| CPC H02K 1/185 (2013.01) [H02K 1/20 (2013.01)] | 8 Claims |
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1. A stator assembly for an electric machine, the stator assembly comprising:
a plurality of stator laminations arranged in a stacked configuration, wherein each stator lamination is generally annular and includes a plurality of stator teeth extending radially inward from a back iron;
a plurality of evenly spaced apertures formed in each of the stator laminations, wherein the plurality of apertures of the plurality of stator laminations are aligned to form a plurality of channels in the stacked configuration; and
a damping material disposed in at least one channel of the plurality of channels and configured to increase stiffness in the stacked configuration and reduce noise/vibration/harshness (NVH) in the electric machine,
wherein the apertures of the plurality of apertures are formed in the back iron and arranged circumferentially along an outer diameter of the back iron,
wherein the plurality of apertures includes a first portion of apertures and a second portion of apertures,
wherein the first portion of apertures is arranged circumferentially on each stator lamination,
wherein the second portion of apertures is arranged circumferentially on each stator lamination in a location radially inward of the first portion of apertures,
wherein the channels formed by the first portion of apertures are configured to receive a flow of coolant fluid for cooling the stator assembly, and
wherein the channels formed by the second portion of apertures include the damping material disposed therein.
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