CN205753611U - Emergency power supply circuit - Google Patents
Emergency power supply circuit Download PDFInfo
- Publication number
- CN205753611U CN205753611U CN201620117164.7U CN201620117164U CN205753611U CN 205753611 U CN205753611 U CN 205753611U CN 201620117164 U CN201620117164 U CN 201620117164U CN 205753611 U CN205753611 U CN 205753611U
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- relay
- power supply
- supply circuit
- emergency power
- diode
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
This utility model provides a kind of emergency power supply circuit, the input of this emergency power supply circuit is connected with main power source, the outfan of this emergency power supply circuit is connected with load, it includes charger, inverter, with the control circuit and the rechargeable battery that control switch, the input of rechargeable battery is connected with the input of emergency power supply circuit, the outfan of charger is connected with rechargeable battery, rechargeable battery is connected with the input of inverter also by the first control switch and the second control switch of control circuit, the outfan of inverter is connected with the outfan of emergency power supply circuit by the 3rd control switch of control circuit, control circuit form loop by charger and main power source.Emergency power supply circuit structure of the present utility model is simple, be easy to switching and without software control, cost is relatively low.
Description
Technical field
This utility model relates to a kind of power circuit, particularly to a kind of emergency power supply circuit.
Background technology
Have a power failure standby emergency power supply circuit, always is the backup means that electric power system is conventional, plays for power supply standby
Part, the effect of auxiliary.Stopping power supply or break down cannot power once at main power source, emergency power supply circuit needs
To start in time, to replace main power source to be powered.Generally, this power supply only need to maintain minimum load,
Simultaneously also without the long operation time, therefore, the technical characterstic most critical of emergency power supply circuit can be use up exactly
Fast switching, the speed that main power source switches to emergency power supply circuit is the fastest, illustrates that emergency power supply circuit is the best.Prior art
In emergency power supply conventional be push button, need manual switching, switch speed is significantly slower, so exploitation one
The standby power circuit that has a power failure having the highest switch speed is imperative.
Chinese patent notification number: CN101471605, publication date on July 1st, 2009, discloses a kind of power circuit,
It includes a DC high-voltage source, a transformator and a pulse width modulating chip, and this DC high-voltage source exports a high direct voltage；
This pulse width modulating chip is used for controlling to provide load circuit by this high direct voltage via this transformator, and this transformator includes
One high voltage input terminal, it is characterised in that: this power circuit also includes one first switch element；This high direct voltage is via this
This high voltage input terminal that is provided to first switch element triggers the work of this pulse width modulating chip, when this power circuit power-off
Time, this first switch element disconnects.This technical scheme achieves stand-by power supply switching at a high speed, but this technical scheme needs
Pulse width modulating chip to be used, needs software to fire, it is achieved complex, and cost is the highest.
Utility model content
In order to reduce the use cost of emergency power supply, this utility model provides a kind of emergency power supply circuit, simple in construction,
Low cost, it is simple to use.
The emergency power supply circuit that this utility model provides, the input of described emergency power supply circuit is connected with main power source, institute
State the outfan of emergency power supply circuit to be connected with load, described emergency power supply circuit include charger, inverter, with
Control control circuit and the rechargeable battery of switch, the input of described rechargeable battery and the input of described emergency power supply circuit
End connects, and the outfan of described charger is connected with described rechargeable battery, and described rechargeable battery controls electricity also by described
The first control switch on road and second controls switch and is connected with the input of described inverter, the outfan of described inverter
It is connected with the outfan of described emergency power supply circuit by the 3rd control switch of described control circuit, described control circuit
Form loop by described charger and described main power source.
As a kind of embodiment, the control circuit of described emergency power supply circuit includes the first relay, the second relay
Device, the 3rd relay and the first diode；
First outfan of described charger is connected with the anode of described first diode, the negative electrode of described first diode
It is connected with the positive pole of described rechargeable battery；
The negative pole of described rechargeable battery is connected with the second outfan of described charger, the first outfan of described charger
Respectively with the first conduction terminal of described first relay contacts coil, the first conducting of described second relay contacts coil
First conduction terminal of end and described 3rd relay connects, the second conduction terminal of described first relay contacts coil,
Second conduction terminal of the second relay contacts coil and the second conduction terminal of described 3rd relay all with described charging
Second outfan of device connects；
The first input end of described inverter is by the contact switch of described first relay and bearing of described rechargeable battery
Pole connects, and the second input of described inverter is by the contact switch of described 3rd relay and described rechargeable battery
Positive pole connects, and the outfan of described inverter is connected with described load by the contact switch of described second relay.
