A Model for a Lithium-Polymer Battery Based on a Lumped Parameter Representation of the Charge Diffusion

This paper proposes a model of the diffusion and electrical dynamics of lithium-polymer batteries through a lumped parameter approach. Discharge experiments were performed on a set of three battery cells using a programmable DC load. The resulting data sets were used to obtain several model parameters using different optimization approaches. A comparison of the performance of such optimization approaches to estimate the model parameters from experimental tests was also conducted. The resulting models had an overall good performance, proving that the chosen modeling approach applies to lithium-polymer batteries.