ENERGY STORAGE

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Given the great development of renewable energy and its intermittent essence, it is necessary to guarantee a stable and quality supply, for which it is essential to install efficient energy storage systems that compensate for the intermittency of solar, wind and other renewable production.

The use of batteries is growing exponentially for the creation of isolated grids or connected with intermittent renewables, as well as to provide quality and lower supply prices to the grids.

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FLOW BATTERIES

SAFE

EFFICIENT

ECO
FRIENDLY

The electrolyte is aqueous

and inherently safe and

non-flammable, so the battery

does not ignite or explode.

It also does not emit gases

or residues.

Automatic operation and

minimal maintenance.

All operating components

(tanks, electrolyte, pumps,

electrode stack, etc.) are

recyclable and reusable.

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Unlimited power sizes with the same power unit byadding more capacity electrolyte storage tanks
Vanadium Oxide Flow Batteries have the best economic performance and lowest LCOE among commercial Flow Redox batteries
Virtually indefinite battery life, 25-year warranty
Tolerates an indefinite number of cycles from 0 to 100% charge or discharge without damage or degradation
Can be left fully discharged or charged for long periods without ill effects
If the electrolytes are accidentally mixed, the battery is not permanently damaged
A single state of charge between the two electrolytes avoids capacity degradation due to a single cell in batteries without flow
No need to charge in multiple stages
Unlimited shelf life (Lead and lithium 5-10 years max.)

TECHNICAL PARAMETERS OF
THE AM-VFB-5kW / 30kWh BATTERY

Rated voltage 48 VDC
Rated power 5 kM
Nominal energy 30 kMh
Nominal energy efficiency 78%
Stacked weight  

130 kg

 

Battery weight  

2,5 t

 

Electrolyte weight 2,2 t
Electrolyte 1.5 M V (IV/III)
Charge limit voltage 60 VDC
Lifecycles more than 20000 cycles
Nominal intensity 105 A
Nominal time 6 h
Rated capacity 630 Ah
Maximum power 20 kW
Stacked size 63 cm x

75 cm x

35 cm

Battery size 2.0 m x

1.2 m x

2.0 m

Electrolyte volume 1.6 ㎡
Work temperature -30cº to +60ºC
Discharge limit voltage 40 VDC
Shelf life limited

PRINCIPLE OF
VANADIUM FLOW BATTERIES

Vanadium flow batteries perform the conversion between

electrochemical energy and electrical energy through the

electrochemical reaction of vanadium electrolytes of different

valences + 2, + 3, + 4, + 5 that circulate in contact with the

electrodes.

The electrochemical reaction, the standard electrode potential,

and the standard electromotive force are as follows:

· Negative: V2+ – e = V3+ E0 = -0.25V (1)

· Positive: VO ++2H++e = VO2++H2O E0 = 1.00V (2)

· Reaction: V2++VO2++2H+ = V3++VO2++H2O E0 = 1.25V (3)

PERFORMANCE

A vanadium redox flow battery (VRFB) has two separate

tanks, one containing a positive and one negative electrolyte.

Both electrolytes consist of the element vanadium dissolved

in sulfuric acid, and vanadium occurs in different oxidation

states (valences).

The battery also has several cells. Each of these cells is

divided into two chambers separated by a membrane,

through which the ions pass. In one chamber there is

a positive electrode and in another a negative one.

The two electrolytes are pumped to either side of the

membrane.

Current from the solar panels is fed to the cell electrodes,

where it moves electrons from positive to negative

electrolyte, charging the battery as liquid flows back into

the tank. During the download, this process is reversed.

ARIES assists you each step of the way, adjusting our solutions
to meet your individual requirements, as well as the regulations in your country.

CONTACT OUR TEAM TO LEARN MORE