Wireless charging system with multi-load frequency adaptability

Abstract

Disclosed is a wireless charging system with multi-load frequency adaptability. A primary electric energy transmitting device comprises a rectifying and filtering circuit, a DC / DC conversion circuit, a drive and control circuit, an inverse circuit, a transmitting coil, an information receiving and processing circuit, a resonance compensation capacitor array and a resonance compensation inductor array. A secondary electric equipment device comprises a receiving coil, a resonance compensation circuit, a high-frequency rectifying and filtering circuit, a drive and control circuit, an information management and feedback circuit, a DC / DC conversion circuit and a battery. The information receiving and processing circuit of the primary electric energy transmitting device receives feature information fed back by the information management and feedback circuit of the secondary electric equipment device by means of wireless bluetooth communication, electric energy output frequency of the inverse circuit is controlled according to the feature information, and a working mode of the primary electric energy transmitting device is determined according to capacitor and inductor combination modes in the resonance compensation capacitor array and the resonance compensation inductor array.

Description

technical field [0001] The invention relates to a wireless charging device. Background technique [0002] The electromagnetic induction wireless charging system is usually composed of a primary power transmitting subsystem and a secondary power receiving subsystem. The high-frequency electromagnetic field coupling between the primary and secondary subsystems realizes the wireless transmission of power. characteristics, so that it has been widely used. [0003] The primary power transmission subsystem of the known wireless charging system can effectively wirelessly charge one or more secondary subsystems, but such systems have several problems in practical applications: [0004] First of all, the primary and secondary operating frequencies of the known wireless charging system are fixed, requiring the primary power transmitting device and the secondary power receiving device to correspond to each other, the system has poor portability and adaptability, and cannot meet the ch...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings that the existing wireless charging system cannot meet the charging requirements of specific resonant frequency electrical equipment, and cannot meet the power and efficiency requirements of different resonant frequency electrical equipment when charging simultaneously, and proposes a multi-load Frequency Adaptive Wireless Charging Device

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