Dynamic energy model of a lithium-ion battery

As an electrochemical component, a lithium-ion battery is clearly a multi-disciplinary system. The choice was made to model it via Bond Graph formalism. Although this tool has been developed since the 1970s, the novelty is its application to lithium-ion batteries, which turns the modeling presented here into an original energy approach. The main objective is to develop and validate a lithium-ion battery model that could be implemented in a global system for energy monitoring. However, nearly every phenomenon occurring in the battery is taken into account for a possible ageing or thermal study. In the first part, the energy modeling approach is described. In the second part, the lithium-ion battery operation is explained. In the third part, the Bond Graph model is proposed. At last, experimental validations are presented. (C) 2010 IMACS. Published by Elsevier B.V. All rights reserved.