Analysis of the structure arrangement on the thermal characteristics of Li‐ion battery pack in thermoelectric generator,Energy Science & Engineering

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Analysis of the structure arrangement on the thermal characteristics of Li‐ion battery pack in thermoelectric generator
Energy Science & Engineering ( IF 3.5 ) Pub Date : 2020-07-06 , DOI: 10.1002/ese3.777
WenChao Zhu _{1,

2} , Changjun Xie ₁ , Ying Shi ₁ , Weibo Li ₁ , Zebo Tang ₃

Affiliation

Traditional automobile exhaust contains a large amount of thermal energy. Thermoelectric generators (TEGs) can store recovered electrical energy into battery packs and supply to vehicle‐mounted electrical equipment. A reasonable battery pack structure is designed to facilitate stable vehicle operation based on the actual conditions of the vehicle. This paper presents investigation on thermal performance of air‐cooled li‐ion battery pack in different arrangements. Taking the AVIC (Aviation Industry Corporation of China) lithium battery as the research object, a battery pack model based on T‐type parallel ventilation structure is established in Fluent, and the accuracy of the model is verified through experiments. In the same battery module, there are three typical arrangements of forming battery cells into an equal arrangement, an increasing arrangement, and a decreasing arrangement. The changes of the temperature field of the battery pack under different discharge rates and wind speeds are studied, respectively. Studies have found that battery pack arranged in decreasing order has the best temperature consistency and the temperature difference is reduced by 14.82% and 6.21%, respectively, at 1C and 2C discharge rates, compared to the equally spaced arrangement.

中文翻译：

热电发电机锂离子电池组热特性的结构布置分析

传统的汽车尾气含有大量的热能。热电发电机（TEG）可以将回收的电能存储到电池组中，并提供给车载电气设备。设计合理的电池组结构，以根据车辆的实际状况促进稳定的车辆运行。本文介绍了不同布置的风冷锂离子电池组的热性能研究。以中航工业锂电池为研究对象，在Fluent中建立了基于T型并联通风结构的电池组模型，并通过实验验证了模型的准确性。在同一个电池模块中，有三种典型的布置方式，可将电池单元形成相等的布置，增加的安排和减少的安排。研究了不同放电速率和风速下电池组温度场的变化。研究发现，与等间距排列相比，以1C和2C放电速率，降序排列的电池组具有最佳的温度一致性，并且温度差分别降低了14.82％和6.21％。

更新日期：2020-07-06

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