US 12,095,042 B2
Electrode assembly, battery, and battery pack and vehicle including the same
Hae-Jin Lim, Daejeon (KR); Jin-Hak Kong, Daejeon (KR); Soon-O Lee, Daejeon (KR); Kyu-Hyun Choi, Daejeon (KR); Do-Gyun Kim, Daejeon (KR); Su-Ji Choi, Daejeon (KR); Kwang-Su Hwangbo, Daejeon (KR); Geon-Woo Min, Daejeon (KR); Min-Ki Jo, Daejeon (KR); Jae-Won Lim, Daejeon (KR); Hak-Kyun Kim, Daejeon (KR); Je-Jun Lee, Daejeon (KR); Ji-Min Jung, Daejeon (KR); Jae-Woong Kim, Daejeon (KR); Jong-Sik Park, Daejeon (KR); Yu-Sung Choe, Daejeon (KR); Byoung-Gu Lee, Daejeon (KR); Duk-Hyun Ryu, Daejeon (KR); Kwan-Hee Lee, Daejeon (KR); Jae-Eun Lee, Daejeon (KR); Bo-Hyun Kang, Daejeon (KR); and Pil-Kyu Park, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Dec. 21, 2022, as Appl. No. 18/086,410.
Application 18/086,410 is a continuation of application No. 17/592,608, filed on Feb. 4, 2022.
Claims priority of application No. 10-2021-0022881 (KR), filed on Feb. 19, 2021; application No. 10-2021-0022891 (KR), filed on Feb. 19, 2021; application No. 10-2021-0022894 (KR), filed on Feb. 19, 2021; application No. 10-2021-0022897 (KR), filed on Feb. 19, 2021; application No. 10-2021-0024424 (KR), filed on Feb. 23, 2021; application No. 10-2021-0030291 (KR), filed on Mar. 8, 2021; application No. 10-2021-0030300 (KR), filed on Mar. 8, 2021; application No. 10-2021-0046798 (KR), filed on Apr. 9, 2021; application No. 10-2021-0058183 (KR), filed on May 4, 2021; application No. 10-2021-0077046 (KR), filed on Jun. 14, 2021; application No. 10-2021-0084326 (KR), filed on Jun. 28, 2021; application No. 10-2021-0131205 (KR), filed on Oct. 1, 2021; application No. 10-2021-0131207 (KR), filed on Oct. 1, 2021; application No. 10-2021-0131208 (KR), filed on Oct. 1, 2021; application No. 10-2021-0131215 (KR), filed on Oct. 1, 2021; application No. 10-2021-0131225 (KR), filed on Oct. 1, 2021; application No. 10-2021-0137001 (KR), filed on Oct. 14, 2021; application No. 10-2021-0137856 (KR), filed on Oct. 15, 2021; application No. 10-2021-0142196 (KR), filed on Oct. 22, 2021; application No. 10-2021-0153472 (KR), filed on Nov. 9, 2021; application No. 10-2021-0160823 (KR), filed on Nov. 19, 2021; application No. 10-2021-0163809 (KR), filed on Nov. 24, 2021; application No. 10-2021-0165866 (KR), filed on Nov. 26, 2021; application No. 10-2021-0172446 (KR), filed on Dec. 3, 2021; application No. 10-2021-0177091 (KR), filed on Dec. 10, 2021; application No. 10-2021-0194572 (KR), filed on Dec. 31, 2021; application No. 10-2021-0194593 (KR), filed on Dec. 31, 2021; application No. 10-2021-0194610 (KR), filed on Dec. 31, 2021; application No. 10-2021-0194611 (KR), filed on Dec. 31, 2021; application No. 10-2021-0194612 (KR), filed on Dec. 31, 2021; and application No. 10-2022-0001802 (KR), filed on Jan. 5, 2022.
Prior Publication US 2023/0133740 A1, May 4, 2023
Int. Cl. H01M 50/107 (2021.01); H01M 4/64 (2006.01); H01M 4/70 (2006.01); H01M 10/0587 (2010.01); H01M 50/152 (2021.01); H01M 50/179 (2021.01); H01M 50/183 (2021.01); H01M 50/213 (2021.01); H01M 50/242 (2021.01); H01M 50/507 (2021.01); H01M 50/509 (2021.01); H01M 50/531 (2021.01); H01M 50/533 (2021.01); H01M 50/536 (2021.01); H01M 50/559 (2021.01); H01M 50/567 (2021.01)
CPC H01M 10/0587 (2013.01) [H01M 4/64 (2013.01); H01M 4/70 (2013.01); H01M 50/107 (2021.01); H01M 50/152 (2021.01); H01M 50/179 (2021.01); H01M 50/183 (2021.01); H01M 50/213 (2021.01); H01M 50/242 (2021.01); H01M 50/507 (2021.01); H01M 50/509 (2021.01); H01M 50/531 (2021.01); H01M 50/533 (2021.01); H01M 50/559 (2021.01); H01M 50/567 (2021.01); H01M 2220/20 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An electrode assembly, comprising:
a first electrode;
a second electrode;
a separator between the first electrode and the second electrode, the first electrode, the second electrode, and the separator wound about an axis defining a core and an outer circumference of the electrode assembly, the core being a cavity in the electrode assembly; and
a current collector electrically connected to the first electrode;
wherein the first electrode includes a first portion coated with an active material and a second portion at a first side and adjacent the first portion, the second portion being exposed beyond the separator along a first axial direction of the electrode assembly,
wherein a part of the second portion is bent in a radial direction of the electrode assembly forming a first surface region including stacked layers of the second portion,
wherein, in a partial region of the first surface region, a number of the stacked layers of the second portion is 10 or more in the first axial direction,
wherein the current collector is welded to the first surface region,
wherein at least a portion of a welding region of the current collector overlaps with the partial region of the first surface region,
wherein the partial region of the first surface region is spaced apart from the core of the electrode assembly in the radial direction, and
wherein the second portion includes a plurality of segments, each of the plurality of segments being independently bendable, and adjacent segments in a circumferential direction of the electrode assembly overlap each other.