Device and method for controlling wireless power signal in wireless power transmission device

摘要

Various embodiments of a method for controlling a wireless power signal in a wireless power transmission device and related devices are disclosed. In one exemplary embodiment, the method may include transmitting an object detecting signal via a transmission coil of the wireless power transmission device, receiving an object response signal in response to the object detecting signal via the transmission coil, and transmitting the wireless power signal to a wireless power receiving device via the transmission coil based on the object response signal. The method may also include detecting a voltage or a current of the transmission coil and changing the wireless power signal when a phase value of the voltage or the current of the transmission coil is changed by more than a predetermined value.

主权项

1. A method of controlling a wireless power signal in a wireless power transmission device, comprising:
transmitting an object detecting signal via a transmission coil of the wireless power transmission device; receiving an object response signal in response to the object detecting signal via the transmission coil; transmitting the wireless power signal to a wireless power receiving device via the transmission coil based on the object response signal; detecting a voltage or a current of the transmission coil; detecting a movement of the wireless power receiving device by detecting change of a phase value of the voltage or the current of the transmission coil; and changing the wireless power signal if the movement of the wireless power receiving device is detected, wherein the transmission coil comprises a first transmission coil and a second transmission coil, and wherein the changing of the wireless power signal comprises: retransmitting the object detecting signal in turn via the first transmission coil and the second transmission coil; and retransmitting the wireless power signal by selecting any one of the first transmission coil and the second transmission coil based on the object response signal received in response to the object detecting signal.