公开(公告)号：US20240347854A1

公开(公告)日：2024-10-17

申请号：US18754971

申请日：2024-06-26

申请人： LG Energy Solution, Ltd.

发明人： Min Hee Park ,  Sang Jun Park

IPC分类号： H01M50/30

CPC分类号： H01M50/394

摘要： A secondary battery and a battery pack including the secondary battery are disclosed. According to one aspect of the present invention, the secondary battery includes: a waterproof part configured to surround at least a portion of a circumference of the electrode assembly so that a gas within the exterior passes through the waterproof part, but a liquid within the exterior does not pass through the waterproof part; and a vent part provided in an inner surface of the exterior to provide a path through which the gas within the exterior is discharged to the outside when an internal pressure of the exterior exceeds a certain value.

公开(公告)号：US20220077526A1

公开(公告)日：2022-03-10

申请号：US17530770

申请日：2021-11-19

申请人： LG Energy Solution, Ltd.

发明人： Min Hee Park ,  Se Won Kim ,  Hun Cha ,  Jong Seung Na ,  Sang Woo Kim ,  Sang Jun Park

IPC分类号： H01M50/152 ,  H01M50/107 ,  H01M50/171 ,  H01M50/578

摘要： A cylindrical secondary battery includes a first gasket and a second gasket having a modified shape to secure hermetic sealability and insulation. The battery includes a cylindrical can for receiving an electrode assembly, a cap assembly located at the upper part of the cylindrical can, a first gasket for covering outer circumferential edges of a top cap and a venting member of the cap assembly, a current interrupt device (CID) located at the lower part of the cap assembly, and a second gasket along the outer circumferential edge of the current interrupt device. An upper end portion of the first gasket covers the upper surface of the outer circumferential edge of the top cap, and includes a recessed portion in its inner surface configured to prevent the first gasket from being brought into tight contact with the upper surface of the outer circumferential edge of the top cap.