The invention belongs to the technical field of automobile equipment, and particularly relates to an automatic awakening and electricity supplementing method for a bus, which comprises the following operation steps: S1, when a driver does not turn off a low-voltage power supply main switch after getting off, a lead-acid storage battery provides a constant power supply for all electric appliances on the bus, and at the moment, the electric appliances are in a discharging state; s2, when the consumption of the electric quantity of the battery is less than or equal to 20% as time goes on, the VCU monitors that the electric quantity of the lead-acid battery is insufficient, and pre-judgment can cause starting failure, and S3, the whole vehicle controller awakens the BMS, closes the total negative high-voltage contactor and controls the pre-charging contactor in the PDU to be closed through the bus network at the moment, and the purposes that the whole vehicle cost is not increased, the process is simple, stable and reliable, and the service life of the whole vehicle is prolonged are achieved. And the charge capacity of the lead-acid battery is automatically monitored to judge whether to start charging or not and automatically stop charging after being fully charged, the whole process is automatically controlled, manual intervention is not needed, and great convenience is brought to travel and vehicle use.

    本发明公开的属于汽车设备技术领域,具体为一种公交车用自动唤醒补电方法,包括以下操作步骤:S1:当司机下车后没有关闭低压电源总开关,那么铅酸蓄电池将为车上所有电器提供常电电源,此时处于放电状态,S2:当电池电量随着时间的推移消耗≤20%,VCU监测到铅酸电池电量不足,预判会导致启动失败,S3:此时整车控制器会通过总线网络唤醒BMS,闭合总负高压接触器,在控制PDU内部预充接触器闭合,本发明达到不增加整车成本,工艺简单,稳定可靠,且自动监测铅酸电池的荷电量来判断是否启动充电,以及充满电后自动停止,全过程自动控制,无需人员干预,给出行和用车带来了很大的方便的效果。


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    Title :

    Automatic awakening and electricity supplementing method for bus


    Additional title:

    一种公交车用自动唤醒补电方法


    Contributors:
    SHE WENTAO (author) / CAI JUHUA (author) / LI XIANG (author)

    Publication date :

    2022-03-15


    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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