Patent ID: 8501333

Claim:
A cap assembly for a secondary battery, coupled to an open end of a battery can receiving an electrode assembly in which a cathode plate and an anode plate are disposed with a separator being interposed between them, the cap assembly comprising: a top cap disposed on an uppermost portion in a protrusive form to form a cathode terminal; a safety element disposed below the top cap to contact the top cap; a safety vent disposed to contact the safety element; a current intercepting member having an upper portion welded to a lower end of the safety vent and a lower portion capable of connecting to the electrode assembly; a first gasket configured to surround the upper and side portions of an outer circumference of the current intercepting member to support the upper and side portions of the current intercepting member, the first gasket partially electrically insulating the current intercepting member and the safety vent from one another; and a second gasket configured to surround the rims of the top cap, the safety element, and the safety vent and having a lower end portion extending to surround the lower portion of the current intercepting member and contacting the lower portion of the first gasket.