INDUCTIVELY COUPLED POWER TRANSFER SYSTEMS

摘要

An inductively coupled power transmitter (1) uses a force detector to detect the presence of a potential device (5, 6) by monitoring forces applied to a surface of the power transmitter and activates the inductively coupled power transmitter upon detection of a potential device. A proximity detector detects the presence and location of a potential device (5, 6) by monitoring the proximity of devices to the power transmitter's surface (3) and activates the inductively coupled power transmitter upon detection of the device. Detection coils (21-23) each having an area much greater than that of the transmitter coils (8-19) serve for detecting the presence of a device. A controller selects and drives a combination of the transmitter coils providing the coupling between the power transmitter and a power receiver meeting a selection criteria.