As a kind of embodiment, described second relay is single-pole double-throw relay, described single-pole double-throw relay
The movable contact of contact switch be connected with the input of described load, the of the contact switch of described single-pole double-throw relay
One stationary contact is connected with described main power source, and the second stationary contact of the contact switch of described single-pole double-throw relay is inverse with described
Become the outfan electrical connection of device.
As a kind of embodiment, the second stationary contact of the contact switch of described second relay is normally-closed contact.
As a kind of embodiment, the contact switch of described first relay is normally-closed contact.
As a kind of embodiment, the contact switch of described 3rd relay is normally opened contact.
As a kind of embodiment, described emergency power supply circuit also includes the second diode；
Described second diode and described second relay contacts coils from parallel connection of coils, and the negative electrode of described second diode and institute
The anode stating the first diode connects, and the anode of described second diode is connected with the second outfan of charger.
As a kind of embodiment, described emergency power supply circuit also includes the 3rd diode；
Described 3rd diode and described 3rd relay contacts coils from parallel connection of coils, and the negative electrode of described 3rd diode and institute
The negative electrode stating the first diode connects, and the described anode of the 3rd diode is connected with the second outfan of charger.
As a kind of embodiment, described emergency power supply circuit also includes stabilivolt；
The negative electrode of the anode of described stabilivolt and described 3rd diode, the first of described 3rd relay contacts coil lead
Go side connects, and the negative electrode of described stabilivolt is connected with the positive pole of described rechargeable battery.
This utility model having the beneficial effects that compared to prior art:
The emergency power supply circuit that this utility model provides, input is connected with main power source, and outfan is connected with load, bag
Include charger, inverter, with control switch control circuit and rechargeable battery, the input of described rechargeable battery with
The input of described emergency power supply circuit connects, and the outfan of described charger is connected with described rechargeable battery, described in fill
Electricity battery switchs and the second input controlling switch and described inverter also by the first control of described control circuit
Connecting, the outfan of described inverter is switched and described emergency power supply circuit by the 3rd control of described control circuit
Outfan connects, described control circuit form loop by described charger and described main power source, it is achieved that main power source
During work, by charger to rechargeable battery powered while powering to the load；When main power source has a power failure, rechargeable battery leads to
Cross inverter to be connected with load, power to the load.Its circuit structure is simple, be easy to switching and without software control,
Cost is relatively low.
Accompanying drawing explanation
The circuit diagram of one embodiment of the emergency power supply circuit that Fig. 1 provides for this utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, to this utility model, above-mentioned and other technical characteristic and advantage are carried out clearly and completely
Describe, it is clear that described embodiment is only section Example of the present utility model rather than whole embodiment.
Refering to Fig. 1, the emergency power supply circuit that this utility model embodiment provides, its input is connected with main power source, defeated
Go out end to be connected with load.This emergency power supply circuit include charger, inverter, with control switch control circuit and
Rechargeable battery, the input of rechargeable battery is connected with the input of emergency power supply circuit, the outfan of charger and charging
Battery connects, and rechargeable battery switchs and the second input controlling switch and inverter also by the first control of control circuit
End connects, and the outfan of inverter switchs the outfan with emergency power supply circuit even by the 3rd control of control circuit
Connect, control circuit form loop by charger and main power source.
