Modeling transient processes in lead-acid batteries in the time domain. (June 2020)

• Record Type: Journal Article
• Authors: Huck, Moritz; Sauer, Dirk-Uwe
• Is Part Of: Journal of energy storage. Volume 29(2020)
• Publication Date: 2020-06
• Subjects: Multi-physics -- Transient behavior -- Modeling -- Lead-acid battery; Energy storage -- Periodicals; Energy storage -- Research -- Periodicals; 621.3126
• DOI: 10.1016/j.est.2020.101430
• Languages: English
• ISSNs: 2352-152X

Abstract

Highlights: The fundamental conservation equations for battery modeling are known for a long time. This work presents the necessary equations to model a lead-acid battery on a macroscopic scale. Microscopic processes like crystal growth are handled in a volume average approach. It shows that the behavior of lead-acid batteries can be reproduced with a FEM model. Abstract: Modeling the performance of electrochemical storage systems divides mostly into two approaches; (extended) impedance bases models, which can model the fast dynamics very good but fail for processes with long time constants, and physical-chemical models which usually neglects the fast dynamics and focus on the slower time constants. This works aims to introduce the faster dynamics into a physical-chemical model for lead-acid batteries, which can help to understand the processes inside the battery during e.g. a primary control events. This parts covers the basic model on which future works will build on.