Thermal modeling and validation of temperature distributions in a prismatic lithium-ion battery at different discharge rates and varying boundary conditions
Thermal modeling and validation of temperature distributions in a prismatic lithium-ion battery at different discharge rates and varying boundary conditions
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DOI：
10.1016/j.applthermaleng.2015.11.019
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发表时间：
2016-03
影响因子：
6.4
通讯作者：
S. Panchal;I. Dincer;M. Agelin-Chaab;R. Fraser;M. Fowler
中科院分区：
文献类型：
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作者：
S. Panchal;I. Dincer;M. Agelin-Chaab;R. Fraser;M. Fowler
本文研究了采用 LiFePO4（也称为 LFP）正极材料的棱柱形锂离子电池的热建模和温升验证。开发的模型以温度分布的形式代表了电池中的主要热现象。神经网络方法用于模型开发。所提出的模型通过在温度和电压曲线方面收集的实验数据进行了验证。除此之外，还研究了具有不同边界条件（BC）和平均表面温度分布的各种放电/充电曲线下电池主表面上的表面温度分布。为此，选择2C和4C的不同放电率以及不同的边界条件（冷却/操作/浴温5°C、15°C、25°C和35°C）。这项研究的结果表明，放电率的增加导致电池主表面上的表面温度分布增加。此外，据观察，改变操作或边界条件会显着影响表面温度分布。
This paper deals with the thermal modeling and validation of temperature rise in a prismatic lithium-ion battery with LiFePO4(also known as LFP) cathode material. The developed model represents the main thermal phenomena in the cell in terms of temperature distribution. A neural network approach is used for the model development. The proposed model is validated with the experimental data collected in terms of temperature and voltage profiles. In addition to this, the surface temperature distributions on the principal surface of the battery are studied under various discharge/charge profiles with varying boundary conditions (BCs) and average surface temperature distributions. For this, the different discharge rates of 2C and 4C and different boundary conditions (cooling/operating/bath temperature of 5 °C, 15 °C, 25 °C, and 35 °C) are selected. The results of this study show that the increased discharge rates result in increased surface temperature distributions on the principal surface of the battery. Furthermore, it is observed that changing the operating or boundary conditions considerably affect the surface temperature distributions.