Patent ID: 7597994

Claim:
A battery pack, comprising: a flat and approximately prismatic outer case including a pair of divided-shell bodies, an arbitrary range of at least one principal outer face of at least one of the divided-shell bodies being formed of a plastic film member, and a remaining portion of each of said divided-shell bodies being formed of a resin molding, said plastic film member being integrated with at least one said resin molding such that said resin molding, integral with said plastic film member, together comprise a same respective one of said divided-shell bodies, said at least one resin molding including a frame structure defining an oven region bounded peripherally by said frame structure, said open region being closed exclusively by the plastic film member; at least one rechargeable battery being housed in a planar manner within said outer case; and an externally accessible connection terminal connected to the rechargeable battery, the external connection terminal being accessibly exposed at a portion of said case where the resin molding is formed.