Electric control assembly and vehicle-mounted refrigerator
By using support structures and flexible thermal conductivity structures to clamp the circuit board and the heat dissipation board in the electronic control box, the problems of unstable fixing of the electrical control board and insufficient heat dissipation are solved, and the stability and heat dissipation performance of the circuit board are improved.
Patent Information
- Application Number
- CN202421135162.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The fixing method of the electric control board and the heat sink in the existing electronic control box leads to uneven stress, resulting in loosening, falling off of electronic components or cracking of the electric control board substrate. At the same time, the heat dissipation space and contact area are small, affecting the heat dissipation effect.
The circuit board is supported by the first support structure in the box, and the circuit board is clamped with the heat dissipation plate fixed on the opening side of the box through a flexible thermally conductive structure. The heat conduction is carried out by the thermally conductive structure to avoid local stress and increase the contact area to improve stability and heat dissipation performance.
It realizes stable fixation of the circuit board, avoids loosening and cracking problems, and improves heat dissipation performance and heat dissipation area to meet design and use needs.
Smart Images
Figure CN223157442U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle-mounted refrigerators, specifically to the technical field of electronic control components, and particularly to an electronic control component and a vehicle-mounted refrigerator. Background Art
[0002] In the existing electronic control box, the electronic control board and the heat sink are positioned and fixed by screws. On the one hand, the screws exert force on the electronic control board, resulting in uneven stress on the electronic control board, which may cause electronic components to loosen, fall off, or even crack the substrate of the electronic control board. On the other hand, the heat sink is fixed synchronously with the electronic control board, with a small spacing, resulting in a small heat dissipation space and a small contact area between them, affecting the heat dissipation of the electronic control board. Therefore, there is an urgent need for an electronic control box structure to solve the above problems. Summary of the Utility Model
[0003] The main purpose of the utility model is to propose an electronic control component and a vehicle-mounted refrigerator, aiming to optimize the installation structure of the circuit board in the existing electronic control box to improve its stability and heat dissipation performance.
[0004] To achieve the above object, the utility model proposes an electronic control component, wherein the electronic control component includes:
[0005] A box body, provided with a receiving cavity with one end open, and a first support structure is arranged in the receiving cavity;
[0006] A circuit board, including a board body placed on the first support structure; and,
[0007] A heat dissipation component, including a heat dissipation plate fixed on the side of the board body facing the opening and a heat conduction structure placed between the board body and the heat dissipation plate, and the heat conduction structure is used to conduct the heat on the circuit board to the heat dissipation plate.
[0008] In an embodiment, at least on the side of the board body facing the heat dissipation plate, electrical components are arranged, the heat conduction structure is insulated and contacts the electrical components to conduct the heat at the electrical components to the heat dissipation plate.
[0009] In an embodiment, a first through hole is opened on the side of the box body, the electrical component includes a metal plug placed on the edge of the board body, and the metal plug extends out of the box body from the first through hole.
[0010] In an embodiment, an avoidance groove is opened on the side of the heat dissipation plate facing the board body and corresponding to the position of the metal plug.
[0011] In an embodiment, the electrical components are arranged on both sides of the board body.
[0012] In one embodiment, a second through hole is formed at the bottom of the accommodating cavity, a connecting line extends from one side of the plate body toward the bottom of the accommodating cavity, and the connecting line passes through the box body from the second through hole.
[0013] In one embodiment, a second supporting structure is further disposed on the box body, and the second supporting structure is protruded from the first supporting structure in a direction close to the opening, and is used to support the heat sink and be fixed to the heat sink.
[0014] In one embodiment, the first supporting structure includes a screw column located at the edge of the accommodating cavity, the heat sink is provided with a screw hole corresponding to the screw column, and a screw member screwed to the screw column is passed through the screw hole to fix the heat sink to the second supporting structure.
[0015] In one embodiment, the second supporting structure is disposed outside the first supporting structure.
[0016] In one embodiment, the second supporting structure includes a sink opened in the cavity wall of the accommodating cavity.
[0017] In one embodiment, the cavity wall of the accommodating cavity is further provided with a limiting structure spaced apart from the second supporting structure in a direction close to the opening, and the limiting structure is used to limit the movement of the heat dissipation plate away from the accommodating cavity.
[0018] In one embodiment, the limiting structure includes a first limiting rib.
[0019] In one embodiment, the first supporting structure includes a supporting column disposed in the accommodating cavity.
[0020] In one embodiment, the first supporting structure includes supporting ribs disposed on the wall of the accommodating cavity.
[0021] In one embodiment, the cavity wall of the accommodating cavity is further provided with a second limiting convex rib spaced from the first supporting structure in a direction close to the opening, and the second limiting convex rib is used to limit the movement of the plate body toward the opening.
[0022] In one embodiment, the heat-conducting structure includes heat-conducting silicone rubber disposed between the electrical component and the heat sink.
[0023] In one embodiment, a plurality of heat dissipation ribs are protrudingly provided on a side of the heat dissipation plate away from the accommodating cavity.
[0024] The utility model also proposes a vehicle-mounted refrigerator, wherein the vehicle-mounted refrigerator includes the electronic control component, the electronic control component includes a box body, a circuit board and a heat dissipation component, the box body is provided with a accommodating cavity with an opening at one end, and a first supporting structure is arranged in the accommodating cavity; the circuit board includes a plate body placed on the first supporting structure; the heat dissipation component includes a heat dissipation plate fixed to the side of the plate body facing the opening and a heat-conducting structure placed between the plate body and the heat dissipation plate, the heat-conducting structure is used to conduct the heat on the circuit board to the heat dissipation plate.
[0025] In the technical solution of the utility model, the box body of the electric control component is provided with the accommodating cavity, and the accommodating cavity is mainly used to accommodate the circuit board and the heat dissipation plate. Specifically, the box body is provided with the first supporting structure, and the first supporting structure is mainly used to support the board body of the circuit board. The heat dissipation plate is fixed to one side of the box body facing the opening, and clamps the heat-conducting structure with the board body, so that the heat dissipation component and the first supporting structure are located on both sides of the circuit board to clamp and fix the circuit board. The circuit board can be fixed without providing a fixing structure acting on the board body. On the one hand, there is no local force on the circuit board, which avoids the problem of loosening, falling off and even cracking of the circuit board substrate caused by the local force on the circuit board. On the other hand, the heat dissipation plate is fastened to the box body, and the circuit board is fixed by pressing the flexible heat-conducting structure. While ensuring the installation stability of the circuit board, the deformable heat-conducting structure presses on the circuit board to increase the contact area between the heat-conducting structure and the circuit board and the heat dissipation plate, so as to improve the thermal conductivity, thereby improving the heat dissipation performance of the circuit board. In addition, the board body is supported by the first supporting structure, so that a heat dissipation space is reserved on the side of the circuit board facing away from the heat sink, which is convenient for the heat dissipation of the circuit board and improves the heat dissipation performance. It can also be used to accommodate electrical components on the circuit board to meet design and usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0027] Figure 1 A three-dimensional schematic diagram of an embodiment of an electric control component provided by the utility model;
[0028] Figure 2 for Figure 1 Explosion diagram of
[0029] Figure 3 is Figure 1 a three-dimensional schematic diagram of the box body in
[0030] Figure 4 is Figure 1 another three-dimensional schematic diagram of the box body in
[0031] Figure 5 is Figure 1 a three-dimensional schematic diagram of the heat dissipation plate in
[0032] Figure 6 is Figure 1 a cross-sectional schematic diagram of the electronic control component at the screw connection post in
[0033] Explanation of the reference numerals in the drawings:
[0034] 1000, vehicle-mounted refrigerator; 100, electronic control component; 1, box body; 11, accommodating cavity; 111, first support structure; 111a, screw connection post; 111b, support post; 111c, support rib; 112, second support structure; 12, first through hole; 13, second through hole; 14, first limiting rib; 15, second limiting rib; 2, circuit board; 21, board body; 22, electrical component; 221, metal plug-in; 23, connecting wire; 3, heat dissipation component; 31, heat dissipation plate; 311, avoidance groove; 312, screw hole; 313, heat dissipation rib; 32, heat conduction structure.
[0035] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments
[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0038] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0039] In the existing electronic control box, the electronic control board and the heat sink are positioned and fixed by screws. On the one hand, the screws exert force on the electronic control board, resulting in uneven stress on the electronic control board, which may cause problems such as loosening, falling off of electronic components, and even cracking of the substrate of the electronic control board. On the other hand, the heat sink is fixed synchronously with the electronic control board, with a small spacing, resulting in a small heat dissipation space and a small contact area between them, affecting the heat dissipation of the electronic control board. Therefore, there is an urgent need for an electronic control box structure to solve the above problems.
[0040] The present utility model proposes an electronic control assembly. Please refer to Figures 1 to 6 , which is an embodiment of the electronic control assembly proposed in this application. The following will describe the electronic control assembly in detail with reference to specific drawings.
[0041] Please refer to Figures 1 to 6 , the electronic control assembly 100 includes a box body 1, a circuit board 2, and a heat dissipation assembly 3. The box body 1 is provided with a receiving cavity 11 with one end open, and a first support structure 111 is arranged in the receiving cavity 11; the circuit board 2 includes a board body 21 placed on the first support structure 111; the heat dissipation assembly 3 includes a heat dissipation plate 31 fixed on the side of the board body 21 facing the opening and a heat conduction structure 32 placed between the board body 21 and the heat dissipation plate 31. The heat conduction structure 32 is used to conduct the heat on the circuit board 2 to the heat dissipation plate 31.
[0042] In the technical solution of the present utility model, the box body 1 of the electric control component 100 is provided with the accommodating cavity 11, and the accommodating cavity 11 is mainly used to accommodate the circuit board 2 and the heat dissipation plate 31. Specifically, the box body 1 is provided with the first supporting structure 111, and the first supporting structure 111 is mainly used to support the board body 21 of the circuit board 2. The heat dissipation plate 31 is fixed to the side of the box body 1 facing the opening, and clamps the heat-conducting structure 32 with the board body 21, so that the heat dissipation component 3 and the first supporting structure 111 are located on both sides of the circuit board 2 to clamp and fix the circuit board 2, and there is no need to set a function on the board body The fixing structure on the heat sink 21 can fix the circuit board 2. On the one hand, there is no local force on the circuit board 2, which avoids the problem of loosening, falling off, or even cracking of the substrate of the circuit board 2 caused by the local force on the circuit board 2; on the other hand, the heat sink 31 is fastened to the box body 1, and the circuit board 2 is fixed by the flexible heat-conducting structure 32. While ensuring the installation stability of the circuit board 2, the deformable heat-conducting structure 32 presses on the circuit board 2 to increase the contact area between the heat-conducting structure 32 and the circuit board 2 and the heat sink 31, so as to improve the thermal conductivity and thus improve the heat dissipation performance of the circuit board 2. In addition, the board body 21 is supported by the first supporting structure 111, so that the side of the circuit board 2 away from the heat sink 31 is reserved with heat dissipation space, which is convenient for the heat dissipation of the circuit board 2 and improves the heat dissipation performance. At the same time, it can also be used to accommodate the electrical components 22 on the circuit board 2 to meet the design and use requirements.
[0043] Specifically, an electrical component 22 is disposed at least on one side of the plate body 21 facing the heat dissipation plate 31 , and the heat conduction structure 32 is insulated and in contact with the electrical component 22 to conduct heat from the electrical component 22 to the heat dissipation plate 31 . Based on the fact that the plate body 21 is placed on the first supporting structure 111, the above-mentioned heat dissipation space is formed on the side of the plate body 21 facing away from the heat dissipation plate 31, and the heat-conducting structure 32 is insulated, so that the electrical component 22 can be arranged on both sides of the plate body 21. Specifically, in the embodiment of the arrangement of the electrical component 22, combined with the heat-conducting structure 32 with an insulated arrangement, it is at least ensured that the electrical component 22 is arranged on the side of the plate body 21 facing the heat dissipation plate 31, so that the heat-conducting structure 32 respectively supports the electrical component 22 and the heat dissipation plate 31, so that the heat-conducting structure 32 is in full contact with the electrical component 22, thereby increasing its contact area and improving its thermal conductivity, thereby directly absorbing the heat generated by the electrical component 22 and conducting it to the heat dissipation plate 31 for dissipation, thereby meeting the design and use requirements for improving the heat dissipation performance. Based on this, in one embodiment of the electrical component 22 of the present application, the electrical component 22 is only arranged on the side of the plate body 21 facing the heat sink 31, and in another embodiment of the electrical component 22 of the present application, the electrical component 22 is arranged on both sides of the plate body 21. Of course, by only arranging the electrical component 22 on the side of the plate body 21 away from the heat sink 31, the heat dissipation performance can be improved to a certain extent through the arrangement of the heat-conducting structure 32, but the effect is relatively poor and does not meet the main design and use requirements of the present application. Specifically, the heat-conducting structure 32 described in the present application is arranged as a heat-conducting silicone placed between the electrical component 22 and the heat sink 31.
