Wireless charging system and method

Abstract

The invention relates to a wireless charging system and method. The wireless charging system comprises a charging device and an electric device, wherein the charging device comprises an AC-DC (Alternating Current-Direct Current) module, an oscillation module, an excitation module and a wireless emission coil, wherein the AC-DC module is used for converting an external AC power supply for supplying power to the charging device into a stable DC power supply; the oscillation module is used for converting the stable DC power supply into a high-frequency AC power supply; the excitation module is used for amplifying the high-frequency AC power supply; the wireless emission coil is used for emitting the amplified high-frequency AC power supply; and the electric device comprises a storage capacitor, a wireless receiving coil, a rectifying module and a secondary control module, wherein the storage capacitor is used for supplying power to the electric device, the wireless receiving coil is used for receiving the amplified high-frequency AC power supply emitted from the wireless emission module, the rectifying module is used for rectifying the power supply received by the wireless receiving coil, and the secondary control module is used for adjusting the output of the rectifying module and charging the storage capacitor. According to the wireless charging system and method, a non-contact, safe and reliable wireless charging mode convenient for operation is provided.

Description

technical field [0001] The invention relates to a wireless charging system and a wireless charging method. Background technique [0002] In recent years, with the development of capacitor technology, capacitors capable of storing large amounts of energy in the form of electrostatic charges have emerged, such as supercapacitors, supercapacitors or pseudocapacitors, and other forms of capacitors capable of storing large amounts of energy in the form of electrostatic charges. Capacitors are an alternative rechargeable device that can replace electrochemical batteries, capable of quickly absorbing energy and releasing the stored energy as compared to common electrochemical types of batteries. [0003] For example, Chinese patent application 200780018215.4 published on June 3, 2009 discloses a capacitor-based charger and a screwdriver powered by a supercapacitor. In use, when the screwdriver is installed on the charger, the supercapacitor in the screwdriver is electrically conne...

AI Technical Summary

Problems solved by technology

However, as the use time increases, the friction between the electrical contact terminals of the screwdriver, electrical contact piece, and charger will increase, which will inevitably wear out, which will lead to unreliable contact, short circuit and other risks. The traditional charging method is very inconvenient to use. The user must accurately install the screwdriver on the charger to realize charging. Therefore, it is urgent to provide a charging system and charging method that does not require contact, does not have wear and tear, and is easy to operate.

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