CN108305904A - Stacking formula solar cell module - Google Patents

Stacking formula solar cell module Download PDF

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Publication number
CN108305904A
CN108305904A CN201710523103.XA CN201710523103A CN108305904A CN 108305904 A CN108305904 A CN 108305904A CN 201710523103 A CN201710523103 A CN 201710523103A CN 108305904 A CN108305904 A CN 108305904A
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CN
China
Prior art keywords
solar cell
superbattery
item
solar
module
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Granted
Application number
CN201710523103.XA
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Chinese (zh)
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CN108305904B (en
Inventor
拉特森·莫拉德
吉拉德·阿尔莫吉
伊泰·苏伊士
让·胡梅尔
内森·贝克特
林亚福
约翰·甘农
迈克尔·J·斯塔基
罗伯特·斯图尔特
塔米尔·兰斯
达恩·迈丹
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Maikesheng Solar Energy Co ltd
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SunPower Corp
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Priority claimed from US14/530,405 external-priority patent/US9780253B2/en
Priority claimed from US29/509,588 external-priority patent/USD767484S1/en
Priority claimed from US29/509,586 external-priority patent/USD750556S1/en
Priority claimed from US14/674,983 external-priority patent/US9947820B2/en
Application filed by SunPower Corp filed Critical SunPower Corp
Priority claimed from CN201580027878.7A external-priority patent/CN106489211A/en
Publication of CN108305904A publication Critical patent/CN108305904A/en
Application granted granted Critical
Publication of CN108305904B publication Critical patent/CN108305904B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0224—Electrodes
    • H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/02002—Arrangements for conducting electric current to or from the device in operations
    • H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
    • H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/044—PV modules or arrays of single PV cells including bypass diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/06—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers
    • H01L31/072—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the PN heterojunction type
    • H01L31/0745—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the PN heterojunction type comprising a AIVBIV heterojunction, e.g. Si/Ge, SiGe/Si or Si/SiC solar cells
    • H01L31/0747—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the PN heterojunction type comprising a AIVBIV heterojunction, e.g. Si/Ge, SiGe/Si or Si/SiC solar cells comprising a heterojunction of crystalline and amorphous materials, e.g. heterojunction with intrinsic thin layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/1876—Particular processes or apparatus for batch treatment of the devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/36—Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Manufacturing & Machinery (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The present invention provides a kind of high-efficient dispositions for solar cell module, the configuration includes conductively being joined in a manner of stacking each other to form the solar cell of superbattery, and the superbattery may be disposed to effectively utilize the area of the solar energy module, reduce series resistance and improve module efficiency.The front surface metallization pattern on the solar cell, which may be configured such that, can carry out single stage stencilization, and overlapping for solar cell described in the superbattery is conducive to the single stage stencilization.A kind of solar energy photovoltaic system, which may include being connected in parallel to each other, is electrically connected and is electrically connected to two or more such high voltage solar cell modules of inverter.

Description

Stacking formula solar cell module
It is on May 26th, 2015 that the application, which is based on the applying date, (international application no is application No. is 201580027878.7 PCT/US2015/032472), invention and created name is the division of the Chinese patent application of " covering formula solar cell module " Application.
Cross reference to related applications
This international patent application requires the priority of following patent application：On October 31st, 2014 submits entitled The No.14/530,405 United States Patent (USP)s Shen of " Shingled Solar Cell Module " (covering formula solar cell module) Please, entitled " the Shingled Solar Cell Module " that on November 4th, 2014 submits (covers formula solar cell mould Block) 14/532,293 U.S. Patent applications of No., entitled " the Shingled Solar Cell submitted on November 7th, 2014 The No.14/536 of Module " (covering formula solar cell module), 486 U.S. Patent applications are submitted on November 12nd, 2014 Entitled " Shingled Solar Cell Module " (cover formula solar cell module) the U.S. No.14/539,546 Patent application, entitled " the Shingled Solar Cell Module " submitted on November 17th, 2014 (cover the formula sun Can battery module) No.14/543,580 U.S. Patent applications, the entitled " Shingled that on November 19th, 2014 submits The No.14/548 of Solar Cell Module " (covering formula solar cell module), 081 U.S. Patent application, 2014 11 The No. of entitled " Shingled Solar Cell Module " (covering formula solar cell module) that the moon is submitted on the 21st 14/550,676 U.S. Patent application, entitled " the Shingled Solar Cell Module " submitted on November 25th, 2014 The No.14/552 of (covering formula solar cell module), 761 U.S. Patent applications are submitted entitled on December 4th, 2014 The No.14/560,577 United States Patent (USP)s Shen of " Shingled Solar Cell Module " (covering formula solar cell module) Please, entitled " the Shingled Solar Cell Module " that on December 10th, 2014 submits (covers formula solar cell Module) No.14/566,278 U.S. Patent applications, entitled " the Shingled Solar that on December 10th, 2014 submits The No.14/565 of Cell Module " (covering formula solar cell module), 820 U.S. Patent applications, on December 16th, 2014 The No. 14/572 of entitled " Shingled Solar Cell Module " (the covering formula solar cell module) submitted, 206 U.S. Patent applications, entitled " the Shingled Solar Cell Module " submitted on December 19th, 2014 (cover formula Solar cell module) No.14/577,593 U.S. Patent applications are submitted entitled on December 30th, 2014 The No.14/586,025 United States Patent (USP)s Shen of " Shingled Solar Cell Module " (covering formula solar cell module) Please, entitled " the Shingled Solar Cell Module " that on December 30th, 2014 submits (covers formula solar cell Module) No.14/585,917 U.S. Patent applications, entitled " the Shingled Solar that on January 12nd, 2015 submits The No.14/594 of Cell Module " (covering formula solar cell module), 439 U.S. Patent applications, on January 26th, 2015 The No. 14/605 of entitled " Shingled Solar Cell Module " (the covering formula solar cell module) submitted, 695 U.S. Patent applications, entitled " the Shingled Solar Cell Module " submitted on May 27th, 2014 (cover formula Solar cell module) No.62/003,223 U.S. Provisional Patent Applications, August in 2014 is submitted entitled on the 12nd The No.62/036,215 US provisional patents of " Shingled Solar Cell Module " (covering formula solar cell module) Application, entitled " the Shingled Solar Cell Module " that August in 2014 is submitted on the 27th (cover formula solar cell Module) No.62/042,615 U.S. Provisional Patent Applications, the entitled " Shingled that September in 2014 is submitted on the 11st The No.62/048 of Solar Cell Module " (covering formula solar cell module), 858 U.S. Provisional Patent Applications, 2014 Entitled " Shingled Solar Cell Module " (the covering formula solar cell module) that on October 15, in submits No. 62/064,260 U.S. Provisional Patent Application, entitled " the Shingled Solar that on October 16th, 2014 submits 62/064,834 U.S. Provisional Patent Applications of No. of Cell Module " (covering formula solar cell module), in March, 2015 Entitled " the Shingled Solar Cell Panel Employing Hidden Taps " submitted for 31st is (using what is hidden The stacking formula solar panel of tap) No.14/674,983 U.S. Patent applications, what on November 18th, 2014 submitted Entitled " Solar Cell Panel Employing Hidden Taps " (uses the solar cell of hiding tap Plate) No.62/081,200 U.S. Provisional Patent Applications, on 2 6th, 2015 entitled " the Shingled Solar submitted Cell Panel Employing Hidden Taps " (use the stacking formula solar panel of hiding tap " ") No.62/113,250 U.S. Provisional Patent Applications, entitled " the High Voltage Solar submitted on November 21st, 2014 The No.62/082 of Panel " (high voltage solar panels), 904 U.S. Provisional Patent Applications, on January 15th, 2015 mark submitted The No.62/103,816 US provisional patents Shen of entitled " High Voltage Solar Panel " (high voltage solar panels) Please, entitled " High Voltage Solar Panel " (the high voltage solar panels) submitted on 2 4th, 2015 No.62/111,757 U.S. Provisional Patent Applications, entitled " the Solar Cell Cleaving submitted on March 17th, 2015 The U.S. No.62/134,176 of Tools and Methods " (cutting tool and cutting method of solar cell) is temporarily special Profit application, entitled " the Shingled Solar Cell Panel Comprising submitted on April 21st, 2015 Stencil-Printed Cell Metallization " (include the stacking formula solar cell of stencilization cell metallization Plate) No.62/150,426 U.S. Provisional Patent Applications, entitled " the Solar Cells that August in 2014 is submitted on the 11st With Reduced Edge Carrier Recombination's " (solar cell that edge Carrier recombination mitigates) No.62/035,624 U.S. Provisional Patent Applications, on October 15th, 2014 No.29/506 submitted, 415 United States Designs Patent application, on October 20th, 2014 No.29/506 submitted, 755 US Design Patent applications, on November 5th, 2014 The No.29/508 of submission, 323 US Design Patent applications, on November 19th, 2014 No.29/509 submitted, 586 is beautiful State's design patent application and the No.29/509 submitted on November 19th, 2014,588 US Design Patent Shens Please.Each patent application listed above, which is incorporated by reference, to be incorporated herein, for all purposes.
Technical field
Present invention relates generally to solar cell module, solar cell therein is arranged in a manner of covering.
Background technology
Human needs' alternative energy source meets the growing energy demand in the whole world.In many geographic areas, partly borrow Solar energy resources are helped, the electric power generated with solar energy (such as photovoltaic) battery is just sufficient for this demand.
Invention content
Disclosed herein is the efficient arrangement mode of the solar cell in solar cell module, and making are such too The method of positive energy module.
On the one hand, solar energy module include a string of quantity N be greater than or equal to 25, the rectangle that is serially connected or reality The solar cell of rectangle in matter, these solar cells averagely have greater than about 10 volts of breakdown voltage.The solar-electricity Pond is assembled to one or more superbatteries, and each superbattery includes two or more sun for the arrangement that is in line Can battery, the long side of wherein adjacent solar battery overlaps each other, and conductively each other by the not only conductive but also adhesive of heat conduction Engagement.In the solar cell string, without single solar cell or it is groups of sum less than N solar cell with Bypass diode individually electrical connection in parallel.Along superbattery, the lap engaged across adjacent solar battery has Effect heat transfer is had, is conducive to solar energy module and safely and reliably works, this effective heat transfer avoids or reduces the reverse-biased sun Hot spot emerges in energy battery.The superbattery can be packaged in the heat being for example clipped between glass front plate and back glass In plastomeric olefin polymer, to further enhance tolerance of the module to thermal damage.In some variations, N can be more than Or it is equal to 30,50 or 100.
On the other hand, superbattery includes multiple silicon solar cells, wherein each silicon solar cell has rectangle Or (day side) surface and back surface before substantial rectangular, the shape on these surfaces is by opposite facing setting and parallel first Long side and the second long side and the short side of two opposite facing settings define.Each solar cell includes：Conductive front surface Metallization pattern comprising at least one front surface engagement pad of neighbouring first long side setting；And conductive back surface metal Change pattern comprising at least one back surface engagement pad of neighbouring second long side setting.The silicon solar cell is in line Arrangement, the first long side of adjacent silicon solar cell and the overlapping of the second long side, and the front surface on adjacent silicon solar cell Engagement pad and back surface engagement pad are overlapped and are conductively joined to each other by conductive adhesive grafting material, thus by silicon Solar cell is electrically connected in series.The front surface metallization pattern of each silicon solar cell includes barrier, which is constructed For during manufacturing superbattery, substantially conductive adhesive to be connect before the solidification of conductive adhesive grafting material Condensation material is confined at least one front surface engagement pad.
On the other hand, superbattery includes multiple silicon solar cells, wherein each silicon solar cell has rectangle Or (day side) surface and back surface before substantial rectangular, the shape on these surfaces is by opposite facing setting and parallel first Long side and the second long side and the short side of two opposite facing settings define.Each solar cell includes：Conductive front surface Metallization pattern comprising at least one front surface engagement pad of neighbouring first long side setting；And conductive back surface metal Change pattern comprising at least one back surface engagement pad of neighbouring second long side setting.The silicon solar cell is in line Arrangement, the first long side of adjacent silicon solar cell and the overlapping of the second long side, and the front surface on adjacent silicon solar cell Engagement pad and back surface engagement pad are overlapped and are conductively joined to each other by conductive adhesive grafting material, thus by silicon Solar cell is electrically connected in series.The back surface metallization pattern of each silicon solar cell includes barrier, which is constructed For during manufacturing superbattery, substantially conductive adhesive to be connect before the solidification of conductive adhesive grafting material Condensation material is confined at least one back surface engagement pad.
On the other hand, the method for making solar cell string includes：Along a plurality of of the long edge for being parallel to each chip Wire cutting one or more dead square silicon wafer, and multiple rectangle silicon solar cells are formed, wherein each silicon solar is electric Pond is substantially equal along the length of its long axis.This method further includes that rectangle silicon solar cell is in line arrangement, is made adjacent The long side of solar cell is overlapped and is conductively joined to each other, to which solar cell to be electrically connected in series.It is the multiple Rectangle silicon solar cell includes：There are two at least one rectangle solar cell of chamfering, the chamferings to correspond to standard for tool The turning of square wafers or the part at turning；And respectively lack one or more rectangle silicon solar cells of chamfering. Pass through the rectangular silicon sun for making the width vertical with including the long axis of rectangle silicon solar cell of chamfering be more than and lack chamfering Can battery the vertical width of long axis, and the spacing between the parallel lines along cutting pseudo-square wafers selects, with Just chamfering is compensated；Therefore, during solar cell string works, multiple rectangle silicon solar cells in solar cell string In each battery front surface, the area being exposed under sunlight is substantially equal.
On the other hand, superbattery includes be in line multiple silicon solar cells of arrangement, wherein adjacent solar battery End overlapping and be conductively joined to each other, so that solar cell is electrically connected in series.At least one silicon solar electricity Pond has chamfering, and the chamfering, which corresponds to from it, cuts the turning of the dead square silicon wafer of silicon solar cell or turning A part；At least one silicon solar cell lacks chamfering；During solar cell string works, each silicon solar cell The area that is exposed under sunlight of front surface be substantially equal.
On the other hand, the method for making two or more superbatteries includes：Along the long side for being parallel to each chip The a plurality of wire cutting one or more dead square silicon wafer of edge, and form more than first a rectangle silicon solars with chamfering Battery, and lack more than second a rectangle silicon solar cells of chamfering, wherein the chamfering corresponds to dead square silicon wafer Turning or turning a part, each battery more than described second in a rectangle silicon solar cell has the first length, The span of first length is equal to the full duration of dead square silicon wafer.This method further includes from more than first a rectangular silicon sun Each battary removal chamfering that can be in battery, and form the multiple rectangle silicon solar cells of third for lacking chamfering, described the Each battery more than three in a rectangle silicon solar cell has second length shorter than the first length.This method further includes： More than second a rectangle silicon solar cells are in line arrangement, the long side of adjacent rectangle silicon solar cell is made to be overlapped and are conducted Property be joined to each other, and more than second a rectangle silicon solar cells are electrically connected in series, width are consequently formed equal to the first length The solar cell string of degree；And the multiple rectangle silicon solar cells of third are in line arrangement, make the adjacent rectangle silicon sun The long side of energy battery is overlapped and is conductively joined to each other, and the multiple rectangle silicon solar cells of third are electrically connected in series, The solar cell string that width is equal to the second length is consequently formed.
On the other hand, the method for making two or more superbatteries includes：Along the long side for being parallel to each chip The a plurality of wire cutting one or more dead square silicon wafer of edge, and form more than first a rectangle silicon solars with chamfering Battery, and lack more than second a rectangle silicon solar cells of chamfering, wherein the chamfering corresponds to dead square silicon wafer Turning or turning a part；More than first a rectangle silicon solar cells are in line arrangement, adjacent rectangle silicon solar is made The long side of battery is overlapped and is conductively joined to each other, and more than first a rectangle silicon solar cells are electrically connected in series； And more than second a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than second a rectangle silicon solar cells is electrically connected in series.
On the other hand, superbattery includes：The multiple silicon solar cells for the arrangement that is in line in a first direction, wherein The end of adjacent silicon solar cell is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series； And elongated flexible electrical interconnection, long axis is parallel to the second direction vertical with the first direction and is orientated, described elongated Flexible electrical interconnection have following features：At the multiple discrete positions arranged along second direction, conductively it is joined to The front surface or back surface of the silicon solar cell of end one；At least extending end solar cell is complete in a second direction Width；Front surface or rear surface perpendicular to end silicon solar cell measure, and conductor thickness is less than or equal to about 100 microns； The resistance less than or equal to about 0.012 ohm is provided to the electric current flowed in a second direction；It is configured to provide flexibility, it should Flexibility reconciles between end silicon solar cell and the electrical interconnection within the temperature range of about -40 DEG C to about 85 DEG C second Differential expansion on direction.
For example, the front surface and rear surface perpendicular to end silicon solar cell measure, the flexibility electrical interconnection is led Body thickness may be less than or equal to about 30 microns.It is described flexibility electrical interconnection can extend in a second direction superbattery it Outside, electrical interconnection is provided to be at least the neighbouring superbattery the second superbattery disposed in parallel in solar energy module.This Outside or alternatively, the flexibility electrical interconnection can extend to except superbattery in a first direction, so as in solar energy To provide electrical interconnection with the superbattery the second superbattery disposed in parallel that is in line in module.
On the other hand, solar energy module includes multiple superbatteries, these superbatteries are arranged to span and are equal to module Two or more parallel rows of width, to form the front surface of module.Each superbattery includes the arrangement that is in line Multiple silicon solar cells, wherein adjacent silicon solar cell end overlapping and be conductively joined to each other, to will Silicon solar cell is electrically connected in series.In first row at least one end of first superbattery adjacent with the edge of module via Flexible electrical interconnection and the one end for being electrically connected to the second superbattery adjacent with the same edge of module in second row, it is described Flexible electrical interconnection has following features：It is super by electroconductive binder grafting material it to be joined to first at multiple discrete positions The front surface of battery；The edge for being parallel to module extends；Its at least part is folded in described one end week of the first superbattery It encloses, thus it is invisible in front of module.
On the other hand, the method for making superbattery includes：Each battery in one or more silicon solar cells On with laser mark one or more quarter line drawing, to defining multiple rectangular areas on silicon solar cell；Neighbouring each Electroconductive binder grafting material is applied to one or more silicon carved and painted by one or more positions of the long side of rectangular area On solar cell；Divide silicon solar cell along line drawing is carved, obtains the silicon solar cell of multiple rectangles, each rectangle All position adjacent with long side on its front surface is arranged in some electroconductive binder grafting material on silicon solar cell； The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell in a manner of covering Overlapping, is arranged between a part of electroconductive binder grafting material；Then conductive bonding material is made to cure, thus by adjacent weight Folded rectangle silicon solar cell is joined to each other, and these batteries are electrically connected in series.
On the other hand, the method for making superbattery includes：Each battery in one or more silicon solar cells On with laser mark one or more quarter line drawing, to defining multiple rectangular areas on silicon solar cell；By conductive adhesion Agent grafting material is applied in the multiple portions of the top surface of one or more silicon solar cells；In one or more silicon Applying vacuum between the bottom surface of solar cell and the support surface of bending, so that one or more silicon solar cells Support surface against bending is bent, and one or more silicon solar cells is caused then to be obtained more along line drawing cutting is carved The silicon solar cell of a rectangle, some electroconductive binder grafting material is set on the silicon solar cell of each rectangle Set position adjacent with long side on its front surface；The silicon solar cell of multiple rectangles is in line arrangement, adjacent square is made The long side of shape silicon solar cell is overlapped in a manner of covering, and is arranged between a part of electroconductive binder grafting material；Then make to lead Electrically engage material solidification, to by adjacent overlapping rectangles silicon solar cell engagement to each other, and by these battery series electricals Connection.
On the other hand, the method for making solar energy module includes assembling multiple superbatteries, and each superbattery includes The multiple rectangle silicon solar cells for the arrangement that is in line, and end in the long side of adjacent rectangle silicon solar cell with folded Lid mode is overlapped.This method further includes applying heat and pressure to superbattery, and make to be arranged in adjacent rectangular silicon solar-electricity Conductive bonding material solidification between the overlapped ends in pond, to which adjacent overlapping rectangles silicon solar cell engagement is arrived that This, and these batteries are electrically connected in series.This method further includes being constructed by required solar energy module, and superbattery is arranged And it is mutually linked as the lamination stack with encapsulant, then apply heat and pressure to the lamination stack, to form laminate structures.
Some variations of this method are included in applies heat and pressure before forming laminate structures, to lead to lamination stack It crosses and heat and pressure is applied to superbattery to be cured or partially cured the conductive bonding material, to form solidification or portion Divide cured superbattery, as the intermediate products before formation laminate structures.In some variations, when super in assembling When each additional rectangle silicon solar cell being added to superbattery during grade battery, first make newly added solar-electricity Electroconductive binder grafting material between pond and adjacent Chong Die solar cell is cured or partially cured, then by any other Rectangle silicon solar cell is added to superbattery.Alternatively, be included in same step will be super for some variations All conductive bonding materials are cured or partially cured in battery.
If superbattery is formed partially cured intermediate products, this method may include applying to lamination stack While heat and pressure are to form laminate structures, the solidification of conductive bonding material is completed.
While some variations of this method are included in lamination stack application heat and pressure to form laminate structures, Conductive bonding material is cured, without forming the superbattery that is cured or partially cured as being formed before laminate structures Intermediate products.
This method may include one or more standard-sized silicon solar cells cutting into the smaller rectangle shape of area Shape, and the silicon solar cell of rectangle is provided.Electroconductive binder can be connect before the one or more silicon solar cells of cutting Condensation material is applied to one or more of silicon solar cells, in order to provide electroconductive binder grafting material is coated in advance Rectangle silicon solar cell.Alternatively, one or more silicon solar cells can first be cut to provide the rectangular silicon sun Energy battery, is then just applied to rectangle silicon solar cell by electroconductive binder grafting material.
On the one hand, solar energy module includes the multiple superbatteries for being arranged to two or more parallels.It is each super Grade battery all includes the rectangle of multiple arrangements that are in line or the silicon solar cell of substantial rectangular, wherein adjacent silicon solar The long side of battery is overlapped and is conductively directly connectcted to each other, to which silicon solar cell to be electrically connected in series.Solar panels Further include：The first hiding tap engagement pad on the back surface of the first solar cell, first solar-electricity Pond is located at the centre position along first superbattery；And conductively it is joined to the first hiding tap engagement pad The first electrical interconnection.First electrical interconnection includes stress relief feature, which reconciles the electrical interconnection Differential thermal expansion between the silicon solar cell engaged with the electrical interconnection.The term used herein in conjunction with interconnection piece " stress relief feature " can refer to geometric properties, such as kink, ring or slit, can also refer to the thickness of interconnection piece (for example, pole It is thin) and/or interconnection piece ductility.For example, stress relief feature can refer to, interconnection piece is formed by very thin copper strips.
Solar energy module may include the second hiding tap contact on the back surface of the second solar cell Pad, second solar cell are located near the first solar cell, and second in being arranged along adjacent superbattery The centre position of a superbattery, wherein the first hiding tap engagement pad by first electrical interconnection by be electrically connected to the Two hiding tap engagement pads.In such cases, the first electrical interconnection can extend across the first superbattery and the second surpass Gap between grade battery, and conductively it is joined to the second hiding tap engagement pad.Alternatively, first hide Being electrically connected between tap engagement pad and the second hiding tap engagement pad may include another electrical interconnection, described another One electrical interconnection is conductively joined to the second hiding tap engagement pad and is electrically connected (for example, conductively engaging) To the first electrical interconnection.Any interconnection scheme all optionally extends through additional superbattery row.For example, any Interconnection scheme all optionally extends through the full duration of module, to often be arranged via hiding tap engagement pad to interconnect In solar cell.
Solar energy module may include：The second hiding tap contact on the back surface of the second solar cell Pad, second solar cell are located at another centre position along first superbattery；Conductively it is joined to Second electrical interconnection of two hiding tap engagement pads；And bypass diode, the bypass diode are electrically interconnected using first Between part and the second electrical interconnection and the tap engagement pad hidden positioned at first and the second hiding tap engagement pad too Positive energy cell parallel electrical connection.
In any of the above-described kind of variations, the first hiding tap engagement pad can be disposed in first too Multiple hiding taps on the back surface of the first solar cell in the row that the long axis of positive energy battery extends in parallel connect One in touch pad, wherein the first electrical interconnection is conductively joined to each in multiple hiding contacts, and its edge The span for the long axis is substantially equal to the length of the first solar cell.Additionally or alternatively, the first hiding contact Pad can be the back of the body table being disposed in the first solar cell in the vertically extending row of the long axis of the first solar cell One in multiple hiding tap engagement pads on face.In the latter case, for example, the tap that this row hides connects It the position of touch pad can be adjacent with the short edge of the first solar cell.First hiding engagement pad can be in the first solar energy One be arranged on the back surface of battery in multiple hiding tap engagement pads of two-dimensional array.
Alternatively, in any of the above-described kind of variations, the position of the first hiding tap engagement pad can be with first The short side of the back surface of solar cell is adjacent, wherein the first electrical interconnection not along the long axis of the solar cell from The hiding tap engagement pad substantially extends internally, and the back surface metallization pattern on the first solar cell Conducting path is provided for the interconnection piece, which preferably has thin-film electro of 5 ohm less than or equal to about every square Resistance or 2.5 ohm of the film resistor less than or equal to about every square.In such cases, the first interconnection piece may include (example Two protruding portions such as) being arranged on the opposite side of stress relief feature, one of protruding portion are conductively joined to first Hiding tap engagement pad.The two protruding portions can have different length.
In any of the above-described kind of variations, the first electrical interconnection may include alignment characteristics, and the alignment characteristics are for knowing It not whether is not aligned ideally, whether is ideally aligned with the edge of the first superbattery with the first hiding tap engagement pad, Or whether not only ideally it is aligned with the first hiding tap engagement pad but also is managed with the edge of the first superbattery for identification It is aligned with thinking.
On the other hand, solar energy module includes glass front plate, back plate and multiple superbatteries, the multiple super electricity Pond is arranged to two or more parallels between glass front plate and back plate.Each superbattery includes multiple is in line The rectangle of arrangement or the silicon solar cell of substantial rectangular, wherein the long side overlapping of adjacent silicon solar cell and both flexibility It is conductively directly connectcted to each other again, to which silicon solar cell to be electrically connected in series.First flexible electrical interconnection rigidity Ground is conductively joined to first superbattery.Flexible conductor engagement between the solar cell of overlapping is super electricity Pond provides mechanical plasticity, is parallel to superbattery row's within the temperature range of about -40 DEG C to about 100 DEG C, reconcile Thermal expansion mismatch on direction between superbattery and glass front plate makes the thermal expansion mismatch be unlikely to damage solar energy module. Rigid conductibility between first superbattery and the first flexible electrical interconnection engage force the first flexibility electrical interconnection about- Within the temperature range of 40 DEG C to about 180 DEG C, reconciliation the first superbattery and first flexibility on the direction that superbattery is arranged Thermal expansion mismatch between electrical interconnection makes the thermal expansion mismatch be unlikely to damage solar energy module.
Conductibility engagement between the adjacent solar battery being overlapped in superbattery is electrically interconnected with superbattery and flexibility Conductibility engagement between part can utilize different conductive adhesives.At least one solar cell side in superbattery Conductibility engagement engaged with the conductibility of the solar cell other side and can utilize different conductive adhesives.For example, shape Conductive adhesive at the positive engagement between superbattery and flexible electrical interconnection can be solder.In some modification shapes In formula, the conductibility engagement between the overlapping solar cell in superbattery is formed with non-solder conductive adhesive, And the conductibility between superbattery and flexible electrical interconnection, which engages, to be formed with solder.
In some variations using the two different conductive adhesives just described, both conductibility are viscous Mixture can cure in same procedure of processing (for example, at the same temperature, it is solid under same pressure and/or in same time interval Change).
Conductibility engagement between the adjacent solar battery of overlapping can reconcile between for example each battery and glass front plate Differential motion greater than or equal to about 15 microns.
For example, the conductibility between the adjacent solar battery of overlapping is bonded on solar cell direction Thickness may be less than or equal to about 50 microns, and the thermal conductivity on solar cell direction can be greater than or equal to about 1.5W/(m-K)。
For example, the first flexible electrical interconnection itself can bear thermal expansion or thermal contraction greater than or equal to about 40 microns.
The part of superbattery is conductively joined in first flexible electrical interconnection can be in band-like, be formed by copper, And the thickness on the direction perpendicular to the surface that it is engaged with solar cell can e.g., less than or equal to about 30 microns, Or less than or equal to about 50 microns.First flexible electrical interconnection may include integral type conductibility copper part, the part not with too Positive energy battery engagement, and provided compared to the part for being conductively joined to solar cell in the first flexible electrical interconnection Higher conductibility.Thickness of the first flexible electrical interconnection on the direction perpendicular to the surface that it is engaged with solar cell It may be less than or equal to about 30 microns or less than or equal to about 50 microns, and the plane residing for solar cell surface In, the width on the direction vertical with the electric current for flowing through the electrical interconnection is greater than or equal to about 10mm.First flexible electrical interconnection It is joined to part transmitable solar cell and nearby provides the conductive conductor of higher compared to the first electrical interconnection.
On the other hand, solar energy module includes the multiple superbatteries for being arranged to two or more parallels.Each Superbattery all includes the rectangle of multiple arrangements that are in line or the silicon solar cell of substantial rectangular, wherein the adjacent silicon sun The long side of energy battery is overlapped and is conductively directly connectcted to each other, to which silicon solar cell to be electrically connected in series.Normal The hiding tap engagement pad of non-conducting high current is located on the back surface of the first solar cell when work, and described first Solar cell is located at the centre position along first superbattery in first row superbattery.Hiding tap connects Touch pad is electrically connected in parallel at least second solar cell in second row superbattery.
Solar energy module may include following electrical interconnections：The electrical interconnection is joined to hiding tap engagement pad, and will Hiding tap engagement pad is electrically interconnected to the second solar cell.In some variations, the span of the electrical interconnection The not substantially equal to length of the first solar cell, and the back surface metallization pattern on the first solar cell is hidden The tap engagement pad of Tibetan provides conducting path, which has thin-film electro of 5 ohm less than or equal to about every square Resistance.
Multiple superbatteries can be arranged to three or more parallels, and the span of these parallels is equal to solar energy Module is in the width on the direction that these are arranged, and hiding tap engagement pad is electrically connected to each super electricity Hiding engagement pad at least one of pond row solar cell, to which all superbattery row's parallel connections to be electrically connected. In such variations, solar energy module may include being connected at least one hiding tap engagement pad or be connected to At least one bus of interconnection piece between hiding tap engagement pad connects, bus connection and bypass diode or its He connects electronic device.
Solar energy module may include following flexible electrical interconnections：The flexibility electrical interconnection is conductively joined to hiding Tap engagement pad, to which the hiding tap engagement pad is electrically connected to the second solar cell.In flexible electrical interconnection Conductively be joined to hiding tap engagement pad part can for example in it is band-like, formed by copper, and perpendicular to Thickness on the direction on its surface engaged with solar cell may be less than or equal to about 50 microns.Hiding tap contact Conductibility between pad and flexible electrical interconnection, which engages, can force flexible electrical interconnection to bear the first solar cell and flexible electrical Thermal expansion mismatch between interconnection piece, and within the temperature range of about -40 DEG C to about 180 DEG C, the first solar-electricity of reconciliation The relative motion as caused by thermally expanding between pond and the second solar cell makes the relative motion be unlikely to damage solar energy mould Block.
In some variations, at work, the first hiding engagement pad can conduct more single than any solar energy module The electric current of the electric current bigger generated in solar cell.
Under normal conditions, it is covered in the front surface of the first solar cell above the first hiding tap engagement pad Do not occupied by engagement pad or any other interconnection piece feature.Under normal conditions, in the front surface of the first solar cell not by Any region of the part overlapping of adjacent solar battery in first superbattery all not by engagement pad or any other mutually Even part feature occupies.
In some variations, most of battery in each superbattery does not have hiding tap contact Pad.In such variations, there is the battery of hiding tap engagement pad to compare and do not have hiding tap engagement pad Battery, can have larger light collecting zone.
On the other hand, solar energy module includes glass front plate, back plate and multiple superbatteries, the multiple super electricity Pond is arranged to two or more parallels between glass front plate and back plate.Each superbattery includes multiple is in line The rectangle of arrangement or the silicon solar cell of substantial rectangular, wherein the long side overlapping of adjacent silicon solar cell and both flexibility It is conductively directly connectcted to each other again, to which silicon solar cell to be electrically connected in series.First flexible electrical interconnection rigidity Ground is conductively joined to first superbattery.Flexible conductor engagement between the solar cell of overlapping is passed by first The property led adhesive is formed, and has the modulus of shearing less than or equal to about 800 megapascal.First superbattery and the first flexible electrical Rigid conductibility engagement between interconnection piece is formed by the second conductive adhesive, is had greater than or equal to about 2000 megapascal Modulus of shearing.
First conductive adhesive can have the glass transition temperature (for example) less than or equal to about 0 DEG C.
In some variations, the first conductive adhesive and the second conductive adhesive are different, but both Conductive adhesive can cure in same procedure of processing.
In some variations, the conductibility between the adjacent solar battery of overlapping is bonded on perpendicular to solar energy Thickness on battery direction less than or equal to about 50 microns, and be more than in the thermal conductivity on solar cell direction or Equal to about 1.5W/ (m-K).
On the one hand, solar energy module includes quantity N greater than or equal to about 150 rectangles or the silicon sun of substantial rectangular Energy battery, these silicon solar cells are arranged to multiple superbatteries in two or more parallels.It is each super Grade battery all includes the multiple silicon solar cells of arrangement of being in line, wherein the long side overlapping of adjacent silicon solar cell and It is conductively joined to each other, to which silicon solar cell to be electrically connected in series.Superbattery is electrically connected, and is more than for providing Or the High Level DC Voltage equal to about 90 volts.
In a kind of variations, solar energy module includes one or more flexible electrical interconnections, the flexible electrical interconnection Part is arranged to multiple superbatteries being electrically connected in series, to provide High Level DC Voltage.Solar energy module may include module Grade power electronic device, the module level power electronic device includes for High Level DC Voltage to be transformed into the inverse of alternating voltage Become device.Module level power electronic device can sense High Level DC Voltage, and can be operated too at optimum current-voltage power point Positive energy module.
In another variations, solar energy module includes being electrically connected to each to arrange adjacent serial connected super battery Module level power electronic device is arranged for being electrically connected in series one or more pairs of superbatteries to provide High Level DC Voltage, the module Grade power electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.Optionally, module level power electricity Sub- device can sense the voltage at each individual a pair of of superbattery row both ends, and can be at optimum current-voltage power point Each individually a pair of of the superbattery row of operation.Optionally, if individually the voltage at a pair of superbattery row both ends is less than threshold It is worth, then this can arrange from the circuit for providing High Level DC Voltage superbattery and disconnect by module level power electronic device.
In another variations, solar energy module includes the module for being electrically connected to each individual superbattery row Grade power electronic device is arranged for being electrically connected in series two or more superbatteries to provide High Level DC Voltage, the module level Power electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.Optionally, module level power electronic Device can sense the voltage at each individual superbattery row both ends, and can be operated at optimum current-voltage power point every A individual superbattery row.Optionally, if individually the voltage at superbattery row both ends is less than threshold value, module level work( Rate electronic device can disconnect this individual superbattery row from the circuit for providing High Level DC Voltage.
In another variations, solar energy module includes the module level for being electrically connected to each individual superbattery Power electronic device, for being electrically connected in series two or more superbatteries to provide High Level DC Voltage, the module level power Electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.Optionally, module level power electronic device The voltage at each individual superbattery both ends can be sensed, and can be operated at optimum current-voltage power point each independent Superbattery.Optionally, if individually the voltage at superbattery both ends is less than threshold value, module level power electronic device This individual superbattery can be disconnected from the circuit for providing High Level DC Voltage.
In another variations, tap electricity that each superbattery in module is hidden is segmented into multiple Segmentation.Solar energy module includes being electrically connected to the module level that each of each superbattery is segmented by hiding tap Power electronic device is segmented for being electrically connected in series two or more to provide High Level DC Voltage, the module level power electronic Device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.Optionally, module level power electronic device can be felt The voltage at the individual segmentation both ends of each of each superbattery is surveyed, and can be operated at optimum current-voltage power point Each individually segmentation.Optionally, if individually the voltage at segmentation both ends is less than threshold value, module level power electronic device This can be individually segmented from the circuit for providing High Level DC Voltage and be disconnected.
In any of the above-described kind of variations, optimum current-voltage power point can be maximum current-voltage power point.
In any of the above-described kind of variations, module level power electronic device may lack DC to DC boost parts.
In any of the above-described kind of variations, N can greater than or equal to about 200, greater than or equal to about 250, be more than or wait In about 300, greater than or equal to about 350, greater than or equal to about 400, greater than or equal to about 450, greater than or equal to about 500, be more than Or equal to about 550, greater than or equal to about 600, greater than or equal to about 650, or greater than or equal to about 700.
In any of the above-described kind of variations, High Level DC Voltage can greater than or equal to about 120 volts, greater than or equal to about 180 volts, greater than or equal to about 240 volts, greater than or equal to about 300 volts, greater than or equal to about 360 volts, greater than or equal to about 420 Volt, greater than or equal to about 480 volts, greater than or equal to about 540 volts, or greater than or equal to about 600 volts.
On the other hand, solar energy photovoltaic system includes two or more solar energy modules of electrical connection in parallel and inverse Become device.Each solar energy module includes quantity N greater than or equal to about the silicon solar of 150 rectangles or substantial rectangular electricity Pond, these silicon solar cells are arranged to multiple superbatteries in two or more parallels.In each module Each superbattery include being in line and being arranged in the mould two or more silicon solar cells in the block, wherein adjacent Silicon solar cell long side overlapping and be conductively joined to each other, so that silicon solar cell is electrically connected in series. Each mould superbattery electrical connection in the block, for making module provide the high-voltage direct-current output greater than or equal to about 90 volts.It is inverse Become device and be electrically connected to two or more solar energy modules, to which the output of the high-voltage direct-current of these modules is transformed into exchange Electricity.
Each solar energy module may comprise one or more flexible electrical interconnections, and the flexibility electrical interconnection is arranged For the superbattery in solar energy module to be electrically connected in series, to provide the high-voltage direct-current output of solar energy module.
Solar energy photovoltaic system may include with first in two or more solar energy modules for being electrically connected of parallel connection too At least third solar energy module of positive energy block coupled in series electrical connection.In such cases, third solar energy module may include Quantity N ' is arranged greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, these silicon solar cells At multiple superbatteries in two or more parallels.Each superbattery in third solar energy module The mould two or more silicon solar cells in the block are arranged in including being in line, wherein adjacent silicon solar cell Long side is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series.In third solar energy module Superbattery electrical connection, for make module provide greater than or equal to about 90 volts high-voltage direct-current output.
Including being electrically connected in series with first solar energy module in two or more solar energy modules of just having described The variations of third solar energy module may also include in two or more solar energy modules being electrically connected with parallel connection At least the 4th solar energy module that second solar energy module is electrically connected in series.4th solar energy module may include quantity N ' ' is arranged to greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, these silicon solar cells Multiple superbatteries in two or more parallels.Each superbattery in 4th solar energy module wraps It includes to be in line and is arranged in the mould two or more silicon solar cells in the block, wherein the length of adjacent silicon solar cell Side is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series.In 4th solar energy module Superbattery is electrically connected, for making module provide the high-voltage direct-current output greater than or equal to about 90 volts.
The solar energy photovoltaic system may include fuse and/or blocking diode, these fuses and/or blocking diode It is arranged to prevent to dissipate the power of other solar energy modules generation because short circuit occurs for any one solar energy module.
The solar energy photovoltaic system may include positive bus and negative bus, two or more solar energy modules electricity in parallel These positive and negative buses are connected to, inverter is also electrically connected to these positive and negative buses.Alternatively, the solar energy photovoltaic system It may include header box, two or more solar energy modules are electrically connected to the header box by individual conductor.The header box will Solar energy module parallel connection is electrically connected, and optionally includes fuse and/or blocking diode, these fuses and/or choked flow two Pole pipe is arranged to prevent to dissipate the power of other solar energy modules generation because short circuit occurs for any one solar energy module.
The inverter can be configured in the direct current pressing operation solar energy module higher than minimum value, it is described most Small value is configured to avoid solar energy module reverse-biased.
The inverter can be configured for identifying the reverse-biased occurred in one or more solar energy modules, and Avoid the occurrence of the electric pressing operation solar energy module of reverse-biased.
The solar energy photovoltaic system may be provided on roof.
In any of the above-described kind of variations, N, N ', N ' ' can greater than or equal to about 200, greater than or equal to about 250, Greater than or equal to about 300, greater than or equal to about 350, greater than or equal to about 400, greater than or equal to about 450, greater than or equal to about 500, greater than or equal to about 550, greater than or equal to about 600, greater than or equal to about 650, or greater than or equal to about 700.N、 N ', N ' ' value can be identical, also can be different.
In any of the above-described kind of variations, High Level DC Voltage that solar energy module is provided can be greater than or equal to about 120 volts, greater than or equal to about 180 volts, greater than or equal to about 240 volts, greater than or equal to about 300 volts, greater than or equal to about 360 Volt, greater than or equal to about 420 volts, greater than or equal to about 480 volts, greater than or equal to about 540 volts, or greater than or equal to about 600 Volt.
On the other hand, solar energy photovoltaic system includes first solar energy module, and first solar energy module includes Quantity N is arranged greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, these silicon solar cells At multiple superbatteries in two or more parallels.Each superbattery includes the multiple of arrangement that are in line Silicon solar cell, wherein the long side of adjacent silicon solar cell is overlapped and is conductively joined to each other, thus too by silicon Positive energy battery is electrically connected in series.The system also includes inverters.The inverter can be (for example) with first solar energy The integrated micro- inverter of module.Superbattery electrical connection in first solar energy module, for above or equal to about 90 volts High Level DC Voltage be supplied to inverter, inverter that direct current is transformed into alternating current again.
First solar energy module may include that one or more flexible electrical interconnections, the flexibility electrical interconnection are arranged For the superbattery in solar energy module to be electrically connected in series, to provide the high-voltage direct-current output of solar energy module.
The solar energy photovoltaic system may include at least second sun being electrically connected in series with first solar energy module It can module.Second solar energy module may include quantity N ' greater than or equal to about 150 rectangles or the silicon sun of substantial rectangular Energy battery, these silicon solar cells are arranged to multiple superbatteries in two or more parallels.Second Each superbattery in solar energy module includes being in line to be arranged in the mould two or more silicon solars electricity in the block Pond, wherein the long side of adjacent silicon solar cell is overlapped and is conductively joined to each other, thus by silicon solar cell string Connection electrical connection.Superbattery electrical connection in second solar energy module, for making module provide greater than or equal to about 90 volts High-voltage direct-current exports.
Inverter (for example, micro- inverter) may lack DC to DC boost parts.
In any of the above-described kind of variations, N and N ' can greater than or equal to about 200, greater than or equal to about 250, be more than Or equal to about 300, greater than or equal to about 350, greater than or equal to about 400, greater than or equal to about 450, greater than or equal to about 500, Greater than or equal to about 550, greater than or equal to about 600, greater than or equal to about 650, or greater than or equal to about 700.N, the value of N ' Can be identical, it also can be different.
In any of the above-described kind of variations, High Level DC Voltage that solar energy module is provided can be greater than or equal to about 120 volts, greater than or equal to about 180 volts, greater than or equal to about 240 volts, greater than or equal to about 300 volts, greater than or equal to about 360 Volt, greater than or equal to about 420 volts, greater than or equal to about 480 volts, greater than or equal to about 540 volts, or greater than or equal to about 600 Volt.
On the other hand, solar energy module include quantity N too greater than or equal to about the silicon of 250 rectangles or substantial rectangular Positive energy battery, these silicon solar cells are arranged to multiple serial connected super batteries in two or more parallels. Each superbattery includes the multiple silicon solar cells for the arrangement that is in line, wherein the long side of adjacent silicon solar cell It is overlapped and is conductively directly connectcted to each other by the not only conductive but also adhesive of heat conduction, thus by the silicon sun in superbattery Energy battery is electrically connected in series.In solar energy module, the bypass diode that every 25 solar cells include is less than one.Both it led The adhesive of electric heat conduction again forms engagement between adjacent solar battery, these are bonded on perpendicular to solar cell direction On thickness less than or equal to about 50 microns, and the thermal conductivity on solar cell direction greater than or equal to about 1.5W/(m-K)。
Superbattery can be encapsulated in the thermoplastic olefin layer between foreboard and back plate.Superbattery and its encapsulant It can be sandwiched between glass front plate and back glass.
In solar energy module, such as：The bypass diode that every 30 solar cells include can be less than one, every 50 The bypass diode that solar cell includes can be less than the bypass diode that one or every 100 solar cells include can Less than one.Solar energy module can not include (for example) bypass diode, only include single bypass diode including be no more than Three bypass diodes including it is no more than six bypass diodes, or including no more than ten bypass diodes.
Conductibility engagement between the solar cell of overlapping optionally provides mechanical plasticity for superbattery, from And within the temperature range of about -40 DEG C to about 100 DEG C, it reconciles and is parallel to superbattery and glass on the direction of superbattery row Thermal expansion mismatch between foreboard makes the thermal expansion mismatch be unlikely to damage solar energy module.
In any of the above-described kind of variations, N can greater than or equal to about 300, greater than or equal to about 350, be more than or wait In about 400, greater than or equal to about 450, greater than or equal to about 500, greater than or equal to about 550, greater than or equal to about 600, be more than Or it is equal to about 650, or greater than or equal to about 700.
In any of the above-described kind of variations, superbattery can be electrically connected, with provide greater than or equal to about 120 volts, be more than Or equal to about 180 volts, greater than or equal to about 240 volts, greater than or equal to about 300 volts, greater than or equal to about 360 volts, be more than or wait In about 420 volts, greater than or equal to about 480 volts, the high direct current greater than or equal to about 540 volts or greater than or equal to about 600 volts Voltage.
Solar energy system may include any of the above-described kind of variations solar energy module and inverter (for example, micro- inversion Device), wherein inverter is electrically connected to solar energy module, and is configured for converting the direct current output from solar energy module, from And provide exchange output.Inverter may lack DC to DC boost parts.The inverter can be configured for higher than The direct current pressing operation solar energy module of minimum value, the minimum value are configured to avoid solar cell reverse-biased.Minimum electricity Pressure value may depend on temperature.The inverter can be configured for identification reverse-biased, and avoid the occurrence of reverse-biased Electric pressing operation solar energy module.For example, the inverter can be configured for the voltage-to-current power in solar energy module Solar energy module is operated in the local maxima region of curve, to avoid there is reverse-biased.
Subject description discloses the cutting methods of the cutting tool of solar cell and solar cell.
On the one hand, the method for manufacturing solar cell includes：Solar cell wafer is promoted along curved surface, then The applying vacuum between curved surface and the bottom surface of solar cell wafer, so that solar cell wafer is against bending Surface curvature, to cut solar cell wafer along one or more previous ready quarter line drawing, thus from the sun It can be partitioned into multiple solar cells in battery wafer.Solar cell wafer for example can be promoted continuously along curved surface.Make To substitute, solar cell wafer repeatedly can discretely be promoted along curved surface.
The curved surface can be the vacuum manifold of the bottom surface applying vacuum (for example) to solar cell wafer Upper surface bending part.The vacuum that vacuum manifold applies to the bottom surface of solar cell wafer can be along solar energy The direction of travel of battery wafer and change, and the area of solar cell wafer can be cut in proper order for example in vacuum manifold Reach maximum intensity in domain.
This method may include the curved upper surface transmission solar cell wafer along vacuum manifold using porous belts, The bottom surface of solar cell wafer is applied vacuum to during this by the perforation on porous belts.The perforation can appoint Selection of land is arranged on porous belts, so that solar cell wafer must be covered along the leading edge and rear of itself direction of travel Porous belts at least one perforation above, thus pulled towards curved surface by vacuum, but this is not required.
This method may include：Solar cell wafer is promoted along the flat site of the upper surface of vacuum manifold, is reached true The transition with first curvature is bent region in empty manifold upper surface；Solar cell wafer is then advanced to vacuum manifold It being cut in the cutting region of solar cell wafer in proper order in upper surface, the cutting region of vacuum manifold has torsion, Torsion is received tighter than first curvature.This method, which may also include, is advanced to the solar cell of cutting in vacuum manifold Cutting rear region with third curvature, third curvature are received tighter than torsion.
In any of the above-described kind of variations, this method may include between solar cell wafer and curved surface, first One end that line drawing is carved at every, the other end that line drawing is then carved at every apply stronger vacuum, to carve line drawing along every Asymmetric stress distribution is provided, forms the core of single cutting crackle to help to carve line drawing along every, and contribute to Single cutting crackle carves line drawing sprawling along every.Additionally or alternatively, in any of the above-described kind of variations, this method It may include the quarter line drawing in solar cell wafer being orientated at an angle with vacuum manifold so that paint every quarter Line, one end more early reach the bending cutting region of vacuum manifold compared to the other end.
In any of the above-described kind of variations, this method may include that the EDGE CONTACT in the solar cell of cutting is bent Before surface, just the solar cell of cutting is removed from curved surface.For example, this method may include curved with manifold Curved surface is tangent or approximate tangent direction on, battery is removed with the big speed of the speed advanced along manifold than battery.This can To bring completion with the movement of such as arranged tangential, or completed with any other suitable mechanism.
In any of the above-described kind of variations, this method may include marking a plurality of quarter line drawing in solar cell wafer, Then electroconductive binder grafting material is applied in the top of solar cell wafer or the multiple portions of bottom surface, it Afterwards solar cell wafer is cut along quarter line drawing.At this point, the solar cell of each obtained cutting can be along its top Some electroconductive binder grafting material is arranged in portion or the cut edge of bottom surface.Conductive glue can applied by carving line drawing It is formed using any suitable quarter method of painting before or after mixture grafting material.Carve line drawing for example can paint method by laser incising It is formed.
In any of the above-described kind of variations, solar cell wafer can be the silicon sun of square or dead square It can battery wafer.
On the other hand, the method for making solar cell string includes：The solar cell of multiple rectangles is in line cloth It sets, so that the long side of adjacent rectangle solar cell is overlapped in a manner of covering, be arranged between electroconductive binder grafting material；So After so that conductive bonding material is cured, to by adjacent overlapping rectangles solar cell engagement to each other, and by these battery strings Connection electrical connection.Solar cell can for example by it is above-mentioned for manufacture solar cell method any variations come Manufacture.
On the one hand, the method for making solar cell string includes：It is every in one or more square solar cells Rear surface metallization pattern is formed on a battery, then uses single masterplate, before being incited somebody to action completely in single stencilization step In surface metalation pattern stencilization to each battery in one or more square solar cells.These steps can It executes, if applicable, can also be performed simultaneously in any order.So-called " complete front surface metallization pattern ", means After stencilization step, in the front surface it is not necessary that additional metallization material to be deposited to square solar cell just It can complete front surface metallization.This method further includes：Each square solar cell is divided into two or more rectangles too Positive energy battery, to form multiple rectangle solar cells, each rectangle sun with one or more square solar cells Energy battery all has rear surface metallization pattern and complete front surface metallization pattern；By multiple rectangle solar cells at Straight line is arranged, the long side of adjacent rectangle solar cell is made to be overlapped in a manner of covering；Then by the adjacent overlapping square of every a pair Rectangle solar cell in shape solar cell is conductively joined to each other, and conductive bonding material is allowed to be arranged at the two Between rectangle solar cell, for this is electric to the front surface metallization pattern of a battery in rectangle solar cell It is connected to this rear surface metallization pattern to another battery in rectangle solar cell, thus by the multiple rectangle Solar cell is electrically connected in series.
Masterplate can be configured so that in masterplate for limiting the front surface on one or more square solar cells All parts of the one or more features of metallization pattern be all limited to during stencilization in the masterplate be located at masterplate The physical connection of other parts in residing plane.
Front surface metallization pattern on each rectangle solar cell can for example include perpendicular to rectangle solar cell Long side be orientated multiple finger-shaped materials, but front surface metallization pattern do not make the finger-shaped material in front surface metallization pattern that This physical connection.
It is this subject description discloses the solar cell that the carrier recombination losses at solar battery edge mitigate Solar cell is for example without the cut edge for promoting Carrier recombination；Method for manufacturing such solar cell；With And superbattery is formed using such solar cell by (overlapping) arrangement is covered.
On the one hand, the method for manufacturing multiple solar cells includes：One or more front surface amorphous silicon layers are deposited to In the front surface of crystal silicon wafer；One or more rear surface amorphous silicon layers are deposited in the rear surface of crystal silicon wafer, institute State the opposite side that rear surface is located at the front surface of crystal silicon wafer；By one or more front surface amorphous silicon layer patterns, thus One or more front surface grooves are formed in one or more front surface amorphous silicon layers；Front surface passivation layer deposition to one In the top of a or multiple front surface amorphous silicon layers and front surface groove；By one or more rear surface amorphous silicon layer patterns Change, to form one or more rear surface grooves in one or more rear surface amorphous silicon layers；Then rear surface is passivated Layer deposits in top and the rear surface groove of one or more rear surface amorphous silicon layers.One or more rear surface grooves In each groove be formed with a corresponding front surface groove in line.This method further includes at one or more Cut the crystal silicon wafer at a cutting planes, each cutting planes in the different corresponding front surface groove of a pair and It is placed in the middle or substantially placed in the middle on rear surface groove.At work, front surface amorphous silicon layer will be by light for obtained solar cell Irradiation.
In some variations, front surface groove is only formed, without forming rear surface groove.In other modifications In form, rear surface groove is only formed, without forming front surface groove.
This method may include：One or more front surface grooves are formed, crystal is reached for penetrating front surface amorphous silicon layer The front surface of silicon wafer, and/or one or more rear surface grooves are formed, it is non-for penetrating one or more rear surfaces Crystal silicon layer reaches the rear surface of crystal silicon wafer.
This method may include forming front surface passivation layer and/or rear surface passivation layer with transparent conductive oxide.
Pulse laser or diamond bit can be used to create cut point (for example, about 100 microns long).It can make in proper order Cause high compression with continuous-wave laser and cooling nozzles and stretch thermal stress, and guides the cutting in crystal silicon wafer complete Full sprawling, to cut crystal silicon wafer in the punishment of one or more cutting planes.Alternatively, can be cut in one or more With machine cuts crystal silicon wafer at plane.Any suitable cutting method can be used.
One or more front surface amorphous silicon layer/crystal silicon layers can form n-p knots with crystal silicon wafer, in such case Under, it may be preferred to it is cut from the back-surface side of crystal silicon wafer.Alternatively, one or more rear surface amorphous Silicon layer/crystal silicon layer can form n-p knots with crystal silicon wafer, in this case, it is possible to preferably from crystal silicon wafer Front-surface side is cut.
On the other hand, the method for manufacturing multiple solar cells includes：One is formed in the first surface of crystal silicon wafer A or multiple grooves；One or more amorphous silicon layers are deposited on the first surface of crystal silicon wafer；Passivation layer deposition is arrived On one or more amorphous silicon layers in the groove and on the first surface of crystal silicon wafer；One or more amorphous On silicon-containing layer deposition to the second surface of crystal silicon wafer, the second surface is located at the opposite of the first surface of crystal silicon wafer Side；Then the crystal silicon wafer is cut at one or more cutting planes, each cutting planes are one or more It is placed in the middle or substantially placed in the middle on a different groove in a groove.
This method may include forming passivation layer with transparent conductive oxide.
Laser can be used to cause thermal stress in crystal silicon wafer, thus will be brilliant at one or more cutting planes Body silicon wafer is cut.Alternatively, can be at one or more cutting planes with machine cuts crystal silicon wafer.It can be used and appoint What suitable cutting method.
One or more front surface amorphous silicon layer/crystal silicon layers can form n-p knots with crystal silicon wafer.Alternatively, one A or multiple rear surface amorphous silicon layer/crystal silicon layers can form n-p junction with crystal silicon wafer.
On the other hand, solar panels include multiple superbatteries, and each superbattery includes the multiple of arrangement that are in line Solar cell, the wherein end of adjacent solar battery are overlapped in a manner of covering and are conductively joined to each other, thus will Solar cell is electrically connected in series.Each solar cell includes：Crystalline silicon substrate；One or more first surface amorphous Silicon layer is arranged on the first surface of crystalline silicon substrate to form n-p junction；One or more second surface amorphous silicon layers, It is arranged on the second surface of crystalline silicon substrate, the second surface is located at the opposite side of the first surface of crystalline silicon substrate； And there is current-carrying in passivation layer, the edge of the edge or second surface amorphous silicon layer that prevent first surface amorphous silicon layer Son is compound, or has not only prevented the edge of first surface amorphous silicon layer but also prevented the edge of second surface amorphous silicon layer from occurring Carrier recombination.Passivation layer may include transparent conductive oxide.
Solar cell can be for example, by using otherwise disclosed any method is come in above-outlined or this specification It is formed.
In conjunction with attached drawing, after the description in more detail below of the present invention, these and other of the invention are implemented Example, feature and advantage will become clearer to those skilled in the art, first below DESCRIPTION OF DRAWINGSFigure.
Description of the drawings
Fig. 1 shows the cross-sectional view of a string of solar cells arranged, be connected in series in a manner of stacking, wherein The end of adjacent solar battery is overlapped, to form stacking formula superbattery.
Fig. 2A is shown before the exemplary rectangular solar cell that can be used to form stacking formula superbattery (day side) The schematic diagram on surface and front surface metallization pattern.
Fig. 2 B and Fig. 2 C show the exemplary square of two with radiused corners that can be used to form stacking formula superbattery The schematic diagram on (day side) surface and front surface metallization pattern before shape solar cell.
Fig. 2 D and Fig. 2 E show the rear surface of solar cell shown in Fig. 2A and illustrative rear surface metallization pattern Schematic diagram.
Fig. 2 F and Fig. 2 G respectively illustrate the rear surface of Fig. 2 B and solar cell shown in fig. 2 C and illustrative rear table The schematic diagram of face metallization pattern.
Before Fig. 2 H show another exemplary rectangular solar cell that can be used to form stacking formula superbattery The schematic diagram on (day side) surface and front surface metallization pattern.Front surface metallization pattern includes discrete engagement pad, each Engagement pad is all surround by barrier, and the barrier is configured to prevent the uncured conductive adhesion being deposited in its engagement pad Agent grafting material flows far from engagement pad.
Fig. 2 I show the viewgraph of cross-section of the solar cell of Fig. 2 H, and identify front surface metallization pattern Details, the details show in Fig. 2 J and Fig. 2 K the two expanded views, including engagement pad and around engagement pad barrier it is more A part.
Fig. 2 J show the expanded view of the details in Fig. 2 I.
Fig. 2 K show the expanded view of the details in Fig. 2 I, wherein uncured conductive adhesive grafting material is shielded Barrier is substantially restricted to the position of discrete engagement pad.
Fig. 2 L show the signal of the rear surface and illustrative rear surface metallization pattern of the solar cell of Fig. 2 H Figure.Rear surface metallization pattern includes discrete engagement pad, and each engagement pad is surround by barrier, and the barrier is constructed use Engagement pad is flowed far from preventing from being deposited on the uncured conductive adhesive grafting material in its engagement pad.
Fig. 2 M show the viewgraph of cross-section of the solar cell of Fig. 2 L, and identify rear surface metallization pattern Details, which shows in Fig. 2 N this expanded view, includes the multiple portions of engagement pad and the barrier around engagement pad.
Fig. 2 N show the expanded view of the details in Fig. 2 M.
Fig. 2 O show that another variations of the metallization pattern including barrier, the barrier are configured to prevent Only uncured conductive adhesive grafting material flows far from engagement pad.Barrier abuts the side of engagement pad, and than contact It is padded.
Fig. 2 P show that another variations of the metallization pattern of Fig. 2 O, wherein barrier abut engagement pad at least Both sides.
Fig. 2 Q show the rear surface of another exemplary rectangular solar cell and illustrative rear surface metallization figure The schematic diagram of case.Rear surface metallization pattern includes substantially extending solar cell long side along the edge of solar cell Length continuously contact with pad.Engagement pad is surround by barrier, and the barrier is configured to prevent deposition over contact pads not Solidification conductive adhesive grafting material flows far from engagement pad.
Before Fig. 2 R show another exemplary rectangular solar cell that can be used to form stacking formula superbattery The schematic diagram on (day side) surface and front surface metallization pattern.Front surface metallization pattern includes along solar cell Discrete engagement pad in a row is arranged at edge, and on the inside of this row's engagement pad and is parallel to what this row's engagement pad extended Elongate lead.Elongate lead forms barrier, and the barrier is configured to prevent the uncured conduction being deposited in its engagement pad Property adhesive bond material flows far from engagement pad and then flows on the effective coverage of solar cell.
Fig. 3 A show the schematic diagram of illustrative methods, can be by the dead square silicon of standard shape size using this method Solar cell is divided into the different square of two length that (for example, be cut into or resolve into) can be used to form stacking formula superbattery Shape solar cell.
Fig. 3 B and Fig. 3 C show the schematic diagram of another illustrative methods, can be by dead square silicon too using this method Positive energy battery is divided into rectangle solar cell.Fig. 3 B show the front surface of chip and illustrative front surface metallization pattern. Fig. 3 C show the rear surface of chip and illustrative rear surface metallization pattern.
Fig. 3 D and Fig. 3 E show the schematic diagram of illustrative methods, can be by square silicon solar cell using this method It is divided into rectangle solar cell.Fig. 3 D show the front surface of chip and illustrative front surface metallization pattern.Fig. 3 E are shown The rear surface of chip and illustrative rear surface metallization pattern.
Fig. 4 A show the partial view of the front surface of exemplary rectangular superbattery, which includes such as Such as rectangle solar cell shown in Fig. 2A, the stacking mode of these rectangle solar cells as shown in Figure 1 are arranged.
Fig. 4 B and Fig. 4 C respectively illustrate the front view and rearview of exemplary rectangular superbattery, the super electricity of the rectangle Pond includes " V words " rectangle solar cell with chamfering as shown in such as Fig. 2 B, these rectangle solar cells press Fig. 1 Shown in cover mode arrange.
Fig. 5 A show the schematic diagram of the exemplary rectangular solar energy module including multiple stacking formula rectangle superbatteries, The length of wherein each superbattery long side is approximately equal to the half of solar energy module bond length.Pairs of superbattery end Opposite end is arranged and is formed multiple rows of, and the long side of wherein superbattery is parallel to the short side of module.
Fig. 5 B show showing for another exemplary rectangular solar energy module including multiple stacking formula rectangle superbatteries It is intended to, wherein the length of each superbattery long side is approximately equal to the length of solar energy module short side.Superbattery is arranged to Its long side is parallel with the short side of module.
Fig. 5 C show showing for another exemplary rectangular solar energy module including multiple stacking formula rectangle superbatteries It is intended to, wherein the length of each superbattery long side is approximately equal to the length of solar energy module long side.Superbattery is arranged to Its long side is parallel with the long side of module.
Fig. 5 D show the schematic diagram of the exemplary rectangular solar energy module including multiple stacking formula rectangle superbatteries, The length of wherein each superbattery long side is approximately equal to the half of solar energy module long side length.Pairs of superbattery end Opposite end is arranged and is formed multiple rows of, and the long side of wherein superbattery is parallel to the long side of module.
Fig. 5 E show the schematic diagram for another exemplary rectangular solar energy module for being configured similarly to Fig. 5 C, wherein shape All solar cells at superbattery are all the V word solar cells for having chamfering, the chamfering and are partitioned into too from it The turning of the pseudo-square wafers of positive energy battery corresponds to.
Fig. 5 F show the schematic diagram for another exemplary rectangular solar energy module for being configured similarly to Fig. 5 C, wherein shape Solar cell at superbattery includes the mixture of V words solar cell and rectangle solar cell, these solar-electricities Pond is arranged to reproduction and is partitioned into the shape of the pseudo-square wafers of these solar cells from it.
Fig. 5 G show the schematic diagram for another exemplary rectangular solar energy module for being configured similarly to Fig. 5 E, only Adjacent V words solar cell in superbattery is arranged to mutual mirror image, so the edge length that they are overlapped is equal.
Fig. 6 shows the exemplary arrangement of the three row's superbatteries interconnected with flexible electrical interconnection, and this arrangement is used for will Often the superbattery in row is one another in series, and for each row to be connected in parallel to each other.These rows may, for example, be the solar energy mould of Fig. 5 D Three row in the block.
Fig. 7 A show the example flexible interconnection piece that can be used to interconnect superbattery in series or in parallel.One Patternings are presented in a little examples, these patternings are along exemplary long axis, short axle, or not only along exemplary long axis but also along example Short axle increase exemplary flexible (mechanical plasticity).Fig. 7 A show the long interconnection piece construction of illustrative stress elimination, these Construction can be not only used for being connected in the tap hiding as described herein of superbattery, it is also possible to be connected to super electricity The front surface in pond or the interconnection piece of the terminal contact in rear surface.It is special that Fig. 7 B-1 and Fig. 7 B-2 show that plane external carbuncle is eliminated The example of sign.Fig. 7 B-1 and Fig. 7 B-2 show that illustrative long interconnection piece construction, the construction include that plane external carbuncle eliminates spy Sign, can be not only used for being connected in the hiding tap of superbattery, it is also possible to be connected to superbattery front surface or after The interconnection piece of terminal contact on surface.
Fig. 8 A show the details A of Fig. 5 D (i.e. the viewgraph of cross-section of the exemplary solar energy module of Fig. 5 D), specifically illustrate It is joined to the cross-section details of the flexible electrical interconnection of the rear surface terminal contact of each row's superbattery.
Fig. 8 B show the details C of Fig. 5 D (i.e. the viewgraph of cross-section of the exemplary solar energy module of Fig. 5 D), specifically illustrate It is joined to the cross-section details of the flexible electrical interconnection of (day side) surface terminal contact before each row's superbattery.
Fig. 8 C show the details B of Fig. 5 D (i.e. the viewgraph of cross-section of the exemplary solar energy module of Fig. 5 D), specifically illustrate It is arranged to the cross-section details by the flexible interconnection of two superbattery interconnected in series in a row.
Fig. 8 D to Fig. 8 G show in one end of row's superbattery, and the edge join of neighbouring solar energy module is to super The additional example of the electrical interconnection of the front terminal contact of battery.These exemplary interconnection pieces are configured to the front surface in module On only take up the area of very little.
Fig. 9 A show showing for another exemplary rectangular solar energy module including six stacking formula rectangle superbatteries It is intended to, wherein the length of each superbattery long side is approximately equal to the length of solar energy module long side.Superbattery is arranged to Six rows, this six row are connected in parallel to each other electrical connection, and with the bypass diode in the terminal box that is arranged in solar energy module rear surface Parallel connection electrical connection.Between superbattery and bypass diode be electrically connected by the welding across embedded module laminate structures come It realizes.
Fig. 9 B show showing for another exemplary rectangular solar energy module including six stacking formula rectangle superbatteries It is intended to, wherein the length of each superbattery long side is approximately equal to the length of solar energy module long side.Superbattery is arranged to Six rows, this six row are connected in parallel to each other electrical connection, the also terminal box with an adjacent edges being arranged in solar energy module rear surface Interior bypass diode parallel connection electrical connection.Second terminal box is located at the near opposing edges in solar energy module rear surface.It is super Being electrically connected between battery and bypass diode is made into the external cable across the two terminal boxes.
Fig. 9 C show the exemplary double-sided glass rectangle solar energy module for including six stacking formula rectangle superbatteries, The length of wherein each superbattery long side is approximately equal to the length of solar energy module long side.Superbattery is arranged to each other Six rows of parallel connection electrical connection.Two terminal boxes are mounted in the opposite edges of module, to maximize the effective area of module.
Fig. 9 D show the side view of solar energy module shown in Fig. 9 C.
Fig. 9 E show the exemplary solar energy module of another kind for including six stacking formula rectangle superbatteries, wherein often The length of a superbattery long side is approximately equal to the length of solar energy module long side.Superbattery is arranged to six rows, three pairs of electricity Pond row is connected respectively to the electric power controller on solar energy module.
Fig. 9 F show the exemplary solar energy module of another kind for including six stacking formula rectangle superbatteries, wherein often The length of a superbattery long side is approximately equal to the length of solar energy module long side.Superbattery is arranged to six rows, Mei Yipai The electric power controller being connected respectively on solar energy module.
