Hysteresis effect influence on electrochemical battery modeling

Abstract This paper studies the influence on the voltage estimation accuracy of a novel hysteresis effect model. The model is applied to six different battery technologies: Lead–acid AGM, Lead–acid gel, Nickel–cadmium, Nickel–metal hydride, Lithium-ion, Lithium-ion polymer. The proposed hysteresis electrical model estimates the variation of the parameters in a classical model when considering hysteresis effects. A general model is proposed and the characterization process is optimized so that it can be applied to all studied cells. The model is composed of three circuits: voltage–current circuit, Ah counting circuit and hysteresis electrical model circuit. All the parameters for all six technologies are calculated and compared. The model evaluation is carried out through 18 case studies. The results are compared in terms of increment of voltage estimation accuracy when considering hysteresis and influence of hysteresis on a certain technology. The model average voltage estimation error of all technologies is 0.48%. When hysteresis effect is included the average error reduces in 0.71%.