Controller and automobile

Abstract

According to the controller, a circuit board is installed in a containing cavity formed between a first shell and a second shell, the outer edge of the circuit board is clamped by the inner side of a connecting structure of the first shell and the second shell, and magnetic isolation protruding parts are formed on the outer sides of the connecting structure of the first shell and the second shell respectively. The magnetic isolation protruding parts of the first shell and the magnetic isolation protruding parts of the second shell are arranged in the extending direction of the circuit board in a staggered mode so as to form a magnetic reflection channel for reflecting electromagnetic signals, the electromagnetic signals radiated by the main board through the gap can be reflected back to the circuit board, and therefore the electromagnetic signals can be locked in the containing space conveniently. Therefore, the controller can effectively reduce the electromagnetic signals emitted outwards when the controller works, the influence of the electromagnetic signals emitted when the controller works on the normal work of other components of the vehicle is avoided, and the safety of the vehicle can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a controller which can be used in automobiles. Background Art

[0002] Electromagnetic compatibility (EMC) refers to the ability of a device or system to operate normally in the electromagnetic environment in which it is located without introducing unacceptable electromagnetic interference (EMI) to other devices in that environment, while also possessing sufficient immunity (EMS) to resist the effects of electromagnetic interference from that environment. Therefore, EMC standards cover two core aspects: first, the electromagnetic energy radiated by the device into the external environment during operation must be maintained below specified limits to avoid adverse effects on surrounding electronic equipment; second, the device must have a sufficient electromagnetic sensitivity threshold, meaning it can resist electromagnetic interference from the external environment to ensure its stable and reliable operation.

[0003] In controllers, circuit boards are key electronic components. The integrated electronic components generate electromagnetic signals during operation. If these signals are not properly managed, they can transform into electromagnetic interference, affecting the overall performance of the controller and even causing failure or malfunction. Therefore, during the design and manufacturing of circuit boards, electromagnetic compatibility must be fully considered, and appropriate measures must be taken to reduce electromagnetic radiation and improve immunity to ensure stable operation of the entire electrical system.

[0004] In the prior art, the controller housing typically consists of an upper and lower housing. Copper plates are placed at the edges of the circuit board, contacting the housing. These plates act as an isolation and absorption barrier. The absorbed radiation energy is transferred to the ground through the housing's connection to the ground plane, reducing and lowering the radiated power. However, the copper contact surface between the housing and the circuit board isn't completely in contact, meaning a wide gap remains between the housing and the circuit board. This allows electromagnetic waves to radiate from the gap, or external electromagnetic waves to radiate into the housing, impacting the controller's EMC performance. Utility Model Content

[0005] The purpose of the present utility model is to solve the technical problem in the prior art that the contact surface between the housing and the copper plate of the circuit board cannot achieve complete zero contact, that is, there is still a wide gap between the housing and the circuit board. At this time, electromagnetic waves will radiate out from the gap or external electromagnetic waves will radiate into the housing, thereby affecting the EMC performance of the controller.

[0006] In order to solve the above technical problems, an embodiment of the present utility model discloses a controller, including a circuit board and a first shell and a second shell arranged on both sides of the circuit board along the thickness direction of the circuit board. The peripheries of the first shell and the second shell are fixedly connected to each other, and a accommodating cavity for installing the circuit board is formed between the first shell and the second shell.

[0007] The periphery of each of the first shell and the second shell extends around the outer edge of the circuit board, and are respectively formed with connection structures that are opposite to each other in the thickness direction of the circuit board.

[0008] Among them, viewed along the thickness direction of the circuit board, the inner side of the connecting structure of the first shell and the second shell clamps the outer edge of the circuit board, and the outer side of the connecting structure of the first shell and the second shell respectively forms magnetic isolation protrusions, and the magnetic isolation protrusions of the first shell and the magnetic isolation protrusions of the second shell are staggered in the extension direction of the circuit board.

[0009] In the cross-sectional view taken along the thickness direction of the circuit board, the inner sides of the connecting structure of the first shell and the second shell respectively abut against the two side surfaces of the circuit board, and a curved and extended magnetic reflection channel is formed between the magnetic isolation protrusion of the first shell, the magnetic isolation protrusion on the second shell and the edge of the circuit board.

[0010] Moreover, λ is the wavelength of the highest frequency electromagnetic wave of the circuit board, and the width of the magnetic reflection channel is less than λ / 20.

[0011] By adopting the above-mentioned technical solution, this controller installs the circuit board in the accommodating cavity formed between the first shell and the second shell, and the inner side of the connection structure of the first shell and the second shell clamps the outer edge of the circuit board, so that the circuit board is assembled more firmly and the circuit board is prevented from shaking in the accommodating cavity. The electromagnetic shielding effect of the accommodating cavity can greatly reduce the electromagnetic signals radiated outward by the mainboard; in addition, magnetic isolation protrusions are respectively formed on the outer sides of the connection structure of the first shell and the second shell, and the magnetic isolation protrusions of the first shell and the magnetic isolation protrusions of the second shell are staggered in the extension direction of the circuit board to form a magnetic reflection channel for reflecting electromagnetic signals, which can reflect the electromagnetic signals radiated by the mainboard through the gap back to the circuit board, which is conducive to locking this part of the electromagnetic signal inside the accommodating space, thereby further reducing the electromagnetic signals radiated outward by the mainboard. Therefore, this controller can effectively reduce the electromagnetic signals emitted outward when the controller is working, and improve the electromagnetic compatibility performance of the controller.

[0012] Furthermore, the width of the magnetic reflection channel is less than λ / 20, which can enable the electromagnetic signal of the circuit board to be reflected in the magnetic reflection channel as much as possible when it is working, ensuring that only a very small part of the electromagnetic signal passes through the magnetic reflection channel and is radiated to the outside, which is not enough to affect the normal operation of other electromagnetic components.

[0013] The embodiment of the present utility model further discloses a controller, wherein the magnetic shielding protrusion of the first shell and the magnetic shielding protrusion on the second shell extend relative to each other along the thickness direction of the circuit board and extend along the periphery of the first shell and the second shell respectively.

[0014] By adopting the above technical solution, by arranging magnetic isolation protrusions on the first shell and the second shell, and allowing the magnetic isolation protrusions to extend relative to each other along the thickness direction of the circuit board, an electromagnetic shielding layer is formed between the magnetic isolation protrusions of the first shell and the magnetic isolation protrusions of the second shell, which can effectively isolate or weaken the electromagnetic radiation from the circuit board or other internal electronic components, protect the electronic devices located in the surrounding environment of the controller from electromagnetic interference, and also protect the inside of the controller from external electromagnetic interference; in addition, the magnetic isolation protrusion extends along the periphery of the shell, which not only enhances the mechanical strength of the shell, but also provides additional structural support, making the controller more sturdy and durable.

[0015] The embodiment of the present utility model further discloses a controller, wherein a first magnetic-shielding protrusion is integrally formed on the first shell, and a second magnetic-shielding protrusion is integrally formed on the second shell.

[0016] When viewed along the thickness direction of the circuit board, the end of the first magnetic shielding protrusion is located between the circuit board and the second magnetic shielding protrusion.

[0017] Moreover, in the cross-sectional view taken along the thickness direction of the circuit board, the magnetic reflection channel includes a first magnetic isolation channel formed between the circuit board and the side wall of the first magnetic isolation protrusion, a second magnetic isolation channel formed between the end face of the first magnetic isolation protrusion and the opposite end face of the second shell, and a third magnetic isolation channel formed between the other side wall of the first magnetic isolation protrusion and the side wall of the second magnetic isolation protrusion.

[0018] With this technical solution, when viewed through the thickness of the circuit board, the end of the first magnetic-shielding protrusion is located between the circuit board and the second magnetic-shielding protrusion, thereby forming a complex magnetic reflection channel along the thickness of the circuit board. Specifically, the first, second, and third magnetic-shielding channels, which are connected in sequence, form a curved and extended magnetic reflection channel. This increases the number of reflections of electromagnetic signals in the magnetic reflection channel, effectively blocking the propagation path of electromagnetic waves, reducing the leakage and intrusion of electromagnetic radiation, and further improving the electromagnetic compatibility performance of the controller.

[0019] An embodiment of the present utility model also discloses a controller. In a cross-sectional view taken along the thickness direction of the circuit board, the first shell forms a recess at a position corresponding to the second magnetic isolation protrusion, the second magnetic isolation protrusion extends toward the recess, and a fourth magnetic isolation channel is formed between the end face of the second magnetic isolation protrusion and the relative surface of the recess; wherein the first magnetic isolation channel, the second magnetic isolation channel, the third magnetic isolation channel and the fourth magnetic isolation channel are connected to form a "J"-shaped magnetic reflection channel.

[0020] Furthermore, in the thickness direction of the circuit board, the peripheral outer contour of the first shell is flush with the peripheral outer contour of the second shell.

[0021] With this technical solution, the first housing forms a recess at a location corresponding to the second magnetic-isolating protrusion, and the second magnetic-isolating protrusion extends toward the recess. This creates a fourth magnetic-isolating channel between the end surface of the second magnetic-isolating protrusion and the opposing surface of the recess. This creates a "J"-shaped magnetic reflection channel, further increasing the number of reflections of electromagnetic signals within the magnetic reflection channel and blocking the propagation path of electromagnetic waves. Furthermore, the outer perimeter of the first housing is flush with that of the second housing, giving the controller a clean appearance and facilitating assembly.

[0022] An embodiment of the present utility model further discloses a controller, in which, in a cross-sectional view taken along the thickness direction of the circuit board, the channel width of the first magnetic isolation channel is greater than the channel widths of the second magnetic isolation channel, the third magnetic isolation channel, and the fourth magnetic isolation channel.

[0023] Furthermore, the channel widths of the second magnetic isolation channel, the third magnetic isolation channel, and the fourth magnetic isolation channel are equal and smaller than λ / 100.

