Lead-Acid Battery Vent Cap Inspection
Non‑contact, Non‑destructive Testing of Hidden Vent Caps in Sealed Automotive Batteries
In automotive lead-acid battery manufacturing, vent caps are critical for safe pressure regulation and gas release. Once assembled, these vent caps are sealed beneath plastic covers, making conventional inspection methods ineffective. TeraLumen’s terahertz inspection technology enables reliable subsurface verification of vent cap presence without disassembly, surface preparation, or production disruption.
Traditional Inspection & Challenges
Terahertz Inspection Workflow
Direct a terahertz pulse onto the sealed battery surface (single-side access).
Capture reflections from internal interfaces—plastic, air gaps, and vent cap features
Extract signal features and classify: vent cap present vs missing (automation-ready).
THz Inspection Results & Key Advantages
- Clear identification of acceptable and defective assemblies
- Single-side, non-contact inspection through plastic covers
- Reliable detection of vent caps beneath sealed covers
- Non-destructive and non-ionizing inspection method
- Automation-ready for inline production inspection
Conclusion
TeraLumen’s terahertz inspection technology provides a production-ready solution for verifying vent cap presence in sealed automotive battery assemblies. By enabling subsurface inspection where conventional methods fail, manufacturers can improve safety, reduce rework, and ensure consistent product quality.
Solution With
Lead-Acid Battery Vent Cap Inspection
Non-contact, non-destructive Testing of hidden vent caps in sealed automotive batteries.
In automotive lead-acid battery manufacturing, vent caps are critical for safe pressure regulation and gas release. Once assembled, these vent caps are sealed beneath plastic covers, making conventional inspection methods ineffective. TeraLumen’s terahertz inspection technology enables reliable subsurface verification of vent cap presence without disassembly, surface preparation, or production disruption.
Traditional Inspection & Challenges
Terahertz Inspection Workflow
Direct a terahertz pulse onto the sealed battery surface (single-side access).
Capture reflections from internal interfaces—plastic, air gaps, and vent cap features
Extract signal features and classify: vent cap present vs missing (automation-ready).
THz Inspection Results & Key Advantages
- Clear identification of acceptable and defective assemblies
- Single-side, non-contact inspection through plastic covers
- Reliable detection of vent caps beneath sealed covers
- Non-destructive and non-ionizing inspection method
- Automation-ready for inline production inspection
Conclusion
TeraLumen’s terahertz inspection technology provides a production-ready solution for verifying vent cap presence in sealed automotive battery assemblies. By enabling subsurface inspection where conventional methods fail, manufacturers can improve safety, reduce rework, and ensure consistent product quality.
