Patent ID: 9209449
Filing Date: 2015-12-08
Classification: H01H,H01M,Y02E,Y02P

Abstract:
1. A rechargeable battery comprising: an electrode assembly comprising a first electrode, a second electrode, and a separator between the first and second electrodes; a case housing the electrode assembly; a cap plate covering an opening of the case; an electrode terminal extending through the cap plate; a lead tab connecting the electrode terminal and the electrode assembly and including a fuse part between the electrode assembly and the electrode terminal, the fuse part defining a first discharge path therethrough; and an auxiliary discharge path between the electrode assembly and the electrode terminal and between opposite sides of the fuse part and having a second electrical resistance value greater than a first electrical resistance value of the first discharge path of the fuse part, wherein the fuse part is configured to break and disconnect the first discharge path when the rechargeable battery is in a short-circuited state such that current is passed between the electrode assembly and the electrode terminal through the auxiliary discharge path.