Seal structure of vanadium battery

Abstract

The invention relates to the technical field of vanadium batteries, in particular to a seal structure of a vanadium battery. The seal structure comprises a steel-structure clamp plate, a screw rod, a nut, a flow channel side plate and a spring. Compared with the prior art, the seal structure is characterized in that a built-in spring structure is designed, and the spring is arranged between the flow channel side plate and the steel-structure clamp plate; when the nut locks electric pile components, the spring cooperates to achieve compression, so that energy is stored in the spring, and the spring releases energy in assembled electric piles, and generates constant squeezing action on the electric piles, thereby increasing the sealability between the electric pile components, and avoiding leakage to each other. Furthermore, as the extrusion force is enough, the phenomenon that the middle electric pile component sinks when a plurality of electric pile components are assembled is also avoided, and thus the phenomenon of electric discharge due to mutual leakage of positive and negative liquid phases resulting from relative displacement of flow channel holes is avoided.

Description

technical field [0001] The invention relates to the technical field of vanadium batteries, in particular to a sealing structure of vanadium batteries. Background technique [0002] At present, the structure of vanadium batteries generally adopts external springs, and its structure can be found in figure 1 , The spring 4 is sleeved on the screw rod 2, one end of the spring 4 is in contact with the steel structure splint 1, and the other end of the spring 4 is in contact with the nut 3. When the electric stack is assembled, the spring 4 is compressed together with the components in the electric stack, and each component of the electric stack is compressed by the spring 4 . However, no matter how compressed the spring 4 is, there is a certain space for expansion and contraction. The spring 4 cannot be completely locked by the nut 3, and the spring 4 is deformed. A case of leakage occurs between the membranes 8 . In addition, if multiple sets of stack components are used to a...

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Problems solved by technology

However, no matter how compressed the spring 4 is, there is a certain space for expansion and contraction. The spring 4 cannot be completely locked by the nut 3, and the spring 4 is deformed. In case of leakage between membranes 8

In addition, if multiple sets of stack components are used to assemble, the middle stack components will sink downward, resulting in misalignment of the flow channel holes of each component, and it is more likely to mix positive and negative liquids, resulting in discharge and system failure.

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