US2013056152A1PendingUtilityA1

Adhesive tape and solar cell module using the same

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Assignee: HITACHI CHEMICAL CO LTDPriority: Apr 26, 2006Filed: Nov 2, 2012Published: Mar 7, 2013
Est. expiryApr 26, 2026(expired)· nominal 20-yr term from priority
Inventors:Naoki FukushimaTakehiro ShimizuTakahiro Fukutomi
H10F 77/211H10F 71/00H10F 19/906H10F 19/00Y02E10/50C09J 163/00C09J 11/04H01B 1/22Y10T428/2804C09J 9/02C09J 9/00
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Claims

Abstract

The present invention provides an adhesive tape 10 for electrically connecting a plurality of solar battery cells, which adhesive tape has a metal foil 1 and an adhesive layer 2 composed of an adhesive provided on at least one surface of the metal foil 1 , and a solar battery module using the adhesive tape. The adhesive tape of the present invention can suppress the decrease in the product yield and can improve the connection workability of solar battery cells.

Claims

exact text as granted — not AI-modified
1 - 6 . (canceled) 
     
     
         7 . A method for producing a solar battery module comprising a plurality of solar battery cells, the method comprising the steps of:
 (a) providing a plurality of solar battery cells; and   (b) electrically connecting the plurality of solar battery cells by using adhesive tapes, wherein each adhesive tape comprises a metal foil, and adhesive layers, each comprising an adhesive, provided on at least one surface of the metal foil,   wherein the adhesive comprises an insulating adhesive composition but no conductive particle, and wherein the insulating adhesive composition comprises a film-forming material, a thermosetting resin and a curing agent for the thermosetting resin.   
     
     
         8 . The method according to  claim 7 , wherein the film-forming material is one selected from the group consisting of a phenoxy resin, a polyester resin and a polyamide resin. 
     
     
         9 . The method according to  claim 7 , wherein the film-forming material is a phenoxy resin. 
     
     
         10 . The method according to  claim 7 , wherein a weight-average molecular weight of the film forming material is 10000 to 10000000. 
     
     
         11 . The method according to  claim 7 , wherein the thermosetting resin is an epoxy resin. 
     
     
         12 . The method according to  claim 7 , wherein the metal foil is a copper foil or an aluminum foil. 
     
     
         13 . The method according to  claim 7 , wherein the adhesive layers are provided on both surfaces of the metal foil. 
     
     
         14 . A method for producing a solar battery module comprising a plurality of solar battery cells electrically connected through a metal foil, the method comprising the steps of:
 (a) providing a plurality of solar battery cells; and   (b) electrically connecting each solar battery cell to a metal foil by using an adhesive, wherein the adhesive comprises an insulating adhesive composition but no conductive particle, and the insulating adhesive composition comprises a film forming material, a thermosetting resin and a curing agent for the thermosetting resin.   
     
     
         15 . The method according to  claim 14 , wherein the adhesive is provided on a surface of the metal foil as adhesive layer, or the adhesive is provided on both surfaces of the metal foil as adhesive layers. 
     
     
         16 . The method according to  claim 14 , wherein the film-forming material is one selected from the group consisting of a phenoxy resin, a polyester resin and a polyamide resin. 
     
     
         17 . The method according to  claim 14 , wherein the film forming material is a phenoxy resin. 
     
     
         18 . The method according to  claim 14 , wherein a weight-average molecular weight of the film forming material is 10000 to 10000000. 
     
     
         19 . The method according to  claim 14 , wherein the thermosetting resin is an epoxy resin. 
     
     
         20 . The method according to  claim 14 , wherein the metal foil is a copper soil or an aluminum foil. 
     
     
         21 . A method for producing a solar battery module comprising a plurality of solar battery cells, the method comprising the steps of:
 (a) providing a plurality of solar battery cells; and   (b) electrically connecting the plurality of solar battery cells by using adhesive tapes, wherein each adhesive tape comprises a metal foil, and a plurality of adhesive layers, wherein each adhesive layer comprising an adhesive, provided on at least one surface of the metal foil,   wherein the adhesive comprises an Insulating adhesive composition but no conductive particle, and the insulating adhesive composition comprises a thermoplastic resin, a radically polymerizable compound and a radical polymerization initiator.   
     
     
         22 . The method according to  claim 21 , wherein the thermoplastic resin is selected from the group consisting of polyamides, phenoxy resins, poly(meth)acrylates, polyimides, polyurethanes, polyesters and polyvinylbutyrals. 
     
     
         23 . The method according to  claim 21 , wherein a weight-average molecular weight of the thermoplastic resin is 5000 to 150000. 
     
     
         24 . The method according to  claim 21 , wherein the radically polymerizable compound has a (meth)acryloyl group. 
     
     
         25 . The method according to  claim 21 , wherein the metal foil is a copper foil or an aluminum foil. 
     
     
         26 . The method according to  claim 21 , wherein the adhesive layers are provided on both surfaces of the metal foil. 
     
     
         27 . A method for producing a solar battery module comprising a plurality of solar battery cells electrically connected through a metal foil, the method comprising the steps of:
 (a) providing a plurality of solar battery cells; and   (b) electrically connecting each solar battery cell to a metal foil by using an adhesive,   wherein the adhesive comprises an insulating adhesive composition but no conductive particle, and the insulating adhesive composition comprises a thermoplastic resin, a radically polymerizable compound and a radical polymerization initiator.   
     
     
         28 . The method according to  claim 21 , wherein the adhesive is provided on a surface of the metal foil as adhesive layer, or the adhesive is provided on both surfaces of the metal foil as adhesive layers. 
     
     
         29 . The method according to  claim 21 , wherein the thermoplastic resin is selected from the group consisting of polyamides, phenoxy resins, poly(meth)acrylates, polyimides, polyurethanes, polyesters and polyvinylbutyrals. 
     
     
         30 . The method according to  claim 21 , wherein a weight-average molecular weight of the thermoplastic resin is 5000 to 150000. 
     
     
         31 . The method according to  claim 21 , wherein the radically polymerizable compound has a (meth)acryloyl group. 
     
     
         32 . The method according to  claim 21 , wherein the metal foil is a copper foil or an aluminum foil.

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