CN102867868A - Solar cell back plate structure - Google Patents
Solar cell back plate structure Download PDFInfo
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- CN102867868A CN102867868A CN2011101887593A CN201110188759A CN102867868A CN 102867868 A CN102867868 A CN 102867868A CN 2011101887593 A CN2011101887593 A CN 2011101887593A CN 201110188759 A CN201110188759 A CN 201110188759A CN 102867868 A CN102867868 A CN 102867868A
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- layer
- solar cell
- teflon
- cell backboard
- backboard structure
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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 invention discloses a solar cell back plate structure which is provided with a core layer, a first adhesive layer, a second adhesive layer, an inner coating layer and an outer coating layer. The inner coating layer is adhered on the upper surface of the core layer through the first adhesive layer, the outer coating layer is adhered on the lower surface of the core layer through the second adhesive layer, and both the inner coating layer and the outer coating layer are composite films made of polyimide and Teflon. Water vapor is effectively stopped by the outer coating layer which is the composite film made of the polyimide and the Teflon, and the inner coating layer is positioned on the inner side and attached on a solar cell or a solar cell module, so that the water vapor stopping effect is further improved. Besides, the composite films made of the polyimide and the Teflon have weather resistance, so that the solar cell back plate structure has an excellent water vapor prevention effect and weather resistance or machining resistance.
Description
Technical field
The invention belongs to area of solar cell, relate generally to a kind of solar cell backboard with composite membrane of being made by polyimides and Teflon.
Background technology
Along with the development of human civilization, the whole world faces the problems such as serious energy crisis and environmental pollution.Wherein, with the photovoltaic solar cell that solar energy directly can 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 consists of is arranged at the open air usually, undermine solar module for fear of factors such as the aqueous vapor of outdoor environment, high temperature, such as aqueous vapor through corrosion circuit etc., therefore, particularly require 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 2, described solar cell backboard structure comprise conductor watertight composition 24, respectively be formed at described conductor watertight composition 24 upper and lower surfaces the second insulating barrier 26 and the first insulating barrier 22, be formed at the weathering layer 28 on described the second insulating barrier 26 and be formed at primer layer 20 on described the first insulating barrier 22, described Taiwan patent is that the second insulating barrier 26 and the weathering layer 28 of polyethylene terephthalate solves the problem that pin hole runs through and electric arc runs through by material.Yet, still not enough in effect aspect weatherability, anti-UV and the anti-aqueous vapor as weathering layer 48 with polyethylene terephthalate.
Therefore, still need a kind of solar cell backboard structure with excellent anti-aqueous vapor effect.
Summary of the invention
In order to overcome defects, the invention provides a kind of solar cell backboard structure, described solar cell backboard structure has excellent anti-aqueous vapor effect and weatherability or anti-processability.
The present invention for the technical scheme that solves its technical problem and adopt is:
A kind of solar cell backboard structure, be provided with core layer, the first adhesion agent layer, the second adhesion agent layer, internal coated layer and outer covering layer, described internal coated layer and described outer covering layer are all the composite membrane of being made by polyimides and Teflon, described core layer has relative upper and lower surface, described internal coated layer adheres to described core layer upper surface by the first adhesion agent layer, and described outer covering layer adheres to described core layer lower surface by the second adhesion agent layer.
Further technical scheme of the present invention is:
The described composite membrane of being made by polyimides and Teflon can be by polyimide film and Teflon film fit the institute consist of, the Teflon film of described internal coated layer is positioned at the polyimide film upper surface, the Teflon film of described outer covering layer is positioned at the polyimide film lower surface.The thickness of described polyimide film and Teflon film is all 12 to 50 microns.
The described composite membrane of being made by polyimides and Teflon also can be the co-extruded films of polyimides and Teflon.
Described core layer is polymer material layer, preferably the polyethylene terephthalate layer.
The thickness of described core layer is 75 to 275 microns.
The thickness of described internal coated layer is 24 to 100 microns.
The thickness of described outer covering layer is 24 to 100 microns.
Preferably described internal coated layer is identical with described outer covering layer thickness.
The invention has the beneficial effects as follows: the composite membrane that utilization of the present invention is made by polyimides and Teflon is as outer covering layer, with effective obstruct aqueous vapor, and will be positioned at the inboard as internal coated layer by the composite membrane that polyimides and Teflon are made and be attached at solar cell or solar module on, with further lifting moisture obstruction, in addition, the composite membrane of being made by polyimides and Teflon also has weather resistance, and therefore solar cell backboard structure of the present invention has excellent anti-aqueous vapor effect and weatherability or anti-processability.
