Title :
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
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;
Conference_Titel :
Decision and Control, 2002, Proceedings of the 41st IEEE Conference on
Print_ISBN :
0-7803-7516-5
DOI :
10.1109/CDC.2002.1184773
