A battery management system according to the present invention includes: a sensing unit that generates sensing signals representing voltage and current of the battery; a memory unit storing overvoltage management information including a reference peak value and a reference peak voltage value; and a control unit for instructing the charging circuit to charge the first constant current using the maximum allowable current rate when the reference peak value is greater than or equal to the threshold peak value in response to the charging request. The control unit determines a first differential capacity curve representing a corresponding relationship between the voltage and differential capacity of the battery in a threshold voltage range, based on the sensing signals collected during the first constant current charging. The control unit determines a first main peak value and a first main peak voltage value representing differential capacitance and voltage of a first peak of the first differential capacitance curve, respectively. When the first main peak value is less than the critical peak value, the control unit updates the reference peak value and the reference peak voltage value to be the same as the first main peak value and the first main peak voltage value, respectively. Prior to starting the constant current charging, charging conditions for suppressing overvoltage are set.

    본 발명에 따른 배터리 관리 시스템은, 배터리의 전압 및 전류를 나타내는 센싱 신호를 생성하는 센싱부; 기준 피크값 및 기준 피크 전압값을 포함하는 과전압 관리 정보를 저장하는 메모리부; 및 충전 요청에 응답하여, 상기 기준 피크값이 임계 피크값 이상인 경우, 최대 허용 전류율을 이용한 제1 정전류 충전을 충전 회로에게 명령하는 제어부를 포함한다. 상기 제어부는, 상기 제1 정전류 충전 중에 수집된 상기 센싱 신호를 기초로, 임계 전압 범위에서의 상기 배터리의 전압과 미분 용량 간의 대응 관계를 나타내는 제1 미분 용량 커브를 결정한다. 상기 제어부는, 상기 제1 미분 용량 커브의 첫번째 피크의 미분 용량 및 전압 각각을 나타내는 제1 메인 피크값 및 제1 메인 피크 전압값을 결정한다. 상기 제어부는, 상기 제1 메인 피크값이 상기 임계 피크값 미만인 경우, 상기 기준 피크값 및 상기 기준 피크 전압값을 각각 상기 제1 메인 피크값 및 상기 제1 메인 피크 전압값과 동일하게 업데이트한다.


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    Titel :

    BATTERY MANAGEMENT SYSTEM BATTERY MANAGEMENT METHOD BATTERY PACK AND ELECTRIC VEHICLE


    Weitere Titelangaben:

    배터리 관리 시스템, 배터리 관리 방법, 배터리 팩 및 전기 차량


    Beteiligte:
    CHA A MING (Autor:in) / BAE YOON JUNG (Autor:in) / KIM DAE SOO (Autor:in) / LIM BO MI (Autor:in) / CHOI HYUN JUN (Autor:in)

    Erscheinungsdatum :

    2022-02-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

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



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