US 12,068,504 B2
Battery systems, methods, and vehicles with interconnect board assemblies having multilayer current collectors
Mitchell Stojanovski, Birmingham, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jun. 6, 2022, as Appl. No. 17/833,226.
Prior Publication US 2023/0395947 A1, Dec. 7, 2023
Int. Cl. H01M 50/507 (2021.01); H01M 10/04 (2006.01); H01M 50/514 (2021.01); H01M 50/533 (2021.01); H01M 50/536 (2021.01); H01M 50/54 (2021.01)
CPC H01M 50/507 (2021.01) [H01M 10/0413 (2013.01); H01M 50/514 (2021.01); H01M 50/533 (2021.01); H01M 50/536 (2021.01); H01M 50/54 (2021.01); H01M 2220/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An interconnect board (ICB) assembly for a battery system with multiple battery cells, the ICB assembly comprising:
an ICB board frame;
a busbar assembly mounted to the ICB board frame and including an electrically conductive busbar track configured to electrically interconnect the battery cells, the busbar track including a first busbar track parallel to and spaced from a second busbar track, the first busbar track configured to contact a first set of the battery cells and the second busbar track configured to contact a second set of the battery cells, the first busbar track including a first set of mutually parallel busbar rails distinct and spaced from one another, the second busbar track including a second set of mutually parallel busbar rails distinct and spaced from one another, and the first set of mutually parallel busbar rails being staggered with the second set of mutually parallel busbar rails; and
a first end terminal assembly mounted to the ICB board frame adjacent a first end of the busbar assembly, the first end terminal assembly extending transversely across and electrically connecting one end of the first busbar track to one end of the second busbar track, the first end terminal assembly including:
a first current collector layer attached to the ICB board frame and configured to electrically connect to the battery cells and the busbar track;
a first dielectric layer adjacent the first current collector layer; and
a second current collector layer attached to the first dielectric layer, the second current collector layer electrically connected to the first current collector layer.