CN103311596B - A kind of from radiating element and preparation method thereof - Google Patents
A kind of from radiating element and preparation method thereof Download PDFInfo
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- CN103311596B CN103311596B CN201210057311.2A CN201210057311A CN103311596B CN 103311596 B CN103311596 B CN 103311596B CN 201210057311 A CN201210057311 A CN 201210057311A CN 103311596 B CN103311596 B CN 103311596B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000002826 coolant Substances 0.000 claims abstract description 64
- 230000000274 adsorptive effect Effects 0.000 claims abstract description 47
- -1 alkoxyl tertiary amine Chemical class 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 25
- 239000002253 acid Substances 0.000 claims abstract description 22
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 20
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 24
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 claims description 20
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 claims description 18
- 150000001412 amines Chemical class 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000003463 adsorbent Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 11
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 9
- 244000060011 Cocos nucifera Species 0.000 claims description 9
- 239000003760 tallow Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- 125000003545 alkoxy group Chemical group 0.000 claims description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical class CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 230000001629 suppression Effects 0.000 abstract description 2
- 230000036760 body temperature Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 239000005643 Pelargonic acid Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011505 plaster Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PLLBRTOLHQQAQQ-UHFFFAOYSA-N 8-methylnonan-1-ol Chemical compound CC(C)CCCCCCCO PLLBRTOLHQQAQQ-UHFFFAOYSA-N 0.000 description 2
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 229960002446 octanoic acid Drugs 0.000 description 2
- 238000009783 overcharge test Methods 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 229940117927 ethylene oxide Drugs 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a kind of from radiating element, comprise device body and be positioned at the heat sink in device body, described heat sink comprises the adsorptive support be positioned in device body and the coolant be adsorbed on described adsorptive support; The fatty alcohol and water that the aliphatic acid that described coolant comprises alkoxyl tertiary amine that carbon number is 12-18, carbon number is 6-12, carbon number are 7-12.Meanwhile, the invention also discloses the above-mentioned preparation method from radiating element.Provided by the invention from radiating element good heat dissipation effect, can effectively suppression device body temperature rise, improve the life-span of device body and the fail safe of use.
Description
Technical field
The present invention relates to a kind of from radiating element and preparation method thereof.
Background technology
At present, the producing level of the mankind to the various energy is more and more higher, mankind's activity is made to become more and more convenient, but simultaneously, utilizing in process to the various energy, all inevitably produce amount of heat, the frictional heat etc. of such as electronic devices and components heating, mechanical part, wherein general with the heating problem in the electronic device course of work.And this part thermal reservoir can produce larger negative effect to device itself to a certain extent, even produce safety problem.
For the battery generally used in daily life, battery can constantly generate heat in the course of the work, and along with the savings of heat, battery temperature raises, and the rising of battery temperature can cause the decline of battery capacity, has had a strong impact on performance and the life-span of battery.And as electrokinetic cell owing in use needing the discharge and recharge often carrying out big current, the problem of battery-heating is more remarkable.Meanwhile, the improper operation of battery, such as excessively discharge and recharge, short circuit etc. also can cause battery temperature to raise rapidly.If heat can not dissipate timely, internal temperature of battery can be made sharply to increase, affect the stability of electrolyte, positive and negative electrode active material and binding agent, and then affect the chemical property of battery, even can cause battery explosion time serious, there is potential safety hazard.
In prior art, the mode that electronic device is lowered the temperature is generally air-cooled, but air-cooledly usually device can only be cooled to ambient temperature, and need to design device architecture in addition, and air-cooled cooling rate is slow, the cooling effect sharply risen for the temperature that such as problem such as over-charging of battery causes is poor, effectively can not prevent the safety problems such as the too high blast caused of battery temperature.
Summary of the invention
For overcoming the problem of device radiating effect difference in prior art, the invention provides a kind of from radiating element, its good heat dissipation effect, can the temperature rising of effective suppression device, improve the life-span of device and the fail safe of use.
