DETERIORATION ESTIMATION DEVICE, DETERIORATION ESTIMATION METHOD, AND COMPUTER PROGRAM

To provide a deterioration estimation device, a deterioration estimation method, and a computer program, capable of estimating the deterioration of a power storage device at the time of shutdown.SOLUTION: A deterioration estimation unit 4 includes a first deriving unit 41 for deriving a first SOC of a power storage device 3 at the time of suspension of the use of the device 3, an acquiring unit 41 for acquiring temperature information during the period of suspension, a second deriving unit 41 for deriving a second SOC before resuming use of the power storage device 3, a third deriving unit 41 for deriving a self-discharge rate on the basis of the first SOC, the second SOC, the temperature information, and the period of suspension, and an estimation unit 41 for estimating the degree of deterioration of the power storage device 3 on the basis of the derived self-discharge rate.SELECTED DRAWING: Figure 2 【課題】停止時に蓄電素子の劣化を推定することが可能な劣化推定装置、劣化推定方法、及びコンピュータプログラムを提供する。【解決手段】劣化推定装置４は、蓄電素子３の使用停止時の第１ＳＯＣを導出する第１導出部４１と、停止期間中の温度情報を取得する取得部４１と、蓄電素子３の使用再開前の第２ＳＯＣを導出する第２導出部４１と、前記第１ＳＯＣ、前記第２ＳＯＣ、前記温度情報、及び前記停止期間に基づいて、自己放電率を導出する第３導出部４１と、導出した自己放電率に基づいて、蓄電素子３の劣化の度合を推定する推定部４１とを備える。【選択図】図２