A Vibration Energy Harvesting Device Based on Piezoelectric Stack and Electromagnetic Induction

Abstract

The invention discloses a vibration energy collection device based on piezoelectric stacking and electromagnetic induction. The device consists of a device base, a device frame, an amplitude amplification mechanism and an energy collection mechanism from bottom to top. The amplitude amplification mechanism includes a piezoelectric device and a magnet array. 1 and magnet array 2. The energy collection mechanism includes cantilever beams, magnet array 3, magnet array 4 and induction coils. Compared with other energy collection devices, this device utilizes vibration more fully and can obtain more The advantage of outputting energy.

Description

technical field [0001] The invention relates to the technical field of energy collection, in particular to a vibration energy collection device based on piezoelectric stacks and electromagnetic induction. Background technique [0002] With the rapid development of microelectromechanical technology, microelectronic technology, embedded technology and wireless communication technology, a large number of low-power electronic devices appear, but these devices rely heavily on the supply of external power. At present, the commonly used energy supply method is to supply energy to chemical batteries, but the life of chemical batteries is limited, which seriously restricts the performance of the device itself. Given the low power consumption of the device, extracting energy from the device's surrounding environment to power the device is an ideal alternative. The energy contained in the environment mainly includes solar energy, wind energy, tidal energy, and mechanical vibration ene...

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Problems solved by technology

At present, scholars at home and abroad have developed a large number of vibration energy harvesters, but there are generally problems of narrow working bandwidth, low output power (voltage) or complex structure.

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