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Solar cell module back sheet, method for manufacturing solar cell module back sheet, and solar cell module

A technology of solar cells and manufacturing methods, applied in the direction of electrical components, chemical instruments and methods, applications, etc., can solve the problems of increased cost, high price, damage to the original backplane for black solar cell modules, etc., and achieve difficult discoloration and inhibition The effect of the increase in cost

Inactive Publication Date: 2014-09-10
KEIWA INCORPORATED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a black resin layer containing a black perylene-based pigment is provided on a back sheet for a solar cell module, the black perylene-based pigment will discolor due to long-term use, which may damage the performance of the black solar cell module. The problem with the original purpose of the backplane
In addition, as a black perylene-based pigment, a black perylene-based pigment that suppresses the above-mentioned discoloration by treatment has also been developed, but such a black perylene-based pigment is relatively expensive and is used in solar cells. In the case of backplanes for modules, there is a problem of increased cost

Method used

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  • Solar cell module back sheet, method for manufacturing solar cell module back sheet, and solar cell module
  • Solar cell module back sheet, method for manufacturing solar cell module back sheet, and solar cell module
  • Solar cell module back sheet, method for manufacturing solar cell module back sheet, and solar cell module

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Embodiment approach

[0156] In addition, the present invention is not limited to the structures of the embodiments. That is, in the above-mentioned embodiment, the mode in which the colored layer 2 is provided on the outermost surface has been described, but the present invention is not limited thereto. For example, a transparent or translucent layer may be provided on the surface of the colored layer 2 in the above-mentioned embodiment. hot melt adhesive layer.

[0157] In addition, in the said embodiment, the base material sheet 3 was demonstrated as white, but this invention is not limited to this, For example, you may make the base material sheet 3 transparent or translucent. Also in this case, the colored layer 2 may be laminated on the back side of the base sheet 3 .

[0158] In addition, even when the base sheet 3 is made white, it is not limited to the form of providing the white layer 5 as shown in the above-mentioned embodiment, and the design may be appropriately changed, and a white s...

Embodiment 1

[0165] The test results of the invention will be specifically described below through examples, but the invention is not limited to the following examples.

[0166]

[0167] The reflectance when the colored layer 2 of the back sheet 1 was formed by applying the coating liquid on the surface of the base material sheet 3 (white layer 5 ) was measured.

[0168] As the base sheet 3, a polyethylene film (W-PO (white) manufactured by Kewa Co., Ltd.) with a thickness of 110 μm was used as the white layer 5, and a polyester film with a thickness of 188 μm (S10 (transparent) manufactured by Toray Co., Ltd.) was used. A film laminated with a polytetrafluoroethylene film (25PWA manufactured by Asahi Glass Co., Ltd.) having a thickness of 25 μm was used as the base film 4 .

[0169] In addition, a red pigment (Ramic SR915R red manufactured by Dainichi Seika Co., Ltd.) with a concentration of 27% was used at a mixing ratio of 34.9%, and a blue pigment with a concentration of 27% (Ramic S...

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Abstract

The purpose of the present invention is to provide a solar cell module back sheet, the temperature of which hardly rises by being irradiated with solar rays even if taking on a black color in appearance and the color of which hardly changes even if being used over a long period of time while a cost increase is suppressed. This solar cell module back sheet is equipped with a colored layer including three or more kinds of color materials each having a different hue and a lightness value (L*) of 45 or more, wherein said colored layer has a lightness value (L*) of 40 or less. It is preferable that said three or more kinds of color materials are at least a red color material, a blue color material, and a yellow color material. It is also preferable that the solar cell module back sheet is equipped with a base sheet on which said colored layer is laminated. It is preferable that said base sheet is colored white and said colored layer is laminated on the surface side of said base sheet. It is also preferable that the base sheet is equipped with a base film and a white layer laminated on the surface side of said base film.

Description

technical field [0001] The present invention relates to a backsheet for a solar cell module as a unit constituting a solar cell, and a solar cell module using the same. Background technique [0002] In recent years, due to increasing awareness of environmental problems such as global warming, solar power generation as a green energy has attracted attention, and solar cells with various configurations have been developed. The solar cell is composed of a plurality of solar cell modules, and the solar cell module is formed by encapsulating and unitizing a plurality of parallel solar cell units. Such as Figure 5 As shown, the general structure of the solar cell module is that a light-transmitting substrate 62 made of glass or the like and a filler layer made of thermoplastic resin such as ethylene-vinyl acetate copolymer are laminated sequentially from the front side to the back side. 63. A plurality of solar cell units 64 as photovoltaic devices, a filler layer 65 that is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/20H01L31/049H01L31/18
CPCH01L31/0487H01L31/049B32B27/20H01L31/048Y02B10/12Y02E10/50G02B5/201B32B27/06B32B2457/12H01L31/0481H01L31/0547H01L31/056Y02E10/52Y10T29/49Y02B10/10
Inventor 伊原健治
Owner KEIWA INCORPORATED
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