The invention provides a power battery system and a charging method thereof, a storage medium and a vehicle control unit. The power battery system comprises a frequency converter, a bidirectional DC/DC module and a storage battery, the frequency converter comprises an energy storage capacitor, a first positive electrode end of the bidirectional DC/DC module is connected to a first end of the energy storage capacitor, a first negative electrode end of the bidirectional DC/DC module is connected to a second end of the energy storage capacitor, a second positive electrode end of the bidirectionalDC/DC module is connected to the positive electrode end of the storage battery, and a second negative electrode end of the bidirectional DC/DC module is connected to the negative electrode end of thestorage battery. The controlled end of the bidirectional DC/DC module executes a pre-charging action after receiving a pre-charging signal, and the voltage of the storage battery charges the energy storage capacitor after being boosted by the bidirectional DC/DC module. According to the scheme, the control step of a switch or a relay in a hardware pre-charging circuit is omitted, the hardware pre-charging circuit can also be further omitted, and the cost of the power battery system is reduced while the safety of the power battery system is improved.

    本申请提供一种动力电池系统及其充电方法、存储介质及整车控制器,动力电池系统包括变频器、双向DC/DC模块和蓄电池,所述变频器内包括储能电容,所述双向DC/DC模块的第一正极端连接于储能电容第一端,所述双向DC/DC模块的第一负极端连接于储能电容第二端,所述双向DC/DC模块的第二正极端连接于蓄电池正极端,所述双向DC/DC模块的第二负极端连接于蓄电池负极端;所述双向DC/DC模块的被控端接收到预充电信号后执行预充电动作,所述蓄电池的电压经所述双向DC/DC模块升压后向所述储能电容充电。本申请中的方案省略硬件预充电路中开关或继电器的控制步骤,也能进一步省略硬件预充电路,在提高动力电池系统的安全性的同时降低动力电池系统的成本。


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    Title :

    Power battery system and charging method thereof, storage medium and vehicle control unit


    Additional title:

    动力电池系统及其充电方法、存储介质和整车控制器


    Contributors:
    HE FUTONG (author)

    Publication date :

    2021-03-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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