CN218941666U

CN218941666U - Controller EMC protective structure and intelligent cabin controller

Info

Publication number: CN218941666U
Application number: CN202223033637.XU
Authority: CN
Inventors: 张壮壮
Original assignee: Mgjia Beijing Technology Co ltd
Current assignee: Mgjia Beijing Technology Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-04-28
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses a controller EMC protection structure and an intelligent cabin controller, comprising: the lower shell is used for positioning the PCBA board; the lower shell is provided with a main connector shielding cavity with an opening at the top end and the front end and a plurality of non-main connector shielding cavities, and the main connector shielding cavities are not communicated with the non-main connector shielding cavities; the upper shell is buckled above the lower shell and forms a shielding shell with the lower shell; the top end of the EMC elastic sheet is connected with the upper shell, and the bottom end of the EMC elastic sheet is contacted with the copper leakage part on the PCBA board; the EMC shrapnel, the PCBA board, the lower shell and the upper shell are enclosed to form a second main connector shielding cavity. The utility model effectively prevents signal interference between the main connector of the PCBA board and the non-main connector of the PCBA board, and avoids external influence and EMC problem on the premise of ensuring normal operation of functions of the main connector A2B power amplifier and the like.

Description

Controller EMC protective structure and intelligent cabin controller

Technical Field

The utility model relates to the technical field of automobile electronic devices, in particular to a controller EMC protection structure and an intelligent cabin controller.

Background

Electromagnetic compatibility EMC refers to the ability of a device or system to operate satisfactorily in its electromagnetic environment and not to create intolerable electromagnetic interference with any device in its environment. Thus, EMC includes two requirements: on one hand, electromagnetic interference generated by equipment on the environment in the normal operation process cannot exceed a certain limit value; on the other hand, the device has a certain degree of immunity, namely electromagnetic sensitivity, to electromagnetic interference existing in the environment.

In the automotive electronics field, connectors have been widely used to achieve power transmission. Meanwhile, a good connector design is also one of key technologies for solving the EMC problem of an automobile power transmission line. As automotive electronics functions become more and more integrated, EMC problems faced by automotive electronic control units become more and more complex. Especially when functions such as an A2B power amplifier are integrated on a main connector, the conduction emission current method is easy to exceed standard (A2B signals), the switching frequency of the power amplifier Pwm is easy to exceed standard in the CE current method, and a shielding structure is not arranged between the main connector and a non-main connector in the existing controller EMC, so that EMC problems can become more troublesome.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the EMC problem is caused by the fact that a shielding structure is not arranged between a main connector and a non-main connector in the existing controller EMC, so as to provide a controller EMC protection structure and an intelligent cabin controller.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a controller EMC guard structure, comprising:

the lower shell is used for positioning the PCBA board; the PCBA board main connector is positioned in the main connector shielding cavity, the PCBA board non-main connector is positioned in the non-main connector shielding cavity, and the main connector shielding cavity and the non-main connector shielding cavity are not communicated with each other; when the PCBA board is positioned inside the lower shell, the PCBA board plugs the top end of the main connector shielding cavity and the top end of the non-main connector shielding cavity;

the upper shell is buckled above the lower shell and forms a shielding shell with the lower shell;

the top end of the EMC elastic sheet is connected with the upper shell, and the bottom end of the EMC elastic sheet is contacted with the copper leakage part on the PCBA board; the EMC shrapnel, the PCBA board, the lower shell and the upper shell are enclosed to form a second main connector shielding cavity.

Optionally, the EMC spring sheet is L-shaped.

Optionally, the main connector shielding cavity and the non-main connector shielding cavity are respectively separated by a separation rib.

Optionally, the inside circumference of lower casing is provided with the support rib that supports the PCBA board, and the interval is provided with a plurality of spliced poles on the support rib, has seted up first threaded connection hole on each spliced pole, and the PCBA board is fixed a position to in the first threaded connection hole through first screw.

