CN101847667A - Special back seal film for solar cell - Google Patents
Special back seal film for solar cell Download PDFInfo
- Publication number
- CN101847667A CN101847667A CN 201010022009 CN201010022009A CN101847667A CN 101847667 A CN101847667 A CN 101847667A CN 201010022009 CN201010022009 CN 201010022009 CN 201010022009 A CN201010022009 A CN 201010022009A CN 101847667 A CN101847667 A CN 101847667A
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- CN
- China
- Prior art keywords
- solar cell
- ethylene
- film
- back seal
- seal film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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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- Laminated Bodies (AREA)
Abstract
The invention relates to a backboard material of a back protective layer of a solar cell assembly. The special back seal film for a solar cell is a composite film formed by carrying out vacuum hot pressing and laminating on the following three layered film materials: the outer layer is made of one of the following materials: polyvinyl fluoride, polyvinylidene fluoride, fluoroplastics, ethylene-trifluorochloroethylene copolymer or ethylene-propylene-diene monomer; the middle layer is one of the following materials: ethylene-vinyl acetate or epoxy resin; and the inner layer is polyethylene terephthalate. The backboard material of the invention has the advantages of strong binding force, low cost, good dimensional stability and the like, has good air isolating performance, good oxidation protection and moisture resistance, good electrical insulation performance and performance of preventing an adhesive substance from hydrolyzing for a long time, and is the excellent back seal film for the solar cell.
Description
Technical field
The present invention relates to a kind of back veneer material of solar module back-protective layer.
Background technology
The back seal film that solar cell package is used, must possess good air isolation performance, good anti-oxidation and moisture resistance energy, excellent electric insulating energy, can prevent the performance of binding hydrolysis etc. for a long time, present domestic solar cell producer is employed all to be TPT (polyvinyl fluoride composite membrane) back seal film of the solar energy special use of expensive import, the structure that is of five storeys is followed successively by outer pvf film (PVF) film, adhesive layer, intermediate layer polyester (PET) film, adhesive layer, internal layer pvf film (PVF) film.
Mainly there are following problem in present technology and design: 1. because combining between intermediate layer polyester (PET) film and inside and outside strata fluoride film (PVF) film needs adhesive layer, it is loaded down with trivial details that back seal film is processed; 2. intermediate layer polyester (PET) film and the easy delamination of pvf film (PVF) film influence product quality; Solar cell in use, the heat of generation is more, the layer structure of multilayer make the heat radiation become the difficulty, lowered size of components stability simultaneously; 4. cost an arm and a leg.
Summary of the invention
The technical problem that the present invention need solve is: problems such as the processing at the existence of existing solar battery back envelope film is loaded down with trivial details, heat radiation difficulty, a kind of and battery sheet binding ability are strong, with low cost, dimensional stability is good, has the solar cell backboard material of good air isolation performance and provide.
The technical solution adopted in the present invention: this special back seal film for solar cell is the composite membrane that is made of through the vacuum hotpressing lamination three layer laminated film materials, and this three layer laminated films material is: outer is one of following material: polyvinyl fluoride, Kynoar, fluoroplastics, ethene one chlorotrifluoroethylene or ethylene propylene diene rubber; The middle level is one of following material: ethylene-vinyl acetate or epoxy resin; Internal layer is a PETG.
Beneficial effect of the present invention: back veneer material of the present invention has strong, the with low cost and good advantages such as dimensional stability of adhesion, and have good air isolation performance, good anti-oxidation and moisture resistance energy, excellent electric insulating energy, can prevent the performance of the hydrolysis of binding for a long time, be a kind of outstanding solar battery back envelope film.
Embodiment
Because the PET in the middle of the existing TPT composite membrane mainly plays insulation, and the fluorine material mainly plays secluding air, steam and anti-oxidation.Just be based on material role in composite membrane in above-mentioned two, the present invention has only kept PET and fluorine material.Owing to reduced the use of one deck fluorine material and two layers of adhesive EVA, therefore significantly reduced the cost of composite membrane, simultaneously owing to reduced the dimensional stability that therefore number of plies has improved composite membrane.
