Improved wireless power supply system based on Tesla coil

Abstract

The invention discloses an improved wireless power supply system based on a Tesla coil in the wireless charging field. The system comprises an emission unit and a reception unit. The emission unit isused for emitting an energy signal to a space; and the reception unit is used for receiving the energy signal sent by the emission unit. The emission unit comprises an oscillator, a power amplifier, apower supply and a transmitting coil. The transmitting coil comprises a primary coil, a secondary coil and a voltage balancer arranged on the top portion of the secondary coil. The primary coil is connected with the power amplifier. The system is characterized in that the voltage balancer is in a circular ring structure, the cross section of which is in a circular ring shape; the voltage balanceris formed by nesting at least two sections of arc structures; and the voltage balancer is a whole circle when unfolded, and can be nested into one arc section. The voltage balancer is processed intothe mutually-nested circular ring structures, so that the transmitting direction is changeable, and energy transmission efficiency is improved; and the system can be used in wireless charging of a wearable device.

Description

technical field [0001] The present invention relates to a wireless power supply system, in particular to a wireless power supply system for wearable devices. Background technique [0002] For the wireless power supply system based on the Tesla coil, its circuit model can be simplified as two resonant circuits coupled by air inductance, such as figure 1 As shown, the primary circuit in this model is composed of the spark gap and the primary capacitor C1 connected in series, the primary coil L1 and the circuit equivalent resistance R1; the spark gap represents all components or circuits that can output high-frequency voltage signals ; The secondary circuit is mainly composed of the secondary coil L2, the circuit equivalent resistance R2 and the parasitic capacitance C2 at the top of the secondary coil; the parasitic capacitance C2 is mainly composed of the air between the secondary coil and the receiving end. The primary circuit and the secondary circuit are connected togethe...

AI Technical Summary

Problems solved by technology

This limits the flexibility and mobility of some wearable devices

In the traditional Tesla coil, the signal generating circuit and the power supply at the transmitting end are in an integrated structure, which is not convenient for maintenance, hardware upgrade and subsequent function expansion.

And its transmitting antenna is an omnidirectional antenna, and the transmitting direction cannot be adjusted, which will affect the transmission efficiency in certain scenes such as corners

In addition, the traditional Tesla coil also lacks a matching movable receiving end

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