Communication controller housing and automobile

Abstract

The utility model discloses a communication controller shell, including non -metallic shell and set up in the electromagnetic shielding structure of non -metallic shell, non -metallic shell includes first casing part and second casing part, first casing part has the cavity of accommodating circuit board and opening, second casing part is connected in first casing part to close opening, electromagnetic shielding structure locates in the cavity and covers predetermined area on circuit board. Through the cooperation of non -metallic shell and electromagnetic shielding structure, guarantee electromagnetic compatibility protection performance while, the overall weight of shell has been reduced significantly, has overcome the defect of traditional metal shell cumbersome.

Description

Technical Field

[0001] This utility model relates to the field of automotive communication control, and in particular to a communication controller housing and an automobile. Background Technology

[0002] The Electric Vehicle Communication Controller (EVCC) is a key component for converting communication protocols between electric vehicles and charging stations. Its core function is to convert CAN communication signals conforming to the Chinese national standard GB / T27930 into PLC communication signals conforming to international standards (such as ISO / IEC 15118, DIN 70121, etc.), thereby enabling Chinese standard electric vehicles to be compatible with local charging infrastructure in overseas markets. See also... Figure 1 As shown, this is a mainstream EVCC product on the market, using an aluminum alloy shell 101. Electromagnetic compatibility (EMC) protection is achieved through the metal shell, while multiple fastening screws are used to press the long strip-shaped sealing ring 102 to meet airtightness requirements. However, this structure has significant drawbacks: the high density of the aluminum alloy shell results in excessive product weight, contradicting the lightweight requirements of automobiles; the long sealing ring is prone to stretching or twisting deformation during assembly, requiring a large number of screws for even tightening, which not only leads to low assembly efficiency but also poses a risk of seal failure due to loose screws; furthermore, the design of separating the connector interface from the shell increases the complexity of the sealing structure, further increasing costs. Summary of the Invention

[0003] In order to overcome the defects in the prior art, the first objective of this utility model is to provide a communication controller housing; the second objective of this utility model is to provide an automobile.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] In a first aspect, a communication controller housing includes:

[0006] A non-metallic housing, comprising a first housing portion and a second housing portion, wherein the first housing portion has a cavity for accommodating a circuit board and an opening, and the second housing portion is connected to the first housing portion to close the opening;

[0007] An electromagnetic shielding structure is disposed within the cavity and covers a predetermined area on the circuit board.

[0008] The predetermined area refers to the area on the circuit board that requires electromagnetic shielding protection, and its range can be adjusted according to the functional design of the circuit board, electromagnetic shielding requirements, or actual application scenarios.

[0009] This communication controller's housing, through the combination of a non-metallic shell and an electromagnetic shielding structure, significantly reduces the overall weight of the housing while ensuring electromagnetic compatibility (EMC) protection performance, overcoming the bulky drawbacks of traditional metal shells. The non-metallic shell adopts a split design (a first shell section and a second shell section), facilitating circuit board installation and maintenance. The integrated electromagnetic shielding structure within its cavity can precisely cover predetermined areas on the circuit board requiring electromagnetic shielding protection, effectively suppressing signal interference and improving communication reliability. Furthermore, the non-metallic shell avoids complex metal processing techniques, not only reducing manufacturing costs and improving production efficiency, but also making it suitable for applications such as automobiles where lightweighting and cost control are stringent.

[0010] The non-metallic shell is a plastic part, preferably made of injection-molded engineering plastics, including but not limited to polycarbonate, polyamide, or polyphenylene sulfide. To further improve mechanical properties, glass fiber or carbon fiber reinforcement materials can be added to the engineering plastic.

[0011] The non-metallic housing is made of injection-molded plastic, achieving significant weight reduction compared to traditional metal housings, with a weight reduction of approximately 70% or more. Simultaneously, the injection molding process allows for the integral molding of the housing's cavity, slots, and connector interfaces, greatly reducing machining and assembly steps, improving production efficiency, and lowering manufacturing costs. Furthermore, the inherent corrosion resistance and insulation properties of plastic materials prevent the housing from rusting or becoming conductive in humid environments, further extending the communication controller's lifespan and enhancing safety.

