본 발명은, 배터리의 SOH(State of Health)를 추정하는 방법 및 그 방법을 제공하는 배터리 시스템에 관한 것으로, 본 발명의 배터리 시스템은, 복수의 배터리 셀을 포함하는 배터리, 그리고 상기 배터리와 외부 장치 간 통전이 시작되기 전 소정의 제1 시점에서 산출된 제1 충전상태(State of Charge, SOC)와 상기 통전이 종료된 제2 시점에서 산출된 제2 충전상태 간의 차이값인 제1 충전상태 변화량, 및 상기 제1 충전상태와 상기 제2 시점으로부터 소정의 시간이 경과한 제3 시점에서 산출된 제3 충전상태 간의 차이값인 제2 충전상태 변화량을 산출하는 BMS(Battery Management System)을 포함하고, 상기 BMS는 상기 제1 충전상태 변화량 및 상기 제2 충전상태 변화량에 기초하여 상기 배터리의 건강 상태(State of Health, SOH)를 추정한다.

    The present invention relates to a battery state estimation method and a battery system providing same. The battery system of the present invention comprises: a battery including a plurality of battery cells; and a battery management system (BMS) that calculates a first variation of state of charge (SOC), which is the difference between a first SOC calculated at a first predetermined time before the beginning of electrical conduction between the battery and an external device and a second SOC calculated at a second time when the electrical conduction is ended, and a second variation of SOC, which is the difference between the first SOC and a third SOC calculated at a third time when a predetermined time elapses from the second time, wherein the BMS estimates a state of health (SOH) of the battery on the basis of the first variation of SOC and the second variation of SOC.


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    Title :

    BATTERY STATE PREDICTION METHOD AND BATTERY SYSTEM PROVIDING THE SAME


    Additional title:

    배터리 상태 추정 방법 및 그 방법을 제공하는 배터리 시스템


    Contributors:
    CHOI GEON (author)

    Publication date :

    2024-10-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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