CN204968327U - Compound fin of natural graphite aluminium - Google Patents
Compound fin of natural graphite aluminium Download PDFInfo
- Publication number
- CN204968327U CN204968327U CN201520708844.1U CN201520708844U CN204968327U CN 204968327 U CN204968327 U CN 204968327U CN 201520708844 U CN201520708844 U CN 201520708844U CN 204968327 U CN204968327 U CN 204968327U
- Authority
- CN
- China
- Prior art keywords
- aluminium
- layer
- graphite
- aluminium foil
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004411 aluminium Substances 0.000 title claims abstract description 54
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 54
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 150000001875 compounds Chemical class 0.000 title claims abstract description 30
- 229910021382 natural graphite Inorganic materials 0.000 title abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 57
- 239000010439 graphite Substances 0.000 claims abstract description 57
- 239000005030 aluminium foil Substances 0.000 claims abstract description 27
- 230000000694 effects Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The utility model provides a compound fin of natural graphite aluminium, relates to the the heating element's of electronic product heat dissipation and electromagnetic shield field. A compound fin of natural graphite aluminium, includes the aluminium foil layer and is located the aluminium foil layer graphite layer on two sides from top to bottom, the aluminium foil layer includes the aluminium base and is located the aluminium base alligatoring layer on two sides from top to bottom, alligatoring layer uniform distribution has the hole, hole and the interlock of each other of graphite layer are passed through to the alligatoring layer. The utility model discloses a compound fin of natural graphite aluminium adopts graphite layer and aluminium foil layer and passes through the mode of the mutual interlock of hole for the interface thermal resistance of aluminium foil and graphite is littleer, and Z axle orientation heat conductivity improves greatly, makes the heat conduction excellent performance of fin, has good electromagnetic shield effect, and is stretch -proofing, can buckle 180 degrees.
Description
Technical field
The present invention relates to heat radiation and the electromagnetic shielding field of the heat generating component of electronic product, particularly relate to a kind of native graphite/aluminium heat sink compound.
Background technology
Current CPU generates heat because of high-speed cruising, and CPU high-speed cruising is processing speed for improving its equipment and researches and develops.Mobile phone, flat computer, the demand of notebook and TV and display screen use amount increase, the demand of display screen high brightness makes light-emitting diode use amount increase, but because light-emitting diode uses more, its power consumption increases, this also adds the caloric value of large equipment, battery power consumption increases simultaneously, battery capacity also needs and then to improve, and makes display apparatus generate heat many, as effectively do not controlled heating because consuming energy large, not only high temperature can make CPU running Yin Gaore and when machine goes wrong or loss of function, also can make heat-producing device shortening in useful life.Display apparatus function increases now simultaneously, and use part also diversified, quantity is many and volume is less, mobile phone, the equipment such as flat computer are because of more and more miniaturized, and its free space is not enough, the distance of each part and assembly is nearer, is easy to the electromagnetic interference occurring mutually to ask.
In the market as radiative material electrographite thickness take as the leading factor with 25 μm, the electrographite of 40 μm can reach volume production, but conductive coefficient is not good, the electrographite of 70 μm can production not high, the thickness limits heat dispersion of electrographite, more caloric requirement solves, and in order to heat is reached from heat generating component " A " some the temperature that other point distributed and then reduced heat generating component, the body temperature of heat generating component " A " is significantly reduced.Therefore the heat conduction carrier of more high thermal conductivity coefficient and larger heat-sinking capability is needed.
Utility model content
The present invention provides a kind of native graphite/aluminium heat sink compound in order to solve the problems of the technologies described above, be the heat conduction carrier with excellent heat-conducting effect, also can provide the function of electromagnetic shielding.
A kind of native graphite/aluminium heat sink compound, it comprises aluminium foil layer and is positioned at the graphite linings of aluminium foil layer upper and lower surface; Described aluminium foil layer comprises aluminium base and is positioned at the roughened layer of aluminium base upper and lower surface; The surface uniform of described roughened layer is distributed with hole; Described roughened layer by hole and graphite linings engaged.
Described aluminium base, roughened layer and hole are integrated.
The thickness of described native graphite/aluminium heat sink compound is 28 μm ~ 2100 μm; The thickness of described aluminium foil layer is 8 μm ~ 100 μm; The surface area of described roughened layer is 3 ~ 8 times of aluminium base; Described graphite linings thickness is 10 μm ~ 1000 μm.
Described native graphite/aluminium heat sink compound is an Institutional Layer with graphite linings/aluminium foil layer/graphite linings, can form the structure of maximum 10 Institutional Layer compounds.
