Electric drive train for a motor vehicle, in particular for a motor car
AssigneeMercedes-Benz Group AG
InventorPeter Hahn
Life of this patent
Estimating the term…
Abstract
An electric drive train for a motor vehicle having first and second electric engines and a planetary gearbox which has a first shaft, a second shaft, a third shaft, a fourth shaft and a fifth shaft, and first and second vehicle wheels. With regard to a torque flow originating from the electric engines running to the vehicle wheels, the electric engines are arranged upstream of the planetary gearbox, which is arranged upstream of the vehicle wheels in the torque flow. A first switching element is provided to couple the second rotor to the first shaft.
Claims11
An electric drive train for a motor vehicle, the electric drive train comprising:
- a first electric engine comprising a first rotor;
- a second electric engine comprising a second rotor;
- a planetary gearbox comprising a first shaft, a second shaft, a third shaft, a fourth shaft, and a fifth shaft;
- a first vehicle wheel;
- a second vehicle wheel, wherein, with regard to a torque flow originating from the first and second electric engines and running to the first and second vehicle wheels, the first and second electric engines are arranged upstream of the planetary gearbox, and the planetary gearbox is arranged upstream of the first and second vehicle wheels in the torque flow;
- a first switching element configured to couple the second rotor to the first shaft in such a way that torques suppliable by the second electric engine via the second rotor are introducible at the first shaft into the planetary gearbox;
- a second switching element, which is a power shift switching element and is configured to connect the third shaft to a sixth shaft to conjointly rotate;
- a third switching element, which is a form-fitting coupling configured to connect the second shaft or the fourth shaft to the sixth shaft of the electric drive train to conjointly rotate;
- a first transmission stage which, with regard to the torque flow, is arranged downstream of the planetary gearbox and upstream of the first vehicle wheel in the torque flow, wherein the fourth shaft is coupled to or is couplable to the first vehicle wheel via the first transmission stage;
- and
- a second transmission stage which, with regard to the torque flow, is arranged downstream of the planetary gearbox and upstream of the second vehicle wheel in the torque flow, wherein the fifth shaft is coupled to or is couplable to the second vehicle wheel via the second transmission stage, and
- wherein a first transmission of the first transmission stage is different than a second transmission of the second transmission stage.
Dependencies are inferred from the claim text.