WO2016029588A1 - 散热装置和便携设备 - Google Patents

散热装置和便携设备 Download PDF

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Publication number
WO2016029588A1
WO2016029588A1 PCT/CN2014/093064 CN2014093064W WO2016029588A1 WO 2016029588 A1 WO2016029588 A1 WO 2016029588A1 CN 2014093064 W CN2014093064 W CN 2014093064W WO 2016029588 A1 WO2016029588 A1 WO 2016029588A1
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WO
WIPO (PCT)
Prior art keywords
fan
air outlet
heat sink
heat
air
Prior art date
Application number
PCT/CN2014/093064
Other languages
English (en)
French (fr)
Inventor
孟英利
Original Assignee
京东方科技集团股份有限公司
北京京东方茶谷电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方茶谷电子有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/768,903 priority Critical patent/US9720465B2/en
Priority to EP14892226.3A priority patent/EP3188579B1/en
Publication of WO2016029588A1 publication Critical patent/WO2016029588A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G06F1/203—Cooling means for portable computers, e.g. for laptops
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20172—Fan mounting or fan specifications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • F28D2021/0029—Heat sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F2013/005—Thermal joints
    • F28F2013/006—Heat conductive materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/08—Fluid driving means, e.g. pumps, fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/02—Removable elements

Definitions

  • Embodiments of the present invention relate to a heat sink and a portable device.
  • Portable devices such as laptops, tablets, navigators or mobile phones have the advantages of being easy to carry and feature-rich, and have become a common life or office tool in daily life.
  • the power supply device such as a lithium ion battery is also an optimum choice due to its large capacity and small size.
  • the embodiment of the invention provides a heat dissipating device, comprising: at least two heat sinks, each of the heat sinks being connected by a heat pipe; and a fan fixed on one of the at least two heat sinks.
  • the fan has an air inlet and at least two air outlets, and the air outlets of the air outlets are different in direction.
  • Each of the air outlets is provided with a detachable windshield, and the air outlets are in corresponding places. When the windshield is pulled out, the air is exhausted outward.
  • the fan includes a first air outlet and a second air outlet, and the air outlets of the first air outlet and the second air outlet are opposite in direction and are both perpendicular to an axial direction of the fan.
  • the heat dissipation device further includes a first flow guiding fin set and a second flow guiding fin set, and the first guiding fin set is corresponding to the first air outlet setting of the fan, and is configured Exchanging the exhaust air of the first air outlet; the second air guiding fin group is disposed corresponding to the second air outlet of the fan, and is configured to guide the exhaust air of the second air outlet.
  • the first flow guiding fin set and the second flow guiding fin set are respectively connected to both ends of the heat sink to which the fan is fixed.
  • the first flow guiding fin set, the second flow guiding fin set, and the heat sink fixed to the fan are integral, the first guiding fin group and the The second flow guiding fin sets are respectively located at opposite ends of the heat sink to which the fan is fixed.
  • the embodiment of the invention further provides a portable device, comprising the heat dissipation device provided by the above embodiment.
  • the portable device further includes at least one processor and a device that needs to maintain a certain ambient temperature to operate as usual, and the heat sink of the heat sink that fixes the heat sink of the fan Fitting the processor to acquire heat generated by the processor when the portable device is in operation; and one of each air outlet of the fan of the heat sink is facing the device to be in a low temperature environment After the corresponding windshield is removed, heat is supplied to the device.
  • the fan is a centrifugal fan.
  • the portable device further includes a metal cover over the device.
  • the device is a lithium ion battery.
  • the processor is at least one of a central processing unit, a display processor, and an audio processor.
  • the portable device is a laptop, cell phone, navigator, tablet, or self-powered display.
  • the power supply device is a lithium ion battery.
  • FIG. 1 is a schematic structural diagram of a first heat dissipation device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a second heat dissipation device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a third heat dissipation device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a fourth heat dissipation device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural view showing a split arrangement of a flow guiding fin group and a second heat sink according to an embodiment of the present invention
  • FIG. 6 is a schematic structural view of a flow guiding fin group and a second heat sink as a whole according to an embodiment of the present invention
  • FIG 7 is a partial perspective view of the heat sink shown in Figure 4.
  • FIG. 8 is a schematic diagram showing a partial structure of a portable device according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing a partial structure of another portable device according to an embodiment of the present invention.
