Split type brazing elbow joint and processing method thereof

By using a composite sealing structure and flow channel design for a split-type brazed pipe joint, the problems of low assembly efficiency, poor sealing, and uneven fluid flow of traditional pipe joints in new energy vehicle battery packs are solved, achieving high-efficiency sealing and fluid flow, supporting modular production and simplified installation and maintenance.

CN122407896APending Publication Date: 2026-07-17马鞍山纳百川热交换器有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
马鞍山纳百川热交换器有限公司
Filing Date
2026-05-26
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional integrated bend joints in new energy vehicle battery packs suffer from low assembly efficiency, poor consistency, insufficient sealing and pressure resistance, and uneven fluid flow, which affect the reliability and thermal management efficiency of the battery system.

Method used

The design adopts a split brazed pipe joint, including the pipe joint body and the pipe connector. A composite sealing structure is formed by the limiting plate and the convex ring. The bending part is designed as a large curvature gentle bend and a flow channel without diameter reduction. A continuous L-shaped combined weld is formed by filling the capillary action with molten solder. A flexible neck and a corrugated pipe section are combined to isolate vibration and improve fluid flow.

Benefits of technology

It improves sealing reliability, reduces fluid pressure drop loss, supports modular production, simplifies installation and maintenance processes, reduces unit manufacturing costs, effectively isolates vibration energy, and improves fluid flow and thermal management efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开了一种分体式钎焊弯管接头及其加工方法,包括弯管接头本体和弯管连接件,所述弯管接头本体包括一体成型并依次连接的水平部、弯曲部和垂直部,水平部连接弯管连接件,垂直部与电池冷板焊接,弯管连接件靠近水平部的一端设置有焊接端,焊接端包括呈阶梯状分布的凸管、凸台和环形板,凸管与水平部插接且伸至水平部内部。本发明的一种分体式钎焊弯管接头及其加工方法,在冷板连接端通过限位板端面主焊接面与定位平口楔形间隙填充形成复合密封结构,主焊接面提供轴向密封,楔形填充区提供径向辅助密封,泄漏路径需同时绕过两个密封面,密封可靠性较单一平面焊接提高一个数量级。
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