In electrical fault detection device (10) that is mounted on a vehicle and includes: energy storage unit (20) to be mounted in a state of being insulated from a chassis ground of the vehicle; first switch (MRp) inserted into positive wire (Lp); and second switch (MRm) inserted into negative wire (Lm), in order to suppress a total cost by not using an expensive component while securing detection accuracy, electrical fault detection device (10) further includes coupling capacitor (Cc), AC output unit (13a), first voltage measurement unit (13b), first determination unit (13c), voltage dividing circuit (11), second voltage measurement unit (12), and second determination unit (13d). Voltage dividing circuit (11) is connected between positive wire (Lp) between first switch (MRp) and one end of load (2) and negative wire (Lm) between second switch (MRm) and the other end of load (2).


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    Title :

    ELECTRICAL FAULT DETECTION DEVICE AND VEHICLE POWER SUPPLY SYSTEM


    Additional title:

    VORRICHTUNG ZUR ERKENNUNG ELEKTRISCHER FEHLER UND SYSTEM ZUR STROMVERSORGUNG EINES FAHRZEUGS
    DISPOSITIF DE DÉTECTION DE DÉFAILLANCE ÉLECTRIQUE ET SYSTÈME D'ALIMENTATION ÉLECTRIQUE DE VÉHICULE


    Contributors:

    Publication date :

    2022-04-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



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