Device and method for energy recovery for an electrically driven motor vehicle
AssigneeMan Truck & Bus AG
InventorsAlexander Schydlo, Thomas Landsherr
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a device for energy recovery for an electrically driven motor vehicle. The device includes an electric drive unit for driving the motor vehicle and a permanent brake deice 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 present disclosure also relates to a method for energy recovery in an electrically driven motor vehicle.
Claims19
A device for energy recovery for an electrically driven motor vehicle, the device comprising:
- an electric drive unit for driving the motor vehicle;
- a permanent brake device, which is designed as a hydrodynamic retarder and is or can be drivingly connected to the electric drive unit;
- and
- a waste heat recovery device with an expansion machine, which can be connected to the permanent brake device for energy recovery from a waste heat resulting from the braking of the permanent brake device.
A motor vehicle, comprising:
- a device for energy recovery for an electrically driven motor vehicle, the device including:
- an electric drive unit for driving the motor vehicle;
- a permanent brake device, which is designed as a hydrodynamic retarder and is or can be drivingly connected to the electric drive unit;
- and
- a waste heat recovery device with an expansion machine, which can be connected to the permanent brake device for energy recovery from a waste heat resulting from the braking of the permanent brake device.
A method for energy recovery in an electrically driven motor vehicle, comprising:
- providing a device for energy recovery for an electrically driven motor vehicle, the device including:
- an electric drive unit for driving the motor vehicle;
- a permanent brake device, which is designed as a hydrodynamic retarder and is or can be drivingly connected to the electric drive unit;
- and
- a waste heat recovery device with an expansion machine, which can be connected to the permanent brake device for energy recovery from a waste heat resulting from the braking of the permanent brake device;
- braking the motor vehicle by means of a permanent brake device, the permanent brake device designed as a hydrodynamic retarder and a waste heat recovery device having an expansion machine;
- and
- driving the expansion machine by means of waste heat of the permanent braking device.
Dependencies are inferred from the claim text.