Liquid-cooled radiating external rotor motor

Abstract

The invention relates to the technical field of electric motors, in particular to a liquid-cooled radiating external rotor motor which comprises a shell body, a spindle, a rear seat and a front cover; the spindle is sleeved on the front cover; the inner end of the spindle is arranged in the cavity of the shell body; an installation bottom column is provided with a stator iron core; a coil is wound on the stator iron core; a rotary drum is arranged on the inner end of the spindle; a magnet body is arranged on the inner wall of the rotary drum; and the stator iron core is provided with a heat exchange tube. Heat exchange liquid is pumped in from one end of the heat exchange tube; the heat exchange liquid is pumped out from the other end of the heat exchange tube, so as to take out the heat in the stator iron core, so that the radiating effect of the liquid-cooled radiating external rotor motor is greatly improved, the impact of high temperature on the service life of the coil and other parts is reduced, the radiating effect is better, and the service life is long. A fan is adopted to keep pumping out hot air from the cavity of the shell body, and simultaneously air at room temperature is continuously inhaled through an air inlet, so that the radiating effect of the liquid-cooled radiating external rotor motor is further improved.

Description

technical field [0001] The invention relates to the technical field of outer rotor motors, in particular to a liquid-cooled and heat-dissipating outer rotor motor suitable for the driving part of an electric vehicle. Background technique [0002] In the normal operation of the outer rotor motor, the coils that are energized will inevitably generate heat, which is mainly concentrated in the iron core and coils. Due to the outer rotor of the motor, the heat is concentrated inside the motor (that is, the stator core part) and is difficult to dissipate, making the motor Overheating of the internal components will accelerate the aging of the coil, affect the normal operation of the internal components, and shorten the service life. [0003] Chinese Patent Announcement No. CN102104296A discloses a heat dissipation structure of an outer rotor and an outer rotor DC brushless motor. A heat dissipation boss is formed on the inner wall of the stator protection end cover. The plane of t...

AI Technical Summary

Problems solved by technology

The heat dissipation function of this heat dissipation mechanism can only act on the inner wall position of the stator protection end cover, and can only dissipate heat at the end position of the stator, and cannot dissipate heat from the stator core part where the heat is relatively concentrated, resulting in the inside of the motor (that is, the stator iron core). Core part) heat is difficult to dissipate in time, its heat dissipation effect is weak, and heat dissipation efficiency is low

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