Design and testing of road piezoelectric power generation device based on traffic environment applicability

Chaohui Wang, Hongyun Cao, Shuai Wang and Zhiwei Gao

Applied Energy, 2021, vol. 299, issue C, No S0306261921007522

Abstract: This paper presents a design scheme for the applicability of piezoelectric power generation device in road traffic environment, which overcomes the problem of limited application due to the existing technology inapplicability to the complicated and changeable road traffic environment. Then, the traffic environment applicability of the device is evaluated with respect to the traffic load, temperature and water. And the electrical output effects are tested under different loads. The results indicate that under the load of 2.86 times the standard traffic load, the overall deformation of the device is only 0.941 mm, and the device exhibits good compression stability. The maximum internal temperature change rate of the device under different ambient temperatures is 2.4 °C/h, which is far lower than the pavement. Furthermore, the weight of the device increases by only 2.1 g after 24 h of immersion in water, with no moisture inside the device. Therefore, the device has excellent applicability in the traffic environment. Finally, the voltage and power of the device under the 0.9 MPa – 5 Hz can reach 96 V and 43.264 mW, and the power density reaches 0.064 mW/cm3, which is much higher than existing devices. This work will promote the application of piezoelectric energy harvesting technology in road engineering.

Keywords: Energy harvesting; Piezoelectric device; Environment applicability; Energy output; Road engineering (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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DOI: 10.1016/j.apenergy.2021.117344

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