CN204886352U - Silicon controlled rectifier formula pulse constant current charger - Google Patents

Abstract

Silicon controlled rectifier formula pulse constant current charger belongs to the electronic technology, by constant current power supply, and silicon controlled rectifier formula battery charging unit, pulse unit, process indicating units regularly finishes the unit, selected cell, the voltage limiting finishes unit, load unit, trickle resistors. Constant current power supply provides the constant current for each unit, it charges to form power of invariablenes current, nevertheless silicon controlled rectifier battery charging unit receives pulse unit's control again, consequently, charge and pulse form, there is the crossbow to finish the unit and regularly finish two kinds of end modes of unit in this measure, the end and regularly count end that is full of behind the electricity promptly, select by selected cell, the mutual noninterference of two units, and high flexibility and high convenience are obtained, be applicable to the battery of various capacity, after silicon controlled rectifier formula battery charging unit closes, provide the sustaining trickle by trickle resistance to the battery, the back is implemented in this measure, easy for manufacture, easy debugging, the production of very suitable micro enterprises.

Description

SCR type pulse constant current charger

Technical field

Belong to electronic technology field.

Background technology

Along with enriching of the modern life, get more and more by the kind of the electrical equipment of battery, as digital machine machine, mobile phone, etc., also there is a lot of charger kind for this reason, but also existed about low-carbon environment-friendly charging circuit kind in these kinds.

Its meaning one is, present product, charging supervisor wherein, and be namely be communicated with the loop triode with the charging turned off, easily damage, once damage, this charger just becomes rubbish.According to statistics, this fault becomes the major failure point of charger, just becomes rubbish because this point damages, a kind of very large waste, (if go to repair, because relate to repair cost, and the cost that user goes to repair shop to contact, so people usually lose).

Its meaning two is, due in charging process, the scientific charging that when not charging to battery, row is maximum, therefore affect capacity and the life-span of battery, so there is data to comment on, chargeable battery is not usually damaged, but is filled bad.

Reason one is, as before battery un-activation, needs the charging of battery long period to activate.A lot of new battery seller illustrates and needs activation three times.Battery charge time after activating will shorten greatly.But in the epoch of high rhythm, the performance of charger is advanced not, user can only by idea behaviour.It is usually general and row.Because this pass is not managed, activate and do not put in place, or the situation of battery damage increases, change probability and increase.

Reason two does not adopt good charging modes in charging process, and a lot of data is all thought, stops if adopt the edge of pulse to fill limit, or the mode that limit is put; If adopt the mode of constant current source charging, will have good effect, this effect not only shows that capacity and life-span are not easily damaged.(its capacity is larger, and negative role is larger), even has certain repair to the battery damaged.And can make be charged well by rechargable battery to put in place.Have a lot of advantages.

Reason three, this enterprise is applying for security personnel's product line for the previous period, and these series of products must reserce cell, and this kind of battery is the acid battery that capacity is larger.A lot of is not the electronic product carried with, and is usually this sealed type, price is lower, capacity is larger acid battery.And this kind of acid battery, nearly all data as one man thinks that best mode adopts to fill while put or mode that limit is stopped, this not only reduces lead acid accumulator internal electrical chemical side reactions in charging process---the gassing rate that the electrolysis of water produces, and to seriously polarization and cause the lead acid accumulator of inefficacy to also have repair.

Present product is not enough, and reason one is, also not with the circuit that a kind of constant current is also charged in a pulsed fashion, and this circuit has simpler and more direct circuit, and there is flexibly adjustment charging and the relation of stopping, two is do not have the circuit namely having pressure limiting to charge to terminate (this mode is well suited for the battery activated) to terminate (this mode is well suited for unactivated battery and charging to large class batteries such as acidity) with timing to combine.Three is also do not have a kind of active do conversion to solve the perishable problem of charging valve.Highly significant, because tool statistics, for the charging circuit of non-pulse formula, its switch control rule pipe is all the emphasis of fault to this problem, and the Push And Release of this circuit for once property.If allow switching tube be in the state of pulse, more easily become the probability of infringement, the entirety increasing charger is scrapped.

Low-carbon (LC) is a kind of civilized life mode that society advocates.Should pick up from small place.Reducing the scrappage to charger and battery, is exactly a kind of low-carbon (LC) life style very well.So just be beneficial to the permanent progress and development of society.

