Resonance circuit based on chip

Abstract

The invention discloses a resonance circuit based on a chip and relates to the technical field of resonance tuning. The resonance circuit comprises a square wave generation module, a resonance module, a voltage and current sampling module, a phase difference detection module, a main control module, a driving module, a phase control module and an output processing module; the square wave generation module is used for generating square wave signals; the resonance module is used for generating voltage division signals; the voltage and current sampling module is used for sampling voltage and current signals; the phase difference detection module is used for detecting voltage and current phase differences; the main control module is used for receiving processing signals and outputting driving signals; the driving module is used for outputting the driving signals; and the phase control module is used for controlling phase shift. According to the resonant circuit based on the chip, a microcontroller is adopted to control a full-control device to realize phase shift control of inductive current, so that dynamic real-time tuning control is performed on the resonant circuit; and a Hall current sensor, an operational amplifier and a logic chip are further utilized to improve the voltage and current phase difference detection precision.

Description

technical field [0001] The invention relates to the technical field of resonance tuning, in particular to a chip-based resonance circuit. Background technique [0002] For a passive one-port network including capacitance, inductance, and resistance elements, its ports may exhibit capacitive, inductive, and resistive properties. When the voltage U and current I at the circuit port appear in the same phase and the circuit is resistive, it is called Resonance phenomenon, such a circuit is called a resonant circuit. In the field of wireless transmission supply, the traditional resonant circuit is controlled by simple LLC resonant converter for frequency modulation. When the electric energy output by the resonant circuit is transmitted wirelessly and the distance changes, The resonant frequency will drift, so that the system cannot be maintained in the resonant state, resulting in a decrease in the transmission performance of the system, and it cannot be intelligently tuned accor...

AI Technical Summary

Problems solved by technology

[0002] For a passive one-port network including capacitance, inductance, and resistance elements, its ports may exhibit capacitive, inductive, and resistive properties. When the voltage U and current I at the circuit port appear in the same phase and the circuit is resistive, it is called Resonance phenomenon, such a circuit is called a resonant circuit. In the field of wireless transmission supply, the traditional resonant circuit is controlled by simple LLC resonant converter for frequency modulation. When the electric energy output by the resonant circuit is transmitted wirelessly and the distance changes, The resonant frequency will drift, so that the system cannot be maintained in the resonant state, resulting in a decrease in the transmission performance of the system, and it cannot be intelligently tuned according to the chip, resulting in a phase difference between the voltage and current at the output end of the resonant network, thereby improving the resonant soft switching topology. loss, soft switching stress increases

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