Heat dissipation apparatus for outdoor server, and outdoor server

Abstract

Provided in the embodiments of the present application are a heat dissipation apparatus for an outdoor server, and the outdoor server. The heat dissipation apparatus for an outdoor server comprises: a chassis, which is provided with an accommodating cavity for accommodating devices; a heat dissipation assembly, which is arranged on an outer side of the chassis, is in contact with the chassis for heat conduction, is provided with a heat dissipation region for heat dissipation and comprises fans, with the fans being arranged in the heat dissipation region; a cold-end assembly, which is connected to the heat dissipation assembly, wherein the chassis, the heat dissipation assembly and the cold-end assembly are stacked in sequence; and a thermoelectric power generation assembly, which is arranged between the heat dissipation assembly and the cold-end assembly, is in contact with the heat dissipation assembly and the cold-end assembly, is electrically connected to the fans, and supplies power to the fans by means of the temperature difference between the heat dissipation assembly and the cold-end assembly. The present application solves the problem of outdoor edge servers in the related art being unable to reduce heat dissipation energy consumption while ensuring compact structures.

Description

Outdoor server heat dissipation device and outdoor server

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202410532215.1, filed on April 29, 2024, and entitled "Outdoor server heat dissipation device and outdoor server", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] Embodiments of the present application relate to the field of computers, and in particular, to an outdoor server heat dissipation device and an outdoor server. BACKGROUND

[0004] In order to better cope with the latency and security requirements of data processing, edge servers are usually used to deploy computing nodes at the network edge to provide efficient and intelligent computing, storage, network resources nearby, thereby greatly relieving the work load of data centers and reducing the latency of data.

[0005] Unlike traditional data center servers, edge servers are mostly used in outdoor scenarios, and their working environment must meet very high waterproof and dustproof levels (Ingress Protection 65, IP65 or above). Therefore, outdoor edge servers mostly use an external heat sink forced air cooling mode. The heat of the heat chip is conducted to the external heat sink through the internal heat-conducting boss, and the heat is carried away by the fan. Although this method can effectively reduce the temperature of the chip, the heat dissipation efficiency is low, and a fan with large power consumption is often needed to provide sufficient air volume, which contradicts the low overall power consumption requirement of the edge server.

[0006] Some solutions use an external heat sink to achieve heat dissipation, but the overall space occupied by the edge server has certain requirements, and the compactness of the structure is poor, which makes it difficult for the edge server to meet the actual installation requirements.

[0007] Therefore, the existing edge server cannot improve the heat dissipation efficiency while ensuring compact structure. SUMMARY

[0008] Embodiments of the present application provide an outdoor server heat dissipation device and an outdoor server to at least solve the problem that the related art outdoor edge server cannot reduce heat dissipation energy consumption while ensuring compact structure.

[0009] According to a first aspect of the present application, an outdoor server heat dissipation device is provided, comprising: a cabinet having a receiving cavity for accommodating devices; a heat dissipation assembly arranged outside the cabinet and in contact with the cabinet for heat conduction, the heat dissipation assembly having a heat dissipation area for heat dissipation, the heat dissipation assembly comprising a fan arranged in the heat dissipation area; a cold end assembly connected with the heat dissipation assembly, and the cabinet, the heat dissipation assembly and the cold end assembly being stacked in sequence; a thermoelectric power generation assembly arranged between the heat dissipation assembly and the cold end assembly, the thermoelectric power generation assembly being in contact with the heat dissipation assembly and the cold end assembly and being electrically connected with the fan, the thermoelectric power generation assembly supplying power to the fan through the temperature difference between the heat dissipation assembly and the cold end assembly.

[0010] In an example embodiment, the cold end assembly comprises: a base body stacked with the cold end assembly; a radiation cooling element arranged on a surface of the base body and radiating heat outward to cool the base body.

[0011] In an example embodiment, the cold end assembly further comprises a phase change energy storage element, the base body has a cavity, and the phase change energy storage element is filled in the cavity and stores the cold energy generated by the radiation cooling element.

[0012] In an example embodiment, the base body comprises an outer layer and an inner layer, the inner layer is located in the outer layer, the inner layer has a cavity, and the outer layer is arranged in a spaced manner with the inner layer and has a thermal insulation layer filled with a thermal insulation material.

[0013] In an example embodiment, the base body has a mounting hole arranged therethrough, the mounting hole is arranged in a spaced manner with the cavity, and the outdoor server heat dissipation device further comprises a fastener, the fastener is arranged in the mounting hole and connected with the heat dissipation assembly.

[0014] In an example embodiment, the radiation cooling element comprises at least one of an applicable inorganic mixed paint and an applicable polymer material, the inorganic mixed paint comprises at least one of aluminum oxide, silicon dioxide and silicon nitride, and the polymer material comprises at least one of polyvinyl chloride, polystyrene, ethyl cellulose and cellulose acetate.

[0015] In an example embodiment, the radiation cooling element is arranged on an inner wall surface and / or an outer wall surface of the base body.

[0016] In an example embodiment, the outdoor server heat dissipation device further comprises a thermal insulation element arranged between the heat dissipation assembly and the cold end assembly and blocking the temperature transmission between the heat dissipation assembly and the cold end assembly.

[0017] In an example embodiment, the thermal insulation element has a through hole arranged therethrough, and at least a part of the thermoelectric power generation assembly is arranged in the through hole.

[0018] In an example embodiment, the outdoor server heat dissipation device further comprises a voltage boosting circuit module, which is electrically connected to the thermoelectric power generation assembly and converts the voltage generated by the thermoelectric power generation assembly into a stable direct current voltage.

[0019] In an example embodiment, the voltage boosting circuit module is arranged in the heat insulation member and is covered by the heat insulation member.

[0020] In an example embodiment, the thermoelectric power generation assembly comprises: a thermoelectric element for generating electricity; a heat conduction layer arranged at least one of the thermoelectric element and the heat dissipation assembly, the thermoelectric element and the cold end assembly; a heat insulation member arranged at the surface of the thermoelectric element not in contact with the heat dissipation assembly and the cold end assembly.

[0021] In an example embodiment, the heat dissipation assembly and / or the cold end assembly has a fixing position, and at least a part of the thermoelectric element is positioned at the fixing position.

