Back-mounted reinforced heat dissipation structure for solid state disk of occultation exploration satellite

Abstract

The utility model provides an occultation exploration satellite solid state disk back-mounted reinforced heat dissipation structure, which comprises a casing, an installation groove is fixedly arranged in the casing, and an installation base is arranged in the installation groove; the circuit board is fixedly connected to the inner side of the machine shell, and the mounting base is fixedly connected with the circuit board; the solid state disk is mounted on the inner side of the mounting base; a first heat conduction pad is arranged between the solid state disk and the mounting groove, and the solid state disk conducts heat to the case through the first heat conduction pad and the mounting groove; a second heat conduction pad is arranged on the end face, away from the solid state disk, of the mounting groove, and the solid state disk conducts heat to the machine shell through the first heat conduction pad, the mounting groove and the second heat conduction pad. The industrial SSD has the advantages that the structure of an existing industrial SSD is reinforced, heat of the SSD is directly conducted to the structural shell through the heat conduction pad, the design is simplified, heat resistance is reduced, stable fixing is carried out in combination with the installation base and the machine shell structure, and the anti-vibration performance is improved.

Description

Technical Field

[0001] The utility model belongs to the field of heat dissipation devices, in particular to a back-mounted reinforced heat dissipation structure of a solid-state hard disk of an occultation detection satellite. Background Art

[0002] Occultation detection satellites generate a large amount of data information during operation, which requires large-capacity storage devices on board. SSDs based on the NVMe protocol have become the preferred high-speed, large-capacity storage devices on commercial satellites. They generate a lot of heat during operation. If the temperature threshold is exceeded, it will affect the normal operation and service life of the hard disk. Therefore, the heat dissipation problem of the SSD needs to be solved. In addition, during the launch of the satellite, severe vibrations will occur, and the SSD needs to be reinforced when installed on the device.

[0003] The existing SSD fixing method based on the NVMe protocol uses a slot and a screw, and there is only half of the screw mounting surface. The bottom of the SSD is suspended in the air, and the structural vibration reliability is not high. In addition, the heat dissipation design on the ground is mostly a combination of conduction and air cooling. There is no air cooling method in the vacuum environment of space, so the heat dissipation design on the ground is not very applicable. As for indirectly conducting the SSD heat to the casing by adding a heat conductive block, this solution will increase components and increase the interface thermal resistance. Utility Model Content

[0004] In view of this, the utility model aims to propose a back-mounted reinforced heat dissipation structure of a solid-state hard disk of an occultation detection satellite, in order to solve at least one of the above-mentioned technical problems.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A back-mounted reinforced heat dissipation structure for a solid-state hard disk of an occultation detection satellite, comprising:

[0007] A housing, wherein a mounting groove is fixedly provided in the housing, and a mounting base is provided in the mounting groove

[0008] A circuit board, wherein the circuit board is fixedly connected to the inner side of the housing, and the mounting base is fixedly connected to the circuit board;

[0009] A solid state hard disk, wherein the solid state hard disk is installed inside the installation base;

[0010] A first thermal pad is provided between the solid state drive and the mounting slot, and the solid state drive conducts heat to the housing through the first thermal pad and the mounting slot;

[0011] A second thermal pad is arranged on the end surface of the mounting slot away from the solid state hard disk, and the solid state hard disk conducts heat to the casing through the first thermal pad, the mounting slot and the second thermal pad.

[0012] Furthermore, a plurality of connecting blocks are fixedly provided on the inner wall of the casing, each of the plurality of connecting blocks is provided with a connecting hole 1, a connecting hole 2 corresponding to the connecting hole 1 is provided on the circuit board, a connecting bolt is provided in the connecting hole 2, and the connecting bolt passes through the connecting hole 2 and is threadedly connected to the connecting hole 1.

[0013] Furthermore, the edge of the mounting base is provided with a plurality of mounting holes 1, the circuit board is provided with a plurality of mounting holes 2 corresponding to the mounting holes 1, and the bottom surface of the mounting groove is provided with a plurality of mounting holes 3 corresponding to the mounting holes 1;

[0014] A mounting bolt is arranged in the mounting hole three, and the mounting bolt passes through the mounting hole three, the mounting hole one, and the mounting hole two in sequence, and is threadedly connected with a mounting nut arranged on the end surface of the circuit board away from the mounting base.

