Power transmission coil
First Claim
1. A power transmission coil comprising:
- a plane coil including a coil wire wound about a no-wire portion, the plane coil being configured to transmit power;
a cover for covering the plane coil from above;
a first foreign-matter-detecting unit provided at the no-wire portion, and configured to output a signal upon a foreign matter contacting the first foreign-matter-detecting unit; and
a power control circuit electrically connected to the plane coil and the first foreign-matter-detecting unit,wherein an upper surface of the cover has a first inclining portion inclining toward the first foreign-matter-detecting unit, andwherein the power control circuit is configured;
to cause the plane coil to transmit power if a foreign matter is not detected at the no-wire portion based on an output from the first foreign-matter-detecting unit; and
to cause the plane coil to stop transmitting power if foreign matter is detected at the no-wire portion based on an output from the first foreign-matter-detecting unit.
2 Assignments
0 Petitions
Accused Products
Abstract
A power transmission coil includes a plane coil including a no-wire portion and a coil wound about a no-wire portion, a cover for covering the plane coil from above, a first foreign-matter-detecting unit provided at the no-wire portion, and a power control circuit electrically connected to the plane coil and the first foreign-matter-detecting unit. An upper surface of the cover has a first inclining portion inclining toward the first foreign-matter-detecting unit. The power control circuit transmits power through the plane coil if a foreign matter is not detected in the no-wire portion based on an output from the first foreign-matter-detecting unit. The power control circuit is configured to stop transmitting power through the plane coil if foreign matter is detected in the no-wire portion based on an output from the first foreign-matter-detecting unit. This power transmission coil is capable of detecting a small foreign matter that may generate heat.
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Citations
8 Claims
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1. A power transmission coil comprising:
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a plane coil including a coil wire wound about a no-wire portion, the plane coil being configured to transmit power; a cover for covering the plane coil from above; a first foreign-matter-detecting unit provided at the no-wire portion, and configured to output a signal upon a foreign matter contacting the first foreign-matter-detecting unit; and a power control circuit electrically connected to the plane coil and the first foreign-matter-detecting unit, wherein an upper surface of the cover has a first inclining portion inclining toward the first foreign-matter-detecting unit, and wherein the power control circuit is configured; to cause the plane coil to transmit power if a foreign matter is not detected at the no-wire portion based on an output from the first foreign-matter-detecting unit; and to cause the plane coil to stop transmitting power if foreign matter is detected at the no-wire portion based on an output from the first foreign-matter-detecting unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification