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Method for encapsulating crystalline silicon solar cell component

A technology of solar cells and encapsulation methods, applied in the field of solar photovoltaics, can solve problems such as aging and yellowing, and achieve the effects of delaying yellowing, improving photoelectric conversion efficiency, and extending service life

Inactive Publication Date: 2011-09-14
ZHEJIANG ZHENGXIN PHOTOVOLTAIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to reduce costs, a large number of PET-based composite material products are used as the backsheet material of crystalline silicon solar cell modules. The backsheet material is susceptible to aging and yellowing due to ultraviolet radiation.

Method used

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  • Method for encapsulating crystalline silicon solar cell component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1. A method for encapsulating a crystalline silicon solar cell assembly, which comprises laminating tempered glass 1, A-type EVA adhesive film 2, crystalline silicon solar cell 3, B-type EVA adhesive film 4, and PET back plate 5, heating and vacuumizing Compression packaging, the side facing the sun uses A-type EVA film with high light transmittance, and the other side uses B-type EVA film that absorbs and blocks ultraviolet rays. The A-type EVA film, by weight, It is composed of 95% EVA resin and 5% modified additive a; the EVA resin is high light transmittance EVA resin PV1200 with a VA content of 33%. The formula of modified additive a is: by weight, by 1.5 parts of organic peroxide crosslinking agent, 2 parts of crosslinking auxiliary agent, 0.8 part of silane coupling agent, 0.3 part of light stabilizer and 0.2 part of antioxidant composition.

[0027] The B-type EVA adhesive film is composed of 95% EVA resin and 5% modified additive b in parts by weight;...

Embodiment 2

[0029] Example 2. A method for encapsulating a crystalline silicon solar cell assembly, which comprises laminating tempered glass 1, A-type EVA adhesive film 2, crystalline silicon solar cell 3, B-type EVA adhesive film 4, and PET back plate 5, heating and vacuumizing Compression packaging, the side facing the sun uses A-type EVA film with high light transmittance, and the other side uses B-type EVA film that absorbs and blocks ultraviolet rays. The A-type EVA film, by weight, It is composed of 95% EVA resin and 5% modified additive a; the EVA resin is high light transmittance EVA resin EV150 with VA content of 33%. The formula of modified additive a is: by weight, by 1.49 parts of organic peroxide crosslinking agent, 1.99 parts of crosslinking auxiliary agent, 0.99 part of silane coupling agent, 0.28 part of light stabilizer and 0.25 part of antioxidant composition.

[0030] The B-type EVA adhesive film is composed of 95% EVA resin and 5% modified additive b in parts by wei...

Embodiment 3

[0034] Example 3. A method for encapsulating a crystalline silicon solar cell assembly, which comprises laminating tempered glass 1, A-type EVA adhesive film 2, crystalline silicon solar cell 3, B-type EVA adhesive film 4, and PET back plate 5, heating and vacuumizing Compression packaging, the side facing the sun uses A-type EVA film with high light transmittance, and the other side uses B-type EVA film that absorbs and blocks ultraviolet rays. The A-type EVA film, by weight, It is composed of 95% EVA resin and 5% modification additive a; the EVA resin is high light transmittance EVA resin MA-10 with VA content of 33%. The formula of modified additive a is: in parts by weight, composed of 1 part of organic peroxide crosslinking agent, 1 part of crosslinking auxiliary agent, 1 part of silane coupling agent, 1 part of light stabilizer and 1 part of antioxidant composition.

[0035] The B-type EVA adhesive film is composed of 95% EVA resin and 5% modified additive b in parts b...

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Abstract

The invention discloses a method for encapsulating a crystalline silicon solar cell component. The method comprises the following steps of: laminating toughened glass, an EVA (Ethylene Vinyl Acetate) adhesive film, a crystalline silicon solar cell component, an EVA adhesive film and a PET (Polyethylene Glycol Terephthalate) back plate material; and heating, vacuumizing, pressurizing and encapsulating. The method is characterized in that: the EVA adhesive films laminated at both sides of the crystalline silicon solar cell are made of EVA film materials of different characters, so that the light transmittance can be increased, the photoelectric conversion efficiency of the crystalline silicon solar cell component is increased, and a PET back plate of the solar cell component can be effectively protected.

Description

technical field [0001] The invention relates to a method for encapsulating a crystalline silicon solar battery module, which belongs to the technical field of solar photovoltaics. Background technique [0002] At present, the commonly used packaging method for crystalline silicon solar cell modules at home and abroad is: after laminating low-iron tempered glass, EVA film, crystalline silicon solar cell, EVA film, TPT or PET backsheet material, heating and vacuumizing and pressurizing the package, Produce solar cell modules. The main functions of EVA film in solar cell modules are as follows: 1. Long-term and effective protection of crystalline silicon solar cells; 2. Good adhesion and fixation with glass, solar cells, and backplanes; Light transmittance does not affect the photoelectric conversion efficiency of solar cells. At present, the EVA film used at home and abroad, the two layers of EVA film wrapped on the top and bottom of the crystalline silicon solar cell are th...

Claims

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Application Information

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IPC IPC(8): H01L31/18B32B17/10B32B27/08B32B27/30B32B27/36B32B7/10
CPCY02P70/50
Inventor 李正茂
Owner ZHEJIANG ZHENGXIN PHOTOVOLTAIC TECH
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