Drive-brake integrated hub system of a multi-axle vehicle and temperature monitoring method thereof

By integrating a nested coaxial dual-rotor composite motor with an electromechanical braking unit, the mechanical coupling risk and excessive temperature rise problem of multi-axle vehicle drive and braking systems are solved, enabling real-time and accurate temperature monitoring and prediction, and improving transmission efficiency and vehicle handling performance.

CN122126235APending Publication Date: 2026-06-02NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Filing Date
2026-04-08
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing multi-axle vehicle drive and braking systems suffer from mechanical coupling risks, low transmission efficiency, and excessive temperature rise due to multiple heat sources coupled in a confined space. Furthermore, they lack real-time and accurate temperature monitoring and prediction.

Method used

The integrated drive and braking hub system adopts a nested coaxial dual-rotor composite motor and an electromechanical braking unit. By integrating the nested coaxial dual-rotor composite motor and the electromechanical braking unit, and combining a multi-physics loss database and a high-order equivalent thermal network model for temperature monitoring, real-time and accurate temperature monitoring and prediction are achieved.

Benefits of technology

It achieves seamless switching between driving and braking, improves transmission efficiency and vehicle handling performance, reduces failure rate and temperature rise risk, ensures safety and energy utilization, and provides precise temperature status input for thermal management.

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Abstract

This invention discloses an integrated drive and braking hub system for multi-axle vehicles and its temperature monitoring method, comprising: a wheel unit, a nested coaxial dual-rotor composite motor, a motor controller, and an electromechanical braking unit; the motor controller receives control signals sent by the on-board control unit and controls the magnitude and direction of the current output of the nested coaxial dual-rotor composite motor; the electromechanical braking unit transmits the braking torque output by the nested coaxial dual-rotor composite motor and amplifies it into a braking clamping force, thereby generating braking torque on the brake disc to achieve vehicle braking; this invention can determine the current operating condition based on the working mode of the nested coaxial dual-rotor composite motor, and independently and collaboratively control the torque of the outer rotor and inner rotor through the same motor controller, achieving optimal powertrain matching under various scenarios, ensuring stability, comfort, and energy economy under extreme conditions.
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