Patent ID: 9099695
Filing Date: 2015-08-04
Classification: H01M,Y02E,Y02P

Abstract:
1. A battery pack, comprising: a bare cell including a can, wherein the can includes an opening on one side, and a cap plate sealing the opening of the can, wherein the cap plate has at least one groove formed on one surface; a circuit board including at least one lead tab, wherein the lead tab is coupled to the cap plate by a fixing body; and a coupling member having an upper surface and positioned within the at least one groove of the cap plate so that the upper surface of the coupling member does not protrude from the at least one groove above the cap plate wherein the coupling member defines an opening that receives the fixing body to be coupled with the fixing body in the groove opening of the coupling member wherein the opening in the coupling member begins at the level of the cap plate and is recessed below the cap plate wherein the coupling member has a head unit that directly contacts a lower surface of the cap plate and a rod unit that passes through the cap plate, wherein the coupling member and a portion of cap plate surrounding the at least one groove of the bare cell are made of different materials, the coupling member is made of a material having higher mechanical strength than aluminum, and a lower diameter of the rod unit is larger than an upper diameter of the rod unit.