CN213280472U - Elastic thermal connection structure and whole machine structure - Google Patents
Elastic thermal connection structure and whole machine structure Download PDFInfo
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- CN213280472U CN213280472U CN202022136099.1U CN202022136099U CN213280472U CN 213280472 U CN213280472 U CN 213280472U CN 202022136099 U CN202022136099 U CN 202022136099U CN 213280472 U CN213280472 U CN 213280472U
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Abstract
The utility model discloses an elastic thermal connection structure and a whole machine structure, wherein the elastic thermal connection structure comprises a graphite sheet outer layer and a foam inner layer, and the graphite sheet outer layer wraps the foam inner layer; the whole machine structure comprises a shell, a plurality of chips and the elastic thermal connection structure, wherein graphite radiating fins are arranged on the inner wall of the shell. The embodiment of the utility model provides an in, elasticity thermal connection structure has the stable and reliable advantage that heat conduction efficiency is high of thermal connection, will elasticity thermal connection structure sets up between the part that generates heat of complete machine mechanism and the final heat dissipation part, can reach the passive radiating effect of ideal, has fine practicality.
Description
Technical Field
The utility model relates to a heat radiation structure technical field particularly, relates to a hot connection structure of elasticity and complete machine structure.
Background
The chip of electronic product can produce a large amount of heat at the during operation, if the heat that will produce in time dispels the product outside, heat can be in the inside accumulation of product, leads to the chip temperature to rise continuously, and then influences the normal work of chip.
The conventional heat dissipation technology is generally divided into passive heat dissipation and active heat dissipation, the passive heat dissipation generally refers to the purpose of dissipating heat from a high-temperature region to a low-temperature region by utilizing heat conduction, and the passive heat dissipation generally also comprises natural convection heat dissipation and radiation heat dissipation, and has natural advantages, such as stable work (no moving part is used, mechanical failure is not easy to generate), no additional power is required/no additional power consumption is required, and no noise is generated (especially important in equipment sensitive to noise).
In a passive heat dissipation system with heat conduction as a main component, a heating component and a heat transfer component are required to have good thermal connection (good contact) so as to ensure low thermal resistance, but in the whole machine design of a product, due to the reasons of the whole machine structure, the whole machine assembly sequence, the product part tolerance, the product assembly tolerance, the product part rigidity insufficiency and the like, the stable and reliable thermal connection between the heating component and the final heat dissipation component of the product is difficult to ensure; the prior art generally adopts the elasticity thermal connection mode to realize passive heat dissipation, for example adopt the silica gel heat conduction pad to realize passive heat dissipation, but the silica gel heat conduction pad has the poor problem of elasticity and thickness is little, hardly guarantees stable, reliable hot connection between the part of generating heat of product and the final heat dissipation part, when the distance of the part of generating heat and final heat dissipation part is than far away simultaneously, following two reasons can lead to using the scheme of traditional silica gel cooling pad to be difficult to reach the expectation: 1. the silica gel heat dissipation pad has low heat conductivity, and the silica gel heat dissipation pad is generally placed on an electronic mainboard and requires insulation, so that the heat conductivity is extremely low; 2. the silica gel heat conduction pad is poor in elasticity and small in resilience after compression, so that the silica gel heat conduction pad is limited in use and is difficult to contact and further difficult to guarantee reliable heat conduction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, the utility model provides a elasticity thermal connection structure and whole quick-witted structure, elasticity thermal connection structure has the reliable and stable advantage that heat conduction efficiency is high of thermal connection, will elasticity thermal connection structure sets up between the part that generates heat and the final radiating part of complete machine mechanism, can reach the passive radiating effect of ideal, has fine practicality.
Correspondingly, the embodiment of the utility model provides a hot connection structure of elasticity, hot connection structure of elasticity includes the outer and the cotton inlayer of bubble of graphite flake, the outer parcel of graphite flake the cotton inlayer of bubble.
In an alternative embodiment, the outer layer of graphite sheets is formed by folding an outer layer of strip-shaped graphite sheets, wherein the outer layer of strip-shaped graphite sheets is formed by compounding a plurality of single layers of strip-shaped graphite sheets.
