CN108512274A - A kind of battery charger adaptive circuit - Google Patents
A kind of battery charger adaptive circuit Download PDFInfo
- Publication number
- CN108512274A CN108512274A CN201810358387.6A CN201810358387A CN108512274A CN 108512274 A CN108512274 A CN 108512274A CN 201810358387 A CN201810358387 A CN 201810358387A CN 108512274 A CN108512274 A CN 108512274A
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- battery
- output
- resistance
- circuit
- charger
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims description 29
- 230000005611 electricity Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
-
- 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
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
Abstract
The invention discloses a kind of battery charger adaptive circuits, including：Reverse-connection preventing circuit, battery polar automatic match circuit and time-delay reset control circuit, reverse-connection preventing circuit is for when preventing battery from accessing, the positive-negative polarity of battery output and the output positive-negative polarity of battery charger to mismatch caused electric current and pour in down a chimney；Battery polar automatic match circuit is used to detect the polarity of cell output voltage, and the positive-negative polarity of battery output is matched with the output positive-negative polarity of battery charger；Time-delay reset control circuit stops the charge function of charger, and detect the access state of battery for being resetted before accessing battery so that controls charger again after battery accesses delay preset duration and starts to work, starts charge function；The polarity of energy Auto-matching battery and battery charger of the invention so that it is easy to maintain not error-prone, and circuit is simple, and it is at low cost, it is easily designed.
Description
Technical field
The present invention relates to battery charger more particularly to the adaptive guards of battery charger.
Background technology
Operating personnel, it is lack of standardization because operating when equipment is installed, it is easy to by the positive and negative of battery charger and battery
Reverse polarity connection will damage battery charger and battery, or even damage is entirely once the polarity of battery and battery charger are reversed
System.
Battery in system could be safeguarded when safeguarding after needing closing system, particularly, special for base station etc.
Application system occasion, once the system of closing, will certainly influence user experience, bring a large amount of customer complaint, therefore, operating personnel are usual
Battery is safeguarded in shutdown at dead of night for selection, highly inconvenient in this way, and is easy to reversed battery, brings prodigious security risk.
The prior art has damages battery charger and battery after battery pack series diode prevents reversal connection, also has and passes through use
Relay is next anti-reverse, once as shown in Figure 1, battery reversal connection, relay can not be attracted, system will be unable to work normally, and connect
It is counter to be not easy to be found, secondary maintenance is needed, manual maintenance cost is big, and in existing all schemes, all cannot achieve online dimension
Shield replaces battery, and use is highly inconvenient.
Therefore, it is necessary to be improved to the prior art.
Invention content
In view of this, in order to solve the above technical problem, the present invention provides a kind of battery charger adaptive circuit, with solution
Certainly existing scheme is unable to on-line maintenance and replaces the problem that battery plus-negative plate is reversed in battery and batter-charghing system.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of battery charger adaptive circuit, including：Reverse-connection preventing circuit, battery polar automatic match circuit and delay
Reset control circuit；
Reverse-connection preventing circuit is for when preventing battery from accessing, the output of the positive-negative polarity and battery charger of battery output to be positive and negative
Electric current pours in down a chimney caused by polarity mismatches；
Battery polar automatic match circuit is used to detect the polarity of cell output voltage, and makes the positive and negative anodes of battery output
Property is matched with the output positive-negative polarity of battery charger；
Time-delay reset control circuit stops the charge function of charger, and detect battery for being resetted before accessing battery
Access state so that battery access delay preset duration after control again charger start to work, start charge function.
Preferably, reverse-connection preventing circuit includes a diode, and diode is connected to battery polar automatic match circuit and electricity
In circuit between electrolytic battery charger, the electric current that the output of battery charger is just being flowed out is flowed into from the anode of diode, from diode
Cathode outflow.
Preferably, battery polar automatic match circuit includes a dpdt relay switch K1 and battery plus-negative plate
Detect control circuit；The upper normally closed stationary contact connection dpdt relay switch K1's of dpdt relay switch K1 is lower normal
It opens the one end for being used to export with battery after stationary contact to connect, the upper normally opened stationary contact of dpdt relay switch K1 connects double-pole
The other end under double-throw relay switch K1 after normally closed stationary contact for being exported with battery is connect, dpdt relay switch
The upper movable contact of K1 is for being connected between battery charger anode and the upper normally closed stationary contact of dpdt relay switch K1
Circuit in, the lower movable contact of dpdt relay switch K1 is for being connected to battery charger cathode and double-pole double throw relay
In circuit under device switch K1 between normally closed stationary contact；Battery plus-negative plate detection control circuit is for detecting battery output electricity
The polarity of pressure controls double-pole when detecting that the positive-negative polarity of battery output and the output positive-negative polarity of battery charger mismatch
The control coil of double-throw relay switch K1 is attracted.
