CN108091705B - Stacking formula solar cell module - Google Patents

Stacking formula solar cell module Download PDF

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Publication number
CN108091705B
CN108091705B CN201710523237.1A CN201710523237A CN108091705B CN 108091705 B CN108091705 B CN 108091705B CN 201710523237 A CN201710523237 A CN 201710523237A CN 108091705 B CN108091705 B CN 108091705B
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China
Prior art keywords
solar battery
superbattery
solar
item
module
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CN201710523237.1A
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CN108091705A (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
Publication of CN108091705A publication Critical patent/CN108091705A/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
    • H01L31/04—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
    • 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 at least one potential-jump barrier or surface barrier
    • 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 at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier 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 or HIT® solar cells; 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
    • H01L31/18—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

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 battery 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 battery, which may be configured such that, is able to carry out single stage stencilization, and overlapping for solar battery described in the superbattery is conducive to the single stage stencilization.A kind of solar energy photovoltaic system may include the two or more such high voltage solar cell modules for being connected in parallel to each other and being electrically connected and be electrically connected to inverter.

Description

Stacking formula solar cell module
The application be on May 26th, 2015 based on the applying date, (international application no is application No. is 201580027878.7 PCT/US2015/032472), invention and created name is the division Shen of the Chinese patent application of " covering formula solar cell module " Please.
Cross reference to related applications
The priority of this international patent application requirement following patent application: on October 31st, 2014 submits entitled The No.14/530,405 United States Patent (USP) 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 battery mould Block) 14/532,293 U.S. Patent application 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, what on November 12nd, 2014 submitted The U.S. No.14/539,546 of entitled " Shingled Solar Cell Module " (covering formula solar cell module) is special Benefit application, entitled " the Shingled Solar Cell Module " submitted on November 17th, 2014 (cover formula solar-electricity Pond module) No.14/543,580 U.S. Patent applications, entitled " the Shingled Solar that on November 19th, 2014 submits The No.14/548 of Cell Module " (covering formula solar cell module), 081 U.S. Patent application, on November 21st, 2014 The No. 14/550 of entitled " Shingled Solar Cell Module " (the covering formula solar cell module) submitted, 676 U.S. Patent applications, entitled " the Shingled Solar Cell Module " submitted on November 25th, 2014 (cover formula Solar cell module) No.14/552,761 U.S. Patent applications, the entitled " Shingled that on December 4th, 2014 submits The No.14/560 of Solar Cell Module " (covering formula solar cell module), 577 U.S. Patent applications, 2014 12 The No.14/ of entitled " Shingled Solar Cell Module " (covering formula solar cell module) that the moon is submitted on the 10th 566,278 U.S. Patent applications, entitled " the Shingled Solar Cell Module " submitted on December 10th, 2014 are (folded Lid formula solar cell module) No.14/565,820 U.S. Patent applications are submitted entitled on December 16th, 2014 The 14/572,206 United States Patent (USP) Shen No. of " Shingled Solar Cell Module " (covering formula solar cell module) Please, entitled " the Shingled Solar Cell Module " that on December 19th, 2014 submits (covers formula solar battery mould Block) No.14/577,593 U.S. Patent applications, entitled " the Shingled Solar Cell submitted on December 30th, 2014 The No.14/586 of Module " (covering formula solar cell module), 025 U.S. Patent application are submitted on December 30th, 2014 Entitled " Shingled Solar Cell Module " (cover formula solar cell module) the U.S. No.14/585,917 Patent application, entitled " the Shingled Solar Cell Module " submitted on January 12nd, 2015 (cover formula solar-electricity Pond module) No.14/594,439 U.S. Patent applications, entitled " the Shingled Solar that on January 26th, 2015 submits 14/605,695 U.S. Patent application of No. of Cell Module " (covering formula solar cell module), on May 27th, 2014 The No.62/003,223 of entitled " Shingled Solar Cell Module " (the covering formula solar cell module) submitted U.S. Provisional Patent Application, entitled " the Shingled Solar Cell Module " submitted on August 12nd, 2014 (cover formula Solar cell module) No.62/036,215 U.S. Provisional Patent Applications submit entitled on August 27th, 2014 The No.62/042,615 US provisional patent of " Shingled Solar Cell Module " (covering formula solar cell module) Application, entitled " the Shingled Solar Cell Module " submitted on September 11st, 2014 (cover formula solar battery Module) No.62/048,858 U.S. Provisional Patent Applications, the entitled " Shingled that on October 15th, 2014 submits 62/064,260 U.S. Provisional Patent Application of No. of Solar Cell Module " (covering formula solar cell module), 2014 The No. of entitled " Shingled Solar Cell Module " (covering formula solar cell module) that on October 16, in submits 62/064,834 U.S. Provisional Patent Application, entitled " the Shingled Solar Cell submitted on March 31st, 2015 The No.14/ of Panel Employing Hidden Taps " (using the stacking formula solar panel of hiding tap) 674,983 U.S. Patent applications, entitled " the Solar Cell Panel Employing submitted on November 18th, 2014 The No.62/081 of Hidden Taps " (using the solar panel of hiding tap), 200 U.S. Provisional Patent Applications, Entitled " the Shingled Solar Cell Panel Employing Hidden Taps " submitted on 2 6th, 2015 (makes With the stacking formula solar panel of hiding tap " ") No.62/113,250 U.S. Provisional Patent Applications, 2014 The No.62/082,904 of entitled " High Voltage Solar Panel " (the high voltage solar panels) submitted November 21 U.S. Provisional Patent Application, (high voltage is too by entitled " the High Voltage Solar Panel " submitted on January 15th, 2015 It is positive can plate) No.62/103,816 U.S. Provisional Patent Applications, on 2 4th, 2015 entitled " the High Voltage submitted The No.62/111 of Solar Panel " (high voltage solar panels), 757 U.S. Provisional Patent Applications, on March 17th, 2015 submit (cutting tool of solar battery and the cutting side entitled " Solar Cell Cleaving Tools and Methods " Method) No.62/134,176 U.S. Provisional Patent Applications, entitled " the Shingled Solar that on April 21st, 2015 submits Cell Panel Comprising Stencil-Printed Cell Metallization " (including stencilization battery gold The stacking formula solar panel of categoryization) No.62/150,426 U.S. Provisional Patent Applications submit on August 11st, 2014 Entitled " Solar Cells with Reduced Edge Carrier Recombination " (edge Carrier recombination subtracts Light solar battery) No.62/035,624 U.S. Provisional Patent Applications, on October 15th, 2014 No.29/ submitted 506,415 US Design Patent applications, on October 20th, 2014 No.29/506 submitted, 755 United States Designs are special Benefit application, on November 5th, 2014 No.29/508 submitted, 323 US Design Patent applications mention on November 19th, 2014 The No.29/509 of friendship, 586 US Design Patent applications and the No.29/509 submitted on November 19th, 2014,588 US Design Patent application.Each patent application listed above, which is incorporated by reference, to be incorporated herein, for owning Purpose.
Technical field
Present invention relates generally to solar cell module, solar battery therein is arranged in a manner of covering.
Background technique
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.
Summary of the invention
Disclosed herein is the efficient arrangement modes of the solar battery in solar cell module, and the such sun of production The method of energy module.
On the one hand, solar energy module includes that a string of quantity N are greater than or equal to 25, the rectangle that is serially connected or essence The solar battery of upper rectangle, these solar batteries averagely have greater than about 10 volts of breakdown voltage.The solar battery It is assembled to one or more superbatteries, each superbattery includes two or more solar-electricities of arrangement of being in line Pond, wherein the long side of adjacent solar battery overlaps each other, and is conductively engaged with each other by not only conductive but also thermally conductive adhesive. In the solar battery string, without single solar battery or groups of solar battery of the sum less than N and bypass two Pole pipe individually electrical connection in parallel.Along superbattery, the lap engaged across adjacent solar battery has effectively Heat transfer is conducive to solar energy module and safely and reliably works, and this effective heat transfer avoids or reduces reverse-biased solar battery Middle hot spot is emerged.The superbattery can be packaged in the thermoplastic olefin being for example clipped between glass front plate and back glass In polymer, to further enhance module to the tolerance of thermal damage.In some variations, N can be greater than or 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 first length of the shape on these surfaces by opposite facing setting and in parallel Side and the second long side and the short side of two opposite facing settings define.Each solar battery includes: conductive front surface metal Change pattern comprising at least one front surface engagement pad of neighbouring first long side setting；And conductive back surface metallizes and schemes Case comprising at least one back surface engagement pad of neighbouring second long side setting.The silicon solar cell is in line arrangement, phase First long side of adjacent silicon solar cell and the second long side overlapping, and the front surface engagement pad on adjacent silicon solar cell and Back surface engagement pad is overlapped and is conductively joined to each other by conductive adhesive grafting material, thus by silicon solar cell It is electrically connected in series.The front surface metallization pattern of each silicon solar cell includes barrier, which is configured to manufacturing During superbattery, substantially conductive adhesive grafting material is confined to before the solidification of conductive adhesive grafting material 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 first length of the shape on these surfaces by opposite facing setting and in parallel Side and the second long side and the short side of two opposite facing settings define.Each solar battery includes: conductive front surface metal Change pattern comprising at least one front surface engagement pad of neighbouring first long side setting；And conductive back surface metallizes and schemes Case comprising at least one back surface engagement pad of neighbouring second long side setting.The silicon solar cell is in line arrangement, phase First long side of adjacent silicon solar cell and the second long side overlapping, and the front surface engagement pad on adjacent silicon solar cell and Back surface engagement pad is overlapped and is conductively joined to each other by conductive adhesive grafting material, thus by silicon solar cell It is electrically connected in series.The back surface metallization pattern of each silicon solar cell includes barrier, which is configured to manufacturing During superbattery, substantially conductive adhesive grafting material is confined to before the solidification of conductive adhesive grafting material At least one back surface engagement pad.
On the other hand, the method for making solar battery 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 arrangement that rectangle silicon solar cell is in line, and is made adjacent The long side of solar battery is overlapped and is conductively joined to each other, so that solar battery is electrically connected in series.It is the multiple Rectangle silicon solar cell includes: tool there are two at least one rectangle solar battery of chamfering, and the chamfering is corresponding to standard just The turning of square wafer or a part at turning；And respectively lack one or more rectangle silicon solar cells of chamfering.It is logical Cross the rectangle silicon solar for making the width vertical with including the long axis of rectangle silicon solar cell of chamfering be greater than and lack chamfering The vertical width of the long axis of battery, and the spacing between the parallel lines along cutting pseudo-square wafers is selected, so as to Compensate chamfering；Therefore, during the work of solar battery string, in multiple rectangle silicon solar cells in solar battery string The front surface of each battery, the area being exposed under sunlight are substantially equal.
On the other hand, superbattery includes the multiple silicon solar cells of arrangement of being in line, wherein adjacent solar battery End overlapping and be conductively joined to each other, so that solar battery is electrically connected in series.At least one silicon solar electricity Pond has chamfering, and the chamfering corresponds to one of turning or turning from the dead square silicon wafer of its cutting silicon solar cell Part；At least one silicon solar cell lacks chamfering；During the work of solar battery string, before each silicon solar cell The area that surface is exposed under sunlight is 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 rectangular silicon solar-electricities with chamfering Pond, and lack more than second a rectangle silicon solar cells of chamfering, wherein the chamfering corresponds to dead square silicon wafer The a part at turning or turning, each battery more than described second in a rectangle silicon solar cell have the first length, should 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 solar-electricities Each of pond battary removal chamfering, and the multiple rectangle silicon solar cells of third for lacking chamfering are formed, the third is more Each battery in a rectangle silicon solar cell has second length shorter than the first length.This method further include: by A rectangle silicon solar cell more than two is in line arrangement, and the long side of adjacent rectangle silicon solar cell is made to be overlapped and conductively connect It closes each other, and more than second a rectangle silicon solar cells is electrically connected in series, width is consequently formed too equal to the first length Positive energy battery strings；And the multiple rectangle silicon solar cells of third are in line arrangement, make adjacent rectangle silicon solar cell Long side is overlapped and is conductively joined to each other, and the multiple rectangle silicon solar cells of third are electrically connected in series, and is consequently formed Width is equal to the solar battery string of the second length.
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 rectangular silicon solar-electricities with chamfering Pond, and lack more than second a rectangle silicon solar cells of chamfering, wherein the chamfering corresponds to dead square silicon wafer The a part at turning or turning；More than first a rectangle silicon solar cells are in line arrangement, keep adjacent rectangle silicon solar electric The long side in pond 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, are overlapped the long side of adjacent rectangle silicon solar cell and conductibility Ground is joined to each other, and more than second a rectangle silicon solar cells are electrically connected in series.
On the other hand, superbattery includes: the multiple silicon solar cells of arrangement of being in line in a first direction, wherein phase The end of adjacent silicon solar cell is overlapped and is conductively joined to each other, so that silicon solar cell is electrically connected in series；With And elongated flexible electrical interconnection, long axis is parallel to the second direction orientation vertical with the first direction, described elongated Flexible electrical interconnection has following features: at the multiple discrete positions arranged along second direction, being conductively joined to end Hold the front surface or back surface of a silicon solar cell；At least overall with of extending end solar battery in a second direction Degree；Front surface or rear surface measurement perpendicular to end silicon solar cell, conductor thickness is less than or equal to about 100 microns；To The electric current flowed in a second direction provides the resistance less than or equal to about 0.012 ohm；It is configured to provide flexibility, the flexibility Within the temperature range of about -40 DEG C to about 85 DEG C, reconcile between end silicon solar cell and the electrical interconnection in second direction On differential expansion.
For example, the front surface and rear surface measurement, the flexibility electrical interconnection perpendicular to end silicon solar cell are 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 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, thus will Silicon solar cell is electrically connected in series.At least one end of first superbattery adjacent with the edge of module is via soft in first row Property electrical interconnection and the one end for being electrically connected to the second superbattery adjacent with the same edge of module in second row, the flexibility Electrical interconnection has following features: being joined to the first superbattery by electroconductive binder grafting material at multiple discrete positions Front surface；The edge for being parallel to module extends；Its at least part is folded in around described one end of the first superbattery, thus It is invisible in front of from 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 define multiple rectangular areas on silicon solar cell；Neighbouring each Electroconductive binder grafting material is applied to and one or more carves the silicon drawn too by one or more positions of the long side of rectangular area On positive energy battery；Divide silicon solar cell along line drawing is carved, obtains the silicon solar cell of multiple rectangles, the silicon of each rectangle is too Position adjacent with long side on its front surface is arranged in all some electroconductive binder grafting materials on positive energy battery；It will be multiple The silicon solar cell of rectangle is in line arrangement, is overlapped the long side of adjacent rectangle silicon solar cell in a manner of covering, Between a part of electroconductive binder grafting material is set；Then solidify conductive bonding material, thus by adjacent overlapping rectangles silicon Solar battery 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 define 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；One or more silicon too It is positive to apply vacuum between the bottom surface and curved support surface of battery so that one or more silicon solar cells against Curved support surface bending, and one or more silicon solar cells is caused then to obtain multiple squares along line drawing cutting is carved The silicon solar cell of shape, some electroconductive binder grafting material is arranged at it on the silicon solar cell of each rectangle The position adjacent with long side in front surface；The silicon solar cell of multiple rectangles is in line arrangement, makes adjacent rectangular silicon too The long side of positive energy battery is overlapped in a manner of covering, and is arranged between a part of electroconductive binder grafting material；Then make conductive bond Material solidification so that adjacent overlapping rectangles silicon solar cell engagement be arrived each other, and these batteries is electrically connected in series.
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 cover Mode is overlapped.This method further includes applying heat and pressure to superbattery, and make that adjacent rectangle silicon solar cell is arranged in Overlapped ends between conductive bonding material solidification, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, And these batteries are electrically connected in series.This method further includes constructing by required solar energy module, by superbattery arrangement and mutual It is linked as the lamination stack with encapsulant, then applies heat and pressure to the lamination stack, to form laminate structures.
Some variations of this method be included in lamination stack apply heat and pressure to form laminate structures before, pass through Heat and pressure are applied to superbattery to be cured or partially cured the conductive bonding material, to form solidification or part admittedly The superbattery of change, as the intermediate products before formation laminate structures.In some variations, when in assembling superbattery When each additional rectangle silicon solar cell is added to superbattery by period, first make newly added solar battery with it is adjacent Overlapping solar battery between electroconductive binder grafting material be cured or partially cured, then by any other rectangular silicon sun Energy battery is added to superbattery.Alternatively, some variations include will be all in superbattery in same step Conductive bonding material is cured or partially cured.
If superbattery is formed partially cured intermediate products, this method may include applying heat to lamination stack While with pressure to form laminate structures, the solidification of conductive bonding material is completed.
It, will while some variations of this method are included in lamination stack application heat and pressure to form laminate structures Conductive bonding material solidification, without forming the superbattery being cured or partially cured as the centre before forming laminate structures Product.
This method may include that one or more standard-sized silicon solar cells are cut into the lesser rectangle shape of area Shape, and the silicon solar cell of rectangle is provided.Electroconductive binder can be connect before cutting one or more silicon solar cells 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 rectangle silicon solar Then electroconductive binder grafting material is just applied to rectangle silicon solar cell by battery.
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-electricity The long side in pond is overlapped and is conductively directly connectcted to each other, so that silicon solar cell is electrically connected in series.Solar panels are also It include: the first hiding tap engagement pad on the back surface of the first solar battery, first solar battery Positioned at the middle position along first superbattery；And conductively it is joined to the of the first hiding tap engagement pad One electrical interconnection.First electrical interconnection includes stress relief feature, the stress relief feature reconcile the electrical interconnection with should The differential thermal expansion between silicon solar cell that electrical interconnection is engaged.Term " the stress used herein in conjunction with interconnection piece Eliminate feature ", can refer to geometrical characteristic, such as kink, ring or slit, can also refer to interconnection piece thickness (for example, very thin) and/ Or the ductility of interconnection piece.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 engagement pad on the back surface of the second solar battery, Second solar battery is located near the first solar battery, and is located at super along second in adjacent superbattery row The middle position of grade battery hides wherein the first hiding tap engagement pad is electrically connected to second by the first electrical interconnection Tap engagement pad.In such cases, the first electrical interconnection can extend across the first superbattery and the second superbattery Between gap, and be conductively joined to the second hiding tap engagement pad.Alternatively, the first hiding tap connects Being electrically connected between touch pad and the second hiding tap engagement pad may include another electrical interconnection, another described electrical interconnection Part is conductively joined to the second hiding tap engagement pad and is electrically connected (for example, conductively engaging) and is electrically interconnected to first Part.Any interconnection scheme all optionally extends through additional superbattery row.For example, any interconnection scheme can all appoint Selection of land extends through the full duration of module, to interconnect the solar battery in every row via hiding tap engagement pad.
Solar energy module can include: the second hiding tap contact on the back surface of the second solar battery Pad, second solar battery are located at another middle 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 battery parallel connection electrical connection.
In any of the above-described kind of variations, the first hiding tap engagement pad, which can be, to be disposed in and first sun Multiple hiding taps contacts on the back surface for the first solar battery in a row that the long axis of energy battery extends in parallel One in pad, wherein the first electrical interconnection is conductively joined to multiple hiding each of contacts, and its along The span of the long axis is substantially equal to the length of the first solar battery.Additionally or alternatively, the first hiding engagement pad It can be the back surface being disposed in the first solar battery in the vertically extending row of the long axis of the first solar battery On multiple hiding tap engagement pads in one.In the latter case, for example, the tap engagement pad that this row hides Position can be adjacent with the short edge of the first solar battery.First hiding engagement pad can be in the first solar battery One be arranged in multiple hiding tap engagement pads of two-dimensional array on back surface.
Alternatively, the position of the first hiding tap engagement pad can be with first in any of the above-described kind of variations The short side of the back surface of solar battery is adjacent, wherein the first electrical interconnection is not along the long axis of the solar battery from institute It states hiding tap engagement pad substantially to extend internally, and the back surface metallization pattern on the first solar battery is institute State interconnection piece and conducting path be provided, the conducting path preferably have less than or equal to about every square 5 ohm of film resistor or The film resistor that 2.5 ohm less than or equal to about every square of person.In such cases, the first interconnection piece may include (for example) setting Set two protruding portions on opposite sides in stress relief feature, one of protruding portion is conductively joined to first and hides 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 be directed at the first hiding tap engagement pad for identification but also ideal with the edge of the first superbattery Ground alignment.
On the other hand, solar energy module includes glass front plate, back plate and multiple superbatteries, the multiple superbattery Two or more parallels are arranged between glass front plate and back plate.Each superbattery includes multiple arrangements that are in line Rectangle or substantial rectangular silicon solar cell, wherein the long side overlapping of adjacent silicon solar cell and not only flexible conduction again It is directly connectcted to each other to property, so that silicon solar cell is electrically connected in series.First flexible electrical interconnection rigidly, conductibility Ground is joined to first superbattery.Flexible conductor between the solar battery of overlapping, which engages, provides machinery for superbattery Plasticity, to reconcile within the temperature range of about -40 DEG C to about 100 DEG C and be parallel to super electricity on the direction that superbattery is arranged Thermal expansion mismatch between pond and glass front plate makes the thermal expansion mismatch be unlikely to damage solar energy module.First superbattery Rigid conductibility between the first flexible electrical interconnection, which engages, forces the first flexible electrical interconnection at about -40 DEG C to about 180 DEG C Within the temperature range of, on the direction that reconciliation is arranged perpendicular to superbattery between the first superbattery and the first flexible electrical interconnection Thermal expansion mismatch 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 battery side in superbattery Conductibility, which is engaged, can utilize different conductive adhesives from the engagement of the conductibility of the solar battery other side.For example, being formed The conductive adhesive of positive engagement between superbattery and flexible electrical interconnection can be solder.In some variations In, the engagement of conductibility between the overlapping solar battery in superbattery be formed with non-solder conductive adhesive, and 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 conductive adhesions Agent can solidify 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 perpendicular to the thickness on solar battery direction Degree may be less than or equal to about 50 microns, and can be greater than or equal to about 1.5W/ perpendicular to the thermal conductivity on solar battery direction (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.
Conductively be joined in first flexible electrical interconnection superbattery part can in it is band-like, formed by copper, And the thickness on the direction on the surface engaged perpendicular to it with solar battery can e.g., less than or equal to about 30 microns, or Person is less than or equal to about 50 microns.First flexible electrical interconnection may include integral type conductibility copper part, the part not with the sun Energy battery engagement, and it is higher compared to the part offer for being conductively joined to solar battery in the first flexible electrical interconnection Conductibility.Thickness of the first flexible electrical interconnection on the direction on the surface engaged perpendicular to it with solar battery is smaller than Or be equal to about 30 microns or less than or equal to about 50 microns, and in the plane locating for solar cell surface, with stream The width on the vertical direction of electric current of the electrical interconnection is crossed greater than or equal to about 10mm.First flexible electrical interconnection transmitable Ground is joined to the conductor that solar battery nearby compares the first electrical interconnection offer more high conductance.
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 adjacent silicon solar The long side of battery is overlapped and is conductively directly connectcted to each other, so that silicon solar cell is electrically connected in series.In normal work The hiding tap engagement pad of non-conducting high current is located on the back surface of the first solar battery when making, first sun Energy battery is located at the middle position along first superbattery in first row superbattery.Hiding tap engagement pad is simultaneously Join at least second solar battery being electrically connected 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 battery.In some variations, the span of the electrical interconnection The not substantially equal to length of the first solar battery, and the back surface metallization pattern on the first solar battery is hiding Tap engagement pad conducting path is provided, which has less than or equal to about every square 5 ohm of film resistor.
Multiple superbatteries can be arranged to three or more parallels, and the span of these parallels is equal to solar energy mould Width of the block on the direction arranged perpendicular to these, and hiding tap engagement pad is electrically connected to each superbattery row In at least one solar battery on hiding engagement pad, thus by all superbattery row electrical connections in parallel.Herein In class variations, solar energy module may include being connected at least one hiding tap engagement pad or being connected to hiding At least one bus of interconnection piece between tap engagement pad connects, and bus connection is filled with bypass diode or other electronics Set connection.
Solar energy module may include following flexible electrical interconnections: the flexibility electrical interconnection is conductively joined to hiding point Junction contacts pad, so that the hiding tap engagement pad is electrically connected to the second solar battery.It is passed in flexible electrical interconnection Be joined to the property led hiding tap engagement pad part can for example in it is band-like, formed by copper, and perpendicular to it Thickness on the direction on the surface engaged with solar battery may be less than or equal to about 50 microns.Hiding tap engagement pad with Conductibility engagement between flexible electrical interconnection can force flexible electrical interconnection to bear the first solar battery and flexible electrical interconnection Thermal expansion mismatch between part, and within the temperature range of about -40 DEG C to about 180 DEG C, reconciles the first solar battery and the The relative motion as caused by thermally expanding between two solar batteries makes the relative motion be unlikely to damage solar energy module.
In some variations, at work, the first hiding engagement pad can conduct more single than any solar energy module The bigger electric current of the electric current generated in solar battery.
Under normal conditions, it is covered on the front surface of the first solar battery above the first hiding tap engagement pad simultaneously It is not occupied by engagement pad or any other interconnection piece feature.Under normal conditions, not by the front surface of the first solar battery Any region of a part overlapping of adjacent solar battery in one superbattery is not all by engagement pad or any other interconnection 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 biggish smooth collecting zone.
On the other hand, solar energy module includes glass front plate, back plate and multiple superbatteries, the multiple superbattery Two or more parallels are arranged between glass front plate and back plate.Each superbattery includes multiple arrangements that are in line Rectangle or substantial rectangular silicon solar cell, wherein the long side overlapping of adjacent silicon solar cell and not only flexible conduction again It is directly connectcted to each other to property, so that silicon solar cell is electrically connected in series.First flexible electrical interconnection rigidly, conductibility Ground is joined to first superbattery.Flexible conductor between the solar battery of overlapping is engaged by the first conductive adhesive It is formed, there is the modulus of shearing less than or equal to about 800 megapascal.Between first superbattery and the first flexible electrical interconnection Rigid conductibility engagement is formed by the second conductive adhesive, has the modulus of shearing greater than or equal to about 2000 megapascal.
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 solidify in same procedure of processing.
In some variations, the conductibility between the adjacent solar battery of overlapping is bonded on perpendicular to solar-electricity Thickness on the direction of pond is greater than or equal to less than or equal to about 50 microns perpendicular to the thermal conductivity on solar battery direction 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 solar of substantial rectangular Battery, these silicon solar cells are arranged to multiple superbatteries in two or more parallels.It is each super 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 conducting It is joined to each other to property, so that silicon solar cell is electrically connected in series.Superbattery electrical connection, is greater than or equal to for providing About 90 volts of High Level DC Voltage.
In a kind of variations, solar energy module includes one or more flexible electrical interconnections, the flexible electrical interconnection Part is arranged to for 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 the inversion for High Level DC Voltage to be transformed into alternating voltage Device.Module level power electronic device can sense High Level DC Voltage, and solar energy can be operated at optimum current-voltage power point Module.
In another variations, solar energy module includes being electrically connected to each mould to adjacent serial connected super battery row Block grade 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 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 a pair of of superbattery row both ends, and can grasp at optimum current-voltage power point Make each individually a pair of of superbattery row.Optionally, if individually the voltage at a pair of superbattery row both ends is lower than threshold value, 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 level for being electrically connected to each individual superbattery row Power electronic device is arranged for being electrically connected in series two or more superbatteries to provide High Level DC Voltage, the module level function Rate electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.Optionally, module level power electronic device Part can sense the voltage at each individual superbattery row both ends, and can operate at optimum current-voltage power point each Individual superbattery row.Optionally, if individually the voltage at superbattery row both ends is lower than threshold value, module level power electricity Sub- 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 function for being electrically connected to each individual superbattery Rate electronic device, for being electrically connected in series two or more superbatteries to provide High Level DC Voltage, the module level power is electric Sub- device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.Optionally, module level power electronic device can The voltage at each individually superbattery both ends of sensing, and can be operated at optimum current-voltage power point each individual Superbattery.Optionally, if individually the voltage at superbattery both ends is lower than threshold value, module level power electronic device can be incited somebody to action This individual superbattery is disconnected from the circuit for providing High Level DC Voltage.
In another variations, the tap electricity that each superbattery in module is hidden is segmented into multiple points Section.Solar energy module includes the module level power that each segmentation in each superbattery is electrically connected to by hiding tap 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 Including the inverter for High Level DC Voltage to be transformed into alternating voltage.Optionally, module level power electronic device can sense often The voltage at the individual segmentation both ends of each of a superbattery, and can be operated at optimum current-voltage power point each Individually segmentation.Optionally, if individually the voltage at segmentation both ends is lower than threshold value, module level power electronic device can be by this A individual segmentation is disconnected from the circuit for providing High Level DC Voltage.
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 greater 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 greater than Or be 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 two or more silicon solar cells being arranged in the module that are in line, wherein adjacent The long side of silicon solar cell is overlapped and is conductively joined to each other, so that silicon solar cell is electrically connected in series.Each Superbattery electrical connection in module, for making module provide the high-voltage direct-current output greater than or equal to about 90 volts.Inverter Two or more solar energy modules are electrically connected to, so that the high-voltage direct-current output of these modules is transformed into alternating current.
Each solar energy module may comprise one or more flexible electrical interconnections, and the flexibility electrical interconnection is arranged use It is electrically connected in series in by the superbattery in solar energy module, 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 the multiple superbatteries being located in two or more parallels.Each superbattery in third solar energy module wraps Two or more silicon solar cells for being in line and being arranged in the module are included, wherein the long side of adjacent silicon solar cell It is overlapped and is conductively joined to each other, so that silicon solar cell is electrically connected in series.It is super in third solar energy module Grade battery electrical connection, for making module provide the high-voltage direct-current output greater than or equal to about 90 volts.
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 and the in two or more solar energy modules for being electrically connected of parallel connection At least the 4th solar energy module that two solar energy modules are electrically connected in series.4th solar energy module may include quantity N ' ' Greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, these silicon solar cells, which are arranged to, to be located at Multiple superbatteries in two or more parallels.Each superbattery in 4th solar energy module includes into straight Line is arranged in two or more silicon solar cells in the module, wherein adjacent silicon solar cell long side overlapping and It is conductively joined to each other, so that silicon solar cell is electrically connected in series.Superbattery in 4th solar energy module Electrical connection, 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 quilt Arrange for prevent because any one solar energy module occur short circuit due to dissipate other solar energy modules generation power.
The solar energy photovoltaic system may include positive bus and negative bus, two or more solar energy module parallel connections are electrically connected 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 can wrap Header box is included, two or more solar energy modules are electrically connected to the header box by individual conductor.The header box is by the sun Can wired in parallel electrical connection, and optionally 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 inverter can be configured in the direct current pressing operation solar energy module for being higher than minimum value, the minimum 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 keep away Exempt from the electric pressing operation solar energy module for reverse-biased occur.
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, it is big In or be 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', The value of N ' ' can be identical, can also be different.
In any of the above-described kind of variations, High Level DC Voltage provided by solar energy module 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 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 include be in line arrangement multiple silicon too Positive energy battery, wherein the long side of adjacent silicon solar cell is overlapped and is conductively joined to each other, thus by silicon solar Battery is electrically connected in series.The system also includes inverters.The inverter can be (for example) with first solar energy module collection At micro- inverter.Superbattery electrical connection in first solar energy module, for the Gao Zhi above or equal to about 90 volts Galvanic electricity pressure is supplied to inverter, and direct current is transformed into alternating current again by inverter.
First solar energy module may include one or more flexible electrical interconnections, and the flexibility electrical interconnection is arranged use It is electrically connected in series in by the superbattery in solar energy module, 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 two or more silicon solars electricity being arranged in the module that is in line 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 providing module greater than or equal to about 90 volts High-voltage direct-current output.
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 greater than Or be 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 can also be different.
In any of the above-described kind of variations, High Level DC Voltage provided by solar energy module 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 includes quantity N greater than or equal to about 250 rectangles or the silicon sun of substantial rectangular Energy battery, these silicon solar cells are arranged to multiple serial connected super batteries in two or more parallels.Often A superbattery all includes the multiple silicon solar cells of arrangement of being in line, wherein the long side of adjacent silicon solar cell is overlapped And be conductively directly connectcted to each other by not only conductive but also thermally conductive adhesive, thus by the silicon solar cell in superbattery It is electrically connected in series.In solar energy module, the bypass diode that every 25 solar batteries include is less than one.Not only conductive but also thermally conductive Adhesive engagement is formed between adjacent solar battery, these are bonded on small perpendicular to the thickness on solar battery direction In or be equal to about 50 microns, and perpendicular to the thermal conductivity on solar battery 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 can It is sandwiched between glass front plate and back glass.
In solar energy module, such as: the bypass diode that every 30 solar batteries include can be less than one, and every 50 are too The bypass diode that the bypass diode that positive energy battery includes can be less than one or every 100 solar batteries include can lack In one.Solar energy module can (for example) not include bypass diode, only include single bypass diode including no more than three Bypass diode including it is no more than six bypass diodes, or includes no more than ten bypass diodes.
Conductibility engagement between the solar battery of overlapping optionally provides mechanical plasticity for superbattery, thus Within the temperature range of about -40 DEG C to about 100 DEG C, reconciles and be parallel to superbattery and glass front plate on the direction that superbattery is arranged Between thermal expansion mismatch, make 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 greater 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 greater 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 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, be greater 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 Pressure.
The solar energy module and inverter that solar energy system may include any of the above-described kind of variations are (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 being higher than The direct current pressing operation solar energy module of minimum value, the minimum value are configured to avoid solar battery reverse-biased.Minimum electricity Pressure value may depend on temperature.The inverter can be configured for identification reverse-biased, and in the electricity for avoiding the occurrence of reverse-biased Pressing operation solar energy module.For example, the inverter can be configured for the voltage-to-current power curve in solar energy module Local maxima region in operate solar energy module, to avoid there is reverse-biased.
Subject description discloses the cutting methods of the cutting tool of solar battery and solar battery.
On the one hand, the method for manufacturing solar battery includes: to promote solar cell wafer along curved surface, is then existed Apply vacuum between curved surface and the bottom surface of solar cell wafer, so that solar cell wafer is against curved surface Bending, to cut solar cell wafer along one or more previous ready quarter line drawing, thus from solar-electricity Multiple solar batteries are partitioned into the chip of pond.Solar cell wafer for example can be promoted continuously along curved surface.As replacing Generation, solar cell wafer repeatedly can discretely be promoted along curved surface.
The curved surface can be the vacuum manifold for (for example) applying vacuum to the bottom surface of solar cell wafer Upper surface bending part.Vacuum manifold can be along solar-electricity to the vacuum that the bottom surface of solar cell wafer applies The direction of travel of pond chip and change, and can be cut in proper order for example in vacuum manifold in the region of solar cell wafer Reach maximum intensity.
This method may include transmitting solar cell wafer along the curved upper surface of vacuum manifold using porous belts, herein The bottom surface of solar cell wafer is applied vacuum to by the perforation on porous belts in the process.The perforation is optionally Be arranged on porous belts so that solar cell wafer must be covered on along the leading edge and rear of itself direction of travel it is porous At least one perforation of band above, thus is pulled towards curved surface by vacuum, but this is not required.
This method can include: promote solar cell wafer along the flat site of the upper surface of vacuum manifold, reach true Transition in empty manifold upper surface with first curvature is bent region；Then solar cell wafer is advanced on vacuum manifold In the cutting region for cutting solar cell wafer in surface in proper order, the cutting region of vacuum manifold has torsion, the Two curvature are received tighter than first curvature.This method, which may also include for the solar battery of cutting to be advanced in vacuum manifold, to be had The cutting rear region of 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 of line drawing is carved at every, the other end that line drawing is then carved at every applies stronger vacuum, so as to along every quarter line drawing Asymmetric stress distribution is provided, forms the core of single cutting crackle to help to carve line drawing along every, and facilitate Single cutting crackle is spread along every quarter line drawing.Additionally or alternatively, in any of the above-described kind of variations, this method can It is at an angle with vacuum manifold including being orientated to the quarter line drawing in solar cell wafer so that for every quarter line drawing, One end more early reaches 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 the EDGE CONTACT bending table in the solar battery of cutting Before face, just the solar battery of cutting is removed from curved surface.For example, this method may include in the bending table with manifold Face is tangent or approximate tangent direction on, battery is removed with the big speed of the speed advanced than battery along manifold.This can be used Such as the movement of arranged tangential brings completion, or is completed with any other suitable mechanism.
In any of the above-described kind of variations, this method may include that a plurality of quarter line drawing is marked 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, later Solar cell wafer is cut along line drawing is carved.At this point, the solar battery of each obtained cutting can be along its top Or some electroconductive binder grafting material is arranged in the cut edge of bottom surface.Electroconductive binder can applied by carving line drawing It is formed before or after grafting material using any suitable quarter method of drawing.Carving line drawing can for example be formed by the laser incising method of drawing.
In any of the above-described kind of variations, solar cell wafer can be the silicon solar of square or dead square Battery wafer.
On the other hand, the method for making solar battery string includes: that the solar battery of multiple rectangles is in line arrangement, It is overlapped the long side of adjacent rectangle solar battery in a manner of covering, is arranged between electroconductive binder grafting material；Then make Conductive bonding material solidification, thus by adjacent overlapping rectangles solar battery engagement to each other, and by these battery series electricals Connection.Solar battery can be manufactured for example by above-mentioned for manufacturing any variations of the method for solar battery.
On the one hand, the method for making solar battery string includes: every in one or more square solar batteries Rear surface metallization pattern is formed on a battery, then uses single template, before inciting somebody to action completely in single stencilization step In surface metalation pattern stencilization to each battery in one or more square solar batteries.These steps can press Random order executes, and if applicable, can also be performed simultaneously.So-called " complete front surface metallization pattern ", means It, can be complete in the front surface it is not necessary that additional metallization material to be deposited to square solar battery after stencilization step It metallizes at front surface.This method further include: each square solar battery is divided into two or more rectangle solar energy Battery, to form multiple rectangle solar batteries, each rectangle solar-electricity with one or more square solar batteries Pond all has rear surface metallization pattern and complete front surface metallization pattern；Multiple rectangle solar batteries are in line cloth It sets, is overlapped the long side of adjacent rectangle solar battery in a manner of covering；Then the overlapping rectangles sun that every a pair is adjacent Rectangle solar battery in energy battery is conductively joined to each other, and conductive bonding material is allowed to be arranged in the two rectangle sun It is right for this to be electrically connected to this to the front surface metallization pattern of a battery in rectangle solar battery between energy battery The rear surface metallization pattern of another battery in rectangle solar battery, thus by the multiple rectangle solar battery string Connection electrical connection.
Template can be configured so that in template for limiting the front surface on one or more square solar batteries All parts of the one or more features of metallization pattern be all limited to during stencilization in the template be located at template The physical connection of other parts in locating plane.
Front surface metallization pattern on each rectangle solar battery can be for example including perpendicular to rectangle solar battery Long side orientation multiple finger-shaped materials, but front surface metallization pattern does not make the finger-shaped material in front surface metallization pattern each other Physical connection.
Subject description discloses at solar battery edge carrier recombination losses mitigate solar battery, it is this too Positive energy battery is for example without the cut edge for promoting Carrier recombination；Method for manufacturing such solar battery；And It is arranged by stacking (overlapping) and forms superbattery using such solar battery.
On the one hand, the method for manufacturing multiple solar batteries includes: to deposit to one or more front surface amorphous silicon layers 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 Or multiple front surface amorphous silicon layers top and front surface groove in；By one or more rear surface amorphous silicon layer patterns, To form one or more rear surface grooves in one or more rear surface amorphous silicon layers；Then rear surface passivation layer is sunk In product to the top of one or more rear surface amorphous silicon layers and rear surface groove.It is every in one or more rear surface grooves A groove be all formed with a corresponding front surface groove in line.This method further includes flat in one or more cutting The crystal silicon wafer is cut at face, each cutting planes are in the different corresponding front surface grooves of a pair and rear surface groove It is upper placed in the middle or substantially placed in the middle.At work, front surface amorphous silicon layer will be irradiated by light obtained solar battery.
In some variations, front surface groove is only formed, without forming rear surface groove.In other modification shapes In formula, rear surface groove is only formed, without forming front surface groove.
This method can include: form one or more front surface grooves, reach crystal for penetrating front surface amorphous silicon layer The front surface of silicon wafer, and/or one or more rear surface grooves are formed, for penetrating one or more rear surface amorphous The rear surface of silicon layer arrival 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 use in proper order Continuous-wave laser and cooling nozzles cause high compression and stretch thermal stress, and guide the cutting in crystal silicon wafer completely climing Prolong, to cut crystal silicon wafer in the punishment of one or more cutting planes.Alternatively, can be at one or more cutting planes With machine cuts crystal silicon wafer.Any suitable cutting method can be used.
One or more front surface amorphous silicon layer/crystal silicon layers can form n-p knot 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 silicons Layer/crystal silicon layer can form n-p knot with crystal silicon wafer, in this case, it is possible to preferably before crystal silicon wafer Surface side is cut.
On the other hand, the method for manufacturing multiple solar batteries includes: to form one 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 silicons Layer deposits on the second surface of crystal silicon wafer, and the second surface is located at the opposite side of the first surface of crystal silicon wafer； Then the crystal silicon wafer is cut at one or more cutting planes, each cutting planes are in one or more of ditches It is placed in the middle or substantially placed in the middle on a different groove in slot.
This method may include forming passivation layer with transparent conductive oxide.
Laser can be used to cause thermal stress in crystal silicon wafer, thus by crystal at one or more cutting planes Silicon wafer cutting.Alternatively, can be at one or more cutting planes with machine cuts crystal silicon wafer.It can be used any suitable Suitable cutting method.
One or more front surface amorphous silicon layer/crystal silicon layers can form n-p knot 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 battery, wherein the end of adjacent solar battery is overlapped in a manner of covering and is conductively joined to each other, thus will Solar battery is electrically connected in series.Each solar battery includes: crystalline silicon substrate；One or more first surface amorphous silicons Layer, is arranged on the first surface of crystalline silicon substrate to form n-p junction；One or more second surface amorphous silicon layers, set It sets 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 Passivation layer, it is multiple that carrier occurs in the edge of the edge or second surface amorphous silicon layer that prevent first surface amorphous silicon layer It closes, or had not only prevented the edge of first surface amorphous silicon layer but also prevented the edge of second surface amorphous silicon layer from carrier occur It is compound.Passivation layer may include transparent conductive oxide.
Solar battery 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 description in more detail below of the invention, these and other embodiments of the invention, Feature and advantage will become clearer to those skilled in the art, first below DESCRIPTION OF DRAWINGSFigure.
Detailed description of the invention
Fig. 1 shows the cross-sectional view of a string of solar batteries arranged, be connected in series in a manner of stacking, wherein phase The end of adjacent solar battery is overlapped, to form stacking formula superbattery.
Fig. 2A is shown before the exemplary rectangular solar battery 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 battery.
Fig. 2 D and Fig. 2 E show solar battery shown in Fig. 2A rear surface and illustrative rear surface metallization pattern Schematic diagram.
Fig. 2 F and Fig. 2 G respectively illustrate the rear surface and illustratively rear table of Fig. 2 B and solar battery shown in fig. 2 C The schematic diagram of face metallization pattern.
Fig. 2 H show another exemplary rectangular solar battery that can be used to form stacking formula superbattery before (to Positive side) surface and front surface metallization pattern schematic diagram.Front surface metallization pattern includes discrete engagement pad, each contact Pad is all surround by barrier, and the barrier is configured to prevent the uncured conductive adhesive engagement being deposited in its engagement pad Material flows far from engagement pad.
Fig. 2 I shows the viewgraph of cross-section of the solar battery of Fig. 2 H, and identifies the thin of front surface metallization pattern Section, which shows in the two expanded views of Fig. 2 J and Fig. 2 K, including engagement pad and around engagement pad barrier it is multiple Part.
Fig. 2 J shows the expanded view of the details in Fig. 2 I.
Fig. 2 K shows the expanded view of the details in Fig. 2 I, wherein uncured conductive adhesive grafting material is by barrier It is substantially restricted to the position of discrete engagement pad.
Fig. 2 L shows the rear surface of the solar battery of Fig. 2 H and the schematic diagram of illustrative rear surface metallization pattern. Rear surface metallization pattern includes discrete engagement pad, and each engagement pad is surround by barrier, and the barrier is configured to prevent The uncured conductive adhesive grafting material being only deposited in its engagement pad flows far from engagement pad.
Fig. 2 M shows the viewgraph of cross-section of the solar battery of Fig. 2 L, and identifies the thin of rear surface metallization pattern Section, the details are shown in this expanded view of Fig. 2 N, the multiple portions of the barrier including engagement pad and around engagement pad.
Fig. 2 N shows the expanded view of the details in Fig. 2 M.
Fig. 2 O shows another variations of the metallization pattern including barrier, and the barrier is configured to prevent Uncured conductive adhesive grafting material flows far from engagement pad.Barrier abuts the side of engagement pad, and compares engagement pad It is high.
Fig. 2 P shows another variations of the metallization pattern of Fig. 2 O, and wherein barrier abuts at least the two of engagement pad Side.
Fig. 2 Q show another exemplary rectangular solar battery rear surface and illustrative rear surface metallization figure The schematic diagram of case.Rear surface metallization pattern includes substantially extending solar battery long side along the edge of solar battery Length continuously contacts with pad.Engagement pad is surround by barrier, and the barrier is configured to prevent deposition over contact pads not solid Change conductive adhesive grafting material and flows far from engagement pad.
Fig. 2 R show another exemplary rectangular solar battery that can be used to form stacking formula superbattery before (to Positive side) surface and front surface metallization pattern schematic diagram.Front surface metallization pattern includes the edge along solar battery It arranges discrete engagement pad in a row, and on the inside of this row's engagement pad and is parallel to this elongated leading for arranging engagement pad extension Line.Elongate lead forms 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 and then flows on the effective coverage of solar battery.
Fig. 3 A shows the schematic diagram of illustrative methods, can be by the dead square silicon of standard shape size using this method Solar battery is divided into the different rectangle of two length that (for example, be cut into or resolve into) can be used to form stacking formula superbattery Solar battery.
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 battery.Fig. 3 B show chip front surface and illustrative front surface metallization pattern. Fig. 3 C show chip rear surface 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 battery.Fig. 3 D show chip front surface and illustrative front surface metallization pattern.Fig. 3 E is shown The rear surface of chip and illustrative rear surface metallization pattern.
Fig. 4 A shows the partial view of the front surface of exemplary rectangular superbattery, which includes such as example Rectangle solar battery as shown in Figure 2 A, the stacking mode of these rectangle solar batteries 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 rectangle superbattery Including, with " V word " rectangle solar battery of chamfering, these rectangle solar batteries are as shown in Figure 1 as shown in such as Fig. 2 B Stacking mode arrange.
Fig. 5 A shows the schematic diagram of the exemplary rectangular solar energy module including multiple stacking formula rectangle superbatteries, In the length of each superbattery long side be approximately equal to the half of solar energy module bond length.Pairs of superbattery is end-to-end It arranges and is formed multiple rows of, wherein the long side of superbattery is parallel to the short side of module.
Fig. 5 B shows 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 shows 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 shows the schematic diagram of the exemplary rectangular solar energy module including multiple stacking formula rectangle superbatteries, In the length of each superbattery long side be approximately equal to the half of solar energy module long side length.Pairs of superbattery is end-to-end It arranges and is formed multiple rows of, wherein the long side of superbattery is parallel to the long side of module.
Fig. 5 E shows the schematic diagram for being configured similarly to another exemplary rectangular solar energy module of Fig. 5 C, wherein being formed All solar batteries of superbattery are all the V word solar batteries with chamfering, the chamfering with it is sunny from its segmentation The turning of the pseudo-square wafers of energy battery is corresponding.
Fig. 5 F shows the schematic diagram for being configured similarly to another exemplary rectangular solar energy module of Fig. 5 C, wherein being formed The solar battery of superbattery includes the mixture of V word solar battery and rectangle solar battery, these solar batteries It is arranged to the shape reappeared and be partitioned into the pseudo-square wafers of these solar batteries from it.
Fig. 5 G shows the schematic diagram for being configured similarly to another exemplary rectangular solar energy module of Fig. 5 E, only surpasses Adjacent V word solar battery in grade battery is arranged to mutual mirror image, so the edge length that they are overlapped is equal.
Fig. 6 shows the exemplary arrangement with three row's superbatteries of flexible electrical interconnection interconnection, and this arrangement is used for will Superbattery in every 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 rows in block.
Fig. 7 A shows the example flexible interconnection piece that can be used in series or in parallel interconnect superbattery.It is some Patterning is presented in example, these patternings are along exemplary long axis, short axle, or not only along exemplary long axis but also along exemplary short Axis increases exemplary flexible (mechanical plasticity).Fig. 7 A shows the long interconnection piece construction of illustrative stress elimination, these constructions It can be not only used for being connected in the tap hiding as described herein of superbattery, it is also possible to before being connected to superbattery The interconnection piece of terminal contact on surface or rear surface.Fig. 7 B-1 and Fig. 7 B-2 show plane external carbuncle and eliminate showing for feature Example.Fig. 7 B-1 and Fig. 7 B-2 show illustrative long interconnection piece construction, which includes that plane external carbuncle eliminates feature, both may be used For being connected in the hiding tap of superbattery, it is also possible to be connected in the front surface or rear surface of superbattery The interconnection piece of terminal contact.
Fig. 8 A shows 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 illustrates 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 shows 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 illustrates 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 shows 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 illustrates 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 is shown in one end of row's superbattery, the edge join of neighbouring solar energy module to super electricity The additional example of the electrical interconnection of the front terminal contact in pond.These exemplary interconnection pieces are configured in the front surface of module only Occupy the area of very little.
Fig. 9 A shows 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.The welding being electrically connected by passing through insertion module laminate structures between superbattery and bypass diode is come real It is existing.
Fig. 9 B shows 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 shows the exemplary double-sided glass rectangle solar energy module that formula rectangle superbattery is covered including six, In the length of each superbattery long side be approximately equal to the length of solar energy module long side.Superbattery, which is arranged to, to be connected in parallel to each other Six rows of electrical connection.Two terminal boxes are mounted in the opposite edges of module, to maximize the effective area of module.
Fig. 9 D shows the side view of solar energy module shown in Fig. 9 C.
Fig. 9 E shows the exemplary solar energy module of another kind that formula rectangle superbattery is covered including six, wherein each The length of superbattery long side is approximately equal to the length of solar energy module long side.Superbattery is arranged to six rows, three pairs of batteries Arrange the electric power controller being connected respectively on solar energy module.
Fig. 9 F shows the exemplary solar energy module of another kind that formula rectangle superbattery is covered including six, wherein each The length of superbattery long side is approximately equal to the length of solar energy module long side.Superbattery is arranged to six rows, and each row is each From the electric power controller being connected on solar energy module.
Fig. 9 G and Fig. 9 H show other implementations that the framework of module level power management is carried out using stacking formula superbattery Example.
Figure 10 A shows 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 each of the solar energy module as shown in Figure 5 B of the circuit diagram with Figure 10 A The example physical layout that kind is electrically interconnected.
Figure 11 A shows the exemplary circuit schematic diagram of solar energy module as shown in Figure 5A.
Figure 11 B-1 and Figure 11 B-2 show each of the solar energy module as shown in Figure 5A of the circuit diagram with Figure 11 A The example physical layout that kind is electrically interconnected.
Figure 11 C-1 and Figure 11 C-2 show each of the solar energy module as shown in Figure 5A of the circuit diagram with Figure 11 A Another example physical layout that kind is electrically interconnected.
Figure 12 A shows another exemplary circuit schematic diagram of solar energy module as shown in Figure 5A.
Figure 12 B-1 and Figure 12 B-2 show each of the solar energy module as shown in Figure 5A of the circuit diagram with Figure 12 A The example physical layout that kind is electrically interconnected.
