PARAMETRIC STUDY OF NOVEL LIQUID BLANKET BATTERY THERMAL MANAGEMENT SYSTEM

• Main Author: Nataniel, Theodore
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/62110
• Institution: Institut Teknologi Bandung

Rising greenhouse gas emitted from vehicles in Indonesia drives electric vehicle (EV) usage in Indonesia transportation sector to be increased. EV provides benefits compared to internal combustion engine vehicle (ICEV) for its clean operation, however it still requires adequate battery pack to cover its range. The heat from the battery which is proportional with the battery pack size must be dissipated to prevent consequences such as battery quality degradation and explosion. A battery thermal management system (BTMS) is introduced to manage the heat generated by heat transfer principles. Liquid-cooled BTMS utilizes coolant which can either immerse the batteries inside battery pack or flow inside a heat exchanger that contacts the battery cells. Although requires more component, liquid cooled BTMS yields optimal cooling performance using common technology. In this study, a parametric study of liquid blanket BTMS is performed to understand the effect of a parameter variation. The study limits the amount batteries to be cooled as twenty battery cells due to computing power limitation. Parameters to be varied are liquid blanket BTMS tube wrap angle and fluid width. The variation for the wrap angle ranges from 50o to 90o and the fluid width ranges from 6 mm to 2 mm. A base case is set as a point zero reference which simulates the explosion situation at 40oC. The observed parameters are maximum temperature, fluid pressure drop, and battery area density. The result of the parametric study shows that increase in wrap angle decreases battery maximum temperature up to 4.74 oC and decrease in fluid width decreases battery maximum temperature up to 1.05 oC. Increase in wrap angle incurs pressure drop up to 9.8 Pa and decrease in fluid width incurs pressure drop up to 102.7 Pa. Increase in wrap angle increases battery area density up to 541 batteries/m2 and decrease in fluid width increases battery area density up to 491 batteries/m2.