CN203871911U - Storage battery charger - Google Patents
Storage battery charger Download PDFInfo
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- CN203871911U CN203871911U CN201420090918.5U CN201420090918U CN203871911U CN 203871911 U CN203871911 U CN 203871911U CN 201420090918 U CN201420090918 U CN 201420090918U CN 203871911 U CN203871911 U CN 203871911U
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- 238000003860 storage Methods 0.000 title abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 128
- 238000004804 winding Methods 0.000 claims description 57
- 230000005669 field effect Effects 0.000 claims description 39
- 230000000087 stabilizing effect Effects 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a storage battery charger. The storage battery charger comprises indicating lamps, a one-chip microcomputer, a charging circuit and a control circuit. The storage battery charger has functions of anti-reversal-connection, anti-short-circuit, anti-overcharge and the like. The green lamp twinkles when a storage battery in a normal charging state, and the twinkling speed is changing according to the electric quantity of the battery: when the electric quantity of the battery is less than 50%, the green lamp twinkles rapidly; when the battery is close to being fully charged, the green lamp twinkles slowly. After the battery is fully charged, the green lamp stops twinkling, and the output end closes output automatically. When the output end is not connected with the battery, the battery is in reverse polarity connection or short circuit happens, the output end does not output a voltage or a current, the red lamp twinkles to remind a user to connect the battery correctly, and damage of the storage battery or shortening of the service life of the storage battery caused by accident error operation of a user are prevented.
Description
Technical field
The utility model relates to battery charger.
Background technology
" lead acid accumulator " be now till widely used a kind of inorganic chemistry power supply in the world, this product has good invertibity, voltage characteristic is steady, long service life, applied widely, abundant raw materials (and renewable use) and the advantage such as cheap, be therefore widely used in national defence, communication, railway, traffic, industrial and agricultural production department.At present, the electric vehicle power accumulator of China has also adopted lead acid accumulator mostly.But, if storage battery improper use can cause its life-span greatly to shorten.Affect a lot of because have of service life of lead accumulator, find by research: 1. because charging method is incorrect, charging technique can not adapt to the specific demand of lead accumulator, cause battery to be difficult to reach the cycle life of regulation, that is to say, most storage batterys are not damaged, but " filling bad "! a good charger is to having very important effect the useful life of storage battery as can be seen here! although the technology of storage battery self has had no small progress in recent years, but the development of the charger again supplementing as its energy is very slow, traditional charger can only carry out simple constant voltage or constant current charge---thus the charging interval is very long, charge efficiency reduces, or employing fast charge mode, for a long time taking large electric current as boost battery charge, although this mode is to have shortened the charging interval, but when large current charge, easily cause internal storage battery polar board surface to come off, shorten normal service life, and when large current charge, internal storage battery electrolyte is made fierce chemical reaction and is produced a large amount of inflammable gases, the consequence occurring is like this exactly that battery container occurs bulging or breaks, more very can explode.
Utility model content
The purpose of this utility model is to propose a kind of battery charger, and it can solve short problem in useful life.
