新能源乘用车动力电池总成振动耐久性试验方法研究  

Investigation on Vibration Durability Testing Method of Power Battery Assembly of New Energy Passenger Car

作　　者：梁荣亮 李旭东 康大为 周明岳 詹永骁 Liang Rongliang;Li Xudong;Kang Dawei;Zhou Mingyue;Zhan Yongxiao(Tianjin University,Tianjin 300072;CATARC Automotive Test Center(Tianjin)Co.,Ltd.,Tianjin 300300;Deepal Automotive Technology Co.,Ltd.,Chongqing 400020)

机构地区：[1]天津大学,天津300072 [2]中汽研汽车检验中心(天津)有限公司,天津300300 [3]深蓝汽车科技有限公司,重庆400020

出　　处：《汽车工程师》2025年第1期10-19,共10页Automotive Engineer

基　　金：政府间国际科技创新合作项目(2022YFE0103100);广西科技重大专项项目(2023AA06007);中汽研天津检验中心共性基础技术研究项目(TJKY2224007)。

摘　　要：为在乘用车动力电池总成振动耐久性验证试验中准确复现其在真实使用环境中所承受的机械振动,针对试验台架的选择问题,开展了试验研究和系统分析论证,证明了动力电池总成所承受的机械振动主要来源于路面激励,经悬架传递至动力电池总成的机械振动主要在垂向累积形成伪损伤,且主要由5 Hz以下的低频信号累积形成,并通过虚拟相干自功率谱分析证明了动力电池总成所承受的机械振动来自多个独立的激振源,是典型的多轴振动问题。研究结果表明,应采用六自由度多轴模拟振动台架开展乘用车动力电池总成振动耐久性试验。Focusing on the question of which test rig should be selected in vibration durability test of power battery assembly of passenger car to accurately reproduce the mechanical vibration it borne in real environment,experimental research and systematic analysis and demonstration are carried out.It is proved that the mechanical vibration borne by power battery assembly mainly came from road excitation and the mechanical vibration transmitted to power battery assembly through suspensions mainly resulted in vertical pseudo damage,which is mainly accumulated by low-frequency signals below 5 Hz.Through the analysis of virtual coherent auto-power,it is proved that the mechanical vibration of power battery assembly came from multiple independent excitation sources,which is a typical multiaxial vibration problem.Finally,it is concluded that the 6 DOF vibration test bench should be used to carry out the vibration durability test of power battery assembly of passenger car.

关 键 词：动力电池总成 机械振动 试验方法 伪损伤 多轴振动 

分 类 号：U467.5[机械工程—车辆工程]