In an optional embodiment, the single layers of the multilayer strip-shaped graphite sheets are bonded through a double-sided adhesive PET sheet;
the single-layer surface of the adhered multilayer strip-shaped graphite sheet forms edge sealing in a mode of integrally spraying a film, or the single-layer surface of the adhered multilayer strip-shaped graphite sheet is packaged by a PET sheet with glue on a single surface.
In an optional embodiment, a first glue coating area is arranged on one side of the top surface of the outer layer of the strip-shaped graphite sheet, a second glue coating area is arranged in the middle of the top surface of the outer layer of the strip-shaped graphite sheet, a third glue coating area is arranged on the other side of the top surface of the outer layer of the strip-shaped graphite sheet, and glue is coated on all the first glue coating area, the second glue coating area and the third glue coating area, or a double-sided glue-coated PET sheet is stuck on all the first glue coating area, the second glue coating area and the third glue coating area;
when the strip-shaped graphite sheet outer layer is bent to form the graphite sheet outer layer, the top surface of the strip-shaped graphite sheet outer layer is bent to form the inner wall of the graphite sheet outer layer, wherein the first glue coating area and the third glue coating area form the bottom surface of the inner wall of the graphite sheet outer layer, and the second glue coating area is the top surface of the inner wall of the graphite sheet outer layer;
the bottom surface of the foam inner layer is bonded with the bottom surface of the inner wall, and the top surface of the foam inner layer is bonded with the top surface of the inner wall.
In an optional embodiment, a fourth glue-coated area is arranged on one side of the bottom surface of the outer layer of the strip-shaped graphite sheet, a fifth glue-coated area is arranged on the other side of the bottom surface of the outer layer of the strip-shaped graphite sheet, and both the fourth glue-coated area and the fifth glue-coated area are coated with glue, or both the fourth glue-coated area and the fifth glue-coated area are adhered with a PET sheet with double-sided tape glue;
when the strip-shaped graphite sheet outer layer is bent and formed into the graphite sheet outer layer, the bottom surface of the strip-shaped graphite sheet outer layer is bent and formed into the graphite sheet outer layer outer wall, wherein the fourth glue coating area and the fifth glue coating area form the graphite sheet outer layer outer wall bottom surface.
In an alternative embodiment, the outer layer of graphite sheets is folded at each edge into a rounded transition.
In an optional embodiment, the inner layer of the foam is a single-layer foam;
or the foam inner layer is formed by compounding multiple layers of foam with the same section;
or the foam inner layer is formed by compounding multiple layers of foam with different sections.
In addition, the embodiment of the utility model also provides a complete machine structure, the complete machine structure comprises a shell, a plurality of chips and the elastic thermal connection structure, and the inner wall of the shell is provided with graphite cooling fins;
the chips are fixed inside the shell, the elastic thermal connection structure is arranged between the chips and the graphite radiating fin, and the chips are adhered to the bottom surface of the outer wall of the graphite sheet outer layer;
or the chips are fixed in the shell, an installation platform is arranged above the chips, the elastic thermal connection structure is arranged between the installation platform and the graphite radiating fin, and the installation platform is bonded on the bottom surface of the outer wall of the graphite sheet outer layer;
or the plurality of chips are fixed inside the shell and connected through graphite connecting sheets, the elastic thermal connection structure is arranged between the graphite connecting sheets and the graphite radiating fins, and the graphite connecting sheets are bonded on the bottom surface of the outer wall of the graphite sheet.
In an optional implementation manner, a silica gel heat conducting pad is arranged between the bottom of the mounting platform and the plurality of chips.
