CN103580082B - A kind of charging unit - Google Patents
A kind of charging unit Download PDFInfo
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- CN103580082B CN103580082B CN201210277187.0A CN201210277187A CN103580082B CN 103580082 B CN103580082 B CN 103580082B CN 201210277187 A CN201210277187 A CN 201210277187A CN 103580082 B CN103580082 B CN 103580082B
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Abstract
The invention discloses a kind of charging unit, described device includes：Control circuit and the regulator circuit being connected respectively with control circuit, voltage sampling circuit, current sampling circuit, DC/DC translation circuits, display circuit.It is an object of the invention to provide a kind of charging unit, by using microcontroller as control circuit, can carry out constant current constant voltage control to whole charging process according to typical lithium battery quick charge curve, realize quick charge.And combination temperature protection circuit, time set circuit; not only possess low-voltage and cross flow short-circuit and in limited time the multiple security protection function such as charging; it may recognize that the lithium battery scrapped and have been filled with battery; it can realize that quick charge and trickle charge are automatically switched, and can also be charged by changing or upgrading software to the rechargeable lithium battery of other types or capacity.It is simple intelligent, vdiverse in function, easy to use, of low cost and easily scalable.
Description
Technical field
The present invention relates to charging technique field, more particularly to a kind of charging unit.
Background technology
At present, many electronic products or electrical equipment are all using rechargeable lithium battery as main energy source, therefore be
Meet electronic product or the use needs of electrical equipment, fast and safely charged to lithium battery and be just particularly important.
Charging unit of the prior art can only be directed to a kind of model more or the lithium battery of capacity charges, function list
One, it is not conveniently scalable.
The content of the invention
The embodiment of the present invention provides a kind of charging unit, and the lithium battery of Multiple Type or capacity can be carried out safely and fast
Charging.
In order to solve the above-mentioned technical problem, an embodiment of the present invention provides a kind of charging unit, the charging unit to include
It is control circuit and the DC/DC translation circuits being connected respectively with the control circuit, voltage sampling circuit, current sampling circuit, steady
Volt circuit, display circuit, wherein：
The voltage sampling circuit, the current sampling circuit are connected with the DC/DC translation circuits respectively；
The control circuit is connected by the regulator circuit with power input；
The DC/DC translation circuits are connected with the power input.
Further, the charging unit further includes temperature protection circuit, the temperature protection circuit and the control electricity
Road is connected.
Further, the charging unit further includes circuits, and the time set circuit is connected with the control circuit.
Further, the control circuit includes one 8 microcontrollers.
Further, the first foot of 8 microcontrollers is connected by the regulator circuit with power input；
Crus secunda to the 7th foot of 8 microcontrollers is I/O mouthfuls, the DC/DC translation circuits, the voltage sample
Circuit, the current sampling circuit, the display circuit, the temperature protection circuit and the time set circuit respectively with institute
State 8 microcontrollers any I/O mouthfuls are connected；
The octal ground connection of 8 microcontrollers.
Further, the DC/DC translation circuits include a BUCK topological circuits, and the BUCK topological circuits include：MOS
Pipe Q1, triode Q3, Q4 and Q5, diode D1 and D2, inductance L1, electrolytic capacitor C3, resistance R1, R2, R3, R5 and R7, wherein：
The source electrode of the metal-oxide-semiconductor Q1 is connected with the power input, and drain one end with the inductance L1 and institute respectively
The cathode for stating diode D1 is connected, and emitter of the grid respectively with the triode Q3 and Q4 is connected；
The triode Q3 is NPN type, and the collector of the triode Q3 is connected with the power input, three pole
The base stage of pipe Q3 is connected by the resistance R2 with the power input, and respectively with the base stage of the triode Q4 and described
The collector of triode Q5 is connected, and the emitter of the triode Q3 is connected by the resistance R1 with the power input,
And it is connected respectively with the emitter of the triode Q4 and the grid of the metal-oxide-semiconductor Q1；
The triode Q4 is positive-negative-positive, the grounded collector of the triode Q4, the base stage of the triode Q4 respectively with
The base stage of the triode Q3 is connected with the collector of the triode Q5, and the emitter of the triode Q4 is respectively with described three
The emitter of pole pipe Q3 is connected with the grid of the metal-oxide-semiconductor Q1；
The triode Q5 is NPN type, the collector of the triode Q5 base stage with the triode Q3 and Q4 respectively
It is connected, the base stage of the triode Q5 is connected by the resistance R5 with any I/O mouthfuls of free time of 8 microcontrollers, and logical
Cross the resistance R7 ground connection, the emitter ground connection of the triode Q5；
The diode D1 is fly-wheel diode, the cathode of the diode D1 respectively with the drain electrode of the metal-oxide-semiconductor Q1 and
One end of the inductance L1 is connected, the plus earth of the diode D1；
The diode D2 is isolating diode, and the cathode of the diode D2 is connected with the voltage sampling circuit, institute
The anode for stating diode D2 is connected with one end of the inductance L1；
One end of the inductance L1 is connected with the drain electrode of the metal-oxide-semiconductor and the cathode of the diode D1 respectively, the electricity
The other end of sense L1 is grounded by the resistance R3, and the anode phase with the electrolytic capacitor C3 and the diode D2 respectively
Even；
The anode of the electrolytic capacitor C3 is connected with one end of the inductance L1, the minus earth of the electrolytic capacitor C3.
