Full-size high and low voltage power battery modules appearance inspection
Customer requirement
- The power battery, as the core component of new energy vehicles, is gradually developing towards the direction of vehicle integration.With a deep understanding of vehicle power, structure, electrical combination, full size appearance inspection of the power battery is required.
- In addition to providing energy, the batteries modules required to be sustainable in specified temperature,force and weight. The quality control of battery module size and appearance is critical for the reliability of the battery. Therefore, more stringent appearance and assembly requirement is required.
- The size and weight of battery modules have significantly increased. Manual testing is
- Power battery manufacturing requirements: vehicle regulations and quality requirements, digital quality management system, and,large-scale and efficient production requirements.
Technical difficulties
- Large product size and high accuracy: Size greater than 1000mm, accuracy requirement less than ± 2mm
- 3D measurement, flatness measurement, morphology defect detection
- The new energy industry cannot providea large number of battery sample
- Strong interference material, mostly made of metalwith reflection
- Complex defect types, with 20 types of appearance defects
- High difficulty of identifying thedefects, blue film, scratches, weld bead detection
- Large and heavy battery packages with module weight greater than 75KG
Device Main body and hood view
Workflow
3D Dimension/Plan Measurement Example
3D Point Clouds Picture
Metal surface defect detection
Dirt
Scratch
Plastic surface defect detection
Scratch
Blue film defect detection example: dirt, friction marks, scratches, bubbles