US 11,780,328 B2
Drive device for an electrically driven axle of a motor vehicle
Frank Seemann, Euerbach (DE); Paul Lenz, Waldkirchen (DE); Andreas Grossl, Kopfing (AT); Werner Hechberger, Fuerstenzell (DE); Kai Bornträger, Langenargen (DE); Maik Wörl, Immenstaad (DE); Marco Di Sarno, Osnabrück (DE); and Cong Ren, Suzhou (CN)
Assigned to ZF FRIEDRICHSHAFEN AG, Friedrichshafen (DE); and ZF DRIVETECH (SUZHOU) CO. LTD., Suzhou (CN)
Appl. No. 17/277,338
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE); and ZF Drivetech (Suzhou) Co. Ltd., Suzhou (CN)
PCT Filed Sep. 17, 2019, PCT No. PCT/EP2019/074787
§ 371(c)(1), (2) Date Mar. 18, 2021,
PCT Pub. No. WO2020/058235, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 10 2018 215 918.1 (DE), filed on Sep. 19, 2018.
Prior Publication US 2021/0347253 A1, Nov. 11, 2021
Int. Cl. B60K 17/04 (2006.01); B60K 1/02 (2006.01); B60K 1/00 (2006.01)
CPC B60K 17/046 (2013.01) [B60K 1/02 (2013.01); B60K 2001/001 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A drive device (1) for an electrically driven axle of a motor vehicle, comprising:
an electrically driven axle (5);
at least one electric machine (EM1, EM2);
a shiftable transmission (2) connected downstream from the at least one electric machine (EM1, EM2) in a direction of power flow for a traction operation, the transmission (2) comprising
a housing (G),
a first planetary gear set (6),
a second planetary gear set (7) connected in series with the first planetary gear set (6),
a first shift element (14), and
a second shift element (15); and
a differential (3) coupled to the transmission (2) for distributing drive torque to a wheel (4) of the electrically driven axle (5),
wherein a ring gear (8) of the first planetary gear set (6) has an external toothing;
wherein the at least one electric machine (EM1, EM2) engages with the external toothing of the ring gear (8) of the first planetary gear set (6) as an input to the transmission (2),
wherein a carrier (9) of the first planetary gear set (6) is rotationally fixed to a sun gear (11) of the second planetary gear set (7) as an output for the first planetary gear set (6),
wherein a sun gear (10) of the first planetary gear set (6) is detachably couplable to the housing (G) by the first shift element (14),
wherein a ring gear (12) of the second planetary gear set (7) is coupled to the housing (G),
wherein a carrier (13) of the second planetary gear set (7) is an output of the transmission (2), and
wherein the first planetary gear set (6) of the transmission (2) is interlockable by the second shift element (15).