The invention discloses a lithium battery system for a low-speed electric vehicle for controlling feedback energy, which comprises a BMS (Battery Management System) for acquiring real-time data of a battery cell, and the BMS is provided with an electric quantity simulation interface for simulating voltage; the energy release module is provided with a plurality of energy release units, and the energy release units control feedback energy flowing to the battery cells and determine the working state and power of the energy release units according to the analog voltage; the electric quantity simulation interface simulates a first battery voltage into a second battery voltage, and the energy release unit is started according to the first battery voltage and adjusts power according to the second battery voltage; on the basis that the scheme of a traditional low-speed electric vehicle instrument controller is not changed, accurate display of the electric quantity of a lithium battery is achieved through a voltage simulation interface, the battery is protected against triggering over-current protection and under-voltage protection through a power reduction protection strategy of an original vehicle, safety risks caused by sudden power failure of the battery are avoided, and released energy is controlled within a safety range.

    本发明公开了一种控制回馈能量的低速电动车辆用锂电池系统,包括:采集电池电芯实时数据的BMS,所述的BMS设有模拟电压的电量模拟接口;具有多个能量释放单元的能量释放模块,所述的能量释放单元控制流向电池电芯的回馈能量,并根据模拟电压确定自身的工作状态及功率;所述的电量模拟接口将第一电池电压模拟为第二电池电压,所述的能量释放单元根据第一电池电压开启并根据第二电池电压调节功率;在不改动传统低速电动车仪表控制器的方案基础上,通过电压模拟接口实现锂电池电量的准确显示,利用原车的降功率保护策略保护电池不触发过流保护和欠压保护,避免电池突然断电带来的安全风险,将释放的能量控制在安全范围内。


    Access

    Download


    Export, share and cite



    Title :

    Lithium battery system for low-speed electric vehicle capable of controlling feedback energy


    Additional title:

    一种控制回馈能量的低速电动车辆用锂电池系统


    Contributors:
    SUN RUI (author) / HOU LONGLONG (author) / GAO TENGFEI (author) / ZHAO WEI (author) / WU TAO (author)

    Publication date :

    2024-08-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



    Lithium battery and system capable of controlling two-wheeled electric vehicle

    LI QIANG / ZHANG TAO / LUO JING et al. | European Patent Office | 2024

    Free access

    Electric vehicle lithium battery capable of quickly replacing module

    DAI SIDE / ZHANG ZHENYANG | European Patent Office | 2021

    Free access

    Back off speed controlling method for battery electric vehicle

    DING MINGCHAO / GAO ZHI / ZHANG DONGHAI | European Patent Office | 2015

    Free access

    High energy lithium battery system in electric vehicle propulsion

    Seiger, H.N. / Lyall, A.E. | Engineering Index Backfile | 1968