Experimental study of heat generation rate during discharge of lifePO4 pouch cells of different nominal capacities and thickness

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Experimental study of heat generation rate during discharge of lifePO4 pouch cells of different nominal capacities and thickness. / Arora, Shashank; Kapoor, Ajay.

julkaisussa: Batteries, Vuosikerta 5, Nro 4, 70, 01.12.2019.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{9509f95441ab4ba2a564c85d701c1226,
title = "Experimental study of heat generation rate during discharge of lifePO4 pouch cells of different nominal capacities and thickness",
abstract = "High manufacturing cost and thermal stability of Li-ion battery cells are currently the two main deterrents to prolific demand for electric vehicles. A plausible solution to this issue is a modular/scalable battery thermal management system (TMS). A modular TMS can ensure thermal reliability for battery cells of different capacities and size without needing major structural revision besides facilitating mass-production. However, understanding the relationship of heat generation rates with cell capacity and thickness is essential for developing a scalable TMS. The present paper discusses results derived from an experimental investigation undertaken with this purpose. Heat generation rates for LiFePO4 pouch cells of different nominal capacities are measured at discharge rates of 0.33C, 1C and 3C in ambient temperatures ranging between −10 and 50◦C using a custom-designed calorimeter. It is observed that heat generation rates of the LiFePO4 pouch cells become independent of their nominal capacity and thickness if the ambient temperature is regulated at 35◦C. In ambient temperatures lower than 35◦C though, the thin battery cells are found to be generating heat at rates greater than those of thick battery cells and vice-versa at temperatures over 35◦C for all discharge rates.",
keywords = "Adiabatic calorimeter, Battery electrodes, Electric vehicles, Heat generation, Inverse heat conduction problems, Li-ion battery packs, Modular battery thermal management systems",
author = "Shashank Arora and Ajay Kapoor",
year = "2019",
month = "12",
day = "1",
doi = "10.3390/batteries5040070",
language = "English",
volume = "5",
journal = "Batteries",
issn = "2313-0105",
publisher = "MDPI AG",
number = "4",

}

RIS - Lataa

TY - JOUR

T1 - Experimental study of heat generation rate during discharge of lifePO4 pouch cells of different nominal capacities and thickness

AU - Arora, Shashank

AU - Kapoor, Ajay

PY - 2019/12/1

Y1 - 2019/12/1

N2 - High manufacturing cost and thermal stability of Li-ion battery cells are currently the two main deterrents to prolific demand for electric vehicles. A plausible solution to this issue is a modular/scalable battery thermal management system (TMS). A modular TMS can ensure thermal reliability for battery cells of different capacities and size without needing major structural revision besides facilitating mass-production. However, understanding the relationship of heat generation rates with cell capacity and thickness is essential for developing a scalable TMS. The present paper discusses results derived from an experimental investigation undertaken with this purpose. Heat generation rates for LiFePO4 pouch cells of different nominal capacities are measured at discharge rates of 0.33C, 1C and 3C in ambient temperatures ranging between −10 and 50◦C using a custom-designed calorimeter. It is observed that heat generation rates of the LiFePO4 pouch cells become independent of their nominal capacity and thickness if the ambient temperature is regulated at 35◦C. In ambient temperatures lower than 35◦C though, the thin battery cells are found to be generating heat at rates greater than those of thick battery cells and vice-versa at temperatures over 35◦C for all discharge rates.

AB - High manufacturing cost and thermal stability of Li-ion battery cells are currently the two main deterrents to prolific demand for electric vehicles. A plausible solution to this issue is a modular/scalable battery thermal management system (TMS). A modular TMS can ensure thermal reliability for battery cells of different capacities and size without needing major structural revision besides facilitating mass-production. However, understanding the relationship of heat generation rates with cell capacity and thickness is essential for developing a scalable TMS. The present paper discusses results derived from an experimental investigation undertaken with this purpose. Heat generation rates for LiFePO4 pouch cells of different nominal capacities are measured at discharge rates of 0.33C, 1C and 3C in ambient temperatures ranging between −10 and 50◦C using a custom-designed calorimeter. It is observed that heat generation rates of the LiFePO4 pouch cells become independent of their nominal capacity and thickness if the ambient temperature is regulated at 35◦C. In ambient temperatures lower than 35◦C though, the thin battery cells are found to be generating heat at rates greater than those of thick battery cells and vice-versa at temperatures over 35◦C for all discharge rates.

KW - Adiabatic calorimeter

KW - Battery electrodes

KW - Electric vehicles

KW - Heat generation

KW - Inverse heat conduction problems

KW - Li-ion battery packs

KW - Modular battery thermal management systems

UR - http://www.scopus.com/inward/record.url?scp=85074845280&partnerID=8YFLogxK

U2 - 10.3390/batteries5040070

DO - 10.3390/batteries5040070

M3 - Article

VL - 5

JO - Batteries

JF - Batteries

SN - 2313-0105

IS - 4

M1 - 70

ER -

ID: 40550045