CN104079023B - A kind of charging indicator light control circuit and charger - Google Patents
A kind of charging indicator light control circuit and charger Download PDFInfo
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- CN104079023B CN104079023B CN201310109515.0A CN201310109515A CN104079023B CN 104079023 B CN104079023 B CN 104079023B CN 201310109515 A CN201310109515 A CN 201310109515A CN 104079023 B CN104079023 B CN 104079023B
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- resistance
- display lamp
- operational amplifier
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention proposes a kind of charging indicator light control circuit, including: the input of bleeder circuit is connected with negative input；Bleeder circuit connects the in-phase end of amplifier；One end of first resistance is connected with electrode input end；Amplifier is accessed after first resistance and the second resistant series；Negative electrode and the control end of benchmark manostat are connected between the first resistance and the second resistance；One end of 3rd resistance is connected with the inverting input of amplifier；The other end of the 3rd resistance is connected with the anode of benchmark manostat；The outfan of amplifier connects one end of the 4th resistance, the other end of the 4th resistance and first display lamp one end and connects；One end of 5th resistance connects electrode input end；The colelctor electrode of the other end connecting triode of the 5th resistance；The base stage of audion connects the outfan of amplifier by the 6th resistance；The grounded emitter of audion；One end of second display lamp is connected between the 5th resistance and the colelctor electrode of audion.The present invention also proposes a kind of charger, can accurately indicate charging process.
Description
Technical field
The present invention relates to charging field, particularly relate to a kind of charging indicator light control circuit and charger.
Background technology
Along with the development of rechargeable battery, people more and more use rechargeable battery；In battery charging process,
There is charging indicator light, be used for representing and currently charge, but due to the sampling electricity in indicating lamp control circuit
Pressure instability so that display lamp shows inaccurate sometimes；Battery charging can be caused abnormal, and display lamp turns sometimes
After change, battery is not the most full of, and breaks and carrys out power supply, stops charging and causes the electrical work time short；Or, refer to
Show that lamp fringe time is late, if it is indicated that lamp fringe time is late, cause battery overcharge, shorten battery and use the longevity
Life, and then reduce electrical equipment service life.
Summary of the invention
It is an object of the invention to propose a kind of charging indicator light control circuit and charger, can be to charging
Journey, indicates accurately.
The scheme used:
A kind of charging indicator light control circuit, including: electrode input end, negative input, bleeder circuit,
First resistance, the second resistance, the 3rd resistance, the 4th resistance, benchmark manostat, operational amplifier, first
Display lamp, the 5th resistance, the 6th resistance, audion and the second display lamp；
Wherein, the input of described bleeder circuit is connected with described negative input；Described bleeder circuit defeated
Go out end and connect the in-phase input end of described operational amplifier；
One end of described first resistance is connected with described electrode input end；The other end of described first resistance and institute
The inverting input of described operational amplifier is accessed after stating the second resistant series；
Negative electrode and the control end of described benchmark manostat are connected between described first resistance and the second resistance；Institute
State the minus earth of benchmark manostat；One end of described 3rd resistance and the anti-phase input of described operational amplifier
End connects；The other end of described 3rd resistance is connected with the anode of described benchmark manostat；Described operation amplifier
The positive electrical source of device connects described electrode input end；The negative power supply end ground connection of described operational amplifier；Institute
The outfan stating operational amplifier connects one end of described 4th resistance, the other end of described 4th resistance and institute
State first display lamp one end to connect；The other end ground connection of described first display lamp；
One end of described 5th resistance connects described electrode input end；The other end of described 5th resistance connects institute
State the colelctor electrode of audion；The base stage of described audion connects described operational amplifier by described 6th resistance
Outfan；The grounded emitter of described audion；
One end of described second display lamp is connected between described 5th resistance and the colelctor electrode of described audion；
The other end ground connection of described second display lamp.
And, a kind of charger, including: charging module, charging indicator light control as claimed in claim 1
Circuit processed, wherein, the cathode output end of described charging module is just connecting described charging indicator light control circuit
Pole input；The negative pole that the cathode output end of described charging module connects described charging indicator light control circuit is defeated
Enter end.
