The invention discloses a fuel cell low-temperature shutdown purging control method and system, a fuel cell and an automobile in the technical field of fuel cells. The method comprises the following steps: in response to a control instruction for entering a shutdown purging program, acquiring and recording the absolute humidity of the environment and the stack entering absolute humidity of air entering a fuel cell stack; calculating the change rate of the in-pile absolute humidity according to the collected in-pile absolute humidity; according to the absolute environment humidity, the in-pile absolute humidity, the change rate of the in-pile absolute humidity and a given target environment temperature, determining the purging time according to a set fuel cell low-temperature shutdown purging logic based on the in-pile absolute humidity; and in response to the fact that the purging duration reaches the determined purging time, stopping the purging program so as to enter a shutdown program. The control precision of the purging time is improved, excessive purging can be prevented, and the situation of insufficient purging can be avoided.
本发明公开了燃料电池技术领域的一种燃料电池低温停机吹扫控制方法、系统、燃料电池及汽车。所述方法包括:响应于进入关机吹扫程序的控制指令,采集并记录环境绝对湿度、进入燃料电池电堆的空气的入堆绝对湿度;根据采集的入堆绝对湿度,计算入堆绝对湿度的变化率;根据环境绝对湿度、入堆绝对湿度、入堆绝对湿度的变化率及给定的目标环境温度,按照设定的基于入堆绝对湿度的燃料电池低温停机吹扫逻辑确定吹扫时间;响应于吹扫时长达到确定的吹扫时间,停止吹扫程序,以便于进入关机程序。本发明提高了吹扫时间的控制精度,既可以防止过度吹扫,又能避免吹扫不足的情况发生。
Fuel cell low-temperature shutdown purging control method and system, fuel cell and automobile
燃料电池低温停机吹扫控制方法、系统、燃料电池及汽车
2023-05-09
Patent
Elektronische Ressource
Chinesisch
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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