Disclosed by the inventionly comprise device body from radiating element and be positioned at heat sink in device body, described heat sink comprises the adsorptive support be positioned in device body and the coolant be adsorbed on described adsorptive support; The fatty alcohol and water that the aliphatic acid that described coolant comprises alkoxyl tertiary amine that carbon number is 12-18, carbon number is 6-12, carbon number are 7-12.
Meanwhile, the invention also discloses the above-mentioned preparation method from radiating element, comprise and coolant is attached on adsorptive support, obtain heat sink; Then heat sink is arranged in device body; The fatty alcohol and water that the aliphatic acid that described coolant comprises alkoxyl tertiary amine that carbon number is 12-18, carbon number is 6-12, carbon number are 7-12.
The above-mentioned preparation method from radiating element also can for be arranged in device body by adsorptive support; Then coolant is attached on adsorptive support; The fatty alcohol and water that the aliphatic acid that described coolant comprises alkoxyl tertiary amine that carbon number is 12-18, carbon number is 6-12, carbon number are 7-12.
In the present invention, the above-mentioned adsorptive support being adsorbed with coolant is formed at device body surface, and when device body adstante febre, the heat sink being positioned at device body surface can rapidly by heat absorption, effectively reduce the temperature of device body, ensure that serviceability and the fail safe of device body.
Accompanying drawing explanation
Fig. 1 is the vertical view of radiating element provided by the invention.
Fig. 2 is the cutaway view of radiating element provided by the invention.
Wherein, 1, device body; 2, heat sink; 3, heat conduction glue-line.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Disclosed by the inventionly comprise device body from radiating element and be positioned at heat sink in device body, described heat sink comprises the adsorptive support be positioned in device body and the coolant be adsorbed on described adsorptive support; The fatty alcohol and water that the aliphatic acid that described coolant comprises alkoxyl tertiary amine that carbon number is 12-18, carbon number is 6-12, carbon number are 7-12.
In coolant disclosed by the invention, the carbon number that described alkoxyl tertiary amine has is 12-18, under preferable case, the ethyoxyl tertiary amine of the alkoxyl tertiary amine adopted in the present invention to be carbon number be 12-18, concrete, one or more preferably in ethyoxyl tallow amine, ethyoxyl coconut amine, ethyoxyl ether amine, ethoxy propylene diamines of described alkoxyl tertiary amine.Preferred further, in alkoxyl tertiary amine, alkoxy group content is 2-10mol/mol.When the content of alkoxyl in alkoxyl tertiary amine is in above-mentioned scope, more favourable to raising radiating effect.
Above-mentioned various alkoxyl tertiary amine all can be the known material of chemical field, and by being commercially available, such as described ethyoxyl coconut amine is also known as ethoxylation coconut fatty amine or coconut amine APEO.For transparency liquid, clear solution can be formed in mineral oil, benzene, tetraethylene-glycol; Turbid solution is formed in water.Cationic surfactant.Described ethyoxyl coconut amine is typically used as initiation material in chemical industry, as manufactured dyestuff and textile auxiliary agent, mineral oil additive, pesticide, agricultural chemicals, cosmetic base or adhesive etc.Specifically can be obtained by coconut amine and ethyleneoxide addition.
In the present invention, the content of the alkoxyl tertiary amine in coolant can change in a big way, and under preferable case, in volume parts, the content of alkoxyl tertiary amine is 0.02-2%, more preferably 0.2-2%.Be appreciated that above-mentioned content is the total amount of various alkoxyl tertiary amine when to comprise in above various material multiple for the alkoxyl tertiary amine adopted.
Described carbon number is the aliphatic acid of 6-12 is commonly known in the art, and under preferable case, described aliphatic acid is n-nonanoic acid and/or sad.As known to those skilled in the art, sad can be caprylic acid and/or isooctyl acid, adopts caprylic acid or isooctyl acid in the present invention.Same, n-nonanoic acid adopts pelargonic acid and/or different n-nonanoic acid.Above-mentioned sad or n-nonanoic acid is all by being commercially available.
