CN202150720U - Constant current constant voltage pulse charger capable of setting charging voltage and charging current arbitrarily - Google Patents
Constant current constant voltage pulse charger capable of setting charging voltage and charging current arbitrarily Download PDFInfo
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- CN202150720U CN202150720U CN201120273848U CN201120273848U CN202150720U CN 202150720 U CN202150720 U CN 202150720U CN 201120273848 U CN201120273848 U CN 201120273848U CN 201120273848 U CN201120273848 U CN 201120273848U CN 202150720 U CN202150720 U CN 202150720U
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Abstract
A constant current constant voltage pulse charger capable of setting a charging voltage and a charging current arbitrarily comprises a main power supply circuit(1), a standard voltage source circuit(2), a control power supply circuit(3), a charging voltage setting circuit(4), a voltage comparison circuit(5), a constant current charging control circuit(6), a charging current detection circuit(7), a charging current control circuit(8), a trigger synchronization control circuit(9), a charging trigger circuit(10) and a charging circuit(11). The constant current constant voltage pulse charger capable of setting the charging voltage and charging current arbitrarily does not need people to watch when used, the protection effects on a storage battery is good, and the service life of the storage battery can be prolonged; the constant current constant voltage pulse charger capable of setting the charging voltage and charging current arbitrarily has the advantages of low cost, good charging effects, and long service life. By using the constant current constant voltage pulse charger capable of setting the charging voltage and charging current arbitrarily, a no-polar pulse charging is realized by setting a constant charging voltage and a constant charging current arbitrarily, the storage battery is not charged excessively and the electric quantity of the storage battery is guaranteed to be enough. The constant current constant voltage pulse charger capable of setting the charging voltage and charging current arbitrarily does not need people to watch when used, and is stable and reliable in performances via practice tests.
Description
Technical field
The utility model relates to charger, is specifically related to a kind of constant current constant voltage pulse charger.
Background technology
Need personnel to keep an eye on when using at present commercially available common charger, as keep an eye on and improperly charger scaling loss, battery undercharge will occur or phenomenon such as overcharge, the storage battery charge storage ability is descended, even scrap as lead acid battery charge.Though there has been the autocontrol charger to appear on the market, its automatic control effect is unsatisfactory, the situation of scrapping storage battery occurs filling through regular meeting, and its useful life is also shorter.Though the constant-current constant-voltage charging machine is also arranged on the market, and it is mainly used in large-scale charging part, adopt microcomputerized control, cost is higher, is not suitable for domestic consumer and uses.
The charger of selling on the market is the level pressure flow-regulating type mostly, and when battery tension rose with the charging interval, charging current reduced thereupon; Keep charging current constant; Will adjust electric current at any time, particularly charge the later stage, the electrolyte boiling; Electrolyte temperature raises, and at this moment more needs personnel to keep an eye on.Common charger all is the pulsating current charging with all-wave or halfwave rectifier; Or with charging after the high frequency transformer rectification; Be equivalent to DC charging, be not easy to activate the active material on the accumulator plate, the charge storage ability of storage battery is constantly descended with such current charges.Also useful controllable silicon belongs to pulse current charge as the charger of charge member, and pulse current charge activates active material easily; But because can not constant-current constant-voltage charging; People's post must be arranged otherwise can cause and overcharge or undercharge, when charging current is excessive, also easy scaling loss charger or damage storage battery.
Summary of the invention
Do not need when the purpose of the utility model provides a kind of the charging people be keep an eye on, effective to accumulator protecting, can prolong storage battery useful life, cost is low, charging effect good, the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily of long service life.
The technical solution of the utility model is: it comprises main power circuit, normal voltage source circuit, control power circuit, charging voltage initialization circuit, voltage comparator circuit, constant current charge control circuit, charging current testing circuit, charging current control circuit, triggering synchronous control circuit, charging circuits for triggering and charging circuit; Main power circuit is connected to each circuit with normal voltage source circuit, control power circuit and charging circuit respectively power supply is provided; The normal voltage source circuit is connected to each circuit with charging voltage initialization circuit and voltage comparator circuit respectively working power is provided; The control power circuit is connected to each circuit with constant current charge control circuit, charging current control circuit, triggering synchronous control circuit and charging circuits for triggering respectively working power is provided; Charging voltage initialization circuit and voltage comparator circuit are connected to the rechargeable battery setting charging voltage of different size and the charging reference voltage that will configure is delivered to voltage comparator circuit; Voltage comparator circuit links to each other with the constant current charge control circuit with battery positive voltage, charging voltage and the battery tension set is compared, when setting voltage is higher than battery tension, to the constant current charge control circuit signal is provided; The charging current testing circuit links to each other respectively with charging current control circuit with battery terminal negative, is used for giving charging current control circuit control charging current with the charging current signal; The charging current signal that charging current control circuit links to each other with the constant current charge control circuit, send here according to the charging current testing circuit, make charging voltage and charging current form closed-loop control, limit charging current with charging current; The charging current signal synthesis that charging signals that constant current charge control circuit and charging circuits for triggering link to each other, voltage comparator circuit is sent here and charging current control circuit are sent here, produce constant current signal, give the charging circuits for triggering; The triggering synchronous control circuit links to each other with the charging circuits for triggering, circuits for triggering provide synchronous control signal in order to charge; The charging circuits for triggering link to each other with charging circuit, change trigger angle flexibly, limit charging current according to the constant current needs is that charging circuit provides triggering signal, the work of control charging circuit, and charging circuit links to each other with battery positive voltage, charges for storage battery provides charging voltage and charging current.
