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 batteries in a physical contact manner, wherein the connection member comprises terminal connection units for electrically connecting two or more battery cells arranged in the lateral direction in a physical contact manner, each of the terminal connection units comprising:
(a) an outer circumferential contact part configured to correspond to the external shape of an electrode terminal of the corresponding battery cell, the outer circumferential contact part contacting the electrode terminal of the corresponding battery cell at a region adjacent to the outer circumference of the electrode terminal, the outer circumferential contact part having a predetermined width; and (b) upward protruding parts tapered upward from the outer circumferential contact part toward a central axis of each terminal connection unit for elastically supporting the corresponding battery cell, the terminal connection units being electrically connected to each other in correspondence to the number of the battery cells arranged in the lateral direction, wherein a central contact part of the upward protruding parts is constructed in an upward protruding bridge structure having an opening.