CN208798298U - A kind of heat dissipation laminated construction and radiator - Google Patents
A kind of heat dissipation laminated construction and radiator Download PDFInfo
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- CN208798298U CN208798298U CN201821010903.8U CN201821010903U CN208798298U CN 208798298 U CN208798298 U CN 208798298U CN 201821010903 U CN201821010903 U CN 201821010903U CN 208798298 U CN208798298 U CN 208798298U
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Abstract
The utility model discloses a kind of heat dissipation laminated construction and corresponding radiators, the laminated construction that radiates includes at least two composite radiating layers being sequentially stacked, and each composite radiating layer includes the gum layer (11), metal foil layer (12) and non-metallic layer (13) being sequentially stacked.Preferably, the utility model further includes the liquid-metal layer (14) being formed between metal foil layer (12) and non-metallic layer (13), and the surface towards the non-metallic layer (13) of the metal foil layer (12) is equipped with sagging groove or pit, may also be formed with capillary structure in the bottom and side of pit or groove.The utility model can improve significantly the radiating efficiency of radiator, and reduce damage of the heat for peripheral devices.
Description
Technical field
The utility model belongs to technical field of heat dissipation, in particular to uses the heat dissipation technology of graphene.
Background technique
Conventional heat sink material includes silica gel, high-thermal conductive metal etc..Especially copper and aluminium are more common in metal.Copper is led
The disadvantages of hot coefficient is 398W/mK, but has density big, oxidizable.The thermal coefficient of aluminium is not high (237W/mK), sometimes very
Difficulty meets the needs of existing product is to heat conduction and heat radiation.The natural graphite material and artificial synthesized graphite material used at present
Manufactured heat dissipation film has certain improvement to the heat dissipation of electronic product, but graphite radiating film is mainly by after graphite treatment
Made of the methods of method and the macromolecule charing directly rolled, graphitization, surface is that the heat sink material of graphite its tension is strong
Degree is not high, and frangible and granule dust is more, it has not been convenient to installation and use.
Graphene (Graphene) be one kind by carbon atom with sp2Hybridized orbit forms the plane that hexangle type is in honeycomb lattice
Film, the two-dimensional material of only one carbon atom thickness.It is but also most hard nano material that graphene, which is most thin in the world, thermally conductive
Coefficient is up to 5300W/mK, is higher than carbon nanotube and diamond, this makes grapheme material become standby in heat sink material field
The nova to attract attention.However the heat-conducting effect of graphene is there are anisotropy, its only heat dissipation effect on two-dimensional surface
Preferably, heating conduction in the longitudinal direction but sharply gives a discount, and existing graphene heat dissipation film is without solving this problem.This
Outside, the graphene heat dissipation film of prior art preparation is one layer of radiator structure, and it still needs further improvement for radiating efficiency.
Summary of the invention
(1) technical problems to be solved
The utility model aims to solve the problem that existing radiator structure there are radiating efficiencys that low, heat generates damage to peripheral devices
The disadvantages of.
(2) technical solution
In order to solve the above technical problems, the utility model proposes a kind of heat dissipation laminated construction, including being sequentially stacked at least
Two composite radiating layers, each composite radiating layer include the gum layer, metal foil layer and non-metallic layer being sequentially stacked.
Preferred embodiment according to the present utility model further includes protective layer, and the protective layer is coated on each composite radiating
The outside of layer.
Preferred embodiment according to the present utility model, the non-metallic layer are graphite alkenes material.
Preferred embodiment according to the present utility model further includes liquid-metal layer, is formed in metal foil layer and non-gold
Belong between layer.
Preferred embodiment according to the present utility model, the fusing point of the liquid-metal layer between 40 degree to 150 degree,
With a thickness of 1 μm~30 μm.
Preferred embodiment according to the present utility model, the liquid-metal layer is embedded in the metal foil layer towards described
It is flushed on the surface of non-metallic layer and with the surface.
Preferred embodiment according to the present utility model, the liquid-metal layer is embedded in the metal foil layer towards described
The surface of non-metallic layer, and interior sink into the surface.
Preferred embodiment according to the present utility model is equipped on the surface towards non-metallic layer of the metal foil layer
Sagging groove or pit, the groove or the pit regular array on the in-plane perpendicular to heat transfer direction.
