CN202180616U - Solar battery back plate - Google Patents
Solar battery back plate Download PDFInfo
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- CN202180616U CN202180616U CN 201120237271 CN201120237271U CN202180616U CN 202180616 U CN202180616 U CN 202180616U CN 201120237271 CN201120237271 CN 201120237271 CN 201120237271 U CN201120237271 U CN 201120237271U CN 202180616 U CN202180616 U CN 202180616U
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- layer
- outer covering
- solar cell
- adhesion agent
- teflon
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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
Abstract
The utility model discloses a solar battery back plate comprising a gas resistant layer, a processing resistant layer and a plurality of external coating layers, wherein at least one external coating layer is a composite film made of polyimide and Teflon; the composite film can be formed by jointing a polyimide film with a Teflon membrane phase, and also can be a co-extrusion film made of polyimide and Teflon; the gas resistant layer can block water vapor effectively; the processing resistant layer is suitable for jointing processing or playing a buffering effect; polyimide resin has weatherability and therefore can protect the gas resistant layer; and Teflon can further block water vapor and ultraviolet rays. Therefore, the solar battery back plate has excellent water vapor blocking effect and processing resistance.
Description
Technical field
The utility model belongs to area of solar cell, relates generally to a kind of solar cell backboard structure with composite membrane of being processed by polyimides and Teflon.
Background technology
Along with the development of human civilization, the whole world faces problems such as serious energy crisis and environmental pollution.Wherein, with the photovoltaic solar cell that can solar energy directly be transformed into electric energy as solving whole world energy crisis and reducing one of important method of environmental pollution.The module that solar cell constitutes is arranged at the open air usually; Undermine solar module for fear of factors such as the aqueous vapor of outdoor environment, high temperature; Therefore aqueous vapor through corrosion circuit etc. for example, particularly requires solar cell backboard to have weatherability and the vapor transmission rate is little.
The conventional solar cell back board structure mainly is the fluoro-containing copolymer film (Tedlar) that the upper and lower surperficial applying E.I.Du Pont Company at the polyethylene terephthalate layer sells.In No. 201041150 Taiwan patent; Disclosed a kind of solar cell backboard structure of improvement; As shown in Figure 4; Said solar cell backboard structure comprise conductor watertight composition 44, respectively be formed at said conductor watertight composition 44 upper and lower surfaces second insulating barrier 46 and first insulating barrier 42, be formed at the weathering layer 48 on said second insulating barrier 46 and be formed at the primer layer 40 on said first insulating barrier 42, said Taiwan patent is that second insulating barrier 46 of polyethylene terephthalate solves the problems that pin hole runs through and electric arc runs through with weathering layer 48 by material.Yet, still not enough as weathering layer 48 in effect aspect weatherability, anti-UV property and the anti-aqueous vapor with polyethylene terephthalate.
Therefore, still need a kind of solar cell backboard structure with excellent anti-aqueous vapor effect.
The utility model content
In order to overcome above-mentioned defective, the utility model provides a kind of solar cell backboard, and said solar cell backboard has excellent anti-aqueous vapor effect and anti-processability.
The utility model for the technical scheme that solves its technical problem and adopt is:
A kind of solar cell backboard; Comprise gas barrier layer, anti-machined layer and some outer covering layers; And having one deck outer covering layer at least is the composite membrane of being processed by polyimides and Teflon; Said gas barrier layer has relative upper and lower surface, and said anti-machined layer is positioned at said gas barrier layer top, and said outer covering layer is positioned at said gas barrier layer below.Wherein, the said composite membrane of being processed by polyimides and Teflon can be to be made up of polyimide film and the Teflon film institute that fits, and said Teflon film is positioned at the polyimide film lower surface; The said composite membrane of being processed by polyimides and Teflon also can be the co-extruded films of polyimides and Teflon.
The further technical scheme of the utility model is:
Said gas barrier layer is a metal level.The thickness of gas barrier layer is 20 to 50 microns.