Preferably, battery plus-negative plate detection control circuit includes diode D1, diode D2 and resistance R1, diode D2
Anode be used to connect one end of battery output, the anode of diode D1 is used to connect the other end of battery output, diode D1
Cathode be connected with the cathode of diode D2 after resistance R1.
Preferably, time-delay reset control circuit includes：Rectifier bridge DB1, capacitance C1, button K2, resistance R4, resistance R5, electricity
Hinder R6, metal-oxide-semiconductor Q1 and optocoupler OC1；One end of rectifier bridge DB1 exchange inputs is used to connect one end of battery output, rectifier bridge
The other end of DB1 exchange inputs is used to connect the other end of battery output, is connected to after the decent resistance R4 of output of rectifier bridge DB1
The diode anode of optocoupler OC1, the output of rectifier bridge DB1 is negative to be connected after the drain electrode of the source electrode of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q1 successively
To the diode cathode of optocoupler OC1, just, the other end of resistance R5 is through capacitance for the output of one end connection rectifier bridge DB1 of resistance R5
The source electrode of metal-oxide-semiconductor Q1 is connected to after C1, resistance R6 is in parallel with capacitance C1, and capacitance C1 is in parallel with button K2, and the grid of metal-oxide-semiconductor Q1 connects
The other end of connecting resistance R5, the transistor collector of optocoupler OC1 and the transistor emitter output control signal of optocoupler OC1 are used for
Whether control battery charger works.
Preferably, time-delay reset control circuit includes：Rectifier bridge DB1, capacitance C1, button K2, resistance R4, resistance R5, electricity
Hinder R6 and metal-oxide-semiconductor Q1；One end of rectifier bridge DB1 exchange inputs is used to connect one end of battery output, rectifier bridge DB1 exchanges
The other end of input is used to connect the other end of battery output, and metal-oxide-semiconductor Q1 is connected to after the decent resistance R4 of output of rectifier bridge DB1
Drain electrode, the negative source electrode for being connected to metal-oxide-semiconductor Q1 of output of rectifier bridge DB1, the output of one end connection rectifier bridge DB1 of resistance R5
Just, the other end of resistance R5 is connected to the source electrode of metal-oxide-semiconductor Q1 after capacitance C1, and resistance R6 is in parallel with capacitance C1, capacitance C1 with press
Key K2 is in parallel, the other end of the grid connection resistance R5 of metal-oxide-semiconductor Q1, and the drain electrode of metal-oxide-semiconductor Q1 and source electrode output control signal are used for
Whether control battery charger works.
Compared with prior art, the present invention has the advantages that：
1) this programme may be implemented in wire type and safeguard replacement battery, without the system of closing；
2) this programme can Auto-matching battery and battery charger polarity so that it is easy to maintain not malfunction；
3) circuit of the present invention is simple, at low cost, easily designed.
Description of the drawings
Fig. 1 is existing battery charging reverse connection prevention protection circuit schematic diagram；
Fig. 2 is the schematic block circuit diagram of the embodiment of the present invention one；
Fig. 3 is one specific circuit diagram of the embodiment of the present invention；
Fig. 4 is the circuit diagram of the embodiment of the present invention two；
Fig. 5 is the circuit diagram of the embodiment of the present invention three；
Fig. 6 is the circuit diagram of the embodiment of the present invention four.
