Electromagnetic compatibility device for automobile electronic control system

Abstract

The utility model relates to the technical field of electromagnetic compatibility, and discloses an electromagnetic compatibility device for an automobile electronic control system, which comprises a display screen provided with a metal back shell. The isolation box is arranged on one side of the metal back shell, the isolation box is connected with the display screen in an opening and closing mode, and a containing cavity used for installing an electronic assembly is formed in the isolation box; an opening is formed in the end face, facing the display screen, of the isolation box, a magnetic attraction strip is arranged around the end, close to the opening, of the inner wall of the isolation box, a magnetic attraction protrusion is arranged on the metal back shell, and the magnetic attraction strip is matched with the magnetic attraction protrusion in a magnetic attraction mode. The containing cavity of the isolation box enables the electronic assembly to be independent of the overall shielding structure to be installed and detached, the magnetic attraction strip and the magnetic attraction protrusion are matched in a magnetic attraction mode, the display screen and the isolation box form a closed electromagnetic shielding structure, external electromagnetic interference is effectively blocked, meanwhile, the display screen can be opened and closed relative to the isolation box, and the shielding effect is good. The situation that the whole electronic assembly needs to be dismantled and replaced when the electronic assembly breaks down is avoided, and the practicability of the device is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic compatibility, in particular to an electromagnetic compatibility device for an automotive electronic control system. Background Art

[0002] With the rapid development of new energy vehicles, more and more electronic devices and systems are integrated into new energy vehicles, such as battery management systems, motor control systems, in-vehicle entertainment systems and sensors. Therefore, the complexity and integration of automotive electronic control systems continue to increase with the increase of electronic devices and systems. Electronic devices and systems will generate various electromagnetic interferences when working, making automotive electronic control systems more susceptible to electromagnetic interference and causing system instability or failure, which affects driving safety to a certain extent.

[0003] To improve the stability of automotive electronic control systems, existing electromagnetic compatibility devices often use a technology that integrates a shielding body and a control display screen to achieve a sealing effect and reduce the impact of electromagnetic interference. Although the structure is simple and easy to produce, when electronic components in the integrated structure fail, they cannot be eliminated one by one. When the integrated components are removed and restored, it is difficult to achieve the shielding effect they had when leaving the factory, and the entire component often needs to be replaced, increasing maintenance costs.

[0004] Therefore, it is necessary to provide an electromagnetic compatibility device for an automotive electronic control system to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide an electromagnetic compatibility device for an automotive electronic control system to solve the technical problems mentioned in the background art.

[0006] The utility model adopts the following technical solutions:

[0007] An electromagnetic compatibility device for an automotive electronic control system, comprising:

[0008] A display screen having a metal back cover;

[0009] An isolation box is provided on one side of the metal back shell and is connected to the display screen in an openable and closable manner. The isolation box is provided with a receiving cavity for installing electronic components;

[0010] The isolation box is provided with an opening on one end face facing the display screen, and a magnetic strip is provided around one end of the inner wall of the isolation box close to the opening. The metal back shell is provided with a magnetic protrusion corresponding to the magnetic strip, and the magnetic strip is magnetically engaged with the magnetic protrusion so that the display screen and the isolation box form a closed electromagnetic shielding structure.

[0011] Furthermore, a hinge is provided at the top of the isolation box, and the display screen and the isolation box are fixedly connected to the hinge respectively, so that the display screen is rotatably connected to the isolation box around the hinge.

[0012] Furthermore, a driving box extends from opposite sides of the isolation box, and a pushing member is provided in the driving box;

[0013] The pushing member includes a fixed portion and an output shaft, the fixed portion is rotatably connected to the drive box, the output shaft faces the display screen, and the output shaft is hinged to the display screen, and the pushing member pushes the display screen through the output shaft so that the display screen rotates around the hinge relative to the isolation box.

[0014] Furthermore, a plurality of electromagnetic shielding nets are equidistantly arranged in the isolation box, and the electromagnetic shielding nets divide the accommodating cavity into a plurality of independent sub-chambers for respectively installing electronic components of different signal types.

[0015] Furthermore, a plurality of anti-electromagnetic wires are provided on one end surface of the isolation box away from the display screen. The anti-electromagnetic wires penetrate the isolation box, and the plurality of anti-electromagnetic wires are equidistantly arranged corresponding to the plurality of independent sub-chambers.

