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US 12,732,076 B2Granted
Electric motor
AssigneeElectric Torque Machines, Inc.
InventorsJarrod C. Drexler, Douglas S. Ryder, Tyler K. Williams
Life of this patent
Estimating the term…
Abstract
An electric motor includes a rotor and a stator that includes a plurality of coils arrayed along a rotational axis of the rotor. The rotor is potted with potting compound. The stator is potted with potting compound. Each coil of the stator is electrically connected to a power source to receive operating power from the power source. The coils are powered to cause the stator to electromagnetically drive rotation of the rotor on the rotational axis.
Claims19
An electric motor comprising:
- a rotor configured to rotate on an axis to generate a mechanical output, the rotor comprising a rotor body and a permanent magnet array;
- a stator spaced radially relative to the rotor and disposed about the rotational axis, the stator comprising a plurality of coils spaced axially along the axis, the plurality of coils including at least three coils;
- and
- a stator bar extending along the axis, the stator bar having a first axial end and a second axial end and including a plurality of terminals forming an end interface at the first axial end, the stator bar electrically connecting the plurality of coils with the plurality of terminals;
- the stator bar including a side interface electrically interfacing with each coil of the plurality of coils, the side interface between the first axial end and the second axial end.
2 more elements
An electric motor comprising:
- a rotor configured to rotate on an axis to generate a mechanical output, the rotor comprising a rotor body and a permanent magnet array;
- a stator spaced radially relative to the rotor and disposed about the rotational axis, the stator comprising a plurality of coils arrayed along the axis;
- and
- a stator bar extending along the axis and including a plurality of terminals, the stator bar electrically connecting the plurality of coils with the plurality of terminals, the stator bar comprising:
- a base;
- and
- a hub formed separately from the base and supported by the base, wherein the plurality of terminals extend from the hub, and wherein the side interface is formed on the hub;
- wherein the hub is fixed axially relative to the base by a mounting tab formed on one of the hub and the base interfacing with a mounting slot formed on the other one of the hub and the base.
5 more elements
An electric motor comprising:
- a rotor configured to rotate on an axis to generate a mechanical output, the rotor comprising a rotor body and a permanent magnet array;
- a stator spaced radially relative to the rotor and disposed about the rotational axis, the stator comprising a plurality of coils arrayed along the axis;
- an axle disposed within the stator;
- and
- a stator bar extending along the axis and within the axle, the stator bar including a plurality of terminals, the stator bar electrically connecting the plurality of coils with the plurality of terminals;
- wherein an axle body of the axle includes a plurality of ligaments extending axially and a plurality of windows disposed circumferentially between the plurality of ligaments, wherein the coils extend through a first window of the plurality of windows to electrically connect with the stator bar.
3 more elements
An electric motor comprising:
- a rotor configured to rotate on an axis to generate a mechanical output, the rotor comprising a rotor body and a permanent magnet array;
- a stator spaced radially relative to the rotor and disposed about the rotational axis, the stator comprising a plurality of coils arrayed along the axis;
- and
- a stator bar disposed within the axle, the stator bar including a stator fill channel extending through the stator bar between an inlet port and an outlet port;
- wherein potting compound that embeds the stator at least partially fills the stator fill channel.
2 more elements
An electric motor comprising:
- a rotor configured to rotate on a rotor axis to generate a mechanical output, the rotor comprising a rotor body and a permanent magnet array, wherein the rotor body comprises:
- a rotor housing having a first axial end and a second axial end;
- a fill port formed at the second axial end;
- a rotor fill channel extending axially within the rotor housing from the fill port;
- and
- a discharge port in fluid communication with the rotor fill channel and oriented radially, the discharge port open on a surface of the rotor housing supporting the permanent magnet array;
- and
- a stator spaced radially relative to the rotor and disposed about the rotational axis.
5 more elements
Dependencies are inferred from the claim text.