First embodiment
Fig. 2 shows first embodiment of the invention functional block diagram, battery charger adaptive circuit includes：Anti-reverse electricity
Road, battery polar automatic match circuit and time-delay reset control circuit；
Reverse-connection preventing circuit is diode D3, the anode of the anode connection battery charger of diode D3；
Battery polar automatic match circuit includes a dpdt relay switch K1 and battery plus-negative plate detection control
Circuit processed, battery plus-negative plate detects the output end of the input terminal connection battery of control circuit, for detecting cell output voltage
Polarity；Battery plus-negative plate detects the control coil of the output end connection dpdt relay switch K1 of control circuit；
The output of the input terminal connection battery of time-delay reset control circuit stops charging for being resetted before accessing battery
The charge function of device, and battery access state is detected, the output end of time-delay reset control circuit connects charger, for the control that is delayed
Charger processed enters charged state；
The cathode of the upper movable contact connection diode D3 of dpdt relay switch K1, dpdt relay switch K1
Lower movable contact connection battery charger output negative pole；The upper normally closed stationary contact of dpdt relay switch K1 connects double-pole
One end of battery output is connected under double-throw relay switch K1 after normally opened stationary contact, dpdt relay switch K1's
The other end of battery output is connected under upper normally opened stationary contact connection dpdt relay switch K1 after normally closed stationary contact.
The operation principle of the present embodiment is：
When battery accesses, battery plus-negative plate detects output control letter after polarity of the control circuit by detecting battery
Number, the attracting state of control dpdt relay switch K1 is used for the positive-negative polarity of match battery；When system is in online dimension
When shield replaces battery, primary battery is first removed, stops the charge function of charger by the effect of time-delay reset control circuit, refills
Upper new battery, time-delay reset control circuit control charger start-up operation, start again after battery access after the preset duration that is delayed
Charge function.
The present invention due to above-mentioned delay control circuit and reverse-connection preventing circuit presence, and battery access moment, electricity
The output of electrolytic battery charger is not electric, and also there is no electric currents to pour in down a chimney, therefore may be implemented in wire type and safeguard battery.
Fig. 3 shows the specific circuit diagram of first embodiment of the invention.
Battery plus-negative plate detects control circuit：Diode D1, resistance R1 and diode D2.
Time-delay reset control circuit includes：Rectifier bridge DB1, capacitance C1, button K2, resistance R4, resistance R5, resistance R6, MOS
Pipe Q1, optocoupler OC1.
The friendship of one end of control coil, the anode of diode D2, rectifier bridge DB1 of the first dpdt relay switch K1
Stream input one end is connected；The other end of exchange input, the anode of diode D1 of rectifier bridge DB1 is connected, the cathode of diode D1
Connect one end of resistance R1, the other end and two of the control coil of the other end connection dpdt relay switch K1 of resistance R1
The cathode of pole pipe D2；The output of rectifier bridge DB1 is just connected with one end of resistance R4 and resistance R5 simultaneously, the other end of resistance R4
It is connected with the anode of the light emitting diode inside optocoupler OC1, the cathode of the light emitting diode inside optocoupler OC1 is connected to metal-oxide-semiconductor
The drain electrode of Q1, the other end of resistance R5 are connected with one end of resistance R6 and capacitance C1 simultaneously, the other end of resistance R5 also with MOS
The grid of pipe Q1 and one end of button K2 are connected, the source electrode of metal-oxide-semiconductor Q1 simultaneously with resistance R6, capacitance C1, button K2 it is another
The output negative of end and rectifier bridge DB1 connect；The collector and emitter of phototriode inside optocoupler OC1 is connected to battery
Thus charger controls whether charger charges.
The operation principle of above-mentioned reverse-connection preventing circuit is as follows：
When one end of battery output is that just, when the other end of battery output is negative, diode D3, can be effective because of reverse-biased cut-off
Electric current is avoided to pour in down a chimney, i.e., electric current can not flow to battery charger from battery.
The operation principle of above-mentioned battery plus-negative plate detection control circuit is as follows：
When one end of battery output is that just, the other end of battery output is positive-negative polarity and the electricity of battery charger when bearing
The positive-negative polarity in pond matches, and diode D1 is because of reverse-biased cut-off, the control coil no current of dpdt relay switch K1, double-pole
Double-throw relay switch K1 attonitys；When one end of battery output is negative, the other end of battery output is timing, battery charger
Positive-negative polarity and battery positive-negative polarity mismatch, diode D1 because positively biased be connected, the control of dpdt relay switch K1
There are the electric current, current flow path to be in coil processed：Battery output the other end → diode D1 → resistance R1 → double-pole double throw after
One end of the control coil of electric switch K1 → battery output, dpdt relay switch K1 are attracted, dpdt relay
The upper movable contact of switch K1 is changed to connect with upper normally opened stationary contact, and the lower movable contact of dpdt relay switch K1 is changed to under
Normally opened stationary contact is connected, and is matched with the positive-negative polarity of battery to realize the positive-negative polarity of battery charger.
