Detectable foreign object coupling mechanism and wireless power system and parameter design method

Abstract

The application provides a coupling mechanism capable of detecting foreign matters, a wireless power supply system and a parameter design method. The coupling mechanism comprises an energy transmitting coil, characterized in that: the energy transmitting coil is sequentially and segmentally wound, two adjacent energy transmitting sub-coils are connected in series through a dividing capacitor, the dividing capacitor and an inner energy transmitting sub-coil constitute a foreign matter detection sampling module, and foreign matter detection connection taps are arranged at both ends of the foreign matter detection sampling module. The effect is that: under the condition of not adding other detection coils and sensors and without affecting the performance of the original wireless power supply system such as power and efficiency, the detection sensitivity of metal foreign matters is improved, the system power supply function is realized while the system is provided with the foreign matter detection function, the manufacturing is simple, compared with the traditional detection technology based on the system parameters, under the same condition, the system detection sensitivity and accuracy are higher, the detected foreign matter size is smaller, and the detection effect is good.

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