Piezoelectric multi-directional vibration energy acquisition device

Abstract

The invention relates to a piezoelectric multi-directional vibration energy acquisition device, and belongs to the technical field of new energy and power generation. The piezoelectric multi-directional vibration energy acquisition device comprises a shell, a mass block, elastic pre-bending metal strips, permanent magnets and a round piezoelectric vibrator, wherein the shell is of a hollow cuboid structure, the round piezoelectric vibrator is fixed on the shell by a screw and is formed by pasting a metal substrate and a piezoelectric chip, the permanent magnets are pasted at ends of the center, near to the piezoelectric chip, of the round piezoelectric vibrator, the elastic pre-bending metal strips are respectively and fixedly arranged at top points of the shell, the mass block is connected with the other ends of the elastic pre-bending metal strips and is of a cuboid structure, the permanent magnets are respectively embedded onto surfaces of the mass block, and the permanent magnets at the center of the round piezoelectric vibrator and the permanent magnets embedded onto the mass block are arranged in a way that same magnetic poles are opposite. The piezoelectric multi-directional vibration energy acquisition device has the characteristics and the advantages that the mass block is pulled by the elastic pre-bending metal strips, so that the piezoelectric vibrator is simulated by a method of a mutual effect of a pair of permanent magnets, and low-frequency vibration energy recovery in an arbitrary direction can be achieved.

Description

technical field [0001] The invention belongs to the technical field of new energy and power generation, and in particular relates to a piezoelectric multi-directional vibration energy collector, which is used for low-frequency, large-amplitude, multi-directional vibration energy collection. Background technique [0002] Micro power generation devices that use piezoelectric ceramic materials to recover environmental vibration energy have become a research hotspot for many years at home and abroad. The successful development and utilization of piezoelectric vibration energy harvesters can not only solve the power supply problems of portable micro-power electronic products and remote implanted sensor monitoring systems, but also help reduce the waste of resources caused by a large number of waste batteries polluting the environment and producing batteries question. According to the characteristics of environmental vibration and different application purposes, many types of pie...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a piezoelectric multi-directional vibration energy harvester to solve the problems of high natural frequency, large-amplitude vibration damage, and inability to collect multi-directional vibration energy in existing piezoelectric material power generation devices.

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