The invention discloses a method for calculating the driving range of a pure electric vehicle. The method comprises the following steps of: firstly, acquiring the current residual electric quantity ofa power battery through a vehicle CAN bus message; correcting the current residual electric quantity of the battery according to acquired current environment temperature to obtain the corrected current residual electric quantity of the battery; obtaining the current driving mileage of the pure electric vehicle after the ignition switch is started and the power consumption of the battery corresponding to the current driving mileage; determining the current power consumption rate of the whole pure electric vehicle according to the current driving range of the pure electric vehicle and the powerconsumption of the power battery; obtaining the current driving range according to the corresponding relation among the corrected current residual electric quantity of the battery, the current powerconsumption rate of the whole vehicle and a range factor; and finally, obtaining the current driving range which is continuously converged with the actual driving range of the pure electric vehicle. According to the method, through continuous calculation iteration, the accuracy of displaying the driving range by an instrument in a driving process is greatly improved.
本发明公开了一种纯电动车续驶里程计算方法,首先通过车辆CAN总线报文获取动力电池当前剩余电量;并根据采集的当前环境温度对所述当前电池剩余电量进行修正,获得修正后的电池当前剩余电量;获得点火开关启动后纯电动车当前行驶里程,以及对应当前行驶里程下的电池电耗量;根据所述纯电动车当前行驶里程和动力电池的电耗量,确定所述纯电动车整车当前电耗率;根据所述修正电池当前剩余电量、所述整车当前电耗率和里程因子之间的续驶里程对应关系,获取当前续驶里程;最终获得与所述纯电动车实际续驶里程不断收敛的当前续驶里程。本发明通过不断持续计算迭代,大大提高了行驶过程中仪表显示续驶里程的准确度。
Method for calculating driving range of pure electric vehicle
一种纯电动车续驶里程预测方法
2020-09-15
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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