| 摘要 |
PROBLEM TO BE SOLVED: To provide a full-charge-capacity degradation degree estimation apparatus capable of realizing highly accurate estimation of the degradation degree of a full charge capacity of a secondary battery by taking account of a metal elution amount (deposition amount).SOLUTION: A full-charge-capacity degradation degree estimation apparatus provided by the present invention comprises a secondary battery that can be charged and discharged, and estimates the degradation degree of a full charge capacity from at least one of an integrated value of current-carrying amounts by charging/discharging of the secondary battery and the battery temperature of the secondary battery, as well as a state of charge (SOC). The degradation degree estimation apparatus calculates an accumulated metal elution amount at a positive electrode or an accumulated metal deposition amount at a negative electrode on the basis of a battery temperature history, and calculates the degradation degree so as to be higher when the accumulated metal elution amount or the accumulated metal deposition amount is large than when the accumulated metal elution amount or the accumulated metal deposition amount is small.SELECTED DRAWING: Figure 4 |
