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The diagnosis of power battery faults is crucial for the normal operation of electric vehicles. In response, this paper proposes a power battery fault diagnosis method using local mean decomposition and the local outlier factor, aimed at fault recognition and localization within battery packs. Firstly, the voltage signal is preprocessed through local mean decomposition, followed by the reconstruction of the voltage signal according to the correlation coefficient. Furthermore, the kurtosis factor of the reconstructed signal is extracted as the fault feature input to the local outlier factor algorithm, which then identifies the faulty battery based on an adaptive threshold. Finally, the proposed method is validated on a real vehicle, effectively and accurately detecting faults while demonstrating the reliability and robustness of the method.
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动力电池故障诊断是保证电动汽车正常运行的关键。提出一种基于局部均值分解和局部离群因子的动力电池故障诊断方法,用于电池组故障识别与定位。通过局部均值分解对电压信号预处理,并根据相关系数高低重构电压信号。进一步提取重构信号的峭度因子作为故障特征输入到局部离群因子算法中,根据局部离群因子算法自适应阈值输出故障电池。采用实车数据验证了所提方法能有效、准确地检测出故障,具有较好的可靠性与鲁棒性。
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胡杰(1984-),男,湖南永州人,博士,教授,主要研究方向为车联网与大数据、智能云诊断。Tel:13071237418 E-mail:
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, authorsList=胡杰, 贾超明, 程雅钰, 余海)}, authors=[Author(id=1153978791408947635, tenantId=1146029695717560320, journalId=1152916057816748034, articleId=1153978733221368420, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=auto_hj@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1153978791509610935, tenantId=1146029695717560320, journalId=1152916057816748034, articleId=1153978733221368420, authorId=1153978791408947635, language=EN, stringName=Jie HU, firstName=Jie, middleName=null, lastName=HU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 Hubei Key Laboratory of Modern Auto Parts Technology Wuhan University of Technology Wuhan 430070 China
2 Auto Parts Technology Hubei Collaborative Innovation Center Wuhan University of Technology Wuhan 430070 China
3 Hubei Technology Research Center of New Energy and Intelligent Connected Vehicle Engineering Wuhan 430070 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1153978791597691320, tenantId=1146029695717560320, journalId=1152916057816748034, articleId=1153978733221368420, authorId=1153978791408947635, language=CN, stringName=胡杰, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 武汉理工大学 现代汽车零部件技术湖北省重点实验室 武汉 430070
2 武汉理工大学 汽车零部件技术湖北省协同创新中心 武汉 430070
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1 Hubei Key Laboratory of Modern Auto Parts Technology Wuhan University of Technology Wuhan 430070 China
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1 武汉理工大学 现代汽车零部件技术湖北省重点实验室 武汉 430070
2 武汉理工大学 汽车零部件技术湖北省协同创新中心 武汉 430070
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贾超明(1998-),男,四川巴中人,硕士研究生,主要研究方向为车联网与大数据。Tel:18040464233 E-mail:xy052298@126.com
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贾超明(1998-),男,四川巴中人,硕士研究生,主要研究方向为车联网与大数据。Tel:18040464233 E-mail:xy052298@126.com
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1 Hubei Key Laboratory of Modern Auto Parts Technology Wuhan University of Technology Wuhan 430070 China
2 Auto Parts Technology Hubei Collaborative Innovation Center Wuhan University of Technology Wuhan 430070 China
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1 武汉理工大学 现代汽车零部件技术湖北省重点实验室 武汉 430070
2 武汉理工大学 汽车零部件技术湖北省协同创新中心 武汉 430070
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1 Hubei Key Laboratory of Modern Auto Parts Technology Wuhan University of Technology Wuhan 430070 China
2 Auto Parts Technology Hubei Collaborative Innovation Center Wuhan University of Technology Wuhan 430070 China
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2 武汉理工大学 汽车零部件技术湖北省协同创新中心 武汉 430070
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