NON-CONTACT CHARGING DEVICE, AND NON-CONTACT POWER SUPPLY SYSTEM USING SAME
First Claim
1. A non-contact power supply system comprising:
- a non-contact charging device that transmits electric power by magnetic coupling; and
a portable terminal device that receives electric power from the non-contact charging device in a contactless manner, the non-contact charging device and the portable terminal device each including a wireless communication unit for communication with each other, the portable terminal device including a battery that is charged by the non-contact charging device, andthe non-contact charging device comprising;
a wireless communication antenna coil that is used for wireless communication;
an electric power transmitting antenna coil part comprising a power supply coil and a resonance coil, and upon transmitting electricity, electric power is supplied from the power supply coil to the resonance coil to transmit electricity from the resonance coil to the portable terminal device; and
an adjustment circuit that is coupled to the power supply coil and adjusts sensitivity when wireless communication is performed.
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Accused Products
Abstract
A wide charging area and communication area are ensured in a non-contact power supply system with wireless communication.
The present invention includes a resonance coil, a wireless communication antenna coil, a power supply coil, and a sensitivity adjustment circuit coupled to the power supply coil. When electric power is supplied in a contactless manner, the power supply coil and the resonance coil are coupled electromagnetically and electric power supply from the resonance coil is performed by using a magnetic resonance method. When wireless communication is performed, the magnetic fluxes of the wireless communication antenna coil are coupled with those of the resonance coil and sensitivity is enhanced by the sensitivity adjustment circuit.
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Citations
9 Claims
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1. A non-contact power supply system comprising:
- a non-contact charging device that transmits electric power by magnetic coupling; and
a portable terminal device that receives electric power from the non-contact charging device in a contactless manner, the non-contact charging device and the portable terminal device each including a wireless communication unit for communication with each other, the portable terminal device including a battery that is charged by the non-contact charging device, andthe non-contact charging device comprising; a wireless communication antenna coil that is used for wireless communication; an electric power transmitting antenna coil part comprising a power supply coil and a resonance coil, and upon transmitting electricity, electric power is supplied from the power supply coil to the resonance coil to transmit electricity from the resonance coil to the portable terminal device; and an adjustment circuit that is coupled to the power supply coil and adjusts sensitivity when wireless communication is performed. - View Dependent Claims (2, 3, 4, 5, 6)
- a non-contact charging device that transmits electric power by magnetic coupling; and
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7. A non-contact charging device that performs data transmission with a portable terminal device and supplies electric power to the portable terminal device, the non-contact charging device comprising:
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a wireless communication unit that performs data transmission; a wireless communication antenna coil that is coupled to the wireless communication unit and used for the data transmission; a power supply coil; a resonance coil; a suppression circuit that is coupled to the wireless communication antenna coil and prevents a signal from the wireless communication antenna coil from being transferred to the wireless communication unit when electric power is supplied to the portable terminal device; and an adjustment circuit that is coupled to the power supply coil and controls communication sensitivity when the data transmission is performed, wherein the resonance coil forms magnetic fluxes in accordance with data to be transferred when data transmission is performed and forms magnetic fluxes in accordance with electric power to be transmitted when electric power is transmitted. - View Dependent Claims (8, 9)
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Specification