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Solar battery rear panel compound film and method for making same

A technology for solar cells and composite films, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of high cost and complex preparation process, and achieve the effects of excellent performance, simple preparation process, and protection of battery functions.

Inactive Publication Date: 2008-01-02
周均华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The backplane of the solar cell adopts TPT packaging material, and its preparation process is complicated and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Preparation of solar cell backplane composite film

[0030] (1) Polyvinyl fluoride resin is added with 1% dibutyl phthalate, followed by drying, heating, extrusion, forming, longitudinal stretching, transverse stretching, trimming and coiling to obtain polyvinyl fluoride film.

[0031] (2) Anti-aging agent is added to PET resin, followed by drying, heating extrusion, forming, longitudinal stretching, transverse stretching, trimming and coiling to obtain polyvinyl fluoride film. The amount of anti-aging agent is based on the amount commonly used in the chemical industry. Coating a curing agent on the surfaces of the polyvinyl fluoride film and the PET film respectively, and hot-melt bonding to obtain a base film, and then coating an EVA coating on the other surface of the PET film to obtain a solar cell backplane composite film.

[0032] The obtained solar cell backboard composite film is composited by the following three layers of materials:

[0033] 0.04mm ...

Embodiment 2

[0041] Example 2 Preparation of solar cell backplane composite film

[0042] Change the process parameter in each preparation step of embodiment 1, change the thickness of each film, thus the composite film of solar battery back plate that makes is compounded by following three layers of materials:

[0043] 0.038mm thick polyvinyl fluoride film;

[0044] 0.30mm thick PET film;

[0045] 0.032mm thick EVA coating.

[0046] Described EVA coating is made up of the component of following parts by weight:

[0047] 100 parts of EVA resin;

[0048] Antioxidant 0.1 part;

[0049] 1 part of hindered amine stabilizer;

[0050] Light stabilizer 0.2 part.

[0051] The composite membranes prepared in Example 1 and Example 2 can be tested as shown in Table 1. The composite membranes have excellent mechanical properties and good aging resistance, and their test data are generally better than similar composite membranes.

[0052] Table 1

[0053] Test items

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PUM

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Abstract

The invention relates to a solar-energy battery back board composite membrane, and a relative production. The composite film is composed of following three layers as one polyvinyl fluoride film at 0.035-0.045mm thick, a PET film at 0.18-0.30mm thick, and an EVA coat at 0.025-0.035mm thick. The production comprises that respectively coating solidifiers on the surfaces of polyvinyl fluoride film and PET film, to be thermally adhered to obtain a base film, then coating an EVA coat on another surface of the PET film to obtain the solar-energy battery back board composite film. The invention has simple production and better property.

Description

(1) Technical field [0001] The invention relates to a composite film of a solar battery back plate and a preparation method thereof. (2) Background technology [0002] Solar cells are directly exposed to the atmosphere and must withstand high and low temperature and water vapor erosion. If it cannot resist corrosion, its photoelectric conversion performance will be easily attenuated and lose its practical value. Therefore, the research on solar cell packaging materials is very important and has attracted people's attention. In order to achieve the purpose of high and low temperature resistance and water vapor resistance, two pieces of EVA film are generally used to encapsulate the solar cell, and thermally bonded with the upper glass and the bottom TPT to form a solar panel. The backplane of the solar cell adopts TPT encapsulation material, and its preparation process is complicated and the cost is high. (3) Contents of the invention [0003] The technical problem to be ...

Claims

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Application Information

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IPC IPC(8): H01L31/0203H01L31/18H01L31/049
CPCY02E10/50Y02P70/50
Inventor 周均华
Owner 周均华
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