TW202147971A - Casing structure with functionality of effective thermal management - Google Patents

Abstract

A casing structure with functionality of effective thermal management is disclosed, which consists of a casing member, a low thermal conductivity medium, a second heat spreader, and a first heat spreader. When a user operates the electronic device, heat generated from CPU and/or GPU is transferred to the second heat spreader via the first heat spreader, and then is two-dimensionally spread in the second heat spreader. Consequently, the heat is dissipated away from the casing member to air due to the outstanding thermal radiation ability of the casing member. The low thermal conductivity medium is adopted for controlling a heat transfer of heat transferring paths from the heat source and ends to the casing member. By applying the casing structure in an electronic device by a form of a top casing and/or a back casing, an outer surface temperature of the casing member can be well controlled.

Description

Chassis structure with efficient thermal management

The present invention relates to the related technical field of heat dissipation management of electronic devices, and more particularly, to a casing structure with efficient thermal management function and an electronic device having the casing structure.

With the rapid development of technology, various mobile electronic devices have become indispensable electronic products for people's life and work, including: notebook computers, tablet computers, smart phones, and wearable electronic devices. FIG. 1 is a perspective view of a conventional notebook computer, and FIG. 2 is an exploded view of some components of the conventional notebook computer. As shown in FIG. 1 and FIG. 2, the casing structure of the conventional notebook computer 1' includes a display casing and a main body casing. Wherein, the display case includes a back cover 1A' and a front panel 1B', and the host case includes a bottom cover 1D' and an upper cover 1C'. It should be noted that the back cover 1A', the front panel 1B', the upper cover 1C', and the bottom cover 1D' are commonly referred to as A cover, B cover, C cover, and D cover in the industry.

As shown in Figures 1 and 2, the motherboard 10' provided with the CPU 101' and the GPU 102' is accommodated in a accommodating space 1C1' of the upper cover 1C' together with the lithium battery 11'. It should be known that the CPU 101', the GPU 102', the lithium battery 11', and the hard disk (not shown) are the main heat sources in the host casing. Therefore, the thermal solution adopted in the prior art is to correspondingly set a set of cooling fans 12' above the CPU 101' and the GPU 102'. Further, some heat-dissipating mechanisms, such as heat pipes and/or heat-dissipating blocks, will be added in the accommodating space 1C1' of the upper cover 1C'. The aforementioned conventional thermal solutions can conduct the heat flow of each of the heat sources to the bottom cover 1D', and then radiate the heat flow into the air through the bottom cover 1D'. On the other hand, opening a plurality of heat dissipation holes 1D1' at corresponding positions of the bottom cover 1D' also helps the heat dissipation fan 12' to utilize the airflow to discharge the heat flow into the air.

It must be known that the operating temperature of CPU 101' and GPU 102' is usually above 70°C. Therefore, when the user places the notebook computer 1 ′ on his lap, it is unavoidable that the high temperature heat flow generated by the CPU 101 ′ and the GPU 102 ′ under high load will pass through the bottom cover 1D ′ to the user. injury to the thigh. In view of this, US Patent No. US8526179 proposes a notebook computer case with thermal insulation design. Referring to the notebook computer 1 ′ of FIGS. 1 and 2 , US Pat. No. 8,526,179 utilizes a method of connecting a heat shield to an outer surface of the bottom cover 1D ′ to make the high temperature generated by the CPU 101 ′ and the GPU 102 ′ under high load The heat flow is not directly conducted to the user's thigh through the bottom cover ID'. Simply put, the heat shield provides thermal isolation between the bottom cover ID' and the user's thigh.

Unfortunately, practical experience shows that although the heat shield provides thermal isolation between the bottom cover 1D' and the user's thighs, it also provides thermal isolation between the bottom cover 1D' and the air, which leads to The significant reduction in the heat dissipation efficiency of the conventional thermal solutions prevents the heat flow of the heat source from being effectively discharged into the air from the host casing.

As can be seen from the above description, the conventional thermal solutions used in mobile electronic devices still have room for improvement. In view of this, the inventor of the present case has made great efforts to research and invent, and finally developed a casing structure with efficient thermal management function of the present invention.

The main purpose of the present invention is to provide a casing structure with efficient thermal management function, which is applied to an electronic device as a casing member and a cover member, mainly comprising: a casing member, a low thermal conductivity medium, a second heat spreader, and a first heat spreader. When the user operates the electronic device, the heat flow generated by the heat source (such as CPU, GPU) is transferred from the first heat-spreading member to the second heat-spreading member, so as to be further distributed in the two-dimensional heat transfer mode. In the second heat spreader, this design can effectively manage the temperature of heat sources (eg, CPU, GPU). According to the design of the low thermal conductivity medium of the present invention, it can be used to slow down a heat transfer rate of the heat flow from the second heat equalizing member to the shell member, and finally through the excellent heat radiation heat dissipation capability of the shell member, the During the process of dissipating the heat flow from the outer surface of the shell to the air by means of radiation heat dissipation, it can prevent the skin temperature of one of the shells from being too high.

It should be noted that, because the shell has excellent heat radiation and heat dissipation capability, when the shell dissipates heat, the heat flow is uniformly dissipated into the air by heat radiation in a large area. Such a design can not only achieve effective thermal management of heat sources (such as CPU, GPU) inside the electronic device (such as a notebook computer), but also effectively control the outer surface temperature (such as the D cover of a notebook computer) of the shell ( skin temperature). Therefore, for the user, when using the electronic device related to the present invention, the high-temperature heat flow generated by the CPU and GPU will pass through the casing of the electronic device, and the heat flow will be dissipated to the air evenly by heat radiation. middle. More importantly, the surface temperature of the shell is effectively controlled without causing any discomfort to the user.

Therefore, in order to achieve the above object, the present invention proposes a first embodiment of the casing structure with efficient thermal management function, which is applied to an electronic device to process a heat source, including: at least one first heat equalizing element, disposed above the heat source; A second heat-spreading element is disposed above the first heat-spreading element, wherein the heat flow generated by the heat source is transferred from the first heat-spreading element to the second heat-spreading element, thereby further transferring heat in two dimensions distributed in the second heat soaking member; a low thermal conductivity medium disposed above the second heat spreader; and A shell is arranged above the low thermal conductivity medium; Wherein, the low thermal conductivity medium is used to slow down a heat transfer rate of the heat flow from the second heat equalizing member to the shell member, so that the shell member can effectively dissipate the heat flow in the process of heat radiation. The skin temperature of one of the shells.