Further, the regulator circuit includes voltage reference chip U2, triode Q2, capacitance C4, electrolytic capacitor C5, electricity
Resistance R4, R6, R8 and R9, the first built-in power, wherein：
The crus secunda of the voltage reference chip U2 is connected by the resistance R4 with the power input, and with it is described
The base stage of triode Q2 is connected, and the first foot of the voltage reference chip U2 passes through the resistance R6 and the hair for implementing triode Q2
Emitter-base bandgap grading is connected, the 3rd foot ground connection of the voltage reference chip U2；
The collector of the triode Q2 is connected with the power input, base stage and the voltage of the triode Q2
The crus secunda of fiducial chip U2 is connected, and the emitter of the triode Q2 is grounded by the resistance R6 and R9, and with the electricity
The one end for holding C4 is connected；
One end of the capacitance C4 is connected with the emitter of the triode Q2, the anode of the electrolytic capacitor C5, institute
State the other end ground connection of capacitance C4；
The anode of the electrolytic capacitor C5 is connected with the capacitance C4, first built-in power, and with 8 lists
The first foot of piece machine is connected, the minus earth of the electrolytic capacitor C5；
Connect after the resistance R8 and R9 parallel connections with the resistance R6.
Further, the voltage sampling circuit includes capacitance C6 and C7, resistance R10 and R11, wherein：
One end of the capacitance C6 is connected with one end of the capacitance C7, the other end and the DC/DC of the capacitance C6
Translation circuit is connected, and the resistance R10 is in parallel with the capacitance C6；
One end of the capacitance C7 is connected with one end of the capacitance C6, and with any free time I/O of 8 microcontrollers
Mouth is connected, and the resistance R11 is in parallel with the capacitance C7.
Further, the current sampling circuit includes capacitance C8, resistance R13, R15 and R16, wherein：
The capacitance C8 is connected with any I/O mouthfuls of free time of 8 microcontrollers, and is connect by the resistance R13 and R16
Ground, the other end ground connection of the capacitance C8, the resistance R15 are in parallel with the capacitance C8.
Further, the display circuit includes electrodeless dual color light emitting LED1, resistance R17, R21 and the second built-in power,
Wherein：
One end of the electrodeless dual color light emitting LED1 is passed through by resistance R17 connections second built-in power
The resistance R21 ground connection, any I/O mouthfuls of phases of free time of the other end of the electrodeless dual color light emitting LED1 and 8 microcontrollers
Even.
Further, the temperature protection circuit includes thermistor R18, triode Q6, resistance R12, R14 and R19, the
Three built-in powers, wherein：
The base stage of the triode Q6 is connected with the thermistor R18 and resistance R14, R19, the triode Q6's
Collector is connected by the resistance R12 with the 3rd built-in power, and with any I/O mouthfuls of free time of 8 microcontrollers
It is connected, the emitter ground connection of the triode Q6；
The thermistor R18 and resistance R19 are grounded.
Further, the time set circuit includes resistance R20 and R22, the 4th built-in power, wherein：
The resistance R20 is connected with the 4th built-in power, and is grounded by the resistance R22；
The resistance R20 and R22 is connected with any I/O mouthfuls of free time of 8 microcontrollers.
