CN206575190U - A kind of charger automatically powered off - Google Patents
A kind of charger automatically powered off Download PDFInfo
- Publication number
- CN206575190U CN206575190U CN201720261572.4U CN201720261572U CN206575190U CN 206575190 U CN206575190 U CN 206575190U CN 201720261572 U CN201720261572 U CN 201720261572U CN 206575190 U CN206575190 U CN 206575190U
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- resistance
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- circuit
- output end
- decision circuitry
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Abstract
The utility model discloses a kind of charger automatically powered off, including charging circuit, voltage conversion circuit, comparison circuit, zero cross detection circuit, decision circuitry and normally closed relay, the normally closed relay is serially connected between mains electricity input end and charging circuit, the comparison circuit input is connected with battery with voltage conversion circuit respectively, the zero cross detection circuit input is connected with mains electricity input end, the zero cross detection circuit output end is connected with decision circuitry input respectively with the output end of comparison circuit, the decision circuitry output end is connected with normally closed relay input.The utility model by comparison circuit judge battery that charging circuit connected whether charging complete, current zero-crossing signal in circuit is detected by zero cross detection circuit, the utility model is set to disconnect normally closed relay at current zero-crossing point when charging complete finally by decision circuitry, and then the connection of charger and mains electricity input end is disconnected, reduce kwh loss.
Description
Technical field
The utility model is related to electronic circuit field, more specifically to a kind of battery charger electricity automatically powered off
Road.
Background technology
As government is in recent years about energy-saving and emission-reduction, the release successively of Sustainable development policies, the relevant battery of in the market
The product of application is increasingly paid attention to, while also having driven the market of adjacent areas product, such as charger.
Existing charger is substantially all the following function of configuration, battery charging is fast complete when, rechargable battery it is defeated
Going out voltage and output current can reduce, and reduce the heating of battery and charger, can also play the loss for reducing charging circuit.But
Be existing charger after battery charging complete, due to charging can not be disconnected with mains electricity input end, therefore
Even if charger power output is relatively low, charger still can expend many electricity.
Utility model content
In view of the above-mentioned problems, the utility model offer is a kind of can to realize the charger circuit structure automatically powered off.
The solution that the utility model solves its technical problem is：
A kind of charger automatically powered off, including charging circuit, voltage conversion circuit, comparison circuit, zero cross detection circuit,
Decision circuitry and normally closed relay, the normally closed relay are serially connected between mains electricity input end and charging circuit, the comparison
Circuit input end is connected with battery with voltage conversion circuit respectively, the zero cross detection circuit input and mains electricity input end phase
Even, the zero cross detection circuit output end is connected with decision circuitry input respectively with the output end of comparison circuit, described to judge
Circuit output end is connected with normally closed relay input.
As the further improvement of above-mentioned technical proposal, the voltage conversion circuit includes three terminal regulator, three end
Voltage-stablizer model LM7805, connects respectively between the three terminal regulator input and earth terminal, between output end and earth terminal
There is electric capacity.
As the further improvement of above-mentioned technical proposal, the comparison circuit includes comparator, first resistor, the second electricity
Resistance, 3rd resistor and the 4th resistance, the battery, first resistor are connected with second resistance, and the voltage conversion circuit is defeated
Go out end, 3rd resistor and the 4th resistant series, the comparator homophase input is terminated between first resistor and second resistance, institute
State comparator anti-phase input to terminate between 3rd resistor and the 4th resistance, the comparator output terminal and decision circuitry input
It is connected.
As the further improvement of above-mentioned technical proposal, the zero cross detection circuit includes the first diode, the two or two pole
Pipe, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and triode, first diode cathode, the two or two pole
Pipe positive pole is connected with mains electricity input end Live line Zero line respectively, and first diode cathode and the second diode cathode are connected,
Described 5th resistance one end is connected with the first diode cathode, and other end ground connection, the negative pole of second diode passes through series connection
The 6th resistance and the 7th resistance be connected to the ground, the 7th resistor coupled in parallel is described between the base stage and emitter of triode
Three terminal regulator output end is connected by the 8th resistance with transistor collector, the transistor emitter ground connection.
As the further improvement of above-mentioned technical proposal, the decision circuitry include with door arithmetic unit, the comparator is defeated
Go out end and transistor collector is connected with door arithmetic unit input respectively, described and door arithmetic unit output end and normally closed relay
It is connected.
