Detecting apparatus, power receiving apparatus, power transmitting apparatus, and contactless power supply system
First Claim
Patent Images
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;
a magnetic shielding material that reduces outward magnetic flux leakage, and is able to maintain a position relationship between the one or plurality of magnetic coupling elements and the positioning unit; 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.
1 Assignment
0 Petitions
Accused Products
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.
25 Citations
15 Claims
-
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; a magnetic shielding material that reduces outward magnetic flux leakage, and is able to maintain a position relationship between the one or plurality of magnetic coupling elements and the positioning unit; 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. A power receiving 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; a magnetic shielding material that reduces outward magnetic flux leakage, and is able to maintain a position relationship between the one or plurality of magnetic coupling elements and the positioning unit; 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.
-
-
14. A power transmitting apparatus comprising:
-
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; a magnetic shielding material that reduces outward magnetic flux leakage, and is able to maintain a position relationship between the one or plurality of magnetic coupling elements and the positioning unit; 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.
-
-
15. A contactless power supply system comprising:
-
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; 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, a magnetic shielding material that reduces outward magnetic flux leakage, and is able to maintain a position relationship between the one or plurality of magnetic coupling elements and the positioning unit; 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.
-
Specification