CN110416657A - A kind of electri forklift secondary lithium battery gas-liquid coupling cooling device - Google Patents
A kind of electri forklift secondary lithium battery gas-liquid coupling cooling device Download PDFInfo
- Publication number
- CN110416657A CN110416657A CN201910527198.1A CN201910527198A CN110416657A CN 110416657 A CN110416657 A CN 110416657A CN 201910527198 A CN201910527198 A CN 201910527198A CN 110416657 A CN110416657 A CN 110416657A
- Authority
- CN
- China
- Prior art keywords
- heat dissipation
- cooling
- cooling tube
- secondary lithium
- lithium battery
- 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.)
- Pending
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Classifications
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
-
- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
-
- 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
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- 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 invention discloses a kind of electri forklift secondary lithium battery gas-liquids to couple cooling device, including heat dissipation sleeve and battery placing box, and heat dissipation sleeve is located inside battery placing box, and heat dissipation sleeve inner is used for placing battery；The sleeve outer wall that radiates is equipped with helical heat spreader fin, and cooling tube is equipped on the outside of heat dissipation sleeve, and cooling tube cross section is semicircle, and cooling tube is spirally wound on heat dissipation sleeve outer wall, and vertical plane and the heat dissipation sleeve of cooling tube are bonded to each other；Battery placing box includes cabinet, top plate and bottom plate, and top plate and bottom plate is connect with cabinet respectively.The device of the invention is simple for structure, and space utilization rate is high, can be realized the rapid cooling to electri forklift secondary lithium battery and cooling, it is ensured that the safety of secondary lithium battery improves the cycle performance of lithium ion battery, reduces maintenance cost.
Description
Technical field
Present invention relates particularly to a kind of electri forklift secondary lithium battery gas-liquids to couple cooling device.
Background technique
Secondary lithium battery is the battery by two kinds of open architecture materials as the two poles of the earth material, and lithium ion is in charge and discharge
Another pole is moved to from a pole inlaid scheme in the process.Secondary lithium battery has energy close compared with other types battery
The advantages that spending high, operating voltage height, having extended cycle life, has been widely used in industrial circle.Due in charge and discharge process
Anode and electrolyte interaction generate a large amount of heat, steeply rise, cause under battery working performance so as to cause battery temperature
Drop, cycle life shorten, or even cause battery catches fire and explosion.
Secondary lithium battery on electri forklift can generate amount of heat during the work time, once battery temperature exceeds
Optimum working temperature range, it will influence the working performance of battery, shorten cycle life；The battery of electri forklift mainly leads at present
It crosses battery box outer wall to radiate, this method cooling efficiency is low, and effect is poor.
Summary of the invention
For above situation, to overcome the shortcomings of existing technologies, the present invention provides a kind of electri forklift secondary lithium-ion electricity
Pond gas-liquid couples cooling device.
To achieve the goals above, the present invention the following technical schemes are provided:
A kind of electri forklift secondary lithium battery gas-liquid coupling cooling device, including heat dissipation sleeve and battery placing box,
Heat dissipation sleeve is located inside battery placing box, and heat dissipation sleeve inner is used for placing battery；
The sleeve outer wall that radiates is equipped with helical heat spreader fin, is equipped with cooling tube on the outside of heat dissipation sleeve, cooling tube cross section is
Semicircle, cooling tube are spirally wound on heat dissipation sleeve outer wall, and vertical plane and the heat dissipation sleeve of cooling tube are bonded to each other；
Battery placing box includes cabinet, top plate and bottom plate, and top plate and bottom plate is connect with cabinet respectively；The sleeve that radiates is fixed to be connected
It connects on bottom plate.
Further, in gap of the cooling tube between helical fin.
Further, it is equipped with the first cooling liquid flowing channel in top plate, the first cooling liquid flowing channel is cooling liquid outlet runner, first
Cooling liquid flowing channel includes first outlet and first entrance, and first entrance is connected with cooling tube outlet.
