FLOWSCALE, led by Pinflow, moved flow-battery technology from research hardware toward industrial production. The project developed technologies for manufacturing low-cost, reliable redox flow battery stacks, tools for accurate, semi-automatic stack assembly based on internal frames with integrated bipolar plates, and tools for rapid testing of battery materials and components.
The main goal was a modular battery platform combining 2–10 stacks, designed as the building block for stationary storage systems from hundreds of kilowatts to megawatts.
Results
- Industrial flow-battery stack: a prototype with an active area of 1,175 cm² for 10–60 cells, with pressure losses outside the active area cut by about 80 % and less than 5 % variation in resistance between cells.
- Injection-moulded flow plate: a functional sample with an active area of 608 cm², mouldable from PVC, PVDF or PE for electrolytes of different aggressiveness.
- Multi-stack battery module: a prototype for up to 10 stacks connected in series or parallel, with pumps, sensors and power converters.
- Injection-mouldable bipolar plate with up to 67.5 % graphite, developed with Plastikářský klastr.
- Research stack with an active area of 608 cm² and accessible cell contacts, in 20- and 40-cell versions.
The project was completed in December 2025. The evaluation committee concluded that it succeeded as planned and that the planned results reached the expected technical parameters.
Consortium
Pinflow coordinated the project together with the New Technologies Research Centre of the University of West Bohemia in Pilsen and Plastikářský klastr (Plastics Cluster).