Controller EMC protection structure and intelligent driving domain controller
By designing ground pads and boss structures in the controller and combining the use of grids, the problem of EMC test failure in the intelligent driving domain is solved, good EMC test results are achieved and production costs are reduced.
Patent Information
- Application Number
- CN202420050435.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-08
AI Technical Summary
In the field of automotive electronics, the access peripherals for intelligent driving are becoming more and more complex, which makes it easy for failure in automotive EMC tests. The existing designs cannot meet EMC tests such as RE, resulting in increased time delays and project delivery risks.
A controller EMC protective structure is designed, including a housing and a PCBA board, and a grounding pad is provided to abut the metal housing of the connector, and the contact area is increased through the boss and the baffle to form a shielding space to reduce signal interference.
The grounding pad is connected to the metal shell of the connector to effectively prevent signal interference, ensure good EMC testing results, and reduce production costs.
Smart Images
Figure CN222235201U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automotive electronic technology, and in particular to a controller EMC protection structure and an intelligent driving domain controller. Background Art
[0002] Electromagnetic compatibility (EMC) refers to the ability of a device or system to operate in accordance with requirements in its electromagnetic environment and not produce intolerable electromagnetic interference to any device in its environment. Therefore, EMC includes two requirements: on the one hand, it means that the electromagnetic interference generated by the equipment to the environment during normal operation cannot exceed a certain limit; on the other hand, it means that the equipment has a certain degree of immunity to the electromagnetic interference in the environment, that is, electromagnetic sensitivity.
[0003] In the field of automotive electronics, connectors have been widely used to achieve power transmission. At the same time, good connector design is also one of the key technologies to solve the EMC problem of automotive power transmission lines. At present, the access and transmission peripherals of intelligent driving are increasing and becoming more and more complex, so failures are more and more likely to occur in automotive EMC testing. The rectification of EMC failures usually requires a lot of time and effort in R&D, especially when the design cannot meet the requirements. The time delay caused by redesign increases the risk of project delivery.
[0004] Therefore, it is urgent to improve the product design so that it can pass EMC tests such as RE in one go. Utility Model Content
[0005] The utility model aims to provide a controller EMC protection structure and an intelligent driving domain controller, which are used to ensure good EMC test results.
[0006] In order to solve the above technical problems, the present application provides a controller EMC protection structure, including: a shell; a PCBA board arranged in the shell, the PCBA board is provided with a socket area, the socket area is provided with a hole connected to a connector, wherein a grounding pad is provided around the hole, the grounding pad protrudes from the surface of the PCBA board to abut against the metal shell of the connector inserted into the hole; wherein the metal shell of the connector is connected to the shell.
[0007] Preferably, a boss extending toward the connector is provided on the housing, and the boss abuts against the connector.
[0008] Preferably, the boss comprises an extension portion and an abutment portion, the extension portion extends toward the connector, and the abutment portion extends in a direction parallel to the metal shell of the connector to increase the abutment area between the boss and the connector.
[0009] Preferably, a surface of one side of the connector facing the boss is a plane.
[0010] Preferably, the extending portion is perpendicular to the plane of the connector, and the abutting portion is perpendicular to the extending portion to form a T-shaped boss.
[0011] Preferably, the connector comprises a plurality of connectors, and the housing is provided with a baffle plate at a gap between two adjacent connectors to reduce signal interference between the two adjacent connectors.
[0012] Preferably, the housing comprises an upper housing and a lower housing, and the PCBA board is disposed between the upper housing and the lower housing.
[0013] Preferably, a copper leakage area is further provided on the PCBA board, and the copper leakage area is respectively abutted against the upper shell and the lower shell to form a shielding space.
[0014] Preferably, a signal trace is provided on the PCBA board, and the signal trace passes through the copper leakage area and is connected to the hole, so as to realize signal transmission with the connector through the hole.
[0015] In order to solve the above technical problems, the present application also provides an intelligent driving domain controller, which includes the controller EMC protection structure described in any of the above embodiments.
[0016] The beneficial effect of the present application is: by adding a grounding pad around the signal transmission jack, the grounding pad is abutted against the metal shell of the connector inserted into the hole, and then the grounding connection between the grounding pad and the controller shell is achieved through the connector, thereby effectively preventing signal interference between the inside and the outside, and ensuring good EMC test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the controller EMC protection structure of the present application;
[0019] Figure 2 This is a structural schematic diagram of a specific embodiment of the PCBA board of this application;
[0020] Figure 3 This is a structural schematic diagram of a specific embodiment of the connector of the present application;
[0021] Figure 4 This is a structural schematic diagram of a specific embodiment of the socket area of the PCBA board of this application;
[0022] Figure 5 This is a schematic cross-sectional structure diagram of the first specific embodiment of the EMC protection structure of the controller of the present application;
[0023] Figure 6 This is a schematic structural diagram of the second specific embodiment of the controller EMC protection structure of the present application. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0025] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said", and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless otherwise clearly indicated above, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.
[0026] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0027] It should be understood that the terms "include", "comprises" or any other variations used herein are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.
