Cooling assemblies for outer rotor electric motors
AssigneeDonut Lab Development Oü
InventorsGareth Roberts, Joshua Best, Ville Piippo
Life of this patent
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Abstract
Cooling assemblies for outer rotor electric motors are disclosed. An example electric motor includes a stator, a rotor, and a heat exchanger. The stator has a central axis. The rotor circumscribes the stator. The rotor is configured to rotate relative to the stator. The heat exchanger is coupled to the stator. The stator circumscribes the heat exchanger. The heat exchanger includes a plurality of fins extending in a radially inward direction away from the stator and toward the central axis. In some examples, the fins are circumferentially oriented. In other examples, the fins are axially oriented. In still other examples, the fins are helically oriented.
Claims20
An electric motor, comprising:
- a stator having a central axis;
- a rotor circumscribing the stator, the rotor configured to rotate relative to the stator;
- and
- a heat exchanger coupled to the stator, the stator circumscribing the heat exchanger, the heat exchanger including a plurality of fins extending in a radially inward direction away from the stator and toward the central axis.
An in-wheel electric motor, comprising:
- a stator including:
- a core having a central axis;
- a plurality of teeth extending in a radially outward direction away from the core, respective ones of the plurality of teeth being spaced apart from one another by respective ones of a plurality of slots;
- and
- a plurality of edgewise coils, respective ones of the plurality of edgewise coils being radially loaded onto corresponding respective ones of the plurality of the teeth;
- a rotor circumscribing the stator, the rotor configured to rotate relative to the stator;
- and
- a heat exchanger coupled to the stator, the stator circumscribing the heat exchanger, the heat exchanger including a plurality of fins extending in a radially inward direction away from the stator and toward the central axis, the heat exchanger further including an interface layer located between the core of the stator and the plurality of fins of the heat exchanger.
Dependencies are inferred from the claim text.