[0016] Furthermore, an electromagnetic filter is provided at one end of the anti-electromagnetic wire facing the display screen. The electromagnetic filter is fixedly connected to the inner wall of the isolation box and is used for filtering the signal passing through the anti-electromagnetic wire.

[0017] Furthermore, a vent is provided at the bottom end of the isolation box, the vent cover is provided with an electromagnetic shielding cover, a fan is provided at the lower end of the electromagnetic shielding cover, and the air outlet surface of the fan faces the interior of the isolation box.

[0018] Furthermore, one end of the display screen facing away from the isolation box is covered with electromagnetic shielding glass, and the electromagnetic shielding glass is fixedly connected to the display screen.

[0019] Furthermore, a closing detector is provided at the bottom end of the isolation box, and a detection pin is provided on the display screen corresponding to the closing detector. The closing detector contacts and cooperates with the detection pin to detect the tightness of the electromagnetic shielding between the display screen and the isolation box.

[0020] Furthermore, it also includes a plurality of cooling fins, which are attached to the end faces of the electromagnetic shielding net, and the cooling surfaces of the cooling fins face the independent sub-chambers.

[0021] Beneficial effects:

[0022] The utility model provides an electromagnetic compatibility device for an automotive electronic control system. The display screen adopts a metal back shell structure, which can not only perform conventional display functions but also use the metal back shell to electromagnetically shield the inside of the display screen. The accommodating cavity provided in the isolation box allows the electronic components to be installed and disassembled independently of the overall shielding structure. Through the magnetic attraction of the magnetic strips and the magnetic protrusions, the display screen and the isolation box form a closed electromagnetic shielding structure, which effectively blocks external electromagnetic interference. At the same time, the display screen can be conveniently opened and closed relative to the isolation box in a detachable manner, avoiding the need to dismantle and replace the entire electronic component when a failure occurs, thereby significantly improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a partial structural diagram of an embodiment of an electromagnetic compatibility device for an automotive electronic control system according to the present invention;

[0024] Figure 2 This is a cross-sectional diagram of an electromagnetic compatibility device for an automotive electronic control system;

[0025] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0026] Figure 4 This is a schematic diagram of the overall structure of an electromagnetic compatibility device for an automotive electronic control system;

[0027] Figure 5 This is a schematic diagram of the overall structure of another direction of an electromagnetic compatibility device for an automotive electronic control system according to the present invention.

[0028] Among them: 1. Display screen; 101. Metal back shell; 102. Electromagnetic shielding glass; 2. Isolation box; 3. Accommodation cavity; 4. Magnetic strip; 5. Magnetic protrusion; 6. Hinge; 7. Drive box; 8. Pusher; 9. Electromagnetic shielding net; 10. Anti-electromagnetic wire; 11. Electromagnetic filter; 12. Electromagnetic shielding cover; 13. Fan; 14. Closure detector.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "several" means two or more, unless otherwise clearly and specifically defined.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0034] Reference Figures 1 to 3The utility model proposes an electromagnetic compatibility device for an automotive electronic control system, comprising: a display screen 1, wherein the display screen 1 is provided with a metal back shell 101; an isolation box 2, which is arranged on one side of the metal back shell 101, and the isolation box 2 is connected to the display screen 1 in an openable and closable manner, and the interior of the isolation box 2 is provided with a accommodating cavity 3 for installing electronic components; the isolation box 2 is provided with an opening on one end face facing the display screen 1, and a magnetic strip 4 is provided around the inner wall of the isolation box 2 near one end of the opening, and the metal back shell 101 is provided with a magnetic protrusion 5 corresponding to the magnetic strip 4, and the magnetic strip 4 is magnetically matched with the magnetic protrusion 5, so that the display screen 1 and the isolation box 2 form a closed electromagnetic shielding structure.

[0035] In the above embodiment, the front of the display screen 1 is a screen for displaying images, and the metal back shell 101 is preferably made of aluminum alloy, which has good electromagnetic shielding and heat dissipation properties, ensuring that the display screen 1 can operate stably during the operation of the automotive electronic control system, while preventing external electromagnetic interference from affecting internal electronic components.

[0036] The isolation box 2 fits tightly behind the display screen 1 and is opened and closed with the display screen 1 through the magnetic cooperation of the magnetic strip 4 and the magnetic protrusion 5. The isolation box 2 is provided with a accommodating cavity 3 inside, which can be used to install electronic components. The display screen 1 covers the opening of the isolation box 2, so that the device constitutes a closed electromagnetic shielding structure, thereby achieving electromagnetic compatibility with the automotive electronic control system.

