CN103560154A - Back-contact solar cell assembly - Google Patents
Back-contact solar cell assembly Download PDFInfo
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- CN103560154A CN103560154A CN201310565600.8A CN201310565600A CN103560154A CN 103560154 A CN103560154 A CN 103560154A CN 201310565600 A CN201310565600 A CN 201310565600A CN 103560154 A CN103560154 A CN 103560154A
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- solar cell
- layer
- cell assembly
- contact solar
- back contact
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- 239000004020 conductor Substances 0.000 claims abstract description 55
- 239000011521 glass Substances 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 239000011888 foil Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 241000446313 Lamella Species 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 210000004276 hyalin Anatomy 0.000 claims description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229920000554 ionomer Polymers 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000005341 toughened glass Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 4
- 239000010408 film Substances 0.000 description 20
- 230000002950 deficient Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 229920002313 fluoropolymer Polymers 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- 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
- H01L31/0516—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 specially adapted for interconnection of back-contact solar cells
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a back-contact solar cell assembly which comprises an overlaid transparent layer (10), a first packing layer (20), a battery piece layer (30), a second packing layer (40) and a back plate layer (60). A first conductor and a second conductor are arranged between the back plate layer (60) and the second packing layer (40). The back-contact solar cell assembly further comprises a first hole channel and a second hole channel which are both formed in the battery piece layer (30) and the second packing layer (40). The first hole channel is communicated with a positive electrode of a battery piece of the battery piece layer (30) and the first conductor, the second hole channel is communicated with a negative electrode of the battery piece of the battery piece layer (30), the first hole channel and the second hole channel are filled with conductive slurry (50), and the back plate layer (6) is made of glass. The technical scheme of the back-contact solar cell assembly effectively solves the problems that a back-contact solar cell assembly in the prior art is complex in manufacturing process and high in rejection rate.
Description
Technical field
The present invention relates to technical field of solar, in particular to a kind of back contact solar cell assembly.
Background technology
Along with the exhaustion day by day of the non-renewable resources such as oil gas, the mankind more and more pay attention to for the development and application of regenerative resource.Solar cell is as a kind of device of electric energy that solar light is converted into by photovoltaic effect, and it has environmental protection, the feature such as inexhaustible.
The development of heliotechnics at present and application are maked rapid progress.Solar cell generally can be divided into crystal silicon solar energy battery, thin-film solar cells, DSSC and organic solar batteries.Through technological progress and marketing comparative maturity for many years, current crystal silicon solar energy battery is dominate in field of solar energy progressively.
For improving the photoelectric conversion efficiency of crystal silicon solar energy battery, researcher's expectation reduces the shielded area of solar cell sensitive surface incident ray as far as possible.Back contact solar cell be a kind of by laser in cell piece perforate to remove positive main grid electrode, make electrode extend through rear surface of solar cell, then utilize the metal forming of conductive backings by the solar cell that the positive electrode of all cell pieces connects, all negative electrodes are connected.Backboard is the important component part of back contact solar cell assembly, conventionally need on the back veneer material of high reliability, prepare high-precision conducting channel.Backboard of the prior art is made by fluoropolymer, also needs toward type metal conductive layer on backboard.Like this, on the one hand because fluorinated polymer material resistance to elevated temperatures is not good, on the other hand again because the tensile strength of fluorinated polymer material film is limited, just caused the high problem of complex manufacturing technology, percent defective of back contact solar cell assembly.
Summary of the invention
The present invention aims to provide a kind of back contact solar cell assembly, to solve the back contact solar cell establishment of component complex process of prior art, the problem that percent defective is high.
To achieve these goals, the invention provides a kind of back contact solar cell assembly, comprise stacked hyaline layer, the first encapsulated layer, battery lamella, the second encapsulated layer and backsheet layer, wherein, between backsheet layer and the second encapsulated layer, be provided with the first electric conductor and the second electric conductor, back contact solar cell assembly also comprises the first duct and the second duct, all be arranged on battery lamella and the second encapsulated layer, positive pole and first electric conductor of the cell piece in the first hole link battery lamella, negative pole and second electric conductor of the cell piece in the second hole link battery lamella, in the first duct and the second duct, be filled with electrocondution slurry, the material of backsheet layer is glass.
