| 摘要 |
A storage battery system, includes a determining unit that compares a degraded state of a plurality of battery cells estimated by an estimating unit with a first predetermined degraded state to determine whether to exchange the battery cell; a calculating unit that calculates an evaluation value to evaluate a health state of a plurality of battery-cell arrays based on a degraded state of the plurality battery cells; and a control unit that controls a first connection unit connected to a degraded battery cell which is determined that exchange is needed, so as to exchange the degraded battery cell with a battery cell different from the degraded battery cell in a direction where an evaluation value becomes equal to or larger than a predetermined threshold.
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