Detecting apparatus, power receiving apparatus, power transmitting apparatus, and contactless power supply system
First Claim
1. A power transmitting apparatus, comprising:
- a first coil in a first layer;
a second coil, in a second layer, that overlaps the first coil; and
a third coil, in a third layer, that overlaps the first coil and the second coil,wherein the third coil comprises a first sub coil, a second sub coil, a third sub coil, and a fourth sub coil that are connected in series, the first sub coil and the third sub coil produce a first magnetic flux in a first orientation, and the second sub coil and the fourth sub coil produce a second magnetic flux in a second orientation, wherein the first orientation is different from the second orientation, andwherein an outer end of the first sub coil is connected to an outer end of the second sub coil, and an inner end of the second sub coil is connected to an inner end of the third sub coil.
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Accused Products
Abstract
There is provided a detecting apparatus including one or a plurality of magnetic coupling elements that include a plurality of coils, 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. In the one or plurality of magnetic coupling elements, the plurality of coils are electrically connected such that magnetic flux produced from at least one or more of the plurality of coils and magnetic flux produced from remaining coils of the plurality of coils have approximately opposing orientations.
24 Citations
16 Claims
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1. A power transmitting apparatus, comprising:
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a first coil in a first layer; a second coil, in a second layer, that overlaps the first coil; and a third coil, in a third layer, that overlaps the first coil and the second coil, wherein the third coil comprises a first sub coil, a second sub coil, a third sub coil, and a fourth sub coil that are connected in series, the first sub coil and the third sub coil produce a first magnetic flux in a first orientation, and the second sub coil and the fourth sub coil produce a second magnetic flux in a second orientation, wherein the first orientation is different from the second orientation, and wherein an outer end of the first sub coil is connected to an outer end of the second sub coil, and an inner end of the second sub coil is connected to an inner end of the third sub coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A contactless power supply system, comprising:
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a power transmitting apparatus configured to wirelessly transmit power; and a power receiving apparatus configured to receive the power from the power transmitting apparatus, wherein at least one of the power transmitting apparatus or the power receiving apparatus includes; a first coil in a first layer; a second coil, in a second layer, that overlaps the first coil; and a third coil, in a third layer, that overlaps the first coil and the second coil, wherein the third coil comprises a first sub coil, a second sub coil, a third sub coil, and a fourth sub coil that are connected in series, the first sub coil and the third sub coil produce a first magnetic flux in a first orientation, and the second sub coil and the fourth sub coil produce a second magnetic flux in a second orientation, wherein the first orientation is different from the second orientation, and wherein an outer end of the first sub coil is connected to an outer end of the second sub coil, and an inner end of the second sub coil is connected to an inner end of the third sub coil.
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Specification