Anti-static heat dissipation ECU device provided with double-layer rear cover

Abstract

The utility model relates to the field of automobile parts, in particular to an anti-static heat dissipation ECU device provided with a double-layer rear cover, the upper end of a shell is provided with an opening, and a circuit board is arranged in the shell; an opening is formed in the shell, the upper-layer rear cover is arranged at the opening and used for sealing and covering the opening, the lower-layer rear cover is arranged between the shell and the upper-layer rear cover, a heat dissipation silica gel gluing area is arranged on the face, facing an inner cavity of the shell, of the lower-layer rear cover, and the heat dissipation silica gel gluing area abuts against components on the circuit board to be used for heat dissipation. A through hole is formed in the lower-layer rear cover and used for allowing an anti-static spring connected with the circuit board to penetrate through, and the anti-static spring abuts against the upper-layer rear cover. The beneficial effects of the utility model are that the utility model effectively solves the problem that not only electrostatic shielding but also heat dissipation of the heat dissipation silica gel are needed, enables a plurality of key components to work in a better environment, and greatly reduces the design difficulty and selection standards of the key components.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to an anti-static heat dissipation ECU device installed with a double-layer rear cover. Background Art

[0002] The back cover plays a crucial role in the IBCU. First, it provides waterproof and dustproof protection, effectively protecting the ECU housing and PCBA, ensuring that the device's internal components are protected from external environmental influences. Second, the back cover is rigidly connected to the electrostatic springs on the PCBA, generating static electricity that forms an electrostatic shield with the entire back cover, thereby protecting the electronic components on the PCBA from interference from external electric fields. Finally, the back cover provides a location for heat dissipation silicone rubber, which dissipates heat from critical components and ensures their proper function. Therefore, the back cover plays a vital role in maintaining the stability and reliability of the IBCU.

[0003] In IBCU back cover design, creating an electrostatic shield and dissipating heat often conflict. During operation, the entire back cover may be charged with static electricity. If it's too close to the PCBA, this static electricity can directly affect the proper functioning of key components and even risk damaging them through air. Furthermore, the PCBA contains numerous ping pins, which can penetrate the back cover if placed too close to the back cover. Therefore, the gap between the back cover and the PCBA must be greater than a safe distance. To effectively dissipate heat, a certain distance must be maintained between the heat-dissipating silicone and key components.

[0004] In automotive rear-hood design, electrostatic interference (ESD) can have a particularly severe impact on key components, which themselves require effective heat dissipation. While striving to prevent ESD, ensuring component heat dissipation becomes a daunting challenge. Currently, more designs prioritize protecting components from ESD, which in turn makes heat dissipation a more prominent issue. More effective heat dissipation structures can be implemented, such as designing ventilation holes or adding fans or heat pipes. However, on a PCB with numerous components, these completely alter the original design layout, further increasing the board size and resulting in significant costs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an anti-static heat dissipation ECU device installed with a double-layer rear cover, so as to solve the above-mentioned problems existing in the prior art.

[0006] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: An anti-static heat dissipation ECU device with a double-layer back cover is installed, comprising a shell, an upper back cover made of a metal material, and a lower back cover made of an insulating material, the upper end of the shell is provided with an opening, and the circuit board is arranged in the shell; the upper back cover is arranged at the opening for sealing the opening, the lower back cover is arranged between the shell and the upper back cover, and a heat dissipation silicone glue area is provided on the side of the lower back cover facing the inner cavity of the shell, the heat dissipation silicone glue area abuts against the components on the circuit board for heat dissipation, and a through hole is provided on the lower back cover for an anti-static spring connected to the circuit board to pass through, and the anti-static spring abuts against the upper back cover.

