A high-power heat sink for laser devices

Abstract

The utility model provides a high-power heat sink for laser devices, and relates to the technical field of heat sinks. It includes a hot-end phase-change connector, a cold-end connector, and an intermediate flexible graphite belt, wherein the intermediate flexible graphite belt is assembled and fixed between the hot-end phase-change connector and the cold-end connector through a fixing column; the hot-end connector includes a phase-change cover plate, a supporting bottom plate, and a thermal interface material, wherein the phase-change cover plate is filled with a phase-change material in the middle cavity; the hot-end phase-change connector is connected to the heat source of the laser device, and the thermal interface material is filled therebetween; the cold-end connector includes a metal cover plate, a supporting bottom plate, and a thermal interface material, which is connected to the laser cavity housing, and the outer appearance mainly has heat dissipation fins.

Description

Technical Field

[0001] The utility model relates to the technical field of radiators, in particular to a novel defrosting high-power radiator for laser devices which can reduce energy consumption, improve defrosting efficiency and reduce ambient temperature fluctuation. Background Art

[0002] Usually, the power conversion rate of laser equipment is about 10%, so when the laser is emitted, a large amount of heat will be generated instantaneously, which is prone to local overheating problems. Therefore, even when the thickness of the graphite-based heat conducting belt is high, it is difficult to quickly conduct the heat to other places in time.

[0003] In the prior art, the Chinese patent with the announcement number CN11404003A proposed to transfer the large amount of heat in the laser device to the phase change material component for heat dissipation by using a fine channel cold plate and a heat transfer pipeline; this technology has a pump in the pipeline and a long heat transfer pipeline. If the space is small, it is impossible to install so many heat transfer pipelines and add a pump for active circulation heat transfer, and the heat dissipation capacity is limited. And it needs to be powered on to run the pump for circulation, which belongs to an active thermal control system, which will have heat dissipation risks for laser devices used outdoors; therefore, the utility model proposes a high-power radiator for laser devices to at least partially solve the problems that may exist in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a high-power heat sink for laser devices, which uses phase change materials to quickly absorb the instantaneous heat of the heat source, and uses high thermal conductivity graphite-based heat conducting belts to timely discharge the absorbed heat, forming a passive heat storage and heat transfer device, giving full play to the advantages of both phase change materials and heat conducting belts, and solving the problem of intermittent large-scale heat transmission in laser weapons. In addition, the heat conducting belt is highly flexible and can be installed and used even in a small space, solving the problem of local overheating in a small space area that the existing technology cannot achieve.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A high-power heat sink for a laser device, comprising:

[0007] The hot-end phase change connector is connected to the heat source of the laser; the cold-end connector is connected to the heat dissipation component;

[0008] The hot end phase change connector and the cold end connector are connected via a flexible graphite-based heat conducting belt;

[0009] A thermal interface material layer is further provided between the hot-end phase change connector and the heat source, and / or between the cold-end connector and the heat dissipation component.

[0010] Optionally, the graphite-based thermal conductive belt is an artificial graphite film or a natural graphite film or a graphene film, and the graphite-based thermal conductive belt is formed by stacking and combining multiple layers of graphite-based material films or weaving carbon-based fibers.

[0011] Optionally, the graphite-based thermal conductive belt is provided with multiple layers, and interfaces between the multiple layers are filled with thermal conductive silicone grease and / or thermal conductive gel, or connected by brazing.

[0012] Optionally, a transition layer may be provided between the graphite-based thermal conductive belts, and the transition layer is titanium carbide.

[0013] Optionally, the hot-end phase change connector and the heat source, and the cold-end connector and the heat dissipation component are fixedly connected by screws and nuts.

[0014] Optionally, the heat dissipation component is a heat dissipation housing or a heat dissipation fin;

[0015] The cold end connector is connected to the heat dissipation shell or the heat dissipation fins, or the cold end connector is connected to the heat dissipation shell, and the heat dissipation shell is connected to the heat dissipation fins.

[0016] Optionally, the thermal interface material layer is made of at least two layers of the same or different materials;

[0017] Wherein, each layer of the thermal interface material is one of thermal grease, thermal gel, thermal pad, indium sheet, and graphite-based thermal pad.

[0018] Optionally, the hot end phase change connector comprises: a hot end connector phase change cover plate, a hot end connector support base plate and a hot end connector thermal interface material layer; one side of the hot end connector support base plate is connected to the heat source of the laser;

[0019] The hot end connector phase change cover plate and the hot end connector thermal interface material layer are connected to the other side of the hot end connector support bottom plate;

[0020] One end of the graphite-based thermal conductive belt is connected to the hot end connector thermal interface material layer and the hot end connector phase change cover plate.

[0021] Optionally, the phase change cover plate of the hot end connector is a phase change layer formed by a cavity reserved in the middle of the metal cover plate;

[0022] A first metal layer and a second metal layer are respectively bonded to two sides of the phase change layer;

[0023] The phase change layer is provided with an injection port which is connected with the cavity and can be closed. The cavity is filled with a heat-conducting filler to form a heat-conducting filling structure.

[0024] Optionally, the phase change layer, the first metal layer and the second metal layer are made of a metal material processed in one piece; the metal material is pure aluminum or pure copper or an alloy material thereof.

[0025] Optionally, the cavity is filled with phase change material and / or high thermal conductivity foam material as a thermal conductive filler.

[0026] Optionally, the phase change material may be an inorganic phase change material or an organic phase change material.

[0027] Optionally, the high thermal conductivity foam material is one of foam nickel, foam aluminum, foam copper, and foam carbon.

[0028] Optionally, the inorganic phase change material is one of crystalline hydrated salts, molten salts, metals or alloys.

[0029] Optionally, the organic phase change material may be paraffin or acetic acid.

[0030] Optionally, the cold end connector comprises a cold end connector cover plate, a cold end connector support plate and a cold end connector thermal interface material layer; and the cold end connector cover plate and the cold end connector support plate are made of pure metal or alloy;

[0031] One side of the cold end connector cover is connected to the heat dissipation component;

[0032] The cold end connector support plate and the cold end connector thermal interface material layer are connected to the other side of the cold end connector cover plate;

[0033] The other end of the graphite-based thermal conductive tape is connected to the cold end connector support plate and the cold end connector thermal interface material layer.

[0034] The utility model has at least the following advantages or beneficial effects:

[0035] The hot-end phase change connector is connected to the heat source of the laser; the cold-end connector is connected to the heat dissipation component; the hot-end phase change connector and the cold-end connector are connected by a flexible graphite-based heat-conducting belt; a thermal interface material layer is also provided between the hot-end phase change connector and the heat source, and / or between the cold-end connector and the heat dissipation component. The instantaneous heat of the heat source is quickly absorbed by the phase change material, and the absorbed heat is discharged in time by the highly thermally conductive graphite-based heat-conducting belt, forming a passive heat storage and heat transfer device, which gives full play to the advantages of both phase change materials and heat-conducting belts, and solves the problem of intermittent large-scale heat transfer in laser weapons. In addition, the heat-conducting belt is highly flexible and can be installed and used even in a small space, solving the problem of local overheating in a small space area that the existing technology cannot achieve. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic structural diagram of a high-power heat sink for a laser device provided in one embodiment of the utility model;

[0038] Figure 2 A schematic diagram of the structure of a hot-end phase change connector for a high-power heat sink of a laser device provided in one embodiment of the utility model;

[0039] Figure 3 A schematic diagram of a phase change cover structure of a hot end connector of a high-power heat sink for a laser device provided in one embodiment of the utility model;

[0040] Figure 4 A schematic diagram of the structure of a cold end connector of a high-power heat sink for a laser device provided in one embodiment of the utility model.