[0015] Furthermore, a plurality of mounting posts are fixedly connected to the inner side wall of the housing, and one end of the mounting post away from the housing is fixedly connected to the outer side wall of the mounting groove;

[0016] A plurality of connection pins are fixedly arranged on the outer side wall of the casing, and the casing is fixedly connected to the inside of the satellite through the connection pins.

[0017] Furthermore, the mounting base is provided with a plurality of hard disk slots matching the solid state hard disks, and the solid state hard disks are mounted inside the hard disk slots.

[0018] Furthermore, a fixing block is fixedly provided on one side of the mounting base, and a fixing hole corresponding to the solid state hard disk is opened on the fixing block;

[0019] An arc-shaped boss corresponding to the solid-state hard disk is arranged at one end of the fixed block adjacent to the solid-state hard disk, and the height of the arc-shaped boss is the same as that of the solid-state hard disk;

[0020] A positioning boss is arranged at one end of the fixing block away from the solid state hard disk, a positioning hole corresponding to the positioning boss is opened on the circuit board, and the positioning boss is located inside the positioning hole.

[0021] Furthermore, an upper cover and a lower cover are respectively installed at two ends of the housing; and the second thermal conductive pad is arranged between the upper cover and the installation groove.

[0022] Furthermore, the mounting base is fixedly connected to the end surface of the circuit board on which the electronic components are welded.

[0023] Compared with the prior art, the back-mounted reinforced heat dissipation structure of the solid-state hard disk of the occultation detection satellite described in the utility model has the following beneficial effects:

[0024] The utility model can reinforce the structure of existing industrial SSDs. The back-mounted structure can allow the heat of the SSD to be directly transferred to the structural shell through the thermal pad, and finally to the satellite body, which simplifies the design and reduces thermal resistance. It is combined with the mounting base and the casing structure for stable fixation, while improving the vibration resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the structure of the back-mounted reinforced heat dissipation structure of the solid-state hard disk according to the embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the overall structure of the casing according to an embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the front structure of the mounting base according to an embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the back structure of the mounting base according to an embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the installation slot structure described in an embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 1. Casing; 101. Mounting slot; 102. Connecting block; 103. Mounting column; 2. Mounting base; 201. Hard disk slot; 202. Fixing block; 203. Arc boss; 204. Positioning boss; 3. Circuit board; 4. Solid state drive; 5. First thermal pad; 6. Second thermal pad; 7. Connecting pin; 8. Upper cover; 9. Lower cover. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] A 4-back mounted reinforced heat dissipation structure for a solid state hard disk of an occultation detection satellite, comprising:

[0038] A housing 1, wherein a mounting groove 101 is fixedly disposed in the housing 1, and a mounting base 2 is disposed in the mounting groove 101;

[0039] A circuit board 3, wherein the circuit board 3 is fixedly connected to the inner side of the housing 1, and the mounting base 2 is fixedly connected to the circuit board 3;

[0040] A solid state hard disk 4, wherein the solid state hard disk 4 is installed inside the installation base 2;

[0041] A first thermal pad 5 is disposed between the solid state drive 4 and the mounting slot 101 , and the solid state drive 4 conducts heat to the housing 1 through the first thermal pad 5 and the mounting slot 101 ;

[0042] A second thermal pad 6 is disposed on the end surface of the mounting slot 101 away from the solid state drive 4 , and the solid state drive 4 conducts heat to the housing 1 through the first thermal pad 5 , the mounting slot 101 , and the second thermal pad 6 .

[0043] A plurality of connection blocks 102 are fixedly provided on the inner wall of the housing 1, each of the plurality of connection blocks 102 is provided with a connection hole 1, a connection hole 2 corresponding to the connection hole 1 is provided on the circuit board 3, a connection bolt is provided in the connection hole 2, and the connection bolt passes through the connection hole 2 and is threadedly connected to the connection hole 1.

