Comparative modelling of traction batteries in view of electric vehicle applications

The traction battery remains the key element in determining range and performance of the electrically propelled vehicle, particularly the battery-electric vehicle. To assess drive train behaviour in various operating conditions and to enable comparison of various battery types, knowledge of battery parameters and models is essential. The paper gives a comparative description of some of the most commonly used battery technologies encompassing various lead-acid implementations . A number of battery modules of typical capacity have been submitted to standardized test procedures (IEC standards), as well as to determining SOCdependent battery models. On one hand these measurements will allow to precisely model these batteries through simple but accurate numerical functions in order to improve simulations.. On the other hand they will enable comparing battery characteristics with the aim to obtain the most appropriate battery for various electric and hybrid drive applications. The results can be integrated into a simulation approach considering the vehicle as a whole.