WO2016095507A1 - 一种散热装置、电路板及终端 - Google Patents

一种散热装置、电路板及终端 Download PDF

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Publication number
WO2016095507A1
WO2016095507A1 PCT/CN2015/083781 CN2015083781W WO2016095507A1 WO 2016095507 A1 WO2016095507 A1 WO 2016095507A1 CN 2015083781 W CN2015083781 W CN 2015083781W WO 2016095507 A1 WO2016095507 A1 WO 2016095507A1
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heat
circuit board
heat dissipation
generating device
terminal
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PCT/CN2015/083781
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English (en)
French (fr)
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周末
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中兴通讯股份有限公司
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Publication of WO2016095507A1 publication Critical patent/WO2016095507A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
    • H01L23/427—Cooling by change of state, e.g. use of heat pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the utility model relates to the field of communication devices, in particular to a heat dissipation device, a circuit board and a terminal.
  • the prior art In order to solve the problem of heat dissipation of the mobile terminal, the prior art generally uses a heat dissipating material such as graphite, foam, silica gel, etc., and the heat generated by the heating device of the mobile terminal is transferred from a place with a high temperature to a place with a low temperature, so that the heat is evenly distributed. Above the mobile terminal, the heat is dissipated into the air through the mobile terminal casing to achieve the purpose of heat dissipation.
  • a heat dissipating material such as graphite, foam, silica gel, etc.
  • the space inside the mobile terminal is generally small, and the addition of a large area of heat dissipating material is not easy to implement, and the heat dissipation effect is not good.
  • the embodiments of the present invention are expected to provide a heat dissipating device, a circuit board, and a terminal, which improve the heat dissipating effect of the terminal without additionally adding heat dissipating material.
  • an embodiment of the present invention provides a heat dissipating device, which is applied to a circuit board, the heat dissipating device includes: a heat dissipating tube and a shielding cover, wherein the heat dissipating tube is fixed on the circuit board and surrounds the a heat generating device on the circuit board; the shield cover covers the heat pipe;
  • the heat pipe is a pipe body which is completely enclosed and has a vacuum cavity formed therein.
  • the inner wall of the pipe is provided with a liquid absorbing core, and the liquid absorbing core is adsorbed with a liquid for transferring heat.
  • the heat pipe is made of metal.
  • the heat pipe is welded to the circuit board.
  • the gap between the shield cover and the upper surface of the heat generating device is filled with a heat dissipating material having a shape identical to the shape of the upper surface of the heat generating device.
  • the heat dissipating material comprises a thermally conductive silicone.
  • the upper surface of the shield case is provided with at least one convex block for transferring heat.
  • the embodiment of the present invention provides a circuit board, wherein the circuit board is provided with the heat dissipation device according to any one of the above at least one of the first aspects.
  • an embodiment of the present invention provides a terminal, where the terminal includes the circuit board of the second aspect.
  • the embodiment of the present invention provides a heat dissipating device, a circuit board and a terminal.
  • the heat dissipating device comprises: a heat dissipating tube and a shielding cover, and the heat generated by the heat generating device is removed from the heat receiving side of the heat dissipating tube by evaporation and condensation of the liquid in the heat dissipating tube It is transmitted to the heat release side of the heat pipe and then transmitted to the shield cover.
  • the extremely high thermal conductivity of the heat pipe is utilized to improve the heat dissipation effect of the terminal without additional heat dissipation material.
  • FIG. 1 is a schematic structural view of a heat dissipation device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of another heat dissipating device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of still another heat dissipating device according to an embodiment of the present invention.
  • the internal circuit board of the terminal generally shields the device on the internal circuit board of the terminal in a closed space through a shielding structure, thereby shielding.
  • the heat dissipating device and the terminal of the embodiment of the present invention improve the shielding structure of the existing structural component of the terminal in the prior art, that is, the internal circuit board of the terminal, and improve the heat dissipation effect of the terminal without additional heat dissipation material. Take full advantage of the space of the terminal.
  • FIG. 1 is a schematic structural view of a heat dissipating device according to an embodiment of the present invention.
  • a heat dissipating device 10 according to an embodiment of the present invention is applied to a circuit board 20 , and the heat dissipating device 10 includes a heat dissipating tube 101 (refer to FIG. 1 in the dotted line) and the shield 102, wherein:
  • the heat dissipating tube 101 is fixed on the circuit board 20 and surrounds the heat generating device on the circuit board 20, wherein the heat dissipating tube 101 is a tube body which is completely enclosed and has a vacuum cavity formed therein, and the inner wall of the tube is provided with a liquid absorbing core 101a.
