Title :
Battery voltage prediction for portable systems
Author :
Rakhmatov, Daler N.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
Optimizing energy consumption of a portable system directly affects the discharge current drawn from the battery. Since battery life ends when the battery voltage drops below a certain cutoff value, modeling the voltage-current relationship is important to system designers evaluating the impact of various design alternatives on the battery life. This paper presents a model that can accurately predict the battery voltage given current over time. Modeled phenomena include battery capacity loss at high discharge rates, charge recovery, and capacity fade with time.
Keywords :
battery management systems; circuit optimisation; low-power electronics; power consumption; battery capacity loss; battery voltage prediction; capacity fade with time; charge recovery; discharge current; discharge rates; energy consumption optimization; portable systems; voltage-current relationship; Analytical models; Batteries; Chemistry; Circuits; Energy consumption; Energy management; Predictive models; Robustness; Temperature; Voltage;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465532
