车用动力电池不一致性故障诊断与预测方法研究

打开文本图片集

关键词：专用汽车；动力电池；不一致性；故障诊断；寿命预测中图分类号：U472.9 收稿日期：2025-05-20 DOI：10.19999/j.cnki.1004-0226.2025.11.017

Research on Diagnosis and Prediction Methods of Inconsistent Faults in Automotive Power Batteries

Li XiHou Wenna Wang Zetong Wang Qiuxia Zhao Weiyi Xi'anAutomobile Vocational University，Xi'an 7106oo，China

Abstract：Inorder toenhancetheoperational safetyand maintenanceeficiencyofautomotivepower bateriesundercomplex workingconditions，thepaperconducts in-depthanalysisoncommon inconsistencyissuesduringbaterypackoperation，costructsa faultdiagnosismodelntegatingmultisoucedata，andemploysmachineleaingalgoritstoidntifydeviationcharacteristicsofprameterssuchasSOC，voltage，ndtemperature.Anddesignapredictionframework basedontimeseriestomodelthetrendofinconsistencydegradation.Experimentalverificationwasconductedbyselectingtypicaloperatingconditionsofspecialvehicles.Theresults showthattheproposedmethodhasobviousadvantages intermsofdiagnosticaccuracyandpredictionstability.Theresearchesultscan provideteoreticalsupportandengineeringguidancfortehalthmanagementandlifeextensioofbaterysystemsinspecpurpose vehicles.

KeyWords：Special-purpose vehicle;Powerbattery;Inconsistency;Fault diagnosis;Life prediction

1前言

动力电池作为专用汽车电动化发展的核心部件，其一致性水平直接关系到整车系统的运行效率与安全性能。（剩余5173字）