  • the liquid absorbing core 101a (refer to the side view of the heat dissipating tube 101 in the lower part of FIG. 1) is adsorbed with a liquid 101b for transferring heat;
  • the shield cover 102 covers the heat dissipation pipe 101.
  • the heat generating device on the circuit board 20 may include a memory chip, a radio frequency power amplifier chip, a power management chip, and the like.
  • 1 shows a heat dissipating device 10 according to an embodiment of the present invention, taking a heat generating device 201a, a heat generating device 201b, a heat generating device 201c, a heat generating device 201d, and a heat generating device 201e as an example.
  • a heat generating device 201a surrounding the circuit board 20, a heat generating device 201b, a heat generating device 201c, a heat generating device 201d, a heat generating device 201e, and a heat dissipating tube 101 and a heat dissipating tube 101.
  • a shield 102 surrounding the above heat generating device. It can be understood that the heat pipe 101 surrounds the circuit board 20
  • the heat generating device may be specifically set according to the layout of the heat generating device on the actual circuit board 20 and the heat generation condition of each heat generating device, and the embodiment of the present invention does not specifically limit this.
  • the working principle of the heat dissipation device 10 proposed by the embodiment of the present invention is as follows:
  • the terminal when the terminal is working, devices on the circuit board 20 inside the terminal, such as the heat generating device 201a, the heat generating device 201b, the heat generating device 201c, the heat generating device 201d, and the heat generating device 201e in FIG.
  • the heat is radiated, and the heat-dissipating tube 101 surrounding the heat-generating device absorbs heat on the heat-receiving side of the heat-dissipating tube 101 on the side close to the heat-generating device, and transfers the heat to the liquid adsorbed by the wick 101a provided on the inner wall of the heat-dissipating tube 101.
  • the liquid 101b absorbs heat and is converted into steam in the form of evaporation.
  • the steam rises under the pressure difference to the side of the heat pipe 101 contacting the shield 102, that is, the heat release side of the heat pipe 101, and the steam condenses into a liquid, and The heat is transferred to the shield case 102, and the condensed liquid is recirculated by the wick 101a disposed on the inner wall of the heat pipe 101, and is circulated to realize heat transfer.
  • the heat pipe 101 utilizes the fluid principle to transfer heat generated by the heat generating device from the heat receiving side of the heat pipe 101 to the heat releasing side of the heat pipe 101 through the evaporation and condensation of the liquid 101b in the heat pipe 101, thereby transmitting To the shield case 102, the heat pipe 101 utilizes its extremely high thermal conductivity to improve the heat dissipation effect of the terminal.
  • the heat pipe 101 is made of metal.
  • the heat pipe 101 is soldered to the circuit board 20.
  • the gap between the shield case 102 and the upper surface of the heat generating device is filled with the heat dissipating material 103, wherein the shape of the heat dissipating material 103 is the same as the shape of the upper surface of the heat generating device. .
  • FIG. 2 is only described by taking the heat generating device 201c as an example.
  • the upper surface of the heat generating device refers to the side of the heat generating device facing the shield cover 102.
  • the gap between the shield cover 102 and the heat generating device is filled with the heat dissipating material 103, so that the heat dissipating area of the heat generating device can be increased, and the heat generated by the heat generating device is more effective.
  • the heat dissipation material 103 is transmitted to the shield cover 102 to further increase the heat dissipation effect of the heat dissipation device proposed by the embodiment of the present invention.
  • the heat dissipating material 103 comprises a thermally conductive silicone.
  • the upper surface of the shield case 102 is provided with at least one raised block for transferring heat.
  • the upper surface of the shield cover 102 is a surface corresponding to the terminal housing itself.
  • the upper surface of the shielding cover 102 is disposed through the at least one protruding block for abutting against the terminal housing, so that the heat transferred to the shielding cover 102 is further transmitted to the terminal housing, thereby increasing a type proposed by the embodiment of the present invention.
  • FIG. 3 is an example in which three convex blocks are disposed on the upper surface of the shield case 102 as an example.
  • the embodiment of the present invention further provides a circuit board on which at least one heat dissipating device in the above embodiment is disposed.
  • the embodiment of the present invention further provides a terminal including a circuit board provided with at least one heat dissipation device in the above embodiment.
  • the terminal includes a smart phone, a tablet computer and the like, and the present invention is not specifically limited.
  • the embodiments of the present invention provide a heat dissipating device, a circuit board, and a terminal.
  • the heat dissipating device includes: a heat dissipating tube and a shield cover, and heat generated by the heat generating device is evaporated and condensed by the liquid in the heat dissipating tube.
  • the heat-receiving side of the heat-dissipating tube is transmitted to the heat-dissipating side of the heat-dissipating tube, and then transmitted to the shielding cover.
  • the extremely high thermal conductivity of the heat-dissipating tube is utilized, and the heat-dissipating effect of the terminal is improved on the basis of no additional heat-dissipating material.