The embodiment of the utility model provides an elasticity thermal connection structure and whole quick-witted structure, elasticity thermal connection structure includes the outer and the cotton inlayer of bubble of graphite flake, the outer parcel of graphite flake utilize artifical graphite and the cotton material characteristic of bubble, compound two kinds of materials, thereby obtain one kind and have good elasticity and have the elasticity thermal connection structure of good heat conductivity, good elasticity can guarantee the good contact between the heating part of product and the final radiating part, can guarantee stable, reliable thermal connection between the heating part of product and the final radiating part, guarantee to have than low thermal resistance, guarantee passive radiating's effect, good heat conductivity leads heat to the final radiating part from the heating part better, can guarantee passive radiating's effect equally, have fine practicality; the whole machine structure comprises a shell, a plurality of chips and the elastic thermal connection structure, wherein graphite radiating fins are arranged on the inner wall of the shell, the chips are heating parts of the whole machine structure, the graphite radiating fins on the inner wall of the shell are final radiating parts of the whole machine structure, a foam inner layer in the elastic thermal connection structure can ensure that the chips are in good contact with the graphite radiating fins on the inner wall of the shell, stable and reliable thermal connection between the chips and the graphite radiating fins is ensured, and the graphite flake outer layer in the elastic thermal connection structure can well guide heat from the chips to the graphite radiating fins, so that a good passive radiating effect can be achieved, and the elastic thermal connection structure has good practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a first three-dimensional structure of an elastic thermal connection structure in an embodiment of the present invention;
FIG. 2 is a second three-dimensional structural schematic view of an elastic thermal connection structure in an embodiment of the present invention;
FIG. 3 is a front view of an elastic thermal connection structure in an embodiment of the present invention;
FIG. 4 is a schematic view of a composite of a single layer of strip-shaped graphite sheets according to an embodiment of the present invention;
FIG. 5 is a schematic top view of an outer layer of strip-shaped graphite sheets according to an embodiment of the present invention;
FIG. 6 is a schematic bottom view of an outer layer of a strip-shaped graphite sheet according to an embodiment of the present invention;
FIG. 7 is a schematic packaging diagram of a PET sheet with glue on one side according to an embodiment of the present invention;
fig. 8 is a schematic three-dimensional structure of an outer layer of a graphite sheet in an elastically bent state according to an embodiment of the present invention;
fig. 9 is a cross-sectional view of an outer layer of a graphite sheet in an elastically bent state in an embodiment of the present invention;
FIG. 10 is a cross-sectional view of an elastic thermal connection in an embodiment of the present invention;
FIG. 11 is an exploded view of a multilayer foam with different cross-sections according to an embodiment of the present invention;
FIG. 12 is a sectional view of the multi-layered foam with different cross-sections according to the embodiment of the present invention;
fig. 13 is an exploded view of a first side of the overall structure of an embodiment of the present invention;
fig. 14 is an exploded view of a second side of the overall structure in an embodiment of the present invention;
FIG. 15 is a schematic view of a partial structure of the entire structure of the embodiment of the present invention;
fig. 16 is an exploded view of the third side of the whole structure of the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic diagram of a first three-dimensional structure of an elastic thermal connection structure in an embodiment of the present invention, fig. 2 is a schematic diagram of a second three-dimensional structure of an elastic thermal connection structure in an embodiment of the present invention, and fig. 3 is a front view of an elastic thermal connection structure in an embodiment of the present invention.
The embodiment of the utility model provides an elasticity hot connection structure, elasticity hot connection structure includes the outer 1 and the cotton inlayer 2 of bubble of graphite flake, the outer 1 parcel of graphite flake the cotton inlayer 2 of bubble.
The outer graphite sheet layer 1 is made of artificial graphite, the artificial graphite has certain flexibility and can be bent, the outer graphite sheet layer 1 in different shapes can be conveniently processed to wrap the foam inner layer 2, meanwhile, the artificial graphite has very good heat conducting performance, and an ideal heat dissipation effect can be achieved through the heat conducting performance; the foam material has good elasticity and good thickness retention capacity in a long-term working state, namely, the rebound force is kept without obvious attenuation in the long-term working state.
The embodiment of the utility model provides an in, the outer 1 parcel of graphite flake bubble cotton inlayer 2 utilizes the characteristic of artifical graphite and the cotton material of bubble, compound two kinds of materials, thereby obtain an elasticity thermal connection structure that has both good elasticity and has good heat conductivity, good elasticity can guarantee the good contact between the part that generates heat and the final radiating part of product, can guarantee to stabilize between the part that generates heat and the final radiating part of product, reliable thermal connection, it has than low thermal resistance to guarantee, guarantee passive radiating effect, good thermal conductivity can lead the final radiating part from the part that generates heat better, can guarantee passive radiating effect equally, and the practicality is good.