Preferred embodiment according to the present utility model is set on the surface towards the non-metallic layer of the metal foil layer
There are sagging groove or pit, and is formed with capillary structure in the bottom and side of pit or groove.
The utility model proposes the method for manufacturing heat dissipation laminated construction and corresponding radiator simultaneously.
(3) beneficial effect
The utility model can improve significantly the radiating efficiency of radiator, and reduce heat for the damage of peripheral devices
Evil.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of the heat dissipation laminated construction of the utility model；
Fig. 2 is the structural schematic diagram of the second embodiment of the heat dissipation laminated construction of the utility model；
Fig. 3 is the structural schematic diagram of the 3rd embodiment of the heat dissipation laminated construction of the utility model；
Fig. 4 is the structural schematic diagram of the fourth embodiment of the heat dissipation laminated construction of the utility model；
Fig. 5 is the structural schematic diagram of the 5th embodiment of the heat dissipation laminated construction of the utility model；
Fig. 6 is the structural schematic diagram of the sixth embodiment of the heat dissipation laminated construction of the utility model；
Fig. 7 is the structural schematic diagram of the 7th embodiment of the heat dissipation laminated construction of the utility model；
Fig. 8 is the structural schematic diagram of the 8th embodiment of the heat dissipation laminated construction of the utility model.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to attached drawing, the utility model is described in further detail.
Fig. 1 is the structural schematic diagram of the first embodiment of the heat dissipation laminated construction of the utility model.As shown in Figure 1, this reality
With novel heat dissipation laminated construction from bottom to top (direction as shown in the figure, in practical application to stacked direction there is no limit) include
Gum layer 11, metal foil layer 12 and non-metallic layer 13.Wherein, the higher heat-conducting glue of thermal coefficient can be used in gum layer 11, such as
Silica gel etc..Various metals solid at room temperature including copper, aluminium, tin etc. can be used in metal foil layer 12.In the utility model, non-gold
Belong to layer 13 and preferably use graphite alkenes material, although carbon nano-tube film, graphite fibre etc. also can be used.
Preferred embodiment according to the present utility model, the heat dissipation laminated construction of the embodiment can also coat one in outermost layer
A protective layer (not shown) can be metal foil layer or pet layer, or be answered by metal foil layer with what pet layer was composed
Protective layer is closed, metal foil layer is, for example, aluminium foil layer.
According to the utility model, the thickness of gum layer 11 is preferably 5 μm~80 μm, and the thickness of metal foil layer 12 is at 10 μm
Between~100 μm, the thickness of non-metallic layer 13 is between 5 μm~80 μm.
When preparing above-mentioned heat dissipation laminated construction, gum layer 11 can be applied by coating, spraying etc. in a substrate, then
Metal foil layer 12 is pasted on gum layer.Finally, the coated non-metallic layer 13 on metal foil layer.
Fig. 2 is the structural schematic diagram of the second embodiment of the heat dissipation laminated construction of the utility model.As shown in Fig. 2, the reality
The heat dissipation laminated construction for applying example is composite construction, i.e., by the gum layer of first embodiment 11, metal foil layer 12 and non-metallic layer 13
As a composite radiating layer.The composite radiating lamination of embodiment includes the first composite radiating layer 1 and the second composite radiating as a result,
Layer 2.The gum layer of second composite radiating layer 2 is stacked and placed on the non-metallic layer of the first composite radiating layer 1.
The step of preparing above-mentioned heat dissipation lamination is similar with first embodiment, only completes the subsequent of the first composite radiating layer
The step of before continuous repetition.
The heat dissipation laminated construction of second embodiment due to the increase of the number of plies, makes to get reception heat compared to the first embodiment
The distance between the bottom (bottom end of heat dissipation laminated construction) of amount and the Air Interface (top of heat dissipation laminated construction) of heat dissipation increase
Add, is conducive to quick obtain of heat and is transmitted to the direction far from heating device, while heat radiation efficiency, is also beneficial to hair
The device on thermal device periphery plays a protective role.
It should be noted that the metal foil layer of the first composite radiating layer 1 and the second composite radiating layer 2 can be identical, it can also
With difference.For example, the metal foil layer of the first composite radiating layer 1 uses copper foil, the metal foil layer of the second composite radiating layer 2 uses aluminium
Foil.
