Résumé

Reducing Li-ion batteries' charging time to 10-15 minutes is currently one of the key challenges for the wide adoption of elec tric vehicles. However, standard fast-charging methods can shor ten battery life and present significant safety risks, including in ternal short circuits due to Li-plating. To address this issue, we designed an original electrochemical pseudo-2D model that allows online observation of the negative electrode potential, enabling the highest possible charging current to be applied without the risk of Li-plating. Using the concept of electrode homogenization and a non-uniform spatial discretization of the partial differential equa tions, a non-linear state-space representation can be derived from local electrochemical equations with very few simplifying assump tions. Experimental tests are currently being conducted to calibrate and validate the model using a 3-electrode assembly. This article presents the first results.