[0044] The edge of the mounting base 2 is provided with a plurality of mounting holes 1, the circuit board 3 is provided with a plurality of mounting holes 2 corresponding to the mounting holes 1, and the bottom surface of the mounting slot 101 is provided with a plurality of mounting holes 3 corresponding to the mounting holes 1;

[0045] A mounting bolt is arranged in the mounting hole three, and the mounting bolt passes through the mounting hole three, the mounting hole one, and the mounting hole two in sequence, and is threadedly connected with a mounting nut arranged on the end surface of the circuit board 3 away from the mounting base 2.

[0046] A plurality of mounting posts 103 are fixedly connected to the inner side wall of the housing 1, and one end of the mounting post 103 away from the housing 1 is fixedly connected to the outer side wall of the mounting slot 101;

[0047] A plurality of connection pins 7 are fixedly disposed on the outer wall of the casing 1 , and the casing 1 is fixedly connected to the inside of the satellite via the connection pins 7 .

[0048] The mounting base 2 is provided with a plurality of hard disk slots 201 matching the solid state hard disks 4 , and the solid state hard disks 4 are mounted inside the hard disk slots 201 .

[0049] A fixing block 202 is fixedly disposed on one side of the mounting base 2, and a fixing hole corresponding to the solid state drive 4 is opened on the fixing block 202;

[0050] An arc-shaped boss 203 corresponding to the solid state drive 4 is disposed at one end of the fixing block 202 adjacent to the solid state drive 4, and the height of the arc-shaped boss 203 is the same as that of the solid state drive 4;

[0051] A positioning boss 204 is disposed at one end of the fixing block 202 away from the solid state hard disk 4 , a positioning hole corresponding to the positioning boss 204 is opened on the circuit board 3 , and the positioning boss 204 is located inside the positioning hole.

[0052] An upper cover 8 and a lower cover 9 are respectively installed at two ends of the housing 1 ; the second thermal pad 6 is arranged between the upper cover 8 and the installation groove 101 .

[0053] The mounting base 2 is fixedly connected to the end surface of the circuit board 3 where the electronic components are welded.

[0054] The specific installation process is as follows:

[0055] The mounting base 2 is pin-hole positioned through the positioning boss 204 and the positioning hole on the circuit board 3 (PCB);

[0056] Place two solid state drives 4 (SSD) into the hard drive slot 201 and install each of them with a screw and a gasket. The screws pass through the SSD, the fixing holes, the positioning holes in sequence, and are fastened with the holes and nuts on the back of the PCB;

[0057] Adhesives such as silicone rubber can be applied between the SSD and the mounting base 2 to reduce the vibration deformation of the SSD and improve the vibration resistance of the structure;

[0058] The height of the arc-shaped boss 203 is the same as that of the solid-state drive 4. When the screws are tightened, the half mounting surface formed by the original SSD can be optimized to a complete mounting surface, which can improve the mounting support stability of the SSD screw mounting surface.

[0059] A thermal pad is placed on the top of the SSD, and the PCB is installed to the housing 1 in the following manner: the front side of the PCB (SSD installation surface) fits into the installation groove 101, and the back side is connected to the connection block 102 on the housing 1 through the connection bolts passing through the PCB, i.e., a back-mounted connection.

[0060] The upper cover 8, the lower cover 9 and the housing 1 are made of aluminum alloy, and the mounting base 2 is made of insulating material, such as nylon, polyimide, etc.;

[0061] The SSD has two heat conduction paths, the main one is to conduct the heat to the housing 1 through the thermal pad, and the other is to conduct the heat to the upper cover 8 through the thermal pad between the bottom surface of the mounting slot 101 and the upper cover 8 on the basis of the first heat conduction path;

[0062] In the above two heat dissipation pathways, part of the heat will be conducted to the bottom satellite mounting surface through the structural body, and part of the heat will be radiated outward through the casing 1. Based on the above design, the normal operation of the SSD on the satellite can be achieved by combining the thermal control design of the entire satellite and the working mode setting.

