DETECTING APPARATUS, POWER RECEIVING APPARATUS, POWER TRANSMITTING APPARATUS, AND CONTACTLESS POWER SUPPLY SYSTEM
First Claim
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1. A detecting apparatus comprising:
- one or a plurality of magnetic coupling elements that include a plurality of coils;
a positioning unit disposed near at least one coil from among the plurality of coils included in the one or plurality of magnetic coupling elements; and
a detector that measures an electrical parameter related to the one or plurality of magnetic coupling elements or to a circuit that at least includes the one or plurality of magnetic coupling elements, and determines from a change in the electrical parameter whether a foreign matter that generates heat due to magnetic flux is present.
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Abstract
There is provided a detecting apparatus including one or a plurality of magnetic coupling elements that include a plurality of coils, a positioning unit disposed near at least one coil from among the plurality of coils included in the one or plurality of magnetic coupling elements, and a detector that measures an electrical parameter related to the one or plurality of magnetic coupling elements or to a circuit that at least includes the one or plurality of magnetic coupling elements, and determines from a change in the electrical parameter whether a foreign matter capable of generating heat due to magnetic flux is present.
73 Citations
16 Claims
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1. A detecting apparatus comprising:
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one or a plurality of magnetic coupling elements that include a plurality of coils; a positioning unit disposed near at least one coil from among the plurality of coils included in the one or plurality of magnetic coupling elements; and a detector that measures an electrical parameter related to the one or plurality of magnetic coupling elements or to a circuit that at least includes the one or plurality of magnetic coupling elements, and determines from a change in the electrical parameter whether a foreign matter that generates heat due to magnetic flux is present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A power receiving apparatus comprising:
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one or a plurality of magnetic coupling elements that include a plurality of coils; a positioning unit disposed near at least one coil from among the plurality of coils included in the one or plurality of magnetic coupling elements; and a detector that measures an electrical parameter related to the one or plurality of magnetic coupling elements or to a circuit that at least includes the one or plurality of magnetic coupling elements, and determines from a change in the electrical parameter whether a foreign matter that generates heat due to magnetic flux is present.
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15. A power transmitting apparatus comprising:
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a transmitter coil used for contactless power supply for a power recipient; one or a plurality of magnetic coupling elements that include a plurality of coils; a positioning unit disposed near at least one coil from among the plurality of coils included in the one or plurality of magnetic coupling elements; and a detector that measures an electrical parameter related to the one or plurality of magnetic coupling elements or to a circuit that at least includes the one or plurality of magnetic coupling elements, and determines from a change in the electrical parameter whether a foreign matter that generates heat due to magnetic flux is present.
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16. A contactless power supply system comprising:
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a power transmitting apparatus that wirelessly transmits power; and a power receiving apparatus that receives power from the power transmitting apparatus, wherein at least one of the power transmitting apparatus or the power receiving apparatus includes a contactless power supply coil used for contactless power supply, one or a plurality of magnetic coupling elements that include a plurality of coils, a positioning unit disposed near at least one coil from among the plurality of coils included in the one or plurality of magnetic coupling elements, and a detector that measures an electrical parameter related to the one or plurality of magnetic coupling elements or to a circuit that at least includes the one or plurality of magnetic coupling elements, and determines from a change in the electrical parameter whether a foreign matter that generates heat due to magnetic flux is present.
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Specification