The technique effect of the utility model is: use its charging the time not need the people for keeping an eye on, and effective to accumulator protecting, be not easy to fill and scrap storage battery, can prolong storage battery useful life, it is low to have cost, and charging effect is good, the advantage of long service life.It can set constant charging voltage arbitrarily and constant charge current realizes electrodeless pulse current charge; Adopt discrete component to form analog control circuit, charging current approaches zero (because of internal always has electric leakage, charging current can not be reduced to zero) when battery tension reaches set point; Storage battery can not overcharge; Assurance is sufficient with storage battery, uses it to keep without personnel's pipe, and it is stable and reliable for performance to pass through practice test.
This charger has following characteristics:
1, guarantees that the storage battery that is recharged is sufficient, can not overcharge;
2, owing to be pulse current charge, can fully activate the active material on the pole plate, keep the electric power storage ability of storage battery, increase the service life;
3, temperature can be not too high in the process of charge in batteries, avoids the damage of storage battery high temperature;
4, owing to be the constant-current pulse charging; Can not make charging later stage electrolyte excessive boiling; When particularly battery tension was near set point, charging current can reduce gradually, had so promptly reduced the consumption of electrolyte; Reduced the consumption of electrolysis again, also reduced discharge of harmful gases rechargeable electrical energy;
5, charging process is not chosen and is kept an eye on, as long as correct charging voltage and the electric current set is simple in structure, easy to operate, cheap;
6, can be to being no more than any charge in batteries of standard voltage source, such as, one volt of all above storage battery, the core technology of this charger is constant current constant voltage control, the steady circuits for triggering of low output voltage, wide-voltage range charging etc.
Description of drawings
Fig. 1 is the utility model charger example structure block diagram;
Fig. 2 is the utility model charger embodiment circuit theory diagrams.
Embodiment
Like Fig. 1, shown in Figure 2; It comprises main power circuit 1, normal voltage source circuit 2, control power circuit 3, charging voltage initialization circuit 4, voltage comparator circuit 5, constant current charge control circuit 6, charging current testing circuit 7, charging current control circuit 8, triggering synchronous control circuit 9, charging circuits for triggering 10 and charging circuit 11; Main power circuit 1 is connected to each circuit with normal voltage source circuit 2, control power circuit 3 and charging circuit 11 respectively power supply is provided; Normal voltage source circuit 2 is connected to each circuit with charging voltage initialization circuit 4 and voltage comparator circuit 5 respectively working power is provided; Control power circuit 3 is connected to each circuit with constant current charge control circuit 6, charging current control circuit 8, triggering synchronous control circuit 9 and charging circuits for triggering 10 respectively working power is provided; Charging voltage initialization circuit 4 is connected to the rechargeable battery setting charging voltage of different size with voltage comparator circuit 5 and the charging reference voltage that will configure is delivered to voltage comparator circuit 5; Voltage comparator circuit 5 links to each other with constant current charge control circuit 6 with battery positive voltage, charging voltage and the battery tension set is compared, when setting voltage is higher than battery tension, to constant current charge control circuit 6 signal is provided; Charging current testing circuit 7 links to each other respectively with charging current control circuit 8 with battery terminal negative, is used for giving charging current control circuit 8 control charging currents the charging current signal; The charging current signal that charging current control circuit 8 links to each other with constant current charge control circuit 6, send here according to charging current testing circuit 8, make charging voltage and charging current form closed-loop control, limit charging current with charging current; The charging current signal synthesis that charging signals that constant current charge control circuit 6 and charging circuits for triggering 10 link to each other, voltage comparator circuit is sent here and charging current control circuit 8 are sent here, produce constant current signal, give the circuits for triggering 10 that charge; Triggering synchronous control circuit 9 links to each other with charging circuits for triggering 10, circuits for triggering 10 provide synchronous control signal in order to charge; Charging circuits for triggering 10 link to each other with charging circuit 11, change trigger angle flexibly, limit charging current according to the constant current needs is that charging circuit 11 provides triggering signal, the work of control charging circuit, and charging circuit 11 links to each other with battery positive voltage, charges for storage battery provides charging voltage and charging current.
Main power circuit 1 is made up of transformer B1, mains switch K1, fuse BX1 and fuse BX2; First end of transformer B1 first siding ring links to each other with power supply first binding post; First end of mains switch K1 links to each other with power supply second binding post, second end links to each other with first end of fuse BX1; Second end of fuse BX1 links to each other with first end of fuse BX2, and second end of transformer B1 one lateral coil links to each other with second end of fuse BX2.
Normal voltage source circuit 2 is made up of bridge rectifier Z1, resistance R 1, diode D1, capacitor C 1, resistance R 2, voltage stabilizing didoe DW1 and capacitor C 2; The positive output end of bridge rectifier Z1 links to each other with first end of resistance R 1 and the positive pole of diode D1; The negative pole of diode D1 links to each other with first end of resistance R 2 and the positive pole of capacitor C 1; Second end of resistance R 2 links to each other with the positive pole of the positive pole of voltage stabilizing didoe DW1 and capacitor C 2, and the negative output terminal of bridge rectifier Z1 links to each other respectively with second end of resistance R 1, the negative pole of capacitor C 1, the negative pole of voltage stabilizing didoe DW1 and the negative pole of capacitor C 2.The two ends of first group of secondary coil of two inputs and main power circuit 1 transformer B1 of bridge rectifier Z1 link to each other respectively.