Advantage of the present invention: the mode that one, a kind of native graphite of the present invention/aluminium heat sink compound adopts graphite linings and aluminium foil layer to be mutually engaged by hole, the adhesive force of aluminium foil and graphite is increased greatly, make the interface resistance of aluminium foil and graphite less, the thermal conductivity of Z-direction improves greatly, make the heat conductivility of fin excellent, conductive coefficient is 400W/mK ~ 1200W/mK, and thermal diffusion coefficient is up to 200mm
2/ s ~ 700mm
2/ s; Due to adding of aluminium base, also there is excellent effectiveness, make each assembly in mini-plant effectively can prevent electromagnetic interference; Two, a kind of native graphite/aluminium heat sink compound of the present invention, stretch-proof, has very high mechanical property by bent 180 degree.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of native graphite/aluminium heat sink compound of embodiment;
Fig. 2 is the enlarged diagram of the aluminium foil layer of a kind of native graphite/aluminium heat sink compound of embodiment;
Wherein, 1-aluminium foil layer, 11-aluminium base, 12-roughened layer, 13-hole, 2-graphite linings.
Embodiment
In order to deepen, to understanding of the present utility model, to be described in further detail the utility model below in conjunction with drawings and Examples, this embodiment, only for explaining the utility model, not forming protection range of the present utility model and limiting.
Embodiment
As depicted in figs. 1 and 2, native graphite/aluminium heat sink compound that the preparation method of a kind of native graphite/aluminium heat sink compound of the present embodiment prepares, it comprises aluminium foil layer 1 and is positioned at the graphite linings 2 of aluminium foil layer 1 upper and lower surface; Described aluminium foil layer 1 comprises aluminium base 11 and is positioned at the roughened layer 12 of aluminium base upper and lower surface; The surface uniform of described roughened layer 12 is distributed with hole 13; Described roughened layer 12 is engaged by hole 13 and graphite linings 2; Described aluminium base, roughened layer and hole are integrated; The thickness of described native graphite/aluminium heat sink compound is 28 μm ~ 2100 μm; The thickness of described aluminium foil layer 1 is 8 μm ~ 100 μm; The surface area of described roughened layer 12 is 3 ~ 8 times of aluminium base 11; Described graphite linings 2 thickness is 10 μm ~ 1000 μm.
Hole on the aluminium foil layer of the present embodiment, can not only increase surface area, and the attachment of aluminium and graphite can also be made tightr, aluminium surface irregularity after alligatoring, surface area is very big, and hole distribution is at random, void shape is different, graphite can not come off and bend resistance because of hole grip
Graphite linings described in the present embodiment and the snap-in force of aluminium are greater than the snap-in force between graphite linings and graphite linings, thus add the adhesive force between graphite linings and aluminium base.
Native graphite described in the present embodiment/aluminium heat sink compound can adjust thickness arbitrarily in different demand, adjusts arbitrarily in technique tolerance band, to reach the requirement of different application aspect; Be that a unit number of plies can adjust thickness arbitrarily in different demand with graphite linings/aluminium foil layer/graphite linings, in technique tolerance band, be adjusted to maximum 10 layers, to reach the requirement of different application aspect.
In the present embodiment, graphite linings enters in hole that aluminium foil layer distributes in Z-direction, utilize each characteristic identical to conductive coefficient of aluminium, after graphite linings enters hole, not only strengthen the adhesive force difficult drop-off of graphite and aluminium, adding more because of aluminium, Z-direction thermal conduction characteristic by aluminium compensate for the not good shortcoming of graphite linings Z-direction thermal conduction characteristic, and the Z-direction heat conduction of whole heat sink compound was improved because of adding of aluminium.
Native graphite/aluminium the heat sink compound of the present embodiment, conductive coefficient is 400W/mK ~ 1200W/mK, and thermal diffusion coefficient is 200mm
2/ s ~ 700mm
2/ s; Because of adding of aluminium in heat sink compound, can fix with metal bolts in device assembles and be connected with ground terminal, and because of aluminium conductive characteristic form grounded circuit, and fin covers on the chip of equipment, directly cover the most disturbed chip, forming the best anti-High-frequency Interference ability of electromagnetic shielding effect is 60 ~ 80db (10MHz ~ 1GHz); Because of adding of aluminium base, the tension failure value in its X-Y direction (horizontal direction) is 50Kgf/mm
2~ 100Kgf/mm
2, being 50 times of current condition of equivalent thickness graphite flake, is 5 times of current condition of equivalent thickness electrographite sheet; No matter composite sheet thickness is how many, its bent angle is 180 degree, bent number of times is 50 times, and the fracture of native graphite/aluminium heat sink compound can not be made and cause heat dissipation to reduce, this be single graphite heat radiation fin cannot bear be greater than 90 degree bend and cannot bear repeatedly bend incomparable.
Above-described embodiment should not limit the utility model by any way, and the technical scheme that the mode that all employings are equal to replacement or equivalency transform obtains all drops in protection range of the present utility model.
