ENHANCED FOREIGN OBJECT DETECTION WITH COIL CURRENT SENSING IN WIRELESS POWER TRANSFER SYSTEMS

摘要

Embodiments described herein provide foreign object detection based on coil current sensing. Transmitter power loss is calculated directly based on coil current, with or instead of conventional calculations based on transmitter input current. The enhanced precision of computer power dissipation can be used to more accurately detect foreign objects near the transmitter coil during wireless power transfer.