Double V-type permanent magnet hub motor magnetic circuit structure

A technology of in-wheel motor and permanent magnet, which is applied in the field of magnetic circuit structure of double V-type permanent magnet in-wheel motor, can solve the problems of less research and application, and achieve the effects of enhanced heat dissipation, easy control of pole arc coefficient, and low noise performance.

Inactive Publication Date: 2019-05-31
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Permanent magnet drive motors with magnetic steel embedded structures mostly appear on conventional inner rotor motors, and there are few researches and applications on hub motors with outer rotor structures

Method used

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  • Double V-type permanent magnet hub motor magnetic circuit structure

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Embodiment 1

[0022] Such as figure 1 As shown, this embodiment provides a double V-shaped permanent magnet hub motor magnetic circuit structure, including a stator 1, a rotor 2, a rotor shaft 3, a winding slot 5 and a permanent magnet 7; the rotor 2 is arranged inside the stator 1 And the rotor 2 is arranged coaxially with the stator 1, the rotor shaft 3 is arranged at the center of the rotor 2, the winding slot 5 is arranged on the inner wall of the stator 1, and the permanent magnet 7 set on the rotor 2.

[0023] In this specific embodiment, the outer wall of the rotor 2 is provided with a plurality of rotor teeth. Each of the rotor teeth is provided with two permanent magnets 7 . The two permanent magnets 7 arranged on each rotor tooth are distributed in a V shape. It also includes a magnetic isolation bridge 4, and the magnetic isolation bridge 4 is arranged at the root of the rotor teeth. The two magnetic isolation bridges 4 provided at the root of each rotor tooth are distributed...

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Abstract

The invention discloses a double V-type permanent magnet hub motor magnetic circuit structure and relates to the technical field of motor structure. The double V-type permanent magnet hub motor magnetic circuit structure comprises a stator, a rotor, a rotor shaft, a permanent magnet, a magnetic isolation bridge, a winding slot and a ventilation hole. The permanent magnet hub motor has good runningcharacteristics. The rotor is an embedded radial rotor and has a low magnetic flux leakage coefficient. No magnetic isolation measures are required on a rotating shaft. A pole-arc coefficient is easyto control. Rotor punching pieces have high mechanical strength. The ventilation hole reduces the magnetic flux at the alignment position. The magnetic circuit structure has low noise performance, reduces the core loss of the rotor, and enhances a heat dissipation effect.

Description

technical field [0001] The invention relates to the technical field of motor structure, in particular to a magnetic circuit structure of a double V-shaped permanent magnet hub motor. Background technique [0002] Permanent magnet in-wheel motors have the advantages of high energy conversion efficiency, good field-weakening speed regulation performance, strong torque output capability and high reliability, and have developed rapidly in the field of new energy vehicles. Permanent magnet drive motors with magnetic steel embedded structures mostly appear on conventional inner rotor motors, and there are less researches and applications on hub motors with outer rotor structures. At present, electric vehicle drive motors are developing in the direction of high power and high torque. The cross-sectional area of ​​the magnetic poles in the embedded V-shaped magnetic circuit structure is much larger than the surface area of ​​the air, which can generate a higher air magnetic flux den...

Claims

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Application Information

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IPC IPC(8): H02K21/14H02K1/16H02K1/27H02K1/32
Inventor 陶大军代旭许传一戈宝军王立坤潘博
Owner HARBIN UNIV OF SCI & TECH
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