[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The presence of the phrase at each location in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0030] The present application is now further described with reference to the accompanying drawings and specific embodiments.
[0031] This application provides a controller EMC protection structure, please refer to Figures 1 to 6 , Figure 1 This is a schematic diagram of the overall structure of an embodiment of the controller EMC protection structure of the present application, as shown in Figure 1 As shown, the controller EMC protection structure includes: a housing 11 and a PCBA board 12 arranged in the housing 11.
[0032] Among them, please further Figure 2 , Figure 2 This is a schematic diagram of the structure of a specific embodiment of the PCBA board of this application. Figure 2 As shown, a socket area 121 is provided on the PCBA board 12 , and the socket area 121 is provided with a hole 1211 connected to the connector 122 .
[0033] The structure of the connector 122 is described in detail. Figure 3 , Figure 3 This is a schematic diagram of the structure of a specific embodiment of the connector of this application. Figure 3 As shown, the connector 122 includes a plug-in portion 1221 connected to the PCBA board 12 and a signal transmission portion 1222 connected to an external signal. The plug-in portion 1221 of the connector 122 is provided with four pins to be plugged into the holes 1211 on the PCBA board 12 to achieve signal connection. The housing of the connector 122 is a metal housing.
[0034] In this specific embodiment, a grounding pad 1212 is provided around the hole 1211 so that the grounding pad 1212 abuts against the metal shell of the connector 122 inserted into the hole 1211, thereby connecting the grounding pad 1212 to the housing 11 through the metal shell of the connector 122 to form a ground connection. Figure 4 , Figure 4 This is a structural schematic diagram of a specific embodiment of the socket area of the PCBA board of the present application. Figure 4 for Figure 2 The specific structural diagram of the socket area of the PCBA board is shown in the figure. Figure 4 As shown, a ground pad 1212 is disposed around the hole 1211 (that is, the position of the jack area 121 corresponding to the connector 122 ).
[0035] The ground pad 1212 protrudes from the surface of the PCBA board 12, so that the ground pad 1212 can contact the floating part of the metal shell of the connector 122 in the insertion hole 1211. The metal shell of the connector 122 is also connected to the housing 11 of the controller, so that the ground pad 1212 on the PCBA board 12 is grounded to the housing 11 of the controller through the metal shell of the connector 122, so as to ensure a good EMC test effect.
[0036] In this embodiment, please refer to Figure 5 , Figure 5 This is a schematic cross-sectional view of the first specific embodiment of the controller EMC protection structure of this application. Figure 5 As shown, preferably, a boss 111 extending toward the connector 122 is provided on the housing 11, and the boss 111 abuts against the connector 122, thereby ensuring that the housing 11 is connected to the metal shell of the connector 122, and then ensuring that the grounding pad 1212 of the PCBA board 12 is connected to the housing 11 through the connector 122 to achieve grounding, thereby ensuring a good EMC test effect. In other embodiments, the metal shell of the connector 122 can also be connected to the housing 11 by other snap-on structures, which are not limited here.
[0037] Specifically, the boss 111 includes an extension portion 1111 and an abutment portion 1112, wherein the extension portion 1111 extends toward the direction of the connector 122, and the abutment portion 1112 extends in a direction parallel to the metal shell of the connector 122, thereby increasing the abutment area between the boss 111 and the connector 122. Specifically, the abutment area between the abutment portion 1112 of the boss 111 and the metal shell of the connector 122 can be increased. Figure 2 and Figure 4 As shown, the abutting portion 1112 of the boss 111 abuts against a surface of the plug-in portion 1221 of the connector 122 that is away from the side where the pins are arranged.
[0038] In a specific embodiment, the side surface of the connector 122 facing the boss 111 is a plane. The extension portion 1111 of the boss 111 is arranged perpendicular to the plane of the connector 122, and the abutment portion 1112 is arranged perpendicular to the extension portion 1111, thereby forming a T-shaped boss. Among them, the abutment portion 1112 of the T-shaped boss abuts against the plane of the connector 122, thereby ensuring that the boss abuts the connector 122 while also increasing the abutment area with the connector 122, thereby improving the grounding effect. In other embodiments, the side surface of the connector 122 facing the boss 111 may also be an arc surface, and the abutment portion 1112 is perpendicular to the extension portion 1111 and is arranged along a section parallel to the arc surface of the connector 122, which is not limited here.
[0039] It should be noted that the boss 111 is disposed inside the housing 11 to abut against the plug-in portion 1221 of the connector 122 located inside the housing 11 .
[0040] In this embodiment, the connector 122 includes a plurality of connectors. Figure 6 , Figure 6 This is a schematic diagram of the structure of the second specific embodiment of the controller EMC protection structure of this application. Figure 6 As shown, the housing 11 is provided with a baffle plate 112 at the gap between two adjacent connectors 122, and the baffle plate 112 and the housing 11 can be integrally formed. The baffle plate 112 can effectively reduce signal interference between two adjacent connectors 122, avoid signal superposition, and reduce the signal strength radiated externally.
