Wireless charging transmitting terminal system and control method

Abstract

The invention relates to a wireless charging transmitting terminal system and a control method. The system comprises at least two transmitting coils, at least two transmitting circuit units, a detection circuit, a communication module and a controller, wherein each transmitting circuit unit is electrically connected with each transmitting coil, the detection circuit is electrically connected witheach transmitting circuit unit, the detection circuit and the communication module are used for obtaining the coupling relation between each transmitting coil and a receiving coil, the controller is electrically connected with the detection circuit, each transmitting circuit unit and the communication module, and the controller controls the current output by each transmitting circuit unit according to the obtained coupling relation so as to control the current parameter of each transmitting coil. According to the invention, the controller provides proper current amplitude and current phase foreach transmitting coil by controlling the multiple transmitting circuit units so as to control the superimposed magnetic field generated by the current on the plurality of transmitting coils, and then charges receiving end equipment through the superimposed magnetic field, so that the wireless power transmission efficiency is improved.

Description

technical field [0001] The present invention relates to the field of wireless charging, in particular to a wireless charging transmitter system and a control method. Background technique [0002] With the development of smart terminals, wireless charging has gradually become a standard function of high-end smart terminals. Since energy is transmitted between the charger and the smart terminal using a magnetic field, there is no need for wires to connect the two. Both the charger and the smart terminal can have no exposed conductive contacts, and wireless charging can achieve relatively long-distance wireless energy conversion. , making the charging of smart terminals more free, therefore, wireless charging technology is more and more widely used. [0003] However, in the current traditional technology, for the wireless charging system of smart terminals, the wireless charging transmitter is mostly based on the charging base. The Qi standard-based wireless charging base con...

AI Technical Summary

Problems solved by technology

Once the distance between the smart terminal and the launch base increases or the alignment is not accurate, wireless charging cannot be carried out smoothly

The system using the high-frequency wireless charging standard Airfuel Alliance, although the charging distance and the degree of freedom on the plane have been increased by increasing the operating frequency, its technology is still based on the single-directional magnetic field generated by the transmitting coil to charge the smart terminal. Therefore, there are still many requirements for the posture of the smart terminal, which greatly limits the interaction between the smart terminal user and the smart terminal during wireless charging, and limits the range of freedom of the smart terminal for wireless charging, and the user experience is not good.

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