Authors:

Sidney Evan Ryan

Date Created:

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About Paper:

As many countries strive towards carbon neutrality, electric vehicles (EVs) have become the forefront of research. One of the major challenges faced by EV manufacturers is battery thermal management systems (BTMSs). EVs contain lithium-ion batteries (LIBs) that produce heat as a byproduct of their charging and discharging cycles. Accurately measuring the surface temperature of LIBs throughout their applications is essential for creating safe and reliable vehicles. The present work aims to investigate the effectiveness of different methods for measuring LIB temperatures. The experimental procedure mainly consists of measuring the external temperature of various 18650 LIBs placed within different dielectric fluids. The fluids will be deionized water, AmpCool® AC-110, and fluids from our collaborator, Valvoline. Thermocouples are mounted along the exterior of the LIBs before they are submerged in fluids. Different configurations will be investigated by varying the orientation, location, thermal interface materials (TIMs), and contact methods. It is observed that mounting the thermocouples at XXX orientation provided the most accurate data for the LIBs at a discharge rate of 4/5 C. Utilizing TIM with/without XXX tape proved to be beneficial to recording more accurate and consistent data. This research will serve as a foundation for understanding proper temperature collection in real case scenarios. Future research can use these results towards generating more accurate data in research and automotive applications. Keywords: Electric Vehicles; Immersion Cooling; Lithium-Ion Batteries; Thermocouples; Natural Convection

Source:

Purdue University / 2024

Topics:

No topics listed

Co-authors:

Sidney Evan Ryan