Project Overview
TOBGROUP designed and implemented a Na-ion battery lab line to enable experimental-scale production of cylindrical and pouch Na-ion batteries. The facility was developed to support multiple cell formats, including 18650S (1.3Ah), 32138S (10Ah), and 32140S (10Ah), with flexible adaptation for other research formats. The project covered the full laboratory workflow from slurry preparation, electrode coating, calendering, cutting, and slitting to winding, cell assembly, electrolyte filling, sealing, and capacity sorting.
The Na-ion battery lab line was optimized for small-scale production ranging from 10 to 500 cells per day, providing researchers with the flexibility to perform detailed experiments while maintaining consistent quality. TOBGROUP engineers implemented modular equipment selection to allow scaling from small 100 m² labs up to 10,000 m² pilot facilities depending on experimental or pre-pilot production needs. Each equipment station was carefully calibrated for precision, ensuring high reproducibility in electrode thickness, cell alignment, and capacity testing.
Safety, environmental compliance, and ease of use were key priorities. All equipment of the Na-ion battery lab line was compatible with Na-ion chemistries, particularly Prussian Blue cathode materials, and designed for laboratory-standard environmental controls. Operators can quickly switch between different cell formats while retaining process consistency. TOBGROUP provided full technical support, including material supply, process documentation, and operator training, ensuring that the client can reliably execute research protocols and generate reproducible data for scale-up projects.
This project demonstrates TOBGROUP’s expertise in delivering experimental battery production lines with high technical fidelity, flexibility for multiple chemistries, and full lifecycle support from equipment selection to consumable supply. The lab line forms the foundation for R&D and pre-pilot development of Na-ion battery technologies, enabling the client to accelerate innovation and validate next-generation battery chemistries under controlled conditions.
Ⅰ. Clients Requirement
The client required a versatile Na-ion battery lab line capable of producing multiple cylindrical and pouch cell formats. Key requirements included precise capacity targets, Prussian Blue cathode material compatibility, reproducible winding processes, daily production flexibility, and a facility size scalable to experimental and pre-pilot needs.
| Parameter Category | Specific Requirements |
| Battery Types | Na-ion Cylindrical Cell: 18650S, 32138S, 32140S |
| Cell Size | 18650, 32138, 32140 |
| Nominal Capacity | 1.3Ah (18650S), 10Ah (32138S/32140S) |
| Material Systems | Prussian Blue cathode |
| Key Process Steps | Slurry mixing → coating → calendering → cutting → slitting → winding → assembly → electrolyte filling → sealing → sorting → testing |
| Daily Production Capacity | 10–500 cells/day |
| Facility Area | 100–1,000 m² depending on production volume |
Ⅱ. TOBGROUP Solution
TOBGROUP delivered a turnkey Na-ion battery lab line integrating modular equipment for precise, reproducible cell production. The solution included slurry preparation, coating, winding, assembly, and testing systems. Full technical support, consumable supply, and operator training ensured reliable operation, scalability, and flexibility for experimental and pre-pilot production.
| Solution Area | Implementation Details |
| Slurry Preparation | Twin-screw mixer with vacuum degassing for uniform Prussian Blue slurry |
| Electrode Processing | Coating machine, calendering, cutting, and slitting stations with precise thickness and dimension control |
| Cell Assembly | Winding machine for cylindrical cores, assembly line for cell packaging |
| Electrolyte Filling & Sealing | Automated filling and sealing machines ensuring controlled electrolyte volume and airtight sealing |
| Testing & Sorting | Capacity and internal resistance sorting, integrated testing system for reproducible lab-scale data |
| Scalability | Modular layout enables expansion from 100 m² to 10,000 m² laboratory or pilot facility |
Ⅲ. Equipment & Materials List
The Na-ion battery lab line is equipped with precision machines covering the full Na-ion battery experimental workflow. Each station ensures reproducibility, quality, and flexibility. Equipment includes mixers, coating machines, calendering, cutting, slitting, winding, assembly, filling, sealing, sorting, and testing devices, providing complete support for R&D and experimental production.
| Name | Process | Quantity |
| Mixer | Slurry mixing | 1 set |
| Coating Machine | Electrode coating | 1 set |
| Calender | Electrode compression | 1 set |
| Cutting Machine | Electrode cutting | 1 set |
| Slitting Machine | Slitting to electrode size | 1 set |
| Winding Machine | Electrode and separator winding | 1 set |
| Assembly Line | Cell assembly into casing | 1 set |
| Electrolyte Filling | Electrolyte injection | 1 set |
| Sealing Machine | Cell sealing | 1 set |
| Sorting Machine | Capacity and internal resistance sorting | 1 set |
| Testing Equipment | Cell performance testing | 1 set |
