CN103369912A - Self-heat dissipation device and manufacture method thereof - Google Patents
Self-heat dissipation device and manufacture method thereof Download PDFInfo
- Publication number
- CN103369912A CN103369912A CN2012100866560A CN201210086656A CN103369912A CN 103369912 A CN103369912 A CN 103369912A CN 2012100866560 A CN2012100866560 A CN 2012100866560A CN 201210086656 A CN201210086656 A CN 201210086656A CN 103369912 A CN103369912 A CN 103369912A
- Authority
- CN
- China
- Prior art keywords
- frame
- device body
- radiating element
- heat
- heat sink
- 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.)
- Granted
Links
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
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a self-heat dissipation device comprising a device body, an edge frame which is positioned on the surface of the device body, and a waterproof sealing layer which is positioned on the edge frame, wherein a sealed heat dissipation cavity is formed together by the waterproof sealing layer, the edge frame and the device body; a heat dissipation member is arranged in the heat dissipation cavity; the heat dissipation member comprises an adsorptive carrier which is positioned on the device body and a heat dissipation agent which is adsorbed on the adsorptive carrier. The heat dissipation agent comprises an alkyloxy tertiary amine having 12 to 18 carbon atoms, an aliphatic acid having 6 to 12 carbon atoms, a fatty alcohol having 7 to 12 carbon atoms, and a water. The invention also discloses a manufacture method of the self-heat dissipation device. The self-heat dissipation device provided by the invention is advantageous in that the self-heat dissipation device is good in heat dissipation effect, and the device body is prolonged in service life and improved in utilization safety; the self-heat dissipation effect is still excellent after the self-heat dissipation device is used for many times.
Description
Technical field
The present invention relates to a kind of from radiating element and preparation method thereof.
Background technology
At present, human utilize degree more and more higher to the various energy, make mankind's activity become more and more convenient, but simultaneously, utilizing in the process the various energy, all inevitably can produce amount of heat, such as the frictional heat of electronic devices and components heatings, mechanical part etc., wherein general with the heating problem in the electronic device course of work.And this part heat savings can produce larger negative effect to device itself to a certain extent, even produces safety problem.
As example, battery can constantly generate heat in the course of the work with the battery that generally uses in the daily life, 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 often to carry out discharging and recharging of large electric current, the problem of battery-heating is more remarkable.Simultaneously, the improper operation of battery also can cause battery temperature to raise rapidly such as excessively discharge and recharge, short circuit etc.If heat can not dissipate timely, internal temperature of battery is sharply risen, affect the stability of electrolyte, positive and negative electrode active material and binding agent, and then affect the chemical property of battery, when serious even can cause battery explosion, there is potential safety hazard.
In the 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 in addition device architecture to be designed, and air-cooled cooling rate is slow, poor for the cooling effect that the temperature that causes such as problems such as over-charging of battery sharply rises, can not effectively prevent the too high safety problems such as blast that cause of battery temperature.
Summary of the invention
For overcoming the poor problem of device radiating effect in the prior art, the invention provides a kind ofly from radiating element, it is from good heat dissipation effect, and temperature that can the establishment device rises; And should be after radiating element repeatedly recycles, from radiating effect still excellence.
Disclosed by the inventionly comprise device body from radiating element, described device body surface is provided with frame, described frame and device body form the heat radiation chamber, described heat radiation is provided with heat sink in the chamber, and described heat sink comprises and is positioned at the adsorptive support on the device body and is adsorbed in coolant on the described adsorptive support; Described coolant comprises that carbon number is the alkoxyl tertiary amine of 12-18, the aliphatic acid that carbon number is 6-12, the fatty alcohol and water that carbon number is 7-12.
Simultaneously, the invention also discloses above-mentioned preparation method from radiating element, be included in the device body surface and make frame, make frame and device body form the heat radiation chamber; Coolant is attached on the adsorptive support, obtains heat sink; Then heat sink is arranged in the heat radiation chamber on the device body; Described coolant comprises that carbon number is the alkoxyl tertiary amine of 12-18, the aliphatic acid that carbon number is 6-12, the fatty alcohol and water that carbon number is 7-12.
Above-mentioned preparation method from radiating element also can for making frame on the device body surface, make frame and device body form the heat radiation chamber; Then adsorptive support is arranged in the heat radiation chamber on the device body, coolant is attached on the adsorptive support; Described coolant comprises that carbon number is the alkoxyl tertiary amine of 12-18, the aliphatic acid that carbon number is 6-12, the fatty alcohol and water that carbon number is 7-12.
Among the present invention, above-mentioned absorption has the adsorptive support of coolant to be formed at the device body surface, and when the device body adstante febre, the heat sink that is positioned at the device body surface can be rapidly with heat absorption, effectively reduce the temperature of device body, guaranteed serviceability and the fail safe of device body; Simultaneously, said structure can improve the number of times that recycles of heat sink greatly under the prerequisite that guarantees radiating effect, make this after radiating element repeatedly recycles, and is still excellent from radiating effect.
Description of drawings
Fig. 1 is the vertical view from radiating element provided by the invention.
Fig. 2 is that the A-A from radiating element provided by the invention is to cutaway view.
Wherein, 1, device body; 2, heat sink; 3, heat conduction glue-line; 4, frame; 5, waterproof sealing layer.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, 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, is not intended to limit the present invention.
Disclosed by the inventionly comprise device body, be positioned at the frame on device body surface and be positioned at waterproof sealing layer on the frame from radiating element, the airtight heat radiation chamber of the common formation of described waterproof sealing layer and frame and device body, described heat radiation is provided with heat sink in the chamber, and described heat sink comprises and is positioned at the adsorptive support on the device body and is adsorbed in coolant on the described adsorptive support.
Coolant disclosed by the invention comprises that carbon number is the alkoxyl tertiary amine of 12-18, the aliphatic acid that carbon number is 6-12, the fatty alcohol and water that carbon number is 7-12.
Wherein, the carbon number that described alkoxyl tertiary amine has is 12-18, under the preferable case, the alkoxyl tertiary amine that adopts among the present invention is that carbon number is the ethyoxyl tertiary amine of 12-18, concrete, described alkoxyl tertiary amine is selected from one or more in ethyoxyl tallow amine, ethyoxyl coconut amine, ethyoxyl ether amine, the ethoxy propylene diamines.Further preferred, alkoxy group content is 2-10mol/mol in the alkoxyl tertiary amine.When the content of alkoxyl in the alkoxyl tertiary amine is in above-mentioned scope, more favourable to improving radiating effect.
Above-mentioned various alkoxyl tertiary amine all can be the known material of chemical field, can be commercially available, and for example described ethyoxyl coconut amine claims again ethoxylation coconut fatty amine or coconut amine APEO.Be transparency liquid, in mineral oil, benzene, tetraethylene-glycol, can form clear solution; In water, form turbid solution.Cationic surfactant.Described ethyoxyl coconut amine is typically used as initiation material in chemical industry, as making dyestuff and textile auxiliary agent, mineral oil additive, pesticide, agricultural chemicals, cosmetic base or adhesive etc.Specifically can be made by coconut amine and ethyleneoxide addition.
Among the present invention, the content of the alkoxyl tertiary amine in the coolant can change in a big way, and under the 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 amines when the alkoxyl tertiary amine that adopts comprises multiple in the above various material.
Described carbon number is that the aliphatic acid of 6-12 is commonly known in the art, and under the preferable case, described aliphatic acid is n-nonanoic acid and/or sad.Just as is known to the person skilled in the art dawn, sadly can be caprylic acid and/or isooctyl acid, adopt caprylic acid or the isooctyl acid all can among the present invention.Same, n-nonanoic acid adopts pelargonic acid and/or different n-nonanoic acid all can.Above-mentioned sad or n-nonanoic acid all can be commercially available.
The content of above-mentioned aliphatic acid in coolant can change in a big way equally, and under the preferable case, in volume parts, the content of aliphatic acid is 0.005-0.71%, more preferably 0.05-0.71%.Same, when the aliphatic acid that adopts comprised multiple in the above various material, above-mentioned content was the total amount of various aliphatic acid.
In the coolant disclosed by the invention, the fatty alcohol that adopts is that carbon number is the fatty alcohol of 7-12, be commonly understood in the art to higher aliphatic, among the present invention, under the preferable case, described fatty alcohol is octanol and/or decyl alcohol, knows such as this area, 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 in a big way equally, and under the preferable case, in volume parts, the content of fatty alcohol is 0.005-0.29%, more preferably 0.05-0.29%.More preferably in the situation, described fatty alcohol comprises n-octyl alcohol and Decanol, and take the volume of fatty alcohol as 100 parts, the content of n-octyl alcohol is 40-60% in the described fatty alcohol, and the content of Decanol is 60-40%.Same, when the fatty alcohol that adopts comprised multiple in the above various material, above-mentioned content was the total amount of various fatty alcohols.
Simultaneously, also contain water in the above-mentioned coolant, under the preferable case, in volume parts, the content of water is 97-99.7%.
