Vanadium flow cell seal ring and ionic membrane integrated assembly and electric pile

Abstract

The invention relates to a vanadium flow cell seal ring and ionic membrane integrated assembly and an electric pile. The vanadium flow cell seal ring and ionic membrane integrated assembly comprises an ionic membrane and a seal ring which are integrated. The electric pile comprises a first frame plate, a second frame plate and the seal ring and ionic membrane integrated assembly, wherein the first frame plate and the second frame plate are provided with seal ring clamping grooves; the lower end of the seal ring in the seal ring and ionic membrane integrated assembly is installed in the seal ring clamping groove arranged on the first frame plate, and the upper end of the seal ring is protruded out of the end surface of the seal ring clamping groove of the first frame plate; the second frame plate is covered on the seal ring and ionic membrane integrated assembly; and the upper end part of the seal ring is clamped into the seal ring clamping groove arranged on the second frame plate. In the invention, the seal ring and an ionic membrane are directly designed into an integrated structure on the first frame plate and the second frame plate, so that the seal ring and ionic membrane integrated assembly has a better sealing effect, and the phenomena of liquid leakage and mixture of positive liquid and negative liquid are avoided, therefore, the performance of a vanadium battery can be more stable.

Description

【Technical field】 [0001] The invention belongs to the technical field of vanadium redox flow batteries, and in particular relates to an ion-membrane integrated component of a sealing ring of a vanadium redox flow battery and an electric stack made of the ion-membrane. 【Background technique】 [0002] At present, the vanadium redox flow battery stacks in the prior art are composed of at least two stack units, and each stack unit is stacked on top of each other. The vanadium redox flow battery stack includes a first frame plate and a second frame plate. The frame plate, the first frame plate and the second frame plate are provided with sealing ring clamping grooves, the sealing ring clamping groove of the first frame plate is provided with a first sealing ring, and the sealing ring clamping groove of the second frame plate is provided with Another sealing ring, that is, a second sealing ring, is arranged in the sealing ring clamping groove, and an ion membrane is arranged betwe...

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Problems solved by technology

[0002] At present, the vanadium redox flow battery stacks in the prior art are composed of at least two stack units, and each stack unit is stacked on top of each other. The vanadium redox flow battery stack includes a first frame plate and a second frame plate. The frame plate, the first frame plate and the second frame plate are provided with sealing ring clamping grooves, the sealing ring clamping groove of the first frame plate is provided with a first sealing ring, and the sealing ring clamping groove of the second frame plate is provided with Another sealing ring, that is, a second sealing ring, is arranged in the sealing ring clamping groove, and an ion membrane is arranged between the first frame plate and the second frame plate, and the ion membrane is connected with the first sealing ring and the second frame plate. The second sealing ring is split and unconnected, and is fixed by the extrusion of the first sealing ring and the second sealing ring, but the ion membrane is connected to the first sealing ring and the second sealing ring. There is no connection between the sealing rings. The vanadium redox flow battery stack with this installation structure is in a separate shape from the sealing ring and the ion membrane during use, so it is easy to cause liquid leakage and positive and negative liquid stringing, resulting in battery failure. The power of the stack decreases, and it may even cause damage to the battery and make it unable to work

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