Power management module, management method and energy system of triboelectric nanogenerator

Abstract

The invention discloses a power management module, a management method and an energy system of a friction nanogenerator, belonging to the technical field of power electronics. Wherein the power management module is configured to be electrically connected to the back end of the friction nanogenerator, including a rectification circuit and a DC step-down circuit, wherein the rectification circuit is electrically connected to the back end of the friction nanogenerator, and is used to generate electricity by the friction nanogenerator The signal generated by the machine is rectified to output the first DC signal; the DC step-down circuit is electrically connected to the rear end of the rectifier circuit, and includes an autonomous switching circuit for stepping down the first DC signal and outputting the second DC signal. DC signal. The power management module of the present invention can maximize and autonomously release the energy of the friction nanogenerator, and perform step-down conversion for charging the energy storage device or directly driving the electronic device.

Description

technical field [0001] The invention relates to the field of circuit management, further relates to a power management module of a triboelectric nanogenerator, an energy system including the power management module, a power management method of a triboelectric nanogenerator and a triboelectronic energy extraction device. Background technique [0002] Triboelectric nanogenerators have shown great advantages and potential applications in the harvesting of human kinetic energy and environmental mechanical energy. The research report of IDTechEx predicts that the market size of triboelectric energy harvesting in the sensor field will reach 400 million US dollars in 2027, which is a new energy technology with broad market prospects. At present, the triboelectric nanogenerator can reach 500W / m 2 The output power can meet the application requirements of many low-power systems in terms of indicators. However, the triboelectric nanogenerator is restricted by the high output impeda...

AI Technical Summary

Problems solved by technology

Among them, the power management method based on mechanical switches, due to the limited number of switches and voltage conversion ratio, the system structure design is very complicated; the power management based on traditional transformers is only suitable for high-frequency AC signal transformation and the transformer volume and quality are large; The power management of the internal power supply electronic switch has a large circuit size and a large internal leakage current, which requires pre-stored power to work, and the circuit efficiency is limited

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