[0024] By adopting the above technical solution, when the channel widths of the second magnetic isolation channel, the third magnetic isolation channel and the fourth magnetic isolation channel are less than λ / 100, the propagation path of electromagnetic waves can be better blocked, and while maintaining the necessary electromagnetic shielding effect, by reducing the width of some magnetic isolation channels, it helps to achieve a compact structure of the controller.

[0025] An embodiment of the present utility model also discloses a controller, in which a third magnetic isolation protrusion is further provided on the second shell. Viewed along the thickness direction of the circuit board, the third magnetic isolation protrusion is spaced apart from the second magnetic isolation protrusion, and the end of the first magnetic isolation protrusion on the first shell is located between the second magnetic isolation protrusion and the third magnetic isolation protrusion.

[0026] By adopting the above technical solution, the third magnetic shielding protrusion arranged on the second shell forms a more complex magnetic reflection channel between the first magnetic shielding protrusion, the second magnetic shielding protrusion and the third magnetic shielding protrusion, so that the controller has better electromagnetic compatibility performance.

[0027] The embodiment of the present utility model further discloses a controller, wherein a copper sheet is laid on at least one periphery of the circuit board facing the second shell, and the copper sheet abuts against the inner side of the connection structure of the second shell.

[0028] By adopting the above technical solution, the copper sheet, as a metal with good conductivity, can effectively absorb and reflect electromagnetic waves, thereby forming an electromagnetic shielding layer between the circuit board and the second shell. In combination with the magnetic isolation structure outside the connection structure, it further reduces the interference of the electromagnetic radiation generated by the circuit board on the external environment, and can also protect the circuit board from interference from external electromagnetic fields.

[0029] An embodiment of the present utility model further discloses a controller, wherein the first shell and the second shell are made of conductive materials, and at least the second shell is grounded.

[0030] By adopting the above technical solution, the copper sheet on one side surface of the circuit board is grounded through the second shell, and the radiation energy on the copper sheet is transferred to the ground through the second shell, thereby achieving the effect of reducing and lowering the radiation power.

[0031] The embodiment of the present utility model further discloses a controller, wherein a plurality of connection holes are arranged at intervals along the circumferential direction at the portion of the circuit board where the copper sheet is laid.

[0032] The first shell and the second shell form multiple fixing holes at positions corresponding to the multiple connection holes, and multiple fasteners respectively penetrate the corresponding connection holes on the circuit board and the corresponding fixing holes on the first shell and the second shell to fix the first shell, the circuit board and the second shell together.

[0033] By adopting the above technical solution, multiple fasteners are respectively passed through the corresponding connection holes on the circuit board and the corresponding fixing holes on the first shell and the second shell to fix the first shell, the circuit board and the second shell together. This not only stably installs the circuit board between the first shell and the second shell, but also limits the position of the copper sheet on the circuit board, thereby improving the connection strength between the circuit board and the copper sheet.

[0034] An embodiment of the present utility model further discloses a car, comprising any one of the above-mentioned controllers.

[0035] By adopting the above technical solution, the controller of this car can effectively reduce the electromagnetic signals emitted outward during operation, and also has a strong anti-interference ability against external electromagnetic signals, thereby improving the electromagnetic compatibility performance of the controller and avoiding as much as possible the electromagnetic signals emitted by the controller during operation from affecting the normal operation of other components of the vehicle, thereby effectively improving the safety of the vehicle.

[0036] The beneficial effects of the utility model are:

[0037] The utility model discloses a controller, which installs a circuit board in a accommodating cavity formed between a first shell and a second shell, and the inner side of the connection structure of the first shell and the second shell clamps the outer edge of the circuit board, so that the circuit board is assembled more firmly and the circuit board is prevented from shaking in the accommodating cavity. The electromagnetic shielding effect of the accommodating cavity can greatly reduce the electromagnetic signals radiated outward by the mainboard; in addition, magnetic isolation protrusions are respectively formed on the outer sides of the connection structure of the first shell and the second shell, and the magnetic isolation protrusions of the first shell and the magnetic isolation protrusions of the second shell are staggered in the extension direction of the circuit board to form a magnetic reflection channel for reflecting electromagnetic signals, which can reflect the electromagnetic signals radiated by the mainboard through the gap back to the circuit board, which is conducive to locking this part of the electromagnetic signals inside the accommodating space, thereby further reducing the electromagnetic signals radiated outward by the mainboard. Therefore, this controller can effectively reduce the electromagnetic signals emitted outward when the controller is working, and improve the electromagnetic compatibility performance of the controller.

[0038] Furthermore, the width of the magnetic reflection channel is less than λ / 20, which can enable the electromagnetic signal of the circuit board to be reflected in the magnetic reflection channel as much as possible when it is working, ensuring that only a very small part of the electromagnetic signal passes through the magnetic reflection channel and is radiated to the outside, which is not enough to affect the normal operation of other electromagnetic components.

[0039] Specifically, a first magnetic shielding protrusion is formed on the first shell, and a second magnetic shielding protrusion is formed on the second shell. When viewed along the thickness direction of the circuit board, the end of the first magnetic shielding protrusion is located between the circuit board and the second magnetic shielding protrusion.