In the coolant disclosed by the invention, alkoxyl tertiary amine, aliphatic acid and fatty alcohol with specific quantity carbon number 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 molecule, its organic segment stretches to the direction away from little water droplet, when the organic segment of this part touches heat, can be rapidly with heat absorption and pass to little water droplet, make little water droplet can reach the state of vaporization, thereby the heat on organic segment taken away.And outer wrap has the little water droplet of organic molecule to be scattered in the water, and when little water droplet reached the state of vaporization, heat was absorbed by the water of other parts again, make the little water droplet that is 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 has absorbed a large amount of energy and has caused fast heat radiation, thereby can carry out fast radiating and cooling to device body.
Further, also comprise lower alcohol in the described coolant, described lower alcohol is selected from one or more in ethanol, propyl alcohol or the butanols; In the volume parts of coolant, the content of lower alcohol is less than 0.5% in the described coolant.The Uniform Dispersion that is conducive on the one hand each component in the coolant by adding lower alcohol to improving the heat conduction, improves radiating effect highly beneficial simultaneously.
For the coolant that adopts among the present invention, under the preferable case, its proportion is 0.98-1g/cm
3, pH is 6.9-7.1.When coolant satisfies above-mentioned condition, to improve coolant on adsorptive support adhere to and to enlarge its scope of application favourable.
According to the present invention, when the content of the coolant on the adsorptive support changes, all can guarantee its radiating effect in a big way.Under the preferable case, the content of coolant is 1.5-5g/cm on the described adsorptive support
3Can make its radiating effect better when the content of the coolant in the adsorptive support is in above-mentioned scope, coolant is more stable on can adsorptive support simultaneously.
Adsorptive support disclosed by the invention can be various materials with adsorptivity of the prior art, under the preferable case, described adsorptive support is adsorbent fibers cloth, for example can be blotting paper or absorbent wool, above-mentioned blotting paper or absorbent wool are the adsorptivity string, can guarantee well that coolant dispersion therein adheres to.Above-mentioned adsorptive support can be commercially available.Understandable, in order to reach purpose of the present invention, those skilled in the art can adopt and the similar other materials of above-mentioned adsorbent fibers cloth.
For adsorptive support, its thickness can change in a big way, and under the preferable case, the thickness of described adsorptive support is 0.4-2mm.
Further under the preferable case, the surface density of described adsorptive support is 77-87g/m
2The inventor finds, when the content of surface density coolant in above-mentioned scope and on the adsorptive support of the adsorptive support that adopts is 1.5-5g/cm
3The time, absorption coolant that can be more stable guarantees radiating effect, simultaneously, can effectively prevent the vaporization in the coolant radiating and cooling process, the useful life of greatly having improved heat sink.
For frame disclosed by the invention, it act as with waterproof sealing layer and forms airtight heat radiation chamber.For achieving the above object, those skilled in the art can select various material of the prior art as required, adhere in device body more easily in order to make frame, and under the preferable case, described frame is remodeling acrylic acid.Understandable, above-mentioned frame is used to form the heat radiation chamber, and the thickness that its thickness is not less than heat sink gets final product, and under the preferable case, the thickness of described frame is 0.02-5mm.And for the width of described frame, then not restriction, those skilled in the art can regulate according to the size of the device body of required heat radiation and the size of heat sink.
According to the present invention, above-mentioned waterproof sealing layer is used to form described airtight heat radiation chamber, and this waterproof sealing layer can prevent that water vapour from passing.Above-mentioned waterproof sealing layer can adopt the film that has water resistance in the prior art, and for example described waterproof sealing layer can be polyethylene or polypropylene.Its thickness also is not particularly limited, and under the preferable case, described waterproof sealing layer thickness is 0.01-2mm.Above-mentioned waterproof sealing layer can be commercially available.
The present invention can be sealed in the heat radiation chamber heat sink by at frame waterproof sealing layer being set.Heat sink can absorb the heat that device body produces fast, reduces its temperature.As known in the art, the circulation of air can be accelerated exchange and the propagation of heat in the air, thereby is beneficial to heat radiation, and circulation of air must be faster, dispels the heat faster.Yet in the present invention, the inventor finds, this waterproof sealing layer is set after, heat sink is hedged off from the outer world out, greatly reduce the convection current of air and the exchange of heat, still, heat sink is not to the radiating effect of device body and changing of radiating efficiency.Simultaneously, form airtight heat radiation chamber by waterproof sealing layer is set, can greatly reduce the loss of the coolant on the adsorptive support, for increase from radiating element to recycle number of times highly beneficial.
