Can the electric car silicone battery be added battery liquor?

Yes. But it is still recommended to find a professional repair technician to do it.

Repairing the electric vehicle battery is a very professional profession, and it is necessary to master the internal structure of the battery and the principle of the battery. Not all batteries are worth repairing. Generally, if you can use the rehydration or supplemental cycle to extend the battery life, you can repair it. Others like no voltage and no current do not need to be done.

The valve-regulated maintenance-free lead-acid battery does not need to be water-maintained during normal use. If it cannot be used at the end of its life and has passed the retention period, you can try hydration repair.

The liquid added to the battery in the market is commonly known as replenishing liquid, which is dilute sulfuric acid. The density is generally 1.05~1.1g/ml. The battery will only lose water during use. Sulfuric acid will not be lost, so it is not necessary to add dilute sulfuric acid. Just add water (distilled or pure water). Do not add tap water or mineral water. Due to the high content of mineral impurities and high conductivity, it will cause a problem of large self-discharge of the battery.

Water repair method:

1) First discharge the battery completely (the internal acid density of the battery after discharge is basically 1.1g/ml or less);

2) Take out the cover piece, then remove the safety valve, pay attention to save it, do not dirty the safety valve for later use;

3) Add water, generally add 1g/AH per cell;

4) After standing for about one hour, install the safety valve and the cover sheet;

5) Charge with a matching charger, fully charge after full charge, and cycle three times.

Not only need to add water, but also need to do "hemodialysis", that is, add and extract until the liquid is no longer black, continuous "dialysis" can increase the solubility of lead sulfate and eliminate the vulcanization, while the density of each hole Mix thoroughly, then do a few quick charges and then discharge

The purpose of "hemodialysis" is to remove the active material that has fallen off. It has not fallen off and will not continue to return to the electrode plate. After cleaning, it will avoid internal short circuit and increase the contact area of the electrolyte.

The colloidal lead-acid battery is an improvement of the ordinary lead-acid battery for the liquid electrolyte. The colloidal electrolyte is substituted for the sulfuric acid electrolyte, which is improved compared with the ordinary battery in terms of safety, storage capacity discharge performance and service life.

The colloidal lead-acid battery adopts a gel electrolyte, and there is no free liquid inside. The electrolyte capacity is large under the same volume, the heat capacity is large, and the heat dissipation ability is strong, which can avoid the thermal runaway phenomenon of the general storage battery; the electrolyte concentration is low, and the electrolyte plate is low. The corrosion effect is weak; the concentration is uniform, and there is no electrolyte stratification.

The performance of colloidal lead-acid battery is better than that of valve-regulated sealed lead-acid battery. The colloidal lead-acid battery has stable performance, high reliability, long service life, strong adaptability to ambient temperature (high and low temperature), and long-term discharge capacity, cycle discharge capacity, deep discharge and high current discharge capacity, overcharge and over discharge self-protection.

The domestic colloidal lead-acid battery used for electric bicycle is vacuum infused in the AGM separator, and the silica gel and sulfuric acid solution are poured between the positive and the negative plates of the battery. The colloidal lead-acid battery cannot be circulated in the initial stage of use. This is because the colloid encloses both the positive and negative plates. The oxygen generated on the positive plate cannot diffuse to the negative plate, and the lead reduction of the active material on the negative plate cannot be achieved. It can only be discharged by the exhaust valve, which is consistent with the flooded battery.

After the colloidal lead-acid battery is used for a period of time, the colloid starts to crack and shrink, and cracks are generated. The oxygen passes through the crack directly to the negative plate for oxygen circulation. The exhaust valve is no longer open frequently, and the colloidal lead-acid battery is close to sealing work, with little water loss. Therefore, the main failure of the electric bicycle battery is the water loss mechanism. The use of the colloidal lead-acid battery can achieve very good results. The colloidal electrolyte is obtained by adding a gelling agent to the electrolyte to solidify the sulfuric acid electrolyte into a gelatinous substance. Usually, the colloidal electrolyte is further provided with a colloidal stabilizer and a compatibilizer, and some colloidal formulations are also provided with a retarding colloid solidification and retardation to facilitate the filling of the gel.

Fumed silica

The colloidal battery gel is fumed silica, which is a high-purity white odorless nano-powder material with thickening, anti-caking, control system rheology and thixotropic effects, in addition to traditional it has been widely used in colloidal batteries in recent years.

Fumed silica is a nano-scale white powder formed by high temperature hydrolysis of silicon halide in oxyhydrogen flame. It is commonly known as fumed silica. It is an amorphous silica product with a primary particle size of 7-40 nm. The aggregate has a particle size of about 200-500 nm, a specific surface area of 100-400 m2/g, a high purity, and a SiO2 content of not less than 99.8%. The surface untreated fumed silica aggregates contain a plurality of silanol groups, one is an isolated, undisturbed free hydroxyl group; and the other is a bonded silanol group which forms hydrogen bonds with each other. The surface untreated fumed silica aggregate is an aggregate containing a plurality of -OH, which easily forms a uniform three-dimensional network structure (hydrogen bond) in a liquid system. When the three-dimensional network structure (hydrogen bond) has an external force (shear force, electric field force, etc.), the medium is thinned, the viscosity is decreased, and once the external force disappears, the three-dimensional structure (hydrogen bond) recovers on its own and the viscosity rises, the thixotropic is reversible.

Fumed silica is mainly used in colloidal storage batteries for its excellent thickening thixotropic properties. Colloidal electrolytes are composed of fumed silica and a certain concentration of sulfuric acid solution in a certain proportion. Sulfuric acid and water in this electrolyte It is "stored" in a silicone gel network and is a "soft solid gel" that appears solid when stationary. When the battery is charged, the "electrolyzed water" reaction in the later stage of charging causes the oxygen generated by the positive electrode to be absorbed by the negative electrode through the numerous cracks, and further It is reduced to water to achieve a battery seal cycle reaction. The concentration of sulfuric acid in the electrolyte at the time of discharge makes it "thinning" and becomes a thin state of the gel before the battery is poured. Therefore, the gel battery has a "maintenance-free" effect. The basic use of fumed silica at home and abroad is Degussa AEROSIL200.

Excellent properties of colloidal batteries

1. Can significantly extend the life of the battery. According to the relevant literature, the battery life can be extended by 2-3 times.

2. The self-discharge performance of the colloidal lead-acid battery has been significantly improved. Under the same sulfuric acid purity and water quality, the storage time of the battery can be extended by more than 2 times.

3. The colloidal lead-acid battery has obvious anti-vulcanization performance in the case of severe power shortage.

4. Colloidal lead-acid batteries have strong recovery ability under severe discharge conditions.

5, colloidal lead-acid battery anti-overcharge ability, through two lead-acid batteries (a colloidal lead-acid battery, a valve-controlled sealed lead-acid battery) also repeated several overcharge test, colloidal lead-acid battery capacity The drop is slower, and the valve-regulated sealed lead-acid battery has a significant drop in capacity due to excessive water consumption.

6. The late discharge performance of the colloidal lead-acid battery has been significantly improved.

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