The invention relates to a battery parallel control method for an electric vehicle, the electric vehicle comprises a motor, a first battery module and a second battery module, each battery module is provided with a battery, a charging switch and a discharging switch which are connected in series, and the method comprises the steps that an output voltage value of the first battery module is compared with an output voltage value of the second battery module; when the output voltage value of the first battery module is larger than the output voltage value of the second battery module, a charging switch and a discharging switch of the first battery module are turned on, and a discharging switch of the second battery module is turned on; when it is judged that the discharging current value of the second battery module is larger than a preset current value, the charging switch of the second battery module is turned on, so that the second battery module is stably connected with the first battery module in a lap joint mode to jointly supply power to the motor, and the problem that the electric vehicle runs unsmoothly in the battery lap joint process is solved.

    本发明为一种电动车辆的电池并联控制方法,该电动车辆包含马达、第一电池模块及第二电池模块,各电池模块中设置有相串联的电池、充电开关及放电开关,该方法包含:比较该第一电池模块的输出电压值及该第二电池模块的输出电压值;当该第一电池模块的输出电压值大于该第二电池模块的输出电压值,导通该第一电池模块的充电开关、放电开关,并导通该第二电池模块的放电开关;当判断该第二电池模块的放电电流值大于一预设电流值时,再导通该第二电池模块的该充电开关,使该第二电池模块平稳地搭接该第一电池模块而共同供电给该马达,减少电池搭接过程中对电动车辆产生运转不顺的问题。


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    Title :

    Battery parallel control method for electric vehicle


    Additional title:

    电动车辆的电池并联控制方法


    Contributors:
    XIAO YIWEI (author)

    Publication date :

    2021-05-28


    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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