Optionally, a plurality of positioning grooves which enable the rear end of the PCBA plate to extend out are formed in the rear side wall of the lower shell downwards, and an antenna housing is detachably connected to the rear side wall of the lower shell.

Optionally, the upper shell comprises a top plate and two flanging plates, and the two flanging plates are vertically arranged at the front end and the rear end of the top plate respectively; and positioning clamping grooves matched with the flanging plate are respectively formed in the front side wall and the rear side wall of the lower shell.

Optionally, the upper housing is grounded.

An intelligent cockpit controller comprising:

the PCB comprises a PCBA board, wherein a PCBA board main connector and a PCBA board non-main connector are arranged at the bottom end of the PCBA board, and a copper leakage part is arranged at the top end of the PCBA board;

the controller EMC protection structure is used for positioning and protecting the PCBA board.

Optionally, the method further comprises:

the bracket is detachably arranged on the upper shell and is grounded with the whole vehicle.

Optionally, the method further comprises:

the fan is arranged at the bottom end of the lower shell;

and the heat radiating plate is circumferentially arranged at the bottom end of the lower shell and positioned at the periphery of the fan.

The technical scheme of the utility model has the following advantages:

1. according to the controller EMC protection structure provided by the utility model, the PCBA board main connector and the PCBA board non-main connector are respectively positioned and arranged in different shielding cavities, and the shielding cavities of the main connector and the non-main connector are not communicated with each other, so that signal interference between the PCBA board main connector and the PCBA board non-main connector is effectively prevented, and the shielding cavity of the second main connector is arranged above the PCBA board, so that other signals on the PCBA board are transmitted to the PCBA board main connector from the back of the PCBA board. The utility model can realize the shielding protection of the circuit board and the shell body and the electronic devices of the circuit board and the shell body, can avoid the external influence on the premise of ensuring the normal performance of the functions of the main connector A2B power amplifier and the like, and has the advantages of low cost and convenient assembly.

2. According to the controller EMC protection structure provided by the utility model, the EMC elastic sheet has certain elasticity, and when the upper shell is covered on the lower shell, the EMC elastic sheet can be effectively contacted with the copper leakage part of the PCBA board, so that the shielding of the position of the main connector is realized, and the shielding performance of the whole structure is enhanced.

3. According to the controller EMC protection structure provided by the utility model, the EMC spring sheet is L-shaped, and a second main connector shielding cavity is formed among the EMC spring sheet, the top wall of the upper shell, the side wall of the upper shell and the side wall of the lower shell. The area above the PCBA board main connector is effectively sealed through the second main connector shielding cavity, so that the shielding effect can be further achieved, interference among signals is prevented, and the signals are prevented from affecting the outside.

4. According to the controller EMC protection structure provided by the utility model, the upper shell is grounded, and static electricity in the PCBA board is led into the ground through the EMC elastic sheet and the upper shell, so that circuit elements are effectively protected.

5. The controller EMC protection structure provided by the utility model has the advantages of few parts and simple assembly; the part forming process is simple and the cost is low.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an EMC protection structure of a controller according to the present utility model;

FIG. 2 is a partial cut-away view of a controller EMC shielding structure according to the present utility model;

fig. 3 is a schematic structural diagram of the controller EMC protection structure according to the present utility model when the upper housing is detached;

fig. 4 is a schematic structural diagram of a lower housing in the EMC protection structure of the controller according to the present utility model;

fig. 5 is a schematic structural diagram of the controller EMC protection structure according to the present utility model when the antenna housing is detached from the lower housing;

fig. 6 is a schematic structural diagram of an upper housing in the EMC protection structure of the controller according to the present utility model;

FIG. 7 is a schematic diagram of an intelligent cockpit controller according to the present utility model;

FIG. 8 is an exploded view of an intelligent cockpit controller according to the present utility model;

fig. 9 is a schematic structural diagram of another embodiment of an intelligent cockpit controller of the present utility model.

