CN113271759A - Automobile domain controller - Google Patents
Automobile domain controller Download PDFInfo
- Publication number
- CN113271759A CN113271759A CN202110515685.3A CN202110515685A CN113271759A CN 113271759 A CN113271759 A CN 113271759A CN 202110515685 A CN202110515685 A CN 202110515685A CN 113271759 A CN113271759 A CN 113271759A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- shield
- circuit board
- control circuit
- foam
- 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.)
- Granted
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0049—Casings being metallic containers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0064—Earth or grounding circuit
Abstract
The invention relates to an automobile domain controller, which comprises an automobile domain control circuit board and a metal shielding shell, wherein the automobile domain control circuit board is provided with a plurality of outward signal interfaces and is surrounded by the metal shielding shell; the invention can effectively surround the interference sources such as electronic components, circuits, assemblies and the like, effectively prevent the outward diffusion of interference electromagnetic fields and simultaneously prevent the interference electromagnetic fields from being influenced by external electromagnetic fields. Meanwhile, the invention also reduces the risk of falling and vibration failure of the controller.
Description
Technical Field
The invention relates to an automobile domain controller, belonging to the technical field of automobile ADAS and automatic driving.
Background
In recent years, with the development of automobile electronization, the information flow is greatly increased due to automobile intelligent networking, the information to be processed by a domain controller is more and the frequency is faster and more due to the upgrade of an electronic and electrical framework of an automobile, and therefore, the design circuit of the domain controller is more and more complex, and thus, more and more highly integrated circuits of the domain controller are caused. The increase in electronic components has also led to a concomitant increase in electromagnetic radiation.
The electromagnetic shielding technology can effectively reduce the phenomenon of electromagnetic interference generated by an electromagnetic field and surrounding electronic components. And simultaneously, the possibility of problems of electronic components caused by electromagnetic field interference is reduced. How to make the domain controller meet the requirements of electronic shielding and vibration and drop of the vehicle gauge becomes a troublesome problem of domain controller design.
Disclosure of Invention
The purpose of the invention is: the domain controller can meet the requirements of electronic shielding and vibration and drop of the vehicle gauge.
In order to achieve the above object, the technical solution of the present invention is to provide an automobile domain controller, which includes an automobile domain control circuit board and a metal shielding shell, wherein the automobile domain control circuit board has a plurality of external signal interfaces, and the automobile domain control circuit board is surrounded by the metal shielding shell, and is characterized in that all the signal interfaces are located at one side or two sides of the automobile domain control circuit board;
the metal shielding shell comprises a cover plate and a shield which are mutually buckled, and an accommodating space for placing the automobile domain control circuit board is formed after the cover plate and the shield are buckled, wherein the cover plate is positioned on the upper side of the automobile domain control circuit board, and the shield is positioned on the lower side of the automobile domain control circuit board; the peripheral edge regions of the cover plate and the shield are respectively defined as an interface-free region and an interface region, and the signal interface unit is only located in the interface region, so that the method comprises the following steps:
the cover plate and the shield are provided with a convex rib and a groove in the non-interface area, a blank holder is formed on the inner side of the groove, after the cover plate and the shield are buckled with each other, the convex rib is clamped in the groove, so that the part of the automobile domain control circuit board except the signal interface is completely wrapped in the metal shielding shell, and meanwhile, the blank holder is pressed on the edge of the automobile domain control circuit board;
the outermost sides of the interface areas of the cover plate and the shield are respectively provided with an upper outer side raised enclosure and a lower outer side raised enclosure, the lower outer side raised enclosure is respectively provided with lower half holes with the number and the shape matched with the signal interfaces, and after the cover plate and the shield are mutually buckled, each corresponding signal interface is clamped by each lower half hole;
the area with the interface of the cover plate and the shield is also respectively provided with an upper inner side raised fence and a lower inner side raised fence, and the upper inner side raised fence and the lower inner side raised fence are respectively positioned at the inner sides of the upper outer side raised fence and the lower outer side raised fence; the top surface of the raised enclosing wall at the lower inner side is respectively provided with a plurality of lower foam grooves;
the automobile domain control circuit board is provided with a grounding copper sheet at a position corresponding to the lower inner side raised enclosing wall, the grounding copper sheet is provided with conductive foam, and the conductive foam is clamped in the lower foam groove after the cover plate and the shield are mutually buckled.
