铆钉电触头接触温升与接触电阻特性研究  

Research on Temperature Rise and Contact Resistance of Rivets Contacts

作　　者：任万滨[1] 支宏旭[1] 付颖华 吕超[3] 翟国富[1] 

机构地区：[1]哈尔滨工业大学军用电器研究所,黑龙江哈尔滨150001 [2]桂林航天电子有限公司,广西桂林541002 [3]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电器与能效管理技术》2015年第4期7-11,26,共6页Electrical & Energy Management Technology

基　　金：国家自然科学基金(51007010;51377029)

摘　　要：铆钉触头材料的接触温升与接触电阻直接关系到电气连接的可靠性。通过设计触头材料电接触试验系统,实现了球-平面电接触对接触温升与接触电阻的测量方法,从而研究了接触压力和电流对于稳定温升和热时间常数的影响。为获得接触斑点的发热状态,应用COMSOL Multiphysics有限元软件建立了包含触头对、触头夹具及热电偶的多物理场耦合仿真分析模型,根据试验环境确定了仿真边界条件,进而分析了膜电阻、接触压力和电流对于斑点稳定温升的影响。The contact resistance and contact temperature of the rivets contact materials are directly related to the reliability of electrical connections. An experimental system of contact material was designed to get data of contact resistance and contact temperature in electrical contacts between plane and spherical, thus to make experimental study of the stable temperature rise and thermal time constant resulted from contact pressure and current effects. To obtain the super temperature of spot-a, this paper developed a multi-physics coupling simulation model applying COMSOL Multiphysics finite element software, which contains electric contacts, the fixtures of contacts and thermocouple. Based on experimental environment, the boundary conditions of the simulation model were determined. Followed by, the effects of film resistance, contact pressure and the current on the temperature of spot-a were analyzed.

关 键 词：电接触 电触头 接触温升 接触电阻 有限元仿真 

分 类 号：TM503.5[电气工程—电器]