CN106712140A - Integrated timing type constant current charger - Google Patents
Integrated timing type constant current charger Download PDFInfo
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- CN106712140A CN106712140A CN201510522194.6A CN201510522194A CN106712140A CN 106712140 A CN106712140 A CN 106712140A CN 201510522194 A CN201510522194 A CN 201510522194A CN 106712140 A CN106712140 A CN 106712140A
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Abstract
The invention provides an integrated timing type constant current charger, belonging to the technical field of electronics. The integrated timing type constant current charger is formed by a P type constant current charging unit, a load unit, a timing unit, a starting unit, an interface unit, a prompt unit, and a trickle resistor. The constant current charging is used, and a timing mode is used in ending. When the time of the timing integrated circuit is up, a signal is output, the interface unit is disconnected, the P type constant current charging unit stops charging, a charging process indication lamp in the prompt unit is off, and a voice system emits voice prompt. The trickle resistor provides needed trickle current to a charged battery. At the beginning of each time of charging, the starting unit reset the timing integrated circuit, thus the time of each time of timing is consistent, unique double PNP type triodes are used to form a constant current charging circuit with automatic conversion and little possibility of damage, the PNP triodes are controlled by the switch-on and switch-off of the P type constant current charging unit in a measure, the triodes are connected to be a form of a constant current source, thus the triodes has the functions of switch-on and switch-off and a constant current source, with the symmetry of the lines of two triodes, the production and debugging are easy.
Description
Technical field
Belong to electronic technology technical field.
Background technology
With enriching for the modern life, the species with the electrical equipment of battery is more and more, such as security personnel's equipment, digital machine machine, and mobile phone, etc., is that this also occurs in that many charger species, but it is all kinds of to lack a kind of low-carbon environment-friendly charging circuit in these species.Its meaning one is that present product, charging supervisor therein is off the loop triode that shut-off is charged, and is easily damaged, once damaging, this charger is become for rubbish.It is reported that, this failure becomes major failure point, just as this point is damaged and turns into rubbish, it is a kind of very big waste,（If going to repair, because it is related to repair cost, and user removes the cost that repair shop contacts, so people are often to lose）.Its meaning two, due in charging process, row maximum scientific charging when not charged to battery, thus influence battery capacity and life-span,（The capacity of only pipe battery is smaller, influences small, but in Low Carbon World, we should prevent from small place）, battery is prematurely easily also changed into rubbish, that is, formed and wasted, and environment is polluted.（Refuse battery has pollution to environment）.Be not carried out charging it is maximum scientific the reason for one be present product or battery to be charged only with direct current mode, without using a kind of preferable mode, such as continuous current charges；Or though constant current source charging can be used, it is also there are some conveniences using upper or scientific, etc. not enough on the line, therefore should enrich and develop.
Low-carbon environment-friendly should be picked up from drop, should be picked up from trickle, so just beneficial to the permanent progress and development of society.
The content of the invention
There is charge function to overcome existing charge prepd, but to environmentally friendly not enough weakness, the present inventor have developed integrated timing constant current charger, double PNP type triodes composition automatic conversion that it employs uniqueness does not allow flimsy constant-current charging circuit, it carries out precise match with timing ic and can realize that the charging of science is charged to rechargeable battery again, so as to maximized extension charger and the life-span and capacity for being electrically charged pond, the environmental protection of society is realized.
The technical measures for being used are：
1st, by p-type constant-current charge unit, load unit, timing unit, start element, interface unit, Tip element, trickle resistance is collectively constituted integrated timing constant current charger.
Wherein：Trickle resistance is connected between input and the output of p-type constant-current charge unit.
P-type constant-current charge unit is made up of constant-current charge operating circuit, constant-current charge fallback circuit, switching diode and steering diode.
Constant-current charge operating circuit is made up of instrumentation tubes, work constant current resistance, current limliting luminous tube two, biasing resistor two；Constant-current charge fallback circuit is constituted by backing up pipe, backup pipe constant current resistance, current limliting luminous tube one, biasing resistor one.
