Heat dissipation device

Abstract

The utility model relates to the technical field of radiators, in particular to a radiating device. The heat dissipation device comprises a bottom plate, a first heat dissipation assembly and a plurality of heat pipe assemblies. The heat pipe assemblies are arranged at intervals in the first direction, each heat pipe assembly comprises a plurality of heat pipes, each heat pipe is of a U-like structure, and each heat pipe comprises a heat absorption part abutting against the end face, away from the heating piece, of the bottom plate; the first heat dissipation assembly comprises a plurality of first heat dissipation pieces arranged between every two adjacent heat pipe assemblies, the first heat dissipation pieces abut against the bottom plate and comprise at least one pressing block arranged on one side in the first direction, the pressing blocks can limit the heat absorption parts between the pressing blocks and the bottom plate, and the structural stability is improved; heat conduction between the bottom plate and the heat pipe and heat conduction between the heat pipe and the first heat dissipation piece are guaranteed, then the heat dissipation power of the heat dissipation device is improved, the pressing block is simple in structure, the pressing block belongs to the structure of the first heat dissipation piece, independent assembling and fixing are not needed, operation is convenient, and the assembling and disassembling efficiency of the heat dissipation device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiators, in particular to a heat dissipation device. Background Art

[0002] At present, commonly used heat dissipation devices include a base plate, a heat pipe and a heat sink. Among them, a part of the heat pipe is in contact with the base plate, and a part is inserted into the heat sink. In order to fix the heat pipe, the heat pipe is usually arranged in a U-shaped structure, and the bottom of the U-shaped heat pipe is a heat absorbing part, and the heat absorbing part is in contact with the base plate. It can be understood that there are generally multiple heat pipes, and multiple heat absorbing parts of multiple heat pipes are arranged in parallel. The heat dissipation device also includes a fixed plate, which is perpendicular to the heat absorbing part and parallel to the base plate. The fixed plate and the base plate are connected by a fixing member, so that the fixed plate can fix the heat absorbing part between itself and the base plate, and the heat sink is arranged on the side of the fixed plate away from the heat absorbing part.

[0003] Although this structure can fix the heat pipe, the fixing plate prevents part of the heat pipe from contacting the heat sink, thereby reducing the heat dissipation and heat conduction effects and affecting the heat dissipation power of the heat dissipation device. In addition, the fixing plate needs to be assembled and disassembled separately, which is inconvenient and time-consuming to operate.

[0004] In order to solve the above problems, it is urgent to provide a heat dissipation device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a heat dissipation device, which makes the contact between the bottom plate and the heat pipe and the heat pipe and the first heat dissipation element more tightly, improves the structural stability of the heat dissipation device, and is conducive to ensuring the heat conduction between the bottom plate and the heat pipe and the heat pipe and the first heat dissipation element, thereby improving the heat dissipation power of the heat dissipation device. At the same time, the pressing block has a simple structure, and the pressing block belongs to the structure of the first heat dissipation element, and does not need to be assembled and fixed separately, which is easy to operate and is conducive to improving the assembly and disassembly efficiency of the heat dissipation device.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A heat dissipation device, comprising:

[0008] A bottom plate configured to fix the heating element;

[0009] A plurality of groups of heat pipe assemblies, each group of heat pipe assemblies is arranged at intervals along a first direction, and the heat pipe assemblies include a plurality of heat pipes, each of the heat pipes is in a U-shaped structure, and the heat pipes include a heat absorbing portion abutting against an end surface of the bottom plate away from the heating element;

[0010] A first heat dissipation assembly, the first heat dissipation assembly includes a plurality of first heat dissipation members arranged between two adjacent groups of the heat pipe assemblies, the first heat dissipation members abut against the base plate, and along the first direction, the first heat dissipation member includes a pressing block arranged on at least one side, and the pressing block is configured to limit the heat absorption part between the pressing block and the base plate.

