CN207426072U - A kind of electric automobile power battery cooling device - Google Patents
A kind of electric automobile power battery cooling device Download PDFInfo
- Publication number
- CN207426072U CN207426072U CN201721387751.9U CN201721387751U CN207426072U CN 207426072 U CN207426072 U CN 207426072U CN 201721387751 U CN201721387751 U CN 201721387751U CN 207426072 U CN207426072 U CN 207426072U
- Authority
- CN
- China
- Prior art keywords
- battery
- placing box
- electric automobile
- automobile power
- cooling device
- 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.)
- Expired - Fee Related
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 84
- 230000017525 heat dissipation Effects 0.000 claims abstract description 43
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims description 25
- 239000002826 coolant Substances 0.000 claims description 20
- 238000009423 ventilation Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical compound C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction 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
Landscapes
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model is related to battery cooling technology field, more particularly, to a kind of electric automobile power battery cooling device；Including battery placing box, heat dissipation tank is installed in bottom in the battery placing box, and cooling tube, the external cooling back installation of cooling tube are installed in the heat dissipation tank.Electric automobile power battery cooling device described in the utility model can effectively disperse the heat inside battery placing box, improve security performance, extend the service life of battery.
Description
Technical field
The utility model is related to battery cooling technology fields, cool down and fill more particularly, to a kind of electric automobile power battery
It puts.
Background technology
With country new energy is vigorously supported and power battery key technology it is increasingly mature, have fast charge energy
The electric vehicle of power will be as an important developing direction.The basic principle of existing fast charge power technology is substantially with high current
It charges to reduce the charging time, however large current charge can cause battery modules drastically Wen Sheng, and then cause entire battery pack
Thermal environment is deteriorated, so as to seriously affect the service life of battery pack.In addition, under the high temperature conditions, power battery electrode is likely to occur heat
It is out of control, there is security incident.
Utility model content
The purpose of this utility model is to provide a kind of electric automobile power battery cooling device, by battery radiate platform and
The design of radiator is to solve the technical issues of battery fixed case heat dissipation effect in the prior art is poor.
A kind of electric automobile power battery cooling device provided by the utility model, including battery placing box, which puts
It puts bottom in case and heat dissipation tank is installed, cooling tube, the external cooling back installation of cooling tube are installed in the heat dissipation tank.
Further, the cooling back installation includes coolant storage tank and water supply pump；The two-port of the cooling tube
It stretches out outside the battery placing box, and is connected with the coolant storage tank outside the battery placing box respectively；Institute
Water supply pump is stated on the cooling tube.
Further, be distributed multiple thermal vias on the tank wall of the heat dissipation tank, make hot-air in battery placing box into
Enter in heat dissipation tank.
Further, the side wall of the battery placing box is equipped with multiple ventilation openings, and hollow out is equipped at the ventilation opening
The fixed plate of shape is equipped with cooling fin on the outside of the fixed plate, dust excluding plate is equipped on the outside of the cooling fin, described dust-proof
Plate and cooling fin are secured by bolts in the fixed plate.
Further, cover board is connected at the top of the battery placing box, multiple thermal vias is distributed on the cover board, make institute
The hot-air discharge battery placing box stated in battery placing box is external.
Further, netted protective layer is equipped between the cooling fin and the fixed plate.
Further, the protective layer material is fire resistance fibre.
Further, the heat dissipation tank is prepared using metallic plate.
Further, the dust-proof plate surface covering electrostatic prevention suction membrane.
Further, the fixed plate is prepared using metallic plate, and the thickness of the fixed plate is 10mm-15mm.
A kind of electric automobile power battery cooling device provided by the utility model compared with prior art have below into
Step：
1st, by the electric automobile power battery cooling device in the utility model, including battery placing box, the battery
Installation heat dissipation tank in bottom in placing box, the interior installation cooling tube of the heat dissipation tank, the design of the external cooling back installation of cooling tube,
The cooling-cycle device can provide coolant, cooling water or cooling air etc., and described dissipate is taken away by the cooling tube
Hot-air in hot tank reduces the temperature in heat dissipation tank, by the effect of heat transfer, so as to reduce the temperature inside battery placing box
Degree plays the role of cooling down battery, extends the service life of battery.
2nd, battery described in the utility model and the condenser pipe are close on the heat dissipation tank outer roof and inner roof wall, institute
It is standby using made of metal to state roof, there is good heat conductivility, can effectively reduce the temperature of battery bottom.
