CN108565961A - There is one kind counnter attack to fill power supply automatic switchover without crushing output circuit - Google Patents
There is one kind counnter attack to fill power supply automatic switchover without crushing output circuit Download PDFInfo
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- CN108565961A CN108565961A CN201810597925.7A CN201810597925A CN108565961A CN 108565961 A CN108565961 A CN 108565961A CN 201810597925 A CN201810597925 A CN 201810597925A CN 108565961 A CN108565961 A CN 108565961A
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- field
- power supply
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- connect
- feeder ear
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- 230000005669 field effect Effects 0.000 claims abstract description 55
- 230000005611 electricity Effects 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 210000005069 ears Anatomy 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses one kind there is counnter attack to fill power supply to automatically switch, without crushing output circuit, to belong to electronic technology field, including the first feeder ear, the second feeder ear, power supply unit and power supply are automatically switched without crushing output circuit；The power supply automatically switches without crushing output circuit to include reducing transformer U2, field-effect tube Q1, Q2 and Q3；The anode of first feeder ear is connect with the input terminal of U2, and the voltage output end of U2 connect with power supply unit, connect with the drain electrode of Q1 respectively, and the drain electrode of the ground terminal and Q3 of U2 connects, the source electrode ground connection of Q3；The grid of Q3 is connect with the grid of the grid of Q1, Q2 respectively, and the source electrode of Q1 and the source electrode of Q2 connect, and the drain electrode of Q2 is connect with the second feeder ear anode；First feeder ear, the second feeder ear cathode be grounded.The circuit makes output voltage that there is continuity to ensure equipment the operation is stable in power switching, and can prevent from instead filling the damage for causing loss and device between electric current, keeps output voltage more stable.
Description
Technical field
The present invention relates to electronic technology fields, more particularly to a kind of that there is counnter attack filling power supply to automatically switch to export electricity without crushing
Road.
Background technology
In fields such as heat supply, power supplies, equipment generally uses battery powered, and cell damage or electricity, which exhaust, causes equipment can not
It uses.In order to avoid the damage of equipment, ensure that service life of equipment, the quality of reliability and output voltage to power supply propose
Higher requirement.For example, when equipment has mains-supplied, cut-out battery powered is automatically switched when alternating current is powered off by hardware
To battery powered；Voltage output is exported using no crushing, improves power supply quality etc..
Currently, power switching circuit use diode unilateral conduction principle carry out equipment power supply, metal-oxide-semiconductor switching with
And relay switching etc..It has a disadvantage in that：Diode with 0.3-1V differential pressure characteristics and be affected by temperature it is larger, therefore generate
Crushing and output voltage wild effect cause relay switching to have lag characteristic, cause the discontinuity of power supply, and fill without anti-
Protection.
Invention content
Present invention aims at provide a kind of power with counnter attack filling to automatically switch without crushing output circuit, to ensure to power
Switching circuit has anti-filling defencive function.
In order to achieve the above object, the present invention using a kind of there is counnter attack filling power supply to automatically switch without crushing output circuit, packet
It includes：First feeder ear, the second feeder ear, power supply unit and power supply are automatically switched without crushing output circuit；The power supply is automatic
Switching includes reducing transformer U2, field-effect tube Q1, field-effect tube Q2 and field-effect tube Q3 without crushing output circuit；
The anode of first feeder ear is connect with the input terminal of reducing transformer U2, the voltage output end of reducing transformer U2 respectively with power supply unit
Connection is connect with the drain electrode of field-effect tube Q1, and the ground terminal of reducing transformer U2 is connect with the drain electrode of field-effect tube Q3, field-effect tube Q3
Source electrode ground connection；
The grid of field-effect tube Q3 is connect with the grid of the grid of field-effect tube Q1, field-effect tube Q2 respectively, field-effect tube Q1's
Source electrode is connect with the source electrode of field-effect tube Q2, and the drain electrode of field-effect tube Q2 is connect with the anode of the second feeder ear；
The cathode of first feeder ear, the second feeder ear cathode be grounded.
Preferably, the grid of the field-effect tube Q3 is also connect with one end of resistance R102, respectively with the one of resistance R103
End connection, the other end of resistance R102 are connect with the first feeder ear anode, the other end ground connection of resistance R103.
Preferably, first feeder ear is mains-supplied, and the second feeder ear is battery powered.
Preferably, the field-effect tube Q1, field-effect tube Q2 and field-effect tube Q3 are metal-oxide-semiconductor.
Preferably, the power supply unit includes calorimeter, water meter, ammeter or gas meter, flow meter.
