Stored energy power generation device based on salt holes, control method and application thereof

Abstract

The invention discloses a stored energy power generation device based on a salt hole, a control method and an application thereof. An organic flow cell comprises two electrolyte storage warehouses, aflow cell pile, an electrolytic tank body, a cell diagram, a circular pipeline and a circulating pump, wherein the electrolyte storage warehouses are formed as salt holes with soluble cavities. An electrolyte is stored in each soluble cavity. The electrolyte comprises an anode active substance, a cathode active substance and a supporting electrolyte. The supporting electrolyte is saturated electrolyte formed in the soluble cavity of the salt hole when the salt hole is formed by a water soluble method. The anode active substance and the cathode active substance are water soluble organic activemolecules. A flow cell pile comprises two pole plates. The electrolyte is supplied circularly in a flowing manner through the circulating pump. The stored energy power generation device based on saltholes not only has the advantages of being low in cost, high in safety performance, stable in charge and discharge performance, high in solubility of active materials, but also can solve the problem of electrochemical energy storage on a large scale, and some waste salt hole resources are fully utilized.

Description

technical field [0001] The invention belongs to the field of energy storage redox flow batteries, and in particular relates to a salt cavern-based energy storage power generation device, as well as a control method and application of the salt cavern-based energy storage power generation device. Background technique [0002] With the rapid development of human economy, the problems of environmental pollution and energy shortage are becoming more and more serious, prompting all countries in the world to widely develop and utilize renewable energy such as wind energy, solar energy and tidal energy. However, these renewable energy sources are discontinuous, unstable, restricted by the geographical environment, and difficult to connect to the grid, resulting in low utilization rate, high rate of abandoning wind and light, and wasting resources. Therefore, it is necessary to vigorously develop efficient, cheap, safe and reliable energy storage technology that can be used in conjun...

AI Technical Summary

Problems solved by technology

However, considering the limited vanadium ore resources and high vanadium ore prices in the world (V 2 o 5 , $20 / kg), the popularization and long-term use of vanadium redox flow batteries are difficult to achieve

Vanadium flow batteries and zinc-bromine flow batteries are traditional flow battery technologies, which have some technical defects: such as self-discharge and low Coulombic efficiency caused by the shuttle effect of active materials between electrodes; corrosive electrolytes are not environmentally friendly and safe Hidden danger

[0005] At present, aqueous liquid flow batteries still face some challenges, such as limited solubility of active materials (organic substances), easy cross-contamination of electrolyte, low operating current density, prone to side reactions of water electrolysis, and complicated actual installation and operation.

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