The emitter stage of instrumentation tubes connects work constant current resistance to power input, the indirect current limliting luminous tube two of the base stage of power input and instrumentation tubes, biasing resistor two is connected between the colelctor electrode of interface triode in the base stage of instrumentation tubes and interface unit, the emitter stage of backup pipe connects backup constant current resistance to power input, the indirect current limliting luminous tube one of the base stage of power input and backup pipe, switch the base stage of the positive termination backup pipe of diode, negative terminal is two-way, the negative pole of steering diode is connect all the way, the positive pole of steering diode connects the colelctor electrode of instrumentation tubes, another road connects biasing resistor one to the colelctor electrode of interface triode in interface unit, the colelctor electrode of instrumentation tubes is connected together with the colelctor electrode of backup pipe, output as p-type constant-current charge unit.
Load unit contacts indication light pipe by being electrically charged pond, and contact indicates protective resistance composition：The positive pole of battery connects the output of p-type constant-current charge unit, and negative pole ground wire, contact indication light pipe is connected on the two poles of the earth for being electrically charged pond with instruction protective resistance is contacted.
Start element is made up of differential circuit with differential triode；Differential circuit is made up of differential capacitance, discharge resistance.
Differential capacitance is connected between the base stage of power input and differential triode, discharge resistance one terminates the base stage of differential triode, discharge resistance other end ground wire, the grounded emitter line of differential triode, integrated circuit resets the pin of initiating terminal the 7th during the colelctor electrode of differential triode connects timing unit.
Timing unit resets electric capacity, protective resistance, the power supply voltage-stabiliser tube composition of integrated circuit by integrated circuit, oscillation resistance, oscillating capacitance：Oscillation resistance is made up of adjustable resistance with fixed resistance.
One termination power input of protective resistance, another pin of termination ic power end the 8th, the pin of integrated circuit the 8th connects positive pole one end of the power supply voltage-stabiliser tube of integrated circuit, the other end negative pole ground wire of the power supply voltage-stabiliser tube of integrated circuit, the integrated circuit vibration pin of 1 end the 6th connects oscillating capacitance to ground wire, the integrated circuit vibration pin of 2 end the 5th connects oscillation resistance and vibrates the pin of 1 end the 6th to integrated circuit, ground capacity is connected on integrated circuit and resets between the pin of initiating terminal the 7th and ground wire, the pin ground wire of integrated circuit ground terminal the 4th, the pin of integrated circuit timing output end the 2nd is the output of integrated circuit, that is to say the output of timing unit.
Interface unit is made up of triggering resistance with interface triode：The output of one termination timing unit of triggering resistance, trigger the base stage of the other end connection interface triode of resistance, the grounded emitter line of interface triode, the colelctor electrode of interface triode respectively with terminate Tip element, p-type constant-current charge unit biasing resistance two, biasing resistor one is connected.
Terminate Tip element to be made up of phonetic system and lamplight pointing system, phonetic system is made up of voice protective resistance, voice body, a termination IC input of voice protective resistance goes out the pin of 2 end the 3rd, another termination voice body of voice protective resistance to ground wire；Lamplight pointing system is made up of current-limiting resistance, process indicator lamp：One termination power input of current-limiting resistance, the colelctor electrode of another termination process indicator lamp of current-limiting resistance to interface triode.
2nd, timing ic uses HL2203.
Further illustrate：
1st, the constant current unit unit served as by a triode simultaneously with the switching tube and constant-current source of open circuit control by being powered.
What the energization and open circuit of p-type constant-current charge unit were controlled in measure is PNP triple-pole switch pipes, but the pipe has been linked to be the form of constant-current source again, so the triode inside p-type constant-current charge unit, has served as the control function of connection and shut-off, constant-current source dual-use function has been served as again.
Forming the principle of constant-current source is, because instrumentation tubes and backup pipe are symmetric circuits, therefore by taking instrumentation tubes as an example.Instrumentation tubes（In Fig. 2 5.1）Emitter stage connected work constant current resistance（In Fig. 2 5.2）Become negative-feedback.Simultaneously between one end of constant current resistance connection line and base stage, current limliting luminous tube two is connected to（In Fig. 2 5.3）, the effect of current limiting, when load current is excessive, and when having exceeded the threshold values of current limliting luminous tube one, base current will be shunted, and be no longer pass through triode amplification, hereby it is ensured that emitter current is certain value, thus as a kind of constant-current source.Why use luminous tube diode as current limiting tube, because it has luminous function, be conducive to adjustment.The reason for why with one is that it is 1.2 volts or so that the NP of luminous tube is saved, rather than 0.7 volt.