The beneficial effects of the utility model are：The utility model judges the storage that charging circuit is connected by comparison circuit
Battery whether charging complete, by zero cross detection circuit detect circuit in current zero-crossing signal, finally by decision circuitry
Effect enables the utility model to disconnect normally closed relay at current zero-crossing point when charging complete, and then disconnection is filled
Electrical equipment and the connection of mains electricity input end, reduce kwh loss.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model, rather than entirely
Portion's embodiment, those skilled in the art on the premise of not paying creative work, can also obtain it according to these accompanying drawings
His design and accompanying drawing.
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The technique effect of design of the present utility model, concrete structure and generation is carried out below with reference to embodiment and accompanying drawing
Clearly and completely describe, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of embodiment of the present utility model, rather than whole embodiments, based on embodiment of the present utility model, the skill of this area
The other embodiment that art personnel are obtained on the premise of not paying creative work, belongs to the model of the utility model protection
Enclose.In addition, all connection/annexations being previously mentioned in text, not singly refer to component and directly connect, and refer to can be according to specific reality
Situation is applied, by adding or reducing couple auxiliary, to constitute more excellent draw bail.Each technology in the invention is special
Levy, can be with combination of interactions on the premise of not conflicting conflict.
Reference picture 1, for existing charger after battery charging complete due to that can not disconnect and mains electricity input end
Electrically connect and continue to be lost electric energy, the utility model provides one kind and can disconnected in battery charging complete to be connected with mains electricity input end
The charger circuit structure connect, including charging circuit, voltage conversion circuit, comparison circuit, zero cross detection circuit, decision circuitry with
And normally closed relay, the normally closed relay is serially connected between mains electricity input end and charging circuit, the comparison circuit input
It is connected respectively with battery with voltage conversion circuit, the zero cross detection circuit input is connected with mains electricity input end, the mistake
The output end of zero detection circuit output end and comparison circuit is connected with decision circuitry input respectively, the decision circuitry output end
It is connected with normally closed relay input.Specifically, the voltage conversion circuit is used to battery output voltage being converted into necessarily
Voltage powered for charger each circuit module, the comparison circuit be used to detecting battery whether charging complete, it is relatively more electric
Road is the full electric degree that battery is judged according to the output voltage of battery, because accumulator electric-quantity is in positive with voltage
Close, the zero cross detection circuit is used to detect circuital current zero cross signal, and the decision circuitry, which is used to export comparison circuit, to be tied
The result of fruit and zero cross detection circuit output carries out computing, controls the break-make of normally closed relay, the utility model can be in electric power storage
During the charging complete of pond, normally closed relay is disconnected at current zero-crossing point.
It is further used as preferred embodiment, the voltage conversion circuit includes three terminal regulator, the three-terminal voltage-stabilizing
Device model LM7805, electricity is connected between the three terminal regulator input and earth terminal, between output end and earth terminal respectively
Hold, the three terminal regulator, for being another magnitude of voltage by the voltage conversion of input and exporting, is that other circuit modules are powered.
It is further used as preferred embodiment, the comparison circuit includes comparator, first resistor R1, second resistance
R2,3rd resistor R3 and the 4th resistance R4, the battery, first resistor R1 connect with second resistance R2, and the voltage turns
Circuit output end, 3rd resistor R3 is changed to connect with the 4th resistance R4, the comparator homophase input terminate at first resistor R1 with
Between second resistance R2, the comparator anti-phase input is terminated between 3rd resistor R3 and the 4th resistance R4, the comparator
Output end is connected with decision circuitry input.The first resistor R1 and second resistance R2 specifically connected is divided battery
Pressure, samples, the 3rd resistor R3 and the 4th resistance R4 of the series connection are defeated to voltage conversion circuit to battery output voltage
Go out voltage carry out partial pressure as judge battery whether the foundation of charging complete, the 4th resistance R4 is adjustable resistance, is being filled
The 4th resistance R4 resistance can be adjusted according to different batteries when electric, therefore the compatible different electric power storages of the utility model
The electric power detection operation in pond, adjustment comparison circuit judges the parameter of the whether full electricity of battery.When battery charging complete, compare
Device homophase input terminal voltage is higher than anti-phase input terminal voltage, comparator output high level.