Fig. 4 is the compound sketch map of bar graphite flake individual layer in the embodiment of the utility model, fig. 5 is the outer top surface sketch map of bar graphite flake in the embodiment of the utility model, fig. 6 is the outer bottom surface sketch map of bar graphite flake in the embodiment of the utility model.
Specifically, a plurality of layers of strip-shaped graphite sheets are laminated by single layers 11 to form an outer layer 12 of strip-shaped graphite sheets, and the outer layer 12 of strip-shaped graphite sheets is bent to form a rectangular outer layer 1 of graphite sheets.
It should be noted that the number of the strip-shaped graphite sheet single layers 11 may be determined according to the actual heat dissipation condition and the overall design of the product, and the multiple strip-shaped graphite sheet single layers 11 can increase the overall thermal conductivity of the elastic thermal connection structure.
In the embodiment of the present invention, the outer layer 1 of graphite flake can reach more ideal heat dissipation effect through specific data description:
the heat conductivity of a certain strip-shaped graphite sheet single layer 11 is 1600W/m x k, the thickness is 0.032mm, and the thickness of 8 layers of strip-shaped graphite sheet single layers 11 is about 0.32mm after being compounded.
Some radiator adopts the cast aluminium material, and aluminum plate thermal conductivity is 200W/m k, if will reach the same heat conduction effect, then the aluminum plate thickness that needs is 1600 (0.032 8)/200 ═ 2.05mm, in the concrete implementation, all vertical upwards heat conduction about graphite flake outer 1, both sides are equivalent to the heat conduction effect that is 2.05mm 2 ═ 4.1mm thickness aluminum plate, therefore can reach more ideal radiating effect.
The compound mode of multilayer bar graphite flake individual layer 11 can be multiple, in the embodiment of the utility model, the preferred PET piece 13 that glues through the double faced tape between the multilayer bar graphite flake individual layer 11 bonds, and the multilayer bar graphite flake individual layer 11's after the bonding surface can form banding 14 through the mode of whole membrane that spouts, and compound with this mode multilayer bar graphite flake individual layer 11, and form bar graphite flake skin 12.
Fig. 7 is a schematic packaging diagram of a single-sided adhesive-coated PET sheet in an embodiment of the present invention.
In the prior art, the breakage resistance of the edge sealed by the film formed by spraying is poor, the surface of the adhered multilayer strip-shaped graphite sheet single layer 11 can be packaged after final compounding through the PET sheet 9 with glue on the single surface, the PET sheet 9 with glue on the single surface has stronger wear resistance, and the strip-shaped graphite sheet outer layer 12 with better breakage resistance can be formed.
A first gluing area 121 is arranged on one side of the top surface of the outer layer 12 of the strip-shaped graphite sheet, a second gluing area 122 is arranged in the middle of the top surface of the outer layer 12 of the strip-shaped graphite sheet, a third gluing area 123 is arranged on the other side of the top surface of the outer layer 12 of the strip-shaped graphite sheet, the first gluing area 121, the second gluing area 122 and the third gluing area 123 are all coated with glue, or the first gluing area 121, the second gluing area 122 and the third gluing area 123 are all adhered with a PET sheet with double-sided tape glue, and the glue and the PET sheet with double-sided tape glue have a function of adhesion.
When the strip-shaped graphite sheet outer layer 12 is bent to form the graphite sheet outer layer 1, the top surface of the strip-shaped graphite sheet outer layer 12 is bent to form the inner wall of the graphite sheet outer layer 1, wherein the first glue coating area 121 and the third glue coating area 123 form the bottom surface 15 of the inner wall of the graphite sheet outer layer 1, and the second glue coating area 122 is the top surface 16 of the inner wall of the graphite sheet outer layer 1.
The bottom surface of the foam inner layer 2 is bonded with the inner wall bottom surface 15, the top surface of the foam inner layer 2 is bonded with the inner wall top surface 16, and the graphite sheet outer layer 1 wraps and fixes the foam inner layer 2 in this way.
Fig. 8 is a schematic diagram of a three-dimensional structure of an outer layer of a graphite sheet in an elastically bent state according to an embodiment of the present invention, and fig. 9 is a cross-sectional view of an outer layer of a graphite sheet in an elastically bent state according to an embodiment of the present invention.
