To estimate a charging rate of a battery with improved accuracy.SOLUTION: A charging rate estimation device 1 has: a determination unit 121 that determines whether an amount of use of a vehicle Ve per unit time is equal to or higher than a threshold A, and an estimation unit 122. When the determination unit 121 determines that the amount of use of the vehicle Ve per unit time is lower than a threshold Cth, the estimation unit 122 estimates a charging rate of a battery B using a voltage of the battery B by a first estimation method, or when the determination unit 121 determines that the amount of use of the vehicle Ve per unit time is equal to or higher than the threshold A, the estimation unit 122 estimates a charging rate of the battery B using a voltage of the battery B by a second estimation method at a higher frequency than by the first estimation method.SELECTED DRAWING: Figure 1

    【課題】電池の充電率の推定精度を向上させる。【解決手段】車両Veの単位時間あたりの使用量が閾値A以上か否かを判定する判定部121と、判定部121により車両Veの単位時間あたりの使用量が閾値Cth未満と判定された場合、第1の推定方法により電池Bの電圧を用いて電池Bの充電率を推定し、判定部121により車両Veの単位時間あたりの使用量が閾値A以上と判定された場合、第1の推定方法よりも高い頻度で第2の推定方法により電池Bの電圧を用いて電池Bの充電率を推定する推定部122とを備えて充電率推定装置1を構成する。【選択図】図1


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    Title :

    CHARGING RATE ESTIMATION DEVICE


    Additional title:

    充電率推定装置


    Contributors:

    Publication date :

    2021-02-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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




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