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US 11,456,630 B2Granted
Rotor and method for producing a rotor
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsEndre Barti, Florian Beck, Daniel Loos
Life of this patent
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Abstract
A rotor for an electrical machine has at least one groove, the at least one groove includes a groove bottom and groove walls. A separating element is provided between the groove walls, and extends along the groove. The separating element is arranged on the groove bottom, at least in sections, such that groove chambers are formed along the groove.
Claims9
A rotor for an electric machine, comprising:
- a plurality of grooves, wherein each groove of the plurality of grooves has a groove bottom and groove walls;
- and
- a plurality of separating elements, wherein:
- each separating element of the plurality of separating elements is provided between the groove walls of a respective groove of the plurality of grooves and extends along the respective groove,
- each separating element is arranged on the groove bottom of the respective groove such that groove chambers are formed along the respective groove,
- each separating element is positioned at a respective location where two respective flow fronts of potting compound injected into the rotor would meet each other in the absence of the separating element, and
- each separating element is positioned at an equal distance from two injection points through which the potting compound is injected.
4 more elements
A method for producing a rotor, comprising:
- arranging a rotor in an injection mold, the rotor comprising:
- a plurality of grooves, wherein each groove of the plurality of grooves has a groove bottom and groove walls;
- and
- a plurality of separating elements, wherein:
- each separating element of the plurality of separating elements is provided between the groove walls of a respective groove of the plurality of grooves and extends along the respective groove,
- each separating element is arranged on the groove bottom of the respective groove such that groove chambers are formed along the respective groove, and
- each separating element is positioned at a respective location where two respective flow fronts of potting compound injected into the rotor would meet each other in the absence of the separating element;
- providing a plurality of injection points through which the potting compound is injected, wherein the injection points are positioned such that each separating element is arranged at an equal distance from two of the injection points;
- and
- axially encapsulating or overmolding the rotor with the potting compound.
7 more elements
Dependencies are inferred from the claim text.