锂离子电池组结构热仿真

doi:10.19799/j.cnki.2095-4239.2019.0214

储能科学与技术 ›› 2020, Vol. 9 ›› Issue (1): 266-270.doi: 10.19799/j.cnki.2095-4239.2019.0214

锂离子电池组结构热仿真

田刚领¹(), 刘皓², 杨凯²(), 张慧卿³, 罗军¹

1. 河南平高电气股份有限公司，河南平顶山 467001
2. 中国电力科学研究院有限公司，北京 100192
3. 北京化工大学，北京 100029

收稿日期:2019-09-24 修回日期:2019-10-30 出版日期:2020-01-05 发布日期:2019-10-24
通讯作者: 杨凯 E-mail:tiangangling@pinggao.sgcc.com.cn;yangkai@epri.sgcc.com.cn
作者简介:田刚领（1977—），男，硕士研究生，研究方向为储能技术，E-mail：tiangangling@pinggao.sgcc.com.cn;
基金资助:
河南省重大科技专项(171100210200)

Thermal simulation analysis of a lithium-ion battery group

TIAN Gangling¹(), LIU Hao², YANG Kai²(), ZHANG Huiqing³, LUO Jun¹

1. Henan Pinggaoelectic Co. , Ltd. Pingdingshan 467001, Henan, China
2. China Electric Power Research Institute, Beijing 100192, China
3. Beijing University of Chemical Technology, Beijing 100029, China

Received:2019-09-24 Revised:2019-10-30 Online:2020-01-05 Published:2019-10-24
Contact: Kai YANG E-mail:tiangangling@pinggao.sgcc.com.cn;yangkai@epri.sgcc.com.cn

摘要/Abstract

摘要：

锂离子电池组的热特性对于电池组的运行维护具有重要影响。将单体电池热模型简化为均匀发热体，减少仿真流程中的计算量，针对锂离子电池组进行热仿真分析，分析其结构的合理性，并通过实验验证其准确性。利用绝热加速量热仪（accelerating rate calorimeter，ARC）采集锂离子电池的热特性参数，利用简化的电池单体热模型，选择风冷作为冷却方式，通过CFD（computational fluid dynamics）以及CAD（computer aided design）软件建立锂离子电池组的热模型并进行求解，分析电池组内部流场分布、电池组运行时的温度数据，最后通过样机实验测试验证仿真结果的准确性。该电池组在0.5 C恒流充放电条件下，电池模拟温度与实验测试温度变化趋势一致，电池组模拟最高温度与实验测试温度误差0.9 ℃，电池模拟温差与实验测试温差误差0.2 ℃。

关键词: CFD仿真, 锂离子电池组, 流场, 温度场

Abstract:

The thermal characteristics of the lithium-ion battery packs are of considerable significance for their operation and maintenance. In this study, a cell thermal model is simplified into a uniform heating unit to simplify the computation during the simulation process. The novel model structure is validated through thermal simulation using a lithium-ion battery pack, and its accuracy can be experimentally verified. Further, the thermal characteristic parameters of the lithium-ion cells are acquired via an accelerating rate calorimeter. Subsequently, a lithium-ion battery pack thermal model is constructed and solved using computational fluid dynamics and computer-aided design programs based on the simplified cell thermal model and considering an air cooling scenario. The internal flow field distribution and in-service temperature data of the battery pack are analyzed. Finally, the accuracy of the simulation result is verified through a prototype experiment. When charged and discharged at a constant current of 0.5C, the simulated temperature of this battery pack exhibits the same variation profile as that exhibited by the experimental measurement with an error of 0.9 °C being observed with respect to the maximum temperature and 0.2 °C being observed with respect to the temperature difference in case of the simulation and experimental results.

Key words: CFD simulation, Li-ion battery group, flow field, temperature field

中图分类号:

TM 911

田刚领, 刘皓, 杨凯, 张慧卿, 罗军. 锂离子电池组结构热仿真[J]. 储能科学与技术, 2020, 9(1): 266-270.

TIAN Gangling, LIU Hao, YANG Kai, ZHANG Huiqing, LUO Jun. Thermal simulation analysis of a lithium-ion battery group[J]. Energy Storage Science and Technology, 2020, 9(1): 266-270.

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锂离子电池组结构热仿真

Thermal simulation analysis of a lithium-ion battery group

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