车载通信终端防浪涌电路的优化设计  

Design Optimization for Surge Protection Circuit of Automotive Telematics Device

作　　者：常君 叶丹 王寅东 肖剑阁 CHANG Jun;YE Dan;WANG Yindong;XIAO Jiange(Dalian Neusoft Smart Go Co.,Ltd.,Dalian 116085,China)

机构地区：[1]大连东软智行科技有限公司,辽宁大连116085

出　　处：《汽车电器》2024年第7期63-64,共2页Auto Electric Parts

摘　　要：文章针对车载(尤其是新能源汽车)通信终端在使用时出现的偶发浪涌破坏问题,分析浪涌产生的不确定性,通过排查和试验复现失效过程,锁定问题,并提出三级防护的优化解决方案。试验结果表明,该方案能够提高车载通信终端抗扰能力,以达到IEC 61000-4-5试验标准要求,同时也达到实用性目的。Accidental electrical surge may cause damages to automotive telematics devices especially for new energy vehicles.This article investigated and analyzed the uncertainty of electrical surge.By recreating the failure process,we successfully locked the root cause.Furthermore,we have proposed a novel in-circuit three-stage protection scheme to counter this problem.The experimental results have shown that such scheme is able to enhance the electrical surge immunity of telematics devices and hence to meet the IEC 61000-4-5 standard.Additionally,this scheme is also proven to have practical applications.

关 键 词：新能源 电磁兼容 屏蔽 

分 类 号：U463.6[机械工程—车辆工程]