Further, it is equipped with the second cooling liquid flowing channel in bottom plate, the second cooling liquid flowing channel is coolant inlet runner, second
Cooling liquid flowing channel includes second outlet and second entrance, and second outlet is connected with cooling tube inlet.
Further, cabinet is respectively arranged on the left side and the right side multiple classification heat dissipation channels.
Further, it is provided with baffle at the outer vent of classification heat dissipation channel, baffle is connect with cabinet.
Further, middle and upper part is equipped with fixed bracket on rear side of cabinet, is connected with radiator fan on fixed bracket.
The beneficial effects of the present invention are:
(1) present invention is equipped with helical heat spreader fin in heat dissipation sleeve outer wall, and the setting of helical heat spreader fin increases
Heat dissipation area improves battery radiating efficiency.
(2) present invention is equipped with cooling tube on the outside of heat dissipation sleeve, wherein cooling tube cross section is semicircle, cooling tube spiral shell
It is wound on to rotation shape heat dissipation sleeve outer wall, vertical plane and the heat dissipation sleeve of cooling tube are bonded to each other；Be capable of increasing in this way cooling tube with
The contact area of heat dissipation sleeve improves cooling efficiency to quickly take away the heat that secondary lithium battery distributes.
(3) the built-in cooling liquid flowing channel that the present invention uses, avoids structural complexity caused by deployment tube road, reduces
The volume of battery placing box is conducive to coolant liquid heat dissipation.
(4) present invention uses stagewise heat dissipation channel, makes uniformity of temperature profile in battery placing box.
(5) the device of the invention is simple for structure, and space utilization rate is high, can be realized to electri forklift secondary lithium battery
Rapid cooling and cooling, it is ensured that the safety of secondary lithium battery improves the cycle performance of lithium ion battery, reduce
Maintenance cost.
Detailed description of the invention
Fig. 1 is the whole knot that single secondary lithium battery, heat dissipation sleeve, heat dissipation floor and cooling tube are combined
Structure schematic diagram.
Fig. 2 is the half-section diagram of heat dissipation sleeve and the floor that radiates.
Fig. 3 is the longitudinal sectional view (in figure, having concealed secondary lithium battery) of Fig. 1.
Fig. 4 is to remove battery to place the perspective view after roof box.
Fig. 5 is the cross-sectional view that battery places the first cooling liquid flowing channel of roof box.
Fig. 6 is the cross-sectional view of the second cooling liquid flowing channel of battery placing box bottom plate.
Specific embodiment
Below in conjunction with attached drawing, further details of the technical solution of the present invention, it is noted that specific implementation
Mode is detailed description of the invention, is not construed as limitation of the invention.
The present invention provides a kind of electri forklift secondary lithium battery gas-liquids to couple cooling device, as shown in figure 4, including
Radiate sleeve 2 and battery placing box, and heat dissipation sleeve 2 is located inside battery placing box, heat dissipation sleeve and the fixed company of battery placing box
It connects, is used for placing battery in the cylinder of the sleeve that radiates, in the present embodiment, secondary lithium battery 1 is located inside heat dissipation sleeve 2.In
In some preferred modes, heat dissipation sleeve and battery placing box pass through welded connecting.
In some preferred modes, as shown in Figs. 1-2, heat dissipation sleeve 2 is hollow cylindrical, can be by secondary lithium-ion
Battery 1 is put into heat dissipation sleeve 2, and the concrete shape for the sleeve that radiates can be configured into different shapes according to the shape of battery
Shape；In some preferred modes, heat dissipation 2 outer wall of sleeve is equipped with helical heat spreader fin 3, and helical heat spreader fin 3 is set
It sets and increases heat dissipation area, facilitate the air flowing in battery placing box.
In some preferred modes, as shown in Figure 1,3, it is equipped with cooling tube 4 on the outside of the sleeve 2 that radiates, some preferred
In mode, cooling tube cross section is semicircle, and cooling tube 4 includes an inner cavity, an arcwall face and a vertical plane, wherein
Inner cavity is bonded to each other for storing coolant liquid, vertical plane and the heat dissipation sleeve 2 of cooling tube 4, is capable of increasing cooling tube 4 in this way and dissipates
The contact area of hot jacket cylinder 2, to quickly take away the heat that secondary lithium battery 1 distributes；Specifically, cooling tube 4
Cross section is D-shaped, and vertical plane and the heat dissipation sleeve 2 of cooling tube 4 are bonded to each other.
