The invention discloses a fuel cell hybrid electric vehicle energy management method and system and a hybrid electric vehicle, and the management method comprises the steps: optimizing a threshold value based on a genetic algorithm, and taking the threshold value upper limit of a lithium battery SOC, the threshold value lower limit of the lithium battery SOC and the output power of a single fuel cell stack as decision variables for coding, enabling the equivalent hydrogen consumption of the same mileage and a constraint condition introduced as a penalty function to jointly form a fitness function, carrying out a plurality of rounds of evolution, and finally screening out an optimal solution; energy management is carried out according to the automobile state, the energy management is divided into a braking state and a non-braking state, and when the lithium battery discharges and the fuel battery provides residual required power, the number of the input fuel cell stacks is selected according to the difference value, and the input fuel cell stacks are selected according to the degradation degree. The problems that the energy management efficiency of the fuel cell hybrid electric vehicle needs to be improved, and energy consumption and the service life are difficult to consider at the same time are solved.
本发明公开了一种燃料电池混动汽车能量管理方法、系统及混动汽车,管理方法包括:基于遗传算法优化阈值,将锂电池SOC的阈值上限,锂电池SOC的阈值下限,单个燃料电池堆的输出功率作为决策变量进行编码,将相同里程的等效耗氢量和作为罚函数引入的约束条件共同组成适应度函数,进行若干轮进化,最终筛选出优化解;根据汽车状态进行能量管理,分为制动状态和非制动状态,并在锂电池放电,燃料电池提供剩余需求功率时,根据差值选择投入的燃料电池堆数目,根据退化程度选择投入的燃料电池堆。本发明解决了燃料电池混动汽车的能量管理效率有待提高,能耗和使用寿命难以兼顾的问题。
Fuel cell hybrid electric vehicle energy management method and system and hybrid electric vehicle
一种燃料电池混动汽车能量管理方法、系统及混动汽车
2024-05-10
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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