Pulse-type double-selection finishing floating charger

Abstract

The invention discloses a pulse-type double-selection finishing floating charger, and belongs to the technical field of electronics. The floating charger consists of a constant current source, a process display unit, an interface unit, a charging unit, an annular oscillation unit, a voltage limiting finishing unit, a load unit, and a trickle resistor. The switching characteristics of a triode arecombined with the effective logic of an integrated circuit, thereby forming the annular oscillation unit, so as to control the charging unit to be on / off and form the pulse-type charger. The constantcurrent source is used for providing a current for the charging unit, so the charging mode is a mode of constant current charging. When a battery is charged fully, the voltage limiting finishing unitis started, the annular oscillation unit is enabled to output a low level, the interface unit is enabled to have no triggering voltage, and a bias current channel of the charging unit is turn off, andfinally the charging is stopped. The trickle resistor is used for providing a maintaining trickle current for the charged battery. In the annular oscillation unit, the output time of the high and lowlevels can be adjusted through the adjustment of the duty ratio, thereby achieving the action in the charging unit, achieving long charging time and short charging stopping time, and enabling the charging and stopping to reach an optimal proportion.

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., for which there are also many types of chargers, 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 become 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 and life of the...

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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