Description of drawings
Figure 1A and Figure 1B are solar cell backboard structural representation of the present invention, and wherein, Figure 1B consists of for being fitted by polyimide film and Teflon film for internal coated layer and outer covering layer are described;
Fig. 2 is the solar cell backboard structure of No. 201041150 Taiwan patent;
Description of reference numerals
10 core layers
10a core layer upper surface
10b core layer lower surface
11a the first adhesion agent layer
11b the second adhesion agent layer
12 internal coated layers
The 12a polyimide film
12b Teflon film
13 outer covering layers
The 13a polyimide film
13b Teflon film
20 primer layers
22 first insulating barriers
24 conductor watertight compositions
26 second insulating barriers
28 weathering layers.
Embodiment
Embodiment: a kind of solar cell backboard structure, shown in Figure 1A and Figure 1B, have core layer 10, the first adhesion agent layer 11a, the second adhesion agent layer 11b, internal coated layer 12 and outer covering layer 13, described internal coated layer 12 and described outer covering layer 13 are all the composite membrane of being made by polyimides and Teflon, described core layer 10 has relative upper and lower surperficial 10a, 10b, described internal coated layer 12 adheres to described core layer upper surface 10a by the first adhesion agent layer 11a, and described outer covering layer 13 adheres to described core layer lower surface 10b by the second adhesion agent layer 11b.
Solar cell backboard structure preparation process of the present invention is as follows: mainly be that preparation one material for example is that polyethylene terephthalate and thickness are 75 to 275 microns core layer 10, thereon, lower surface 10a, 10b the first adhesion agent layer 11a and respectively do for oneself 24 to 100 microns internal coated layer 12 and the outer covering layer 13 of the second adhesion agent layer 11b bond thickness by material such as epoxy resin, can obtain solar cell backboard structure of the present invention.Preferably the thickness of internal coated layer and outer covering layer is identical, to keep the very property of solar cell backboard structure.
The first adhesion agent layer 11a of the present invention and the second adhesion agent layer 11b can be black or white person, such as containing the additives such as carbon black, titanium dioxide or pigment.
The present embodiment is stressed that, internal coated layer 12 and the composite membrane of outer covering layer 13 for being made by polyimides and Teflon, the co-extruded films of polyimides and Teflon for example, perhaps as shown in Figure 1B, outer covering layer 13 is made of thickness 12 to 30 polyimide film 13a and the Teflon film 13b institute that fits of respectively doing for oneself, internal coated layer 12 is made of thickness 12 microns to 50 microns polyimide film 12a and the Teflon film 12b institute that fits of respectively doing for oneself, when using the composite membrane of being made by polyimides and Teflon, can be by the adhesion strength of polyimides lifting with adhesion agent layer, for example, adhesion strength between the first adhesion agent layer 11a and the internal coated layer 12, and the adhesion strength between the second adhesion agent layer 11b and the outer covering layer 13.
Teflon of the present invention, refer to fluorine-containing polymer, for example, polyvinyl fluoride (Polyvinyl fluoride, PVF), Kynoar (Polyvinylidene fluoride, PVDF), polytrifluorochloroethylene (Polychlorotrifluorethylene, PCTFE), polytetrafluoroethylene (polytetrafluorethylene, PTFE) or the copolymer of tetrafluoroethene and ethene (ETFE), and take the copolymer of polytetrafluoroethylene and tetrafluoroethene and ethene as good, promote moisture obstruction with this.
The first adhesion agent layer among the present invention and the thickness of the second adhesion agent layer are respectively done for oneself 10 to 50 microns.
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
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 large about 1.8g/m
2More than-the sky, solar cell backboard structure of the present invention can reduce the aqueous vapor penetrance significantly to 1.1g/m
2-day, have excellent anti-aqueous vapor effect.
The material core is aluminium sheet in No. 201041150 Taiwan patent, but skin is the PET material, and through environmental change, weather does not change, do not have anti-UV, do not have waterproof and choke texts, compared to this, the present invention uses the composite membrane weatherability that contains Teflon very good, and the anti-UV characteristic of tool, very good to the atmosphere choke effect that blocks water, can long-term storage in atmospheric environment, can not produce cracking and change.
Claims (10)
1. solar cell backboard structure, it is characterized in that: be provided with core layer, the first adhesion agent layer, the second adhesion agent layer, internal coated layer and outer covering layer, described internal coated layer and described outer covering layer are all the composite membrane of being made by polyimides and Teflon, described core layer has relative upper and lower surface, described internal coated layer adheres to described core layer upper surface by the first adhesion agent layer, and described outer covering layer adheres to described core layer lower surface by the second adhesion agent layer.
2. solar cell backboard structure according to claim 1, it is characterized in that, the described composite membrane of being made by polyimides and Teflon be by polyimide film and Teflon film fit the institute consist of, the Teflon film of described internal coated layer is positioned at the polyimide film upper surface, and the Teflon film of described outer covering layer is positioned at the polyimide film lower surface.