[0041] In the attached drawings: 1. hot-end phase change connector; 2. cold-end connector; 3. graphite-based thermal conductive tape; 4. thermal interface material layer; 5. heat dissipation component; 6. heat source; 101. hot-end connector support base plate; 102. hot-end connector phase change cover plate; 103. hot-end connector thermal interface material layer; 201. cold-end connector cover plate; 202. cold-end connector support plate; 203. cold-end connector thermal interface material layer; 1021. first metal layer; 1022. phase change layer; 1023. second metal layer; 1024. injection port. DETAILED DESCRIPTION

[0042] In order to make the objectives, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example 1

[0044] Please refer to Figure 1As shown, a high-power heat sink for laser devices provided in this embodiment includes: a hot-end phase change connector 1 connected to a heat source 6 of a laser; a cold-end connector 2 connected to a heat dissipation component 5; the hot-end phase change connector 1 and the cold-end connector 2 are connected via a flexible graphite-based thermal conductive belt 3; a thermal interface material layer 4 is also provided between the hot-end phase change connector 1 and the heat source 6, and / or between the cold-end connector 2 and the heat dissipation component 5.

[0045] In the embodiment of the present application, the above-mentioned high-power heat sink for laser devices uses phase change materials to quickly absorb the instantaneous heat of the heat source, and uses the high thermal conductivity graphite-based thermal conductive belt 3 to discharge the absorbed heat in time, forming a passive heat storage and heat transfer device, which gives full play to the advantages of both phase change materials and thermal conductive belts, and solves the problem of intermittent large-scale heat transfer in laser equipment; and the thermal conductive belt is highly flexible and can be installed and used even in a small space, which solves the problem that the prior art cannot locally overheat in a small area. The above-mentioned high-power heat sink for laser devices can effectively connect the heat source 6 of the laser device with the heat dissipation component 5 through the combination of the hot-end phase change connector 1 and the cold-end connector 2 to achieve heat conduction and heat dissipation. Its graphite-based thermal conductive belt 3 has good thermal conductivity and can effectively conduct heat. Due to its flexible characteristics, it can adapt to connections of different shapes, reduce the space requirements during installation, and make it more flexible; due to the presence of the thermal interface material layer 4, it can fill the tiny gaps at the thermal contact interface, improve the heat conduction efficiency, and reduce the thermal resistance, thereby better achieving the heat dissipation effect; the high-power heat sink of the present application has a reasonable overall design and can cope with the high heat generated by high-power laser devices, thereby ensuring the stable operation and reliability of the laser devices; it has efficient heat dissipation performance, good thermal conductivity characteristics and stable working ability, and is suitable for the heat dissipation needs of high-power laser devices.

[0046] Example 2

[0047] A high-power heat sink for laser devices, wherein the graphite-based thermal conductive belt 3 can be an artificial graphite film, a natural graphite film, or a graphene film, and is made by stacking multiple layers. When it is stacked by multiple layers, the artificial graphite film, the natural graphite film, and the graphene film can be arbitrarily combined to form a stacked layer structure, or a single type can be stacked to form a stacked layer structure, or other types of graphite films can be stacked; in addition, the above-mentioned graphite-based thermal conductive belt 3 can also be woven by carbon-based fibers.

[0048] In this embodiment, the above-mentioned graphite-based thermal conductive belt 3 is made of a multi-layer stacking combination of graphite-based material films or a braiding of carbon-based fibers, so that it has excellent thermal conductivity and has a higher thermal conductivity than traditional graphite-based thermal conductive belts, which can conduct heat more effectively and improve heat dissipation efficiency; the graphite-based thermal conductive belt made of a multi-layer stacking combination of graphite-based material films or a braiding of carbon-based fibers has good flexibility, can adapt to connection interfaces of different shapes and sizes, and provide better contact area and contact quality, thereby improving heat conduction efficiency; the above-mentioned multi-layer stacking combination of graphite-based material films or the braiding of carbon-based fibers can significantly improve the thermal conductivity, flexible adaptability and heat dissipation efficiency of the radiator, while reducing weight and thickness.

