The invention relates to an anti-feed method for a new energy automobile, which comprises the following steps of: after the power-off locking of the whole automobile, monitoring the dark current output of a storage battery in real time, and timing the power-off time of the whole automobile; whether the real-time dark current value is abnormal or not is judged according to a preset dark current normal interval, and a dark current abnormal message is sent to the bus when it is judged that the real-time dark current value is abnormal; when a dark current abnormal message is received, a power-off instruction is sent, all non-shutdown actuators are powered off, and the power-off time of the whole vehicle is counted to be zero; when the dark current abnormal message is not received and the time for timing the power-off time of the whole vehicle exceeds a first preset time, carrying out regular inspection on the terminal voltage of the storage battery; when the detected terminal voltage of the storage battery is lower than the preset voltage value, the DCDC converter is awakened to charge the storage battery, the floating voltage characteristic and dark current abnormity processing of the storage battery are considered while the storage battery of the whole vehicle is charged, and the overall anti-feed reliability can be improved.

    本发明涉及一种新能源汽车防馈电方法,包括在整车下电闭锁后,对蓄电池的暗电流输出进行实时监控,并对整车下电时间进行计时;根据预设暗电流正常区间来判定实时暗电流值是否异常,并在判定为异常时向总线发送暗电流异常报文;接收到暗电流异常报文时,发送断电指令,将非关重执行器全部断电,并将整车下电时间计时归零;未接收到暗电流异常报文,且计时整车下电时间超过第一预设时间时,对蓄电池端电压进行定时巡检;响应于检测到蓄电池端电压低于预设电压值时,唤醒DCDC变换器对蓄电池进行充电,在对整车蓄电池补电的同时考虑了蓄电池浮压特性和暗电流异常的处理,能提升整体防馈电的可靠性。


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    Title :

    New energy automobile anti-feed method


    Additional title:

    一种新能源汽车防馈电方法


    Contributors:
    GUAN CHENGFA (author) / LIAO ZHIQIANG (author) / ZHOU HAIXIA (author)

    Publication date :

    2023-09-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



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