Foreign object detection in wireless energy transfer systems

This invention aims to detect unwanted objects or misalignment between a wireless power source and its receiver. It works by placing an auxiliary coil and a sensor near the power components to measure changes in the magnetic field. The system then uses these measurements to determine if there's debris or, as the claims specifically state, how misaligned the power source and receiver are.

Why it matters: The need for robust foreign object and misalignment detection in high-power wireless charging, especially for electric vehicles, has become a critical safety and efficiency requirement in the years since this was filed. Evolving standards for wireless EV charging now emphasize these features.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: ModerateCustom coils, sensors, control electronics

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