A continuously variable transmission device based on a brushless dual-mechanical-port motor

By designing a continuously variable transmission device for a brushless dual mechanical port motor, a four-layer sandwich structure consisting of an outer stator, an outer rotor, an inner rotor, and an inner stator is adopted. The mechanical ports are integrated using synchronous and asynchronous principles, solving the problems of low power factor and easy saturation in existing technologies. This achieves brushless operation and stepless speed change, and improves torque density and overload capacity.

CN116317420BActive Publication Date: 2026-06-12WUHAN DALUO TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN DALUO TECH CO LTD
Filing Date
2023-02-23
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

The power factor of the transmission device in existing dual mechanical port motors is low and it is prone to saturation, and the brushless structure has defects.

Method used

The continuously variable transmission (CVT) device, which adopts a brushless dual mechanical port motor, is designed as a four-layer sandwich structure consisting of an outer stator, an outer rotor, an inner rotor, and an inner stator. It integrates mechanical ports using synchronous and asynchronous principles and achieves brushless operation and stepless speed change through electromagnetic isolation. It features high torque density and power factor, as well as strong overload capacity.

Benefits of technology

It achieves brushless operation and continuously variable transmission, improves torque density and overload capacity, avoids the use of magnetic field modulation mechanism, and enhances system performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to a stepless speed changer device based on a brushless double mechanical port motor, which comprises, in sequence from outside to inside along the radial direction, an outer stator, an outer rotor, an inner rotor and an inner stator; the inner part of the outer stator is provided with an outer stator winding, the inner stator is provided with an inner stator winding, and the inner rotor is provided with a self short-circuit winding; the surface of the air gap side of the outer rotor and the outer stator is provided with a first permanent magnet, the surface of the air gap side of the outer rotor and the inner rotor is provided with a second permanent magnet, and the surface of the air gap side of the inner rotor and the inner stator is provided with a third permanent magnet; wherein the outer stator winding and the first permanent magnet have the same pole pair number; the inner stator winding and the third permanent magnet have the same pole pair number; and the second permanent magnet and the self short-circuit winding have the same pole pair number. The application integrates corresponding mechanical ports through electromagnetic isolation by an asynchronous double mechanical port unit and two single electrical port units, can realize stepless speed changing without using a magnetic field modulation mechanism, has high torque density and power factor, and has strong overload capacity.
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