Papers by Author: Xiao Zhen Du

Abstract: High output power can be obtained by optimizing the piezoelectric battery structure parameters. Several piezoelectric battery prototypes with dimensions around 30mm×8mm×1mm have been set up to test the power from ambient vibration harvesting. Output power generation of 130 µW at 93.2 Hz is obtained for a typical device with cantilever beam width 8mm. The test results are consistent with the theory analysis and indicate that a piezoelectric battery for ambient vibration energy harvesting is a promising electric power source for wireless sensors nodes with micro-power consumption.

Abstract: This paper presents a theory model based on the vibration and piezoelectric coupling mechanism. The aim is to discuss the optimization parameters for the design of a piezoelectric battery. The simulation results show the dependence of output power on external load and the device structure. High output power can be obtained by optimizing the piezoelectric battery structure parameters. Theory analysis and indicate that a piezoelectric battery for ambient vibration energy harvesting is a promising electric power source for wireless sensors nodes.