Backboard for solar battery and solar battery assembly

A technology for solar cells and backplanes, applied in electrical components, applications, circuits, etc., can solve problems such as poor hydrolysis resistance, achieve good weather resistance, improve power generation efficiency, and excellent acid resistance

Inactive Publication Date: 2015-01-28
TOKYO JINYOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the hydrolysis resistance of polyester deteriorates as the thickness increases, so a film made of polyester is generally used for the formation of the back sheet.

Method used

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  • Backboard for solar battery and solar battery assembly
  • Backboard for solar battery and solar battery assembly
  • Backboard for solar battery and solar battery assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0097] Hereinafter, examples of the present invention will be described in detail.

[0098] Example

[0099] On one side of a polyethylene naphthalate (PEN) substrate (TEONEX manufactured by Teijin DuPont Films Japan Limited) with a thickness of 250 μm, a white resin composition was printed by screen printing so that the dry coating film was 30 μm, This was heated at 120 degreeC for 60 minutes, it was thermally cured, and the test piece which has a white layer was produced.

[0100]

[0101] A white resin composition was prepared by mixing and stirring the following components.

[0102] NIPPORAN 136 (manufactured by NIPPON POLYURETHANE INDUSTRY CO.LTD.) 100 parts by weight (thermoplastic resin)

[0103] TIPAQUE CR-90 (manufactured by Ishihara Sangyo Co., Ltd.) 1000 parts by weight (titanium oxide)

[0104] Aluminum hydroxide 20 parts by weight

[0105] Takenate R600 (manufactured by Mitsui Chemicals Co., Ltd.) 10 parts by weight (isocyanate compound)

[0106] 20 parts b...

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Abstract

[Problem] To provide a solar cell back-sheet that, without using fluorine and without applying a plurality of films, is capable of preventing the deterioration of a sealing resin and the back-sheet itself by having sufficient weather and moisture resistance, and sufficiently reflecting the ultraviolet rays and visible light rays irradiated from the rear surface of a solar cell module. [Solution] A solar cell back-sheet having a substrate comprising a polyethylene naphthalate, and a white layer obtained by hardening a white resin composition containing a thermoplastic resin, an ultraviolet-reflecting agent and an isocyanite compound, the solar cell back-sheet being characterized in that the white layer is laminated onto at least one surface of the substrate.

Description

technical field [0001] The present invention relates to a solar cell back sheet and a solar cell module using the same. Background technique [0002] In recent years, solar cells have attracted attention as an energy infrastructure replacing conventional energy infrastructures such as fossil fuels and atomic energy from the viewpoint of prevention of environmental pollution and safety. The solar cell module used in this solar cell generally includes: a surface protection material formed of a glass base material, a solar cell formed of crystalline silicon, an ethylene-vinyl acetate copolymer resin (hereinafter referred to as "EVA"). Encapsulating resin, and a back sheet that protects the solar cells and the encapsulating resin. [0003] The above-mentioned solar cell assembly is set outdoors and exposed to sunlight and rain for a long time. Therefore, in order to protect the sealing resin and the solar cell, the back sheet is required to have sufficient heat resistance, moi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049B32B27/06
CPCB32B2457/10B32B27/20B32B27/36Y02E10/50H01L31/049
Inventor 铃木道好洪伟
Owner TOKYO JINYOU CO LTD
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