[0063] The thermal pad should increase the compression rate as much as possible while meeting the performance requirements, thereby increasing the pre-tightening force of the mounting slot 101 on the SSD and reducing the vibration deformation of the SSD.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A back-mounted reinforced heat dissipation structure for a satellite solid-state hard disk (4) for occultation detection, characterized in that: include: A housing (1), wherein a mounting groove (101) is fixedly provided in the housing (1), and a mounting base (2) is provided in the mounting groove (101); A circuit board (3), the circuit board (3) being fixedly connected to the inner side of the housing (1), and the mounting base (2) being fixedly connected to the circuit board (3); A solid state hard disk (4), wherein the solid state hard disk (4) is installed inside the installation base (2); A first thermal pad (5) is provided between the solid state hard disk (4) and the mounting slot (101), and the solid state hard disk (4) conducts heat to the housing (1) through the first thermal pad (5) and the mounting slot (101); A second thermal pad (6) is provided on the end surface of the mounting slot (101) away from the solid state hard disk (4), and the solid state hard disk (4) conducts heat to the housing (1) through the first thermal pad (5), the mounting slot (101), and the second thermal pad (6).

2. The back-mounted reinforced heat dissipation structure of a solid-state hard disk (4) for an occultation detection satellite according to claim 1, characterized in that: A plurality of connection blocks (102) are fixedly arranged on the inner side wall of the housing (1), each of the plurality of connection blocks (102) being provided with a connection hole one, a connection hole two corresponding to the connection hole one being provided on the circuit board (3), a connection bolt being arranged in the connection hole two, the connection bolt penetrating the connection hole two and being threadedly connected to the connection hole one.

3. The back-mounted reinforced heat dissipation structure of a solid-state hard disk (4) for an occultation detection satellite according to claim 1, characterized in that: The edge portion of the mounting base (2) is provided with a plurality of mounting holes 1, the circuit board (3) is provided with a plurality of mounting holes 2 corresponding to the mounting holes 1, and the bottom surface of the mounting slot (101) is provided with a plurality of mounting holes 3 corresponding to the mounting holes 1; A mounting bolt is arranged in the mounting hole three, and the mounting bolt passes through the mounting hole three, the mounting hole one, and the mounting hole two in sequence, and is threadedly connected with a mounting nut arranged on the end surface of the circuit board (3) away from the mounting base (2).

4. The back-mounted reinforced heat dissipation structure of a solid-state hard disk (4) for an occultation detection satellite according to claim 1, characterized in that: A plurality of mounting posts (103) are fixedly connected to the inner side wall of the housing (1), and one end of the mounting post (103) away from the housing (1) is fixedly connected to the outer side wall of the mounting groove (101); A plurality of connection pins (7) are fixedly arranged on the outer side wall of the casing (1), and the casing (1) is fixedly connected to the inside of the satellite via the connection pins (7).

5. The back-mounted reinforced heat dissipation structure of a solid-state hard disk (4) for an occultation detection satellite according to claim 1, characterized in that: The mounting base (2) is provided with a plurality of hard disk slots (201) matching the solid state hard disks (4), and the solid state hard disks (4) are mounted inside the hard disk slots (201).

6. The back-mounted reinforced heat dissipation structure of a solid-state hard disk (4) for an occultation detection satellite according to claim 5, characterized in that: A fixing block (202) is fixedly provided on one side of the mounting base (2), and a fixing hole corresponding to the solid state hard disk (4) is opened on the fixing block (202); An arc-shaped boss (203) corresponding to the solid-state hard disk (4) is provided at one end of the fixed block (202) adjacent to the solid-state hard disk (4), and the height of the arc-shaped boss (203) is the same as the height of the solid-state hard disk (4); A positioning boss (204) is provided at one end of the fixing block (202) away from the solid state hard disk (4), a positioning hole corresponding to the positioning boss (204) is opened on the circuit board (3), and the positioning boss (204) is located inside the positioning hole.

7. The back-mounted reinforced heat dissipation structure of a solid-state hard disk (4) for an occultation detection satellite according to claim 1, characterized in that: An upper cover (8) and a lower cover (9) are respectively installed at two ends of the housing (1); the second thermal conductive pad (6) is arranged between the upper cover (8) and the installation groove (101).

8. The back-mounted reinforced heat dissipation structure of a solid-state hard disk (4) for an occultation detection satellite according to claim 1, characterized in that: The mounting base (2) is fixedly connected to the end surface of the circuit board (3) on which the electronic components are welded.

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