Control method of flow battery

Abstract

The invention provides a method for controlling a flow battery. The method comprises the following steps: determining real-time volume and flow rate of electrolyte of the flow battery; judging whether the real-time volume and flow rate are equal to preset volume and flow rate of the electrolyte; controlling the flow battery to continue to work when the real-time volume and flow rate are equal to the preset volume and flow rate; otherwise, replacing the preset volume and flow rate by the real-time volume and flow rate. According to the method, the determined real-time volume and flow rate are compared with the preset volume and flow rate, if the determined real-time volume and flow rate are equal to the preset volume and flow rate, the flow battery continues to work, otherwise the preset volume and flow rate is replaced into the real-time volume and flow rate. Therefore, the charging and discharging control parameters of the flow battery can be gradually close to the volume and flow rate needed during actual operation of the flow battery, so that a control scheme of the flow battery is optimized, and a phenomenon that concentration polarization exists in the flow battery during charging and discharging is further reduced.

Description

technical field [0001] The present invention relates to the field of control, and more specifically, to a control method for a liquid flow battery. Background technique [0002] At present, in order to slow down the phenomenon of concentration polarization, the porous electrode of the flow battery is set as an asymmetric structure, so that the cross-sectional area of ​​the inlet end of the electrolyte of the porous electrode is larger than the cross-sectional area of ​​the outlet end of the electrolyte, so that the electrolytic The linear velocity of the liquid passing through the inlet end of the porous electrode is lower than the linear velocity at the outlet end, thereby slowing down the uneven reaction rate of the flow battery due to the concentration of the electrolyte solution at the inlet end being greater than the concentration of the electrolyte solution at the outlet end. [0003] However, the above-mentioned improved method can only alleviate the phenomenon of con...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a control method for a flow battery to solve the problem of concentration polarization in the prior art when charging and discharging the flow battery

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