[0022] In an example embodiment, the fixing position is a groove, the length and / or width of the groove is larger than the length and / or width of the thermoelectric element, and the heat conduction member is located in the gap between the groove and the thermoelectric element.

[0023] In an example embodiment, the heat dissipation assembly comprises: a first plate body connected to the case; a second plate body spaced and stacked with the first plate body, a heat dissipation area is formed between the first plate body and the second plate body, and the thermoelectric power generation assembly is in contact with the second plate body; and a heat conduction member connected to the first plate body and the second plate body, and the first plate body transmits heat to the second plate body through the heat conduction member.

[0024] In an example embodiment, the heat dissipation assembly further comprises a heat preservation member, which is wrapped outside the heat conduction member and preserves the heat conduction member.

[0025] In an example embodiment, the heat dissipation assembly further comprises fins connected to the first plate body and / or the second plate body, and the fan blows air to the fins.

[0026] In an example embodiment, the minimum distance between the air outlet of the fan and the fins is 3-5 mm.

[0027] In an example embodiment, along the stacking direction between the first plate body and the second plate body, the distance on both sides of the fan is less than the distance between the two ends of the fins by 7-13 mm.

[0028] In an example embodiment, one side of the case is open, and the heat dissipation assembly is arranged on the open side of the case and covers the opening.

[0029] In an example embodiment, a heat transfer member is arranged in the case, and the heat transfer member is in contact with the heat generating device and the heat dissipation assembly in the case.

[0030] According to a second aspect of the present application, an outdoor server is provided, comprising a component and the server heat dissipation device described above, the component comprising at least one of a graphics processing unit (CPU), a memory, and a hard disk, and the server heat dissipation device being used for dissipating heat for the component.

[0031] The technical solution of the present application has two effects of the heat dissipation assembly. On the one hand, the heat in the case is dissipated through the heat dissipation assembly by the fan blowing. On the other hand, the heat dissipation assembly serves as a hot end, and a cold end assembly is correspondingly arranged. The cold end assembly serves as a cold end, and a thermoelectric power generation assembly is arranged. The thermoelectric power generation assembly generates electricity by using the temperature difference between the cold end and the hot end. The electricity generated by the thermoelectric power generation assembly is supplied to the fan, so that the fan can generate electricity by using the heat generated by the case. Thus, the demand for energy of the case is reduced, the power consumption of the server as a whole is reduced, and a high heat dissipation efficiency is ensured. In order to enable the outdoor server to meet the installation requirements of space, the case, the heat dissipation assembly, and the cold end assembly are stacked in sequence in the embodiment, and the thermoelectric power generation assembly is also stacked between the heat dissipation assembly and the cold end assembly. In this way, the heat dissipation assembly, the cold end assembly, and the thermoelectric power generation assembly only need to occupy a small part of the space on one side of the case as a whole, so that the overall size of the outdoor server will not increase greatly, and the space environment requirements of the installation scene can still be met. The above arrangement mode is matched in two aspects. On the one hand, the arrangement of the heat dissipation assembly, the cold end assembly, and the thermoelectric power generation assembly enables the heat of the case to provide energy for the heat dissipation of the fan, so that the heat of the case is utilized, and the power consumption of the server is reduced. On the other hand, the arrangement mode of the heat dissipation assembly, the cold end assembly, and the thermoelectric power generation assembly enables the overall space occupation to be small, and the server as a whole can still ensure a compact structure. BRIEF DESCRIPTION OF DRAWINGS

[0032] Fig. 1 is a front view of the outdoor server heat dissipation device of the present application;

[0033] Fig. 2 is a top view of the outdoor server heat dissipation device of the present application;

[0034] Fig. 3 is a side view of the outdoor server heat dissipation device of the present application;

[0035] Fig. 4 is a circuit schematic diagram of the boost circuit module of the present application.

[0036] Wherein, the above-mentioned drawings include the following reference signs: 10, cabinet; 20, heat dissipation assembly; 21, fan; 22, first plate body; 23, second plate body; 24, heat conduction piece; 25, heat preservation piece; 26, fin; 30, cold end assembly; 31, base body; 32, radiation cooling piece; 33, phase change energy storage piece; 40, thermoelectric power generation assembly; 41, thermoelectric element; 50, fastener; 60, heat insulation piece; 70, voltage boosting circuit module. DETAILED DESCRIPTION

[0037] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0039] In the present application, unless otherwise specified, the orientation words such as "up, down, top, bottom" are generally directed to the direction shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0040] In order to solve the problem that the outdoor edge server in the related art cannot reduce heat dissipation energy consumption while ensuring compact structure, the present application provides an outdoor server heat dissipation device and a server.

[0041] An outdoor server heat dissipation device as shown in FIGS. 1 to 3, comprising a cabinet 10, a heat dissipation assembly 20, a cold end assembly 30 and a thermoelectric power generation assembly 40, the cabinet 10 has a containing cavity for containing devices; the heat dissipation assembly 20 is arranged outside the cabinet 10 and is in contact with the cabinet 10 for heat conduction, the heat dissipation assembly 20 has a heat dissipation area for heat dissipation, the heat dissipation assembly 20 comprises a fan 21, the fan 21 is arranged in the heat dissipation area; the cold end assembly 30 is connected with the heat dissipation assembly 20, and the cabinet 10, the heat dissipation assembly 20 and the cold end assembly 30 are stacked in sequence; the thermoelectric power generation assembly 40 is arranged between the heat dissipation assembly 20 and the cold end assembly 30, the thermoelectric power generation assembly 40 is in contact with the heat dissipation assembly 20 and the cold end assembly 30, and is electrically connected with the fan 21, the thermoelectric power generation assembly 40 supplies power to the fan 21 through the temperature difference between the heat dissipation assembly 20 and the cold end assembly 30.

