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Software For Li-Ion Battery Manufacturers

July 1, 2010

NDC, a manufacturer of measurement and control systems for process industries is offering enhancements to its Spot-On software platform for TDi System, with controls capability to help battery makers operate their processes more efficiently and within specification limits, while improving product consistency and process insight.

The Spot-On Coating Application Software includes the following features for Li-Ion battery manufacturers:

same spot measurement, to eliminate any influence from substrate thickness variability in the coating thickness calculations; true net coat software, to provide true coating thickness measurement, independent of density and composition variation between substrate and coating; variable isolation software, to segregate cross direction from machine direction variations to improve control performance and speed of response; gap exclusion software for patch coating to identify and accurately measure coated versus uncoated areas of the substrate.

NDC’s TDi System (Total Distributed Intelligence) accurately measures the thickness or mass of the L-Ion coating, whether the L-Ion is applied as a continuous or patch coating to the aluminum or copper foil substrate; non-contacting real-time measurements are achieved using either Beta (transmission) or Gamma (single-sided backscatter) sensors, depending on the product weight range, to first measure the mass of the substrate and then the total mass after the coating machine.

The software accurately computes the coating mass independently of the substrate and excludes the uncoated gaps, to provide a reliable control signal to the actuator for process automation.

The Sensors are mounted on NDC’s MiniTrak Scanning Frames whose positional precision permits same spot differential measurements. Many competitor systems use same line measurements but this provides much lower resolution. NDC’s positional accuracy is better than +/- 1mm even on dual sided coatings. This avoids the need to use multiple scans to create a composite value and provides results at the end of each scan.

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