ELECTRIC MOTOR ASSEMBLIES INCLUDING STATOR AND/OR ROTOR COOLING

摘要

An electric motor assembly including a stator having a stator core and windings around the stator core is disclosed. The stator core has opposing ends and an outer surface extending between the opposing ends. The electric motor assembly also includes a housing having an inner surface enclosing at least a portion of the stator, and at least one fluid passage between the outer surface of the stator core and the inner surface of the housing. The fluid passage permits a coolant in the fluid passage to contact one or more portions of the outer surface of the stator core to remove heat from the stator core during operation of the electric motor assembly. Additional motor assemblies including stator and/or rotor cooling features are disclosed.

主权项

1. An electric motor assembly capable of being cooled with a coolant, said motor assembly comprising:
a rotor rotatable about an axis; a stator including a stator core and windings wound about the stator core, said stator core including opposite first and second ends spaced along the axis, said stator core presenting an outer surface extending between the ends, said windings including end turns positioned at the first end of the stator core; a housing enclosing at least a portion of the stator, said housing including an inner surface that cooperates with the outer surface of the stator core to define a stator cooling passage through which coolant flows to remove heat from the stator core during operation of the assembly; and at least one orifice for directing coolant onto the end turns for removing heat from the end turns during operation of the assembly, said at least one orifice being in fluid communication with the stator-cooling passage.