The invention discloses an insulation fault control method and control device for a fuel cell vehicle. The insulation fault control method of the fuel cell vehicle comprises the following steps: acquiring a change state of a current insulation resistance value of the fuel cell vehicle; if the change state is a first fault state, outputting a first fault signal; cutting off the output of the fuel cell according to the first fault signal; if the change state is a second fault state after the preset time, outputting a second fault signal; and cutting off the output of the power battery according to the second fault signal. By controlling the fuel cell and the power cell respectively, when the insulating property of the automobile goes wrong, the fuel cell is cut off firstly, so that the automobile can be driven by the power cell to run to a maintenance point, and the situation that the automobile breaks down immediately, and traffic safety is affected is prevented.

    本申请公开了一种燃料电池汽车的绝缘故障控制方法和控制装置。燃料电池汽车的绝缘故障控制方法包括:获取燃料电池汽车的当前绝缘电阻值的变化状态;若变化状态为第一故障状态,则输出第一故障信号;根据第一故障信号切断燃料电池的输出;若在预设时间后变化状态为第二故障状态,则输出第二故障信号;根据第二故障信号切断动力电池的输出。通过对燃料电池和动力电池分别进行控制,当汽车的绝缘性能出现问题时,先切断燃料电池,使得汽车可以在动力电池的驱动下行驶至维修点,防止汽车立即抛锚,影响交通安全。


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    Title :

    Insulation fault control method and control device for fuel cell vehicle


    Additional title:

    燃料电池汽车的绝缘故障控制方法和控制装置


    Contributors:
    LIN HONGHUI (author) / CAO GUIJUN (author)

    Publication date :

    2021-06-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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