WO2016206374A1 - 蜂窝金属散热器及其加工工艺 - Google Patents

蜂窝金属散热器及其加工工艺 Download PDF

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Publication number
WO2016206374A1
WO2016206374A1 PCT/CN2016/071703 CN2016071703W WO2016206374A1 WO 2016206374 A1 WO2016206374 A1 WO 2016206374A1 CN 2016071703 W CN2016071703 W CN 2016071703W WO 2016206374 A1 WO2016206374 A1 WO 2016206374A1
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honeycomb
metal
heat sink
honeycomb metal
hole
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PCT/CN2016/071703
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English (en)
French (fr)
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孔星
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广东明路电力电子有限公司
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Publication of WO2016206374A1 publication Critical patent/WO2016206374A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources

Definitions

  • the invention relates to a heat sink, in particular to a honeycomb metal heat sink and a processing technique thereof.
  • the conventional heat sink is generally an aluminum block 6 with heat radiating fins 61.
  • the heat radiating fins should not be too thin (about 1 mm or more).
  • sufficient space is required to be dissipated between the heat dissipating fins 61 and the heat dissipating fins 61. Therefore, under various restrictions, the number of heat dissipating fins is small, so that the heat dissipating area is reduced, which affects the heat dissipating effect.
  • this The radiator has high cost and high quality.
  • the object of the present invention is to provide a honeycomb metal heat sink with simple structure, reasonable cost, low cost, light weight, wide heat dissipation area and good heat dissipation effect and a processing technique thereof.
  • a honeycomb metal heat sink comprising a honeycomb metal made of a metal foil and having a plurality of honeycomb holes on a surface thereof, the side surface of the honeycomb metal comprising a honeycomb hole surface at the front and rear ends and an outer peripheral surface between the honeycomb hole faces, the honeycomb hole
  • the honeycomb front surface is formed on the front and rear ends of the honeycomb metal
  • the honeycomb metal surface is formed on at least one side of the honeycomb metal.
  • the metal substrate is a copper plate or an aluminum plate, and the copper plate or the aluminum plate is welded and fixed to at least one honeycomb hole surface of the honeycomb metal.
  • the copper or aluminum plate is radial, the intersection of which is formed as a power component mounting surface, and the outer end extends to the edge of the honeycomb metal.
  • the copper plate or the aluminum plate is provided with heat dissipating teeth on the outer surface facing away from the honeycomb hole surface.
  • the metal honeycomb body is directly welded to the front and rear honeycomb surfaces of the honeycomb metal, and the phase change material layer is disposed in the honeycomb hole sealed by the metal matrix.
  • PCM Phase Change Material
  • Phase Change Material refers to a substance that changes its physical properties with temperature and provides latent heat. The process of transforming physical properties is called a phase change process. At this time, the phase change material will absorb or release a large amount. The latent heat, which further reduces the heat of the resistive material layer.
  • At least one side of the honeycomb metal surface of the honeycomb metal is provided with a groove in a range corresponding to the metal substrate, and the groove penetrates the honeycomb hole covered by the metal substrate, so that the phase change material in the honeycomb hole flows in the longitudinal direction of the honeycomb hole.
  • the lateral flow of the phase change material in each honeycomb hole can also be realized through the groove, thereby further improving the heat dissipation effect of the heat exchange.
  • the metal substrate is a metal heat sink block, and at least one side of the metal heat sink block is welded to the honeycomb hole surface of the honeycomb metal, and the metal heat sink block is provided with heat dissipating fins on at least one other side.
  • the metal substrate is a metal heat dissipating block
  • the surface of the metal heat dissipating block is provided with heat dissipating fins
  • the honeycomb metal is disposed on the channel between the heat dissipating fins
  • the honeycomb hole of the honeycomb metal is aligned with the channel
  • the surface of the honeycomb metal is welded to the surface of the channel between the outer peripheral surface and the heat dissipating fin.
  • the surface of the metal substrate welded to the honeycomb metal is a frosted surface to improve the adhesion ability during welding.
  • the processing technology of the honeycomb metal heat sink is characterized in that: the metal substrate is placed on the surface of the honeycomb metal, and then the metal powder spraying process is used to weld the edge of the contact between the metal substrate and the honeycomb metal surface by spraying metal powder; when the metal substrate is When one end of the honeycomb metal is welded to the honeycomb hole surface and the other end of the honeycomb hole surface is not connected to the covering, the other end honeycomb hole surface is passed through the honeycomb hole to the metal substrate and the honeycomb metal contact portion to be sprayed with metal powder for welding.
  • This honeycomb metal heat sink is a combination of honeycomb metal as an important heat sink, because the thickness of the material (metal foil) made of honeycomb metal is generally between 0.02 mm and 0.2 mm, and the strength in the axial direction is high. Honeycomb structure, so compared with the traditional heat sink fin aluminum block heatsink, the honeycomb metal heat sink has better heat dissipation and larger heat dissipation area under the same material quality, and the cost is lower. ;
