The information of GEFC-50V400A2h-VRB Vanadium Redox Battery

GEFC-50V400A2h-VRB Vanadium Redox Battery 
Brief Introduction: Rated Voltage 50 V
Rated Current 400 A
Rated Power 20 kW
Rated Time 2 h
Rated Energy Efficiency 75%
Single Cell Number 80
Stack Weight 540 kg
Stack Size 160 x 70 x 70 cm
Battery Weight 3000 kg
VRB Size 200 x 120 x 240 cm
Electrolyte VOSO4
Working Temp. 5 ~ 35 ℃
Limited Charge Voltage 64 V
Limited Discharge Voltage 40 V
GEFC-50V400A2h-VRB Vanadium Redox Battery decription :
Advantages of vanadium battery
Compared with other chemical power, vanadium battery has obvious advantages, the main advantages are as follows:
1) Power: by increasing the number of single cells and the electrode area, you can increase the power of the vanadium battery, the current U.S. commercial demonstration run of the vanadium battery power reached 600 MW.
2) Capacity: by arbitrarily increasing the volume of the electrolyte can be any increase in the vanadium battery can Daji Wa above; can be doubled by increasing the concentration of electrolyte, vanadium battery.
3) High efficiency: the vanadium battery electrodes with high catalytic activity, and positive and negative electrode active material is stored separately in the positive and negative electrolyte storage tank, to avoid positive and negative electrode active material self-discharge consumption, vanadium battery charge and discharge The energy conversion efficiency up to 75%, much higher than 45% of the lead-acid batteries.
4) Long life: vanadium battery positive and negative electrode active material is only present in the positive and negative electrolytes, charging and discharging the other battery often the phase change, the depth of discharge without damaging the battery, battery life length. Vanadium battery modules commercial demonstration of VRBPowerSystems, Canada is the longest running normal operation for over nine years, the charge-discharge cycle life of more than 18,000 times, much higher than the 1000 fixed lead-acid batteries.
5) Response speed: heap filled with electrolyte of vanadium battery can be started in an instant, the switch only takes 0.02 seconds to run the process of charging and discharging state, the response speed of 1 ms.
6) instantaneous charge: by replacing the electrolyte can be achieved instant charge of vanadium battery.
7) Safety: vanadium battery potential explosion or fire hazard, even if the positive and negative electrolyte mixed non-hazardous, but the electrolyte temperature is slightly higher.
8)low cost: In addition to the ion-exchange membrane, the vanadium battery components for low-cost carbon materials, engineering plastics, rich sources of material, easy recovery, does not require precious metals for the electrode catalyst, and low cost.
9) vanadium battery site degrees of freedom can be fully automated closed operation, pollution, easy maintenance, low operating costs.
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