The parallel combination of a VRLA cell and supercapacitor for use as a hybrid vehicle peak power buffer

Paul Bentley, David A. Stone, Nigel Schofield

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

The performance of a standard, production VRLA cell has been improved by paralleling with combinations of supercapacitors. The supercapacitors act to lower the source impedance of the combination providing a much-enhanced performance. Transient voltage swings are suppressed and the rms voltage is supported. Low-temperature performance may also be improved due to the characteristics of the supercapacitor. These enhancements are described for various combinations of cell and supercapacitor under realistic hybrid vehicle power demands. A simple model is proposed and used to demonstrate supercapacitor size requirements for optimal current in the parallel cell.

Original languageEnglish
Pages (from-to)288-294
Number of pages7
JournalJournal of Power Sources
Volume147
Issue number1-2
Early online date2 Mar 2005
DOIs
Publication statusPublished - 9 Sep 2005
Externally publishedYes

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