The invention aims to solve the single problem that a conventional fuel cell vehicle energy management method only considers reduction of hydrogen consumption, but cannot ensure that a fuel cell and a power cell work in a proper state although the economical efficiency can be improved, cannot reduce the comprehensive cost of the whole vehicle, and cannot reduce the energy consumption of the whole vehicle. The invention provides a fuel cell vehicle energy management control method considering multi-objective optimization. Modeling is carried out on a whole vehicle power key component and a vehicle fuel cell system mechanism, a fuel cell and power cell life decline estimation and equivalent hydrogen consumption model is established, and a Pontryagin minimum value principle is adopted to optimize a multi-target problem of fuel cell vehicle energy management. According to the method, the constraint condition of starting and ending SOC balance and the power requirement of a driver can be met, it is guaranteed that hydrogen consumption approximately reaches the global optimal effect, and while the economical efficiency of the whole vehicle is guaranteed, the service life decline of a fuel cell and a power cell is reduced.
本发明旨在解决以往燃料电池汽车能量管理方法仅考虑减少氢耗的单一问题,虽然能提升经济性,但却无法保证燃料电池和动力电池工作在合适的状态下,无法降低整车综合成本,本发明提出了一种考虑多目标优化的燃料电池汽车能量管理控制方法。本发明对整车动力关键部件和车用燃料电池系统机理进行建模,并建立燃料电池、动力电池寿命衰退估计与等效氢耗模型,采用庞特里亚金极小值原理对燃料电池汽车能量管理的多目标问题进行优化。本发明能够满足始末SOC平衡的约束条件以及驾驶员的动力需求,并保证氢耗近似达到全局最优的效果,在保证整车经济性的同时降低燃料电池和动力电池的寿命衰退。
Fuel cell vehicle energy management control method considering multi-objective optimization
一种考虑多目标优化的燃料电池汽车能量管理控制方法
2023-06-23
Patent
Elektronische Ressource
Chinesisch
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