Electric bicycle magnetic coupling resonance type wireless charger

Abstract

The invention provides an electric bicycle magnetic coupling resonance type wireless charger which comprises a main circuit part and a control circuit part. The main circuit part comprises a full bridge rectifier and filter circuit, a half bridge inverter circuit, a transmitting end series resonance circuit, a receiving end series resonance circuit, a high frequency transformer T1 and a high frequency rectifier and filter circuit. The control circuit part comprises a receiving end voltage and current detection circuit, a receiving end charging data transmitting circuit, a transmitting end wireless data receiving circuit, a transmitting end current detection circuit, a phase-locked loop frequency tracking circuit, a PWM inverter control circuit and an inverter drive circuit. According to the invention, wireless charging is used to replace wired charging; electric bicycle magnetic coupling resonance type wireless charging is realized; sparks, which are produced in insertion and extraction processes, of a power supply plug are eliminated, and the troubles of influenced plug service life and poor contact are eliminated; the operation of charging is convenient; electrical energy transmission is carried out through resonance coupling; the electrical energy transmission frequency is reduced; and the influence of electromagnetic radiation on an environment is greatly reduced.

Description

technical field [0001] The invention relates to a magnetic coupling resonant wireless power transmission technology, in particular to a magnetic coupling resonant wireless charger for an electric bicycle. Background technique [0002] The chargers used in current electric bicycles are basically wired chargers. Electric sparks will be generated during the plugging and unplugging process of the power plug, which will affect the life of the plug and cause poor contact after a long time. In the technical field of electric bicycle charging, there is currently no mature wireless charging technology solution. [0003] The main problems of wireless charging at present are: First, the efficiency is not high. The main reason is that the control of energy is difficult, and the point-to-point transmission of energy cannot be truly realized. During the transmission process, part of the energy will be lost due to scattering, and the efficiency of the energy converter is not good. High is...

AI Technical Summary

Problems solved by technology

[0003] The main problems of wireless charging at present are: First, the efficiency is not high. The main reason is that the control of energy is difficult, and the point-to-point transmission of energy cannot be truly realized. During the transmission process, part of the energy will be lost due to scattering, and the efficiency of the energy converter is not good. High is also a key factor affecting the efficiency of the entire system; the second is the safety of electromagnetic radiation, the impact on personal safety and the surrounding environment needs to be resolved

Since the transmission of wireless energy is neither well controlled on the transmission path like traditional power supply methods, nor is it able to transmit tiny power like wireless communication, high energy density will inevitably affect personal safety

Images