[0007] The beneficial effects of the present invention are: the present invention effectively solves the problem of both forming an electrostatic shield and dissipating heat with silicone, allowing multiple key components to work in a better environment, greatly reducing the design difficulty and selection criteria of key components; the present invention has a simple structure, and there will be no situation where the height difference of a single back cover boss is extremely large, which reduces the possibility of cracks in the back cover and the difficulty of processing, improves the product qualification rate of the back cover, and improves the difficulty of maintaining product quality; the upper back cover and the lower back cover in the present invention can be manufactured by a stamping process, and the difficulty and cost of mass production are low.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the periphery of the upper back cover is provided with an edge, the shape of the edge matches the shape of the opening, and the edge is sealed and fixedly connected to the periphery of the opening.

[0010] The beneficial effect of adopting the above further solution is that the arrangement along the edge can facilitate the connection between the upper back cover and the shell.

[0011] Furthermore, a sealing groove is provided on the end surface of the edge facing the shell, and a protrusion matching the sealing groove is provided on the periphery of the opening, and the protrusion is inserted into the sealing groove.

[0012] The beneficial effect of adopting the above further solution is that the provision of the sealing groove and the protruding edge can facilitate the sealing and fixing of the upper rear cover and the shell, thereby improving the stability of the fixing.

[0013] Furthermore, a peripheral side edge extending toward the shell is provided on the outer periphery of the edge, the peripheral side edge is provided on the outer side of the sealing groove, and the inner wall of the peripheral side edge abuts the outer wall of the protruding edge, and a plurality of card slots are evenly spaced on the peripheral side edge, a plurality of fixed ribs are provided on the periphery of the lower back cover, and the plurality of fixed ribs are inserted into the card slots one by one, and a plurality of protruding ribs are provided on the protruding edge, and the protruding ribs are inserted into the card slots one by one and press the fixed ribs against the bottom of the card slot.

[0014] The beneficial effects of adopting the above-mentioned further scheme are: through the cooperation of the protruding ribs and the card grooves, the fixed ribs are pressed and fixed, thereby realizing the limited fixation of the lower back cover, with a simple structure and easy installation; during the sealing process, the glue overflowing from the sealing groove flows between the peripheral side and the outer wall of the protruding edge, realizing the connection between the peripheral side and the outer wall of the shell, thereby improving the connection strength and improving the sealing between the upper back cover and the shell.

[0015] Furthermore, the protruding edge is provided with a limiting groove corresponding to the card groove one by one, the protruding rib is provided on the outer wall of the protruding edge, and the top of the protruding rib and the bottom of the limiting groove are located in the same plane, and the fixed rib is inserted in the limiting groove.

[0016] The beneficial effect of adopting the above further solution is that the setting of the limiting groove can further achieve the limitation between the shell and the upper rear cover through the fixing ribs, which is convenient for installation.

[0017] Furthermore, a support platform is provided on the inner wall along the edge, and a plurality of support ribs are evenly provided on the inner wall of the opening, and the support ribs press the periphery of the lower back cover against the support platform.

[0018] The beneficial effect of adopting the above further solution is that the lower rear cover is pressed against the support platform by the supporting ribs, thereby achieving position limiting and fixing of the lower rear cover, with a simple structure and easy installation.

[0019] Furthermore, the support platform is an annular support platform.

[0020] The beneficial effect of adopting the above further solution is that the support platform adopts an annular structure, which can press the periphery of the lower rear cover and ensure the stability of the fixation of the lower rear cover.

[0021] Furthermore, there are multiple support platforms, and the multiple support platforms are evenly spaced along the periphery of the edge, and the lower end surfaces of the multiple support platforms are located in the same plane.

[0022] The beneficial effect of adopting the above further solution is that the support platforms are multiple, with the lower end surfaces being in the same plane, which can press and fix the lower back cover while reducing material consumption.

[0023] Furthermore, a plurality of protrusions are evenly arranged on the protruding edge, and the plurality of protrusions abut against the inner wall of the sealing groove.

[0024] The beneficial effect of adopting the above further solution is that the setting of the protrusion can ensure that there is a certain gap between the top of the protrusion and the inner wall of the sealing groove to accommodate the sealant, thereby avoiding excessive overflow of the sealant in the sealing groove during press-fitting and dispensing, resulting in a loose connection and insufficient sealing.

