巴掌大的传感器，如何守住动力电池焊接“生命线”？

Core Viewpoint - The article highlights the significance of laser welding technology in the precision manufacturing of power batteries, emphasizing the need for comprehensive quality control systems that integrate AI for real-time monitoring and defect detection [1][3][21]. Group 1: Laser Welding Technology - Laser welding is a critical process in the manufacturing of power battery components, where even minor defects can lead to safety hazards [2][3]. - The quality control technology in laser welding is becoming a competitive battleground within the industry [3][10]. - The laser welding online monitoring system showcased by the company at the Chain Expo demonstrates a full-process quality control capability, from pre-welding control to in-welding monitoring and AI decision-making [1][4]. Group 2: Company Innovations - The company presented its laser focus measurement device (LFS) and laser welding defect detection device (WDD) at the Chain Expo, which significantly enhance the yield and stability of the welding process [6][7]. - The LFS achieves a precision of ten micrometers and can adjust the focus in real-time, while the WDD utilizes optoelectronic sensing technology for immediate defect detection and production line correction [8][11]. - The company has developed AI-integrated detection technology that combines optical detection with proprietary AI algorithms, marking a core breakthrough in their patented technology [9][21]. Group 3: AI Integration - The integration of AI in laser welding detection is transitioning from passive detection to proactive prevention, with features like AI Overkill Reduction (AIOR) and AI Fault Diagnosis (AIFA) being implemented in top-tier production lines [15][16]. - AIOR reduces the overkill rate by 50%, allowing previously misclassified good parts to remain in production, thus enhancing efficiency and economic benefits [16]. - AIFA functions as a monitoring system that analyzes quality signal trends to preemptively detect anomalies in processing parameters, enabling real-time adjustments to improve yield [17][19]. Group 4: Industry Impact - The company's advancements reflect a broader trend in the lithium battery manufacturing sector, moving towards a "zero-defect" goal through digital twin technology that creates traceable quality data for each weld point [20][21]. - The development of a comprehensive detection system not only fills a domestic technological gap but also positions the company at an international standard, indicating a shift towards a new era of quality competition in the lithium battery industry [21].