It should be noted that, when the strip-shaped graphite sheet outer layer 12 is bent and formed into the graphite sheet outer layer 1, neither the left side surface of the inner wall nor the right side surface of the inner wall of the graphite sheet outer layer 1 is coated with glue, nor the left side surface of the inner wall nor the right side surface of the inner wall of the graphite sheet outer layer 1 is adhered with a PET sheet with double-sided tape glue, during the installation process or the actual use process of the elastic thermal connection structure, the graphite sheet outer layer 1 may need to be compressed, and when the graphite sheet outer layer 1 is compressed, the left side surface and the right side surface of the inner wall of the graphite sheet outer layer 1 can be freely and elastically bent, so as to facilitate the installation or the actual use of the elastic thermal connection structure, and after the installation or the actual use, the graphite sheet outer layer 1 can be elastically restored based on the foam inner layer 2, so as to ensure good contact between the heating component and the final, Reliable thermal connection.
A fourth glue coating area 124 is arranged on one side of the bottom surface of the outer layer 12 of the strip-shaped graphite sheet, a fifth glue coating area 125 is arranged on the other side of the bottom surface of the outer layer 12 of the strip-shaped graphite sheet, glue is coated on both the fourth glue coating area 124 and the fifth glue coating area 125, or a double-sided adhesive PET sheet is adhered on both the fourth glue coating area 124 and the fifth glue coating area 125, and both the glue and the double-sided adhesive PET sheet play a role in adhesion.
When the strip-shaped graphite sheet outer layer 12 is bent to form the graphite sheet outer layer 1, the bottom surface of the strip-shaped graphite sheet outer layer 12 is bent to form the outer wall of the graphite sheet outer layer 1, wherein the fourth glue coated area 124 and the fifth glue coated area 125 constitute the bottom surface 17 of the outer wall of the graphite sheet outer layer 1; in a specific implementation, the bottom surface 17 of the outer wall of the graphite sheet outer layer 1 can be bonded to a heat-generating component of a product, so as to realize the installation and fixation of the elastic thermal connection structure.
Preferably, each side of the graphite sheet outer layer 1 is bent to form a rounded transition, and during the installation process or the actual use process of the elastic thermal connection structure, the graphite sheet outer layer 1 does not damage the heat generating component and the final heat dissipating component of the product, thereby ensuring the normal operation of the heat generating component and the final heat dissipating component of the product.
Fig. 10 is a cross-sectional view of an elastic thermal connection structure in an embodiment of the invention.
Specifically, the cotton inlayer 2 of bubble can be the individual layer bubble cotton, the cotton thickness of individual layer bubble can be customized to be applicable to different products, be applicable to different heat conduction distances, be applicable to the component that generates heat and the final heat dissipation part of different distances promptly.
However, the thickness of the single-layer foam is only suitable for mass production of the elastic thermal connection structure, when only a small amount of elastic thermal connection structures are needed and no single-layer foam with a suitable thickness is available on the market, the foam inner layer 2 can be formed by compounding multiple layers of foam 21, and the multiple layers of foam 21 are compounded into a suitable thickness so as to be suitable for different products and different heat conduction distances, namely, suitable for heat-generating components and final heat-radiating components with different distances.
The foam inner layer 2 can be formed by compounding multiple layers of foam 21 with the same cross section, and the multiple layers of foam 21 with the same cross section have the advantage of convenient compounding, but the rebound force is difficult to adjust.
Fig. 11 is an exploded view of a multilayer foam having different cross sections in an embodiment of the present invention, and fig. 12 is a combined cross-sectional view of a multilayer foam having different cross sections in an embodiment of the present invention.
The foam inner layer 2 can also be formed by compounding multiple layers of foam 21 with different sections, which is helpful for adjusting the rebound force, for example, when a smaller rebound force is needed.
It should be noted that the compound mode of the multilayer foam 21 can be multiple, for example, the multilayer foam 21 can be directly bonded by glue, and the multilayer foam 21 can also be bonded by a double-sided adhesive PET sheet 13 or a single-sided adhesive tape, and the embodiment of the present invention does not limit the compound mode of the multilayer foam 21.
