The present disclosure discloses an energy management system of an electric vehicle, a control method therefor, and an electric vehicle. The system includes: a power battery including a plurality of battery modules; a plurality of balanced DC-DC converter modules, first ends of the balanced DC-DC converter modules being correspondingly connected to the battery modules and second ends of the balanced DC-DC converter modules being connected in parallel to a low-voltage direct-current bus; a bidirectional car charger having an alternating-current end configured to connect to a power grid/charging box, a first direct-current end connected to the low-voltage direct-current bus, and a second direct-current end connected to a high-voltage direct-current bus; a sampling module; and a control module configured to separately control each balanced DC-DC converter module according to the state information of each battery module, the state information of the low-voltage battery, the state information of the power battery and the load information of the low-voltage electric apparatuses to perform balancing management on the plurality of battery modules, supply power to the low-voltage electric apparatuses, and charge the low-voltage battery, and controlling the bidirectional car charger to supply power to the low-voltage electric apparatuses and charge the low-voltage battery. The system realizes the power supply to the low-voltage components of the entire vehicle, the balancing of the power battery and the redundancy design of key functions, and improves the safety and reliability of the system.


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    Title :

    ELECTRIC-VEHICLE ENERGY MANAGEMENT SYSTEM, CONTROL METHOD THEREOF, AND ELECTRIC VEHICLE


    Contributors:
    DENG LINWANG (author) / TENG JINGCUI (author) / WANG CHAO (author) / ZENG YU (author) / YANG SHIQING (author)

    Publication date :

    2019-06-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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