CN201616442U - Back panel of solar battery - Google Patents
Back panel of solar battery Download PDFInfo
- Publication number
- CN201616442U CN201616442U CN 201020102542 CN201020102542U CN201616442U CN 201616442 U CN201616442 U CN 201616442U CN 201020102542 CN201020102542 CN 201020102542 CN 201020102542 U CN201020102542 U CN 201020102542U CN 201616442 U CN201616442 U CN 201616442U
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- solar cell
- tack coat
- back panel
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- 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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Abstract
The utility model relates to a back panel of a solar battery, which comprises a weather-proof layer, a first bonding layer, an aluminium foil layer, a second bonding layer, a structure enhancement layer, a third bonding layer and an ethylene-vinyl acetate layer connected sequentially, wherein the thickness of the weather-proof layer ranges from 4 to 40Mum. The utility model has a simple structure; when in use, the back panel can be directly pressed in with cell or glass of deposited cell layer, and additional ethylene-vinyl acetate cellophane does not need to be served as connecting layer for bonding the back panel and the cell or the glass of deposited cell layer, thereby simplifying the manufacture procedures and reducing manufacturing cost; additionally, the aluminium foil layer is provided, so that the hydraulic permeability of the back panel is extremely low. The back panel is particularly suitable for the encapsulation of thin-film solar cell, and has great significance in the development of solar energy industry.
Description
Technical field
The utility model relates to technical field of solar batteries, particularly a kind of solar cell backboard.
Background technology
Nowadays, solar cell by a large amount of uses in each technical field, relatively the back board structure of solar cell commonly used has the TPT structure at present, and wherein, T refers to the Tedlar film of E.I.Du Pont Company, composition is polyvinyl fluoride (PVF), it mainly acts on is weather-proof, and P refers to PETG (PET) film, therefore, the structure of TPT backboard promptly refers to PVF/PET/PVF, and bonds mutually by suitable glue between three-layer thin-film.
Yet the PVF film has only du pont company production in the whole world, price height, supply monopolization.Therefore, in order to save cost, can substitute by the weaker plastic film of weatherability towards the PVF of solar battery sheet layer.Given this, the backboard of TPE structure has been invented by the Madico company of the U.S., and wherein E refers to ethylene-vinyl acetate resin, is called for short EVA, and therefore, the structure of TPE backboard promptly refers to PVF/PET/EVA.In addition, the backboard that 3M company produces uses THV (hexafluoropropylene (HFP)/tetrafluoroethylene (TFE)-vinylidene) film to be weathering layer, and therefore, the structure of its backboard is THV/PET/EVA.
In the prior art, more than in two kinds of backboards the vinyl acetate content (VA) of EVA all lower, and do not contain crosslinking agent, therefore, when this type of backboard is attached in the solar module by laminating technology, still need to use the EVA glued membrane that contains crosslinking agent as transition zone, thereby make the production process complexity of backboard, production cost improves.
The utility model content
In order to overcome the shortcoming that exists in the above-mentioned prior art, the utility model aims to provide a kind of novel solar cell backboard, to realize in use easy production process, the purpose that reduces production costs.
A kind of solar cell backboard described in the utility model comprises the weathering layer, first tack coat, aluminium foil layer, second tack coat, structure enhancement layer, the 3rd tack coat and the ethene-vinyl acetate layer that connect successively.
In above-mentioned solar cell backboard, the material of described weathering layer is the fluoro-containing plastic alloy.
In above-mentioned solar cell backboard, the thickness range of described weathering layer is 4～40 μ m.
In above-mentioned solar cell backboard, described aluminium foil layer is metal aluminum foil or the pet film that is coated with aluminium lamination.
In above-mentioned solar cell backboard, the thickness range of described metal aluminum foil is 5～100 μ m; The described thickness range that is coated with the pet film of aluminium lamination is 5～100 μ m.
In above-mentioned solar cell backboard, described first transition zone, second transition zone and the 3rd transition zone are polyurethane glue-line or acrylate glue-line or epoxy adhesive layer.
In above-mentioned solar cell backboard, the thickness range of described first tack coat, second tack coat and the 3rd tack coat is 1～30 μ m.
In above-mentioned solar cell backboard, described structure enhancement layer is the PETG layer.
In above-mentioned solar cell backboard, the thickness range of described structure enhancement layer is 40～400 μ m.
