The invention discloses a planetary series-parallel hybrid electric vehicle energy optimization method based on battery heat and aging, and aims to solve the problems of energy distribution of a planetary series-parallel hybrid electric vehicle and gradual attenuation of the performance of a battery in work, the control method comprises the following steps: firstly, establishing a control-orientedbattery heat model and a battery aging model; wherein the battery aging model comprises a calendar aging model and a cycle aging model, then taking the sum of the fuel consumption cost and the battery life attenuation cost of each stage as an optimization objective function, and finally formulating an energy management optimization control strategy based on model prediction control; wherein the model prediction control comprises three links of model prediction, rolling optimization and feedback correction, utilizing a Markov model for prediction, and adopting a dynamic programming algorithm for solving in a prediction time domain. The method provided by the invention considers the heat and aging of the battery, effectively slows down the attenuation degree of the service life of the battery, ensures the fuel economy of the vehicle, and reduces the cost of the whole life cycle of the vehicle.
本发明公开一种基于电池热及老化的行星混联混动汽车能量优化方法,针对行星混联式混合动力汽车能量分配及电池在工作中性能会逐渐衰减的问题,该控制方法包括:首先建立面向控制的电池热模型和电池老化模型,电池老化模型包括日历老化模型和循环老化模型两部分,然后把每阶段的燃油消耗成本和电池寿命衰减成本总和作为优化目标函数,最后制定基于模型预测控制的能量管理优化控制策略,模型预测控制包括预测模型、滚动优化和反馈校正三个环节,利用马尔可夫模型进行预测,在预测时域内采用动态规划算法求解。本发明提供的方法考虑了电池热及老化,有效减缓了电池寿命衰减程度并保证了车辆燃油经济性,降低了车辆全寿命周期成本。
Planetary series-parallel hybrid electric vehicle energy optimization method based on battery heat and aging
一种基于电池热及老化的行星混联混动汽车能量优化方法
02.04.2021
Patent
Elektronische Ressource
Chinesisch
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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