[0044] Specifically, the side of the box body 1 is provided with a first through hole 12, and the electrical component 22 includes a metal plug-in 221 disposed at the edge of the board body 21, and the metal plug-in 221 extends out of the box body 1 from the first through hole 12. In order to meet the connection requirements of the electric control component 100 with the external structure, the first through hole 12 is further provided on the side of the box body 1 in the present application, and the electrical component 22 located on the side of the board body 21 facing the heat dissipation plate 31 includes the metal plug-in 221 disposed at the edge of the board body 21, and the metal plug-in 221 extends out of the box body 1 from the first through hole 12. It should be noted that a plurality of the first through holes 12 are arranged at intervals, and a plurality of the corresponding metal plug-ins 221 are also arranged at intervals. At this time, the heat-conducting structure 32 not only performs contact heat conduction, but also plays a certain role of spacing insulation to avoid contact between adjacent metal plug-ins 221.
[0045] In addition, an avoidance groove 311 is formed on one side of the heat dissipation plate 31 facing the plate body 21 and corresponding to the position of the metal insert 221. Based on the flexible arrangement of the heat conduction structure 32 to abut against the heat dissipation plate 31 and the circuit board 2 to fix the circuit board 2. When the metal insert 221 is provided on the circuit board 2, the distance between the metal insert 221 and the heat dissipation plate 31 is relatively small. If the electronic control component 100 is pressed or the heat conduction structure 32 ages, the circuit board 2 may move closer to the heat dissipation plate 31, causing the metal insert 221 to contact and short-circuit with the heat dissipation plate 31. Therefore, to avoid the above situation, the present application also forms the avoidance groove 311 at the position of the heat dissipation plate 31 corresponding to the metal insert 221 to increase the distance between the heat dissipation plate 31 and the metal insert 221.
[0046] In addition, a second through hole 13 is formed at the bottom of the accommodation cavity 11. A connection line 23 extends from one side of the plate body 21 facing the bottom of the accommodation cavity 11, and the connection line 23 passes through the box body 1 from the second through hole 13. Similarly, to meet the connection requirements between the electronic control component 100 and the external structure, the present application also forms the second through hole 13 at the bottom of the box body 1, and the connection line 23 extends from the plate body 21, and the connection line 23 passes through the box body 1 from the second through hole 13 for the connection between the electronic control component 100 and the external structure. On this basis, the second through hole 13 communicates with the above-mentioned heat dissipation space and the outside of the electronic control component 100, and also has a certain heat dissipation effect.
[0047] In addition, a second support structure 112 is further provided on the box body 1. The second support structure 112 protrudes from the first support structure 111 in the direction close to the opening to support the heat dissipation plate 31 and fix it to the heat dissipation plate 31. Based on the heat conduction structure 32, the heat dissipation plate 31 can be fixed to the box body 1 by pressing against the heat conduction structure 32. However, in this setting method, the position of the heat dissipation plate 31 on the box body 1 cannot be accurately positioned, resulting in poor consistency of the electronic control component 100. And during the assembly process, the heat dissipation plate 31 may be inclined, causing its distance from the circuit board 2 to be reduced, which is likely to cause the circuit board 2 to contact and short-circuit with the heat dissipation plate 31. Therefore, the present application also provides the second support structure 112 on the box body 1 to support and position the heat dissipation plate 31 to avoid the above problems.
