The invention provides a control method and device of a vehicle-mounted two-way charger and an electric vehicle. The method is applied to a battery management system (BMS), and comprises the following steps: determining a resistance value of a circuit connected with a charging and discharging muzzle as a first preset value according to a CC signal and determining that a voltage value of a CP signal on the circuit connected with the charging and discharging muzzle is in a connection stage or a vehicle charging stage, and determining that a gun head is a charging gun head; when the resistance value of a circuit connected with the charging and discharging muzzle is determined to be a second preset value according to the CC signal and the voltage value of the CP signal is determined to be zero, the gun head is determined to be a vehicle external discharging gun head; determining that the resistance value of a circuit connected with the charging and discharging muzzle is a first preset value according to the CC signal, and determining that the gun head is a vehicle-to-vehicle discharging gun head when determining that the voltage value of the CP signal is zero; and controlling the vehicle-mounted bidirectional charger to start a corresponding working mode in combination with the gun head type and the working state of the vehicle. By means of the method, the stability and safety in the vehicle charging and discharging process are improved, and user operation is simplified.

    本申请提供了一种车载双向充电机的控制方法、装置及电动汽车。该方法应用于电池管理系统BMS,包括:根据CC信号确定与充放电枪口连接的电路的电阻值为第一预设值且确定与充放电枪口连接的电路上的CP信号的电压值处于连接阶段或车辆充电阶段时,确认枪头为充电枪头;根据CC信号确定与充放电枪口连接的电路的电阻值为第二预设值且确定CP信号的电压值为零时,确认枪头为车对外放电枪头;根据CC信号确定与充放电枪口连接的电路的电阻值为第一预设值,且确定CP信号的电压值为零时,确认枪头为车对车放电枪头;结合枪头类型与车辆的工作状态控制车载双向充电机启动对应的工作模式。利用该方法提升了车辆充放电过程中的稳定性和安全性,简化了用户操作。


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    Title :

    Control method of vehicle-mounted bidirectional charger, battery management system and electric vehicle


    Additional title:

    车载双向充电机的控制方法、电池管理系统及电动汽车


    Contributors:
    LI XIAOPENG (author) / CHEN YANLEI (author) / HUANG WEI (author) / JIANG WEI (author) / SUN XILIANG (author)

    Publication date :

    2021-06-11


    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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