Alternatively, the control circuit of emergency power supply circuit include the first relay, the second relay, the 3rd relay with
And first diode；The anode of the first outfan of charger and the first diode connects, the negative electrode of the first diode with
The positive pole of rechargeable battery connects；The negative pole of rechargeable battery is connected with the second outfan of charger, and the first of charger is defeated
Go out end respectively with the first conduction terminal of the first relay contacts coil, the first conduction terminal of the second relay contacts coil with
And the 3rd relay first conduction terminal connect, the second conduction terminal of the first relay contacts coil, the second relay connect
Second conduction terminal of lashing ring and the second conduction terminal of the 3rd relay are all connected with the second outfan of charger；
The first input end of inverter is connected with the negative pole of rechargeable battery by the contact switch of the first relay, inverter
The second input be connected with the positive pole of rechargeable battery by the contact switch of the 3rd relay, the outfan of inverter is logical
The contact switch crossing the second relay is connected with load.
Alternatively, the second relay is single-pole double-throw relay, the movable contact of the contact switch of single-pole double-throw relay with
The input of load connects, and the first stationary contact of the contact switch of single-pole double-throw relay is connected with main power source, and hilted broadsword is double
Second stationary contact of the contact switch throwing relay electrically connects with the outfan of inverter.
Alternatively, the second stationary contact of the contact switch of the second relay is normally-closed contact.
Alternatively, the contact switch of the first relay is normally-closed contact.
Alternatively, the contact switch of the 3rd relay is normally opened contact.
Alternatively, above-mentioned emergency power supply circuit also includes the second diode, the second diode and the second relay contacts line
Circle parallel connection, and the anode connection of the negative electrode of the second diode and the first diode, the anode of the second diode and charger
Second outfan connect.
Alternatively, above-mentioned emergency power supply circuit also includes the 3rd diode, the 3rd diode and the 3rd relay contacts line
Circle parallel connection, and the negative electrode connection of the negative electrode of the 3rd diode and the first diode, the anode of the 3rd diode and charger
Second outfan connect.
Alternatively, above-mentioned emergency power supply circuit also includes stabilivolt, the anode of stabilivolt and the negative electrode of the 3rd diode,
First conduction terminal of the 3rd relay contacts coil connects, and the negative electrode of stabilivolt is connected with the positive pole of rechargeable battery.
Stabilivolt is arranged between the 3rd relay and rechargeable battery, when the undertension of rechargeable battery supply inverter
Time, stabilivolt ends, and the 3rd relay and inverter quit work, and protects inverter.
Seeing Fig. 1, when normally working, main power source AC220V supplies to load 100 and charger 200 simultaneously
Electricity, charger 200 export to the first relay J 1 contact coil and the contact coil of the second relay J 2, the 3rd
Contact coil and the rechargeable battery 300 of relay J 3 are powered, and the normally-closed contact J1K of the first relay J 1 disconnects,
Inverter 400 does not works, and the movable contact J2K of the second relay J 2 disconnects with normally-closed contact, and load 100 is received
AC220V one end, the other end is directly connected to the other end of AC220V.Second relay J 2 electric, load 100 with
Main power source AC220V connects work.
When main power source AC220V has a power failure, charger 200 cannot export the contact coil to the first relay J 1 and
Contact coil and the rechargeable battery 300 of two relay J 2 are powered, now, and the normally-closed contact of the first relay J 1
J1K closes, and the movable contact J2K in the second relay J 2 disconnects with normally opened contact, turns on normally-closed contact, now,
Rechargeable battery 300 is connected with load 100 by inverter 400.Now, rechargeable battery 300 continuation supply the 3rd continues
Electrical equipment J3 running voltage, makes the normally opened contact J3K of the 3rd relay J 3 continue to keep inputting positive pole with inverter 400
End, makes inverter 400 enter duty and is powered to load 100.When rechargeable battery 300 supplies electricity to inverter
400 undertension time stabilivolt D3 cut-off, the 3rd relay J 3 quits work, its normally opened contact J3K disconnect,
Inverter 400 enters off position, thus avoids rechargeable battery 300 and damage because excessively putting.Work as main power source
AC220V incoming call or power failure just repeat the above work process.
The emergency power supply control circuit that this utility model provides, it is achieved that when main power source has a power failure, rechargeable battery is by inverse
Become device to be connected with load, power to the load.Its circuit structure is simple, be easy to switching and without software control, cost
Relatively low, be suitable to promote the use of on a large scale.
