A double-glass photovoltaic module structure and packaging method

A module structure, double-glass photovoltaic technology, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problems that the battery does not have durability, UV resistance, low output power, etc., so as to reduce surface chromatic aberration defects and improve power output. , Improve the effect of reflected light absorption

Active Publication Date: 2017-08-08
普德光伏技术(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For the conventional double-glass photovoltaic module structure, its structure from top to bottom is tempered glass, the upper layer of transparent packaging material, battery sheet, and the lower layer of transparent packaging material, which is characterized by overall transparency. In the structure, the light will directly pass through the transparent upper glass, the packaging material, and the lower glass. When it hits the back plate, it will undergo internal diffuse reflection. There is no back reflection to cause sunken light, and the battery itself does not have the ability to withstand and endure ultraviolet light, so compared with conventional components, its output power will be 2%-5% lower

Method used

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  • A double-glass photovoltaic module structure and packaging method
  • A double-glass photovoltaic module structure and packaging method
  • A double-glass photovoltaic module structure and packaging method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a double-glass photovoltaic module structure includes an upper glass 5, an upper packaging material 4, a photovoltaic cell 3, a lower packaging material 2 and a lower glass 1, the upper packaging material 4 is laid on the front of the photovoltaic cell 3, and the upper packaging material 4 is a transparent packaging material, and the lower packaging material 2 is a non-transparent packaging material. The formula of the non-transparent packaging material is mainly 90% vinyl acetate, 3% ultraviolet absorber, 3% antioxidant and 3% light stabilizer. It is made of opaque pigment, and 0.5-2g of opaque pigment titanium dioxide is added per square meter of packaging material to make a white non-transparent packaging material, and the lower layer of white packaging material 2 is laid on the back of the photovoltaic cell 3 .

[0027] Since the white non-transparent packaging material is laid on the back of the photovoltaic cell, it can improve the absor...

Embodiment 2

[0029] All the other are the same as Example 1, except that the non-transparent encapsulation material formula is mainly 85% vinyl acetate, 5% UV absorber, 5% antioxidant and 4% light stabilizer adding opaque pigment It is made by adding 0.5-2g of opaque pigment titanium dioxide per square meter of packaging material to make a white non-transparent packaging material.

Embodiment 3

[0031] All the other are the same as Example 1, except that the non-transparent encapsulation material formula is mainly 85% vinyl acetate, 5% UV absorber, 4% antioxidant and 5% light stabilizer adding opaque pigment It is made by adding 0.5-2g of opaque pigment titanium dioxide per square meter of packaging material to make a white non-transparent packaging material.

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Abstract

The invention discloses a double-glass photovoltaic module structure, which comprises an upper layer of glass, an upper layer of encapsulation material, a photovoltaic cell, a lower layer of encapsulation material and a lower glass, the upper layer of encapsulation material is laid on the front of the photovoltaic cell, the upper layer of encapsulation material It is a transparent encapsulation material, the lower encapsulation material is laid on the back of the photovoltaic cells, the lower encapsulation material is a non-transparent encapsulation material, and a double-glass photovoltaic module encapsulation method is also disclosed. The beneficial effects of the present invention are: it can increase the power output of the double-glass module by 2%-5%, can withstand long-term ultraviolet exposure in outdoor work, reduce the surface chromatic aberration defect of the ordinary double-glass module battery, protect the edge of the double-glass module, and improve the double-glass module. Glass component life.

Description

technical field [0001] The invention relates to the field of photovoltaic module design, in particular to a double-glass photovoltaic module structure and packaging method. Background technique [0002] For the conventional double-glass photovoltaic module structure, its structure from top to bottom is tempered glass, the upper layer of transparent packaging material, battery sheet, and the lower layer of transparent packaging material, which is characterized by overall transparency. In the structure, the light will directly pass through the transparent upper glass, the packaging material, and the lower glass. When it hits the back plate, it will undergo internal diffuse reflection. There is no back reflection to cause sunken light, and the battery itself does not have the ability to withstand and withstand ultraviolet rays for a long time, so compared with conventional components, its output power will be 2%-5% lower. Contents of the invention [0003] In order to solve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048H01L31/18
CPCH01L31/048H01L31/0481H01L31/0488Y02E10/50Y02P70/50
Inventor 张飞飞陈沁顾斌锋
Owner 普德光伏技术(苏州)有限公司
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