WIRELESS POWER FEEDER, WIRELESS POWER RECEIVER, AND WIRELESS POWER TRANSMISSION SYSTEM
First Claim
Patent Images
1. A wireless power feeder that feeds power by wireless from a feeding coil to a receiving coil, comprising:
- a plurality of feeding coils; and
a power transmission control circuit provided in common to the plurality of feeding coils for supplying AC power thereto,the plurality of feeding coils being adjacently arranged such that coil surfaces thereof partially overlap each other.
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Accused Products
Abstract
To increase efficiency of wireless power feeding to a moving object in wireless power feeding of a magnetic field resonance type. A wireless power feeder includes a plurality of feeding coils and a power feeding source (power transmission control circuit) provided in common to the plurality of feeding coils and feeds power from the plurality of feeding coils to a receiving coil by wireless. The plurality of feeding coils are adjacently arranged such that coil surfaces thereof partially overlap each other.
19 Citations
10 Claims
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1. A wireless power feeder that feeds power by wireless from a feeding coil to a receiving coil, comprising:
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a plurality of feeding coils; and a power transmission control circuit provided in common to the plurality of feeding coils for supplying AC power thereto, the plurality of feeding coils being adjacently arranged such that coil surfaces thereof partially overlap each other. - View Dependent Claims (2, 3, 4)
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5. A wireless power receiver that receives, at a receiving coil, AC power fed by wireless from a feeding coil, comprising:
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a plurality of receiving coils; and a loading coil provided in common to the plurality of receiving coils, magnetically coupled thereto, and receives the AC power that the plurality of receiving coils have received from the feeding coil, the plurality of receiving coils being adjacently arranged such that coil surfaces thereof partially overlap each other. - View Dependent Claims (6, 7, 8, 9)
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10. A wireless power transmission system for feeding power from a feeding coil to a receiving coil, comprising:
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a wireless power feeder; and a wireless power receiver, the wireless power feeder including a plurality of feeding coils and a power transmission control circuit provided in common to the plurality of feeding coils for supplying AC power thereto, the wireless power receiver including a receiving coil, a loading coil that is magnetically coupled to the receiving coil and receives the AC power that the receiving coil has received from the feeding coil, and a secondary battery connected to the loading coil, the plurality of feeding coils being adjacently arranged such that coil surfaces thereof partially overlap each other, the secondary battery being charged with the AC power supplied to the loading coil.
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Specification