The invention relates to the technical field of electric vehicle control, in particular to a multi-group battery parallel control system and method for an electric vehicle, and the system comprises a plurality of groups of battery packs, a plurality of groups of diodes, a controller and a motor, the negative electrode of the controller is connected with the negative electrode of the battery pack, the controller is connected with the motor, and the multiple sets of diodes are connected with corresponding MOS tubes in parallel. When detecting that the motor tends to charge the battery packs, the shunt control system compares the voltages in the plurality of groups of battery packs, turns on the MOS tubes correspondingly connected in series with the battery pack with the highest voltage, charges the battery pack with the high voltage, turns off the MOS tubes correspondingly connected in series with other battery packs, and turns off the MOS tubes correspondingly connected in series with the other battery packs; compared with the prior art, the multi-group battery parallel control system of the electric vehicle adopting the technical scheme has the advantages that when the electric vehicle goes downhill for a long time or slows down rapidly, potential safety hazards are avoided, and meanwhile, the cruising ability of the batteries is enhanced.

    本发明涉及电动车控制技术领域,具体为电动车的多组电池并联控制系统和控制方法,包括多组电池包、多组二极管、控制器和马达,多组电池包分别对应串联二极管后并联,控制器的正极与电池包的正极连接,控制器负极与电池包的负极连接,控制器连接所述的马达,多组二极管并联有对应分别的MOS管。当并联器控制系统检测到马达有向电池包充电的趋势时,并联器控制系统将对多组电池包中电压进行比较,打开最高电压的电池包对应串联的MOS管,对高电压的电池包充电,其他电池包对应串联的MOS管关闭,采用本技术方案的电动车的多组电池并联控制系统,相对原来的技术而言,当遇到电动车长下坡或者急速减速的情况下,避免了安全隐患,同时加强电池的续航能力。


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    Title :

    Parallel control system and method for multiple groups of batteries of electric vehicle


    Additional title:

    电动车的多组电池并联控制系统和方法


    Contributors:
    ZHAO CAIQI (author) / WANG JIANGWEI (author) / WANG XIAOHUA (author) / WANG YANLING (author)

    Publication date :

    2023-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS



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