CN2049427U

CN2049427U - Quickly charging unit

Info

Publication number: CN2049427U
Application number: CN 89203983
Authority: CN
Inventors: 王鸿麟; 马文计; 邱允和
Original assignee: XI'AN COMMUNICATION COLLEGE
Current assignee: XI'AN COMMUNICATION COLLEGE
Priority date: 1989-04-03
Filing date: 1989-04-03
Publication date: 1989-12-13

Abstract

The utility model belongs to a battery charger, comprising a charging circuit, a discharging circuit, a triggering circuit for charge and discharge, a sequence control circuit for charge and discharge, an automatic stop system for charge, etc. The utility model is characterized in that controlled silicon control switches are arranged in the charging circuit, the discharging circuit and a power supply circuit, the structure of the triggering circuit for charge and discharge, the sequence control circuit for charge and discharge, the automatic stop system for charge and other function circuits is simplified, and the utility model has the advantages of low cost and convenient maintenance.

Description

Quickly charging unit

The utility model belongs to a kind of battery charging equipment.

In prior art, common oversize use of charger charging interval is very inconvenient, developed the employing pulse current charge in recent years, the fast mold filling formula of discharge depolarization, the waveform of charging current as shown in Figure 7, forward is a charging pulse among the figure, negative sense is discharge depolarization pulse, the basic structure of this quick charger is referring to Fig. 8, it comprises charging circuit, discharge circuit, the charging circuits for triggering, discharge trigger circuit and discharge and recharge sequential control circuit and charging automatic stop system etc., wherein all be provided with switching circuit in charging circuit and the discharge circuit, discharge and recharge the break-make moment of sequential control circuit by charging circuits for triggering and discharge trigger circuit control said switching circuit, thereby make charging circuit and discharge circuit finish its charging process according to the sequential that charges and discharge shown in Figure 7 to storage battery, this quick charger can not only shorten the charging interval, can also save a large amount of electric energy, life-span to storage battery can not produce tangible influence yet simultaneously, though this quick charger technical development is very fast, but apply very difficult, main cause is because circuit structure is very complicated, cause maintenance difficult, cost an arm and a leg a small-sized quick charger price all about thousand yuan, therefore simplify circuit, reduced cost into the subject matter of applying quick charger at present.

The purpose of this utility model is the present situation at the quick charger technical development, simplifies its circuit structure, and its cost is reduced, and is easy to maintenance, so that apply as early as possible.

Solution of the present utility model is as follows: the control switch of controllable silicon electronic switch as charging or discharging current is set in described charging circuit and discharge circuit, described charging circuits for triggering are that a pulse oscillator and an one-level pulse amplifier that is connected into by unijunction transistor and Resistor-Capacitor Unit constitutes, described discharge trigger circuit is a pulse oscillator that is connected into by unijunction transistor and Resistor-Capacitor Unit, the described sequential control circuit that discharges and recharges is a multivibrator that is connected into by 555 time base apparatus spares and Resistor-Capacitor Unit, described charging automatic stop system is by the electric resistance partial pressure detector that is connected on the storage battery two ends, is connected on the reverse-blocking tetrode thyristor circuit in the power circuit and the circuits for triggering of this reverse-blocking tetrode thyristor and constitutes.

The utility model has all adopted controllable silicon as control switch in charging circuit, discharge circuit and power circuit, the structure that discharges and recharges circuits for triggering, sequential control circuit and charging automatic stop system functional circuit is simplified greatly, cost is reduced to about 60 yuan, the simplification of sort circuit simultaneously also helps the integrated of circuit from now on very much, cost is reduced more, keep in repair more convenient.

Explanation with reference to the accompanying drawings below.

Fig. 1. circuit theory diagrams of the present utility model.

Fig. 2. the waveform schematic diagram of timing control signal V1.

Fig. 3. the waveform schematic diagram of charging trigger impulse V2.

The waveform schematic diagram of Fig. 4 charging current I1.

Fig. 5. the waveform schematic diagram of discharge trigger impulse V3.

Fig. 6. the waveform schematic diagram of discharging current I2.

Fig. 7. pulse current charge, the fast mold filling formula of discharge depolarization waveform schematic diagram.

Fig. 8. the block diagram of quick charger.

