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Ultrasonic Metal Welding
Case
Ultrasonic Copper-Aluminum Busbar Welding | Dissimilar Metal Joining Process
2026-08-05 00:00:00
.welder-sample{font-size:15px;line-height:1.85;color:#374151;max-width:900px} .welder-sample h3{font-size:18px;font-weight:600;color:#111827;margin:28px 0 12px;padding-left:14px;border-left:3px solid #DC2626} .welder-sample p{margin:0 0 14px} .welder-sample .spec-box{background:#F9FAFB;border-radius:10px;padding:18px 22px;margin:16px 0;border-left:3px solid #DC2626} .welder-sample .spec-box strong{color:#111827} .welder-sample img{max-width:100%;height:auto;border-radius:10px;margin:8px 0;box-shadow:0 2px 12px rgba(0,0,0,0.08)} .welder-sample .img-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px} .welder-sample .img-grid img{width:100%;height:auto;margin:0} .welder-sample .tag{display:inline-block;background:#FEF2F2;color:#DC2626;font-size:12px;font-weight:600;padding:2px 10px;border-radius:10px;margin-right:4px} @media(max-width:768px){.welder-sample .img-grid{grid-template-columns:1fr}} 焊接类型 超声波铜铝巴焊接(Ultrasonic Cu-Al Busbar Welding)—— 将铜巴(铜排)与铝巴(铝排)通过超声波固相焊接实现异种金属连接,解决传统钎焊/电阻焊中铜铝界面脆性金属间化合物过厚的问题。 工艺参数: 频率15kHz | 焊接功率4000W | 焊接时间0.5~1.0s | 振幅55~80μm 适用组合: 铜排(0.3~3.0mm) + 铝排(0.5~4.0mm) 焊接效果: 界面金属间化合物层≤2μm | 焊接强度≥铝母材强度90% 导电性能: 接触电阻≤铝母材等效长度电阻 工艺优势 铜铝异种金属焊接是新能源电池Pack制造中的关键工艺。超声波焊接在固态下完成结合,避免了熔焊中铜铝互溶产生的脆性相(CuAl₂、Cu₉Al₄等),大幅提升焊点的长期可靠性。48小时盐雾测试及-40°C~+125°C热循环测试后焊点性能无衰减。 广泛应用于:动力电池模组Busbar连接、储能系统铜铝过渡排、充电桩内部铜铝转接。 ▼ 铜铝巴焊接样品实物图展示
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