WO2015184603A1 - 一种电子设备 - Google Patents
一种电子设备 Download PDFInfo
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- WO2015184603A1 WO2015184603A1 PCT/CN2014/079149 CN2014079149W WO2015184603A1 WO 2015184603 A1 WO2015184603 A1 WO 2015184603A1 CN 2014079149 W CN2014079149 W CN 2014079149W WO 2015184603 A1 WO2015184603 A1 WO 2015184603A1
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- WIPO (PCT)
- Prior art keywords
- heat pipe
- heat
- pipe
- electronic device
- different
- Prior art date
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Classifications
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- 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
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- 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
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
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- 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
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- 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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20336—Heat pipes, e.g. wicks or capillary pumps
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- 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
Definitions
- the present invention relates to the field of heat dissipation technologies, and in particular, to an electronic device. Background technique
- LTE Long Term Evolution
- the present invention provides an electronic device to solve the technical problem of poor heat dissipation performance of the electronic device in the prior art, and improve the heat dissipation performance of the electronic device.
- an embodiment of the present application provides an electronic device, where the electronic device includes a heat generating component, and the heat generating component is disposed on a circuit board PCB, and the electronic device further includes:
- the heat pipe group includes at least two heat pipes, the heat pipe group is located on the heat generating component, and at least one characteristic parameter of each heat pipe in the heat pipe group is different from each other, and each heat pipe of the heat pipe group is optimal The working area is different.
- the heat resistance of each heat pipe in the heat pipe group ranges from 0.05 to 1 ° C/W.
- the characteristic parameters are: a diameter of a heat pipe, a cross-sectional area of a capillary layer of a heat pipe, a quality of a heat pipe, a type of a working medium of the heat pipe, a pipe of the heat pipe, and the same pipe One or more of the thickness of the heat pipe.
- a thermal interface material is disposed between the heat generating component and the heat pipe set.
- the heating element is a CPU, GPU or CPU and GPU.
- the heat pipe group includes two heat pipes, and the characteristic parameter is a pipe diameter of the heat pipe;
- the diameters of the first heat pipe and the second heat pipe are different in the two heat pipes.
- the first heat pipe and the second heat pipe are the same as the pipe diameter of the heat pipe, the first heat pipe is the same.
- the diameter of the tube is greater than the diameter of the second heat pipe, the first heat pipe is a high temperature high efficiency heat pipe, and the second heat pipe is a low temperature high efficiency heat pipe; or
- the characteristic parameter is a cross-sectional area of a capillary layer of the heat pipe
- the cross-sectional area of the capillary layer of the first heat pipe and the second heat pipe are different between the two heat pipes, and when the first heat pipe and the second heat pipe are the same as the cross-sectional area of the capillary layer of the heat pipe, the other characteristic parameters are the same.
- the first heat pipe is a high temperature high efficiency heat pipe; the second heat pipe is a low temperature high efficiency heat pipe; or the first heat pipe has a capillary layer cross-sectional area larger than the second heat pipe cross-sectional area;
- the characteristic parameter is the quality of the heat pipe
- the first heat pipe and the second heat pipe of the two heat pipes are different in quality.
- the first heat pipe is the same.
- the mass of the injected heat is equal to the actual capillary demand, and the mass of the second heat pipe is lower than the actual capillary demand, the first heat pipe is a high temperature heat pipe; the second heat pipe is a low temperature heat pipe; or
- the characteristic parameter is a working medium of a heat pipe
- the working heat of the first heat pipe and the second heat pipe are different between the two heat pipes, when the first heat pipe and the first heat pipe
- the latent heat of the working medium of the first heat pipe is greater than the latent heat of the working medium of the second heat pipe
- the first heat pipe is a high temperature high efficiency heat pipe.
- the second heat pipe is a low temperature high efficiency heat pipe.
- an electronic device in a second aspect, includes a heat generating component, and the heat generating component is disposed on a circuit board PCB, and the electronic device further includes:
- the heat pipe includes at least two independent heat conduction channels, wherein the heat pipe is located on the heating element, and at least one characteristic parameter of each heat conduction channel in the heat pipe is different from each other, and the heat conduction channels of the heat pipe are the most The preferred working areas are different.
- the thermal resistance of each heat conducting channel of the heat pipes ranges from 0.05 to 1 ° C/W.
- the characteristic parameters are: a diameter of a heat conduction channel, a cross-sectional area of a capillary layer of a heat conduction channel, a work quality of a heat conduction channel, a type of a heat conduction channel, and a pipe of a heat conduction channel And one or more of the thickness of the tubing of the thermally conductive channel.
- a thermal interface material is disposed between the heat generating component and the heat pipe.
- an electronic device in a third aspect, includes a heating element, the heating element is disposed on a circuit board PCB, and the electronic device further includes a first heat pipe and a second heat pipe: the first heat pipe and the The heating element is disposed on the same side of the PCB, and the first heat pipe is connected to the heating element;
- the second heat pipe is disposed at a second position of the PCB, and the second heat pipe is connected to the heat generating component through a heat conductive metal, wherein a back surface of the second position of the PCB is provided with the heat generating component;
- the at least one characteristic parameter of the first heat pipe and the second heat pipe are different, the first heat pipe is different from the optimal working area of the second heat pipe, and the first heat pipe and the second heat pipe When the heat pipe works in the corresponding optimal working area, the thermal resistance of the first heat pipe and the second heat pipe ranges from 0.05 to 1 ° C/W.
- the first heat pipe is connected to the heat generating component, specifically: The first heat pipe is located on the heating element, and a thermal interface material is disposed between the first heat pipe and the heating element; or
- the first heat pipe and the heat generating component are connected by the heat conducting metal, and the heat conducting metal is a copper plating layer of the PCB.
- the characteristic parameters are: the diameter of the heat pipe, the cross-sectional area of the capillary of the heat pipe, the quality of the heat pipe, the type of the heat pipe, the pipe of the heat pipe, and the heat pipe of the same pipe One or more of the thickness of the pipe.
- heat dissipation of the mobile electronic device is implemented by using a heat pipe, and heat of the heat generating component follows the electronic device
- a corresponding heat pipe group is disposed on the same heating element, and the heat pipe group includes at least two heat pipes, and the optimal working areas of the heat pipes are different;
- the maximum heat transfer capacity of the heat pipe will be different, so the heat pipes with different characteristic parameters can be heat-dissipated for different working states of the heat-generating component.
- FIG. 1 is a schematic structural diagram of an electronic device according to a first embodiment of the present application
- FIG. 2 is a schematic structural diagram of an electronic device according to a second embodiment of the present application
- FIG. 4 is a schematic structural diagram of an electronic device according to Embodiment 1 of the third embodiment of the present invention
- FIG. 5 is a schematic structural diagram of an electronic device according to Embodiment 2 of Embodiment 3 of the present application. detailed description
- a heat pipe is an effective heat transfer element.
- the heat pipe has a very high thermal conductivity and is generally composed of a casing, a die and a working medium (working medium).
- the heat pipe (thermal conductivity k: k>5000W/mK) has become a major choice for mobile terminal devices to meet the high heat chip solution. Because the heat of the mobile terminal device is not constant, but varies according to the application of the mobile terminal device, and the range of the change is relatively large, so the difference between the high power consumption and the low power consumption of the mobile terminal device is relatively small. In large cases, it is difficult to achieve a good heat dissipation effect considering that a heat pipe is difficult to be compatible with the low-power area of the mobile terminal device and the heat dissipation of high power consumption.
- the heat pipe with the maximum heat flux Qmax - HP > 8W needs to be used for heat dissipation.
- HP's full name is Heat pipe; however, when users use mobile terminals daily, the power consumption (Qnormal-DP) is generally Qnormal-DP ⁇ 3W, and the corresponding heat pipe can be used to dissipate heat by Qmax-HP > 3W. Therefore, if a heat pipe is used and the gap between the high power consumption and the low power consumption of the mobile terminal device is large, a heat pipe generally cannot achieve a good heat dissipation effect.
- the maximum heat transfer capacity (Qmax-HP) of the heat pipe will be different considering the characteristics of the heat pipe.
