CN109378350A - A kind of solar battery and its packaging technology - Google Patents

A kind of solar battery and its packaging technology Download PDF

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Publication number
CN109378350A
CN109378350A CN201811476402.3A CN201811476402A CN109378350A CN 109378350 A CN109378350 A CN 109378350A CN 201811476402 A CN201811476402 A CN 201811476402A CN 109378350 A CN109378350 A CN 109378350A
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CN
China
Prior art keywords
line electrode
gate line
solar cell
silicon solar
grid line
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Pending
Application number
CN201811476402.3A
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Chinese (zh)
Inventor
皇韶峰
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JIANGSU SOLARSPACE CO Ltd
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JIANGSU SOLARSPACE CO Ltd
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Publication date
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Priority to CN201811476402.3A priority Critical patent/CN109378350A/en
Publication of CN109378350A publication Critical patent/CN109378350A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red 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
    • H01L31/04Semiconductor devices sensitive to infra-red 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
    • H01L31/042PV modules or arrays of single PV cells
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red 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
    • H01L31/02Details
    • H01L31/0224Electrodes
    • H01L31/022408Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H01L31/022433Particular geometry of the grid contacts
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red 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
    • H01L31/18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/1804Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic System
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/547Monocrystalline silicon PV cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses a kind of solar battery and its packaging technologies, including a kind of solar battery, wherein solar battery includes silicon solar cell and the gate line electrode for being fixedly connected on silicon solar cell surface, the gate line electrode includes main grid line electrode and secondary gate line electrode, the surface of the main grid line electrode and secondary gate line electrode is plated with indium metal layer, the indium metal layer with a thickness of 15-30 microns, the silicon solar cell connects for rectangular plate-like, and silicon solar cell is connected with insulative transparent layer on the surface in addition to main grid line electrode and secondary gate line electrode, the insulative transparent layer with a thickness of 2-15 microns.A kind of solar battery and its packaging technology, the main grid line electrode of silver-colored material and the oxidation rate of secondary gate line electrode can be reduced, make to guarantee to improve the production installation quality of solar battery while conductive efficiency, and can reduce the contact resistance of compound, improves conductive efficiency.