The content of above-mentioned aliphatic acid in coolant can change equally in a big way, and under preferable case, in volume parts, the content of aliphatic acid is 0.005-0.71%, more preferably 0.05-0.71%.Same, when to comprise in above various material multiple for the aliphatic acid adopted, above-mentioned content is the total amount of various aliphatic acid.
In coolant disclosed by the invention, the fatty alcohol of the fatty alcohol adopted to be carbon number be 7-12, be commonly understood in the art to higher aliphatic, in the present invention, under preferable case, described fatty alcohol is octanol and/or decyl alcohol, as this area is known, octanol can be n-octyl alcohol and/or isooctanol, and decyl alcohol can be Decanol and/or isodecanol.
The content of above-mentioned fatty alcohol in coolant can change equally in a big way, and under preferable case, in volume parts, the content of fatty alcohol is 0.005-0.29%, more preferably 0.05-0.29%.More preferably in situation, described fatty alcohol comprises n-octyl alcohol and Decanol, is 100 parts in the volume of fatty alcohol, and in described fatty alcohol, the content of n-octyl alcohol is 40-60%, and the content of Decanol is 60-40%.Same, when to comprise in above various material multiple for the fatty alcohol adopted, above-mentioned content is the total amount of various fatty alcohol.
Meanwhile, also containing water in above-mentioned coolant, under preferable case, in volume parts, the content of water is 97-99.7%.
In coolant disclosed by the invention, there is the alkoxyl tertiary amine of specific quantity carbon number, aliphatic acid and fatty alcohol and make it have certain chain length.When in the water that alkoxyl tertiary amine, aliphatic acid and fatty alcohol are scattered in, aqueous dispersion can be become a large amount of little water droplets, little water droplet outer wrap alkoxyl tertiary amine, aliphatic acid and fatty alcohol molecules, its organic segment stretches to the direction away from little water droplet, when the organic segment of this part touches heat, rapidly heat absorption can be passed to little water droplet, make little water droplet can reach the state of vaporization, thus the heat on organic segment is taken away.And outer wrap has the little water droplet of organic molecule to be scattered in water, when little water droplet reaches the state of vaporization, heat is absorbed by the water of other parts again, make the little water droplet being about to vaporization be returned to stable liquid state, and heat is taken away rapidly.The evaporation/condensation state change process of this circulation of coolant inside absorbs a large amount of energy and result in and dispel the heat fast, thus can carry out radiating and cooling fast to device body.
Further, in described coolant, also comprise lower alcohol, described lower alcohol be selected from ethanol, propyl alcohol or butanols one or more; In the volume parts of coolant, in described coolant, the content of lower alcohol is less than 0.5%.Being conducive on the one hand the dispersed of each component in coolant by adding coolant, simultaneously to raising heat transfer, improving radiating effect highly beneficial.
For the coolant adopted in the present invention, under preferable case, its proportion is 0.98-1g/cm
3, pH is 6.9-7.1.When coolant meets above-mentioned condition, favourable to improving the attachment of coolant on adsorptive support and expanding its scope of application.
According to the present invention, when the content of the coolant on adsorptive support changes in a big way, all its radiating effect can be ensured.Under preferable case, on described adsorptive support, the content of coolant is 1.5-5g/cm
3.Its radiating effect can be made better when the content of the coolant in adsorptive support is in above-mentioned scope, simultaneously more stable on coolant energy adsorptive support.
Adsorptive support disclosed by the invention can be the various material with adsorptivity of the prior art, under preferable case, described adsorptive support is adsorbent fibers cloth, can be such as blotting paper or absorbent wool, above-mentioned blotting paper or absorbent wool are adsorptivity string, well can ensure coolant dispersion attachment wherein.Above-mentioned adsorptive support is by being commercially available.Understandable, in order to reach object of the present invention, those skilled in the art can adopt and other materials like above-mentioned adsorbent fibers dry goods.
For adsorptive support, its thickness can change in a big way, and under preferable case, the thickness of described adsorptive support is 0.4-2mm.
