Electric motor
AssigneeBrose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg
InventorsSunny ZHANG, Thomas SUSEMIHL, Kevin STEINERT
Life of this patent
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Abstract
A brushless electric motor having a stator and having a rotor which is drive-connected to a rotating element, wherein the rotor has a permanent-magnet rotor magnet which is magnetized in the manner of a Halbach arrangement, wherein the rotor magnet is an injection-molded part containing embedded magnetically anisotropic magnet material, which injection-molded part is formed at least partially from a ferrite, and wherein the rotor is integrated into the rotating element or is joined to said rotating element.
Claims20
A brushless electric motor comprising:
- a stator,
- a rotor including an injection-molded part and a permanent-magnet rotor magnet formed by magnetically anisotropic magnetic material magnetized to form a Halbach array, wherein the anisotropic magnetic material is at least partially formed by ferrite;
- and
- a rotating element integrally formed to the injection-molded part or connected to the rotor so that the rotor drives the rotating element.
A brushless motor comprising:
- a motor mount;
- a bearing shaft extending from the motor mount;
- a stator supported by the motor mount;
- a rotating element including an inner portion and an outer portion, wherein the inner portion is disposed on the bearing shaft;
- and
- a rotor disposed between the outer portion of the rotating element and the stator, wherein the rotor includes,
- a rotor core formed of plastic and integrally formed to the rotating element, and
- a permanent magnet formed by anisotropic magnetic material magnetized to form a Halbach array, wherein the anisotropic magnetic material is embedded in at least portions of the rotor core.
A brushless motor comprising:
- a motor mount;
- a bearing shaft extending from the motor mount;
- a rotor pot having a W-shaped cross section including an inner portion and an outer portion, wherein the inner portion is configured to rotate about the bearing shaft;
- a stator disposed between the motor mount and the rotor pot;
- and
- a rotor magnet fixed to the outer portion of the rotor pot, wherein the rotor magnet is formed by a magnetically anisotropic magnetic material magnetized to form a Halbach array.
Dependencies are inferred from the claim text.