Patent ID: 8962167
Filing Date: 2015-02-24
Classification: H01M,Y02E,Y02P

Abstract:
1. A secondary battery comprising: an electrode assembly formed with a separator interposed between a cathode plate and an anode plate; a case for accommodating the electrode assembly; a cap assembly for sealing the case; and an insulating gasket disposed between the case and the cap assembly, wherein the cap assembly comprises a vent plate having a curved vent, an insulator including one or a plurality of protrusions, and a cap-down including one or a plurality of holes located corresponding to the protrusions so that the protrusions extend through the holes, and wherein the insulator is interposed between the vent plate and the cap down and between the cap down and the insulating gasket, and the cap down is interposed between the electrode assembly and the vent plate.