18609135. AXIAL FLUX ELECTRIC MOTOR WITH ROTOR COOLING (GM GLOBAL TECHNOLOGY OPERATIONS LLC)
AXIAL FLUX ELECTRIC MOTOR WITH ROTOR COOLING
Organization Name
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor(s)
Vincent Fedida of Shanghai (CN)
SeungHwan Keum of Northville MI (US)
Alan G. Holmes of Clarkston MI (US)
AXIAL FLUX ELECTRIC MOTOR WITH ROTOR COOLING
This abstract first appeared for US patent application 18609135 titled 'AXIAL FLUX ELECTRIC MOTOR WITH ROTOR COOLING
Original Abstract Submitted
A cooled axial flux electric motor includes a rotationally-fixed stator defining a rotational axis and having a plurality of conductive stator magnetic poles arranged radially about the axis. The motor also includes a rotor spaced axially from one side from the stator and rotatably mounted coaxially with the rotational axis and defined by inside and outside diameters. The rotor has a first exterior surface facing the stator and a second exterior surface arranged opposite the first exterior surface. A ferromagnetic rotor core defines the rotor second exterior surface. The rotor also includes alternating south and north pole permanent magnets (PMs) arranged on the rotor core symmetrically around the axis and facing the stator. The rotor additionally includes channels extending radially outwardly across the rotor and configured to direct a coolant, via centrifugal force, from the inside diameter toward the outside diameter as the rotor rotates about the axis.
