US 12,021,269 B2
Electrode assembly, battery cell, battery, electrical apparatus, and manufacturing method and device
Wenwei Chen, Ningde (CN); Xiaona Wang, Ningde (CN); Zige Zhang, Ningde (CN); Qingrui Xue, Ningde (CN); and Chengdu Liang, Ningde (CN)
Assigned to Contemporary Amperex Technology Co., Limited, Ningde (CN)
Filed by Contemporary Amperex Technology Co., Limited, Ningde (CN)
Filed on Jul. 27, 2022, as Appl. No. 17/815,216.
Application 17/815,216 is a continuation of application No. PCT/CN2020/122245, filed on Oct. 20, 2020.
Prior Publication US 2022/0367985 A1, Nov. 17, 2022
Int. Cl. H01M 50/533 (2021.01); H01M 4/38 (2006.01); H01M 50/169 (2021.01); H01M 50/209 (2021.01); H01M 50/54 (2021.01); H01M 50/566 (2021.01)
CPC H01M 50/533 (2021.01) [H01M 4/386 (2013.01); H01M 50/169 (2021.01); H01M 50/209 (2021.01); H01M 50/54 (2021.01); H01M 50/566 (2021.01); H01M 2220/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An electrode assembly for a battery cell, the electrode assembly comprising:
an electrode plate extending horizontally along a length direction of the electrode assembly and extending vertically along a thickness direction of the electrode assembly, the electrode plate comprising a main portion and at least one protruding portion connected to the main portion, wherein the main portion comprises a metal substrate and an active material layer coated on a surface of the metal substrate, the protruding portion protrudes from the metal substrate along the length direction of the electrode assembly, wherein
along the thickness direction of the electrode assembly, a size of at least a part of the protruding portion is greater than a size of the metal substrate,
wherein the protruding portion comprises a body portion and a conductive piece, the body portion and the conductive piece being stacked in the thickness direction,
wherein the conductive piece comprises a first connecting portion and a second connecting portion, the first connecting portion is configured to connect the body portion, the second connecting portion protrudes from an end that is of the body portion and that is away from the active material layer, and the second connecting portion is configured to implement electrical connection to an external part,
wherein the body portion further comprises a partitioning groove and a plurality of fuse portions arranged along a width direction of the electrode assembly, the fuse portions are connected to the first connecting portion of the conductive piece and partitioned by the partitioning groove.