Piezoelectric energy harvesters can convert vibration energy into electrical energy to meet the energy supply of low-power products through a self-powered method.However,most piezoelectric energy harvesting technologies mainly adopt the lin-ear vibration principle of the cantilever beam,and its narrow effective frequency bandwidth greatly limits the application of piezo-electric energy harvesters in practice.Therefore,it becomes a hot research topic in the field of piezoelectric to improve the efficiency of energy harvesting by broadening the working bandwidth of piezoelectric energy harvesters.The broadband technology of nonlin-ear piezoelectric energy harvesters is summarized and analyzed.Working principles,common piezoelectric materials and working modes of piezoelectric energy harvesters are presented and some research hotspots and key technical issues in recent years are sum-marized.Also,the development direction of piezoelectric energy harvesters in the future is predicted.
Piezoelectric Energy HarvestersEnergy HarvestingBroadband TechnologySelf-Power
NETL
NSTL
维普
万方数据
