Abstract: The present disclosure relates to electrochemical energy storage systems. In particular, the present disclosure relates to particular systems and methods for providing a compact framework in which to house an electrochemical energy storage system. Various embodiments of electrochemical energy storage systems are disclosed that include a flow manifold and a flow manifold cover. The flow manifold may provide a plurality of channels for distributing liquid reactant to an electrical cell stack. The flow manifold may be utilized in conjunction with a flow manifold cover. The flow manifold cover may be configured to support a variety of components of a liquid reactant distribution system. Such components may include liquid reactant pump motors, inlet and outlet ports, a reference cell, and a variety of sensors. The distribution of liquid reactants to the cell stack from the inlet and outlet ports may be accomplished by way of the flow manifold cover.

Abstract: A reactor assembly for a redox flow battery system is disclosed. The reactor assembly may include a plurality of outer frames, a plurality of inner frames, and a rib and channel interlock system integrated in the plurality of outer frames and the plurality of inner frames. In certain embodiments, the rib and channel interlock system may be configured to create a plurality of seal systems enclosing an outer circumference of an electrolyte compartment when the plurality of outer frames and the plurality of inner frames are compressed together in a stack configuration.