US 11,987,111 B2
Integrated electric drive axle layout
Marco Silvestri, Rivoli (IT)
Assigned to DANA GRAZIANO S.R.L., Rivoli (IT)
Filed by DANA GRAZIANO S.R.L., Turin (IT)
Filed on Aug. 12, 2022, as Appl. No. 17/819,520.
Prior Publication US 2024/0051379 A1, Feb. 15, 2024
Int. Cl. F16H 57/037 (2012.01); B60K 1/00 (2006.01); B60K 17/08 (2006.01); B60K 17/16 (2006.01); B60T 1/00 (2006.01); F16H 37/08 (2006.01); F16H 57/021 (2012.01); H02K 7/00 (2006.01); H02K 7/116 (2006.01); H02K 9/19 (2006.01); F16H 57/02 (2012.01)
CPC B60K 1/00 (2013.01) [B60K 17/08 (2013.01); B60K 17/165 (2013.01); B60T 1/005 (2013.01); F16H 37/0813 (2013.01); F16H 57/021 (2013.01); F16H 57/037 (2013.01); H02K 7/003 (2013.01); H02K 7/116 (2013.01); H02K 9/19 (2013.01); B60K 2001/001 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02052 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An electric drive assembly, comprising:
an electric motor having a rotor shaft supported by a first rotor shaft bearing and a second rotor shaft bearing;
a gearbox having a layshaft which is parallel to but offset from the rotor shaft, where an input gear of the gearbox is mounted on the rotor shaft; and
a multi-piece housing, the multi-piece housing including:
a first housing section supporting the first rotor shaft bearing and a stator of the electric motor, where the first housing section defines an inner boundary of channels of a motor cooling jacket, where a liquid is circulated through the channels of the motor cooling jacket; and
a second housing section partially overlapping with the first housing section, the second housing section partially enclosing the gearbox and partially enclosing the electric motor, where the second housing section supports the second rotor shaft bearing, and where the second housing section defines an outer boundary of the motor cooling jacket;
where the second housing section at least partially encloses a differential which is directly rotationally coupled to the gearbox;
where a rotational axis of the rotor shaft is parallel to and offset from a rotational axis of the differential; and
where the second bearing is axially positioned between the input gear and a stator in the electric motor.