Patent ID: 9722228
Date: 2017-08-01
CPC Classifications: H01M,H01R,Y02E

Claim:
1. A member (connection member) for secondary batteries to achieve the electrical connection in a battery pack including two or more cylindrical secondary battery cells in a physical contact manner, wherein the connection member comprises a terminal connection unit for connecting battery cells arranged in the longitudinal direction in series to each other, the terminal connection unit comprising: (a) an outer circumferential contact part configured to correspond to an external shape of an electrode terminal of a lower battery cell, the outer circumferential contact part contacting the electrode terminal of the lower battery cell at a region adjacent to the outer circumference of the electrode terminal, the outer circumferential contact part having a predetermined width; (b) upward protruding parts tapered upward from the outer circumferential contact part toward a central axis of the terminal connection unit for elastically supporting the lower battery cell; and (c) protruding coupling parts protruding from the upward protruding parts to a predetermined height such that the protruding coupling parts can be coupled to an electrode terminal of an upper battery cell, wherein the outer circumferential contact part is further provided at the outer circumference thereof with one or more downward extensions constructed in a structure to partially cover an upper-end side of the lower battery cell, and wherein coupling protrusions protrude from the inner sides of the protruding coupling parts in the shape of a hemispherical protrusion.