CN101992572A - Insulating back plate for solar photovoltaic component - Google Patents
Insulating back plate for solar photovoltaic component Download PDFInfo
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- CN101992572A CN101992572A CN 201010270141 CN201010270141A CN101992572A CN 101992572 A CN101992572 A CN 101992572A CN 201010270141 CN201010270141 CN 201010270141 CN 201010270141 A CN201010270141 A CN 201010270141A CN 101992572 A CN101992572 A CN 101992572A
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- solar photovoltaic
- insulating back
- photovoltaic assembly
- electric insulation
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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 an insulating back plate for a solar photovoltaic component and belongs to the technical field of solar photovoltaic cells. The solar photovoltaic component comprises a weather-resistant layer, an electric insulating layer and a thermal bonding layer, wherein the electric insulating layer is positioned between the weather-resistant layer and the thermal bonding layer; the weather-resistant layer is made from a mixture of polyvinylidene fluoride, acrylic resin and an inorganic material; the electric insulating layer is made from polyethylene glycol terephthalate and poly2,6-naphthalate or polyamide; and the thermal bonding layer is made from polyolefin. In the technical scheme, because the weather-resistant layer made from the polyvinylidene fluoride and the inorganic material in the prior art is modified into the weather-resistant layer made from the polyvinylidene fluoride, the acrylic resin and the inorganic material, and the acrylic resin and the polyvinylidene fluoride have high compatibility, the water vapor barrier effect and the ultraviolet resistance are enhanced and the service life of the solar photovoltaic component is guaranteed. Because the materials of the provided scheme are readily available and the cost of the insulating back plate is low, the insulating back plate can get away from the dependence on import and meets the requirement of industrialized mass production.
Description
Technical field
The invention belongs to the solar-energy photo-voltaic cell technical field, be specifically related to a kind of solar photovoltaic assembly insulating back panel.
Background technology
As the industry's knowledge of the reason, the overall structure of solar-energy photo-voltaic cell comprises: framework (using the aluminium frame usually), be installed on solar energy photovoltaic glass on the framework, be positioned at battery sheet (also claiming silicon chip or silicon plate), hot melt adhesive layer (EVA layer), terminal box and the insulating back panel of solar energy photovoltaic glass below.Because it is outdoor that solar photovoltaic assembly is installed in usually, therefore require insulating back panel to have remarkable weatherability undoubtedly.
Known structure about insulating back panel has been done detailed introduction by the background technology hurdle of publication document such as CN101582458A and CN101582459A, and be known to the public by the open of the following patent documentation that is not limited to, the solar photovoltaic assembly insulating back panel that A. Granted publication CN201387885Y recommends; The insulating back panel that is used for solar photovoltaic assembly that B.CN201387887Y introduces; C. the four-layer structure back board of solar cell of the minimizing adhesive linkage that discloses of publication number CN101615636A; D. the novel solar battery backboard that provides of publication number CN101431108A, or the like.
Conclude, constitute by upper and lower weathering layer and the electric insulation layer between upper and lower weathering layer, more particularly, combining with the weathering layer on top by adhesive layer of electric insulation layer towards a last side surface, and electric insulation layer towards under a side surface combine with the weathering layer of bottom by corresponding adhesive layer equally.From cross-section structure, be followed successively by weathering layer, adhesive layer (also claiming adhesive layer), electric insulation layer, adhesive layer (also claiming adhesive layer) and weathering layer from top to bottom, promptly on macrostructure, constitute five-layer structure.
Not ccontaining doubting, the weathering layer that is positioned at the electric insulation layer both sides is to the good and bad decisive role of the quality of insulating back panel, in the prior art, that produce and polyvinyl fluoride thin film that have patent has monopolized the used material market of weathering layer that is used to constitute insulating back panel basically by E.I.Du Pont Company, and price is enough to make ordinary enterprises to be stepped back.In view of this, the many enterprises of China are all at the film as weathering layer of being devoted to develop the high-quality cheapness based on the autonomous height of industry, but have not only seen up to now but also heard that the report that obtains substantive breakthroughs was arranged.Especially still lack referential technology enlightenment in the disclosed foreign literature.For example US3133854, US513989 and US6632518 have all introduced pre-priming operation or fluorine carbon material tack coat on the base material of PET (PETG) and so on, to obtain the lamination backboard of endurance quality excellence, but the technology that patent is introduced is very loaded down with trivial details and harsh, and can not reach the degree that people get institute's phase according to the backboard that obtains of patented technology introduction to the barriering effect of steam, and the bonding strength between the encapsulating material is low.