[0025] Furthermore, a plurality of bosses are provided on a surface of the lower back cover facing the shell, and the heat dissipation silicone gluing area is provided on the bosses.

[0026] The beneficial effect of adopting the above further solution is: a number of bosses are set according to the number of key heat dissipation components, and the height of the bosses is determined by the height difference of the key components, which can effectively adapt to the height differences of different components and ensure the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the housing in the present utility model;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the upper back cover in the present invention;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the lower back cover in the present invention;

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 1. Shell; 2. Upper back cover; 3. Lower back cover; 4. Opening; 5. Edge; 6. Sealing groove; 7. Protruding edge; 8. Card slot; 9. Fixed rib; 10. Protruding rib; 11. Side edge; 12. Limiting groove; 13. Bump. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] Example 1

[0035] like Figure 1As shown, this embodiment includes a shell 1, an upper back cover 2 made of metal material and a lower back cover 3 made of insulating material, the upper end of the shell 1 is provided with an opening 4, and the circuit board is arranged in the shell 1; the upper back cover 2 is arranged at the opening 4 for sealing the opening 4, the lower back cover 3 is arranged between the shell 1 and the upper back cover 2, and the lower back cover 3 is provided with a heat dissipation silicone glue area on the side facing the inner cavity of the shell 1, the heat dissipation silicone glue area abuts against the components on the circuit board for heat dissipation, and the lower back cover 3 is provided with a through hole for an anti-static spring (not drawn in the drawing) connected to the circuit board to pass through, and the anti-static spring abuts against the upper back cover 2.

[0036] In this embodiment, the back cover includes an upper back cover 2 made of metal material and a lower back cover 3 made of insulating material. The two back covers perform different functions. The upper back cover 2 is preferably made of aluminum material and is in direct contact with the electrostatic spring to achieve electromagnetic shielding to resist external interference. The lower back cover is made of insulating material and is specifically used to provide a heat dissipation silicone gluing area to dissipate heat from components. The upper back cover 2 is fixed with the shell 1, and the lower back cover 3 is firmly fixed by the cooperation and clamping of the upper back cover 2 and the shell 1, which effectively solves the contradiction between heat dissipation and anti-static interference of the traditional back cover and achieves better performance.

[0037] In this embodiment, the periphery of the upper back cover 2 is provided with an edge 5, the shape of the edge 5 matches the shape of the opening 4, and the edge 5 is sealed and fixedly connected to the periphery of the opening 4. The setting of the edge 5 can facilitate the connection between the upper back cover 2 and the shell 1.

[0038] In this embodiment, a sealing groove 6 is provided on the end face of the edge 5 facing the shell 1, and a protruding edge 7 matching the sealing groove 6 is provided around the opening 4. The protruding edge 7 is inserted into the sealing groove 6. The setting of the sealing groove 6 and the protruding edge 7 can facilitate the sealing and fixation of the upper back cover 2 and the shell 1, and improve the stability of the fixation.

[0039] In this embodiment, a plurality of protrusions 13 are evenly provided on the protruding edge 7, and the plurality of protrusions 13 abut against the inner wall of the sealing groove 6. The arrangement of the protrusions 13 can ensure that there is a certain gap between the top of the protruding edge 7 and the inner wall of the sealing groove 6 to accommodate the sealant, thereby avoiding excessive overflow of the sealant in the sealing groove 6 during press-fitting and dispensing, resulting in a loose connection and insufficient sealing.

[0040] In this embodiment, the lower back cover 3 has a plurality of bosses on the side facing the housing 1. These bosses are provided with the heat dissipation silicone adhesive area. The number of bosses is determined by the number of key heat dissipation components. The height of the bosses is determined by the height difference of the key components, effectively accommodating the height differences of different components and ensuring heat dissipation. If there are multiple key components requiring heat dissipation and the heights vary, a stamping process can be used to create multiple bosses, with the height of the bosses determined by the height difference of the key components.