Preferably, the laying path of the ribs and the grooves completely covers the non-interface area.
Preferably, the convex rib is arranged on the cover plate, and the groove is correspondingly arranged on the protective cover; or the convex ribs are arranged on the protective cover, and the grooves are correspondingly arranged on the cover plate.
Preferably, the contact surface of the blank pressing and the automobile domain control circuit board is provided with a blank pressing groove.
Preferably, all the upper foam grooves are arranged at certain intervals.
Preferably, all the lower foam grooves are arranged at certain intervals.
Preferably, the upper foam groove and the lower foam groove are arranged up and down correspondingly.
Preferably, the gap between the upper foam grooves is set according to the electromagnetic shielding wave band.
Preferably, the raised enclosing wall on the upper outer side is provided with an upper half hole, and after the cover plate and the protective cover are mutually buckled, the upper half hole is matched with the lower half hole at the corresponding position to clamp the corresponding signal interface.
Preferably, the bottom surface of the raised enclosing wall on the upper inner side is provided with a plurality of upper foam grooves; the automobile domain control circuit board and the corresponding position of the upper inner side raised enclosing wall are provided with grounding copper sheets, conductive foam is arranged on the grounding copper sheets, and the cover plate and the shield are buckled with each other, so that the conductive foam on the upper side and the lower side is clamped in the upper foam groove and the lower foam groove.
The invention can effectively surround the interference sources such as electronic components, circuits, assemblies and the like, effectively prevent the outward diffusion of interference electromagnetic fields and simultaneously prevent the interference electromagnetic fields from being influenced by external electromagnetic fields. Meanwhile, the invention also reduces the risk of falling and vibration failure of the controller.
Compared with the prior art, the invention has the following characteristics:
1) the matching design of the cover plate and the shield in the groove and the convex rib of the interface-free area increases the overall electromagnetic shielding effect of the product.
2) Through the assembling process, the upper inner side raised enclosing wall and the lower inner side raised enclosing wall compress the conductive foam, and the conductive grounding of the automobile domain control circuit board and the shield or the cover plate is realized.
3) The cover plate and the shield tightly press the automobile domain control circuit board through blank pressing design, and vibration reliability is guaranteed.
4) Certain blank pressing grooves are reserved on blank pressing of the cover plate or the shield, stress of the automobile domain control circuit board in the falling process is reduced to a certain degree, and falling risks are reduced. Meanwhile, the edge pressing groove provides space for increasing foam in the later period to optimize electromagnetic shielding.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a detailed cross-sectional view of the present invention;
FIG. 3 is an enlarged detailed sectional view of the present invention;
FIG. 4 is an enlarged, fragmentary view of the shroud of the present invention;
fig. 5 is a partially enlarged view of the cover plate of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
As shown in fig. 1, the car domain controller provided by the present invention comprises a car domain control circuit board 3 and a metal shielding shell.
The car domain control circuit board 3 has a plurality of external signal interfaces 3-1, and all the signal interfaces 3-1 are located on one side of the interference source circuit board 3 in this embodiment.
The metal shield case includes a cover plate 2 and a shield 4 fastened to each other by screws 1 located at four corners. After the cover plate 2 and the protective cover 4 are buckled with each other, the automobile domain control circuit board 3 is positioned in the formed accommodating space. The cover plate 2 is positioned on the upper side of the automobile domain control circuit board 3, and the shield 4 is positioned on the lower side of the automobile domain control circuit board 3.
In this embodiment, the peripheral edge regions of the cover plate 2 and the shield 4 are defined as an interface-free region and an interface region, respectively, and the signal interface 3-1 is located only in the interface region.
