EV Specific Processes
Producing electric vehicles requires a different set of tooling, inspection and methodologies to ensure their safety, chief among them related to battery pack production, assembly and inspection.
Cell bonding is the process whereby battery cells are joined through adhesive bonding, reducing vibrations and creating a monolithic structure. This adhesive must be carefully applied, as any air pockets can lead to reduced insulation or even a short circuit in the event of a crash. Precisely automated adhesive application is crucial in this state, ideally one powered by intelligent vision systems.
Battery Cell Stack Reinforcement
Once the battery cells have been bonded, they are still vulnerable, and require structural reinforcement in the event of a crash. This requires securing lateral bracing to the battery stacks, however this can be done through traditional welding, as the stacks are highly heat sensitive. Cold joining and self piercing riveting are the most popular options, ones which can be handled through automated riveting tool cells. Our riveting systems use blow fed in line riveting for speed and minimal downtime.
Mounting and Sealing
With the batteries now bonded, reinforced and thermal paste applied for temperature management, they can be sealed and mounted to the vehicle chassis. The battery packs must be secured to the chassis with precise torque values, such that the packs contact the thermal paste without applying enough pressure to squeeze it out. RōBEX torquing systems are fully automated and designed to meet your needs, with real time
torque and angle measurement, inline track or blow fed, and post
torque inspection within the tool cell.