" is the solar cell backboard (being insulating back panel) of weathering protective layer with the modified polyvinilidene fluoride alloy " that " novel solar battery backboard (being insulating back panel) " that aforementioned CN101582458A discloses and CN101582459A provide all introduced with Kynoar and inorganic matter (inorganic filler) and constituted weathering layer, as the insulating back panel of solar photovoltaic assembly, wherein: first, second weathering layer of CN101582459A is inorganic material-modified polyvinylidene fluoride alloy layer; And CN101582458A will use the heat bonding reflecting layer of being filled the post of by white polyethylene with respect to the former second weathering layer.But; because Kynoar is from very easily being orientated when film forming; and the decomposition of Kynoar is quickened in the inorganic filler of being added easily; and the compatibility of inorganic filler and Kynoar is fragile (shortcoming) comparatively; so the weathering layer as protectiveness that these two patent application schemes obtain is prone to the situation that out-phase is separated in use for some time; thereby cause the protective value of insulating back panel to lose efficacy, and then the service life of bringing disaster to solar photovoltaic assembly.
In view of the existing shortcoming of above-mentioned prior art, the applicant has carried out good try, and technical scheme described below produces under this background.
Summary of the invention
Task of the present invention is to provide a kind of and can promotes compatibility between inorganic filler and the Kynoar effectively and use and improve water vapor rejection effect and the UV resistant performance solar photovoltaic assembly insulating back panel with service life of ensureing solar photovoltaic assembly.
Task of the present invention is finished like this, a kind of solar photovoltaic assembly insulating back panel, comprise weathering layer, electric insulation layer and thermal adhesive layer, electric insulation layer is between weathering layer and thermal synthesis layer, and described weathering layer is the mixture of polyvinylidene fluoride, acrylic resin and inorganic material; Described electric insulation layer is PETG, gathers 2,6-naphthalenedicarboxylic acid second diester or polyamide; Described thermal adhesive layer is a polyolefin.
In a specific embodiment of the present invention, the thickness of described weathering layer is 5-50 μ m; The thickness of described electric insulation layer is 100-350 μ m; And the thickness of described thermal adhesive layer is 50-200 μ m.
In another specific embodiment of the present invention, the number of plies of described weathering layer is 1 layer, 2 layers or 3 layers.
In another specific embodiment of the present invention, the parts by weight of described polyvinylidene fluoride, acrylic resin and inorganic material are respectively 20-80 part, 10-50 part and 1-30 part.
In another specific embodiment of the present invention, described acrylic resin is any one polymer or the copolymer in methyl methacrylate, butyl methacrylate, ethyl acrylate and the propylene ester butyl ester.
Also have in the specific embodiment of the present invention, described acrylic resin is a polymethyl methacrylate.
More of the present invention and in specific embodiment, described inorganic material is titanium dioxide or carbon black.
In of the present invention and then specific embodiment, described electric insulation layer is a PETG.
Of the present invention again more and in specific embodiment, described weathering layer combines with a side surface of described electric insulation layer by first adhesive layer, and described thermal adhesive layer combines with the opposite side surface of described electric insulation layer by second adhesive layer, and described polyolefin is an ethene polymers.
In again of the present invention and then specific embodiment, described first, second adhesive layer is polyurethane binder or acryloid cement.
Technical scheme provided by the invention is owing to change into by polyvinylidene fluoride, acrylic resin and inorganic material and constituting constituting weathering layer by Kynoar and inorganic filler in the prior art, because acrylic resin and polyvinylidene fluoride have good compatibility, thereby can promote water vapor rejection effect and UV resistant performance, ensure the service life of solar photovoltaic assembly; The scheme material that provides is easy to get, and insulating back panel is with low cost, not only can break away from dependence on import, and can satisfy the industrial amplification production requirement.
Description of drawings
Fig. 1 is the sectional structure chart of solar photovoltaic assembly of the present invention with insulating back panel.
Fig. 2 is the first example structure figure of weathering layer shown in Figure 1.
Fig. 3 is the second example structure figure of weathering layer shown in Figure 1.
The specific embodiment
Embodiment 1:
Ask for an interview Fig. 1, the solar photovoltaic assembly that provides comprise weathering layer 1, thermal adhesive layer 5 with insulating back panel and be incorporated into weathering layer 1 and thermal adhesive layer 5 between electric insulation layer 3, wherein: electric insulation layer 3 combines (adhesive bond) with weathering layer 1 by first adhesive layer 2 towards the surface of a side of weathering layer 1, and electric insulation layer 3 towards the surface of a side of thermal adhesive layer 5 by second adhesive phase 4 combine with thermal adhesive layer 5 (adhesive bond).That is to say that electric insulation layer 3 passes through first, second adhesive phase 2,4 adhesive bond between weathering layer 1 and thermal adhesive layer 5.
In the present embodiment, the thickness of weathering layer 1 is 6 μ m, and the thickness of electric insulation layer 3 is 100 μ m, and the thickness of thermal adhesive layer 5 is 52 μ m, and weathering layer 1 is a single layer structure.Wherein: the material of weathering layer 1 is made of the raw material of following parts by weight: 80 parts of polyvinylidene fluoride, 20 parts of acrylic resins, 28 parts of inorganic material.Acrylic resin is a polymethyl methacrylate, and inorganic material is a titanium dioxide.The material of aforesaid electric insulation layer 3 is a PETG, and the material of aforesaid first, second adhesive layer 2,4 is polyurethane binder, and the material of aforesaid thermal adhesive layer 5 is a polyethylene.
With 80 parts of aforesaid polyvinylidene fluoride, after 28 parts of 20 parts of polymethyl methacrylates and titanium dioxide mix, by the screw extruder extruding pelletization, make titanium dioxide can be evenly dispersed in the resin as pigment, be that The tape casting makes the film as weathering layer 1 that thickness is 6 μ m with resin by extruding casting technique then, after sided corona treatment, pass through aforesaid first again, second adhesive layer 2,4 with thickness to be that the electric insulation layer 3 of 100 μ m and thermal adhesive layer that thickness is 52 μ m 5 are implemented dry types compound, rolling obtains the solar photovoltaic assembly insulating back panel of structure shown in Figure 1.
Embodiment 2:
The thickness of weathering layer 1 is 50 μ m, changes the thickness of electric insulation layer 3 into 250 μ m; Change the parts by weight that constitute polyvinylidene fluoride, acrylic resin and the inorganic material of weathering layer 1 into 20 parts, 12 parts and 1 part respectively, wherein: acrylic resin uses polybutyl methacrylate, and inorganic material is used carbon black; The material of first, second adhesive layer 2,4 is all used acryloid cement, and the material of electric insulation layer 3 uses and gathers 2,6-naphthalenedicarboxylic acid second diester, and the material of thermal adhesive layer 5 changes polypropylene into, and thickness changes 120 μ m into.All the other are all with the description to embodiment 1.
Embodiment 3:
Change the thickness of weathering layer 1 into 30 μ m, change the thickness of electric insulation layer 3 into 180 μ m, the material of electric insulation layer 3 uses polyamide; Change the parts by weight that constitute polyvinylidene fluoride, acrylic resin and the inorganic material of weathering layer 1 into 65 parts, 55 parts and 28 parts respectively, wherein: acrylic resin uses polybutyl methacrylate, thermal adhesive layer 5 is used ethylene-vinyl acetate, and thickness is 198 μ m.All the other are all with the description to embodiment 1.