Compared with prior art, there are following technique effects by the present invention：It is provided by the invention to automatically switch to export without crushing
Circuit is when the first feeder ear is powered, field-effect tube Q3 conductings, field-effect tube Q1, field-effect tube Q2 cut-offs, the electricity of reducing transformer U2
The voltage that output end exports the first feeder ear is pressed to place drop using the shutdown of field-effect tube Q1, field-effect tube Q2 to power supply unit
The current flowing backwards of the output end output of depressor U2 are to the second feeder ear.When the first feeder ear powers off, field-effect tube Q3 cut-offs, field
Effect pipe Q1, field-effect tube Q2 conducting, the voltage output end of reducing transformer U2 export the voltage of the second feeder ear to power supply unit, field
The cut-off of effect pipe Q3, which has, prevents the output end output current of reducing transformer U2 is counter to be poured into the first feeder ear.
Description of the drawings
Below in conjunction with the accompanying drawings, the specific implementation mode of the present invention is described in detail：
Fig. 1 is a kind of with functional block diagram of the counnter attack filling power supply automatic switchover without crushing output circuit；
Fig. 2 is a kind of with topology diagram of the counnter attack filling power supply automatic switchover without crushing output circuit.
Specific implementation mode
In order to illustrate further the feature of the present invention, reference should be made to the following detailed description and accompanying drawings of the present invention.Institute
Attached drawing is only for reference and purposes of discussion, is not used for limiting protection scope of the present invention.
As shown in Figure 1 to Figure 2, present embodiment discloses one kind there is counnter attack to fill power supply to automatically switch to export electricity without crushing
Road, including the first feeder ear P1, the second feeder ear P3, power supply unit and power supply are automatically switched without crushing output circuit；It is described
Power supply automatically switches without crushing output circuit to include reducing transformer U2, field-effect tube Q1, field-effect tube Q2 and field-effect tube Q3；
The pin 1 of first feeder ear P1（Anode）Connect with the pin 1 of reducing transformer U2, the pin 5 of reducing transformer U2 respectively with power supply
Equipment connection is connect with the drain electrode of field-effect tube Q1, and the pin 2 of reducing transformer U2 is connect with the drain electrode of field-effect tube Q3, field-effect
The source electrode of pipe Q3 is grounded；
The grid of field-effect tube Q3 connect with the grid of field-effect tube Q1 respectively, is connect with the grid of field-effect tube Q2 and resistance
One end connection of R102 is connect, the pin 1 of the other end of resistance R102 and the first feeder ear P1 with one end of resistance R103
（Anode）Connection, the other end ground connection of resistance R103；
The source electrode of field-effect tube Q1 is connect with the source electrode of field-effect tube Q2, the pipe of the drain electrode and the second feeder ear P3 of field-effect tube Q2
Foot 1（Anode）Connection；
The pin 2 of first feeder ear P1（Cathode）, the second feeder ear P3 pin 2（Cathode）It is grounded.
Further, the first feeder ear is mains-supplied, and the second feeder ear is battery powered.
Further, field-effect tube Q1, field-effect tube Q2 and field-effect tube Q3 are metal-oxide-semiconductor.
Further, power supply unit includes but not limited to calorimeter, water meter, ammeter, gas meter, flow meter etc..
It is provided in this embodiment it is a kind of have counnter attack fill power supply automatically switch the operation principle without crushing output circuit be：
When the first feeder ear P1 power supplies, Q3 conductings, Q1 and Q2 cut-offs, the ends VOUT of reducing transformer U2 export the electricity of the first feeder ear
Pressure is supplied to power supply unit, the shutdown of Q1 and Q2 to have the function of the current flowing backwards for preventing VOUT from exporting to the second feeder ear；When
When first feeder ear powers off, Q3 is by the ends VOUT of Q1 and Q2 conductings, reducing transformer U2 export the voltage extremely power supply of the second feeder ear
Equipment, Q3 by having the function of preventing the current flowing backwards that VOUT is exported to the first feeder ear.
In addition, power supply automatically switches to make power supply have firmly by the grid of the grid and Q2 that control Q1 without crushing output circuit
Part automatic switching function, and with no crushing voltage output characteristics when metal-oxide-semiconductor Q1, Q2 conducting.
A kind of power supply having without crushing output circuit with counnter attack filling power supply automatic switchover provided in this embodiment is automatic
Handoff functionality, and make output voltage that there is continuity to ensure equipment the operation is stable in power switching, it solves using diode
It crushing phenomenon caused by concatenation and prevents from instead filling the damage for causing loss and device between electric current, keeps output voltage more stable.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (5)
- Automatically switch without crushing output circuit 1. there is one kind counnter attack to fill power supply, which is characterized in that including：First feeder ear, Two feeder ears, power supply unit and power supply are automatically switched without crushing output circuit；The power supply automatically switches to export electricity without crushing Road includes reducing transformer U2, field-effect tube Q1, field-effect tube Q2 and field-effect tube Q3；The anode of first feeder ear is connect with the input terminal of reducing transformer U2, the voltage output end of reducing transformer U2 respectively with power supply unit Connection is connect with the drain electrode of field-effect tube Q1, and the ground terminal of reducing transformer U2 is connect with the drain electrode of field-effect tube Q3, field-effect tube Q3 Source electrode ground connection；The grid of field-effect tube Q3 is connect with the grid of the grid of field-effect tube Q1, field-effect tube Q2 respectively, field-effect tube Q1's Source electrode is connect with the source electrode of field-effect tube Q2, and the drain electrode of field-effect tube Q2 is connect with the anode of the second feeder ear；The cathode of first feeder ear, the second feeder ear cathode be grounded.
