NEWS CENTER

Micron-Level Precision! NewOCT Weld Penetration Detection System: One-Stop Solution for Non-Destructive Full Inspection of Tab Welding

Time:2025-8-30

Introduction

In the field of power battery manufacturing, the welding quality of tabs directly determines the safety performance and service life of battery cells. Traditional inspection methods mainly rely on manual sampling inspection or destructive testing, which are not only inefficient but also carry the risk of missed defects. The NewOCT Galvo Welding Detection System, based on Optical Coherence Tomography (OCT) technology, achieves non-destructive full inspection of weld penetration with its micron-level resolution, driving the power battery manufacturing industry into a new era of intelligent and high-precision production.

Micron-Level Precision! NewOCT Weld Penetration Detection System: One-Stop Solution for Non-Destructive Full Inspection of Tab Welding

I. Technological Breakthrough: Core Capability of Micron-Level Precision

The NewOCT Weld Penetration Detection System is a one-stop integrated solution for the welding and inspection of battery cell tabs. It includes: NewOCT Galvo Welding Head, Welding Control System, and OCT Detection System, enabling simultaneous welding and weld penetration inspection of battery cell tabs.

  1. Ultra-Precision Detection Technology
  • Hardware Performance: The axial resolution of the OCT system is ≤ 0.02mm (20μm), accurately identifying defects during welding such as insufficient/excessive weld penetration, cold welding, and missing welds.
  • Detection Range: The maximum measurement range is ≥ 12mm, covering all application scenarios of tab welding, with a weld penetration detection accuracy of ≤ 10%.

2.Integrated Synchronous Welding and Inspection

  • Integrated Design: Integrates the NewOCT Galvo Head and laser welding system, completing weld penetration inspection simultaneously with the welding process. This eliminates the time delay and misjudgment risk of traditional offline inspection.
  • Process Adaptability: Supports multiple oscillation waveforms including linear, sine, figure-of-eight, U-shaped, and arc, adapting to high-efficiency tab welding processes (flying welding speed up to 200mm/s). Detection accuracy remains unaffected by welding speed.

II. System Advantages: Full-Process Closed-Loop Control and Intelligence

  1. Full-Process Quality Control
  • Pre-Welding: A reserved height measurement interface enables dynamic focus compensation, ensuring welding consistency.
  • In-Welding: Real-time weld penetration monitoring, combined with triple safety interlocks (position deviation, laser emission duration, system status), guarantees zero risk during 8kW full-power operation.
  • Post-Welding: Data traceability and recipe-based management, supporting one-click calling of multiple parameter recipes.

2.Industry 4.0 Compatibility

  • Supports industrial protocols such as EtherCAT, Profinet, and Modbus TCP, directly connecting to the MES system to realize bidirectional interaction between welding parameters and detection data.
  • Optional field lens contamination detection and power monitoring devices are available to enhance process controllability.

III. Industry Value: Comprehensive Upgrade from Cost Reduction to Reliability

1.Economic Benefits
Labor costs reduced by 90%, material waste lowered by 80%, rework rate decreased by 50%, and the risk of batch scrapping completely eliminated.

2.Quality Assurance
The NewOCT Weld Penetration Detection System achieves full closed-loop quality control of the welding process through high-precision sensors (real-time monitoring of position, temperature, and power) and dynamic compensation algorithms.

3.Technological Prospects
The dedicated NewOCT Galvo Head and custom-developed algorithms can be extended to fields requiring micron-level precision such as precision electronics (FPC welding) and medical devices.

Applications

  • Xinnashi Makes an Appearance at Changan Automobile Technology Exchange Meeting, with Efficient One-Stop Welding Solutions Boosting the Upgrade of Smart Manufacturing

    On September 26th, the “2025 Changan Automobile Forward-Looking Technology and Ecological Chain Cooperation Exhibition & Exchange Meeting” was held at Changan Automobile’s Global R&D Center in Chongqing. Xinnashi Intelligent Technology made an appearance at the event with three innovative products: the NewOCT Weld Penetration Detection Welding Head, the NewScan-3D Galvo Flying Welding Head, and the […]

    Read More
  • Light of Welding, Core of Smart Manufacturing: Newlas Three Innovative Solutions Debut at AMTS 2025

    Amid the flashes of laser light, the art and technology of welding intertwine on the metal surface. There is no traditional scene of sparks flying, only nearly silent and precise operations — this is exactly the NewScan-3D Galvo Flying Welding System demonstrating the “non-contact” flying welding technology. On the opening day of the 20th Shanghai […]

    Read More
  • Cheng Yongwen, Vice Governor of Hubei Province, Went to Newlas to Investigate and Guide the Work

    On November 26, Cheng Yongwen, vice governor of Hubei Province, deeply investigated the production and operation, R&D and innovation, and market expansion of Newlas enterprises, and held a high-quality development of Optical Valley laser industry on-site promotion meeting.Newlas general manager Li Bin and the company team received and reported the work to Vice Governor Cheng […]

    Read More
  • Newlas cylindrical battery turret flying welding system solution drives production capacity leap

    At a time when new energy vehicles are booming, cylindrical batteries are becoming increasingly important in the power battery market due to their advantages such as high energy density, good heat dissipation performance, and good consistency. However, market demand is growing rapidly, and traditional welding processes have shortcomings such as low efficiency and insufficient precision […]

    Read More

Customer-centric, providing world-class laser application solutions
Newlas adheres to the cooperation concept of innovation, focus, efficiency and win-win,
committed to the development of laser applications and independently researches and develops core components

Get Quotation