Reference numerals:

1. the lower shell, 11, the main connector shielding cavity, 12, the non-main connector shielding cavity, 13, the spacer ribs, 14, the support ribs, 15, the positioning grooves, 16, the second main connector shielding cavity, 17, the connecting columns, 110, the positioning columns, 111 and the positioning clamping grooves; 2. PCBA board, 21, copper leakage part; 3. a screw; 4. the upper shell, 41, the roof, 42, the flanging plate, 44, the reference column connecting hole, 45, the EMC shrapnel, 5, the radome, 51, the radome ear plate, 6, the bracket, 61, the bracket main body, 62, the bracket mounting ear, 7, the fan, 8, the heating panel, 9, the PCBA board main connector, 10, the PCBA board non-main connector.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

An embodiment of a controller EMC protection structure as shown in fig. 1 to 6 includes a lower housing 1, an upper housing 4, and an EMC spring 45 that are fastened to each other.

The lower housing 1 is used for positioning the PCBA board 2, and the lower housing 1 is of a semi-surrounding structure. The lower shell 1 is provided with a main connector shielding cavity 11 with an open top end and a front end and a non-main connector shielding cavity 12, the PCBA board main connector 9 is positioned in the main connector shielding cavity, the PCBA board non-main connector 10 is positioned in the non-main connector shielding cavity, and the main connector shielding cavity and the non-main connector shielding cavity are not communicated with each other. When the PCBA board 2 is positioned inside the lower shell 1, the PCBA board 2 plugs the top end of the main connector shielding cavity and the top end of the non-main connector shielding cavity, so that the PCBA board main connector 9 and the PCBA board non-main connector 10 are arranged in each shielding cavity in a sealing manner.

The upper housing 4 is fastened above the lower housing 1 and forms a shielding housing with the lower housing 1.

The top end of the EMC spring 45 is connected with the upper shell 4, and the bottom end of the EMC spring 45 is contacted with the copper leakage part 21 on the PCBA board 2; the EMC spring 45, the PCBA board 2, the lower housing 1 and the upper housing 4 enclose a second main connector shielding cavity 16, and the second main connector shielding 16 is located directly above the main connector shielding cavity 11.

Above-mentioned controller EMC protective structure, fix a position the setting respectively in the shielding cavity of difference with PCBA board main connector and PCBA board non-main connector, the main connector shields and mutually does not communicate between the cavity with non-main connector shielding, and then prevented effectively that the signal interference between PCBA board main connector and the PCBA board non-main connector, and be provided with second main connector shielding cavity 16 above the PCBA board, realize transmitting to PCBA board main connector department from PCBA board back to other signals on the PCBA board, this embodiment adopts two shielding cavities, has avoided signal interference's problem more effectively, has avoided the production of EMC problem. The embodiment can well ground the circuit board and the shell, realize shielding protection of electronic devices, avoid external influence on the premise of ensuring normal performance of functions of the main connector A2B power amplifier and the like, and have the advantages of low cost and convenient assembly.

More specifically, the shielding cavities of the main connector and the shielding cavities of the non-main connector are separated by the separating ribs 13, the separating ribs 13 are made of metal materials, and the shielding cavities of the main connector and the shielding cavities of the non-main connector are metal shielding cavities, so that the shielding effect on the PCBA board main connector, the PCBA board non-main connector and other electronic connectors is good.

The lower casing 1 is provided with support ribs 14 in the inner circumferential direction for supporting the PCBA board 2, and the support ribs 14 are provided upward as PCBA supporting surfaces. The whole PCBA mounting surface is CNC processing, guarantees the planarization. A plurality of connecting columns 17 are arranged on the supporting ribs 14 at intervals, first threaded connecting holes are formed in the connecting columns 17, and the PCBA board 2 is positioned into the first threaded connecting holes through first screws. Specifically, 8 connecting posts 17 are arranged on the supporting ribs 14 at intervals, and each connecting post 17 is provided with a first threaded connecting hole so that the mounting surface is in good contact with the PCBA board. In this embodiment, the top end surfaces of the supporting ribs 14 are located on the same plane, and the PCBA board 2 is effectively supported as a whole by the supporting ribs 14.

