The invention discloses a working condition self-adaptive variable equivalent factor hybrid electric vehicle energy management method which comprises the following steps: based on a DP algorithm and an ECMS strategy, obtaining optimal equivalent factors of four categories of congestion, city, suburban and high-speed working conditions, and constructing torque, SOC and equivalent factor numerical value libraries under different working condition categories and different battery SOCs; providing an equivalent factor expression based on vehicle speed change according to the fact that the equivalent factor control effect is the same as the vehicle speed change direction; based on a V2X network and an MPC model prediction control method, total demand torque and vehicle speed change information are obtained, a corresponding equivalent factor in a numerical library is extracted as an equivalent factor initial value, and a working condition self-adaptive optimal equivalent factor is obtained in combination with the vehicle speed information and an equivalent factor expression; and performing variable equivalent factor hybrid electric vehicle energy management by using an equivalent fuel consumption minimum strategy. The method is used for rapidly selecting the optimal equivalent factor based on the actual working condition, and the fuel economy of the hybrid electric vehicle is further improved.

    本发明公开了一种工况自适应的变等效因子混合动力汽车能量管理方法,基于DP算法和ECMS策略,得出拥堵、城市、郊区、高速工况四种类别的最优等效因子,构建不同工况类别和不同电池SOC下的转矩、SOC、等效因子数值库;根据等效因子控制效果与车速变化方向相同,提出基于车速变化的等效因子表达式;基于V2X网络和MPC模型预测控制方法,得到总需求扭矩、车速变化信息,提取数值库中对应等效因子作为等效因子初值,结合车速信息与等效因子表达式获得工况自适应的最优等效因子;使用等效燃油消耗最小策略进行变等效因子混合动力汽车能量管理。本发明用于实现基于实际工况快速选取最优等效因子,进一步提高混合动力汽车的燃油经济性。


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    Title :

    Working condition self-adaptive variable equivalent factor hybrid electric vehicle energy management method


    Additional title:

    一种工况自适应的变等效因子混合动力汽车能量管理方法


    Contributors:
    SUN HOUHUAN (author) / DAI YUANYANG (author) / DOU ZHI (author) / GAO FENG (author) / WANG ZHOULI (author) / ZI DAOYUAN (author)

    Publication date :

    2023-09-08


    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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