The transformation of the global energy structure and the rapid development of new energy vehicles have brought unprecedented opportunities to the lithium battery industry. With the continuous expansion of the market and the growth and change of demand, more and more lithium battery companies are accelerating the deployment of intelligent equipment to improve product quality, production efficiency and automation level. Migration Technology has worked with integrator partners to provide a 3D vision solution for a global leading lithium battery customer, and the 3D vision products with excellent performance, user-friendliness, stability and ease of use have been deeply integrated with the lithium battery production lineCell unloading and disc automationto help improve the efficiency of the production line and the quality of production.
Production line process and visual needs
The application scenario of the project is the cell blanking code disc of the cell-module process section of the lithium battery production line. In the assembly process of power batteries, three layers of process sections are mainly involved: battery cell process section, module process section, and battery pack (pack) process section. The battery cell is the smallest unit of the power battery, and after the manufacturing is completed,The whole stack is conveyed to the unloading pallet stationMultiple cells are encapsulated in a housing frame to form a module; Several modules are integrated and managed, which is called a battery pack.
There are more than 5 kinds of cells with different specifications on the production line, and the frequency of production replacement is high, which requires good visionCompatibility；The surface of the cell is uneven, and the foam tray is deformed, which is on the 3D cameraImaging capabilities are demanding；The overall production quality and efficiency of the product need to be guaranteed, and the requirements areHigh visual accuracy and short time
Work together to create an efficient 3D vision solution
The project uses vision software and Epic Eye X industrial 3D cameras independently developed by Migration Technology to guide KUKA robotic arms and fixtures to unload the disc. 
Recommended camera models: Epic Eye X, Epic Eye S-M
The Epic Eye X camera is compact and can be flexibly mounted at the end of the robotic arm. High precision, photo time 15s, which can quickly generate complete and accurate point clouds for cells with complex surface structures. The vision software is stable and easy to use, compatible with 5 different specifications of workpieces, and the changeover is easy and fast; The visual accuracy is 02mm, processing data time 25s；The robotic arm can be guided to grab 8 cells at a time, and the operation efficiency is significantly improved.
The industry standard is suitable for multiple scenarios
3D vision has a wealth of application scenarios in the lithium battery industry. In the cell process section, in addition to the blanking code plate, it can also be used for cell feeding, weld detection, etc.; In the module process section, it can be used for module loading and unloading, assembly, etc.; In the PACK process section, it is possible to guide and position the robotic arm. 
The Epic Eye series of 3D cameras has achieved near, medium and long field of view coverage at different working distances, and the vision software is versatile, easy to use, and extremely stable. In the future, we look forward to working with integrator partners to achieve more projects in the lithium battery industry and help more customers improve the digital intelligence level of production lines.