Implement the embodiment of the present invention, have the advantages that：
The embodiment of the present invention by control circuit according to typical lithium battery quick charge curve to whole charging process into
Row constant current constant voltage controls, it is possible to achieve quick charge and trickle charge are automatically switched, and can also by changing or upgrading software
Charge to the rechargeable lithium battery of other types or capacity.It is simple intelligent, vdiverse in function, easy to use, of low cost and
It is easily scalable.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of charging unit provided in an embodiment of the present invention；
Fig. 2 is the circuit diagram of charging unit provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, belongs to the scope of protection of the invention.
Fig. 1 is referred to, is the structure diagram of charging unit provided in an embodiment of the present invention.The charging unit includes：
Control circuit 01, DC/DC translation circuits 02, voltage sampling circuit 03, current sampling circuit 04, regulator circuit 05 and display circuit
06。
Specifically, control circuit 01 includes one 8 microcontrollers, respectively with DC/DC translation circuits 02, voltage sampling circuit
03rd, current sampling circuit 04, regulator circuit 05 are connected with display circuit 06.Control circuit 01 is defeated by regulator circuit 05 and power supply
Enter end to be connected.DC/DC translation circuits 02 are connected with power input.
Low voltage direct current realizes voltage stabilizing through regulator circuit 05 all the way, is used for control circuit 01 and its peripheral circuit；One
Road is realized through DC/DC translation circuits 02 and is depressured, and charges the battery.
Voltage sampling circuit 03, current sampling circuit 04 are connected with DC/DC translation circuits 02 respectively, and control circuit 01 passes through
After voltage sampling circuit 03 and current sampling circuit 04, PWM ripples are exported, control the working status of DC/DC translation circuits 02, so as to
Corresponding charging strategy is used to battery according to the state of battery.Concrete operating principle will be explained below.
Control circuit 02 controls the dispaly state of display circuit 06 according to the charge condition of battery, to remind user that battery is
No to be full of, equally, concrete operating principle will be explained below.
Further, further included continuing with referring to Fig. 1, the charging unit：Temperature protection circuit 07 and time set electricity
Road 08.
Specifically, temperature protection circuit 07, time set circuit 08 are connected with control circuit 01.
Fig. 2 is referred to, is the circuit diagram of illumination alert device provided in an embodiment of the present invention.
Further, control circuit 01 includes one 8 microcontrollers.
Further, the foot 1 of 8 microcontrollers is connected by the regulator circuit with power input S1；
The foot 2 of 8 microcontrollers to foot 7 is I/O mouthfuls, and DC/DC translation circuits 02, voltage sampling circuit 03, electric current are adopted
Sample circuit 04, display circuit 06, temperature protection circuit 07 and time set circuit 08 any I/O mouthfuls with 8 microcontrollers respectively
It is connected；
The foot 8 of 8 microcontrollers is grounded.
Further, DC/DC translation circuits 02 include a BUCK topological circuits, which includes：Metal-oxide-semiconductor
Q1, triode Q3, Q4 and Q5, diode D1 and D2, inductance L1, electrolytic capacitor C3, resistance R1, R2, R3, R5 and R7, wherein：
The source electrode of the metal-oxide-semiconductor Q1 is connected with the power input S1, drain electrode respectively with one end of the inductance L1 and
The cathode of the diode D1 is connected, and emitter of the grid respectively with the triode Q3 and Q4 is connected；
The triode Q3 is NPN type, and the collector of the triode Q3 is connected with the power input S1, described three
The base stage of pole pipe Q3 is connected by the resistance R2 with the power input S1, and respectively with the base stage of the triode Q4 and
The collector of the triode Q5 is connected, and the emitter of the triode Q3 passes through the resistance R1 and the power input S1
It is connected, and is connected respectively with the emitter of the triode Q4 and the grid of the metal-oxide-semiconductor Q1；
The triode Q4 is positive-negative-positive, the grounded collector of the triode Q4, the base stage of the triode Q4 respectively with
The base stage of the triode Q3 is connected with the collector of the triode Q5, and the emitter of the triode Q4 is respectively with described three
The emitter of pole pipe Q3 is connected with the grid of the metal-oxide-semiconductor Q1；
The triode Q5 is NPN type, the collector of the triode Q5 base stage with the triode Q3 and Q4 respectively
It is connected, the base stage of the triode Q5 is connected by the resistance R5 with any I/O mouthfuls of free time of 8 microcontrollers, and logical
Cross the resistance R7 ground connection, the emitter ground connection of the triode Q5；
The diode D1 is fly-wheel diode, the cathode of the diode D1 respectively with the drain electrode of the metal-oxide-semiconductor Q1 and
One end of the inductance L1 is connected, the plus earth of the diode D1；
The diode D2 is isolating diode, and the cathode of the diode D2 is connected with the voltage sampling circuit 03,
The anode of the diode D2 is connected with one end of the inductance L1；
One end of the inductance L1 is connected with the drain electrode of the metal-oxide-semiconductor and the cathode of the diode D1 respectively, the electricity
The other end of sense L1 is grounded by the resistance R3, and the anode phase with the electrolytic capacitor C3 and the diode D2 respectively
Even；
The anode of the electrolytic capacitor C3 is connected with one end of the inductance L1, the minus earth of the electrolytic capacitor C3.
