The invention provides an overvoltage protection circuit, an electronic control unit power supply module comprising the overvoltage protection circuit, and a vehicle, the overvoltage protection circuit comprises a voltage acquisition circuit, a first switch circuit and a second switch circuit, the voltage acquisition circuit outputs a first trigger signal when a current voltage value is greater than an upper limit threshold, and the first switch circuit outputs a second trigger signal when the current voltage value is greater than the upper limit threshold; the first trigger signal can control the first switch circuit to output the second trigger signal, the second trigger signal can control the second switch circuit to be switched off, and the second switch circuit is connected between the power supply end and the electronic control unit, so that the electronic control unit does not access the current voltage value of the power supply end after the second switch circuit is switched off; therefore, the electronic control unit is protected, the electronic control unit is prevented from being burnt when the current voltage value exceeds the upper limit threshold value, and moreover, the first switching circuit and the second switching circuit do not need to be triggered and controlled by large voltage, so that a high-cost high-voltage-resistant chip does not need to be used in the whole circuit, and the purpose of reducing the cost is achieved.

    本申请提供了一种过压保护电路及包括其的电子控制单元供电模块、车辆,过压保护电路包括电压采集电路、第一开关电路和第二开关电路,电压采集电路在当前电压值大于上限阈值时输出第一触发信号,第一触发信号能够控制第一开关电路输出第二触发信号,而第二触发信号能够控制第二开关电路断开,由于第二开关电路连接在供电端与电子控制单元之间,因此第二开关电路断开后电子控制单元不会接入供电端的当前电压值,从而对电子控制单元进行保护,避免其在当前电压值超过上限阈值时被烧毁,而且,由于第一开关电路和第二开关电路都不需要大电压触发控制,整个电路中都不再需要使用高成本的耐高压芯片,达到了降低成本的目的。


    Access

    Download


    Export, share and cite



    Title :

    Overvoltage protection circuit, electronic control unit power supply module comprising same, and vehicle


    Additional title:

    过压保护电路及包括其的电子控制单元供电模块、车辆


    Contributors:
    HAN LINGZHI (author)

    Publication date :

    2024-08-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



    Overvoltage protection device of vehicle power supply, vehicle and overvoltage protection method thereof

    MENG FAN'AO / KIL HWAN-KI / LIANG SHANG et al. | European Patent Office | 2023

    Free access


    Overvoltage protection circuit in vehicle

    European Patent Office | 2020

    Free access

    Overvoltage protection circuit in vehicle

    SONG CHANG KYU | European Patent Office | 2020

    Free access

    OVERVOLTAGE PROTECTION CIRCUIT AND METHOD OF OVERVOLTAGE PROTECTION

    GHADYALI ALIASGAR / STOTHART IAN | European Patent Office | 2025

    Free access