BATTERY PACK CASING HAVING CRUSH RESISTANCE AND THERMAL INSULATION FOR ELECTRIFIED VEHICLE

A battery pack assembly configured to be coupled to a battery housing for an electrified vehicle includes a battery case and an air column assembly. The battery case has a bottom surface, a forward wall, a rearward wall, a first sidewall and a second sidewall. The air column assembly is supported within the battery case and includes a first, second and third plurality of air columns. The first plurality of air columns are positioned along the bottom surface of the battery case. The second plurality of air columns are positioned outboard of the first plurality of air columns. The third plurality of air columns are positioned outboard of the second plurality of air columns and engage the forward wall, rearward wall, first sidewall and second sidewall of the battery case in an installed position. The battery case assembly mitigates impact damage to the battery housing in the installed position.