- the characteristics of the heat pipe include the size, diameter, length, and the like of the heat pipe.
- the corresponding Qmax-HP is a fixed value.
- the heat pipe works in the best working area (when the thermal resistance is lowest), its heat conduction performance is the best.
- the thermal resistance value is large because the heat pipe is not fully started.
- the heat exchanger can't replenish the demand of the heating zone in time, causing the heat pipe to burn out and the temperature of the heating component (such as CPU or GPU) to rise continuously.
- the heat generating component mentioned in the embodiment of the present invention refers to an element which radiates heat to the surroundings during operation.
- the most common CPU and GPU in electronic devices The most common CPU and GPU in electronic devices.
- the heat generating elements mentioned in the embodiments of the present invention are not limited to the two elements of the CPU and the GPU.
- the embodiment of the present invention provides an electronic device, and the electronic device is provided in consideration of the above-mentioned characteristics and problems in the heat dissipation of the electronic device by using a heat pipe.
- the heating element is disposed on the circuit board PCB;
- the heat pipe group includes at least two heat pipes, the heat pipe group is located on the heat generating component, and at least one characteristic parameter of each heat pipe in the heat pipe group is different from each other, and the heat pipe group of the heat pipe group is the most The working area is different; wherein, when the heat pipes in the heat pipe group work in the corresponding optimal working area, the heat resistance of at least two heat pipes in the heat pipe group ranges from 0.05 to: rc/w.
- the characteristic parameters may be: the diameter of the heat pipe, the sectional area of the capillary layer, the working mass (ie, the filling amount of the working medium), the type of the working medium, and the pipe of the heat pipe (in the embodiment of the invention, the pipe of the heat pipe may be copper or aluminum) And at least one or more of the tube thicknesses of the heat pipes of the same pipe.
- the optimal working area may mean that when the power consumption of the heat generating component is large (for example, the power consumption is about 10 W or more), a heat pipe in the heat pipe group dissipates the heat generating component, in which case The heat resistance of a heat pipe is relatively low or the lowest, and the thermal resistance of one heat pipe is relatively low or the lowest is compared with the heat resistance of the heat pipe in other cases for heat dissipation of the heat generating component; When the power consumption is low (for example, the power consumption is about 2 ⁇ 3w), another heat pipe in the heat pipe group dissipates the heat generating component. In this case, the heat resistance of the other heat pipe is lower or lowest.
- the lower or lower thermal resistance of the other heat pipe is compared with the thermal resistance of the heat pipe in other cases for heat dissipation of the heat generating component.
- Each heat pipe in the heat pipe group dissipates the heat generating component when the heat resistance is relatively low or lowest, that is, the heat pipes in the heat pipe group work in the corresponding optimal working area.
- a corresponding heat pipe group is disposed on the same heat generating component, and the heat pipe group includes at least two heat pipes, and
- the optimal working area of each heat pipe is different; that is, the maximum heat transfer amount of each heat pipe will be different, so the heat pipes of different characteristic parameters can be heat-dissipated for different working states of the heat generating component.
- Embodiment 1 Embodiment 1
- an embodiment of the present application provides an electronic device, including: a heating element, the heating element is disposed on a circuit board PCB; a heat pipe group, the heat pipe group includes at least two heat pipes, the heat pipe group is located on the heat generating component, and at least one characteristic parameter of each heat pipe in the heat pipe group is different from each other, and each heat pipe of the heat pipe group is optimal The working area is different.
- the heat resistance of at least two heat pipes in the heat pipe group ranges from 0.05 to 1 ° C/W.
- the heat resistance of the heat pipe when the heat pipe works in the optimal working area, may be rc/w (degrees Celsius/watt). In a specific application, when the heat pipe works in the optimal working area, the heat pipe The thermal resistance is generally in the range of 0.05 ⁇ 1 °C/W (Celsius/Watt).
- the characteristic parameter may be: a pipe diameter of the heat pipe, a cross-sectional area of the capillary layer, a working mass (ie, a filling amount of the working medium), a type of the working medium, and a pipe of the heat pipe (the heat pipe in the embodiment of the invention)
- the pipe may be one or more of the thickness of the heat pipe of copper or aluminum) and the same pipe, because by changing the characteristic parameters of the heat pipe, the optimal working area of the heat pipe or the maximum heat transfer amount will change accordingly, so Setting the characteristic parameters of each heat pipe in the heat pipe group to different values may make the optimal working areas of the heat pipes in the heat pipe group not coincide, so that the heat pipes in the heat pipe group are respectively in the optimal working area under different power consumption. It can meet the requirements of heat conduction in different scenarios of heating elements.
- the heat pipe group may include a plurality of heat pipes, and the optimal working areas of the heat pipes are different. Because the characteristic parameters of the heat pipe determine the optimal working area of the heat pipe, and the characteristic parameters of the optimal working area of the heat pipe are determined to be various, and changing any one of the characteristic parameters can change the optimal working area of the heat pipe, so the present invention is implemented. In the example, the characteristic parameters of the heat pipes are different from each other, so that the optimal working areas of the heat pipes are different. In order to explain the solution provided by the embodiment of the present invention in more detail, the following describes the solutions of the embodiments of the present invention for three common characteristic parameters: the heat pipe diameter, the parameter capillary layer cross-sectional area, the work quality and the working medium type.
- the implementation method includes: the implementation of the heat pipe group may also include a plurality of heat pipes, for example, three heat pipes or four heat pipes, wherein, in the first mode, the characteristic parameter of the heat pipe diameter in the characteristic parameter is changed, the embodiment of the present invention corresponds to
- the implementation is as follows (the specific structure is shown in Figure 1): The diameters of the first heat pipe 101 and the second heat pipe 102 are different in the two heat pipes, wherein the first heat pipe is the same as the other heat pipe except the pipe diameter of the second heat pipe. The pipe diameter is larger than the pipe diameter of the second heat pipe.
- the first heat pipe is a high temperature high efficiency heat pipe
- the second heat pipe is a low temperature high efficiency heat pipe.
- the high temperature heat pipe is a large diameter heat pipe
- the low temperature heat pipe is a small diameter heat pipe
- the heat pipe diameter is different (normal parameter design).
- the optimal working area or heat transfer size, the use of heat pipes with different pipe diameters can ensure that the best working areas of the two heat pipes do not coincide, so as to meet the heat conduction of heating elements (such as: CPU and / or GPU) in different scenarios. Claim.
- the characteristic parameter of the cross-sectional area of the capillary layer of the heat pipe in the characteristic parameter is changed, and the corresponding implementation manner of the embodiment of the present invention is (the specific structure is shown in FIG. 2):
- the cross-sectional area of the capillary layer of the first heat pipe 201 and the second heat pipe 202 in the two heat pipes is different.
- the first heat pipe and the second heat pipe are the same as the cross-sectional area of the capillary layer of the heat pipe
- the first The capillary layer cross-sectional area of a heat pipe 201 is larger than the capillary layer cross-sectional area of the second heat pipe 202.
- the first heat pipe 201 is a high temperature high efficiency heat pipe; and the second heat pipe 202 is a low temperature high efficiency heat pipe.
- the cross-sectional area of different capillary layers will affect the heat transfer capacity of the heat pipe.
- the cross-sectional area of the capillary layer of the low-temperature high-efficiency heat pipe is smaller than that of the high-temperature heat pipe.
- the capillary structure may be a copper powder structure, a mesh structure, a fiber structure or a groove structure.
- the low-temperature high-efficiency heat pipe has a low heat transfer rate, so when the heat-generating component (which can be a CPU and/or a GPU) consumes less power (the power consumption is about 2 ⁇ 3w), the low-temperature efficient heat pipe starts up completely and works at the best work. Zone, effective for heat dissipation of low-power heating components.
- the heat-generating component which can be a CPU and/or a GPU
- the power consumption is about 2 ⁇ 3w
- the heating element CPU and / or GPU
- power consumption is about 10w or more
- the high-temperature and high-efficiency heat pipe is fully activated, and the high-temperature and high-efficiency heat pipe works in the optimal working area; The effect of component heat dissipation.
