US 12,476,258 B2
Battery cell with supplemental current collectors
Meng Wang, Pleasanton, CA (US); Debaditya Biswas, San Jose, CA (US); Daniel Matthew Davies, San Francisco, CA (US); and Kenton Robert Harris, Bloomington, IL (US)
Assigned to Rivian IP Holdings, LLC, Irvine, CA (US)
Filed by Rivian IP Holdings, LLC, Irvine, CA (US)
Filed on Jan. 11, 2024, as Appl. No. 18/410,797.
Prior Publication US 2025/0233159 A1, Jul. 17, 2025
Int. Cl. H01M 50/538 (2021.01); H01M 4/66 (2006.01); H01M 50/107 (2021.01); H01M 50/536 (2021.01)
CPC H01M 4/667 (2013.01) [H01M 50/107 (2021.01); H01M 50/536 (2021.01); H01M 50/538 (2021.01); H01M 2220/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A battery cell, comprising:
an electrode roll having a first end, an opposing second end, an axis extending from the first end to the opposing second end, and at least one rolled electrode;
a current collector arranged perpendicularly to the axis and mounted to the first end;
a plurality of tabs extending from the at least one rolled electrode to the current collector; and
an insulating layer arranged perpendicularly to the axis and having a first surface in direct contact with the first end of the electrode roll and a second surface in direct contact with the current collector, wherein the current collector comprises a contiguous structure that includes:
a planar portion arranged perpendicularly to the axis, and
a first extension that extends away from the planar portion into contact with a cap of the battery cell,
wherein the plurality of tabs extend from the at least one rolled electrode to the current collector without overlapping with each other.