[0042] The embodiment sets the heat dissipation assembly 20 on the case 10, the heat dissipation assembly 20 has two aspects of effects, one aspect is that the fan 21 blows, realizes the effect that the heat in the case 10 is dissipated through the heat dissipation assembly 20, the other aspect is that the heat dissipation assembly 20 is the hot end, correspondingly, the cold end assembly 30 is set up, the cold end assembly 30 is the cold end, and the thermoelectric power generation assembly 40 is set up, the thermoelectric power generation assembly 40 realizes power generation by using the temperature difference between the cold end and the hot end, and the electric quantity generated by the thermoelectric power generation assembly is supplied to the fan 21, so that the fan 21 can generate power by using the heat generated by the case 10, thereby reducing the demand for energy of the case 10, reducing the overall power consumption of the server, and ensuring high heat dissipation efficiency. At the same time, in order to enable the outdoor server to meet the installation requirements of space, the embodiment adopts the mode that the case 10, the heat dissipation assembly 20 and the cold end assembly 30 are stacked in sequence, and the thermoelectric power generation assembly 40 is also stacked between the heat dissipation assembly 20 and the cold end assembly 30, so that the heat dissipation assembly 20, the cold end assembly 30 and the thermoelectric power generation assembly 40 only need to occupy a small part of the space on one side of the case 10, so that the overall size of the outdoor server will not increase greatly, and the space environment requirements of the installation scene can still be met. The above setting mode is matched by two aspects, one aspect is that the heat of the case 10 can provide energy for the heat dissipation of the fan 21 by setting the heat dissipation assembly 20, the cold end assembly 30 and the thermoelectric power generation assembly 40, so as to realize the utilization of the heat of the case 10, reduce the energy consumption of the server power supply, and the other aspect is that the setting mode of the heat dissipation assembly 20, the cold end assembly 30 and the thermoelectric power generation assembly 40 makes the overall space occupation small, and the server as a whole can still ensure a compact structure.

[0043] It should be noted that the outdoor server to which the embodiment is directed is mainly an edge server, of course, other types of servers can also adopt the setting mode of the embodiment, and the same technical effects can also be achieved.

[0044] As shown in FIG. 1 and FIG. 3, in the embodiment, the cold end assembly 30 comprises a base body 31 and a radiation cooling element 32, the base body 31 is the basic component of the cold end assembly 30, and the shape thereof can be adjusted as required. The base body 31 is stacked with the cold end assembly 30, thereby ensuring the effect of compact structure. The radiation cooling element 32 is arranged on the surface of the base body 31 and radiates heat outwardly. In this way, the radiation cooling element 32 has excellent reflectivity (>90%) in the solar radiation band (0.3-4.0 μm) and excellent emissivity (>90%) in the atmospheric window, so that the radiation cooling element 32 can radiate the heat of the base body 31 to the outer space through the atmospheric window, thereby cooling the base body 31 and enabling the cold end assembly 30 to maintain a lower temperature. Compared with other refrigeration components, the radiation cooling element 32 has a more stable effect of generating cold, thereby ensuring that the temperature of the cold end is more stable and the power generation effect is ensured. Of course, in addition to the radiation cooling element 32, other components capable of generating cold can also be used.

[0045] In the embodiment, the cold end assembly 30 further comprises a phase change energy storage element 33, the base body 31 has a cavity, and the phase change energy storage element 33 is filled in the cavity. The phase change energy storage element 33 functions to store the cold generated by the radiation cooling element 32. That is, the cold generated by the radiation cooling element 32 is absorbed by the phase change energy storage element 33 and stored in the phase change energy storage element 33, so that the cold end assembly 30 can store cold in addition to the refrigeration effect, thereby enabling the temperature of the cold end assembly 30 to be maintained stable. That is, the phase change energy storage element 33 is constantly "storing cold" through the radiation cooling element 32 outside the base body 31, especially at night, the maximum amount of stored cold is formed, and the cold end temperature reaches the lowest. The introduction of the phase change energy storage element 33 can greatly reduce the interference caused by the drastic fluctuation of the external environment temperature, maintain the stable temperature of the cold end of the thermoelectric generator assembly 40, and thereby avoid large voltage fluctuation.

[0046] In order to further ensure the temperature of the cold end assembly 30, the base body 31 of the embodiment comprises an outer layer and an inner layer, the inner layer is located in the outer layer, the inner layer has a cavity, and the outer layer and the inner layer are spaced apart and have a heat insulation layer filled with heat insulation material. In this way, through the above-mentioned structure of the base body 31 in the form of a sandwich, the spacing between the inner and outer layers realizes the isolation of the temperature of the phase change energy storage element 33 and the external temperature, and cooperates with the heat insulation layer in the sandwich, thereby ensuring that the cold stored by the phase change energy storage element 33 can be maintained in the base body 31 and will not escape outwardly in large amounts, thereby ensuring the temperature of the cold end and the power generation amount and stability of the thermoelectric generator assembly 40.

[0047] In some embodiments, the heat insulation layer can be made of heat insulation foam and the like, and can be selected as required as long as it can realize the heat insulation effect.

[0048] As shown in FIG. 2, in the present embodiment, in order to realize the installation and fixation of the cold end assembly 30, the base body 31 of the present embodiment has an installation hole, the extension direction of the installation hole is the same as the stacking direction between the heat dissipation assembly 20 and the cold end assembly 30, and the through hole is arranged in a penetrating manner through the base body 31, and in order to avoid the influence of the arrangement of the through hole on the phase change energy storage member 33 in the cavity of the base body 31, the installation hole is arranged separately from the cavity in the present embodiment, that is, the inner wall of the installation hole is substantially formed by the base body 31, thereby realizing the separation between the cavity and the installation hole. Correspondingly, the outdoor server heat dissipation device further comprises a fastener 50, which can be a bolt or the like, the fastener 50 is arranged in the installation hole and connected with the heat dissipation assembly 20, thereby realizing the installation and fixation of the base body 31 on the heat dissipation assembly 20, and the fixation of the cold end assembly 30 is realized. Of course, in addition to the above arrangement, a buckle can be arranged between the cold end assembly 30 and the heat dissipation assembly 20, or the two can be fixed together by an external frame.

[0049] In some embodiments, the radiation cooling member 32 comprises at least one of an applicable inorganic mixed coating material and an applicable polymer material, the inorganic mixed coating material comprises at least one of aluminum oxide, silicon dioxide and silicon nitride, and the polymer material comprises at least one of polyvinyl chloride, polystyrene, ethyl cellulose and cellulose acetate. The phase change energy storage member 33 of the present embodiment mainly utilizes the characteristics of absorbing or releasing a large amount of latent heat when the material undergoes a physical phase change to "store cold" or "store heat", which is commonly seen in gas-liquid, solid-gas and solid-liquid three phase changes. In order to prevent the pressure in the cavity from being too high after the material undergoes a phase change, the present embodiment adopts a granular inorganic solid-liquid phase change material, and the phase change temperature is between 25-30℃.