The operation principle of above-mentioned time-delay reset control circuit is as follows：
When replacing battery online, after removing primary battery, by being manually pressed by button K2, the energy of capacitance C1 is discharged
Fall, the gate source voltage of metal-oxide-semiconductor Q1 is zero, metal-oxide-semiconductor Q1 shutdowns and the charging work(by controlling optocoupler OC1 stopping chargers
Can, after allowing the charge function of charger to stop, then access new battery；
When battery is in access state, through resistance R5 to delay capacitor after the rectified bridge BD1 rectifications of cell output voltage
C1 charges, and when the voltage of delay capacitor C1 is charged to the cut-in voltage of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q1 is just connected, to realize
The charge function that optocoupler OC1 conductings start charger is controlled again after metal-oxide-semiconductor Q1 delay preset duration conductings, and preset duration can lead to
The size of the size and/or capacitance C1 capacitances that adjust resistance R1 resistance values is crossed to set.
Second embodiment
The position of third diode D3 in Fig. 3 is connected to the output negative pole and the first dpdt relay of charger
It is second embodiment between the lower movable contact of switch K1, as shown in Figure 4.
After adjustment the operation principle of circuit as first embodiment, it can be achieved that equivalent efficacy, this will not be repeated here.
3rd embodiment
The first isolation optocoupler OC1 in Fig. 3 is removed, is directly connected to and is filled with source electrode by the drain electrode of the first metal-oxide-semiconductor Q1
Electric appliance is controlled as 3rd embodiment, as shown in Figure 5.
The operation principle with first embodiment of circuit are essentially the same after adjustment, only control the control that charger is started to work
Signal does not carry out isolation processing, and this will not be repeated here.
Fourth embodiment
The position of third diode D3 in Fig. 5 is connected to the output negative pole and the first dpdt relay of charger
It is fourth embodiment between the lower movable contact of switch K1, as shown in Figure 6.
After adjustment the operation principle of circuit as 3rd embodiment, it can be achieved that equivalent efficacy, this will not be repeated here.
The implementation of the present invention is not limited to this, and the above according to the invention is known using the ordinary skill of this field
Know and customary means, under the premise of not departing from above-mentioned basic fundamental thought of the invention, specific implementation circuit can be in the present invention
The modification, replacement or change for making other diversified forms, all fall within rights protection scope of the present invention.
Claims (6)
1. a kind of battery charger adaptive circuit, it is characterised in that：Including：Reverse-connection preventing circuit, battery polar Auto-matching electricity
Road and time-delay reset control circuit；
When reverse-connection preventing circuit is used to prevent battery from accessing, the output positive-negative polarity of the positive-negative polarity and battery charger of battery output
Electric current pours in down a chimney caused by mismatching；
Battery polar automatic match circuit is used to detect the polarity of cell output voltage, and make the positive-negative polarity of battery output with
The output positive-negative polarity of battery charger matches；
Time-delay reset control circuit stops the charge function of charger, and detect connecing for battery for being resetted before accessing battery
Enter state so that control charger again after battery accesses delay preset duration and start to work, start charge function.
2. battery charger adaptive circuit according to claim 1, it is characterised in that：Reverse-connection preventing circuit includes one two
Pole pipe, diode are connected in the circuit between battery polar automatic match circuit and battery charger, battery charger it is defeated
Go out the electric current just flowed out to flow into from the anode of diode, be flowed out from the cathode of diode.
3. battery charger adaptive circuit according to claim 1, it is characterised in that：Battery polar automatic match circuit
Control circuit is detected including a dpdt relay switch K1 and battery plus-negative plate；Dpdt relay switch K1's
One end under upper normally closed stationary contact connection dpdt relay switch K1 after normally opened stationary contact for being exported with battery is connect,
It is used after normally closed stationary contact under the upper normally opened stationary contact connection dpdt relay switch K1 of dpdt relay switch K1
It is connect in the other end that battery exports, the upper movable contact of dpdt relay switch K1 is for being connected to battery charger just
In circuit between pole and the upper normally closed stationary contact of dpdt relay switch K1, dpdt relay switch K1's is lower dynamic
Contact is for being connected in the circuit under battery charger cathode and dpdt relay switch K1 between normally closed stationary contact；
Battery plus-negative plate detection control circuit is used to detect the polarity of cell output voltage, when the positive-negative polarity for detecting battery output
The control coil of control dpdt relay switch K1 is attracted when being mismatched with the output positive-negative polarity of battery charger.