In the present invention, when charging, benchmark manostat provide constant to the inverting input of operational amplifier
Voltage；High voltage, the in-phase input end of input operational amplifier is obtained by bleeder circuit；The most now,
The current potential of in-phase input end is higher than inverting input, operational amplifier output high level so that the first display lamp
Bright, the most charge to represent；And the colelctor electrode of audion is now in low level, therefore the second instruction
Lamp does not works；When fully charged, charging current reduces, and now, the current potential of in-phase input end is less than anti-phase input
End, operational amplifier output low level, now the first display lamp does not works, and the colelctor electrode of audion is in high electricity
Flat, drive the second display lamp bright, to represent charging complete；Charging process can be indicated accurately.
Accompanying drawing explanation
Fig. 1 is a structural representation of the charging indicator light control circuit that the present invention proposes；
Fig. 2 is a structural representation of the charging indicator light control circuit that the present invention proposes；
Fig. 3 is a structural representation of the charger that the present invention proposes；
Fig. 4 is a concrete structure figure of the charger that the present invention proposes.
Detailed description of the invention
The present invention proposes a kind of charging indicator light control circuit, shown in its structural representation reference Fig. 1, including:
Electrode input end, negative input, bleeder circuit, the first resistance R2, the second resistance R6, the 3rd resistance
R7, the 4th resistance R13, benchmark manostat U2, operational amplifier A the 1, first display lamp, the 5th resistance
R3, the 6th resistance R9, audion Q1 and the second display lamp；
Wherein, the input of bleeder circuit is connected with negative input；The outfan concatenation operation of bleeder circuit
The in-phase input end of amplifier A1；
One end of first resistance R2 is connected with electrode input end；The other end of the first resistance R2 and the second resistance
The inverting input of operational amplifier A 1 is accessed after R6 series connection；
Negative electrode and the control end of benchmark manostat U2 are connected between the first resistance R2 and the second resistance R6；
The minus earth of benchmark manostat U2；One end of 3rd resistance R7 and the anti-phase input of operational amplifier A 1
End connects；The other end of the 3rd resistance R7 is connected with the anode of benchmark manostat U2；Operational amplifier A 1
Positive electrical source connect electrode input end；The negative power supply end ground connection of operational amplifier A 1；Operational amplifier
The outfan of A1 connects one end of the 4th resistance R13, the other end of the 4th resistance R13 and the first display lamp one
End connects；The other end ground connection of the first display lamp；
One end of 5th resistance R3 connects electrode input end；The other end connecting triode Q1 of the 5th resistance R3
Colelctor electrode；The base stage of the audion Q1 outfan by the 6th resistance R9 concatenation operation amplifier A1；
The grounded emitter of audion Q1；
One end of second display lamp is connected between the 5th resistance R3 and the colelctor electrode of audion Q1；Second refers to
Show the other end ground connection of lamp.
In the present invention, when charging, benchmark manostat provide constant to the inverting input of operational amplifier
Voltage；High voltage, the in-phase input end of input operational amplifier is obtained by bleeder circuit；The most now,
The current potential of in-phase input end is higher than inverting input, operational amplifier output high level so that the first display lamp
Bright, the most charge to represent；And the colelctor electrode of audion is now in low level, therefore the second instruction
Lamp does not works；When fully charged, charging current reduces, and now, the current potential of in-phase input end is less than anti-phase input
End, operational amplifier output low level, now the first display lamp does not works, and the colelctor electrode of audion is in high electricity
Flat, drive the second display lamp bright, to represent charging complete；Charging process can be indicated accurately.
In one embodiment, bleeder circuit includes the 7th resistance R10, the 8th resistance R11；The present invention carries
The structural representation of another charging indicator light control circuit gone out refer to Fig. 2, wherein, and the 7th resistance R10
One end be connected with negative input；Ground connection after the other end of the 7th resistance R10 and the 8th resistance R11 series connection；
The in-phase input end of operational amplifier A 1 is connected between the 7th resistance R10 and the 8th resistance R11.
In the above-described embodiment, the first display lamp is light emitting diode；Second display lamp is sent out as optical diode.
Charge to distinguish more easily to be in or fill with electricity, glow color can be selected to differ
First display lamp of sample and the second display lamp.Such as, when giving a green light, represent and charge；When sending out a warning,
Represent and have been filled with electricity.Can also is that the lamp of other colors, do not limit.