In order to achieve the above object, the present invention also proposes a second embodiment of the casing structure with efficient thermal management function, which is applied to an electronic device to process a heat source, including: at least one first heat equalizing element, disposed above the heat source; A second heat-spreading element is disposed above the first heat-spreading element, wherein the heat flow generated by the heat source is transferred from the first heat-spreading element to the second heat-spreading element, thereby further transferring heat in two dimensions distributed in the second heat soaking member; a low thermal conductivity medium disposed above the second heat equalizing member; a shell disposed above the low thermal conductivity medium; and an elastic pressing unit embedded in a side of the casing facing the low thermal conductivity medium and the second heat equalizing member; Wherein, the elastic pressing unit includes a low thermal conductivity layer, and the low thermal conductivity layer and the low thermal conductivity medium are used to slow down a heat transfer rate of the heat flow from the second heat equalizing member to the shell member, so that the shell The skin temperature of one of the shells can be effectively controlled during the process of dissipating the heat flow by the heat radiation.

In order to achieve the above object, the present invention further proposes a third embodiment of the casing structure with efficient thermal management function, which is applied to an electronic device to process a heat source, including: at least one first heat equalizing element, disposed above the heat source; A second heat-spreading element is disposed above the first heat-spreading element, wherein the heat flow generated by the heat source is transferred from the first heat-spreading element to the second heat-spreading element, thereby further transferring heat in two dimensions distributed in the second heat soaking member; a low thermal conductivity medium disposed above the second heat equalizing member; A shell is disposed above the low thermal conductivity medium; wherein, the shell has a honeycomb structure corresponding to the top of the heat source, and when the shell is disposed above the low thermal conductivity medium, the honeycomb structure contacts the low thermal conductivity a thermally conductive medium such that a plurality of air gaps are formed between the honeycomb structure and the low thermally conductive medium; and an elastic pressing unit embedded in a side of the casing facing the low thermal conductivity medium and the second heat equalizing member; Wherein, the elastic pressing unit includes a low thermal conductivity layer, and the low thermal conductivity layer and the low thermal conductivity medium are used to slow down a heat transfer rate of the heat flow from the second heat equalizing member to the shell member, so that the shell The skin temperature of one of the shells can be effectively controlled during the process of dissipating the heat flow by the heat radiation.

In order to more clearly describe a casing structure with efficient thermal management function proposed by the present invention, the preferred embodiments of the present invention will be described in detail below with reference to the drawings.

first embodiment

3 shows a perspective view of an electronic device including a case structure with efficient thermal management function of the present invention, and FIG. 4 shows another perspective view of the electronic device including the case structure with efficient thermal management function of the present invention Stereogram. The casing structure 1 with efficient thermal management function of the present invention is applied to an electronic device as a cover or a casing. For example, as shown in FIG. 3 and FIG. 4 , the electronic device may be a notebook computer 2 , and its casing structure includes a display casing and a host casing. The display case includes a back cover 2A and a front panel 2B, and the host case includes a bottom cover 2D and an upper cover 2C. In addition, the motherboard 20 provided with the CPU 201 and the GPU 202 is accommodated in a accommodating space 2C1 of the upper cover 2C together with the lithium battery 21 . It should be known that the CPU 201 , the GPU 202 , the lithium battery 21 , and the hard disk (not shown) are the main heat sources in the main body casing of the notebook computer 2 .

In the first embodiment, the basic structure of the casing structure 1 with efficient thermal management function of the present invention includes: a casing member 11 made of a metal material, a low thermal conductivity medium 12 , and a second heat equalizing member 13 . , and at least one first heat spreader 15 . The low thermal conductivity medium 12 is connected to an inner surface of the casing 11 , and the second heat spreader 13 is connected to the low thermal conductivity medium 12 with its first surface 131 . On the other hand, the first heat spreader 15 can be a graphite sheet, a metal heat sink or a ceramic heat sink, and a first side 151 thereof is connected to a second surface 132 of the second heat spreader 13 , and a second side 152 thereof contacts a plurality of heat sources in the electronic device (ie, the notebook computer 2 ). It should be understood that the plurality of heat sources include the CPU 201 , the GPU 202 , the lithium battery 21 , and a hard disk (not shown).

It can be seen from FIG. 3 and FIG. 4 that when applied to the notebook computer 2 , the casing 11 serves as the bottom cover 2D of the notebook computer 2 . Therefore, in a possible embodiment, the casing 11 is made of a non-metal material, such as plastic, carbon fiber, or glass. In another feasible embodiment, the shell 11 can also be made of materials with excellent heat radiation and heat dissipation capabilities, such as magnesium alloys (magnesium-aluminum alloy, magnesium-lithium alloy, magnesium-lithium-aluminum alloy, magnesium-manganese alloy, magnesium alloy Zirconium alloy), aluminum alloy, iron alloy, titanium alloy and other metal materials.

Figure 5 shows a data graph of temperature versus radiative heat dissipation capability for different metal materials. It must be specially explained that the basic composition of magnesium-lithium alloy is Mg-xLi, which belongs to a light alloy, and its alloy density is below 1.6 g/cm ³ . For example, a magnesium-lithium alloy (Mg-12 wt % Li) LZ12 contains: magnesium as a major element, 12 wt % lithium, and trace metal elements such as Zn, Al, Y, or Mn. And, the magnesium-lithium alloy (Mg-12wt%Li-1wt%Zn) LZ121 contains: main elements magnesium, 12wt% lithium, 1wt% zinc, and trace metal elements such as Al, Y or Mn. In more detail, magnesium lithium aluminum alloy (Mg-9wt%Li-3wt%Al-3wt%Zn) LAZ933 contains: major elements magnesium, 9wt% lithium, 3wt% aluminum, 3wt% zinc, and trace metals element. Therefore, according to the measurement data in Figure 5, it can be seen that the magnesium-lithium-aluminum series alloy (LAZ-series alloy) has the best thermal radiation and heat dissipation capability, while the magnesium-lithium series alloy (LZ-series alloy) is second.

Continue to refer to FIGS. 3 and 4 , and also refer to FIGS. 6 and 7 . 6 is a schematic perspective exploded view of the case structure 1 with efficient thermal management function of the present invention, and FIG. 7 is a schematic side sectional view of the case structure 1 with efficient thermal management function of the present invention. In particular, the present invention uses less than or equal to 0.2 W/m. The material with the thermal conductivity of K is used as the low thermal conductivity medium 12, such as: low thermal conductivity pressure sensitive adhesive (Pressure Sensitive Adhesive, PSA), aerogel (Aerogel), Kapton tape, polyimide (PI) tape, or NASBIS Insulation Sheet. On the other hand, in a feasible embodiment, the second heat spreader 13 can be a vapor chamber (Vapor Chamber, VC), a metal thermal ground plane (Metal Thermal Ground Plane, Metal TGP), or a polymer Vapor chamber (Polymer Thermal Ground Plane, Polymer TGP). Engineers familiar with the design and fabrication of thermal solutions should know that a vapor chamber (VC) has excellent two-dimensional thermal diffusion (heat transfer) characteristics. Further, the inner surface of the shell member 11 ( 2D ) is covered with an inner surface treatment layer 11L, which is in contact with the low thermal conductivity medium 12 . In addition, the outer surface of the shell 11 (2D) can also be coated with an outer surface treatment layer 11U at the same time. In a feasible embodiment, both the inner surface treatment layer 11L and the outer surface treatment layer 11U are selected from any one of the group consisting of an anode treatment layer and a ceramic coating layer.