Figure 12 C-1, Figure 12 C-2 and Figure 12 C-3 show the solar energy as shown in Figure 5A of the circuit diagram with Figure 12 A Another example physical layout of the various electrical interconnections of module.
Figure 13 A shows another exemplary circuit schematic diagram of solar energy module as shown in Figure 5A.
Figure 13 B shows 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 each of the solar energy module as shown in Figure 5A of the circuit diagram with Figure 13 A The example physical layout that kind is electrically interconnected.After the physical layout of Figure 13 C-1 and Figure 13 C-2 are slightly modified, it is suitable for that there is figure The solar energy module as shown in Figure 5 B of the circuit diagram of 13B.
Figure 14 A shows 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 half of solar energy module bond length.Pairs of super electricity The end-to-end arrangement in pond and formed multiple rows of, wherein the long side of superbattery is parallel to the short side of module.
Figure 14 B shows 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 another of the various electrical interconnections of the solar energy module as shown in Figure 5 B of the circuit diagram with Figure 10 A A kind of 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 production solar energy module.
Figure 18 shows the flow chart of another illustrative methods using superbattery production solar energy module.
Figure 19 A to Figure 19 D, which is shown, can make the cured exemplary arrangement of superbattery using heat and pressure.
Figure 20 A to Figure 20 C, which is schematically shown, can be used to cut the example devices for carving the solar battery drawn.This sets It is standby be used to cut be coated with conductive adhesive grafting material may be particularly advantageous when drawing superbattery at quarter.
Figure 21 shows the representative white back plate that added " zebra stripes " with concealed wire, which can include parallel It is used in the solar energy module of superbattery row, to mitigate in superbattery and back plate from the visible multiple portions in the front of module Between visual contrast.
Figure 22 A shows plan view when being in hot spot state using the conventional modules of conventional band connection.Figure 22 B is shown Plan view when hot spot state is also at using the module according to the thermal diffusion methods of multiple embodiments.
Figure 23 A to Figure 23 B shows the example of the layout of the superbattery string with chamfering battery.
Figure 24 to Figure 25 shows the simplification viewgraph of cross-section 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, shows stacking formula superbattery in figure Before terminal box on terminal electric contact to rear side on (day side) surface exemplary electrical interconnection.
Figure 27 shows the schematic diagram on rear (in the shade side) surface of solar energy module, and two in parallel or more are shown in figure The exemplary electrical of multiple stacking formula superbatteries interconnects, wherein the terminal electric contact connection before superbattery on (day side) surface To each other, and it 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, and two in parallel or more are shown in figure Another exemplary electrical of multiple stacking formula superbatteries interconnects, wherein the terminal electricity touching before superbattery on (day side) surface Point 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 use is shown in figure and is clipped in adjacent super electricity Superbattery is electrically connected in series and electrical connection is supplied to terminal box by the flexible interconnection between the overlapped ends in pond.Figure 29A shows the enlarged view of area of interest in Figure 29.
Figure 30 A shows electrical interconnection and is joined to the exemplary super of its front surface terminal contact and rear surface terminal contact Battery.Figure 30 B shows superbattery shown in two Figure 30 A of interconnected in parallel.
Figure 31 A to Figure 31 C, which is 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 and interconnection piece, and wherein interconnection piece about prolongs Stretch the full duration of superbattery.
Figure 34 A to Figure 34 C shows the rear surface (Figure 34 A) and front surface (Figure 34 B to Figure 34 C) for being joined to superbattery On terminal contact interconnection piece example.
Figure 35 to Figure 36 shows the example for being used together hiding tap and short interconnection piece, wherein short interconnection piece across The gap between adjacent superbattery is crossed, is not extended internally substantially along the long axis of rectangle solar battery but.
Figure 37 A-1 to Figure 37 F-3 shows the short interconnection piece of hiding tap including plane stress elimination feature Representative configuration.
Figure 38 A-1 to Figure 38 B-2 shows 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 representative configuration of the short interconnection piece of hiding tap including alignment characteristics. 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 shows 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 perpendicular to 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 is used in combination with the bypass diode of insertion it is other too Positive energy battery module layout.
Figure 49 A to Figure 49 B respectively illustrate solar energy module for customary DC voltage to be supplied to micro- inverter and As described herein for High Level DC Voltage to be supplied to the block diagram of the high voltage solar energy module of micro- inverter.
Figure 50 A to Figure 50 B, which is shown, assembles the exemplary object of the exemplary high voltage solar energy module of bypass diode Removing the work office and electrical schematic diagram.
Figure 51 A to Figure 55 B shows the high voltage solar energy module including covering formula superbattery and carries out module level power The exemplary architecture of management.
Figure 56 shows the exemplary arrangement of six superbatteries in six parallels, and wherein the end of adjacent row is staggered And by flexible electrical interconnection interconnected in series.
Figure 57 A schematically shows 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 shows the figure being deployed on roof Photovoltaic system shown in 57A.
Figure 58 A to Figure 58 D shows the arrangement of current-limting fuse and blocking diode, wherein current-limting fuse and blocking diode It can be used to prevent High Level DC Voltage from covering the short circuit of formula solar cell module, to avoid due to this short circuit and the module that dissipates 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 shows two or more High Level DC Voltages and covers 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 illustrates 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 and do not 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 shows the example that each superbattery about utilizes the solar energy module of 1 bypass diode.Figure 61 C shows The example of the solar energy module of the bypass diode using nested type construction is gone out.Figure 61 B is 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 shows the side view and top view of another exemplary cutting tool.
Figure 63 A, which is schematically shown, arranges that control is drawn along quarter in cut crystal using illustratively asymmetric vacuum Line forms the core of crackle and controls crackle to be spread along line drawing is carved.Figure 63 B is schematically shown using illustrative symmetrical true Sky arrangement, the arrangement compared to Figure 63 A provide lesser control to cutting.
Figure 64 schematically shows the exemplary hollow manifold 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 used in the cutting tool of Figure 62 A to Figure 62 B Side view.
Figure 67 schematically shows the cutting sun above the exemplary arrangement for being covered on porous belts and vacuum manifold It can battery.
Figure 68 schematically show cut solar battery and standard size chip (during exemplary cut from Its cut solar battery) on non-cut portion relative position and relative orientation.
Figure 69 A to Figure 69 G is schematically shown can continuously remove the equipment for having cut solar battery from cutting tool And method.
Figure 70 A to Figure 70 C provides 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 is 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 battery.
Figure 77 A to Figure 77 B shows the exemplary rear surface metallization pattern on rectangle solar battery.
Figure 78 shows the exemplary front surface metallization pattern on square solar battery, the square solar energy Battery can be cut into multiple rectangle solar batteries, and each rectangle solar battery has front surface shown in Figure 76 golden Categoryization pattern.
Figure 79 shows the exemplary rear surface metallization pattern on square solar battery, the square solar energy Battery can be cut into multiple rectangle solar batteries, and each rectangle solar battery has rear surface shown in Figure 77 A golden Categoryization pattern.
Figure 80 is the schematic diagram of the HIT solar battery of stock size, which utilizes conventional cutting method quilt It is cut into fillet solar battery, to generate the cut edge for promoting Carrier recombination.
Figure 81 A to Figure 81 J, which schematically shows for the HIT solar battery of stock size to be cut into, lacks promotion load Step in the illustrative methods of the fillet solar battery of the compound cut edge of stream.
Figure 82 A to Figure 82 J, which schematically shows for the HIT solar battery of stock size to be cut into, lacks promotion load Step in another illustrative methods of the fillet solar battery of the compound cut edge of stream.
Specific embodiment
Following specific embodiments 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 model of the invention It encloses.Specific embodiment shows the principle of the present invention in a manner of illustrating and is infinite.The specific embodiment describes this Several embodiments of invention, several reorganization form, variations, alternative solution and purposes, including it is presently believed that be to implement Optimal mode of the invention；Those skilled in the art read after the specific embodiment, it will be clear that understand using the present invention The technology method that manufactures solar cell module of the invention.
Unless context clearly otherwise dictates, otherwise singular used in this specification and appended claims "one", "an" and "the", all include multiple referring to thing.In addition, term " parallel " is used to refer to " parallel or substantial parallel ", Cover the minor deviations with parallel geometry, and does not require that any parallel arrangement as described herein and be all substantially parallel. Term " vertical " is used to refer to " vertical or substantially perpendicular ", covers the minor deviations with perpendicular geometry, and does not require that this Any be arranged vertically all is completely vertical described in text.Term " square " is used to refer to " square or substantial square ", Cover the minor deviations with square, such as the substantial square with chamfering (such as radiused corners or other truncated corners) Shape.Term " rectangle " is used to refer to " rectangle or substantial rectangular ", covers the minor deviations with rectangle, such as (such as with chamfering 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 arrangements, and can be Front surface metallization pattern, rear surface metallization pattern and the interconnection piece of solar battery used in such arrangement.This explanation Book also discloses the method for manufacturing such solar energy module.Solar cell module can under " sun " (non-concentrating) irradiation It is advantageously used, physical size and electrical specification can substitute conventional silicon solar cell module.
Fig. 1 shows the viewgraph of cross-section of a string of solar batteries 10 of series connection, these solar batteries are to cover Mode arranges and is electrically connected to form superbattery 100, and wherein the end of adjacent solar battery is overlapped.Each solar battery 10 It all include semiconductor diode structure and the electric contact for being connected to semiconductor diode structure, when solar battery 10 is irradiated by light The electric current wherein generated can be supplied to external loading by these electric contacts.
In the example of this specification description, each solar battery 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 are The opposite sides of n-p junction provides electric contact.However, can be used be utilized any other suitable material system, diode structure, Any other suitable solar battery of physical size or electric contact arrangement, to substitute solar energy mould described in this specification Solar battery 10 in block, or the supplement as the solar battery.For example, preceding (day side) surface metalation pattern can It is arranged on the conductive semiconductor layer of p-type, rear (in the shade side) surface metalation pattern may be provided at the conductive semiconductor of N-shaped On layer.
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 by the front surface metal of a solar battery Change the rear surface metallization pattern that pattern is electrically connected to adjacent solar battery.Suitable conductive bonding material may include for example leading Electric adhesive, electrically conductive adhesive film and strip of conductive adhesive and general solder.Preferably, conductive bonding material it is adjacent too Mechanical plasticity is provided in engagement between positive energy battery, thus thermal expansion coefficient (CTE) of the reconciliation due to conductive bonding material Stress caused by CTE (for example, CTE of silicon) mismatch with solar battery.To provide this mechanical plasticity, in some changes In type form, conductive bonding material is selected as with the glass transition temperature less than or equal to about 0 DEG C.To further decrease simultaneously Reconciliation is parallel to the stress of the overlapping edge of solar battery because of caused by CTE mismatch, optionally only by conductive bond material Material is applied in multiple discrete positions of the overlapping region along solar battery, extends solar battery at substantial without applying The continuous lines of the length at edge.
Front surface and rear surface measurement perpendicular to solar battery, by conductive bonding material in adjacent overlapping solar energy The thickness of the conductive bond formed between battery can for example, less than about 0.1mm.Engagement thin in this way reduces between battery at interconnection Resistive loss, the heat that also any hot spot for being wherein likely to occur issues during the work of promotion superbattery is along superbattery Flowing.The thermal conductivity of engagement between solar battery can be greater than or be equal to about 1.5W/ (m-K).
Fig. 2A shows the front surface of the exemplary rectangular solar battery 10 used in superbattery 100.If Properly, it is possible to use the solar battery 10 of other shapes.In the example shown in the series of figures, the front surface metallization of solar battery 10 Pattern includes bus 15 and finger-shaped material 20, and bus 15 is arranged adjacent to the edge of a long side of solar battery 10, and parallel Substantially extend 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 parallel Substantially extend the length of short side in the short side of solar battery 10.
In the example of Fig. 2A, solar battery 10 is about 156mm, wide about 26mm, therefore length-width ratio (bond length/length Edge lengths) it is about 1:6.Six this solar batteries can be prepared on the standard-sized silicon wafer of 156mm × 156mm, then Divided (cutting) to provide the solar battery of diagram.In other variations, eight can be prepared by standard silicon wafers Size is about 19.5mm × 156mm, therefore the solar battery 10 that length-width ratio is about 1:8.More generally, solar battery 10 There can be the length-width ratio of for example, about 1:2 to about 1:20, and can be by the chip system of standard size chip or any other suitable dimension It is standby.
Fig. 3 A shows illustrative methods, using this method, it is cleavable, decompose or otherwise separate standard shape ruler Very little dead square silicon solar cell chip 45, and form the rectangle solar battery just described.In this example, from chip Central part cut the rectangle solar battery 10L of several full durations, in addition, it is shorter to cut several from the end of chip Rectangle solar battery 10S, and abandon chip chamfering or radiused corners.Solar battery 10L can be used to form one The stacking formula superbattery of width, solar battery 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 battery that the end of chip is cut.Figure 2B to Fig. 2 C shows the front surface of illustrative " V word " rectangle solar battery 10, and the front surface is substantially like in Fig. 2A Front surface, but have chamfering, these chamferings are remained from the chip for cutting solar battery.In Fig. 2 B, bus 15 settings on one side shorter in two long sides, and be parallel to this on one side substantially extend its length, then both ends extremely Extend at least partially about the chamfering of solar battery.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 shows the front view and rearview of pseudo-square wafers 45, Pseudo-square wafers 45 can be cut along dotted line shown in Fig. 3 C, be similar to the metallization of front surface shown in Fig. 2A to provide and have Multiple solar batteries 10 of pattern, and with two chamfering sun for being similar to front surface metallization pattern shown in Fig. 2 B It can battery 10.
In the exemplary front surface metallization pattern shown in Fig. 2 B, around two of the chamfering extension of battery in bus 15 End increases with the distance for the part being located near battery long side away from bus, can respectively have and gradually become smaller and (become narrow gradually) Width.Similarly, in the exemplary front surface metallization pattern shown in Fig. 3 B, discrete engagement pad 15 is interconnected The both ends of thin conducting wire extend around the chamfering of solar battery, and with long away from the solar battery along the discrete engagement pad of arrangement The distance on side increases and gradually becomes smaller.This gradually become smaller is optional, but can be before not dramatically increasing resistive loss It puts, the metal used and the masking to solar battery effective coverage is advantageously reduced.
Fig. 3 D to Fig. 3 E shows the front view and rearview of perfect square wafers 47, and perfect square wafers 47 can edge The cutting of dotted line shown in Fig. 3 E, so that providing has the multiple solar-electricities for being similar to front surface metallization pattern shown in Fig. 2A Pond 10.
Chamfering rectangle solar battery can be used to form the superbattery for only including chamfering solar battery.In addition or as Substitution, one or more such chamfering rectangle solar batteries can with one or more non-chamfering rectangle solar batteries (for example, It Fig. 2A) is applied in combination, and forms superbattery.For example, the end solar battery of superbattery can be chamfering solar-electricity Pond, and in-between solar battery can be non-chamfering solar battery.If (or more generally, existed in superbattery In solar energy module) chamfering solar battery and non-chamfering solar battery is applied in combination, then it may be advantageous that too for these It is positive can battery select following sizes: during solar cell working, chamfering solar battery and non-chamfering solar battery this The front surface of the two is exposed to the area equation under sunlight.In this way by the area matched of two kinds of solar batteries, just Make the currents match generated in chamfering solar battery and non-chamfering solar battery, so as to improve including chamfering solar battery The performance of the series-connected battery string of both non-chamfering solar batteries.Such as by adjusting a plurality of line along cut crystal Position, so that chamfering solar battery is slightly wider than non-chamfering solar-electricity on the direction perpendicular to solar battery long axis Pond, so that it may make the area of the chamfering solar battery cut from same pseudo-square wafers and non-chamfering solar battery Match, to compensate the turning lacked on chamfering solar battery.
Solar energy module can only include following three superbattery: only be formed by non-chamfering rectangle solar battery super Battery, the superbattery only formed by chamfering rectangle solar battery, or including chamfering solar battery and non-chamfering solar energy Superbattery including battery；It may also comprise any combination of above-mentioned three kinds of variations of superbattery.
In some cases, standard-sized square or dead square solar cell wafer are (for example, chip 45 or crystalline substance Piece 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 change The efficiency of kind obtained rectangle solar battery trims one or more edges of chip in some variations, To which first the lower part of efficiency be removed before cut crystal.It may be, for example, about from the width for the part that Waffer edge is trimmed 1mm to about 5mm.In addition, cut from chip two end solar batteries 10 can be oriented as shown in Fig. 3 B and Fig. 3 D At its front surface bus (or discrete engagement pad) 15 along its external margin, thus along two edges of chip.Due at this In superbattery disclosed in specification, bus (or discrete engagement pad) 15 is usually Chong Die with adjacent solar battery, so, The performance of solar battery is had no effect on along the low phototransformation efficiency at the two edges of chip.Therefore, in some variations In, the side that the short side orientation of rectangle solar battery is parallel in square or pseudo-square wafers is trimmed as just describing Edge, but do not trim the edge that the long side orientation of rectangle solar battery is parallel on chip.In other variations, as rigid One, two, three or four edge of square wafers (for example, chip 47 in Fig. 3 D) is trimmed as description.At it In his variations, one, two, three or four long edge of pseudo-square wafers is trimmed as just describing.
With aspect than, area be less than standard 156mm × 156mm solar battery long and narrow solar battery (such as Shown in figure) it is advantageously used for reducing the I in solar cell module disclosed in this specification2The loss of R resistive power. In particular, since the silicon solar cell of the area comparison with standard size of solar battery 10 reduces, so solar battery The electric current of generation reduces, to directly reduce the resistive function in the series-connected battery string of solar battery and such solar battery Rate loss.In addition, this class rectangle solar battery is arranged in superbattery 100, so that current parallel is in solar battery Short side flow through superbattery, can shorten electric current pass through semiconductor material reach front surface metallization pattern in 20 institute of finger-shaped material The distance having to flow through, and the required length of finger-shaped material can be shortened, so that resistive power loss can also be reduced.
As described above, these solar batteries are engaged with each other in the overlapping region of the solar battery 10 of overlapping, from And be electrically connected in series these solar batteries, 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 battery 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 rather than Continuous bus is applied in combination).Bypass wire 40 interconnects finger-shaped material 20 so that current bypass bus 15 and bypass wire 40 it 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 it He mode is isolated by the multiple regions of solar battery 10 with bus 15.Bypass wire is in such finger-shaped material separated and bus Between provide replacement circuit diameter.The example of diagram shows the bypass wire 40 for being parallel to the setting of bus 15, and bypass wire 40 is big About extend the overall length of bus, and interconnects each finger-shaped material 20.This arrangement may be preferred, but be not required.If deposited In bypass wire, without being parallel to bus extension, without the overall length for extending bus.In addition, bypass wire at least interconnects two A finger-shaped material, but without interconnecting all finger-shaped materials.It can be for example longer to substitute using two or more shorter bypass wires Bypass wire.Any suitable arrangement of bypass wire can be used.The purposes of such bypass wire was submitted on 2 13rd, 2012 Entitled " Solar Cell With Metallization Compensating For Or Preventing 13/371,790 beauty of No. of Cracking " (there is the solar battery for compensating or avoiding the metallization pattern of rupture) 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 is by finger-like 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 battery Current path is supplied to bus 15 by the region that may be otherwise electrically isolated by such crackle in 10.
15 equivalent width of bus before although some examples of diagram are shown, and substantially extend the length of solar battery 10 The length on side, but this is not required.For example, as described above, preceding bus 15 can be discrete by two or more in front surface Engagement pad 15 substitutes, these discrete engagement pads 15 can for example be in line arrangement along the side of solar battery 10 each other, for example, 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, such as Shown in the attached drawing (for example) mentioned just now.In such variations, measured perpendicular to the long side of solar battery, engagement pad Width may be, for example, by about 2 to about 20 times of the thin conducting wire of engagement pad interconnection.There may be individual (for example, small) engagement pad For each finger-shaped material in front surface metallization pattern, alternatively, each engagement pad may be connected to two or more finger-shaped materials. For example, front surface engagement pad 15 can be square, or to be parallel to the rectangle of the Elongation of Edge of solar battery.Front surface contact The width of pad 15 may be, for example, about 1mm to about 1.5mm perpendicular to the long side of solar battery；Its length is parallel to solar-electricity The long side in pond may be, for example, about 1mm to about 10mm.It is parallel to the long side measurement of solar battery, the spacing between engagement pad 15 It may be, for example, about 3mm to about 30mm.
Alternatively, solar battery 10 can lack preceding bus 15 and discrete preceding engagement pad 15, thus only in front surface It include finger-shaped material 20 in metallization pattern.In such variations, the electricity that is executed originally by preceding bus 15 or preceding engagement pad 15 Flow collecting function, conduction that can completely or partially by two solar batteries 10 are engaged with each other in above-mentioned superimposed structure Property material execute.
Not only lack bus 15 but also the solar battery for lacking engagement pad 15 may include bypass wire 40, and also may not include bypass Conducting wire 40.If there is no bus 15 and engagement pad 15, then bypass wire 40 can be arranged to bypass in bypass wire and preceding table The crackle formed between the part of the solar battery of overlapping is conductively joined in the metallization pattern of face.
(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 any Other suitable materials and technique.In the variations that front surface metallization pattern is formed by silver, discrete front surface is used Engagement pad 15 rather than continuous bus 15 along battery edge, reduce the silver content on solar battery, so as to advantageously Reduced cost.In the variations that front surface metallization pattern is formed by copper or another conductor cheaper than silver, it can be used 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 battery.At these In example, rear surface metallization pattern includes the discrete rear surface arranged along the one long edge of solar battery rear surface Engagement pad 25, and substantially cover the hard contact 30 of all residual areas of solar battery rear surface.It is super in the formula of stacking In grade battery, engagement pad 25 is for example joined to the edge arrangement of bus or the upper surface along adjacent overlapping solar battery Discrete engagement pad, so that two solar batteries are electrically connected in series.For example, each discrete rear surface engagement pad 25 can be with It is overlapped corresponding discrete front surface engagement pad 15 in the front surface of solar battery to be aligned, and by being only applied to discrete engagement pad On conductive bonding material be joined to the corresponding discrete front surface engagement pad 15.For example, discrete engagement pad 25 can be positive Rectangular (Fig. 2 D), or to be parallel to the rectangle of the Elongation of Edge of solar battery (Fig. 2 E to Fig. 2 G, Fig. 3 C, Fig. 3 E).Engagement pad 25 width may be, for example, about 1mm to about 5mm perpendicular to the long side of solar battery；Its length is parallel to solar battery Long side may be, for example, about 1mm to about 10mm.It is parallel to the long side measurement of solar battery, the spacing between engagement pad 25 can example 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, uses In mitigating, the back surface in solar battery is compound, thus improves solar battery efficiency.If contact 30 by copper rather than aluminium It is formed, then contact 30 can be applied in combination with another passivation scheme (for example, aluminium oxide), so that it is multiple similarly to mitigate back surface It closes.Discrete engagement pad 25 can be formed for example by silver paste.Using discrete silver-colored engagement pad 25 rather than along the continuous of battery edge Silver-colored engagement pad reduces the silver content in rear surface metallization pattern, this can advantageously reduced cost.
In addition, if solar battery is answered dependent on back surface field provided by the aluminium contact by being formed to mitigate back surface Close, then using discrete silver contact rather than continuous silver contact can improve solar battery efficiency.This is because silver-colored rear surface Contact does not provide back surface field, therefore often promotes Carrier recombination, and generates above silver contact in solar cells Extremely (invalid) volume.In the solar battery string as usual with tape tabs, these dead volumes are usually by solar-electricity Welding and/or bus in the front surface of pond cover, therefore not will lead to any additional loss in efficiency.However, being disclosed herein Solar battery and superbattery in, the volume that the top of rear surface silver engagement pad 25 is located in solar battery is usually complete It is not covered by front surface metallization pattern, so while any dead volume generated using silver-colored rear surface metallization pattern all will Reduce the efficiency of battery.Therefore, using discrete silver-colored engagement pad 25 rather than along the continuous of solar battery rear surface edge Silver-colored engagement pad, reduces the volume in any corresponding dead zone, so improve the efficiency of solar battery.
Mitigating in the compound variations of back surface independent of back surface field, rear surface metallization pattern can be used Along solar battery length extend continuous bus 25 rather than discrete engagement pad 25, (for example) such asFig. 2 QIt is shown.It is this 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 pattern Variations finger contact shown in the front surface metallization pattern similar to Fig. 2A to Fig. 2 C can be used, 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 side The silver-colored front surface metallization pattern of line conductor 40, and metallize including the rear surface of aluminium contact 30 and discrete silver-colored engagement pad 25 Pattern.Table before the copper including continuous bus 15, finger-shaped material 20 and optional bypass wire 40 can be used in another suitable combination Face metallization pattern, and the rear surface metallization pattern including continuous bus 25 and copper contact 30.
In the process (being described in more detail) of manufacture superbattery, for engaging weight adjacent in superbattery The conductive bonding material of folded solar battery only can (discretely or continuously) be assigned to solar battery front surface or rear table In the engagement pad of the edge in face, without being assigned on peripheral part of solar battery.This reduces the dosage of material, and such as It is upper described, it can reduce or reconcile the stress because of caused by the CTE mismatch of the CTE of conductive bonding material and solar battery.But During or after deposition and before curing, the multiple portions of conductive bonding material may be intended to spread to engagement pad it Outside, it then spreads on the corresponding part of solar battery.For example, the binding resin part of conductive bonding material can be by capillary force It extracts engagement pad out, then spreads in texture or porous part adjacent in solar cell surface.In addition, in deposition process Period, some conductive bonding materials may not reach engagement pad, but be deposited to the adjacent part of solar cell surface On, it may then be spread from these adjacent parts to surrounding.This distribution of conductive bonding material and/or the inaccurate phenomenon of deposition The engagement between the solar battery of overlapping may be weakened, and conductive bonding material in solar battery may be damaged and spread thereon Or those of mistakenly it is deposited on part.Such as by near each engagement pad or around form obstacle or barrier, Thus conductive bonding material is substantially held in the metallization pattern of appropriate position, can reduce or prevent conductive bonding material This distribution phenomenon.
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, thus the shape between engagement pad and barrier At trench (moat).The uncured conduction of engagement pad is flowed out or not reached when being assigned on solar battery from engagement pad The part 19 of property adhesive bond material 18 can be limited in trench by barrier 17.This prevent conductive adhesive grafting material from Engagement pad is further spread on peripheral part of battery.Barrier 17 can for example by with finger-shaped material 20 and engagement pad 15 (for example, Silver) identical material formed, and height may be, for example, about 10 microns to about 40 microns, and width may be, for example, about 30 microns to about 100 microns.The trench formed between barrier 17 and engagement pad 15 can have for example, about 100 microns to about 2 millimeters of width.Although The example of diagram only surrounds each preceding engagement pad 15 with single barrier 17, but in other variations, can be for example around every A engagement pad is concentrically disposed with two or more such barriers.Front surface engagement pad and surrounding one or more barriers can Form the shape for example similar to " target center " target.As illustrated in figure 2h, for example, barrier 17 can be interconnected with finger-shaped material 20, and can be with The thin conducting wire interconnection that engagement pad 15 is interconnected.
Similarly, as shown in Fig. 2 L to Fig. 2 N, for example, rear surface metallization pattern may include after (for example, silver) is discrete (for example, aluminium) contact 30 of all residual areas of engagement pad 25, substantially covering solar battery rear surface, and (for example, Silver) barrier 27, wherein each barrier 17 is around corresponding rear engagement pad 25 and serves as obstacle, thus in engagement pad and barrier Between form trench.As shown, trench can be filled in a part of contact 30.It is flowed out from engagement pad 25 or is being assigned to the sun The multiple portions for the uncured conductive adhesive grafting material for not reaching engagement pad when on energy battery can be limited by barrier 27 In trench.This prevents conductive adhesive grafting material from peripheral part that engagement pad further spreads to battery.Barrier 27 height may be, for example, about 10 microns to about 40 microns, and width may be, for example, about 50 microns to about 500 microns.Barrier 27 The trench formed between engagement pad 25 can have for example, about 100 microns to about 2 millimeters of width.Although the example of diagram is only enclosed There is single barrier 27 around each rear surface engagement pad 25, but in other variations, it can be for example same around each engagement pad Two or more such barriers are arranged in heart.Rear surface engagement pad and surrounding one or more barriers can form such as class It is similar to the shape of " 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 shows this barrier 27 around rear surface bus 25.Front surface is total Line (for example, bus 15 in Fig. 2A) can similarly be surround by barrier.Similar, row's front surface engagement pad or rear surface connect Touch 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 battery Edge substantially extends the barrier of the length of solar battery, rather than around bus or one or more as just describing A engagement pad, bus or engagement pad are arranged between barrier and the edge of solar battery at this time.This barrier is as bypass Conducting wire may serve a dual purpose (as described above).For example, bypass wire 40 provides barrier in Fig. 2 R, which helps to prevent Only uncured conductive adhesive grafting material is spread on the effective coverage of solar battery front surface in engagement pad 15.Class As arrangement can be used for rear surface metallization pattern.
The barrier for preventing conductive adhesive grafting material from spreading can be spaced apart with engagement pad or bus, and form just description The trench crossed, but this is not required.Alternatively, such barrier can abut engagement pad or bus, (for example) such as Fig. 2 O or figure Shown in 2P.In such variations, barrier is preferably higher than engagement pad or bus, by uncured conductive adhesive Grafting material is retained in engagement pad or bus.Although Fig. 2 O and Fig. 2 P show multiple portions on front surface metallization pattern Point, but similar arrangement can also be used for rear surface metallization pattern.
The moat between barrier and/or such barrier and engagement pad or bus for preventing conductive adhesive grafting material from spreading Ditch, and any conductive adhesive grafting material in such trench has been spread to, it all can be optionally located at solar battery On surface in the region Chong Die with the adjacent solar battery in superbattery, therefore invisible, and covered shield and unlikely sudden and violent It is exposed to solar radiation.
, using the substituted or supplemented of barrier, mask or any other suitable method can be used as as just description (for example, silk-screen printing) deposits conductive bonding material, realizes accurate deposition whereby, so that reducing may spread during deposition The amount of the conductive bonding material of engagement pad is not reached except to engagement pad or.
More generally, any suitable front surface metallization pattern and rear surface metallization figure can be used in solar battery 10 Case.
Fig. 4 A shows a part of the front surface of exemplary rectangular superbattery 100, which includes such as Solar battery 10 shown in Fig. 2A, the stacking mode of these solar batteries 10 as shown in Figure 1 are arranged.It is covered due to using Geometry does not have physical clearance between pairs of solar battery 10.In addition, although it can be seen that 100 one end of superbattery The bus 15 of the solar battery 10 at place, but the bus (or front surface engagement pad) of other solar batteries be hidden in it is adjacent The lower section of the lap of solar battery.Therefore, superbattery 100 is able to be used effectively in occupies in solar energy module Region.In particular, with the solar battery arrangement as usual with protruding portion and in solar battery by according on surface The situation of solar battery arrangement including many visible buses is compared, and larger a part can be used for generating electric power in the region. Fig. 4 B to Fig. 4 C respectively illustrates the front view and rearview of another exemplary superbattery 100, and superbattery 100 mainly wraps The V word rectangle silicon solar cell of chamfering is included, but 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 side The solar battery of line conductor 40 can be similar to be overlapped like that shown in Fig. 4 A, but not cover bypass wire.
The solar energy at 100 other end of front surface bus 15 and superbattery exposed at one end of superbattery 100 The rear surface metallization of battery provides negative (terminal) terminal contacts and positive (terminal) terminal contacts, the touching of these ends for superbattery Point can be used to for superbattery 100 to be electrically connected to other superbatteries, and/or as needed, superbattery 100 is electrically connected It is 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 Block, the length of 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.Can also be The shape and size that solar energy module selects any other suitable.Can be suitable for using any of superbattery in solar energy module Arrangement.
Square or rectangle solar energy module in, superbattery be usually arranged to the short side of solar energy module or The parallel row of long side.Each row may comprise the one, two or more superbattery of end-to-end arrangement.Form this sun The superbattery 100 of a part of energy module may include the solar battery 10 of any suitable number, and with any suitable Length.In some variations, it is part thereof of that the respective length of superbattery 100 is approximately equal to these superbatteries composition The length of the short side of rectangle solar energy module.In other variations, the respective length of superbattery 100 is approximately equal to these Superbattery constitutes the half of the bond length of part thereof of rectangle solar energy module.In other variations, super electricity The respective length in pond 100 is approximately equal to the length that these superbatteries constitute the long side of part thereof of rectangle solar energy module. In other variations, the respective length of superbattery 100 is approximately equal to these superbatteries and constitutes part thereof of rectangle The half of the long side length of solar energy module.The quantity of solar battery needed for making the superbattery of these length takes naturally Certainly in the lap of the size of solar energy module, the size of solar battery and adjacent solar battery.It can also be super electricity The length that pond 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 for example having a size of from about 19.5mm × 56 rectangle solar batteries of about 156mm, wherein adjacent solar battery It is overlapped about 3mm.Eight this rectangle sun can be partitioned into from conventional square or dead square 156mm × 156mm chip It can battery.Alternatively, this superbattery may include for example having a size of from about 26mm × 38 rectangle solar-electricities of about 156mm Pond, wherein adjacent solar battery is overlapped about 2mm.It can be from conventional square or dead square 156mm × 156mm chip It is partitioned into six this rectangle solar batteries.It is long that rectangle solar energy module short side is approximately equal in the length of superbattery 100 In the variations of the half of degree, superbattery may include for example having a size of from about 19.5mm × 28 rectangle sun of about 156mm Energy battery, wherein adjacent solar battery is overlapped about 3mm.Alternatively, this superbattery may include for example having a size of from about 19 rectangle solar batteries of 26mm × about 156mm, wherein adjacent solar battery is 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 for example including having a size of from about 26mm × 72 rectangle solar batteries of 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 for example having a size of from about 26mm × 36 rectangle solar batteries of about 156mm, wherein adjacent solar-electricity Pond is overlapped about 2mm.
Fig. 5 A shows the exemplary rectangular solar energy module 200 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, every row's superbattery may comprise three or more superbatteries.In addition, the solar energy module of like configurations Including superbattery number of rows it is more than shown in the example or few.(for example, Figure 14 A is shown including 24 rectangles The solar energy module of superbattery, these superbatteries are arranged to 12 rows, every row 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 facilitates edge Solar energy module center line formed to superbattery 100 front surface terminal contacts (for example, exposure bus or discrete touching The electrical contact of point 15).For example, two superbatteries in a row may be arranged so that a superbattery has along the sun The front surface terminal contact of the center line of energy module, and after another superbattery has along the center line of solar energy module Surface terminal contact.When using this arrangement, two superbatteries in a row can be electrically connected in series by interconnection piece, the interconnection piece It is arranged along the center line of solar energy module, and is joined to the front surface terminal contact and another super electricity of a superbattery The rear surface terminal contact in pond.(see, for example, Fig. 8 C being discussed below).It include three or more in every row's superbattery Additional gap may be present in the variations of superbattery, between superbattery, and these additional gaps can be similarly Contribute to form the electrical contact of the front surface terminal contacts far from each side of solar energy module.
Fig. 5 B shows the exemplary rectangular solar energy module 300 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, Its long side is parallel to the short side orientation of module.The solar energy module of like configurations may also comprise the superbattery of this side length, but Its number of rows is more than number of rows shown in the example or few.
The solar energy module 200 that Fig. 5 B also shows Fig. 5 A is wherein respectively being arranged between the adjacent superbattery in superbattery Appearance in the case where very close to each other.Such as by by superbattery be arranged so that two superbatteries in every row all along The center line of module has back surface terminal contacts, so that it may eliminate the gap 210 of Fig. 5 A.In this case, because not needing The front surface of superbattery is touched along the center line of module, so superbattery can be arranged to almost against each other, therebetween Have little or no additional gap.Alternatively, two superbatteries 100 in a row may be arranged so that one A superbattery is along module on one side with front surface terminal contacts and along the center line of module with the touching of rear surface end Point, another superbattery have rear table along the center line of module with front surface terminal contacts and along the relative edge of module Face terminal contacts, and the adjacent end portion overlapping of the two superbatteries.Flexible interconnection can be interposed in the weight of superbattery Between folded end, so that it is not covered any part of solar energy module front surface, be supplied to a super electricity for that will be electrically connected The front surface terminal contacts in pond and the rear surface terminal contacts of another superbattery.Just contain three or more superbatteries Row for, both ways can be used cooperatively.
The row of superbattery shown in Fig. 5 A to Fig. 5 B and superbattery can be by being electrically connected in series times with electrical connection in parallel What proper combination interconnects, for example, combination Figure 10 A to Figure 15 as follows is further described.Interconnection between superbattery can Such as it is realized using the flexible interconnection described below in conjunction with Fig. 5 C to Fig. 5 G and subsequent drawings is similar to.Such as this specification Described in many examples shown that the superbattery in solar energy module as described herein can be by being connected in series and being connected in parallel Combination interconnect, to provide the output voltage being substantially equal with the output voltage of conventional solar energy module to module. In such cases, the output that the output electric current of next solar energy module described herein can also substantially with conventional solar energy module Electric current is equal.Alternatively, as described further below, the superbattery in solar energy module can interconnect, and by the sun Energy module provides the output voltage of the output voltage apparent increase compared to conventional solar energy module.
Fig. 5 C shows the exemplary rectangular solar energy module 350 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, Long side is parallel to the long side orientation of module.The solar energy module of like configurations may also comprise the superbattery of this side length, 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) includes 72 rectangle solar batteries, the width of each rectangle solar battery are approximately equal to 156mm × 156mm square or quasi- square The 1/6 of the width of shape chip.The rectangle solar energy with any other suitable dimension that can also be used any other appropriate number of Battery.In this example, the front surface terminal contact of superbattery is electrically connected to each other by flexible interconnection 400, flexible The edge of 400 one short side of proximity modules of interconnection piece is arranged and is parallel to edge extension.The rear surface terminal of superbattery touches Point is similarly electrically connected to by flexible interconnection each other, these flexible interconnections are in solar energy module behind proximity modules The edge of another short side is arranged and is parallel to edge extension.Rear surface interconnection piece is invisible in figure 5 c.This arrangement will Six superbattery parallel connections isometric with module are electrically connected.It is soft in solar energy module construction and other solar energy modules construction The details of property interconnection piece and its arrangement is discussed in more detail hereinafter in conjunction with Fig. 6 to Fig. 8 G.
Fig. 5 D shows the exemplary rectangular solar energy module 360 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, every row's superbattery may comprise three or more superbatteries.In addition, the solar energy module of like configurations Including superbattery number of rows it is more than shown in the example or few.Each of the example (and several following examples) Superbattery all includes 36 rectangle solar batteries, and the width of each rectangle solar battery is approximately equal to 156mm × 156mm The 1/6 of square or the width of pseudo-square wafers.It can also be used any other appropriate number of with any other suitable ruler Very little rectangle solar battery.Gap 410 helps to be formed along the center line of solar energy module to before superbattery 100 The electrical contact of face extremities contact.In this example, the edge of one short side of proximity modules is arranged and is parallel to edge extension Flexible interconnection 400 the front surface terminal contact of six superbatteries is electrically interconnected.Similarly, in module behind proximity modules The edge of another short side be arranged and be parallel to the flexible interconnection of edge extension for the rear table of other six superbatteries The electrical connection of face terminal contact.The flexible interconnection (this is not shown in the figure) being arranged along gap 410 is by each pair of super electricity in a row Pond interconnected in series, and be optionally laterally extended, by adjacent row's interconnected in parallel.This arrangement is in parallel electric by six row's superbatteries Connection.Optionally, in first group of superbattery, first superbattery in every row and first in other every rows are super Battery parallel connection electrical connection；Second in second superbattery and other every rows in second group of superbattery, in every row Superbattery parallel connection electrical connection, and this two groups of superbatteries are electrically connected in series.When being arranged using latter, this two groups of super electricity Each superbattery in pond 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, after superbattery Surface terminal contact is connected with each other along the edge of one short side of module.Details B similarly identifies cross section shown in Fig. 8 B The position of view, at this location, the front surface terminal contact of superbattery are mutually interconnected along the edge of another short side of module It connects.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 shows the exemplary rectangular solar energy module 370 for being configured similarly to Fig. 5 C, but in this example, it is formed All solar batteries of superbattery are all the V word solar batteries with chamfering, the chamfering with it is sunny from its segmentation The turning of the pseudo-square wafers of energy battery is corresponding.
Fig. 5 F shows another exemplary rectangular solar energy module 380 for being configured similarly to Fig. 5 C, but in the example In, the solar battery for forming superbattery includes the mixture of V word solar battery and rectangle solar battery, these sun Energy battery is arranged to the shape reappeared and be partitioned into the pseudo-square wafers of these solar batteries from it.In the example of Fig. 5 F In, V word solar battery is wide than rectangle solar battery on the direction perpendicular to its long axis, to compensate V word battery missing Turning so that V word solar battery and rectangle solar battery are exposed to the significant surface of solar radiation during module work Product is equal, so make both batteries that there is matched electric current.
Fig. 5 G, which is shown, is configured similarly to another exemplary rectangular of Fig. 5 E (that is, only including V word solar battery) too Positive energy module, but in the solar energy module of Fig. 5 G, the adjacent V word solar battery in superbattery is arranged to mutual Mirror image, so the edge length that they are overlapped is equal.This arrangement maximizes the length of each overlapping j oint, thus is conducive to Hot-fluid flows through superbattery.
Other constructions of rectangle solar energy module may include the row only formed by rectangle (non-chamfering) solar battery or Multiple rows of superbattery, and a row or multi-row superbattery only formed by chamfering solar battery.For example, rectangle solar energy mould Block can be similar to Fig. 5 C and construct like that, and only two rows of superbatteries of outside are respectively only formed by chamfering solar battery One row's superbattery substitution.Chamfering solar battery in these rows can for example be arranged to mirror image pair, as depicted in fig. 5g.
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 phase Deng conventional solar energy module in electric current 1/6, the reason is that formed superbattery rectangle solar battery effective area about It is the 1/6 of stock size solar battery effective area.However, since six row's superbattery parallel connections in these examples are electrically connected It connects, so to can be equal to the identical conventional solar energy module of area generated total for the total current that illustrative solar energy module generates Electric current.This helps to substitute routine with the exemplary solar energy module (and other examples described below) of Fig. 5 C to Fig. 5 G Solar energy module.
Fig. 6 illustrates in greater detail the example with three row's superbatteries of flexible electrical interconnection interconnection compared to Fig. 5 C to Fig. 5 G Property arrangement, this arrangement is for the superbattery in every row to be one another in series, and for each row to be connected in parallel to each other.These rows can be with Three rows e.g. in the solar energy module of Fig. 5 D.In the example of fig. 6, each superbattery 100 has a flexible interconnection Part 400 is conductively joined to its front surface terminal contact, and has another flexible interconnection to be conductively joined to table thereafter Face terminal contact.Two superbatteries in every row are electrically connected in series by shared flexible interconnection, the shared flexible interconnection Part is conductively joined to the front surface terminal contact an of superbattery and the rear surface terminal contact of another superbattery. Each flexible interconnection is arranged adjacent to one end of its superbattery engaged and is parallel to the extension of this one end, and can be lateral Extending to will conductively be joined in adjacent row except the superbattery of the flexible interconnection on superbattery, thus by phase Neighbour row electrical connection in parallel.Dotted line in Fig. 6 depicts can not by the covering part masking of superbattery in flexible interconnection It is covered and sightless part in the part seen or superbattery by the covering part of flexible interconnection.
Flexible interconnection 400 can be led for engaging the mechanical plasticity of the solar battery of overlapping as described above by (for example) It is joined to superbattery with electrically engaging conductivity of materials.Optionally, conductive bonding material can be only positioned at along superbattery edge Multiple discrete positions, without formed substantially extend superbattery edge length continuous lines, it is intended to reduce or reconcile exist It is parallel on the direction at superbattery edge, because the heat of the thermal expansion coefficient and superbattery of conductive bonding material or interconnection piece is swollen Stress caused by swollen CTE mismatch.
Flexible interconnection 400 can (for example) be formed by scale copper or including scale copper.Flexible interconnection 400 optionally by Patterning or otherwise construct, with increase its with the machinery in the edge-perpendicular of superbattery and the two parallel directions Plasticity (flexibility), thus reduce or reconcile with the CTE in the edge-perpendicular of superbattery and parallel direction because of interconnection piece Stress caused by CTE mismatch with superbattery.This patterning may include (for example) forming slit, slit or hole.Interconnection The thickness of the conductive portion of part 400 can for example, less than about 100 microns, less than about 50 microns, less than about 30 microns or be less than about 25 microns, to increase the flexibility of interconnection piece.It flexible interconnection and its is sufficiently large with the mechanical plasticity of the engagement of superbattery, So that the superbattery of interconnection is (more detailed below in conjunction with the method for manufacture stacking formula solar cell module in lamination process Carefully describe) it can be remained intact under the stress because of caused by CTE mismatch, and within the scope of 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.
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 less than or equal to about 0.01 ohm.
Fig. 7 A shows the several representative configuration for being applicable to flexible interconnection 400, uses 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 Laminate structures, wherein superbattery and one or more encapsulating materials 4101 are sandwiched between transparent front plate 420 and back plate 430. Transparent front plate can be (for example) glass.Optionally, back plate is also possible to transparent, this makes the two sides of solar energy module can Work.Back plate can be (for example) polymer sheet.Alternatively, solar energy module can be after existing glass front plate has glass again The double-sided glass module of plate.
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 under superbattery Side extends internally, thus invisible from the front of solar energy module.Additional encapsulant item may be provided at interconnection piece 400 with it is super Between the rear surface of battery, 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 terminal for being conductively joined to superbattery The example of the flexible interconnection 400 of 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 Flexible interconnection 400 is conductively joined to the front surface terminal contact an of superbattery and the rear table of another superbattery Face terminal contact, so that the two superbatteries are electrically connected in series.
The flexible interconnection for being electrically connected to the front surface terminal contact of superbattery can be constructed or be arranged to only in the sun Occupying in the front surface of energy module can be for example positioned at the relatively narrow width of solar energy module adjacent edges.It is such in module front surface Width of the region that 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 the arrangement shown in such as Fig. 8 B, flexible interconnection 400 It can be configured to its of length no more than this distance extended to except superbattery end.Fig. 8 D to Fig. 8 G is shown will be flexible Interconnection piece is electrically connected to the additional example of the arrangement of the front surface terminal contact of superbattery, these arrangements can be only before module Relatively narrow width is occupied on surface.Such arrangement helps to effectively utilize the front surface area of module to generate electric power.
Fig. 8 D shows the front surface terminal contact for being conductively joined to superbattery, and at the edge of superbattery Surrounding folds into the flexible interconnection 400 at superbattery rear portion.The insulating film 435 that can be coated in advance in flexible interconnection 400 It may be provided between flexible interconnection 400 and the rear surface of superbattery.
Fig. 8 E shows 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 broadband in the rear surface extension behind of superbattery 445.The insulating film 435 that can be coated on thin broadband 445 in advance may be provided at thin broadband 445 and superbattery rear surface it Between.
Fig. 8 F shows the front surface terminal contact for being joined to superbattery, and by crimped at the flexible interconnection of flatwise coil 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 include conductively be joined to superbattery front surface terminal contact it is thin Band part, and the 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, Or otherwise dye, to mitigate the vision between the interconnection piece and superbattery that are perceived by the normal observer of colour vision Comparison.For example, optional dark film or coating 425 cover on interconnection piece 400 originally from the front of module in Fig. 8 C Part.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 and string One group of 18 to 24 silicon solar cell of connection connection are connected in parallel.It may be in reverse-biased solar battery this is done to limit The amount of the middle electric power being dissipated as heat.Due to solar battery existing defects, front surface it is dirty or by uneven irradiation, Reduce its and transmit the ability of electric current generated in battery strings, thus solar battery be likely to become it is reverse-biased.Reverse-biased solar-electricity The heat generated in pond depends on the voltage at solar battery both ends and flows through the electric current of solar battery.If reverse-biased solar energy The voltage at battery both ends is more than the breakdown voltage of solar battery, then the heat to dissipate in battery will be equal to breakdown voltage multiplied by electricity The total current generated in the string of pond.Silicon solar cell usually has the breakdown voltage of 16 to 30 volts.Due to each silicon solar electricity Pond generates about 0.64 volt of voltage at work, so the battery strings that 24 or more solar batteries are constituted can be in reverse-biased solar energy Battery both ends generate the voltage more than breakdown voltage.
In and the conventional solar energy module that is interconnected by welding separated from one another in solar battery, heat is not easy to be transmitted remote Solar battery from fever.Therefore, the electric power that solar battery dissipates under breakdown voltage may be in solar cells Perhaps, fire can also be caused so as to cause apparent thermal damage by generating hot spot.So in conventional solar energy module, every group 18 to 24 series connection solar batteries just need a bypass diode, with ensure in battery strings it is none of too Positive energy battery can be by reverse-biased more than breakdown voltage.
It has been found by the applicant that heat be transmitted through readily along silicon superbattery between adjacent overlapping silicon solar cell compared with Thin not only conductive but also thermally conductive engagement.In addition, the electric current for flowing through the superbattery in solar energy module as described herein is usually small In the electric current for flowing through a string of conventional solar batteries, the reason is that superbattery as described herein is usually by stacking formula rectangle solar energy Battery is formed, wherein the effective area of each rectangle solar battery be both less than conventional solar battery effective area (for example, It is the 1/6 of the latter).In addition, the rectangular aspect ratio of usually used solar battery makes between adjacent solar battery herein Thermal contact area with stretching, extension.Therefore, the reverse-biased solar battery for breakdown voltage only dissipates less heat, and heat is easy to Superbattery and solar energy module are spread across, without will form dangerous hot spot.Applicant accordingly recognize that, as described herein The solar energy module formed by superbattery can be used than usually think need much less bypass diode.
For example, the solar battery for including can be used in some variations of solar energy module as described herein Number N be greater 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 battery or groups of solar battery 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 where 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 battery.Referring again to Fig. 8 A to Fig. 8 C, encapsulant 4101 can be or can wrap Containing thermoplastic olefin (TPO) polymer, TPO encapsulant is better than the ethylene-vinyl acetate of standard to the stability of light, heat (EVA) encapsulant.EVA just will become brown once being heated or being irradiated by ultraviolet light, and causes current limliting battery to generate hot spot and ask Topic.Using TPO encapsulant, 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, solar energy module can be mounted on terminal box On one or more edges, rather than solar energy module is behind, if being mounted on solar energy module behind, terminal box can be in mould Above block, additional thermal insulation layer is added for the solar battery in module.
Fig. 9 A shows the exemplary rectangular solar energy including six stacking formula rectangle superbatteries for being arranged to six rows Module, wherein every row extends the length of solar energy module long side.This six superbatteries are connected in parallel to each other electrical connection, and with setting Bypass diode parallel connection electrical connection in the terminal box 490 in solar energy module rear surface.Superbattery and bypass diode Between electrical connection be made into across insertion module laminate structures welding 450.
Fig. 9 B shows another exemplary rectangular including six stacking formula rectangle superbatteries for being arranged to six rows Solar energy module, wherein every row extends the length of solar energy module long side.These superbatteries are connected in parallel to each other electrical connection.Separation Plus end terminal box 490P and negative terminal terminal box 490N solar energy module is set in the rear surface of solar energy module Opposite end.Superbattery by the external cable 455 extended between the two terminal boxes and be located in one of wiring Bypass diode parallel connection electrical connection in box.
Fig. 9 C to Fig. 9 D includes the exemplary double-sided glass square for being arranged to six stacking formula rectangle superbatteries of six rows Shape solar energy module, wherein every row extends solar energy module long side in the laminate structures for including glass front plate and back glass Length.These superbatteries are connected in parallel to each other electrical connection.Isolated plus end terminal box 490P and negative terminal terminal box 490N pacifies In the opposite edges of solar energy module.
Stacking formula superbattery is used in module placement, is installation module level electric power controller (for example, DC/AC is micro- Inverter, DC/DC modular power optimizer, voltage intelligent switch and relevant apparatus) provide unique chance.Module level function The key feature of rate management system is can to optimize power.The superbattery for being such as described herein and using can produce than traditional panel more High voltage.In addition, superbattery module placement can also be by module subregion.Voltage increases, subregion increases, these are all optimization function The potential benefit of rate.
Fig. 9 E shows a kind of exemplary architecture that module level power management is carried out using stacking formula superbattery.Scheme herein In, exemplary rectangular solar energy module includes six stacking formula rectangle superbatteries for being arranged to six rows, wherein every row prolongs Stretch the length of solar energy module long side.Three pairs of superbatteries are separately connected to power management system 460, are then able to more discrete The power of ground optimization module.
Fig. 9 F shows another 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 every row is Extend the length of solar energy module long side.Six superbatteries are separately connected to power management system 460, are then able to more divide The on the spot power of optimization module.
Fig. 9 G shows another exemplary architecture that module level power management is carried out using stacking formula superbattery.Herein In figure, exemplary rectangular solar energy module include be arranged to six rows or more row six or more stacking formula rectangles it is super Battery 998, wherein three pairs or more are separately connected to bypass diode or power management system 460 to superbattery, then It is capable of the power of more discretely optimization module.
Fig. 9 H shows another exemplary architecture that module level power management is carried out using stacking formula superbattery.Herein In figure, exemplary rectangular solar energy module include be arranged to six rows or more row six or more stacking formula rectangles it is super Battery 998, wherein every two superbattery is connected in series, and all superbatteries are to being connected in parallel.Bypass diode or power tube Reason 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 prison Control the voltage output of the solar battery circuit (for example, one or more superbatteries) in solar energy module, " intelligent switch " Electric power controller just can determine whether the circuit includes any number of reverse-biased solar battery.If detecting the presence of reverse-biased Solar battery, then (for example) relay switch or other component just can be used in electric power controller, by corresponding circuit from electricity System disconnects.For example, if the voltage of the solar battery circuit of monitoring drops to predetermined threshold (VLimit) hereinafter, power management Device 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 decrease beyond one compared to other circuits in same solar array Fixed percentage or amplitude (for example, 20% or 10V), which will be cut off.Since intermodule communicates with each other, so electronics device Part will test this variation.
The specific implementation of this voltage intelligence can be integrated into existing module level power management solution (for example, Enphase Energy Co., Ltd, Solaredge Technologies Co., Ltd, Tigo Energy Co., Ltd mention Solution out) or customization circuit design.
It illustrates how to calculate threshold voltage VLimitAn example are as follows:
CellVoc@Low Irr&High Temp×Nnumber of cells in series–VrbReverse breakdown voltage≤VLimit,
Wherein:
·CellVoc@Low Irr&High Temp(minimum is pre- for the open-circuit voltage of=battery to work under Low emissivity and high temperature Phase work Voc)；
·Nnumber of cells in seriesThe quantity for the battery being connected in series in=monitored each superbattery；
·VrbReverse breakdown voltage=electric current is transmitted through battery needed for bucking voltage.
(for example) more than the 100 silicon sun are allowed using this method that intelligent switch carries out module level power management Energy battery is connected in series in individual module, the reliability without influencing safety and module.In addition, this intelligent switch can be used to Limitation enters the string voltage of central inverter.Therefore mountable longer module string, without worrying safety related to voltage 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 Example physical layout corresponding with these circuit diagrams is provided with Figure 14 C-2.When describing physical layout, it is assumed that each The front surface terminal contacts of superbattery have negative polarity, and the rear surface terminal contacts of each superbattery have anode Property.If the superbattery that in contrast, module uses has the front surface terminal contacts of positive polarity and the rear surface of negative polarity Terminal contacts, then by it is positive and negative exchange and the orientation of bypass diode is overturned, so that it may change hereafter to the discussion of physical layout.This Some in the various buses referred in the description of a little attached drawings can for example be formed by above-mentioned interconnection piece 400.It is retouched in these attached drawings Other buses stated can for example be implemented with the welding of the laminate structures of insertion solar energy module or with external cable.
Figure 10 A shows the exemplary circuit schematic diagram of solar energy module as shown in Figure 5 B, and wherein solar energy module includes 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 long side is parallel to the short side orientation of module.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 a part in module front surface.
Figure 11 A shows the exemplary circuit schematic diagram of solar energy module as shown in Figure 5A, and wherein solar energy module includes The length of 20 rectangle superbatteries 100, each rectangle superbattery 100 is approximately equal to the one of solar energy module bond length Half, and the end-to-end pairs of arrangement of these superbatteries, and form ten row's superbatteries.First superbattery in every row with First superbattery in other rows is connected in parallel, and is connected in parallel with bypass diode 500.Second in every row is super Battery is connected in parallel with second superbattery in other rows, and is connected in parallel with bypass diode 510.Two groups of superbatteries It is connected in series, two bypass diodes are also connected in series.
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, often First superbattery in row has along front surface (negative) terminal contacts on the first side of module and along module centers line Rear surface (just) terminal contacts, and second superbattery in every row has (negative) end of front surface along module centers line Terminal contacts and along in module with first rear surface (just) terminal contacts at opposite second.Bus 515N is by every row Front surface (negative) terminal contacts of one superbattery are connected to the plus end of bypass diode 500.Bus 515P will be in every row Rear surface (just) terminal contacts of second superbattery are connected to the negative terminal of bypass diode 510.Bus 520 will be in every row Front surface (negative) terminal contacts of second superbattery in rear surface (just) terminal contacts of first superbattery and every row It is connected to the negative terminal of bypass diode 500 and the plus end of bypass diode 510.
Bus 515P can be fully located at superbattery behind.The interconnection of bus 515N and/or bus 515N and superbattery Occupy a part in module front surface.Bus 520 can occupy a part in module front surface, so need as shown in Figure 5A Gap 210.Alternatively, bus 520 can be fully located at superbattery behind, and by the overlapped ends for being clipped in superbattery 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 Gap is not needed.
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, first superbattery in every row have along the first side of module front surface (negative) terminal contacts with Along rear surface (just) terminal contacts of module centers line, and second superbattery in every row has along module centers Rear surface (just) terminal contacts of line and along in module with first front surface (negative) terminal contacts at opposite second.Always Front surface (negative) terminal contacts of first superbattery in every row are connected to the plus end of bypass diode 500 by line 525N. Front surface (negative) terminal contacts of second battery in every row are connected to negative terminal and the side of bypass diode 500 by bus 530N The plus end of road diode 510.Rear surface (just) terminal contacts of first battery in every row are connected to bypass by bus 535P The negative terminal of diode 500 and the plus end of bypass diode 510.Bus 540P is by the rear surface of second battery in every row (just) the terminal contacts negative terminal that is connected to 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 a part in module front surface.
Figure 12 A shows 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.The electricity 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 bypass 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 poles Pipe 560 is connected in parallel；In the 4th group, second superbattery of lower five rows is connected in parallel with each other, and with bypass diode 555 It is connected in parallel.This four groups of superbatteries are serially connected.Four bypass diodes are also connected in series.
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, One 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 in module With first rear surface (just) terminal contacts at opposite second；After third group superbattery has along the first side of module Surface (just) terminal contacts and front surface (negative) terminal contacts along module centers line；4th group of superbattery has along mould Rear surface (just) terminal contacts of block center 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, will also These terminal contacts are connected to the plus end of bypass diode 545.Bus 570 is by the superbattery in first group of superbattery Rear surface (just) terminal contacts and front surface (negative) terminal contacts of the superbattery in second group of superbattery be connected to each other, These terminal contacts are also connected to the negative terminal of bypass diode 545 and the plus end of bypass diode 550.Bus 575 will Rear surface (just) terminal contacts of superbattery in second group of superbattery and the superbattery in the 4th group of superbattery Front surface (negative) terminal contacts are connected to each other, these terminal contacts are also connected to negative terminal and the bypass of bypass diode 550 The plus end of diode 555.Bus 580 is by rear surface (just) terminal contacts of the superbattery in the 4th group of superbattery and Front surface (negative) terminal contacts of superbattery in three groups of superbatteries are connected to each other, these terminal contacts are also connected to side The negative terminal of road diode 555 and the plus end of bypass diode 560.Bus 585P is by the super electricity in third group superbattery Rear surface (just) terminal contacts in pond are connected to each other, these terminal contacts are also connected to the negative terminal of bypass diode 560.
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 module A part in front surface.
Bus 570 and bus 580 can occupy a 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 shows 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.The electricity 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 that This is connected in parallel；In the 4th group, second superbattery of lower five rows is connected in parallel with each other.First group and second group is gone here and there each other Connection connection, thus be connected in parallel with bypass diode 590.Third group and the 4th group are serially connected, thus with by another Road diode 595 is connected in parallel.First, second group with third, the 4th group of series connection, two bypass diodes also company of series connection It connects.
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, One 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 in module With first rear surface (just) terminal contacts at opposite second；After third group superbattery has along the first side of module Surface (just) terminal contacts and front surface (negative) terminal contacts along module centers line；4th group of superbattery has along mould Rear surface (just) terminal contacts of block center 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 595 of bypass diode 590 Negative terminal.Rear surface (just) terminal contacts of first group of superbattery are connected to each other by bus 605, also by these terminal contacts It is connected to front surface (negative) terminal contacts of second group of superbattery.Bus 610P is by the rear surface of second group of superbattery (just) terminal contacts are connected to each other, these terminal contacts are also connected to the negative terminal of bypass diode 590.Bus 615N is by Front surface (negative) terminal contacts of four groups of superbatteries are connected to each other, these terminal contacts are also connected to bypass diode 595 Plus end.Front surface (negative) terminal contacts of third group superbattery are connected to each other by bus 620, also by these terminal contacts It is 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 module A part in front surface.
Bus 605 and bus 620 occupy a 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 shows the exemplary circuit schematic diagram of solar energy module as shown in Figure 5 B, and wherein solar energy module includes 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 long side is parallel to the short side orientation of module.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.
The circuit diagram of Figure 13 B and the difference of Figure 13 A are super instead of row two every 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 shows the exemplary rectangular solar energy module 700 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 shows 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 with bypass diode 710 It is connected in parallel；In third group, second superbattery of upper eight row is connected in parallel with each other, and in parallel with bypass diode 715 Connection.This three groups of superbatteries are connected in series.Three bypass diodes are also connected in series.
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, One 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 in the lower every row of four rows has along module first Rear surface (just) terminal contacts on side and front surface (negative) terminal contacts along module centers line, the in the lower every row of four rows 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 to be touched along rear surface (just) end of module centers line Point and along the second side of module rear surface (negative) terminal contacts.
Front surface (negative) terminal contacts of third group superbattery are connected to each other by bus 720N, also by these terminal contacts It is connected to the plus end of bypass diode 705.Rear surface (just) terminal contacts of first group of superbattery are connected to by bus 725 Front surface (negative) terminal contacts, the negative terminal of bypass diode 705 and the anode of bypass diode 710 of second group of superbattery Son.Rear surface (just) terminal contacts of third group superbattery are connected to each other by bus 730P, also connect these terminal contacts To the negative terminal of bypass diode 715.Front surface (negative) terminal contacts of third group superbattery are connected to each other by bus 735, These terminal contacts are also connected to rear surface (just) terminal contacts of second group of superbattery, the negative terminal of bypass diode 710 The plus end of son 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 second group of superbattery in 735 can be fully located at superbattery behind.Bus 725 The interconnection of remainder, the remainder of bus 735 and bus 720N and/or this three and superbattery occupies table before module A part on face.
Bypass diode is contained in one or more terminal boxes in solar energy module rear surface by above-mentioned some examples. But this is not required.For example, some or all of bypass diode can be configured to around the periphery of solar energy module It is coplanar with superbattery, may be disposed in the gap between superbattery, also may be disposed at superbattery behind.Such In the case of, bypass diode can be (for example) arranged in the laminate structures for being wherein packaged with superbattery.Therefore, two are bypassed The position of pole pipe is dispersible, and bypass diode can take out from terminal box, this single terminal for helping to be separated with two connects Wire box replacement had not only included module plus end but also had included the center links box of module negative terminal, described two isolated single terminal wiring Box can be for example in the rear surface of solar energy module near the outer edge of solar energy module.This method overall reduction The length of the current path in the wiring between the current path and solar energy module in ribbon conductor in solar energy module, 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, mutually for the various electricity of solar energy module shown in Fig. 5 B and the circuit diagram with Figure 10 A Bypass diode 480 and two single terminal terminal boxes in superbattery laminate structures can be used in physical layout even 490P,490N.It, can cognitive map 15 well by Figure 15 with Figure 10 B-1 compared with Figure 10 B-2.Can similarly modify it is above-mentioned its His module placement.
The rectangle solar battery for reducing (area reduction) using above-mentioned electric current can be conducive to as just description in layer It closes and uses bypass diode in structure, the reason is that the function that the solar battery that electric current reduces dissipates in positive bias bypass diode Rate is smaller than use stock size solar battery in the case where the power that dissipates.Therefore, the solar energy mould of this specification description Bypass diode in block needs the heat distributed may be fewer than regular situation, so can move from the terminal box in module rear surface Out and move into laminate structures.
Single solar energy module may include interconnection piece, other conducting wires and/or bypass diode, and the bypass diode is supported Two or more electricity configurations, for example, supporting two or more above-mentioned electricity configurations.In such cases, for operating too The specific configuration of positive energy module can be selected for example from two or more alternative solutions using switch and/or wire jumper.It is different Configuration the superbattery of different number can be connected and/or in parallel, and provide voltage output by solar energy module and electric current is defeated Various combination out.Therefore, this solar energy module can be configured in factory or erecting bed from two or more It is selected in the different voltage and current combination of kind, for example, between high voltage low current configuration and low voltage and high current configuration It is 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 battery of stock size (for example, 156mm × 156mm or 125mm × It 125mm) cuts and/or cuts, obtain relatively narrow rectangle solar battery " item ".(referring also to such as Fig. 3 A to Fig. 3 E, and Relevant description above).The solar battery item optionally tested, then according to its current-voltage performance by its point Class.Current-voltage Performance Match or the battery of approximate match are advantageously used in the same superbattery, or are used for same row In the superbattery of series connection.For example, it may be possible to advantageously, be connected in series in a superbattery or in row's superbattery Battery generated under same irradiation condition matching or approximate match electric current.
In step 815, the conduction between the lap that solar battery adjacent in superbattery is set is utilized Solar battery 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, connect the conductive adhesive between the solar battery in superbattery Condensation material is cured or partially cured.In a kind of variations, after each additional solar battery is added to superbattery, First make the conduction between newly added solar battery and adjacent overlapping solar battery (being a part of superbattery) Property adhesive bond material solidification or partially cured, then add next solar battery to superbattery.In another modification It, can more than two solar batteries in overlap mode setting superbattery as needed first or whole solar-electricity in form Pond, then it is cured or partially cured conductive adhesive grafting material.The superbattery that the step obtains optionally is tested, so Classified afterwards according to its current-voltage performance.Current-voltage Performance Match or the superbattery of approximate match can be used advantageously In same row's superbattery, or in the same solar energy module.For example, it may be possible to which advantageously, electrical connection in parallel surpasses Grade battery or each row's superbattery generate the voltage of matching or approximate match under same irradiation condition.
In step 825, layered structure is arranged in by the superbattery that required module configuration will be cured or partially cured In and interconnected, (day side) plate and (optionally transparent) back plate before which includes encapsulating material, is transparent.Layering Structure may include the first layer encapsulant being (for example) located in glass substrate, the super electricity of interconnection being arranged into first layer encapsulant Pond (day side is downward), the second layer encapsulant on superbattery layer, and the back plate in second layer encapsulant.? Any other suitable arrangement can 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 battery of stock size is divided into solar battery Then conductive adhesive grafting material is applied on each individual solar battery item by item.In a kind of substitute variants shape In formula, first conductive adhesive grafting material is applied on the solar battery of stock size, then solar battery is divided into Solar battery item.
In curing schedule 820, conductive adhesive grafting material can be fully cured, can also be only partially cured.If only Partially cured, then conductive adhesive grafting material initially can partially cured in step 820 (cured degree be enough to facilitate shifting Dynamic 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 battery 10, these rectangle solar batteries 10 are arranged to the long side overlapping of adjacent solar battery as described above and pass It engages to the property led, and interconnection piece is joined to terminal contact in the opposite two ends of superbattery.
Figure 30 A shows electrical interconnection and is joined to the exemplary super of its front surface terminal contact and rear surface terminal contact Battery.The terminal edge that electrical interconnection is parallel to superbattery extends, and extends transverse to except superbattery, to promote and phase Adjacent superbattery is electrically interconnected.
Figure 30 B shows superbattery shown in two Figure 30 A of interconnected in parallel.Originally from the front of module in interconnection piece Visible part can be capped or dye (for example, deepen), with mitigate the interconnection piece perceived by the normal observer of colour vision with Visual contrast between superbattery.In the example shown in Figure 30 A, interconnection piece 850 is on one end (right side of attached drawing of superbattery Side) it is conductively joined to the front terminals contact of the first polarity (for example, -), another interconnection piece 850 is in superbattery The other end (left side of attached drawing) be conductively joined to opposite polarity rear terminal contact.Interconnection piece 850 and it is above-mentioned other Interconnection piece is similar, can (for example) by identical conductive adhesive grafting material used between solar battery conductively It is joined to superbattery, but this is not required.In the example shown in the series of figures, a part of each interconnection piece 850 is perpendicular to super Grade battery long axis (and the long axis for being parallel to solar battery 10) side extend up to superbattery 100 edge it Outside.As shown in figure 30b, this allows to be arranged side by side two or more superbatteries 100, makes the interconnection of one of superbattery Part 850 is overlapped and is conductively bonded on the correspondence interconnection piece 850 of adjacent superbattery, thus by two superbattery parallel connections It is electrically interconnected.850 interconnected in series of such interconnection piece that several had just been described, can form the bus of module.If for example, The full duration or overall length (for example, Fig. 5 B) of each superbattery extension of module, then this arrangement may be very applicable.In addition, mutually Even part 850 can also be used to for the terminal contact of two adjacent superbatteries in row's superbattery being electrically connected in series.It is similar to It is interconnection piece 850 in a row is Chong Die with the interconnection piece 850 in adjacent row and conductively engage shown in Figure 30 B, a row it is interior at Pair or more long string of such interconnection superbattery in parallel with the superbattery interconnected in a similar manner in adjacent row can be electrically connected It connects.
Interconnection piece 850 can be for example punched from conductive plate, be then optionally patterned, with increase its with it is super The edge-perpendicular of battery and the mechanical plasticity on the two parallel directions, to reduce or reconcile at the edge with superbattery On vertical and parallel direction because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery stress.This patterning can wrap It includes and (for example) forms slit, slit or hole (not shown).Interconnection piece 850 and its machine engaged with the one or more of superbattery Tool 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 850 can be by (for example) as described above for engaging the solar energy of overlapping The mechanical plasticity conductive bonding material of battery is joined to superbattery.Optionally, conductive bonding material can be only positioned at along super Multiple discrete positions of grade battery edge substantially extend the continuous lines of the length at superbattery edge without being formed, it is intended to subtract It is small or reconcile on the direction for being parallel to superbattery edge, because the thermal expansion coefficient of conductive bonding material or interconnection piece with it is super Stress caused by the coefficient of thermal expansion mismatch of battery.
Interconnection piece 850 can (for example) be cut from scale copper, if superbattery 100 is by area ratio standard silicon solar cell Small solar battery is formed, thus operating current is less than conventional current, then interconnection piece 850 may be interconnected than conventional conductibility Part is thin.For example, interconnection piece 850 can be by forming with a thickness of about 50 microns to about 300 microns of copper sheet.Interconnection piece 850 can be sufficiently thin And it is sufficiently flexible, to be similar to above-mentioned interconnection piece, the edge fold of the superbattery engaged around it to edge behind.
Figure 19 A to Figure 19 D shows several exemplary arrangement, when using these arrangements, applies heat during method 800 And pressure, so that it may make the conductive adhesive grafting material solidification or partially solid between solar battery adjacent in superbattery Change.Any other suitable arrangement can also be used.
In fig. 19 a, apply heat and local pressure, be cured or partially cured in a joint portion (overlapping region) every time Conductive adhesive grafting material 12.Superbattery can be supported by surface 1000, and can be for example with bar, pin or other machinery Contact is mechanically to apply pressure from upper direction joint portion.It can be or logical for example with hot-air (or other hot gas), infrared lamp The Mechanical Contact that local pressure is applied to joint portion by heating is crossed, applies heat to joint portion.
In fig. 19b, the arrangement of Figure 19 A is extended to simultaneously be applied to heat and local pressure multiple in superbattery The batch process at 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, Neng Gou Superbattery is able to melt at cured temperature.Release liner 1015 can be formed for example by glass fibre and PTFE, solidified Superbattery is not reattached to after journey.Preferably, release liner 1015 by thermal expansion coefficient and solar battery thermal expansion Coefficient (for example, CTE of silicon) matching or substantially matched material are formed.If this is because the CTE and the sun of release liner The CTE difference of energy battery is too big, then solar battery and release liner can extend different amounts in the curing process, this often exists Superbattery is pulled apart along longitudinal direction at joint portion.Vacuum capsule 1005 is covered on the arrangement above.Such as pass through 1000 He of heating surface Board 1010, and uncured superbattery is heated from below, then vacuumized between capsule 1005 and support surface 1000. Therefore, hydrostatic pressure is applied to superbattery by the thermoplastic sheet 1020 melted by vacuum capsule 1005.
In Figure 19 D, uncured superbattery transports through baking oven 1035, baking oven 1035 by porous mobile band 1025 Superbattery is heated.Solar battery 10 is pulled into mobile band by the vacuum that the perforation in band applies, thus to electricity Joint portion between pond applies pressure.Conductive adhesive during superbattery passes through baking oven, in these joint portions Grafting material solidification.Preferably, porous belts 1025 matched by CTE with the CTE (for example, CTE of silicon) of solar battery 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 battery, then the sun Energy battery and porous belts can extend different amounts in baking oven 1035, this often along longitudinal direction pulls superbattery at joint portion It is disconnected.
The method 800 of Figure 17 includes the steps that the step of different solidification superbatteries and lamination superbattery, thus produces The intermediate products of superbattery are given birth to.In contrast, method 900 shown in Figure 18 will solidify the step of superbattery and lamination The step of superbattery, is combined.In step 910, by the solar battery of stock size (for example, 156mm × 156mm, Or 125mm × 125mm) cut and/or cut, obtain relatively narrow rectangle solar battery item.Optionally test obtains Solar battery item, is then classified.
In step 915, is configured by required module and solar battery item is arranged in layered structure, the layered structure Including encapsulating material, it is transparent before (day side) plate and back plate.Utilize the weight that solar battery adjacent in superbattery is set Solar battery item, is arranged to superbattery by the uncured conductive adhesive grafting material between folded part.(can for example it lead to Ink jet printing or silk-screen printing are crossed to apply conductive adhesive grafting material).Then interconnection piece is arranged, configuration as needed will Uncured superbattery is electrically interconnected.Layered structure may include the first layer encapsulant being (for example) located in glass substrate, arrangement Interconnection superbattery (day side is downward) on to first layer encapsulant, the second layer encapsulant on superbattery layer, with 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 connects Condensation material solidification, to form cured laminate structures.For the conductive adhesive of interconnection piece engagement to superbattery is connect Condensation material can also solidify in this step.
In a kind of variations of method 900, the solar battery of stock size is divided into solar battery item, then Conductive adhesive grafting material is applied on each individual solar battery item.In a kind of substitute variants form, first Conductive adhesive grafting material is applied on the solar battery of stock size, then solar battery is divided into solar-electricity Pond item.For example, the solar battery of multiple stock sizes can be placed on large form, conducted then to being distributed on solar battery Property adhesive bond material, while solar battery is divided into solar battery item with large-scale jig.Obtained solar battery Item 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 battery of stock size, then solar battery is divided into solar battery item.By the sun of stock size When energy battery is divided and forms solar battery, conductive adhesive grafting material is uncured (that is, still " humidity ").At this A little variations it is some in, conductive adhesive grafting material is applied on the solar battery of stock size (for example, borrowing Help ink jet printing or silk-screen printing), it is then carved and is drawn on the solar cell using laser, carved line drawing with these and limit solar energy Battery will be cut to form the position of solar battery item, and then edge carves line drawing and cuts solar battery.In these modifications In form, the distance between laser power and/or quarter line drawing and adhesive bond material may be selected, to avoid laser production Raw heat is incidentally cured or partially cured conductive adhesive grafting material.In other variations, laser is used It carves and draws on the solar battery of stock size, carving line drawing restriction solar battery with these will cut to form solar-electricity The position of pond item, then conductive adhesive grafting material is applied on solar battery (for example, by ink jet printing or Silk-screen printing), then solar battery is cut along quarter line drawing.It formerly carves in the variations drawn, it may be preferred to complete At during the step of applying conductive adhesive grafting material, the solar battery carved and drawn incidentally will not be cut or destroyed.
Referring again to Figure 20 A to Figure 20 C, Figure 20 A schematically shows the side view of example devices 1050, this sets It is standby can be used to cut applied conductive adhesive grafting material draw solar battery at quarter.It (executes to carve and draws and apply conduction Property adhesive bond material the two steps sequencing may be different).In the device, conductive adhesive has been applied to connect It condensation material and has carved the stock size solar battery 45 drawn the curved of vacuum manifold 1070 is conveyed through by porous mobile band 1060 Bent portions.It, will too by the vacuum that the hole in band applies when solar battery 45 passes through above the bending part of vacuum manifold The bottom surface of positive energy battery 45 pulls to vacuum manifold, thus is bent solar battery.Vacuum manifold bending part may be selected Radius of curvature R, in order that in this way be bent solar battery 45 when, solar battery along carve line drawing cutting.Using The benefit of this method is, it is not necessary to the top surface for having applied conductive adhesive grafting material of contact solar cell 45, With regard to cleavable solar battery 45.
If preferably starting to cut (that is, an edge of solar battery 45) at the one end for carving line drawing, Using the equipment 1050 of Figure 20 A, by will (for example) carve line drawing be arranged to vacuum manifold orientation into θ angle 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.As shown in fig. 20b, For example, can be orientated to solar battery, it carves line drawing and the direction of travel of porous belts is at an angle, while manifold being orientated to It is vertical with the direction of travel of porous belts.For another example, Figure 20 C show battery be oriented to its carve line drawing perpendicular to porous belts traveling Direction, at the same 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 draw the sun at quarter Energy battery, and form the solar battery 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 battery.In such situation Under, preferably roller only not yet applies on solar battery top surface contacts in the region of conductive adhesive grafting material The top surface.
In some variations, solar energy module includes being arranged to plurality of rows of surpass in white in other words reflexive back plate Grade battery, therefore not absorbed by solar battery initially then can be anti-by back plate across a part of solar radiation of solar battery It is emitted back towards solar battery, to generate electric power.Gap across each row's superbattery may can see reflexive back plate, This, which can lead to solar energy module and has looked like multiple rows of parallel bright line (for example, white line), extends through its front surface.For example, with reference to Fig. 5 B, if superbattery 100 is disposed in white back plate, then the parallel concealed wire that extends between each row's superbattery 100 White line may be looked like.Solar energy module is in some occasions in use, for example, in use, this phenomenon may on roof It causes unsightly.
Referring to fig. 21, for the aesthetic effect for improving solar energy module, it includes dark fringe 1105 that some variations, which use, White back plate 1100, the location of these dark fringes correspond between each row's superbattery that will be arranged in back plate Gap.Striped 1105 is sufficiently wide, so that can't see back plate through the gap between each row's superbattery in assembled module On white portion.Which reduce by the visual contrast between the normal observer of the colour vision superbattery perceived and back plate. So the appearance of front surface still can be similar to for example shown in Fig. 5 A to Fig. 5 B although obtained module includes white back plate The front surface appearance of module.Dark fringe 1105 can be formed (for example) with multistage dark strip, it is also possible to any other suitable side Formula is 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.
In order to utmostly mitigate the serious consequence that these hot spots may cause, it is common practice to two poles of insertion bypass Pipe, a part as module.The maximum quantity of battery between bypass diode is set, for limiting the maximum temperature of 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 battery item and thin heat-conductive bonding agent being cut into are covered, and improve solar-electricity Thermo-contact between pond.Since thermo-contact enhances, so thermal diffusion degree is higher than traditional interconnection technique.It is each in conventional design Bypass diode can only at most act on 24 or less than 24 solar batteries, in contrast, using based on this of stacking Thermal diffusion design, each bypass diode can act on more long string of solar battery.According to multiple embodiments, due to covering Thermal diffusion is promoted, no longer needs so much bypass diode accordingly, this can provide one or more benefits.For example, due to not It needs to provide a large amount of bypass diodes again, so the module placement of solar battery string length multiplicity can be formed.
According to multiple embodiments, thermal diffusion is realized with the physical engagement of adjacent cell with thermal bonding by maintaining.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 with The length of segmented version extension solar battery.According to embodiment, the thickness at this joint portion can be about 200 microns or smaller, About 150 microns or smaller, about 125 microns or smaller, about 100 microns or smaller, about 90 microns or smaller, about 80 microns or more Small, 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 to install longer battery strings (for example, more than 24 batteries), makes the design of solar battery and module more Flexibly.For example, battery strings of some embodiments using the cutting solar battery assembled in a manner of covering.Such configuration it is every A 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 battery In the case where 1/6, the bypass diode number in each module will be 6 in conventional module (not cutting battery composition by 3) Times, add up 18 diodes.Therefore, thermal diffusion substantially reduces bypass diode number.
In addition, needing bypass circuit to carry out completion bypass circuit diameter for each bypass diode.Each diode needs Two interconnection points are wanted, and are connected to the conducting wire wiring of these interconnection points.This forms complicated circuit, causes and the assembling sun The associated standard layout of energy module generates high cost.
In contrast, each module only needs a bypass diode, even entirely without side using thermal diffusion technology Road diode.This arrangement simplifies module assembled process, allow to execute layout manufacture step using simple automation tools Suddenly.
Since a bypass protection is just arranged without 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.It is this 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 except in addition to providing thermal diffusion, additionally it is possible to reduce in solar battery and consume Thus the intensity of scattered electric current improves hot spot performance.In particular, during hot spot state, the electricity that dissipates in solar battery Flow depends on cell area.
Battery can be divided into lesser region due to covering construction, so, flow through a battery in hot spot state The magnitude of current be division size function.During hot spot state, (usually LITHIUM BATTERY is lacked in current flowing resistance minimum path Fall into interface or grain boundary).It is beneficial to reduce this electric current, can utmostly reduce the wind of reliability failures under hot spot state Danger.
Figure 22 A shows plan view when being in hot spot state using the conventional modules 2200 of conventional band connection 2201. Herein, the masking 2202 on a battery 2204 causes hot localized clusters in single battery.
In contrast, Figure 22 B shows plan view when being also at hot spot state using the module of thermal diffusion.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 the benefit for reducing dispersion current is at double for polycrystalline solar cell.It is known this When class polycrystalline battery is under hot spot state, since there are high-grade defect interfaces, therefore performance is poor.
As described above, specific embodiment can be constructed using the stacking of chamfering cutting battery.In such cases, along each Closing line between battery and adjacent cell reflects thermal diffusion advantage.
This increases to the bonding length of each overlapping j oint to greatest extent.Since joint portion is that heat from battery is diffused into electricity The major interfaces in pond obtain optimal thermal diffusion effect so this length is increased to and can ensure that greatest extent.
Figure 23 A shows an example of the layout of the superbattery string with chamfering battery 2,302 2300.In this construction, 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 of its conducting path longest for arriving next battery.
Figure 23 B shows 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 facing each other of chamfering battery.This leads to the conducting path at joint portion There are two length: 125mm and 156mm.
In the case where 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 shows the thermal diffusion in the superbattery of the chamfering battery with facing each other.
It is described above be absorbed in multiple solar batteries are assembled in a manner of stacking on a common substrate (can be to cut out Solar battery).This results in the module with single electrical interconnection-terminal box (or j-box).
However, need to usually install the multiple this moulds fitted together in itself to collect enough solar energy to be used Block.According to multiple embodiments, multiple solar cell modules can also be used stacking mode and assemble, to promote the area effect of array Rate.
In certain embodiments, the feature of module may be to have top conduction weldering on the direction towards solar energy Band, 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, the exposure of top welding, it is possible that incident light can be stopped, so negatively affect efficiency.
According to multiple embodiments, module itself can be covered, so that top welding is covered by adjacent module.Figure 24 is shown The simplification viewgraph of cross-section of this arrangement 2400, wherein the end 2401 of adjacent block 2402 is used to the top with current block 2406 Portion's welding 2404 is overlapped.Each module itself includes multiple stacking formula solar batteries 2407.
It is buried in the bottom welding 2408 of current block 2406.Bottom welding 2408 is located at raising for current stacking formula module Side, so as to Chong Die with next adjacent stacking formula module.
This stacking formula module construction can also provide additional areas for installing other elements, without unfavorable in module The final exposed area of ground influence module array.The example for the module component that may be provided in overlapping region may include (but unlimited In) terminal box (j-box) 2410 and/or bus welding.
Figure 25 shows another embodiment of stacking formula module construction 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 Wiring is eliminated, 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 produce integrated tilt module roof mounting rack solution, and wherein the size of terminal box determines gradient. To the array for covering formula module to be mounted on roofdeck, 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 the total of module Length (therefore, shortens the length of exposure L generated due to stacking), and mould can be used in the case where no additional frame component Block.By shortening the total length of module, the module of canted arrays can be in expected physical load (for example, the snow load of 5400Pa The lotus 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 specific length specified by physical load and other requirements.
Figure 26 shows the schematic diagram on rear (in the shade side) surface of solar energy module, shows stacking formula superbattery in figure Before terminal box on terminal electric contact to rear side on (day side) surface exemplary electrical interconnection.Stacking formula superbattery Front surface terminal contact can be located at module edge near.
Figure 26 shows using flexible interconnection 400 the front surface terminal contacts for being electrically connected superbattery 100.It is illustrating Example in, flexible interconnection 400 include band-like portions 9400A and finger-shaped material 9400B, wherein band-like portions 9400A is super The end of battery 100 is nearby parallel to end extension, and finger-shaped material 9400B extends perpendicular to band-like portions, and and superbattery End solar battery in its conductively engage front surface metallization pattern (not shown) contact.Conductively it is joined to The ribbon conductor 9410 of interconnection piece 9400 passes through in 100 behind of superbattery, for interconnection piece 9400 to be electrically connected to super electricity Pond 100 constitute in the rear surface of part thereof of solar energy module electrical components (for example, bypass diode in terminal box and/ Or module terminals).Insulating film 9420 may be provided between conducting wire 9410 and the edge and rear surface of superbattery 100, and being used for will Ribbon conductor 9410 and superbattery 100 are 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 Yu 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 The edge-perpendicular of battery and the mechanical plasticity on the two parallel directions, to reduce or reconcile at the edge with superbattery On vertical and parallel direction because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery stress.This patterning can wrap It includes and (for example) forms slit, slit or hole (not shown).It interconnection piece 400 and its is answered with the mechanical plasticity of the engagement of superbattery It is sufficiently large, so that being connected in lamination process and (being described in more detail) for superbattery can draw because of CTE mismatch It is remained intact under the stress risen.Interconnection piece 400 can be by (for example) as described above for engaging the machinery of the solar battery of overlapping Plasticity conductive bonding material is joined to superbattery.Optionally, conductive bonding material can be only positioned at along superbattery edge Multiple discrete positions (for example, correspond to end solar battery discrete engagement pad multiple positions), without formed essence The continuous lines of the upper length for extending superbattery edge, it is intended to reduce or reconciles on the direction for being parallel to superbattery edge, The stress because of caused by the coefficient of thermal expansion mismatch of the thermal expansion coefficient and superbattery of conductive bonding material or interconnection piece.
Interconnection piece 400 can (for example) be cut from scale copper, if superbattery 100 is by area ratio standard silicon solar cell Small solar battery is formed, thus operating current is less than conventional current, then interconnection piece 400 may be interconnected than conventional conductibility Part is thin.For example, interconnection piece 400 can be by forming with a thickness of about 50 microns to about 300 microns of copper sheet.Interconnection piece 400 can be sufficiently thin, Even if as described above patterning, can also reconcile in the edge-perpendicular of superbattery and parallel direction because of interconnection piece CTE and superbattery CTE mismatch caused by stress.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, and two in parallel or more are shown in figure The exemplary electrical of multiple stacking formula superbatteries interconnects, and wherein the terminal electric contact before superbattery on (day side) surface connects 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 module Adjacent edges.
Figure 27 shows using two rigid flexible interconnections 400 described and forms 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 part is 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, and two in parallel or more are shown in figure Another exemplary electrical of multiple stacking formula superbatteries interconnects, wherein the terminal electricity touching before superbattery on (day side) surface Point 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 Near module edge.
Figure 28 shows using another example flexible interconnection piece 9440 front surface for being electrically connected superbattery 100 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 is parallel to end extension near the end of superbattery 100；Finger-shaped material 9440B hangs down Directly extend in band-like portions, and the front surface metallization figure conductively engaged with its in the end solar battery of superbattery The contact of case (not shown)；Finger-shaped material 9440C extends perpendicular to band-like portions, and is located at superbattery behind.Finger-shaped material 9440C is passed The property led it is joined to bus 9450.Bus 9450 is flat along the rear surface of superbattery 100 near the end of superbattery 100 Row extends in the end of superbattery 100, and may extend away to be Chong Die with the adjacent superbattery that it can be likewise electrically connected to, To which superbattery is connected in parallel.The ribbon conductor 9410 for being conductively joined to bus 9450 arrives superbattery electrical interconnection Electrical components (for example, bypass diode and/or module terminals in terminal box) in solar energy module rear surface.Electrical insulating film It 9420 may be provided between finger-shaped material 9440C and the edge and rear surface of superbattery 100, bus 9450 and superbattery 100 Rear surface between and ribbon conductor 9410 and the rear surface of superbattery 100 between.
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, thus reduction or reconciliation on the side with superbattery On the perpendicular and parallel direction of marginal lappet because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery stress.This patterning can Including (for example) forming slit, slit or hole (not shown).Interconnection piece 9440 and its with the engagement of superbattery machinery it is plastic Property is sufficiently large, so that being connected in lamination process and (being described in more detail) for superbattery can be because of CTE mismatch Caused by remain intact under stress.Interconnection piece 9440 can be by (for example) as described above for engaging the solar battery being overlapped Mechanical plasticity conductive bonding material is joined to superbattery.Optionally, conductive bonding material can be only positioned at along superbattery Multiple discrete positions (for example, the multiple positions for corresponding to the discrete engagement pad of end solar battery) at edge, without being formed Substantially extend the continuous lines of the length at superbattery edge, it is intended to reduce or reconcile in the direction for being parallel to superbattery edge On, the stress because of caused by the coefficient of thermal expansion mismatch of the thermal expansion coefficient and superbattery of conductive bonding material or interconnection piece.
Interconnection piece 9440 can (for example) be cut from scale copper, if superbattery 100 is by area ratio standard silicon solar electricity The small solar battery in pond is formed, thus operating current is less than conventional current, then interconnection piece 400 may be more mutual than conventional conductibility Even part is thin.For example, interconnection piece 9440 can be by forming with a thickness of about 50 microns to about 300 microns of copper sheet.Interconnection piece 9440 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.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 which (such as perpendicular to superbattery 100) is curved The bent rear surface far from superbattery 100.Later, finger-shaped material 9440C is flexible and prolong along the rear surface of superbattery 100 It stretches, as shown in figure 28.
Figure 29 shows the partial cross-section perspective view of two superbatteries, and use is shown in figure and is clipped in adjacent super electricity Superbattery is electrically connected in series and electrical connection is supplied to terminal box by the flexible interconnection between the overlapped ends in pond.Figure 29A shows the enlarged view of area of interest in Figure 29.
Figure 29 and Figure 29 A shows 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, so that it is mutual that superbattery is connected Even.In the example shown in the series of figures, it is hidden due to interconnection piece 2960 by the top for the solar battery that two are overlapped, so from solar energy The front of module is invisible.In another variations, the adjacent end portion of two superbatteries is not overlapped, so interconnection piece The part of the front surface terminal contacts of one of two superbatteries is connected in 2960 can be with from the front surface of solar energy module See.Optionally, in such variations, it can be capped or dye from the visible part in the front of module originally in interconnection piece (for example, intensification), to mitigate the visual contrast between the interconnection piece and superbattery that are perceived by the normal observer of colour vision.Mutually The neighboring edge that even part 2960 can be parallel to two superbatteries extends to except the side edge of superbattery, thus by 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 adjacent of two superbatteries End is electrically connected to the electrical components in solar energy module rear surface (for example, bypass diode and/or module end in terminal box Son).In another variations (not shown), it is upper separate that ribbon conductor 2970 may be electrically connected to one of superbattery of overlapping The rear surface contact of its overlapped ends, without conductively being engaged with interconnection piece 2960.The construction can also be by hiding tap The one or more bypass diodes being supplied in solar energy module rear surface or other electrical components.
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, thus reduce or reconcile with super electricity In the edge-perpendicular in pond and parallel direction because of caused by the CTE mismatch of the CTE of interconnection piece and superbattery stress.It is this Patterning may include (for example) forming slit, slit (as shown in the figure) or hole.Flexible interconnection and its engagement with superbattery Mechanical plasticity be sufficiently large so that (be described in more detail) in lamination process can be for the superbattery of interconnection It is remained intact under the stress because of caused by CTE mismatch.Flexible interconnection can be by (for example) as described above for engaging overlapping too The mechanical plasticity conductive bonding material of positive energy battery is joined to superbattery.Optionally, conductive bonding material can be only positioned at edge Multiple discrete positions at superbattery edge, without formed substantially extend superbattery edge length continuous lines, purport Reduce or reconcile on the direction for being parallel to superbattery edge, because the thermal expansion coefficient of conductive bonding material or interconnection piece with Stress caused by the coefficient of thermal expansion mismatch of superbattery.Interconnection piece 2960 can (for example) be cut from scale copper.
Embodiment may include one or more features described in following US patent publication: No. 2014/ 0124013 U.S. Patent Publication；With No.2014/0124014 U.S. Patent Publication, this two patents are announced with the side of reference Formula is incorporated by herein, with for all purposes.
Subject description discloses the high-efficiency solar modules including silicon solar cell, and the silicon solar cell is to cover Mode is arranged and is electrically connected in a series arrangement, to form superbattery, wherein superbattery is arranged in solar energy module At the row of physical parallel.For example, the length of superbattery can substantially overall length or overall with across solar energy module, alternatively, Two or more superbatteries can be arranged to end-to-end in a row.This arrangement conceals the electricity between solar battery Interconnection piece, and therefore can be used to form the solar energy module with visual attraction, wherein the adjacent series connection sun Can there are very little difference or no difference between battery.
Superbattery may include any amount of solar battery, 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 the centre of superbattery Electric contact at position may need for superbattery electricity to be segmented into the segmentation of two or more series connections, and maintain simultaneously The continuous superbattery of physics.Subject description discloses some arrangements, wherein to one or more silicon sun in superbattery The back surface engagement pad of energy battery carries out such electrical connection, in order to provide electricity tap invisible before solar energy module Point, and therefore it is referred to herein as " hiding tap ".Hiding tap is the back side and the conductibility of solar battery Electrical connector between interconnection piece.
This specification is also disclosed front surface superbattery termination contact pad, the super electricity of rear surface using flexible interconnection Pond termination contact pad or hiding tap engagement pad are electrically interconnected to other electricity in other solar batteries or solar energy module Component.
In addition, subject description discloses use electroconductive binder directly to engage adjacent solar battery in superbattery To each other, the mechanical compliance in order to provide the thermal expansion mismatch between reconciliation superbattery and the glass front plate of solar energy module is led Electrically engagement is used in combination electroconductive binder and is engaged by mechanical rigid by flexible interconnection engagement to superbattery, the machine Tool positive engagement forces the thermal expansion mismatch between flexible interconnection reconciliation flexible interconnection and superbattery.This avoid can The solar energy module damage that can occur by the thermal cycle of solar energy module.
As described further below, can be used to being electrically connected for hiding tap engagement pad by the segmentation of superbattery It is electrically connected with the corresponding segments parallel connection of one or more superbatteries in adjacent row, and/or is directed to various applications, including but not It is limited to power optimization (for example, the micro- inverter of bypass diode, AC/DC, DC/DC converter) and reliability application, will be electrically connected Solar energy module circuit is provided.
Substantially completely black appearance is provided for solar energy module by combining hiding intercell connection, is made as just mentioned The aesthetic appearance of solar battery can be further enhanced with hiding tap, and by allowing Modular surface region more Most of effective coverage by solar battery is filled, and can also be improved the efficiency of solar energy module.
Turning now to attached drawing, to understand solar energy module described in this specification in more detail, Fig. 1 show with The viewgraph of cross-section for a string of solar batteries 10 that stacking mode arranges, is connected in series, the wherein end of adjacent solar battery It is overlapped and is electrically connected, to form superbattery 100.Each solar battery 10 includes semiconductor diode structure and connection To the electric contact of semiconductor diode structure, the electric current that solar battery 10 wherein generates when being irradiated by light can be touched by these electricity It puts and is supplied to external loading.
In the example of this specification description, each solar battery 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 is 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 figures Case provides electrical contact for the opposite sides of n-p junction.However, if applicable, other materials system, diode junction can be used Structure, physical size or electrical contact arrangement.For example, preceding (day side) surface metalation pattern may be provided at, p-type is conductive partly to be led On body layer, rear (in the shade side) surface metalation pattern be may be provided on the conductive semiconductor layer of n type.
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 front surface of a solar battery Metallization 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.
Figure 31 AA and Figure 31 A show the use of example flexible interconnection piece 3160, and the flexible interconnection is 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 the example shown, Due to being hidden by the top for the solar battery that two are overlapped, interconnection piece 3160 is not seen before solar energy module. In another variations, the adjacent end portion of two superbatteries is not overlapped, so being connected to two in interconnection piece 3160 The part of the front surface terminal contacts of one of superbattery can see from the front surface of solar energy module.Optionally, herein In class variations, it can be capped or dye (for example, intensification) from the visible part in the front of module originally in interconnection piece, to subtract The visual contrast between interconnection piece and superbattery gently perceived by the normal observer of colour vision.Interconnection piece 3160 can be parallel to The neighboring edge of two superbatteries extends to except the side edge of superbattery, thus by pairs of superbattery with similarly The pairs of superbattery parallel connection electrical connection being arranged in adjacent row.
Ribbon conductor 3170 can conductively be joined to interconnection piece 3160 as shown in the figure, by the adjacent of two superbatteries End is electrically connected to the electrical components in solar energy module rear surface (for example, bypass diode and/or module end in terminal box Son).In another variations (not shown), it is upper separate that ribbon conductor 3170 may be electrically connected to one of superbattery of overlapping The rear surface contact of its overlapped ends, without conductively being engaged with interconnection piece 3160.The construction can also be by hiding tap The one or more bypass diodes being supplied in solar energy module rear surface or other electrical components.
Fig. 2 shows the exemplary rectangular solar energy module 200 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 It is parallel to the long side orientation of module.The solar energy module of like configurations may also comprise the superbattery of this side length, 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, and wherein their long side is parallel to The short side of module is orientated.In other other arrangements, each row may include two or more super electricity of series electrical interconnection Pond.Module can have the short side that length is for example, about 1 meter and the long side that length is for example, about 1.5 to about 2.0 meters.It can also Any other suitable shape (for example, square) and size are selected for solar energy module.
Each superbattery in this example includes 72 rectangle solar batteries, the width of each rectangle solar battery It is substantially equal to the 1/6 of the width of 156mm square or pseudo-square wafers.Can also be used any other it is appropriate number of have appoint The what rectangle solar battery of his suitable dimension.
Length-width ratio is big, area be less than standard 156mm × 156mm solar battery long and narrow solar battery (such as figure institute Show) it is advantageously used for reducing the I in solar cell module disclosed in this specification2The loss of R resistive power.Specifically Ground is said, since the silicon solar cell of the area comparison with standard size of solar battery 10 reduces, so solar battery generates Electric current reduce, to directly reduce the resistive power damage in the series-connected battery string of solar battery and such solar battery Consumption.
It is, for example, possible to use the edge parts for being conductively joined to the back surface metallization pattern for being only located at solar battery Point one or more of the electrical interconnection of hiding tap engagement pad be connected to hiding for superbattery back surface to make Tap.Alternatively, the whole length substantially along solar battery can be used (perpendicular to the long axis of superbattery) Extend and be conductively joined to along the length of solar battery be distributed in back surface metallization pattern it is multiple hide The interconnection piece of tap engagement pad make hiding tap.
Figure 31 A shows the exemplary solar cell back table for being suitble to the hiding tap connecting with edge to be used together Face metallization pattern 3300.Metallization pattern includes continuous aluminium electric contact 3310, is arranged to and solar battery back surface The parallel and neighbouring multiple silver-colored engagement pads 3315 of long side edge and be respectively arranged to in the short side of solar battery back surface The hiding tap engagement pad 3320 of the parallel silver of one neighboring edge.When solar battery is arranged in superbattery When, engagement pad 3315 is Chong Die with the front surface of adjacent rectangle solar battery and is directly connectcted to the front surface.Interconnection piece It can be conductively joined to one or the other in hiding tap engagement pad 3320, it is hidden to be provided for superbattery The tap of hiding.(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 battery Long side passes through back surface cell metallization and reaches interconnected polymerization point (contact 3320).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 shows hiding point being suitble to the length along solar battery back surface using total linear interconnection piece Another exemplary solar cell back surface metallization pattern 3301 that connector is used together.Metallization pattern includes continuous Aluminium electric contact 3310 is arranged to the multiple silver-colored engagement pads parallel and neighbouring with the long side edge of solar battery back surface It 3315 and is arranged parallel to substantially occupy on the long side back surface in a row and in solar battery of solar battery In the hiding tap engagement pads 3325 of multiple silver.The interconnection piece extended substantially along the whole length of solar battery can be with It is joined to hiding tap engagement pad 3325, conductively to provide hiding tap for superbattery.It flows to hiding The electric current of tap pass principally through total linear interconnection piece so that the electric conductivity of back surface metallization pattern is for hiding Tap is less important.
The position for the hiding tap engagement pad that hiding tap interconnection piece on solar battery back surface is engaged Set the electric current road that will affect back surface metallization across solar battery, hiding tap engagement pad and interconnection piece with quantity The length of diameter.Therefore, the arrangement of hiding tap engagement pad can be selected, so as to lead to and pass through point hidden The resistance of electric current collection in the current path of connector interconnection piece minimizes.In addition to Figure 31 A to Figure 31 B (and is discussed herein below Figure 31 C) shown in configure except, suitably hiding tap engagement pad arrangement may also include such as two-dimensional array and with too The vertical row of the long axis of positive energy battery.In the latter case, for example, the position of the hiding tap engagement pad of this row can be with the The short edge of one solar battery is adjacent.
Figure 31 C shows the hiding tap for being suitble to connect with edge or the length along solar battery back surface Another exemplary solar cell back surface metallization figure being used together using the hiding tap of total linear interconnection piece Case 3303.Metallization pattern includes continuous copper-braid contact pad 3315, is arranged to the long side side with the back surface of solar battery Edge is parallel and neighbouring；Multiple copper finger-shaped materials 3317 are connected to engagement pad 3315 and extend vertically from the engagement pad；And The tap engagement pad 3325 of the total line concealing of Continuous Copper, the long side for being parallel to solar battery extend and in solar battery Back surface on be substantially centered.The interconnection piece of edge connection can be joined to the end of copper bus 3325, to be superbattery Hiding tap is provided.(if desired, two such interconnection pieces can be used, at the either end of copper bus 3325 to mention For two hiding taps).Alternatively, the interconnection piece extended substantially along the whole length of solar battery can conduct It is joined to property copper bus 3325, to provide hiding tap for superbattery.
It can be any by welding, soldering, conductive adhesive or use for forming the interconnection piece of hiding tap Other suitable modes are joined to the hiding tap engagement pad in back surface metallization pattern.For such as Figure 31 A to Figure 31 B Shown in using silver pad metallization pattern for, interconnection piece can be formed for example by tin-coated copper.Another method is using shape The aluminum conductor engaged at aluminium to aluminium directly forms hiding tap to aluminum back surface contact 3310, this can for example pass through electricity Or laser welding, soldering or conductive adhesive are formed.In certain embodiments, contact may include tin.As just mentioned In the case of, the back surface metallization of solar battery will lack silver-colored engagement pad 3320 (Figure 31 A) or 3325 (Figure 31 B), but edge Connection or total linear aluminium interconnection piece can be joined to aluminium (or tin) contact 3310 at the position for corresponding to these engagement pads.
Hiding tap interconnection piece (or interconnection piece with front surface or rear surface superbattery terminal contact) and silicon The stress obtained on different heat expansion and solar battery and interconnection piece between solar battery can lead to rupture and other Failure mode, so as to reduce the performance of solar energy module.Therefore, it is necessary to configure the tap hidden and other interconnection pieces At reconciling 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) formed, by low coefficient of thermal expansion materials (for example, Covar (Kovar), invar alloy (Invar) or its His low thermal coefficient of expansion iron-nickel alloy) formed, or by with substantially matching silicon thermal expansion coefficient, incorporate reconciliation interconnection piece Geometry expansion characteristics (such as, slit, groove, hole or truss knot in the plane of different heat expansion between silicon solar cell Structure) and/or using reconcile such different heat expansion the outer geometrical characteristic of plane (such as, kink, bump or scrobicula) material It is formed, interconnection piece can provide stress and thermal expansion is eliminated.It is joined to hiding tap engagement pad and (or is joined to super electricity To can have for example, less than about 100 micro- for the part of interconnection piece pond front surface or rear surface termination contact pad, as described below) Rice, 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 reference label 400A-400U instruction, the interconnection piece configuration uses stress elimination geometrical characteristic, and can be suitable as point for hiding The interconnection piece of connector or for being electrically connected with front surface or rear surface superbattery terminal contact.The length of these interconnection pieces It is usually substantially equal to the length of the long side for the rectangle solar battery that they are engaged, but they can have any other properly Length.Exemplary interconnection piece 400A to 400T shown in Fig. 7 A eliminates feature using various plane stress.In Fig. 7 B-1 Plane in exemplary interconnection piece 400U shown in outer (x-z) view of the plane of (x-y) view and Fig. 7 B-2 by turn of bilge 3705 Feature is eliminated as the plane external carbuncle in metal strip.The nominal extensional rigidity of the reduction metal tape of turn of bilge 3705.Turn of bilge allows Carrying material local buckling, rather than only extended when the band bears tension.For thin welding, this can make nominal tension Rigidity substantially reduces such as 90% or more.The definite measurement that nominal extensional rigidity is reduced is certainly in a number of factors, including turn of bilge The thickness of quantity, the geometry of turn of bilge and band.Interconnection piece can also will eliminate feature and combine in plane with plane external carbuncle It uses.
Figure 37 A-1 to Figure 38 B-2 being discussed further below show using in plane and/or plane external carbuncle eliminate geometry 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 connection each arrangement of conductors quantity needed for hiding tap, can use hiding Tap interconnection bus.The tap that this method is hidden adjacent superbattery by using hiding tap interconnection piece Engagement pad is connected to each other.(electrical connection is usually just arrived just or negative, that is, the polarity of every one end is identical).
For example, Figure 32 is shown: the first hiding tap interconnection piece 3400, substantially along in the first superbattery 100 Solar battery 10 entire width extend and be conductively joined to the hiding tap being arranged to as shown in figure 31b Head engagement pad 3325；And the second hiding tap interconnection piece 3400, the correspondence in superbattery 100 in adjacent row The entire width of solar battery extends and is similarly conductively joined to hiding point being arranged to as shown in figure 31b Junction contacts pad 3325.Two interconnection pieces 3400 are arranged to each other in a straight line and optionally adjacent to each other or overlapping, and And can conductively be joined to and be electrically connected each other or otherwise, with formed two adjacent superbatteries are interconnected it is total Line.As needed, this scheme can extend on other rows (for example, all rows) of superbattery, include several phases to be formed The solar energy module of adjacent superbattery segmentation is segmented in parallel.Figure 33 shows the perspective of a part of the superbattery in Figure 32 Figure.
Figure 35 shows the example that the superbattery in adjacent row is interconnected by short interconnection piece 3400, the short interconnection piece Across the gap between superbattery, and conductively it is joined to the hiding tap engagement pad on a superbattery 3320 and another superbattery on another hiding tap engagement pad 3320, wherein engagement pad is arranged to such as Figure 32 It is shown.Figure 36 shows similar arrangement, wherein short interconnection piece crosses over the gap between two superbatteries in adjacent row, and passes It is joined to the property led the end of the center copper bus portion of the back surface metallization on a superbattery and another is super The adjacent end portion of the center copper bus portion of the back surface metallization of battery, wherein copper back surface metallization are configured to such as figure Shown in 31C.In the two examples, as needed, interconnection scheme can be on other rows (for example, all rows) of superbattery Extend, is segmented in parallel with forming the solar energy module including several adjacent superbatteries segmentations.
Figure 37 A-1 to Figure 37 F-3 shows 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 plane is solar battery back surface metalation 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 planes The protruding portion 3400A and 3400B on opposite sides of internal stress elimination feature.It includes one that exemplary planar internal stress, which eliminates feature, A, two or more open diamonds shapes, the arrangement of zigzag and one, two or more groove arrangements.
Term " plane stress elimination feature " used herein also may 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 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 flexibility of interconnection piece.Thickness T It 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 such as It is 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.Interconnection Rear surface of the front surface of part towards solar energy module.Due to interconnection piece can across in solar energy module two parallels it is super Gap between grade battery, therefore, from a part that can see that interconnection piece previously by the gap of solar energy module.Optionally The visible part on ground, interconnection piece can be dimmed, such as coating black polymeric nitride layer, to reduce its visibility.In shown example In, length L2 is that the central part 3400C of the front surface of the interconnection piece of about 0.5cm is coated with relatively thin black polymeric nitride layer.It is logical Often, L2 is greater than or equal to the width in the gap between superbattery row.The thickness of black polymeric nitride layer can be for example, about 20 microns. Such thin copper belt interconnection piece can also be optionally interior using plane or plane external carbuncle eliminates feature, as described above.For example, mutually Even part 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 shows 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 opposite sides of feature.Exemplary planar external carbuncle disappears Except feature includes the arrangement of one, two or more bending, kink, scrobicula, bump 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 in plane with plane external carbuncle Except feature is designed to reduce or minimize the tension and stress effect on solar battery joint portion, and to form height Reliable and elasticity electrical connection.
Figure 39 A-1 and Figure 39 A-2 show the exemplary configuration for short hiding tap interconnection piece, described short hiding Tap interconnection piece include battery contact pad alignment characteristics and superbattery edge alignment characteristics, be advantageously implemented automation and It accurately places and easily fabricated.Figure 39 B-1 and Figure 39 B-2 are shown for having the short of asymmetric tab length to hide Tap interconnection piece exemplary configuration.Such asymmetry interconnection piece can be super to avoid being parallel to on relative orientation The conducting wire overlapping that the long axis of grade battery extends.(see below the discussion to Figure 42 A to Figure 42 B).
Hiding tap can form electrical connection needed for module placement as described herein, in order to provide required Modular circuit.For example, can along superbattery the interval of 12,24,36 or 48 solar batteries or The tap connection that any other suitable interval is hidden.It interval between hiding tap can be according to specifically answering For determining.
Each superbattery generally includes the front surface terminal contact at one end in superbattery and is in super Rear surface terminal contact at the other end of battery.The variations of the length or width of solar energy module are crossed in superbattery In, 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 surpass Other electrical components that grade battery is electrically connected to other solar batteries or is electrically connected in module.For example, Figure 34 A is shown The viewgraph of cross-section of example property solar energy module, wherein interconnection piece 3410 is conductively joined to the rear table of the end of superbattery Face terminal contact.Rear surface terminal contact interconnection 3410 can be or have including such as thin copper belt or foil, the thin copper belt or foil Have the thickness on the surface of the solar battery engaged perpendicular to it, the thickness less than or equal to about 100 microns, be less than 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 flexibility of interconnection piece.In the sun In the plane of energy battery surface, interconnection piece can have for example in the direction perpendicular to the direction of current flow for flowing through interconnection piece Width greater than or equal to about 10mm, to improve conduction.As shown, rear surface terminal contact interconnection piece 3410 can be located at too Behind positive energy battery, wherein it is super that interconnection piece does not have any a part to extend on the direction for being parallel to superbattery row Except battery.
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 be directly connectcted to superbattery thin soft Property part and provide more high conductance thicker portion.The required interconnection of conductibility needed for this arrangement reduces realization Part width.For example, the thicker portion of interconnection piece can be the integration section of interconnection piece, it is also possible to be joined to the relatively thin of interconnection piece Partial separate part.For example, Figure 34 B to Figure 34 C each illustrates the preceding table for being conductively joined to superbattery end The viewgraph of cross-section of the exemplary interconnection piece 3410 of face terminal contact.In the two examples, it is directly connectcted to superbattery The thin flexible portion 3410A of interconnection piece includes thin copper belt or foil, and the thin copper belt or foil have the sun engaged perpendicular to it Can battery surface thickness, the thickness less than or equal to about 100 microns, less than or equal to about 50 microns, 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, with Improve the conductibility of interconnection piece.In Figure 34 B, conductive tape 3410C in the rear surface of thin interconnecting parts 3410A is by thin interconnection Part is joined to superbattery and thick interconnecting parts 3410B.In Figure 34 C, thin interconnecting parts 3410A uses electroconductive binder 3410D is joined to thick interconnecting parts 3410B, and is joined to superbattery using electroconductive binder 3410E.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 is also possible to glass or any other suitable material.Additional encapsulation bar can be set 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 usual height What the conducting wire of degree reflection was formed, therefore, and the solar battery of attachment is compared, they will generally have high contrast.However, logical It crosses and forms connection in the rear surface of solar battery, and by being also routed in other conducting wires in solar energy module circuit Behind solar battery, various conducting wires are not seen.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 connects Each superbattery is divided into three sections by touch pad and short interconnection piece 3400, and adjacent superbattery sectional parallel is electrically connected, To form the three groups of superbattery being connected in parallel segmentations.Each group be incorporated to (insertion) to the bypass in the laminated construction of module A different bypass diodes is connected in parallel in diode 1300A-1300C.Bypass diode can be for example positioned at super electricity Between the positive back in pond or superbattery.For example, bypass diode can be approximately along parallel with solar energy module long side The setting of solar energy module center line.
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 Battery, the length of each superbattery extension of module.Hiding tap engagement pad and short interconnection piece 3400 is by each super electricity Pond is divided into three sections, and adjacent superbattery sectional parallel is electrically connected, to form three groups of superbatteries being connected in parallel Segmentation.Each group connects bypass two poles different from bypass diode 1300A-1300C 1500A-1500C by bus Pipe is connected in parallel, and the bus connection is located at behind superbattery and connects hiding tap engagement pad and short interconnection piece It is connected to the bypass diode positioned at the rear portion of terminal box internal module.
Figure 42 B provides short hiding tap interconnection piece 3400 and the detailed connection view of conducting wire 1500B and 1500C 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.The alternative for avoiding conducting wire from being overlapped is using the first symmetrical of the protruding portion with a length 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 total of the entire width for substantially extending solar energy module Line.Each bus can be the single long interconnection piece 3400 for being conductively joined to the back surface metallization of each superbattery. Alternatively, bus may include multiple individual interconnection pieces, each interconnection piece is crossed over single superbattery, is conductively joined to It is electrically interconnected each other or otherwise, as described in above in association with Figure 41.Figure 43 is also shown: superbattery terminal interconnection piece 3410, continuous bus is formed along one end of solar energy module, to be electrically connected the front surface terminal contact of superbattery；And Additional superbattery terminal interconnection piece 3410, forms continuous bus along the opposite end of solar energy module, super to be electrically connected The rear surface terminal contact of battery.
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 2/3 length and the part of 1/3 length.The interconnection piece of the lower edge of solar energy module Be connected in parallel to each other interconnection, three row of right side of three row of left side is connected in parallel to each other interconnection and three row of left side and right by 3410 (as shown in the picture) Three row's interconnected in series of side.This arrangement forms the three groups of superbattery being connected in parallel segmentations, wherein each superbattery The length of group is the 2/3 of the length of superbattery.An each group of bypass different from bypass diode 2000A-2000C Diodes in parallel connection.If they are electrically connected as shown in figure 41, the voltage that this arrangement provides is The about twice of identical superbattery, electric current are about half of identical superbattery.
As described in above in association with Figure 34 A, the interconnection piece for being joined to 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 is in the rearview of solar energy module (for example, such as in Figure 43) as it can be seen that extending to because of it super Around end of superbattery and the end except the end of battery (for example, as in Figure 44 A) or because of it Lower section folds.
Help for a small amount of solar battery of each bypass diode to be 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, each superbattery extension die The length of block.Each superbattery is segmented into five parts by hiding tap engagement pad and short interconnection piece 3400, and will be adjacent Superbattery sectional parallel electrical connection, to form the five groups of superbattery being connected in parallel segmentations.Each group be incorporated to (insertion) Into the bypass diode 2100A-2100E in the laminated construction of module, a different bypass diodes is connected in parallel.Bypass Diode can be for example between the positive back of superbattery or superbattery.Superbattery terminal interconnection piece 3410 along One end of solar energy module forms continuous bus, to be electrically connected the front surface terminal contact of superbattery；And add super electricity Pond terminal interconnection piece 3410 forms continuous bus along the opposite end of solar energy module, to be electrically connected the rear surface end of superbattery Sub- contact.In the example of Figure 48 A, single terminal box 2110 is electrically connected to front surface and rear table by conducting wire 2115A and 2115B Face terminal interconnection bus.However, there is no diode in terminal box, therefore alternatively (Figure 48 B), long return wire can be eliminated 2215A and 2115B, and with two unipolarities (+or -) the terminal box 2110A- for the opposite edge for being located at such as module 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 using hiding tap by example as described herein Positive energy battery, but these examples are intended for illustration rather than limit.It more generally says, hiding tap can be used for super electricity Pond electricity is segmented into than more or less groups of the solar battery, and/or is segmented into than more or less a solar energy 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 adjacent overlapping solar energy The battery formed between battery engages and flows through the length of each superbattery to battery conductibility.In contrast, Figure 45 is shown Electric current when the bypass diode by forward bias gets around a part of solar energy module.As shown by arrows, herein In example, the electric current in the superbattery of the leftmost side is flowed along superbattery, until reaching the solar battery of tap, then It flows through in back surface metallization, hiding tap engagement pad (not shown) and the adjacent superbattery of the solar battery Another hiding tap on the second solar battery that interconnection piece 3400, the interconnection piece of second solar battery are engaged connects Touch pad (not shown), flows through the back surface metallization of the second solar battery, and flows through additional hiding tap contact Pad, interconnection piece and solar battery back surface metalation to reach bus connection 1500, then arrive bypass diode.Flow through it The electric current of his superbattery is similar.As can be seen from the figure, in this case, hiding tap engagement pad can To conduct the electric current from two or more rows superbattery, and to which conduction is than any single solar battery in module The big electric current of the electric current of middle generation.
In general, do not have in the solar battery 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 surface In the case where the effect of Carrier recombination, the light conversion effect of solar battery in the region of hiding tap engagement pad can be reduced Rate.In order to avoid this loss in efficiency, most of solar battery in usual superbattery does not include that hiding tap connects Touch pad.(for example, in some variations, only for needing hiding tap engagement pad for bypass diode circuit Those of solar battery will include such hiding tap engagement pad).In addition, in order to make to include hiding tap contact Electric current in the solar battery of pad generate with lack hiding tap engagement pad solar battery in electric current generation phase Matching, the solar battery including hiding tap engagement pad can have the solar energy of the tap engagement pad more hiding than lacking The bigger light collecting zone of battery.
Individually the rectangular dimension of hiding tap engagement pad can for e.g., less than or equal to about 2mm multiplied by being less than or Equal to about 5mm.
During operation and during test, solar energy module is subjected to the temperature generated by the temperature change in installation environment Circulation.As shown in Figure 46 A, during this temperature cycles, the other parts of silicon solar cell and module in superbattery Thermal expansion mismatch between (for example, glass front plate of module) causes to take place along between superbattery and the other parts of module The relative motion of the long axis of superbattery row.This mismatch is intended to stretch or compresses superbattery, and may damage the sun Conductibility engagement between solar battery in energy battery or superbattery.Similarly, it as shown in Figure 46 B, is followed in temperature During ring, the thermal expansion mismatch being joined between the interconnection piece of solar battery and solar battery leads to interconnection piece and solar energy Relative motion occurs on the direction arranged perpendicular to superbattery between battery.This mismatch can tense and may damage solar energy Battery, interconnection piece and the conductibility engagement between them.For being joined to hiding tap engagement pad and being joined to super The interconnection piece of grade battery 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 is negative Carry can between the battery in superbattery the joint and joint between solar battery and interconnection piece forms part 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 Causing problem to movement, can select for engaging adjacent overlapping solar battery to mutual conductive adhesive It selects, engages 3515 (Figure 46 A), the flexible conductor engagement to form flexible conductor between the solar battery of overlapping Mechanical plasticity is provided for superbattery, so that reconciliation is parallel to super electricity within the temperature range of about -40 DEG C to about 100 DEG C Thermal expansion mismatch on the direction of pond row between superbattery and the glass front plate of module, makes the thermal expansion mismatch be unlikely to damage Solar energy module.Conductive adhesive can form conductibility engagement by selection, and the conductibility is bonded on standard testing Under the conditions of modulus of shearing (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, less than or equal to about 600,000,000 Pa, 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 be less than or equal to About 1000 megapascal.Flexible conductor engagement between the adjacent solar battery of overlapping can reconcile before for example each battery and glass Differential motion between plate greater than or equal to about 15 microns.Suitable conductive adhesive may include for example derived from engineering conduction material Expect the ECM 1541-S3 of Co., Ltd (Engineered Conductive Materials LLC).
In order to promote the hot-fluid along superbattery, to make in module too due to masking or certain other reasons In the case that positive energy battery is reverse-biased, the issuable hot spot damage solar energy module during the operation of solar energy module is reduced Risk, the conductibility engagement between the adjacent solar battery of overlapping can be formed as example perpendicular to solar battery direction On thickness less than or equal to about 50 microns, and perpendicular to the thermal conductivity on solar battery direction greater than or equal to about 1.5W/(m-K)。
The relative motion between solar battery engaged in order to prevent by interconnection piece with it causes problem, and being used for will be mutual The conductive adhesive that even part is joined to solar battery can be by selection to be formed between solar battery and interconnection piece Conductibility engagement, the conductibility engagement is sufficiently rigid, to force interconnection piece within the temperature range of about -40 DEG C to about 180 DEG C The thermal expansion mismatch reconciled between solar battery and interconnection piece makes the thermal expansion mismatch be unlikely to damage solar energy module.This Kind conductive adhesive can form conductibility engagement by selection, 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 greater 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 be 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 greater 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 greater 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 thermal expansion or be heat-shrinked.Suitable conductive adhesive may include such as Hitachi CP-450 and solder.
Therefore, conductibility engagement and superbattery and flexible electrical between the adjacent solar battery being overlapped in superbattery Conductibility engagement between interconnection piece can utilize different conductive adhesives.For example, superbattery and flexible electrical interconnection it Between conductibility engagement can be formed by solder, and be overlapped adjacent solar battery between conductibility engagement can be passed by non-solder The property led adhesive is formed.In some variations, two kinds of conductive adhesives can be solidified by single processing step, such as In about 150 DEG C to about 180 DEG C of processing window.
It is described above be absorbed in multiple solar batteries are assembled in a manner of stacking on a common substrate (can be to cut out Solar battery).This leads to the formation of module.
However, need to usually install the multiple this moulds fitted together in itself to collect enough solar energy to be used Block.According to multiple embodiments, multiple solar cell modules can also be used stacking mode and assemble, to promote the area effect of array Rate.
In certain embodiments, the feature of module may be to have top conduction weldering on the direction towards solar energy Band, 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, the exposure of top welding, it is possible that incident light can be stopped, so negatively affect efficiency.
According to multiple embodiments, module itself can be covered, so that top welding is covered by adjacent module.This stacking formula Module construction can also provide additional areas for installing other elements, without negatively affecting module array most in module Whole 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 produce integrated tilt module roof mounting rack solution, and wherein the size of terminal box determines gradient. To the array for covering formula module to be mounted on roofdeck, this embodiment may be particularly useful.
Stacking formula superbattery is used in module placement, is installation module level electric power controller (for example, DC/AC is micro- Inverter, DC/DC modular power optimizer, voltage intelligent switch and relevant apparatus) provide unique chance.Module level function Rate management system is characterized in power optimization.The superbattery for being such as described herein and using can produce electricity more higher than traditional panel Pressure.In addition, superbattery module placement can also be by module subregion.Voltage increases, subregion increases, these are all to optimize diving for power In benefit.
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, so that superbattery is formed, 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 superbattery It may include any amount of solar battery, in some variations, including at least 19 solar batteries, and example Such as, in certain variations, it is greater than or equal to 100 silicon solar cells.Each solar energy module can have conventional ruler Very little and shape, and further include hundreds of silicon solar cells, so that the superbattery in single solar energy module be allowed to carry out It is electrically interconnected, in order to provide for example, about 90 volts (V) to about 450V or bigger direct current (DC) voltage.
As described further below, it before being converted to AC by inverter, is boosted by eliminating or reducing to DC-DC The needs of (D/C voltage raising), this high D/C voltage facilitate through inverter (for example, being located at 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 to be held by central inverter The arrangement of row DC/AC conversion, it is folded that 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 lid formula solar cell module exports.
Turning now to attached drawing, to understand solar energy module described in this specification in more detail, Fig. 1 show with The viewgraph of cross-section for a string of solar batteries 10 that stacking mode arranges, is connected in series, the wherein end of adjacent solar battery It is overlapped and is electrically connected, to form superbattery 100.Each solar battery 10 includes semiconductor diode structure and connection To the electric contact of semiconductor diode structure, the electric current that solar battery 10 wherein generates when being irradiated by light can be touched by these electricity It puts and is supplied to external loading.
In the example of this specification description, each solar battery 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 is 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 figures Case provides electrical contact for the opposite sides of n-p junction.However, if applicable, other materials system, diode junction can be used Structure, physical size or electrical contact arrangement.For example, preceding (day side) surface metalation pattern may be provided at, p-type is conductive partly to be led On body layer, rear (in the shade side) surface metalation pattern be may be provided on the conductive semiconductor layer of n type.
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 by the front surface metal of a solar battery Change the rear surface metallization pattern that pattern is electrically connected to adjacent solar battery.Suitable conductive bonding material may include for example leading Electric adhesive, electrically conductive adhesive film and strip of conductive adhesive and general solder.
Fig. 2 shows the exemplary rectangular solar energy module 200 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 It is parallel to the long side orientation of module.The solar energy module of like configurations may also comprise the superbattery of this side length, 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, and wherein their long side is parallel to The short side of module is orientated.In other other arrangements, each row may include two or more super electricity of series electrical interconnection Pond.Module can have the short side that length is for example, about 1 meter and the long side that length is for example, about 1.5 to about 2.0 meters.It can also Any other suitable shape (for example, square) and size are selected for solar energy module.
In some variations, the conductibility engagement between the solar battery of overlapping provides machinery for superbattery can Plasticity, to reconcile within the temperature range of about -40 DEG C to about 100 DEG C and be parallel to superbattery on the direction that superbattery is arranged Thermal expansion mismatch between 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 batteries, the width of each rectangle solar battery Degree is equal or approximately equal to the 1/6 of the 156mm square of stock size or the width of dead square silicon wafer, and length is equal to Or it is substantially equal to the width of square or pseudo-square wafers.In addition, in general, being used in solar energy module as described herein Rectangle silicon solar cell length can for example be equal or approximately equal to stock size square or dead square silicon wafer The width of piece, and its width is for example equal or approximately equal to the 1/ of the square of stock size or the width of pseudo-square wafers M, wherein M is≤20 any integer.M can be such as 3,4,5,6 or 12.M can also be greater than 20.Superbattery may include appointing What this appropriate number of class rectangle solar battery.
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 compares conventional voltage will pass through the solar energy module offer of stock size Higher voltage, because the stacking method described just now incorporates each module than conventional much more battery.E.g., including The stock size solar energy module for the superbattery being made of 1/8 cutting silicon solar cell may include more than 600 solar energy Cell/module.In contrast, the stock size solar energy module of the silicon solar cell including stock size and interconnection usually wraps Include about 60 solar battery/modules.In conventional silicon solar module, square or dead square solar battery are usual It is interconnected, and is separated from each other to accommodate interconnection piece by brazing band.In this case, just by the square of stock size or standard Square wafer, which is cut into narrow rectangle, to reduce the total amount of effective solar-electricity pool area in module, so that modular power is reduced, because To need interconnection piece between additional battery.In contrast, in solar energy module disclosed herein, covering formula arrangement will be between battery Electrical interconnection be hidden in the lower section of effective solar-electricity pool area.Therefore, solar energy module as described herein can not drop High output voltage is provided in the case where low module output power, because of the solar battery number in modular power and solar energy module It measures and trades off or be not present compromise between (interconnection piece between required battery) there are very little.
When all solar batteries are connected in series, for example, covering formula solar cell module as described herein can be with D/C voltage in about 90 volts to about 450 volts or bigger of range 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 to AC Conversion.Referring now to Figure 49 A to Figure 49 B, usually micro- inverter 4310 receives the 25V from single solar energy module 4300 extremely 40V DC input, and 230V AC output is exported, to match the power grid of connection.Micro- inverter generally includes two main components: DC/DC boosting and DC/AC inversion.DC/DC boosting converts required DC bus voltage for increasing DC/AC, and usually very Expensive and loss is very big (2% loss in efficiency).Since solar energy module as described herein provides high voltage output, can subtract Less or eliminate the needs (Figure 49 B) that boost to DC/DC.This can reduce cost and increase solar energy module 200 efficiency and Reliability.
The heart (" serial type ") inverter in use rather than in the conventional arrangement of micro- inverter, conventional low DC exports solar energy mould Block is electrically connected to one another in series and is electrically connected to serial type inverter.Individual module electricity is equal to by the voltage that solar energy module string generates The summation of pressure, because module is to be connected in series.Allowable voltage range determines the minimum and maximum module number in string.Maximum norm Number of blocks 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 minimum operation voltage as needed for module voltage and serial type inverter in string It determines: Nmin×Vmp>VInvertermin.Needed for serial type inverter (for example, Fronius, Powerone or SMA inverter) most Small operation voltage (VInvertermin) generally between about between 180V and about 250V.In general, the optimum operation voltage of serial type inverter It is about 400V.
Single high D/C voltage covers formula solar cell module and can produce than needed for serial type inverter as described herein The bigger voltage of minimum operation voltage, and optionally at or approximately at the optimum operation voltage of serial type inverter.Therefore, originally High D/C voltage covers formula solar cell module described in text can be electrically connected to serial type inverter parallel to each other.This avoids The string length demand of the module string of series connection, and this demand may be such that system design and installation complicate.In addition, in the sun In the series connection string of energy module, minimum current module is dominant, and if as the module in different roofs pitch may be sent out As life or due to tree shade, the disparate modules in the string receive different irradiations, then system can not be operated effectively.This paper institute The parallel high-voltage module configuration stated can also be to avoid these problems, because passing through the electric current of each solar energy module independently of wearing Cross the electric current of other solar energy modules.In addition, this arrangement does not need module level power electronic device, and therefore can improve The reliability of solar energy module, this is even more important solar energy module to be deployed in the variations on roof.
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 too by this in the end of superbattery or middle position The back surface of positive energy battery metallizes to realize.Such hiding tap allows the electricity segmentation of superbattery, and makes it possible to It is enough that the segmentation of superbattery or superbattery is interconnected to bypass diode, module level power electronic device (for example, micro- inversion 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 Application, 62/133,205 U.S. Provisional Application of No. and No.14/674,983 U. S. application 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 module 200 respectively include six superbatteries 100, and the superbattery is electrically connected in series to provide high D/C voltage.Each superbattery 4400 electricity of tap being hidden is segmented into several groups solar battery, wherein every group of solar battery and different two pole of bypass The electrical connection in parallel of pipe 4410.In these examples, bypass diode is arranged in solar energy module laminate structures, that is, solar energy Battery is in the encapsulant between front surface transparent panel and back plate.Alternatively, bypass diode, which can be set, is being located at the sun In the rear surface of energy module or the terminal box on edge, and hiding tap is interconnected to 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 the superbattery of three pairs of series connections by electricity, wherein each pair of superbattery is electrically connected from different bypass diode parallel connections It connects.In this example, bypass diode is arranged in the terminal box 4500 on the back surface of solar energy module.Bypass two poles Pipe can be alternatively positioned in solar energy module laminate structures or in the terminal box of edge installation.
In the example of Figure 50 A to Figure 51 B, in the normal operating of solar energy module, each solar battery is positive Bias, and therefore all bypass diodes are all reverse-biased and non-conducting.However, if one or more solar-electricities in one group Sufficiently high voltage is arrived by reverse-biased in pond, then corresponding to the bypass diode of the group will open, and the electric current for passing through module will Bypass reverse-biased solar battery.This will prevent from forming dangerous hot spot in masking or failure solar battery.
Alternatively, bypass diode function can be in the module level power electronic being arranged on or near solar energy module It is completed in device (such as micro- inverter).(module level power electronic device and its using herein be referred to as module level electricity Source control device or system and module level power management).This kind of module grade power electronic optionally integrated with solar energy module Device can optimize each list in superbattery group, the superbattery from each superbattery or from electricity segmentation The power of only superbattery segmentation at best power point (for example, by operating superbattery group, superbattery or superbattery Segmentation), it is enable to carry out discrete power optimization in module.Module level power electronic device can be eliminated in module Any bypass diode needs because power electronic device can decide when to bypass entire module, particular super battery 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 battery.If detecting the presence of reverse-biased solar energy Battery, then (for example) relay switch or other component just can be used in electric power controller, and corresponding circuit is broken from electric system It opens.For example, electric power controller will be cut if the voltage of the solar battery circuit of monitoring drops below predetermined threshold Break the circuit (open circuit).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, from Enphase Energy company, Solaredge Technologies company, Tigo Energy company) in or pass through custom circuit design To implement.
Figure 52 A (physical layout) and Figure 52 B (corresponding electrical schematic diagram) is shown for including stacking 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 Six rectangles including being arranged to six rows cover formula superbattery 100, and six row extends the length of the long side of solar energy module. Six superbatteries are electrically connected in series, to provide high D/C voltage.Module level power electronic device 4600 can be directed to entire module To execute voltage sensor, power management and/or DC/AC conversion.
Figure 53 A (physical layout) and Figure 53 B (corresponding electrical schematic diagram) is shown for including stacking 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 length of the long side of solar energy module Degree.Six superbatteries are assembled the superbattery of three pairs of series connections by electricity.Each pair of superbattery is individually connected to module level Power electronic device 4600, so as to execute voltage sensor and power optimization on each pair of superbattery, by two in them It is a or more to 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) is shown for including stacking 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 length of the long side of solar energy module Degree.Each superbattery is individually connect with module level power electronic device 4600, so as to execute on each superbattery Two of which or more is connected in series to provide high D/C voltage, and/or executes DC/ by voltage sensor and power optimization AC conversion.
Figure 55 A (physical layout) and Figure 55 B (corresponding electrical schematic diagram) is shown for including stacking 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 length of the long side of solar energy module Degree.4400 electricity of tap that each superbattery is hidden is segmented into the solar battery of two or more groups.Each obtain Solar battery group is individually connect with module level power electronic device 4600, so as to execute in each solar battery group Multiple groups are connected in series to provide high D/C voltage, and/or execute DC/AC conversion by voltage sensor and power optimization.
In some variations, two or more high voltage DCs as described herein cover formula solar cell module It is electrically connected in series to provide high voltage DC output, the output is converted into AC by inverter.For example, inverter can be and the sun An integrated micro- inverter in energy module.In this case, micro- inverter can optionally be same executes as above The component of the module level power management electronics of the additional sensing and linkage function.Alternatively, inverter can 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 be slightly offset in a staggered manner along their long axis.This adjacent end portion for staggeredly superbattery being allowed to arrange is by engaging To a superbattery top and be joined to the interconnection piece 4700 of bottom of another superbattery and be electrically connected in series, save simultaneously Module region (space/length) and simplify manufacture.For example, the superbattery of adjacent row can deviate about 5 millimeters.
On different heat expansion and solar battery and interconnection piece between electrical interconnection 4700 and silicon solar cell To stress can lead to rupture and other failure modes, so as to reduce the performance of solar energy module.Therefore, it is necessary to interconnection pieces It is flexible and be configured to reconcile such different expansion in the case where not forming significant stress.For example, by by height Ductile material (for example, soft copper, scale copper) formation, by low coefficient of thermal expansion materials (for example, Covar (Kovar), invar close Golden (Invar) or other low thermal coefficient of expansion iron-nickel alloys) it is formed, or by the thermal expansion coefficient with substantially matching silicon, conjunction And (such as, the slit, recessed of geometry expansion characteristics in the plane of the different heat expansion reconciled between interconnection piece and silicon solar cell Slot, hole or truss structure) and/or using geometrical characteristic (such as, kink, bump outside the plane of the such different heat expansion of reconciliation Or scrobicula) material formed, interconnection piece can provide stress and thermal expansion eliminate.The conductive portion of interconnection piece can have example Such as less than about 100 microns, less than about 50 microns, the thickness less than about 30 microns or less than about 25 microns, to increase interconnection piece It is flexible.(usually existing low current makes it possible for thin flexible conductor welding in these solar energy modules, without because thin mutual Connect the resistance of part and generate excessive power loss).
In some variations, the conductibility between superbattery and flexible electrical interconnection, which engages, forces flexible electrical interconnection The thermal expansion mismatch that part is reconciled within the temperature range of about -40 DEG C to about 180 DEG C between superbattery and flexible electrical interconnection, makes The thermal expansion mismatch is unlikely to damage solar energy module.
Fig. 7 A (as discussed above) is shown to be matched using several exemplary interconnection pieces that plane stress eliminates geometrical characteristic 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 outside using plane The exemplary interconnection piece of stress elimination geometrical characteristic configures, and is indicated by reference label 400U and 3705.These use stress elimination Any of interconnection piece configuration of feature or any combination may adapt to superbattery series electrical interconnection to provide high DC 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 into The possibility DC/AC conversion of the high DC module voltage of row, to provide the AC output from module.As described above, as described herein DC/AC conversion from the high D/C voltage for covering formula solar cell module can be executed alternatively by center serial type inverter. For example, Figure 57 A schematically shows photovoltaic system 4800, which includes that multiple high D/C voltages cover formula solar-electricity Pond module 200, the solar cell module via the negative bus 4820 of high D/C voltage and the positive bus 4810 of high D/C voltage each other simultaneously Connection is electrically connected to serial type inverter 4815.In general, each solar energy module 200 includes multiple stacking formula superbatteries, it is described super Grade battery is electrically connected in series to provide high DC voltage, as described above with electrical interconnection.For example, solar energy module 200 can appoint Selection of land includes the bypass diode arranged as described above.Figure 57 B shows the exemplary portion of the photovoltaic system 4800 on roof Administration.
In some variations of photovoltaic system 4800, high D/C voltage covers two of formula solar cell module or more Multiple short series connection strings can be electrically connected with serial type inverter parallel.Referring again to Figure 57 A, for example, each solar energy module 200 could alternatively be the series connection string that two or more high D/C voltages cover formula solar cell module 200.Doing so can It can be to for example be provided to the voltage of inverter while deferring to supervision standard and maximize.
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).It as discussed above, as described herein include M times of solar battery of conventional amounts High D/C voltage covers the voltage and conventional solar energy mould that formula solar cell module substantially generates M times higher than conventional solar energy module The electric current of the 1/M of block electric current, wherein the area of each solar battery is the about 1/M of the area of conventional solar battery.As above Described in text, M can be any suitable integer, usually≤20, but can be greater 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.By two A this kind of module series connection can provide about 600V DC for bus, to defer to the maximum set value of U.S.'s residential standard.If M=4, then covering the Voc of formula solar cell module for high D/C voltage can be for example, about 200V.By three this kind of module strings Connection connection can provide about 600V DC for bus.If M=12, formula solar cell module is covered for high D/C voltage Voc can be for example, about 600V.It can also be by system configuration at the bus voltage having less than 600V.In such variations, High D/C voltage covers formula solar cell module can be for example in header box in pairs or triplets or with any other conjunction Suitable combination connection, to provide optimum voltage for inverter.
The problem of being brought by the configured in parallel that above-mentioned high D/C voltage covers formula solar cell module is: if one too Positive energy module has short circuit, then other solar energy modules may interrupt the power on short block (that is, driving a current through Power in short block and the short block that dissipates) and generate danger.For example, preventing other modules by using being arranged to Drive a current through the blocking diode of short block, using current-limting fuse or combined use current-limting fuse and two pole of choked flow Pipe, can be to avoid this problem.Figure 57 B, which is schematically shown, is covering formula solar cell module 200 just in high D/C voltage Two current-limting fuses 4830 are used on terminal 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.Using the system of transformerless inverter usually not by negative conductor Ground connection.For transformerless inverter, preferably the plus end of current-limting fuse and solar energy module can be in line, and another One current-limting fuse is in line with negative terminal.
Blocking diode and/or current-limting fuse can for example be put with each module in terminal box or in module laminate structures It sets together.Suitable terminal box, blocking diode (for example, embedded blocking diode) and fuse are (for example, embedded molten Silk) it may include deriving from those of Shoals Technology Group company.
Figure 58 A shows the exemplary high voltage DC including terminal box 4840 and 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, and the current-limting fuse is elsewhere (for example, in header box) and solar energy mould The plus end and/or negative terminal of block are in line (for example, with reference to following Figure 58 D).Figure 58 B is shown including terminal box 4840 Exemplary high voltage DC covers formula solar cell module, and wherein the plus end of blocking diode and solar energy module is in line, And current-limting fuse 4830 is in line with negative terminal.Figure 58 C shows the stacking of the exemplary high voltage DC including terminal box 4840 Formula solar cell module, wherein current-limting fuse 4830 and the plus end of solar energy module are in line, and another current-limting fuse 4830 are in line with negative terminal.Figure 58 D is shown including being configured to the terminal box 4840 as shown in Figure 58 A and being located at wiring The exemplary high voltage DC of fuse outside box covers formula solar cell module, the plus end of the fuse and solar energy module It is in line with negative terminal.
Referring now to Figure 59 A to Figure 59 B, as the substitution 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 placed on together in header box 4860.In these variations, One or more individual conductors individually extend to header box from each module.As shown in Figure 59 A, in a kind of selection, a pole Property (for example, negative polarity as shown in the figure) single conducting wire between all modules share.In another kind selection (Figure 59 B), Two polarity have the individual conductor for each module.Although Figure 59 A to Figure 59 B is illustrated only in header box 4860 Fuse, but any appropriate combination of fuse and/or blocking diode each may lie in header box.In addition, for example, executing such as The electronic device of the other function of monitoring, MPPT maximum power point tracking and/or the disconnection of separate modular or module group etc can be Implement in header box.
It, can when one or more solar batteries in solar energy module are blocked or otherwise generate low current The reverse-biased operation of solar energy module occurs, and solar energy module is driving electricity more manageable than low current solar battery Bigger electric current is flowed to operate under the voltage and current point of low current solar battery.Reverse-biased solar battery may heating And form unsafe conditions.For example, by the way that suitable operation voltage is arranged for inverter, high D/C voltage covers formula as shown in Figure 58 A The parallel arrangement of solar cell module can make module be protected and from reverse-biased operation.This is for example by Figure 60 A to figure 60B is shown.
Figure 60 A shows the electric current and voltage for being connected in parallel string that formula solar energy module is covered for about ten high D/C voltage Curve graph 4870 and power and electric current curve graph 4880.It does not include the reverse-biased sun that these curves, which are for solar energy module, What the model of energy battery calculated.Since solar energy module parallel connection is electrically connected, all of which operation voltage having the same is simultaneously And their electric current is added.In general, inverter will change the load on circuit, to probe into power vs. voltage curve, to identify the song Maximum point on line, then at this point operation module circuit to maximize output power.
In contrast, Figure 60 B is shown for some including one or more reverse-biased in the solar energy module in circuit The case where solar battery, the song of the electric current of the model system for Figure 60 A and the curve graph 4890 and power of voltage and voltage Line chart 4900.Reverse-biased module is revealed in exemplary current voltage curve and forming knee shape, wherein from down to about 210 About 10 amperes under the voltage of volt operate about 16 amperes of operations being transitioned under the voltage below about 200 volts.It is being below about 210 volts Voltage at, the module being blocked includes reverse-biased solar battery.Reverse-biased module is also by there are two maximum values and in power- It is revealed in voltage curve: in the maximum value under about 200 volts and the local maximum under about 240 volts.Inverter can To be configured to identify such mark of reverse-biased solar energy module, and the absolute or local maxima power reverse-biased in no module The electric pressing operation solar energy module of point.In the example of Figure 60 B, inverter can at local maximum power point operation module, To ensure that no module is reverse-biased.Additionally or alternatively, minimum operation voltage can be selected for inverter, it should when being lower than When minimum operation voltage, any module will be less likely reverse-biased.By other parameters (such as environment temperature, operation electric current and based on The solar energy module temperature calculated or measured) and the other information (such as irradiation level) that is received from external source, adjustable institute State minimum operation voltage.
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 used optionally In the high voltage solar energy module for the electrical connection in parallel for providing high D/C voltage for serial type inverter, or for respectively including micro- inverse Become the high voltage solar energy module of device, the high D/C voltage of solar energy module is converted into AC module and exported by micro- inverter.Example Such as, a pair of of high voltage solar energy module can cover as just mentioned, and be electrically connected in series electric with the DC needed for providing Pressure.
Conventional serial type inverter usually requires have quite wide in range potential input voltage range (or " dynamic range "), this It is because 1) they must be compatible with different series connection module string length 2) some modules in string can be by complete or portion It point blocks and 3) variation of environment temperature and radiation can change module voltage.Using parallel configurations as described herein In system, the length of the solar energy module string of series connection will not influence voltage.In addition, being at least partially obscured simultaneously for some modules And some modules the case where not being blocked, in that case it can be decided that operating system is (for example, as above under the voltage for the module not being blocked It is described).Therefore, the input voltage range of the inverter in parallel configurations system only may need to reconcile the 3rd factor (that is, temperature Degree and radiation variation) " dynamic range ".Since this is fewer, for example, inverter needs about the 30% of conventional dynamic range, because Inverter used in this parallel configurations system as described herein can have relatively narrow MPPT (MPPT maximum power point tracking) range, Such as between about 175 volts under about 250 volts under standard conditions and high temperature and Low emissivity, such as between standard conditions Under about 450 volts and high temperature and Low emissivity under about 350 volts between (in this case, 450 volts of MPPT operation can correspond to The V under 600 volts in minimum temperature operationOC).In addition, as described above, inverter can receive enough D/C voltages, so as to AC is directly changed into the case where no boost phase.Therefore, serial type used in parallel configurations system as described herein is inverse Become device can it is simpler, cost is lower, and with efficiency more higher than serial type inverter used in legacy system operation.
Micro- inverter used in formula solar cell module is covered for high-voltage direct-current as described herein and serial type is inverse Become device, boosts needs to eliminate the DC of inverter, preferably by solar energy module (or the short series connection of 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, it is directed to 120V AC, Peak to peak value is sqrt (2) * 120V=170V.Thus, for example, solar energy module may be configured to provide the minimum of about 175V Vmp.Vmp under standard conditions can be to be about 212V (assuming that negative voltage temperature coefficient is 0.35%, maximum operating temp is 75 DEG C), and the Vmp under minimum temperature operating condition (for example, -15 DEG C) will be about 242V, therefore Voc (takes below about 300V Certainly in module fill factor).For split-phase 120V AC (or 240V AC), all these numbers are all doubled, and this is more convenient, Because 600V DC is the maximum value that the U.S. allows in many residential applications.For business application, needs and permit more High voltage, these numbers can further increase.
High voltage as described herein covers formula solar cell module and may be configured in > 600VOCOr > 1000VOC Lower operation, in this case, module may include the integrated power electricity that the external voltage for preventing module from providing is more than code requirement Sub- device.This arrangement can to operate VmpBe sufficiently used for split-phase 120V (240V needs about 350V), and when more than 600V There is no V under low temperatureOCThe problem of.
When the connection of building and power grid is disconnected, for example, if the sun is irradiating, being incited somebody to action when being disconnected by fireman (for example, on building roof) solar energy module that electric power is provided to building can still generate electricity.This can generate following point: After building and power grid disconnect, such solar energy module may make roof " electrification " with dangerous voltage.In order to This problem is solved, high-voltage direct-current as described herein covers formula solar cell module and can optionally include for example in module In 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 it will disconnect when losing certain signals (for example, from inverter) The high voltage of solar energy module from roof circuit exports.Communication with disconnecting unit can be for example by high-voltage cable, logical It crosses individual conducting wire or wireless realizes.
The remarkable advantage of stacking for high voltage solar energy module be solar battery 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 Relatively thin not only conductive but also thermally conductive engagement between pond.Front surface and rear surface perpendicular to solar battery measure by conduction The thickness for the conductive bond between adjacent overlapping solar battery that grafting material is formed can be e.g., less than or equal to about 200 micro- Rice 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 be less than or Equal to about 90 microns or less than or equal to about 80 microns or less than or equal to about 70 microns or 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 the interconnection between battery The resistance loss at place, and any hot spot from from the superbattery that may be formed during operation is further promoted along super The hot-fluid of grade battery.The thermal conductivity of engagement between solar battery can be greater than or be equal to about 1.5W/ (m-K).In addition, this The rectangular aspect ratio of usually used solar battery provides the extension area of the thermo-contact between adjacent solar battery in text Domain.
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 other solar batteries that band-like interconnection piece is diffused into module.This makes often It advises solar energy module and hot spot is more readily formed than solar energy module as described herein.
In addition, the electric current for passing through the solar battery in solar energy module as described herein is usually less than conventional across a string The electric current of solar battery, because superbattery as described herein is usually formed by stacking formula rectangle solar battery, Mei Geju Shape solar battery has the effective coverage for being less than (for example, 1/6) conventional solar battery.
Therefore, it in solar energy module disclosed herein, dissipates in reverse-biased solar battery under breakdown voltage Heat is less, and heat may be susceptible to diffuse through superbattery and solar energy module, without will form 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 battery.For example, superbattery can be encapsulated in thermoplastic olefin (TPO) polymerization In object.TPO encapsulant has more photo and thermal stability than standard ethylene-vinyl acetate (EVA) encapsulant.EVA once it is heated or by Ultraviolet light irradiation, just will become brown, and current limliting battery is caused to generate hot issue.In addition, solar energy module can have it is double Glass structure, wherein the superbattery encapsulated is sandwiched between glass front plate and back glass.Such double glass structures make too Positive 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 connecing If wire box, terminal box be may be mounted on one or more edges of solar energy module, rather than after solar energy module Face, wherein additional insulation layer is added to the solar battery in the module of top by terminal box.
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 for passing through superbattery can permit module one It is operated in the case that a or multiple solar batteries are reverse-biased, without generating significant risk.For example, in some variations, such as Every 25 solar batteries, which use, in high voltage solar energy module as described herein is less than a bypass diode, every 30 sun Can battery use less than a bypass diode, every 50 solar batteries use less than a bypass diode, it is every 75 too Positive energy battery, which uses to use less than a bypass diode, every 100 solar batteries, is less than a bypass diode, or only Single bypass diode does 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 of solar energy module is blocked, the damage to module can 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.As shown, 10 super Grade battery arrangement is at parallel.Each superbattery contains the solar battery 10 of 40 series connections, wherein 40 solar energy Each of 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 of the superbattery 100 being connected in series by conducting wire 4715, and then electricity Stream is flowed out by terminal box 4717.It is optionally possible to using single terminal box, rather than individually terminal box 4716 and 4717, So that electric current returns to a terminal box.Example shown in Figure 61 A shows each superbattery about one bypass two The specific implementation of pole pipe.As shown, single bypass diode is connected electrically at the point of the centre approximately along superbattery (for example, single bypass diode 4901A is connected electrically in the 22nd of the first superbattery between a pair of adjacent superbattery Between adjacent solar battery in solar battery and the second superbattery, the second bypass diode 4901B is connected electrically in It is such between two superbatteries and third superbattery).First string battery and last a string of batteries only have each bypass Solar battery quantity is approximately half of in the corresponding superbattery of diode.For example shown in Figure 61 A, the first string battery 22 batteries are only corresponded to each bypass diode in last a string of batteries.For high voltage solar energy module shown in Figure 61 A The bypass diodes total (11) of variations be equal to the quantity of superbattery and add 1 additional bypass 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 batteries 10 on adjacent superbattery are electrically connected using the flexible circuit 4718 for including bypass diode 4720 It connects.Flexible circuit 4718 and bypass diode 4720 are electrically connected to using the engagement pad 4719 being located in solar battery rear surface Solar battery 10.(referring also to hereinafter in relation to providing the tap hidden to bypass two using hiding engagement pad Pole pipe is discussed further).Additional bypass diode electrical connection scheme can be used to reduce the solar energy of each bypass diode Number of batteries.One example is shown in Figure 61 C.As shown, a bypass diode is approximately along the centre of superbattery It is connected electrically between each pair of adjacent superbattery.Bypass diode 4901A is connected electrically in the first superbattery and second super Between adjacent solar battery on battery, bypass diode 4901B is connected electrically in the second superbattery and third superbattery On adjacent solar battery between, bypass diode 4901C is connected electrically on third superbattery and the 4th superbattery It is such between adjacent solar battery.It may include second group of bypass diode, to reduce the partial occlusion the case where The quantity of the lower solar battery by bypass.For example, bypass diode 4902A is between bypass diode 4901A and 4901B Middle point is connected electrically between the first superbattery and the second superbattery, and bypass diode 4902B is in bypass diode Middle point between 4901B and 4901C is connected electrically between the second superbattery and third superbattery, such, from And reduce the number of batteries of each bypass diode.Optionally, another group of bypass diode can be electrically connected, so as to further Reduce the quantity for the solar battery that will be bypassed in the case where partial occlusion.Bypass diode 4903A is in bypass diode Middle point between 4902A and 4901B is connected electrically between the first superbattery and the second superbattery, bypass diode Middle point of the 4903B between bypass diode 4902B and 4901C is connected electrically in the second superbattery and the super electricity of third Between pond, to be further reduced the number of batteries of each bypass diode.It is this to configure the nesting for foring bypass diode Configuration, to allow to bypass a small amount of battery pack during part is covered.Additional diode can be electrically connected in this manner, Until solar battery quantity needed for reaching each bypass diode, for example, each bypass diode about 8, about 6, about 4 A or about 2 solar batteries.In some modules, each bypass diode needs about 4 solar batteries.If desired, One or more of bypass diode shown in Figure 61 C can be incorporated into hiding flexible interconnection, as shown in Figure 61 B.
