CN203734510U - Power module - Google Patents
Power module Download PDFInfo
- Publication number
- CN203734510U CN203734510U CN201320889214.XU CN201320889214U CN203734510U CN 203734510 U CN203734510 U CN 203734510U CN 201320889214 U CN201320889214 U CN 201320889214U CN 203734510 U CN203734510 U CN 203734510U
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- CN
- China
- Prior art keywords
- power module
- wiring board
- circuit
- power
- filter circuit
- 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.)
- Expired - Lifetime
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- 238000009434 installation Methods 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Abstract
The utility model discloses a power module, comprising a housing in a cuboid structure and a circuit board disposed in the housing. The circuit board is arranged with a surge protection circuit, a soft start circuit, an input filter circuit, a conversion circuit, and an output filter circuit which are electrically connected in sequence. At least a side of two sides of the housing is provided with a plurality of bulges arranged at interval in an up and down manner. A side of the circuit board is inserted between the upper bulge and the lower bulge. The distance from the lower bulge to the bottom surface of the housing is determined by preset installation height of the circuit board. The circuit board is provided with holes permitting an electrolytic condenser main body portion disposed on the circuit board and a transformer main body portion to pass through. The power module is not only good in performance, but also small in size.
Description
Technical field
The utility model relates to a kind of power module, belongs to power technique fields.
Background technology
Power module is the requisite composition module of network communication equipment, along with improving constantly of network communication equipment degree of integration, on network communication equipment, the usage quantity of various modules constantly increases, this not only shows that the area of leaving power port when outside port increases for reduces, but also the installing space that main manifestations is network communication equipment inside leaves power module for after installing miscellaneous service module reduces, this is especially obvious in small size network communication equipment, for example, under the area of half U cabinet, for realizing the pluggable demand of duplicate supply, area and the installing space of leaving single power supply for are all very little, this Power Management Design that is small size high reliability has proposed a problem demanding prompt solution.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of power module, and it is not only functional but also volume is little.
For this reason, the utility model provides a kind of power module, comprise: the shell of rectangular structure and the wiring board that is arranged on enclosure, the surging protection circuit, soft-start circuit, input filter circuit, change-over circuit and the output filter circuit that on described wiring board, are furnished with order electrical connection, at least one side of described shell both sides is provided with some upper and lower spaced apart projections; Described wiring board one side is inserted between described upper process and lower process, and the distance of described lower process distance described shell bottom surface is determined by the default setting height(from bottom) of wiring board; Described wiring board is provided with the perforate of allowing that on it, set electrolytic capacitor main part and set transformer body part are passed.
Further, described shell both sides are provided with contour some upper and lower spaced apart projection.
Further, described upper and lower spaced apart projection is arranged vertically in pairs.
Further, a side of described shell is provided with some upper and lower spaced apart projections, and described shell bottom surface is provided with installation double-screw bolt, and a side of described wiring board is provided with the through hole mating with described installation double-screw bolt.
Further, described electrolytic capacitor main part is passed perforate at diameter place.
Further, described transformer is not provided with skeleton.
Further, described shell is can, and the power device arranging on described wiring board contacts with the inwall of described shell through heat conductive silica gel.
Further, described surging protection circuit comprises: the first piezo-resistance being connected with input power cord respectively and the second piezo-resistance and the discharge tube that between an input power cord and power protection ground, are connected in series.
Further, described input filter circuit comprises: the EMC filter circuit of two-stage series connection, and be arranged on the electric capacity between described EMC circuit and power protection ground; Wherein, described EMC filter circuit comprises: common mode choke and be connected in parallel on the electric capacity between common mode choke.
Further, described output filter circuit comprises common mode inductance, and the common mode inductance differential mode inductance of connecting and be arranged on two electric capacity between inductance at the input and output side of common mode inductance.
Compared with prior art, there is following remarkable advantage in the utility model:
(1) power module the utility model proposes utilizes general-purpose device, realizes small size design by the improvement of structure, and without any small size element of customization, cost is low;
(2) power module the utility model proposes utilizes the direct heat loss through conduction of shell, does not need to increase fan and realizes wind-cooling heat dissipating, not only makes small volume, and the fan-free noise that may bring;
(3) power module the utility model proposes improves design for custom circuit, still can meet the reliability requirement of power supply when the former device of minimizing reduces the cost.
Brief description of the drawings
Fig. 1 is the perspective exploded view of the power module of the utility model embodiment;
Fig. 2 is the circuit theory diagrams of the power module of the utility model embodiment.