[0041] In this embodiment, the side of the upper back cover 2 facing the housing 1 can be provided with reinforcing ribs to enhance its structural strength and accommodate a series of functions such as the label area.

[0042] Example 2

[0043] like Figure 3 、 Figure 4 As shown, this embodiment makes the following improvements on the basis of the embodiment 1: a peripheral side edge 11 extending toward the shell 1 is provided on the outer periphery of the edge 5, the peripheral side edge 11 is provided on the outside of the sealing groove 6, and the inner wall of the peripheral side edge 11 abuts the outer wall of the protruding edge 7, a plurality of card slots 8 are evenly spaced on the peripheral side edge 11, a plurality of fixed ribs 9 are provided on the periphery of the lower back cover 3, and the plurality of fixed ribs 9 are inserted into the card slots 8 in a one-to-one correspondence, a plurality of protruding ribs 10 are provided on the protruding edge 7, and the protruding ribs 10 are provided on the protruding edge 7. The protruding ribs 10 are inserted into the card slots 8 one by one and the fixed ribs 9 are pressed against the bottom of the card slots 8. The cooperation between the protruding ribs 10 and the card slots 8 realizes the pressing and fixing of the fixed ribs 9, thereby realizing the limited fixation of the lower back cover 3. The structure is simple and the installation is convenient. During the sealing process, the glue overflowing from the sealing groove 6 flows between the inner wall of the peripheral side 11 and the outer wall of the protruding edge 7, realizing the connection between the peripheral side 11 and the outer wall of the shell 1, thereby improving the connection strength and the sealing between the upper back cover 2 and the shell 1.

[0044] The arrangement of the protruding ribs 10, the fixed ribs 9 and the card slots 8 can achieve positioning between the upper back cover 2, the lower back cover 3 and the housing 1, facilitate assembly, and prevent loosening or displacement during use.

[0045] like Figure 2 As shown, in this embodiment, a limiting groove 12 corresponding to the card slot 8 is provided on the protruding edge 7, and the protruding rib 10 is provided on the outer wall of the protruding edge 7, and the top of the protruding rib 10 and the bottom of the limiting groove 12 are located in the same plane, and the fixed rib 9 is inserted into the limiting groove 12. The setting of the limiting groove 12 can further realize the limitation between the shell 1 and the upper back cover 2 through the fixed rib 9, which is convenient for installation.

[0046] In this embodiment, by modifying the depth of the card slot 8 and the height of the protruding rib 10, the height position of the lower back cover 3 can be flexibly controlled. The gap between the lower back cover 3 and the circuit board is determined by the height of the key components that need heat dissipation, and the gap can be ensured by modifying the height of the corresponding fixed rib 9.

[0047] During the dispensing process of the present invention, it is necessary to stay at the upper back cover 2 for some time. In the subsequent press-fitting, the sealant in the sealing groove 6 slides down along the limit groove 12 to achieve sealing at the limit groove 12. In addition, a special dispensing process can also be performed between the inner wall of the peripheral side 11 and the outer wall of the protruding edge 7.

[0048] Example 3

[0049] This embodiment makes the following improvements on the basis of the first embodiment: a support platform is provided on the inner wall of the edge 5, and a plurality of support ribs are evenly provided on the inner wall of the opening 4. The support ribs press the periphery of the lower back cover 3 against the support platform, and the lower back cover 3 is pressed against the support platform by the support ribs, thereby achieving the limiting fixation of the lower back cover 3, with a simple structure and easy installation.

[0050] In this embodiment, the support platform is an annular support platform, or there are multiple support platforms, and the multiple support platforms are evenly spaced along the periphery of the edge 5, and the lower end surfaces of the multiple support platforms are located in the same plane. The support platforms press against the periphery of the lower back cover 3 to ensure the stability of the fixation of the lower back cover 3.

[0051] In order to facilitate the positioning of the lower rear cover 3, positioning blocks can be provided around the bottom surface of the lower rear cover 3, and corresponding positioning grooves can be provided on the support platform to achieve the positioning and installation of the lower rear cover 3 and the support platform.

