Characterisation of the Thermal Response of a Li-ion Battery Module to Transient Loads – A Numerical Study

Saeed, A. , Karimi, N. and Paul, M. (2022) Characterisation of the Thermal Response of a Li-ion Battery Module to Transient Loads – A Numerical Study. 16th International Conference on Heat Transfer, Fluid Mechanics, and Thermodynamics (HEFAT-ATE 2022), Amsterdam, Netherlands, 08-10 Aug 2022.

Abstract

Li-ion batteries are known to be highly sensitive to operational temperatures and exceeding a narrow range of temperature can damage them permanently. So far, most research efforts on battery thermal management considered steady conditions. However, in practice, battery heat generation is proportional to the load, which is highly time dependent. Hence, batteries often experience a transient change of temperature, turning battery cooling into a time-dependent problem. An essential step in tackling such problem is characterisation of the thermal response of battery to different transient loads. To achieve this, the electric loads, acting on the battery, are inferred from the standard driving cycles and their required mechanical power. Also, a numerical model for cooling of a battery module is developed using OpenFoam. Thermal response of the system is then simulated for different driving scenarios. Particular attention is paid to the steeply increasing loads, as they can be potentially more harmful to batteries. The results show that during transient loading, the instantaneous temperature of some battery cells in the module could significantly exceed the safe limits. The effects of type and velocity of the coolant and the location of a cell in the module, upon the temperature traces of the cell are discussed.

• Item Type: Conference or Workshop Item
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Paul, Professor Manosh and Karimi, Dr Nader and Saeed, Mr Ali
• Authors: Saeed, A., Karimi, N., and Paul, M.
• College/School: College of Science and Engineering > School of Engineering
• Copyright Holders: Copyright © The Author(s) 2022
• Publisher Policy: Reproduced with permission from the publisher

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