3. solar cell backboard structure according to claim 1 is characterized in that, the described composite membrane of being made by polyimides and Teflon is the co-extruded films of polyimides and Teflon.
4. solar cell backboard structure according to claim 1 is characterized in that, described core layer is polymer material layer.
5. solar cell backboard structure according to claim 4 is characterized in that, described core layer is the polyethylene terephthalate layer.
6. solar cell backboard structure according to claim 2 is characterized in that, the thickness of described polyimide film and Teflon film is all 12 to 50 microns.
7. solar cell backboard structure according to claim 1 is characterized in that, the thickness of described core layer is 75 to 275 microns.
8. solar cell backboard structure according to claim 1 is characterized in that, the thickness of described internal coated layer is 24 to 100 microns.
9. solar cell backboard structure according to claim 1 is characterized in that, the thickness of described outer covering layer is 24 to 100 microns.
10. solar cell backboard structure according to claim 1 is characterized in that, described internal coated layer is identical with described outer covering layer thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188759.3A CN102867868B (en) | 2011-07-07 | 2011-07-07 | Solar cell back plate structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188759.3A CN102867868B (en) | 2011-07-07 | 2011-07-07 | Solar cell back plate structure |
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| CN102867868A true CN102867868A (en) | 2013-01-09 |
| CN102867868B CN102867868B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110188759.3A Expired - Fee Related CN102867868B (en) | 2011-07-07 | 2011-07-07 | Solar cell back plate structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104723581A (en) * | 2015-03-19 | 2015-06-24 | 南通凯英薄膜技术有限公司 | Preparation method of fluorine layer-containing polyimide composite material and equipment for method |
| CN106626574A (en) * | 2016-12-05 | 2017-05-10 | 纳晶科技股份有限公司 | Organic barrier film, quantum dot film, backlight module and light emitting device |
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| CN101350370A (en) * | 2008-09-18 | 2009-01-21 | 杭州福斯特热熔胶膜有限公司 | Backboard material for solar cell assembly |
| CN201387885Y (en) * | 2009-04-22 | 2010-01-20 | 常熟市冠日新材料有限公司 | Insulated backplane for solar photovoltaic components |
| CN101847667A (en) * | 2010-01-06 | 2010-09-29 | 湖南寰球太阳能技术开发有限公司 | Special back seal film for solar cell |
| WO2010126000A1 (en) * | 2009-04-27 | 2010-11-04 | ダイキン工業株式会社 | Solar cell module and back sheet therefor |
| TW201041150A (en) * | 2009-05-14 | 2010-11-16 | Nexpower Technology Corp | Solar cell back plate structure |
| CN102097591A (en) * | 2010-11-16 | 2011-06-15 | 福建钧石能源有限公司 | Flexible thin film solar cell |
| CN202174782U (en) * | 2011-07-07 | 2012-03-28 | 昆山雅森电子材料科技有限公司 | Back panel structure for solar battery |
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2011
- 2011-07-07 CN CN201110188759.3A patent/CN102867868B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350370A (en) * | 2008-09-18 | 2009-01-21 | 杭州福斯特热熔胶膜有限公司 | Backboard material for solar cell assembly |
| CN201387885Y (en) * | 2009-04-22 | 2010-01-20 | 常熟市冠日新材料有限公司 | Insulated backplane for solar photovoltaic components |
| WO2010126000A1 (en) * | 2009-04-27 | 2010-11-04 | ダイキン工業株式会社 | Solar cell module and back sheet therefor |
| TW201041150A (en) * | 2009-05-14 | 2010-11-16 | Nexpower Technology Corp | Solar cell back plate structure |
| CN101847667A (en) * | 2010-01-06 | 2010-09-29 | 湖南寰球太阳能技术开发有限公司 | Special back seal film for solar cell |
| CN102097591A (en) * | 2010-11-16 | 2011-06-15 | 福建钧石能源有限公司 | Flexible thin film solar cell |
| CN202174782U (en) * | 2011-07-07 | 2012-03-28 | 昆山雅森电子材料科技有限公司 | Back panel structure for solar battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104723581A (en) * | 2015-03-19 | 2015-06-24 | 南通凯英薄膜技术有限公司 | Preparation method of fluorine layer-containing polyimide composite material and equipment for method |
| CN104723581B (en) * | 2015-03-19 | 2017-10-10 | 南通凯英薄膜技术有限公司 | The preparation method and apparatus for the method for fluorine-containing layer composite polyimide material |
| CN106626574A (en) * | 2016-12-05 | 2017-05-10 | 纳晶科技股份有限公司 | Organic barrier film, quantum dot film, backlight module and light emitting device |
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| CN102867868B (en) | 2015-07-22 |
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