[0049] As a preferred embodiment, the graphite-based heat-conducting belt 3 is provided with multiple layers, and the interfaces between the multiple layers are filled with thermal grease and / or thermal gel, or connected by brazing. The multiple layers of graphite-based heat-conducting belt 3 provide a stronger heat conduction channel and stronger flexibility; by filling with thermal grease and / or thermal gel to form a filling layer, the graphite-based heat-conducting belts 3 can be fully in contact with each other to ensure the uniformity of heat conduction; by brazing, the base material does not need to be dissolved, so that the graphite-based heat-conducting belt 3 material can maintain the original performance and organizational structure, and because the brazing filling material itself has good fluidity, it can fill the gaps at the connection, thereby improving the sealing performance of the connection; in addition, the brazing filling material usually has good corrosion resistance and can improve the corrosion resistance of the connection part.

[0050] As a preferred embodiment, the graphite has a relatively high thermal conductivity, and using it as a transition layer can effectively improve the thermal conductivity. A transition layer can also be provided between the graphite-based thermal conductive belts 3, and the transition layer is titanium carbide; since titanium carbide has the ability to promote the transfer of heat between different layers, the thermal conductivity of the entire thermal conductive belt can be improved, the heat transfer efficiency can be improved, and the interface thermal resistance can be reduced; it also has good bonding properties, and can effectively connect multiple layers of graphite-based thermal conductive belts 3, enhance their structural strength and stability, help prevent detachment and loosening between layers, improve the durability and reliability of the thermal conductive belt, enhance the connection strength and improve the anti-oxidation performance.

[0051] It should be noted that the interface thermal resistance refers to the heat conduction resistance between two adjacent materials. By introducing titanium carbide as a transition layer between the graphite-based thermal conductive belt 3, the interface thermal resistance can be reduced, making it easier for heat to transfer from one layer to another, thereby improving the overall heat conduction effect.

[0052] As a preferred implementation manner, the hot-end phase change connector 1 and the heat source 6, as well as the cold-end connector 2 and the heat dissipation component 5, are fixedly connected by screws and nuts.

[0053] As an example, the above-mentioned laser heat source 6 is connected to the hot-end phase change connector 1, and the cold-end connector 2 is connected to the heat dissipation fins, and a layer of thermal interface material layer 4 is added between them; and they are connected in series by screws and nuts, so that heat is quickly transferred to the connector; the simple screw and nut connection is not only firm and stable, but also low-cost and easy to operate.

[0054] As a preferred implementation method, Figure 1 As shown, the heat dissipation component 5 is a heat dissipation shell or a heat dissipation fin; the cold end connector 2 is connected to the heat dissipation shell or the heat dissipation fin, or the cold end connector 2 is connected to the heat dissipation shell, and the heat dissipation shell is connected to the heat dissipation fin. In the present application, it is preferred to use the method of connecting the heat dissipation shell to the heat dissipation fin, which can increase the heat dissipation area, thereby further improving the heat dissipation efficiency.

[0055] Example 3

[0056] A high-power heat sink for laser devices, wherein the thermal interface material layer 4 can be one layer, or two layers or more than two layers; wherein, when there are more than two layers, each layer can be made of the same material or different materials; wherein each layer of the thermal interface material layer 4 can be one of thermal grease, thermal gel, thermal pad, indium sheet, and graphite-based thermal pad.

[0057] As a preferred implementation method, refer to Figure 2 As shown, the hot end phase change connector 1 includes: a hot end connector phase change cover plate 102, a hot end connector supporting base plate 101 and a hot end connector thermal interface material layer 103; one side of the hot end connector supporting base plate 101 is connected to the heat source 6 of the laser; the hot end connector phase change cover plate 102 and the hot end connector thermal interface material layer 103 are connected to the other side of the hot end connector supporting base plate 101; one end of the graphite-based thermal conductive belt 3 is connected to the hot end connector thermal interface material layer 103 and the hot end connector phase change cover plate 102.

