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Solar-cell-sealing sheet, solar cell module, and method for manufacturing same

A technology for solar cells and sealing sheets, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve problems such as manufacturing burden and cost increase, and achieve the effects of preventing the decline of power generation efficiency, simplifying manufacturing, and avoiding leakage

Active Publication Date: 2015-02-25
MITSUI CHEM TOHCELLO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the methods of Patent Documents 1 to 3 may not be able to prevent the above phenomenon due to the difference in heating and pressing conditions in the manufacturing process.
In addition, in the method of Patent Document 4, it is necessary to provide two layers of a transparent layer and a colored layer as the rear side sealing material, resulting in an increase in manufacturing burden and cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] The present invention will be described in more detail by way of examples below. In the following description, unless otherwise specified, "part" means "mass part", and "%" means "mass %". In addition, various physical properties of the polymer were measured by the following methods.

[0055] (1) Melting peak temperature:

[0056] Using a differential scanning calorimetry apparatus (manufactured by PerkinElmer Japan Co., Ltd., trade name DSC8000), a sample of about 5 mg was heated up to 0°C to 200°C at 320°C / min, and held at 200°C for 5 minutes. The temperature was lowered at 10°C / min to 200°C to 0°C, and then kept at 0°C for 5 minutes, then the endothermic curve was obtained when the temperature was raised at 10°C / min, and the apex of the melting peak was taken as the melting peak temperature. In addition, when a plurality of peaks were detected, the peak detected on the highest temperature side was defined as the melting peak temperature.

[0057] (2) Density:

[...

Synthetic example 1

[0063]

[0064] According to the method described in Japanese Patent Application Laid-Open No. 2011-12243, using dimethylsilylenebis(3-methylcyclopentadienyl)zirconium chloride as a metallocene catalyst, a compound containing 1-hexene and ethylene was obtained. prepolymerized catalyst.

[0065] Separately, 830 ml of dehydrated and purified hexane was placed in a stainless steel autoclave with an internal volume of 2 liters that had been fully replaced with nitrogen, and the inside of the system was replaced with a mixed gas of ethylene and hydrogen (hydrogen content: 0.7 mol%). Then, the inside of the system was brought to 60° C., and 1.5 mmol of triisobutylaluminum, 179 ml of 1-hexene, and 0.015 mg atom of the prepolymerized catalyst prepared above were added in terms of zirconium atoms.

[0066] Then, a mixed gas of ethylene and hydrogen having the same composition as above was introduced, and the total pressure was 3 MPaG to start polymerization. Furthermore, only the mi...

Embodiment 1

[0068] (Manufacture of light-receiving surface side sealing sheet)

[0069] 2,5-Dimethyl-2,5-bis(t- 0.1 part of butylperoxy)hexane, 0.4 part of t-butylperoxy-2-ethylhexyl carbonate, and 1.0 part of triallyl isocyanurate were used to obtain a resin composition. This resin composition was extruded with an extruder equipped with a T-die to form a resin sheet (light-receiving side sealing sheet) having a thickness of about 450 μm.

[0070] (Manufacture of back side seal sheet)

[0071] 1.0 parts of vinyltrimethoxysilane, 2,5-dimethyl-2,5-di(t-butylperoxide) 0.02 parts of hexane and 6 parts of a masterbatch (50% titanium dioxide concentration) containing titanium dioxide as a colorant were used to obtain a resin composition. This resin composition was extruded with an extruder equipped with a T-die to form a resin sheet (rear side sealing sheet) having a thickness of about 450 μm.

[0072] (Production of solar cell modules)

[0073] Using each of the above sealing sheets, 3.2 ...

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PUM

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Abstract

There is disclosed a pair of solar-cell-sealing sheets comprising a sealing sheet on each of a light-receiving side and a reverse-surface-side of a electricity-generating element of a solar cell module, wherein the solar-cell-sealing sheet is characterized in that a differential-scanning-calorimetry (DSC)-based melting-peak temperature of the reverse-surface-side sealing sheet is higher than the DSC-based melting-peak temperature of the light-receiving-surface-side sealing sheet, there being less wraparound of reverse-surface-side sealing material in the solar-cell-sealing sheet. Also disclosed are a solar cell module in which the light-receiving-surface-side sealing sheet and reverse-side sealing sheet of the solar-cell-sealing sheets are used, and a method of manufacturing the module.

Description

technical field [0001] The present invention relates to a solar cell sealing sheet, a solar cell module, and a manufacturing method thereof. Background technique [0002] Conventionally, in order to improve the power generation efficiency of a solar cell, it has been desired to condense incident light on a power generating element for a solar cell as efficiently as possible. Therefore, it is desired that the sealing material on the light-receiving surface side (front side) has as high transparency as possible, and transmits incident light without absorbing or reflecting it. [0003] On the other hand, as a sealing material on the back side (the side opposite to the light-receiving surface), a sealing material has been developed that incorporates a white colorant such as titanium dioxide, and passes through the reflection of light at the interface between the back surface and the light-receiving surface, and the light caused by the colorant The diffuse reflection of a plural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048
CPCH01L31/0481Y02E10/50H01L31/048B32B27/32C09D123/0815C09D123/0853C09D151/06C08L2203/204C08L2312/08B32B27/08B32B27/20B32B27/306B32B2264/102B32B2264/104B32B2307/402B32B2307/536B32B2457/12H01L31/0203H01L31/04
Inventor 田边胜清水克彦德弘淳
Owner MITSUI CHEM TOHCELLO INC
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