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The wireless charging transmitting coil is mainly composed of a main coil, a rotating ring, a wrapping coil and a rotating mechanism. Wireless charging transmitter coil plays an important role in wireless charging, wireless charging mainly uses the principle of electromagnetic induction, through the magnetic field generated by the coil, the magnetic field then generates current. When the system works, it can only be transmitted, and the wireless charging coil can only transmit energy but not receive energy, and the wireless charging receiver can receive energy. Wireless transmitter coil signal is strong, fast. Transmitting coil and receiving coil are the key components of inductively coupled power transmission system, and their structure has great influence on the transmission power and efficiency of the system.

The wireless charging coil is characterized in that the rotating mechanism comprises a housing, an active helical gear and a driven helical gear, the active helical gear is connected on the left side of the housing, the driven helical gear is connected on the upper end of the housing and meshes with the active helical gear, and the center of the driven helical gear is fixed on the lower surface of the center of the swivel ring.