Summary of the invention

Main purpose of the present utility model is, innovate a kind of controllable silicon, for controlling to charge out, with the control of closing, in conjunction with the vibration of separation member formation, the constant-current source of three ends formation, form the constant current charge form of pulsed, and the end two kinds devising the end after being full of electricity and timer counter is selected, facilitate, to adapt to various types of battery flexibly.

The measure adopted is:

1, SCR type pulse constant current charger is by constant-current supply, SCR type charhing unit, pulse unit, process indicating member, and timing end unit, selected cell, pressure limiting end unit, load unit, trickle resistance forms jointly.

Wherein: SCR type charhing unit by the controllable silicon that charges, trigger resistance, form innovation silicon controlled negative electrode series diode and form: charging silicon controlled anode connects the output of constant-current supply, trigger resistance is connected on charging silicon controlled anode and controls between pole, charging silicon controlled negative electrode becomes the output of SCR type charhing unit after connecing composition innovation silicon controlled negative electrode series diode.

Constant-current supply is made up of three-terminal voltage-stabilizing, constant current adjustable resistance and constant current limiting resistance: the input of three-terminal voltage-stabilizing connects rectification and exports, the output of one termination three-terminal voltage-stabilizing of constant current adjustable resistance, become the output of constant-current supply after another termination constant current adjustable resistance of constant current adjustable resistance, the earth terminal of three-terminal voltage-stabilizing is connected in the output of constant-current supply.

Trickle resistance is connected between the output of constant-current supply and the output of SCR type charhing unit.

Pulse unit is that a complementary type oscillating circuit is formed, and is made up of inclined resistance, the lower inclined resistance of vibration, integrating capacitor, clamp diode in vibration P pipe, vibration N pipe, integrating resistor, vibration.

The output of one termination constant-current supply of integrating resistor, the other end is two-way, one tunnel connects the emitter of vibration P pipe, another road connects integrating capacitor to ground wire, and the collector electrode of vibration P pipe connects with the base stage of vibration N pipe, the grounded emitter line of vibration N pipe, the collector electrode of vibration N pipe connects the base stage of vibration P pipe, the output of a termination constant-current supply of inclined resistance in vibration, the base stage of another termination vibration P pipe of inclined resistance in vibration, between the base stage that the lower inclined resistance of vibration is connected on vibration P pipe and ground wire; Clamp diode is connected on charging silicon controlled and controls between the collector electrode of pole and vibration N pipe.

Process indicating member indicates protective resistance to form by process indicator light and process.

Process indicator light and process indicate protective resistance to connect, and are connected between the output of constant-current supply and the collector electrode of vibration N pipe.

Selected cell is made up of selector switch, selection diode one, selection diode two: select the negative pole of diode one to connect the normally-closed contact of selector switch, the positive pole of diode one is selected to connect the output of pressure limiting end unit, the negative pole of diode two is selected to connect the normally opened contact of selector switch, the positive pole of diode two is selected to connect the counting central point of end counter in timing end unit, the transfer contact earth connection of selector switch.

Pressure limiting end unit is made up of resistance inclined under adjustable resistance inclined in protective resistance inclined in pressure limiting, pressure limiting, pressure limiting, pressure limiting finishing control diode: in pressure limiting, inclined protective resistance is connected with adjustable resistance inclined in pressure limiting; be connected between the output of SCR type charhing unit and the output of pressure limiting end unit; between the output that under pressure limiting, inclined resistance is connected on pressure limiting end unit and ground wire; the positive pole of pressure limiting finishing control diode connects the output of pressure limiting end unit, and the negative pole of pressure limiting finishing control diode connects the base stage of vibration N pipe.

Timing end unit is by end counter, counting electric capacity, counting adjusting resistance, counting protective resistance, timing failure of oscillation performs diode, timing finishing control diode, reset electric capacity, discharge diode, clearing resistance forms: end counter has three ends that vibrate, first vibration termination counting electric capacity is to the counting central point that shakes, second vibration termination counting adjusting resistance is to counting central point, 3rd vibration termination counting protective resistance is to counting central point, timing failure of oscillation performs diode and is connected between the ultimate output of end counter and counting central point, timing finishing control diode is connected between the output of end counter and the base stage of vibration N pipe.The one end resetting electric capacity is connected with constant-current supply output, and the other end resetting electric capacity is two-way, and a road connects and resets the clear terminal of resistance to end counter, and another road connects discharge diode to ground wire.

