CN108173432A - Switching power circuit and industrial gateway system - Google Patents

Switching power circuit and industrial gateway system Download PDF

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Publication number
CN108173432A
CN108173432A CN201711499490.4A CN201711499490A CN108173432A CN 108173432 A CN108173432 A CN 108173432A CN 201711499490 A CN201711499490 A CN 201711499490A CN 108173432 A CN108173432 A CN 108173432A
Authority
CN
China
Prior art keywords
module
power supply
switch
voltage
switching power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711499490.4A
Other languages
Chinese (zh)
Inventor
于博洋
吴信宜
韩烨
黄侠
师保利
张兴钙
李文彬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Zhuhai Gree Intelligent Equipment Technology Research Institute Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Zhuhai Gree Intelligent Equipment Technology Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai, Zhuhai Gree Intelligent Equipment Technology Research Institute Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201711499490.4A priority Critical patent/CN108173432A/en
Publication of CN108173432A publication Critical patent/CN108173432A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/14Arrangements for reducing ripples from dc input or output
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/22Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop

Abstract

The invention discloses a kind of switching power circuit and industrial gateway system, wherein, switching power circuit includes:Switch power module, for the power supply of access to be converted to high frequency electric source;Voltage isolation module, the input terminal of the voltage isolation module are connect with the switch power module, and the voltage isolation module includes multiple output terminals, electrical isolation between multiple output terminals of the voltage isolation module.The high frequency electric source that voltage isolation module can export switch power module carries out transformation processing, meets the needs of being followed by load, input voltage and output voltage can be carried out electrical isolation by voltage isolation module, filter out the interference of input voltage, the stability of output voltage is improved, realizes that input is isolated with output.Voltage isolation module includes multiple outlets, is also electrical isolation between multiple output terminals, can be followed by load to multiple and is isolated, realize the isolation between load.It can be to avoid the interference between load.

