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Splitting algorithm for numerical simulation of Li-ion battery electrochemical processes

: Iliev, O.; Nikiforova, M.A.; Semenov, Y.V.; Zakharov, P.E.


Egorov, I.E.:
8th International Conference on Mathematical Modeling, ICMM 2017. Proceedings : Yakutsk, Russia, 4-8 July 2017
Melville/NY: AIP Publishing, 2017 (AIP Conference Proceedings 1907)
ISBN: 978-0-7354-1599-7
Art. 030019
International Conference on Mathematical Modeling (ICMM) <8, 2017, Yakutsk/Russia>
Fraunhofer ITWM ()

In this paper we present a splitting algorithm for a numerical simulation of Li-ion battery electrochemical processes. Liion battery consists of three domains: anode, cathode and electrolyte. Mathematical model of electrochemical processes is described on a microscopic scale, and contains nonlinear equations for concentration and potential in each domain. On the interface of electrodes and electrolyte there are the Lithium ions intercalation and deintercalation processes, which are described by Butler-Volmer nonlinear equation. To approximate in spatial coordinates we use finite element methods with discontinues Galerkin elements. To simplify numerical simulations we develop the splitting algorithm, which split the original problem into three independent subproblems. We investigate the numerical convergence of the algorithm on 2D model problem.