Patent ID: 8962180
Filing Date: 2015-02-24
Classification: H01M,Y02E

Abstract:
1. A rechargeable battery, comprising: an electrode assembly; a case in which the electrode assembly is installed; a cap assembly coupled to an opening of the case and to an externally protruded terminal, the cap assembly including a cap plate having a terminal hole completely penetrating through the cap plate and through which the terminal protrudes; a first gasket between the terminal and the cap plate, the first gasket including a sealing portion; and a second gasket between the terminal and the cap plate, the second gasket having a blocking portion laterally overlapped with the sealing portion of the first gasket such that the sealing portion is between an innermost edge of the terminal hole and the blocking portion of the second gasket, wherein the second gasket includes: wherein the blocking portion protrudes toward the first gasket from the stepped portion, the blocking portion having a thickness that is smaller than a thickness of the stepped portion and being tightly adhered to an external circumferential surface of the terminal.