The production process of automotive power battery packs is designed based on intelligent manufacturing principles, using MES system to manage production plans, combined with fully automatic and semi-automatic processes, to achieve efficient production, controllable quality, and full traceability. The core process can be divided into three stages, with specific process steps and characteristics as follows:
1、 Module production stage
Raw material transportation and pretreatment
The AGV system automatically transports raw materials to the loading area according to the MES production plan and cleans foreign objects in the battery box to ensure a clean initial assembly environment.
Assembly of high-voltage components
At the high-voltage cable and component installation station, the high-voltage cables and components are accurately installed to the designated location of the battery box through automated equipment to ensure the reliability of electrical connections.
BMC/LMC assembly
The semi-automatic workstation completes the installation of BMC (Battery Management System Control Module) and LMC (Low Voltage Management Module), combined with manual verification to ensure accurate module positioning.
2、 Battery pack assembly stage
Module positioning and fixation
The fixed workstation uses an automatic lifting system to lift the battery module to the appropriate position, achieving precise positioning and mechanical fixation, and improving assembly efficiency.
Installation and organization of wiring harness
The wiring harness installation and sorting station completes the wiring harness wiring, fixing, and sorting, ensuring that the electrical path is standardized and avoiding signal interference or short circuit risks.
Semi-finished product inspection
Test key indicators such as pulse charging and discharging performance, equipment functional correctness, etc., identify potential defects in advance, and ensure the quality of semi-finished products.
Sealing and Cover Plate Installation
The adhesive coating process ensures sealing, and the cover plate forms a closed structure after installation to prevent external impurities from entering and protect internal components.
3、 Finished product inspection and traceability
Finished product quality verification
Insulation performance testing and airtightness testing ensure that the battery pack meets safety standards and prevents the risk of electrical or environmental leakage.
Full process data management
The MES system collects real-time team, equipment, raw material batches, production processes, and quality inspection data to achieve dynamic monitoring of production and quality status.
Through raw material batch information, the entire product lifecycle can be traced, including the source of raw materials, production processes, and quality inspection records, supporting quality traceability and problem traceability.
Process characteristics and advantages
Integration of automation and semi automation: Key processes such as AGV conveying and module installation adopt fully automated technology, while auxiliary processes such as BMC/LMC assembly combine manual operation to balance efficiency and flexibility.
Intelligent production management: MES system integrates production planning and scheduling, data collection and analysis, supporting real-time decision-making and process optimization.
Quality and Traceability: The entire process data is automatically summarized and analyzed, combined with batch traceability function, to ensure controllable product quality and traceable problems.
Balance between performance and manufacturability: Automatic plug-in module technology and semi-automatic battery pack technology balance product performance requirements and production feasibility, reducing labor costs while improving manufacturing accuracy.
This process route achieves efficient, reliable, and sustainable production of automotive power battery packs through intelligent, automated, and data-driven design, which is in line with the development trend of intelligent manufacturing and meets the strict requirements of the industry for quality, cost, and traceability.