[0040] Moreover, in the cross-sectional view taken along the thickness direction of the circuit board, the magnetic reflection channel includes a first magnetic isolation channel formed between the circuit board and the side wall of the first magnetic isolation protrusion, a second magnetic isolation channel formed between the end face of the first magnetic isolation protrusion and the opposite end face of the second shell, and a third magnetic isolation channel formed between the other side wall of the first magnetic isolation protrusion and the side wall of the second magnetic isolation protrusion. The first magnetic isolation channel, the second magnetic isolation channel and the third magnetic isolation channel connected in sequence constitute a curved and extended magnetic reflection channel, which increases the number of reflections of the electromagnetic signal in the magnetic reflection channel, effectively blocks the propagation path of the electromagnetic wave, reduces the leakage and intrusion of electromagnetic radiation, and further improves the electromagnetic compatibility performance of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a controller provided in an embodiment of the present utility model;

[0042] Figure 2 An exploded schematic diagram of a controller provided in an embodiment of the present utility model;

[0043] Figure 3 A top view of a controller provided in accordance with an embodiment of the present invention;

[0044] Figure 4 for Figure 3 Cross-sectional view at AA in the middle;

[0045] Figure 5 for Figure 4 Partial schematic diagram at point B in the middle;

[0046] Figure 6 A partial schematic diagram of point B in another embodiment;

[0047] Figure 7 A partial schematic diagram of point B in another embodiment;

[0048] Figure 8 A top view of a circuit board of a controller provided in an embodiment of the present invention.

[0049] Description of Reference Numerals

[0050] 10. Controller;

[0051] 100. First shell;

[0052] 200, second shell;

[0053] 300, circuit board; 310, copper sheet; 320, connection hole;

[0054] 400, connection structure;

[0055] 410, first magnetic shielding protrusion; 420, second magnetic shielding protrusion; 430, third magnetic shielding protrusion; 440, recess;

[0056] 401, magnetic reflection channel; 402, first magnetic isolation channel; 403, second magnetic isolation channel; 404, third magnetic isolation channel; 405, fourth magnetic isolation channel;

[0057] 500. Fastener; 600. Connecting plug; 700. Heat dissipation structure; 800. Base plate. DETAILED DESCRIPTION

[0058] In the controller, the circuit board is a key electronic component. The electronic components integrated on it will generate electromagnetic signals during operation. If these signals are not properly managed, they may be converted into electromagnetic interference, affecting the overall performance of the controller and even causing controller failure or malfunction.

[0059] In the prior art, the controller housing is usually composed of an upper housing and a lower housing. This design facilitates the installation and maintenance of internal components. Providing a copper sheet in contact with the housing at the edge of the circuit board is a common EMC design method, which aims to reduce electromagnetic radiation through the isolation and absorption functions of the copper sheet.

[0060] However, in practical applications, due to limitations in machining accuracy and assembly techniques, it is often difficult to achieve perfect contact between the copper surface of the housing and the PCB. This incomplete contact can lead to a wide gap between the housing and the PCB, creating a potential channel for electromagnetic radiation.

[0061] To this end, the present invention provides a controller, which installs a circuit board in a accommodating cavity formed between a first shell and a second shell, and the outer edge of the circuit board is clamped on the inner side of the connecting structure of the first shell and the second shell, and magnetic isolation protrusions are respectively formed on the outer sides of the connecting structure of the first shell and the second shell. The magnetic isolation protrusions of the first shell and the magnetic isolation protrusions of the second shell are staggered in the extension direction of the circuit board to form a magnetic reflection channel for reflecting electromagnetic signals, which can reflect the electromagnetic signals radiated by the mainboard through the gap back to the circuit board, which is conducive to locking this part of the electromagnetic signal inside the accommodating space, thereby reducing the electromagnetic signals radiated outward by the mainboard, and at the same time can hinder the external electromagnetic signals from being transmitted into the shell, thereby improving the anti-interference ability of the controller.

[0062] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0063] like Figure 1-Figure 5 As shown, an embodiment of the present invention discloses a controller 10, comprising a circuit board 300, and a first housing 100 and a second housing 200 disposed on either side of the circuit board 300 along the thickness direction of the circuit board 300. The peripheries of the first housing 100 and the second housing 200 are fixedly connected to each other, and a cavity for mounting the circuit board 300 is formed between the first housing 100 and the second housing 200. It should be noted that this embodiment does not specifically limit the electronic components integrated on the circuit board 300.

[0064] The periphery of each of the first housing 100 and the second housing 200 extends around the outer edge of the circuit board 300 , and are respectively formed with connection structures 400 facing each other in the thickness direction of the circuit board 300 .

[0065] Among them, viewed along the thickness direction of the circuit board 300, the inner side of the connection structure 400 of the first shell 100 and the second shell 200 clamps the outer edge of the circuit board 300, and the outer sides of the connection structure 400 of the first shell 100 and the second shell 200 respectively form magnetic isolation protrusions, and the magnetic isolation protrusions of the first shell 100 and the magnetic isolation protrusions of the second shell 200 are staggered in the extension direction of the circuit board 300.

