US 12,224,459 B2
Button cell
Heejung Ko, Yongin-si (KR); Kijung Kim, Yongin-si (KR); Yongjin Park, Yongin-si (KR); Byongchul Woo, Yongin-si (KR); and Jong-Ha Lee, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Mar. 16, 2021, as Appl. No. 17/202,881.
Claims priority of application No. 10-2020-0073855 (KR), filed on Jun. 17, 2020.
Prior Publication US 2021/0399392 A1, Dec. 23, 2021
Int. Cl. H01M 50/547 (2021.01); H01M 50/109 (2021.01); H01M 50/153 (2021.01); H01M 50/181 (2021.01); H01M 50/533 (2021.01); H01M 50/559 (2021.01); H01M 50/566 (2021.01)
CPC H01M 50/547 (2021.01) [H01M 50/109 (2021.01); H01M 50/153 (2021.01); H01M 50/181 (2021.01); H01M 50/533 (2021.01); H01M 50/559 (2021.01); H01M 50/566 (2021.01)] 13 Claims
OG exemplary drawing
 
1. A button cell comprising:
a case receiving an electrode assembly and comprising an opening;
a cap assembly comprising a cap plate coupled to and electrically connected to the case and covering the opening, and a terminal plate coupled to the cap plate; and
a housing covering the cap plate and coupled to the case,
wherein the terminal plate protrudes through a terminal hole of the cap plate such that an outer surface of the terminal plate protrudes more than an outer surface of the housing to have a height difference, and
the cap plate and the terminal plate are thermally fused with a thermal-fusion member therebetween and are electrically insulated from each other, the thermal-fusion member being spaced outside the terminal hole of the cap plate so as not to overlap the terminal hole.