Drive device for an electrically driven vehicle
A drive device ( 2 ) for an at least partially electrically driven vehicle ( 1 ) includes an electric machine ( 3 ) having a rotor shaft ( 8 ) extending longitudinally along an input axis ( 4 ). The drive device further includes a first output shaft ( 6 a ) extending longitudinally along an output axis ( 7 ) and parallel to the rotor shaft ( 8 ). Moreover, the drive device includes a gear stage ( 5 ) having a first gearwheel ( 9 ) rotationally fixed to the rotor shaft ( 8 ), and a second gearwheel ( 10 ) meshed with the first gearwheel ( 9 ) and drivingly connected to the first output shaft ( 6 a ). Additionally, the drive device includes a housing ( 11 ) having a shared housing cavity ( 12 ), wherein the first output shaft ( 6 a ) and the electric machine ( 3 ) are parallel to one another in the housing cavity ( 12 ), and wherein an air gap ( 18 ) extends radially between the electric machine ( 3 ) and the first output shaft ( 6 a ).
1. A drive device ( 2 ) for an at least partially electrically driven vehicle ( 1 ), comprising:
an electric machine ( 3 ) having a rotor shaft ( 8 ) extending longitudinally along an input axis ( 4 );
a first output shaft ( 6 a ) extending longitudinally along an output axis ( 7 ), the output axis ( 7 ) being parallel to the rotor shaft ( 8 );
a gear stage ( 5 ) drivingly connecting the rotor shaft ( 8 ) to the first output shaft ( 6 a ), the gear stage ( 5 ) having a first gearwheel ( 9 ) rotationally fixed to the rotor shaft ( 8 ), and a second gearwheel ( 10 ) meshed with the first gearwheel ( 9 ) and drivingly connected to the first output shaft ( 6 a ); and
a housing ( 11 ) having a shared housing cavity ( 12 ),
wherein the first output shaft ( 6 a ) and the electric machine ( 3 ) are parallel to one another in the shared housing cavity ( 12 ), and
wherein an air gap ( 18 ) extends radially between the electric machine ( 3 ) and the first output shaft ( 6 a ).
2. The drive device ( 2 ) of claim 1 , further comprising:
a second output shaft ( 6 b ); and
a differential ( 13 ) drivingly connected to the rotor shaft ( 8 ) via the gear stage ( 5 ),
wherein the differential ( 13 ) distributes drive power to the first output shaft ( 6 a ) and the second output shaft ( 6 b ).
3. The drive device ( 2 ) of claim 2 , wherein the second gearwheel ( 10 ) of the gear stage ( 5 ) is a differential gear of the differential ( 13 ).
4. The drive device ( 2 ) of claim 1 , further comprising a first bearing element ( 14 ) mounting the first output shaft ( 6 a ) in a passage ( 15 ) extending through the housing ( 11 ) such that the first output shaft ( 6 a ) is rotatable with respect to the housing ( 11 ).
5. The drive device ( 2 ) of claim 4 , wherein the shared housing cavity ( 12 ) is spatially delimited by a housing cover ( 11 a ), wherein the first bearing element ( 14 ) is arranged at the housing cover ( 11 a ).
6. The drive device ( 2 ) of claim 1 , further comprising a collecting chamber ( 17 ) for one or both of a coolant and a lubricant, the collecting chamber ( 17 ) being fluidically connected to the shared housing cavity ( 12 ).
7. The drive device ( 2 ) of claim 6 , further comprising a pump ( 16 ) in the collecting chamber ( 17 ), the pump ( 16 ) delivering the one or both of the coolant and the lubricant.
8. The drive device ( 2 ) of claim 6 , wherein the collecting chamber ( 17 ) is fluidically connected to at least one guide duct ( 19 ) of the housing ( 11 ).
9. The drive device ( 2 ) of claim 8 , wherein the at least one guide duct ( 19 ) is formed by an internal shell of the housing ( 11 ) adjacent the first output shaft ( 6 a ).
10. A vehicle ( 1 ), comprising the drive device ( 2 ) of claim 1 .