State of charge estimator for NiMH batteries

Author

Barbarisi, Osvaldo ; Canaletti, Roberto ; Glielmo, Luigi ; Gosso, Michele ; Vasca, Francesco

Author_Institution

Dept. of Eng., Sannio Univ., Benevento, Italy

Volume

2

fYear

2002

fDate

10-13 Dec. 2002

Firstpage

1739

Abstract

A state of charge estimator for Nickel-Metal Hydride batteries, suitable for hybrid vehicles automotive applications, is proposed. The estimator is based on a statespace dynamic model of the battery which is obtained by modeling the kinetic of reactions and the diffusion phenomena. State of charge is estimated by computing the dynamic behavior of the Ni(OH)₂ concentrations in the active nickel-hydroxide film and using measurements of current and voltage. The estimator is tested off-line on experimental data and performs good results.

Keywords

electrochemical electrodes; electrochemistry; hybrid electric vehicles; nickel; secondary cells; Ni-MH secondary batteries; current measurements; dynamic behavior; hybrid vehicles automotive applications; reaction kinetics; state of charge estimator; state-space dynamic model; voltage measurements; Automotive applications; Battery charge measurement; Battery powered vehicles; Charge measurement; Current measurement; Kinetic theory; State estimation; Testing; Vehicle dynamics; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2002, Proceedings of the 41st IEEE Conference on

ISSN

0191-2216

Print_ISBN

0-7803-7516-5

Type

conf

DOI

10.1109/CDC.2002.1184773

Filename

1184773