Emitter stage connects constant current resistance for two resistant series are formed, and constant current adjustable resistance can be adjusted to constant current, and constant current protective resistance is that the minimum value of adjustable resistance is limited, so as to ensure that constant current value in a constrained space.
Benefit with such circuit is that circuit is simplified, reliable, beneficial to engineering, while beneficial to cost-effective.This external application luminous tube is have light to indicate as a major reason of the current limiting device of constant current, and when the constant current resistance debugging that emitter stage is connected is correct, luminous tube glimmers or compared with light, represents that debugging is correct.Because now current limliting luminous tube works.Produce constant current effect.
2nd, operation principle explanation：
When being electrically charged pond when power supply is not connected and being not in contact with, indication light pipe is contacted（In Fig. 2 6.2）Do not work, after being electrically charged pond and having contacted, contact indication light Guan Liang.
After plugging city's power supply, by the differential triode in starting unit（In Fig. 2 8.1）Timing ic is zeroed out, when the integrated circuit starts to chargometer.In charging process, its output end is exported for high-order, by interface triode（In Fig. 2 10.1）Conversion, interface transistor collector is low level, so two triodes inside p-type constant-current charge unit are in forward bias, so emitter stage turns into saturation opening state with colelctor electrode, is charged to being electrically charged pond.At the end of timing, timing ic output end is changed into low level from a high position, and interface transistor collector is a high position, so two triodes inside p-type constant-current charge unit do not exist bias current, so emitter stage turns into the off state of cut-off with colelctor electrode, so as to terminate to be charged to being electrically charged pond.
After the battery being electrically charged charges completely, because power supply is connected with trickle resistance with pond is electrically charged（In Fig. 2 12）, thus can be to the tiny stream electric current of the maintenance needed for being electrically charged pond offer.
The present invention uses constant-current charge, at the end of charging, using timing mode, pond is electrically charged to a major class and is particularly and acid battery is charged, very good.Optimal charging current such as acid battery is the electric current of 1/10th capacity, and the charging interval is 10 hours.
It should be noted that only pipe p-type constant-current charge element memory is in two circuits, it is operating circuit and fallback circuit, simultaneously OR gate power supply mode is constituted to being electrically charged pond, but by the particularity of design measure, usually only operating circuit energization work, and fallback circuit is in open-circuit condition, but once operating circuit is damaged, fallback circuit will automatically engage energization work.
1st, line feature analysis：
（1）, starting unit.
The unit is by differential circuit and differential triode（In Fig. 2 8.1）Collectively constitute.
Differential circuit is by differential capacitance（In Fig. 2 8.4）, discharge resistance（In Fig. 2 8.3）Composition.
The unit is mainly designed to depending on the requirement according to timing ic, and the requirement of the timing ic is, after starting after the 7th pin has negative pulse, integrated internal counter resets, and starts counting up, timing.The design of this unit, after differential effect, the colelctor electrode of triode is changed into low from height, produces a negative-going pulse, so timing ic timing starts.
（2）, interface unit.
The unit is by interface triode（In Fig. 2 10.1）With triggering resistance（In Fig. 2 10.2）Composition.
Interface triode mainly has three zones.
One is the charging and the control for terminating for realizing being filled rechargable battery.Due to the logical delivery of timing ic, in charging process, interface transistor collector is low level, is charged to being electrically charged pond, and after timing terminates, interface transistor collector is a high position, and end is electrically charged pond charging.
Two is the extension for realizing voltage and current relationship, because the circuit can be used for the battery charging for being electrically charged pond and larger capacity higher, its charging voltage may be for 12 volts as being 24 volts, voltage so high could possibly be higher than the voltage that timing ic bears, simultaneously when pond is electrically charged for Large Copacity, the triode of p-type constant-current charge unit；Base current may be very big, it is possible to by that can be extended after mouth triode, and unfettered.
Three are to provide termination instruction unit light directive system provides current channel, produces the lightshow function for charging and terminating.When interface transistor collector is low level, end display lamp is bright, and the end current collection that charges is extremely high-order, terminates display lamp and does not work.
（3）, timing unit.
