Article(id=1149776901675377370, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149776900194791454, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2309072, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1731945600000, receivedDateStr=2024-11-19, revisedDate=1729440000000, revisedDateStr=2024-10-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1752057775181, onlineDateStr=2025-07-09, pubDate=1744905600000, pubDateStr=2025-04-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752057775181, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752057775180, creator=13701087609, updateTime=1752057775180, updator=13701087609, issue=Issue{id=1149776900194791454, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='11', pageStart='4397', pageEnd='4826', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752057774827, creator=13701087609, updateTime=1768456666677, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218558837930512931, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149776900194791454, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218558837930512932, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149776900194791454, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=4598, endPage=4604, ext={EN=ArticleExt(id=1149776901943812828, articleId=1149776901675377370, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Estimation Model for State of Health of Lithium-ion Battery Based on VMD and BiLSTM-ATT, columnId=1156262733675876713, journalTitle=Science Technology and Engineering, columnName=Papers·Electrical Technology, runingTitle=null, highlight=null, articleAbstract=
The estimation of the state of health (SOH) for lithium-ion batteries is considered crucial for ensuring the safe and stable operation of battery management system. However, the accurate estimation of SOH has been a challenge due to the capacity regeneration phenomenon during the discharge process of lithium-ion batteries. To improve estimation accuracy, a hybrid model based on variational mode decomposition (VMD) and bidirectional long short-term memory network with attention mechanism (BiLSTM-ATT) was proposed. First, the battery capacity was decomposed using the VMD algorithm, producing a set of stable sub-sequences. Then, permutation entropy was introduced to reconstruct the sub-sequences to reduce computational complexity. The reconstructed sequences were input into the BiLSTM-ATT model, and feature weights were assigned by the attention mechanism. The SOH values were trained and estimated by the BiLSTM model. Finally, the complete SOH estimation result was obtained by summing all estimated values. Validation was performed using the CS2_36, CS2_38, and CX2_35 datasets from the CALCE lithium battery dataset. The results show that the proposed algorithm maintains a root mean square error within 0.6% and a mean absolute error within 0.4%, which demonstrates higher accuracy and performance compared to other estimation models.
, correspAuthors=Quan-jun WU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Ping-sheng HU, Quan-jun WU), CN=ArticleExt(id=1149776924467225582, articleId=1149776901675377370, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=基于变分模态分解和BiLSTM-ATT的锂电池健康状态估计模型, columnId=1156262734506353627, journalTitle=科学技术与工程, columnName=论文·电工技术, runingTitle=null, highlight=null, articleAbstract=
锂离子电池健康状态(state of health,SOH)估计对于保证锂离子电池管理系统的安全稳定运行至关重要。然而,由于锂离子电池在放电过程中存在容量再生现象,SOH的准确估计一直是一个挑战。为了提高估计精度,提出了一种基于变分模态分解(variational mode decomposition,VMD)和双向长短期记忆网络-注意力机制(bidirectional long short term memory-attention,BiLSTM-ATT)的混合模型估计方法。首先,采用VMD分解算法对锂电池容量进行分解,得到一组相对稳定的子序列。为了降低后续的计算规模,通过引入了排列熵的方法对各个子序列进行重构。然后,将重构后的序列输入到BiLSTM-ATT模型中,利用注意力机制来分配隐藏层的特征权重,并通过双向长短期记忆网络(bidirectional long short term memory, BiLSTM)模型对SOH值进行训练和估计。最后,将所有估计值进行相加得到完整的SOH估计结果。通过在CALCE锂电池数据集上的CS2_36、CS2_38和CX2_35进行验证,实验结果表明所提出算法的均方根误差始终保持在0.6%以内,平均绝对误差始终保持在0.4%以内,相比其他估计模型表现出更高的精度和性能。
