Wiress power transmission apparatus

A wireless power transmission apparatus is disclosed. According to an embodiment of the present invention, provided is a current collection device in a wireless power transmission system, comprising a secondary coil for generating an induced current by being induced by an electromagnetic field resonating at a predetermined frequency from a current supply device in the wireless power transmission system; an impedance matching unit connected to both ends of the secondary coil and coupled to the secondary coil to resonate at the same frequency as the predetermined frequency; and a rectification circuit connected to an output end of the impedance matching unit to rectify the induced current induced to the secondary coil so as to convert the current into a DC current.