Method and apparatus for contact detection in battery packs (100) are disclosed. A battery pack (100), comprising: at least a first battery cell (210-1) and a second battery cell (210-2), the first battery cell having a first electrode (C) and a second electrode (D), and the second battery cell having a third electrode (C) and a fourth electrode (D); a power bar (202b) for coupling the second electrode (D) of the first battery cell (210-1) to the third electrode (C) of the second battery cell (210-2); a communication wire (206b) for signal communication between the first battery cell and the second battery cell, wherein the first battery cell comprises a supervisor (212-1), which comprises a voltage detector (312-1) to measure a first voltage between the first electrode and the second electrode of the first battery cell in a first state, and to measure a second voltage between the first electrode of the first battery cell and the communication wire in a second state; and a digital circuit (326-1) to compute a voltage difference between the first voltage and the second voltage, and to indicate degraded contact of the power bar if the voltage difference is out of a predetermined threshold range. A battery cell and a method for monitoring a battery pack are also disclosed.


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    Title :

    METHOD AND APPARATUS FOR DETECTING FAULTY CONTACTS IN BATTERY PACKS


    Additional title:

    VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG VON FEHLERHAFTEN KONTAKTEN IN BATTERIEPACKS
    PROCÉDÉ ET APPAREIL POUR LA DÉTECTION DE DÉFAUTS DE CONTACT DANS LES BATTERIES


    Contributors:

    Publication date :

    2019-10-16


    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 / 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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