5th pin of timing ic HL2204 and the 6th pin be the input of vibration periphery, so the corresponding peripheral circuit of this Measure Design.Wherein its peripheral element electric capacity is oscillating capacitance（In Fig. 2 7.3）, fixed resistance and adjustable resistance constitute oscillation resistance（In Fig. 2 7.2）, wherein oscillating capacitance and oscillation resistance collectively constituted frequency-adjustable circuit.
Structure inside timing ic is that the integrated circuit vibration pin of 2 end the 5th is the output end of interior door 1, and the integrated circuit vibration pin of 1 end the 6th is the input of interior door 2, and when the input of door 2 is low level, the output end of door 1 is a high position.Conversely, when the input of door 2 is a high position, the output end of door 1 is low level.So form the principle of vibration being, after energization, because oscillating capacitance is uncharged, so the output of the 5th pin is high-order, by charging from resistance to oscillating capacitance, the first half cycle as vibration, after the electricity of oscillating capacitance is charged to threshold values, the output end of the door 1 of the 5th pin is become for low level by a high position again, so oscillating capacitance discharges further through oscillation resistance opposite house 1, forms the later half cycle of vibration.
According to the oscillation principle that the timing ic vibrates, so this measure is that oscillation resistance is become into the fixed cascade with adjustable two resistance, to realize the adjustable of frequency, while ensure the adjustable in certain limit of frequency, so increased fixed resistance being limited as the minimum value of adjustable resistance.
Its adjustment law is that oscillation resistance is bigger, and the cycle is more long, and timing is more long, otherwise shorter.Increased frequency i.e. cycle adjustable benefit be adapted to it is various be electrically charged pond the need for.
（4）, p-type constant-current charge unit characteristics and explanation.
The main idea justice of A, the composition of p-type constant-current charge unit and formation.
Tool maintenance statistics, for the triode that most fragile elements in all of charger are exactly execution Push And Release in this p-type constant-current charge unit.So having carried out emphasis treatment to the point in the present invention, the measure also becomes an important core of the invention.
P-type constant-current charge unit is mainly made up of three big circuits, is to be collectively constituted by operating circuit, fallback circuit and switching circuit.
Why a most important core in the present invention is turned into, its reason is that the circuit for devising such form of the invention can make working cell be in normal operating switch working condition all the time at the very start from what is be powered, and fallback circuit is then in " resting state " of open circuit, when operating circuit is damaged and is stopped, fallback circuit will automatically engage work, therefore greatly improve the life-span of charger.
The reason for B, generation Unit two " work and alternation of backup formula ", is analyzed.
Work as instrumentation tubes（In Fig. 2 5.1））After work conducting, because colelctor electrode is exported by a high position, at this moment by steering diode（In Fig. 2 4.2）It is connected to switching diode（In Fig. 2 4.1）Negative pole.The point is set to be a high position.Again because being managed to backup（In Fig. 2 3.1）Base stage biasing resistor one is connected to by the point of the switching diode（In Fig. 2 3.5）, there is pressure difference in switching diode, so can be to switching diode closure door again.Backup pipe is caused without bias current, no current, the state in idle are not produced electrical wear by its colelctor electrode.After charging valve is damaged, colelctor electrode is without output, or exports weak, will not produce closure door, and at this moment backup pipe there will be bias current, causes backup pipe when automatic switchover replaces instrumentation tubes to work.
Should additionally illustrate at 2 points, one is because the life-span of triode in theory is very high, but triode production process in itself, and charger on the make to aspects such as the welding of triode the reason for, or improper factor in use, the life-span as usually making triode is challenged, and does not reach such requirement, and it is such change jobs earnestly automatically, exactly one kind that this triode does not reach the high life is made up.Two is, because two transistor parameters are consistent, the on off state opened with disconnect to be at during work, so either instrumentation tubes work, or the work of backup pipe, so whole charging will not change.Three is using a pipe（Backup pipe in the present invention）It is dormancy shape, the power consumption of the pipe is approximately zero, and there is very big relation in the triode life-span with its power for being consumed, so being hardly damaged, and it is more much better than connecting functional reliability using simple parallel relationship with two pipes, because simple parallel relationship dormancy pipe always has output current, there is consumption, it is impossible to be zero consumption.This is one.The second is simple parallel connection is two pipe output constant current electric current sums, there was only a pipe output constant current after pipe is damaged, both are obvious differences.
