STORAGE BATTERY DEVICE AND CHARGING CONTROL METHOD

摘要

Provided is a storage battery device whose battery life can be prolonged further. Storage battery device 30 having a plurality of storage battery cells 31-1 to 31-n connected in series includes monitoring unit 33 that measures voltages via the terminals of the respective storage battery cells, and obtains degradation information indicating the degraded states of the plurality of storage battery cells based on the voltages, selection unit 34 that selects at least one of the plurality of storage battery cells, power supply unit 32 that supplies power to the storage battery cell selected by selection unit 34 to charge the storage battery cell, and control unit 35 that switches, based on the degradation information obtained by monitoring unit 33, a storage battery cell to be selected by selection unit 34, and adjusts the power supplied from power supply unit 32.