Description

Switching power circuit and industrial gateway system
Technical field
The present invention relates to power technique fields, and in particular to a kind of switching power circuit and industrial gateway system.
Background technology
With the progress of industry, industrial field device is gradually increased, it is gradually crisscross multiple in industrial environment Miscellaneous, industrial power and industry spot communication module seriously affect the normal of industrial gateway core component due to being influenced by environment Operation.
Existing power supply circuit generally use linear stabilized power supply or non-isolated Switching Power Supply are powered, however, linearly Regulated power supply output power is smaller and generates heat seriously, and non-isolated Switching Power Supply interference is larger.It usually can also there are industrial electros Source is mutual to the interference of industrial gateway core component or industrial gateway core component, more serious influence communication quality and core The normal operation of core module.
Invention content
The technical problem to be solved in the present invention is to reduce the interference of industrial gateway nucleus module and communication module.
According in a first aspect, an embodiment of the present invention provides a kind of switching power circuit, including:Switch power module is used In the power supply of access is converted to high frequency electric source;Voltage isolation module, the input terminal and switch power module of voltage isolation module Connection, voltage isolation module include multiple output terminals, electrical isolation between multiple output terminals of voltage isolation module.
Optionally, voltage isolation module is isolating transformer.
Optionally, isolating transformer includes:Primary side main winding, one end of primary side main winding are connect with the power supply accessed, former The other end of side main winding and the output terminal of switch power module connect;At least one primary side auxiliary winding, primary side auxiliary winding One end and switch power module high level input terminal;Multiple vice-side windings, electrical isolation between multiple vice-side windings.
Optionally, switch power module includes:Switch controller of power supply, input terminal and the access of switch controller of power supply Power supply connects;The output terminal of controllable switch, the control terminal of controllable switch and power supply changeover device connects, the output terminal of controllable switch with The input terminal connection of voltage isolation module.
Optionally, switch power module includes:Controllable switch is metal-oxide-semiconductor, the output of the grid and power supply changeover device of metal-oxide-semiconductor End connection, the grid of metal-oxide-semiconductor are connect with the input terminal of voltage isolation module, the source electrode of MOS pipes and the electric current of switch power module Test side connects.
Optionally, switching power circuit further includes:Multiple rectifying and wave-filtering output modules are more with voltage isolation module respectively A output terminal connection, for carrying out rectifying and wave-filtering to voltage isolation module output voltage.
Optionally, switching power circuit includes:Rectifying and wave-filtering input module is arranged on the input terminal of switch power module, For carrying out rectifying and wave-filtering to the power supply of access.
Optionally, switching power circuit includes:Feedback module, one end of feedback module are exported at least one rectifying and wave-filtering The output terminal connection of module, the other end of feedback module and the feedback end of switch power module connect.
Optionally, feedback module includes optical coupling isolation circuit, is arranged on the output terminal and switch power module of feedback module Feedback end between.
According to second aspect, an embodiment of the present invention provides a kind of industrial gateway system, including:Communication module;Core is used Electric module;And the Switching Power Supply power supply circuit of above-mentioned first aspect any one;The output module of Switching Power Supply power supply circuit Communication module and core electricity consumption module are respectively connected to, for the input power of industrial gateway system to be isolated with out-put supply, And communication module is isolated with core electricity consumption module.
An embodiment of the present invention provides a kind of switching power circuit and industrial gateway system, switch power modules, for inciting somebody to action The power supply of access is converted to high frequency electric source;Voltage isolation module, the input terminal of voltage isolation module are connect with switch power module, Voltage isolation module includes multiple output terminals, electrical isolation between multiple output terminals of voltage isolation module.Voltage isolation module The high frequency electric source that switch power module can be exported carries out transformation processing, meets the needs of being followed by load, voltage isolation module Can input voltage and output voltage be subjected to electrical isolation, filter out the interference of input voltage, improve the stability of output voltage, Realize that input is isolated with output.Voltage isolation module includes multiple outlets, is also electrical isolation between multiple output terminals, can be right It is multiple be followed by load be isolated, realize load between isolation.It can be to avoid the interference between load.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 shows the modular schematic diagram of the switching power circuit of the embodiment of the present invention;
Fig. 2 shows the modular schematic diagrames of the switching power circuit of another embodiment of the present invention;
Fig. 3 shows the schematic diagram of the circuit theory of the switching power circuit of the embodiment of the present invention.
Specific embodiment
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's all other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected;It can To be mechanical connection or be electrically connected;It can be directly connected, can also be indirectly connected by intermediary, it can be with It is the connection inside two elements, can is wireless connection or wired connection.For those of ordinary skill in the art For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
