WIRELESS POWER TRANSFER DEVICE, SUPPLIED-POWER CONTROL METHOD FOR WIRELESS POWER TRANSFER DEVICE, AND WIRELESS-POWER-TRANSFER-DEVICE MANUFACTURING METHOD
First Claim
1. A supply power control method for a wireless power transmission apparatus which supplies power from a power-supplying module including a power-supplying resonator to a power-receiving module including a power-receiving resonator, by changing a magnetic field,the power being controlled by setting an input impedance of the wireless power transmission apparatus by adjusting a resonance frequency of at least one of the power-supplying resonator and the power-receiving resonator.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless power transmission apparatus, a supply power control method, and a manufacturing method of the wireless power transmission apparatus, with which supply power is controlled by adjusting the resonance frequency of a coil of a power-supplying device and/or the resonance frequency of a coil of a power-receiving device while power transmission efficiency is maintained, are provided. As a supply power control method for a wireless power transmission apparatus 1 which supplies power from a power-supplying module including a power-supplying resonator to a power-receiving module including a power-receiving resonator by changing a magnetic field, power supplied to a power-supplied electronic device is controlled by setting an input impedance Zin of the wireless power transmission apparatus by adjusting the resonance frequency of at least one of a power-supplying resonator and a power-receiving resonator.
5 Citations
10 Claims
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1. A supply power control method for a wireless power transmission apparatus which supplies power from a power-supplying module including a power-supplying resonator to a power-receiving module including a power-receiving resonator, by changing a magnetic field,
the power being controlled by setting an input impedance of the wireless power transmission apparatus by adjusting a resonance frequency of at least one of the power-supplying resonator and the power-receiving resonator.
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10. A manufacturing method of a wireless power transmission apparatus which supplies power from a power-supplying module including a power-supplying resonator to a power-receiving module including a power-receiving resonator, by changing a magnetic field,
either a transmission characteristic relative to a driving frequency of the power supplied to the power-supplying module or a coupling coefficient between the power-supplying resonator and the power-receiving resonator when a resonance frequency of the power-supplying resonator is matched with a resonance frequency of the power-receiving resonator being set as a reference value for determining the power transmission efficiency, and the power being controlled by setting the input impedance of the wireless power transmission apparatus by adjusting the resonance frequency of at least one of the power-supplying resonator and the power-receiving resonator within a desired range including the reference value.
Specification