Patent ID: 9017869
Filing Date: 2015-04-28
Classification: H01M,Y02E

Abstract:
1. A redox flow battery including a stack body in which a cell frame, electrodes and a membrane are stacked in layers, the redox flow battery comprising: end plates arranged at both ends of the stack body; and a holding member including a clamping mechanism for holding the stack body in sandwich relation between the both end plates, wherein the cell frame comprises a frame and a bipolar plate integrated with the frame, the electrodes are put into close contact with the bipolar plate by a clamping force of the clamping mechanism without using adhesive, the clamping mechanism comprises rod-like members used for holding the stack body in sandwich relation between the end plates, the rod-like members are provided on outside of the stack body, the holding member further includes an out-of-position preventing plate of the cell frame interposed between the stack body and the rod-like members to prevent at least a part of cell frames from being moved out of position, at least a surface of the out-of-position preventing plate comprising an insulating material, a manifold is formed on the frame of the cell frame, the frame has an circulation portion comprising an electrolyte guide groove extending from the manifold and a rectifying portion for allowing the electrolyte fed from the guide groove to diffuse along an edge of the electrodes, and the cell frame has a protection plate that covers the guide groove and the rectifying portion.