Subject description discloses the cutting method of the cutting tool of solar battery and solar battery, the cutting tool Can be used for that the square of stock size or dead square solar battery are for example divided into multiple narrow rectangles or reality with cutting method The solar battery of rectangle in matter.The bottom surface and bending of these cutting tools and method in the solar battery of stock size Support surface between apply vacuum so that the solar battery of stock size is bent against curved support surface, thus edge Previously ready quarter line drawing solar battery is cut.The advantages of these cutting tools and cutting method, is that they are not It needs to be physically contacted with the upper surface of solar battery.Therefore, these cutting tools and method can be used for cutting solar battery, It include the soft material and/or uncured material that can be physically contacted damage on the upper surface of the solar battery.In addition, one In a little variations, these cutting tools and cutting method may need only to connect with the part of the bottom surface of solar battery Touching.In such variations, these cutting tools and method can be used for cutting solar battery, the bottom of the solar battery It include the soft material and/or uncured material that will not contact cutting tool in the multiple portions on portion surface.
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, thus Multiple rectangular areas are defined on silicon solar cell；Electroconductive binder grafting material is applied to one or more silicon solar electricity In the multiple portions of the top surface in pond；And bottom surface and curved support table in one or more silicon solar cells Apply vacuum between face so that one or more silicon solar cell is bent against curved support surface, and cause one or Multiple silicon solar cells then obtain multiple rectangle silicon solar cells, each rectangle silicon solar 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 battery.To solar energy Before or after battery progress laser incising is drawn, electroconductive binder grafting material can be applied to the silicon solar cell of stock size On.
Obtained multiple rectangle silicon solar cells, which can be arranged, to be in line, wherein the length of adjacent rectangle silicon solar cell While being overlapped in a manner of covering, and a part of electroconductive binder grafting material is disposed there between.Conductive bonding material with After can solidify, 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 Process will form stacking formula " superbattery ", as described in the patent application listed in " cross reference to related applications " above.
Turning now to attached drawing to more fully understand cutting tool disclosed herein and method, Figure 20 A is schematically shown It can be used for carving the side view of the example devices 1050 for the solar battery cutting drawn.In this device, carve draw it is normal Scale cun solar cell wafer 45 carries the bending part by vacuum manifold 1070 by mobile porous belts 1060.Work as the sun When energy battery wafer 45 passes through the bending part of vacuum manifold, the vacuum applied by the hole in porous belts is brilliant by solar battery The bottom surface of piece 45 is pulled towards vacuum manifold, so that solar battery be made to be bent.It can be to the bending part of vacuum manifold Radius of curvature R is selected, so that solar battery can be drawn the bending of solar cell wafer 45 to along quarter in this way Wire cutting forms rectangle solar battery 10.Rectangle solar battery 10 can be used for example in superbattery, such as Fig. 1 and figure Shown in 2.Solar cell wafer 45 can be cut in this way, applied electroconductive binder grafting material without contacting 45 top surface of solar cell wafer.
Cutting can preferentially start (that is, in edge for solar battery 45) at the 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 quarter line drawing, one end the other end it The preceding bending part for reaching vacuum manifold.As shown in Figure 20 B, for example, solar battery can be oriented such that its carve line drawing with The direction of travel of porous belts and, manifold traveling perpendicular to porous belts angled with the bending cut portion of manifold Direction orientation.For another example, Figure 20 C shows battery orientation at making it carve line drawing perpendicular to the direction of travel of porous belts, and discrimination The bending of pipe rive part be orientated to it is angled with the direction of travel of porous belts.
For example, cutting tool 1050 can be used 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 A, three, four or more mobile porous belts 1060, the mobile porous belts can for example be arranged side by side in parallel and Optionally it is separated from each other.Single vacuum manifold can be used in cutting tool 1050, and the vacuum manifold can be for example with vertical Directly in the width of the direction of travel of solar battery, which is substantially equal to the width of solar cell wafer 45.This vacuum Manifold can be for example used together with the mobile porous belts 1060 of single entire width, such as be arranged side by side in parallel simultaneously And two or more the such porous belts being optionally separated from each other are used together.
Cutting tool 1050 may include that two or more that be arranged side by side and be separated from each other in parallel are curved 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 arranged side by side in parallel and be optionally separated from each other two or more are such more Pore area is used together.For example, the tool may include the mobile porous belts 1060 for every vacuum manifold.It is arranged in latter In, vacuum manifold and its corresponding mobile porous belts can be arranged only along two fillets defined by the width of porous belts The bottom of contact solar cell chip.In this case, bottom surface of the solar battery in solar cell wafer It may include the soft material that will not contact porous belts in region, so that not having to damage the risk of soft material in cutting process.
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 drawn is carved 45 include uncured conductive adhesive grafting material and/or other soft materials at the top of it and/or in bottom surface.The sun Can battery wafer draw the application with soft material quarter and can be carried out by any order.
Figure 62 A schematically shows another exemplary cutting tool 5210 similar to above-mentioned cutting tool 1050 Side view, and Figure 62 B shows top view.In cutting tool 5210 in use, by solar-electricity is drawn at the quarter of stock size Pond chip 45 is placed on the porous belts 5230 that a pair of of parallel interval is opened, and the porous belts are with constant speed a pair of corresponding It is moved above parallel and spaced apart vacuum manifold 5235.The usually curvature having the same of vacuum manifold 5235.When chip with It is brilliant by the power of the vacuum pulled in bottom of wafer when porous belts travel across cutting region 5235C above vacuum manifold Piece is surrounded to be bent by the cut radius of the bent support delimited of vacuum manifold.When chip is bent around cut radius, carve Line drawing becomes crackle, and the crackle divides the wafer into individual rectangle solar battery.As described further below, vacuum manifold Curvature be arranged such that the rectangle solar battery of adjacent cutting is non-coplanar, and therefore, it occurs in cutting process Afterwards, the edge of the rectangle solar battery of adjacent cutting does not contact each other.The rectangle solar battery of cutting, which can use, appoints What suitable method progressive unloading from porous belts, several examples of the method are described below.In general, discharging method into One step is separated from one another by the solar battery of adjacent cutting, to prevent them to be in contact with each other when then coplanar.
Referring also to Figure 62 A to Figure 62 B, every vacuum manifold may include for example: flat site 5235F is not provided 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 small radii of low vacuum Cutting rear region 5235PC.Chip 45 is transported to transitional region 5235T and is worn from flat site 5235F by porous belts 5230 The region is crossed, is then transported in cutting region 5235C, wherein chip is cut, and the cutting solar energy that will then obtain The 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 lower (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 inches of mercury.
Transitional region 5235T provides transition curvature to cutting region 5235C from flat site 5235F.Transitional region One or more radius of curvature in 5235T are greater than the radius of curvature in cutting region 5235C.For example, in transitional region 5235T Bending can be elliptical a part, but any suitable bending can be used.Allow chip 45 by transitional region 5235T with Smaller Curvature varying transits directly to cutting area from the flat orientation in the 5235F of region close to cutting region 5235C Cut radius in the 5235C of domain helps to ensure that the edge of chip 45 will not be promoted and breaking vacuum, is promoted and breaking vacuum May be such that the cut radius for being difficult to chip is tied in cutting region 5235C.Vacuum in transitional region 5235T can be with Such as it is identical as in cutting region 5235C, exist among region 5235F and 5235C or along the length of region 5235T Transition between region 5235F and region 5235C.Vacuum in transitional region 5235T can be for example, about 2 to about 8 inches of mercury.
Cutting region 5235C can have the radius of curvature of variation, or optionally have constant radius of curvature.It is this Constant radius of curvature can be for for example, about 11.5 inches, about 12.5 inches or between about 6 inches and about 18 inches.It can To use any suitable curvature range, and the depth that line drawing is carved in the thickness and chip 45 of chip 45 can be based partially on The curvature range is selected with geometry.In general, chip is thinner, makes wafer bending and be enough to rupture it along line drawing is carved Required radius of curvature is shorter.Carving line drawing can have for example, about 60 microns to about 140 microns of depth, but also can be used Any other suitably more shallow or deeper quarter line drawing depth.In general, it is more shallow to carve line drawing, make wafer bending and being enough make its along Radius of curvature needed for carving line drawing rupture is shorter.The cross-sectional shape for carving line drawing also will affect required radius of curvature.Have Wedge-shaped or foot wedges quarter line drawings can be than having round or rounded bottom quarter line drawing more effectively concentrated stress.More effectively The quarter line drawing of ground concentrated stress allows the radius of curvature in cutting region not need the quarter that picture is less effective ground concentrated stress Line drawing is small like that.
At least usually compare for the vacuum in the cutting region 5235C of a vacuum manifold in two parallel vacuum manifolds It is high in other regions, to ensure that chip is suitably tied to cutting radius of curvature, to maintain constant bending stress.Optionally Ground, and as further described, in the region, a manifold can provide than another higher vacuum of manifold, so as to 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 of person.
Cutting rear region 5235PC usually has radius of curvature more smaller than cutting region 5235C.This is conducive to from porous Break surface friction or contact with the solar battery for shifting cutting in 5230, without allowing adjacent cutting solar battery (this may cause because crackle or other failure modes cause solar cell failure).Specifically, smaller radius of curvature exists Bigger spacing is provided between the edge of adjacent cutting solar battery on porous belts.Cut the vacuum in rear region 5235PC Can lower (for example, with similar or identical in flat site 5235F) because chip 45 has been split into solar battery 10, Therefore no longer need for solar battery to be tied to the bending radius of vacuum manifold.For example, the side of the solar battery 10 of cutting Edge can be taken away from porous belts 5230.Furthermore, it is possible to it is desirable that the solar battery of cutting 10 not tensed excessively.
The flat of vacuum manifold, transition, cutting and cutting rear region can be the discrete parts of different curves, and they End matching.For example, the upper surface of every manifold may include flat planar section, oval one for transitional region Partially, a part of another circular arc or ellipse for the circular arc of cutting region, and for cutting rear region.Alternatively, discrimination Some or all of bending part of upper surface of pipe may include the company that curvature gradually increases (close diameter of a circle reduction) Continuous geometric function.This suitable functions may include but be not limited to spiral functions (such as clothoid) and natural logrithm function.It returns Revolving curve is the curvature curve linearly increasing along crooked route length.For example, in some variations, transitional region is cut Cutting region and cutting rear region all is a part of the single clothoid with the one end for matching flat site.Some other In variations, transitional region is the clothoid of the other end of one end and matching cutting region with matching flat site, The cutting region has circle curvature.In variations below, cutting rear region can have the circle of such as more minor radius The clothoid curvature of curvature or 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, thus covering high vacuum manifold quarter line drawing end Place provides enough stress, to start along quarter line drawing rupture.The end for the chip that low vacuum manifold does not support it is complete It is tied to the curvature of manifold, therefore, the bending radius of the chip on the side is not small enough, can not be formed in quarter line drawing and start to rupture Required stress.However, stress is sufficiently high, so as to extend covering high vacuum manifold quarter line drawing the other end at start split Line.There is no some vacuum by the end part of chip and to be fully tied to the feelings of the curvature of manifold on " low vacuum " side Under condition, may have following risk: the crackle started on opposite " high vacuum " end of chip will not expand on chip always Exhibition.In variations as just mentioned, a manifold optionally can provide low vacuum along its whole length, from platform Region 5235F passes through cutting rear region 5235PC.
As just mentioned, the asymmetric vacuum arrangement in cutting region 5235C provides asymmetric stress, institute along line drawing is carved It states asymmetric stress control edge and carves line drawing and form the core of crackle and control crackle and spread along line drawing is carved.See, for example, Figure 63 B, such as Fruit is alternatively, two vacuum manifolds provide equal (for example, high) vacuum in cutting region 5235C, then can be in chip Both ends at form the core of crackle, crackle can extend toward each other, and merge in the somewhere of the central area of chip.? In this case, there are following risks: crackle does not form straight line each other, and therefore, their crackles in obtained cutting battery The potential mechanical failure point to merge.
As the substitution 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 at the one end for carving line drawing.For example, this can pass through Solar cell wafer is orientated to and vacuum manifold is at an angle realizes, as described in above in association with Figure 20 B.Alternatively, Vacuum manifold may be disposed so that the cutting region of a manifold in two manifolds and the cutting area of another vacuum manifold Domain is compared to be extended further along porous belt path.For example, two vacuum manifolds with same curvature can be porous in movement It is slightly offset on the direction of travel of band, so that solar cell wafer is before the cutting region for reaching another vacuum manifold Reach the cutting region of a manifold.
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 the center of vacuum passage 5245 The centre strut 5250 for the arrangement that is in line.Vacuum passage 5245 is effectively divided into positioned at row's centre strut by centre strut 5250 Either side on two parallel vacuum passages.Centre strut 5250 also provides support for porous belts 5230.In no center branch In the case where column 5250, porous belts 5230 will be exposed to longer no supporting zone, and may be by downward towards through-hole 5240 It inhales.It can lead to the three-dimensional bending (being bent with cut radius and perpendicular to cut radius) of chip 45, in this way so as to damage Solar battery simultaneously interferes 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 is connected to transitional region 5235T), with the high vacuum chamber 5260H (cutting region in Figure 62 A It 5235C) is connected to, and is connected to another low vacuum chamber 5260L (the cutting rear region 5235PC in Figure 62 A).It is this to be arranged in Smooth transition is provided between low vacuum regions and high vacuum region in vacuum passage 5245.Through-hole 5240 provides enough stream Dynamic resistance, so that air-flow will not deflect into the hole completely, and allow if the corresponding region in hole fully opens Other regions maintain vacuum.Vacuum passage 5245 assists in ensuring that the hole 5255 of vacuum porous belts will have vacuum always, and works as It is not in dead point when being set between through-hole 5240.
Referring again to Figure 65 A to Figure 65 B and also can be found in Figure 67, porous belts 5230 may include such as two rounds 5255, The hole is optionally arranged so that when porous belts advance along manifold, the leading edge of the solar battery 10 of chip 45 or cutting It is remained under vacuum with rear 527.Specifically, the interlaced arrangement in the hole 5255 in shown example ensures chip 45 or cuts The edge of the solar battery 10 cut is Chong Die at least one hole 5255 in each porous belts 5230 always.This helps to prevent Only the edge of chip 45 or the solar battery 10 of cutting is raised far from porous belts 5230 and manifold 5235.Also it can be used Any other suitable arrangement in hole 5255.In some variations, the arrangement in hole 5255 cannot ensure chip 45 or cutting The edge of solar battery 10 remain 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 not having to damage the risk of soft material in cutting process.
In substitute variants form, for example, single mobile porous belts 5230 can be used in cutting tool 5210, rather than such as The mobile porous belts of just described two, the single mobile porous belts have the width perpendicular to direction of travel, and the width is about Equal to the width of solar cell wafer 45.Alternatively, cutting tool 5210 may include three, four or more movements are more Pore area 5230, the mobile porous belts can be arranged side by side in parallel and optionally be separated from each other.Cutting tool 5210 can To use single vacuum manifold 5235, the vacuum manifold can width for example with the direction of travel perpendicular to solar battery Degree, the width are substantially equal to the width of solar cell wafer 45.This vacuum manifold can for example with single entire width Mobile porous belts 5230 are used together, or be arranged side by side and be optionally separated from each other in parallel two or more Such porous belts are used together.Cutting tool 5210 may include for example by two curved vacuum manifolds 5235 along opposite cross To the single mobile porous belts 5230 of edge supports, the curved vacuum manifold is arranged side by side and is spaced each other in parallel It opens, and every vacuum manifold curvature having the same.Cutting tool 5210 may include being arranged side by side in parallel and to each other The curved vacuum manifold 5235 of three or more separated, wherein every vacuum manifold curvature having the same.This arrangement can To be for example used together with the mobile porous belts 5230 of single entire width, or be arranged side by side in parallel and optionally The such porous belts of three or more being separated from each other are used together.For example, cutting tool may include for every vacuum discrimination The mobile porous belts 5230 of pipe.
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 drawn 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 draws the application with soft material and can carry 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 are to 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 Solar cell wafer 45.
Referring now to Figure 68, once after cutting, due to surrounding the geometry of curved, adjacent cutting battery 10 Leading edge and rear 527 between some spacing will be present, this can form wedge gap between adjacent cutting solar battery. If in the case where spacing between the battery for not increasing cutting first, the battery that allows to cut is 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 to cutting battery still by While curved surface supports, they are removed from porous belts 5230 (or porous belts 1060).
Figure 69 A to Figure 69 G schematically shows several device and method, and the solar battery cut whereby can be from more One or more additional mobile porous belts or mobile surface are removed and are transported in pore area 5230 (or porous belts 1060), Spacing between the solar battery of middle cutting increases.In the example of Figure 69 A, by one or more conveyer belts 5265 from porous With the solar battery 10 for collecting cutting in 5230, the conveyer belt is moved more quickly than than porous belts 5230, and thereby is increased and cut The spacing between solar battery 10 cut.For example, conveyer belt 5265 can be set between two porous belts 5230.Scheming In the example of 69B, by being slided along the sliding machine 5270 being arranged between two porous belts 5230, the chip 10 of cutting is divided It cuts.In this example, the battery 10 of each cutting is advanced to the low vacuum (for example, without vacuum) of manifold 5235 by porous belts 5230 In region, so that the battery of cutting is discharged into sliding machine 5270, while the non-cut portion of chip 45 is still by porous belts 5230 Fixing.Air cushion is provided between the battery 10 and sliding machine 5270 of cutting to be helped to ensure battery and sliding machine during operation not It is worn, and also the battery 10 cut is allowed quickly to slide away from chip 45, to allow faster cutting belt operation speed Degree.
In the example of Figure 69 C, rotation " great wheel " arranges the bracket 5275A in 5275 by the solar battery 10 of cutting One or more bands 5280 are transmitted to from band 5230.
In the example of Figure 69 D, rotating roller 5285 applies vacuum by actuator 5285A, to pick up from band 5230 It the solar battery 10 of cutting and places them on band 5280.
In the example of Figure 69 E, bracket actuator 5290 includes that bracket 5290A and the extension type being mounted on bracket cause Dynamic device 5290B.Bracket 5290A is translated back and forth, so that actuator 5290B to be positioned to remove the sun of cutting from band 5230 Energy battery 10, and then be arranged to the solar battery 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 battery 10 of cutting can be removed from band 5230 by mobile band, and then by bracket 5295A It is arranged to the solar battery 10 of cutting can be placed on band 5280, due to the path of band 5230, when bracket declines from band 5280 Latter situation can occur down or when pulling away.
In the example of Figure 69 G, inverted vacuum belt arrangement 5305 applies vacuum by one or more mobile porous belts, So that the solar battery 10 of cutting is transmitted to band 5280 from band 5230.
Figure 70 A to Figure 70 C provides 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 battery 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 battery 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 shows multiple vacuum ports 5315 on every manifold. The variation that vacuum is preferably controlled along the length of the upper surface of manifold may be implemented using multiple mouths for every manifold.For example, not Same vacuum port 5315 can be optionally connected to from different vacuum chambers (for example, 5260L and 5260H in Figure 66 and Figure 72 B), 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 shows The fullpath of porous belts 5230 is gone out, the porous belts surround wheel 5325, the upper surface of vacuum manifold 5235 and wheel 5320 circulations.For example, band 5230 can be driven by wheel 5320 or wheel 5325.
Figure 72 A and Figure 72 B show a part by porous belts 5230 for the variations of Figure 70 A to Figure 71 B and cover The perspective view of a part of the vacuum manifold 5235 of lid, wherein Figure 72 A provides the close-up view of a part of Figure 72 B.Figure 73A shows the top view of a part of the vacuum manifold 5235 covered by porous belts 5230, and Figure 73 B is shown along figure The identical vacuum manifold of the interception of line C-C shown in 73A and the cross-sectional view of porous belts arrangement.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 shows 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 shows a part of Figure 74 A Close-up view.
Figure 75 A to Figure 75 G is shown can be optionally for several exemplary bore patterns of vacuum porous belts 5230.These The common trait of pattern is, passes through the chip 45 of pattern or the sun of cutting perpendicular to long axis any position on tape of band The straight edge of energy battery 10 will be overlapped at least one hole 5255 in each belt always.For example, the pattern may include two The staggered square of row or more row or rectangular opening (Figure 75 A, Figure 75 D), the staggered round hole of two or more rows (Figure 75 B, figure 75E, Figure 75 G), two or more rows inclined groove (Figure 75 C, Figure 75 F) or any other suitable hole arrangement.
Subject description discloses the high-efficiency solar modules including silicon solar cell, and the silicon solar cell is to be overlapped Stacking mode is arranged and is electrically connected in series by the conductibility engagement between adjacent overlapping solar battery, to be formed super Battery, these superbatteries are arranged to the row of physical parallel in solar energy module.Superbattery may include any suitable quantity Solar battery.For example, the length of superbattery can substantially overall length or overall with across solar energy module, alternatively, two A or more superbattery can be arranged to end-to-end in a row.This arrangement conceals the electricity between solar battery mutually Even part, and therefore can be used to form the solar energy module with visual attraction, wherein adjacent series connection solar energy There are very little difference or no difference between battery.
This specification also disclose help to metallize stencilization to solar battery 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, which is open, is applied to solar cell surface for metallization material (for example, silver paste) On.For example, the template can be patterned stainless steel plate.Patterning opening in template is entirely free of masterplate material, and It and does not for example include any mesh or silk screen.Due to there is no mesh or web material in patterned template opening, can incite somebody to action " stencilization " used herein is distinguished with " silk-screen printing ".In contrast, in silk-screen printing, metallization material passes through The silk screen (for example, mesh) of patterned permeable material is supported to be applied in solar cell surface.The pattern includes not Metallization material is applied on solar battery by the opening in permeable material by the opening.Support silk screen extends through Cross the opening in impermeable material.
Compared with silk-screen printing, the stencilization of cell metallization pattern provides multiple advantages, including line width it is narrower, Length-width ratio (line height and the width) is higher, line uniformity and boundary more preferably and template than silk screen, the service life is longer.So And stencilization can not one-step print go out " island " needed in conventional three bus metalizations design.In addition, stencilization without Method one-step print goes out to need template to include the metallization pattern of unbraced structure, and the unbraced structure is during printing and unlimited In the plane in template, and it may interfere with the placement and use of template.For example, stencilization can not one-step print go out gold Categoryization pattern, wherein the metallization finger-shaped material being arranged in parallel is mutual by the bus extended perpendicular to finger-shaped material or other metallization features Even, because the single template of this design by include opening by being used for bus and be used for that the opening of finger-shaped material to define without support Plate tongue piece.The tongue piece will not be confined to the flat of template during printing because of the physical connection of the other parts with template In face, and plane will likely be removed and the placement of template and use is made to change.
Therefore, template is used to print conventional solar cell and needed with two different templates to front side metallization by trial It is printed twice or stencilization step is combined with screen printing step, will increase total printing of each battery in this way It number of steps and can also lead to the problem of " pressing ", when this problem occurs, two block letter are overlapped and lead to double-height.It is described Pressing is so that further processing complicates, and additional printing and correlation step will increase cost.Therefore, silk-screen printing is simultaneously Seldom it is used for solar battery.
As described further below, front surface metallization pattern as described herein may include not schemed by front surface metallization Case is connected to the array (for example, parallel lines) of mutual finger-shaped material.These patterns can carry out a template print with single template Brush, because required template does not need to include no support section or structure (for example, tongue piece).For standard-sized solar-electricity For the solar battery string that pond and solar battery wherein spaced apart are interconnected by brazing band, this front surface metallization pattern It may be unfavorable, because metallization pattern itself will not provide a large amount of current distributions or electrical conduction perpendicular to finger-shaped material.So And front surface metallization pattern as described herein extremely has in the stacking arrangement of rectangle solar battery as described herein It imitates, wherein the rear surface metallization pattern of a part and adjacent solar battery of the front surface metallization pattern of solar battery It is overlapped and conductive bond is to the rear surface metallization pattern.This is because the overlapping rear surface metal of adjacent solar battery The current distribution and electrical conduction that can be provided in front surface metallization pattern perpendicular to finger-shaped material are provided.
Turning now to attached drawing, to understand solar energy module described in this specification in more detail, Fig. 1 show with The viewgraph of cross-section for a string of solar batteries 10 that stacking mode arranges, is connected in series, the wherein end of adjacent solar battery It is overlapped and is electrically connected, to form superbattery 100.Each solar battery 10 includes semiconductor diode structure and connection To the electric contact of semiconductor diode structure, the electric current that solar battery 10 wherein generates when being irradiated by light can be touched by these electricity It puts and is supplied to external loading.
In the example of this specification description, each solar battery 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 is 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 figures Case provides electrical contact for the opposite sides of n-p junction.However, if applicable, other materials system, diode junction can be used Structure, physical size or electrical contact arrangement.For example, preceding (day side) surface metalation pattern may be provided at, p-type is conductive partly to be led On body layer, rear (in the shade side) surface metalation pattern be may be provided on the conductive semiconductor layer of n type.
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 front surface of a solar battery Metallization 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 adhesive tape and general solder.
Referring again to Fig. 2, Fig. 2 shows the exemplary rectangular solar energy modules 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 in parallel Six rows, long side be parallel to module long side orientation.The solar energy module of like configurations may also comprise the super of this side length 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 can be with Be substantially equal to the length of the short side of rectangle solar energy module, and the superbattery is arranged to parallel row, wherein they Long side be parallel to module short side orientation.In other other arrangements, each row may include two or more super electricity Pond, the superbattery can such as series electrical interconnections.Module can have short side and the length that length is for example, about 1 meter For for example, about 1.5 to about 2.0 meters of long side.Any other suitable shape can also be selected (for example, square for solar energy module Shape) and size.In this example, each superbattery includes 72 rectangle solar batteries, each rectangle solar battery Width is substantially equal to the 1/6 of the width of 156 millimeters (mm) squares or pseudo-square wafers, and length is about 156mm.It can also To use the rectangle solar battery of any other suitable quantity He any other suitable dimension.
Figure 76 shows the exemplary front surface gold be conducive on the rectangle solar battery 10 of stencilization as described above 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 is parallel to the short side for each other, being parallel to solar battery 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 battery The optional engagement pad 6020 of one row, wherein each engagement pad 6020 is located at the end of finger-shaped material 6015.In case of presence, often A engagement pad 6020 is electroconductive binder (ECA), solder or for conductively connecing the front surface of shown solar battery The independent globule for closing 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 any suitable pulvilliform shape also can be used.As using conduction to connect The substitution of the independent globule of condensation material, ECA, solder, conductive tape or its being arranged along the long side edge of solar battery The solid line or dotted line of his conductive bonding material can interconnect some or all of finger-shaped material, and solar battery is engaged To adjacent overlapping solar battery.This dotted line or solid line conductive bonding material can be with the conductibility pads of finger-shaped material end It is used in combination, or is used in the case where no such conductibility pad.
Solar battery 10 can have the width of for example, about length of 156mm, about 26mm, and therefore with the length of about 1:6 Width is than (length/long side length of short side).Can be prepared on the standard-sized silicon wafer of 156mm × 156mm six it is this too Positive energy battery is divided (cutting) then to provide the solar battery of diagram.It, can be by standard silicon in other variations It is about 19.5mm × 156mm that chip, which prepares eight sizes, therefore the solar battery 10 that length-width ratio is about 1:8.More generally, too Positive energy battery 10 can have the length-width ratio of for example, about 1:2 to about 1:20, and can be by standard size chip or any other suitable ruler Very little chip preparation.
Referring again to Figure 76, front surface metallization pattern may include about 60 to about 120, battery of for example every 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 the height on the surface perpendicular to solar battery, and for example, about 10 to about 50 microns.Finger-shaped material height It 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 Micron is bigger.The diameter (circle) or side length (square or rectangle) of pad 6020 can be for example, about 0.1mm to about 1mm, for example, about 0.5mm。
Rear surface metallization pattern for rectangle solar battery 10 may include for example being parallel to and adjacent to solar-electricity The discrete engagement pad of a row, the engagement pad or continuous bus of row interconnection of the long side edge in pond.However, such engagement pad or total Line is not required.If front surface metallization pattern includes that one edge in the long side along solar battery is arranged Engagement pad 6020, then the engagement pad row or bus (if present) in rear surface metallization pattern are along solar battery Another long side edge arrangement.After rear surface metallization pattern may also include all residues for substantially covering solar battery The metal back side contact on surface.The exemplary rear surface metallization pattern of Figure 77 A is including the discrete engagement pad 6025 of a row and such as Metal back side contact 6030 just described, and the exemplary rear surface metallization pattern of Figure 77 B include continuous bus 35 with And metal back side contact 6030 as just mentioned.
In covering formula superbattery, the front surface metallization pattern of solar battery is conductively joined to the adjacent sun The lap of the rear surface metallization pattern of energy battery.For example, if solar battery includes front surface metallized contact pad 6020, then each engagement pad 6020 can be aligned simultaneously (if present) with corresponding rear surface metallized contact pad 6025 And it is joined to the engagement pad, or be directed at and be joined to the bus with rear surface metallization bus 35 (if present), Or it is joined to the metal back side contact 6030 (if present) in adjacent solar battery.This can be for example by being arranged in The discrete parts (for example, globule) of conductive bonding material in each engagement pad 6020 are completed, or by being parallel to solar-electricity The edge in pond extends and optionally leads dotted line or solid line that two or more engagement pads in engagement pad 6020 are electrically interconnected Material is electrically engaged to complete.
If solar battery lacks front surface metallized contact pad 6020, for example, each front surface metallization figure Case finger-shaped material 6015 can be aligned (if present) with corresponding rear surface metallized contact pad 6025 and be joined to this Engagement pad is perhaps 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 for example by each finger-shaped material 6015 is arranged in overlapping end On conductive bonding material discrete parts (for example, globule) complete, or the edge by being parallel to solar battery extend simultaneously And optionally dotted line or solid line conductive bonding material that two or more finger-shaped materials in finger-shaped material 6015 are electrically interconnected are come At.
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 battery 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.The rear table of overlapping Face metallization and/or conductive bonding material can carry electric current for example to bypass the finger being destroyed in front surface metallization pattern Shape object or the interference of other finger-shaped materials.
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 can be applied using stencilization, silk-screen printing or any other suitable method.Metal back side contact 6030 can For example to be formed by aluminium.
Also any other suitable rear surface metallization pattern and material can be used.
Figure 78 shows the exemplary front surface metallization pattern on square solar battery 6300, the square sun Energy battery can be cut into multiple rectangle solar batteries, and each rectangle solar battery has front surface shown in Figure 76 golden Categoryization pattern.
Figure 79 shows the exemplary rear surface metallization pattern on square solar battery 6300, the square sun Energy battery can be cut into multiple rectangle solar batteries, and each rectangle solar battery has rear surface shown in Figure 77 A Metallization pattern.
Front surface metallization pattern as described herein can enable to raw in the solar battery of three printing machines of standard The stencilization of front surface metallization is carried out in producing line.For example, production process can include: use the first printing machine by silver paste mould Version printing is screen-printed in the rear surface of square solar battery, forms rear surface engagement pad or rear surface silver bus； Then rear surface silver paste is dried；Then by the stencilization of aluminium contact or the sun is screen-printed to using the second printing machine In the rear surface of energy battery；Then aluminium contact is dried；Then it is individually being made by third printing machine using single template Silver paste is printed onto the front surface of solar battery in version step, forms complete front surface metallization pattern；It is then right Silver paste is dried；Then solar battery is toasted.If applicable, these printings and correlation step can be by It carries out, or omits according to any other sequence.
Front surface metallization pattern is printed using template to make it possible to produce than that may produce by silk-screen printing 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 template in single stencilization step stencilization go out front surface metallization pattern make it possible to produce provide Have the front surface metallization pattern of uniform height, such as do not press, if be used in combination multiple templates or stencilization with Silk-screen printing carries out overlapping printing to define the feature extended in different directions, then is likely to occur pressing.
After front surface and rear surface metallization pattern are formed on square solar battery, each square solar energy Battery is segmented into two or more rectangle solar batteries.This is cut after can for example being drawn by laser incising come complete At, or pass through any other suitable method completion.Rectangle solar battery can be arranged simultaneously by the stacking mode of overlapping And be conductively joined to each other as described above, to form superbattery.Subject description discloses for manufacturing solar-electricity The method in pond, wherein there is reduced Carrier recombination to lose for the edge of solar battery, for example, not promoting carrier multiple The cut edge of conjunction.Solar battery can be such as silicon solar cell, and more particularly can be HIT silicon solar Battery.This specification also discloses stacking formula (overlapping) the superbattery arrangement of such solar battery.In such superbattery Single solar battery can have narrow rectangular geometry (for example, streaky shape), the wherein length of adjacent solar battery While being arranged to overlapping.
By with implementing present in such as high performance solar batteries of HIT solar battery etc in a manner of cost-benefit Significant challenge is, it is generally recognized that needs that high current is carried to phase from such high performance solar batteries using a large amount of metal The high performance solar batteries of adjacent series connection.Such high performance solar batteries are cut into narrow rectangle solar battery item, then With the solar battery that overlapping (stacking) pattern is arranged, wherein there is conduction between the lap of adjacent solar battery Property engagement so as to the series connection formed in superbattery solar battery string, thus by process simplification to reduce module Cost provides chance.Adjacent solar battery is interconnected into usually required regular worker with metal welding band this is because can eliminate Sequence.By reducing the electric current by solar battery (since single solar battery item can have than conventional smaller effective district Domain), and by the current path length between reduction adjacent solar battery, it is both likely to reduced resistance loss, so that This stacking method can also improve module efficiency.The electric current of reduction also can permit use inexpensively but the biggish conducting wire of resistance Costly but the less conducting wire of resistance (for example, silver), and performance is not lost significantly for (for example, copper) replacement.In addition, this folded Lid method can reduce invalid module region by eliminating interconnection welding and relevant contacts from the front surface of solar battery.
The solar battery of stock size can have for example having a size of from about 156 millimeters (mm) × about 156mm substantially just Rectangular front surface and rear surface.In stacking scheme just described, such solar battery is cut into two or more The solar battery item of (for example, two to 20) 156mm long.The potential challenges of this stacking method are, with conventional ruler Very little solar battery is compared, and the solar battery of stock size is cut into every effective coverage that sheet increases solar battery Battery edge length, so as to reduce performance due to the Carrier recombination because of edge.
For example, schematically show will be with about 156mm × about 156mm front surface and rear surface size by Figure 80 HIT solar battery 7100 is cut into several solar battery items (7100a, 7100b, 7100c and 7100d), each solar-electricity Pond item has having a size of from about 156mm × the narrow rectangular front face and rear surface of about 40mm.(the 156mm long side of solar battery item It extends in the page).In the example shown, HIT battery 7100 includes N-shaped single crystalline substrate 5105, and the substrate can for example have There are about 180 microns of thickness and having a size of from about 156mm × about 156mm preceding square surface and rear square surface.About 5 Intrinsic amorphous Si:H (a-Si:H) layer of nanometer (nm) thickness and the n+ of about 5nm thickness adulterate a-Si:H layers, and (two layers are all by reference mark Numbers 7110 instructions) it is arranged in the front surface of crystalline silicon substrate 7105.Transparent conducting oxide (TCO) film of about 65nm thickness 5120 are arranged on a-Si:H layer 7110.The conductive metal gridline 7130 being arranged on tco layer 7120 is solar-electricity The front surface in pond provides electric contact.(two layers are all for a-Si:H layers of the p+ doping of intrinsic a-Si:H layers of about 5nm thickness and about 5nm thickness Indicated by reference label 7115) it is arranged in the rear surface of crystalline silicon substrate 7105.The transparent conducting oxide of about 65nm thickness (TCO) film 7125 is arranged on a- Si:H layer 7115, and the conductive metal gridline 7135 being arranged on tco layer 7125 Electric contact is provided for the rear surface of solar battery.(above-mentioned size and material are intended to illustrate rather than limit, and if appropriate If, thus it is possible to vary).
Referring also to Figure 80, if HIT solar battery 7100 is cut to strip solar battery 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 battery.It is specific and Speech, the cutting surfaces 7145 of exposure n-p junction and the cutting surfaces (in layer 7110) of exposure heavy doping front surface area are not passivated, And Carrier recombination can be remarkably promoted.In addition, if conventional laser cutting or the laser incising process of drawing are used to cut too It is positive can battery 7100, then it is possible that thermal damage on the edge newly formed, such as the recrystallization 7150 of amorphous silicon.Due to Non-passivation edge and thermal damage, if using conventional manufacturing process, cutting solar battery 7100a, 7100b, The new edge expection formed on 7100c and 7100d can reduce the quasi- filling of short circuit current, open-circuit voltage and solar battery Factor.This performance for being equivalent to solar battery significantly reduces.
By method shown in Figure 81 A to Figure 81 J, can be cut into more to avoid by the HIT solar battery of stock size It is formed during narrow solar battery item and promotes compound edge.This method uses the solar battery 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 such as makes the TCO of preceding groove and the passivation of rear groove later.With heavy doping Region is compared, substrate doping it is sufficiently low so that knot in electronics reach substrate a possibility that not being passivated cut edge very It is small.In addition, the wafer dicing techniques of few scratch, laser heat divide (TLS), cut crystal can be used to, to avoid potential Thermal damage.
In the example shown in Figure 81 A to Figure 81 J, starting material is the square n type 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. (substrate of the formation solar battery of chip 7105).
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 To at a temperature of about 200 DEG C, by n+a-Si:H layers of the doping of intrinsic a-Si:H layers of about 5nm thickness and about 5nm thickness, (two layers are all Indicated by reference label 7110) it is deposited in the front surface of chip 7105.
Next, in Figure 81 C, for example, by PECVD, for example, about 150 DEG C to about 200 DEG C at a temperature of, will about Intrinsic a-Si:H layers of 5nm thickness deposit with p+a-Si:H layers of the doping (two layers are all indicated by reference label 7115) of about 5nm thickness In the rear surface of chip 7105.
Next, preceding a-Si:H layer 7110 forms isolated groove 7112 by patterning in Figure 81 D.Isolated groove 7112 usual penetrated beds 7110 can have 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 be used, 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, rear a-Si:H layer 7115 forms isolated groove 7117 by patterning in Figure 81 E.Similar to every From groove 7112, the usual penetrated bed 7115 of isolated groove 7117 is to reach chip 7105, and it is micro- to can have for example, about 100 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, the tco layer 7120 of about 65nm thickness is deposited on patterned preceding a-Si:H layer 7110 in Figure 81 F On.This can for example be completed by physical vapour deposition (PVD) (PVD) or ion plating.Tco layer 7120 fills a-Si:H layer 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, the tco layer 7125 of about 65nm thickness is deposited on patterned rear a-Si:H layer 7115 in Figure 81 G On.This can for example be completed by PVD or ion plating.Tco layer
Next, after deposition gridline 7130 and gridline 7135, for example, about 200 DEG C at a temperature of by the sun It can be battery solidification about 30 minutes.
Next, by cutting solar battery at the center of groove, solar battery is divided into too in Figure 82 J 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 with being directed at groove for solar battery.Alternatively, cutting can for example be swashed using as described above Photo-thermal dividing method is completed.
Obtained strip solar battery 7165a-7165d is different from strip solar battery 7100a- shown in Figure 80 7100d.Specifically, the edge of the a-Si:H layer 7110 in solar battery 7165a-7165d is formed by etching, and It is not to be formed by machine cuts.In addition, the edge of the layer 7110 in solar battery 7165a-7165d is passivated by tco layer. Therefore, solar battery 7165a-7165d lacks promotion Carrier recombination present in solar battery 7100a-7100d Cut edge.
It is intended to illustrate in conjunction with Figure 82 A to Figure 82 J method described, rather than limits.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 replacement step Rapid and material layer.For example, if the use of copper-plated metallization may include in the process additional patterning and seed layer Deposition step.In addition, groove 7160 can be formed in the rear surface of chip 7105, rather than brilliant in some variations In the front surface of piece 7105.
It is suitable for N-shaped and p-type HIT solar energy above in association with Figure 81 A to Figure 81 J and Figure 82 A to Figure 82 J method described Battery.Solar battery can be preceding transmitter or rear transmitter.It can preferably execute and divide on the side of not transmitter Journey.In addition, that is reduced on cut crystal edge using isolated groove and passivation layer as described above compound is also applied for it His solar cell design, and it is suitable for the solar battery using material system in addition to silicon.
Referring again to Fig. 1, the solar batteries 10 of a string of series connections for using the above method to be 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 by conductive bonding material in the region that they are overlapped This, the front surface metallization pattern of a solar battery 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 shows the exemplary rectangular sun 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.Super electricity The end-to-end pairs of arrangement in pond, and ten row's superbatteries are formed, wherein the row of superbattery and long side are parallel to solar energy module Short side orientation.In other variations, every row's superbattery 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 parallel to The long side of rectangle solar energy module is orientated, or is parallel to the side orientation of square solar energy module.In addition, solar energy module can Including 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 neighbouring superbattery of grade battery, there may be shown in Fig. 5 A Optional gap 210, to facilitate the front surface terminal contacts of center line formation and superbattery 100 along solar energy module Electrical contact.In the variations that every row's superbattery includes three or more superbatteries, it can be deposited between superbattery In additional gap, similarly to contribute to form the electrical contact with the front surface terminal contacts far from each side of solar energy module.
Fig. 5 B shows another exemplary rectangular solar energy module 300 including 10 rectangle superbatteries 100, wherein The length of each rectangle superbattery is approximately equal to solar energy module bond length.It is parallel that superbattery is arranged to its long side It is orientated in the short side of module.In other variations, the length of superbattery may be approximately equal to rectangle solar energy module The length of long side, and the superbattery is oriented such that their long side is parallel to the long side of solar energy module.It is super The length of battery also may be approximately equal to the side length of square solar energy module, and the superbattery is oriented such that it Long side be parallel to the side of solar energy module.In addition, solar module may include than shown in the example it is more or fewer this The superbattery of kind side length.
The solar energy module 200 that Fig. 5 B also shows Fig. 5 A is wherein respectively being arranged between the adjacent superbattery in superbattery Appearance in the case where very close to each other.Also any other suitable cloth of the superbattery 100 in solar energy module can be used It sets.
What the paragraph being exemplified below provided the disclosure adds unrestricted aspect.
1.A kind of solar energy module, comprising:
A rectangle of N (N >=25) of series connection or the solar battery string of substantial rectangular, the solar battery have Greater than about 10 volts of average voltage breakdown, the solar battery assemble one or more superbatteries, each superbattery Two or more solar batteries all including the arrangement that is in line, wherein the long side of adjacent solar battery is overlapped and with both Conductive and thermally conductive adhesive is conductively engaged with each other；
Wherein in the solar battery string, the solar battery group of N is less than without single solar battery or sum Individually parallel connection is electrically connected with bypass diode.
2.According to solar energy module described in clause 1, wherein N is greater than or equal to 30.
3.According to solar energy module described in clause 1, wherein N is greater than or equal to 50.
4.According to solar energy module described in clause 1, wherein N is greater than or equal to 100.
5.According to solar energy module described in clause 1, wherein adhesive forms engagement, institute between adjacent solar battery It states and is bonded on perpendicular to the thickness on solar battery direction less than or equal to about 0.1mm, and perpendicular to solar battery side Upward thermal conductivity is greater than or equal to about 1.5w/m/k.
6.According to solar energy module described in clause 1, wherein N number of solar battery is assembled to single super electricity Pond.
7.According to solar energy module described in clause 1, wherein superbattery is encapsulated in the polymer.
7A.According to solar energy module described in clause 7, wherein the polymer includes thermoplastic olefin polymer.
7B.According to solar energy module described in clause 7, wherein the polymer is clipped between glass front plate and back plate.
7C.According to solar energy module described in clause 7B, wherein the back plate includes glass.
8.According to solar energy module described in clause 1, wherein the solar battery is silicon solar cell.
9.A kind of solar energy module, comprising:
Superbattery, the superbattery substantially solar energy mould across the edge for being parallel to the solar energy module The whole length or width of block, the superbattery include the N number of rectangle being connected in series or the solar battery of substantial rectangular String, the solar battery have greater than about 10 volts of an average voltage breakdown, and the solar battery is in line arrangement, wherein phase The long side of adjacent solar battery is overlapped and is conductively engaged with each other with not only conductive but also thermally conductive adhesive；
Solar battery group and side wherein in the superbattery, without single solar battery or sum less than N The individually electrical connection in parallel of road diode.
10.According to solar energy module described in clause 9, wherein N > 24.
11.According to solar energy module described in clause 9, wherein superbattery has at least about 500mm in the flow direction Length.
12.According to solar energy module described in clause 9, wherein superbattery be encapsulated in be sandwiched in glass front plate and back plate it Between thermoplastic olefin polymer in.
13.A kind of superbattery, comprising:
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 parallel first Long side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar battery string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and including adjacent at least the one of the setting of the first long side A front surface engagement pad；And
Conductive back surface metalation pattern, setting is on the back surface and including adjacent at least the one of the setting of the second long side A back surface engagement pad；
Wherein the silicon solar cell is in line arrangement, the first long side of adjacent silicon solar cell and the second long side weight It is folded, and front surface engagement pad on adjacent silicon solar cell and back surface engagement pad are overlapped and are engaged by conductive adhesive It is joined to each other to conductivity of materials, so that silicon solar cell is electrically connected in series.And
Wherein the front surface metallization pattern of each silicon solar cell includes barrier, and the barrier is configured to super During the manufacture of battery, 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 superbattery described in clause 13, wherein it is adjacent for every a pair and overlapping silicon solar cell and It says, the barrier and another silicon solar cell in the front surface of a silicon solar cell in the silicon solar cell A part is overlapped and is hidden by the part, thus during the manufacture of superbattery, in conductive adhesive grafting material Conductive adhesive grafting material is substantially confined to the overlapping region of the front surface of silicon solar cell before solidifying.
15.According to superbattery described in clause 13, wherein the barrier includes continuous conductive threads, it is described continuous Conductive threads are parallel to the first long side and the whole length of the first long side of substantially advancing, the contact of wherein at least one front surface Pad is between continuous conductive threads and the first long side of solar battery.
16.According to superbattery described in clause 15, wherein front surface metallization pattern includes finger-shaped material, the finger-shaped material It is electrically connected at least one described front surface engagement pad and advances perpendicular to first long side, and continuous conductive threads Finger-shaped material is electrically interconnected, to provide multiple conductive paths from each finger-shaped material at least one front surface engagement pad.
17.According to 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 the more of independent barrier for each discrete engagement pad A feature, the multiple feature substantially will before the solidification of conductive adhesive grafting material during the manufacture of superbattery Conductive adhesive grafting material is confined to discrete engagement pad.
18.According to superbattery described in clause 17, wherein the adjacent corresponding discrete engagement pad of the independent barrier and Higher than the corresponding discrete engagement pad.
19.A kind of superbattery, comprising:
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 parallel first Long side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar battery string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and including adjacent at least the one of the setting of the first long side A front surface engagement pad；And
Conductive back surface metalation pattern, setting is on the back surface and including adjacent at least the one of the setting of the second long side A back surface engagement pad；
Wherein the silicon solar cell is in line arrangement, the first long side of adjacent silicon solar cell and the second long side weight It is folded, and front surface engagement pad on adjacent silicon solar cell and back surface engagement pad are overlapped and are engaged by conductive adhesive It is joined to each other to conductivity of materials, so that silicon solar cell is electrically connected in series.And
Wherein the back surface metallization pattern of each silicon solar cell includes barrier, which is configured to manufacturing During superbattery, 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 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 being formed individually for each discrete engagement pad Multiple features of barrier, the multiple feature solidify it during the manufacture of superbattery, in conductive adhesive grafting material It is preceding that conductibility grafting material is substantially confined to discrete engagement pad.
21.According to superbattery described in clause 20, wherein the adjacent corresponding discrete engagement pad of the independent barrier and Higher than the corresponding discrete engagement pad.
22.A method of making solar battery string, which comprises
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 Multiple rectangle silicon solar cells, 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 engage To each other, so that solar battery is electrically connected in series；
Wherein the multiple rectangle silicon solar cell includes: that there are two at least one rectangle solar-electricities of chamfering for tool Pond, the chamfering correspond to the turning of pseudo-square wafers or a part at turning；And respectively lack one or more of chamfering A rectangle silicon solar cell.And
Wherein by being greater than the width vertical with including the long axis of rectangle silicon solar cell of chamfering and lacking chamfering Rectangle silicon solar cell the vertical width of long axis, and to the spacing between the parallel lines along cutting pseudo-square wafers It is selected, to compensate chamfering；Therefore, multiple rectangular silicons during the work of solar battery string, in solar battery string The front surface of each of solar battery battery, the area being exposed under sunlight are substantially equal.
23.A kind of solar battery string, comprising:
The multiple silicon solar cells for the arrangement that is in line, wherein the end of adjacent solar battery is overlapped and conductively connects It closes each other, so that solar battery is electrically connected in series；
Wherein at least one silicon solar cell has chamfering, and the chamfering, which corresponds to from it, cuts silicon solar cell The turning of dead square silicon wafer or a part at turning；At least one silicon solar cell lacks chamfering；In solar battery It goes here and there during work, the area that the front surface of each silicon solar cell is exposed under sunlight is substantially equal.
24.A method of making two or more solar battery strings, which comprises
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 than first a rectangle silicon solar cells with chamfering, and lack more than second a rectangle silicon solar cells of chamfering, Described in chamfering correspond to dead square silicon wafer turning or turning a part, a rectangular silicon solar-electricity more than described second Each battery in pond has the first length, and the span of first length is equal to the full duration of dead square silicon wafer；
From each of more than first a rectangle silicon solar cells battary removal chamfering, and form the third for lacking chamfering Multiple rectangle silicon solar cells, 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, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and more than second a rectangle silicon solar cells are electrically connected in series, width is consequently formed and is equal to The solar battery string of first length；And
The multiple rectangle silicon solar cells of third are in line arrangement, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and the multiple rectangle silicon solar cells of third are electrically connected in series, width is consequently formed and is equal to The solar battery string of second length.
25.A method of making two or more solar battery strings, which comprises
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 than first a rectangle silicon solar cells with chamfering, and lack more than second a rectangle silicon solar cells of chamfering, Described in chamfering correspond to dead square silicon wafer turning or turning a part；
More than first a rectangle silicon solar cells are in line arrangement, the long side of adjacent rectangle silicon solar cell is overlapped And be 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, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and more than second a rectangle silicon solar cells are electrically connected in series.
26.A method of making solar energy module, which comprises
Along each of a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to chip, To form multiple rectangle silicon solar cells with chamfering by the multiple dead square silicon wafer, and lack 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 Superbattery only includes the rectangle silicon solar cell for lacking chamfering of arrangement of being in line, wherein the rectangular silicon solar battery Long side be overlapped and be conductively joined to each other, so that silicon solar cell is electrically connected in series；
It arranges at least some of the rectangle silicon solar cell with chamfering, forms more than second a superbatteries, each Superbattery only includes the straight rectangle silicon solar cell with chamfering of arrangement, wherein the rectangular silicon solar battery Long side be overlapped and be conductively joined to each other, so that silicon solar cell is electrically connected in series；And
Superbattery is arranged to form solar energy module with the parallel superbattery row for being substantially equal length Front surface, wherein each row only includes superbattery more than first in a superbattery or only includes more than second a superbatteries In superbattery.
27.According to 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 includes Superbattery more than first in a superbattery.
28.According to solar energy module described in clause 27, wherein solar energy module includes six row's superbattery in total.
29.A kind of superbattery, comprising:
The multiple silicon solar cells for the arrangement that is in line in a first direction, wherein the end weight of adjacent silicon solar cell It folds and is conductively joined to each other, so that silicon solar cell is electrically connected in series；And
Elongated flexible electrical interconnection, long axis is parallel to the second direction orientation vertical with the first direction, described Elongated flexible electrical interconnection has following features: at three or more discrete positions arranged along second direction, passing The property led it is joined to the front surface or back surface of the silicon solar cell of end one；At least extending end sun in a second direction The full duration of energy battery；Front surface or rear surface measurement, conductor thickness perpendicular to end silicon solar cell are 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 mention For flexibility, the flexibility within the temperature range of about -40 DEG C to about 85 DEG C, reconcile end silicon solar cell and the electrical interconnection it Between differential expansion in a second direction.
30.According to superbattery described in clause 29, wherein front surface and rear table perpendicular to end silicon solar cell Planar survey, the conductor thickness of flexible electrical interconnection is less than or equal to about 30 microns.
31.According to 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 with the superbattery in solar energy module and Adjacent at least the second superbattery.