  • the honeycomb metal heat sink is composed of a honeycomb metal and a metal substrate, and the metal substrate may be an aluminum plate, a copper plate or a metal heat sink, and the welding is performed by a metal powder spraying process;
  • the honeycomb metal of the honeycomb metal heat sink can be provided with a metal substrate facing the honeycomb holes at the front and rear ends, and the phase change material is encapsulated in a honeycomb hole surrounded by the metal substrate to cool down through the phase of the material.
  • the metal base at the bottom can improve the mounting surface of the honeycomb metal, and a gap is formed between the honeycomb metal and the mounting surface to facilitate air flow and improve heat dissipation efficiency.
  • Figure 1 is a schematic view showing the structure of a first embodiment of the present invention.
  • FIG. 2 is a schematic view showing another angle structure of FIG. 1.
  • FIG. 2 is a schematic view showing another angle structure of FIG. 1.
  • FIG. 3 is a schematic plan view of the top view of FIG. 2.
  • FIG. 4 is a schematic structural view of the top view and the use state of FIG. 3.
  • Figure 5 is a schematic view showing the structure of another embodiment of the first embodiment of the present invention.
  • Figure 6 is a schematic view of another angle structure of Figure 5.
  • Figure 7 is a schematic view showing the structure of a second embodiment of the present invention.
  • Figure 8 is a schematic view showing the structure of a third embodiment of the present invention.
  • Figure 9 is a schematic view showing the structure of a fourth embodiment of the present invention.
  • Figure 10 is a schematic view showing the structure of the prior art.
  • a honeycomb metal heat sink comprising a honeycomb metal 1 made of a metal foil and having a plurality of honeycomb holes on its surface, the side of the honeycomb metal 1 including cells at the front and rear ends
  • the metal substrate is welded to the side, and the honeycomb metal 1 and the metal substrate together form a honeycomb metal heat sink.
  • the metal substrate is a copper plate or an aluminum plate 2, and the front and rear honeycomb surface 11 of the honeycomb metal 1 are respectively welded with a copper plate or an aluminum plate 2, and a phase change material layer is disposed in the honeycomb hole blocked by the copper plate or the aluminum plate 2 ( Not shown in the figure).
  • the copper or aluminum plate 2 at the bottom can improve the mounting surface of the honeycomb metal 1, and a gap D is formed between the honeycomb metal 1 and the mounting surface (see FIG. 4), which facilitates air flow and improves heat dissipation efficiency. .
  • the copper or aluminum plate 2 is radially, the intersection of which is formed as a power component mounting surface 21, and the outer end extends to the edge of the honeycomb metal 1.
  • the honeycomb metal heat sink in FIG. 1 is mainly used for an audio or the like, the honeycomb metal 1 has a rectangular shape, and the IGBT chip 3 is disposed on the power component mounting surface 21.
  • the surface on which the copper or aluminum plate 2 is welded to the honeycomb metal 1 is a frosted surface.
  • the honeycomb surface 1 of the honeycomb metal 1 is provided with a groove 13 in the range corresponding to the metal substrate (shown by broken lines in FIGS. 2 and 4), and the groove 13 is made of metal.
  • the honeycomb hole covered by the base body penetrates.
  • the honeycomb metal heat sink is mainly used for a high-power LED lamp, the honeycomb metal 1 is circular, and the LED chip 4 is disposed on the power component mounting surface 21.
  • the honeycomb metal 1 is preferably honeycomb aluminum.
  • the second embodiment is different from the first embodiment in that, as shown in FIG. 7, the outer surface of the copper plate or the aluminum plate 2 facing away from the honeycomb hole surface 11 is provided with heat dissipating teeth 22 to further enhance the heat dissipation effect.
  • the third embodiment is different from the first embodiment in that, as shown in FIG. 8, the metal substrate is a metal heat sink block 5, and one side of the metal heat sink block 5 is soldered to a honeycomb hole surface 11 of the honeycomb metal 1, and the metal heat sink is used.
  • the block 5 is provided with heat dissipating fins 51 on at least one other side.
  • the fourth embodiment is different from the first embodiment in that, as shown in FIG. 9, the metal substrate is a metal heat dissipation.
  • Block 5 the surface of the metal heat sink block 5 is provided with heat dissipating fins 51, the honeycomb metal 1 is disposed on the channel between the heat dissipating fins 51, and the honeycomb holes of the honeycomb metal 1 are aligned with the channel, and the outer peripheral surface 12 of the honeycomb metal 1 and the heat dissipating fins The channel surfaces are welded between the sheets 51.
  • a processing method of a honeycomb metal heat sink the metal substrate is placed on the surface of the honeycomb metal 1, and then the metal powder spraying process is used to weld the metal substrate to the edge of the surface of the honeycomb metal 1 by spraying metal powder; when the metal substrate and the honeycomb metal When one end of the honeycomb hole surface 11 is welded and the other end honeycomb hole surface 11 is not connected to the cover, the other end honeycomb hole surface 11 is passed through the honeycomb hole to the metal substrate to be contacted with the honeycomb metal 1 by spray metal powder welding.
  • the surface on which the metal substrate is welded to the honeycomb metal 1 is a frosted surface.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