[0048] Specifically, the second support structure 112 is disposed around the first support structure 111. The positional relationship between the first support structure 111 and the second support structure 112 is not limited. Ensuring that the second support structure 112 protrudes from the first support structure 111 can meet the requirements. However, when a part of the second support structure 112 is located within the enclosure range of the first support structure 111, a corresponding avoidance area needs to be provided on the circuit board 2 to avoid the second support structure 112, which affects the structural design of the circuit board 2 and the layout of the electrical components 22. To avoid the above problems, in this embodiment, the second support structure 112 is disposed around the first support structure 111 so that the circuit board 2 is placed within the area enclosed by the second support structure 112, and the placement of the circuit board 2 is not interfered with by the second support structure 112. In this way, there is no need to provide an area on the circuit board 2 to avoid the second support structure 112, thereby reducing the limitation on the structural setting of the circuit board 2 and the layout of the electrical components 22 thereon, and facilitating the formation of the structure of the circuit board 2.
[0049] Specifically, the second support structure 112 includes a counterbore formed in the wall of the accommodation cavity 11. The specific setting structure of the second support structure 112 can be various, as long as it can meet the above requirements. For example, it can be a support structure independently disposed in the accommodation cavity 11, a support protrusion protruding from the wall of the accommodation cavity 11, etc., which are not limited herein. In this embodiment, the second support structure 112 is set as the counterbore on the wall of the accommodation cavity 11, that is, the counterbore at the open end of the box body 1. Such a setting can avoid blocking the circuit board 2 placed in the accommodation cavity 11, and has a simple structure, is easy to set, and has a good effect.
[0050] Further, a limiting structure is provided on the cavity wall of the accommodating cavity 11 and spaced from the second support structure 112 in the direction close to the opening. The limiting structure is used to limit the heat dissipation plate 31 from moving away from the accommodating cavity 11. It can be understood that the fixing process of the heat dissipation plate 31 is generally to place the heat dissipation plate 31 on the second support structure 112 and then fix the heat dissipation plate 31 so that it is fixed to the second support structure 112. In this process, if only an additional fixing structure is used to fix the heat dissipation plate 31, the setting points of the fixing structure must surround the outer periphery of the heat dissipation plate 31 to ensure the stability of the fixing, which is obviously cumbersome. In this embodiment, the limiting structure is provided on the cavity wall of the accommodating cavity 11. Specifically, the limiting structure is provided on one side wall of the accommodating cavity 11 so as not to affect the placement of the heat dissipation plate 31. After the heat dissipation plate 31 is placed on the second support structure 112, the limiting structure can limit the heat dissipation plate 31 from moving away from the accommodating cavity 11 on one side of the heat dissipation plate 31. On the one hand, it has the effect of pre-fixing, and on the other hand, it can reduce the number of the above-mentioned fixing structures. For example, setting the above-mentioned fixing structure on the opposite side of the heat dissipation plate 31 limited by the limiting structure can limit and fix the opposite sides of the heat dissipation plate 31, so that the heat dissipation plate 31 is limited and fixed. Compared with setting the above-mentioned fixing structure around the heat dissipation plate 31, obviously, on the basis of the same fixing points, the limiting structure in this embodiment can be used as the fixing structure of the fixing points, and the number of the above-mentioned additionally provided fixing structures can be reduced, so as to facilitate the fixing operation of the heat dissipation plate 31.
[0051] Further, the limiting structure includes a first limiting rib 14. The limiting structure can be a limiting boss protruding from the cavity wall of the accommodating cavity 11, a detachable independent limiting member, etc., which is not limited herein as long as the above requirements can be met. In this embodiment, the limiting structure is set as the first limiting rib 14, and the first limiting rib 14 extends in the direction away from the heat dissipation plate 31, so that its structure is simple and has high strength.