4. battery charger adaptive circuit according to claim 3, it is characterised in that：Battery plus-negative plate detection control
Circuit includes diode D1, diode D2 and resistance R1, and the anode of diode D2 is used to connect one end of battery output, diode
The anode of D1 is used to connect the other end of battery output, the cathode of diode D1 after resistance R1 with the cathode phase of diode D2
Even.
5. battery charger adaptive circuit according to claim 1, it is characterised in that：Time-delay reset control circuit packet
It includes：Rectifier bridge DB1, capacitance C1, button K2, resistance R4, resistance R5, resistance R6, metal-oxide-semiconductor Q1 and optocoupler OC1；Rectifier bridge DB1
One end of exchange input is used to connect one end of battery output, and the other end of rectifier bridge DB1 exchange inputs is defeated for connecting battery
The other end gone out is connected to the diode anode of optocoupler OC1 after the decent resistance R4 of output of rectifier bridge DB1, and rectifier bridge DB1's is defeated
Go out the diode cathode born and be connected to optocoupler OC1 after the drain electrode of the source electrode of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q1 successively, the one of resistance R5
Just, the other end of resistance R5 is connected to the source electrode of metal-oxide-semiconductor Q1 after capacitance C1 for the output of end connection rectifier bridge DB1, resistance R6 with
Capacitance C1 is in parallel, and capacitance C1 is in parallel with button K2, the other end of the grid connection resistance R5 of metal-oxide-semiconductor Q1, the triode of optocoupler OC1
The transistor emitter of collector and optocoupler OC1 output control signal are for controlling whether battery charger works.
6. battery charger adaptive circuit according to claim 1, it is characterised in that：Time-delay reset control circuit packet
It includes：Rectifier bridge DB1, capacitance C1, button K2, resistance R4, resistance R5, resistance R6 and metal-oxide-semiconductor Q1；Rectifier bridge DB1 exchange inputs
One end be used to connect one end of battery output, the other end of rectifier bridge DB1 exchange input is used to connect the another of battery output
It holds, the drain electrode of metal-oxide-semiconductor Q1 is connected to after the decent resistance R4 of output of rectifier bridge DB1, the output of rectifier bridge DB1 is negative to be connected to MOS
The source electrode of pipe Q1, just, the other end of resistance R5 is connected to after capacitance C1 for the output of one end connection rectifier bridge DB1 of resistance R5
The source electrode of metal-oxide-semiconductor Q1, resistance R6 is in parallel with capacitance C1, and capacitance C1 is in parallel with button K2, the grid connection resistance R5's of metal-oxide-semiconductor Q1
The other end, the drain electrode of metal-oxide-semiconductor Q1 and source electrode output control signal are for controlling whether battery charger works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358387.6A CN108512274A (en) | 2018-04-20 | 2018-04-20 | A kind of battery charger adaptive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358387.6A CN108512274A (en) | 2018-04-20 | 2018-04-20 | A kind of battery charger adaptive circuit |
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| Publication Number | Publication Date |
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| CN108512274A true CN108512274A (en) | 2018-09-07 |
Family
ID=63383073
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810358387.6A Withdrawn CN108512274A (en) | 2018-04-20 | 2018-04-20 | A kind of battery charger adaptive circuit |
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| CN (1) | CN108512274A (en) |
Cited By (2)
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| CN112234688A (en) * | 2020-12-10 | 2021-01-15 | 武汉精能电子技术有限公司 | Anti-reverse-connection circuit for output of charging and discharging equipment and charging and discharging circuit |
| CN113725845A (en) * | 2020-05-25 | 2021-11-30 | 南宁富桂精密工业有限公司 | DC power supply circuit |
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|---|---|---|---|---|
| CN113725845A (en) * | 2020-05-25 | 2021-11-30 | 南宁富桂精密工业有限公司 | DC power supply circuit |
| CN112234688A (en) * | 2020-12-10 | 2021-01-15 | 武汉精能电子技术有限公司 | Anti-reverse-connection circuit for output of charging and discharging equipment and charging and discharging circuit |
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Application publication date: 20180907 |