Said anti-machined layer is a kind of in co-extruded films, polyethylene terephthalate film and the ethylene vinyl acetate resin molding of composite membrane, polyethylene terephthalate and the ethylene vinyl acetate resin of being fitted each other by polyethylene terephthalate film and ethylene vinyl acetate resin molding.The thickness of anti-machined layer is 25 to 300 microns.
Said solar cell backboard can be following structure: first outer covering layer, first adhesion agent layer and second adhesion agent layer that have gas barrier layer, anti-machined layer, processed by polyimides and Teflon; Said first adhesion agent layer adheres to said gas barrier layer upper surface; Said anti-machined layer adheres on said first adhesion agent layer; Said second adhesion agent layer adheres to said gas barrier layer lower surface, and said first outer covering layer adheres on said second adhesion agent layer.Second outer covering layer that can also have the 3rd adhesion agent layer and processed by polyimides and Teflon, said the 3rd adhesion agent layer adhere on said first outer covering layer, and said second outer covering layer adheres on said the 3rd adhesion agent layer.Wherein, the thickness of said second outer covering layer is 25 to 65 microns, and the thickness of said first outer covering layer is 25 to 300 microns.Second outer covering layer is made up of polyimide film and the Teflon film institute that fits, and said Teflon film is positioned at the polyimide film lower surface, and the thickness of said polyimide film and Teflon film is all 12 to 30 microns.
Said solar cell backboard can be following structure also: first outer covering layer that has gas barrier layer, anti-machined layer, second outer covering layer, first adhesion agent layer, second adhesion agent layer, the 3rd adhesion agent layer and processed by polyethylene terephthalate; Said second outer covering layer is the composite membrane of being processed by polyimides and Teflon; Said first adhesion agent layer adheres to said gas barrier layer upper surface; Said anti-machined layer adheres on said first adhesion agent layer; Said second adhesion agent layer adheres to said gas barrier layer lower surface; Said first outer covering layer adheres on said second adhesion agent layer, and said the 3rd adhesion agent layer adheres on said first outer covering layer, and said second outer covering layer adheres on said the 3rd adhesion agent layer.Wherein, the thickness of said second outer covering layer is 25 to 65 microns, and the thickness of said first outer covering layer is 25 to 300 microns.Said second outer covering layer is made up of polyimide film and the Teflon film institute that fits, and said Teflon film is positioned at the polyimide film lower surface, and the thickness of polyimide film and Teflon film is all 12 to 30 microns.
When said anti-machined layer is the polyethylene terephthalate film; Said solar cell backboard can also have the 4th adhesion agent layer and ethylene vinyl acetate resin bed; Be stained with the 4th adhesion agent layer on the said anti-machined layer, be stained with the ethylene vinyl acetate resin bed on said the 4th adhesion agent layer.
The beneficial effect of the utility model is: the utility model utilizes the gas barrier layer of material for metal, and it is arranged at the core of solar cell backboard, with effective obstruct aqueous vapor; And on the gas barrier layer one side, adhere to anti-machined layer; Anti-machined layer be positioned at the inboard and be attached at solar cell or solar module on, fit processing or buffering effect be provided being suitable for, on the another side of gas barrier layer, adhere to the several layers outer covering layer; Outer covering layer then optionally provides thermal stress balance and weather resistance; And at least one outer covering layer is the composite membrane of being processed by polyimides and Teflon, can be by polyimide film and Teflon film fit the institute constitute, also can be the co-extruded films of polyimides and Teflon; Polyimide resin has weather-proof character; Can protect gas barrier layer, Teflon then can further block aqueous vapor and uvioresistant, so the solar cell backboard of the utility model has excellent anti-aqueous vapor effect and anti-processability.
