Stator structure with heat dissipation module having smooth arc curved surface and condition bridge in gap in heat dissipation module

Patent metadata

Field	Value
Publication number	US-12418219-B2
Application number	US-202217921006-A
Country	US
Kind code	B2
Filing date	Jun 30, 2022
Priority date	Nov 18, 2021
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

A stator structure of a magnetic levitation flux-switching motor includes a stator of a modular structure and a motor housing. A modular stator includes front and rear side winding end heat dissipation modules, modular stator left and right wings, a modular stator permanent magnet, front side magnetic conduction column left and right wings, an inter-front side and inter-rear side magnetic conduction column permanent magnets, insulating layers, a stator winding, and rear side magnetic conduction column right and left wings. The front side and rear side winding end heat dissipation modules are of hollow structures, and are symmetrically provided with a cooling medium inlet and a cooling medium outlet, a cooling medium channel is disposed inside a hollow cavity, one side of the heat dissipation module is a smooth curved surface, and good thermal contact can be achieved between the heat dissipation module and the stator winding and the insulating layer.

First claim

What is claimed is:

1. A stator structure of a magnetic levitation flux-switching motor, comprising modular iron core structures each comprising a modular stator left wing, a modular stator permanent magnet and a modular stator right wing, wherein the stator structure further comprises: front side winding end heat dissipation modules and rear side winding end heat dissipation modules, an axial front side of the front side winding end heat dissipation module being a smooth arc curved surface in close contact with one end of a stator winding, an axial rear side of the front side winding end heat dissipation module being in close contact with an axial front side of the modular iron core structure, an axial front side of the rear side winding end heat dissipation module being in close contact with an axial rear side of the modular iron core structure, and an axial rear side of the rear side winding end heat dissipation module being a smooth arc curved surface in close contact with the other end of the stator winding,
wherein when the stator structure further comprises a radial magnetic conduction bridge of a front side magnetic pole bypass and a radial magnetic conduction bridge of a rear side magnetic pole bypass, a slot for the radial magnetic conduction bridge of the front side magnetic pole bypass to be embedded in is reserved in the axial rear side of the front side winding end heat dissipation module, the radial magnetic conduction bridge of the front side magnetic pole bypass is in close contact with the modular iron core structure after being embedded in the front side winding end heat dissipation module, a slot for the radial magnetic conduction bridge of the rear side magnetic pole bypass to be embedded in is reserved in the axial front side of the rear side winding end heat dissipation module, and the radial magnetic conduction bridge of the rear side magnetic pole bypass is in close contact with the modular iron core structure after being embedded in the rear side winding end heat dissipation module.

2. The stator structure of a magnetic levitation flux-switching motor according to claim 1 , wherein the smooth arc curved surface is an elliptical curve, and the major axis of the elliptical curve is equal to the tooth width of the stator structure.

3. The stator structure of a magnetic levitation flux-switching motor according to claim 1 , wherein an insulating layer is disposed between the smooth arc curved surface of the front side winding end heat dissipation module and the stator winding, and an insulating layer is disposed between the smooth arc curved surface of the rear side winding end heat dissipation module and the stator winding.

4. The stator structure of a magnetic levitation flux-switching motor according to claim 1 , wherein the front side winding end heat dissipation module and the rear side winding end heat dissipation module are both of hollow structures having cooling medium channels and are both provided with a cooling medium inlet and a cooling medium outlet.

5. The stator structure of a magnetic levitation flux-switching motor according to claim 4 , wherein the modular stator left wing of the stator structure is provided with a groove for splicing other stator structures in the circumferential direction, and the modular stator right wing of the stator structure is integrally formed with a protrusion for splicing other stator structures in the circumferential direction.

Assignees

• Univ Southeast

Inventors

• Hua Wei
• Zhang Zhiheng
• Yu Wenfei
• Wang Peixin

Classifications

• H02N15/00

  Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for (electric or magnetic devices for holding work on machine tools B23Q3/15 {; monorail vehicle propulsion or suspension B60L13/00}; sliding or levitation devices for railway systems B61B13/08; material handling devices associated with conveyors incorporating devices with electrostatic or magnetic grippers B65G47/92; separating thin or filamentary articles from piles using magnetic force B65H3/16; delivering thin or filamentary articles from magnetic holders by air blast or suction B65H29/24; bearings using magnetic or electric supporting means F16C32/04; relieving bearing loads using magnetic means F16C39/06; magnets H01F7/00; dynamo-electric clutches or brakes H02K49/00 {; electric furnaces with simultaneous levitation and heating H05B6/32}) · CPC title

• H02K5/04

  Casings or enclosures characterised by the shape, form or construction thereof · CPC title

• H02K1/20 Primary

  with channels or ducts for flow of cooling medium · CPC title

• H02K9/227

  Heat sinks · CPC title

• H02K9/197

  in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator · CPC title