Patent attributes
A cooling assembly is disclosed for use with an electric machine having a housing, a shaft rotatably supported within the housing, a rotor operatively coupled to rotate with the shaft, and a stator annularly surrounding the rotor. The cooling assembly may have an axial passage formed along a longitudinal axis of the shaft and configured to direct cooling oil from a first end of the shaft towards a second end of the shaft opposite the first end of the shaft. The cooling assembly may also have an angled passage fluidly connected to the axial passage and configured to redirect the cooling oil towards a gap between an outer surface of the rotor and an inner surface of the stator. The cooling assembly may further have an arcuate groove formed along the outer surface of the rotor and configured to sling the cooling oil towards opposing ends of the rotor.
