Can lead acid batteries be repaired? Acid battery repair methods?

1. Pulse repair method: High-frequency positive and negative pulse generator is used to continuously generate high and low frequency conversion pulses for the battery. One of them can have the condition of dissolving large lead sulfate, and the other is pulse disturbance, which destroys the condition of continuous growth of large lead sulfate. This method overcomes the limitations of the previous repair technology, has a rapidity, about 8-12 hours, high repair efficiency, low power consumption, does not cause the battery to lose water, the positive plate softens and changes the original structure of the electrolyte, etc. The repair effect of severely sulphide lead-acid batteries is 3 to 4 times that of the past, and the repair rate is over 90%. The application of this technology reduces the amount of scrapped batteries.

2. Strong electric repair method: The strong electric repair method is a method of repairing the battery by using a persistent high voltage or a large current during charging, and is often used when the effect of the pulse repair method is not obvious. First, the high voltage repair method: This method mainly uses the charging voltage of 1.3-1.5 times of the nominal voltage of the battery to repair the battery. For example, the 36V battery is charged by the 48V charger under the condition that the charging current is constant or close. The charging time should be mastered. It is not easy to be too long. Otherwise, the battery will be heated due to gassing. This method has a certain repairing effect on a battery with short circuit and low softening of the electrode plate, but improper use may also cause damage to the pressure plate of the battery plate. Second, the high current repair method: This method is mainly to use a charging current 1.5-2.0 times higher than the usual charging current to repair the battery, such as 20AH battery using 3-4A charger for charging, pros and cons and "high voltage repair The law is the same.

3. Full charge full discharge repair method: Full charge full discharge repair method is a method to repair the battery after the battery is fully charged and then completely discharged. The full charge and full discharge repair method mainly has a certain repairing effect on the battery with mild damage, and the method can also effectively activate the active substance in the deep layer of the battery and improve the battery capacity. For example, a slightly vulcanized battery and a battery with a high internal resistance, the key to this method is that the discharge must be sufficient, and the individual cells are individually fully discharged, fully charged and discharged 1-2 times, and the capacity of the battery. Generally it can be improved. The full charge full discharge repair method should not be used frequently, at least once every six months, and once every three months.

4, hydration repair method: the battery "water loss" can be repaired by the method of water replenishment, the purpose is to dilute the concentration of sulfuric acid to carry out the electrolysis reaction. The method of hydrating is relatively simple. Just open the upper cover of the battery, you can see that there are six round holes, and inject a certain amount of distilled water into each round hole, and then soak for more than 24 hours. The hydration can only be supplemented with distilled water. It is not allowed to add water of other ingredients, including pure water. Because other components have various metal molecules in the water, it is easy to cause self-discharge and damage the battery after being added into the battery.

5, re-matching repair method: electric vehicle battery is generally a battery pack made up of several batteries in series, battery damage is multi-faceted. There may be several aspects of battery damage at the same time: for the vulcanized battery, after repair The effect is better; but for the softened and broken battery of the plate, it can be repaired immediately. Because it is a physical injury, the reuse value is not great, the use time after repair is also very short, and the effect of repairing will be worse. . The best way is to replace the old battery with the repair value (replace the old battery with more than 80% capacity), and then re-group with the remaining batteries.

In general, repairs are only for batteries that do not have quality problems. The main condition is battery vulcanization caused by over discharge. 1. Use a silicon rectified charger to charge the current for 3-5 hours with a current of one-twentieth of the capacity, and then charge it with more than one-tenth of the battery for more than 12 hours. The battery can basically be repaired. 2. The number is also multiplied by 2 The capacity of one-tenth of a large current is charged for 30 minutes, and then according to the above method, the method used depends on the actual condition of the battery. It is generally recommended to use the first method.

The electrode is mainly made of lead and its oxide, and the electrolyte is a battery of a sulfuric acid solution. English: Lead-acid battery. In the discharge state, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the charged state, the main components of the positive and negative electrodes are lead sulfate. It is divided into exhaust battery and maintenance-free lead-acid battery.

The battery is mainly composed of a tubular positive plate, a negative plate, an electrolyte, a separator, a battery tank, a battery cover, a pole, and a liquid injection cover. The electrode of the vented battery is composed of an oxide of lead and lead, and the electrolyte is an aqueous solution of sulfuric acid. The main advantage is that the voltage is stable and the price is cheap; the disadvantage is that the specific energy is low (ie, the energy stored per kilogram of battery), the service life is short, and the daily maintenance is frequent. Old-fashioned ordinary batteries generally have a life span of about 2 years, and the height of the electrolyte is regularly checked and distilled water is added. However, with the development of technology, the life of lead-acid batteries has become longer and the maintenance is simpler.

Lead-acid battery charging method: How to repair lead-acid battery

Lead-acid battery classification

1) Ordinary battery; the plate of an ordinary battery is composed of oxides of lead and lead, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantage is that the voltage is stable and the price is cheap; the disadvantage is that the specific energy is low (that is, the energy stored per kilogram of battery), the service life is short, and the daily maintenance is frequent.

2) Dry-charged battery: Its full name is dry-charged lead-acid battery. Its main feature is that the negative plate has high storage capacity. In the completely dry state, it can save the obtained power within two years. When only the electrolyte is added, it can be used after 20-30 minutes.

3) Maintenance-free battery: Maintenance-free battery due to its own 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 two types of maintenance-free batteries on the market: the first one requires no maintenance (addition of replenishing liquid) during the one-time application of the electrolyte at the time of purchase; the other is that the battery itself has been charged with electrolyte and sealed off at the factory. The user can't add supplemental liquid at all.

Lead-acid batteries are available in 2 volt, 4 volt, 6 volt, 8 volt, 12 volt, 24 volt, and range from 200 mAh to 3000 ampere. The VRLA battery is a rechargeable battery based on AGM (Aspirating Glass Fiber Board) technology and a calcium grid. It has superior high current discharge characteristics and an extremely long service life. It does not need to add water during use.

Correct lead-acid battery charging method

1. Determine the rated voltage and rated capacity of the battery or battery pack. The rated voltage is used to determine the charging voltage and the rated capacity is used to determine the charging current.

About voltage: The easiest way is to read it from the tag; for example, the rated voltage of the CSB battery shown in Figure 1 below is 12V.

If the label is worn or not at all, it can be judged from the number of vent holes or safety valves that are round holes at the top of the battery that can be opened or opened. To be sure, all lead-acid batteries currently have venting holes. Each vent represents one unit, 2V, so the total voltage of the battery shown in the other figure is 24V because it has 12 vents.

About the capacity: can also be read from the label or calculated; in general, the label will indicate the rated voltage of the battery, as shown in Figure 3 PNP battery is marked as 65Ah, but the UPS battery is usually represented by W, as shown One shows 34W. For this kind of battery, the simple calculation method is the wattage divided by four, that is, 8.5Ah; but when it comes to Figure 2, there is no way, it can only be estimated according to the volume or importance. And the error is large. Generally speaking, the 12V100Ah AGM battery weighs 30~35kg. Therefore, if the battery in Figure 2 weighs 500kg, it can be calculated that its capacity is about 700Ah.