Patent ID: 9105890
Filing Date: 2015-08-11
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A secondary battery comprising: an upper battery assembly comprising an upper can housing a cap unit to be electrically connected to an external device and a gasket for insulating the cap unit and the upper can; and a lower battery assembly comprising an electrically conductive lower can housing an electrode assembly, wherein the gasket contacts the upper can directly adjacent the overlapping region, and wherein the cap unit and the upper can are combined by clamping, and wherein the upper and the lower battery assemblies are combined by a screw engagement using threads formed on a lower portion of the upper can and an upper portion of the lower can, welding between a lower portion of the upper can and an upper portion of the lower can, or sleeves formed on one of a lower portion of the upper can and an upper portion of the lower can.