Joining method for metal-metal and metal-plastic bonds and parts produced therewith
A unified chemical pretreatment and CNC-controlled powder coating process addresses flux residue and thermal distortion issues in metal-plastic joints, achieving stable, efficient, and cost-effective assembly of large-format components like electric vehicle cooling elements.
Patent Information
- Application Number
- PCT/EP2025/082915
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-12-13
- Filing Date
- 2025-11-13
- Publication Date
- 2026-06-18
AI Technical Summary
Current methods for joining metal and plastic parts in large-format components, such as cooling elements for electric vehicle batteries, face challenges including flux residue issues, high production complexity, thermal distortion, and inefficiencies in chemical pretreatment, leading to surface defects and impaired cooling performance.
A method involving chemical pretreatment, horizontal positioning, powder coating with precise application, and simultaneous curing of parts at lower temperatures, using a unified cleaning and pretreatment system for both metal and plastic components, and a CNC-controlled powder application process to ensure stable, distortion-free joints.
This method enables secure, precise, and cost-effective joining of metal and plastic parts without thermal distortion, reducing energy consumption and time, while ensuring consistent adhesion and preventing flux residue-related defects, thereby enhancing the cooling performance of battery components.