CN205335271U - There is not transparent solar cell back sheet of glue - Google Patents

There is not transparent solar cell back sheet of glue Download PDF

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Publication number
CN205335271U
CN205335271U CN201620028942.5U CN201620028942U CN205335271U CN 205335271 U CN205335271 U CN 205335271U CN 201620028942 U CN201620028942 U CN 201620028942U CN 205335271 U CN205335271 U CN 205335271U
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China
Prior art keywords
transparent
thickness
layer
glue
rete
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CN201620028942.5U
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Chinese (zh)
Inventor
沙锐
杨继明
陈坤
王同心
张宪哲
刘香安
王怀伟
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Zhong Tian Photovoltaic Materials Co Ltd
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Zhong Tian Photovoltaic Materials Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The utility model discloses a there is not transparent solar cell back sheet of glue who reveas, including transparent basic unit, transparent basic unit both sides have coated respectively and have been able to bear or endure to wait clear coat and the resistant transparent film of time layer, wherein adopt transparent non - gluey coating to bond between weatherability transparent film layer and the transparent basic unit, transparent basic unit is ABA three layer construction's coextrusion polyester film, and its thickness is 0.01~3mm, and wherein to be 5~15%, the B layer thickness of transparent basic unit thickness be 70~90% of transparent basic unit thickness to the A layer thickness, anti adhesion packing granule contains in A in situ portion. The utility model discloses a backplate has the characteristics of low cost, the low mist degree of high transmittance.

