The degradation of road tested automotive connectors

Electrical Contacts - 1999. Proceedings of the Forty-Fifth IEEE Holm Conference on Electrical Contacts (Cat. No.99CB36343) Pub Date : 1900-01-01 DOI:10.1109/6144.833055

Johnathan Swingler, J. McBride, C. Maul

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引用次数: 89

Abstract

The increasing amount of telematic and other electronic systems in the modern motor vehicle demands high performance and reliability in ever decreasing space. The automotive connector is well known to be the weak link in electronic systems due to the multi-environmental conditions seen in the motor vehicle. These conditions of large temperature changes, high humidity, and corrosive atmospheres have significant and varied affect upon the connector. Sample signal and power automotive connectors which are currently undergoing road testing, are being monitored to evaluate stress levels during real operation. Environmental conditions such as, temperature, humidity and vibration levels of these connectors are being monitored in situ. Connector temperature data from vehicles operated in the United Kingdom is presented in this paper. An empirical model is also presented demonstrating some of the general features of connector temperature behaviour. Scanning electron micrographs, elemental analysis and contact resistance measurements are also taken to determine the level of degradation of these connectors. Evidence of fretting corrosion was found at the contact interface on tin plated terminals from sealed and unsealed connectors; however gold terminals exhibited minimal wear.

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道路测试汽车连接器的退化

现代机动车辆中越来越多的远程信息处理和其他电子系统要求在不断缩小的空间中具有高性能和可靠性。众所周知，汽车连接器是电子系统中的薄弱环节，因为汽车中存在多种环境条件。这些温度变化大、湿度高、腐蚀性强的环境对连接器的影响很大。目前正在进行道路测试的样本信号和电源汽车连接器正在接受监测，以评估实际运行中的应力水平。这些连接器的温度、湿度和振动水平等环境条件正在现场监测。本文介绍了在英国运行的车辆的连接器温度数据。还提出了一个经验模型，展示了连接器温度行为的一些一般特征。扫描电子显微图，元素分析和接触电阻测量也采取了确定这些连接器的退化程度。在密封和非密封连接器的镀锡端子的接触界面上发现了微动腐蚀的证据;而金端子磨损最小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Electrical Contacts - 1999. Proceedings of the Forty-Fifth IEEE Holm Conference on Electrical Contacts (Cat. No.99CB36343)

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