As shown in FIG. 3 , FIG. 4 , FIG. 6 and FIG. 7 , when the user uses the notebook computer 2 normally, the heat flow generated by each of the heat sources will be thermally transferred from the first heat equalizing member 15 to the second heat spreader 2 . The second surface 132 of the second heat-spreading member 13 , so that the heat flow can be uniformly transferred and distributed on the first surface 131 of the second heat-spreading member 132 in a two-dimensional heat transfer manner by utilizing the characteristics of the second heat-spreading member 132 . It should be noted that, according to the design of the present invention, the low thermal conductivity medium 12 is used to slow down a heat transfer rate of the heat flow from the second heat equalizing member 13 to the shell member 11 ( 2D ), so that the shell The skin temperature of the shell 11 (2D) can be effectively controlled during the process of dissipating the heat flow from the shell 11 (2D) by heat radiation. Moreover, the excellent heat radiation and heat dissipation capability of the shell 11 made of LAZ alloy or LZ alloy can dissipate the heat flow from the outer surface of the shell 11 into the air.

Please refer to FIG. 3 , FIG. 4 , FIG. 6 and FIG. 7 repeatedly. It must be noted that the present invention utilizes the design of the low thermal conductivity medium 12 to effectively reduce the surface temperature of the shell 11 ( 2D ). However, the use of the low thermal conductivity medium 12 may cause between the second surface 132 of the second heat spreader 13 and the first side 151 of the first heat spreader 15 and the heat source (ie the CPU 201, The junction temperature between the surface of the GPU 202) and the second side 152 of the first heat spreader 15 is thus increased. Therefore, it must be further considered that, in the case where the plurality of heat sources (CPU201, GPU202) generate heat flux with high heat flux due to high load operation, the increase of the junction temperature will eventually lead to the second heat soaking. Thermal mismatches are generated between the element 13 and the first heat-spreading element 15 and the plurality of heat sources.

Therefore, in order to avoid the occurrence of the aforementioned unfavorable phenomena such as surface temperature increase and thermal mismatch, as shown in FIG. 6 and FIG. 7 , the first side 151 and the Each of the second sides 152 is coated with a thermal grease 14 . In other words, between the second surface 132 of the second heat spreader 13 and the first side 151 of the first heat spreader 15 and between the surfaces of the CPU 201 and GPU 202 and the first heat spreader 15 A layer of thermal paste 14 is inserted between the second sides 152, which can not only adjust the adhesion and fixation between the second heat equalizing member 13, the first heat equalizing member 15, and the plurality of heat sources (CPU 201, GPU 202). mechanism and also avoid thermal mismatch caused by high heat flow. Of course, in other feasible embodiments, other thermal interface materials may also be used as or in place of the thermally conductive paste 14 .

Further, at least one locking member can also be used to tightly lock the second heat equalizing member 13 , the first heat equalizing member 15 and the low thermal conductivity medium 12 on the inner surface of the shell member 11 , and can also be adjusted at the same time. The tightness of the second heat spreader 13 , the first heat spreader 15 , the low thermal conductivity medium 12 and the CPU 201 and/or the GPU 202 to avoid thermal mismatch caused by high heat flow. The locking member can be selected from drilling screws, fasteners and inserts. It is added that the use of low thermal conductivity double-sided tape as the low thermal conductivity medium 12 also helps to adjust the adhesion between the surfaces of the CPU 201 and the GPU 202 and the second surface 132 of the second heat spreader 13 . mechanism, such as Kapton tape (polyimide) with double-sided adhesive layer.

Second Embodiment

8 shows a perspective view of an electronic device including a case structure with an efficient thermal management function of the present invention, and FIG. 9 shows another perspective view of an electronic device including the case structure with an efficient thermal management function of the present invention Stereogram. The casing structure 1 with efficient thermal management function of the present invention is applied to an electronic device as a cover or a casing. For example, as shown in FIG. 8 and FIG. 9 , the electronic device may be a notebook computer 2 , and its casing structure includes a display casing and a host casing. The display case includes a back cover 2A and a front panel 2B, and the host case includes a bottom cover 2D and an upper cover 2C. In addition, the motherboard 20 provided with the CPU 201 and the GPU 202 is accommodated in a accommodating space 2C1 of the upper cover 2C together with the lithium battery 21 . It should be known that the CPU 201 , the GPU 202 , the lithium battery 21 , and the hard disk (not shown) are the main heat sources in the main body casing of the notebook computer 2 .

In the second embodiment, the basic structure of the casing structure 1 with efficient thermal management function of the present invention includes: a casing member 11 made of a metal material, a low thermal conductivity medium 12 , and a second heat equalizing member 13 . , a plurality of first heat equalizing members 15, and an elastic pressing unit including a low thermal conductivity layer P1 and an elastic sheet P2. The low thermal conductivity medium 12 is connected to an inner surface of the casing 11 , and the second heat spreader 13 is connected to the low thermal conductivity medium 12 with its first surface 131 . On the other hand, the plurality of first heat spreaders 15 are a graphite sheet, a metal heat sink or a ceramic heat sink, and a first side 151 thereof is connected to a second surface 132 of the second heat spreader 13 , and a second side 152 thereof contacts a plurality of heat sources in the electronic device (ie, the notebook computer 2 ). It should be understood that the plurality of heat sources include the CPU 201 , the GPU 202 , the lithium battery 21 , and a hard disk (not shown).

As can be seen from FIG. 8 and FIG. 9 , when applied to the notebook computer 2 , the casing 11 serves as the bottom cover 2D of the notebook computer 2 . Therefore, in a possible embodiment, the casing 11 is made of a non-metal material, such as plastic, carbon fiber, or glass. In another feasible embodiment, the shell 11 can also be made of materials with excellent heat radiation and heat dissipation capabilities, such as magnesium alloys (magnesium-aluminum alloy, magnesium-lithium alloy, magnesium-lithium-aluminum alloy, magnesium-manganese alloy, magnesium alloy Zirconium alloy), aluminum alloy, iron alloy, titanium alloy and other metal materials.

