In-wheel motor with improved heat dissipation

A wheel assembly comprising:

• a stator comprising a spacing for receiving an electrical winding;
• a rotor defining an outer ring, the rotor housing the stator for relative rotation around the stator, the rotor comprising magnets for interacting with the electrical winding to provide the relative rotation about a central longitudinal axis, the rotor defining a hub and spokes extending from said hub, the spokes being distant to provide openings from which the air flows during rotation;
• and
• a cover covering at least the hub, and defining a free space with the rotor such that the air flow is forced to traverse through the stator and to be exhausted through the free space between the cover and the rotor;
• wherein the stator comprises openings extending from a stator proximal side to a stator distal side;
• and
• wherein rotation of the rotor around the stator causes an air flow through the openings for heat dissipation.

A vehicle comprising:

• a chassis;
• at least one wheel assembly comprising:
• a stator comprising a spacing for receiving an electrical winding;
• a rotor defining an outer ring, the rotor housing the stator for relative rotation around the stator, the rotor comprising magnets for interacting with the electrical winding to provide the relative rotation about a central longitudinal axis;
• the rotor defining a hub and spokes extending from said hub, the spokes being distant to provide openings from which the air flows during rotation;
• and
• a cover covering at least the hub, and defining a free space with the rotor such that the air flow is forced to traverse through the stator and to be exhausted through the free space between the cover and the rotor;
• wherein the stator comprises openings extending from a stator proximal side to a stator distal side;
• and
• wherein rotation of the rotor around the stator causes an air flow through the openings for heat dissipation;
• and
• a processor configured to drive electric current to the electrical winding of the at least one wheel assembly for controlling rotation of the at least one wheel assembly.