An all-vanadium redox flow battery energy storage power optimization distribution control method

Abstract

The invention discloses an all-vanadium redox flow battery energy storage power optimization distribution control method, which comprises the following steps: using a heat exchange fluid different from the electrolyte of the all-vanadium redox flow battery to indirectly obtain and / or distribute all-vanadium redox flow battery The electrolyte heat of the vanadium redox flow battery, so that the heat from the electrolyte is provided to the heat utilization mechanism, and the heat is directly used as a primary energy source to heat the corresponding production object in the heat utilization mechanism; the all-vanadium liquid The electricity generated by the flow battery is provided to the heat utilization mechanism, so that the electricity can be directly used for at least one other function of the heat utilization mechanism in a non-converting manner.

Description

technical field [0001] The invention relates to the technical field of battery control and management, in particular to a control method for optimal distribution of energy storage power of an all-vanadium redox flow battery. Background technique [0002] At present, there are many options for energy storage batteries used in industry or large-scale power generation facilities such as wind power and hydropower. Flow batteries such as all-vanadium flow batteries are one of the more popular types of flow batteries. The basic principle of its discharge is to use the oxidation-reduction reaction between several valence states of vanadium ions (divalent, trivalent, tetravalent and pentavalent) to form the flow of electrons to discharge, because the main source of electrical energy is electrolyte, Therefore, the amount of energy that the all-vanadium redox flow battery can provide or store depends on the size of the electrolyte storage volume. During the discharge process of the v...

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Problems solved by technology

[0004] CN 205828544 U utility model patent provides an air-cooled electrolyte temperature controller utilizing a heat conducting plate and a cooling fan, but the disadvantage of using the air-cooling method is that the heat transfer coefficient of the air-cooling is low, and the cooling time is long In addition, affected by the ambient temperature, it is often necessary to introduce auxiliary cooling equipment such as a cold dryer or refrigerant, which increases energy consumption and occupies more space

The CN202651271U utility model patent introduces a water-cooled electrolyte temperature controller utilizing heat conduction pipes and cooling water. The defect of this water-cooling method is that in order to meet the requirements of water-cooling, relatively large equipment such as cooling towers need to be set, and there are The problem that the water cooling effect is greatly reduced when the ambient temperature is too high

The existing technology can also solve the problem of solute precipitation caused by the low temperature of the electrolyte when the vanadium redox flow battery is used in severe cold regions. In addition, the existing technology does not propose to adapt the heat exchanged by the heat exchange fluid to the heat that is required at the same time. Ideas for hatching or breeding devices with electricity

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