Hybrid module including rotor having coolant flow channels
AssigneeSchaeffler Technologies AG & Co. KG
InventorEric Ubelhart
Life of this patent
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Abstract
An electric motor includes a rotor rotatable about a center axis. The rotor includes a plurality of magnets and a plurality of radially extending channels extending radially outward from an inner circumferential surface of the rotor to provide fluid to the magnets. A method of constructing an electric motor includes creating a rotor rotatable about a center axis to include a plurality of magnets and a plurality of radially extending channels extending radially outward from an inner circumferential surface of the rotor to provide fluid to the magnets.
Claims19
An electric motor comprising:
- a rotor rotatable about a center axis, the rotor including a plurality of magnets and a plurality of radially extending channels extending radially outward from an innermost circumferential surface of the rotor while extending axially and circumferentially in the rotor to provide fluid to the magnets,
- the rotor being formed by a plurality of plates stacked in an axial direction, each of the plates including holes extending axially therethrough, the radially extending channels being formed by the holes, at least some of the holes each being circumferentially and radially offset from adjoining holes of directly axially adjacent plates, each of the plates including magnet receiving slots extending axially therethrough, the magnet receiving slots receiving the magnets.
An electric motor comprising:
- a rotor rotatable about a center axis, the rotor including a plurality of magnets and a plurality of radially extending channels extending radially outward from an inner circumferential surface of the rotor to provide fluid to the magnets,
- the rotor being formed by a plurality of plates stacked in an axial direction, each of the plates including holes extending axially therethrough, the radially extending channels being formed by the holes, each of the plates including magnet receiving slots extending axially therethrough, the magnet receiving slots receiving the magnets,
- wherein the radially extending channels have a stepped configuration,
- wherein the holes are partially radially overlapping holes,
- wherein the radially overlapping holes form the radially extending channels by the hole in each consecutive one of the plates in the axial direction being progressively further radially outward from the center axis,
- wherein the plates have an identical configuration and are rotationally oriented such that each of the plates has a different rotational orientation than a directly axially adjacent one of the plates,
- wherein each of the plates is rotationally offset from the directly axially adjacent plate by a same angle,
- wherein each of the plates includes a plurality of circumferential sectors, each of the sectors includes a plurality of the holes, the holes of each circumferential sector having a different configuration.
A hybrid module configured for arrangement in the torque path upstream from a transmission and downstream from an internal combustion engine, the hybrid module comprising:
- an electric motor comprising a rotor rotatable about a center axis, the rotor including a plurality of magnets and a plurality of radially extending channels extending radially outward from an inner circumferential surface of the rotor to provide fluid to the magnets, the electric motor further comprising a rotor carrier including radially extending holes passing therethrough to provide fluid to the inner circumferential surface of the rotor;
- and
- a torque converter including a front cover, the rotor carrier being fixed to the front cover.
Dependencies are inferred from the claim text.