一种蜂窝金属散热器及其加工工艺，蜂窝金属散热器包括由金属箔片制成、并且表面设有若干蜂窝孔的蜂窝金属（1），蜂窝金属（1）的侧面包括前后两端的蜂窝孔面（11）和位于蜂窝孔面（11）之间的外周面（12），蜂窝孔贯穿蜂窝金属（1）的前后两端，使蜂窝金属（1）的前后两端形成所述蜂窝孔面（11），所述蜂窝金属（1）至少一侧面焊接有金属基体，蜂窝金属（1）与金属基体共同构成蜂窝金属散热器。与传统的带散热翅片铝块散热器相比，在同等材料质量的情况下，蜂窝金属散热器具有更好的散热效果和更大的散热面积，成本也更低。

Description

蜂窝金属散热器及其加工工艺 技术领域
本发明涉及一种散热器，特别是一种蜂窝金属散热器及其加工工艺。
背景技术
参见图10所示，现有的散热器一般为带有散热翅片61的铝块6，为了保证散热翅片61的刚度，散热翅片不能太薄(约在1mm以上)。同时，也要在散热翅片61与散热翅片61之间保持足够的空间散热，所以，在多种限制下，导致散热翅片数量较小，以致散热面积减少，影响散热效果，而且，这种散热器成本高、质量重。
发明内容
本发明的目的在于提供一种结构简单、合理，成本低、质量轻、散热面积广、散热效果好的蜂窝金属散热器及其加工工艺。
本发明的目的是这样实现的：
一种蜂窝金属散热器，包括由金属箔片制成、并且表面设有若干蜂窝孔的蜂窝金属，蜂窝金属的侧面包括前后两端的蜂窝孔面和位于蜂窝孔面之间的外周面，蜂窝孔贯穿蜂窝金属的前后两端，使蜂窝金属的前后两端形成所述蜂窝孔面，其特征在于：所述蜂窝金属至少一侧面焊接有金属基体，蜂窝金属与金属基体共同构成蜂窝金属散热器。
本发明的目的还可以采用以下技术措施解决：
作为更具体的第一种方案，所述金属基体为铜板或铝板，铜板或铝板与蜂窝金属的至少一蜂窝孔面焊接固定。
所述铜板或铝板呈放射状，其交汇处形成为功率元件安装面，外端延伸至蜂窝金属边缘处。
作为更具体的第二种方案，所述铜板或铝板背向蜂窝孔面的外表面设有散热齿。
作为更具体的第三种方案，所述蜂窝金属的前后两蜂窝孔面上分别正对焊接有金属基体，金属基体封堵的蜂窝孔内设有相变材料层。PCM(Phase Change Material，即相变材料)，是指随温度变化而改变物理性质并能提供潜热的物质，其转变物理性质的过程称为相变过程，这时相变材料将吸收或释放大量的潜热，从而进一步降低电阻材料层的热量。
所述蜂窝金属的至少一侧蜂窝孔面对应金属基体的范围内设有凹槽，凹槽将金属基体所遮盖的蜂窝孔贯通，使得蜂窝孔内的相变材料除了沿蜂窝孔纵向流动外，还可以通过凹槽实现各个蜂窝孔中的相变材料横向流动，进一步提升换热散热效果。
作为更具体的第四种方案，所述金属基体为金属散热块，金属散热块至少一侧与蜂窝金属的蜂窝孔面焊接，金属散热块至少另外一侧设有散热翅片。
作为更具体的第五种方案，所述金属基体为金属散热块，金属散热块表面设有散热翅片，蜂窝金属设置在散热翅片之间通道上、且蜂窝金属的蜂窝孔与通道指向一致，蜂窝金属外周面与散热翅片之间通道表面焊接。
作为更具佳的方案，所述金属基体与蜂窝金属焊接的面为磨砂面，以提高焊接时的附着能力。
一种蜂窝金属散热器的加工工艺，其特征在于：将金属基体放置在蜂窝金属表面，然后采用金属粉末喷涂工艺对金属基体与蜂窝金属表面接触的边缘进行喷涂金属粉焊接固定；当金属基体与蜂窝金属的一端蜂窝孔面焊接、并且另一端蜂窝孔面未连接遮盖物时，从另一端蜂窝孔面透过蜂窝孔向金属基体与蜂窝金属接触处进行喷涂金属粉焊接固定。
本发明的有益效果如下：
(1)此款蜂窝金属散热器集合了蜂窝金属作为重要的散热体，由于制成蜂窝金属的材料(金属箔片)厚度一般在0.02mm至0.2mm之间、并且围成轴线方向强度较高的蜂窝结构，所以与传统的带散热翅片铝块散热器相比，在同等材料质量的情况下，蜂窝金属散热器具有更好的散热效果和更大的散热面积，而且，成本也更低；
