STORAGE BATTERY CAPACITY MEASUREMENT DEVICE

摘要

This storage battery capacity measurement device is provided in in-house equipment having a storage battery system connected to an internal wire. The storage battery system comprises a plurality of storage batteries connected in parallel to the internal wire. The storage battery capacity measurement device is configured so as to execute: a step in which one storage battery among the plurality of storage batteries is set as the measurement target storage battery and at least one storage battery other than the measurement target storage battery is set as the measurement support storage battery; a step in which the amount of electricity in the measurement target storage battery is discharged from an upper limit to a lower limit and the amount of discharged electricity is charged to the measurement support storage battery; and a step in which the discharge capacity of the measurement target storage battery is calculated on the basis of the cumulative current value that flows through the measurement target storage battery during discharge.