Semnan University International Journal of Nonlinear Analysis and Applications 2008-6822 12 Special Issue 2021 12 01 Numerical analysis of ‘On-Off’ control thresholds and coolant flow rate for better performance of a Lithium-Ion battery thermal management system 1775 1791 5884 10.22075/ijnaa.2021.5884 EN R. Suresh Kumar Department of Automobile Engineering, PSG College of Technology, Coimbatore, India P.K. Rajesh Department of Automobile Engineering, PSG College of Technology, Coimbatore, India S. Neelakrishnan Department of Automobile Engineering, PSG College of Technology, Coimbatore, India Journal Article 2021 07 29 Electric vehicles will become an inevitable part of future transportation, because of the increasing concerns of global warming and climate change effects, caused by gasoline and diesel vehicles. Lithium-ion cells are the primary candidates for energy storage in electric vehicles. Lithium-ion cells are sensitive to operating temperatures. Operating them beyond the optimum temperatures, reduces their lifetime and can lead to thermal runaway, at extreme conditions. Hence, a thermal management system is required. In this work, a simple ‘On-Off’ control is used and the upper and lower thresholds are optimized, to reduce the energy consumption and the temperature difference between the cells. 3 coolant flow rates are selected and are analyzed for each upper and lower threshold. A MATLAB Simulink model and spreadsheet are used for analysis. The models are validated by experiments. It is found that a control strategy of $'32^{\circ}C$ to $35^{\circ}C'$, with a coolant flow rate of 0.67 kg $s^{-1}$, among the selected strategies, is better in reducing energy consumption and temperature difference. Running the cells at relatively higher temperatures, within the optimum range, helps in reducing energy consumption and temperature difference. https://ijnaa.semnan.ac.ir/article_5884_7ed2d3454c5eea71148b11d0c25104ff.pdf