Lg Chem, Ltd

Hakjun Lee

Yongho Cho

Seunghyun Bang

Gi-Hwan Kwon

Hosang Kwon

Jongho Park

Yong-ho Cho

Joonyoung Shin

Man-Chul Hur

Bong Hyup Kang

Ki Hyun Jeon

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.

Electrical connecting member for secondary battery

Disclosed herein is a battery pack constructed in a structure in which a plurality of secondary battery cells are electrically connected to one another via a connection member while the secondary battery cells are mounted in a receiving part of a pack case having no partition, wherein the connection member is located between the battery cells arranged in the longitudinal direction or in both the longitudinal direction and the lateral direction, the connection member is connected, in a mechanical coupling manner, to a lower electrode terminal of the front battery cell in the longitudinal direction and/or to an upper electrode terminal of the rear battery cell in the longitudinal direction, and the connection member is elastically pressed while the connection member is located between the battery cells.

Secondary battery pack based on mechanical connection manner

Disclosed herein are a connection member for electrically interconnecting a plurality of battery cells in a battery pack in which the battery cells are mounted, wherein the connection member includes at least two terminal contact parts, which are connected to electrode terminals of neighboring battery cells, and a connection part for interconnecting the terminal contact parts, and wherein the terminal contact parts are lower in height, by a size corresponding to the thickness of a pack case, than the connection part such that the connection member connects the electrode terminals of the battery cells while the connection member is mounted on the outer surface of the pack case, and a battery pack including the same. Consequently, the connection member according to the present invention has the effect of effectively interconnecting the electrode terminals of the battery cells through a simple assembly process. Also, the connection member according to the present invention can be directly mounted on the pack case without using an additional auxiliary member.

Connection-member for electrical connection of battery cells

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, for minimizing the change of resistance at the contact region against an external force and restraining a possibility that the electrode terminal of the lower battery cell is depressed, 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.

Disclosed herein are a safety device for secondary batteries that is capable of pressing a piezoelectric element using a seesaw member, which is constructed in a variable fixing structure, to generate electric current when a battery cell swells due to the abnormal operation or the degradation of the battery, and controlling the operation of the battery according to the generated electric current using a protection circuit module, thereby securing the safety of the battery, and a battery pack including a battery cell, which has low mechanical strength and high deformability, mounted in a frame member having the safety device, whereby the safety of the battery is improved and the assembly efficiency of the battery pack is improved.

Growing community of inventors

Seoul, South Korea

Hakjun Lee