Why switching circuit produces has two using multiple Diode series main causes, one is that more than two diode closure doors have bigger space, surplus is bigger, two can be to turn into the sampling part in batch production, it is when checking the road no current, the branch road can not turned off table is connected in branch road, because operating inconvenience like that.And ammeter directly can be connected in parallel on diode two ends can.
The present invention has the advantages that prominent after implementing：
1st, it is life-span for substantially increasing charger by the present invention one, reduces the scrappage of charger, two is to realize science to being electrically charged pond to charge, and enhances maintenance, extends the life-span for being electrically charged pond, reduces scrappage.And such charging modes are employed, or even to failed chargeable battery, there is a certain degree of repair.And battery environmental pollution is relatively large.And both products, either chargeable battery, or supporting charger, all it is the commonly used species of the modern life, so two kinds of environmental protection of product can be strengthened.Environmental protection without minor matter, so the present invention has positive effect.
2nd, also there is important economic worth, for the value of common electronic product, such as charger this kind of product, under without rare first material, so first is Value of Science ＆ Technology, second is manually to add expense, 3rd cost for being only element, and the increased element of present invention institute is limited.After the present invention is implemented, can be clearly felt that one is charger life-time dilatation after user, two is to be electrically charged pond life, three is that capacity will not occur significant change, therefore society is bound to receive, and recognizes its scientific value, therefore this excellent product can replace the product of inferior quality.Because in the modern life, the product purpose is extremely widespread, so significant economic worth can be produced.
3rd, due to the charging modes using constant-current source, and terminate to terminate using the state for counting, many batteries can be carried out with the maintenance of science, particularly to the major class battery of acid battery etc., science charges and has a significant impact with capacity to the life-span of battery, so online also have such argument, many batteries are not damaged, but this bad saying is filled, so many senior charger chargings told electrical appliance, clearly propose to the battery specialty for being used.
4th, excellent performance of the present invention, one is that constant current value is flexibly adjustable thus suitable different species.Two is that constant current source charging can be adjusted flexibly using the time, can be adapted to it is polytype be electrically charged pond, so charging science, further increase charging performance, three is to charge with terminating rear acoustic notification, and the person of convenience uses very aspect.In addition the present invention also has charging not to be afraid of the advantages of overcharging after terminating.
5th, each unit be connected science, and accomplished comprehensive utilization, thus line circuit simplify, reliability it is high.Although many voice sheets, because the few circuit of element is simplified, voice sheet facet is thin, but still just installation very well.
6th, easily production, easily debugging is well suited for middle or small, minuscule-type-enterprise's production.
7th, after especially with timing ic, circuit is more simplified, and using after series system, the requirement to capacity fall off is substantially reduced oscillating capacitance, be increased after helping sound resistance, and sound indicates function substantially, so the present invention is presented, effect is good, but low cost advantage.Beneficial to popularization.
Brief description of the drawings
Fig. 1 is integrated timing constant current charger each unit graph of a relation.
In figure：1st, power input；2nd, p-type constant-current charge unit；3rd, constant-current charge operating circuit；4th, diode and steering diode are switched；5th, constant-current charge fallback circuit；6th, load unit；7th, timing unit；8th, start element；10th, interface unit；11st, Tip element is terminated；12nd, trickle resistance.
Fig. 2 is integrated timing constant current charger circuit theory diagrams.
In figure：1st, power input；3.1st, backup pipe；3.2nd, backup pipe constant current resistance；3.3rd, current limliting luminous tube one；3.5th, biasing resistor one；4.1st, diode is switched；4.2nd, steering diode；5.1st, instrumentation tubes；5.2nd, work constant current resistance；5.3rd, current limliting luminous tube two；5.5th, biasing resistor two；6.1st, it is electrically charged pond；6.2nd, indication light pipe is contacted；6.3rd, contact indicates protective resistance；7.1st, timing ic；7.10th, the pin of timing ic the 8th；7.11st, the pin of timing ic the 4th；7.12nd, the pin of timing ic the 7th；7.13rd, the pin of timing ic the 6th；7.15th, the pin of timing ic the 5th；7.17th, the pin of timing ic the 2nd, i.e. output end；7.18th, the pin of timing ic the 3rd；7.2nd, oscillation resistance；7.3rd, oscillating capacitance；7.5th, ground capacity；7.7th, protective resistance；7.8th, the power supply voltage-stabiliser tube of integrated circuit；8.1st, differential triode；8.3rd, discharge resistance；8.4th, differential capacitance；10.1st, interface triode；10.2nd, resistance is triggered；11.2nd, current-limiting resistance；11.3rd, process indicator lamp；11.5th, voice protective resistance；11.8th, voice body；12nd, trickle resistance.