Fig. 9 G and Fig. 9 H show other implementations for the framework that module level power management is carried out using stacking formula superbattery Example.
Figure 10 A show the exemplary circuit schematic diagram of solar energy module as shown in Figure 5 B.
Figure 10 B-1 and Figure 10 B-2 show the solar energy module as shown in Figure 5 B of the circuit diagram with Figure 10 A The example physical layout of various electrical interconnections.
Figure 11 A show the exemplary circuit schematic diagram of solar energy module as shown in Figure 5A.
Figure 11 B-1 and Figure 11 B-2 show the solar energy module as shown in Figure 5A of the circuit diagram with Figure 11 A The example physical layout of various electrical interconnections.
Figure 11 C-1 and Figure 11 C-2 show the solar energy module as shown in Figure 5A of the circuit diagram with Figure 11 A Another example physical layout of various electrical interconnections.
Figure 12 A show another exemplary circuit schematic diagram of solar energy module as shown in Figure 5A.
Figure 12 B-1 and Figure 12 B-2 show the solar energy module as shown in Figure 5A of the circuit diagram with Figure 12 A The example physical layout of various electrical interconnections.
Figure 12 C-1, Figure 12 C-2 and Figure 12 C-3 show the sun as shown in Figure 5A of the circuit diagram with Figure 12 A Another example physical layout of the various electrical interconnections of energy module.
Figure 13 A show another exemplary circuit schematic diagram of solar energy module as shown in Figure 5A.
Figure 13 B show another exemplary circuit schematic diagram of solar energy module as shown in Figure 5 B.
Figure 13 C-1 and Figure 13 C-2 show the solar energy module as shown in Figure 5A of the circuit diagram with Figure 13 A The example physical layout of various electrical interconnections.After the physical layout of Figure 13 C-1 and Figure 13 C-2 are slightly modified, suitable for having The solar energy module as shown in Figure 5 B of the circuit diagram of Figure 13 B.
Figure 14 A show another exemplary rectangular solar energy module including multiple stacking formula rectangle superbatteries Schematic diagram, wherein the length of each superbattery long side is approximately equal to the half of solar energy module bond length.Pairs of is super The end-to-end arrangement of battery and formed multiple rows of, the long side of wherein superbattery is parallel to the short side of module.
Figure 14 B show the exemplary circuit schematic diagram of solar energy module as shown in Figure 14 A.
Figure 14 C-1 and Figure 14 C-2 show the solar energy module as shown in Figure 14 A of the circuit diagram with Figure 14 B The example physical layout of various electrical interconnections.
Figure 15 shows the various electrical interconnections of the solar energy module as shown in Figure 5 B of the circuit diagram with Figure 10 A Another example physical layout.
Figure 16 is shown the exemplary arrangement of the intelligent switch of two solar energy module interconnected in series.
Figure 17 shows the flow charts for the illustrative methods for using superbattery making solar energy module.
Figure 18 shows the flow chart for another illustrative methods that solar energy module is made using superbattery.
Figure 19 A to Figure 19 D are shown can make the cured exemplary arrangement of superbattery using heat and pressure.
Figure 20 A to Figure 20 C schematically show the example devices that can be used to cut and carve the solar cell painted.It should Equipment for cut be coated with conductive adhesive grafting material may be particularly advantageous when painting superbattery at quarter.
Figure 21 shows the representative white back plate that " zebra stripes " are added with concealed wire, which can be including parallel Superbattery row solar energy module in use, with mitigate superbattery with it is visible multiple from the front of module in back plate Visual contrast between part.
Figure 22 A show plan view when being in hot spot state using the conventional modules that conventional band connects.Figure 22 B show The plan view when module according to the thermal diffusion method of multiple embodiments being utilized to be also at hot spot state is gone out.
Figure 23 A to Figure 23 B show the example of the layout of the superbattery string with chamfering battery.
Figure 24 to Figure 25 shows the simplification viewgraph of cross-section for including the array by the multiple modules for covering construction assembling.
Figure 26 shows the schematic diagram on rear (in the shade side) surface of solar energy module, and the super electricity of stacking formula is shown in figure The exemplary electrical of the terminal box on terminal electric contact to rear side before pond on (day side) surface interconnects.
Figure 27 shows the schematic diagram on rear (in the shade side) surface of solar energy module, shown in figure two in parallel or More cover the exemplary electrical interconnection of formula superbattery, and the terminal electric contact wherein before superbattery on (day side) surface connects It is connected to each other, and is connected to the terminal box in rear side.
Figure 28 shows the schematic diagram on rear (in the shade side) surface of solar energy module, shown in figure two in parallel or More cover another exemplary electrical interconnection of formula superbattery, the terminal wherein before superbattery on (day side) surface Electric contact is connected to each other, and is connected to the terminal box in rear side.
Figure 29 shows the partial cross-section perspective view of two superbatteries, and it is adjacent super to show that use is clipped in figure Superbattery is electrically connected in series and electrical connection is supplied to terminal box by the flexible interconnection between the overlapped ends of battery. Figure 29 A show the enlarged view of area of interest in Figure 29.
Figure 30 A show that electrical interconnection is joined to its front surface terminal contact and the exemplary of rear surface terminal contact surpasses Grade battery.Figure 30 B show superbattery shown in two Figure 30 A of interconnected in parallel.
Figure 31 A to Figure 31 C, which are shown, can be used to form the hiding tap for being connected to superbattery as described herein Exemplary back surface metallization pattern schematic diagram.
Figure 32 to Figure 33 shows the example for being used together hiding tap with interconnection piece, wherein interconnection piece about Extend the full duration of superbattery.
Figure 34 A to Figure 34 C show the rear surface (Figure 34 A) for being joined to superbattery and front surface (Figure 34 B to figure The example of the interconnection piece of terminal contact on 34C).
Figure 35 to Figure 36 shows the example for being used together hiding tap with short interconnection piece, wherein short interconnection piece Gap across between adjacent superbattery does not extend internally substantially along the long axis of rectangle solar cell but.
Figure 37 A-1 to Figure 37 F-3 show the short interconnection piece of hiding tap including plane stress elimination feature Representative configuration.
Figure 38 A-1 to Figure 38 B-2 show the short interconnection piece of hiding tap including plane external carbuncle elimination feature Representative configuration.
Figure 39 A-1 and Figure 39 A-2 show the exemplary structure of the short interconnection piece of hiding tap including alignment characteristics It makes.Figure 39 B-1 and Figure 39 B-2 show the representative configuration of the asymmetric short interconnection piece of hiding tap of tab length.
Figure 40 and Figure 42 A to Figure 44 B show the exemplary solar energy module layout using hiding tap.
Figure 41 shows the exemplary circuit schematic diagram of the solar energy module layout of Figure 40 and Figure 42 A to Figure 44 B.
Figure 45 shows the electric current in the exemplary solar energy module of bypass diode conducting.
Figure 46 A to Figure 46 B show by solar energy module respectively on the direction for being parallel to each row's superbattery and Relative motion between the solar energy module component caused by the thermal cycle on the direction of each row's superbattery.
Figure 47 A to Figure 47 B respectively illustrate use the exemplary solar energy module layout of the another kind of hiding tap with And corresponding electrical schematic diagram.
Figure 48 A to Figure 48 B show by hiding tap be used in combination with embedded bypass diode it is other too Positive energy battery module layout.
Figure 49 A to Figure 49 B respectively illustrate for customary DC voltage is supplied to micro- inverter solar energy module and The block diagram of high voltage solar energy module for High Level DC Voltage to be supplied to micro- inverter as described herein.
Figure 50 A to Figure 50 B show the exemplary object for the exemplary high voltage solar energy module for assembling bypass diode Removing the work office and electrical schematic diagram.
Figure 51 A to Figure 55 B show that the high voltage solar energy module including covering formula superbattery carries out module level power The exemplary architecture of management.
Figure 56 shows that the exemplary arrangement of six superbatteries in six parallels, the wherein end of adjacent row are wrong It opens and by flexible electrical interconnection interconnected in series.
Figure 57 A schematically show photovoltaic system, which includes being connected in parallel to each other to be electrically connected and be electrically connected to Multiple High Level DC Voltages of serial type inverter cover formula solar cell module.Figure 57 B show the figure being deployed on roof Photovoltaic system shown in 57A.
Figure 58 A to Figure 58 D show the arrangement of current-limting fuse and blocking diode, wherein two pole of current-limting fuse and choked flow Pipe can be used to prevent High Level DC Voltage from covering formula solar cell module short circuit, to avoid being dissipated and be somebody's turn to do due to this short circuit Module other High Level DC Voltages of electrical connection in parallel cover a large amount of power that formula solar cell module generates.
Figure 59 A to Figure 59 B show that two or more High Level DC Voltages cover formula solar cell module in header box The exemplary arrangement of middle electrical connection in parallel, the header box may include current-limting fuse and blocking diode.
Multiple High Level DC Voltages that Figure 60 A to Figure 60 B each illustrate electrical connection in parallel cover formula solar cell module Current vs voltage curve figure and power vs. voltage curve graph.The curve graph of Figure 60 A be directed to module include it is reverse-biased too The exemplary cases of positive energy battery.It includes one or more reverse-biased solar-electricities that the curve graph of Figure 60 B, which is directed to some modules, The exemplary cases in pond.
Figure 61 A show that each superbattery about utilizes the example of the solar energy module of 1 bypass diode.Figure 61 C show The example of the solar energy module of the bypass diode using nested type construction is gone out.Figure 61 B are shown using flexible electrical interconnection And the representative configuration of the bypass diode connected between two adjacent superbatteries.
Figure 62 A to Figure 62 B schematically show the side view and top view of another exemplary cutting tool.
Figure 63 A are schematically shown to be arranged using illustratively asymmetric vacuum, is controlled in cut crystal and is painted along quarter Line forms the core of crackle and controls crackle to be spread along line drawing is carved.Figure 63 B are schematically shown using illustrative symmetrical true Sky arrangement provides cutting smaller control compared to the arrangement of Figure 63 A.
Figure 64 schematically shows the exemplary hollow manifold that can be used in the cutting tool of Figure 62 A to Figure 62 B The top view of a part.
Figure 65 A and Figure 65 B each provide the schematic top of exemplary hollow manifold shown in the Figure 64 covered by porous belts View and perspective schematic view.
Figure 66 schematically shows the exemplary hollow manifold that can be used in the cutting tool of Figure 62 A to Figure 62 B Side view.
Figure 67 schematically shows the cutting sun being covered in above the exemplary arrangement of porous belts and vacuum manifold It can battery.
Figure 68, which is schematically shown, has cut solar cell and standard size chip (during exemplary cut From its cut solar cell) on non-cut portion relative position and relative orientation.
Figure 69 A to Figure 69 G are schematically shown can continuously remove the equipment for having cut solar cell from cutting tool And method.
Figure 70 A to Figure 70 C provide the orthogonal of another variations of the exemplary cutting tool of Figure 62 A to Figure 62 B View.
The exemplary cutting tool that Figure 71 A and Figure 71 B provide Figure 70 A to Figure 70 C is in two differences of cutting process The perspective view when stage.
Figure 72 A to Figure 74 B show the exemplary cutting tool of Figure 70 A to Figure 70 C porous belts and vacuum manifold it is thin Section.
Figure 75 A to Figure 75 G, which are shown, can be used in the exemplary cutting tool of Figure 10 A to Figure 10 B-1 and Figure 10 B-2 The details of the several exemplary bore pattern of porous vacuum band.
Figure 76 shows the exemplary front surface metallization pattern on rectangle solar cell.
Figure 77 A to Figure 77 B show the exemplary rear surface metallization pattern on rectangle solar cell.
Figure 78 shows the exemplary front surface metallization pattern on square solar cell, the square solar energy Battery can be cut into multiple rectangle solar cells, and each rectangle solar cell has front surface gold shown in Figure 76 Categoryization pattern.
Figure 79 shows the exemplary rear surface metallization pattern on square solar cell, the square solar energy Battery can be cut into multiple rectangle solar cells, and each rectangle solar cell has rear surface gold shown in Figure 77 A Categoryization pattern.
Figure 80 is the schematic diagram of the HIT solar cells of stock size, which utilizes conventional cutting method quilt Fillet solar cell is cut into, to generate the cut edge for promoting Carrier recombination.
Figure 81 A to Figure 81 J, which schematically show to cut into the HIT solar cells of stock size, lacks promotion load Step in the illustrative methods of the fillet solar cell of the sub compound cut edge of stream.
Figure 82 A to Figure 82 J, which schematically show to cut into the HIT solar cells of stock size, lacks promotion load Step in another illustrative methods of the fillet solar cell of the sub compound cut edge of stream.
Specific implementation mode
Detailed description below should be read with reference to the drawings, in all different attached drawings, identical reference label Refer to similar element.Attached drawing (being not necessarily drawn to scale) depicts selective embodiment, and has no intention to limit the model of the present invention It encloses.Specific implementation mode shows the principle of the present invention in a manner of illustrating and is infinite.The specific implementation mode describes this Several embodiments of invention, several reorganization form, variations, alternative solution and purposes, including it is presently believed that be to implement The optimal mode of the present invention；Those skilled in the art read after the specific implementation mode, it will be clear that understand using the present invention Technology manufacture the present invention solar cell module method.
Unless context clearly otherwise dictates, the singulative that is otherwise used in this specification and appended claims "one", "an" and "the", all include multiple referring to thing.In addition, term " parallel " be used to refer to it is " parallel or substantially flat Row ", covers the minor deviations with parallel geometry, and does not require that any parallel arrangement as described herein is all completely flat Capable.Term " vertical " is used to refer to " vertical or substantially perpendicular ", covers the minor deviations with perpendicular geometry, and is not It is required that any be arranged vertically as described herein is all completely vertical.Term " square " be used to refer to " square or substantially just It is rectangular ", cover the minor deviations with square, such as with the substantial of chamfering (such as radiused corners or other truncated corners) Square shape.Term " rectangle " is used to refer to " rectangle or substantial rectangular ", covers the minor deviations with rectangle, such as with Chamfering (such as radiused corners or other truncated corners) it is substantially rectangular in shape.
Subject description discloses the efficient stacking formula of the silicon solar cell in solar cell module arrangement, Yi Jike Front surface metallization pattern, rear surface metallization pattern and the interconnection piece of the solar cell used in such arrangement.This theory Bright book also discloses the method for manufacturing such solar energy module.Solar cell module is in " sun " (non-concentrating) irradiation Under be advantageously used, physical size and electrical specification can substitute conventional silicon solar cell module.
Fig. 1 shows the viewgraph of cross-section for a string of the solar cells 10 being connected in series with, these solar cells are to cover Superbattery 100, wherein the end overlapping of adjacent solar battery are arranged and be electrically connected to form to mode.Each solar cell 10 all including semiconductor diode structure and the electric contact for being connected to semiconductor diode structure, and solar cell 10 is by illumination The electric current wherein generated when penetrating can be supplied to external loading by these electric contacts.
In the example of this specification description, each solar cell 10 is crystal silicon solar energy battery, before having (day side) surface metalation pattern and rear (in the shade side) surface metalation pattern, the setting of front surface metallization pattern are passed in N-shaped On the semiconductor layer for the property led, rear surface metallization pattern is arranged on the conductive semiconductor layer of p-type, these metallization patterns Electric contact is provided for the opposite sides of n-p junction.Any other suitable material system, diode junction is utilized however, can be used Any other suitable solar cell of structure, physical size or electric contact arrangement, to substitute the sun described in this specification Energy mould solar cell 10 in the block, or the supplement as the solar cell.For example, preceding (day side) surface metalation Pattern may be provided on the conductive semiconductor layer of p-type, and rear (in the shade side) surface metalation pattern may be provided at N-shaped conductibility Semiconductor layer on.
Referring again to Fig. 1, in superbattery 100, adjacent solar battery 10 is at them by conductive bonding material reality It is conductively joined in the region being now overlapped each other, the conductive bonding material is golden by the front surface of a solar cell Categoryization pattern is electrically connected to the rear surface metallization pattern of adjacent solar battery.Suitable conductive bonding material may include example Such as electroconductive binder, electrically conductive adhesive film and strip of conductive adhesive and general solder.Preferably, conductive bonding material is in phase Mechanical plasticity is provided in engagement between adjacent solar cell, to which reconciliation is due to the coefficient of thermal expansion of conductive bonding material (CTE) with the CTE of solar cell (for example, CTE of silicon) stress caused by mismatch.To provide this mechanical plasticity, In some variations, conductive bonding material is selected as with the glass transition temperature less than or equal to about 0 DEG C.For into one Step reduces and reconciles the stress of the overlapping edge for being parallel to solar cell because of caused by CTE mismatch, optionally will only lead The multiple discrete positions for electrically engaging the overlapping region that material is applied in along solar cell extend without applying at substantial The continuous lines of the length of solar battery edge.
Front surface and rear surface perpendicular to solar cell measure, by conductive bonding material in the adjacent overlapping sun The thickness of the conductive bond formed between energy battery can for example, less than about 0.1mm.Engagement thin in this way interconnects between reducing battery The resistive loss at place also promotes the heat that any hot spot being wherein likely to occur during superbattery work is sent out along super Cell flow.The thermal conductivity of engagement between solar cell can be greater than or be equal to about 1.5W/ (m-K).
Fig. 2A shows the front surface for the exemplary rectangular solar cell 10 that can be used in superbattery 100.If Properly, it is possible to use the solar cell 10 of other shapes.In the example shown in the series of figures, the front surface metal of solar cell 10 It includes bus 15 and finger-shaped material 20 to change pattern, and bus 15 is arranged adjacent to the edge of a long side of solar cell 10, and puts down Row substantially extends the length of long side in long side；Finger-shaped material 20 is attached perpendicularly to bus, is not only parallel to and extends each other, also The short side for being parallel to solar cell 10 substantially extends the length of short side.
In the example of Fig. 2A, solar cell 10 is about 156mm, wide about 26mm, therefore length-width ratio (bond length/length Edge lengths) it is about 1:6.Six this solar cells can be prepared on the standard-sized silicon wafers of 156mm × 156mm, then Divided (cutting) to provide the solar cell of diagram.In other variations, eight can be prepared by standard silicon wafers Size is about 19.5mm × 156mm, therefore length-width ratio is about 1:8 solar cell 10.More generally, solar cell 10 Can have for example, about 1:2 to about 1:20 length-width ratio, and can be by the chip system of standard size chip or any other suitable dimension It is standby.
Fig. 3 A show illustrative methods, using this method, it is cleavable, decompose or otherwise separate standard shape The dead square silicon solar cell chip 45 of size, and form the rectangle solar cell just described.In this example, from The central part of chip cuts the rectangle solar cell 10L of several full durations, in addition, being cut from the end of chip several A shorter rectangle solar cell 10S, and abandon the chamfering or radiused corners of chip.Solar cell 10L can be used to shape At the stacking formula superbattery of a width, solar cell 10S can be used to form the stacking formula superbattery of narrower width.
Alternatively, chamfering (for example, radiused corners) can be retained in from the solar cell that the end of chip is cut. Fig. 2 B to Fig. 2 C show the front surface of illustrative " V words " rectangle solar cell 10, and the front surface is substantially like Fig. 2A In front surface, but have chamfering, these chamferings are remained from the chip for cutting solar cell.In Fig. 2 B, always The setting on one side shorter in two long sides of line 15, and be parallel to this and substantially extend its length on one side, then at both ends Extend at least partially surrounding the chamfering of solar cell.In Fig. 2 C, bus 15 is longer in two long sides to be arranged on one side, And it is parallel to this and substantially extends its length on one side.Fig. 3 B to Fig. 3 C show the front view of pseudo-square wafers 45 with after View, pseudo-square wafers 45 can be cut along dotted line shown in Fig. 3 C, and front surface shown in Fig. 2A is similar to provide to have Multiple solar cells 10 of metallization pattern, and with two similar to front surface metallization pattern shown in Fig. 2 B Chamfering solar cell 10.
In the exemplary front surface metallization pattern shown in Fig. 2 B, around the two of the extension of the chamfering of battery in bus 15 A end increases with the distance for the part being located at away from bus near battery long side, can respectively have and taper into (gradually change It is narrow) width.Similarly, in the exemplary front surface metallization pattern shown in Fig. 3 B, discrete engagement pad 15 is interconnected The both ends of the thin conducting wire come extend around the chamfering of solar cell, and with away from the solar energy arranged along discrete engagement pad The distance of battery long side increases and tapers into.This taper into is optional, but can not dramatically increase resistive Under the premise of loss, the metal used and the masking to solar cell effective coverage is advantageously reduced.
Fig. 3 D to Fig. 3 E show the front view and rearview of perfect square wafers 47, and perfect square wafers 47 can The dotted line cutting shown in Fig. 3 E, to provide the multiple sun for having and being similar to front surface metallization pattern shown in Fig. 2A It can battery 10.
Chamfering rectangle solar cell can be used to form the superbattery for only including chamfering solar cell.In addition or make To substitute, one or more such chamfering rectangle solar cells can be with one or more non-chamfering rectangle solar cell (examples Such as, Fig. 2A) it is applied in combination, and form superbattery.For example, the end solar cell of superbattery can be the chamfering sun Energy battery, and in-between solar cell can be non-chamfering solar cell.If in superbattery (or more typically Ground, in solar energy module) chamfering solar cell and non-chamfering solar cell is applied in combination, then it may be advantageous that being These solar cells select following sizes：During solar cell working, chamfering solar cell and non-chamfering solar energy The front surface of both batteries is exposed to the area equation under sunlight.In this way by the area of two kinds of solar cells Matching, just make the currents match generated in chamfering solar cell and non-chamfering solar cell, so as to improve including chamfering too It is positive can both battery and non-chamfering solar cell series-connected battery string performance.Such as by adjusting along cut crystal A plurality of line position so that on the direction of solar cell long axis, chamfering solar cell is slightly wider than not Chamfering solar cell, so that it may make the chamfering solar cell cut from same pseudo-square wafers and non-chamfering solar energy Battery it is area matched, to compensate the turning lacked on chamfering solar cell.
Solar energy module can only include following three superbattery：It is only formed by non-chamfering rectangle solar cell super Grade battery, the superbattery that is only formed by chamfering rectangle solar cell, or including chamfering solar cell and the non-chamfering sun Superbattery including energy battery；It may also comprise the arbitrary combination of above-mentioned three kinds of variations of superbattery.
In some cases, it is standard-sized square or dead square solar cell wafer (for example, chip 45 or Chip 47) close to Waffer edge part convert light into for electricity efficiency may than in chip far from edge part it is low.In order to The efficiency for improving obtained rectangle solar cell repaiies one or more edges of chip in some variations It cuts, to first remove less efficient part before cut crystal.It can be such as from the width for the part that Waffer edge is trimmed It is about 1mm to about 5mm.In addition, as shown in Fig. 3 B and Fig. 3 D, it can quilt by the two end solar cells 10 cut from chip Its front surface bus (or discrete engagement pad) 15 is orientated to along its external margin, thus along two edges of chip.Due to In superbattery disclosed in this specification, bus (or discrete engagement pad) 15 is usually Chong Die with adjacent solar cell, So having no effect on the performance of solar cell along the low phototranstormation efficiency at the two edges of chip.Therefore, in some changes In type form, the short side that rectangle solar cell is parallel in square or pseudo-square wafers is trimmed as just describing The edge of orientation, but do not trim and be parallel to the edge that the long side of rectangle solar cell is orientated on chip.In other modification shapes In formula, one, two, three or four of trimming square wafers (for example, chip 47 in Fig. 3 D) as just describing Edge.In other variations, the one, two, three or four long of pseudo-square wafers is trimmed as just describing Edge.
It is less than the long and narrow solar cell of 156mm × 156mm solar cells of standard than, area with aspect (such as Shown in figure) it is advantageously used for reducing the I in solar cell module disclosed in this specification2R resistive powers damage Consumption.In particular, since the silicon solar cell of the area comparison with standard size of solar cell 10 reduces, so solar energy The electric current that battery generates reduces, the electricity in series-connected battery string to directly reduce solar cell and such solar cell Resistive power is lost.In addition, this class rectangle solar cell is arranged in superbattery 100, so that current parallel is in too The short side of positive energy battery flows through superbattery, can shorten electric current and pass through in semi-conducting material arrival front surface metallization pattern The distance that finger-shaped material 20 is had to flow through, and the required length of finger-shaped material can be shortened, to can also reduce resistive power damage Consumption.
As described above, these solar cells are engaged with each other in the overlapping region of the solar cell 10 of overlapping, from And be electrically connected in series these solar cells, compared with the series-connected solar cells string as usual with protruding portion, shorten The length of electrical connection between adjacent solar battery.This has also reduced resistive power losses.
Referring again to Fig. 2A, in the example shown in the series of figures, the front surface metallization pattern on solar cell 10 includes parallel In the optional bypass wire 40 that bus 15 extends and is spaced from.(this bypass wire may be also optionally used for Fig. 2 B to figure In metallization pattern shown in 2C, Fig. 3 B and Fig. 3 D, and shown in Fig. 2 Q, at this time its with discrete engagement pad 15 without It is that continuous bus is applied in combination).Bypass wire 40 interconnects finger-shaped material 20, so that current bypass bus 15 and bypass wire 40 Between the crackle that is likely to form.Such crackle may separate finger-shaped material 20 in multiple positions near bus 15, it is possible that with Other modes are isolated by the multiple regions of solar cell 10 with bus 15.Bypass wire such finger-shaped material separated with Replacement circuit diameter is provided between bus.The example of diagram shows the bypass wire 40 for being parallel to the setting of bus 15, bypass wire 40 extend about the overall length of bus, and interconnect each finger-shaped material 20.This arrangement may be preferred, but be not required.Such as There are bypass wires for fruit, without being parallel to bus extension, without the overall length for extending bus.In addition, bypass wire is at least Two finger-shaped materials are interconnected, but without interconnecting all finger-shaped materials.It can for example be replaced using two or more shorter bypass wires For longer bypass wire.Any suitable for arrangement of bypass wire can be used.The purposes of such bypass wire was at 2 months 2012 Entitled " the Solar Cell With Metallization Compensating For Or Preventing submitted for 13rd The No. 13/371,790 of Cracking " (solar cell with the metallization pattern for compensating or avoiding rupture) is beautiful It is described in more detail in state's patent application, which, which is incorporated by reference, is incorporated herein.
The exemplary front surface metallization pattern of Fig. 2A further includes the far-end general opposite with bus 15 in finger-shaped material 20 The optional end conducting wire 42 that finger-shaped material 20 interconnects.(this end conducting wire may be also optionally used for Fig. 2 B to Fig. 2 C, Fig. 3 B, Fig. 3 D In metallization pattern shown in Fig. 2 Q).The width of conducting wire 42 can be for example roughly the same with finger-shaped material 20.Conducting wire 42 will refer to Shape object 20 interconnects, so that electricity bypass is formed at the crackle between bypass wire 40 and conducting wire 42, to be directed to solar energy Current path is supplied to bus 15 by the region that may be otherwise electrically isolated by such crackle in battery 10.
15 equivalent width of bus before although some examples of diagram are shown, and substantially extend solar cell 10 The length of long side, but this is not required.For example, as described above, preceding bus 15 can be by two or more in front surface point Vertical engagement pad 15 substitutes, these discrete engagement pads 15 can for example be in line arrangement along the side of solar cell 10 each other, example Such as, as shown in Fig. 2 H, Fig. 2 Q and Fig. 3 B.Such discrete engagement pad is optionally interconnected by the thin conducting wire extended between them, Shown in the attached drawing such as (e.g.) mentioned just now.In such variations, the long side perpendicular to solar cell measures, contact The width of pad may be, for example, about 2 to about 20 times of the thin conducting wire for interconnecting engagement pad.There may be individual (for example, small) to connect Touch pad is used for each finger-shaped material in front surface metallization pattern, alternatively, each engagement pad may be connected to two or more and refer to Shape object.For example, front surface engagement pad 15 can be square, or for be parallel to solar cell Elongation of Edge rectangle.Preceding table The width of face engagement pad 15 may be, for example, about 1mm to about 1.5mm perpendicular to the long side of solar cell；Its length is parallel to The long side of solar cell may be, for example, about 1mm to about 10mm.Be parallel to solar cell long side measure, engagement pad 15 it Between spacing may be, for example, about 3mm to about 30mm.
Alternatively, solar cell 10 can lack preceding bus 15 and discrete preceding engagement pad 15, thus only in front surface Metallization pattern includes finger-shaped material 20.In such variations, the electricity that is executed originally by preceding bus 15 or preceding engagement pad 15 Flow collecting function, biography that can completely or partially by two solar cells 10 are engaged with each other in above-mentioned superimposed structure The property led material executes.
Not only lack bus 15 but also the solar cell for lacking engagement pad 15 may include bypass wire 40, and also may not include side Line conductor 40.If there is no bus 15 and engagement pad 15, then bypass wire 40, which can be arranged to, bypasses in bypass wire with before The crackle formed between the part of the solar cell of overlapping is conductively joined in surface metalation pattern.
(such as including bus or discrete engagement pad 15, finger-shaped material 20,40 (if present) of bypass wire and end conducting wire 42 Fruit presence) front surface metallization pattern can for example by as usual be used for such purpose silver paste be formed, then for example, by using normal The method for printing screen of rule is deposited.Alternatively, front surface metallization pattern can be formed by electro-coppering.It can also be used and appoint What his suitable material and technique.In the variations that front surface metallization pattern is formed by silver, discrete preceding table is used Face engagement pad 15 rather than continuous bus 15 along battery edge, reduce the silver content on solar cell, so as to have Sharp ground reduced cost.It, can in the variations that front surface metallization pattern is formed by copper or another conductor cheaper than silver Using continuous bus 15, without having cost disadvantage.
Fig. 2 D to Fig. 2 G, Fig. 3 C and Fig. 3 E show the exemplary rear surface metallization pattern of solar cell.At these In example, rear surface metallization pattern includes the discrete rear table arranged along the one long edge of solar cell rear surface Face engagement pad 25, and substantially cover the hard contact 30 of all residual areas of solar cell rear surface.In the formula of stacking In superbattery, engagement pad 25 is for example joined to the edge cloth of bus or the upper surface along adjacent overlapping solar cell The discrete engagement pad set, to be electrically connected in series two solar cells.For example, each discrete rear surface engagement pad 25 It can be all aligned with corresponding discrete front surface engagement pad 15 in the front surface of overlapping solar cell, and by being only applied to point Conductive bonding material in vertical engagement pad is joined to the corresponding discrete front surface engagement pad 15.For example, discrete engagement pad 25 can be square (Fig. 2 D), or (Fig. 2 E to Fig. 2 G, Fig. 3 C, scheme for the rectangle for being parallel to the Elongation of Edge of solar cell 3E).The width of engagement pad 25 may be, for example, about 1mm to about 5mm perpendicular to the long side of solar cell；Its length is parallel to The long side of solar cell may be, for example, about 1mm to about 10mm.Be parallel to solar cell long side measure, engagement pad 25 it Between spacing may be, for example, about 3mm to about 30mm.
Contact 30 can for example be formed by aluminium and/or electro-coppering.The aluminium back contact 30 of formation usually provides back surface field, It is compound for mitigating the back surface in solar cell, thus improve solar battery efficiency.If contact 30 by copper rather than Aluminium is formed, then contact 30 can be applied in combination with another passivation scheme (for example, aluminium oxide), to similarly mitigate back surface It is compound.Discrete engagement pad 25 can be formed for example by silver paste.Using discrete silver-colored engagement pad 25 rather than along the company of battery edge Continuous silver engagement pad, reduces the silver content in rear surface metallization pattern, this can advantageously reduced cost.
In addition, if solar cell depends on the back surface field provided by the aluminium contact formed to mitigate back surface It is compound, then it can improve solar battery efficiency without being continuous silver contact using discrete silver contact.This is because table after silver Face contact does not provide back surface field, therefore often promotes Carrier recombination, and production above silver contact in solar cells Life and death (invalid) volume.In the solar cell string as usual with tape tabs, these dead volumes are usually by solar energy Welding and/or bus in battery front surface cover, therefore will not lead to any additional loss in efficiency.However, herein The volume for being located at 25 top of rear surface silver engagement pad in disclosed solar cell and superbattery, in solar cell is usual It is not covered completely by front surface metallization pattern, so while any dead volume generated using silver-colored rear surface metallization pattern Product will all reduce the efficiency of battery.Therefore, using discrete silver-colored engagement pad 25 rather than along solar cell rear surface edge Continuous silver-colored engagement pad, the volume in any corresponding dead zone is reduced, so improve the efficiency of solar cell.
Mitigating in the compound variations of back surface independent of back surface field, rear surface metallization pattern can be adopted With along solar cell length extension continuous bus 25 rather than discrete engagement pad 25, (for example) such asFig. 2 QIt is shown.This Kind bus 25 can be formed for example by tin or silver.
Discrete tin engagement pad 25 can be used in other variations of rear surface metallization pattern.Rear surface metallization figure Finger contact shown in the front surface metallization pattern similar to Fig. 2A to Fig. 2 C can be used in the variations of case, and can Lack engagement pad and bus.
Although specific exemplary solar cell shown in the drawings is described as having front surface metallization pattern with after The specific combination of surface metalation pattern, but more generally, front surface metallization pattern and rear surface metallization pattern can be used Any suitable combination.For example, a kind of suitable combination can be used including discrete engagement pad 15, finger-shaped material 20 and optional The silver-colored front surface metallization pattern of bypass wire 40, and including the rear surface of aluminium contact 30 and discrete silver-colored engagement pad 25 gold Categoryization pattern.Another suitable combination can be used including continuous bus 15, finger-shaped material 20 and optional bypass wire 40 Copper front surface metallization pattern, and the rear surface metallization pattern including continuous bus 25 and copper contact 30.
It is adjacent in superbattery for engaging in the process (being described in more detail) of manufacture superbattery Be overlapped solar cell conductive bonding material can only (discretely or continuously) be assigned to solar cell front surface or after In the engagement pad of the edge on surface, without being assigned on peripheral part of solar cell.This reduces the dosage of material, and And as described above, it can reduce or reconcile the stress because of caused by the CTE mismatch of the CTE of conductive bonding material and solar cell. But during or after deposition and before curing, the multiple portions of conductive bonding material may be intended to spread to Except engagement pad, then spread on the corresponding part of solar cell.For example, the binding resin part of conductive bonding material It can be extracted out engagement pad by capillary force, then spread on texture adjacent in solar cell surface or porous part.Separately Outside, during deposition process, some conductive bonding materials may not reach engagement pad, but be deposited to solar cell On the adjacent part on surface, it may then be spread from these adjacent parts to surrounding.This distribution of conductive bonding material and/ Or the inaccurate phenomenon of deposition may weaken the engagement between the solar cell of overlapping, and may damage in solar cell and lead It electrically engages material dispersion and those of is deposited on part thereon or mistakenly.Such as by near each engagement pad or Surrounding forms obstacle or barrier, and thus conductive bonding material is substantially held in the metallization pattern of appropriate position, can mitigated Or prevent this distribution phenomenon of conductive bonding material.
As shown in Fig. 2 H to Fig. 2 K, for example, front surface metallization pattern may include discrete engagement pad 15,20 and of finger-shaped material Barrier 17, wherein each barrier 17 is around corresponding engagement pad 15 and serves as obstacle, to the shape between engagement pad and barrier At trench (moat).The uncured biography of engagement pad is flowed out or not reached when being assigned on solar cell from engagement pad The part 19 of the property led adhesive bond material 18 can be limited in by barrier 17 in trench.This prevents conductive adhesive from engaging material Material is further spread on peripheral part of battery from engagement pad.Barrier 17 can for example by with finger-shaped material 20 and engagement pad 15 (for example, silver) identical material is formed, and height may be, for example, about 10 microns to about 40 microns, and width may be, for example, about 30 Micron is to about 100 microns.The trench formed between barrier 17 and engagement pad 15 can be with for example, about 100 microns to about 2 millimeters Width.Have single barrier 17 can in other variations although the example of diagram only surrounds each preceding engagement pad 15 Such as it is concentrically disposed with two or more such barriers around each engagement pad.Front surface engagement pad and one surrounding Or multiple barriers can form the shape for example similar to " target center " target.As illustrated in figure 2h, for example, barrier 17 can be with finger-shaped material 20 interconnection, and can be interconnected with the thin conducting wire that engagement pad 15 interconnects.
Similarly, as shown in Fig. 2 L to Fig. 2 N, for example, after rear surface metallization pattern may include that (for example, silver) is discrete (for example, aluminium) contact 30 of engagement pad 25, substantially all residual areas of covering solar cell rear surface, and (example Such as, silver-colored) barrier 27, wherein each barrier 17 is around corresponding rear engagement pad 25 and serves as obstacle, in engagement pad and screen Trench is formed between barrier.As shown, trench can be filled in a part for contact 30.It flows out or is being assigned to from engagement pad 25 The multiple portions for not reaching the uncured conductive adhesive grafting material of engagement pad when on solar cell can be by barrier 27 It is limited in trench.This prevents conductive adhesive grafting material from further being spread on peripheral part of battery from engagement pad. The height of barrier 27 may be, for example, about 10 microns to about 40 microns, and width may be, for example, about 50 microns to about 500 microns.Screen The trench formed between barrier 27 and engagement pad 25 can be with for example, about 100 microns to about 2 millimeters of width.Although diagram is shown Example only has single barrier 27 around each rear surface engagement pad 25, but in other variations, can be for example around each Engagement pad is concentrically disposed with two or more such barriers.Rear surface engagement pad and surrounding one or more barriers can Form the shape for example similar to " target center " target.
The continuous bus or engagement pad for substantially extending the length of solar battery edge can also be prevented from conductive adhesion The barrier that agent grafting material is spread is surround.For example, Fig. 2 Q show this barrier 27 around rear surface bus 25.Front surface Bus (for example, bus 15 in Fig. 2A) can similarly be surround by barrier.It is similar, row's front surface engagement pad or rear table Face engagement pad can be used as entirety and be surround by this barrier, rather than divided barrier is surround respectively.
The feature of front surface metallization pattern or rear surface metallization pattern can be formed in parallel with the overlapping of solar cell Edge substantially extends the barrier of the length of solar cell, rather than as just describing around bus or one or Multiple engagement pads, bus or engagement pad are arranged between barrier and the edge of solar cell at this time.This barrier is as other Line conductor may serve a dual purpose (as described above).For example, in Fig. 2 R, bypass wire 40 provides barrier, which contributes to Prevent uncured conductive adhesive grafting material in engagement pad 15 from spreading to the effective coverage of solar cell front surface On.Similar arrangement can be used for rear surface metallization pattern.
Preventing the barrier that conductive adhesive grafting material is spread can be spaced apart with engagement pad or bus, and is formed and just retouched The trench stated, but this is not required.Alternatively, such barrier can abut engagement pad or bus, (for example) such as Fig. 2 O or Shown in Fig. 2 P.In such variations, barrier is preferably higher than engagement pad or bus, and uncured conductibility is glued Mixture grafting material is retained in engagement pad or bus.Although Fig. 2 O and Fig. 2 P are shown on front surface metallization pattern Multiple portions, but similar arrangement can also be used for rear surface metallization pattern.
Between the barrier and/or such barrier and engagement pad or bus that prevent the distribution of conductive adhesive grafting material Trench, and any conductive adhesive grafting material in such trench has been spread to, it all can be optionally located at solar-electricity On pool surface in the region Chong Die with the adjacent solar battery in superbattery, therefore invisible, and covered shield and unlikely It is exposed to solar radiation.
, using the substituted or supplemented of barrier, mask or any other suitable side can be used as as just description Method (for example, silk-screen printing) deposits conductive bonding material, realizes accurate deposition whereby, may during deposition to reduce Spread to the amount for the conductive bonding material for not reaching engagement pad except engagement pad or.
More generally, any suitable front surface metallization pattern and rear surface metallization can be used in solar cell 10 Pattern.
Fig. 4 A show a part for the front surface of exemplary rectangular superbattery 100, which includes such as Solar cell 10 shown in Fig. 2A, the stacking mode of these solar cells 10 as shown in Figure 1 are arranged.As a result of folded Lid geometry does not have physical clearance between pairs of solar cell 10.In addition, although it can be seen that superbattery 100 1 The bus 15 of solar cell 10 at end, but the bus (or front surface engagement pad) of other solar cells is hidden in phase The lower section of the lap of adjacent solar cell.Therefore, superbattery 100 is able to be used effectively in solar energy module and account for According to region.In particular, being arranged with the solar cell as usual with protruding portion and in solar cell by according to table The situation that the solar cell including many visible buses is arranged on face is compared, and a larger part can be used for generating in the region Electric power.Fig. 4 B to Fig. 4 C respectively illustrate the front view and rearview of another exemplary superbattery 100, superbattery 100 The main V word rectangle silicon solar cells for including chamfering, but it is similar with Fig. 4 A in other respects.
In the example shown in Fig. 4 A, bypass wire 40 is hidden by the lap of adjacent cell.Alternatively, including The solar cell of bypass wire 40 can be similar to be overlapped like that shown in Fig. 4 A, but not cover bypass wire.
Solar energy at 100 other end of front surface bus 15 and superbattery that the at one end of superbattery 100 exposes The rear surface of battery metallizes provides negative (terminal) terminal contacts and positive (terminal) terminal contacts, these ends for superbattery Contact can be used to superbattery 100 being electrically connected to other superbatteries, and/or as needed, by superbattery 100 It is electrically connected to other electrical components.
Adjacent solar battery in superbattery 100 can be overlapped any appropriate amount, for example, about 1mm to about 5mm.
As shown in Fig. 5 A to Fig. 5 G, for example, the stacking formula superbattery just described can effectively fill solar energy module Region.Such solar energy module can be for example square or rectangle.The rectangle solar energy mould as shown in Fig. 5 A to Fig. 5 G The length of block, short side can be (for example) about 1 meter, and the length of long side can be (for example) about 1.5 meters to about 2.0 meters.Or The shape and size that solar energy module selects any other suitable.It can be in solar energy module using any suitable of superbattery Suitable arrangement.
In the solar energy module of square or rectangle, superbattery is usually arranged to the short side with solar energy module Or the row that long side is parallel.Each row may comprise the one, two or more superbattery of end-to-end arrangement.It is formed this The superbattery 100 of a part for solar energy module may include the solar cell 10 of any suitable number, and with any suitable Suitable length.In some variations, 100 respective length of superbattery is approximately equal to these superbatteries and constitutes one The length of the short side of partial rectangle solar energy module.In other variations, 100 respective length of superbattery is approximate Equal to the half for the bond length that these superbatteries constitute part thereof of rectangle solar energy module.In other variations In, 100 respective length of superbattery is approximately equal to the length that these superbatteries constitute part thereof of rectangle solar energy module The length on side.In other variations, 100 respective length of superbattery is approximately equal to these superbatteries and constitutes one The half of the long side length of partial rectangle solar energy module.Make the solar cell needed for the superbattery of these length Quantity naturally depend on the overlapping of the size of solar energy module, the size of solar cell and adjacent solar battery Amount.Or the length that superbattery selects any other suitable.
It is super in the variations for the length that the length of superbattery 100 is approximately equal to rectangle solar energy module short side Battery may include 56 rectangle solar cells that such as size is about 19.5mm × about 156mm, wherein adjacent solar battery It is overlapped about 3mm.It can be partitioned into eight this rectangle sun from conventional square or dead square 156mm × 156mm chips It can battery.Alternatively, this superbattery may include 38 rectangle solar energy that such as size is about 26mm × about 156mm Battery, wherein adjacent solar battery are overlapped about 2mm.It can be from conventional square or dead square 156mm × 156mm chips In be partitioned into six this rectangle solar cells.It is approximately equal to rectangle solar energy module short side in the length of superbattery 100 In the variations of the half of length, superbattery may include 28 rectangles that such as size is about 19.5mm × about 156mm too Positive energy battery, wherein adjacent solar battery are overlapped about 3mm.Alternatively, this superbattery may include that such as size is about 19 rectangle solar cells of 26mm × about 156mm, wherein adjacent solar battery are overlapped about 2mm.
It is super in the variations for the length that the length of superbattery 100 is approximately equal to rectangle solar energy module long side Battery can be for example including 72 rectangle solar cells that size is about 26mm × about 156mm, wherein adjacent solar battery weight Folded about 2mm.In the variations for the half that the length of superbattery 100 is approximately equal to rectangle solar energy module long side length, Superbattery may include 36 rectangle solar cells that such as size is about 26mm × about 156mm, wherein adjacent solar-electricity Pond is overlapped about 2mm.
Fig. 5 A show the exemplary rectangular solar energy module 200 for including 20 rectangle superbatteries 100, wherein each The length of rectangle superbattery is approximately equal to the half of solar energy module bond length.The end-to-end pairs of arrangement of superbattery, And ten row's superbatteries are formed, wherein the row of superbattery and long side are parallel to the short side orientation of solar energy module.At other In variations, often arranges superbattery and may comprise three or more superbatteries.In addition, the solar energy mould of like configurations The number of rows for the superbattery that block includes is more or few than shown in the example.(for example, Figure 14 A are shown including 24 The solar energy module of rectangle superbattery, these superbatteries are arranged to 12 rows, often arrange two).
Superbattery in that, in each row be arranged such that wherein at least one superbattery with this row in another The adjacent one end of superbattery has in the variations of front surface terminal contacts, and gap 210 shown in Fig. 5 A contributes to edge The center line for solar energy module forms the front surface terminal contacts to superbattery 100 (for example, the bus or discrete of exposure Contact 15) electrical contact.For example, two superbatteries in a row may be arranged so that a superbattery have along The front surface terminal contact of the center line of solar energy module, and another superbattery has the center along solar energy module The rear surface terminal contact of line.When using this arrangement, two superbatteries in a row can be electrically connected in series by interconnection piece, The interconnection piece arranges along the center line of solar energy module, and is joined to the front surface terminal contact of a superbattery and another The rear surface terminal contact of one superbattery.(see, for example, Fig. 8 C being discussed below).Include three in every row's superbattery It may be present additional gap in the variations of a or more superbattery, between superbattery, and between these are additional Gap can similarly contribute to form the electrical contact of the front surface terminal contacts far from each side of solar energy module.
Fig. 5 B show the exemplary rectangular solar energy module 300 for including 10 rectangle superbatteries 100, wherein each The length of rectangle superbattery is approximately equal to the length of solar energy module short side.Superbattery is arranged to ten parallel rows, The short side that its long side is parallel to module is orientated.The solar energy module of like configurations may also comprise the superbattery of this length of side, but Its number of rows is more than number of rows shown in the example or few.
Fig. 5 B also show the solar energy module 200 of Fig. 5 A wherein respectively the adjacent superbattery in row's superbattery it Between it is very close to each other in the case of appearance.Such as by the way that superbattery is arranged so that two superbatteries in every row all There are back surface terminal contacts along the center line of module, so that it may eliminate the gap 210 of Fig. 5 A.In this case, because not The center line along module is needed to touch the front surface of superbattery, so superbattery can be arranged to almost against each other, Additional gap is had little or no therebetween.Alternatively, two superbatteries 100 in a row can be arranged to Make a superbattery along module on one side with front surface terminal contacts and along the center line of module with rear surface Terminal contacts, another superbattery is along the center line of module with front surface terminal contacts and along the relative edge of module With rear surface terminal contacts, and the adjacent end portion of the two superbatteries is overlapped.Flexible interconnection can be interposed in super Between the overlapped ends of battery, it is made not cover any part of solar energy module front surface, one is supplied to for that will be electrically connected The front surface terminal contacts of a superbattery and the rear surface terminal contacts of another superbattery.Just contain three or more For the row of a superbattery, both ways can be used cooperatively.
The row of superbattery and superbattery shown in Fig. 5 A to Fig. 5 B can be by being electrically connected in series times with electrical connection in parallel What proper combination interconnects, for example, following article combination Figure 10 A to Figure 15 are further described.Interconnection between superbattery can Such as it is realized using similar to the flexible interconnection below in conjunction with Fig. 5 C to Fig. 5 G and subsequent drawings description.Such as this explanation Many examples described in book are shown, the superbattery in solar energy module as described herein can be by being connected in series with and in parallel The combination of connection interconnects, to provide the output being substantially equal with the output voltage of conventional solar energy module to module Voltage.In such cases, come solar energy module described herein output current also can substantially with conventional solar energy module Output current it is equal.Alternatively, as described further below, the superbattery in solar energy module can interconnect, and The output voltage of output voltage apparent increase compared to conventional solar energy module is provided by solar energy module.
Fig. 5 C show the exemplary rectangular solar energy module 350 for including 6 rectangle superbatteries 100, wherein each square The length of shape superbattery is approximately equal to the length of solar energy module long side.Superbattery is arranged to six parallel rows, The long side that long side is parallel to module is orientated.The solar energy module of like configurations may also comprise the superbattery of this length of side, but its Number of rows is more than number of rows shown in the example or few.Each superbattery in the example (and several following examples) wraps 72 rectangle solar cells are included, the width of each rectangle solar cell is approximately equal to 156mm × 156mm squares or accurate The 1/6 of the width of square wafers.Any other appropriate number of rectangle with any other suitable dimension can also be used too Positive energy battery.In this example, the front surface terminal contact of superbattery is electrically connected to each other by flexible interconnection 400, The edge of 400 one short side of proximity modules of flexible interconnection is arranged and is parallel to edge extension.The rear surface end of superbattery Sub- contact is similarly electrically connected to by flexible interconnection each other, these flexible interconnections are neighbouring behind in solar energy module The edge of another short side of module is arranged and is parallel to edge extension.Rear surface interconnection piece is invisible in figure 5 c.This Six superbattery parallel connections isometric with module are electrically connected by kind arrangement.The solar energy module constructs and other solar energy modules The details of flexible interconnection and its arrangement in construction is discussed in more detail hereinafter in conjunction with Fig. 6 to Fig. 8 G.
Fig. 5 D show the exemplary rectangular solar energy module 360 for including 12 rectangle superbatteries 100, wherein each The length of rectangle superbattery is approximately equal to the half of solar energy module long side length.The end-to-end pairs of arrangement of superbattery, And six row's superbatteries are formed, wherein the row of superbattery and long side are parallel to the long side orientation of solar energy module.At other In variations, often arranges superbattery and may comprise three or more superbatteries.In addition, the solar energy mould of like configurations The number of rows for the superbattery that block includes is more or few than shown in the example.In the example (and several following examples) Each superbattery includes 36 rectangle solar cells, the width of each rectangle solar cell be approximately equal to 156mm × The 1/6 of 156mm squares or the width of pseudo-square wafers.It can also be used any other appropriate number of with any other The rectangle solar cell of suitable dimension.Gap 410 helps to be formed to superbattery along the center line of solar energy module The electrical contact of 100 front surface terminal contacts.In this example, the edge of one short side of proximity modules is arranged and is parallel to this The front surface terminal contact of six superbatteries is electrically interconnected the flexible interconnection 400 that edge extends.Similarly, it is carried on the back in module Afterwards the edge of another short side of proximity modules be arranged and be parallel to the edge extension flexible interconnection it is super by other six The rear surface terminal contact of battery is electrically connected.The flexible interconnection (this is not shown in figure) being arranged along gap 410 will be in a row Each pair of superbattery interconnected in series, and be optionally laterally extended, by adjacent row's interconnected in parallel.This arrangement surpasses six rows Grade cell parallel electrical connection.Optionally, in first group of superbattery, first superbattery in often arranging often is arranged with other In first superbattery parallel connection electrical connection；In second group of superbattery, often arrange in second superbattery and other Second superbattery parallel connection electrical connection in often arranging, and this two groups of superbatteries are electrically connected in series.It is arranged using latter When, each superbattery in this two groups of superbatteries is able in parallel with bypass diode.
Details A in Fig. 5 D identifies the position of viewgraph of cross-section shown in Fig. 8 A, at this location, superbattery Rear surface terminal contact is connected with each other along the edge of one short side of module.Details B similarly identifies transversal shown in Fig. 8 B The position of face view, at this location, the front surface terminal contact of superbattery are mutual along the edge of another short side of module Connection.Details C identifies the position of viewgraph of cross-section shown in Fig. 8 C, and at this location, the superbattery in a row is along gap 410 interconnected in series.
Fig. 5 E show the exemplary rectangular solar energy module 370 for being configured similarly to Fig. 5 C, but in this example, shape All solar cells at superbattery are all the V word solar cells for having chamfering, the chamfering and are partitioned into too from it The turning of the pseudo-square wafers of positive energy battery corresponds to.
Fig. 5 F show another exemplary rectangular solar energy module 380 for being configured similarly to Fig. 5 C, but in the example In, the solar cell for forming superbattery includes the mixture of V words solar cell and rectangle solar cell, these are too Positive energy battery is arranged to reproduction and is partitioned into the shape of the pseudo-square wafers of these solar cells from it.In showing for Fig. 5 F In example, V word solar cells are wide than rectangle solar cell on the direction perpendicular to its long axis, lacked with compensating V word batteries The turning of mistake so that during module works, V words solar cell and rectangle solar cell are exposed to having for solar radiation Area equation is imitated, so make both batteries that there is matched electric current.
Fig. 5 G, which are shown, is configured similarly to another exemplary rectangular of Fig. 5 E (that is, only including V words solar cell) too Positive energy module, but in the solar energy module of Fig. 5 G, the adjacent V words solar cell in superbattery is arranged to each other Mirror image, so they be overlapped edge length it is equal.This arrangement maximizes the length of each overlapping j oint, thus has Superbattery is flowed through conducive to hot-fluid.
Other constructions of rectangle solar energy module may include the row only formed by rectangle (non-chamfering) solar cell or Multiple rows of superbattery, and a row or multi-row superbattery that is only formed by chamfering solar cell.For example, rectangle solar energy Module can be similar to Fig. 5 C and construct like that, and only two rows of superbatteries of outside are respectively by only by chamfering solar cell shape At row's superbattery substitute.Chamfering solar cell in these rows can for example be arranged to mirror image pair, such as Fig. 5 G institutes Show.
In the exemplary solar energy module shown in Fig. 5 C to Fig. 5 G, the electric current along every row's superbattery is about area The 1/6 of electric current in equal conventional solar energy module, the reason is that forming the effective area of the rectangle solar cell of superbattery About the 1/6 of stock size solar cell effective area.However, due to six row superbatteries electricity in parallel in these examples Connection, so the total current that illustrative solar energy module generates can be equal to the identical conventional solar energy module of area and be generated Total current.This helps to be replaced with the exemplary solar energy module (and other examples described below) of Fig. 5 C to Fig. 5 G Generation conventional solar energy module.
Fig. 6 illustrates in greater detail showing for the three row's superbatteries interconnected with flexible electrical interconnection compared to Fig. 5 C to Fig. 5 G Example property arrangement, this arrangement are used to each row being connected in parallel to each other for the superbattery in every row to be one another in series.These rows It may, for example, be three rows in the solar energy module of Fig. 5 D.In the example of fig. 6, there are one flexible for each superbattery 100 Interconnection piece 400 is conductively joined to its front surface terminal contact, and has another flexible interconnection to be conductively joined to it Rear surface terminal contact.Two superbatteries in often arranging are electrically connected in series by shared flexible interconnection, this is shared soft Property interconnection piece is conductively joined to the front surface terminal contact of a superbattery and the rear surface end of another superbattery Sub- contact.Each flexible interconnection is arranged adjacent to one end of its superbattery engaged and is parallel to the extension of this one end, and And can extend transverse to will conductively be joined in adjacent row the flexible interconnection on superbattery superbattery it Outside, to which adjacent row parallel connection to be electrically connected.Dotted line in Fig. 6 depicts the covering part by superbattery in flexible interconnection Divide masking and is covered and sightless portion by the covering part of flexible interconnection in sightless part or superbattery Point.
Flexible interconnection 400 can by (for example) as described above be used for engage be overlapped solar cell mechanical plasticity Conductive bonding material is conductively joined to superbattery.Optionally, conductive bonding material can be only positioned at along superbattery side Multiple discrete positions of edge, the continuous lines without forming the length for substantially extending superbattery edge, it is intended to reduce or reconcile On the direction for being parallel to superbattery edge, because of the coefficient of thermal expansion and superbattery of conductive bonding material or interconnection piece Stress caused by coefficient of thermal expansion mismatch.
Flexible interconnection 400 can (for example) be formed by scale copper or including scale copper.Flexible interconnection 400 is optionally Be patterned or otherwise construct, with increase its in the edge-perpendicular of superbattery and the two parallel directions Mechanical plasticity (flexibility), to reduce or reconcile in the edge-perpendicular of superbattery and parallel direction because of interconnection piece CTE and superbattery CTE mismatch caused by stress.It is this patterning may include (for example) formed slit, slit or Hole.The thickness of the conductive portion of interconnection piece 400 can for example, less than about 100 microns, be less than about 50 microns, be less than about 30 microns Or it is less than about 25 microns, to increase the flexibility of interconnection piece.Flexible interconnection and its mechanical plasticity with the engagement of superbattery Be sufficiently large so that the superbattery of interconnection in lamination process (below in conjunction with manufacture stacking formula solar cell module Method is more fully described) it can be remained intact under the stress because of caused by CTE mismatch, and at about -40 DEG C to about 85 DEG C It can be remained intact under the stress because of caused by CTE mismatch during temperature cycling test in range.
Preferably, flexible interconnection 400 is shown pair on the direction of end for being parallel to the superbattery that it is engaged The resistance of electric current, the resistance less than or equal to about 0.015 ohm, less than or equal to about 0.012 ohm, or be less than or equal to About 0.01 ohm.
Fig. 7 A show the several representative configuration for being applicable to flexible interconnection 400, use reference label 400A respectively It is marked to 400T.
Such as (e.g.) shown in the viewgraph of cross-section of Fig. 8 A to Fig. 8 C, solar energy module described in this specification usually has Have a laminate structures, wherein superbattery and one or more encapsulating materials 4101 be sandwiched in transparent front plate 420 and back plate 430 it Between.Transparent front plate can be (for example) glass.Optionally, back plate can also be transparent, this makes the two sides of solar energy module all It can work.Back plate can be (for example) polymer sheet.Have again alternatively, solar energy module can be existing glass front plate The double-sided glass module of back glass.
The viewgraph of cross-section (the details A of Fig. 5 D) of Fig. 8 A shows the example of flexible interconnection 400, flexible interconnection 400 It is conductively joined to the rear surface terminal contact of superbattery in the adjacent edges of solar energy module, and in superbattery Lower section extends internally, thus invisible from the front of solar energy module.Additional encapsulant item may be provided at interconnection piece 400 with Between the rear surface of superbattery, as shown in the figure.
The viewgraph of cross-section (the details B of Fig. 5 B) of Fig. 8 B shows the front surface end for being conductively joined to superbattery The example of the flexible interconnection 400 of sub- contact.
The viewgraph of cross-section (the details C of Fig. 5 B) of Fig. 8 C shows the example of shared flexible interconnection 400, shared After flexible interconnection 400 is conductively joined to the front surface terminal contact and another superbattery of a superbattery Surface terminal contact, to be electrically connected in series the two superbatteries.
Being electrically connected to the flexible interconnection of the front surface terminal contact of superbattery can be constructed or be arranged to only in the sun Being occupied in the front surface of energy module can be for example positioned at the relatively narrow width of solar energy module adjacent edges.By this in module front surface Width of the region that class interconnection piece occupies on the direction perpendicular to superbattery edge may be relatively narrow, e.g., less than or equal to About 10mm, less than or equal to about 5mm, or less than or equal to about 3mm.In being arranged shown in such as Fig. 8 B, flexible interconnection 400, which can be configured to it, extends to of length no more than this distance except superbattery end.Fig. 8 D to Fig. 8 G are shown Flexible interconnection is electrically connected to the additional example of the arrangement of the front surface terminal contact of superbattery, these arrangements can only exist Relatively narrow width is occupied in the front surface of module.Such arrangement helps to effectively utilize the front surface area of module to generate electricity Power.
Fig. 8 D show the front surface terminal contact for being conductively joined to superbattery, and on the side of superbattery The flexible interconnection 400 at superbattery rear portion is folded into around edge.The insulating film that can be coated in advance in flexible interconnection 400 435 may be provided between flexible interconnection 400 and the rear surface of superbattery.
Fig. 8 E show the flexible interconnection 400 including thin narrowband 440, wherein thin narrowband 440 not only conductively engages To the front surface terminal contact of superbattery, it is also conductively joined to the thin width in the rear surface extension behind of superbattery Band 445.The insulating film 435 that can be coated on thin broadband 445 in advance may be provided at the rear surface of thin broadband 445 and superbattery Between.
Fig. 8 F show the front surface terminal contact for being joined to superbattery, and mutual at the flexibility of flatwise coil by crimped Even part 400, the flexible interconnection 400 only occupy relatively narrow width in the front surface of solar energy module.
Flexible interconnection 400 shown in Fig. 8 G includes conductively being joined to the front surface terminal contact of superbattery Strip part, and part that cross section near superbattery is thicker.
In Fig. 8 A to Fig. 8 G, flexible interconnection 400 all can be such as (e.g.) shown in Fig. 6, along the complete of superbattery edge It is long to extend (for example, extending into the drawing page).
Optionally, it can be covered originally from the visible part in the front of module by dark film or coating in flexible interconnection 400 Lid, or otherwise dye, to mitigate between the interconnection piece and superbattery that are perceived by the normal observer of colour vision Visual contrast.For example, in Fig. 8 C, optional dark film or coating 425 cover on interconnection piece 400 originally before module The visible part in side.Visible part can be similarly covered or dye originally in interconnection piece 400 shown in other accompanying drawings.
Conventional solar energy module generally includes three or more bypass diodes, wherein each bypass diode with One group of 18 to 24 silicon solar cell being connected in series with are connected in parallel.It may be in reverse-biased solar energy this is done to limit The amount for the electric power being dissipated as heat in battery.Due to solar cell existing defects, front surface it is dirty or by uneven Irradiation reduces its and transmits the ability of electric current generated in battery strings, thus solar cell be likely to become it is reverse-biased.It is reverse-biased too The heat generated in positive energy battery depends on the voltage at solar cell both ends and flows through the electric current of solar cell.If anti- The voltage at inclined solar cell both ends is more than the breakdown voltage of solar cell, then the heat to dissipate in battery will be equal to breakdown Voltage is multiplied by the total current generated in battery strings.The silicon solar cell usually breakdown voltage with 16 to 30 volts.Due to each Silicon solar cell generates about 0.64 volt of voltage at work, so the battery strings that 24 or more solar cells are constituted can The voltage more than breakdown voltage is generated at reverse-biased solar cell both ends.
It is separated from one another in solar cell and by welding interconnection conventional solar energy module in, heat is not easy to be transmitted Solar cell far from fever.Therefore, the electric power that solar cell dissipates under breakdown voltage may be in solar cell Perhaps, middle generation hot spot can also cause fire so as to cause apparent thermal damage.So in conventional solar energy module, often 18 to 24 solar cells being connected in series with of group just need a bypass diode, to ensure not having any one in battery strings A solar cell can be by reverse-biased more than breakdown voltage.
It has been found by the applicant that heat is transmitted readily along silicon superbattery by between adjacent overlapping silicon solar cell The relatively thin not only conductive but also engagement of heat conduction.In addition, the electric current for flowing through the superbattery in solar energy module as described herein is usual Less than the electric current for flowing through a string of conventional solar cells, the reason is that superbattery as described herein usually by stacking formula rectangle too Positive energy battery is formed, wherein the effective area of each rectangle solar cell is both less than the effective area of conventional solar cell (for example, for the 1/6 of the latter).In addition, the rectangular aspect ratio of usually used solar cell makes adjacent solar-electricity herein There is the thermal contact area of stretching, extension between pond.Therefore, the reverse-biased solar cell for breakdown voltage only dissipates less heat, and And heat is easy to spread across superbattery and solar energy module, without forming dangerous hot spot.Applicant accordingly recognize that, Two pole of bypass of the much less than usually thinking to need can be used in the solar energy module formed as described herein by superbattery Pipe.
For example, in some variations of solar energy module as described herein, the solar cell for including can be used Number N be more than 25, greater than or equal to about 30, greater than or equal to about 50, greater than or equal to about 70 or greater than or equal to about 100 Superbattery does not have single solar cell or groups of solar cell of the sum less than N and bypass wherein in superbattery Diode individually electrical connection in parallel.Optionally, the complete superbattery of these length can electricity in parallel with single bypass diode Connection.It is optionally possible to use the superbattery of these length in the case of no bypass diode.
Several additional and optional design feature can make the solar energy module for using superbattery as described herein It is more tolerant of the heat to dissipate in reverse-biased solar cell.Referring again to Fig. 8 A to Fig. 8 C, encapsulant 4101 can be or can wrap Containing thermoplastic olefin (TPO) polymer, TPO encapsulants are better than the stability of light, heat the ethylene-vinyl acetate of standard (EVA) encapsulant.EVA will become brown once being heated or being irradiated by ultraviolet light, and cause current limliting battery to generate hot spot and ask Topic.Using TPO encapsulants, these problems are able to mitigate or avoid completely.In addition, solar energy module can have double-sided glass knot Structure, wherein transparent front plate 420 and back plate 430 are all glass.This double-sided glass structure makes solar energy module than typical polymerization It also being capable of trouble free service at the higher temperature of temperature of object back plate tolerance.In addition, can solar energy module be mounted on terminal box On one or more edges, rather than solar energy module is behind, if behind mounted on solar energy module, terminal box can be Above module, additional thermal insulation layer is added for the solar cell in module.
Fig. 9 A show the exemplary rectangular solar energy for including six stacking formula rectangle superbatteries for being arranged to six rows Module, wherein often arranging the length for all extending solar energy module long side.This six superbatteries are connected in parallel to each other electrical connection, and with set Set the bypass diode parallel connection electrical connection in the terminal box 490 in solar energy module rear surface.Superbattery and two poles of bypass Electrical connection between pipe is made into the welding 450 across embedded module laminate structures.
Fig. 9 B show another exemplary rectangular for including six stacking formula rectangle superbatteries for being arranged to six rows Solar energy module, wherein often arranging the length for all extending solar energy module long side.These superbatteries are connected in parallel to each other electrical connection.Point From plus end terminal box 490P and negative terminal terminal box 490N be arranged in solar energy module in the rear surface of solar energy module Opposite end.Superbattery connects by the external cable 455 extended between the two terminal boxes with being located in one of Bypass diode parallel connection electrical connection in wire box.
Fig. 9 C to Fig. 9 D include the exemplary double-sided glass square for being arranged to six stacking formula rectangle superbatteries of six rows Shape solar energy module, wherein it is long often to arrange the extension solar energy module all in the laminate structures including glass front plate and back glass The length on side.These superbatteries are connected in parallel to each other electrical connection.The plus end terminal box 490P and negative terminal terminal box 490N of separation In the opposite edges of solar energy module.
Stacking formula superbattery is used in module placement, is that module level electric power controller is installed (for example, DC/AC is micro- Inverter, DC/DC modular powers optimizer, voltage intelligent switch and relevant apparatus) provide unique chance.Module level The key feature of power management system is can to optimize power.The superbattery for being such as described herein and using can be generated than traditional face The higher voltage of plate.In addition, superbattery module placement can also be by module subregion.Voltage increases, subregion increases, these are all Optimize the potential benefit of power.
Fig. 9 E show a kind of exemplary architecture that module level power management is carried out using stacking formula superbattery.Herein In figure, exemplary rectangular solar energy module includes six stacking formula rectangle superbatteries for being arranged to six rows, wherein often arranging all Extend the length of solar energy module long side.Three pairs of superbatteries are separately connected to power management system 460, be then able to compared with The discretely power of optimization module.
Fig. 9 F show another exemplary architecture that module level power management is carried out using stacking formula superbattery. In this figure, exemplary rectangular solar energy module includes six stacking formula rectangle superbatteries for being arranged to six rows, wherein often arranging All extend the length of solar energy module long side.Six superbatteries are separately connected to power management system 460, are then able to The more discretely power of optimization module.
Fig. 9 G show another exemplary architecture that module level power management is carried out using stacking formula superbattery. In this figure, exemplary rectangular solar energy module includes six or more stacking formula rectangles for being arranged to six rows or more row Superbattery 998, wherein three pairs or more are separately connected to bypass diode or power management system 460 to superbattery, It is then able to the power of more discretely optimization module.
Fig. 9 H show another exemplary architecture that module level power management is carried out using stacking formula superbattery. In this figure, exemplary rectangular solar energy module includes six or more stacking formula rectangles for being arranged to six rows or more row Superbattery 998, wherein each two superbattery are connected in series with, and all superbatteries are to being connected in parallel.Bypass diode or work( Rate management system 460 is parallel-connected to all superbatteries pair, to allow the power of optimization module.
