Determination of the behavior and performance of commercial Li-Ion pouch cells by means of isothermal calorimeter

Abstract

In this experiment-based research, there is an attempt to determine the evolution of surface temperature distribution, thermal behaviour and performance of a battery cell at the same time. The pouch type commercial test cell has a 13Ah capacity and Lithium Titanate Oxide (LTO) based anode. Temperatures on the surface of the cell are measured using contact thermocouples. Additionally, the heat flux is simultaneously measured with the isothermal calorimeter. This heat flux measurement is used for determining the heat generation inside the cell. Consequently, the important performance constituent of the battery cell efficiency is calculated. Those are accomplished at different temperature levels (0°C and 25°C) of continuous constant current 1C charge and discharge. Also, the maximal increase in the battery temperature over the cell surface is found on the battery cell surface. The heat flow calibration and experimentation for calorimetric measurement are deliberated. The experimental procedure is a very precise determination of the heat generation and the efficiency of the battery cell.

Towards an Ultimate Battery Thermal Management System: A Review

“…Calorimetry is used for heat-generation measurements [39,41,[118][119][120][121][122]. At constant temperature conditions, isothermal calorimetry measures thermal power, i.e., heat-production rate.…”

“…BTMS is comprised of a combination of hardware and software. It is used fundamentally to preserve the temperature of battery cells in a pack at an optimal range [39][40][41][42][43]. It helps to enhance the lifetime while ensuring safe and secure operation of the battery pack [44][45][46][47].…”

Multiphysics based thermal modeling of a pouch lithium-ion battery cell for the development of pack level thermal management system

“…A large commercial isothermal calorimeter IBC 284 manufactured by Netzsch™ is employed for heat flux measurement. The detailed experimental setup, as well as corresponding materials and equipment, can be found in [37].…”

Battery Efficiency Measurement for Electrical Vehicle and Smart Grid Applications Using Isothermal Calorimeter: Method, Design, Theory and Results

“…Additionally, it should provide precise measurements through complete thermal isolation to ensure the heat measured is entirely from the battery cell. Besides, it is needed to analyze heat loads generated by complete battery systems [24,25,29,30]. Three typical calorimeter configurations are presented in Table 2.…”

“…The results lead to a deeper understanding of the efficiency and heat generation behavior of the specific battery cell. Additionally, the result of the research can be incorporated in constructing a precise datasheet of a specific type of battery cell which can assist the researchers, engineers, and different stakeholders to enhance diverse aspects of battery research [29,31]. Inevitably identifying and understanding those behaviors and performance indicators are critical to ensuring the proper operation of the battery [29,31].…”