Under further preferable case, the surface density of described adsorptive support is 77-87g/m
2.Inventor finds, when the content of surface density coolant in above-mentioned scope and on adsorptive support of the adsorptive support adopted is 1.5-5g/cm
3time, absorption coolant that can be more stable, ensures radiating effect, meanwhile, effectively can prevent the vaporization in coolant radiating and cooling process, substantially increase the useful life of heat sink.
As to further improvement of the present invention, between the adsorptive support from radiating element disclosed by the invention and device body, there is heat conduction glue-line.By this heat conduction glue-line by heat sink and device body secure engagement, meanwhile, this heat conduction glue-line add the decline that can't cause heat dispersion.
In order to better ensure radiating effect, under preferable case, described heat-conducting glue is glass fibre, and its conductive coefficient is 1.2-1.4W/m-k.Heat sink device body only need bond by above-mentioned heat conduction glue-line, and to the not too large requirement of its thickness, under preferable case, the thickness of described heat conduction glue-line is 0.05-0.4mm.Above-mentioned heat-conducting glue is by being commercially available.
Disclosed by the invention very wide from radiating element coverage, wherein device body can be the various devices needing heat radiation, such as battery, wiring board, LED etc.
Meanwhile, the invention also discloses the above-mentioned preparation method from radiating element, comprise and coolant is attached on adsorptive support, obtain heat sink; Then heat sink is arranged in device body; Described coolant is aforesaid coolant.
Concrete, first according to the area of adsorptive support, obtain certain coolant, then coolant is attached on adsorptive support by the method for dripping or soak, form heat sink.Wherein, the consumption of the adsorptive support selected and coolant and various material as previously mentioned, does not repeat them here.
Then the heat sink of acquisition is arranged at device body can obtain described from radiating element.
Further, in order to improve the stability from radiating element, also can heat conduction glue-line being set between heat sink and device body, being specifically as follows: in device body, forming heat conduction glue-line, then heat sink being attached on heat conduction glue-line.The method that device body is formed heat conduction glue-line is known, and as said, heat-conducting glue is coated in device body, or adopts heat conduction adhesive plaster, is sticked in device body by heat conduction adhesive plaster.
Understandable, those skilled in the art can also adopt preparation method similar to the above, such as: adsorptive support is arranged in device body; Then coolant is attached on adsorptive support.The described method be arranged at by adsorptive support in device body is identical with preceding method with the method be attached on adsorptive support by coolant.
Equally, can also arrange heat conduction glue-line between adsorptive support and device body, concrete grammar as previously mentioned.After device body arranges heat conduction glue-line, adsorptive support is covered on heat conduction glue-line, then coolant is adsorbed on adsorptive support.
Can prepare sub-radiating element disclosed by the invention by above method, its concrete structure as depicted in figs. 1 and 2.Wherein, 1 surface attachment as device body has heat conduction glue-line 3, and heat conduction glue-line surface adhesion has heat sink 2.Device body 1 is sent out heat thermogenetic and is conducted to heat sink 2 through heat conduction glue-line 3, carries out cooling heat dissipation by heat sink 2.
Understandable, said structure be optimal way from radiating element, according to the present invention, heat conduction glue-line 3 also can be removed, and namely describedly only includes device body 1 from radiating element and is positioned at the heat sink 2 on its surface.
For above-mentioned from radiating element, under preferable case, heat sink 2 area is less than the surface area of device body 1.Further, when containing heat conduction glue-line 3, the area of heat conduction glue-line 3 is not less than the area of heat sink 2, and is less than the surface area of device body 1.Be more preferably the area equation of heat conduction glue-line 3 and heat sink 2.
Below using lithium rechargeable battery as device body, by embodiment, the present invention is further detailed.
Embodiment 1
The present embodiment for illustration of disclosed by the invention from radiating element and preparation method thereof.
Be 0.9g/cm by 12g proportion
3, pH be 7.2 coolant (ethoxyl content of 0.4 parts by volume be the ethyoxyl tallow amine of 2mol/mol, the water of the pelargonic acid of 0.01 parts by volume, the n-octyl alcohol of 0.29 parts by volume and 99.3 parts by volume) (surface density is 77g/m to drip to the adsorbent fibers cloth being of a size of 40 × 30 × 2mm
2) on, obtain heat sink A1.
