Storage battery charging circuit with capacity repair function

Abstract

The invention relates to a storage battery charging circuit with a capacity repairing function. The circuit comprises a rectifying and filtering circuit, a PWM excitation circuit, a storage battery, an output feedback protection circuit and a pulse generation circuit; the rectifying and filtering circuit is electrically connected with the PWM excitation circuit; the PWM excitation circuit is electrically connected with the storage battery; the storage battery is electrically connected with the output feedback protection circuit; the output feedback protection circuit is electrically connectedwith the pulse generation circuit; and the pulse generation circuit is electrically connected with the PWM excitation circuit. According to the storage battery charging circuit with the capacity repairing function of the invention, fast pulse charging is adopted, that is, short-time charging suspension during a charging process can be realized, and therefore, the quantity of air inside the storagebattery can be effectively controlled, air bubbles can be eliminated, high temperature inside the storage battery during charging can be decreased, the loss of water can be reduced, a sulfuration phenomenon can be eliminated, the capacity of the storage battery can be repaired, the number of times of the cyclic charging of the storage battery can be increased, and the service life of the storagebattery can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of accumulator charging, in particular to an accumulator charging circuit with capacity restoration function. Background technique [0002] Batteries are widely used in automobiles, motorcycles, household inverters, etc., but they need to be charged frequently before they can be used. The traditional charging methods of batteries include constant voltage, constant current and staged charging, among which the staged charging mode is constant current-constant voltage-float charge. Although the voltage and current are controlled by staged charging, there is no control measure for the gas volume produced inside the battery due to charging, which can easily cause vulcanization of the plate, that is, a large amount of sulfate crystals are produced on the surface of the negative electrode of the battery. Crystallization hinders the active material on the battery plate from participating in the energy conversion cy...

AI Technical Summary

Problems solved by technology

Although the voltage and current are controlled by staged charging, there is no control measure for the gas volume produced inside the battery due to charging, which can easily cause vulcanization of the plate, that is, a large amount of sulfate crystals are produced on the surface of the negative electrode of the battery. Crystallization hinders the active material on the battery plate from participating in the energy conversion cycle of the battery, increasing the internal resistance of the battery, reducing the capacity, reducing the number of rechargeable cycles, and eventually causing premature failure of the battery

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