Embodiment 4:
Change the thickness of weathering layer 1 into 18 μ m, change the thickness of electric insulation layer 3 into 350 μ m, change the parts by weight that constitute polyvinylidene fluoride, acrylic resin and the inorganic material of weathering layer 1 into 40 parts, 30 parts and 15 parts respectively, wherein: acrylic resin is the copolymer of butyl acrylate (15 parts) and methyl methacrylate (15 parts), it is the mixture that constitutes at 1: 1 by weight that the material of thermal adhesive layer 5 is used instead by polyethylene and ethylene-vinyl acetate, and thickness is 120 μ m.All the other are all with the description to embodiment 1.
Embodiment 5:
Ask for an interview Fig. 2, weathering layer 1 is a three-layer composite structure, and thickness is identical, thickness that present embodiment is selected is 45 μ m, by first, second, the 3rd composite bed 11,12,13 compound each other backs constitute weathering layer 1, this first, second, the 3rd composite bed 11,12, in 13, has one deck composite bed at least for containing fluorine film, the material that promptly has one deck at least is a polyvinylidene fluoride, the mixture of propylene esters resin and inorganic material, all the other two-layer materials then both can be polyvinylidene fluoride, also can be polyvinylidene fluoride, the mixture of acrylic resin and inorganic material can also be with first, second, the 3rd composite bed 11,12,13 all use aforesaid polyvinylidene fluoride, the mixture of acrylic resin and inorganic material.The thickness of first, second, third composite bed 11,12,13 respectively is 15 μ m.All the other are all with the description to embodiment 1.
Embodiment 6:
Ask for an interview Fig. 3, weathering layer 1 is a two layer composite structure, and thickness is identical, the thickness that present embodiment is selected is 20 μ m, by first, second composite bed 11,12 compound each other backs constitute first weathering layer 1, first, second composite bed 11, the material that one deck should be arranged in 12 is for containing fluorine film, the material that one deck promptly must be arranged is a polyvinylidene fluoride, the mixture of acrylic resin and inorganic material, but also can make first, second composite bed 11,12 material all uses polyvinylidene fluoride, the mixture of acrylic resin and inorganic material, wherein, first, second composite bed 11,12 thickness respectively is 10 μ m, and all the other are all with the description to embodiment 5.
Claims (10)
1. solar photovoltaic assembly insulating back panel, comprise weathering layer, electric insulation layer and thermal adhesive layer, electric insulation layer is characterized in that described weathering layer is the mixture of polyvinylidene fluoride, acrylic resin and inorganic material between weathering layer and thermal synthesis layer; Described electric insulation layer is PETG, gathers 2,6-naphthalenedicarboxylic acid second diester or polyamide; Described thermal adhesive layer is a polyolefin.
2. solar photovoltaic assembly insulating back panel according to claim 1, the thickness that it is characterized in that described weathering layer are 5-50 μ m; The thickness of described electric insulation layer is 100-350 μ m; And the thickness of described thermal adhesive layer is 50-200 μ m.
3. solar photovoltaic assembly insulating back panel according to claim 1 and 2, the number of plies that it is characterized in that described weathering layer are 1 layer, 2 layers or 3 layers.
4. solar photovoltaic assembly insulating back panel according to claim 1 is characterized in that the parts by weight of described polyvinylidene fluoride, acrylic resin and inorganic material are respectively 20-80 part, 10-50 part and 1-30 part.
5. according to claim 1 or 4 described solar photovoltaic assembly insulating back panels, it is characterized in that described acrylic resin is any one polymer or the copolymer in methyl methacrylate, butyl methacrylate, ethyl acrylate and the propylene ester butyl ester.
6. according to claim 1 or 4 described solar photovoltaic assembly insulating back panels, it is characterized in that described acrylic resin is a polymethyl methacrylate.
7. according to claim 1 or 4 described solar photovoltaic assembly insulating back panels, it is characterized in that described inorganic material is titanium dioxide or carbon black.
8. solar photovoltaic assembly insulating back panel according to claim 1 and 2 is characterized in that described electric insulation layer is a PETG.
9. solar photovoltaic assembly insulating back panel according to claim 1, it is characterized in that described weathering layer combines with a side surface of described electric insulation layer by first adhesive layer, and described thermal adhesive layer combines with the opposite side surface of described electric insulation layer by second adhesive layer, and described polyolefin is an ethene polymers.