- 2. there is counnter attack to fill power supply as described in claim 1 to automatically switch without crushing output circuit, which is characterized in that the field The grid of effect pipe Q3 also connect respectively with one end of resistance R102, is connect with one end of resistance R103, and resistance R102's is another End is connect with the first feeder ear anode, the other end ground connection of resistance R103.
- 3. there is counnter attack to fill power supply as described in claim 1 to automatically switch without crushing output circuit, which is characterized in that described the One feeder ear is mains-supplied, and the second feeder ear is battery powered.
- 4. there is counnter attack to fill power supply as described in claim 1 to automatically switch without crushing output circuit, which is characterized in that the field Effect pipe Q1, field-effect tube Q2 and field-effect tube Q3 are metal-oxide-semiconductor.
- 5. there is counnter attack to fill power supply as described in claim 1 to automatically switch without crushing output circuit, which is characterized in that the confession Electric equipment includes calorimeter, water meter, ammeter or gas meter, flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810597925.7A CN108565961A (en) | 2018-06-11 | 2018-06-11 | There is one kind counnter attack to fill power supply automatic switchover without crushing output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810597925.7A CN108565961A (en) | 2018-06-11 | 2018-06-11 | There is one kind counnter attack to fill power supply automatic switchover without crushing output circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108565961A true CN108565961A (en) | 2018-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810597925.7A Pending CN108565961A (en) | 2018-06-11 | 2018-06-11 | There is one kind counnter attack to fill power supply automatic switchover without crushing output circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808629A (en) * | 2019-10-15 | 2020-02-18 | 合肥联宝信息技术有限公司 | Dual-power switching circuit and dual-power switching controller |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136558A (en) * | 2006-09-02 | 2008-03-05 | 深圳迈瑞生物医疗电子股份有限公司 | Power supply system and switch circuit, switch method of main power source and backup battery |
| CN201194077Y (en) * | 2008-05-05 | 2009-02-11 | 英业达股份有限公司 | Double electric power loop switching apparatus |
| CN204030707U (en) * | 2014-08-11 | 2014-12-17 | 苏州金双龙电子有限公司 | Auto-switch circuit between a kind of main power supply |
| CN105244864A (en) * | 2015-11-18 | 2016-01-13 | 四川汇源光通信有限公司 | Anti-flowing backwards protection circuit |
| CN105576816A (en) * | 2014-11-10 | 2016-05-11 | 鸿富锦精密工业(武汉)有限公司 | Switching circuit |
| CN106787130A (en) * | 2016-12-20 | 2017-05-31 | 深圳市元征科技股份有限公司 | A kind of power supply switch circuit and terminal |
| CN106816951A (en) * | 2016-10-18 | 2017-06-09 | 广东探金电子科技有限公司 | A kind of seamless automatic battery switching circuit |
| CN208316403U (en) * | 2018-06-11 | 2019-01-01 | 瑞纳智能设备股份有限公司 | There is one kind counnter attack to fill power supply automatic switchover without crushing output circuit |
-
2018
- 2018-06-11 CN CN201810597925.7A patent/CN108565961A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136558A (en) * | 2006-09-02 | 2008-03-05 | 深圳迈瑞生物医疗电子股份有限公司 | Power supply system and switch circuit, switch method of main power source and backup battery |
| CN201194077Y (en) * | 2008-05-05 | 2009-02-11 | 英业达股份有限公司 | Double electric power loop switching apparatus |
| CN204030707U (en) * | 2014-08-11 | 2014-12-17 | 苏州金双龙电子有限公司 | Auto-switch circuit between a kind of main power supply |
| CN105576816A (en) * | 2014-11-10 | 2016-05-11 | 鸿富锦精密工业(武汉)有限公司 | Switching circuit |
| CN105244864A (en) * | 2015-11-18 | 2016-01-13 | 四川汇源光通信有限公司 | Anti-flowing backwards protection circuit |
| CN106816951A (en) * | 2016-10-18 | 2017-06-09 | 广东探金电子科技有限公司 | A kind of seamless automatic battery switching circuit |
| CN106787130A (en) * | 2016-12-20 | 2017-05-31 | 深圳市元征科技股份有限公司 | A kind of power supply switch circuit and terminal |
| CN208316403U (en) * | 2018-06-11 | 2019-01-01 | 瑞纳智能设备股份有限公司 | There is one kind counnter attack to fill power supply automatic switchover without crushing output circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808629A (en) * | 2019-10-15 | 2020-02-18 | 合肥联宝信息技术有限公司 | Dual-power switching circuit and dual-power switching controller |
| CN110808629B (en) * | 2019-10-15 | 2021-10-22 | 合肥联宝信息技术有限公司 | Dual-power switching circuit and dual-power switching controller |
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