Stator-rotor assembly and axial field motor

Abstract

The invention discloses a stator and rotor assembly and an axial magnetic field motor, belonging to the field of motors. The stator-rotor assembly includes a rotor assembly, a front stator assembly and a rear stator assembly. The rotor assembly includes a rotor disk, on which a plurality of magnetic steel assemblies are arranged, and each magnetic steel assembly includes an inner magnetic steel arranged on the inner side of the rotor disk and an outer magnetic steel arranged on the outer side of the rotor disk, and the inner magnetic steel assembly of the same magnetic steel assembly The magnetic pole directions of the magnetic steel and the outer magnetic steel are opposite; both the front stator assembly and the rear stator assembly include a plurality of stator units arranged in a ring, and the stator unit includes a U-shaped magnetic core, and the inner end face of the U-shaped magnetic core is aligned with the inner magnetic steel The outer end face of the U-shaped magnetic core is aligned with the annular ring of the outer magnetic steel, and a coil winding is arranged on the U-shaped magnetic core. The invention reduces the weight and iron loss of the yoke of the stator; reduces the weight of the rotor and the moment of inertia of the rotor; can greatly shorten the axial dimension of the motor; it is easier to make chute fit and reduce torque ripple.

Description

technical field [0001] The invention relates to the field of motors, in particular to a stator-rotor assembly and an axial magnetic field motor. Background technique [0002] Axial field motors, also known as axial flux motors or disk motors, have a stator assembly and a rotor assembly of a disk structure. The air gap of the axial field motor is planar, and the air gap magnetic field is axial, which has the advantages of compact structure, small volume, light weight, high torque density, and small rotor moment of inertia. [0003] Axial field motors usually have the following structures: 1. Single rotor and single stator: a stator assembly and a rotor assembly (single-sided air gap); 2. Double rotor single stator: two rotor assemblies, a middle stator assembly ( Double-sided air gap); 3. Single-rotor double-stator: two stator assemblies, one rotor assembly in the middle (double-sided air gap); 4. Multi-rotor multi-stator: multiple stator assemblies and multiple rotor assemb...

AI Technical Summary

Problems solved by technology

However, this patent is an axial field motor with a double rotor and a single stator, and is not suitable for an axial field motor with a single rotor and a double stator.

Moreover, the rotor yoke of this patent participates in magnetic conduction, which cannot further reduce weight and eliminate iron loss, and is not suitable for axial field motors with single rotor and double stators without rotor yoke.

[0007] From the above, it can be known that for a single-rotor double-stator axial field motor with no rotor yoke, how to reduce the iron loss and weight of the stator yoke, there is no technical solution in the prior art

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