Dynamic Model of Lithium Polymer Battery - Load Resistor Method for Electric Parameters Identification

GANDOLFO, DANIEL; BRANDÃO, ALEXANDRE; PATIÑO, HECTOR DANIEL; MOLINA, MARCELO GUSTAVO

JOURNAL OF THE ENERGY INSTITUTE

ELSEVIER

Lugar: Londres; Año: 2015 vol. 88 p. 470 - 479

1743-9671

Maximum battery runtime and its transients behaviors are crucial in many applications. With accurate battery models in hand, circuit designers can evaluate the performance of its developments considering the influence of a finite source of energy which has a particular dynamics; as well as the energy storage systems can be optimized. First, this work describes a complete dynamic model of a lithium polymer battery. In the sequel a simple and novel procedure is used to obtain the electric parameters of adopted model with the advantage of using only one resistor to represent the battery load and a pc-connected multimeter. The methodology used to identify the parameters of the battery model is simple, clearly explained and can be applied to various types of batteries. Simulation and experimental results are presented and discussed, demonstrating the good performance of the proposed identification methodology.