In battery voltage monitoring ICs for measuring voltages of unit cells of an assembled battery, communication with a system control unit is realized in consideration of fail-safe. The system control unit and the battery voltage monitoring ICs are coupled to each other by a communication path using a daisy chain. Each battery voltage monitoring IC has a placement setting pin designating, by a binary code, a unit cell group to which the IC is coupled, in the unit cell groups. When it is detected that the Hamming distance between the code indicative of coupling to a group of the highest potential or a group of the lowest potential and a state actually set in the placement setting pin is 1, some failure such as line disconnection, short-circuit, or the like in the placement setting pins is detected, and the communication path is interrupted.


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    Titel :

    Semiconductor device and battery voltage monitoring device


    Beteiligte:
    FUKUTE AKIKO (Autor:in) / ENOMOTO RYOSUKE (Autor:in) / KIMURA JUNKO (Autor:in) / UKAI TOSHITAKA (Autor:in)

    Erscheinungsdatum :

    2017-02-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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 / H04Q Wähltechnik , SELECTING



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