Fig. 3 is the circuit and connection figure of the fictitious load required for checking test.
In figure：1st, power input；5.1st, instrumentation tubes；5.2nd, work constant current resistance；6.2nd, indication light pipe is contacted；6.3rd, contact indicates protective resistance；15th, the series diode of fictitious load；16th, the series resistance of fictitious load；17th, universal meter.
Specific embodiment
Fig. 1,2,3 have gone out a kind of implementation product example, and Fig. 3 is the detection figure in implementing.
First, element is selected：Integrated circuit selects integrated circuit HL2204, and NPN triode uses 8050, and PNP triode selects 8550,, choosing survey PN economize on electricity pressures are consistent as far as possible for the luminous visitor of constant-current source, and diode uses face bonded type diode,, using the small model of leakage coefficient, other resistor-capacitor units are without particular/special requirement for integrating capacitor.
Discharge resistance uses powerful style number, and other resistor-capacitor units are without particular/special requirement.
2nd, circuit board processed, welding：Circuit control panel is made by Fig. 2, by the schematic diagram soldered elements of Fig. 2.
3rd, it is powered and checks and debugging.
1st, to the inspection in constant-current voltage-stabilizing source.
A, one resistor-type fictitious load of welding, as shown in Figure 3.Circuit is with 2 Diode series, then series resistance.Design the resistance of series connection.Wherein series resistance should select high-power species.Replaced being electrically charged pond with fictitious load.
The red pen string of the ammeter of universal meter is in fictitious load during detection, or red pen is connected on the diode cathode in fictitious load, and black pen connects diode cathode, adjusts series resistance, and in constant interval, being basically unchanged of electric current illustrates that constant-current source is debugged successfully to resistance.
B, the value of the constant current of adjustment work pipe.
The loop of backup pipe is disconnected, instrumentation tubes are connected on a resistance（In Fig. 2 5.1）Between base stage and ground, as new biasing, the work constant current resistance of adjustment work pipe emitter stage series connection（In Fig. 2 5.2）Value, its constant current value is met the requirements, now should also observe current limliting luminous tube two（In Fig. 2 5.3）Ying Weixian light, if do not glimmered, should increase the value of the constant current resistance that works.It should be noted that because the PN sections of current limliting luminous tube two are more at 1 volt, more than 0.7 volt, about 1.2 or so, so only with a luminous tube in this measure.
C, the value of the constant current of regulation backup pipe.
The loop of instrumentation tubes is disconnected, switching diode is disconnected（In Fig. 2 4.1）Loop.Backup pipe is connected on a resistance（In Fig. 2 3.1）Base stage and ground between, as new biasing, adjust backup constant current resistance（In Fig. 2 3.2）Value, its constant current value is met the requirements, now should also observe current limliting luminous tube one（In Fig. 2 3.3）Ying Weixian light, should otherwise increase the value of backup constant current resistance.Simultaneously it shall yet further be noted that wherein instrumentation tubes should be basically identical with the constant current value of backup pipe.
2nd, the inspection of start element and debugging.
Differential triode is connect with universal meter（In Fig. 2 8.1）Colelctor electrode, this colelctor electrode should be zero volt when being initially powered up, and should otherwise increase differential capacitance（In Fig. 2 8.4）Capacity.
3rd, to the inspection and debugging of peripheral oscillating unit.
A, the inspection to frequency.
Fictitious load in connection.The pin of timing ic the 5th or the 6th pin are connected with the hot junction of oscillograph.
After being powered up, the vibration figure shows that oscillograph has, it can be seen that frequency, the cycle can be calculated from frequency, in the case of oscillating capacitance is fixed, adjust adjustable resistance, and frequency is transferred into design load.The IC interior is 20 digit counters, therefore can calculate timing.
4th, to timing ic inspection.
With the small resistor coupled in parallel of resistance at the two ends of frequency-adjustable branch road, frequency will become to be exceedingly fast, and timing output has output quickly, and if any output, then explanation line is errorless.