Control power circuit 3 is made up of bridge rectifier Z2, diode D5, capacitor C 14, resistance R 29, light-emitting diode D4, resistance R 28, voltage stabilizing didoe DW2, triode Q12, capacitor C 12 and capacitor C 13; The positive output end of bridge rectifier Z2 links to each other with the positive pole of capacitor C 14, the positive pole of light-emitting diode D4, first end of resistance R 28 and the collector electrode of triode Q12; The negative output terminal of bridge rectifier Z2 links to each other with the negative pole of diode D5 and the negative pole of capacitor C 14; The negative pole of light-emitting diode D4 links to each other with first end of resistance R 29; Second end of resistance R 28 links to each other with the positive pole of the base stage of triode Q12, voltage stabilizing didoe DW2 and the positive pole of capacitor C 12; The emitter of triode Q12 links to each other with the positive pole of electric capacity 13, and the negative pole of second end of the positive pole of diode D5, resistance R 29, the negative pole of voltage stabilizing didoe DW2, capacitor C 12, the negative pole of electric capacity 13 link to each other with the common ground end respectively.The two ends of second group of secondary coil of two inputs and main power circuit 1 transformer B1 of bridge rectifier Z2 link to each other respectively.
Charging voltage initialization circuit 4 is made up of potentiometer W1, capacitor C 3, resistance R 3, triode Q1, resistance R 4, resistance R 5, triode Q2, resistance R 6 and voltmeter V1; The adjustable end of the slip of potentiometer W1 links to each other respectively with first end of capacitor C 3, first end of resistance R 3 and the base stage of triode Q1; First end of resistance R 4 links to each other respectively with the base stage of first end of resistance R 5, triode Q2; The emitter of triode Q1 links to each other with the collector electrode of triode Q2 and the anode of voltmeter V1; The emitter of triode Q2 links to each other with first end of resistance R 6; Second end of resistance R 5 links to each other with second end of resistance R 6, and second end of first stiff end of potentiometer W1, second end of capacitor C 3, resistance R 3, the negative pole of voltmeter V1 link to each other with the common ground end respectively.Second stiff end of potentiometer W1 links to each other with second end of normal voltage source circuit 2 resistance R 2, the positive pole of capacitor C 2, voltage stabilizing didoe DW1 are anodal links to each other; The collector electrode of triode Q1 links to each other with first end of normal voltage source circuit 2 resistance R 2, the negative pole of diode D1, the positive pole of capacitor C 1, and second end of resistance R 5, second end of resistance R 6 link to each other respectively with the negative output terminal of normal voltage source circuit Bridge 2 formula rectifier Z1, second end of resistance R 1, the negative pole of capacitor C 1, the negative pole of voltage stabilizing didoe DW1 and the negative pole of capacitor C 2.
Voltage comparator circuit 5 is made up of resistance R 7, resistance R 8, triode Q3, triode Q4, adjustable resistance RW1, capacitor C 4, capacitor C 5, diode D2, diode D3, triode Q5, triode Q6, resistance R 9, resistance R 10, voltage comparator ic and resistance R 11; First end of resistance R 7 links to each other respectively with first end of first stiff end of adjustable resistance RW1 and resistance R 11; Second end of resistance R 7 links to each other with the emitter of triode Q3; The collector electrode of triode Q3 links to each other respectively with first end of resistance R 8, first end of capacitor C 4 and the base stage of triode Q4; The base stage of triode Q3 links to each other with the adjustable end of the slip of adjustable resistance RW1; Second stiff end of adjustable resistance RW1 links to each other with the emitter of triode Q4; The collector electrode of triode Q4 links to each other respectively with the positive pole of diode D2 and the positive pole of diode D3, and the negative pole of diode D2 links to each other with the emitter of triode Q5, and the base stage of triode Q5 links to each other with first end of capacitor C 5; The collector electrode of triode Q5 links to each other with first end of resistance R 9 and the positive input terminal of voltage comparator ic; The negative pole of diode D3 links to each other with the emitter of triode Q6, and the base stage of triode Q6 links to each other with second end of resistance R 11, and the collector electrode of triode Q6 links to each other with first end of resistance R 10 and the negative input end of voltage comparator ic; Second end of resistance R 9 links to each other with second end of resistance R 10, the earth terminal of voltage comparator ic, and second end of second end of resistance R 8, second end of capacitor C 4, capacitor C 5 links to each other with the common ground end respectively.First end of the base stage of triode Q5, capacitor C 5 links to each other with the anode of charging voltage initialization circuit 4 voltmeter V1, the emitter of triode Q1, the collector electrode of triode Q2 respectively; First end of first end of resistance R 7, first stiff end of adjustable resistance RW1, resistance R 11 links to each other with second end of second stiff end of charging voltage initialization circuit 4 potentiometer W1, normal voltage source circuit 2 resistance R 2 respectively, the positive pole of capacitor C 2, voltage stabilizing didoe DW1 is anodal links to each other, and the earth terminal of second end of resistance R 9, second end of resistance R 10, voltage comparator ic links to each other with second end of charging voltage initialization circuit 4 resistance R 6 respectively.
Constant current charge control circuit 6 is made up of resistance R 12, resistance R 13, resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, capacitor C 6, capacitor C 7, triode Q7, triode Q8; First end of the positive pole of first end of resistance R 12, first end of resistance R 15, capacitor C 7, first end of resistance R 16, resistance R 19 links to each other respectively; The base stage of second end of resistance R 12, first end of resistance R 13, triode Q7 links to each other respectively; First end of second end of resistance R 13, second end of resistance R 14, capacitor C 6 links to each other respectively; Second end of capacitor C 6 links to each other with the common ground end; The emitter of triode Q7 links to each other with second end of resistance R 15; The collector electrode of triode Q7 links to each other respectively with the negative pole of capacitor C 7, first end of resistance R 17, first end of resistance R 18; Second end of resistance R 16 links to each other respectively with the base stage of second end of resistance R 17, triode Q8, and the emitter of triode Q8 links to each other with second end of resistance R 19, and the collector electrode of triode Q8 links to each other with first end of resistance R 20.First end of the positive pole of first end of resistance R 12, first end of resistance R 15, capacitor C 7, first end of resistance R 16, resistance R 19 links to each other with the emitter of control power circuit 3 triode Q12, the positive pole of capacitor C 13, and second end of resistance R 18 links to each other with the output of voltage comparator circuit 5 voltage comparator ics.
Charging current testing circuit 7 is made up of ammeter A and shunt FL, and the anode of ammeter A is connected with first end of shunt FL and the negative pole of storage battery, and second end of the negative terminal of ammeter A, shunt FL links to each other with connecing with the common ground end.
Charging current control circuit 8 is made up of triode Q9, resistance R 25, potentiometer W2, adjustable resistance RW2 and adjustable resistance RW3; The base stage of triode Q9 links to each other with the adjustable end of the slip of potentiometer W2; The emitter of triode Q9 links to each other with first end of resistance R 25; First stiff end of potentiometer W2 links to each other with the adjustable end of the slip of adjustable resistance RW2, second stiff end links to each other with the adjustable end of the slip of adjustable resistance RW3; First stiff end of adjustable resistance RW2 links to each other with first stiff end of adjustable resistance RW3, and second end of resistance R 25 links to each other with second stiff end of adjustable resistance RW3.The collector electrode of triode Q9 links to each other with second end of constant current charge control circuit 6 resistance R 14; Second stiff end of adjustable resistance RW2 links to each other with first end of the anode of charging current testing circuit 7 ammeter A, shunt FL, and second end of resistance R 25, second stiff end of adjustable resistance RW3 link to each other respectively with the negative output terminal of normal voltage source circuit Bridge 2 formula rectifier Z1, second end of resistance R 1, the negative pole of capacitor C 1, negative pole and the negative pole of capacitor C 2, second end of charging voltage initialization circuit 4 resistance R 5, second end of resistance R 6, second end of voltage comparator circuit 5 resistance R 9, second end of resistance R 10, the earth terminal of voltage comparator ic of voltage stabilizing didoe DW1.
Triggering synchronous control circuit 9 is made up of resistance R 22, resistance R 23, resistance R 24, triode Q10, triode Q11; First end of resistance R 22 links to each other with the base stage of triode Q10; The collector electrode of triode Q10 links to each other with first end of resistance 23 and the base stage of triode Q11; The emitter of the emitter of triode Q10, triode Q11 links to each other with first end of resistance R 24 respectively, and second end of resistance R 24 links to each other with the common ground end.Second end of resistance R 22 links to each other with the positive output end of normal voltage source circuit Bridge 2 formula rectifier Z1; Second end of resistance 23 connects power end with second end of charging voltage initialization circuit 4 resistance R 4 with the voltage comparator circuit voltage comparator ic and links to each other respectively, and the collector electrode of triode Q11 links to each other with second end of constant current charge control circuit 6 resistance R 20.
Charging circuits for triggering 10 are made up of capacitor C 8, unijunction transistor BT, resistance R 21 and triggering transformer B2; First end of capacitor C 8 links to each other with the emitter of unijunction transistor BT; First base stage of unijunction transistor BT links to each other with first end that triggers transformer B2 input coil; Second end of capacitor C 8 links to each other with the common ground end respectively with second end that triggers transformer B2 input coil, and second base stage of unijunction transistor BT links to each other with first end of resistance R 21.First end of capacitor C 8, the emitter of unijunction transistor BT link to each other with second end of constant current charge control circuit 6 resistance R 20, and second end of first end of the positive pole of first end of second end of resistance R 21 and constant current charge control circuit 6 resistance R 12, first end of resistance R 15, capacitor C 7, first end of resistance R 16, resistance R 19, second end of triggering synchronous control circuit 9 resistance 23, charging voltage initialization circuit 4 resistance R 4 connects power end with the voltage comparator circuit voltage comparator ic and links to each other respectively.
Charging circuit 11 is made up of thyristor KD, voltmeter V2, charge switch K2, capacitor C 9, resistance R 26, capacitor C 10, inductance L, resistance R 27, capacitor C 11; First end of the anode of the negative electrode of thyristor KD and voltmeter V2, the positive pole of capacitor C 11, resistance R 27, first end of inductance L link to each other respectively and are connected to the positive pole of storage battery; First end of charge switch K2 links to each other respectively with first end of first end of capacitor C 9, resistance R 26; Second end of resistance R 26 links to each other respectively with second end of first end of capacitor C 10, inductance L, and second end of second end of the negative terminal of voltmeter V2, capacitor C 9, second end of capacitor C 10, resistance R 27, the negative pole of capacitor C 11 link to each other with the common ground end respectively.Second end of charge switch K2 links to each other respectively with second end of the base stage of voltage comparator circuit 5 triode Q6, resistance R 11; The positive pole of thyristor KD links to each other respectively with second end of main power circuit 1 fuse BX1, first end of fuse BX2, and the negative pole of thyristor KD links to each other with the two ends of charging circuits for triggering 10 triggering transformer B2 output windings respectively with the control utmost point.
