Vanadium battery, all vanadium flow battery (1kw)

1. The principle of all-vanadium flow battery:

All-vanadium redox flow battery is a secondary battery with vanadium ion solution as positive and negative active materials. The positive and negative compartments of the vanadium battery are separated by a diaphragm, and the electrodes are composed of electrode active materials and current collectors; the positive electrolyte is composed of V(V) and V(IV) ionic sulfuric acid solutions, and the negative electrolyte is composed of V(III) and V( II) Composition of ionic sulfuric acid solution. After the battery is charged, the positive electrode material is V(V) ion solution, and the negative electrode is V(II) ion solution; after discharge, the positive electrode and the negative electrode are V(IV) and V(III) ion solution, respectively, and the interior of the battery conducts electricity through H+. V(V) and V(IV) ions exist as VO2+ ions and VO2+ ions, respectively, in acidic solutions.

2. Application of the system:

PV

As the energy storage battery of the solar power generation system, the vanadium battery can adjust the storage capacity of the battery according to photovoltaic modules and weather factors, and the capacity and state of charge of the battery are easy to monitor, and the charge and discharge voltage of the battery pack can be flexibly adjusted.

wind power

In the wind power generation system, the electric energy obtained by wind power generation needs to be stored in the battery first, and then the grid-connected power generation is realized through the inverter. The location conditions of battery energy storage are relatively loose, which is convenient for distributed arrangement on the distribution network side in wind power generation, which can effectively reduce the load peak-to-valley difference, which is equivalent to improving the load characteristics for the power grid.

USP Power

As a public power grid, some large inductive, capacitive, switching power supplies and other loads not only obtain power from the power grid, but also affect the power grid itself, resulting in the distortion of the mains voltage waveform. As an uninterruptible power supply or emergency power system, vanadium batteries can be used as emergency lights in office buildings and backup power for computers. Its advantages are long life and low self-discharge.

power grid peaking

Power grid peak shaving refers to storing the surplus electric energy during the trough period of electricity consumption in other forms of energy, and converting it into electric energy to supply users during the peak period of electricity consumption. If the enterprise uses high-power vanadium batteries to charge the batteries at night when the electricity price is low, the vanadium batteries are mainly used to supply power to various equipment during the day, thus realizing the discount during the low electricity price period.