power battery module line:
In the process of automatic assembly of power battery modules, the original semi-automated production line has become increasingly unable to meet the needs of battery manufacturers for high automation.

For this reason, Shanghai Junyi has developed an intelligent assembly line with high production rhythm, including component loading, cleaning, gluing, module stacking, side plate gluing, module side seam CMT welding/side seam laser welding, module laser coding, module heating, module film sticking, module static placement, pole laser welding, weld polishing, and module automatic offline. The key station to achieve fully automated production, can achieve a variety of flexible production of products, compatible module size process types.
1. Multi-process compatible:Side seam welding is compatible with CMT arc welding and laser welding, which can realize fast switching.
Visual positioning system: after the battery module is assembled, the dimensional tolerance is often large, which makes it difficult to meet the gap position size requirements of laser processing, resulting in a rapid decline in processing quality. the introduction of visual positioning system can meet the requirements of accurate positioning, and the general accuracy can reach more than ± 0.05mm. through visual photographing data collection and feeding back the material deviation to the control system, the high-precision positioning of the processing position is realized.
2. Visual tracking system:Since the height of each welding position of the battery module cannot be completely consistent, welding will lead to the occurrence of virtual welding and burst welding, and the welding quality is difficult to guarantee. It must be equipped with a height following system, that is, at each welding position, the focal length adjustment axis can be fine-tuned to fix the laser welding head at the focal position.
The visual addressing laser ranging is used to address the pole position of the module, in which the visual camera locates the size deviation of the pole in X and Y directions, the laser ranging is used to determine the size deviation of the pole in Z direction, and the deviation value is fed back to the laser welding head to ensure the welding quality. At the same time, the laser ranging is used to check the flatness of the pole surface and improve the qualification rate of the equipment.
3. Multi-product adaptive system:After batteries of different specifications and sizes are stacked into modules of different sizes, each process needs to be adapted with an adaptive system to ensure the linkage of the whole line beat, especially the welding process. Only modules of different sizes can be adapted to complete the module PACK process. The adaptive system loads the necessary servo switching system, and implements the automatic switching and positioning of the position in the product processing area according to the incoming materials of the product. The welding work can be completed and transferred to the next process without any restriction of incoming materials. 4. Intelligent inspection after welding: manual inspection of weld appearance is used. The judgment basis is relatively objective. Experience is required. The judgment basis is difficult to digitize and easy to misjudge. The laser profile scanner CCD camera is used to collect three-dimensional information and color information of weld. The judgment is based on digitization, checking the length, width, height and color of weld, judging whether the weld is penetrated, broken arc, porosity and discoloration of weld. The equipment automatically judges whether the weld, and upload the collected weld information to MES for later inquiry.
5.MES management system:The whole line body has management modules such as manufacturing data management, planning and scheduling management, production scheduling management, inventory management, quality management, work center, material management, production process control, underlying data integration analysis, and upper data integration decomposition. The whole line can monitor the production and test data of the production process in real time, and the data can be traced and stored accurately. The whole line configuration server console and large screen display function, the implementation of intelligent manufacturing and digital enterprise platform.