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A solar battery backplane

A solar cell and backplane technology, applied in the field of solar energy, can solve the problems of low flame retardancy, high heat generation, and poor weather resistance of the backplane, and achieve the effects of simple preparation process, improved flame retardancy, and good flame retardancy

Active Publication Date: 2017-02-01
乐凯胶片股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the weather resistance of the back sheet is poor, it is easy to yellow and make the back sheet brittle, and the back sheet structure is 5 layers, each layer is bonded by adhesive, the production cycle is long, the cost is high, and because the flame retardant grade is not high, there is a long-term Excessive heat generation in high-temperature environments may cause the risk of burning

Method used

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  • A solar battery backplane
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Examples

Experimental program
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Effect test

Embodiment 1

[0040] Take 100 parts of polycarbonate alloy resin BayblendMC-6500, 1 part of spherical rutile titanium oxide particles with a diameter of 0.6 μm treated with alumina hydrate, 2 parts of talcum powder, 0.2 part of phenyl salicylate, 0.1 part of polytetrafluoroethylene The parts were mixed and dried, the drying temperature was 100° C., the drying time was 8 hours, and the moisture content of the measured material was 0.018%.

[0041] Put the mixture into the single-screw extruder, the extrusion temperature is 220 ° C, after extrusion, it passes through the melt coarse filter, metering pump, melt fine filter, static mixer, reaches the wide-mouth die, and casts to the cold On the roll, stretched, after setting treatment, edge trimming, corona on one side, and winding to obtain a 75 μm polycarbonate reflective film.

[0042] Coat one side of 188 μm PET with 4 μm polyurethane adhesive, and compound a 75 μm polycarbonate reflective layer after drying. Coat 4μm polyurethane adhesive...

Embodiment 2

[0044] Take 100 parts of polycarbonate alloy resin C-30, 3 parts of spherical rutile-type titanium oxide particles with a diameter of 0.6 μm treated with silicon oxide hydrate, 5 parts of silicon dioxide and zinc oxide mixed particles, 2-hydroxy-4- 0.4 parts of methoxybenzophenone and 0.6 parts of polytetrafluoroethylene were mixed and dried at a drying temperature of 100° C. and a drying time of 8 hours. The moisture content of the measured material was 0.018%.

[0045] Put the mixture into the single-screw extruder, the extrusion temperature is 220 ° C, after extrusion, it passes through the melt coarse filter, metering pump, melt fine filter, static mixer, reaches the wide-mouth die, and casts to the cold On the roll, stretched, after setting treatment, edge trimming, corona on one side, and winding to obtain a 75 μm polycarbonate reflective film.

[0046] Coat one side of 250 μm PET with 5 μm acrylic adhesive, and compound a 75 μm polycarbonate reflective layer after dryin...

Embodiment 3

[0048] Take 100 parts of polycarbonate alloy resin CycolOy EHA, 5 parts of scaly rutile-type titanium oxide particles with a diameter of 0.7 μm treated with triethanolamine, 8 parts of acrylic cross-linked particles, 0.6 part of benzotriazole, polytetrafluoroethylene 1.2 parts of ethylene were mixed and dried. The drying temperature was 110° C. and the drying time was 6 hours. The measured moisture content of the material was 0.015%.

[0049] Put the mixture into the single-screw extruder, the extrusion temperature is 230 °C, after extrusion, it passes through the melt coarse filter, metering pump, melt fine filter, static mixer, reaches the wide-mouth die, and casts to the cold On the roll, stretched, after setting treatment, edge trimming, corona on one side, and winding to obtain a 75 μm polycarbonate reflective film.

[0050] Coat one side of 250 μm PET with 6 μm polyvinyl acetate adhesive, and compound a 75 μm polycarbonate reflective layer after drying. Coat 6μm polyvin...

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Abstract

The present invention relates to a solar cell backboard. The solar cell backboard comprises a base material, a reflective film and a weather resistant layer, the base material and a reflecting layer are adhered by an adhesion agent, and the reflecting layer is a polycarbonate film of 75-175 micrometers. The reflecting layer of the present invention uses the polycarbonate and acrylonitrile-butadiene-styrene plastic alloys, so that the aqueous vapour transmittance of the solar call backboard is less than 1.0g / m2.24h. Moreover, the reflecting layer uses the processed titanium oxide particles and the contained pore structures, so that the reflectivity of the solar cell backboard is improved substantially, and the reflectivity to the visible light reach 100%. Further, the processed titanium oxide enables the endophilicity of a polytetrafluoroethylene fire retardant and a polycarbonate alloy to be improved, so that the flame retardant efficiency of the solar cell backboard is better.

Description

technical field [0001] The invention relates to the technical field of solar energy, in particular to a solar cell backboard. Background technique [0002] Solar cells directly convert solar energy into electrical energy, so inexhaustible, cheap and pollution-free solar energy will become the most important new energy source, and the solar cell industry is also growing rapidly. However, at present, the biggest problem faced by solar cells is the low power generation efficiency, which can reach 21% in the laboratory and only 17% in industrial production. How to improve the overall power generation efficiency of solar cells is a problem that the entire solar energy industry must pay attention to. [0003] In order to improve the photoelectric conversion efficiency of solar cells, one of the methods is to increase the reflective layer, such as a prior art is to add a reflective material to the film or directly set a white PE reflective layer, the reflective material or reflect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048H01L31/049H01L31/056C08L69/00C08L55/02C08L27/18C08K9/02C08K9/04C08K3/22
CPCY02E10/52
Inventor 李茜茜张艳李华峰田勇
Owner 乐凯胶片股份有限公司
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