Production method of radial and non-tangential magnetic field hybrid permanent-magnet driving motor rotor

Abstract

The invention provides a production method of a radial and non-tangential magnetic field hybrid permanent-magnet driving motor rotor, and belongs to the technical field of electric vehicle motor electrical appliance. A first cuboid groove and a second cuboid groove are formed in a circular rotor punching sheet in a penetrating way, the second cuboid groove is placed in a middle lower end of the first cuboid groove, first rectangular permanent-magnet steel and second rectangular permanent-magnet steel are respectively placed in the first cuboid groove and the second cuboid groove, and adjacentmagnetic poles in a rotor core are asymmetric. The permanent-magnet steel can be expanded by the magnetic poles with relatively long pole-arc coefficients, the air gap field intensity is improved, themotor field intensity can be adjudged by reasonably changing the corresponding pole-arc length with regard to the magnetic poles with relatively short pole-arc coefficients, and the motor permanent-magnet steel is large in utilization rate.

Description

technical field [0001] The invention provides a method for producing a permanent magnet drive motor rotor with radial and non-tangential magnetic fields, and belongs to the technical field of electric vehicle motors and appliances. Background technique [0002] At present, most of the rotors of permanent magnet drive motors used in electric vehicles adopt rotor pole symmetrical structure, such as the existing technology, patent name: permanent magnet rotary motor, patent number: CN 201805288 U, discloses the following technical solutions, including stator, rotor As well as the shaft, the rotor is formed with a plurality of rotor magnetic poles, and each magnetic pole is provided with an arc surface and the first and second inclined sections on both sides of the arc surface. The permanent magnets of the rotor with this structure are evenly distributed, and the manufacture is simple, but this structure is relatively difficult. The problem that high magnetic field strength and ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the rotors of permanent magnet drive motors used in electric vehicles adopt rotor pole symmetrical structure, such as the existing technology, patent name: permanent magnet rotary motor, patent number: CN 201805288 U, discloses the following technical solutions, including stator, rotor As well as the shaft, the rotor is formed with a plurality of rotor magnetic poles, and each magnetic pole is provided with an arc surface and the first and second inclined sections on both sides of the arc surface. The permanent magnets of the rotor with this structure are evenly distributed, and the manufacture is simple, but this structure is relatively difficult. The problem that high magnetic field strength and high material utilization cannot be achieved at the same time leads to low performance of the motor, so its performance needs to be further improved

Images