CN201656766U - Low-E high-voltage input module power supply - Google Patents
Low-E high-voltage input module power supply Download PDFInfo
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- CN201656766U CN201656766U CN2010201481608U CN201020148160U CN201656766U CN 201656766 U CN201656766 U CN 201656766U CN 2010201481608 U CN2010201481608 U CN 2010201481608U CN 201020148160 U CN201020148160 U CN 201020148160U CN 201656766 U CN201656766 U CN 201656766U
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Abstract
The utility model relates to a low-E high-voltage input module power supply. The low-E high-voltage input module power supply comprises a switch power supply circuit and an insulation housing, wherein a mental shielding can and two shielding plates are arranged on the inner layer of the insulation housing; the switch power supply circuit is arranged inside a shielding layer formed by the metal shielding can and the shielding plates and can penetrate shielding contact points on the shielding plates to extend outwards through pins of connecting wires; small holes and big holes are formed on the shielding plates; one side of the shielding plate adopts an insulated side, the other side thereof adopts a conductive copper thin film, and the insulated side is arranged inwards; and the mental shielding can adopts thin steel plate or other conductive electromagnetic shielding materials. The utility model has the benefits that the entire volume is small; the insulation property and pressure resistance are good; fire resistant, insulated, and high-temperature resistant plastics are adopted to ensure the external insulation degree; and the installation of the switch power supply circuit inside a shielding box can not only reduce the electromagnetic radiation to the exterior, but also enhance the capacity of resisting electromagnetic interference of the exterior of the switch power supply circuit to the interior thereof.
Description
Technical field
The utility model relates to a kind of low radiation high pressure input module power supply.
Background technology
Along with the general requirement that national intelligent grid is built, national grid has been put into effect the series standard of intelligent electric meter series and power consumer power information acquisition system respectively, and traditional power supply can not satisfy the demand of new standard fully.For this reason, domestic Switching Power Supply factory begins that to provide Switching Power Supply to carry out supporting for ammeter and terminal.
The alternating current input power supplying rated voltage that ammeter and terminal are used is 220V/380V or 57.7V/100V, when earth fault occurring, can produce the nominal voltage up to 1.9 times, and input voltage can reach AC420V, and direct voltage can be up to about 600V after the rectification.Ammeter and terminal inner need the multichannel low-tension supply respectively for metering, collection, communicate by letter and use such as remote signalling, the dielectric voltage withstand between them requires high.Switching Power Supply is to be up to the DC power supply of 600V, through switch change-over, converts low-voltage power supply table and terminal to and uses, and can produce electromagnetic radiation, can have influence on metering and communicate by letter when serious.Owing to be that new product uses, present existing power supply factory adopts open mode design ammeter or terminal Switching Power Supply mostly, and this power volume is big, owing to requirement of withstand voltage is arranged, can not carry out metallic shield, and electromagnetic radiation is stronger.In order to solve volume and problem of withstand voltage, domestic occurred with plastic casing switching power circuit is carried out embedding, but still do not solve electromagnetic radiation.
Summary of the invention
The utility model proposes a kind of low radiation high pressure input module power supply, the electromagnetic radiation in the time of will solving Switching Power Supply exactly and use by force, not withstand voltage and bulky technical problem.
The utility model solves the problems referred to above by following technical proposals: a kind of low radiation high pressure input module power supply, comprise switching power circuit and insulation crust, and described insulation crust internal layer is established metallic shield and barricade; Described pass power circuit is built in the screen that is made of metallic shield and barricade, and switching power circuit is outwards drawn by the shielding contact that the wiring pin passes on the barricade.
Described barricade is provided with aperture and macropore, and the one side of barricade is an insulating surfaces, and another side is the copper film of conduction, and insulating surfaces wherein inwardly; Described metallic shield is the electromagnetic shielding material of sheet metal or other conductions.
Between described metallic shield and the switching power circuit, between the lead-in wire of switching power circuit and the barricade and switching power circuit inside all is equipped with insulation filler.
Described switch power supply route input circuit, translation circuit, output circuit and control circuit are formed.
The utility model overall volume is little, and insulation resistance is good, and insulation crust adopts the fire retardant insulating high-temperature resistance plastice, guaranteed inside and outside insulativity, switching power circuit had both reduced external electromagnetic radiation in shielding box, also increased the anti-outside electromagnetic interference to inside of switching power circuit simultaneously.
Description of drawings
Fig. 1 is a decomposition texture schematic diagram of the present utility model;
Fig. 2 is a switching power circuit structured flowchart of the present utility model.
Among the figure: 1. insulation crust, 2. metallic shield, 3. switching power circuit, 4. barricade, 5. pin, 3-1. input circuit, 3-2. translation circuit, 3-3. output circuit, 3-3,3-4. control circuit.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model hangs down radiation high pressure input module power supply, comprises insulation crust 1, places the uncovered metallic shield 2 in the upper end of insulation crust 1 inside, is installed in switching power circuit 3 and barricade 4 in the metallic shield 2; Wherein, the shielding contact that passes on the barricade 4 of the pin that is used for wiring 5 of switching power circuit 3 is upwards drawn; Insulation crust 1 adopts the fire retardant insulating high-temperature resistance plastice, to guarantee inside and outside insulativity, forms the shape and the size of product behind mould molding; The I/O lead-in wire that barricade 4 will shield contact and switching power circuit 3 picks out, and guaranteeing withstand voltage between input, output and the shielded lead, simultaneously electromagnetic shielding is carried out in the bottom of switching power circuit 3.Described barricade is provided with aperture and macropore.Macropore is used for the embedding insulating material, improves insulativity, and aperture is used to breathe freely.The one side of barricade is an insulating surfaces, and another side is the copper film of conduction, and insulating surfaces wherein inwardly; Described metallic shield is the electromagnetic shielding material of sheet metal or other conductions.
Described metallic shield 2 can be received on the output pin of switching power circuit 3 by the tie point on switching power circuit 3 circuit boards; Metallic shield 2 is processed according to the inside dimension of shell, guarantees certain thickness, when playing electromagnetic shielding action, is dispelled the heat in the outside.
The pin that is used for wiring 5 of described switching power circuit 3 passes the loam cake of insulation crust 1 and draws outside shell.
Between described metallic shield 2 and the switching power circuit 3, between the lead-in wire of switching power circuit 3 and the barricade 4 and between switching power circuit 3 inside insulation filler is housed all; This insulation filler, guaranteed the dielectric voltage withstand between the switching power circuit inside, meet design requirement, as the lead-in wire of the dielectric voltage withstand between metallic shield 2 and the switching power circuit 3, switching power circuit 3 and the dielectric voltage withstand between dielectric voltage withstand between the barricade 4 and switching power circuit 3 inside.
The shape of described metallic shield 2 is identical with the shape of insulation crust 1, can be cuboid, and its undersized is in the size of insulation crust 1.Switching power circuit 3 is when design, and the tie point between reservation and the metallic shield 2 is received metallic shield 2 on the output pin; To shield simultaneously on the barricade 4 and a little receive on this pin; This pin is the bonding pin.After connecting like this, can guarantee that switching power circuit 3 in six shielding boxs, had both reduced external electromagnetic radiation, also increase switching power circuit 3 anti-outside electromagnetic interference simultaneously inside.
Fig. 2 is a switching power circuit structured flowchart of the present utility model, and switch power supply route input circuit 3-1, translation circuit 3-2, output circuit 3-3 and control circuit 3-4 form.
Switching Power Supply adopts power semiconductor as switch element exactly, and by the periodicity on-off switch, the duty of control switch element is recently adjusted output voltage.The formation block diagram of Switching Power Supply as shown in Figure 2.Substantially form by input circuit, translation circuit, output circuit and control circuit etc.Input circuit comprises line filter, and surge current suppression circuit and rectification circuit become direct current to input AC, by capacitor filtering, obtain metastable voltage, use for translation circuit.Power conversion circuit is its core, mainly is made up of switching circuit and high frequency transformer, and the periodicity break-make of power controlling semiconductor device passes to energy secondary through high frequency transformer; This also is the peak signal source that produces electromagnetic radiation.Output circuit is that the secondary square-wave voltage of high frequency transformer is rectified into unidirectional pulsating direct current, and it is smoothed to the low ripple direct voltage of designing requirement.The main effect of control circuit is to detect amplitude of output voltage, provides rectangular pulse train to drive circuit, thereby the width of control impuls reaches the purpose that changes output voltage.
