CHARGE AND DISCHARGE SYSTEM

To provide a charge and discharge system that is of a simple configuration and can use a secondary battery of an electric vehicle and the like as a power supply.SOLUTION: A charge and discharge system comprises: a power conditioner; a plurality of DC power transformers and a power transformer that are connected to the power conditioner; a vehicle connection portion which is connected to each DC power transformer and to which a vehicle having a secondary battery is connected; a load connection portion which is connected to the power transformer and to which a load is connected; and a control unit that controls the DC power transformers. The control unit includes: inter-vehicle charging means for controlling the DC power transformers so as to supply electric power from the secondary batteries of one or more vehicles to the secondary batteries of one or more other vehicles; load power supply means for controlling the DC power transformers so as to supply electric power to the load from the secondary battery of the one or more vehicles; and vehicle switching means for switching the vehicle as a power source supplying electric power to other vehicles or the load to another vehicle.SELECTED DRAWING: Figure 1 【課題】簡易な構成であって電気自動車などの蓄電池を電源とすることができる充放電システムを提供する。【解決手段】パワーコンディショナと、パワーコンディショナに接続された複数の直流変換器および変圧器と、各直流変換器に接続されたものであって蓄電池を備える車両が接続される車両接続部と、変圧器に接続されたものであって負荷が接続される負荷接続部と、直流変換器を制御する制御部を備えるものであって、制御部は、１台または複数台の車両の蓄電池から他の１台または複数台の車両の蓄電池へ電力を供給するように直流変換器を制御する車両間充電手段と、１台または複数台の車両の蓄電池から負荷へ電力を供給するように直流変換器を制御する負荷給電手段と、他の車両または負荷へ電力を供給する給電元の車両を別の車両に切り替える車両切替手段を有する。【選択図】図１