Battery is reached 4.2V with 850mA constant current charge to voltage, and then with 4.2V constant voltage charge, when electric current reduces to 34mA, normal charge terminates.Shelve 10min.
Heat sink A1 is fixed on the side of above-mentioned battery, obtains from radiating element S1.
Embodiment 2
The present embodiment for illustration of disclosed by the invention from radiating element and preparation method thereof.
Be 0.99g/cm by 8g proportion
3, pH be 6.5 coolant (ethoxyl content of 0.04 parts by volume be the ethyoxyl tallow amine of 10mol/mol, the water of the isooctyl acid of 0.66 parts by volume, the isodecanol of 0.05 parts by volume and 99.25 parts by volume) (surface density is 87g/m to drip to the adsorbent fibers cloth being of a size of 75 × 70 × 1mm
2) on, obtain heat sink A2.
Battery is reached 4.2V with 850mA constant current charge to voltage, and then with 4.2V constant voltage charge, when electric current reduces to 34mA, normal charge terminates.Shelve 10min.
Heat sink A2 is fixed on the side of above-mentioned battery, obtains from radiating element S2.
Embodiment 3
The present embodiment for illustration of disclosed by the invention from radiating element and preparation method thereof.
Be 1g/cm by 1.8g proportion
3, pH be 7 coolant (ethoxyl content of 1 parts by volume be the ethyoxyl coconut amine of 4mol/mol, the water of the n-octyl alcohol of the pelargonic acid of 0.6 parts by volume, 0.2 parts by volume, the isobutanol of 0.2 parts by volume and 98 parts by volume) (surface density is 80g/m to drip to the adsorbent fibers cloth being of a size of 40 × 30 × 0.5mm
2) on, obtain heat sink A3.
Battery is reached 4.2V with 850mA constant current charge to voltage, and then with 4.2V constant voltage charge, when electric current reduces to 34mA, normal charge terminates.Shelve 10min.
Heat sink A3 is fixed on the side of above-mentioned battery, obtains from radiating element S3.
Embodiment 4
The present embodiment for illustration of disclosed by the invention from radiating element and preparation method thereof.
Battery is reached 4.2V with 850mA constant current charge to voltage, and then with 4.2V constant voltage charge, when electric current reduces to 34mA, normal charge terminates.Shelve 10min.
Adhere at battery surface and be of a size of the heat conduction glue-line (conductive coefficient is the glass fibre of 1.3W/m-k) of 40 × 30 × 0.4mm, then by the adsorbent fibers cloth that is of a size of 40 × 30 × 0.5mm, (surface density is 80g/m
2) adhere on heat conduction glue-line.
Be 1g/cm by 2.4g proportion again
3pH be 7 coolant (ethoxyl content of 2 parts by volume be the ethyoxyl coconut amine of 6mol/mol, the water of the Decanol of the n-octyl alcohol of the pelargonic acid of 0.6 parts by volume, 0.1 parts by volume, 0.1 parts by volume, the ethanol of 0.2 parts by volume and 97 parts by volume) drip on adsorbent fibers cloth, obtain from radiating element S4.
Embodiment 5
The present embodiment for illustration of disclosed by the invention from radiating element and preparation method thereof.
Battery is reached 4.2V with 850mA constant current charge to voltage, and then with 4.2V constant voltage charge, when electric current reduces to 34mA, normal charge terminates.Shelve 10min.
Adhere at battery surface and be of a size of the heat conduction glue-line (conductive coefficient is the glass fibre of 1.3W/m-k) of 40 × 30 × 0.2mm, then by the adsorbent fibers cloth that is of a size of 40 × 30 × 0.5mm, (surface density is 80g/m
2) adhere on heat conduction glue-line.
Be 1g/cm by 3g proportion again
3pH be 7 coolant (ethoxyl content of 2 parts by volume be the ethyoxyl tallow amine of 6mol/mol, the water of the n-octyl alcohol of the pelargonic acid of 0.6 parts by volume, 0.2 parts by volume, the isopropyl alcohol of 0.2 parts by volume and 97 parts by volume) drip on adsorbent fibers cloth, obtain from radiating element S5.
