The embodiment of the invention provides a fault diagnosis method and device, electronic equipment and a readable storage medium, and relates to the technical field of automobiles, the fault diagnosis method and device are applied to a low-voltage storage battery pack of a hybrid electric vehicle, and the low-voltage storage battery pack is composed of a first storage battery and a second storage battery which are connected in series and used for supplying power to a whole vehicle control system of the hybrid electric vehicle; the first storage battery is used for supplying power to an engine of the hybrid electric vehicle; the method comprises the steps of detecting a first voltage value of the low-voltage storage battery pack; if the first voltage value meets a first early warning condition, executing at least one of the following operations: judging whether a second voltage value of the first storage battery meets a second early warning condition, and if not, reporting fault information of the first storage battery; and judging whether a third voltage value of the second storage battery meets a third early warning condition, and if not, reporting fault information of the second storage battery. The problems that the fault detection precision of a low-voltage storage battery of an existing hybrid electric vehicle is not enough, and fault positioning is not accurate are solved.

    本发明实施例提供一种故障诊断方法、装置、电子设备和可读存储介质,涉及汽车技术领域,应用于混合动力汽车的低压蓄电池组,低压蓄电池组由串联的第一蓄电池和第二蓄电池构成,用于向混合动力汽车的整车控制系统供电;第一蓄电池用于向混合动力汽车的发动机供电;方法包括:检测低压蓄电池组的第一电压值;若第一电压值满足第一预警条件时,执行下述操作中的至少之一:判断第一蓄电池的第二电压值是否满足第二预警条件,不满足则上报第一蓄电池的故障信息;判断第二蓄电池的第三电压值是否满足第三预警条件,不满足则上报第二蓄电池的故障信息。解决了现有的混合动力汽车低压蓄电池故障检测精度不够,故障定位不精确的问题。


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    Title :

    Fault diagnosis method and device, electronic equipment and readable storage medium


    Additional title:

    故障诊断方法、装置、电子设备和可读存储介质


    Contributors:

    Publication date :

    2021-09-03


    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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