[0058] As a preferred implementation method, refer to Figure 3 As shown, the hot end connector phase change cover plate 102 comprises a phase change layer 1022 formed by a cavity reserved in the middle of the metal cover plate; a first metal layer 1021 and a second metal layer 1023 are respectively bonded on both sides of the phase change layer 1022; the phase change layer 1022 has an injection port 1024 connected to the cavity and can be closed, and the cavity is filled with a heat-conductive filler to form a heat-conductive filling structure; the phase change layer 1022, the first metal layer 1021 and the second metal layer 1023 are made of metal materials in one piece; the metal material is pure aluminum or pure copper or an alloy thereof.

[0059] The cavity can be filled with phase change material or with high thermal conductivity foam material as a thermal conductive filler, or both can be filled at the same time to form a mixed filling structure; the phase change material can be an inorganic phase change material or an organic phase change material, wherein the inorganic phase change material is one of crystalline hydrated salts, molten salts, metals or alloys, and the organic phase change material can be paraffin or acetic acid or other organic matter; the high thermal conductivity foam material is one of foam nickel, foam aluminum, foam copper and foam carbon.

[0060] As an example, the hot end connector phase change cover plate 102 of the hot end phase change connector 1 is composed of a metal cover plate with a phase change layer 1022 reserved in the middle, and the upper and lower layers are metal layers, namely the first metal layer 1021 and the second metal layer 1023; the metal cover plate 1021 and the first metal layer 1021 and the second metal layer 1023 are all made of metal materials and are processed as one piece, wherein the metal material mainly refers to a metal material with high thermal conductivity, pure aluminum, pure copper or its alloy metal material; the interior of the phase change layer 1022 is a cavity filled with Some phase change materials and some high thermal conductivity foam materials, the above-mentioned high thermal conductivity foam materials include foam nickel, foam aluminum, foam copper, foam carbon, etc., wherein the phase change material is filled by injecting the phase change material through an injection port 1024; the above-mentioned injection port 1024 is then injected with the phase change material and sealed by laser welding; the above-mentioned phase change materials include inorganic phase change materials and organic phase change materials, wherein the inorganic phase change materials include crystalline hydrated salts, molten salts, metals or alloys, etc.; the organic phase change materials mainly include paraffin, acetic acid and other organic substances.

[0061] In a specific embodiment, a high-power device for laser devices includes a hot-end phase change connector 1, an intermediate flexible graphite-based heat-conducting belt 3 and a cold-end connector 2, wherein the hot-end phase change connector 1 is connected to a heat source 6 of a laser, and the cold-end connector 2 is connected to a heat dissipation fin or a heat dissipation housing; wherein the hot-end phase change connector 1 and the cold-end connector 2 are fixedly connected by inserting the intermediate graphite-based heat-conducting belt 3 into a fixing column thereof, and a thermal interface material, such as thermal conductive silicone grease, is added as a thermal interface material layer 4 at the interface between the hot-end phase change connector 1 or the cold-end connector 2 and the graphite-based heat-conducting belt 3;

[0062] Furthermore, the middle graphite-based heat conducting belt 3 is composed of multiple layers of artificial graphite films;

[0063] Furthermore, thermal conductive silicone grease is filled between the intermediate graphite-based heat-conducting belt 3 and the hot-end phase-change connector 1 as the hot-end connector thermal interface material layer 103, and thermal conductive silicone grease is filled at the interface between the intermediate graphite-based heat-conducting belt 3 and the cold-end connector 2 as the cold-end connector thermal interface material layer 203, and the thermal conductive silicone grease is applied to reduce thermal resistance; the laser heat source 6 is connected to the hot-end phase-change connector 1 and the cold-end connector 2 is connected to the heat sink fin 5, and a layer of thermal interface material is added between them; and fixed mounting holes are provided on the hot-end connector support base plate 101 and the cold-end connector cover plate 201, which can be connected in series by screws and nuts, thereby achieving rapid heat conduction to the connector.

