Charging device, receiving device and wireless charging system and wireless charging method thereof

The invention relates to a charging device, a receiving device and a wireless charging system and a wireless charging method thereof. By means of the charging device, the receiving device, the wireless charging system and the wireless charging method, the problem that the charging information in the prior art cannot be displayed by a displayer is solved. By means of the technical scheme, the wireless charging system comprises the charging device and the receiving device, wherein the charging device is provided with an emitting coil and a displayer, and the receiving device is provided with a slot and a secondary coil and comprises a charging detection module, a coding module, an information storing module and a first radio frequency module. The charging detection module is respectively connected with the slot, the coding module and the first radio frequency module, and the coding module and the information storing module are connected with the first radio frequency module. The charging device comprises a second radio frequency module, a decoding module, an information processing and display control module and a control module, wherein the second radio frequency module is connected with the decoding module, the decoding module is connected with the information processing and display control module, and the information processing and display control module is respectively connected with the control module and the displayer. The charging device, the receiving device, the wireless charging system and the wireless charging method are suitable for wireless charging devices with the screen display function.