A permanent magnet brushless DC hub motor for electric vehicles

A permanent magnet brushless DC, in-wheel motor technology, applied in electric vehicles, motors, electric components, etc., can solve the problem of affecting the output performance of the energy conversion efficiency of the motor, the unreasonable relationship between the size of the stator and the rotor, and the design of the cogging structure of the motor stator. It can achieve the effect of high utilization of internal space, high conversion efficiency of motor, and reduction of copper wire consumption.
CN105099111BActive Publication Date: 2017-03-15TAIZHOU JINYU ELECTROMECHANICAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TAIZHOU JINYU ELECTROMECHANICAL
Publication Date
2017-03-15

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Abstract

A permanent-magnet brushless direct-current hub motor having high efficiency and low material loss for an electric vehicle comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a fixed support and a stacked stator steel sheet, the stacked stator steel sheet is formed by laminating a plurality of silicon steel sheets and comprises tooth parts and a tooth groove part, the tooth part comprise tooth ribs and a tooth yoke, the tooth groove part is composed of a semi-closing inner cavity formed between every two tooth parts, a single silicon steel sheet is provided with an automatic-buckling groove, the tooth groove part is of a semi-closing pear-shaped groove structure, a first Hall groove, a second Hall groove and a third Hall groove are arranged on the stacked stator steel sheet, and the stator assembly comprises a rim arranged at the periphery, a magnetic conduction ring and a plurality of magnetic steel sheets. By the permanent-magnet brushless direct-current hub motor, the pole groove ratio is optimized, the performance is improved, the usage of magnetic steel and an enameled wire is reduced, cost is saved, the installation positions of the Hall grooves and the winding mode are optimized, the production efficiency is improved, and the installation accuracy is enhanced.
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Description

technical field

[0001] The present invention relates to the technical field of electric vehicle motors, in particular, the present invention particularly relates to a permanent magnet brushless DC hub motor for electric vehicles. Background technique

[0002] As one of the core components of electric vehicles, the performance of electric vehicle motors directly affects the safety, operability, reliability and service life of electric vehicles. The motor is based on the electromagnetic principle, with the stator and rotor as the core components, converting electrical energy into kinetic energy or mechanical energy, which is mainly output in the form of motor speed and torque.

[0003] The permanent magnet brushless DC motor uses permanent magnet material as the fixed magnetic pole of the motor. The relative position of the magnetic pole and the tooth slot is detected by the Hall element, and the position signal is transmitted to the control device. The control device determin...

Claims

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