Electric control box, electric control assembly and vehicle-mounted refrigerator

Abstract

The electric control box comprises a box body, a first supporting structure and a second supporting structure, the box body is provided with a containing cavity, one end of the containing cavity is open, and the other end of the containing cavity is open. The first supporting structure is arranged in the accommodating cavity and is used for supporting a circuit board; the second supporting structure protrudes out of the first supporting structure in the direction close to the opening and is used for supporting the heat dissipation plate and being fixed to the heat dissipation plate. The utility model aims to solve the problem that the circuit board is stressed greatly due to the mode of fixing the circuit board in the conventional electric control box.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle refrigerators, in particular to the technical field of electric control components, and specifically to an electric control box, an electric control component and a vehicle refrigerator. Background Art

[0002] The existing electric control box uses screws to position and fix the electric control board and the heat sink. On the one hand, the screws apply force to the electric control board, which causes uneven stress on the electric control board, resulting in loosening, falling off of electronic components, and even cracking of the electric control board substrate. On the other hand, the heat sink is fixed synchronously with the electric control board, which limits the structural design of the electric control board, so that the electric control board can only use a single-sided patch method, which affects the heat dissipation of the electric control board. Therefore, an electric control box structure is urgently needed to solve the above problems. Utility Model Content

[0003] The main purpose of the utility model is to provide an electric control box, an electric control assembly and a vehicle refrigerator, aiming to solve the problem that the circuit board is subjected to greater force in the existing way of fixing the circuit board in the electric control box.

[0004] To achieve the above object, the utility model provides an electric control box, wherein the electric control box comprises:

[0005] The box body is provided with a containing cavity with an opening at one end;

[0006] A first supporting structure is disposed in the accommodating cavity to support the circuit board; and

[0007] The second supporting structure is arranged 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.

[0008] Optionally, the second supporting structure is arranged on the periphery of the first supporting structure.

[0009] Optionally, the second supporting structure includes a sink opened in the cavity wall of the accommodating cavity.

[0010] Optionally, 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.

[0011] Optionally, the limiting structure includes a first limiting rib.

[0012] Optionally, the first supporting structure includes a supporting column disposed in the accommodating cavity.

[0013] Optionally, the support column includes a screw column located at an edge of the accommodating cavity, and the screw column is used to fix the heat dissipation plate to the second support structure through a screw member.

[0014] Optionally, the first supporting structure includes supporting ribs arranged on the wall of the accommodating cavity.

[0015] Optionally, 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 circuit board toward the opening.

[0016] The utility model also proposes an electric control component, wherein the electric control component includes an electric control box, a heat sink and a circuit board, the electric control box includes a box body, a first supporting structure and a second supporting structure, the box body is provided with a accommodating cavity with an opening at one end; the first supporting structure is arranged in the accommodating cavity to support the circuit board; the second supporting structure protrudes from the first supporting structure in a direction close to the opening, to support the heat sink and be fixed to the heat sink; the heat sink is fixed to the second supporting structure; the circuit board is placed on the first supporting structure and is limited by the heat sink.

[0017] Optionally, the circuit board includes a board body and an electrical component fixed to the board body, the board body is placed on the first supporting structure, and the electrical component is at least arranged on one side of the board body.

[0018] Optionally, the plate body and the heat dissipation plate define a containing area, and the electrical component is at least arranged in the containing area.

[0019] Optionally, a heat-conducting structure is provided between the electrical component located in the accommodating area and the heat dissipation plate.

[0020] Optionally, the heat-conducting structure includes heat-conducting silica gel coated between the electrical component and the heat dissipation plate.

[0021] Optionally, the electrical components are distributed on both sides of the board.

[0022] Optionally, 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.

[0023] The utility model also proposes a vehicle-mounted refrigerator, wherein the vehicle-mounted refrigerator includes the electronic control component, the electronic control component includes an electronic control box, a heat sink and a circuit board, the electronic control box includes a box body, a first supporting structure and a second supporting structure, the box body is provided with a accommodating cavity with an opening at one end; the first supporting structure is arranged in the accommodating cavity to support the circuit board; the second supporting structure protrudes from the first supporting structure in a direction close to the opening, to support the heat sink and be fixed to the heat sink; the heat sink is fixed to the second supporting structure; the circuit board is placed on the first supporting structure and is limited by the heat sink.

