RELAY ADAPTER AND CHARGING SYSTEM

To provide a relay adapter and a charging system, which supply power to an electric vehicle while suppressing an influence upon the use of an electric apparatus to which power is supplied from a power distribution board.SOLUTION: A relay adapter 3 is electrically connected between a charger 2 and an electric vehicle 200 in a charge path S through which power is supplied from a power distribution board 100 to the electric vehicle 200 via the charger 2. The relay adapter 3 includes: a communication unit 33 (current value acquisition unit) which acquires a main line current value Im flowing through the main line of the power distribution board 100; and an adapter control unit 37 which, based on the main line current value Im, sets a setting current value Ic at the supply of power to the electric vehicle 200 through the charge path S.SELECTED DRAWING: Figure 3 【課題】配電盤から電力が供給される電気機器の使用に対する影響を与えることを抑制しつつ、電動車両に電力を供給する中継アダプタおよび充電システムを提供する。【解決手段】充電装置２を介して配電盤１００から電力を電動車両２００に供給する充電経路Ｓのうち、充電装置２と電動車両２００との間に電気的に接続される中継アダプタ３であって、配電盤１００の幹線の幹線電流値Ｉｍを取得する通信部３３（電流値取得部）と、幹線電流値Ｉｍに基づいて充電経路Ｓによる電動車両２００に対する電力供給における設定電流値Ｉｃを設定するアダプタ制御部３７とを備える。【選択図】図３