[0037] The magnetic strip 4 is arranged on the inner wall of the isolation box 2, and is avoided inward relative to the open end face of the isolation box 2, so that the magnetic protrusion 5 can be tightly inserted into the isolation box 2 and the magnetic strip 4 for magnetic attraction without gaps. The joint has the ability to absorb and disperse electromagnetic interference through magnetism.

[0038] To sum up, the display screen 1 adopts a metal back shell 101 structure, which can not only perform conventional display functions, but also use the metal back shell 101 to electromagnetically shield the inside of the display screen 1. The accommodating cavity 3 provided in the isolation box 2 allows the electronic components to be installed and disassembled independently of the overall shielding structure. Through the magnetic attraction of the magnetic strip 4 and the magnetic protrusion 5, the display screen 1 and the isolation box 2 form a closed electromagnetic shielding structure, which effectively blocks external electromagnetic interference. At the same time, through the detachable manner, the display screen 1 can be conveniently opened and closed relative to the isolation box 2, avoiding the need to dismantle and replace the entire electronic component when a failure occurs. Therefore, this electromagnetic compatibility device can significantly improve the practicality of the device while ensuring the electromagnetic compatibility capability.

[0039] refer to Figure 3 and Figure 4In one embodiment, a hinge 6 is provided at the top of the isolation box 2, and the display screen 1 and the isolation box 2 are fixedly connected to the hinge 6 respectively, so that the display screen 1 is rotatably connected to the isolation box 2 around the hinge 6.

[0040] In the above embodiment, the provision of hinge 6 enables the display screen 1 to be flexibly rotated and opened and closed relative to the isolation box 2, which not only ensures the integrity of the electromagnetic shielding structure but also improves the convenience of operation. The hinge 6 is preferably a hinge, which can realize the hinge function and save space. When it is necessary to check or maintain the internal electronic components, the operator only needs to apply a certain amount of force to simply rotate the display screen 1 to disengage the magnet, and the isolation box 2 can be easily opened without complicated disassembly operations. At the same time, the use of hinge 6 also ensures a stable connection between the display screen 1 and the isolation box 2, effectively preventing damage or loosening due to accidental collisions, and further improving the overall durability and safety of the device.

[0041] In one embodiment, a drive box 7 extends from opposite sides of the isolation box 2, and a pushing member 8 is provided in the drive box 7; the pushing member 8 includes a fixed part and an output shaft, the fixed part is rotatably connected to the drive box 7, the output shaft faces the display screen 1, and the output shaft is hinged to the display screen 1, and the pushing member 8 pushes the display screen 1 through the output shaft so that the display screen 1 rotates around the hinge 6 relative to the isolation box 2.

[0042] In the above embodiment, a pusher 8 is installed inside the drive box 7 on both sides of the isolation box 2. The pusher 8 is preferably an electric cylinder or a pneumatic cylinder, with at least one set on each side, and the other can be a hydraulic rod to save costs. The pusher 8 is rotatably connected to the drive box 7 through its fixed part, and the output shaft is directly hinged to the display screen 1. When the display screen 1 needs to be opened or closed, the pusher 8 in the drive box 7 will apply a certain torque to the display screen 1 through the output shaft, so that the display screen 1 can be easily rotated around the hinge 6. Not only does it increase the convenience of operation, it also ensures the stability and safety of the connection between the display screen 1 and the isolation box 2, and effectively avoids damage or loosening that may occur during operation. At the same time, through the cooperation of the drive box 7 and the pusher 8, the entire operation process is smoother, further improving the user experience of the device.

[0043] In one embodiment, a plurality of electromagnetic shielding nets 9 are evenly spaced in the isolation box 2 , and the electromagnetic shielding nets 9 divide the accommodating cavity 3 into a plurality of independent sub-chambers for respectively installing electronic components of different signal types.

[0044] In the aforementioned embodiment, the isolation box 2 is divided into several independent sub-chambers using equally spaced electromagnetic shielding meshes 9. In this solution, two electromagnetic shielding meshes 9 are used to divide the accommodating chamber 3 into three independent sub-chambers. The electromagnetic shielding meshes 9 installed within the isolation box 2 are made of high-performance conductive material and are arranged at equal intervals to ensure effective electromagnetic isolation between each sub-chamber. By dividing the accommodating chamber 3 into multiple independent sub-chambers using the electromagnetic shielding meshes 9, electronic components with different signal types can be installed and isolated independently, effectively reducing electromagnetic interference between electronic components and improving the overall performance and stability of the vehicle's electronic control system.

