Article(id=1153756967374934138, tenantId=1146029695717560320, journalId=1152916057816748034, issueId=1153756963994329869, articleNumber=null, orderNo=null, doi=10.3969/j.issn.2095‒1469.2025.02.03, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1710086400000, receivedDateStr=2024-03-11, revisedDate=1713456000000, revisedDateStr=2024-04-19, acceptedDate=null, acceptedDateStr=null, onlineDate=1753006696789, onlineDateStr=2025-07-20, pubDate=1742400000000, pubDateStr=2025-03-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753006696789, onlineIssueDateStr=2025-07-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753006696789, creator=13701087609, updateTime=1753006696789, updator=13701087609, issue=Issue{id=1153756963994329869, tenantId=1146029695717560320, journalId=1152916057816748034, year='2025', volume='15', issue='2', pageStart='125', pageEnd='262', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1753006695984, creator=13701087609, updateTime=1757654146268, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1173249783352410923, tenantId=1146029695717560320, journalId=1152916057816748034, issueId=1153756963994329869, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1173249783352410924, tenantId=1146029695717560320, journalId=1152916057816748034, issueId=1153756963994329869, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=147, endPage=154, ext={EN=ArticleExt(id=1153756967936970877, articleId=1153756967374934138, tenantId=1146029695717560320, journalId=1152916057816748034, language=EN, title=Adaptive Particle Swarm Optimization-Support Vector Machine for Self-Discharge Diagnosis of Lithium-Ion Batteries, columnId=1153756965466530584, journalTitle=Chinese Journal of Automotive Engineering, columnName=Green and Low-Carbon Technologies Section, runingTitle=null, highlight=null, articleAbstract=
Lithium-ion power batteries are currently the most widely used energy storage devices in electric vehicles. Rapid and accurate battery fault diagnosis is crucial for ensuring safe vehicle operation. This paper proposes a method for diagnosing self-discharge faults in power batteries based on adaptive voltage thresholds for individual cells and Particle Swarm Optimization-Support Vector Machine (PSO-SVM). This study focuses on the voltage signals of power batteries, and combines the boxplot method with expert review to label self-discharge fault samples. A sliding window method is used to extract 16 features from both the time and frequency domains. To further reduce the dimensionality of voltage features, principal component analysis is applied, selecting the top five principal components with a 95% cumulative variance contribution as inputs for the PSO-SVM model. This method aims to improve the accuracy of self-discharge fault detection in batteries. The results show that the proposed method achieves high detection accuracy, strong reliability, and promising potential for practical applications in electric vehicles. Additionally, it provides theoretical support for enhancing the safety performance of electric vehicles.
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提出了一种基于单体电池自适应电压阈值和粒子群优化-支持向量机(PSO-SVM)的动力电池自放电故障诊断方法。主要关注动力电池电压信号,结合箱型图法和专家审核,完成自放电故障的样本标记,再通过滑动窗口法提取时域和频域上的16种特征,使用主成分分析法对电压特征进一步降维,得到累计方差贡献度为95%的前5项主成分作为PSO-SVM模型的输入。该方法旨在提高电池自放电故障的识别精度,最终结果表明,提出的方法具有较高的识别准确率,可靠性强,在实际的电动汽车应用场景中有一定的前景和价值,可为电动汽车安全性能的提升提供理论支撑。
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1 School of Big Data and Software Engineering,Chongqing University Chongqing 400044,China
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1 重庆大学 大数据与软件学院,重庆 400044
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刘成豪(1996-),男,重庆永川人,博士,工程师,主要研究方向为新能源汽车大数据安全预警。 E-mail:liuchenghao@caeri.com.cn
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刘成豪(1996-),男,重庆永川人,博士,工程师,主要研究方向为新能源汽车大数据安全预警。 E-mail:liuchenghao@caeri.com.cn
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| 模型 | 随机 森林 | Bagging | AdaBoost | 决策树 | 逻辑 回归 | PSO-SVM |
| 准确率 | 92.55 | 80.60 | 93.53 | 91.04 | 72.64 | 98.26 |
), ArticleFig(id=1175545274761097545, tenantId=1146029695717560320, journalId=1152916057816748034, articleId=1153756967374934138, language=CN, label=表1, caption=
机器学习模型的识别准确率
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 随机 森林 | Bagging | AdaBoost | 决策树 | 逻辑 回归 | PSO-SVM |
| 准确率 | 92.55 | 80.60 | 93.53 | 91.04 | 72.64 | 98.26 |
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