Wireless power supply system, wireless power transmitting device, and wireless power receiving device
First Claim
1. A wireless power supply system, comprising:
- a wireless power transmitting device configured to include a power transmitting resonant circuit having a predetermined resonant frequency characteristic, and to transmit electric power wirelessly via the power transmitting resonant circuit, the power transmitting resonant circuit including a power transmitting coil;
a plurality of wireless power receiving devices configured to include respective power receiving resonant circuits having a same resonant frequency characteristic as the power transmitting resonant circuit, and to wirelessly receive electric power from the wireless power transmitting device by a magnetic field resonance mode arising as a result of the power receiving resonant circuit tuning to a resonant frequency of the power transmitting resonant circuit, the power receiving resonant circuits each including a power receiving coil; and
a power receiving control unit included in each of the wireless power receiving devices and configured to make the power receiving resonant circuit into a closed circuit by closing a switch connected to the power receiving coil in response to a charge request being sent to the wireless power transmitting device, whereinthe wireless power transmitting device generates the magnetic field resonance mode between the wireless power transmitting device and a wireless power receiving device that has received the charge request from among the plurality of the wireless power receiving devices.
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Accused Products
Abstract
A wireless power supply system includes: a wireless power transmitting device configured to include a variable resonant circuit having a variable-controllable resonant frequency characteristic, and to transmit electric power wirelessly via the variable resonant circuit; a power transmission control unit configured to variably control the resonant frequency characteristic of the variable resonant circuit; and a plurality of wireless power receiving devices configured to include respective unique resonant circuits having respective unique resonant frequency characteristics which are different to each other, and to wirelessly receive power from the wireless power transmitting device by a magnetic field resonance mode arising as a result of the unique resonant circuit tuning to a resonant frequency of the variable resonant circuit.
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Citations
4 Claims
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1. A wireless power supply system, comprising:
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a wireless power transmitting device configured to include a power transmitting resonant circuit having a predetermined resonant frequency characteristic, and to transmit electric power wirelessly via the power transmitting resonant circuit, the power transmitting resonant circuit including a power transmitting coil; a plurality of wireless power receiving devices configured to include respective power receiving resonant circuits having a same resonant frequency characteristic as the power transmitting resonant circuit, and to wirelessly receive electric power from the wireless power transmitting device by a magnetic field resonance mode arising as a result of the power receiving resonant circuit tuning to a resonant frequency of the power transmitting resonant circuit, the power receiving resonant circuits each including a power receiving coil; and a power receiving control unit included in each of the wireless power receiving devices and configured to make the power receiving resonant circuit into a closed circuit by closing a switch connected to the power receiving coil in response to a charge request being sent to the wireless power transmitting device, wherein the wireless power transmitting device generates the magnetic field resonance mode between the wireless power transmitting device and a wireless power receiving device that has received the charge request from among the plurality of the wireless power receiving devices. - View Dependent Claims (2, 3, 4)
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Specification