In order to achieve the above object, the technical scheme that the utility model adopts is as follows:
A kind of battery charger, it comprises indicator light, single-chip microcomputer, charging circuit and control circuit;
Described indicator light comprises a LED lamp and the 2nd LED lamp;
Described charging circuit comprises the rectification filtering module being electrically connected with city, resistance R 6, capacitor C 13, the first resistance, diode D3, field effect transistor Q1, resistance R 2, resistance R 13, resistance R 14, resistance R 15, the second resistance, resistance R 1, diode D7, resistance R 11, capacitor C 4, pulse width modulating chip U1, resistance R 12, resistance R 4, resistance R 17, capacitor C 1, reference voltage source Q2, photoelectrical coupler U2, resistance R 19A, transformer T1, fast recovery diode Q5, capacitor C 2, resistance R 10, inductance L 2, capacitor C 7, capacitor C 3, capacitor C 5, capacitor C 6, capacitor C 23, capacitor C 15 and capacitor C 8, described transformer T1 has armature winding, secondary winding and auxiliary winding, and armature winding and auxiliary winding are positioned at the same side, the output of rectification filtering module is connected with one end of armature winding, and one end of armature winding is connected with capacitor C 13, and capacitor C 13 is connected with the negative pole of diode D3, and the positive pole of diode D3 is connected with the drain electrode of field effect transistor Q1, and the first resistance is in parallel with capacitor C 13, one end of armature winding is also connected with the vibration port of pulse width modulating chip U1 by resistance R 6, resistance R 13, capacitor C 4 successively, resistance R 6 is also by resistance R 2 ground connection, the source electrode of field effect transistor Q1 is connected between resistance R 6 and resistance R 2, the grid of field effect transistor Q1 is connected with the pulse output end mouth of pulse width modulating chip U1 by resistance R 15, and the grid of field effect transistor Q1 is also by resistance R 14 ground connection, the other end of armature winding is connected with the positive pole of diode D3, one end of armature winding is also connected with the positive source port of pulse width modulating chip U1 by the second resistance, one end ground connection of auxiliary winding, the other end of auxiliary winding is connected with the positive pole of diode D7 by resistance R 1, the negative pole of diode D7 is connected with the positive source port of pulse width modulating chip U1, the positive source port of pulse width modulating chip U1 is by capacitor C 15 ground connection, the power supply benchmark port of pulse width modulating chip U1 is connected with capacitor C 4 by resistance R 11, the power supply benchmark port of pulse width modulating chip U1 is by capacitor C 5 ground connection, the vibration port of pulse width modulating chip U1 is by capacitor C 23 ground connection, the power cathode port ground connection of pulse width modulating chip U1, the current sample port of pulse width modulating chip U1 is connected with resistance R 6 by resistance R 13, the current sample port of pulse width modulating chip U1 is also by capacitor C 6 ground connection, the Voltage Feedback port ground connection of pulse width modulating chip U1, the compensation port of pulse width modulating chip U1 is by capacitor C 3 ground connection, one end ground connection of secondary winding, the other end of secondary winding is connected with output VCC by capacitor C 2, resistance R 10, inductance L 2 successively, the other end of secondary winding is also connected with output VCC by fast recovery diode Q5, inductance L 2 successively, one end of capacitor C 7 is connected between fast recovery diode Q5 and inductance L 2, the other end ground connection of capacitor C 7, one end of capacitor C 8 is connected between inductance L 2 and output VCC, the other end ground connection of capacitor C 8, output VCC is successively by resistance R 17, resistance R 19A ground connection, the reference utmost point of voltage-reference Q2 is connected between resistance R 17 and resistance R 19A, the negative electrode of voltage-reference Q2 is connected with output VCC by resistance R 4, the plus earth of voltage-reference Q2, one end of capacitor C 1 is connected with the negative electrode of voltage-reference Q2, and the other end of capacitor C 1 is connected with the reference utmost point of voltage-reference Q2, the diode input of photoelectrical coupler U2 is connected with output VCC by resistance R 12, the diode output of photoelectrical coupler U2 is connected with the negative electrode of voltage-reference Q2, the transistor collector end of photoelectrical coupler U2 is connected with the compensation port of pulse width modulating chip U1, the transistor emitter end ground connection of photoelectrical coupler U2, wherein, the other end of armature winding, the auxiliary other end of winding and the other end of secondary winding are Same Name of Ends,
Described control circuit comprises resistance R 27, field effect transistor Q4, resistance R 20, triode Q3, resistance R 28, diode D2, diode D9, resistance R 22, resistance R 25, capacitor C 17, the 3rd resistance, resistance R 18, resistance R 23, capacitor C 14, supply module, charging positive terminal and charging negative pole end; The source electrode of field effect transistor Q4 is connected with output VCC, output VCC is connected with the grid of field effect transistor Q4 by resistance R 27, the grid of field effect transistor Q4 is connected with the collector electrode of triode Q3, the grounded emitter of triode Q3, the base stage of triode Q3 is connected with the PWM control end of single-chip microcomputer by resistance R 28; The negative pole of diode D2 is connected with charging positive terminal, and the positive pole of diode D2 is connected with the drain electrode of field effect transistor Q4, and diode D9 is in parallel with diode D2; Charging positive terminal is connected with the voltage monitoring end of single-chip microcomputer by resistance R 22, and charging negative pole end is connected with the current sample end of single-chip microcomputer by resistance R 18, resistance R 23 successively; Resistance R 22 is also by resistance R 25 ground connection, and resistance R 25 is in parallel with capacitor C 17; Charging negative pole end is also by the 3rd grounding through resistance, and capacitor C 14 is in parallel with the 3rd resistance; Output VCC is connected with the power end of single-chip microcomputer by supply module, the earth terminal ground connection of single-chip microcomputer; The first output of single-chip microcomputer is connected with a LED lamp, and the second output of single-chip microcomputer is connected with the 2nd LED lamp.
