DETECTING DEVICE, POWER SUPPLY SYSTEM, AND DETECTING DEVICE CONTROL METHOD
First Claim
1. A detecting device comprising:
- a measurement coil made up ofa first partial coil to which current in a particular direction is induced by a magnetic field to be supplied to a power reception coil configured to receive power,a second partial coil to which the current in the particular direction is induced by the magnetic field, anda third partial coil, which is disposed between the first and second partial coils, to which current in the opposite direction of the particular direction is induced by the magnetic field;
a measurement unit configured to measure the voltage of the measurement coil as measurement coil voltage; and
a foreign object detecting unit configured to detect a foreign object within the magnetic field based on the measurement coil voltage.
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Accused Products
Abstract
A detecting device includes: a measurement coil made up of a first partial coil to which current in a particular direction is induced by a magnetic field to be supplied to a power reception coil configured to receive power, a second partial coil to which the current in the particular direction is induced by the magnetic field, and a third partial coil, which is disposed between the first and second partial coils, to which current in the opposite direction of the particular direction is induced by the magnetic field; a measurement unit configured to measure the voltage of the measurement coil as measurement coil voltage; and a foreign object detecting unit configured to detect a foreign object within the magnetic field based on the measurement coil voltage.
29 Citations
15 Claims
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1. A detecting device comprising:
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a measurement coil made up of a first partial coil to which current in a particular direction is induced by a magnetic field to be supplied to a power reception coil configured to receive power, a second partial coil to which the current in the particular direction is induced by the magnetic field, and a third partial coil, which is disposed between the first and second partial coils, to which current in the opposite direction of the particular direction is induced by the magnetic field; a measurement unit configured to measure the voltage of the measurement coil as measurement coil voltage; and a foreign object detecting unit configured to detect a foreign object within the magnetic field based on the measurement coil voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A detecting device comprising:
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a measurement coil made up of a first partial coil to which current in a particular direction is induced by a magnetic field that a power supply coil configured to supply power supplies to a power reception coil, a second partial coil to which the current in the particular direction is induced by the magnetic field, and a third partial coil, which is disposed between the first and second partial coils, to which current in the opposite direction of the particular direction is induced by the magnetic field; a measurement unit configured to measure the voltage of the measurement coil as measurement coil voltage; and a foreign object detecting unit configured to detect a foreign object within the magnetic field based on the measurement coil voltage.
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14. A power supply system comprising:
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a power supply coil configured to supply power via a magnetic field; a power reception coil configured to receive the power; a measurement coil made up of a first partial coil to which current in a particular direction is induced by the magnetic field, a second partial coil to which the current in the particular direction is induced by the magnetic field, and a third partial coil, which is disposed between the first and second partial coils, to which current in the opposite direction of the particular direction is induced by the magnetic field; a measurement unit configured to measure the voltage of the measurement coil as measurement coil voltage; and a foreign object detecting unit configured to detect a foreign object within the magnetic field based on the measurement coil voltage.
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15. A detecting device control method comprising:
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measuring, at a measurement unit, voltage of a measurement coil made up of a first partial coil to which current in a particular direction is induced by a magnetic field to be supplied to a power reception coil configured to receive power, a second partial coil to which the current in the particular direction is induced by the magnetic field, and a third partial coil, which is disposed between the first and second partial coils, to which current in the opposite direction of the particular direction is induced by the magnetic field, as measurement coil voltage; and detecting, at a foreign object detecting unit, a foreign object within the magnetic field based on the measurement coil voltage.
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Specification