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Sealing Sheet for Solar Cells

A solar cell and sealing sheet technology, which is used in household sealing, applications, circuits, etc., can solve the problem of unwinding the sealing sheet for solar cells smoothly, and achieve the effect of less air residue.

Active Publication Date: 2016-09-21
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the sealing sheets for solar cells adjacent to each other in the internal and external directions are integrated with each other, and a phenomenon called blocking occurs in which the sealing sheets for solar cells cannot be unwound smoothly during use.

Method used

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  • Sealing Sheet for Solar Cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0166] 95 parts by mass of an ethylene-octene random copolymer (manufactured by Dow Chemical Co., Ltd., trade name: Engage 8200, MFR: 5, octene content: 10.1 mol%) as an ethylene-α-olefin random copolymer and ethylene - 5 parts by mass of ethylene-octene block copolymer of α-olefin block copolymer (manufactured by Dow Chemical Co., Ltd., trade name: Infuse D9100, MFR: 1, octene content: 12.8 mol%), mixed in the above ratio To make a resin composition, the resin composition is melt-kneaded at a set temperature of 200° C. using a 40 mmφ single-screw extruder equipped with a T-die, and using a rubber roller with a surface roughness Rzjis of 40 μm. Cast between casting rolls at °C, and quenched to form a film, thereby obtaining a sealing sheet with a thickness of 0.5 mm and embossed on both sides. Moreover, using the obtained sealing sheet, the solar cell module was produced as mentioned above. Table 1 shows the evaluation results.

Embodiment 2

[0168] In Example 1, except that the rubber roller whose surface roughness Rzjis was 40 μm was changed to a rubber roller whose surface roughness Rzjis was 15 μm, a solar cell sealing sheet and a solar cell module were produced in the same manner as in Example 1, Make an evaluation.

Embodiment 3

[0170] In Example 1, the resin composition was changed to 90 parts by mass of LLDPE (manufactured by Prime Polymer Co., Ltd., trade name: Evolue P SP9048, MFR: 4) and LLDPE (manufactured by Prime Polymer Co., Ltd., trade name: NEO-ZEX0234N , MFR: 2) Except having mixed 10 mass parts of resin compositions in the said ratio, it carried out similarly to Example 1, produced the sealing sheet for solar cells, and a solar cell module, and evaluated them.

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Abstract

A sealing sheet for a solar cell, characterized in that it has a resin layer (S) composed of a resin composition containing a polyolefin resin, and the storage elastic modulus of the resin layer (S) at 25° C. is 200 MPa or less, And at least one side of the resin layer (S) is a sheet surface of the above sealing sheet, and the sheet surface satisfies the following conditions (a), (b) and (c). (a) The coefficient of dynamic friction on the strengthened glass of the whiteboard is 1.5 or less; (b) The surface roughness Rzjis is 0.1 to 50 μm; (c) The coefficient of static friction on the strengthened glass of the whiteboard is 1.5 or less.

Description

technical field [0001] The present invention relates to a sealing sheet for solar cells and a solar cell module including the sealing sheet. Background technique [0002] A solar cell module composed of silicon and selenium semiconductor wafers is formed by laminating solar cell sealing sheets made of resins such as ethylene-vinyl acetate copolymers and polyethylene on both sides of solar cell elements, and sealing The upper surface of the sheet is overlapped with the upper protector, the lower surface is overlapped with the lower protector, degassed and heated in a vacuum, thereby sealing the solar cell element with a solar cell sealing sheet, and sealing the solar cell element through the solar cell sealing sheet. It is integrated with the upper and lower protection parts. [0003] The solar cell encapsulating sheet is usually produced in a long shape by extrusion molding, and is stored and transported in a state of being wound into a roll body around a core before use. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048H01L31/049B32B27/08B32B27/18B32B27/32C08L23/08
CPCH01L31/0481B32B27/08B32B27/18B32B27/32B32B2250/02B32B2307/306B32B2307/3065B32B2307/4026B32B2307/412B32B2307/54B32B2307/558B32B2307/712B32B2307/7246B32B2457/00B32B2581/00C08L23/08C08L23/0815H01L31/049Y02E10/50
Inventor 西冈润谷口浩一郎宫下阳大塚道子福田晋也
Owner DAI NIPPON PRINTING CO LTD
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