DRIVE METHOD FOR NON-CONTACT POWER SUPPLY DEVICE, NON-CONTACT POWER SUPPLY DEVICE, AND NON-CONTACT POWER SUPPLY SYSTEM
First Claim
1. A method for driving a contactless power supply device that supplies power to an electronic device including a secondary coil and a load, wherein the contactless power supply device including a primary coil and a high frequency inverter, the high frequency inverter supplies high frequency current to the primary coil to generate an alternating magnetic field, the alternating magnetic field generates an induced electromotive force at the secondary coil, and the load is driven using the electromotive force, the method comprising:
- connecting a resonance capacitor to the primary coil;
connecting a fluctuating voltage power generating device to the high frequency inverter; and
performing an inverter operation with the high frequency inverter using a fluctuating voltage generated by the fluctuating voltage power generating device.
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Accused Products
Abstract
A power supply device (2) is provided with a push-type power generator (4). When a push-button (5) on the push-type power generator (4) is pushed, a variable voltage is generated by a piezoelectric element (6) that excites a primary coil (L1). A high-frequency inverter (8) is activated by the variable voltage, exciting the primary coil (L1), and an alternating field is generated from the primary coil (L1). Secondary power can be supplied by means of the alternating field even if a secondary coil (L2) of an electrical device (10), disposed on a surface of a wall (1) opposite the surface on which the charging device (2) is disposed, is not in contact with the power supply device (2). The secondary coil (L2) of the electrical device (10) causes a light-emitting diode (LED1) to illuminate using secondary power obtained by non-contact power supply.
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Citations
20 Claims
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1. A method for driving a contactless power supply device that supplies power to an electronic device including a secondary coil and a load, wherein the contactless power supply device including a primary coil and a high frequency inverter, the high frequency inverter supplies high frequency current to the primary coil to generate an alternating magnetic field, the alternating magnetic field generates an induced electromotive force at the secondary coil, and the load is driven using the electromotive force, the method comprising:
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connecting a resonance capacitor to the primary coil; connecting a fluctuating voltage power generating device to the high frequency inverter; and performing an inverter operation with the high frequency inverter using a fluctuating voltage generated by the fluctuating voltage power generating device. - View Dependent Claims (2, 3)
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4. A contactless power supply device that supplies power to an electronic device including a secondary coil and a load, wherein the contactless power supply device includes a primary coil and a high frequency inverter, the high frequency inverter supplies high frequency current to the primary coil to generate an alternating magnetic field, the alternating magnetic field generates an induced electromotive force at the secondary coil, and the load of the electric device is driven using the electromotive force, the contactless power supply device comprising:
a fluctuating voltage power generating device that is connected to the high frequency inverter and generates a fluctuating voltage used by the high frequency inverter to perform an inverter operation. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A contactless power supply system comprising:
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a contactless power supply device including a primary coil and a high frequency inverter, wherein the high frequency inverter supplies high frequency current to the primary coil to generate an alternating magnetic field; and an electric device including a secondary coil, a power receiving circuit, and a load, wherein the alternating magnetic field generates an induced electromotive force at the secondary coil, the electromotive force is supplied to the load through the power receiving circuit, and the load is driven by the supplied electromotive force, wherein the contactless power supply device includes a fluctuating voltage power generating device that is connected to the high frequency inverter and generates a fluctuating voltage used by the high frequency inverter to perform an inverter operation. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification