Patent application number | Description | Published |
20110140539 | HIGH FREQUENCY ELECTRIC WIRE - A high frequency electric wire is provided in such a manner that a large number of wires are bundled, twisted and insulated with an outer sheath S. Each wire has an extra-fine hollow pipe structure of a capillary shape. The wire is provided to make its hollow section with the extra-fine hollow pipe structure an air cavity or to cause its hollow section to house an insulating material. In the latter case, the wire is provided by causing a metal conductor to adhere to the outer periphery of an extra-fine insulating yarn, which serves as the insulating material, by plating or vapor-deposition. The electric wire is used as a circuit cable or a coil in a non-contact power feeding device which supplies power based on a mutual induction action of the electromagnetic induction. In this manner, the electric wire fulfills its function to suppress and reduce an increase of the alternating current resistance due to a high frequency alternating current. | 06-16-2011 |
20110248574 | MOBILE TYPE NON-CONTACT POWER FEEDING DEVICE - A non-contact power feeding device feeds power from a power transmission coil to a power receiving coil based on a mutual induction effect of electromagnetic induction. In such a non-contact power feeding device, power can be fed to the power receiving coil by a mobile power feeding method whereby the power receiving coil is moved corresponding to the stationary power transmission coil through an air gap in the case of power feeding. The power transmission coil and the power receiving coil are respectively formed in a loop-shaped flat structure. A crossover coil is adopted to serve as the power transmission coil. The crossover coil is formed in a long loop shape along the direction of movement of the power receiving side and is crossed along the way to provide a plurality of units. It is however to be noted that a resonant repeating coil can be used together with the power transmission coil to adopt the crossover coil as its repeating coil. | 10-13-2011 |
20110304217 | NON-CONTACT POWER FEEDING DEVICE - In a non-contact power feeding device of the present invention, power is fed through an air gap with no contact from a power transmission coil of a power feeding side circuit to a power receiving coil of a power receiving side circuit, which are located to face each other, based on a mutual induction effect of electromagnetic induction. In such a non-contact power feeding device, a resonant coil of a repeating circuit is disposed on the power transmission coil side and/or the power receiving coil side. The resonant coil is wound in parallel on the same plane as the power transmission coil and/or the power receiving coil. The resonant coil the power transmission coil and the power receiving coil are respectively composed of a single insulated conducting wire or a number of insulated conducting wires. | 12-15-2011 |
20120153741 | NON-CONTACT POWER FEEDING APPARATUS - In a non-contact power feeding apparatus of the present invention, power is fed through an air gap from a power transmission coil of a power feeding side circuit to a power receiving coil of a power receiving side circuit, which are closely located to face each other, based on a mutual induction effect of electromagnetic induction. The power transmission coil and the power receiving coil are respectively composed of a planar assembly of a number of unit coils. Each unit coil is formed in a spirally wound flat structure, wherein the direction of an electric current is set in reverse to make the north and south magnetic poles reverse between each unit coil which is juxtaposed to another to directly come into line. As a result, the unit coils, which are juxtaposed to another to directly come into line, are provided in such a manner that an overlapping area of a respectively formed magnetic field cancels another out to be offset | 06-21-2012 |
20120169135 | NON-CONTACT POWER FEEDING APPARATUS OF MAGNETIC RESONANCE METHOD - In this non-contact power feeding apparatus, a power feeding circuit is provided with a power transmission coil and a first parallel capacitor to provide a first parallel resonance circuit, while a power receiving circuit is provided with a power receiving coil and a second parallel capacitor to provide a second parallel resonance circuit. Both parallel resonant circuits are set to have the same resonance frequency and a power frequency of a high-frequency power source in the power feeding side circuit is set to be the same as this resonance frequency. A circuit section including the high-frequency power source and a circuit section including the first parallel capacitor and the power transmission coil are connected by the electric field coupling of electric field coupling capacitors. | 07-05-2012 |
20130088087 | NON-CONTACT POWER FEEDING DEVICE - A non-contact power feeding device is provided to feed power from a primary coil on a primary side to a secondary coil on a secondary side, which are closely located to face each other with no contact through an air gap, based on a mutual induction effect of electromagnetic induction. In such a non-contact power feeding device, a repeating resonant coil constituting a resonant circuit is disposed in a magnetic path of the air gap. This resonant circuit is independent of a power circuit on the primary side and a load side circuit on the secondary side and is provided with the repeating resonant coil and a capacitor. In the case of power feeding, the repeating resonant coil of the resonant circuit feeds exciting reactive power to the magnetic path of the air gap. | 04-11-2013 |