Description

A kind of solar battery and its packaging technology
Technical field
The invention belongs to technical field of solar batteries, and in particular to a kind of solar battery and its packaging technology.
Background technique
Solar battery is a kind of device that solar energy is converted into electric energy based on photovoltaic effect, is one Semiconductor photo diode, when on solar irradiation to photodiode, photodiode will be converted into the luminous energy of the sun Electric energy generates electric current.The solar energy for having bigger output power can be become when many a batteries are together in series or parallel Battery array.Solar battery large, medium and small can develop simultaneously, the big medium-sized power station for arriving gigawatt, it is small to only for a family too Positive energy battery pack, combination is flexible, this is that other power supplys are incomparable.
Solar battery generally comprises silicon solar cell and gate line electrode, and gate line electrode mainly by silver plating and At, during the integral installation of solar battery or use, due to contact of the gate line electrode with air of silver-colored material, from And the oxidation of gate line electrode is resulted in, so that surface is covered a kind of faint yellow or black substance, affects the conduction of gate line electrode Efficiency more seriously reduces the quality of production in installation process.
Summary of the invention
The purpose of the present invention is to provide a kind of solar battery and its packaging technologies, to solve to mention in above-mentioned background technique Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of solar battery, including silicon solar cell Piece and the gate line electrode for being fixedly connected on silicon solar cell surface, the gate line electrode include main grid line electrode and secondary grid line The surface of electrode, the main grid line electrode and secondary gate line electrode is plated with indium metal layer, the indium metal layer with a thickness of 15- 30 microns.
Preferably, the silicon solar cell connects for rectangular plate-like, and silicon solar cell except main grid line electrode and Be connected with insulative transparent layer on surface outside secondary gate line electrode, the insulative transparent layer with a thickness of 2-15 microns.
Preferably, the main grid line electrode and secondary gate line electrode are respectively provided at the upper and lower surfaces of silicon solar cell On, and main grid line electrode and secondary gate line electrode are rectangular strip, are covered on main grid line electrode and secondary gate line electrode surface Indium metal layer be also rectangular structure.
Preferably, the main grid line electrode has two groups in the equal mirror settings of upper and lower surface of silicon solar cell, described Secondary gate line electrode is provided with multiple groups in the upper and lower surface uniform intervals of silicon solar cell, and pair gate line electrode described in multiple groups with Main grid line electrode is connected in the one side vertical interlaced of silicon solar cell.
Preferably, the insulative transparent layer is layer of silica gel or insulating polymer film layer.
A kind of solar battery and its packaging technology, comprising the following steps:
S1, it is die-filling, one group and required main grid line electrode and secondary grid line electricity are pressed on the upper surface of silicon solar cell Extremely compatible grid mould bases, and the bottom surface of the grid mould bases is made to be close to cell piece surface;
S2, coating, the silicon solar cell upper surface side Shang Hesi on the outside of grid mould bases coat insulation transparent material Material, and guarantee the uniform of insulation transparent material coating;
Grid mould bases is removed in S3, demoulding, forms the upper surface of silicon solar cell except the covering of insulation transparent material Grid route;
S4, drying carry out drying and processing to silicon solar cell upper surface and side, make insulative transparent layer and the silicon sun Energy cell piece is stiched together admittedly;
S5, it is preliminary to be electroplated, leading as main grid line electrode and secondary gate line electrode is plated on gridline road using galvanoplastic Electric material forms solar battery gate line electrode, and the upper surface of the gate line electrode bottom face and silicon solar cell is closely Setting;
S6 is electroplated again, and upper one layer of indium metal is electroplated again using galvanoplastic on main grid line electrode and secondary gate line electrode Layer makes indium metal layer covering main grid line electrode and secondary grid line motor, and the two sides bottom end of indium metal layer is located on insulative transparent layer;
S7 is completed, and is repeated the above steps S1-S6 at the back side of silicon solar cell, is made silicon solar cell Upper and lower surface complete coating and plating, form the solar battery of completion.
Preferably, in step S2, insulation transparent material is silica gel or insulating polymer material, preliminary to be electroplated in step S5 Material be metallic silver.
Technical effect and advantage of the invention: a kind of solar battery and its packaging technology, by main grid line electrode With one layer of indium metal layer of electroplating surface of secondary gate line electrode, indium metal layer passes through electric plating method for main grid line electrode and secondary grid line Electrode covering, both ensure that the leakproofness of main grid line electrode and secondary gate line electrode, thus reduce silver-colored material main grid line electrode and The oxidation rate of secondary gate line electrode ensure that main grid line electrode and secondary grid line motor pole are either whole in installation solar battery Still in use, it can guarantee conductive efficiency, not only improve the production installation quality of solar battery, but also can Silicon solar cell service efficiency is enough improved, and indium metal and silver can also be formed the mixing of indium metal by indium plating metal layer Object further reduced the contact resistance of compound, improve conductive efficiency.
Detailed description of the invention
Fig. 1 is solar battery main view of the invention;
Fig. 2 is solar battery top view of the invention.
In figure: 1 silicon solar cell, 2 insulative transparent layers, 3 secondary gate line electrodes, 4 main grid line electrodes, 5 indium metal layers.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of solar battery as shown in Figs. 1-2, including silicon solar cell 1 be fixedly connected Gate line electrode on 1 surface of silicon solar cell, the gate line electrode include main grid line electrode 4 and secondary gate line electrode 3, described The surface of main grid line electrode 4 and secondary gate line electrode 3 is plated with indium metal layer 5, the indium metal layer 5 it is micro- with a thickness of 15-30 Rice.
Specifically, the silicon solar cell 1 connects for rectangular plate-like, and silicon solar cell 1 removes main grid line electrode 4 Be connected with insulative transparent layer 2 on the surface outside secondary gate line electrode 3, the insulative transparent layer 2 with a thickness of 2-15 microns.
Specifically, the main grid line electrode 4 and secondary gate line electrode 3 are respectively provided at two table up and down of silicon solar cell 1 On face, and main grid line electrode 4 and secondary gate line electrode 3 are rectangular strip, are covered on main grid line electrode 4 and secondary gate line electrode The indium metal layer 5 on 3 surfaces is also rectangular structure.
Specifically, the main grid line electrode 4 has two groups in the equal mirror settings of upper and lower surface of silicon solar cell 1, institute The upper and lower surface uniform intervals that secondary gate line electrode 3 is stated in silicon solar cell 1 are provided with multiple groups, and the electricity of pair grid line described in multiple groups One side vertical interlaced of the pole 3 with main grid line electrode 4 in silicon solar cell 1 is connected to.
Specifically, the insulative transparent layer 2 is layer of silica gel or insulating polymer film layer.
A kind of solar battery and its packaging technology, comprising the following steps:
S1, it is die-filling, one group and required main grid line electrode 4 and secondary grid line are pressed on the upper surface of silicon solar cell 1 The compatible grid mould bases of electrode 3, and the bottom surface of the grid mould bases is made to be close to cell piece surface;
S2, coating, the 1 upper surface side Shang Hesi of silicon solar cell on the outside of grid mould bases coat insulation transparent material Material, and guarantee the uniform of insulation transparent material coating;
Grid mould bases is removed in S3, demoulding, forms the upper surface of silicon solar cell 1 except insulation transparent material covers Grid route;
S4, drying carry out drying and processing to 1 upper surface of silicon solar cell and side, make insulative transparent layer 2 and silicon too Positive energy cell piece 1 is stiched together admittedly;
S5, it is preliminary to be electroplated, it is plated on gridline road using galvanoplastic as main grid line electrode 4 and secondary gate line electrode 3 Conductive material forms solar battery gate line electrode, and solar battery gate line electrode bottom face and silicon solar cell 1 Upper surface is closely arranged;
S6 is electroplated again, plates one layer of indium metal layer 5 using galvanoplastic on main grid line electrode 4 and secondary gate line electrode 3, Indium metal layer 5 is set to cover main grid line electrode 4 and secondary grid line motor, and the two sides bottom end of indium metal layer 5 is located at insulative transparent layer 2 On;
S7 is completed, and is repeated the above steps S1-S6 at the back side of silicon solar cell 1, is made silicon solar cell 1 upper and lower surface completes coating and plating, forms the solar battery of completion.
Specifically, in step S2, insulation transparent material is silica gel or insulating polymer material, preliminary to be electroplated in step S5 Material be metallic silver.
Specifically, a kind of solar battery and its packaging technology, in an assembling process, first, in accordance with die-filling coating Insulative transparent layer 2 is covered on the surface of silicon solar cell 1 by step, and will not be to subsequent main grid line electrode 4 and secondary grid The plating of line electrode 3 has an impact, then by being electroplated twice, and first plating is by metallic silver plating at main grid line electrode 4 and secondary grid Indium metal layer 5 is being electroplated the surface for being covered on main grid line electrode 4 and secondary gate line electrode 3, is forming sealing, then again by line electrode 3 The another side of silicon solar cell 1 is repeated into step, completes an entirety circulation.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features, All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims (7)

