Cooling System Design and Control of Battery Management System of Electric Vehicles

3rd International Conference on Applied Engineering and Natural Sciences, Konya, Türkiye, 20 - 23 Temmuz 2022, cilt.1, sa.1, ss.1024-1025

The place of electric vehicle technology in the developing automotive industry is increasing

daily. Battery management systems (BMS) and their operation are essential among the working systems of

these vehicles. Within the scope of this study, a unique battery pack was designed, using local resources,

by using 18650 Li-ion charged and long-lasting batteries. This designed battery pack consists of 21

batteries. When the necessary connections of the battery pack are made, a battery pack with a voltage of

11.1 V and a capacity of 10500 mAh has been produced. The design is aimed to prevent problems such as

overheating and ignition by covering the battery pack with non-combustible material. For this designed

battery pack to be discharged and charged healthily, the battery management system has been designed as

controllable uniquely. By automatically detecting the number of cells in the battery pack and using a special

balancing algorithm, the temperature of the battery pack is controlled using a temperature sensor and an

externally attachable temperature sensor input for balancing continuously during the charge, monitoring

the state of charge and the health of the battery cells, monitoring the temperature of the battery pack. In

temperature controls made under different test conditions, BMS's longevity was ensured using an aluminum

heatsink with double fans.