PROBLEM TO BE SOLVED: To provide an internal resistance calculation device which can accurately calculate an internal resistance even if there is a rapid change in a current or a voltage.SOLUTION: The present invention relates to an internal resistance calculation device for calculating the internal resistance of a secondary battery connected to a plurality of cells. The internal resistance calculation device includes: a current measuring unit for measuring a current of a secondary battery; a cell voltage measuring unit for measuring the voltage of each cell; a total voltage acquisition unit for measuring and acquiring the total voltage of the secondary battery; and an internal resistance calculation unit for calculating the internal voltage of the secondary battery at a predetermined timing on the basis of the current measured by the current measuring unit and the total voltage acquired by the total voltage acquisition unit.SELECTED DRAWING: Figure 2

    【課題】電流および電圧が急激に変化する場合であっても、高精度に内部抵抗を算出することのできる内部抵抗算出装置を提供する。【解決手段】複数のセルが接続された二次電池の内部抵抗を算出する内部抵抗算出装置であって、二次電池の電流を計測する電流計測部と、各セルの電圧を計測するセル電圧計測部と、二次電池の総電圧を計測することにより、当該総電圧を取得する総電圧取得部と、所定のタイミングに従って、電流計測部が計測した電流と、総電圧取得部が取得した総電圧とに基づいて、二次電池の内部抵抗を算出する内部抵抗算出部とを備える。【選択図】図2


    Access

    Download


    Export, share and cite



    Title :

    INTERNAL RESISTANCE CALCULATION DEVICE, METHOD FOR CALCULATING INTERNAL RESISTANCE, AND INTERNAL RESISTANCE CALCULATION PROGRAM


    Additional title:

    内部抵抗算出装置、内部抵抗算出方法および内部抵抗算出プログラム


    Contributors:

    Publication date :

    2018-06-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



    Internal resistance calculating device

    SYOUDA TAKAHIRO / TAKAGI YOUKO | European Patent Office | 2018

    Free access

    INTERNAL RESISTANCE CALCULATING DEVICE

    SYOUDA TAKAHIRO / TAKAGI YOUKO | European Patent Office | 2017

    Free access

    INTERNAL-LOAD CALCULATION APPARATUS AND METHOD OF CALCULATING INTERNAL LOAD

    NAKANO TAKUYA | European Patent Office | 2021

    Free access

    Internal load calculation device and internal load calculation method

    NAKANO TAKUYA | European Patent Office | 2021

    Free access

    New energy automobile power battery internal resistance calculation and prediction method

    SUN TAO / ZHANG FANG / ZHENG YUEJIU et al. | European Patent Office | 2023

    Free access