Claims (4)
1. native graphite/aluminium heat sink compound, is characterized in that: it comprises aluminium foil layer and is positioned at the graphite linings of aluminium foil layer upper and lower surface; Described aluminium foil layer comprises aluminium base and is positioned at the roughened layer of aluminium base upper and lower surface; The surface uniform of described roughened layer is distributed with hole; Described roughened layer by hole and graphite linings engaged.
2. a kind of native graphite/aluminium heat sink compound according to claim 1, is characterized in that: described aluminium base, roughened layer and hole are integrated.
3. a kind of native graphite/aluminium heat sink compound according to claim 1, is characterized in that: the thickness of described native graphite/aluminium heat sink compound is 28 μm ~ 2100 μm; The thickness of described aluminium foil layer is 8 μm ~ 100 μm; The surface area of described roughened layer is 3 ~ 8 times of aluminium base; Described graphite linings thickness is 10 μm ~ 1000 μm.
4. a kind of native graphite/aluminium heat sink compound according to claim 1, is characterized in that: described native graphite/aluminium heat sink compound is an Institutional Layer with graphite linings/aluminium foil layer/graphite linings, can form the structure of maximum 10 Institutional Layer compounds.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520708844.1U CN204968327U (en) | 2015-09-14 | 2015-09-14 | Compound fin of natural graphite aluminium |
| PCT/CN2015/091641 WO2017045232A1 (en) | 2015-09-14 | 2015-10-10 | Natural graphite/aluminum composite heat sink |
| TW105204065U TWM525437U (en) | 2015-09-14 | 2016-03-23 | Natural graphite-aluminum composite heat sink fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520708844.1U CN204968327U (en) | 2015-09-14 | 2015-09-14 | Compound fin of natural graphite aluminium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204968327U true CN204968327U (en) | 2016-01-13 |
Family
ID=55063359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520708844.1U Active CN204968327U (en) | 2015-09-14 | 2015-09-14 | Compound fin of natural graphite aluminium |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN204968327U (en) |
| TW (1) | TWM525437U (en) |
| WO (1) | WO2017045232A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105142380A (en) * | 2015-09-14 | 2015-12-09 | 昆山奇华印刷科技有限公司 | Natural graphite/aluminium composite radiating fin and preparation method thereof |
| CN107872943A (en) * | 2016-09-23 | 2018-04-03 | 天津莱尔德电子材料有限公司 | Hot systems for one or more cooling heat sources out of electronic equipment |
| LU500101B1 (en) | 2021-04-29 | 2022-10-31 | Variowell Dev Gmbh | Multilayer Plate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107683067B (en) * | 2017-09-06 | 2020-06-02 | 北京小米移动软件有限公司 | Mobile terminal |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514297A (en) * | 2011-12-15 | 2012-06-27 | 烟台德邦科技有限公司 | Metal-clad graphite heat radiation composite material and preparation method thereof |
| CN103568390A (en) * | 2012-07-26 | 2014-02-12 | 苏州沛德导热材料有限公司 | Graphite composite metallic material |
| CN203032018U (en) * | 2012-08-29 | 2013-07-03 | 恒朗科技（天津）有限公司 | Adhesive film-free metal foil-graphite heat-conducting composite |
| CN203251562U (en) * | 2013-04-22 | 2013-10-23 | 孙利庆 | Heat dissipation sheet |
| CN204362488U (en) * | 2014-12-31 | 2015-05-27 | 昆山立茂国际贸易有限公司 | Compound fin |
-
2015
- 2015-09-14 CN CN201520708844.1U patent/CN204968327U/en active Active
- 2015-10-10 WO PCT/CN2015/091641 patent/WO2017045232A1/en active Application Filing
-
2016
- 2016-03-23 TW TW105204065U patent/TWM525437U/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105142380A (en) * | 2015-09-14 | 2015-12-09 | 昆山奇华印刷科技有限公司 | Natural graphite/aluminium composite radiating fin and preparation method thereof |
| CN107872943A (en) * | 2016-09-23 | 2018-04-03 | 天津莱尔德电子材料有限公司 | Hot systems for one or more cooling heat sources out of electronic equipment |
| LU500101B1 (en) | 2021-04-29 | 2022-10-31 | Variowell Dev Gmbh | Multilayer Plate |
| EP4082770A1 (en) | 2021-04-29 | 2022-11-02 | Variowell Development GmbH | Multilayer plate |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017045232A1 (en) | 2017-03-23 |
| TWM525437U (en) | 2016-07-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Suzhou City, Jiangsu province 215314 City Wanan town Kunshan City Week Road No. 368, room 3 Patentee after: Wonder photoelectric (Kunshan) Limited by Share Ltd Address before: Suzhou City, Jiangsu province 215314 City Wanan town Kunshan City Week Road No. 368, room 3 Patentee before: KUNSHAN QIHUA PRINTING TECHNOLOGY CO., LTD. |