Management device of battery pack, power storage system, management method of battery pack, and management program of battery pack

Abstract

To provide a management device capable of appropriately correcting a deviation of SOC among a plurality of aqueous battery cells electrically connected in series in a battery pack, while realizing simplification of a system configuration.SOLUTION: A management device for managing a battery pack in which a plurality of aqueous battery cells are electrically connected in series is provided according to the embodiment. A control part in the management device charges the battery pack in constant current until a voltage of the battery pack becomes a reference voltage value, by at least corresponding to the fact that a SOC difference value between a maximum SOC cell whose SOC is highest and a minimum SOC cell whose SOC is lowest becomes a reference difference value or more, according to the plurality of aqueous battery cells constituting the battery pack. The control part charges the battery pack in constant voltage at the reference voltage value, by corresponding to the fact that the voltage of the battery pack reaches the reference voltage value via charging at the constant current.SELECTED DRAWING: Figure 3

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