US 12,278,359 B2
Electrode assembly comprising anode sheet and anode having improved stacking characteristics of electrode, and method of manufacturing the same
Tai Joon Seo, Daejeon (KR); Dong Hee Sul, Daejeon (KR); Dong Hun Song, Deajeon (KR); and Woo Yong Lee, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/914,573
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Dec. 18, 2020, PCT No. PCT/KR2020/018686
§ 371(c)(1), (2) Date Sep. 26, 2022,
PCT Pub. No. WO2022/034995, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 10-2020-0102132 (KR), filed on Aug. 14, 2020; and application No. 10-2020-0175841 (KR), filed on Dec. 15, 2020.
Prior Publication US 2023/0223509 A1, Jul. 13, 2023
Int. Cl. H01M 4/04 (2006.01); G01B 7/06 (2006.01); H01M 4/36 (2006.01); H01M 10/0583 (2010.01); H01M 10/0587 (2010.01)
CPC H01M 4/0409 (2013.01) [G01B 7/087 (2013.01); H01M 4/364 (2013.01); H01M 10/0583 (2013.01); H01M 10/0587 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An electrode assembly, comprising:
a cathode in which a cathode tab protrudes from one outer end and a cathode mixture layer comprising a cathode active material is applied on a lower portion of the cathode tab and on a cathode current collector;
an anode in which an anode tab protrudes from one outer end and an anode mixture layer comprising an anode active material is applied on a lower portion of the anode tab and on an anode current collector; and
a separator interposed between the cathode and the anode,
wherein the anode is formed with the anode tab comprising an active material-coated portion and a non-coated portion, and a shoulder portion comprising the active material-coated portion at a predetermined interval,
wherein the shoulder portion is formed at a position facing the cathode tab when stacked with the cathode, and
wherein the shoulder portion has a protruding length extending perpendicularly away from an end of a rectangular portion of the anode, and the cathode active material extends on the cathode tab beyond the end of the rectangular portion of the anode and at least partially overlies the shoulder portion.