In above-mentioned solar cell backboard, the thickness range of described ethene-vinyl acetate layer is 100～1000 μ m.
Owing to adopted above-mentioned technical solution, the utility model is by being provided with an ethene-vinyl acetate layer, promptly contain the material of the EVA glued membrane of crosslinking agent as bonding backboard and battery sheet, battery sheet and glass, realized in the manufacturing of solar module, need not add the EVA glued membrane in addition as the adhesive layer purpose between the glass of bonding backboard and battery sheet or backboard and deposition battery layers; And owing to contain crosslinking agent in the EVA layer, under the high temperature of lamination, crosslinking agent reaction is cross-linked with each other the EVA molecule and becomes thermosetting resin, therefore, the EVA fusion once more after crosslinked, and and backboard, glass, battery sheet higher cohesive force is arranged.When producing crystal silicon cell, backboard described in the utility model directly can be covered on the battery sheet, enter laminating machine then and be pressed into assembly; If the production hull cell, then the glass after itself and the deposition battery layers directly can be pressed into assembly.In addition, because the thin-film solar cells of some kind need be used backboard, but because hull cell is very responsive to moisture, therefore, the utility model also is provided with an aluminium foil layer simultaneously, makes rate of perviousness of the present utility model almost nil; And this aluminium foil layer under some less demanding situation, also can reduce the rate of perviousness of backboard by the mode of aluminizing on pet film except using metal aluminum foil.To sum up, the utility model function admirable meets the requirement to solar cell backboard, and in use easy production process, and the solar cell industry is had very great significance.
Description of drawings
Fig. 1 is the structural representation of a kind of solar cell backboard of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is elaborated.
As shown in Figure 1, the utility model, promptly a kind of solar cell backboard comprises the weathering layer 1, first tack coat 2, aluminium foil layer 3, second tack coat 4, structure enhancement layer 5, the 3rd tack coat 6 and the ethene-vinyl acetate layer 7 that connect successively, wherein:
The material of weathering layer 1 is the fluoro-containing plastic alloy, be fluoro-containing plastic and pigment, other plastics, the mixture of auxiliary agent (or being called plastic alloy), wherein, fluoro-containing plastic be molecular backbone be PVF (CHF-CH2-), the vinylidene segment (CF2-CH2-), the ETFE segment (CH2-CH2-CF2-CF2-), chlorotrifluoroethylene segment (CF2-C (F) Cl-), tetrafluoroethene segment (the copolymer CF2-CF2-) or in the homopolymers that forms of a kind of segment self-polymerization in the hexafluoropropylene segment (CF2-CF (CF2)-) or the above-mentioned segment after the mutual polymerization of segment of two or more (comprising two kinds), or the copolymer that aggregates into of these fluorine-containing groupses and other alkene segment, or the two or more mixture that contains the fluoro-containing plastic of above-mentioned fluorine-containing groups; Pigment can be white, black, other color or not need that other plastics and auxiliary agent can add also and can not add on demand; The thickness range of weathering layer 1 is 4～40 μ m.
The thickness range of ethene-vinyl acetate layer 7 is 100～1000 μ m.This layer thickness is 400 μ m in this specific embodiment.
In sum, the utility model novel structure, in use can be directly and battery sheet or deposited the direct pressing of glass of battery layers, no longer need other ethene-vinyl acetate glued membrane as bonding backboard and battery sheet or deposited the articulamentum of the glass of battery layers, simplify production process, reduced production cost.In addition, owing to contain aluminium foil layer,, be particularly suitable for the encapsulation of thin film solar cell, the development of solar energy industry is had very important significance so permeability rate of the present utility model is extremely low.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection range of the present utility model.
Claims (10)
1. a solar cell backboard is characterized in that, described backboard comprises weathering layer, first tack coat, aluminium foil layer, second tack coat, structure enhancement layer, the 3rd tack coat and the ethene-vinyl acetate layer that connects successively.
2. solar cell backboard according to claim 1 is characterized in that, the material of described weathering layer is the fluoro-containing plastic alloy.
3. solar cell backboard according to claim 1 and 2 is characterized in that, the thickness range of described weathering layer is 4～40 μ m.
4. solar cell backboard according to claim 1 is characterized in that, described aluminium foil layer is metal aluminum foil or the pet film that is coated with aluminium lamination.
5. solar cell backboard according to claim 4 is characterized in that, the thickness range of described metal aluminum foil is 5～100 μ m; The described thickness range that is coated with the pet film of aluminium lamination is 5～100 μ m.
6. solar cell backboard according to claim 1 is characterized in that, described first tack coat, second tack coat and the 3rd tack coat are polyurethane glue-line or acrylate glue-line or epoxy adhesive layer.
7. according to claim 1 or 6 described solar cell backboards, it is characterized in that the thickness range of described first tack coat, second tack coat and the 3rd tack coat is 1～30 μ m.
8. solar cell backboard according to claim 1 is characterized in that, described structure enhancement layer is the PETG layer.
9. according to claim 1 or 8 described solar cell backboards, it is characterized in that the thickness range of described structure enhancement layer is 40～400 μ m.
10. solar cell backboard according to claim 1 is characterized in that, the thickness range of described ethene-vinyl acetate layer is 100～1000 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020102542 CN201616442U (en) | 2010-01-27 | 2010-01-27 | Back panel of solar battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020102542 CN201616442U (en) | 2010-01-27 | 2010-01-27 | Back panel of solar battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616442U true CN201616442U (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020102542 Expired - Fee Related CN201616442U (en) | 2010-01-27 | 2010-01-27 | Back panel of solar battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616442U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555377A (en) * | 2010-12-31 | 2012-07-11 | 苏州中来光伏新材股份有限公司 | EVA (Ethylene vinyl acetate) adhesive integrated solar cell back film and processing technology |
| CN102555370A (en) * | 2010-12-31 | 2012-07-11 | 苏州中来光伏新材股份有限公司 | Non-fluorinated high-weather-proof high-cohesiveness solar cell back membrane and processing technology |
| CN103123945A (en) * | 2011-11-21 | 2013-05-29 | 杜邦太阳能有限公司 | Back panel and thin film solar cell |
| CN103733724A (en) * | 2011-08-04 | 2014-04-16 | 3M创新有限公司 | Edge protected barrier assemblies |
| CN104425640A (en) * | 2013-08-30 | 2015-03-18 | 东莞南玻光伏科技有限公司 | Photovoltaic module |
| CN104900740A (en) * | 2015-05-11 | 2015-09-09 | 保定市易通光伏科技有限公司 | Photovoltaic backplane, manufacture method thereof and photovoltaic module |
| US9614113B2 (en) | 2011-08-04 | 2017-04-04 | 3M Innovative Properties Company | Edge protected barrier assemblies |
-
2010
- 2010-01-27 CN CN 201020102542 patent/CN201616442U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555377A (en) * | 2010-12-31 | 2012-07-11 | 苏州中来光伏新材股份有限公司 | EVA (Ethylene vinyl acetate) adhesive integrated solar cell back film and processing technology |
| CN102555370A (en) * | 2010-12-31 | 2012-07-11 | 苏州中来光伏新材股份有限公司 | Non-fluorinated high-weather-proof high-cohesiveness solar cell back membrane and processing technology |
| CN102555377B (en) * | 2010-12-31 | 2015-01-07 | 苏州中来光伏新材股份有限公司 | EVA (Ethylene vinyl acetate) adhesive integrated solar cell back film and processing technology |
| CN102555370B (en) * | 2010-12-31 | 2015-04-22 | 苏州中来光伏新材股份有限公司 | Non-fluorinated high-weather-proof high-cohesiveness solar cell back membrane and processing technology |
| CN103733724A (en) * | 2011-08-04 | 2014-04-16 | 3M创新有限公司 | Edge protected barrier assemblies |
| US9614113B2 (en) | 2011-08-04 | 2017-04-04 | 3M Innovative Properties Company | Edge protected barrier assemblies |
| CN103733724B (en) * | 2011-08-04 | 2017-05-17 | 3M创新有限公司 | Edge protected barrier assemblies |
| US10038112B2 (en) | 2011-08-04 | 2018-07-31 | 3M Innovative Properties Company | Edge protected barrier assemblies |
| CN103123945A (en) * | 2011-11-21 | 2013-05-29 | 杜邦太阳能有限公司 | Back panel and thin film solar cell |
| CN104425640A (en) * | 2013-08-30 | 2015-03-18 | 东莞南玻光伏科技有限公司 | Photovoltaic module |
| CN104900740A (en) * | 2015-05-11 | 2015-09-09 | 保定市易通光伏科技有限公司 | Photovoltaic backplane, manufacture method thereof and photovoltaic module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20180127 |