US 11,862,816 B2
Battery pack with overmolded busbars providing parallel cooling paths
Faruk A Sohag, Canton, MI (US); Ethan T. Quy, Royal Oak, MI (US); Robert J. Schoenherr, Oxford, MI (US); and Nicholas R. Bratton, Royal Oak, 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. 29, 2020, as Appl. No. 16/915,843.
Prior Publication US 2021/0408514 A1, Dec. 30, 2021
Int. Cl. H01M 50/502 (2021.01); H01M 10/6554 (2014.01); H01M 10/613 (2014.01); H01M 50/20 (2021.01); H01M 10/48 (2006.01); H01M 10/625 (2014.01); H01M 10/647 (2014.01)
CPC H01M 50/502 (2021.01) [H01M 10/482 (2013.01); H01M 10/613 (2015.04); H01M 10/625 (2015.04); H01M 10/647 (2015.04); H01M 10/6554 (2015.04); H01M 50/20 (2021.01); H01M 2220/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A battery pack comprising:
a heat sink;
a bracket joined to the heat sink, wherein the bracket includes a pair of side walls extending outwardly away from the heat sink such that the bracket defines a bracket pocket between the side walls;
a housing;
a plurality of battery cells arranged within the housing; and
an interconnect board assembly (ICBA) having:
a parallel set of busbars, wherein each busbar of the parallel set of busbars is conductively joined to one or more of the battery cells via corresponding battery cell tabs of the battery cells; and
an interconnect board (ICB) constructed from a dielectric material, wherein the dielectric material is overmolded onto a distal end of each respective one of the busbars to form a plurality of overmolded ends, and wherein the overmolded ends extend into the bracket pocket between the side walls such that the overmolded ends are concealed by the side walls and form a cooling path into the heat sink from each of the busbars.