US 12,272,836 B2
Battery pack with temperature-controlled vent gas flow
Anil Yadav, Troy, 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. 22, 2022, as Appl. No. 17/846,152.
Prior Publication US 2023/0420791 A1, Dec. 28, 2023
Int. Cl. H01M 50/333 (2021.01); B60L 50/64 (2019.01); B60L 58/26 (2019.01); H01M 10/0525 (2010.01); B60L 50/60 (2019.01)
CPC H01M 50/333 (2021.01) [B60L 50/64 (2019.02); B60L 58/26 (2019.02); H01M 10/0525 (2013.01); B60L 50/66 (2019.02); B60L 2240/545 (2013.01); H01M 2220/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A battery pack comprising:
one or more battery modules;
a housing enclosing the one or more battery modules therein and defining a plurality of perimeter vents; and
a plurality of vent closure assemblies, each respective one of the vent closure assemblies being connected adjacent a corresponding one of the perimeter vents and comprising:
a translatable member;
a diffuser block connected to an outer surface of the housing, spanning the corresponding perimeter vent, and defining a plurality of orifices; and
at least one sacrificial post configured to melt or incinerate at a calibrated temperature to cause the translatable member to translate relative to the diffuser block and thereby close off the perimeter vents or the plurality of orifices.