- the third embodiment is to change the characteristic parameter of the quality parameter in the characteristic parameter, and the corresponding implementation manner of the embodiment of the present invention is:
- the working quality of the first heat pipe and the second heat pipe are different in the two heat pipes.
- the quality of the first heat pipe is injected. Equal to the actual capillary demand, the quality of the second heat pipe injection is lower than the actual capillary demand.
- the first heat pipe is a high temperature high efficiency heat pipe; and the second heat pipe is a low temperature high efficiency heat pipe.
- the optimal working area of the low temperature efficient and high temperature efficient heat pipes do not coincide.
- the first heat pipe is filled with the work mass equal to the actual capillary demand, so that the optimal working area of the first heat pipe moves to a larger power consumption, thereby achieving full working of the first heat pipe working medium under the large power consumption of the heat generating component.
- the second heat pipe is used as the low-temperature high-efficiency heat pipe to inject the work quality smaller than the actual capillary demand of the heat pipe, and keeps the optimal working area of the second heat pipe to move to a smaller power consumption, thereby realizing the heating element
- the working fluid of the second heat pipe is fully operated under a small power consumption. Therefore, the high-temperature and high-efficiency heat pipe can transfer heat under the large power consumption, and the low-temperature and high-efficiency heat pipe can fully start the heat transfer under the small power consumption. It is ensured that the heat generating components (CPU and / or GPU) can meet the heat conduction requirements under different working scenarios (different power consumption states of the heating elements).
- the characteristic parameter of the working medium type of the heat pipe in the characteristic parameter is changed, and the corresponding implementation manner of the embodiment of the present invention is:
- the working medium of the first heat pipe and the second heat pipe are different in the two heat pipes.
- the first heat pipe and the second heat pipe are the same as the latent heat of the heat pipe, the working conditions of the first heat pipe are the same.
- the latent heat is greater than the latent heat of the working medium of the second heat pipe.
- the first heat pipe is a high temperature high efficiency heat pipe; and the second heat pipe is a low temperature high efficiency heat pipe.
- the heat transfer capacity of the heat pipe is related to the latent heat of the working medium.
- the types of the working materials of the first heat pipe and the second heat pipe are different in the two heat pipes, wherein the low temperature high efficiency heat pipe is added with less latent heat.
- the working medium is decyl alcohol, R134A, acetone, etc., while the high-temperature and high-efficiency heat pipe is added with a latent heat such as water, so that the two heat pipes have different heat transfer capacities.
- a heating element such as a CPU or GPU
- a heat pipe filled with a low-latency heat medium ie, a low-temperature heat pipe
- a high-latency heat such as water.
- the quality heat pipe ie high temperature and high efficiency heat pipe
- the heating element is in a high-power working environment, it is filled with a high-latency heat medium heat pipe (ie, a high-temperature heat-efficient heat pipe) such as water to start the work completely. It ensures that the heating elements meet the heat transfer requirements in different working scenarios (different power consumption states of the heating elements).
- Each of the above heat pipes is designed to separately describe the influence of one characteristic parameter of the heat pipe on the optimal working area of the heat pipe, but in actual applications, multiple characteristic parameters of each heat pipe in the heat pipe group can be set to be different.
- the value of each heat pipe in the heat pipe group corresponds to the optimum working area.
- the solution provided by the embodiment of the present invention is further described below with reference to specific examples, and specifically includes: a plurality of heat pipes may be included, and the plurality of heat pipes are implemented in the same manner as the two heat pipes. If the heat pipe has changed the characteristic parameter of the pipe diameter, the optimal working area of the two heat pipes is different.
- the high-temperature high-efficiency heat pipe is a large-diameter heat pipe, and the low-temperature high-efficiency heat pipe is a small-diameter heat pipe, but based on actual needs, it is also required.
- the corresponding implementation can also be:
- the cross-sectional area of the capillary layer of the first heat pipe and the second heat pipe in the heat pipe group is different: generally, the heat transfer capacity of the heat pipe decreases with the decrease of the diameter, and the main reason is that the capillary layer is designed inside the heat pipe.