Further, regulator circuit 05 includes voltage reference chip U2, triode Q2, capacitance C4, electrolytic capacitor C5, resistance
R4, R6, R8 and R9, the first built-in power, wherein：
The foot 2 of the voltage reference chip U2 is connected by the resistance R4 with the power input S1, and with it is described
The base stage of triode Q2 is connected, and the foot 1 of the voltage reference chip U2 passes through the resistance R6 and the transmitting for implementing triode Q2
Extremely it is connected, the foot 3 of the voltage reference chip U2 is grounded；
The collector of the triode Q2 is connected with the power input S1, base stage and the electricity of the triode Q2
Press the foot 2 of fiducial chip U2 to be connected, the emitter of the triode Q2 is grounded by the resistance R6 and R9, and with the capacitance
One end of C4 is connected；
One end of the capacitance C4 is connected with the emitter of the triode Q2, the anode of the electrolytic capacitor C5, institute
State the other end ground connection of capacitance C4；
The anode of the electrolytic capacitor C5 is connected with the capacitance C4, first built-in power, and with 8 lists
Piece under-chassis 1 is connected, the minus earth of the electrolytic capacitor C5；
Connect after the resistance R8 and R9 parallel connections with the resistance R6.
Further, voltage sampling circuit 03 includes capacitance C6 and C7, resistance R10 and R11, wherein：
One end of the capacitance C6 is connected with one end of the capacitance C7, the other end and the DC/DC of the capacitance C6
Translation circuit 02 is connected, and when being implanted into rechargeable battery BT1 in charging unit, is connected with the cathode of rechargeable battery BT1, the electricity
It is in parallel with the capacitance C6 to hinder R10；
One end of the capacitance C7 is connected with one end of the capacitance C6, and with any free time I/O of 8 microcontrollers
Mouth is connected, and the resistance R11 is in parallel with the capacitance C7.
Further, current sampling circuit 04 includes capacitance C8, resistance R13, R15 and R16, wherein：
The capacitance C8 is connected with any I/O mouthfuls of free time of 8 microcontrollers, and is connect by the resistance R13 and R16
Ground, the other end ground connection of the capacitance C8, the resistance R15 are in parallel with the capacitance C8.
When being implanted into rechargeable battery BT1 in charging unit, the anode of rechargeable battery BT1 is grounded by the resistance R16.
Further, display circuit 06 includes electrodeless dual color light emitting LED1, resistance R17, R21 and the second built-in power, its
In：
One end of the electrodeless dual color light emitting LED1 is passed through by resistance R17 connections second built-in power
The resistance R21 ground connection, any I/O mouthfuls of phases of free time of the other end of the electrodeless dual color light emitting LED1 and 8 microcontrollers
Even.
Further, temperature protection circuit 07 includes thermistor R18, triode Q6, resistance R12, R14 and R19, and the 3rd
Built-in power, wherein：
The base stage of the triode Q6 is connected with the thermistor R18 and resistance R14, R19, the triode Q6's
Collector is connected by the resistance R12 with the 3rd built-in power, and with any I/O mouthfuls of free time of 8 microcontrollers
It is connected, the emitter ground connection of the triode Q6；
The thermistor R18 and resistance R19 are grounded.
