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Solar cell sealing sheet, solar cell module and manufacturing method thereof

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

Active Publication Date: 2016-10-12
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 2

[0075] (Manufacture of light-receiving surface side sealing sheet)

[0076] Except for ethylene-butene copolymer (trade name tafmer A4085 manufactured by Mitsui Chemicals, melting peak temperature 72°C, MFR3.6g / 10min (190°C), density 885kg / m 3, Shore A hardness 84) 100 parts in addition to being mixed with the resin composition of 1 part of tert-butyl peroxy-2-ethylhexyl carbonate and 1 part of triallyl isocyanurate, the same as in Example 1 In this manner, a light-receiving side sealing sheet with a thickness of about 450 μm was molded.

[0077] (Manufacture of back side seal sheet)

[0078] In the same manner as in Example 1, a rear side sealing sheet having a thickness of about 450 μm was molded.

[0079] (Production of solar cell modules)

[0080] Using each of the above sealing sheets, it carried out similarly to Example 1, and produced the solar cell module. As a result of visual confirmation through the glass, no leakage of the colorant was observed.

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Abstract

The present invention discloses a solar cell sealing sheet with reduced leakage of a sealing material on the back side, a solar cell module using the light-receiving side sealing sheet and a back side sealing sheet of the solar cell sealing sheet, and a manufacturing method thereof. The solar cell sealing sheet that prevents the leakage of the sealing material on the back side is characterized in that it is a pair of solar cell sealing sheets composed of a light-receiving side sealing sheet and a back side sealing sheet corresponding to the power generating elements of the solar cell module, and the back side The melting peak temperature of the sealing sheet by differential scanning calorimetry (DSC) is higher than the melting peak temperature of the sealing sheet on the light-receiving side by differential scanning calorimetry (DSC).

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 Patents(China)
IPC IPC(8): H01L31/048B32B27/08B32B27/20B32B27/30B32B27/32C09D123/08C09D151/06
CPCH01L31/048H01L31/0481Y02E10/50B32B27/32C09D123/0815C09D123/0853C09D151/06C08L2203/204C08L2312/08B32B27/08B32B27/20B32B27/306B32B2264/102B32B2264/104B32B2307/402B32B2307/536B32B2457/12H01L31/0203H01L31/04
Inventor 田边胜清水克彦德弘淳
Owner MITSUI CHEM TOHCELLO INC
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