The invention discloses a battery management system, a voltage sampling control circuit thereof and an electric vehicle. The voltage sampling control circuit specifically comprises a high-voltage input end, a voltage division circuit, a switching circuit, an MOS transistor, a sampling circuit and a high-voltage output end. Through the control of the switching circuit, the voltage output by the high-voltage input end can be output to the sampling circuit through the MOS transistor, and the sampling circuit outputs the sampling voltage to the analog front-end chip to realize voltage sampling. Asthe circuit is simple in structure, a plurality of devices required for isolation between high voltage and low voltage are saved, and the cost is reduced.

    本申请公开了一种电池管理系统及其电压采样控制电路和电动汽车,该电压采样控制电路具体包括高压输入端、分压电路、开关电路、MOS管、采样电路和高压输出端。通过开关电路的控制,可以实现将高压输入端输出的电压经过MOS管输出到采样电路,并使采样电路将采样电压输出到模拟前端芯片实现电压采样。由于本电路结构简单,节省了高低压之间隔离所需的很多器件,从而降低了成本。


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    Title :

    Battery management system, voltage sampling control circuit thereof and electric vehicle


    Additional title:

    一种电池管理系统及其电压采样控制电路和电动汽车


    Contributors:
    LUO FENG (author)

    Publication date :

    2021-02-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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