The invention relates to the technical field of new energy automobile control, in particular to a new energy automobile sliding energy recovery control method, which comprises the following steps: a vehicle control unit VCU monitors the vehicle slip rate in real time, calculates the vehicle reference speed by using the speed information of four wheels sent by an ABS, and enables the slip rate monitoring when the vehicle is in a sliding working condition; according to the method, the vehicle sliding state is judged by monitoring the speed of each wheel of a driving wheel and the reference vehicle speed, when the calculated vehicle sliding rate R is larger than a threshold value, the sliding anti-lock function is triggered, after the sliding anti-lock function is activated, the VCU can reduce the sliding feedback torque in a linear gradient mode so as to control the sliding rate to be within a reasonable range, vehicle instability is prevented, and the stability of the vehicle is improved. The problem that when the sliding energy recovery torque is set to be large, the vehicle drifts easily when the vehicle runs on the low-attachment road surface is solved, meanwhile, the working condition adaptability and the energy recovery rate of sliding energy recovery are improved, the functional safety of sliding energy recovery is improved, the energy recovery efficiency can be guaranteed, and the driving safety of the whole vehicle can also be guaranteed.

    本发明涉及新能源汽车控制技术领域,具体地说,本发明涉及一种新能源汽车滑行能量回收控制方法,由整车控制单元VCU实时监控整车滑移率,利用ABS发出的四个轮速信息计算整车参考车速,当整车处于滑行工况时使能滑移率监控,通过监控驱动轮的每个轮速和参考车速判断整车滑移状态,当计算的整车滑移率R大于阈值时,触发滑行防抱死功能,滑行防抱死功能激活后,VCU会线性梯度降低滑行回馈扭矩,以控制滑移率在合理范围内,防止车辆失稳,解决了滑行能量回收扭矩设定较大时在低附路面行车时容易造成车辆甩尾的问题,同时提高了滑行能量回收的工况适应性和能量回收率,提升了滑行能量回收的功能安全性,既可以保证能量回收效率,又可以确保整车驾驶安全。


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    Title :

    New energy automobile sliding energy recovery control method


    Additional title:

    一种新能源汽车滑行能量回收控制方法


    Contributors:
    ZHANG YA'NAN (author) / WANG JIAN (author) / XU LICHENG (author) / HE FENG (author) / SUN YUEWEN (author)

    Publication date :

    2024-11-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




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