[0052] In addition, the first support structure 111 includes a support column 111b disposed in the accommodation cavity 11. The specific form of the first support structure 111 can also be various. For example, a support member independently disposed in the accommodation cavity 11, a support boss disposed on the cavity wall of the accommodation cavity 11, and a counterbore structure similar to the embodiment of the second support structure 112, etc., as long as the use requirements are met. In this application, the first support structure 111 is set as the support column 111b located in the accommodation cavity 11 and the support rib 111c located on the cavity wall of the accommodation cavity 11 to meet the support requirements. Specifically, the support column 111b includes a screwing column 111a located at the edge of the accommodation cavity 11. The screwing column 111a is used to fix the heat dissipation plate 31 to the second support structure 112 through a screwing member. In addition to supporting the circuit board 2, in this embodiment, the support column 111b further includes the screwing column 111a, so that the heat dissipation plate 31 supported on the second support structure 112 can be threadedly connected to the screwing column 111a through a screwing member, thereby fixing the heat dissipation plate 31 to the second support structure 112 to meet the structural requirements. On this basis, without affecting the supporting effect of the screwing column 111a on the circuit board 2, it can be understood at this time that the circuit board 2 must avoid the screwing member. If the screwing column 111a is disposed in the middle of the accommodation cavity 11, an avoidance hole needs to be opened in the middle of the circuit board 2. Generally, complex circuit structures and electrical components 22 are distributed in the middle of the circuit board 2. Such a setting will affect the structural setting of the circuit board 2 and the layout of the circuits and electrical components 22 thereon. Generally, no circuits and electrical components 22 are laid out or a small amount of them are laid out at the edge of the circuit board 2. Setting an avoidance structure at the edge of the circuit board 2 has less impact. Therefore, the screwing column 111a in this embodiment is disposed at the edge of the accommodation cavity 11 to avoid the above problem of affecting the structural setting of the circuit board 2. And at this time, the avoidance structure on the circuit board 2 can be an avoidance hole or an avoidance notch, without affecting the support of the screwing column 111a on the circuit board 2.
[0053] In addition, if the support columns 111b are all the screw columns 111a located at the edge of the accommodation cavity 11, combined with the support ribs 111c located on the cavity wall of the accommodation cavity 11, they can only support the edge of the circuit board 2. As described above, the circuits and the electrical components 22 are generally arranged in the middle of the circuit board 2, that is, generally the middle of the circuit board 2 is heavier. To prevent the circuit board 2 from deforming, in this embodiment, support columns 111b are also provided in the middle of the accommodation cavity 11. Similarly, according to the above description, the support columns 111b located in the middle of the accommodation cavity 11 are not suitable to be set as the screw columns 111a for fixing the heat dissipation plate 31. Of course, the structure of the support columns 111b can be set as the screw columns 111a here, but it is only necessary not to use them for screw connection and fixation, and only use their supporting effect on the circuit board 2. Of course, even if the circuit board 2 itself has sufficient strength and will not deform, the support columns 111b located in the middle of the accommodation cavity 11 can also be provided to improve the stability of the first support structure 111 in supporting the circuit board 2.
[0054] In addition, a second limiting rib 15 is provided on the cavity wall of the accommodation cavity 11 at intervals with respect to the first support structure 111 in the direction close to the opening. The second limiting rib 15 is used to limit the movement of the plate body 21 towards the opening. Similar to the first limiting rib 14 for restricting the movement of the heat dissipation plate 31 described above, in this embodiment, the second limiting rib 15 is provided on one side cavity wall of the accommodation cavity 11. On the one hand, it does not affect the placement of the circuit board 2 in the accommodation cavity 11, and on the other hand, it can pre-fix the circuit board 2 to facilitate the subsequent placement and fixation of the heat dissipation plate 31. Of course, the second limiting rib 15 is the same as the first limiting rib 14, and it extends in the direction away from the circuit board 2, so that its structure is simple and has high strength. In addition, since the heat dissipation plate 31 is provided at the opening of the accommodation cavity 11, if the second limiting rib 15 extends to the opening, it will surely interfere with the heat dissipation plate 31. At this time, an avoidance structure can be opened on the heat dissipation plate 31, or the length of the second limiting rib 15 can be shortened to avoid its extension to interfere with the heat dissipation plate 31. This is not limited here, and both can meet the structural requirements. In this embodiment, mainly the length of the second limiting rib 15 is shortened to avoid interference with the heat dissipation plate 31.