5th, the logical check of interface triode.
A, the 1st pin of property-line shorted integrated circuit are artificially to terminate form, and interface transistor collector should be high-order, process indicator lamp now（In Fig. 2 11.3）Should not work.But instrumentation tubes output end is zero.If be not zero, illustrate that the circuit connection in p-type constant-current charge unit is wrong.
B, with power supply connect resistance touch interface triode（In Fig. 2 10.1）Base stage, the pipe collector be low level, now p-type constant-current charge unit have voltage output.Process indicator lamp Ying Liang now.
6th, to the energization inspection and debugging of switch unit.
A, the ammeter of universal meter is connected on backup pipe collector branch road, ammeter indicator current is approximately zero.
If incorrect, the threshold values in switch unit should be increased, be the quantity for increasing diode.
B, disconnection switch unit, now backup pipe output current value should be as the output of charging valve.Provided that electric current adjustment constant current value do not reach design and should have numerical value, then should reduce the resistance of biasing resistor.
7th, the inspection and debugging checked p-type constant-current charge cell operation pipe and the automatic switchover of backup pipe.
The position for being electrically charged pond is connected on dummy resistance.Resistance connecting interface transistor base is connected with power supply, simulation p-type constant-current charge unit is opening state.
A, the ammeter of universal meter is connected on backup pipe collector branch road, ammeter indicator current is approximately zero.
B, the ammeter of universal meter is connected on work pipe collector branch road, now table has electric current to indicate.
Above-mentioned situation correctly illustrates that backup pipe working condition is correct, and in off state, and instrumentation tubes are "on" position.Otherwise it is that line is wrong.
C, the base stage of short circuiting work pipe and emitter stage,（Simulate pipe damage）, the ammeter induced current for being connected on backup pipe collector branch road shows, and is worth essentially identical with the display of instrumentation tubes.When instrumentation tubes are damaged, backup pipe has automatically engaged work for its meaning representation.
Then it is continuous mistake if it is indicated that incorrect, or backup pipe is damaged.
8th, the battery contact display in load unit is checked.
When installation is electrically charged pond, and when being not switched on power supply, indication light Guan Yingliang is contacted.
9th, to the detection of tiny stream electric current.
Ammeter is connected in tiny stream resistance branch, tiny stream resistance is debugged, tiny stream electric current is meeted the requirements.
Illustrate, if being changed to high-power tubing to charging valve, the pond that is electrically charged of Large Copacity can be charged.
Claims (2)
1. integrated timing constant current charger, it is characterized in that：By p-type constant-current charge unit, load unit, timing unit, start element, interface unit, Tip element, trickle resistance is collectively constituted；
Wherein：Trickle resistance is connected between input and the output of p-type constant-current charge unit；
P-type constant-current charge unit is made up of constant-current charge operating circuit, constant-current charge fallback circuit, switching diode and steering diode；
Constant-current charge operating circuit is made up of instrumentation tubes, work constant current resistance, current limliting luminous tube two, biasing resistor two；Constant-current charge fallback circuit is constituted by backing up pipe, backup pipe constant current resistance, current limliting luminous tube one, biasing resistor one；
The emitter stage of instrumentation tubes connects work constant current resistance to power input, the indirect current limliting luminous tube two of the base stage of power input and instrumentation tubes, biasing resistor two is connected between the colelctor electrode of interface triode in the base stage of instrumentation tubes and interface unit, the emitter stage of backup pipe connects backup constant current resistance to power input, the indirect current limliting luminous tube one of the base stage of power input and backup pipe, switch the base stage of the positive termination backup pipe of diode, negative terminal is two-way, the negative pole of steering diode is connect all the way, the positive pole of steering diode connects the colelctor electrode of instrumentation tubes, another road connects biasing resistor one to the colelctor electrode of interface triode in interface unit, the colelctor electrode of instrumentation tubes is connected together with the colelctor electrode of backup pipe, output as p-type constant-current charge unit；
