Vehicle lead-acid battery state-of-charge meter

Author

Scott, Jonathan ; Pennington, Kyle ; Schwarz, Sergej ; Rowe, Philip

Author_Institution

Dept. of Eng., Univ. of Waikato, Hamilton, New Zealand

fYear

2011

fDate

7-10 Nov. 2011

Firstpage

1660

Lastpage

1664

Abstract

We describe a state-of-charge, or “residual-capacity” meter for lead-acid batteries that intelligently synthesizes coulometric and terminal-voltage methods in a new algorithm to provide reliable, continuous readout of remaining capacity. Novel electronic circuit design eliminates the need to install a shunt in the vehicle. The meter learns the characteristics of a battery to which it is attached, removing the need for setup, customisation, programming or calibration at time of installation or battery replacement. The meter can thus be installed by unqualified personnel. Initial measurements suggest the design to be robust and accurate.

Keywords

battery powered vehicles; calibration; meters; secondary cells; battery replacement; calibration; coulometric methods; electric vehicles; electronic circuit design; residual-capacity meter; state-of-charge meter; terminal-voltage methods; vehicle lead-acid battery; Batteries; Battery charge measurement; Current measurement; Estimation; Lead; Vehicles; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Melbourne, VIC

ISSN

1553-572X

Print_ISBN

978-1-61284-969-0

Type

conf

DOI

10.1109/IECON.2011.6119556

Filename

6119556