Patent ID: 8974926
Filing Date: 2015-03-10
Classification: H01M,Y02E

Abstract:
1. A secondary battery comprising: an electrode assembly comprising a positive electrode tab and a negative electrode tab; a can in which the electrode assembly is received; an insulation case inserted into a top opening of the can, the insulation case having a first hole and a second hole through which the positive electrode tab and the negative electrode tab pass; a protective circuit module disposed on the insulation case, the protective circuit module being electrically connected to the positive electrode tab and the negative electrode tab; a cap assembly comprising a cap plate disposed on the protective circuit module to close the top opening of the can, the cap plate being electrically connected to the protective circuit module and wherein the cap plate defines a through hole and wherein an electrode terminal having a first width, a first length a first height is inserted into the through hole; and a bottom cover under the can, wherein the bottom cover has an insertion hole with a protrusion that extends outward from the bottom surface of the can within the opening so as to define an opening having a shape that has a first width, first length and first depth corresponding to length, width and height of the electrode terminal such that an electrode terminal of a secondary battery having the first width, first length and first height is positionable within the insertion hole so as to permit secondary batteries to be connected.