10. solar photovoltaic assembly insulating back panel according to claim 9 is characterized in that described first, second adhesive layer is polyurethane binder or acryloid cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010270141 CN101992572A (en) | 2010-09-02 | 2010-09-02 | Insulating back plate for solar photovoltaic component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010270141 CN101992572A (en) | 2010-09-02 | 2010-09-02 | Insulating back plate for solar photovoltaic component |
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| CN101992572A true CN101992572A (en) | 2011-03-30 |
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| CN 201010270141 Pending CN101992572A (en) | 2010-09-02 | 2010-09-02 | Insulating back plate for solar photovoltaic component |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544161A (en) * | 2012-02-17 | 2012-07-04 | 常熟市冠日新材料有限公司 | Back plate for metal wrap through (MWT) solar battery |
| CN103102621A (en) * | 2011-11-10 | 2013-05-15 | 电气化学工业株式会社 | Fluoro resin film and solar battery assembly |
| CN103123945A (en) * | 2011-11-21 | 2013-05-29 | 杜邦太阳能有限公司 | Back panel and thin film solar cell |
| CN104465887A (en) * | 2014-12-26 | 2015-03-25 | 苏州幸福新能源科技有限责任公司 | Production process for KPF structure single-face coating backboard |
| US9373495B2 (en) | 2011-11-10 | 2016-06-21 | Denka Company Limited | Fluorine-containing resin film and solar cell module |
| CN106079773A (en) * | 2016-06-16 | 2016-11-09 | 杭州福斯特光伏材料股份有限公司 | A kind of power gain type solar energy back veneer material |
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| US6521825B2 (en) * | 2000-07-03 | 2003-02-18 | Bridgestone Corporation | Backside covering material for a solar cell module and its use |
| CN101582458A (en) * | 2009-06-26 | 2009-11-18 | 上海海优威电子技术有限公司 | Novel solar battery backboard |
| 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 |
| CN101696309A (en) * | 2009-10-13 | 2010-04-21 | 常熟市冠日新材料有限公司 | Fluorine-contained film and preparation method thereof |
| CN201523014U (en) * | 2009-10-23 | 2010-07-07 | 常熟市冠日新材料有限公司 | Insulating back plate of solar energy photovoltaic battery |
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2010
- 2010-09-02 CN CN 201010270141 patent/CN101992572A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6521825B2 (en) * | 2000-07-03 | 2003-02-18 | Bridgestone Corporation | Backside covering material for a solar cell module and its use |
| 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 |
| CN101582458A (en) * | 2009-06-26 | 2009-11-18 | 上海海优威电子技术有限公司 | Novel solar battery backboard |
| CN101696309A (en) * | 2009-10-13 | 2010-04-21 | 常熟市冠日新材料有限公司 | Fluorine-contained film and preparation method thereof |
| CN201523014U (en) * | 2009-10-23 | 2010-07-07 | 常熟市冠日新材料有限公司 | Insulating back plate of solar energy photovoltaic battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102621A (en) * | 2011-11-10 | 2013-05-15 | 电气化学工业株式会社 | Fluoro resin film and solar battery assembly |
| US9373495B2 (en) | 2011-11-10 | 2016-06-21 | Denka Company Limited | Fluorine-containing resin film and solar cell module |
| CN103102621B (en) * | 2011-11-10 | 2017-05-31 | 电化株式会社 | Fluorine resin film and solar cell module |
| CN103123945A (en) * | 2011-11-21 | 2013-05-29 | 杜邦太阳能有限公司 | Back panel and thin film solar cell |
| CN102544161A (en) * | 2012-02-17 | 2012-07-04 | 常熟市冠日新材料有限公司 | Back plate for metal wrap through (MWT) solar battery |
| CN104465887A (en) * | 2014-12-26 | 2015-03-25 | 苏州幸福新能源科技有限责任公司 | Production process for KPF structure single-face coating backboard |
| CN106079773A (en) * | 2016-06-16 | 2016-11-09 | 杭州福斯特光伏材料股份有限公司 | A kind of power gain type solar energy back veneer material |
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Application publication date: 20110330 |