Solar Cell Module and Method of Manufacturing Solar Cell Module
A solar cell module capable of suppressing reduction of the quantity of power generation while retaining adhesive strength of a laminated resin film also when exposed to environment influenced by heat, moisture, light (ultraviolet light) etc. over a long period is obtained. This solar cell module ( 1 ) comprises a plurality of solar cells ( 10 ) electrically connected with each other by a tab electrode ( 20 ), a filler ( 40 ) for sealing the plurality of solar cells ( 10 ) and a laminated resin film ( 30, 130, 230 ), arranged on at least one surface of the filler ( 40 ), in which a resin film ( 31, 231 ) consisting of PET resin, an adhesive film ( 32, 132, 232 ) consisting of a copolymer of α-olefin and an ethyleny unsaturated silane compound and a weather-resistant resin film ( 33, 133, 233 ) consisting of PVDF resin are laminated successively from the side of the solar cells ( 10 ).
1 . A solar cell module comprising:
a plurality of solar cells ( 10 ) electrically connected with each other;
a filler layer ( 40 ) for sealing said plurality of solar cells; and
a laminated resin film ( 30 , 130 , 230 ), arranged on at least one surface of said filler layer, in which a first resin film ( 31 , 231 ), an adhesive film ( 32 , 132 , 232 ) consisting of resin containing α-olefin and an ethyleny unsaturated silane compound and a second resin film ( 33 , 133 , 233 ) having weather resistance are laminated successively from the side of said solar cells.
2 . The solar cell module according to claim 1 , wherein
the adhesive film of said laminated resin film contains a copolymer of said α-olefin and the ethyleny unsaturated silane compound.
3 . The solar cell module according to claim 1 , wherein
the first resin film of said laminated resin film includes a substrate film ( 231 a ) and a gas barrier layer ( 231 b ), and
said gas barrier layer is arranged at least on a side of said substrate film closer to said adhesive film.
4 . The solar cell module according to claim 3 , wherein
said gas barrier layer includes an aluminum oxide layer.
5 . The solar cell module according to claim 1 , wherein
at least one of the adhesive film and the second resin film of said laminated resin film contains an ultraviolet absorber.
6 . The solar cell module according to claim 1 , wherein
said solar cells are of a double-incidence type.
7 . The solar cell module according to claim 1 , wherein
the first resin film of said laminated resin film contains polyethylene terephthalate.
8 . The solar cell module according to claim 1 , wherein
the second resin film, having weather resistance, of said laminated resin film contains polyvinylidene fluoride.
9 . The solar cell module according to claim 1 , wherein
said laminated resin film is arranged on one surface of said filler layer, and
a glass plate ( 50 ) is arranged on another surface of said filler layer.
10 . A method of manufacturing a solar cell module, comprising steps of:
preparing a plurality of solar cells ( 10 ) electrically connected with each other;
heat-treating a first resin film ( 31 , 231 ) thereby previously thermally shrinking said first resin film; and
thereafter integrating said plurality of solar cells, a filler layer ( 40 ), said first resin film, an adhesive film ( 32 , 132 , 232 ) consisting of resin containing α-olefin and an ethyleny unsaturated silane compound and a second resin film ( 33 , 133 , 233 ) having weather resistance by performing heating/pressure-bonding in a laminated state.
11 . The method of manufacturing a solar cell module according to claim 10 , wherein
said step of previously thermally shrinking said first resin film
includes a step of previously thermally shrinking said first resin film under a temperature condition substantially identical to a temperature condition for said step of performing integration by carrying out heating/pressure-bonding.
12 . The method of manufacturing a solar cell module according to claim 10 , wherein
said adhesive film contains a copolymer of said α-olefin and the ethyleny unsaturated silane compound.
13 . The method of manufacturing a solar cell module according to claim 10 , wherein
said first resin film includes a substrate film ( 231 a ) and a gas barrier layer ( 231 b ), and
said gas barrier layer is arranged at least on a side of said substrate film closer to said adhesive film.
14 . The method of manufacturing a solar cell module according to claim 13 , wherein
said gas barrier layer includes an aluminum oxide layer.
15 . The method of manufacturing a solar cell module according to claim 10 , wherein
at least one of said adhesive film and the second resin film contains an ultraviolet absorber.
16 . The method of manufacturing a solar cell module according to claim 10 , wherein
said solar cells are of a double-incidence type.
17 . The method of manufacturing a solar cell module according to claim 10 , wherein
said first resin film contains polyethylene terephthalate.
18 . The method of manufacturing a solar cell module according to claim 10 , wherein
said second resin film having weather resistance contains polyvinylidene fluoride.
19 . The method of manufacturing a solar cell module according to claim 10 , wherein
said step of performing integration by carrying out heating/pressure-bonding
includes a step of performing integration by carrying out heating/pressure-bonding in a state successively arranging said first resin film, said adhesive film and said second resin film on one surface of said filler layer while arranging a glass plate ( 50 ) on another surface of said filler layer.