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Coated type solar battery backboard

A technology for solar cells and back sheets, applied in the field of solar cells, can solve the problems of coating peeling off, affecting the service life of solar cell back sheets, etc., and achieve the effects of high adhesion, excellent weather resistance, and uniform appearance

Active Publication Date: 2015-04-08
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, tight adhesion between fluoropolymer films and polymeric substrate materials that does not detach after years of outdoor exposure is difficult to achieve
The existing technology can also use the coating method to produce the backsheet. However, the current general-purpose coating design has the hidden danger of the coating being partially detached from the PET after heat and humidity aging, which affects the service life of the solar battery backsheet.

Method used

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  • Coated type solar battery backboard
  • Coated type solar battery backboard
  • Coated type solar battery backboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 100 grams of butanone and 175 grams of ethyl acetate into a container equipped with a stirring device, start stirring, and mix 125 grams of hydroxyl-containing perfluoroolefin polymers, 100 grams of titanium dioxide powder, and 5 grams of polyester resin and 20 g of hexamethylene diisocyanate trimer were sequentially added to the solvent, ground and stirred for 60 minutes to prepare the fluoropolymer layer coating liquid (a).

[0028] Add 100 grams of methyl ethyl ketone and 175 grams of ethyl acetate into a container equipped with a stirring device, start stirring, and mix 125 grams of perfluoroolefin polymers containing hydroxyl groups, 100 grams of titanium dioxide powder and 20 grams of hexamethylene Add the trimer of diisocyanate to the solvent in sequence, grind and stir for 60 minutes, and prepare the coating solution (b) for the fluoropolymer layer.

[0029] Apply the coating liquid (a) on the PET substrate by the doctor blade coating method, and dry it with...

Embodiment 2

[0032] Add 60 grams of butyl acetate and 125 grams of methyl ethyl ketone into a container equipped with a stirring device, start stirring, and mix 175 grams of CTFE-based polymers mainly containing hydroxyl-containing chlorotrifluoroethylene (CTFE) units, 100 grams of Titanium dioxide powder, 5 grams of polyester resin and 40 grams of isophorone diisocyanate polymer were sequentially added to the solvent, ground and stirred for 60 minutes to prepare the fluoropolymer layer coating liquid (a).

[0033] Add 60 grams of butyl acetate and 125 grams of methyl ethyl ketone into a container equipped with a stirring device, start stirring, and mix 175 grams of CTFE-based polymers mainly containing hydroxyl-containing chlorotrifluoroethylene (CTFE) units, 100 grams of Titanium dioxide powder and 40 grams of isophorone diisocyanate polymer were sequentially added to the solvent, ground and stirred for 60 minutes to prepare the fluoropolymer layer coating liquid (b).

[0034] Apply the ...

Embodiment 3

[0037] Add 100 grams of butanone and 75 grams of propylene glycol methyl ether acetate into a container equipped with a stirring device, start stirring, and mix 200 grams of hydroxyl-containing perfluoroolefin polymers, 175 grams of titanium dioxide powder, and 10 grams of poly The ester resin and 35 g of hexamethylene diisocyanate trimer were sequentially added to the solvent, ground and stirred for 60 minutes to prepare the fluoropolymer layer coating solution (a).

[0038] Add 100 grams of butanone and 75 grams of propylene glycol methyl ether acetate into a container equipped with a stirring device, start stirring, and mix 200 grams of perfluoroolefin polymers containing hydroxyl groups, 175 grams of titanium dioxide powder and 35 grams of six The methylene diisocyanate trimer was sequentially added to the solvent, ground and stirred for 60 minutes to prepare the fluorine-containing polymer layer coating solution (b).

[0039] Apply the coating liquid (a) on the PET substr...

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Abstract

The invention relates to a coated type solar battery backboard. At least one surface of a base material is coated with a first weather resisting layer, and the first weather resisting layer is coated with a second weather resisting layer. A coated type backboard produced according to the invention is excellent in performance and excellent in weather resistance; the coatings are uniform in appearance after double 85% damp-heat aging, free of pulverization and high in adhesive force.

Description

technical field [0001] The patent of the present invention relates to the technical field of solar cells, in particular to a coated solar cell backplane. Background technique [0002] As a green alternative to traditional methods of electricity production, photovoltaic cell modules are used to generate electricity from the sun. Photovoltaic modules are assembled from various semiconductor element systems and must be protected to reduce the impact and damage of environmental effects such as moisture, oxygen and ultraviolet rays. Photovoltaic cell modules are generally made of glass, battery silicon wafers, EVA, and backsheet materials by hot pressing. Therefore, backsheets with excellent electrical insulation, interlayer bonding strength, weather resistance, UV resistance, and moisture resistance are used in Photovoltaic modules play an important protective role. [0003] The traditional backsheet production method is formed by attaching fluoropolymer film on both sides of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049H01L31/18
CPCY02E10/50Y02P70/50
Inventor 刘丽英吕小波陈路张振华
Owner 乐凯胶片股份有限公司
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