Fig. 3 is the structural schematic diagram of the 3rd embodiment of the heat dissipation laminated construction of the utility model.As shown in figure 3, the reality
Applying example is further expanding on the basis of second embodiment.The laminated construction that radiates includes more than two composite radiating layer,
That is the first composite radiating layer 1, the second composite radiating layer 2 ..., N composite radiating layer n.N is natural number and is not less than 2.
The preparation method of the heat dissipation laminated construction of the embodiment also can refer to second embodiment and repeat to implement, therefore also no longer
It repeats.
By applying multiple composite radiating layers, the thickness of heat dissipation laminated construction can be made to increase significantly, can be had in this way
Heat is quickly transferred to the place far from heating device by effect ground, greatly improves the efficiency of heat dissipation, also can be by heat to periphery
The damage of device is preferably minimized.
Fig. 4 is the structural schematic diagram of the fourth embodiment of the heat dissipation laminated construction of the utility model.The embodiment and third
It is except the difference of embodiment, the metal foil layer used in adjacent composite radiating layer is different metal.
It can be seen that from 3rd embodiment and fourth embodiment, each composite radiating in more composite radiating layers of the utility model
Metal foil layer in layer can be identical, also can be different.Select different metal foil layers that can make in entire heat dissipation path
The variation of temperature gradient becomes special, can targetedly be designed according to different device needs as a result, so that dissipating
The thermal efficiency and heat obtain balance between the not extent of damage of peripheral devices.
Fig. 5 is the structural schematic diagram of the 5th embodiment of the heat dissipation laminated construction of the utility model.As shown in figure 5, in order to
Thermal resistivity caused by further decreasing between metal foil layer 12 and non-metallic layer 13 due to technique or material compatibility is high
The problem of, which is additionally arranged a liquid-metal layer 14 between metal foil layer 12 and non-metallic layer 13.So-called liquid gold
Belong to 14 metal or alloy for being referred to herein as slightly above presentation liquid at a temperature of room temperature, including gallium base bianry alloy, gallium Quito
First alloy, indium-base alloy or bismuth-base alloy.Such as gallium-indium alloy, gallium metal, gallium-indium-tin alloy, indium bismuth copper alloy etc..Due to
Liquid-metal layer 14 can all have after being melted down (fusing point is between 40 degree to 150 degree) with metal foil layer 12 and non-metallic layer 13
Good compatibility can be in close contact with the two, reduce thermal resistance, improve radiating efficiency.
The liquid-metal layer 14 of the embodiment can pass through plating after forming 12 structure of metal foil layer, powder spray, sink
The modes such as product are formed, and then spray nonmetallic materials, such as graphene in liquid-metal layer 14.The thickness of liquid-metal layer 14 can
To be 1 μm~30 μm.
It should be noted that the 5th embodiment of the utility model can also be extended to two composite radiating layers or multiple multiple
The structure of heat dissipating layer is closed, i.e., it can be applied to second into fourth embodiment as new embodiment.
Fig. 6 is the structural schematic diagram of the sixth embodiment of the heat dissipation laminated construction of the utility model.Not with the 5th embodiment
With, the embodiment liquid-metal layer 14 on the surface towards non-metallic layer 13 of metal foil layer 12 and with the surface
It flushes.As shown in Figure 6, it is believed that be equipped on the surface towards non-metallic layer 13 of metal foil layer 12 sagging groove or
Pit.Liquid-metal layer 14, which is then filled out, is overlying on the groove or pit.The groove or pit can be perpendicular to heat transfer direction
In-plane on regular array, also can irregularly arrange, the utility model is with no restriction.But in order to which heat passes in all directions
That leads is uniform, and the utility model is preferably regular array.
For be embedded with liquid-metal layer 14 metal foil layer 12, can by advance by compacting etc. in a manner of prepare, can also
Be formed on metal foil layer 12 by by the modes such as plating, spraying form liquid-metal layer 14.
Sixth embodiment is that liquid-metal layer 14 is restricted to inside radiator structure compared to the advantages of five embodiments,
It is not easy outflow and causes device failure.
