Simulation on lithium ion battery discharge process with large current

被引：0

作者：

Dong T. ^{[1
]}

Peng P. ^{[1
]}

Wang Y. ^{[1
]}

Cao W. ^{[1
]}

Zheng Y. ^{[2
]}

Lei B. ^{[2
,3
]}

Jiang F. ^{[1
]}

机构：

[1] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, CAS Key Laboratory of Renewable Energy, Guangzhou, 510640, Guangdong

[2] China Southern Power Grid, Guangzhou, 510063, Guangdong

[3] Electric Power Research Institute, China Southern Power Grid, Guangzhou, 510063, Guangdong

来源：

Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 08期

关键词：

Chemical reaction; Evolution of electrochemical parameters; Heat transfer; Large current discharge; Li-ion battery; Transport processes;

D O I：

10.11949/0438-1157.20200279

中图分类号：

学科分类号：

摘要：

With the widespread application of lithium-ion batteries, the demand for batteries to operate at higher power and higher rates is becoming more and more urgent. It is necessary to explore the electro-thermal behavior and internal key parameters of lithium-ion batteries at high current operation. In this paper, a combined model of the electrochemical- thermal (ECT) coupling model and the thermal model for abusive reaction of battery materials is established. The electrical-thermal behaviors of a prismatic single-layer LiCoO2/C cell during discharge processes of various C-rates are simulated. The key electrochemical parameters and their dynamics for the cell during 1C and 14C discharge processed are analyzed and compared. The results show that with the increase of discharge current, heat accumulation in the battery will trigger the exothermic reactions of battery materials, making the battery vulnerable to thermal runaway. Besides, the concentration of Li-ion in the electrolyte, the transfer current density, the over potential, the electrolyte potential and the lithium concentration at the surface of solid particles fluctuate greatly during high C-rate discharge processes, leading to significant differences of species concentration, density and electric potential in the relevant regions inside the battery. © 2020, Chemical Industry Press Co., Ltd. All right reserved.

引用

页码：3710 / 3721

页数：11

共 32 条

[1] Liu H, Wei Z, He W, Et al., Thermal issues about Li-ion batteries and recent progress in battery thermal management systems: a review, Energy Conversion and Management, 150, pp. 304-330, (2017)
[2] Cheng G Y, Gao L, Gu H H, Et al., Developing and fast charge performance of high power Li-ion battery, Battery Bimonthly, 49, 2, pp. 94-97, (2019)
[3] Chen Y., The study of fast-charging control strategy of lithium-ion battery on electric vehicle, (2018)
[4] Guo J P., Research on the characteristics of energy storage lithium-ion battery with constant current and constant power, (2018)
[5] Kim G H, Pesaran A, Spotnitz R., A three-dimensional thermal abuse model for lithium-ion cells, Journal of Power Sources, 170, 2, pp. 476-489, (2007)
[6] Lu L, Han X, Li J, Et al., A review on the key issues for lithium-ion battery management in electric vehicles, Journal of Power Sources, 226, pp. 272-288, (2013)
[7] Dong T, Peng P, Cao W J, Et al., Research on thermal management and safety of Li-ion batteries, Advances in New and Renewable Energy, 7, 1, pp. 50-59, (2019)
[8] Deng Y F, Zeng Z O., Modern Electrochemistry, (2014)
[9] Liang B, Duan T P, Tang S W., Chemical Reaction Engineering, (2010)
[10] Grandjean T, Barai A, Hosseinzadeh E, Et al., Large format lithium ion pouch cell full thermal characterisation for improved electric vehicle thermal management, Journal of Power Sources, 359, pp. 215-225, (2017)

← 1 2 3 4 →