The invention relates to an energy management method of a fuel cell automobile power system, the method is established in the fuel cell automobile taking a fuel cell and a power cell as power sources and comprises the following steps: determining the running state of a motor by judging the required power of the power cell, so that the output power of the fuel cell is controlled by adopting different methods. When the required power Preq of the motor is larger than 0, the output power of the fuel cell is calculated through a fuzzy controller and an SG filtering algorithm; when the required power Preq of the driving motor is less than or equal to 0, the fuel cell is enabled to output at a high-efficiency constant value. Finally, the output power of the power battery is the difference value between the motor demand power and the output power of the fuel cell. According to the invention, the change rate of output power and frequent start and stop during working of the fuel cell can be reduced, and the durability of the fuel cell is improved.
本发明涉及一种燃料电池汽车动力系统的能量管理方法,该方法建立在以燃料电池和动力电池为动力源的燃料电池汽车中,该能量管理方法通过对动力电池需求功率的判断,确定电机的运行状态,从而采用不同的方法控制燃料电池的输出功率。当电机需求功率Preq>0时,通过模糊控制器、SG滤波算法计算燃料电池的输出功率;当驱动电机需求功率Preq≤0时,使燃料电池以一个高效率定值输出。最终,动力电池的输出功率为电机需求功率与燃料电池输出功率的差值。本发明可以减少燃料电池工作时输出功率的变化率以及频繁启停的现象,提高燃料电池的耐久性。
Energy management method of fuel cell automobile power system
一种燃料电池汽车动力系统的能量管理方法
2021-09-07
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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