Motor with air cooling structure

Abstract

The invention discloses a motor with an air cooling structure, which comprises a motor stator, a motor rotor, a motor shell and a motor end cover, and further comprises a centrifugal fan arranged in the motor shell and fixedly connected with the motor rotor, and an air inlet hole is formed in the position, corresponding to the centrifugal fan, of the motor end cover; a ventilation opening is formed in the motor shell and used for allowing cooling air generated by the centrifugal fan to pass through, and the ventilation opening corresponds to the end part of the motor stator; the centrifugal fan, the air inlet hole and the ventilation opening form an air cooling structure of the motor, when the centrifugal fan rotates, generated cooling air flows to the end of the motor stator in the radialdirection, makes direct contact with a stator coil and a stator iron core of the motor stator and then flows to the outside through the ventilation opening, and heat generated by the stator iron coreand the stator coil is brought to the outer side of the motor. Therefore, the temperature of the end part of the motor stator is effectively reduced, the electric density of the motor stator part isimproved, the power and torque of the motor are improved, and the cooling effect and performance of the motor can meet the requirements.

Description

technical field [0001] The invention relates to the technical field of motors, and more specifically, to a motor with an air-cooled structure. Background technique [0002] During the working process of the motor, the stator core and the stator coil will generate a large amount of heat. In the prior art, air cooling or water cooling is usually used to dissipate heat from the motor. [0003] For example, for a permanent magnet synchronous motor, an air-cooled structure is used to dissipate heat from the motor. The air-cooled structure in the prior art usually includes an axial fan connected to the rotor of the motor, through which the motor is axially dissipated. [0004] However, this air-cooled structure does not have a good heat dissipation effect on the end of the stator. Actual research has found that the temperature at the end of the stator is the highest. Therefore, this air-cooled structure is difficult to meet the needs of industries that require high power density ...

AI Technical Summary

Problems solved by technology

[0004] However, this air-cooled structure does not have a good heat dissipation effect on the end of the stator. Actual research has found that the temperature at the end of the stator is the highest. Therefore, this air-cooled structure is difficult to meet the needs of industries that require high power density and heat dissipation capabilities, such as the electric vehicle industry and the aerospace industry.

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