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Details Of Aerials (AREA)

Abstract

一种散热装置（10）、电路板以及终端。该散热装置（10）应用在电路板（20）上，包括散热管（101）和屏蔽罩（102），其中，所述散热管（101）固定在所述电路板（20）上且围绕于所述电路板（20）上的发热器件；所述屏蔽罩（102）覆盖于所述散热管（101）上；所述散热管（101）为全封闭的且内部形成真空空腔的管体，所述管体内壁设置有吸液芯（101a），所述吸液芯（101a）中吸附有用来传递热量的液体（101b）。

Description

一种散热装置、电路板及终端 技术领域
本实用新型涉及通信设备领域，尤其涉及一种散热装置、电路板及终端。
背景技术
随着人们对移动终端的性能要求越来越高，移动终端内部各种器件的运行速度也越来越快，各种器件的功耗也急剧增加，导致移动终端在工作时，移动终端内部各种器件的会产生大量的热量。因此，散热成为移动终端比较重要的一个问题。
为了解决移动终端的散热问题，现有技术通常采用散热材料如石墨、泡棉、硅胶等，将移动终端发热器件产生的热量由温度高的地方传递到温度低的地方，使得热量均匀的分布在移动终端上面，然后通过移动终端外壳将热量散发到空气中，达到散热的目的。
然而，移动终端内部的空间一般比较小，额外增加大面积的散热材料不易实施，且散热效果不佳。
实用新型内容
为解决上述技术问题，本实用新型实施例期望提供一种散热装置、电路板及终端，在无需额外增加散热材料基础上，提高了终端的散热效果。
本实用新型的技术方案是这样实现的：
第一方面，本实用新型实施例提供一种散热装置，应用在电路板上，所述散热装置包括：散热管和屏蔽罩，其中，所述散热管固定在所述电路板上且围绕于所述电路板上的发热器件；所述屏蔽罩覆盖于所述散热管上； 所述散热管为全封闭的且内部形成真空空腔的管体，所述管体内壁设置有吸液芯，所述吸液芯中吸附有用来传递热量的液体。
在上述方案中，所述散热管的管体材质为金属。
在上述方案中，所述散热管焊接在所述电路板上。
在上述方案中，所述屏蔽罩与所述发热器件上表面之间空隙处填充有散热材料，所述散热材料的形状与所述发热器件上表面的形状相同。
在上述方案中，所述散热材料包括导热硅胶。
在上述方案中，所述屏蔽罩的上表面设置有至少一个用于传递热量的凸起块。
第二方面，本实用新型实施例提供一种电路板，所述电路板上设置有上述的至少一个第一方面中任一项所述的散热装置。
第三方面，本实用新型实施例提供一种终端，所述终端包括第二方面所述的电路板。
本实用新型实施例提供了一种散热装置、电路板及终端，散热装置包括：散热管和屏蔽罩，通过散热管中的液体的蒸发与凝结，将发热器件产生的热量从散热管的受热侧传递至散热管的放热侧，进而传递到屏蔽罩，如此，利用散热管极高的导热性，实现了在无需额外增加散热材料基础上，提高了终端的散热效果。
附图说明
图1为本实用新型实施例提出的散热装置的结构示意图；
图2为本实用新型实施例提出的另一种散热装置的结构示意图；
图3为本实用新型实施例提出的又一种散热装置的结构示意图。
具体实施方式
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面 将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
现有技术中，为了防止电磁干扰，终端内部电路板一般都通过屏蔽结构将终端内部电路板上的器件包裹在封闭的空间，起到屏蔽作用。本实用新型实施例的散热装置及终端，通过对现有技术中终端已有的结构件即终端内部电路板的屏蔽结构进行改进，在没有额外增加散热材料的基础上，提高了终端的散热效果，充分利用了终端的空间。
图1示出了本实用新型实施例提出的散热装置的结构示意图，参照图1，本实用新型实施例提出的散热装置10应用在电路板20上，该散热装置10包括散热管101(参考图1中虚线所示)和屏蔽罩102，其中：
