US 2023/0054909 A1Published application

Torque tunnel halbach array electric machine

AssigneeLinear Labs, Inc.

InventorsFred E. Hunstable, Michael Van Steenburg, Andrei V. Popov

Life of this patent

Estimating the term…

Loading patent…

Abstract

Disclosed are various embodiments for Torque Tunnel Halbach Array electric machines having a rotor comprising a plurality of rotor assemblies configured to form a magnetic torque tunnel having at least a first magnetic pole tunnel segment and a second magnetic pole tunnel segment, each of the rotor assemblies having a plurality of flux shaping Halbach Arrays configured to focus the Flux Density Distribution in the magnetic torque tunnel and a stator having a plurality of coils configured to form a coil winding assembly, the coil winding assembly positioned within the magnetic torque tunnel, such that at least one of the plurality of coils is surrounded by the first magnetic pole tunnel segment or the second magnetic pole tunnel segment, alternatively the rotor may be the coil winding assembly and the stator may be the magnetic torque tunnel.

Claims20

Dependent claims

A system for an electric motor comprising:

a stator comprising a set of coil assemblies arranged radially about a motor axis and defining:
an inner radial facet;
an outer radial facet;
a first axial facet;
and
a second axial facet opposite the first axial facet;
a rotor comprising:
a set of inner radial magnetic elements arranged in a radial pattern about the inner radial facet of the stator and defining a first flux density distribution focused toward the inner radial facet;
a set of outer radial magnetic elements arranged in a radial pattern about the outer radial facet of the stator and defining a second flux density distribution focused toward the outer radial facet;
a first set of axial magnetic elements arranged in a radial pattern about the first axial facet of the stator and defining a third flux density distribution focused toward the first axial facet;
a second set of axial magnetic elements arranged in a radial pattern about the second axial facet of the stator and defining a fourth flux density distribution focused toward the second axial facet;
and
a housing:
coupled to the rotor;
and
comprising a shaft coaxial with the motor axis;
and
a controller configured to drive current through the set of coil assemblies to generate a toroidal magnetic field tunnel configured to sequentially and magnetically couple the set of inner radial magnetic elements, the set of outer radial magnetic elements, the first set of axial magnetic elements, and the second set of axial magnetic elements.

15 more elements

A system for an electric motor comprising:

a set of coil assemblies:
arranged radial about a motor axis;
defining an inner radial facet, an outer radial facet, a first axial facet, and a second axial facet opposite the first axial facet;
and
each coil assembly in the set of coil assemblies comprising a receiving slot;
a magnetic tunnel encompassing the set of coil assemblies:
comprising:
a set of inner radial magnetic elements arranged in a radial pattern about the inner radial facet of the set of coil assemblies;
a set of outer radial magnetic elements arranged in a radial pattern about the outer radial facet of the set of coil assemblies;
a first set of axial magnetic elements arranged in a radial pattern about the first axial facet of the set of coil assemblies;
and
a second set of axial magnetic elements arranged in a radial pattern about the second axial facet of the set of coil assemblies;
and
configured to generate a flux density distribution focused toward the set of coil assemblies;
and
a housing:
containing the set of coil assemblies and the magnetic tunnel;
comprising a set of latching members coupled to the receiving slot of each coil assembly, in the set of coil assemblies;
and
comprising a shaft coaxial with the motor axis.

17 more elements

A system for an electric motor comprising:

a set of coil assemblies:
arranged radial about a motor axis;
defining an inner radial facet, an outer radial facet, a first axial facet, and a second axial facet opposite the first axial facet;
and
each coil assembly in the set of coil assemblies comprising a receiving slot;
a magnetic tunnel encompassing the set of coil assemblies:
comprising:
a set of inner radial magnetic elements arranged in a first Halbach array configuration about the inner radial facet of the set of coil assemblies;
a set of outer radial magnetic elements arranged in a second Halbach array configuration, in alignment with the first Halbach array configuration, about the outer radial facet of the set of coil assemblies;
configured to generate a flux density distribution focused toward the set of coil assemblies;
and
a housing:
containing the set of coil assemblies and the magnetic tunnel;
comprising a set of latching members coupled to the receiving slot of each coil assembly, in the set of coil assemblies;
and
comprising a shaft coaxial with the motor axis.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/979,615Filed 2 Nov 2022
Priority: 26 Aug 2019
Published: 23 Feb 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

H02K 3/47
Fastening of windings on the stator or rotor structure: air-gap windings, i.e. iron-free windings
H02K 1/02
Details of the magnetic circuit: characterised by the magnetic material
H02K 1/146
Stator cores with salient poles: consisting of a generally annular yoke with salient poles
H02K 1/18
Stationary parts of the magnetic circuit: means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

Family

Application62/891,949Us provisional application · filed 26 Aug 2019
Application62/895,481Us provisional application · filed 3 Sep 2019
Application62/895,498Us provisional application · filed 4 Sep 2019
Application62/902,961Us provisional application · filed 19 Sep 2019
Application62/942,736Us provisional application · filed 2 Dec 2019
Application62/958,213Us provisional application · filed 7 Jan 2020
Application62/989,653Us provisional application · filed 14 Mar 2020
Application17/003,855Continuation · filed 26 Aug 2020
Application17/979,615Continuation
US 11,532,963 B2Related patent
US 11,784,529 B2Related patent
US 2021/0066984 A1Published application
US 2023/0054909 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key