Simplification strategy research on hard‐cased Li‐ion battery for thermal modeling,International Journal of Energy Research

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Simplification strategy research on hard‐cased Li‐ion battery for thermal modeling
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-01-28 , DOI: 10.1002/er.5140
Xifeng Cui _{1,

2} , Jian Zeng ₃ , Hongliang Zhang _{1,

4} , Jianhong Yang ₁ , Jia Qiao ₁ , Jie Li ₁ , Wangxing Li ₁

Affiliation

Numerical simulation is widely used in research and design of the battery thermal management system (BTMS). Battery cells are commonly homogenized to a block for module or pack level modeling. However, how the homogenization method affects results is not proven. This paper works on a hard‐cased Li‐ion battery to find a proper simplification method. First, a detailed three‐dimensional thermal model (model A) is set up and validated by experimental data. Then, the other three models with different simplification strategies are proposed. They are model B (the cell is homogenized to a block), model C (the cell preserves only core region and housing case), and model D (based on model C, the thin insulation films are also considered). Take the results of model A as a reference, the calculation accuracy and efficiency are summarized. It is found that model B shows the best efficiency and is a proper choice for evaluation of temperature dynamics, while model D is more recommended when the internal temperature distribution of the battery is more concerned.

中文翻译：

硬壳锂离子电池热模型简化策略研究

数值模拟广泛用于电池热管理系统（BTMS）的研究和设计。通常将电池单元均质化为块，以进行模块或电池组级建模。但是，均质化方法如何影响结果尚未得到证实。本文研究了硬壳锂离子电池，以找到合适的简化方法。首先，建立详细的三维热模型（模型A）并通过实验数据进行验证。然后，提出了其他三种具有不同简化策略的模型。它们是模型B（将单元均质化为块），模型C（单元仅保留核心区域和外壳）和模型D（基于模型C，还考虑了薄绝缘膜）。以模型A的结果为参考，总结了计算精度和效率。

更新日期：2020-01-28

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