DEVICE AND METHOD FOR ENERGY RECOVERY FOR AN ELECTRICALLY DRIVEN MOTOR VEHICLE

The invention relates to a device for energy recovery for an electrically driven motor vehicle. The device comprises an electric drive unit () for driving the motor vehicle and a permanent brake device () which is designed as a hydrodynamic retarder and is or can be drivingly connected to the electric drive unit (). A waste heat recovery device () has an expansion machine () which is or can be connected to the permanent brake device () for energy recovery of a waste heat resulting from the braking of the permanent brake device (). The invention also relates to a method for energy recovery in an electrically driven motor vehicle.