三元锂离子动力电池过充行为特性实验研究

Xiaoqing Zhu; Zhenpo Wang; Cong Wang; Mi Yi

doi:10.19562/j.chinasae.qcgc.2019.05.015

三元锂离子动力电池过充行为特性实验研究

Translated title of the contribution: An Experimental Study on Overcharge Behaviors of Lithium-ion Power Battery with LiNi_0.6Co_0.2Mn_0.2O₂ Cathode

Xiaoqing Zhu, Zhenpo Wang^*, Cong Wang, Mi Yi

^*Corresponding author for this work

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

In this paper, the overcharge behaviors of 30 A•h pouch lithium-ion battery with LiNi_0.6Co_0.2Mn_0.2O₂ (NCM622) cathode for electric vehicles are studied under different overcharge current rates (C-rates). The results indicate that the overcharge process can be divided into four stages. The highest surface temperature position of the cell is not fixed. In most test time, the maximum temperature difference (MTD) is less than 1℃. It's worth noting that the C-rate has a great influence on the overcharge behaviors of Li-ion batteries. As C-rate increases, so do the maximum temperature and crest voltage, while the overcharge time and state of charge (SOC) value at the end of the test decrease as the C-rate increases. The study can provide a reference for the safety design of nickel-rich lithium-ion batteries and the safety management of the battery management system (BMS) for overcharge fault.

Translated title of the contribution	An Experimental Study on Overcharge Behaviors of Lithium-ion Power Battery with LiNi_0.6Co_0.2Mn_0.2O₂ Cathode
Original language	Chinese (Traditional)
Pages (from-to)	582-589
Number of pages	8
Journal	Qiche Gongcheng/Automotive Engineering
Volume	41
Issue number	5
DOIs	https://doi.org/10.19562/j.chinasae.qcgc.2019.05.015
Publication status	Published - 25 May 2019

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title = "三元锂离子动力电池过充行为特性实验研究",

abstract = "In this paper, the overcharge behaviors of 30 A•h pouch lithium-ion battery with LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode for electric vehicles are studied under different overcharge current rates (C-rates). The results indicate that the overcharge process can be divided into four stages. The highest surface temperature position of the cell is not fixed. In most test time, the maximum temperature difference (MTD) is less than 1℃. It's worth noting that the C-rate has a great influence on the overcharge behaviors of Li-ion batteries. As C-rate increases, so do the maximum temperature and crest voltage, while the overcharge time and state of charge (SOC) value at the end of the test decrease as the C-rate increases. The study can provide a reference for the safety design of nickel-rich lithium-ion batteries and the safety management of the battery management system (BMS) for overcharge fault.",

keywords = "Charging rate, Lithium-ion power battery, Overcharge behaviors, Thermal runaway",

author = "Xiaoqing Zhu and Zhenpo Wang and Cong Wang and Mi Yi",

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doi = "10.19562/j.chinasae.qcgc.2019.05.015",

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AU - Zhu, Xiaoqing

AU - Wang, Zhenpo

AU - Wang, Cong

AU - Yi, Mi

PY - 2019/5/25

Y1 - 2019/5/25

N2 - In this paper, the overcharge behaviors of 30 A•h pouch lithium-ion battery with LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode for electric vehicles are studied under different overcharge current rates (C-rates). The results indicate that the overcharge process can be divided into four stages. The highest surface temperature position of the cell is not fixed. In most test time, the maximum temperature difference (MTD) is less than 1℃. It's worth noting that the C-rate has a great influence on the overcharge behaviors of Li-ion batteries. As C-rate increases, so do the maximum temperature and crest voltage, while the overcharge time and state of charge (SOC) value at the end of the test decrease as the C-rate increases. The study can provide a reference for the safety design of nickel-rich lithium-ion batteries and the safety management of the battery management system (BMS) for overcharge fault.

AB - In this paper, the overcharge behaviors of 30 A•h pouch lithium-ion battery with LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode for electric vehicles are studied under different overcharge current rates (C-rates). The results indicate that the overcharge process can be divided into four stages. The highest surface temperature position of the cell is not fixed. In most test time, the maximum temperature difference (MTD) is less than 1℃. It's worth noting that the C-rate has a great influence on the overcharge behaviors of Li-ion batteries. As C-rate increases, so do the maximum temperature and crest voltage, while the overcharge time and state of charge (SOC) value at the end of the test decrease as the C-rate increases. The study can provide a reference for the safety design of nickel-rich lithium-ion batteries and the safety management of the battery management system (BMS) for overcharge fault.

KW - Charging rate

KW - Lithium-ion power battery

KW - Overcharge behaviors

KW - Thermal runaway

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U2 - 10.19562/j.chinasae.qcgc.2019.05.015

DO - 10.19562/j.chinasae.qcgc.2019.05.015

M3 - 文章

AN - SCOPUS:85070520561

SN - 1000-680X

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JO - Qiche Gongcheng/Automotive Engineering

JF - Qiche Gongcheng/Automotive Engineering

IS - 5

ER -

三元锂离子动力电池过充行为特性实验研究

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