[0011] As an optional solution, the first heat dissipation element further includes:

[0012] The heat dissipation part includes a fixed plate and a first fin, the fixed plate is connected to the base plate, the first fin is perpendicular to the fixed plate and extends in a direction away from the base plate, there are multiple first fins, and the multiple first fins are parallel and spaced along the first direction, and the pressing block is arranged on the first fin outside the heat dissipation part.

[0013] As an optional solution, when the pressing blocks are provided on both sides of the heat dissipation portion along the first direction, the pressing blocks limit at least one of the heat absorption portions.

[0014] As an optional solution, the multiple heat absorbing parts of the multiple heat pipes are arranged in parallel and contact along the first direction, the cross-sectional shape of the heat absorbing part is square, and the size of the heat absorbing part along the first direction is larger than the size of the heat absorbing part along the second direction.

[0015] As an optional solution, the heat pipe further includes:

[0016] Two bending parts, the two bending parts are respectively connected to two ends of the heat absorbing part; and

[0017] Two heat-conducting parts, the two heat-conducting parts are respectively connected to one end of the two bending parts away from the heat absorbing part, the heat dissipation device also includes a second heat dissipation component arranged between the heat pipe assemblies, and the multiple heat-conducting parts of each group of heat pipe assemblies can be abutted against the second heat dissipation component on both sides along the first direction.

[0018] As an optional solution, the heat conducting portion extends along the second direction, and a dimension of the heat conducting portion along the first direction is smaller than a dimension of the heat absorbing portion along the third direction.

[0019] As an optional solution, the base plate includes:

[0020] A mounting portion, configured to be provided with a heat generating element, wherein the mounting portion is provided with a mounting groove; and

[0021] A plurality of temperature-averaging heat pipes are arranged in the installation groove, the plurality of temperature-averaging heat pipes are arranged in parallel and in contact with each other, and the cross-sectional shape of the temperature-averaging heat pipes is square.

[0022] As an optional solution, the heat dissipation device further includes:

[0023] The second heat dissipation assembly comprises a plurality of second heat dissipation elements arranged between two adjacent groups of the heat pipe assemblies, and the second heat dissipation elements are arranged on a side of the first heat dissipation element away from the bottom plate.

[0024] As an optional solution, the second heat dissipation element includes:

[0025] Two groups of heat dissipation units are arranged opposite to each other, each of the heat dissipation units includes a heat dissipation plate, a plurality of second fins and a plurality of support plates, the plurality of second fins are arranged on the heat dissipation plate in parallel and at intervals along a second direction, the support plate is parallel to the second fins, and the plurality of support plates are arranged on the heat dissipation plate at intervals, and the support plates of the two groups of heat dissipation units are fixedly connected in a one-to-one correspondence.

[0026] As an optional solution, the heat dissipation unit is formed by extrusion.

[0027] The beneficial effects of the utility model are:

[0028] The utility model provides a heat dissipation device, which includes a bottom plate, a first heat dissipation assembly and a plurality of heat pipe assemblies. The bottom plate is used to fix the heating element, each group of heat pipe assemblies is arranged at intervals along the first direction, and the heat pipe assembly includes a plurality of heat pipes, each heat pipe is in a U-shaped structure, and the heat pipe includes a heat absorbing part that abuts against the end face of the bottom plate away from the heating element; the first heat dissipation assembly includes a plurality of first heat dissipation elements arranged between two adjacent groups of heat pipe assemblies, the first heat dissipation elements abut against the bottom plate, and along the first direction, the first heat dissipation elements include a pressing block arranged at least on one side, and the pressing block can limit the heat absorbing part between the pressing block and the bottom plate. The pressing block can fix the heat absorbing part, so that the bottom plate and the heat pipe and the heat pipe and the first heat dissipation element are more tightly contacted, the structural stability of the heat dissipation device is improved, and it is conducive to ensuring the heat conduction between the bottom plate and the heat pipe and the heat pipe and the first heat dissipation element, thereby improving the heat dissipation power of the heat dissipation device. At the same time, the pressing block has a simple structure, and the pressing block belongs to the structure of the first heat dissipation element, and does not need to be assembled and fixed separately, which is convenient for operation and is conducive to improving the assembly and disassembly efficiency of the heat dissipation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0030] Figure 1This is a schematic diagram of the structure of the heat dissipation device provided by the embodiment of the utility model. Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the structure of the heat dissipation device provided by the embodiment of the utility model. Figure 2 ;

[0032] Figure 3 It is a structural schematic diagram of a first heat sink provided by an embodiment of the utility model;

[0033] Figure 4 It is a structural schematic diagram of the second heat dissipation element provided in an embodiment of the utility model.

