US 11,843,119 B2
Electrode assembly, battery cell, battery, and method and apparatus for manufacturing electrode assembly
Honggang Yu, Ningde (CN); Songjun Shi, Ningde (CN); Haizu Jin, Ningde (CN); Shutao Song, Ningde (CN); Bing Chen, Ningde (CN); and Xinxin Du, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Nov. 15, 2022, as Appl. No. 18/055,623.
Application 18/055,623 is a continuation of application No. PCT/CN2020/110628, filed on Aug. 21, 2020.
Prior Publication US 2023/0083594 A1, Mar. 16, 2023
Int. Cl. H01M 4/62 (2006.01); H01M 10/0587 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/628 (2013.01) [H01M 10/0587 (2013.01); H01M 2004/021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrode assembly comprising:
a positive electrode plate and a negative electrode plate wound or stacked to form a bend region; and
a barrier layer provided at the bend region, at least part of the barrier layer being located between the positive electrode plate and the negative electrode plate that are adjacent to each other, and being configured to prevent at least part of ions deintercalated from the positive electrode plate from being intercalated into the negative electrode plate in the bend region;
wherein the barrier layer comprises two ends in a direction perpendicular to a bending direction, and one or two of the two ends of the barrier layer extend beyond a positive electrode active material layer of the positive electrode plate.