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Rear panel for solar cell

A technology for solar cells and backplanes, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve problems such as wiring corrosion, changes in sealing materials, and reduction in output power of solar cell modules, so as to improve power generation efficiency and prevent deterioration. Effect

Inactive Publication Date: 2012-07-11
TOKYO JINYOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because when moisture penetrates the sealing material from the back sheet, the sealing material changes, the wiring corrodes, and the output of the solar cell module decreases.

Method used

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  • Rear panel for solar cell
  • Rear panel for solar cell
  • Rear panel for solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] On one side of a polyethylene naphthalate (PEN) film (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 heat-cured at 120°C for 60 minutes to produce a white layer. Thereafter, a PEN film (TEONEX manufactured by Teijin DuPont Films Japan Limited) having a thickness of 50 μm was bonded by thermocompression to the surface of the white layer to prepare a test piece.

Embodiment 2

[0119] On one side of a PEN film (TEONEX manufactured by Teijin DuPont Films Japan Limited) with a thickness of 200 μm, a white resin composition was printed by screen printing so that the dry coating film was 30 μm, and it was heated at 120° C. for 60 minutes to make it Heat curing to produce a white layer. Thereafter, a PEN film (TEONEX manufactured by Teijin DuPont Films Japan Limited) having a thickness of 50 μm was bonded by thermocompression to the surface of the white layer to prepare a test piece.

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Abstract

The invention provides a rear panel for a solar cell and a manufacturing method for the rear panel. The rear panel for a solar cell fully reflects the visible light and the ultraviolet light irradiated from the surface of a solar cell module so as to return the visible light and the ultraviolet light to the solar cell unit. The solar cell unit can generate electricity more effectively. At the same time, through fully reflecting the visible light and the ultraviolet light, the deterioration of the solar cell unit is prevented. The rear panel for the solar cell is characterized by comprising a first film made of polyester, a white layer formed through curing white resin composition containing thermoplastic resin, white pigment and aluminum hydroxide, and a second film made of polyester. The white layer is clamped by the first film and the second film in a laminating manner.

Description

technical field [0001] The present invention relates to a back sheet for solar cells and a method for manufacturing the back sheet for solar cells. 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. Examples of solar cell modules used in solar cells include monocrystalline silicon systems, polycrystalline silicon systems, and amorphous silicon. A general solar cell module is produced by a method, etc., in which a surface protection material, a sealing material, a solar cell, a sealing material, and a back sheet formed of a glass substrate or the like are sequentially bonded to each other in order. Lamination, a method of thermocompression bonding with a vacuum laminator, etc. [0003] Generally, solar cell modules are installed outdoors. Therefore, in order ...

Claims

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Application Information

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IPC IPC(8): H01L31/0232H01L31/048H01L31/18B32B27/18B32B27/20B32B27/36B32B27/30H01L31/049H01L31/054
CPCY02E10/52
Inventor 铃木道好洪伟
Owner TOKYO JINYOU CO LTD
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