Load unit shows branch road by by rechargable battery and forms with contacting: contact and show a route contact finger and show protective resistance and contact indicator light and be in series; battery terminal contact display branch road is connected on by between the positive pole of rechargable battery and ground wire; the output of SCR type charhing unit is connect, by the minus earth line of rechargable battery by the positive pole of rechargable battery.

2, composition innovation silicon controlled negative electrode series diode is that two face fit type Diode series form.

3, the controllable silicon that charges is that one-way SCR is welded.

4, count electric capacity be two electrochemical capacitors be welded into without polar form, the negative pole of two electrochemical capacitors is connected, and the positive pole of an electrochemical capacitor connects the first vibration end, and the positive pole of another electrochemical capacitor connects counting central point.

Further illustrate:

One, operation principle explanation.

After opening power supply, all unit are started working, and wherein SCR type charhing unit is by the control of pulse unit vibration, and forming impulse form, because the power supply of SCR type charhing unit is provided by constant-current supply, is therefore again constant current charge.

When not contacted by rechargable battery, the contact indicator light in battery terminal contact display branch road has not worked, because the electric current of this part instruction is not when plugging alternating current, only derives from battery.Now, instruction user should be clipped by rechargable battery.

In the present invention, there are two kinds of complete charge modes, available.One is that pressure limiting terminates mode, this mode is after battery is full of electricity, exceed pressure limiting threshold values, vibration N in trigger impulse unit manages (5.2 in Fig. 2), make the vibration failure of oscillation in impulse hunting unit, vibration N has now managed as low level clamper in SCR type charhing unit the control pole of controllable silicon (3.21 in the Fig. 2) that charge, thus SCR type charhing unit is closed, and stops the charging to battery.Another kind of for regularly terminating mode, for the battery that some need activation, it has requirement to the time, and therefore, timing terminates to be exactly after a certain time, the ultimate output of end counter (8.1 in Fig. 2) exports high pressure, vibration N in trigger impulse unit manages, and vibration N manages the controllable silicon in clamper SCR type charhing unit again, closes SCR type charhing unit, stop charging, the ultimate output of end counter simultaneously makes the vibration failure of oscillation of end oscillator.These two kinds are terminated mode, are through selected cell and select, and facilitate flexibly.

After charging terminates, SCR type charhing unit is closed, and now connected trickle resistance (20 in Fig. 2) is to the tiny stream electric current being provided required maintenance by rechargable battery.

Two, line feature analysis.

1, the feature of constant-current supply and explanation.

This unit is made up of three-terminal voltage-stabilizing (2.11 in Fig. 2), constant current adjustable resistance (2.12 in Fig. 2), constant current limiting resistance (2.5 in Fig. 2).

Three-terminal voltage-stabilizing is very outstanding voltage stabilizing circuit, is connected to become the mode of constant current, so exporting is constant current, constant current adjustable resistance and constant current limiting resistance together form the adjustment to constant current, and its constant current limiting resistance is the restriction to constant current adjustable resistance minimum value.

2, the explanation of selected cell.

This unit is by selector switch (9.1 in Fig. 2), selection diode one (9.2 in Fig. 2), selection diode two (9.3 in Fig. 2).Its element is few, but flexibility is strong, forms the selection of two kinds of done states, and at the end of selection pressure limiting, timing terminates to be failure to actuate, and at the end of selection timing, pressure limiting terminates inoperative.Its benefit be when battery need activate, as first time charging mobile phone battery or other battery time, need charging 12 hours, or longer time charging, now just can select timing terminate, increase selectivity.

3, pressure limiting end unit.

Terminate in selection pressure limiting, after battery is full of electricity, start when exceeding threshold voltage.

Be made up of resistance (13.3 in Fig. 2) inclined under adjustable resistance (13.2 in Fig. 2) inclined in protective resistance (13.1 in Fig. 2) inclined in pressure limiting, pressure limiting, pressure limiting, pressure limiting finishing control diode (13.5 in Fig. 2).

In pressure limiting, inclined protective resistance can adjust starting resistor neatly, again because of adjustable resistance inclined in pressure limiting of having connected, so can not produce excessive deviation in debug process, so start and stop successful.

After battery is full of electricity, exceed threshold voltage, through pressure limiting finishing control diode triggered vibration N pipe, close controllable silicon charhing unit.

4, timing end unit.

