Wide-range vibration energy collector based on asymmetric-biplanar spring

Abstract

The invention provides a wide-range vibration energy collector based on an asymmetric-biplanar spring, and the energy collector comprises a shell, a connecting piece arranged in the shell, a permanent magnet, a first planar spring and a second planar spring, wherein the first planar spring and the second planar spring are mounted on the connecting piece, and the first planar spring and the second planar spring are fixed on the permanent magnet through the connecting piece. A coil is wound around the position, corresponding to the permanent magnet, of the shell, the first plane spring and the second plane spring are of an asymmetric-biplane spring structure and have different elastic coefficients, and when external vibration acts on the collector, the first plane spring and the second plane spring vibrate to drive the permanent magnet to move up and down and generate relative displacement with the coil fixed to the shell. The asymmetric structure is adopted, so that the collector has different vibration modes to realize wide bandwidth, the structure is simple, and the assembly difficulty is low; the asymmetric structure is adopted, the motion modes are diversified, the collection frequency band is wide, and the energy collector can collect vibration energy under two resonance points.

Description

technical field [0001] The invention relates to the field of micro-energy collection, in particular to a wide-range vibration energy harvester based on an asymmetric-biplane spring. Background technique [0002] With the rapid development of the Internet of Things, more and more wireless sensor networks and low-power electronic devices are widely used. At present, traditional chemical batteries are the main power supply for these electronic devices, and regular maintenance and replacement of batteries will consume a lot of manpower and material resources. In addition, chemical batteries will also pollute the environment. There is available energy in the working environment of low-power electronic devices, such as solar energy, wind energy, thermal energy, vibration energy, and the like. Vibration energy has the advantages of being not restricted by the environment and widely distributed. If these vibration energies can be collected to realize self-power supply of electronic...

AI Technical Summary

Problems solved by technology

The springs of the collector are four identical symmetrical springs, resulting in a single movement mode and a narrow collection frequency band

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