Rotor, electric machine and kit of parts
AssigneeSchaeffler Technologies AG & Co. KG
InventorJean-Francois HELLER
Life of this patent
Estimating the term…
Abstract
A rotor for an electric machine wherein: the rotor comprises at least a first rotor body having a first group of permanent magnets, and a second rotor body having a second group of permanent magnets; the first rotor body and the second rotor body can be rotated relative to one another about a common axis of rotation, against the effect of a first torsional stiffness mechanism, by a mechanical field-attenuation mechanism having a first mechanical stop which limits the rotation of the two rotor bodies relative to one another in a first circumferential direction, and a second mechanical stop which limits the rotation of the two rotor bodies relative to one another in a second circumferential direction.
Claims17
A rotor for an electric machine use within comprising:
- at least a first rotor body with a first group of permanent magnets and a second rotor body with a second group of permanent magnets, wherein the first rotor body and the second rotor body can be rotated relative to one another about a common axis of rotation, against the effect of a first torsional stiffness mechanism, by a mechanical field-attenuation mechanism, wherein the field-attenuation mechanism has a first mechanical stop which limits the rotation of the two rotor bodies relative to one another in a first circumferential direction, and a second mechanical stop which limits the rotation of the two rotor bodies, relative to one another in a second circumferential direction, wherein
- the field-attenuation mechanism has a hub which is coupled to a rotor shaft of the rotor for conjoint rotation, wherein the first rotor body is coupled to a first annular stop disc and the second rotor body is coupled to a second annular stop disc, and both the first stop disc and the second stop disc are positioned at an end of the first rotor body that points out of the rotor.
An electric machine for a drive train of a hybrid-electric or fully electric motor vehicle, comprising:
- a rotor having at least a first rotor body with a first group of permanent magnets and a second rotor body with a second group of permanent magnets, wherein the first rotor body and the second rotor body can be rotated relative to one another about a common axis of rotation, against the effect of a first torsional stiffness mechanism, by a mechanical field-attenuation mechanism, wherein the field-attenuation mechanism has a first mechanical stop which limits the rotation of the two rotor bodies relative to one another in a first circumferential direction, and a second mechanical stop which limits the rotation of the two rotor bodies relative to one another in a second circumferential direction, wherein the field-attenuation mechanism has a hub which is coupled to a rotor shaft of the rotor for conjoint rotation, wherein the first rotor body is coupled to a first annular stop disc and the second rotor body is coupled to a second annular stop disc, and both the first stop disc and the second stop disc are positioned at an end of the first rotor body that points out of the rotor.
A kit-of-parts for forming a field-attenuation mechanism of a rotor of an electric machine, comprising:
- a hub which can be coupled to a rotor shaft of the rotor of the electric machine for conjoint rotation,
- a first annular stop disc which can be coupled to a first rotor body of the rotor and
- a second annular stop disc which can be coupled to a second rotor body of the rotor,
- wherein both the first stop disc and the second stop disc can be positioned at an end of the first rotor body that points out of the rotor, wherein a first mechanical stop can be formed between the hub and the first stop disc and a second mechanical stop can be formed between the hub and the second stop disc.
Dependencies are inferred from the claim text.