Background: Due to the shortage of energy resources, the problem of energy consumption
has attracted much more attention. How to reduce the energy consumption or obtain the regenerative
energy becomes one of the hot topics. To solve this problem, the vibration energy recovery device has
an increasing development. The working principle of the vibration energy recovery device can be divided
into three types: piezoelectric effect, electrostatic effect and electromagnetic effect. The vibration
energy recovery device of the piezoelectric effect is widely used. It mainly uses piezoelectric materials
to convert vibration energy into electrical energy. When external vibrations apply stress to the piezoelectric
material, the positive and negative charge centers inside the piezoelectric material are moved
relatively to produce an electrode. Therefore, the voltage is generated on both sides of the piezoelectric
Objective: In order to know the latest development of the vibration energy recovery device and reduce
the energy consumption.
Methods: Firstly, the structure and working principle of the vibration energy recovery device has been
discussed. Secondly, the paper reviews recent patents of the piezoelectric vibration energy recovery
device. Meanwhile, the advantages and disadvantages have been clearly discussed through the analysis
of the structure and working principle of these patents.
Results: Compared with the traditional devices and structures, the new ones have and can convert vibration
energy of multiple directions into electric energy. Moreover, the expenses of the vibration energy
recovery device will be reduced by designing the new devices.
Conclusion: The patents of the vibration energy recovery device utilizing piezoelectric effect have
solved several problems. However, these devices still need more improvements to increase the application