A battery system can include a battery pack; a first main relay having a first end connected to a positive terminal of the battery pack and a second main relay having a first end connected to a negative terminal of the battery pack; a first control relay connected between the first main relay and a positive terminal of an inverter and a second control relay connected between the second main relay and a negative terminal of the inverter; a welding diagnosing circuit including a first resistor and a first photocoupler connected between the positive terminal of the battery pack and the negative terminal of the inverter and a second resistor and a second photocoupler connected between the negative terminal of the inverter and the negative terminal of the battery pack; and a battery management system (BMS) configured to drive the first and second photocouplers to diagnose welding of the second control relay.


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    Title :

    RELAY FUSION DIAGNOSIS CIRCUIT AND RELAY FUSION DIAGNOSIS METHOD


    Additional title:

    RELAISFUSIONSDIAGNOSESCHALTUNG UND RELAISFUSIONSDIAGNOSEVERFAHREN
    CIRCUIT DE DIAGNOSTIC PAR FUSION DE RELAIS ET PROCÉDÉ DE DIAGNOSTIC PAR FUSION DE RELAIS


    Contributors:
    KIM SEMIN (author)

    Publication date :

    2024-10-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



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