Acid-base regulation and control system of zinc-bromine flow battery and working method of acid-base regulation and control system

Abstract

The invention discloses an acid-base regulation and control system of a zinc-bromine flow battery and a working method thereof. The acid-base regulation and control system comprises a zinc-bromine flow battery module, a salt making module, a chlor-alkali module and an acid making module. The zinc-bromine flow battery stack is provided with three liquid storage tanks in total, electrolytes with different acidity and alkalinity are stored in the tanks respectively, and according to different working states of the stack, a control platform enables the liquid storage tanks to selectively supply liquid to the stack through automatic control equipment such as an automatic regulating valve and an infusion pump. During working, the zinc-bromine flow battery module supplies power to other modules, and meanwhile, a product obtained after the electrolyte used by the zinc-bromine flow battery stack is treated by other modules can perform acid-base regulation and control on the stack. The three storage tanks and the selective liquid supply can realize low-voltage charging and high-voltage discharging of the galvanic pile of the zinc-bromine flow battery, and the charge-discharge performance, the energy density, the power density and the like of the galvanic pile are greatly improved. The method has wide application prospects in the fields of power grid peak regulation and frequency modulation, renewable energy storage, centralized energy storage, distributed energy storage and the like.

Description

technical field [0001] The invention relates to the technical field of zinc-bromine liquid flow batteries, in particular to an acid-base regulation system of zinc-bromine liquid flow batteries and a working method thereof. Background technique [0002] The limited fossil energy cannot meet the needs of the rapid development of human social productivity, and the excessive use of fossil energy has also led to serious environmental pollution. At present, all countries are stepping up to optimize the energy structure, getting rid of the dependence on fossil energy, and increasing the proportion of renewable energy consumption in the power system are the main energy strategies of each country. However, renewable energy, such as wind energy, solar energy, geothermal energy, etc., is easily affected and restricted by factors such as climate, environment, geography, etc., and has strong fluctuation and intermittency, and the generated electric energy cannot be directly connected to ...

AI Technical Summary

Problems solved by technology

However, it should be noted that, limited by the inherent constraints of the battery charging and discharging process, the charging voltage of the zinc-bromine flow battery will also be significantly increased after using this strategy, which will increase the battery’s requirements for power input and renewable energy generation. Burden, not conducive to commercial use

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