Electrical connecting member for secondary battery

摘要

Disclosed herein is a connection member for secondary batteries to achieve the electrical connection in a battery pack including two or more cylindrical secondary batteries in a physical contact manner, the connection member including an outer circumferential contact part contacting an electrode terminal of a lower battery cell along the outer circumferential region of the electrode terminal of the lower battery cell, such that the outer circumferential contact part can be electrically connected to the electrode terminal of the lower battery cell in a surface contact manner and a central contact part contacting an electrode terminal of an upper battery cell or the central region of a sidewall of the battery pack for providing an elastic contact force to the entire connection member mounted between the electrode terminals of the respective battery cells or between the electrode terminals of the battery cells and the sidewall of the battery pack.

主权项

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 terminal connection unit further comprises:
a depressed contact part disposed on the central axis of the terminal connection unit such that the depressed contact part is depressed to a predetermined depth from the protruding coupling parts, the depressed contact part contacting the electrode terminal of the upper battery cell, and wherein the terminal connection unit is provided at one side thereof with a circuit connection terminal part.