[0064] The added layer of thermal interface material is preferably thermally conductive gel, that is, thermally conductive gel is added as the hot end connector thermal interface material layer 103 and the cold end connector thermal interface material layer 203 .

[0065] Furthermore, the hot end phase change connector 1 comprises a hot end connector support base plate 101, a hot end connector phase change cover plate 102 and a hot end connector thermal interface material layer 103; the hot end connector phase change cover plate 102 has a phase change layer 1022 reserved in the middle of the metal cover plate, and the upper and lower layers are metal layers, namely, a first metal layer 1021 and a second metal layer 1023; the metal cover plate 1021 and the first metal layer 1021 and the second metal layer 1023 are all made of metal materials and are integrally formed, wherein the metal The material mainly refers to a metal material with high thermal conductivity, preferably pure copper, or an alloy metal material thereof; the interior of the phase change layer 1022 is a cavity, which is filled with some phase change materials and some high thermal conductivity foam materials, wherein the high thermal conductivity foam materials include foam nickel, foam aluminum, foam copper, foam carbon, etc. The high thermal conductivity foam materials are preferably foam carbon, wherein the phase change material is filled by injecting paraffin through an injection port 1024; the injection port 1024 is then injected with the phase change material and sealed by laser welding.

[0066] The cold end connector 2 comprises a cold end connector cover plate 201, a cold end connector support plate 202 and a cold end connector thermal interface material layer 203; wherein the cold end connector cover plate 201 and the cold end connector support plate 202 are both made of pure copper metal material.

[0067] Example 4

[0068] Reference Figure 4As shown, an evaporator for defrosting a graphite-based heating plate, wherein the cold end connector 2 includes a cold end connector cover plate 201, a cold end connector support plate 202 and a cold end connector thermal interface material layer 203; and the cold end connector cover plate 201 and the cold end connector support plate 202 are made of pure metal or alloy; one side of the cold end connector cover plate 201 is connected to the heat dissipation component 5; the cold end connector support plate 202 and the cold end connector thermal interface material layer 203 are connected to the other side of the cold end connector cover plate 201; the other end of the graphite-based heat conductive belt 3 is connected to the cold end connector support plate 202 and the cold end connector thermal interface material layer 203.

[0069] It should be noted that, in the present application, the thermal interface material layer 4 , the hot end connector thermal interface material layer 103 , and the cold end connector thermal interface material layer 203 may be made of the same material or different materials.

[0070] In a specific embodiment, a high-power device for a laser device includes a hot-end phase change connector 1, an intermediate flexible graphite-based thermal conductor 3 and a cold-end connector 2, wherein the hot-end phase change connector 3 is connected to a heat source 6 of the laser, and the cold-end connector 2 is connected to a heat dissipation component 5. The heat dissipation component 5 can be a heat dissipation fin or a heat dissipation shell, or a combination of a heat dissipation shell and a heat dissipation fin.

[0071] The above-mentioned hot end phase change connector 1 and cold end connector 2 are fixedly connected to the middle graphite-based heat conducting belt sleeve 3 through a fixing column, and a thermal interface material is added as a thermal interface material layer 4 at the interface between the hot end phase change connector 1 and the graphite-based heat conducting belt 3 or between the cold end connector 2 and the graphite-based heat conducting belt 3. The middle graphite-based heat conducting belt 3 is composed of a multi-layer stack of graphene films; the interface between the graphite-based heat conducting belt 3 and the hot end phase change connector 1, and the interface between the graphite-based heat conducting belt 3 and the cold end connector 2 are formed by brazing titanium carbide as a thermal interface material layer 4 to reduce thermal resistance.