32.According to 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, comprising:
Multiple superbatteries, the multiple superbattery be arranged to span equal to module width two or more are flat Capable 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, so that silicon solar cell is electrically connected in series；
Wherein at least one end of the first superbattery adjacent with the edge of module in first row is via flexible electrical interconnection And it is electrically connected to one end of the second superbattery adjacent with the same edge of module in second row, the flexibility electrical interconnection tool There are following features: being joined to the front surface of the first superbattery by electroconductive binder grafting material at multiple discrete positions；It is flat Row extends in the edge of module；Its at least part is folded in around described one end of the first superbattery, thus before module Side is invisible.
34.According to 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 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 and arranges Between gap position and width, and the white portion of the back plate is invisible by the gap between the row.
36.A method of making solar battery string, which comprises
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, thus 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 On the silicon solar cell that a or multiple quarters draw；
Silicon solar cell is divided along line drawing is carved, obtains the silicon solar cell of multiple rectangles, the silicon of each rectangle is too Position adjacent with long side on its front surface is arranged in all some electroconductive binder grafting materials on positive energy battery；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell with folded Lid mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Solidify conductive bonding material, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, and by this A little batteries are electrically connected in series.
37.A method of making solar battery string, which comprises
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, thus Multiple rectangular areas are defined on silicon solar cell, each solar battery includes the bottom of top surface and opposite facing setting Surface；
Electroconductive binder grafting material is applied to the multiple portions of the top surface of one or more silicon solar cells On；
Apply vacuum between the bottom surface and curved support surface of one or more silicon solar cells, so that one A or multiple silicon solar cells are bent against curved support surface, and cause one or more silicon solar cells along quarter Line drawing cutting, 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 with folded Lid mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Solidify conductive bonding material, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, and by this A little batteries are electrically connected in series.
38.One or more silicon are applied to too according to 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 and draw Line.
39.According to method described in clause 37, including being used on each battery in one or more silicon solar cells Laser mark one or more quarter line drawing, electroconductive binder grafting material is then applied to one or more silicon solar cells On.
40.A kind of solar energy module, comprising:
Multiple superbatteries, the multiple superbattery are arranged to two or more parallel rows, form solar energy The front surface of module, each superbattery include the multiple silicon solar cells of arrangement of being in line, wherein adjacent silicon solar-electricity The end in pond is overlapped and is conductively joined to each other, to silicon solar cell is electrically connected in series, each superbattery packet Include the front surface terminal contacts being located at superbattery one end and at the opposite end of superbattery with the back of opposite polarity Face extremities contact；
Wherein first row superbattery includes the first superbattery, and first superbattery is arranged so that its front surface Terminal contacts are adjacent and parallel to the first edge of solar energy module, and solar energy module includes the first flexible electrical interconnection, Described first flexible electrical interconnection is elongated and with following features: the first edge for being parallel to solar energy module extends； Front surface terminal contacts of the conductive bond to the first superbattery；Only occupy neighbouring solar energy mould in the front surface of solar energy module The narrower part of block first edge；It is measured perpendicular to the first edge of solar energy module, no more than about 1 centimetre of width.
41.According to solar energy module described in clause 40, wherein a part of the first flexible electrical interconnection surrounds and the first surpasses The end nearest from solar energy module first edge of grade battery extends, and is located at behind the first superbattery.
42.According to 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 it is thicker Part.
43.According to solar energy module described in clause 40, wherein first flexible interconnection includes conductive bond described in The strip part of the front surface terminal contacts of first superbattery, and it is parallel to the first edge extension of solar energy module Winding band part.
44.According to solar energy module described in clause 40, wherein second row superbattery includes the second superbattery, described Second superbattery is arranged so that its first edge of front surface terminal contacts adjacent and parallel to solar energy module, Er Qie The front surface terminal contacts of one superbattery are electrically connected to the front surface of the second superbattery via the first flexible electrical interconnection Terminal contacts.
45.According to 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 second Flexible electrical interconnection, the described second flexible electrical interconnection are elongated and have following features: being parallel to solar energy module Second edge extends；Conductively it is joined to the back surface terminal contacts of the first superbattery；And it is fully located at superbattery Behind.
46.According to solar energy module described in clause 45, in which:
Second row superbattery includes the second superbattery, and second superbattery is arranged such that its front surface end Terminal contacts are 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 super electricity via the first flexible electrical interconnection The front surface terminal contacts in pond；And
The back surface terminal contacts of first superbattery are electrically connected to the second super electricity via the second flexible electrical interconnection The back surface terminal contacts in pond.
47.According to solar energy module described in clause 40, comprising:
Second superbattery, second superbattery are arranged in first row superbattery and the first superbattery Series 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: being parallel to The second edge of solar energy module extends；Conductively it is joined to the back surface terminal contacts of the first superbattery；And completely Behind the superbattery.
48.According to solar energy module described in clause 47, in which:
Second row superbattery includes the third superbattery and the 4th superbattery of arranged in series, wherein the super electricity of third The front surface terminal contacts in pond are 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 the super electricity of third via the first flexible electrical interconnection The front surface terminal contacts in pond, and the back surface terminal contacts of the second superbattery are electrically connected via the second flexible electrical interconnection It is connected to the back surface terminal contacts of the 4th superbattery.
49.According to solar energy module described in clause 40, wherein superbattery is arranged in white back plate, after the white Plate includes parallel dark-coloured striped, and the position of the dead color striped and width correspond to gap between parallel superbattery row Position and width, and the white portion of the back plate is invisible by the gap between the row.
50.According to solar energy module described in clause 40, wherein first be located 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 solar energy module described in clause 40, in which:
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 parallel first Long side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar battery string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and multiple finger-like including extending perpendicular to long side Rows of multiple discrete front surface engagement pads are arranged in object and neighbouring first long side, and each front surface engagement pad is electrically connected to described At least one of finger-shaped material；And
Conductive back surface metalation pattern, setting are arranged rows of more on the back surface and including neighbouring second long side A discrete back surface engagement pad；And
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 surface on adjacent silicon solar cell Engagement pad is aligned with each other, is overlapped and is conductively joined to each other by conductive adhesive grafting material, thus by silicon solar Battery is electrically connected in series.
52.According to solar energy module described in clause 51, wherein the front surface metallization pattern of each silicon solar cell Including multiple thin conducting wires that adjacent discrete front surface engagement pad is electrically interconnected, and each thin conducting wire ratio is perpendicular to solar-electricity The discrete engagement pad width that the long side in pond measures is thinner.
53.According to 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 and connects One or more barriers of touch pad.
54.According to 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 and connects One or more barriers of touch pad.
55.A method of making solar energy module, which comprises
Assembling multiple superbatteries, each superbattery includes the multiple rectangle silicon solar cells of arrangement of being in line, And end is overlapped in a manner of covering in the long side of adjacent rectangle silicon solar cell；
Apply heat and pressure to superbattery, and makes to be arranged between the overlapped ends of adjacent rectangle silicon solar cell Conductive bonding material solidification, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, and by these battery strings Connection 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 method described in clause 55, it is included in front of applying heat and pressure to lamination stack to form laminate structures, 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 portion Divide cured superbattery, as the intermediate products before formation laminate structures.
57.According to method described in clause 56, wherein when during assembling superbattery by each additional rectangular silicon too When positive energy battery is added to superbattery, first make leading between newly added solar battery and adjacent Chong Die solar battery Electric adhesive bond material solidification or partially cured, then another rectangle silicon solar cell is added to superbattery.
58.According to method described in clause 56, including in same step by conductive bond material all in superbattery Material is cured or partially cured.
59.According to method described in clause 56, comprising:
Before applying heat and pressure to lamination stack to form laminate structures, by the way that heat and pressure are applied to superbattery Carry out the partially cured conductive bonding material, so that the cured superbattery in part is formed, before formation laminate structures Intermediate products；And
While applying heat and pressure to lamination stack to form laminate structures, the solidification of conductive bonding material is completed.
60.According to method described in clause 55, including applying heat and pressure to lamination stack to form the same of laminate structures When, conductive bonding material is solidified, 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 method described in clause 55, including by the cutting of one or more silicon solar cells, and The silicon solar cell of rectangle is provided.
62.It is before being included in the one or more silicon solar cells of cutting that conduction is viscous according to method described in clause 61 Mixture grafting material is applied to one or more of silicon solar cells, in order to provide electroconductive binder engagement is coated in advance The rectangle silicon solar cell of material.
63.One or more silicon are applied to too according to method described in clause 62, including by electroconductive binder grafting material On positive energy battery, one or more then is marked with laser on each battery in one or more of silicon solar cells Line, then one or more of silicon solar cells are cut along line drawing is carved.
64.According to method described in clause 62, including each battery 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 solars On battery, then by one or more of silicon solar cells along quarter line drawing cutting.
65.According to method described in clause 62, wherein electroconductive binder grafting material is applied to one or more silicon too On the top surface of each battery in positive energy battery, without being applied to each of one or more of silicon solar cells In the bottom surface of the opposite facing setting of battery, including the bottom surface and bending in one or more of silicon solar cells Support surface between apply vacuum so that one or more of silicon solar cells are bent against curved support surface, To which one or more of silicon solar cells be cut along line drawing is carved.
66.According to method described in clause 61, it is included in the one or more silicon solar cells of cutting to provide rectangular silicon After solar battery, electroconductive binder grafting material is applied on rectangle silicon solar cell.
67.According to 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, comprising:
Multiple superbatteries, the multiple superbattery are arranged to two or more parallel rows, form solar energy The front surface of module, each superbattery include the multiple silicon solar cells of arrangement of being in line, wherein adjacent silicon solar-electricity The end in pond is overlapped and is conductively joined to each other, to silicon solar cell is electrically connected in series, each superbattery packet Include the front surface terminal contacts being located at superbattery one end and at the opposite end of superbattery with the back of opposite polarity Face extremities contact；
Wherein first row superbattery includes the first superbattery, and first superbattery is arranged so that its front surface Terminal contacts are adjacent and parallel to the first edge of solar energy module, and solar energy module includes the first flexible electrical interconnection, Described first flexible electrical interconnection is elongated and with following features: the first edge for being parallel to solar energy module extends； Front surface terminal contacts of the conductive bond to the first superbattery；Only occupy neighbouring solar energy mould in the front surface of solar energy module The narrower part of block first edge；It is measured perpendicular to the first edge of solar energy module, no more than about 1 centimetre of width.
2A.According to solar energy module described in clause 1A, wherein a part of the first flexible electrical interconnection surrounds and the first surpasses The end nearest from solar energy module first edge of grade battery extends, and is located at behind the first superbattery.
3A.According to 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 it is thicker Part.
4A.According to solar energy module described in clause 1A, wherein first flexible interconnection includes conductive bond described in The strip part of the front surface terminal contacts of first superbattery, and it is parallel to the first edge extension of solar energy module Winding band part.
5A.According to solar energy module described in clause 1A, wherein second row superbattery includes the second superbattery, described Second superbattery is arranged so that its first edge of front surface terminal contacts adjacent and parallel to solar energy module, Er Qie The front surface terminal contacts of one superbattery are electrically connected to the front surface of the second superbattery via the first flexible electrical interconnection Terminal contacts.
6A.According to 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 second Flexible electrical interconnection, the described second flexible electrical interconnection are elongated and have following features: being parallel to solar energy module Second edge extends；Conductively it is joined to the back surface terminal contacts of the first superbattery；And it is fully located at superbattery Behind.
7A.According to solar energy module described in clause 6A, in which:
Second row superbattery includes the second superbattery, and second superbattery is arranged such that its front surface end Terminal contacts are 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 super electricity via the first flexible electrical interconnection The front surface terminal contacts in pond；And
The back surface terminal contacts of first superbattery are electrically connected to the second super electricity via the second flexible electrical interconnection The back surface terminal contacts in pond.
8A.According to solar energy module described in clause 1A, comprising:
Second superbattery, second superbattery are arranged in first row superbattery and the first superbattery Series 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: being parallel to The second edge of solar energy module extends；Conductively it is joined to the back surface terminal contacts of the first superbattery；And completely Behind the superbattery.
9A.According to solar energy module described in clause 8A, in which:
Second row superbattery includes the third superbattery and the 4th superbattery of arranged in series, wherein the super electricity of third The front surface terminal contacts in pond are 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 the super electricity of third via the first flexible electrical interconnection The front surface terminal contacts in pond, and the back surface terminal contacts of the second superbattery are electrically connected via the second flexible electrical interconnection It is connected to the back surface terminal contacts of the 4th superbattery.
10A.According to 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 solar energy module described in clause 1A, wherein at least a pair of of superbattery is in line cloth in a row It sets, and this connects one rear surface contact jaw in superbattery adjacent to this to another the rear surface in superbattery Contravention.
12A.According to solar energy module described in clause 1A, in which:
At least a pair of of superbattery is in line arrangement in a row, and the adjacent end of the two superbatteries is with phase The terminal contacts of reversed polarity；
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 Front surface is not blocked between the overlapping end of battery and.
13A.According to solar energy module described in clause 1A, wherein superbattery is arranged in white back plate, the white Backer board 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 backer board is invisible by the gap between the row.
14A.According to solar energy module described in clause 1A, wherein first be located 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.
15A.According to solar energy module described in clause 1A, in which:
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 parallel first Long side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar battery string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and multiple finger-like including extending perpendicular to long side Rows of multiple discrete front surface engagement pads are arranged in object and neighbouring first long side, and each front surface engagement pad is electrically connected to described At least one of finger-shaped material；And
Conductive back surface metalation pattern, setting are arranged rows of more on the back surface and including neighbouring second long side A discrete back surface engagement pad；And
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 surface on adjacent silicon solar cell Engagement pad is aligned with each other, is overlapped and is conductively joined to each other by conductive adhesive grafting material, thus by silicon solar Battery is electrically connected in series.
16A.According to solar energy module described in clause 15A, the figure wherein front surface of each silicon solar cell metallizes 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 solar energy The discrete engagement pad width that the long side of battery measures is thinner.
17A.According to 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 formed around it is each it is discrete before The barrier of surface engagement pad.
18A.According to 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, which is formed, surrounds each discrete back The barrier of surface engagement pad.
19A.According to solar energy module described in clause 15A, wherein discrete back surface engagement pad is that discrete silver-colored back surface connects 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 does not include at any position below not a part Chong Die with adjacent silicon solar cell in solar battery front surface Silver contact.
20A.A kind of solar energy module, comprising:
Multiple superbatteries, each superbattery includes the multiple silicon solar cells of arrangement of being in line, wherein adjacent The end of silicon solar cell is overlapped and is conductively joined to each other, so that silicon solar cell is 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 parallel first Long side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar battery string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and multiple finger-like including extending perpendicular to long side Rows of multiple discrete front surface engagement pads are arranged in object and neighbouring first long side；
It is electrically connected to each front surface engagement pad of at least one finger-shaped material in the finger-shaped material；And
Conductive back surface metalation pattern, setting are arranged rows of more on the back surface and including neighbouring second long side A discrete back surface engagement pad；
Wherein in each superbattery, the silicon solar cell is in line arrangement, wherein adjacent silicon solar cell The first long side and the overlapping of the second long side, and corresponding discrete front surface engagement pad and discrete back on adjacent silicon solar cell Surface engagement pad is aligned with each other, is overlapped and is conductively joined to each other by conductive adhesive grafting material, thus too by silicon Positive energy battery is electrically connected in series.And
Wherein superbattery be arranged to substantially across solar energy module length or width it is single row or two or More parallels, 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 solar energy module described in clause 20A, wherein discrete back surface engagement pad is that discrete silver-colored back surface connects 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 does not include at any position below not a part Chong Die with adjacent silicon solar cell in solar battery front surface Silver contact.
22A.According to solar energy module described in clause 20A, the figure wherein front surface of each silicon solar cell metallizes 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 solar energy The discrete engagement pad width that the long side of battery measures is thinner.
23A.According to 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 formed around it is each it is discrete before The barrier of surface engagement pad.
24A.According to 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, which is formed, surrounds each discrete back The barrier of surface engagement pad.
25A.A kind of superbattery, comprising:
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 parallel first Long side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar battery string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and multiple finger-like including extending perpendicular to long side Rows of multiple discrete front surface engagement pads are arranged in object and neighbouring first long side, and each front surface engagement pad is electrically connected to described At least one of finger-shaped material；And
Conductive back surface metalation pattern, setting are arranged rows of more on the back surface and including neighbouring second long side A discrete silver-colored back surface engagement pad；
Wherein the silicon solar cell is in line arrangement, wherein the first long side of adjacent silicon solar cell and second long Side overlapping, and corresponding discrete front surface engagement pad and discrete back surface engagement pad are right each other on adjacent silicon solar cell Quasi-, overlapping is simultaneously conductively joined to each other by conductive adhesive grafting material, so that silicon solar cell series connection is electrically connected It connects.
26A.According to solar energy module described in clause 25A, wherein discrete back surface engagement pad is that discrete silver-colored back surface connects 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 does not include at any position below not a part Chong Die with adjacent silicon solar cell in solar battery front surface Silver contact.
27A.According to solar battery string described in clause 25A, wherein front surface metallization pattern includes 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 battery Discrete engagement pad width is thinner.
28A.According to solar battery string described in clause 25A, wherein conductive adhesive grafting material passes 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 discrete The barrier of front surface engagement pad.
29A.According to solar battery string described in clause 25A, wherein conductive adhesive grafting material passes 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 discrete The barrier of back surface engagement pad.
30A.According to solar battery string described in clause 25A, wherein conductive adhesive grafting material have be lower than or Glass transition temperature equal to about 0 DEG C.
31A.A method of making solar energy module, which comprises
Assembling multiple superbatteries, each superbattery includes the multiple rectangle silicon solar cells of arrangement of being in line, And end is overlapped in a manner of covering in the long side of adjacent rectangle silicon solar cell；
Apply heat and pressure to superbattery, and makes to be arranged between the overlapped ends of adjacent rectangle silicon solar cell Conductive bonding material solidification, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, and by these battery strings Connection 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 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 method described in clause 32A, wherein when during assembling superbattery by each additional rectangular silicon When solar battery is added to superbattery, first make between newly added solar battery and adjacent Chong Die solar battery Electroconductive binder grafting material is cured or partially cured, then another rectangle silicon solar cell is added to superbattery.
34A.According to method described in clause 32A, including in same step by conductive bond all in superbattery Material solidification is partially cured.
35A.According to method described in clause 32A, comprising:
Before applying heat and pressure to lamination stack to form laminate structures, by the way that heat and pressure are applied to superbattery Carry out the partially cured conductive bonding material, so that the cured superbattery in part is formed, before formation laminate structures Intermediate products；And
While applying heat and pressure to lamination stack to form laminate structures, the solidification of conductive bonding material is completed.
36A.According to method described in clause 31A, including applying heat and pressure to lamination stack to form laminate structures Meanwhile conductive bonding material is solidified, without formed the superbattery that is cured or partially cured as formed laminate structures it Preceding intermediate products.
37A.It is in a rectangular shape according to method described in clause 31A, including by the cutting of one or more silicon solar cells, And provide the silicon solar cell of rectangle.
38A.According to 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, connects in order to provide electroconductive binder is coated in advance The rectangle silicon solar cell of condensation material.
39A.One or more silicon are applied to according to method described in clause 38A, including by electroconductive binder grafting material On solar battery, one or more then 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.
40A.According to method described in clause 38A, including each electricity in one or more of silicon solar cells Chi Shangyong laser marks one or more line, and 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.
41A.According to method described in clause 38A, wherein electroconductive binder grafting material is applied to one or more silicon It is every in one or more of silicon solar cells without being applied on the top surface of each battery in solar battery In the bottom surface of the opposite facing setting of a battery, including in one or more of silicon solar cells bottom surface with it is curved Apply vacuum between bent support surface, so that one or more of silicon solar cells are curved against curved support surface Song, so that one or more of silicon solar cells be cut along line drawing is carved.
42A.According to 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 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 making solar battery, which comprises
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, thus Multiple rectangular areas are defined on silicon solar cell；It, will in one or more positions of the long side of neighbouring each rectangular area Electroconductive binder grafting material is applied on one or more silicon solar cells carved and drawn；
Silicon solar cell is divided along line drawing is carved, obtains the silicon solar cell of multiple rectangles, the silicon of each rectangle is too Position adjacent with long side on its front surface is arranged in all some electroconductive binder grafting materials on positive energy battery；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell with folded Lid mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Solidify conductive bonding material, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, and by this A little batteries are electrically connected in series.
45A.A method of making solar battery, which comprises
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, thus Multiple rectangular areas are defined on silicon solar cell, each solar battery includes the bottom of top surface and opposite facing setting Surface；
Electroconductive binder grafting material is applied to the multiple portions of the top surface of one or more silicon solar cells On；
Apply vacuum between the bottom surface and curved support surface of one or more silicon solar cells, so that one A or multiple silicon solar cells are bent against curved support surface, and cause one or more silicon solar cells along quarter Line drawing cutting, 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 with folded Lid mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Solidify conductive bonding material, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, and by this A little batteries are electrically connected in series.
46A.A method of making solar battery, which comprises
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 Multiple rectangle silicon solar cells, 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 engage To each other, so that solar battery is electrically connected in series；
Wherein the multiple rectangle silicon solar cell includes: that there are two at least one rectangle solar-electricities of chamfering for tool Pond, the chamfering correspond to the turning of pseudo-square wafers or a part at turning；And respectively lack one or more of chamfering A rectangle silicon solar cell.And
Wherein by being greater than the width vertical with including the long axis of rectangle silicon solar cell of chamfering and lacking chamfering Rectangle silicon solar cell the vertical width of long axis, and to the spacing between the parallel lines along cutting pseudo-square wafers It is selected, to compensate chamfering；Therefore, multiple rectangular silicons during the work of solar battery string, in solar battery string The front surface of each of solar battery battery, the area being exposed under sunlight are substantially equal.
47A.A kind of superbattery, comprising:
The multiple silicon solar cells for the arrangement that is in line, wherein the end of adjacent solar battery is overlapped and conductively connects It closes each other, so that solar battery is electrically connected in series；
Wherein at least one silicon solar cell has chamfering, and the chamfering, which corresponds to from it, cuts silicon solar cell The turning of dead square silicon wafer or a part at turning；At least one silicon solar cell lacks chamfering；In solar battery It goes here and there during work, the area that the front surface of each silicon solar cell is exposed under sunlight is substantially equal.
48A.A method of making two or more superbatteries, which comprises
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 than first a rectangle silicon solar cells with chamfering, and lack more than second a rectangle silicon solar cells of chamfering, Described in chamfering correspond to dead square silicon wafer turning or turning a part, a rectangular silicon solar-electricity more than described second Each battery in pond has the first length, and the span of first length is equal to the full duration of dead square silicon wafer；
From each of more than first a rectangle silicon solar cells battary removal chamfering, and form the third for lacking chamfering Multiple rectangle silicon solar cells, 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, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and more than second a rectangle silicon solar cells are electrically connected in series, width is consequently formed and is equal to The solar battery string of first length；And
The multiple rectangle silicon solar cells of third are in line arrangement, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and the multiple rectangle silicon solar cells of third are electrically connected in series, width is consequently formed and is equal to The solar battery string of second length.
49A.A method of making two or more superbatteries, which comprises
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 than first a rectangle silicon solar cells with chamfering, and lack more than second a rectangle silicon solar cells of chamfering, Described in chamfering correspond to dead square silicon wafer turning or turning a part；
More than first a rectangle silicon solar cells are in line arrangement, the long side of adjacent rectangle silicon solar cell is overlapped And be 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, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and more than second a rectangle silicon solar cells are electrically connected in series.
50A.A kind of solar energy module, comprising:
N >=25 rectangle of a string of series connections or the solar battery of substantial rectangular, the solar battery are average With greater than about 10 volts of breakdown voltage, the solar battery assembles one or more superbatteries, each superbattery Two or more solar batteries all including the arrangement that is in line, wherein the long side of adjacent solar battery is overlapped and with both Conductive and thermally conductive adhesive is conductively joined to each other；
Wherein in the solar battery string, the solar battery group of N is less than without single solar battery or sum Individually parallel connection is electrically connected with bypass diode.
51A.According to solar energy module described in clause 50A, wherein N is greater than or equal to 30.
52A.According to solar energy module described in clause 50A, wherein N is greater than or equal to 50.
53A.According to solar energy module described in clause 50A, wherein N is greater than or equal to 100.
54A.According to solar energy module described in clause 50A, wherein adhesive is formed between adjacent solar battery and is connect It closes, it is described to be bonded on perpendicular to the thickness on solar battery direction less than or equal to about 0.1mm, and perpendicular to solar-electricity Thermal conductivity on the direction of pond is greater than or equal to about 1.5w/m/k.
55A.According to solar energy module described in clause 50A, wherein N number of solar battery be assembled to it is single super Battery.
56A.According to solar energy module described in clause 50A, wherein the solar battery is silicon solar cell.
57A.A kind of solar energy module, comprising:
Superbattery, the superbattery substantially solar energy mould across the edge for being parallel to the solar energy module The whole length or width of block, the superbattery include the N number of rectangle being connected in series or the solar battery of substantial rectangular String, the solar battery have greater than about 10 volts of an average voltage breakdown, and the solar battery is in line arrangement, wherein phase The long side of adjacent solar battery is overlapped and is conductively engaged with each other with not only conductive but also thermally conductive adhesive；
Solar battery group and side wherein in the superbattery, without single solar battery or sum less than N The individually electrical connection in parallel of road diode.
58A.According to solar energy module described in clause 57A, wherein N > 24.
59A.According to 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, comprising:
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 parallel first Long side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar battery string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and including adjacent at least the one of the setting of the first long side A front surface engagement pad；And
Conductive back surface metalation pattern, setting is on the back surface and including adjacent at least the one of the setting of the second long side A back surface engagement pad；
Wherein the silicon solar cell is in line arrangement, the first long side of adjacent silicon solar cell and the second long side weight It is folded, and front surface engagement pad on adjacent silicon solar cell and back surface engagement pad are overlapped and are engaged by conductive adhesive It is joined to each other to conductivity of materials, so that silicon solar cell is electrically connected in series.And
Wherein the front surface metallization pattern of each silicon solar cell includes barrier, which is configured to manufacturing During superbattery, 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 superbattery described in clause 60A, wherein adjacent for every a pair and overlapping silicon solar cell For, barrier and another silicon solar cell in the front surface of a silicon solar cell in the silicon solar cell A part be overlapped and hidden by the part, thus during the manufacture of superbattery, engage material in conductive adhesive Conductive adhesive grafting material is substantially confined to the overlapping region of the front surface of silicon solar cell by material before solidifying.
62A.According to superbattery described in clause 60A, 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 connect Touch pad is between continuous conductive threads and the first long side of solar battery.
63A.According to superbattery described in clause 62A, wherein front surface metallization pattern includes finger-shaped material, the finger-like Object is electrically connected at least one described front surface engagement pad and advances perpendicular to first long side, and continuous conductibility Finger-shaped material is electrically interconnected line, to provide multiple conductive paths from each finger-shaped material at least one front surface engagement pad.
64A.According to 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 during the manufacture of superbattery, before the solidification of conductive adhesive grafting material substantially Conductive adhesive grafting material is confined to discrete engagement pad.
65A.According to superbattery described in clause 64A, wherein the adjacent corresponding discrete engagement pad of the independent barrier is simultaneously And it is higher than the corresponding discrete engagement pad.
66A.A kind of superbattery, comprising:
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 parallel first Long side and the second long side and two short sides being oppositely arranged define, the front surface at least partially in solar battery string Solar radiation is exposed to during operation；
Conductive front surface metallization pattern, setting is on the front surface and including adjacent at least the one of the setting of the first long side A front surface engagement pad；And
Conductive back surface metalation pattern, setting is on the back surface and including adjacent at least the one of the setting of the second long side A back surface engagement pad；
Wherein the silicon solar cell is in line arrangement, the first long side of adjacent silicon solar cell and the second long side weight It is folded, and front surface engagement pad on adjacent silicon solar cell and back surface engagement pad are overlapped and are engaged by conductive adhesive It is joined to each other to conductivity of materials, so that silicon solar cell is electrically connected in series.And
Wherein the back surface metallization pattern of each silicon solar cell includes barrier, which is configured to manufacturing During superbattery, 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 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 forming list for each discrete engagement pad Multiple features of only barrier, the multiple feature solidify during the manufacture of superbattery in conductive adhesive grafting material Conductibility grafting material is substantially confined to discrete engagement pad before.
68A.According to superbattery described in clause 67A, wherein the adjacent corresponding discrete engagement pad of the independent barrier is simultaneously And it is higher than the corresponding discrete engagement pad.
69A.A method of making solar battery string, which comprises
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 Multiple rectangle silicon solar cells, 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 engage To each other, so that solar battery is electrically connected in series；
Wherein the multiple rectangle silicon solar cell includes: that there are two at least one rectangle solar-electricities of chamfering for tool Pond, the chamfering correspond to the turning of pseudo-square wafers or a part at turning；And respectively lack one or more of chamfering A rectangle silicon solar cell.And
Wherein by being greater than the width vertical with including the long axis of rectangle silicon solar cell of chamfering and lacking chamfering Rectangle silicon solar cell the vertical width of long axis, and to the spacing between the parallel lines along cutting pseudo-square wafers It is selected, to compensate chamfering；Therefore, multiple rectangular silicons during the work of solar battery string, in solar battery string The front surface of each of solar battery battery, the area being exposed under sunlight are substantially equal.
70A.A kind of solar battery string, comprising:
The multiple silicon solar cells for the arrangement that is in line, wherein the end of adjacent solar battery is overlapped and conductively connects It closes each other, so that solar battery is electrically connected in series；
Wherein at least one silicon solar cell has chamfering, and the chamfering, which corresponds to from it, cuts silicon solar cell The turning of dead square silicon wafer or a part at turning；At least one silicon solar cell lacks chamfering；In solar battery It goes here and there during work, the area that the front surface of each silicon solar cell is exposed under sunlight is substantially equal.
71A.A method of making two or more solar battery strings, which comprises
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 than first a rectangle silicon solar cells with chamfering, and lack more than second a rectangle silicon solar cells of chamfering, Described in chamfering correspond to dead square silicon wafer turning or turning a part, a rectangular silicon solar-electricity more than described second Each battery in pond has the first length, and the span of first length is equal to the full duration of dead square silicon wafer；
From each of more than first a rectangle silicon solar cells battary removal chamfering, and form the third for lacking chamfering Multiple rectangle silicon solar cells, 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, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and more than second a rectangle silicon solar cells are electrically connected in series, width is consequently formed and is equal to The solar battery string of first length；And
The multiple rectangle silicon solar cells of third are in line arrangement, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and the multiple rectangle silicon solar cells of third are electrically connected in series, width is consequently formed and is equal to The solar battery string of second length.
72A.A method of making two or more solar battery strings, which comprises
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 than first a rectangle silicon solar cells with chamfering, and lack more than second a rectangle silicon solar cells of chamfering, Described in chamfering correspond to dead square silicon wafer turning or turning a part；
More than first a rectangle silicon solar cells are in line arrangement, the long side of adjacent rectangle silicon solar cell is overlapped And be 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, the long side of adjacent rectangle silicon solar cell is overlapped And be conductively joined to each other, and more than second a rectangle silicon solar cells are electrically connected in series.
73A.A method of making solar energy module, which comprises
Along each of a plurality of wire cutting one or more dead square silicon wafer at the long edge for being parallel to chip, To form multiple rectangle silicon solar cells with chamfering by the multiple dead square silicon wafer, and lack 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 Superbattery only includes the rectangle silicon solar cell for lacking chamfering of arrangement of being in line, wherein the rectangular silicon solar battery Long side be overlapped and be conductively joined to each other, so that silicon solar cell is electrically connected in series；
It arranges at least some of the rectangle silicon solar cell with chamfering, forms more than second a superbatteries, each Superbattery only includes the straight rectangle silicon solar cell with chamfering of arrangement, wherein the rectangular silicon solar battery Long side be overlapped and be conductively joined to each other, so that silicon solar cell is electrically connected in series；And
Superbattery is arranged to form solar energy module with the parallel superbattery row for being substantially equal length Front surface, wherein each row only includes superbattery more than first in a superbattery or only includes more than second a superbatteries In superbattery.
74A.According to 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 only wraps Include the superbattery more than first in a superbattery.
75A.According to solar energy module described in clause 74A, wherein solar energy module includes six row's superbattery in total.
76A.A kind of superbattery, comprising:
The multiple silicon solar cells for the arrangement that is in line in a first direction, wherein the end weight of adjacent silicon solar cell It folds and is conductively joined to each other, so that silicon solar cell is electrically connected in series；And
Elongated flexible electrical interconnection, long axis is parallel to the second direction orientation vertical with the first direction, described Elongated flexible electrical interconnection has following features:
At three or more discrete positions arranged along second direction, it is conductively joined to the silicon of end one too The front surface or back surface of positive energy battery；At least full duration of extending end solar battery in a second direction；Perpendicular to end The front surface or rear surface measurement of silicon solar cell are held, 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 swollen is reconciled between end silicon solar cell and the electrical interconnection It is swollen.
77A.According to 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 superbattery described in clause 76A, wherein flexible electrical interconnection extend in a second direction it is super Except battery, electricity is provided mutually to be at least the neighbouring superbattery the second superbattery disposed in parallel in solar energy module Even.
79A.According to superbattery described in clause 76A, wherein flexible electrical interconnection extend in a first direction it is super Except battery, so as in solar energy module for the superbattery be in line the second superbattery disposed in parallel provide it is electric mutually Even.
80A.A kind of solar energy module, comprising:
Multiple superbatteries, the multiple superbattery be arranged to span equal to module width two or more are flat Capable 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, so that silicon solar cell is electrically connected in series；
Wherein at least one end of the first superbattery adjacent with the edge of module in first row is via flexible electrical interconnection And it is electrically connected to one end of the second superbattery adjacent with the same edge of module in second row, the flexibility electrical interconnection tool There are following features: being joined to the front surface of the first superbattery by electroconductive binder grafting material at multiple discrete positions；It is flat Row extends in the edge of module；Its at least part is folded in around described one end of the first superbattery, thus before module Side is invisible.
81A.According to 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 solar energy module described in clause 80A, wherein the two or more parallels of superbattery It is arranged on white backing plate, by table before the solar energy module irradiated by solar radiation during being formed in the operation of solar energy module Face, the white backing plate include parallel dark-coloured striped, and position and the width of the dead color striped correspond to parallel super The position in gap and width between battery row, and the white portion of the backer board can not by the gap between the row See.
83A.A method of making solar battery string, which comprises
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, thus 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 On the silicon solar cell that a or multiple quarters draw；
Silicon solar cell is divided along line drawing is carved, obtains the silicon solar cell of multiple rectangles, the silicon of each rectangle is too Position adjacent with long side on its front surface is arranged in all some electroconductive binder grafting materials on positive energy battery；
The silicon solar cell of multiple rectangles is in line arrangement, makes the long side of adjacent rectangle silicon solar cell with folded Lid mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Solidify conductive bonding material, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, and by this A little batteries are electrically connected in series.
84A.A method of making solar battery string, which comprises
On each battery in one or more silicon solar cells with laser mark one or more quarter line drawing, thus Multiple rectangular areas are defined on silicon solar cell, each solar battery includes the bottom of top surface and opposite facing setting Surface；
Electroconductive binder grafting material is applied to the multiple portions of the top surface of one or more silicon solar cells On；
Apply vacuum between the bottom surface and curved support surface of one or more silicon solar cells, so that one A or multiple silicon solar cells are bent against curved support surface, and cause one or more silicon solar cells along quarter Line drawing cutting, 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 with folded Lid mode is overlapped, and is arranged between a part of electroconductive binder grafting material；And
Solidify conductive bonding material, thus by adjacent overlapping rectangles silicon solar cell engagement to each other, and by this A little batteries are electrically connected in series.
85A.One or more silicon are applied to according to method described in clause 84A, including by electroconductive binder grafting material On solar battery, then marked for one or more quarter with laser on each battery in one or more silicon solar cells Line drawing.
86A.According to method described in clause 84A, including on each battery in one or more silicon solar cells With laser mark one or more quarter line drawing, electroconductive binder grafting material is then applied to one or more silicon solars electricity Chi Shang.
1B.A kind of equipment, comprising:
At least 25 solar batteries of a string of series connections, the solar battery string are in parallel with shared bypass diode Connection, it includes the super of the solar battery that each solar battery, which has greater than about 10 volts of breakdown voltage and is assembled to, Grade battery, the solar battery are arranged such that the long side overlapping of adjacent solar battery and are conductively connect by adhesive It closes.
2B.According to equipment described in clause 1B, wherein N is greater than or equal to 30.
3B.According to equipment described in clause 1B, wherein N is greater than or equal to 50.
4B.According to equipment described in clause 1B, wherein N is greater than or equal to 100.
5B.According to 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 equipment described in clause 1B, wherein N number of solar battery is assembled to single superbattery.
7B.According to equipment described in clause 1B, wherein N number of solar battery assemble it is multiple super on same backing Grade battery.
8B.According to equipment described in clause 1B, wherein the solar battery is silicon solar cell.
9B.According to equipment described in clause 1B, wherein superbattery has at least about length of 500mm in the flow direction Degree.
10B.According to equipment described in clause 1B, wherein superbattery includes the spy for being configured to limit adhesive sprawling Sign.
11B.According to equipment described in clause 10B, wherein the feature includes protruding features.
12B.According to equipment described in clause 10B, wherein the feature includes metallization.
13B.According to equipment described in clause 12B, wherein the metallization includes the line for extending the first long side overall length, institute Stating equipment further includes at least one engagement pad between the line and the first long side.
14B.According to equipment described in clause 13B, in which:
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；With And
Conductive threads interconnect finger-shaped material.
15B.According to equipment described in clause 10B, wherein the Q-character is on the front side of solar battery.
16B.According to equipment described in clause 10B, wherein the Q-character is on the back side of solar battery.
17B.According to equipment described in clause 10B, wherein the feature includes recess feature.
18B.According to equipment described in clause 10B, wherein the feature is hidden by the adjacent solar battery of superbattery.
19B.According to equipment described in clause 1B, wherein the first solar battery of the superbattery has chamfering, institute The second solar battery for stating superbattery lacks chamfering, and first solar battery and second solar battery The area being exposed under sunlight is identical.
20B.It further include flexible electrical interconnection according to 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 battery Surface and in two dimension reconcile solar battery thermal expansion.
21B.According to equipment described in clause 20B, wherein the flexible electrical interconnection piece has less than or equal to about 100 microns Thickness, to provide resistance less than or equal to about 0.012 ohm.
22B.According to equipment described in clause 20B, wherein the surface includes back surface.
23B.According to equipment described in clause 20B, wherein the flexible electrical interconnection piece contacts another superbattery.
24B.According to equipment described in clause 23B, wherein another described superbattery is in line with the superbattery.
25B.According to equipment described in clause 23B, wherein another described superbattery is adjacent to the superbattery.
26B.According to 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 equipment described in clause 20B, wherein the flexible electrical interconnection piece is electrically connected to bypass diode.
28B.According to equipment described in clause 1B, plurality of superbattery is arranged to two or more onto the backing plate Parallel row forms solar energy module front surface, wherein the backer board is white and including dark-coloured striped, the dead color The position of striped and width correspond to the gap between superbattery.
29B.According to equipment described in clause 1B, wherein superbattery includes at least a pair for being connected to power management system Battery strings.
30B.It further include electric power controller according to 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 whether solar battery is in reverse-biased；And
Reverse-biased solar battery and superbattery modular circuit are disconnected.
31B.According to 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, the equipment further include:
Another superbattery that the second module is formed on second liner is set, and the disparate modules have 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 of the first module for including top tape and is joined to the part.
32B.According to equipment described in clause 31B, wherein the second module passes through adhesive bond to the first module.
33B.According to equipment described in clause 31B, wherein the second module is joined to the first module by matching arrangement.
34B.It further include the terminal box Chong Die with the second module according to equipment described in clause 31B.
35B.According to equipment described in clause 34B, wherein the second module is joined to the first module by matching arrangement.
36B.According to 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 equipment described in clause 31B, wherein the first liner includes glass.
38B.According to equipment described in clause 31B, wherein the first liner includes non-glass.
39B.According to equipment described in clause 1B, wherein the solar battery includes the corner portion cut from more bulk Point.
40B.According to equipment described in clause 39B, wherein superbattery further includes another sun with chamfered part Energy battery, wherein the long side of solar battery is in electrical contact with the long side of another solar battery with similar length.
1C1.A kind of method, comprising:
The superbattery of at least N >=25 solar battery including a string of series connections is formed on identical liner, often A solar battery has greater than about 10 volts of breakdown voltage, and is arranged so that the long side overlapping of adjacent solar battery simultaneously It is conductively engaged with adhesive；And
Each superbattery is connect at most single bypass diode.
2C1.According to method described in clause 1C1, wherein N is greater than or equal to 30.
3C1.According to method described in clause 1C1, wherein N is greater than or equal to 50.
4C1.According to method described in clause 1C1, wherein N is greater than or equal to 100.
5C1.According to method described in clause 1C1, wherein described adhesive has the thickness less than or equal to about 0.1mm, And there is the thermal conductivity greater than or equal to about 1.5w/m/k.
6C1.According to method described in clause 1C1, wherein the solar battery is silicon solar cell.
7C1.According to method described in clause 1C1, wherein the superbattery has at least about 500mm in the flow direction Length.
8C1.According to method described in clause 1C1, wherein the first solar battery of the superbattery has chamfering, institute The second solar battery for stating superbattery lacks chamfering, and first solar battery and second solar battery The area being exposed under sunlight is identical.
9C1.It further include limiting adhesive using the feature of solar cell surface according to method described in clause 1C1 Sprawling.
10C1.According to method described in clause 9C1, wherein the feature includes protruding features.
11C1.According to method described in clause 9C1, wherein the feature includes metallization.
12C1.According to method described in clause 11C1, wherein the metallization include the line for extending the first long side overall length, At least one engagement pad between the line and the first long side.
13C1.According to method described in clause 12C1, in which:
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 And
Conductive threads interconnect finger-shaped material.
14C1.According to method described in clause 9C1, wherein the Q-character is on the front side of solar battery.
15C1.According to method described in clause 9C1, wherein the Q-character is on the back side of solar battery.
16C1.According to method described in clause 9C1, wherein the feature includes recess feature.
17C1.According to method described in clause 9C1, wherein the feature is hidden by the adjacent solar battery of superbattery Hiding.
18C1.It further include that another superbattery is formed on identical liner according to method described in clause 1C1.
19C1.According to method described in clause 1C1, further includes:
It is conductively joined to the surface of solar battery, flexible electrical interconnection has the long axis for being parallel to second direction, The second direction is perpendicular to first direction；And
So that flexible electrical interconnection reconciles the thermal expansion of solar battery in two dimension.
20C1.According to method described in clause 19C1, 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.
21C1.According to method described in clause 19C1, wherein the surface includes back surface.
22C1.It further include contacting another superbattery with flexible electrical interconnection according to method described in clause 19C1.
23C1.According to method described in clause 22C1, wherein another described superbattery and the superbattery Cheng Zhi Line.
24C1.According to method described in clause 22C1, wherein another described superbattery is adjacent to the superbattery.
25C1.It further include making the first part of the interconnection piece around superbattery according to method described in clause 19C1 Edge fold so that remaining second interconnecting parts are located on the back side of superbattery.
26C1.It further include that the flexible electrical interconnection is electrically connected to two poles of bypass according to method described in clause 19C1 Pipe.
27C1.According to method described in clause 1C1, further includes:
Multiple superbatteries are arranged to two or more parallels on identical liner, to form table before solar energy module Face, wherein the backer board is white and including corresponding to the position in gap and the dark-coloured striped of width between superbattery.
28C1.It further include that at least a pair of of battery is series-connected to power management system according to method described in clause 1C1.
29C1.According to method described in clause 1C1, further includes:
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 electric power controller determines whether solar battery is in reverse-biased；And
So that electric power controller disconnects reverse-biased solar battery from superbattery modular circuit.
30C1.According to method described in clause 1C1, wherein superbattery setting is on liner to form the first mould Block, first module have the top conduction band on the first side towards solar energy direction, the method also includes:
The setting of another superbattery is upper to form the second module in another liner, second module with towards Bottom belt in the second side in the direction far from solar energy direction,
Wherein the second module is Chong Die with a part of the first module for including top tape and is joined to the part.
31C1.According to method described in clause 30C1, wherein the second module passes through adhesive bond to the first module.
32C1.According to method described in clause 30C1, wherein the second module is joined to the first module by matching arrangement.
33C1.It further include keeping terminal box Chong Die with the second module according to method described in clause 30C1.
34C1.According to method described in clause 33C1, wherein the second module is joined to the first module by matching arrangement.
35C1.According to 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 method described in clause 30C1, wherein the liner includes glass.
37C1.According to method described in clause 30C1, wherein the liner includes non-glass.
38C1.According to method described in clause 30C1, further includes:
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 lower than the limit, switched with controller starting relay.
39C1.According to method described in clause 1C1, wherein the solar battery includes the chamfering cut from more bulk Part.
40C1.According to method described in clause 39C1, wherein forming superbattery includes putting the long side of solar battery It is set to and is in electrical contact with the long side of the similar length of another solar battery with chamfered part.
1C2.A kind of equipment, comprising:
Solar energy module, the solar energy module include front surface, and the front surface includes assembling the first superbattery At least 19 solar batteries for being connected in series of the first string, first superbattery is arranged so that adjacent solar battery Long side be overlapped and conductively engaged with adhesive；And
Ribbon conductor, the ribbon conductor are electrically connected to the rear surface contact of the first superbattery, the tap that will be hidden Head, which provides, arrives electrical components.
2C2.According to equipment described in clause 1C2, wherein the electrical components include bypass diode.
3C2.According to equipment described in clause 2C2, wherein the bypass diode is located in the rear surface of solar energy module.
4C2.According to equipment described in clause 3C2, wherein the bypass diode is located at the outside of terminal box.
5C2.According to equipment described in clause 4C2, wherein the terminal box includes single terminal.
6C2.According to equipment described in clause 3C2, wherein the edge that the bypass diode is located in solar energy module is attached Closely.
7C2.According to equipment described in clause 2C2, wherein bypass diode is located in laminate structures.
8C2.According to equipment described in clause 7C2, wherein the first superbattery is encapsulated in laminate structures.
9C2.According to equipment described in clause 2C2, wherein the bypass diode is located in the periphery week of solar energy module It encloses.
10C2.According to equipment described in clause 1C2, wherein the electrical components include module terminals, terminal box, power management System, intelligent switch, relay, voltage sensing controller, central inverter, the micro- inverter of DC/AC or DC/DC module function Rate optimizer.
11C2.According to equipment described in clause 1C1, wherein the electrical components are located in the rear surface of solar energy module.
12C2.According to equipment described in clause 1C1, wherein the solar energy module further includes assembling the second superbattery Second string be connected in series at least 19 solar batteries, second superbattery have be electrically connected in series it is super to first The first end of battery.
13C2.According to equipment described in clause 12C2, wherein the second superbattery is Chong Die with the first superbattery, and with passing The series connection of the property led adhesive is electrically connected to the first superbattery.
14C2.According to equipment described in clause 12C2, wherein the rear surface contact is located remotely from first end.
15C2.It further include the flexible interconnection between first end and the first superbattery according to equipment described in clause 12C2 Part.
16C2.According to equipment described in clause 15C2, wherein the flexible interconnection extend beyond the first superbattery and The side edge of second superbattery is electrically connected the first superbattery and the second superbattery are in parallel with another superbattery It connects.
17C2.According to equipment described in clause 1C2, wherein described adhesive has the thickness less than or equal to about 0.1mm, And there is the thermal conductivity greater than or equal to about 1.5w/m/k.
18C2.According to equipment described in clause 1C2, wherein the solar battery is with the greater than about breakdown potential of 10V The silicon solar cell of pressure.
19C2.According to equipment described in clause 1C2, wherein the first superbattery has at least about in the flow direction The length of 500mm.
20C2.According to equipment described in clause 1C2, wherein the solar battery in the first superbattery includes being configured to Limit the feature of adhesive sprawling.
21C2.According to equipment described in clause 20C2, wherein the feature includes protruding features.
22C2.According to equipment described in clause 21C2, wherein the feature includes metallization.
23C2.According to 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 equipment described in clause 23C2, in which:
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 And
Conductive threads interconnect finger-shaped material.
25C2.According to equipment described in clause 20C2, wherein the Q-character is on the front side of solar battery.
26C2.According to equipment described in clause 20C2, wherein the Q-character is on the back side of solar battery.
27C2.According to equipment described in clause 20C2, wherein the feature includes recess feature.
28C2.According to equipment described in clause 20C2, wherein the feature is by the adjacent solar-electricity of the first superbattery Pond hides.
29C2.According to equipment described in clause 1C2, wherein the solar battery of the first superbattery includes chamfered part.
30C2.According to equipment described in clause 29C2, wherein the first superbattery further includes have chamfered part another A solar battery, and wherein the long side of solar battery is electric with the long side of another solar battery with similar length Contact.
31C2.According to 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 battery and another described solar battery are exposed under sunlight is identical.
32C2.According to equipment described in clause 1C2, in which:
First superbattery and the second superbattery are arranged to parallel in backer board front surface；And
The backer board is white and the position including corresponding to gap between the first superbattery and the second superbattery Set the dark-coloured striped with width.
33C2.According to equipment described in clause 1C2, wherein the first superbattery includes being connected to power management system extremely Few a pair of battery strings.
34C2.It further include electric power controller according to 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 whether the solar battery of the first superbattery is in reverse-biased；And
Reverse-biased solar battery and superbattery modular circuit are disconnected.
35C2.According to equipment described in clause 34C2, wherein the electric power controller includes relay.
36C2.According to equipment described in clause 1C2, wherein the setting of the first superbattery is on the first liner to form mould Block, the module have the top conduction band on the first side towards solar energy direction, the equipment further include:
Another superbattery that disparate modules are formed on second liner is set, and the disparate modules have towards remote Bottom belt in the second side in the direction from solar energy direction,
Wherein the disparate modules are Chong Die with a part of module for including top tape and are joined to the part.
37C2.According to equipment described in clause 36C2, wherein the disparate modules pass through adhesive bond to the module.
38C2.According to equipment described in clause 36C2, wherein the disparate modules are joined to the mould by matching arrangement Block.
39C2.It further include the terminal box Chong Die with the disparate modules according to equipment described in clause 36C2.
40C2.According to 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, comprising:
First superbattery, first superbattery are arranged in solar energy module front surface and including multiple solar energy Battery, each solar battery have the breakdown voltage of greater than about 10V；
First ribbon conductor, first ribbon conductor are electrically connected with the rear surface contact of the first superbattery, by One hiding tap is provided to electrical components；
Second superbattery, second superbattery are arranged in solar energy module front surface and including multiple sun Energy battery, each solar battery 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 equipment described in clause 1C3, wherein the electrical components include bypass diode.
3C3.According to equipment described in clause 2C3, wherein the bypass diode is located in solar energy module rear surface.
4C3.According to equipment described in clause 3C3, wherein the bypass diode is located at the outside of terminal box.
5C3.According to equipment described in clause 4C3, wherein the terminal box includes single terminal.
6C3.According to equipment described in clause 3C3, wherein the bypass diode is located in solar energy module adjacent edges.
7C3.According to equipment described in clause 2C3, wherein the bypass diode is located in laminate structures.
8C3.According to equipment described in clause 7C3, wherein the first superbattery is encapsulated in laminate structures.
9C3.According to equipment described in clause 8C3, wherein the bypass diode is located in around solar energy module periphery.
10C3.According to equipment described in clause 1C3, wherein the first superbattery and the second superbattery are connected in series.
11C3.According to equipment described in clause 10C3, in which:
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 equipment described in clause 10C3, wherein the second hiding tap is connected to electrical components.
13C3.According to equipment described in clause 12C3, wherein the electrical components include bypass diode.