[0066] In the cross-sectional view taken along the thickness direction of the circuit board 300, the inner sides of the connecting structure 400 of the first shell 100 and the second shell 200 respectively abut against the two side surfaces of the circuit board 300, and a curved and extended magnetic reflection channel 401 is formed between the magnetic isolation protrusion of the first shell 100, the magnetic isolation protrusion on the second shell 200 and the edge of the circuit board 300.

[0067] This controller 10 installs the circuit board 300 in the accommodating cavity formed between the first shell 100 and the second shell 200, and the inner side of the connecting structure 400 of the first shell 100 and the second shell 200 clamps the outer edge of the circuit board 300, thereby more firmly assembling the circuit board 300 and preventing the circuit board 300 from shaking in the accommodating cavity. The electromagnetic shielding effect of the accommodating cavity can greatly reduce the electromagnetic signals radiated outward by the mainboard. In addition, magnetic shielding protrusions are respectively formed on the outer sides of the connecting structure 400 of the first shell 100 and the second shell 200. The magnetic shielding protrusions of the first shell 100 and the magnetic shielding protrusions of the second shell 200 are staggered in the extension direction of the circuit board 300 to form a magnetic reflection channel 401 for reflecting electromagnetic signals. The electromagnetic signals radiated by the mainboard through the gap are reflected back to the circuit board 300, which is conducive to locking this part of the electromagnetic signals inside the accommodating space, thereby further reducing the electromagnetic signals radiated outward by the mainboard. Therefore, this controller 10 can effectively reduce the electromagnetic signals emitted outward when the controller 10 is in operation, thereby improving the electromagnetic compatibility performance of the controller 10.

[0068] Furthermore, λ is the wavelength of the highest frequency electromagnetic wave of the circuit board 300, and the width of the magnetic reflection channel 401 is less than λ / 20. It should be understood that the width of the magnetic reflection channel 401 refers to the widest width of the magnetic reflection channel 401 in the width direction perpendicular to the extension direction in the cross-sectional view. The width of the magnetic reflection channel 401 can be λ / 25, λ / 30, λ / 34, λ / 40, or any width less than λ / 20. Those skilled in the art can design it according to actual conditions and specific needs, and this embodiment does not specifically limit this.

[0069] Furthermore, when the width of the magnetic reflection channel 401 is less than λ / 20, the electromagnetic signal of the circuit board 300 during operation can be reflected as much as possible in the magnetic reflection channel 401, ensuring that only a very small portion of the electromagnetic signal passes through the magnetic reflection channel 401 and is radiated to the outside, which is not enough to affect the normal operation of other electromagnetic components.

[0070] Specifically, in this embodiment, the magnetic shielding protrusions of the first housing 100 and the magnetic shielding protrusions of the second housing 200 extend toward each other along the thickness direction of the circuit board 300, and extend along the periphery of the first housing 100 and the second housing 200, respectively. It should be noted that the magnetic shielding protrusions extending toward each other can extend not only along the thickness direction of the circuit board 300, but can also extend at an angle relative to the thickness direction of the circuit board 300. Those skilled in the art may design this according to actual conditions and specific needs, and this embodiment does not specifically limit this.

[0071] In this embodiment, by providing magnetic isolation protrusions on the first shell 100 and the second shell 200, and allowing the magnetic isolation protrusions to extend relative to each other along the thickness direction of the circuit board 300, an electromagnetic shielding layer is formed between the magnetic isolation protrusions of the first shell 100 and the magnetic isolation protrusions of the second shell 200, which can effectively isolate or weaken the electromagnetic radiation from the circuit board 300 or other internal electronic components, protect the surrounding environment from interference, and also protect the interior of the controller 10 from external electromagnetic interference; in addition, the magnetic isolation protrusions extend along the periphery of the shell, which not only enhances the mechanical strength of the shell, but also provides additional structural support, making the controller 10 more sturdy and durable.

[0072] It should be noted that in this embodiment, the magnetic shielding protrusions are integrally formed on the first and second housings 100, 200. This design further enhances the electromagnetic shielding and electromagnetic compatibility performance of the controller 10. Specifically, the magnetic shielding protrusions, as direct extensions of the first and second housings 100, 200, are integral with the housings (i.e., the first and second housings 100, 200). This integrated design not only improves the structural robustness and durability, but also simplifies the manufacturing process and reduces production costs.

[0073] Moreover, since the magnetic isolation protrusions are part of the shell, there are no seams or gaps between them and the shell, thereby avoiding the leakage of electromagnetic signals caused by loose seams. This gapless shielding layer can more effectively block the electromagnetic radiation generated by the circuit board 300 and reduce interference to the outside world.

[0074] Therefore, the controller 10 provided by the present invention can achieve the effect of improving the EMC performance of the controller 10 by simply adjusting the matching structure between the first shell 100 and the second shell 200 without increasing the cost.

[0075] Specifically, the controller 10 can be applied to fields such as automobiles, household appliances, industrial manufacturing, agricultural machinery, medical equipment, and transportation, and the present invention does not make any specific limitations thereto.

