CN205430885U - Novel DC power supply's anti interference shielding structure of high frequency electric way module - Google Patents
Novel DC power supply's anti interference shielding structure of high frequency electric way module Download PDFInfo
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- CN205430885U CN205430885U CN201620211376.1U CN201620211376U CN205430885U CN 205430885 U CN205430885 U CN 205430885U CN 201620211376 U CN201620211376 U CN 201620211376U CN 205430885 U CN205430885 U CN 205430885U
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Abstract
The utility model provides a can prevent effectively that the inside high frequency electric way module of product from to the noiseproof feature of outside manufacture, improving the use load circuit's of feeder ear stability, guarantee that the vehicle is expert at to sail the novel DC power supply's anti interference shielding structure of high frequency electric way module of the security of in -process. It includes main printed circuit PCB board, main printed circuit PCB board the fourth layer for the shielding bottom, main printed circuit PCB board on still be equipped with the shield cover, main printed circuit PCB board on be equipped with the jack, be equipped with on the shield cover and participate in, the shield cover is pegged graft in the jack through participating in, high frequency boost circuit structure or high frequency buck circuit structure by whole shieldings within the shielding space that shield cover and shielding bottom formed.
Description
Technical field
This utility model relates to the DC source field of electronic product, particularly relates to the anti-interference shielding construction of RF circuit module of a kind of Novel DC power supply.
Background technology
nullThe most common traditional DC source，Buck is had as in circuit、The topological power of the forms such as Boost，This form of power source operating frequency is all operate on altofrequency state，But EMC interference is also the biggest，Generally in domestic power supply, bulky layout type can increase multiple-stage filtering mode and reduce the interference of EMC in port，If but in the occasion of the first-class high requirement of automobile，It is directed to meet to electromotor on off control unit at vehicle-mounted middle energy、Instrument、The parts such as radio cassette player are powered，The power supply product of power supply can not cause automobile to occur in the process of moving because of interference, and other vehicle-mounted part is interfered or signal is out of control，So on the premise of requiring that the DC source little capacity of resisting disturbance of power large volume is strong，Traditional electric source topology mode is difficult to realize the requirement that vehicle-mounted product is powered，Because the requirement of traditional DC source product vehicle power to be reached，Cost is relative with volume can be greatly increased，So the use requirement in the occasion that automobile industry etc. requires power high and volume is little can not be met.
In view of problem above, it is badly in need of at present wanting a kind of internal high frequency circuit module of product that can be effectively prevented to the noiseproof feature of outside manufacture, improve the stability using load circuit of feeder ear, it is ensured that the anti-interference shielding construction of RF circuit module of the Novel DC power supply of vehicle safety in the process of moving.
Utility model content
The technical problems to be solved in the utility model is, there is provided a kind of internal high frequency circuit module of product that can be effectively prevented to the noiseproof feature of outside manufacture, improve the stability using load circuit of feeder ear, it is ensured that the anti-interference shielding construction of RF circuit module of the Novel DC power supply of vehicle safety in the process of moving.
For solving above-mentioned technical problem, the technical scheme that this utility model provides is: the anti-interference shielding construction of RF circuit module of a kind of Novel DC power supply, it includes that main printed circuit pcb board, the main power circuit topology of described main printed circuit pcb board are high frequency Boost circuit structure or high frequency Buck circuit structure；Described main printed circuit pcb board is four laminates, the ground floor of main printed circuit pcb board i.e. top layer is for the positive pole layout of power circuit, ground floor is arranged that single screen layer encloses around high frequency Boost circuit structure or high frequency Buck circuit structure and is connected with bottom, but isolate with other circuit, make top layer form single shielding ring；The second layer of described main printed circuit pcb board is product power stratum, the second layer is arranged that single screen layer encloses around high frequency Boost circuit structure or high frequency Buck circuit structure and is connected with bottom, but isolate with other circuit, make stratum also form single shielding ring；The third layer of described main printed circuit pcb board is signal circuit key-course, around high frequency Boost circuit structure or high frequency Buck circuit structure, arrange that single screen layer encloses connect with bottom, but isolate with other circuit, make the single shielding ring that signals layer is also formed；The 4th layer of described main printed circuit pcb board is shielding bottom；Being additionally provided with radome on described main printed circuit pcb board, described main printed circuit pcb board is provided with jack, and radome is provided with pin, and radome is plugged in jack by pin；Described high frequency Boost circuit structure or high frequency Buck circuit structure are all shielded within the shielding space that radome and shielding bottom are formed.
As preferably, described radome is the rectangular structure that metal pyrite is made.
