US 11,705,606 B2
Tab and battery including the tab
Qinglei Liu, Changzhou (CN)
Assigned to CALB Technology Co., Ltd., Jiangsu (CN)
Filed by CALB Technology Co., Ltd., Jiangsu (CN)
Filed on Jan. 19, 2021, as Appl. No. 17/151,682.
Claims priority of application No. 202010876891.2 (CN), filed on Aug. 27, 2020.
Prior Publication US 2022/0069425 A1, Mar. 3, 2022
Int. Cl. H01M 50/534 (2021.01); H01M 10/04 (2006.01); C25D 3/38 (2006.01); C25D 1/04 (2006.01); H01M 10/0525 (2010.01); H01M 50/533 (2021.01); H01M 4/66 (2006.01); H01M 4/70 (2006.01)
CPC H01M 50/534 (2021.01) [H01M 10/04 (2013.01); C25D 1/04 (2013.01); C25D 3/38 (2013.01); H01M 4/661 (2013.01); H01M 4/70 (2013.01); H01M 10/0525 (2013.01); H01M 50/533 (2021.01); Y02E 60/10 (2013.01); Y02P 70/50 (2015.11)] 11 Claims
OG exemplary drawing
 
1. A tab, which is a copper foil material, wherein a surface of the copper foil material having a large compressive stress is an S surface, a surface having a small compressive stress is an M surface, and only the M surface is provided with an indentation or a reinforcing rib, and
wherein a thickness of the copper foil material is 4 to 8 μm, and a depth of the indentation or a height of the reinforcing rib is between 60 and 120 μm.