US 11,811,097 B2
Battery tab design, method of manufacture thereof and batteries comprising the same
Christopher Schlaupitz, White Lake, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Nov. 3, 2020, as Appl. No. 17/087,929.
Prior Publication US 2022/0140451 A1, May 5, 2022
Int. Cl. H01M 50/533 (2021.01); H01M 10/0525 (2010.01); H01M 50/536 (2021.01); H01M 50/193 (2021.01)
CPC H01M 50/533 (2021.01) [H01M 10/0525 (2013.01); H01M 50/536 (2021.01)] 16 Claims
OG exemplary drawing
 
1. A battery comprising a tab and a pouch wherein the tab comprises:
a metal piece having:
a cross-sectional area geometry that when viewed in a lateral direction is tapered at the ends; and
a cross-sectional area geometry having a variable thickness when viewed in a longitudinal direction; where the longitudinal direction is perpendicular to the lateral direction; and wherein when viewed in the longitudinal direction, a tab thickness t1 at a location where the tab is in contact with an electrode is less than a tab thickness t2 at a location where the tab contacts the pouch
wherein the metal piece further contains an indentation outside the pouch such that a tab thickness t3 at the indentation is less than the thickness t2.