Multi-stage stator and rotor combined motor

Abstract

The invention discloses a multi-stage stator / rotor combined motor, comprising at least two sub motors, wherein each sub motor is provided with a stator and a rotor which are independent from each other; at least one sub motor is provided with a sub speed reducer used for outputting the power of the corresponding rotor; the output ends of all the sub motors are in transmission connection and output power; each stage of sub motor of the motor can have an independent reduction ratio and through output matching, the motor can obtain relatively high working efficiency both in a large range of revolving speed and in a large range of torque; therefore, the motor is compact in structure and can realize relatively high power density.

Description

technical field

[0001] The invention relates to the field of motors, in particular to a multi-stage stator-rotor combined motor. Background technique

[0002] As we all know, rotary motors include a stator and a rotor, and the use of high-speed motors is one of the effective ways to increase the power density of the motor, because increasing the speed can increase the electromagnetic interaction range of the rotary motor stator and rotor per unit time. The output speed of the motor is often not so high. For example, the motor used for electric wheels of automobiles has a maximum wheel speed of about 1000 (rev / min). If a high-speed motor is used, a deceleration device needs to be added. Therefore, on the one hand, high-speed and low-torque is used to ensure the required power and realize small size and light weight; Combined and integrated in the motor. Due to the difference in the properties of the electromagnetic material of the motor and the mechanical properties of the ...

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