Control system for all-vanadium redox flow energy storage cell stack

Abstract

The invention provides a control system for an all-vanadium redox flow cell stack. The cell stack comprises a plurality of tandem all-vanadium redox flow monocells; a positive electrolyte storage tank and a negative electrolyte storage tank are provided out of the cell stack and respectively deliver electrolyte into the monocells through a positive electrolyte inlet pipeline and a negative electrolyte inlet pipeline. The control system comprises a master controller unit, sensors, a data acquisition unit, an execution unit and fluid pumps, wherein, the sensors measure real time working parameters of the cell stack during reaction, the data acquisition unit converts the real time working parameters into data signals and sends the data signals into the master controller unit, the master controller unit carries out logical operation on the data signals and outputs control signals to the execution unit, the execution unit drives the fluid pumps to work, and there are two fluid pumps which are respectively arranged on the positive electrolyte inlet pipeline and the negative electrolyte inlet pipeline and respectively control the flow of positive electrolyte and negative electrolyte. The system reliably guarantees that the cell stack operates safely and smoothly and fulfills ideal cell performance.

Description

technical field [0001] The invention relates to a chemical energy storage battery, in particular to an all-vanadium redox flow battery stack control system. Background technique [0002] Electric energy is the most important and indispensable secondary energy in the information society, and it is the guarantee for sustainable economic development and social progress. Renewable energy sources such as wind, solar and tidal power are considered to be effective sources of future electricity and are gaining increasing attention worldwide. In order to ensure the stable power supply of the renewable energy power generation system, it should be regulated by means of electric storage and energy storage. All-vanadium redox flow battery (referred to as vanadium battery) is a new type of green energy storage battery. It has many advantages such as high current charge and discharge resistance, easy capacity adjustment, instant charging, and long life. Therefore, it is used in stationary...

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Problems solved by technology

However, there is no such an effective control system at present, which seriously affects the practicability and industrialization process of vanadium battery stacks.

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