An embodiment of the present invention provides a kind of switching power circuit, which can include:Switching Power Supply mould Block 10, for the power supply of access to be converted to high frequency electric source;Voltage isolation module 20, the input terminal of voltage isolation module 20 is with opening Powered-down source module 10 connects, and voltage isolation module 20 includes multiple output terminals, between multiple output terminals of voltage isolation module 20 Electrical isolation;In the particular embodiment, switch power module 10 can be AC-DC Switching Power Supplies, can be DC-DC switch electricity The power supply of access can be converted to high frequency electric source by source, in the present embodiment, Switching Power Supply, meanwhile, power supply can be become Pressure, specifically can according to needed for load voltage class selecting switch power module 10.Voltage isolation module 20 is arranged on switch The output terminal of power module 10, specifically, voltage isolation module 20 can by the high frequency electric source that switch power module 10 exports into The processing of row transformation, meets the needs of being followed by load, and voltage isolation module 20 can carry out input voltage and output voltage electrical Isolation, filters out the interference of input voltage, improves the stability of output voltage, realizes that input is isolated with output.Voltage isolation module 20 include multiple outlets, are also electrical isolation between multiple output terminals, can be followed by load to multiple and are isolated, realize load Between isolation.It can be to avoid the interference between load.
In an alternate embodiment of the invention, voltage isolation module 20 can be isolating transformer, and isolating transformer includes:Primary side master Winding, one end of primary side main winding are connect with the power supply accessed, and the other end of primary side main winding is defeated with switch power module 10 Outlet connects;At least one primary side auxiliary winding, one end of primary side auxiliary winding are inputted with the high level of switch power module 10 End;Multiple vice-side windings, electrical isolation can pass through when different loads needs different voltages between multiple vice-side windings Change the number of turn of vice-side winding, different voltage is provided for load.
In optionally in real time, switch power module 10 includes:Switch controller of power supply U1, switch controller of power supply it is defeated Enter end and connect with the power supply accessed;Controllable switch, the control terminal of controllable switch and the output terminal of power supply changeover device connect, and controllably open The output terminal of pass is connect with the input terminal of voltage isolation module 20.In the particular embodiment, switch controller of power supply U1, can be with Select boost pressure controller, such as LM5022 chips.In the present embodiment, to switch controller of power supply by taking LM5022 chips as an example U1 pin configuration is described in detail, as shown in figure 3, what the first pin 1 was connect by first resistor R1 with the first diode D1 Cathode connects, and the anode of the first diode D1 is connect with the power supply accessed, and the first pin is also grounded by the first capacitance C1;Second Pin 2 is grounded;Third pin 3 is connect with the output terminal of the optical coupling isolation circuit 51 of feedback module 50, and the 4th pin 4 connects respectively To the second diode D2 and the cathode of third diode D3, the anode of the second diode D2 and the auxiliary of isolating transformer T1 around Group connection, the plus earth of third diode D3, the 4th pin 4 are also grounded by the second capacitance C2.5th pin and metal-oxide-semiconductor Q1 Grid connection, the grid of metal-oxide-semiconductor Q1 connect with the input terminal of voltage isolation module 20, and the source electrode of metal-oxide-semiconductor Q1 is grounded.6th draws Foot 6 is grounded.7th pin 7 acquires input voltage signal and is connect by second resistance R2 with the power supply accessed, and the 7th pin 7 is also It is grounded by 3rd resistor R3.8th pin, 8 current detecting is connected to the source electrode of metal-oxide-semiconductor Q1.9th pin 9 passes through the 4th electricity R4 ground connection is hindered, for regulating switch supply frequency.
In an alternate embodiment of the invention, as shown in Fig. 2, Switching Power Supply can also include multiple rectifying and wave-filtering output modules 30, It is connect respectively with multiple output terminals of voltage isolation module 20, for carrying out rectification filter to 20 output voltage of voltage isolation module Wave.In the particular embodiment, rectifying and wave-filtering output module 30 can be two or more, for convenience of description, in this reality It applies in example, the circuit structure of one of them the first rectifying and wave-filtering output module 30 is illustrated, as shown in figure 3, rectifying and wave-filtering Output module 30 can be filtered by the 4th diode D4, by the output terminal for being connected in parallel on rectifying and wave-filtering output module 30 Between the 4th capacitance C4 the 5th capacitance C5 and the 6th capacitance C6 and inductance be filtered.
In an alternate embodiment of the invention, as shown in Fig. 2, switching power circuit can also include:Rectifying and wave-filtering input module 40, The input terminal of switch power module 10 is arranged on, for carrying out rectifying and wave-filtering to the power supply of access.In the particular embodiment, it is whole Stream filtering input module 40 physical circuit figure can with as shown in figure 3, can include rectifier bridge DB, be arranged on input terminal, it is multiple Filter capacitor is arranged on the output terminal of rectifier bridge DB.
In an alternate embodiment of the invention, as shown in Fig. 2, switching power circuit further includes feedback module 50, feedback module 50 One end is connect with the output terminal of at least one rectifying and wave-filtering output module 30, the other end and switch power module of feedback module 50 10 feedback end connection.Feedback module 50 includes optical coupling isolation circuit, is arranged on the output terminal and Switching Power Supply of feedback module 50 Between the feedback end of module 10.Output terminal and feedback end can be isolated in optical coupling isolation circuit, output terminal can be carried out further Isolation.
The embodiment of the present invention additionally provides a kind of industrial gateway system, including:Communication module;Core electricity consumption module;And The Switching Power Supply power supply circuit of above-described embodiment description;The output module of Switching Power Supply power supply circuit is respectively connected to communication module With core electricity consumption module, for the input power of industrial gateway system to be isolated with out-put supply, and by communication module and core Electricity consumption module is isolated.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair Various modifications and variations can be made in the case of bright spirit and scope, and such modifications and variations are each fallen within by appended claims Within limited range.

