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 electric 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 of the contactless power supply device; and
providing a fluctuating voltage generated by the fluctuating voltage power generating device to the high frequency inverter and performing an inverter operation with the high frequency inverter using the provided fluctuating voltage,wherein the fluctuating voltage power generating device includes a power generating device arranged on a hinge for coupling a door to a gate post to open and close the door, andthe power generating device generates the fluctuating voltage when the door opens or closes to supply the fluctuating voltage to the electric device,the contactless power supply device and the electric device are accommodated in a recess provided in at least one of the gate post and the door, wherein a housing of the contactless power supply device and a housing of the electric device overlap in the recess,the contactless power supply device supplies power to the load of the electric device from the primary coil when the door opens or closes even if the contactless power supply device and the electric device are not in contact.
3 Assignments
0 Petitions
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.
22 Citations
10 Claims
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1. A method for driving a contactless power supply device that supplies power to an electric 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 of the contactless power supply device; and providing a fluctuating voltage generated by the fluctuating voltage power generating device to the high frequency inverter and performing an inverter operation with the high frequency inverter using the provided fluctuating voltage, wherein the fluctuating voltage power generating device includes a power generating device arranged on a hinge for coupling a door to a gate post to open and close the door, and the power generating device generates the fluctuating voltage when the door opens or closes to supply the fluctuating voltage to the electric device, the contactless power supply device and the electric device are accommodated in a recess provided in at least one of the gate post and the door, wherein a housing of the contactless power supply device and a housing of the electric device overlap in the recess, the contactless power supply device supplies power to the load of the electric device from the primary coil when the door opens or closes even if the contactless power supply device and the electric device are not in contact. - View Dependent Claims (2)
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3. 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; 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; and a fluctuating voltage power generating device that is connected to the high frequency inverter of the contactless power supply device and generates a fluctuating voltage used by the high frequency inverter to perform an inverter operation, wherein the fluctuating voltage power generating device includes a power generating device arranged a hinge for coupling on a door to a gate post to open and close the door, and the power generating device generates the fluctuating voltage when the door opens or closes to supply the fluctuating voltage to an electric device, the contactless power supply device and the electric device are accommodated in a recess provided in at least one of the gate post and the door, wherein a housing of the contactless power supply device and a housing of the electric device overlap in the recess, the contactless power supply device supplies power to the load of the electric device from the primary coil when the door opens or closes even if the contactless power supply device and the electric device are not in contact. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
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Specification