Patent ID: 7662512
Filing Date: 2010-02-16
Classification: H01G,H01M,Y02E,Y02P

Abstract:
1. A square-shaped storage battery comprising: a rectangular accumulator element; a sealed case having a square tube enclosing the accumulator element and at least one lid for closing off an opening of the square tube, wherein the at least one lid is in the form of a rectangular plate with a general surface and has convexities protruding from four corners of the general surface away from the accumulator element; and a resin plate comprised of an insulating hard resin and interposed between the sealed case and the accumulator element for suppressing movement of the accumulator element relative to the sealed case, wherein the accumulator element has an end surface facing the at least one lid of the sealed case and a peripheral surface contiguous to the end surface and facing a peripheral surface of the square tube, and wherein the resin plate comprises a flat plate disposed between and in direct contact with the lid of the seal case and the end surface of the accumulator element, a skirt bent at right angle relative to the flat plate and disposed between and in direct contact with the peripheral surface of the square tube and the peripheral surface of the accumulator element, and a through-hole via which the accumulator element and the convexities are linked.