Further, time set circuit 08 includes resistance R20 and R22, the 4th built-in power, wherein：
The resistance R20 is connected with the 4th built-in power, and is grounded by the resistance R22；
The resistance R20 and R22 is connected with any I/O mouthfuls of free time of 8 microcontrollers.
Specifically, 8 microcontrollers that control circuit 01 includes share eight pins, except foot 1 connects power input S1, foot 8
Ground connection is outer, and other six feet are I/O mouthfuls（In/out mouthfuls）, can be connected with any circuit.
In the present embodiment, eight pins of 8 microcontrollers are adopted with DC/DC translation circuits 02, voltage in control circuit 01
Sample circuit 03, current sampling circuit 04, regulator circuit 05, display circuit 06, temperature protection circuit 07 and time set circuit 08
Connection relation it is as shown in Figure 2：Foot 1 connects power input S1 by regulator circuit 05, and foot 2 connects display circuit 06, and foot 3 connects
Time set circuit 08 is connect, foot 4 connects temperature protection circuit 07, and foot 5 connects voltage sampling circuit by DC/DC translation circuits 02
03 and current sampling circuit 04, foot 6 connects current sampling circuit 04, and foot 7 connects voltage sampling circuit 03, and foot 8 is grounded.
Certainly, in the other possible embodiments of the present invention, control circuit 01 meets power input S1 except foot 1, and foot 8 is grounded
Outside, the connection relation with other each circuits can not also be same, and this will not be repeated here.
In addition, the charging unit is additionally provided with electrolytic capacitor C1 and capacitance C2 and power input S1 phases with filter action
Even, wherein, the anode of electrolytic capacitor C1 is connected with power input S1, the minus earth of electrolytic capacitor C1；One end of capacitance C2
It is connected with power input S1, the other end ground connection of capacitance C2.
Regulator circuit 05 is mainly made of voltage reference chip U2 and triode Q2, by resistance R6, R8, R9 adjustment output electricity
Pressure.C4, C5 are filter capacitor, and accurately voltage is capable of providing after filtering, can not only be used for the operating voltage of other circuits, can also
The VCC for being supplied to microcontroller as reference voltage is used.
Display circuit 06 uses electrodeless dual color light emitting LED1 lamps.The 2nd foot being connected due to microcontroller with display circuit 06
Three kinds of high level, low level and high resistant states can be exported, therefore, display circuit 06 can realize red, green, three kinds of states of going out entirely,
To prompt the different conditions of rechargeable battery.For example when charging, the foot 2 of microcontroller exports high level, LED1 when reds；
When battery is fully charged, the 2nd foot output low level of microcontroller, LED1 green lights；When no battery charges, the of microcontroller
2 feet export high-impedance state, and LED1 goes out entirely.
Time set circuit 08 is a resistor voltage divider circuit in fact, single according to the model or capacity of different rechargeable batteries
Piece machine sets the different charge timing time by setting the magnitude of voltage of time set circuit 08.For example, monolithic under-chassis 3 samples
Voltage to time set circuit 08 is 0, then when the charge timing time is 5 small；The 3rd foot of microcontroller samples time set circuit
08 voltage is more than 4V, then when the charge timing time is 10 small.Time set circuit 08 can be when rechargeable battery breaks down
Play a protective role, avoid rechargeable battery can not be full of cannot automatically power off caused by the charging interval is long, charging unit mistake
The problem of hot, effectively avoid security risk.
Temperature protection circuit 07 mainly realizes temperature protection function by thermistor R18 and triode Q6, when temperature-sensitive electricity
After resistance R18 is heated, resistance diminishes, trigger triode Q6 actions, makes the 4th foot of the microcontroller that the collector with triode Q6 is connected
Level change, when level is high level, triggering microcontroller enter high temperature alarm state, such as beep or
Vibration or light flash are dangerous to prompt user temperature excessive.
Voltage sampling circuit 03 and current sampling circuit 04, form by some resistance and capacitance.In a kind of possible reality
In existing mode, rechargeable battery is placed between voltage sampling circuit 03 and current sampling circuit 04, so that voltage sampling circuit 03 is right
The voltage of rechargeable battery carries out partial pressure post-sampling, and current sampling circuit 04 directly samples the electric current of rechargeable battery.
