电子助力失效后集成式电液制动系统跨系统备份研究  

Research on Cross-System Backup for Integrated Electro-Hydraulic Braking Systems After Electronic Boost Failure

作　　者：田博士 李亮[1] 石家贤 李大为 卓坤 屈文英 Tian Boshi;Li Liang;Shi Jiaxian;Li Dawei;Zhuo Kun;Qu Wenying(School of Vehicle and Mobility,Tsinghua University,Beijing 100084;Automotive Engineering Research Institute,BYD Auto Industry Company Limited,Shenzhen 518118)

机构地区：[1]清华大学车辆与运载学院,北京100084 [2]比亚迪汽车工业有限公司汽车工程研究院,深圳518118

出　　处：《汽车工程》2025年第3期519-528,共10页Automotive Engineering

基　　金：国家重点研发计划项目(2023YFB2504500)资助。

摘　　要：线控制动系统已经逐渐取代传统真空助力器方案,成为新能源汽车制动领域的主导技术。其中,集成式电液制动系统作为线控制动的一种形式,当其电液制动模块发生故障时,驾驶员制动意图主要依靠基础液压制动和电机回馈制动来完成。这两种制动方式所能提供的制动能力相对有限,难以达到驾驶员期望的减速效果,这在一定程度上增加了交通事故的发生风险。为了全面提升车辆的行车安全性能,本文将电子驻车制动系统(EPB)纳入行车制动执行的一环。在集成式电液制动系统助力功能失效情况下,智能制动系统能够根据驾驶员请求的减速度,通过整车网络通信,发出制动力或制动减速度请求信号。这一过程将协调电机回馈制动和EPB制动,共同作用以增强车辆的减速性能,从而显著提升制动效率。此外,通过对EPB实施多级控制策略,能够满足不同程度减速度需求,不仅优化了驾乘体验,提高了舒适性,而且还有效降低了交通事故发生概率。The wire-controlled braking system has gradually replaced the traditional vacuum booster solution and has become the leading technology in the braking field of new energy vehicles.Among them,the integrated Electro-Hydraulic Braking(EHB)system,as a form of wire-controlled braking,relies mainly on basic hydraulic braking and motor regenerative braking to fulfill the driver's braking intention when its EHB module fails.These two braking methods can provide relatively limited braking power,which is difficult to achieve the deceleration effect expected by the driver,to some extent increasing the risk of traffic accidents.In order to comprehensively enhance the driving safety performance of the vehicle,in this paper the Electronic Parking Brake(EPB)system is incorporated as one of the executing mechanisms for driving brakes.When the power assist function of the integrated EHB system fails,the intelligent braking system can,based on the deceleration requested by the driver,send a braking force or deceleration request signal through the vehicle network communication.This process coordinates the motor regenerative braking and EPB braking to work together to enhance the vehicle's deceleration performance,thereby significantly improving braking efficiency.In addition,by implementing multi-level control strategies for the EPB system,the system can meet the needs for different levels of deceleration,which not only optimizes the driving experience and improves comfort but also effectively reduces the probability of traffic accidents.

关 键 词：线控制动 助力失效 电机回馈 电子驻车制动 异构备份 制动效能 

分 类 号：U463.5[机械工程—车辆工程]