Thermo-electric simulation of battery-modules with reduced order modelling of linear electrical components. Issue 5 (4th September 2017)

• Record Type: Journal Article
• Authors: Pichler, Franz; Koester, Niels; Thaler, Alexander
• Is Part Of: Compel. Volume 36:Issue 5(2017)
• Page Start: 1488
• Page End: 1500
• Publication Date: 2017-09-04
• Subjects: Finite-element method -- Battery simulation -- Model-order reduction; Electrical engineering -- Data Processing -- Periodicals; Electrical engineering -- Mathematics -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Data Processing -- Periodicals; Electronics -- Mathematics -- Periodicals; 621.3
• DOI: 10.1108/COMPEL-02-2017-0075
• Languages: English
• ISSNs: 0332-1649

Abstract

Abstract : Purpose: This paper aims to present a fully coupled thermo-electrical finite-element battery model with an applied model-order reduction. The model is used to analyse the thermal design of battery modules during typical drive-cycles of electric vehicles. Design/methodology/approach: A model-order reduction is applied, in which the electrical linear bus-bars are analysed in an a-priori step. For these bus-bars, special distributed basis-functions are computed, which make the solution of differential Ohm's law unnecessary during the transient simulation. Furthermore, the distributed basis-functions are used to strongly couple the non-linear battery models, which reduces the iterations needed to simulate them. Findings: Altogether, this results in a fast simulation scheme for coupled linear and non-linear electrical components and their thermal behaviour. Originality/value: The presented method delivers an innovative approach, on how to systematically minimize the computational effort in a system of linear and non-linear electrical components, while keeping the full three-dimensional information of the original problem.