WIRELESS POWER TRANSMISSION DEVICE, METHOD FOR ADJUSTING LOAD FLUCTUATION RESPONSE OF INPUT IMPEDANCE IN WIRELESS POWER TRANSMISSION DEVICE, AND METHOD FOR MANUFACTURING WIRELESS POWER TRANSMISSION DEVICE

摘要

In order to adjust the load fluctuation response of an input impedance (Z_in) (i.e., a change in the value of an input impedance in a wireless power transmission device relative to the unit variation of a load impedance (Z₁) of a device to be supplied with power) in a wireless power transmission device (1) wherein a magnetic field is altered to supply power from a power supply module (2) to a power-receiving module (3) to which devices to be supplied with power (i.e., a stabilizing circuit (7), a charging circuit (8) and a lithium-ion secondary battery (9)) are connected, the value of a coupling coefficient (k₁₂) between a power supply coil (21) and a power supply resonator (22), and the value of a coupling coefficient (k₃₄) between a power-receiving resonator (32) and a power-receiving coil (31) are each adjusted.