Small size thermoelectric power supply for battery backup

H. Abedi, F. Migliorini, R. Dondè, S. De Iuliis, F. Passaretti and C. Fanciulli

Energy, 2019, vol. 188, issue C

Abstract: The large use of portable devices imposes a new interest in the development of power backup systems with constraints in terms of compactness and safety. Such systems have to match the use as battery backups as well as a self-standing operating. Thermoelectric generators (TEGs) allow access to new ways of power supply thanks to their long lifetimes, their competitive efficiencies at low powers and their capability of providing multiple outputs. In this work, a TEG based on catalytic combustor has been proposed aiming to approach electrical output and dimension of the commonly used AA batteries. Catalytic combustion provides the possibility to profit from the high power densities of hydrocarbon in limited space and low burning temperatures meeting the needs of the TEGs as a heat engine. The system has been characterized for different fuel flow rates. The measured TEG efficiency is 3.4% with the electrical power output of 5.3 W. The system thermal behavior has been experimentally investigated according to literature models, by evaluating the effectiveness of the design and of the chosen practical solutions. The system produced reached the electrical output target, matching the characteristics proper of most of the common commercial AA batteries in a similar device volume.

Keywords: Thermoelectric generator; Thermoelectric applications; Catalytic combustor; Battery charger; Battery backup; Thermoelectric device characterization (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:188:y:2019:i:c:s0360544219317566

DOI: 10.1016/j.energy.2019.116061

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