A compact human-powered energy harvesting system

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Rao, Yuan^1 ; McEachern, Kelly M.^1 ; Arnold, David P.^1

Interdisciplinary Microsystems Group, Department Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611, United States^1

关键词: Electrical energy;    Electronic device;    Energy harvesting systems;    External power supplies;    Human activities;    Long term vision;    Polymer battery;    State of charge;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012011/pdf
DOI  :  10.1088/1742-6596/476/1/012011

来源: IOP

【 摘 要 】

This paper presents a fully functional, self-sufficient body-worn energy harvesting system for passively capturing energy from human motion, with the long-term vision of supplying power to portable, wearable, or even implanted electronic devices. The system requires no external power supplies and can bootstrap from zero-state-of-charge to generate electrical energy from walking, jogging and cycling; convert the induced ac voltage to a dc voltage; and then boost and regulate the dc voltage to charge a Li-ion-polymer battery. Tested under normal human activities (walking, jogging, cycling) when worn on different parts of the body, the 70 cm3system is shown to charge a 3.7 V rechargeable battery at charge rates ranging from 33 μW to 234 μW.