Membrane module, flow battery unit and battery stack

A liquid flow battery and membrane module technology, applied in fuel cells, battery pack components, regenerative fuel cells, etc., can solve problems such as uneven distribution of electrolyte, improve service life, reduce pressure head loss, and reduce flow resistance Effect

Active Publication Date: 2012-05-30
ENN SCI & TECH DEV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the technical problem of uneven distribution of electrolyte in the working area of ​​the battery in the prior art, the present invention provides a membrane module, a flow battery unit and a battery stack including the membrane module, and the membrane module can be used to Make the res

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  • Membrane module, flow battery unit and battery stack
  • Membrane module, flow battery unit and battery stack
  • Membrane module, flow battery unit and battery stack

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[0032] Although the present invention will be fully described with reference to the accompanying drawings containing preferred embodiments of the present invention, it should be understood that those of ordinary skill in the art can modify the invention described herein while obtaining the technical effects of the present invention. Therefore, it should be understood that the above description is a broad disclosure for those of ordinary skill in the art, and its content is not intended to limit the exemplary embodiments described in the present invention.

[0033] figure 1 It is a schematic cross-sectional view showing a flow battery cell 100 according to an exemplary embodiment of the present invention. Such as figure 1 As shown, the flow battery unit 100 according to the present invention includes: two electrode plates 2, each of which is provided with a ring-shaped electrode frame 21 on the outer edge; made of, for example, polyacrylonitrile-based material or viscose-based mate...

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Abstract

The invention discloses a membrane module which can be applied to a flow battery unit. The membrane module comprises two frame bodies, multiple supporting pieces and membranes, wherein each frame body comprises a border part and a hollow part defined by the border part, at least one through hole through which liquid flows is arranged on the border part, first sides of the two border parts are arranged oppositely, second sides of the two border parts which are opposite to the first sides are respectively provided with at least one liquid flow groove extending from the through hole to the hollow part; the supporting pieces penetrate through the hollow parts in the first direction and are connected to the border parts; and the membranes can be maintained in the hollow parts of the two frame bodies by the supporting pieces. The invention also provides a flow battery unit containing the membrane module and a battery stack. By adopting the membrane module, electrolyte flowing in the membranes can be more evenly allocated, the internal resistance of the flow battery unit can be reduced and the service life of the membranes can be improved.

Description

technical field [0001] The present invention relates to a liquid flow battery, in particular to a membrane assembly, a flow battery unit and a battery stack including the membrane assembly. Background technique [0002] At present, with the intensification of energy shortage and environmental degradation, as an energy storage device, flow batteries have been widely used due to their long life, high reliability, and low operation and maintenance costs. In particular, an all-vanadium redox flow battery has been developed, which does not cause cross-contamination of positive and negative electrolytes, and vanadium ions are more suitable for high-current fast charging and discharging. All-vanadium redox flow batteries generally include end plates, bipolar plates, separators, electrode materials, electrode frames, sealing materials, etc. [0003] Chinese patent application number CN200910157588.0 discloses an integrated device for flow batteries, including negative electrode flo...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M2/18H01M8/18H01M8/24H01M8/0258H01M8/0273H01M8/2483
CPCY02E60/12Y02E60/528Y02E60/50
Inventor 张祺汪国庆
Owner ENN SCI & TECH DEV
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