Energy storage for a land vehicle

Energy storage, which is arranged in a housing (10) • having an electrical machine (12) having a rotor (14) and a stator (16), wherein • the stator (16) • from the rotor (14) by an air gap (18) is isolated and • having at least one stator coil (20), and wherein • the rotor (14) • is surrounded by the stator (16), • is a flywheel mass (22) and associated • is made of thin metal plate disks (30) • have a circular annular disc-shaped form with an outer edge (32) and an inner edge (34), and the • in the stationary state • at its outer edge (32) of a first tension and • at its inner edge (34) of a first shear stress • are exposed and • energy storage, in which the stator (16) relative to the ...