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US 12,680,603 B2Granted
Layout for electrical drive unit
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsMichael Hombauer, Michael Mainusch, Georg Johann Meingassner
Life of this patent
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Abstract
An electrical drive unit includes an electric motor having a first transverse end and an opposite second transverse end, and a gearbox including a main gearbox portion and a transverse projection portion. The motor is attached to the gearbox at the second transverse end of the motor and is located on a first transverse side of the main gearbox portion in a first transverse direction. The transverse projection portion of the gearbox includes at least one gear of the gearbox and extends from the first transverse side of the main gearbox portion such that the transverse projection portion and at least a portion of the at least one gear extends in the first transverse direction beyond the second transverse end of the motor.
Claims20
An electrical drive unit assembly for a vehicle comprising:
- an electrical drive unit comprising:
- an electric motor having a first transverse end extending in a first transverse direction and an opposite second transverse end extending in a second transverse direction, wherein the first transverse direction is opposite from the second transverse direction;
- a motor shaft extending in the second transverse direction out of the motor;
- a gearbox including a main gearbox portion and a transverse projection portion;
- and
- a housing comprising:
- a motor housing portion including a first transverse end extending in the first transverse direction, and a second transverse end extending in the second transverse direction;
- and
- a main gearbox housing portion including a first transverse end extending in the first transverse direction, and a second transverse end extending in the second transverse direction,
- wherein the motor housing portion and the main gearbox housing portion meet at the second transverse end of the motor housing portion and the first transverse end of the main gearbox housing portion,
- wherein the housing comprises a central housing comprising a single cast and/or machined housing part that forms at least a portion of the main gearbox housing portion and at least a portion of the motor housing portion,
- wherein the central housing includes a first transverse end extending in the first transverse direction, and a second transverse end extending in the second transverse direction,
- wherein the motor includes a stator having a first transverse end in the first transverse direction and a second transverse end in the second transverse direction, and
- wherein the first transverse end of the central housing extends in the first transverse direction beyond the first transverse end of the stator, such that the first transverse end of the stator exists entirely within the portion of the central housing forming the at least the portion of the motor housing portion,
- wherein the motor shaft extends out of and past the second transverse end of the motor housing portion, past the first transverse end of the main gearbox housing portion, and into the main gearbox housing portion,
- wherein the motor is attached to the gearbox via an input gear of the gearbox attached to the motor shaft, wherein the motor is located on a first transverse side of the main gearbox portion in the first transverse direction at least via the motor shaft,
- wherein the transverse projection portion includes at least one gear of the gearbox and extends from the first transverse side of the main gearbox portion in the first transverse direction,
- wherein the transverse projection portion and at least a portion of the at least one gear extends in the first transverse direction beyond the second transverse end of the motor housing portion,
- wherein the first transverse end of the motor housing portion is located on a first side of a centerline of the electrical drive unit in the first transverse direction, and where the second transverse end of the motor housing portion is located on a second side of the centerline of the electrical drive unit in the second transverse direction, and
- wherein the input gear is located entirely on the second side of the centerline of the electrical drive unit in the second transverse direction.
17 more elements
An electric vehicle comprising an electrical drive unit, the electrical drive unit comprising:
- an electric motor having a first transverse end extending in a first transverse direction and an opposite second transverse end extending in a second transverse direction, wherein the first transverse direction is opposite from the second transverse direction;
- a motor shaft extending in the second transverse direction out of the motor;
- a gearbox including a main gearbox portion and a transverse projection portion;
- and
- a housing comprising:
- a motor housing portion including a first transverse end extending in the first transverse direction, and a second transverse end extending in the second transverse direction;
- and
- a main gearbox housing portion including a first transverse end extending in the first transverse direction, and a second transverse end extending in the second transverse direction,
- wherein the motor housing portion and the main gearbox housing portion meet at the second transverse end of the motor housing portion and the first transverse end of the main gearbox housing portion,
- wherein the motor shaft extends out of and past the second transverse end of the motor housing portion, past the first transverse end of the main gearbox housing portion, and into the main gearbox housing portion,
- wherein the second transverse end of the motor is attached to the gearbox on a first transverse side of the main gearbox portion in the first transverse direction,
- wherein the transverse projection portion includes at least one gear of the gearbox and extends from the first transverse side of the main gearbox portion in the first transverse direction,
- wherein the transverse projection portion and at least a portion of the at least one gear extends in the first transverse direction beyond the second transverse end of the motor housing portion,
- wherein the first transverse end of the motor housing portion is located on a first side of a centerline of the electrical drive unit in the first transverse direction, and where the second transverse end of the motor housing portion is located on a second side of the centerline of the electrical drive unit in the second transverse direction,
- wherein an interface between an input gear of the gearbox that is attached to the motor shaft and at least one other gear of the gearbox is located entirely on the second side of the centerline of the electrical drive unit in the second transverse direction,
- wherein the transverse projection portion includes two drive shaft openings, and
- wherein the electrical drive unit includes a battery voltage connector located such that the two drive shaft openings are situated between the battery voltage connector and the motor shaft.
14 more elements
Dependencies are inferred from the claim text.