An electric vehicle driving range estimation method based on a K value comprises the following steps that A after a vehicle key is powered on, a vehicle control unit (VCU) reads the mileage per unit SOC at the last moment in a current EEPROM, the EEPROM accumulative circulation mileage within the unit SOC at the last moment and the current mileage; B after the unit SOC meets an updating triggeringcondition, the vehicle control unit VCU records the mileage at the end of the cycle and the end value of the electric quantity of the battery in the cycle, and then updates the mileage traveled by each unit SOC in the cycle; C if the SOC difference value of the current cycle is greater than 0 and the accumulated mileage value of the current cycle is greater than 5km, the K value is updated; D thedriving range of the vehicle is calculated; and E after the vehicle key is powered off, the vehicle control unit VCU stores the K value and the accumulated mileage value in the current cycle into theEEPROM. The method provided by the invention is high in calculation accuracy and low in cost.

    一种基于K值的电动汽车续驶里程估算方法,包括以下步骤:A、当车辆钥匙上电后,整车控制器VCU读取当前EEPROM中上一时刻每单位SOC所行驶的里程数、上一时刻单位SOC内EEPROM累计循环里程数、当前里程数;B、当单位SOC满足触发更新条件后,整车控制器VCU记录本次循环结束时的里程数、本次循环电池电量结束值,然后更新本次循环每单位SOC所行驶的里程数;C、若本次循环的SOC差值大于0且本次循环累计里程值大于5km,则更新K值;D、计算车辆的续驶里程;E、当车辆钥匙下电后,整车控制器VCU保存K值和本次循环累计里程值到EEPROM中。本设计不仅计算准确度高,而且成本低。


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    Title :

    Electric vehicle driving range estimation method based on K value


    Additional title:

    一种基于K值的电动汽车续驶里程估算方法


    Contributors:
    CHEN HUAN (author) / LUO RONG (author) / CHEN SI (author) / GENG JIJUN (author) / CAO YITAO (author) / KOU LIKAI (author) / WANG QINGXIN (author) / GUO JIAMIAO (author) / CAI ZHUANGZHUANG (author) / XIONG WEI (author)

    Publication date :

    2021-02-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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