Charging control device, charging control method and wireless power receiving device equipped with same
First Claim
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1. A wireless power receiver for transferring a power received from a wireless power transmitter to a load, the wireless power receiver comprising:
- a receiving coil configured to receive an AC power from the wireless power transmitter;
a rectifier configured to rectify the AC power into a DC voltage;
a capacitor configured to charge the rectified DC voltage;
a comparator configured to compare a voltage of the capacitor with a reference voltage and generate an output signal based on the comparison result to control a supply of the DC voltage to the load;
a controller configured to recognize a state of the load and generate a control signal based on the state of the load; and
a modulator disposed between the receiving coil and the rectifier and modulated according to the control signal of the controller,wherein information is supplied from the receiving coil to a transmitting coil of the wireless power transmitter by modulation of the modulator.
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Abstract
A charging control device includes a capacitor, a comparison unit and a switching unit. The capacitor is charged with a voltage converted from power received from a wireless power sending device. The comparison unit compares the voltage of the capacitor with a reference voltage, and generates an output signal according to the result of the comparison. The switching unit is connected to the front end of the capacitor and is switched by the output signal from the comparison unit so as to control whether to supply the converted voltage to a load terminal.
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Citations
16 Claims
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1. A wireless power receiver for transferring a power received from a wireless power transmitter to a load, the wireless power receiver comprising:
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a receiving coil configured to receive an AC power from the wireless power transmitter; a rectifier configured to rectify the AC power into a DC voltage; a capacitor configured to charge the rectified DC voltage; a comparator configured to compare a voltage of the capacitor with a reference voltage and generate an output signal based on the comparison result to control a supply of the DC voltage to the load; a controller configured to recognize a state of the load and generate a control signal based on the state of the load; and a modulator disposed between the receiving coil and the rectifier and modulated according to the control signal of the controller, wherein information is supplied from the receiving coil to a transmitting coil of the wireless power transmitter by modulation of the modulator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wireless power receiver for transferring a power received from a wireless power transmitter to a load, the wireless power receiver comprising:
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a receiving coil configured to receive an AC power from the wireless power transmitter; a rectifier configured to rectify the AC power into a DC voltage; a capacitor configured to charge the rectified DC voltage; a modulator disposed between the receiving coil and the rectifier; and a controller configured to compare a voltage of the capacitor with a reference voltage, generate a first control signal based on the comparison result to control a supply of the DC voltage to the load, recognize a state of the load, and generate a second control signal based on the state of the load, wherein the modulator is modulated according to the second control signal of the controller, and wherein information is supplied from the receiving coil to a transmitting coil of the wireless power transmitter by modulation of the modulator. - View Dependent Claims (13, 14, 15, 16)
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Specification