STORAGE BATTERY DEVICE, CONTROL METHOD THEREFOR, AND CONTROL PROGRAM

摘要

PROBLEM TO BE SOLVED: To connect more battery units with main circuit for starting even when a potential difference occurs between battery units.

SOLUTION: A storage battery device includes a plurality of battery pack groups and a plurality of magnetic contactors that corresponds to each of the battery pack groups and electrically connect the corresponding battery back group with an output power supply line. Connection control means determines the corresponding battery pack group as a connection target when a voltage difference between voltages of the battery pack group and the output power supply line is not more than a predetermined voltage and connects the battery pack group with the output power supply line through the corresponding magnetic contactor.

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