[0024] In the technical solution of the utility model, the box body of the electric control box is provided with the accommodating cavity, and the accommodating cavity is mainly used to accommodate the circuit board and the heat sink. Specifically, the box body is provided with the first supporting structure and the second supporting structure, the first supporting structure is mainly used to support the circuit board, and the second supporting structure is mainly used to support the heat sink, and the second supporting structure is protruding from the first supporting structure in the direction close to the opening, so that the heat sink and the first supporting structure are located on both sides of the circuit board, and the heat sink is fixed to the second supporting structure, so that the heat sink and the first supporting structure clamp the circuit board, and the circuit board can be fixed without providing a fixing structure acting on the circuit board. On the one hand, there is no local force on the circuit board, which avoids the loosening and falling off of electrical components and even the opening of the circuit board substrate caused by the local force on the circuit board. On the other hand, the heat sink is fastened to the box body to ensure the stability of the overall installation of the electric control box. Compared with the existing structure that requires the heat sink and the circuit board to be fastened simultaneously, there can be a certain distance between the heat sink and the circuit board, which will not cause restrictions on the layout of the electrical components on the circuit board. By reasonably setting the height difference between the first support structure and the second support structure and the height difference between the first support structure and the bottom of the accommodating cavity, the electrical components can be arranged on both sides of the circuit board, avoiding the restrictions of the circuit board structure design, and double-sided patch can be performed; on the other hand, based on the above-mentioned electrical component arrangement method that can be double-sided patched, electrical components can also be arranged between the circuit board and the heat sink. At this time, the electrical components can directly contact the heat sink for heat dissipation. Compared with the existing fastening method where the electrical components on the circuit board can only be arranged on the side facing away from the heat sink, the heat dissipation performance of the electrical components is better. In this way, the design and use requirements are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1 A three-dimensional schematic diagram of an embodiment of an electric control component provided by the utility model;

[0027] Figure 2 for Figure 1 A three-dimensional schematic diagram of the electric control box;

[0028] Figure 3 for Figure 1 Another three-dimensional schematic diagram of the electric control box;

[0029] Figure 4 for Figure 1 A three-dimensional schematic diagram of a heat sink in FIG.

[0030] Figure 5 for Figure 1 Schematic diagram of the cross section of the electronic control component at the screw connection post.

[0031] Description of Figure Numbers:

[0032] Label name Label name 1000 Electronic control components 211 Bolt post 100 Electric control box 22 Support ribs 1 Box 3 Second support structure 11 Accommodation cavity 31 Sunken Platform 111 Limiting structure 200 Heat sink 111a The first limiting rib 201 Screw hole 112 The second limiting rib 300 Circuit Board 2 First support structure 301 plate body 21 Support column 302 Electrical components

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0037] The existing electric control box uses screws to position and fix the electric control board and the heat sink. On the one hand, the screws apply force to the electric control board, which causes uneven stress on the electric control board, resulting in loosening, falling off of electronic components, and even cracking of the electric control board substrate. On the other hand, the heat sink is fixed synchronously with the electric control board, which limits the structural design of the electric control board, so that the electric control board can only use a single-sided patch method, which affects the heat dissipation of the electric control board. Therefore, an electric control box structure is urgently needed to solve the above problems.

[0038] In view of this, the utility model provides an electric control box. Figures 1 to 5 The embodiment of the electric control box provided by the utility model will be described below in conjunction with specific drawings.

[0039] See also Figures 1 to 5 The electric control box 100 includes a box body 1, a first supporting structure 2 and a second supporting structure 3. The box body 1 is provided with a receiving cavity 11 with an opening at one end; the first supporting structure 2 is arranged in the receiving cavity 11 to support the circuit board 300; the second supporting structure 3 is arranged to protrude from the first supporting structure 2 in the direction close to the opening, to support the heat sink 200 and be fixed to the heat sink 200.