[0045] In one embodiment, a plurality of anti-electromagnetic wires 10 are provided on an end surface of the isolation box 2 facing away from the display screen 1 . The anti-electromagnetic wires 10 penetrate the isolation box 2 , and the plurality of anti-electromagnetic wires 10 are equidistantly arranged corresponding to the plurality of independent sub-chambers.

[0046] In the above embodiment, an anti-electromagnetic conductor 10 is installed on the end of the isolation box 2 facing away from the display screen 1. This conductor is used to connect the various actuator units of the vehicle. Made of a special anti-electromagnetic interference material, such as a flexible metal mesh wrapped around the conductor, it effectively resists interference from external electromagnetic signals. The anti-electromagnetic conductors 10 are equidistantly spaced, corresponding to each independent sub-chamber, ensuring that the electronic components within each sub-chamber can be connected to the external circuit via independent anti-electromagnetic conductors 10. This not only improves the electromagnetic compatibility of the entire system, but also ensures the independence and stability of each subsystem, further enhancing the overall performance of the vehicle's electronic control system.

[0047] In one embodiment, an electromagnetic filter 11 is provided at one end of the anti-electromagnetic wire 10 facing the display screen 1 . The electromagnetic filter 11 is fixedly connected to the inner wall of the isolation box 2 . The electromagnetic filter 11 is used to filter the signal passing through the anti-electromagnetic wire 10 .

[0048] In the above embodiment, after passing through the isolation box 2, the anti-electromagnetic conductor 10 first passes through an electromagnetic filter 11. Electromagnetic filter 11 is tightly fixed to the inner wall of the isolation box 2 and performs precise filtering on the signal passing through the anti-electromagnetic conductor 10. Electromagnetic filter 11 effectively eliminates any electromagnetic noise and interference that may be present in the conductor, ensuring that only pure, stable signals are transmitted to the internal electronic components. This not only further improves the system's electromagnetic compatibility but also ensures stable and reliable operation of the vehicle's electronic control system in various complex electromagnetic environments.

[0049] In one embodiment, a vent is provided at the bottom end of the isolation box 2 , and the vent cover is provided with an electromagnetic shielding cover 12 . A fan 13 is provided at the lower end of the electromagnetic shielding cover 12 , and the air outlet surface of the fan 13 faces the interior of the isolation box 2 .

[0050] In the above embodiment, a vent is provided at the bottom of the isolation box 2, and a fan 13 is installed to provide ventilation and ensure effective heat dissipation of the internal electronic components. To prevent electromagnetic radiation from penetrating the vent, an electromagnetic shield 12 is further installed at the vent. When fan 13 is activated, the air outlet of fan 13 is directed directly into the interior of the isolation box 2, effectively drawing cooler air from the outside into the interior and dissipating heat from the electronic components. The design of electromagnetic shield 12 also ensures effective isolation of electromagnetic radiation, ensuring the electromagnetic compatibility of the system.

[0051] In one embodiment, the end of the display screen 1 facing away from the isolation box 2 is covered with an electromagnetic shielding glass 102 , and the electromagnetic shielding glass 102 is fixedly connected to the display screen 1 .

[0052] In the above embodiment, display screen 1, serving as an operating interface and user interaction window, must maintain a clear display while also providing effective closed electromagnetic shielding. One end of display screen 1 is covered with electromagnetic shielding glass 102, manufactured using a special process that not only effectively shields against external electromagnetic interference but also ensures the display quality of display screen 1.

[0053] refer to Figure 2 and Figure 5 In one embodiment, a closing detector 14 is provided at the bottom end of the isolation box 2, and a detection pin is provided on the display screen 1 corresponding to the closing detector 14. The closing detector 14 contacts and cooperates with the detection pin to detect the tightness of the electromagnetic shielding between the display screen 1 and the isolation box 2.

[0054] In the above embodiment, in order to ensure that the display screen 1 and the isolation box 2 are completely closed to form a good electromagnetic shielding effect, a closing detector 14 is provided at the bottom of the isolation box 2. When the display screen 1 is closed, the detection pin provided at the bottom thereof corresponding to the closing detector 14 will be in close contact with the closing detector 14, and the closing detector 14 will send a signal to confirm that the electromagnetic shielding between the display screen 1 and the isolation box 2 has been tightly closed. The specific signal may be a light on or a sound.

[0055] In one embodiment, a plurality of cooling fins are further included, wherein the cooling fins are attached to the end surfaces of the electromagnetic shielding net 9 , and the cooling surfaces of the cooling fins face the independent sub-chambers.