  • lithium ion batteries are "cold-proof" during use.
  • a typical lithium-ion battery will have a 20% reduction in capacity at zero, and a capacity reduction of about half at less than minus 10 degrees. Therefore, in a low temperature environment, the standby capability of a portable device powered by a lithium ion battery is significantly reduced, which limits the application of a portable device using a lithium ion battery in a low temperature environment; meanwhile, the capacity of the lithium ion battery after restoring the normal temperature working environment. Will gradually recover, but the use of low temperature environment will still damage the life of lithium batteries.
  • Embodiments of the present invention provide a heat sink and portable device that can self-provide heat for a power supply device or battery that needs to maintain a proper operating environment temperature to ensure that its own power supply device, such as a battery, operates as usual.
  • an embodiment of the present invention provides a heat dissipation device 10 including at least two heat sinks, such as a heat sink 1 and a heat sink 2 .
  • the heat pipe 3 is connected to the heat sink 1 and the heat sink 2.
  • the heat sink 10 further includes a fan, such as a centrifugal fan 4, and one of the heat sinks fixed to each of the heat sinks is fixed to the heat sink 2, for example.
  • the heat sink 1 and the heat sink 2 shown in this embodiment are merely illustrative, and the heat sink in the present invention is not limited to the above two, and may be three, four or more heat sinks. As shown in FIGS.
  • the heat sink 10 includes a heat sink 1, a heat sink 2, and a heat sink 8, wherein the centrifugal fan 4 is fixed to the heat sink 2.
  • the heat sinks other than the heat sink 2 of the centrifugal fan 4 (the heat sink 1 and the heat sink 8 shown in FIG. 2) are connected to the heat sink 2 through the heat transfer tubes 3.
  • the heat sink 1, the heat sink 2, and the heat sink 8 are all connected by a heat transfer pipe 3. It should be noted that the shape of each fin may be the same or different.
  • the centrifugal fan 4 has an air inlet 41 and at least two air outlets 42.
  • the air outlets 42 have different air outlet directions.
  • Each of the air outlets 42 is provided with a detachable wind deflector 43 which is vented outward when the corresponding windshield 43 is withdrawn.
  • the airflow of the centrifugal fan 4 has a certain directionality and has a corresponding curve. Therefore, the arrangement of the air inlet 41 and the air outlet 42 is based on the airflow curve of the centrifugal fan 4, and details are not described herein again.
  • the air outlets 42 can be exhausted according to the change of the application environment.
  • the centrifugal fan 4 has an air outlet A, an air outlet B, an air outlet C, and an air outlet D.
  • the air outlet A and the air outlet B are exhausted, and the air outlet C and the air outlet D correspond to each other.
  • the windshield 43 is inserted into the corresponding position to block the air outlet C and the air outlet D from exhausting.
  • the air outlet C and the air outlet D are exhausted, and the wind deflector 43 corresponding to the air outlet A and the air outlet B is inserted into the corresponding position to block the air outlet A and the air outlet B from exhausting.
  • the exhaust of the air outlet C and the air outlet D is directed to a device that needs to maintain an ambient operating temperature.
  • the centrifugal fan 4 includes a first air outlet 421 and a second air outlet 422, and the air outlets of the first air outlet 421 and the second air outlet 422 are opposite to each other and are connected to the centrifugal fan 4
  • the axial direction is vertical, and the axial direction of the centrifugal fan 4 is perpendicular to the fins 2.
  • the first fin group 44 and the second fin fin group are further disposed on the heat sink 2 of the heat sink. 45.
  • the first flow guiding fin group 44 is disposed corresponding to the first air outlet 421 of the centrifugal fan 4 for guiding the exhaust air of the first air outlet 421; the second guiding fin 45 group corresponds to the second of the centrifugal fan 4
  • the air outlet 422 is provided for guiding the exhaust air of the second air outlet 422.
  • the first guiding fin group 44, the second guiding fin group 45 and the heat sink 2 have a plurality of arrangement structures. Referring to FIG. 5, the first guiding fin group 44 and the second guiding fin group 45 and the heat dissipation
  • the two-piece design of the sheet 2 can be connected to the two ends of the heat sink 2, for example, the first flow guiding fin group 44 and the second flow guiding fin group 45 can be freely disposed, and thus are relatively flexible.
