CN203423206U - Solar cell back sheet and solar cell module - Google Patents
Solar cell back sheet and solar cell module Download PDFInfo
- Publication number
- CN203423206U CN203423206U CN201320493124.9U CN201320493124U CN203423206U CN 203423206 U CN203423206 U CN 203423206U CN 201320493124 U CN201320493124 U CN 201320493124U CN 203423206 U CN203423206 U CN 203423206U
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- solar cell
- weather
- cell backboard
- proof
- thickness
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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 discloses a solar cell back sheet. The solar cell back sheet comprises a base layer, and particularly, further comprises a weather-resistant outer coating and a weather-resistant inner coating arranged on the upper and lower surface of the base layer, respectively. According to the solar cell back sheet, the weather-resistant coatings are directly formed on the two surfaces of the base material, the weather-resistant outer coating (contacting with air) is used for protecting the base material and bonding with silica gel to protecting a terminal box. The weather-resistant inner coating protects the base material, and is used for bonding with a packaging film layer (an EVA packaging film or a packaging film of other type). The solar cell back sheet provided by the utility model has the advantages of good water-resistant performance, high reflecting rate, easiness in component maintenance, high thermal conductivity, excellent flame retardance, low cost and good cost performance, being suitable for population.
Description
Technical field
The utility model relates to a kind of solar module, relate in particular to a kind of high-weatherability that has, high reliability, and with silicon rubber sealant, encapsulating material EVA and TPO or other kind packaging adhesive films, acrylics, silica type, polyurethanes encapsulating material have high-adhesion, the solar cell backboard that cost performance is high.
Background technology
Solar module is a laminated construction normally, mainly comprises the glassy layer, EVA encapsulated layer, silicon chip, EVA encapsulated layer and the solar cell backboard that set gradually, and wherein silicon chip is by two-layer EVA glued membrane sealed envelope.Solar cell backboard Main Function is the mechanical strength that improves solar panel, prevents that water vapor permeable is in sealant, affects life-span and the generating efficiency of cell piece, and electrical apparatus insulation prevents the infringement of ultraviolet ray to protected material.Due to the outermost of solar cell backboard at solar module, require backboard to there is good anti-environmental attack, thereby the solar cell backboard of manufacturing must have good wet and heat ageing resistant, high temperature resistant, hydrolysis, decay resistance, and resist solar radiation ability, good electrical isolation capabilities.
In prior art, solar cell backboard is mainly by the fluorine-contained film of 15～30 micron thick, and the PET basic unit that 125～300mm is thick and the PE of 25～100 micron thick or EVA or polyolefin film trilamellar membrane material are composited by gluing the connecing of 5～20 microns.This backboard has following shortcoming: the thicker heat transfer efficiency of backboard integral body is poor, the low cell power generation efficiency that affects of reflecting rate, and assembly is reprocessed difficulty, and PE or EVA film or polyolefm film layer long-term ageing weatherability are poor.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides that a kind of thermal conductivity is high, reflecting rate is high, and assembly is reprocessed easily, cost performance is higher, the novel solar battery backboard that resisting ageing for long time performance is good.
For solving above technical problem, a kind of technical scheme that the utility model adopts is:
, it comprises basic unit, particularly, described solar cell backboard also comprises weather-proof outer coating and the weather-proof internal layer coating on two up and down that is respectively formed at basic unit.
According to the utility model, the thickness of described basic unit can be 10～500 microns; The thickness of weather-proof outer coating can be 0.1～40 micron; The thickness of weather-proof internal layer coating can be 0.1～30 micron.Further preferably, the thickness of basic unit is 200～300 microns; The thickness of weather-proof outer coating is 13～25 microns; The thickness of weather-proof internal layer coating is 3～7 microns.The thickness of typical weather-proof outer coating is 20 microns, and the thickness of typical weather-proof internal layer coating is 5 microns.Be to compare between 25-35 micron with prior art backboard floating coat thickness, the utility model, in guaranteed performance, reduces coating material use amount, and cost performance improves.
Preferably, WeiPET basic unit of described basic unit.
Further, described weather-proof outer coating can be in polyflon, daiflon, thermoplastic fluorine-containing resin, acrylic resin, polyurethane resin, polyamide, epoxy resin, silicone rubber resina a kind ofly or wherein several forms.The resin that forms weather-proof outer coating can be thermoplastics type or cross-linking type, is not particularly limited.
Further, described weather-proof internal layer coating can be in polyflon, daiflon, thermoplastic fluorine-containing resin, acrylic resin, polyurethane resin, polyamide, epoxy resin, silicone rubber resina a kind ofly or wherein several forms.The resin that forms weather-proof internal layer coating can be thermoplastics type or cross-linking type, is not particularly limited.
According to the utility model, the formation of weather-proof outer coating and the internal layer of resistance to marquis coating can be identical or different, is not particularly limited.