A plurality of positioning grooves 15 which enable the rear end of the PCBA plate to extend out are formed in the rear side wall of the lower shell 1 downwards, and the antenna housing 5 is detachably connected to the rear side wall of the lower shell 1. The rear end of the PCBA board in this embodiment is provided with a plurality of rectangular convex plates, and the rectangular convex plates are positioned in the positioning grooves 15. The rear end of the PCBA board is sealed by a radome 5 at the rear side of the lower housing 1.

The left and right ends of the radome 5 are respectively provided with a radome ear plate 51, and the radome ear plates 51 are connected with the rear side wall of the lower housing 1 through second screws. The back end of the PCBA board is closed by a radome ear plate 51.

The static electricity conducting component comprises an EMC elastic piece 45, the top end of the EMC elastic piece 45 is riveted on the upper shell 4 through a rivet, and the bottom end is pressed on the copper leakage part of the PCBA board 2. The EMC spring 45 is made of 304 steel and has a certain elasticity, and when the upper shell 4 is covered on the lower shell 1, the EMC spring 45 can be effectively contacted with the copper leakage part of the PCBA board 2, so as to realize shielding of the main connector position.

As an improved embodiment, the EMC spring 45 is provided in an L-shape, and the EMC spring 45, the top wall of the upper housing, the side wall of the upper housing, and the side wall of the lower housing form the second main connector shielding chamber 16 therebetween. The area above the PCBA board main connector is effectively sealed through the second main connector shielding cavity 16, so that the shielding effect can be further achieved, interference among signals is prevented, and the signals are prevented from affecting the outside.

The upper case 4 includes a top plate 41 and two flanging plates 42, the two flanging plates 42 being vertically disposed at front and rear ends of the top plate 41, respectively; positioning clamping grooves 111 matched with the flanging plate 42 are respectively formed in the front side wall and the rear side wall of the lower shell 1. When the flanging plate 42 in the embodiment is clamped to the positioning clamping groove 111, a closed metal cavity can be formed between the upper shell 4 and the lower shell 1.

As an improved embodiment, a plurality of positioning column connecting holes 44 are formed at the peripheral edge of the upper shell 4 at intervals, correspondingly, a plurality of positioning columns 110 are formed on the top end face of the lower shell 1, the positioning columns 110 extend out of the positioning column connecting holes 44, and positioning of the positioning columns 110 is achieved through the positioning column connecting holes 44.

As an improved embodiment, the upper case 4 in this example is grounded, and static electricity in the PCBA board 2 is led to the ground through the EMC spring 45 and the upper case 4, so that the circuit element is effectively protected.

In the assembly process, the PCBA board 2 is fixedly connected into the lower shell 1 through the screw 3, so that the PCBA board 2 is positioned on the supporting ribs 14 of the lower shell 1, the PCBA board main connector is positioned into the main connector shielding cavity 11, and the PCBA board non-main connector is positioned into the non-main connector shielding cavity 12. Then the upper shell 4 is placed above the lower shell 1, so that the EMC spring 45 is positioned to the copper leakage part 21 of the PCBA board 2, the EMC spring 45 is in sealing contact with the copper leakage part 21 of the PCBA board 2, the upper shell 4 is fixed to the lower shell 1 through screws, and the flanging plate 42 of the upper shell 4 is clamped in the positioning clamping groove 111 of the lower shell 1, so that a shielding shell is formed.

Example 2

As shown in fig. 7 to 9, the present embodiment discloses an intelligent cabin controller, including a PCBA board 2 and a controller EMC protection structure in the embodiment.

The bottom end of the PCBA board 2 is provided with a PCBA board main connector and a PCBA board non-main connector, and the top end of the PCBA board 2 is provided with a copper leakage part 21. A controller EMC protection structure in embodiment 1 is used for positioning and protecting a PCBA board 2.