One, schematic block diagram illustration:
1, main power circuit:
Energy is provided for full machine.
2, normal voltage source circuit:
For charging voltage setup unit and voltage comparison unit provide stable working power, its value is to decide according to the charger of different voltage specifications, is 6V, 12V, 24V, 36V such as the charger charging voltage ... Deng.
Lead acid accumulator list lattice maximum charging voltage is 2.7V, and the storage battery maximum charging voltage of nominal 6V is 3 * 2.7V=8.1V, and the maximum charging voltage of nominal 12V is 16.2V.The maximum charging voltage of five 12V storage battery series connection is 16.2V * 5=81V etc.The voltage of standard voltage source is greater than or equal to the maximum charging voltage value.
3, control power circuit:
To control circuit working power is provided.
4, charging voltage initialization circuit:
In order to set charging voltage, give voltage comparison unit with the charging reference voltage of setting.
Voltage comparator circuit:
It is with the reference voltage of setting and want storage batteries voltage to compare, and when the magnitude of voltage of setting is higher than battery tension, produces charging signals.
5, constant current charge control circuit:
It is the charging current signal synthesis that the voltage comparison unit charging signals of sending here and the constant current control unit that charges are sent here, produces constant current signal, gives trigger element.
6, charging current testing circuit:
Its effect: (1) send ammeter to show charging current.(2) send the charging current control unit, the control charging current.
7, charging current control circuit:
Set up the size of charging current, charging voltage and charging electric forming closed-loop control limit charging current with charging current.
8, triggering synchronous control circuit:
This synchronous circuit can not adopt the slicing mode to the charge in batteries of low voltage in order to make charger, and adopts Schmidt trigger circuit; Make circuit when alternating voltage is above greater than 1 volt, overturn; Voltage turns over back when being lower than 1 volt, and the square wave of generation has been eliminated the arc at sinusoidal wave two ends; Thereby guarantee that the stable little angle of flow of controllable silicon triggers reliable charge in batteries to low-voltage.Like figure below:
9, charging circuits for triggering:
Change trigger angle flexibly according to the constant current needs, limit charging current.
10, charging circuit:
According to user's request, when little user's low-voltage is charged, can take the transformer isolation mode, conveniently moving, safe in utilization.Adopt the bidirectional triode thyristor control transformer angle of flow once, secondary adds the rectifier cell charging.The high voltage large user, available one-way SCR control charging can be saved transformer.
Two, circuit theory diagrams explanation
1, rectifier bridge Z
1, D
1, C
1, R
2, DW
1, C
2, etc. form standard voltage source, R
1Be bleeder resistance, let after the rectification root of pulsation AC wave shape neatly clean, eliminate the influence of capacity effect, guarantee Q the waveform root
10, Q
11The Schmidt trigger circuit of forming triggers at the same position of pulsating waveform root, produces stable synchronous huge ripple.
2, W
1Set potentiometer for guaranteeing the wide region setting voltage for charging voltage, adopt multiturn potentiometer, also available common potentiometer is taked the electric resistance partial pressure segmented mode, and broadening voltage is set, and is 100V such as maximum charging voltage, can be divided into three sections, (1) 1-35V; (2) 30-65V; (3) 60-100V etc. can accurately set charging voltage like this.
Q
1Being to expand the stream pipe, is for reducing the standard voltage source energy consumption, at potentiometer W
1Control produces the voltage source with load capacity down.(1), send voltmeter V
1The charging voltage of display setting; (2), send voltage comparator Q
5Base stage is carried out voltage ratio.Q
2Be Q
5The drop-down bias current pipe of base stage, Q
2By R
4, R
5, R
6Constitute constant-current circuit, current limliting is avoided Q
1Overload guarantees Q again
5The operate as normal bias current, very low charging voltage is arranged when setting.
3, Q
5, Q
6, IC, R
9, R
10Form voltage comparator circuit, in order to make it at the work of high voltage situation (because of general finished product voltage comparator operating voltage all is no more than 20V, this circuit maximum operating voltage is greater than 100V), so use Q
3, Q
4Form the operating current that complementary constant-current circuit comes the stop voltage comparator, the assurance voltage comparator circuit is worked under the low-power consumption situation, so circuit is reliable and stable.D
2, D
3Be anti-adverse current diode, it is to prevent Q
5, Q
6Base voltage punctures Q when differing big
5, Q
6Be knot.
Work is such, works as Q
5The voltage set of base stage when being higher than the battery tension that is recharged, Q just
5U
b＞Q
6U
bThe time, Q
6Conducting will be at R
10Last generation voltage drop, Q
5Ended R
9On do not have voltage drop, make IC negative input end voltage be higher than positive input terminal, output low level, R
18There is electric current to pass through, C
7Begin charging, C
7Last voltage constantly rises, Q when reaching a certain value
8Base stage will be passed through R
17Produce the bias current conducting, through R
20To C
8Charging, BT produces trigger impulse, triggers controllable silicon storage battery is charged.C
7Play the effect of circuit buffering, can not make charging current reach maximum suddenly.
4, when charging current process shunt FL, produce current signal, (1) send ammeter to show charging current; (2) send the charging current control unit.
5, RW
2, RW
3, W
2, Q
9, R
25Constitute charging current control circuit, RW
2Be that zero current is regulated variable resistor, RW
3Be to allow maximum charging current to limit to regulate variable resistor, W
2Be charging current CONTROLLED POTENTIAL device, reduce, increase to downward modulation charging stream to the adjusted electric current.
This circuit is used D for making charging current zero control
5Set up the current potential of one-0.7V, just Q
9The emitter current potential be lower than full machine ground 0.7V, to adjusted W
2The time Q
9Base stage will obtain+bias voltage of 0.7V and fullly close conducting, through R
14, R
13, make Q
7Satisfy and close conducting, Q
7To bleed off C
7On electric charge, the charging signals short circuit that voltage comparator is sent here, Q
8End, trigger element quits work, and making charging current is zero.At this moment to downward modulation W
2, let Q
9Ub descend Q
9To withdraw from satisfies closes Q
7Also will withdrawing from satisfies closes C
7Begin charging again, Q
8Conducting makes circuits for triggering produce triggering signal, controllable silicon work charging.But because D
5On the power on voltage drop of stream of voltage and shunt FL be the forward series connection, the voltage drop that FL is last makes Q again
9U
bRise, replenished some W
2The pressure drop of downward modulation, but can not be additional fully, and make Q
9Not at full conducting under the situation, the Q of closing
7Also be same.Thereby reduced C
7On magnitude of voltage, Q
8Internal resistance increase and to make C
8On charging interval prolong and to have increased the silicon controlled trigger angle, charging current is reduced, W
2Big more to what reduce, the pressure drop that also just needs big charging current on the FL shunt, to produce replenishes, and has so just realized the current control circuit that size of current is adjustable.Because the signal of Current Control output is pulse, C7 plays the smothing filtering effect again, makes the charging current stable and controllable.
Can see that from circuit charging current control is just started to control when voltage comparator is seen charging signals off, but not receive the influence of charging voltage, just with the independent from voltage of wanting charging accumulator.
When charging voltage during near setting voltage, owing to be pulse current charge, voltage comparator circuit Q
6Be higher than Q during base potential
5Base potential, and charging current is descended, in order not make the too early reduction of charging current, at Q
6Base input end has increased filter circuit C
9, R
26, C
10, R
27, C
11Deng.Work as Q
6Base potential is a little more than Q
5Stop charging during base potential.
6, trigger synchronous circuits is by Q
10, Q
11Form Q
10Base stage in resistance R
22Effect under, let pulsating voltage after the rectification, at conducting when above greater than 1V, Q
11Carry to end, let C
8Can charging and produce trigger impulse, and be lower than 1V Q when following
10End Q
11Conducting, C
8Can't charge, realize triggering synchronous with supply voltage.
7, K
1Be mains switch, can adopt air switch, K
2For the charge protection switch, before charging operations, break off, connect want storage batteries after, connect again, avoid getting an electric shock, small-sized low-voltage charger (below 36V) can be adopted piezoelectric transformer and isolates, and guarantees safe in utilization.
Claims (10)
1. can set the constant current constant voltage pulse charger of charging voltage and charging current arbitrarily; It is characterized in that: it comprises main power circuit (1), normal voltage source circuit (2), control power circuit (3), charging voltage initialization circuit (4), voltage comparator circuit (5), constant current charge control circuit (6), charging current testing circuit (7), charging current control circuit (8), triggering synchronous control circuit (9), charging circuits for triggering (10) and charging circuit (11); Main power circuit (1) is connected to each circuit with normal voltage source circuit (2), control power circuit (3) and charging circuit (11) respectively power supply is provided; Normal voltage source circuit (2) is connected to each circuit with charging voltage initialization circuit (4) and voltage comparator circuit (5) respectively working power is provided; Control power circuit (3) is connected to each circuit with constant current charge control circuit (6), charging current control circuit (8), triggering synchronous control circuit (9) and charging circuits for triggering (10) respectively working power is provided; Charging voltage initialization circuit (4) is connected to the rechargeable battery setting charging voltage of different size with voltage comparator circuit (5) and the charging reference voltage that will configure is delivered to voltage comparator circuit (5); Voltage comparator circuit (5) links to each other with constant current charge control circuit (6) with battery positive voltage, charging voltage and the battery tension set is compared, when setting voltage is higher than battery tension, to constant current charge control circuit (6) signal is provided; Charging current testing circuit (7) links to each other respectively with charging current control circuit (8) with battery terminal negative, is used for giving charging current control circuit (8) control charging current with the charging current signal; The charging current signal that charging current control circuit (8) links to each other with constant current charge control circuit (6), send here according to charging current testing circuit (8), make charging voltage and charging current form closed-loop control, limit charging current with charging current; The charging current signal synthesis that charging signals that constant current charge control circuit (6) links to each other, voltage comparator circuit is sent here with charging circuits for triggering (10) and charging current control circuit (8) are sent here, produce constant current signal, give the circuits for triggering (10) that charge; Triggering synchronous control circuit (9) links to each other with charging circuits for triggering (10), circuits for triggering (10) provide synchronous control signal in order to charge; Charging circuits for triggering (10) link to each other with charging circuit (11), change trigger angle, qualification charging current flexibly according to the constant current needs is that charging circuit (11) provides triggering signal, controls charging circuit work, and charging circuit (11) links to each other with battery positive voltage, charges for storage battery provides charging voltage and charging current.
2. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said main power circuit (1) is made up of transformer B1, mains switch K1, fuse BX1 and fuse BX2; First end of transformer B1 first siding ring links to each other with power supply first binding post; First end of mains switch K1 links to each other with power supply second binding post, second end links to each other with first end of fuse BX1; Second end of fuse BX1 links to each other with first end of fuse BX2, and second end of transformer B1 one lateral coil links to each other with second end of fuse BX2.
3. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said normal voltage source circuit (2) is made up of bridge rectifier Z1, resistance R 1, diode D1, capacitor C 1, resistance R 2, voltage stabilizing didoe DW1 and capacitor C 2; The positive output end of bridge rectifier Z1 links to each other with first end of resistance R 1 and the positive pole of diode D1; The negative pole of diode D1 links to each other with first end of resistance R 2 and the positive pole of capacitor C 1; Second end of resistance R 2 links to each other with the positive pole of the positive pole of voltage stabilizing didoe DW1 and capacitor C 2, and the negative output terminal of bridge rectifier Z1 links to each other respectively with second end of resistance R 1, the negative pole of capacitor C 1, the negative pole of voltage stabilizing didoe DW1 and the negative pole of capacitor C 2.
4. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said control power circuit (3) is made up of bridge rectifier Z2, diode D5, capacitor C 14, resistance R 29, light-emitting diode D4, resistance R 28, voltage stabilizing didoe DW2, triode Q12, capacitor C 12 and capacitor C 13; The positive output end of bridge rectifier Z2 links to each other with the positive pole of capacitor C 14, the positive pole of light-emitting diode D4, first end of resistance R 28 and the collector electrode of triode Q12; The negative output terminal of bridge rectifier Z2 links to each other with the negative pole of diode D5 and the negative pole of capacitor C 14; The negative pole of light-emitting diode D4 links to each other with first end of resistance R 29; Second end of resistance R 28 links to each other with the positive pole of the base stage of triode Q12, voltage stabilizing didoe DW2 and the positive pole of capacitor C 12; The emitter of triode Q12 links to each other with the positive pole of electric capacity 13, and the negative pole of second end of the positive pole of diode D5, resistance R 29, the negative pole of voltage stabilizing didoe DW2, capacitor C 12, the negative pole of electric capacity 13 link to each other with the common ground end respectively.
5. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said charging voltage initialization circuit (4) is made up of potentiometer W1, capacitor C 3, resistance R 3, triode Q1, resistance R 4, resistance R 5, triode Q2, resistance R 6 and voltmeter V1; The adjustable end of the slip of potentiometer W1 links to each other respectively with first end of capacitor C 3, first end of resistance R 3 and the base stage of triode Q1; First end of resistance R 4 links to each other respectively with the base stage of first end of resistance R 5, triode Q2; The emitter of triode Q1 links to each other with the collector electrode of triode Q2 and the anode of voltmeter V1; The emitter of triode Q2 links to each other with first end of resistance R 6; Second end of resistance R 5 links to each other with second end of resistance R 6, and second end of first stiff end of potentiometer W1, second end of capacitor C 3, resistance R 3, the negative pole of voltmeter V1 link to each other with the common ground end respectively.
6. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said voltage comparator circuit (5) is made up of resistance R 7, resistance R 8, triode Q3, triode Q4, adjustable resistance RW1, capacitor C 4, capacitor C 5, diode D2, diode D3, triode Q5, triode Q6, resistance R 9, resistance R 10, voltage comparator ic and resistance R 11; First end of resistance R 7 links to each other respectively with first end of first stiff end of adjustable resistance RW1 and resistance R 11; Second end of resistance R 7 links to each other with the emitter of triode Q3; The collector electrode of triode Q3 links to each other respectively with first end of resistance R 8, first end of capacitor C 4 and the base stage of triode Q4; The base stage of triode Q3 links to each other with the adjustable end of the slip of adjustable resistance RW1; Second stiff end of adjustable resistance RW1 links to each other with the emitter of triode Q4; The collector electrode of triode Q4 links to each other respectively with the positive pole of diode D2 and the positive pole of diode D3, and the negative pole of diode D2 links to each other with the emitter of triode Q5, and the base stage of triode Q5 links to each other with first end of capacitor C 5; The collector electrode of triode Q5 links to each other with first end of resistance R 9 and the positive input terminal of voltage comparator ic; The negative pole of diode D3 links to each other with the emitter of triode Q6, and the base stage of triode Q6 links to each other with second end of resistance R 11, and the collector electrode of triode Q6 links to each other with first end of resistance R 10 and the negative input end of voltage comparator ic; Second end of resistance R 9 links to each other with second end of resistance R 10, the earth terminal of voltage comparator ic, and second end of second end of resistance R 8, second end of capacitor C 4, capacitor C 5 links to each other with the common ground end respectively.
7. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said constant current charge control circuit (6) is made up of resistance R 12, resistance R 13, resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, capacitor C 6, capacitor C 7, triode Q7, triode Q8; First end of the positive pole of first end of resistance R 12, first end of resistance R 15, capacitor C 7, first end of resistance R 16, resistance R 19 links to each other respectively; The base stage of second end of resistance R 12, first end of resistance R 13, triode Q7 links to each other respectively; First end of second end of resistance R 13, second end of resistance R 14, capacitor C 6 links to each other respectively; Second end of capacitor C 6 links to each other with the common ground end; The emitter of triode Q7 links to each other with second end of resistance R 15; The collector electrode of triode Q7 links to each other respectively with the negative pole of capacitor C 7, first end of resistance R 17, first end of resistance R 18; Second end of resistance R 16 links to each other respectively with the base stage of second end of resistance R 17, triode Q8, and the emitter of triode Q8 links to each other with second end of resistance R 19, and the collector electrode of triode Q8 links to each other with first end of resistance R 20.
8. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said charging current testing circuit (7) is made up of ammeter A and shunt FL; The anode of ammeter A is connected with first end of shunt FL and the negative pole of storage battery, and second end of the negative terminal of ammeter A, shunt FL links to each other with connecing with the common ground end; Charging current control circuit 8 is made up of triode Q9, resistance R 25, potentiometer W2, adjustable resistance RW2 and adjustable resistance RW3; The base stage of triode Q9 links to each other with the adjustable end of the slip of potentiometer W2; The emitter of triode Q9 links to each other with first end of resistance R 25; First stiff end of potentiometer W2 links to each other with the adjustable end of the slip of adjustable resistance RW2, second stiff end links to each other with the adjustable end of the slip of adjustable resistance RW3; First stiff end of adjustable resistance RW2 links to each other with first stiff end of adjustable resistance RW3; Second end of resistance R 25 links to each other with second stiff end of adjustable resistance RW3, and second stiff end of adjustable resistance RW2 links to each other with the anode of charging current testing circuit (7) ammeter A, first end of shunt FL.
9. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said triggering synchronous control circuit (9) is made up of resistance R 22, resistance R 23, resistance R 24, triode Q10, triode Q11; First end of resistance R 22 links to each other with the base stage of triode Q10; The collector electrode of triode Q10 links to each other with first end of resistance 23 and the base stage of triode Q11; The emitter of the emitter of triode Q10, triode Q11 links to each other with first end of resistance R 24 respectively, and second end of resistance R 24 links to each other with the common ground end; Charging circuits for triggering (10) are made up of capacitor C 8, unijunction transistor BT, resistance R 21 and triggering transformer B2; First end of capacitor C 8 links to each other with the emitter of unijunction transistor BT; First base stage of unijunction transistor BT links to each other with first end that triggers transformer B2 input coil; Second end of capacitor C 8 links to each other with the common ground end respectively with second end that triggers transformer B2 input coil, and second base stage of unijunction transistor BT links to each other with first end of resistance R 21.
10. the constant current constant voltage pulse charger that can set charging voltage and charging current arbitrarily as claimed in claim 1; It is characterized in that said charging circuit (11) is made up of thyristor KD, voltmeter V2, charge switch K2, capacitor C 9, resistance R 26, capacitor C 10, inductance L, resistance R 27, capacitor C 11; First end of the anode of the negative electrode of thyristor KD and voltmeter V2, the positive pole of capacitor C 11, resistance R 27, first end of inductance L link to each other respectively and are connected to the positive pole of storage battery; First end of charge switch K2 links to each other respectively with first end of first end of capacitor C 9, resistance R 26; Second end of resistance R 26 links to each other respectively with second end of first end of capacitor C 10, inductance L, and second end of second end of the negative terminal of voltmeter V2, capacitor C 9, second end of capacitor C 10, resistance R 27, the negative pole of capacitor C 11 link to each other with the common ground end respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120273848U CN202150720U (en) | 2011-07-30 | 2011-07-30 | Constant current constant voltage pulse charger capable of setting charging voltage and charging current arbitrarily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120273848U CN202150720U (en) | 2011-07-30 | 2011-07-30 | Constant current constant voltage pulse charger capable of setting charging voltage and charging current arbitrarily |
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| Publication Number | Publication Date |
|---|---|
| CN202150720U true CN202150720U (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120273848U Expired - Lifetime CN202150720U (en) | 2011-07-30 | 2011-07-30 | Constant current constant voltage pulse charger capable of setting charging voltage and charging current arbitrarily |
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| Country | Link |
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| CN (1) | CN202150720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270873A (en) * | 2011-07-30 | 2011-12-07 | 何庆余 | Constant-current constant-voltage pulse charger capable of randomly setting charging voltage and charging current |
| CN110995081A (en) * | 2019-11-27 | 2020-04-10 | 佛山市顺德区美的洗涤电器制造有限公司 | Drive circuit, equipment and step motor drive circuit for direct current motor |
-
2011
- 2011-07-30 CN CN201120273848U patent/CN202150720U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270873A (en) * | 2011-07-30 | 2011-12-07 | 何庆余 | Constant-current constant-voltage pulse charger capable of randomly setting charging voltage and charging current |
| CN110995081A (en) * | 2019-11-27 | 2020-04-10 | 佛山市顺德区美的洗涤电器制造有限公司 | Drive circuit, equipment and step motor drive circuit for direct current motor |
| CN110995081B (en) * | 2019-11-27 | 2021-05-07 | 佛山市顺德区美的洗涤电器制造有限公司 | Drive circuit, equipment and step motor drive circuit for direct current motor |
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