US 12,247,649 B2
Electric drive device for a vehicle axle
Tobias Schilder, Ludwigsburg (DE); Philip Gansloser, Bad Ditzenbach (DE); and Tobias Haerter, Stuttgart (DE)
Assigned to MERCEDES-BENZ GROUP AG, Stuttgart (DE)
Appl. No. 18/294,252
Filed by MERCEDES-BENZ GROUP AG, Stuttgart (DE)
PCT Filed Jul. 26, 2022, PCT No. PCT/EP2022/070892
§ 371(c)(1), (2) Date Feb. 1, 2024,
PCT Pub. No. WO2023/011978, PCT Pub. Date Feb. 9, 2023.
Claims priority of application No. 10 2021 003 969.6 (DE), filed on Aug. 2, 2021.
Prior Publication US 2024/0344599 A1, Oct. 17, 2024
Int. Cl. B60K 1/02 (2006.01); B60K 17/08 (2006.01); B60K 17/16 (2006.01); F16H 37/08 (2006.01); F16H 3/10 (2006.01)
CPC F16H 37/0806 (2013.01) [B60K 1/02 (2013.01); B60K 17/08 (2013.01); B60K 17/165 (2013.01); F16H 3/10 (2013.01); F16H 2200/0021 (2013.01); F16H 2200/0039 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An electric drive device for a vehicle axle, the electric drive device comprising:
a first electric engine having a first rotor;
a second electric engine having a second rotor;
a transmission having a first input shaft arranged coaxially with the first rotor, a second input shaft arranged coaxially with the second rotor, and at least one output shaft arranged in parallel with the first input shaft and in parallel with the second input shaft, wherein the first input shaft is connected to the first rotor in a manner fixed against rotation, and wherein the second input shaft is connected or is connectable to the second rotor in a manner fixed against rotation;
an axle drive, which has a differential gear permanently meshing with a first drive gearwheel connected to the at least one output shaft in a manner fixed against rotation;
a first switchable spur gear pairing configured to couple the first input shaft with the differential gear in a torque-transmitting manner; and
a second spur gear pairing configured to couple the second input shaft with the differential gear in a torque-transmitting manner,
wherein, when viewed in an axial direction along the at least one output shaft, the first electric engine, the first spur gear pairing, the first drive gearwheel, the second spur gear pairing and the second electric engine are arranged one after the other in the specified order,
wherein a third gearwheel is arranged coaxially with the second input shaft,
wherein the second rotor and the second input shaft are couplable in a manner fixed against rotation to the third gearwheel by a coupling element to interrupt power flow in at least one direction of rotation,
wherein the first drive gearwheel and the coupling element are arranged overlapping each other in the axial direction, and
wherein the coupling element is a freewheel.