CN207200327U - A kind of quick-charging circuit - Google Patents
A kind of quick-charging circuit Download PDFInfo
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- CN207200327U CN207200327U CN201721052206.4U CN201721052206U CN207200327U CN 207200327 U CN207200327 U CN 207200327U CN 201721052206 U CN201721052206 U CN 201721052206U CN 207200327 U CN207200327 U CN 207200327U
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- 239000003381 stabilizer Substances 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 230000005622 photoelectricity Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 1
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of quick-charging circuit, including：First resistor, its one end are connected with charging end；One end connection of second resistance, its one end and first resistor；The other end of the other end connection of the first transistor, its first pin and first resistor, three-prong and second resistance connects；3rd resistor, its one end ground connection；One end connection of 4th resistance, its one end and 3rd resistor, the other end are connected with the first charging end；The second pin connection of second transistor, its first pin and the first transistor, the second pin ground connection, three-prong are connected with one end of the 4th resistance；Voltage-stabiliser tube, its first pin are connected with one end of the 4th resistance；The three-prong connection of photoelectrical coupler, its first end and voltage-stabiliser tube, the second end is connected with charging end, and the 3rd end of photoelectrical coupler and the 4th end are connected with voltage source respectively.By the above-mentioned means, quick-charging circuit disclosed in the utility model can reduce the charging interval of charger later stage constant-voltage phase.
Description
Technical field
Charger technologies field is the utility model is related to, more particularly to a kind of quick-charging circuit.
Background technology
With the development of technology, increasing electronic apparatus application is in people live, in order to which electron equipment provides
Electricity, can be by the battery installed in electronic equipment come for power electronic equipment.Generally, installed in the electricity of electronic equipment
Pond is all chargeable, can be that the battery in electronic equipment charges by charger.
Generally, traditional charger is all first constant-current charge in for battery charging process, after again constant pressure fill
Electricity, however, because inside battery has impedance, within constant-voltage charge this period in later stage, when battery is close to saturation, it charges
Electric current it is less and less, cause the charging interval to draw long.
Utility model content
The utility model mainly solving the technical problems that provide a kind of quick-charging circuit, can quick charge, reduce
Charging interval of charger later stage constant-voltage phase.
In order to solve the above technical problems, the technical scheme that the utility model uses is：A kind of quick charge electricity is provided
Road, including：Charging end, including the first charging end and the second charging end, wherein being used between the first charging end and the second charging end
Battery is connected, thinks that battery charges；First resistor, its one end are connected with the second charging end；Second resistance, its one end and the first electricity
One end connection of resistance, other end ground connection；The other end connection of the first transistor, its first pin and first resistor, its 3rd pipe
Pin and the other end of second resistance connect；3rd resistor, its one end ground connection；One end of 4th resistance, its one end and 3rd resistor
Connection, the other end are connected with the first charging end；Second transistor, its first pin pass through the 5th resistance and the first transistor
Two pins are connected, and its second pin is connected by the 6th resistance eutral grounding, its three-prong with one end of the 4th resistance；Voltage-stabiliser tube,
Its first pin is connected with one end of the 4th resistance, its second pin ground connection；The of photoelectrical coupler, its first end and voltage-stabiliser tube
Three-prong is connected, and the second end is connected by the 7th resistance with the first charging end, and the 3rd end of photoelectrical coupler and the 4th end point
It is not connected with voltage source, during make it that the first end of photoelectrical coupler and the second end turn on, the 3rd end of photoelectrical coupler and the
Four ends turn on.
Wherein, in addition to electrochemical capacitor, the wherein positive terminal of electrochemical capacitor are connected with the first charging end, and electrochemical capacitor is born
Extremely it is connected with the second charging end.
Wherein, the first transistor is NPN type triode, and the first pin of the first transistor is the base stage of NPN type triode,
Second pin of the first transistor is the colelctor electrode of NPN type triode, and the three-prong of the first transistor is NPN type triode
Emitter stage.
Wherein, second transistor is PNP type triode, and the first pin of second transistor is the base stage of PNP type triode,
Second pin of second transistor is the colelctor electrode of PNP type triode, and the three-prong of second transistor is PNP type triode
Emitter stage.
The beneficial effects of the utility model are：The situation of prior art is different from, it is disclosed in the utility model quickly to fill
Circuit, including：Charging end, including the first charging end and the second charging end, wherein between the first charging end and the second charging end
For connecting battery, think that battery charges；First resistor, its one end are connected with the second charging end；Second resistance, its one end and the
One end connection of one resistance, other end ground connection；The other end connection of the first transistor, its first pin and first resistor, it the
Three-prong and the other end of second resistance connect；3rd resistor, its one end ground connection；4th resistance, its one end and 3rd resistor
One end is connected, and the other end is connected with the first charging end；Second transistor, its first pin pass through the 5th resistance and the first transistor
The connection of the second pin, its second pin is connected by the 6th resistance eutral grounding, its three-prong with one end of the 4th resistance；Voltage stabilizing
Pipe, its first pin are connected with one end of the 4th resistance, its second pin ground connection；Photoelectrical coupler, its first end and voltage-stabiliser tube
Three-prong connection, the second end is connected by the 7th resistance with the first charging end, and the 3rd end of photoelectrical coupler and the 4th
End be connected respectively with voltage source, with cause the first end of photoelectrical coupler and the second end conducting when, the 3rd end of photoelectrical coupler
Turned on the 4th end.By the above-mentioned means, quick-charging circuit disclosed in the utility model quickly can charge for battery, subtract
The charging interval of charger later stage constant-voltage phase is lacked.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model quick-charging circuit.