Preferably, the thickness of described weather-proof outer coating is greater than the thickness of weather-proof internal layer coating.More preferably, the thickness of weather-proof outer coating is 1.3～10 times of weather-proof internal layer coating layer thickness.
According to a preferred aspect of the present utility model, described weather-proof outer coating, the color of weather-proof internal layer coating are opaque black, transparent black, opaque white color, transparent whites or clear, colorless independently
The another technical scheme that the present invention takes is: a kind of solar module, it includes above-mentioned solar cell backboard, wherein, the weather-proof internal layer coating of solar cell backboard is combined with the encapsulation material of solar module, the weather-proof outer coating of solar cell backboard be positioned at solar module outermost, contact with air.
Due to the enforcement of above technical scheme, the utility model compared with prior art tool has the following advantages:
Solar cell backboard of the present utility model is to be coated with weathering resistance coatings in the structure ，Qi basic unit of three layers, makes it possible to reduce the thickness of solar cell backboard, improves heat transfer efficiency and light reflection efficiency, assembly is reprocessed and become different, and weather resistance is better.
Accompanying drawing explanation
Fig. 1 is the structural representation according to solar cell backboard of the present utility model;
Fig. 2 is the structural representation according to solar module of the present utility model;
Wherein: 1, basic unit; 2, weather-proof outer coating; 3, the internal layer of resistance to marquis coating; 5,7, EVA encapsulated layer; 6. cell piece; 8, glass.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of can make that thermal conductivity is high, reflecting rate is high, easily reprocess, the good solar cell backboard of the good fire resistance of weather resistance.
Referring to Fig. 1, solar cell backboard of the present utility model is three-decker, comprises and sets gradually weather-proof outer coating 2 from top to bottom, basic unit 1 and weather-proof internal layer coating 3, wherein: weather-proof outer coating 2, weather-proof internal layer coating 3 is directly coated on two upper coatings that form up and down of basic unit 1.
1 WeiPET basic unit of Ben Lizhong， basic unit, its thickness can be 10～500 microns, and preferred thickness is 200～300 millis, and concrete thickness can be 250 microns, 300 microns etc.
In this example, weather-proof outer coating 2 is polytetrafluoroethylene (PTFE) base coating, and it can also select polytrifluorochloroethylene base coating, also can be chosen as acrylic resin-based coating; Can be cross-linking type or thermoplastics type.The thickness of weathering resistance coatings 2 can be 0.1～40 micron, and preferred thickness is 13～25 microns, and concrete thickness can be 13 microns, 15 microns, 18 microns, 20 microns, 25 microns etc.
Weather-proof internal layer coating 3 is polytetrafluoroethylene (PTFE) base coating, and it can also select polytrifluorochloroethylene base coating, also can be chosen as acrylic resin-based coating; Can be cross-linking type or thermoplastics type.The thickness of weather-proof internal layer coating 3 can be 0.1～30 micron, and preferred thickness is 3～7 microns, and concrete thickness can be 3 microns, 5 microns, 7 microns, 8 microns, 10 microns etc.
Referring to Fig. 2, solar module is assembled and obtained to above-mentioned solar cell backboard and cell piece 6, EVA encapsulated layer 5,7 and glass 8 according to the order of Fig. 2.
Solar cell backboard of the present utility model has high reflecting rate (77%-90%) and high thermal conductivity (0.322W/mK), excellent weather resisteant (UV-60kwh, △ b=0.5), reprocesses performance good, noresidue.By contrast, the reflecting rate of traditional solar cell backboard only can reach (70%-82%), and (0.248W/mK) is lower for thermal conductivity, and weatherability poor (UV-60kwh, △ b=2.5), reprocesses difficulty, and polyolefin eva film layer has residual.
To sum up, product of the present utility model has good weather resistance, and high reflecting rate is easy to assembly and reprocesses, and heat transfer efficiency has lower production cost simultaneously well, is easy to marketing.
Above the utility model is described in detail; its object is to allow the personage who is familiar with this art can understand content of the present utility model and be implemented; can not limit protection range of the present utility model with this; all equivalences of doing according to Spirit Essence of the present utility model change or modify, and all should be encompassed in protection range of the present utility model.
Claims (10)
1. a solar cell backboard, comprises basic unit (1), it is characterized in that: described solar cell backboard also comprises weather-proof outer coating (2) and the weather-proof internal layer coating (3) on two up and down that is respectively formed at described basic unit (1).
2. solar cell backboard according to claim 1, is characterized in that: the thickness of described basic unit (1) is 10～500 microns; The thickness of described weather-proof outer coating (2) is 0.1～40 micron; The thickness of described weather-proof internal layer coating (3) is 0.1～30 micron.
3. solar cell backboard according to claim 1 and 2, is characterized in that: WeiPET basic unit of described basic unit (1).
4. solar cell backboard according to claim 1 and 2, is characterized in that: a kind of in polyflon, daiflon, thermoplastic fluorine-containing resin, acrylic resin, polyurethane resin, polyamide, epoxy resin, silicone rubber resina forms described weather-proof outer coating (2).