In some variations, due to execution module grade power management, allow to save side all on solar energy module Road diode, while also eliminating the risk for hot spot occur.This is realized by integrating voltage on module level intelligently.By The voltage output for monitoring the solar cell circuit (for example, one or more superbatteries) in solar energy module, " is intelligently opened Pass " electric power controller just can determine whether the circuit includes any number of reverse-biased solar cell.If detecting the presence of Reverse-biased solar cell, then electric power controller (for example) relay switch or other component just can be used, by corresponding electricity Road is disconnected from electric system.For example, if the voltage of the solar cell circuit of monitoring drops to predetermined threshold (VLimit) hereinafter, Electric power controller will just cut off the circuit (making its open circuit), while ensure that module or module string keep connection.
In certain embodiments, if the voltage of circuit is decrease beyond compared to other circuits in same solar array Certain percentage or amplitude (for example, 20% or 10V), which will be cut off.Since intermodule communicates, so electric Sub- device will detect this variation.
The specific implementation of this voltage intelligence can be integrated into existing module level power management solution (for example, Enphase Energy Co., Ltds, Solaredge Technologies Co., Ltds, Tigo Energy Co., Ltds carry The solution gone out) or customization circuit design.
It illustrates how to calculate threshold voltage VLimitAn example be：
CellVoc@Low Irr&High Temp×Nnumber of cells in series–VrbReverse breakdown voltage≤VLimit,
Wherein：
·CellVoc@Low Irr&High TempOpen-circuit voltage (the minimum expection work of=battery to work under Low emissivity and high temperature Make Voc)；
·Nnumber of cells in seriesThe quantity for the battery being connected in series with in=monitored each superbattery；
·VrbReverse breakdown voltage=transmit electric current by the bucking voltage needed for battery.
This method that module level power management is carried out using intelligent switch allows (for example) more than the 100 silicon sun Energy battery is connected in series in individual module, the reliability without influencing safety and module.In addition, this intelligent switch is available To limit the string voltage into central inverter.Therefore longer module string can be installed, without worrying peace related to voltage Full problem or licence limit.If string voltage rises to limit value, the most weak module of electric current can be bypassed and (turned off).
Figure 10 A, Figure 11 A, Figure 12 A, Figure 13 A, Figure 13 B and Figure 14 B being described below are using stacking formula superbattery Solar energy module provide additional exemplary circuit schematic diagram.Figure 10 B-1, Figure 10 B-2, Figure 11 B-1, Figure 11 B-2, figure 11C-1, Figure 11 C-2, Figure 12 B-1, Figure 12 B-2, Figure 12 C-1, Figure 12 C-2, Figure 12 C-3, Figure 13 C-1, Figure 13 C-2, Figure 14 C- 1 and Figure 14 C-2 provide example physical layout corresponding with these circuit diagrams.When describing physical layout, it is assumed that The front surface terminal contacts of each superbattery have negative polarity, and the rear surface terminal contacts of each superbattery have Positive polarity.After if the superbattery that in contrast, module uses has the front surface terminal contacts and negative polarity of positive polarity Face extremities contact, then by it is positive and negative exchange and the orientation of bypass diode is overturned, so that it may change hereafter to the opinion of physical layout It states.Some in the various buses referred in the description of these attached drawings can be formed for example by above-mentioned interconnection piece 400.These are attached Other buses described in figure can for example be implemented with the welding of the laminate structures of embedded solar energy module or with external cable.
Figure 10 A show that the exemplary circuit schematic diagram of solar energy module as shown in Figure 5 B, wherein solar energy module include The length of 10 rectangle superbatteries 100, each rectangle superbattery 100 is approximately equal to the length of solar energy module short side. Superbattery is disposed in solar energy module, and the short side that long side is parallel to module is orientated.All superbatteries all with bypass The electrical connection in parallel of diode 480.
Figure 10 B-1 and Figure 10 B-2 show the example physical layout of the solar energy module of Figure 10 A.Bus 485N will surpass Negative (front surface) terminal contacts of grade battery 100 are connected to the bypass diode in the terminal box 490 in module rear surface 480 plus end.Positive (rear surface) terminal contacts of superbattery 100 are connected to the negative of bypass diode 480 by bus 485P Terminal.Bus 485P can be fully located at superbattery behind.The interconnection of bus 485N and/or bus 485N and superbattery accounts for According to the part in module front surface.
Figure 11 A show that the exemplary circuit schematic diagram of solar energy module as shown in Figure 5A, wherein solar energy module include The length of 20 rectangle superbatteries 100, each rectangle superbattery 100 is approximately equal to solar energy module bond length Half, and the end-to-end pairs of arrangement of these superbatteries, and form ten row's superbatteries.First super electricity in often arranging Pond is connected in parallel with first superbattery in other rows, and is connected in parallel with bypass diode 500.Second in often arranging A superbattery is connected in parallel with second superbattery in other rows, and is connected in parallel with bypass diode 510.Two groups Superbattery is connected in series with, and two bypass diodes are also connected in series with.
Figure 11 B-1 and Figure 11 B-2 show the example physical layout of the solar energy module of Figure 11 A.In this set-up, First superbattery in often arranging has along front surface (negative) terminal contacts on the first side of module and along module centers line Rear surface (just) terminal contacts, and often arrange in second superbattery have along module centers line front surface (negative) terminal contacts and along in module with first rear surface (just) terminal contacts at opposite second.Bus 515N will Front surface (negative) terminal contacts of first superbattery are connected to the plus end of bypass diode 500 in often arranging.Bus Rear surface (just) terminal contacts of second superbattery in every row are connected to the negative terminal of bypass diode 510 by 515P.Always The preceding table of second superbattery during line 520 is arranged by rear surface (just) terminal contacts of first superbattery in every row and often Face (negative) terminal contacts are connected to the plus end of the negative terminal and bypass diode 510 of bypass diode 500.
Bus 515P can be fully located at superbattery behind.The interconnection of bus 515N and/or bus 515N and superbattery Occupy the part in module front surface.Bus 520 can occupy the part in module front surface, so need such as Fig. 5 A institutes The gap 210 shown.Alternatively, bus 520 can be fully located at superbattery behind, and by the overlapping for being clipped in superbattery Hiding interconnection piece between end and be electrically connected to superbattery.In this case, it is only necessary to the gap 210 of very little, or Completely without gap.
Figure 11 C-1, Figure 11 C-2 and Figure 11 C-3 show another exemplary physical cloth of the solar energy module of Figure 11 A Office.In this set-up, often arrange in first superbattery have along the first side of module front surface (negative) terminal contacts with Along rear surface (just) terminal contacts of module centers line, and often second superbattery in row has along in module It rear surface (just) terminal contacts of heart line and is touched with first front surface (negative) end at opposite second along in module Point.Front surface (negative) terminal contacts of first superbattery in every row are connected to bypass diode 500 by bus 525N Plus end.Front surface (negative) terminal contacts of second battery in every row are connected to the negative of bypass diode 500 by bus 530N The plus end of terminal and bypass diode 510.Bus 535P connects rear surface (just) terminal contacts of first battery in every row It is connected to the plus end of the negative terminal and bypass diode 510 of bypass diode 500.Second battery during bus 540P will be arranged often Rear surface (just) terminal contacts be connected to the negative terminal of bypass diode 510.
Bus 535P and bus 540P can be fully located at superbattery behind.Bus 525N and bus 530N and/or this two The interconnection of bus and superbattery occupies the part in module front surface.
Figure 12 A show another exemplary circuit schematic diagram of solar energy module as shown in Figure 5A, wherein solar energy mould Block includes 20 rectangle superbatteries 100, and the length of each rectangle superbattery 100 is approximately equal to solar energy module short side The half of length, and the end-to-end pairs of arrangement of these superbatteries, and form ten row's superbatteries.It is electric shown in Figure 12 A Lu Zhong, superbattery are arranged to four groups：In the first set, first superbattery of upper five row is connected in parallel with each other, and with Bypass diode 545 is connected in parallel；In the second set, second superbattery of upper five row is connected in parallel with each other, and with side Road diode 550 is connected in parallel；In third group, first superbattery of lower five rows is connected in parallel with each other, and with bypass two Pole pipe 560 is connected in parallel；In the 4th group, second superbattery of lower five rows is connected in parallel with each other, and and bypass diode 555 are connected in parallel.This four groups of superbatteries are serially connected.Four bypass diodes are also connected in series with.
Figure 12 B-1 and Figure 12 B-2 show the example physical layout of the solar energy module of Figure 12 A.In this set-up, First group of superbattery has along front surface (negative) terminal contacts on the first side of module and along the rear surface of module centers line (just) terminal contacts；Second group of superbattery has along front surface (negative) terminal contacts of module centers line and along module Upper rear surface (just) terminal contacts with first at opposite second；Third group superbattery has along the first side of module Rear surface (just) terminal contacts and front surface (negative) terminal contacts along module centers line；4th group of superbattery has Rear surface (just) terminal contacts along module centers line and front surface (negative) terminal contacts along the second side of module.
Front surface (negative) terminal contacts of superbattery in first group of superbattery are connected to each other by bus 565N, also These terminal contacts are connected to the plus end of bypass diode 545.Bus 570 is by the super electricity in first group of superbattery Rear surface (just) terminal contacts in pond and front surface (negative) terminal contacts of the superbattery in second group of superbattery connect each other It connects, these terminal contacts is also connected to the plus end of the negative terminal and bypass diode 550 of bypass diode 545.Bus 575 will be super in rear surface (just) terminal contacts of the superbattery in second group of superbattery and the 4th group of superbattery Front surface (negative) terminal contacts of battery are connected to each other, these terminal contacts are also connected to the negative terminal of bypass diode 550 With the plus end of bypass diode 555.Bus 580 is by rear surface (just) end of the superbattery in the 4th group of superbattery Front surface (negative) terminal contacts of contact and the superbattery in third group superbattery are connected to each other, and also touch these ends Point is connected to the plus end of the negative terminal and bypass diode 560 of bypass diode 555.Bus 585P is by the super electricity of third group Rear surface (just) terminal contacts of superbattery in pond are connected to each other, these terminal contacts are also connected to bypass diode 560 negative terminal.
The part and bus 585P that the superbattery in second group of superbattery is connected in bus 575 can complete positions Behind in superbattery.The interconnection of the remainder and bus 565N and/or the two and superbattery of bus 575 occupies mould A part in block front surface.
Bus 570 and bus 580 can occupy the part in module front surface, so need gap as shown in Figure 5A 210.Alternatively, this two buses can be fully located at superbattery behind, and by be clipped in superbattery overlapped ends it Between hiding interconnection piece and be electrically connected to superbattery.In this case, it is only necessary to the gap 210 of very little, or completely not Need gap.
Figure 12 C-1, Figure 12 C-2 and Figure 12 C-3 show the alternate physical layout of the solar energy module of Figure 12 A.The layout Come single terminal box 490 shown in alternate figures 12B-1 and Figure 12 B-2, but its other party using two terminal boxes 490A and 490B Face is identical as Figure 12 B-1 and Figure 12 B-2.
Figure 13 A show another exemplary circuit schematic diagram of solar energy module as shown in Figure 5A, wherein solar energy mould Block includes 20 rectangle superbatteries 100, and the length of each rectangle superbattery 100 is approximately equal to solar energy module short side The half of length, and the end-to-end pairs of arrangement of these superbatteries, and form ten row's superbatteries.It is electric shown in Figure 13 A Lu Zhong, superbattery are arranged to four groups：In the first set, first superbattery of upper five row is connected in parallel with each other； In two groups, second superbattery of upper five row is connected in parallel with each other；In third group, first superbattery of lower five rows It is connected in parallel with each other；In the 4th group, second superbattery of lower five rows is connected in parallel with each other.First group and second group that This is connected in series with, thus is connected in parallel with bypass diode 590.Third group and the 4th group are serially connected, thus with it is another A bypass diode 595 is connected in parallel.First, second group is connected in series with third, the 4th group, and two bypass diodes are also gone here and there Connection connection.
Figure 13 C-1 and Figure 13 C-2 show the example physical layout of the solar energy module of Figure 13 A.In this set-up, First group of superbattery has along front surface (negative) terminal contacts on the first side of module and along the rear surface of module centers line (just) terminal contacts；Second group of superbattery has along front surface (negative) terminal contacts of module centers line and along module Upper rear surface (just) terminal contacts with first at opposite second；Third group superbattery has along the first side of module Rear surface (just) terminal contacts and front surface (negative) terminal contacts along module centers line；4th group of superbattery has Rear surface (just) terminal contacts along module centers line and front surface (negative) terminal contacts along the second side of module.
Front surface (negative) terminal contacts of first group of superbattery are connected to each other by bus 600, also by these terminal contacts It is connected to rear surface (just) terminal contacts of third group superbattery, the plus end and bypass diode of bypass diode 590 595 negative terminal.Rear surface (just) terminal contacts of first group of superbattery are connected to each other by bus 605, also by these ends Front surface (negative) terminal contacts of contact portion to second group of superbattery.Bus 610P is by the rear table of second group of superbattery Face (just) terminal contacts are connected to each other, these terminal contacts are also connected to the negative terminal of bypass diode 590.Bus 615N Front surface (negative) terminal contacts of 4th group of superbattery are connected to each other, these terminal contacts are also connected to two poles of bypass The plus end of pipe 595.Front surface (negative) terminal contacts of third group superbattery are connected to each other by bus 620, also by these ends Terminal contacts are connected to rear surface (just) terminal contacts of the 4th group of superbattery.
The part and bus 610P that the superbattery in third group superbattery is connected in bus 600 can complete positions Behind in superbattery.The interconnection of the remainder and bus 615N and/or the two and superbattery of bus 600 occupies mould A part in block front surface.
Bus 605 and bus 620 occupy the part in module front surface, so need the gap as shown in Fig. 5 A 210.Alternatively, this two buses can be fully located at superbattery behind, and by be clipped in superbattery overlapped ends it Between hiding interconnection piece and be electrically connected to superbattery.In this case, it is only necessary to the gap 210 of very little, or completely not Need gap.
Figure 13 B show that the exemplary circuit schematic diagram of solar energy module as shown in Figure 5 B, wherein solar energy module include The length of 10 rectangle superbatteries 100, each rectangle superbattery 100 is approximately equal to the length of solar energy module short side. Superbattery is disposed in solar energy module, and the short side that long side is parallel to module is orientated.In the circuit shown in Figure 13 B, Superbattery is arranged to two groups：In the first set, upper five superbatteries are connected in parallel with each other, and with bypass diode 590 It is connected in parallel；In the second set, lower five superbatteries are connected in parallel with each other, and are connected in parallel with bypass diode 595.This Two groups of superbatteries are serially connected.Two bypass diodes are also connected in series with.
The difference of the circuit diagram and Figure 13 A of Figure 13 B is super instead of often arranging two in Figure 13 A with single superbattery Grade battery.Therefore, the physical layout of the solar energy module of Figure 13 B can be as shown in Figure 13 C-1, Figure 13 C-2 and Figure 13 C-3, but saves Bus 605 and bus 620 are gone.
Figure 14 A show the exemplary rectangular solar energy module 700 for including 24 rectangle superbatteries 100, wherein each The length of rectangle superbattery is approximately equal to the half of solar energy module bond length.The end-to-end pairs of arrangement of superbattery, And 12 row's superbatteries are formed, wherein the row of superbattery and long side are parallel to the short side orientation of solar energy module.
Figure 14 B show the exemplary circuit schematic diagram of solar energy module as shown in Figure 14 A.The circuit shown in Figure 14 B In, superbattery is arranged to three groups：In the first set, first superbattery of upper eight row is connected in parallel with each other, and with side Road diode 705 is connected in parallel；In the second set, the superbattery of lower four rows is connected in parallel with each other, and and bypass diode 710 are connected in parallel；In third group, second superbattery of upper eight row is connected in parallel with each other, and with bypass diode 715 It is connected in parallel.This three groups of superbatteries are connected in series with.Three bypass diodes are also connected in series with.
Figure 14 C-1 and Figure 14 C-2 show the example physical layout of the solar energy module of Figure 14 B.In this set-up, First group of superbattery has along front surface (negative) terminal contacts on the first side of module and along the rear surface of module centers line (just) terminal contacts.In second group of superbattery, first superbattery during lower four rows often arrange has along module first Rear surface (just) terminal contacts on side and front surface (negative) terminal contacts along module centers line, lower four rows often arrange in the Two superbatteries have along front surface (negative) terminal contacts of module centers line and along opposite with the first side in module Rear surface (just) terminal contacts on the second side.Third group superbattery has rear surface (just) end along module centers line Contact and rear surface (negative) terminal contacts along the second side of module.
Front surface (negative) terminal contacts of third group superbattery are connected to each other by bus 720N, also touch these ends Point is connected to the plus end of bypass diode 705.Bus 725 connects rear surface (just) terminal contacts of first group of superbattery It is connected to front surface (negative) terminal contacts of second group of superbattery, the negative terminal and bypass diode 710 of bypass diode 705 Plus end.Rear surface (just) terminal contacts of third group superbattery are connected to each other by bus 730P, also touch these ends Point is connected to the negative terminal of bypass diode 715.Bus 735 by front surface (negative) terminal contacts of third group superbattery that These terminal contacts, are also connected to rear surface (just) terminal contacts, the bypass diode of second group of superbattery by this connection The plus end of 710 negative terminal and bypass diode 715.
Part, bus 730P and the bus of the superbattery in first group of superbattery are connected in bus 725 The part for the superbattery being connected in 735 in second group of superbattery can be fully located at superbattery behind.Bus 725 Remainder, bus 735 remainder and bus 720N and/or this three and superbattery interconnection occupy module before A part on surface.
Bypass diode is contained in one or more terminal boxes in solar energy module rear surface by some above-mentioned examples It is interior.But this is not required.For example, some or all of bypass diode can be configured on the periphery of solar energy module Surrounding and superbattery are coplanar, may be disposed in the gap between superbattery, also may be disposed at superbattery behind. In such cases, bypass diode can (for example) be arranged on and wherein be packaged in the laminate structures of superbattery.Therefore, The position of bypass diode is dispersible, and bypass diode can take out from terminal box, this contribute to two detach Single terminal terminal box, which is replaced, not only to be included module plus end but also includes the center links box of module negative terminal, described two separation Single terminal terminal box can be for example in the rear surface of solar energy module near the outer edge of solar energy module.This method The electricity in the wiring between the current path and solar energy module in ribbon conductor in overall reduction solar energy module The length of flow path, this can not only reduce material cost, but also can increase modular power (due to reducing resistive power loss).
For example, with reference to Figure 15, for solar energy module shown in Fig. 5 B and the various electricity of the circuit diagram with Figure 10 A Bypass diode 480 and two single terminal wiring in superbattery laminate structures can be used in the physical layout of interconnection Box 490P, 490N.It, can cognitive map 15 well by Figure 15 with Figure 10 B-1 compared with Figure 10 B-2.It can similarly change above-mentioned Other module placements.
The rectangle solar cell for reducing (area reductions) using above-mentioned electric current, can be conducive to as rigid describe Bypass diode is used in laminate structures, the reason is that the solar cell that electric current reduces dissipates in positive bias bypass diode Power be smaller than use stock size solar cell in the case of the power that dissipates.Therefore, the sun of this specification description Energy mould bypass diode in the block needs the heat distributed may be fewer than regular situation, so can be from the wiring in module rear surface It is removed in box and moves into laminate structures.
Single solar energy module may include interconnection piece, other conducting wires and/or bypass diode, the bypass diode branch Two or more electricity configurations are held, for example, supporting two or more above-mentioned electricity configurations.In such cases, for operating The specific configuration of solar energy module can be selected for example using switch and/or wire jumper from two or more alternative solutions.No The superbattery of different number can be connected for same configuration and/or parallel connection, and provides voltage output and electric current by solar energy module The various combination of output.Therefore, this solar energy module can be configured to from two kinds in factory or erecting bed or It is selected in more kinds of different voltage and current combinations, for example, being configured with low voltage and high current in high voltage low current configuration Between selected.
Figure 16 shows the intelligent switch module level power management dress as described above being located between two solar energy modules Set 750 exemplary arrangement.
Referring now to Figure 17, the illustrative methods 800 for making such as solar energy module disclosed in this specification include The following steps.In step 810, by the solar cell of stock size (for example, 156mm × 156mm or 125mm × It 125mm) cuts and/or cuts, obtain relatively narrow rectangle solar cell " item ".(referring also to such as Fig. 3 A to Fig. 3 E, with And relevant description above).The solar cell item optionally tested, then according to its current-voltage performance by its Classification.Current-voltage Performance Match or the battery of approximate match are advantageously used in the same superbattery, or for same In the superbattery that one row is connected in series with.For example, it may be possible to advantageously, be gone here and there in a superbattery or in row's superbattery The battery of connection connection generates the electric current of matching or approximate match under same irradiation condition.
In step 815, the conduction being arranged in superbattery between the lap of adjacent solar cell is utilized Solar cell item, is assembled into superbattery by property adhesive bond material.Can for example by ink jet printing or silk-screen printing come Apply conductive adhesive grafting material.
In step 820, apply heat and pressure, make the conductive adhesive between the solar cell in superbattery Grafting material is cured or partially cured.In a kind of variations, each additional solar cell is added to superbattery Afterwards, first make between newly added solar cell and adjacent overlapping solar cell (being a part for superbattery) Conductive adhesive grafting material is cured or partially cured, then adds next solar cell to superbattery.In another kind In variations, more than two solar cells or whole sun in superbattery is arranged in overlap mode that can on demand first Energy battery, then conductive adhesive grafting material is made to be cured or partially cured.Optionally test the super electricity that the step obtains Then pond is classified according to its current-voltage performance.Current-voltage Performance Match or the superbattery of approximate match can have It is used in same row's superbattery sharply, or in the same solar energy module.For example, it may be possible to which advantageously, parallel connection is electrically connected The superbattery or each row's superbattery that connect generate the voltage of matching or approximate match under same irradiation condition.
In step 825, it is configured by required module and the superbattery being cured or partially cured is arranged in layered structure In and interconnected, which includes encapsulating material, it is transparent before (day side) plate and (optionally transparent) back plate.Point Layer structure may include that the first layer encapsulant being (for example) located in glass substrate, the interconnection being arranged into first layer encapsulant are super Grade battery (day side is downward), the second layer encapsulant on superbattery layer, and in second layer encapsulant after Plate.Any other suitable arrangement can also be used.
In lamination step 830, applies heat and pressure to layered structure, form cured laminate structures.
In a kind of variations of the method shown in Figure 17, the solar cell of stock size is divided into solar cell Then conductive adhesive grafting material is applied on each individual solar cell item by item.In a kind of substitute variants shape In formula, first conductive adhesive grafting material is applied on the solar cell of stock size, then solar cell is divided into Solar cell item.
In curing schedule 820, conductive adhesive grafting material can be fully cured, also can be only partially cured.If only It is partially cured, then conductive adhesive grafting material initially can it is partially cured in step 820 (cured degree be enough conveniently Mobile and interconnection superbattery), then just it is fully cured in subsequent lamination step 830.
In some variations, the superbattery 100 for being assembled as the intermediate products of method 800 includes multiple rectangles Solar cell 10, these rectangle solar cells 10 be arranged to as described above adjacent solar battery long side overlapping and It conductively engages, and interconnection piece is joined to terminal contact in the opposite two ends of superbattery.
Figure 30 A show that electrical interconnection is joined to its front surface terminal contact and the exemplary of rear surface terminal contact surpasses Grade battery.The terminal edge that electrical interconnection is parallel to superbattery extends, and extends transverse to except superbattery, to promote It is electrically interconnected with adjacent superbattery.
Figure 30 B show superbattery shown in two Figure 30 A of interconnected in parallel.In interconnection piece originally before module The visible part in side can be capped or dye (for example, intensification), to mitigate the interconnection piece perceived by the normal observer of colour vision Visual contrast between superbattery.In the example shown in Figure 30 A, one end (attached drawing of the interconnection piece 850 in superbattery Right side) be conductively joined to the front terminals contact of the first polarity (for example, -), another interconnection piece 850 is super The other end (left side of attached drawing) of battery is conductively joined to opposite polarity rear terminal contact.Interconnection piece 850 with it is upper It is similar to state other interconnection pieces, it can be (for example) by identical conductive adhesive grafting material used between solar cell It is conductively joined to superbattery, but this is not required.In the example shown in the series of figures, a part for each interconnection piece 850 exists Superbattery 100 is extended up to perpendicular to the side of the long axis (and being parallel to the long axis of solar cell 10) of superbattery Edge except.As shown in figure 30b, this allows that two or more superbatteries 100 are arranged side by side, and keeps one of them super The interconnection piece 850 of battery is overlapped and is conductively bonded on the correspondence interconnection piece 850 of adjacent superbattery, to by two Superbattery parallel connection is electrically interconnected.850 interconnected in series of such interconnection piece that several had just been described, can form module Bus.If for example, the full duration or overall length (for example, Fig. 5 B) of each superbattery extension of module, then this arrangement may It is very applicable.In addition, interconnection piece 850 can also be used to the terminal contact string of two adjacent superbatteries in row's superbattery Connection electrical connection.Similar to shown in Figure 30 B by the interconnection piece 850 in a row is Chong Die with the interconnection piece 850 in adjacent row and conductibility Ground engages, pairs of in a row or more long string of such interconnection superbattery can with interconnected in a similar manner in adjacent row Superbattery parallel connection is electrically connected.
Interconnection piece 850 can be for example punched from conductive plate, be then optionally patterned, with increase its with it is super Grade battery edge-perpendicular and the mechanical plasticity on the two parallel directions, to reduce or reconcile with superbattery In edge-perpendicular and parallel direction because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery stress.This pattern Change may include (for example) forming slit, slit or hole (not shown).Interconnection piece 850 and its one or more with superbattery The mechanical plasticity of engagement is sufficiently large, so that superbattery is connected in lamination process and (is described in more detail) It can be remained intact under the stress because of caused by CTE mismatch.Interconnection piece 850 can be as described above used to engage weight by (for example) The mechanical plasticity conductive bonding material of folded solar cell is joined to superbattery.Optionally, conductive bonding material can be only Positioned at multiple discrete positions along superbattery edge, the company without forming the length for substantially extending superbattery edge Continuous line, it is intended to reduce or reconcile on the direction for being parallel to superbattery edge, because the heat of conductive bonding material or interconnection piece is swollen Stress caused by the coefficient of thermal expansion mismatch of swollen coefficient and superbattery.
Interconnection piece 850 can (for example) be cut from scale copper, if superbattery 100 is more electric than standard silicon solar by area The small solar cell in pond is formed, thus operating current is less than conventional current, then interconnection piece 850 may be than conventional conductibility Interconnection piece is thin.For example, the copper sheet that interconnection piece 850 can be about 50 microns to about 300 microns by thickness is formed.Interconnection piece 850 can be sufficient It is enough thin and sufficiently flexible, to be similar to above-mentioned interconnection piece, the edge fold of the superbattery engaged around it to the edge Behind.
Figure 19 A to Figure 19 D show several exemplary arrangement, when being arranged using these, apply during method 800 Heat and pressure, so that it may make the solidification of conductive adhesive grafting material or the portion between solar cell adjacent in superbattery Divide solidification.Any other suitable arrangement can also be used.
In fig. 19 a, apply heat and local pressure, be cured or partially cured every time in a joint portion (overlapping region) Conductive adhesive grafting material 12.Superbattery can be supported by surface 1000, and can be for example with bar, pin or other machines Tool contacts mechanically to apply pressure from upper direction joint portion.Can for example with hot-air (or other hot gas), infrared lamp, Or local pressure is applied to the Mechanical Contact at joint portion by heating, apply heat to joint portion.
In fig. 19b, the arrangement of Figure 19 A is extended to simultaneously be applied to heat and local pressure more in superbattery The batch process at a joint portion.
In Figure 19 C, uncured superbattery is clipped in release liner 1015 and reusable thermoplastic sheet 1020 Between, and be arranged on the board 1010 supported by surface 1000.The thermoplastic material of thermoplastic sheet 1020 is chosen, can Melt in the case where superbattery is able to cured temperature.Release liner 1015 can be formed for example by glass fibre and PTFE, cured It is not reattached to superbattery after process.Preferably, release liner 1015 is swollen by the heat of coefficient of thermal expansion and solar cell Swollen coefficient (for example, CTE of silicon) matching or substantially matched material are formed.If this is because the CTE of release liner with The CTE differences of solar cell are too big, then solar cell and release liner can extend different amounts in the curing process, this Often superbattery is pulled apart along longitudinal direction at joint portion.Vacuum capsule 1005 is covered in the arrangement above.Such as pass through heating surface 1000 and board 1010, and uncured superbattery is heated from below, then between capsule 1005 and support surface 1000 It vacuumizes.Therefore, hydrostatic pressure is applied to superbattery by vacuum capsule 1005 by the thermoplastic sheet 1020 of thawing.
In Figure 19 D, uncured superbattery transports through baking oven 1035, baking oven 1035 by porous mobile band 1025 Superbattery is heated.Solar cell 10 is pulled to mobile band by the vacuum applied by the perforation in band, thus to electricity Joint portion between pond applies pressure.During superbattery passes through baking oven, the conductive adhesive in these joint portions Grafting material cures.Preferably, porous belts 1025 matched with the CTE (for example, CTE of silicon) of solar cell by CTE or essence Upper matched material is formed.This is because if the CTE of porous belts 1025 differs too big with the CTE of solar cell, then too Positive energy battery and porous belts can extend different amounts in baking oven 1035, this is often at joint portion along longitudinal direction by superbattery It pulls apart.
The step of method 800 of Figure 17 includes the steps that different solidification superbattery and lamination superbattery, thus produce The intermediate products of superbattery are given birth to.In contrast, method 900 shown in Figure 18 will cure the step of superbattery and lamination The step of superbattery, is combined.In step 910, by the solar cell of stock size (for example, 156mm × 156mm, Or 125mm × 125mm) cut and/or cut, obtain relatively narrow rectangle solar cell item.Optionally test obtains Solar cell item, then classified.
In step 915, is configured by required module and solar cell item is arranged in layered structure, the layering knot Structure includes encapsulating material, it is transparent before (day side) plate and back plate.Using adjacent solar cell is arranged in superbattery Solar cell item, is arranged to superbattery by the uncured conductive adhesive grafting material between lap.It (can example Conductive adhesive grafting material is such as applied by ink jet printing or silk-screen printing).Then interconnection piece is arranged, on demand Uncured superbattery is electrically interconnected for configuration.Layered structure may include the first layer encapsulation being (for example) located in glass substrate Agent, the interconnection superbattery (day side is downward) being arranged into first layer encapsulant, the second layer envelope on superbattery layer Fill agent, and the back plate in second layer encapsulant.Any other suitable arrangement can also be used.
In lamination step 920, apply heat and pressure to layered structure, so that the conductive adhesive in superbattery Grafting material cures, to form cured laminate structures.For interconnection piece to be engaged to the conductive adhesive to superbattery Grafting material can also cure in this step.
In a kind of variations of method 900, the solar cell of stock size is divided into solar cell item, so Conductive adhesive grafting material is applied on each individual solar cell item afterwards.In a kind of substitute variants form, First conductive adhesive grafting material is applied on the solar cell of stock size, then solar cell is divided into the sun It can cell strip.For example, the solar cell of multiple stock sizes can be placed on large form, then on solar cell points Solar cell is divided into solar cell item with conductive adhesive grafting material, while with large-scale jig.It obtains too It is positive can cell strip then can transportation of unitized load, and be arranged as described above by required module configuration.
As described above, in some variations of method 800 and method 900, first conductive adhesive grafting material It is applied on the solar cell of stock size, then solar cell is divided into solar cell item.By the sun of stock size When energy battery is divided and forms solar cell, conductive adhesive grafting material is uncured (that is, still " humidity "). In some of these variations, conductive adhesive grafting material is applied on the solar cell of stock size (example Such as, by ink jet printing or silk-screen printing), it is then carved and is painted on the solar cell using laser, line drawing limit is carved with these Determining solar cell will cut to form the position of solar cell item, then cut solar cell along quarter line drawing. In these variations, the distance between laser power and/or quarter line drawing and adhesive bond material may be selected, to keep away Exempting from the heat of laser generation is incidentally cured or partially cured conductive adhesive grafting material.In other variations, Carved and painted on the solar cell of stock size using laser, with these quarter line drawing limit solar cells will cut to The position for forming solar cell item, is then applied on solar cell conductive adhesive grafting material (for example, borrowing Help ink jet printing or silk-screen printing), then solar cell is cut along quarter line drawing.It formerly carves in the variations painted, it may Preferably during the step of completing to apply conductive adhesive grafting material, it incidentally will not cut or destroy what quarter painted Solar cell.
Referring again to Figure 20 A to Figure 20 C, Figure 20 A schematically show the side view of example devices 1050, this sets It is standby can be used to cut applied conductive adhesive grafting material paint solar cell at quarter.It (executes to carve and paints and apply conduction Property adhesive bond material the two steps sequencing may be different).In the device, conductive adhesive has been applied It grafting material and has carved the stock size solar cell 45 painted vacuum manifold 1070 is conveyed through by porous mobile band 1060 Bending part.When solar cell 45 passes through above the bending part of vacuum manifold, pass through the vacuum of the hole application in band The bottom surface of solar cell 45 is pulled into vacuum manifold, thus solar cell is made to be bent.Vacuum manifold bending may be selected Partial radius of curvature R, in order that when being bent solar cell 45 in this way, solar cell is cut along line drawing is carved. Benefit in this way is, it is not necessary to the top for having applied conductive adhesive grafting material of contact solar cell 45 Surface, so that it may cut solar cell 45.
If preferably starting to cut in the at one end (that is, edge for solar cell 45) for carving line drawing, Using the equipment 1050 of Figure 20 A, it is arranged to and vacuum manifold orientation into θ angle by will (for example) carve line drawing so that for every Line drawing is carved, one end more early reaches the bending part of vacuum manifold compared to the other end, so that it may realize this point.Such as Figure 20 B institutes Show, for example, can be orientated to solar cell, it carves line drawing and the direction of travel of porous belts is at an angle, while manifold being taken To at vertical with the direction of travel of porous belts.For another example, Figure 20 C show that battery is oriented to it and carves line drawing perpendicular to porous belts Direction of travel, while manifold be oriented to it is at an angle with the direction of travel of porous belts.
Any other suitable equipment can also be used cut applied conductive adhesive grafting material paint the sun at quarter Energy battery, and form the solar cell item for being coated with conductive adhesive grafting material in advance.This equipment can (for example) make With roller, to apply pressure to the top surface for having applied conductive adhesive grafting material of solar cell.In such situation Under, preferably roller only not yet applied on solar cell top surface conductive adhesive grafting material region it is inscribed Touch the top surface.
In some variations, solar energy module include be arranged in reflectivity back plate in other words in white it is plurality of rows of Superbattery, therefore do not absorbed by solar cell initially and then pass through a part of solar radiation of solar cell can be rear Plate is reflected back solar cell, to generate electric power.Gap across each row's superbattery may can see reflectivity Back plate, this can cause solar energy module to look like multiple rows of parallel bright line (for example, white line) to extend through its front surface.Example Such as, referring to Fig. 5 B, if superbattery 100 is disposed in white back plate, then extend between each row's superbattery 100 Parallel concealed wire may look like white line.Solar energy module is in some occasions in use, for example, in use, this on roof Phenomenon may cause unsightly.
Referring to Figure 21, to improve the aesthetic effect of solar energy module, some variations are used including dark fringe 1105 White back plate 1100, the location of these dark fringes correspond to will be arranged between each row's superbattery in back plate Gap.Striped 1105 is sufficiently wide so that after can't see through the gap between assembled mould each row's superbattery in the block White portion on plate.Which reduce by the vision pair between the normal observer of the colour vision superbattery perceived and back plate Than.So although obtained module includes white back plate, the appearance of front surface still can be similar to such as Fig. 5 A to Fig. 5 B The front surface appearance of shown module.Dark fringe 1105 can be formed (for example) with multistage dark strip, it is also possible to which any other is suitable Mode formed.
As previously mentioned, each battery in masking solar energy module may generate " hot spot ", wherein not shielded battery Power dissipates in shielded battery.The power of this dissipation generates local temperature peaks, may reduce the performance of module.
Serious consequence caused by order to utmostly mitigate these hot spots possibility, it is common practice to two poles of embedded bypass Pipe, the part as module.The maximum quantity of battery between bypass diode is set, the maximum temperature for limiting module, And prevent module by irreversible destruction.In the standard layout of silion cell, every 20 or 24 batteries are bypassed using one Diode, particular number are determined by the typical breakdown voltage of silion cell.In certain embodiments, breakdown voltage can be at about 10V To 50V.In certain embodiments, breakdown voltage can be about 10V, about 15V, about 20V, about 25V, about 30V or about 35V。
According to multiple embodiments, the solar cell item and the thin heat-conductive bonding agent that are cut into cover, and improve solar-electricity Thermo-contact between pond.Since thermo-contact enhances, so thermal diffusion degree is higher than traditional interconnection technique.It is every in conventional design A bypass diode can only at most act on 24 or less than 24 solar cells, in contrast, using this based on stacking Kind thermal diffusion design, each bypass diode can act on more long string of solar cell.According to multiple embodiments, due to Stacking promotes thermal diffusion, no longer needs so much bypass diode accordingly, this can provide one or more benefits.For example, Due to no longer needing to provide a large amount of bypass diodes, so the various module placement of solar cell string length can be formed.
According to multiple embodiments, thermal diffusion is realized by maintaining the physical engagement with adjacent cell with thermal bonding.This permits Perhaps enough heat is dissipated by joint portion.
In certain embodiments, the thickness at this joint portion maintains about 200 microns or smaller, and this joint portion Extend the length of solar cell with segmented version.According to embodiment, the thickness at this joint portion can be about 200 microns or more Small, about 150 microns or smaller, about 125 microns or smaller, about 100 microns or smaller, about 90 microns or smaller, about 80 microns or Smaller, about 70 microns or smaller, about 50 microns or smaller, or about 25 microns or smaller.
Accurately carrying out curing process to adhesive may be critically important, since it may ensure that reliable joint portion is maintained, Reduce its thickness simultaneously, to promote the thermal diffusion between engaging battery.
Allow that longer battery strings (for example, more than 24 batteries) are installed, makes the design of solar cell and module more Flexibly.For example, battery strings of some embodiments using the cutting solar cell assembled in a manner of covering.Such configuration Each module compares conventional modules, and available battery is significantly more.
It is the absence of heat diffusivity matter, then every 24 batteries just need a bypass diode.It is reduced in solar cell In the case of 1/6, each mould bypass diode number in the block will be 6 in conventional module (not cutting battery composition by 3) Times, add up 18 diodes.Therefore, thermal diffusion makes bypass diode number substantially reduce.
In addition, for each bypass diode, bypass circuit is needed to carry out completion bypass circuit diameter.Each diode Two interconnection points are needed, and are connected to the conducting wire wiring of these interconnection points.This forms complicated circuit, causes and assembles The associated standard layout of solar energy module generates high cost.
In contrast, using thermal diffusion technology, each module only needs a bypass diode, even entirely without Bypass diode.This arrangement simplifies module assembled process, allow to execute layout manufacture using simple automation tools Step.
One bypass protection is just set due to being not necessarily to every 24 batteries, so battery module becomes easier to manufacture.Also keep away Exempt from occur complicated branch (tap-out) in module, without forming longer parallel connection in bypass circuit.This Kind thermal diffusion is implemented by the long cell strip of stacking formula of the width and/or length of formation extension of module.
According to the stacking of multiple embodiments construction in addition to for providing thermal diffusion, additionally it is possible to reduce in solar cell Thus the intensity of the electric current of dissipation improves hot spot performance.In particular, during hot spot state, dissipate in solar cell The magnitude of current depends on cell area.
Battery can be divided into smaller region due to covering construction, so, flow through a battery in hot spot state The magnitude of current be cut size function.During hot spot state, the minimum path of current flowing resistance (is typically LITHIUM BATTERY Defect interface or grain boundary).It is beneficial to reduce this electric current, can utmostly reduce reliability failures under hot spot state Risk.
Figure 22 A show the plan view when conventional modules 2200 using conventional band connection 2201 are in hot spot state. Herein, the masking 2202 on a battery 2204 causes hot localized clusters in single battery.
In contrast, Figure 22 B show the plan view when module using thermal diffusion is also at hot spot state.Herein, electric Masking 2250 on pond 2252 generates heat in the battery.However, this thermal expansion be scattered in module 2256 other both electrically engaged The battery 2254 of thermal bonding again.
It is further noted that for polycrystalline solar cell, the benefit for reducing dispersion current is at double.It is known When such polycrystalline battery is under hot spot state, since there are high-grade defect interfaces, therefore performance is poor.
As described above, specific embodiment can utilize the stacking of chamfering cutting battery to construct.In such cases, along every Closing line between a battery and adjacent cell reflects thermal diffusion advantage.
This makes the bonding length of each overlapping j oint increase to greatest extent.Since joint portion is that heat is diffused into from battery The major interfaces of battery obtain best thermal diffusion effect so this length is increased to and can ensure that greatest extent.
Figure 23 A show an example of the layout of the superbattery string with chamfering battery 2,302 2300.It constructs herein In, chamfering battery is orientated in same direction, therefore all joint portion conducting paths are all identical (125mm).
It is reverse-biased that masking 2306 on one battery 2304 causes the battery to occur.Then thermal expansion is scattered to adjacent cell.Chamfering The non-engagement end portion 2304a of battery becomes most hot, because it arrives the conducting path longest of next battery.
Figure 23 B show another example of the layout of the superbattery string with chamfering battery 2,352 2350.It constructs herein In, chamfering battery is orientated along different directions, some long edge face each others of chamfering battery.This leads to the conducting pathway at joint portion There are two length for diameter：125mm and 156mm.
In the case of the experience of battery 2354 masking 2356, the construction of Figure 23 B is showed along longer bonding length to be changed Kind thermal diffusion effect.Therefore, Figure 23 B show the thermal diffusion in the superbattery of the chamfering battery with face each other.
It is described above be absorbed in multiple solar cells are assembled in a manner of stacking on a common substrate (can be to cut out Solar cell).This results in the module with single electrical interconnection-terminal box (or j-box).
However, in order to collect enough solar energy to be used, the multiple this moulds fitted together in itself need to be usually installed Block.According to multiple embodiments, multiple solar cell modules can also be used stacking mode and assemble, to promote the area of array Efficiency.
In certain embodiments, the feature of module may be to have top conduction on the direction towards solar energy Welding, and there is bottom conductive welding on the direction back to solar energy.
Bottom welding is embedded in below battery.Therefore, bottom welding does not stop incident light, does not also negatively affect module Area efficiency.In contrast, top welding exposes, it is possible that can stop incident light, so negatively affect efficiency.
According to multiple embodiments, module itself can cover so that top welding is covered by adjacent module.Figure 24 is shown The simplification viewgraph of cross-section of this arrangement 2400, the wherein end 2401 of adjacent block 2402 are used for and current block 2406 Top welding 2404 be overlapped.Each module itself includes multiple stacking formula solar cells 2407.
It is buried in the bottom welding 2408 of current block 2406.Bottom welding 2408 is located at the lift of current stacking formula module High side, so as to Chong Die with next adjacent stacking formula module.
This stacking formula module structure can also provide additional areas for installing other elements, without not in module The final exposed area of module array is influenced sharply.The example for the module component that may be provided in overlapping region may include (but not It is limited to) terminal box (j-box) 2410 and/or bus welding.
Figure 25 shows another embodiment of stacking formula module structure 2500.Herein, with adjacent stacking formula module Pairing structure 2510 is presented in 2506 and 2508 corresponding terminal boxes 2502,2504, to realize the electrical connection between the two. This eliminates wiring, so simplify the construction of the array of stacking formula module.
In certain embodiments, terminal box can be reinforced and/or group therewith with additional structural Self-Clinching Standoffs It closes.This construction can generate integrated tilt module roof mounting bracket solution, and the wherein size of terminal box determines to tilt Degree.Array to that will cover formula module is mounted on roofdeck, and this embodiment may be particularly useful.
In the case where module includes glass substrate and glass cover-plate (for double-sided glass module), by shortening module Total length (therefore, shortens the length of exposure L generated due to stacking), can make in the case of no additional frame component Use module.By shortening the total length of module, the modules of canted arrays can be in expected physical load (for example, 5400Pa The snow load limit) under remain intact, without rupturing under strain.
It should be emphasized that using the superbattery structure for including the multiple independent solar batteries assembled in a manner of stacking, easily In change of the reconciliation to block length, to meet the physical load specific length specified with other requirements.
Figure 26 shows the schematic diagram on rear (in the shade side) surface of solar energy module, and the super electricity of stacking formula is shown in figure The exemplary electrical of the terminal box on terminal electric contact to rear side before pond on (day side) surface interconnects.Stacking formula is super The front surface terminal contact of battery can be located near module edge.
Figure 26 shows the front surface terminal contacts that superbattery 100 is electrically connected using flexible interconnection 400.Scheming In the example shown, flexible interconnection 400 includes band-like portions 9400A and finger-shaped material 9400B, and wherein band-like portions 9400A is super Grade battery 100 end nearby be parallel to the end extension, finger-shaped material 9400B perpendicular to band-like portions extend, and with super electricity The front surface metallization pattern (not shown) contact that its in the end solar cell in pond conductively engages.Conductively connect The ribbon conductor 9410 for closing interconnection piece 9400 passes through in 100 behind of superbattery, for interconnection piece 9400 to be electrically connected to Superbattery 100 constitutes the electrical components in the rear surface of part thereof of solar energy module (for example, the bypass two in terminal box Pole pipe and/or module terminals).Insulating film 9420 may be provided at conducting wire 9410 and superbattery 100 edge and rear surface it Between, for ribbon conductor 9410 and superbattery 100 to be electrically isolated.
Interconnection piece 400 optionally surrounds the edge fold of superbattery so that band-like portions 9400A is located at or part Behind positioned at superbattery.In such cases, electric insulation layer is generally arranged at the edge of interconnection piece 400 and superbattery 100 Between rear surface.
Interconnection piece 400 can be for example punched from conductive plate, be then optionally patterned, with increase its with it is super Grade battery edge-perpendicular and the mechanical plasticity on the two parallel directions, to reduce or reconcile with superbattery In edge-perpendicular and parallel direction because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery stress.This pattern Change may include (for example) forming slit, slit or hole (not shown).Interconnection piece 400 and its machinery with the engagement of superbattery Plasticity is sufficiently large so that superbattery be connected in lamination process and (be described in more detail) can because It is remained intact under stress caused by CTE mismatch.Interconnection piece 400 can be as described above used to engage the sun being overlapped by (for example) The mechanical plasticity conductive bonding material of energy battery is joined to superbattery.Optionally, conductive bonding material can be only positioned at along Multiple discrete positions (for example, corresponding to multiple positions of the discrete engagement pad of end solar cell) at superbattery edge, Continuous lines without forming the length for substantially extending superbattery edge, it is intended to reduce or reconciliation is being parallel to superbattery On the direction at edge, due to the coefficient of thermal expansion mismatch of the coefficient of thermal expansion and superbattery of conductive bonding material or interconnection piece Caused stress.
Interconnection piece 400 can (for example) be cut from scale copper, if superbattery 100 is more electric than standard silicon solar by area The small solar cell in pond is formed, thus operating current is less than conventional current, then interconnection piece 400 may be than conventional conductibility Interconnection piece is thin.For example, the copper sheet that interconnection piece 400 can be about 50 microns to about 300 microns by thickness is formed.Interconnection piece 400 can be sufficient It is enough thin, even if patterning as described above, can also reconcile in the edge-perpendicular of superbattery and parallel direction because Stress caused by the CTE of interconnection piece and the CTE mismatch of superbattery.Ribbon conductor 9410 can be formed (for example) by copper.
Figure 27 shows the schematic diagram on rear (in the shade side) surface of solar energy module, shown in figure two in parallel or More cover the exemplary electrical interconnection of formula superbattery, the terminal electric contact wherein before superbattery on (day side) surface It is connected to each other, and is connected to the terminal box in rear side.The front surface terminal contact of stacking formula superbattery can be located at mould Near block edge.
Figure 27 shows the flexible interconnection 400 just described using two to form the adjacent superbattery 100 with two Front surface terminal contact electrical contact.The bus 9430 that end extension is parallel near the end of superbattery 100 is conducted Two flexible interconnections are joined to property, and superbattery parallel connection is electrically connected.As needed, the program can be promoted, it will be attached 100 interconnected in parallel of superbattery added.Bus 9430 can be formed (for example) by copper strips.
Similar described in Figure 26 above in conjunction, interconnection piece 400 and bus 9430 are optionally around the edge of superbattery It folds so that band-like portions 9400A and bus 9430 are located at or are partly located at superbattery behind.In such cases, electricity is exhausted Edge layer is generally arranged between interconnection piece 400 and the edge and rear surface of superbattery 100 and bus 9430 and super electricity Between the edge and rear surface in pond 100.
Figure 28 shows the schematic diagram on rear (in the shade side) surface of solar energy module, shown in figure two in parallel or More cover another exemplary electrical interconnection of formula superbattery, the terminal wherein before superbattery on (day side) surface Electric contact is connected to each other, and is connected to the terminal box in rear side.The front surface terminal contact of stacking formula superbattery can Near module edge.
Figure 28 is shown is electrically connected the front surface of superbattery 100 using another example flexible interconnection piece 9440 Terminal contacts.In this example, flexible interconnection 9440 includes band-like portions 9440A, finger-shaped material 9440B and finger-shaped material 9440C, wherein band-like portions 9440A are parallel to end extension near the end of superbattery 100；Finger-shaped material 9440B hangs down Directly extend in band-like portions, and metallizes with the front surface that its in the end solar cell of superbattery conductively engages Pattern (not shown) contacts；Finger-shaped material 9440C extends perpendicular to band-like portions, and behind positioned at superbattery.Finger-shaped material 9440C is conductively joined to bus 9450.Bus 9450 is near the end of superbattery 100 along superbattery 100 The end that rear surface is parallel to superbattery 100 extends, and may extend away adjacent super for that can be likewise electrically connected to it Battery is overlapped, to which superbattery to be connected in parallel.The ribbon conductor 9410 of bus 9450 is conductively joined to by super electricity Pond is electrically interconnected to the electrical components in solar energy module rear surface (for example, the bypass diode in terminal box and/or module end Son).Electrical insulating film 9420 may be provided between finger-shaped material 9440C and the edge and rear surface of superbattery 100, bus 9450 Between the rear surface of superbattery 100 and between ribbon conductor 9410 and the rear surface of superbattery 100.
Interconnection piece 9440 can be for example punched from conductive plate, be then optionally patterned, with increase its with it is super Grade battery edge-perpendicular and the mechanical plasticity on the two parallel directions, to reduce or reconcile with superbattery In edge-perpendicular and parallel direction because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery stress.This pattern Change may include (for example) forming slit, slit or hole (not shown).Interconnection piece 9440 and its machinery with the engagement of superbattery Plasticity is sufficiently large so that superbattery be connected in lamination process and (be described in more detail) can because It is remained intact under stress caused by CTE mismatch.Interconnection piece 9440 can be as described above used to engage the sun being overlapped by (for example) The mechanical plasticity conductive bonding material of energy battery is joined to superbattery.Optionally, conductive bonding material can be only positioned at along Multiple discrete positions (for example, corresponding to multiple positions of the discrete engagement pad of end solar cell) at superbattery edge, Continuous lines without forming the length for substantially extending superbattery edge, it is intended to reduce or reconciliation is being parallel to superbattery On the direction at edge, due to the coefficient of thermal expansion mismatch of the coefficient of thermal expansion and superbattery of conductive bonding material or interconnection piece Caused stress.
Interconnection piece 9440 can (for example) be cut from scale copper, if superbattery 100 is more electric than standard silicon solar by area The small solar cell in pond is formed, thus operating current is less than conventional current, then interconnection piece 400 may be than conventional conductibility Interconnection piece is thin.For example, the copper sheet that interconnection piece 9440 can be about 50 microns to about 300 microns by thickness is formed.Interconnection piece 9440 can It is sufficiently thin, even if as described above patterning, can also reconcile in the edge-perpendicular of superbattery and parallel direction The stress because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery.Bus 9450 can be formed (for example) by copper strips.
After the front surface that finger-shaped material 9440B is joined to superbattery 100, finger-shaped material 9440C is engageable to arrive bus 9450.In such cases, once finger-shaped material 9440C is joined to bus 9450, so that it may (such as perpendicular to superbattery 100) Buckle away from the rear surface of superbattery 100.Later, finger-shaped material 9440C is flexible and along the rear surface of superbattery 100 Extend, as shown in figure 28.
Figure 29 shows the partial cross-section perspective view of two superbatteries, and it is adjacent super to show that use is clipped in figure Superbattery is electrically connected in series and electrical connection is supplied to terminal box by the flexible interconnection between the overlapped ends of battery. Figure 29 A show the enlarged view of area of interest in Figure 29.
Figure 29 and Figure 29 A show the purposes of illustrative flexible interconnection 2960, and flexible interconnection 2960 is by partly It is clipped between the overlapped ends of two superbatteries 100 and these overlapped ends is electrically interconnected, before a superbattery The rear surface terminal contacts of face extremities contact and another superbattery provide electrical connection, mutual to which superbattery be connected Even.In the example shown in the series of figures, it is hidden by the top for the solar cell that two are overlapped due to interconnection piece 2960, so from the sun The front of energy module is invisible.In another variations, the adjacent end portion of two superbatteries is not overlapped, so mutually The part of the front surface terminal contacts of one of two superbatteries is even connected in part 2960 from the front surface of solar energy module It can be seen that.Optionally, it in such variations, can be capped from the visible part in the front of module originally in interconnection piece Or dyeing (for example, intensification), to mitigate the vision between the interconnection piece and superbattery that are perceived by the normal observer of colour vision Comparison.The neighboring edge that interconnection piece 2960 can be parallel to two superbatteries extends to except the lateral edges of superbattery, to Pairs of superbattery is electrically connected with the pairs of superbattery parallel connection being similarly arranged in adjacent row.
Ribbon conductor 2970 can conductively be joined to interconnection piece 2960 as shown in the figure, by the phase of two superbatteries Neighboring terminal portion is electrically connected to the electrical components in solar energy module rear surface (for example, the bypass diode in terminal box and/or module Terminal).In another variations (not shown), ribbon conductor 2970 may be electrically connected on one of superbattery of overlapping Rear surface contact far from its overlapped ends, without conductively being engaged with interconnection piece 2960.Point that the construction can will also be hidden Connector is supplied to one or more bypass diodes or other electrical components in solar energy module rear surface.
Interconnection piece 2960 is optionally for example punched from conductive plate, is then optionally patterned, to increase it With the mechanical plasticity in the edge-perpendicular of superbattery and the two parallel directions, to reduce or reconcile with it is super In the edge-perpendicular of battery and parallel direction because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery stress.This Kind patterning may include (for example) forming slit, slit (as shown in the figure) or hole.It flexible interconnection and its is connect with superbattery The mechanical plasticity of conjunction is sufficiently large, so that energy (is described in more detail) in the superbattery of interconnection in lamination process It is enough to be remained intact under the stress because of caused by CTE mismatch.Flexible interconnection can be as described above used to engage overlapping by (for example) The mechanical plasticity conductive bonding material of solar cell be joined to superbattery.Optionally, conductive bonding material can position In multiple discrete positions along superbattery edge, without forming the continuous of the substantial length for extending superbattery edge Line, it is intended to reduce or reconcile on the direction for being parallel to superbattery edge, because of the thermal expansion of conductive bonding material or interconnection piece Stress caused by the coefficient of thermal expansion mismatch of coefficient and superbattery.Interconnection piece 2960 can (for example) be cut from scale copper.
Embodiment may include the one or more features described in following US patent publication：No. 2014/ 0124013 U.S. Patent Publication；With No.2014/0124014 U.S. Patent Publications, this two patents are announced with the side of reference Formula is incorporated by herein, for all purposes.
Subject description discloses the high-efficiency solar modules including silicon solar cell, and the silicon solar cell is with folded Lid mode arranges and is electrically connected in a series arrangement, to form superbattery, wherein superbattery in solar energy module by cloth It is set to the row of physical parallel.For example, the length of superbattery can substantially across the overall length of solar energy module or overall with, or Person, two or more superbatteries can be arranged to end-to-end in a row.This arrangement conceals between solar cell Electrical interconnection, and therefore can be used for forming the solar energy module with visual attraction, wherein adjacent series connection connects Connecing between solar cell has very little difference or no difference.
Superbattery may include any amount of solar cell, in some embodiments, including at least 19 sun Energy battery, and for example, in certain embodiments, it is greater than or equal to 100 silicon solar cells.Along in superbattery Between electric contact at position may need superbattery electricity being segmented into two or more segmentations being connected in series with, and simultaneously Maintain the continuous superbattery of physics.Subject description discloses some arrangements, wherein to one or more of superbattery silicon The back surface engagement pad of solar cell carries out such electrical connection, in order to provide the invisible electricity before solar energy module Tapping point, and therefore it is referred to herein as " hiding tap ".Hiding tap is the back side and the biography of solar cell Electrical connector between the property led interconnection piece.
This specification also discloses using flexible interconnection that front surface superbattery termination contact pad, rear surface is super Battery terminal contact pad or hiding tap engagement pad are electrically interconnected to other in other solar cells or solar energy module Electrical components.
In addition, subject description discloses use electroconductive binder directly to connect adjacent solar battery in superbattery It closes each other, it is suitable in order to provide the machinery of the thermal expansion mismatch reconciled between superbattery and the glass front plate of solar energy module It is engaged from electric conductivity, electroconductive binder is used in combination and is engaged flexible interconnection engagement to superbattery, institute by mechanical rigid It states mechanical rigid and engages the thermal expansion mismatch for forcing flexible interconnection to reconcile between flexible interconnection and superbattery.It keeps away in this way The solar energy module that may occur by the thermal cycle of solar energy module damage is exempted from.
As described further below, can be used for point of superbattery with being electrically connected for hiding tap engagement pad Section is electrically connected with the corresponding segments parallel connection of one or more of adjacent row superbattery, and/or for various applications, including But it is not limited to power optimization (for example, the micro- inverter of bypass diode, AC/DC, DC/DC converters) and reliability application, it will be electric Connection, which provides, arrives solar energy module circuit.
Substantially completely black appearance is provided for solar energy module by combining hiding intercell connection, as just mentioned The aesthetic appearance of solar cell can be further enhanced using hiding tap, and by allowing Modular surface region Greater portion by solar cell effective coverage fill, the efficiency of solar energy module can also be improved.
Turning now to attached drawing, to understand the solar energy module described in this specification in more detail, Fig. 1 is shown The viewgraph of cross-section for a string of the solar cells 10 arranged in a manner of stacking, being connected in series with, the wherein end of adjacent solar battery Portion is overlapped and is electrically connected, to form superbattery 100.Each solar cell 10 include semiconductor diode structure and It is connected to the electric contact of semiconductor diode structure, the electric current that solar cell 10 wherein generates when being irradiated by light can pass through this A little electric contacts and be supplied to external loading.
In the example of this specification description, each solar cell 10 is rectangular crystal silicon solar cell, tool There are front surface (day side) metallization pattern and back surface (in the shade side) metallization pattern, front surface metallization pattern to be arranged in n On the semiconductor layer of type electric conductivity, back surface metallization pattern is arranged on the semiconductor layer of p-type conductivity, these metallization Pattern provides electrical contact for the opposite sides of n-p junction.However, if applicable, other materials system, two poles can be used Pipe structure, physical size or electrical contact arrangement.For example, preceding (day side) surface metalation pattern may be provided at p-type conductibility Semiconductor layer on, rear (in the shade side) surface metalation pattern may be provided on the conductive semiconductor layer of n types.
Referring again to Fig. 1, in superbattery 100, adjacent solar battery 10 passes through conductive bonding material reality at them It is conductively directly connectcted in the region being now overlapped each other, the conductive bonding material is by the preceding table of a solar cell Face metallization pattern is electrically connected to the rear surface metallization pattern of adjacent solar battery.Suitable conductive bonding material can wrap Include such as electroconductive binder, electrically conductive adhesive film and strip of conductive adhesive and general solder.
Figure 31 AA and Figure 31 A show that the use of example flexible interconnection piece 3160, the flexible interconnection are partially sandwiched in It is electrically interconnected between the overlapped ends of two superbatteries 100 and by them, so as to the front surface ends points for superbattery Electrical connection is provided with the rear surface ends points of another superbattery, thus by superbattery interconnected in series.In shown example In, due to being hidden by the top for the solar cell that two are overlapped, interconnection piece is not seen before solar energy module 3160.In another variations, the adjacent end portion of two superbatteries is not overlapped, so being connected in interconnection piece 3160 Part to the front surface terminal contacts of one of two superbatteries can see from the front surface of solar energy module.Optionally Ground, in such variations, can be capped or dye from the visible part in the front of module originally in interconnection piece (for example, plus It is deep), to mitigate the visual contrast between the interconnection piece and superbattery that are perceived by the normal observer of colour vision.Interconnection piece 3160 neighboring edges that can be parallel to two superbatteries extend to except the lateral edges of superbattery, to surpass pairs of Grade battery is electrically connected with the pairs of superbattery parallel connection being similarly arranged in adjacent row.
Ribbon conductor 3170 can conductively be joined to interconnection piece 3160 as shown in the figure, by the phase of two superbatteries Neighboring terminal portion is electrically connected to the electrical components in solar energy module rear surface (for example, the bypass diode in terminal box and/or module Terminal).In another variations (not shown), ribbon conductor 3170 may be electrically connected on one of superbattery of overlapping Rear surface contact far from its overlapped ends, without conductively being engaged with interconnection piece 3160.Point that the construction can will also be hidden Connector is supplied to one or more bypass diodes or other electrical components in solar energy module rear surface.
Fig. 2 shows the exemplary rectangular solar energy module 200 for including six rectangle superbatteries 100, each rectangle is super The length of the long side for being approximately equal to the length to solar energy module of grade battery.Superbattery is arranged to six parallel rows, long side The long side for being parallel to module is orientated.The solar energy module of like configurations may also comprise the superbattery of this length of side, but its number of rows It is more than number of rows shown in the example or few.In other variations, the respective length of superbattery may be approximately equal to rectangle The length of the short side of solar energy module, and the superbattery is arranged to parallel row, wherein they long side it is parallel It is orientated in the short side of module.In other other arrangements, each row may include series electrical interconnection two or more are super Battery.The long side that the short side and length that module can be for example, about 1 meter with length are for example, about 1.5 to about 2.0 meters. Can be that solar energy module selects any other suitable shape (for example, square) and size.
Each superbattery in this example includes 72 rectangle solar cells, the width of each rectangle solar cell Degree is substantially equal to the 1/6 of 156mm squares or the width of pseudo-square wafers.Any other appropriate number of tool can also be used There is the rectangle solar cell of any other suitable dimension.
Length-width ratio is big, area be less than standard 156mm × 156mm solar cells long and narrow solar cell (such as figure institute Show) it is advantageously used for reducing the I in solar cell module disclosed in this specification2R resistive powers are lost.Tool It says to body, since the silicon solar cell of the area comparison with standard size of solar cell 10 reduces, so solar cell produces Raw electric current reduces, the resistive work(in series-connected battery string to directly reduce solar cell and such solar cell Rate is lost.
It is, for example, possible to use being conductively joined to the edge for the back surface metallization pattern for being only located at solar cell The electrical interconnection of the hiding tap engagement pad in one or more of part is connected to the hidden of superbattery back surface to make The tap of Tibetan.Alternatively, the whole length substantially along solar cell can be used (perpendicular to the length of superbattery Axis) extend and be conductively joined to be distributed in back surface metallization pattern along the length of solar cell it is multiple The interconnection piece of hiding tap engagement pad makes hiding tap.
Figure 31 A show the exemplary solar cell back of the body for being suitble to the hiding tap being connect with edge to be used together Surface metalation pattern 3300.Metallization pattern includes continuous aluminium electric contact 3310, is arranged to and solar cell back surface The parallel and neighbouring multiple silver-colored engagement pads 3315 of long side edge and be respectively arranged to short with solar cell back surface The hiding tap engagement pad 3320 of the parallel silver of one neighboring edge in side.When solar cell is arranged in super electricity When in pond, engagement pad 3315 is Chong Die with the front surface of adjacent rectangle solar cell and is directly connectcted to the front surface.Mutually Even part can conductively be joined to one or the other in hiding tap engagement pad 3320, to be superbattery Hiding tap is provided.(if desired, two such interconnection pieces can be used, to provide two hiding taps).
In the arrangement shown in Figure 31 A, the electric current for flowing to hiding tap is roughly parallel to solar cell Long side reaches interconnected polymerization point (contact 3320) across back surface cell metallization.In order to promote the electric current along this path, Back surface metallized film resistance is preferably less than or equal to about 5 ohm every square, or 2.5 Europe less than or equal to about every square Nurse.
Figure 31 B, which are shown, to be suitble to the length along solar cell back surface using the hiding of total linear interconnection piece Another exemplary solar cell back surface metallization pattern 3301 that tap is used together.Metallization pattern includes connecting Continuous aluminium electric contact 3310 is arranged to the multiple silver-colored engagement pads parallel and neighbouring with the long side edge of solar cell back surface It 3315 and is arranged parallel on the long side back surface in a row and in solar cell of solar cell substantially The hiding tap engagement pad 3325 of multiple silver placed in the middle.The interconnection piece extended substantially along the whole length of solar cell It can be conductively joined to hiding tap engagement pad 3325, to provide hiding tap for superbattery.Stream Electric current to hiding tap passes principally through total linear interconnection piece, so that the electric conductivity pair of back surface metallization pattern It is less important in hiding tap.
The position for the hiding tap engagement pad that hiding tap interconnection piece on solar cell back surface is engaged Set with quantity can influence back surface metallization across solar cell, hiding tap engagement pad and interconnection piece electric current The length in path.Therefore, the arrangement of hiding tap engagement pad can be selected, is hidden so as to lead to and pass through Tap interconnection piece current path in electric current collection resistance minimize.In addition to Figure 31 A to Figure 31 B (and lower articles and opinions Figure 31 C stated) shown in configure except, suitably hiding tap engagement pad arrangement may also include such as two-dimensional array with And the row vertical with the long axis of solar cell.In the latter case, for example, the position of the hiding tap engagement pad of this row Setting can be adjacent with the short edge of the first solar cell.
Figure 31 C show the hiding tap for being suitble to connect with edge or the length along solar cell back surface Another exemplary solar cell back surface metallization that degree is used together using the hiding tap of total linear interconnection piece Pattern 3303.Metallization pattern includes continuous copper-braid contact pad 3315, is arranged to the long side with the back surface of solar cell Sides aligned parallel and neighbouring；Multiple copper finger-shaped materials 3317 are connected to engagement pad 3315 and are extended vertically from the engagement pad；With And the tap engagement pad 3325 of the total line concealing of Continuous Copper, the long side for being parallel to solar cell extend and in solar energy It is substantially centered on the back surface of battery.The interconnection piece of edge connection can be joined to the end of copper bus 3325, to be super Grade battery provides hiding tap.(if desired, two such interconnection can be used at the either end of copper bus 3325 Part, to provide two hiding taps).Alternatively, the interconnection piece extended substantially along the whole length of solar cell It can be conductively joined to copper bus 3325, to provide hiding tap for superbattery.
Interconnection piece for forming hiding tap can be any by welding, soldering, conductive adhesive or use Other suitable modes are joined to the hiding tap engagement pad in back surface metallization pattern.For such as Figure 31 A to figure For the metallization pattern for using silver pad shown in 31B, interconnection piece can be formed for example by tin-coated copper.Another method is to make Hiding tap is directly formed to aluminum back surface contact 3310 to the aluminum conductor that aluminium engages with aluminium is formed, this can be such as It is formed by electricity or laser welding, soldering or conductive adhesive.In certain embodiments, contact may include tin.Such as just In the case of described in, the back surface metallization of solar cell will lack silver-colored engagement pad 3320 (Figure 31 A) or 3325 (figures 31B), but edge connection or total linear aluminium interconnection piece can be joined to aluminium (or tin) at the position corresponding to these engagement pads Contact 3310.
