The invention discloses a slope slow descent method and device for a new energy vehicle, and the method comprises the steps: setting a vehicle slope slow descent function, and enabling the vehicle slope slow descent function to calibrate a PID parameter through the deviation between a target vehicle speed and a current vehicle speed; feedforward torque calibration is carried out through the current vehicle speed and the current gradient; carrying out superposition calculation on the calibrated PID parameters to generate a PID control signal; adding the PID control signal and the calibrated feedforward torque to generate an output torque signal, generating a control command according to the output torque signal, and driving the vehicle to output corresponding torque according to the control command; the negative torque is output by calculating the negative torque output request, speed control of the vehicle on the slope road is achieved, and overheating and loss of a brake disc are avoided; negative torque is output through the motor, the recovered electric energy can charge the power battery, the endurance mileage is increased, and energy is saved.

    本发明公开了一种新能源车坡路缓降方法及装置,设置车辆坡路缓降功能,车辆坡路缓降功能包括通过目标车速与当前车速的偏差对PID参数进行标定;通过当前车速和当前坡度进行前馈扭矩标定;将标定的PID参数进行叠加计算,生成PID控制信号;将PID控制信号与标定的前馈扭矩相加,生成输出扭矩信号,根据输出扭矩信号,生成控制命令,根据控制命令驱动车辆输出相应的扭矩;本发明通过计算输出负扭矩请求输出负扭矩,实现车辆坡路下的速度控制,避免刹车盘过热和刹车盘损耗;通过电机输出负扭矩,回收的电能可以给动力电池充电,增加续航里程,节约能源。


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    Title :

    New energy vehicle slope slow descending method and device


    Additional title:

    新能源车坡路缓降方法及装置


    Contributors:
    TANG DA (author) / WANG ZIJUN (author) / ZHAO WENBO (author) / SUN FUXIN (author) / ZHANG HANWEN (author) / YANG XIAOHAN (author) / XIN WEIYU (author) / TONG BAISONG (author)

    Publication date :

    2024-08-30


    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



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