Power transmission device, and power transmitter and power receiver for the same
First Claim
1. A power transmission device for performing contactless power transmission from a power transmitter to a power receiver, whereinthe power transmitter comprises:
- a main body having first and second surfaces that are disposed adjacent to each other,a power transmitting coil disposed within the main body and having a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface, anda power source supplying alternating-current power to the power transmitting coil through a resonance capacitor, andthe power receiver comprises;
a main body having a third surface and a fourth surface opposed to the first and second surfaces, respectively,a power receiving coil disposed within the main body and having a third coil portion corresponding to the third surface and a fourth coil portion corresponding to the fourth surface, anda rectification circuit configured to rectify alternating-current power induced in the power receiving coil, wherein the rectification circuit is connected to the power receiving coil through a resonance capacitor, whereincurrents flowing in the first and second coil portions are set so that currents induced in the third and fourth coil portions by a magnetic field generated by the current flowing in the first and second coil portions, flow in the same direction.
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Accused Products
Abstract
A power transmission device performs contactless power transmission from a power transmitter to a power receiver. The power transmitter includes a main body supporting the power receiver by first and second surfaces that are disposed adjacent to each other, a power transmitting coil disposed within the main body and having a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface, and a power source supplying power to the power transmitting coil. The power receiver includes a main body having a third surface and a fourth surface opposed to the first and second surfaces, respectively, and a power receiving coil disposed within the main body and having a third coil portion corresponding to the third surface and a fourth coil portion corresponding to the fourth surface.
7 Citations
19 Claims
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1. A power transmission device for performing contactless power transmission from a power transmitter to a power receiver, wherein
the power transmitter comprises: -
a main body having first and second surfaces that are disposed adjacent to each other, a power transmitting coil disposed within the main body and having a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface, and a power source supplying alternating-current power to the power transmitting coil through a resonance capacitor, and the power receiver comprises; a main body having a third surface and a fourth surface opposed to the first and second surfaces, respectively, a power receiving coil disposed within the main body and having a third coil portion corresponding to the third surface and a fourth coil portion corresponding to the fourth surface, and a rectification circuit configured to rectify alternating-current power induced in the power receiving coil, wherein the rectification circuit is connected to the power receiving coil through a resonance capacitor, wherein currents flowing in the first and second coil portions are set so that currents induced in the third and fourth coil portions by a magnetic field generated by the current flowing in the first and second coil portions, flow in the same direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power transmitter for performing contactless power transmission to a power receiver, the power transmitter comprising:
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a main body having first and second surfaces that are disposed adjacent to each other and configured to respectively support third and fourth surfaces of a power receiver; a power transmitting coil disposed within the main body and having a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface, wherein the first and second coil portions are each an independent coil; and a power source supplying alternating-current power to the first and second coil portions through a resonance capacitor. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A power receiver for receiving power by contactless power transmission from a power transmitter including a first main body having first and second surfaces that are disposed adjacent to each other, and a power transmitting coil disposed within the first main body and including a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface, the power receiver comprising:
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a second main body having a third surface configured to be supported by the first surface during the contactless power transmission from the power transmitter to the power receiver and a fourth surface configured to be supported by the second surface during the contactless power transmission from the power transmitter to the power receiver; a power receiving coil disposed within the second main body and including a third coil portion corresponding to the third surface and a fourth coil portion corresponding to the fourth surface; and a rectification circuit configured to rectify alternating-current power induced in the power receiving coil, wherein the rectification circuit is connected to the power receiving coil through a resonance capacitor, wherein currents flowing in the first and second coil portions are set so that currents induced in the third and fourth coil portions by a magnetic field generated by the current flowing in the first and second coil portions, flow in the same direction. - View Dependent Claims (18, 19)
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Specification