Embodiment 6
The present embodiment for illustration of disclosed by the invention from radiating element and preparation method thereof.
The method identical with embodiment 5 is adopted to prepare from radiating element, unlike, the surface density of the adsorbent fibers cloth of employing is 50g/m
2, obtain from radiating element S6.
Embodiment 7
The present embodiment for illustration of disclosed by the invention from radiating element and preparation method thereof.
The method identical with embodiment 5 is adopted to prepare from radiating element, unlike, on adsorbent fibers cloth, the content of coolant is 5g, obtains from radiating element S7.
Comparative example 1
It is disclosed by the invention from radiating element that this comparative example is used for comparative illustration.
Respectively 3 batteries are reached 4.2V with 850mA constant current charge to voltage, then with 4.2V constant voltage charge, when electric current reduces to 34mA, normal charge terminates.Shelve 10min.As device D1, D2 and D3.
Heat dispersion is tested
To above-mentioned prepare overcharge test from radiating element S1-S7 and D1-D3, method of testing is as follows:
Be 15-35 DEG C in temperature, under relative humidity is 45-85%, atmospheric pressure is the environmental condition of 86-106kPa, carry out overcharge safety test to above-mentioned from radiating element.Method of testing is as follows:
The output current in constant current constant voltage source is adjusted to the current value 3.4A, the output voltage that overcharge test and is adjusted to 5V.
The thermocouple probe of thermometer is fixed on high temperature adhesive plaster the middle that device body (battery) do not adhere to heat sink side, the asbestos of thick about 12 millimeters that one deck loosens will be wrapped up from radiating element surface uniform and when wrapping up, asbestos will be compacted to 6-7 millimeters thick, then the power supply in constant current constant voltage source is closed, connect tested device body (battery), universal instrument and constant current constant voltage source with wire, put in safety cabinet.
Open the power supply in constant current constant voltage source, timing simultaneously, carries out overcharge to battery; The temperature and time (every 10-30S records a temperature) of registering device body (battery), observes whether battery breach, leakage occur, is smoldered, exploded, phenomenon on fire simultaneously.
When charging current is down to close to 34mA, or be down to lower than peak value 10 DEG C when temperature, or at the end of the phenomenon such as on fire of blasting, test terminate, with being as the criterion of occurring at first in above-mentioned three kinds of situations.
The test result obtained inserts table 1.
Table 1
| Sample | Temperature peak time/min | Peak temperature/DEG C | Stopping temperature/DEG C | Dwell time/min | Whether explode |
| S1 | 39 | 35.3 | 30.3 | 65 | No |
| S2 | 38 | 35.7 | 29 | 62 | No |
| S3 | 30 | 26.9 | 26.5 | 60 | No |
| S4 | 76 | 26.4 | 25.9 | 140 | No |
| S5 | 71 | 25.1 | 20.4 | 182 | No |
| S6 | 79 | 32.4 | 27 | 130 | No |
| S7 | 77 | 30.9 | 25 | 132 | No |
| D1 | 69 | 118.9 | / | 69 | Be |
| D2 | 75 | 127.2 | / | 75 | Be |
| D3 | 67 | 120.5 | / | 67 | Be |
As can be seen from the test result of table 1, D1-D3, can be persistently overheating under above-mentioned 5V voltage overcharges condition, and when temperature arrives 118.9 DEG C, 127.2 DEG C and 120.5 DEG C respectively, blast.And the test result as S1-S7 can be found out, disclosed by the invention in radiating element, battery as device body is overcharging under condition, not there is significant change in battery temperature, wherein the highest with the temperature of S2, be 35.7 DEG C, but this temperature is for lithium rechargeable battery, belongs to safer scope.
The test result of contrast S1, S2 and S3 is known, when being not more than the lower alcohol of 4 containing carbon number in coolant, very favourable to raising radiating effect.
