A power cutoff device includes a relay unit including a switch having a connecting state and a cutoff state, a cutoff unit connected in series to the switch, a current detector to detect an object current flowing through the cutoff unit, and a controller to control the relay unit and the cutoff unit. The cutoff unit has a connecting state and an irreversible cutoff state. The controller obtains a changing rate of the object current with respect to time. The controller causes the switch to be in the connecting state and causes the cutoff unit to be in the connecting state if determining that the changing rate is not greater than a changing-rate threshold. The controller causes the relay unit to be in the cutoff state and cause the cutoff unit to be in the irreversible cutoff state if determining that the changing rate is greater than the changing-rate threshold.


    Access

    Download


    Export, share and cite



    Title :

    Power cutoff device


    Contributors:

    Publication date :

    2025-01-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    POWER CUTOFF DEVICE

    HIROBE TAKASHI / OKAMOTO TATSUYA / KAZAMA SHUN | European Patent Office | 2022

    Free access

    POWER CUTOFF DEVICE

    HIROBE TAKASHI / OKAMOTO TATSUYA / KAZAMA SHUN | European Patent Office | 2024

    Free access

    POWER CUTOFF DEVICE

    HIROBE TAKASHI / OKAMOTO TATSUYA / KAZAMA SHUN | European Patent Office | 2021

    Free access

    VEHICLE BATTERY POWER CUTOFF DEVICE AND VEHICLE BATTERY POWER CUTOFF METHOD

    LEE YOUNG JONG | European Patent Office | 2015

    Free access

    CUTOFF DEVICE FOR VEHICLE AND CUTOFF METHOD

    IWAKI HIDEKI / SAITO SHINYA / FURUKAWA MIMA et al. | European Patent Office | 2024

    Free access