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US 2018/0123415 A1Published application
Structures Utilizing a Structured Magnetic Material and Methods for Making
AssigneePersimmon Technologies Corporation
InventorsMartin Hosek, Sripati Sah, Jayaraman Kirshnasamy
Life of this patent
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Abstract
A motor comprises a stator comprising at least one core; a coil wound on the at least one core of the stator; a rotor having a rotor pole and being rotatably mounted relative to the stator; and at least one magnet disposed between the rotor and the stator. The at least one core comprises a composite material defined by iron-containing particles having an alumina layer disposed thereon.
Claims26
A motor, comprising:
- a stator comprising at least one core and an outer wall, the outer wall extending in an axial direction;
- a coil wound on the at least one core of the stator such that an edge of the outer wall extending in the axial direction is below, even with, or extends beyond a surface of the coil facing in the axial direction and such that the outer wall extends radially beyond an outer edge of the coil;
- a rotor having a rotor pole and being rotatably mounted relative to the stator;
- at least one magnet disposed between the rotor and the stator;
- and
- a conical air gap between the stator and the at least one magnet;
- wherein a separation plane normal to an axis of rotation extends through the stator and the rotor, and wherein the coil, the at least one magnet, and the conical air gap are together configured to allow flux flow between the stator and the rotor in a three-dimensional flux pattern such that the flux flow does not cross the separation plane.
4 more elements
A motor, comprising:
- a stator having a first stator portion and a second stator portion, the first stator portion and the second stator portion being assembled to form two triangular cross sections that mate radially at shorter sides of the triangular cross sections, the stator further comprising at least one core and an outer wall, the outer wall extending in an axial direction;
- a coil wound on an inner-facing surface the at least one core such that an edge of the outer wall extending in the axial direction is below, even with, or extends beyond a surface of the coil facing in the axial direction and such that the outer wall extends radially beyond an outer edge of the coil;
- a rotor having a rotor pole and being rotatably mounted relative to the stator;
- at least one magnet disposed between the rotor and the stator;
- and
- a conical air gap between the stator and the at least one magnet;
- wherein a separation plane normal to an axis of rotation extends through the stator and the rotor, and wherein the coil, the at least one magnet, and the conical air gap are together configured to allow flux flow between the stator and the rotor in a three-dimensional flux pattern such that the flux flow does not cross the separation plane.
4 more elements
A motor, comprising:
- a stator assembly comprising first stator portion assembled with a second stator portion, the first stator portion and the second stator portion being assembled such that the first stator portion has an upwardly and inward facing surface and the second stator portion has a downwardly and inward facing surface, the upwardly and inward facing surface and the downwardly and inward facing surface facing away from each other and defining a stator pole;
- at least one core disposed on the stator pole;
- an outer wall on outwardly facing surfaces of the stator assembly, the outer wall extending in an axial direction;
- a coil wound on the at least one core such that an edge of the outer wall extending in the axial direction is below, even with, or extends beyond a surface of the coil facing in the axial direction and such that the outer wall extends radially beyond an outer edge of the coil;
- a rotor having a rotor pole and being rotatably mounted relative to the stator assembly;
- at least one magnet disposed between the rotor and the stator assembly;
- and
- a conical air gap between the stator assembly and the at least one magnet;
- wherein a separation plane normal to an axis of rotation extends through the stator assembly and the rotor, and wherein the coil, the at least one magnet, and the conical air gap are together configured to allow flux flow between the stator assembly and the rotor in a three-dimensional flux pattern such that the flux flow does not cross the separation plane.
6 more elements
Dependencies are inferred from the claim text.