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首页> 外文期刊>Journal of Cleaner Production >A coupled electrochemical-mechanical performance evaluation for safety design of lithium-ion batteries in electric vehicles: An integrated cell and system level approach
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A coupled electrochemical-mechanical performance evaluation for safety design of lithium-ion batteries in electric vehicles: An integrated cell and system level approach

机译：电动汽车锂离子电池安全设计耦合电化学 - 机械性能评价：集成电池和系统水平方法

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摘要

The studies on an integrated approach for the battery (cell level), battery pack (system level) and battery pack enclosure (system level) are nascent till date. The present work proposes a combined approach for studying the coupled electrochemical-mechanical performance of the battery (cell level), battery pack and enclosure (system level). In this context, five research problems are undertaken involving the design parameters for the performance evaluation of batteries. The first issue undertaken is battery performance under stress conditions and for that varying initial stress and real-time stresses were applied, and variation in the capacity of the battery packs was studied. Initial stress was found to be in negative relation with the battery capacity. For understanding the mechanical damage (leakage, deformation, etc.), characterization of the battery cell under impact loading was done by subjecting battery cells to different impact loads and impact analysis was done using six statistical features extracted from the impact force processed signal of each test, namely: peak value, mean value, variance, skewness, kurtosis and pulse width. The third issue regards the manufacturing defects in the cell, which can potentially lead to inconsistency of cells performance in a pack and thus lower its total cycle life. Support vector classification clustering methods were applied to form a battery pack with similar performing cells and performance of the pack was compared with industrial packs in which earlier one was found to be better. The fourth research challenge involved the mechanical performance parameters such as strength, deformation, and natural frequency, which, in addition to temperature, are also critical to battery pack safety in the event of impact and vibrations under driving conditions. ANSIS and NSGA-II based approaches were used to optimize the battery design and resultant device shown maximum deformation reduced by 22.2%, the value of minimum inherent frequency improved by 3.2% and the value of mass decreased by 11.6%. The fifth research problem highlighted how, due to the enormous production of electric vehicles, by 2020, there will be 250,000 tons of batteries that need to be recycled. A combined experimental-numerical framework has been thereby suggested to mitigate it. The study resulted in the formation of an online monitoring system and safety design of batteries at both cell and system level (pack and enclosure). (C) 2019 Elsevier Ltd. All rights reserved.
机译：对电池（电池级），电池组（系统级）和电池组（系统级）的集成方法的研究是新生的直到日期。本工作提出了一种用于研究电池（电池级），电池组和外壳（系统级）的耦合电化学 - 力学性能的组合方法。在这方面，进行了五项研究问题，涉及用于电池性能评估的设计参数。开展的第一个问题是压力条件下的电池性能，并且对于应用不同的初始应力和实时应力，研究了电池组容量的变化。发现初始压力与电池容量有负面关系。为了理解机械损坏（泄漏，变形等），通过对电池单元进行冲击载荷的电池单元的表征通过对不同的冲击载荷进行，并使用从每个冲击力处理信号提取的六个统计特征进行冲击分析测试，即：峰值，平均值，方差，偏振，峰氏和脉冲宽度。第三个问题关于细胞中的制造缺陷，其可能导致细胞在包装中的性能不一致，从而降低其总循环寿命。支持向量分类集群方法被应用于形成具有类似的电池组的电池组，并且将包装的性能与产品包相比，其中发现更好的工业包更好。第四次研究挑战涉及力强，变形和固有频率的机械性能参数，除了温度之外，在驾驶条件下的冲击和振动的情况下也对电池组安全性也至关重要。基于ANSIS和NSGA-II的方法用于优化电池设计和所示装置所示的最大变形减少22.2％，最小固有频率的值提高了3.2％，质量值降低了11.6％。第五研究问题突出了如何，由于电动汽车的巨大生产，到2020年，将有25万吨电池需要回收。从而提出了一种组合的实验 - 数值框架来减轻它。该研究导致在电池和系统级（包装和机箱）的电池中的在线监测系统和安全设计。 （c）2019 Elsevier Ltd.保留所有权利。

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  • 来源
    《Journal of Cleaner Production》 |2019年第10期|633-645|共13页
  • 作者

    Niu Xiaodong; Garg Akhil; Goyal Ankit; Simeone Alessandro; Bao Nengsheng; Zhang Jian; Peng Xiongbin;

  • 作者单位

    Shantou Univ Minist Educ Intelligent Mfg Key Lab Shantou 515063 Peoples R China|Shantou Univ Dept Mechatron Engn Shantou 515063 Peoples R China;

    Shantou Univ Minist Educ Intelligent Mfg Key Lab Shantou 515063 Peoples R China;

    Shantou Univ Minist Educ Intelligent Mfg Key Lab Shantou 515063 Peoples R China;

    Shantou Univ Minist Educ Intelligent Mfg Key Lab Shantou 515063 Peoples R China;

    Shantou Univ Minist Educ Intelligent Mfg Key Lab Shantou 515063 Peoples R China|Shantou Univ Dept Mechatron Engn Shantou 515063 Peoples R China;

    Shantou Univ Minist Educ Intelligent Mfg Key Lab Shantou 515063 Peoples R China;

    Shantou Univ Minist Educ Intelligent Mfg Key Lab Shantou 515063 Peoples R China|Shantou Univ Dept Mechatron Engn Shantou 515063 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lithium-ion batteries; Recycling; Mechanical-electrochemical performance; Safety design; Battery pack;

    机译：锂离子电池;回收;机械电化学性能;安全设计;电池组;

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