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Technological Innovation | ANWHA Lithium Vision Inspection Achieves a New Breakthrough

2022-06-24

The new‑energy vehicle industry is booming, and the power‑battery sector has entered a phase of rapid expansion. Consequently, demand for lithium‑ion battery manufacturing equipment is steadily rising, driving robust growth in machine‑vision applications within the lithium‑battery field.

 

Machine vision is a critical component in ensuring the quality of lithium‑ion battery products and enhancing production efficiency. It enables functions such as inspection, localization, and identification, significantly advancing the automation and intelligence of battery manufacturing and thereby boosting overall productivity.

 

ANWHA, through continuous technological innovation, has developed an infrared position‑detection system for bolt tightening that can identify bolt spacings as small as 10 mm and compress the infrared camera’s response time to 200 ms. Designed to inspect different areas, it offers higher precision, greater speed, and enhanced flexibility. By enabling online assembly and inspection, it helps customers optimize their production processes, increase yield rates, and effectively improve product quality and manufacturing efficiency.

 

This bolt‑tightening infrared position‑detection system is used on manual workstations of power‑battery PACK assembly lines to identify the positioning of bolts and screws during tightening and to perform positional error‑proofing checks. Its specific features are as follows:

 

1. Higher precision. Given the camera’s relatively long working distance, it must be compatible with a range of 1,200 mm to 3,500 mm to meet the core needs of most customers. Building on this foundation, ANWHA has continuously refined its technology, further enhancing the precision of its infrared position‑detection system, and can now reliably identify bolt spacings as small as 10 mm.


2. Higher speed: The infrared camera’s processing time has been reduced to 200 ms, enabling continuous imaging with near‑real‑time signal communication. It also supports multiple common communication protocols, including TCP/IP, EIP, and Profinet. Regardless of the communication method used, as long as the host computer’s hard drive is sufficiently large, there is theoretically no limit to the amount of program code that can be stored. This allows for high‑volume bolt and screw inspection and can output the positional identifiers of each bolt or screw.

 

3. Greater flexibility. The infrared position‑detection system for bolt tightening is highly flexible, allowing the infrared camera’s position and lens to be adjusted according to the varying bolt‑distribution patterns at different workstations, thereby achieving maximum accuracy. For special‑location detection points, additional infrared cameras can be deployed to address those specific areas.

 

Currently, the bolt-tightening infrared position detection system developed by ANWHA not only meets the production and inspection requirements of leading power battery customers, accurately, quickly, intelligently, and stably detecting and distinguishing bolt positions, but also further improves the yield rate of PACK assembly manufacturing. At the same time, it is compatible with multiple working distances and various communication protocols, significantly enhancing overall line efficiency.

 

 

 

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