[0034] The following are marked in the figure:

[0035] 100-base plate; 110-installation portion; 120-heat pipe;

[0036] 200-heat pipe assembly; 210-heat pipe; 211-heat absorbing part; 212-bending part; 213-heat conducting part;

[0037] 300-first heat dissipation assembly; 310-first heat dissipation element; 311-pressing block; 312-heat dissipation part; 3121-fixing plate; 3122-first fin;

[0038] 400 - second heat dissipation assembly; 410 - second heat dissipation element; 411 - heat dissipation unit; 4111 - heat dissipation plate; 4112 - second fin; 4113 - support plate. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only partial structures related to the present invention are shown in the accompanying drawings, rather than the entire structure.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the connection of the internal structures of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] like Figure 1 and Figure 2 As shown, this embodiment provides a heat dissipation device, which includes a base plate 100, a first heat dissipation assembly 300 and a plurality of heat pipe assemblies 200. The base plate 100 is used to fix the heating element, each group of heat pipe assemblies 200 is arranged at intervals along the X direction (first direction), and the heat pipe assembly 200 includes a plurality of heat pipes 210, each heat pipe 210 is in a U-shaped structure, and the heat pipe 210 includes a heat absorbing portion 211 abutting against the end surface of the base plate 100 away from the heating element; the first heat dissipation assembly 300 includes a plurality of first heat dissipation elements 310 arranged between two adjacent groups of heat pipe assemblies 200, the first heat dissipation elements 310 abut against the base plate 100, and along the X direction, the first heat dissipation element 310 includes a pressing block 311 arranged at least on one side, and the pressing block 311 can limit the heat absorbing portion 211 between the pressing block 311 and the base plate 100. The heat absorbing part 211 can be fixed by the pressing block 311, so that the contact between the bottom plate 100 and the heat pipe 210 and the heat pipe 210 and the first heat sink 310 is more firmly established, thereby improving the structural stability of the heat sink, and at the same time, it is beneficial to ensure the heat conduction between the bottom plate 100 and the heat pipe 210 and the heat pipe 210 and the first heat sink 310, thereby improving the heat dissipation power of the heat sink. At the same time, the pressing block 311 has a simple structure, and the pressing block 311 belongs to the structure of the first heat sink 310, and does not need to be assembled and fixed separately, which is easy to operate and is beneficial to improving the assembly and disassembly efficiency of the heat sink.

[0044] Furthermore, if Figure 2 and Figure 3The first heat sink 310 also includes a heat sink 312, which includes a fixing plate 3121 and a first fin 3122. The fixing plate 3121 is connected to the bottom plate 100. The first fin 3122 is perpendicular to the fixing plate 3121 and extends away from the bottom plate 100. There are multiple first fins 3122, which are arranged in parallel and at intervals along the X direction to form a heat sink 312 structure, so that the heat sink 312 can absorb heat from the heat pipe 210 and conduct it outward through the first heat sink and the gap between the first heat sinks, which is conducive to improving the heat dissipation efficiency. The pressing block 311 is arranged on the first fin 3122 outside the heat sink 312. The pressing block 311 has a simple structure and is easy to process.

[0045] Optionally, the fixing plate 3121 of the heat dissipation portion 312 is fixedly connected to the bottom plate 100 , which can fix the heat dissipation portion 312 and fix the pressing block 311 on the side of the bottom plate 100 away from the heat absorption portion 211 .