In specific implementation, under the elastic action of the foam inner layer 2, the lower end of the foam inner layer 2 contacts with a heating component of a product through the graphite sheet outer layer 1, and the upper end of the foam inner layer 2 contacts with a final heat dissipation component of the product through the graphite sheet outer layer 1, so that under the elastic action of the foam inner layer 2, the foam inner layer 2 can ensure good contact between the heating component and the final heat dissipation component of the product, namely, stable and reliable thermal connection between the heating component and the final heat dissipation component of the product can be ensured, specific low thermal resistance is ensured, and the passive heat dissipation effect is ensured.
The embodiment of the utility model provides an elasticity thermal connection structure, elasticity thermal connection structure includes the outer 1 and the cotton inlayer 2 of bubble of graphite flake, the outer 1 parcel of graphite flake bubble cotton inlayer 2 utilizes artifical graphite and the cotton material characteristic of bubble, compound two kinds of materials to obtain an elasticity thermal connection structure that has both good elasticity and good heat conductivity, good elasticity can guarantee the product the part that generates heat and the good contact between the final radiating part, can guarantee to generate heat stable, reliable thermal connection between the part that generates heat and the final radiating part of product, guarantee to have than low thermal resistance, guarantee passive radiating effect, good thermal conductivity can be with heat from the final radiating part of the part that generates heat guide better, can guarantee passive radiating effect equally, have fine practicality.
Fig. 13 is an exploded view of the first side of the entire structure of the embodiment of the present invention.
Additionally, the embodiment of the utility model provides a complete machine structure, complete machine structure includes shell 3, a plurality of chips 4 and foretell elasticity heat connection structure, the inner wall of shell 3 is provided with graphite fin 7, needs to explain, works as elasticity heat connection structure sets up a plurality of chips 4 with when between the shell 3, graphite fin 7 can increase elasticity heat connection structure is in heat radiating area on the shell 3 to reach more ideal passive radiating effect.
The chips 4 are fixed inside the shell 3, the elastic thermal connection structure is arranged between the chips 4 and the graphite radiating fin 7, and the chips 4 are adhered to the bottom surface 17 of the outer wall of the graphite sheet outer layer 1 so as to realize the installation and fixation of the elastic thermal connection structure.
In specific implementation, when the plurality of chips 4 are only single chips, or when the chip heights of the plurality of chips 4 are the same, the elastic thermal connection structure can be directly arranged between the plurality of chips 4 and the graphite heat sink 7, and the elastic thermal connection structure can directly realize good contact between the plurality of chips 4 and the graphite heat sink 7, so as to ensure stable and reliable thermal connection between the plurality of chips 4 and the graphite heat sink 7, thereby realizing heat conduction between the plurality of chips 4 and the graphite heat sink 7.
Fig. 14 is an exploded view of the second side of the overall structure of the embodiment of the present invention.
Or the chips 4 are fixed inside the housing 3, a mounting platform 5 is arranged above the chips 4, the elastic thermal connection structure is arranged between the mounting platform 5 and the graphite radiating fin 7, and the mounting platform 5 is bonded to the bottom surface 17 of the outer wall of the graphite sheet outer layer 1, so that the elastic thermal connection structure is mounted and fixed.
Fig. 15 is a partial structural schematic diagram of the entire structure in the embodiment of the present invention.
In specific implementation, the inside of shell 3 is provided with mainboard 31, a plurality of chips 4 are fixed on mainboard 31, mounting platform 5 passes through the fastener to be fixed on mainboard 31, just the laminating of the bottom of mounting platform 5 a plurality of chips 4.
It should be noted that, when the chips 4 are different in height, the elastic thermal connection structure is directly disposed between the chips 4 and the graphite heat sink 7, which may cause a problem of poor contact.
In specific implementation, when the height difference between the chips 4 is small, the bottom of the mounting platform 5 can absorb the small height difference, so as to ensure good contact between the chips 4 and the graphite heat sink 7 and ensure stable and reliable thermal connection between the chips 4 and the graphite heat sink 7.
In the concrete implementation, when the difference in height between a plurality of chips 4 is very big, mounting platform 5's bottom surface is the mounting platform contact surface, the mounting platform contact surface can be made a plurality of ladder faces of difference in height, with not co-altitude chip 4 phase-match among a plurality of chips 4, in order to realize a plurality of chips 4 with good contact between the graphite fin 7 guarantees a plurality of chips 4 with stable, reliable thermal connection between the graphite fin 7.
