CPC H01M 50/533 (2021.01) [H01M 10/0525 (2013.01); H01M 50/536 (2021.01)] | 16 Claims |
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.
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