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Online gas detection method used for all vanadium flow battery liquid storage tank

An all-vanadium redox flow battery and detection method technology, applied in fuel cells, electrical components, regenerative fuel cells, etc., can solve problems such as air-sensitive ion oxidation, maintain comprehensive valence balance, avoid gas waste, and reduce The effect of overhaul operation and maintenance cost

Active Publication Date: 2016-12-21
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +1
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Problems solved by technology

However, it does not solve the problem of oxidation of air-sensitive ions in the electrolyte by gas generated during operation

Method used

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  • Online gas detection method used for all vanadium flow battery liquid storage tank

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Embodiment 1

[0019] Example 1, see figure 1 :

[0020] The invention provides an online gas detection method for a liquid storage tank of an all-vanadium redox flow battery. An online gas detection system is arranged on the liquid storage tank. The gas in the liquid storage tank is detected and analyzed to obtain the gas composition information in the liquid storage tank, so as to accurately control the amount of protective gas; when the battery is running, the gas state in the liquid storage tank is detected in real time. If ion-sensitive gases in the electrolyte are detected When components are used, an inert gas should be introduced in time for protection.

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Abstract

The invention provides an online gas detection method used for an all vanadium flow battery liquid storage tank. The liquid storage tank is provided with an online detection system, and a gas in the tank is detected and analyzed when an inert gas is introduced to dispel air in the liquid storage tank to obtain component information of the gas in the liquid storage tank in order to accurately control the use amount of a protection gas; and the state of the gas in the liquid storage tank is detected in real time in the battery running process, and the inert gas is timely introduced when oxygen and other electrolyte ion-sensitive gas components are detected in order to protect and keep comprehensive valence balance of ions in the electrolyte. The gas in the all vanadium flow battery liquid storage tank is detected and analyzed in an online manner through adopting the online gas detection system, so the use amount of the protection gas is accurately controlled, and waste of the production gas is avoided, thereby the building cost of all vanadium flow battery energy storage power stations is reduced, the vanadium battery is well protected, the running efficiency of the battery is improved, the service life of the battery is prolonged, the running cost is reduced, and the running economy of the energy storage power stations is improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to an online gas detection method for a liquid storage tank of an all-vanadium redox flow battery. Background technique [0002] All-vanadium redox flow battery is a new type of large-capacity energy storage battery, which has the advantages of high energy conversion efficiency, safe operation, independent design of power and capacity, long service life, and environmental friendliness. The supplement of the device has broad application prospects in the fields of new energy access and smart grid construction. [0003] The all-vanadium redox flow battery uses vanadium ion solutions with different valence states as the active materials of the positive and negative electrodes respectively, and stores them in their respective electrolyte storage tanks. The positive electrode electrolyte is the sulfuric acid solution of V (V) and V (IV), and the negative electrode electrolyte is the V ...

Claims

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Application Information

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IPC IPC(8): G01N33/00H01M8/18
CPCG01N33/0004H01M8/188Y02E60/50
Inventor 李爱魁王茜王伟马军李广磊
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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