Meanwhile, the test result of contrast S5, S6 and S7 can be found out, when the surface density of the adsorptive support adopted is at 77-87g/m
2in and on adsorptive support the content of coolant be 1.5-5g/cm
3time, absorption coolant that can be more stable, makes radiating effect better.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. from a radiating element, it is characterized in that, comprise device body and be positioned at the heat sink in device body, described heat sink comprises the adsorptive support be positioned in device body and the coolant be adsorbed on described adsorptive support; The fatty alcohol and water that the aliphatic acid that described coolant comprises alkoxyl tertiary amine that carbon number is 12-18, carbon number is 6-12, carbon number are 7-12; In described coolant, in volume parts, the content of alkoxyl tertiary amine is 0.2-2%, and the content of aliphatic acid is 0.05-0.71%, and the content of fatty alcohol is 0.05-0.29%, and the content of water is 97-99.7%; Described alkoxyl tertiary amine be selected from ethyoxyl tallow amine, ethyoxyl coconut amine, ethyoxyl ether amine, ethoxy propylene diamines one or more, described aliphatic acid is n-nonanoic acid and/or sad, and described fatty alcohol is octanol and/or decyl alcohol.
2. according to claim 1 from radiating element, it is characterized in that, in alkoxyl tertiary amine, alkoxy group content is 2-10mol/mol.
3. according to claim 1 from radiating element, it is characterized in that, described fatty alcohol comprises n-octyl alcohol and Decanol; In the volume parts of fatty alcohol, the content of described n-octyl alcohol is 40-60%, and the content of Decanol is 60-40%.
4. according to claim 1 from radiating element, it is characterized in that, in described coolant, also comprise lower alcohol, described lower alcohol be selected from ethanol, propyl alcohol or butanols one or more; In volume parts, in described coolant, the content of lower alcohol is less than 0.5%.
5. according to claim 1 from radiating element, it is characterized in that, the proportion of described coolant is 0.98-1g/cm
3, pH is 6.9-7.1.
6. according to claim 1 from radiating element, it is characterized in that, on described adsorptive support, the content of coolant is 1.5-5g/cm
3.
7. according in claim 1 or 6 described in any one from radiating element, it is characterized in that, adsorptive support is adsorbent fibers cloth, and its surface density is 77-87g/m
2.
8. according to claim 7 from radiating element, it is characterized in that, the thickness of described adsorptive support is 0.4-2mm.
9. according to claim 1 from radiating element, it is characterized in that there is between described adsorptive support and device body heat conduction glue-line.
10. according to claim 9 from radiating element, it is characterized in that, described heat-conducting glue is glass fibre, and its conductive coefficient is 1.2-1.4W/m-k.
11. according to claim 9 or 10 from radiating element, it is characterized in that, the thickness of described heat conduction glue-line is 0.05-0.4mm.
12. is according to claim 1 from radiating element, it is characterized in that, described device body is the one in battery, wiring board, LED.
13., as the preparation method from radiating element in claim 1-12 as described in any one, comprise and are attached on adsorptive support by coolant, obtain heat sink; Then heat sink is arranged in device body; The fatty alcohol and water that the aliphatic acid that described coolant comprises alkoxyl tertiary amine that carbon number is 12-18, carbon number is 6-12, carbon number are 7-12.
14. preparation methods according to claim 13, is characterized in that, device body is formed heat conduction glue-line, are then attached on heat conduction glue-line by heat sink.
15., as the preparation method from radiating element in claim 1-12 as described in any one, comprise and are arranged in device body by adsorptive support; Then coolant is attached on adsorptive support; The fatty alcohol and water that the aliphatic acid that described coolant comprises alkoxyl tertiary amine that carbon number is 12-18, carbon number is 6-12, carbon number are 7-12.
16. preparation methods according to claim 15, is characterized in that, device body is formed heat conduction glue-line, are then attached on heat conduction glue-line by adsorptive support.
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| JP3914901B2 (en) * | 1992-10-01 | 2007-05-16 | 株式会社日立製作所 | Electric vehicle cooling system |
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| CN101522789A (en) * | 2006-10-05 | 2009-09-02 | 株式会社钟化 | Curable composition |
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