Over-voltage protection device for resonant wireless power reception device and method for controlling the over-voltage protection device

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.