散热管101，固定在电路板20上且围绕于电路板20上的发热器件，其中，散热管101为全封闭的且内部形成真空空腔的管体，管体内壁设置有吸液芯101a，吸液芯101a(参考图1下方的散热管101侧视图所示)中吸附有用来传递热量的液体101b；
屏蔽罩102，覆盖于上述散热管101上。
需要说明的是，电路板20上的发热器件可以包括存储器芯片、射频功放芯片、电源管理芯片等器件。图1以发热器件201a、发热器件201b、发热器件201c、发热器件201d、发热器件201e为例对本实用新型实施例提出的散热装置10进行详细说明。图1示出的散热装置10包括：围绕于电路板20上发热器件201a、发热器件201b、发热器件201c、发热器件201d、发热器件201e的散热管101，及覆盖散热管101及散热管101所围绕的上述发热器件的屏蔽罩102。可以理解地，散热管101围绕于电路板20上的 发热器件，具体可以根据实际的电路板20上的发热器件布局以及各发热器件的发热情况来设置，本实用新型实施例对此不做具体限制。
本实用新型实施例提出的散热装置10的工作原理为：
以电路板应用在终端为例，当终端工作的时候，终端内部的电路板20上的器件，例如图1中的发热器件201a、发热器件201b、发热器件201c、发热器件201d、发热器件201e开始发热，围绕上述发热器件的散热管101在靠近发热器件的一侧即散热管101的受热侧，吸收热量，并将热量传递给设置在散热管101管体内壁的吸液芯101a所吸附的液体101b，液体101b吸收热量后以蒸发的形式转变为蒸汽，蒸汽在压差作用下上升至散热管101与屏蔽罩102接触的一侧即散热管101的放热侧，蒸汽凝结为液体，并将热量传递给屏蔽罩102，凝结液体回流被设置于散热管101管体内壁的吸液芯101a吸附，如此循环，实现热量的传递。也就是说，散热管101利用流体原理，通过散热管101内的液体101b的蒸发与凝结，实现将发热器件产生的热量从散热管101的受热侧传递至散热管101的放热侧，进而传递到屏蔽罩102，散热管101利用自身极高的导热性，提高了终端的散热效果。
示例性地，散热管101的管体材质为金属。
示例性地，散热管101焊接在电路板20上。
示例性地，参照图2下方的屏蔽罩102的侧视图，屏蔽罩102与发热器件上表面之间的空隙处填充有散热材料103，其中，散热材料103的形状与发热器件上表面的形状相同。
需要说明的是，图2仅以发热器件201c为例进行说明。发热器件的上表面是指发热器件面向屏蔽罩102的一面，用散热材料103填充屏蔽罩102与发热器件之间的空隙，可以加大发热器件的散热面积，使发热器件产生的热量更加有效的通过散热材料103传递到屏蔽罩102上，进一步增加本实用新型实施例提出的一种散热装置的散热效果。
优选地，散热材料103包括导热硅胶。
示例性地，参照图3下方的屏蔽罩102的侧视图，屏蔽罩102的上表面设置有至少一个用于传递热量的凸起块。
需要说明的是，以应用于终端的电路板为例，屏蔽罩102的上表面为自身对应终端外壳的一个表面。屏蔽罩102的上表面通过设置的至少一个凸起块，用于与终端外壳相抵接，使得传递到屏蔽罩102上的热量进一步传递到终端外壳上，从而增加本实用新型实施例提出的一种散热装置的散热效果。图3以屏蔽罩102的上表面设置三个凸起块为例进行说明。
本实用新型实施例还提供一种电路板，该电路板上设置有上述实施例中的至少一个散热装置。
另外，本实用新型实施例还提供一种终端，该终端包括设置有上述实施例中的至少一个散热装置的电路板。
其中，终端包括智能手机、平板电脑等设备，对此本实用新型不做具体限制。
综上所述，本实用新型实施例提供了一种散热装置、电路板及终端，散热装置包括：散热管和屏蔽罩，通过散热管中的液体的蒸发与凝结，将发热器件产生的热量从散热管的受热侧传递至散热管的放热侧，进而传递到屏蔽罩，如此，利用散热管极高的导热性，实现了在无需额外增加散热材料基础上，提高了终端的散热效果。
以上所述，仅为本实用新型的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本实用新型的保护范围之内。因此，本实用新型的保护范围应以所述权利要求的保护范围为准。