Preferably, the output of described filter rectification module is also by capacitor C 12 ground connection.
Preferably, described the first resistance is composed in parallel by resistance R 8, resistance R 7, resistance R 9.
Preferably, described the second resistance is composed in parallel by resistance R 5, resistance R 3.
Preferably, described the 3rd resistance is composed in parallel by resistance R 29, resistance R 21.
Preferably, described supply module comprises capacitor C 16, capacitor C 10, capacitor C 11, voltage stabilizing chip U4 and resistance R 19, output VCC is connected with the input of voltage stabilizing chip U4 by resistance R 19, the output of voltage stabilizing chip U4 is connected with the power end of single-chip microcomputer, the earth terminal ground connection of voltage stabilizing chip U4, one end of capacitor C 11 is connected between the input and resistance R 19 of voltage stabilizing chip U4, the other end ground connection of capacitor C 11, one end of capacitor C 16 is connected between the output and the power end of single-chip microcomputer of voltage stabilizing chip U4, the other end ground connection of capacitor C 16, capacitor C 10 is in parallel with capacitor C 16.
Preferably, the model of described single-chip microcomputer is SC91F711.
Preferably, the first output of single-chip microcomputer is connected with a LED lamp by resistance R 24.
Preferably, the second output of single-chip microcomputer is connected with the 2nd LED lamp by resistance R 26.
Preferably, the color of a LED lamp and the 2nd LED lamp is different.
The utlity model has following beneficial effect:
There is anti-reverse, anti-short circuit, the function such as anti-overcharge.Electric power storage battery is green light flicker in the situation that charging normal, and flash speed is constantly to change according to the electric weight of battery: when battery electric quantity less than 50%, and green light fast blink; Battery approaches and is full of, and green light glimmers at a slow speed; After battery has been full of, green light stops flicker, and output is closed output automatically.When output does not connect battery, when battery pole back connection or short circuit, output no-voltage, no current output, and carry out reminding user with blinking red lamp and will correctly connect battery, prevents from damaging storage battery or shortening useful life of storage battery because of the unexpected faulty operation of user.
Brief description of the drawings
Fig. 1 is the functional-block diagram of the battery charger of the utility model preferred embodiment;
Fig. 2 is the circuit diagram of the charging circuit in Fig. 1;
Fig. 3 is the circuit diagram of single-chip microcomputer, indicator light and control circuit in Fig. 1.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further.
In conjunction with shown in Fig. 1 to Fig. 3, a kind of battery charger, it comprises indicator light, single-chip microcomputer U3, charging circuit and control circuit.
Described indicator light comprises a LED lamp LED1 and the 2nd LED lamp LED2.
