A Novel Root-Finding Algorithm to Solve the Pseudo-2D Model of a Lithium-ion Battery

Lithium-ion Batteries (LiBs) have become the main energy storage chemistry for applications like electric vehicles (EVs). High-fidelity physics model of LiBs for online operation of a battery management system (BMS) is yet to be achieved and is ongoing research. In this paper, a novel algorithm is proposed to implement a pseudo-two-dimensional (P2D) model of a LiB using the Finite Volume and Euler Methods. Our proposed approach uses a novel root-finding algorithm that solves the P2D model with the same degree of accuracy as commercially available solvers but with much faster solving speeds, making our approach suitable for real-time applications.