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Permanent magnet brushless DC (direct current) motor

A permanent magnet brushless DC and magnetic steel technology, applied in the field of electric motors, can solve the problems of complicated installation of rotor magnetic steel, increased production cost, low production efficiency, etc. Effects of small phase currents

Active Publication Date: 2012-02-29
ZHEJIANG ACTIVETECH COMP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing rotors are usually punched out and then laminated. The production of motors with this structure leads to increased production costs, and the installation of rotor magnets is very complicated, resulting in low production efficiency.

Method used

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  • Permanent magnet brushless DC (direct current) motor
  • Permanent magnet brushless DC (direct current) motor
  • Permanent magnet brushless DC (direct current) motor

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0020] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the permanent magnet brushless DC motor includes a front end cover 101, a rear end cover 112, a casing 105, a stator, a rotor, and a Hall sensor element circuit board 115, wherein the casing 105, the front end cover 101, and the rear end cover 112 constitutes as the supporting point of the whole motor. The stator core 106 is housed in the casing 105 . Wherein, the rotor includes a rotor shaft 102, a rotor yoke 108, a magnetic steel 107, a magnetic steel baffle 110, and a magnetic steel partition 109. In the embodiment of the present invention, the rotor yoke 108 does not have a rotor punch, which can be directly made of Low-carbon steel (such as 20 round steel, A3 steel, etc.), the magnetic steel 107 is fixed on the outer circumference of the rotor yoke 108 and blocked by the magnetic steel baffles 110 ...

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PUM

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Abstract

The invention discloses a permanent magnet brushless DC (direct current) motor which comprises a front end cover, a rear end cover, an enclosure, a stator, a rotor and a Hall element sensor circuit board, wherein the rotor comprises a rotor shaft, a rotor yoke, magnetic steels, magnetic steel baffles and magnetic steel clapboards; the rotor yoke is not provided with a rotor sheet; the magnetic steels are fixed on the outer periphery of the rotor yoke and are shielded by the magnetic steel baffles positioned at both ends of the rotor yoke; and the magnetic clapboards are arranged between the magnetic steels with different magnetic poles. In the invention, the rotor is not provided with the rotor sheet, so that the rotor has a more reasonable structure and the rotor sheet does not need to be formed in the machining process, and thus, the permanent magnet brushless DC motor is convenient to process, is simple to assemble and is firmer to fix the magnetic steels.

Description

technical field [0001] The present invention relates generally to electric motor technology, and more particularly to a permanent magnet brushless DC motor suitable for use in electric trucks. Background technique [0002] The permanent magnet brushless DC motor industry is developed from micro motors. Existing rotors are usually punched out and then laminated. The production of motors with this structure will increase the production cost, and the installation of the rotor magnetic steel is very complicated, resulting in low production efficiency. Contents of the invention [0003] In view of the above technical problems, the present invention provides a permanent magnet brushless DC motor suitable for electric trucks. [0004] The invention provides a permanent magnet brushless DC motor, which includes a front end cover, a rear end cover, a casing, a stator, a rotor, and a Hall element sensor circuit board, wherein the rotor includes a rotor shaft, a rotor yoke, a magnet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/08H02K1/27H02K1/28H02K1/14
Inventor 应忠良
Owner ZHEJIANG ACTIVETECH COMP TECH CO LTD
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