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Patterned photovoltaic backplate and preparation method thereof

A photovoltaic backplane and patterning technology, applied in the field of solar cells, can solve the problems of difficult construction of reflective coatings and attenuation of adhesion.

Inactive Publication Date: 2019-05-24
SUZHOU FIRST PV MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adhesive strength of the reflective strips will attenuate after aging, and the construction of reflective coatings is relatively difficult

Method used

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  • Patterned photovoltaic backplate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Prepare the ink according to the formula listed in Table 1, use a transparent base layer, and screen-print the surface (EVA surface) that is in contact with the packaging material. The graphite position corresponds to the gap position of the solar cell, and then bake in a 160°C oven After 3 minutes, a patterned photovoltaic backplane was prepared, wherein the thickness of the ink layer was 30 microns.

[0036] Table 1

[0037] Types of

[0038] Note: The proportions in the table are weight ratios.

Embodiment 2

[0040] Prepare the ink according to the formula listed in Table 2, use a white base layer, and screen-print the surface (EVA surface) that is in contact with the packaging material. The position of the graphite corresponds to the gap position of the solar cell, and then bake in an oven at 150°C After 2.5 minutes, a patterned photovoltaic backplane was prepared, in which the thickness of the ink layer was 20 microns.

[0041] Table 2

[0042] Types of

[0043] Note: The proportions in the table are weight ratios.

Embodiment 3

[0045] Prepare the ink according to the formula listed in Table 3, use a transparent base layer, and screen-print the surface (EVA surface) that is in contact with the packaging material. The position of the graphite corresponds to the gap position of the solar cell, and then bake in a 100°C oven After 5 minutes, a patterned photovoltaic backplane was prepared, wherein the thickness of the ink layer was 30 microns.

[0046] table 3

[0047] Types of

[0048] Note: The proportions in the table are weight ratios.

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Abstract

The invention discloses a patterned photovoltaic backplate and a preparation method thereof. The process is simple and convenient, production equipment is simple and low in cost, and the performance is stable and excellent. The patterned photovoltaic backplate comprises a base layer and a patterned ink layer, wherein the ink layer is formed by ink printed on the surface of the base layer, and theink is prepared from, by weight, 120-800 parts of fluororesin, 10-500 parts of modified resin, 100-500 parts of pigments and fillers, 5-300 parts of a diluent, 5-85 parts of a curing agent and 5-15 parts of an aid. The modified resin is a combination of one or more of polyhydroxy alkyd resin, polyhydroxy polyester resin, polyhydroxy acrylic resin, polyhydroxy polyolefin resin, polyhydroxy polycarbonate resin and epoxy resin.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a patterned photovoltaic backplane and a preparation method thereof. Background technique [0002] Solar energy is a renewable, clean, non-polluting, emerging energy that is not limited by geographical resources, and is gradually being applied on a large scale. However, with the development of the industry and the development of sunshine resources year by year, people have higher and higher requirements for the efficiency and appearance of crystalline silicon solar cells and modules. On the basis of the traditional white backsheet, a series of photovoltaic backsheets have been derived, such as transparent, Black, colored backplanes, etc., to meet the existing requirements for efficiency and appearance. [0003] In order to further improve the working efficiency of the above-mentioned components, the solutions on the market are mainly realized by arranging reflective strips...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/106C09D11/102C09D11/03C09D11/033B41M1/12B41M1/26H01L31/049H01L31/18
CPCY02E10/50
Inventor 张云飞蔡欣张宇辉李楠楠
Owner SUZHOU FIRST PV MATERIAL CO LTD
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