Battery Composite Surface Dimension Detection for Invisible Lamination

The patent uses image copying technology to capture images of both surfaces of the cathode sheet before lamination. By creating visual copies (images) of the cathode surfaces, the system can later reference these copies to calculate composite surface dimensions even though the actual composite surface is invisible after lamination. This resolves the inspection difficulty by working with copies rather than direct observation.

The patent introduces image processing algorithms and calculation systems as intermediaries between the physical cathode sheet and the final dimension measurement. The system uses the visible non-composite surface as an intermediary reference to infer the dimensions of the invisible composite surface through mathematical calculations, bridging the gap between visibility and measurement accuracy.

The patent performs dimension verification in advance by capturing images of the cathode sheet surfaces before the lamination process. By calculating the composite surface dimensions based on pre-lamination images and the visible non-composite surface, the system proactively identifies potential short circuit risks before they occur, rather than attempting to inspect the invisible composite surface after lamination.

The patent replaces direct physical inspection of the composite surface with an image processing and calculation system. Instead of using mechanical measurement tools that would require direct access to the composite surface, the system uses optical imaging and algorithmic calculation to indirectly determine dimensions, maintaining manufacturing simplicity while enabling safety verification.