CONTACTLESS POWER TRANSMISSION DEVICE
First Claim
Patent Images
1. A contactless power transmission device comprising:
- a power transmitter that includes a primary coil; and
a power receiver that includes a secondary coil and a power supply circuit electrically connected to the secondary coil, whereinthe power receiver includesa first auxiliary coil that relays magnetic flux flowing from the primary coil to the secondary coil, anda second auxiliary coil that is separate from the first auxiliary coil and relays magnetic flux flowing from the primary coil to the secondary coil, whereinthe second auxiliary coil is located where a center axis of the second auxiliary coil is inclined relative to a center axis of the first auxiliary coil or skew relative to the center axis of the first auxiliary coil.
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Accused Products
Abstract
A contactless power transmission device is provided with: a washstand that includes a primary coil; and an electric toothbrush that includes a secondary coil, a rectifier circuit, and a feed control unit. The electric toothbrush includes a first auxiliary coil which relays a magnetic flux which flows from the primary coil to the secondary coil, and a second auxiliary coil which relays a magnetic flux which flows from the primary coil to the secondary coil. A central axis of the second auxiliary coil is perpendicular to a central axis of the first auxiliary coil.
16 Citations
11 Claims
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1. A contactless power transmission device comprising:
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a power transmitter that includes a primary coil; and a power receiver that includes a secondary coil and a power supply circuit electrically connected to the secondary coil, wherein the power receiver includes a first auxiliary coil that relays magnetic flux flowing from the primary coil to the secondary coil, and a second auxiliary coil that is separate from the first auxiliary coil and relays magnetic flux flowing from the primary coil to the secondary coil, wherein the second auxiliary coil is located where a center axis of the second auxiliary coil is inclined relative to a center axis of the first auxiliary coil or skew relative to the center axis of the first auxiliary coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification