Energy Storage Underbody for a Motor Car Body-in-White

An energy storage underbody is provided for a motor car body-in-white in which a vehicle floor is laterally delimited by side sills and is reinforced by side members and/or cross members, and in which an energy storage device is disposed on the underside of the vehicle floor. In order to obtain an energy storage device of particularly simple construction and a particularly economical, stiffened underbody, the energy storage underbody has at least one housing of the energy storage device, the housing being non-loadbearing in terms of the body-in-white, and has at least one additional side member or cross member disposed on the topside of the vehicle floor to reinforce the underbody.