Description of drawings
Figure 1A and Figure 1B are the solar cell backboard structural representation of the utility model embodiment 1, and wherein, Figure 1B is polyimide film and the Teflon film formation that fits for explanation first outer covering layer;
Fig. 2 A and Fig. 2 B are the solar cell backboard structural representation of the utility model embodiment 2, and wherein, Fig. 2 B is polyimide film and the Teflon film formation that fits for explanation second outer covering layer;
Fig. 3 is the solar cell backboard structural representation of the utility model embodiment 3;
Fig. 4 is the solar cell backboard structure of No. 201041150 Taiwan patent;
Description of reference numerals
10 gas barrier layers
10a gas barrier layer upper surface
10b gas barrier layer lower surface
11a first adhesion agent layer
11b second adhesion agent layer
11c the 4th adhesion agent layer
11d the 3rd adhesion agent layer
12 anti-machined layer
13 first outer covering layers
13 ' second outer covering layer
The 13a polyimide film
13b Teflon film
14 ethylene vinyl acetate resin beds
40 primer layers
42 first insulating barriers
44 conductor watertight compositions
46 second insulating barriers
48 weathering layers.
The specific embodiment
Embodiment 1: a kind of solar cell backboard; Shown in Figure 1A; Have gas barrier layer 10, the first adhesion agent layer 11a, the second adhesion agent layer 11b, the anti-machined layer 12 of metal material and first outer covering layer of processing by polyimides and Teflon 13; Said gas barrier layer has relative upper and lower surperficial 10a, 10b, and the said first adhesion agent layer 11a adheres to said gas barrier layer 10 upper surfaces, and said anti-machined layer 12 adheres on the said first adhesion agent layer 11a; The said second adhesion agent layer 11b adheres to said gas barrier layer lower surface 10b, and said first outer covering layer 13 adheres on the said second adhesion agent layer 11b.
It is following that the solar cell backboard of present embodiment prepares process: mainly be that preparation one material for example is that aluminium sheet and thickness are 20 to 50 microns gas barrier layer 10; Above that, respectively do for oneself 25 to 300 microns the anti-machined layer 12 and first outer covering layer 13 of lower surface 10a, the 10b first adhesion agent layer 11a and the second adhesion agent layer 11b bond thickness through material such as epoxy resin or polyurethane, get final product.
Wherein, arbitrary adhesion agent layer of the utility model (for example first adhesion agent layer, second adhesion agent layer and after the adhesion agent layer stated) thickness is respectively done for oneself 10 to 50 microns, and can be black or white, for example contains additives such as carbon black, titanium dioxide or pigment.
In the present embodiment, a kind of in co-extruded films, polyethylene terephthalate film and the ethylene vinyl acetate resin molding of composite membrane, polyethylene terephthalate and the ethylene vinyl acetate resin of fitting each other of said anti-machined layer 12 by polyethylene terephthalate film and ethylene vinyl acetate resin molding.Polyethylene terephthalate has good very property, is particularly suitable for fitting; The ethylene vinyl acetate resin then can provide buffering effect.Comparative optimization be; Said anti-machined layer 12 is the composite membrane of polyethylene terephthalate and ethylene vinyl acetate resin, for example the folded structure of the polyethylene terephthalate film of the co-extruded films of polyethylene terephthalate and ethylene vinyl acetate resin or middle no viscose glue and ethylene vinyl acetate resin molding.
Present embodiment is stressed that said first outer covering layer 13 is composite membranes of being processed by polyimides and Teflon, can be the co-extruded films of polyimides and Teflon; Also can be to be made up of polyimide film and the Teflon film institute that fits, shown in Figure 1B, and said Teflon film 13b be positioned at polyimide film 13a lower surface, and the thickness of Teflon film and polyimide film is respectively done for oneself 12 to 30 microns.When composite membrane that said first outer covering layer 13 is processed for polyimides and Teflon, can promote the adhesion strength between the second adhesion agent layer 11b and first outer covering layer 13 by polyimides.
The said Teflon of the utility model is meant fluorine-containing polymer; For example: polyvinyl fluoride (Polyvinyl fluoride; PVF), Kynoar (Polyvinylidene fluoride, PVDF), polytrifluorochloroethylene (Polychlorotrifluorethylene, PCTFE), polytetrafluoroethylene (PTFE) (polytetrafluorethylene; PTFE) or the copolymer of tetrafluoroethene and ethene (ETFE), and with the copolymer of polytetrafluoroethylene (PTFE) and tetrafluoroethene and ethene is good.
