Electronic battery recovery
According to statistics, more than half of the batteries fail due to sulphation of the plates. For what reasons this phenomenon occurs, I will not go into particular, but in a small part this is due to improper use of the battery. And more - with a long battery life. There are a number of ways to reverse the sulphation, a process called desulphation. I will tell you how to assemble an electronic device that can desulfate battery plates with electrical pulses.The circuit is not intricate. On the left is a rectifier bridge with smoothing capacitors. Next is the stabilizer on the chip, which feeds the master oscillator assembled on the timer 555. The timer in turn controls a powerful field-effect transistor that commutes the battery with the power source. The whole circuit is connected to a rectifier transformer, with a secondary output voltage of 15 volts 20 alternating current. The voltage is rectified to a constant current of up to 20-25 V. This will be the main voltage that will be applied to the battery. The master oscillator generates very short high frequency pulses, somewhere between 10 and 35 kHz. By means of the transistor switch, these pulses are fed to the battery.This method of recovery is very effective and helps to bring back to life, it would seem, almost "dead" batteries.The whole process can take you from 1 hour to 24 hours, it all depends on the battery capacity.Naturally, for car batteries it will be more. Also, perhaps for a battery with a large capacity, you may need a more powerful network transformer with a higher voltage. A variable resistor regulates the pulse frequency. Rotating which, by experience, achieve the best results of recovery. For all the time I managed to recover more than one battery. The device is suitable for both 12-volt batteries and 6-volt batteries.
Advantages of an electronic method of battery recoveryTo restore the battery, it is not necessary to disassemble the battery, which is so important when restoring non-separable or gel batteries. It does not even need to be removed from the car, if we are talking about a car battery. This method of recovery is effective in 80 percentof cases - and this is a very good percentage. By time, the method is not expensive and will take you no more than 24 hours.
Principle of operationThe device gives the battery a short pulse of high amplitude. Peak, which can reach a value of 10-25 A. Under the influence of these pulses of high frequency and high amplitude, the electrons of ions are excited, which in turn destroy the lead sulfate,and the battery recovers its capacity.
Assembling the device for desulfationYou can assemble the scheme on the breadboard. The transistor will not be superfluous to install on a small radiator.
Battery recovery processIn any case, before starting to restore the battery, it would be nice to check the presence of electrolyte in banks. And, if necessary, add distilled water. Well, then we connect to the battery as a normal charger and periodically monitor the charging process, measuring the voltage on the battery.
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