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 (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 of a device to be supplied with power) in a wireless power transmission device wherein a magnetic field is altered to supply power from a power supply module to a power-receiving module to which devices to be supplied with power (i.e., a stabilizing circuit, a charging circuit and a lithium-ion secondary battery) are connected, the value of a coupling coefficient between a power supply coil and a power supply resonator, and the value of a coupling coefficient between a power-receiving resonator and a power-receiving coil are each adjusted.

主权项

1. A method of adjusting a load fluctuation response of an input impedance in a wireless power transmission apparatus configured to cause variation in a magnetic field to supply power from a power-supplying module to a power-receiving module connected to a power-supplied electronic device which consumes the power, wherein
the power-supplying module and the power-receiving module each has at least one coil, and the load fluctuation response is adjusted by adjusting values of coupling coefficients between the coils arranged side-by-side, the load fluctuation response being an amount of variation in the input impedance of the wireless power transmission apparatus relative to a unit variation amount of a load impedance of the power-supplied electronic device.