WIRELESS POWER TRANSMISSION DEVICE, WIRELESS POWER RECEPTION DEVICE, AND WIRELESS POWER TRANSMISSION and RECEPTION SYSTEM COMPRISING SAME

The present invention relates to a wireless power transmission device capable of stably operating without controlling the amount of power to prevent a circuit failure due to an overcurrent, when there is a change in the number of wireless power reception devices in a power transmission area of the wireless power transmission device, during the transmission of power using a magnetic resonance coupling method, a wireless power reception device, and a wireless power transmission and reception system including the wireless power transmission device and the wireless power reception device.