As an improved implementation manner, in this embodiment, the support 6 is detachably disposed on the upper housing 4, and the static electricity on the PCBA board 2 is led out through grounding the support 6 and the whole vehicle. The bracket 6 includes a bracket main body 61 and a bracket mounting lug 62, and the bracket mounting lug 62 is connected with the whole vehicle. The bracket body 61 is provided with a plurality of lightening holes.

As an alternative embodiment, the support in this example may be replaced with a vibration support, as shown in fig. 9.

As a modified embodiment, the present embodiment is provided with a fan 7 and a heat radiation plate 8 at the bottom end of the lower case 1. The heat radiation plate 8 is circumferentially arranged at the bottom end of the lower housing 1 and is positioned at the periphery of the fan 7, and the heat on the lower housing 1 is well radiated through the fan 7 and the heat radiation plate 8.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims

1. A controller EMC protection structure, comprising:

the lower shell (1) is used for positioning the PCBA (2); the PCBA board main connector is positioned in the main connector shielding cavity (11), the PCBA board non-main connector is positioned in the non-main connector shielding cavity (12), and the main connector shielding cavity (11) and the non-main connector shielding cavity (12) are not communicated with each other; when the PCBA board (2) is positioned inside the lower shell (1), the PCBA board (2) plugs the top end of the main connector shielding cavity and the top end of the non-main connector shielding cavity;

an upper shell (4) which is buckled above the lower shell (1) and forms a shielding shell with the lower shell (1);

an EMC spring piece (45), the top end of which is connected with the upper shell (4), and the bottom end of which is contacted with a copper leakage part (21) on the PCBA board (2); EMC shell fragment (45) enclose with PCBA board (2), lower casing (1) and last casing (4) and establish into confined second main connector shielding chamber (16), and second main connector shielding chamber (16) are located main connector shielding chamber (11) directly over.

2. The controller EMC protection structure according to claim 1, wherein the EMC dome (45) is provided in an L-shape.

3. A controller EMC protection according to claim 1, characterized in that the main connector shielding cavities and the non-main connector shielding cavities are separated by a spacer rib (13), respectively.

4. The controller EMC protection structure according to claim 1, wherein a support rib (14) for supporting the PCBA board (2) is circumferentially arranged in the lower housing (1), a plurality of connecting posts (17) are arranged on the support rib (14) at intervals, first threaded connecting holes are formed in the connecting posts (17), and the PCBA board (2) is positioned into the first threaded connecting holes through first screws.

5. The controller EMC protection structure of claim 1, wherein a plurality of positioning grooves (15) extending out of the rear end of the PCBA board are formed in the rear side wall of the lower housing (1) downwards, and an antenna housing (5) is detachably connected to the rear side wall of the lower housing (1).

6. The controller EMC protection structure according to claim 1, wherein the upper case (4) includes a top plate (41) and two flanging plates (42), the two flanging plates (42) being vertically disposed at front and rear ends of the top plate (41), respectively; positioning clamping grooves (111) matched with the flanging plate (42) are respectively formed in the front side wall and the rear side wall of the lower shell (1).

7. A controller EMC protection structure according to claim 1, characterized in that the upper housing (4) is grounded.

8. An intelligent cockpit controller, comprising:

the PCB assembly comprises a PCBA board (2), wherein a PCBA board main connector and a PCBA board non-main connector are arranged at the bottom end of the PCBA board (2), and a copper leakage part (21) is arranged at the top end of the PCBA board (2);

a controller EMC protection structure according to any one of claims 1-7, for locating and protecting the PCBA board (2).

9. The intelligent cockpit controller of claim 8 further comprising:

and the bracket (6) is detachably arranged on the upper shell (4) and is grounded with the whole vehicle.

10. The intelligent cockpit controller of claim 8 further comprising:

a fan (7) arranged at the bottom end of the lower shell (1);

and the heat dissipation plate (8) is circumferentially arranged at the bottom end of the lower shell (1) and is positioned at the periphery of the fan (7).