CN106785190B - Conductive structure and preparation method thereof for power battery heat dissipation - Google Patents
Conductive structure and preparation method thereof for power battery heat dissipation Download PDFInfo
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- CN106785190B CN106785190B CN201611067434.9A CN201611067434A CN106785190B CN 106785190 B CN106785190 B CN 106785190B CN 201611067434 A CN201611067434 A CN 201611067434A CN 106785190 B CN106785190 B CN 106785190B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
-
- 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
Abstract
The present invention relates to heat dissipation conductive structure technical fields, disclose a kind of conductive structure and preparation method thereof for power battery heat dissipation.The present invention includes heat-conducting layer, confining bed and insulating layer, the heat-conducting layer includes that surface is evenly distributed with the carrier graphite film of through-hole and is attached to the paraffin layer of carrier graphite film surface, a confining bed is respectively set in heat-conducting layer two sides, and confining bed is graphite film, and insulating layer is respectively set on the outside of two confining beds.The configuration of the present invention is simple, at low cost, heating conduction be good, good heat dissipation effect, is not easy to reveal, using safe and convenient.
Description
Technical field
The present invention relates to heat dissipation conductive structure technical fields, more particularly to a kind of thermally conductive knot for power battery heat dissipation
Structure and preparation method thereof.
Background technique
As current energy crisis and environmental problem become increasingly conspicuous, new-energy automobile is quickly grown.However, new energy in recent years
Source automotive safety problem occurs frequently, indispensable power unit of the power battery as new-energy automobile, the heat dissipation effect of power battery pack
Rate and the safety of new-energy automobile are closely bound up.
For at present, power battery cooling measure mainly includes cooling air, liquid cooling and Phase cooling etc..Due to sky
The specific heat capacity and thermal coefficient of air cooling are smaller, and the power of blower requires to contradict with the energy content of battery, causes air to electricity
The cooling effect of pond group is limited；As a heat transfer medium using liquid, the requirement to leakproofness is high, and quality is relatively large, needs water
The components such as set, heat exchanger, structure is relative complex, while also needing to consider the problems such as freezing of liquid under extremely low temperature；Phase-change material
With high heat storage capacity, but itself can not carry out hot transmitting, and when application need to be used in conjunction with other cooling systems.
Phase-change material, which refers to, to be varied with temperature and changes state of matter and can provide the substance of latent heat, and phase transition process is phase
The process for becoming material transformation physical property, in phase transition process, phase-change material absorbs or discharges a large amount of latent heat.Phase-change material master
It to include inorganic, organic and composite phase-change material three classes, paraffin is as one kind most widely used in organic phase change material, tool
Have the advantages that performance it is stable, without mutually separation and surfusion, cheap, but its heating conduction is poor, generally all needs by multiple
Other highly heat-conductive materials are closed to improve the heating conduction of phase-change material.
Chinese patent " a kind of novel phase-change material composition " (CN201310714156.1) discloses a kind of novel compositions
Object, object increases material thermal conductivity by addition graphene, and composition also added carbon nanotube, due to graphene, carbon nanometer
The price of pipe is higher, is unfavorable for the large-scale application of the phase change material composition.
Summary of the invention
The present invention provides that a kind of structure is simple, at low cost, heating conduction is good, good heat dissipation effect, is not easy to reveal, using peace
The complete easily conductive structure and preparation method thereof for power battery heat dissipation.
The technical issues of solution, is:
In order to solve the above technical problems, the present invention adopts the following technical scheme:
The present invention is used for the conductive structure of power battery heat dissipation, including heat-conducting layer, confining bed and insulating layer, the heat-conducting layer
The carrier graphite film of through-hole is evenly distributed with including surface and is attached to the paraffin layer of carrier graphite film surface, heat-conducting layer two sides point
One confining bed is not set, and confining bed is graphite film, and insulating layer is respectively set on the outside of two confining beds.
The present invention is used for the conductive structure of power battery heat dissipation, and further, the diameter of the through-hole is 0.5-1mm, leads to
Hole is distributed in the matrix form.
The present invention be used for power battery heat dissipation conductive structure, further, the carrier graphite film with a thickness of 18-25
μm, plane thermal conductivity is 1500-1700W/ (mK)；The graphite film of confining bed with a thickness of 25-30 μm, plane thermal conductivity
For 1300-1500W/ (mK).
The present invention is used for the conductive structure of power battery heat dissipation, further, the paraffin layer thickness of the through-hole inner surface
Paraffin layer thickness for 0.05-0.1mm, carrier graphite film upper and lower surfaces is no more than 0.1mm.