Further, the first conductor and the second electric conductor are conductive metal foil.
Further, the setting at the first conductor and the second electric conductor interval on backsheet layer, is filled with dielectric between the first conductor and the second electric conductor.
Further, the first conductor and the second electric conductor thickness are all in the scope of 10 μ m to 500 μ m.
Further, the first conductor and the second electric conductor are the copper film of thickness within the scope of 25 μ m to 35 μ m, and dielectric is the silica gel of thickness within the scope of 25 μ m to 35 μ m.
Further, conductive metal foil comprises multilayer.
Further, conductive metal foil comprises stacked bottom and top layer, bottom is the aluminium film of thickness within the scope of 35 μ m to 45 μ m, top layer is the silverskin of thickness within the scope of 5 μ m to 15 μ m, dielectric is the silica gel of thickness within the scope of 45 μ m to 55 μ m, and dielectric thickness is identical with the thickness of conductive metal foil.
Further, conductive metal foil comprises at least one deck silver metal film, aluminum metal film, chromium metallic film, platinum film, molybdenum film or copper metal film.
Further, hyaline layer and backsheet layer material are toughened glass.
Further, the material of the first encapsulated layer and/or the second encapsulated layer is one of in polyethylene-hexenoic acid ethyl ester, polyvinyl butyral resin, polyurethane elastomer, polyolefin and polyethylene-acetic acid esters ionomer.
Apply technical scheme of the present invention, the material that is provided with the backsheet layer of electric conductor is glass.Because glass has good heat-resisting, electrochemical corrosion resistant and high yield strength, printing or weld the first electric conductor and the second electric conductor will be more reliable on the backsheet layer that is glass in material, also can make the processing technology of back contact solar cell assembly become simply, more reduce percent defective.Meanwhile, the backsheet layer hardness of glass material is also larger, guarantees the dependability of back contact solar cell assembly.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows according to the structural representation of the embodiment of back contact solar cell assembly of the present invention; And
Fig. 2 shows the partial structurtes schematic diagram of the back contact solar cell assembly of Fig. 1.
Above-mentioned accompanying drawing comprises the following drawings mark:
10, hyaline layer; 20, the first encapsulated layer; 30, battery lamella; 40, the second encapsulated layer; 50, electrocondution slurry; 60, backsheet layer; 61, conductive metal foil; 62, dielectric.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As shown in Figure 1, the back contact solar cell assembly of the present embodiment comprises stacked hyaline layer 10, the first encapsulated layer 20, battery lamella 30, the second encapsulated layer 40 and backsheet layer 60.Wherein, between backsheet layer 60 and the second encapsulated layer 40, be provided with the first electric conductor and the second electric conductor.Back contact solar cell assembly also comprises the first duct and the second duct, and the first duct and the second duct are all arranged on battery lamella 30 and the second encapsulated layer 40.Wherein, positive pole and first electric conductor of the cell piece in the first hole link battery lamella 30, negative pole and second electric conductor of the cell piece in the second hole link battery lamella 30.In the first duct and the second duct, be filled with electrocondution slurry 50, the material of backsheet layer 60 is glass.
The technical scheme of application the present embodiment, the material that is provided with the backsheet layer 60 of electric conductor is elected glass as.Because glass has good heat-resisting, electrochemical corrosion resistant and high yield strength, printing or weld the first electric conductor and the second electric conductor will be more reliable on the backsheet layer 60 that is glass in material, also can make the processing technology of back contact solar cell assembly become simply, more reduce percent defective.Meanwhile, backsheet layer 60 hardness of glass material are also larger, guarantee the dependability of back contact solar cell assembly.
