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US 6,660,556 B2Granted
Method of manufacturing a solar battery
AssigneeBridgestone Corporation
InventorsMasao Hashimoto, Yasuhiro Iino, Shinichiro Uchiyama
Life of this patent
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Abstract
A sealing film is used for sealing a solar cell, and including an EVA film formed of ethylene-vinyl acetate copolymer resin. The sealing film has concavities formed by embossing. A percentage defined by VH/VA×100% is in a range from 20% to 50%, wherein VH is the total volume of the concavities per unit area of the sealing film, and VA is the apparent volume of the sealing film which is the product of the maximum thickness of the film and the unit area.
Claims4
A method of manufacturing a solar battery comprising:
- laminating a front-side transparent protective member, a sealing layer, solar cells to be sealed by the sealing layer, another sealing layer for sealing the solar cells, and a back-side protective member to make a laminated body,
- placing the laminated body on a hot plate,
- heating said laminated body by the hot plate,
- pressurizing said laminated body by atmospheric pressure while the laminated body is being heated by the hot plate,
- wherein said sealing layers for sealing the solar cells are EVA films formed of ethylene-vinyl acetate copolymer resin, said EVA film having concavities formed by embossing, and a percentage defined by VH/VA×100% in a range from 5% to 35%, wherein VH is a total volume of said concavities per unit area of said sealing layer, and VA is an apparent volume of said sealing layer which is a product of a maximum thickness of the layer and the unit area.
2 more elements
Dependencies are inferred from the claim text.