Electric vehicles (EVs) require an onboard battery charger unit and a battery management system (BMS) unit that balances the voltage levels for each battery cell. So far, both units are two completely autarkic power electronics systems. The circuit presented here operates as a battery charger when the EV is connected to the grid and as a voltage balancer when the EV is driving. Thus, the proposed circuit utilises two functions in one and therefore eliminates the need of having two autarkic units reducing complexity and reduction in component count. The proposed circuit operates as a flyback converter and achieves power factor correction during battery charging. The constant-current constant-voltage (CC–CV) charging method is employed to charge the batteries. However, to limit the number of sensors that will be employed as a result of varying cells during charging, the battery current is estimated using a single current transducer and embedding a converter model in the controller. The operation of the circuit is presented in detail and is supported by simulation results. A laboratory prototype is built to verify the effectiveness of the proposed topology. Experiment results show that the proposed method provides an integrated solution of on-board charging and voltage equalisation.


    Access

    Download


    Export, share and cite



    Title :

    Combining electric vehicle battery charging and battery cell equalisation in one circuit


    Contributors:

    Publication date :

    2021-06-23


    Remarks:

    Zhan , H , Wu , H , Muhammad , M , Lambert , S & Pickert , V 2021 , ' Combining electric vehicle battery charging and battery cell equalisation in one circuit ' , IET Electrical Systems in Transportation . https://doi.org/10.1049/els2.12031



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    DDC:    629



    Combining electric vehicle battery charging and battery cell equalisation in one circuit

    Huaxia Zhan / Haimeng Wu / Musbahu Muhammad et al. | DOAJ | 2021

    Free access

    Charging circuit for battery pack of electric vehicle and electric vehicle

    SHEN JIE / LI YISU | European Patent Office | 2021

    Free access

    BATTERY CHARGING CIRCUIT FOR ELECTRIC TWO-WHEELED VEHICLE

    CHOI JUNGBOK | European Patent Office | 2019

    Free access

    Charging pile for charging electric vehicle battery and electric vehicle battery charging method

    SHEN JIANLIANG / FU SHUANGHUI | European Patent Office | 2024

    Free access

    Charging protection circuit for battery pack of electric vehicle

    PENG ZHIHUI / QIN CHENGHENG / XIE YIKANG et al. | European Patent Office | 2023

    Free access