14C3.According to equipment described in clause 13C3, wherein the first superbattery includes no less than 19 solar-electricities Pond.
15C3.According to equipment described in clause 12C3, wherein the electrical components include power management system.
16C3.According to equipment described in clause 1C3, wherein the electrical components include switch.
17C3.According to equipment described in clause 16C3, further include and the voltage sensing controller for switching and being connected to.
18C3.According to equipment described in clause 16C3, wherein the switch is connected to central inverter.
19C3.According to 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 whether the solar battery of the first superbattery is in reverse-biased；And
Reverse-biased solar battery and superbattery modular circuit are disconnected.
20C3.According to equipment described in clause 1, wherein the electrical components include inverter.
21C3.According to equipment described in clause 20C3, wherein the inverter includes the micro- inverter of DC/AC.
22C3.According to equipment described in clause 1C3, wherein the electrical components include solar energy module terminal.
23C3.According to equipment described in clause 22C3, wherein the solar energy module terminal is single sun in terminal box It can module terminals.
24C3.According to equipment described in clause 1C3, wherein the electrical components are located in solar energy module rear surface.
25C3.According to equipment described in clause 1C3, wherein the rear surface contact is located remotely from and the second superbattery The end of first superbattery of overlapping.
26C3.According to equipment described in clause 1C3, wherein the first superbattery has at least about in the flow direction The length of 500mm.
27C3.According to equipment described in clause 1C3, wherein the solar battery in the first superbattery includes being configured to Limit the feature of adhesive sprawling.
28C3.According to equipment described in clause 27C3, wherein the feature includes protruding features.
29C3.According to equipment described in clause 28C3, wherein the feature includes metallization.
30C3.According to equipment described in clause 27C3, wherein the feature includes recess feature.
31C3.According to equipment described in clause 27C3, wherein the Q-character is on the back side of solar battery.
32C3.According to equipment described in clause 27C3, wherein the feature is by the adjacent solar-electricity of the first superbattery Pond hides.
33C3.According to equipment described in clause 1C3, wherein the solar battery of the first superbattery includes chamfered part.
34C3.According to equipment described in clause 33C3, wherein the first superbattery further includes have chamfered part another A solar battery, and wherein the long side of solar battery is electric with the long side of another solar battery with similar length Contact.
35C3.According to 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 battery and another described solar battery are exposed under sunlight is identical.
36C3.According to equipment described in clause 1C3, in which:
First superbattery and the second superbattery are arranged to parallel in backer board front surface；And
The backer board is white and the position including corresponding to gap between the first superbattery and the second superbattery Set the dark-coloured striped with width.
37C3.According to equipment described in clause 1C3, wherein the setting of the first superbattery is on the first liner to form mould Block, the module have the top conduction band in the module front surface towards solar energy direction, the equipment further include:
The upper third superbattery to form disparate modules of second liner is set, the disparate modules with away from Bottom belt in the second side in the direction in solar energy direction,
Wherein the disparate modules are Chong Die with a part of module for including top tape and are joined to the part.
38C3.According to equipment described in clause 37C3, wherein the disparate modules pass through adhesive bond to the module.
39C3.It further include the terminal box Chong Die with the disparate modules according to equipment described in clause 37C3.
40C3.According to 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, comprising:
Solar energy module, the solar energy module include front surface, and the front surface includes assembling the first superbattery First string be connected in series solar battery, first superbattery be arranged so that adjacent solar battery side overlapping And it is conductively engaged with adhesive；And
It is configured to limit the solar cell surface feature of adhesive.
2C4.According to equipment described in clause 1C4, wherein the solar cell surface feature includes recess feature.
3C4.According to equipment described in clause 1C4, wherein the solar cell surface feature includes protruding features.
4C4.According to equipment described in clause 3C4, wherein the protruding features are located in the front surface of solar battery.
5C4.According to equipment described in clause 4C4, wherein the protruding features include metallization pattern.
6C4.According to 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.It further include the engagement pad between conductive threads and long side according to equipment described in clause 6C4.
8C4.According to equipment described in clause 7C4, in which:
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 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 equipment described in clause 8C4, wherein the adjacent corresponding discrete engagement pad of the multiple independent barrier.
11C4.According to equipment described in clause 8C4, wherein the multiple independent barrier is higher than corresponding discrete engagement pad.
12C4.According to equipment described in clause 1C4, wherein the solar cell surface feature is by another solar-electricity The overlapping side in pond hides.
13C4.According to equipment described in clause 12C4, another one solar battery is the part of the superbattery.
14C4.According to equipment described in clause 12C4, another one solar battery is the portion of another superbattery Point.
15C4.According to equipment described in clause 3C4, wherein the protruding features are located on the back surface of solar battery.
16C4.According to equipment described in clause 15C4, wherein the protruding features include metallization pattern.
17C4.It will be glued according to equipment described in clause 16C4 wherein the metallization pattern forms multiple independent barriers Mixture is limited to multiple discrete engagement pads, and the discrete engagement pad is located at another solar battery Chong Die with solar battery In front surface.
18C4.According to equipment described in clause 17C4, wherein the adjacent corresponding discrete engagement pad of the multiple independent barrier.
19C4.According to equipment described in clause 17C4, wherein the multiple independent barrier is higher than corresponding discrete engagement pad.
20C4.According to equipment described in clause 1C1, wherein each solar battery of superbattery has 10V or bigger Breakdown voltage.
21C4.According to equipment described in clause 1C1, wherein superbattery has at least about 500mm's in the flow direction Length.
22C4.According to equipment described in clause 1C1, wherein the solar battery of superbattery includes chamfered part.
23C4.According to equipment described in clause 22C4, wherein superbattery further include have chamfered part another too Positive energy battery, and wherein the long side of solar battery connects with the long side electricity of another solar battery with similar length Touching.
24C4.According to equipment described in clause 22C4, wherein superbattery further includes another solar energy for lacking chamfering Battery, and the area that the solar battery and another described solar battery are exposed under sunlight is identical.
25C4.According to equipment described in clause 1C4, wherein the superbattery and the second superbattery are arranged in the first back In liner plate front surface, to form the first module.
26C4.According to equipment described in clause 25C4, wherein the backer board is white and described including corresponding to The dark-coloured striped of the position in gap and width between superbattery and the second superbattery.
27C4.According to 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:
The upper third superbattery to form the second module of second liner is set, second module with away from Bottom belt in second module side of solar energy, and
Wherein the second module is Chong Die with a part of the first module for including top tape and is joined to the part.
28C4.According to equipment described in clause 27C4, wherein the second module passes through adhesive bond to the first module.
29C4.It further include the terminal box Chong Die with the second module according to equipment described in clause 27C4.
30C4.According to equipment described in clause 29C4, wherein second module is by being arranged in the terminal box and institute The pairing arrangement stated between another terminal box in the second module is joined to the first module.
31C4.According to equipment described in clause 29C4, wherein the terminal box accommodates individual module terminal.
32C4.It further include the switch between the first module and the second module according to equipment described in clause 27C4.
33C4.According to equipment described in clause 32C4, further include and the voltage sensing controller for switching and being connected to.
34C4.According to equipment described in clause 27C4, wherein superbattery includes individually in parallel with single bypass diode No less than 19 solar batteries of electrical connection.
35C4.According to equipment described in clause 34C4, wherein the single bypass diode is located in the first module edge Near.
36C4.According to equipment described in clause 34C4, wherein the single bypass diode is located in laminate structures.
37C4.According to equipment described in clause 36C4, wherein superbattery is encapsulated in laminate structures.
38C4.According to equipment described in clause 34C4, wherein the single bypass diode is located in the first module periphery Around.
39C4.According to 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.It further include electric power controller according to equipment described in clause 25C4, the electric power controller is configured At:
Receive the voltage output of superbattery；
Based on the voltage, determine whether the solar battery of superbattery is in reverse-biased；And
Reverse-biased solar battery and superbattery modular circuit are disconnected.
1C5.A kind of equipment, comprising:
Solar energy module, the solar energy module include front surface, and the front surface includes assembling the first superbattery First string be connected in series silicon solar cell, first superbattery include the first silicon solar cell, described first Silicon solar cell, which has, chamfering and is arranged so that side is Chong Die with the second silicon solar cell, and with adhesive and the second silicon Solar battery conductively engages.
2C5.According to equipment described in clause 1C5, wherein the second silicon solar cell lacks chamfering, the first superbattery The front surface area that each silicon solar cell is exposed under sunlight is substantially equal.
3C5.According to equipment described in clause 2C5, in which:
First silicon solar cell and the second silicon solar cell have equal length；And
The width of first silicon solar cell is greater than the width of the second silicon solar cell.
4C5.According to equipment described in clause 3C5, wherein the length reappears the shape of pseudo-square wafers.
5C5.According to equipment described in clause 3C5, wherein the length is 156mm.
6C5.According to equipment described in clause 3C5, wherein the length is 125mm.
7C5.According to equipment described in clause 3C5, wherein the length-width ratio between the width and length of the first solar battery Between about 1:2 between about 1:20.
8C5.According to 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 equipment described in clause 3C5, wherein the first superbattery includes at least 19 silicon solar cells, Each silicon solar cell has greater than about 10 volts of breakdown voltage.
10C5.According to equipment described in clause 3C5, wherein the first superbattery has at least about in the flow direction The length of 500mm.
11C5.According to equipment described in clause 3C5, in which:
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 second The dark-coloured striped of the position in gap and width between superbattery.
12C5.According to equipment described in clause 1C5, wherein the second silicon solar cell includes chamfering.
13C5.According to 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 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 equipment described in clause 1C5, wherein the front surface includes:
First row, the first row include the first superbattery being made of the solar battery with chamfering；And
Second row, the second row include the silicon solar electricity for assembling the second string of the second superbattery and being connected in series Pond, second superbattery is connected in parallel with the first superbattery and the solar battery by lacking chamfering forms, second row Length and the length of first row be substantially equal.
16C5.According to equipment described in clause 15C5, wherein first row proximity modules edge, and second row is not adjacent to mould Block edge.
17C5.According to equipment described in clause 15C5, wherein the first superbattery includes the breakdown with greater than about 10 volts At least 19 solar batteries of voltage, and the first superbattery has at least about length of 500mm in the flow direction.
18C5.According to 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.It further include the metallization pattern on the second solar battery front side according to equipment described in clause 1C5.
20C5.According to equipment described in clause 19C5, wherein the metallization pattern includes the taper extended around chamfering Part.
21C5.According to equipment described in clause 19C5, wherein the metallization pattern includes protruding features, to limit bonding The sprawling of agent.
22C5.According to 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.It will be glued according to equipment described in clause 22C5 wherein the metallization pattern forms multiple independent barriers Mixture is limited to discrete engagement pad.
24C5.According to equipment described in clause 23C5, wherein the adjacent corresponding discrete engagement pad of the multiple independent barrier And it is higher than the corresponding discrete engagement pad.
25C5.It further include flexible electrical interconnection according to equipment described in clause 1C5, the flexibility electrical interconnection conductibility Ground is joined to the surface of the first solar battery and reconciles the thermal expansion of the first solar battery in two dimension.
26C5.According to 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 equipment described in clause 1C5, wherein the module has in the front surface towards solar energy direction Top conduction band, the equipment further include:
Another module, another described module have setting the second superbattery on the front surface, away from institute The bottom belt in another module of solar energy is stated, and
Wherein the second module is Chong Die with a part of the first module for including top tape and is joined to the part.
28C5.According to equipment described in clause 27C5, wherein another described module passes through adhesive bond to the mould Block.
29C5.It further include the terminal box Chong Die with another module according to equipment described in clause 27C5.
30C5.According to 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 equipment described in clause 29C5, wherein the terminal box accommodates individual module terminal.
32C5.It further include the switch between the module and another described module according to equipment described in clause 27C5.
33C5.According to equipment described in clause 32C5, further include and the voltage sensing controller for switching and being connected to.
34C5.According to equipment described in clause 27C5, wherein the first superbattery includes being electrically connected with single bypass diode No less than 19 solar batteries connect.
35C5.According to equipment described in clause 34C5, wherein the single bypass diode is located in the first module edge Near.
36C5.According to equipment described in clause 34C5, wherein the single bypass diode is located in laminate structures.
37C5.According to equipment described in clause 36C5, wherein superbattery is encapsulated in laminate structures.
38C5.According to equipment described in clause 34C5, wherein the single bypass diode is located in the first module periphery Around.
39C5.According to equipment described in clause 27C5, wherein the first superbattery and the second superbattery include being connected to A pair of electric power controller.
40C5.It further include electric power controller according to equipment described in clause 27C5, the electric power controller is configured At:
Receive the voltage output of the first superbattery；
Based on the voltage, determine whether the solar battery of the first superbattery is in reverse-biased；And
Reverse-biased solar battery and superbattery modular circuit are disconnected.
1C6.A kind of equipment, comprising:
Solar energy module, the solar energy module include front surface, and the front surface includes assembling the first superbattery First string be connected in series silicon solar cell, first superbattery include the first silicon solar cell, described first Silicon solar cell, which has, chamfering and is arranged so that side is Chong Die with the second silicon solar cell, and with adhesive and the second silicon Solar battery conductively engages.
2C6.According to equipment described in clause 1C6, wherein the second silicon solar cell lacks chamfering, the first superbattery The front surface area that each silicon solar cell is exposed under sunlight is substantially equal.
3C6.According to equipment described in clause 2C6, in which:
First silicon solar cell and the second silicon solar cell have equal length；And
The width of first silicon solar cell is greater than the width of the second silicon solar cell.
4C6.According to equipment described in clause 3C6, wherein the length reappears the shape of pseudo-square wafers.
5C6.According to equipment described in clause 3C6, wherein the length is 156mm.
6C6.According to equipment described in clause 3C6, wherein the length is 125mm.
7C6.According to equipment described in clause 3C6, wherein the length-width ratio between the width and length of the first solar battery Between about 1:2 between about 1:20.
8C6.According to 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 equipment described in clause 3C6, wherein the first superbattery includes at least 19 silicon solar cells, Each silicon solar cell has greater than about 10 volts of breakdown voltage.
10C6.According to equipment described in clause 3C6, wherein the first superbattery has at least about in the flow direction The length of 500mm.
11C6.According to equipment described in clause 3C6, in which:
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 second The dark-coloured striped of the position in gap and width between superbattery.
12C6.According to equipment described in clause 1C6, wherein the second silicon solar cell includes chamfering.
13C6.According to 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 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 equipment described in clause 1C6, wherein the front surface includes:
First row, the first row include the first superbattery being made of the solar battery with chamfering；And
Second row, the second row include the silicon solar electricity for assembling the second string of the second superbattery and being connected in series Pond, second superbattery is connected in parallel with the first superbattery and the solar battery by lacking chamfering forms, second row Length and the length of first row be substantially equal.
16C6.According to equipment described in clause 15C6, wherein first row proximity modules edge, and second row is not adjacent to mould Block edge.
17C6.According to equipment described in clause 15C6, wherein the first superbattery includes the breakdown with greater than about 10 volts At least 19 solar batteries of voltage, and the first superbattery has at least about length of 500mm in the flow direction.
18C6.According to 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.It further include the metallization pattern on the second solar battery front side according to equipment described in clause 1C6.
20C6.According to equipment described in clause 19C6, wherein the metallization pattern includes the taper extended around chamfering Part.
21C6.According to equipment described in clause 19C6, wherein the metallization pattern includes protruding features, to limit bonding The sprawling of agent.
22C6.According to 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.It will be glued according to equipment described in clause 22C6 wherein the metallization pattern forms multiple independent barriers Mixture is limited to discrete engagement pad.
24C6.According to equipment described in clause 23C6, wherein the adjacent corresponding discrete engagement pad of the multiple independent barrier And it is higher than the corresponding discrete engagement pad.
25C6.It further include flexible electrical interconnection according to equipment described in clause 1C6, the flexibility electrical interconnection conductibility Ground is joined to the surface of the first solar battery and reconciles the thermal expansion of the first solar battery in two dimension.
26C6.According to 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 equipment described in clause 1C6, wherein the module has in the front surface towards solar energy direction Top conduction band, the equipment further include:
Another module, another described module have setting the second superbattery on the front surface, away from institute The bottom belt in another module of solar energy is stated, and
Wherein the second module is Chong Die with a part of the first module for including top tape and is joined to the part.
28C6.According to equipment described in clause 27C6, wherein another described module passes through adhesive bond to the mould Block.
29C6.It further include the terminal box Chong Die with another module according to equipment described in clause 27C6.
30C6.According to 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 equipment described in clause 29C6, wherein the terminal box accommodates individual module terminal.
32C6.It further include the switch between the module and another described module according to equipment described in clause 27C6.
33C6.According to equipment described in clause 32C6, further include and the voltage sensing controller for switching and being connected to.
34C6.According to equipment described in clause 27C6, wherein the first superbattery includes being electrically connected with single bypass diode No less than 19 solar batteries connect.
35C6.According to equipment described in clause 34C6, wherein the single bypass diode is located in the first module edge Near.
36C6.According to equipment described in clause 34C6, wherein the single bypass diode is located in laminate structures.
37C6.According to equipment described in clause 36C6, wherein superbattery is encapsulated in laminate structures.
38C6.According to equipment described in clause 34C6, wherein the single bypass diode is located in the first module periphery Around.
39C6.According to equipment described in clause 27C6, wherein the first superbattery and the second superbattery include being connected to A pair of electric power controller.
40C6.It further include electric power controller according to equipment described in clause 27C6, the electric power controller is configured At:
Receive the voltage output of the first superbattery；
Based on the voltage, determine whether the solar battery of the first superbattery is in reverse-biased；And
Reverse-biased solar battery and superbattery modular circuit are disconnected.
1C7.A kind of equipment, comprising:
Solar energy module, the solar energy module include front surface, and the front surface includes that the first string is connected in series extremely Few 19 silicon solar cells, each silicon solar cell have the breakdown voltage of greater than about 10V, and assemble and the first surpass Grade battery, first superbattery include the first silicon solar cell, and first silicon solar cell is arranged so as to hold Portion is Chong Die with the second silicon solar cell, and is conductively engaged with adhesive with the second silicon solar cell；And
Conductively it is joined to the interconnection piece of solar cell surface.
2C7.According to equipment described in clause 1C7, wherein the solar cell surface includes the first silicon solar cell The back side.
3C7.It further include that the superbattery is electrically connected to the band-like of electrical components to lead according to equipment described in clause 2C7 Line.
4C7.According to equipment described in clause 3C7, wherein the ribbon conductor is conductively joined to far from overlapped ends Solar cell surface.
5C7.According to equipment described in clause 4C7, wherein the electrical components are located in solar energy module rear surface.
6C7.According to equipment described in clause 4C7, wherein the electrical components include terminal box.
7C7.According to equipment described in clause 6C7, wherein the terminal box with and the Chong Die disparate modules of the module on Another terminal box match engagement.
8C7.According to equipment described in clause 4C7, wherein the electrical components include bypass diode.
9C7.According to equipment described in clause 4C7, wherein the electrical components include module terminals.
10C7.According to equipment described in clause 4C7, wherein the electrical components include inverter.
11C7.According to equipment described in clause 10C7, wherein the inverter includes the micro- inverter of DC/AC.
12C7.According to equipment described in clause 11C7, wherein the micro- inverter of the DC/AC is located at solar energy module rear surface On.
13C7.According to equipment described in clause 4C7, wherein the electrical components include electric power controller.
14C7.According to equipment described in clause 13C7, wherein the electric power controller includes switch.
15C7.According to equipment described in clause 14C7, further include and the voltage sensing controller for switching and being connected to.
16C7.According to equipment described in clause 13C7, wherein the electric power controller is configured to:
Receive the voltage output of superbattery；
Based on the voltage, determine whether the solar battery of superbattery is in reverse-biased；And
Reverse-biased solar battery and superbattery modular circuit are disconnected.
17C7.According to equipment described in clause 16C7, wherein the electric power controller is electrically connected with central inverter.
18C7.According to equipment described in clause 13C7, wherein the electric power controller includes that DC/DC modular power is excellent Change device.
19C7.According to equipment described in clause 3C7, wherein the interconnection piece is clipped in the superbattery and the front surface On another superbattery between.
20C7.According to equipment described in clause 3C7, wherein the ribbon conductor is conductively joined to the interconnection piece.
21C7.According to 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 equipment described in clause 3C7, wherein the interconnection piece is configured to for 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 equipment described in clause 3C7, wherein the thickness of the interconnection piece is less than or equal to about 100 microns.
24C7.According to equipment described in clause 3C7, wherein the thickness of the interconnection piece is less than or equal to about 30 microns.
25C7.According to equipment described in clause 3C7, wherein superbattery has at least about 500mm's in the flow direction Length.
26C7.It further include another superbattery in the module front surface according to method described in clause 3C7.
27C7.According to equipment described in clause 26C7, wherein the interconnection piece will another described superbattery with it is described Superbattery is connected in series.
28C7.According to 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 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 striped of the position in gap and width between the superbattery and another described superbattery.
30C7.According to equipment described in clause 3C7, wherein the interconnection piece includes pattern.
31C7.According to equipment described in clause 30C7, wherein the pattern includes slit, groove and/or hole.
32C7.According to equipment described in clause 3C7, wherein a part of the interconnection piece is dark-coloured.
33C7.According to equipment described in clause 3C7, in which:
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 equipment described in clause 3C7, in which:
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 equipment described in clause 3C7, wherein the interconnection piece forms bus.
36C7.According to equipment described in clause 3C7, wherein the interconnection piece is conductively joined to too at cemented joint Positive energy battery surface.
37C7.According to equipment described in clause 3C7, wherein the first part of the interconnection piece surrounds the edge of superbattery It folds, so that remaining second part is located on the back side of superbattery.
38C7.It further include the metallization pattern in the front surface according to equipment described in clause 3C7, and including edge Long side extend line, the equipment further includes multiple discrete engagement pads between the line and the long side.
39C7.According to equipment described in clause 38C7, in which:
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
Conductive threads interconnect finger-shaped material.
40C7.According to equipment described in clause 38C7, wherein the metallization pattern includes protruding features, to limit bonding The sprawling of agent.
1C8.A kind of equipment, comprising:
Arrange that rows of multiple superbatteries, each superbattery include having at least in solar energy module front surface Straight at least 19 silicon solar cells of the arrangement of 10V breakdown voltage, wherein the end portion of adjacent silicon solar cell Divide and be overlapped and conductively engage, the silicon solar cell is electrically connected in series；
Wherein in first row the end of the first superbattery of module edge via being joined to the first superbattery The flexible electrical interconnection of front surface and the end for being electrically connected to the second superbattery of module edge in neighbouring second row.
2C8.According to equipment described in clause 1C8, wherein a part of the flexible electrical interconnection piece is covered by dark-coloured film.
3C8.According to equipment described in clause 2C8, wherein the solar energy module front surface includes backer board, the backing Plate reduces the visual contrast with the flexible electrical interconnection.
4C98.According to equipment described in clause 1C8, wherein a part of the flexible electrical interconnection piece is colored.
5C8.According to equipment described in clause 4C8, wherein the solar energy module front surface includes backer board, the backing Plate reduces the visual contrast with the flexible electrical interconnection.
6C8.According to equipment described in clause 1C8, wherein the solar energy module front surface includes white backing plate.
7C8.It further include the dark-coloured striped corresponding to gap between the row according to equipment described in clause 6C8.
8C8.According to equipment described in clause 6C8, wherein the n-type semiconductor layer of the silicon solar cell is towards backing Plate.
9C8.According to equipment described in clause 1C8, in which:
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 equipment described in clause 9C8, wherein the encapsulant includes thermoplastic polymer.
11C8.According to equipment described in clause 10C8, wherein the thermoplastic polymer includes thermoplastic olefin polymer.
12C8.It further include glass front plate according to equipment described in clause 9C8.
13C8.According to method described in clause 12C8, wherein the backer board includes glass.
14C8.According to equipment described in clause 1C8, wherein the flexible electrical interconnection piece engages at multiple discrete positions.
15C8.According to equipment described in clause 1C8, wherein the flexible electrical interconnection piece and conductive adhesive grafting material Engagement.
16C8.It further include cemented joint according to equipment described in clause 1C8.
17C8.According to equipment described in clause 1C8, prolong wherein the flexible electrical interconnection piece is parallel to the module edge It stretches.
18C8.According to equipment described in clause 1C8, wherein a part of the flexible electrical interconnection piece surrounds the first super electricity Pond folds and is hidden.
19C8.It further include that the first superbattery is electrically connected to the band-like of electrical components to lead according to equipment described in clause 1C8 Line.
20C8.According to equipment described in clause 19C8, wherein the ribbon conductor is conductively joined to flexible electrical interconnection Part.
21C8.According to 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 equipment described in clause 19C8, wherein the electrical components are located in solar energy module rear surface.
23C8.According to equipment described in clause 19C8, wherein the electrical components include terminal box.
24C8.According to equipment described in clause 23C8, wherein in the terminal box and another solar energy module front surface Another terminal box match engagement.
25C8.According to equipment described in clause 23C8, wherein the terminal box includes single terminal terminal box.
26C8.According to equipment described in clause 19C8, wherein the electrical components include bypass diode.
27C8.According to equipment described in clause 19C8, wherein the electrical components include switch.
28C8.It further include voltage sensing controller according to equipment described in clause 27C8, the voltage sensing controller quilt It is configured to:
Receive the voltage output of the first superbattery；
Based on the voltage, determine whether the solar battery of the first superbattery is in reverse-biased；And
It is connected to the switch, reverse-biased solar battery and superbattery modular circuit is disconnected.
29C8.According to equipment described in clause 1C8, wherein the first superbattery is connected with the superbattery.
30C8.According to equipment described in clause 1C8, in which:
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 equipment described in clause 1C8, in which:
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 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 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 equipment described in clause 1C8, wherein the silicon solar cell of the first superbattery includes item, it is described Item has the width between about 1:2 to about 1:20 and the length-width ratio between length.
35C8.According to equipment described in clause 1C8, wherein the overlapping adjacent silicon of the first superbattery is used for solar batteries viscous Mixture conductively engages, and the equipment further includes being configured to limit the feature of adhesive sprawling.
36C8.According to equipment described in clause 35C8, wherein the feature includes trench.
37C8.According to equipment described in clause 36C8, wherein the trench is formed by metallization pattern.
38C8.According to equipment described in clause 37C8, wherein the metallization pattern includes along the 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 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 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, comprising:
Solar energy module, the solar energy module include front surface, and the front surface includes assembling the first superbattery Series connection silicon solar cell, first superbattery include the first cutting rod, first cutting rod have along The front side metallization pattern of first external margin Chong Die with the second cutting rod.
2C9.According to 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 equipment described in clause 2C9, wherein the length is 156mm.
4C9.According to equipment described in clause 2C9, wherein the length is 125mm.
5C9.According to equipment described in clause 2C9, wherein length-width ratio between the width and length of the first cutting rod between Between about 1:2 to about 1:20.
6C9.According to equipment described in clause 2C9, wherein the first cutting rod includes the first chamfering.
7C9.According to equipment described in clause 6C9, wherein the first chamfering is along the first external margin.
8C9.According to equipment described in clause 6C9, wherein the first chamfering is not along the first external margin.
9C9.According to equipment described in clause 6C9, wherein the second cutting rod includes the second chamfering.
10C9.According to equipment described in clause 9C9, wherein the overlapping edge of the second cutting rod includes the second chamfering.
11C9.According to equipment described in clause 9C9, wherein the overlapping edge of the second cutting rod does not include the second chamfering.
12C9.According to equipment described in clause 6C9, wherein the length reappears the quasi- pros for therefrom separating the first cutting rod The shape of shape chip.
13C9.According to 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 equipment described in clause 1C9, wherein the second cutting rod about 1mm to 5mm Chong Die with the first cutting rod.
15C9.According to equipment described in clause 1C9, wherein the front side metallization pattern includes bus.
16C9.According to equipment described in clause 15C9, wherein bus includes conical section.
17C9.According to equipment described in clause 1C9, wherein the front side metallization pattern includes discrete engagement pad.
18C9.According to equipment described in clause 17C9, in which:
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 equipment described in clause 18C9, wherein the feature includes trench.
20C9.According to equipment described in clause 1C9, wherein the front side metallization pattern includes bypass wire.
21C9.According to equipment described in clause 1C9, wherein the front side metallization pattern includes finger-shaped material.
22C9.According to equipment described in clause 1C9, wherein the first cutting rod further includes along opposite with the first external margin The second external margin back side metallization pattern.
23C9.According to equipment described in clause 22C9, wherein the back side metallization pattern includes engagement pad.
24C9.According to equipment described in clause 22C9, wherein the back side metallization pattern includes bus.
25C9.According to 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 method described in clause 1C9, wherein another on the superbattery and the module front surface Superbattery connection.
27C9.According to equipment described in clause 26C9, wherein the module front surface includes white liner, the white lining Pad is characterized in that corresponding to the dark-coloured striped in gap between the superbattery and another described superbattery.
28C9.According to equipment described in clause 26C9, in which:
The solar energy module front surface includes backer board；And
Backer board, interconnection piece, superbattery and encapsulant include laminate structures.
29C9.According to equipment described in clause 28C9, wherein the encapsulant includes thermoplastic polymer.
30C9.According to equipment described in clause 29C9, wherein the thermoplastic polymer includes thermoplastic olefin polymer.
31C9.According to equipment described in clause 26C9, further include the superbattery and another described superbattery it Between interconnection piece.
32C9.According to equipment described in clause 31C9, wherein a part of the interconnection piece is covered by dark-coloured film.
33C9.According to equipment described in clause 31C9, wherein a part of the interconnection piece is colored.
34C9.It further include that the superbattery is electrically connected to the band-like of electrical components according to equipment described in clause 31C9 Conducting wire.
35C9.According to equipment described in clause 34C9, wherein the ribbon conductor is conductively joined to the first cutting rod Rear side.
36C9.According to equipment described in clause 34C9, wherein the electrical components include bypass diode.
37C9.According to equipment described in clause 34C9, wherein the electrical components include switch.
38C9.According to equipment described in clause 34C9, wherein the electrical components include terminal box.
39C9.According to equipment described in clause 38C9, wherein the terminal box is Chong Die with another terminal box and in matching To arrangement.
40C9.According to equipment described in clause 26C9, wherein the superbattery and the series connection of another described superbattery Connection.
1C10.A kind of method, comprising:
Laser marks quarter line drawing on silicon, to define solar-electricity pool area；
Electroconductive binder grafting material is applied to the top table for drawing silicon wafer quarter of neighbouring solar-electricity pool area long side Face；And
Silicon wafer is divided along the quarter line drawing, to provide solar battery item, the solar battery item includes neighbour A part of the electroconductive binder grafting material of the nearly solar battery long side setting.
2C10.It further include providing metallization pattern for silicon wafer, so that the segmentation according to method described in clause 1C10 Generate the solar battery item with the metallization pattern along the long side.
3C10.According to method described in clause 2C10, wherein the metallization pattern includes bus or discrete engagement pad.
4C10.According to method described in clause 2C10, wherein described provide includes printing the metallization pattern.
5C10.According to method described in clause 2C10, wherein described provide includes that the metallization pattern is electroplated.
6C10.According to method described in clause 2C10, wherein the metallization pattern includes being configured to limit described lead The feature of electric adhesive bond material creep.
7C10.According to equipment described in clause 6C10, wherein the feature includes trench.
8C10.According to method described in clause 1C10, wherein described apply includes printing.
9C10.According to method described in clause 1C10, wherein described apply includes using masked-deposition.
10C10.According to method described in clause 1C10, wherein the long side length of the solar battery item reappears chip Shape.
11C10.According to method described in clause 10C10, wherein the length is 156mm or 125mm.
12C10.According to method described in clause 10C10, wherein between the width and length of the solar battery item Length-width ratio is between about 1:2 to about 1:20.
13C10.According to method described in clause 1C10, wherein the segmentation includes:
Apply vacuum between the bottom surface and bent support surface of chip, so that the opposite bending of solar-electricity pool area Support surface bending, and to cut silicon wafer along quarter line drawing.
14C10.According to method described in clause 1C10, further includes:
Multiple solar battery items arrangement is in line, wherein the long side overlapping of adjacent solar battery item, and conductive A part of adhesive bond material is disposed there between；And
Conductive bonding material is solidified, so that the solar battery item engagement of adjacent overlapping be arrived each other, and they are gone here and there Connection electrical connection.
15C10.According to method described in clause 14C10, wherein the solidification includes applying heat.
16C10.According to method described in clause 14C10, wherein the solidification includes applying pressure.
17C10.According to method described in clause 14C10, wherein the arrangement includes forming layered structure.
18C10.According to method described in clause 17C10, wherein the solidification include heat and pressure are applied to it is described Layered structure.
19C10.According to method described in clause 17C10, wherein the layered structure includes encapsulant.
20C10.According to method described in clause 19C10, wherein the encapsulant includes thermoplastic polymer.
21C10.According to method described in clause 20C10, wherein the thermoplastic polymer includes thermoplastic olefin Object.
22C10.According to method described in clause 17C10, wherein the layered structure includes backer board.
23C10.According to method described in clause 22C10, in which:
The backer board is white；And
The layered structure further includes dark-coloured striped.
24C10.According to method described in clause 14C10, wherein the arrangement includes will at least 19 solar batteries Item arrangement is in line.
25C10.According to method described in clause 24C10, wherein described at least each of 19 solar battery items With at least breakdown voltage of 10V.
26C10.It further include placing at least 19 solar battery items according to method described in clause 24C10 At being only connected to single bypass diode.
27C10.It further include at least 19 solar battery items according to method described in clause 26C10 Ribbon conductor is formed between one and the single bypass diode.
28C10.According to method described in clause 27C10, wherein the single bypass diode is located in terminal box.
29C10.According to method described in clause 28C10, wherein the terminal box is located on the back side of solar energy module, with Another terminal box of different solar energy modules is arranged at pairing.
30C10.According to method described in clause 14C10, wherein the overlapping cell strip of the multiple solar battery item with The solar battery item is overlapped about 1mm to 5mm.
31C10.According to method described in clause 14C10, wherein the solar battery item includes the first chamfering.
32C10.According to method described in clause 31C10, wherein the overlapping solar-electricity of the multiple solar battery item The long side of pond item does not include the second chamfering.
33C10.According to method described in clause 32C10, wherein the width of the solar battery item is greater than the overlapping The width of solar battery item, so that the solar battery item and the overlapping solar battery item are with roughly equal Area.
34C10.According to method described in clause 31C10, wherein the overlapping solar-electricity of the multiple solar battery item The long side of pond item includes the second chamfering.
35C10.According to method described in clause 34C10, wherein the overlapping sun of the multiple solar battery 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 method described in clause 34C10, wherein the overlapping sun of the multiple solar battery item The long side of energy cell strip is Chong Die with the long side for the cell strip for not including the first chamfering.
37C10.It further include using interconnection piece by the multiple solar battery item according to method described in clause 14C10 It is connect with another multiple solar battery item.
38C10.According to method described in clause 37C10, wherein a part of the interconnection piece is covered by dark-coloured film.
39C10.According to method described in clause 37C10, wherein a part of the interconnection piece is colored.
40C10.According to method described in clause 37C10, wherein the multiple solar battery item and described another is more A solar battery item is connected in series.
1C11.A kind of method, comprising:
The silicon wafer for having 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 battery item, the solar battery item includes neighbour A part of the electroconductive binder grafting material of the nearly solar battery long side setting.
2C11.According to method described in clause 1C11, wherein the quarter draws and draws including laser incising.
3C11.Quarter line drawing is drawn according to method described in clause 2C11, including laser incising, and then applies conductive adhesion Agent grafting material.
4C11.Chip is applied to according to method described in clause 2C11, including by electroconductive binder grafting material, and with Laser marks quarter line drawing afterwards.
5C11.According to method described in clause 4C11, in which:
Described apply includes applying uncured electroconductive binder grafting material；And
The laser incising is drawn including avoiding the heat from laser from solidifying uncured electroconductive binder grafting material.
6C11.According to method described in clause 5C11, wherein described avoid including selection laser power and/or quarter line drawing The distance between uncured electroconductive binder grafting material.
7C11.According to method described in clause 1C11, wherein described apply includes printing.
8C11.According to method described in clause 1C11, wherein described apply includes using masked-deposition.
9C11.According to method described in clause 1C11, wherein quarter line drawing and electroconductive binder grafting material are located at the table On face.
10C11.According to method described in clause 1C11, wherein the segmentation includes:
Apply vacuum between wafer surface and bent support surface, so that solar-electricity pool area is against bent support table Face bending, and to cut silicon wafer along quarter line drawing.
11C11.According to 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 method described in clause 1C11, wherein the segmentation includes that pressure is applied to chip using roller.
13C11.According to method described in clause 1C11, wherein described provide includes providing metallization pattern for silicon wafer, So that the segmentation generates the solar battery item with the metallization pattern along long side.
14C11.According to method described in clause 13C11, wherein the metallization pattern includes bus or discrete engagement pad.
15C11.According to method described in clause 13C11, wherein described provide includes printing the metallization pattern.
16C11.According to method described in clause 13C11, wherein described provide includes that the metallization pattern is electroplated.
17C11.According to method described in clause 13C11, wherein the metallization pattern is described including being configured to limit The feature of electroconductive binder grafting material sprawling.
18C11.According to method described in clause 1C11, wherein the long side length of the solar battery item reappears chip Shape.
19C11.According to method described in clause 18C11, wherein the length is 156mm or 125mm.
20C11.According to method described in clause 18C11, wherein between the width and length of the solar battery item Length-width ratio is between about 1:2 to about 1:20.
21C11.According to method described in clause 1C11, further includes:
Multiple solar battery items arrangement is in line, wherein the long side overlapping of adjacent solar battery item, and conductive A part of adhesive bond material is disposed there between；And
Conductive bonding material is solidified, so that the solar battery item engagement of adjacent overlapping be arrived each other, and they are gone here and there Connection electrical connection.
22C11.According to method described in clause 21C11, in which:
The arrangement includes forming layered structure；And
The solidification includes that heat and pressure are applied to the layered structure.
23C11.According to method described in clause 22C11, wherein the layered structure includes thermoplastic olefin polymer envelope Fill agent.
24C11.According to 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 method described in clause 21C11, in which:
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 battery items.
26C11.According to method described in clause 25C11, further include using multiple solar battery items as one group of transport, and And wherein the arrangement includes that multiple solar battery items are arranged into module.
27C11.According to method described in clause 21C11, wherein the arrangement includes will have at least breakdown voltage of 10V At least 19 solar battery items only with single bypass diode arrangement be in line.
28C11.It further include at least 19 solar battery items according to method described in clause 27C11 Ribbon conductor is formed between one and the single bypass diode.
29C11.According to method described in clause 28C11, wherein the single bypass diode is located at the first solar energy mould In first terminal box of block, the second terminal box of first terminal box and the second solar energy module is arranged at pairing.
30C11.It further include at least 19 solar battery items according to method described in clause 27C11 One forms ribbon conductor between intelligent switch.
31C11.According to method described in clause 21C11, wherein the overlapping cell strip of the multiple solar battery item with The solar battery item is overlapped about 1mm to 5mm.
32C11.According to method described in clause 21C11, wherein the solar battery item includes the first chamfering.
33C11.According to method described in clause 32C11, wherein the overlapping solar-electricity of the multiple solar battery item The long side of pond item does not include the second chamfering.
34C11.According to method described in clause 33C11, wherein the width of the solar battery item is greater than the overlapping The width of solar battery item, so that the solar battery item and the overlapping solar battery item are with roughly equal Area.
35C11.According to method described in clause 32C11, wherein the overlapping solar-electricity of the multiple solar battery item The long side of pond item includes the second chamfering.
36C11.According to method described in clause 35C11, wherein the overlapping sun of the multiple solar battery 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 method described in clause 35C11, wherein the overlapping sun of the multiple solar battery item The long side of energy cell strip is Chong Die with the long side for the cell strip for not including the first chamfering.
38C11.It further include using interconnection piece by the multiple solar battery item according to method described in clause 21C11 It is connect with another multiple solar battery item.
39C11.According to method described in clause 38C11, wherein a part of the interconnection piece covered by dark-coloured film or It is colored.
40C11.According to method described in clause 38C11, wherein the multiple solar battery item and described another is more A solar battery item is connected in series.
1C12.A kind of method, comprising:
The silicon wafer for having 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 battery item；And
Apply the electroconductive binder grafting material of neighbouring solar battery long side setting.
2C12.According to method described in clause 1C12, wherein the quarter draws and draws including laser incising.
3C12.According to method described in clause 1C12, wherein described apply includes silk-screen printing.
4C12.According to method described in clause 1C12, wherein described apply includes ink jet printing.
5C12.According to method described in clause 1C12, wherein described apply includes using masked-deposition.
6C12.According to method described in clause 1C12, wherein the segmentation include the surface of chip and curved surface it Between apply vacuum.
7C12.According to method described in clause 6C12, wherein the curved surface includes vacuum manifold, and the segmentation Including will carve line drawing be orientated to it is at an angle relative to vacuum manifold.
8C12.According to method described in clause 7C12, wherein the angle is right angle.
9C12.According to method described in clause 7C12, wherein the angle is not right angle.
10C12.According to method described in clause 6C12, wherein bringing application vacuum by movement.
11C12.According to method described in clause 1C12, further includes:
Multiple solar battery items arrangement is in line, wherein the long side overlapping of adjacent solar battery item, and conductive Adhesive bond material is disposed there between；And
Conductive bonding material is solidified, the solar battery item of adjacent overlapping is electrically connected in series.
12C12.According to method described in clause 11C12, wherein the arrangement includes forming layered structure, the layering knot Structure includes encapsulant, and the method also includes to the laminated layered structure.
13C12.According to method described in clause 12C12, wherein the small part that is cured to is carried out in laminated period.
14C12.According to method described in clause 12C12, wherein the solidification does not carry out simultaneously with laminated.
15C12.According to method described in clause 12C12, wherein described laminated including applying vacuum.
16C12.According to method described in clause 15C12, wherein the vacuum is applied to air bag.
17C12.According to method described in clause 15C12, wherein the vacuum is applied to band.
18C12.According to method described in clause 12C12, wherein the encapsulant includes thermoplastic olefin polymer.
19C12.According to 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 method described in clause 11C12, wherein described provide includes providing metallization pattern for silicon wafer, So that the segmentation generates the solar battery item with the metallization pattern along long side.
21C12.According to method described in clause 20C12, wherein the metallization pattern includes bus or discrete engagement pad.
22C12.According to method described in clause 20C12, wherein described provide includes printing or galvanic metallization pattern.
23C12.According to 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 method described in clause 23C12, wherein the Q-character is on the front side of solar battery item.
25C12.According to method described in clause 23C12, wherein the Q-character is on the back side of solar battery item.
26C12.According to method described in clause 11C12, wherein the long side length of the solar battery item reappears chip Shape.
27C12.According to method described in clause 26C12, wherein the length is 156mm or 125mm.
28C12.According to method described in clause 26C12, wherein between the width and length of the solar battery item Length-width ratio is between about 1:2 to about 1:20.
29C12.According to method described in clause 11C12, wherein the arrangement includes will have at least breakdown voltage of 10V At least 19 solar battery items as the first superbattery, only with single bypass diode arrangement be in line.
30C12.It further include applying to lead between the first superbattery and interconnection piece according to method described in clause 29C12 Electric adhesive bond material.
31C12.According to method described in clause 30C12, wherein the interconnection piece is super by the first superbattery and second Battery is connected in parallel.
32C12.According to method described in clause 30C12, wherein the interconnection piece is super by the first superbattery and second Battery is connected in series.
33C12.According to method described in clause 29C12, further include the first superbattery and single bypass diode it Between form ribbon conductor.
34C12.According to method described in clause 33C12, wherein the single bypass diode is located at the first solar energy mould In first terminal box of block, the second terminal box of first terminal box and the second solar energy module is arranged at pairing.
35C12.According to method described in clause 11C12, wherein the solar battery item includes the first chamfering.
36C12.According to method described in clause 35C12, wherein the overlapping solar-electricity of the multiple solar battery item The long side of pond item does not include the second chamfering.
37C12.According to method described in clause 36C12, wherein the width of the solar battery item is greater than the overlapping The width of solar battery item, so that the solar battery item and the overlapping solar battery item are with roughly equal Area.
38C12.According to method described in clause 35C12, wherein the overlapping solar-electricity of the multiple solar battery item The long side of pond item includes the second chamfering.
39C12.According to method described in clause 38C12, wherein the overlapping sun of the multiple solar battery 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 method described in clause 38C12, wherein the overlapping sun of the multiple solar battery item The long side of energy cell strip is Chong Die with the long side for the cell strip for not including the first chamfering.
1C13.A kind of equipment, comprising:
Semiconductor wafer, the semiconductor wafer have first surface, and the first surface includes along the first external edge First metallization pattern of edge and along second external margin opposite with first external margin second metallization scheme Case, the semiconductor wafer further include between the first metallization pattern and the second metallization pattern first quarter line drawing.
2C13.According to equipment described in clause 1C13, wherein the first metallization pattern includes discrete engagement pad.
3C13.According to 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 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 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 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 equipment described in clause 3C13, wherein the first metallization pattern further includes the first bypass wire.
8C13.According to equipment described in clause 3C13, wherein the first metallization pattern further includes first end conducting wire.
9C13.According to equipment described in clause 1C13, wherein the first metallization pattern includes silver.
10C13.According to equipment described in clause 9C13, wherein the first metallization pattern includes silver paste.
11C13.According to equipment described in clause 9C13, wherein the first metallization pattern includes discrete contacts.
12C13.According to equipment described in clause 1C13, wherein the first metallization pattern includes the tin more cheaper than silver, aluminium Or another conducting wire.
13C13.According to equipment described in clause 1C13, wherein the first metallization pattern includes copper.
14C13.According to equipment described in clause 13C13, wherein the first metallization pattern includes electro-coppering.
15C13.It further include for mitigating compound passivation scheme according to equipment described in clause 13C13.
16C13.According to equipment described in clause 1C13, further includes:
Keep off the third metallization on the first surface of the semiconductor wafer of the first external margin or the second external margin Pattern；And
Between third metallization pattern and the second metallization pattern second quarter line drawing, wherein first quarter line drawing in the first gold medal Between categoryization pattern and third metallization pattern.
17C13.According to equipment described in clause 16C13, wherein first quarter line drawing and the second quarter line drawing between define First width is divided by the ratio of semiconductor die leaf length between about 1:2 to about 1:20.
18C13.According to equipment described in clause 17C13, wherein the length is about 156mm or about 125mm.
19C13.According to equipment described in clause 17C13, wherein the semiconductor wafer includes chamfering.
20C13.According to equipment described in clause 19C13, in which:
First quarter line drawing and the first external margin define first rectangular area, first rectangular area includes two Chamfering and the first metallization pattern, the area of first rectangular area corresponds to length and the product of the second width subtracts two The combined area of chamfering, the second width are greater than the first width；And
Second quarter line drawing and first quarter line drawing define the second rectangular area, second rectangular area do not include chamfering and Including third metallization pattern, the area of second rectangular area should be in the product of length and the first width.
21C13.According to equipment described in clause 16C13, wherein third metallization pattern includes being directed toward the second metallization figure The finger-shaped material of case.
22C13.It further include the second table of the semiconductor wafer opposite with first surface according to equipment described in clause 1C13 Third metallization pattern on face.
23C13.According to 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 equipment described in clause 1C13, wherein first quarter line drawing formed by laser.
25C13.According to equipment described in clause 1C13, wherein the first quarter line drawing is located in first surface.
26C13.According to equipment described in clause 1C13, wherein the first metallization pattern includes being configured to limit conductive glue The feature of mixture sprawling.
27C13.According to equipment described in clause 26C13, wherein the feature includes protruding features.
28C13.According to equipment described in clause 27C13, wherein the first metallization pattern includes engagement pad, and the spy Sign includes the adjacent engagement pad and the obstacle for being higher than the engagement pad.
29C13.According to equipment described in clause 26C13, wherein the feature includes recess feature.
30C13.According to method described in clause 29C13, wherein the recess feature includes trench.
31C13.It further include the electroconductive binder contacted with the first metallization pattern according to equipment described in clause 26C13.
32C13.According to equipment described in clause 31C13, wherein electroconductive binder is printed.
33C13.According to equipment described in clause 1C13, wherein the semiconductor wafer includes silicon.
34C13.According to equipment described in clause 33C13, wherein the semiconductor wafer includes crystalline silicon.
35C13.According to equipment described in clause 33C13, wherein the first front surface is N-shaped conduction type.
36C13.According to equipment described in clause 33C13, wherein first front surface is p-type electric-conducting type.
37C13.According to equipment described in clause 1C13, in which:
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 equipment described in clause 1C13, wherein the semiconductor wafer includes chamfering, and the first metal Changing pattern includes the conical section extended around chamfering.
39C13.According to equipment described in clause 38C13, wherein the conical section includes bus.
40C13.According to equipment described in clause 38C13, wherein the conical section includes connecting leading for discrete engagement pad Line.
1C14.A kind of method, comprising:
Marked on chip first quarter line drawing；And
Using vacuum along first quarter line drawing silicon wafer divided, to provide solar battery item.
2C14.According to method described in clause 1C14, wherein the quarter draws and draws including laser incising.
3C14.According to method described in clause 2C14, wherein the segmentation include the surface of chip and curved surface it Between apply vacuum.
4C14.According to method described in clause 3C14, wherein the curved surface includes vacuum manifold.
5C14.According to method described in clause 4C14, wherein the wafer support is on tape, the band is moved to vacuum discrimination Pipe, and the vacuum is applied by the band.
6C14.According to 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 one end at start to cut.
7C14.According to method described in clause 6C14, wherein the angle is substantially right angle.
8C14.According to method described in clause 6C14, wherein the angle is generally not right angle.
9C14.It further include applying uncured electroconductive binder grafting material according to method described in clause 3C14.
10C14.According to method described in clause 9C14, wherein first quarter line drawing and uncured electroconductive binder engage material Material position is in the similar face of chip.
11C14.According to method described in clause 10C14, wherein by selection laser power and/or first quarter line drawing The distance between uncured electroconductive binder grafting material, the laser incising, which is drawn, avoids making uncured electroconductive binder from connecing Condensation material solidification.
12C14.According to method described in clause 10C14, wherein the similar face is opposite with wafer surface, the chip Surface is supported by moving a wafer into the band of curved surface.
13C14.According to method described in clause 12C14, wherein the curved surface includes vacuum manifold.
14C14.According to method described in clause 9C14, wherein described be applied to draws progress later at the quarter.
15C14.According to method described in clause 9C14, wherein the progress after being applied to the segmentation.
16C14.According to method described in clause 9C14, wherein described apply includes silk-screen printing.
17C14.According to method described in clause 9C14, wherein described apply includes ink jet printing.
18C14.According to method described in clause 9C14, wherein described apply includes using masked-deposition.
19C14.According to method described in clause 3C14, wherein the 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 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 also includes:
Marked between third metallization pattern and the second metallization pattern second quarter line drawing so that first quarter line drawing be located at Between first metallization pattern and third metallization pattern；And
Along second quarter line drawing silicon wafer divided, to provide another solar battery item.
21C14.According to method described in clause 20C14, wherein first quarter line drawing and second quarter the distance between line drawing shape At width, the width defines the length-width ratio between about 1:2 and about 1:20, and wherein the length of chip is about 125mm or about 156mm。
22C14.According to 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 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 method described in clause 23C14, wherein the bus is in the 5mm of the first external margin.
25C14.It further include that the uncured conduction contacted with the finger-shaped material is glued according to method described in clause 22C14 Mixture grafting material.
26C14.According to method described in clause 19C14, wherein the first metallization pattern includes discrete engagement pad.
27C14.It further include the first metallization pattern on printing or wafer electroplating according to method described in clause 19C14.
28C14.According to method described in clause 3, further includes:
The solar battery item is arranged in the first superbattery, first superbattery includes at least 19 Solar battery item, each solar battery item have at least breakdown voltage of 10V, wherein the long side of adjacent solar battery item Overlapping, electroconductive binder grafting material are disposed there between；And
Conductive bonding material is solidified, the solar battery item of adjacent overlapping is electrically connected in series.
