Wireless charging device of portable device

The utility model provides a wireless charging device of a portable device. An upper cover is embedded with a bottom shell to form a box-shaped structure; bottom feet and radiation holes are arranged on the lower part of the bottom shell, a power supply jack or a USB port are arranged on the side surface of the bottom shell; an annular rubber ring is arranged on the upper surface of the upper cover and composed of a support part, a clearance part and a transition part, namely an annular curved surface and a plurality of planes form irregular surfaces; a charging structure is arranged in the bottom shell and composed of a temperature sensor, a coil, a ferrite, an aluminum plate and a circuit board; the coil is arranged on the ferrite, the temperature sensor is arranged on the coil, the lower surface of the ferrite is adhered with the circuit board by the aluminum plate, one or several LED indication lamps are arranged on the circuit board, and the circuit board is used for receiving the external direct-current energy, conversing the direct-current energy into the alternative-current energy and generating an alternative-current magnetic field, and the electric energy is transmitted by the coil. The wireless charging device meets the Qi standard and is suitable for wirelessly charging various portable devices.