[0040] In the technical solution of the present utility model, the box body 1 of the electric control box 100 is provided with the accommodating cavity 11, and the accommodating cavity 11 is mainly used to accommodate the circuit board 300 and the heat sink 200. Specifically, the box body 1 is provided with the first supporting structure 2 and the second supporting structure 3, the first supporting structure 2 is mainly used to support the circuit board 300, the second supporting structure 3 is mainly used to support the heat sink 200, and the second supporting structure 3 is protruding from the first supporting structure 2 in the direction close to the opening, so that the heat sink 200 and the first supporting structure 2 are located on both sides of the circuit board 300, and the heat sink 200 is fixed to the second supporting structure 3, so that the heat sink 200 and the first supporting structure 2 clamp the circuit board 300, and the circuit board 300 can be fixed without providing a fixing structure acting on the circuit board 300. On the one hand, there is no local force on the circuit board 300, which avoids the problem of loosening, falling off of the electrical components 302 and even cracking of the circuit board 300 substrate caused by the local force on the circuit board 300. On the other hand, the heat sink 200 is fastened to the box body 1 to ensure the stability of the overall installation of the electric control box 100. Compared with the existing structure that requires the heat sink 200 and the circuit board 300 to be fastened simultaneously, there can be a certain interval between the heat sink 200 and the circuit board 300, so that there will be no layout restriction on the electrical components 302 on the circuit board 300. By reasonably setting the height difference between the first supporting structure 2 and the second supporting structure 3 and the height difference between the first supporting structure 2 and the bottom of the accommodating cavity 11, the electrical components 302 can be arranged on both sides of the circuit board 300, avoiding the structural design restriction of the circuit board 300, and double-sided patch can be performed; on the other hand, based on the above-mentioned arrangement method of the electrical components 302 that can be double-sided patched, the electrical components 302 can also be arranged between the circuit board 300 and the heat sink 200. At this time, the electrical components 302 can be in direct contact with the heat sink 200 for heat dissipation. Compared with the situation in which the electrical components 302 on the circuit board 300 in the existing fastening method can only be arranged on the side facing away from the heat sink 200, the heat dissipation performance of the electrical components 302 is better. In this way, the design and use requirements are met.

[0041] Specifically, the second support structure 3 is arranged at the periphery of the first support structure 2. The positional relationship between the first support structure 2 and the second support structure 3 may not be limited, and the requirement can be met by ensuring that the second support structure 3 protrudes from the first support structure 2. However, when the second support structure 3 is partially located within the enclosed range of the first support structure 2, a corresponding avoidance area needs to be set on the circuit board 300 to avoid the second support structure 3, which affects the structural design of the circuit board 300 and the layout of the electrical components 302. To avoid the above problems, in this embodiment, the second support structure 3 is arranged at the periphery of the first support structure 2, so that the circuit board 300 is placed in the area enclosed by the second support structure 3, and the placement of the circuit board 300 is not interfered by the second support structure 3. In this way, there is no need to set an area on the circuit board 300 to avoid the second support structure 3, so as to reduce the restrictions on the structural setting of the circuit board 300 and the layout of the electrical components 302 thereon, and facilitate the structural molding of the circuit board 300.

[0042] Furthermore, the second supporting structure 3 includes a sink 31 opened on the cavity wall of the accommodating cavity 11. The specific setting structure of the second supporting structure 3 can be various, as long as it can meet the above-mentioned requirements, for example, it can be a supporting structure independently arranged in the accommodating cavity 11, a supporting protrusion protruding from the cavity wall of the accommodating cavity 11, etc., which are not limited here. In this embodiment, the second supporting structure 3 is set as the sink 31 located on the cavity wall of the accommodating cavity 11, that is, the sink 31 located at the open end of the box body 1. Such a setting can avoid obstruction to the circuit board 300 placed in the accommodating cavity 11, and the structure is simple, convenient to set and has a good effect.