In some preferred modes, cooling tube 4 is spirally wound on heat dissipation 2 outer wall of sleeve, further, due to heat dissipation
Fin 3 be it is spiral, radiated rib 3 is spirally fixed on the outer wall of heat dissipation sleeve, and cooling tube is located at adjoining spiral shape rib
In gap between piece, it is spirally wound on heat dissipation 2 outer wall of sleeve, helical heat spreader fin 3 can support cooling tube 4, moreover it is possible to
Enough so that cooling tube 4 is in spiral status；As shown in figure 3, Fig. 3, which gives cooling tube 4, is spirally wound on heat dissipation 2 outer wall of sleeve
State.
In some preferred modes, cooling tube 4 uses magnesium alloy material, and magnesium alloy material is at low cost, light weight,
Heat dissipation performance is good, helps to improve radiating efficiency.
In some preferred modes, as shown in figure 4, battery placing box includes cabinet 6, top plate 9 and bottom plate 12, some
In preferred mode, top plate 9 is connected by screw to cabinet 6, and bottom plate 12 can also be connected by screw to cabinet 6, some
In preferred mode, top plate 9 and bottom plate 12 are metal plate, are conducive to radiate using metal plate, further, using aluminium alloy
Material, aluminum alloy materials are light-weight, and intensity is high, perfect heat-dissipating.
In some preferred modes, as shown in figure 5, the first cooling liquid flowing channel 10 is equipped in top plate 9, the first cooling liquid stream
Road 10 is cooling liquid outlet runner, and in some preferred modes, the first cooling liquid flowing channel 10 includes first outlet 11 and first
Entrance 21, first entrance 21 are connected with cooling tube outlet, and the coolant liquid in cooling tube enters the first coolant liquid by first entrance 21
Runner 10, last coolant liquid are flowed out by first outlet 11；In some preferred modes, the quantity of first outlet 11 is one,
The quantity of first entrance 21 be it is multiple, the quantity of first entrance 21 and the quantity of cooling tube are consistent, also consistent with the quantity of battery,
In the present embodiment, first entrance 21 is six, and first outlet 11 is one, in some preferred modes, as shown in figure 5, the
One outlet 11 and the cross section of first entrance 21 are circle, and still, the cross section of cooling tube 4 is semicircle, therefore, in cooling
When pipe 4 is connect with circular first entrance 21, increases a semicircular tablet, block another semicircle of first entrance 21
Opening；In some preferred modes, first entrance 21 and cooling tube 4 are by being welded to connect, in the welding process, while by one
A semicircular magnesium alloy sheet metal is welded at first entrance 21, and makes magnesium alloy sheet metal and semicircle cooling tube
Connection, so that first entrance 21 connect stronger with cooling tube 4, and leakproofness is preferable.It is preferred at other
In mode, the cross section of first outlet 11 is circle, and the cross section of first entrance 21 is semicircle, is convenient for first entrance 21 in this way
It is connect with cooling tube 4.
