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US 12,679,189 B2Granted
Drive unit for a vehicle, and vehicle
AssigneeZF Friedrichshafen AG
InventorsRayk Gersten, Stefan Renner, Karlheinz Hoher
Life of this patent
Estimating the term…
Abstract
A drive unit includes two coaxially aligned electric machines. Each electric machine includes a rotor and stator. Each stator has a stator core lamination packet on which stator coils are arranged. The ends of the stators form end-face coil ends. One coil end forms a switching side for connecting electric current and the other coil end forms a counter-switching side. A housing that accommodates the electric machines is provided. The first of the electric machines with its counter-switching side and the second of the electric machines with its counter-switching side are arranged in the shared housing in such manner that the counter-switching sides face toward one another in the axial direction.
Claims14
A drive unit for a vehicle, comprising:
- a first electric machine-comprising a first rotor mounted to rotate about a rotation axis, the rotation axis defining an axial direction, wherein the first rotor extends in the axial direction around the rotation axis, and the first electric machine further comprises a first stator arranged coaxially with the first rotor, wherein the first stator a stator core lamination packet on which first stator coils are arranged, wherein the first stator coils have a first coil end and a second coil end which form a first end face and a second end face, respectively, and wherein the first coil end forms a first switching side for connecting a current and the second coil end forms a first counter-switching side;
- a second electric machine mounted axially close to the first electric machine, wherein the second electric machine comprises a second rotor mounted to rotate, the second rotor extends in the axial direction around the rotation axis and comprises a second stator arranged coaxially therewith, the second stator comprising a second stator core lamination packet on which second stator coils are arranged, wherein the second stator coils have a third coil end and a fourth coil end which from a third end face and a fourth end face, respectively, wherein the fourth coil end forms a second switching side for connecting a current and the third coil end forms a second counter-switching side, wherein the second coil end has a projection that extends from the second end face axially away from the first stator, and the third coil end has a projection that extends from the third end face axially away from the second stator, wherein the projection of the second coil end is rotationally offset from the projection of the third coil end;
- and
- a housing configured to accommodate the first electric machine and the second electric machine, wherein the first electric machine and the second electric machine are arranged within the housing such that the first counter-switching side and the second counter-switching side face toward one another in the axial direction.
1 more element
A drive unit for a vehicle, comprising:
- a first electric machine comprising a first rotor mounted to rotate about a rotation axis, the rotation axis defining an axial direction, wherein the first rotor extends in the axial direction around the rotation axis, and the first electric machine further comprises a first stator arranged coaxially with the first rotor, wherein the first stator comprises a stator core lamination packet onto which first stator coils are arranged, wherein ends of the first stator coils form a first an end-face coil end and a second end-face coil end, and wherein the first end-face coil ends form a switching side for connecting a current and the second coil ends form a first counter-switching side;
- a second electric machine mounted axially close to the first electric machine, wherein the second electric machine comprises a second rotor mounted to rotate, the rotor extending in the axial direction around the rotation axis, and in addition comprises a second stator arranged coaxially therewith, the second stator comprising a second stator core lamination packet on which second stator coils are arranged, wherein ends of the second stator coils form a third end-face coil end and a fourth end-face coil end, wherein the fourth coil end forms a second switching side for connecting a current and the third coil end forms a second counter-switching side;
- and
- a housing configured to accommodate the first electric machine and the second electric machine, wherein the first electric machine is arranged with the first counter-switching side and the second electric machine is arranged with the second counter-switching side in the housing in such manner that the first counter-switching side and the second counter-switching side face toward one another in the axial direction;
- wherein a first coil connection area is provided at the first coil ends on the first switching side for interconnecting the first stator coils by means of a first interconnecting device;
- the second coil end of the first counter-switching side has an axial projection facing away from the first stator;
- and
- wherein a partition wall extends in a radial direction between the second coil end and the third coil end and the partition wall has a perforation in an area of a first axial projection that extends from the second coil end away from the first stator.
5 more elements
A drive unit for a vehicle, comprising:
- a first electric machine comprising a first rotor mounted to rotate about a rotation axis, the rotation axis defining an axial direction, wherein the first rotor extends in the axial direction around the rotation axis, and the first electric machine further comprises a first stator arranged coaxially with the first rotor, wherein the first stator comprises a stator core lamination packet onto which first stator coils are arranged, wherein ends of the first stator coils form a first an end-face coil end and a second end-face coil end, and wherein the first end-face coil ends form a switching side for connecting a current and the second coil ends form a first counter-switching side;
- a second electric machine mounted axially close to the first electric machine, wherein the second electric machine comprises a second rotor mounted to rotate, the rotor extending in the axial direction around the rotation axis, and in addition comprises a second stator arranged coaxially therewith, the second stator comprising a second stator core lamination packet on which second stator coils are arranged, wherein ends of the second stator coils form a third end-face coil end and a fourth end-face coil end, wherein the fourth coil end forms a second switching side for connecting a current and the third coil end forms a second counter-switching side;
- and
- a housing configured to accommodate the first electric machine and the second electric machine, wherein the first electric machine is arranged with the first counter-switching side and the second electric machine is arranged with the second counter-switching side in the housing in such manner that the first counter-switching side and the second counter-switching side face toward one another in the axial direction;
- wherein the third coil end of the second counter-switching side has a second axial projection facing away from the second stator;
- the second axial projection is arranged opposite to the second coil connection area;
- and
- wherein a partition wall extends in a radial direction between the second coil end and the third coil end and the partition wall has a perforation in an area of second axial projection that extends from the third coil end away from the second stator.
5 more elements
Dependencies are inferred from the claim text.