Provided is a battery state detection device suitable for detecting a state of a battery mounted on a vehicle. A μCOM uses a first capacitor to measure a first sample of battery voltage, and after a predetermined standby time has elapsed, executes sample hold processing using the second capacitor for performing the second sample hold of the battery voltage. The μCOM detects the state of the battery based on the output of the differential amplifier when a condition is satisfied that the battery current is constant during both the first sample hold and the second sample hold and the battery current fluctuates during the standby time.


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    Title :

    Battery state detection device


    Contributors:
    FUJII HIRONAO (author) / WANG JIAN (author) / MATSUMOTO KEI (author)

    Publication date :

    2020-04-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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