Vibration-type magnetoelectric energy harvester

Abstract

The invention relates to the technical field of new energy and power generation, and aims at providing a vibration-type magnetoelectric energy harvester capable of converting vibration energy of an external environment into electric energy. The energy harvester comprises a magnetic shielding box 1; an upper permanent magnet 2 fixed on a bottom surface of the magnetic shielding box 1; a lower permanent magnet 7 fixed on a lower surface of the magnetic shielding box 1; a large magnetic ring 4, an annular magnetic structure 5 and a small magnetic ring 6. The large magnetic ring 4, the annular magnetoelectric structure 5 and the small magnetic ring 6 are nested sequentially, wherein the large magnetic ring 4 is located at the outermost side, and the small magnetic ring 6 is located at the innermost side. The energy harvester also comprises a magnetic support member 3 which passes through the small magnetic ring 6 to be connected with the upper permanent magnet 2 and the lower permanent magnet 7. The energy harvester also comprises an electrode lead 9 connected with the annular magnetoelectric structure 5. The upper permanent magnet 2, the lower permanent magnet 7, the large magnetic ring 4, the annular magnetoelectric structure 5, the small magnetic ring 6, and the magnetic support member 3 are all placed inside the magnetic shielding box 1, and the electrode lead 9 is led out of the magnetic shielding box 1.

Description

technical field [0001] The invention relates to the technical field of new energy and power generation, in particular to a vibrating magnetoelectric energy harvester. Background technique [0002] At present, with the continuous development and progress of micro-electromechanical system technology and integrated circuit packaging technology, various electronic devices are gradually developing towards the goal of miniaturization, easy portability, and low power consumption, and are increasingly used in weapon manufacturing, information Communications, intelligent equipment, biomedicine and other fields have broad prospects for development. However, chemical batteries are still the main energy supply method for MEMS today. Traditional chemical batteries have many limitations. For example, the battery is large and cannot be placed in a limited space; the power supply time is limited, and it needs to be replaced when the battery is exhausted. or recharging; discarded chemical b...

AI Technical Summary

Problems solved by technology

However, chemical batteries are still the main energy supply method for MEMS today. Traditional chemical batteries have many limitations. For example, the battery is large and cannot be placed in a limited space; the power supply time is limited, and it needs to be replaced when the battery is exhausted. or recharging; discarded chemical batteries are not easy to recycle and reuse, which will cause great environmental pollution

These factors greatly limit the development and application of MEMS, so it is necessary to design a new power supply technology to supply energy for the stable operation of MEMS

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