Patent ID: 11876419
Assignee: JOBY AERO, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. An electric motor comprising a rotor and a stator, the stator comprising:
a yoke;
a plurality of teeth mounted to the yoke and being aligned substantially parallel to an axis of rotation of the motor, each tooth including a first radial end adjacent to the yoke and a second radial end extending from the yoke;
a plurality of field coils, each field coil being wrapped around a tooth;
a plurality of radial baffles, each radial baffle being located between an axial end of a tooth and a corresponding field coil;
a first coolant circulation path including a first coolant channel defined between adjacent field coils and a second coolant channel defined between adjacent field coils and between the first radial ends of adjacent teeth; and
a second coolant circulation path including a third coolant channel defined outside field coil portions located at axial ends of each of the plurality of teeth, and a fourth coolant channel defined between each of the plurality of radial baffles and inside the corresponding field coil portion, the first coolant circulation path at a particular tooth being in fluid communication with the second coolant circulation path at the particular tooth such that coolant circulated to the yoke passes through both the first coolant circulation path and through the second coolant circulation path in use.