The invention relates to a bicycle
wireless charging device which comprises a center shaft communicating
pipe, a
crank and a charging mechanism, and the charging mechanism comprises a non-
metal cylinder which is fixedly connected to a bicycle center shaft and inserted into the center shaft communicating
pipe. The charging device comprises a non-
metal cylinder, a center shaft communicating
pipe, a transmitting end coil wound on the non-
metal cylinder, a receiving end coil wound on the side wall of the center shaft communicating pipe and coupled with the transmitting end coil, a charging module fixed on the non-
metal cylinder and connected with the transmitting end coil, and a rectification module fixed in the center shaft communicating pipe and connected with the receiving end coil. According to the bicycle
wireless charging device, the receiving end coil is arranged in the hollow middle shaft communicating pipe, the structural design that the cylindrical sending end equipment is inserted in a matched mode is adopted, more space is provided, the number of winding turns of the
induction coil and the coil
coupling degree are improved, the charging efficiency is improved, meanwhile, the whole charging mechanism is arranged in the middle shaft and the middle shaft communicating pipe, and the charging efficiency is improved. And the extension circuit is sealed by glue, so that comprehensive protection of the charging mechanism is realized.