Detecting apparatus, power receiving apparatus, power transmitting apparatus, and contactless power supply system
First Claim
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1. A detecting apparatus, comprising:
- a plurality of coils over a housing;
a plurality of positioning units over the housing,wherein at least one coil of the plurality of coils is wound around at least one positioning unit of the plurality of positioning units,wherein the at least one positioning unit maintains the at least one coil at a position on the housing,wherein the plurality of positioning units is in a vicinity of at least two coils of the plurality of coils,wherein each of the plurality of positioning units comprises a magnetic material, andwherein at least one of a real part of a permeability of the magnetic material, an imaginary part of the permeability, outermost dimensions in X, Y, and Z directions, placement in the X, Y, and Z directions, or quantity of units differ among the plurality of positioning units; and
a control circuit configured to detect a foreign matter based on a comparison of at least one electrical parameter of the at least one coil with a threshold value.
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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.
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Citations
14 Claims
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1. A detecting apparatus, comprising:
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a plurality of coils over a housing; a plurality of positioning units over the housing, wherein at least one coil of the plurality of coils is wound around at least one positioning unit of the plurality of positioning units, wherein the at least one positioning unit maintains the at least one coil at a position on the housing, wherein the plurality of positioning units is in a vicinity of at least two coils of the plurality of coils, wherein each of the plurality of positioning units comprises a magnetic material, and wherein at least one of a real part of a permeability of the magnetic material, an imaginary part of the permeability, outermost dimensions in X, Y, and Z directions, placement in the X, Y, and Z directions, or quantity of units differ among the plurality of positioning units; and a control circuit configured to detect a foreign matter based on a comparison of at least one electrical parameter of the at least one coil with a threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification