Self-aligning wireless charging device and working method thereof, and wireless charging system

Abstract

The invention provides a self-aligning wireless charging device and a working method thereof, and a wireless charging system. The device comprises a control circuit, a transmitting coil and a plurality of electromagnets; the transmitting coil and all the electromagnets are electrically connected with the control circuit, and all the electromagnets are uniformly distributed at the periphery of thetransmitting coil. The method comprises the steps: judging whether an object enters or not, and if the object enters, sending a handshake communication signal through the transmitting coil; if handshake communication succeeds, supplying power to the electromagnets for magnetic attraction operation; acquiring the intensity of a first signal received by the transmitting coil during the first communication and the intensity of a second signal received by the transmitting coil after the magnetic attraction operation is completed; and if the second signal intensity is greater than or equal to the first signal intensity, starting charging operation. The system applies the device. The applied self-alignment wireless charging device is simple in structure, interference to other electronic equipment can be reduced, and the alignment degree is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless charging, in particular to a self-aligned wireless charging device, a working method of the self-aligning wireless charging device, and a wireless charging system using the self-aligning wireless charging device. Background technique [0002] In order to improve the safety of the wireless charging system and the effect of power transmission, the current common practice is to set up a self-aligning structure so that the transmitting coil and the receiving coil can be accurately docked. The following four self-alignment solutions are currently known: 1. Using magnet alignment solutions, for example, the magnetic charger on the Apple Watch, the MagSafe charger and Qi’s early A1 coil solution, which has alignment accuracy High advantages, but it will affect other electronic devices, and it is not compatible with the current Qi wireless charging system; 2. Using the scheme of multiple transmit...

AI Technical Summary

Problems solved by technology

The following four self-alignment solutions are currently known: 1. Using magnet alignment solutions, for example, the magnetic charger on the Apple Watch, the MagSafe charger and Qi’s early A1 coil solution, which has alignment accuracy High advantages, but it will affect other electronic devices, and it is not compatible with the current Qi wireless charging system; 2. Using the scheme of multiple transmitting coils, arrange multiple transmitting coils in a certain plane, and select the transmitting coil closest to the receiving coil For energy transmission, it has the advantage of free placement, but requires multiple transmitting coils, which is costly, and the closest coil selected still has the possibility of large alignment deviation; 3. Use the moving transmitting coil to achieve alignment, Generally, a coil moving structure with at

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