  • the first flow guiding fin group 44, the second flow guiding fin group 45, and the heat sink 2 are integrally formed from the viewpoint of ease of mounting.
  • First A flow guiding fin group 44 and a second flow guiding fin group 45 are respectively connected to opposite ends of the heat sink 2.
  • the first flow guiding fin group 44, the second flow guiding fin group 45 and the heat sink 2 are of a unitary structure, it is only necessary to consider the determination of the installation position, and it is not necessary to debug the parts. Positional relationship.
  • the first flow guiding fin group 44 and the second flow guiding fin group 45 in the embodiment can also be disposed in the heat dissipating device 10 shown in FIG. 2 and FIG. 3 , and details are not described herein again.
  • FIG. 7 a partial perspective view of the heat sink 10 is illustrated by taking the first flow guiding fin set 44 , the second flow guiding fin set 45 and the heat sink 2 as a whole.
  • the centrifugal fan 4 includes an air inlet 41, a first air outlet 421, and a second air outlet 422.
  • the centrifugal fan 4 is disposed on the heat sink 2, and the first air outlet 421 faces the first air guiding fin.
  • the group 44, the second air outlet 422 is opposite to the second air guiding fin group 45, and the windshield 43 shown in FIGS. 1 to 3 is respectively disposed at the first air outlet 421 and the second air outlet 422.
  • the first air outlet 421 and the second air outlet 422 are exhausted or not exhausted by extracting or inserting the windshield 43 corresponding to the first air outlet 421 and the second air outlet 422.
  • the first air outlet 421 can be extended out of the device, and the second air outlet 422 can face the lithium ion battery.
  • the windshield 43 corresponding to the first air outlet 421 is extracted, and the wind deflector 43 corresponding to the second air outlet 422 is inserted, so that the first air outlet 421 is exhausted to the outside of the device, thereby achieving heat dissipation;
  • the windshield 43 corresponding to the first air outlet 421 is inserted, the windshield 43 corresponding to the second air outlet 422 is extracted, so that the second air outlet 422 is exhausted to the lithium ion battery, thereby heating the lithium ion battery.
  • the beneficial effects of the embodiments of the present invention are as follows: by providing at least two air outlets on the centrifugal fan and the windshield at the air outlet position, the centrifugal fans can select different air outlets for exhausting under different working conditions.
  • the heat dissipating device is used for a portable device, and when the portable device works normally or in a low temperature environment, the air can be exhausted by different air outlets; especially in a low temperature environment, the heat generated by the at least one processor can be generated by the first heat sink and the heat pipe. Leading to the second heat sink, and discharging the hot air from an air outlet to heat the lithium ion battery of the portable device, thereby improving the standby capability of the portable device in a low temperature environment and reducing damage to the lithium ion battery.
  • an embodiment of the present invention provides a portable device 20, including the heat dissipation device 10 provided by the above embodiment.
  • the portable device 20 further includes at least one processor 11 (only one processor 11 is shown in FIG. 8) and a lithium ion battery. 12.
  • Each of the fins of the heat sink 10 that is fixed to the centrifugal fan 4 is attached to the heat sink 11.
  • the heat sink 1 shown in FIG. 8 is used to obtain the heat generated by the processor 11 when the portable device 20 is in operation.
  • one processor may be attached by a plurality of heat sinks, or a plurality of heat sinks may be attached to the plurality of processors one by one, for example, the portable device 20 shown in FIG. 9 (the same as FIG. 8)
  • the same reference numerals are used to include the processor 11 and the processor 14, the heat sink 1 is attached to the processor 11, and the heat sink 1 is attached to the processor 14.
  • One of the air outlets of the centrifugal fan 4 of the heat sink 10 (at least two air outlets, such as the first air outlet 421 and the second air outlet 422 shown in FIG. 8) is required to maintain a certain ambient temperature.
  • the second air outlet 422 faces the device 12 that requires heating.
  • the second air outlet 422 is used to supply heat to the device 12 after the corresponding windshield 43 is removed in a low temperature environment.
  • the heat sink 1 attached to each processor 11 collects the heat generated by each processor 11 and conducts it to the heat sink 2 through the heat pipe 3.
  • the windshield 43 corresponding to the first air outlet 421 is extracted, and the wind deflector 43 corresponding to the second air outlet 422 is inserted, so that the first air outlet 421 is exhausted to the outside of the device, thereby achieving heat dissipation;
  • the wind deflector 43 corresponding to the second air outlet 422 is drawn out, so that the second air outlet 422 is exhausted to the device 12, thereby heating the device 12.
  • a metal cover can also be placed over the battery 12 for protecting devices such as the lithium ion battery 12 and capable of accelerating heat transfer.
  • the device is, for example, a lithium ion battery, or other battery or other device that needs to maintain a certain ambient temperature to function as usual.
  • the processor 11 is at least one of a central processing unit, a display processor, and an audio processor.
  • a portable device is a laptop, cell phone, navigator, tablet, or self-powered display.
  • the beneficial effects of the embodiments of the present invention are as follows: at least two air outlets are disposed on the centrifugal fan of the portable device, and a wind deflector is disposed at the air outlet position, and the centrifugal fan can be selected to perform different air outlets under different working conditions. .
  • the windshield corresponding to the first air outlet can be taken out, and the windshield corresponding to the second air outlet is inserted, so that the first air outlet is exhausted to the outside of the device, thereby achieving heat dissipation.
  • the heat generated by the at least one processor can be guided to the second heat sink by the first heat sink and the heat pipe, and the hot air is discharged from an air outlet for the portable device to maintain a certain ambient temperature to work as usual.
  • a battery such as a lithium ion battery
  • the portable device In a low temperature environment, the heat generated by the at least one processor can be guided to the second heat sink by the first heat sink and the heat pipe, and the hot air is discharged from an air outlet for the portable device to maintain a certain ambient temperature to work as usual.
  • a battery such as a lithium ion battery

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Abstract

一种散热装置和便携设备。所述散热装置（10）包括：至少两个散热片（1，2），各所述散热片通过导热管（3）连接；风扇（4），所述风扇（4）固定于所述至少两个散热片中的一个散热片之上；所述风扇（4）具有一进风口（41）和至少两个出风口（42），各所述出风口的出风方向不同，每一所述出风口处设置有可拆卸的挡风板（43），所述出风口在相对应的所述挡风板（43）抽出时向外排风。

Description

散热装置和便携设备 技术领域
本发明的实施例涉及一种散热装置和便携设备。
背景技术
笔记本电脑、平板电脑、导航仪或手机等便携设备，具有携带方便、功能丰富的优点，已经成为了日常生活中常见的生活或办公工具。
在上述的便携设备中，需要为设备提供运行的电能，锂离子电池之类的电能供应装置由于容量大、体积小的优点也成为最优选择。
发明内容
本发明实施例提供一种散热装置，包括：至少两个散热片，各所述散热片通过导热管连接；以及固定于所述至少两个散热片中的一个散热片之上的风扇。所述风扇具有一进风口和至少两个出风口，各所述出风口的出风方向不同，每一所述出风口处设置有可拆卸的挡风板，所述出风口在相对应的所述挡风板抽出时向外排风。
在一个示例中，所述风扇包括第一出风口和第二出风口，所述第一出风口和所述第二出风口的出风方向相反且均与所述风扇的轴向垂直。
在一个示例中，所述散热装置还包括第一导流鳍片组和第二导流鳍片组，所述第一导流鳍片组对应所述风扇的所述第一出风口设置，配置来导流所述第一出风口的排风；所述第二导流鳍片组对应所述风扇的所述第二出风口设置，配置来导流所述第二出风口的排风。
在一个示例中，所述第一导流鳍片组、所述第二导流鳍片组分别与固定有所述风扇的所述散热片的两端相连。
在一个示例中，所述第一导流鳍片组、所述第二导流鳍片组和固定有所述风扇的所述散热片为一整体，所述第一导流鳍片组和所述第二导流鳍片组分别位于固定有所述风扇的所述散热片的相对的两端。
本发明实施例还提供一种便携设备，包括如上实施例提供的所述散热装置。
在一个示例中，所述便携设备还包括至少一个处理器和需要维持一定环境温度才能如常工作的器件，所述散热装置的固定所述风扇的所述散热片之外的其他各所述散热片贴合所述处理器，以在所述便携设备工作时获取所述处理器产生的热量；并且所述散热装置的风扇的各出风口中的其中之一正对所述器件，以在低温环境下去掉相对应的挡风板后，为所述器件供热。
在一个示例中，所述风扇为离心式风扇。
在一个示例中，所述便携设备还包括金属罩，所述金属罩罩于所述器件之上。
在一个示例中，所述器件为锂离子电池。
在一个示例中，所述处理器为中央处理器、显示处理器和音频处理器中的至少一个。
在一个示例中，所述便携设备为笔记本电脑、手机、导航仪、平板电脑或自供电的显示器。
在一个示例中，所述电源装置为锂离子电池。
附图说明
以下将结合附图对本发明的实施例进行更详细的说明，以使本领域普通技术人员更加清楚地理解本发明，其中：
图1为本发明实施例提供的第一种散热装置的结构示意图；
图2为本发明实施例提供的第二种散热装置的结构示意图；
图3为本发明实施例提供的第三种散热装置的结构示意图；
图4为本发明实施例提供的第四种散热装置的结构示意图；
图5为本发明实施例中导流鳍片组与第二散热片分体设置的结构示意图；
图6为本发明实施例中导流鳍片组与第二散热片为一整体的结构示意图；
图7为图4所示的散热装置的局部立体示意图；
图8为本发明实施例提供的一种便携装置的局部结构示意图；
图9为本发明实施例提供的另一种便携装置的局部结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。需要注意的是，本文中相同或类似的标号表示相同或类 似的元件或具有相同或类似功能的元件。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本发明专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“上”、“下”、等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
发明人注意到，在使用过程中，某些器件或电能供应装置，例如，锂离子电池具有“怕冷”的特点。例如，一般锂离子电池在零度时其容量会减少20％，当低于零下10度时容量会减少约一半左右。因此，在低温环境下，应用锂离子电池供电的便携设备的待机能力明显下降，限制了使用锂离子电池的便携设备在低温环境下的应用；同时，虽然恢复常温工作环境后锂离子电池的容量会逐渐恢复，但是曾经在低温环境下的使用还是会对锂子电池的使用寿命造成损害。
本发明的实施例提供了一种散热装置和便携设备可以为需要保持适当工作环境温度的电源装置或电池自我提供热量，以保证其自身的电源装置例如电池如常工作。
实施例一
