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作者:

Wang, Bing (Wang, Bing.) | Ji, Changwei (Ji, Changwei.) (学者:纪常伟) | Wang, Shuofeng (Wang, Shuofeng.) | Pan, Shuai (Pan, Shuai.)

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EI Scopus SCIE

摘要:

The frequent accidents of power lithium-ion battery have become the major reason to hinder the development of electric vehicles. In this paper, the thermal runaway process for a 32650 battery is analyzed based on 300 degrees C oven heating experiment in adiabatic rate calorimeter, the rise of temperature, the drop of voltage and the leakage of electrolyte are observed before exploding, which could be used as predictor variables for thermal runaway warning. A large number of smoke releases and diffuses after explosion, which could be utilized as a criterion for determining the explosion. And a lumped chemical reaction kinetics model coupled with three-dimensional heat transfer model is constructed for further discussion. The thermal runaway process of the battery could be accurately calculated by the coupled model. Thermal radiation plays a more important role in heat transfer than heat convection in the process of thermal runaway. The explosion happens when the temperature achieves around 230 degrees C, and the active material mainly starts to decompose at this moment.

关键词:

Finite element method Power lithium-ion battery Oven heating Thermal runaway

作者机构:

  • [ 1 ] [Ji, Changwei]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Lab New Energy Vehicles, Beijing 100124, Peoples R China
  • [ 2 ] [Ji, Changwei]Beijing Univ Technol, Key Lab Reg Air Pollut Control, Beijing 100124, Peoples R China

通讯作者信息:

  • 纪常伟

    [Ji, Changwei]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Lab New Energy Vehicles, Beijing 100124, Peoples R China

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来源 :

FIRE TECHNOLOGY

ISSN: 0015-2684

年份: 2020

期: 6

卷: 56

页码: 2525-2544

3 . 4 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:169

被引次数:

WoS核心集被引频次: 14

SCOPUS被引频次: 14

ESI高被引论文在榜: 0 展开所有

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