29C14.According to method described in clause 28C14, wherein the arrangement includes forming layered structure, the layering knot Structure includes encapsulant, and the method also includes to the laminated layered structure.
30C14.According to method described in clause 29C14, wherein the small part that is cured to is carried out in laminated period.
31C14.According to method described in clause 29C14, wherein the solidification does not carry out simultaneously with laminated.
32C14.According to method described in clause 29C14, wherein the encapsulant includes thermoplastic olefin polymer.
33C14.According to 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 method described in clause 28C14, wherein the arrangement includes being limited using metallization pattern feature Make the sprawling of conductive adhesive bond material.
35C14.According to method described in clause 34C14, wherein the metallization pattern feature is located at solar battery item Front surface on.
36C14.According to method described in clause 34C14, wherein the metallization pattern feature is located at solar battery item Back surface on.
37C14.According to method described in clause 28C14, further include the first superbattery with by the second superbattery string Join and applies electroconductive binder grafting material between the interconnection piece of connection.
38C14.According to 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 method described in clause 28C14, in which:
The solar battery item includes the first chamfering；
The long side of the overlapping solar battery item of the multiple solar battery item does not include the second chamfering；And
The width of the solar battery item is greater than the width of the overlapping solar battery item, so that the sun Energy cell strip and the overlapping solar battery item have roughly equal area.
40C14.According to method described in clause 28C14, in which:
The solar battery item includes the first chamfering；
The long side of the overlapping solar battery item of the multiple solar battery item includes the second chamfering；And
The long side of the overlapping solar battery item of the multiple solar battery item with do not include the first chamfering too The long side overlapping of positive energy cell strip.
1C15.A kind of method, comprising:
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 Portion edge is opposite；And
Formed between the first metallization pattern and the second metallization pattern first quarter line drawing.
2C15.According to method described in clause 1C15, in which:
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 method described in clause 2C15, in which:
First metallization pattern further includes first for intersecting with the first finger-shaped material and being located in the 5mm of the first external margin Bus；And
Second metallization pattern include intersect with the second finger-shaped material and be located at it is second total in the 5mm of the second external margin Line.
4C15.According to method described in clause 3C15, further includes:
On the first surface, third metallization pattern is not formed along the first external margin or the second external margin, it is described Third 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 Between one metallization pattern and third metallization pattern.
5C15.According to method described in clause 4C15, wherein first quarter line drawing and the second quarter line drawing divide one fixed width, institute The ratio of the length of width and semiconductor wafer is stated between about 1:2 to about 1:20.
6C15.According to method described in clause 5C15, wherein the length of the semiconductor wafer is about 156mm or about 125mm。
7C15.According to method described in clause 4C15, wherein the semiconductor wafer includes chamfering.
8C15.According to method described in clause 7C15, in which:
First quarter line drawing and the first external margin define the first solar-electricity pool area, the first solar-electricity pool area Including two chamferings and the first metallization pattern, the first solar-electricity pool area has the first area, first area The combined area of two chamferings is subtracted corresponding to 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 is not Including chamfering and including third metallization pattern, the second solar-electricity pool area has second area, second face Product corresponds 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 method described in clause 8C15, wherein the length is about 156mm or about 125mm.
10C15.According to method described in clause 4C15, wherein formed first quarter line drawing and formed the second quarter line drawing include swash Photoetching is drawn.
11C15.According to 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 method described in clause 11C15, wherein forming the first metallization pattern, forming the second metallization figure Case and formation third metallization pattern include silk-screen printing.
13C15.According to method described in clause 11C15, wherein forming the first metallization pattern includes forming multiple contacts Pad, the engagement pad include silver.
14C15.According to 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 method described in clause 14C15, wherein the first metallization pattern, the second metallization pattern and Three metallization patterns include copper.
16C15.According to method described in clause 4C15, wherein the first metallization pattern includes aluminium, tin, silver, copper and/or ratio The cheaper conducting wire of silver.
17C15.According to method described in clause 4C15, wherein the semiconductor wafer includes silicon.
18C15.According to method described in clause 17C15, wherein the semiconductor wafer includes crystalline silicon.
19C15.It further include on the second surface of the semiconductor wafer, according to 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 draw.
20C15.According to 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 method described in clause 4C15, wherein the 4th metallization pattern includes engagement pad.
22C15.It further include that conductive adhesive is applied to semiconductor wafer according to method described in clause 3C15.
23C15.It further include applying conductive adhesive and being connect with the first finger-shaped material according to method described in clause 22C15 Touching.
24C15.According to method described in clause 23C15, silk is carried out including the use of mask wherein applying conductive adhesive Wire mark brush or deposition.
25C15.According to method described in clause 3C15, further include along first quarter line drawing semiconductor wafer divided, with Form the first solar battery item including the first metallization pattern.
26C15.According to method described in clause 25C15, wherein the segmentation include apply vacuum to first quarter line drawing.
27C15.It further include that semiconductor wafer setting is being moved to vacuum according to method described in clause 26C15 Take.
28C15.It further include that conductive adhesive is applied to the first solar-electricity according to method described in clause 25C15 Pond item.
29C15.According to method described in clause 25C15, further includes:
First solar battery item is arranged in the first superbattery, first superbattery includes at least 19 Solar battery item, each solar battery item have at least breakdown voltage of 10V, wherein the long side of adjacent solar battery item Overlapping, conductive adhesive are disposed there between；And
Conductive adhesive is solidified, the solar battery item of adjacent overlapping is electrically connected in series.
30C15.According to method described in clause 29C15, wherein the arrangement includes forming layered structure, the layering knot Structure includes encapsulant, and the method also includes to the laminated layered structure.
31C15.According to method described in clause 30C15, wherein the small part that is cured to is carried out in laminated period.
32C15.According to method described in clause 30C15, wherein the solidification does not carry out simultaneously with laminated.
33C15.According to method described in clause 30C15, wherein the encapsulant includes thermoplastic olefin polymer.
34C15.According to 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 method described in clause 29C15, wherein the arrangement includes being limited with metallization pattern feature The sprawling of conductive adhesive.
36C15.According to 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 method described in clause 29C15, further include the first superbattery with by the second superbattery string Join and applies conductive adhesive between the interconnection piece of connection.
38C15.According to 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 method described in clause 29C15, in which:
First solar battery item includes the first chamfering；
The long side of the overlapping solar battery item of first superbattery does not include the second chamfering；And
The width of first solar battery item is greater than the width of overlapping solar battery item, so that the first solar battery item There is roughly equal area with overlapping solar battery item.
40C15.According to method described in clause 29C15, in which:
First solar battery item includes the first chamfering；
The long side of the overlapping solar battery item of first superbattery includes the second chamfering；And
The long side and the long side weight for the first solar battery item for not including the first chamfering of the overlapping solar battery item It is folded.
1C16.A kind of method, comprising:
Silicon wafer is obtained or provides, the silicon wafer includes front surface metallization pattern, the front surface metallization pattern The first bus or engagement pad including the first external margin arrangement parallel and adjacent to the chip are arranged, and are parallel to simultaneously And the second bus for arranging of the second external margin of the neighbouring chip or engagement pad row, the second external margin of the chip with First edge is opposite and parallel；
Along one or more quarter of first external margin and second external margin for being parallel to the chip Line drawing divides the silicon wafer, to form multiple rectangle solar batteries, wherein first bus or engagement pad row are parallel In and neighbouring first rectangle solar battery long external margin arrangement, and second bus or engagement pad row are parallel In and neighbouring second rectangle solar battery long external margin arrangement；And
Rectangle solar battery arrangement is in line, wherein the long side of adjacent solar battery overlaps each other and passes It engages to the property led, the solar battery is electrically connected in series, to form superbattery；
Wherein in first bus or the engagement pad row and the superbattery of first rectangle solar battery The bottom surface of adjacent rectangle solar battery is overlapped and is conductively joined to the bottom surface.
2C16.According to method described in clause 1C16, wherein the second bus on second rectangle solar battery or connecing Touch pad row is Chong Die with the bottom surface of adjacent rectangle solar battery in the superbattery and is conductively joined to the bottom Portion surface.
3C16.According to method described in clause 1C16, wherein the silicon wafer is square or dead square silicon wafer.
4C16.According to method described in clause 3C16, wherein the silicon wafer has length about 125mm or length about The side of 156mm.
5C16.According to method described in clause 3C16, wherein the ratio of the length of each rectangle solar battery and width is situated between Between about 2:1 and about 20:1.
6C16.According to method described in clause 1C16, wherein the silicon wafer is crystal silicon wafer.
7C16.According to 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 central area of the efficiency than silicon wafer of electricity It is lower.
8C16.According to 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 be electrically connected 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.
9C16.According to 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 orientation and at least third bus between them or engagement pad row, with And the multiple parallel fingers of third of third bus or engagement pad row are orientated normal to and are electrically connected to, and in the silicon wafer Piece is partitioned to form after multiple rectangle solar batteries, and third bus or engagement pad arrangement are set to parallel and adjacent to the The long external margin of three rectangle solar batteries.
10C16.The first bus or engagement pad are applied to according to method described in clause 1C16, including by conductive adhesive Row conductively engages whereby by first rectangle solar battery to adjacent solar battery.
11C16.According to method described in clause 10C16, wherein the metallization pattern includes being configured to limit conduction Property adhesive sprawling barrier.
12C16.Apply conductive adhesive according to method described in clause 10C16, including by silk-screen printing.
13C16.Apply conductive adhesive according to method described in clause 10C16, including by ink jet printing.
14C16.According to 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 method described in clause 1C16, wherein being included in along one or more quarter line drawing segmentation silicon wafer Apply vacuum between the bottom surface and bent support surface of silicon wafer, so that silicon wafer is against bent support surface curvature, from And along one or more quarter line drawing silicon wafer cut.
16C16.According to method described in clause 1C16, in which:
The silicon wafer be include the dead square silicon wafer of chamfering, and the silicon wafer segmentation after formed described in Multiple rectangle solar batteries, one or more of described rectangle solar battery include one or more in the chamfering It is a；And
By being greater than the width vertical with including the long axis of the rectangle solar battery of chamfering and lacking The vertical width of the long axis of the rectangle solar battery of few chamfering, thus select to carve the interval between line drawing with The chamfering is compensated, therefore, the multiple rectangle solar-electricity during superbattery work, in the superbattery The area that each of pond is exposed under sunlight is substantially equal.
17C16.According to method described in clause 1C16, including superbattery is arranged between transparent front plate and back plate In layered structure, and the layered structure is carried out laminated.
18C16.According to method described in clause 17C16, wherein carrying out laminated completion setting super to the layered structure The solidification of conductive adhesive, adjacent rectangle solar battery is conducted between adjacent rectangle solar battery in grade battery It is joined to each other to property.
19C16.According to 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, The position of the dead color striped and width correspond to the position in gap between the superbattery of the two or more parallels And width, so that the white portion of the back plate is invisible by the gap respectively arranged between superbattery in assembling module.
20C16.According to method described in clause 17C16, wherein the foreboard and the back plate are glass plates, and described Superbattery is encapsulated in thermoplastic olefin layer, and the thermoplastic olefin layer is clipped between glass plate.
21C16.It is arranged in the first module according to method described in clause 1C16, including by superbattery, described first Module includes the terminal box with the second terminal box of the second solar energy module at pairing arrangement.
1D.A kind of solar energy module, comprising:
Multiple superbatteries of two or more parallels are arranged to, each superbattery includes that arrangement is straight multiple The silicon solar cell of rectangle 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 battery, first solar-electricity Pond is located at the middle 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, and the stress relief feature reconciles the electrical interconnection and institute State the differential thermal expansion between the silicon solar cell that electrical interconnection is engaged.
2D.According to solar energy module described in clause 1D, including second on the back surface of the second solar battery Hiding tap engagement pad, second solar battery are located near the first solar battery, and are located at along second The middle position of superbattery, wherein by the first electrical interconnection to be electrically connected to second hidden for the first hiding tap engagement pad The tap engagement pad of hiding.
3D.According to 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 solar energy module described in clause 1D, comprising: second on the back surface of the second solar battery Hiding tap engagement pad, second solar battery are located at another middle position along first superbattery； Conductively it is joined to the second electrical interconnection of the second hiding tap engagement pad；And bypass diode, the bypass two Pole pipe utilizes the first electrical interconnection and the second electrical interconnection and point hiding positioned at the first hiding tap engagement pad and second Solar battery parallel connection electrical connection between junction contacts pad.
5D.According to 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 for the first solar battery in a row that the long axis of one solar battery extends in parallel One in head engagement pad, and wherein the first electrical interconnection is conductively joined to multiple hiding each of contacts, And its length that the first solar battery is substantially equal to along the span of the long axis.
6D.According to 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 battery is adjacent, and first electrical interconnection is not along the long axis of the solar battery from institute It states hiding tap engagement pad substantially to extend internally, and the back surface metallization pattern on the first solar battery is institute It states interconnection piece and conducting path is provided, the conducting path has film resistor of 5 ohm less than or equal to about every square.
7D.According to solar energy module described in clause 6D, wherein the film resistor less than or equal to about every square 2.5 Europe Nurse.
8D.According to solar energy module described in clause 6D, wherein the first interconnection piece includes being located in stress relief feature Two protruding portions on opposite sides, and one of protruding portion is conductively joined to the first hiding tap engagement pad.
9D.According to solar energy module described in clause 8D, wherein described two protruding portions have different length.
10D.According to solar energy module described in clause 1D, wherein the first electrical interconnection includes alignment characteristics, the alignment The required alignment of feature identification and the first hiding tap engagement pad.
11D.According to solar energy module described in clause 1D, wherein the first electrical interconnection includes alignment characteristics, the alignment The required alignment of feature identification and the edge of the first superbattery.
12D.According to solar energy module described in clause 1D, with another solar energy being connected electrically in overlapping region Module arrangement is at overlapping stacking mode.
13D.A kind of solar energy module, comprising:
Glass front plate；
Back plate；
Multiple superbatteries of two or more parallels are arranged between the glass front plate and the back plate, each Superbattery includes the silicon solar cell of the straight multiple rectangles of arrangement or substantial rectangular, 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 battery being wherein overlapped, which engages, provides mechanical plasticity for the superbattery, To within the temperature range of about -40 DEG C to about 100 DEG C, reconcile on the direction for being parallel to superbattery row the superbattery with Thermal expansion mismatch between the glass front plate and be unlikely to damage the solar energy module；And
Wherein the rigid conductibility between the first superbattery and the first flexible electrical interconnection, which engages, forces described the One flexible electrical interconnection reconciles on the direction arranged perpendicular to the superbattery within the temperature range of about -40 DEG C to about 180 DEG C Thermal expansion mismatch between first superbattery and the first flexible electrical interconnection and be unlikely to damage the solar energy Module.
14D.According to solar energy module described in clause 13D, the adjacent solar battery that is wherein overlapped in superbattery it Between conductibility engagement utilize different conductive adhesives the conductibility engagement between superbattery and flexible electrical interconnection.
15D.According to solar energy module described in clause 14D, two of them conductive adhesive can be walked in identical processing Solidification in rapid.
16D.According to solar energy module described in clause 13D, wherein at least one solar battery side in superbattery Conductibility engagement and the different conductive adhesive of the conductibility of solar battery other side engagement utilization.
17D.According to solar energy module described in clause 16D, two of them conductive adhesive can be walked in identical processing Solidification in rapid.
18D.According to 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 solar energy module described in clause 13D, wherein the conductibility between the adjacent solar battery being overlapped It is bonded on perpendicular to the thickness on solar battery direction less than or equal to about 50 microns, and perpendicular to solar battery direction On thermal conductivity greater than or equal to about 1.5W/ (m-K).
20D.According to solar energy module described in clause 13D, wherein the first flexible electrical interconnection receiving itself is greater than or waits In about 40 microns of thermal expansions or it is heat-shrinked.
21D.According to solar energy module described in clause 13D, wherein being conductively joined in the first flexible electrical interconnection super The part of grade battery in it is band-like, formed by copper, and the thickness on the direction on the surface engaged perpendicular to it with solar battery Degree is less than or equal to about 50 microns.
22D.According to solar energy module described in clause 21D, wherein being conductively joined in the first flexible electrical interconnection super The part of grade battery in it is band-like, formed by copper, and the thickness on the direction on the surface engaged perpendicular to it with solar battery Degree is less than or equal to about 30 microns.
23D.According to 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 battery, 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 solar energy module described in clause 21D, wherein in the plane of the solar cell surface, first Flexible electrical interconnection has in the direction perpendicular to the direction of current flow for flowing through the interconnection piece greater than or equal to about 10mm Width.
25D.According to solar energy module described in clause 21D, wherein the first flexible electrical interconnection is conductively joined to too Positive energy battery nearby compares the first electrical interconnection and provides the conducting wire of more high conductance.
26D.According to 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, comprising:
Multiple superbatteries of two or more parallels are arranged to, each superbattery includes that arrangement is straight multiple The silicon solar cell of rectangle 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 battery back surface, the hiding tap engagement pad Non-conducting high current in normal work；
Wherein first solar battery is located at along first super electricity in superbattery described in first row The middle position in pond, and the hiding tap engagement pad is electrically connected in parallel in superbattery described in second row at least Second solar battery.
28D.According to solar energy module described in clause 27D, including being joined to hiding tap engagement pad and will be described The electrical interconnection to the second solar battery is electrically interconnected in hiding tap engagement pad, wherein the span essence of the electrical interconnection The upper length not equal to the first solar battery, and the back surface metallization pattern on the first solar battery is described hides Tap engagement pad conducting path is provided, the conducting path has less than or equal to about every square 5 ohm of film resistor.
29D.According to solar energy module described in clause 27D, wherein the multiple superbattery is arranged to three or more Parallel, the span of these parallels are equal to width of the solar energy module on the direction arranged perpendicular to these, and institute It states hiding at least one solar battery that hiding tap engagement pad is electrically connected in each superbattery row 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 electronics of the interconnection piece between hiding tap engagement pad Device connection.
30D.According to solar energy module described in clause 27D, including flexible electrical interconnection, the flexibility electrical interconnection conduction It is joined to property the hiding tap engagement pad, to be electrically coupled to the second solar battery, in which:
Conductively be joined in the flexibility electrical interconnection part of the hiding tap engagement pad in it is band-like, by Copper is formed, and the thickness in the vertical direction on the surface that the flexible electrical interconnection is engaged with the solar battery Less than or equal to about 50 microns；And
Described in the conductibility between the hiding tap engagement pad and the flexible electrical interconnection engage and is forced Flexible electrical interconnection bears the thermal expansion mismatch between first solar battery and the flexible electrical interconnection, and Within the temperature range of about -40 DEG C to about 180 DEG C, reconcile between first solar battery and second solar battery by Relative motion caused by thermal expansion makes the relative motion be unlikely to damage the solar energy module.
31D.According to solar energy module described in clause 27D, wherein the solar energy module is at work, first hides Engagement pad can conduct the electric current bigger than the electric current generated in any single solar battery.
32D.According to solar energy module described in clause 27D, wherein being covered on above the first hiding tap engagement pad The front surface of the first solar battery do not occupied by engagement pad or any other interconnection piece feature.
33D.According to solar energy module described in clause 27D, wherein not by first in the front surface of the first solar battery Any region of a part overlapping of adjacent solar battery in superbattery is not all by engagement pad or any other interconnection piece Feature occupies.
34D.According to 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 solar energy module described in clause 34D, wherein having the battery of hiding tap engagement pad to compare Battery without hiding tap engagement pad can have biggish smooth collecting zone.
36D.According to 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, comprising:
Glass front plate；
Back plate；
Multiple superbatteries of two or more parallels are arranged between the glass front plate and the back plate, each Superbattery includes the silicon solar cell of the straight multiple rectangles of arrangement or substantial rectangular, 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 battery being wherein overlapped is formed by the first conductive adhesive, and should Flexible conductor is combined with the modulus of shearing less than or equal to about 800 megapascal.And
Wherein the rigid conductibility between the first superbattery and the described first flexible electrical interconnection is engaged by second Conductive adhesive is formed, and rigidity conductibility engagement has the modulus of shearing greater than or equal to about 2000 megapascal.
38D.According to 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 solidify in same procedure of processing.
39D.According to solar energy module described in clause 37D, wherein the conductibility between the adjacent solar battery being overlapped It is bonded on perpendicular to the thickness on solar battery direction less than or equal to about 50 microns, and perpendicular to solar battery direction On thermal conductivity greater than or equal to about 1.5W/ (m-K).
40D.According to 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, comprising: quantity N is greater than or equal to about 150 rectangles or the silicon sun of substantial rectangular Energy battery, the silicon solar cell are arranged to multiple superbatteries in two or more parallels, each superbattery packet The straight multiple silicon solar cells of arrangement are included, wherein the long side of adjacent silicon solar cell is overlapped and conductively connects It closes each other, the silicon solar cell is electrically connected in series；Wherein superbattery be electrically connected, with provide greater than or equal to about 90 volts of High Level DC Voltage.
2E.It is mutual according to solar energy module described in clause 1E, including one or more flexible electrical interconnections, the flexible electrical Even part is arranged to for multiple superbatteries being electrically connected in series, to provide High Level DC Voltage.
3E.According to solar energy module described in clause 2E, including module level power electronic device, the module level power electricity Sub- device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.
4E.According to 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.It is each to adjacent serial connected super battery row's including being electrically connected to according to solar energy module described in clause 1E 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 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 row.
7E.According to solar energy module described in clause 6E, wherein if individually a pair of superbattery arranges the voltage at both ends Lower 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 solar energy module described in clause 1E, the module including being electrically connected to 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 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 solar energy module described in clause 9E, wherein if individually the voltage at superbattery row both ends is lower than 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 solar energy module described in clause 1E, the module level including 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 function Rate electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.
12E.According to solar energy module described in clause 11E, wherein the module level power electronic device senses each list The voltage at only superbattery both ends, and each individual superbattery is operated at optimum current-voltage power point.
13E.According to solar energy module described in clause 12E, wherein if individually the voltage at superbattery both ends is lower than Threshold value, then module level power electronic device disconnects this individual superbattery from the circuit for providing High Level DC Voltage.
14E.According to solar energy module described in clause 1E, wherein the tap electricity that each superbattery is hidden is segmented into Multiple segmentations, the solar energy module include each segmentation being electrically connected in each superbattery by hiding tap Module level power electronic device is segmented for being electrically connected in series two or more to provide High Level DC Voltage, the module level function Rate electronic device includes the inverter for High Level DC Voltage to be transformed into alternating voltage.
15E.According to 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 solar energy module described in clause 15E, wherein if individually the voltage at segmentation both ends is lower than threshold value, Then this is individually segmented from the circuit for providing High Level DC Voltage and disconnects by module level power electronic device.
17E.The solar energy module according to any one of clause 4E, 6E, 9E, 12E or 15E, wherein optimum current-electricity Pressing power points is maximum current-voltage power point.
18E.The solar energy module according to any one of clause 3E to 17E, wherein the module level power electronic device Part lacks DC to DC boost parts.
19E.The solar energy module according to any one of clause 1E to 18E, wherein N greater than or equal to about 200, be greater than Or be 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 be greater than or wait In about 700.
20E.The solar energy module according to any one of clause 1E to 19E, wherein the High Level DC Voltage 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, 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, comprising:
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 150 rectangles or the silicon sun of substantial rectangular Energy battery, the silicon solar cell is arranged to multiple superbatteries in two or more parallels, every in each module A superbattery includes that two or more in the straight silicon solar cell, wherein adjacent silicon is arranged in the module The long side of solar battery is overlapped and is conductively joined to each other, and the silicon solar cell is electrically connected in series, and Superbattery electrical connection in each module, so that module provides the high-voltage direct-current output greater than or equal to about 90 volts；And
Wherein the inverter is electrically connected to two or more solar energy modules, thus by the high-voltage direct-current of these modules Output is transformed into alternating current.
22E.According to 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 for the superbattery in solar energy module being electrically connected in series, To provide the high-voltage direct-current output of solar energy module.
23E.According to solar energy photovoltaic system described in clause 21E, including the two or more sun being electrically connected with parallel connection Can at least third solar energy module that is electrically connected in series of the first solar energy module in module, wherein third solar energy module include Quantity N ' is arranged to greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, the silicon solar cell Multiple superbatteries in two or more parallels, each superbattery in the third solar energy module includes the mould Arranged in block it is two or more in the straight silicon solar cell, wherein the long side of adjacent silicon solar cell is overlapped And be conductively joined to each other, the silicon solar cell is electrically connected in series, and super in third solar energy module Grade battery electrical connection, so that module provides the high-voltage direct-current output greater than or equal to about 90 volts.
24E.According to solar energy photovoltaic system described in clause 23E, including the two or more sun being electrically connected with parallel connection At least the 4th solar energy module that the second solar energy module in energy module is electrically connected in series, wherein the 4th solar energy module includes Quantity N ' is arranged to greater than or equal to about 150 rectangles or the silicon solar cell of substantial rectangular, the silicon solar cell Multiple superbatteries in two or more parallels, each superbattery in the 4th solar energy module includes the mould Arranged in block it is two or more in the straight silicon solar cell, wherein the long side of adjacent silicon solar cell is overlapped And be conductively joined to each other, the silicon solar cell is electrically connected in series, and super in the 4th solar energy module Grade battery electrical connection, so that module provides the high-voltage direct-current output greater than or equal to about 90 volts.
25E.According to 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.The solar energy photovoltaic system according to any one of clause 21E to 25E, including blocking diode, it is described Blocking diode arrangement for prevent because any one solar energy module occur short circuit due to dissipate other solar energy modules generation function Rate.
27E.The solar energy photovoltaic system according to 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.The solar energy photovoltaic system according to 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 solar energy module parallel connection is electrically connected by the header box It connects.
29E.According to solar energy photovoltaic system described in clause 28E, wherein the header box includes fuse, the fuse cloth Set for prevent because any one solar energy module occur short circuit due to dissipate other solar energy modules generation power.
30E.According to solar energy photovoltaic system described in clause 28E or clause 29E, wherein the header box includes choked flow two Pole pipe, the blocking diode arrangement is for preventing other solar energy modules that dissipate because of the generation short circuit of any one solar energy module The power of generation.
31E.The solar energy photovoltaic system according to any one of clause 21E to 30E, wherein the inverter is configured For in the direct current pressing operation solar energy module for being higher than minimum value, the minimum value to be configured to avoid module reverse-biased.
32E.The solar energy photovoltaic system according to any one of clause 21E to 30E, wherein the inverter is configured Reverse-biased for identification, and in the electric pressing operation solar energy module for avoiding the occurrence of reverse-biased.
33E.The solar energy module according to any one of clause 21E to 32E, wherein N greater than or equal to about 200, it is big In or be 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 greater than Or it is equal to about 700.
34E.The solar energy module according to any one of clause 21E to 33E, wherein the High Level DC Voltage 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, 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.
35E.The solar energy photovoltaic system according to any one of clause 21E to 34E, is located on roof.
36E.A kind of solar energy photovoltaic system, comprising:
First solar energy module, including 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 superbattery includes cloth Straight multiple silicon solar cells are set, 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 superbattery electrical connection, for being supplied to inversion above or equal to about 90 volts of High Level DC Voltage Direct current is transformed into alternating current again by device, inverter.
37E.According to solar energy photovoltaic system described in clause 36E, wherein the inverter is and the first solar energy module Integrated micro- inverter.
38E.According to 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 for 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.The solar energy photovoltaic system according to any one of clause 36E to 38E, including with the first solar energy module At least the second solar energy module being 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 rectangle or substantial rectangular, the silicon solar cell are arranged to multiple in two or more parallels Superbattery, each superbattery includes that the straight silicon solar electricity is arranged in the module in the second solar energy module It is two or more in pond, wherein the long side of adjacent silicon solar cell is overlapped and is conductively joined to each other, it will be described Silicon solar cell is electrically connected in series, and the second solar energy module superbattery electrical connection so that module offer be greater than or High-voltage direct-current output equal to about 90 volts.
40E.The solar energy module according to any one of clause 36E to 39E, is arrived wherein the inverter lacks direct current DC boosting component.
41E.The solar energy module according to any one of clause 36E to 40E, wherein N greater than or equal to about 200, it is big In or be 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 greater than Or it is equal to about 700.
42E.The solar energy module according to any one of clause 36E to 41E, wherein the High Level DC Voltage 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, 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.
43E.A kind of solar energy module, comprising:
Greater than or equal to about 250 N number of rectangles or the silicon solar cell of substantial rectangular, the silicon solar cell It is arranged to the superbattery of multiple series connections in two or more parallels, each superbattery includes that arrangement is straight Multiple silicon solar cells, wherein the long side of adjacent silicon solar cell is overlapped and not only conductive but also thermally conductive adhesive is used to pass It is engaged with each other to the property led, the silicon solar cell in the superbattery is electrically connected in series；And
Every 25 solar batteries are less than a bypass diode；
Wherein the not only conductive but also thermally conductive adhesive forms engagement between adjacent solar battery, these are bonded on vertical Directly in the thickness on solar battery direction less than or equal to about 50 microns, and perpendicular to the thermal conductivity on solar battery direction Rate is greater than or equal to about 1.5W/ (m-K).
44E.According to solar energy module described in clause 43E, wherein the superbattery is encapsulated between foreboard and back plate Thermoplastic olefin layer in.
45E.According to solar energy module described in clause 43E, wherein the superbattery is encapsulated in glass front plate and back plate Between.
46E.According to solar energy module described in clause 43E, the bypass diode that every 30 solar batteries include is less than One, every 50 solar batteries bypass diode for including is less than one or bypass that every 100 solar batteries include Diode is less than one, perhaps only includes single bypass diode or do not include bypass diode.
47E.According to 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 being no more than ten bypasses two Pole pipe.
48E.According to solar energy module described in clause 43E, wherein the conductibility between the solar battery being overlapped engages Mechanical plasticity is provided for superbattery, so that reconciliation is parallel to super electricity within the temperature range of about -40 DEG C to about 100 DEG C Thermal expansion mismatch on the direction of pond row between superbattery and glass front plate makes the thermal expansion mismatch be unlikely to damage the sun It can module.
49E.The solar energy module according to any one of clause 43E to 48E, wherein N greater than or equal to about 300, it is big In or be 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.The solar energy module according to any one of clause 43E to 49E, wherein the superbattery electrical connection with There is provided 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 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.
51E.A kind of solar energy system, comprising:
According to solar energy module described in clause 43E；And
Inverter, the inverter are electrically connected to the solar energy module, and are configured for conversion from the sun The direct current output of energy module is to provide exchange output.
52E.According to solar energy system described in clause 51E, wherein the inverter lacks DC to DC boost parts.
53E.According to solar energy system described in clause 51E, wherein the inverter is configured for being higher than minimum value Direct current pressing operation solar energy module, the minimum value is configured to avoid solar battery reverse-biased.
54E.According to solar energy system described in clause 53E, wherein minimum amount of voltage that depends on temperature.
55E.According to solar energy system described in clause 51E, 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.
56E.According to 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.The solar energy system according to any one of clause 51E to 56E, wherein the inverter be with it is described too The integrated micro- inverter of positive energy module.
1F.A method of manufacture solar battery, which comprises
Solar cell wafer is promoted along curved surface；And
Apply vacuum between curved surface and the bottom surface of solar cell wafer, so that solar cell wafer is supported It is bent by curved surface, to cut solar cell wafer along one or more previous ready quarter line drawing, thus Multiple solar batteries are partitioned into from solar cell wafer.
2F.According to method described in clause 1F, wherein the curved surface is the bottom surface to solar cell wafer Apply the bending part of the upper surface of the vacuum manifold of vacuum.
3F.According to 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 the area of solar cell wafer is cut in vacuum manifold Reach maximum intensity in domain.
4F.According to method described in clause 2F or clause 3F, including using porous belts along table in the bending of 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 Surface.
5F.According to method described in clause 4F, wherein the perforation is arranged on porous belts, so that solar cell wafer At least one perforation on porous belts must be covered on above along the leading edge and rear of itself direction of travel.
6F.The method according to any one of clause 2F to 5F, comprising: along the flat region of the upper surface of vacuum manifold Domain promotes solar cell wafer, reaches the transition in vacuum manifold upper surface with first curvature and is bent region；It then will too Positive energy battery wafer is advanced in the cutting region for cutting solar cell wafer in vacuum manifold upper surface, the institute of vacuum manifold Cutting region is stated with torsion, torsion is received tighter than first curvature.
7F.According to method described in clause 6F, wherein continuous geometry of the curvature of the transitional region by increased curvature Function definition.
8F.According to method described in clause 7F, wherein continuous geometry of the curvature of the cutting region by increased curvature Function definition.
9F.According to method described in clause 6F, have the including the solar battery of cutting to be advanced in vacuum manifold The cutting rear region of three curvature, third curvature are received tighter than torsion.
10F.According to method described in clause 9F, wherein transition is bent 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 method described in clause 7F, clause 8F or clause 10F, wherein the continuous geometry function of increased curvature It is clothoid.
12F.The method according to any one of clause 1F to 11F, 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 It carves line drawing and asymmetric stress distribution is provided, thus help to carve the core that line drawing forms single cutting crackle along every, and Help individually to cut crackle and be spread along every quarter line drawing.
13F.The method according to any one of clause 1F to 12F, including the solar battery that will cut from bending table It is removed in face, wherein by solar battery, before removing in curved surface, the edge of the solar battery of cutting is not contacted.
14F.The method according to any one of clause 1F to 13F, comprising:
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 energy The top surface portion of battery wafer；
Wherein the solar battery of each cutting includes a part of conduction being arranged along the cut edge of its top surface Adhesive bond material.
15F.Quarter line drawing is marked according to method described in clause 14F, including laser, then applies electroconductive binder and engages material Material.
16F.According to method described in clause 14F, including apply electroconductive binder grafting material, subsequent laser marks quarter and draws Line.
17F.A kind of solar battery system from the cutting manufactured by method described in any one of clause 14F to 16F Make the method for solar battery string, wherein the solar battery of the cutting is rectangle, which comprises
Multiple rectangle solar batteries arrangement is in line, wherein the long side of adjacent rectangle solar battery is in a manner of covering Overlapping, wherein a part of electroconductive binder grafting material is arranged between adjacent rectangle solar battery；And
The conductive bonding material is solidified, so that the rectangle solar battery of adjacent overlapping is engaged with each other, and by it Be electrically connected in series.
18F.The method according to 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 making solar battery string, which comprises
Rear surface metallization pattern is formed on each battery in one or more square solar batteries；
Using single template, in single stencilization step by complete front surface metallization pattern be printed onto one or On each battery in multiple square solar batteries；
Each square solar battery is divided into two or more rectangle solar batteries, thus with one Or multiple square solar batteries form multiple rectangle solar batteries, before each rectangle solar battery has completely Surface metalation pattern and rear surface metallization pattern；
Multiple rectangle solar batteries are in line arrangement, wherein the long side of adjacent rectangle solar battery is in a manner of covering Overlapping；And
Rectangle solar battery in the adjacent overlapping rectangles solar battery of every a pair is conductively engaged and is arrived each other, Allow conductive bonding material be arranged between the two rectangle solar batteries, for by this to one in rectangle solar battery The front surface metallization pattern of battery is electrically connected to this and metallizes to the rear surface of another battery in rectangle solar battery Pattern, so that the multiple rectangle solar battery is electrically connected in series.
2G.According to method described in clause 1G, wherein for limiting one or more square solar batteries in template On front surface metallization pattern one or more features all parts be all limited to during stencilization with the template In be located at the physical connections of other parts locating for template in plane.
3G.According to method described in clause 1G, wherein the front surface metallization pattern packet on each rectangle solar battery Multiple finger-shaped materials of the long side orientation perpendicular to rectangle solar battery are included, and the finger-shaped material in front surface metallization pattern is all It is not physically connected to each other by front surface metallization pattern.
4G.According to method described in clause 3G, wherein the finger-shaped material has about 10 microns to about 90 microns of width.
5G.According to method described in clause 3G, wherein the finger-shaped material has about 10 microns to about 50 microns of width.
6G.According to method described in clause 3G, wherein the finger-shaped material has about 10 microns to about 30 microns of width.
7G.According to method described in clause 3G, wherein the finger-shaped material has the preceding table perpendicular to rectangle solar battery About 10 microns to about 50 microns of the height in face.
8G.According to method described in clause 3G, wherein the finger-shaped material is with the front surface perpendicular to rectangle solar energy About 30 microns or bigger height.
9G.According to method described in clause 3G, wherein the front surface metallization pattern packet on each rectangle solar battery Multiple engagement pads are included, the engagement pad is disposed parallel to and the edge of the long side of neighbouring rectangle solar battery, wherein often A engagement pad is positioned corresponding to the end of finger-shaped material.
10G.According to method described in clause 3G, wherein the rear surface metallization pattern packet on each rectangle solar battery Multiple engagement pads are included, the engagement pad is in a row parallel and adjacent to the edge arrangement of the long side of rectangle solar battery, and And the rectangle solar battery of the adjacent overlapping of every a pair is arranged so that this to a solar-electricity in rectangle solar battery Each rear surface engagement pad on pond and this metallize to the front surface on another solar battery in rectangle solar battery Correspondence finger-shaped material in pattern is aligned and is electrically connected to the corresponding finger-shaped material.
11G.According to method described in clause 3G, wherein the rear surface metallization pattern packet on each rectangle solar battery Include the bus of the edge extension parallel and adjacent to the long side of rectangle solar battery, and the rectangle of the adjacent overlapping of every a pair Solar battery be arranged so that this on a solar battery in rectangle solar battery bus and this to rectangle too The finger-shaped material in front surface metallization pattern in positive energy battery on another solar battery is overlapped and is electrically connected to the finger Shape object.
12G.According to method described in clause 3G, in which:
Front surface metallization pattern on each rectangle solar battery includes multiple engagement pads, and the engagement pad is arranged to Parallel and adjacent to the edge of the long side of rectangle solar battery, wherein each engagement pad is positioned corresponding to the end of finger-shaped material Portion；
The rear surface metallization pattern on each rectangle solar battery includes multiple engagement pads, the engagement pad quilt It is disposed parallel to and a row at the edge of the long side of the neighbouring rectangle solar battery；And
The rectangle solar battery of the adjacent overlapping of every a pair is arranged so that this to one in rectangle solar battery too It is positive can each of on battery the rear surface engagement pad and this to the institute on another solar battery in rectangle solar battery The corresponding engagement pad in front surface metallization pattern is stated to be aligned and be electrically connected to corresponding engagement pad.
13G.According to method described in clause 12G, wherein the rectangle in the rectangle solar battery of the adjacent overlapping of every a pair Solar battery passes through the discrete of the conductive bonding material being arranged between the front surface engagement pad of overlapping and rear surface engagement pad It is joined to each other to partial conductance.
14G.According to method described in clause 3G, wherein the rectangle in the rectangle solar battery of the adjacent overlapping of every a pair is too Positive energy battery passes through the front surface metallization pattern being arranged in this to a solar battery in rectangle solar battery and should To the overlapped ends of the finger-shaped material in the rear surface metallization pattern of another solar battery in rectangle solar battery it Between the discrete parts of conductive bonding material be conductively joined to each other.
15G.According to method described in clause 3G, wherein the rectangle in the rectangle solar battery of the adjacent overlapping of every a pair is too Positive energy battery passes through the front surface metallization pattern being arranged in this to a solar battery in rectangle solar battery and should To the overlapped ends of the finger-shaped material in the rear surface metallization pattern of another solar battery in rectangle solar battery it 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 be described One or more electrical interconnections in finger-shaped material.
16G.According to method described in clause 3G, in which:
The front surface metallization pattern on each rectangle solar battery includes multiple engagement pads, the contact shield It is set to the edge of the long side parallel and adjacent to the rectangle solar battery, wherein each engagement pad is positioned corresponding to finger-like The end of object；And
The rectangle solar battery in the rectangle solar battery of the adjacent overlapping of every a pair is by being arranged in this to rectangle The front surface metallization pattern of a solar battery in solar battery and this to another in rectangle solar battery The discrete parts of the conductive bonding material between engagement pad in the rear surface metallization pattern of solar battery conductively connect It closes each other.
17G.According to method described in clause 3G, in which:
The front surface metallization pattern on each rectangle solar battery includes multiple engagement pads, the contact shield It is set to the edge of the long side parallel and adjacent to the rectangle solar battery, wherein each engagement pad is positioned corresponding to finger-like The end of object；And
Rectangle solar battery in the rectangle solar battery of the adjacent overlapping of every a pair by setting this to rectangle too It is positive can a solar battery in battery front surface metallization pattern and this in rectangle solar battery another too It is positive can dotted line between the engagement pad in the rear surface metallization pattern of battery or solid line conductive bonding material each other conductively The one or more in the finger-shaped material is electrically interconnected for engagement, the dotted line or solid line conductive bonding material.
18G.The method according to any one of clause 1G to 17G, wherein front surface metallization pattern is formed by silver paste.
1H.A method of manufacturing multiple solar batteries, which comprises
One or more front surface amorphous silicon layers are deposited in the front surface of crystal silicon wafer, in solar cell working When, 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 crystalline substance The opposite side of the front surface of body silicon wafer；
By one or more front surface amorphous silicon layer patterns, to form one in one or more front surface amorphous silicon layers A 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 A 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 right in different a pair It is placed in the middle or substantially placed in the middle on the front surface groove and rear surface groove answered.
2H.According to method described in clause 1H, including one or more front surface grooves are formed, to penetrate front surface amorphous The front surface of silicon layer arrival crystal silicon wafer.
3H.According to method described in clause 1H, including one or more rear surface grooves are formed, to penetrate one or more The rear surface of rear surface amorphous silicon layer arrival crystal silicon wafer.
4H.According to method described in clause 1H, including forming front surface passivation layer with after with transparent conductive oxide Surface passivation layer.
5H.According to method described in clause 1H, including laser is used to cause thermal stress in crystal silicon wafer, one Crystal silicon wafer is cut at a or multiple cutting planes.
6H.According to 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 method described in clause 1H, wherein one or more front surface amorphous silicon layer/crystal silicon layers and crystalline silicon Chip forms n-p junction.
8H.According to method described in clause 7H, including from its back-surface side sliced crystal silicon wafer.
9H.According to method described in clause 1H, wherein one or more rear surface amorphous silicon layer/crystal silicon layers and crystalline silicon Chip forms n-p junction.
10H.According to method described in clause 9H, including from its front-surface side sliced crystal silicon wafer.
11H.A method of manufacturing multiple solar batteries, which comprises
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 silicons of the passivation layer deposition into the groove and on the first surface of crystal silicon wafer On layer；
One or more amorphous silicon layers are deposited on the second surface of crystal silicon wafer, the second surface is located at crystal The opposite side of the first surface of silicon wafer；
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.
12H.According to method described in clause 11H, including forming passivation layer with transparent conductive oxide.
13H.According to 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 method described in clause 11H, it is included in crystal silicon wafer machinery at one or more cutting planes Cutting.
15H.According to 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 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 method described in clause 11H, wherein the first surface of crystal silicon wafer will in solar cell working It is irradiated by light.
18H.According to method described in clause 11H, wherein the second surface of crystal silicon wafer will in solar cell working It is irradiated by light.
19H.A kind of solar panels, comprising:
Multiple superbatteries, each superbattery include the multiple solar batteries of arrangement of being in line, wherein it is adjacent too The end of positive energy battery is overlapped in a manner of covering and is conductively joined to each other, so that solar battery is electrically connected in series.
Wherein each solar battery includes: crystalline silicon substrate；One or more first surface amorphous silicon layers, setting 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, prevent Only there is Carrier recombination in the edge of first surface amorphous silicon layer or the edge of second surface amorphous silicon layer, or both prevent The edge of first surface amorphous silicon layer prevents the edge of second surface amorphous silicon layer from Carrier recombination occur again.
20H.According to solar panels described in clause 19H, wherein the passivation layer includes transparent conductive oxide.
21H.According to 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, comprising:
Greater than or equal to about 250 N number of rectangles or the silicon solar cell of substantial rectangular, the silicon solar cell It is arranged to the superbattery of multiple series connections in two or more parallels, each superbattery includes that arrangement is straight Multiple silicon solar cells, wherein the long side of adjacent silicon solar cell is overlapped and not only conductive but also thermally conductive adhesive is used to pass It is engaged with each other to the property led, the silicon solar cell in the superbattery is electrically connected in series；And
One or more bypass diodes；
The adjacent parallel of every a pair wherein in the solar energy module passes through bypass diode and is electrically connected, the bypass It is joined to diodes conduct the rear surface electric contact in the row to parallel on centrally located solar battery, 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 solar energy module described in clause Z1, wherein the adjacent parallel of every a pair pass through it is at least one other Bypass diode electrical connection, the bypass diode are conductively joined on the solar battery in the row to parallel Rear surface electric contact, and the rear table in the adjacent solar battery being conductively joined in another row to parallel Face electric contact.
Z3.According to solar energy module described in clause Z2, wherein the adjacent parallel of every a pair pass through it is at least one other Bypass diode electrical connection, the bypass diode are conductively joined on the solar battery in the row to parallel Rear surface electric contact, and the rear table in the adjacent solar battery being conductively joined in another row to parallel Face electric contact.
Z4.According to solar energy module described in clause Z1, wherein the not only conductive but also thermally conductive adhesive is in the adjacent sun Engagement can be formed between battery, these are bonded on perpendicular to the thickness on solar battery direction less than or equal to about 50 microns, And perpendicular to the thermal conductivity on solar battery direction greater than or equal to about 1.5W/ (m-K).
Z5.According to 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 solar energy module described in clause Z1, wherein the conductibility engagement between the solar battery being overlapped is Superbattery provides mechanical plasticity, so that reconciliation is parallel to superbattery within the temperature range of about -40 DEG C to about 100 DEG C Thermal expansion mismatch on the direction of row between superbattery and glass front plate makes the thermal expansion mismatch be unlikely to damage solar energy Module.
Z7.The solar energy module according to any one of clause Z1 to Z6, wherein N greater than or equal to about 300, be 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, it is big In or be equal to about 600, greater than or equal to about 650, or greater than or equal to about 700.
Z8.The solar energy module according to any one of clause Z1 to Z7, wherein superbattery electrical connection is to mention 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, comprising:
According to solar energy module described in clause Z1；And
Inverter, the inverter are electrically connected to the solar energy module, and are configured for conversion from the sun The direct current output of energy module is to provide exchange output.
Z10.According to solar energy system described in clause Z9, wherein the inverter lacks DC to DC boost parts.
Z11.According to solar energy system described in clause Z9, wherein the inverter is configured for being higher than minimum value Direct current pressing operation solar energy module, the minimum value are configured to avoid solar battery reverse-biased.
Z12.According to solar energy system described in clause Z11, wherein minimum amount of voltage that depends on temperature.
Z13.According to 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 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.The solar energy system according to 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 ability It will be evident for field technique personnel, and be intended to belong to scope of the appended claims.

Claims (36)

1. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area, the quarter draws draws including laser incising；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects.
2. according to the method described in claim 1, including that laser incising draws quarter line drawing, and then applies electroconductive binder engagement Material.
3. according to the method described in claim 1, further including electroconductive binder grafting material being applied to chip, and then swash Quarter line drawing is drawn in photoetching.
4. according to the method described in claim 3, wherein,
Described apply includes applying uncured electroconductive binder grafting material；And
The laser incising is drawn including avoiding the heat from laser from solidifying uncured electroconductive binder grafting material.
5. according to the method described in claim 4, wherein, it is described avoid include selection laser power and/or carve line drawing with not The distance between cured electroconductive binder grafting material.
6. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
Arrangement includes forming layered structure；
Solidification includes that heat and/or pressure are applied to the layered structure；And
The layered structure includes thermoplastic olefin polymer encapsulant.
7. according to the method described in claim 6, wherein, the layered structure includes:
White backing plate；And
Dark-coloured striped on white backing plate.
8. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, 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 multiple solar battery items.
9. according to the method described in claim 8, further include: using multiple solar battery items as one group of transport, and wherein The arrangement includes that multiple solar battery items are arranged into module.
10. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
The arrangement include will have at least 19 solar battery items arrangements of at least breakdown voltage of 10V to be in line, and And only there is single bypass diode.
11. according to the method described in claim 10, further include one at least 19 solar battery items with Ribbon conductor is formed between the single bypass diode.
12. according to the method for claim 11, wherein the single bypass diode is located at the of the first solar energy module In one terminal box, the second terminal box of first terminal box and the second solar energy module is arranged at pairing.
13. according to the method described in claim 10, further include one at least 19 solar battery items with Ribbon conductor is formed between intelligent switch.
14. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
The overlapping cell strip of the multiple solar battery item about 1mm to 5mm Chong Die with the solar battery item.
15. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
The solar battery item includes the first chamfering.
16. according to the method for claim 15, wherein the overlapping solar battery item of the multiple solar battery item Long side does not include the second chamfering.
17. according to the method for claim 16, wherein the width of the solar battery item is greater than the overlapping solar energy The width of cell strip, so that the solar battery item and the overlapping solar battery item have roughly equal face Product.
18. according to the method for claim 15, wherein the overlapping solar battery item of the multiple solar battery item Long side includes the second chamfering.
19. according to the method for claim 18, wherein the overlapping solar battery item of the multiple solar battery item Long side is Chong Die with including the long side of cell strip of the first chamfering.
20. according to the method for claim 18, wherein the overlapping solar battery of the multiple solar battery item The long side of item is Chong Die with the long side for the cell strip for not including the first chamfering.
21. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects；And
The multiple solar battery item is connect with another multiple solar battery items using interconnection piece.
22. according to the method for claim 21, wherein a part of the interconnection piece is either colored by the covering of dark-coloured film 's.
23. according to the method for claim 21, wherein the multiple solar battery item and another multiple solar energy Cell strip is connected in series.
24. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
Described apply includes printing.
25. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
Described apply includes using masked-deposition.
26. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
The quarter line drawing and electroconductive binder grafting material are located on the surface.
27. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
The segmentation includes that pressure is applied to chip using roller.
28. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
Described provide includes providing metallization pattern for silicon wafer, so that the segmentation generates the metallization figure having along long side The solar battery item of case.
29. according to the method for claim 28, wherein the metallization pattern includes busbar or discrete engagement pad.
30. according to the method for claim 28, wherein described provide includes printing the metallization pattern.
31. according to the method for claim 28, wherein described provide includes that the metallization pattern is electroplated.
32. according to the method for claim 28, wherein the metallization pattern includes being configured to limit the conduction to glue The feature of mixture grafting material sprawling.
33. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material；And
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects, wherein
The long side length of the solar battery item reappears the shape of chip.
34. according to the method for claim 33, wherein the length is 156mm or 125mm.
35. according to the method for claim 33, wherein the length-width ratio between the width and length of the solar battery item Between about 1:2 to about 1:20.
36. a kind of method, comprising:
The silicon wafer for having length is provided；
It carves to draw on silicon and draws line to limit solar-electricity pool area, the quarter draws draws including laser incising；
Apply electroconductive binder grafting material to the surface of silicon wafer；
Along line segmentation silicon wafer is drawn to provide solar battery item, which includes the neighbouring solar battery A part of the electroconductive binder grafting material of the long side arrangement of item；
Multiple solar battery items arrangement is in line, wherein the long side of adjacent solar battery item is overlapped, and is arranged therebetween There is a part of electroconductive binder grafting material, the multiple solar battery item has the solar battery including the first chamfering Item；
Adjacent overlapping solar battery item is engaged with each other and by their series electricals by curing conductive adhesive bond material It connects；And
The multiple solar battery item is connect with another multiple solar battery items using interconnection piece；Wherein,
Described provide includes providing metallization pattern for silicon wafer, so that the segmentation generates the metallization figure having along long side The solar battery item of case；
The quarter line drawing and electroconductive binder grafting material are located on the surface；And
Described apply includes printing or using masked-deposition.
CN201710523237.1A 2014-05-27 2015-05-26 Stacking formula solar cell module Active CN108091705B (en)

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