基于壅塞流的动力电池防爆阀泄压特性的动态仿真

doi:10.19799/j.cnki.2095-4239.2022.0442

摘要/Abstract

摘要：

防爆阀作为缓解电池系统热失控的被动安全措施，在电芯设计中扮演着非常重要的角色，防爆阀的开启压力、阀体面积及阀体位置对电芯热失控后的泄压过程有着重要影响。本工作主要介绍了动力电池热失控后产热产气导致防爆阀开启的泄压过程，通过理论计算、实验测试及仿真分析相结合的方式，对防爆阀的泄压特性进行了系统阐述与分析。首先，基于流体力学基本原理和方程从理论上对防爆阀的泄压过程进行了分析，阐述了电芯热失控过程中防爆阀开启后的泄压壅塞流基本状态；其次，通过开展无阀电芯的加热热失控和过充热失控两类实验，实验中实时监测了电芯热失控过程中卷芯的温度和电芯的内压，从而得到电芯热失控过程中防爆阀开启前电芯的产热产气速率；最后，对电芯的产热产气及泄压过程进行仿真，基于COMSOL软件，建立了动力电池防爆阀泄压过程的系统模型。且对防爆阀的开启压力、阀体面积及阀体位置等影响因素进行了归类仿真分析，并与实验数据进行了对比验证，得到了较为优化的防爆阀结构设计，为动力电池优化设计提供了一定的参考。

关键词: 动力电池, 防爆阀, 壅塞流, 动态仿真, 泄压特性

Abstract:

As a passive safety measure to prevent the thermal runaway of the battery system, the vent plays a very essential role in cell design. After the cell has reached thermal runaway, the pressure relief procedure is significantly impacted by the opening pressure, area, and position of the vent. This paper mainly presents the pressure relief process of the vent opening caused by heat and gas production after the cell thermal runaway. Through theoretical calculation, experimental test and simulation analysis, the pressure relief features of the vent are systematically described and analyzed. First, the pressure relief process of the vent is examined theoretically based on the basic principles and equations of fluid mechanics, and the basic state of the pressure relief choke flow after the vent is opened in the process of thermal runaway is expounded; Second, by performing two kinds of experiments of heating thermal runaway and overcharging thermal runaway of the cell, the temperature of the jerry roll and the internal pressure of the cell were monitored in real time, to determine the heat and gas production rate before the vent was opened; Finally, a simulation of the cell's pressure relief, gas production, and heat output are performed. The system model for the vent's pressure relief is built using COMSOL, and impacting elements including the vent's opening pressure, area, and position are categorized and simulated. Additionally, the simulation results and test data from experiments are compared. A more optimized structure design of the vent is obtained, which provides a certain reference for the optimal design of the power battery.

Key words: the power battery, vent, choking flow, dynamic simulation, pressure relief characteristics

中图分类号:

TK 02

厉运杰, 张光雨, 祝维文, 闵远远, 饶成飞, 孙言飞, 徐庆庆. 基于壅塞流的动力电池防爆阀泄压特性的动态仿真[J]. 储能科学与技术, 2023, 12(3): 960-967.

Yunjie LI, Guangyu ZHANG, Weiwen ZHU, Yuanyuan MIN, Chengfei RAO, Yanfei SUN, Qingqing XU. The dynamic simulation of pressure relief characteristics of the power battery vent based on choking flow[J]. Energy Storage Science and Technology, 2023, 12(3): 960-967.

