摘要
电池管理器控制着动力电池充放电过程,其上的铜导体与环氧树脂进行连接形成塑封,湿汽进入塑封器件后会造成湿膨胀应力和蒸汽应力,对电池可靠性造成很大影响。创新性地利用厚壁圆球模型分析了试验件上环氧树脂内空洞中可能产生的最大蒸汽应力及湿热共同作用时的合应力,并与用有限元方法计算蒸汽应力及湿热合应力结果进行了对比。通过对比发现使用厚壁圆球模型分析环氧树脂等吸湿材料内部的蒸汽应力值和预测器件危险位置处空洞内壁在湿热环境下受到的最大合应力更为合理。
The battery manager controls the charging and discharging process of the power battery.The cop-per conductor on it is connected with the epoxy resin to form a plastic seal.After the wet steam enters the plastic seal device,it will cause the moisture expansion stress and steam stress,which will greatly affect the reliability of the battery.The maximum steam stress and the combined stress of moisture and heat in the cav-ity in the epoxy resin on the test piece were analyzed innovatively by using the thick-walled spherical mod-el,and the results were compared with those calculated by the finite element method.Through comparison,it is found that it is more reasonable to use the thick-walled sphere model to analyze the vapor stress value inside the hygroscopic materials such as epoxy resin and predict the maximum combined stress on the inner wall of the cavity at the dangerous position of the device in the humid and hot environment.
作者
卢欣欣
陈继永
史兴华
LU Xin-xin;CHEN Ji-yong;SHI Xing-hua(School of Aviation and Transportation Engineering,Jiangsu Engineering Vocational and Technical College,Nantong 226000,Jiangsu,China;Jiangsu Research and Development Center for Intelligent Connected Vehicle Engineering,Nantong 226000,Jiangsu,China;Xi'an Aviation Brake Technology Co.,Ltd.,Xi'an 710065,Shaanxi,China)
出处
《合成纤维》
CAS
2025年第1期52-56,共5页
Synthetic Fiber in China
基金
南通市基础科学研究青年创新项目(JC12022090)
南通市科研项目(JC22022034/JCZ2022061)
江苏工程职业技术学院科研项目(GYKY/2022/14)
江苏工院2021年高水平产教融合平台项目。
关键词
电池
环氧树脂
湿热环境
厚壁圆球模型
应力
battery
epoxy resin
humid and hot environment
thick-walled spherical model
stress
