新型电子电气架构下的汽车车身接地点串流分析及优化  

Analysis and Optimization of Vehicle Ground Drift Current Under New Electrical Architecture

作　　者：魏志成 王东升[1] 杨国樑 孟春江 丰彦东 谭金超 WEI Zhicheng;WANG Dongsheng;YANG Guoliang;MENG Chunjiang;FENG Yandong;TAN Jinchao(China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300301,China)

机构地区：[1]中国汽车技术研究中心有限公司,天津300301

出　　处：《电工技术》2024年第10期187-190,共4页Electric Engineering

摘　　要：对汽车接地点基础原理和类型进行简要介绍,同时对接地电流分布、串流原理及串流路径进行深入研究分析。结合实际实验,在某新型2.0架构平台下的汽车电气系统模拟接地闭合和断开的环境,通过IPE的数据采集设备对电流进行精确监控,提出了一种线束安全的判定方法。根据电流的串流路径分析发现有风险的线束,判断功能是否符合设计要求,针对串流导致的潜在风险提出了优化方案并进行整改。整改方法包括改变和拆分接地点、加粗串流接地线等。整改后再次模拟接地点断开环境进行实验,结果表明整改后该接地点能稳定、安全、有效地保证2.0架构平台正常运行。This paper briefly introduces the basic principles and types of vehicle grounding,and conducts in-depth investigation and analysis on the distribution of ground current,the principle of drift current,and the path of drift current.Combined with practical tests,the vehicle electrical system under a new 2.0 architecture platform simulates the environment of ground closing and breaking,and accurately monitors the current through IPE equipment,and furthermore,a method for determining the safety of wire harnesses is proposed.Based on analyzing drift current path,it is found that the harness with risks meets the design requirements.The potential risks caused by the drift current are optimized and rectified by means of changing and disassembling the ground point,and thickening the drift current ground wire.Post-rectification re-simulation on the grounding disconnection environment shows that the rectification achieves stable and safe grounding,and effectively ensures the functional operation of the 2.0 architecture platform.

关 键 词：车身接地 接地原理 接地串流 接地优化 

分 类 号：U462.2[机械工程—车辆工程]