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参考文献 15

1	杨荣华. 产业融合背景下的新能源汽车技术发展趋势研究[J]. 时代汽车, 2022(1): 119-120.
	YANG R H. Research on the development trend of new energy vehicle technology under the background of industrial convergence[J]. Auto Time, 2022(1): 119-120.
2	王芳, 王峥, 林春景, 等. 新能源汽车动力电池安全失效潜在原因分析[J]. 储能科学与技术, 2022, 11(5): 1411-1418.
	WANG F, WANG Z, LIN C J, et al. Analysis on potential causes of safety failure of new energy vehicles[J]. Energy Storage Science and Technology, 2022, 11(5): 1411-1418.
3	欧阳陈志, 梁波, 刘燕平, 等. 锂离子动力电池热安全性研究进展[J]. 电源技术, 2014, 38(2): 382-385.
	OUYANG C Z, LIANG B, LIU Y P, et al. Progress of thermal safety characteristics of high power lithium-ion batteries[J]. Chinese Journal of Power Sources, 2014, 38(2): 382-385.
4	葛瑞. 汽车动力电池系统防爆阀的选型与理论计算[J]. 上海汽车, 2021(3): 4-6, 13.
	GE R. Selection and theoretical calculation of explosion-proof valve of EV power battery system[J]. Shanghai Auto, 2021(3): 4-6, 13.
5	蒋南希. 新能源汽车锂电池防爆盖结构设计[J]. 电源技术, 2018, 42(8): 1129-1133.
	JIANG N X. Structure design of explosion proof cap for new energy vehicle[J]. Chinese Journal of Power Sources, 2018, 42(8): 1129-1133.
6	FINEGAN D P, SCHEEL M, ROBINSON J B, et al. In-operando high-speed tomography of lithium-ion batteries during thermal runaway[J]. Nature Communications, 2015, 6: 6924.
7	COMAN P T, RAYMAN S, WHITE R E. A lumped model of venting during thermal runaway in a cylindrical lithium cobalt oxide lithium-ion cell[J]. Journal of Power Sources, 2016, 307: 56-62.
8	FENG X N, REN D S, HE X M, et al. Mitigating thermal runaway of lithium-ion batteries[J]. Joule, 2020, 4(4): 743-770.
9	常修亮, 郑莉莉, 韦守李, 等. 锂离子电池热失控仿真研究进展[J]. 储能科学与技术, 2021, 10(6): 2191-2199.
	CHANG X L, ZHENG L L, WEI S L, et al. Progress in thermal runaway simulation of lithium-ion batteries[J]. Energy Storage Science and Technology, 2021, 10(6): 2191-2199.
10	付一民, 周健, 盛军, 等. 基于某动力电池防水透气防爆阀的仿真研究[J]. 汽车实用技术, 2019(1): 1-3.
	FU Y M, ZHOU J, SHENG J, et al. Simulation research on waterproof and ventilation explosion-proof valve based on a power battery[J]. Automobile Applied Technology, 2019(1): 1-3.
11	杜光超, 郑莉莉, 张志超, 等. 圆柱形高镍三元锂离子电池高温热失控实验研究[J]. 储能科学与技术, 2020, 9(1): 249-256.
	DU G C, ZHENG L L, ZHANG Z C, et al. Experimental study on high temperature thermal runaway of cylindrical high nickel ternary lithium-ion batteries[J]. Energy Storage Science and Technology, 2020, 9(1): 249-256.
12	刘红, 沈少祥, 蒋兰芳, 等. 基于Fluent的船用防爆阀降压特性研究[J]. 机电工程, 2018, 35(10): 1053-1057.
	LIU H, SHEN S X, JIANG L F, et al. Pressure-loss characteristics of marine explosion-proof valve based on Fluent[J]. Journal of Mechanical & Electrical Engineering, 2018, 35(10): 1053-1057.
13	朱飞成, 章军, 王芳. 基于壅塞流的恒负载气动系统的动态仿真[J]. 液压与气动, 2014(9): 123-127.
	ZHU F C, ZHANG J, WANG F. The dynamic simulation of constant loaded pneumatic system based on the choked flow[J]. Chinese Hydraulics & Pneumatics, 2014(9): 123-127.
14	王玮, 田威. 管道阻塞特征对壅塞流的影响[J]. 液压与气动, 2014(6): 55-58, 62.
	WANG W, TIAN W. Effect of pipe blockage characteristic on chocked flow[J]. Chinese Hydraulics & Pneumatics, 2014(6): 55-58, 62.
15	董军, 杨俊. 喷管内有摩擦流动的壅塞和临界参数[J]. 工程热物理学报, 2017, 38(12): 2537-2541.
	DONG J, YANG J. Chock and critical parameters of frictional flow in nozzle[J]. Journal of Engineering Thermophysics, 2017, 38(12): 2537-2541.

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