, correspAuthors=吴泉军, authorNote=null, correspAuthorsNote=
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, authorsList=胡平生, 吴泉军)}, authors=[Author(id=1218843912366637349, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=hu942658636@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1218843912475689268, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, authorId=1218843912366637349, language=EN, stringName=Ping-sheng HU, firstName=Ping-sheng, middleName=null, lastName=HU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=Smart Energy Mathematics Research Center of College of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 201306, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1218843912584741184, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, authorId=1218843912366637349, language=CN, stringName=胡平生, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=上海电力大学,数理学院智慧能源数学研究中心, 上海 201306, bio={"content":"
胡平生(1996—),男,汉族,安徽合肥人,硕士研究生。研究方向:深度学习、新能源电池的管理系统。E-mail:hu942658636@163.com。
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胡平生(1996—),男,汉族,安徽合肥人,硕士研究生。研究方向:深度学习、新能源电池的管理系统。E-mail:hu942658636@163.com。
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Structure unit of LSTM, figureFileSmall=ciovd1LX0Ss0NLbOuaS+Pg==, figureFileBig=tGNnAW/29So5utqQVaHFSw==, tableContent=null), ArticleFig(id=1218843915009049083, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=图1, caption=
LSTM的结构单元 ft为当前时刻遗忘门的状态;it为当前时刻输入门状态;Ot为t时刻输出门的信息选择程度; 为记忆细胞的历史选择信息;Ct为t时刻的记忆细胞;Ct-1为t-1时刻的记忆细胞;ht-1为前一个输出的隐藏状态;xt当前的输出;W、b分别为相关单元状态的权重和偏置
, figureFileSmall=ciovd1LX0Ss0NLbOuaS+Pg==, figureFileBig=tGNnAW/29So5utqQVaHFSw==, tableContent=null), ArticleFig(id=1218843915168432650, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Fig.2, caption=
BiLSTM network structure, figureFileSmall=j+Zz6VTyp73GznYAnpD0nw==, figureFileBig=e3KSr+j3ZslsFn7gc2Ut7A==, tableContent=null), ArticleFig(id=1218843915323621907, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=图2, caption=
BiLSTM网络结构, figureFileSmall=j+Zz6VTyp73GznYAnpD0nw==, figureFileBig=e3KSr+j3ZslsFn7gc2Ut7A==, tableContent=null), ArticleFig(id=1218843915441062429, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Fig.3, caption=
Attention mechanism structure diagram, figureFileSmall=bTL4/WFBeHeqj1lCcAcS+w==, figureFileBig=wIiYbuAaqKKxkSFbaHRNZw==, tableContent=null), ArticleFig(id=1218843915524948514, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=图3, caption=
注意力机制结构图, figureFileSmall=bTL4/WFBeHeqj1lCcAcS+w==, figureFileBig=wIiYbuAaqKKxkSFbaHRNZw==, tableContent=null), ArticleFig(id=1218843915625611820, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Fig.4, caption=
Battery capacity degradation curve, figureFileSmall=eUayGIsza6tvzYLrNBf/Iw==, figureFileBig=OebRsgJhPKIGbstbS6M2Gg==, tableContent=null), ArticleFig(id=1218843915755635258, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=图4, caption=
电池容量退化曲线, figureFileSmall=eUayGIsza6tvzYLrNBf/Iw==, figureFileBig=OebRsgJhPKIGbstbS6M2Gg==, tableContent=null), ArticleFig(id=1218843915881464387, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Fig.5, caption=
Modal components obtained from VMD decomposition of CS2_36 battery, figureFileSmall=1qHE8PP9US6SqleyBxNHTQ==, figureFileBig=kcDd/oY7tBUZtbjc/gDSeQ==, tableContent=null), ArticleFig(id=1218843916024070732, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=图5, caption=
CS2_36号电池VMD分解得到的模态分量, figureFileSmall=1qHE8PP9US6SqleyBxNHTQ==, figureFileBig=kcDd/oY7tBUZtbjc/gDSeQ==, tableContent=null), ArticleFig(id=1218843916166677077, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Fig.6, caption=
Estimation framework of the VMD-BiLSTM-ATT method, figureFileSmall=gOhuHduayo1LWceuJuNguw==, figureFileBig=bknZCEl092gysF3iapot8Q==, tableContent=null), ArticleFig(id=1218843916284117604, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=图6, caption=
VMD-BiLSTM-ATT方法估计框架, figureFileSmall=gOhuHduayo1LWceuJuNguw==, figureFileBig=bknZCEl092gysF3iapot8Q==, tableContent=null), ArticleFig(id=1218843916435112558, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Fig.7, caption=
Battery state of health estimation results, figureFileSmall=8M0pi+n2m4oya+zstXJDiw==, figureFileBig=ezbuktS4kV6yz77MNa/brA==, tableContent=null), ArticleFig(id=1218843916535775865, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=图7, caption=
电池SOH估计结果, figureFileSmall=8M0pi+n2m4oya+zstXJDiw==, figureFileBig=ezbuktS4kV6yz77MNa/brA==, tableContent=null), ArticleFig(id=1218843916653216384, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Fig.8, caption=
Battery state of health estimation error, figureFileSmall=gxFVw0wHPSXBlv4IgkxN2Q==, figureFileBig=ESvvzPIorAUlbxFF1TwSQA==, tableContent=null), ArticleFig(id=1218843916825182861, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=图8, caption=
电池SOH估计误差, figureFileSmall=gxFVw0wHPSXBlv4IgkxN2Q==, figureFileBig=ESvvzPIorAUlbxFF1TwSQA==, tableContent=null), ArticleFig(id=1218843916925846164, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Table 1, caption=
Normalized permutation entropy values for components of CS2_38 battery
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分量 | IMF1 | IMF2 | IMF3 | IMF4 | IMF5 | IMF6 |
| PE值 | 0.435 | 0.755 | 0.916 | 0.982 | 0.989 | 0.905 |
), ArticleFig(id=1218843917060063904, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=表1, caption=
CS2_38号电池各分量归一化后的排列熵值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分量 | IMF1 | IMF2 | IMF3 | IMF4 | IMF5 | IMF6 |
| PE值 | 0.435 | 0.755 | 0.916 | 0.982 | 0.989 | 0.905 |
), ArticleFig(id=1218843917181698729, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Table 2, caption=
Reconstruction results for components of CS2_38 battery
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序列 | L1 | L2 | L3 | L4 |
| 分量 | IMF1 | IMF2 | IMF3 | IMF4+IMF5+IMF6 |
), ArticleFig(id=1218843917282362035, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=表2, caption=
CS2_38号电池各分量重构结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序列 | L1 | L2 | L3 | L4 |
| 分量 | IMF1 | IMF2 | IMF3 | IMF4+IMF5+IMF6 |
), ArticleFig(id=1218843917408191161, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=EN, label=Table 3, caption=
Comparative results of evaluation metrics for different methods
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | CS2_36 | | CS2_38 | | CX2_35 |
| RMSE | MAE | RMSE | MAE | RMSE | MAE |
| LSTM | 0.026 0 | 0.016 6 | | 0.029 3 | 0.020 0 | | 0.013 3 | 0.008 6 |
| BiLSTM | 0.012 9 | 0.010 3 | | 0.018 8 | 0.014 6 | | 0.010 3 | 0.007 4 |
BiLSTM- ATT | 0.009 3 | 0.006 4 | | 0.011 9 | 0.009 1 | | 0.008 8 | 0.006 8 |
| 本文方法 | 0.005 3 | 0.003 8 | | 0.004 7 | 0.002 7 | | 0.003 6 | 0.002 8 |
), ArticleFig(id=1218843917542408897, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776901675377370, language=CN, label=表3, caption=
不同方法评估指标的对比结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | CS2_36 | | CS2_38 | | CX2_35 |
| RMSE | MAE | RMSE | MAE | RMSE | MAE |
| LSTM | 0.026 0 | 0.016 6 | | 0.029 3 | 0.020 0 | | 0.013 3 | 0.008 6 |
| BiLSTM | 0.012 9 | 0.010 3 | | 0.018 8 | 0.014 6 | | 0.010 3 | 0.007 4 |
BiLSTM- ATT | 0.009 3 | 0.006 4 | | 0.011 9 | 0.009 1 | | 0.008 8 | 0.006 8 |
| 本文方法 | 0.005 3 | 0.003 8 | | 0.004 7 | 0.002 7 | | 0.003 6 | 0.002 8 |
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