Embodiment 2: shown in Fig. 2 A; Solar cell backboard for present embodiment; The solar cell backboard of the solar cell backboard of present embodiment and embodiment 1 is roughly the same, and difference is that the solar cell backboard of present embodiment also comprises the 3rd adhesion agent layer 11d and second outer covering layer of being processed by polyimides and Teflon 13 '.Said the 3rd adhesion agent layer 11d adheres on said first outer covering layer 13, and said second outer covering layer 13 ' adheres on said the 3rd adhesion agent layer 11d.The thickness of second outer covering layer is 25 to 65 microns.The composite membrane of second outer covering layer 13 ' for processing by polyimides and Teflon, polyimide resin has weather-proof character, can protect gas barrier layer, and Teflon then can further block aqueous vapor and uvioresistant.
Shown in Fig. 2 B; When said second outer covering layer 13 ' is made up of polyimide film 13a and Teflon film 13b applying institute; Said polyimide film 13a is folded between said the 3rd adhesion agent layer 11d and the Teflon film 13b; Wherein, the thickness of said polyimide film 13a and Teflon film 13b is respectively done for oneself 12 to 30 microns.
Embodiment 3: as shown in Figure 3; Solar cell backboard for present embodiment; The solar cell backboard of the solar cell backboard of present embodiment and embodiment 2 is roughly the same; Difference is that the said anti-machined layer 12 of present embodiment is the polyethylene terephthalate film, and with lifting processing characteristics and thermal stress balance, and the solar cell backboard of present embodiment also comprises the 4th adhesion agent layer 11c and ethylene vinyl acetate resin (EVA) layer 14; Said the 4th adhesion agent layer 11c adheres on the anti-machined layer 12, and said ethylene vinyl acetate resin bed 14 adheres on said the 4th adhesion agent layer 11c.
Embodiment 4: the solar cell backboard of the solar cell backboard of present embodiment and embodiment 2 is roughly the same; Difference is; In the present embodiment, first outer covering layer is processed by polyethylene terephthalate, and second outer covering layer is the composite membrane of being processed by polyimides and Teflon.
Test case: according to ASTM F-1249, carry out the test of aqueous vapor penetrance, and the result is embedded in table 1.
Polyethylene terephthalate (PET): adopt Xinguang Synthetic Fibre Co. Ltd.'s polyester film, G281
Epoxy resin: adopt the epoxy resin of Asia electricity material preparation, AEM-V1
Aluminium sheet: adopt Nippon Light Metal Co., Ltd, 8079-0
Polyimides (PI): SKC Kolon, FEP
Polytetrafluoroethylene (PTFE): Dupont Kapton, FN PI film
Table 1:
The aqueous vapor penetrance of conventional solar cell backboard is general big about 1.8g/m
2More than-the sky, the solar cell backboard structure of the utility model can reduce the aqueous vapor penetrance significantly to 0.008g/m
2-day, have excellent anti-aqueous vapor effect.
Claims (19)
1. solar cell backboard; It is characterized in that; Comprise gas barrier layer, anti-machined layer and some outer covering layers, and to have one deck outer covering layer at least be the composite membrane of being processed by polyimides and Teflon, said gas barrier layer has relative upper and lower surface; Said anti-machined layer is positioned at said gas barrier layer top, and said outer covering layer is positioned at said gas barrier layer below.
2. solar cell backboard according to claim 1 is characterized in that, the said composite membrane of being processed by polyimides and Teflon is to be made up of polyimide film and the Teflon film institute that fits, and said Teflon film is positioned at the polyimide film lower surface.
3. solar cell backboard according to claim 1 is characterized in that, the said composite membrane of being processed by polyimides and Teflon is the co-extruded films of polyimides and Teflon.
4. solar cell backboard according to claim 1 is characterized in that, said gas barrier layer is a metal level.
5. solar cell backboard according to claim 1; It is characterized in that said anti-machined layer is a kind of in co-extruded films, polyethylene terephthalate film and the ethylene vinyl acetate resin molding of composite membrane, polyethylene terephthalate and the ethylene vinyl acetate resin of being fitted each other by polyethylene terephthalate film and ethylene vinyl acetate resin molding.