[0050] As shown in FIGS. 1 and 3, the base body 31 of the present embodiment adopts an open bottom, and the top, side and other positions adopt a closed structure, so that the base body 31 can be directly buckled above the heat dissipation assembly 20, and the other side of the base body 31 at the bottom is covered with the radiation cooling member 32, thereby ensuring the overall cooling effect, and the bottom opening can not be provided with the radiation cooling member 32, because on the one hand the phase change energy storage member 33 in the cavity will shield the radiation cooling member 32 at the bottom, thereby greatly affecting the cold storage effect, and on the other hand the setting of the bottom opening is not conducive to the setting of the radiation cooling member 32, and the design of the bottom opening can facilitate the contact between the thermoelectric generation assembly 40 and the phase change energy storage member 33, thereby ensuring the contact and conduction between the thermoelectric generation assembly 40 and the cold end assembly 30.

[0051] In some embodiments, the thickness of the top and side of the base body 31 is 1-3mm, and in the present embodiment, the thickness is 2mm, thereby facilitating the formation of the sandwich layer and ensuring the overall structural strength of the base body 31.

[0052] In some embodiments, the radiation cooling member 32 can be arranged on the inner wall surface and / or the outer wall surface of the base body 31. In this embodiment, the radiation cooling member 32 is only arranged on the outer wall surface of the top and side of the base body 31, so that the cold storage effect can be ensured and the material can be saved.

[0053] As shown in FIG. 1, in this embodiment, the cabinet 10, the heat dissipation assembly 20 and the cold end assembly 30 are arranged in sequence from bottom to top, so that the cabinet 10 as the bottom layer can ensure the stability of the whole server and avoid tilting and the like, and the cold end assembly 30 at the top can ensure that the radiation cooling member 32 radiates outward to ensure the full play of the cold storage effect and avoid the radiation being blocked, thereby ensuring the reliability of the cold storage. The heat dissipation assembly 20 in the middle can not only facilitate the heat transfer between the heat dissipation assembly 20 and the cabinet 10 to reduce the loss in the heat transfer process, but also facilitate the formation of a temperature difference between the heat dissipation assembly 20 and the cold end assembly 30, thereby ensuring that the power generation of the thermoelectric power generation assembly 40 is good.

[0054] In order to further improve the compactness of the structure, in this embodiment, the cold end assembly 30 and the heat dissipation assembly 20 are arranged in a manner that the orthographic projection of the cold end assembly 30 and the heat dissipation assembly 20 from top to bottom is located within the range of the cabinet 10, only a small part of the heat dissipation assembly 20 will protrude from the range of the cabinet 10, and the other parts are located directly above the cabinet 10, which is conducive to further improving the compactness of the structure and meeting the needs of the installation environment.

[0055] In this embodiment, the cold end assembly 30 and the heat dissipation assembly 20 are stacked on top of each other, and there is a large temperature difference between the two, so in order to avoid the temperature transfer between the two, the outdoor server heat dissipation device of this embodiment further comprises a heat insulating member 60 arranged between the upper and lower positions of the heat dissipation assembly 20 and the cold end assembly 30. In this way, the heat insulating member 60 can block the temperature transfer between the heat dissipation assembly 20 and the cold end assembly 30, thereby ensuring the reliable stability of the cold end assembly 30 and the heat dissipation assembly 20 as the cold end and the hot end respectively.

[0056] Since the heat insulating member 60 is arranged below the cold end assembly 30, the heat insulating member 60 is also located below the base body 31. Since the bottom of the base body 31 is open, the heat insulating member 60 substantially functions as the bottom entity of the base body 31, that is, the heat insulating member 60 blocks the bottom opening of the base body 31, so that the heat insulating member 60 and the base body 31 together form a closed cavity accommodating the phase change energy storage member 33, and the phase change energy storage member 33 is supported on the heat insulating member 60.

[0057] In some embodiments, the size of the heat insulating member 60 is greater than the size of the opening at the bottom of the base body 31 and less than or equal to the size of the cabinet 10, where the size refers to the size of the lateral area. Of course, the size and thickness of the heat insulating member 60 can be adjusted accordingly.

[0058] The heat insulation member 60 of the embodiment adopts heat insulation bubble cotton, and of course, can be selected according to the needs, as long as the heat insulation effect can be achieved.

[0059] Since the thermoelectric generation assembly 40 of the embodiment is also arranged between the heat dissipation assembly 20 and the cold end assembly 30, the thermoelectric generation assembly 40 is substantially located at the same position as the heat insulation member 60, and therefore, the embodiment is provided with a through hole penetrating the heat insulation member 60, and at least a part of the thermoelectric generation assembly 40 is arranged in the through hole. In this way, the heat insulation member 60 can not only insulate the cold end and the hot end, but also fix the thermoelectric generation assembly 40, so as to realize the positioning and installation of the thermoelectric generation assembly 40.

[0060] In some embodiments, the thermoelectric generation assembly 40 can be completely accommodated in the through hole of the heat insulation member 60, or can partially protrude from the through hole of the heat insulation member 60. The embodiment adopts the mode that the upper and lower ends of the thermoelectric generation assembly 40 protrude from the through hole of the heat insulation member 60, so that the thermoelectric generation assembly 40 protrudes from the upper and lower sides of the heat insulation member 60, and the protruding part can better contact the cold end and the hot end, i.e., the phase change energy storage member 33 of the cold end assembly 30 and the second plate body 23 of the heat dissipation assembly 20, so as to ensure the acquisition of temperature and the effect of thermoelectric generation.

[0061] In the embodiment, the outdoor server heat dissipation device further comprises a boost circuit module 70, which is electrically connected with the thermoelectric generation assembly 40, and converts the voltage generated by the thermoelectric generation assembly 40 into a stable direct current voltage, i.e., makes the potential difference generated by the thermoelectric generation assembly 40 form a stable direct current voltage after boost regulation by the boost circuit module 70, so as to supply power to the external heat dissipation fan 21, and ensure the stability of the power supply.