3rd, cooling back installation described in the utility model includes coolant storage tank and water supply pump；The two of the cooling tube
Port is stretched out respectively outside the battery placing box, and is connected with the coolant storage tank outside the battery placing box
Design, the coolant storage box be equipped with liquid outlet, liquid return hole, coolant by the liquid outlet enter the heat dissipation tank
Interior, coolant cycles in the cooling tube, by heat transfer theory, can effectively reduce the temperature on the cooling tube periphery,
So as to reduce the in vivo temperature of heat dissipation tank, air in the battery placing box is constantly into heat dissipation tank, shown in reducing
Temperature in battery placing box, so as to accelerate the heat dissipation of battery, the effective service life for extending battery.
4th, the utility model is multilayered structure by the radiator, is followed successively by dust excluding plate, cooling fin from top to bottom and engraves
The design of empty fixed plate can improve rate of heat dispation, and the design of the dust excluding plate, can be while heat dissipation, can be effective
Prevent external dust from entering inside battery placing box.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it describes below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the structure diagram (sectional view) of electric automobile power battery cooling device described in the utility model；
Fig. 2 is the structure diagram (bottom view) of heat dissipation tank inner top described in the utility model；
Fig. 3 is enlarged drawing at A in Fig. 1；
Fig. 4 is the structure diagram (top view) at the outer top of heat dissipation tank described in the utility model；
Reference sign：
1- battery placing boxes；2- heat dissipation tanks；3- cooling tubes；4- coolant storage boxes；5- water supply pumps；6- ventilation openings；7- consolidates
Fixed board；8- cooling fins；9- dust excluding plates；10- cover boards；11- protective layers；12- thermometers；13- battery fixing grooves；14- liquid outlets；
15- liquid return holes；16- batteries；17- liquid replaces import；18- liquid replaces outlet.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected scope.
, it is necessary to explanation in the description of the utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " liquid is put down ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
The utility model must have specific with the device or element for simplifying description rather than instruction or hint meaning for ease of description
Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for description purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
As shown in Figure 1, a kind of electric automobile power battery cooling device, including battery placing box 1, the battery placing box
Heat dissipation tank 2 is installed in interior bottom, installs cooling tube 3 in the heat dissipation tank, the cooling tube is installed on the inner top of the heat dissipation tank, institute
The top exterior walls for stating heat dissipation tank are equipped with battery fixing groove 13 so that battery 16 is fixed in the battery fixing groove, described to dissipate
Multiple thermal vias are distributed on the tank wall of hot tank, the hot-air in battery placing box is made to enter in heat dissipation tank, outside the cooling tube
Connect cooling back installation.The cooling-cycle device can provide coolant, cooling water or cooling air etc., by described cold
But pipe takes away the hot-air in the heat dissipation tank, the temperature in heat dissipation tank is reduced, by the effect of heat transfer, so as to reduce battery
Temperature inside placing box plays the role of cooling down battery, extends the service life of battery, the battery and the condenser pipe point
It is not close on the heat dissipation tank outer roof and inner roof wall, the roof is standby using made of metal, has good heat conductivility, can
Effectively to reduce the temperature of battery bottom.
As shown in Figure 1, the cooling back installation includes coolant storage tank 4 and water supply pump 5；The both ends of the cooling tube
Mouth is stretched out respectively outside the battery placing box, and is connected with the coolant storage tank outside the battery placing box,
The coolant storage box is equipped with liquid outlet 14, liquid return hole 15, liquid and replaces import 17 and liquid replacement outlet 18, described cold
But the both ends of pipe connect the liquid outlet and the liquid return hole respectively, on the cooling tube that the cooling tube is connected with the liquid outlet
Water supply pump is installed, the water supply pump is installed on outside the battery placing box.Coolant is dissipated by the liquid outlet into described
In hot tank, coolant cycles in the cooling tube, by heat transfer theory, can effectively reduce the temperature on the cooling tube periphery
Degree, so as to reduce the in vivo temperature of heat dissipation tank, air in the battery placing box is constantly into heat dissipation tank, so as to reduce
Show the temperature in battery placing box, so as to accelerate the heat dissipation of battery, the effective service life for extending battery.