Figure 5 shows a data plot of temperature versus radiative capacity for different metallic materials. It must be specially explained that the basic composition of magnesium-lithium alloy is Mg-xLi, which belongs to a light alloy, and its alloy density is below 1.6 g/cm ³ . For example, a magnesium-lithium alloy (Mg-12 wt % Li) LZ12 contains: magnesium as a major element, 12 wt % lithium, and trace metal elements such as Zn, Al, Y, or Mn. And, the magnesium-lithium alloy (Mg-12wt%Li-1wt%Zn) LZ121 contains: main elements magnesium, 12wt% lithium, 1wt% zinc, and trace metal elements such as Al, Y or Mn. In more detail, magnesium lithium aluminum alloy (Mg-9wt%Li-3wt%Al-3wt%Zn) LAZ933 contains: major elements magnesium, 9wt% lithium, 3wt% aluminum, 3wt% zinc, and trace metals element. Therefore, according to the measurement data in Figure 5, it can be seen that the magnesium-lithium-aluminum series alloy (LAZ-series alloy) has the best thermal radiation and heat dissipation capability, while the magnesium-lithium series alloy (LZ-series alloy) is second.

Continue to refer to FIGS. 8 and 9 , and also refer to FIGS. 10 and 11 . 10 is a schematic perspective exploded view of the case structure 1 with efficient thermal management function of the present invention, and FIG. 11 is a schematic side sectional view of the case structure 1 with efficient thermal management function of the present invention. In particular, the present invention uses less than or equal to 0.2 W/m. The material with the thermal conductivity of K is used as the low thermal conductivity medium 12, such as: low thermal conductivity pressure sensitive adhesive (Pressure Sensitive Adhesive, PSA), aerogel (Aerogel), Kapton tape, polyimide (PI) tape, or NASBIS Insulation Sheet. On the other hand, in a feasible embodiment, the second heat spreader 13 can be a vapor chamber (Vapor Chamber, VC), a metal thermal ground plane (Metal Thermal Ground Plane, Metal TGP), or a polymer Vapor chamber (Polymer Thermal Ground Plane, Polymer TGP). Engineers familiar with the design and fabrication of thermal solutions should know that a vapor chamber (VC) has excellent two-dimensional thermal diffusion (heat transfer) characteristics. Further, the inner surface of the shell member 11 ( 2D ) is covered with an inner surface treatment layer 11L, which is in contact with the low thermal conductivity medium 12 . In addition, the outer surface of the shell 11 (2D) can also be coated with an outer surface treatment layer 11U at the same time. In a feasible embodiment, both the inner surface treatment layer 11L and the outer surface treatment layer 11U are selected from any one of the group consisting of an anode treatment layer and a ceramic coating layer.

As shown in FIG. 8 , FIG. 9 , FIG. 10 and FIG. 11 , the first heat equalizing member 15 is disposed above the heat source, the second heat equalizing member 13 is disposed above the first heat equalizing member 15 , and the low thermal conductivity medium 12 The casing 11 ( 2D ) is arranged above the low thermal conductivity medium 12 , and the elastic pressing unit is embedded in the casing 11 ( 2D ) facing the low thermal conductivity medium 12 . with one side of the second heat spreader 13 . With this design, when the user uses the notebook computer 2 normally, the heat flow generated by each of the heat sources will be thermally transferred from the first heat spreader 15 to the second surface 132 of the second heat spreader 13 , thereby The heat flow is uniformly transferred and distributed on the first surface 131 of the second heat spreader 132 in a two-dimensional heat transfer manner by utilizing the characteristics of the second heat spreader 132 . It should be noted that, according to the design of the present invention, the low thermal conductivity layer P1 and the low thermal conductivity medium 12 of the elastic pressing unit are used to slow down the heat flow from the second heat equalizing member 13 to the shell member 11 ( 2D), so that the shell 11 (2D) can effectively control a surface temperature (Skin temperature) of the shell 11 (2D) during the process of dissipating the heat flow by heat radiation. In addition, the shell 11 made of LAZ alloy or LZ alloy has excellent heat radiation and heat dissipation capability, so the heat flow can be dissipated into the air from the outer surface of the shell 11 .

Please refer to FIG. 8 , FIG. 9 , FIG. 10 and FIG. 11 repeatedly. It must be noted that the present invention utilizes the design of the low thermal conductivity medium 12 to effectively reduce the surface temperature of the shell 11 ( 2D ). However, the use of the low thermal conductivity medium 12 may cause between the second surface 132 of the second heat spreader 13 and the first side 151 of the first heat spreader 15 and the heat source (ie the CPU 201, The junction temperature between the surface of the GPU 202) and the second side 152 of the first heat spreader 15 is thus increased. Therefore, it must be further considered that, in the case where the plurality of heat sources (CPU201, GPU202) generate heat flux with high heat flux due to high load operation, the increase of the junction temperature will eventually lead to the second heat soaking. Thermal mismatches are generated between the element 13 and the first heat-spreading element 15 and the plurality of heat sources.

Therefore, in order to avoid the aforementioned unfavorable phenomena such as surface temperature rise and thermal mismatch, as shown in FIG. 10 and FIG. 11 , the first side 151 of the first heat spreader 15 and the Each of the second sides 152 is coated with a thermal grease 14 . In other words, between the second surface 132 of the second heat spreader 13 and the first side 151 of the first heat spreader 15 and between the surfaces of the CPU 201 and GPU 202 and the first heat spreader 15 A layer of thermal paste 14 is inserted between the second sides 152, which can not only adjust the adhesion and fixation between the second heat equalizing member 13, the first heat equalizing member 15, and the plurality of heat sources (CPU 201, GPU 202). mechanism and also avoid thermal mismatch caused by high heat flow. Of course, in other feasible embodiments, other thermal interface materials can also be used as or in place of the thermally conductive paste 14 .

After comparing FIG. 11 and FIG. 7 , it should be understood that the second embodiment is actually obtained by adding an elastic pressing unit to the structure of the aforementioned first embodiment. In other words, in the second embodiment, the basic structure of the casing structure 1 with efficient thermal management function of the present invention includes: a casing 11 made of a metal material, a low thermal conductivity medium 12, a second The heat equalizing element 13, at least one first heat equalizing element 15, and an elastic pressing unit. As shown in FIG. 11 , the elastic pressing unit is embedded in the low thermal conductivity medium 12 or the shell 11 , and includes a low thermal conductivity layer P1 and an elastic sheet P2 , wherein the elastic sheet P2 is provided on the low thermal conductivity layer On top of P1 , and used for embedding the low thermal conductivity medium 12 and/or the shell 11 ( 2D ), so that the low thermal conductivity layer P1 contacts the second heat spreader 13 .

In a feasible embodiment, the low thermal conductivity layer P1 may be, for example, an aerogel (Aerogel) or an air gap (Air gap). The elastic sheet P2 provides a spring-like function, which not only allows the second heat spreader 13, the first heat spreader 15, the thermal paste 14, and the heat source (CPU 201, GPU 202) to be in close contact with each other, but also The close connection effect on the structure is achieved, thereby avoiding the occurrence of thermal mismatch, and ensuring that the outer surface of the casing 11 exerts the best radiation heat dissipation effect.

