US 11,658,329 B2
Secondary battery and electrode plate thereof
Wei Li, Ningde (CN); Zige Zhang, Ningde (CN); Chengdu Liang, Ningde (CN); Qingrui Xue, Ningde (CN); Jing Li, Ningde (CN); and Pengxiang Wang, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Fujian (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Apr. 16, 2021, as Appl. No. 17/233,337.
Application 17/233,337 is a continuation of application No. 16/267,042, filed on Feb. 4, 2019, granted, now 11,024,870.
Claims priority of application No. 201821651128.4 (CN), filed on Oct. 11, 2018.
Prior Publication US 2021/0234188 A1, Jul. 29, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/04 (2006.01); H01M 4/02 (2006.01); H01M 50/538 (2021.01); H01M 50/536 (2021.01); H01M 50/534 (2021.01)
CPC H01M 10/0436 (2013.01) [H01M 4/02 (2013.01); H01M 50/534 (2021.01); H01M 50/536 (2021.01); H01M 50/538 (2021.01); H01M 2004/021 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electrode plate of a secondary battery, comprising:
a current collector, the current collector including an insulating layer and a first conducting layer disposed on at least one surface of the insulating layer;
an active material layer disposed on a main portion of the first conducting layer, wherein the first conducting layer further includes a protruding portion not coated with the active material layer; and
a second conducting layer, the second conducting layer including a first portion disposed on a surface of the protruding portion of the first conducting layer opposite to the insulating layer;
wherein the second conducting layer is made from a non-metallic material, and at least a portion of the non-metallic material is filled into cracks in the first conducting layer.