Resin composition for solar cell sealing materials, master batch for solar cell sealing materials, and solar cell sealing material

A technology of solar cells and resin compositions, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of peeling off the surface of protective parts such as sealing materials, hindering electronic movement and deterioration of semiconductor components, etc., and achieve transparency and adhesion Good, good transparency, good dispersion effect

Active Publication Date: 2015-10-28
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the above Na + Moving toward the inside of the glass, the glass / sealing material, and the sealing material / semiconductor element, over time, Na + Accumulated on the surface of the power generation element, it will cause deterioration that hinders the movement of electrons in the semiconductor element
In addition, Na + Precipitation occurs at each interface during movement, resulting in a deterioration phenomenon in which the surface of protective parts such as sealing materials peels off

Method used

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  • Resin composition for solar cell sealing materials, master batch for solar cell sealing materials, and solar cell sealing material
  • Resin composition for solar cell sealing materials, master batch for solar cell sealing materials, and solar cell sealing material
  • Resin composition for solar cell sealing materials, master batch for solar cell sealing materials, and solar cell sealing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] [Manufacture of masterbatch for solar cell sealing material]

[0089] (A-1) Put 95 parts of EVA and 5 parts of (B-1) inorganic ion trapping agent into a super mixer (manufactured by Kawata Corporation), at a temperature of 25°C for 3 minutes Stirring under the conditions to obtain a mixture. Next, the above-mentioned mixture was put into a twin-screw extruder (manufactured by Puracon Co., Ltd. (Nippon Puracon Corporation)), extruded, and cut using a granulator, thereby obtaining a masterbatch for solar cell sealing material. .

[0090] Moreover, using 91.25 parts of (A-1) EVA and 8.75 parts of light stabilizers, the stabilizer masterbatch was obtained by the method similar to the above.

[0091] Also, using 85 parts of (A-1) EVA, 5 parts of crosslinking agent, 5 parts of crosslinking auxiliary agent, and silane coupling agent, a crosslinking agent masterbatch was obtained by the same method as above.

[0092] [Manufacture of solar cell sealing material]

[0093] Use...

Embodiment 2～8、 comparative example 1～5

[0102] The ethylene copolymer and the filler in Example 1 were changed to the raw materials and compounding amounts in Table 1 and Table 2, except that it was carried out under the same conditions as in Example 1, thereby obtaining Examples 2- 8 and the solar cell sealing materials and solar cell modules of Comparative Examples 1 to 5. In addition, the compounding quantity shown in Table 1 and Table 2 is a weight part.

[0103] Table 1

[0104]

[0105] Table 2

[0106]

[0107] [appearance evaluation]

[0108] Under the same conditions as above (145° C., 17 minutes), the obtained solar cell sealing material was heated and pressurized using the vacuum laminator to crosslink the sealing material, thereby obtaining a sample. Appearance evaluation was performed about the obtained sample by measuring the total light transmittance and haze using a haze meter (made by BYK Gardner).

[0109] [Peel Strength]

[0110] Adhesive evaluation was performed by measuring the peel str...

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Abstract

The purpose of the present invention is to provide a resin composition for solar cell sealing materials, which is capable of forming a solar cell sealing material with good resistance to PID, while having good transparency and suppressing decrease of adhesion to a light receiving surface-side protection glass even after long-term use. A resin composition for solar cell sealing materials according to the present invention contains an ethylene copolymer and an inorganic ion scavenger. The inorganic ion scavenger contains one or more compounds that are selected from the group consisting of oxides of pentavalent metals, oxides of hexavalent metals, oxides of heptavalent metals and metal phosphate salts. This resin composition for solar cell sealing materials contains 0.01-0.5 part by weight of the inorganic ion scavenger per 100 parts by weight of the ethylene copolymer.

Description

technical field [0001] This invention relates to the resin composition for solar cell sealing materials used for manufacture of a solar cell sealing material, and the masterbatch for solar cell sealing materials. In addition, the present invention relates to a solar cell sealing material and a solar cell module. Background technique [0002] From an ecological point of view, solar power generation systems (hereinafter, also referred to as solar cells) are widely used as clean energy, and technological developments aiming at further improving the efficiency of solar cells and prolonging their service life are also being advanced. [0003] A solar cell is composed of a plurality of solar cell modules. However, the power generation element incorporated in the solar cell module uses semiconductors such as silicon to directly convert sunlight energy into electrical energy to generate electricity. However, if the above-mentioned semiconductors are directly in contact with the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048C08K3/00C08L23/08C09K3/10
CPCC08K3/00C08L23/08C09K3/10H01L31/048H01L31/0481Y02E10/50
Inventor 高桥淳金子良大柳泽诚增子启介
Owner TOYO INK SC HOLD CO LTD
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