[0043] In addition, the cavity wall of the accommodating cavity 11 is also provided with a limiting structure 111 spaced from the second supporting structure 3 in the direction close to the opening, and the limiting structure 111 is used to limit the movement of the heat sink 200 away from the accommodating cavity 11. It can be understood that the fixing process of the heat sink 200 is generally to place the heat sink 200 on the second supporting structure 3, and then fix the heat sink 200 so that it is fixed to the second supporting structure 3. In this process, if the heat sink 200 is fixed only by an additional fixing structure, the setting point of the fixing structure must surround the outer periphery of the heat sink 200 to ensure the stability of the fixation, which is obviously more cumbersome. In this embodiment, the limiting structure 111 is provided on the cavity wall of the accommodating cavity 11. Specifically, the limiting structure 111 is provided on one side of the cavity wall of the accommodating cavity 11 so as not to affect the placement of the heat sink 200. When the heat sink 200 is placed on the second supporting structure 3, the The limiting structure 111 can limit the movement of the heat sink 200 away from the accommodating cavity 11 on one side of the heat sink 200. On the one hand, it has a pre-fixing effect, and on the other hand, it can reduce the number of the above-mentioned fixing structures. For example, by setting the above-mentioned fixing structure on the opposite side of the side of the heat sink 200 limited by the limiting structure 111, the opposite sides of the heat sink 200 can be limited and fixed, thereby limiting and fixing the heat sink 200. Compared with setting the above-mentioned fixing structure around the heat sink 200, it is obvious that on the basis of the same fixed point, the limiting structure 111 in this embodiment can be used as a fixing structure for the fixed point, and the number of the above-mentioned additional fixing structures can be reduced to facilitate the fixing operation of the heat sink 200.

[0044] Furthermore, the limiting structure 111 includes a first limiting convex rib 111a. The limiting structure 111 can be a limiting boss convexly provided on the cavity wall of the accommodating cavity 11, a detachable independent limiting member, etc., which is not limited here, and can meet the above requirements. In this embodiment, the limiting structure 111 is set as the first limiting convex rib 111a, and the first limiting convex rib 111a extends in a direction away from the heat sink 200, so that its structure is simple and strong.

[0045] In addition, the first support structure 2 includes a support column 21 disposed in the accommodating cavity 11. The specific form of the first support structure 2 can also be various, such as a support member independently disposed in the accommodating cavity 11, a support boss disposed on the cavity wall of the accommodating cavity 11, and a sink structure similar to the embodiment of the second support structure 3, etc., as long as the use requirements are met. In the present application, the first support structure 2 is configured as the support column 21 located in the accommodating cavity 11 and the support rib 22 located on the cavity wall of the accommodating cavity 11 to meet the support requirements. Specifically, the support column 21 includes a screw column 211 located at the edge of the accommodating cavity 11, and the screw column 211 is used to fix the heat sink 200 to the second support structure 3 through a screw member. In addition to supporting the circuit board 300, the support column 21, in this embodiment, also includes the screw column 211, so that the heat sink 200 supported on the second supporting structure 3 can be threadedly connected to the screw column 211 via a screw connector, thereby fixing the heat sink 200 to the second supporting structure 3 to meet structural requirements. On this basis, the supporting effect of the screw connection column 211 on the circuit board 300 is not affected. It can be understood at this time that the circuit board 300 must avoid the screw connection. If the screw connection column 211 is set in the middle of the accommodating cavity 11, an avoidance hole needs to be opened in the middle of the circuit board 300. Generally, complex circuit structures and electrical components 302 are distributed in the middle of the circuit board 300. Such a setting will affect the structural setting of the circuit board 300 and the layout of the circuits and electrical components 302 thereon. Generally, the edges of the circuit board 300 do not have circuits and electrical components 302 or only have a small amount of layout. The avoidance structure set at the edge of the circuit board 300 has little effect. Therefore, the screw connection column 211 in this embodiment is set at the edge of the accommodating cavity 11 to avoid the above-mentioned problem affecting the structural setting of the circuit board 300. At this time, the avoidance structure on the circuit board 300 can be an avoidance hole or an avoidance gap, which does not affect the support of the screw connection column 211 for the circuit board 300.

[0046] In addition, if the support columns 21 are all the screw columns 211 located at the edge of the accommodating cavity 11, combined with the support ribs 22 located on the cavity wall of the accommodating cavity 11, they can only support the edge of the circuit board 300. The above description has that the circuit and electrical components 302 are generally arranged in the middle part of the circuit board 300, that is, the middle part of the general circuit board 300 is heavier. In order to avoid deformation of the circuit board 300, the support column 21 is also arranged in the middle part of the accommodating cavity 11 in this embodiment. Similarly, according to the above description, the support column 21 located in the middle part of the accommodating cavity 11 is not suitable for being set as the screw column 211 for fixing the heat sink 200. Of course, it is also acceptable to set the structure of the support column 21 as the screw column 211 here, but it can be used without screwing and fixing, and only its supporting function for the circuit board 300 can be used. Of course, even if the circuit board 300 itself is strong enough and will not deform, the support column 21 may be disposed in the middle of the accommodating cavity 11 to enhance the stability of the first supporting structure 2 supporting the circuit board 300 .

