The invention discloses an overvoltage protection device of a vehicle power supply, a vehicle and an overvoltage protection method thereof, and the device comprises a comparison unit which samples the power supply voltage of the vehicle power supply, outputs a first level signal when the power supply voltage is greater than or equal to a reference voltage, and outputs a second level signal when the power supply voltage is smaller than the reference voltage; the delay unit is used for filtering the first level signal so as to allow the first level signal to be output when the duration time of the first level signal is greater than or equal to the set delay time, and a delay output signal is obtained; turning off the output of the second level signal; the overvoltage protection unit is disconnected when receiving the delay output signal so as to disconnect a load power supply loop of the vehicle power supply; and when the delay output signal is not received, the relay is not disconnected so as to form a load power supply loop. According to the scheme, overvoltage protection is achieved by detecting the power supply voltage of the vehicle power supply, and it is guaranteed that the vehicle control unit VCU is not damaged due to overvoltage of the power supply voltage of the vehicle power supply.

    本发明公开了一种车用供电电源的过压保护装置、车辆及其过压保护方法,该装置包括:比较单元,采样车用供电电源的电源电压,在电源电压大于或等于基准电压时输出第一电平信号而小于基准电压时输出第二电平信号;延时单元,对第一电平信号进行过滤处理,以在第一电平信号的持续时间大于或等于设定延时时间时允许第一电平信号输出,得到延时输出信号;关断第二电平信号的输出;过压保护单元,在接收到延时输出信号使自身断开以断开车用供电电源的负载供电回路;未接收到延时输出信号时使自身未断开,以构成负载供电回路。该方案,通过对车用供电电源的电源电压进行检测,实现过压保护,保证不因车用供电电源的电源电压过压而损坏整车控制器VCU。


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

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


    Weitere Titelangaben:

    车用供电电源的过压保护装置、车辆及其过压保护方法


    Beteiligte:
    MENG FAN'AO (Autor:in) / KIL HWAN-KI (Autor:in) / LIANG SHANG (Autor:in) / LONG YUNXIANG (Autor:in) / WU SANGCHEN (Autor:in) / YUAN YIGE (Autor:in)

    Erscheinungsdatum :

    2023-02-03


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES




    Overvoltage protection circuit in vehicle

    Europäisches Patentamt | 2020

    Freier Zugriff

    Overvoltage protection circuit in vehicle

    SONG CHANG KYU | Europäisches Patentamt | 2020

    Freier Zugriff

    VEHICLE POWER SOURCE SYSTEM AND OVERVOLTAGE PROTECTION METHOD

    ZHANG PENG | Europäisches Patentamt | 2022

    Freier Zugriff