公开(公告)号：US20230079224A1

公开(公告)日：2023-03-16

申请号：US17798732

申请日：2021-04-05

申请人： LG ENERGY SOLUTION, LTD.

发明人： Sung Min CHU ,  Jae Won LIM

IPC分类号： H01M50/54 ,  H01M50/46 ,  H01M50/474 ,  H01M10/04 ,  H01M50/107

摘要： A secondary battery includes an electrode assembly having a negative electrode, a positive electrode tab protruding to a first side, a negative electrode tab protruding to a second side, and a through-hole; an upper can having a flat planar portion and a circumferential portion protruding in a vertical direction along an edge of the flat planar portion; a lower can having a flat planar portion and a circumferential portion protruding in the vertical direction along an edge of the flat planar portion; and a center pin configured to apply elastic force in the vertical direction when being inserted into the through-hole. The center pin applies the elastic force to allow the negative electrode tab to be in direct contact with the lower can and allow the positive electrode tab to be in direct contact with the upper can.