Referring to Fig. 1, be connected into the charge circuit of storage battery by one group of secondary coil, controllable silicon 1,2 and the storage battery 3 of transformer 18, controllable silicon 1,2 is finished the phase control rectifier effect, to regulate the size of charging current, be connected into the discharge loop of storage battery by storage battery 3, controllable silicon 4 and electric capacity 5, switching tube 6 is discharge control switches of electric capacity 5; The pulse oscillator that is connected into by unijunction transistor 7 and Resistor-Capacitor Unit and constitute the charging circuits for triggering by the pulse amplifier that triode 11 is connected into; Discharge trigger circuit is a pulse oscillator that is connected into by unijunction transistor 12 and Resistor-Capacitor Unit, and switching tube 13 plays the inverter effect; Be connected into multivibrator as the charge and discharge sequential control circuit by 555 time base apparatus spares 14 and Resistor-Capacitor Unit, the waveform V1 of generation is referring to Fig. 2, and charging interval T1 is by the value decision of electric capacity 15 and resistance 1.6, and discharge time, T2 was determined by the value of electric capacity 15 and resistance 17.When V1 is high level, pulse oscillator 7 starting oscillations, the waveform of output charging trigger impulse V2 is referring to Fig. 3, V2 passes through two groups of secondary coils of pulse transformer 8 respectively to controllable silicon 1 after amplifying through pulse amplifier 11,2 door-plate, when supply voltage was positive half cycle, V2 arrived constantly, controllable silicon 1 triggering and conducting, controllable silicon 2 is in anti-state partially and ends, when supply voltage was negative half period, V2 arrived constantly, controllable silicon 2 triggering and conducting, controllable silicon 1 is because of being subjected to the reversed bias voltage automatic cut-off, so circulation, the waveform of charging current I1 is referring to Fig. 4, meanwhile, switching tube 6 conductings make electric capacity 5 by switching tube 6 discharges; When V1 is low level, unijunction transistor 7 ends, and the V2 of oscillator output equals zero controllable silicon 1,2 all are in cut-off state, I1 is zero, simultaneously, triode 13 ends, the output high level, make pulse oscillator 12 starting oscillations, output discharge trigger impulse V3, the waveform of V3 makes controllable silicon 4 conductings referring to Fig. 5, simultaneously, triode 6 ends, and then storage battery 3 and electric capacity 5 form the discharge loop of storage battery, and promptly storage battery 3 is to electric capacity 5 chargings, the waveform of discharging current I2 is referring to Fig. 6, thereby finish the charging process of one-period, so circulation reaches predetermined charging level value until storage battery.

Referring to Fig. 1, the power circuit of this machine is by transformer 18, bridge rectifier 10 again, and filter capacitor 9 and the pressurizer that is connected into by voltage-stabiliser tube 19,20, triode 21 constitute; In this power circuit, be provided with the control switch of a controllable silicon 22 as the output of control power supply, constitute resitstance voltage divider as the battery state of charge detector by resistance 23 and parallel resistance 24, switch 25 is selector switches of charging level predetermined value, switching circuit that is connected into by switching tube 26 and the circuits for triggering that are made of controllable silicon 22 inverter that 555 time base apparatus spares 26 are connected into.The charging automatic stop system that connects and composes this machine by foregoing circuit.The course of work is as follows: select a predetermined charging level value by selector switch 25 earlier, a promptly closed corresponding switch, when the level of storage battery 3 reached this value, a magnitude of voltage of detector output made switching tube 26 conductings, and its output places low level with 6 pin of device 27, then 3 pin of device 27 output high level adds to the door-plate of controllable silicon 22, make controllable silicon 22 conductings, short circuit voltage-stabiliser tube 20, then triode 21 ends, power circuit is output as zero, and entire machine quits work.

Claims

1, quick charger comprises charging circuit, discharge circuit, charging circuits for triggering, discharge trigger circuit, discharges and recharges sequential control circuit and charging automatic stop system and power circuit, it is characterized in that:

A, controllable silicon electronic switch 1,2 control switchs as charging and discharging currents are set in described charging circuit and discharge circuit,

B, described charging circuits for triggering are that a pulse oscillator and an one-level pulse amplifier 11 that is connected into by unijunction transistor 7 and Resistor-Capacitor Unit constitutes,

The described discharge trigger circuit of c is a pulse oscillator that is connected into by unijunction transistor 12 and Resistor-Capacitor Unit,

D, the described sequential control circuit that discharges and recharges are multivibrators that is connected into by 555 time base apparatus spares 14 and Resistor-Capacitor Unit,

E, described charging automatic stop system be by the electric resistance partial pressure detector that is connected on the storage battery two ends, is connected on the reverse-blocking tetrode thyristor 22 in the power circuit and the circuits for triggering of this reverse-blocking tetrode thyristor and constitutes.