Patent ID: 9029007
Filing Date: 2015-05-12
Classification: H01M,Y02E

Abstract:
1. A rechargeable battery comprising: a first metallic plate; a second metallic plate coupled to the first metallic plate together comprising five sides of a hexahedron and defining a cavity and an opening to the cavity being a sixth side of the hexahedron, the opening being defined between edges of parallel surfaces of at least two opposing sides of the hexahedron, at least one of the first metallic plate or the second metallic plate comprising a base and walls extending from at least two opposing peripheral sides of the base, and flange portions protruding from respective ones of the walls in at least one direction substantially parallel to a surface of the base; a generation member in the cavity and comprising at least one connection member at a side of the generation member proximate the opening; and a cap assembly comprising an insulator and at least one electrode lead coupled to the at least one connection member, the cap assembly closing the opening, wherein the insulator has a larger size than that of the opening and is forcibly fit into the opening, and the insulator has at least one side that is tapered relative to a respective surface of the parallel surfaces at an angle between about 1 degree and about 10 degrees along a direction extending toward the cavity, the at least one tapered side of the insulator being at a side of the opening corresponding to the edge of the respective surface of the parallel surfaces.