Patent ID: 7736796

Claim:
A battery pack comprising: a plurality of flat prismatic batteries arranged face to face, each battery having one electrode terminal protruding from one end face in a height direction of a flat prismatic battery case and the end face or a side face of the battery serving as the other electrode terminal; and a connector for connecting the adjacent prismatic batteries, the connector including a flat part that is welded to one electrode terminal of one prismatic battery of the adjacent prismatic batteries, and a cylindrical part that is fitted onto and welded to the other electrode terminal of the other prismatic battery, the cylindrical part being formed in an attachment part that extends from the flat part through an upright part in a direction in which the prismatic batteries are aligned, wherein the upright part extends at right angles from one end of the flat part, and extends in a substantially parallel direction to the height direction of the flat prismatic battery case.