After using said structure, this utility model has the advantages that the high frequency part circuit module of Buck, Boost electric source topology in the product of non-metal shell can be shielded by this practicality by the RF circuit module anti-interference shielding construction layout system of Novel DC power supply, reduce the High-frequency Interference source of interiors of products to outside or the interference free performance of other products, it is substantially reduced the repeatedly filtering mode greatly and at high-frequency electrical terminal of the volume with conventional power source, reduces product cost loss.
In sum, this utility model provides a kind of internal high frequency circuit module of product that can be effectively prevented to the noiseproof feature of outside manufacture, improve the stability using load circuit of feeder ear, it is ensured that the anti-interference shielding construction of RF circuit module of the Novel DC power supply of vehicle safety in the process of moving.
Accompanying drawing explanation
Fig. 1 is the structural representation of the anti-interference shielding construction of the RF circuit module of Novel DC power supply in this utility model.
As shown in the figure: 1, main printed circuit pcb board, 2, radome, 3, shielding bottom, 4, jack, 5, pin.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail.
In conjunction with accompanying drawing 1, the anti-interference shielding construction of RF circuit module of a kind of Novel DC power supply, it includes that main printed circuit pcb board 1, the main power circuit topology of described main printed circuit pcb board 1 are high frequency Boost circuit structure or high frequency Buck circuit structure；Described main printed circuit pcb board 1 is four laminates, the ground floor of main printed circuit pcb board 1 i.e. top layer is for the positive pole layout of power circuit, ground floor is arranged that single screen layer encloses around high frequency Boost circuit structure or high frequency Buck circuit structure and is connected with bottom, but isolate with other circuit, make top layer form single shielding ring；The second layer of described main printed circuit pcb board 1 is product power stratum, the second layer is arranged that single screen layer encloses around high frequency Boost circuit structure or high frequency Buck circuit structure and is connected with bottom, but isolate with other circuit, make stratum also form single shielding ring；The third layer of described main printed circuit pcb board 1 is signal circuit key-course, around high frequency Boost circuit structure or high frequency Buck circuit structure, arrange that single screen layer encloses connect with bottom, but isolate with other circuit, make the single shielding ring that signals layer is also formed；The 4th layer of described main printed circuit pcb board 1 is shielding bottom 3；Being additionally provided with radome 2 on described main printed circuit pcb board 1, described main printed circuit pcb board 1 is provided with jack 4, and radome 2 is provided with pin 5, and radome 2 is plugged in jack 4 by pin 5；Described high frequency Boost circuit structure or high frequency Buck circuit structure are all shielded within the shielding space that radome 2 and shielding bottom 3 are formed.
As preferably, the rectangular structure that described radome 2 is made for metal pyrite.
In the specific implementation, including the screen layer layout modules in main printed circuit board and structure stand radome module, the anti-interference screen layer collectively constituted, such as little darkroom shielding mode in this practicality；Main printed circuit board bottom covers the one layer of Copper Foil screen layer as bottom, and make several welding hole around and can be connected with the structure stand radome module of upper cover, again the stratum in circuit is connected with whole screen layer, thus the high frequency Buck circuit in circuit or Boost circuit module are all shielded in this screen layer, thus it is substantially reduced the jamming performance that product is external, effectively play the anti-interference and effect of radiation.This utility model is on Shanghai Volkswagen NewLavada, NMSMP17SVP, the 200WDC-DCStart-stop manostat power supply of use and custom-designed, its main power circuit topology is Boost structure, and operating frequency is 300KHz.nullThe RF circuit module anti-interference shielding construction layout system of this utility model DC source，Use main printed circuit pcb board bottom copper a surname to serve as screen layer and merge, with radome, the screen layer that forms a whole，Its main printing PCB uses 4 layer process，PCB ground floor top layer Toplayer is applied to the positive pole layout of power circuit,Around high frequency Boost circuit module, arrange that single screen layer encloses connect with bottom，But isolate with other circuit，Top layer is made also to form single shielding ring，The PCB second layer is applied to product power stratum，Around high frequency Boost circuit module, arrange that single screen layer encloses connect with bottom，But with other ground circuit isolation，Finally engage with individually entering end at one，Stratum is made also to form single shielding ring，PCB third layer is applied to signal circuit key-course，Around high frequency Boost circuit module, arrange that single screen layer encloses connect with bottom，But isolate with other circuit，Make the single shielding ring that signals layer is also formed，The 4th layer of bottom Bottomlayer of PCB is applied to screen layer，Second layer high frequency power stratum uses single-point loop to connect with bottom screen layer，But other circuit stratum separates with Power Groud with being singly connected to input port，To avoid earth loop to disturb；Radome uses metal brass material to make, and makes size suitable with the module size of high-frequency circuit, covers with PCB bottom as copper character and play shielding action, can appropriately be wrapped up by interference circuit module；So the mode of shielding is to cover the broad screen layer as bottom of one layer of copper by the bottom of mainboard PCB, this layer is not connected with internal circuit characteristic, but connected with second layer Power Groud by surrounding via, it is connected with the metallic copper structure stand radome module of upper cover by several pad holes again around the screen layer of pcb board, high frequency Buck circuit in circuit or Boost circuit module are all shielded in this screen layer, thus by the interference shielding of the high-frequency power within screen layer in screen layer, interference is stoped to be transmitted to outside, effectively play the anti-interference and effect of radiation.In this example, 200WDC-DCStart-stop manostat power supply main power Boost circuit operating frequency is 300KHz, and the interference that can effectively reduce product with this shielding mode is delivered to outside, easily realizes the harassing and wrecking stoping internal interference source to outside, and advantage of lower cost.The EMC screened circuit that this is used for High-frequency Interference, as long as its structure is similar, function is identical, all in the protection domain of this patent, does not repeats them here.
