WIRELESS POWER TRANSMISSION DEVICE CAPABLE OF FORMING MAGNETIC FIELD SPACE, AND MAGNETIC FIELD SPACE FORMATION METHOD
First Claim
1. A wireless power transmission apparatus configured to supply power from a power-supplying module comprising at least a power-supplying resonator to a power-receiving module comprising at least a power-receiving resonator, by means of a resonance phenomenon, whereinsetting is carried out so that a transmission characteristic with respect to the power-source frequency of the power, of the power-supplying resonator and the power-receiving resonator, has two peak bands;
- andthe power-source frequency of the power to be supplied to the power-supplying module is set to a power-source frequency band corresponding to any of the two peak bands of the transmission characteristic, therebyforming a magnetic field space nearby the power-supplying resonator and the power-receiving resonator, the magnetic field space having a magnetic field strength smaller than a strength of a surrounding magnetic field.
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Accused Products
Abstract
A wireless power transmission device supplies power by means of a resonance phenomenon, from a power supply module equipped with at least a power-supply resonator to a power-receiving module equipped with at least a power-receiving resonator. For the power-supply resonator and the power-receiving resonator, a value for a transmission characteristic of a power source frequency for power is set so as to have two peak bands, and By setting the power source frequency for the power supplied to the power supply module to the power source frequency band corresponding to one of the two peak bands of the transmission characteristic, magnetic field spaces having a magnetic field strength less than the surrounding magnetic field strength are formed in the area near the power-supply resonator and the power-receiving resonator.
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Citations
8 Claims
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1. A wireless power transmission apparatus configured to supply power from a power-supplying module comprising at least a power-supplying resonator to a power-receiving module comprising at least a power-receiving resonator, by means of a resonance phenomenon, wherein
setting is carried out so that a transmission characteristic with respect to the power-source frequency of the power, of the power-supplying resonator and the power-receiving resonator, has two peak bands; - and
the power-source frequency of the power to be supplied to the power-supplying module is set to a power-source frequency band corresponding to any of the two peak bands of the transmission characteristic, thereby forming a magnetic field space nearby the power-supplying resonator and the power-receiving resonator, the magnetic field space having a magnetic field strength smaller than a strength of a surrounding magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of forming a magnetic field space in a wireless power transmission apparatus configured to supply power from a power-supplying module comprising at least a power-supplying resonator to a power-receiving module comprising at least a power-receiving resonator, by means of a resonance phenomenon, wherein
setting is carried out so that a transmission characteristic with respect to the power-source frequency of the power, of the power-supplying resonator and the power-receiving resonator, has two peak bands; - and
the power-source frequency of the power to be supplied to the power-supplying module is set to a power-source frequency band corresponding to any of the two peak bands of the transmission characteristic, thereby forming a magnetic field space between the power-supplying resonator and the power-receiving resonator, the magnetic field space having a magnetic field strength smaller than a strength of a surrounding magnetic field.
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Specification