How long is the service life of solar colloid battery?

As for suitable environment, if the environment temperature is high, in general, as a benchmark at 25 degrees, life halved every 10 degrees;

And charging conditions, if often owe charge, charge of less than, so, they quickly "broken", a single cycle of charging amount should be more than 1.2 times the discharge

And the depth of discharge, such as release at a time battery capacity of 30% in real terms, you can cycle more than 1500 times, which is about 4 years, but if every time at 80%, is only a little more than a year, 100% is about 1 years.

And don't believe that some manufacturers unconditional commitment for life, it is not scientific. Real life is this? A algorithm

Colloid lead-acid storage battery is the improvement of ordinary lead-acid battery liquid electrolyte, by substituting colloid electrolyte sulphuric acid electrolyte, in safety, storage capacity, discharge performance and service life than ordinary batteries have improved.

Colloid lead-acid storage battery using gel electrolyte, inside there is no free fluid, electrolyte under the same volume large capacity, heat capacity, heat dissipation ability strong, can avoid battery are prone to thermal runaway phenomenon; The electrolyte concentration is low, weak corrosion effect of plate; Concentration is uniform, there is no electrolyte stratification.

Colloid lead-acid battery performance is better than that of valve-control sealed lead-acid battery, colloid lead-acid battery has the use of stable performance, high reliability, long service life, temperature adaptability to the environment (high and low temperature), take a long time discharge capacity, cycle discharge capacity, depth of discharge and large current discharge ability is strong, have to over charge and discharge protection, etc.

The domestic colloid lead-acid battery for electric bicycle is by vacuum infusion in the lining of the AGM, the silica gel and sulphuric acid solution between irrigation to the battery positive and negative plate. Colloid lead-acid battery to oxygen cycle at the beginning of use, this is because the colloid has surrounded the positive and negative plate, positive plate of oxygen diffusion to the negative plate to the above, cannot be achieved with the active material of lead on the negative plate reduction, can only through the exhaust valve, consistent with rich liquid type battery.

Colloid lead-acid batteries used for a period of time after colloid began to dry and shrinkage, cracks, oxygen cycle through the cracks directly to the negative plate. Exhaust valve no longer often open, colloid lead-acid battery is close to sealing work, little water loss. So for electric bicycle battery is main failure mechanism of water loss, the colloid lead-acid battery can obtain very good results. Gel electrolyte is through add gels to sulfuric acid in the electrolyte solidified into colloidal substances, usually in the colloidal electrolyte with colloid stabilizer and compatibilizers, some gel formula with delay colloid solidification and retardant, so that the colloid filling.

The gas phase silica

Colloidal battery gels for gas phase silicon dioxide, the gas phase method of silica is a kind of high purity white odorless nano material, with a thickening, anti-caking, rheology and thixotropy control system, and so on, in addition to the traditional application, in recent years has been widely used in the colloid storage battery.

Gas phase method of silica is silicon halide in the oxyhydrogen flame high temperature hydrolysis of nanoscale white powder, commonly known as fumed silica, it is a kind of amorphous silica products, primary particle size between 7 ~ 40 nm, aggregate particle size is about 200-500 nm, specific surface area of 100 ~ 400 m2 / g, high purity, SiO2 content of not less than 99.8%.Did not deal with the surface of the gas phase silica aggregate is contain a variety of hydroxyl groups, one is isolated, not interference free hydroxyl groups;2 it is even born, each other to form hydrogen bond bonded silicon hydroxyl. Did not deal with the surface of fumed silica aggregation is an aggregate of containing multiple - OH, they are easily in the fluid system form a uniform three-dimensional mesh structure (hydrogen bonding).This kind of 3 d mesh structure (hydrogen bonding) has the external force, shear force, electric field force, etc.) will be damaged, medium is thinning, viscosity decreased, the external force, the three dimensional structure (hydrogen bonding) will heal itself, viscosity rise, namely the thixotropy is reversible.

In gas phase silica gel battery mainly used its excellent thickening thixotropic performance. Colloid electrolyte by gas phase silicon dioxide and a certain concentration of sulphuric acid solution according to the certain proportion configuration, the electrolyte of sulfuric acid and water is "storage" in the silicon gel network, a "soft solid gel", when stationary show solid shape. When the battery is charging, with increased as the concentration of sulfuric acid in the electrolyte of "thickening" accompanied by crack produces, and the positive charge "electrolysis of water" in the late reaction of oxygen through the numerous fissures is absorbed by the cathode, and further back into the water, so as to realize seal battery cycle reaction. Sulfuric acid in the electrolyte concentration at the time discharges to reduce "thin", and become a perfusion before the battery state of thin plastic. As a result, the colloidal battery hasthe function of the "maintenance". Basic silicon dioxide by gas phase method at home and abroad is the AEROSIL200 degussa co., LTD.

Colloidal battery excellent properties

1, can significantly extend the service life of battery. According to the relevant literature, can extend the life of the battery 2-3 times.

2, colloid lead-acid battery self-discharge performance is improved significantly, at the same purity and water quality situation of sulfuric acid battery storage time can extend more than 2 times.

3, colloid lead-acid battery in the case of severe power shortage, vulcanization resistance is very obvious.

4, colloid lead-acid battery discharges in severe cases recovery ability.

5, colloid lead-acid battery resistance to overcharge ability strong, through the two lead-acid battery (a colloid lead-acid battery, a valve-control sealed lead-acid battery) also repeated several times of charging test, colloid lead-acid battery capacity decline more slowly, and valve-control sealed lead-acid battery because water too fast, its capacity decreased significantly.

6, colloid late lead-acid battery discharge performance is obviously improved.

Whether using glass fibre diaphragm valve control type sealed lead-acid batteries (hereinafter referred to as the AGM sealed lead-acid batteries) or using the gel electrolyte valve control type sealed lead-acid batteries (hereinafter referred to as the colloid sealed lead-acid batteries), they are using the cathode absorption principle to sealed battery.

The battery, the positive oxygen precipitation and the cathode will exhalation hydrogen. The anode of 70% oxygen evolution is in the positive charge.

Precipitation of oxygen to the cathode and negative to the following reaction, achieve the goal of cathode absorption.

Ten O2 = 2 pbo 2 pb

Pbo 2 - h2so4 10:2 pbs04 + 2 h20

Negative hydrogen evolution is in charge to 90% at the start, combined with oxygen reduction on the cathode and anode overpotential of hydrogen to improve itself, to avoid a large amount of hydrogen evolution reaction.

For AGM sealed lead-acid batteries, while keep the battery in the AGM diaphragm most of the electrolyte, but must make 10% don't enter the electrolyte membrane pore. The anode generated through this part of the pore to the cathode oxygen is absorbed by the cathode.

The main ingredients for a particle size of gel electrolyte near nano-sized functional compounds, and better rheology, easy to implement with liquid filling of lead-acid batteries. Gel electrolyte into the battery charged internal or several hours later, will gradually gelation occurs, turn state liquid electrolyte for jelly, colloid, a variety of surface active agent is added to the help filling battery before gelling resistance, but also help prevent after filling battery plate sulphates, reduce the corrosion of sheeting, raise the utilization ratio of plate reaction of active material.

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