[0062] As shown in FIG. 4, the boost circuit module 70 of the embodiment mainly comprises a DC-DC (direct current-direct current) conversion chip, capacitors C1 and C2, resistors R1 and R2, and an inductor L1, and the circuit board is fixed at the center position between the thermoelectric elements 41 of the thermoelectric generation assembly 40 by an insulating support stud. The positive electrode of the thermoelectric generation assembly 40 is connected to the positive electrode of the capacitor C1, and the negative electrode and the negative electrode of the capacitor C1 are commonly grounded. The output voltage VOUT in the circuit is stabilized and boosted by the voltage division feedback of the resistors R1 and R2, and the potential difference VIN generated by the thermoelectric generation assembly 40 forms a stable direct current voltage after boost regulation by the boost circuit module 70, so as to supply power to the fan 21.

[0063] The DC-DC conversion chip has an input pin VIN, a ground pin GND, an enable pin EN, a switch pin SW, an output pin VOUT and a feedback pin FB. The potential difference generated by the thermoelectric generation assembly 40 is connected to the input pin VIN, the switch EN is connected to the enable pin EN, when the switch EN inputs a low level, the DC-DC conversion chip is in an off state (OFF), when the switch EN inputs a high level, the DC-DC conversion chip is in an on state (ON), and the output voltage VOUT output by the potential difference generated by the thermoelectric generation assembly 40 after voltage boosting is output through the output pin VOUT.

[0064] Since the voltage boosting circuit module 70 does not need to be in contact with the cold end and the hot end, it only needs to play a role in stabilizing the voltage, and therefore the voltage boosting circuit module 70 can also be arranged in the heat insulating member 60, and unlike the thermoelectric generation assembly 40, the voltage boosting circuit module 70 can be completely covered by the heat insulating member 60 and does not need to be exposed, which on the one hand facilitates installation and fixation, and on the other hand can avoid the voltage boosting circuit module 70 from being affected by the temperature of the cold end and the hot end, thereby ensuring the effect of stabilizing the voltage.

[0065] In the embodiment, the thermoelectric generation assembly 40 includes a thermoelectric element 41, a heat conducting layer and a heat insulating member. The thermoelectric element 41 is a component for generating electricity, which is in contact with the cold end and the hot end, thereby realizing electricity generation by utilizing the temperature difference. The component that is arranged in the heat insulating member 60 and has upper and lower ends protruding from the through hole is the thermoelectric element 41, thereby ensuring effective contact between the thermoelectric element 41 and the phase change energy storage member 33 and the second plate body 23. The heat conducting layer is arranged between at least one of the thermoelectric element 41 and the heat dissipation assembly 20 and the thermoelectric element 41 and the cold end assembly 30. In the embodiment, the heat conducting layer is arranged between the thermoelectric element 41 and the heat dissipation assembly 20 and between the thermoelectric element 41 and the cold end assembly 30. The heat conducting layer can be made of heat conducting silicone grease. The heat conducting silicone grease is used to enable the upper and lower ends of the thermoelectric element 41 to be in effective contact with the heat dissipation assembly 20 and the cold end assembly 30 for heat conduction, thereby ensuring the reliability of the thermoelectric element 41 in obtaining the temperature of the cold end and the temperature of the hot end and ensuring the electricity generation effect. Since the thermoelectric element 41 has a part protruding from the through hole, only the end faces of the upper and lower ends of the thermoelectric element 41 will be in contact with the cold end assembly 30 and the heat dissipation assembly 20 respectively, and the side face of the protruding part will neither be in contact with the heat insulating member 60 nor be in contact with the cold end and the hot end. Therefore, the surface of the thermoelectric element 41 that is not in contact with the heat dissipation assembly 20 and the cold end assembly 30, that is, the circumferential side face of the part of the thermoelectric element 41 protruding from the through hole, is provided with the heat insulating member, thereby preventing the thermoelectric element 41 from being affected by the cold end and the hot end and causing the electricity generation to decrease.

[0066] The thermoelectric element 41 is mainly a semiconductor packaging structure composed of a material having a thermoelectric effect, commonly Bi2Te3, PbTe, ZnSb, etc. The two sides of the thermoelectric element 41 are a cold end and a hot end with a significant temperature difference. Under the driving of the temperature difference, the thermoelectric element 41 will convert heat energy into electrical energy based on the Seebeck effect to power the fan 21. In order to ensure sufficient contact between the thermoelectric element 41 and the cold and hot ends, the two sides of the thermoelectric element 41 are coated with a thermal conductivity silicone grease with a thermal conductivity of 7 W / (m·K). In addition, the gap around the thermoelectric element 41 needs to be filled with thermal insulation foam to prevent the cold end and the hot end on both sides of the thermoelectric element 41 from forming thermal interference and reducing energy conversion efficiency.

[0067] In the present embodiment, the heat dissipation assembly 20 and / or the cold end assembly 30 have a fixing position, and at least a part of the thermoelectric element 41 is positioned at the fixing position. In order to facilitate the quick installation and positioning of the thermoelectric element 41, the present embodiment is provided with a fixing position on the top of the heat dissipation assembly 20 and the bottom of the cold end assembly 30, that is, on the upper surface of the second plate body 23 of the heat dissipation assembly 20 and the lower surface of the phase change energy storage member 33 of the cold end assembly 30. In this way, the upper and lower ends of the thermoelectric element 41 can be positioned in the fixing positions of the cold end assembly 30 and the heat dissipation assembly 20 respectively during installation, thereby realizing the quick and accurate positioning and installation of the thermoelectric element 41.

[0068] The fixing position of the present embodiment adopts a groove, which has a simple structure and is convenient to process. Of course, the fixing position can also be a positioning column or other structures, as long as it can realize the positioning of the position of the thermoelectric element 41 and ensure the stability and accuracy of the installation position.

[0069] The length and / or width of the groove of the present embodiment is larger than that of the thermoelectric element 41. In some embodiments, the length and width of the groove are both 0.1-0.3mm larger than that of the thermoelectric element 41, and in the present embodiment, it is 0.2mm. In this way, the positioning and fixing effect of the groove on the thermoelectric element 41 can be ensured, and the installation can also be facilitated. At the same time, the depth of the groove in some embodiments is about 0.5-2mm, and in the present embodiment, it is 1mm.