DC/DC translation circuits 02 are a BUCK topological circuits, realize voltage conversion, and the foot 5 of microcontroller is adopted by voltage
After sample circuit 03 and current sampling circuit 04, according to charged battery voltage and the real-time change of electric current, corresponding pulsewidth tune is exported
(Pulse Width Modulation, PWM) ripple is made, control DC/DC translation circuits export corresponding voltage, to realize to charging
Cell safety quickly charges.
Control circuit 01, is made of 8 monolithics, is the core of the charging unit.
Microcontroller after the power is turned on, internal initialization first, then sampling timing the voltage of circuit 08 is set, when preserving timing
Between.Then, microcontroller starts to sample the voltage of rechargeable battery.After rechargeable battery is implanted into, charging unit detection battery
Voltage, if cell voltage is 0-2.9V ± 0.05V, enters preliminary filling with 200mA ± 20mA constant-current charges, and during preliminary filling, LED1 is shown
Show red；If cell voltage reaches 2.9V ± more than 0.05V in 38 minutes, charging enters fast charge process.Fast charge process
Constant-current charge is carried out with the electric current of 1000mA ± 100mA；It is permanent after charged battery voltage reaches final voltage 4.2V ± 0.05V
Current charge terminates, charging current rapid decrement, and charging, which enters, completely fills process.Process is completely filled to carry out with the voltage of 4.2V ± 0.05V
Constant-voltage charge.During completely filling, after charging current is reduced to 100mA ± 15mA, charging complete stops charging, and LED1 is shown
Green.The value of constant-voltage and continuous current is set mainly according to typical lithium battery quick charge curve in the above process
Carry out.Battery be full of or one wheel charging complete after, if rechargeable battery is not extracted, charging unit is yet by voltage sampling circuit
The voltage of 03 monitoring battery, when cell voltage is less than 3.9V ± 0.05V（Because lithium battery can self discharge）, continue as battery and fill
Electricity.
The embodiment of the present invention by using microcontroller as control circuit, can be bent according to typical lithium battery quick charge
Line carries out constant current constant voltage control to whole charging process, realizes quick charge.And combination temperature protection circuit, time set electricity
Road, not only possesses low-voltage and crosses flow short-circuit and in limited time the multiple security protection function such as charging, may recognize that the lithium electricity scrapped
Pond and battery is had been filled with, can realize that quick charge and trickle charge are automatically switched, and can also be right by changing or upgrading software
The rechargeable lithium battery of other types or capacity charges.It is simple intelligent, vdiverse in function, easy to use, of low cost and easy
In upgrading.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required hardware platform to realize, naturally it is also possible to is all implemented by hardware.Based on such understanding,
What technical scheme contributed background technology can be embodied in the form of software product in whole or in part,
The computer software product can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are making
Obtain a computer equipment（Can be personal computer, server, or network equipment etc.）Perform each embodiment of the present invention
Or the method described in some parts of embodiment.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
Enclose, one of ordinary skill in the art will appreciate that realize all or part of flow of above-described embodiment, and will according to right of the present invention
Made equivalent variations are sought, still falls within and invents covered scope.
Claims (9)
- A kind of 1. charging unit, it is characterised in that the DC/DC conversion being connected including control circuit and respectively with the control circuit Circuit, voltage sampling circuit, current sampling circuit, regulator circuit, display circuit and time set circuit, wherein：The voltage sampling circuit, the current sampling circuit are connected with the DC/DC translation circuits respectively；The control circuit is connected by the regulator circuit with power input；The DC/DC translation circuits are connected with the power input, and the DC/DC translation circuits include BUCK topological circuits, The BUCK topological circuits include：Metal-oxide-semiconductor Q1, triode Q3, Q4 and Q5, diode D1 and D2, inductance L1, electrolytic capacitor C3, Resistance R1, R2, R3, R5 and R7, wherein：The source electrode of the metal-oxide-semiconductor Q1 is connected with the power input, drain electrode respectively with it is described One end of inductance L1 is connected with the cathode of the diode D1, and emitter of the grid respectively with the triode Q3 and Q4 is connected； The collector of the triode Q3 is connected with the power input, and the base stage of the triode Q3 passes through the resistance R2 and institute State power input to be connected, and be connected respectively with the base stage of the triode Q4 and the collector of the triode Q5, described three The emitter of pole pipe Q3 is connected by the resistance R1 with the power input, and the emitter with the triode Q4 respectively It is connected with the grid of the metal-oxide-semiconductor Q1；The grounded collector of the triode Q4, the base stage of the triode Q4 respectively with it is described The base stage of triode Q3 is connected with the collector of the triode Q5, the emitter of the triode Q4 respectively with the triode The emitter of Q3 is connected with the grid of the metal-oxide-semiconductor Q1；The collector of the triode Q5 respectively with the triode Q3 and Q4 Base stage be connected, the base stage of the triode Q5 is connected by the resistance R5 with I/O mouthfuls of a free time of the control circuit, And it is grounded by the resistance R7, the emitter ground connection of the triode Q5；The cathode of the diode D1 respectively with the MOS The drain electrode of pipe Q1 is connected with one end of the inductance L1, the plus earth of the diode D1；The cathode of the diode D2 with The voltage sampling circuit is connected, and the anode of the diode D2 is connected with one end of the inductance L1；The one of the inductance L1 End is connected with the drain electrode of the metal-oxide-semiconductor and the cathode of the diode D1 respectively, and the other end of the inductance L1 passes through the electricity R3 ground connection is hindered, and the anode with the electrolytic capacitor C3 and the diode D2 is connected respectively；The anode of the electrolytic capacitor C3 It is connected with one end of the inductance L1, the minus earth of the electrolytic capacitor C3；The time set circuit is resistor voltage divider circuit, and is connected with the control circuit, and the control circuit is according to difference Rechargeable battery pass through charge timing time for setting the magnitude of voltage of the time set circuit to set different, the charging electricity Pond is placed between the voltage sampling circuit and the current sampling circuit, wherein, the voltage sampling circuit includes capacitance C6 And C7, resistance R10 and R11, one end of the capacitance C6 are connected with one end of the capacitance C7, the other end of the capacitance C6 with The DC/DC translation circuits are connected, and the resistance R10 is in parallel with the capacitance C6；One end of the capacitance C7 and the capacitance One end of C6 is connected, and is connected with an I/O mouthfuls of the control circuit, and the resistance R11 is in parallel with the capacitance C7；The electricity Flowing sample circuit includes capacitance C8, resistance R13, R15 and R16, the capacitance C8 and I/O mouthfuls of a free time of the control circuit It is connected, and is grounded by the resistance R13 and R16, the other end of the capacitance C8 is grounded, the resistance R15 and the capacitance C8 is in parallel.
- 2. device as claimed in claim 1, it is characterised in that further include：Temperature protection circuit, the temperature protection circuit are connected with the control circuit.
- 3. device as claimed in claim 2, it is characterised in that the control circuit includes one 8 microcontrollers.
- 4. device as claimed in claim 3, it is characterised in that：First foot of 8 microcontrollers is connected by the regulator circuit with power input；Crus secunda to the 7th foot of 8 microcontrollers is I/O mouthfuls, the display circuit, the time set circuit, described Temperature protection circuit, the current sampling circuit, the voltage sampling circuit and the DC/DC translation circuits are respectively with described 8 Any I/O mouthfuls of position microcontroller are connected；The octal ground connection of 8 microcontrollers.
- 5. device as claimed in claim 4, it is characterised in thatThe triode Q3 is NPN type, and the triode Q4 is positive-negative-positive, and the triode Q5 is NPN type, the diode D1 For fly-wheel diode, the diode D2 is isolating diode.