As shown in Figure 2, in the present embodiment, the first conductor and the second electric conductor are conductive metal foil 61.The setting at the first conductor and the second electric conductor interval on backsheet layer 60, is filled with dielectric 62 between the first conductor and the second electric conductor.Like this, the filling of dielectric 62, well avoided with anodal the first electric conductor being connected of cell piece and the second electric conductor of being connected with cell piece negative pole between alter electricity.
Preferably, the first conductor and the second electric conductor thickness are in the scope of 10 μ m to 500 μ m.The first conductor and the second electric conductor be thickness all at the copper film within the scope of 25 μ m to 35 μ m, dielectric 62 is the silica gel within the scope of thickness 25 μ m to 35 μ m.Preferably, the thickness of copper film is 30 μ m, and the thickness of silica gel is 30 μ m.
In unshowned in the drawings embodiment, conductive metal foil 61 comprises multilayer.Preferably conductive metal foil 61 comprises stacked bottom and top layer.Wherein, bottom is the aluminium film of thickness within the scope of 35 μ m to 45 μ m, and top layer is the silverskin of thickness within the scope of 5 μ m to 15 μ m.Dielectric 62 is the silica gel of thickness within the scope of 35 μ m to 65 μ m, and the thickness of dielectric 62 is identical with the thickness of conductive metal foil 61.Further preferably, aluminium film thickness is 40 μ m, and silver film thickness is 10 μ m, and silica gel thickness is 50 μ m.Like this, the first electric conductor and the second electric conductor, meeting under requirement cheaply, also can guarantee that the contact of electrocondution slurry and conductivity are all relatively good.Conductive metal foil 61 comprises at least one deck silver metal film, aluminum metal film, chromium metallic film, platinum film, molybdenum film or copper metal film.
In the present embodiment, hyaline layer 10 is toughened glass with backsheet layer 60 materials.Can well guarantee the intensity of back contact solar cell assembly like this.The first encapsulated layer 20 and or the material of the second encapsulated layer 40 be one of in polyethylene-hexenoic acid ethyl ester, polyvinyl butyral resin, polyurethane elastomer, polyolefin and polyethylene-acetic acid esters ionomer.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a back contact solar cell assembly, comprise stacked hyaline layer (10), the first encapsulated layer (20), battery lamella (30), the second encapsulated layer (40) and backsheet layer (60), wherein, between described backsheet layer (60) and described the second encapsulated layer (40), be provided with the first electric conductor and the second electric conductor, described back contact solar cell assembly also comprises the first duct and the second duct, all be arranged on described battery lamella (30) and described the second encapsulated layer (40), the positive pole of the cell piece described in described the first hole link in battery lamella (30) and described the first electric conductor, the negative pole of the cell piece described in described the second hole link in battery lamella (30) and described the second electric conductor, in described the first duct and described the second duct, be filled with electrocondution slurry (50), it is characterized in that, the material of described backsheet layer (60) is glass.
2. back contact solar cell assembly according to claim 1, described the first conductor and described the second electric conductor are conductive metal foil (61).
3. back contact solar cell assembly according to claim 2, it is characterized in that, described the first conductor and described the second electric conductor be in the setting at the upper interval of described backsheet layer (60), between described the first conductor and described the second electric conductor, is filled with dielectric (62).
4. back contact solar cell assembly according to claim 3, is characterized in that, described the first conductor and described the second electric conductor thickness are all in the scope of 10 μ m to 500 μ m.
5. back contact solar cell assembly according to claim 3, it is characterized in that, described the first conductor and described the second electric conductor are the copper film of thickness within the scope of 25 μ m to 35 μ m, and described dielectric (62) is the silica gel of thickness within the scope of 25 μ m to 35 μ m.
6. back contact solar cell assembly according to claim 3, is characterized in that, described conductive metal foil (61) comprises multilayer.
7. back contact solar cell assembly according to claim 6, it is characterized in that, described conductive metal foil (61) comprises stacked bottom and top layer, described bottom is the aluminium film of thickness within the scope of 35 μ m to 45 μ m, described top layer is the silverskin of thickness within the scope of 5 μ m to 15 μ m, described dielectric (62) is the silica gel of thickness within the scope of 45 μ m to 55 μ m, and the thickness of described dielectric (62) is identical with the thickness of described conductive metal foil (61).