Embodiment
The utility model is described in detail with embodiment below in conjunction with the accompanying drawings.
Such as Fig. 1, Fig. 1 is the structural representation of the utility model quick-charging circuit.The quick-charging circuit includes charging
End, first resistor R1, second resistance R2, the first transistor T1,3rd resistor R3, the 4th resistance R4, second transistor T2, voltage stabilizing
Pipe D and photoelectrical coupler IC.
Charging end includes the first charging end A and the second charging end B, wherein being used between the first charging end A and the second charging end B
In connection battery C1, think that battery C1 charges.
First resistor R1 one end is connected with the second charging end B.
Second resistance R2 one end is connected with first resistor R1 one end, second resistance R2 other end ground connection.In this reality
Apply in example, second resistance R2 resistance is smaller, it is preferred that second resistance R2 resistance value is 100 milliohms.
The first transistor T1 the first pin is connected with the first resistor R1 other end, the first transistor T1 three-prong
It is connected with the second resistance R2 other end.
3rd resistor R3 one end ground connection.
4th resistance R4 one end is connected with 3rd resistor R3 one end, the 4th resistance R4 other end and the first charging end
A connections.
Second transistor T2 the first pin is connected by the 5th resistance R5 with the first transistor T1 the second pin, and second
Transistor T2 the second pin is grounded by the 6th resistance R6, second transistor T2 three-prong and the 4th resistance R4 one end
Connection.
In the present embodiment, the first transistor T1 is NPN type triode, and the first transistor T1 the first pin is NPN type
The base stage of triode, the first transistor T1 the second pin are the colelctor electrode of NPN type triode, and the 3rd of the first transistor T1 manages
Pin is the emitter stage of NPN type triode.
Further, second transistor T2 is PNP type triode, and second transistor T2 the first pin is the pole of positive-negative-positive three
The base stage of pipe, second transistor T2 the second pin are the colelctor electrode of PNP type triode, and second transistor T2 three-prong is
The emitter stage of PNP type triode.
Voltage-stabiliser tube D the first pin is connected with the 4th resistance R4 one end, voltage-stabiliser tube D the second pin ground connection, voltage-stabiliser tube D
Three-prong be connected with photoelectrical coupler IC.In the present embodiment, voltage-stabiliser tube D the first pin and the voltage difference of three-prong
During more than preset value, voltage-stabiliser tube D the first pin and the conducting of the second pin.Specifically, preset value is 2.5V (volt).Ying Li
Solution, when voltage-stabiliser tube D the first pin and the voltage difference of three-prong are less than preset value, voltage-stabiliser tube D the first pin and the 3rd
The voltage difference of pin remains preset value.It should be understood that in certain embodiments, voltage-stabiliser tube D is TL431 (controllable accurate voltage stabilizings
Source), its reference voltage is 2.5V.
Photoelectrical coupler IC first end is connected with voltage-stabiliser tube D three-prong, and photoelectrical coupler IC the second end passes through
7th resistance R7 is connected with the first charging end A, and photoelectrical coupler IC the 3rd end and the 4th end are connected with voltage source respectively, i.e.,
Photoelectrical coupler IC three-terminal link the second voltage source VCC2, photoelectrical coupler IC the 4th end connection first voltage source
VCC1.In the present embodiment, when photoelectrical coupler IC first end and the second end turn on, photoelectrical coupler IC the 3rd end and
4th end turns on.
In the present embodiment, the quick-charging circuit also includes electrochemical capacitor C2, wherein electrochemical capacitor C2 positive terminal with
First charging end A connections, electrochemical capacitor C2 negative pole end are connected with the second charging end B.