- the cross-sectional area is different. Therefore, the heat pipe with smaller diameter is designed as the low-temperature high-efficiency heat pipe, and the larger diameter heat pipe is used as the high-temperature high-efficiency heat pipe, and the optimal working area of the two heat pipes can be completely different.
- the cross-sectional area of the capillary layer of the low-temperature high-efficiency heat pipe can be further reduced, and the low-temperature efficient
- the optimal working area of the heat pipe moves to a smaller power consumption, which can further ensure that the optimal working areas of the two heat pipes do not coincide, thereby realizing the heat conduction requirement of the heating element (which may be a CPU or a GPU) in different power consumption scenarios.
- the quality of the first heat pipe and the second heat pipe in the heat pipe group are different: on the basis of different pipe diameters, the quality of the low-temperature high-efficiency heat pipe is reduced (it is also possible to increase the high-temperature and high-efficiency work quality at the same time, or not).
- the optimal working area of the two heat pipes can be further opened on the basis of changing the pipe diameter, thereby realizing the heat conduction requirement of the heating element in different scenarios.
- the first heat pipe and the second heat pipe are heat pipes of different diameters, and the low-temperature high-efficiency heat pipe is designed to have a smaller cross-sectional area of the capillary layer (less than the normal cross-sectional area), further adding a low-latency heat working medium, and the work quality is smaller than the normal design.
- the quantity enables the low-temperature high-efficiency heat pipe to reach the optimal working area under the smaller power consumption of the heating element. Therefore, it can be ensured that the optimal working areas of the two different diameter heat pipes are completely non-coincident, so that the heat pipe group can meet the heat conduction requirement of the heat dissipation temperature of the heating element.
- a thermal interface material is provided between the heat pipe group and the heat generating component.
- the heat pipe group is disposed as a whole on any of the heat generating components, and in the specific use, at least two heat pipes in the heat pipe group may be fixed to the heat generating component by a certain fixing component; in addition, in this embodiment, Since each heat pipe works independently, the at least two heat pipes may exist independently, but the heat pipes of different characteristic parameters may be disposed on the same heating element when the heat pipe group is disposed.
- an embodiment of the present invention further provides an electronic device including a heating element 301, and the heating element 301 is disposed on a circuit board PCB.
- the electronic device further includes:
- the heat pipe 302 includes at least two independent heat conduction channels 302a, wherein the heat pipes are located on the heat generating component, and at least one characteristic parameter of each heat conduction channel 302a in the heat pipe is different from each other, and each heat conduction in the heat pipe
- the optimal working area of the channel 302a is different.
- the thermal resistance of each heat conducting channel 302a of the heat pipe ranges from 0.05 to 1 ° C/W. .
- the characteristic parameter may be: a diameter of a heat conduction channel, a heat conduction channel Cross-sectional area of the capillary layer, the quality of the heat-conducting channel, the type of the heat-transfer channel, the tube of the heat-conducting channel
- the tube of the heat pipe may be copper or aluminum
- one or more of the thickness of the heat-conducting channel because by changing the characteristic parameters of the heat pipe, the optimal working area of the heat pipe or the maximum heat transfer amount
- the size will change accordingly, so the characteristic parameters of the heat conduction channels in the heat pipe can be set to different values, so that the optimal working areas of the heat conduction channels in the heat pipe do not overlap, so that the heat conduction channels in the heat pipe are different in the heating elements.
- the power consumption is in the optimal working area, which can meet the heat conduction requirements of different heating elements.
- At least one or more of the diameter, the capillary layer cross-sectional area, the working substance type, and the work quality of the at least two independent heat conduction channels are different.
- the heat pipe includes a plurality of heat conduction channels of different working areas, so that the heat pipe provided by the embodiment of the present invention is covered by the optimal working area of the heat pipe with respect to the heat pipe having only one hot channel.
- the scope is about doubled. Therefore, by using the heat pipe provided by the embodiment of the present invention to dissipate heat from any of the heat generating components, the heat dissipation requirement of the different power consumption of the heat generating component can be maximized.
- a thermal interface material is provided between the heat pipe group and the heat generating component.
- an embodiment of the present invention further provides an electronic device including a heating element 401, and the heating element is disposed on a circuit board PCB, the electronic device further includes a first heat pipe 402 and a second heat pipe.
- 403 :
- the first heat pipe 402 and the heat generating component 401 are disposed on the same side of the PCB, and the first heat pipe 402 is connected to the heat generating component 401;
- the second heat pipe 403 is disposed at a second position of the PCB, and the second heat pipe is connected to the heat generating component through a heat conductive metal, wherein the heat generating component is disposed on a back surface of the second position of the PCB 401 ;
- the characteristic parameters of the first heat pipe 402 and the second heat pipe 403 are different.
- the first heat pipe 402 is different from the optimal working area of the second heat pipe 403.
- the first heat pipe 402 and the second heat pipe 403 are operated in the corresponding optimal working area, the first heat pipe 402 and the The thermal resistance of the second heat pipe 403 ranges from 0.05 to TC/W.
- the specific implementation manner of the first heat pipe 402 connected to the heat generating component 401 includes a plurality of types, and two alternative modes are provided below:
- the first heat pipe 402 is located on the heating element 401, and a thermal interface material is disposed between the first heat pipe and the heat generating component;
- the first heat pipe 402 is connected to the heat generating component 401 through the heat conducting metal, wherein the heat conducting metal is the PCB copper layer.
- placing the heat pipe on the side of the heat generating component also minimizes the effect of the heat pipe on the thickness of the electronic device.
- the first heat pipe 402 may be a low temperature high efficiency heat pipe; and the second heat pipe 403 may be a high temperature high efficiency heat pipe.
- the characteristic parameters are: the diameter of the heat pipe, the cross-sectional area of the capillary layer of the heat pipe, the working mass of the heat pipe, the type of the working medium of the heat pipe, and the pipe of the heat pipe (in the embodiment of the present invention, the pipe of the heat pipe may be copper) Or aluminum) and one or more of the tube thicknesses of the heat pipes of the same tube.
- the setting of the high-temperature heat-efficiency heat pipe and the low-temperature high-efficiency heat pipe characteristic parameter in the foregoing embodiment 2 and the third embodiment is the same as that in the first embodiment.
- a corresponding heat pipe group is disposed on the same heating element, and the heat pipe group includes at least two heat pipes, and the optimal working areas of the heat pipes are different; that is, the maximum heat transfer amount of each heat pipe It will be different, so the heat pipes with different characteristic parameters can be heat-dissipated for different working states of the heating elements. Therefore, the technical problem of poor heat dissipation performance of the electronic device in the prior art is solved, and the heat dissipation performance of the electronic device is improved.
- a heat pipe in the heat pipe group is activated to dissipate heat from the heating element.
- the heat pipe is called a high-temperature high-efficiency heat pipe, and the high temperature may refer to a heat pipe that dissipates heat as a heat-generating component.
- High efficiency which can mean that the heat pipe can efficiently dissipate heat from the heating element when the power consumption of the heating element is large.
- the power consumption of the heating element is low (for example, the power consumption is about 2 ⁇ 3w)
- another heat pipe in the heat pipe group is activated to dissipate the heat generating component. In this case, the other heat pipe is called low temperature.
- High-efficiency heat pipe wherein the low temperature can refer to the low power consumption of the heating element, and the other heat pipe is the heat-dissipating component of the heat-generating component, which is high-efficiency, and can mean that the heat-generating component can efficiently dissipate heat when the power consumption of the heating component is low.
- the solution provided by the embodiment of the invention avoids the problem of high thermal resistance and poor heat transfer performance of the high-power heat pipe in low-power applications; and avoids burning of the low-power heat pipe in high-power applications.
- the dry phenomenon causes the heat pipe to fail and the heat transfer capability is poor.
- the electronic device can be various electronic devices such as a mobile phone, a tablet computer, and a game machine.
- the combined heat pipe provided by the embodiment of the invention can be flexibly arranged according to the compact layout of the mobile phone product, and meets the requirements of compact size and PCB layout limitation, and reduces design constraints, especially the performance of low temperature and high efficiency heat pipe.
