Brake force control system for a vehicle

The brake force control system optimally distributes regenerative and friction braking forces to prevent brake dive by using predictive algorithms and sensor feedback, ensuring vehicle stability and minimizing ECS operation.

DE102019107305B4Active Publication Date: 2026-06-03HYUNDAI MOTOR CO LTD +1
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
HYUNDAI MOTOR CO LTD
Filing Date
2019-03-21
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing brake force control systems in electric and hybrid vehicles fail to effectively distribute regenerative and friction braking forces to prevent brake dive, a phenomenon where the vehicle's front end dips due to weight transfer during braking, especially when the motor is located at the front wheels.

Method used

A brake force control system that dynamically distributes braking forces between regenerative and friction braking based on predictive algorithms, using sensors to detect brake dive and adjust damping forces to minimize electronically controlled suspension (ECS) operation, incorporating front and rear wheel-specific braking devices.

Benefits of technology

Prevents brake dive by optimizing braking force distribution, maintaining vehicle stability and reducing excessive ECS operation, thereby enhancing safety and ride comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

Brake force control system for a vehicle, comprising: a braking system (10) configured to apply a friction braking force by means of a friction braking device (11) and a regenerative braking force by means of an electric motor (12), wherein the braking system (10) has a front wheel friction brake device (11a) provided on a front wheel to apply a front wheel friction braking force to the front wheel, and a rear wheel friction brake device (11b) provided on a rear wheel to apply a rear wheel friction braking force to the rear wheel, wherein the electric motor (12) is connected to and driven by the front wheel or the rear wheel or performs regenerative power generation to apply a regenerative braking force to the front wheel or the rear wheel; a brake force calculation unit (20) configured to achieve a required braking force while a brake pedal (21) is pressed; a brake force distribution unit (30) configured such that, when the required braking force is entered, it compares the required braking force with the regenerative braking force, and configured such that it distributes a braking force such that braking is performed with the regenerative braking force when the required braking force is less than the regenerative braking force, and braking is performed with the regenerative braking force and the friction braking force when the required braking force is greater than the regenerative braking force, and a brake dive detection unit (40) configured to detect whether a brake dive phenomenon occurs when braking is performed, and configured to transmit a brake dive signal to the brake force distribution unit (30) when the brake dive phenomenon occurs, characterized by the fact that, If the brake dip signal is entered in a state in which the required braking force is less than the regenerative braking force, the brake force distribution unit (30) distributes the braking force in such a way that the regenerative braking force is reduced and the vehicle is braked by the rear wheel friction braking force.
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