The invention discloses an electric vehicle battery pack charging control circuit with a temperature compensation function. The electric vehicle battery pack charging control circuit comprises a starting circuit, a charging control circuit and a current bypass circuit, the starting circuit is connected to the positive and negative electrodes of the lithium battery; the starting circuit is respectively connected with the charging control circuit and the current bypass, and the charging control circuit and the current bypass are respectively connected with the negative electrode of the lithium battery; the output end of the charging control circuit is connected with the current bypass circuit; the charging control circuit comprises a sampling circuit, a differencing circuit and a compensating circuit; the sampling circuit is used for collecting the battery voltage and controlling the maximum charging voltage change of the battery according to the temperature change; the differencing circuit compares the sampling voltage with the built-in voltage so as to control the conduction degree of the differencing circuit; and the output end of the differencing circuit is connected with the compensating circuit. The charging equalization of the lithium battery at different temperatures can be realized, the service life of the battery can be effectively prolonged, and the charging equalization circuit has the advantages of simple structure, good practicability and the like.

    本发明公开了一种具备温度补偿的电动车电池组充电控制电路,包括启动电路、充电控制电路和电流旁路电路;所述启动电路连接在锂电池的正负极;所述启动电路分别与充电控制电路和电流旁路连接,充电控制电路和电流旁路还分别连接锂电池的负极;所述充电控制电路的输出端与电流旁路电路连接;所述充电控制电路包括采样电路、求差电路和补偿电路;所述采样电路用于采集电池电压,并根据温度变化控制电池最大充电电压变化;所述求差电路将采样电压与其内置电压比较进而控制求差电路的导通程度;所述求差电路的输出端与补偿电路连接。本发明可以实现不同温度下的锂电池充电均衡,能够有效的提升电池的使用寿命,而且本发明具有结构简单、实用性好等优点。


    Access

    Download


    Export, share and cite



    Title :

    Electric vehicle battery pack charging control circuit with temperature compensation


    Additional title:

    一种具备温度补偿的电动车电池组充电控制电路


    Contributors:
    QIN CHENGHENG (author) / PENG ZHIHUI (author)

    Publication date :

    2023-08-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



    Charging circuit for battery pack of electric vehicle and electric vehicle

    SHEN JIE / LI YISU | European Patent Office | 2021

    Free access

    Charging control circuit, battery pack and electric device

    PENG HONGWEI / ZHANG JIANGTAO | European Patent Office | 2024

    Free access

    Charging and discharging circuit, battery pack and electric vehicle

    XUE ZHIQIANG / WANG SHUAI / LU XIAO'AN et al. | European Patent Office | 2021

    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

    Battery pack charging device, control method thereof and vehicle with battery pack charging device

    YU FENGCHUAN / ZHANG XINGCHUN | European Patent Office | 2024

    Free access