The invention relates to the technical field of fuel cells, in particular to a fuel cell cold start method, which comprises the following steps: setting an initial air compressor flow, starting a DCDC, and setting a constant voltage mode, a target voltage, a target current and an initial target in-pile air flow. According to the difference between the actual input current and the target current, the target in-pile air flow is closed-loop; adjusting the opening degree of the three-way valve; when the water temperature reaches the normal starting temperature, starting is ended; by means of the fuel cell cold start method, when the start command of the whole vehicle is received in the low-temperature environment, the fuel cell can be quickly started, and power can be output according to the requirement of the whole vehicle; a relatively high and constant air flow is ensured to dilute the concentration of tail emission hydrogen; controlling the opening of an inlet three-way valve to accurately adjust the in-pile air flow; according to the actual output current and the target current, carrying out closed-loop control on the in-pile air flow; therefore, the purpose of adjusting the output current is achieved.

    本发明涉及燃料电池技术领域,具体涉及一种燃料电池冷启动方法,所述包括冷启动方法包括设置初始空压机流量,开启DCDC,设置恒压模式、目标电压、目标电流以及初始目标入堆空气流量;根据实际输入电流与目标电流差值闭环条件目标入堆空气流量;调整三通阀开度阶段;当水温达到正常启动温度时启动结束;通过本发明的燃料电池冷启动方法,在低温环境下接收到整车的开机命令时,可快速启动并且按整车要求输出功率;保证较高且恒定的空气流量以稀释尾排氢气浓度;控制入口三通阀开度精确调节入堆空气流量;根据实际输出电流和目标电流闭环控制入堆空气流量;以达到调节输出电流的目。


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    Title :

    Fuel cell cold start method, fuel cell system, vehicle, storage medium and computer


    Additional title:

    一种燃料电池冷启动方法、燃料电池系统、车辆、储存介质及计算机


    Contributors:
    WANG PENG (author) / LI FEIQIANG (author) / ZHAO XINGWANG (author) / GAO YUNQING (author)

    Publication date :

    2023-10-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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