高压大线径绞合方式及端子压接焊接对温升的影响

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中图分类号：U463.62 文献标识码：A 文章编号：1003-8639（2026）02-0123-03

The Influence of High-voltage Large-diameter Stranding Methods and Terminal Crimping and Welding on Temperature Rise

ChenJie,WangShengli,MaHuijuan,LiJianfeng,Liu Zhenchao,ZhangXianjun (R&D Centerof Wire HarnessNew Energy Division, Henan Tianhai Electrical Appliance Co,Ltd.,Hebi 45803o,China)

【Abstract】This paper introduces the crimping and welding methods of high-voltage large square wire diameter terminals,analyzes the influence of copper wire twisting methods onthe temperature rise of wire harnesses and the subsequent improvement measures,discusses the risk factors for excessive temperature rise of terminals,compares theadvantages and disadvantages of welding and crimping processes,provides technical support forthe subsequent development of molds and jaws,and ultimately ensures that the product quality meets the usage requirements.

【Key words】high voltage large square wire diameter; copper wire twisting method;terminal temperature rise；ultrasonic welding

0 引言

新能源汽车高压线束通常采用单芯导线，其中大平方线径导线广泛应用于能量传输场景，如三相电机线、发电机控制器线束、快充线束等部位。（剩余3880字）