Described charging circuit comprises the rectification filtering module being connected with civil power AC1, resistance R 6, capacitor C 13, the first resistance, diode D3, field effect transistor Q1, resistance R 2, resistance R 13, resistance R 14, resistance R 15, the second resistance, resistance R 1, diode D7, resistance R 11, capacitor C 4, pulse width modulating chip U1, resistance R 12, resistance R 4, resistance R 17, capacitor C 1, reference voltage source Q2, photoelectrical coupler U2, resistance R 19A, transformer T1, fast recovery diode Q5, capacitor C 2, resistance R 10, inductance L 2, capacitor C 7, capacitor C 3, capacitor C 5, capacitor C 6, capacitor C 23, capacitor C 15 and capacitor C 8, described transformer T1 has armature winding, secondary winding and auxiliary winding, and armature winding and auxiliary winding are positioned at the same side, the output of rectification filtering module is connected with one end of armature winding, and one end of armature winding is connected with capacitor C 13, and capacitor C 13 is connected with the negative pole of diode D3, and the positive pole of diode D3 is connected with the drain electrode of field effect transistor Q1, and the first resistance is in parallel with capacitor C 13, one end of armature winding is also connected with the vibration port of pulse width modulating chip U1 by resistance R 6, resistance R 13, capacitor C 4 successively, resistance R 6 is also by resistance R 2 ground connection, the source electrode of field effect transistor Q1 is connected between resistance R 6 and resistance R 2, the grid of field effect transistor Q1 is connected with the pulse output end mouth of pulse width modulating chip U1 by resistance R 15, and the grid of field effect transistor Q1 is also by resistance R 14 ground connection, the other end of armature winding is connected with the positive pole of diode D3, one end of armature winding is also connected with the positive source port of pulse width modulating chip U1 by the second resistance, one end ground connection of auxiliary winding, the other end of auxiliary winding is connected with the positive pole of diode D7 by resistance R 1, the negative pole of diode D7 is connected with the positive source port of pulse width modulating chip U1, the positive source port of pulse width modulating chip U1 is by capacitor C 15 ground connection, the power supply benchmark port of pulse width modulating chip U1 is connected with capacitor C 4 by resistance R 11, the power supply benchmark port of pulse width modulating chip U1 is by capacitor C 5 ground connection, the vibration port of pulse width modulating chip U1 is by capacitor C 23 ground connection, the power cathode port ground connection of pulse width modulating chip U1, the current sample port of pulse width modulating chip U1 is connected with resistance R 6 by resistance R 13, the current sample port of pulse width modulating chip U1 is also by capacitor C 6 ground connection, the Voltage Feedback port ground connection of pulse width modulating chip U1, the compensation port of pulse width modulating chip U1 is by capacitor C 3 ground connection, one end ground connection of secondary winding, the other end of secondary winding is connected with output VCC by capacitor C 2, resistance R 10, inductance L 2 successively, the other end of secondary winding is also connected with output VCC by fast recovery diode Q5, inductance L 2 successively, one end of capacitor C 7 is connected between fast recovery diode Q5 and inductance L 2, the other end ground connection of capacitor C 7, one end of capacitor C 8 is connected between inductance L 2 and output VCC, the other end ground connection of capacitor C 8, output VCC is successively by resistance R 17, resistance R 19A ground connection, the reference utmost point of voltage-reference Q2 is connected between resistance R 17 and resistance R 19A, the negative electrode of voltage-reference Q2 is connected with output VCC by resistance R 4, the plus earth of voltage-reference Q2, one end of capacitor C 1 is connected with the negative electrode of voltage-reference Q2, and the other end of capacitor C 1 is connected with the reference utmost point of voltage-reference Q2, the diode input of photoelectrical coupler U2 is connected with output VCC by resistance R 12, the diode output of photoelectrical coupler U2 is connected with the negative electrode of voltage-reference Q2, the transistor collector end of photoelectrical coupler U2 is connected with the compensation port of pulse width modulating chip U1, the transistor emitter end ground connection of photoelectrical coupler U2, wherein, the other end of armature winding, the auxiliary other end of winding and the other end of secondary winding are Same Name of Ends.The model of pulse width modulating chip U1 is UC3842, and the model of photoelectrical coupler U2 is JC817, and the model of voltage-reference Q2 is TL431, and the model of fast recovery diode Q5 is REG20100.Arrange filtration module and be made up of rectifier bridge D1, resistance R 16 and capacitor C X1, the model of rectifier bridge D1 is D2SB60.
