US 12,463,296 B2
Battery electrode, battery, and battery electrode manufacturing method
Tatsuya Tsushima, Hyogo (JP); Katsuya Shiozaki, Hyogo (JP); Ryosuke Iwata, Hyogo (JP); and Yuma Kamiyama, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/261,991
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Jun. 26, 2019, PCT No. PCT/JP2019/025282
§ 371(c)(1), (2) Date Jan. 21, 2021,
PCT Pub. No. WO2020/026649, PCT Pub. Date Feb. 6, 2020.
Claims priority of application No. 2018-142478 (JP), filed on Jul. 30, 2018.
Prior Publication US 2021/0351484 A1, Nov. 11, 2021
Int. Cl. H01M 50/533 (2021.01); H01M 4/04 (2006.01); H01M 4/66 (2006.01); H01M 4/70 (2006.01); H01M 50/531 (2021.01)
CPC H01M 50/533 (2021.01) [H01M 4/043 (2013.01); H01M 4/66 (2013.01); H01M 50/531 (2021.01); H01M 4/70 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A battery electrode comprising an electrode current collector, and an active material layer provided on a surface of the electrode current collector, wherein:
the electrode current collector has a based portion in which the electrode current collector surface is covered by the active material layer and a tab portion projecting from the based portion;
a pair of cutouts are formed in the electrode current collector, wherein each of the pair of cutouts is formed in the based portion from a corresponding one of opposite end portions of a root of the tab portion in a width direction of the tab portion, or in a corresponding one of opposed parts of the based portion respectively adjacent to the corresponding one of the opposite end portions of the root of the tab portion in the width direction;
an edge of said each of the pair of cutouts consists of a single curve and a single straight line,
the edge of said each of the pair of cutouts has a first end thereof on the tab portion side and a second end thereof on the based portion side, wherein the single curve is formed from the first end and the single straight line is formed from the second end; and
a portion of the electrode current collector surface interposed between the pair of cutouts in the width direction is covered by the active material layer formed thereon.