一种道路用小型压电发电及储存装置的研究

为了收集并利用汽车通过公路时所产生的振动能量，设计了一种利用压电材料的正压电效应采集环境振动能量，把振动能转换成电能的道路用振动发电装置。为使压电材料和道路振动能巧妙结合从而吸收最大的外部能量，获得高的发电效率，进行了以下研究：分析了压电材料变形量对发电能力的影响，并设计了能找到压电材料产生最大电能的最小变形量的模型。通过实验分析压电片的联接方式对电能输出的影响，得到了以并联为主,串联为辅的混联电路模型。设计并制作了道路用压电发电装置模型，通过模拟实验测得其发电功率为0.061 2 W，电容储电功率为0.026 4 W，发电效率为14.42%，电容储电效率6.21%。

Research on the Piezoelectric Power Generation and Energy Storage Device for Urban Roads

In order to collect the vibration energy when cars through the road, a vibration generation device based on piezoelectric materials is designed to transform vibrational energy into electricity, collecting maximum vibration energy from the environment. For purpose of absorbing the maximum external energy, the following research is completed. The influence of the deformation of piezoelectric material to generate electricity is analyzed, and a model which can find the minimum deformation of piezoelectric materials to produce maximum electricity is designed. A hybrid circuit model mainly in parallel and secondly in series is made based on the analyzing of the influence of the link method of piezoelectric patches to the electrical energy output. A piezoelectric generation device is made and experiments show the power of electrical energy output is 0.061 2 W, capacitors store electrical power is 0.026 4 W, power generation efficiency is 14.42%, and capacity storage efficiency is 6.21%.