Fig. 7 is the structural schematic diagram of the 7th embodiment of the heat dissipation laminated construction of the utility model.Not with sixth embodiment
With, the liquid-metal layer 14 embedded in metal foil layer 12 is not flushed with the surface towards non-metallic layer 13 of metal foil layer 12,
But the interior surface towards non-metallic layer 13 for sinking into metal foil layer 12.Compared to sixth embodiment, which can be used
Lesser amount of liquid metal reduces the cost of material, and liquid-metal layer 14 is more not easy to flow out or ooze out, more safe
Property.
Fig. 8 is the structural schematic diagram of the 8th embodiment of the heat dissipation laminated construction of the utility model.The embodiment with the 6th,
7th embodiment is similar, but does not have liquid-metal layer 14.Specifically, the embodiment is in metal foil layer 12 towards non-gold
Belong to and be again provided with sagging groove or pit on the surface of layer 13, and is formed with capillary in the bottom and side of pit or groove
Structure.The capillary structure may be formed by way of coining, by forming the capillary structure, so that nonmetallic materials, such as
Graphene, the energy after spraying to metal foil layer 12, has biggish contact surface, and the contact of two kinds of materials also more causes
It is close, to effectively improve thermal conductivity.
The heat dissipation laminated construction of the utility model can be applied to a variety of radiators, using the heat dissipation lamination knot of the utility model
The radiator of structure both is within the protection scope of the present invention.
Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, are not limited to this reality
With novel, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all include
It is within the protection scope of the utility model.
Claims (10)
1. a kind of heat dissipation laminated construction, including at least two composite radiating layers being sequentially stacked, each composite radiating layer includes successively
Stacked gum layer (11), metal foil layer (12) and non-metallic layer (13).
2. heat dissipation laminated construction as described in claim 1, which is characterized in that further include protective layer, the protective layer is coated on
The outside of each composite radiating layer.
3. heat dissipation laminated construction as described in claim 1, which is characterized in that the non-metallic layer (13) is graphite alkenes material
Material.
4. heat dissipation laminated construction as claimed any one in claims 1 to 3, which is characterized in that further include liquid-metal layer
(14), it is formed between metal foil layer (12) and non-metallic layer (13).
5. as claimed in claim 4 heat dissipation laminated construction, which is characterized in that the fusing point of the liquid-metal layer at 40 degree extremely
Between 150 degree, with a thickness of 1 μm~30 μm.
6. heat dissipation laminated construction as claimed in claim 4, which is characterized in that the liquid-metal layer (14) is embedded in the metal
It is flushed on the surface towards the non-metallic layer (13) of layers of foil (12) and with the surface.
7. heat dissipation laminated construction as claimed in claim 4, which is characterized in that the liquid-metal layer (14) is embedded in the metal
The surface towards the non-metallic layer (13) of layers of foil (12), and interior sink into the surface.
8. heat dissipation laminated construction as claimed in claims 6 or 7, which is characterized in that in the metal foil layer (12) towards non-
The surface of metal layer (13) is equipped with sagging groove or pit, and the groove or pit are perpendicular to the flat of heat transfer direction
Regular array on the direction of face.
9. heat dissipation laminated construction as claimed any one in claims 1 to 3, which is characterized in that the metal foil layer (12)
Surface towards the non-metallic layer (13) is equipped with sagging groove or pit, and in the bottom and side of pit or groove
It is formed with capillary structure.
10. a kind of radiator, the heat dissipation laminated construction including any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821010903.8U CN208798298U (en) | 2018-06-28 | 2018-06-28 | A kind of heat dissipation laminated construction and radiator |
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| CN201821010903.8U CN208798298U (en) | 2018-06-28 | 2018-06-28 | A kind of heat dissipation laminated construction and radiator |
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| CN208798298U true CN208798298U (en) | 2019-04-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108738284A (en) * | 2018-06-28 | 2018-11-02 | 深圳中讯源科技有限公司 | A kind of graphene composite radiating laminated construction and its manufacturing method |
-
2018
- 2018-06-28 CN CN201821010903.8U patent/CN208798298U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108738284A (en) * | 2018-06-28 | 2018-11-02 | 深圳中讯源科技有限公司 | A kind of graphene composite radiating laminated construction and its manufacturing method |
| CN108738284B (en) * | 2018-06-28 | 2024-06-07 | 深圳中讯源科技有限公司 | Graphene composite heat dissipation lamination structure and manufacturing method thereof |
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