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US 10,097,052 B2Granted
Power feeding device, power feeding method, and power feeding system
AssigneeSony Corporation
InventorsYoichi Uramoto, Masayuki Tanaka
Life of this patent
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Abstract
Disclosed herein is a power feeding device including: power transmitting section which transmits electric power by way of a magnetic field; a set of first and second electrodes which are spaced from each other; a power supply which applies a voltage between the first and second electrodes; and a detector which detects whether foreign matter is present on the power transmitting section or not based on the voltage applied by the power supply.
Claims18
A power feeding device, comprising:
- a transmitting coil configured to transmit electric power wirelessly to a receiving coil of a power receiving device;
- a negative electrode and a positive electrode, wherein the negative electrode is at a threshold distance from the positive electrode;
- a power supply configured to apply a voltage between the negative electrode and the positive electrode;
- and
- a detector configured to detect presence of a foreign matter within a proximity of the transmitting coil, based on the voltage applied by the power supply, wherein the foreign matter is different from the power receiving device.
2 more elements
A power feeding method, comprising:
- transmitting electric power wirelessly, by a transmitting coil, to a receiving coil of a power receiving device;
- applying, by a power supply, a voltage between a negative electrode and a positive electrode, wherein the negative electrode is at a threshold distance from the positive electrode;
- and
- detecting, by a detector, presence of a foreign matter within a proximity of the transmitting coil, based on the voltage applied by the power supply, wherein the foreign matter is different from the power receiving device.
1 more element
Dependencies are inferred from the claim text.