Referring to fig. 2 and 4, the non-interface region of the cover plate 2 and the shield 4 is provided with a structure that the rib 6 is matched with the groove 5. The rib 6 may be provided on the cover plate 2 or on the shield 4. Likewise, the recess 5 can be provided on the cover plate 2 as well as on the shield 4. In the present embodiment, the rib 6 is disposed on the cover plate 2, and the groove 5 is correspondingly disposed on the shield 4, and the path of the rib 6 and the groove 5 completely covers the non-interface area. The inner side of the groove 5 is provided with a pressing edge 9. After the cover plate 2 and the shield 4 are buckled with each other, the convex rib 6 is clamped into the groove 5, so that the part of the automobile domain control circuit board 3 except the signal interface 3-1 is completely wrapped in a metal shielding shell formed by buckling the cover plate 2 and the shield 4 with each other. Meanwhile, the automobile domain control circuit board 3 is tightly pressed through the blank pressing 9, so that the automobile domain control circuit board 3 is reliably fixed in the metal shielding shell, and meanwhile, the conductive foam 8 (described later) on the automobile domain control circuit board 3 is ensured to be in contact with the shield 4 or the cover plate 2, and the electromagnetic shielding function is realized. In this embodiment, the contact surface of blank holder 9 and car territory control circuit board 3 has blank holder recess 10 for car territory control circuit board 3 reduces at the in-process stress that falls for fall failure risk is reduced.
Referring to fig. 3, 4 and 5, the cover plate 2 and the shield 4 are provided with upper and lower outer raised walls 12-1 and 12-2, respectively, in the outermost region of the interfaced area between the cover plate 2 and the shield 4. In this embodiment, there are 6 signal interfaces 3-1 with different shapes, and 6 upper half holes and lower half holes with shapes matched with the signal interfaces 3-1 one by one are respectively arranged on the upper outer raised enclosing wall 12-1 and the lower outer raised enclosing wall 12-2. After the cover plate 2 and the protective cover 4 are fastened with each other, 6 upper half holes and 6 lower half holes are correspondingly clamped above and below the 6 signal interfaces 3-1 with different shapes respectively. It should be noted that the upper half hole is not essential, and depending on the shape of the signal port 3-1, the upper half hole may not be provided, and only the lower half hole catches the signal port 3-1 at the corresponding position.
The joint area of the cover plate 2 and the shield 4 is also provided with an upper inner raised fence 11-1 and a lower inner raised fence 11-2, respectively. The upper inner raised perimeter wall 11-1 and the lower inner raised perimeter wall 11-2 are located inside the upper outer raised perimeter wall 12-1 and the lower outer raised perimeter wall 12-2, respectively. The bottom surface of the upper inner side raised enclosing wall 11-1 and the top surface of the lower inner side raised enclosing wall 11-2 are respectively provided with a plurality of upper foam grooves 7-1 and lower foam grooves 7-2 which are arranged at equal intervals, the number of the upper foam grooves 7-1 and the number of the lower foam grooves 7-2 are the same, and the upper foam grooves and the lower foam grooves are arranged in a one-to-one correspondence manner. The gap between the upper foam groove 7-1 and the lower foam groove 7-2 is set according to the electromagnetic shielding wave band.
And welding a grounding copper sheet 13 at the corresponding position of the automobile domain control circuit board 3 and the upper inner side raised enclosing wall 11-1 and the lower inner side raised enclosing wall 11-2, and welding conductive foam 8 on the grounding copper sheet 13. After the cover plate 2 and the shield 4 are buckled with each other, the conductive foam 8 is clamped in the upper foam groove 7-1 and the lower foam groove 7-2. It should be noted that: the upper foam groove 7-1 and the corresponding conductive foam 8 and grounding copper sheet 13 are not necessary, and the above components are arranged according to the required shielding effect.