[0012] Preferably, the first housing portion and the second housing portion are connected by screws or snap-fit ​​connections, which can flexibly adapt to different assembly requirements. When using snap-fit ​​connections, the first and second housing portions can directly form a snap-fit ​​structure during injection molding, eliminating the need for additional fasteners. Rapid assembly is achieved through the elastic deformation of the housing itself, significantly reducing the number of screws and assembly steps, lowering production costs, improving assembly efficiency, and further reducing the weight of the housing. Screw connections, on the other hand, allow for adjustment of the tightening force to ensure a tight fit between the mating surfaces, preventing structural loosening due to vibration and facilitating disassembly and maintenance. Furthermore, both connection methods can apply balanced pressure to the seal through evenly distributed connection points, ensuring the reliability of the sealing structure.

[0013] Preferably, the second housing portion is provided with a connector interface for interfacing with external devices. By directly integrating the connector interface onto the second housing, the additional sealing surface between the independent interface component and the housing in traditional communication controller housings can be avoided, thereby simplifying the sealing structure or reducing the use of sealing rings and lowering the risk of seal failure due to multi-stage assembly.

[0014] Preferably, a sealing element is provided at the junction of the first housing portion and the second housing portion. The sealing element is a sealing ring. Providing a sealing ring between the first housing portion and the second housing portion further ensures the sealing effect.

[0015] Preferably, the opening is located on one side of the width direction of the first housing. The width of the opening is greater than the width of the circuit board, and the height of the opening is greater than the mounting height of the electromagnetic shielding structure on the circuit board, allowing the circuit board to be horizontally assembled into the cavity along the width direction. By placing the opening on the side of the housing, rather than on the upper or lower surfaces of a traditional communication controller housing, the joint area between the first and second housing parts is reduced by approximately 50%, and the circumferential length of the corresponding sealing ring is shortened by approximately 60%. This optimizes the traditional full-circumferential seal to a single-sided seal, simultaneously reducing the number of fastening screws required, thereby simplifying the sealing structure, reducing component costs, and further achieving a lightweight housing. Compared to the traditional communication controller housing design where the opening is located on the upper or lower surfaces, requiring sealing and fastening of a large joint area, this solution significantly reduces the risk of seal failure and assembly complexity.

[0016] Preferably, the electromagnetic shielding structure includes a first cover and a second cover connected to the circuit board, respectively covering the upper and lower surfaces of the circuit board. The first and second covers are made of steel sheets. By directly attaching the split cover design to the circuit board surface, compared to traditional aluminum shell solutions, the steel sheet thickness can be reduced to less than 0.3mm while ensuring the same electromagnetic shielding effectiveness, significantly reducing the weight of the shielding structure. Simultaneously, the first and second covers form a full-wrap shield around the circuit board from both the top and bottom, accurately isolating electromagnetic interference in the signal conversion area and improving communication signal stability.

[0017] Preferably, the circuit board is provided with multiple clips for detachable connection with the first and second covers. By directly welding the clips to the circuit board, the steel shielding cover does not need to rely on additional fasteners; the elastic deformation of the clips alone can achieve quick locking or separation between the shielding cover and the circuit board, improving assembly efficiency. Simultaneously, the detachable nature of the clips allows for individual replacement of damaged shielding covers without scrapping the entire circuit board, reducing maintenance costs. Furthermore, the welded connection between the clips and the circuit board ensures that the shielding cover is grounded to the board surface, preventing electromagnetic leakage due to poor contact and improving EMC protection consistency. In addition to the aforementioned clips, magnetic connectors can also be used. The magnetic connector includes a magnetically conductive sheet welded to the circuit board and a permanent magnet located inside the shielding cover. Magnetic attraction secures the shielding cover, while the magnetically conductive sheet is grounded to the circuit board's ground layer, ensuring the grounding continuity of the shielding cover.

[0018] Preferably, the inner wall of the first housing portion is provided with reinforcing ribs, and the reinforcing ribs have limiting grooves for engaging the circuit board. More preferably, the inner wall of the first housing portion is provided with at least two spaced reinforcing ribs, the reinforcing ribs being located on the side of the inner wall of the first housing portion opposite to the opening, and each reinforcing rib has a limiting groove matching the thickness of the circuit board. During installation, the circuit board with integrated electromagnetic shielding structure is pushed horizontally into the cavity from the opening, so that the edge of the circuit board is embedded in the limiting groove. Screwless fixing is achieved through snap-fit ​​fixing, which reduces the use of screws compared to traditional fixing methods, simplifies the assembly process, and improves efficiency. To further enhance the fixing reliability, auxiliary reinforcing ribs with limiting grooves can be added to the other sides of the inner wall of the first housing portion to form a multi-directional limiting structure, thereby suppressing the risk of displacement of the circuit board in a vibration environment.