5. solar cell backboard according to claim 1 and 2, is characterized in that: a kind of in polyflon, daiflon, thermoplastic fluorine-containing resin, acrylic resin, polyurethane resin, polyamide, epoxy resin, silicone rubber resina forms described weather-proof internal layer coating (3).
6. solar cell backboard according to claim 1, is characterized in that: described weather-proof outer coating (2) is identical or different with the formation of described lower resistance to marquis's coating.
7. according to the solar cell backboard described in claim 1 or 2 or 6, it is characterized in that: the thickness of described weather-proof outer coating (2) is greater than the thickness of described weather-proof internal layer coating (3).
8. solar cell backboard according to claim 7, is characterized in that: the thickness of described weather-proof outer coating (2) is 1.3～10 times of described weather-proof internal layer coating (3) thickness.
9. solar cell backboard according to claim 1, is characterized in that: described weather-proof outer coating (2), the color of weather-proof internal layer coating (3) are opaque black, transparent black, opaque white color, transparent whites or clear, colorless independently.
10. a solar module, it is characterized in that: include the solar cell backboard described in any one claim in claim 1～9, wherein, the weather-proof internal layer coating (3) of solar cell backboard is combined with the encapsulation material of solar module, the weather-proof outer coating (2) of solar cell backboard be positioned at solar module outermost, contact with air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320493124.9U CN203423206U (en) | 2013-08-13 | 2013-08-13 | Solar cell back sheet and solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320493124.9U CN203423206U (en) | 2013-08-13 | 2013-08-13 | Solar cell back sheet and solar cell module |
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| Publication Number | Publication Date |
|---|---|
| CN203423206U true CN203423206U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320493124.9U Expired - Lifetime CN203423206U (en) | 2013-08-13 | 2013-08-13 | Solar cell back sheet and solar cell module |
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| CN (1) | CN203423206U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134715A (en) * | 2014-08-11 | 2014-11-05 | 中天光伏材料有限公司 | Black heat dissipation solar cell backboard for building installation type photovoltaic module |
| CN104409544A (en) * | 2014-11-14 | 2015-03-11 | 无锡中洁能源技术有限公司 | Double-sided epoxy resin solar panels back film and preparation method thereof |
| CN105990459A (en) * | 2015-02-28 | 2016-10-05 | 汉能新材料科技有限公司 | Flexible package composite film and manufacturing method thereof |
| CN108767039A (en) * | 2018-07-04 | 2018-11-06 | 南通沃特光电科技有限公司 | A kind of photovoltaic battery panel and preparation method thereof |
| CN108878564A (en) * | 2018-07-04 | 2018-11-23 | 南通沃特光电科技有限公司 | A kind of solar cell module and preparation method thereof |
| CN108899385A (en) * | 2018-07-04 | 2018-11-27 | 南通沃特光电科技有限公司 | A kind of photovoltaic module and preparation method thereof |
| CN112909113A (en) * | 2021-01-29 | 2021-06-04 | 浙江中聚材料有限公司 | Transparent back plate for solar cell module and preparation process thereof |
-
2013
- 2013-08-13 CN CN201320493124.9U patent/CN203423206U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134715A (en) * | 2014-08-11 | 2014-11-05 | 中天光伏材料有限公司 | Black heat dissipation solar cell backboard for building installation type photovoltaic module |
| CN104409544A (en) * | 2014-11-14 | 2015-03-11 | 无锡中洁能源技术有限公司 | Double-sided epoxy resin solar panels back film and preparation method thereof |
| CN105990459A (en) * | 2015-02-28 | 2016-10-05 | 汉能新材料科技有限公司 | Flexible package composite film and manufacturing method thereof |
| CN108767039A (en) * | 2018-07-04 | 2018-11-06 | 南通沃特光电科技有限公司 | A kind of photovoltaic battery panel and preparation method thereof |
| CN108878564A (en) * | 2018-07-04 | 2018-11-23 | 南通沃特光电科技有限公司 | A kind of solar cell module and preparation method thereof |
| CN108899385A (en) * | 2018-07-04 | 2018-11-27 | 南通沃特光电科技有限公司 | A kind of photovoltaic module and preparation method thereof |
| CN108767039B (en) * | 2018-07-04 | 2020-10-30 | 绍兴越元科技有限公司 | Photovoltaic cell panel and preparation method thereof |
| CN112909113A (en) * | 2021-01-29 | 2021-06-04 | 浙江中聚材料有限公司 | Transparent back plate for solar cell module and preparation process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215200, Wujiang economic and Technological Development Zone, Suzhou, Jiangsu Province, No. 369, Hong Kong Road, Tianjin Road Patentee after: CYBRID TECHNOLOGIES Inc. Address before: 215200, Wujiang economic and Technological Development Zone, Suzhou, Jiangsu Province, No. 369, Hong Kong Road, Tianjin Road Patentee before: CYBRID TECHNOLOGIES Inc. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |
|
| CX01 | Expiry of patent term |