CN208401618U - A kind of power supply automatic switchover circuit and ATM machine - Google Patents
A kind of power supply automatic switchover circuit and ATM machine Download PDFInfo
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- CN208401618U CN208401618U CN201820328389.6U CN201820328389U CN208401618U CN 208401618 U CN208401618 U CN 208401618U CN 201820328389 U CN201820328389 U CN 201820328389U CN 208401618 U CN208401618 U CN 208401618U
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- Prior art keywords
- power source
- power supply
- module
- diode
- switch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model belongs to field of power management, disclose a kind of power supply automatic switchover circuit and ATM machine, a kind of power supply automatic switchover circuit includes: to connect with main power source and backup power source, the switch control module for the conducting backup power source power supply when the voltage of main power source is less than voltage threshold；It is connect with switch control module and main power source, for main power source and backup power source to be merged into the merging module of power supply.The utility model main power source voltage be not less than voltage threshold when have turned off backup power source, therefore avoid main power source power supply when backup power source leak electricity, thus caused by waste of energy the problem of, improve properties of product.
Description
Technical field
The utility model belongs to field of power management more particularly to a kind of power supply automatic switchover circuit and ATM machine.
Background technique
Some modules use battery as spare on ATM (Automated Teller Machine, ATM) machine
Power supply can be switched to reserve battery power supply after main power source power down, and prior art power supply handover scheme is, main power source and one
The anode connection of diode, backup power source are connect with the anode of another diode, the cathode and equipment of above-mentioned two diode
Connection, therefore current switching circuit is incomplete, when usually main power source is powered, although machine does not use reserve battery, meeting
There are reserve battery electric leakages.
Utility model content
The utility model provides a kind of power supply automatic switchover circuit and ATM machine, it is intended to it is automatic to solve existing power supply
There is reserve battery electric leakage when main power source is powered in switching circuit.
The utility model is realized in this way a kind of power supply automatic switchover circuit, the power supply automatic switchover circuit include:
It is connect with main power source and backup power source, it is described standby for being connected when the voltage of the main power source is less than voltage threshold
With the switch control module of power supply power supply；
It is connect with the switch control module and the main power source, for merging the main power source and the backup power source
For the merging module of power supply.
The utility model embodiment is being incited somebody to action by the conducting backup power source power supply when the voltage of main power source is less than voltage threshold
Main power source and backup power source merge into power supply to be powered to equipment, due to being only less than voltage threshold in the voltage of main power source
Backup power source power supply is connected when value, has turned off the backup power source when the voltage of main power source is not less than voltage threshold, therefore avoids
Backup power source leaks electricity when main power source power supply, thus caused by waste of energy the problem of, improve properties of product, increase product
The market competitiveness.
Detailed description of the invention
It is novel in order to illustrate more clearly of the technical application in the utility model embodiment, it below will be in embodiment description
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of function structure chart of power supply automatic switchover circuit provided by the embodiment of the utility model；
Fig. 2 is a kind of modular structure of power supply automatic switchover circuit switch control module provided by the embodiment of the utility model
Figure；
Fig. 3 is the exemplary circuit structure chart of power supply automatic switchover circuit provided by the embodiment of the utility model.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Fig. 1 shows the modular structure of power supply automatic switchover circuit provided by the embodiment of the utility model, for the ease of saying
It is bright, part relevant to the utility model embodiment is illustrated only, details are as follows:
Power supply automatic switchover circuit includes:
It is connect with main power source VIN and backup power source VBAT, for being connected when the voltage of main power source VIN is less than voltage threshold
The switch control module 01 of backup power source VBAT power supply.
It is connect with switch control module 01 and main power source VIN, for main power source VIN and backup power source VBAT to be merged into confession
The merging module 02 of power supply.
When the voltage of main power source VIN is less than voltage threshold, backup power source VBAT power supply is connected in switch control module 01, when
Switch control module 01 turns off backup power source VBAT power supply, merging module 02 when the voltage of main power source VIN is not less than voltage threshold
Main power source VIN and backup power source VBAT are merged into power supply to be powered to equipment, since switch control module 01 exists
When main power source VIN powers, backup power source VBAT is had turned off, backup power source VBAT leaks electricity when avoiding main power source VIN power supply, thus
Caused by waste of energy the problem of.
