At present, the lithium battery industry has entered a period of rapid development. In February 2022, the Ministry of Industry and Information Technology released the operation of the lithium-ion battery industry in 2021. According to the data, in 2021, the national output of lithium-ion batteries will be 324GWh, a year-on-year increase of 106%, and the total output value of the lithium battery industry will exceed 600 billion yuan. Among them, the output of consumption, power and energy storage lithium batteries was 72GWh, 220GWh and 32GWh respectively, a year-on-year increase of 18%, 165% and 146% respectively. In 2021, China's lithium battery industry will achieve sustained and rapid growth.
With extremely high detection efficiency, detection accuracy and super stability, machine vision is also changing the production method of lithium batteries and becoming the standard configuration of lithium battery production and assembly. As an expert in machine vision for more than 40 years, Cognex provides advanced products and solutions such as vision systems, vision software, vision sensors, and industrial barcode readers in the field of lithium batteries.
From March 3 to 5, 2022, as the vane of the intelligent manufacturing industry in South China, the SIAF Automation Exhibition was held in Guangzhou, and Cognex attended the exhibition with the latest products and solutions to empower digital transformation with superior products. During the exhibition, Mr. Zhang Ming, the head of Cognex's lithium battery industry, was interviewed by Veken.com, showing us Cognex's focus and vision from the aspects of products and industries.
Cognex booth at the exhibition site
Q: Cognex has been focusing on the lithium battery manufacturing industry for a long time, and the product technology of the machine vision industry is iteratively updated rapidly, can you talk about what are the core advantages of Cognex in empowering the lithium battery manufacturing industry?
A: In the whole process cycle of lithium battery manufacturing, from cell to intra-factory logistics, to module pack, Cognex machine vision can provide comprehensive solutions to help intelligent manufacturing factories realize the visualization of the production process, support product tracking and traceability, and bring efficiency improvement and quality assurance. At present, Cognex In-Sight series of 2D smart cameras, 3D vision products, deep learning, and DataMan barcode readers, a series of products, give Cognex machine vision more powerful functions and help smart factories better land. In terms of technology, Cognex's products have exclusive patents, which can achieve millisecond-level resolution speed, μm-level detection accuracy, and achieve large-field/low-angle code reading; On the service side, Cognex solutions offer timely delivery, rapid deployment, and ease of use, as well as custom modules that allow customers to scale and embed as needed. It can be said that Cognex's products can well meet the requirements of the lithium battery industry for machine vision and empower the rapid development of the lithium battery industry.
Lithium battery industry application
Q: Cognex is leading the industry in breakthrough technology in the field of deep learning, can you tell us about the impact of AI smart cameras on the lithium battery manufacturing industry?
A: In recent years, the popularity of artificial intelligence has been rising, and Cognex, as the first company in the world to implement artificial intelligence in the industrial environment, also has full experience in the application of lithium battery industry. Cognex found that defect detection is critical to the safety of lithium batteries, so lithium battery companies have put forward higher requirements for visual inspection, especially at present, the scale of power battery manufacturing continues to expand, and this demand has become more and more intense.
The new demand for visual inspection of power batteries has posed a huge challenge to traditional algorithms, and conventional visual inspection has been unable to meet the needs of product consistency, while Cognex's AI-based deep learning-based detection technology can improve the accuracy and robustness of defective product detection, effectively solve customer pain points, and escort battery safety. For example, lithium batteries can have low-frequency defects such as welding cracks, which pose safety hazards, but cloud-based deep learning requires thousands of samples, takes months, and is costly. Through Cognex's deep learning, the number of samples can be reduced to single digits, the difficulty of sample collection can be solved, the training cycle can be greatly shortened, the contradiction between the frequent changeover of lithium battery products and the long training cycle of deep learning models can be solved, and the input-output ratio of enterprises can be improved. The product has also been recognized by many leading enterprises and has been installed and deployed in large quantities.
Deep learning-based In-Sight D900 vision system
Q: What products or solutions did Cognex bring to us at this SIAF exhibition?
A: In this exhibition, Cognex will bring a comprehensive range of products and solutions, and will also bring a simulated assembly line for online testing of power battery cells, equipped with DS 820 products, which can realize the weld inspection of the top cover of the battery cell. In addition, VisionPro Deep Learning for cell seal nail appearance and welding concentricity inspection, DataMan 475V for cell skin DPM QR code level verification, DataMan 374X for cell skin DPM QR code reading, In-Sight 3D-L4000 for cell top cover flatness detection, and cell top cover OCR reading, hole presence or not. In-Sight 9912 and other products for solder joint position inspection. Through the functional advantages of each product, the fully automated testing process is realized, and the product quality and production efficiency are improved.
Cognex power battery full production simulation line
Q: Core components and software algorithms are critical, what are Cognex strengths in this regard?
A: One of Cognex's core products is software algorithms, which has 40 years of technology accumulation and has formed a number of product patents.
In terms of deep learning, the company focuses on independent research and development in combination with the needs of the manufacturing industry for machine vision, and at the same time acquires and acquires some leading deep learning companies to improve the entire product line, so as to better solve the defect detection and product consistency problems encountered in the manufacturing process of the enterprise.
In terms of hardware, in order to cope with the shortage of chips in the past two years, Cognex has increased R&D investment and launched self-developed hardware and chips to ensure production efficiency improvement, complete product delivery in a timely manner, and help customer enterprises achieve intelligent digital transformation as soon as possible.
As far as lithium batteries are concerned, Cognex has different degrees of cooperation and successful cases with companies on China's TOP10 list, deploying a large number of machine vision products for them to help enterprises quickly increase battery production capacity and improve battery production processes. In addition, Cognex has also deployed deep learning vision products for many lithium battery OEMs to help customers quickly solve pain points in the production process.
VisionPro Deep Learning
Q: As one of the important strategic directions of the country in the future, what is Cognex's view on the future development prospects of the lithium battery manufacturing industry empowered by machine vision technology?
A: China's lithium battery is moving from GWh to TWh era, power battery manufacturing is experiencing a new round of industrial upgrading with automation, digitalization and intelligence as the core, and the landing of intelligent manufacturing factories urgently needs machine vision to improve efficiency, quality and production capacity. At present, power battery companies pay more attention to the deep integration of production lines and digital technologies such as AI intelligence, big data, and cloud computing, so as to realize the collection and intelligent processing of data and information resources in the manufacturing process. Cognex is also redefining the future of industrial vision with a range of products and services.
In the past few years, the single-line production capacity has increased from 2GWh to 4GWh, the coating width has been expanded from 1-1.2m to 1.5-1.8m, the winding speed has increased from 12-16ppm to 25-32ppm, and the lamination speed has increased from 0.25s/PCS to 0.125s/PCS...... All of these improvements require automation, digitalization, and intelligence, and Cognex products play an important role in this.
At present, the global lithium battery industry is undergoing profound changes, and the upgrading of power battery performance and quality competition has led to the acceleration of new equipment and new process iteration, and lithium battery equipment urgently needs to improve production efficiency and stability. Under this, ensuring quality consistency, greatly increasing production capacity, quickly responding to production needs, realizing effective collaboration between equipment, and responding to rapid iteration of the process route have become the five major pain points of large-scale battery manufacturing and upgrading in the TWh era. In the future, Cognex will continue to build equipment that is more suitable for automated production lines to help customers reduce costs and achieve a win-win situation.
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