Claims (8)

  1. 一种散热装置，应用在电路板上，所述散热装置包括：散热管和屏蔽罩，其中，所述散热管固定在所述电路板上且围绕于所述电路板上的发热器件；所述屏蔽罩覆盖于所述散热管上；所述散热管为全封闭的且内部形成真空空腔的管体，所述管体内壁设置有吸液芯，所述吸液芯中吸附有用来传递热量的液体。
  2. 根据权利要求1所述的散热装置，其中，所述散热管的管体材质为金属。
  3. 根据权利要求1所述的散热装置，其中，所述散热管焊接在所述电路板上。
  4. 根据权利要求1所述的散热装置，其中，所述屏蔽罩与所述发热器件上表面之间空隙处填充有散热材料，所述散热材料的形状与所述发热器件上表面的形状相同。
  5. 根据权利要求4所述的散热装置，其中，所述散热材料包括导热硅胶。
  6. 根据权利要求1所述的散热装置，其中，所述屏蔽罩的上表面设置有至少一个用于传递热量的凸起块。
  7. 一种电路板，所述电路板上设置有权利要求1-6任一项所述的至少一个散热装置。
  8. 一种终端，所述终端包括权利要求7所述的电路板。
PCT/CN2015/083781 2014-12-16 2015-07-10 一种散热装置、电路板及终端 WO2016095507A1 (zh)

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CN204377305U (zh) * 2014-12-16 2015-06-03 中兴通讯股份有限公司 一种散热装置、电路板及终端
CN106341969A (zh) * 2015-07-09 2017-01-18 宏达国际电子股份有限公司 电子总成及电子装置
CN106231863A (zh) * 2016-07-28 2016-12-14 广东欧珀移动通信有限公司 Pcb板组件及具有其的移动终端
CN208143670U (zh) * 2017-12-08 2018-11-23 南昌黑鲨科技有限公司 智能终端散热结构

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