[0055] In addition, a plurality of heat dissipation ribs 313 protrude from the side of the heat dissipation plate 31 facing away from the accommodation cavity 11. On the basis of the heat dissipation performance of the material of the heat dissipation plate 31 itself, in this embodiment, a plurality of the heat dissipation ribs 313 are also provided on the heat dissipation plate 31 to increase the heat dissipation area and further improve the heat dissipation performance to meet the functional requirements of this application.
[0056] The present utility model further provides a vehicle-mounted refrigerator 1000, which includes the electric control component 100. For the specific structure of the electric control component 100, reference may be made to the above-mentioned embodiments. Since the vehicle-mounted refrigerator 1000 adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated herein one by one.
[0057] The above description is only an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. An electric control component, characterized in that, include: The box body is provided with a receiving cavity with one end open, and a first supporting structure is arranged in the receiving cavity; A circuit board, comprising a board body placed on the first supporting structure; and A heat dissipation assembly, comprising a heat dissipation plate fixed to a side of the board body facing the opening and a heat conduction structure disposed between the board body and the heat dissipation plate, wherein the heat conduction structure is used to conduct heat on the circuit board to the heat dissipation plate; Wherein, a second supporting structure is further provided on the box body, and the second supporting structure is provided to protrude from the first supporting structure in a direction close to the opening, and is used to support the heat dissipation plate and be fixed to the heat dissipation plate; The cavity wall of the accommodating cavity is further provided with a limiting structure spaced apart from the second supporting structure in a direction close to the opening, and the limiting structure is used to limit the movement of the heat dissipation plate away from the accommodating cavity.
2. The electronic control component according to claim 1, wherein An electrical component is arranged at least on one side of the plate body facing the heat dissipation plate, and the heat-conducting structure is insulated and in contact with the electrical component to conduct the heat at the electrical component to the heat dissipation plate.
3. The electronic control component according to claim 2, wherein A first through hole is opened on the side of the box body, and the electrical component includes a metal plug-in placed on the edge of the board body, and the metal plug-in extends out of the box body from the first through hole.
4. The electronic control component according to claim 3, wherein A avoidance groove is provided on one side of the heat dissipation plate facing the plate body and corresponding to the position of the metal plug-in.
5. The electronic control component according to claim 2, characterized in that, The electrical components are arranged on both sides of the plate body.
6. The electronic control component according to claim 1, characterized in that A second through hole is formed at the bottom of the accommodating cavity, a connecting line extends from one side of the plate body toward the bottom of the accommodating cavity, and the connecting line passes through the box body from the second through hole.
7. The electronic control component according to claim 1, characterized in that, The first supporting structure includes a screw connection column located at the edge of the accommodating cavity, and the heat dissipation plate is provided with a screw connection hole corresponding to the screw connection column. The screw connection hole is penetrated by a screw connection piece screwed to the screw connection column to fix the heat dissipation plate to the second supporting structure.
8. The electronic control component according to claim 1, characterized in that, The second supporting structure is arranged on the periphery of the first supporting structure.
9. The electronic control component according to claim 8, wherein, The second supporting structure includes a sinking platform opened on the cavity wall of the accommodating cavity.
10. The electronic control component according to claim 1, characterized in that, The limiting structure includes a first limiting rib.
11. The electronic control component according to claim 1, wherein, The first supporting structure includes a supporting column disposed in the accommodating cavity.
12. The electronic control component according to claim 1, wherein The first supporting structure includes supporting ribs arranged on the wall of the accommodating cavity.
13. The electronic control component according to claim 1, wherein, The cavity wall of the accommodating cavity is further provided with a second limiting convex rib spaced from the first supporting structure in a direction close to the opening, and the second limiting convex rib is used to limit the movement of the plate body toward the opening.
14. The electronic control component according to any one of claims 2 to 5, characterized in that, The heat-conducting structure includes heat-conducting silica gel placed between the electrical element and the heat sink.
15. The electronic control component according to any one of claims 1 to 13, characterized in that A plurality of heat dissipation ribs are protrudingly provided on one side of the heat dissipation plate away from the accommodating cavity.
16. A vehicle-mounted refrigerator, characterized in that, Comprising an electronic control component as claimed in any one of claims 1 to 15.