[0070] Due to the size relationship between the above-mentioned groove and the thermoelectric element 41 of the present embodiment, there will inevitably be a certain gap between the groove and the thermoelectric element 41. Therefore, the heat conduction layer of the present embodiment is located in the gap between the groove and the thermoelectric element 41, so that the heat transfer performance between the gap and the thermoelectric element 41 is better, and the heat transfer between the thermoelectric element 41 and the cold end and the hot end is also better.

[0071] In order to ensure the power generation, the embodiment is provided with multiple thermoelectric elements 41, which are arranged in the heat insulation member 60 in sequence in the transverse direction, so as to be in contact with the cold end and the hot end. Due to the multiple thermoelectric elements 41, the through holes, the fixing positions and other components and structures matched with the thermoelectric elements 41 can be provided with multiple components and structures as needed, so that each thermoelectric element 41 can be matched with corresponding components and structures, and the stable and reliable power generation effect of each thermoelectric element 41 can be ensured.

[0072] In the embodiment, the heat dissipation assembly 20 includes a first plate body 22, a second plate body 23 and a heat conduction member 24. The first plate body 22 is connected with the case 10, so as to transfer the heat in the case 10 to the first plate body 22. The second plate body 23 is spaced and stacked with the first plate body 22, so that the heat dissipation area is formed between the first plate body 22 and the second plate body 23. According to the arrangement mode that the case 10, the heat dissipation assembly 20 and the cold end assembly 30 are stacked in the up-down direction, the first plate body 22 is actually located below the second plate body 23. Thus, the first plate body 22 below can be in contact with the case 10, and the second plate body 23 above can be in contact with the thermoelectric elements 41 and the heat insulation member 60 of the thermoelectric generation assembly 40. Since the first plate body 22 and the second plate body 23 are spaced, in order to ensure that the heat of the first plate body 22 can be transferred to the second plate body 23, the embodiment is further provided with the heat conduction member 24 between the first plate body 22 and the second plate body 23. The two ends of the heat conduction member 24 are connected with the first plate body 22 and the second plate body 23 respectively. Thus, the heat transferred from the case 10 to the first plate body 22 can be transferred to the second plate body 23 through the heat conduction member 24, and then to the thermoelectric elements 41.

[0073] The first plate body 22 and the second plate body 23 of the embodiment can be made of a uniform temperature aluminum plate or other components as needed, so as to ensure the heat transfer efficiency. The heat conduction member 24 can be made of a heat pipe or other components. The bottom end of the heat conduction member 24 is connected with the first plate body 22, and then the heat conduction member 24 is bent upward to extend for a distance, so as to cross the heat dissipation area and then be connected with the second plate body 23 again, so as to realize the heat transfer cooperation between the heat conduction member 24 and the first plate body 22 and the second plate body 23. Of course, the types of the plate bodies and the heat conduction member 24 can be set as needed.

[0074] Considering that the size of the plate body is large, the heat conduction member 24 of the embodiment is provided with multiple heat conduction members 24, and the heat conduction members 24 are arranged on the opposite sides of the plate body. Thus, the heat transfer is performed on both sides at the same time, the heat transfer efficiency is higher, and the heat transfer is more balanced.

[0075] In the embodiment, the heat dissipation assembly 20 further comprises a heat preservation member 25, which can be made of heat insulation foam or the like. The heat preservation member 25 is wrapped outside the heat conducting member 24, so as to preserve the heat conducting member 24, prevent the heat from being greatly lost or leaked during the heat transfer through the heat conducting member 24, and ensure that the heat transferred to the second plate body 23 can meet the temperature requirement of the hot end, thereby ensuring the power generation effect of the thermoelectric element 41.

[0076] The first plate body 22 and the second plate body 23 of the embodiment are also within the range of the case 10, that is, the first plate body 22 and the second plate body 23 are also within the range of the area directly above the case 10 and do not exceed the boundary of the case 10. In some embodiments, the thickness is set to 3-5 mm. Unlike the above, the heat conducting member 24 of the embodiment is not arranged in the heat dissipation area. Considering the arrangement of a large number of fans 21 and fins 26 and the like in the heat dissipation area, in order to avoid affecting heat dissipation, the heat conducting member 24 of the embodiment is arranged outside the heat dissipation area. Thus, the heat conducting member 24 substantially exceeds the boundary of the case 10. Therefore, in the embodiment, only the heat conducting member 24 and the heat preservation layer thereon exceed the side range of the case 10, and other components are within the area directly above the case 10 and do not exceed the side range of the case 10, thereby ensuring the compactness of the overall structure.

[0077] The second plate body 23 of the embodiment is also provided with through holes, the number and position of which correspond to the mounting holes, so as to cooperate with the mounting holes and the fasteners 50 to realize the mounting and fixation of the cold end assembly 30.

[0078] In the embodiment, since the heat dissipation assembly 20 mainly functions to dissipate heat, the heat dissipation assembly 20 of the embodiment further comprises fins 26, which are arranged in the heat dissipation area and connected with the first plate body 22 and / or the second plate body 23. The fins 26 of the embodiment are arranged in an upright manner with the top end and the bottom end connected with the second plate body 23 and the first plate body 22, respectively, and the fan 21 blows air to the fins 26. In this way, the fins 26 can dissipate heat on one hand, and the heat transferred to the fins 26 is carried away by the blowing of the fan 21, thereby realizing heat dissipation. On the other hand, the fins 26 can support the first plate body 22 and the second plate body 23, so that the heat dissipation assembly 20 becomes a whole, thereby effectively supporting the second plate body 23, the thermoelectric element 41 and the cold end assembly 30 thereon, and ensuring the stability of the overall structure.

[0079] The fins 26 of the embodiment are also arranged in multiple numbers and spaced apart from each other in the heat dissipation area. In some embodiments, in order to ensure effective heat dissipation, the minimum distance between the air outlet of the fan 21 and the fins 26 is 3-5 mm, so as to ensure that the airflow is sealed and uniform in the heat dissipation channel.

[0080] In some embodiments, the distance between the two sides of the fan 21 along the stacking direction between the first plate body 22 and the second plate body 23 is less than the distance 7-13mm between the two ends of the fin 26. That is, the height of the fan 21 is less than the height of the fin 26 by 7-13mm, and in this embodiment, by 10mm. In this way, the uniformity of the airflow is further ensured by the distance between the fan 21 and the fin 26, and as much airflow as possible is ensured to act on the fin 26, avoiding the escape of the airflow.

