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

Claim 6:
7. An electric motor comprising a rotor and a stator, the stator comprising:
a yoke;
a plurality of teeth 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;
at least one radial baffle located over axial ends of the plurality of teeth;
a first coolant circulation path including a first coolant channel defined below the field coils and between the first radial ends of adjacent teeth and a second coolant channel defined above the field coils and between the second 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 the plurality of teeth, and a fourth coolant channel defined between the at least one radial baffle and inside the field coil portions located at axial ends of the plurality of teeth, the first coolant circulation path being in fluid communication with the second coolant circulation path such that coolant circulated to the yoke passes through both the first coolant circulation path and through the second coolant circulation path in use.