Hiding tap interconnection piece (or with front surface or the interconnection piece of rear surface superbattery terminal contact) and silicon The stress obtained on different heat expansion and solar cell and interconnection piece between solar cell can lead to rupture and other Failure mode, so as to reduce the performance of solar energy module.Therefore, it is necessary to match the tap hidden and other interconnection pieces It is set to and reconciles such different expansion in the case where not forming significant stress.For example, by by high ductile material (for example, soft Copper, very thin copper sheet) it is formed, by low coefficient of thermal expansion materials (for example, Covar (Kovar), invar alloy (Invar) Or other low thermal coefficient of expansion iron-nickel alloys) formed, or by with substantially matching silicon coefficient of thermal expansion, incorporate reconciliation Geometry expansion characteristics (such as, slit, groove, Kong Huo in the plane of different heat expansion between interconnection piece and silicon solar cell Truss structure) and/or using geometric properties (such as, kink, jog or scrobicula) outside the plane of the such different heat expansion of reconciliation Material formed, interconnection piece can provide stress and thermally expand eliminate.Be joined to hiding tap engagement pad (or engagement The part of interconnection piece to superbattery front surface or rear surface termination contact pad, as described below) can have About 100 microns, less than about 50 microns, the thickness less than about 30 microns or less than about 25 microns, to increase the flexibility of interconnection piece.
Referring again to Fig. 7 A, Fig. 7 B-1 and Fig. 7 B-2, these illustrate several exemplary interconnection piece configurations, by with reference to mark Number 400A-400U instruction, the interconnection piece configuration uses stress elimination geometric properties, and can be suitable as hiding Tap interconnection piece or for being electrically connected with front surface or rear surface superbattery terminal contact.These interconnection pieces Length be usually substantially equal to the rectangle solar cell that they are engaged long side length, but they can have it is any Other suitable length.Exemplary interconnection piece 400A to 400T shown in Fig. 7 A is eliminated special using various plane stress Sign.The exemplary interconnection piece shown in outer (x-z) view of the plane of (x-y) view and Fig. 7 B-2 in the plane of Fig. 7 B-1 Turn of bilge 3705 is used as the plane external carbuncle in metal strip and eliminates feature by 400U.The name that turn of bilge 3705 reduces metal tape is anti- Draw rigidity.Turn of bilge allows carrying material local buckling, rather than is only extended in the band bearing tension force.For thin welding, This can make nominal extensional rigidity substantially reduce such as 90% or more.If the definite measurement that nominal extensional rigidity is reduced determine in Dry factor, includes the thickness of the quantity of turn of bilge, the geometry of turn of bilge and band.Interconnection piece can also will be in plane and plane External carbuncle is eliminated feature and is applied in combination.
Figure 37 A-1 to Figure 38 B-2 being discussed further below are shown to use in plane and/or the elimination of plane external carbuncle is several What feature and the edge that can be suitable as hiding tap connect several exemplary interconnection pieces configurations of interconnection piece.
In order to reduce or minimize the arrangement of conductors quantity needed for the tap that connection is each hidden, it can utilize and hide Tap interconnection bus.Point that this method is hidden adjacent superbattery by using hiding tap interconnection piece Junction contacts pad is connected to each other.(electrical connection is typically just arrived just or negative, that is, the polarity per one end is identical).
For example, Figure 32 is shown：First hiding tap interconnection piece 3400, substantially along in the first superbattery 100 The entire width of solar cell 10 extend and be conductively joined to hiding point be arranged to as shown in figure 31b Junction contacts pad 3325；And the second hiding tap interconnection piece 3400, in the superbattery 100 in adjacent row The entire width of corresponding solar cell, which extends and is similarly conductively joined to, is arranged to as shown in figure 31b hidden The tap engagement pad 3325 of Tibetan.Two interconnection pieces 3400 be arranged to it is each other in a straight line and optionally adjacent to each other or Overlapping, and can conductively be joined to and be electrically connected each other or otherwise, to be formed two adjacent superbatteries The bus of interconnection.As needed, this scheme can extend on other rows (for example, all rows) of superbattery, to form packet Include the parallel segmentation of solar energy module of several adjacent superbattery segmentations.Figure 33 shows one of the superbattery in Figure 32 The perspective view divided.
Figure 35 shows the example that the superbattery in adjacent row is interconnected by short interconnection piece 3400, the short interconnection Part crosses over the gap between superbattery, and is conductively joined to the hiding tap contact on a superbattery Another hiding tap engagement pad 3320 on pad 3320 and another superbattery, wherein engagement pad be arranged to as Shown in Figure 32 A.Figure 36 shows similar arrangement, wherein short interconnection piece crosses over the gap between two superbatteries in adjacent row, And conductively it is joined to the end of the center copper bus portion of the metallization of the back surface on a superbattery and another The adjacent end portion of the center copper bus portion of the back surface metallization of one superbattery, the wherein metallization of copper back surface by with It is set to as shown in Figure 31 C.In the two examples, as needed, interconnection scheme can superbattery other row (for example, All rows) on extend, include the parallel segmentation of solar energy module that several adjacent superbatteries are segmented to be formed.
Figure 37 A-1 to Figure 37 F-3 show the exemplary short hiding tap that feature 3405 is eliminated including plane stress (x-y) and outer (x-z) view of plane in the plane of head interconnection piece 3400.(x-y planes are solar battery back surface metalations The plane of pattern).In the example of Figure 37 A-1 to Figure 37 E-2, each interconnection piece 3400 includes being set to one or more put down In-plane stress eliminates the protruding portion 3400A and 3400B on the opposite side of feature.Exemplary planar internal stress eliminates feature One, two or more open diamonds shape, the arrangement of the arrangement of zigzag and one, two or more groove.
Term " plane stress elimination feature " used herein can also refer to one of interconnection piece or interconnection piece The thickness or ductility divided.For example, interconnection piece 3400 shown in Figure 37 F-1 to Figure 37 F-3 by one section of straight thin copper belt or Copper foil is formed, and e.g., less than or equal to about 100 microns of the thickness T of the thin copper belt or copper foil in an x-y plane, is less than or is waited In about 50 microns, less than or equal to about 30 microns or less than or equal to about 25 microns, to increase the flexibility of interconnection piece.Thickness T can be, for example, about 50 microns.The length L of interconnection piece can be, for example, about 8 centimetres (cm), and the width W interconnected can be with For example, about 0.5cm.The front surface and back surface view of the interconnection piece in x-y plane is shown respectively in Figure 37 F-3 and Figure 37 F-1. Rear surface of the front surface of interconnection piece towards solar energy module.Since interconnection piece can be parallel across two in solar energy module Gap between the superbattery of row, therefore, from can see that interconnection piece previously by the gap one of solar energy module Point.Optionally, the visible part of interconnection piece can be dimmed, such as coating black polymeric nitride layer, to reduce its visibility. In shown example, length L2 is that the central part 3400C of the front surface of the interconnection piece of about 0.5cm is poly- coated with relatively thin black Close nitride layer.In general, L2 is greater than or equal to the width in the gap between superbattery row.The thickness of black polymeric nitride layer can for Such as from about 20 microns.Such thin copper belt interconnection piece can also optionally use in plane or plane external carbuncle eliminates feature, such as above It is described.For example, interconnection piece may include stress elimination plane bent out portion, as described in above in association with Fig. 7 B-1 and Fig. 7 B-2.
Figure 38 A-1 to Figure 38 B-2 show the exemplary short hiding tap that feature 3407 is eliminated including plane external carbuncle (x-y) and outer (x-z) view of plane in the plane of head interconnection piece 3400.In this example, each interconnection piece 3400 includes being set to One or more plane external carbuncles eliminate the protruding portion 3400A and 3400B on the opposite side of feature.Exemplary planar external carbuncle Eliminate the arrangement that feature includes one, two or more bending, kink, scrobicula, jog or spine.
The type of stress relief feature shown in Figure 37 A-1 to Figure 37 E-2 and Figure 38 A-1 to Figure 38 B-2 and arrangement side Formula and the interconnection tape thickness described above in association with Figure 37 F-1 to Figure 37 F-3 can also be used in what length as described above was hidden In tap interconnection piece, and if applicable, it is also possible to be joined to superbattery rear surface or front surface terminal contact Interconnection piece in.Interconnection piece may include in plane and plane external carbuncle eliminates the combination of feature.Disappear with plane external carbuncle in plane Except feature is designed to reduce or minimizes the tension and stress effect on solar cell joint portion, and to form height The degree reliably electrical connection with elasticity.
Figure 39 A-1 and Figure 39 A-2 show the exemplary configuration for short hiding tap interconnection piece, described short hidden The tap interconnection piece of Tibetan includes battery contact pad alignment characteristics and superbattery edge alignment characteristics, is advantageously implemented automatic Change and accurate places and easily fabricated.Figure 39 B-1 and Figure 39 B-2 are shown for the short of asymmetric tab length The exemplary configuration of hiding tap interconnection piece.Such asymmetry interconnection piece can be on relative orientation, to avoid parallel In the conducting wire overlapping that the long axis of superbattery extends.(see below the discussion to Figure 42 A to Figure 42 B).
Hiding tap, which can be formed needed for module placement, as described herein is electrically connected, in order to provide required Modular circuit.For example, can along superbattery in the interval of 12,24,36 or 48 solar cells or In the tap connection that any other suitable interval is hidden.Interval between hiding tap can be according to tool Body application determines.
Each superbattery generally includes the front surface terminal contact of the at one end in superbattery and in super Rear surface terminal contact at the other end of battery.The length of solar energy module or the modification shape of width are crossed in superbattery In formula, these terminal contacts are arranged adjacent to the opposite edges of solar energy module.
Flexible interconnection can conductively be joined to the front surface or rear surface terminal contact of superbattery, to incite somebody to action Superbattery is electrically connected to other solar cells or is electrically connected to mould other electrical components in the block.For example, Figure 34 A are shown The viewgraph of cross-section of exemplary solar energy module, wherein interconnection piece 3410 are conductively joined to the end of superbattery Rear surface terminal contact.Rear surface terminal contact interconnects 3410 Or foil has the thickness on the surface of the solar cell engaged perpendicular to it, the thickness less than or equal to about 100 microns, it is small In or equal to about 50 microns, less than or equal to about 30 microns or less than or equal to about 25 microns, to increase the soft of interconnection piece Property.In the plane of solar cell surface, interconnection piece is can on the direction of direction of current flow for flowing through interconnection piece With the width with being greater than or equal to about 10mm, to improve conduction.As shown, rear surface terminal contact interconnection piece 3410 can be located at behind solar cell, wherein on the direction for being parallel to superbattery row, interconnection piece does not have any one Part extends to except superbattery.
Similar interconnection piece can be used for being connected to front surface terminal contact.Alternatively, in order to reduce in solar energy module The front surface area occupied by front surface terminal interconnection piece, front surface interconnection piece may include being directly connectcted to the thin of superbattery Flexible portion and the offer conductive thicker portion of higher.This arrangement reduces necessary to conductibility needed for realization Interconnection piece width.For example, the thicker portion of interconnection piece can be the integration section of interconnection piece, can also be to be joined to interconnection piece Thinner part separate part.For example, Figure 34 B to Figure 34 C, which are each illustrated, is conductively joined to superbattery end The viewgraph of cross-section of the exemplary interconnection piece 3410 of the front surface terminal contact at place.In the two examples, it is directly connectcted to surpass The thin flexible portion 3410A of the interconnection piece of grade battery includes thin copper belt or foil, and the thin copper belt or foil have to be connect perpendicular to it The thickness on the surface of the solar cell of conjunction, the thickness less than or equal to about 100 microns, less than or equal to about 50 microns, be less than Or equal to about 30 microns or less than or equal to about 25 microns.The thicker copper strips part 3410B of interconnection piece is joined to thin part 3410A, to improve the conductibility of interconnection piece.In Figure 34 B, the conductive tape in the rear surface of thin interconnecting parts 3410A 3410C engages thin interconnecting parts to superbattery and thick interconnecting parts 3410B.In Figure 34 C, thin interconnecting parts 3410A makes It is joined to thick interconnecting parts 3410B with electroconductive binder 3410D, and super electricity is joined to using electroconductive binder 3410E Pond.Electroconductive binder 3410D and 3410E can be identical or different.Electroconductive binder 3410E can be such as solder.
Solar energy module described in this specification may include laminate structures as shown in fig. 34 a, wherein superbattery and One or more packaging part materials 3610 are clipped between transparent front plate 3620 and back plate 3630.Transparent front plate can be (for example) Glass.Back plate can also be glass or any other suitable material.Additional encapsulation bar can be arranged in rear surface terminal Between interconnection piece 3410 and the rear surface of superbattery, as shown in the figure.
As described above, hiding tap provides the module appearance of " completely black ".Since these connections are using usually high What the conducting wire of degree reflection was formed, therefore, and the solar cell of attachment is compared, they will generally have high contrast.However, By forming connection in the rear surface of solar cell, and by also by other conducting wire cloth in solar energy module circuit Line does not see various conducting wires behind solar cell.This will allow multiple tie points (hiding tap), while still Maintain " completely black " appearance.
Hiding tap can be used to form various module placements.In Figure 40 (physical layout) and Figure 41 (electrical schematic diagram) Example in, solar energy module include six superbatteries, the length of each superbattery extension of module.Hiding tap Each superbattery is divided into three sections by engagement pad and short interconnection piece 3400, and adjacent superbattery sectional parallel is electrically connected It connects, to form the three groups of superbattery being connected in parallel segmentations.Each group be incorporated in (insertion) to the laminated construction of module A different bypass diodes is connected in parallel in bypass diode 1300A-1300C.Bypass diode can for example positioned at Between the positive back of superbattery or superbattery.For example, bypass diode can approximately along with solar energy module long side Parallel solar energy module center line setting.
In the example of Figure 42 A to Figure 42 B (electrical schematic diagram for also corresponding to Figure 41), solar energy module includes six super Grade battery, the length of each superbattery extension of module.Hiding tap engagement pad and short interconnection piece 3400 will be each super Battery is divided into three sections, and adjacent superbattery sectional parallel is electrically connected, to form three groups of super electricity being connected in parallel Pond is segmented.Each group connects a 1500A-1500C bypasses different from bypass diode 1300A-1300C by bus Diodes in parallel connects, and bus connection is located at superbattery below and by hiding tap engagement pad and short mutual Even part is connected to the bypass diode positioned at the rear portion of terminal box internal module.
Figure 42 B provide short hiding tap interconnection piece 3400 and the detailed connection of conducting wire 1500B and 1500C regard Figure.As shown, these conducting wires do not overlap each other.In the example shown, this is not right on relative orientation by using being arranged in Interconnection piece 3400 is claimed to realize.It is that there are one the first couples of the protruding portion of length using tool to avoid the alternative that conducting wire is overlapped Claim the second asymmetric interconnection part 3400 of interconnection piece 3400 and the protruding portion with another length.
In the example of Figure 43 (electrical schematic diagram for also corresponding to Figure 41), solar energy module is configured similarly to Figure 42 A It is shown, the difference is that hiding tap interconnection piece 3400 forms the continuous of the entire width for substantially extending solar energy module Bus.Each bus can be the single long interconnection piece for the back surface metallization for being conductively joined to each superbattery 3400.Alternatively, bus may include multiple individual interconnection pieces, each interconnection piece across single superbattery, conductively It is joined to and is electrically interconnected each other or otherwise, as described in above in association with Figure 41.Figure 43 is also shown：Superbattery terminal is mutual Even part 3410, continuous bus is formed along one end of solar energy module, and the front surface terminal to be electrically connected superbattery touches Point；And additional superbattery terminal interconnection piece 3410, continuous bus is formed along the opposite end of solar energy module, with electricity Connect the rear surface terminal contact of superbattery.
The exemplary solar energy module of Figure 44 A to Figure 44 B also corresponds to the electrical schematic diagram of Figure 41.The example is used as schemed Short hiding tap interconnection piece 3400 in 42A, and formed for superbattery front surface and rear surface terminal contact The interconnection piece 3410 of continuous bus, as shown in figure 43.
In the example of Figure 47 A (physical layout) and Figure 47 B (electrical schematic diagram), solar energy module includes six super electricity Pond, each superbattery extend the whole length of solar energy module.Hiding tap engagement pad and short interconnection piece 3400 will be every A superbattery is segmented into the part of the part and 1/3 length of 2/3 length.The interconnection piece of the lower edge of solar energy module 3410 (as shown in the picture) by three row of left side be connected in parallel to each other interconnection, three row of right side be connected in parallel to each other interconnection and three row of left side with it is right Three row's interconnected in series of side.This arrangement forms the three groups of superbattery being connected in parallel segmentations, wherein each super electricity The length of pond group is the 2/3 of the length of superbattery.Each group of different from a bypass diode 2000A-2000C side Road diodes in parallel connection.If they are electrically connected as shown in figure 41, the voltage of this arrangement offer It is the about twice of identical superbattery, electric current is about half of identical superbattery.
As described in above in association with Figure 34 A, being joined to the interconnection piece of superbattery rear surface terminal contact can be fully located at Behind superbattery, and it is invisible from the front side of solar energy module (day side).It is joined to superbattery front surface terminal The interconnection piece 3410 of contact in the rearview of solar energy module (for example, such as in Figure 43) as it can be seen that because its extend to it is super Except the end of battery (for example, as in Figure 44 A) or because its around superbattery end and the end Lower section folds.
Help a small amount of solar cell of each bypass diode being grouped using hiding tap.Figure 48 A extremely In the example of Figure 48 B (physical layout is shown respectively), solar energy module includes six superbatteries, and each superbattery extends The length of module.Each superbattery is segmented into five parts by hiding tap engagement pad and short interconnection piece 3400, and by phase Adjacent superbattery sectional parallel electrical connection, to form the five groups of superbattery being connected in parallel segmentations.Each group be incorporated to it is (embedding Enter) it is connected in parallel to a bypass diode different in the bypass diode 2100A-2100E in the laminated construction of module. Bypass diode can be for example between the positive back of superbattery or superbattery.Superbattery terminal interconnection piece 3410 form continuous bus along one end of solar energy module, to be electrically connected the front surface terminal contact of superbattery；And it is attached Superbattery terminal interconnection piece 3410 is added to form continuous bus along the opposite end of solar energy module, to be electrically connected superbattery Rear surface terminal contact.In the example of Figure 48 A, before single terminal box 2110 is electrically connected to by conducting wire 2115A and 2115B Surface and rear surface terminal interconnection bus.However, there is no diode in terminal box, therefore alternatively (Figure 48 B), can eliminate Long return wire 2215A and 2115B, and with two unipolarities (+or -) wiring of the opposite edge positioned at such as module Box 2110A-2110B replaces single terminal box 2110.This eliminates the resistance loss in long return wire.
Although each superbattery electricity is segmented into three groups or five groups too by example as described herein using hiding tap It is positive can battery, but these examples are intended for illustrating and unrestricted.It more generally says, hiding tap can be used for will be super Battery electricity is segmented into than more or less groups of the solar cell, and/or is segmented into than more or less a sun It can every group of battery.
In the normal operating of solar energy module as described herein, due to there is no bypass diode forward bias and conduction, Therefore, little or no electric current passes through any hiding tap engagement pad.On the contrary, electric current passes through in the adjacent overlapping sun The battery formed between energy battery engages and flows through the length of each superbattery to battery conductibility.In contrast, Figure 45 shows An electric current when part for solar energy module is gone out to get around by the bypass diode by forward bias.As shown by arrows, exist In this example, the electric current in the superbattery of the leftmost side is flowed along superbattery, until the solar cell of tap is reached, Subsequently pass through back surface metallization, hiding tap engagement pad (not shown) and the adjacent superbattery of the solar cell In the second solar cell the second solar cell for being engaged of interconnection piece 3400, interconnection piece on another hiding point Junction contacts pad (not shown), flow through the back surface metallization of the second solar cell, and flow through additional hiding tap Head engagement pad, interconnection piece and solar battery back surface metalation to reach bus connection 1500, then arrive two poles of bypass Pipe.The electric current for flowing through other superbatteries is similar.As can be seen from the figure, in this case, hiding tap Head engagement pad can conduct the electric current from two or more rows superbattery, and to conduct any list more in the block than mould The big electric current of the electric current that is generated in a solar cell.
In general, do not have in the solar cell front surface opposite with hiding tap engagement pad bus, engagement pad or Other blocking elements (in addition to front surface metallization finger-shaped material or the lap of adjacent solar battery).Therefore, if hidden Tap engagement pad formed on silicon solar cell by silver, then silver-colored engagement pad alleviate back surface field prevent back of the body table In the case of the effect of face Carrier recombination, the light that can reduce solar cell in the region of hiding tap engagement pad turns Change efficiency.In order to avoid this loss in efficiency, most of solar cell in usual superbattery does not include point hidden Junction contacts pad.(for example, in some variations, only for needing hiding tap for bypass diode circuit Those of engagement pad solar cell will be including such hiding tap engagement pad).In addition, in order to make to include point hidden Electric current in the solar cell of junction contacts pad generates and lacks the electricity in the solar cell of hiding tap engagement pad Stream, which generates, to match, including the solar cell of hiding tap engagement pad can have than lacking hiding tap contact The light collecting zone of the solar cell bigger of pad.
Individually the rectangular dimension of hiding tap engagement pad can be e.g., less than or equal to about 2mm be multiplied by be less than or Equal to about 5mm.
During operation with during test, solar energy module is subjected to the temperature generated by the temperature change in installation environment Degree cycle.As shown in Figure 46 A, during this temperature cycles, other portions of silicon solar cell and module in superbattery The thermal expansion mismatch between (for example, glass front plate of module) is divided to cause to occur between superbattery and the other parts of module Along the relative motion of the long axis of superbattery row.This mismatch is intended to stretch or compresses superbattery, and may damage Conductibility engagement between solar cell in solar cell or superbattery.Similarly, as shown in Figure 46 B, During temperature cycles, the thermal expansion mismatch being joined between the interconnection piece of solar cell and solar cell leads to interconnection piece Relative motion is occurring on the direction that superbattery is arranged between solar cell.This mismatch can tense and may Damage solar cell, interconnection piece and the conductibility engagement between them.For be joined to hiding tap engagement pad with And it is joined to the interconnection piece of superbattery front surface or rear surface terminal contact, it may occur however that such case.
Similarly, such as during shipment or according to weather (for example, wind and snow), the circulation machinery of solar energy module Load can between the battery in superbattery joint and the joint formation office between solar cell and interconnection piece Portion's shearing force.These shearing forces may also can damage solar energy module.
In order to prevent by the phase along superbattery platoon leader's axis between superbattery and the other parts of solar energy module Cause problem to movement, it can be to for adjacent overlapping solar cell engagement to be carried out to mutual conductive adhesive Selection engages 3515 (Figure 46 A), the flexible conductor to form flexible conductor between the solar cell of overlapping Engagement provides mechanical plasticity for superbattery, to which within the temperature range of about -40 DEG C to about 100 DEG C, reconciliation is parallel to super Thermal expansion mismatch on the direction of grade battery row between superbattery and the glass front plate of module, keeps the thermal expansion mismatch unlikely In damage solar energy module.Conductive adhesive can pass through selection to form conductibility engagement, and the conductibility is bonded on mark Under quasi- test condition the modulus of shearing of (that is, 25 DEG C) be e.g., less than or equal to about 100 megapascal (MPa), less than or equal to about 200 megapascal, less than or equal to about 300 megapascal, less than or equal to about 400 megapascal, less than or equal to about 500 megapascal, be less than or wait In about 600 megapascal, less than or equal to about 700 megapascal, less than or equal to about 800 megapascal, less than or equal to about 900 megapascal or Person is less than or equal to about 1000 megapascal.Flexible conductor engagement between the adjacent solar battery of overlapping can reconcile for example every Differential motion between a battery and glass front plate greater than or equal to about 15 microns.Suitable conductive adhesive may include example Such as derive from the ECM of engineering conductive material Co., Ltd (Engineered Conductive Materials LLC) 1541-S3。
In order to promote the hot-fluid along superbattery, so that mould is in the block due to masking or certain other reasons In the case that solar cell is reverse-biased, reduces the issuable hot spot during the operation of solar energy module and damage solar energy mould The risk of block, the conductibility engagement between the adjacent solar battery of overlapping can be formed as example perpendicular to solar-electricity Thickness on the direction of pond is more than or waits in the thermal conductivity on solar cell direction less than or equal to about 50 micron In about 1.5W/ (m-K).
Relative motion between the solar cell engaged in order to prevent with it by interconnection piece causes problem, and being used for will The conductive adhesive that interconnection piece is joined to solar cell can pass through selection to be formed between solar cell and interconnection piece Conductibility engagement, conductibility engagement is sufficiently rigid, to force temperature range of the interconnection piece at about -40 DEG C to about 180 DEG C The interior thermal expansion mismatch reconciled between solar cell and interconnection piece makes the thermal expansion mismatch be unlikely to damage solar energy module. This conductive adhesive can pass through selection to form conductibility engagement, and the conductibility is bonded under standard test condition The modulus of shearing of (that is, 25 DEG C) be greater than or equal to about 1800MPa, greater than or equal to about 1900MPa, be greater than or equal to About 2000MPa, greater than or equal to about 2100MPa, greater than or equal to about 2200MPa, greater than or equal to about 2300MPa, be more than or Equal to about 2400MPa, greater than or equal to about 2500MPa, greater than or equal to about 2600MPa, greater than or equal to about 2700MPa, big In or equal to about 2800MPa, greater than or equal to about 2900MPa, greater than or equal to about 3000MPa, greater than or equal to about 3100MPa, greater than or equal to about 3200MPa, greater than or equal to about 3300MPa, greater than or equal to about 3400MPa, be more than or wait In about 3500MPa, greater than or equal to about 3600MPa, greater than or equal to about 3700MPa, greater than or equal to about 3800MPa, be more than Or equal to about 3900MPa or greater than or equal to about 4000MPa.In such variations, for example, interconnection piece can be born greatly In or equal to about 40 microns interconnection piece thermally expand or be heat-shrinked.Suitable conductive adhesive may include such as Hitachi CP-450 and solder.
Therefore, the conductibility engagement between the adjacent solar battery being overlapped in superbattery and superbattery and flexibility Conductibility engagement between electrical interconnection can utilize different conductive adhesives.For example, superbattery and flexible electrical interconnection Between conductibility engagement can be formed by solder, and be overlapped adjacent solar battery between conductibility engagement can be by non-weldering Material conductive adhesive is formed.In some variations, two kinds of conductive adhesives can be solid by single processing step Change, such as in about 150 DEG C to about 180 DEG C of processing window.
It is described above be absorbed in multiple solar cells are assembled in a manner of stacking on a common substrate (can be to cut out Solar cell).This leads to the formation of module.
However, in order to collect enough solar energy to be used, the multiple this moulds fitted together in itself need to be usually installed Block.According to multiple embodiments, multiple solar cell modules can also be used stacking mode and assemble, to promote the area of array Efficiency.
In certain embodiments, the feature of module may be to have top conduction on the direction towards solar energy Welding, and there is bottom conductive welding on the direction back to solar energy.
Bottom welding is embedded in below battery.Therefore, bottom welding does not stop incident light, does not also negatively affect module Area efficiency.In contrast, top welding exposes, it is possible that can stop incident light, so negatively affect efficiency.
According to multiple embodiments, module itself can cover so that top welding is covered by adjacent module.This stacking Formula module structure can also provide additional areas for installing other elements, without negatively affecting module array in module Final exposed area.The example for the module component that may be provided in overlapping region may include but be not limited to terminal box and/or total Wire bonding band.
In certain embodiments, the terminal box of corresponding adjacent stacking formula module is in pairing arrangement, to realize it Between electrical connection.This eliminates wiring, so simplify the construction of the array of stacking formula module.
In certain embodiments, terminal box can be reinforced and/or group therewith with additional structural Self-Clinching Standoffs It closes.This construction can generate integrated tilt module roof mounting bracket solution, and the wherein size of terminal box determines to tilt Degree.Array to that will cover formula module is mounted on roofdeck, and this embodiment may be particularly useful.
Stacking formula superbattery is used in module placement, is that module level electric power controller is installed (for example, DC/AC is micro- Inverter, DC/DC modular powers optimizer, voltage intelligent switch and relevant apparatus) provide unique chance.Module level Power management system is characterized in power optimization.The superbattery for being such as described herein and using can be generated than traditional panel higher Voltage.In addition, superbattery module placement can also be by module subregion.Voltage increases, subregion increases, these are all optimization work( The potential benefit of rate.
Subject description discloses the high-efficiency solar module (that is, solar panel) including narrow rectangle silicon solar cell, The silicon solar cell is arranged in a manner of covering and is electrically connected in a series arrangement, to form superbattery, wherein super electricity Pond is arranged to the row of physical parallel in solar energy module.For example, the length of superbattery can be substantially across solar energy The overall length or overall with of module, alternatively, two or more superbatteries can be arranged to it is end-to-end in a row.Each super electricity Pond may include any amount of solar cell, in some variations, including at least 19 solar cells, and For example, in certain variations, it is greater than or equal to 100 silicon solar cells.Each solar energy module can have conventional Size and shape, and further include hundreds of silicon solar cells, to allow the superbattery in single solar energy module into Row is electrically interconnected, in order to provide for example, about 90 volts (V) to about 450V or direct current (DC) voltage of bigger.
As described further below, it before being converted to AC by inverter, is boosted to DC-DC by eliminating or reducing The needs of (D/C voltage raising), this high D/C voltage contribute to through inverter (for example, micro- inversion on solar energy module Device) it is converted into exchanging (AC) from direct current.As also described below to further describe, high D/C voltage also promotes use by central inverter The arrangement of DC/AC conversions is executed, the central inverter receives two or more high voltages from the electrical connection that is connected in parallel to each other The high voltage DC of stacking formula solar cell module exports.
Turning now to attached drawing, to understand the solar energy module described in this specification in more detail, Fig. 1 is shown The viewgraph of cross-section for a string of the solar cells 10 arranged in a manner of stacking, being connected in series with, the wherein end of adjacent solar battery Portion is overlapped and is electrically connected, to form superbattery 100.Each solar cell 10 include semiconductor diode structure and It is connected to the electric contact of semiconductor diode structure, the electric current that solar cell 10 wherein generates when being irradiated by light can pass through this A little electric contacts and be supplied to external loading.
In the example of this specification description, each solar cell 10 is rectangular crystal silicon solar cell, tool There are front surface (day side) metallization pattern and back surface (in the shade side) metallization pattern, front surface metallization pattern to be arranged in n On the semiconductor layer of type electric conductivity, back surface metallization pattern is arranged on the semiconductor layer of p-type conductivity, these metallization Pattern provides electrical contact for the opposite sides of n-p junction.However, if applicable, other materials system, two poles can be used Pipe structure, physical size or electrical contact arrangement.For example, preceding (day side) surface metalation pattern may be provided at p-type conductibility Semiconductor layer on, rear (in the shade side) surface metalation pattern may be provided on the conductive semiconductor layer of n types.
Referring again to Fig. 1, in superbattery 100, adjacent solar battery 10 is at them by conductive bonding material reality It is conductively joined in the region being now overlapped each other, the conductive bonding material is golden by the front surface of a solar cell Categoryization pattern is electrically connected to the rear surface metallization pattern of adjacent solar battery.Suitable conductive bonding material may include example Such as electroconductive binder, electrically conductive adhesive film and strip of conductive adhesive and general solder.
Fig. 2 shows the exemplary rectangular solar energy module 200 for including six rectangle superbatteries 100, each rectangle is super The length of the long side for being approximately equal to the length to solar energy module of grade battery.Superbattery is arranged to six parallel rows, long side The long side for being parallel to module is orientated.The solar energy module of like configurations may also comprise the superbattery of this length of side, but its number of rows It is more than number of rows shown in the example or few.In other variations, the respective length of superbattery may be approximately equal to rectangle The length of the short side of solar energy module, and the superbattery is arranged to parallel row, wherein they long side it is parallel It is orientated in the short side of module.In other other arrangements, each row may include series electrical interconnection two or more are super Battery.The long side that the short side and length that module can be for example, about 1 meter with length are for example, about 1.5 to about 2.0 meters. Can be that solar energy module selects any other suitable shape (for example, square) and size.
In some variations, the conductibility between the solar cell of overlapping engages provides machinery for superbattery Plasticity, within the temperature range of about -40 DEG C to about 100 DEG C, reconcile and be parallel to super electricity on the direction of superbattery row Thermal expansion mismatch between pond and the glass front plate of solar energy module makes the thermal expansion mismatch be unlikely to damage solar energy module.
Each superbattery in shown example includes 72 rectangle solar cells, each rectangle solar cell Width is equal or approximately equal to the 1/6 of the 156mm squares of stock size or the width of dead square silicon wafer, and length Equal or approximately equal to square or the width of pseudo-square wafers.In addition, in general, solar energy module as described herein The length of the middle rectangle silicon solar cell used can for example be equal or approximately equal to the square or accurate square of stock size The width of shape silicon wafer, and its width is for example equal or approximately equal to the square or pseudo-square wafers of stock size The 1/M of width, wherein M are≤20 any integers.M can be such as 3,4,5,6 or 12.M can also be more than 20.Superbattery It may include this any appropriate number of class rectangle solar cell.
Superbattery in solar energy module 200 can be by electrical interconnection (optionally, flexible electrical interconnection) or as follows Module level power electronic device interconnected in series described in text, the solar energy module will pass through stock size are provided than conventional electricity Higher voltage is pressed, because the stacking method described just now makes each module incorporate than conventional much more battery.For example, Include that may include more than 600 too by the stock size solar energy module of superbattery that 1/8 cutting silicon solar cell forms Positive energy cell/module.In contrast, include the stock size solar energy module of stock size and the silicon solar cell of interconnection Generally include about 60 solar cell/modules.In conventional silicon solar module, square or dead square solar energy Battery is usually interconnected by brazing band, and is separated from each other to accommodate interconnection piece.In this case, just by stock size Rectangular or pseudo-square wafers are cut into the total amount that narrow rectangle will reduce mould effective solar-electricity pool area in the block, to reduce Modular power, since it is desired that interconnection piece between additional battery.In contrast, in solar energy module disclosed herein, formula is covered Electrical interconnection between battery is hidden in the lower section of effective solar-electricity pool area by arrangement.Therefore, solar energy as described herein Module can provide high output voltage in the case where not reducing module output power, because of modular power and solar energy module In solar cell quantity (interconnection piece between required battery) between there are very little compromise or there is no compromise.
When all solar cells are connected in series with, for example, covering formula solar cell module as described herein can be with D/C voltage in the range of about 90 volts to about 450 volts or bigger is provided.As described above, this high D/C voltage may be advantageous 's.
For example, the micro- inverter being arranged on or near solar energy module can be used for module level power optimization and DC is arrived The conversion of AC.Referring now to Figure 49 A to Figure 49 B, usual micro- inverter 4310 is received from single solar energy module 4300 25V to 40V DC is inputted, and exports 230V AC outputs, with the power grid of matching connection.Micro- inverter generally includes two mainly Component：DC/DC boosts and DC/AC inversions.DC/DC boostings are led to for increasing the DC bus voltages needed for DC/AC conversions Often sufficiently expensive and loss is very big (2% loss in efficiency).Since solar energy module as described herein provides high voltage output, because This can reduce or eliminate the needs (Figure 49 B) to boost to DC/DC.This can reduce cost and increase solar energy module 200 Efficiency and reliability.
In the conventional arrangement of the heart (" serial type ") inverter in use rather than micro- inverter, conventional low DC exports solar energy Module is electrically connected to one another in series and is electrically connected to serial type inverter.Single mould is equal to by the voltage that solar energy module string generates The summation of block voltage, because module is connected in series with.Allowable voltage range determines the minimum and maximum module number in string. Maximum module number is determined by module voltage and regulation voltage limits：For example, Nmax×Voc<600V (U.S.'s residential standard) or Nmax× Voc<1,000V (commercial standard (CS)).Minimum module quantity in string is by the minimum needed for module voltage and serial type inverter Voltage is operated to determine：Nmin×Vmp>VInvertermin.Serial type inverter (for example, Fronius, Powerone or SMA inverter) Required minimum operation voltage (VInvertermin) generally between about between 180V and about 250V.In general, serial type inverter is best It is about 400V to operate voltage.
Single high D/C voltage covers formula solar cell module and can generate than needed for serial type inverter as described herein Minimum operation voltage bigger voltage, and optionally at or approximately at the optimum operation voltage of serial type inverter.Therefore, High D/C voltage as described herein covers formula solar cell module can be electrically connected to serial type inverter parallel to each other.This keeps away Exempt from the string length demand of module string being connected in series with, and this demand may be such that system design and installation complicate.In addition, In being connected in series in string for solar energy module, minimum current module is dominant, and if as the mould in different roofs pitch As block may occur or due to tree shade, the disparate modules in the string receive different irradiations, then system can not be grasped effectively Make.Parallel high-voltage module configuration as described herein can also avoid these problems, because across the electricity of each solar energy module Stream is independently of the electric current across other solar energy modules.In addition, this arrangement does not need module level power electronic device, and Therefore it can improve the reliability of solar energy module, solar energy module is being deployed in the variations on roof especially by this It is important.
Referring now to Figure 50 A to Figure 50 B, as described above, superbattery can extend generally the entire of solar energy module Length or width.In order to realize the electrical connection of the length along superbattery, (in terms of the front view) electricity hidden can be tapped Point is integrated into solar energy module construction.Electric lead can be by being connected to by this in the end of superbattery or centre position The back surface of solar cell metallizes to realize.Such hiding tap allows the electricity segmentation of superbattery, and makes The segmentation of superbattery or superbattery can be interconnected to bypass diode, module level power electronic device (for example, micro- inverse Become device, power optimization device, voltage intelligent switch and relevant apparatus) or other component.The use of hiding tap exists In No.62/081,200 U.S. Provisional Applications, 62/133,205 U.S. Provisional Applications of No. and No.14/674,983 U. S. applications It further describes, being incorporated by reference for each in these provisional applications is incorporated herein.
In the example of Figure 50 A (example physical layout) and Figure 50 B (exemplary circuit schematic diagram), shown solar energy mould Block 200 includes respectively six superbatteries 100, and the superbattery is electrically connected in series to provide high D/C voltage.Each super electricity 4400 electricity of tap that pond is hidden is segmented into several groups solar cell, wherein every group of solar cell and different bypasses The electrical connection in parallel of diode 4410.In these examples, bypass diode is arranged in solar energy module laminate structures, that is, too In encapsulant of the positive energy battery between front surface transparent panel and back plate.Alternatively, bypass diode can be arranged in place It is interconnected to hiding tap in the terminal box in the rear surface of solar energy module or edge, and by conducting wire wiring.
In the example of Figure 51 A (physical layout) and Figure 51 B (corresponding electrical schematic diagram), shown solar energy module 200 Including six superbatteries 100, the superbattery is electrically connected in series to provide high D/C voltage.In this example, solar energy mould Block is segmented into three pairs of superbatteries being connected in series with by electricity, wherein each pair of superbattery and different bypass diodes electricity in parallel Connection.In this example, bypass diode is arranged in the terminal box 4500 on the back surface of solar energy module.Bypass Diode can be alternatively positioned in solar energy module laminate structures or in the terminal box that edge is installed.
In the example of Figure 50 A to Figure 51 B, in the normal operating of solar energy module, each solar cell is positive Bias, and therefore all bypass diodes are all reverse-biased and non-conducting.However, if one or more of one group solar energy Battery arrives sufficiently high voltage by reverse-biased, then the bypass diode corresponding to the group will be opened, and across the electric current of module Reverse-biased solar cell will be bypassed.This will prevent from forming dangerous heat in masking or failure solar cell Point.
Alternatively, bypass diode function can be in the module level power electricity being arranged on or near solar energy module It is completed in sub- device (such as micro- inverter).(module level power electronic device and its using being referred to as module level herein Electric power controller or system and module level power management).This kind of module grade power electricity optionally integrated with solar energy module Sub- device can optimize every in the superbattery from superbattery group, from each superbattery or from electricity segmentation The power of a independent superbattery segmentation at best power point (for example, by operating superbattery group, superbattery or surpassing The segmentation of grade battery), it is enable to carry out discrete power optimization in module.Module level power electronic device can be eliminated To the needs of any bypass diode in module, because power electronic device can decide when to bypass entire module, specific Superbattery group, one or more specific individually superbatteries, and/or one or more particular super battery segmentations.
For example, this can intelligently be completed by integrating voltage on module level.By monitoring in solar energy module too The voltage output of positive energy battery circuit (for example, one or more superbatteries or superbattery segmentation), " intelligent switch " electricity Source control device can determine whether the circuit includes reverse-biased any solar cell.If detecting the presence of the reverse-biased sun Can battery, then electric power controller (for example) relay switch or other component just can be used, by corresponding circuit from electric system It disconnects.For example, if the voltage of the solar cell circuit of monitoring drops below predetermined threshold, electric power controller The circuit (open circuit) will be cut off.Compared with the normal operating of circuit, predetermined threshold can be such as certain percentage or amplitude (for example, 20% or 10V).Such voltage can intelligently be merged into existing module grade power electronic device product (for example, coming from Enphase Energy companies, Solaredge Technologies companies, Tigo Energy companies) in or pass through customization Circuit design is implemented.
Figure 52 A (physical layout) and Figure 52 B (corresponding electrical schematic diagram) are shown for including covering formula superbattery One exemplary architecture of the module level power management of high voltage solar energy module.In this example, rectangle solar energy module 200 include the six rectangles stacking formula superbattery 100 for being arranged to six rows, and six row extends the long side of solar energy module Length.Six superbatteries are electrically connected in series, to provide high D/C voltage.Module level power electronic device 4600 can be directed to whole A module is converted to execute voltage sensor, power management and/or DC/AC.
Figure 53 A (physical layout) and Figure 53 B (corresponding electrical schematic diagram) are shown for including covering formula superbattery Another exemplary architecture of the module level power management of high voltage solar energy module.In this example, rectangle solar energy module 200 include the six rectangles stacking formula superbattery 100 for being arranged to six rows, and six row extends the long side of solar energy module Length.Six superbatteries assemble three pairs of superbatteries being connected in series with by electricity.Each pair of superbattery is individually connected to module Grade power electronic device 4600, so as to execute voltage sensor and power optimization on each pair of superbattery, will be in them Two or more be connected in series to provide high D/C voltage, and/or execute DC/AC conversion.
Figure 54 A (physical layout) and Figure 54 B (corresponding electrical schematic diagram) are shown for including covering formula superbattery Another exemplary architecture of the module level power management of high voltage solar energy module.In this example, rectangle solar energy module 200 include the six rectangles stacking formula superbattery 100 for being arranged to six rows, and six row extends the long side of solar energy module Length.Each superbattery is individually connect with module level power electronic device 4600, so as to be held on each superbattery Two of which or more is connected in series to provide high D/C voltage, and/or execution by row voltage sensor and power optimization DC/AC is converted.
Figure 55 A (physical layout) and Figure 55 B (corresponding electrical schematic diagram) are shown for including covering formula superbattery Another exemplary architecture of the module level power management of high voltage solar energy module.In this example, rectangle solar energy module 200 include the six rectangles stacking formula superbattery 100 for being arranged to six rows, and six row extends the long side of solar energy module Length.4400 electricity of tap that each superbattery is hidden is segmented into the solar cell of two or more groups.Each obtain Solar battery group individually connect with module level power electronic device 4600, so as in each solar battery group Voltage sensor and power optimization are executed, multiple groups are connected in series to provide high D/C voltage, and/or executes DC/AC conversions.
In some variations, two or more high voltage DCs as described herein cover formula solar cell mould Block is electrically connected in series to provide high voltage DC output, and the output is converted into AC by inverter.For example, inverter can be with An integrated micro- inverter in solar energy module.In this case, micro- inverter can optionally be same executes such as The component of the module level power management electronics of additional sensing and linkage function described above.Alternatively, inverter can To be center " serial type " inverter, as further discussed below.
As shown in figure 56, when stringing together superbattery in series in solar energy module, the superbattery of adjacent row It can in a staggered manner be slightly offset along their long axis.It is this staggeredly to allow the adjacent end portion that superbattery is arranged by connecing It closes to the top of a superbattery and is joined to the interconnection piece 4700 of bottom of another superbattery and is electrically connected in series, simultaneously It saves module region (space/length) and simplifies manufacture.For example, the superbattery of adjacent row can deviate about 5 millis Rice.
On different heat expansion and solar cell and interconnection piece between electrical interconnection 4700 and silicon solar cell To stress can cause rupture and other failure modes, so as to reduce the performance of solar energy module.Therefore, it is necessary to interconnect Part is flexible and is configured to reconcile such different expansion in the case where not forming significant stress.For example, by by High ductile material (for example, soft copper, scale copper) is formed, by low coefficient of thermal expansion materials (for example, Covar (Kovar), because Watt alloy (Invar) or other low thermal coefficient of expansion iron-nickel alloys) it is formed, or by the thermal expansion system with substantially matching silicon Number, incorporate reconcile the different heat expansion between interconnection piece and silicon solar cell plane in geometry expansion characteristics (such as, Slit, groove, hole or truss structure) and/or using geometric properties (such as, torsion outside the plane of the such different heat expansion of reconciliation Knot, jog or scrobicula) material formed, interconnection piece can provide stress and thermally expand and eliminate.The conductive portion of interconnection piece There can be for example, less than about 100 microns, less than about 50 microns, the thickness less than about 30 microns or less than about 25 microns, with Increase the flexibility of interconnection piece.(usually existing low current makes it possible for thin flexible conductor weldering in these solar energy modules Band, without generating excessive power attenuation because of the resistance of thin interconnection piece).
In some variations, the conductibility between superbattery and flexible electrical interconnection, which engages, forces flexible electrical mutual The thermal expansion that even part is reconciled within the temperature range of about -40 DEG C to about 180 DEG C between superbattery and flexible electrical interconnection is lost Match, the thermal expansion mismatch is made to be unlikely to damage solar energy module.
Fig. 7 A (as discussed above) show that several exemplary interconnection pieces that geometric properties are eliminated using plane stress are matched It sets, is indicated by reference label 400A-400T, and Fig. 7 B-1 and Fig. 7 B-2 (same as discussed above) are shown using plane External carbuncle eliminates the exemplary interconnection piece configuration of geometric properties, is indicated by reference label 400U and 3705.These are disappeared using stress Any of interconnection piece configuration except feature or any combinations may adapt to superbattery series electrical interconnection to provide height D/C voltage, as described herein.
Discussion about Figure 51 A to Figure 55 B concentrates on module level power management, wherein by module level power electronic device The possibility DC/AC conversions for carrying out high DC module voltages, are exported with providing the AC from module.As described above, as described herein From cover formula solar cell module high D/C voltage DC/AC conversion can alternatively be held by center serial type inverter Row.For example, Figure 57 A schematically show photovoltaic system 4800, which includes that multiple high D/C voltages cover the formula sun Can battery module 200, the solar cell module bears bus 4820 and the positive bus of high D/C voltage 4810 via high D/C voltage It is connected in parallel to each other and is electrically connected to serial type inverter 4815.In general, each solar energy module 200 includes multiple stacking formula superbatteries, The superbattery is electrically connected in series to provide high DC voltages, as described above with electrical interconnection.For example, solar energy module 200 The bypass diode arranged as described above can be optionally included.Figure 57 B show showing for the photovoltaic system 4800 on roof Example property deployment.
In some variations of photovoltaic system 4800, high D/C voltage cover two of formula solar cell module or More short strings that are connected in series with can be electrically connected with serial type inverter parallel.Referring again to Figure 57 A, for example, each solar energy mould Block 200 could alternatively be two or more high D/C voltages and cover being connected in series with for formula solar cell module 200.In this way Do may be in order to which the voltage for being for example provided to inverter while deferring to supervision standard maximizes.
Conventional solar energy module generally produces about 8 amperes of Isc (short circuit current), about 50Voc (open-circuit voltage) and about 35Vmp (maximum power point voltage).As discussed above, include M times of solar cell of conventional amounts as described herein High D/C voltage covers formula solar cell module and substantially generates M times higher than conventional solar energy module of voltage and conventional solar energy The electric current of the 1/M of blocks current, wherein the area of each solar cell is the about 1/M of the area of conventional solar cell.Such as Described above, M can be any suitable integer, usually≤20, but can be more than 20.M can be such as 3,4,5,6 or 12.
If M=6, the Voc that formula solar cell module is covered for high D/C voltage can be for example, about 300V.It will Two this kind of module are connected in series with can provide about 600V DC for bus, to defer to the maximum set value of U.S.'s residential standard. If M=4, the Voc that formula solar cell module is covered for high D/C voltage can be for example, about 200V.It is such by three Block coupled in series connection can provide about 600V DC for bus.If M=12, formula solar cell is covered for high D/C voltage The Voc of module can be for example, about 600V.It can also be by system configuration at the bus voltage less than 600V.In such modification In form, high D/C voltage covers formula solar cell module can be for example in header box in pairs or triplets or to appoint What he suitably combines connection, to provide optimum voltage for inverter.
The problem of configured in parallel for covering formula solar cell module by above-mentioned high D/C voltage is brought is：If one Solar energy module has short circuit, then other solar energy modules may interrupt the power on short block (that is, driving current Power in short block and the short block that dissipates) and generate danger.For example, preventing it by using being arranged to His module drive electric current passes through the blocking diode of short block, using current-limting fuse or combined use current-limting fuse and resistance Diode is flowed, it can be to avoid this problem.Figure 57 B are schematically shown covers formula solar cell module in high D/C voltage Two current-limting fuses 4830 are used on 200 plus end and negative terminal.
Blocking diode and/or the protection arrangement of fuse can depend on whether inverter includes transformer.Using including Negative conductor is usually grounded by the system of the inverter of transformer.It is not led negative usually using the system of transformerless inverter Line is grounded.For transformerless inverter, preferably the plus end of current-limting fuse and solar energy module can be in line, and And another current-limting fuse is in line with negative terminal.
Blocking diode and/or current-limting fuse can for example with each module in terminal box or in module laminate structures It puts together.Suitable terminal box, blocking diode (for example, embedded blocking diode) and fuse are (for example, embedded Fuse) it may include deriving from those of Shoals Technology Group companies.
Figure 58 A show that the exemplary high voltage DC including terminal box 4840 covers formula solar cell module, wherein hindering Stream diode 4850 and the plus end of solar energy module are in line.Terminal box does not include current-limting fuse.This configuration can be preferred Ground is used in combination with one or more current-limting fuses, the current-limting fuse (for example, in header box) and solar energy mould elsewhere The plus end and/or negative terminal of block are in line (for example, with reference to following Figure 58 D).Figure 58 B are shown including terminal box 4840 Exemplary high voltage DC cover formula solar cell module, the wherein plus end Cheng Zhi of blocking diode and solar energy module Line, and current-limting fuse 4830 is in line with negative terminal.Figure 58 C show the exemplary high voltage DC including terminal box 4840 Stacking formula solar cell module, wherein current-limting fuse 4830 and the plus end of solar energy module are in line, and another current limliting Fuse 4830 is in line with negative terminal.Figure 58 D are shown including being configured to the terminal box 4840 as shown in Figure 58 A and being located at The exemplary high voltage DC stacking formula solar cell module of fuse outside terminal box, the fuse and solar energy module Plus end and negative terminal are in line.
Referring now to Figure 59 A to Figure 59 B, as the replacement of above-mentioned configuration, formula solar energy is covered for all high D/C voltages The blocking diode and/or current-limting fuse of battery module can be together placed in header box 4860.In these variations In, one or more individual conductors individually extend to header box from each module.As shown in Figure 59 A, in a kind of selection, one The single conducting wire of a polarity (for example, negative polarity as shown in the figure) shares between all modules.In another kind selection (figure In 59B), two polarity have the individual conductor for each module.Although Figure 59 A to Figure 59 B are illustrated only positioned at confluence Fuse in case 4860, but any appropriate combination of fuse and/or blocking diode each may lie in header box.In addition, example Such as, the electricity of such as other functions of monitoring, MPPT maximum power point tracking and/or disconnection of separate modular or module group etc is executed Sub- device can be implemented in header box.
When one or more of solar energy module solar cell is blocked or otherwise generates low current, The reverse-biased operation of solar energy module can occur, and solar energy module can be handled in driving than low current solar cell Electric current bigger electric current pass through low current solar cell voltage and current point under operate.Reverse-biased solar cell may Meeting heating simultaneously forms unsafe conditions.For example, as shown in Figure 58 A, by the way that suitable operation voltage, high DC electricity is arranged for inverter The parallel arrangement of laminated lid formula solar cell module can make module be protected and from reverse-biased operation.This for example by Figure 60 A to Figure 60 B are shown.
Figure 60 A show the electric current for being connected in parallel string and electricity that formula solar energy module is covered for about ten high D/C voltage The curve graph 4870 and power of pressure and the curve graph 4880 of electric current.It does not include reverse-biased that these curves, which are for solar energy module, What the model of solar cell calculated.Since solar energy module parallel connection is electrically connected, all of which operation electricity having the same It presses and their electric current is added.In general, inverter will change the load on circuit, to probe into power vs. voltage curve, to know Maximum point not on the curve, then at this point operation module circuit to maximize output power.
In contrast, it includes one or more reverse-biased that Figure 60 B, which are shown for some in the solar energy module in circuit, The case where solar cell, the electric current and the curve graph 4890 and power of voltage and the song of voltage of the model system for Figure 60 A Line chart 4900.Reverse-biased module is revealed by forming knee shape in exemplary current voltage curve, wherein from down to about About 10 amperes of operations under 210 volts of voltage are transitioned into about 16 amperes of operations under the voltage below about 200 volts.Below about At 210 volts of voltage, the module being blocked includes reverse-biased solar cell.Reverse-biased module also by there are two maximum values and It is revealed in power vs. voltage curve：Maximum value under about 200 volts and the local maximum under about 240 volts. Inverter may be configured to identify such mark of reverse-biased solar energy module, and the absolute or office reverse-biased in no module Solar energy module is operated under portion's maximum power point voltage.In the example of Figure 60 B, inverter can be in local maximum power point Locate operation module, to ensure that no module is reverse-biased.Additionally or alternatively, can be that inverter selects minimum operation Voltage, when less than the minimum operation voltage, any module will be less likely reverse-biased.Based on other parameters (such as environment temperature Degree, operation electric current and calculating or the solar energy module temperature measured) and other information (such as spoke that is received from external source Illumination), the minimum operation voltage can be adjusted.
In some embodiments, high D/C voltage solar energy module itself can cover, and wherein adjacent solar cell modules are with portion The mode of overlapping is divided to arrange and be optionally electrically interconnected in their overlapping region.Such stacking formula configuration can be optionally High voltage solar energy module for the electrical connection in parallel for providing high D/C voltage for serial type inverter, or for including respectively The high voltage solar energy module of micro- inverter, it is defeated that the high D/C voltage of solar energy module is converted into AC modules by micro- inverter Go out.For example, a pair of of high voltage solar energy module can cover as just mentioned, and it is electrically connected in series with needed for offer D/C voltage.
Conventional serial type inverter usually requires have quite wide in range potential input voltage range (or " dynamic range "), This is because 1) they must be compatible with it is different be connected in series with module string length, 2) some modules in string can by completely or The variation of partial occlusion and 3) environment temperature and radiation can change module voltage.Using parallel configurations as described herein System in, the length for the solar energy module string being connected in series with does not interfere with voltage.In addition, partly being hidden for some modules Keep off and some modules the case where not being blocked, in that case it can be decided that under the voltage for the module not being blocked operating system (for example, As described above).Therefore, the input voltage range of the inverter in parallel configurations system may only need the 3rd factor of reconciliation " dynamic range " of (that is, temperature and radiation variation).Since this is fewer, for example, inverter needs the pact of conventional dynamic range 30%, thus as described herein the inverter used in parallel configurations systems can have relatively narrow MPPT (maximum power point with Track) range, such as between about 175 volts under about 250 volts under standard conditions and high temperature and Low emissivity, such as be situated between (in this case, 450 volts of MPPT are grasped between about 450 volts under standard conditions and about 350 volts under high temperature and Low emissivity It can correspond to the V under 600 volts in minimum temperature operationOC).In addition, as described above, inverter can receive enough D/C voltage, to be directly changed into AC in the case of no boost phase.Therefore, parallel configurations system as described herein System serial type inverter used can it is simpler, cost is lower, and with than serial type inverter higher used in legacy system Efficiency operation.
For high-voltage direct-current as described herein cover formula solar cell module used in micro- inverter and serial type it is inverse Become device, the DC in order to eliminate inverter boosts needs, and preferably (or the short of solar energy module is connected in series with by solar energy module String) it is configured to provide operation (for example, maximum power point Vmp) D/C voltage of the peak to peak value higher than AC.For example, being directed to 120V AC, peak to peak value are sqrt (2) * 120V=170V.Thus, for example, solar energy module may be configured to provide about 175V's Minimum Vmp.Vmp under standard conditions can be about 212V (assuming that negative voltage temperature coefficient is 0.35%, maximum operation temperature Degree is 75 DEG C), and the Vmp under minimum temperature operating condition (for example, -15 DEG C) will be about 242V, therefore Voc is below about 300V (depends on module fill factor).For split-phase 120V AC (or 240V AC), all these numbers all double, and this It is more convenient, because 600V DC are the maximum values that the U.S. allows in many residential applications.For business application, need Higher voltage is wanted and permits, these numbers can further increase.
High voltage as described herein covers formula solar cell module and may be configured to> 600VOCOr>1000VOC Lower operation, in this case, module may include that the external voltage for preventing module from providing is more than the integrated power electricity of code requirement Sub- device.This arrangement can to operate VmpIt is sufficiently used for split-phase 120V (240V needs about 350V), and when more than 600V At low temperature without VOCThe problem of.
When the connection of building and power grid is disconnected, for example, when being disconnected by fireman, it, will if the sun is irradiating (for example, on building roof) solar energy module that electric power is provided to building can still generate electricity.This will produce following ask Topic：After building and power grid disconnect, such solar energy module may make roof " electrification " with dangerous voltage. In order to solve this problem, high-voltage direct-current as described herein covers formula solar cell module and can optionally include for example In module terminal box or the disconnecting unit of proximity modules terminal box.The disconnecting unit can be such as physics disconnecting unit or solid-state Disconnecting unit.Disconnecting unit may be configured to such as " normally closed " so that when losing certain signals (for example, coming from inverter), it It will disconnect the high voltage output of the solar energy module from roof circuit.Communication with disconnecting unit can for example pass through high voltage Cable by individual conducting wire or wireless is realized.
The remarkable advantage of stacking for high voltage solar energy module be solar cell in stacking formula superbattery it Between thermal diffusion.It has been found by the applicant that heat can be easy to be transmitted through adjacent overlapping silicon solar electricity along silicon superbattery The relatively thin not only conductive but also engagement of heat conduction between pond.Perpendicular to the front surface and rear surface of solar cell measure by leading The thickness for electrically engaging the conductive bond between the adjacent overlapping solar cell of material formation can e.g., less than or equal to about 200 microns or less than or equal to about 150 microns or less than or equal to about 125 microns or less than or equal to about 100 microns, Or or less than or equal to about 90 microns or less than or equal to about 80 microns less than or equal to about 70 microns or be less than or equal to About 60 microns or less than or equal to about 50 microns or less than or equal to about 25 microns.This relatively thin engagement reduces battery Between interconnection at resistance loss, and further promote from from the superbattery that may be formed during operation appoint What hot spot along superbattery hot-fluid.The thermal conductivity of engagement between solar cell can be greater than or be equal to about 1.5W/ (m-K).In addition, the rectangular aspect ratio of usually used solar cell provides between adjacent solar battery herein The elongated area of thermo-contact.
In contrast, using in the conventional solar energy module of band-like interconnection piece between adjacent solar battery, one too The heat generated in positive energy battery not readily passes through band-like interconnection piece and is diffused into mould other solar cells in the block.This makes Hot spot is more readily formed than solar energy module as described herein in conventional solar energy module.
In addition, the electric current of the solar cell in solar energy module as described herein is usually less than normal across a string The electric current for advising solar cell, because superbattery as described herein is usually formed by stacking formula rectangle solar cell, each Rectangle solar cell has the effective coverage for being less than (for example, 1/6) conventional solar cell.
Therefore, it in solar energy module disclosed herein, dissipates in reverse-biased solar cell under breakdown voltage Heat is less, and heat may be susceptible to diffuse through superbattery and solar energy module, without forming dangerous hot spot.
Several additional and optional features can make the high voltage solar energy mould for using superbattery as described herein Block is more tolerant to the heat to dissipate in reverse-biased solar cell.Gather for example, superbattery can be encapsulated in thermoplastic olefin (TPO) It closes in object.TPO encapsulants have more photo and thermal stability than standard ethylene-vinyl acetate (EVA) encapsulant.EVA once it is heated or It is irradiated by ultraviolet light, brown will be become, and current limliting battery is caused to generate hot issue.In addition, solar energy module can have Double glass structures, wherein the superbattery encapsulated is sandwiched between glass front plate and back glass.Such double glass structures make Solar energy module being capable of the safety operation at the higher temperature of temperature being resistant to than conventional polymer back plate.In addition, if in the presence of If terminal box, terminal box may be mounted on one or more edges of solar energy module, rather than in solar energy module Below, wherein terminal box by additional insulation layer be added to top mould solar cell in the block.
Therefore, applicants have recognized that, the high voltage solar energy module formed as described herein by superbattery can be with Using the bypass diode than conventional solar energy module much less, because the hot-fluid across superbattery can allow module to exist It is operated in the case that one or more solar cells are reverse-biased, without generating notable risk.For example, in some variations, Every 25 solar cells are used less than a bypass diode, 30 every in high voltage solar energy module as described herein Solar cell is used to be used less than a bypass diode, often less than a bypass diode, every 50 solar cells 75 solar cells are used uses less than one two poles of bypass less than a bypass diode, every 100 solar cells Pipe, or only single bypass diode or do not have bypass diode.
Referring now to Figure 61 A to Figure 61 C, the exemplary high voltage solar energy module using bypass diode is provided.When When a part for solar energy module is blocked, can the damage to module be prevented or reduced by using bypass diode.Needle 4700,10 superbatteries 100 of exemplary solar energy module shown in Figure 61 A are connected in series with.As shown, 10 super Grade battery arrangement is at parallel.Each superbattery contains 40 solar cells being connected in series with 10, wherein 40 solar energy Each in battery is formed by the 1/6 of square or dead square, as described herein.In normal unobstructed operation, electricity Stream is flowed into from terminal box 4716, flows through each in the superbattery 100 being connected in series with by conducting wire 4715, and then Electric current is flowed out by terminal box 4717.It is optionally possible to using single terminal box, rather than individually 4716 He of terminal box 4717, so that electric current returns to a terminal box.Example shown in Figure 61 A shows each superbattery about one The specific implementation of bypass diode.As shown, single bypass diode is at the point of the centre approximately along superbattery It is connected electrically between a pair of adjacent superbattery (for example, single bypass diode 4901A is connected electrically in the first superbattery The 22nd solar cell and the second superbattery in adjacent solar battery between, the second bypass diode 4901B electricity It is connected between the second superbattery and third superbattery, such).First string battery and last a string of batteries only have There is the approximately half of of solar cell quantity in the corresponding superbattery of each bypass diode.For example shown in Figure 61 A Son, each bypass diode only corresponds to 22 batteries in the first string battery and last a string of batteries.For high shown in Figure 61 A The quantity that the bypass diode of the variations of voltage solar energy module total (11) is equal to superbattery is additional other plus 1 Road diode.
For example, each bypass diode can be merged into flexible circuit.Referring now to Figure 61 B, it is shown two The expansion view of the bypass diode join domain of adjacent superbattery.The view of Figure 61 B is originated from non-sunny slope.As shown, Two solar cells 10 use on adjacent superbattery includes that the flexible circuit 4718 of bypass diode 4720 is electrically connected It connects.Flexible circuit 4718 and bypass diode 4720 are electrically connected using the engagement pad 4719 being located in solar cell rear surface To solar cell 10.(referring also to hereinafter in relation to the tap hidden is provided to side using hiding engagement pad Road diode is discussed further).Additional bypass diode electrical connection scheme can be used for reducing each bypass diode too Positive energy number of batteries.One example is shown in Figure 61 C.As shown, a bypass diode is approximately along superbattery Intermediate electrical is connected between each pair of adjacent superbattery.Bypass diode 4901A is connected electrically in the first superbattery and second Between adjacent solar battery on superbattery, bypass diode 4901B is connected electrically in the second superbattery and third is super Between adjacent solar battery on battery, bypass diode 4901C is connected electrically in third superbattery and the 4th superbattery On adjacent solar battery between, it is such.May include second group of bypass diode, to reduce in partial occlusion In the case of by the quantity of the solar cell of bypass.For example, bypass diode 4902A bypass diode 4901A with Middle point between 4901B is connected electrically between the first superbattery and the second superbattery, and bypass diode 4902B exists Middle point between bypass diode 4901B and 4901C is connected electrically between the second superbattery and third superbattery, It is such, to reduce the number of batteries of each bypass diode.Optionally, another group of bypass diode can be electrically connected It connects, to be further reduced the quantity for the solar cell that will be bypassed in the case of partial occlusion.Bypass diode Middle points of the 4903A between bypass diode 4902A and 4901B is connected electrically in the first superbattery and the second super electricity Between pond, it is super that middle points of the bypass diode 4903B between bypass diode 4902B and 4901C is connected electrically in second Between battery and third superbattery, to be further reduced the number of batteries of each bypass diode.This configuration is formed The nested configuration of bypass diode, to allow to bypass a small amount of battery pack during part is covered.Additional diode can be with It is electrically connected in this manner, until reaching the solar cell quantity needed for each bypass diode, for example, each bypass About 8, about 6, about 4 or about 2 solar cells of diode.In some modules, each bypass diode needs about 4 A solar cell.If desired, one or more of bypass diode shown in Figure 61 C can be incorporated into it is hiding soft In property interconnection piece, as shown in Figure 61 B.
Subject description discloses the cutting method of the cutting tool of solar cell and solar cell, the cutter Tool and cutting method can be used for square for example by stock size or dead square solar cell be divided into multiple narrow rectangles or The solar cell of substantial rectangular.These cutting tools and method the solar cell of stock size bottom surface with Applying vacuum between the support surface of bending, so that the support surface of the solar cell of stock size against bending is bent, from And solar cell is cut along previous ready quarter line drawing.The advantages of these cutting tools and cutting method is, it Need not be physically contacted with the upper surface of solar cell.Therefore, these cutting tools and method can be used for cutting the sun Can battery, the soft material and/or uncured material that can be physically contacted damage are included on the upper surface of the solar cell. In addition, in some variations, these cutting tools and cutting method may need the only bottom surface with solar cell Part contact.In such variations, these cutting tools and method can be used for cutting solar cell, the sun Include the soft material and/or uncured material that will not contact cutting tool in the multiple portions of the bottom surface of energy battery.
For example, a kind of method for manufacturing solar battery disclosed herein using cutting tool and method includes：One On each battery in the silicon solar cell of a or multiple stock sizes with laser mark one or more quarter line drawing, to Multiple rectangular areas are defined on silicon solar cell；Electroconductive binder grafting material is applied to one or more silicon sun In the multiple portions of the top surface of energy battery；And one or more silicon solar cells bottom surface with bending Applying vacuum between support surface so that the support surface of one or more silicon solar cells against bending is bent, and causes One or more silicon solar cells then obtain multiple rectangle silicon solar cells, each rectangular silicon along line drawing cutting is carved All position adjacent with long side on its front surface is arranged in some electroconductive binder grafting material on solar cell. Before or after being painted to solar cell progress laser incising, electroconductive binder grafting material can be applied to the silicon of stock size On solar cell.
Obtained multiple rectangle silicon solar cells can be arranged is in line, wherein adjacent rectangle silicon solar cell Long side is overlapped in a manner of covering, and a part for electroconductive binder grafting material is disposed there between.Conductive bonding material Can then cure, so as to by the engagement of the rectangle silicon solar cell of adjacent overlapping to being electrically connected in series each other and by them.This A process will form stacking formula " superbattery ", such as the patent application institute listed in " cross reference to related applications " above It states.
Turning now to attached drawing to more fully understand that cutting tool disclosed herein and method, Figure 20 A are schematically shown It can be used for carving the side view of the example devices 1050 for the solar cell cutting painted.In this device, carve paint it is normal Scale cun solar cell wafer 45 is carried the bending part by vacuum manifold 1070 by mobile porous belts 1060.Work as the sun Can battery wafer 45 by vacuum manifold bending part when, the vacuum that is applied by hole in porous belts is by solar cell The bottom surface of chip 45 is pulled towards vacuum manifold, to make solar cell be bent.It can be to the bending section of vacuum manifold Point radius of curvature R selected so that in this way by solar cell wafer 45 bending can by solar cell along Line drawing cutting is carved, rectangle solar cell 10 is formed.Rectangle solar cell 10 can be used for example in superbattery, such as Fig. 1 Shown in Fig. 2.Solar cell wafer 45 can be cut in this way, and having applied electroconductive binder without contact connects 45 top surface of solar cell wafer of condensation material.