(2)此款蜂窝金属散热器由蜂窝金属和金属基体构成，金属基体可以是铝板、铜板或者金属散热块，他们之间通过金属粉末喷涂工艺实现焊接；
(3)此款蜂窝金属散热器的蜂窝金属可以前后两端蜂窝孔面正对设置金属基体，并且，将相变材料封装在被金属基体围闭的蜂窝孔内，实现通过物质相态来降温；而且，双面设置有金属基体后，底部的金属基体可以将蜂窝金属的安装面提高，蜂窝金属与安装面之间形成间隙，利于空气流动，提高散热效率。
附图说明
图1为本发明第一实施例结构示意图。
图2为图1另一角度结构示意图。
图3为图2的俯视结构示意图。
图4为图3的俯视及使用状态结构示意图。
图5为本发明第一实施例另一实施方案结构示意图。
图6为图5另一角度结构示意图。
图7为本发明第二实施例结构示意图。
图8为本发明第三实施例结构示意图。
图9为本发明第四实施例结构示意图。
图10为现有技术结构示意图。
具体实施方式
下面结合附图及实施例对本发明作进一步描述。
实施例一，参见图1和图2所示，一种蜂窝金属散热器，包括由金属箔片制成、并且表面设有若干蜂窝孔的蜂窝金属1，蜂窝金属1的侧面包括前后两端的蜂窝孔面11和位于蜂窝孔面11之间的外周面12，蜂窝孔贯穿蜂窝金属1的前后两端，使蜂窝金属1的前后两端形成所述蜂窝孔面11，所述蜂窝金属1至少一侧面焊接有金属基体，蜂窝金属1与金属基体共同构成蜂窝金属散热器。
所述金属基体为铜板或铝板2，所述蜂窝金属1的前后两蜂窝孔面11上分别正对焊接有铜板或铝板2，铜板或铝板2封堵的蜂窝孔内设有相变材料层(图中未示出)。当蜂窝金属散热器安装后，底部的铜板或铝板2可以将蜂窝金属1的安装面提高，蜂窝金属1与安装面之间形成间隙D(见图4所示)，利于空气流动，提高散热效率。
所述铜板或铝板2呈放射状，其交汇处形成为功率元件安装面21，外端延伸至蜂窝金属1边缘处。其中图1中蜂窝金属散热器主要用于音响等场合，蜂窝金属1呈长方形，功率元件安装面21上设置有IGBT芯片3。
作为更优的方案，所述铜板或铝板2与蜂窝金属1焊接的面为磨砂面。
结合图3和图4所示，所述蜂窝金属1的两侧蜂窝孔面11对应金属基体的范围内设有凹槽13(见图2和图4中虚线所示)，凹槽13将金属基体所遮盖的蜂窝孔贯通。
参见图5和图6，其蜂窝金属散热器主要用于大功率LED灯上，蜂窝金属1呈圆形，功率元件安装面21上设置有LED芯片4。
按照目前技术成熟度、成本、散热性能等综合考虑，所述蜂窝金属1优选是蜂窝铝。
实施例二，与实施例一的不同之处在于：参见图7所示，所述铜板或铝板2背向蜂窝孔面11的外表面设有散热齿22，以进一步加强散热效果。
实施例三，与实施例一的不同之处在于：参见图8所示，所述金属基体为金属散热块5，金属散热块5一侧与蜂窝金属1的一蜂窝孔面11焊接，金属散热块5至少另外一侧设有散热翅片51。
实施例四，与实施例一的不同之处在于：参见图9所示，所述金属基体为金属散热 块5，金属散热块5表面设有散热翅片51，蜂窝金属1设置在散热翅片51之间通道上、且蜂窝金属1的蜂窝孔与通道指向一致，蜂窝金属1外周面12与散热翅片51之间通道表面焊接。
一种蜂窝金属散热器的加工工艺，将金属基体放置在蜂窝金属1表面，然后采用金属粉末喷涂工艺对金属基体与蜂窝金属1表面接触的边缘进行喷涂金属粉焊接固定；当金属基体与蜂窝金属1的一端蜂窝孔面11焊接、并且另一端蜂窝孔面11未连接遮盖物时，从另一端蜂窝孔面11透过蜂窝孔向金属基体与蜂窝金属1接触处进行喷涂金属粉焊接固定。
所述金属基体与蜂窝金属1焊接的面为磨砂面。