The battery having the charging interval to require for some and designing, terminate have selected timing, end counter starts counting immediately.Performed diode (8.8 in Fig. 2), timing finishing control diode (8.9 in Fig. 2) by end counter (8.1 in Fig. 2), counting electric capacity (8.2 in Fig. 2), counting resistance (8.3 in Fig. 2), counting protective resistance (8.5 in Fig. 2), timing failure of oscillation, reset electric capacity (8.10 in Fig. 2); discharge diode (8.11 in Fig. 2), resets resistance (8.12 in Fig. 2) composition.

Counting electric capacity (8.2 in Fig. 2), counting resistance (8.3 in Fig. 2), counting protective resistance (8.5 in Fig. 2) are connected on three vibration ends of end counter respectively; its major function to carry out frequency adjustment, thus make timer conter have the function of adjustable timing.

Reset electric capacity (8.10 in Fig. 2), discharge diode (8.11 in Fig. 2), the effect resetting resistance (8.12 in Fig. 2) is: start counting at every turn, all resets end counter, makes the time consistency of each counting.

Producing vibration with the principle of frequency-adjustable is, counting resistance is made up of the branch road of count frequency limiting resistance with counting resistant series, is all vibration adjustable member, the RC oscillating circuit of formation with counting electric capacity.The counting resistance that count frequency limiting resistance forms with counting resistance is that frequency adjusts branch road, if the value of counting resistance is large, then long to the time of counting capacitor charging and electric discharge, then period of oscillation is longer.So the resistance of frequency adjustment branch road can become the reason of frequency-adjustable.The reason that the cycle that is to say is adjustable.At frequency adjustment branch road, count frequency limiting resistance is the restriction to counting resistance minimum value.

Except can adjusting frequency, another feature to be counting electric capacity be have employed that two electrochemical capacitors are formed without polar form, the electric leakage of electric capacity thus can be made to become very little, thus vibrate very reliable, not easily stop polarization, relative frequency is accurate simultaneously, thus timing accurately, meets the requirement of mill run.

When regularly when time is up, main generation two acts on greatly, and one is that the ultimate output of end counter exports a high position, all the time Triggered Oscillation N manages, make pulse unit failure of oscillation, vibration N pipe is always low level, and thus SCR type charhing unit is always disconnection shape, so stop charging, two is effects that timing failure of oscillation performs diode, to the vibration failure of oscillation of end counter, the ultimate output of end counter is no longer changed, form a kind of latching circuit, can not overcharge conditions be produced.

Thus the feature one of this unit is, reliable in function, and the length of timing has very wide time range.Two is that timing is comparatively accurate, and one of them major reason terminates oscillating capacitance to have employed electrodeless electric capacity.Three is that peripheral element is few.This part is cheap simultaneously, workable.

5, SCR type charhing unit.

Silicon controlled innovation is controlled with the control pole realizing controllable silicon open circuit.

The internal structure of one-way SCR as shown in Figure 3, its inside is equivalent to the combination of a NPN triode and a PNP triode, its principle triggered is, when the NPN transistor base of inside has the forward bias of triggering, its collector electrode produces amplified current, this electric current is again the base current of PNP triode, and the collector current that this pipe amplifies becomes the base current of PNP triode, has thus been split into strong positive feedback.

The controllable silicon of innovation have been connected diode at its negative electrode, thus improve the forward bias voltage of NPN triode, last diode cathode of connecting becomes the false negative electrode of innovation silicon controlled, therefore when base stage and the false negative electrode short circuit of NPN triode, because forward bias increases, then the base current Rong Yang direct short-circuit of NPN pipe is to ground, and need not produce transistor effect by inner PN joint.So such benefit is, to saturated controllable silicon, as long as will the current potential of pole negative electrode be controlled lower than false negative electrode, just can realize the cut-off of saturated controllable silicon, and the way of the minimizing anode current introduced in teaching need not be adopted.

That is to say that namely controllable silicon has controllable silicon and easily trigger saturated character, has again and controls pole and reach the character allowing it end with after innovation controllable silicon.This character also obtains testing sufficient confirmation.

Controllable silicon charhing unit and pulse unit form the principle of charging and stop filling jointly: when the N that vibrates manages as time high-order, charging controllable silicon is filled triggering, forms charging, and when the N pipe that vibrates is for low level, charging controllable silicon is by clamper, and controllable silicon charhing unit is closed.

6, pulse unit.

This unit is an oscillating circuit, and in the height conversion control SCR type charhing unit of generation, two controllable silicons are in opening and disconnection, thus form impulse form.

