Reversible fuel cell-based high-capacity power energy storage device

Abstract

The invention discloses a reversible fuel cell-based high-capacity power energy storage device which comprises an AC / DC (Alternating Current / Direct Current) converting system, a reversible fuel cell system, a DC / AC converting system, a control system, a hydrogen storage system, an oxygen storage system and a water storage system. The electric energy is converted into chemical energy pure hydrogen and pure oxygen in an electrolysis running mode of the reversible fuel cell system, and the pure hydrogen and pure oxygen are respectively stored in the hydrogen storage system and the oxygen storage system; The stored hydrogen and oxygen are converted from chemical energy into electric energy in a power generation running mode of the reversible fuel cell system at the grid load peak time and combined into the grid by the DC / AC converting system. The product water in the running process of the whole energy storage device is stored into the water storage device, and the water consumed in the electrolysis running mode and water generated in the power generation running mode can be recycled. The invention realizes the energy conversion of electric energy and chemical energy under different demands and has the characteristics of high capacity, low cost, long service life and simple structure.

Description

technical field [0001] The invention belongs to the field of electric energy storage, and particularly relates to a reversible fuel cell energy storage technology, which realizes large-scale storage of electric energy through a reversible hydrogen / oxygen fuel cell, a hydrogen storage and oxygen storage system and a control system, and specifically relates to a reversible fuel cell based large-capacity power storage device. Background technique [0002] Energy is an important material basis for the survival and development of human society, and an important cornerstone for national economy, national security and sustainable development. 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. Under the dual pressure of energy security and environmental protection, the development and utilization of renewable energy, incl...

AI Technical Summary

Problems solved by technology

However, renewable energy such as wind energy and solar energy are greatly affected by weather and time periods, and are typical random and intermittent power sources. It is necessary to develop and build corresponding electric energy storage devices or energy storage power stations to ensure the power generation and power supply of renewable energy. continuity and stability

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