Abstract
To achieve high safety and efficient battery system, predicting internal transport phenomena of commercial lithium ion batteries under HEVs or EVs driving conditions become more important because these phenomena can uncover battery limitations. In this study, a pseudo 2D model has been developed by finite volume method to be used for analyzing each over-voltage under EV driving condition, JC08 test cycle. As a result, the main reason of energy loss reduction due to voltage fluctuation is lithium ion (salt) transfer in an electrolyte under transient or pulse conditions compared with those under constant current conditions.