Embodiment
Owing to conventionally need to being provided with in the circuit board the device such as electric capacity, transformer that volume is larger in power module, and wiring board all must be connected with the shell of power module by double-screw bolt is installed, therefore, contact for avoiding shell directly with components and parts, obstruction property to occur, the height of power module is greater than diameter length (or in the time that transformer height is larger, being transformer height) sum that the height of double-screw bolt and the electrolytic capacitor of diameter maximum are installed conventionally; Be set to homonymy even if work as electrolytic capacitor and transformer and installation double-screw bolt, for avoiding the components and parts that the opposite side of wiring board is arranged to contact with shell generation obstruction property, now the minimum constructive height of power module also at least needs to be greater than the height of double-screw bolt (now double-screw bolt height is greater than the diameter length of the electrolytic capacitor of diameter maximum, or in the time that transformer height is larger, be greater than transformer height) prevent with opposite side surplus height (that is: resistance impenetrability contact height) the value sum that obstruction property contacts.The technical solution of the utility model allows that by being provided with at wiring board perforate that on it, set electrolytic capacitor main part/transformer body part is passed reduces the height of power module as far as possible, be aided with improved circuit board installation method simultaneously, reduce power module volume.For making the utility model easy to understand more, below with reference to the drawings and specific embodiments, the utility model is done to introduce further, but not as to restriction of the present utility model.
Described in Fig. 1, be a kind of perspective exploded view of power module, comprising: shell 1, wiring board 2, electrolytic capacitor 3, transformer 4, power device (not shown), other components and parts 5 and several installation double-screw bolts 6, wherein,
Described shell 1 is two members that cross section is L-type structure, is respectively base and lid, can form the shell of a rectangular structure after both assemblings; The sidewall below of described base is provided with some upper and lower spaced apart kicks, perpendicular separation between described upper lower process allows wiring board be inserted through and play a supportive role in one side, and described lower projection is determined by the wiring board setting height(from bottom) pre-seting apart from the distance of the bottom surface of base; Preferably, described upper and lower spaced apart kick can be arranged vertically in pairs, so that wiring board stress balance better; On the other hand, because power module is less, upper lower process is to can only arranging two pairs;
Described wiring board 2 is designed according to realizing business need, on it, ad-hoc location can be provided with as required with the circuit of described wiring board and form the welding hole being electrically connected, on described welding hole, be provided with corresponding connector or components and parts, and described connector or components and parts are dodged the projection for supporting of arranging on described shell; Described wiring board 2 is provided with electrolytic capacitor 3 and transformer 4, and its correspondence position is furnished with perforate, bore size respectively with the main part full-size adaptation of capacitor 3 and transformer 4, to allow it to pass through.Exemplary, for electrolytic capacitor 3, can be to allow as shown in Figure 1 its longitudinal axis cross section to pass through; For transformer 4, can be to allow as shown in Figure 1 its body cross-section to pass through; And electrolytic capacitor 3 and transformer 4 are in the according to circumstances reasonable Arrangement of height of wiring board 2 both sides.On wiring board 2, be also provided with power device and other components and parts 5 according to circuit arrangement, on the opposite side of wiring board, be provided with several (being generally 2) through holes, be fixed on the base of shell 1 by double-screw bolt 6 is installed.
Visible, pass through said structure, the height of power module can be restricted to: the height of double-screw bolt and the resistance impenetrability contact height of opposite side are installed, but now, the height that double-screw bolt is installed is obviously less than the diameter length of the electrolytic capacitor of diameter maximum, or in the time that transformer height is larger, is less than transformer height, by this kind of setting, obviously can reduce the height of power module.And, wiring board one side supports by fixed projection after insertion, opposite side adopts double-screw bolt to support, on the wiring board of fixed projection support place correspondence position, still can carry out line arrangement, and must be that circuit is also dodged due to needs perforate while supporting unlike double-screw bolt, this also can further reduce the area of wiring board effectively, thereby further reduces the size of power module.
Preferably, for power device set on wiring board 2 can be dispelled the heat well, can make shell 1 with metal material, and the radiating surface of power device by thermal conductive insulator (for example can be arranged as, heat conductive silica gel) directly contact with shell 1, preferably, contact completely.This structural configuration can realize by the welding of Modulating Power device or installation site.Thus, in use power device not only insulate with shell 1, and the heat that power device produces directly effectively discharges by the shell 1 of metal material, and do not need to increase in addition radiating element, reduced further thus the volume of power module.
Preferably, the transformer 4 in the utility model embodiment can be selected the transformer that is not provided with skeleton, thereby further reduces the volume of power module.
