Exploring the Efficacy of Nano fluid (Al2O3) Based Battery Thermal Management System using CFD

Abstract

The major issues in battery pack are a lack of temperature uniformity and higher Ohmic and heat generation rates. Thus, a well-designed cooling system is essential to achieving optimum battery performance at any charging or discharging rate. This study further develops two phase flow Al2O3 based Nano fluid cooled by air to produce excellent performance from a Multi phase flow battery pack. Simulations were carried out at +1 C-Rate with a 14.6 Ah battery cell in fluent using the available multi scale multi domain (MSMD) solver model. From the analysis results, it can be observed that almost 7 to 10 °K of temperature differences are experienced for Al2O3 Nano based cooling than for Air cooling. Similarly, maximum temperatures are only seen for the tab and bus bar zones for all cases. Moreover, the simulation results have shown that the Ohimic heat is lower in Al2O3 nano cooling as compared to air cooling method.