[0056] In the above embodiment, to prevent the heat generated by the electronic components during operation from adversely affecting performance and stability, a cooling fin is further attached to the end surface of the electromagnetic shielding mesh 9 of the independent sub-chamber. The cooling fin is preferably a semiconductor cooling fin to ensure that it does not occupy too much space in the accommodating chamber 3. At the same time, the cooling fin is arranged to avoid the mesh holes of the electromagnetic shielding mesh 9 to prevent blockage of air circulation in the accommodating chamber 3. The cooling surface of the cooling fin is directly facing the independent sub-chamber. When the electronic component generates excessive heat, the cooling fin will quickly start, and the cooling surface will cool the electronic component. The heat-generating surface of the cooling fin will transfer the heat to the electromagnetic shielding mesh 9 for conduction, and dissipate the heat through the fan 13, ensuring that the interior of the sub-chamber is maintained within a suitable temperature range.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electromagnetic compatibility device for an automotive electronic control system, characterized in that: include: A display screen having a metal back cover; An isolation box is provided on one side of the metal back shell and is connected to the display screen in an openable and closable manner. The isolation box is provided with a receiving cavity for installing electronic components; The isolation box is provided with an opening on one end face facing the display screen, and a magnetic strip is provided around one end of the inner wall of the isolation box close to the opening. The metal back shell is provided with a magnetic protrusion corresponding to the magnetic strip, and the magnetic strip is magnetically engaged with the magnetic protrusion so that the display screen and the isolation box form a closed electromagnetic shielding structure.

2. The electromagnetic compatibility device for an automotive electronic control system according to claim 1, characterized in that: A hinge is provided at the top of the isolation box, and the display screen and the isolation box are fixedly connected to the hinge respectively, so that the display screen is rotatably connected to the isolation box around the hinge.

3. The electromagnetic compatibility device for an automotive electronic control system according to claim 2, characterized in that: A driving box extends from opposite sides of the isolation box, and a pushing member is provided in the driving box; The pushing member includes a fixed portion and an output shaft, the fixed portion is rotatably connected to the drive box, the output shaft faces the display screen, and the output shaft is hinged to the display screen, and the pushing member pushes the display screen through the output shaft so that the display screen rotates around the hinge relative to the isolation box.

4. The electromagnetic compatibility device for an automotive electronic control system according to claim 1, characterized in that: A plurality of electromagnetic shielding nets are equidistantly arranged in the isolation box, and the electromagnetic shielding nets divide the accommodating cavity into a plurality of independent sub-chambers for respectively installing electronic components of different signal types.

5. The electromagnetic compatibility device for an automotive electronic control system according to claim 4, characterized in that: A plurality of anti-electromagnetic wires are arranged on one end surface of the isolation box away from the display screen. The anti-electromagnetic wires penetrate the isolation box, and the plurality of anti-electromagnetic wires are equidistantly arranged corresponding to the plurality of independent sub-chambers.

6. The electromagnetic compatibility device for an automotive electronic control system according to claim 5, characterized in that: An electromagnetic filter is provided at one end of the anti-electromagnetic wire facing the display screen. The electromagnetic filter is fixedly connected to the inner wall of the isolation box and is used for filtering the signal passing through the anti-electromagnetic wire.

7. The electromagnetic compatibility device for an automotive electronic control system according to claim 1, characterized in that: A vent is provided at the bottom end of the isolation box, an electromagnetic shield is provided on the vent cover, a fan is provided at the lower end of the electromagnetic shield, and an air outlet surface of the fan faces the interior of the isolation box.

8. The electromagnetic compatibility device for an automotive electronic control system according to claim 1, characterized in that: One end of the display screen facing away from the isolation box is covered with electromagnetic shielding glass, and the electromagnetic shielding glass is fixedly connected to the display screen.

9. The electromagnetic compatibility device for an automotive electronic control system according to claim 1, characterized in that: A closing detector is provided at the bottom end of the isolation box, and a detection pin is provided on the display screen corresponding to the closing detector. The closing detector contacts and cooperates with the detection pin to detect the tightness of the electromagnetic shielding between the display screen and the isolation box.

10. The electromagnetic compatibility device for an automotive electronic control system according to claim 5, characterized in that: It also includes a plurality of cooling fins, which are attached to the end surfaces of the electromagnetic shielding net, and the cooling surfaces of the cooling fins face the independent sub-chambers.

Images