Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 54 9 2022 11 22 Numerical Modeling of Li-Ion Battery Temperature Control System at Low Initial Temperature Numerical Modeling of Li-Ion Battery Temperature Control System at Low Initial Temperature 2085 2102 4951 10.22060/mej.2022.20343.7212 FA Pedram Shamsizadeh Department of Mechanical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran Ebrahim Afshari Journal Article 2021 07 29 Li-ion battery temperature affects its performance, significantly, and keeping its temperature in proper operational temperature is obligatory; so, this guarantees the performance, safety, and life span of the battery. In this study, the performance of the planar Li-ion battery temperature management system with 6 cells in cold weather (initial temperature -20^oC) is investigated. The maximum temperature difference and the average temperature of the battery cells are the two main performance criteria of the temperature management system. Effects of mass flow rate, number of heating plates, and flow arrangement consisting of parallel, counter, and zig-zag flow arrangements on the performance criterion and also on the warm-up time are studied. Results show that by increasing the fluid mass flow rate batteries reach the proper temperature (20^oC) faster and the temperature difference decreases. At a constant mass rate, the addition of heating plates decreases the warm-up time. The zig-zag flow arrangement has better performance in terms of temperature difference criteria up to 8 times and reaches 2.1 degrees at the maximum value, but parallel-flow warms up the batteries faster than the other flow arrangements. Li-ion battery temperature affects its performance, significantly, and keeping its temperature in proper operational temperature is obligatory; so, this guarantees the performance, safety, and life span of the battery. In this study, the performance of the planar Li-ion battery temperature management system with 6 cells in cold weather (initial temperature -20^oC) is investigated. The maximum temperature difference and the average temperature of the battery cells are the two main performance criteria of the temperature management system. Effects of mass flow rate, number of heating plates, and flow arrangement consisting of parallel, counter, and zig-zag flow arrangements on the performance criterion and also on the warm-up time are studied. Results show that by increasing the fluid mass flow rate batteries reach the proper temperature (20^oC) faster and the temperature difference decreases. At a constant mass rate, the addition of heating plates decreases the warm-up time. The zig-zag flow arrangement has better performance in terms of temperature difference criteria up to 8 times and reaches 2.1 degrees at the maximum value, but parallel-flow warms up the batteries faster than the other flow arrangements. https://mej.aut.ac.ir/article_4951_8cbe9ce23f42628c98f80fa0fac8b19a.pdf