Description

A kind of glue-free transparent solar cell backboard
Technical field
The present invention relates to a kind of solar cell backboard, be specifically related to a kind of glue-free transparent solar cell backboard。
Background technology
Field of photovoltaic power generation, the efficiency power generation of assembly is always up the trend of technical development, and the appearance of double-side efficient battery, it is possible to it is greatly promoted the generated energy of assembly。In traditional components, the main flow of Normal back plate occuping market all the time, and the appearance of solar double-glass assemblies, expand the application in field of photovoltaic power generation of the double-side efficient battery so that photovoltaic generating electricity on two sides becomes possibility。But the optical attenuation problem that solar double-glass assemblies exists fragment rate height, overall weight is big, tradition stratum platen press efficiency is low and serious, this also constrains its application to a certain extent simultaneously。
Therefore occur in that a kind of transparent back panel then well avoids the problems referred to above so that it is at BIPV, glass curtain wall, and greenhouse greenhouse and highway, railway, airport etc. need to use the advantage with uniqueness under the environment of strict anti-dazzle。Transparent back panel except the mechanical property of Normal back plate need to be met, weatherability, outside water vapor transmittance, also need to ensure that there is higher light transmittance and relatively low mist degree, and the resistance to UV aging of excellence。
Conventional transparent back panel, mainly by the transparent fluorine-contained film that two-sided 0.02mm ~ 0.03mm is thick, transparent PET transparent base layer and the uvioresistant glue of 0.001mm ~ 0.03mm thickness that 0.18 ~ 0.30mm is thick are composited。This backboard heat-conducting effect is poor, and the transparent cost of raw material is high, and the backboard transparency of preparation is relatively low, and mist degree is poor, thus largely have impact on the generating efficiency of battery。
Summary of the invention
The problem to be solved in the present invention is to provide a kind of low cost, the glue-free transparent solar cell backboard of high transparency low haze。
For achieving the above object, the technical scheme that the present invention takes is as follows: a kind of glue-free transparent solar cell backboard, including transparent base layer, described transparent base layer both sides have been respectively coated with weather-resisting transparent coating and weather-resisting transparent rete, transparent non-gel coating is adopted to carry out bonding between wherein said weatherability transparent film layer and transparent base layer, described transparent base layer is the coextrusion mylar of ABA three-decker, its thickness is 0.01 ~ 3mm, wherein A layer thickness is the 5 ~ 15% of transparent base layer thickness, B layer thickness is the 70 ~ 90% of transparent base layer thickness, described A layer is internal containing tissue adhesion filler particles。
Described tissue adhesion filler particles is the one in silicon dioxide, calcium phosphate, Kaolin, barium sulfate, PMMA organic filling microgranule, the organic filling microgranule of PS, PMMA coated inorganic microgranule nucleocapsid structure microgranule, and particle size is 1 ~ 6 μm。
Described weather-resisting transparent coating is ether type FEVE copolymeric perfluorocarbon coating, polyflon, daiflon, acrylic resin, polyurethane, epoxy resin, the one in silicone rubber, and its thickness is 0.0001 ~ 0.05mm。
Described weather-resisting transparent rete is modified transparent Teflon rete, modified polytrifluorochloroethylene rete, modified transparent vinyl-TFE copolymer thin film, transparent high durable polyester film, transparent modified polymethyl methacrylate film layer, clear polycarbonate rete, the one of modified transparent polyester rete, its thickness is 0.001 ~ 0.3mm。
Described transparent non-gel coating is amino-alkyl silicane coupling agent, alkylene silane coupler, methacryloxypropyl olefinic silane coupling agent, epoxyhydrocarbyl silane coupler, many sulfur hydrocarbyl si lanes coupling agent, containing the one in season amino-alkyl silicane coupling agent, its thickness is 0.01 ~ 5 μm。
Beneficial effect: the glue-free transparent solar cell backboard of disclosed one, have the advantages that backboard of the present utility model adopts six Rotating fields, by basic unit being designed to ABA three-decker, only inside A layer increase tissue adhesion filler particles make thin film satisfied basis tissue adhesion performance while reduce filler particles make consumption, thus improve transmittance and the mist degree of transparent base layer, and greatly reduce cost。The weather-resisting transparent coating of transparent base layer applied atop has high durable and uvioresistant function, transparent non-gel coating is adopted to substitute conventional macromolecular adhesive, except reducing back plate thickness and improving thermal conductivity, also substantially increase the transparency of backboard, reduce the mist degree of backboard, the application have employed a kind of special construction without polymer bond layer, the thickness of transparent back panel can be reduced, improve the capacity of heat transmission of backboard and improve the transparency of backboard and effectively control the mist degree of backboard, simultaneously prepared transparent components is easier to reprocess, the cost made also has and reduces largely, what the structural design of glue-free backboard also reduced volatile solvent makes consumption, reduce the cost that solvent recovery processes, also more environmental protection。
Accompanying drawing explanation
Fig. 1 is the structural representation of battery back-sheet of the present invention。
Detailed description of the invention
Below in conjunction with the accompanying drawing of the present invention, technical scheme is carried out clear, complete description。
The glue-free transparent solar cell backboard of disclosed one, including transparent base layer 1, described transparent base layer 1 both sides have been respectively coated with weather-resisting transparent coating 2 and weather-resisting transparent rete 3, adopt transparent non-gel coating 5 to carry out bonding between wherein said weatherability transparent film layer 3 and transparent base layer 1。
Particularly, described transparent base layer is ABA three-decker, it is by being not added with the B layer 11 of tissue adhesion filler particles and jointly extruding the A layer 11 being respectively placed in B layer 12 both sides with B layer 12 and collectively form integrated rete, wherein its thickness of B layer 12 is the 70 ~ 90% of transparent base layer, A layer 11 thickness is the 5 ~ 15% of transparent base layer, only in described A layer 11 add tissue adhesion filler particles design greatly reduce masterbatch section make consumption, improve again the transmittance of transparent base layer simultaneously, decrease the mist degree of transparent base layer。
Described transparent base layer thickness is 0.01 ~ 3mm, preferred thickness is 0.2 ~ 0.3mm, optimum thickness is 0.2mm, 0.225mm and 0.25mm, wherein A layer thickness is 0.5 ~ 1500um, preferred thickness is 10 ~ 45um, and optimum thickness is 10um, 20um and 30um, and B layer thickness is 7 ~ 2700um, preferred thickness is 140 ~ 270um, and optimum thickness is 180um, 200um and 230um。
Described tissue adhesion filler particles is the one in silicon dioxide, calcium phosphate, Kaolin, barium sulfate, PMMA organic filling microgranule, the organic filling microgranule of PS, PMMA coated inorganic microgranule nucleocapsid structure microgranule, and particle size is 1 ~ 6 μm。
Described weather-resisting transparent coating is ether type FEVE copolymeric perfluorocarbon coating, polyflon, daiflon, acrylic resin, polyurethane, epoxy resin, one in silicone rubber, its thickness is 0.0001 ~ 0.05um, preferably 0.002 ~ 0.01mm, optimum thickness is 0.002mm, 0.005mm, 0.01mm, 0.015mm, 0.02mm, the THICKNESS CONTROL of the weather-resisting transparent coating in the application can on the basis meeting weatherability in above-mentioned size range, reduce the thickness of backboard, improve the radiating effect of backboard and improve the light transmittance of backboard accordingly, reduce backboard mist degree, fluororine-carbon coating is also easier to reprocess compared to TPO internal layer membrane simultaneously。
Described weather-resisting transparent rete is modified transparent Teflon rete, modified polytrifluorochloroethylene rete, modified transparent vinyl-TFE copolymer thin film, transparent high durable polyester film, transparent modified polymethyl methacrylate film layer, clear polycarbonate rete, the one of modified transparent polyester rete, its thickness is 0.001 ~ 0.3mm, preferred thickness is 0.02 ~ 0.03mm, optimum thickness is 0.02mm, 0.0225mm, 0.025mm, in the application, the thickness of weather-resisting transparent rete is limited to the weatherability requirements that can better meet transparent back panel in above-mentioned size range, can also better control transmittance and the mist degree of backboard, it is well positioned to meet the requirement of existing technique simultaneously。
Described transparent non-gel coating is amino-alkyl silicane coupling agent, alkylene silane coupler, methacryloxypropyl olefinic silane coupling agent, epoxyhydrocarbyl silane coupler, many sulfur hydrocarbyl si lanes coupling agent, containing the one in season amino-alkyl silicane coupling agent, its thickness is 0.01 ~ 5 μm, preferred thickness is 0.1 ~ 1 μm, optimum thickness is 0.25 μm, 0.5 μm, 0.75 μm, 1 μm。
Glue-free transparent solar cell backboard prepared by the present invention has good uvioresistant performance and weather resistance, irradiation 120KWH post yellowing index △ b < 4, double; two 85(85 DEG C, 85%) hydrothermal aging post yellowing index △ b < 4, backboard does not have macromolecular adhesive layer, the thickness of backboard can be reduced, improve backboard thermal conductivity, improve backboard transparency simultaneously, reduce backboard mist degree, also decrease to some degree on cost, backboard adopts what glue-free structural design also reduced volatile solvent to make consumption in addition, reduces the cost also more environmental protection that solvent recovery processes。The use of weathering resistance coatings makes reprocessing of assembly become different, and weather resistance is also more excellent。
Above an embodiment of the invention is described in detail, but described content has been only the preferred embodiment of the invention, it is impossible to be considered the practical range for limiting the invention。All equalizations made according to the invention application range change and improvement etc., all belong within the patent covering scope of the invention。

