Wireless charging electric energy transmitting device, electric energy receiving device and wireless charging system

The invention provides a wireless charging electric energy transmitting device, an electric energy receiving device and a wireless charging system. The electric energy transmitting device comprises a central processor and an ultrasonic transmitter which is electrically connected with the central processor, wherein the central processor is used for triggering the ultrasonic transmitter to acquire the position and required electric energy of the electric energy receiving device; the ultrasonic transmitter is controlled to work according to the position and the required electric energy of the electric energy receiving device; the ultrasonic transmitter is used for transmitting ultrasonic waves to acquire the position and the required electric energy of the electric energy receiving device under the trigger and control actions of the central processor, and is used for charging the electric energy receiving device. Correspondingly, the electric energy receiving device is used for receiving the ultrasonic waves transmitted by the electric energy transmitting device, and is used for performing subsequent charging operation according to the ultrasonic waves. Through the wireless charging electric energy transmitting device, the electric energy receiving device and the wireless charging system provided by the invention, the ultrasonic waves are adopted for wireless charging instead of electromagnetic waves, so that the problem of leakage of electromagnetic energy in wireless charging can be solved.