Investigation on Battery Thermal Management System Design parameters using MATLAB Simulink

Battery thermal management systems (BTMS) are crucial for preserving the efficiency, durability, and safety of batteries through the regulation of their temperature. They mitigate the risk of overheating and performance degradation caused by extreme temperatures, particularly in electric vehicles, hence improving dependability and optimising energy utilisation. Efficient Battery Thermal Management Systems (BTMS) guarantee that batteries function under ideal thermal conditions, thereby increasing their longevity and enhancing their performance. This study focuses on MATLAB Simulink model of battery thermal management system using a cooling unit. The designed model is a virtual prototype where a coolant flow triggers by rise in the temperature and heating element will be activated when battery temperature falls. A ۲۰-cell battery pack is designed, and ۴ battery packs are connected in series. Cooling tubes, pump, tank, battery pack and cooling unit are the main components in the designed prototype. The effect of different coolants is used to evaluate heat transfer in BTMS. The FTP-۷۵ (federal test procedure) is employed as a testing drive cycle for light-duty vehicles and is consequently utilised as a drive source in simulations. The speed of variation can be observed based on the fluctuation in the current demand from the battery pack. This research utilizes MATLAB Simulink to run detailed simulations and assesses the effects of different ambient temperatures, coolant volume fractions, and charge/discharge rates on the maximum temperature, pump power, and refrigerant power of an electric vehicle (EV) battery pack. The findings indicate that increased ambient temperatures and larger concentrations of ethylene glycol result in higher initial peaks, yet the general patterns of fast increase and subsequent stability remain similar. Increased discharge rates need more frequent and diverse cooling, whereas increased charge rates lead to greater peak temperatures and sustained cooling requirements. In addition, the process of charging requires a consistent cooling system, while discharging requires a cooling system that operates intermittently.

کلیدواژه ها:

Battery Thermal Management System (BTMS) ، MATLAB Simulink ، Electric Vehicle (EV) ، Battery Pack