Described control circuit comprises resistance R 27, field effect transistor Q4, resistance R 20, triode Q3, resistance R 28, diode D2, diode D9, resistance R 22, resistance R 25, capacitor C 17, the 3rd resistance, resistance R 18, resistance R 23, capacitor C 14, resistance R 24, resistance R 26, supply module, charging positive terminal B+ and charging negative pole end B-; The source electrode of field effect transistor Q4 is connected with output VCC, output VCC is connected with the grid of field effect transistor Q4 by resistance R 27, the grid of field effect transistor Q4 is connected with the collector electrode of triode Q3, the grounded emitter of triode Q3, the base stage of triode Q3 is connected with the PWM control end of single-chip microcomputer U3 by resistance R 28; The negative pole of diode D2 is connected with charging positive terminal B+, and the positive pole of diode D2 is connected with the drain electrode of field effect transistor Q4, and diode D9 is in parallel with diode D2; Charging positive terminal B+ is connected with the voltage monitoring end of single-chip microcomputer U3 by resistance R 22, and charging negative pole end B-is connected with the current sample end of single-chip microcomputer U3 by resistance R 18, resistance R 23 successively; Resistance R 22 is also by resistance R 25 ground connection, and resistance R 25 is in parallel with capacitor C 17; Charging negative pole end B-is also by the 3rd grounding through resistance, and capacitor C 14 is in parallel with the 3rd resistance; Output VCC is connected with the power end of single-chip microcomputer U3 by supply module, the earth terminal ground connection of single-chip microcomputer U3; The first output of single-chip microcomputer U3 is connected with a LED lamp LED1 by resistance R 24, and the second output of single-chip microcomputer U3 is connected with the 2nd LED lamp LED2 by resistance R 26.
The output of described filter rectification module is also by capacitor C 12 ground connection.
Described the first resistance is composed in parallel by resistance R 8, resistance R 7, resistance R 9.
Described the second resistance is composed in parallel by resistance R 5, resistance R 3.
Described the 3rd resistance is composed in parallel by resistance R 29, resistance R 21.
Described supply module comprises capacitor C 16, capacitor C 10, capacitor C 11, voltage stabilizing chip U4 and resistance R 19, output VCC is connected with the input of voltage stabilizing chip U4 by resistance R 19, the output of voltage stabilizing chip U4 is connected with the power end of single-chip microcomputer U3, the earth terminal ground connection of voltage stabilizing chip U4, one end of capacitor C 11 is connected between the input and resistance R 19 of voltage stabilizing chip U4, the other end ground connection of capacitor C 11, one end of capacitor C 16 is connected between the output of voltage stabilizing chip U4 and the power end of single-chip microcomputer U3, the other end ground connection of capacitor C 16, capacitor C 10 is in parallel with capacitor C 16.
The model of described single-chip microcomputer U3 is SC91F711.
The one LED lamp LED1 of the present embodiment and the color of the 2nd LED lamp LED2 are different, and for example, the color of a LED lamp LED1 is green, and the color of the 2nd LED lamp LED2 is red.The transformer T1 of the present embodiment is high-frequency pulse transformer.
The operation principle of the present embodiment is as follows:
220V electric main becomes as pulsating direct current through over commutation, then forms the direct current of stable 300V left and right through capacitor filtering.5 pin of pulse width modulating chip U1 are that power cathode 7 pin are positive source, 6 pin are that pulse output directly drives field effect transistor Q1,3 pin are maximum current limit, by regulating the resistance of the resistance that is connected to adjust the maximum current of charger, the external oscillation resistance of 4 pin and oscillating capacitance.High-frequency pulse transformer T1 effect has three, and the firstth, high-voltage pulse will be pressed as action of low-voltage pulse, the secondth, play the effect of isolated high-voltage, with protection against electric shock, the 3rd is to provide working power for various chips and peripheral circuit thereof.Reference voltage source Q2, coordinates photoelectrical coupler to play the effect of automatic adjusting charger voltage.When energising starts, the direct current of the 300V left and right obtaining through rectification and filtering is delivered to the 7th pin of pulse width modulating chip U1 after by resistance R 5, resistance R 3 step-downs, and pulse width modulating chip U1 is started.The 6 pin output square-wave pulses of pulse width modulating chip U1, deliver to the grid of field effect transistor Q1, the high voltage direct current of 300V left and right is delivered to the drain electrode of field effect transistor Q1, conducting and the shutoff of the oscillator signal control field effect transistor Q1 of 6 pin through the armature winding of transformer T1 simultaneously.Simultaneously the first via voltage of the auxiliary winding output of transformer T1 provides reliable source of power for pulse width modulating chip U1, the second road voltage of secondary winding output obtains stable voltage through rectifying and wave-filtering, is the power supply of next stage control circuit and is charge in batteries through fast recovery diode Q5 output voltage.