In specific implementation, as shown in Fig. 2, switch control module 01 includes: to connect with main power source VIN and backup power source VBAT
It connects, for generating the voltage detection module 011 of voltage detection signal according to the voltage of main power source VIN；With voltage detection module 011
Connection, for generating the first switch module 012 of first switch signal according to voltage detection module 011；With first switch module
012 connects with backup power source VBAT, the second switch module for being powered according to first switch signal conduction backup power source VBAT
013。
Fig. 3 shows the exemplary circuit structure of power supply automatic switchover circuit provided by the embodiment of the utility model, in order to just
In explanation, part relevant to the utility model embodiment is illustrated only, details are as follows:
Voltage detection module 011 includes phase inverter U1, first resistor R1 and second resistance R2.
The input terminal IN of phase inverter U1 is connect with the first end of the first end of first resistor R1 and second resistance R2, phase inverter
The output end of U1 is the output end of voltage detection module 011, and the second end of first resistor is the first defeated of voltage detection module 011
Enter end, the power end VCC of phase inverter U1 is the second input terminal of voltage detection module 011, the second end of second resistance R2 and anti-
The ground terminal GND of phase device U1 is connected to power ground altogether.
In specific implementation, phase inverter U1 can be schmitt inverter.
First switch module 012 includes the second field-effect tube M2 and the 4th resistance R4.
The grid of second field-effect tube M2 be first switch module 012 input terminal, the drain electrode of the second field-effect tube M2 with
The first end of 4th resistance R4 connects, and the second end of the 4th resistance R4 is the output end of first switch module 012, the second field-effect
The source electrode of pipe M2 is connect with power ground.
Electric second switch module 013 includes the first field-effect tube M1, first capacitor C1 and 3rd resistor R3.
The first end of the drain electrode of first field-effect tube M1, the first end of first capacitor C1 and 3rd resistor R3 is opened for second
Close the first input end of module 013, the grid of the first field-effect tube M1, the second end of first capacitor C1 and 3rd resistor R3
Second end is the second input terminal of second switch module 013, and the source electrode of the first field-effect tube M1 is the defeated of second switch module 013
Outlet.
Merging module 02 includes first diode D1, the second diode D2, third diode D3 and the 4th diode D4.
The anode of first diode D1 and the anode of the second diode D2 collectively form the first input end of merging module 02,
The anode of third diode D3 and the anode of the 4th diode D4 collectively form the second input terminal of merging module 02, and the one or two
The cathode of pole pipe D1, the cathode of the second diode D2, the cathode of the cathode of third diode D3 and the 4th diode D4 are common
Constitute the output end of merging module 02.
In specific implementation, first diode D1 to the 4th diode D4 can be Schottky diode.
It is described further below in conjunction with working principle to shown in Fig. 3:
In the specific implementation process, when main power source VIN is under-voltage or power down, the voltage of main power source VIN is less than voltage threshold,
The voltage of main power source VIN is divided through first resistor R1 and second resistance R2, output low level to phase inverter U1, and phase inverter output is high
For level to the second field-effect tube M2, the second field-effect tube M2 conducting, the grid of the first field-effect tube M1 is high level, first effect
Should pipe M1 conducting, backup power source VBAT exported by the first field-effect tube M1 to merging module 02, and eventually as power supply
It exports to equipment.
When main power source VIN is normal, the voltage of main power source VIN is not less than voltage threshold, and the voltage of main power source VIN is through first
Resistance R1 and second resistance R2 partial pressure, output high level to phase inverter U1, phase inverter output low level to the second field-effect tube M2,
Second field-effect tube M2 cut-off, the grid of the first field-effect tube M1 are low level, and the first field-effect tube M1 ends, therefore is disconnected standby
With the output of power supply VBAT, main power source VIN is exported to merging module 02, and is exported eventually as power supply to equipment.
The utility model embodiment also provides a kind of ATM machine, and ATM machine includes above-mentioned power supply automatic switchover circuit.
