宽频压电振动俘能器的研究现状综述

In recent years, portable electronic devices, micro-electromechanical systems (MEMS) and wireless sensor networks have been widely used. The disadvantages of the batteries gradually become obvious. The piezoelectric vibration energy harvester can convert the ambient vibration energy to electric energy, so that the low-power microelectronic products can be wirelessly powered or self-powered. To enhance the environmental adaptability and improve the generating efficiency, the broadband piezoelectric energy harvesting turns to be a research hotspot. The principle, piezoelectric materials, and operation modes were presented firstly. The current status of the broadband piezoelectric energy harvester was reviewed. The problems in recent research work were summarized. Finally, the future research directions were proposed. The piezoelectric energy harvesting supplies a stable, safe, and enduring way to power the microelectronic products. It has a good application prospect.