[0019] Preferably, the first housing portion is equipped with a vent valve. This vent valve balances the pressure difference between the inside and outside of the communication controller housing, preventing condensation of water droplets inside the housing due to sudden changes in ambient temperature, thereby preventing the risk of short circuits in the circuit board. To further improve moisture resistance reliability, an anti-condensation sealant can be applied to the surface of the circuit board. This physically isolates moisture penetration and forms a synergistic protection with the pressure regulation function of the vent valve: the vent valve reduces the conditions for condensation formation, while the sealant directly blocks the contact path between water droplets and circuit components. This dual measure ensures the long-term stability of the communication controller in humid or drastically temperature-sensitive environments.

[0020] Secondly, an automobile includes the aforementioned communication controller housing.

[0021] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0022] 1. Replacing the traditional aluminum alloy shell with injection-molded plastic parts reduces the overall weight of the shell by approximately 70% while maintaining structural strength. This significantly reduces the load on the automotive communication controller and meets the vehicle's lightweight requirements. Furthermore, the plastic material possesses excellent corrosion resistance and insulation properties, allowing it to withstand harsh environments such as humid conditions without additional surface treatment.

[0023] 2. By using injection molding to integrally mold the housing cavity, reinforcing ribs, limiting grooves, and connector interfaces, the multiple machining processes such as milling and drilling required for traditional metal housings are eliminated, significantly reducing manufacturing costs. The connector interface is directly integrated into the housing, reducing the assembly steps of independent interface components, simplifying the sealing structure, and improving assembly efficiency.

[0024] 3. The shielding cover is made of thin steel sheets and consists of two separate sections. It is fixed to the circuit board by clips welded to it, precisely covering the areas on the circuit board that require electromagnetic shielding. The shielding effectiveness is equivalent to that of a traditional aluminum alloy shell, but the weight is reduced by more than 70%. The clip connection makes it easy to install and remove, facilitating maintenance.

[0025] 4. By setting the opening of the housing on one side in the width direction, the joint area between the first housing part and the second housing part is reduced, and the length of the corresponding sealing ring is shortened by 60% (from full circumferential sealing to single-sided sealing), which significantly reduces the risk of sealing failure; at the same time, the number of fastening screws used on the joint surface is reduced, further simplifying the assembly process and reducing the cost of parts.

[0026] 5. The circuit board is secured by the limiting groove on the reinforcing rib of the inner wall of the first housing, eliminating the need for screws used to fix the circuit board in the traditional communication controller housing and avoiding the problem of screws loosening due to vibration. The horizontal push-in assembly facilitates circuit board installation, and the limiting groove can form multi-directional constraints on the circuit board, ensuring its structural stability under complex working conditions.

[0027] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an exploded view of an existing communication controller in the background art of this utility model;

[0030] Figure 2 This is a schematic diagram of the communication controller housing structure in Embodiment 1 of this utility model;

[0031] Figure 3 This is an exploded view of the communication controller in Embodiment 1 of this utility model;

[0032] Figure 4 This is a schematic diagram of the first shell part structure in Embodiment 1 of this utility model;

[0033] Figure 5 This is a schematic diagram of the assembly of the first housing and the circuit board in Embodiment 1 of this utility model;

[0034] Figure 6 This is a side view of the first housing and circuit board assembly in Embodiment 1 of this utility model;

[0035] Figure 7 This is a schematic diagram of the second shell structure in Embodiment 1 of this utility model.

[0036] The reference numerals in the above figures are as follows: 101, aluminum alloy shell; 102, sealing ring; 1, non-metallic shell; 11, first shell part; 111, opening; 112, reinforcing rib; 113, limiting groove; 12, second shell part; 121, connector interface; 2, electromagnetic shielding structure; 21, first cover; 22, second cover; 3, circuit board; 4, screw; 5, sealing element; 6, buckle; 7, vent valve. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1: See Figures 2-3 As shown, a communication controller housing includes a non-metallic housing 1 and an electromagnetic shielding structure 2 disposed within the non-metallic housing 1. The non-metallic housing 1 includes a first housing portion 11 and a second housing portion 12. The first housing portion 11 has a cavity for accommodating a circuit board 3 and an opening 111. The second housing portion 12 is connected to the first housing portion 11 to close the opening 111. The electromagnetic shielding structure 2 is disposed within the cavity and covers a predetermined area on the circuit board 3. The predetermined area refers to the area on the circuit board 3 that requires electromagnetic shielding protection, such as a signal conversion module or a high-frequency sensitive area.

