Facilities and Equipment
Lithiumstart's headquarters is located in South San Francisco, in the heart of California’s vibrant high tech corridor. The headquarters houses the main Engineering group including R&D and QA functions, as well as the Sales and Finance groups. The main 9,000 sq. ft. lab facility in South San Francisco is ITAR compliant and used for military and other sensitive customer programs and all internal R&D activity. The lab is designed for rapid prototyping and features an extensive suite of tools and equipment.
High Speed Robotic Laser Welding
Lithiumstart's signature production process uses a 3 axis high speed robotic laser welding system designed in-house to allow high current capable copper and aluminum cell tab welding. The system allows for precise, consistent, strong and high reliability joints, and uses a proprietary process involving mechanical fixation, laser pulse shaping and shield gas mixes to achieve aerospace grade welds. The copper and aluminum tabs allow cells to perform to their full potential particularly in pulse power applications with high currents. Typical resistance welding technologies often allow only for nickle tab welding (which cannot sustain high currents), and are inherently less reliable due to variation in electrode wear patterns. The robotic laser system is currently deployed on three assembly lines and can complete welding on a 1kw sized cylindrical pack in less than 5 minutes.