US 12,469,908 B2
Button-type secondary battery
Jae Won Lim, Daejeon (KR); Yong Gon Lee, Daejeon (KR); Je Jun Lee, Daejeon (KR); Geon Woo Min, Daejeon (KR); Min Su Cho, Daejeon (KR); Min Gyu Kim, Daejeon (KR); and Hak Kyun Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/791,783
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Sep. 16, 2021, PCT No. PCT/KR2021/012724
§ 371(c)(1), (2) Date Jul. 8, 2022,
PCT Pub. No. WO2022/065809, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 10-2020-0123362 (KR), filed on Sep. 23, 2020.
Prior Publication US 2023/0033605 A1, Feb. 2, 2023
Int. Cl. H01M 50/153 (2021.01); H01M 50/109 (2021.01); H01M 50/184 (2021.01); H01M 50/538 (2021.01)
CPC H01M 50/153 (2021.01) [H01M 50/109 (2021.01); H01M 50/184 (2021.01); H01M 50/538 (2021.01)] 14 Claims
OG exemplary drawing
 
1. A button-type secondary battery, comprising:
an electrode assembly;
a lower can having an accommodation space in which the electrode assembly is accommodated;
an upper can coupled to the lower can to cover the accommodation space;
a gasket configured to seal a gap between the lower can and the upper can and to electrically insulate the lower can from the upper can while being inserted into a coupled portion of the lower can and the upper can;
a first electrode tab including a first coupling part coupled to a first electrode of the electrode assembly and a second coupling part coupled between the gasket, which is disposed at the coupled portion of the lower can and the upper can, and the upper can; and
a second electrode tab coupled to a second electrode of the electrode assembly,
wherein:
the second coupling part is coupled between the gasket and the upper can by a pressure generated when the lower can and the upper can are coupled to each other; and
at least a portion of the first electrode tab and at least a portion of the second electrode tab overlap each other along a longitudinal direction of the button-type secondary battery.