It is further used as preferred embodiment, the zero cross detection circuit includes the first diode D1, the second diode
D2, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8 and triode, the first diode D1 is just
Pole, the second diode D2 positive poles are connected with mains electricity input end Live line Zero line respectively, the first diode D1 negative poles and second
Diode D2 negative poles are connected, and described 5th resistance R5 one end is connected with the first diode D1 negative poles, other end ground connection, described second
Diode D2 negative pole is connected to the ground by the 6th resistance R6 of series connection and the 7th resistance R7, and the 7th resistance R7 is connected in parallel on three
Between the base stage and emitter of pole pipe, the three terminal regulator output end is connected by the 8th resistance R8 with transistor collector,
The transistor emitter ground connection.The electricity that specifically the first diode D1 and the second diode D2 are inputted to mains electricity input end
Pressure carries out rectification, and when electric current is higher, the 7th resistance R7 pressure drop is higher, causes triode ON, and transistor collector is drawn
It is low, low level is exported, when circuit drops to zero, the 7th resistance R7 pressure drops are relatively low, cause triode to end, transistor collector is defeated
Go out high level, i.e. electric current at zero crossing, transistor collector can export high level.
It is further used as preferred embodiment, the decision circuitry includes and door arithmetic unit, the comparator output terminal
It is connected respectively with door arithmetic unit input with transistor collector, it is described with door arithmetic unit output end and normally closed relay phase
Even.According to statement above, when battery charging complete, comparator output high level, when circuit is at current zero-crossing point
When, triode output high level is carried out and computing with door controller to the output result of comparator and triode, so only
When battery charging complete and electric current are at zero crossing, high level can be just exported with door controller, normally closed relay is controlled
Device disconnects, and realizes automatic circuit break function of the present utility model.
Better embodiment of the present utility model is illustrated above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make a variety of equivalent changes on the premise of without prejudice to the utility model spirit
Type or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of charger automatically powered off, including charging circuit, it is characterised in that：It is also electric including voltage conversion circuit, comparison
Road, zero cross detection circuit, decision circuitry and normally closed relay, the normally closed relay are serially connected in mains electricity input end and charging electricity
Between road, the comparison circuit input is connected with battery with voltage conversion circuit respectively, the zero cross detection circuit input
End is connected with mains electricity input end, and the output end of the zero cross detection circuit output end and comparison circuit is inputted with decision circuitry respectively
End is connected, and the decision circuitry output end is connected with normally closed relay input.
2. a kind of charger automatically powered off according to claim 1, it is characterised in that：The voltage conversion circuit includes
Three terminal regulator, the three terminal regulator model LM7805, between the three terminal regulator input and earth terminal, output end
It is connected to electric capacity respectively between earth terminal.
3. a kind of charger automatically powered off according to claim 2, it is characterised in that：The comparison circuit includes comparing
Device, first resistor, second resistance, 3rd resistor and the 4th resistance, the battery, first resistor are connected with second resistance,
The voltage conversion circuit output end, 3rd resistor and the 4th resistant series, the comparator homophase input terminate at the first electricity
Between resistance and second resistance, the comparator anti-phase input is terminated between 3rd resistor and the 4th resistance, and the comparator is defeated
Go out end with decision circuitry input to be connected.
4. a kind of charger automatically powered off according to claim 3, it is characterised in that：The zero cross detection circuit includes
First diode, the second diode, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and triode, described first
Diode cathode, the second diode cathode are connected with mains electricity input end Live line Zero line respectively, first diode cathode and
Second diode cathode is connected, and described 5th resistance one end is connected with the first diode cathode, other end ground connection, the described 2nd 2
The negative pole of pole pipe is connected to the ground by the 6th resistance of series connection and the 7th resistance, base stage of the 7th resistor coupled in parallel in triode
Between emitter, the three terminal regulator output end is connected by the 8th resistance with transistor collector, the triode hair
Emitter grounding.
5. a kind of charger automatically powered off according to claim 4, it is characterised in that：The decision circuitry includes and door
Arithmetic unit, the comparator output terminal and transistor collector are connected with door arithmetic unit input respectively, described and door computing
Device output end is connected with normally closed relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720261572.4U CN206575190U (en) | 2017-03-16 | 2017-03-16 | A kind of charger automatically powered off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720261572.4U CN206575190U (en) | 2017-03-16 | 2017-03-16 | A kind of charger automatically powered off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206575190U true CN206575190U (en) | 2017-10-20 |
Family
ID=60055277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720261572.4U Expired - Fee Related CN206575190U (en) | 2017-03-16 | 2017-03-16 | A kind of charger automatically powered off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206575190U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108354470A (en) * | 2018-02-13 | 2018-08-03 | 李家宝 | Intelligent thin pancake robot system |
-
2017
- 2017-03-16 CN CN201720261572.4U patent/CN206575190U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108354470A (en) * | 2018-02-13 | 2018-08-03 | 李家宝 | Intelligent thin pancake robot system |
| CN108354470B (en) * | 2018-02-13 | 2019-12-31 | 李家宝 | Intelligent pancake robot system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20210316 |