6. solar cell backboard according to claim 1 is characterized in that, the thickness of said gas barrier layer is 20 to 50 microns.
7. solar cell backboard according to claim 1 is characterized in that, the thickness of said anti-machined layer is 25 to 300 microns.
8. according to claim 2 or 3 described solar cell backboards; It is characterized in that be provided with first adhesion agent layer, second adhesion agent layer and first outer covering layer, said first outer covering layer is the composite membrane of being processed by polyimides and Teflon; Said first adhesion agent layer adheres to said gas barrier layer upper surface; Said anti-machined layer adheres on said first adhesion agent layer, and said second adhesion agent layer adheres to said gas barrier layer lower surface, is stained with first outer covering layer on said second adhesion agent layer.
9. solar cell backboard according to claim 8; It is characterized in that; Second outer covering layer that is provided with the 3rd adhesion agent layer and is processed by polyimides and Teflon, said the 3rd adhesion agent layer adhere on said first outer covering layer, and said second outer covering layer adheres on said the 3rd adhesion agent layer.
10. solar cell backboard according to claim 9 is characterized in that, the thickness of said second outer covering layer is 25 to 65 microns.
11. solar cell backboard according to claim 9 is characterized in that, said second outer covering layer is made up of polyimide film and the Teflon film institute that fits, and said Teflon film is positioned at the polyimide film lower surface.
12. solar cell backboard according to claim 11 is characterized in that, the thickness of said polyimide film and Teflon film is all 12 to 30 microns.
13. solar cell backboard according to claim 9 is characterized in that, the thickness of said first outer covering layer is 25 to 300 microns.
14. solar cell backboard according to claim 1; It is characterized in that; First outer covering layer that is provided with first adhesion agent layer, second adhesion agent layer, the 3rd adhesion agent layer, second outer covering layer and processes by polyethylene terephthalate; Said second outer covering layer is the composite membrane of being processed by polyimides and Teflon, and said first adhesion agent layer adheres to said gas barrier layer upper surface, and said anti-machined layer adheres on said first adhesion agent layer; Said second adhesion agent layer adheres to said gas barrier layer lower surface; Said first outer covering layer adheres on said second adhesion agent layer, and said the 3rd adhesion agent layer adheres on said second outer covering layer, and said second outer covering layer adheres on said the 3rd adhesion agent layer.
15. solar cell backboard according to claim 14 is characterized in that, the thickness of said second outer covering layer is 25 to 65 microns.
16. solar cell backboard according to claim 14 is characterized in that, the thickness of said first outer covering layer is 25 to 300 microns.
17. solar cell backboard according to claim 14 is characterized in that, said second outer covering layer is made up of polyimide film and the Teflon film institute that fits, and said Teflon film is positioned at the polyimide film lower surface.
18. solar cell backboard according to claim 17 is characterized in that, the thickness of said polyimide film and Teflon film is all 12 to 30 microns.
19. according to claim 1 or 14 described solar cell backboards; It is characterized in that; Said anti-machined layer is the polyethylene terephthalate film, is stained with the 4th adhesion agent layer on the said anti-machined layer, is stained with the ethylene vinyl acetate resin bed on said the 4th adhesion agent layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120237271 CN202180616U (en) | 2011-07-07 | 2011-07-07 | Solar battery back plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120237271 CN202180616U (en) | 2011-07-07 | 2011-07-07 | Solar battery back plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202180616U true CN202180616U (en) | 2012-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120237271 Expired - Fee Related CN202180616U (en) | 2011-07-07 | 2011-07-07 | Solar battery back plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202180616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862344A (en) * | 2011-07-07 | 2013-01-09 | 昆山雅森电子材料科技有限公司 | Solar cell backplane |
-
2011
- 2011-07-07 CN CN 201120237271 patent/CN202180616U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862344A (en) * | 2011-07-07 | 2013-01-09 | 昆山雅森电子材料科技有限公司 | Solar cell backplane |
| CN102862344B (en) * | 2011-07-07 | 2015-01-07 | 昆山雅森电子材料科技有限公司 | Solar cell backplane |
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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: 20120404 Termination date: 20170707 |