How to repair sealed lead-acid batteries?

1. Pulse repair method: using a high-frequency positive and negative pulse generator to continuously produce high and low frequency pulses to the battery. One can dissolve large lead sulfate, and the other is pulse disturbance, which destroys the conditions for continuous growth of large lead sulfate. This method overcomes the limitations of the previous repair technology. It has the advantages of rapidity, about 8-12 hours, high repair efficiency, low power consumption, and will not cause battery loss, softening of the positive plate, and changing the original structure of the electrolyte. The repair effect of severely vulcanized lead-acid batteries is 3~4 times that of the past, and the repair rate is over 90%. The application of this technology reduces the number of scrapped batteries. 2. Strong current repair method: The strong current repair method is to take charge. The long-lasting high-voltage or high-current repair method of the battery is mostly used when the effect of the pulse repair method is not obvious. First, high-voltage repair method: This method is important to repair the battery with a charging voltage 1.3-1.5 times the nominal voltage of the battery. For example, a 36V battery is charged with a 48V charger under the condition of the same or close to the charging current. , The charging time should be controlled and not too long, otherwise the battery will generate heat due to gas evolution. This method is useful for repairing batteries with short circuit and low plate softening, but improper use can also cause damage to the pressure point of the battery plate. Second, the high current repair method: This method is important to take a charging current 1.5-2.0 times higher than the usual charging current to repair the battery. For example, a 20AH battery is charged with a 3-4A charger. The pros and cons and high voltage repair method the same. 3. Full charge and full discharge repair method: The full charge and full discharge repair method is to fully charge the battery and then completely discharge the battery to repair it. The full-charge and full-discharge repair method is important for repairing slightly damaged batteries. At the same time, this method can also effectively activate the deep active material of the battery and increase the battery capacity. Such as lightly vulcanized batteries, batteries with higher internal resistance, the key to this method is that the discharge must be sufficient, and each single battery must be fully discharged separately, full charge and full discharge 1-2 times, the capacity of the battery Generally can be improved. The full charge and full discharge repair method should not be used frequently, at least once every six months, and at most once every three months. 4. Replenishing water repair method: The battery loss can be repaired by replenishing water. The purpose is to dilute the increased concentration of sulfuric acid to carry out the electrolytic reaction normally. The method of replenishing water is relatively simple. Just open the upper cover of the battery, you can see that there are six round holes, inject a certain amount of distilled water into each round hole, and soak for more than 24 hours. Water replenishment can only be supplemented with distilled water. Water with other ingredients, including purified water, cannot be added, because there are various metal molecules in the water of other ingredients, which may cause self-discharge and damage the battery after being added to the battery. 5. Regrouping repair method: Electric vehicle batteries are generally battery packs made up of several batteries in series. The damage of the battery is multifaceted, and there may be several damages to the battery at the same time: Regarding the vulcanized battery, after repairing The use effect is good; however, the battery with the softened plate and the partition can be repaired immediately. Because it is a physical injury, the reusable value is not great. The use time after repair is also very short, and the effect of repair will be even worse. . The best way is to replace the batteries with little repair value (replace them with old batteries with more than 80% capacity), and then regroup them with the remaining batteries. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What factors are beneficial to the development of the lithium battery cathode material industry?