The invention allows for a kind of charger, its structural representation refers to Fig. 3, including: charging module,
Charging indicator light control circuit as claimed in claim 1, wherein, the cathode output end of charging module connects charging
The electrode input end of indicating lamp control circuit；The cathode output end of charging module connects charging indicator light and controls electricity
The negative input on road.
In the present invention, when utilizing charger to be charged, by anti-phase to operational amplifier of benchmark manostat
Input provides constant voltage；Obtaining high voltage by bleeder circuit, the homophase of input operational amplifier is defeated
Enter end；The most now, the current potential of in-phase input end is higher than inverting input, and operational amplifier exports high level,
Make the first display lamp bright, the most charge to represent；And the colelctor electrode of audion is now in low level,
Therefore the second display lamp does not works；When fully charged, charging current reduces, now, and the current potential of in-phase input end
Less than inverting input, operational amplifier output low level, now the first display lamp does not works, the collection of audion
Electrode is in high level, drives the second display lamp bright, to represent charging complete；Charging process can be carried out
Indicate accurately.
In one embodiment, bleeder circuit includes the 7th resistance, the 8th resistance；Wherein, the 7th resistance
One end be connected with negative input；Ground connection after the other end of the 7th resistance and the 8th resistant series；
The in-phase input end of operational amplifier is connected between the 7th resistance and the 8th resistance.
In one embodiment, the first display lamp is light emitting diode；Second display lamp is sent out as optical diode.
In one embodiment, charge to distinguish more easily to be in or fill with electricity, can
To select different first display lamp of glow color and the second display lamp.
As a concrete charger, refer to Fig. 4, charging module is as shown in dotted line frame in Fig. 4, and this fills
Electrical equipment includes: F1 is electric fuse, D1～D4, D5, D6 are commutation diode, and C1, C2 are filtered electrical
Holding, R1～R13 is resistance, integrating control part, and T1 is switch transformer, and U1 is optocoupler, U2, U3
For high-precision voltage stabilizing device 431, A1 is transport and placing device, and BAT is rechargeable battery, and Q1 is NPN audion, LED
Green, LED is red for indication light diode.
Operation principle: after civil power powers on, through D1～D4 rectification, C1 filters, and high-tension electricity passes through transformator
T1 blood pressure lowering is delivered to time polar circuit, and by D5 rectification, C2 filters, then accesses battery by D6.Work as electricity
When cell voltage is less than full piezoelectric voltage, a point voltage is relatively low, and e point voltage is relatively low, and U3 is not turned on, in optocoupler U1
Diode does not has electric current to flow through, and optocoupler audion cuts out, and control circuit does not has feedback signal, charging circuit one
Directly battery is charged.
When large current charge, it is high that electric current flows through R4, R4 both end voltage, i.e. b point voltage is high；Through R8,
R12 dividing potential drop, f point voltage is high, and amplifier A1 high level, i.e. g point is high level；Electric current flows through R13, LED
Green, d point is low level, and green LED is bright, and red led goes out, and represents that charger is in charging shape
State.
Along with the carrying out of charging, cell voltage raises, and a point voltage also raises, and corresponding e point voltage raises, U3
Conducting, three pipes in optocoupler U1 have electric current to flow through, and integrating control part accepts low level signal, charging current
Reducing, flow through the current reduction of R4, R4 both end voltage reduces, i.e. b point voltage reduces, and f point voltage reduces,
Amplifier A1 output low level, the green extinguishing of LED, LED is red to be lighted, battery charging complete.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (8)
1. a charging indicator light control circuit, it is characterised in that including: electrode input end, negative pole input
End, bleeder circuit, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, benchmark manostat, fortune
Calculate amplifier, the first display lamp, the 5th resistance, the 6th resistance, audion and the second display lamp；
Wherein, the input of described bleeder circuit is connected with described negative input；Described bleeder circuit defeated
Go out end and connect the in-phase input end of described operational amplifier, and described bleeder circuit is used for obtaining high voltage, and
Input the in-phase input end of described operational amplifier；
One end of described first resistance is connected with described electrode input end；The other end of described first resistance and institute
The inverting input of described operational amplifier is accessed after stating the second resistant series；
Described benchmark manostat provides constant voltage to the inverting input of operational amplifier；Described benchmark is steady
Negative electrode and the control end of depressor are connected between described first resistance and the second resistance；Described benchmark manostat
Plus earth；Described one end of 3rd resistance is connected with the inverting input of described operational amplifier；Described
The other end of three resistance is connected with the anode of described benchmark manostat；The positive electrical source of described operational amplifier
Connect described electrode input end；The negative power supply end ground connection of described operational amplifier；Described operational amplifier
Outfan connects one end of described 4th resistance, the other end of described 4th resistance and described first display lamp one
End connects；The other end ground connection of described first display lamp；
One end of described 5th resistance connects described electrode input end；The other end of described 5th resistance connects institute
State the colelctor electrode of audion；The base stage of described audion connects described operational amplifier by described 6th resistance
Outfan；The grounded emitter of described audion；
One end of described second display lamp is connected between described 5th resistance and the colelctor electrode of described audion；
The other end ground connection of described second display lamp.
