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Advanced thermal management for temperature homogenization in high-power lithium-ion battery systems based on prismatic cells

Title data

Gepp, Markus ; Filimon, R. ; Koffel, S. ; Lorentz, Vincent ; März, M.:
Advanced thermal management for temperature homogenization in high-power lithium-ion battery systems based on prismatic cells.
Event: 2015 IEEE 24th International Symposium on Industrial Electronics (ISIE) , Jun. 3–5, 2015 , Buzios, Brazil.
(Conference item: Conference , Speech with paper )

Official URL: Volltext

Project information

Project title:
Project's official title
Project's id
eDAS: Holistic Energy Management for third and fourth generation of EVs: eDAS = efficiency powered by smart Design meaningful Architecture connected Systems

Project financing: 7. Forschungsrahmenprogramm für Forschung, technologische Entwicklung und Demonstration der Europäischen Union
The research leading to these results has received funding from the European Union's Seventh Framework Program for research, technological development and demonstration under grant agreement no 608770 (“eDAS”).

Abstract in another language

In order to extend the lifetime of lithium-ion batteries, an advanced thermal management concept is investigated. In battery modules, different cell temperatures lead to higher efforts in cell balancing and reduce the system's lifetime. Especially when battery systems with phase change material operate outside the phase transition range high temperature gradients can occur that result in different ageing speeds of the cells. The effect of temperature dependent ageing of the battery cells is further investigated. A battery module concept is developed with focus on temperature homogenization by optimization of the module design and material characteristics. The module design combines several approaches including optimized interface pads, thermal storage materials and anisotropic multilayer graphite sheets. Numerical simulations with material and geometrical models are used for the evaluation of the concept with reference models. In addition, a battery cell model is set up, which describes the reversible and irreversible heat generation rate. Using model-order-reduction, the simulations are accelerated by reduction of the calculation time. In order to optimize the material parameters, the simulations are analyzed with design exploration techniques. As a result, the overall temperature differences in the module are minimized and the temperature distribution is homogenized with new developed interface pads. In combination with high thermally conductive synthetic graphite sheets the pads also compensate the insulating behavior of thermal storage material, which is used for temperature peak reduction and to smooth temperature changes.

Further data

Item Type: Conference item (Speech with paper)
Refereed: Yes
Keywords: lithium-ion batteries; lifetime increase; passive thermal management; temperature homogenization; heat generation; FEM simulation; design optimization; model-order-reduction
Institutions of the University: Research Institutions > Research Centres > Bayerisches Zentrum für Batterietechnik - BayBatt
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 07 Jun 2022 08:55
Last Modified: 03 Aug 2022 07:27