Optimized testing of package for stacked piezoelectric energy harvester in roadway applications

IF 1.3 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER Ferroelectrics Letters Section Pub Date : 2021-11-01 DOI:10.1080/07315171.2021.1971010

Peng Wang, Run Cheng, G. Ding, Jun Wang, Zhiming Liu, Haotong Zhang

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引用次数: 5

Abstract

Abstract Piezoelectric energy harvester (PEH) applied in collection and conversion of mechanical energy on roadway has attracted widely attentions in recent years. This study aims to improve a new type of road-compatible stacked PEH (sPEH), which consists of six PZT stacked piezoelectric transducers connected in parallel and a matched package to better the output efficiency and working life of sPEH. Uniaxial compression tests are conducted to measure the output power, voltage and current of the sPEH. The package of the sPEH is optimized depending on the sensitivity of the output to loading amplitude, frequency, package material and cover thicknesses. Tests results show that the output of the sPEH increases as increasing load amplitude and frequency. The sPEH with a package being polyethylene and 3 mm thick exhibited up to maximum output of 21.97 mA power and 8.59 W/m2 power density which successfully charges a lithium battery in 24 h. Finally, the protection of package against the erosion of environment and crushing of traffic load in road application was verified by immersion and compression test.

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道路应用中堆叠式压电能量采集器封装优化测试

压电能量采集器(PEH)用于巷道机械能量的收集和转换，近年来受到了广泛关注。本研究旨在改进一种新型道路兼容堆叠式压电换能器(sPEH)，该换能器由6个PZT堆叠式压电换能器并联连接和匹配封装组成，以提高sPEH的输出效率和工作寿命。进行了单轴压缩试验，测量了sPEH的输出功率、电压和电流。sPEH的封装根据输出对加载幅度、频率、封装材料和覆盖厚度的灵敏度进行了优化。试验结果表明，随着负载幅值和频率的增加，sPEH的输出增大。封装为聚乙烯，厚度为3毫米的sPEH最大输出功率为21.97 mA，功率密度为8.59 W/m2，可在24小时内成功为锂电池充电。最后，通过浸没和压缩试验，验证了复合材料在道路应用中对环境侵蚀和交通荷载破碎的保护作用。

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来源期刊

Ferroelectrics Letters Section 物理-物理：凝聚态物理

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

4.8 months

期刊介绍： Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.