Patent ID: 7524578

Claim:
A battery comprising: a can body having a concave portion for accommodating an electrode body, formed by shallow drawing, and a flange formed at a peripheral edge of an opening end; and a metal cover for sealing the opening end of the concave portion of the can body, wherein the electrode body in which a positive electrode and a negative electrode are wound in a spiral shape with a separator interposed therebetween, and a non-aqueous electrolyte solution in which an electrolyte is dissolved in a non-aqueous solvent are accommodated in the can body, and the can body is bonded to be integrated with the metal cover at the flange of the can body, whereby the electrode body and the nonaqueous electrolyte solution are sealed in the can body, the flange is formed in a rectangular shape including four sides, and a flange portion including one of the four sides is a wide flange portion formed so as to have a flange width larger than that of a flange portion including the remaining sides, a protection circuit is attached to the wide flange portion, and the protection circuit is incorporated to be modulized in a substrate or a resin molding.