[0052] The present invention effectively solves the problem of both forming an electrostatic shield and dissipating heat through silicone gel, allowing multiple key components to work in a better environment, greatly reducing the design difficulty and selection criteria of key components; the present invention has a simple structure, and there will be no situation where the height difference of a single rear cover boss is extremely large, which reduces the possibility of cracks in the rear cover and the difficulty of processing, improves the product qualification rate of the rear cover, and improves the difficulty of maintaining product quality; the upper rear cover 2 and the lower rear cover 3 in the present invention can both be manufactured by a stamping process, and the difficulty and cost of mass production are low.

[0053] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In the description of the present invention, “a plurality of” means at least two, such as two, three, etc., unless otherwise clearly defined.

[0055] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-static heat dissipation ECU device with a double-layer back cover, characterized in that: The invention comprises a shell (1), an upper back cover (2) made of a metal material, and a lower back cover (3) made of an insulating material, wherein an opening (4) is provided at the upper end of the shell (1), and a circuit board is arranged in the shell (1); the upper back cover (2) is arranged at the opening (4) for sealing the opening (4), and the lower back cover (3) is arranged between the shell (1) and the upper back cover (2); a heat dissipation silicone glue area is provided on the side of the lower back cover (3) facing the inner cavity of the shell (1), and the heat dissipation silicone glue area abuts against the components on the circuit board for heat dissipation; a through hole is provided on the lower back cover (3) for an anti-static spring connected to the circuit board to pass through, and the anti-static spring abuts against the upper back cover (2).

2. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 1, characterized in that: The periphery of the upper rear cover (2) is provided with an edge (5), the shape of the edge (5) matches the shape of the opening (4), and the edge (5) is sealed and fixedly connected to the periphery of the opening (4).

3. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 2, characterized in that: A sealing groove (6) is provided on the end surface of the edge (5) facing the shell (1), and a protruding edge (7) matching the sealing groove (6) is provided on the periphery of the opening (4), and the protruding edge (7) is inserted into the sealing groove (6).

4. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 3, characterized in that: The outer periphery of the edge (5) is provided with a peripheral side edge (11) extending toward the shell (1), the peripheral side edge (11) is provided on the outer side of the sealing groove (6), and the inner wall of the peripheral side edge (11) abuts the outer wall of the protruding edge (7), and a plurality of card slots (8) are evenly spaced on the peripheral side edge (11). The periphery of the lower back cover (3) is provided with a plurality of fixed ribs (9), and the plurality of fixed ribs (9) are inserted into the card slots (8) one by one. The protruding edge (7) is provided with a plurality of protruding ribs (10), and the protruding ribs (10) are inserted into the card slots (8) one by one and press the fixed ribs (9) against the bottom of the card slot (8).

5. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 4, characterized in that: The protruding edge (7) is provided with a limiting groove (12) corresponding to the clamping groove (8) one by one, the protruding rib (10) is provided on the outer wall of the protruding edge (7), and the top of the protruding rib (10) and the bottom of the limiting groove (12) are located in the same plane, and the fixed rib (9) is inserted into the limiting groove (12).

6. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 2, characterized in that: A support platform is provided on the inner wall of the edge (5), and a plurality of support ridges are evenly provided on the inner wall of the opening (4). The support ridges press the periphery of the lower rear cover (3) against the support platform.

7. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 6, characterized in that: The support platform is an annular support platform.

8. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 6, characterized in that: There are multiple support platforms, and the multiple support platforms are evenly spaced along the periphery of the edge (5), and the lower end surfaces of the multiple support platforms are located in the same plane.

9. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 3, characterized in that: A plurality of convex points (13) are evenly arranged on the protruding edge (7), and the plurality of convex points (13) abut against the inner wall of the sealing groove (6).

10. An anti-static heat dissipation ECU device with a double-layer rear cover according to any one of claims 1 to 9, characterized in that: A plurality of bosses are provided on the surface of the lower back cover (3) facing the housing (1), and the heat dissipation silicone glue application area is provided on the bosses.

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