CONTACTLESS ELECTRICITY SUPPLY DEVICE
First Claim
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1. A contactless electricity supply device comprising:
- a first coil and a second coil that send or receive electricity contactlessly at least through magnetic coupling therebetween;
a third coil provided at a surface of the second coil, wherein the surface faces the first coil; and
a foreign object detection means that detects a foreign object between the first coil and the second coil on a basis of an induced voltage occurring in the third coil.
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Abstract
This contactless electricity supply device, which contactlessly performs charging of the battery (28) of a vehicle, is provided with: an electricity transmission coil (12) disposed at a road surface; and an electricity reception coil (22) disposed in the vehicle. A foreign object detection coil (13) is provided to the upper surface of the electricity transmission coil (12), and on the basis of induced voltage arising at the foreign object detection coil (13) during a trial electricity supply, foreign objects between the electricity transmission coil (12) and the electricity reception coil (22) are detected.
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Citations
10 Claims
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1. A contactless electricity supply device comprising:
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a first coil and a second coil that send or receive electricity contactlessly at least through magnetic coupling therebetween; a third coil provided at a surface of the second coil, wherein the surface faces the first coil; and a foreign object detection means that detects a foreign object between the first coil and the second coil on a basis of an induced voltage occurring in the third coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification