Battery exchange system of an electric car

The battery changing system has a battery block (B), which is arranged in a battery case (2) of the electric vehicle and is moved in horizontal direction in the battery case inwards and outwards from the battery case. The device for fixing the battery block in the battery case or on the changing device (W) is formed by a slip-resistant and friction-enhancing intermediate layer, which is arranged between the battery block base (3) and the battery case of the electric vehicle.