The invention provides a method and a device for predicting the driving range of a pure electric vehicle. The method comprises the following steps of: measuring different initial electric quantities of the vehicle and a battery capacity correction coefficient; defining travel fragments to form a travel condition library; calculating each parameter characteristic of the vehicle; constructing a driving range prediction model; acquiring vehicle state parameters; acquiring parameter information between a driver and a destination; selecting travel segments with corresponding feature errors within 5%, and calculating average travel features of the travel segments; obtaining a power consumption predicted value EC and a discharge rate C; and calculating the driving range of the vehicle. The method has the beneficial effects that the influence of the environment temperature and the discharge rate on the actual capacity of the battery in different electric quantity states is fully considered; through a machine learning method, the prediction of the driving mileage is associated with the driving behavior of the driver, and a driving mileage prediction result which is more consistent with the car using habit of the user can be obtained.
本发明提供了一种纯电动汽车续驶里程预测方法及预测装置,包括以下步骤:测得车辆不同初始电量以及电池容量修正系数;定义出行片段,构成出行工况库;计算车辆各参数特征;构建续驶里程预测模型;获取车辆状态参数;获取驾驶者与目的地之间参数信息;挑选出对应特征误差在5%以内的出行片段,计算出行片段的平均行驶特征;得到电耗预测值EC以及放电倍率C;计算车辆续驶里程。本发明有益效果:充分考虑了不同电量状态下环境温度以及放电倍率对电池实际容量的影响;通过机器学习的方法,将续驶里程的预测和驾驶员驾驶行为进行了关联,可以得到和用户用车习惯更为吻合的续驶里程预测结果。
Method and device for predicting driving range of pure electric vehicle
一种纯电动汽车续驶里程预测方法及预测装置
2023-03-21
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen |
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