The present invention is used for the conductive structure of power battery heat dissipation, and further, the insulating layer uses R-4 insulation board, gathers
Acid imide film, PET film or PP insulating trip are made.
Preparation method of the present invention for the conductive structure of power battery heat dissipation, comprising the following steps:
Step 1: preparation: opening up through-hole in carrier graphite film surface, and heating paraffin is melted；
Step 2: impregnating paraffin: by the heating paraffin of melting to 80-100 DEG C, the carrier of then processing step 1
Graphite film is dipped into paraffin so that the paraffin layer of carrier graphite film surface with a thickness of 0.05-0.1mm；
Step 3: coated with paraffin: the carrier graphite film surface made from step 2 coats melt paraffin, carrier stone after coating
The paraffin layer thickness on ink film surface is no more than 0.1mm；
Step 4: fitting confining bed: posting graphite film in paraffin layer surface, be aligned, compress；
Step 5: packaging insulating layer: being packaged using dielectric panel to composite layer made from step 4.
Preparation method of the present invention for the conductive structure of power battery heat dissipation, further, carrier graphite in step 2
The time that film impregnates in paraffin is no more than 30min.
Preparation method of the present invention for the conductive structure of power battery heat dissipation further utilizes scraper in step 3
Coated with paraffin, the temperature of coated paraffin are 70-80 DEG C.
Preparation method of the present invention for the conductive structure of power battery heat dissipation, further, confining bed in step 4
Fitting selects following manner to carry out:
Mode one, step 3 post confining bed stone in paraffin layer surface immediately after carrier graphite film surface coated with paraffin layer
Ink film, it is cooling after compression；
Mode two, step 3 are cooling after carrier graphite film surface coated with paraffin layer, then uniformly apply in paraffin layer surface
Heat-conducting glue is covered, covers confining bed graphite film, cooling after compression on heat-conducting glue surface.
The present invention is used for the conductive structure of power battery heat dissipation compared with prior art, has the following beneficial effects:
The present invention is used for the conductive structure of power battery heat dissipation using graphite film as the carrier of phase-change material paraffin, combines
The excellent thermal storage performance of paraffin and the good heating conduction of graphite film, a heat transfer path is formd in power battery, will be moved
The heat that power battery gives out effectively is absorbed into paraffin and is timely conducted heat by graphite film, improves stone
The thermal capacitance of ink film, so that simple adduction of the heat dissipation performance of conductive structure much larger than the two material.
The present invention has opened up multiple through-holes in carrier graphite film surface, and through-hole inner surface is again covered with paraffin by impregnating
Layer forms a complete continuous thermally conductive system, not only increases paraffin in the adsorbance of carrier graphite film surface, improve
The thermal capacitance of graphite film substantially increases the radiating efficiency of conductive structure.
The present invention is covered with confining bed graphite film on the surface of paraffin layer, on the one hand to the stone of carrier graphite film surface coating
Wax layer play the role of one it is closed, effectively prevent because paraffin melts the feelings that leak caused by when power battery surface overheats
Condition uses safe and convenient；Another aspect confining bed graphite film itself plays the role of a heat transfer path, graphite film can quickly,
Efficiently the heat that power battery surface generates is conducted, substantially increases the heat transfer efficiency of conductive structure.
The present invention can select the insulating materials of unlike material according to the type of power battery, to realize conductive structure and power
The good contact of battery, entire conductive structure is film-form, frivolous, can be covered in different type, different shape, difference well
The surface of the power battery of use condition cooperates wind-cooling heat dissipating, it is ensured that it is thermally conductive to expand the present invention for the radiating efficiency of conductive structure
The scope of application of structure, uses safe and convenient.
The present invention using the technique coated twice, is first impregnated, will be provided in carrier graphite film surface coated with paraffin layer
The carrier graphite film of through-hole is immersed in melt paraffin, so that through-hole inner surface has also uniformly covered paraffin layer, is soaked by control
Time and soaking temperature are steeped, the thickness for the paraffin layer that control coats for the first time avoids the paraffin layer thickness in through-hole blocked up, blocks
Through-hole carries out the second subsurface coating after then cooling down again, in the upper and lower surfaces uniformly coating respectively of carrier graphite film
Tekite wax layer had both improved the paraffin adsorbance on carrier graphite film, in turn avoided the feelings that primary coating excessively blocks through-hole
Condition improves the heat transfer efficiency of conductive structure.
