公开(公告)号：EP4401181A1

公开(公告)日：2024-07-17

申请号：EP23215581.2

申请日：2023-12-11

申请人： Samsung SDI Co., Ltd.

发明人： PARK, Seung Young ,  KIM, Gwi Jae ,  KIM, Hae Ju ,  CHOI, Woo Sung

IPC分类号： H01M10/04 ,  H01M10/052 ,  H01M10/0587 ,  H01M50/528 ,  H01M50/531

CPC分类号： H01M50/531 ,  H01M10/0422 ,  H01M10/0431 ,  H01M10/0587 ,  H01M10/052 ,  H01M50/528 ,  H01M50/538 ,  H01M50/536

摘要： Embodiments relate to a cylindrical secondary battery (100) including a can (110) having a cylindrical shape and an open one end portion, an electrode assembly (120) which is wound in a cylindrical shape by stacking a first electrode plate (121) including a first electrode uncoated portion (121a), a separator (123), and a second electrode plate (122) including a second electrode uncoated portion (122a) disposed in a direction opposite to the first electrode uncoated portion (121a) and accommodated in the can (110), and a cap assembly (140) to close the open one end portion of the can (110) in a state in which the electrode assembly (120) is accommodated in the can (110), wherein the first electrode uncoated portion (121a) includes a first substrate tab (121c) which is partially cut and folded to protrude outward from the first electrode uncoated portion (121a), and the second electrode uncoated portion (122a) includes a second substrate tab (122c) which is partially cut and folded to protrude outward from the second electrode uncoated portion (122a).