A lever-type piezoelectric energy harvester with deformation-guiding mechanism for electric vehicle charging station on smart road

Deok Hwan Jeon, Jae Yong Cho, Jeong Pil Jhun, Jung Hwan Ahn, Sinwoo Jeong, Se Yeong Jeong, Anuruddh Kumar, Chul Hee Ryu, Wonseop Hwang, Hansun Park, Cheulho Chang, Hyoungjin Lee, Tae Hyun Sung

Research output: Contribution to journalArticlepeer-review

Abstract

To meet the increasing demand for electric vehicles, this paper presents a novel concept to enhance the energy generation performance of piezoelectric energy harvesters used as charging stations on roads. A lever-type piezoelectric energy harvester with a deformation-guiding mechanism was designed and fabricated to overcome the existing limitations of low electrical output and low durability of piezoelectricity under extremely low road displacement conditions of 1 mm. The proposed harvester achieved a maximum output power of 60.3 mW at a load resistance of 50 kΩ under an input displacement of 1 mm. Thus, the module's electrical performance was significantly higher than that obtained in previous similar studies. The proposed harvester had 467% higher output power than the previously proposed vibration type road energy harvester. For the energy storage test, a 0.08 F supercapacitor was charged up to 5.09 V (1 J) in 170 min. The results prove that the energy generated by the proposed harvester can be potentially used as a power source for electric vehicles on smart roads beyond the power supply of various sensor systems on the road.

Original languageEnglish
Article number119540
JournalEnergy
Volume218
DOIs
StatePublished - 2021 Mar 1

Keywords

  • Charging station
  • Electric vehicle
  • Energy harvesting
  • Piezoelectric
  • Smart road

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