[0072] A layer of thermal interface material can be added as a thermal interface material layer 4 between the laser heat source 6 and the hot end phase change connector 1, and between the cold end connector 2 and the heat dissipation fin 5; and both the hot end connector support base plate 101 and the cold end connector cover plate 201 have fixed mounting holes, which can be connected in series by screws and nuts, so as to achieve rapid heat conduction to the connector; the added layer of thermal interface material layer 4 is a metal indium sheet.

[0073] The indium sheet is used as the thermal interface material layer 4, which has a high thermal conductivity and can effectively conduct heat, so that the indium sheet can achieve higher thermal conduction efficiency in thermal interface applications and improve heat dissipation performance; when the indium sheet is used as a thermal interface material, it can melt and fill tiny gaps at a relatively low temperature to ensure good contact and heat dissipation effects; in addition, indium has good corrosion resistance and can maintain stable performance under various environmental conditions, so that the indium sheet is still effective under long-term use and exposure to adverse environments.

[0074] Furthermore, the hot end phase change connector 1 comprises a hot end connector support base plate 101, a hot end connector phase change cover plate 102 and a hot end connector thermal interface material layer 103; the hot end connector phase change cover plate 102, the hot end connector phase change cover plate 102 is composed of a metal cover plate with a phase change layer 1022 reserved in the middle, and the upper and lower layers are metal layers, namely, a first metal layer 1021 and a second metal layer 1023; the metal cover plate 1021 and the first metal layer 1021 and the second metal layer 1023 are all made of metal materials and are processed as one piece. Forming, wherein the metal material mainly refers to a metal material with high thermal conductivity, preferably pure copper, or its alloy metal material; the interior of the phase change layer 1022 is a cavity, which is filled with some phase change materials and some high thermal conductivity foam materials, the high thermal conductivity foam materials include foam nickel, foam aluminum, foam copper, foam carbon, etc. The high thermal conductivity foam material is preferably foam carbon, wherein the phase change material is filled by injecting paraffin through an injection port 1024; the injection port 1024 is then injected with phase change material and sealed by laser welding.

[0075] It should be noted that, in the above embodiments, different thermal interface materials are used, and their service life is also different, and the service life of the two thermal interface materials is different; for example, in the specific embodiment of the above embodiment 3, the thermal interface material used in the thermal interface material layer 4 is thermal grease, and the thermal interface material of the hot end connector thermal interface material layer 103 and the cold end connector thermal interface material layer 203 is thermal conductive gel, and in the specific embodiment of embodiment 4, the thermal interface material used in the thermal interface material layer 4 is indium sheet, and the thermal interface material of the hot end connector thermal interface material layer 103 and the cold end connector thermal interface material layer 203 is titanium carbide formed by welding; by comparing the test life comparison data, the service life of embodiment 3 is 3 to 5 years, while the service life of embodiment 4 is 15 to 20 years.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0077] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0078] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0079] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0080] The high-power heat sink for laser devices provided by the present invention is introduced in detail above. The principle and implementation mode of the present invention are described in detail using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A high-power heat sink for laser devices, characterized in that: include: The hot-end phase-change connector (1) is connected to a laser heat source (6); the cold-end connector (2) is connected to a heat dissipation component (5); The hot-end phase-change connector (1) and the cold-end connector (2) are connected via a flexible graphite-based heat-conducting belt (3); A thermal interface material layer (4) is also provided between the hot end phase change connector (1) and the heat source (6), and / or between the cold end connector (2) and the heat dissipation component (5).

2. The high-power radiator according to claim 1, characterized in that: The graphite-based heat conducting belt (3) is an artificial graphite film or a natural graphite film or a graphene film, and the graphite-based heat conducting belt (3) is formed by stacking and combining multiple layers of graphite-based material films or by weaving carbon-based fibers.