The embodiment of the present embodiment, battery C1 internal resistance are equivalent to Rf, when charger is in constant-current charge, because
Charging current I is larger, when I*R2 is more than 0.7V, the first transistor T1 conductings, second transistor T2 conductings, due to 3rd resistor R3
The 6th resistance R6 of parallel connection, the reference voltage of voltage-stabiliser tube is 2.5V；In charging process, cell voltage slowly uprises, and works as cell voltage
When reaching the ceiling voltage of charger output, charger output voltage U01={ R4/ (R3//R6)+1 } * 2.5V=C1+I*Rf+*
I*R2, wherein R3//R6 are R3 and R6 resistances arranged side by side；After reaching charger output ceiling voltage, charger current starts to subtract
It is small, as I*Rf ＜ 0.7V, the first transistor T1 cut-offs, second transistor T2 cut-offs, charger output voltage U02={ (R4/
R6)+1 } * 2.5V=C1, (charging current I is smaller, and I*Rf+I*R2 ignores), battery charge into constant voltage mode；It is public above
Formula can calculate U01 ＞ U02, adjust the 6th resistance R6 resistance, make U01-U02 ≈ I*Rf+I*R2, charged in constant-current phase
Cell voltage is charged to U02 (battery fill full after voltage) by device voltage, so during into constant-voltage phase, output voltage U0=
U02, so as to reduce the low current charge time of constant-voltage phase, greatly reduce the time for haveing suffered charging process.
To sum up, quick-charging circuit disclosed in the utility model, including：Charging end, including the first charging end and second
Charging end, wherein being used to connect battery between the first charging end and the second charging end, think that battery charges；First resistor, one
End is connected with the second charging end；One end connection of second resistance, its one end and first resistor, other end ground connection；The first transistor,
Its first pin and the other end of first resistor connect, and the other end of its three-prong and second resistance connects；3rd resistor, its
One end is grounded；One end connection of 4th resistance, its one end and 3rd resistor, the other end are connected with the first charging end；Second crystal
Pipe, its first pin are connected by the second pin of the 5th resistance and the first transistor, and its second pin is connect by the 6th resistance
Ground, its three-prong are connected with one end of the 4th resistance；Voltage-stabiliser tube, its first pin are connected with one end of the 4th resistance, and it
Two pins are grounded；The three-prong connection of photoelectrical coupler, its first end and voltage-stabiliser tube, the second end passes through the 7th resistance and first
Charging end is connected, and the 3rd end of photoelectrical coupler and the 4th end are connected with voltage source respectively, to cause the of photoelectrical coupler
When one end and the second end turn on, the 3rd end of photoelectrical coupler and the conducting of the 4th end.By the above-mentioned means, the utility model institute is public
The quick-charging circuit opened quickly can charge for battery, reduce the charging interval of charger later stage constant-voltage phase.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical areas, similarly it is included in scope of patent protection of the present utility model.
Claims (4)
- A kind of 1. quick-charging circuit, it is characterised in that including：Charging end, including the first charging end and the second charging end, wherein between first charging end and second charging end For connecting battery, the battery charging is thought；First resistor, its one end are connected with second charging end；Second resistance, its one end are connected with one end of the first resistor, other end ground connection；The first transistor, its first pin are connected with the other end of the first resistor, its three-prong and the second resistance The other end connection；3rd resistor, its one end ground connection；4th resistance, its one end are connected with one end of the 3rd resistor, and the other end is connected with first charging end；Second transistor, its first pin are connected by the 5th resistance with the second pin of the first transistor, its second pipe Pin is connected by the 6th resistance eutral grounding, its three-prong with one end of the 4th resistance；Voltage-stabiliser tube, its first pin are connected with one end of the 4th resistance, its second pin ground connection；Photoelectrical coupler, its first end are connected with the three-prong of the voltage-stabiliser tube, and the second end passes through the 7th resistance and described the One charging end is connected, and the 3rd end of the photoelectrical coupler and the 4th end are connected with voltage source respectively, to cause the photoelectricity When the first end of coupler and the second end turn on, the 3rd end of the photoelectrical coupler and the conducting of the 4th end.
- 2. quick-charging circuit according to claim 1, it is characterised in that also including electrochemical capacitor, wherein the electrolysis The positive terminal of electric capacity is connected with first charging end, and the negative pole end of the electrochemical capacitor is connected with second charging end.
- 3. quick-charging circuit according to claim 1, it is characterised in that the first transistor is NPN type triode, First pin of the first transistor is the base stage of the NPN type triode, and the second pin of the first transistor is institute The colelctor electrode of NPN type triode is stated, the three-prong of the first transistor is the emitter stage of the NPN type triode.
- 4. quick-charging circuit according to claim 3, it is characterised in that the second transistor is PNP type triode, First pin of the second transistor is the base stage of the PNP type triode, and the second pin of the second transistor is institute The colelctor electrode of PNP type triode is stated, the three-prong of the second transistor is the emitter stage of the PNP type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721052206.4U CN207200327U (en) | 2017-08-21 | 2017-08-21 | A kind of quick-charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721052206.4U CN207200327U (en) | 2017-08-21 | 2017-08-21 | A kind of quick-charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207200327U true CN207200327U (en) | 2018-04-06 |
Family
ID=61794653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721052206.4U Expired - Fee Related CN207200327U (en) | 2017-08-21 | 2017-08-21 | A kind of quick-charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207200327U (en) |
-
2017
- 2017-08-21 CN CN201721052206.4U patent/CN207200327U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |