US 11,916,256 B2
Battery assembly
Joseph J. Viavattine, Vadnais Heights, MN (US); and Erik J. Hovland, Minnetonka, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Feb. 10, 2021, as Appl. No. 17/172,903.
Prior Publication US 2022/0255198 A1, Aug. 11, 2022
Int. Cl. H01M 50/538 (2021.01); H01M 50/533 (2021.01); H01M 50/184 (2021.01); H01M 50/174 (2021.01); H01M 50/536 (2021.01)
CPC H01M 50/538 (2021.01) [H01M 50/174 (2021.01); H01M 50/184 (2021.01); H01M 50/533 (2021.01); H01M 50/536 (2021.01)] 21 Claims
OG exemplary drawing
 
1. An assembly comprising:
a first electrode comprising a first conductive tab, a first current collector, and a first active material on the first current collector;
a second electrode comprising a second conductive tab, a second current collector, a third current collector, a second active material on the second current collector and the third current collector, and at least one connector connecting the second current collector to the third current collect,
wherein the second current collector and the third current collector are folded over each other about the at least one connector,
wherein the second conductive tab is coupled to the second current collector, and
wherein the third current collector is electrically coupled to second conductive tab via the at least one connector and the second current collector; and
a foil package being sealed over the first conductive tab and the second conductive tab to partially enclose the first electrode and second electrode,
wherein the second current collector has a first major surface and a second major surface generally opposing the first major surface, wherein the second current collector defines a first thickness from the first major surface and the second major surface,
wherein the third current collector has a third major surface and a fourth major surface generally opposing the third major surface, wherein the third current collector defines a second thickness from the third major surface and the fourth major surface,
wherein the at least one connector extends between a first side of the second current collector and a second side of the third current collector, wherein the first side of the second current collector defines a first width extending in a direction substantially orthogonal to the first thickness of the second current collector, wherein the second side of the third current collector defines a second width extending in a direction substantially orthogonal to the second thickness of the third current collector,
wherein the at least one connector defines a third width adjacent to first side extending in the direction substantially orthogonal to the first thickness of the second current collector, wherein the at least one connector defines a fourth width adjacent to second side extending in the direction substantially orthogonal to the second thickness of the third current collector,
wherein the third width of the at least one connector is less than the first width of the first side such that the at least one connector does not span the entire first width of the first side of the second current collector, and wherein the fourth width of the at least one connector is less than the second width of the second side such that the at least one connector does not span the entire second width of the second side of the third current collector.