Evaluation of UltraBattery™ performance in comparison with a battery-supercapacitor parallel network

This paper examines the emerging technology of batteries incorporating carbon in the negative plate to affect a parallel capacitance within the battery itself. Using a frequency domain approach in conjunction with low frequency static tests and step responses an UltraBattery™ is examined. Initial ex...

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Bibliographic Details
Published in:Journal of power sources 2013-03, Vol.226, p.191-201
Main Authors: Fairweather, A.J., Stone, D.A., Foster, M.P.
Format: Article
Language:English
Subjects:
Applied sciences
Batteries
Capacitors
Capacitors. Resistors. Filters
Carbon
Criteria
Direct energy conversion and energy accumulation
Electric batteries
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Impedance spectroscopy
Low frequencies
Networks
Parameter estimation
Performance evaluation
PRBS
Static tests
Supercapacitors
Various equipment and components
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Summary:This paper examines the emerging technology of batteries incorporating carbon in the negative plate to affect a parallel capacitance within the battery itself. Using a frequency domain approach in conjunction with low frequency static tests and step responses an UltraBattery™ is examined. Initial examinations using the Randles' model lead to development of a modified model to better represent the battery parameters. These findings then expand the work to examine a similar conventional battery connected in a parallel network with a supercapacitor bank, allowing comparisons to be made and performance criteria to be established. ► Comparative electrical performance of an ultra battery and a lead-acid battery is examined. ► A model is developed for the ultra battery which is verified experimentally. ► Comparisons are made to conventional lead-acid battery/supercapacitor parallel networks. ► Parallel network tests highlight the respective roles of the supercapacitor and battery. ► The work informs application of the ultra battery to transient charge/discharge applications.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2012.10.095