The invention provides a hybrid electric vehicle energy efficiency optimization control method based on working condition prediction. The method is characterized by comprising steps of 1, obtaining road surface information according to a vehicle-mounted GPS, and storing the road surface information, and acquiring environment information according to the vehicle body controller, 2, obtaining an optimal control SOC according to the road surface information and the environment information, 3, calculating vehicle demand torque according to the environment information, calculating an SOC deviationvalue according to the actual SOC and the optimal control SOC, calculating an optimal control equivalence factor according to the SOC deviation value and the optimal control SOC change rate equivalence factor, and calculating an optimal control output instruction of the travel of the hybrid electric vehicle according to the demand torque, the optimal control equivalence factor and the optimal control SOC, and 4, after the travel of the vehicle is finished, calculating and storing the current working condition data, and updating the working condition database. Whole-process electric energy distribution optimization and short-range part working point optimization of the hybrid electric vehicle are achieved, and the method has the advantages of being high in oil saving rate and good in real-time performance.
本发明提供了一种基于工况预测的混合动力汽车能效优化控制方法,其特征在于,包括:步骤1:根据车载GPS获取路面信息并进行存储;根据车身控制器获取环境信息;步骤2:根据路面信息和环境信息,得到最优控制SOC;步骤3:根据环境信息计算车辆需求扭矩;根据实际SOC和最优控制SOC计算SOC偏差值;根据SOC偏差值和最优控制SOC变化速率的等价因子计算最优控制的等价因子;根据需求扭矩、最优控制的等价因子和最优控制SOC计算混合动力汽车行程的最优控制输出指令;步骤4:在车辆行程结束后,计算并存储当前工况数据,对工况数据库进行更新。本发明实现了对混合动力汽车的全程电能分配优化和短程部件工作点优化,具有节油率高、实时性好的特点。
Hybrid electric vehicle energy efficiency optimization control method and system based on working condition prediction
基于工况预测的混合动力汽车能效优化控制方法及系统
2020-10-27
Patent
Electronic Resource
Chinese
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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