Back sheet for a solar cell module, and solar cell module comprising same

A technology for solar cells and back sheets, applied in applications, circuits, electronic equipment, etc., can solve problems such as weak adhesion, and achieve the effects of improving adhesion, excellent heat dissipation characteristics, and low cost

Active Publication Date: 2014-04-16
YOULCHON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing back sheet 1 has a problem in that the adhesion between the fluorine-based PVDF film 1b and the EVA sheet 2b is weak

Method used

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  • Back sheet for a solar cell module, and solar cell module comprising same
  • Back sheet for a solar cell module, and solar cell module comprising same
  • Back sheet for a solar cell module, and solar cell module comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] 10 parts by weight of titanium dioxide (TiO2) with an average particle size of 3 μm 2 ) mixed with 100 parts by weight of polyethylene (PE). The mixture was prepared into a 150 μm thick white PE film (hereinafter, referred to as “W-PE film”) by biaxial stretching.

[0115] After forming an anti-corrosion layer on both surfaces of the 80 μm thick aluminum (Al) film, the above-prepared W-PE film (PE+TiO 2 ) attached on its surface to prepare a backplane with a stacked structure of W-PE film / anti-corrosion layer / Al film / anti-corrosion layer. The anticorrosion layer was formed by treating both surfaces of the aluminum (Al) film with chromic acid to a thickness of about 1 μm.

Embodiment 2

[0117] A back sheet was prepared in the same manner as in Example 1 except that a fluorine coating was also formed.

[0118] Specifically, by using a W-PE-free film (PE+TiO 2 ) on the attached anti-corrosion layer, the fluororesin composition was gravure-coated and hardened to a thickness of 20 μm to prepare a back plate with a stacked structure of W-PE film / anti-corrosion layer / Al film / corrosion-resistant layer / fluorine coating , the fluororesin composition is obtained by mixing PTFE and ethanol at 1:1 (weight ratio).

Embodiment 3

[0120] A back sheet was prepared in the same manner as in Example 1 except that a heat-dissipating ink coating was also formed. Specifically, a W-PE film / anticorrosion layer / Al film was prepared by gravure coating a liquid ink composition comprising acrylic resin and graphite powder in a weight ratio of 1:1 on the anticorrosion layer and hardening to a thickness of 25 μm. / anti-corrosion layer / heat dissipation ink coating stack structure backplane.

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Abstract

Provided are a back sheet for a solar cell module, and a solar cell module comprising same. The back sheet for a solar cell module comprises a heat-dissipating metal layer; an upper anticorrosion layer formed on the upper surface of said heat-dissipating metal layer; a lower anticorrosion layer formed on the lower surface of said heat-dissipating metal layer; and a surface layer formed on said upper anticorrosion layer and adhered to a charging sheet of the solar cell module. The back sheet for a solar cell module according to the present invention has superior heat-dissipating properties and thus may efficiently dissipate (discharge) heat generated in a solar cell, thereby increasing the amount of power generation (photoconversion efficiency) of the solar cell. In addition, the back sheet of the present invention is inexpensive and may improve adhesive force and the like.

Description

technical field [0001] The present disclosure relates to a backsheet for a solar cell module and a solar cell including the backsheet. More specifically, it relates to a back sheet for a solar cell module that can improve power generation of a solar cell due to excellent heat dissipation characteristics, can be supplied at low cost, has excellent adhesion, and the like, and a solar cell module including the same. Background technique [0002] Recently, solar cells developed as next-generation energy sources are rapidly spreading for domestic and industrial purposes. [0003] Generally, a solar cell module includes a plurality of solar cells. The solar cells are filled into the filler sheet and fixed by the filler sheet, a back sheet is attached at least on the lower surface for the purpose of sealing, thereby preparing a solar cell module. figure 1 The configuration of an existing general solar cell module is schematically shown. [0004] refer to figure 1 A solar cell m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/085H01L31/049H01L31/052
CPCH01L31/052H01L31/0487Y02E10/50B32B15/085B32B15/20B32B27/20B32B2255/06B32B2264/102B32B2457/12H01L31/049H01L31/0547Y02E10/52H01L31/048
Inventor 姜汉俊李星昊金振镐
Owner YOULCHON CHEM
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