Claims (4)
1. one kind low radiation high pressure input module power supply comprises switching power circuit (3) and insulation crust (1), it is characterized in that described insulation crust (1) internal layer establishes metallic shield (2) and barricade (4); Described switching power circuit (3) is built in the screen that is made of metallic shield (2) and barricade (4), and switching power circuit (3) is outwards drawn by the shielding contact that wiring pin (5) passes on the barricade (4).
2. low radiation high pressure input module power supply according to claim 1 is characterized in that described barricade (4) is provided with aperture and macropore, and the one side of barricade (4) is an insulating surfaces, and another side is the copper film of conduction, and insulating surfaces wherein inwardly; Described metallic shield (2) is the electromagnetic shielding material of sheet metal or other conductions.
3. low radiation high pressure input module power supply according to claim 1 is characterized in that between described metallic shield (2) and the switching power circuit (3), between the lead-in wire of switching power circuit (3) and the barricade (4) and switching power circuit (3) inside all is equipped with insulation filler.
4. according to each described low radiation high pressure input module power supply of claim 1-3, it is characterized in that described switch power supply route input circuit, translation circuit, output circuit and control circuit composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201481608U CN201656766U (en) | 2010-03-30 | 2010-03-30 | Low-E high-voltage input module power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201481608U CN201656766U (en) | 2010-03-30 | 2010-03-30 | Low-E high-voltage input module power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656766U true CN201656766U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201481608U Expired - Fee Related CN201656766U (en) | 2010-03-30 | 2010-03-30 | Low-E high-voltage input module power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN201656766U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986543A (en) * | 2010-12-01 | 2011-03-16 | 威海东兴电子有限公司 | Electromagnetic conduction and radiation shielding device for switching power supply |
| CN102130609A (en) * | 2011-03-10 | 2011-07-20 | 中国电力科学研究院 | Method for realizing insulation coordination of basic functional units of voltage source converter (VSC) based on half bridge circuit |
| CN102790522A (en) * | 2012-08-02 | 2012-11-21 | 西安华伟自控设备有限公司 | Realization method for high interference immunity power supply |
| CN103812346A (en) * | 2012-11-12 | 2014-05-21 | 苏州工业园区新宏博通讯科技有限公司 | Super-high voltage input switch power source module |
| CN104470310A (en) * | 2014-12-04 | 2015-03-25 | 天水华天微电子股份有限公司 | Switching power supply lead structure and switching power supply lead assembly method |
| CN112425056A (en) * | 2018-06-08 | 2021-02-26 | 法雷奥电机设备公司 | Electrical circuit, switching arm and voltage converter |
-
2010
- 2010-03-30 CN CN2010201481608U patent/CN201656766U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986543A (en) * | 2010-12-01 | 2011-03-16 | 威海东兴电子有限公司 | Electromagnetic conduction and radiation shielding device for switching power supply |
| CN102130609A (en) * | 2011-03-10 | 2011-07-20 | 中国电力科学研究院 | Method for realizing insulation coordination of basic functional units of voltage source converter (VSC) based on half bridge circuit |
| CN102130609B (en) * | 2011-03-10 | 2014-12-17 | 中国电力科学研究院 | Method for realizing insulation coordination of basic functional units of voltage source converter (VSC) based on half bridge circuit |
| CN102790522A (en) * | 2012-08-02 | 2012-11-21 | 西安华伟自控设备有限公司 | Realization method for high interference immunity power supply |
| CN103812346A (en) * | 2012-11-12 | 2014-05-21 | 苏州工业园区新宏博通讯科技有限公司 | Super-high voltage input switch power source module |
| CN104470310A (en) * | 2014-12-04 | 2015-03-25 | 天水华天微电子股份有限公司 | Switching power supply lead structure and switching power supply lead assembly method |
| CN104470310B (en) * | 2014-12-04 | 2017-07-28 | 天水华天微电子股份有限公司 | The assembly method of Switching Power Supply pin configuration and Switching Power Supply lead |
| CN112425056A (en) * | 2018-06-08 | 2021-02-26 | 法雷奥电机设备公司 | Electrical circuit, switching arm and voltage converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20101124 Termination date: 20190330 |