WIRELESS POWER TRANSMISSION SYSTEM, POWER TRANSMITTING DEVICE, AND POWER RECEIVING DEVICE
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Abstract
A wireless power transmission system as an embodiment of the present disclosure transmits electric power by a non-contact method from a first inductor to a second inductor, or vice versa, via resonant magnetic coupling. The wireless power transmission system includes: the first inductor that has a center hole; the second inductor that is spaced apart from the first inductor and that is smaller in size than the hole of the first inductor; and a magnetic body member that is arranged on one side of the first inductor so as to face the second inductor and that covers at least a part of the first inductor. That at least a part of the first inductor reaches an outer edge of the first inductor from an inner edge thereof.
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Citations
25 Claims
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1-11. -11. (canceled)
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12. A power transmitting device for use in a wireless power transmission system that is configured to transmit electric power by a non-contact method from a first inductor to a second inductor, or vice versa, via resonant magnetic coupling, the device comprising:
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the first inductor that is spaced apart from the second inductor and that has a center hole that is larger in size than the second inductor; and a magnetic body that is interposed between the first inductor and the second inductor, that covers from an inner edge of the first inductor to an outer edge thereof, and that has a center hole being larger in size than the second inductor, so as to reduce a leaking magnetic field over the first inductor while transmitting electric power between the first inductor and the second inductor, wherein the magnetic body includes a portion that extends from the inner edge of the first inductor toward the center of the hole and a portion that extends outside of the first inductor from the outer edge of the first inductor. - View Dependent Claims (13, 14, 15, 17, 18, 19, 20, 24, 25)
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16. (canceled)
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21. A power receiving device for use in a wireless power transmission system configured to transmit electric power by a non-contact method from a first inductor to a second inductor, or vice versa, via resonant magnetic coupling, the system comprising:
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the first inductor that has a center hole; the second inductor that is spaced apart from the first inductor and that is smaller in size than the hole of the first inductor; and a magnetic body that is interposed between the first inductor and the second inductor, that covers from an inner edge of the first inductor to an outer edge thereof, and that has a center hole being larger in size than the second inductor, so as to reduce a leaking magnetic field over the first inductor while transmitting electric power between the first inductor and the second inductor, wherein the magnetic body includes a portion that extends from the inner edge of the first inductor toward the center of the hole and a portion that extends outside of the first inductor from the outer edge of the first inductor, the power receiving device comprising one of the first and second inductors that receives power.
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22. A wireless power transmission system configured to transmit electric power by a non-contact method from a first inductor to a second inductor, or vice versa, via resonant magnetic coupling, the system comprising:
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the first inductor that has a center hole; the second inductor that is spaced apart from the first inductor and that is smaller in size than the hole of the first inductor; and a magnetic body that is interposed between the first inductor and the second inductor, that covers from an inner edge of the first inductor to an outer edge thereof, and that has a center hole being larger in size than the second inductor, so as to reduce a leaking magnetic field over the first inductor while transmitting electric power between the first inductor and the second inductor, wherein the magnetic body includes a portion that extends from the inner edge of the first inductor toward the center of the hole and a portion that extends outside of the first inductor from the outer edge of the first inductor, wherein the magnetic body comprises a magnetic material. - View Dependent Claims (23)
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Specification