Coherix Technology Improves EV Battery Quality While Reducing Cost

Adhesives can cost $180 or more per gallon. The use of Coherix technology has been proven to reduce the amount of sealant used in the assembly of battery packs and covers by up to 30%. For an assembly line producing 300,000 batteries per year, the annual savings could total $4 million.

Dennig notes that manufacturers around the world are in the race to improve battery quality, safety, and performance while reducing weight and cost. He warns, however, that mass production of EV batteries is still in its infancy, and many companies continue to develop quality-control processes on a trial-and-error basis.

The company has pioneered the development of 3D machine vision, artificial intelligence, and proprietary process-control software to manage critically important processes to seal battery cases and covers to ensure performance and safety.

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“The automotive industry is moving at light speed in its development of battery technology,” Dennig says. “The growth in EV sales puts a spotlight on battery-manufacturing processes needed to properly seal lithium-ion battery cases and covers to achieve optimal performance, safety, and quality.”

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(Coherix: Ann Arbor, MI) — Coherix is developing quality-control technology that can improve EV-battery safety, service life, and quality while reducing production costs.

“Adaptive process control and 3D-vision technology will be the quality control standard for sealing battery closures in the not-too-distant future,” Dennig says. “Our technology is rapidly gaining acceptance not only in North America but in the Asia Pacific region and Europe as well.”

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He notes that, unlike 2D and other adhesive-inspection systems, Coherix 3D quality-control systems can measure and adjust the amount of sealant used in robotic dispensing processes and ensure that critical center-height and volume specifications are met.

Many battery manufacturers today rely on inefficient 2D camera systems to monitor the application of adhesives for battery packs and covers. Dennig points out that 2D systems are affected by ambient light, unable to detect adhesive volume, and can’t monitor other critically important sealant-application data (such as bead shape, center height, or cross-section measurements).