US Patent 11820220 Vehicular battery unit and vehicular underbody including the same

A vehicular battery unit includes a lower case, including a pair of battery-receiving sections disposed at two lateral sides of a vehicle, and a connecting section, which is disposed between the pair of battery-receiving sections and is convex upwards, battery modules mounted in the battery-receiving sections, a lower cross member, which is fixed to a lower surface of the lower case and extends beyond the lower surface of the lower case in a lateral direction of the lower case, the lower cross member being bent upwards beyond the lower surface of the lower case and bent in the lateral direction of the lower case, and an upper cross member, which is fixed to a lateral side surface of the lower case, is bent in the lateral direction of the lower case, and is coupled to the lower cross member.