Author ：Iflowpower – Portable Power Station Supplier
In life, you may have touched a wide variety of electronic products, then you may not understand some of its components, such as the lead-acid battery that it may contain, then let Xiaobian lead everyone to learn lead-acid batteries together. Since the 1859 French physicist Pranted lead-acid battery, the extended battery life has become an important topic of people. In a long-term practice, people have used many ways to eliminate battery poles, and they are summarized.
Type: 1. Method for dissolving large current charging large current charging dissolution large sulfate. In the experiment, this method can only obtain temporary effect by eliminating vulcanization, and can cause water distribution and positive electrode plate softening during elimination of vulcanization.
Battery life will seriously damage the battery, and now there are very few people who use this simple method to repair the battery. 2, full charge full release method (deep discharge repair) fully charged and complete discharge repair method is to repair the battery after the battery is fully charged and then completely discharged. Complete charging and complete discharging methods have a certain fix to a slight damage to the battery.
At the same time, the method can also effectively activate the deep active substance of the battery and add battery capacity. Battery for mild vulcanization and high resistance. The key to the method is that the discharge must be sufficient, and each battery must be completely discharged, fully charged and completely discharged from 1 to 2 times, and the average capacity of the battery can be improved.
Full electricity and complete release repair methods cannot be used frequently, you can use it every three months. 3, shallow cycle large current charging method About the vulcanized battery, use a large current (current in 5 hours) to charge the battery to a slightly overchair. It is recommended to control the electrolyte temperature of no more than 40 ¡ã C, then discharge 30%.
Repeat several times to reduce and eliminate vulcanization. The mechanism of the method is that the surface of the electrode plate is slightly washed with a sulfide salt of the precipitated gas to dissolve and convert it to active substances. This method is characterized by slight vulcanization.
However, this is not suitable for the old battery, because the active material of the positive electrode plate will be strongly washed off while the gas is released, which will make the active material so soft or even fall off. 4, add active agent on the vulcanized battery, add pure water, sodium sulfate, potassium sulfate, tartaric acid, etc. Acid solution.
More than 80% of the concentration of standard solution and capacity recovery can be considered successful. According to the mechanism of this method, the added sulfate coordination dopant may form a coordination compound with many metal ions including sulfate. The resulting compound is unstable in an acidic medium, and the non-conductive sulfide layer will gradually dissolve and return to the solution.
The use of chemical methods eliminate the lead crystals of sulfate not only cost, but also added the internal resistance of the battery, and the original structure of the electrolyte is changed. Short maintenance life, large side is used. The repair rate is about 40%.
5, pulse repair About the vulcanized battery, can use some special pulse repair agents to charge and discharge the battery multiple times to eliminate vulcanization. One is high pressure and large current pulse charging, and vulcanization is eliminated by negatively discharge. This method is fast and effective, but it has a greater impact on battery life.
Another method is to use a small current frequency of up to 8 kHz or higher, and dissolve using large crystal resonance. This method is slow, and the repair effect is better. However, the maintenance time is relatively long, usually more than 120 hours.
For solid physics, the mechanism of this method is that any insulating layer can break down at a sufficiently high voltage. Once the insulating layer is broken, it will become a conductive state from the insulation state. If a high voltage is applied to a conductive difference and a high resistance of the sulfate layer, the lead crystals may be broken.
If the high pressure is short enough and the current is limited, when the sulfide layer is pierced, the charging current is appropriately controlled to cause the battery to be discharged. The battery of the battery depends on the size of the terminal voltage and charging current. If the pulse width is short enough and the duty ratio is sufficiently large, the micro charge may be too late to form a gas under the condition of the crude sulfate crystal breakdown.
Adding a negative pulse during the charging process to reduce the temperature rise of the battery is useful. It is also possible to ensure that the gas precipitation of the electrode plate is reduced when the sulfate layer is broken, thereby eliminating the pulse.
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