参见图1，本发明实施例提供一种散热装置10，包括至少两个散热片，例如散热片1和散热片2。导热管3连接散热片1和散热片2。散热装置10还包括风扇，例如离心式风扇4，固定于各散热片中的其中一个散热片，例如固定于散热片2之上。为了方便说明，本实施例示出的散热片1和散热片2仅为了说明，本发明中的散热片不限于以上两个，可以为三个、四个或更多个的散热片。如图2和图3所示的散热装置10，散热装置10包括散热片1、散热片2和散热片8，其中离心式风扇4固定于散热片2上。在图2中，固定 离心式风扇4的散热片2之外的其他散热片(如图2所示的散热片1和散热8)均通过导热管3与散热片2连接。在图3中，散热片1、散热片2和散热8均通过导热管3连接。需要说明的是，各散热片的形状可以相同也可以不同。
离心式风扇4具有一进风口41和至少两个出风口42。各出风口42的出风方向不同。每一出风口42处设置有可拆卸的挡风板43，出风口42在相对应的挡风板43抽出时向外排风。
需要说明的是，离心式风扇4的气流具有一定方向性，其具有相应的曲线，因此该进风口41和出风口42的设置以该离心式风扇4气流曲线为依据，在此不再赘述。
本实施例中，通过设置至少两个出风口42，可以根据应用环境的变化，以不同的出风口42进行排风。例如，假设离心式风扇4具有出风口A、出风口B、出风口C和出风口D，在常温环境下，以出风口A和出风口B进行排风，出风口C和出风口D所对应的挡风板43插入相应位置，以阻挡出风口C和出风口D排风。在低温情况下，出风口C和出风口D进行排风，出风口A和出风口B所对应的挡风板43插入相应位置，以阻挡出风口A和出风口B排风。
例如，如下文将关于使用该散热装置的便携设备所描述的，将出风口C和出风口D的排风正对需要维持环境工作温度的器件。
参见图4，为了简化设计，例如，离心式风扇4包括第一出风口421和第二出风口422，第一出风口421和第二出风口422的出风方向相反且均与离心式风扇4的轴向垂直，离心式风扇4的轴向与散热片2垂直。同时，为了使第一出风口421和第二出风口422的排风更具有方向性，在散热装置的散热片2上还设置有第一导流鳍片组44和第二导流鳍片组45。第一导流鳍片组44对应离心式风扇4的第一出风口421设置，用于导流第一出风口421的排风；第二导流鳍片45组对应离心式风扇4的第二出风口422设置，用于导流第二出风口422的排风。
第一导流鳍片组44、第二导流鳍片组45和散热片2有多个设置结构，参见图5，第一导流鳍片组44和第二导流鳍片组45与散热片2分体设计，例如可以连接于散热片2的两端，在本实施例中，第一导流鳍片组44和第二导流鳍片组45可以自由设置，因此比较灵活。如图6所示，从易于安装的角度考虑，例如，第一导流鳍片组44、第二导流鳍片组45和散热片2为一整体。第 一导流鳍片组44和第二导流鳍片组45分别连接散热片2的相对的两端。在本实施例中，由于第一导流鳍片组44、第二导流鳍片组45和散热片2为整体结构，因此仅需要考虑安装位置的确定即可，不需要再调试各部分的位置关系。
根据本发明思想，本实施例中的第一导流鳍片组44、第二导流鳍片组45同样可以设置于图2和图3所示的散热装置10中，在此不再赘述。
参见图7，以第一导流鳍片组44、第二导流鳍片组45和散热片2为一整体为例，示出了散热装置10的局部立体示意图。如图所示，离心式风扇4包括进风口41、第一出风口421和第二出风口422，离心式风扇4设置于散热片2上，第一出风口421正对第一导流鳍片组44，第二出风口422正对第二导流鳍片组45，在第一出风口421和第二出风口422分别设置如图1至3所示的挡风板43。通过抽出或插入第一出风口421和第二出风口422相对应的挡风板43，来使第一出风口421和第二出风口422排风或不排风。在应用于便携设备时，可以使第一出风口421延伸出设备外，使第二出风口422正对锂离子电池。环境温度正常时，第一出风口421对应的挡风板43抽出，第二出风口422对应的挡风板43插入，以使第一出风口421向设备外排风，从而实现散热；低温环境时，第一出风口421对应的挡风板43插入，第二出风口422对应的挡风板43抽出，以使第二出风口422向锂离子电池排风，从而对锂离子电池加热。
本发明实施例有益效果如下：通过在离心式风扇上设置至少两个出风口，且在出风口位置设备挡风板，可以在离心式风扇在不同工作状况下选择不同的出风口进行排风。该散热装置用于便携设备，在便携设备正常工作或处于低温环境时，可以由不同出风口排风；尤其在低温环境时，可以由第一散热片和导热管将至少一个处理器产生的热量导至第二散热片，并由一出风口排出热风为便携设备的锂离子电池加热，从而提高便携设备在低温环境下的待机能力并降低对锂离子电池的损害。
实施例二
参见图8，本发明实施例提供一种便携设备20，包括如上实施例提供的散热装置10，便携设备20还包括至少一个处理器11(图8仅示出一个处理器11)和锂离子电池12。
散热装置10的固定离心式风扇4的散热片以外的各散热片贴合处理器 11，例如如图8所示的散热片1，散热片1用于在便携设备20工作时获取处理器11产生的热量。需要说明的是，可以以多个散热片贴合一个处理器，也可以多个散热片与多个处理器一一对应贴合，例如图9所示的便携设备20(与图8相同的附图标记含义也相同)，包括处理器11和处理器14，散热片1贴合处理器11，散热片1贴合处理器14。
