5th International Anatolian Energy Symposium, Trabzon, Turkey, 24 - 25 March 2021, pp.41-49
There is a growing interest in high-efficiency, long-lasting, and safe energy storage systems used in various
applications such as transportation, aviation, and grid energy storage. Batteries, which are electrochemical energy
storage devices, play a vital role in meeting this interest. The operation temperature directly affects the efficiency,
lifetime, and safety of the battery pack. Thus, heat removal from the battery surfaces is of great importance to
eliminate the harmful effects of over temperature and to keep the battery pack in the desired temperature range
during the operation. In this study, the cooling problem of a lithium-ion battery pack was numerically investigated
using the air as the coolant in a rectangular duct. Two different staggered arrangements and the in-line arrangement
of the battery pack were applied separately. Heat removal from the cell surfaces was compared for the prescribed
arrangements under the same hydrodynamic condition. The finite control volume-based numerical solution was
used to solve the forced convection heat transfer for the cross-flow through the battery pack in a three-dimensional
domain. Solutions of the governing and the auxiliary equations were carried out by using the ANSYS/Fluent
software. In ANSYS/Fluent, a constant heat generation of 52000 𝑊/𝑚3 was assigned for each cell in the pack.
The results showed that the battery packs using two different staggered arrangements had further improvement in
heat transfer up to 12.07% compared to the in-line arrangement.