Structure for above-mentioned power module also can adopt other form, for example, base in shell has relative two sides, and be provided with the fixed projection for supporting two sides, and supporting studs is not set, although this kind of structure also can install and make power module volume further to reduce, the stability of installing for wiring board is not so good as a side and fixes with double-screw bolt.
In embodiment of the present utility model, in order to make power module small volume, not only structurally improve, also circuit design is improved, preferably supply electrical properties thereby realized small size power module.As shown in Figure 2, on described wiring board, be furnished with surging protection circuit, soft-start circuit, input filter circuit, change-over circuit and the output filter circuit of order electrical connection, wherein:
Described surging protection circuit object is the surge voltage (electric current) that inhibition is invaded by input port, protection input port, comprise: the first piezo-resistance RV1 that two ends are connected with input power cord respectively, and the second piezo-resistance RV2 and the discharge tube G1 that between an input power cord and power protection ground, are connected in series, outside input power absorbs differential mode (between two supply lines) surge voltage by the first piezo-resistance RV1, by the first piezo-resistance RV1, the second piezo-resistance RV2 and discharge tube G1 absorb common mode (two supply lines are between protection ground) surge voltage, when surge voltage enters surging protection circuit, reach the first piezo-resistance RV1, after the starting resistor of the second piezo-resistance RV2 and discharge tube, voltage can be clamped at the scope that late-class circuit can bear, protection late-class circuit can not damage.In this circuit, preferably, the first piezo-resistance and the second piezo-resistance are all selected the piezo-resistance of 560V/4500A, discharge tube is selected the discharge tube of 600V/5000A, can realize differential mode 6kV, common mode 6kV carrying out surge protection ability, this is different from prior art needs to arrange at least three piezo-resistances for realizing this carrying out surge protection ability, reduce number of elements on wiring board, further, in the time arranging the first piezo-resistance and the second piezo-resistance, can adopt stacking placement, make two piezo-resistances only take the area of a conventional piezo-resistance, further dwindle thus the space that described protection circuit takies.
When described soft-start circuit object is to prevent from powering on, input current is excessive, and it can adopt and go out as shown in Figure 2 thermistor RT1 and realize, and also can adopt in prior art, to realize slow other technical scheme starting of power supply and realize.
Described input filter circuit object is: (1) to outside input power filtering interfering, prevent that external disturbance from causing power module operation irregularity; (2) carry out filtering for the interference of rear class power-switching circuit and rear class load generation, reduce the interference to external power source, prevent from occurring because the work of this equipment causes the situation of other equipment operation irregularities that are connected to same power supply.Described input filter circuit comprises: the EMC filter circuit of two-stage series connection, and capacitor C 3 between described EMC circuit and power protection ground.Described EMC filter circuit comprises: common mode choke L1, L2 and be connected in parallel on capacitor C 1, the C2 between common mode choke.Because common mode choke L1, L2 are high-impedance state, inwardly suppress High-frequency Interference and outwards conduction.And capacitor C 1, C2 are low resistance state, High-frequency Interference can be absorbed, thereby realize the filtering to High-frequency Interference.Utilize this input filter circuit can save X electric capacity and the Y electric capacity in custom circuit, arranged for meeting safety needs, not only reduced wiring board requisite space and also reduced wiring difficulty.
Described change-over circuit object is to realize the conversion of input and output voltage, and it can adopt circuit as shown in Figure 2 to realize, and also can adopt DC/DC module, chip or the circuit of any suitable form in prior art to realize.
The object of described output filter circuit is high frequency common mode and the differential mode interference that the load of filtering rear class produces, reduce Ripple Noise, it comprises: common mode inductance L3, and the differential mode inductance L4 that connects of common mode inductance L 3 and be arranged on two electric capacity E3, E4 between inductance at the input and output side of common mode inductance L3.This circuit is not only provided with differential mode inductance with respect to custom circuit of the prior art and is also provided with common mode inductance, can not only eliminate differential mode noise and can also eliminate common-mode noise, can effectively improve power supply output performance.
Visible, in the utility model embodiment, that on wiring board, arranges is connected in series can equipment being provided and be improved preferably for electrical properties of the circuit that forms by surging protection circuit, soft-start circuit, input filter circuit, change-over circuit and output filter circuit, and reduce as much as possible component number by rational layout in circuit design, adjust components and parts layout, make can effectively reduce wiring board design area in meeting circuit performance demand, on the other hand, for the overall volume of power module reduces the design that provides useful.