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- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
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- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
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Abstract
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Priority Applications (8)
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CN201480001490.5A CN104488371B (zh) | 2014-06-04 | 2014-06-04 | 一种电子设备 |
JP2016566282A JP6486965B2 (ja) | 2014-06-04 | 2014-06-04 | 電子デバイス |
PCT/CN2014/079149 WO2015184603A1 (zh) | 2014-06-04 | 2014-06-04 | 一种电子设备 |
US15/311,927 US10409340B2 (en) | 2014-06-04 | 2014-06-04 | Electronic device |
EP14894059.6A EP3131376B1 (en) | 2014-06-04 | 2014-06-04 | Electronic device |
CN201710762882.9A CN107613724B (zh) | 2014-06-04 | 2014-06-04 | 一种电子设备 |
US16/529,075 US11144101B2 (en) | 2014-06-04 | 2019-08-01 | Electronic device |
US17/474,564 US11789504B2 (en) | 2014-06-04 | 2021-09-14 | Electronic device |
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PCT/CN2014/079149 WO2015184603A1 (zh) | 2014-06-04 | 2014-06-04 | 一种电子设备 |
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US15/311,927 A-371-Of-International US10409340B2 (en) | 2014-06-04 | 2014-06-04 | Electronic device |
US16/529,075 Continuation US11144101B2 (en) | 2014-06-04 | 2019-08-01 | Electronic device |
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WO2015184603A1 true WO2015184603A1 (zh) | 2015-12-10 |
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EP (1) | EP3131376B1 (zh) |
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CN104488371B (zh) * | 2014-06-04 | 2017-11-17 | 华为技术有限公司 | 一种电子设备 |
CN104866047A (zh) * | 2015-05-29 | 2015-08-26 | 广东欧珀移动通信有限公司 | 一种cpu散热结构和终端 |
CN107144160B (zh) * | 2017-04-19 | 2019-10-18 | 北京空间飞行器总体设计部 | 一种工作于160k至220k温区的双回路深冷环路热管 |
CN212673920U (zh) * | 2017-12-28 | 2021-03-09 | 古河电气工业株式会社 | 散热器 |
JP7161343B2 (ja) * | 2018-08-27 | 2022-10-26 | 新光電気工業株式会社 | 冷却器 |
JP7216894B2 (ja) * | 2019-03-25 | 2023-02-02 | カシオ計算機株式会社 | 電子装置及び投影装置 |
CN113544868A (zh) * | 2019-07-09 | 2021-10-22 | 茹利亚诺·安弗洛尔 | 一种晶体管和音频驱动器与散热器之间的改进热耦合 |
US11249264B2 (en) * | 2020-07-02 | 2022-02-15 | Google Llc | Thermal optimizations for OSFP optical transceiver modules |
US20210059073A1 (en) * | 2020-11-05 | 2021-02-25 | Intel Corporation | Heterogeneous heat pipes |
US11356542B2 (en) | 2020-11-11 | 2022-06-07 | Frore Systems Inc. | Mobile device having a high coefficient of thermal spreading |
CN112612350A (zh) * | 2020-12-25 | 2021-04-06 | 苏州浪潮智能科技有限公司 | 一种服务器散热系统和方法 |
US11782281B2 (en) | 2021-07-30 | 2023-10-10 | Meta Platforms Technologies, Llc | Thermal management system for electronic device |
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US11789504B2 (en) | 2023-10-17 |
JP6486965B2 (ja) | 2019-03-20 |
CN107613724A (zh) | 2018-01-19 |
EP3131376A4 (en) | 2017-04-26 |
CN107613724B (zh) | 2020-04-28 |
EP3131376B1 (en) | 2021-08-04 |
EP3131376A1 (en) | 2017-02-15 |
CN104488371A (zh) | 2015-04-01 |
JP2017520106A (ja) | 2017-07-20 |
CN104488371B (zh) | 2017-11-17 |
US20220004235A1 (en) | 2022-01-06 |
US20170102745A1 (en) | 2017-04-13 |
US20190354147A1 (en) | 2019-11-21 |
US11144101B2 (en) | 2021-10-12 |
US10409340B2 (en) | 2019-09-10 |
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