Thermal modelling of new Li-ion cell design modifications

Medientyp: E-Artikel

Titel: Thermal modelling of new Li-ion cell design modifications

Beteiligte: Sievers, Martin [Verfasser:in]; Sievers, Uwe [Verfasser:in]; Mao, Samuel S. [Verfasser:in]

Körperschaft: Technische Universität Hamburg-Harburg ; Technische Universität Hamburg-Harburg, Institut für Thermofluiddynamik

Erschienen: Dezember 2010

Sprache: Englisch

DOI: 10.1007%2Fs10010-010-0127-y; 10.15480/882.1864

Identifikator:

Schlagwörter: heat transfer ; free convection ; force convection ; negative electrode ; cell design

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Beschreibung: The effects of material and design modifications on the temperature distribution of Li-ion cells are simulated numerically. A two-dimensional anisotropic cylindrical coordinate model with linear triangular finite elements is used to simulate the steady-state temperature distribution within the cell. The cell's material and geometry are changed. New cell materials are investigated for thermal performance: a negative electrode of variously-oriented carbon nanotubes, as well as separators made of Separion, of Al 2O3 containing Cr particles or of BeO containing Be and Si particles. The cell's diameter and length are varied. A new cell design with an internal cooling tube is proposed. The effect of cooling tube diameter upon cell temperature and the energy efficiency of cooling are investigated. This simple design change significantly improves the temperature distribution at marginal cost.

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