1. a kind of solar battery including silicon solar cell (1) and is fixedly connected on silicon solar cell (1) surface Gate line electrode, it is characterised in that: the gate line electrode includes main grid line electrode (4) and secondary gate line electrode (3), the main gate line electricity Pole (4) and the surface of secondary gate line electrode (3) are plated with indium metal layer (5), the indium metal layer (5) it is micro- with a thickness of 15-30 Rice.
2. a kind of solar battery according to claim 1, it is characterised in that: the silicon solar cell (1) is square Shape plate connects, and silicon solar cell (1) is connected with absolutely on the surface in addition to main grid line electrode (4) and secondary gate line electrode (3) Edge hyaline layer (2), the insulative transparent layer (2) with a thickness of 2-15 microns.
3. a kind of solar battery according to claim 1, it is characterised in that: the main grid line electrode (4) and secondary grid line Electrode (3) is respectively provided on the upper and lower surfaces of silicon solar cell (1), and main grid line electrode (4) and secondary gate line electrode (3) It is rectangular strip, it is also rectangular for being covered on the indium metal layer (5) of main grid line electrode (4) and secondary gate line electrode (3) surface Structure.
4. a kind of solar battery according to claim 1, it is characterised in that: the main grid line electrode (4) is in the silicon sun The equal mirror settings of upper and lower surface of energy cell piece (1) have two groups, and the pair gate line electrode (3) is in silicon solar cell (1) Upper and lower surface uniform intervals are provided with multiple groups, and pair gate line electrode (3) described in multiple groups and main grid line electrode (4) are in silicon solar electricity The one side vertical interlaced of pond piece (1) is connected to.
5. a kind of solar battery according to claim 2, it is characterised in that: the insulative transparent layer (2) is layer of silica gel Or insulating polymer film layer.
6. a kind of solar battery according to claim 1-5 and its packaging technology, it is characterised in that: including with Lower step:
S1, it is die-filling, one group and required main grid line electrode (4) and secondary grid line are pressed on the upper surface of silicon solar cell (1) The compatible grid mould bases of electrode (3), and the bottom surface of the grid mould bases is made to be close to cell piece surface;
S2, coating, silicon solar cell (1) upper surface side Shang Hesi on the outside of grid mould bases coat insulation transparent material Material, and guarantee the uniform of insulation transparent material coating;
Grid mould bases is removed in S3, demoulding, forms the upper surface of silicon solar cell (1) except the covering of insulation transparent material Grid route;
S4, drying carry out drying and processing to silicon solar cell (1) upper surface and side, make insulative transparent layer (2) and silicon too Positive energy cell piece (1) is stiched together admittedly;
S5, it is preliminary to be electroplated, it is plated on gridline road using galvanoplastic as main grid line electrode (4) and pair gate line electrode (3) Conductive material forms solar battery gate line electrode, and solar battery gate line electrode bottom face and silicon solar cell (1) Upper surface be closely arranged;
S6 is electroplated again, plates one layer of indium metal layer using galvanoplastic on main grid line electrode (4) and secondary gate line electrode (3) (5), make indium metal layer (5) covering main grid line electrode (4) and secondary grid line motor, and the two sides bottom end of indium metal layer (5) is located at absolutely On edge hyaline layer (2);
S7 is completed, and is repeated the above steps S1-S6 at the back side of silicon solar cell (1), is made silicon solar cell (1) upper and lower surface completes coating and plating, forms the solar battery of completion.
7. a kind of solar battery according to claim 6 and its packaging technology, it is characterised in that: in step S2, insulation Transparent material is silica gel or insulating polymer material, and in step S5, the material being tentatively electroplated is metallic silver.
CN201811476402.3A 2018-12-03 2018-12-03 A kind of solar battery and its packaging technology Pending CN109378350A (en)

