| 摘要 |
This electric power supply device (2) is provided with: an electricity storage device (30); and a switch device (20) provided midway along a wiring line (L10) which connects together an indoor electric power system (41) and a commercial power system (3). The electricity storage device includes: a storage battery (32) which can be charged and discharged; an outlet plug (31) which can be connected to an outlet (C10) of the indoor electric power system; and a control unit (37) which controls the charging and discharging of the storage battery. If the switch device is in a connected state, the control unit charges the storage battery using electric power supplied from the commercial power system, and if the switch device is in a disconnected state, the electric power with which the storage battery has been charged is supplied to the indoor electric power system. |