- 6. device as claimed in claim 4, it is characterised in that the regulator circuit includes voltage reference chip U2, triode Q2, capacitance C4, electrolytic capacitor C5, resistance R4, R6, R8 and R9, the first built-in power, wherein：The crus secunda of the voltage reference chip U2 is connected by the resistance R4 with the power input, and with three pole The base stage of pipe Q2 is connected, and the first foot of the voltage reference chip U2 passes through the resistance R6 and the emitter for implementing triode Q2 It is connected, the crus secunda ground connection of the voltage reference chip U2；The collector of the triode Q2 is connected with the power input, base stage and the voltage reference of the triode Q2 The crus secunda of chip U2 is connected, and the emitter of the triode Q2 is grounded by the resistance R6 and R9, and with the capacitance C4 One end be connected；One end of the capacitance C4 is connected with the emitter of the triode Q2, the anode of the electrolytic capacitor C5, the electricity Hold the other end ground connection of C4；The anode of the electrolytic capacitor C5 is connected with the capacitance C4, first built-in power, and with 8 microcontrollers Crus secunda is connected, the minus earth of the electrolytic capacitor C5；Connect after the resistance R8 and R9 parallel connections with the resistance R6.
- 7. device as claimed in claim 4, it is characterised in that the display circuit includes electrodeless dual color light emitting LED1, resistance R17, R21 and the second built-in power, wherein：One end of the electrodeless dual color light emitting LED1 is by resistance R17 connections second built-in power, and by described Resistance R21 is grounded, and the other end of the electrodeless dual color light emitting LED1 is connected with any I/O mouthfuls of free time of 8 microcontrollers.
- 8. device as claimed in claim 4, it is characterised in that the temperature protection circuit includes thermistor R18, triode Q6, resistance R12, R14 and R19, the 3rd built-in power, wherein：The base stage of the triode Q6 is connected with the thermistor R18 and resistance R14, R19, the current collection of the triode Q6 Pole is connected by the resistance R12 with the 3rd built-in power, and is connected with any I/O mouthfuls of free time of 8 microcontrollers, The emitter ground connection of the triode Q6；The thermistor R18 and resistance R19 are grounded.
- 9. device as claimed in claim 4, it is characterised in that the time set circuit includes resistance R20 and R22, and the 4th Built-in power, wherein：The resistance R20 is connected with the 4th built-in power, and is grounded by the resistance R22；The resistance R20 and R22 is connected with any I/O mouthfuls of free time of 8 microcontrollers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210277187.0A CN103580082B (en) | 2012-08-06 | 2012-08-06 | A kind of charging unit |
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| CN201210277187.0A CN103580082B (en) | 2012-08-06 | 2012-08-06 | A kind of charging unit |
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| CN103580082A CN103580082A (en) | 2014-02-12 |
| CN103580082B true CN103580082B (en) | 2018-05-08 |
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| CN105743171A (en) * | 2016-03-29 | 2016-07-06 | 深圳市安全快充技术有限公司 | Intelligent rapid charging apparatus |
| CN107171410A (en) * | 2017-07-18 | 2017-09-15 | 姬丰产 | A kind of charger temperature control protective device and charger |
| CN110838739B (en) * | 2018-08-17 | 2023-03-14 | 群光电能科技(苏州)有限公司 | Charging device and operation method thereof |
| CN111404238A (en) * | 2020-04-28 | 2020-07-10 | 上海电力大学 | Lithium battery pack charging device |
| CN112234666B (en) * | 2020-09-04 | 2022-06-17 | 宁波唯嘉电子科技有限公司 | Lithium battery charging and discharging circuit of tool lamp |
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|---|---|---|---|---|
| CN2662518Y (en) * | 2003-11-13 | 2004-12-08 | 福州高奇晶圆电子科技有限公司 | Fast charger for nickel-hydrogen cell |
| CN101098085A (en) * | 2006-06-27 | 2008-01-02 | 雅马哈发动机株式会社 | Charging device |
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| KR0173961B1 (en) * | 1996-06-24 | 1999-05-01 | 김광호 | Mode conversion type battery charging apparatus |
| CN2919648Y (en) * | 2006-07-12 | 2007-07-04 | 比亚迪股份有限公司 | Battery charging controlling circuit |
| JP2008193797A (en) * | 2007-02-05 | 2008-08-21 | Hitachi Koki Co Ltd | Charging device |
| CN101388553A (en) * | 2007-09-11 | 2009-03-18 | 上海沪钥电子有限公司 | Current charger |
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| CN2662518Y (en) * | 2003-11-13 | 2004-12-08 | 福州高奇晶圆电子科技有限公司 | Fast charger for nickel-hydrogen cell |
| CN101098085A (en) * | 2006-06-27 | 2008-01-02 | 雅马哈发动机株式会社 | Charging device |
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