Cutting can preferentially start (that is, in edge for solar cell 45) in the at one end for carving line drawing, such as By will carve line drawing be arranged to vacuum manifold θ at an angle so that for every carve line drawing for, one end is in the other end The bending part of vacuum manifold is reached before.As shown in Figure 20 B, for example, solar cell can be oriented such that it carves line drawing With the direction of travel of porous belts and angled with the bending cut portion of manifold, the manifold is perpendicular to porous belts Direction of travel is orientated.For another example, Figure 20 C show battery orientation at make its carve line drawing perpendicular to porous belts direction of travel, And the bending of manifold rive part be orientated to it is angled with the direction of travel of porous belts.
For example, cutting tool 1050 can use single mobile porous belts 1060, the mobile porous belts have perpendicular to The width of direction of travel, the width are approximately equal to the width of solar cell wafer 45.Alternatively, tool 1050 may include two It is a, three, four or more movement porous belts 1060, the mobile porous belts for example can parallelly be arranged side by side and Optionally it is separated from each other.Cutting tool 1050 can use single vacuum manifold, the vacuum manifold can be for example with vertical Directly in the width of the direction of travel of solar cell, which is substantially equal to the width of solar cell wafer 45.It is this true Empty manifold can be for example used together with the mobile porous belts 1060 of single entire width, such as with parallelly and arrange It sets and two or more the such porous belts being optionally separated from each other is used together.
Cutting tool 1050 may include parallelly being arranged side by side and two or more bendings for being separated from each other it is true Empty manifold, wherein every vacuum manifold curvature having the same.This arrangement can be for example more with the movement of single entire width Pore area 1060 is used together, or be parallelly arranged side by side and be optionally separated from each other two or more are such Porous belts are used together.For example, the tool may include the mobile porous belts 1060 for every vacuum manifold.In latter In arrangement, vacuum manifold and its corresponding mobile porous belts can be arranged only along two defined by the width of porous belts The bottom of a fillet contact solar cell chip.In this case, solar cell is in the bottom of solar cell wafer It may include the soft material that will not contact porous belts in the region on surface so that do not have to damage the wind of soft material in cutting process Danger.
Any suitable configurations of mobile porous belts and vacuum manifold can be used in cutting tool 1050.
In some variations, before being cut using cutting tool 1050, the solar cell wafer painted is carved 45 include uncured conductive adhesive grafting material and/or other soft materials at the top of it and/or in bottom surface.Too It is positive can battery wafer paint the application with soft material quarter and can be carried out by any order.
Figure 62 A schematically show another exemplary cutting tool 5210 similar to above-mentioned cutting tool 1050 Side view, and Figure 62 B show top view.In cutting tool 5210 in use, by solar energy is painted at the quarter of stock size Battery wafer 45 is placed on a pair of parallel porous belts 5230 spaced apart, and the porous belts are with constant speed a pair of right Parallel and spaced apart 5235 top of vacuum manifold answered is mobile.The usually curvature having the same of vacuum manifold 5235.Work as chip When travelling across cutting region 5235C above vacuum manifold with porous belts, pass through the vacuum pulled in bottom of wafer Power, chip surround by vacuum manifold bent support delimited cut radius be bent.When chip is curved around cut radius Qu Shi carves line drawing and becomes crackle, and the crackle divides the wafer into individual rectangle solar cell.As described further below, The curvature of vacuum manifold is arranged such that the rectangle solar cell of adjacent cutting is non-coplanar, and therefore, is cutting through After Cheng Fasheng, the edge of the rectangle solar cell of adjacent cutting does not contact each other.The rectangle solar cell of cutting can To be described below using several examples of any suitable method progressive unloading from porous belts, the method.In general, Discharging method is further separated from one another by the solar cell of adjacent cutting, to prevent them from being connect each other when then coplanar It touches.
Referring also to Figure 62 A to Figure 62 B, every vacuum manifold may include for example：Flat site 5235F, does not provide Vacuum provides low vacuum or high vacuum；Optional curve transition region 5235T provides low vacuum or high vacuum, Huo Zheyan Its length is transitioned into high vacuum from low vacuum；The cutting region 5235C of high vacuum is provided；And provide the relatively smaller part of low vacuum The cutting rear region 5235PC of diameter.Porous belts 5230 transport chip 45 to transitional region 5235T simultaneously from flat site 5235F It across the region, then transports in cutting region 5235C, wherein chip is cut, and the cutting sun that will then obtain The energy transport of battery 10 is left cutting region 5235C and is entered in cutting rear region 5235PC.
Flat site 5235F is usually operated in the case where chip 45 is tied to the low vacuum of porous belts and vacuum manifold enough. Vacuum herein can relatively low (or being not present), with reduce friction and therefore reduce needed for porous belts tension, this is because will Chip 45 is tied to flat surfaces and is easier than being tied to curved surface.Vacuum in flat site 5235F can be for example, about 1 to about 6 inch of mercury.
Transitional region 5235T provides transition curvature to cutting region 5235C from flat site 5235F.Transitional region One or more of 5235T radius of curvature is more than the radius of curvature in cutting region 5235C.For example, transitional region 5235T In bending can be an elliptical part, but any suitable bending can be used.Chip 45 is allowed to pass through transitional region 5235T with smaller Curvature varying close to cutting region 5235C, rather than from the direct transition of flat orientation in the 5235F of region To the cut radius in cutting region 5235C, help to ensure that the edge of chip 45 will not be promoted and breaking vacuum, promoted and Breaking vacuum may be such that the cut radius for being difficult to be tied to chip in cutting region 5235C.In transitional region 5235T Vacuum can it is for example identical as in cutting region 5235C, among region 5235F and 5235C or along region The transition between region 5235F and region 5235C of the length of 5235T.Vacuum in transitional region 5235T can be for example, about 2 to About 8 inches of mercury.
Cutting region 5235C can be with modified radius of curvature, or optionally has constant radius of curvature.This The constant radius of curvature of kind can be for for example, about 11.5 inches, about 12.5 inches or between about 6 inches and about 18 inches. Any suitable curvature range can be used, and can be based partially on chip 45 thickness and chip 45 in carve line drawing Depth and geometry select the curvature range.In general, chip is thinner, makes wafer bending and be enough that it is made to paint along quarter Radius of curvature needed for line rupture is shorter.For example, about 60 microns to about 140 microns of depth can be had by carving line drawing, but Any other suitably more shallow or deeper quarter line drawing depth can be used.In general, it is more shallow to carve line drawing, make wafer bending and foot So that it is shorter along the radius of curvature carved needed for line drawing rupture.Required song can also be influenced by carving the cross-sectional shape of line drawing Rate radius.Quarter line drawing with wedge shape or foot wedges can more effectively collect than the quarter line drawing with round or rounded bottom Middle stress.More effectively the quarter line drawing of concentrated stress allows the radius of curvature in cutting region need not be as being less effective The quarter line drawing of ground concentrated stress is small like that.
The vacuum being at least used in the cutting region 5235C of a vacuum manifold in two parallel vacuum manifolds is usual It is higher than in other regions, to ensure that chip is suitably tied to cutting radius of curvature, to maintain constant bending stress.Appoint Selection of land, and as further described, in the region, a manifold can provide than another higher vacuum of manifold, with Just it preferably controls along the rupture for carving line drawing.Vacuum in cutting region 5235C can be for example, about 4 to about 15 inches of mercury, Or about 4 to about 26 inch of mercury.
Cutting rear region 5235PC usually has radius of curvature more smaller than cutting region 5235C.This is conducive to from porous With the solar cell for shifting cutting in 5230, without allowing the break surface friction of adjacent cutting solar cell or connecing It touches (this may cause to cause solar cell failure because of crackle or other failure modes).Specifically, smaller radius of curvature The spacing of bigger is provided between the edge of the adjacent cutting solar cell on porous belts.It cuts in rear region 5235PC Vacuum can relatively low (for example, with similar or identical in flat site 5235F) because chip 45 has been split into solar-electricity Pond 10, therefore no longer need the bending radius that solar cell is tied to vacuum manifold.For example, the solar cell of cutting 10 edge can be taken away from porous belts 5230.Furthermore, it is possible to it is desirable that the solar cell of cutting 10 is inexcessive It tenses.
The flat of vacuum manifold, transition, cutting and cutting rear region can be the discrete parts of different curves, and it End matching.For example, the upper surface of every manifold may include flat planar section, the ellipse for transitional region A part, the circular arc for cutting region, and another circular arc for cutting rear region or ellipse a part.Or Person, some or all of bending part of upper surface of manifold may include that curvature gradually increases that (close diameter of a circle subtracts It is small) continuous geometry function.This suitable functions may include but be not limited to spiral functions (such as clothoid) and naturally right Number function.Clothoid is curvature along the linearly increasing curve of crooked route length.For example, in some variations, mistake Cross the part that region, cutting region and cutting rear region are all the single clothoids of one end with matching flat site. In some other variations, transitional region is the other end of one end and matching cutting region with matching flat site Clothoid, the cutting region have circle curvature.In variations below, cutting rear region can have for example The circle curvature of more minor radius or the clothoid curvature of more minor radius.
As described above and such as Figure 62 B and Figure 63 A is schematically shown, and in some variations, a manifold exists High vacuum is provided in cutting region 5235C, and another manifold provides low vacuum in cutting region 5235C.High vacuum discrimination The end Complete Bind for the chip that pipe supports it to manifold curvature, to covering high vacuum manifold quarter line drawing end Enough stress is provided at portion, to start along quarter line drawing rupture.The end for the chip that low vacuum manifold does not support it is complete Staff cultivation is to the curvature of manifold, and therefore, the bending radius of the chip on the side is not small enough, can not be formed in quarter line drawing and start Stress needed for rupture.However, stress is sufficiently high, so as to extend covering high vacuum manifold quarter line drawing the other end at open The crackle of beginning.There is no some vacuum by the end part of chip on " low vacuum " side and is fully tied to manifold In the case of curvature, there may be following risk：The crackle started on opposite " high vacuum " end of chip will not exist always It is extended on chip.In variations as just mentioned, a manifold can optionally provide along its whole length low true Sky passes through cutting rear region 5235PC from land regions 5235F.
As just mentioned, the asymmetric vacuum arrangement in cutting region 5235C provides asymmetric stress along line drawing is carved, The asymmetric stress control, which forms the core of crackle along quarter line drawing and controls crackle edge, carves line drawing sprawling.See, for example, figure 63B, if alternatively, two vacuum manifolds provide equal (for example, high) vacuum in cutting region 5235C, it can be with The core of crackle is formed at the both ends of chip, crackle can extend toward each other, and in the somewhere of the central area of chip It merges.In this case, there are following risks：Crackle does not form straight line each other, and therefore, they are in obtained cutting electricity The potential mechanical failure point that crackle merges in pond.
As the replacement of above-mentioned asymmetric vacuum arrangement, or as supplement, by the way that the one end for carving line drawing is arranged to The cutting region of manifold is reached before the other end, cutting can preferentially start in the at one end for carving line drawing.For example, this can lead to It crosses and is orientated to solar cell wafer and vacuum manifold is at an angle realizes, as described in above in association with Figure 20 B.As for Generation, vacuum manifold may be disposed so that cutting for the cutting region of a manifold in two manifolds and another vacuum manifold It cuts region and compares and extend further along porous belt path.For example, two vacuum manifolds with same curvature can move It is slightly offset on the direction of travel of dynamic porous belts, so that solar cell wafer is in the cutting for reaching another vacuum manifold The cutting region of a manifold is reached before region.
Referring now to Figure 64, in an example shown, every vacuum manifold 5235 includes along in vacuum passage 5245 The heart arranges straight through-hole 5240.As shown in Figure 65 A to Figure 65 B, vacuum passage 5245 is recessed into support porous belts 5230 In the upper surface of manifold.Every vacuum manifold further includes being placed between through-hole 5240 and along in vacuum passage 5245 The heart is in line the centre strut 5250 of arrangement.Vacuum passage 5245 is effectively divided into positioned at a row center by centre strut 5250 Two parallel vacuum passages on the either side of pillar.Centre strut 5250 is also that porous belts 5230 provide support.Do not having In the case of centre strut 5250, porous belts 5230 will be exposed to longer no supporting zone, and may be by towards through-hole 5240 inhale downwards.The three-dimensional bending (being bent with cut radius and perpendicular to cut radius) that can lead to chip 45 in this way, to Solar cell may be damaged and interfere cutting process.
As shown in Figure 65 A to Figure 65 B and Figure 66 to Figure 67, in the example shown, through-hole 5240 and low vacuum chamber 5260L (the flat site 5235F in Figure 62 A and transitional region 5235T) is connected to, with the high vacuum chamber 5260H (cutting areas in Figure 62 A Domain 5235C) connection, and be connected to another low vacuum chamber 5260L (the cutting rear region 5235PC in Figure 62 A).This arrangement It provides and seamlessly transits between low vacuum regions and high vacuum region in vacuum passage 5245.Through-hole 5240 provides enough Flow resistance, so that if the corresponding region in hole is opened completely, air-flow will not deflect into the hole completely, and Other regions are allowed to maintain vacuum.Vacuum passage 5245 assists in ensuring that the hole 5255 of vacuum porous belts will have vacuum always, and And it is not in dead point when being set between through-hole 5240.
Figure 67 being can be found in referring again to Figure 65 A to Figure 65 B and also, porous belts 5230 may include such as two rounds 5255, The hole is optionally arranged so that when porous belts advance along manifold, before the solar cell 10 of chip 45 or cutting Edge and rear 527 remain under vacuum.Specifically, the interlaced arrangement in the hole 5255 in shown example ensures chip 45 Or the edge of the solar cell 10 of cutting is Chong Die at least one of each porous belts 5230 hole 5255 always.This is helped It is raised far from porous belts 5230 and manifold 5235 in preventing the edge of chip 45 or the solar cell 10 of cutting.It can also Use any other suitable arrangement in hole 5255.In some variations, the arrangement in hole 5255 cannot ensure chip 45 or The edge of the solar cell 10 of cutting remains under vacuum.
Mobile porous belts 5230 in the shown example of cutting tool 5210 are only along the width by porous belts along the sun Can battery wafer transverse edge and the bottom of two fillet contact solar cell chips 45 defined.Therefore, solar-electricity Pond chip can include the soft material that will not contact porous belts 5230 for example in the region of the bottom surface of solar cell wafer (such as, incured adhesives) so that do not have to damage the risk of soft material in cutting process.
In substitute variants form, for example, cutting tool 5210 can use single mobile porous belts 5230, rather than The mobile porous belts of two as just mentioned, the single mobile porous belts have the width perpendicular to direction of travel, the width It is approximately equal to the width of solar cell wafer 45.Alternatively, cutting tool 5210 may include three, four or more shiftings Dynamic porous belts 5230, the mobile porous belts can parallelly be arranged side by side and optionally be separated from each other.Cutting tool 5210 can use single vacuum manifold 5235, and the vacuum manifold can be for example with the traveling perpendicular to solar cell The width in direction, the width are substantially equal to the width of solar cell wafer 45.This vacuum manifold can for example with it is single whole The mobile porous belts 5230 of a width are used together, or be parallelly arranged side by side and be optionally separated from each other two A or more such porous belts are used together.Cutting tool 5210 may include the vacuum manifold 5235 being for example bent by two Porous belts 5230 individually are moved along what opposite transverse edge supported, the vacuum manifold of the bending is parallelly arranged side by side And it is separated from each other, and every vacuum manifold curvature having the same.Cutting tool 5210 may include parallelly side by side Three or more vacuum manifolds 5235 being bent arranged and be separated from each other, wherein every vacuum manifold is having the same Curvature.This arrangement can be for example used together with the mobile porous belts 5230 of single entire width, or with parallelly side by side It arranges and three or more the such porous belts being optionally separated from each other is used together.For example, cutting tool may include Mobile porous belts 5230 for every vacuum manifold.
Any suitable configurations of mobile porous belts and vacuum manifold can be used in cutting tool 5210.
As described above, in some variations, before being cut, the sun is painted at quarter with what cutting tool 5210 was cut Can battery wafer 45 at the top of it and/or in bottom surface comprising uncured conductive adhesive grafting material and/or other Soft material.The quarter of solar cell wafer paints the application with soft material and can be carried out by any order.
Porous belts 5230 (and porous belts 1060 in cutting tool 1050) in cutting tool 5210 can be with following speed Transport solar cell wafer 45：For example, about 40 mm/seconds (mm/s) to about 2000mm/s or bigger or about 40mm/s extremely About 500mm/s or bigger or about 80mm/s or bigger.Compared with compared with low velocity, can more easily it cut at higher speeds Cut solar cell wafer 45.
Referring now to Figure 68, once after cutting, due to the geometry around curved, adjacent cutting battery There will be some spacing between 10 leading edge and rear 527, this can be formed between wedge shape between adjacent cutting solar cell Gap.If in the case of spacing between the battery for not increasing cutting first, allowing the battery of cutting back to flat Coplanar orientation, then the edge of adjacent cutting battery may be contacted and be damaged each other.It would thus be advantageous in the electricity of cutting While pond is still supported by curved surface, they are removed from porous belts 5230 (or porous belts 1060).
Figure 69 A to Figure 69 G schematically show several device and method, and the solar cell cut whereby can be from One or more additional mobile porous belts or mobile table are removed and are transported in porous belts 5230 (or porous belts 1060) Face, wherein the spacing between the solar cell cut increases.In the example of Figure 69 A, by one or more conveyer belts 5265 The solar cell 10 of cutting is collected from porous belts 5230, the conveyer belt is moved more quickly than than porous belts 5230, and thereby Increase the spacing between the solar cell 10 of cutting.For example, conveyer belt 5265 can be arranged two porous belts 5230 it Between.In the example of Figure 69 B, by being slided along the sliding machine 5270 being arranged between two porous belts 5230, by cutting Chip 10 is divided.In this example, the battery 10 of each cutting is advanced to the low vacuum (example of manifold 5235 by porous belts 5230 Such as, no vacuum) in region, so that the battery of cutting is discharged into sliding machine 5270, at the same the non-cut portion of chip 45 still by Porous belts 5230 are held.Air cushion is provided between the battery 10 and sliding machine 5270 of cutting to be helped to ensure battery and sliding machine It is not worn during operation, and the battery 10 of cutting is also allowed quickly to slide away from chip 45, it is faster to allow Cutting belt service speed.
In the example of Figure 69 C, rotation " great wheel " arranges the bracket 5275A in 5275 by the solar cell of cutting 10 are transmitted to one or more bands 5280 from band 5230.
In the example of Figure 69 D, rotating roller 5285 is by actuator 5285A applying vacuums, to be picked up from band 5230 It the solar cell 10 of cutting and places them on band 5280.
In the example of Figure 69 E, bracket actuator 5290 includes bracket 5290A and the extension type on bracket Actuator 5290B.Bracket 5290A is translated back and forth, to be positioned to actuator 5290B to remove cutting too from band 5230 Positive energy battery 10, and then be arranged to the solar cell of cutting can be placed on band 5280 by actuator 5290B.
In the example of Figure 69 F, track bracket arrangement 5295 includes the bracket 5295A for being attached to mobile band 5300, described Bracket 5295A is arranged to that the solar cell 10 of cutting can be removed from band 5230 by mobile band, and then by bracket 5295A is arranged to that the solar cell 10 of cutting can be placed on band 5280, due to the path of band 5230, when bracket is from band Latter situation can occur when falling or pull away in 5280.
In the example of Figure 69 G, inverted vacuum belt arrangement 5305 is applied true by the mobile porous belts of one or more Sky, so that the solar cell 10 of cutting is transmitted to band 5280 from band 5230.
Figure 70 A to Figure 70 C provide the exemplary tool of attached drawing description above in association with Figure 62 A to Figure 62 B and later The orthogonal view of other variations.The variations 5310 use conveyer belt 5265, such as in the example of Figure 69 A, so as to from The solar cell 10 of cutting is removed in porous belts 5230, uncut chip 45 is transported cutting for tool by the porous belts It cuts in region.The perspective of Figure 71 A to Figure 71 B shows the variations of the cutting tool in two different operating stages. In Figure 71 A, close to the cutting region of tool, and in Figure 71 B, chip 45 comes into uncut chip 45 Cutting region, and the solar cell 10 of two cuttings is divided with chip, then when they are transported by conveyer belt 5265 When further divide each other.
Other than previously described feature, Figure 70 A to Figure 71 B show multiple vacuum ports 5315 on every manifold. Every manifold may be implemented preferably to control the variation of vacuum along the length of the upper surface of manifold using multiple mouths.For example, not Same vacuum port 5315 can optionally connect from different vacuum chambers (for example, 5260L in Figure 66 and Figure 72 B and 5260H) It is logical, and/or it is optionally coupled to different vacuum pumps, to provide different vacuum pressures along manifold.Figure 70 A to Figure 70 B Also show the fullpath of porous belts 5230, the porous belts around the upper surface of wheel 5325, vacuum manifold 5235 with And wheel 5320 recycles.For example, band 5230 can be driven by wheel 5320 or wheel 5325.
Figure 72 A and Figure 72 B show that the part by porous belts 5230 of the variations for Figure 70 A to Figure 71 B is covered The perspective view of a part for the vacuum manifold 5235 of lid, wherein Figure 72 A provide the close-up view of a part of Figure 72 B.Figure 73A shows the top view of a part for the vacuum manifold 5235 covered by porous belts 5230, and Figure 73 B show along The cross-sectional view for identical vacuum manifold and the porous belts arrangement that line C-C shown in Figure 73 A is intercepted.As shown in Figure 73 B, through-hole 5240 relative orientation can change along the length of vacuum manifold, so that each through-hole is arranged to and is being located at through-hole just The part of the upper surface of the manifold of top is vertical.Figure 74 A show one of the vacuum manifold 5235 covered by porous belts 5230 Another top view divided, wherein illustrating vacuum chamber 5260L and 5260H with perspective.Figure 74 B show a part of Figure 74 A Close-up view.
Figure 75 A to Figure 75 G are shown can be optionally for several exemplary bore patterns of vacuum porous belts 5230.This The common trait of a little patterns is, chip 45 or the cutting of pattern are passed through perpendicular to long axis any position on tape of band The straight edge of solar cell 10 will be overlapped at least one of each belt hole 5255 always.For example, the pattern can wrap Include the square that two or more rows are interlocked or the round hole (figure that rectangular opening (Figure 75 A, Figure 75 D), two or more rows are interlocked 75B, Figure 75 E, Figure 75 G), two or more rows inclined groove (Figure 75 C, Figure 75 F) or any other suitable hole cloth It sets.
Subject description discloses the high-efficiency solar modules including silicon solar cell, and the silicon solar cell is with weight Folded stacking mode is arranged and is electrically connected in series by the conductibility engagement between adjacent overlapping solar cell, to be formed Superbattery, these superbatteries are arranged to the row of physical parallel in solar energy module.Superbattery may include any suitable The solar cell of quantity.For example, the length of superbattery can substantially across the overall length of solar energy module or overall with, or Person, two or more superbatteries can be arranged to end-to-end in a row.This arrangement conceals between solar cell Electrical interconnection, and therefore can be used for form the solar energy module with visual attraction, wherein adjacent is connected in series with There are very little difference or no difference between solar cell.
This specification also disclose help to metallize stencilization to solar cell front surface (and optionally) Cell metallization pattern in rear surface.As used herein, " stencilization " of cell metallization refers to by otherwise Patterning in impermeable plate of material is open is applied to solar cell surface by metallization material (for example, silver paste) On.For example, the masterplate can be patterned stainless steel plate.Patterning opening in masterplate is entirely free of masterplate material, and And for example including any mesh or silk screen.There is no mesh or web material in being open due to patterned masterplate, it can " stencilization " used herein is distinguished with " silk-screen printing ".In contrast, in silk-screen printing, metallization material By supporting the silk screen (for example, mesh) of patterned permeable material to be applied in solar cell surface.The pattern packet The opening in impermeable material is included, by the opening, metallization material is applied on solar cell.Support silk screen Extend through the opening in impermeable material.
Compared with silk-screen printing, the stencilization of cell metallization pattern provides multiple advantages, including line width is more Narrow, length-width ratio (line height and the width) higher, line uniformity and boundary more preferably and masterplate than silk screen, the service life is longer. However, stencilization can not one-step print go out " island " needed in conventional three bus metalizations design.In addition, masterplate prints Brush can not one-step print to go out to need masterplate include the metallization pattern of unbraced structure, the unbraced structure is during printing It is not limited in the plane of masterplate, and may interfere with the placement and use of masterplate.For example, stencilization can not be primary Metallization pattern is printed out, wherein the metallization finger-shaped material being arranged in parallel is by the bus extended perpendicular to finger-shaped material or other gold Categoryization feature interconnect because the single masterplate of this design by include by for bus opening and for the opening of finger-shaped material The Flagless material tongue piece defined.The tongue piece will not be because of the physical connection of the other parts with masterplate during printing It is confined in the plane of masterplate, and plane will likely be removed and the placement of masterplate and use is made to change.
Therefore, it attempts for printing conventional solar cell to need masterplate with two different masterplates to frontside metal Change is printed twice or stencilization step is combined with screen printing step, can increase total print of each battery in this way Brush number of steps and " pressing " problem is also will produce, when this problem occurs, two block letter are overlapped and lead to double-height. The pressing is so that further processing complicates, and additional printing and correlation step can increase cost.Therefore, silk screen Printing is not usually used in solar cell.
As described further below, front surface metallization pattern as described herein may include not metallizing by front surface Pattern is connected to the array (for example, parallel lines) of mutual finger-shaped material.These patterns can carry out a masterplate with single masterplate Printing, because required masterplate need not include no support section or structure (for example, tongue piece).For the standard-sized sun Can be for the solar cell string that is interconnected by brazing band of battery and the solar cell that is wherein spaced apart, this front surface metal It may be unfavorable to change pattern, because metallization pattern itself will not provide a large amount of current distributions or electricity perpendicular to finger-shaped material Conduction.However, front surface metallization pattern as described herein is in the stacking arrangement of rectangle solar cell as described herein Extremely effectively, the rear surface gold of the wherein part and adjacent solar battery of the front surface metallization pattern of solar cell Categoryization pattern overlapping and conductive bond are to the rear surface metallization pattern.This is because the overlapping of adjacent solar battery Rear surface metallization can provide current distribution and electrical conduction perpendicular to finger-shaped material in front surface metallization pattern.
Turning now to attached drawing, to understand the solar energy module described in this specification in more detail, Fig. 1 is shown The viewgraph of cross-section for a string of the solar cells 10 arranged in a manner of stacking, being connected in series with, the wherein end of adjacent solar battery Portion is overlapped and is electrically connected, to form superbattery 100.Each solar cell 10 include semiconductor diode structure and It is connected to the electric contact of semiconductor diode structure, the electric current that solar cell 10 wherein generates when being irradiated by light can pass through this A little electric contacts and be supplied to external loading.
In the example of this specification description, each solar cell 10 is rectangular crystal silicon solar cell, tool There are front surface (day side) metallization pattern and back surface (in the shade side) metallization pattern, front surface metallization pattern to be arranged in n On the semiconductor layer of type electric conductivity, back surface metallization pattern is arranged on the semiconductor layer of p-type conductivity, these metallization Pattern provides electrical contact for the opposite sides of n-p junction.However, if applicable, other materials system, two poles can be used Pipe structure, physical size or electrical contact arrangement.For example, preceding (day side) surface metalation pattern may be provided at p-type conductibility Semiconductor layer on, rear (in the shade side) surface metalation pattern may be provided on the conductive semiconductor layer of n types.
Referring again to Fig. 1, in superbattery 100, adjacent solar battery 10 is at them by conductive bonding material reality It is conductively directly connectcted in the region being now overlapped each other, the conductive bonding material is by the preceding table of a solar cell Face metallization pattern is electrically connected to the rear surface metallization pattern of adjacent solar battery.Suitable conductive bonding material can wrap Include such as electroconductive binder, electrically conductive adhesive film and adhesive tape and general solder.
Referring again to Fig. 2, Fig. 2 shows the exemplary rectangular solar energy modules for including six rectangle superbatteries 100 200, the length of the long side for being approximately equal to the length to solar energy module of each rectangle superbattery.Superbattery is arranged to flat Six capable rows, the long side that long side is parallel to module are orientated.The solar energy module of like configurations may also comprise the super of this length of side Grade battery, but its number of rows is more than number of rows shown in the example or few.In other variations, the respective length of superbattery The length of the short side of rectangle solar energy module is may be approximately equal to, and the superbattery is arranged to parallel row, In their long side be parallel to module short side be orientated.In other other arrangements, each row may include two or more Superbattery, the superbattery can such as series electrical interconnections.The short side that module can be for example, about 1 meter with length, with And the long side that length is for example, about 1.5 to about 2.0 meters.Or solar energy module selects any other suitable shape (example Such as, square) and size.In this example, each superbattery includes 72 rectangle solar cells, each rectangle sun The width of energy battery is substantially equal to the 1/6 of 156 millimeters (mm) square or the width of pseudo-square wafers, and length is about 156mm.The rectangle solar cell of any other suitable quantity and any other suitable dimension can also be used.
Figure 76 shows the exemplary front surface gold be conducive to as described above on the rectangle solar cell 10 of stencilization Categoryization pattern.Front surface metallization pattern can be formed by such as silver paste.In the example of Figure 76, front surface metallization pattern Including multiple finger-shaped materials 6015, the finger-shaped material be parallel to each other, be parallel to the short side of solar cell and perpendicular to solar energy The long side of battery and extend.Front surface metallization pattern further includes being parallel to and extending adjacent to the long side edge of solar cell The optional engagement pad 6020 of a row, wherein each engagement pad 6020 is located at the end of finger-shaped material 6015.There are the case where Under, each engagement pad 6020 be electroconductive binder (ECA), solder or for by the front surface of shown solar cell conduct The independent globule for being joined to property other conductive bonding materials of the lap of the rear surface of adjacent solar battery provides Region.Pad can be for example with round, square or rectangular shape, but can also use any suitable pulvilliform shape.As making With the replacement of the independent globule of conductive bonding material, ECA, solder, conductive tape or the long side edge along solar cell The solid line or dotted line for other conductive bonding materials being arranged can interconnect some or all of finger-shaped material, and by the sun Can battery engagement to adjacent overlapping solar cell.This dotted line or solid line conductive bonding material can be with finger-shaped material ends The conductibility pad at place is used in combination, or is used in the case of no such conductibility pad.
Solar cell 10 can have for example, about the length of 156mm, about 26mm width, and therefore have about 1:6 length Width is than (length of length/long side of short side).Can be prepared on the standard-sized silicon wafers of 156mm × 156mm six it is this too Positive energy battery is then divided (cutting) to provide the solar cell of diagram.It, can be by standard in other variations It is about 19.5mm × 156mm that silicon wafer, which prepares eight sizes, therefore length-width ratio is about 1:8 solar cell 10.More typically Ground, solar cell 10 can have for example, about 1:2 to about 1:20 length-width ratio, and can by standard size chip or any other It is prepared by the chip of suitable dimension.
Referring again to Figure 76, front surface metallization pattern may include about 60 to about 120, the battery for example per 156mm wide Finger-shaped material, for example, about 90 finger-shaped materials.The width of finger-shaped material 6015 can be for example, about 10 to about 90 microns, for example, about 30 microns. Finger-shaped material 6015 can have perpendicular to the surface of solar cell height, for example, about 10 to about 50 microns.Finger-shaped material height Can be for example, about 10 microns or bigger, about 20 microns or bigger, about 30 microns or bigger, about 40 microns or bigger or about 50 microns or bigger.The diameter (circle) or the length of side (square or rectangle) of pad 6020 can be for example, about 0.1mm to about 1mm, such as About 0.5mm.
Rear surface metallization pattern for rectangle solar cell 10 may include for example being parallel to and adjacent to solar-electricity The discrete engagement pad of a row of the long side edge in pond, the engagement pad of row interconnection or continuous bus.However, such engagement pad or Bus is not required.If front surface metallization pattern includes one edge cloth in the long side along solar cell The engagement pad 6020 set, then the engagement pad row or bus (if present) in rear surface metallization pattern are along the sun The edge arrangement of another long side of energy battery.Rear surface metallization pattern may also include the institute for substantially covering solar cell There is the metal back side contact of remaining rear surface.The exemplary rear surface metallization pattern of Figure 77 A includes the discrete engagement pad of a row 6025 and metal back side contact 6030 as just mentioned, and the exemplary rear surface metallization pattern of Figure 77 B includes connecting Continuous bus 35 and metal back side contact 6030 as just mentioned.
In covering formula superbattery, the front surface metallization pattern of solar cell be conductively joined to it is adjacent too The lap of the rear surface metallization pattern of positive energy battery.For example, if solar cell includes front surface metallized contact Pad 6020, then each engagement pad 6020 can be (if present) right with corresponding rear surface metallized contact pad 6025 It is accurate and be joined to the engagement pad, or be aligned (if present) with rear surface metallization bus 35 and be joined to this Bus, or the metal back side contact 6030 (if present) that is joined in adjacent solar battery.This can be such as Discrete parts (for example, globule) by the conductive bonding material in each engagement pad 6020 is arranged are completed, or by being parallel to The dotted line that the edge of solar cell extends and optionally two or more engagement pads in engagement pad 6020 are electrically interconnected Or solid line conductive bonding material is completed.
If solar cell lacks front surface metallized contact pad 6020, for example, each front surface metallization figure Case finger-shaped material 6015 can (if present) be aligned with corresponding rear surface metallized contact pad 6025 and be joined to this Engagement pad is either joined to rear surface metallization bus 35 (if present) or is joined in adjacent solar battery Metal back side contact 6030 (if present).This can be for example by being arranged the overlapping end in each finger-shaped material 6015 On conductive bonding material discrete parts (for example, globule) complete, or by be parallel to solar cell edge extend And the dotted line or solid line conductive bonding material that optionally two or more finger-shaped materials in finger-shaped material 6015 are electrically interconnected come It completes.
As described above, for example, if rear surface bus 35 and/or back metal contact 6030 exist, it is adjacent The multiple portions of the overlapping rear surface metallization of solar cell can be provided hangs down with the finger-shaped material in front surface metallization pattern Straight current distribution and electrical conduction.It is conductive in the variations using dotted line as described above or solid line conductive bonding material Grafting material can provide the current distribution and electrical conduction vertical with the finger-shaped material in front surface metallization pattern.After overlapping Surface metalation and/or conductive bonding material can for example carry electric current to bypass being destroyed in front surface metallization pattern Finger-shaped material or other finger-shaped materials interference.
If it exists, rear surface metallized contact pad 6025 and bus 35 can be formed by such as silver paste, it is described Silver paste may be used stencilization, silk-screen printing or any other suitable method and apply.Metal back side contact 6030 can For example to be formed by aluminium.
Any other suitable rear surface metallization pattern and material can also be used.
Figure 78 shows the exemplary front surface metallization pattern on square solar cell 6300, and the square is too Positive energy battery can be cut into multiple rectangle solar cells, and each rectangle solar cell has preceding table shown in Figure 76 Face metallization pattern.
Figure 79 shows the exemplary rear surface metallization pattern on square solar cell 6300, and the square is too Positive energy battery can be cut into multiple rectangle solar cells, table after each rectangle solar cell has shown in Figure 77 A Face metallization pattern.
Front surface metallization pattern as described herein can enable to give birth in the solar cell of three printing machines of standard The stencilization of front surface metallization is carried out in producing line.For example, production process may include：Using the first printing machine by silver paste Stencilization is screen-printed in the rear surface of square solar cell, forms rear surface engagement pad or rear surface silver is total Line；Then rear surface silver paste is dried；Then it by the stencilization of aluminium contact or is screen-printed to using the second printing machine In the rear surface of solar cell；Then aluminium contact is dried；Then existed using single masterplate by third printing machine Silver paste is printed onto in the front surface of solar cell in single plate-making step, forms complete front surface metallization pattern； Then silver paste is dried；Then solar cell is toasted.If applicable, these printings and related step Suddenly it can carry out, or omit according to any other sequence.
Make it possible to produce than that may produce by silk-screen printing to print front surface metallization pattern using masterplate The narrower finger-shaped material of finger-shaped material, so as to improve solar battery efficiency and reduce the use of silver, thus reduce and be produced into This.By single masterplate, stencilization goes out front surface metallization pattern and makes it possible to produce in single stencilization step Front surface metallization pattern with uniform height, such as do not press, if multiple masterplates or stencilization is used in combination Chong Die printing is carried out to define the feature extended in different directions with silk-screen printing, then is likely to occur pressing.
After front surface and rear surface metallization pattern are formed on square solar cell, each square sun Energy battery is segmented into two or more rectangle solar cells.This is cut after can for example being painted by laser incising It completes, or passes through any other suitable method and complete.Rectangle solar cell can be by the stacking mode cloth of overlapping It sets and is conductively joined to each other as described above, to form superbattery.Subject description discloses for manufacturing the sun There is reduced Carrier recombination to lose for the method for energy battery, the wherein edge of solar cell, for example, not promoting to carry The compound cut edge of stream.Solar cell can be such as silicon solar cell, and more particularly can be HIT Silicon solar cell.This specification also discloses stacking formula (overlapping) superbattery arrangement of such solar cell.It is such super Single solar cell in grade battery can have narrow rectangular geometry (for example, streaky shape), wherein adjacent solar energy The long side of battery is arranged to overlapping.
By with implementing present in such as high performance solar batteries of HIT solar cells etc in a manner of cost-benefit Significant challenge be, it is generally recognized that needs high current is carried from such high performance solar batteries using a large amount of metal To the adjacent high performance solar batteries being connected in series with.Such high performance solar batteries are cut into narrow rectangle solar cell item, The solar cell then arranged with overlapping (stacking) pattern, wherein has between the lap of adjacent solar battery Have conductibility engagement to form the solar cell string being connected in series in superbattery, to for by process simplification come It reduces module cost and chance is provided.This is because can eliminate with metal welding band adjacent solar battery is interconnected it is commonly required The fixed step wanted.By reducing the electric current by solar cell (since single solar cell item can have than routine more Small effective coverage), and by reducing the current path length between adjacent solar battery, both it is likely to reduced electricity Resistance loss so that this stacking method can also improve module efficiency.The electric current of reduction can also allow with inexpensively but electric Larger conducting wire (for example, copper) is hindered to replace costly but the less conducting wire of resistance (for example, silver), and performance is not damaged significantly It loses.In addition, this stacking method can be subtracted by eliminating interconnection welding and relevant contacts from the front surface of solar cell Few invalid module region.
The solar cell of stock size can with such as size be about 156 millimeters (mm) × about 156mm substantially just Rectangular front surface and rear surface.In stacking scheme just described, such solar cell is cut into two or more The solar cell item of (for example, two to 20) 156mm long.The potential challenges of this stacking method are, with conventional ruler Very little solar cell is compared, and the solar cell of stock size is cut into every effective district that sheet increases solar cell The battery edge length in domain, so as to reduce performance due to the Carrier recombination because of edge.
For example, Figure 80 is schematically shown front surface and rear surface size with about 156mm × about 156mm HIT solar cells 7100 are cut into several solar cell items (7100a, 7100b, 7100c and 7100d), each solar-electricity Pond item has the narrow rectangular front face and rear surface that size is about 156mm × about 40mm.(the 156mm long sides of solar cell item It extends in the page).In the example shown, HIT batteries 7100 include N-shaped single crystalline substrate 5105, and the substrate can be such as With the preceding square surface and rear square surface that about 180 microns of thickness and size are about 156mm × about 156mm.About The intrinsic amorphous Si of 5 nanometers (nm) thickness:H(a-Si:H) layer and the n+ of about 5nm thickness adulterate a-Si:H layers (two layers are all by referring to Label 7110 indicates) it is arranged in the front surface of crystalline silicon substrate 7105.The transparent conducting oxide (TCO) of about 65nm thickness Film 5120 is arranged in a-Si:On H layers 7110.The conductive metal gridline 7130 being arranged on tco layer 7120 is solar energy The front surface of battery provides electric contact.The intrinsic a-Si of about 5nm thickness:The p+ doping a-Si of H layers and about 5nm thickness:H layers of (two layer All indicated by reference label 7115) it is arranged in the rear surface of crystalline silicon substrate 7105.The transparent conductive oxide of about 65nm thickness Object (TCO) film 7125 is arranged in a- Si:On H layers 7115, and the conductive metal gridline being arranged on tco layer 7125 7135 provide electric contact for the rear surface of solar cell.(above-mentioned size and material are intended to illustrate and unrestricted, and if Properly, thus it is possible to vary).
Referring also to Figure 80, if HIT solar cells 7100 are cut to strip solar cell by conventional method 7100a, 7100b, 7100c and 7100d, then the edge 7140 newly cut is not passivated.Contain highly dense in these non-passivation edges The dangling chemical bonds of degree, the dangling chemical bonds promote Carrier recombination and reduce the performance of solar cell.It is specific and Speech, the cutting surfaces 7145 of exposure n-p junction and the cutting surfaces of exposure heavy doping front surface area are not passivated (in layer 7110), And Carrier recombination can be remarkably promoted.In addition, if by conventional laser cutting or laser incising paint process for cut too It is positive can battery 7100, then it is possible that thermal damage on the edge newly formed, for example, non-crystalline silicon recrystallization 7150.Due to Non-passivation edge and thermal damage, if using conventional manufacturing process, cutting solar cell 7100a, 7100b, It is expected that the quasi- filling of short circuit current, open-circuit voltage and solar cell can be reduced in the new edge formed on 7100c and 7100d Factor.This performance for being equivalent to solar cell significantly reduces.
By method shown in Figure 81 A to Figure 81 J, can be cut into more to avoid by the HIT solar cells of stock size It is formed during narrow solar cell item and promotes compound edge.This method uses the solar cell of stock size Isolated groove in 7100 front surface and rear surface, by the front surface area of p-n junction and heavy doping and in other respects may be used The cut edge that the spot of minority carrier can be served as is electrically isolated.Slot wedge is not defined by conventional cutting, but is used Chemical etching or laser patterning, deposit passivation layer later, such as, the TCO for making preceding groove and rear groove be passivated.With heavy doping Region is compared, and substrate doping is sufficiently low, so that the electronics in knot reaches the possibility for not being passivated cut edge of substrate very It is small.In addition, the wafer dicing techniques of few cut, laser heat divide (TLS), cut crystal can be used for, it is potential to avoid Thermal damage.
In the example shown in Figure 81 A to Figure 81 J, starting material is the square n types monocrystalline silicon original cutting of about 156mm Chip, the chip can have the body resistivity of for example, about 1 to about 3 ohm-cm and can be for example, about 180 microns of thickness. (chip 7105 forms the substrate of solar cell).
Referring to Figure 81 A, former cut crystal 7105 usually carries out texture etching, pickling, rinsing and drying.
Next, in Figure 81 B, for example, by plasma reinforced chemical vapour deposition (PECVD), at for example, about 150 DEG C At a temperature of about 200 DEG C, by the intrinsic a-Si of about 5nm thickness:The doping n+a-Si of H layers and about 5nm thickness:H layers (two layers are all Indicated by reference label 7110) it is deposited in the front surface of chip 7105.
Next, in Figure 81 C, it will about at a temperature of for example, about 150 DEG C to about 200 DEG C for example, by PECVD The intrinsic a-Si of 5nm thickness:The doping p+a-Si of H layers and about 5nm thickness:H layers (two layers are all indicated by reference label 7115) deposits In the rear surface of chip 7105.
Next, in Figure 81 D, preceding a-Si:H layers 7110 form isolated groove 7112 by patterning.Isolated groove 7112 usual penetrated beds 7110, and can be with for example, about 100 microns to about 1000 microns of width to reach chip 7105 Degree, for example, about 200 microns.In general, groove has the minimum widith that can use, it is specifically dependent upon patterning techniques and then The accuracy of the cutting technique of application.The patterning of groove 7112 can be for example using laser patterning or chemical etching (example Such as, ink-jet wet type patterns) it completes.
Next, in Figure 81 E, rear a-Si:H layers 7115 form isolated groove 7117 by patterning.Similar to every From groove 7112,7117 usual penetrated bed 7115 of isolated groove can have for example, about 100 micro- to reach chip 7105 The width that 1000 microns of meter Zhi Yue, for example, about 200 microns.The patterning of groove 7117 can for example using laser patterning or Chemical etching (for example, ink-jet wet type patterns) is completed.Each groove 7117 and the respective grooves 7112 in the front surface of structure It is in line.
Next, in Figure 81 F, the tco layer 7120 of about 65nm thickness is deposited on patterned preceding a-Si:H layers 7110 On.This can for example be completed by physical vapour deposition (PVD) (PVD) or ion plating.Tco layer 7120 fills a-Si:H layers 7110 In groove 7112 and coating 7110 external margin, to make the surface passivation of layer 7110.Tco layer 7120 also serves as Anti-reflection coating.
Next, in Figure 81 G, the tco layer 7125 of about 65nm thickness is deposited on patterned rear a-Si:H layers 7115 On.This can for example be completed by PVD or ion plating.Tco layer 7125 fills a-Si:Groove 7117 in H layers 7115 is simultaneously And the external margin of coating 115, to make the surface passivation of layer 7115.Tco layer 7125 also serves as anti-reflection coating.
Next, in Figure 81 H, conductibility (for example, metal) front surface gridline 7130 is screen-printed to tco layer On 7120.Gridline 7130 can be formed by such as low temperature silver paste.
Next, in Figure 81 I, conductibility (for example, metal) rear surface gridline 7135 is screen-printed to tco layer On 7125.Gridline 7135 can be formed by such as low temperature silver paste.
Next, after deposition gridline 7130 and gridline 7135, for example, by the sun at a temperature of about 200 DEG C Energy battery cures about 30 minutes.
Next, in Figure 81 J, by cutting solar cell at the center of groove, solar cell is divided into too Positive energy cell strip 7155a, 7155b, 7155c and 7155d.Cutting can for example be carved by conventional laser at the center of groove It paints and is completed with machine cuts, cut solar cell with alignment grooves.Alternatively, laser heat segmentation side can be used Method (for example, by Jena optics group (Jenoptik AG) develop) is completed to cut, wherein the laser at the center of groove Induced heat causes mechanical stress, the mechanical stress that alignment grooves are cut solar cell.Later approach can Thermal damage is caused to avoid the edge to solar cell.
Obtained strip solar cell 7155a-7155d is different from strip solar cell 7100a- shown in Figure 80 7100d.Specifically, the a-Si in solar cell 7140a-7140d:H layers 7110 and a-Si:The edge of H layers 7115 passes through Etching or laser patterning and formed, rather than formed by machine cuts.In addition, in solar cell 7155a-7155d The edge of layer 7110 and 7115 is passivated by tco layer.Therefore, solar cell 7140a-7140d lacks solar cell 7100a- Promote the cut edge of Carrier recombination present in 7100d.
It is intended to illustrate in conjunction with Figure 81 A to Figure 81 J methods described, and it is unrestricted.If applicable, it is described as by spy The step of fixed sequence executes can execute in other sequences or parallel.If applicable, it is convenient to omit, addition or replace step Rapid and material layer.For example, if using copper-plated metallization, during may include additional patterning and seed layer Deposition step.In addition, in some variations, only by preceding a-Si:H layers 7110 are patterned to form isolated groove, then a- Si:Isolated groove is not formed in H layers 7115.In other variations, only by rear a-Si:H layers 7115 are patterned to be formed Isolated groove, and preceding a-Si:Isolated groove is not formed in H layers 7115.Such as in the example of Figure 81 A to Figure 81 J, in these changes In type form, also cut at the center of groove.
By method shown in Figure 82 A to Figure 82 J, can also avoid being cut by the HIT solar cells of stock size It is formed during narrower solar cell item and promotes compound edge, the method also uses isolated groove, is similar to and combines figure In method described in 81A to 81J as use.
Referring to Figure 82 A, in this example, starting material is equally that the square N-shaped monocrystalline silicon original cutting of about 156mm is brilliant Piece 7105, the chip can have the body resistivity of for example, about 1 to about 3 ohm-cm and can be for example, about 180 microns It is thick.
Referring to Figure 82 B, groove 7160 is formed in the front surface of chip 7105.These grooves can have for example, about 80 The depth of micron to about 150 microns, for example, about 90 microns, and can be with for example, about 10 microns to about 100 microns of width Degree.Isolated groove 7160 is defined the geometry of the solar cell item formed by chip 7105.As will be illustrated, Chip 7105 will as the crow flies be cut with these grooves.Groove 7160 can be carved for example, by conventional laser chip and paint and be formed.
Next, in Figure 82 C, chip 7105 usually carries out texture etching, pickling, rinsing and drying.Etching is usually gone Damage caused by except the damage being initially present in the surface of former cut crystal 7105 or during forming groove 7160. Groove 7160 can also be widened and be deepened to etching.
Next, in Figure 82 D, it will about at a temperature of for example, about 150 DEG C to about 200 DEG C for example, by PECVD The intrinsic a-Si of 5nm thickness:The doping n+a-Si of H layers and about 5nm thickness:H layers (two layers are all indicated by reference label 7110) deposits In the front surface of chip 7105.
Next, in Figure 82 E, it will about at a temperature of for example, about 150 DEG C to about 200 DEG C for example, by PECVD The intrinsic a-Si of 5nm thickness:The doping p+a-Si of H layers and about 5nm thickness:H layers (two layers are all indicated by reference label 7115) deposits In the rear surface of chip 7105.
Next, in Figure 82 F, the tco layer 7120 of about 65nm thickness is deposited on preceding a-Si:On H layers 7110.This can be with Such as it is completed by physical vapour deposition (PVD) (PVD) or ion plating.Tco layer 7120 can fill groove 7160 and usually The external margin of the wall of covering groove 7160 and bottom and layer 7110, to make the surface passivation of covering.Tco layer 7120 is also As anti-reflection coating.
Next, in Figure 82 G, the tco layer 7125 of about 65nm thickness is deposited on rear a-Si:On H layers 7115.This can be with Such as it is completed by PVD or ion plating.Tco layer 7125 makes surface (e.g., including the external margin) passivation of layer 7115, And also serve as anti-reflection coating.
Next, in Figure 82 H, conductibility (for example, metal) front surface gridline 7130 is screen-printed to tco layer On 7120.Gridline 7130 can be formed by such as low temperature silver paste.
Next, in Figure 82 I, conductibility (for example, metal) rear surface gridline 7135 is screen-printed to tco layer On 7125.Gridline 7135 can be formed by such as low temperature silver paste.
Next, after deposition gridline 7130 and gridline 7135, for example, by the sun at a temperature of about 200 DEG C Energy battery cures about 30 minutes.
Next, in Figure 82 J, by cutting solar cell at the center of groove, solar cell is divided into too Positive energy cell strip 7165a, 7165b, 7165c and 7165d.Cutting can for example be cut by conventional mechanical at the center of groove It cuts to complete, is cut solar cell with alignment grooves.Alternatively, cutting can for example be swashed using as described above Photo-thermal dividing method is completed.
Obtained strip solar cell 7165a-7165d is different from strip solar cell 7100a- shown in Figure 80 7100d.Specifically, the a-Si in solar cell 7165a-7165d:The edge of H layers 7110 is formed by etching, and It is not to be formed by machine cuts.In addition, the edge of the layer 7110 in solar cell 7165a-7165d is passivated by tco layer. Therefore, solar cell 7165a-7165d, which lacks, promotes Carrier recombination present in solar cell 7100a-7100d Cut edge.
It is intended to illustrate in conjunction with Figure 82 A to Figure 82 J methods described, and it is unrestricted.If applicable, it is described as by spy The step of fixed sequence executes can execute in other sequences or parallel.If applicable, it is convenient to omit, addition or replace step Rapid and material layer.For example, if using copper-plated metallization, during may include additional patterning and seed layer Deposition step.In addition, in some variations, groove 7160 can be formed in the rear surface of chip 7105, rather than brilliant In the front surface of piece 7105.
It is suitable for N-shaped and p-type HIT solar energy above in association with the method for Figure 81 A to Figure 81 J and Figure 82 A to Figure 82 J descriptions Battery.Solar cell can be preceding transmitter or rear transmitter.It can preferably execute and divide on the side of not transmitter Journey.In addition, that reduces on cut crystal edge using isolated groove and passivation layer as described above compound is also applied for it His solar cell design, and suitable for the solar cell using material system in addition to silicon.
Referring again to Fig. 1, use a string of solar cells 10 being connected in series with that the above method formed can advantageously with Stacking mode arranges that wherein the end of adjacent solar battery is overlapped and is electrically connected, to form superbattery 100.Super In battery 100, adjacent solar battery 10 is conductively joined to that in the region that they are overlapped by conductive bonding material This, the front surface metallization pattern of a solar cell is electrically connected to adjacent solar battery by the conductive bonding material Rear surface metallization pattern.Suitable conductive bonding material may include such as electroconductive binder, electrically conductive adhesive film and lead Electric adhesive tape and general solder.
Referring again to Fig. 5 A to Fig. 5 B, Fig. 5 A show the exemplary rectangular sun for including 20 rectangle superbatteries 100 Energy module 200, wherein the length of each rectangle superbattery is approximately equal to the half of solar energy module bond length.It is super The end-to-end pairs of arrangement of battery, and ten row's superbatteries are formed, the wherein row of superbattery and long side is parallel to solar energy mould The short side of block is orientated.In other variations, often arranges superbattery and may comprise three or more superbatteries.In addition, In other variations, the form arrangement that superbattery can be end-to-end is in a row, and the row of superbattery and long side are flat Row is orientated in the long side of rectangle solar energy module, or is parallel to the side orientation of square solar energy module.In addition, solar energy Module may include than more or fewer superbatteries shown in this example and the superbattery of more or less rows.
Superbattery in that, in each row be arranged such that at least one of they have in the row another is super In the variations of front surface terminal contacts on the end of the grade neighbouring superbattery of battery, there may be shown in Fig. 5 A Optional gap 210, to contribute to the center line along solar energy module to be formed and the front surface end of superbattery 100 The electrical contact of contact.In the variations that every row's superbattery includes three or more superbatteries, between superbattery Additional gap may be present, similarly to contribute to form the electricity with the front surface terminal contacts far from each side of solar energy module Contact.
Fig. 5 B show another exemplary rectangular solar energy module 300 for including 10 rectangle superbatteries 100, In the length of each rectangle superbattery be approximately equal to solar energy module bond length.Superbattery is arranged to its long side The short side for being parallel to module is orientated.In other variations, the length of superbattery may be approximately equal to rectangle solar energy mould The length of the long side of block, and the superbattery is oriented such that their long side is parallel to the long side of solar energy module. The length of superbattery can also be substantially equal to the length of side of square solar energy module, and the superbattery is oriented to So that their long side is parallel to the side of solar energy module.In addition, solar module may include than shown in the example more or more The superbattery of few this length of side.
Fig. 5 B also show the solar energy module 200 of Fig. 5 A wherein respectively the adjacent superbattery in row's superbattery it Between it is very close to each other in the case of appearance.It can also be suitable using any other of the superbattery 100 in solar energy module Arrangement.
The paragraph being exemplified below provides the additional unrestricted aspect of the disclosure.
1.A kind of solar energy module, including：
The solar cell string of a rectangles of N (N >=25) or substantial rectangular that are connected in series with, the solar cell have big In about 10 volts of average voltage breakdown, the solar cell assembles one or more superbatteries, each superbattery Two or more solar cells including the arrangement that is in line, the wherein long side of adjacent solar battery are overlapped and with both The adhesive of conductive heat conduction again is conductively engaged with each other；
Wherein in the solar cell string, without the solar battery group of single solar cell or sum less than N and side The individually electrical connection in parallel of road diode.
2.According to the solar energy module described in clause 1, wherein N is greater than or equal to 30.
3.According to the solar energy module described in clause 1, wherein N is greater than or equal to 50.
4.According to the solar energy module described in clause 1, wherein N is greater than or equal to 100.
5.According to the solar energy module described in clause 1, wherein adhesive forms engagement between adjacent solar battery, The thickness being bonded on solar cell direction is less than or equal to about 0.1mm, and perpendicular to solar cell Thermal conductivity on direction is greater than or equal to about 1.5w/m/k.
6.According to the solar energy module described in clause 1, wherein N number of solar cell is assembled to single super electricity Pond.
7.In the polymer according to the solar energy module described in clause 1, wherein superbattery encapsulation.
7A.According to the solar energy module described in clause 7, wherein the polymer includes thermoplastic olefin polymer.
7B.According to the solar energy module described in clause 7, wherein the polymer is clipped between glass front plate and back plate.
7C.According to the solar energy module described in clause 7B, wherein the back plate includes glass.
8.According to the solar energy module described in clause 1, wherein the solar cell is silicon solar cell.
9.A kind of solar energy module, including：
Superbattery, the superbattery is substantially across the solar energy module at the edge for being parallel to the solar energy module Whole length or width, the superbattery include the solar cell of the N number of rectangle or substantial rectangular that are connected in series with String, the solar cell have greater than about 10 volts of an average voltage breakdown, and the solar cell is in line arrangement, wherein The long side of adjacent solar battery is overlapped and is conductively engaged with each other with the not only conductive but also adhesive of heat conduction；
Wherein in the superbattery, without the solar battery group of single solar cell or sum less than N and bypass two Pole pipe individually electrical connection in parallel.
10.According to the solar energy module described in clause 9, wherein N>24.
11.According to the solar energy module described in clause 9, wherein superbattery has at least about 500mm in the flow direction Length.
12.According to the solar energy module described in clause 9, wherein superbattery, which is encapsulated in, is sandwiched in glass front plate and back plate Between thermoplastic olefin polymer in.
13.A kind of superbattery, including：
Multiple silicon solar cells, each silicon solar cell include：
The front surface and back surface of rectangle or substantial rectangular, the shape on the surface is by being oppositely arranged and the first parallel length Side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar cell string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern is arranged on the front surface and includes at least one of neighbouring first long side setting Front surface engagement pad；And
Conductive back surface metalation pattern is arranged on the back surface and includes at least one of neighbouring second long side setting Back surface engagement pad；
The wherein described silicon solar cell is in line arrangement, the first long side of adjacent silicon solar cell and the overlapping of the second long side, And the front surface engagement pad and back surface engagement pad on adjacent silicon solar cell are overlapped and engage material by conductive adhesive Material is conductively joined to each other, to which silicon solar cell to be electrically connected in series.And
The front surface metallization pattern of wherein each silicon solar cell includes barrier, and the barrier is configured in super electricity During the manufacture in pond, substantially conductive adhesive grafting material is confined to before the solidification of conductive adhesive grafting material At least one front surface engagement pad.
14.According to the superbattery described in clause 13, wherein it is adjacent for every a pair and overlapping silicon solar cell and It says, the barrier in the front surface of a silicon solar cell in the silicon solar cell and another silicon solar cell A part be overlapped and hidden by the part, to during the manufacture of superbattery, material is engaged in conductive adhesive Conductive adhesive grafting material is substantially confined to the overlapping region of the front surface of silicon solar cell before material solidification.
15.According to the superbattery described in clause 13, wherein the barrier includes continuous conductive threads, it is described continuous Conductive threads be parallel to the first long side and the whole length for the first long side of substantially advancing, wherein at least one front surface Engagement pad is between continuous conductive threads and the first long side of solar cell.
16.According to the superbattery described in clause 15, wherein front surface metallization pattern includes finger-shaped material, the finger-like Object is electrically connected at least one front surface engagement pad and advances perpendicular to first long side, and continuously conducts Property line finger-shaped material is electrically interconnected, with provide from each finger-shaped material to multiple conductive paths of at least one front surface engagement pad.
17.According to the superbattery described in clause 13, wherein front surface metallization pattern includes adjacent and parallel to first Long side arranges rows of multiple discrete engagement pads, and the barrier includes forming independent barrier for each discrete engagement pad Multiple features, the multiple feature is during the manufacture of superbattery, before the solidification of conductive adhesive grafting material substantially Conductive adhesive grafting material is confined to discrete engagement pad.
18.According to the superbattery described in clause 17, wherein the independent barrier abut corresponding discrete engagement pad and Higher than the corresponding discrete engagement pad.
19.A kind of superbattery, including：
Multiple silicon solar cells, each silicon solar cell include：
The front surface and back surface of rectangle or substantial rectangular, the shape on the surface is by being oppositely arranged and the first parallel length Side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar cell string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern is arranged on the front surface and includes at least one of neighbouring first long side setting Front surface engagement pad；And
Conductive back surface metalation pattern is arranged on the back surface and includes at least one of neighbouring second long side setting Back surface engagement pad；
The wherein described silicon solar cell is in line arrangement, the first long side of adjacent silicon solar cell and the overlapping of the second long side, And the front surface engagement pad and back surface engagement pad on adjacent silicon solar cell are overlapped and engage material by conductive adhesive Material is conductively joined to each other, to which silicon solar cell to be electrically connected in series.And
The back surface metallization pattern of wherein each silicon solar cell includes barrier, which is configured to super in manufacture During grade battery, substantially conductive adhesive grafting material is confined to before the solidification of conductive adhesive grafting material At least one back surface engagement pad.
20.According to the superbattery described in clause 19, wherein back surface metallization pattern includes neighbouring and is parallel to Two long sides arrange the rows of discrete engagement pad of one or more, and the barrier includes forming list for each discrete engagement pad Multiple features of only barrier, the multiple feature cure during the manufacture of superbattery in conductive adhesive grafting material Conductibility grafting material is substantially confined to discrete engagement pad before.
21.According to the superbattery described in clause 20, wherein the independent barrier abut corresponding discrete engagement pad and Higher than the corresponding discrete engagement pad.
22.A method of solar cell string is made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and formed more A rectangle silicon solar cell, wherein each silicon solar cell is substantially equal along the length of its long axis；And
Rectangle silicon solar cell is in line arrangement, the long side of adjacent solar battery is made to be overlapped and conductively be joined to Each other, to which solar cell to be electrically connected in series；
Wherein the multiple rectangle silicon solar cell includes：There are two at least one rectangle solar cell of chamfering, institutes for tool Chamfering is stated corresponding to the turning of pseudo-square wafers or the part at turning；And respectively lack one or more squares of chamfering Shape silicon solar cell.And
Square wherein by making the width vertical with including the long axis of rectangle silicon solar cell of chamfering be more than and lack chamfering The vertical width of the long axis of shape silicon solar cell, and the spacing between the parallel lines along cutting pseudo-square wafers into Row selection, to compensate chamfering；Therefore, during solar cell string works, multiple rectangular silicons in solar cell string are too The front surface of each battery in positive energy battery, the area being exposed under sunlight are substantially equal.
23.A kind of solar cell string, including：
The multiple silicon solar cells for the arrangement that is in line, the wherein end of adjacent solar battery are overlapped and conductively engage To each other, to which solar cell is electrically connected in series；
Wherein at least one silicon solar cell has chamfering, and the chamfering, which corresponds to from it, cuts the standard of silicon solar cell The turning of square silicon wafer or the part at turning；At least one silicon solar cell lacks chamfering；In solar cell string During work, the area that the front surface of each silicon solar cell is exposed under sunlight is substantially equal.
24.A method of two or more solar cell strings are made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and form tool There is a rectangle silicon solar cell more than the first of chamfering, and lacks more than second a rectangle silicon solar cells of chamfering, wherein The chamfering corresponds to the turning of dead square silicon wafer or the part at turning, a rectangular silicon solar-electricity more than described second There is each battery in pond the first length, the span of first length to be equal to the full duration of dead square silicon wafer；
From each battary removal chamfering in a rectangle silicon solar cell more than first, and the third that formation lacks chamfering is more A rectangle silicon solar cell, each battery in the multiple rectangle silicon solar cells of third have than the first length The second short length；
More than second a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than second a rectangle silicon solar cells is electrically connected in series, width is consequently formed and is equal to the The solar cell string of one length；And
The multiple rectangle silicon solar cells of third are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and the multiple rectangle silicon solar cells of third is electrically connected in series, width is consequently formed and is equal to the The solar cell string of two length.
25.A method of two or more solar cell strings are made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and form tool There is a rectangle silicon solar cell more than the first of chamfering, and lacks more than second a rectangle silicon solar cells of chamfering, wherein The chamfering corresponds to the turning of dead square silicon wafer or the part at turning；
More than first a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than first a rectangle silicon solar cells is electrically connected in series；And
More than second a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than second a rectangle silicon solar cells is electrically connected in series.
26.A method of solar energy module is made, the method includes：
Along each in a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to chip, with Just multiple rectangle silicon solar cells with chamfering are formed by the multiple dead square silicon wafer, and lacks chamfering Multiple rectangle silicon solar cells, wherein the chamfering corresponds to the turning of dead square silicon wafer；
Arrangement lacks at least some of rectangle silicon solar cell of chamfering, forms more than first a superbatteries, each super Battery only includes the rectangle silicon solar cell for lacking chamfering for the arrangement that is in line, wherein the rectangular silicon solar cell Long side is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series；
It arranges at least some of the rectangle silicon solar cell with chamfering, forms more than second a superbatteries, it is each super Battery only includes the straight rectangle silicon solar cell with chamfering of arrangement, wherein the rectangular silicon solar cell Long side is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series；And
Superbattery is arranged to the parallel superbattery row for being substantially equal length, before forming solar energy module Surface, wherein each row only include more than first a superbatteries in superbattery or only include more than second a superbatteries In superbattery.
27.According to the solar energy module described in clause 26, wherein adjacent to solar energy module parallel opposing edges it is super It is two rows of only including the superbattery in more than second a superbatteries in battery row, and every other superbattery row only wraps Include the superbattery in a superbattery more than first.
28.According to the solar energy module described in clause 27, wherein solar energy module includes six row's superbattery in total.
29.A kind of superbattery, including：
The multiple silicon solar cells for the arrangement that is in line in a first direction, wherein the end overlapping of adjacent silicon solar cell And be conductively joined to each other, to which silicon solar cell is electrically connected in series；And
Elongated flexible electrical interconnection, long axis is parallel to the second direction vertical with the first direction and is orientated, described elongated Flexible electrical interconnection have following features：At three or more discrete positions arranged along second direction, conductibility Ground is joined to the front surface or back surface of the silicon solar cell of end one；At least extending end solar energy in a second direction The full duration of battery；Perpendicular to end silicon solar cell front surface or rear surface measure, conductor thickness less than or equal to about 100 microns；The resistance less than or equal to about 0.012 ohm is provided to the electric current flowed in a second direction；It is configured to carry For flexibility, the flexibility is within the temperature range of about -40 DEG C to about 85 DEG C, reconciliation end silicon solar cell and the electrical interconnection Between differential expansion in a second direction.
30.According to the superbattery described in clause 29, wherein the front surface perpendicular to end silicon solar cell and rear table Planar survey, the conductor thickness of flexible electrical interconnection is less than or equal to about 30 microns.
31.According to the superbattery described in clause 29, wherein flexible electrical interconnection extends in this second direction Except the superbattery, so as to will be electrically interconnected provide be positioned to it is parallel simultaneously with the superbattery in solar energy module And adjacent at least the second superbattery.
32.According to the superbattery described in clause 29, wherein flexible electrical interconnection extends to super electricity in a first direction Except pond, so as in solar energy module for the superbattery be in line the second superbattery disposed in parallel provide it is electric mutually Even.
33.A kind of solar energy module, including：
Multiple superbatteries, the multiple superbattery be arranged to span equal to module width two or more are parallel Row, to form the front surface of module, each superbattery includes the multiple silicon solar cells of arrangement of being in line, wherein The end of adjacent silicon solar cell is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series；
At least one end of first superbattery adjacent with the edge of module is electric via flexible electrical interconnection wherein in first row It is connected to one end of the second superbattery adjacent with the same edge of module in second row, the flexibility electrical interconnection has Following features：The front surface of the first superbattery is joined to by electroconductive binder grafting material at multiple discrete positions；It is parallel Extend in the edge of module；Its at least part is folded in around described one end of the first superbattery, thus in front of module It is invisible.
34.According to the solar energy module described in clause 33, the wherein surface of the flexible electrical interconnection in the front surface of module Capped or dyeing, with the visual contrast between mitigation and superbattery.
35.According to the solar energy module described in clause 33, wherein the two or more parallel arrangements of superbattery It sets in white back plate, the solar energy module front surface that will be irradiated by solar radiation during being formed in the operation of solar energy module, The white back plate includes parallel dark-coloured striped, and the position of the dead color striped corresponds to parallel superbattery with width The position in gap and width between row, and the white portion of the back plate is invisible by the gap between the row.
36.A method of solar cell string is made, the method includes：
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, to Multiple rectangular areas are defined on silicon solar cell；
In one or more positions of the long side of neighbouring each rectangular area, electroconductive binder grafting material is applied to one Or on the silicon solar cell painted at multiple quarters；
Silicon solar cell is divided along line drawing is carved, obtains the silicon solar cell of multiple rectangles, the silicon solar of each rectangle All position adjacent with long side on its front surface is arranged in some electroconductive binder grafting material on battery；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell to cover Mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Conductive bonding material is set to cure, to which adjacent overlapping rectangles silicon solar cell engagement be arrived each other, and these are electric Pond is electrically connected in series.
37.A method of solar cell string is made, the method includes：
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, to Multiple rectangular areas are defined on silicon solar cell, each solar cell includes the bottom of top surface and opposite facing setting Surface；
Electroconductive binder grafting material is applied in the multiple portions of the top surface of one or more silicon solar cells；
The applying vacuum between the bottom surface of one or more silicon solar cells and the support surface of bending, so that one Or the support surface of multiple silicon solar cells against bending is bent, and cause one or more silicon solar cells along quarter Line drawing is cut, and then obtains the silicon solar cell of multiple rectangles, some is led on the silicon solar cell of each rectangle Position adjacent with long side on its front surface is arranged in electric adhesive bond material；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell to cover Mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Conductive bonding material is set to cure, to which adjacent overlapping rectangles silicon solar cell engagement be arrived each other, and these are electric Pond is electrically connected in series.
38.It is applied to one or more silicon too according to the method described in clause 37, including by electroconductive binder grafting material On positive energy battery, then marked for one or more quarter with laser on each battery in one or more silicon solar cells Line drawing.
39.Include being used on each battery in one or more silicon solar cells according to the method described in clause 37 Laser mark one or more quarter line drawing, electroconductive binder grafting material is then applied to one or more silicon solars electricity Chi Shang.
40.A kind of solar energy module, including：
Multiple superbatteries, the multiple superbattery are arranged to two or more parallel rows, form solar energy module Front surface, each superbattery includes the multiple silicon solar cells of arrangement of being in line, wherein adjacent silicon solar cell End is overlapped and is conductively joined to each other, and to which silicon solar cell to be electrically connected in series, each superbattery includes position In the front surface terminal contacts of superbattery at one end and the back surface with opposite polarity at the opposite end of superbattery Terminal contacts；
Wherein first row superbattery includes the first superbattery, and first superbattery is arranged so that its front surface end Terminal contacts are adjacent and parallel to the first edge of solar energy module, and solar energy module includes the first flexible electrical interconnection, institute Stating the first flexible electrical interconnection is elongated and has following features：The first edge for being parallel to solar energy module extends；It leads It is electrically coupled to the front surface terminal contacts of the first superbattery；Only occupy neighbouring solar energy mould in the front surface of solar energy module The narrower part of block first edge；First edge perpendicular to solar energy module measures, and width is no more than about 1 centimetre.
41.According to the solar energy module described in clause 40, wherein a part for the first flexible electrical interconnection surrounds and the first surpasses The end nearest from solar energy module first edge of grade battery extends, and behind the first superbattery.
42.According to the solar energy module described in clause 40, wherein the first flexible interconnection includes conductively being joined to the The strip part of the front surface terminal contacts of one superbattery, and be parallel to solar energy module first edge extend compared with Thickness portion.
43.According to the solar energy module described in clause 40, wherein first flexible interconnection includes conductive bond to described The strip part of the front surface terminal contacts of first superbattery, and be parallel to the first edge of solar energy module and prolong The winding band part stretched.
44.According to the solar energy module described in clause 40, wherein second row superbattery includes the second superbattery, institute The first edge that the second superbattery is arranged so that its front surface terminal contacts adjacent and parallel to solar energy module is stated, and And first superbattery front surface terminal contacts be electrically connected to the second superbattery via the first flexible electrical interconnection before Face extremities contact.
45.According to the solar energy module described in clause 40, wherein the back surface terminal contacts of the first superbattery it is neighbouring and It is parallel to the solar energy module second edge opposite with solar energy module first edge, the back surface terminal contacts include the Two flexible electrical interconnections, the described second flexible electrical interconnection are elongated and have following features：It is parallel to solar energy module Second edge extend；Conductively it is joined to the back surface terminal contacts of the first superbattery；And it is fully located at super electricity Behind pond.
46.According to the solar energy module described in clause 45, wherein：
Second row superbattery includes the second superbattery, and second superbattery is arranged such that its front surface end Contact is adjacent and parallel to the first edge of solar energy module, and its back surface terminal contacts is adjacent and parallel to solar energy The second edge of module；
The front surface terminal contacts of first superbattery are electrically connected to the second superbattery via the first flexible electrical interconnection Front surface terminal contacts；And
The back surface terminal contacts of first superbattery are electrically connected to the second superbattery via the second flexible electrical interconnection Back surface terminal contacts.
47.According to the solar energy module described in clause 40, including：
Second superbattery, second superbattery are arranged in first row superbattery and the first superbattery string Connection, and the neighbouring solar energy opposite with solar energy module first edge of back surface terminal contacts of second superbattery Module second edge；And
Second flexible electrical interconnection, the described second flexible electrical interconnection are elongated and have following features：It is parallel to the sun The second edge of energy module extends；Conductively it is joined to the back surface terminal contacts of the first superbattery；And it is fully located at Behind the superbattery.
48.According to the solar energy module described in clause 47, wherein：
Second row superbattery includes the third superbattery and the 4th superbattery of arranged in series, wherein third superbattery Front surface terminal contacts adjacent to the first edge of solar energy module, and the back surface terminal contacts of the 4th superbattery are adjacent The second edge of nearly solar energy module；And
The front surface terminal contacts of first superbattery are electrically connected to third superbattery via the first flexible electrical interconnection Front surface terminal contacts, and the back surface terminal contacts of the second superbattery are electrically connected via the second flexible electrical interconnection To the back surface terminal contacts of the 4th superbattery.
49.According to the solar energy module described in clause 40, wherein superbattery is arranged in white back plate, the white Back plate includes parallel dark-coloured striped, between the position of the dead color striped and width correspond between parallel superbattery row The position of gap and width, and the white portion of the back plate is invisible by the gap between the row.
50.According to the solar energy module described in clause 40, wherein first in the front surface of solar energy module is flexible All parts of electrical interconnection are capped or dye, with the visual contrast between mitigation and superbattery.
51.According to the solar energy module described in clause 40, wherein：
Each silicon solar cell includes：
The front surface and back surface of rectangle or substantial rectangular, the shape on the surface is by being oppositely arranged and the first parallel length Side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar cell string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and include the multiple finger-shaped materials extended perpendicular to long side And rows of multiple discrete front surface engagement pads are arranged in neighbouring first long side, each front surface engagement pad is electrically connected to described At least one of finger-shaped material；And
Conductive back surface metalation pattern is arranged on the back surface and includes that neighbouring second long side setting is rows of multiple Discrete back surface engagement pad；And
In each superbattery, the silicon solar cell is in line arrangement, wherein the first length of adjacent silicon solar cell Side and the overlapping of the second long side, and corresponding discrete front surface engagement pad and discrete back surface connect on adjacent silicon solar cell Touch pad is aligned with each other, is overlapped and is conductively joined to each other by conductive adhesive grafting material, to which silicon solar is electric Pond is electrically connected in series.
52.According to the solar energy module described in clause 51, wherein the front surface metallization pattern of each silicon solar cell Include multiple thin conducting wires that adjacent discrete front surface engagement pad is electrically interconnected, and each thin conducting wire ratio is perpendicular to solar energy The discrete engagement pad width that the long side of battery measures is thinner.
53.According to the solar energy module described in clause 51, wherein conductive adhesive grafting material passes through front surface metal Change the feature of pattern and be substantially confined to the position of discrete front surface engagement pad, the feature forms neighbouring discrete front surface One or more barriers of engagement pad.
54.According to the solar energy module described in clause 51, wherein conductive adhesive grafting material passes through back surface metal Change the feature of pattern and be substantially confined to the position of discrete back surface engagement pad, the feature forms neighbouring discrete back surface One or more barriers of engagement pad.
55.A method of solar energy module is made, the method includes：
Multiple superbatteries are assembled, each superbattery includes the multiple rectangle silicon solar cells for the arrangement that is in line, and holds Portion is overlapped in the long side of adjacent rectangle silicon solar cell in a manner of covering；
Apply heat and pressure to superbattery, and makes to be arranged between the overlapped ends of adjacent rectangle silicon solar cell Conductive bonding material cures, and to arrive each other adjacent overlapping rectangles silicon solar cell engagement, and these batteries is connected Electrical connection；
It is constructed by required solar energy module, superbattery is arranged and is mutually linked as the lamination stack with encapsulant；And
Apply heat and pressure to the lamination stack, to form laminate structures.
56.According to the method described in clause 55, be included in lamination stack apply heat and pressure with formed laminate structures it Before, it is cured or partially cured the conductive bonding material by the way that heat and pressure are applied to superbattery, to form solidification Or partially cured superbattery, as the intermediate products before formation laminate structures.
57.According to the method described in clause 56, wherein when inciting somebody to action each additional rectangular silicon during assembling superbattery too When positive energy battery is added to superbattery, first make between newly added solar cell and adjacent Chong Die solar cell Electroconductive binder grafting material is cured or partially cured, then another rectangle silicon solar cell is added to superbattery.
58.According to the method described in clause 56, it is included in conductive bond material all in superbattery in same step Material is cured or partially cured.
59.According to the method described in clause 56, including：
Applying heat and pressure to lamination stack with before forming laminate structures, by by heat and pressure be applied to superbattery come The partially cured conductive bonding material, to form the cured superbattery in part, in before formation laminate structures Between product；And
While applying heat and pressure to lamination stack to form laminate structures, the solidification of conductive bonding material is completed.
60.According to the method described in clause 55, it is included in lamination stack and applies heat and pressure to form the same of laminate structures When, conductive bonding material is cured, is formed before laminate structures without forming the superbattery being cured or partially cured conduct Intermediate products.
61.It is in a rectangular shape according to the method described in clause 55, including by the cutting of one or more silicon solar cells, And provide the silicon solar cell of rectangle.
62.It is before being included in the one or more silicon solar cells of cutting that conduction is viscous according to the method described in clause 61 Mixture grafting material is applied to one or more of silicon solar cells, is connect in order to provide electroconductive binder is coated in advance The rectangle silicon solar cell of condensation material.
63.It is applied to one or more silicon too according to the method described in clause 62, including by electroconductive binder grafting material On positive energy battery, then one or more is marked with laser on each battery in one or more of silicon solar cells Bar line, then by one or more of silicon solar cells along carving line drawing cutting.
64.According to the method described in clause 62, each battery for being included in one or more of silicon solar cells On with laser mark one or more line, electroconductive binder grafting material is then applied to one or more of silicon sun On energy battery, then by one or more of silicon solar cells along quarter line drawing cutting.
65.According to the method described in clause 62, wherein electroconductive binder grafting material is applied to one or more silicon too It is every in one or more of silicon solar cells without being applied on the top surface of each battery in positive energy battery In the bottom surface of the opposite facing setting of a battery, be included in the bottom surfaces of one or more of silicon solar cells with Applying vacuum between the support surface of bending, so that support surface of one or more of silicon solar cells against bending Bending, to cut one or more of silicon solar cells along line drawing is carved.
66.According to the method described in clause 61, it is included in the one or more silicon solar cells of cutting to provide rectangular silicon After solar cell, electroconductive binder grafting material is applied on rectangle silicon solar cell.
67.According to the method described in clause 55, wherein conductive adhesive grafting material has less than or equal to about 0 DEG C Glass transition temperature.
1A.A kind of solar energy module, including：
Multiple superbatteries, the multiple superbattery are arranged to two or more parallel rows, form solar energy module Front surface, each superbattery includes the multiple silicon solar cells of arrangement of being in line, wherein adjacent silicon solar cell End is overlapped and is conductively joined to each other, and to which silicon solar cell to be electrically connected in series, each superbattery includes position In the front surface terminal contacts of superbattery at one end and the back surface with opposite polarity at the opposite end of superbattery Terminal contacts；
Wherein first row superbattery includes the first superbattery, and first superbattery is arranged so that its front surface end Terminal contacts are adjacent and parallel to the first edge of solar energy module, and solar energy module includes the first flexible electrical interconnection, institute Stating the first flexible electrical interconnection is elongated and has following features：The first edge for being parallel to solar energy module extends；It leads It is electrically coupled to the front surface terminal contacts of the first superbattery；Only occupy neighbouring solar energy mould in the front surface of solar energy module The narrower part of block first edge；First edge perpendicular to solar energy module measures, and width is no more than about 1 centimetre.
2A.According to the solar energy module described in clause 1A, wherein a part for the first flexible electrical interconnection surrounds and the first surpasses The end nearest from solar energy module first edge of grade battery extends, and behind the first superbattery.
3A.According to the solar energy module described in clause 1A, wherein the first flexible interconnection includes conductively being joined to the The strip part of the front surface terminal contacts of one superbattery, and be parallel to solar energy module first edge extend compared with Thickness portion.
4A.According to the solar energy module described in clause 1A, wherein first flexible interconnection includes conductive bond to described The strip part of the front surface terminal contacts of first superbattery, and be parallel to the first edge of solar energy module and prolong The winding band part stretched.
5A.According to the solar energy module described in clause 1A, wherein second row superbattery includes the second superbattery, institute The first edge that the second superbattery is arranged so that its front surface terminal contacts adjacent and parallel to solar energy module is stated, and And first superbattery front surface terminal contacts be electrically connected to the second superbattery via the first flexible electrical interconnection before Face extremities contact.
6A.According to the solar energy module described in clause 1A, wherein the back surface terminal contacts of the first superbattery it is neighbouring and It is parallel to the solar energy module second edge opposite with solar energy module first edge, the back surface terminal contacts include the Two flexible electrical interconnections, the described second flexible electrical interconnection are elongated and have following features：It is parallel to solar energy module Second edge extend；Conductively it is joined to the back surface terminal contacts of the first superbattery；And it is fully located at super electricity Behind pond.
7A.According to the solar energy module described in clause 6A, wherein：
Second row superbattery includes the second superbattery, and second superbattery is arranged such that its front surface end Contact is adjacent and parallel to the first edge of solar energy module, and its back surface terminal contacts is adjacent and parallel to solar energy The second edge of module；
The front surface terminal contacts of first superbattery are electrically connected to the second superbattery via the first flexible electrical interconnection Front surface terminal contacts；And
The back surface terminal contacts of first superbattery are electrically connected to the second superbattery via the second flexible electrical interconnection Back surface terminal contacts.
8A.According to the solar energy module described in clause 1A, including：
Second superbattery, second superbattery are arranged in first row superbattery and the first superbattery string Connection, and the neighbouring solar energy opposite with solar energy module first edge of back surface terminal contacts of second superbattery Module second edge；And
Second flexible electrical interconnection, the described second flexible electrical interconnection are elongated and have following features：It is parallel to the sun The second edge of energy module extends；Conductively it is joined to the back surface terminal contacts of the first superbattery；And it is fully located at Behind the superbattery.
9A.According to the solar energy module described in clause 8A, wherein：
Second row superbattery includes the third superbattery and the 4th superbattery of arranged in series, wherein third superbattery Front surface terminal contacts adjacent to the first edge of solar energy module, and the back surface terminal contacts of the 4th superbattery are adjacent The second edge of nearly solar energy module；And
The front surface terminal contacts of first superbattery are electrically connected to third superbattery via the first flexible electrical interconnection Front surface terminal contacts, and the back surface terminal contacts of the second superbattery are electrically connected via the second flexible electrical interconnection To the back surface terminal contacts of the 4th superbattery.
10A.According to the solar energy module described in clause 1A, wherein the external margin far from solar energy module, superbattery Between there is no that the electrical interconnection of the effective coverage of the front surface of module can be reduced.
11A.According to the solar energy module described in clause 1A, wherein at least a pair of of superbattery is in line cloth in a row Set, and this to one rear surface contact jaw in superbattery adjacent to this to another the rear surface in superbattery Contact jaw.
12A.According to the solar energy module described in clause 1A, wherein：
At least a pair of of superbattery is in line arrangement in a row, and the adjacent end of the two superbatteries has on the contrary Polar terminal contacts；
This to superbattery adjacent end overlapping；And
This is electrically connected in series the superbattery in superbattery by flexible interconnection, and first interconnection piece is clipped in super electricity Between the overlapping end in pond and do not block front surface.
13A.According to the solar energy module described in clause 1A, wherein superbattery is arranged in white back plate, the white Backer board includes parallel dark-coloured striped, and the position of the dead color striped and width correspond between parallel superbattery row The position in gap and width, and the white portion of the backer board is invisible by the gap between the row.
14A.According to the solar energy module described in clause 1A, wherein first in the front surface of solar energy module is soft Property electrical interconnection all parts are capped or dyeing, with the visual contrast between mitigation and superbattery.
15A.According to the solar energy module described in clause 1A, wherein：
Each silicon solar cell includes：
The front surface and back surface of rectangle or substantial rectangular, the shape on the surface is by being oppositely arranged and the first parallel length Side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar cell string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and include the multiple finger-shaped materials extended perpendicular to long side And rows of multiple discrete front surface engagement pads are arranged in neighbouring first long side, each front surface engagement pad is electrically connected to described At least one of finger-shaped material；And
Conductive back surface metalation pattern is arranged on the back surface and includes that neighbouring second long side setting is rows of multiple Discrete back surface engagement pad；And
In each superbattery, the silicon solar cell is in line arrangement, wherein the first length of adjacent silicon solar cell Side and the overlapping of the second long side, and corresponding discrete front surface engagement pad and discrete back surface connect on adjacent silicon solar cell Touch pad is aligned with each other, is overlapped and is conductively joined to each other by conductive adhesive grafting material, to which silicon solar is electric Pond is electrically connected in series.
16A.According to the solar energy module described in clause 15A, wherein the front surface metallization figure of each silicon solar cell Case includes multiple thin conducting wires that adjacent discrete front surface engagement pad is electrically interconnected, and each thin conducting wire ratio is perpendicular to the sun The discrete engagement pad width that the long side of energy battery measures is thinner.
17A.According to the solar energy module described in clause 15A, wherein conductive adhesive grafting material passes through front surface gold The feature of categoryization pattern and the position for being substantially confined to discrete front surface engagement pad, the feature are formed around each discrete The barrier of front surface engagement pad.
18A.According to the solar energy module described in clause 15A, wherein conductive adhesive grafting material passes through back surface gold The feature of categoryization pattern and the position for being substantially confined to discrete back surface engagement pad, the feature are formed around each discrete The barrier of back surface engagement pad.
19A.According to the solar energy module described in clause 15A, connect wherein discrete back surface engagement pad is discrete silver-colored back surface Touch pad, and other than the discrete silver-colored back surface engagement pad, the back surface metallization pattern of each silicon solar cell is simultaneously It is not included at any position below the not part Chong Die with adjacent silicon solar cell in solar cell front surface Silver contact.
20A.A kind of solar energy module, including：
Multiple superbatteries, each superbattery include the multiple silicon solar cells for the arrangement that is in line, wherein adjacent silicon too The end of positive energy battery is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series；
Wherein each silicon solar cell includes：
The front surface and back surface of rectangle or substantial rectangular, the shape on the surface is by being oppositely arranged and the first parallel length Side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar cell string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and include the multiple finger-shaped materials extended perpendicular to long side And rows of multiple discrete front surface engagement pads are arranged in neighbouring first long side；
It is electrically connected to each front surface engagement pad of at least one of finger-shaped material finger-shaped material；And
Conductive back surface metalation pattern is arranged on the back surface and includes that neighbouring second long side setting is rows of multiple Discrete back surface engagement pad；
Wherein in each superbattery, the silicon solar cell is in line arrangement, wherein the of adjacent silicon solar cell One long side and the overlapping of the second long side, and corresponding discrete front surface engagement pad and discrete back of the body table on adjacent silicon solar cell Face engagement pad is aligned with each other, is overlapped and is conductively joined to each other by conductive adhesive grafting material, thus by the silicon sun Energy battery is electrically connected in series.And
Wherein superbattery is arranged to substantially across the length of solar energy module or the single of width is arranged or two or more A parallel, the solar energy module front surface that will be irradiated by solar radiation during being formed in the operation of solar energy module.
21A.According to the solar energy module described in clause 20A, connect wherein discrete back surface engagement pad is discrete silver-colored back surface Touch pad, and other than the discrete silver-colored back surface engagement pad, the back surface metallization pattern of each silicon solar cell is simultaneously It is not included at any position below the not part Chong Die with adjacent silicon solar cell in solar cell front surface Silver contact.
22A.According to the solar energy module described in clause 20A, wherein the front surface metallization figure of each silicon solar cell Case includes multiple thin conducting wires that adjacent discrete front surface engagement pad is electrically interconnected, and each thin conducting wire ratio is perpendicular to the sun The discrete engagement pad width that the long side of energy battery measures is thinner.
23A.According to the solar energy module described in clause 20A, wherein conductive adhesive grafting material passes through front surface gold The feature of categoryization pattern and the position for being substantially confined to discrete front surface engagement pad, the feature are formed around each discrete The barrier of front surface engagement pad.
24A.According to the solar energy module described in clause 20A, wherein conductive adhesive grafting material passes through back surface gold The feature of categoryization pattern and the position for being substantially confined to discrete back surface engagement pad, the feature are formed around each discrete The barrier of back surface engagement pad.
25A.A kind of superbattery, including：
Multiple silicon solar cells, each silicon solar cell include：
The front surface and back surface of rectangle or substantial rectangular, the shape on the surface is by being oppositely arranged and the first parallel length Side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar cell string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and include the multiple finger-shaped materials extended perpendicular to long side And rows of multiple discrete front surface engagement pads are arranged in neighbouring first long side, each front surface engagement pad is electrically connected to described At least one of finger-shaped material；And
Conductive back surface metalation pattern is arranged on the back surface and includes that neighbouring second long side setting is rows of multiple Discrete silver back surface engagement pad；
The wherein described silicon solar cell is in line arrangement, wherein the first long side and the second long side of adjacent silicon solar cell Overlapping, and on adjacent silicon solar cell corresponding discrete front surface engagement pad and discrete back surface engagement pad it is aligned with each other, It is overlapped and is conductively joined to each other by conductive adhesive grafting material, to which silicon solar cell to be electrically connected in series.
26A.According to the solar energy module described in clause 25A, connect wherein discrete back surface engagement pad is discrete silver-colored back surface Touch pad, and other than the discrete silver-colored back surface engagement pad, the back surface metallization pattern of each silicon solar cell is simultaneously It is not included at any position below the not part Chong Die with adjacent silicon solar cell in solar cell front surface Silver contact.
27A.Solar cell string according to clause 25A, wherein front surface metallization pattern include by adjacent point Multiple thin conducting wires that vertical front surface engagement pad is electrically interconnected, and each thin conducting wire is measured than the long side perpendicular to solar cell Discrete engagement pad width it is thinner.
28A.Solar cell string according to clause 25A, wherein conductive adhesive grafting material pass through front surface The feature of metallization pattern and the position for being substantially confined to discrete front surface engagement pad, the feature are formed around each point The barrier of vertical front surface engagement pad.
29A.Solar cell string according to clause 25A, wherein conductive adhesive grafting material pass through back surface The feature of metallization pattern and the position for being substantially confined to discrete back surface engagement pad, the feature are formed around each point The barrier of vertical back surface engagement pad.
30A.Solar cell string according to clause 25A, wherein conductive adhesive grafting material have be less than or Glass transition temperature equal to about 0 DEG C.
31A.A method of solar energy module is made, the method includes：
Multiple superbatteries are assembled, each superbattery includes the multiple rectangle silicon solar cells for the arrangement that is in line, and holds Portion is overlapped in the long side of adjacent rectangle silicon solar cell in a manner of covering；
Apply heat and pressure to superbattery, and makes to be arranged between the overlapped ends of adjacent rectangle silicon solar cell Conductive bonding material cures, and to arrive each other adjacent overlapping rectangles silicon solar cell engagement, and these batteries is connected Electrical connection；
It is constructed by required solar energy module, superbattery is arranged and is mutually linked as the lamination stack with encapsulant；And
Apply heat and pressure to the lamination stack, to form laminate structures.
32A.According to the method described in clause 31A, be included in lamination stack apply heat and pressure with formed laminate structures it Before, it is cured or partially cured the conductive bonding material by the way that heat and pressure are applied to superbattery, to form solidification Or partially cured superbattery, as the intermediate products before formation laminate structures.
33A.According to the method described in clause 32A, wherein when will each additional rectangular silicon during assembling superbattery When solar cell is added to superbattery, first make between newly added solar cell and adjacent overlapping solar cell Electroconductive binder grafting material be cured or partially cured, then another rectangle silicon solar cell is added to superbattery.
34A.According to the method described in clause 32A, it is included in conductive bond all in superbattery in same step Material solidification is partially cured.
35A.According to the method described in clause 32A, including：
Applying heat and pressure to lamination stack with before forming laminate structures, by by heat and pressure be applied to superbattery come The partially cured conductive bonding material, to form the cured superbattery in part, in before formation laminate structures Between product；And
While applying heat and pressure to lamination stack to form laminate structures, the solidification of conductive bonding material is completed.
36A.According to the method described in clause 31A, it is included in lamination stack and applies heat and pressure to form laminate structures Meanwhile conductive bonding material is cured, without formed the superbattery that is cured or partially cured as formed laminate structures it Preceding intermediate products.
37A.Rectangular shape is cut according to the method described in clause 31A, including by one or more silicon solar cells Shape, and the silicon solar cell of rectangle is provided.
38A.According to the method described in clause 37A, being included in the one or more silicon solar cells of cutting before will be conductive Adhesive bond material is applied to one or more of silicon solar cells, in order to provide electroconductive binder is coated in advance The rectangle silicon solar cell of grafting material.
39A.It is applied to one or more silicon according to the method described in clause 38A, including by electroconductive binder grafting material On solar cell, then on each battery in one or more of silicon solar cells with laser mark one or A plurality of line, then one or more of silicon solar cells are cut along line drawing is carved.
40A.According to the method described in clause 38A, each electricity for being included in one or more of silicon solar cells One or more line is marked with laser on pond, electroconductive binder grafting material is then applied to one or more of silicon too On positive energy battery, then by one or more of silicon solar cells along quarter line drawing cutting.
41A.According to the method described in clause 38A, wherein electroconductive binder grafting material is applied to one or more silicon On the top surface of each battery in solar cell, without being applied in one or more of silicon solar cells In the bottom surface of the opposite facing setting of each battery, it is included in the bottom surface of one or more of silicon solar cells The applying vacuum between the support surface of bending, so that support table of one or more of silicon solar cells against bending Face is bent, to cut one or more of silicon solar cells along line drawing is carved.
42A.According to the method described in clause 37A, it is included in the one or more silicon solar cells of cutting to provide rectangle After silicon solar cell, electroconductive binder grafting material is applied on rectangle silicon solar cell.
43A.According to the method described in clause 31A, wherein conductive adhesive grafting material has less than or equal to about 0 DEG C glass transition temperature.
44A.A method of solar cell is made, the method includes：
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, to Multiple rectangular areas are defined on silicon solar cell；In one or more positions of the long side of neighbouring each rectangular area, will lead Electric adhesive bond material is applied on one or more silicon solar cells carved and painted；
Silicon solar cell is divided along line drawing is carved, obtains the silicon solar cell of multiple rectangles, the silicon solar of each rectangle All position adjacent with long side on its front surface is arranged in some electroconductive binder grafting material on battery；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell to cover Mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Conductive bonding material is set to cure, to which adjacent overlapping rectangles silicon solar cell engagement be arrived each other, and these are electric Pond is electrically connected in series.
45A.A method of solar cell is made, the method includes：
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, to Multiple rectangular areas are defined on silicon solar cell, each solar cell includes the bottom of top surface and opposite facing setting Surface；
Electroconductive binder grafting material is applied in the multiple portions of the top surface of one or more silicon solar cells；
The applying vacuum between the bottom surface of one or more silicon solar cells and the support surface of bending, so that one Or the support surface of multiple silicon solar cells against bending is bent, and cause one or more silicon solar cells along quarter Line drawing is cut, and then obtains the silicon solar cell of multiple rectangles, some is led on the silicon solar cell of each rectangle Position adjacent with long side on its front surface is arranged in electric adhesive bond material；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell to cover Mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Conductive bonding material is set to cure, to which adjacent overlapping rectangles silicon solar cell engagement be arrived each other, and these are electric Pond is electrically connected in series.
46A.A method of solar cell is made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and formed more A rectangle silicon solar cell, wherein each silicon solar cell is substantially equal along the length of its long axis；And
Rectangle silicon solar cell is in line arrangement, the long side of adjacent solar battery is made to be overlapped and conductively be joined to Each other, to which solar cell to be electrically connected in series；
Wherein the multiple rectangle silicon solar cell includes：There are two at least one rectangle solar cell of chamfering, institutes for tool Chamfering is stated corresponding to the turning of pseudo-square wafers or the part at turning；And respectively lack one or more squares of chamfering Shape silicon solar cell.And
Square wherein by making the width vertical with including the long axis of rectangle silicon solar cell of chamfering be more than and lack chamfering The vertical width of the long axis of shape silicon solar cell, and the spacing between the parallel lines along cutting pseudo-square wafers into Row selection, to compensate chamfering；Therefore, during solar cell string works, multiple rectangular silicons in solar cell string are too The front surface of each battery in positive energy battery, the area being exposed under sunlight are substantially equal.
47A.A kind of superbattery, including：
The multiple silicon solar cells for the arrangement that is in line, the wherein end of adjacent solar battery are overlapped and conductively engage To each other, to which solar cell is electrically connected in series；
Wherein at least one silicon solar cell has chamfering, and the chamfering, which corresponds to from it, cuts the standard of silicon solar cell The turning of square silicon wafer or the part at turning；At least one silicon solar cell lacks chamfering；In solar cell string During work, the area that the front surface of each silicon solar cell is exposed under sunlight is substantially equal.
48A.A method of two or more superbatteries are made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and form tool There is a rectangle silicon solar cell more than the first of chamfering, and lacks more than second a rectangle silicon solar cells of chamfering, wherein The chamfering corresponds to the turning of dead square silicon wafer or the part at turning, a rectangular silicon solar-electricity more than described second There is each battery in pond the first length, the span of first length to be equal to the full duration of dead square silicon wafer；
From each battary removal chamfering in a rectangle silicon solar cell more than first, and the third that formation lacks chamfering is more A rectangle silicon solar cell, each battery in the multiple rectangle silicon solar cells of third have than the first length The second short length；
More than second a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than second a rectangle silicon solar cells is electrically connected in series, width is consequently formed and is equal to the The solar cell string of one length；And
The multiple rectangle silicon solar cells of third are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and the multiple rectangle silicon solar cells of third is electrically connected in series, width is consequently formed and is equal to the The solar cell string of two length.
49A.A method of two or more superbatteries are made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and form tool There is a rectangle silicon solar cell more than the first of chamfering, and lacks more than second a rectangle silicon solar cells of chamfering, wherein The chamfering corresponds to the turning of dead square silicon wafer or the part at turning；
More than first a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than first a rectangle silicon solar cells is electrically connected in series；And
More than second a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than second a rectangle silicon solar cells is electrically connected in series.
50A.A kind of solar energy module, including：
The solar cell of N >=25 rectangle or substantial rectangular that a string are connected in series with, the solar cell averagely have Greater than about 10 volts of breakdown voltage, the solar cell assemble one or more superbatteries, and each superbattery wraps Include two or more solar cells for the arrangement that is in line, wherein the long side overlapping of adjacent solar battery and with both leading The adhesive of electric heat conduction again is conductively joined to each other；
Wherein in the solar cell string, without the solar battery group of single solar cell or sum less than N and side The individually electrical connection in parallel of road diode.
51A.According to the solar energy module described in clause 50A, wherein N is greater than or equal to 30.
52A.According to the solar energy module described in clause 50A, wherein N is greater than or equal to 50.
53A.According to the solar energy module described in clause 50A, wherein N is greater than or equal to 100.
54A.According to the solar energy module described in clause 50A, wherein adhesive is formed between adjacent solar battery and is connect It closes, the thickness being bonded on solar cell direction is less than or equal to about 0.1mm, and perpendicular to solar energy Thermal conductivity on battery direction is greater than or equal to about 1.5w/m/k.
55A.According to the solar energy module described in clause 50A, wherein N number of solar cell is assembled to individually surpass Grade battery.
56A.According to the solar energy module described in clause 50A, wherein the solar cell is silicon solar cell.
57A.A kind of solar energy module, including：
Superbattery, the superbattery is substantially across the solar energy module at the edge for being parallel to the solar energy module Whole length or width, the superbattery include the solar cell of the N number of rectangle or substantial rectangular that are connected in series with String, the solar cell have greater than about 10 volts of an average voltage breakdown, and the solar cell is in line arrangement, wherein The long side of adjacent solar battery is overlapped and is conductively engaged with each other with the not only conductive but also adhesive of heat conduction；
Wherein in the superbattery, without the solar battery group of single solar cell or sum less than N and bypass two Pole pipe individually electrical connection in parallel.
58A.According to the solar energy module described in clause 57A, wherein N>24.
59A.According to the solar energy module described in clause 57A, wherein superbattery has at least about in the flow direction The length of 500mm.
60A.A kind of superbattery, including：
Multiple silicon solar cells, each silicon solar cell include：
The front surface and back surface of rectangle or substantial rectangular, the shape on the surface is by being oppositely arranged and the first parallel length Side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar cell string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern is arranged on the front surface and includes at least one of neighbouring first long side setting Front surface engagement pad；And
Conductive back surface metalation pattern is arranged on the back surface and includes at least one of neighbouring second long side setting Back surface engagement pad；
The wherein described silicon solar cell is in line arrangement, the first long side of adjacent silicon solar cell and the overlapping of the second long side, And the front surface engagement pad and back surface engagement pad on adjacent silicon solar cell are overlapped and engage material by conductive adhesive Material is conductively joined to each other, to which silicon solar cell to be electrically connected in series.And
The front surface metallization pattern of wherein each silicon solar cell includes barrier, which is configured to super in manufacture During grade battery, substantially conductive adhesive grafting material is confined to before the solidification of conductive adhesive grafting material At least one front surface engagement pad.
61A.According to the superbattery described in clause 60A, wherein adjacent for every a pair and overlapping silicon solar cell For, the barrier in the front surface of a silicon solar cell in the silicon solar cell and another silicon solar electricity The part in pond is overlapped and is hidden by the part, to during the manufacture of superbattery, be engaged in conductive adhesive Conductive adhesive grafting material is substantially confined to the overlapping region of the front surface of silicon solar cell before material solidification.
62A.According to the superbattery described in clause 60A, wherein the barrier includes continuous conductive threads, the company Continuous conductive threads are parallel to the first long side and the whole length of the first long side of substantially advancing, table before wherein at least one Face engagement pad is between continuous conductive threads and the first long side of solar cell.
63A.According to the superbattery described in clause 62A, wherein front surface metallization pattern includes finger-shaped material, the finger Shape object is electrically connected at least one front surface engagement pad and advances perpendicular to first long side, and continuously passes Finger-shaped material is electrically interconnected the property led line, to provide multiple conductibility roads from each finger-shaped material at least one front surface engagement pad Diameter.
64A.According to the superbattery described in clause 60A, wherein front surface metallization pattern includes adjacent and parallel to One long side arranges rows of multiple discrete engagement pads, and the barrier includes forming independent barrier for each discrete engagement pad Multiple features, the multiple feature is big before the solidification of conductive adhesive grafting material during the manufacture of superbattery Conductive adhesive grafting material is confined to discrete engagement pad by body.
65A.According to the superbattery described in clause 64A, wherein the independent barrier abuts corresponding discrete engagement pad simultaneously And it is higher than the corresponding discrete engagement pad.
66A.A kind of superbattery, including：
Multiple silicon solar cells, each silicon solar cell include：
The front surface and back surface of rectangle or substantial rectangular, the shape on the surface is by being oppositely arranged and the first parallel length Side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar cell string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern is arranged on the front surface and includes at least one of neighbouring first long side setting Front surface engagement pad；And
Conductive back surface metalation pattern is arranged on the back surface and includes at least one of neighbouring second long side setting Back surface engagement pad；
The wherein described silicon solar cell is in line arrangement, the first long side of adjacent silicon solar cell and the overlapping of the second long side, And the front surface engagement pad and back surface engagement pad on adjacent silicon solar cell are overlapped and engage material by conductive adhesive Material is conductively joined to each other, to which silicon solar cell to be electrically connected in series.And
The back surface metallization pattern of wherein each silicon solar cell includes barrier, which is configured to super in manufacture During grade battery, substantially conductive adhesive grafting material is confined to before the solidification of conductive adhesive grafting material At least one back surface engagement pad.
67A.According to the superbattery described in clause 66A, wherein back surface metallization pattern includes neighbouring and is parallel to Second long side arranges the rows of discrete engagement pad of one or more, and the barrier includes being formed for each discrete engagement pad Multiple features of independent barrier, the multiple feature are solid in conductive adhesive grafting material during the manufacture of superbattery Conductibility grafting material is substantially confined to discrete engagement pad before changing.
68A.According to the superbattery described in clause 67A, wherein the independent barrier abuts corresponding discrete engagement pad simultaneously And it is higher than the corresponding discrete engagement pad.
69A.A method of solar cell string is made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and formed more A rectangle silicon solar cell, wherein each silicon solar cell is substantially equal along the length of its long axis；And
Rectangle silicon solar cell is in line arrangement, the long side of adjacent solar battery is made to be overlapped and conductively be joined to Each other, to which solar cell to be electrically connected in series；
Wherein the multiple rectangle silicon solar cell includes：There are two at least one rectangle solar cell of chamfering, institutes for tool Chamfering is stated corresponding to the turning of pseudo-square wafers or the part at turning；And respectively lack one or more squares of chamfering Shape silicon solar cell.And
Square wherein by making the width vertical with including the long axis of rectangle silicon solar cell of chamfering be more than and lack chamfering The vertical width of the long axis of shape silicon solar cell, and the spacing between the parallel lines along cutting pseudo-square wafers into Row selection, to compensate chamfering；Therefore, during solar cell string works, multiple rectangular silicons in solar cell string are too The front surface of each battery in positive energy battery, the area being exposed under sunlight are substantially equal.
70A.A kind of solar cell string, including：
The multiple silicon solar cells for the arrangement that is in line, the wherein end of adjacent solar battery are overlapped and conductively engage To each other, to which solar cell is electrically connected in series；
Wherein at least one silicon solar cell has chamfering, and the chamfering, which corresponds to from it, cuts the standard of silicon solar cell The turning of square silicon wafer or the part at turning；At least one silicon solar cell lacks chamfering；In solar cell string During work, the area that the front surface of each silicon solar cell is exposed under sunlight is substantially equal.
71A.A method of two or more solar cell strings are made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and form tool There is a rectangle silicon solar cell more than the first of chamfering, and lacks more than second a rectangle silicon solar cells of chamfering, wherein The chamfering corresponds to the turning of dead square silicon wafer or the part at turning, a rectangular silicon solar-electricity more than described second There is each battery in pond the first length, the span of first length to be equal to the full duration of dead square silicon wafer；
From each battary removal chamfering in a rectangle silicon solar cell more than first, and the third that formation lacks chamfering is more A rectangle silicon solar cell, each battery in the multiple rectangle silicon solar cells of third have than the first length The second short length；
More than second a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than second a rectangle silicon solar cells is electrically connected in series, width is consequently formed and is equal to the The solar cell string of one length；And
The multiple rectangle silicon solar cells of third are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and the multiple rectangle silicon solar cells of third is electrically connected in series, width is consequently formed and is equal to the The solar cell string of two length.
72A.A method of two or more solar cell strings are made, the method includes：
Along a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to each chip, and form tool There is a rectangle silicon solar cell more than the first of chamfering, and lacks more than second a rectangle silicon solar cells of chamfering, wherein The chamfering corresponds to the turning of dead square silicon wafer or the part at turning；
More than first a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than first a rectangle silicon solar cells is electrically connected in series；And
More than second a rectangle silicon solar cells are in line arrangement, make the long side of adjacent rectangle silicon solar cell be overlapped and It is conductively joined to each other, and more than second a rectangle silicon solar cells is electrically connected in series.
73A.A method of solar energy module is made, the method includes：
Along each in a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to chip, with Just multiple rectangle silicon solar cells with chamfering are formed by the multiple dead square silicon wafer, and lacks chamfering Multiple rectangle silicon solar cells, wherein the chamfering corresponds to the turning of dead square silicon wafer；
Arrangement lacks at least some of rectangle silicon solar cell of chamfering, forms more than first a superbatteries, each super Battery only includes the rectangle silicon solar cell for lacking chamfering for the arrangement that is in line, wherein the rectangular silicon solar cell Long side is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series；
It arranges at least some of the rectangle silicon solar cell with chamfering, forms more than second a superbatteries, it is each super Battery only includes the straight rectangle silicon solar cell with chamfering of arrangement, wherein the rectangular silicon solar cell Long side is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series；And
Superbattery is arranged to the parallel superbattery row for being substantially equal length, before forming solar energy module Surface, wherein each row only include more than first a superbatteries in superbattery or only include more than second a superbatteries In superbattery.
74A.According to the solar energy module described in clause 73A, wherein adjacent to solar energy module parallel opposing edges it is super It is two rows of only including the superbattery in more than second a superbatteries in grade battery row, and every other superbattery row is only Including the superbattery in more than first a superbatteries.
75A.According to the solar energy module described in clause 74A, wherein solar energy module includes six row's superbattery in total.
76A.A kind of superbattery, including：
The multiple silicon solar cells for the arrangement that is in line in a first direction, wherein the end overlapping of adjacent silicon solar cell And be conductively joined to each other, to which silicon solar cell is electrically connected in series；And
Elongated flexible electrical interconnection, long axis is parallel to the second direction vertical with the first direction and is orientated, described elongated Flexible electrical interconnection have following features：
At three or more discrete positions arranged along second direction, it is conductively joined to the silicon sun of end one The front surface or back surface of energy battery；At least full duration of extending end solar cell in a second direction；Perpendicular to end The front surface or rear surface of silicon solar cell measure, and conductor thickness is less than or equal to about 100 microns；To flowing in a second direction Dynamic electric current provides the resistance less than or equal to about 0.012 ohm；Be configured to provide flexibility, the flexibility at about -40 DEG C extremely Within the temperature range of about 85 DEG C, in a second direction uneven is reconciled between end silicon solar cell and the electrical interconnection Expansion.
77A.According to the superbattery described in clause 76A, wherein perpendicular to end silicon solar cell front surface and after Surface measurement, the conductor thickness of flexible electrical interconnection is less than or equal to about 30 microns.
78A.According to the superbattery described in clause 76A, wherein flexible electrical interconnection extend in a second direction it is super Except battery, electricity is provided to be at least the neighbouring superbattery the second superbattery disposed in parallel in solar energy module Interconnection.
79A.According to the superbattery described in clause 76A, wherein flexible electrical interconnection extend in a first direction it is super Except battery, to provide electricity with the superbattery the second superbattery disposed in parallel that is in line in solar energy module Interconnection.
80A.A kind of solar energy module, including：
Multiple superbatteries, the multiple superbattery be arranged to span equal to module width two or more are parallel Row, to form the front surface of module, each superbattery includes the multiple silicon solar cells of arrangement of being in line, wherein The end of adjacent silicon solar cell is overlapped and is conductively joined to each other, to which silicon solar cell to be electrically connected in series；
At least one end of first superbattery adjacent with the edge of module is electric via flexible electrical interconnection wherein in first row It is connected to one end of the second superbattery adjacent with the same edge of module in second row, the flexibility electrical interconnection has Following features：The front surface of the first superbattery is joined to by electroconductive binder grafting material at multiple discrete positions；It is parallel Extend in the edge of module；Its at least part is folded in around described one end of the first superbattery, thus in front of module It is invisible.
81A.According to the solar energy module described in clause 80A, the wherein table of the flexible electrical interconnection in the front surface of module Face is capped or dyes, with the visual contrast between mitigation and superbattery.
82A.According to the solar energy module described in clause 80A, wherein the two or more parallels of superbattery It is arranged on white backing plate, it will be before the solar energy module that irradiated by solar radiation during being formed in the operation of solar energy module Surface, the white backing plate include parallel dark-coloured striped, and the position of the dead color striped and width correspond to parallel super Grade battery row between gap position and width, and the white portion of the backer board by the gap between the row not It can be seen that.
83A.A method of solar cell string is made, the method includes：
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, to Multiple rectangular areas are defined on silicon solar cell；
In one or more positions of the long side of neighbouring each rectangular area, electroconductive binder grafting material is applied to one Or on the silicon solar cell painted at multiple quarters；
Silicon solar cell is divided along line drawing is carved, obtains the silicon solar cell of multiple rectangles, the silicon solar of each rectangle All position adjacent with long side on its front surface is arranged in some electroconductive binder grafting material on battery；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell to cover Mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Conductive bonding material is set to cure, to which adjacent overlapping rectangles silicon solar cell engagement be arrived each other, and these are electric Pond is electrically connected in series.
84A.A method of solar cell string is made, the method includes：
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, to Multiple rectangular areas are defined on silicon solar cell, each solar cell includes the bottom of top surface and opposite facing setting Surface；
Electroconductive binder grafting material is applied in the multiple portions of the top surface of one or more silicon solar cells；
The applying vacuum between the bottom surface of one or more silicon solar cells and the support surface of bending, so that one Or the support surface of multiple silicon solar cells against bending is bent, and cause one or more silicon solar cells along quarter Line drawing is cut, and then obtains the silicon solar cell of multiple rectangles, some is led on the silicon solar cell of each rectangle Position adjacent with long side on its front surface is arranged in electric adhesive bond material；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell to cover Mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Conductive bonding material is set to cure, to which adjacent overlapping rectangles silicon solar cell engagement be arrived each other, and these are electric Pond is electrically connected in series.
85A.It is applied to one or more silicon according to the method described in clause 84A, including by electroconductive binder grafting material On solar cell, then one or more is marked with laser on each battery in one or more silicon solar cells Carve line drawing.
86A.Include on each battery in one or more silicon solar cells according to the method described in clause 84A With laser mark one or more quarter line drawing, electroconductive binder grafting material is then applied to one or more silicon solars On battery.
1B.A kind of equipment, including：
A string of at least 25 solar cells being connected in series with, the solar cell string is in parallel with shared bypass diode to be connected It connects, it includes the super of the solar cell that each solar cell, which has greater than about 10 volts of breakdown voltage and is assembled to, Grade battery, the solar cell be arranged such that adjacent solar battery long side overlapping and by adhesive conductively Engagement.
2B.According to the equipment described in clause 1B, wherein N is greater than or equal to 30.
3B.According to the equipment described in clause 1B, wherein N is greater than or equal to 50.
4B.According to the equipment described in clause 1B, wherein N is greater than or equal to 100.
5B.According to the equipment described in clause 1B, wherein described adhesive has the thickness less than or equal to about 0.1mm, and And with the thermal conductivity greater than or equal to about 1.5W/m/K.
6B.According to the equipment described in clause 1B, wherein N number of solar cell is assembled to single superbattery.
7B.According to the equipment described in clause 1B, wherein N number of solar cell assemble it is multiple on same backing Superbattery.
8B.According to the equipment described in clause 1B, wherein the solar cell is silicon solar cell.
9B.According to the equipment described in clause 1B, wherein superbattery has at least about length of 500mm in the flow direction Degree.
10B.According to the equipment described in clause 1B, wherein superbattery includes the spy for being configured to limitation adhesive sprawling Sign.
11B.According to the equipment described in clause 10B, wherein the feature includes protruding features.
12B.According to the equipment described in clause 10B, wherein the feature includes metallization.
13B.According to the equipment described in clause 12B, wherein the metallization includes extending the line of the first long side overall length, The equipment further includes at least one engagement pad between the line and the first long side.
14B.According to the equipment described in clause 13B, wherein：
The metallization further includes the finger-shaped material for being electrically connected at least one engagement pad and extending perpendicular to the first long side；And
Conductive threads interconnect finger-shaped material.
15B.According to the equipment described in clause 10B, wherein the Q-character is on the front side of solar cell.
16B.According to the equipment described in clause 10B, wherein the Q-character is on the back side of solar cell.
17B.According to the equipment described in clause 10B, wherein the feature includes recess feature.
18B.According to the equipment described in clause 10B, wherein the feature is hidden by the adjacent solar battery of superbattery It hides.
19B.According to the equipment described in clause 1B, wherein the first solar cell of the superbattery has chamfering, institute The second solar cell for stating superbattery lacks chamfering, and first solar cell and second solar-electricity The area that pond is exposed under sunlight is identical.
20B.Further include flexible electrical interconnection according to the equipment described in clause 1B, the flexibility electrical interconnection has parallel In the long axis of the second direction vertical with the first direction, the flexibility electrical interconnection is conductively joined to solar-electricity The surface in pond and in two dimension reconcile solar cell thermal expansion.
21B.According to the equipment described in clause 20B, wherein the flexible electrical interconnection piece is with micro- less than or equal to about 100 The thickness of rice, to provide the resistance less than or equal to about 0.012 ohm.
22B.According to the equipment described in clause 20B, wherein the surface includes back surface.
23B.According to the equipment described in clause 20B, wherein the flexible electrical interconnection piece contacts another superbattery.
24B.According to the equipment described in clause 23B, wherein another described superbattery and the superbattery Cheng Zhi Line.
25B.According to the equipment described in clause 23B, wherein another described superbattery is adjacent to the superbattery.
26B.According to the equipment described in clause 20B, wherein the first part of the interconnection piece surrounds the edge of superbattery It folds so that remaining second interconnecting parts are located on the back side of superbattery.
27B.According to the equipment described in clause 20B, wherein the flexible electrical interconnection piece is electrically connected to bypass diode.
28B.According to the equipment described in clause 1B, plurality of superbattery is arranged to two or more onto the backing plate A parallel row forms solar energy module front surface, wherein the backer board is white and includes dark-coloured striped, it is described The position of dark-coloured striped and width correspond to the gap between superbattery.
29B.According to the equipment described in clause 1B, wherein superbattery includes be connected to power management system at least one To battery strings.
30B.Further include electric power controller according to the equipment described in clause 1B, the electric power controller and super electricity Pond is electrically connected and is configured to：
Receive the voltage output of superbattery；
Based on the voltage, determine solar cell whether in reverse-biased；And
Reverse-biased solar cell and superbattery modular circuit are disconnected.
31B.According to the equipment described in clause 1B, wherein superbattery setting is padded first to form the first module, First module has the top conduction band on the first side towards solar energy direction, and the equipment further includes：
Be arranged it is upper to form another superbattery of the second module in the second liner, the disparate modules with away from Bottom belt in the second side in the direction in solar energy direction,
Wherein the second module is Chong Die with a part for the first module including top tape and is joined to the part.
32B.According to the equipment described in clause 31B, wherein the second module passes through adhesive bond to the first module.
33B.According to the equipment described in clause 31B, wherein the second module is joined to the first module by matching arrangement.
34B.Further include the terminal box Chong Die with the second module according to the equipment described in clause 31B.
35B.According to the equipment described in clause 34B, wherein the second module is joined to the first module by matching arrangement.
36B.According to the equipment described in clause 35B, wherein the pairing cloth is setting in the terminal box and the second module Another terminal box between.
37B.According to the equipment described in clause 31B, wherein the first liner includes glass.
38B.According to the equipment described in clause 31B, wherein the first liner includes non-glass.
39B.According to the equipment described in clause 1B, wherein the solar cell includes the chamfering cut from more bulk Part.
40B.According to the equipment described in clause 39B, wherein superbattery further includes another sun for having chamfered part It can battery, the wherein long side of solar cell and the electrical contact of the long side of another solar cell with similar length.
1C1.A kind of method, including：
Formation includes the superbattery of a string of at least N >=25 solar cells being connected in series with, Mei Getai on identical liner It is positive can battery there is greater than about 10 volts of breakdown voltage, and be arranged so that adjacent solar battery long side overlapping and with Adhesive conductively engages；And
Each superbattery is connect at most single bypass diode.
2C1.According to the method described in clause 1C1, wherein N is greater than or equal to 30.
3C1.According to the method described in clause 1C1, wherein N is greater than or equal to 50.
4C1.According to the method described in clause 1C1, wherein N is greater than or equal to 100.
5C1.According to the method described in clause 1C1, wherein described adhesive has the thickness less than or equal to about 0.1mm, And with the thermal conductivity greater than or equal to about 1.5w/m/k.
6C1.According to the method described in clause 1C1, wherein the solar cell is silicon solar cell.
7C1.According to the method described in clause 1C1, wherein the superbattery has at least about in the flow direction The length of 500mm.
8C1.According to the method described in clause 1C1, wherein the first solar cell of the superbattery has chamfering, Second solar cell of the superbattery lacks chamfering, and first solar cell and second solar energy The area that battery is exposed under sunlight is identical.
9C1.Further include limiting adhesive using the feature of solar cell surface according to the method described in clause 1C1 Sprawling.
10C1.According to the method described in clause 9C1, wherein the feature includes protruding features.
11C1.According to the method described in clause 9C1, wherein the feature includes metallization.
12C1.According to the method described in clause 11C1, wherein the metallization includes extending the first long side overall length Line, at least one engagement pad between the line and the first long side.
13C1.According to the method described in clause 12C1, wherein：
The metallization further includes the finger-shaped material for being electrically connected at least one engagement pad and extending perpendicular to the first long side；And
Conductive threads interconnect finger-shaped material.
14C1.According to the method described in clause 9C1, wherein the Q-character is on the front side of solar cell.
15C1.According to the method described in clause 9C1, wherein the Q-character is on the back side of solar cell.
16C1.According to the method described in clause 9C1, wherein the feature includes recess feature.
17C1.According to the method described in clause 9C1, wherein the feature is hidden by the adjacent solar battery of superbattery It hides.
18C1.Further include that another superbattery is formed on identical liner according to the method described in clause 1C1.
19C1.According to the method described in clause 1C1, further include：
It is conductively joined to the surface of solar cell, flexible electrical interconnection has the long axis for being parallel to second direction, described Second direction is perpendicular to first direction；And
So that flexible electrical interconnection reconciles the thermal expansion of solar cell in two dimension.
20C1.According to the method described in clause 19C1, wherein the flexible electrical interconnection piece has less than or equal to about 100 The thickness of micron, to provide the resistance less than or equal to about 0.012 ohm.
21C1.According to the method described in clause 19C1, wherein the surface includes back surface.
22C1.Further include that another superbattery is made to be connect with flexible electrical interconnection according to the method described in clause 19C1 It touches.
23C1.According to the method described in clause 22C1, wherein another described superbattery and the superbattery Cheng Zhi Line.
24C1.According to the method described in clause 22C1, wherein another described superbattery is adjacent to the superbattery.
25C1.Further include that the first part of the interconnection piece is made to surround superbattery according to the method described in clause 19C1 Edge fold so that remaining second interconnecting parts are located on the back side of superbattery.
26C1.Further include that the flexible electrical interconnection is electrically connected to two poles of bypass according to the method described in clause 19C1 Pipe.
27C1.According to the method described in clause 1C1, further include：
Multiple superbatteries are arranged to two or more parallels on identical liner, to form solar energy module front surface, The wherein described backer board is white and includes corresponding to the position in gap and the dark-coloured striped of width between superbattery.
28C1.Further include that at least a pair of of battery is series-connected to power management system according to the method described in clause 1C1.
29C1.According to the method described in clause 1C1, further include：
Electric power controller is electrically connected with superbattery；
So that electric power controller receives the voltage output of superbattery；
Based on the voltage so that whether electric power controller determines solar cell in reverse-biased；And
So that electric power controller disconnects reverse-biased solar cell from superbattery modular circuit.
30C1.According to the method described in clause 1C1, wherein the superbattery is arranged on liner to form the first mould Block, first module further include with the top conduction band on the first side towards solar energy direction, the method：
The setting of another superbattery is formed into the second module on another liner, second module has towards remote Bottom belt in the second side in the direction from solar energy direction,
Wherein the second module is Chong Die with a part for the first module including top tape and is joined to the part.
31C1.According to the method described in clause 30C1, wherein the second module passes through adhesive bond to the first module.
32C1.According to the method described in clause 30C1, wherein the second module is joined to the first module by matching arrangement.
33C1.Further include keeping terminal box Chong Die with the second module according to the method described in clause 30C1.
34C1.According to the method described in clause 33C1, wherein the second module is joined to the first module by matching arrangement.
35C1.According to the method described in clause 34C1, wherein the pairing cloth is setting in the terminal box and the second module On another terminal box between.
36C1.According to the method described in clause 30C1, wherein the liner includes glass.
37C1.According to the method described in clause 30C1, wherein the liner includes non-glass.
38C1.According to the method described in clause 30C1, further include：
Relay switch is electrically connected in series between the first module and the second module；
The output voltage of the first module is sensed by controller；And
When the output voltage is less than the limit, switched with controller starting relay.
39C1.According to the method described in clause 1C1, wherein the solar cell includes falling of being cut from more bulk Angle part.
40C1.According to the method described in clause 39C1, wherein it includes putting the long side of solar cell to form superbattery It is set to and is in electrical contact with the long side of the similar length of another solar cell with chamfered part.
1C2.A kind of equipment, including：
Solar energy module, the solar energy module include front surface, and the front surface includes assemble the first superbattery A string of at least 19 solar cells being connected in series with, first superbattery are arranged so that adjacent solar battery Long side is overlapped and is conductively engaged with adhesive；And
Ribbon conductor, the ribbon conductor are electrically connected to the rear surface contact of the first superbattery, the tap hidden are carried It is supplied to electrical components.
2C2.According to the equipment described in clause 1C2, wherein the electrical components include bypass diode.
3C2.According to the equipment described in clause 2C2, wherein the bypass diode is located at the rear surface of solar energy module On.
4C2.According to the equipment described in clause 3C2, wherein the bypass diode is located at the outside of terminal box.
5C2.According to the equipment described in clause 4C2, wherein the terminal box includes single terminal.
6C2.According to the equipment described in clause 3C2, wherein the edge that the bypass diode is located in solar energy module is attached Closely.
7C2.According to the equipment described in clause 2C2, wherein bypass diode is located in laminate structures.
8C2.According to the equipment described in clause 7C2, wherein the first superbattery is encapsulated in laminate structures.
9C2.According to the equipment described in clause 2C2, wherein the bypass diode is located in the periphery week of solar energy module It encloses.
10C2.According to the equipment described in clause 1C2, wherein the electrical components include module terminals, terminal box, power tube Reason system, intelligent switch, relay, voltage sensing controller, central inverter, the micro- inverters of DC/AC or DC/DC modules Power optimization device.
11C2.According to the equipment described in clause 1C1, wherein the electrical components are located in the rear surface of solar energy module.
12C2.According to the equipment described in clause 1C1, wherein the solar energy module further includes assembling the second super electricity At least 19 solar cells that the second of pond is connected in series with, second superbattery, which has, to be electrically connected in series to first The first end of superbattery.
13C2.It is used in combination according to the equipment described in clause 12C2 wherein the second superbattery is Chong Die with the first superbattery Conductive adhesive is electrically connected in series to the first superbattery.
14C2.According to the equipment described in clause 12C2, wherein the rear surface contact is located remotely from first end.
15C2.Further include the flexible interconnection between first end and the first superbattery according to the equipment described in clause 12C2 Part.
16C2.According to the equipment described in clause 15C2, wherein the flexible interconnection extend beyond the first superbattery and The lateral edges of second superbattery are electrically connected the first superbattery and the second superbattery are in parallel with another superbattery It connects.
17C2.According to the equipment described in clause 1C2, wherein described adhesive has the thickness less than or equal to about 0.1mm Degree, and with the thermal conductivity greater than or equal to about 1.5w/m/k.
18C2.According to the equipment described in clause 1C2, wherein the solar cell is with the greater than about breakdown potential of 10V The silicon solar cell of pressure.
19C2.According to the equipment described in clause 1C2, wherein the first superbattery has at least about in the flow direction The length of 500mm.
20C2.According to the equipment described in clause 1C2, wherein the solar cell in the first superbattery includes being configured At the feature of limitation adhesive sprawling.
21C2.According to the equipment described in clause 20C2, wherein the feature includes protruding features.
22C2.According to the equipment described in clause 21C2, wherein the feature includes metallization.
23C2.According to the equipment described in clause 22C2, wherein the metallization includes extending the biography of the first long side overall length The property led line, the equipment further include at least one engagement pad between the line and the first long side.
24C2.According to the equipment described in clause 23C2, wherein：
The metallization further includes the finger-shaped material for being electrically connected at least one engagement pad and extending perpendicular to the first long side；And
Conductive threads interconnect finger-shaped material.
25C2.According to the equipment described in clause 20C2, wherein the Q-character is on the front side of solar cell.
26C2.According to the equipment described in clause 20C2, wherein the Q-character is on the back side of solar cell.
27C2.According to the equipment described in clause 20C2, wherein the feature includes recess feature.
28C2.According to the equipment described in clause 20C2, wherein the feature is by the adjacent solar-electricity of the first superbattery Pond hides.
29C2.According to the equipment described in clause 1C2, wherein the solar cell of the first superbattery includes chamfered part.
30C2.According to the equipment described in clause 29C2, wherein the first superbattery further includes have chamfered part another A solar cell, and wherein the long side of solar cell and with similar length another solar cell long side Electrical contact.
31C2.According to the equipment described in clause 29C2, wherein the first superbattery further include lack chamfering another too It is positive can battery, and the area that the solar cell and another described solar cell are exposed under sunlight is identical.
32C2.According to the equipment described in clause 1C2, wherein：
First superbattery and the second superbattery are arranged to parallel in backer board front surface；And
The backer board be white and include correspond between the first superbattery and the second superbattery the position in gap and The dark-coloured striped of width.
33C2.According to the equipment described in clause 1C2, wherein the first superbattery includes being connected to power management system At least a pair of of battery strings.
34C2.Further include electric power controller according to the equipment described in clause 1C2, the electric power controller and first Superbattery is electrically connected and is configured to：
Receive the voltage output of the first superbattery；
Based on the voltage, determine the solar cell of the first superbattery whether in reverse-biased；And
Reverse-biased solar cell and superbattery modular circuit are disconnected.
35C2.According to the equipment described in clause 34C2, wherein the electric power controller includes relay.
36C2.According to the equipment described in clause 1C2, wherein the setting of the first superbattery is padded first to form mould Block, the module further include with the top conduction band on the first side towards solar energy direction, the equipment：
Be arranged it is upper to form another superbattery of disparate modules in the second liner, the disparate modules with away from Bottom belt in the second side in the direction in solar energy direction,
The wherein described disparate modules are Chong Die with a part for the module including top tape and are joined to the part.
37C2.According to the equipment described in clause 36C2, wherein the disparate modules pass through adhesive bond to the mould Block.
38C2.According to the equipment described in clause 36C2, wherein the disparate modules are joined to the mould by matching arrangement Block.
39C2.Further include the terminal box Chong Die with the disparate modules according to the equipment described in clause 36C2.
40C2.According to the equipment described in clause 39C2, wherein the disparate modules pass through the terminal box and the different sun Pairing arrangement between another terminal box in energy module is joined to the module.
1C3.A kind of equipment, including：
First superbattery, first superbattery are arranged in solar energy module front surface and include multiple solar-electricities Pond, each solar cell have the breakdown voltage of greater than about 10V；
First ribbon conductor, first ribbon conductor is electrically connected with the rear surface contact of the first superbattery, hidden by first The tap of Tibetan is provided to electrical components；
Second superbattery, second superbattery are arranged in solar energy module front surface and include multiple solar energy Battery, each solar cell have the breakdown voltage of greater than about 10V；And
Second ribbon conductor, second ribbon conductor are electrically connected with the rear surface contact of the second superbattery, to provide second Hiding tap.
2C3.According to the equipment described in clause 1C3, wherein the electrical components include bypass diode.
3C3.According to the equipment described in clause 2C3, wherein the bypass diode is located in solar energy module rear surface.
4C3.According to the equipment described in clause 3C3, wherein the bypass diode is located at the outside of terminal box.
5C3.According to the equipment described in clause 4C3, wherein the terminal box includes single terminal.
6C3.According to the equipment described in clause 3C3, wherein to be located in solar energy module edge attached for the bypass diode Closely.
7C3.According to the equipment described in clause 2C3, wherein the bypass diode is located in laminate structures.
8C3.According to the equipment described in clause 7C3, wherein the first superbattery is encapsulated in laminate structures.
9C3.According to the equipment described in clause 8C3, wherein the bypass diode is located in solar energy module periphery week It encloses.
10C3.According to the equipment described in clause 1C3, wherein the first superbattery is connected in series with the second superbattery.
11C3.According to the equipment described in clause 10C3, wherein：
First superbattery and the second superbattery form first pair；And
The equipment further includes two additional superbatteries of the second centering being connected in parallel with first Dui.
12C3.According to the equipment described in clause 10C3, wherein the second hiding tap is connected to electrical components.
13C3.According to the equipment described in clause 12C3, wherein the electrical components include bypass diode.
14C3.According to the equipment described in clause 13C3, wherein the first superbattery includes no less than 19 solar-electricities Pond.
15C3.According to the equipment described in clause 12C3, wherein the electrical components include power management system.
16C3.According to the equipment described in clause 1C3, wherein the electrical components include switch.
17C3.According to the equipment described in clause 16C3, further include and the voltage sensing controller for switching and being connected to.
18C3.According to the equipment described in clause 16C3, wherein the switch is connected to central inverter.
19C3.According to the equipment described in clause 1C3, wherein the electrical components include electric power controller, the power supply pipe Reason device is configured to：
Receive the voltage output of the first superbattery；
Based on the voltage, determine the solar cell of the first superbattery whether in reverse-biased；And
Reverse-biased solar cell and superbattery modular circuit are disconnected.
20C3.According to the equipment described in clause 1, wherein the electrical components include inverter.
21C3.According to the equipment described in clause 20C3, wherein the inverter includes the micro- inverters of DC/AC.
22C3.According to the equipment described in clause 1C3, wherein the electrical components include solar energy module terminal.
23C3.According to the equipment described in clause 22C3, wherein the solar energy module terminal is single sun in terminal box It can module terminals.
24C3.According to the equipment described in clause 1C3, wherein the electrical components are located in solar energy module rear surface.
25C3.According to the equipment described in clause 1C3, wherein the rear surface contact is located remotely from and the second super electricity The end of first superbattery of pond overlapping.
26C3.According to the equipment described in clause 1C3, wherein the first superbattery has at least about in the flow direction The length of 500mm.
27C3.According to the equipment described in clause 1C3, wherein the solar cell in the first superbattery includes being configured At the feature of limitation adhesive sprawling.
28C3.According to the equipment described in clause 27C3, wherein the feature includes protruding features.
29C3.According to the equipment described in clause 28C3, wherein the feature includes metallization.
30C3.According to the equipment described in clause 27C3, wherein the feature includes recess feature.
31C3.According to the equipment described in clause 27C3, wherein the Q-character is on the back side of solar cell.
32C3.According to the equipment described in clause 27C3, wherein the feature is by the adjacent solar-electricity of the first superbattery Pond hides.
33C3.According to the equipment described in clause 1C3, wherein the solar cell of the first superbattery includes chamfered part.
34C3.According to the equipment described in clause 33C3, wherein the first superbattery further includes have chamfered part another A solar cell, and wherein the long side of solar cell and with similar length another solar cell long side Electrical contact.
35C3.According to the equipment described in clause 33C3, wherein the first superbattery further include lack chamfering another too It is positive can battery, and the area that the solar cell and another described solar cell are exposed under sunlight is identical.
36C3.According to the equipment described in clause 1C3, wherein：
First superbattery and the second superbattery are arranged to parallel in backer board front surface；And
The backer board be white and include correspond between the first superbattery and the second superbattery the position in gap and The dark-coloured striped of width.
37C3.According to the equipment described in clause 1C3, wherein the setting of the first superbattery is padded first to form mould Block, the module further include with the top conduction band in the module front surface towards solar energy direction, the equipment：
It is arranged to form the third superbattery of disparate modules on the second liner, the disparate modules have away from too Bottom belt in the second side in the direction in positive energy direction,
The wherein described disparate modules are Chong Die with a part for the module including top tape and are joined to the part.
38C3.According to the equipment described in clause 37C3, wherein the disparate modules pass through adhesive bond to the mould Block.
39C3.Further include the terminal box Chong Die with the disparate modules according to the equipment described in clause 37C3.
40C3.According to the equipment described in clause 39C3, wherein the disparate modules pass through the terminal box and the difference Pairing arrangement between another terminal box in module is joined to the module.