Charging indicator light control circuit the most according to claim 1, it is characterised in that described dividing potential drop electricity
Road includes the 7th resistance, the 8th resistance；
Wherein, one end of described 7th resistance is connected with described negative input；Another of described 7th resistance
Ground connection after end and described 8th resistant series；
The in-phase input end of described operational amplifier is connected between described 7th resistance and the 8th resistance.
Charging indicator light control circuit the most according to claim 1, it is characterised in that described first refers to
Show that lamp is light emitting diode；Described second display lamp is sent out as optical diode.
4. according to the charging indicator light control circuit described in any one of claims 1 to 3, it is characterised in that
Described first display lamp is different with described second display lamp glow color.
5. a charger, it is characterised in that including: charging module, charge as claimed in claim 1
Indicating lamp control circuit, wherein, the cathode output end of described charging module connects described charging indicator light and controls
The electrode input end of circuit；The cathode output end of described charging module connects described charging indicator light control circuit
Negative input.
Charger the most according to claim 5, it is characterised in that described bleeder circuit includes the 7th electricity
Resistance, the 8th resistance；Wherein, one end of described 7th resistance is connected with described negative input；Described 7th
Ground connection after the other end of resistance and described 8th resistant series；
The in-phase input end of described operational amplifier is connected between described 7th resistance and the 8th resistance.
Charger the most according to claim 5, it is characterised in that described first display lamp is luminous two
Pole is managed；Described second display lamp is sent out as optical diode.
8. according to the charger described in any one of claim 5 to 7, it is characterised in that described first instruction
Lamp is different with described second display lamp glow color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109515.0A CN104079023B (en) | 2013-03-29 | 2013-03-29 | A kind of charging indicator light control circuit and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109515.0A CN104079023B (en) | 2013-03-29 | 2013-03-29 | A kind of charging indicator light control circuit and charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104079023A CN104079023A (en) | 2014-10-01 |
| CN104079023B true CN104079023B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310109515.0A Expired - Fee Related CN104079023B (en) | 2013-03-29 | 2013-03-29 | A kind of charging indicator light control circuit and charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104079023B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332308A (en) * | 2017-07-18 | 2017-11-07 | 深圳市华星光电半导体显示技术有限公司 | Charging turns circuit for lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202076815U (en) * | 2011-05-17 | 2011-12-14 | 汪阳 | Charger |
| CN202167888U (en) * | 2011-07-21 | 2012-03-14 | 徐州市恒源电器有限公司 | Lithium battery charger |
| CN202171848U (en) * | 2011-08-16 | 2012-03-21 | 钱福明 | Charging type indicating rod |
| CN202353272U (en) * | 2011-12-15 | 2012-07-25 | 濮阳三友电器有限公司 | Saturation indicating circuit |
-
2013
- 2013-03-29 CN CN201310109515.0A patent/CN104079023B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202076815U (en) * | 2011-05-17 | 2011-12-14 | 汪阳 | Charger |
| CN202167888U (en) * | 2011-07-21 | 2012-03-14 | 徐州市恒源电器有限公司 | Lithium battery charger |
| CN202171848U (en) * | 2011-08-16 | 2012-03-21 | 钱福明 | Charging type indicating rod |
| CN202353272U (en) * | 2011-12-15 | 2012-07-25 | 濮阳三友电器有限公司 | Saturation indicating circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104079023A (en) | 2014-10-01 |
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Granted publication date: 20161228 Termination date: 20190329 |