Lee & Morse, P.C.
Secondary battery
A secondary battery including an electrode assembly; a case accommodating the electrode assembly; a cap plate covering the case; and an electrode terminal electrically connected to the electrode assembly, wherein the cap plate includes at least one bending induction groove at a periphery of a central portion of the cap plate in a region between an edge and the central portion of the cap plate.
SAMSUNG SDI CO., LTD.
H H Y
H01M H01M Y02E
inventional inventional additional
Hyunjin
Choi