High-power wireless charging foreign matter detection system and method thereof

The high-power wireless charging foreign matter detection system comprises an alternating current power supply, a resonant capacitor and a detection coil which are electrically connected together, the detection coil comprises a first coil unit, a second coil unit and a third coil unit which are sequentially stacked together, the first coil unit is formed by winding a first metal wire, and the second coil unit is formed by winding a second metal wire. The first coil is formed by winding a first metal wire, the second coil is formed by winding a second metal wire, the third coil is formed by winding a third metal wire, a second gap is formed between the second metal wires of adjacent turns, the first metal wire and the third metal wire cover the second gaps, and the first coil unit, the second coil unit and the third coil unit form a staggered and stacked detection coil. The blind area of the detection coil is effectively eliminated, and the detection reliability is improved. 本发明公开了一种大功率无线充电的异物检测系统及其方法，包括电连接在一起