The above specific embodiment, has been carried out the purpose of this utility model, technical scheme and beneficial effect further
Detailed description, it will be appreciated that the foregoing is only specific embodiment of the utility model, be not used to limit
Protection domain of the present utility model.Particularly point out, to those skilled in the art, all in essence of the present utility model
Within god and principle, any modification, equivalent substitution and improvement etc. done, should be included in protection of the present utility model
Within the scope of.
Claims (7)
1. an emergency power supply circuit, the input of described emergency power supply circuit is connected with main power source, the outfan of described emergency power supply circuit is connected with load, it is characterized in that: described emergency power supply circuit includes charger, inverter, with the control circuit and the rechargeable battery that control switch, the input of described rechargeable battery is connected with the input of described emergency power supply circuit, the outfan of described charger is connected with described rechargeable battery, described rechargeable battery is connected with the input of described inverter also by the first control switch and the second control switch of described control circuit, the outfan of described inverter is connected with the outfan of described emergency power supply circuit by the 3rd control switch of described control circuit, described control circuit form loop by described charger and described main power source；
Described control circuit includes the 3rd relay and the first diode；
Described emergency power supply circuit also includes the 3rd diode；
Described 3rd diode and described 3rd relay contacts coils from parallel connection of coils, and the negative electrode of described 3rd diode is connected with the negative electrode of described first diode, the described anode of the 3rd diode is connected with the second outfan of charger.
Described emergency power supply circuit also includes stabilivolt；
The anode of described stabilivolt is connected with negative electrode, first conduction terminal of described 3rd relay contacts coil of described 3rd diode, and the negative electrode of described stabilivolt is connected with the positive pole of described rechargeable battery.
Emergency power supply circuit the most according to claim 1, it is characterised in that: described control circuit also includes the first relay and the second relay；
First outfan of described charger is connected with the anode of described first diode, and the negative electrode of described first diode is connected with the positive pole of described rechargeable battery；
The negative pole of described rechargeable battery is connected with the second outfan of described charger, first outfan of described charger the first conduction terminal with the first conduction terminal of described first relay contacts coil, the first conduction terminal of described second relay contacts coil and described 3rd relay respectively is connected, and the second conduction terminal of the second conduction terminal of described first relay contacts coil, the second conduction terminal of the second relay contacts coil and described 3rd relay is all connected with the second outfan of described charger；
The first input end of described inverter is connected with the negative pole of described rechargeable battery by the contact switch of described first relay, second input of described inverter is connected with the positive pole of described rechargeable battery by the described contact switch of the 3rd relay, and the outfan of described inverter is connected with described load by the contact switch of described second relay.
Emergency power supply circuit the most according to claim 2, it is characterized in that: described second relay is single-pole double-throw relay, the movable contact of the contact switch of described single-pole double-throw relay is connected with the input of described load, first stationary contact of the contact switch of described single-pole double-throw relay is connected with described main power source, and the second stationary contact of the contact switch of described single-pole double-throw relay electrically connects with the outfan of described inverter.
Emergency power supply circuit the most according to claim 3, it is characterised in that: the second stationary contact of the contact switch of described second relay is normally-closed contact.
5. according to the emergency power supply circuit described in any one of claim 2 to 4, it is characterised in that: the contact switch of described first relay is normally-closed contact.
6. according to the emergency power supply circuit described in any one of claim 2 to 4, it is characterised in that: the contact switch of described 3rd relay is normally opened contact.
Emergency power supply circuit the most according to claim 1 and 2, it is characterised in that: described emergency power supply circuit also includes the second diode；
Described second diode and described second relay contacts coils from parallel connection of coils, and the negative electrode of described second diode is connected with the anode of described first diode, the anode of described second diode is connected with the second outfan of charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620117164.7U CN205753611U (en) | 2016-02-04 | 2016-02-04 | Emergency power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620117164.7U CN205753611U (en) | 2016-02-04 | 2016-02-04 | Emergency power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205753611U true CN205753611U (en) | 2016-11-30 |
Family
ID=57373681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620117164.7U Active CN205753611U (en) | 2016-02-04 | 2016-02-04 | Emergency power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205753611U (en) |
-
2016
- 2016-02-04 CN CN201620117164.7U patent/CN205753611U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |