CN203085595U - Solar cell back membrane - Google Patents
Solar cell back membrane Download PDFInfo
- Publication number
- CN203085595U CN203085595U CN2012207246051U CN201220724605U CN203085595U CN 203085595 U CN203085595 U CN 203085595U CN 2012207246051 U CN2012207246051 U CN 2012207246051U CN 201220724605 U CN201220724605 U CN 201220724605U CN 203085595 U CN203085595 U CN 203085595U
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- China
- Prior art keywords
- fluorine
- film
- solar cell
- containing thin
- thin layer
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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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- Photovoltaic Devices (AREA)
Abstract
The utility model specially relates to a solar cell back membrane, which belongs to the field of a solar technology. The problems of the present solar cell back membrane that the weatherability is low, the waterproofness is poor, etc. are solved. The solar cell back membrane comprises a first fluorine containing film layer, a base layer and a second fluorine containing film layer which are arranged from up to down. The solar cell back membrane is characterized in that the upper and lower surfaces of the base layer are respectively provided with the first fluorine containing film layer and the second fluorine containing film layer through adhesive layers, and the upper surface of the first fluorine containing film layer is provided with a reflection layer. Compared to the present technology, the solar cell back membrane is advantageous in that the structure is simple and reasonable, production cost is low, delamination phenomenon is not easy to happen, a high adhesive capability, high weatherability, chemically-resistant performance, a high electrical insulating property and high waterproofness are provided, and the efficiency of a solar cell is raised.
Description
Technical field
The utility model belongs to technical field of solar, especially relates to a kind of solar battery back film.
Background technology
Solar energy is the optimal selection that substitutes thermal power generation as a kind of environmental protection, the inexhaustible energy.In use because solar cell needs long term exposure outdoor; so the battery sheet in the photovoltaic module must be protected; to prevent Effect of Environmental and the destruction such as steam, oxygen, ultraviolet ray in the atmosphere, protect the battery sheet so must add one deck notacoria in battery sheet lower end.The main effect of solar battery back film is the overall mechanical strength that improves solar panel; can prevent that in addition water vapor permeable is in sealant; therefore notacoria need possess good insulation and weatherability; these performances mainly are to reach by the basic unit in the notacoria; but out of doors in the use; the erosion that basic unit is subjected to external environment easily causes aging, protects basic unit so need have the material of good weatherability properties, thereby prolongs the useful life of solar battery back film.In addition, solar module in the course of the work, only solar battery sheet produces the principal element of electric current, yet the transparent glass that is arranged on the solar battery sheet surface can reduce the transmitance of light to a certain extent, thereby causes the transfer ratio of solar battery sheet to reduce.
In order to solve the problem that prior art exists, people have carried out long-term exploration, have proposed solution miscellaneous.For example, Chinese patent literature discloses a kind of solar battery back film [application number: 200820133536.0], it is a seven-layer structure, comprises the silicon titanizing film forming layer that is laminated with successively together, fluorine-based rete, silicon titanizing film forming layer, basic unit, silicon titanizing film forming layer, fluorine-based rete and silicon titanizing film forming layer.
Such scheme is in the problem of to a certain degree having alleviated existing solar battery back film weatherability difference, make it have better waterproof and electric insulating quality, but owing to need the more number of plies, so structure is comparatively complicated, manufacture difficulty is big, cost is higher, is prone to delamination, and still there is the low problem of solar cell phototransformation rate in this scheme.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides a kind of simple in structure, and good weatherability can improve the solar battery back film of solar cell light transfer ratio.
For achieving the above object, the utility model has adopted following technical proposal: this solar battery back film, comprise the first fluorine-containing thin layer, basic unit, the second fluorine-containing thin layer that from up to down set gradually, it is characterized in that, described basic unit upper and lower surface is provided with the first fluorine-containing thin layer and the second fluorine-containing thin layer by adhesive layer respectively, and the described first fluorine-containing thin layer upper surface also is provided with reflector layer.The first fluorine-containing thin layer and the second fluorine-containing thin layer can better be protected basic unit, and reflector layer can improve the transfer ratio of solar battery sheet with on the light reflected back solar battery sheet.
In above-mentioned solar battery back film, described reflector layer is a metallized film.
In above-mentioned solar battery back film, the described first fluorine-containing thin layer is any one in PVF film, PVDF film and the PTFE film.
In above-mentioned solar battery back film, the described second fluorine-containing thin layer is any one in PVF film, PVDF film and the PTFE film.
In above-mentioned solar battery back film, described basic unit is the PET film.
In above-mentioned solar battery back film, described adhesive layer is the EVA glued membrane.
Compared with prior art, the advantage of this solar battery back film is: simple and reasonable, production cost is low, is not prone to delamination, have high adhesion force, high-weatherability, chemical resistance, high electric insulating quality and high water proofing property, can improve the efficient of solar cell.
Description of drawings
The sectional structure schematic diagram that Fig. 1 provides for the utility model.
Among the figure, the first fluorine-containing thin layer 1, basic unit's 2, second fluorine-containing thin layer 3, adhesive layer 4, reflector layer 5.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, this solar battery back film, comprise the first fluorine-containing thin layer 1, basic unit's 2, the second fluorine-containing thin layer 3 that from up to down set gradually, basic unit's 2 upper and lower surfaces are provided with the first fluorine-containing thin layer 1 by adhesive layer 4 respectively and second fluorine-containing thin layer 3, the first fluorine-containing thin layer 1 upper surfaces also are provided with reflector layer 5.The first fluorine-containing thin layer 1 and the second fluorine-containing thin layer 3 can better be protected basic unit 2, and reflector layer 5 can improve the light transfer ratio of solar battery sheet with on the light reflected back solar battery sheet.Reflector layer 5 is a metallized film.The first fluorine-containing thin layer 1 is any one in PVF film, PVDF film and the PTFE film.The second fluorine-containing thin layer 3 is any one in PVF film, PVDF film and the PTFE film.Basic unit 2 is the PET film.Adhesive layer 4 is the EVA glued membrane.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as the first fluorine-containing thin layer 1, basic unit's 2, second fluorine-containing thin layer 3, adhesive layer 4, reflector layer 5 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (6)
1. solar battery back film, comprise the first fluorine-containing thin layer (1), basic unit (2), the second fluorine-containing thin layer (3) that from up to down set gradually, it is characterized in that, described basic unit (2) upper and lower surface is provided with the first fluorine-containing thin layer (1) and the second fluorine-containing thin layer (3) by adhesive layer (4) respectively, and described first fluorine-containing thin layer (1) upper surface also is provided with reflector layer (5).
2. solar battery back film according to claim 1 is characterized in that, described reflector layer (5) is a metallized film.
3. solar battery back film according to claim 1 is characterized in that, the described first fluorine-containing thin layer (1) is any one in PVF film, PVDF film and the PTFE film.
4. solar battery back film according to claim 1 is characterized in that, the described second fluorine-containing thin layer (3) is any one in PVF film, PVDF film and the PTFE film.
5. according to claim 1 or 2 or 3 or 4 described solar battery back films, it is characterized in that described basic unit (2) is the PET film.
6. according to claim 1 or 2 or 3 or 4 described solar battery back films, it is characterized in that described adhesive layer (4) is the EVA glued membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207246051U CN203085595U (en) | 2012-12-24 | 2012-12-24 | Solar cell back membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207246051U CN203085595U (en) | 2012-12-24 | 2012-12-24 | Solar cell back membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085595U true CN203085595U (en) | 2013-07-24 |
Family
ID=48831405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207246051U Expired - Fee Related CN203085595U (en) | 2012-12-24 | 2012-12-24 | Solar cell back membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203085595U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485377A (en) * | 2014-12-18 | 2015-04-01 | 江苏宇昊新能源科技有限公司 | Solar backing film with high conversion efficiency |
| CN105590970A (en) * | 2016-02-29 | 2016-05-18 | 中利腾晖光伏科技有限公司 | Photovoltaic assembly used for high altitude region |
-
2012
- 2012-12-24 CN CN2012207246051U patent/CN203085595U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485377A (en) * | 2014-12-18 | 2015-04-01 | 江苏宇昊新能源科技有限公司 | Solar backing film with high conversion efficiency |
| CN105590970A (en) * | 2016-02-29 | 2016-05-18 | 中利腾晖光伏科技有限公司 | Photovoltaic assembly used for high altitude region |
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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 |
Granted publication date: 20130724 Termination date: 20151224 |
|
| EXPY | Termination of patent right or utility model |