Further, at least one locking member can also be used to tightly lock the second heat equalizing member 13 , the first heat equalizing member 15 and the low thermal conductivity medium 12 on the inner surface of the shell member 11 , and can also be adjusted at the same time. The tightness of the second heat spreader 13 , the first heat spreader 15 , the low thermal conductivity medium 12 and the CPU 201 and/or the GPU 202 to avoid thermal mismatch caused by high heat flow. The locking member may be selected from a drilling screw, a fastener and/or an inserting member, for example. It is added that the use of low thermal conductivity double-sided tape as the low thermal conductivity medium 12 also helps to adjust the adhesion between the surfaces of the CPU 201 and the GPU 202 and the second surface 132 of the second heat spreader 13 . mechanism, such as Kapton tape (polyimide) with double-sided adhesive layer.

12A and 12B are schematic side cross-sectional views of the case structure with efficient thermal management function of the present invention. In a feasible embodiment, a fixing plate 1P with at least one screw 1P2 can be further disposed between the casing 11 and the low thermal conductivity medium 12 and on the elastic pressing unit (P1, P2). As shown in FIG. 12A , the fixing plate 1P has at least one screw hole 1P1 , so that the at least one screw 1P2 is screwed into the at least one screw hole 1P1 correspondingly. In this way, the elastic pressing unit ( P1 , P2 ) can be more closely combined with the low thermal conductivity medium 12 and the second heat equalizing member 13 by adjusting a drilling depth of the screw 1P2 .

It should be noted that, as shown in FIG. 12B , the at least one screw 1P2 provides a pressure to the elastic pressing units (P1, P2). According to the design of the present invention, by changing an area size of the elastic pressing unit (P1, P2), the downward pressure applied to the elastic pressing unit (P1, P2) and the second soaking can be regulated. unit pressure of piece 13.

Third Embodiment

FIG. 13 shows a perspective view of an electronic device including a case structure with a high-efficiency thermal management function of the present invention, and FIG. 14 shows another perspective view of an electronic device including the case structure with a high-efficiency thermal management function of the present invention Stereogram. The casing structure 1 with efficient thermal management function of the present invention is applied to an electronic device as a casing or a casing. For example, as shown in FIG. 13 and FIG. 14 , the electronic device may be a notebook computer 2 , and its casing structure includes a display casing and a host casing. The display case includes a back cover 2A and a front panel 2B, and the host case includes a bottom cover 2D and an upper cover 2C. In addition, the motherboard 20 provided with the CPU 201 and the GPU 202 is accommodated in a accommodating space 2C1 of the upper cover 2C together with the lithium battery 21 . It should be known that the CPU 201 , the GPU 202 , the lithium battery 21 , and the hard disk (not shown) are the main heat sources in the main body casing of the notebook computer 2 .

In the third embodiment, the basic structure of the casing structure 1 with efficient thermal management function of the present invention includes: a casing member 11 made of a metal material, a low thermal conductivity medium 12 , and a second heat equalizing member 13 . , at least one first heat spreader 15, and at least one honeycomb structure 11HB. The low thermal conductivity medium 12 is connected to an inner surface of the casing 11 , and the second heat spreader 13 is connected to the low thermal conductivity medium 12 with its first surface 131 . On the other hand, the plurality of first heat spreaders 15 are a graphite sheet, a metal heat sink or a ceramic heat sink, and a first side 151 thereof is connected to a second surface 132 of the second heat spreader 13 , and a second side 152 thereof contacts a plurality of heat sources in the electronic device (ie, the notebook computer 2 ). It should be understood that the plurality of heat sources include the CPU 201 , the GPU 202 , the lithium battery 21 , and a hard disk (not shown).

It can be seen from FIG. 13 and FIG. 14 that when applied to the notebook computer 2 , the casing 11 is used as the bottom cover 2D of the notebook computer 2 . Therefore, in a possible embodiment, the casing 11 is made of a non-metal material, such as plastic, carbon fiber, or glass. In another feasible embodiment, the shell 11 can also be made of materials with excellent heat radiation and heat dissipation capabilities, such as magnesium alloys (magnesium-aluminum alloys, magnesium-lithium alloys, magnesium-lithium-aluminum alloys, magnesium-manganese alloys) , magnesium zirconium alloy), aluminum alloy, iron alloy, titanium alloy and other metal materials.

Figure 5 shows a data plot of temperature versus radiative capacity for different metallic materials. It must be specially explained that the basic composition of magnesium-lithium alloy is Mg-xLi, which belongs to a light alloy, and its alloy density is below 1.6 g/cm ³ . For example, a magnesium-lithium alloy (Mg-12 wt % Li) LZ12 contains: magnesium as a major element, 12 wt % lithium, and trace metal elements such as Zn, Al, Y, or Mn. And, the magnesium-lithium alloy (Mg-12wt%Li-1wt%Zn) LZ121 contains: main elements magnesium, 12wt% lithium, 1wt% zinc, and trace metal elements such as Al, Y or Mn. In more detail, magnesium lithium aluminum alloy (Mg-9wt%Li-3wt%Al-3wt%Zn) LAZ933 contains: major elements magnesium, 9wt% lithium, 3wt% aluminum, 3wt% zinc, and trace metals element. Therefore, according to the measurement data in Figure 5, it can be seen that the magnesium-lithium-aluminum series alloy (LAZ-series alloy) has the best thermal radiation and heat dissipation capability, while the magnesium-lithium series alloy (LZ-series alloy) is second.

Continue to refer to FIGS. 13 and 14 , and also refer to FIG. 15 , which is a schematic side cross-sectional view of the case structure 1 with efficient thermal management function of the present invention. In particular, the present invention uses less than or equal to 0.2 W/m. The material with the thermal conductivity of K is used as the low thermal conductivity medium 12, such as: low thermal conductivity pressure sensitive adhesive (Pressure Sensitive Adhesive, PSA), aerogel (Aerogel), Kapton tape, polyimide (PI) tape, or NASBIS Insulation Sheet. On the other hand, in a feasible embodiment, the second heat spreader 13 can be a vapor chamber (Vapor Chamber, VC), a metal thermal ground plane (Metal Thermal Ground Plane, Metal TGP), or a polymer Vapor chamber (Polymer Thermal Ground Plane, Polymer TGP). Engineers familiar with the design and fabrication of thermal solutions should know that a vapor chamber (VC) has excellent two-dimensional thermal diffusion (heat transfer) characteristics. Further, the inner surface of the shell member 11 ( 2D ) is covered with an inner surface treatment layer 11L, which is in contact with the low thermal conductivity medium 12 . In addition, the outer surface of the shell 11 (2D) can also be coated with an outer surface treatment layer 11U at the same time. In a feasible embodiment, both the inner surface treatment layer 11L and the outer surface treatment layer 11U are selected from any one of the group consisting of an anode treatment layer and a ceramic coating layer.