Charging voltage (being a VCC+) road of recovery diode Q5 output is charge in batteries through field effect transistor Q4, diode D2, diode D9, and another road is single-chip microcomputer U3 power supply through resistance R 19 to voltage stabilizing chip U4.Charging positive terminal B+(connects battery positive voltage) after resistance R 22 and resistance R 25 dividing potential drops, make charging voltage to single-chip microcomputer U3 the 6th pin and monitor in real time, charging negative pole B-(connects battery terminal negative) through resistance R 29, resistance R 21 ground connection, do charging current sampling and control to single-chip microcomputer U3 the 7th pin through resistance R 18, resistance R 23 again, in charging process, this two-way sample circuit can be realized constant current-constant voltage-floating charge syllogic charge function according to the electric quantity conditions of storage battery in real time.
While charging normal, charging current forms negative polarity current sampling voltage on sampling resistor R29, R21, this negative voltage is added in single-chip microcomputer U3 the 7th pin, make its 4th pin output pwm signal drive triode Q3 and field effect transistor Q4 to allow the output voltage of charging circuit part be charge in batteries, the change in voltage that the 3rd heel of single-chip microcomputer U3 returns to the 7th pin of single-chip microcomputer U3 according to sampling resistor R29, R21 is controlled the flash speed of LED1 green light, and user can learn according to the flash speed of green light the charged state of battery.
Charging control process, in the time of the first charging stage, namely when battery tension lower than 12V below time, the voltage that charging positive terminal B+ is fed back by battery positive voltage after resistance R 22 and resistance R 25 dividing potential drops to single-chip microcomputer U3 the 6th pin, single-chip microcomputer U3 makes the pwm signal of its 4th pin export with maximum duty cycle according to the sampling quantity of the 6th pin voltage, drives thus triode Q3.
The width of controlling field effect transistor Q4 conducting channel, the positive terminal B+ that now charges is taking maximum charging current as charge in batteries, and green light is fast blink; Along with the increase in charging interval, accumulator electric-quantity recovers gradually, the sampled voltage of the 6th pin of single-chip microcomputer U3 increases gradually, the duty ratio of the pwm signal of its 4th pin output and then diminishes gradually, the conducting channel of field effect transistor Q4 and then narrows gradually, charger has entered constant voltage charge state, and the output current of the positive terminal B+ that therefore charges end also and then diminishes gradually, and green light is flicker at a slow speed; When battery tension reaches 14.2V left and right, when the output current of the positive terminal B+ that namely charges end is 200～300MA, charger has entered floating charge state, after half an hour, the 4th pin of single-chip microcomputer U3 has been closed pwm signal output automatically, make the conducting channel of field effect transistor Q4 be complete closure state, the output of charging positive terminal B+ no-voltage electric current, green light stop flash for prompting user now battery be full of.
For a person skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and distortion, and these all changes and distortion all should belong to the protection range of the utility model claim within.
Claims (10)
1. a battery charger, is characterized in that, comprises indicator light, single-chip microcomputer, charging circuit and control circuit;
Described indicator light comprises a LED lamp and the 2nd LED lamp;
Described charging circuit comprises the rectification filtering module being electrically connected with city, resistance R 6, capacitor C 13, the first resistance, diode D3, field effect transistor Q1, resistance R 2, resistance R 13, resistance R 14, resistance R 15, the second resistance, resistance R 1, diode D7, resistance R 11, capacitor C 4, pulse width modulating chip U1, resistance R 12, resistance R 4, resistance R 17, capacitor C 1, reference voltage source Q2, photoelectrical coupler U2, resistance R 19A, transformer T1, fast recovery diode Q5, capacitor C 2, resistance R 10, inductance L 2, capacitor C 7, capacitor C 3, capacitor C 5, capacitor C 6, capacitor C 23, capacitor C 15 and capacitor C 8, described transformer T1 has armature winding, secondary winding and auxiliary winding, and armature winding and auxiliary winding are positioned at the same side, the output of rectification filtering module is connected with one end of armature winding, and one end of armature winding is connected with capacitor C 13, and capacitor C 13 is connected with the negative pole of diode D3, and the positive pole of diode D3 is connected with the drain electrode of field effect transistor Q1, and the first resistance is in parallel with capacitor C 13, one end of armature winding is also connected with the vibration port of pulse width modulating chip U1 by resistance R 6, resistance R 13, capacitor C 4 successively, resistance R 6 is also by resistance R 2 ground connection, the source electrode of field effect transistor Q1 is connected between resistance R 6 and resistance R 2, the grid of field effect transistor Q1 is connected with the pulse output end mouth of pulse width modulating chip U1 by resistance R 15, and the grid of field effect transistor Q1 is also by resistance R 14 ground connection, the other end of armature winding is connected with the positive pole of diode D3, one end of armature winding is also connected with the positive source port of pulse width modulating chip U1 by the second resistance, one end ground connection of auxiliary winding, the other end of auxiliary winding is connected with the positive pole of diode D7 by resistance R 1, the negative pole of diode D7 is connected with the positive source port of pulse width modulating chip U1, the positive source port of pulse width modulating chip U1 is by capacitor C 15 ground connection, the power supply benchmark port of pulse width modulating chip U1 is connected with capacitor C 4 by resistance R 11, the power supply benchmark port of pulse width modulating chip U1 is by capacitor C 5 ground connection, the vibration port of pulse width modulating chip U1 is by capacitor C 23 ground connection, the power cathode port ground connection of pulse width modulating chip U1, the current sample port of pulse width modulating chip U1 is connected with resistance R 6 by resistance R 13, the current sample port of pulse width modulating chip U1 is also by capacitor C 6 ground connection, the Voltage Feedback port ground connection of pulse width modulating chip U1, the compensation port of pulse width modulating chip U1 is by capacitor C 3 ground connection, one end ground connection of secondary winding, the other end of secondary winding is connected with output VCC by capacitor C 2, resistance R 10, inductance L 2 successively, the other end of secondary winding is also connected with output VCC by fast recovery diode Q5, inductance L 2 successively, one end of capacitor C 7 is connected between fast recovery diode Q5 and inductance L 2, the other end ground connection of capacitor C 7, one end of capacitor C 8 is connected between inductance L 2 and output VCC, the other end ground connection of capacitor C 8, output VCC is successively by resistance R 17, resistance R 19A ground connection, the reference utmost point of voltage-reference Q2 is connected between resistance R 17 and resistance R 19A, the negative electrode of voltage-reference Q2 is connected with output VCC by resistance R 4, the plus earth of voltage-reference Q2, one end of capacitor C 1 is connected with the negative electrode of voltage-reference Q2, and the other end of capacitor C 1 is connected with the reference utmost point of voltage-reference Q2, the diode input of photoelectrical coupler U2 is connected with output VCC by resistance R 12, the diode output of photoelectrical coupler U2 is connected with the negative electrode of voltage-reference Q2, the transistor collector end of photoelectrical coupler U2 is connected with the compensation port of pulse width modulating chip U1, the transistor emitter end ground connection of photoelectrical coupler U2, wherein, the other end of armature winding, the auxiliary other end of winding and the other end of secondary winding are Same Name of Ends,
Described control circuit comprises resistance R 27, field effect transistor Q4, resistance R 20, triode Q3, resistance R 28, diode D2, diode D9, resistance R 22, resistance R 25, capacitor C 17, the 3rd resistance, resistance R 18, resistance R 23, capacitor C 14, supply module, charging positive terminal and charging negative pole end; The source electrode of field effect transistor Q4 is connected with output VCC, output VCC is connected with the grid of field effect transistor Q4 by resistance R 27, the grid of field effect transistor Q4 is connected with the collector electrode of triode Q3, the grounded emitter of triode Q3, the base stage of triode Q3 is connected with the PWM control end of single-chip microcomputer by resistance R 28; The negative pole of diode D2 is connected with charging positive terminal, and the positive pole of diode D2 is connected with the drain electrode of field effect transistor Q4, and diode D9 is in parallel with diode D2; Charging positive terminal is connected with the voltage monitoring end of single-chip microcomputer by resistance R 22, and charging negative pole end is connected with the current sample end of single-chip microcomputer by resistance R 18, resistance R 23 successively; Resistance R 22 is also by resistance R 25 ground connection, and resistance R 25 is in parallel with capacitor C 17; Charging negative pole end is also by the 3rd grounding through resistance, and capacitor C 14 is in parallel with the 3rd resistance; Output VCC is connected with the power end of single-chip microcomputer by supply module, the earth terminal ground connection of single-chip microcomputer; The first output of single-chip microcomputer is connected with a LED lamp, and the second output of single-chip microcomputer is connected with the 2nd LED lamp.
