The embodiment of the invention belongs to the field of new energy vehicles and discloses an abnormality protection device for the operation of an electric vehicle. The device comprises an inner sidevoltage detection module, an outer side voltage detection module, a judgment module and a control module; the inner side voltage detection module is used for detecting the voltage of the first end ofa main positive relay in the high-voltage loop of the electric vehicle and inputting the voltage of the first end of the main positive relay to the judgment module; the outer side voltage detection module is used for detecting and obtaining the voltage of the second end of the main positive relay and inputting the voltage of the second end of the main positive relay to the judgment module; the judgment module is used for outputting a switching-off indication signal to the control module after identifying that the abnormal switching off of the main positive relay according to the voltage of thefirst end of the main positive relay and the voltage of the second end of the main positive relay; and the control module is used for switching off the coil drive of the main positive relay accordingto the switching-off indication signal. Therefore, the situation that the relay is switched on again after being abnormally switched off is avoided, the safe operation of the whole vehicle is guaranteed, and the failure rate of the vehicle is reduced.

    本发明实施例涉及新能源汽车领域,公开了一种电动车运行中的异常保护装置。该装置包括:内侧电压检测模块,用于检测获得电动车高压回路中的主正继电器第一端的电压,并将主正继电器第一端的电压输入至判断模块;外侧电压检测模块,用于检测获得主正继电器第二端的电压,并将主正继电器第二端的电压输入至判断模块;判断模块,用于根据主正继电器第一端的电压和主正继电器第二端的电压,识别主正继电器出现异常断开后,向控制模块输出断开指示信号;该控制模块,用于根据断开指示信号断开主正继电器的线圈驱动,避免了由于继电器异常断开后再次闭合情况的发生,保证在整车的安全运行以及减少了故障率。


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    Titel :

    Abnormality protection device for operation of electric vehicle


    Weitere Titelangaben:

    一种电动车运行中的异常保护装置


    Beteiligte:
    MA XING (Autor:in) / HUANG XUEWEN (Autor:in)

    Erscheinungsdatum :

    2020-06-23


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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