Homemade battery repairer circuit diagram

An electric vehicle battery repairer  　　sold on the market has no obvious effect after use. After analyzing its circuit structure, we found that the high-voltage and high-frequency pulse used for repair is achieved by an oscillation circuit and a self-induction boost coil. Due to frequency limitations, the self-induction boost coil cannot be made very large, but for batteries with internal resistance and small size, the amplitude of the high-voltage pulses that can be generated under static conditions becomes very low when applied to the battery . Therefore, the repair effect on the battery is not obvious.

　　After reviewing and demonstrating the correctness of the basic principles of battery repair, Ziji designed a high-performance repairer that uses a transformer to regulate voltage and an adjustable pulse width oscillator composed of a 555 circuit to drive a CMOS tube. It completely overcomes the shortcomings of the self-inductance boost coil circuit, and the effect is very good after use. Generally, the repair of an old battery that has been used for nearly 3 years can be effective in one day, and more than 70% of the rated capacity can be restored in 3 days (battery with damaged plates cannot be repaired).

　　This circuit can be used for both repair and charging. The repair transformer uses a multi-tap transformer to suit batteries of different voltages . Batteries from 3v to 36v can be repaired. It must be noted that the voltage range selected when repairing the battery is twice the battery voltage. For example, when repairing a 12v battery, choose the 24v transformer gear, and when repairing a 36v battery, choose the 60v transformer gear, but the pulse width potentiometer must be adjusted to the minimum state (that is, the current is the minimum state). When charging, you can choose a transformer with the same voltage range and adjust the pulse width potentiometer appropriately to make the current a suitable charging current.

　　This circuit is simple and suitable for homemade use. The ammeter adopts the 5A range. The shunt can be wound with 1 square millimeter enameled wire by itself. The required length is determined by measuring the actual current and the swing position of the meter head with a multimeter.