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<p>Energy harvesting technology has gained popularity to address energy source challenges in vehicle technology. This study presents an optimized Piezoelectric Energy Harvester (PEH) using flexible materials to overcome fragility issues. The PEH is modelled using COMSOL Multiphysics 6.0 software, and the piezoelectric layer optimization is achieved with the Teacher-Learning Based Optimization (TLBO) algorithm. The influence of the optimized flexible piezoelectric layer’s location on the substrate was analysed. The designed PEH is fabricated using the doctor blade coating method and experimentally tested. A maximum voltage of 3.4&#xa0;V was generated under mechanical input from the tyre of a laboratory quarter-car system. The PEH produced a peak power of 286&#xa0;nW under a 110&#xa0;N mechanical input when the piezoelectric material is placed in the Fix-C position. The optimized flexible PEH demonstrated significantly higher output compared to the unoptimized PEH.</p>

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Design and fabrication of an optimized flexible piezoelectric energy harvester for smart vehicle application

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • V. Thulasi,
  • P. Lakshmi,
  • J. Arunguvai

摘要

Energy harvesting technology has gained popularity to address energy source challenges in vehicle technology. This study presents an optimized Piezoelectric Energy Harvester (PEH) using flexible materials to overcome fragility issues. The PEH is modelled using COMSOL Multiphysics 6.0 software, and the piezoelectric layer optimization is achieved with the Teacher-Learning Based Optimization (TLBO) algorithm. The influence of the optimized flexible piezoelectric layer’s location on the substrate was analysed. The designed PEH is fabricated using the doctor blade coating method and experimentally tested. A maximum voltage of 3.4 V was generated under mechanical input from the tyre of a laboratory quarter-car system. The PEH produced a peak power of 286 nW under a 110 N mechanical input when the piezoelectric material is placed in the Fix-C position. The optimized flexible PEH demonstrated significantly higher output compared to the unoptimized PEH.