Patent ID: 6932651

Claim:
An electric-cell connecting structure for connecting a pair of electric cells ( 11 ), being disposed in series, which are welded to a closed end of the bottomed cylinder ( 13 ) of one of the electrode cells, and to the other seal plates ( 14 ) of another electric cell ( 11 ), each electric cell having a bottomed cylinder ( 13 ) at a negative electrode side, and a seal plate ( 14 ) at a positive electrode side which is attached, by way of an insulating member ( 15 ), to an open end portion of the bottomed cylinder ( 13 ) so as to seal the open end of the bottomed cylinder ( 13 ), wherein said connecting bus bar ( 12 ) is integrally formed by a negative opposing section ( 27 ) which is smaller in plate thickness than that of the closed end of the bottomed cylinder ( 13 ) in an arrangement to be opposed each other, said negative opposing section partially including a negative weld plate section ( 27 a ) so as to be welded to the closed end of the bottomed cylinder ( 13 ); a positive opposing section ( 28 ) which is smaller in plate thickness than that of the seal plates ( 14 ) in an arrangement to be opposed each other, said positive opposing section partially including a positive weld plate section ( 28 a ) so as to be welded to the seal plate ( 14 ); and a coupling section ( 29 ) for connecting together said negative opposing section ( 27 ) and said positive opposing section ( 28 ), and further wherein the connecting bus bar ( 12 ) is formed such that a part of the connecting bus bar ( 12 ), without including said negative weld plate section ( 27 a ) and the positive weld plate section ( 28 a ), is smaller or equal in thickness than that of any one of sections of said closed end of the bottomed cylinder ( 13 ) and the seal plates ( 14 ) which has a thinner thickness thereof.