US 12,228,198 B1
Electric drive system for a motor vehicle
Peter Appeltauer, Fellbach (DE); Tobias Schilder, Ludwigsburg (DE); Tobias Haerter, Stuttgart (DE); Jonathan Zeibig, Aalen (DE); Peter Hahn, Stuttgart (DE); Andreas Kolb, Wernau (DE); and Klaus Riedl, Tübingen (DE)
Assigned to MERCEDES-BENZ GROUP AG, Stuttgart (DE)
Appl. No. 18/716,655
Filed by MERCEDES-BENZ GROUP AG, Stuttgart (DE)
PCT Filed Nov. 8, 2022, PCT No. PCT/EP2022/081030
§ 371(c)(1), (2) Date Jun. 5, 2024,
PCT Pub. No. WO2023/104414, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. 10 2021 006 011.3 (DE), filed on Dec. 6, 2021.
Int. Cl. F16H 48/36 (2012.01); B60K 1/02 (2006.01); F16H 3/64 (2006.01); F16H 48/10 (2012.01); F16H 48/20 (2012.01); F16H 48/38 (2012.01); F16H 57/037 (2012.01); F16H 57/02 (2012.01)
CPC F16H 48/10 (2013.01) [B60K 1/02 (2013.01); F16H 3/64 (2013.01); F16H 48/20 (2013.01); F16H 48/36 (2013.01); F16H 48/38 (2013.01); F16H 57/037 (2013.01); F16H 2048/104 (2013.01); F16H 2048/106 (2013.01); F16H 2048/364 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02052 (2013.01); F16H 2200/0021 (2013.01); F16H 2200/2007 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An electric drive system for a motor vehicle, the electric drive system comprising:
a first electric machine with a first rotor;
a second electric machine with a second rotor; and
a reduced coupling gearing comprising a first planetary gear set, a second planetary gear set, a first input shaft, a second input shaft, a first output shaft, and a second output shaft,
wherein the first input shaft is configured to introduce first torques emanating from the first electric machine into the reduced coupling gearing,
wherein the second input shaft is configured to introduce second torques emanating from the second electric machine into the reduced coupling gearing,
wherein the first output shaft is configured to divert third torques from the reduced coupling gearing,
wherein the second output shaft is configured to divert fourth torques from the reduced coupling gearing,
wherein the first planetary gear set has a first element connected or connectable for conjoint rotation to the first rotor, a second element connected for conjoint rotation to the first output shaft, and a third element connected for conjoint rotation to the second output shaft,
wherein the second planetary gear set has a fourth element connected for conjoint rotation to the second rotor and a fifth element connected for conjoint rotation to the second element,
wherein the second planetary gear set has a sixth element connected for conjoint rotation to the third element,
wherein a first stationary gear ratio of the first planetary gear set has a same value and an opposite sign compared to a second stationary gear ratio of the second planetary gear set,
wherein the first element of the first planetary gear set is a first ring gear,
wherein the fourth element of the second planetary gear set is a second ring gear,
wherein the third element of the first planetary gear set is a first sun gear, and
wherein the sixth element of the second planetary gear set is a second sun gear.