2. battery charger as claimed in claim 1, is characterized in that, the output of described rectification filtering module is also by capacitor C 12 ground connection.
3. battery charger as claimed in claim 1, is characterized in that, described the first resistance is composed in parallel by resistance R 8, resistance R 7, resistance R 9.
4. battery charger as claimed in claim 1, is characterized in that, described the second resistance is composed in parallel by resistance R 5, resistance R 3.
5. battery charger as claimed in claim 1, is characterized in that, described the 3rd resistance is composed in parallel by resistance R 29, resistance R 21.
6. battery charger as claimed in claim 1, it is characterized in that, described supply module comprises capacitor C 16, capacitor C 10, capacitor C 11, voltage stabilizing chip U4 and resistance R 19, output VCC is connected with the input of voltage stabilizing chip U4 by resistance R 19, the output of voltage stabilizing chip U4 is connected with the power end of single-chip microcomputer, the earth terminal ground connection of voltage stabilizing chip U4, one end of capacitor C 11 is connected between the input and resistance R 19 of voltage stabilizing chip U4, the other end ground connection of capacitor C 11, one end of capacitor C 16 is connected between the output and the power end of single-chip microcomputer of voltage stabilizing chip U4, the other end ground connection of capacitor C 16, capacitor C 10 is in parallel with capacitor C 16.
7. battery charger as claimed in claim 1, is characterized in that, the model of described single-chip microcomputer is SC91F711.
8. battery charger as claimed in claim 1, is characterized in that, the first output of single-chip microcomputer is connected with a LED lamp by resistance R 24.
9. battery charger as claimed in claim 1, is characterized in that, the second output of single-chip microcomputer is connected with the 2nd LED lamp by resistance R 26.
10. battery charger as claimed in claim 1, is characterized in that, the color of a LED lamp and the 2nd LED lamp is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420090918.5U CN203871911U (en) | 2014-02-28 | 2014-02-28 | Storage battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420090918.5U CN203871911U (en) | 2014-02-28 | 2014-02-28 | Storage battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871911U true CN203871911U (en) | 2014-10-08 |
Family
ID=51652833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420090918.5U Expired - Lifetime CN203871911U (en) | 2014-02-28 | 2014-02-28 | Storage battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871911U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253385A (en) * | 2016-08-12 | 2016-12-21 | 安徽中杰信息科技有限公司 | A kind of battery charger |
| CN106725958A (en) * | 2016-11-04 | 2017-05-31 | 黄拔梓 | The intelligent control circuit of electric toothbrush |
-
2014
- 2014-02-28 CN CN201420090918.5U patent/CN203871911U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253385A (en) * | 2016-08-12 | 2016-12-21 | 安徽中杰信息科技有限公司 | A kind of battery charger |
| CN106725958A (en) * | 2016-11-04 | 2017-05-31 | 黄拔梓 | The intelligent control circuit of electric toothbrush |
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| C14 | Grant of patent or utility model | ||
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