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Solar cell back plate, preparation method of same and solar cell component

A technology for solar cells and backsheets, applied in the field of solar cells, can solve problems such as increased water vapor transmission rate, poor bonding performance, and easy moisture and heat aging, and achieve improved bonding performance, increased service life, and resistance to water vapor transmission sexually superior effect

Active Publication Date: 2013-06-26
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the technical problems of poor bonding performance between layers of the solar cell back sheet in the prior art, high cost, and easy humidity and heat aging, resulting in increased water vapor transmission rate

Method used

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  • Solar cell back plate, preparation method of same and solar cell component
  • Solar cell back plate, preparation method of same and solar cell component
  • Solar cell back plate, preparation method of same and solar cell component

Examples

Experimental program
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Embodiment 1

[0042] (1) Preparation of fluorine-containing coatings: 100 parts by weight of tetrafluoroethylene copolymer (Daikin Industry Co., Ltd., Zeffle GK570, solid content 65wt%), 30 parts by weight of titanium dioxide (DuPont, R706), 10 parts by weight of acetic acid After the butyl ester was pre-mixed under stirring, 150 parts by weight of 0.20 mm zirconia beads were added, and the pigment dispersant was used to disperse at a speed of 3000 rpm for 30 minutes. Then, the zirconia beads were filtered out with a 200-mesh sieve, and 10 parts by weight of an isocyanate curing agent (Bayer, N3390) was added to obtain the white fluorine-containing paint of this embodiment.

[0043] (2) Preparation of polyurethane coating: 100 parts by weight of polyester resin (Toyobo, 680 resin) was dissolved in 300 parts by weight of ethyl acetate, and then 10 parts by weight of isocyanate curing agent (Bayer, N3390) was added to obtain this Examples of polyurethane coatings.

[0044] (3) Preparation of...

Embodiment 2

[0059] The same steps as in Example 1 were used to prepare the solar cell backsheet S2 of this example, the difference being that:

[0060] In step (3), the amount of EVA used is 300 parts by weight, wherein the content of VA is 5 wt%.

Embodiment 3

[0062] The same steps as in Example 1 were used to prepare the solar cell backsheet S3 of this example, the difference being that:

[0063] In step (2), 0.5 parts by weight of carbodiimide and 1.0 parts by weight of fumed silica are also added to the polyurethane coating.

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Abstract

The invention provides a solar cell back plate. The solar cell back plate comprises a fluorine-containing polymer paint curing coating layer, a polyurethane coating layer, an insulating substrate layer, an adhesive layer and a heat-moisture resistant layer from downside to upside, wherein the heat-moisture resistant layer is a mixture containing ethylene-vinyl acetate copolymer and polyolefin. The invention also provides a preparation method of the solar cell back plate and a solar cell component adopting the solar cell back plate. The solar cell back plate provided by the invention has excellent adhesion performance between the layers, good water steam resistant permeability before and after the heat-moisture treatment, and low cost.

Description

technical field [0001] The invention belongs to the field of solar cells, and relates to a solar cell backboard, a preparation method thereof, and a solar cell component. Background technique [0002] A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect. It has three advantages of permanence, cleanliness and flexibility, and its market prospect is broad. The photoelectric conversion elements of solar cell modules are easily affected and damaged by environmental effects such as moisture, oxygen and ultraviolet rays, resulting in serious attenuation of photoelectric conversion performance. If it cannot resist the influence of environmental factors, its photoelectric conversion performance will be easily attenuated and lose its practical value. Therefore, the research on solar cell packaging materials is very important. In order to improve weather resistance and block ultraviolet rays and water vapor, two polyviny...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/18B32B27/08B32B27/28B32B27/32B32B27/40H01L31/049
CPCY02E10/50
Inventor 鲁遥
Owner BYD CO LTD
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