公开(公告)号：US20250041960A1

公开(公告)日：2025-02-06

申请号：US18713969

申请日：2022-11-29

Applicant: LG Energy Solution, Ltd.

Inventor： Ah Ram Park ,  Yong Tae Lee ,  Seung Byung Lee ,  Seok Je Kim

IPC: B23K11/06 ,  B23K11/00 ,  B23K101/36 ,  H01M50/536

Abstract: An apparatus and method for welding electrode tabs protruding from an electrode assembly to each other, which may include a guide part configured to gather the electrode tabs; and a welding part configured to weld the electrode tabs gathered by the guide part on a predetermined welding area. The guide part may be configured to press the electrode tabs toward the electrode assembly, while moving toward the electrode assembly, such that a length from the electrode assembly to the welding area increases in at least a portion of the electrode tabs before being welded by the welding part. Accordingly, some aspects of the present invention may prevent the electrode tabs from disconnecting.

公开(公告)号：US20250023202A1

公开(公告)日：2025-01-16

申请号：US18713926

申请日：2022-11-29

Applicant: LG Energy Solution, Ltd.

Inventor： Ah Ram Park ,  Yong Tae Lee ,  Seung Byung Lee ,  Seok Je Kim

IPC: H01M50/536 ,  B23K20/10

Abstract: An apparatus and method for welding electrode tabs protruding from an electrode assembly to each other which may include a guide part configured to gather the electrode tabs on a predetermined gathering area, a welding part configured to weld the electrode tabs gathered by the guide part, and a bending part configured to bend the electrode assembly. The bending part ensures that a length from the electrode assembly to the gathering area increases in at least a portion of the electrode tabs before being welded by the welding part. Accordingly, some aspects of the present invention may prevent the electrode tabs from disconnecting. Moreover, the present invention also relates to a secondary battery and may relate to a secondary battery manufactured by the above-described welding apparatus or method.