Novel electromagnetic energy harvester based on vibration of magnetic ball

Abstract

The invention is a novel electromagnetic energy harvester based on vibration of a magnetic ball, comprising an elastic base, a blocking spring plate, a fixed magnet, a coil, a spherical magnet, an external frame and an upper substrate. The coil is fixed on the elastic base; the blocking spring plate is fixed inside the outer frame and between the coil and the fixed magnet; the spherical magnet hastwo different magnetic poles up and down; the fixed magnet is facing the coil and mutually attracts with the spherical magnet to ensure that the spherical magnet does not rotate when it moves; and there are two vents in the upper part of the upper substrate to ensure that the internal air of the energy harvester cannot disturbs due to the full closure to affect the movement of the magnet. The energy harvester has a simple structure, is easy to manufacture, can be applied to a random, low-frequency, small-vibration environment and has enhanced environmental adaptability. The free-springing design of the spherical magnet increases the contact area between the magnet and the coil, reduces the design space, improves the discharge efficiency, and facilitates the miniaturized design.

Description

technical field [0001] The invention relates to a novel electromagnetic energy harvester based on the vibration of magnetic balls, which can effectively collect random vibration mechanical energy in the surrounding environment for power generation, and belongs to the field of energy-saving technology and regenerative, environmentally friendly and new energy. Background technique [0002] Currently, most low-power devices (such as wireless sensors and transmitters, medical implant sensors, and portable electronic devices) rely on electrochemical batteries for power. However, electrochemical batteries have problems such as short life, high cost, and environmental pollution caused by disposal of waste batteries, so researchers are actively looking for a new energy source to replace electrochemical batteries for powering low-power devices. In addition, the continuous development of microelectronics technology has greatly reduced the energy consumption of low-power devices, so it...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of large design structure, low power generation efficiency, poor low-frequency adaptability, and poor environmental adaptability of the current electromagnetic energy harvesting device. For this purpose, a new type of electromagnetic energy harvesting device based on magnetic ball vibration is provided, so that the electromagnetic power generating device can More adaptable to random, broadband, low-frequency, small-amplitude vibrations in the environment, improving energy recovery efficiency

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