Method for manufacturing solar cell module and solar cell module

Patent metadata

Field	Value
Publication number	US-2016005901-A1
Application number	US-201414771242-A
Country	US
Kind code	A1
Filing date	Feb 27, 2014
Priority date	Mar 1, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

Method for manufacturing a solar cell module in which a light-receiving side sealing film 13 A and a backside sealing film 13 B are each formed of a different resin composition from each other selected from a resin composition A and a resin composition B, both of the sealing films are heated when the pressurizing is initiated so as to reach to a minimum temperature X° C. and a maximum temperature Y° C., the resin composition A has a viscosity of 5.0×10 4 Pa·s or less at the temperature X° C., and the resin composition B has a viscosity of 7.0×10 4 Pa·s or less at the temperature X° C. and has a viscosity of 2.0×10 4 Pa·s or more at the temperature Y° C.

First claim

1 . A method for manufacturing a solar cell module comprising the steps of stacking a light-receiving side transparent protective member, a light-receiving side sealing film, a photovoltaic element, a backside sealing film and a backside protective member in this order to obtain a stack, and heating and pressurizing the stack to integrate the stack, wherein
the light-receiving side sealing film and the backside sealing film are each formed of a different resin composition from each other selected from a resin composition A and a resin composition B, both of the sealing films are heated when the pressurizing is initiated so as to reach to a minimum temperature X° C. and a maximum temperature Y° C., the resin composition A has a viscosity of 5.0×10 4 Pa·s or less at the temperature X° C., and the resin composition B has a viscosity of 7.0×10 4 Pa·s or less at the temperature X° C. and has a viscosity of 2.0×10 4 Pa·s or more at the temperature Y° C.

2 . The method according to claim 1 , wherein a smaller value of N−M (° C.) and N−L (° C.) is 8° C. or more, where M° C. is a temperature at which the resin composition B has a viscosity of 7.0×10 4 Pa·s, N° C. is a temperature at which the resin composition B has a viscosity of 2.0×10 4 Pa·s, and L° C. is a temperature at which the resin composition A has a viscosity of 5.0×10 4 Pa·s.

3 . The method according to claim 2 , wherein N is 85 to 125° C.

4 . The method according to claim 2 , wherein M is 70 to 95° C.

5 . The method according to claim 2 , wherein L is 65 to 90° C.

6 . The method according to claim 2 , wherein a larger value of M+(Y−X) and L+(Y−X) is 100° C. or less.

7 . The method according to claim 1 , wherein the resin composition A contains an ethylene-polar monomer copolymer, and the resin composition B contains an ethylene-polar monomer copolymer and a polyethylene.

8 . The method according to claim 7 , wherein the ethylene-polar monomer copolymer is an ethylene-vinyl acetate copolymer.

9 . The method according to claim 1 , wherein
the pressurizing and heating are performed by using a heat laminator provided with a rubber for pressurizing the stack and a heating board for heating the stack, the stack is mounted on the heating board so that the light-receiving side transparent protective member contacts with the heating board, and is pressurized by using the rubber from a side of the backside protective member.

10 . The method according to claim 1 , wherein the light-receiving side sealing film is formed of the resin composition A, and the backside sealing film is formed of the resin composition B.

11 . A solar cell module obtained by the method according to claim 1 .

Assignees

• Bridgestone Corp

Inventors

• Inamiya Takato
• Kataoka Hisataka
• ARAAKE Satoshi
• Kaga Norihiko
• TARUTANI Yasunori

Classifications

• H10F71/00

  Manufacture or treatment of devices covered by this subclass (patterning processes to connect thin photovoltaic cells in integrated devices, or assemblies of multiple devices, having photovoltaic cells H10F19/33; manufacture or treatment of encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells H10F19/80; manufacture or treatment of integrated devices, or assemblies of multiple devices, comprising at least one element in which radiation controls the flow of current H10F39/00) · CPC title

• H10F19/85 Primary

  Protective back sheets · CPC title

• H10F19/804 Primary

  Materials of encapsulations · CPC title

• H01L31/049

  Electricity · mapped topic

• H01L31/0481 Primary

  Electricity · mapped topic