考虑参数时变的电池包电热耦合建模

doi:10.19799/j.cnki.2095-4239.2022.0219

储能科学与技术 ›› 2022, Vol. 11 ›› Issue (10): 3180-3190.doi: 10.19799/j.cnki.2095-4239.2022.0219

考虑参数时变的电池包电热耦合建模

罗勇(), 周振雨, 申付涛, 黄欢, 邱晓斌, 翁勇永

重庆理工大学，汽车零部件先进制造技术教育部重点实验室，重庆 400054

收稿日期:2022-04-24 修回日期:2022-05-13 出版日期:2022-10-05 发布日期:2022-10-10
通讯作者: 罗勇 E-mail:cquluo@126.com
作者简介:罗勇（1983—），男，博士，副教授，从事新能源汽车及车辆动力控制相关研究，E-mail：cquluo@126.com。
基金资助:
国家自然科学基金资助(51305475);重庆市教委科学技术研究项目(KJQN201801143);重庆市自然科学基金面上项目(cstc2019jcyj-msxmX0308);重庆理工大学重大科研项目同步开展;基础及应用基础研究(2022TBZ003)

Electrothermal coupling modeling of battery pack considering time-varying parameters

Yong LUO(), Zhenyu ZHOU, Futao SHEN, Huan HUANG, Xiaobin QIU, yongyong WENG

Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Chongqing University of Technology, Chongqing 400054, China

Received:2022-04-24 Revised:2022-05-13 Online:2022-10-05 Published:2022-10-10
Contact: Yong LUO E-mail:cquluo@126.com

摘要/Abstract

摘要：

在对动力电池包散热系统进行设计时，以往采用有限元建模估计电池温度存在着不能与控制算法进行实时仿真的问题，基于此提出一种在MATLAB/Simulink中依据电池的生散热特性搭建的电热耦合模型，用于实时估计电池包温度变化。动力电池电热耦合模型主要由电池等效电路模型及热模型两部分组成，利用电池充放电试验，使用遗传算法离线辨识时变条件下的等效电路模型参数，热模型参数通过理论分析动力电池的产热方式和散热方式计算得到。等效电路模型和电池热模型通过内阻-温度的关系相互耦合，从而建立单体电池电热耦合模型。通过分析电池模组中热量传递方式，建立冷却流道温度模型，从而进一步完善电池包的电热耦合模型。将电池耦合模型与通过STAR-CCM+数值模拟温度对比，二者误差基本处于1 ℃左右；同时电热耦合模型端电压仿真结果能较好地跟踪实测端电压；而且能合理地描述电池包内降温过程温度分布。研究结果表明电热耦合模型可以有效估计实际电池包的温度变化，从而达到缩短电池包热管理控制策略开发周期的目的。

关键词: 锂离子电池, 参数辨识, 电热耦合模型, STAR-CCM+

Abstract:

When designing a power battery-pack cooling system, the use of finite element modeling to estimate the battery temperature cannot be simulated in real-time using the control algorithm. Thus, an electrothermal-coupling model built in MATLAB/Simulink based on the heat generation and dissipation characteristics of the battery is proposed to estimate the temperature change of the battery pack in real-time. The electrothermal-coupling model of the power battery is composed of two parts: the battery equivalent circuit and thermal models. The battery charge and discharge test is used, and the genetic algorithm is used to identify the equivalent circuit model parameters under the time-varying conditions offline. The thermal model parameters are theoretically analyzed. Heat generation and dissipation methods were calculated. The equivalent circuit and battery thermal models are coupled with each other using the relationship between internal resistance and temperature, thus, establishing a single battery electrothermal-coupled model. The temperature model of the cooling channel is established to improve the electrothermal-coupling model of the battery pack by analyzing the heat-transfer mode of the battery module. The temperature difference between the battery-coupling model and numerical simulation using STAR-CCM+ is 1 ℃; the terminal-voltage simulation results of the electrothermal-coupling model can track the measured terminal voltage and can describe the battery pack at the same time. The Temperature distribution during the internal cooling process. The research results show that the electrothermal-coupled model can estimate the temperature change of the actual battery pack to shorten the development cycle of the thermal management control strategy for the battery pack.

Key words: lithium ion battery, parameter identification, electrothermal coupling model, STAR-CCM+

中图分类号:

TM 911

罗勇, 周振雨, 申付涛, 黄欢, 邱晓斌, 翁勇永. 考虑参数时变的电池包电热耦合建模[J]. 储能科学与技术, 2022, 11(10): 3180-3190.

Yong LUO, Zhenyu ZHOU, Futao SHEN, Huan HUANG, Xiaobin QIU, yongyong WENG. Electrothermal coupling modeling of battery pack considering time-varying parameters[J]. Energy Storage Science and Technology, 2022, 11(10): 3180-3190.

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考虑参数时变的电池包电热耦合建模

Electrothermal coupling modeling of battery pack considering time-varying parameters

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