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Back plate of solar cell

A technology for solar cells and backsheets, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of general water vapor barrier effect and low adhesive strength, and achieve strong weather resistance, high barrier performance, and high adhesive strength Effect

Inactive Publication Date: 2009-02-04
CHINA LUCKY FILM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of solar battery backsheet has the disadvantages of general barrier effect on water vapor and low bonding strength between the weather-resistant layer and the packaging material EVA.

Method used

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  • Back plate of solar cell
  • Back plate of solar cell
  • Back plate of solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 25 parts of polyvinylidene fluoride (manufactured by Aldrich);

[0034] 3 parts of hydroxyl modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin;

[0035] (manufactured by China Lucky Film Group Corporation)

[0036] 2 parts of polytetrafluoroethylene (made by Solvay Solexis);

[0037] Titanium dioxide powder (made by Du PONT) 0.2 part;

[0038] Butanone 20 parts;

[0039] 50 parts of ethyl acetate;

[0040] Add 20 parts of methyl ethyl ketone and 50 parts of ethyl acetate into a container equipped with a stirring device, start stirring, and mix 25 parts of polyvinylidene fluoride, 3 parts of hydroxyl-modified polyvinylidene fluoride-tetrafluoroethylene-hexa Fluoropropylene resin, 2 parts of polytetrafluoroethylene powder and 0.2 parts of titanium dioxide powder were added to the solvent in sequence, and stirred for 60 minutes to obtain a weather-resistant layer coating solution.

[0041] Coat one side of the substrate PET film with a poly...

Embodiment 2

[0043] 40 parts of polytetrafluoroethylene (made by Aldrich);

[0044] Amino-modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin

[0045] (manufactured by China Lucky Film Group Corporation) 2 copies;

[0046] Polyamide particles (made by Solvay Solexis) 3 parts;

[0047] 0.3 parts of quartz particles (manufactured by Du PONT);

[0048] 55 parts of butyl acetate;

[0049] Add 55 parts of butyl acetate into a container equipped with a stirring device, start stirring, and mix 40 parts of polytetrafluoroethylene and 2 parts of amine-modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin , 3 parts of polyamide particles and 0.3 parts of quartz particles were sequentially added into the solvent, and stirred for 50 minutes to prepare a weather-resistant layer coating liquid.

[0050] Coat one side of the substrate PEN film with a polyurethane adhesive (manufactured by DYMAX), dry it with hot air and compound it with a metal alumin...

Embodiment 3

[0052] 45 parts of polyvinylidene fluoride-hexafluoropropylene (manufactured by Dyneon);

[0053] Aziridine-modified polyvinylidene fluoride-tetrafluoroethylene-hexafluoropropylene resin

[0054] (manufactured by China Lucky Film Group Corporation) 2.5 copies;

[0055] 2.5 parts of polyacrylate polymer particles (made by solvay solexis);

[0056] 0.1 parts of mica particles (manufactured by Du PONT);

[0057] 50 parts of toluene;

[0058] Add 50 parts of toluene to a container equipped with a stirring device, start stirring, and mix 45 parts of polyvinylidene fluoride-hexafluoropropylene, 2.5 parts of polyvinylidene fluoride-tetrafluoroethylene modified by aziridine - Hexafluoropropylene resin, 2.5 parts of polyacrylate polymer particles and 0.1 part of mica particles were sequentially added to the solvent and stirred for 80 minutes to prepare a weather-resistant layer coating liquid.

[0059] Epoxy adhesive (manufactured by Hexion) is coated on one side of the substrate P...

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Abstract

Disclosed is a solar cell back panel, comprising a substrate material and a weather-resistant layer. The weather-resistant layer is at least arranged at one side of the substrate material, and a barrier film is arranged at one side of the substrate material. The weather-resistant layer contains the following ingredients (based on weight portion) 25-45 portions of fluorine resin, 1.5-3 portions of modified resin, 0.5-3 portions of polymer fillers, 0.1-1 portion of inorganic filler and 50-70 portions of solvent. The solar cell back panel is of strong weather resistance, good water barrier property and high adhesion with a solar cell package material.

Description

technical field [0001] The invention relates to a solar cell backboard. Background technique [0002] As a green alternative to conventional methods of electricity production, photovoltaic cell modules are used to generate electricity from sunlight. Photovoltaic modules are assembled from various semiconductor element systems and must be protected against environmental influences and damage such as moisture, oxygen and ultraviolet light. Photovoltaic cell modules are directly exposed to the atmosphere when they are in use, and they have to withstand temperature changes, ultraviolet radiation, and water vapor erosion. If they cannot resist the influence of environmental factors, their photoelectric conversion performance is easy to attenuate and lose their practical value. Therefore, research on solar cell packaging materials It is very important and has attracted people's attention. [0003] In order to achieve the purpose of enhancing weather resistance, blocking ultravio...

Claims

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Application Information

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IPC IPC(8): H01L31/0203H01L31/048B32B5/00B32B33/00B32B27/20B32B27/24
CPCY02E10/50
Inventor 李刚李兴明刘天人张学建邹竞
Owner CHINA LUCKY FILM CORP
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