[0041] For more details, please refer to Figure 1 The housing 11 includes an upper housing 1101 and a lower housing 1102 , the upper housing 1101 and the lower housing 1102 form a receiving cavity, and the PCBA board 12 is disposed between the upper housing 1101 and the lower housing 1102 , that is, in the receiving cavity formed by the upper housing 1101 and the lower housing 1102 .
[0042] In this specific embodiment, it can be understood that the PCBA board is placed on the lower housing 1102, the grounding pad 1212 on the PCBA board 12 is arranged toward one side surface of the upper housing 1101, and the boss 111 is arranged on the upper housing 1101 and extends toward the grounding pad 1212, wherein the grounding pad 1212 is connected to the upper housing 1101 through the connector 122 and the boss 111. The baffle plate 112 can also be arranged on the upper housing 1101, which is not limited here. The upper housing 1101, the lower housing 1102 and the PCBA board 12 can be fixedly connected by screws.
[0043] In this specific embodiment, the PCBA board 12 is also provided with a copper leakage area 123, wherein the copper leakage area 123 can be provided on the front and back sides of the PCBA board to respectively abut against the upper shell 1101 and the lower shell 1102 to form a shielding space, that is, grounding, so as to avoid mutual interference between the signal on the PCBA board 12 and the external signal, and further improve the EMC test. Preferably, the copper leakage area 123 is provided around the signal device 124 provided on the PCBA board 12. For details, please refer to Figure 2 .
[0044] Specifically, the jack area 121 is disposed in an area of the copper leakage area 123 away from the signal device 124 , thereby reducing signal interference between external signals and internal devices of the PCBA board 12 .
[0045] Specifically, the PCBA board 12 is also provided with a signal trace 125, which penetrates the copper leakage area 123 and is connected to the hole 1211, so as to realize signal transmission with the connector 122 through the hole 1211, and specifically realizes signal transmission between external signals and internal devices of the PCBA board 12.
[0046] In a specific embodiment, the signal is a video signal, and the hole 1211 is formed as an interface for inputting or outputting the video signal. The device on the PCBA board 12 transmits the signal through the video signal trace 125 and the interface and the connector 122, and then transmits the video signal through the connector 122 and the external device inserted into the connector 122. In other embodiments, other signals may also be used, which are not limited here.
[0047] This application also provides an intelligent driving domain controller. The specific structure of the intelligent driving domain controller can be found in Figure 1 The overall structure diagram of the intelligent driving domain controller includes the controller EMC protection structure described in any of the above embodiments.
[0048] The beneficial effect of the present application is that by adding a grounding pad around the signal transmission jack, the grounding pad is abutted against the metal shell of the connector inserted into the hole, and then the grounding pad is connected to the shell of the controller through the connector, thereby effectively preventing signal interference between the inside and the outside, and ensuring a good EMC test effect. In addition, since the connector is a necessary device in the controller, the present application can also ensure a good EMC test without the need for additional structural design, and compared with the existing design scheme of adding a sealing structure, it also reduces the production cost of the product.
[0049] The above description is only an implementation method of the present application, and does not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A controller EMC protection structure, characterized in that: include: case; A PCBA board is arranged in the housing, the PCBA board is provided with a socket area, the socket area is provided with a hole connected to the connector, wherein a grounding pad is arranged around the hole, the grounding pad protrudes from the surface of the PCBA board to abut against the metal shell of the connector inserted into the hole; Wherein, the metal shell of the connector is connected to the housing.
2. The controller EMC protection structure according to claim 1, characterized in that: The housing is provided with a boss extending toward the connector, and the boss abuts against the connector.
3. The controller EMC protection structure according to claim 2, characterized in that: The boss comprises an extending portion and an abutting portion, wherein the extending portion extends toward the connector, and the abutting portion extends in a direction parallel to the metal shell of the connector to increase the abutting area between the boss and the connector.
4. The controller EMC protection structure according to claim 3, characterized in that: A surface of one side of the connector facing the boss is a plane.
5. The controller EMC protection structure according to claim 4, characterized in that: The extending portion is perpendicular to the plane of the connector, and the abutting portion is perpendicular to the extending portion to form a T-shaped boss.
6. The controller EMC protection structure according to claim 1, characterized in that: The connectors include a plurality of connectors, and the housing is provided with a baffle plate at a gap between two adjacent connectors to reduce signal interference between the two adjacent connectors.
7. The controller EMC protection structure according to claim 1, characterized in that: The housing comprises an upper housing and a lower housing, and the PCBA board is arranged between the upper housing and the lower housing.
8. The controller EMC protection structure according to claim 7, characterized in that: The PCBA board is also provided with a copper leakage area, and the copper leakage area is respectively abutted against the upper shell and the lower shell to form a shielding space.
9. The controller EMC protection structure according to claim 8, characterized in that: The PCBA board is provided with a signal routing line, and the signal routing line passes through the copper leakage area and is connected to the hole, so as to realize signal transmission with the connector through the hole.
10. An intelligent driving domain controller, characterized in that: The intelligent driving domain controller includes the controller EMC protection structure according to any one of claims 1 to 9.