Solar cell back panel, preparation method thereof and solar module

A technology for solar cells and backplanes, applied in electrical components, chemical instruments and methods, circuits, etc., can solve problems such as poor weather resistance, low adhesion, and non-environmental protection, and achieve strong weather resistance, high adhesion, and improved weather resistance Effect

Inactive Publication Date: 2011-05-04
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention solves the technical problems of poor weather resistance, low adhe

Method used

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  • Solar cell back panel, preparation method thereof and solar module
  • Solar cell back panel, preparation method thereof and solar module
  • Solar cell back panel, preparation method thereof and solar module

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] Take 0.25mm thick aluminum foil as a barrier layer, wipe both sides of the aluminum foil with absolute ethanol cotton, and blow dry with a hair dryer. Using powder electrostatic spraying equipment (model: HVM2072, manufacturer: Zhengzhou Chaohui Electrostatic Spraying Equipment Co., Ltd.), spray PPS powder with a thickness of 0.04mm on both sides of the aluminum foil. Then transfer it to an oven to bake at 290°C for 3 minutes, take it out and cool it naturally, and then PPS weather-resistant layer and PPS insulating layer can be formed on both sides of the aluminum foil. Through the above steps, the solar cell back sheet of this embodiment was prepared, which was denoted as A1. The solar cell backplane has figure 1 The structure shown.

Example Embodiment

[0032] Example 2

[0033] Take 0.25mm thick aluminum foil as a barrier layer, wipe both sides of the aluminum foil with absolute ethanol cotton, and blow dry with a hair dryer. Using co-extrusion compounding equipment (model: SJ-LM1250, manufacturer: Changzhou Sanyuan Plastic Machinery Co., Ltd.), the aluminum foil is used as the intermediate layer, and a 0.05mm thick PPS layer is extruded on one surface and the other surface is extruded 0.05mm thick PET layer. Then, the PPS layer and PET layer on the two surfaces of the aluminum foil are hot-pressed and composited with the aluminum foil through a composite roller, and the PPS weather-resistant layer and the PET insulating layer can be formed on both sides of the aluminum foil. Through the above steps, the solar cell back sheet of this embodiment was prepared, which was denoted as A2.

Example Embodiment

[0034] Example 3

[0035] Take a 0.25mm thick copper-plated film as a barrier layer, wipe both sides of the aluminum foil with anhydrous ethanol cotton, and blow dry with a hair dryer. Brush the adhesive EVA with a thickness of 0.01mm on the upper and lower sides of the copper-plated film, then attach a 0.02mm PPS film to it on one surface, and attach a 0.02mm PC film to it on the other surface. Press curing to form PPS weather resistant layer and PC insulating layer on both sides of the copper-plated film. Through the above-mentioned steps, the solar cell back sheet of this embodiment was prepared, denoted as A3. The solar cell backplane has figure 2 The structure shown.

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Abstract

The invention provides a solar cell back panel which comprises an insulating layer, an obstructing layer and a weathering layer from top to bottom, wherein the obstructing layer is a metal layer; and the weathering layer is a polyphenyl thioether layer. The invention also provides a solar module which comprises a battery, a euphotic zone and a back panel, wherein the euphotic zone, the battery and the back panel are sequentially overlapped from top to bottom. The solar module is characterized in that the back panel is the solar cell back panel provided by the invention. The solar cell back panel of the invention has the advantages of low cost, environmental protection, weathering performance and higher adhesion among all layers.

Description

technical field [0001] The invention relates to a solar battery backboard, a preparation method thereof and a solar battery module using the backboard. Background technique [0002] Solar cell modules are directly exposed to the atmosphere during use, and are subject to temperature changes, ultraviolet radiation and water vapor erosion. 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. [0003] In order to improve weather resistance and block ultraviolet rays and water vapor, two polyvinyl acetate (EVA) films are generally used to encapsulate solar cells, and they are bonded together with the upper glass and the lower back sheet material to form a solar panel. . Tedlar-PET-Tedlar (TPT) packaging structure is often used in solar battery backplanes in the prior art; Tedlar is mainly made of pol...

Claims

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Application Information

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IPC IPC(8): H01L31/0203H01L31/18H01L31/048B32B15/04B32B15/20H01L31/049
CPCY02E10/50Y02P70/50
Inventor 张晓宇周良
Owner BYD CO LTD
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