Over-voltage protection device for resonant wireless power reception device and method for controlling the over-voltage protection device
First Claim
1. An over-voltage protection device for a resonant wireless power reception device, the over-voltage protection device comprising:
- a resonance signal receiver including a resonator for receiving a wireless resonance signal transmitted from a wireless power transmission device;
an over-voltage protector which is driven by a driver in an over-voltage protection operation to detune a resonance frequency of the reception device, thereby reducing reception power;
the driver for driving the over-voltage protector according to a control signal in the over-voltage protection operation; and
a controller for outputting the control signal for driving the over-voltage protector to the driver when it is determined that over-voltage occurs;
wherein the over-voltage protector includes detuning capacitors for detuning a resonance frequency of the resonator, and detrimentally affects receiving performance of the resonance signal receiver.
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Accused Products
Abstract
Provided is an over-voltage protection device for a resonant wireless power reception device. The over-voltage protection device includes a resonance signal receiver for receiving a wireless resonance signal transmitted from a wireless power transmission device, an over-voltage protector which is driven by a driver in an over-voltage protection operation to detune a resonance frequency of the reception device, thereby reducing reception power, the driver for driving the over-voltage protector according to a control signal in the over-voltage protection operation, and a controller for outputting the control signal for driving the over-voltage protector to the driver when it is determined that over-voltage occurs.
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Citations
14 Claims
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1. An over-voltage protection device for a resonant wireless power reception device, the over-voltage protection device comprising:
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a resonance signal receiver including a resonator for receiving a wireless resonance signal transmitted from a wireless power transmission device; an over-voltage protector which is driven by a driver in an over-voltage protection operation to detune a resonance frequency of the reception device, thereby reducing reception power; the driver for driving the over-voltage protector according to a control signal in the over-voltage protection operation; and a controller for outputting the control signal for driving the over-voltage protector to the driver when it is determined that over-voltage occurs; wherein the over-voltage protector includes detuning capacitors for detuning a resonance frequency of the resonator, and detrimentally affects receiving performance of the resonance signal receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An over-voltage protection method of an over-voltage protection device for a resonant wireless power reception device, the over-voltage protection method comprising:
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monitoring an input voltage of a constant-voltage generator; determining whether the input voltage is higher than an over-voltage protection start reference voltage, and performing an over-voltage protection operation by detuning a resonance frequency if the input voltage is higher than the over-voltage protection start reference voltage; and releasing the over-voltage protection operation of detuning the resonance frequency if the input voltage of the constant-voltage generator is lower than the over-voltage protection start reference voltage during the performing of the over-voltage protection operation. - View Dependent Claims (12, 13, 14)
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Specification