Electrically Powered Vehicles Battery Management System: Cooling for Parked Vehicles

For electrically powered vehicles Battery Management Systems are responsible for protected charging of the batteries. Different switches like MOSFETS, transistors are used to control the charging current of the batteries. While charging the batteries with 48A/11KW or 16A/45 KW the switches generate heat up to 150 W. The air environment in parked vehicles is not sufficient to cool the BMS. As a result the temperature rises up to 230°C, which in turn can change the nominal value of different components like resistors, semiconductor switches, inductances, capacitances, and the system could behave abnormally. Therefore, a reliable system must be appointed here to cool the BMS. The main goal of this paper is to propose and develop a system which can be a perfect choice for BMS cooling. There are many cooling systems which can be considered for this purpose. However, the Thermoelectric Cooler (TEC): Peltier cooler is the best option, which we have analysed from different point of views. The solution approaches included for evaluation are a physical model proposition, from that model designing a MATLAB simulator and after that various perspectives are elucidated using this simulator. Another important utilisation of the MATLAB simulator is that any TEC system independent of sizes can be simulated here and the performance of the system can also be realised visually.