Claims (10)
1. An automobile domain controller comprises an automobile domain control circuit board and a metal shielding shell, wherein the automobile domain control circuit board is provided with a plurality of outward signal interfaces and is surrounded by the metal shielding shell;
the metal shielding shell comprises a cover plate and a shield which are mutually buckled, and an accommodating space for placing the automobile domain control circuit board is formed after the cover plate and the shield are buckled, wherein the cover plate is positioned on the upper side of the automobile domain control circuit board, and the shield is positioned on the lower side of the automobile domain control circuit board; the peripheral edge regions of the cover plate and the shield are respectively defined as an interface-free region and an interface region, and the signal interface unit is only located in the interface region, so that the method comprises the following steps:
the cover plate and the shield are provided with a convex rib and a groove in the non-interface area, a blank holder is formed on the inner side of the groove, after the cover plate and the shield are buckled with each other, the convex rib is clamped in the groove, so that the part of the automobile domain control circuit board except the signal interface is completely wrapped in the metal shielding shell, and meanwhile, the blank holder is pressed on the edge of the automobile domain control circuit board;
the outermost sides of the interface areas of the cover plate and the shield are respectively provided with an upper outer side raised enclosure and a lower outer side raised enclosure, the lower outer side raised enclosure is respectively provided with lower half holes with the number and the shape matched with the signal interfaces, and after the cover plate and the shield are mutually buckled, each corresponding signal interface is clamped by each lower half hole;
the area with the interface of the cover plate and the shield is also respectively provided with an upper inner side raised fence and a lower inner side raised fence, and the upper inner side raised fence and the lower inner side raised fence are respectively positioned at the inner sides of the upper outer side raised fence and the lower outer side raised fence; the top surface of the raised enclosing wall at the lower inner side is respectively provided with a plurality of lower foam grooves;
the automobile domain control circuit board is provided with a grounding copper sheet at a position corresponding to the lower inner side raised enclosing wall, the grounding copper sheet is provided with conductive foam, and the conductive foam is clamped in the lower foam groove after the cover plate and the shield are mutually buckled.
2. A domain controller according to claim 1, wherein the path of said rib and said groove completely covers said non-interface area.
3. The automobile domain controller as claimed in claim 1, wherein the rib is provided on the cover plate, and the groove is correspondingly provided on the shield; or the convex ribs are arranged on the protective cover, and the grooves are correspondingly arranged on the cover plate.
4. The car domain controller of claim 1, wherein a contact surface of the pressing edge and the car domain control circuit board is provided with a pressing edge groove.
5. A domain controller according to claim 1, wherein all of said upper foam grooves are equally spaced.
6. A domain controller according to claim 1, wherein all of said lower foam grooves are equally spaced.
7. The automobile domain controller as claimed in claim 1, wherein the upper foam groove and the lower foam groove are correspondingly arranged up and down.
8. The car domain controller of claim 1, wherein a gap between said upper foam grooves is set according to an electromagnetic shielding band.
9. The automobile domain controller of claim 1, wherein the upper outer raised perimeter wall is provided with an upper half hole, and after the cover plate and the protective cover are fastened to each other, the upper half hole is matched with the lower half hole at the corresponding position to clamp the corresponding signal interface.
10. The automobile domain controller of claim 1, wherein the bottom surface of said upper inner raised perimeter wall is provided with a plurality of upper foam grooves; the automobile domain control circuit board and the corresponding position of the upper inner side raised enclosing wall are provided with grounding copper sheets, conductive foam is arranged on the grounding copper sheets, and the cover plate and the shield are buckled with each other, so that the conductive foam on the upper side and the lower side is clamped in the upper foam groove and the lower foam groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110515685.3A CN113271759B (en) | 2021-05-12 | 2021-05-12 | Automobile domain controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110515685.3A CN113271759B (en) | 2021-05-12 | 2021-05-12 | Automobile domain controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113271759A true CN113271759A (en) | 2021-08-17 |
| CN113271759B CN113271759B (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110515685.3A Active CN113271759B (en) | 2021-05-12 | 2021-05-12 | Automobile domain controller |
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| CN (1) | CN113271759B (en) |
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| CN210298405U (en) * | 2019-05-13 | 2020-04-10 | 深圳市美成胶粘制品有限公司 | All-round electrically conductive bubble is cotton |
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2021
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113271759B (en) | 2022-11-01 |
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