Abstract: A drive or traction battery for a motor vehicle has a battery housing with a top wall and a bottom wall. The bottom wall forms, at least in part, an underbody of the motor vehicle. In the battery housing there is a battery cell layer having a plurality of battery cells, arranged vertically and next to one another, and a support layer, which can also be referred to as a degassing layer, spacer layer, collision protection layer or deformation layer. In each battery cell, at least one degassing opening is formed in the side facing the support layer, and a degassing space, such as a recess, that can hold a certain volume of gas is arranged opposite each degassing opening in the support layer.

Abstract: A passenger motor vehicle has a body with a passenger compartment, and a drive energy accumulator, in particular a drive energy battery. The drive energy accumulator is arranged or mounted on the body from below and at least part of it forms a floor of the passenger compartment. The motor vehicle also has a temperature-control system, and the part of the drive energy store forming the floor of the passenger compartment is designed as a heat exchanger for controlling the temperature of the passenger compartment by way of the temperature-control system.