US 12,191,533 B2
Secondary battery
Byoung Min Chun, Yongin-si (KR); and Gun Gue Park, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Appl. No. 17/628,874
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
PCT Filed Jun. 29, 2020, PCT No. PCT/KR2020/008485
§ 371(c)(1), (2) Date Jan. 20, 2022,
PCT Pub. No. WO2021/020743, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 10-2019-0090710 (KR), filed on Jul. 26, 2019.
Prior Publication US 2022/0255204 A1, Aug. 11, 2022
Int. Cl. H01M 50/586 (2021.01); H01M 10/04 (2006.01); H01M 50/147 (2021.01); H01M 50/179 (2021.01); H01M 50/183 (2021.01); H01M 50/593 (2021.01)
CPC H01M 50/586 (2021.01) [H01M 10/0422 (2013.01); H01M 10/0431 (2013.01); H01M 50/147 (2021.01); H01M 50/179 (2021.01); H01M 50/183 (2021.01); H01M 50/593 (2021.01)] 8 Claims
OG exemplary drawing
 
1. A secondary battery comprising:
a cylindrical can having an opening;
an electrode assembly which is accommodated in the opening of the cylindrical can and wound in a cylinder shape;
a cap assembly which is electrically connected to the electrode assembly and seals the cylindrical can;
a current collecting plate configured to electrically connect the electrode assembly to the cylindrical can; and
an insulating plate interposed between the current collecting plate and the cylindrical can,
wherein the current collecting plate comprises a current collecting flat portion that is electrically connected to the electrode assembly and a protrusion protruding from a center of the current collecting flat portion toward the cylindrical can, wherein the protrusion includes at least one opening, and
the insulating plate comprises an insulating flat portion interposed between the current collecting flat portion and the cylindrical can and a through-hole having an inner diameter surface to which the opening of the protrusion is coupled.