| 摘要 |
PROBLEM TO BE SOLVED: To provide a charge/discharge system capable of stably supplying a storage battery and an electric vehicle with power generated by a photovoltaic power generation with minimum control.SOLUTION: A charge/discharge system 1 comprises: a grid interconnected power supply 3 connected to a commercial AC power supply 2; a plurality of bidirectional power supplies 32 connected to storage batteries 33 respectively; a DC bus 31 for connecting the grid interconnected power supply 3 and the bidirectional power supplies 32; an external DC charger 35 connected to the DC bus 31; and a control unit 4. The charge/discharge system 1 is configured so that: a storage battery 33 having a charged amount lower than a defined amount is charged with DC power DC, when the DC power DC is supplied from the grid interconnected power supply 3 to the DC bus 31; and an electric vehicle 36 is charged by the external DC charger 35 to which power generated by photovoltaic power generation or the DC power DC stored in the storage battery 33 is discharged, when the electric vehicle 36 is connected to the external DC charger 35. |