8. back contact solar cell assembly according to claim 6, is characterized in that, described conductive metal foil (61) comprises at least one deck silver metal film, aluminum metal film, chromium metallic film, platinum film, molybdenum film or copper metal film.
9. back contact solar cell assembly according to claim 1, is characterized in that, described hyaline layer (10) is toughened glass with described backsheet layer (60) material.
10. back contact solar cell assembly according to claim 1, it is characterized in that, the material of described the first encapsulated layer (20) and/or described the second encapsulated layer (40) is one of in polyethylene-hexenoic acid ethyl ester, polyvinyl butyral resin, polyurethane elastomer, polyolefin and polyethylene-acetic acid esters ionomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310565600.8A CN103560154A (en) | 2013-11-14 | 2013-11-14 | Back-contact solar cell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310565600.8A CN103560154A (en) | 2013-11-14 | 2013-11-14 | Back-contact solar cell assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103560154A true CN103560154A (en) | 2014-02-05 |
Family
ID=50014361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310565600.8A Pending CN103560154A (en) | 2013-11-14 | 2013-11-14 | Back-contact solar cell assembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN103560154A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064608A (en) * | 2014-05-28 | 2014-09-24 | 晶澳（扬州）太阳能科技有限公司 | Main grid-free back-contact solar cell module and preparation method for same |
| CN105355751A (en) * | 2015-10-16 | 2016-02-24 | 英利集团有限公司 | MWT solar cell and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217095A (en) * | 2008-09-05 | 2011-10-12 | 索兰太阳能控股有限公司 | Method of monolithic photo-voltaic module assembly |
| CN103236448A (en) * | 2013-05-02 | 2013-08-07 | 英利能源（中国）有限公司 | Back contact battery photovoltaic assembly and production method thereof |
| WO2013146414A1 (en) * | 2012-03-30 | 2013-10-03 | 凸版印刷株式会社 | Back contact solar cell module |
| CN103346202A (en) * | 2013-05-30 | 2013-10-09 | 南京日托光伏科技有限公司 | Solar cell module based on glass conductive backboard and manufacturing method of solar cell module |
-
2013
- 2013-11-14 CN CN201310565600.8A patent/CN103560154A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217095A (en) * | 2008-09-05 | 2011-10-12 | 索兰太阳能控股有限公司 | Method of monolithic photo-voltaic module assembly |
| WO2013146414A1 (en) * | 2012-03-30 | 2013-10-03 | 凸版印刷株式会社 | Back contact solar cell module |
| CN103236448A (en) * | 2013-05-02 | 2013-08-07 | 英利能源（中国）有限公司 | Back contact battery photovoltaic assembly and production method thereof |
| CN103346202A (en) * | 2013-05-30 | 2013-10-09 | 南京日托光伏科技有限公司 | Solar cell module based on glass conductive backboard and manufacturing method of solar cell module |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064608A (en) * | 2014-05-28 | 2014-09-24 | 晶澳（扬州）太阳能科技有限公司 | Main grid-free back-contact solar cell module and preparation method for same |
| CN104064608B (en) * | 2014-05-28 | 2016-08-24 | 晶澳（扬州）太阳能科技有限公司 | A kind of without main grid back contact solar cell assembly and preparation method thereof |
| CN105355751A (en) * | 2015-10-16 | 2016-02-24 | 英利集团有限公司 | MWT solar cell and preparation method thereof |
| CN105355751B (en) * | 2015-10-16 | 2018-09-07 | 英利集团有限公司 | MWT solar cells and preparation method thereof |
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Effective date of registration: 20160216 Address after: 215300, No. 108, Qianjin Middle Road, Yushan Town, Jiangsu, Kunshan Applicant after: Ni Jianxiong Address before: 071051 Chaoyang North Street, Hebei, Baoding, No. 3399 Applicant before: Yingli Group Ltd. |
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Application publication date: 20140205 |
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