Manage inclined resistance (5.4 in Fig. 2), the lower inclined resistance (5.5 in Fig. 2) of vibration, integrating capacitor (5.6 in Fig. 2), clamp diode (5.7 in Fig. 2) in (5.1 in Fig. 2), vibration N pipe (5.2 in Fig. 2), integrating resistor (5.3 in Fig. 2), vibration by vibration P to form.

Oscillation principle is, when the base stage of circuit debugging vibration P pipe has a small amount of base current, its collector current becomes the larger base current of vibration N pipe, at this moment the N pipe that vibrates produces larger collector current, become again the more big current of vibration P pipe base stage, form very large feedback, two pipes are saturated rapidly.At this moment the integrating capacitor that emitter is connected on of vibration P pipe is connected to, rapidly by two pipe collector electric discharges, when base voltage lower than vibration P pipe in the process of putting of the voltage of electric capacity, this pipe changes cut-off direction into by saturated immediately, and its collector current diminishes, and the base current of vibration N pipe diminishes, its collector current diminishes, the base current of impact vibration P pipe reduces conversely so again, produces strongly to the change in two pipe cut-off directions, until cut-off.Complete the period 1 of vibration.At this moment the integrating capacitor connecing vibration P pipe emitter starts again charging, and when the base voltage of voltage higher than this pipe, this pipe is open-minded, produces the strong row positive feedback of two pipes, produces second round, and the more cycle.

7, process display unit.

Protective resistance (6.1 in Fig. 2) and process indicator light (6.2 in Fig. 2) is indicated to form by process: to be connected between the output of constant-current supply and the collector electrode of vibration N pipe; when the N pipe that vibrates is for time high-order; process indicator light does not work; when vibration N pipe is low level; process indicator light is bright; therefore in whole charging process, process indicator light is glittering state, puts out when process indicator light after complete charge is long.

Outstanding advantage is had after the invention process:

1, this measure is to being achieved science charging by rechargable battery, enhancing maintenance, extend by the life-span of rechargable battery, decrease scrappage.

2, important economic worth is also had, for the value of common electronic product, as this series products of charger, do not having under famous and precious first material, so first is Value of Science & Technology, second is manually add expense, 3rd cost being only element, and the element that the present invention increases is limited.After this measure is implemented, one by rechargable battery life, and two is that capacity significant change can not occur, and therefore society is bound to accept, and admit its scientific value, therefore this excellent product can replace the product of inferior quality.Due in the modern life, this product purpose is very general, so can produce significant economic worth.

3, owing to adopting the charging modes of constant-current source, and at the end of according to being determined by the situation of rechargable battery voltage, the maintenance of science can be carried out to a lot of battery, science charging had a significant impact the life-span of battery and capacity, also have such argument so online, a lot of battery is not damaged, but is filled this bad saying, tell electrical appliance so much senior, propose the charger charging to used battery specialty clearly.

4, excellent performance of the present invention, thus one is that constant current value is adjustable is flexibly applicable to different kinds.Two is that constant current source charging adopts the time to adjust flexibly, and three is adjustable flexibly by the end voltage of rechargable battery, so can be applicable to polytype by rechargable battery, and charging science.Four is be not afraid of advantages such as overcharging after this measure also has charging to terminate.

5, each unit is connected science, and has accomplished comprehensive utilization, and thus line circuit is simplified, reliability is high.

6, easily produce, easily debug, be well suited for minuscule-type-enterprise and produce.

Accompanying drawing explanation

Fig. 1 is SCR type pulse constant current charger frame principle figure.

In figure: 1, signal input; 2, constant-current supply; 3, SCR type charhing unit; 5, pulse unit; 6, process indicating member; 8, timing end unit; 9, selected cell; 13, pressure limiting end unit; 16, load unit; 20, trickle resistance.

Fig. 2 is the engineering philosophy figure of SCR type pulse constant current charger.