The utility model embodiment is by being connected the backup power source when the voltage of the main power source is less than voltage threshold
Power supply, is merging into power supply to be powered to equipment, due to only described for the main power source and the backup power source
The backup power source power supply is connected in the voltage of main power source when being less than voltage threshold, be not less than voltage threshold in the voltage of the main power source
Backup power source leaks electricity when having turned off the backup power source when value, therefore avoiding main power source power supply, thus caused by waste of energy
Problem improves properties of product, increases the competitiveness of product in market.Meanwhile in the drain electrode of the first field-effect tube and first
It is provided with first capacitor between the grid of effect pipe, when power supply switches to backup power source by main power source, realizes switch control
The delay startup of the output voltage of molding block controls, and avoids the instantaneous large-current for the equipment side being powered.Due to using parallel connection
The mode of multiple Schottky diodes is realized to main power source and backup power source merging, therefore reduces the pressure difference of combining unit, is reduced
System power dissipation.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. a kind of power supply automatic switchover circuit, which is characterized in that the power supply automatic switchover circuit includes:
It is connect with main power source and backup power source, for the standby electricity to be connected when the voltage of the main power source is less than voltage threshold
The switch control module of source power supply；
It is connect with the switch control module and the main power source, for the main power source and the backup power source to be merged into confession
The merging module of power supply.
2. power supply automatic switchover circuit as described in claim 1, which is characterized in that the switch control module includes:
It is connect with the main power source and the backup power source, for generating voltage detection signal according to the voltage of the main power source
Voltage detection module；
It is connect with the voltage detection module, for generating the first switch of first switch signal according to the voltage detection module
Module；
It is connect with the first switch module and the backup power source, is used for the backup power source according to first switch signal conduction
The second switch module of power supply.
3. power supply automatic switchover circuit as claimed in claim 2, which is characterized in that the voltage detection module includes reverse phase
Device, first resistor and second resistance；
The input terminal of the phase inverter is connect with the first end of the first end of the first resistor and the second resistance, described anti-
The output end of phase device is the output end of the voltage detection module, and the second end of the first resistor is the voltage detection module
First input end, the power end of the phase inverter is the second input terminal of the voltage detection module, the second resistance
The ground terminal of second end and the phase inverter is connected to power ground altogether.
4. power supply automatic switchover circuit as claimed in claim 2, which is characterized in that the first switch module includes second
Effect pipe and the 4th resistance；
The grid of second field-effect tube be the first switch module input terminal, the drain electrode of second field-effect tube with
The first end of 4th resistance connects, and the second end of the 4th resistance is the output end of the first switch module, described
The source electrode of second field-effect tube is connect with power ground.
5. power supply automatic switchover circuit as claimed in claim 2, which is characterized in that the second switch module includes first
Effect pipe, first capacitor and 3rd resistor；
The first end of the drain electrode of first field-effect tube, the first end of the first capacitor and the 3rd resistor is described
The first input end of second switch module, the grid of first field-effect tube, the second end of the first capacitor and described
The second end of 3rd resistor is the second input terminal of the second switch module, and the source electrode of first field-effect tube is described the
The output end of two switch modules.
6. power supply automatic switchover circuit as described in claim 1, which is characterized in that the merging module includes the one or two pole
Pipe, the second diode, third diode and the 4th diode；
The anode of the first diode and the anode of second diode collectively form the first input of the merging module
End, the anode of positive and described 4th diode of the third diode collectively form the second input of the merging module
End, the cathode of the first diode, the cathode of second diode, the third diode cathode and the described 4th
The cathode of diode collectively forms the output end of the merging module.
7. a kind of ATM machine, which is characterized in that the ATM machine includes that the power supply as described in claim 1 to 6 any one is automatic
Switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820328389.6U CN208401618U (en) | 2018-03-09 | 2018-03-09 | A kind of power supply automatic switchover circuit and ATM machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820328389.6U CN208401618U (en) | 2018-03-09 | 2018-03-09 | A kind of power supply automatic switchover circuit and ATM machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208401618U true CN208401618U (en) | 2019-01-18 |
Family
ID=65064024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820328389.6U Expired - Fee Related CN208401618U (en) | 2018-03-09 | 2018-03-09 | A kind of power supply automatic switchover circuit and ATM machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208401618U (en) |
-
2018
- 2018-03-09 CN CN201820328389.6U patent/CN208401618U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190118 |