Patent ID: 8648506
Filing Date: 2014-02-11
Classification: H02K

Abstract:
1. An electric machine module comprising; an electric machine including a rotor assembly, the rotor assembly including: the first set of rotor laminations are positioned relative to one another so that each of the at least one coolant openings substantially align to form separate coolant paths on each axial side of the rotor assembly, wherein each coolant path extends from a substantially central location within the rotor assembly in a substantially axial direction along a portion of the axial length of the rotor assembly; and wherein the coolant paths are configured and arranged to allow liquid to flow axially outward through the coolant paths to drain into a machine cavity; at least one substantially circumferential flow channel disposed substantially around a circumference of the rotor hub, the at least one substantially circumferential flow channel defined between the first set of rotor laminations, the second set of rotor laminations, and the rotor hub, the at least one substantially circumferential flow channel defining at least a portion of the coolant paths.