US 12,266,817 B2
Battery pack housing
Nick Milanovic, Columbus, IN (US); Deepak Kovaichelvan, Columbus, IN (US); and Chao Ma, Columbus, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Feb. 2, 2022, as Appl. No. 17/591,452.
Claims priority of application No. 2101499 (GB), filed on Feb. 3, 2021.
Prior Publication US 2022/0247028 A1, Aug. 4, 2022
Int. Cl. H01M 50/271 (2021.01); H01M 50/204 (2021.01); H01M 50/249 (2021.01)
CPC H01M 50/271 (2021.01) [H01M 50/204 (2021.01); H01M 50/249 (2021.01); H01M 2220/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A battery pack for an electric or hybrid electric vehicle, the battery pack comprising a plurality of battery cells and a battery pack housing, the battery pack housing comprising:
a surround frame, the surround frame comprising a plurality of walls arranged to surround the battery cells; and
a top panel which is attached to the walls of the surround frame to form the top of the battery pack housing,
wherein:
the surround frame comprises a flange and the top panel is attached to the flange;
the flange does not include bolt holes for attaching the top panel to the surround frame;
the top panel is attached to the flange using an adhesive;
the adhesive provides a continuous seal between the top panel and the surround frame;
the top panel is removable from the surround frame to allow access to internal components of the battery pack;
the top panel includes a tab which is not adhered to the surround frame;
wherein the tab comprises a tab hole; and
the tab is configured to be attached to a torsion bar by passing a bolt through the tab hole and into a threaded hole in the torsion bar such that when the torsion bar rotates the top panel is rolled around the torsion bar.