Structural stator core
AssigneeWisk Aero LLC
InventorDhananjai Saranadhi
Life of this patent
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Abstract
Electric motors and related methods employ a stator assembly as part of a housing assembly that reacts output shaft loads to a mounting base. An electric motor includes an output shaft, a rotor coupled to the output shaft, a first housing, a first bearing assembly coupled to the first housing, a second housing, a second bearing assembly coupled to the second housing, and a stator assembly. The stator assembly includes a structural stator core member and stator coils. The structural stator core member extends circumferentially around the output shaft. The second housing is coupled to the first housing by the stator core.
Claims20
An electric motor comprising:
- an output shaft having an output shaft rotational axis;
- a rotor coupled to the output shaft;
- a first bearing assembly provided between a first housing and a first section of the output shaft;
- a second bearing assembly provided between a second housing and a second section the output shaft;
- and
- a stator assembly comprising a stator core and stator coils, wherein the stator core comprises a stator back iron, stator teeth, and stator-to-housing attachment features, wherein the second housing is coupled to the first housing by the stator core via the stator-to-housing attachment features passing through the first housing, the stator back iron and the second housing;
- wherein the stator back iron extends circumferentially around the output shaft rotational axis, wherein each of the stator teeth extend radially inward toward the output shaft rotational axis from the stator back iron between the stator-to-housing attachment features and the rotor;
- and wherein each of the stator coils extends circumferentially around a respective one of the stator teeth;
- and
- cooling fins provided on an outer-circumferential surface of the stator back iron.
An electric motor comprising:
- an output shaft having an output shaft rotational axis;
- a rotor coupled to the output shaft;
- a first housing and a second housing configured to receive the output shaft through a central opening;
- and
- a stator assembly comprising a stator core and stator coils, wherein the stator core comprises a stator back iron, stator teeth, and stator-to-housing attachment features, wherein the second housing is coupled to the first housing by the stator core via the stator-to-housing attachment features passing through the first housing, the stator back iron and the second housing;
- wherein the stator back iron extends circumferentially around the output shaft rotational axis, wherein each of the stator teeth extend radially inward toward the output shaft rotational axis from the stator back iron between the stator-to-housing attachment features and the rotor;
- and wherein each of the stator coils extends circumferentially around a respective one of the stator teeth;
- and
- cooling fins provided on an outer-circumferential surface of the stator back iron.
Dependencies are inferred from the claim text.