Radial magnetic field stator yoke-free double-rotor disc type permanent magnet synchronous motor

A permanent magnet synchronous motor and magnetic field stator technology, applied in the field of electromechanical, can solve the problems of stator and rotor rubbing, unsatisfactory, bumpy, vibration, etc., and achieves large equivalent electromagnetic diameter, light weight, peak torque high density effect

Inactive Publication Date: 2019-08-13
SHANGHAI FUTIAN ELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] third. The road conditions are different when the car is driving, there will be bumps and vibrations, and the large-diameter axial magnetic field motor has a small air gap between the two disks of the stator and the rotor. There will be a hidden danger that may cause the stator and rotor to rub against each other
[0006] In the prior art, another type uses the radial magnetic field outer rotor permanent magnet motor, which avoids the defects of the axial magnetic field motor, but its own electromagnetic structure is not as good as the peak torque density and efficiency indicators. Unsatisfactory, so it needs to be improved

Method used

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  • Radial magnetic field stator yoke-free double-rotor disc type permanent magnet synchronous motor
  • Radial magnetic field stator yoke-free double-rotor disc type permanent magnet synchronous motor
  • Radial magnetic field stator yoke-free double-rotor disc type permanent magnet synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, the radial magnetic field stator yokeless dual-rotor permanent disk motor provided by the present invention includes a stator core 1, a stator winding 2, an outer rotor core 3, an outer magnet 4, an inner rotor core 5, and an inner magnet 6. The rotor bracket 7, the rotating shaft 8, the front bearing 9, the rear bearing 10, the front end cover 11, the rear end cover 12 and the casing 13, the stator core 1, the outer rotor core 3, and the inner rotor core 5 are all made of silicon steel The outer magnetic steel 4 and the inner magnetic steel 5 are made of rare earth permanent magnet materials, the rotor bracket 7 is made of aluminum alloy or carbon steel, the front end cover 11, the rear end cover 12 and The casing 13 is made of aluminum alloy.

[0024] The stator core 1 is fixed with the front end cover 11 by potting epoxy 15 with the stator winding 2 through the fixed bracket 14; the outer magnetic steel 4 and the inner magnetic steel 6 are...

Embodiment 2

[0026] Such as image 3 As shown, it is an embodiment that combines the above-mentioned embodiment 1 into a double motor. The difference from embodiment 1 is that embodiment 2 is composed of two left and right stators, two outer rotors and two inner rotors; a rotor bracket is used 7 Support and connect the two left and right outer rotors and two inner rotors; the two stator cores 1 are respectively fixed on the front end cover 11 and the rear end cover 12 in the same way as in Embodiment 1; the front end cover 11 and the rear end cover 12 Coolant water channels 16 are opened respectively. All the other are similar to embodiment 1.

Embodiment 3

[0028] Such as Figure 4 As shown, it is another embodiment in which the above-mentioned embodiment 1 is combined into a double motor. The difference from embodiment 2 is that embodiment 3 uses a middle stator bracket 18 to fix two left and right stators 1, and two left and right stators The outer rotor and the two inner rotors are respectively supported by two left and right rotor brackets 7 ; a coolant channel 16 is opened on the middle stator bracket 18 . All the other are similar to embodiment 2.

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Abstract

The invention discloses a radial magnetic field stator yoke-free double-rotor disc type permanent magnet synchronous motor. The motor comprises a stator, an outer rotor, an inner rotor, a rotor support, a rotating shaft, a front bearing, a rear bearing, a front end cover, a rear end cover and a housing. The stator is composed of a stator iron core and a stator winding. The outer rotor is composedof an outer rotor iron core and outer magnetic steel. The inner rotor is composed of an inner rotor iron core and inner magnetic steel. The rotor support is connected with the outer rotor, the inner rotor and the rotating shaft, the rotating shaft is supported by the front bearing and the rear bearing, the front end cover is connected with the stator iron core and the housing and provided with a bearing chamber and a cooling liquid water channel, the rear end cover is connected with the housing and provided with a bearing chamber, and the outer magnetic steel and the inner magnetic steel are permanent magnets. The radial magnetic field stator yoke-free double-rotor permanent magnet disc type motor has the outstanding advantages of high peak torque density, high efficiency, small size, light weight and disc-type thin appearance, and is particularly suitable for being used as an electric vehicle wheel edge driving motor, a hub motor, an integrated generator and the like.

Description

technical field [0001] The invention relates to the electromechanical field, in particular to a radial magnetic field stator yokeless double rotor disc permanent magnet synchronous motor. Background technique [0002] In the case of wheel-side drive, wheel-hub drive and engine integration of new energy vehicles, flat and thin drive motors are required to make space placement feasible. In the prior art, an axial magnetic field disk type permanent magnet motor or a radial magnetic field outer rotor type permanent magnet motor is often used. Axial magnetic field disc motors have various structures, but they all have the following disadvantages that are difficult to overcome: [0003] First. In the axial field motor, there is a large axial magnetic pulling force between the stator and the rotor. When the motor power is large and the radial dimension is large, the radial extension of the rotor is easily bent by the large axial magnetic pulling force, and This axial force can m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/02H02K21/12H02K21/14H02K21/22H02K1/27H02K5/20H02K9/19
CPCH02K16/02H02K21/12H02K21/14H02K21/22H02K1/278H02K1/2786H02K5/20H02K9/19
Inventor 陶骏郁薇英孟凡超陈梓钧蒋涛郁薇君陈馨悦
Owner SHANGHAI FUTIAN ELECTRIC TECH
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