Claims (10)

  1. 一种蜂窝金属散热器，包括由金属箔片制成、并且表面设有若干蜂窝孔的蜂窝金属(1)，蜂窝金属(1)的侧面包括前后两端的蜂窝孔面(11)和位于蜂窝孔面(11)之间的外周面(12)，蜂窝孔贯穿蜂窝金属(1)的前后两端，使蜂窝金属(1)的前后两端形成所述蜂窝孔面(11)，其特征在于：所述蜂窝金属(1)至少一侧面焊接有金属基体，蜂窝金属(1)与金属基体共同构成蜂窝金属散热器。
  2. 根据权利要求1所述蜂窝金属散热器，其特征在于：所述金属基体为铜板或铝板(2)，铜板或铝板(2)与蜂窝金属(1)的至少一蜂窝孔面(11)焊接固定。
  3. 根据权利要求2所述蜂窝金属散热器，其特征在于：所述铜板或铝板(2)背向蜂窝孔面(11)的外表面设有散热齿(22)。
  4. 根据权利要求2所述蜂窝金属散热器，其特征在于：所述铜板或铝板(2)呈放射状，其交汇处形成为功率元件安装面(21)，外端延伸至蜂窝金属(1)边缘处。
  5. 根据权利要求1所述蜂窝金属散热器，其特征在于：所述蜂窝金属(1)的前后两蜂窝孔面(11)上分别正对焊接有金属基体，金属基体封堵的蜂窝孔内设有相变材料层。
  6. 根据权利要求5所述蜂窝金属散热器，其特征在于：所述蜂窝金属(1)的至少一侧蜂窝孔面(11)对应金属基体的范围内设有凹槽(13)，凹槽(13)将金属基体所遮盖的蜂窝孔贯通。
  7. 根据权利要求1所述蜂窝金属散热器，其特征在于：所述金属基体为金属散热块(5)，金属散热块(5)至少一侧与蜂窝金属(1)的蜂窝孔面(11)焊接，金属散热块(5)至少另外一侧设有散热翅片(51)。
  8. 根据权利要求1所述蜂窝金属散热器，其特征在于：所述金属基体为金属散热块(5)，金属散热块(5)表面设有散热翅片(51)，蜂窝金属(1)设置在散热翅片(51)之间通道上、且蜂窝金属(1)的蜂窝孔与通道指向一致，蜂窝金属(1)外周面(12)与散热翅片(51)之间通道表面焊接。
  9. 根据权利要求1所述蜂窝金属散热器，其特征在于：所述金属基体与蜂窝金属(1)焊接的面为磨砂面。
  10. 一种根据权利要求1所述蜂窝金属散热器的加工工艺，其特征在于：将金属基体放置在蜂窝金属(1)表面，然后采用金属粉末喷涂工艺对金属基体与蜂窝金属(1)表面接触的边缘进行喷涂金属粉焊接固定；当金属基体与蜂窝金属(1)的一端蜂窝孔面(11)焊接、并且另一端蜂窝孔面(11)未连接遮盖物时，从另一端蜂窝孔面(11)透过蜂窝孔向金属基体与蜂窝金属(1)接触处进行喷涂金属粉焊接固定。
PCT/CN2016/071703 2015-06-22 2016-01-22 蜂窝金属散热器及其加工工艺 WO2016206374A1 (zh)

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CN110662406A (zh) * 2019-11-04 2020-01-07 深圳航天东方红海特卫星有限公司 一种相变换热装置

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