An Application of the Linear and Time-Invariant Method for the System-Level Thermal Simulation of an EV Battery

2015-01-1197

04/14/2015

Event
SAE 2015 World Congress & Exhibition
Authors Abstract
Content
This paper presents a system-level thermal model of a fluid-cooled Li-Ion battery module. The model is a reduced order model (ROM) identified by results from finite element analysis (FEA)/computational fluid dynamic (CFD) coupling simulation using the linear and time-invariant (LTI) method. The ROM consists of two LTI sub-systems: one of which describes the battery temperature response to a transient battery current, and the other of which takes into account of the battery temperature variation due to a heat flux induced by a varied inlet temperature of the battery cooling circuit. The thermal LTI model can be coupled to an electrical model to build a complete system-level battery ROM. Test examples show that the ROM is able to provide as accurate results as those from FEA/CFD coupling simulations.
Meta TagsDetails
DOI
https://doi.org/10.4271/2015-01-1197
Pages
8
Citation
Chen, C., Diwoky, F., Pavlovic, Z., and Wurzenberger, J., "An Application of the Linear and Time-Invariant Method for the System-Level Thermal Simulation of an EV Battery," SAE Technical Paper 2015-01-1197, 2015, https://doi.org/10.4271/2015-01-1197.
Additional Details
Publisher
Published
Apr 14, 2015
Product Code
2015-01-1197
Content Type
Technical Paper
Language
English