Title :
Battery impedance and its relationship to battery characteristics
Author :
Tenno, A. ; Tenno, R. ; Suntio, T.
Author_Institution :
Helsinki Univ. of Technol., Finland
Abstract :
Impedance of valve-regulated lead-acid batteries is analysed in this paper, using a model-based method. Both double-layer impedance and electrochemical reaction impedance are evaluated, using current, voltage and temperature data measured in experiments. It is shown that the electrochemical impedance is a sensitive indicator that can be utilised to detect small inequalities between batteries while the double-layer impedance is less sensitive.
Keywords :
electric current measurement; electric impedance; lead acid batteries; temperature measurement; voltage measurement; Pb; VRLA batteries; battery impedance; current measurement; double-layer impedance; electrochemical reaction impedance; model-based method; temperature measurement; valve-regulated lead-acid batteries; voltage measurement; Battery charge measurement; Capacitance; Electrical resistance measurement; Electrodes; Impedance measurement; Pulse measurements; Surface resistance; Temperature measurement; Time factors; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 2002. INTELEC. 24th Annual International
Print_ISBN :
0-7803-7512-2
DOI :
10.1109/INTLEC.2002.1048653
