What is it about?
Experiment-based research determines how surface temperature distribution, thermal behavior, and performance change in a battery cell together. A pouch-type commercial test cell with an anode based on Lithium Titanate Oxide (LTO) has a 13Ah capacity. Contact thermocouples record temperatures on their surface while an isothermal calorimeter measures its heat flux at once to find out how much heat it generates inside it. Then it calculates its efficiency as an important performance constituent at different temperatures (0°C and 25°C) when it undergoes continuous constant current 1C charge and discharge cycles. Its highest rise in temperature over its surface happens there too. It discusses its calibration and experimentation of heat flow for calorimetric measurement. Its experimental procedure precisely determines its heat generation and efficiency.
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Why is it important?
The effect of temperature on battery performance and efficiency is better understood through this study. It emphasizes the importance of keeping track of surface temperatures to prevent batteries from overheating or thermal runaway. The method used in this experiment could serve as a foundation for future studies that seek to enhance battery design and performance. This research may also have implications for fields such as electric vehicles, renewable energy storage systems, and portable electronics that require dependable power sources. This paper advances our understanding of how lithium-ion batteries operate under different conditions.
Perspectives
The evolution of surface temperature distribution, thermal behavior, and performance in battery cells is measured (using a novel methodology). The study shows how battery efficiency changes with different temperatures through continuous constant current 1C charge and discharge at 0°C and 25°C. Contact thermocouples are used to identify the highest increase in cell surface temperature during charging/discharging cycles. Simultaneous measurement with an isothermal calorimeter determines the heat generation inside the cell to calculate efficiency as a key performance constituent. Heat flow calibration experimentation for precise calorimetric measurements is also performed. These findings enhance our understanding of how lithium-ion batteries operate under various conditions that can assist in designing more efficient energy storage systems.
Dr. Mohammad Rezwan Khan
Aalborg Universitet
Read the Original
This page is a summary of: Determination of the behavior and performance of commercial Li-Ion pouch cells by means of isothermal calorimeter, April 2016, Institute of Electrical & Electronics Engineers (IEEE),
DOI: 10.1109/ever.2016.7476441.
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