A battery monitoring apparatus that monitors a state of a battery for driving an electric motor includes: a voltage measuring unit configured to measure an analog voltage of each of battery cells; an A/D converter configured to convert the measured analog voltage of each of the battery cells to a digital voltage; a filter configured to perform filtering on the digital voltage converted by the A/D converter; and a control unit configured to receive a cell voltage from the A/D converter or from the filter depending on a change in battery cell voltage and/or a battery use time. The battery monitoring apparatus has advantages in that measurement precision can be increased while data rate is maintained by employing a hybrid filter which is a combination of an average filter and an IIR filter, so that the measurement precision can be increased with minimum additional cost.


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    Title :

    Battery monitoring apparatus and battery monitoring method


    Contributors:

    Publication date :

    2018-01-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    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



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