Analysis on Heat Generation in a Lithium-Ion Battery Under Constant Power Discharging

被引：0
|
作者：
Gan Y. [1 ]
Tan M. [1 ]
Liang J. [1 ]
Luo Y. [1 ]
Wang J. [1 ]
He L. [1 ]
机构：
[1] School of Electric Power Engineering, Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, South China University of Technology, Guangzhou, 510640, Guangdong
来源：
| 1600年 / South China University of Technology卷 / 48期
基金：
中国国家自然科学基金;
关键词：
Constant power discharging; Discharging power; Electrochemical-thermal coupled model; Heat generation characteristics; Lithium-ion battery;
D O I：
10.12141/j.issn.1000-565X.190708
中图分类号：
学科分类号：
摘要：
Constant power discharging is a typical discharging mode of battery in the actual operating. The heat generated in the discharging process has a big influence on the performance and safe operation of battery. In order to study the heat generation characteristics of battery under constant power discharging, firstly, an electrochemical-thermal coupling model was established. Then, the rationality of the model was verified by experiments. Finally, the heat generation characteristics of the current collector, positive and negative electrodes, separator in a lithium-ion battery were studied. And the effects of discharging power and thickness of the positive electrode on the heat generation of each layer in the battery cell were discussed. The results show that, firstly, the heat generation rate of the negative electrode exhibits the highest degree of variation; secondly, the discharging power has little effect on the ratio of the heat generation of each layer to the total heat generation; thirdly, the heat generation ratio of the positive electrode is the largest (the ratios are all above 70% under different discharging powers); finally, the thickness increase of the positive electrode can reduce the heat generation of the battery, but this effect will decrease as the thickness of the electrode increases. © 2020, Editorial Department, Journal of South China University of Technology. All right reserved.
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页码：1 / 8
页数：7
相关论文
共 19 条
  • [1] WANG J, GAN Y, LIANG J, Et al., Sensitivity analysis of factors influencing a heat pipe-based thermal ma-nagement system for a battery module with cylindrical cells, Applied Thermal Engineering, 151, pp. 475-485, (2019)
  • [2] GAN Yunhua, WANG Jianqin, LIANG Jialin, Cooling performance of cylindrical battery pack based on thermal management system with heat pipe, CIESC Journal, 69, 5, pp. 1964-1971, (2018)
  • [3] LIANG J, GAN Y, LI Y., Investigation on the thermal performance of a battery thermal management system using heat pipe under different ambient temperatures, Energy Conversion and Management, 155, pp. 1-9, (2018)
  • [4] CHEN S, WAN C, WANG Y., Thermal analysis of lithium-ion batteries, Journal of Power Sources, 140, 1, pp. 111-124, (2004)
  • [5] NIETO N, DIAZ L, GASTELURRUTIA J, Et al., Thermal modeling of large format lithium-ion cells, Journal of the Electrochemical Society, 2, pp. A212-A217, (2012)
  • [6] JIANG J, RUAN H, SUN B, Et al., A reduced low-temperature electro-thermal coupled model for lithium-ion batteries, Applied Energy, 177, pp. 804-816, (2016)
  • [7] KWON K, SHIN C, KANG T, Et al., A two-dimensional modeling of a lithium-polymer battery, Journal of Power Sources, 163, 1, pp. 151-157, (2006)
  • [8] TANG Y, WU L, WEI W, Et al., Study of the thermal properties during the cyclic process of lithium ion power batteries using the electrochemical-thermal coupling model, Applied Thermal Engineering, 137, pp. 11-22, (2018)
  • [9] LIANG J, GAN Y, SONG W, Et al., Thermal-electrochemical simulation of electrochemical characteristics and temperature difference for a battery module under two-stage fast charging, Journal of Energy Storage, 29, (2020)
  • [10] LIANG J, GAN Y, LI Y, Et al., Thermal and electrochemical performance of a serially connected battery module using a heat pipe-based thermal management system under different coolant temperatures, Energy, 189, (2019)
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