CN108206549A - Multi-charger parallel connection logic control system - Google Patents
Multi-charger parallel connection logic control system Download PDFInfo
- Publication number
- CN108206549A CN108206549A CN201611165355.1A CN201611165355A CN108206549A CN 108206549 A CN108206549 A CN 108206549A CN 201611165355 A CN201611165355 A CN 201611165355A CN 108206549 A CN108206549 A CN 108206549A
- Authority
- CN
- China
- Prior art keywords
- charger
- resistance
- control system
- battery
- logic control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
It is fully charged and while not connecing battery automatically shuts down charger output for lithium battery the present invention provides a kind of multi-charger parallel connection logic control system；This system judges the charged state of battery, then the break-make by turning off system control charger output by detecting the battery-charge signal of charger；This system automatically shuts down the mode of charger output to realize defencive function, greatly enhances the safety of charger and lithium battery Acceptable life by identifying charger charged state.
Description
Technical field
The present invention relates to battery charger field, more particularly to a kind of lithium battery charger protection circuit.
Background technology
Recently as the quick increase of portable electronic production device, the demand to lithium battery is also increasing, while right
The demand of lithium battery charger is also increasing.At present, most lithium battery carried charging protection function in the market, therefore
Most lithium battery charger is all without charging protection function excessively；But it since lithium battery product is various in the market, overcharges protection and overcharges work(
Energy quality differs so that the safety of lithium battery and service life can not be guaranteed.The also relatively advanced battery in part fills
Electric appliance can carry charging protection function, but be typically all to be integrated with monolithic processor controlled mode and other defencive functions.
Invention content
It is an object of the invention to be carried by providing a kind of charger overcharge protection circuit to solve lithium battery product
The situation that charging protection function quality differs.
The present invention is in order to solve the above technical problems, the present invention provides invent a kind of multi-charger parallel connection logic control system
System, including delay circuit 101 and breaking circuit 102；
The delay circuit 101, it is interior for a period of time when being powered on for charger no matter whether charger connects battery and can also hold
Normal output；
The breaking circuit 102, for battery charger charging signals after reception when charging signals show that battery is full of or not
During charging, shutdown charger output.
As the preferred embodiment of patent of the present invention, the delay circuit includes charge-discharge circuit and reference circuit, institute
The charge-discharge circuit stated includes：First capacitance, the second capacitance, first resistor, second resistance, 3rd resistor, the 4th resistance, first
Triode, the second triode, first comparator；
First capacitance is connected with second capacitance, and non-series connection end connects the first power end and the first power supply respectively
Ground, series connection end pass through first resistor connection first transistor base and the first comparator reverse phase
End, by the second resistance to the first power end, emitter passes through described described its collector of the first triode
3rd resistor is to the first power supply；
The first comparator output terminal connects second transistor base by the 4th resistance, and the described the 2nd 3
Its collector of pole pipe is connected with the first comparator reverse side, and emitter meets GND.
As another preferred embodiment of patent of the present invention, the breaking circuit（102）Including：First optocoupler, first
Diode, the second diode, third transistor, the 4th triode, the 5th resistance, the 8th resistance, the 9th resistance, the first relay
Device；
First optocoupler, light emitting diode anode are exported by the 5th resistance to the first comparator
End, with connecing the first power supply, the collector connection battery-charge signal, transmitting connects the one or two to light emitting diode cathode
Pole pipe anode；First diode cathode by the 8th resistance to the third transistor base stage, it is described
Third transistor collector is connected with the 4th transistor base through the 8th resistance to first relay
Device control terminal and second diode cathode, the 4th transistor collector and second diode cathode and institute
Another control terminal of the first relay stated is connected, and the third transistor emitter and the 4th transistor emitter connect
Second source.
Present invention has the advantages that by detecting battery charger charging signals, do not charge in charger or battery is fully charged
Charger is exported afterwards and is turned off, is overcharged so as to effectively prevent lithium battery charging.
Description of the drawings
Attached drawing 1 is the principle of the present invention block diagram.Specific embodiment
The present invention is further described with reference to Fig. 1；
The reference circuit of delay circuit is made of in Fig. 2 the 6th resistance R6, the 7th resistance R7, is connected by R6 and R7, then distinguish
With connecing the first power end VCC1 and the first power supply GND1 generates a reference voltage to first comparator at R6 and R7 series connection
U1A in-phase ends.
By the first capacitance C1, the second capacitance C2, first resistor R1, second resistance R2,3rd resistor R3, the 4th electricity in Fig. 2
The charge-discharge circuit of R4, the first triode Q1, the second triode Q2, first comparator U1A composition delay circuits is hindered, when powering on
VCC1 is charged by C1 to C2, makes to obtain a high level at C1 and C2 series connection, which passes through R1 to Q1 base stages Q1
Conducting, Q1 and R2, R3 of conducting form a partial pressure relationship so that Q1 emitter voltages are slightly below the height electricity at C1 and C2 series connection
It is flat, therefore high level is formed a slow discharge process, while is also made by R1, base stage and emitter, R3 to the GND1 of Q1
The voltage for obtaining Q1 base stages obtains a process slowly declined, and when Q1 base voltages are decreased below U1A in-phase ends, U1A is defeated
Outlet exports high level by R4 to Q2 base stages, and Q2 is connected, the voltage of Q1 base stages is then pulled to rapidly 0V, which prevent
Q1 base stages are discharged to reference voltage（That is U1A in-phase ends voltage）U1A output terminals are anti-between high level and low level during critical point
Complex wave moves；Terminate to this delay circuit.
During delay circuit is delayed, the light emitting diode of the first optocoupler PC1 is constantly in off state, therefore the collection of PC1
Electrode is also constantly in off state with emitter so that battery-charge signal can not pass through, and relay is caused to be constantly in and is led
Logical state；
At the end of delay, PC1 LEDs ONs, PC1 collectors are connected with emitter, battery-charge signal（Battery fills
Electric signal can use power supply and refer to modulating signal, and when charger is in non-charged state, non-charging indicator light is lighted, and therefrom obtain one
High level is as the non-charging status signal of battery）8th resistance R8 is reached by PC1；When battery-charge signal is high level（I.e.
For non-charged state）When, high level causes Q3 to be connected by R8, and the 4th triode Q4 base voltages is then made to be pulled to low level
Turn off Q4, therefore the first relay K1 is turned off, therefore charger Non voltage output；Conversely, when battery-charge signal is low electricity
It is flat（I.e. charger is charged state）When, K1 conductings, charger normally exports.
The present invention provides a kind of turning off system for lithium battery charger, special suitable for various lithium battery chargers
It is not that stringenter occasion is required to protection service life of lithium battery and needs to automatically shut down charger output in non-charged state
Occasion.
Claims (6)
1. a kind of multi-charger parallel connection logic control system, it is characterised in that：Including delay circuit（101）And breaking circuit
（102）；
The delay circuit（101）, it is interior for a period of time when being powered on for charger no matter whether charger connects battery and also can
Hold normal output；
The breaking circuit（102）, for receiving battery charger charging signals, when charger does not charge or charging signals
When display battery is full of, shutdown charger output.
2. multi-charger parallel connection logic control system as described in claim 1, it is characterised in that：The delay circuit includes
Charge-discharge circuit and reference circuit.
3. multi-charger parallel connection logic control system as claimed in claim 2, it is characterised in that：The charge-discharge circuit packet
It includes：First capacitance, the second capacitance, first resistor, second resistance, 3rd resistor, the 4th resistance, the first triode, the two or three pole
Pipe, first comparator.
4. multi-charger parallel connection logic control system as claimed in claim 3, it is characterised in that：First capacitance and institute
State the series connection of the second capacitance, with connecting the first power end and the first power supply respectively, series connection end passes through described the at non-series connection end
One resistance connection, first transistor base and the first comparator reverse side, described its current collection of first triode
Pole by the second resistance to the first power end, emitter by the 3rd resistor to the first power supply.
5. multi-charger parallel connection logic control system as claimed in claim 3, it is characterised in that：The first comparator is defeated
Outlet connects second transistor base, described its collector of the second triode and described first by the 4th resistance
Comparator reverse side is connected, and emitter meets GND.
6. multi-charger parallel connection logic control system as described in claim 1, it is characterised in that：The breaking circuit
（102）Including：First optocoupler, the first diode, the second diode, third transistor, the 4th triode, the 5th resistance, the 8th
Resistance, the 9th resistance, the first relay；
First optocoupler, light emitting diode anode are exported by the 5th resistance to the first comparator
End, with connecing the first power supply, the collector connection battery-charge signal, transmitting connects the one or two to light emitting diode cathode
Pole pipe anode；First diode cathode by the 8th resistance to the third transistor base stage, it is described
Third transistor collector is connected with the 4th transistor base through the 8th resistance to first relay
Device control terminal and second diode cathode, the 4th transistor collector and second diode cathode and institute
Another control terminal of the first relay stated is connected, and the third transistor emitter and the 4th transistor emitter connect
Second source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611165355.1A CN108206549A (en) | 2016-12-16 | 2016-12-16 | Multi-charger parallel connection logic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611165355.1A CN108206549A (en) | 2016-12-16 | 2016-12-16 | Multi-charger parallel connection logic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108206549A true CN108206549A (en) | 2018-06-26 |
Family
ID=62602069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611165355.1A Withdrawn CN108206549A (en) | 2016-12-16 | 2016-12-16 | Multi-charger parallel connection logic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108206549A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274159A (en) * | 2018-11-23 | 2019-01-25 | 苏州蓝石新动力有限公司 | A kind of charging system |
-
2016
- 2016-12-16 CN CN201611165355.1A patent/CN108206549A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274159A (en) * | 2018-11-23 | 2019-01-25 | 苏州蓝石新动力有限公司 | A kind of charging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180626 |
|
| WW01 | Invention patent application withdrawn after publication |