According to the present invention, under the preferable case, the volume in the heat radiation chamber that described waterproof sealing layer and frame, device body consist of is greater than the volume of heat sink, and namely heat sink is not filled full heat radiation chamber.Be specifically as follows: exist between heat sink and the frame between gap or waterproof sealing layer and the heat sink and have the gap, more preferably have the gap between waterproof sealing layer and the heat sink.The inventor finds, when the volume in heat radiation chamber during greater than the volume of heat sink, on the one hand, airtight heat radiation chamber can prevent the loss of coolant, simultaneously, unnecessary space can hold the steam that the moisture vaporization produces in the coolant endothermic process in the heat radiation chamber, water becomes gaseous state from liquid state need absorb a large amount of heat, very favourable to improving radiating effect, and the steam after the vaporization still is stored in the closed heat radiation chamber, being adsorbed property carrier again after steam liquefies again, and then reuse is avoided the loss of the coolant that the moisture vaporization causes.
As to further improvement of the present invention, disclosed by the invention from radiating element adsorptive support and device body between have the heat conduction glue-line.By this heat conduction glue-line heat sink and device body firmly are connected, simultaneously, the adding of this heat conduction glue-line can't cause the decline of heat dispersion.
In order better to guarantee radiating effect, under the preferable case, described heat-conducting glue is glass fibre, and its conductive coefficient is 1.2-1.4W/m-k.Above-mentioned heat conduction glue-line only needs heat sink device body bonding is got final product, and to the not too large requirement of its thickness, under the preferable case, the thickness of described heat conduction glue-line is 0.05-0.4mm.Above-mentioned heat-conducting glue can be commercially available.
Arranging of above-mentioned heat conduction glue-line can have various ways, and for example the described heat conduction glue-line of can saying is arranged at the device body surface, and described frame, heat sink all are arranged on the heat conduction glue-line; Perhaps, also the heat conduction glue-line can be arranged at the device body surface, described frame is arranged at heat conduction glue-line edge, and heat sink is arranged in the frame, and is positioned on the heat conduction glue-line.Those skilled in the art can select the set-up mode of heat conduction glue-line as required voluntarily, and the difference of its set-up mode can not produce materially affect to function and the effect from radiating element.
Understandable, when radiating element comprised the heat conduction glue-line, described heat radiation chamber was formed by heat conduction glue-line, frame and the waterproof sealing layer on the device body when disclosed by the invention.
Disclosed by the invention very wide from the radiating element coverage, wherein device body can be the various devices that need heat radiation, and such as battery, wiring board, LED etc. all can.
Simultaneously, the invention also discloses above-mentioned preparation method from radiating element, be included in the device body surface and make frame; Coolant is attached on the adsorptive support, obtains heat sink; Then heat sink is arranged in the frame on the device body; Cover waterproof sealing layer at frame again, form the heat radiation chamber that inner sealing has heat sink.
The above-mentioned method for preparing frame does not have special, can directly adopt the mode of pasting will be attached to for the preparation of the material of frame the device body surface.For example, can adopt two-sided thin adhesive tape (tesa4972, modified acroleic acid adhesive) to stick in the device body surface.
Then, according to the area of adsorptive support, obtain certain coolant, then coolant is attached on the adsorptive support by the method for dripping or soak, form heat sink.Wherein, the consumption of the adsorptive support of selecting and coolant and various materials does not repeat them here as previously mentioned.
Then heat sink is arranged in the frame on the device body, adopts again waterproof sealing layer that heat sink is sealed in the heat radiation chamber.Said method has nothing special equally, and for example, frame adopts above-mentioned modified acroleic acid adhesive, directly waterproof sealing layer is sticked on the described frame to get final product.
Further, in order to improve the stability from radiating element, also can the heat conduction glue-line be set between heat sink and device body, be specifically as follows: form the heat conduction glue-line in device body, then frame is arranged on the heat conduction glue-line; Perhaps frame is arranged at heat conduction glue-line edge, then heat sink is arranged on the heat conduction glue-line in the frame.
Be appreciated that frame, heat sink all are arranged on the heat conduction glue-line when frame being arranged on the heat conduction glue-line.When frame being arranged at heat conduction glue-line edge, in the time of on the heat conduction glue-line in the frame that then heat sink is arranged, only heat sink is positioned on the heat conduction glue-line.
The method that forms the heat conduction glue-line in device body is known, as heat-conducting glue can being coated on the device body, or adopts the heat conduction adhesive plaster, and the heat conduction adhesive plaster is sticked on the device body.
Understandable, those skilled in the art can also adopt preparation method similar to the above, for example: make frame on the device body surface; Then adsorptive support is arranged in the frame on the device body, coolant is attached on the adsorptive support; Cover waterproof sealing layer at frame again, form the heat radiation chamber that inner sealing has heat sink.
The described method that adsorptive support is arranged on the device body is identical with preceding method with the method that coolant is attached on the adsorptive support.
Equally, can also the heat conduction glue-line be set between adsorptive support and device body, concrete grammar as previously mentioned.Before making described frame, form the heat conduction glue-line in device body first, then frame is arranged on the heat conduction glue-line; Perhaps frame is arranged at heat conduction glue-line edge, on the heat conduction glue-line in the frame that then adsorptive support is arranged.
Can prepare disclosed by the inventionly from radiating element by above method, its concrete structure as depicted in figs. 1 and 2.Wherein, as the surface attachment of device body 1 heat conduction glue-line 3 is arranged, heat conduction glue-line 3 surface adhesion have heat sink 2.Simultaneously, have frame 4 on the heat conduction glue-line 3, have waterproof sealing layer 5 on the frame 4.Heat conduction glue-line 3 on the device body 1, frame 4, waterproof sealing layer 5 have formed an airtight heat radiation chamber jointly, and heat sink 3 is positioned at this heat radiation chamber.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 includes only device body 1 and is positioned at its surperficial heat sink 2 from radiating element.
From radiating element, under the preferable case, heat sink 2 areas are less than the surface area of device body 1 for above-mentioned.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 less than the surface area of device body 1.More preferably the area of heat conduction glue-line 3 and heat sink 2 equates.
Below with lithium rechargeable battery as device body, by embodiment the present invention is further detailed.
Embodiment 1
The present embodiment is used for illustrating 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 the 4.2V constant voltage charge, normal charge finished when electric current was reduced to 34mA.Shelve 10min.
Be 0.9g/cm with 12g proportion
3, pH is that (surface density is 77g/m to 7.2 coolant (the ethyoxyl content of 0.4 parts by volume be the n-octyl alcohol of the pelargonic acid of the ethyoxyl tallow amine of 2mol/mol, 0.01 parts by volume, 0.29 parts by volume and the water of 99.3 parts by volume) to drip to the adsorbent fibers cloth that is of a size of 40 * 30 * 2mm
2) on, obtain heat sink A1.
Adhere to the thick frame (tesa4972, modified acroleic acid) of 5mm at battery surface.
Above-mentioned heat sink A3 is arranged in the frame.
Then paste the waterproof sealing layer that thickness is 2mm (PP film) at frame, obtain from radiating element S1.
Embodiment 2
The present embodiment is used for illustrating 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 the 4.2V constant voltage charge, normal charge finished when electric current was reduced to 34mA.Shelve 10min.
Be 0.99g/cm with 8g proportion
3, pH is that (surface density is 87g/m to 6.5 coolant (the ethyoxyl content of 0.04 parts by volume be the isodecanol of the isooctyl acid of the ethyoxyl tallow amine of 10mol/mol, 0.66 parts by volume, 0.05 parts by volume and the water of 99.25 parts by volume) to drip to the adsorbent fibers cloth that is of a size of 75 * 70 * 1mm
2) on, obtain heat sink A2.
Adhere to the thick frame (tesa4972, modified acroleic acid) of 1mm at battery surface.
Above-mentioned heat sink A2 is arranged in the frame.
Then paste the waterproof sealing layer that thickness is 0.5mm (PP film) at frame, obtain from radiating element S2.
Embodiment 3
The present embodiment is used for illustrating 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 the 4.2V constant voltage charge, normal charge finished when electric current was reduced to 34mA.Shelve 10min.
Be 1g/cm with 1.8g proportion
3, pH is that (surface density is 80g/m to drip to the adsorbent fibers cloth that is of a size of 40 * 30 * 0.5mm for 7 coolant (the ethyoxyl content of 1 parts by volume is the n-octyl alcohol of the pelargonic acid of the ethyoxyl coconut amine of 4mol/mol, 0.6 parts by volume, 0.2 parts by volume, the isobutanol of 0.2 parts by volume and the water of 98 parts by volume)
2) on, obtain heat sink A3.
Adhere to the thick frame (tesa4972, modified acroleic acid) of 0.5mm at battery surface.
Above-mentioned heat sink A3 is arranged in the frame.
Then paste the waterproof sealing layer that thickness is 0.05mm (PE film) at frame, obtain from radiating element S3.
Embodiment 4
The present embodiment is used for illustrating 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 the 4.2V constant voltage charge, normal charge finished when electric current was reduced to 34mA.Shelve 10min.
Adhering to thickness at battery surface is the heat conduction glue-line (conductive coefficient is the glass fibre of 1.3W/m-k) of 0.2mm.
At the thick frame (tesa4972, modified acroleic acid) of heat conduction glue-line surface adhesion 1mm.
Then (surface density is 80g/m will to be of a size of the adsorbent fibers cloth of 40 * 30 * 0.5mm
2) adhere on the heat conduction glue-line in the frame.
Be 1g/cm with 3g proportion again
3, pH is that 7 coolant (the ethyoxyl content of 2 parts by volume is the n-octyl alcohol of the pelargonic acid of the ethyoxyl coconut amine of 6mol/mol, 0.6 parts by volume, 0.2 parts by volume, the isopropyl alcohol of 0.2 parts by volume and the water of 97 parts by volume) drips on the adsorbent fibers cloth.
Then paste the waterproof sealing layer that thickness is 0.05mm (PE film) at frame, make heat sink fill the chamber of completely dispelling the heat, obtain from radiating element S4.
Embodiment 5
The present embodiment is used for illustrating disclosed by the invention from radiating element and preparation method thereof.
Method according to embodiment 4 prepares from radiating element, and different is that the height of frame is higher than the height of heat sink, after frame is pasted waterproof sealing layer, has the gap between waterproof sealing layer and the heat sink.
Obtain from radiating element S5.
Comparative Examples 1
It is disclosed by the invention from radiating element that this Comparative Examples is used for comparative illustration.
Battery is reached 4.2V with 850mA constant current charge to voltage, and then with the 4.2V constant voltage charge, normal charge finished when electric current was reduced to 34mA.Shelve 10min.As device D1.
Comparative Examples 2
It is disclosed by the invention from radiating element that this Comparative Examples is used for comparative illustration.
Battery is reached 4.2V with 850mA constant current charge to voltage, and then with the 4.2V constant voltage charge, normal charge finished when electric current was reduced to 34mA.Shelve 10min.
Adhere to the heat conduction glue-line (conductive coefficient is the glass fibre of 1.3W/m-k) be of a size of 40 * 30 * 0.2mm at battery surface, (surface density is 80g/m then will to be of a size of the adsorbent fibers cloth of 40 * 30 * 0.5mm
2) adhere on the heat conduction glue-line.
Be 1g/cm with 3g proportion again
3PH is that 7 coolant (the ethyoxyl content of 2 parts by volume is the n-octyl alcohol of the pelargonic acid of the ethyoxyl tallow amine of 6mol/mol, 0.6 parts by volume, 0.2 parts by volume, the isopropyl alcohol of 0.2 parts by volume and the water of 97 parts by volume) drips on the adsorbent fibers cloth, obtains from radiating element D2.
The heat dispersion test
To above-mentioned prepare overcharge test from radiating element S1-S5 and D1, D2, method of testing is as follows:
Be that 15-35 ℃, relative humidity are that 45-85%, atmospheric pressure are under the environmental condition of 86-106kPa in temperature, overcharge security test to above-mentioned from radiating element.Method of testing is as follows:
The output current in constant current constant voltage source is transferred to the current value 3.4A, the output voltage that overcharge test transfer to 5V.
With the high temperature adhesive plaster with the thermocouple probe of thermometer be fixed on device body (battery) do not adhere to heat sink one side in the middle of the place, will from radiating element surface uniform parcel one deck loose thick approximately 12 millimeters asbestos and asbestos are compacted to the 6-7 millimeters thick during at parcel, then close the power supply in constant current constant voltage source, connect tested device body (battery), universal instrument and constant current constant voltage source with wire, put to safety cabinet.
Open the power supply in constant current constant voltage source, simultaneously timing is overcharged to battery; The temperature and time of registering device body (battery) (every 10-30S record a temperature) observes simultaneously whether battery breach, leakage occur, is smoldered, blast, phenomenon on fire.
When charging current is down near 34mA, or be down to than low 10 ℃ of peak value when temperature, or the phenomenon such as on fire of blasting is when finishing, test finishes, with being as the criterion of occuring at first in above-mentioned three kinds of situations.
Simultaneously, according to the preparation of the method for embodiment 4 and Comparative Examples 2 from radiating element, then to these two kinds from radiating element cycle charge-discharge as follows:
Under 23 ℃ of conditions, with above-mentioned from radiating element respectively with 1C current charges to 4.2 volt, with constant-potential charge, cut-off current is 0.05C after voltage rises to 4.2 volts, shelves 10 minutes; Then with 1C current discharge to 3.0 volt, shelved 5 minutes.Repeat above step 500 time, obtain respectively S6 and D3, then S5 and D3 are carried out heat dispersion test and record temperature by preceding method again.
The test result that obtains is inserted table 1.
Table 1
| Sample | Temperature peak time/min | Peak temperature/℃ | Stop temperature/℃ | Whether explode |
| S1 | 37.9 | 33.2 | 28.3 | No |
| S2 | 36.5 | 31.3 | 27.1 | No |
| S3 | 33.6 | 26.3 | 24.5 | No |
| S4 | 32.5 | 22.8 | 19.8 | No |
| S5 | 30.7 | 21.1 | 18.5 | No |
| S6 | 35.4 | 24.7 | 24.1 | No |
| D1 | 69.5 | 118.9 | / | Be |
| D2 | 70.5 | 25.1 | 20.4 | No |
| D3 | 63.2 | 38.8 | 36.6 | No |
Can find out from the test result of table 1, D1 overcharges under the condition above-mentioned, can be persistently overheating, and when temperature arrives 118.9 ℃, blast.And can find out such as the test result of S1-S6, disclosed by the invention in radiating element, overcharging under the condition as the battery of device body, significant change does not occur in battery temperature.
Contrast the test result of S4 and D2 as can be known, heat sink is sealed in the heat radiation chamber, isolated heat radiation chamber does not cause descending from the radiating effect of radiating element with the circulation of air in the external world.
The test result of contrast S4 and S5 as can be known, when the volume in heat radiation chamber during greater than the volume of heat sink, radiating effect has obtained further raising.
Simultaneously, the test result of contrast S6 and D3 can be found out, after repeatedly recycling, still very excellent from heat dispersion from radiating element disclosed by the invention, and the heat sink sealing through its heat dispersion after the recycling of certain number of times certain decline do not appearred from radiating element (D3).
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. one kind from radiating element, it is characterized in that, comprise device body, be positioned at the frame on device body surface and be positioned at waterproof sealing layer on the frame, the airtight heat radiation chamber of the common formation of described waterproof sealing layer and frame and device body, described heat radiation is provided with heat sink in the chamber, and described heat sink comprises and is positioned at the adsorptive support on the device body and is adsorbed in coolant on the described adsorptive support; Described coolant comprises that carbon number is the alkoxyl tertiary amine of 12-18, the aliphatic acid that carbon number is 6-12, the fatty alcohol and water that carbon number is 7-12.
2. according to claim 1 from radiating element, it is characterized in that, described alkoxyl tertiary amine is selected from one or more in ethyoxyl tallow amine, ethyoxyl coconut amine, ethyoxyl ether amine, the ethoxy propylene diamines, described aliphatic acid is n-nonanoic acid and/or sad, and described fatty alcohol is octanol and/or decyl alcohol.
3. according to claim 2 from radiating element, it is characterized in that, in the 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%, the content of fatty alcohol is 0.05-0.29%, and the content of water is 97-99.7%.
4. according to claim 1 from radiating element, it is characterized in that, also comprise lower alcohol in the described coolant, described lower alcohol is selected from one or more in ethanol, propyl alcohol or the butanols; In volume parts, the content of lower alcohol is less than 0.5% in the described coolant.
5. any one is described from radiating element according to claim 1-4, it is characterized in that, the content of coolant is 1.5-5g/cm on the described adsorptive support
3
6. according to claim 1, any one is described from radiating element in 2,3,4,6, it is characterized in that, described adsorptive support is adsorbent fibers cloth, its surface density is 77-87g/m
2, thickness is 0.4-2mm.
7. according to claim 1 from radiating element, it is characterized in that, described frame is modified acroleic acid.
8. according to claim 7 from radiating element, it is characterized in that, the thickness of described frame is 0.02-5mm.
9. according to claim 1 from radiating element, it is characterized in that, the volume in described heat radiation chamber is greater than the volume of heat sink.
10. according to claim 1 from radiating element, it is characterized in that, there is the gap between described waterproof sealing layer and the heat sink.
11. according to claim 1, any one is described from radiating element in 2,3,4,7,8,9,10, it is characterized in that, described waterproof sealing layer is polyethylene or polypropylene.
12. according to claim 11 from radiating element, it is characterized in that, described waterproof sealing layer thickness is 0.01-2mm.
13. according to claim 1 from radiating element, it is characterized in that having the heat conduction glue-line between described adsorptive support and the device body.
14. according to claim 1 from radiating element, it is characterized in that, described device body surface is provided with the heat conduction glue-line, and described frame and heat sink are arranged on the heat conduction glue-line.
15. according to claim 13 or 14 described 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; The thickness of described heat conduction glue-line is 0.05-0.4mm.
16. according to claim 1 from radiating element, it is characterized in that, described device body is a kind of among battery, wiring board, the LED.
17. such as the described preparation method from radiating element of any one among the claim 1-16, comprising: make frame on the device body surface; Coolant is attached on the adsorptive support, obtains heat sink; Then heat sink is arranged in the frame on the device body; Cover waterproof sealing layer at frame again, form the heat radiation chamber that inner sealing has heat sink;
Perhaps make frame on the device body surface; Then adsorptive support is arranged in the frame on the device body, coolant is attached on the adsorptive support; Cover waterproof sealing layer at frame again, form the heat radiation chamber that inner sealing has heat sink;
Described coolant comprises that carbon number is the alkoxyl tertiary amine of 12-18, the aliphatic acid that carbon number is 6-12, the fatty alcohol and water that carbon number is 7-12.
18. preparation method according to claim 17 is characterized in that, before making described frame, forms the heat conduction glue-line in device body first, then frame is arranged on the heat conduction glue-line; Perhaps frame is arranged at heat conduction glue-line edge, on the heat conduction glue-line in the frame that then heat sink is arranged; Cover waterproof sealing layer at frame again, form the heat radiation chamber that inner sealing has heat sink;
Perhaps before making described frame, form the heat conduction glue-line in device body first, then frame is arranged on the heat conduction glue-line; Perhaps frame is arranged at heat conduction glue-line edge, then adsorptive support is arranged on the heat conduction glue-line in the frame, coolant is attached on the adsorptive support; Cover waterproof sealing layer at frame again, form the heat radiation chamber that inner sealing has heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210086656.0A CN103369912B (en) | 2012-03-29 | 2012-03-29 | A kind of from radiating element and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210086656.0A CN103369912B (en) | 2012-03-29 | 2012-03-29 | A kind of from radiating element and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103369912A true CN103369912A (en) | 2013-10-23 |
| CN103369912B CN103369912B (en) | 2016-03-09 |
Family
ID=49370111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210086656.0A Active CN103369912B (en) | 2012-03-29 | 2012-03-29 | A kind of from radiating element and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103369912B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2774090Y (en) * | 2005-01-06 | 2006-04-19 | 有量科技股份有限公司 | Radiator |
| CN2783543Y (en) * | 2005-02-05 | 2006-05-24 | 奥古斯丁科技股份有限公司 | Radiation structure for cell module |
| WO2011085760A1 (en) * | 2009-12-22 | 2011-07-21 | Volkswagen Aktiengesellschaft | Method for controlling the temperature of an electrical power source of a vehicle |
| EP2388851A1 (en) * | 2010-05-18 | 2011-11-23 | Behr GmbH & Co. KG | Cooling device and method for producing same |
-
2012
- 2012-03-29 CN CN201210086656.0A patent/CN103369912B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2774090Y (en) * | 2005-01-06 | 2006-04-19 | 有量科技股份有限公司 | Radiator |
| CN2783543Y (en) * | 2005-02-05 | 2006-05-24 | 奥古斯丁科技股份有限公司 | Radiation structure for cell module |
| WO2011085760A1 (en) * | 2009-12-22 | 2011-07-21 | Volkswagen Aktiengesellschaft | Method for controlling the temperature of an electrical power source of a vehicle |
| EP2388851A1 (en) * | 2010-05-18 | 2011-11-23 | Behr GmbH & Co. KG | Cooling device and method for producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103369912B (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ye et al. | Experimental study on heat dissipation for lithium-ion battery based on micro heat pipe array (MHPA) | |
| CN205543155U (en) | Battery package cooling system | |
| CN102655247A (en) | Method and device for constant temperature operation of lithium battery | |
| CN107293824A (en) | A kind of electrokinetic cell liquid cooling apparatus | |
| CN204271214U (en) | There is the dynamic lithium battery group of intelligent temperature regulatory function | |
| CN106102424A (en) | Heat pipe type heat radiation module and use this heat pipe type heat radiation module charging pile module | |
| CN208835235U (en) | A kind of battery modules and battery modules phase-change accumulation energy partition | |
| CN202616368U (en) | Self-radiating device | |
| CN108365034A (en) | Heat dissipating layer containing phase-change material and preparation method thereof and solar photovoltaic assembly comprising the heat dissipating layer | |
| CN206210849U (en) | A kind of battery container | |
| CN103367835A (en) | Power battery thermal management system based on loop heat pipes | |
| CN103367829B (en) | Self-cooling device and preparation method thereof | |
| CN106299546B (en) | A kind of graphene battery heat management device | |
| CN205810898U (en) | Cylindrical battery group is used for placing the cooling stand of cylindrical battery | |
| CN103369912B (en) | A kind of from radiating element and preparation method thereof | |
| CN206116560U (en) | Electric automobile power battery heats module | |
| CN103367828B (en) | A kind of from radiating element and preparation method thereof | |
| CN103311596B (en) | A kind of from radiating element and preparation method thereof | |
| CN202601806U (en) | Self-heat dissipation device | |
| CN207690857U (en) | A kind of battery cell case with damping and heat sinking function | |
| CN207426083U (en) | PTC cell heaters | |
| CN202616366U (en) | Self-heat-dissipating component | |
| CN210200798U (en) | Liquid cooling structure of power battery pack | |
| CN202617572U (en) | Self-radiating device | |
| CN202601807U (en) | Self-radiating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |