To provide a technique capable of accurately estimating an SOC estimation value.SOLUTION: A method for correcting a state-of-charge (SOC) estimation value of a battery cell 12 estimated by a current integration method includes: a charging step of switching into constant voltage charging when the voltage value of the battery cell 12 reaches a predetermined voltage value; a determination step of determining the correction value of the estimation value based on an amount of electricity charged during a period from the start of charging of the battery cell 12 until the current value of charging current drops to a predetermined threshold I_thr; and a correction step of correcting the estimation value based on a correction value determined in the determination step.SELECTED DRAWING: Figure 12
【課題】SOCの推定値を精度よく補正すること。【解決手段】電流積算法によって推定された電池セル12の充電状態(SOC)の推定値の補正方法であって、電池セル12の電圧値が所定の電圧値に達すると定電圧充電に切り替える充電ステップと、電池セル12の充電が開始されてから充電電流の電流値が所定の閾値I_thrに低下するまでの期間に充電された電気量に基づいて推定値の補正値を決定する決定ステップと、決定ステップで決定した補正値に基づいて推定値を補正する補正ステップと、を含む、補正方法。【選択図】図12
METHOD FOR CORRECTING STATE-OF-CHARGE ESTIMATION VALUE OF POWER STORAGE ELEMENT, MANAGEMENT DEVICE OF POWER STORAGE ELEMENT, AND POWER STORAGE DEVICE
蓄電素子の充電状態推定値の補正方法、蓄電素子の管理装置、及び、蓄電装置
2021-03-01
Patent
Electronic Resource
Japanese
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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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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