Each station of the battery module production line is a key link to ensure that battery modules are produced efficiently, accurately and safely from raw materials to finished products. These workstations usually include cell processing, automated assembly, welding, inspection, assembly and testing. The following is a detailed introduction to each station of the battery module PACK production line:
1. Battery core processing unit
1) Battery core loading
Manual/automatic loading: Depending on the degree of automation of the production line, cells can be transported from the storage area to the production line by manual or automated equipment.
Scanning and sorting: Use high-precision scanning equipment to read the QR code or barcode information on the battery cells, and enter individual cells into the production line system for traceability.
2.OCV testing and sorting
Open circuit voltage measurement: Use high-precision measuring equipment to measure the open circuit voltage (OCV) of the battery cells to evaluate the performance of the battery cells.
Data analysis: The health status and remaining capacity of the battery cells are judged based on OCV data, and unqualified battery cells will be eliminated.
2. Automated assembly unit
1) Cell stacking
Automatic/manual stacking: The sorted cells are stacked into modules in order through automated equipment or manually.
2) Module extrusion sleeve steel strip
Extrusion fixation: After extrusion using an electric/pneumatic extruder, use steel belts to securely fix the module.
3) Automatic engraving/pasting code
Automatic coding/pasting: Using equipment such as scanning guns and marking machines, the form of coding or pasting is adopted. Scan the QR code of each battery cell and generate a module QR code, binding the battery cell and module into a whole.
3. Welding unit
1) Insulation detection
Insulation detection: Use high-precision measuring equipment to detect whether the insulation of the module is good.
2) Polar addressing
Pole addressing: Use a high-precision camera to take pictures of the position of each pole of the module and generate a coordinate system.
3) Pole cleaning
Pole cleaning: Use a laser cleaning machine to clean the oxide layer on the surface of the pole so that there is no oxidized material on the battery pole and the welding effect is improved.
4) Bus installation
Busbar installation: Install the busbar to the module surface manually.
5) Laser welding
Laser welding: Use laser welding to weld the busbar and poles together to achieve series and parallel connection of battery cells.
4. Detection and testing unit
1) Post-weld inspection
Dust removal and inspection: Clean weld slag and conduct weld inspection to ensure welding quality.
NG processing: When unqualified products are found, they will be processed or repaired through the NG lifting trolley platform.
2) EOL testing
Module EOL test: Final inspection of the assembled module, including internal pressure, internal resistance, performance and other tests.
Data recording: Record test data for subsequent quality traceability and analysis.
3) Module offline
Module off-line: Modules that pass the test are transferred to the pack line or material pallet using a gantry crane.
Summarize
Each station of the battery module PACK production line works closely together to achieve efficient, precise and safe production of battery cells through automated equipment and precision technology. The stable operation of these stations is of great significance to improving the production efficiency and product quality of the production line. At the same time, with the continuous advancement of technology and changes in market demand, the battery module PACK production line will continue to be optimized and upgraded to meet new production requirements.
Huiyao Laser Technology (Luoyang) Co., Ltd. is a high-tech enterprise focusing on the research, development, manufacturing and sales of equipment in the new energy industry. Relying on the support of scientific research institutions such as the Luoyang Research Institute of Dalian University of Technology, the company has built a highly skilled R&D team dedicated to providing customers with comprehensive laser welding equipment, battery cell assembly line equipment, module PACK automatic line equipment, and battery structural parts automation. equipment and other high-end smart equipment.
The company covers an area of more than 10,000 square meters, has multiple automated production lines and advanced processing equipment, and has IS09001 quality management system certification and ISO14001 environmental management system certification. The company actively promotes standardized production models, improves product quality management and after-sales service guarantees, and is committed to providing customers with reliable products and high-quality services.
