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Solar cell sealing material and solar cell module produced by using same

A technology for solar cells and packaging materials, applied in electrical components, sealing devices, circuits, etc., can solve the problems of solar cell circuit corrosion, interface peeling, adverse effects, etc. and excellent heat resistance

Inactive Publication Date: 2013-05-01
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when using EVA sheets to manufacture solar cell modules, depending on various conditions such as heating and pressing, there are problems as follows: acetic acid gas is generated due to thermal decomposition of EVA, which adversely affects the working environment and manufacturing equipment, or solar cell damage occurs. Corrosion of circuits, peeling at the interface with solar cell elements, front sheets, back sheets, etc.

Method used

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  • Solar cell sealing material and solar cell module produced by using same
  • Solar cell sealing material and solar cell module produced by using same
  • Solar cell sealing material and solar cell module produced by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0229] A resin composition obtained by mixing (X-1) and (W-1) at a mass ratio of 95:5 was used in the (I) layer, and (A-1) was used as the (II) layer The resin composition mixed with (B-1) at a mass ratio of 95:5 was obtained by using double The T-die method of the shaft extruder, after co-extrusion molding under the condition of resin temperature 180~220 ℃, the casting roll is used for rapid film forming at 20 ℃, and the thickness of each layer is obtained as (I) / (II) / (I)=0.09mm / 0.27mm / 0.09mm sheet. Table 1 shows the results of evaluating various properties using the obtained sheet.

Embodiment 2）

[0231] In Example 1, except that the lamination structure is changed to (I) layer / (II) layer, and the thickness of each layer is (I) / (II)=0.09mm / 0.36mm, the same as in Example 1 Tablets were obtained in the same manner. Table 1 shows the results of evaluating various properties using the obtained sheet.

Embodiment 3）

[0233] In Example 1, a resin composition obtained by mixing (A-1) and (B-1) at a mass ratio of 80:20 was used as the (II) layer, and the thickness of each layer was (I) / ( II) / (I)=0.045mm / 0.36mm / 0.045mm was changed, and the sheet|seat was obtained similarly to Example 1 except having changed. Table 1 shows the results of evaluating various properties using the obtained sheet.

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PUM

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Abstract

Provided are a solar cell sealing material with which solar cell modules can be formed easily and that has excellent adhesiveness, transparency, heat resistance, and long-term stability in adhesive force, and a solar cell module produced by using the solar cell sealing material. The solar cell sealing material includes at least an adhesive layer (layer (I)) and a layer (layer (II)) made of a resin composition (C) that contains an ethylene-a-olefin random copolymer (A) satisfying the following condition (a) and an ethylene-a-olefin block copolymer (B) satisfying the following condition (b). (a) The crystal melting heat quantity measured at a heating rate of 10 DEG C / minute in differential scanning calorimetry is 0 to 70 J / g. (b) The crystal melting peak temperature measured at a heating rate of 10 DEG C / minute in differential scanning calorimetry is 100 DEG C or higher, and the crystal melting heat quantity is 5 to 70 J / g.

Description

technical field [0001] The present invention relates to an encapsulation material for a solar cell element in a solar cell module and a solar cell module manufactured using the encapsulation material, and in detail, relates to easy formation of a solar cell module and adhesion, long-term stability of adhesive force, and transparency A solar cell encapsulation material excellent in heat resistance, etc., and a solar cell module made using the encapsulation material. Background technique [0002] A solar cell is a power generating device that directly converts the light energy of the sun into electricity. Solar power generation has the following characteristics: it does not need to burn oil and other fuels during power generation, and does not produce greenhouse effect gases (such as CO 2 etc.), hazardous waste (such as crude oil ash, heavy putty), so it has been valued as a clean energy source in recent years. Solar cells are made by wiring multiple solar cell elements (bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042B32B27/32C08L23/04C09K3/10
CPCC08L23/0807C08L53/00C09K2200/0617Y02E10/50C09K3/10C09K2200/062C09J123/08H01L31/0481Y10T428/28Y10T428/2878B32B27/32C08L23/04H01L31/042H01L31/048
Inventor 大塚道子西冈润谷口浩一郎
Owner DAI NIPPON PRINTING CO LTD
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