The invention provides a battery management system, a battery pack, an electric vehicle, and a battery management method. The battery management system according to the present invention comprises: a sensing unit that detects a voltage, a current, and a pressure of a battery cell; a memory that stores first relationship data representing a relationship between the open circuit voltage and the SOC and second relationship data representing a relationship between the pressure and the SOC; and a control unit that determines a voltage value representing the detected voltage, a current value representing the detected current, and a pressure value representing the detected pressure, and determines an SOC estimation of the battery cell at each set time. The control unit compares the previous SOC estimate with the stationary section and performs at least one of (i) a first SOC estimation logic based on the voltage value, the current value, and the first relationship data, and (ii) a second SOC estimation logic based on the pressure value and the second relationship data, in order to determine a current SOC estimate.

    提供了一种电池管理系统、电池组、电动车辆以及电池管理方法。根据本发明的电池管理系统包括:感测单元,其检测电池单体的电压、电流和压力;存储器,其存储表示开路电压与SOC之间的关系的第一关系数据和表示压力与SOC之间的关系的第二关系数据;以及控制单元,其确定表示所检测的电压的电压值、表示所检测的电流的电流值以及表示所检测的压力的压力值,并且确定在每个设定时间处电池单体的SOC估计。控制单元将上一SOC估计与平稳区段进行比较,执行以下中的至少一个:(i)基于电压值、电流值以及第一关系数据的第一SOC估计逻辑,以及(ii)基于压力值和第二关系数据的第二SOC估计逻辑,以便确定当前SOC估计。


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    Title :

    Battery management system, battery pack, electric vehicle, and battery management method


    Additional title:

    电池管理系统、电池组、电动车辆以及电池管理方法


    Contributors:
    HONG KYUNG-SIK (author) / KIM HYUN-JIN (author) / PARK GI-SU (author) / AHN JI-HOON (author)

    Publication date :

    2024-10-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / 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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