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An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery

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  • Seyed Saeed Madani

    (Department of Energy Technology, Aalborg University, DK-9220 Aalborg, Denmark)

  • Erik Schaltz

    (Department of Energy Technology, Aalborg University, DK-9220 Aalborg, Denmark)

  • Søren Knudsen Kær

    (Department of Energy Technology, Aalborg University, DK-9220 Aalborg, Denmark)

Abstract

In order to understand the thermal behaviour of a lithium-ion battery, the heat generation within the cell should be determined. The entropic heat coefficient is necessary to determine for the heat generation calculation. The entropic heat coefficient is one of the most important factors, which affects the magnitude of the reversible heat. The purpose of this research is to analyze and investigate the effect of different parameters on the entropic coefficient of lithium titanate oxide batteries. In this research, a lithium ion pouch cell was examined in both charging and discharging situations. The state of charge levels range was considered from 10% to 90%, and vice versa, in 10% increments. The temperature levels vary from 5 °C to 55 °C and the voltage levels vary from 1.5 V to 2.8 V. The effect of different parameters such as initial temperature, state of charge, thermal cycle, time duration for thermal cycles, and procedure prior to the thermal cycle on the entropic coefficient of lithium titanate oxide batteries were investigated. It was concluded that there is a strong influence of the battery cell state of charge on the entropic heat coefficient compared with other parameters.

Suggested Citation

  • Seyed Saeed Madani & Erik Schaltz & Søren Knudsen Kær, 2019. "An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery," Energies, MDPI, vol. 12(14), pages 1-10, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:14:p:2685-:d:247915
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    References listed on IDEAS

    as
    1. Seyed Saeed Madani & Erik Schaltz & Søren Knudsen Kær, 2019. "Simulation of Thermal Behaviour of a Lithium Titanate Oxide Battery," Energies, MDPI, vol. 12(4), pages 1-15, February.
    2. Xiaogang Wu & Siyu Lv & Jizhong Chen, 2017. "Determination of the Optimum Heat Transfer Coefficient and Temperature Rise Analysis for a Lithium-Ion Battery under the Conditions of Harbin City Bus Driving Cycles," Energies, MDPI, vol. 10(11), pages 1-17, October.
    3. Chuan-Wei Zhang & Ke-Jun Xu & Lin-Yang Li & Man-Zhi Yang & Huai-Bin Gao & Shang-Rui Chen, 2018. "Study on a Battery Thermal Management System Based on a Thermoelectric Effect," Energies, MDPI, vol. 11(2), pages 1-15, January.
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    Cited by:

    1. Rouven Christen & Björn Martin & Gerhard Rizzo, 2021. "New Experimental Approach for the Determination of the Heat Generation in a Li-Ion Battery Cell," Energies, MDPI, vol. 14(21), pages 1-14, October.

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