Vehicle brake control method, system, vehicle, and electronic device

By sending braking trigger signals directly to the motor controller through the brake controller, electromagnetic braking force and friction braking force are distributed synchronously, which solves the problem of delayed intervention of electromagnetic braking force during the braking process of electric vehicles, realizes synchronous response of electromagnetic braking and friction braking, and improves braking smoothness and stability.

CN122211196APending Publication Date: 2026-06-16CHONGQING CHANGAN AUTOMOBILE CO LTD
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Patent Information

Application Number
CN202610538050.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-22
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

During the braking process of electric vehicles, the electromagnetic braking force intervenes late and the friction braking force responds asynchronously, resulting in uneven braking and affecting the driving experience and braking stability.

Method used

The brake controller sends a brake trigger signal directly to the motor controller. Based on the vehicle status information, the upper limit of the rated electromagnetic braking force of the motor controller, and the preset charging power of the battery, it synchronously allocates the target electromagnetic braking force and friction braking force requirements, so as to realize the synchronous triggering and response of electromagnetic braking and friction braking, and avoid the lag caused by the secondary allocation by the vehicle controller.

Benefits of technology

Without affecting the response rate of friction braking force, the response speed of electromagnetic braking force is improved, the smoothness and stability of vehicle braking process are enhanced, regenerative braking energy is prioritized, and braking safety and energy recovery efficiency are guaranteed.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a vehicle braking control method, system, vehicle, and electronic equipment, relating to the field of vehicle braking technology, to solve the problem of uneven vehicle braking caused by delayed intervention of electromagnetic braking force and asynchronous response with friction braking force. The method includes: in response to detecting that the brake pedal opening is greater than a braking trigger threshold, sending a braking trigger signal to a motor controller; the motor controller executing a braking operation according to the control command of the brake controller; determining the target electromagnetic braking force requirement and the target friction braking force requirement based on the rated electromagnetic braking force limit of the motor controller, the preset charging power of the battery, and the total braking force requirement; generating a first control command based on the target electromagnetic braking force requirement and sending it to the motor controller to cause the motor controlled by the motor controller to execute a corresponding electromagnetic braking response; and generating a second control command based on the target friction braking force requirement to control the braking actuator controlled by the brake controller to execute a corresponding friction braking response.
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