Fig. 16 is an exploded view of the third side of the whole structure of the embodiment of the present invention.
Or, the chips 4 are fixed in the housing 3, the chips 4 are connected through a graphite connecting sheet 8, the elastic thermal connection structure is arranged between the graphite connecting sheet 8 and the graphite radiating fin 7, and the graphite connecting sheet 5 is bonded to the bottom surface of the outer wall of the graphite sheet outer layer 1, so that the elastic thermal connection structure is installed and fixed.
In specific implementation, when the size difference between the chips 4 is large, the graphite connecting sheet 8 can be adopted to connect the chips 4 to form a thermal connection whole, and then the elastic thermal connection structure is arranged between the graphite connecting sheet 8 and the graphite heat radiating fin 7, so that the chips 4 and the graphite heat radiating fin 7 are in good contact, stable and reliable thermal connection between the chips 4 and the graphite heat radiating fin 7 is ensured, and heat conduction between the chips 4 and the graphite heat radiating fin 7 is realized.
The embodiment of the utility model provides an in, a plurality of chips 4 are the parts that generate heat of complete machine structure, the graphite fin 7 of the 3 inner walls of shell is the final radiating part of complete machine structure, the cotton inlayer 2 of bubble in the elasticity thermal connection structure can guarantee a plurality of chips 4 with good contact between the graphite fin 7 is guaranteed a plurality of chips 4 with stable, reliable thermal connection between the graphite fin 7, just graphite flake outer 1 in the elasticity thermal connection structure can follow heat well chip 4 direction graphite fin 7 can reach fine passive radiating effect, has fine practicality.
In addition, elasticity thermal connection structure can realize elasticity compression and elasticity and reset, has the convenient advantage of equipment, can not produce extra equipment difficulty.
Specifically, mounting platform 5's bottom with be provided with silica gel heat conduction pad 6 between a plurality of chips 4, silica gel heat conduction pad 6 can fill mounting platform 5's bottom with clearance between a plurality of chips 4 combines the heat conduction effect of silica gel heat conduction pad 6 self can follow well heat a plurality of chips 4 direction mounting platform 5 with the elastic thermal connection structure on the mounting platform 5, and the warp the outer 1 with the heat conduction of graphite flake in the elastic thermal connection structure graphite fin 7 to reach more ideal passive radiating effect.
It should be noted that, when the elastic thermal connection structure is directly disposed between the chips 4 and the graphite heat sink 7, the elastic thermal connection structure and the chips 4 can be attached to each other without a gap, so that the silicone thermal pad 6 is not required to be disposed; when the elastic thermal connection structure is arranged between the graphite connecting sheet 8 and the graphite radiating fins 7, the elastic thermal connection structure and the graphite connecting sheet 8 can be attached without gaps, so that the silica gel heat conducting pad 6 is not required to be arranged.
Preferably, the mounting platform 5 is an aluminum radiator, and the aluminum radiator has good heat conduction effect and heat dissipation effect, and can achieve more ideal passive heat dissipation effect.
The embodiment of the utility model provides a complete machine structure, complete machine structure includes shell 3, a plurality of chips 4 and foretell elasticity heat connection structure, the inner wall of shell 3 is provided with graphite fin 7, a plurality of chips 4 are the parts that generate heat of complete machine structure, the graphite fin 7 of 3 inner walls of shell is the final heat dissipation part of complete machine structure, the cotton inlayer 2 of bubble in the elasticity heat connection structure can guarantee a plurality of chips 4 with good contact between the graphite fin 7 guarantees a plurality of chips 4 with stable, reliable thermal connection between the graphite fin 7, just graphite flake outer 1 among the elasticity heat connection structure can follow heat well a plurality of chips 4 direction graphite fin 7 can reach fine passive radiating effect, has fine practicality.
In addition, the above detailed description is made on an elastic thermal connection structure and a whole structure provided by the embodiment of the present invention, and a specific example should be adopted herein to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (9)
1. An elastic thermal connection structure, characterized in that the elastic thermal connection structure comprises an outer graphite sheet layer and an inner foam layer, wherein the outer graphite sheet layer wraps the inner foam layer.