[0081] In this embodiment, the fan 21 is also provided between the heat dissipation area, and the fan bracket can be connected to at least one of the first plate body 22 and the second plate body 23. The fan 21 is connected to the fan bracket, thereby improving the connection strength of the fan 21 through the fan bracket and ensuring the stability of the fan 21. In some embodiments, the number of fans 21 can be selected as needed. Considering the need for heat dissipation, the fan 21 can be provided with multiple fans, and the fan bracket can be arranged in a row, thereby ensuring that the airflow direction in the heat dissipation area is consistent. In this embodiment, five axial fans 21 with a size of 40*40*28mm are selected for the fan 21, and are fixed on the fan bracket by glue nails. Of course, the number and type of the fan 21 can be selected as needed, and are not limited to the manner of this embodiment.

[0082] In this embodiment, in order to ensure the efficiency of heat transfer from the case 10 to the first plate body 22, an opening is provided on one side of the case 10, and in this embodiment, the top end of the case 10 is provided as an opening. The first plate body 22 of the heat dissipation assembly 20 is arranged on the opening side of the case 10 and covers the opening. In this way, on the one hand, the first plate body 22 can serve as a cover plate of the case 10, shielding and closing the case 10 to ensure the waterproof and dustproof level of the case 10. On the other hand, the first plate body 22 can directly contact the components in the case 10 for heat transfer, thereby improving the heat transfer effect. At the same time, the reduction of the cover plate of the case 10 is also conducive to improving the compactness of the overall structure.

[0083] In this embodiment, a heat transfer member is arranged in the case 10. The heat transfer member can adopt a heat transfer boss structure, and the heat transfer member is in contact with the heat generating device in the case 10 for heat transfer, and is also in contact with the first plate body 22 of the heat dissipation assembly 20 for heat transfer. In this way, the heat generated by the heat generating device can be transferred to the first plate body 22 through the heat transfer member, achieving the purpose of heat dissipation and further heat transfer of the first plate body 22.

[0084] This embodiment also provides an outdoor server, which includes components and the server heat dissipation device described above. The components include at least one of a CPU, a memory, and a hard disk. The server heat dissipation device is used for dissipating heat for the components.

[0085] The working process of the outdoor server heat dissipation device of this embodiment is as follows:

[0086] After the server is powered on and works, the internal components generate a large amount of heat, part of which is conducted to the first plate body 22 through the heat transfer boss at the bottom of the heat sink, and then part of the heat is transferred to the fins 26 in the form of heat conduction, and another part of the heat is conducted to the second plate body 23 above the fins 26 through the heat conduction piece 24 embedded in the first plate body 22, and the temperature of the second plate body 23 rapidly rises after absorbing a large amount of heat, thereby forming the hot end of the thermoelectric generator assembly 40. At the same time, the radiation cooling piece 32 continuously radiates heat to the outer space through the atmospheric window and continuously stores the "cold" in the phase change energy storage piece 33 inside the cavity, and the phase change energy storage piece 33 further transfers the cold to the bottom of the base 31, thereby forming the cold end of the thermoelectric generator assembly 40. After the temperature difference is formed on both sides, the thermoelectric generator assembly 40 starts to generate a potential difference based on the Seebeck effect, and after the voltage is boosted by the voltage boosting circuit module 70, the fan 21 is powered, and the fan 21 blows air on the fins 26 to accelerate heat dissipation at the fins 26, thereby achieving heat dissipation of the server.

[0087] It should be noted that when the temperature difference on both sides of the thermoelectric generator assembly 40 is insufficient, the output voltage of the potential difference generated by the thermoelectric generator assembly 40 after the voltage is boosted is insufficient, and the fan 21 does not work; after the fan 21 works normally, part of the heat in the heat dissipation area is transferred to the air in the form of forced convection, which reduces the heat and temperature of the second plate body 23 to a certain extent, and the potential difference generated by the thermoelectric generator assembly 40 is also reduced accordingly, and the fan 21 may stop rotating. In order to prevent this phenomenon, the selected thermoelectric generator assembly 40 needs to ensure that the potential difference generated after the voltage is boosted is not lower than the lower limit of the normal working voltage of the fan 21.

[0088] In summary, through the cooperation between the above-mentioned components, in the working process, the cold end and the hot end with a large temperature difference are formed on both sides of the thermoelectric generator assembly 40 through radiation and phase change energy storage cooling and heat pipe heat conduction, and the temperature difference is converted into a potential difference based on the Seebeck effect of the thermoelectric element 41 in the thermoelectric generator assembly 40, and the potential difference is boosted to power the fan 21. The whole heat dissipation system is simple in design and high in heat dissipation performance, greatly reduces the energy consumption ratio of the heat dissipation system in the whole machine power consumption, effectively converts the low-grade energy of the chip heat into high-grade energy, and the introduction of the phase change energy storage material also greatly reduces the interference caused by the sharp fluctuation of the external environment temperature, maintains the stability of the cold end temperature of the thermoelectric generator module, thereby avoiding large voltage fluctuations. In addition, the overall structure is compact, without relatively large parts, so that the space required by the whole is small, ensuring that it can be applied to various outdoor scenes.

[0089] It should be noted that the plurality in the above embodiments means at least two.

[0090] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0091] 1. The fan can generate electricity using the heat generated by the case, thereby reducing the demand for case energy, reducing the overall power consumption of the server, and ensuring high heat dissipation efficiency.

[0092] 2. Overall, the heat dissipation assembly, the cold end assembly and the thermoelectric power generation assembly only need to occupy a small part of the space on one side of the case, so that the overall size of the outdoor server will not increase greatly, and the space environment requirements of the installation scene can still be met.

[0093] 3. The entire heat dissipation system is simple in design and has higher heat dissipation performance, greatly reducing the energy consumption ratio of the heat dissipation system in the overall machine power consumption, and effectively converting low-grade energy of chip heat into high-grade energy.

[0094] 4. Greatly reduce the interference caused by the sharp fluctuation of the external environment temperature, keep the cold end temperature of the thermoelectric power generation module stable, so as to avoid generating large voltage fluctuation.

[0095] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should be within the scope of protection of the present application.