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Application Number Priority Date Filing Date Title
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Publications (1)

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CN109378350A true CN109378350A (en) 2019-02-22

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060060238A1 (en) * 2004-02-05 2006-03-23 Advent Solar, Inc. Process and fabrication methods for emitter wrap through back contact solar cells
CN101834230A (en) * 2010-04-30 2010-09-15 中山大学 Method for preparing colorful film for protecting solar cell thin grid line metal electrode by adopting mask
CN102800763A (en) * 2012-09-07 2012-11-28 泉州市博泰半导体科技有限公司 Solar cell and method for producing grid line electrode of solar cell
CN206098402U (en) * 2016-07-27 2017-04-12 福建金石能源有限公司 Heterojunction solar cell and module thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060060238A1 (en) * 2004-02-05 2006-03-23 Advent Solar, Inc. Process and fabrication methods for emitter wrap through back contact solar cells
CN101834230A (en) * 2010-04-30 2010-09-15 中山大学 Method for preparing colorful film for protecting solar cell thin grid line metal electrode by adopting mask
CN102800763A (en) * 2012-09-07 2012-11-28 泉州市博泰半导体科技有限公司 Solar cell and method for producing grid line electrode of solar cell
CN206098402U (en) * 2016-07-27 2017-04-12 福建金石能源有限公司 Heterojunction solar cell and module thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《矿产资源工业要求手册》编委会编: "《矿产资源工业要求手册 2014修订版》", 31 January 2014, 地质出版社 *

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Application publication date: 20190222

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