US 11,056,710 B2
Electrode assembly for flexible rechargeable battery and flexible rechargeable battery including the same
Sol Choi, Yongin-si (KR); Hyeri Eom, Yongin-si (KR); Seungjae Lee, Yongin-si (KR); and Da-Un Han, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Dec. 6, 2018, as Appl. No. 16/212,322.
Claims priority of application No. 10-2017-0166909 (KR), filed on Dec. 6, 2017; and application No. 10-2018-0109692 (KR), filed on Sep. 13, 2018.
Prior Publication US 2019/0173119 A1, Jun. 6, 2019
Int. Cl. H01M 10/02 (2006.01); H01M 2/02 (2006.01); H01M 2/16 (2006.01); H01M 2/26 (2006.01); H01M 2/22 (2006.01); H01M 2/06 (2006.01); H01M 2/30 (2006.01); H01M 2/08 (2006.01); H01M 4/02 (2006.01)
CPC H01M 10/02 (2013.01) [H01M 2/0207 (2013.01); H01M 2/0275 (2013.01); H01M 2/06 (2013.01); H01M 2/08 (2013.01); H01M 2/1673 (2013.01); H01M 2/22 (2013.01); H01M 2/26 (2013.01); H01M 2/30 (2013.01); H01M 2004/021 (2013.01)] 16 Claims
 
1. An electrode assembly for a rechargeable battery, the electrode assembly comprising:
a first electrode comprising a first coating part and a first uncoated region at at least one side of the first coating part, wherein a portion of the first uncoated region having a width less than that of other portions of the first electrode defines a first electrode tab;
a second electrode comprising a second coating part and a second uncoated region at at least one side of the second coating part, wherein a portion of the second uncoated region having a width less than that of other portions of the second electrode defines a second electrode tab;
a separator between the first electrode and the second electrode; and
at least one of a first stress buffering part on at least a partial region of the first electrode tab and a second stress buffering part on at least a partial region of the second electrode tab,
wherein the at least one of the first stress buffering part and the second stress buffering part is configured as a film comprising an ethylene propylene copolymer, a hydrogenated hydrocarbon polymer, and polyethylene.