1C4.A kind of equipment, including：
Solar energy module, the solar energy module include front surface, and the front surface includes assemble the first superbattery A string of solar cells being connected in series with, first superbattery are arranged so that the side overlapping of adjacent solar battery simultaneously It is conductively engaged with adhesive；And
It is configured to the solar cell surface feature of limitation adhesive.
2C4.According to the equipment described in clause 1C4, wherein the solar cell surface feature includes recess feature.
3C4.According to the equipment described in clause 1C4, wherein the solar cell surface feature includes protruding features.
4C4.According to the equipment described in clause 3C4, wherein the protruding features are located in the front surface of solar cell.
5C4.According to the equipment described in clause 4C4, wherein the protruding features include metallization pattern.
6C4.According to the equipment described in clause 5C4, wherein the metallization pattern includes being parallel to and substantially along solar energy The conductive threads that the long side of battery extends.
7C4.Further include the engagement pad between conductive threads and long side according to the equipment described in clause 6C4.
8C4.According to the equipment described in clause 7C4, wherein：
The metallization pattern further includes multiple finger-shaped materials；And
Finger-shaped material is electrically interconnected the conductive threads, to provide multiple conducting paths from each finger-shaped material to engagement pad.
9C4.According to the equipment described in clause 7C4, further includes neighbouring and be parallel to long side and arrange in a row multiple points Vertical engagement pad, the metallization pattern form multiple independent barriers, adhesive are limited to discrete engagement pad.
10C4.According to the equipment described in clause 8C4, wherein the multiple independent barrier abuts corresponding discrete engagement pad.
11C4.According to the equipment described in clause 8C4, wherein the multiple independent barrier is higher than corresponding discrete engagement pad.
12C4.According to the equipment described in clause 1C4, wherein the solar cell surface feature is by another solar energy The overlapping side of battery hides.
13C4.According to the equipment described in clause 12C4, other in which solar cell is the portion of the superbattery Point.
14C4.According to the equipment described in clause 12C4, other in which solar cell is the portion of another superbattery Point.
15C4.According to the equipment described in clause 3C4, wherein the protruding features are located on the back surface of solar cell.
16C4.According to the equipment described in clause 15C4, wherein the protruding features include metallization pattern.
17C4.According to the equipment described in clause 16C4, wherein the metallization pattern forms multiple independent barriers, it will Adhesive is limited to multiple discrete engagement pads, and the discrete engagement pad is located at another solar-electricity Chong Die with solar cell In the front surface in pond.
18C4.According to the equipment described in clause 17C4, wherein the multiple independent barrier abuts corresponding discrete contact Pad.
19C4.According to the equipment described in clause 17C4, wherein the multiple independent barrier is higher than corresponding discrete contact Pad.
20C4.According to the equipment described in clause 1C1, wherein each solar cell of superbattery has 10V or bigger Breakdown voltage.
21C4.According to the equipment described in clause 1C1, wherein superbattery has at least about 500mm's in the flow direction Length.
22C4.According to the equipment described in clause 1C1, the solar cell of wherein superbattery includes chamfered part.
23C4.According to the equipment described in clause 22C4, wherein superbattery further include have chamfered part another too Positive energy battery, and wherein the long side of solar cell connects with the long side electricity of another solar cell with similar length It touches.
24C4.According to the equipment described in clause 22C4, wherein superbattery further includes another solar energy for lacking chamfering Battery, and the area that the solar cell and another described solar cell are exposed under sunlight is identical.
25C4.According to the equipment described in clause 1C4, wherein the superbattery and the second superbattery are arranged in first In backer board front surface, to form the first module.
26C4.According to the equipment described in clause 25C4, wherein the backer board is white and includes corresponding to described The dark-coloured striped of the position in gap and width between superbattery and the second superbattery.
27C4.According to the equipment described in clause 25C4, wherein first module has first towards solar energy direction Top conduction band in module front surface, the equipment further include：
It is arranged to form the third superbattery of the second module on the second liner, second module has away from too Bottom belt in second module side of positive energy, and
Wherein the second module is Chong Die with a part for the first module including top tape and is joined to the part.
28C4.According to the equipment described in clause 27C4, wherein the second module passes through adhesive bond to the first module.
29C4.Further include the terminal box Chong Die with the second module according to the equipment described in clause 27C4.
30C4.According to the equipment described in clause 29C4, wherein second module is by being arranged in the terminal box and institute It states the arrangement of the pairing between another terminal box in the second module and is joined to the first module.
31C4.According to the equipment described in clause 29C4, wherein the terminal box accommodates individual module terminal.
32C4.Further include the switch between the first module and the second module according to the equipment described in clause 27C4.
33C4.According to the equipment described in clause 32C4, further include and the voltage sensing controller for switching and being connected to.
34C4.According to the equipment described in clause 27C4, wherein superbattery includes individually in parallel with single bypass diode No less than 19 solar cells of electrical connection.
35C4.According to the equipment described in clause 34C4, wherein the single bypass diode is located in the first module edge Near.
36C4.According to the equipment described in clause 34C4, wherein the single bypass diode is located in laminate structures.
37C4.According to the equipment described in clause 36C4, wherein superbattery is encapsulated in laminate structures.
38C4.According to the equipment described in clause 34C4, wherein the single bypass diode is located in the first module periphery Around.
39C4.According to the equipment described in clause 25C4, wherein the superbattery and second superbattery include single Solely it is connected to a pair of electric power controller.
40C4.Further include electric power controller according to the equipment described in clause 25C4, the electric power controller by with It is set to：
Receive the voltage output of superbattery；
Based on the voltage, determine the solar cell of superbattery whether in reverse-biased；And
Reverse-biased solar cell and superbattery modular circuit are disconnected.
1C5.A kind of equipment, including：
Solar energy module, the solar energy module include front surface, and the front surface includes assemble the first superbattery A string of silicon solar cells being connected in series with, first superbattery include the first silicon solar cell, and first silicon is too Positive energy battery has chamfering and is arranged so that side is Chong Die with the second silicon solar cell, and adhesive and the second silicon is used in combination too Positive energy battery conductively engages.
2C5.According to the equipment described in clause 1C5, wherein the second silicon solar cell lacks chamfering, the first superbattery The front surface area that is exposed under sunlight of each silicon solar cell be substantially equal.
3C5.According to the equipment described in clause 2C5, wherein：
First silicon solar cell and the second silicon solar cell have equal length；And
The width of first silicon solar cell is more than the width of the second silicon solar cell.
4C5.According to the equipment described in clause 3C5, wherein the length reappears the shape of pseudo-square wafers.
5C5.According to the equipment described in clause 3C5, wherein the length is 156mm.
6C5.According to the equipment described in clause 3C5, wherein the length is 125mm.
7C5.According to the equipment described in clause 3C5, wherein the length-width ratio between the width and length of the first solar cell Between about 1:2 to about 1:Between 20.
8C5.According to the equipment described in clause 3C5, wherein the first silicon solar cell is Chong Die with the second silicon solar cell About 1mm to about 5mm.
9C5.According to the equipment described in clause 3C5, wherein the first superbattery includes at least 19 silicon solar electricity Pond, each silicon solar cell have greater than about 10 volts of breakdown voltage.
10C5.According to the equipment described in clause 3C5, wherein the first superbattery has at least about in the flow direction The length of 500mm.
11C5.According to the equipment described in clause 3C5, wherein：
First superbattery is connected in parallel on the front surface with the second superbattery；And
The front surface includes white liner, and the white liner is characterized in that corresponding to the first superbattery and the second surpassing The position in gap and the dark-coloured striped of width between grade battery.
12C5.According to the equipment described in clause 1C5, wherein the second silicon solar cell includes chamfering.
13C5.According to the equipment described in clause 12C5, wherein the long side of the first silicon solar cell and the second silicon solar The long side of battery is overlapped.
14C5.According to the equipment described in clause 12C5, wherein the long side of the first silicon solar cell and the second silicon solar The short side of battery is overlapped.
15C5.According to the equipment described in clause 1C5, wherein the front surface includes：
First row, the first row include the first superbattery being made of the solar cell with chamfering；And
Second row, the second row include the second silicon solar cell being connected in series with for assembling the second superbattery, institute State that the second superbattery is connected in parallel with the first superbattery and the solar cell by lacking chamfering forms, the length of second row It spends and is substantially equal with the length of first row.
16C5.According to the equipment described in clause 15C5, wherein first row proximity modules edge, and second row is not adjacent to Module edge.
17C5.According to the equipment described in clause 15C5, wherein the first superbattery includes with greater than about 10 volts of breakdown At least 19 solar cells of voltage, and the first superbattery has at least about length of 500mm in the flow direction Degree.
18C5.According to the equipment described in clause 15C5, wherein the front surface includes white liner, the white liner It is characterized in that corresponding to the dark-coloured striped of the position in gap and width between the first superbattery and the second superbattery.
19C5.Further include the metallization pattern on the second solar cell front side according to the equipment described in clause 1C5.
20C5.According to the equipment described in clause 19C5, wherein the metallization pattern includes the taper extended around chamfering Part.
21C5.According to the equipment described in clause 19C5, wherein the metallization pattern includes protruding features, it is viscous to limit The sprawling of mixture.
22C5.According to the equipment described in clause 19C5, wherein the metallization pattern includes：
Multiple discrete engagement pads；
It is electrically connected to the finger-shaped material of multiple discrete engagement pads；And
The conductive threads that finger-shaped material is interconnected.
23C5.According to the equipment described in clause 22C5, wherein the metallization pattern forms multiple independent barriers, it will Adhesive is limited to discrete engagement pad.
24C5.According to the equipment described in clause 23C5, wherein the multiple independent barrier abuts corresponding discrete engagement pad And it is higher than the corresponding discrete engagement pad.
25C5.Further include flexible electrical interconnection according to the equipment described in clause 1C5, the flexibility electrical interconnection conductibility Ground is joined to the surface of the first solar cell and reconciles the thermal expansion of the first solar cell in two dimension.
26C5.According to the equipment described in clause 25C5, wherein the first part of the interconnection piece surrounds the first superbattery Edge fold so that remaining second interconnecting parts are located on the back side of the first superbattery.
27C5.According to the equipment described in clause 1C5, wherein the module has in the front surface towards solar energy direction Top conduction band, the equipment further includes：
Another module, another described module have setting the second superbattery on the front surface, away from it is described too Bottom belt in another module of positive energy, and
Wherein the second module is Chong Die with a part for the first module including top tape and is joined to the part.
28C5.According to the equipment described in clause 27C5, wherein another described module passes through adhesive bond to the mould Block.
29C5.Further include the terminal box Chong Die with another module according to the equipment described in clause 27C5.
30C5.According to the equipment described in clause 29C5, wherein another described module passes through the terminal box and another Pairing arrangement between another terminal box in module is joined to the module.
31C5.According to the equipment described in clause 29C5, wherein the terminal box accommodates individual module terminal.
32C5.Further include opening between the module and another described module according to the equipment described in clause 27C5 It closes.
33C5.According to the equipment described in clause 32C5, further include and the voltage sensing controller for switching and being connected to.
34C5.According to the equipment described in clause 27C5, wherein the first superbattery includes being electrically connected with single bypass diode No less than 19 solar cells connect.
35C5.According to the equipment described in clause 34C5, wherein the single bypass diode is located in the first module edge Near.
36C5.According to the equipment described in clause 34C5, wherein the single bypass diode is located in laminate structures.
37C5.According to the equipment described in clause 36C5, wherein superbattery is encapsulated in laminate structures.
38C5.According to the equipment described in clause 34C5, wherein the single bypass diode is located in the first module periphery Around.
39C5.According to the equipment described in clause 27C5, wherein the first superbattery and the second superbattery include being connected to A pair of electric power controller.
40C5.Further include electric power controller according to the equipment described in clause 27C5, the electric power controller by with It is set to：
Receive the voltage output of the first superbattery；
Based on the voltage, determine the solar cell of the first superbattery whether in reverse-biased；And
Reverse-biased solar cell and superbattery modular circuit are disconnected.
1C6.A kind of equipment, including：
Solar energy module, the solar energy module include front surface, and the front surface includes assemble the first superbattery A string of silicon solar cells being connected in series with, first superbattery include the first silicon solar cell, and first silicon is too Positive energy battery has chamfering and is arranged so that side is Chong Die with the second silicon solar cell, and adhesive and the second silicon is used in combination too Positive energy battery conductively engages.
2C6.According to the equipment described in clause 1C6, wherein the second silicon solar cell lacks chamfering, the first superbattery The front surface area that is exposed under sunlight of each silicon solar cell be substantially equal.
3C6.According to the equipment described in clause 2C6, wherein：
First silicon solar cell and the second silicon solar cell have equal length；And
The width of first silicon solar cell is more than the width of the second silicon solar cell.
4C6.According to the equipment described in clause 3C6, wherein the length reappears the shape of pseudo-square wafers.
5C6.According to the equipment described in clause 3C6, wherein the length is 156mm.
6C6.According to the equipment described in clause 3C6, wherein the length is 125mm.
7C6.According to the equipment described in clause 3C6, wherein the length-width ratio between the width and length of the first solar cell Between about 1:2 to about 1:Between 20.
8C6.According to the equipment described in clause 3C6, wherein the first silicon solar cell is Chong Die with the second silicon solar cell About 1mm to about 5mm.
9C6.According to the equipment described in clause 3C6, wherein the first superbattery includes at least 19 silicon solar electricity Pond, each silicon solar cell have greater than about 10 volts of breakdown voltage.
10C6.According to the equipment described in clause 3C6, wherein the first superbattery has at least about in the flow direction The length of 500mm.
11C6.According to the equipment described in clause 3C6, wherein：
First superbattery is connected in parallel on the front surface with the second superbattery；And
The front surface includes white liner, and the white liner is characterized in that corresponding to the first superbattery and the second surpassing The position in gap and the dark-coloured striped of width between grade battery.
12C6.According to the equipment described in clause 1C6, wherein the second silicon solar cell includes chamfering.
13C6.According to the equipment described in clause 12C6, wherein the long side of the first silicon solar cell and the second silicon solar The long side of battery is overlapped.
14C6.According to the equipment described in clause 12C6, wherein the long side of the first silicon solar cell and the second silicon solar The short side of battery is overlapped.
15C6.According to the equipment described in clause 1C6, wherein the front surface includes：
First row, the first row include the first superbattery being made of the solar cell with chamfering；And
Second row, the second row include the second silicon solar cell being connected in series with for assembling the second superbattery, institute State that the second superbattery is connected in parallel with the first superbattery and the solar cell by lacking chamfering forms, the length of second row It spends and is substantially equal with the length of first row.
16C6.According to the equipment described in clause 15C6, wherein first row proximity modules edge, and second row is not adjacent to Module edge.
17C6.According to the equipment described in clause 15C6, wherein the first superbattery includes with greater than about 10 volts of breakdown At least 19 solar cells of voltage, and the first superbattery has at least about length of 500mm in the flow direction Degree.
18C6.According to the equipment described in clause 15C6, wherein the front surface includes white liner, the white liner It is characterized in that corresponding to the dark-coloured striped of the position in gap and width between the first superbattery and the second superbattery.
19C6.Further include the metallization pattern on the second solar cell front side according to the equipment described in clause 1C6.
20C6.According to the equipment described in clause 19C6, wherein the metallization pattern includes the taper extended around chamfering Part.
21C6.According to the equipment described in clause 19C6, wherein the metallization pattern includes protruding features, it is viscous to limit The sprawling of mixture.
22C6.According to the equipment described in clause 19C6, wherein the metallization pattern includes：
Multiple discrete engagement pads；
It is electrically connected to the finger-shaped material of multiple discrete engagement pads；And
The conductive threads that finger-shaped material is interconnected.
23C6.According to the equipment described in clause 22C6, wherein the metallization pattern forms multiple independent barriers, it will Adhesive is limited to discrete engagement pad.
24C6.According to the equipment described in clause 23C6, wherein the multiple independent barrier abuts corresponding discrete engagement pad And it is higher than the corresponding discrete engagement pad.
25C6.Further include flexible electrical interconnection according to the equipment described in clause 1C6, the flexibility electrical interconnection conductibility Ground is joined to the surface of the first solar cell and reconciles the thermal expansion of the first solar cell in two dimension.
26C6.According to the equipment described in clause 25C6, wherein the first part of the interconnection piece surrounds the first superbattery Edge fold so that remaining second interconnecting parts are located on the back side of the first superbattery.
27C6.According to the equipment described in clause 1C6, wherein the module has in the front surface towards solar energy direction Top conduction band, the equipment further includes：
Another module, another described module have setting the second superbattery on the front surface, away from it is described too Bottom belt in another module of positive energy, and
Wherein the second module is Chong Die with a part for the first module including top tape and is joined to the part.
28C6.According to the equipment described in clause 27C6, wherein another described module passes through adhesive bond to the mould Block.
29C6.Further include the terminal box Chong Die with another module according to the equipment described in clause 27C6.
30C6.According to the equipment described in clause 29C6, wherein another described module passes through the terminal box and another Pairing arrangement between another terminal box in module is joined to the module.
31C6.According to the equipment described in clause 29C6, wherein the terminal box accommodates individual module terminal.
32C6.Further include opening between the module and another described module according to the equipment described in clause 27C6 It closes.
33C6.According to the equipment described in clause 32C6, further include and the voltage sensing controller for switching and being connected to.
34C6.According to the equipment described in clause 27C6, wherein the first superbattery includes being electrically connected with single bypass diode No less than 19 solar cells connect.
35C6.According to the equipment described in clause 34C6, wherein the single bypass diode is located in the first module edge Near.
36C6.According to the equipment described in clause 34C6, wherein the single bypass diode is located in laminate structures.
37C6.According to the equipment described in clause 36C6, wherein superbattery is encapsulated in laminate structures.
38C6.According to the equipment described in clause 34C6, wherein the single bypass diode is located in the first module periphery Around.
39C6.According to the equipment described in clause 27C6, wherein the first superbattery and the second superbattery include being connected to A pair of electric power controller.
40C6.Further include electric power controller according to the equipment described in clause 27C6, the electric power controller by with It is set to：
Receive the voltage output of the first superbattery；
Based on the voltage, determine the solar cell of the first superbattery whether in reverse-biased；And
Reverse-biased solar cell and superbattery modular circuit are disconnected.
1C7.A kind of equipment, including：
Solar energy module, the solar energy module include front surface, and the front surface includes at least ten that the first string is connected in series with Nine silicon solar cells, each silicon solar cell has the breakdown voltage of greater than about 10V, and it is super to assemble first Battery, first superbattery include the first silicon solar cell, and first silicon solar cell is arranged so that end It is Chong Die with the second silicon solar cell, it is used in combination adhesive conductively to be engaged with the second silicon solar cell；And
Conductively it is joined to the interconnection piece of solar cell surface.
2C7.According to the equipment described in clause 1C7, wherein the solar cell surface includes the first silicon solar cell The back side.
3C7.Further include that the superbattery is electrically connected to the band-like of electrical components to lead according to the equipment described in clause 2C7 Line.
4C7.According to the equipment described in clause 3C7, wherein the ribbon conductor is conductively joined to far from overlapped ends Solar cell surface.
5C7.According to the equipment described in clause 4C7, wherein the electrical components are located in solar energy module rear surface.
6C7.According to the equipment described in clause 4C7, wherein the electrical components include terminal box.
7C7.According to the equipment described in clause 6C7, wherein the terminal box with and the Chong Die disparate modules of the module on Another terminal box pairing engagement.
8C7.According to the equipment described in clause 4C7, wherein the electrical components include bypass diode.
9C7.According to the equipment described in clause 4C7, wherein the electrical components include module terminals.
10C7.According to the equipment described in clause 4C7, wherein the electrical components include inverter.
11C7.According to the equipment described in clause 10C7, wherein the inverter includes the micro- inverters of DC/AC.
12C7.According to the equipment described in clause 11C7, wherein the micro- inverters of the DC/AC are located at table after solar energy module On face.
13C7.According to the equipment described in clause 4C7, wherein the electrical components include electric power controller.
14C7.According to the equipment described in clause 13C7, wherein the electric power controller includes switch.
15C7.According to the equipment described in clause 14C7, further include and the voltage sensing controller for switching and being connected to.
16C7.According to the equipment described in clause 13C7, wherein the electric power controller is configured to：
Receive the voltage output of superbattery；
Based on the voltage, determine the solar cell of superbattery whether in reverse-biased；And
Reverse-biased solar cell and superbattery modular circuit are disconnected.
17C7.According to the equipment described in clause 16C7, wherein the electric power controller is electrically connected with central inverter.
18C7.According to the equipment described in clause 13C7, wherein the electric power controller includes that DC/DC modular powers are excellent Change device.
19C7.According to the equipment described in clause 3C7, wherein the interconnection piece is clipped in the superbattery and the preceding table Between another superbattery on face.
20C7.According to the equipment described in clause 3C7, wherein the ribbon conductor is conductively joined to the interconnection piece.
21C7.According to the equipment described in clause 3C7, wherein the interconnection piece is by the electricity less than or equal to about 0.012 ohm Resistance is supplied to electric current.
22C7.According to the equipment described in clause 3C7, wherein the interconnection piece is configured to be directed to about -40 DEG C to about 85 DEG C Between the differential expansion that reconciles between the first silicon solar cell and the interconnection piece of temperature range.
23C7.According to the equipment described in clause 3C7, wherein the thickness of the interconnection piece is less than or equal to about 100 microns.
24C7.According to the equipment described in clause 3C7, wherein the thickness of the interconnection piece is less than or equal to about 30 microns.
25C7.According to the equipment described in clause 3C7, wherein superbattery has at least about 500mm's in the flow direction Length.
26C7.Further include another superbattery in the module front surface according to the method described in clause 3C7.
27C7.According to the equipment described in clause 26C7, wherein the interconnection piece will another described superbattery with it is described Superbattery is connected in series with.
28C7.According to the equipment described in clause 26C7, wherein the interconnection piece will another described superbattery with it is described Superbattery is connected in parallel.
29C7.According to the equipment described in clause 26C7, wherein the front surface includes white liner, the white liner It is characterized in that corresponding to the dark-coloured item of the position in gap and width between the superbattery and another described superbattery Line.
30C7.According to the equipment described in clause 3C7, wherein the interconnection piece includes pattern.
31C7.According to the equipment described in clause 30C7, wherein the pattern includes slit, groove and/or hole.
32C7.According to the equipment described in clause 3C7, wherein a part for the interconnection piece is dark-coloured.
33C7.According to the equipment described in clause 3C7, wherein：
First silicon solar cell includes chamfering；
Second silicon solar cell lacks chamfering；And
The front surface area that each silicon solar cell of the superbattery is exposed under sunlight is substantially equal.
34C7.According to the equipment described in clause 3C7, wherein：
First silicon solar cell includes chamfering；
Second silicon solar cell includes chamfering；And
The side includes the long side Chong Die with the long side of the second silicon solar cell.
35C7.According to the equipment described in clause 3C7, wherein the interconnection piece forms bus.
36C7.According to the equipment described in clause 3C7, wherein the interconnection piece is conductively joined at cemented joint Solar cell surface.
37C7.According to the equipment described in clause 3C7, wherein the first part of the interconnection piece surrounds the side of superbattery Edge folds so that remaining second part is located on the back side of superbattery.
38C7.Further include the metallization pattern in the front surface, and include edge according to the equipment described in clause 3C7 The line of long side extension, the equipment further includes multiple discrete engagement pads between the line and the long side.
39C7.According to the equipment described in clause 38C7, wherein：
The metallization further includes the finger-shaped material for being electrically connected to corresponding discrete engagement pad and extending perpendicular to the long side；And And
Conductive threads interconnect finger-shaped material.
40C7.According to the equipment described in clause 38C7, wherein the metallization pattern includes protruding features, it is viscous to limit The sprawling of mixture.
1C8.A kind of equipment, including：
Arrange that rows of multiple superbatteries, each superbattery include that there is at least 10V to hit in solar energy module front surface Straight at least 19 silicon solar cells of arrangement for wearing voltage, wherein the end sections weight of adjacent silicon solar cell It folds and conductively engages, the silicon solar cell is electrically connected in series；
The end of the first superbattery of module edge is via the preceding table for being joined to the first superbattery wherein in first row The flexible electrical interconnection in face and the end for being electrically connected to the second superbattery of module edge in neighbouring second row.
2C8.According to the equipment described in clause 1C8, wherein a part for the flexible electrical interconnection piece is covered by dark-coloured film.
3C8.According to the equipment described in clause 2C8, wherein the solar energy module front surface includes backer board, the back of the body Liner plate reduces the visual contrast with the flexible electrical interconnection.
4C98.According to the equipment described in clause 1C8, wherein a part for the flexible electrical interconnection piece is colored.
5C8.According to the equipment described in clause 4C8, wherein the solar energy module front surface includes backer board, the back of the body Liner plate reduces the visual contrast with the flexible electrical interconnection.
6C8.According to the equipment described in clause 1C8, wherein the solar energy module front surface includes white backing plate.
7C8.Further include the dark-coloured striped in gap between corresponding to the row according to the equipment described in clause 6C8.
8C8.According to the equipment described in clause 6C8, wherein the n-type semiconductor layer of the silicon solar cell is towards backing Plate.
9C8.According to the equipment described in clause 1C8, wherein：
The solar energy module front surface includes backer board；And
Backer board, flexible electrical interconnection, the first superbattery and encapsulant include laminate structures.
10C8.According to the equipment described in clause 9C8, wherein the encapsulant includes thermoplastic polymer.
11C8.According to the equipment described in clause 10C8, wherein the thermoplastic polymer includes thermoplastic olefin Object.
12C8.Further include glass front plate according to the equipment described in clause 9C8.
13C8.According to the method described in clause 12C8, wherein the backer board includes glass.
14C8.According to the equipment described in clause 1C8, wherein the flexible electrical interconnection piece engages at multiple discrete positions.
15C8.According to the equipment described in clause 1C8, wherein the flexible electrical interconnection piece engages material with conductive adhesive Material engagement.
16C8.Further include cemented joint according to the equipment described in clause 1C8.
17C8.According to the equipment described in clause 1C8, prolong wherein the flexible electrical interconnection piece is parallel to the module edge It stretches.
18C8.According to the equipment described in clause 1C8, wherein a part for the flexible electrical interconnection piece is super around first Battery is folded and is hidden.
19C8.Further include that the first superbattery is electrically connected to the band-like of electrical components according to the equipment described in clause 1C8 Conducting wire.
20C8.According to the equipment described in clause 19C8, wherein the ribbon conductor is conductively joined to flexible electrical interconnection Part.
21C8.According to the equipment described in clause 19C8, wherein the ribbon conductor is conductively joined to far from overlapping ends The solar cell surface in portion.
22C8.According to the equipment described in clause 19C8, wherein the electrical components are located in solar energy module rear surface.
23C8.According to the equipment described in clause 19C8, wherein the electrical components include terminal box.
24C8.According to the equipment described in clause 23C8, wherein in the terminal box and another solar energy module front surface Another terminal box pairing engagement.
25C8.According to the equipment described in clause 23C8, wherein the terminal box includes single terminal terminal box.
26C8.According to the equipment described in clause 19C8, wherein the electrical components include bypass diode.
27C8.According to the equipment described in clause 19C8, wherein the electrical components include switch.
28C8.Further include voltage sensing controller according to the equipment described in clause 27C8, the voltage sensing controller It is configured to：
Receive the voltage output of the first superbattery；
Based on the voltage, determine the solar cell of the first superbattery whether in reverse-biased；And
It is connected to the switch, reverse-biased solar cell and superbattery modular circuit is disconnected.
29C8.According to the equipment described in clause 1C8, wherein the first superbattery is connected with the superbattery.
30C8.According to the equipment described in clause 1C8, wherein：
First silicon solar cell of the first superbattery includes chamfering；
Second silicon solar cell of the first superbattery lacks chamfering；And
The front surface area that each silicon solar cell of first superbattery is exposed under sunlight is substantially equal.
31C8.According to the equipment described in clause 1C8, wherein：
First silicon solar cell of the first superbattery includes chamfering；
Second silicon solar cell of the first superbattery includes chamfering；And
The long side of first silicon solar cell is Chong Die with the long side of the second silicon solar cell.
32C8.According to the equipment described in clause 1C8, wherein the silicon solar cell of the first superbattery includes having about The item of the length of 156mm.
33C8.According to the equipment described in clause 1C8, wherein the silicon solar cell of the first superbattery includes having about The item of the length of 125mm.
34C8.According to the equipment described in clause 1C8, wherein the silicon solar cell of the first superbattery includes item, it is described Item has about 1:2 to about 1:The length-width ratio between width and length between 20.
35C8.According to the equipment described in clause 1C8, wherein the overlapping adjacent silicon of the first superbattery is used for solar batteries Adhesive conductively engages, and the equipment further includes being configured to the feature of limitation adhesive sprawling.
36C8.According to the equipment described in clause 35C8, wherein the feature includes trench.
37C8.According to the equipment described in clause 36C8, wherein the trench is formed by metallization pattern.
38C8.According to the equipment described in clause 37C8, wherein the metallization pattern includes along silicon solar electricity The line that the long side in pond extends, the equipment further includes multiple discrete engagement pads between the line and the long side.
39C8.According to the equipment described in clause 37C8, wherein the metallization pattern is located at the silicon of the first superbattery too On the front of positive energy battery.
40C8.According to the equipment described in clause 37C8, wherein the metallization pattern is located at the silicon of the second superbattery too On the back of positive energy battery.
1C9.A kind of equipment, including：
Solar energy module, the solar energy module include front surface, and the front surface includes assembling the string of the first superbattery Connection connection silicon solar cell, first superbattery include the first cutting rod, and first cutting rod has along with the The front side metallization pattern of first external margin of two cutting rods overlapping.
2C9.According to the equipment described in clause 1C9, therefrom separated wherein the first cutting rod and the second cutting rod have to reappear The length of the wafer shape of first cutting rod.
3C9.According to the equipment described in clause 2C9, wherein the length is 156mm.
4C9.According to the equipment described in clause 2C9, wherein the length is 125mm.
5C9.According to the equipment described in clause 2C9, wherein length-width ratio between the width and length of the first cutting rod between About 1:2 to about 1:Between 20.
6C9.According to the equipment described in clause 2C9, wherein the first cutting rod includes the first chamfering.
7C9.According to the equipment described in clause 6C9, wherein the first chamfering is along the first external margin.
8C9.According to the equipment described in clause 6C9, wherein the first chamfering is not along the first external margin.
9C9.According to the equipment described in clause 6C9, wherein the second cutting rod includes the second chamfering.
10C9.According to the equipment described in clause 9C9, wherein the overlapping edge of the second cutting rod includes the second chamfering.
11C9.According to the equipment described in clause 9C9, wherein the overlapping edge of the second cutting rod does not include the second chamfering.
12C9.According to the equipment described in clause 6C9, wherein the length is reappearing therefrom the standard of separately the first cutting rod just The shape of square wafer.
13C9.According to the equipment described in clause 6C9, wherein the width of different size in the second cutting rod of the first cutting rod Degree so that the first cutting rod and the second cutting rod have roughly equal area.
14C9.According to the equipment described in clause 1C9, wherein the second cutting rod about 1mm to 5mm Chong Die with the first cutting rod.
15C9.According to the equipment described in clause 1C9, wherein the front side metallization pattern includes bus.
16C9.According to the equipment described in clause 15C9, wherein bus includes conical section.
17C9.According to the equipment described in clause 1C9, wherein the front side metallization pattern includes discrete engagement pad.
18C9.According to the equipment described in clause 17C9, wherein：
Second cutting rod passes through adhesive bond to the first cutting rod；And
Discrete engagement pad further includes the feature for limiting adhesive sprawling.
19C9.According to the equipment described in clause 18C9, wherein the feature includes trench.
20C9.According to the equipment described in clause 1C9, wherein the front side metallization pattern includes bypass wire.
21C9.According to the equipment described in clause 1C9, wherein the front side metallization pattern includes finger-shaped material.
22C9.According to the equipment described in clause 1C9, wherein the first cutting rod further include along with the first external margin phase To the second external margin back side metallization pattern.
23C9.According to the equipment described in clause 22C9, wherein the back side metallization pattern includes engagement pad.
24C9.According to the equipment described in clause 22C9, wherein the back side metallization pattern includes bus.
25C9.According to the equipment described in clause 1C9, wherein the superbattery includes at least 19 silicon cutting rods, often A silicon cutting rod has greater than about 10 volts of breakdown voltage.
26C9.According to the method described in clause 1C9, wherein the superbattery with it is another in the module front surface A superbattery connection.
27C9.According to the equipment described in clause 26C9, wherein the module front surface includes white liner, the white Liner is characterized in that corresponding to the dark-coloured striped in gap between the superbattery and another described superbattery.
28C9.According to the equipment described in clause 26C9, wherein：
The solar energy module front surface includes backer board；And
Backer board, interconnection piece, superbattery and encapsulant include laminate structures.
29C9.According to the equipment described in clause 28C9, wherein the encapsulant includes thermoplastic polymer.
30C9.According to the equipment described in clause 29C9, wherein the thermoplastic polymer includes thermoplastic olefin Object.
31C9.According to the equipment described in clause 26C9, further include the superbattery and another described superbattery it Between interconnection piece.
32C9.According to the equipment described in clause 31C9, wherein a part for the interconnection piece is covered by dark-coloured film.
33C9.According to the equipment described in clause 31C9, wherein a part for the interconnection piece is colored.
34C9.Further include that the superbattery is electrically connected to the band-like of electrical components according to the equipment described in clause 31C9 Conducting wire.
35C9.According to the equipment described in clause 34C9, wherein the ribbon conductor is conductively joined to the first cutting rod Rear side.
36C9.According to the equipment described in clause 34C9, wherein the electrical components include bypass diode.
37C9.According to the equipment described in clause 34C9, wherein the electrical components include switch.
38C9.According to the equipment described in clause 34C9, wherein the electrical components include terminal box.
39C9.According to the equipment described in clause 38C9, wherein the terminal box is Chong Die with another terminal box and in matching To arrangement.
40C9.According to the equipment described in clause 26C9, wherein the superbattery and the series connection of another described superbattery Connection.
1C10.A kind of method, including：
Laser marks quarter line drawing on silicon, to define solar-electricity pool area；
Electroconductive binder grafting material is applied to the top surface for painting silicon wafer quarter of neighbouring solar-electricity pool area long side； And
Silicon wafer is divided along the quarter line drawing, to provide solar cell item, the solar cell item includes neighbouring institute State a part for the electroconductive binder grafting material of solar cell long side setting.
2C10.Further include providing metallization pattern for silicon wafer according to the method described in clause 1C10 so that described point Cut the solar cell item for generating and there is the metallization pattern along the long side.
3C10.According to the method described in clause 2C10, wherein the metallization pattern includes bus or discrete engagement pad.
4C10.According to the method described in clause 2C10, wherein the offer includes the printing metallization pattern.
5C10.According to the method described in clause 2C10, wherein the offer includes the plating metallization pattern.
6C10.According to the method described in clause 2C10, wherein the metallization pattern includes being configured to lead described in limitation The feature of electric adhesive bond material creep.
7C10.According to the equipment described in clause 6C10, wherein the feature includes trench.
8C10.According to the method described in clause 1C10, wherein the application includes printing.
9C10.According to the method described in clause 1C10, wherein described apply includes using masked-deposition.
10C10.According to the method described in clause 1C10, wherein the long side length of the solar cell item reappears chip Shape.
11C10.According to the method described in clause 10C10, wherein the length is 156mm or 125mm.
12C10.According to the method described in clause 10C10, wherein between the width and length of the solar cell item Length-width ratio is between about 1:2 to about 1:Between 20.
13C10.According to the method described in clause 1C10, wherein the segmentation includes：
The applying vacuum between the bottom surface and bent support surface of chip, so that the opposite bending branch of solar-electricity pool area Surface curvature is supportted, and to cut silicon wafer along quarter line drawing.
14C10.According to the method described in clause 1C10, further include：
Multiple solar cell items arrangement is in line, the wherein long side overlapping of adjacent solar battery item, and conductive adhesion A part for agent grafting material is disposed there between；And
Conductive bonding material is cured, to by the engagement of the solar cell item of adjacent overlapping to each other, and by their series electricals Connection.
15C10.According to the method described in clause 14C10, wherein the solidification includes applying heat.
16C10.According to the method described in clause 14C10, wherein the solidification includes applying pressure.
17C10.According to the method described in clause 14C10, wherein the arrangement includes forming layered structure.
18C10.According to the method described in clause 17C10, wherein the solidification include heat and pressure are applied to it is described Layered structure.
19C10.According to the method described in clause 17C10, wherein the layered structure includes encapsulant.
20C10.According to the method described in clause 19C10, wherein the encapsulant includes thermoplastic polymer.
21C10.According to the method described in clause 20C10, wherein the thermoplastic polymer includes thermoplastic olefin Object.
22C10.According to the method described in clause 17C10, wherein the layered structure includes backer board.
23C10.According to the method described in clause 22C10, wherein：
The backer board is white；And
The layered structure further includes dark-coloured striped.
24C10.According to the method described in clause 14C10, wherein the arrangement includes will at least 19 solar cells Item arrangement is in line.
25C10.According to the method described in clause 24C10, wherein described at least each of 19 solar cell items With at least breakdown voltage of 10V.
26C10.Further include placing at least 19 solar cell items according to the method described in clause 24C10 At being only connected to single bypass diode.
27C10.Further include at least 19 solar cell items according to the method described in clause 26C10 Ribbon conductor is formed between one and the single bypass diode.
28C10.According to the method described in clause 27C10, wherein the single bypass diode is located in terminal box.
29C10.According to the method described in clause 28C10, wherein the terminal box is located on the back side of solar energy module, It is arranged at pairing from another terminal box of different solar energy modules.
30C10.According to the method described in clause 14C10, wherein the overlapping cell strip of the multiple solar cell item with The solar cell item is overlapped about 1mm to 5mm.
31C10.According to the method described in clause 14C10, wherein the solar cell item includes the first chamfering.
32C10.According to the method described in clause 31C10, wherein the overlapping solar-electricity of the multiple solar cell item The long side of pond item does not include the second chamfering.
33C10.According to the method described in clause 32C10, wherein the width of the solar cell item is more than the overlapping The width of solar cell item, so that the solar cell item and the overlapping solar cell item have substantially phase Deng area.
34C10.According to the method described in clause 31C10, wherein the overlapping solar-electricity of the multiple solar cell item The long side of pond item includes the second chamfering.
35C10.According to the method described in clause 34C10, wherein the overlapping sun of the multiple solar cell item The long side of energy cell strip is Chong Die with including the long side of cell strip of the first chamfering.
36C10.According to the method described in clause 34C10, wherein the overlapping sun of the multiple solar cell item The long side of energy cell strip is Chong Die with not including the long side of cell strip of the first chamfering.
37C10.Further include using interconnection piece by the multiple solar cell item according to the method described in clause 14C10 It is connect with another multiple solar cell item.
38C10.According to the method described in clause 37C10, wherein a part for the interconnection piece is covered by dark-coloured film.
39C10.According to the method described in clause 37C10, wherein a part for the interconnection piece is colored.
40C10.According to the method described in clause 37C10, wherein the multiple solar cell item with described another is more A solar cell item is connected in series with.
1C11.A kind of method, including：
Silicon wafer with length is provided；
Quarter line drawing is marked on silicon, to define solar-electricity pool area；
Electroconductive binder grafting material is applied to the surface of silicon wafer；And
Silicon wafer is divided along the quarter line drawing, to provide solar cell item, the solar cell item includes neighbouring institute State a part for the electroconductive binder grafting material of solar cell long side setting.
2C11.According to the method described in clause 1C11, wherein the quarter painting and being painted including laser incising.
3C11.Quarter line drawing is drawn according to the method described in clause 2C11, including laser incising, and with after-applied conductive viscous Mixture grafting material.
4C11.It is applied to chip according to the method described in clause 2C11, including by electroconductive binder grafting material, and Subsequent laser marks quarter line drawing.
5C11.According to the method described in clause 4C11, wherein：
The application includes applying uncured electroconductive binder grafting material；And
The laser incising is painted including avoiding the heat from laser from curing uncured electroconductive binder grafting material.
6C11.According to the method described in clause 5C11, wherein described avoid including painting at selection laser power and/or quarter The distance between line and uncured electroconductive binder grafting material.
7C11.According to the method described in clause 1C11, wherein the application includes printing.
8C11.According to the method described in clause 1C11, wherein described apply includes using masked-deposition.
9C11.According to the method described in clause 1C11, wherein quarter line drawing and electroconductive binder grafting material are located at the table On face.
10C11.According to the method described in clause 1C11, wherein the segmentation includes：
The applying vacuum between wafer surface and bent support surface, so that solar-electricity pool area is against bent support surface Bending, and to cut silicon wafer along quarter line drawing.
11C11.According to the method described in clause 10C11, wherein the segmentation includes that will carve line drawing to be arranged to relative to true Empty manifold is at an angle.
12C11.According to the method described in clause 1C11, wherein the segmentation includes that pressure is applied to chip using roller.
13C11.According to the method described in clause 1C11, wherein described provide includes providing metallization pattern for silicon wafer, So that the segmentation generates the solar cell item with the metallization pattern along long side.
14C11.According to the method described in clause 13C11, wherein the metallization pattern includes bus or discrete contact Pad.
15C11.According to the method described in clause 13C11, wherein the offer includes the printing metallization pattern.
16C11.According to the method described in clause 13C11, wherein the offer includes the plating metallization pattern.
17C11.According to the method described in clause 13C11, wherein the metallization pattern includes being configured to described in limitation The feature of electroconductive binder grafting material sprawling.
18C11.According to the method described in clause 1C11, wherein the long side length of the solar cell item reappears chip Shape.
19C11.According to the method described in clause 18C11, wherein the length is 156mm or 125mm.
20C11.According to the method described in clause 18C11, wherein between the width and length of the solar cell item Length-width ratio is between about 1:2 to about 1:Between 20.
21C11.According to the method described in clause 1C11, further include：
Multiple solar cell items arrangement is in line, the wherein long side overlapping of adjacent solar battery item, and conductive adhesion A part for agent grafting material is disposed there between；And
Conductive bonding material is cured, to by the engagement of the solar cell item of adjacent overlapping to each other, and by their series electricals Connection.
22C11.According to the method described in clause 21C11, wherein：
The arrangement includes forming layered structure；And
The solidification includes that heat and pressure are applied to the layered structure.
23C11.According to the method described in clause 22C11, wherein the layered structure includes thermoplastic olefin polymer envelope Fill agent.
24C11.According to the method described in clause 22C11, wherein the layered structure includes：
White backing plate；And
Dark-coloured striped on the white backing plate.
25C11.According to the method described in clause 21C11, wherein：
Multiple chips are located in template；
Conductive adhesive grafting material distributes on multiple chips；And
Multiple chips are with fixture while to be divided into the batteries of multiple solar cell items.
26C11.According to the method described in clause 25C11, further include using multiple solar cell items as one group of transport, And the wherein described arrangement includes that multiple solar cell items are arranged into module.
27C11.According to the method described in clause 21C11, wherein the arrangement includes will have at least breakdown potential of 10V At least 19 solar cell items of pressure are only in line with single bypass diode arrangement.
28C11.Further include at least 19 solar cell items according to the method described in clause 27C11 Ribbon conductor is formed between one and the single bypass diode.
29C11.According to the method described in clause 28C11, wherein the single bypass diode is located at the first solar energy mould In first terminal box of block, first terminal box and the second terminal box of the second solar energy module are arranged at pairing.
30C11.Further include at least 19 solar cell items according to the method described in clause 27C11 One forms ribbon conductor between intelligent switch.
31C11.According to the method described in clause 21C11, wherein the overlapping cell strip of the multiple solar cell item with The solar cell item is overlapped about 1mm to 5mm.
32C11.According to the method described in clause 21C11, wherein the solar cell item includes the first chamfering.
33C11.According to the method described in clause 32C11, wherein the overlapping solar-electricity of the multiple solar cell item The long side of pond item does not include the second chamfering.
34C11.According to the method described in clause 33C11, wherein the width of the solar cell item is more than the overlapping The width of solar cell item, so that the solar cell item and the overlapping solar cell item have substantially phase Deng area.
35C11.According to the method described in clause 32C11, wherein the overlapping solar-electricity of the multiple solar cell item The long side of pond item includes the second chamfering.
36C11.According to the method described in clause 35C11, wherein the overlapping sun of the multiple solar cell item The long side of energy cell strip is Chong Die with including the long side of cell strip of the first chamfering.
37C11.According to the method described in clause 35C11, wherein the overlapping sun of the multiple solar cell item The long side of energy cell strip is Chong Die with not including the long side of cell strip of the first chamfering.
38C11.Further include using interconnection piece by the multiple solar cell item according to the method described in clause 21C11 It is connect with another multiple solar cell item.
39C11.According to the method described in clause 38C11, wherein a part for the interconnection piece covered by dark-coloured film or It is colored.
40C11.According to the method described in clause 38C11, wherein the multiple solar cell item with described another is more A solar cell item is connected in series with.
1C12.A kind of method, including：
Silicon wafer with length is provided；
Quarter line drawing is marked on silicon, to define solar-electricity pool area；
Silicon wafer is divided along line drawing is carved, to provide solar cell item；And
Apply the electroconductive binder grafting material of neighbouring solar cell long side setting.
2C12.According to the method described in clause 1C12, wherein the quarter painting and being painted including laser incising.
3C12.According to the method described in clause 1C12, wherein described apply includes silk-screen printing.
4C12.According to the method described in clause 1C12, wherein described apply includes ink jet printing.
5C12.According to the method described in clause 1C12, wherein described apply includes using masked-deposition.
6C12.According to the method described in clause 1C12, wherein it is described divide be included in chip surface and curved surface it Between applying vacuum.
7C12.According to the method described in clause 6C12, wherein the curved surface includes vacuum manifold, and described point Steamed sandwich include will carve line drawing be orientated to it is at an angle relative to vacuum manifold.
8C12.According to the method described in clause 7C12, wherein the angle is right angle.
9C12.According to the method described in clause 7C12, wherein the angle is not right angle.
10C12.According to the method described in clause 6C12, wherein bringing applying vacuum by movement.
11C12.According to the method described in clause 1C12, further include：
Multiple solar cell items arrangement is in line, the wherein long side overlapping of adjacent solar battery item, and conductive adhesion Agent grafting material is disposed there between；And
Conductive bonding material is cured, the solar cell item of adjacent overlapping is electrically connected in series.
12C12.According to the method described in clause 11C12, wherein the arrangement includes forming layered structure, the layering Structure includes encapsulant, and the method further includes to the laminated layered structure.
13C12.According to the method described in clause 12C12, wherein the small part that is cured to is carried out in laminated period.
14C12.According to the method described in clause 12C12, wherein the solidification is not carried out at the same time with laminated.
15C12.According to the method described in clause 12C12, wherein described laminated including applying vacuum.
16C12.According to the method described in clause 15C12, wherein the vacuum is applied to air bag.
17C12.According to the method described in clause 15C12, wherein the vacuum is applied to band.
18C12.According to the method described in clause 12C12, wherein the encapsulant includes thermoplastic olefin polymer.
19C12.According to the method described in clause 12C12, wherein the layered structure includes：
White backing plate；And
Dark-coloured striped on the white backing plate.
20C12.According to the method described in clause 11C12, wherein described provide includes providing metallization figure for silicon wafer Case so that the segmentation generates the solar cell item with the metallization pattern along long side.
21C12.According to the method described in clause 20C12, wherein the metallization pattern includes bus or discrete contact Pad.
22C12.According to the method described in clause 20C12, wherein the offer includes printing or galvanic metallization pattern.
23C12.According to the method described in clause 20C12, wherein the arrangement includes being come using the feature of metallization pattern Limit the sprawling of electroconductive binder grafting material.
24C12.According to the method described in clause 23C12, wherein the Q-character is on the front side of solar cell item.
25C12.According to the method described in clause 23C12, wherein the Q-character is on the back side of solar cell item.
26C12.According to the method described in clause 11C12, wherein the long side length of the solar cell item reappears chip Shape.
27C12.According to the method described in clause 26C12, wherein the length is 156mm or 125mm.
28C12.According to the method described in clause 26C12, wherein between the width and length of the solar cell item Length-width ratio is between about 1:2 to about 1:Between 20.
29C12.According to the method described in clause 11C12, wherein the arrangement includes will have at least breakdown potential of 10V At least 19 solar cell items of pressure are only in line with single bypass diode arrangement as the first superbattery.
30C12.Further include applying to lead between the first superbattery and interconnection piece according to the method described in clause 29C12 Electric adhesive bond material.
31C12.According to the method described in clause 30C12, wherein the interconnection piece is super by the first superbattery and second Cell parallel connects.
32C12.According to the method described in clause 30C12, wherein the interconnection piece is super by the first superbattery and second Battery is connected in series with.
33C12.According to the method described in clause 29C12, further include the first superbattery and single bypass diode it Between form ribbon conductor.
34C12.According to the method described in clause 33C12, wherein the single bypass diode is located at the first solar energy mould In first terminal box of block, first terminal box and the second terminal box of the second solar energy module are arranged at pairing.
35C12.According to the method described in clause 11C12, wherein the solar cell item includes the first chamfering.
36C12.According to the method described in clause 35C12, wherein the overlapping solar-electricity of the multiple solar cell item The long side of pond item does not include the second chamfering.
37C12.According to the method described in clause 36C12, wherein the width of the solar cell item is more than the overlapping The width of solar cell item, so that the solar cell item and the overlapping solar cell item have substantially phase Deng area.
38C12.According to the method described in clause 35C12, wherein the overlapping solar-electricity of the multiple solar cell item The long side of pond item includes the second chamfering.
39C12.According to the method described in clause 38C12, wherein the overlapping sun of the multiple solar cell item The long side of energy cell strip is Chong Die with including the long side of cell strip of the first chamfering.
40C12.According to the method described in clause 38C12, wherein the overlapping sun of the multiple solar cell item The long side of energy cell strip is Chong Die with not including the long side of cell strip of the first chamfering.
1C13.A kind of equipment, including：
Semiconductor wafer, the semiconductor wafer have first surface, and the first surface includes along the first external margin First metallization pattern and the second metallization pattern along second external margin opposite with first external margin, The semiconductor wafer further include between the first metallization pattern and the second metallization pattern first quarter line drawing.
2C13.According to the equipment described in clause 1C13, wherein the first metallization pattern includes discrete engagement pad.
3C13.According to the equipment described in clause 1C13, wherein the first metallization pattern include far from the first external margin and It is directed toward the first finger-shaped material of the second metallization pattern.
4C13.According to the equipment described in clause 3C13, wherein the first metallization pattern further includes along the first external margin The bus for extending and intersecting with the first finger-shaped material.
5C13.According to the equipment described in clause 4C13, wherein the second metallization pattern includes：
The second finger-shaped material of the first metallization pattern is directed toward far from the second external margin；And
The second bus for extending along the second external margin and intersecting with the second finger-shaped material.
6C13.According to the equipment described in clause 3C13, further include along the first external margin extend and with the first finger-shaped material The electroconductive binder of contact.
7C13.According to the equipment described in clause 3C13, wherein the first metallization pattern further includes the first bypass wire.
8C13.According to the equipment described in clause 3C13, wherein the first metallization pattern further includes first end conducting wire.
9C13.According to the equipment described in clause 1C13, wherein the first metallization pattern includes silver.
10C13.According to the equipment described in clause 9C13, wherein the first metallization pattern includes silver paste.
11C13.According to the equipment described in clause 9C13, wherein the first metallization pattern includes discrete contacts.
12C13.According to the equipment described in clause 1C13, wherein the first metallization pattern includes than silver-colored less expensive tin, aluminium Or another conducting wire.
13C13.According to the equipment described in clause 1C13, wherein the first metallization pattern includes copper.
14C13.According to the equipment described in clause 13C13, wherein the first metallization pattern includes electro-coppering.
15C13.Further include for mitigating compound passivation scheme according to the equipment described in clause 13C13.
16C13.According to the equipment described in clause 1C13, further include：
Keep off the third metallization figure on the first surface of the semiconductor wafer of the first external margin or the second external margin Case；And
Between third metallization pattern and the second metallization pattern second quarter line drawing, wherein first quarter line drawing in the first metal Change between pattern and third metallization pattern.
17C13.According to the equipment described in clause 16C13, wherein first quarter line drawing and the second quarter line drawing between define The ratio of first width divided by semiconductor die leaf length is about 1:2 to about 1:Between 20.
18C13.According to the equipment described in clause 17C13, wherein the length is about 156mm or about 125mm.
19C13.According to the equipment described in clause 17C13, wherein the semiconductor wafer includes chamfering.
20C13.According to the equipment described in clause 19C13, wherein：
First quarter line drawing and the first external margin define first rectangular area, first rectangular area includes two and falls The area of angle and the first metallization pattern, first rectangular area corresponds to length and the product of the second width subtracts two The combined area of chamfering, the second width are more than the first width；And
Second quarter line drawing and first quarter line drawing define the second rectangular area, second rectangular area does not include chamfering and wraps Third metallization pattern is included, the area of second rectangular area should be in the product of length and the first width.
21C13.According to the equipment described in clause 16C13, wherein third metallization pattern includes being directed toward the second metallization figure The finger-shaped material of case.
22C13.Further include the second of the semiconductor wafer opposite with first surface according to the equipment described in clause 1C13 Third metallization pattern on surface.
23C13.According to the equipment described in clause 22C13, wherein third metallization pattern includes close to the first quarter line drawing position The engagement pad set.
24C13.According to the equipment described in clause 1C13, wherein first quarter line drawing formed by laser.
25C13.According to the equipment described in clause 1C13, wherein first quarter line drawing be located in first surface.
26C13.According to the equipment described in clause 1C13, wherein the first metallization pattern includes being configured to limitation conduction The feature of adhesive sprawling.
27C13.According to the equipment described in clause 26C13, wherein the feature includes protruding features.
28C13.According to the equipment described in clause 27C13, wherein the first metallization pattern includes engagement pad, and it is described Feature includes the adjacent engagement pad and the obstacle higher than the engagement pad.
29C13.According to the equipment described in clause 26C13, wherein the feature includes recess feature.
30C13.According to the method described in clause 29C13, wherein the recess feature includes trench.
31C13.Further include the conductive adhesion contacted with the first metallization pattern according to the equipment described in clause 26C13 Agent.
32C13.According to the equipment described in clause 31C13, wherein electroconductive binder is printed.
33C13.According to the equipment described in clause 1C13, wherein the semiconductor wafer includes silicon.
34C13.According to the equipment described in clause 33C13, wherein the semiconductor wafer includes crystalline silicon.
35C13.According to the equipment described in clause 33C13, wherein the first front surface is N-shaped conduction type.
36C13.According to the equipment described in clause 33C13, wherein first front surface is p-type electric-conducting type.
37C13.According to the equipment described in clause 1C13, wherein：
First metallization pattern is away from the first external margin 5mm or less；And
Second metallization pattern is away from the second external margin 5mm or less.
38C13.According to the equipment described in clause 1C13, wherein the semiconductor wafer includes chamfering, and the first metal It includes the conical section extended around chamfering to change pattern.
39C13.According to the equipment described in clause 38C13, wherein the conical section includes bus.
40C13.According to the equipment described in clause 38C13, wherein the conical section includes connecting leading for discrete engagement pad Line.
1C14.A kind of method, including：
Marked on chip first quarter line drawing；And
Using vacuum along first quarter line drawing silicon wafer divided, to provide solar cell item.
2C14.According to the method described in clause 1C14, wherein the quarter painting and being painted including laser incising.
3C14.According to the method described in clause 2C14, wherein it is described divide be included in chip surface and curved surface it Between applying vacuum.
4C14.According to the method described in clause 3C14, wherein the curved surface includes vacuum manifold.
5C14.According to the method described in clause 4C14, wherein the wafer support is on tape, the band is moved to vacuum Manifold, and the vacuum is applied by the band.
6C14.According to the method described in clause 5C14, wherein the segmentation includes：
By first quarter line drawing be orientated to it is at an angle relative to vacuum manifold；And
First quarter line drawing at one end start to cut.
7C14.According to the method described in clause 6C14, wherein the angle is substantially right angle.
8C14.According to the method described in clause 6C14, wherein the angle is generally not right angle.
9C14.Further include applying uncured electroconductive binder grafting material according to the method described in clause 3C14.
10C14.According to the method described in clause 9C14, wherein first quarter line drawing and uncured electroconductive binder engagement Material is located in the similar face of chip.
11C14.According to the method described in clause 10C14, wherein by select laser power and/or first quarter line drawing The distance between uncured electroconductive binder grafting material, the laser incising, which is painted, avoids making uncured electroconductive binder Grafting material cures.
12C14.According to the method described in clause 10C14, wherein the similar face is opposite with wafer surface, the crystalline substance Piece surface is supported by moving a wafer into the band of curved surface.
13C14.According to the method described in clause 12C14, wherein the curved surface includes vacuum manifold.
14C14.According to the method described in clause 9C14, wherein described be applied to paints progress later at the quarter.
15C14.According to the method described in clause 9C14, wherein the progress after being applied to the segmentation.
16C14.According to the method described in clause 9C14, wherein described apply includes silk-screen printing.
17C14.According to the method described in clause 9C14, wherein described apply includes ink jet printing.
18C14.According to the method described in clause 9C14, wherein described apply includes using masked-deposition.
19C14.According to the method described in clause 3C14, wherein first quarter line drawing be located at it is following between the two：
Along the first metallization pattern in the wafer surface of the first external margin, with
Along the second metallization pattern in the wafer surface of the second external margin.
20C14.According to the method described in clause 19C14, wherein the chip further include keep off the first external margin or Third metallization pattern on the semiconductor wafer surface of second external margin, and the method further includes：
Marked between third metallization pattern and the second metallization pattern second quarter line drawing so that first quarter line drawing be located at the Between one metallization pattern and third metallization pattern；And
Along second quarter line drawing silicon wafer divided, to provide another solar cell item.
21C14.According to the method described in clause 20C14, wherein first quarter line drawing and second quarter the distance between line drawing shape At width, the width defines about 1:2 and about 1:Length-width ratio between 20, the length of wherein chip are about 125mm or about 156mm。
22C14.According to the method described in clause 19C14, wherein the first metallization pattern includes being directed toward the second metallization figure The finger-shaped material of case.
23C14.According to the method described in clause 22C14, wherein the first metallization pattern further includes and the finger-shaped material phase The bus of friendship.
24C14.According to the method described in clause 23C14, wherein the bus is in the 5mm of the first external margin.
25C14.Further include that the uncured conduction contacted with the finger-shaped material is glued according to the method described in clause 22C14 Mixture grafting material.
26C14.According to the method described in clause 19C14, wherein the first metallization pattern includes discrete engagement pad.
27C14.Further include the first metallization figure on printing or wafer electroplating according to the method described in clause 19C14 Case.
28C14.According to the method described in clause 3, further include：
The solar cell item is arranged in the first superbattery, first superbattery include at least 19 too Positive energy cell strip, each solar cell item have at least breakdown voltage of 10V, the wherein long side of adjacent solar battery item Overlapping, electroconductive binder grafting material are disposed there between；And
Conductive bonding material is cured, the solar cell item of adjacent overlapping is electrically connected in series.
29C14.According to the method described in clause 28C14, wherein the arrangement includes forming layered structure, the layering Structure includes encapsulant, and the method further includes to the laminated layered structure.
30C14.According to the method described in clause 29C14, wherein the small part that is cured to is carried out in laminated period.
31C14.According to the method described in clause 29C14, wherein the solidification is not carried out at the same time with laminated.
32C14.According to the method described in clause 29C14, wherein the encapsulant includes thermoplastic olefin polymer.
33C14.According to the method described in clause 29C14, wherein the layered structure includes：
White backing plate；And
Dark-coloured striped on the white backing plate.
34C14.According to the method described in clause 28C14, wherein the arrangement includes being limited using metallization pattern feature The sprawling of the conductive adhesive bond material of system.
35C14.According to the method described in clause 34C14, wherein the metallization pattern feature is located at solar cell item Front surface on.
36C14.According to the method described in clause 34C14, wherein the metallization pattern feature is located at solar cell item Back surface on.
37C14.According to the method described in clause 28C14, further include the first superbattery with by the second superbattery string Apply electroconductive binder grafting material between the interconnection piece of connection connection.
38C14.According to the method described in clause 28C14, further include the first superbattery single bypass diode it Between form ribbon conductor, the single bypass diode is located in the first terminal box of the first solar energy module, and described first connects Wire box and the second terminal box of the second solar energy module are arranged at pairing.
39C14.According to the method described in clause 28C14, wherein：
The solar cell item includes the first chamfering；
The long side of the overlapping solar cell item of the multiple solar cell item does not include the second chamfering；And
The width of the solar cell item is more than the width of the overlapping solar cell item, so that the solar energy Cell strip and the overlapping solar cell item have roughly equal area.
40C14.According to the method described in clause 28C14, wherein：
The solar cell item includes the first chamfering；
The long side of the overlapping solar cell item of the multiple solar cell item includes the second chamfering；And
The long side of the overlapping solar cell item of the multiple solar cell item and the solar energy for not including the first chamfering The long side of cell strip is overlapped.
1C15.A kind of method, including：
The first metallization pattern is formed along the first external margin of the first surface of semiconductor wafer；
The second metallization pattern is formed along the second external margin of first surface, outside second external margin and first Edge is opposite；And
Formed between the first metallization pattern and the second metallization pattern first quarter line drawing.
2C15.According to the method described in clause 1C15, wherein：
First metallization pattern includes the first finger-shaped material for being directed toward the second metallization pattern；And
Second metallization pattern includes the second finger-shaped material for being directed toward the first metallization pattern.
3C15.According to the method described in clause 2C15, wherein：
First metallization pattern further includes the first bus for intersecting with the first finger-shaped material and being located in the 5mm of the first external margin； And
Second metallization pattern includes the second bus for intersecting with the second finger-shaped material and being located in the 5mm of the second external margin.
4C15.According to the method described in clause 3C15, further include：
On the first surface, third metallization pattern, the third are not formed along the first external margin or the second external margin Metallization pattern includes：
The third bus parallel with the first bus, and
It is directed toward the third finger-shaped material of the second metallization pattern；And
Formed between third metallization pattern and the second metallization pattern second quarter line drawing, wherein first quarter line drawing first Between metallization pattern and third metallization pattern.
5C15.According to the method described in clause 4C15, wherein first quarter line drawing and second quarter line drawing divide one fixed width, The ratio of the length of the width and semiconductor wafer is between about 1:2 to about 1:Between 20.
6C15.According to the method described in clause 5C15, wherein the length of the semiconductor wafer is about 156mm or about 125mm。
7C15.According to the method described in clause 4C15, wherein the semiconductor wafer includes chamfering.
8C15.According to the method described in clause 7C15, wherein：
First quarter line drawing and the first external margin define the first solar-electricity pool area, the first solar-electricity pool area packet Two chamferings and the first metallization pattern are included, the first solar-electricity pool area has the first area, first area pair The combined area of two chamferings should be subtracted in the length of semiconductor wafer and the product of the first width；And
Second quarter line drawing and first quarter line drawing define the second solar-electricity pool area, the second solar-electricity pool area does not wrap It includes chamfering and includes third metallization pattern, the second solar-electricity pool area has second area, the second area Corresponding to the product of the length and second width narrower than the first width so that the first area and second area are roughly equal.
9C15.According to the method described in clause 8C15, wherein the length is about 156mm or about 125mm.
10C15.According to the method described in clause 4C15, wherein formed first quarter line drawing and formed second quarter line drawing include Laser incising is painted.
11C15.According to the method described in clause 4C15, wherein forming the first metallization pattern, forming the second metallization figure Case and formation third metallization pattern include printing.
12C15.According to the method described in clause 11C15, wherein forming the first metallization pattern, forming the second metallization Pattern and formation third metallization pattern include silk-screen printing.
13C15.According to the method described in clause 11C15, wherein it includes forming multiple contacts to form the first metallization pattern Pad, the engagement pad include silver.
14C15.According to the method described in clause 4C15, wherein forming the first metallization pattern, forming the second metallization figure Case and formation third metallization pattern include plating.
15C15.According to the method described in clause 14C15, wherein the first metallization pattern, the second metallization pattern and Third metallization pattern includes copper.
16C15.According to the method described in clause 4C15, wherein the first metallization pattern include aluminium, tin, silver, copper and/or The conducting wire more less expensive than silver.
17C15.According to the method described in clause 4C15, wherein the semiconductor wafer includes silicon.
18C15.According to the method described in clause 17C15, wherein the semiconductor wafer includes crystalline silicon.
19C15.Further include on the second surface of the semiconductor wafer, according to the method described in clause 4C15 The 4th metallization pattern is formed between in the 5mm for the position that one external margin and the second quarter paint.
20C15.According to the method described in clause 4C15, wherein first surface includes the first conduction type, and the second table Face includes second conduction type opposite with the first conduction type.
21C15.According to the method described in clause 4C15, wherein the 4th metallization pattern includes engagement pad.
22C15.Further include that conductive adhesive is applied to semiconductor wafer according to the method described in clause 3C15.
23C15.Further include applying conductive adhesive and being connect with the first finger-shaped material according to the method described in clause 22C15 It touches.
24C15.According to the method described in clause 23C15, wherein apply conductive adhesive carries out silk including the use of mask Wire mark brush or deposition.
25C15.According to the method described in clause 3C15, further include along first quarter line drawing semiconductor wafer divided, with Formation includes the first solar cell item of the first metallization pattern.
26C15.According to the method described in clause 25C15, wherein the segmentation includes applying vacuum to paint at the first quarter Line.
27C15.Further include that semiconductor wafer setting is being moved to vacuum according to the method described in clause 26C15 Take.
28C15.Further include that conductive adhesive is applied to the first solar-electricity according to the method described in clause 25C15 Pond item.
29C15.According to the method described in clause 25C15, further include：
First solar cell item is arranged in the first superbattery, first superbattery include at least 19 too Positive energy cell strip, each solar cell item have at least breakdown voltage of 10V, the wherein long side of adjacent solar battery item Overlapping, conductive adhesive are disposed there between；And
Conductive adhesive is cured, the solar cell item of adjacent overlapping is electrically connected in series.
30C15.According to the method described in clause 29C15, wherein the arrangement includes forming layered structure, the layering Structure includes encapsulant, and the method further includes to the laminated layered structure.
31C15.According to the method described in clause 30C15, wherein the small part that is cured to is carried out in laminated period.
32C15.According to the method described in clause 30C15, wherein the solidification is not carried out at the same time with laminated.
33C15.According to the method described in clause 30C15, wherein the encapsulant includes thermoplastic olefin polymer.
34C15.According to the method described in clause 30C15, wherein the layered structure includes：
White backing plate；And
Dark-coloured striped on the white backing plate.
35C15.According to the method described in clause 29C15, wherein the arrangement includes being limited with metallization pattern feature The sprawling of conductive adhesive.
36C15.According to the method described in clause 35C15, wherein the metallization pattern feature is located at the first solar-electricity In the front surface of pond item.
37C15.According to the method described in clause 29C15, further include the first superbattery with by the second superbattery string Apply conductive adhesive between the interconnection piece of connection connection.
38C15.According to the method described in clause 29C15, further include the first superbattery single bypass diode it Between form ribbon conductor, the single bypass diode is located in the first terminal box of the first solar energy module, and described first connects Wire box and the second terminal box of the second solar energy module are arranged at pairing.
39C15.According to the method described in clause 29C15, wherein：
First solar cell item includes the first chamfering；
The long side of the overlapping solar cell item of first superbattery does not include the second chamfering；And
The width of first solar cell item be more than overlapping solar cell item width so that the first solar cell item and Being overlapped solar cell item has roughly equal area.
40C15.According to the method described in clause 29C15, wherein：
First solar cell item includes the first chamfering；
The long side of the overlapping solar cell item of first superbattery includes the second chamfering；And
The long side of the overlapping solar cell item is Chong Die with not including the long side of the first solar cell item of the first chamfering.
1C16.A kind of method, including：
Silicon wafer is obtained or provides, the silicon wafer includes front surface metallization pattern, and the front surface metallization pattern includes Parallel and adjacent to the chip the first external margin arrangement the first bus or engagement pad row, and be parallel to and The second bus or the engagement pad row that second external margin of the neighbouring chip is arranged, the second external margin of the chip with First edge is opposite and parallel；
Along first external margin and second external margin for being parallel to the chip one or more quarter line drawing The silicon wafer is divided, to form multiple rectangle solar cells, wherein first bus or engagement pad row are parallel to simultaneously And the long external margin arrangement of neighbouring first rectangle solar cell, and second bus or engagement pad row are parallel to And the long external margin arrangement of neighbouring second rectangle solar cell；And
Rectangle solar cell arrangement is in line, the long side of wherein adjacent solar battery overlaps each other and conducts It engages to property, the solar cell is electrically connected in series, to form superbattery；
First bus or the engagement pad row of wherein described first rectangle solar cell are adjacent with the superbattery The bottom surface of rectangle solar cell is overlapped and is conductively joined to the bottom surface.