[0047] Furthermore, the cavity wall of the accommodating cavity 11 is also provided with a second limiting rib 112 spaced from the first supporting structure 2 in a direction close to the opening, and the second limiting rib 112 is used to limit the movement of the circuit board 300 toward the opening. Similar to the first limiting rib 111a for limiting the movement of the heat sink 200 described above, in this embodiment, the second limiting rib 112 is provided on one side of the cavity wall of the accommodating cavity 11. On the one hand, it does not affect the placement of the circuit board 300 in the accommodating cavity 11, and on the other hand, the circuit board 300 can be pre-fixed to facilitate the subsequent placement and fixation of the heat sink 200. Of course, the second limiting rib 112 is the same as the first limiting rib 111a, and it is extended in a direction away from the circuit board 300, so that its structure is simple and strong. In addition, since the heat sink 200 is disposed at the opening of the accommodating cavity 11, if the second limiting rib 112 extends to the opening, it will inevitably interfere with the heat sink 200. At this time, an avoidance structure can be provided on the heat sink 200, or the length of the second limiting rib 112 can be shortened to avoid it extending to interfere with the heat sink 200. No limitation is made here, and all can meet the structural requirements. In this embodiment, the main purpose is to shorten the length of the second limiting rib 112 to avoid interference with the heat sink 200.

[0048] The utility model also proposes an electric control assembly 1000, which includes an electric control box 100, a heat sink 200 and a circuit board 300. The heat sink 200 is fixed to the second support structure 3, and the circuit board 300 is placed on the first support structure 2 and limited by the heat sink 200. The specific structure of the electric control box 100 refers to the above embodiment. Since the electric control assembly 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0049] Specifically, the circuit board 300 includes a board body 301 and an electrical component 302 fixed to the board body 301, the board body 301 is placed on the first supporting structure 2, and the electrical component 302 is at least arranged on one side of the board body 301. The circuit board 300 including the board body 301 and the electrical component 302 arranged on the board body 301 has been described above, and will not be repeated here. Based on the structure of the heat dissipation plate 200 and the first supporting structure 2 limiting the circuit board 300, the height difference between the first supporting structure 2 and the second supporting structure 3, and the height difference between the first supporting structure 2 and the bottom of the accommodating cavity 11 are set accordingly, so that the space on both sides of the circuit board 300 can be guaranteed to meet the setting of the electrical component 302. The specific side of the circuit board 300 on which the electrical component 302 is set, or both sides, is mainly based on actual needs, and is not limited here. The structure of the present application can meet all requirements.

[0050] Specifically, the plate body 301 and the heat sink 200 define a receiving area, and the electrical component 302 is at least arranged in the receiving area. In order to meet the good heat dissipation of the electrical component 302 described above, in this embodiment, at least the receiving area is defined between the plate body 301 and the heat sink 200, that is, the height difference between the first support structure 2 and the second support structure 3 is set large enough to meet the requirement of forming the receiving area, and then meet the requirement of arranging the electrical component 302 on the side of the plate body 301 facing the heat sink 200. At this time, the electrical component 302 located on the side of the plate body 301 facing the heat sink 200 has improved heat dissipation effect due to the lack of the plate body 301, but the circuit board 300 is not fixed and can move between the first supporting structure 2 and the heat sink 200. In order to avoid abnormal noise or even damage caused by its movement, the present application sets the height of the accommodating area to be close to the electrical component 302 on the plate body 301 so that the electrical component 302 can contact the heat sink 200 to limit the movement of the circuit board 300, and at the same time further enhance the heat dissipation effect of the heat sink 200 on the electrical component 302 through contact conduction.

[0051] Furthermore, a heat-conducting structure is provided between the electrical component 302 located in the accommodating area and the heat sink 200. The above describes how to improve the heat dissipation effect of the heat sink 200 on the electrical component 302 through contact conduction, but the contact area between the electrical component 302 and the heat sink 200 is necessarily limited and cannot cover the heat sink 200. Therefore, in this embodiment, the heat-conducting structure is provided between the electrical component 302 and the heat sink 200, and the heat-conducting area between the electrical component 302 and the heat sink 200 is improved through the transition of the heat-conducting structure, so as to improve the heat dissipation effect on the electrical component 302. Specifically, the present application does not limit the specific setting of the thermal conductive structure. It can be a solid thermal conductive structure with a contoured setting, or it can be a liquid thermal conductive structure. It only needs to increase the thermal conductive area between the electrical component 302 and the heat sink 200. In this embodiment, the thermal conductive structure is configured as thermal conductive silicone coated between the electrical component 302 and the heat sink 200. The thermal conductive silicone technology is mature, low-cost, easy to set up and has good effects.