In figure: 1, signal input; 2.11, three-terminal voltage-stabilizing; 2.12, constant current adjustable resistance; 2.5, constant current limiting resistance; 3.21, charge controllable silicon; 3.22, trigger resistance; 3.9, composition innovation silicon controlled negative electrode series diode; 3.10, the output of SCR type charhing unit; 5.1, vibrate P pipe; 5.2, vibrate N pipe; 5.3, integrating resistor; 5.4, inclined resistance in vibration; 5.5, the lower inclined resistance of vibration; 5.6, integrating capacitor; 5.7, clamp diode; 6.1, process instruction protective resistance; 6.2, process indicator light; 8.1, end counter; 8.2, electric capacity is counted; 8.3, resistance is counted; 8.5, protective resistance is counted; 8.7, central point is counted; 8.8, timing failure of oscillation performs diode; 8.9, timing finishing control diode; 8.10, electric capacity is reset; 8.11, discharge diode; 8.12, resistance is reset; 9.1, selector switch; 9.2, diode one is selected; 9.3, diode two is selected; 13.1, inclined protective resistance in pressure limiting; 13.2, inclined adjustable resistance in pressure limiting; 13.3, inclined resistance under pressure limiting; 13.5, pressure limiting finishing control diode; 16.1, by rechargable battery; 16.3, indicator light is contacted; 16.2, contact instruction protective resistance; 20, trickle resistance.

Fig. 3 is one-way SCR and the silicon controlled schematic diagram after innovating.

Fig. 3-1 is one-way SCR cut-away view.

In figure: 90, silicon controlled anode; 91, controllable silicon internal structure PNP triode; 92, controllable silicon internal structure NPN triode; 93, SCR control pole; 94, controllable silicon negative electrode.

Fig. 3-2 is innovation controllable silicon figure.

In figure 90, silicon controlled anode; 91, controllable silicon internal structure PNP triode; 92, controllable silicon internal structure NPN triode; 93, SCR control pole; 94, controllable silicon negative electrode; 95, the diode of controllable silicon negative electrode series connection is innovated; 96, the false negative electrode of controllable silicon is innovated.

Fig. 4 is the line map of the dummy load required for checkout.

In figure: 3.10, the output of SCR type charhing unit; 16.2, contact instruction protective resistance; 16.3, indicator light is contacted; 22.2, inclined limit value resistance in dummy load; Inclined adjustable resistance in 22.1 dummy loads; 22.3, inclined resistance under dummy load; 22.5, dummy load triode; 22.6, dummy load collector resistance; 23, the red test pencil of voltmeter; 24, voltmeter black meter pen.

Embodiment

Fig. 1, Fig. 2, Fig. 3, Fig. 4 are the concrete a kind of modes implemented.

One, element is selected: composition innovation silicon controlled negative electrode series diode is that two face fit type Diode series form.All controllable silicons are one-way SCR and are welded.Charging crossover connection is NPN triode.Diode adopts face bonded type diode, and other resistor-capacitor unit is without particular/special requirement.

Two, making sheet, welding: make circuit control panel according to Fig. 2, and the schematic diagram welding of pressing map interlinking 2.

Three, energising checks and debugging.

1, to energising inspection and the debugging of constant current unit.

A, as shown in Figure 4, welds a dummy load and replaces by rechargable battery.Be linked to be adjustable voltage-stabiliser tube analog circuit with a triode, replace being become dummy load by rechargable battery.Rear title dummy load.Connect to charge between output and ground with the voltage of universal instrument.

The resistance of B, adjustment dummy load, the now written instructions of ammeter do not change.If correct, illustrate that constant-current source is working properly.

The resistance of C, regulating constant leakage resistance, makes its constant current value meet the requirements.

Supplemental instruction, the principle of adjustable voltage-stabiliser tube analog circuit is linked to be with a triode, when the upper inclined resistance of this pipe uprises, the voltage of charging end will increase the bias voltage that just can puncture this pipe, this pipe is made to enter magnifying state, the collector voltage of this dummy load triode has a scope changed, and thus can be modeled to a different voltage stabilizing didoe, thus can simulate the value of 6 volts, 12 volts, 18 volts 24 volts.

2, to the energising inspection of controllable silicon charhing unit.

As Fig. 4 welds a dummy load, be adjusted to situation during underfill electricity.

Between positive pole ammeter being connected in parallel on a diode in composition innovation silicon controlled negative electrode series diode and negative pole.

When the N pipe of vibrating current collection very low level time, namely charging silicon controlled negative electrode no-output is the instruction of ammeter no current.

When the current collection of the N pipe that vibrates is very high-order, charging silicon controlled negative electrode has voltage, is namely that ammeter has electric current to indicate.

Above-mentioned 2 correct, illustrating that SCR type charhing unit operating state is correctly, if incorrect, is then that line is wrong.

3, to the energising inspection of selected cell.

