高压动力电池壳体连接结构抗腐蚀性能研究  

Research on Corrosion Performance of Different Connection Structures in HVBG

作　　者：曾祥钱 朱晓怡 覃小攀 姜京男 Zeng Xiangqian;Zhu Xiaoyi;Qin Xiaopan;Jiang Jingnan(SAIC Volkswagen Automotive Co.,Ltd.Shanghai 201805,China)

机构地区：[1]上汽大众汽车有限公司,上海201805

出　　处：《传动技术(中英文)》2024年第4期13-18,共6页Drive System Technique

摘　　要：通过静态腐蚀试验的方法研究了组合套筒、垫片螺栓以及FDS螺栓分别与带电泳镀锌钢板和不锈钢板连接后的抗腐蚀性能,得到了不同组合间的腐蚀性能表现以及残余扭矩的衰减情况。同时,提出对相应紧固件分别实施表面涂蜡、采用流动密封胶Dreibond、增加Tuflok涂层等三种防腐保护处理方法并开展试验分析。试验结果表明,采用带电泳镀锌钢板的连接结构,其抗腐蚀性能优于不锈钢连接结构;表面涂蜡是抗腐蚀效果最好的防腐保护处理方法,其次是流动密封胶Dreibond,其结果优于Tuflok涂层,而无任何保护措施的连接结构抗腐蚀性能最差;腐蚀试验对残余扭矩衰减影响较小,从结果变化趋势看,Tuflok涂层对应的螺栓扭矩衰减情况较其他防腐保护处理方法明显。The corrosion resistance of combination sleeves,gasket bolts,and FDS bolts connected to galvanized steel plates with KTL and stainless-steel plates was studied through static corrosion test.The corrosion performance and residual torque attenuation between different combinations were obtained.At the same time,three anti-corrosion treatment methods were proposed for the corresponding fasteners,including surface waxing,flow sealant Dreibond,and Tuflok coating,and experimental analysis was conducted.The experimental results show that the corrosion resistance of the connection structure made of galvanized steel plate with KTL is superior to that of stainless-steel connection structure.Surface waxing is the best anti-corrosion protection method for corrosion resistance,followed by the flow sealant Dreibond,which has better results than Tuflok coating,and the connection structure without any protective measures has the worst corrosion resistance.The corrosion test has a small impact on the residual torque attenuation.From the trend of the results,the torque attenuation of the bolts corresponding to the Tuflok coating is much significant compared to other anti-corrosion protection treatment methods.

关 键 词：高压电池壳体连接 抗腐蚀性能 防腐保护处理 静态腐蚀试验 残余扭矩 

分 类 号：TG172.9[金属学及工艺—金属表面处理] U466[金属学及工艺—金属学]