3. The high-power radiator according to claim 1, characterized in that: The graphite-based heat-conducting belt (3) is provided with multiple layers, and the interfaces between the multiple layers are filled with heat-conducting silicone grease and / or heat-conducting gel, or are connected by brazing.

4. The high-power radiator according to claim 3, characterized in that: A transition layer may also be provided between the graphite-based thermal conductive belts (3), wherein the transition layer is titanium carbide.

5. The high-power radiator according to claim 1, characterized in that: The hot end phase change connector (1) and the heat source (6), as well as the cold end connector (2) and the heat dissipation component (5), are fixedly connected via screws and nuts.

6. The high-power radiator according to claim 1, characterized in that: The heat dissipation component (5) is a heat dissipation shell or a heat dissipation fin; The cold end connector (2) is connected to the heat dissipation housing or the heat dissipation fins, or the cold end connector (2) is connected to the heat dissipation housing, and the heat dissipation housing is connected to the heat dissipation fins.

7. The high-power radiator according to claim 1, characterized in that: The thermal interface material layer (4) is made of at least two layers of the same or different materials; Wherein, each layer of the thermal interface material (4) is one of thermal grease, thermal gel, thermal pad, indium sheet, and graphite-based thermal pad.

8. The high-power radiator according to claim 1, characterized in that: The hot end phase change connector (1) comprises: a hot end connector phase change cover plate (102), a hot end connector support base plate (101) and a hot end connector thermal interface material layer (103); one side of the hot end connector support base plate (101) is connected to the laser heat source (6); The hot end connector phase change cover plate (102) and the hot end connector thermal interface material layer (103) are connected to the other side of the hot end connector support base plate (101); One end of the graphite-based thermal conductive belt (3) is connected to the hot end connector thermal interface material layer (103) and the hot end connector phase change cover plate (102).

9. The high-power radiator according to claim 8, characterized in that: The phase change cover plate (102) of the hot end connector comprises a phase change layer (1022) formed by a cavity reserved in the middle of the metal cover plate; A first metal layer (1021) and a second metal layer (1023) are respectively laminated on both sides of the phase change layer (1022); The phase change layer (1022) is provided with an injection port (1024) which is connected to the cavity and can be closed. The cavity is filled with a heat-conducting filler to form a heat-conducting filling structure.

10. The high-power radiator according to claim 9, characterized in that: The phase change layer (1022), the first metal layer (1021) and the second metal layer (1023) are made of a metal material processed as a whole; the metal material is pure aluminum or pure copper or an alloy material thereof.

11. The high-power radiator according to claim 9, characterized in that: The cavity is filled with phase change material and / or high thermal conductivity foam material as thermal conductive filler.

12. The high-power radiator according to claim 11, characterized in that: The phase change material may be an inorganic phase change material or an organic phase change material.

13. The high-power radiator according to claim 11, characterized in that: The high thermal conductivity foam material is one of foam nickel, foam aluminum, foam copper and foam carbon.

14. The high-power radiator according to claim 12, characterized in that: The inorganic phase change material is one of crystalline hydrated salts, molten salts, metals or alloys.

15. The high-power radiator according to claim 12, characterized in that: The organic phase change material may be paraffin or acetic acid.

16. The high-power radiator according to claim 1, characterized in that: The cold end connector (2) comprises a cold end connector cover plate (201), a cold end connector support plate (202) and a cold end connector thermal interface material layer (203); and the cold end connector cover plate (201) and the cold end connector support plate (202) are made of pure metal or alloy; One side of the cold end connector cover plate (201) is connected to the heat dissipation component (5); The cold end connector support plate (202) and the cold end connector thermal interface material layer (203) are connected to the other side of the cold end connector cover plate (201); The other end of the graphite-based thermal conductive belt (3) is connected to the cold end connector support plate (202) and the cold end connector thermal interface material layer (203).

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