US 12,438,240 B2
Cylindrical battery and battery pack including the same
Ju Nam Son, Daejeon (KR); and Jung Jin Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/633,762
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Sep. 17, 2020, PCT No. PCT/KR2020/012545
§ 371(c)(1), (2) Date Feb. 8, 2022,
PCT Pub. No. WO2021/066360, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 10-2019-0122562 (KR), filed on Oct. 2, 2019; and application No. 10-2020-0118906 (KR), filed on Sep. 16, 2020.
Prior Publication US 2022/0278430 A1, Sep. 1, 2022
Int. Cl. H01M 50/533 (2021.01); H01M 50/107 (2021.01); H01M 50/152 (2021.01); H01M 50/528 (2021.01)
CPC H01M 50/533 (2021.01) [H01M 50/107 (2021.01); H01M 50/152 (2021.01); H01M 50/528 (2021.01)] 14 Claims
OG exemplary drawing
 
1. A cylindrical battery comprising:
a battery case;
an electrode assembly located in the battery case;
a top cap located at an upper part of the electrode assembly; and
a positive electrode tab electrically connecting the top cap and the electrode assembly, the positive electrode tab having at least one folded portion and an extension portion protruding from a first folded portion of the at least one folded portion, the extension portion being cantilevered from the first folded portion,
wherein the positive electrode tab includes a first connection portion and a second connection portion that are interconnected at the first folded portion,
wherein the extension portion is a single piece body having a thickness that is greater than a thickness of each of the first connection portion and the second connection portion.