As shown in Figure 1, the side wall of the battery placing box is equipped with multiple ventilation openings 6, it is equipped with and engraves at the ventilation opening
The fixed plate 7 of empty shape is equipped with cooling fin 8 on the outside of the fixed plate, dust excluding plate 9, institute is equipped on the outside of the cooling fin
It states dust excluding plate and cooling fin is secured by bolts in the fixed plate.By the ventilation opening, in the battery placing box
Hot-air sheds from the ventilation opening, and ventilation opening is excessive, is easily accessible dust, can be effective by the design of the dust excluding plate
Dust is avoided to enter the inside of the battery placing box, the design of the dust excluding plate plays dust-proof operation use, the dust excluding plate
Cooling fin is equipped between the fixed plate, shedding for hot-air in the battery placing box, equally, the fixed plate can be accelerated
It is filled for hollow out, and the fixed plate is standby using made of metal such as iron, copper, can effectively carry out the transmission of heat；The dust excluding plate and
Cooling fin is secured by bolts in the fixed plate, which plays the role of reinforcing dust excluding plate and the cooling fin, makes
It obtains dust excluding plate and preferably protects the ventilation opening, avoid the entrance of dust, and the design of the cooling fin, accelerate the expansion of heat
It dissipates.
As shown in Figure 1, being connected with cover board 10 at the top of the battery placing box, multiple thermal vias are distributed on the cover board,
The hot-air in the battery placing box is made to discharge the battery placing box external.The cover board and battery placing box activity
Connection, facilitates the preservation and taking-up of battery；The design of the cover board, it is possible to prevente effectively from dust enters the battery placing box
Interior, the cover board is equipped with multiple heat emission holes, and the hot-air in the battery placing box can be spread out from top, so as to band
The heat of battery top is walked, extends the service life of battery.
Netted protective layer 11 is equipped between cooling fin described in the utility model and the fixed plate, the protective layer material is
Fire resistance fibre.The protective layer is designed as net structure, can not influence the diffusion of air in the battery placing box, the guarantor
The material of sheath is fire resistance fibre, can be the sprawling for controlling the intensity of a fire fire occurs situations such as.
As shown in Figure 1, thermometer 12 is equipped in the coolant storage box, it can be according to the situation of thermometer, in time more
Change the coolant in the coolant storage tank.
As shown in Fig. 2, the cooling tube is mounted on for S types in the top inner wall of the heat dissipation tank, the cooling is added
Pipe and the contact area of the top inner wall of the heat dissipation tank, can effectively reduce the heat of the top inner wall of the heat dissipation tank, pass through
Conduction of heat so as to take away the heat of battery bottom, plays the role of radiating to battery, so as to protect battery, extends battery
Service life.
As shown in figure 4, the table top upper end of the battery heat dissipation platform is equipped with battery fixing groove 13, consolidating for battery can be facilitated
It is fixed, play firm effect.
Dust-proof plate surface covering electrostatic prevention suction membrane, avoids in air dried situation described in the utility model embodiment
Lower generation charge so that in dust adsorption to the dust excluding plate, cause the blocking of the dust excluding plate.
In the utility model embodiment, the heat dissipation tank and the fixed plate are standby using made of metal, and copper, aluminium may be employed
Alloy is iron standby, can effectively accelerate the heat diffusion inside the battery placing box and go out, reduce the heat of battery circumferential,
So as to reduce the heat of cell wall, effectively extend the service life of battery.
The course of work of electric automobile power battery cooling device：Battery is placed into the battery placing box, is passed through
Cooling water in the cooling storage box is pumped into the cooling tube by the water supply pump, to being dissipated at the top of the heat dissipation tank
Heat, by heat transfer process, so as to take away the heat of battery bottom, the heat in the battery placing box also passes through the battery
The side wall of placing box sheds, and passes sequentially through fixed plate, cooling fin and dust excluding plate, rejects heat to the external side of battery placing box, institute
Stating battery placing box internal heat can also shed from the cover board, and the cover board is equipped with ventilation opening, take away battery top heat
Amount, the dust excluding plate can keep out extraneous dust and enter in the battery placing box, influence the heat dissipation of battery.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from this practicality newly
The scope of each embodiment technical solution of type.
Claims (10)
1. a kind of electric automobile power battery cooling device, it is characterised in that：Including battery placing box, bottom in the battery placing box
Heat dissipation tank is installed in portion, and cooling tube, the external cooling back installation of cooling tube are installed in the heat dissipation tank.
2. electric automobile power battery cooling device according to claim 1, it is characterised in that：The cooling back installation
Including coolant storage tank and water supply pump；The two-port of the cooling tube is stretched out respectively outside the battery placing box, and with position
In the coolant storage tank connection outside the battery placing box；The water supply pump is mounted on the cooling tube.
3. electric automobile power battery cooling device according to claim 2, it is characterised in that：The tank wall of the heat dissipation tank
The upper multiple thermal vias of distribution, make the hot-air in battery placing box enter in heat dissipation tank.