The present invention, can be in rigid coated with paraffin layer, immediately in the paraffin table of ot-yet-hardened when being bonded confining bed graphite film
Face paste covers graphite film, can also be covered graphite film in paraffin layer surface by thermally conductive heat-resistant adhesive, work of constructing after paraffin layer is cooling
Skill is flexible, strong operability, while service condition that can be different according to conductive structure, selects suitable construction technology, operation is more
It is convenient.
The conductive structure for power battery heat dissipation of the invention is described further with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention for the conductive structure of power battery heat dissipation；
Fig. 2 is the structural schematic diagram of carrier graphite film；
Fig. 3 present invention prepares the heating rate schematic diagram that product is made in embodiment 1；
The heating rate schematic diagram of Fig. 4 graphite membrane sample.
Appended drawing reference:
1- heat-conducting layer；11- carrier graphite film；12- paraffin layer；13- through-hole；2- confining bed；3- insulating layer.
Specific embodiment
As shown in Figure 1, conductive structure of the present invention for power battery heat dissipation includes heat-conducting layer, confining bed and insulating layer,
Heat-conducting layer includes that surface is evenly distributed with the carrier graphite film of through-hole and is attached to the paraffin layer of carrier graphite film surface, such as Fig. 2
Shown, through-hole diameter 0.5-1mm, through-hole is distributed in the matrix form, carrier graphite film with a thickness of 18-25 μm, plane thermal conductivity
Coefficient is 1500-1700W/ (mK), the paraffin layer of through-hole inner surface with a thickness of 0.05-0.1mm, carrier graphite film upper surface and
The paraffin layer thickness of lower surface is no more than 0.1mm, and a confining bed is respectively set in heat-conducting layer two sides, and confining bed is graphite film, closing
The graphite film of layer with a thickness of 25-30 μm, plane thermal conductivity is 1300-1500W/ (mK)；It is set respectively on the outside of two confining beds
Insulating layer is set, insulating layer is made of R-4 insulation board, polyimide film, PET film or PP insulating trip.
Prepare embodiment 1
The conductive structure for power battery heat dissipation is prepared in accordance with the following methods:
With a thickness of 18 μm, plane thermal conductivity is that the carrier graphite film surface of 1500W/ (mK) uniformly opens up through-hole,
The diameter for opening up through-hole is 1.0mm, is then immersed in the atoleine melted at 80 DEG C, after 10min, takes out carrier stone
Ink film is cooled to room temperature, the atoleine then melted in the case where its surface uniformly coats 70 DEG C again, after coating, carrier graphite
The paraffin layer thickness of film surface is no more than 0.1mm；Confining bed graphite film, envelope are bonded in paraffin layer surface immediately after coated with paraffin layer
Close layer graphite film with a thickness of 25 μm, plane thermal conductivity is 1300W/ (mK), is cooled to after compression；It then will be after fitting
Lamination layer structure is encapsulated with R-4 insulation board.
Prepare embodiment 2
The conductive structure for power battery heat dissipation is prepared in accordance with the following methods:
With a thickness of 25 μm, plane thermal conductivity is that the carrier graphite film surface of 1700W/ (mK) uniformly opens up through-hole,
The diameter for opening up through-hole is 0.7mm, is then immersed in the atoleine melted at 100 DEG C, after 20min, takes out carrier
Graphite film is cooled to room temperature, the atoleine then melted in the case where its surface uniformly coats 75 DEG C again, after coating, carrier stone
The paraffin layer thickness on ink film surface is no more than 0.1mm；It is bonded confining bed graphite film in paraffin layer surface immediately after coated with paraffin layer,
Confining bed graphite film with a thickness of 25 μm, plane thermal conductivity is 1500W/ (mK), is cooled to after compression；Then after being bonded
Lamination layer structure encapsulated with polyimide film.
Prepare embodiment 3
The conductive structure for power battery heat dissipation is prepared in accordance with the following methods:
With a thickness of 23 μm, plane thermal conductivity is that the carrier graphite film surface of 1600W/ (mK) uniformly opens up through-hole,
The diameter for opening up through-hole is 0.5mm, is then immersed in the atoleine melted at 90 DEG C, after 30min, takes out carrier stone
Ink film is cooled to room temperature, the atoleine then melted in the case where its surface uniformly coats 80 DEG C again, after coating, carrier graphite
The paraffin layer thickness of film surface is no more than 0.1mm；It is cooled to room temperature after coated with paraffin layer, it is heat-resisting in paraffin layer surface coated with thermally conductive
Glue bonds confining bed graphite film in film surface, confining bed graphite film with a thickness of 30 μm, plane thermal conductivity 1400W/
(mK), it is cooled to after compression；Then the lamination layer structure after fitting is encapsulated with PET film, double-sided adhesive is used on the outside of PET film
It pastes, the power battery surface of cylindrical body can be used in.
Prepare embodiment 4
The conductive structure for power battery heat dissipation is prepared in accordance with the following methods:
With a thickness of 20 μm, plane thermal conductivity is that the carrier graphite film surface of 1500W/ (mK) uniformly opens up through-hole,
The diameter for opening up through-hole is 0.8mm, is then immersed in the atoleine melted at 85 DEG C, after 15min, takes out carrier stone
Ink film is cooled to room temperature, the atoleine then melted in the case where its surface uniformly coats 72 DEG C again, after coating, carrier graphite
The paraffin layer thickness of film surface is no more than 0.1mm；It is cooled to room temperature after coated with paraffin layer, it is heat-resisting in paraffin layer surface coated with thermally conductive
Glue bonds confining bed graphite film in film surface, confining bed graphite film with a thickness of 27 μm, plane thermal conductivity 1300W/
(mK), it is cooled to after compression；Then the PP insulating trip of the lamination layer structure after fitting is encapsulated.
Detect embodiment
Conductive structure made from above-mentioned preparation embodiment carries out the detection of heating conduction, specific testing result such as 1 institute of table
Show.
Table 1 prepares the heating conduction testing result of conductive structure made from embodiment
As shown in Table 1, the synthesis thermal coefficient for the conductive structure being prepared according to the method for the invention is 10-15W/
(mK), and paraffin as the phase-change material being most widely used, performance is stablized, and be easy to get economy, but heating conduction is poor, stone
The thermal coefficient of wax is generally 0.23W/ (mK), and conductive structure produced by the present invention opened up in carrier graphite film surface it is logical
Hole not only increases paraffin in the adsorbance of graphite film surface, and combine stone in carrier graphite film surface coated with paraffin layer
The heat accumulation of wax and the heat transfer property of graphite film, so that the synthesis heat dissipation performance of conductive structure of the present invention has obtained effectively mentioning
It is high.
Comparative example
The comparative experiments test of hot spot temperature is carried out under the conditions of equal-wattage 8.8V*0.55A, the equipment used is straight
Galvanic electricity source and infrared thermal imager.It is control with graphite film using product made from the above-mentioned preparation embodiment 1 of the present invention as experimental group
Group detects the temperature of its hot spot, and the results are shown in Table 2 for specific testing inspection.
The testing result of 2 hot spot temperature of table
| Testing time | Control group DEG C | Experimental group DEG C |
| 30s | 63.1 | 58.3 |
| 60s | 76.6 | 71.1 |
| 90s | 82.8 | 75.7 |
| 110s | 85 | 80.7 |
As shown in Table 2, under the different testing times, the temperature of the product surface hot spot of experimental group is lower than control group
5-7 DEG C, illustrate that the practical heat dissipation effect of conductive structure of the present invention is better than graphite film.Experimental group and the heating speed for compareing set product
Rate figure is as shown in Figure 3 and Figure 4.As can be seen from figs. 3 and 4
Within the scope of 50-70 DEG C, for laboratory sample compares simple graphite membrane sample, the temperature of material surface is promoted more
Be it is steady, radiate it is more stable, this temperature range be paraffin transition temperature range, within this range wax phase change absorb heat, inhale
The heat of receipts is quickly dissipated by graphite film, so that the temperature of material surface will not rise sharply or rapid drawdown, graphite film is in the structure
Other than playing the role of carrier, also played in terms of heat dissipation biggish.Material surface temperature is avoided to rise sharply or rapid drawdown
Caused security risk extends the service life of material, uses more safe ready.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (8)
1. the conductive structure for power battery heat dissipation, it is characterised in that: described to lead including heat-conducting layer, confining bed and insulating layer
Thermosphere includes that surface is evenly distributed with the carrier graphite film of through-hole and is attached to the paraffin layer of carrier graphite film surface, heat-conducting layer two
A confining bed is respectively set in side, and confining bed is graphite film, and insulating layer is respectively set on the outside of two confining beds；The paraffin of through-hole inner surface
Layer is no more than 0.1mm with a thickness of 0.05-0.1mm, the paraffin layer thickness of carrier graphite film upper and lower surfaces.