Claims (10)

1. a kind of switching power circuit, which is characterized in that including:
Switch power module, for the power supply of access to be converted to high frequency electric source;
Voltage isolation module, the input terminal of the voltage isolation module are connect with the switch power module;The voltage isolation Module includes multiple output terminals, electrical isolation between multiple output terminals of the voltage isolation module.
2. switching power circuit as described in claim 1, which is characterized in that the voltage isolation module is isolating transformer.
3. switching power circuit as claimed in claim 2, which is characterized in that the isolating transformer includes:
Primary side main winding, one end of the primary side main winding connects with the power supply accessed, the other end of the primary side main winding and The output terminal connection of the switch power module;
At least one primary side auxiliary winding, one end of the primary side auxiliary winding are inputted with the high level of the switch power module End;
Multiple vice-side windings, electrical isolation between the multiple vice-side winding.
4. switching power circuit as described in claim 1, which is characterized in that the switch power module includes:
Switch controller of power supply, the input terminal of the switch controller of power supply are connect with the power supply accessed;
Controllable switch, the control terminal of the controllable switch are connect with the output terminal of the power supply changeover device, the controllable switch Output terminal is connect with the input terminal of the voltage isolation module.
5. switching power circuit as claimed in claim 4, which is characterized in that the switch power module includes:It is described controllable Switch as metal-oxide-semiconductor, the grid of the metal-oxide-semiconductor is connect with the output terminal of the power supply changeover device, the grid of the metal-oxide-semiconductor with it is described The input terminal connection of voltage isolation module, the source electrode of the metal-oxide-semiconductor and the current detecting end of switch power module connect.
6. switching power circuit as described in claim 1, which is characterized in that further include:
Multiple rectifying and wave-filtering output modules, respectively multiple output terminals with the voltage isolation module connect, for voltage every Rectifying and wave-filtering is carried out from module output voltage.
7. switching power circuit as described in claim 1, which is characterized in that further include:Rectifying and wave-filtering input module, is arranged on The input terminal of the switch power module, for carrying out rectifying and wave-filtering to the power supply of the access.
8. switching power circuit as claimed in claim 6, which is characterized in that further include:Feedback module, the feedback module One end is connect with the output terminal of at least one rectifying and wave-filtering output module, the other end and Switching Power Supply of the feedback module The feedback end connection of module.
9. switching power circuit as claimed in claim 8, which is characterized in that the feedback module includes optical coupling isolation circuit, It is arranged between the output terminal of the feedback module and the feedback end of the switch power module.
10. a kind of industrial gateway system, which is characterized in that including:
Communication module;
Core electricity consumption module;
And
Switching Power Supply power supply circuit as described in any one of claims 1-9;
The output module of the Switching Power Supply power supply circuit is respectively connected to the communication module and the core electricity consumption module, uses It is isolated in by the input power of industrial gateway system with out-put supply, and by the communication module and the core electricity consumption mould Block is isolated.
CN201711499490.4A 2017-12-29 2017-12-29 Switching power circuit and industrial gateway system Pending CN108173432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711499490.4A CN108173432A (en) 2017-12-29 2017-12-29 Switching power circuit and industrial gateway system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711499490.4A CN108173432A (en) 2017-12-29 2017-12-29 Switching power circuit and industrial gateway system

Publications (1)

Publication Number Publication Date
CN108173432A true CN108173432A (en) 2018-06-15

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CN201711499490.4A Pending CN108173432A (en) 2017-12-29 2017-12-29 Switching power circuit and industrial gateway system

Country Status (1)

Country Link
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204361923U (en) * 2014-12-23 2015-05-27 淄博山大奥太电气有限公司 With the Switching Power Supply of Multiple isolated outputs
CN205142040U (en) * 2015-12-02 2016-04-06 珠海格力电器股份有限公司 Power supply circuit isolated system
CN106059309A (en) * 2016-06-16 2016-10-26 国网山东省电力公司威海供电公司 Output circuit of two-way switch power supply
CN106130370A (en) * 2016-08-22 2016-11-16 武汉盛帆电子股份有限公司 Communicator copied by Switching Power Supply and electrical isolation method, multilist collection
CN106685211A (en) * 2016-08-22 2017-05-17 武汉盛帆电子股份有限公司 Switching power supply, electrical isolation method and ammeter
CN107294393A (en) * 2017-05-23 2017-10-24 楚雄医药高等专科学校 A kind of low cost and high reliability Yi nationality medicine production isolation type switch power

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204361923U (en) * 2014-12-23 2015-05-27 淄博山大奥太电气有限公司 With the Switching Power Supply of Multiple isolated outputs
CN205142040U (en) * 2015-12-02 2016-04-06 珠海格力电器股份有限公司 Power supply circuit isolated system
CN106059309A (en) * 2016-06-16 2016-10-26 国网山东省电力公司威海供电公司 Output circuit of two-way switch power supply
CN106130370A (en) * 2016-08-22 2016-11-16 武汉盛帆电子股份有限公司 Communicator copied by Switching Power Supply and electrical isolation method, multilist collection
CN106685211A (en) * 2016-08-22 2017-05-17 武汉盛帆电子股份有限公司 Switching power supply, electrical isolation method and ammeter
CN107294393A (en) * 2017-05-23 2017-10-24 楚雄医药高等专科学校 A kind of low cost and high reliability Yi nationality medicine production isolation type switch power

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Application publication date: 20180615

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