Patent ID: 9124099
Filing Date: 2015-09-01
Classification: H02J

Abstract:
1. A storage battery system comprising: a storage battery which is charged with power supplied from at least one of a commercial power system and an independent power source, and supplies the charged power to a plurality of electric devices or the commercial power system; a remaining level detection device which detects a remaining level of the storage battery; a power outage detection device which detects whether or not the commercial power system is in a power outage state; and a control unit which switches, based on the detection result by the remaining level detection device and the power outage detection device, an operation state of the storage battery to charging or discharging, and switches connection destinations of the storage battery, wherein, when the commercial power system is not in a power outage state, the control unit supplies power from the storage battery to the electric devices or the commercial power system only if the remaining level of the storage battery exceeds a reference value, and the reference value is defined based on the power required to be supplied to the electric devices while the commercial power system breaks down, wherein each of the electric devices is classified into a specific device which needs to operate during at least an operation time set individually while the commercial power system breaks down, and a non-specific device which needs not to operate while the commercial power system breaks down, and the reference value is determined based on the power required to operate each of the specific devices included in the electric devices during the operation time, and wherein each of the specific devices has memory unit which stores predetermined information including at least information of the operation time and information of its own power consumption, and the control unit acquires the predetermined information stored in each of the specific devices by communicating with each of the specific devices, and calculates the reference value based on the acquired predetermined information.