Brushless electromagnetic and double-radial permanent magnet hybrid excitation driving motor

Abstract

The invention discloses a brushless electromagnetic and double-radial permanent magnet hybrid excitation driving motor, comprising a rotor core, an enclosure, a front end cover, a rear end cover and ashaft. The rotor core comprises a V-shaped first magnet, a second magnet and an electric excitation winding; the V-shaped first magnet has the magnetism gathering capability; the second magnet can avoid the permanent magnet material waste problem due to a combined structure while improving per-pole air gap magnetic field distribution and strength; the electric excitation winding can adjust the size of an air gap magnetic field; the fact that permanent magnet steel does not lose magnetism can be ensured; the magnetic field strength is high; and the output power is high.

Description

technical field [0001] The invention relates to the technical field of motors and appliances for electric vehicles, and more specifically, the invention relates to a brushless electromagnetic and dual radial permanent magnet hybrid excitation drive motor. Background technique [0002] At present, the rotors of permanent magnet drive motors used in electric vehicles mostly adopt multiple combined radial permanent magnet structures, such as the existing technology, patent name: electric vehicle built-in dual radial permanent magnet steel synthetic magnetic field drive motor, patent number: 201710310325652.0, The following technical scheme is disclosed, each pole includes two groups of radial permanent magnets, and each group of permanent magnets is composed of two pieces of permanent magnet steel, the multi-pole permanent magnets are evenly arranged along the circumferential direction of the rotor and the rotor core is close to the outer edge side, although The magnetic field ...

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Problems solved by technology

[0002] At present, the rotors of permanent magnet drive motors used in electric vehicles mostly adopt multiple combined radial permanent magnet structures, such as the existing technology, patent name: electric vehicle built-in dual radial permanent magnet steel synthetic magnetic field drive motor, patent number: 201710310325652.0, The following technical scheme is disclosed, each pole includes two groups of radial permanent magnets, and each group of permanent magnets is composed of two pieces of permanent magnet steel, the multi-pole permanent magnets are evenly arranged along the circumferential direction of the rotor and the rotor core is close to the outer edge side, although The magnetic field strength of the motor is improved, but it also leads to waste of permanent magnet steel materials, increases the cost of the motor, and reduces the cost performance of the motor. Therefore, it is of great significance to invent a motor rotor structure that improves the cost performance of the motor

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