US 12,220,977 B2
Drive unit for a drive axle of a vehicle
Niclas Raeder, Bermatingen (DE)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed on Mar. 29, 2023, as Appl. No. 18/192,044.
Claims priority of application No. 10 2022 203 098.2 (DE), filed on Mar. 30, 2022.
Prior Publication US 2023/0311629 A1, Oct. 5, 2023
Int. Cl. B60K 17/16 (2006.01); B60K 1/02 (2006.01); B60K 17/08 (2006.01); F16H 48/06 (2006.01)
CPC B60K 1/02 (2013.01) [B60K 17/08 (2013.01); B60K 17/16 (2013.01); F16H 48/06 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A drive unit for a drive axle of a vehicle, comprising:
a first electric machine;
a second electric machine;
a differential with a differential input and two differential output shafts configured to be drivingly connected each to a respective drive wheel of the drive axle; and
a transmission comprising a first transmission input shaft and configured for connecting to the first electric machine, a second transmission input shaft configured for connecting to the second electric machine, a transmission output shaft configured for connecting to the differential, a first shifting unit with a first shifting element a second shifting element and a third shifting element, a second shifting unit with a fourth shifting element and a fifth shifting element, and two planetary gearsets coupled to one another;
wherein:
the first planetary gearset comprises a first sun gear shaft, first ring gear shaft, and a first web shaft;
the second planetary gearset comprises a second sun gear shaft, a second ring gear shaft, and a second web shaft;
the first web shaft is connected rotationally fixed to the second ring gear shaft;
the first sun gear shaft is connected rotationally fixed to the first transmission input shaft;
the first ring gear shaft is fixed and immobilized on a rotationally fixed component;
the second web shaft is connected rotationally fixed to the transmission output shaft;
by means of the first shifting element the second sun gear shaft is configured to be connected rotationally fixed to a rotationally fixed component;
by means of the second shifting element two of the three shafts of the second planetary gearset are configured to be connected rotationally fixed to one another;
by means of the third shifting element the second sun gear shaft is configured to be connected rotationally fixed to the first transmission input shaft; and
the differential is arranged with its axis parallel to the two electric machines and to the transmission, and the transmission output shaft is drivingly connected to the differential input by means of a first spur gear stage.