Load unit contacts indication light pipe by being electrically charged pond, and contact indicates protective resistance composition：The positive pole of battery connects the output of p-type constant-current charge unit, and negative pole ground wire, contact indication light pipe is connected on the two poles of the earth for being electrically charged pond with instruction protective resistance is contacted；
Start element is made up of differential circuit with differential triode；Differential circuit is made up of differential capacitance, discharge resistance；
Differential capacitance is connected between the base stage of power input and differential triode, discharge resistance one terminates the base stage of differential triode, discharge resistance other end ground wire, the grounded emitter line of differential triode, integrated circuit resets the pin of initiating terminal the 7th during the colelctor electrode of differential triode connects timing unit；
Timing unit resets electric capacity, protective resistance, the power supply voltage-stabiliser tube composition of integrated circuit by integrated circuit, oscillation resistance, oscillating capacitance：Oscillation resistance is made up of adjustable resistance with fixed resistance；
One termination power input of protective resistance, another pin of termination ic power end the 8th, the pin of integrated circuit the 8th connects positive pole one end of the power supply voltage-stabiliser tube of integrated circuit, the other end negative pole ground wire of the power supply voltage-stabiliser tube of integrated circuit, the integrated circuit vibration pin of 1 end the 6th connects oscillating capacitance to ground wire, the integrated circuit vibration pin of 2 end the 5th connects oscillation resistance and vibrates the pin of 1 end the 6th to integrated circuit, ground capacity is connected on integrated circuit and resets between the pin of initiating terminal the 7th and ground wire, the pin ground wire of integrated circuit ground terminal the 4th, the pin of integrated circuit timing output end the 2nd is the output of integrated circuit, that is to say the output of timing unit；
Interface unit is made up of triggering resistance with interface triode：The output of one termination timing unit of triggering resistance, trigger the base stage of the other end connection interface triode of resistance, the grounded emitter line of interface triode, the colelctor electrode of interface triode respectively with terminate Tip element, p-type constant-current charge unit biasing resistance two, biasing resistor one is connected；
Terminate Tip element to be made up of phonetic system and lamplight pointing system, phonetic system is made up of voice protective resistance, voice body, a termination IC input of voice protective resistance goes out the pin of 2 end the 3rd, another termination voice body of voice protective resistance to ground wire；Lamplight pointing system is made up of current-limiting resistance, process indicator lamp：One termination power input of current-limiting resistance, the colelctor electrode of another termination process indicator lamp of current-limiting resistance to interface triode.
2. integrated timing constant current charger according to claim 1, it is characterized in that：Timing ic uses HL2203.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522194.6A CN106712140A (en) | 2015-08-24 | 2015-08-24 | Integrated timing type constant current charger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522194.6A CN106712140A (en) | 2015-08-24 | 2015-08-24 | Integrated timing type constant current charger |
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| CN106712140A true CN106712140A (en) | 2017-05-24 |
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| CN102457096A (en) * | 2010-10-14 | 2012-05-16 | 黄庆炯 | Charging circuit capable of automatically starting and stopping |
| CN102548160A (en) * | 2011-12-23 | 2012-07-04 | 厦门兴恒隆照明科技有限公司 | Controller capable of prolonging service lives of lamps |
| CN203166763U (en) * | 2013-02-07 | 2013-08-28 | 蒋丹 | Balanced power supply |
| CN203326648U (en) * | 2013-06-18 | 2013-12-04 | 朝阳华龙电子仪表有限公司 | Wall hanging linkage power supply |
| JP2014217173A (en) * | 2013-04-25 | 2014-11-17 | 株式会社デンソー | Charging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2198706Y (en) * | 1994-09-06 | 1995-05-24 | 冶金工业部钢铁研究总院 | High efficiency protective charger |
| CN2689567Y (en) * | 2003-10-09 | 2005-03-30 | 孙泉龄 | Charger of automatic battery |
| CN102457096A (en) * | 2010-10-14 | 2012-05-16 | 黄庆炯 | Charging circuit capable of automatically starting and stopping |
| CN102122737A (en) * | 2010-12-30 | 2011-07-13 | 东莞市奇立电源有限公司 | A multi-mode charging method and device for a battery-driven switch |
| CN102548160A (en) * | 2011-12-23 | 2012-07-04 | 厦门兴恒隆照明科技有限公司 | Controller capable of prolonging service lives of lamps |
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| CN203326648U (en) * | 2013-06-18 | 2013-12-04 | 朝阳华龙电子仪表有限公司 | Wall hanging linkage power supply |
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Application publication date: 20170524 |