| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply system that uses one storage battery, can avoid inefficiency even when performing simultaneous charge/discharge of the storage battery, and can suppress deterioration of the storage battery.SOLUTION: A power supply system comprises: a photovoltaic power generation unit 6; a storage battery 5; and a power conditioner 8 capable of supplying power from the photovoltaic power generation unit 6 and power from the storage battery 5 to a load. The power conditioner 8 comprises: a first relay 14 disposed on a first electric path 21 for connecting the photovoltaic power generation unit 6 with the load; a second relay 15 disposed on a second electric path 22 that is an electric path for connecting the photovoltaic power generation unit 6 with the storage battery 5 and branches from the first electric path 21 at a position nearer to the photovoltaic power generation unit 6 than the first relay 14; and a third relay 16 disposed on a third electric path 23 that is an electric path for connecting the storage battery 5 with the load and branches from the first electric path 21 at a position nearer to the load than the first relay 14. |