At the end of selection pressure limiting, survey the first vibration end of end counter (8.1 in Fig. 2) with oscillographic hot junction, cold junction earth connection, oscilloscope forms display without figure, represents that end counter does not work.At the end of selection timer counter, by dummy load debugging to when being full of electricity when, survey positive pole (13.5 in Fig. 2) no-voltage of pressure limiting finishing control diode with voltmeter, show that pressure limiting end unit is filled clamper.

The inspection of 4, pressure limiting end unit and debugging.

Debugging dummy load, produces different magnitudes of voltage, as 6 volts, and 12 volts, 18 volts, 24 volts.

Regulate the value of adjustable resistance (13.2 in Fig. 2) partially in pressure limiting; the collector electrode making vibration N pipe respectively 6 volts, 12 volts, 18 volts of 24 volts of values time; Shi Jun has 0 output, otherwise should to change in pressure limiting the value of protective resistance (13.1 in Fig. 2) partially on inclined adjustable resistance (13.2 in Fig. 2) and pressure limiting.

5, the timing detection of end unit and debugging.

The inspection of A, operating state.

With the one end in oscillographic hot junction connection count electric capacity (8.2 in Fig. 2), cold junction ground connection.Oscilloscope has the display of vibration figure.

This circuit is peripheral simple, after having the connection adopting electrodeless electric capacity, can not leak electricity in addition, and after being powered up, oscilloscope there will be the display of vibration figure immediately.

If incorrect, it is wrong to be only that element is welded to connect.

B, frequency-adjustable inspection

Adjustment counting resistance (8.3 in Fig. 2) resistance, makes the scope of regulating frequency meet the requirement of design, can calculate period of oscillation by the frequency of vibration, can according to period of oscillation, and the frequency division progression of internal counter, calculates the scheduled time of timing.And can confirm with by fast debugging method.Namely this method is newly increase the very little resistance of a resistance at counting resistance two ends, and now the ultimate output of end counter has output very soon.

C, the detection of executive circuit is terminated to timing.

Use fast debugging method.Namely this method is newly increase the very little resistance of a resistance at counting resistance two ends, and now the ultimate output of end counter has output very soon, and voltmeter surveys ultimate output for high-order.

Illustrate: by fast debugging ratio juris be, when after the resistance that also upper new resistance is little, the quickening that frequency is extremely acute, cycle pole drastic change is short, and thus timing ic internal counter has result to export very soon.

6, the inspection of the energising of paired pulses unit frequency and debugging.

Adjustment duration of oscillation: the collector electrode being connected on vibration N pipe with oscillographic red test pencil, black meter pen ground connection.

Observe oscillatory condition, make it frequency and meet the requirements.If frequency is undesirable, adjustment integrating resistor and integration capacitor value size, if frequency is too fast, makes resistance or capacitance increase, otherwise reduce its value.

7, to the inspection of display.

A, in load unit battery terminal contact display check when install by rechargable battery; and when not switching on power; if contact indicator light (16.3 in Fig. 2) Ying Liang, incorrect, may be that the weldering of contact indicator light polarity is anti-, or contact instruction protective resistance (16.2 in Fig. 2) resistance be excessive.

B, to fill process display inspection.

After energising, the state output terminal of charge display should be similar to vibration three gate output terminal state; the process indicator light (6.2 in Fig. 2) be linked to be is luminous in charging process; at the end of initial termination unit; should put out; as phenomenon is not inconsistent; the resistance being then process instruction protective resistance (6.1 in Fig. 2) is excessive, or process indicator light damages.

8, to the detection of tiny stream electric current.

Be connected on by ammeter on trickle resistance (20 in Fig. 2) branch road, debugging tiny stream resistance, makes tiny stream electric current meet the requirements.Its rule is that more small area analysis is larger for resistance.Otherwise resistance more big current is less.

