摘要
文章提出针对新能源实验室多设备协同测试系统性电磁兼容(EMC)设计优化方案,通过梳理实验室设备的种类及EMC特性,识别共模(CM)/差模(DM)干扰源及传播路径,并搭建典型测试场景,采用频谱分析仪与近场探头定位干扰源,量化评估传导干扰与辐射发射水平。优化措施包括:扩展高压与敏感设备间距、升级控制器局域网(CAN)总线抗干扰能力、梳理接地方式等。整改后实验室通信错误帧率降低,设备故障率、传导CM干扰幅值下降,形成标准化EMC设计流程,涵盖布局规划、线束选型及测试验证。该研究为新能源动力总成、电池及热管理实验室提供可复用的EMC设计方法,提升测试效率,助力新能源汽车产业链可靠性升级。
This study proposes a systematic electromagnetic compatibility(EMC)design optimization methodology for multi-device collaborative testing in new energy laboratories.By categorizing laboratory equipment types and their EMC characteristics,the research identifies common-mode(CM)/differential-mode(DM)interference sources and propagation paths,establishes typical test setups,and utilizes spectrum analyzers with near-field probes to locate interference sources.Quantitative assessments of conducted interference and radiated emissions are conducted.Key improvements include:increasing the spacing between high-voltage and sensitive equipment,upgrading controller area network(CAN)bus anti-interference capabilities,and standardizing grounding methods.Post-optimization improvements demonstrate reduced communication error frame rates,lower equipment failure rates,and decreased conducted CM interference amplitudes.The study establishes a standardized EMC design workflow encompassing layout planning,harness selection,and validation testing.This methodology provides a replicable framework for EMC design in new energy powertrain,battery,and thermal management laboratories,enhancing testing efficiency and supporting reliability advancements in the new energy vehicle industry chain.
作者
张博
王曼曼
袁晨
夏瑜
ZHANG Bo;WANG Manman;YUAN Chen;XIA Yu(Technology Center,Shaanxi Automobile Group Company Limited,Xi'an 710200,China)
出处
《汽车实用技术》
2025年第18期31-35,共5页
Automobile Applied Technology
关键词
新能源汽车测试
电磁兼容优化
三电系统测试
实验室设计
new energy vehicle testing
electromagnetic compatibility optimization
three-electric system testing
laboratory design
