| 摘要 |
<p>Provided is a degradation state estimation method that can further suppress degradation of a secondary battery resulting from processing for estimating the degradation state. The degradation state estimation method, which estimates the degradation state of a secondary battery (84), includes: a control step for performing current control for flowing a current to the secondary battery; a measurement step for acquiring, as measurement information, at least the voltage value of the secondary battery when the current was flowed to the secondary battery; and an estimation step for estimating the degradation state of the secondary battery on the basis of the measurement information obtained in the measurement step and a model for estimating the degradation state of secondary batteries. In the current control, the current value of the current and/or the sustaining time of sustaining a predetermined current value is determined in accordance with a provisional degradation state of the secondary battery.</p> |
