The invention provides an electric automobile electro-hydraulic composite braking control method and system and an electric automobile. The method comprises the steps that braking signals of the automobile are obtained, and the braking signals are divided into different braking working conditions according to the braking strength; distributing braking force according to a braking working condition corresponding to the braking signal to obtain a front axle braking control signal and a rear axle braking control signal; acquiring motor working condition information and battery working condition information; and according to the front axle braking control signal, the braking signal, the motor working condition and the battery working condition information, a front axle regenerative braking control signal and a front axle hydraulic braking control signal are obtained. In the electro-hydraulic composite braking process, staged control over braking force distribution is achieved, regenerative braking of the motor is fully utilized, and the recovery efficiency of battery energy can be improved on the premise that it is guaranteed that the vehicle has enough braking efficiency.
本发明提供一种电动汽车电液复合制动控制方法、系统及电动汽车,该方法包括:获取车辆的制动信号,并按照制动强度的大小将制动信号分为不同的制动工况;根据制动信号所对应的制动工况分配制动力,得到前轴制动控制信号和后轴制动控制信号;获取电机工况和电池工况信息;根据所述前轴制动控制信号、制动信号、电机工况和电池工况信息,得到前轴再生制动控制信号和前轴液压制动控制信号。本发明在电液复合制动过程中,对制动力分配实现分阶段控制,充分利用电机的再生制动,能够在保证车辆拥有足够的制动效能的前提下,提高电池能量的回收效率。
Electric vehicle electro-hydraulic composite braking control method and system and electric vehicle
电动汽车电液复合制动控制方法、系统及电动汽车
20.12.2022
Patent
Elektronische Ressource
Chinesisch
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