To sum up, embodiment of the present utility model has following remarkable advantage:
(1) power module the utility model proposes utilizes general-purpose device, realizes small size design by the improvement of structure, and without any small size element of customization, cost is low;
(2) power module the utility model proposes utilizes the direct heat loss through conduction of shell, does not need to increase fan and realizes wind-cooling heat dissipating, not only makes small volume, and the fan-free noise that may bring;
(3) power module the utility model proposes improves design for custom circuit, still can meet the reliability requirement of power supply when the former device of minimizing reduces the cost.
Should be understood that; concerning the those of ordinary skill in field, the utility model technology place; can be equal to accordingly change or replace according to the technical solution of the utility model and design thereof; and all these changes or replacement all should belong to the protection range of the utility model claims.
Claims (11)
1. a power module, comprise: the shell of rectangular structure and the wiring board that is arranged on enclosure, the surging protection circuit, soft-start circuit, input filter circuit, change-over circuit and the output filter circuit that on described wiring board, are furnished with order electrical connection, is characterized in that
At least one side of described shell both sides is provided with some upper and lower spaced apart projections; Described wiring board one side is inserted between described upper process and lower process, and the distance of described lower process distance described shell bottom surface is determined by the default setting height(from bottom) of wiring board;
Described wiring board is provided with the perforate of allowing that on it, set electrolytic capacitor main part and set transformer body part are passed.
2. power module as claimed in claim 1, is characterized in that, described shell both sides are provided with contour some upper and lower spaced apart projection.
3. power module as claimed in claim 1, is characterized in that, described upper and lower spaced apart projection is arranged vertically in pairs.
4. power module as claimed in claim 1, is characterized in that, a side of described shell is provided with some upper and lower spaced apart projections, and described shell bottom surface is provided with installation double-screw bolt, and a side of described wiring board is provided with the through hole mating with described installation double-screw bolt.
5. power module as claimed in claim 1, is characterized in that, described electrolytic capacitor main part is passed perforate at diameter place.
6. power module as claimed in claim 1, is characterized in that, described transformer is not provided with skeleton.
7. power module as claimed in claim 1, is characterized in that, described shell is can, and the power device arranging on described wiring board contacts with the inwall of described shell through heat conductive silica gel.
8. power module as claimed in claim 1; it is characterized in that, described surging protection circuit comprises: the first piezo-resistance being connected with input power cord respectively and the second piezo-resistance and the discharge tube that between an input power cord and power protection ground, are connected in series.
9. power module as claimed in claim 1, is characterized in that, described input filter circuit comprises: the EMC filter circuit of two-stage series connection, and be arranged on the electric capacity between described EMC circuit and power protection ground.
10. power module as claimed in claim 9, is characterized in that, described EMC filter circuit comprises: common mode choke and be connected in parallel on the electric capacity between common mode choke.
11. power modules as claimed in claim 1, is characterized in that, described output filter circuit comprises common mode inductance, and the common mode inductance differential mode inductance of connecting and be arranged on two electric capacity between inductance at the input and output side of common mode inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889214.XU CN203734510U (en) | 2013-12-31 | 2013-12-31 | Power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889214.XU CN203734510U (en) | 2013-12-31 | 2013-12-31 | Power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203734510U true CN203734510U (en) | 2014-07-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320889214.XU Expired - Lifetime CN203734510U (en) | 2013-12-31 | 2013-12-31 | Power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203734510U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470337A (en) * | 2014-12-19 | 2015-03-25 | 苏州翊宣电子有限公司 | Heat radiation power module |
| CN109892026A (en) * | 2017-04-24 | 2019-06-14 | 深圳市大疆创新科技有限公司 | Electron speed regulator and unmanned plane |
| CN111181359A (en) * | 2020-02-27 | 2020-05-19 | 北京交大思诺科技股份有限公司 | Novel LKJ power plug-in |
| WO2021088253A1 (en) * | 2019-11-04 | 2021-05-14 | 海信视像科技股份有限公司 | Display device |
-
2013
- 2013-12-31 CN CN201320889214.XU patent/CN203734510U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470337A (en) * | 2014-12-19 | 2015-03-25 | 苏州翊宣电子有限公司 | Heat radiation power module |
| CN109892026A (en) * | 2017-04-24 | 2019-06-14 | 深圳市大疆创新科技有限公司 | Electron speed regulator and unmanned plane |
| WO2021088253A1 (en) * | 2019-11-04 | 2021-05-14 | 海信视像科技股份有限公司 | Display device |
| CN111181359A (en) * | 2020-02-27 | 2020-05-19 | 北京交大思诺科技股份有限公司 | Novel LKJ power plug-in |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |