Title :
Estimating the state of charge of a battery
Author :
Chiasson, John ; Vairamohan, Baskar
Author_Institution :
Dept. of Electr. & Comput. Eng., Tennessee Univ., Knoxville, TN, USA
Abstract :
This work considers the state of charge (SOC) estimation problem for electrochemical batteries. Using an electric circuit model of the battery given in the literature, it is shown how the open circuit voltage (which is directly related to the SOC) can be estimated based on the terminal voltage and current measurements provided there is sufficient variation in the battery current.
Keywords :
electric charge; lead acid batteries; observability; secondary cells; time-varying systems; Pb; SOC estimation; current measurement; electric circuit model; electrochemical batteries; lead-acid batteries; linear time varying systems; observability Gramian; open circuit voltage; state of charge estimation; voltage measurement; Battery charge measurement; Capacitance; Circuits; Current measurement; Frequency; Observability; State estimation; Temperature dependence; Temperature sensors; Voltage;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1243757
