Constant current charging-stopping type charger

Abstract

The invention provides a constant current charging-stopping type charger, and belongs to the technical field of electronics. The constant current charging-stopping type charger comprises a load unit, a constant current charging unit, a voltage limiting finish unit, a pulse generation unit, a finish switching unit, a charging process display unit and a timing finish unit. Triodes in the constant current charging unit are welded into a constant current form, and are controlled by the pulse generation unit, thus constant current charging in the form of pulses is realized. In the constant current charging unit, the two triodes form a relation of work and backup, and when a triode is damaged, the other triode instantly substitutes, thereby ensuring the life of the charger. Two finish modes are provided, including voltage limiting finish after a battery is fully charged and timing finish by counting, selection is carried out through the finish switching unit, the life of the charger is greatly prolonged, the rejection rate of chargers is reduced, all the units are scientifically connected, comprehensive utilization is achieved, and the reliability is high.

Description

technical field [0001] It belongs to the field of electronic technology. Background technique [0002] With the enrichment of modern life, there are more and more types of electrical appliances using batteries, such as digital machines, mobile phones, etc., and many types of chargers have appeared for this reason, but there are still many types of low-carbon and environmentally friendly charging circuits in these types. exist. [0003] One of its meanings is that in current products, the charging director, which is the circuit transistor that connects and shuts off the charging, is easily damaged. Once damaged, the charger becomes garbage. According to statistics, this failure has become the main failure point of the charger. It is a great waste to turn it into garbage just because of this damage. cost, so people are often throwing away). [0004] The second meaning is that during the charging process, the battery is not charged scientifically, which affects the capacity ...

AI Technical Summary

Problems solved by technology

[0008] The reason for the lack of current products is that there is no constant current and pulse charging circuit, and this circuit has a relatively simple circuit, and can flexibly adjust the relationship between charging and stopping, and the second is that it does not have a limited voltage. A circuit that combines the end of charging (this method is suitable for activated batteries) and the end of timing (this method is suitable for charging non-activated batteries and a large class of batteries such as acid)

The third is that there is no way to use active components for conversion to solve the problem that the charging tube is fragile

If the switch tube is in a pulsed state, it is more likely to become damaged and increase the overall scrapping of the charger

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