As shown in FIG. 13 , FIG. 14 and FIG. 15 , when the user uses the notebook computer 2 normally, the heat flow generated by each of the heat sources will be transferred from the first heat equalizing member 15 to the second heat equalizing member The second surface 132 of the second heat-spreading member 132 is used to make the heat flow uniformly transfer and distribute on the first surface 131 of the second heat-spreading member 132 in a two-dimensional heat transfer manner. It should be noted that, according to the design of the present invention, the low thermal conductivity medium 12 is used to slow down a heat transfer rate of the heat flow from the second heat equalizing member 13 to the shell member 11 ( 2D ), so that the shell The skin temperature of the shell 11 (2D) can be effectively controlled during the process of dissipating the heat flow from the shell 11 (2D) by heat radiation. In addition, the shell 11 made of LAZ alloy or LZ alloy has excellent heat radiation and heat dissipation capability, so the heat flow can be dissipated into the air from the outer surface of the shell 11 .

Please refer to Figure 13, Figure 14 and Figure 15 repeatedly. It must be noted that the present invention utilizes the design of the low thermal conductivity medium 12 to effectively reduce the surface temperature of the shell 11 ( 2D ). However, the use of the low thermal conductivity medium 12 may cause between the second surface 132 of the second heat spreader 13 and the first side 151 of the first heat spreader 15 and the heat source (ie the CPU 201, The junction temperature between the surface of the GPU 202) and the second side 152 of the first heat spreader 15 is thus increased. Therefore, it must be further considered that, in the case where the plurality of heat sources (CPU201, GPU202) generate heat flux with high heat flux due to high load operation, the increase of the junction temperature will eventually lead to the second heat soaking. Thermal mismatches are generated between the element 13 and the first heat-spreading element 15 and the plurality of heat sources.

Therefore, in order to avoid the occurrence of the aforementioned unfavorable phenomena such as surface temperature increase and thermal mismatch, as shown in FIG. Each of 152 is coated with a thermal grease 14 . In other words, between the second surface 132 of the second heat spreader 13 and the first side 151 of the first heat spreader 15 and between the surfaces of the CPU 201 and GPU 202 and the first heat spreader 15 A layer of thermal paste 14 is inserted between the second sides 152, which can not only adjust the adhesion and fixation between the second heat equalizing member 13, the first heat equalizing member 15, and the plurality of heat sources (CPU 201, GPU 202). mechanism and also avoid thermal mismatch caused by high heat flow. Of course, in other feasible embodiments, other thermal interface materials can also be used as or in place of the thermally conductive paste 14 .

Please refer to Figure 13, Figure 14 and Figure 15 repeatedly. In the third embodiment, the shell 11 ( 2D ) has a honeycomb structure 11HB corresponding to the top of the heat source, and when the shell 11 ( 2D) is placed above the low thermal conductivity medium 12 , the honeycomb structure 11HB 11HB contacts the low thermal conductivity medium 12 , so that a plurality of air gaps (Air Gap) are formed between the honeycomb structure 11HB and the low thermal conductivity medium 12 . In other words, when Kapton double-sided tape is used as the low thermal conductivity medium 12, a plurality of honeycomb structures 11HB can be formed on the inner surface of the shell 11 at the same time, and each of the honeycomb structures 11HB can be separated from the The low thermal conductivity medium 12 , the second heat equalizing member 13 and the plurality of the first heat equalizing members 15 are respectively opposite to the plurality of the heat sources. In this way, the plurality of honeycomb structures 11HB can not only enhance the structural strength of the casing 11 (ie, the bottom cover 2D of the notebook computer 2 ), but also help to adjust (enhance) the surfaces of the CPU 201 and the GPU 202 . close contact with the second surface 132 of the second heat spreader 13 . More importantly, each of the honeycomb structures 11HB includes a plurality of honeycomb holes, and the plurality of the honeycomb holes form a plurality of air gaps between the inner surface of the shell 11 and the low thermal conductivity medium 12, It is helpful to lower the surface temperature of the casing 11 and increase the heat radiation heat dissipation of the outer surface of the casing 11 .

In a feasible embodiment, an elastic pressing unit including a low thermal conductivity layer P1 and an elastic sheet P2 as shown in FIG. 11 can also be integrated into the third embodiment. That is, the elastic pressing unit is embedded in the low thermal conductivity medium 12 or the shell 11, and includes a low thermal conductivity layer P1 and an elastic sheet P2, wherein the elastic sheet P2 is arranged between the low thermal conductivity layer P1 and used to embed the low thermal conductivity medium 12 and/or the shell 11 ( 2D ), so that the low thermal conductivity layer P1 contacts the second heat spreader 13 . In a feasible embodiment, the low thermal conductivity layer P1 is, for example, an aerogel or an air gap. The elastic pressing unit provides a function similar to spring pressing, which not only makes the second heat spreader 13, the first heat spreader 15, the thermal paste 14, and the heat source (CPU 201, GPU 202) in close contact with each other, The close connection effect on the structure can also be achieved, so as to avoid the occurrence of thermal mismatch and ensure that the outer surface of the shell 11 exerts the best radiation and heat dissipation effect.

Further, at least one locking member can also be used to tightly lock the second heat equalizing member 13 , the first heat equalizing member 15 and the low thermal conductivity medium 12 on the inner surface of the shell member 11 , and can also be adjusted at the same time. The tightness of the second heat spreader 13 , the first heat spreader 15 , the low thermal conductivity medium 12 and the CPU 201 and/or the GPU 202 to avoid thermal mismatch caused by high heat flow. The locking member may be selected from a drilling screw, a fastener and/or an inserting member, for example. It is added that the use of low thermal conductivity double-sided tape as the low thermal conductivity medium 12 also helps to adjust the adhesion between the surfaces of the CPU 201 and the GPU 202 and the second surface 132 of the second heat spreader 13 . mechanism, such as Kapton tape (polyimide) with double-sided adhesive layer.

Thus, the above has completely and clearly explained a case structure with efficient thermal management function disclosed by the present invention. It must be emphasized that the above-mentioned detailed descriptions are for specific descriptions of feasible embodiments of the present invention, but the embodiments are not intended to limit the patent scope of the present invention. All should be included in the scope of the patent in this case.

<The present invention> 1: Chassis structure with efficient thermal management function 11: Shell parts 11L: inner surface treatment layer 11U: outer surface treatment layer 11HB: Honeycomb Structure 12: Low thermal conductivity medium 13: Second soaking piece 131: First Surface 132: Second Surface 14: Thermal paste 15: The first soaking piece 151: First side 152: Second side P1: Low thermal conductivity layer P2: elastic sheet 2: Notebook 2A: Back cover 2B: Front Panel 2C: upper cover 2C1: accommodating space 2D: Bottom cover 20: Motherboard 201:CPU 202: GPU 21: Lithium battery

＜Knowledge＞ 1': Laptop 1A’: Back cover 1B': Front panel 1C’: top cover 1C1’: accommodating space 1D’: Bottom cover 1D1’: heat dissipation hole 10': Motherboard 11': Lithium battery 12': cooling fan 101’: CPU 102': GPU

FIG. 1 shows a perspective view of a conventional notebook computer; FIG. 2 shows an exploded view of some components of a conventional notebook computer; FIG. 3 shows a perspective view of an electronic device including a case structure with an efficient thermal management function of the present invention; FIG. 4 shows another perspective view of the electronic device including the chassis structure with efficient thermal management function of the present invention; Figure 5 shows a data graph of temperature versus radiative capacity for different metal materials; FIG. 6 is a schematic exploded perspective view showing the structure of the casing with efficient thermal management function of the present invention; FIG. 7 is a schematic side cross-sectional view of the casing structure 1 with efficient thermal management function of the present invention; FIG. 8 shows a perspective view of an electronic device including a case structure with an efficient thermal management function of the present invention; FIG. 9 shows another perspective view of the electronic device including the chassis structure with efficient thermal management function of the present invention; FIG. 10 is a schematic exploded perspective view showing the structure of the casing with efficient thermal management function of the present invention; FIG. 11 is a schematic side cross-sectional view showing the structure of the case with efficient thermal management function of the present invention; 12A shows a schematic side cross-sectional view of the casing structure with efficient thermal management function of the present invention; FIG. 12B shows a schematic side cross-sectional view of the case structure with efficient thermal management function of the present invention 13 shows a perspective view of an electronic device including a chassis structure with efficient thermal management function of the present invention; FIG. 14 shows another perspective view of the electronic device including the chassis structure with efficient thermal management function of the present invention; and FIG. 15 is a schematic side cross-sectional view of the case structure 1 with efficient thermal management function of the present invention.

1: Chassis structure with efficient thermal management function

11: Shell parts

12: Low thermal conductivity medium

13: Second soaking piece

131: First Surface

132: Second Surface

15: The first soaking piece

151: First side

152: Second side

2: Notebook

2A: Back cover

2B: Front Panel

2C: upper cover

2C1: accommodating space

2D: Bottom cover

20: Motherboard

201:CPU

202: GPU

21: Lithium battery

Claims (41)