2C16.According to the method described in clause 1C16, wherein the second bus on second rectangle solar cell or connecing Touch pad row is Chong Die with the bottom surface of adjacent rectangle solar cell in the superbattery and is conductively joined to the bottom Portion surface.
3C16.According to the method described in clause 1C16, wherein the silicon wafer is square or dead square silicon wafer.
4C16.According to the method described in clause 3C16, wherein the silicon wafer has length about 125mm or length about The side of 156mm.
5C16.According to the method described in clause 3C16, wherein the ratio of the length of each rectangle solar cell and width is situated between In about 2:1 and about 20:Between 1.
6C16.According to the method described in clause 1C16, wherein the silicon wafer is crystal silicon wafer.
7C16.According to the method described in clause 1C16, wherein the first bus or engagement pad row and the second bus or engagement pad It ranks in the fringe region of the silicon wafer, the fringe region converts the light to center of the efficiency than silicon wafer of electricity Domain is lower.
8C16.According to the method described in clause 1C16, wherein the front surface metallization pattern includes being electrically connected to first More than first a parallel fingers that bus or engagement pad are arranged and extended internally from the first external margin of the chip, and electricity It is connected to more than second a parallel fingers that the second bus or engagement pad are arranged and extended internally from the second external margin of the chip Object.
9C16.According to the method described in clause 1C16, wherein the front surface metallization pattern includes being parallel to first always Line or engagement pad row and the second bus or engagement pad row are orientated and at least third bus between them or engagement pad are arranged, And the multiple parallel fingers of third of third bus or engagement pad row are orientated normal to and are electrically connected to, and described Silicon wafer is partitioned to form after multiple rectangle solar cells, third bus or engagement pad row be disposed parallel to and The long external margin of neighbouring third rectangle solar cell.
10C16.It is applied to the first bus or contact according to the method described in clause 1C16, including by conductive adhesive Pad row conductively engages whereby by first rectangle solar cell and arrives adjacent solar cell.
11C16.According to the method described in clause 10C16, wherein the metallization pattern includes being configured to limitation conduction Property adhesive sprawling barrier.
12C16.Apply conductive adhesive according to the method described in clause 10C16, including by silk-screen printing.
13C16.Apply conductive adhesive according to the method described in clause 10C16, including by ink jet printing.
14C16.According to the method described in clause 10C16, passed wherein being formed in the silicon wafer and being applied before carving line drawing The property led adhesive.
15C16.According to the method described in clause 1C16, wherein including along one or more quarter line drawing segmentation silicon wafer The applying vacuum between the bottom surface and bent support surface of silicon wafer, so that silicon wafer is against bent support surface curvature, To along one or more quarter line drawing silicon wafer cut.
16C16.According to the method described in clause 1C16, wherein：
The silicon wafer is the dead square silicon wafer for including chamfering, and the silicon wafer segmentation after formed it is described more A rectangle solar cell, one or more of described rectangle solar cell include one or more of described chamfering； And
By making to be more than and lack down with including the vertical width of the long axis of rectangle solar cell of chamfering The vertical width of the long axis of the rectangle solar cell at angle, to select to carve the interval between line drawing to mend The chamfering is repaid, therefore, during the superbattery works, the multiple rectangle solar-electricity in the superbattery The area that each of pond is exposed under sunlight is substantially equal.
17C16.It is arranged between transparent front plate and back plate according to the method described in clause 1C16, including by superbattery Layered structure in, and to the layered structure carry out it is laminated.
18C16.According to the method described in clause 17C16, wherein carrying out laminated completion setting super to the layered structure The solidification of conductive adhesive, adjacent rectangle solar cell is passed between adjacent rectangle solar cell in grade battery It is joined to each other to the property led.
19C16.According to the method described in clause 17C16, wherein the superbattery is arranged in the layered structure One in the superbattery of two or more parallels, and the back plate is the white board for including parallel dark-coloured striped, It is described dead color striped position and width correspond to the two or more parallels superbattery between gap position And width so that the white portion of the back plate is invisible by respectively arranging the gap between superbattery in assembling module.
20C16.According to the method described in clause 17C16, wherein the foreboard and the back plate are glass plates, and institute It states superbattery to be encapsulated in thermoplastic olefin layer, the thermoplastic olefin layer is clipped between glass plate.
21C16.It is arranged in the first module according to the method described in clause 1C16, including by superbattery, described first Module includes the terminal box at pairing arrangement with the second terminal box of the second solar energy module.
1D.A kind of solar energy module, including：
Multiple superbatteries of two or more parallels are arranged to, each superbattery includes arranging straight multiple squares The silicon solar cell of shape or substantial rectangular, wherein the long side overlapping of adjacent silicon solar cell and directly with one another conductibility Ground is engaged so that the silicon solar cell to be electrically connected in series；
The first hiding tap engagement pad on the back surface of the first solar cell, first solar cell Positioned at the centre position along first superbattery；And
Conductively it is joined to the first electrical interconnection of the first hiding tap engagement pad；
Wherein the first electrical interconnection includes stress relief feature, the stress relief feature reconcile the electrical interconnection with it is described Differential thermal expansion between the silicon solar cell that electrical interconnection is engaged.
2D.Include second on the back surface of the second solar cell according to the solar energy module described in clause 1D Hiding tap engagement pad, second solar cell are located near the first solar cell, and positioned at along second The centre position of superbattery, wherein the first hiding tap engagement pad by first electrical interconnection by be electrically connected to second Hiding tap engagement pad.
3D.According to the solar energy module described in clause 2D, wherein the first electrical interconnection extend through the first superbattery with Gap between second superbattery, and conductively it is joined to the second hiding tap engagement pad.
4D.According to the solar energy module described in clause 1D, including：On the back surface of the second solar cell Two hiding tap engagement pads, second solar cell are located at another interposition along first superbattery It sets；Conductively it is joined to the second electrical interconnection of the second hiding tap engagement pad；And bypass diode, the side Road diode is hidden using the first electrical interconnection and the second electrical interconnection with positioned at the first hiding tap engagement pad and second Tap engagement pad between solar cell parallel connection electrical connection.
5D.According to the solar energy module described in clause 1D, wherein the first hiding tap engagement pad is arranged on and the Multiple hiding taps on the back surface of the first solar cell in the row that the long axis of one solar cell extends in parallel One in head engagement pad, and wherein the first electrical interconnection is conductively joined to each in multiple hiding contacts, And it is substantially equal to the length of the first solar cell along the span of the long axis.
6D.According to the solar energy module described in clause 1D, wherein the position and first of the first hiding tap engagement pad The short side of the back surface of solar cell is adjacent, first electrical interconnection not along the long axis of the solar cell from The hiding tap engagement pad substantially extends internally, and the back surface metallization pattern on the first solar cell Conducting path is provided for the interconnection piece, the conducting path has film resistor of 5 ohm less than or equal to about every square.
7D.According to the solar energy module described in clause 6D, wherein the film resistor is 2.5 less than or equal to about every square Ohm.
8D.According to the solar energy module described in clause 6D, wherein the first interconnection piece includes being located in stress relief feature Two protruding portions on opposite side, and one of protruding portion is conductively joined to the first hiding tap engagement pad.
9D.According to the solar energy module described in clause 8D, wherein described two protruding portions have different length.
10D.According to the solar energy module described in clause 1D, wherein the first electrical interconnection includes alignment characteristics, the alignment The required alignment of feature recognition and the first hiding tap engagement pad.
11D.According to the solar energy module described in clause 1D, wherein the first electrical interconnection includes alignment characteristics, the alignment The required alignment of feature recognition and the edge of the first superbattery.
12D.According to the solar energy module described in clause 1D, with another sun being connected electrically in overlapping region Energy module arrangement is at overlapping stacking mode.
13D.A kind of solar energy module, including：
Glass front plate；
Back plate；
Multiple superbatteries of two or more parallels, Mei Gechao are arranged between the glass front plate and the back plate Grade battery includes the silicon solar cell of the multiple rectangles or substantial rectangular that are arranged to straight line, wherein adjacent silicon solar-electricity The long side in pond is overlapped and is engaged to flexible conductor directly with one another the silicon solar cell to be electrically connected in series；And
Rigidly, conductively it is joined to the first flexible electrical interconnection of the one of the multiple superbattery；
Flexible conductor between the solar cell being wherein overlapped engages provides mechanical plasticity for the superbattery, from And within the temperature range of about -40 DEG C to about 100 DEG C, reconcile be parallel to superbattery row direction on the superbattery with Thermal expansion mismatch between the glass front plate and be unlikely to damage the solar energy module；And
Rigid conductibility between wherein the first superbattery and the first flexible electrical interconnection engage force it is described first soft Property electrical interconnection within the temperature range of about -40 DEG C to about 180 DEG C, reconcile on the direction that the superbattery is arranged institute It states the thermal expansion mismatch between the first superbattery and the first flexible electrical interconnection and is unlikely to damage the solar energy mould Block.
14D.According to the solar energy module described in clause 13D, the adjacent solar battery that is wherein overlapped in superbattery it Between conductibility engagement utilize different conductive adhesions the conductibility engagement between superbattery and flexible electrical interconnection Agent.
15D.According to the solar energy module described in clause 14D, two of which conductive adhesive can be walked in identical processing Solidification in rapid.
16D.According to the solar energy module described in clause 13D, at least one solar cell side wherein in superbattery Conductibility engagement and the different conductive adhesive of the conductibility of solar cell other side engagement utilization.
17D.According to the solar energy module described in clause 16D, two of which conductive adhesive can be walked in identical processing Solidification in rapid.
18D.According to the solar energy module described in clause 13D, wherein the conductibility between the adjacent solar battery being overlapped The differential motion that engagement reconciles between each battery and glass front plate greater than or equal to about 15 microns.
19D.According to the solar energy module described in clause 13D, wherein the conductibility between the adjacent solar battery being overlapped The thickness on solar cell direction is bonded on less than or equal to about 50 microns, and perpendicular to solar cell side Upward thermal conductivity is greater than or equal to about 1.5W/ (m-K).
20D.According to the solar energy module described in clause 13D, wherein the first flexible electrical interconnection itself bears to be more than or wait It thermally expands or is heat-shrinked in about 40 microns.
21D.According to the solar energy module described in clause 13D, wherein being conductively joined in the first flexible electrical interconnection super The part of grade battery is in band-like, is formed by copper, and the thickness on the direction perpendicular to the surface that it is engaged with solar cell Degree is less than or equal to about 50 microns.
22D.According to the solar energy module described in clause 21D, wherein being conductively joined in the first flexible electrical interconnection super The part of grade battery is in band-like, is formed by copper, and the thickness on the direction perpendicular to the surface that it is engaged with solar cell Degree is less than or equal to about 30 microns.
23D.According to the solar energy module described in clause 21D, wherein the first flexible electrical interconnection includes integral type conductibility Copper part, the part are not engaged with solar cell, and are compared and be conductively joined to too in the first flexible electrical interconnection The part of positive energy battery provides higher conductibility.
24D.According to the solar energy module described in clause 21D, wherein in the plane of the solar cell surface, the One flexible electrical interconnection have on the direction of direction of current flow for flowing through the interconnection piece greater than or equal to about The width of 10mm.
25D.According to the solar energy module described in clause 21D, wherein the first flexible electrical interconnection is conductively joined to too It is positive to compare the first electrical interconnection offer conductive conducting wire of higher near battery.
26D.According to the solar energy module described in clause 13D, with another sun being connected electrically in overlapping region Energy module arrangement is at overlapping stacking mode.
27D.A kind of solar energy module, including：
Multiple superbatteries of two or more parallels are arranged to, each superbattery includes arranging straight multiple squares The silicon solar cell of shape or substantial rectangular, wherein the long side overlapping of adjacent silicon solar cell and directly with one another conductibility Ground is engaged so that the silicon solar cell to be electrically connected in series；And
Hiding tap engagement pad on the first solar cell back surface, the hiding tap engagement pad exist Non-conducting high current when normal work；
Wherein described first solar cell is located at along first superbattery in superbattery described in first row Centre position, and the hiding tap engagement pad be electrically connected in parallel in superbattery described in second row at least Two solar cells.
28D.According to the solar energy module described in clause 27D, including it is joined to hiding tap engagement pad and will be described The electrical interconnection to the second solar cell is electrically interconnected in hiding tap engagement pad, wherein the span of the electrical interconnection is real It is not equal to the length of the first solar cell in matter, and the back surface metallization pattern on the first solar cell is described Hiding tap engagement pad provides conducting path, and the conducting path has film of 5 ohm less than or equal to about every square Resistance.
29D.According to the solar energy module described in clause 27D, wherein the multiple superbattery is arranged to three or more Parallel, the spans of these parallels is equal to the solar energy module in the width on the direction that these are arranged, and institute Stating hiding tap engagement pad, to be electrically connected at least one of each superbattery row hiding on solar cell The superbattery is arranged electrical connection in parallel by engagement pad, and be connected at least one hiding tap engagement pad or It is connected to the connection of at least one bus and bypass diode or other electricity of the interconnection piece between hiding tap engagement pad Sub-device connects.
30D.According to the solar energy module described in clause 27D, including flexible electrical interconnection, the flexibility electrical interconnection passes It is joined to the property led the hiding tap engagement pad, to be electrically coupled to the second solar cell, wherein：
It is in band-like, by copper to be conductively joined to the part of the hiding tap engagement pad in the flexibility electrical interconnection It is formed, and the thickness in the vertical direction on the surface that the flexible electrical interconnection is engaged with the solar cell Less than or equal to about 50 microns；And
The conductibility between the hiding tap engagement pad and the flexible electrical interconnection, which engages, forces the flexibility Electrical interconnection bears the thermal expansion mismatch between first solar cell and the flexible electrical interconnection, and about -40 It is DEG C swollen by heat between first solar cell and second solar cell within the temperature range of about 180 DEG C, reconciling Relative motion caused by swollen makes the relative motion be unlikely to damage the solar energy module.
31D.According to the solar energy module described in clause 27D, wherein the solar energy module is at work, first hides Engagement pad can conduct the electric current of the electric current bigger than being generated in any single solar cell.
32D.According to the solar energy module described in clause 27D, wherein being covered in above the first hiding tap engagement pad The front surface of the first solar cell do not occupied by engagement pad or any other interconnection piece feature.
33D.According to the solar energy module described in clause 27D, wherein not by first in the front surface of the first solar cell Any region of the part overlapping of adjacent solar battery in superbattery is not all by engagement pad or any other interconnection piece Feature occupies.
34D.According to the solar energy module described in clause 27D, wherein most of battery in each superbattery does not have There is hiding tap engagement pad.
35D.According to the solar energy module described in clause 34D, wherein the battery with hiding tap engagement pad is compared Battery without hiding tap engagement pad can have larger light collecting zone.
36D.According to the solar energy module described in clause 27D, with another sun being connected electrically in overlapping region Energy module arrangement is at overlapping stacking mode.
37D.A kind of solar energy module, including：
Glass front plate；
Back plate；
Multiple superbatteries of two or more parallels, Mei Gechao are arranged between the glass front plate and the back plate Grade battery includes the silicon solar cell of the multiple rectangles or substantial rectangular that are arranged to straight line, wherein adjacent silicon solar-electricity The long side in pond is overlapped and is engaged to flexible conductor directly with one another the silicon solar cell to be electrically connected in series；And
Rigidly, conductively it is joined to the first flexible electrical interconnection of the one of the multiple superbattery；
Flexible conductor engagement between the solar cell being wherein overlapped is formed by the first conductive adhesive, and this is soft Property conductibility combine with less than or equal to about 800 megapascal modulus of shearing.And
The rigid conductibility between wherein the first superbattery and the described first flexible electrical interconnection is engaged by the second conduction Property adhesive formed, and the rigidity conductibility engagement have greater than or equal to about 2000 megapascal modulus of shearing.
38D.According to the solar energy module described in clause 37D, wherein the first conductive adhesive and the second conductive adhesion Agent is different, but both conductive adhesives can cure in same procedure of processing.
39D.According to the solar energy module described in clause 37D, wherein the conductibility between the adjacent solar battery being overlapped The thickness on solar cell direction is bonded on less than or equal to about 50 microns, and perpendicular to solar cell side Upward thermal conductivity is greater than or equal to about 1.5W/ (m-K).
40D.According to the solar energy module described in clause 37D, with another sun being connected electrically in overlapping region Energy module arrangement is at overlapping stacking mode.
1E.A kind of solar energy module, including：Quantity N is too greater than or equal to about the silicon of 150 rectangles or substantial rectangular Positive energy battery, the silicon solar cell are arranged to multiple superbatteries in two or more parallels, each superbattery Including arranging straight multiple silicon solar cells, wherein long side overlapping and the conductibility of adjacent silicon solar cell Ground is joined to each other, and the silicon solar cell is electrically connected in series；Wherein superbattery be electrically connected, with provide be more than or High Level DC Voltage equal to about 90 volts.
2E.According to the solar energy module described in clause 1E, including one or more flexible electrical interconnections, the flexible electrical Interconnection piece is arranged to multiple superbatteries being electrically connected in series, to provide High Level DC Voltage.
3E.According to the solar energy module described in clause 2E, including module level power electronic device, the module level power Electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.
4E.According to the solar energy module described in clause 3E, wherein the module level power electronics devices sense the Gao Zhi Galvanic electricity pressure, and the module is operated at optimum current-voltage power point.
5E.According to the solar energy module described in clause 1E, including it is electrically connected to each to adjacent serial connected super battery row's Module level power electronic device is arranged for being electrically connected in series one or more pairs of superbatteries to provide High Level DC Voltage, the module Grade power electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.
6E.According to the solar energy module described in clause 5E, wherein module level power electronic device sensing is each independent A pair of of superbattery row both ends voltage, and operate at optimum current-voltage power point each individually a pair of super Battery is arranged.
7E.According to the solar energy module described in clause 6E, wherein if individually a pair of superbattery arranges the voltage at both ends Less than threshold value, then this arranges from the circuit for providing High Level DC Voltage superbattery and disconnects by module level power electronic device.
8E.According to the solar energy module described in clause 1E, including it is electrically connected to the module of each individual superbattery row Grade power electronic device, for being electrically connected in series two or more superbatteries row to provide High Level DC Voltage, the module Grade power electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.
9E.According to the solar energy module described in clause 8E, wherein module level power electronic device sensing is each independent Superbattery row both ends voltage, and each individually superbattery row is operated at optimum current-voltage power point.
10E.According to the solar energy module described in clause 9E, wherein if individually the voltage at superbattery row both ends is low In threshold value, then module level power electronic device disconnects this individual superbattery row from the circuit for providing High Level DC Voltage.
11E.According to the solar energy module described in clause 1E, including it is electrically connected to the module of each individual superbattery Grade power electronic device, for being electrically connected in series two or more superbatteries to provide High Level DC Voltage, the module level Power electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.
12E.According to the solar energy module described in clause 11E, wherein module level power electronic device sensing is each single The voltage at only superbattery both ends, and each individual superbattery is operated at optimum current-voltage power point.
13E.According to the solar energy module described in clause 12E, wherein if individually the voltage at superbattery both ends is less than Threshold value, then module level power electronic device by this individual superbattery from provide High Level DC Voltage circuit disconnect.
14E.According to the solar energy module described in clause 1E, wherein the tap electricity segmentation that each superbattery is hidden At multiple segmentations, the solar energy module includes being electrically connected to each of each superbattery point by hiding tap The module level power electronic device of section is segmented for being electrically connected in series two or more to provide High Level DC Voltage, the module Grade power electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.
15E.According to the solar energy module described in clause 14E, wherein module level power electronic device sensing is each super The voltage at the individual segmentation both ends of each of grade battery, and operation is each individual at optimum current-voltage power point Segmentation.
16E.According to the solar energy module described in clause 15E, wherein if individually the voltage at segmentation both ends is less than threshold Value, then by this, individually segmentation disconnects module level power electronic device from the circuit for providing High Level DC Voltage.
17E.According to the solar energy module described in any one of clause 4E, 6E, 9E, 12E or 15E, wherein optimum current- Voltage power point is maximum current-voltage power point.
18E.According to the solar energy module described in any one of clause 3E to 17E, wherein the module level power electronic device Part lacks DC to DC boost parts.
19E.According to the solar energy module described in any one of clause 1E to 18E, wherein N greater than or equal to about 200, it is big In or equal to about 250, greater than or equal to about 300, greater than or equal to about 350, greater than or equal to about 400, greater than or equal to about 450, greater than or equal to about 500, greater than or equal to about 550, greater than or equal to about 600, greater than or equal to about 650, or it is more than Or it is equal to about 700.
20E.According to the solar energy module described in any one of clause 1E to 19E, wherein the High Level DC Voltage be more than or Equal to about 120 volts, greater than or equal to about 180 volts, greater than or equal to about 240 volts, greater than or equal to about 300 volts, be greater than or equal to About 360 volts, greater than or equal to about 420 volts, greater than or equal to about 480 volts, greater than or equal to about 540 volts, or be greater than or equal to About 600 volts.
21E.A kind of solar energy photovoltaic system, including：
Two or more solar energy modules of parallel connection electrical connection；And
Inverter；
Wherein each solar energy module includes quantity N greater than or equal to about the silicon solar of 150 rectangles or substantial rectangular electricity Pond, the silicon solar cell are arranged to multiple superbatteries in two or more parallels, and each mould is in the block each super Grade battery includes arranging two or more in the straight silicon solar cell in the module, and wherein adjacent silicon is too The long side of positive energy battery is overlapped and is conductively joined to each other, the silicon solar cell is electrically connected in series, and every A mould superbattery electrical connection in the block, so that module provides the high-voltage direct-current output greater than or equal to about 90 volts；And
The wherein described inverter is electrically connected to two or more solar energy modules, to which the high-voltage direct-current of these modules is defeated Go out to be transformed into alternating current.
22E.According to the solar energy photovoltaic system described in clause 21E, wherein each solar energy module includes one or more A flexibility electrical interconnection, the flexibility electrical interconnection are arranged to the superbattery in solar energy module being electrically connected in series, To provide the high-voltage direct-current output of solar energy module.
23E.Include the two or more sun being electrically connected with parallel connection according to the solar energy photovoltaic system described in clause 21E At least third solar energy module that energy mould the first solar energy module in the block is electrically connected in series, wherein third solar energy module packet Quantity N ' is included greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, the silicon solar cell arrangement At multiple superbatteries in two or more parallels, each superbattery in the third solar energy module includes institute State arranged in module it is two or more in the straight silicon solar cell, wherein the length of adjacent silicon solar cell Side is overlapped and is conductively joined to each other, the silicon solar cell is electrically connected in series, and third solar energy module In superbattery electrical connection so that module provide greater than or equal to about 90 volts high-voltage direct-current output.
24E.Include the two or more sun being electrically connected with parallel connection according to the solar energy photovoltaic system described in clause 23E At least the 4th solar energy module that energy mould the second solar energy module in the block is electrically connected in series, wherein the 4th solar energy module packet Quantity N ' is included greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, the silicon solar cell arrangement At multiple superbatteries in two or more parallels, each superbattery in the 4th solar energy module includes institute State arranged in module it is two or more in the straight silicon solar cell, wherein the length of adjacent silicon solar cell Side is overlapped and is conductively joined to each other, the silicon solar cell is electrically connected in series, and the 4th solar energy module In superbattery electrical connection so that module provide greater than or equal to about 90 volts high-voltage direct-current output.
25E.According to the solar energy photovoltaic system described in clause 21E to 24E, including fuse, the fuse arrangement is for preventing Only because any one solar energy module occur short circuit due to dissipate other solar energy modules generation power.
26E.It is described according to the solar energy photovoltaic system described in any one of clause 21E to 25E, including blocking diode Blocking diode arrangement for prevent because any one solar energy module occur short circuit due to dissipate other solar energy modules generation work( Rate.
27E.According to the solar energy photovoltaic system described in any one of clause 21E to 26E, including positive bus and negative bus, Two or more solar energy modules are electrically connected in parallel to these positive and negative buses, and inverter is also electrically connected to these positive and negative buses.
28E.According to the solar energy photovoltaic system described in any one of clause 21E to 26E, including header box, two or more A solar module is electrically connected to the header box by individual conducting wire, and the header box is in parallel electric by solar energy module Connection.
29E.According to the solar energy photovoltaic system described in clause 28E, wherein the header box includes fuse, the fuse Arrange for prevent because any one solar energy module occur short circuit due to dissipate other solar energy modules generation power.
30E.According to the solar energy photovoltaic system described in clause 28E or clause 29E, wherein the header box includes choked flow Diode, the blocking diode arrangement is for preventing other solar energy that dissipate because of the generation short circuit of any one solar energy module The power that module generates.
31E.According to the solar energy photovoltaic system described in any one of clause 21E to 30E, wherein the inverter by with It sets in the direct current pressing operation solar energy module higher than minimum value, the minimum value to be configured to avoid module reverse-biased.
32E.According to the solar energy photovoltaic system described in any one of clause 21E to 30E, wherein the inverter by with Reverse-biased for identification is set, and in the electric pressing operation solar energy module for avoiding the occurrence of reverse-biased.
33E.According to the solar energy module described in any one of clause 21E to 32E, wherein N greater than or equal to about 200, it is big In or equal to about 250, greater than or equal to about 300, greater than or equal to about 350, greater than or equal to about 400, greater than or equal to about 450, greater than or equal to about 500, greater than or equal to about 550, greater than or equal to about 600, greater than or equal to about 650, or it is more than Or it is equal to about 700.
34E.According to the solar energy module described in any one of clause 21E to 33E, wherein the High Level DC Voltage is more than Or equal to about 120 volts, greater than or equal to about 180 volts, greater than or equal to about 240 volts, greater than or equal to about 300 volts, be more than or wait In about 360 volts, greater than or equal to about 420 volts, greater than or equal to about 480 volts, greater than or equal to about 540 volts, or be more than or wait In about 600 volts.
35E.According to the solar energy photovoltaic system described in any one of clause 21E to 34E, it is located on roof.
36E.A kind of solar energy photovoltaic system, including：
First solar energy module, including quantity N is greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, The silicon solar cell is arranged to multiple superbatteries in two or more parallels, and each superbattery includes arrangement Straight multiple silicon solar cells, wherein the long side of adjacent silicon solar cell is overlapped and is conductively joined to Each other, the silicon solar cell is electrically connected in series；And
Inverter；
The wherein described superbattery electrical connection, it is inverse for being supplied to inverter above or equal to about 90 volts of High Level DC Voltage Become device and direct current is transformed into alternating current again.
37E.According to the solar energy photovoltaic system described in clause 36E, wherein the inverter is and the first solar energy module Integrated micro- inverter.
38E.According to the solar energy photovoltaic system described in clause 36E, wherein the first solar energy module includes one or more Flexible electrical interconnection, the flexibility electrical interconnection are arranged to the superbattery in solar energy module being electrically connected in series, from And provide the high-voltage direct-current output of solar energy module.
39E.According to the solar energy photovoltaic system described in any one of clause 36E to 38E, including with the first solar energy mould At least the second solar energy module that block is electrically connected in series, wherein the second solar energy module includes quantity N ' greater than or equal to about 150 The silicon solar cell of a rectangle or substantial rectangular, the silicon solar cell are arranged in two or more parallels Multiple superbatteries, each superbattery includes that the straight silicon is arranged in the module too in the second solar energy module It is two or more in positive energy battery, wherein the long side of adjacent silicon solar cell is overlapped and is conductively joined to each other, The silicon solar cell to be electrically connected in series, and the superbattery electrical connection of the second solar energy module, so that module carries For the high-voltage direct-current output greater than or equal to about 90 volts.
40E.According to the solar energy module described in any one of clause 36E to 39E, wherein the inverter lacks direct current To DC boosting component.
41E.According to the solar energy module described in any one of clause 36E to 40E, wherein N greater than or equal to about 200, it is big In or equal to about 250, greater than or equal to about 300, greater than or equal to about 350, greater than or equal to about 400, greater than or equal to about 450, greater than or equal to about 500, greater than or equal to about 550, greater than or equal to about 600, greater than or equal to about 650, or it is more than Or it is equal to about 700.
42E.According to the solar energy module described in any one of clause 36E to 41E, wherein the High Level DC Voltage is more than Or equal to about 120 volts, greater than or equal to about 180 volts, greater than or equal to about 240 volts, greater than or equal to about 300 volts, be more than or wait In about 360 volts, greater than or equal to about 420 volts, greater than or equal to about 480 volts, greater than or equal to about 540 volts, or be more than or wait In about 600 volts.
43E.A kind of solar energy module, including：
Greater than or equal to about 250 N number of rectangles or the silicon solar cell of substantial rectangular, the silicon solar cell cloth The multiple superbatteries being connected in series with being set in two or more parallels, each superbattery include that arrangement is straight Multiple silicon solar cells, wherein the long side of adjacent silicon solar cell is overlapped and uses the not only conductive but also adhesive of heat conduction It is conductively engaged with each other, the silicon solar cell in the superbattery is electrically connected in series；And
Every 25 solar cells are less than a bypass diode；
The wherein described not only conductive but also adhesive of heat conduction forms engagement between adjacent solar battery, these are bonded on vertically In the thickness on solar cell direction less than or equal to about 50 microns, and in the thermal conductivity on solar cell direction Rate is greater than or equal to about 1.5W/ (m-K).
44E.According to the solar energy module described in clause 43E, wherein the superbattery is encapsulated between foreboard and back plate Thermoplastic olefin layer in.
45E.According to the solar energy module described in clause 43E, wherein the superbattery is encapsulated in glass front plate and back plate Between.
46E.According to the solar energy module described in clause 43E, the bypass diode that every 30 solar cells include is less than One, every 50 solar cells bypass diode for including is less than one or side that every 100 solar cells include Road diode is less than one, either only including single bypass diode or including bypass diode.
47E.According to the solar energy module described in clause 43E, does not include bypass diode, only includes two poles of single bypass It manages including is no more than three bypass diodes including be no more than six bypass diodes, or including no more than ten bypasses Diode.
48E.According to the solar energy module described in clause 43E, wherein the conductibility engagement between the solar cell being overlapped Mechanical plasticity is provided for superbattery, to which within the temperature range of about -40 DEG C to about 100 DEG C, reconciliation is parallel to super electricity Thermal expansion mismatch on the direction of pond row between superbattery and glass front plate, makes the thermal expansion mismatch be unlikely to damage too Positive energy module.
49E.According to the solar energy module described in any one of clause 43E to 48E, wherein N greater than or equal to about 300, it is big In or equal to about 350, greater than or equal to about 400, greater than or equal to about 450, greater than or equal to about 500, greater than or equal to about 550, greater than or equal to about 600, greater than or equal to about 650, or greater than or equal to about 700.
50E.According to the solar energy module described in any one of clause 43E to 49E, wherein the superbattery is electrically connected To provide High Level DC Voltage, the High Level DC Voltage greater than or equal to about 120 volts, greater than or equal to about 180 volts, be more than or wait In about 240 volts, greater than or equal to about 300 volts, greater than or equal to about 360 volts, greater than or equal to about 420 volts, greater than or equal to about 480 volts, greater than or equal to about 540 volts, or greater than or equal to about 600 volts.
51E.A kind of solar energy system, including：
According to the solar energy module described in clause 43E；And
Inverter, the inverter are electrically connected to the solar energy module, and are configured for conversion and come from the solar energy mould The direct current output of block is to provide exchange output.
52E.According to the solar energy system described in clause 51E, wherein the inverter lacks DC to DC boosting section Part.
53E.According to the solar energy system described in clause 51E, wherein the inverter is configured for higher than minimum value Direct current pressing operation solar energy module, the minimum value is configured to avoid solar cell reverse-biased.
54E.According to the solar energy system described in clause 53E, wherein minimum amount of voltage that depends on temperature.
55E.According to the solar energy system described in clause 51E, wherein the inverter is configured for identifying reverse-biased shape State, and in the electric pressing operation solar energy module for avoiding the occurrence of reverse-biased.
56E.According to the solar energy system described in clause 55E, wherein the inverter is configured in solar energy module Voltage-to-current power curve local maxima region in operate solar energy module, to avoid there is reverse-biased.
57E.According to the solar energy system described in any one of clause 51E to 56E, wherein the inverter be with it is described The integrated micro- inverter of solar energy module.
1F.A method of manufacture solar cell, the method includes：
Solar cell wafer is promoted along curved surface；And
The applying vacuum between curved surface and the bottom surface of solar cell wafer so that solar cell wafer against Curved surface is bent, so that solar cell wafer be cut along one or more previous ready quarter line drawing, thus from Multiple solar cells are partitioned into solar cell wafer.
2F.According to the method described in clause 1F, wherein the curved surface is the bottom surface to solar cell wafer The bending part of the upper surface of the vacuum manifold of applying vacuum.
3F.According to the method described in clause 2F, wherein vacuum manifold applies to the bottom surface of solar cell wafer Vacuum changes along the direction of travel of solar cell wafer, and solar cell wafer is cut in vacuum manifold Reach maximum intensity in region.
4F.According to the method described in clause 2F or clause 3F, including use bending upper table of the porous belts along vacuum manifold Solar cell wafer is transmitted in face, wherein apply vacuum to the bottom of solar cell wafer by the perforation on porous belts Portion surface.
5F.According to the method described in clause 4F, wherein the perforation is arranged on porous belts, so that solar cell is brilliant Piece must be covered at least one perforation on porous belts above along the leading edge and rear of itself direction of travel.
6F.According to the method described in any one of clause 2F to 5F, including：Along vacuum manifold upper surface it is flat Region promotion solar cell wafer reaches the transition with first curvature in vacuum manifold upper surface and is bent region；Then will Solar cell wafer is advanced in vacuum manifold upper surface and cuts in the cutting region of solar cell wafer, vacuum manifold The cutting region have torsion, torsion is received tighter than first curvature.
7F.According to the method described in clause 6F, wherein continuous geometry of the curvature of the transitional region by increased curvature Function defines.
8F.According to the method described in clause 7F, wherein continuous geometry of the curvature of the cutting region by increased curvature Function defines.
9F.According to the method described in clause 6F, including the solar cell of cutting is advanced in vacuum manifold has the The cutting rear region of three curvature, third curvature are received tighter than torsion.
10F.According to the method described in clause 9F, wherein transition bending region, cutting region and the curvature for cutting rear region It is defined by the single continuous geometry function of increased curvature.
11F.According to the method described in clause 7F, clause 8F or clause 10F, wherein the continuous geometry letter of increased curvature Number is clothoid.
12F.According to the method described in any one of clause 1F to 11F, it is included in solar cell wafer and curved surface Between, one end of line drawing is first carved at every, the other end that line drawing is then carved at every applies stronger vacuum, so as to along every Item carves line drawing and provides asymmetric stress distribution, to help to carve the core that line drawing forms single cutting crackle along every, And help individually to cut crackle along every quarter line drawing sprawling.
13F.According to the method described in any one of clause 1F to 12F, including the solar cell that will cut is from bending table It is removed in face, wherein by solar cell, before being removed in curved surface, the edge of the solar cell of cutting does not connect It touches.
14F.According to the method described in any one of clause 1F to 13F, including：
It will carve on line drawing laser scribing to solar cell wafer；And
Before cutting solar cell wafer along quarter line drawing, electroconductive binder grafting material is applied to solar-electricity The top surface portion of pond chip；
The solar cell wherein each cut includes a part of conductive adhesion being arranged along the cut edge of its top surface Agent grafting material.
15F.Quarter line drawing is marked according to the method described in clause 14F, including laser, is engaged with after-applied electroconductive binder Material.
16F.According to the method described in clause 14F, including apply electroconductive binder grafting material, subsequent laser marks quarter Line drawing.
17F.A kind of solar cell system from the cutting manufactured by the method described in any one of clause 14F to 16F Make the method for solar cell string, wherein the solar cell of the cutting is rectangle, the method includes：
Multiple rectangle solar cells arrangement is in line, wherein the long side of adjacent rectangle solar cell weight in a manner of covering Folded, a part for wherein electroconductive binder grafting material is arranged between adjacent rectangle solar cell；And
The conductive bonding material is cured, to which the rectangle solar cell of adjacent overlapping be engaged with each other, and they are gone here and there Connection electrical connection.
18F.According to the method described in any one of clause 1F to 17F, wherein the solar cell wafer is square Or dead square silicon solar cell chip.
1G.A method of solar cell string is made, the method includes：
Rear surface metallization pattern is formed on each battery in one or more square solar cells；
Using single masterplate, complete front surface metallization pattern is printed onto one or more in single stencilization step On each battery in a square solar cell；
Each square solar cell is divided into two or more rectangle solar cells, to one or Multiple square solar cells form multiple rectangle solar cells, before each rectangle solar cell has completely Surface metalation pattern and rear surface metallization pattern；
Multiple rectangle solar cells are in line arrangement, the wherein long side of adjacent rectangle solar cell weight in a manner of covering It is folded；And
Rectangle solar cell in the adjacent overlapping rectangles solar cell of every a pair is conductively engaged to each other, is allowed Conductive bonding material is arranged between the two rectangle solar cells, is used for this to one in rectangle solar cell The front surface metallization pattern of battery is electrically connected to this and metallizes to the rear surface of another battery in rectangle solar cell Pattern, to which the multiple rectangle solar cell to be electrically connected in series.
2G.According to the method described in clause 1G, for limiting one or more square solar cells wherein in masterplate On front surface metallization pattern one or more features all parts be all limited to during stencilization with the masterplate In be located at the physical connections of other parts residing for masterplate in plane.
3G.According to the method described in clause 1G, wherein the front surface metallization pattern packet on each rectangle solar cell Include multiple finger-shaped materials of the long side orientation perpendicular to rectangle solar cell, and the finger-shaped material in front surface metallization pattern It is all not physically connected to each other by front surface metallization pattern.
4G.According to the method described in clause 3G, wherein the finger-shaped material has about 10 microns to about 90 microns of width.
5G.According to the method described in clause 3G, wherein the finger-shaped material has about 10 microns to about 50 microns of width.
6G.According to the method described in clause 3G, wherein the finger-shaped material has about 10 microns to about 30 microns of width.
7G.According to the method described in clause 3G, wherein the finger-shaped material has the preceding table perpendicular to rectangle solar cell About 10 microns to about 50 microns of the height in face.
8G.According to the method described in clause 3G, wherein the finger-shaped material has the front surface perpendicular to rectangle solar energy The height of about 30 microns or bigger.
9G.According to the method described in clause 3G, wherein the front surface metallization pattern packet on each rectangle solar cell Multiple engagement pads are included, the engagement pad is disposed parallel to and the edge of the long side of neighbouring rectangle solar cell, wherein often A engagement pad is positioned corresponding to the end of finger-shaped material.
10G.According to the method described in clause 3G, wherein the rear surface metallization pattern on each rectangle solar cell Including multiple engagement pads, the engagement pad is in a row parallel and adjacent to the edge arrangement of the long side of rectangle solar cell, And the rectangle solar cell per a pair of adjacent overlapping is arranged so that this to a solar energy in rectangle solar cell Each rear surface engagement pad on battery with this to the front surface metal on another solar cell in rectangle solar cell The correspondence finger-shaped material changed in pattern is aligned and is electrically connected to the corresponding finger-shaped material.
11G.According to the method described in clause 3G, wherein the rear surface metallization pattern on each rectangle solar cell Include the bus extended parallel and adjacent to the edge of the long side of rectangle solar cell, and per a pair of adjacent overlapping Rectangle solar cell be arranged so that this on a solar cell in rectangle solar cell bus with this to square The finger-shaped material in front surface metallization pattern in shape solar cell on another solar cell is overlapped and is electrically connected to institute State finger-shaped material.
12G.According to the method described in clause 3G, wherein：
Front surface metallization pattern on each rectangle solar cell includes multiple engagement pads, and the engagement pad is arranged to put down Row in and neighbouring rectangle solar cell long side edge, wherein each engagement pad is positioned corresponding to the end of finger-shaped material；
The rear surface metallization pattern on each rectangle solar cell includes multiple engagement pads, and the engagement pad is by cloth It is set to a row at the edge of the long side parallel and adjacent to the rectangle solar cell；And
Rectangle solar cell per a pair of adjacent overlapping is arranged so that this to a solar energy in rectangle solar cell Each of on battery the rear surface engagement pad with this to before described on another solar cell in rectangle solar cell Corresponding engagement pad in surface metalation pattern is aligned and is electrically connected to corresponding engagement pad.
13G.According to the method described in clause 12G, wherein the rectangle in the rectangle solar cell of every a pair of adjacent overlapping Solar cell is by being arranged the discrete of the conductive bonding material between the front surface engagement pad and rear surface engagement pad of overlapping It is joined to each other to partial conductance.
14G.According to the method described in clause 3G, wherein the rectangle in the rectangle solar cell of every a pair of adjacent overlapping Solar cell by be arranged front surface metallization pattern at this to a solar cell in rectangle solar cell and The overlapped ends of finger-shaped material in the rear surface metallization pattern to another solar cell in rectangle solar cell Between the discrete parts of conductive bonding material be conductively joined to each other.
15G.According to the method described in clause 3G, wherein the rectangle in the rectangle solar cell of every a pair of adjacent overlapping Solar cell by be arranged front surface metallization pattern at this to a solar cell in rectangle solar cell and The overlapped ends of finger-shaped material in the rear surface metallization pattern to another solar cell in rectangle solar cell Between dotted line or solid line conductive bonding material conductively engage each other, the conductive bonding material of the dotted line or solid line will One or more of described finger-shaped material is electrically interconnected.
16G.According to the method described in clause 3G, wherein：
The front surface metallization pattern on each rectangle solar cell includes multiple engagement pads, the engagement pad arrangement At the edge of the long side parallel and adjacent to the rectangle solar cell, wherein each engagement pad is positioned corresponding to finger-like The end of object；And
The rectangle solar cell in rectangle solar cell per a pair of adjacent overlapping is by being arranged at this to the rectangle sun The front surface metallization pattern of a solar cell that can be in battery and this to another sun in rectangle solar cell The discrete parts of the conductive bonding material between engagement pad in the rear surface metallization pattern of energy battery are conductively joined to Each other.
17G.According to the method described in clause 3G, wherein：
The front surface metallization pattern on each rectangle solar cell includes multiple engagement pads, the engagement pad arrangement At the edge of the long side parallel and adjacent to the rectangle solar cell, wherein each engagement pad is positioned corresponding to finger-like The end of object；And
The rectangle solar cell in rectangle solar cell per a pair of adjacent overlapping is by being arranged at this to rectangle solar energy The front surface metallization pattern of a solar cell in battery and this to another solar energy in rectangle solar cell Dotted line between engagement pad or solid line conductive bonding material in the rear surface metallization pattern of battery conductively connect each other It closes, one or more of described finger-shaped material is electrically interconnected for the dotted line or solid line conductive bonding material.
18G.According to the method described in any one of clause 1G to 17G, wherein front surface metallization pattern is by silver paste shape At.
1H.A method of the multiple solar cells of manufacture, the method includes：
One or more front surface amorphous silicon layers are deposited in the front surface of crystal silicon wafer, in solar cell working, Front surface amorphous silicon layer will be irradiated by light；
One or more rear surface amorphous silicon layers are deposited in the rear surface of crystal silicon wafer, the rear surface is located at crystal The opposite side of the front surface of silicon wafer；
By one or more front surface amorphous silicon layer patterns, to form one in one or more front surface amorphous silicon layers Or multiple front surface grooves；
It will be in front surface passivation layer deposition to the top and front surface groove of one or more front surface amorphous silicon layers；
By one or more rear surface amorphous silicon layer patterns, to form one in one or more rear surface amorphous silicon layers Or multiple rear surface grooves, each groove in one or more of rear surface grooves are formed and corresponding one Front surface groove is in line；
It will be in rear surface passivation layer deposition to the top and rear surface groove of one or more rear surface amorphous silicon layers；And
The crystal silicon wafer is cut at one or more cutting planes, each cutting planes are corresponding in different a pair Front surface groove and rear surface groove on it is placed in the middle or substantially placed in the middle.
2H.According to the method described in clause 1H, including one or more front surface grooves are formed, it is non-to penetrate front surface Crystal silicon layer reaches the front surface of crystal silicon wafer.
3H.According to the method described in clause 1H, including one or more rear surface grooves are formed, to penetrate one or more A rear surface amorphous silicon layer reaches the rear surface of crystal silicon wafer.
4H.Include forming front surface passivation layer with after with transparent conductive oxide according to the method described in clause 1H Surface passivation layer.
5H.According to the method described in clause 1H, including laser is used to cause thermal stress in crystal silicon wafer, with Crystal silicon wafer is cut at one or more cutting planes.
6H.According to the method described in clause 1H, it is included at one or more cutting planes and cuts crystal silicon wafer machinery It cuts.
7H.According to the method described in clause 1H, wherein one or more front surface amorphous silicon layer/crystal silicon layers and crystal Silicon wafer forms n-p junction.
8H.According to the method described in clause 7H, including from its back-surface side sliced crystal silicon wafer.
9H.According to the method described in clause 1H, wherein one or more rear surface amorphous silicon layer/crystal silicon layers and crystal Silicon wafer forms n-p junction.
10H.According to the method described in clause 9H, including from its front-surface side sliced crystal silicon wafer.
11H.A method of the multiple solar cells of manufacture, the method includes：
One or more grooves are formed in the first surface of crystal silicon wafer；
One or more amorphous silicon layers are deposited on the first surface of crystal silicon wafer；
By one or more amorphous silicon layers in passivation layer deposition to the groove and on the first surface of crystal silicon wafer On；
One or more amorphous silicon layers are deposited on the second surface of crystal silicon wafer, the second surface is located at crystalline silicon The opposite side of the first surface of chip；
The crystal silicon wafer is cut at one or more cutting planes, each cutting planes are one or more of It is placed in the middle or substantially placed in the middle on a different groove in groove.
12H.Include forming passivation layer with transparent conductive oxide according to the method described in clause 11H.
13H.According to the method described in clause 11H, including laser is used to cause thermal stress in crystal silicon wafer, with Crystal silicon wafer is cut at one or more cutting planes.
14H.According to the method described in clause 11H, it is included in crystal silicon wafer machinery at one or more cutting planes Cutting.
15H.According to the method described in clause 11H, wherein one or more front surface amorphous silicon layer/crystal silicon layers and crystalline substance Body silicon wafer forms n-p junction.
16H.According to the method described in clause 11H, wherein one or more rear surface amorphous silicon layer/crystal silicon layers and crystalline substance Body silicon wafer forms n-p junction.
17H.According to the method described in clause 11H, wherein in solar cell working, the first surface of crystal silicon wafer It will be irradiated by light.
18H.According to the method described in clause 11H, wherein in solar cell working, the second surface of crystal silicon wafer It will be irradiated by light.
19H.A kind of solar panels, including：
Multiple superbatteries, each superbattery includes the multiple solar cells for the arrangement that is in line, wherein adjacent solar energy The end of battery is overlapped in a manner of covering and is conductively joined to each other, to which solar cell to be electrically connected in series.
Wherein each solar cell includes：Crystalline silicon substrate；One or more first surface amorphous silicon layers, setting exist To form n-p junction on the first surface of crystalline silicon substrate；One or more second surface amorphous silicon layers are arranged in crystalline silicon On the second surface of substrate, the second surface is located at the opposite side of the first surface of crystalline silicon substrate；And passivation layer, There is Carrier recombination in the edge of the edge or second surface amorphous silicon layer that prevent first surface amorphous silicon layer, or both Prevent the edge of first surface amorphous silicon layer from preventing the edge of second surface amorphous silicon layer from Carrier recombination occur again.
20H.According to the solar panels described in clause 19H, wherein the passivation layer includes transparent conductive oxide.
21H.According to the solar panels described in clause 19H, wherein the superbattery be arranged to individually to arrange or two or Multiple parallels, to form the front surface of solar panels, during solar panels work, front surface will be irradiated by solar radiation.
Z1.A kind of solar energy module, including：
Greater than or equal to about 250 N number of rectangles or the silicon solar cell of substantial rectangular, the silicon solar cell cloth The multiple superbatteries being connected in series with being set in two or more parallels, each superbattery include that arrangement is straight Multiple silicon solar cells, wherein the long side of adjacent silicon solar cell is overlapped and uses the not only conductive but also adhesive of heat conduction It is conductively engaged with each other, the silicon solar cell in the superbattery is electrically connected in series；And
One or more bypass diodes；
Being electrically connected by bypass diode per a pair of adjacent parallel in the wherein described solar energy module, the bypass two Pole pipe is conductively joined to the rear surface electric contact on centrally located solar cell in the row to parallel, and And conductively it is joined to the rear surface electric contact in the adjacent solar battery in another row to parallel.
Z2.According to the solar energy module described in clause Z1, wherein passing through per a pair of adjacent parallel at least one other Bypass diode is electrically connected, and the bypass diode is conductively joined to the solar cell in the row to parallel On rear surface electric contact, and in the adjacent solar battery being conductively joined in another row to parallel Rear surface electric contact.
Z3.According to the solar energy module described in clause Z2, wherein passing through per a pair of adjacent parallel at least one other Bypass diode is electrically connected, and the bypass diode is conductively joined to the solar cell in the row to parallel On rear surface electric contact, and in the adjacent solar battery being conductively joined in another row to parallel Rear surface electric contact.
Z4.According to the solar energy module described in clause Z1, wherein the not only conductive but also adhesive of heat conduction is in the adjacent sun Engagement can be formed between battery, these are bonded on the thickness on solar cell direction less than or equal to about 50 microns, And in the thermal conductivity on solar cell direction greater than or equal to about 1.5W/ (m-K).
Z5.According to the solar energy module described in clause Z1, wherein the superbattery is encapsulated in front glass panel and rear glass In thermoplastic olefin layer between plate.
Z6.According to the solar energy module described in clause Z1, wherein the conductibility engagement between the solar cell being overlapped is Superbattery provides mechanical plasticity, to which within the temperature range of about -40 DEG C to about 100 DEG C, reconciliation is parallel to superbattery Thermal expansion mismatch on the direction of row between superbattery and glass front plate makes the thermal expansion mismatch be unlikely to damage the sun It can module.
Z7.According to the solar energy module described in any one of clause Z1 to Z6, wherein N greater than or equal to about 300, be more than Or equal to about 350, greater than or equal to about 400, greater than or equal to about 450, greater than or equal to about 500, greater than or equal to about 550, Greater than or equal to about 600, greater than or equal to about 650, or greater than or equal to about 700.
Z8.According to the solar energy module described in any one of clause Z1 to Z7, wherein superbattery electrical connection is to carry For High Level DC Voltage, the High Level DC Voltage greater than or equal to about 120 volts, greater than or equal to about 180 volts, greater than or equal to about 240 volts, greater than or equal to about 300 volts, greater than or equal to about 360 volts, greater than or equal to about 420 volts, greater than or equal to about 480 It lies prostrate, greater than or equal to about 540 volts, or greater than or equal to about 600 volts.
Z9.A kind of solar energy system, including：
According to the solar energy module described in clause Z1；And
Inverter, the inverter are electrically connected to the solar energy module, and are configured for conversion and come from the solar energy mould The direct current output of block is to provide exchange output.
Z10.According to the solar energy system described in clause Z9, wherein the inverter lacks DC to DC boost parts.
Z11.According to the solar energy system described in clause Z9, wherein the inverter is configured for higher than minimum value Direct current pressing operation solar energy module, the minimum value is configured to avoid solar cell reverse-biased.
Z12.According to the solar energy system described in clause Z11, wherein minimum amount of voltage that depends on temperature.
Z13.According to the solar energy system described in clause Z9, wherein the inverter is configured for identification reverse-biased, And in the electric pressing operation solar energy module for avoiding the occurrence of reverse-biased.
Z14.According to the solar energy system described in clause Z13, wherein the inverter is configured in solar energy module Voltage-to-current power curve local maxima region in operate solar energy module, to avoid there is reverse-biased.
Z15.According to the solar energy system described in any one of clause Z9 to Z14, wherein the inverter be with it is described too The integrated micro- inverter of positive energy module.
Disclosure is only used for for example, being not used in limitation.In view of disclosure, modification in addition is for this It will be evident for field technology personnel, and be intended to belong to scope of the appended claims.

Claims (55)

1. a kind of device, including：
Multiple solar cell items of solar cell wafer, each solar cell item include：
The first long edge far from solar cell wafer center；
The second long edge close to solar cell wafer center；
The first short edge between the first long edge and the second long edge and the second short edge；And
Metallization pattern before the one or more being linearly arranged along the first long edge far from solar wafer center.
2. the apparatus according to claim 1, further including：
It is arranged more between two adjacent solar cell items in multiple solar cell items of solar cell wafer Item carves line drawing.
3. the apparatus of claim 2, wherein
First long side of the internal solar cell item of one or more of multiple solar cell items of solar cell wafer Edge and the second long edge are corresponding quarter line drawing in multiple quarter line drawings；
Second long edge of multiple external solar cell strips in multiple solar cell items of solar cell wafer is more Corresponding quarter line drawing in a quarter line drawing；And
First long edge of multiple external solar cell strips is the external margin of solar cell wafer.
4. device according to claim 3, wherein
External solar cell strip includes the chamfering of one or two in the first and second short edges between the first long edge.
5. the apparatus according to claim 1, wherein
Metallization pattern includes with one or more of lower component before one or more：
Connecting bus bar, engagement pad, continuous conduction glue or discontinuous conducting resinl.
6. the apparatus according to claim 1, wherein
Metallization pattern is arranged in the front surface of solar cell item before one or more, and
Each in multiple solar cell items includes metallization pattern after the one or more on surface behind, and described one Metallization pattern is linearly arranged along the second long edge close to solar wafer center after a or multiple.
7. device according to claim 6, wherein
Multiple solar cell items are arranged with overlapping relation so that the first solar cell item in multiple solar cell items Metallization pattern is electrically connected to the second solar cell item in multiple solar cell items before the one or more of front surface Metallization pattern after the one or more of rear surface.
8. the apparatus according to claim 1, wherein
Before one or more metallization pattern relative to the planar line at the center of the front surface across solar cell wafer too It is positive to form mirror image in the front surface of battery wafer.
9. the apparatus according to claim 1, wherein
First long edge of multiple external solar cell strips is the external margin of solar cell wafer.
10. device according to claim 9, wherein
Second long edge of the external solar cell strip in multiple solar cell items of solar cell wafer is solar energy Corresponding quarter line drawing in multiple solar cell items in the front surface of battery wafer between adjacent solar cell item.
11. a kind of method, including：
Scribing is carried out to form a plurality of quarter line drawing in solar cell wafer to solar wafer；
Conductive bonding material is coated to solar cell wafer；And
After coating conductive bonding material to solar cell wafer, divide solar wafer along a plurality of quarter line drawing to provide Multiple solar cell items.
12. according to the method for claim 11, wherein
Each in multiple solar cell items has the first opposite long edge and the second length with substantially rectangular in shape Edge and opposite the first short edge and the second short edge；And
A packet in the first long edge and the second long edge of each solar cell item in multiple solar cell items Include conductive bonding material.
13. according to the method for claim 12, further including：
To in multiple solar cell items the first solar cell item and the second solar cell item be arranged so that first First long edge of solar cell item and the second long imbricate of the second solar cell item, and be provided therebetween Conductive bonding material is the first solar cell item and the second solar cell item to be electrically connected in a series arrangement.
14. according to the method for claim 11, wherein
The first solar cell article, the second solar cell article and the are at least provided along a plurality of quarter line drawing segmentation solar wafer Three solar cell items；
First solar cell item includes that opposite the first long edge and the second long edge, the first opposite short edge and second are short Edge, the first chamfering being arranged between the first short edge and the first long edge and setting are in the first long edge and the second short side The second chamfering between edge, wherein the first long edge is shorter than the second long edge；
Second solar cell item has the first long edge and the second long edge substantially rectangular in shape including opposite, opposite The first short edge and the second short edge, the first chamfering for being arranged between the first short edge and the second long edge and setting exists The second chamfering between second long edge and the second short edge, wherein the second long edge is shorter than the first short edge.
15. according to the method for claim 14, further including：
First solar cell item, the second solar cell item and third solar cell item are arranged so that：
Second long edge of the first solar cell item and the first long imbricate of the second solar cell item, and the two it Between be provided with conductive bonding material；And
Second long edge of the second solar cell item and the first long imbricate of third solar cell item, and the two it Between be provided with conductive bonding material.
16. according to the method for claim 15, further including：
The 4th solar cell article with conductive bonding material is provided, the 4th solar cell article includes opposite the first long side Edge and the second long edge, is arranged between the first short edge and the first long edge the first opposite short edge and the second short edge The first chamfering and the second chamfering for being arranged between the first long edge and the second short edge, wherein the first long edge is than second Long edge is short；And
4th solar cell article and third solar cell article are arranged so that：
Second long edge of third solar cell article and the first long imbricate of the 4th solar cell article, and the two it Between be provided with conductive bonding material.
17. according to the method for claim 11, wherein segmentation step includes at least part to solar cell wafer Applying vacuum pressure.
18. according to the method for claim 17, further including：
Solar cell wafer is supported with porous belts, wherein by the perforation of porous belts come applying vacuum pressure.
19. according to the method for claim 11, wherein
Each in multiple solar cell items includes：
The first long edge far from solar cell wafer center；
The second long edge close to solar cell wafer center；
The first short edge between first long edge and the second long edge and the second short edge；And
Coating conductive bonding material include along each in solar cell item separate solar cell wafer first Long edge linearly coats conductive bonding material.
20. according to the method for claim 19, further including：
The the first solar cell item and the second solar cell item in multiple solar cell items are arranged with overlapping relation so that The top surface at the first long edge of the first solar cell item is electrically connected to the second solar cell item by conductive bonding material The second long edge back surface.
21. according to the method for claim 11, wherein scribing includes laser scribing.
22. according to the method for claim 11, further including：
Curing conductive grafting material.
23. according to the method for claim 11, wherein it is to solar cell to carry out scribing to solar cell wafer Chip coats what conductive bonding material carried out later.
24. according to the method for claim 11, wherein coating conductive bonding material includes located continuously or discontinuously coating Conductive bonding material.
25. according to the method for claim 11, wherein it includes close to coat conductive bonding material to solar cell wafer One in a plurality of quarter line drawing edge coating conductive bonding material carved line drawing and carve line drawing only along this.
26. a kind of system, including：
Scribing machine, for forming a plurality of drafting line in solar cell wafer；
Printing machine, for coating conductive bonding material to solar cell wafer；And
Band, for dividing solar cell along a plurality of drafting line after coating conductive bonding material to solar cell wafer Chip is to provide solar cell item.
27. system according to claim 26, wherein the band is porous belts, and vacuum manifold is to solar cell The bottom surface applying vacuum of chip.
28. system according to claim 26, wherein the printing machine is silk screen, ink-jet or mask printing machine.
29. system according to claim 26, wherein the scribing machine is laser scribing means.
30. a kind of method, including：
Multiple solar cell items are provided, multiple solar cell items include：
First solar cell item, with the first long edge and the second long edge substantially rectangular in shape including opposite with And opposite the first short edge and the second short edge；
Second solar cell item comprising opposite the first long edge and the second long edge, the first opposite short edge and Two short edges, the first chamfering being arranged between the first short edge and the second long edge and setting are at the second long edge and second The second chamfering between short edge, wherein the second long edge is shorter than the first long edge；And
Third solar cell item comprising opposite the first long edge and the second long edge, the first opposite short edge and Two short edges, the first chamfering being arranged between the first short edge and the first long edge and setting are at the first long edge and second The second chamfering between short edge, wherein the first long edge is shorter than the second long edge；And
Multiple solar cell items are arranged so that：
Second long edge of the first solar cell item and the first long imbricate of the second solar cell item, and the two it Between be provided with conductive bonding material；And
Second long edge of the second solar cell item and the first long imbricate of third solar cell item, and the two it Between be provided with conductive bonding material.
31. according to the method for claim 30, wherein
It includes providing the 4th solar cell article to provide multiple solar cells article, and the 4th solar cell article has substantial square Shape shape, including the opposite first long edge and the second long edge, opposite the first short edge and the second short edge；And
The method further includes being arranged to the 4th solar cell article and third solar cell article so that：The third sun Energy the second long edge of cell strip and the first long imbricate of the 4th solar cell article, and conduction is provided therebetween Grafting material.
32. according to the method for claim 31, wherein it includes being directed to multiple solar-electricities to provide multiple solar cell items Each solar cell wafer in the chip of pond：
Scribing is carried out to form a plurality of quarter line drawing in solar cell wafer to solar wafer；
Conductive bonding material is coated to solar cell wafer；And
After coating conductive bonding material to solar cell wafer, divide solar wafer along a plurality of quarter line drawing to provide Multiple solar cell items, wherein
First solar cell article, the second solar cell article, third solar cell article and the 4th solar cell article are from more The different solar cell wafer of one or more of a solar cell wafer is split.
33. a kind of device, including：
The first N number of solar cell item of string, is arranged to the long imbricate of adjacent solar cell item, it is described it is N number of too Positive energy cell strip conductive and heat conduction engagement in a series arrangement, wherein N is 25 or more, wherein
When the first solar cell item in the first string be in reverse-biased, the heat of the first solar cell item generation will be by First string multiple solar cell heat transfer and distribute to prevent thermal damage；And
First bypass diode is connect with the first connection in series-parallel.
34. device according to claim 33, further includes：
The second N number of solar cell item of string, is arranged to the long edge of adjacent solar battery item in N number of solar cell item Overlapping, N number of solar cell item conductive and heat conduction engagement in a series arrangement, wherein
When the second solar cell item in the second string be in reverse-biased, the heat of the second solar cell item generation will be by Second string multiple solar cell heat transfer and distribute to prevent thermal damage；And
First bypass diode is connect with the second connection in series-parallel.
35. device according to claim 33, further includes：
The second N number of solar cell item of string, is arranged to the long edge of adjacent solar battery item in N number of solar cell item Overlapping, N number of solar cell item conductive and heat conduction engagement in a series arrangement, wherein
When the second solar cell item in the second string be in reverse-biased, the heat of the second solar cell item generation will be by Second string multiple solar cell heat transfer and distribute to prevent thermal damage；And
Second bypass diode is connect with the second connection in series-parallel.
36. device according to claim 33, no single one of which solar cell item or it is less than N number of solar strip group At string be connected in parallel with bypass diode.
37. device according to claim 33, wherein N are 30,50,100 or bigger.
38. a kind of device, including：
The first N number of solar cell item of string, is arranged to the long imbricate of adjacent solar cell item, it is described it is N number of too Positive energy cell strip conductive and heat conduction engagement in a series arrangement, wherein N is 25 or more, wherein
When the first solar cell item in the first string be in reverse-biased, the heat of the first solar cell item generation will be by First string multiple solar cell heat transfer and distribute to prevent thermal damage；And
Switch connects with the first series winding to make the first string be in open-circuit condition based on the electric situation of the first string.
39. according to the device described in claim 38, further include：
The second N number of solar cell item of string, is arranged to the long imbricate of adjacent solar cell item, it is described it is N number of too Positive energy cell strip conductive and heat conduction engagement in a series arrangement, wherein
When the second solar cell item in the second string be in reverse-biased, the heat of the second solar cell item generation will be by Second string multiple solar cell heat transfer and distribute to prevent thermal damage；And
Switch connects with the second series winding to make the second string be in open-circuit condition based on the electric situation of the second string.
40. according to the device described in claim 38, further include：
The second N number of solar cell item of string, is arranged to the long imbricate of adjacent solar cell item, it is described it is N number of too Positive energy cell strip conductive and heat conduction engagement in a series arrangement, wherein
When the second solar cell item in the second string be in reverse-biased, the heat of the second solar cell item generation will be by Second string multiple solar cell heat transfer and distribute to prevent thermal damage；And
Second switch connects with the second series winding to make the second string be in open-circuit condition based on the electric situation of the second string.
41. according to the device described in claim 38, wherein without single solar cell item or be less than N number of solar strip The string of composition is connect with switch in parallel.
42. according to the device described in claim 38, wherein N 30,50,100 or bigger.
43. according to the device described in claim 38, wherein the electric situation of the first string is the threshold quantity compared with desired voltage Voltage drop.
44. device according to claim 43, wherein threshold quantity is 20% or 10V.
45. device according to claim 43, wherein it is expected voltage based in the solar battery array including the first string Other circuits, and it is described switch be configured as first string in reverse-biased bypass first string and at the same time maintaining other The power generation of circuit.
46. a kind of device, including：
Multiple superbatteries are arranged as two rows or multirow, and each superbattery includes multiple solar cell items, is arranged as multiple The long imbricate of adjacent solar cell item and multiple solar cell items are led in a series arrangement in solar cell item Heat and conductive bond；
First hiding tap engagement pad, is located at the back of the body of the first solar cell item of the first superbattery in the first row On surface；
Second hiding tap engagement pad, is located at the back of the body of the second solar cell item of the second superbattery in the second row On surface, wherein the second solar cell item is adjacent with the first solar cell item；And
First electrical interconnection electrically engages to the first hiding tap engagement pad, extends across the first superbattery and second Gap and conductive bond between superbattery is to the second hiding tap engagement pad, to be incited somebody to action by the first electrical interconnection First hiding tap engagement pad is electrically connected to the second hiding tap engagement pad.
47. device according to claim 46, wherein the first electrical interconnection includes stress relief feature, reduces by first The extensional rigidity of the first electrical interconnection between hiding tap engagement pad and the second hiding tap engagement pad.
48. device according to claim 46, wherein pass through the first super electrode and the second super electricity on the first interconnection piece Gap between pond can be painted from the part that the positive emission side of solar cell module is seen, to reduce its visibility.
49. device according to claim 46, wherein the first interconnection piece includes opposite positioned at two of stress relief feature Two protruding portions on side, a conduction in the two protruding portions are bonded to the first hiding tap engagement pad.
50. device according to claim 46, wherein the first electrical interconnection includes multiple alignment characteristics, identification and first The required alignment at the edge of hiding tap engagement pad or the first super electrode.
51. a kind of solar cell module, including：
Multiple superbatteries are arranged as two rows or multirow, and each superbattery includes multiple solar cell items, is arranged as multiple The long imbricate of adjacent solar cell item and multiple solar cell items lead in a series arrangement in solar cell item Cross the heat conduction of flexible conductor grafting material and conductive bond；
First hiding tap engagement pad, is located at the back of the body of the first solar cell item of the first superbattery in the first row On surface；
Second hiding tap engagement pad, is located at the back of the body of the second solar cell item of the second superbattery in the second row On surface, wherein the second solar cell item is adjacent with the first solar cell item；And
First flexible electrical interconnection, is rigidly conducted by rigid conductive bonding material and is bonded to the first surpassing in superbattery Grade battery,
Wherein, flexible conductor grafting material is formed by the first electroconductive binder, the first electroconductive binder have less than or equal to about The modulus of shearing of 800 megapascal；And
Wherein, rigid conductive adhesive material and the first flexible electrical interconnection are second conductive by being given with the first electroconductive binder difference Adhesive is formed, and the second electroconductive binder has the modulus of shearing less than or equal to about 2000 megapascal.
52. solar cell module according to claim 51, wherein flexible conductor grafting material can reconcile each electricity Differential motion between pond and the glass front plate of solar cell module greater than or equal to about 15 microns.
53. solar cell module according to claim 51, wherein the thickness of flexible conductor grafting material is less than or waits In about 50 microns, and in the thermal conductivity on solar cell direction greater than or equal to about 1.5W/ (m-K).
54. solar cell module according to claim 51, wherein the first flexible electrical interconnection can bear to be more than or Thermal expansion or thermal contraction equal to about 40 microns.
55. solar cell module according to claim 51, wherein
Flexible conductor grafting material provides mechanical plasticity for superbattery, in about -40 DEG C to about 100 DEG C of temperature range Interior, reconciliation is parallel to the thermal expansion between superbattery and the glass front plate of solar cell module on the direction of superbattery row Mismatch, without damaging solar energy module, and
Rigid conductive grafting material between first superbattery and the first flexible electrical interconnection can force the first flexible electrical mutual Even part born within the temperature range of about -40 DEG C to about 180 DEG C on the direction of superbattery row the first super electrode with Thermal expansion mismatch between first flexible electrical interconnection, without damaging solar energy module.
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