2. The elastic thermal connection according to claim 1, wherein the outer layer of graphite sheets is formed by folding an outer layer of strip-shaped graphite sheets, wherein the outer layer of strip-shaped graphite sheets is formed by single-layer compounding of a plurality of layers of strip-shaped graphite sheets.
3. The elastic thermal connection structure according to claim 2, wherein the single layers of the multilayer strip-shaped graphite sheets are bonded to each other by a double-sided adhesive PET sheet;
the single-layer surface of the adhered multilayer strip-shaped graphite sheet forms edge sealing in a mode of integrally spraying a film, or the single-layer surface of the adhered multilayer strip-shaped graphite sheet is packaged by a PET sheet with glue on a single surface.
4. The elastic thermal connection structure according to claim 2, wherein one side of the top surface of the outer layer of strip-shaped graphite sheets is provided with a first glue coated area, the middle part of the top surface of the outer layer of strip-shaped graphite sheets is provided with a second glue coated area, the other side of the top surface of the outer layer of strip-shaped graphite sheets is provided with a third glue coated area, and the first glue coated area, the second glue coated area and the third glue coated area are all coated with glue, or the first glue coated area, the second glue coated area and the third glue coated area are all pasted with double-sided glue PET sheets;
when the strip-shaped graphite sheet outer layer is bent to form the graphite sheet outer layer, the top surface of the strip-shaped graphite sheet outer layer is bent to form the inner wall of the graphite sheet outer layer, wherein the first glue coating area and the third glue coating area form the bottom surface of the inner wall of the graphite sheet outer layer, and the second glue coating area is the top surface of the inner wall of the graphite sheet outer layer;
the bottom surface of the foam inner layer is bonded with the bottom surface of the inner wall, and the top surface of the foam inner layer is bonded with the top surface of the inner wall.
5. The elastic thermal connection structure according to claim 2, wherein one side of the bottom surface of the outer layer of strip-shaped graphite sheets is provided with a fourth glue coated area, the other side of the bottom surface of the outer layer of strip-shaped graphite sheets is provided with a fifth glue coated area, and the fourth glue coated area and the fifth glue coated area are both coated with glue or a double-sided glued PET sheet is stuck on the fourth glue coated area and the fifth glue coated area;
when the strip-shaped graphite sheet outer layer is bent and formed into the graphite sheet outer layer, the bottom surface of the strip-shaped graphite sheet outer layer is bent and formed into the graphite sheet outer layer outer wall, wherein the fourth glue coating area and the fifth glue coating area form the graphite sheet outer layer outer wall bottom surface.
6. The flexible thermal connection of claim 2, wherein the edges of the outer layer of graphite sheets are bent into rounded transitions.
7. The elastic thermal connection of claim 1 wherein the foam inner layer is a single layer of foam;
or the foam inner layer is formed by compounding multiple layers of foam with the same section;
or the foam inner layer is formed by compounding multiple layers of foam with different sections.
8. The whole structure is characterized by comprising a shell, a plurality of chips and the elastic thermal connection structure of any one of claims 1 to 7, wherein graphite radiating fins are arranged on the inner wall of the shell;
the chips are fixed inside the shell, the elastic thermal connection structure is arranged between the chips and the graphite radiating fin, and the chips are adhered to the bottom surface of the outer wall of the graphite sheet outer layer;
or the chips are fixed in the shell, an installation platform is arranged above the chips, the elastic thermal connection structure is arranged between the installation platform and the graphite radiating fin, and the installation platform is bonded on the bottom surface of the outer wall of the graphite sheet outer layer;
or the plurality of chips are fixed inside the shell and connected through graphite connecting sheets, the elastic thermal connection structure is arranged between the graphite connecting sheets and the graphite radiating fins, and the graphite connecting sheets are bonded on the bottom surface of the outer wall of the graphite sheet.
9. The complete machine structure according to claim 8, wherein a silica gel heat conducting pad is arranged between the bottom of the mounting platform and the plurality of chips.
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| CN202022136099.1U CN213280472U (en) | 2020-09-25 | 2020-09-25 | Elastic thermal connection structure and whole machine structure |
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| CN202022136099.1U CN213280472U (en) | 2020-09-25 | 2020-09-25 | Elastic thermal connection structure and whole machine structure |
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