Advanced battery management systems using fast electrochemical modelling

This paper presents a novel approach using a spectral orthogonal collocation method to solve the well-established ´Newman´ model for lithium-ion batteries. The resulting system of equations is much lower order and faster to solve than the equation system obtained using the more common finite difference method, but retains the accuracy of the model, with simulation results in good agreement up to high C-rates (40C) compared to the finite difference approach. This approach enables real-time solution of the model to become possible leading to efficient and accurate on-line estimation of physically meaningful states in an advanced battery management system.