Novel large-scale power energy storage device

Abstract

The invention discloses a novel large-scale power energy storage device, which belongs to the technology of electrochemical energy storage. The device mainly comprises an electrolytic hydrogen making system, a hydrogen storage system, an oxygen storage system, a water system, an alkaline fuel cell power generation system, an alternative current (AC) / direct current (DC) conversion system, a direct current (DC) / alternative current (AC) conversion system and corresponding control systems, wherein the electric energy is directly converted to be chemical energy which is stored in the hydrogen and oxygen storage systems respectively; at the peak of power grid load, the stored hydrogen and oxygen convert the chemical energy into electric energy directly by the alkaline fuel cell power generation system for supplying electricity; and the water consumed by the whole device in the electrolytic process can be recycled through the water generated in the power generation process of the fuel battery. The large-scale power energy storage device provided by the invention has the advantages of large capacity, long service life, low cost, environmental friendliness and the like; and the technologies of the main component parts are more mature, so that the device has an extremely broad application prospect in the electrical field.

Description

technical field [0001] The invention belongs to the field of power energy storage, and relates to an electrochemical energy storage technology for realizing power storage through electrolysis of water hydrogen production system / hydrogen storage and oxygen storage system / fuel cell power generation system, in particular to a novel large-scale power storage device. Background technique [0002] With the rapid growth of the national economy, the demand for energy is increasingly strong, and the problems of energy shortage and environmental pollution caused by fossil energy are becoming increasingly acute. New energy resources have great potential and can be used sustainably. They have played an important role in meeting energy demand, improving energy structure, reducing environmental pollution, and promoting economic development, and have attracted widespread attention from the international community. Under the dual pressure of energy security and environmental protection, ren...

AI Technical Summary

Problems solved by technology

Due to the unpredictability of wind power and solar power generation, it is impossible to adjust the power supply according to the actual power load demand. At present, it is necessary to adapt to the requirements of grid-connected power generation through the adjustment of fossil energy power generation, making it difficult for new energy power generation to become the main power source. It is used as an auxiliary power source; secondly, the instability of wind power and solar power makes its large-scale grid-connected power generation have a great impact on the safe and stable operation of the power grid and many other aspects

These have become major obstacles restricting the large-scale development of wind power and solar power generation

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