[0052] In addition, the above specifically describes the possible distribution methods of the electrical components 302. In this embodiment, the electrical components 302 are distributed on both sides of the board body 301 to increase the layout range of the electrical components 302 on the circuit board 300 and meet the more complex structural settings of the circuit board 300.

[0053] In addition, the first support structure 2 includes a screw connection column 211 located at the edge of the accommodating cavity 11, and the heat sink 200 is provided with a screw connection hole 201 corresponding to the screw connection column 211, and a screw connection member screwed to the screw connection column 211 is penetrated at the screw connection hole 201, so as to fix the heat sink 200 to the second support structure 3. The first support structure 2 includes the screw connection column 211 disposed at the edge of the accommodating cavity 11, and the electric control component 1000 includes the screw connection member penetrated through the heat sink 200 to connect to the screw connection column 211, which has been described in detail above, and will not be repeated here one by one, and the heat sink 200 is fixed to meet the limit fixation of the circuit board 300. Of course, in addition to this, the heat sink 200 can also be fixed to the second support structure 3 by other means, including bonding, setting a snap structure to clamp the second support structure 3 and the heat sink 200, etc., which can meet the need of fixing the heat sink 200, and is not specifically limited here.

[0054] The utility model also provides a vehicle refrigerator, which includes the electric control component 1000. The specific structure of the electric control component 1000 refers to the above embodiment. Since the vehicle refrigerator adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0055] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An electric control box, characterized in that: include: The box body is provided with a containing cavity with an opening at one end; A first supporting structure is disposed in the accommodating cavity and is used to support the circuit board; as well as, The second supporting structure is arranged 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.

2. The electric control box according to claim 1, characterized in that: The second supporting structure is arranged on the periphery of the first supporting structure.

3. The electric control box according to claim 2, characterized in that: The second supporting structure includes a sinking platform opened on the cavity wall of the accommodating cavity.

4. The electric control box according to claim 1, characterized in that: 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.

5. The electric control box according to claim 4, characterized in that: The limiting structure includes a first limiting rib.

6. The electric control box according to claim 1, characterized in that: The first supporting structure includes a supporting column disposed in the accommodating cavity.

7. The electric control box according to claim 6, characterized in that: The support column comprises a screw connection column located at the edge of the accommodating cavity, and the screw connection column is used to fix the heat dissipation plate to the second support structure through a screw connection piece.

8. The electric control box according to claim 1, characterized in that: The first supporting structure includes supporting ribs arranged on the wall of the accommodating cavity.

9. The electric control box according to claim 1, characterized in that: 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 circuit board toward the opening.

10. An electric control component, characterized in that: include: An electric control box, which is the electric control box as claimed in any one of claims 1 to 9; A heat sink, fixed to the second supporting structure; as well as, The circuit board is placed on the first supporting structure and is limited by the heat dissipation plate.

11. The electronic control assembly according to claim 10, characterized in that: The circuit board includes a board body and an electrical component fixed to the board body. The board body is placed on the first supporting structure, and the electrical component is at least arranged on one side of the board body.

12. The electronic control assembly according to claim 11, characterized in that: The plate body and the heat dissipation plate define a containing area, and the electrical component is at least arranged in the containing area.

13. The electronic control assembly according to claim 12, characterized in that: A heat-conducting structure is arranged between the electrical component located in the accommodating area and the heat dissipation plate.

14. The electronic control assembly according to claim 13, characterized in that: The heat-conducting structure includes heat-conducting silica gel coated between the electrical component and the heat dissipation plate.

15. The electronic control assembly according to claim 11, characterized in that: The electrical components are distributed on both sides of the board.

16. The electronic control assembly according to claim 10, 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.

17. A vehicle refrigerator, characterized in that: Comprising an electronic control component as described in any one of claims 10-16.

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