4. electric automobile power battery cooling device according to claim 3, it is characterised in that：The battery placing box
Side wall is equipped with multiple ventilation openings, and the fixed plate of Openworks shape is equipped at the ventilation opening, is equipped on the outside of the fixed plate
Cooling fin is equipped with dust excluding plate on the outside of the cooling fin, and the dust excluding plate and cooling fin are secured by bolts in the fixation
On plate.
5. electric automobile power battery cooling device according to claim 4, it is characterised in that：The battery placing box
Top is connected with cover board, and multiple thermal vias are distributed on the cover board, and the hot-air in the battery placing box is made to discharge the electricity
Pond placing box is external.
6. electric automobile power battery cooling device according to claim 5, it is characterised in that：The cooling fin with it is described
Netted protective layer is equipped between fixed plate.
7. electric automobile power battery cooling device according to claim 6, it is characterised in that：The protective layer material is
Fire resistance fibre.
8. electric automobile power battery cooling device according to claim 7, it is characterised in that：The heat dissipation tank is using gold
Belong to plate to prepare.
9. electric automobile power battery cooling device according to claim 8, it is characterised in that：The dust-proof plate surface is covered
Lid electrostatic prevention suction membrane.
10. electric automobile power battery cooling device according to claim 9, it is characterised in that：The fixed plate uses
Prepared by metallic plate, the thickness of the fixed plate is 10mm-15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721387751.9U CN207426072U (en) | 2017-10-25 | 2017-10-25 | A kind of electric automobile power battery cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721387751.9U CN207426072U (en) | 2017-10-25 | 2017-10-25 | A kind of electric automobile power battery cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207426072U true CN207426072U (en) | 2018-05-29 |
Family
ID=62308826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721387751.9U Expired - Fee Related CN207426072U (en) | 2017-10-25 | 2017-10-25 | A kind of electric automobile power battery cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207426072U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917412A (en) * | 2018-06-29 | 2018-11-30 | 河南玉发磨料有限公司 | A kind of white fused alumina block afterheat utilizing system |
| CN108963382A (en) * | 2018-07-17 | 2018-12-07 | 王志强 | A kind of new-energy automobile power battery cooling system |
| CN108987847A (en) * | 2018-07-17 | 2018-12-11 | 王志强 | A kind of cooling control method of new-energy automobile power battery |
| CN109004313A (en) * | 2018-07-24 | 2018-12-14 | 李的根 | A kind of automobile batteries cooling system |
| CN109037836A (en) * | 2018-07-24 | 2018-12-18 | 李的根 | A method of improving automobile batteries self-shield ability |
| CN109149005A (en) * | 2018-08-13 | 2019-01-04 | 安徽力高新能源技术有限公司 | A kind of new energy car battery cooling device |
| CN113306176A (en) * | 2021-05-19 | 2021-08-27 | 重庆理工大学 | Microchannel thermoplastic composite material and preparation method thereof |
-
2017
- 2017-10-25 CN CN201721387751.9U patent/CN207426072U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917412A (en) * | 2018-06-29 | 2018-11-30 | 河南玉发磨料有限公司 | A kind of white fused alumina block afterheat utilizing system |
| CN108963382A (en) * | 2018-07-17 | 2018-12-07 | 王志强 | A kind of new-energy automobile power battery cooling system |
| CN108987847A (en) * | 2018-07-17 | 2018-12-11 | 王志强 | A kind of cooling control method of new-energy automobile power battery |
| CN108987847B (en) * | 2018-07-17 | 2020-12-08 | 任才银 | Cooling control method for new energy automobile power battery |
| CN109004313A (en) * | 2018-07-24 | 2018-12-14 | 李的根 | A kind of automobile batteries cooling system |
| CN109037836A (en) * | 2018-07-24 | 2018-12-18 | 李的根 | A method of improving automobile batteries self-shield ability |
| CN109004313B (en) * | 2018-07-24 | 2019-12-06 | 柳州市超越科技有限公司 | Cooling system for automobile battery |
| CN109037836B (en) * | 2018-07-24 | 2019-12-27 | 上海豪骋智能科技有限公司 | Method for improving self-protection capability of automobile battery |
| CN109149005A (en) * | 2018-08-13 | 2019-01-04 | 安徽力高新能源技术有限公司 | A kind of new energy car battery cooling device |
| CN113306176A (en) * | 2021-05-19 | 2021-08-27 | 重庆理工大学 | Microchannel thermoplastic composite material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 |