As urbanization continues to accelerate, people's mobility needs are becoming more diverse. At the same time, the use of electric vehicles is gradually increasing. And if there is a problem with the cruising range of the two-wheeled battery car, it will greatly affect daily travel.
Batteries are easy to wear, so can battery reconditioning still be achieved? Which batteries can be repaired and which ones? This article summarizes some battery reconditioning methods for your reference. Not only can battery performance be greatly improved, but battery life is also extended. However, it should be noted that all battery reconditioning operations must be performed by professionals.
1. What is battery reconditioning method
The charging time of electric vehicles should be basically controlled within 10 hours, and it is easy to damage the batteries if the charging time is too long. Each charge should be charged before battery is used up, so that the damage to the battery is relatively small, and the service life is longer.
The key to the service life of electric vehicles is the rational use and maintenance of the battery. The repair method is to open the battery cover, remove the 6 safety helmets, fill each hole with distilled water with a syringe. If you add 1.28 standard electrolyte, the plate may burn out due to excessive acid solubility.
After filling, let the batteries stand still for half an hour to allow the spongy body around the plate to fully absorb water. Then use the resistor to discharge and drain all the electricity in the batteries. If there is no resistance, you can use a 12v battery instead.
2. Principles of battery reconditioning technology
The battery reconditioning refers to the repair of lead-acid batteries with a battery repair instrument. It can repair and recombine the imbalance, water loss, sulfation, softening, shedding, open circuit, short circuit, abnormal acid specific gravity and other faults of lead-acid batteries. And achieve the purpose of battery reuse.
Also battery reconditioning can restore some of the battery's performance to a level close to that of a new battery in various ways. A battery reconditioning instrument is divided into comprehensive and pulse repair instrument, capacity tester, intelligent charger, etc., which can be used to repair battery acidification, imbalance, plate softening, water loss, open circuit, etc.
3. Common battery reconditioning methods
● High-flow charging
The use of high current and high voltage to charge lead-acid batteries can remove a certain amount of vulcanization, but high current and high voltage charging will cause battery temperature to be too high, the plate to soften and deform, and damage the internal structure of the batteries, so this battery reconditioning method has been eliminated.
● Sulfation repair method
The vulcanized battery is repaired with a Kedi repair instrument, using fuzzy numerical control theory. By measuring the state of the battery, cathode and anode frequency conversion particle waves are continuously emitted while charging and discharging, and the hard lead sulfate that becomes crystallized in the battery is removed within 10 to 20 hours.
● Shallow cycle high current charging method
For the sulfide lead-acid battery pack, a shallow cycle charge and discharge of battery pack is carried out with a large current of 5 amps. After the charge is fully charged, put the power to 30%, so repeated several times, it should be noted that when charging and discharging, the temperature should not exceed 45 degrees. This method has a certain repair effect on lightly vulcanized batteries, but has little effect on severely vulcanized batteries.
● Pulse repair
Electric vehicle batteries need to be rehydrated, which can extend car battery life. Special tip: Use straws such as glass and plastic for hydration tools. Medical disposable syringes are recommended for easy use and easy to measure. The rehydration tool should not use any metal containing utensils, and the syringe should be used after removing the metal needle and placing a plastic tube on it.
● Water loss repair
The repair method is to add pure water, sodium sulfate, potassium sulfate, etc. to the batteries, charge and discharge several times, and then pour out the pure water and add a higher concentration of battery reconditioning solution. This repair method can restore 80% of the capacity of high-quality lead-acid batteries within one year and is the mainstream battery reconditioning method because it is simple and easy to operate, and the repair effect is remarkable.
● Plate softening method
After discharging the battery at 10.5V, deeply discharge it with a bulb for one to five hours. Then use an activator to activate battery reconditioning.
4. The battery reconditioning value and effect
If the battery is within 3 years of resetting, the effect is very good. Because the lead-acid battery will lose water due to charging after 1-2 years of use, or because the battery overcharge will cause crystallization wrapped in layers of lead sulfate, it is easier to produce after water loss.
If sulfation occurs and the battery capacity decreases, at this time, after supplementing the batteries with repair fluid, use repair equipment to remove sulfur from the battery. The whole process takes about 40 hours.
Therefore, a friendly reminder to everyone, to judge whether the battery needs to add water or repair fluid, please do not blindly add it privately, so as not to bring trouble. The best way is to find a professional master who repairs electric vehicles, make a comprehensive judgment according to the use of your battery, and prescribe the right medicine, so as to give full play to the best performance of the batteries.
5. Notes for battery reconditioning
After a group of batteries is filled with liquid, the lid of the liquid is not covered, because the battery needs to be fully charged after adding the repair liquid. When charging, the repair liquid and the electroactive material undergo a chemical reaction that will produce heat and gas, and if the small hole for adding liquid is covered.
The gas generated cannot be discharged, which will cause the internal pressure of the battery to be too high. It is best to let the repair solution stand for more than two hours just after the battery has been added, because the repair solution just added takes an hour to slowly penetrate into battery.
The added repair fluid penetrates fully into batteries, which also improves the battery's repair performance. If an electric car is used every day, it should be charged every day, unless it is driven for less than one or two kilometers.
When charging, be sure to fully charge. When the red indicator of the charger is on, it means that batteries enter the floating constant voltage charging state. At this time, it does not mean that battery is sufficient (about 70-80%). When fully charged, the charger turns green. Once charged, the battery should be fully charged regardless of how much power battery consumes.
Electric vehicle batteries can be repaired, and the repaired battery capacity and cruising range will have a significant improvement. Not all batteries have the value of maintenance, lead-acid batteries have a certain repair value if used within two years, but the specific situation should be based on the correct judgment after the inspection of the owner who repairs the electric vehicle.
If the battery bulge is deformed, there is definitely no repair value. If the appearance of the battery reconditioning is complete, and the voltage is above 11.6 volts after discharging, it has a certain repair value. Whether the repaired battery is added with distilled water or electrolyte, professional maintenance personnel need to know after testing, do not blindly operate, so as not to lose more than the loss.