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Quality Digest
Published: Wednesday, January 18, 2023 - 11:59 (Marposs: Auburn Hills, MI) -- Marposs, a global leader in measurement, inspection, and test technologies, has announced a solution for checking the welding joint of pouch cell batteries within the production process. Comprising interferometric sensors and an NCG (noncontact gauge) controller, the system works by splitting light into two beams that travel different optical paths and are then combined to produce interference, which can identify refractive changes and surface irregularities. Pouch cell batteries are typically sealed using impulse or contact welding (heat sealing), which fuses the plastic layers together. The thickness of this joint is a key indicator of the quality of the seal and must be measured while the material is still soft. Marposs is able to check this thickness right after the welding process using its noncontact, interferometric technology. The technique can measure thin, external plastic layers starting at 1 µm, as well as accommodate thickness variations due to the presence of the tabs in parts of the welding seam. The pouch-cell measuring solution includes a measuring snap with two interferometric sensors that enable the simultaneous measurement of the total thickness of the welding seam and the thickness of the two external plastic layers. Each sensor has a measuring field of 900/1.8 mm and offers a repeatability range within 1 mm of the application thickness. The basic configuration features the NCG controller, a high-speed elaboration gauge that can be connected to any machine for accurate and fast part-thickness control. Optional offerings include a Marposs 9066 industrial PC with Quick SPC software for statistical elaboration and data transfer. Special gauging solutions can be configured to measure the weld thickness in multiple positions, or to fully scan the welding seam along the complete perimeter of the pouch cell. For more information on solutions for electrical testing of battery cells, visit Marposs interferometric gauge. Marposs’ in-process solution for inspecting the weld thickness in pouch cell batteries Quality Digest does not charge readers for its content. We believe that industry news is important for you to do your job, and Quality Digest supports businesses of all types. However, someone has to pay for this content. And that’s where advertising comes in. Most people consider ads a nuisance, but they do serve a useful function besides allowing media companies to stay afloat. They keep you aware of new products and services relevant to your industry. All ads in Quality Digest apply directly to products and services that most of our readers need. You won’t see automobile or health supplement ads. So please consider turning off your ad blocker for our site. Thanks, For 40 years Quality Digest has been the go-to source for all things quality. Our newsletter, Quality Digest, shares expert commentary and relevant industry resources to assist our readers in their quest for continuous improvement. Our website includes every column and article from the newsletter since May 2009 as well as back issues of Quality Digest magazine to August 1995. We are committed to promoting a view wherein quality is not a niche, but an integral part of every phase of manufacturing and services.New Marposs Solution for Inspecting Welds on Pouch Cell Batteries
Using noncontact, interferometric technology
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