[0046] When a pressing block 311 is provided on both sides of the heat dissipation portion 312 along the X direction, the pressing block 311 limits at least one heat absorption portion 211, and the pressing block 311 of the adjacent first heat dissipation member 310 can limit the remaining heat absorption portions 211, which is beneficial to reducing the size of the pressing block 311, and further improving the structural stability of the connection between the pressing block 311 and the first fin 3122, so as to ensure the stability and reliability of the pressing block 311 in fixing the heat absorption portion 211.

[0047] As an embodiment, each group of heat pipe assemblies 200 includes two heat pipes 210. In this case, a pressing block 311 is provided on both sides of each heat dissipation portion 312, and each pressing block 311 is used to fix a heat absorption portion 211, so that the pressing blocks 311 on both sides of the heat dissipation portion 312 have the same length to form a symmetrical structure, which is conducive to avoiding the occurrence of reverse installation and has a fool-proof effect. Of course, the pressing blocks 311 on both sides can also be staggered, and this embodiment is not limited to this.

[0048] Of course, in other embodiments, each heat pipe assembly 200 may also include three heat pipes 210, four heat pipes 210, five heat pipes 210, or even more, which is not limited in this embodiment. Preferably, when the number of heat pipes 210 in each heat pipe assembly 200 is an even number, if the sizes of the pressing blocks 311 on both sides of the heat dissipation portion 312 are the same, that is, the number of heat pipes 210 fixed by the pressing blocks 311 is the same, it is helpful to avoid the reverse installation and has a fool-proof effect.

[0049] Please continue to see Figure 2 and Figure 3, the multiple heat absorbing parts 211 of the multiple heat pipes 210 are arranged in parallel and in contact along the X direction, so that the heat absorbing parts 211 can contact each other for heat conduction, thereby improving the heat uniformity effect between the multiple heat pipes 210. Optionally, the cross-sectional shape of the heat absorbing part 211 is square, thereby further increasing the contact area between adjacent heat absorbing parts 211, thereby increasing the heat conduction power between the heat absorbing parts 211. Furthermore, the size of the heat absorbing part 211 along the X direction is larger than the size of the heat absorbing part 211 along the Z direction (the second direction), so as to increase the contact area between the heat absorbing part 211 and the base plate 100, which is beneficial to improve the heat absorption efficiency of the heat absorbing part 211 from the base plate 100, thereby improving the thermal conductivity efficiency of the heat dissipation device. The Z direction here is arranged perpendicular to the X direction. The side with a smaller size contacts the first heat sink 310. While ensuring the contact area, the structure of the heat absorbing part 211 also simplifies the production difficulty of the heat pipe 210 as much as possible, which is beneficial to reducing the production cost. Exemplarily, the cross-sectional size of the heat absorbing portion 211 is 4 mm*6 mm, that is, a 6 mm wide surface contacts the bottom plate 100 , thereby increasing the contact area between the heat absorbing portion 211 and the bottom plate 100 .

[0050] The heat pipe 210 further includes two bending portions 212 and two heat conducting portions 213. The two bending portions 212 are respectively connected to the two ends of the heat absorbing portion 211, and the two heat conducting portions 213 are respectively connected to one end of the two bending portions 212 away from the heat absorbing portion 211. The heat conducting portions 213 can be arranged at any desired position through the bending portions 212, which is conducive to ensuring the flexibility of the structure of the heat pipe 210. The heat dissipation device also includes a second heat dissipation assembly 400 arranged between the heat pipe assemblies 200. Both sides of the multiple heat conducting portions 213 of each group of heat pipe assemblies 200 along the X direction can abut against the second heat dissipation assembly 400, so as to conduct the heat of the heat conducting portions 213 to the second heat dissipation assembly 400 and dissipate the heat.