Claims (5)

1. a glue-free transparent solar cell backboard, it is characterized in that: include transparent base layer, described transparent base layer both sides have been respectively coated with weather-resisting transparent coating and weather-resisting transparent rete, transparent non-gel coating is adopted to carry out bonding between wherein said weatherability transparent film layer and transparent base layer, described transparent base layer is the coextrusion mylar of ABA three-decker, its thickness is 0.01 ~ 3mm, wherein A layer thickness is the 5 ~ 15% of transparent base layer thickness, B layer thickness is the 70 ~ 90% of transparent base layer thickness, and described A layer is internal containing tissue adhesion filler particles。
2. the glue-free transparent solar cell backboard of one according to claim 1, it is characterized in that: described tissue adhesion filler particles is the one in silicon dioxide, calcium phosphate, Kaolin, barium sulfate, PMMA organic filling microgranule, the organic filling microgranule of PS, PMMA coated inorganic microgranule nucleocapsid structure microgranule, and particle size is 1 ~ 6 μm。
3. the glue-free transparent solar cell backboard of one according to claim 1, it is characterized in that: described weather-resisting transparent coating is ether type FEVE copolymeric perfluorocarbon coating, polyflon, daiflon, acrylic resin, polyurethane, epoxy resin, one in silicone rubber, its thickness is 0.0001 ~ 0.05mm。
4. the glue-free transparent solar cell backboard of one according to claim 1, it is characterized in that: described weather-resisting transparent rete is modified transparent Teflon rete, modified polytrifluorochloroethylene rete, modified transparent vinyl-TFE copolymer thin film, transparent high durable polyester film, transparent modified polymethyl methacrylate film layer, clear polycarbonate rete, the one of modified transparent polyester rete, its thickness is 0.001 ~ 0.3mm。
5. the glue-free transparent solar cell backboard of one according to claim 1, it is characterized in that: described transparent non-gel coating is amino-alkyl silicane coupling agent, alkylene silane coupler, methacryloxypropyl olefinic silane coupling agent, epoxyhydrocarbyl silane coupler, many sulfur hydrocarbyl si lanes coupling agent, containing the one in season amino-alkyl silicane coupling agent, its thickness is 0.01 ~ 5 μm。
CN201620028942.5U 2016-01-13 2016-01-13 There is not transparent solar cell back sheet of glue Active CN205335271U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105576064A (en) * 2016-01-13 2016-05-11 中天光伏材料有限公司 Non-adhesive transparent solar cell backing plate
CN108822706A (en) * 2018-05-04 2018-11-16 苏州奥美材料科技有限公司 A kind of weatherability polycarbonate coating film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105576064A (en) * 2016-01-13 2016-05-11 中天光伏材料有限公司 Non-adhesive transparent solar cell backing plate
CN108822706A (en) * 2018-05-04 2018-11-16 苏州奥美材料科技有限公司 A kind of weatherability polycarbonate coating film

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