Detecting device, power supply system, and detecting device control method
First Claim
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1. A detecting device comprising:
- 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 and a second partial coil to which the 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
an object detecting unit configured to detect an object within the magnetic field based on the measurement coil voltage,wherein the first partial coil and the second partial coil are disposed in a position sandwiching the middle of the outermost edge and the innermost edge of the power reception coil, the area of each coil surface of the first partial coil and the second partial coil differs.
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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, and a second partial coil to which the 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.
5 Citations
17 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 and a second partial coil to which the 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 an object detecting unit configured to detect an object within the magnetic field based on the measurement coil voltage, wherein the first partial coil and the second partial coil are disposed in a position sandwiching the middle of the outermost edge and the innermost edge of the power reception coil, the area of each coil surface of the first partial coil and the second partial coil differs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14)
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11. 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 by a power supply coil configured to supply power to a power reception coil configured to receive power, and a second partial coil to which the 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 an object detecting unit configured to detect an object within the magnetic field based on the measurement coil voltage, wherein the first partial coil and the second partial coil are disposed in a position sandwiching the middle of the outermost edge and the innermost edge of the power reception coil, the area of each coil surface of the first partial coil and the second partial coil differs. - View Dependent Claims (15)
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12. 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 a magnetic field, and a second partial coil to which the 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 an object detecting unit configured to detect an object within the magnetic field based on the measurement coil voltage, wherein the first partial coil and the second partial coil are disposed in a position sandwiching the middle of the outermost edge and the innermost edge of the power reception coil, the area of each coil surface of the first partial coil and the second partial coil differs. - View Dependent Claims (16)
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13. 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, and a second partial coil to which the current in the opposite direction of the particular direction is induced by the magnetic field; and detecting, at an object detecting unit, an object within the magnetic field based on the measurement coil voltage, wherein the first partial coil and the second partial coil are disposed in a position sandwiching the middle of the outermost edge and the innermost edge of the power reception coil, the area of each coil surface of the first partial coil and the second partial coil differs. - View Dependent Claims (17)
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Specification