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Energies 2014, 7(12), 8264-8278; doi:10.3390/en7128264

Modeling of the Electrical and Thermal Behaviors of an Ultracapacitor

1
Department of Energy Systems Research, Ajou University, Suwon 443-749, Korea
2
Manufacturing Technology Center, LS Mtron Ltd., Gunpo 435-831, Korea
3
Ultracapacitor (UC) Team/R&D, LS Mtron Ltd., Anyang 431-831, Korea
*
Author to whom correspondence should be addressed.
Received: 21 August 2014 / Revised: 26 November 2014 / Accepted: 27 November 2014 / Published: 10 December 2014
(This article belongs to the Special Issue Electrochemical Energy Storage—Battery and Capacitor)
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Abstract

This paper reports a modeling methodology to predict the electrical and thermal behaviors of a 2.7 V/650 F ultracapacitor (UC) cell from LS Mtron Ltd. (Anyang, Korea). The UC cell is subject to the charge/discharge cycling with constant-current between 1.35 V and 2.7 V. The charge/discharge current values examined are 50, 100, 150, and 200 A. A three resistor-capacitor (RC) parallel branch model is employed to calculate the electrical behavior of the UC. The modeling results for the variations of the UC cell voltage as a function of time for various charge/discharge currents are in good agreement with the experimental measurements. A three-dimensional thermal model is presented to predict the thermal behavior of the UC. Both of the irreversible and reversible heat generations inside the UC cell are considered. The validation of the three-dimensional thermal model is provided through the comparison of the modeling results with the experimental infrared (IR) image at various charge/discharge currents. A zero-dimensional thermal model is proposed to reduce the significant computational burden required for the three-dimensional thermal model. The zero-dimensional thermal model appears to generate the numerical results accurate enough to resolve the thermal management issues related to the UC for automotive applications without relying on significant computing resources. View Full-Text
Keywords: ultracapacitor (UC); model; electrical behavior; thermal behavior ultracapacitor (UC); model; electrical behavior; thermal behavior
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lee, J.; Yi, J.; Kim, D.; Shin, C.B.; Min, K.-S.; Choi, J.; Lee, H.-Y. Modeling of the Electrical and Thermal Behaviors of an Ultracapacitor. Energies 2014, 7, 8264-8278.

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