NON-CONTACT POWER SUPPLY APPARATUS
First Claim
1. A non-contact power supply apparatus comprising:
- a transmission-side pad that has a coil and generates magnetic flux by being supplied alternating-current power;
a transmission-side resonant circuit that is connected to the transmission-side pad and configures a resonant circuit together with the coil of the transmission-side pad;
a reception-side pad that has a different coil and generates an alternating current by interlinking with the magnetic flux generated by the transmission-side pad;
a reception-side resonant circuit that is connected to the reception-side pad and configures a resonant circuit together with the coil of the reception-side pad;
a power transmission circuit that is connected to a direct-current power supply and to the transmission-side pad, and that converts a direct current supplied from the direct-current power supply to an alternating current and supplies the alternating current to the transmission-side pad connected to the transmission-side resonant circuit;
a power reception circuit that is connected to the reception-side pad connected to the reception-side resonant circuit and to a power supply target, and that converts an alternating current supplied from the reception-side pad to a direct current and supplies the direct current to the power supply target; and
a control circuit that is connected to the power transmission circuit and the power reception circuit, and controls the power transmission circuit and the power reception circuit, whereinthe control circuit is configured to control an alternating-current voltage supplied from the power transmission circuit to the transmission-side pad and an alternating-current voltage supplied from the reception-side pad to the power reception circuit, so that a power factor of the alternating current supplied from the power transmission circuit to the transmission-side pad and direct-current power supplied from the power reception circuit to the power supply target are respectively set to target values, and transmit electric power from the direct-current power supply to the power supply target.
1 Assignment
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Accused Products
Abstract
A non-contact power supply apparatus includes a transmission-side pad, a transmission-side resonant circuit, a reception-side pad, a reception-side resonant circuit, a power transmission circuit, a power reception circuit, and a control circuit. The control circuit controls an alternating-current voltage supplied to the transmission-side pad and an alternating-current voltage supplied to the power reception circuit, so that a power factor of the alternating current supplied from the power transmission circuit to the transmission-side pad connected to the transmission-side resonant circuit and direct-current power supplied from the power supply circuit to an on-board battery are respectively set to target values. As a result, change in power factor can be suppressed even when the coupling coefficient of the transmission-side pad and the reception-side pad changes, and predetermined electric power can be transmitted.
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Citations
20 Claims
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1. A non-contact power supply apparatus comprising:
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a transmission-side pad that has a coil and generates magnetic flux by being supplied alternating-current power; a transmission-side resonant circuit that is connected to the transmission-side pad and configures a resonant circuit together with the coil of the transmission-side pad; a reception-side pad that has a different coil and generates an alternating current by interlinking with the magnetic flux generated by the transmission-side pad; a reception-side resonant circuit that is connected to the reception-side pad and configures a resonant circuit together with the coil of the reception-side pad; a power transmission circuit that is connected to a direct-current power supply and to the transmission-side pad, and that converts a direct current supplied from the direct-current power supply to an alternating current and supplies the alternating current to the transmission-side pad connected to the transmission-side resonant circuit; a power reception circuit that is connected to the reception-side pad connected to the reception-side resonant circuit and to a power supply target, and that converts an alternating current supplied from the reception-side pad to a direct current and supplies the direct current to the power supply target; and a control circuit that is connected to the power transmission circuit and the power reception circuit, and controls the power transmission circuit and the power reception circuit, wherein the control circuit is configured to control an alternating-current voltage supplied from the power transmission circuit to the transmission-side pad and an alternating-current voltage supplied from the reception-side pad to the power reception circuit, so that a power factor of the alternating current supplied from the power transmission circuit to the transmission-side pad and direct-current power supplied from the power reception circuit to the power supply target are respectively set to target values, and transmit electric power from the direct-current power supply to the power supply target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification