Article(id=1200070551826957086, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200070543870357634, articleNumber=null, orderNo=null, doi=10.20104/j.cnki.1674-6546.20230386, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=1702137600000, revisedDateStr=2023-12-10, acceptedDate=null, acceptedDateStr=null, onlineDate=1764048715787, onlineDateStr=2025-11-25, pubDate=1710432000000, pubDateStr=2024-03-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764048715787, onlineIssueDateStr=2025-11-25, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764048715787, creator=13701087609, updateTime=1764048715787, updator=13701087609, issue=Issue{id=1200070543870357634, tenantId=1146029695717560320, journalId=1189918454225211397, year='2024', volume='', issue='3', pageStart='1', pageEnd='48', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764048713891, creator=13701087609, updateTime=1764049195679, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200072564690219870, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200070543870357634, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200072564690219871, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200070543870357634, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=28, endPage=34, ext={EN=ArticleExt(id=1200070552217027401, articleId=1200070551826957086, tenantId=1146029695717560320, journalId=1189918454225211397, language=EN, title=State-of-Charge Estimation of Electric Vehicle Lithium Battery Based on Mixed Kalman Particle Filter, columnId=null, journalTitle=Automotive Engineer, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In the state-of-charge estimation of power battery, the traditional Extended Kalman Filter (EKF) ignores high-order terms and Particle Filter (PF) suffers from particle degradation and loss of diversity during the resampling process. To address this issue, this paper proposed the improved Mixed Kalman Particle Filter (MKPF) algorithm. Firstly, the extended Kalman filter was used to generate the state estimate of the system, and then the unscented Kalman filter was used to repeat the process. The state estimates obtained by the extended Kalman filter and the unscented Kalman filter were used together as the particle filter proposal distribution, and value sorting was used to determine the survival of the fittest particles. Simulation and experimental results show that the maximum error of SOC estimate by the proposed algorithm is 1.2%, which is better than the estimation accuracy of the existing PF, EKF, and UKF algorithms on SOC.
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针对动力电池荷电状态(SOC)估计中,传统扩展卡尔曼滤波(EKF)忽略高阶项、粒子滤波(PF)存在重采样过程中的粒子退化与多样性丧失的问题,提出了改进的混合卡尔曼粒子滤波(MKPF)算法。首先采用扩展卡尔曼滤波产生系统的状态估计,然后使用无迹卡尔曼滤波器重复这一过程,将扩展卡尔曼滤波和无迹卡尔曼滤波获得的状态估计共同作为粒子滤波建议分布,并通过权值排序进行粒子优胜劣汰。仿真和试验结果表明,所提出算法的SOC估算最大误差为1.2%,优于PF、EKF、UKF算法的SOC估算精度。
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| 参数 | 试验需求 |
| 开路电压UOC | 充满电后间歇放电与搁置测量 |
| 欧姆内阻R0 | 间歇放电过程中的混合功率 脉冲特性(HPPC)测试 |
| 极化电阻Rp |
| 极化电容Cp |
| 放电内阻Rd | 脉冲放电过程结合欧姆内阻值求取 |
| 充电内阻Rc |
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等效模型参数辨识试验需求
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| 参数 | 试验需求 |
| 开路电压UOC | 充满电后间歇放电与搁置测量 |
| 欧姆内阻R0 | 间歇放电过程中的混合功率 脉冲特性(HPPC)测试 |
| 极化电阻Rp |
| 极化电容Cp |
| 放电内阻Rd | 脉冲放电过程结合欧姆内阻值求取 |
| 充电内阻Rc |
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| SSOC/% | R0/Ω | R2/Ω | R1/Ω | C2/F | C1/F |
| 100 | 0.039 7 | 0.012 9 | 0.093 4 | 47.3 | 491.1 |
| 90 | 0.037 0 | 0.007 1 | 0.031 3 | 93.2 | 720.7 |
| 80 | 0.034 9 | 0.005 7 | 0.017 7 | 107.5 | 1 153.5 |
| 70 | 0.033 7 | 0.005 2 | 0.015 4 | 113.7 | 937.4 |
| 60 | 0.033 3 | 0.004 9 | 0.014 4 | 118.0 | 720.1 |
| 50 | 0.033 2 | 0.004 9 | 0.016 0 | 120.1 | 834.2 |
| 40 | 0.033 1 | 0.005 4 | 0.021 3 | 119.8 | 1 008.0 |
| 30 | 0.033 1 | 0.005 9 | 0.027 6 | 118.8 | 875.6 |
| 20 | 0.033 5 | 0.006 1 | 0.028 8 | 116.7 | 562.5 |
| 10 | 0.034 4 | 0.006 5 | 0.022 9 | 104.0 | 617.9 |
| 0 | 0.035 3 | 0.009 8 | 0.025 4 | 48.4 | 571.1 |
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模型参数辨识结果
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| SSOC/% | R0/Ω | R2/Ω | R1/Ω | C2/F | C1/F |
| 100 | 0.039 7 | 0.012 9 | 0.093 4 | 47.3 | 491.1 |
| 90 | 0.037 0 | 0.007 1 | 0.031 3 | 93.2 | 720.7 |
| 80 | 0.034 9 | 0.005 7 | 0.017 7 | 107.5 | 1 153.5 |
| 70 | 0.033 7 | 0.005 2 | 0.015 4 | 113.7 | 937.4 |
| 60 | 0.033 3 | 0.004 9 | 0.014 4 | 118.0 | 720.1 |
| 50 | 0.033 2 | 0.004 9 | 0.016 0 | 120.1 | 834.2 |
| 40 | 0.033 1 | 0.005 4 | 0.021 3 | 119.8 | 1 008.0 |
| 30 | 0.033 1 | 0.005 9 | 0.027 6 | 118.8 | 875.6 |
| 20 | 0.033 5 | 0.006 1 | 0.028 8 | 116.7 | 562.5 |
| 10 | 0.034 4 | 0.006 5 | 0.022 9 | 104.0 | 617.9 |
| 0 | 0.035 3 | 0.009 8 | 0.025 4 | 48.4 | 571.1 |
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| 参数 | 数值 |
| 额定容量/mA·h | 2 500 |
| 额定电压/V | 3.6 |
| 充电截止电压/V | 4.2 |
| 放电截止电压/V | 2.5 |
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电池主要参数
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| 参数 | 数值 |
| 额定容量/mA·h | 2 500 |
| 额定电压/V | 3.6 |
| 充电截止电压/V | 4.2 |
| 放电截止电压/V | 2.5 |
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