US 12,308,439 B2
Battery
Chengdu Liang, Ningde (CN); Huafeng Huang, Ningde (CN); and Qisen Huang, Ningde (CN)
Assigned to Contemporary Amperex Technology (HONG KONG) Limited, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Jul. 9, 2020, as Appl. No. 16/924,842.
Application 16/924,842 is a continuation of application No. 16/514,428, filed on Jul. 17, 2019, granted, now 10,749,184.
Claims priority of application No. 201910345708.3 (CN), filed on Apr. 26, 2019.
Prior Publication US 2020/0343558 A1, Oct. 29, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/66 (2006.01)
CPC H01M 4/667 (2013.01) [H01M 4/661 (2013.01); H01M 4/664 (2013.01); H01M 4/668 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A battery, comprising:
a positive electrode plate comprising a positive current collector and a positive active material layer;
a negative electrode plate comprising a negative current collector and a negative active material layer, and
an electrolyte,
wherein the positive current collector comprises an insulation layer, and at least one conductive layer, the insulation layer is used to support the at least one conductive layer, each of the at least one conductive layer is used to support the positive active material layer and is located above at least one surface of the insulation layer,
wherein at least one protective layer is arranged on at least one surface of each of the at least one conductive layer, the at least one protective layer comprises a lower protective layer arranged on a surface of one of the at least one conductive layer facing the insulation layer,
wherein the negative current collector is a copper foil current collector, and
wherein the copper foil current collector has an elongation at break greater than or equal to 1%.