[0051] Further, the heat conducting parts 213 of the multiple heat pipes 210 of each group are arranged in the same plane to ensure that when the side of the second heat dissipation component 400 is a plane, each heat conducting part 213 can contact the second heat dissipation component 400, which is conducive to simplifying the structure of the heat dissipation device. In order to achieve the coplanar arrangement of the heat conducting parts 213 between two adjacent first heat dissipation components 310, the heat conducting parts 213 can be bent to the corresponding position through each bending part 212. Preferably, the multiple heat conducting parts 213 arranged in the same plane are evenly distributed along the Y direction (third direction) to ensure that the heat conducting parts 213 are uniformly conductive and dissipate heat. In this embodiment, the Y direction is perpendicular to the X direction and the Z direction, and the X direction, the Y direction and the Z direction are only used to illustrate the relationship between the structures, and this embodiment does not limit this.

[0052] Optionally, the heat conducting portion 213 extends along the Z direction, and the size of the heat conducting portion 213 along the X direction is smaller than the size of the heat absorbing portion 211 along the Y direction, so as to increase the contact area between the heat conducting portion 213 and the second heat dissipation component 400, thereby improving the heat conduction efficiency.

[0053] The bottom plate 100 includes a mounting portion 110 and a plurality of uniform temperature heat pipes 120. The mounting portion 110 is used to set a heating element. The mounting portion 110 is provided with a mounting groove. The plurality of uniform temperature heat pipes 120 are arranged in the mounting groove. The plurality of uniform temperature heat pipes 120 are arranged in parallel and in contact with each other, so that heat conduction can be achieved between adjacent uniform temperature heat pipes 120 to improve the uniform temperature effect of the bottom plate 100. At the same time, the cross-sectional shape of the uniform temperature heat pipe 120 is square, which can increase the contact area between the uniform temperature heat pipe 120 and the heating element, increase the heat absorption area, and thus increase the heat absorption effect. At the same time, the square cross-sectional shape can also increase the contact area between adjacent uniform temperature heat pipes 120 and improve the thermal conductivity between adjacent uniform temperature heat pipes 120.

[0054] like Figure 2 and Figure 4 As shown, further, the heat dissipation device also includes a second heat dissipation assembly 400, and the second heat dissipation assembly 400 includes a plurality of second heat dissipation elements 410 arranged between two adjacent groups of heat pipe assemblies 200. The second heat dissipation elements 410 are arranged on the side of the first heat dissipation element 310 away from the base plate 100, thereby increasing the heat dissipation area of ​​the heat dissipation device and improving the heat dissipation power of the heat dissipation device.

[0055] Specifically, the second heat sink 410 includes two groups of heat sink units 411 that are relatively arranged, each heat sink unit 411 includes a heat sink 4111, a plurality of second fins 4112 and a plurality of support plates 4113, the plurality of second fins 4112 are parallel and spaced apart along the Z direction on the heat sink 4111, the support plates 4113 are parallel to the second fins 4112, and the plurality of support plates 4113 are spaced apart on the heat sink 4111, the support plates 4113 of the two relatively groups of heat sink units 411 are fixedly connected one by one, and a support position after the second heat sink 410 is assembled is formed between the plurality of support plates 4113, the support plates 4113 of the two relatively arranged heat sink units 411 can be assembled by welding, and the support plates 4113 achieve a supporting and fixing effect, and will not cause the heat sink 411 to move, resulting in a loose welding between the heat pipe 210 and the second heat sink 410.

[0056] Furthermore, the heat dissipation unit 411 is extruded, which is beneficial to reducing processing costs. Specifically, the bottom of the heat dissipation unit 411 is a flat design, and after extrusion molding, no additional machining costs are required, and only cutting is required, without CNC secondary processing.

[0057] Note that the above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A heat dissipation device, characterized in that: include: A bottom plate (100) configured to fix a heating element; A plurality of groups of heat pipe assemblies (200), each group of heat pipe assemblies (200) being arranged at intervals along a first direction, and the heat pipe assemblies (200) comprising a plurality of heat pipes (210), each heat pipe (210) being of a U-shaped structure, and the heat pipe (210) comprising a heat absorbing portion (211) abutting against an end surface of the bottom plate (100) facing away from the heating element; A first heat dissipation assembly (300), the first heat dissipation assembly (300) comprising a plurality of first heat dissipation elements (310) arranged between two adjacent groups of the heat pipe assemblies (200), the first heat dissipation elements (310) abutting against the bottom plate (100), and along the first direction, the first heat dissipation element (310) comprising a pressing block (311) arranged at least on one side, the pressing block (311) being configured to limit the heat absorption portion (211) between the pressing block (311) and the bottom plate (100).