The difference of the present invention and prior art is mainly reflected in:
1. the PETG (PET) in the TPT back seal film structure is replaced with ethylene-vinyl acetate (EVA);
2. EVA or epoxy resin (epoxy resin that comprises modification) are placed between polyvinyl fluoride (PVF) or Kynoar (PVDF) or fluoroplastics (THV) or ethene one chlorotrifluoroethylene (ECTFE) or ethylene propylene diene rubber (EPDM) and the PET and carry out vacuum pressing-combining;
3. reduce the number of plies of backboard, improved dimensional stability:
Claims (2)
1. special back seal film for solar cell is characterized in that the composite membrane that is made of through the vacuum hotpressing lamination three layer laminated film materials, and this three layer laminated films material is:
Skin is one of following material: polyvinyl fluoride, Kynoar, fluoroplastics, ethene one chlorotrifluoroethylene or ethylene propylene diene rubber;
The middle level is one of following material: ethylene-vinyl acetate (EVA) or epoxy resin;
Layer is PETG (PET).
2. a kind of special back seal film for solar cell according to claim 1 is characterized in that epoxy resin has comprised the epoxy resin of modification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010022009 CN101847667A (en) | 2010-01-06 | 2010-01-06 | Special back seal film for solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010022009 CN101847667A (en) | 2010-01-06 | 2010-01-06 | Special back seal film for solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101847667A true CN101847667A (en) | 2010-09-29 |
Family
ID=42772199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010022009 Pending CN101847667A (en) | 2010-01-06 | 2010-01-06 | Special back seal film for solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101847667A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642358A (en) * | 2012-04-23 | 2012-08-22 | 升信新材（北京）科技有限公司 | Polyvinylidene fluoride film |
| CN102867868A (en) * | 2011-07-07 | 2013-01-09 | 昆山雅森电子材料科技有限公司 | Solar cell back plate structure |
| CN103022196A (en) * | 2012-12-13 | 2013-04-03 | 江苏盛福高分子材料科技有限公司 | Novel DFPC solar insulation rear panel and manufacture method thereof |
| CN103560164A (en) * | 2013-11-20 | 2014-02-05 | 无锡中洁能源技术有限公司 | Fluorine-containing radiating type solar cell backboard |
| EP2724841A4 (en) * | 2011-06-22 | 2015-08-26 | Kureha Elastomer Co Ltd | Diaphragm for producing solar cell module and method for producing solar cell module |
| GB2571255A (en) * | 2018-02-14 | 2019-08-28 | Camvac Ltd | Film lamination process |
-
2010
- 2010-01-06 CN CN 201010022009 patent/CN101847667A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2724841A4 (en) * | 2011-06-22 | 2015-08-26 | Kureha Elastomer Co Ltd | Diaphragm for producing solar cell module and method for producing solar cell module |
| CN102867868A (en) * | 2011-07-07 | 2013-01-09 | 昆山雅森电子材料科技有限公司 | Solar cell back plate structure |
| CN102867868B (en) * | 2011-07-07 | 2015-07-22 | 昆山雅森电子材料科技有限公司 | Solar cell back plate structure |
| CN102642358A (en) * | 2012-04-23 | 2012-08-22 | 升信新材（北京）科技有限公司 | Polyvinylidene fluoride film |
| CN102642358B (en) * | 2012-04-23 | 2015-04-15 | 升信新材（北京）科技有限公司 | Polyvinylidene fluoride film |
| CN103022196A (en) * | 2012-12-13 | 2013-04-03 | 江苏盛福高分子材料科技有限公司 | Novel DFPC solar insulation rear panel and manufacture method thereof |
| CN103560164A (en) * | 2013-11-20 | 2014-02-05 | 无锡中洁能源技术有限公司 | Fluorine-containing radiating type solar cell backboard |
| GB2571255A (en) * | 2018-02-14 | 2019-08-28 | Camvac Ltd | Film lamination process |
| GB2571255B (en) * | 2018-02-14 | 2020-12-16 | Camvac Ltd | Film lamination process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100929 |