Modular Flow Battery Stacking for Scalable Energy Storage

The patent transitions from horizontal expansion to vertical stacking by configuring electrolyte containers and battery stacks in a stacked arrangement. Multiple electrolyte containers are positioned vertically above and below the battery stack container, allowing energy storage capacity to scale in the vertical dimension rather than requiring additional lateral space. This dimensional shift resolves the contradiction between increasing capacity and minimizing footprint.

The patent implements a nested configuration where electrolyte containers are vertically stacked around and above/below the central battery stack container. The containers are arranged in a compact vertical hierarchy, with the battery stack container at the core and electrolyte containers nested in vertical layers. This nesting approach maximizes space utilization and enables capacity expansion without proportional increases in lateral area.

The patent divides the flow battery system into modular, independently configurable components: a central battery stack container and multiple detachable electrolyte containers. Each electrolyte container can be independently connected or disconnected via reversible coupling mechanisms, allowing the system to be segmented into functional units. This segmentation enables scalable configuration without requiring complex integrated designs, as modules can be added or removed based on energy storage requirements.

The patent designs universal connection interfaces and standardized coupling mechanisms that allow the same battery stack container to work with varying numbers of electrolyte containers. The reversible coupling system provides multi-functional adaptability, enabling the configuration to be adjusted for different energy storage capacities while maintaining a consistent base architecture. This universality reduces complexity by using standardized components rather than custom configurations for each scale.

The patent implements passive safety features where the nitrogen blanket system provides automatic protection without requiring active control or monitoring. The nitrogen-filled headspaces in electrolyte containers automatically prevent oxygen ingress and potential combustion hazards, functioning as a self-service safety mechanism. Similarly, leak detection systems are integrated into the container design, with sensors that automatically detect and signal leaks without requiring external monitoring infrastructure. These self-service approaches improve safety while minimizing added complexity.

The patent incorporates nitrogen blankets in the headspaces of electrolyte containers as a preventive safety measure. The nitrogen atmosphere is established beforehand to displace oxygen and prevent combustion before any potential leaks or hazards occur. This prior cushioning approach proactively mitigates safety risks by creating an inherently safer environment, rather than requiring complex active safety systems to respond to hazards after they arise.