In some preferred modes, as shown in fig. 6, being equipped with the second cooling liquid flowing channel 13, the second coolant liquid in bottom plate 12
Runner 13 is coolant inlet runner, and in some preferred modes, the second cooling liquid flowing channel 13 includes second outlet 22 and the
Two entrances 14, second outlet 22 are connected with 4 entrance of cooling tube, and coolant liquid enters the second cooling liquid flowing channel 13 by second entrance 14,
Coolant liquid in second cooling liquid flowing channel 13 is flowed out by second outlet 22, subsequently into cooling tube 4；In some preferred modes
In, the quantity of second outlet 22 be it is multiple, the quantity of second entrance 14 is one, the quantity of second outlet 22 and the number of cooling tube
Amount is consistent, also consistent with the quantity of battery, and in the present embodiment, second outlet 22 is six, and second entrance 14 is one, some
In preferred mode, as shown in fig. 6, the cross section of second outlet 22 and second entrance 14 is circle, still, cooling tube 4
Cross section is semicircle, therefore, when cooling tube 4 is connect with circular second outlet 22, increases a semicircular tablet,
Block another semicircular opening of second outlet 22；In some preferred modes, second outlet 22 and cooling tube 4 pass through welding
Connection, in the welding process, while a semicircular magnesium alloy sheet metal being welded at second outlet 22, and make magnesium
Al-alloy metal piece is connect with semicircle cooling tube, so that second outlet 22 connect with cooling tube 4 it is stronger, and
Leakproofness is preferable.In other preferred modes, the cross section of second entrance 14 is circle, and the cross section of second outlet 22 is
Semicircle connect convenient for second outlet 22 with cooling tube 4 in this way.The present invention is using built-in the first cooling liquid flowing channel 10 and the
Two cooling liquid flowing channels 13, avoid structural complexity caused by deployment tube road, reduce the volume of battery placing box.
In some preferred modes, as shown in figure 4, cabinet 6 is respectively arranged on the left side and the right side multiple classification heat dissipation channels 5,
It is provided with baffle 24 at the outer vent of classification heat dissipation channel 5, baffle 24 is connect with cabinet 6, and baffle 24 and the angle of cabinet 6 are big
The small size for determining degree of heat radiation；In some preferred modes, baffle 24 is connect with cabinet 6 by welding, In
In other preferred modes, baffle 24 and cabinet 6 are articulated and connected, and can open baffle 24, baffle 24 is made to be in a certain state；
The degree that baffle 24 opens and closes is different, and the angle between baffle 24 and cabinet 6 is different, and degree of heat radiation is different.
In some preferred modes, as shown in figure 4,6 rear side middle and upper part of the cabinet is equipped with fixed bracket 7, it is described solid
Radiator fan 8 is connected on fixed rack 7；Radiator fan setting is the reason of 6 rear side of cabinet and benefit: radiator fan 8 can in this way
To cooperate the classification heat dissipation channel on cabinet 6, is conducive to accelerate air circulation, improves radiating efficiency；Radiator fan is arranged in case
The middle and upper part reason and benefit of body 6: 1. hot-air density is small, is distributed in 6 top of cabinet, needs to be discharged as early as possible；2. according to cooling
The design of pipe 4, cooling liquid outlet is located at 6 top of cabinet in cooling tube 4, and therefore, the coolant liquid in cooling tube 4 is by under cabinet 6
During portion to top, the temperature of coolant liquid constantly rises, these heats can be taken away one by the fan that middle and upper part is arranged in
Point, can dispersing with accelerated heat, improve cooling efficiency.
In some preferred modes, as shown in figure 4, the shaft of radiator fan is supported and fixed by fixing bracket 7.
Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment should fall within the scope of the present invention.
Claims (7)
1. a kind of electri forklift secondary lithium battery gas-liquid couples cooling device, characterized in that including heat dissipation sleeve and battery
Placing box, heat dissipation sleeve are located inside battery placing box, and heat dissipation sleeve is connect with battery placing box, and heat dissipation sleeve inner is for putting
Set battery；
The sleeve outer wall that radiates is equipped with helical heat spreader fin, and cooling tube is equipped on the outside of heat dissipation sleeve, and cooling tube cross section is semicircle
Shape, cooling tube are spirally wound on heat dissipation sleeve outer wall, and vertical plane and the heat dissipation sleeve of cooling tube are bonded to each other；
Battery placing box includes cabinet, top plate and bottom plate, and top plate and bottom plate is connect with cabinet respectively.
2. a kind of electri forklift secondary lithium battery gas-liquid according to claim 1 couples cooling device, characterized in that
Cooling tube is in the gap between helical fin.
3. a kind of electri forklift secondary lithium battery gas-liquid according to claim 1 couples cooling device, characterized in that
It is equipped with the first cooling liquid flowing channel in top plate, the first cooling liquid flowing channel is cooling liquid outlet runner, and the first cooling liquid flowing channel includes the
One outlet and first entrance, first entrance are connected with cooling tube outlet.