散热装置10的离心式风扇4的各出风口(出风口为至少两个，如图8所示的第一出风口421和第二出风口422)中的其中之一正对需要保持一定环境温度才能如常工作的器件12，例如，锂离子电池。在本实施例中，第二出风口422正对需要加热的器件12。第二出风口422用于在低温环境下去掉相对应的挡风板43后，为器件12供热。在便携设备20工作时，贴合于各处理器11的散热片1采集各处理器11产生的热量，并通过导热管3传导至散热片2。环境温度正常时，第一出风口421对应的挡风板43抽出，第二出风口422对应的挡风板43插入，以使第一出风口421向设备外排风，从而实现散热；低温环境时，第一出风口421对应的挡风板43插入，第二出风口422对应的挡风板43抽出，以使第二出风口422向器件12排风，从而对器件12加热。
例如，还可以在电池12之上设置金属罩，用于保护器件，例如锂离子电池12，并能够加速热传导。
在上述实施例中，所述器件例如为锂离子电池，或者其它需要保持一定环境温度才能如常工作的其它电池或其它器件。
例如，处理器11为中央处理器、显示处理器和音频处理器中的至少一个。
例如，便携设备为笔记本电脑、手机、导航仪、平板电脑或自供电的显示器。
本发明实施例有益效果如下：便携设备的离心式风扇上设置至少两个出风口，且在出风口位置设置挡风板，可以在离心式风扇在不同工作状况下选择不同的出风口进行排风。环境温度正常时，可以将第一出风口对应的挡风板抽出，第二出风口对应的挡风板插入，以使第一出风口向设备外排风，从而实现散热。在低温环境时，可以由第一散热片和导热管将至少一个处理器产生的热量导至第二散热片，并由一出风口排出热风为便携设备的需要保持一定环境温度才能如常工作的器件，例如，电池(例如锂离子电池)加热，从而提高便携设备在低温环境下的待机能力并降低对器件或电池(例如锂离子电池)的损害。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2014年08月28日提交的名称为“一种散热装置和便携设备”的中国专利申请No.201410432200.4的优先权，其全文以引用方式合并于本文。

Claims (13)

  1. 一种散热装置，包括：
    至少两个散热片，各所述散热片通过导热管连接；以及
    固定于所述至少两个散热片中的一个散热片之上的风扇；
    其中所述风扇具有一进风口和至少两个出风口，各所述出风口的出风方向不同，每一所述出风口处设置有可拆卸的挡风板，所述出风口在相对应的所述挡风板抽出时向外排风。
  2. 如权利要求1所述的散热装置，其中，所述风扇包括第一出风口和第二出风口，所述第一出风口和所述第二出风口的出风方向相反且均与所述风扇的轴向垂直。
  3. 如权利要求1或2所述的散热装置，还包括第一导流鳍片组和第二导流鳍片组，所述第一导流鳍片组对应所述风扇的所述第一出风口设置，配置来导流所述第一出风口的排风；所述第二导流鳍片组对应所述风扇的所述第二出风口设置，配置来导流所述第二出风口的排风。
  4. 如权利要求3所述的散热装置，其中，所述第一导流鳍片组、所述第二导流鳍片组分别与固定有所述风扇的所述散热片的两端相连。
  5. 如权利要求3所述的散热装置，其中，所述第一导流鳍片组、所述第二导流鳍片组和固定有所述风扇的所述散热片为一整体，所述第一导流鳍片组和所述第二导流鳍片组分别位于固定有所述风扇的所述散热片的相对的两端。
  6. 如权利要求1-5任一项所述的散热装置，其中，所述风扇为离心式风扇。
  7. 一种便携设备，包括如权利要求1-6任一项所述散热装置。
  8. 如权利要求7所述的便携设备，还包括至少一个处理器和需要维持一定环境温度才能如常工作的器件，
    其中所述散热装置的固定有所述风扇的所述散热片之外的其他各所述散热片贴合所述处理器，以在所述便携设备工作时获取所述处理器产生的热量；并且
    所述散热装置的风扇的各出风口中的其中之一正对所述器件，以在低温环境下去掉相对应的挡风板后，为所述器件供热。
  9. 如权利要求8所述的便携设备，其中，所述风扇为离心式风扇。
  10. 如权利要求7-9任一项所述的便携设备，还包括金属罩，所述金属罩罩于所述器件之上。
  11. 如权利要求7-10任一项所述的便携设备，其中，所述器件为锂离子电池。
  12. 如权利要求7-11任一项所述的便携设备，其中，所述处理器为中央处理器、显示处理器和音频处理器中的至少一个。
  13. 如权利要求7-12任一项所述的便携设备，包括：笔记本、电脑、手机、导航仪、平板电脑或自供电的显示器。
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CN104202949A (zh) 2014-12-10
EP3188579A4 (en) 2018-05-23

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