Flat plate type redox flow battery

Abstract

The invention provides a flat plate type redox flow battery, which comprises electrolyzers, a reaction electrode, power supply electrodes and a separating membrane and is characterized by being formed by stacking an upper side power supply electrode, an upper side electrolyzer, the separating membrane, a lower side electrolyzer and a lower side power supply electrode sequentially from top to bottom, wherein each electrolyzer is divided into four electrolytic chambers which are arranged into a shape like Chinese character 'TIAN' by an electrolytic frame; two pairs of positive reaction electrodes and negative reaction electrodes are arranged in the four electrolytic cambers of the upper side electrolyzer in a crossed manner; two pairs of positive reaction electrodes and negative reaction electrodes of which the polarities are opposite to the polarities of a corresponding position of the upper side electrolyzer are arranged in the lower side electrolyzer; the positive reaction electrodesand the negative reaction electrodes are contacted with the power supply electrodes respectively and connected in series with one another according to the opposite polarities so as to form a circuit;and the electrolytic chambers in the electrolyzers are connected with one another through pipelines according to the same polarity. In the invention, battery units are arranged in a manner of a flat plate, so liquid complexing current can be reduced, the reliability of the battery is improved and the free degree of the arrangement is increased.

Description

technical field [0001] The present invention relates to a redox flow battery, in particular to a structure of a flat-plate redox flow battery. Background technique [0002] Generally, redox flow batteries have generally adopted a method of stacking battery cells in series to obtain the required voltage. However, due to the low electromotive force of each battery cell in redox flow batteries, it is necessary to allow It is best to use interlayer bipolar plates for electrolyte circulation. [0003] The most important thing in this method is the solution of liquid junction and liquid leakage. [0004] The so-called liquid junction means that there is a potential difference between the electrolyte solution flowing into or out of the battery cell and other battery cells, so that the current is short-circuited through the electrolyte solution. [0005] For example, when 40 battery cells are connected in series, the potential difference generated in the initial stage of the stack...

AI Technical Summary

Problems solved by technology

[0006] In order to control the combined current of this liquid to a minimum, the method of making the diameter of the infusion tube thinner or longer is adopted, but the disadvantage of these methods is that it will increase the infusion resistance of the electrolyte circulation pump and increase the overall power consumption. volume increase

[0007] In addition, due to the possibility of liquid leakage due to the multi-layer stacking of battery cells, it is necessary to take countermeasures to periodically tighten the screws

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