Maintenance-free battery and dry-charge battery difference

The dry charge battery is the so-called sink. If you do not add dilute sulfuric acid at the factory, you need to add dilute sulfuric acid before loading and then charge for 30 minutes to 1 hour to activate.

The wet battery is the so-called maintenance-free and maintenance-free battery. It is that the diluted sulfuric acid solution has been added at the factory and charged. It can be loaded immediately. However, when the stock is long (usually 6 months), you need to replenish your own electricity.

Maintenance-free is a liquid-free plug, which means that the battery cannot be filled at all during use.

Less maintenance is equipped with 6 liquid port plugs, many people will regard this battery as a water-filled battery, in fact, it is completely different. This kind of maintenance battery is generally used in the original car, especially the Japanese original car almost always use this battery. Because the battery can be added after the water level is lowered during use, if the owner uses it properly (check the water level regularly), then the time is definitely longer than maintenance-free.

The wet-charged lead-acid battery is the type of most of the current batteries. He installed the positive and negative plates in the factory, filled the electrolyte and then packaged and shipped it without any prior charging. Users need to charge first to use after purchase.

The dry-charged battery is chemically used to make the positive and negative plates reach the fully charged state in the factory. The electrolyte is not filled and the package is shipped. After the user purchases, it can be used without charging after filling the electrolyte. This battery is suitable for transport distances.

Currently, dry batteries are mainly used on large trucks. Maintenance-free batteries are commonly used in electric vehicles, small cars, cars, and the like.

Dry-charged battery: Its full name is a dry-charged lead-acid battery. Its main feature is that the negative plate has a high storage capacity. In the completely dry state, it can save the obtained power within two years. When used, just add the electrolyte and wait for 20-30 minutes to use.

Maintenance-free battery: Maintenance-free battery due to its structural advantages, the consumption of electrolyte is very small, and it is basically unnecessary to supplement distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge. The service life is generally twice that of a normal battery. There are also two kinds of maintenance-free batteries on the market: the first one does not require maintenance (adding replenishing liquid) after the one-time addition of electrolyte at the time of purchase; the other is that the battery itself has been charged with electrolyte and sealed. The user cannot add replenishing liquid at all. ,

Dry-charged battery, the full name is a dry-charged lead-acid battery. Its main feature is that the negative plate has a high storage capacity. In the completely dry state, it can save the obtained power within two years. Add the electrolyte and wait for 20 to 30 minutes to use.

Dry-charged battery indicates the symbol: it is expressed as "D" in the battery as dry load.

For example, the “A” in the 6-QA-120D in the battery model is the dry-loaded representation character.

Dry load battery definition:

The so-called dry-charged battery is that no electrolyte is added at the time of shipment, and the electrolyte is added when it is used. Its service life begins. Because there is no electrolyte before use, it is called dry load. In addition to maintenance-free batteries (cars), the cars are dry-type batteries.

Dry charge battery

A dry-charged battery is a battery in which the electrode group can still retain its own charge for a long period of time in a dry state. The active material of the negative electrode plate of such a battery is provided with a certain proportion of antioxidants in lead, such as rosin, lanolin, oleic acid, organic polymer and fatty acid. After deepening treatment, the active material is formed into a deeper sponge-like structure. After the anti-oxidation immersion treatment, a very thin protective film is adhered on the surface of the electrode plate to improve the oxidation resistance. Finally, it is treated by inert gas or vacuum.

After such treatment, the spongy pure lead on the negative electrode plate exists in the dry state for a long time in the air without being oxidized, and the large and negative electric charge obtained in the reaction does not disappear.

Wetly charged battery

The difference between the wet-charged battery and the ordinary battery is that it is formed by grouping the plates. After the formation, the plate is immersed in a dilute sulfuric acid solution having a relative density of 1.35 (15 ° C) and containing 0.5% "mass fraction" of sodium sulfate. Dip in the middle. Sodium sulfate acts as an antioxidant on the surface of the active material of the negative electrode plate. After centrifugation by centrifugation, the assembly is sealed without drying. The wet-charged battery plates and separators still have some electrolyte, and the battery is wet. So it is called “Niehe battery”.

3) Maintenance-free battery

Maintenance-free power storage refers to batteries that do not require additional maintenance, except for the need to keep the surface clean during the service life. This is closely related to its own structural characteristics.

The so-called dry charge battery does not mean that it can be used on the vehicle without adding electrolyte, but it means that the battery can be loaded without using the initial density after the electrolyte is added. The structure of a dry-charged battery is the same as that of a general lead-acid battery, except that the plate is made of a special process. For example, an anti-oxidant such as rosin, oleic acid or stearic acid is added to the lead paste of the negative electrode plate. In the formation of the plate, the formation time is appropriately extended, or the charge-discharge-recharge deepening method is adopted to maximize the conversion of the active material. The negative electrode plate after the formation is placed in an antioxidant solution [boric acid, salicylic acid mixed solution) to be immersed to form a protective film on the surface of the negative electrode plate, and finally the plate is dried in an inert gas. The electrode plate thus produced can store the electric charge obtained in the manufacturing process for a long period of time under conditions of a dry state. The dry charge battery "A, for the mark, such as "6-QA-105, indicates that it is a dry charge battery. At present, the ordinary lead storage batteries used in domestic automobile installations must be charged at 60-70 hours before starting to use, and even require a longer charging and discharging exercise cycle. This necessary supplementary charging process severely affects the use in emergency situations. In the charge battery, it is only necessary to add enough electrolyte according to the regulations. After soaking for 20-30 minutes, it can be loaded and used, and has a long service life.

The so-called dry charge battery does not mean that it can be used on the vehicle without adding electrolyte, but it means that the battery can be loaded without using the initial density after the electrolyte is added.

The structure of a dry-charged battery is the same as that of a general lead-acid battery, except that the plate is made of a special process. For example, an anti-oxidant such as rosin, oleic acid or stearic acid is added to the lead paste of the negative electrode plate. In the formation of the plate, the formation time is appropriately extended, or the charge-discharge-recharge deepening method is adopted to maximize the conversion of the active material. The negative electrode plate after the formation is placed in an antioxidant solution [boric acid, salicylic acid mixed solution) to be immersed to form a protective film on the surface of the negative electrode plate, and finally the plate is dried in an inert gas. The electrode plate thus produced can store the electric charge obtained in the manufacturing process for a long period of time under conditions of a dry state.

The dry charge battery "A, for the mark, such as "6-QA-105, indicates that it is a dry charge battery.

At present, the ordinary lead storage batteries used in domestic automobile installations must be charged at 60-70 hours before starting to use, and even require a longer charging and discharging exercise cycle. This necessary supplementary charging process severely affects the use in emergency situations. In the charge battery, it is only necessary to add enough electrolyte according to the regulations. After soaking for 20-30 minutes, it can be loaded and used, and has a long service life.

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