小型继电器触点粘接失效现象的复现与失效机理  

Reoccurrence of Contact Welding Failure Phenomenon and Failure Mechanism of Miniature Relay

作　　者：张旭 郑哲 罗福彪 周哲峰 任万滨[1] ZHANG Xu;ZHENG Zhe;LUO Fubiao;ZHOU Zhefeng;REN Wanbin(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China;G&A Electronics Co.,Ltd.,Guilin 541002,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001 [2]桂林航天电子有限公司,广西桂林541002

出　　处：《电器与能效管理技术》2021年第10期52-56,共5页Electrical & Energy Management Technology

基　　金：国家自然科学基金项目(51777039)。

摘　　要：小型继电器的触点粘接失效是制约其长寿命、高可靠发展的关键问题。通过实验装置,实现了小型继电器的触点分/合电性能模拟,通过分析燃弧时间、分断时间、接触电阻、回跳能量参数随动作次数的变化规律,发现了触点粘接失效前的敏感参数退化特征,获得了触点粘接失效后的微观形貌特征。最后,提出了触点粘接失效的机理。Contact welding failure extremely limits the development trend of miniature relay with long life and high reliability.A special designed test rig is used for the simulation of the electrical performance of contact break and make behavior according to the operation features of miniature relay.The variation in sensitive parameters,including arcing duration,breakaway time,contact resistance and bounce energy,as a function of operation cycles it presented.The precursors of contact welding failure phenomenon are determined.The eroded surface morphologies of failed contacts are obtained.Finally,the contact welding failure mechanism of miniature relay is presented.

关 键 词：小型继电器 电接触 触点熔焊 分断时间 失效机理 

分 类 号：TM581[电气工程—电器]