Claims (4)

1. SCR type pulse constant current charger, is characterized in that: by constant-current supply, SCR type charhing unit, pulse unit, process indicating member, timing end unit, selected cell, pressure limiting end unit, load unit, and trickle resistance forms jointly;

Wherein: SCR type charhing unit by the controllable silicon that charges, trigger resistance, form innovation silicon controlled negative electrode series diode and form: charging silicon controlled anode connects the output of constant-current supply, trigger resistance is connected on charging silicon controlled anode and controls between pole, charging silicon controlled negative electrode becomes the output of SCR type charhing unit after connecing composition innovation silicon controlled negative electrode series diode;

Constant-current supply is made up of three-terminal voltage-stabilizing, constant current adjustable resistance and constant current limiting resistance: the input of three-terminal voltage-stabilizing connects rectification and exports, the output of one termination three-terminal voltage-stabilizing of constant current adjustable resistance, become the output of constant-current supply after another termination constant current adjustable resistance of constant current adjustable resistance, the earth terminal of three-terminal voltage-stabilizing is connected in the output of constant-current supply;

Trickle resistance is connected between the output of constant-current supply and the output of SCR type charhing unit;

Pulse unit is that a complementary type oscillating circuit is formed, and is made up of inclined resistance, the lower inclined resistance of vibration, integrating capacitor, clamp diode in vibration P pipe, vibration N pipe, integrating resistor, vibration:

The output of one termination constant-current supply of integrating resistor, the other end is two-way, one tunnel connects the emitter of vibration P pipe, another road connects integrating capacitor to ground wire, and the collector electrode of vibration P pipe connects with the base stage of vibration N pipe, the grounded emitter line of vibration N pipe, the collector electrode of vibration N pipe connects the base stage of vibration P pipe, the output of a termination constant-current supply of inclined resistance in vibration, the base stage of another termination vibration P pipe of inclined resistance in vibration, between the base stage that the lower inclined resistance of vibration is connected on vibration P pipe and ground wire; Clamp diode is connected on charging silicon controlled and controls between the collector electrode of pole and vibration N pipe;

Process indicating member indicates protective resistance to form by process indicator light and process;

Process indicator light and process indicate protective resistance to connect, and are connected between the output of constant-current supply and the collector electrode of vibration N pipe;

Selected cell is made up of selector switch, selection diode one, selection diode two: select the negative pole of diode one to connect the normally-closed contact of selector switch, the positive pole of diode one is selected to connect the output of pressure limiting end unit, the negative pole of diode two is selected to connect the normally opened contact of selector switch, the positive pole of diode two is selected to connect the counting central point of end counter in timing end unit, the transfer contact earth connection of selector switch;

Pressure limiting end unit is made up of resistance inclined under adjustable resistance inclined in protective resistance inclined in pressure limiting, pressure limiting, pressure limiting, pressure limiting finishing control diode: in pressure limiting, inclined protective resistance is connected with adjustable resistance inclined in pressure limiting, be connected between the output of SCR type charhing unit and the output of pressure limiting end unit, between the output that under pressure limiting, inclined resistance is connected on pressure limiting end unit and ground wire, the positive pole of pressure limiting finishing control diode connects the output of pressure limiting end unit, and the negative pole of pressure limiting finishing control diode connects the base stage of vibration N pipe;

Timing end unit is by end counter, counting electric capacity, counting adjusting resistance, counting protective resistance, timing failure of oscillation performs diode, timing finishing control diode, reset electric capacity, discharge diode, clearing resistance forms: end counter has three ends that vibrate, first vibration termination counting electric capacity is to the counting central point that shakes, second vibration termination counting adjusting resistance is to counting central point, 3rd vibration termination counting protective resistance is to counting central point, timing failure of oscillation performs diode and is connected between the ultimate output of end counter and counting central point, timing finishing control diode is connected between the output of end counter and the base stage of vibration N pipe, the one end resetting electric capacity is connected with constant-current supply output, and the other end resetting electric capacity is two-way, and a road connects and resets the clear terminal of resistance to end counter, and another road connects discharge diode to ground wire,

Load unit shows branch road by by rechargable battery and forms with contacting: contact and show a route contact finger and show protective resistance and contact indicator light and be in series; battery terminal contact display branch road is connected on by between the positive pole of rechargable battery and ground wire; the output of SCR type charhing unit is connect, by the minus earth line of rechargable battery by the positive pole of rechargable battery.

2. SCR type pulse constant current charger according to claim 1, is characterized in that: composition innovation silicon controlled negative electrode series diode is that two face fit type Diode series form.

3. SCR type pulse constant current charger according to claim 1, is characterized in that: charging controllable silicon is that one-way SCR is welded.

4. SCR type pulse constant current charger according to claim 1, it is characterized in that: counting electric capacity be two electrochemical capacitors be welded into without polar form, the negative pole of two electrochemical capacitors is connected, the positive pole of an electrochemical capacitor connects the first vibration end, and the positive pole of another electrochemical capacitor connects counting central point.