2. The heat dissipation device according to claim 1, characterized in that: The first heat dissipation element (310) further comprises: A heat dissipation portion (312), the heat dissipation portion (312) comprising a fixing plate (3121) and a first fin (3122), the fixing plate (3121) being connected to the bottom plate (100), the first fin (3122) being perpendicular to the fixing plate (3121) and extending in a direction away from the bottom plate (100), there being a plurality of first fins (3122), the plurality of first fins (3122) being arranged in parallel and at intervals along the first direction, and the pressing block (311) being arranged on the first fin (3122) on the outside of the heat dissipation portion (312).

3. The heat dissipation device according to claim 2, characterized in that: When the pressing blocks (311) are provided on both sides of the heat dissipation portion (312) along the first direction, the pressing blocks (311) limit the position of at least one of the heat absorption portions (211).

4. The heat dissipation device according to claim 1, characterized in that: The multiple heat absorbing parts (211) of the multiple heat pipes (210) are arranged in parallel and in contact with each other along the first direction, the cross-sectional shape of the heat absorbing part (211) is square, and the size of the heat absorbing part (211) along the first direction is greater than the size of the heat absorbing part (211) along the second direction.

5. The heat dissipation device according to claim 1, characterized in that: The heat pipe (210) further comprises: two bending portions (212), the two bending portions (212) being respectively connected to two ends of the heat absorbing portion (211); and Two heat-conducting parts (213), the two heat-conducting parts (213) are respectively connected to one end of the two bending parts (212) away from the heat-absorbing part (211), the heat dissipation device also includes a second heat dissipation component (400) arranged between the heat pipe components (200), and the two sides of the plurality of heat-conducting parts (213) of each group of the heat pipe components (200) along the first direction can be in contact with the second heat dissipation component (400).

6. The heat dissipation device according to claim 5, characterized in that: The heat conducting portion (213) extends along the second direction, and a size of the heat conducting portion (213) along the first direction is smaller than a size of the heat absorbing portion (211) along the third direction.

7. The heat dissipation device according to any one of claims 1 to 6, characterized in that: The bottom plate (100) comprises: A mounting portion (110) configured to be provided with a heating element, wherein a mounting groove is provided on the mounting portion (110); and A plurality of temperature-averaging heat pipes (210) (120) are arranged in the installation groove, the plurality of temperature-averaging heat pipes (210) (120) are arranged in parallel and in contact with each other, and the cross-sectional shape of the temperature-averaging heat pipes (210) (120) is square.

8. The heat dissipation device according to any one of claims 1 to 6, characterized in that: The heat dissipation device also includes: A second heat dissipation assembly (400), the second heat dissipation assembly (400) comprising a plurality of second heat dissipation elements (410) arranged between two adjacent groups of the heat pipe assemblies (200), the second heat dissipation elements (410) being arranged on a side of the first heat dissipation element (310) facing away from the bottom plate (100).

9. The heat dissipation device according to claim 8, characterized in that: The second heat dissipation element (410) comprises: Two groups of heat dissipation units (411) are arranged opposite to each other, each of the heat dissipation units (411) comprises a heat dissipation plate (4111), a plurality of second fins (4112) and a plurality of support plates (4113), the plurality of second fins (4112) are arranged on the heat dissipation plate (4111) in parallel and at intervals along a second direction, the support plates (4113) are parallel to the second fins (4112), and the plurality of support plates (4113) are arranged on the heat dissipation plate (4111) at intervals, and the support plates (4113) of the two groups of heat dissipation units (411) are fixedly connected in a one-to-one correspondence.

10. The heat dissipation device according to claim 9, characterized in that: The heat dissipation unit (411) is formed by extrusion.

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