A casing structure with efficient thermal management function is applied in an electronic device to process a heat source, comprising: at least one first heat equalizing element, disposed above the heat source; A second heat-spreading element is disposed above the first heat-spreading element, wherein the heat flow generated by the heat source is transferred from the first heat-spreading element to the second heat-spreading element, and the second heat-spreading element Spread in the second heat spreader in a two-dimensional heat transfer manner; a low thermal conductivity medium disposed above the second heat spreader; and A shell is arranged above the low thermal conductivity medium; Wherein, the low thermal conductivity medium is used to slow down a heat transfer rate of the heat flow from the second heat equalizing member to the shell member, so that the shell member can dissipate the heat flow in the process of heat radiation. Effectively control the surface temperature of one of the shells. The casing structure with efficient thermal management function as claimed in claim 1, wherein the low thermal conductivity medium is less than or equal to 0.2 W/m. A thermal conductivity of K. The casing structure with efficient thermal management function according to claim 2, wherein the material of the low thermal conductivity medium is selected from the group consisting of thermally conductive pressure sensitive adhesive (PSA), aerogel (Aerogel), Kapton tape, Any one of the group consisting of polyimide tape and NASBIS thermal insulation sheet. The casing structure with efficient thermal management function as claimed in claim 1, wherein the casing is made of a non-metallic material, and the non-metallic material is selected from the group consisting of plastic, carbon fiber and glass any of . The casing structure with efficient thermal management function according to claim 1, wherein the casing is made of a metal material, and the metal material is selected from magnesium alloys, aluminum alloys, iron alloys, titanium alloys and other metal materials any of the formed groups. The casing structure with efficient thermal management function according to claim 5, wherein the magnesium alloy is a magnesium-based alloy, such as magnesium-lithium alloy, magnesium-lithium-aluminum alloy, magnesium-aluminum alloy, magnesium-manganese alloy, magnesium-zirconium alloy Any of the group consisting of magnesium-based alloys. The casing structure with efficient thermal management function as claimed in claim 5, wherein the casing member includes an inner surface treatment layer which is in contact with the low thermal conductivity medium. The casing structure with efficient thermal management function as claimed in claim 7, wherein the casing further comprises an outer surface treatment layer. The casing structure with efficient thermal management function as claimed in claim 8, wherein the inner surface treatment layer and the outer surface treatment layer are both selected from any one of the group consisting of an anode treatment layer and a ceramic coating layer By. The casing structure with efficient thermal management function as claimed in claim 1, wherein the second heat spreader is selected from the group consisting of a vapor chamber (Vapor Chamber), a metal thermal ground plane (Metal Thermal Ground Plane) and a polymer Any of the group consisting of the Polymer Thermal Ground Plane. The casing structure with efficient thermal management function according to claim 1, wherein a heat medium material is provided between the heat source and the first heat equalizing member, and the first heat equalizing member and the second heat equalizing member are provided with a heat medium material. The heat medium material is also provided between the heat pieces. The casing structure with efficient thermal management function as claimed in claim 1, wherein the first heat spreader is selected from any one of the group consisting of graphite sheets, metal heat sinks and ceramic heat sinks By. The casing structure with efficient thermal management function as claimed in claim 1 further includes at least one locking member for tightly locking the second heat equalizing member and the low thermal conductivity medium on the casing member. A casing structure with efficient thermal management function is applied in an electronic device to process a heat source, comprising: at least one first heat equalizing element, disposed above the heat source; A second heat-spreading element is disposed above the first heat-spreading element, wherein the heat flow generated by the heat source is transferred from the first heat-spreading element to the second heat-spreading element, and the second heat-spreading element is transmitted by the second heat-spreading element The parts are distributed in the second heat soaking part in a two-dimensional heat transfer manner; a low thermal conductivity medium disposed above the second heat equalizing member; a shell disposed above the low thermal conductivity medium; and an elastic pressing unit embedded in a side of the casing facing the low thermal conductivity medium and the second heat equalizing member; Wherein, the elastic pressing unit includes a low thermal conductivity layer, and the low thermal conductivity layer and the low thermal conductivity medium are used to slow down a heat transfer rate of the heat flow from the second heat equalizing member to the shell member, so that the shell In the process of dissipating the heat flow by the heat radiation, the surface temperature of one of the shell parts can be effectively controlled. The casing structure with efficient thermal management function as claimed in claim 14, wherein the elastic pressing unit further comprises an elastic sheet disposed on the low thermal conductivity layer and used to embed the low thermal conductivity medium and/or the shell so that the low thermal conductivity layer contacts the second heat spreader. The casing structure with efficient thermal management function as claimed in claim 15, further comprising a fixing plate with at least one screw, which is disposed between the casing 11 and the low thermal conductivity medium 12 and located in the elastic pressing unit above; wherein, by adjusting the drilling depth of one of the screws, the elastic pressing unit can be tightly combined with the low thermal conductivity medium 12 and the second heat equalizing member 13 . The casing structure with efficient thermal management function as claimed in claim 16, wherein the screw provides a pressure to the elastic pressing unit, and can be adjusted by changing an area of the elastic pressing unit The lower pressure is applied to the unit pressure of the elastic pressurizing unit and the second heat equalizing member 13 . The casing structure with efficient thermal management function as claimed in claim 14, wherein the casing is made of a non-metallic material, and the non-metallic material is selected from the group consisting of plastic, carbon fiber and glass any of . The casing structure with efficient thermal management function as claimed in claim 14, wherein the casing is made of a metal material, and the metal material is selected from magnesium alloys, aluminum alloys, iron alloys, and titanium alloys, etc. Any one of the group consisting of metallic materials. The casing structure with efficient thermal management function according to claim 19, wherein the magnesium alloy is a magnesium-based alloy, such as magnesium-lithium alloy, magnesium-lithium-aluminum alloy, magnesium-aluminum alloy, magnesium-manganese alloy, magnesium-zirconium alloy Any of the group consisting of magnesium-based alloys such as The casing structure with efficient thermal management function as claimed in claim 14, wherein the casing member includes an inner surface treatment layer which is in contact with the low thermal conductivity medium. The casing structure with efficient thermal management function as claimed in claim 21, wherein the casing further comprises an outer surface treatment layer. The casing structure with efficient thermal management function as claimed in claim 22, wherein the inner surface treatment layer and the outer surface treatment layer are both selected from any one of the group consisting of an anode treatment layer and a ceramic coating layer By. The casing structure with efficient thermal management function as claimed in claim 14, wherein the second heat spreader is selected from the group consisting of a vapor chamber (Vapor Chamber), a metal thermal ground plane (Metal Thermal Ground Plane) and a polymer Any of the group consisting of the Polymer Thermal Ground Plane. The casing structure with efficient thermal management function according to claim 14, wherein a heat medium material is arranged between the heat source and the first heat equalizing member, and the first heat equalizing member and the second heat equalizing member are provided with a heat medium material. The heat medium material is also provided between the heat pieces. The casing structure with efficient thermal management function as claimed in claim 14, wherein the first heat spreader is selected from any one of the group consisting of graphite sheets, metal heat sinks and ceramic heat sinks By. The casing structure with efficient thermal management function as claimed in claim 14 further includes at least one locking member for tightly locking the second heat equalizing member and the low thermal conductivity medium on the casing member. A casing structure with efficient thermal management function is applied in an electronic device to process a heat source, comprising: at least one first heat equalizing element, disposed above the heat source; A second heat-spreading element is disposed above the first heat-spreading element, wherein the heat flow generated by the heat source is transferred from the first heat-spreading element to the second heat-spreading element, and the second heat-spreading element is transmitted by the second heat-spreading element The parts are distributed in the second heat soaking part in a two-dimensional heat transfer manner; a low thermal conductivity medium disposed above the second heat equalizing member; A shell is disposed above the low thermal conductivity medium; wherein, the shell has a honeycomb structure corresponding to the top of the heat source, and when the shell is disposed above the low thermal conductivity medium, the honeycomb structure contacts the low thermal conductivity When a thermally conductive medium is used, a plurality of air gaps are formed between the honeycomb structure and the low thermally conductive medium; and an elastic pressing unit embedded in a side of the casing facing the low thermal conductivity medium and the second heat equalizing member; Wherein, the elastic pressing unit includes a low thermal conductivity layer, and the low thermal conductivity layer and the low thermal conductivity medium are used to slow down a heat transfer rate of the heat flow from the second heat equalizing member to the shell member, so that the shell The temperature of one surface of the shell can be effectively controlled during the process of dissipating the heat flow by the heat radiation. The casing structure with efficient thermal management function as claimed in claim 28, wherein the elastic pressing unit further comprises an elastic sheet disposed on the low thermal conductivity layer and used to embed the low thermal conductivity medium and/or the shell so that the low thermal conductivity layer contacts the second heat spreader. The casing structure with efficient thermal management function as described in claim 28 further includes a fixing plate with at least one screw, which is disposed between the casing 11 and the low thermal conductivity medium 12 and located between the elastic pressing unit Above; wherein, by adjusting the drilling depth of one of the screws, the elastic pressing unit can be tightly combined with the low thermal conductivity medium 12 and the second heat equalizing member 13 . The casing structure with efficient thermal management function according to claim 30, wherein, the screw provides a pressure to the elastic pressing unit, and by changing an area size of the elastic pressing unit, the elastic pressing unit can be The unit pressure applied to the elastic pressurizing unit ( P1 , P2 ) and the second heat equalizing member 13 is regulated and adjusted. The casing structure with efficient thermal management function as claimed in claim 28, wherein the casing is made of a non-metallic material, and the non-metallic material is selected from the group consisting of plastic, carbon fiber and glass any of . The casing structure with efficient thermal management function as claimed in claim 28, wherein the casing is made of a metal material, and the metal material is selected from magnesium alloys, aluminum alloys, iron alloys, and titanium alloys Form any of the groups. The casing structure with efficient thermal management function according to claim 33, wherein the magnesium alloy is a magnesium-based alloy, such as magnesium-lithium alloy, magnesium-lithium-aluminum alloy, magnesium-aluminum alloy, magnesium-manganese alloy, magnesium-zirconium alloy Any of the group consisting of magnesium-based alloys such as The casing structure with efficient thermal management function as claimed in claim 28 , wherein the casing member includes an inner surface treatment layer which is in contact with the low thermal conductivity medium 12 . The casing structure with efficient thermal management function as claimed in claim 35, wherein the casing further comprises an outer surface treatment layer. The casing structure with efficient thermal management function as claimed in claim 36, wherein the inner surface treatment layer and the outer surface treatment layer are both selected from any one of the group consisting of an anode treatment layer and a ceramic coating layer By. The casing structure with efficient thermal management function as claimed in claim 28, wherein the second heat spreader is selected from the group consisting of a vapor chamber (Vapor Chamber), a metal thermal ground plane (Metal Thermal Ground Plane) and a polymer Any of the group consisting of the Polymer Thermal Ground Plane. The casing structure with efficient thermal management function according to claim 28, wherein a heat medium material is provided between the heat source and the first heat equalizing member, and the first heat equalizing member and the second heat equalizing member are provided with a heat medium material. The heat medium material is also provided between the heat pieces. The case structure with efficient thermal management function as claimed in claim 28, wherein the first heat spreader is selected from any one of the group consisting of graphite sheets, metal heat sinks and ceramic heat sinks By. The casing structure with efficient thermal management function as claimed in claim 28, further comprising at least one locking member for tightly locking the second heat equalizing member and the low thermal conductivity medium on the casing member.

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