Patent ID: 8815426
Filing Date: 2014-08-26
Classification: H01M,Y02E,Y02P,Y02T,Y10T

Abstract:
1. A prismatic sealed secondary cell comprising: a flat electrode assembly in which a first electrode plate and a second electrode plate having a different polarity from that of the first electrode plate, both of which respectively have a core exposed portion at one edge thereof in the width direction, are laminated or spirally wound with a separator interposed therebetween so that the respective core exposed portions may point in the laterally opposite directions; a current collector plate member joined to the first electrode plate; an external output terminal electrically connected to the first electrode plate via the current collector plate member; and a prismatic cell case housing the flat electrode assembly, wherein the current collector plate member comprises a pair of current collector plates, the pair of current collector plates are disposed on a flat portion in the outermost surface of the core exposed portion of the first electrode plate constituting the flat electrode assembly so that the pair of current collector plates sandwich the flat portion in the thickness direction, a columnar connection conductive member is interposed between two-divided core exposed portion laminates in the flat portion sandwiched between the pair of current collector plates, the pair of current collector plates, the columnar connection conductive member and the two-divided core exposed portion laminates are welded to each other, one of the pair of current collector plates is not connected with the other of the pair of current collector plates on an end side of the flat electrode assembly to which the core exposed portion of the first electrode protrudes, and a circumference of the columnar conductive member is covered with a resin reinforcing member.