CN2181118Y

CN2181118Y - Quick charger for battery

Info

Publication number: CN2181118Y
Application number: CN 94203849
Authority: CN
Inventors: 刘玉清
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-23
Filing date: 1994-02-23
Publication date: 1994-10-26
Anticipated expiration: 2004-02-23

Abstract

A quick charger for battery is composed of rectifying circuit, indicator circuit, capacitor C1 and pulse generator circuit. The charged battery is used as an element in a charging circuit, and the duty ratio of pulses is automatically adjusted by the circuit according to the change of objective factors such as the voltage and the capacity of the battery during charging, so that the capacity of the battery can be quickly recovered; and has recovery effect on batteries with capacity reduced due to long storage period or over-discharge. The charger is suitable for charging No. 5 and No. 7 nickel-cadmium and zinc-manganese batteries.

Description

Quick charger for battery

The utility model relates to a single section battery quick charging device, it not only can charge to No. 5, no. 7 nickel-cadmium batteries, also has the effect of quick recovery capacity to disposable zinc-manganese battery moreover.

At present, the known single nickel-cadmium battery charger generally adopts low current charging, and the charging time is as long as about ten hours. For batteries with too long storage time or over-discharge, the charging efficiency is low.

The utility model aims at providing a quick charger, single No. 5 batteries only need 1 hour to fill. And has recovery effect on the battery with reduced capacity caused by overlong storage time or overdischarge.

The purpose of the utility model is realized like this: the commercial power is transformed by the transformer, then forms a bridge rectifier circuit by the diode for rectification, is supplied to the charging indicating circuit by the capacitance filtering, and is connected to the pulse generator through the charged battery to the negative end of the rectifier circuit. The utility model discloses charger technical adopted will be by a capacitive element in the rechargeable battery as the circuit, constitute a pulse generator with other circuits. The utility model has the characteristics of as follows: 1. when the charged battery is connected to the circuit, the pulse generator starts to oscillate, the charging speed is increased due to the fact that the instantaneous pulse amplitude is large, and the average current value is low, so that the battery cannot be damaged. 2. The charging and discharging method for the charging motor is characterized in that after the peak of the charging pulse, a corresponding negative pulse (relative to the terminal voltage of the battery) is generated, the battery is discharged at the moment, the voltage rises along with the increase of the capacity of the battery, the amplitude of the charging pulse is reduced, the corresponding negative pulse is increased, the average value of the current is reduced, and therefore the battery cannot generate heat and cannot be overcharged. 3. Because the utility model discloses charging circuit is pulse current great in the twinkling of an eye, consequently has very big excitation to the inside electric charge of battery and makes its motion accelerate, and the battery of this moment holding time overlength or overdischarge has the effect of restoring capacity.

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic circuit diagram of the present invention.

Fig. 2, 3, and 4 are front sectional views, plan views, and side sectional views.

In the figure, 1, a battery negative electrode spring, 2, a battery positive electrode plate, 3, an indicator light, 4, a transformer fixing frame, 5, a fastening screw, 6, a transformer, 7, a power plug, 8, 6,9, 3, 10, a transformer bracket, 11, a circuit board, 12 heat dissipation grooves, 13, a convex rib, 14 and a semicircular groove.

In FIG. 1, the primary side of the transformer T is connected to AC220V, and the secondary side is connected to the diode D ₁ ～D ₄ Of

In FIG. 1, the primary side of the transformer T is connected to AC220V, and the secondary side is connected to the diode D ₁ ～D ₄ The positive end of the bridge circuit is connected with the filter capacitor C ₁ The positive pole is connected with an indicating circuit (one path is connected with a light emitting diode D) ₇ Diode D ₅ D ₆ Forming; another route LED D ₈ Diode D ₉ D ₁₀ Composition). The pulse circuit being formed by a capacitor C ₂ Diode D ₁₁ D ₁₂ Formed by connecting in parallel, one end of the pulse circuit, the bridge circuit and the filter capacitor C ₁ Is connected with the negative terminal of the charged battery, the other end is connected with the negative terminal of the charged battery, the positive terminal of the charged battery is connected with the indicating circuit D ₇ 、D ₆ And D ₈ 、D ₁₀ Are connected to each other.

As can be seen from figures 2, 3 and 4, the utility model discloses a structure embodiment is 1, in the battery half crouches in two semi-circular groove 14 of machine that charges, the tank bottom respectively has two protruding muscle 13, makes the battery unsettled, and the tank bottom still opens there is groove 12 to the heat dissipation. The positive pole of the charged battery is connected with the positive end 2 of the charger, the negative pole of the charged battery is connected with the spring of the negative end 1 of the charger, and the No. 5 and No. 7 batteries can be fixed due to the strong elasticity of the spring. 2. Two

red indicator lights

3, 9 are placed above the charged positive pole to indicate whether the circuit is working. 3. The power plug 7 of the charger is fixed at the bottom of the charger without a power lead. 4 the transformer 6 in the charger box, the circuit board 11 all uses the fixed bolster 4, the complete machine is fastened with two screws 5.

Claims

1. A quick charger is installed in an insulating box, a transformer primary is connected with commercial power, a transformer secondary is connected with a rectifier bridge circuit, the positive end of the bridge circuit is connected with the positive end of an indicating circuit, and a capacitor C ₁ The positive end is connected, the negative end of the indicating circuit is connected with the positive electrode of the charged battery, the negative electrode of the charged battery is connected with the positive end of the pulse circuit, the negative end of the pulse circuit is connected with the bridge circuit and the capacitor C ₁ Is connected with the negative terminal, and is characterized in that: capacitor C ₂ Anode and diode D ₁₁ Cathode of (2), diode D ₁₂ The positive pole of the capacitor is connected with the negative pole of the charged battery, and the capacitor C ₂ Negative terminal, diode D ₁₁ Anode, diode D ₁₂ The negative electrode is connected with the negative end of the bridge circuit and the capacitor C ₁ The negative terminal is connected to form a pulse generator circuit.

2. The charger according to claim 1, wherein the charged battery is in an insulating case, the negative electrode is held by springs in two semicircular grooves, and the grooves have two ribs, respectively, so that the charged battery is used as a component of the circuit. Two light emitting diodes are correspondingly arranged above the positive electrode of the charged battery.