Flexible Piezoelectric Energy Harvester with Extremely High Power Generation Capability by Sandwich Structure Design Strategy

2020 ◽  
Vol 12 (8) ◽  
pp. 9766-9774 ◽  
Author(s):  
Jing Fu ◽  
Yudong Hou ◽  
Mupeng Zheng ◽  
Mankang Zhu
2014 ◽  
Vol 672-674 ◽  
pp. 402-406
Author(s):  
Bing Jiang ◽  
Shuai Yuan ◽  
Xiao Hui Xu ◽  
Mao Sheng Ding ◽  
Ye Yuan ◽  
...  

In recent years, piezoelectric energy harvester which can replace the traditional battery supply has become a hot topic in global research field of microelectronic devices. Characteristics of a trapezoidal-loop piezoelectric energy harvester (TLPEH) were analyzed through finite-element analysis. The output voltage density is 4.251V/cm2 when 0.1N force is applied to the free end of ten-arm energy harvester. Comparisons of the resonant frequencies and output voltages were made. The first order resonant frequency could reach 15Hz by increasing the number of arms. Meanwhile, the output voltage is improved greatly when excited at first-order resonant frequencies. The trapezoidal-loop structure of TLPEH could enhance frequency response, which means scavenging energy more efficiently in vibration environment. The TLPEH mentioned here might be useful for the future structure design of piezoelectric energy harvester with low resonance frequency.


2021 ◽  
Vol 21 (9) ◽  
pp. 11140-11154
Author(s):  
Po-Chen Yeh ◽  
Tzu-Hao Chien ◽  
Min-Siang Hung ◽  
Chuan-Ping Chen ◽  
Tien-Kan Chung

2017 ◽  
Vol 265 ◽  
pp. 62-69 ◽  
Author(s):  
Zhou Zeng ◽  
Linlin Gai ◽  
Arnaud Petitpas ◽  
Yue Li ◽  
Haosu Luo ◽  
...  

Actuators ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 8
Author(s):  
Tao Li ◽  
Pooi Lee

A piezoelectric energy harvester was developed in this paper. It is actuated by the vibration leakage from the nodal position of a high-power ultrasonic cutting transducer. The harvester was excited at a low displacement amplitude (0.73 µmpp). However, its operation frequency is quite high and reaches the ultrasonic range (24.4 kHz). Compared with another low frequency harvester (66 Hz), both theoretical and experimental results proved that the advantages of this high frequency harvester include (i) high current generation capability (up to 20 mApp compared to 1.3 mApp of the 66 Hz transducer) and (ii) low impedance matching resistance (500 Ω in contrast to 50 kΩ of the 66 Hz transducer). This energy harvester can be applied either in sensing, or vibration controlling, or simply energy harvesting in a high-power ultrasonic system.


2018 ◽  
Vol 142-143 ◽  
pp. 224-234 ◽  
Author(s):  
Usharani Ramalingam ◽  
Uma Gandhi ◽  
Umapathy Mangalanathan ◽  
Seung-Bok Choi

2015 ◽  
Vol 30 (12) ◽  
pp. 6763-6774 ◽  
Author(s):  
Kanishka Aman Singh ◽  
Ratnesh Kumar ◽  
Robert J. Weber

Author(s):  
Shan Gao ◽  
Hongrui Ao ◽  
Hongyuan Jiang

Abstract Piezoelectric vibration energy harvesting technology has attracted significant attention for its applications in integrated circuits, microelectronic devices and wireless sensors due to high power density, easy integration, simple configuration and other outstanding features. Among piezoelectric vibration energy harvesting structures, cantilevered beam is one of the simplest and most commonly used structures. In this work, a vertically staggered rectangle-through-holes (VS-RTH) cantilevered model of mesoscale piezoelectric energy harvester is proposed, which focuses on the multi-directional vibration collection and low resonant frequency. To verify the output performances of the device, this paper employs basic materials and fabrication methods with mathematical modeling. The simulations are conducted through finite element methods to discuss the properties of VS-RTH energy harvester on resonant frequency and output characteristics. Besides, an energy storage circuit with high power collection rate is adopted as collection system. This harvester is beneficial to the further application of devices working with continuous vibrations and low power requirements.


Nanoscale ◽  
2020 ◽  
Vol 12 (24) ◽  
pp. 13001-13009
Author(s):  
Yijin Hao ◽  
Yudong Hou ◽  
Jing Fu ◽  
Xiaole Yu ◽  
Xin Gao ◽  
...  

The freeze-casted 2-2 type piezocomposite has an ultrahigh transduction coefficient of 58 213 × 10−15 m2 N−1, which is significantly better than those of previously reported composite materials.


2017 ◽  
Vol 28 (17) ◽  
pp. 2437-2449 ◽  
Author(s):  
Sumin Seong ◽  
Chao Hu ◽  
Soobum Lee

In recent years, vibration energy harvesters have been widely studied to build self-powered wireless sensor networks for monitoring modern engineered systems. Although there has been significant research effort on different energy harvester configurations, the power output of a vibration energy harvester is known to be sensitive to various sources of uncertainties such as material properties, geometric tolerances, and operating conditions. This article proposes a reliability-based design optimization method to find an optimum design of energy harvester that satisfies the target reliability on power generation. This optimum design of vibration energy harvester demonstrates reliable power generation capability in the presence of the various sources of uncertainties.


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