[0096] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0097] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0098] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An outdoor server heat dissipation device, characterized in that, The outdoor server heat dissipation device comprises: a cabinet (10) having a receiving cavity for receiving devices; a heat dissipation assembly (20) arranged outside the cabinet (10) and in contact with the cabinet (10) for heat conduction, the heat dissipation assembly (20) having a heat dissipation area for heat dissipation, the heat dissipation assembly (20) comprising a fan (21) arranged in the heat dissipation area; a cold end assembly (30) connected with the heat dissipation assembly (20), and the cabinet (10), the heat dissipation assembly (20) and the cold end assembly (30) being stacked in sequence; a thermoelectric power generation assembly (40) arranged between the heat dissipation assembly (20) and the cold end assembly (30), the thermoelectric power generation assembly (40) being in contact with the heat dissipation assembly (20) and the cold end assembly (30) and being electrically connected with the fan (21), the thermoelectric power generation assembly (40) supplying power to the fan (21) through the temperature difference between the heat dissipation assembly (20) and the cold end assembly (30).

2. The outdoor server heat dissipation device according to claim 1, wherein, The cold end assembly (30) comprises: a base body (31) stacked with the cold end assembly (30); a radiation cooling element (32) arranged on the surface of the base body (31) and radiating heat outward to cool the base body (31).

3. The outdoor server heat dissipation device according to claim 2, wherein, The cold end assembly (30) further comprises a phase change energy storage element (33), the base body (31) having a cavity, the phase change energy storage element (33) being filled in the cavity and storing the cold energy generated by the radiation cooling element (32).

4. The outdoor server heat dissipation device according to claim 3, wherein, The base body (31) comprises an outer layer and an inner layer, the inner layer being located in the outer layer, the inner layer having the cavity, and the outer layer being spaced apart from the inner layer and having a thermal insulation layer filled with thermal insulation material.

5. The outdoor server heat dissipation device of claim 3, wherein, The base body (31) has a mounting hole arranged therethrough, the mounting hole being spaced apart from the cavity, and the outdoor server heat dissipation device further comprises a fastener (50) arranged in the mounting hole and connected with the heat dissipation assembly (20).

6. The outdoor server heat dissipation device of claim 2, wherein, The radiation cooling element (32) comprises at least one of a coatable inorganic hybrid coating and a pastable polymer material, the inorganic hybrid coating comprising at least one of aluminum oxide, silicon dioxide and silicon nitride, and the polymer material comprising at least one of polyvinyl chloride, polystyrene, ethyl cellulose and cellulose acetate.

7. The outdoor server heat dissipation device of claim 2, wherein, The radiation cooling element (32) is arranged on the inner wall surface and / or the outer wall surface of the base body (31).

8. The outdoor server heat dissipation device of claim 1, wherein, The outdoor server heat dissipation device further comprises a thermal insulation element (60) arranged between the heat dissipation assembly (20) and the cold end assembly (30) and blocking the temperature transfer between the heat dissipation assembly (20) and the cold end assembly (30).

9. The outdoor server heat dissipation device according to claim 8, wherein, The thermal insulation element (60) has a through hole arranged therethrough, and at least a part of the thermoelectric power generation assembly (40) is arranged in the through hole.

10. The outdoor server heat dissipation device of claim 9, wherein, The outdoor server heat dissipation device further comprises a voltage boosting circuit module (70) electrically connected with the thermoelectric generator assembly (40) and converting the voltage generated by the thermoelectric generator assembly (40) into stable direct current voltage.

11. The outdoor server heat dissipation device according to claim 10, wherein, The voltage boosting circuit module (70) is arranged in the heat insulating member (60) and is covered by the heat insulating member (60).

12. The outdoor server heat dissipation device of claim 1, wherein, The thermoelectric generator assembly (40) comprises: a thermoelectric element (41) for generating electricity; a heat conducting layer arranged at least one of the heat dissipation assembly (20) and the cold end assembly (30); a heat insulating member arranged at the surface of the thermoelectric element (41) not in contact with the heat dissipation assembly (20) and the cold end assembly (30).

13. The outdoor server heat dissipation device of claim 12, wherein, The heat dissipation assembly (20) and / or the cold end assembly (30) has a fixing position, and at least a part of the thermoelectric element (41) is positioned at the fixing position.

14. The outdoor server heat dissipation device of claim 13, wherein, The fixing position is a groove, and the length and / or width of the groove is larger than the length and / or width of the thermoelectric element (41), and the heat conducting member is located in the gap between the groove and the thermoelectric element (41).

15. The outdoor server heat dissipation device of claim 1, wherein, The heat dissipation assembly (20) comprises: a first plate body (22) connected with the cabinet (10); a second plate body (23) spaced and overlapped with the first plate body (22), and the first plate body (22) and the second plate body (23) form the heat dissipation area, and the thermoelectric generator assembly (40) is in contact with the second plate body (23); a heat conducting member (24) connected with the first plate body (22) and the second plate body (23), and the first plate body (22) transmits heat to the second plate body (23) through the heat conducting member (24).

16. The outdoor server heat dissipation device of claim 15, wherein, The heat dissipation assembly (20) further comprises a heat preservation member (25) wrapped outside the heat conducting member (24) and preserving heat for the heat conducting member (24).

17. The outdoor server heat dissipation device of claim 15, wherein, The heat dissipation assembly (20) further comprises a fin (26) connected with the first plate body (22) and / or the second plate body (23), and the fan (21) blows air to the fin (26).

18. The outdoor server heat dissipation device of claim 17, wherein, The minimum distance between the air outlet of the fan (21) and the fin (26) is 3-5mm.

19. The outdoor server heat dissipation device of claim 17, wherein, The distance on both sides of the fan (21) along the overlapping direction between the first plate body (22) and the second plate body (23) is less than the distance of 7-13mm between both ends of the fin (26).

20. The outdoor server heat dissipation device of claim 1, wherein, One side of the cabinet (10) is open, and the heat dissipation assembly (20) is arranged on the open side of the cabinet (10) and covers the opening.

21. The outdoor server heat dissipation device of claim 20, wherein, The cabinet (10) is provided with a heat transfer member, and the heat transfer member is in contact with the heat generating device and the heat dissipation assembly (20) in the cabinet (10).

22. An outdoor server, characterized by The server heat dissipation device comprises components including at least one of a graphic processor CPU, a memory and a hard disk, and is used for dissipating heat for the components.

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