4. a kind of electri forklift secondary lithium battery gas-liquid according to claim 1 couples cooling device, characterized in that
It is equipped with the second cooling liquid flowing channel in bottom plate, the second cooling liquid flowing channel is coolant inlet runner, and the second cooling liquid flowing channel includes the
Two outlets and second entrance, second outlet are connected with cooling tube inlet.
5. a kind of electri forklift secondary lithium battery gas-liquid according to claim 1 couples cooling device, characterized in that
Cabinet is respectively arranged on the left side and the right side multiple classification heat dissipation channels.
6. a kind of electri forklift secondary lithium battery gas-liquid according to claim 1 couples cooling device, characterized in that
It is provided with baffle at the outer vent of classification heat dissipation channel, baffle is connect with cabinet.
7. a kind of electri forklift secondary lithium battery gas-liquid according to claim 1 couples cooling device, characterized in that
Middle and upper part is equipped with fixed bracket on rear side of cabinet, connects radiator fan on fixed bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910527198.1A CN110416657A (en) | 2019-06-18 | 2019-06-18 | A kind of electri forklift secondary lithium battery gas-liquid coupling cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910527198.1A CN110416657A (en) | 2019-06-18 | 2019-06-18 | A kind of electri forklift secondary lithium battery gas-liquid coupling cooling device |
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| Publication Number | Publication Date |
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| CN110416657A true CN110416657A (en) | 2019-11-05 |
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Family Applications (1)
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|---|---|---|---|
| CN201910527198.1A Pending CN110416657A (en) | 2019-06-18 | 2019-06-18 | A kind of electri forklift secondary lithium battery gas-liquid coupling cooling device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133983A (en) * | 2020-09-25 | 2020-12-25 | 湖南衡盈电子科技有限公司 | Low-speed vehicle battery and heat dissipation device thereof |
| CN116435656A (en) * | 2023-03-17 | 2023-07-14 | 梵智达科技(深圳)有限公司 | Energy storage battery box with efficient heat insulation structure |
| CN117199624A (en) * | 2023-11-07 | 2023-12-08 | 温州鑫泰新材料股份有限公司 | Heat conduction and heat dissipation cover plate for power energy storage |
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| CN206947467U (en) * | 2017-06-28 | 2018-01-30 | 中能东道集团有限公司 | A kind of battery bag shunting cooling device |
| CN108206256A (en) * | 2018-02-07 | 2018-06-26 | 华南理工大学 | A kind of light-weighted electric vehicle lithium-ion-power cell heat management liquid cooling system |
| CN208069427U (en) * | 2018-02-27 | 2018-11-09 | 广利通卓越科技（深圳）有限公司 | Water cooling charging pile group and its water cooling charging pile |
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| CN201936970U (en) * | 2010-12-29 | 2011-08-17 | 比亚迪股份有限公司 | Power battery module |
| CN202712372U (en) * | 2012-07-26 | 2013-01-30 | 华南理工大学 | Battery cooling device for electric vehicle |
| CN206947467U (en) * | 2017-06-28 | 2018-01-30 | 中能东道集团有限公司 | A kind of battery bag shunting cooling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133983A (en) * | 2020-09-25 | 2020-12-25 | 湖南衡盈电子科技有限公司 | Low-speed vehicle battery and heat dissipation device thereof |
| CN116435656A (en) * | 2023-03-17 | 2023-07-14 | 梵智达科技(深圳)有限公司 | Energy storage battery box with efficient heat insulation structure |
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| CN117199624A (en) * | 2023-11-07 | 2023-12-08 | 温州鑫泰新材料股份有限公司 | Heat conduction and heat dissipation cover plate for power energy storage |
| CN117199624B (en) * | 2023-11-07 | 2024-01-30 | 温州鑫泰新材料股份有限公司 | Heat conduction and heat dissipation cover plate for power energy storage |
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Application publication date: 20191105 |
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