[0039] In one optional embodiment, the first housing portion 11 and the second housing portion 12 are plastic parts, both integrally injection molded, and have a thickness of 2.5 mm.

[0040] See Figures 3-6 As shown, the first housing part 11 has an opening 111 on one side in the width direction. The width of the opening 111 is greater than the width of the circuit board 3, and the height of the opening 111 is greater than the total height of the circuit board 3 and the electromagnetic shielding structure 2, so as to ensure that the circuit board 3 of the integrated shielding structure can be pushed into the cavity horizontally or vertically.

[0041] See Figure 7 As shown, the second housing portion 12 is a cover plate adapted to the opening 111, and the cover plate integrates a connector interface 121.

[0042] See Figure 3As shown, the first housing portion 11 and the second housing portion 12 are connected by screws 4, and a plurality of screws 4 are spaced apart along the edge of the second housing. Since the opening 111 is located on one side of the width direction of the first housing portion 11, the number of mating surfaces is reduced compared to the original structure, and the number of screws 4 used is also reduced.

[0043] A sealing element 5 is provided at the joint between the first housing part 11 and the second housing part 12. The sealing element 5 is a silicone sealing ring, and its length is reduced by 60% compared with the original structure.

[0044] In an optional implementation, see Figure 4 , 5 As shown, the inner wall of the first housing portion 11 is provided with two spaced reinforcing ribs 112, which are located on the side of the inner wall of the first housing portion 11 opposite to the opening 111. Each reinforcing rib 112 has a limiting groove 113 that matches the thickness of the circuit board 3. During installation, the circuit board 3 with the integrated electromagnetic shielding structure 2 is pushed horizontally into the cavity through the opening 111, so that the edge of the circuit board 3 is embedded in the limiting groove 113 and fixed.

[0045] In an optional implementation, see Figure 3 As shown, the electromagnetic shielding structure 2 includes a first cover 21 and a second cover 22 connected to the circuit board 3, respectively covering the upper and lower surfaces of the circuit board 3. The first cover 21 and the second cover 22 are made of steel sheets with a thickness of 0.3 mm. Multiple clips 6 are welded to the upper and lower sides of the circuit board 3, and the first cover 21 and the second cover 22 are respectively inserted into the clips 6.

[0046] In an optional embodiment, the first housing portion 11 is provided with a vent valve 7, which is used to balance the air pressure difference between the inside and outside of the communication controller housing, and to prevent the air inside the housing from condensing into water droplets due to sudden changes in ambient temperature, thereby preventing the risk of short circuit of the circuit board 3.

[0047] This embodiment also discloses an automobile, including the aforementioned communication controller housing.

[0048] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

Claims

1. A communication controller housing, characterized in that, include: A non-metallic housing, comprising a first housing portion and a second housing portion, wherein the first housing portion has a cavity for accommodating a circuit board and an opening, and the second housing portion is connected to the first housing portion to close the opening; An electromagnetic shielding structure is disposed within the cavity and covers a predetermined area on the circuit board; the electromagnetic shielding structure includes a first cover and a second cover connected to the circuit board, respectively covering the upper and lower surfaces of the circuit board, and the first cover and the second cover are made of steel sheets.

2. The communication controller housing according to claim 1, characterized in that, The non-metallic shell is an injection-molded plastic part.

3. The communication controller housing according to claim 1, characterized in that, The first housing portion and the second housing portion are connected by screws or clips.

4. The communication controller housing according to claim 1, characterized in that, The second housing portion is provided with a connector interface for interfacing with external devices.

5. The communication controller housing according to claim 1, characterized in that, A seal is provided at the junction of the first housing portion and the second housing portion.

6. The communication controller housing according to claim 1, characterized in that, The opening is located on one side of the width direction of the first housing.

7. The communication controller housing according to claim 1, characterized in that, The circuit board is provided with multiple clips for detachable connection with the first cover and the second cover.

8. The communication controller housing according to claim 1, characterized in that, The inner wall of the first housing part is provided with reinforcing ribs, and the reinforcing ribs are provided with limiting grooves for engaging the circuit board.

9. A car, characterized in that, Includes the communication controller housing as described in any one of claims 1-8.

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