Miniature electromagnetic swing-type energy harvester

Abstract

The invention relates to a miniature electromagnetic swing-type energy harvester, especially an energy harvester which employs mechanical swinging and electromagnetic induction principles, and belongs to the technical field of new energy and power generation. The interior of a housing is provided with a drive device, a supporting spring, an electromagnetic power generation device, an energy storage circuit, a switch, and an output interface. The drive device and the electromagnetic power generation device carry out transmission in a gear mode. The electromagnetic power generation device is connected with the switch and the energy storage circuit, and the energy storage circuit is connected with an output interface. The energy harvester employs the half-gear mechanical reciprocating rotation of the drive device and the magnetic induction line cutting motion of the power generation device for power generation. Compared with a conventional electromagnetic energy harvester, the energy harvester is more reliable and stable. Moreover, the energy harvester can make the most of the motion of a human body or the vibration of an environment, and enables the swinging kinetic energy to be converted into electric energy. The energy harvester employs a closed-type structure, avoids a housing seam needed for the replacement of a cell, and meets the requirements of application in a severe environment.

Description

technical field [0001] The invention relates to a small electromagnetic swing type energy harvester, in particular to an energy harvester utilizing the principles of mechanical swing and electromagnetic induction, and belongs to the technical field of new energy and power generation. Background technique [0002] At present, with the rapid development of modern integrated circuit technology and microelectromechanical system (MEMS) technology, various MEMS devices or systems and low-power electronic products are increasingly applied to aerospace, weapon industry, biomedicine, structural health monitoring, etc. At present, chemical batteries are still used to power these systems or devices, but the use of chemical batteries has relatively prominent problems: the weight and volume are large, and they cannot be used in systems with small working spaces; the energy supply life is limited, and the energy needs to be repeated when the energy is exhausted. Charge or replace; the po...

AI Technical Summary

Problems solved by technology

At present, chemical batteries are still used to power these systems or devices, but there are more prominent problems in using chemical batteries: they are heavy and bulky, and cannot be used in systems with small working spaces; Recharging or replacement; greater pollution to the environment

In addition, traditional electromagnetic energy harvesters are usually open structures and cannot work in extreme environments

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