2. the conductive structure according to claim 1 for power battery heat dissipation, it is characterised in that: the diameter of the through-hole
For 0.5-1mm, through-hole is distributed in the matrix form.
3. the conductive structure according to claim 1 for power battery heat dissipation, it is characterised in that: the carrier graphite film
With a thickness of 18-25 μm, plane thermal conductivity is 1500-1700W/ (mK)；The graphite film of confining bed with a thickness of 25-30 μ
M, plane thermal conductivity are 1300-1500W/ (mK).
4. the conductive structure according to claim 1 for power battery heat dissipation, it is characterised in that: the insulating layer uses
R-4 insulation board, polyimide film, PET film or PP insulating trip are made.
5. the preparation method described in claim 1-4 any one for the conductive structure of power battery heat dissipation, feature exist
In: the following steps are included:
Step 1: preparation: opening up through-hole in carrier graphite film surface, and heating paraffin is melted；
Step 2: impregnating paraffin: by the heating paraffin of melting to 80-100 DEG C, the carrier graphite of then processing step 1
Film is dipped into paraffin so that the paraffin layer of carrier graphite film surface with a thickness of 0.05-0.1mm；
Step 3: coated with paraffin: the carrier graphite film surface made from step 2 coats melt paraffin, carrier graphite film after coating
The paraffin layer thickness on surface is no more than 0.1mm；
Step 4: fitting confining bed: posting graphite film in paraffin layer surface, be aligned, compress；
Step 5: packaging insulating layer: being packaged using dielectric panel to composite layer made from step 4.
6. the preparation method of the conductive structure according to claim 5 for power battery heat dissipation, it is characterised in that: step
The time that carrier graphite film impregnates in paraffin in two is no more than 30min.
7. the preparation method of the conductive structure according to claim 5 for power battery heat dissipation, it is characterised in that: step
Scraper coated with paraffin is utilized in three, the temperature of coated paraffin is 70-80 DEG C.
8. the preparation method of the conductive structure according to claim 5 for power battery heat dissipation, it is characterised in that: step
The fitting of confining bed selects following manner to carry out in four:
Mode one, step 3 post confining bed graphite in paraffin layer surface immediately after carrier graphite film surface coated with paraffin layer
Film, it is cooling after compression；
Mode two, step 3 are cooling after carrier graphite film surface coated with paraffin layer, then uniformly coat and lead in paraffin layer surface
Hot glue covers confining bed graphite film, cooling after compression on heat-conducting glue surface.
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| CN107331651B (en) * | 2017-07-20 | 2019-08-27 | 广东小天才科技有限公司 | Heat sink material and preparation method, the electronic equipment and heat dissipating method of electronic equipment |
| DE102018210646B4 (en) * | 2018-06-28 | 2024-02-29 | Sgl Carbon Se | Sealing segment for temperature control of a fluid-cooled battery |
| CN115441098B (en) * | 2022-10-10 | 2023-10-20 | 东莞市鸿亿导热材料有限公司 | Graphite heat conduction assembly and preparation method thereof |
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| CN102660230A (en) * | 2012-04-01 | 2012-09-12 | 郑德强 | Heat superconducting composite phase change energy storage material |
| CN202476021U (en) * | 2012-02-07 | 2012-10-03 | 山东大学 | Power electronic integration module tiny passage liquid cooling substrate with double trapezoid cross section fins |
| CN104833255A (en) * | 2015-05-26 | 2015-08-12 | 中国工程物理研究院应用电子学研究所 | Phase change cold accumulating device |
| CN105990619A (en) * | 2015-02-10 | 2016-10-05 | 广东万锦科技股份有限公司 | Power cell module with reinforced heat radiation function |
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| AU2001291664A1 (en) * | 2000-07-21 | 2002-02-05 | Rubitherm Gmbh | Latent heat storage material, sound absorber and biofilter |
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|---|---|---|---|---|
| CN202476021U (en) * | 2012-02-07 | 2012-10-03 | 山东大学 | Power electronic integration module tiny passage liquid cooling substrate with double trapezoid cross section fins |
| CN102660230A (en) * | 2012-04-01 | 2012-09-12 | 郑德强 | Heat superconducting composite phase change energy storage material |
| CN105990619A (en) * | 2015-02-10 | 2016-10-05 | 广东万锦科技股份有限公司 | Power cell module with reinforced heat radiation function |
| CN104833255A (en) * | 2015-05-26 | 2015-08-12 | 中国工程物理研究院应用电子学研究所 | Phase change cold accumulating device |
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