[0076] The magnetic shielding protrusions on the first shell 100 and the second shell 200 are described in detail below.

[0077] like Figure 5 As shown, in this embodiment, a first magnetic shielding protrusion 410 is formed on the first shell 100 , and a second magnetic shielding protrusion 420 is formed on the second shell 200 .

[0078] When viewed along the thickness direction of the circuit board 300, the end of the first magnetic-shielding protrusion 410 is located between the circuit board 300 and the second magnetic-shielding protrusion 420. It should be noted that in this embodiment, both the first magnetic-shielding protrusion 410 and the second magnetic-shielding protrusion 420 extend along the thickness direction of the circuit board 300. Furthermore, in a cross-sectional view taken along the thickness direction of the circuit board 300, the magnetic reflection channel 401 includes a first magnetic-shielding channel 402 formed between the circuit board 300 and a sidewall of the first magnetic-shielding protrusion 410, a second magnetic-shielding channel 403 formed between an end surface of the first magnetic-shielding protrusion 410 and an opposite end surface of the second housing 200, and a third magnetic-shielding channel 404 formed between the other sidewall of the first magnetic-shielding protrusion 410 and a sidewall of the second magnetic-shielding protrusion 420.

[0079] Specifically, the first magnetic isolation channel 402, the second magnetic isolation channel 403 and the third magnetic isolation channel 404 connected in sequence constitute a curved and extended magnetic reflection channel 401, which increases the number of reflections of the electromagnetic signal in the magnetic reflection channel 401, effectively blocks the propagation path of the electromagnetic wave, reduces the leakage and intrusion of electromagnetic radiation, and further improves the electromagnetic compatibility performance of the controller 10.

[0080] An embodiment of the present utility model also discloses a controller 10. In a cross-sectional view taken along the thickness direction of the circuit board 300, the first shell 100 forms a recess 440 at a position corresponding to the second magnetic isolation protrusion 420, the second magnetic isolation protrusion 420 extends toward the recess 440, and a fourth magnetic isolation channel 405 is formed between the end face of the second magnetic isolation protrusion 420 and the relative surface of the recess 440; wherein the first magnetic isolation channel 402, the second magnetic isolation channel 403, the third magnetic isolation channel 404 and the fourth magnetic isolation channel 405 are connected to form a "J"-shaped magnetic reflection channel 401.

[0081] Furthermore, in the thickness direction of the circuit board 300 , the outer peripheral contour of the first housing 100 and the outer peripheral contour of the second housing 200 are flush with each other.

[0082] Because the first housing 100 forms a recess 440 at a position corresponding to the second magnetic-isolating protrusion 420, and the second magnetic-isolating protrusion 420 extends toward the recess 440, a fourth magnetic-isolating channel 405 is formed between the end surface of the second magnetic-isolating protrusion 420 and the opposing surface of the recess 440. This creates a "J"-shaped magnetic reflection channel 401, further increasing the number of reflections of the electromagnetic signal within the magnetic reflection channel 401 and blocking the propagation path of the electromagnetic wave. Furthermore, the outer perimeter of the first housing 100 is flush with that of the second housing 200, giving the controller 10 a regular appearance and facilitating assembly.

[0083] Specifically, in the cross-sectional view taken along the thickness direction of the circuit board 300 , the channel width of the first magnetic isolation channel 402 is greater than the channel widths of the second magnetic isolation channel 403 , the third magnetic isolation channel 404 , and the fourth magnetic isolation channel 405 .

[0084] Furthermore, the channel widths of the second magnetic isolation channel 403 , the third magnetic isolation channel 404 , and the fourth magnetic isolation channel 405 are equal and smaller than λ / 100.

[0085] When the channel widths of the second magnetic isolation channel 403, the third magnetic isolation channel 404, and the fourth magnetic isolation channel 405 are less than λ / 100, the propagation path of electromagnetic waves can be better blocked. While maintaining the necessary electromagnetic shielding effect, by reducing the widths of some magnetic isolation channels, the controller 10 can be made more compact. It should be noted that the channel widths of the second magnetic isolation channel 403, the third magnetic isolation channel 404, and the fourth magnetic isolation channel 405 can be λ / 110, λ / 120, λ / 124, or any width less than λ / 100, and this embodiment does not specifically limit this.

[0086] In another embodiment, Figure 6 As shown, the first magnetic isolation protrusion 410 and the second magnetic isolation protrusion 420 extend obliquely along the thickness direction relative to the circuit board 300. On the premise of forming a fully extended magnetic reflection channel 401, the first magnetic isolation protrusion 410 on the first shell 100 is clamped to the inner side of the second magnetic isolation protrusion 420 of the second shell 200, thereby improving the connection stability of the first shell 100 and the second shell 200.

[0087] Further, if Figure 7As shown, in another alternative embodiment, in addition to providing the second magnetic isolation protrusion 420 on the second shell 200, a third magnetic isolation protrusion 430 is also provided. Viewed along the thickness direction of the circuit board 300, the third magnetic isolation protrusion 430 is spaced apart from the second magnetic isolation protrusion 420. The end of the first magnetic isolation protrusion 420 on the first shell 100 is located between the second magnetic isolation protrusion 420 and the third magnetic isolation protrusion 430, thereby forming a more complex magnetic reflection channel 401 on the outside of the connection structure 400 between the first shell 100 and the second shell 200, so that the controller 10 has better electromagnetic compatibility performance.

[0088] The embodiment of the present utility model further discloses a controller 10, such as Figure 8 As shown, a copper sheet 310 is laid on at least one periphery of the circuit board 300 facing the second shell 200 , and the copper sheet 310 abuts against the inner side of the connection structure 400 of the second shell 200 .

[0089] In this embodiment, copper sheets 310 are laid on the periphery of both sides of the circuit board 300, and are respectively abutted against the inner side of the connecting structure 400 of the first shell 100 and the second shell 200. The copper sheet 310, as a metal with good conductivity, can effectively absorb and reflect electromagnetic waves, thereby forming an electromagnetic shielding layer between the circuit board 300 and the first shell 100 and the second shell 200. It cooperates with the magnetic isolation structure outside the connecting structure 400 to further reduce the interference of the electromagnetic radiation generated by the circuit board 300 on the external environment, and at the same time can also protect the circuit board 300 from interference from external electromagnetic fields.

[0090] Furthermore, the first shell 100 and the second shell 200 are made of conductive materials such as aluminum, polyacetylene, polyaniline or alloy, and the second shell 200 is grounded. Of course, in another alternative embodiment, either one or both of the first shell 100 and the second shell 200 can be grounded, and this embodiment does not specifically limit this.

[0091] Specifically, in this embodiment, the copper sheet 310 on one side surface of the circuit board 300 is grounded through the second shell 200, and the radiation energy on the copper sheet 310 is transferred to the ground through the second shell 200, thereby achieving the effect of reducing the radiation power.

[0092] like Figure 2 and Figure 8 As shown, the embodiment of the present invention further discloses a controller 10, wherein a plurality of connection holes 320 are provided at intervals along the circumference of the circuit board 300 where the copper sheet 310 is laid. It should be noted that the number of connection holes 320 can be two, three, four, five, or any other number. Those skilled in the art can design the connection holes 320 based on actual conditions and specific needs, and this embodiment does not impose any specific limitation on this.

[0093] The first housing 100 and the second housing 200 have multiple fixing holes formed at positions corresponding to the multiple connection holes 320. Multiple fasteners 500 penetrate the corresponding connection holes 320 on the circuit board 300 and the corresponding fixing holes on the first housing 100 and the second housing 200, respectively, to securely connect the first housing 100, the circuit board 300, and the second housing 200. It should be noted that the fasteners 500 may be bolts, screws, or the like commonly used in the art.

[0094] In this embodiment, a plurality of fasteners 500 are respectively passed through the corresponding connection holes 320 on the circuit board 300 and the corresponding fixing holes on the first shell 100 and the second shell 200 to fix the first shell 100, the circuit board 300 and the second shell 200 together. This not only stably installs the circuit board 300 between the first shell 100 and the second shell 200, but also limits the position of the copper sheet 310 on the circuit board 300, thereby improving the connection strength between the circuit board 300 and the copper sheet 310.

[0095] like Figure 1-Figure 3 As shown, in this embodiment, the first shell 100 and the second shell 200 are located on one side in the length direction, and are provided with a connecting plug 600. The connecting plug 600 is electrically connected to the circuit board 300, and the wiring harness of the external electrical device can be connected to the circuit board 300 in the controller 10 through the connecting plug 600; in addition, the controller 10 generates heat when working. If the heat cannot be dissipated in time, it will cause the temperature of the controller 10 to rise, thereby affecting its normal operation. Therefore, a heat dissipation structure 700 is provided on the top of the first shell 100 to achieve heat dissipation of the controller 10. Regarding the specific design of the heat dissipation structure 700, it can be a heat dissipation fin, heat dissipation rib or other commonly used heat dissipation structure arranged on the outside of the first shell 00. Those skilled in the art can design it according to actual conditions and specific needs. This embodiment does not make specific limitations on this.

[0096] Furthermore, as 1 and Figure 2 As shown, in this embodiment, two circuit boards 300 are stacked in the controller 10 along the thickness direction of the circuit board 300, one of the circuit boards 300 is located between the first shell 100 and the second shell 200, and the other circuit board 300 is located between the second shell 200 and the base plate 800. A connection structure 400 similar to that between the first shell 100 and the second shell 200 can be formed between the second shell 200 and the base plate 800. The connection between the second shell 200 and the base plate 800 will not be repeated here.

[0097] An embodiment of the present utility model further discloses a car, comprising any one of the controllers 10 described above.

[0098] Specifically, the controller 10 of this automobile can effectively reduce the electromagnetic signals emitted outward during operation, and also has a strong anti-interference ability against external electromagnetic signals, thereby improving the electromagnetic compatibility performance of the controller 10, and avoiding as much as possible the electromagnetic signals emitted by the controller 10 during operation from affecting the normal operation of other components of the vehicle, thereby effectively improving the safety of the vehicle.

[0099] It should be noted that, in addition to the implementation methods of the present invention described in the above-mentioned specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention is introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation method. On the contrary, the purpose of introducing the utility model in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide an in-depth understanding of the present utility model, the above description contains many specific details, and the present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0100] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0101] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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 operated in a specific orientation. Therefore, they cannot be understood as a limitation on the utility model.

[0102] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0103] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0104] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A controller, comprising a circuit board, and a first housing and a second housing disposed on both sides of the circuit board along the thickness direction of the circuit board. The peripheries of the first housing and the second housing are fixedly connected to each other, and a receiving cavity for installing the circuit board is formed between the first housing and the second housing; characterized in that, The peripheries of the first housing and the second housing respectively extend around the outer edge of the circuit board and are respectively formed with connecting structures that are opposite to each other in the thickness direction of the circuit board; Wherein When viewed along the thickness direction of the circuit board, the inner sides of the connecting structures of the first housing and the second housing clamp the outer edge of the circuit board, and magnetic isolation protruding parts are respectively formed on the outer sides of the connecting structures of the first housing and the second housing. The magnetic isolation protruding part of the first housing and the magnetic isolation protruding part of the second housing are staggeredly arranged in the extending direction of the circuit board; In a cross-sectional view taken along the thickness direction of the circuit board, the inner sides of the connecting structures of the first housing and the second housing respectively abut against the two side surfaces of the circuit board, and a magnetically reflective channel that extends in a curved shape is formed between the magnetic isolation protruding part of the first housing, the magnetic isolation protruding part of the second housing, and the edge of the circuit board; and λ is the wavelength of the highest-frequency electromagnetic wave of the circuit board, and the width of the magnetically reflective channel is less than λ / 20.

2. The controller according to claim 1, wherein Wherein The magnetic isolation protruding part of the first housing and the magnetic isolation protruding part on the second housing extend relative to each other in the thickness direction of the circuit board and respectively extend around the peripheries of the first housing and the second housing for one week.

3. The controller according to claim 2, wherein: A first magnetic isolation protruding part is integrally formed on the first housing, and a second magnetic isolation protruding part is integrally formed on the second housing; When viewed along the thickness direction of the circuit board, the end of the first magnetic isolation protruding part is located between the circuit board and the second magnetic isolation protruding part; and In a cross-sectional view taken along the thickness direction of the circuit board, the magnetically reflective channel includes a first magnetic isolation channel formed between the side wall of the circuit board and the side wall of the first magnetic isolation protruding part, a second magnetic isolation channel formed between the end face of the first magnetic isolation protruding part and the opposite end face of the second housing, and a third magnetic isolation channel formed between the other side wall of the first magnetic isolation protruding part and the side wall of the second magnetic isolation protruding part.

4. The controller according to claim 3, wherein: Wherein In a cross-sectional view taken along the thickness direction of the circuit board, a concave part is formed on the first housing at a position corresponding to the second magnetic isolation protruding part, the second magnetic isolation protruding part extends towards the concave part, and a fourth magnetic isolation channel is formed between the end face of the second magnetic isolation protruding part and the opposite surface of the concave part; wherein, the first magnetic isolation channel, the second magnetic isolation channel, the third magnetic isolation channel, and the fourth magnetic isolation channel are connected to form the magnetically reflective channel in a "ji" shape; and In the thickness direction of the circuit board, the outer contour of the periphery of the first housing and the outer contour of the periphery of the second housing are flush.

5. The controller according to claim 4, wherein: In a cross-sectional view taken along the thickness direction of the circuit board, the channel width of the first magnetic isolation channel is greater than the channel widths of the second magnetic isolation channel, the third magnetic isolation channel, and the fourth magnetic isolation channel; and The channel widths of the second magnetic isolation channel, the third magnetic isolation channel, and the fourth magnetic isolation channel are equal and smaller than λ / 100.

6. The controller according to claim 3, wherein: A third magnetic isolation protrusion is also provided on the second shell. Viewed along the thickness direction of the circuit board, the third magnetic isolation protrusion is spaced apart from the second magnetic isolation protrusion, and the end of the first magnetic isolation protrusion on the first shell is located between the second magnetic isolation protrusion and the third magnetic isolation protrusion.

7. The controller according to any one of claims 1 to 6, wherein: A copper sheet is laid on at least one peripheral edge of the circuit board facing the second shell, and the copper sheet abuts against the inner side of the connecting structure of the second shell.

8. The controller according to claim 7, wherein: The first shell and the second shell are made of conductive materials, and at least the second shell is grounded.

9. The controller according to claim 7, wherein: A plurality of connection holes are arranged at intervals along the circumferential direction at the portion of the circuit board where the copper sheet is laid; The first shell and the second shell form multiple fixing holes at positions corresponding to the multiple connecting holes, and multiple fasteners respectively penetrate the corresponding connecting holes on the circuit board and the corresponding fixing holes on the first shell and the second shell to fix the first shell, the circuit board and the second shell together.

10. An automobile, characterized in that: The device comprises a controller according to any one of claims 1 to 9.

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