US 12,444,814 B2
Apparatus for welding electrode tabs, method for welding electrode tabs, and secondary battery
Ah Ram Park, Daejeon (KR); Yong Tae Lee, Daejeon (KR); Seung Byung Lee, Daejeon (KR); and Seok Je Kim, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/713,926
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Nov. 29, 2022, PCT No. PCT/KR2022/019104
§ 371(c)(1), (2) Date May 28, 2024,
PCT Pub. No. WO2023/096469, PCT Pub. Date Jun. 1, 2023.
Claims priority of application No. 10-2021-0167738 (KR), filed on Nov. 29, 2021; and application No. 10-2022-0163018 (KR), filed on Nov. 29, 2022.
Prior Publication US 2025/0023202 A1, Jan. 16, 2025
Int. Cl. B23K 20/00 (2006.01); B23K 20/10 (2006.01); H01M 50/536 (2021.01)
CPC H01M 50/536 (2021.01) [B23K 20/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An apparatus for welding electrode tabs protruding from an electrode assembly to each other, the apparatus comprising:
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 so 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.