Power reception control device, power reception device, non-contact power transmission system, electronic instrument and power reception control method
First Claim
1. A power reception control device includable in a non-contact power transmission system that performs non-contact power transmission from a power transmission device to a power reception device through a primary coil and a secondary coil, the power reception device supplying power to a first load that is electrically connected to a power reception section of the power reception control device, the power reception control device comprising:
- the power reception section that converts an induced voltage in the secondary coil into a direct-current voltage,a load modulation section that modulates a second load of the power reception section; and
a power-reception-side control circuit that controls an operation of the power reception device,the load modulation section being configured to transmit information from the power reception device to the power transmission device through the secondary coil to the primary coil utilizing load modulation of the second load, andthe power-reception-side control circuit being configured to reduce the power supplied from the power reception section to the first load when the power-reception-side control circuit controls the load modulation section to transmit the information from the power reception device to the power transmission device.
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Accused Products
Abstract
A power reception control device provided in a power reception device of a non-contact power transmission system includes a power-reception-side control circuit that controls an operation of the power reception device, and a power supply control signal output terminal that supplies a power supply control signal to a charge control device, the power supply control signal controlling power supply to a battery. The power-reception-side control circuit controls a timing at which the power supply control signal (ICUTX) is output from the power supply control signal output terminal. The operation of the charge control device is compulsorily controlled using the power supply control signal (ICUTX).
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Citations
10 Claims
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1. A power reception control device includable in a non-contact power transmission system that performs non-contact power transmission from a power transmission device to a power reception device through a primary coil and a secondary coil, the power reception device supplying power to a first load that is electrically connected to a power reception section of the power reception control device, the power reception control device comprising:
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the power reception section that converts an induced voltage in the secondary coil into a direct-current voltage, a load modulation section that modulates a second load of the power reception section; and a power-reception-side control circuit that controls an operation of the power reception device, the load modulation section being configured to transmit information from the power reception device to the power transmission device through the secondary coil to the primary coil utilizing load modulation of the second load, and the power-reception-side control circuit being configured to reduce the power supplied from the power reception section to the first load when the power-reception-side control circuit controls the load modulation section to transmit the information from the power reception device to the power transmission device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power reception control method for a non-contact power transmission system that performs non-contact power transmission from a power transmission device to a power reception device through a primary coil and a secondary coil, the power reception device supplying power to a first load that is electrically connected to a power reception section, the power reception method comprising:
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operating the power reception section and converting an induced voltage in the secondary coil into a direct-current voltage; supplying a power to the first load; modulating a second load of the power reception section; transmitting information from the power reception device to the power transmission device through the secondary coil to the primary coil utilizing a load modulation of the second load, reducing the power supplied from the power reception section to the first load when the information is transmitted from the power reception device to the power transmission device. - View Dependent Claims (10)
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Specification