Novel electromagnetic energy harvester based on vibration of magnetic ball

Abstract

The invention is a novel electromagnetic energy harvester based on magnetic ball vibration, which includes an elastic base, a barrier spring plate, a fixed magnet, a coil, a spherical magnet, an external frame and an upper base plate. The coil is fixed on the elastic base; the blocking spring plate is fixed on the inner side of the outer frame, between the coil and the fixed magnet; the spherical magnet has two different magnetic poles up and down; the fixed magnet is facing the coil, and The spherical magnets attract each other to ensure that the spherical magnets will not rotate when they move; there are two air vents on the upper part of the upper base plate to ensure that the air inside the energy harvester will not be disturbed by the total closure and affect the movement of the magnets. The invention has a simple structure, is easy to manufacture, is applicable to environments with random, low-frequency, and small-amplitude vibrations, 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 is easier to miniaturize the 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

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