Being described this utility model and embodiment thereof above, this description does not has restricted, and shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited thereto.If generally speaking those of ordinary skill in the art is enlightened by it, in the case of creating objective without departing from this utility model, design the frame mode similar to this technical scheme and embodiment without creative, protection domain of the present utility model all should be belonged to.
Claims (2)
1. the anti-interference shielding construction of the RF circuit module of a Novel DC power supply, it is characterized in that: it includes that main printed circuit pcb board (1), the main power circuit topology of described main printed circuit pcb board (1) are high frequency Boost circuit structure or high frequency Buck circuit structure；Described main printed circuit pcb board (1) is four laminates, the ground floor i.e. top layer of main printed circuit pcb board (1) is for the positive pole layout of power circuit, ground floor is arranged that single screen layer encloses around high frequency Boost circuit structure or high frequency Buck circuit structure and is connected with bottom, but isolate with other circuit, make top layer form single shielding ring；The second layer of described main printed circuit pcb board (1) is product power stratum, the second layer is arranged that single screen layer encloses around high frequency Boost circuit structure or high frequency Buck circuit structure and is connected with bottom, but isolate with other circuit, make stratum also form single shielding ring；The third layer of described main printed circuit pcb board (1) is signal circuit key-course, around high frequency Boost circuit structure or high frequency Buck circuit structure, arrange that single screen layer encloses connect with bottom, but isolate with other circuit, make the single shielding ring that signals layer is also formed；The 4th layer of described main printed circuit pcb board (1) is shielding bottom (3)；It is additionally provided with radome (2) on described main printed circuit pcb board (1), described main printed circuit pcb board (1) is provided with jack (4), radome (2) is provided with pin (5), and radome (2) is plugged in jack (4) by pin (5)；Described high frequency Boost circuit structure or high frequency Buck circuit structure are all shielded within the shielding space that radome (2) and shielding bottom (3) are formed.
The anti-interference shielding construction of RF circuit module of Novel DC power supply the most according to claim 1, it is characterised in that: described radome (2) is the rectangular structure that metal pyrite is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620211376.1U CN205430885U (en) | 2016-03-18 | 2016-03-18 | Novel DC power supply's anti interference shielding structure of high frequency electric way module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620211376.1U CN205430885U (en) | 2016-03-18 | 2016-03-18 | Novel DC power supply's anti interference shielding structure of high frequency electric way module |
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| Publication Number | Publication Date |
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| CN205430885U true CN205430885U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620211376.1U Active CN205430885U (en) | 2016-03-18 | 2016-03-18 | Novel DC power supply's anti interference shielding structure of high frequency electric way module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340924A (en) * | 2016-09-30 | 2017-01-18 | 惠州市雨林科技有限公司 | Low-interference vehicle-mounted wireless charger |
| CN109858199A (en) * | 2019-04-19 | 2019-06-07 | 上海奉天电子股份有限公司 | A kind of hub of USB difference shield wiring and power module separated layout |
| CN109858199B (en) * | 2019-04-19 | 2024-06-07 | 上海奉天电子股份有限公司 | Hub with USB differential shielding wiring and power supply module independently laid out |
-
2016
- 2016-03-18 CN CN201620211376.1U patent/CN205430885U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340924A (en) * | 2016-09-30 | 2017-01-18 | 惠州市雨林科技有限公司 | Low-interference vehicle-mounted wireless charger |
| CN109858199A (en) * | 2019-04-19 | 2019-06-07 | 上海奉天电子股份有限公司 | A kind of hub of USB difference shield wiring and power module separated layout |
| CN109858199B (en) * | 2019-04-19 | 2024-06-07 | 上海奉天电子股份有限公司 | Hub with USB differential shielding wiring and power supply module independently laid out |
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