This multi-layer vacuum hot and cold pressing line is designed for high-precision hot pressing and lamination of flow battery cells and bipolar plates. It supports various flow battery types, including Vanadium, Iron-Chromium, and Zinc-Bromine.
The system addresses critical requirements in flow battery stack manufacturing. It enables thermal bonding and setting of key multi-layer materials such as electrode frames, membrane electrode assemblies, and bipolar plates. All processes are performed within a controlled vacuum environment. The production line integrates three core functions: vacuum degassing, high-temperature hot pressing, and rapid cooling.
PRODUCT DESCRIPTION
1. Multi-Layer Simultaneous Pressing for High Productivity
●Multi-Layer Platen Design: The system features a multi-layer platen structure, allowing multiple cells or bipolar plates to be stacked and pressed in a single cycle. This increases production efficiency several times over compared to single-layer equipment.
●Precise Layer-to-Layer Spacing: Ensures uniform pressure distribution across every layer, preventing electrode deformation caused by uneven compression.
2. Vacuum Hot Pressing for Defect-Free Lamination
●High-Vacuum Environment: Hot pressing is performed within a chamber reaching vacuum levels of -98 kPa or lower. This completely removes residual air from the lamination interfaces.
●Bubble Elimination: Effectively prevents common defects found in traditional hot pressing, such as localized resin starvation, bulging, and increased interfacial resistance caused by trapped air. This ensures uniform ionic conduction within the cell.
3. Rapid Cooling with Integrated Heating & Cooling
●Built-In Cooling System: After hot pressing is complete, there is no need to transfer materials. Cooling medium flows directly through the platens for rapid temperature reduction and setting.
●Shape Retention & Stress Management: Rapid cooling locks in the internal stress state of polymer materials, reducing shrinkage and deformation during the transition from high to ambient temperature. This ensures electrode plate flatness can be controlled within ±0.1 mm.
4. Precision Temperature & Pressure Control
●Multi-Zone Temperature Control: Utilizes PID intelligent temperature control modules with accuracy up to ±1.5°C. This ensures a uniform temperature field across the pressing area, preventing localized overheating or underheating.
●Servo-Controlled Pressure: Equipped with a high-precision servo-hydraulic system for excellent pressure control accuracy and holding stability. It adapts well to flow battery materials of varying thicknesses and compositions.
5. Automated Production
●Automated Material Handling: Configured with automatic feeding and unloading manipulators to reduce manual intervention and minimize the risk of contamination.
●MES Integration: Reserved data communication interfaces allow real-time uploading of process parameters such as temperature, pressure, and time, enabling full production traceability.
●Vanadium Flow Batteries: Sealing and lamination of electrode frames and bipolar plates within the stack.
●Iron-Chromium Flow Batteries: Hot pressing and setting of membrane electrode assemblies.
●Zinc-Bromine Flow Batteries: Lamination of microporous separators with electrodes.
●Research Institutions: Experimentation and pilot production of new materials and processes for flow battery technology.
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