First, the charging and discharging performance is good, high-power charging and discharging can be performed, and floating charging and deep discharging can also be allowed. For lead-acid batteries , the larger the discharge current, the shorter the battery life; the deeper the discharge depth, the shorter the battery life. The vanadium battery discharge depth will not affect the battery even if it reaches 100%. Moreover, vanadium batteries are less prone to short circuits, which avoids safety problems such as explosions caused by short circuits.
Second, the reactor as the place where the reaction occurs is separated from the storage tank for storing the electrolyte, which fundamentally overcomes the self-discharge phenomenon of the conventional battery. The power depends only on the size of the stack. The capacity depends only on the electrolyte reserves and concentration. The design is very flexible. When the power is constant, to increase the energy storage capacity, it is only necessary to increase the volume of the electrolyte tank or increase the volume or concentration of the electrolyte. Yes, without changing the size of the stack; the purpose of "instant charging" can be achieved by replacing or adding a charged electrolyte. It can be used to build kilowatt-class to 100-megawatt energy storage power stations with strong adaptability.
Third, the number of chargeable and dischargeable times is extremely large, and the theoretical life span is countless times. The charge-discharge time ratio is 1:1, while the lead-acid battery is 4:1. Moreover, the vanadium battery charge and discharge switching response speed is fast, less than 20 milliseconds, which is very beneficial for balanced power supply.
Fourth, the location freedom is large, the land occupation is small, the system can be fully closed operation, no acid mist, no acid corrosion. The electrolyte can be reused, no emissions, and easy to maintain.
Fifth, the energy efficiency is high, the DC-to-DC energy efficiency can reach more than 80%, and the lead-acid battery is only about 60%. The state of each unit battery in the vanadium battery pack is basically the same, and the maintenance is simple and convenient.
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