Power reception device, power transmission device, and power transmission system
First Claim
1. A power reception device comprising:
- a feeding coil for wireless data communication;
a wireless communication circuit that includes a wireless IC chip and a feeding circuit configured to transmit and receive high frequency signals via the feeding coil;
a first electrode configured to be electrically field-coupled with a power transmission device;
a conductor member configured as a booster antenna magnetically field-coupled with the feeding coil during wireless data communication with the power transmission device and configured as a second electrode electrically field-coupled with the power transmission device when power is received from the power transmission device; and
a power supply circuit coupled to the first electrode and the conductor member and configured to supply power to a load when the first electrode and the conductor member are electric field-coupled to the power transmission device.
1 Assignment
0 Petitions
Accused Products
Abstract
An active electrode and a passive electrode are electrically field-coupled with an active electrode and a passive electrode provided in a power transmission device, respectively. Power in a high frequency voltage excited on the active electrode and the passive electrode is supplied to a mobile unit via a step-down transformer, a rectification smoothing circuit, and a DC-DC converter. A CPU turns off switches when wireless communication is carried out. The passive electrode functions as a booster antenna that is magnetically field-coupled with an antenna coil. A high frequency signal outputted from an RF circuit is transmitted via the antenna coil and the passive electrode, and a high frequency signal transmitted from the power transmission circuit is inputted, via the passive electrode and the antenna coil, to the RF circuit.
8 Citations
11 Claims
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1. A power reception device comprising:
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a feeding coil for wireless data communication; a wireless communication circuit that includes a wireless IC chip and a feeding circuit configured to transmit and receive high frequency signals via the feeding coil; a first electrode configured to be electrically field-coupled with a power transmission device; a conductor member configured as a booster antenna magnetically field-coupled with the feeding coil during wireless data communication with the power transmission device and configured as a second electrode electrically field-coupled with the power transmission device when power is received from the power transmission device; and a power supply circuit coupled to the first electrode and the conductor member and configured to supply power to a load when the first electrode and the conductor member are electric field-coupled to the power transmission device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power transmission system comprising:
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a power transmission device configured to transmit an AC voltage by electric field coupling; and a power reception device configure to receive an AC voltage transmitted from the power transmission device by electric field coupling, the power reception device including; a feeding coil for wireless data communication; a wireless communication circuit that includes a wireless IC chip and a feeding circuit configured to transmit and receive high frequency signals via the feeding coil; a first electrode configured to be electrically field-coupled with the power transmission device; a conductor member configured as a booster antenna magnetically field-coupled with the feeding coil during wireless data communication with the power transmission device and configured as a second electrode electrically field-coupled with the power transmission device when power is received from the power transmission device; and a power supply circuit coupled to the first electrode and the conductor member and configured to supply power to a load when the first electrode and the conductor member are electric field-coupled to the power transmission device. - View Dependent Claims (10, 11)
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Specification