CN209626374U - Liquid cooling plate, battery pack and vehicle - Google Patents
Liquid cooling plate, battery pack and vehicle Download PDFInfo
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- CN209626374U CN209626374U CN201822182107.9U CN201822182107U CN209626374U CN 209626374 U CN209626374 U CN 209626374U CN 201822182107 U CN201822182107 U CN 201822182107U CN 209626374 U CN209626374 U CN 209626374U
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- cooling plate
- liquid cooling
- liquid
- flow channel
- spoiler
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A kind of liquid cooling plate provided by the utility model is provided with the battery pack of the liquid cooling plate and is provided with the vehicle of the battery pack.Coolant flow channel is formed in the liquid cooling plate, circulation has coolant liquid in the coolant flow channel, the upper surface of the liquid cooling plate is equipped with the inlet and liquid outlet being connected to the coolant flow channel, the coolant liquid enters the coolant flow channel by the inlet, the liquid cooling plate is flowed out by the liquid outlet, spoiler is equipped in the coolant flow channel, the cross-sectional area of the spoiler of temperature higher part position is greater than the cross-sectional area of the spoiler of temperature lower position in the coolant flow channel in the coolant flow channel.And then the Reynolds number and the coefficient of heat transfer of the coolant liquid of liquid cooling plate different parts are adjusted, realize that liquid cooling plate to the Homogeneouslly-radiating of each power battery, extends the service life of power battery, ensure that the safety of vehicle.
Description
Technical field
The utility model relates to liquid-cooling heat radiation technical field, in particular to a kind of liquid cooling plate.
Background technique
The development of electric car be unable to do without electrokinetic cell system, and it is whole to support that electrokinetic cell system for electric vehicle provides electric energy
Vehicle traveling, power battery is as a chemical component, and there are this attributes of its intrinsic internal resistance, and no matter power battery is charging shape
State or discharge condition, as long as having electric current by internal resistance, all can the internal resistance of cell generate heat, cause battery temperature to increase, temperature
Excessively high to will cause inside battery damage, we just need to cool down electrokinetic cell system in this way, reach one most preferably
Working condition.
Carrying out cooling to power battery by liquid cooling plate is technological means common in this field, but existing liquid cooling
Plate can not accomplish uniform decrease in temperature to all batteries, and the coolant temperature closer to inlet is lower, and cooling effect is better, and more leans on
The coolant temperature of nearly liquid outlet is higher, and cooling effect is poorer.
Utility model content
In view of this, the utility model can accomplish the liquid cooling plate of uniform decrease in temperature, a kind of liquid cooling plate, the liquid to multiple batteries
Be formed with the coolant flow channel logical for cooling liquid stream in cold plate, the liquid cooling plate be equipped with the inlet being connected to the coolant flow channel and
Liquid outlet, it is characterised in that: several spoilers are equipped in the coolant flow channel, temperature higher part position disturbs in the coolant flow channel
The cross-sectional area for flowing part is greater than the cross-sectional area of the spoiler of temperature lower position in the coolant flow channel.
In one embodiment, the shunting muscle for being shunted to the coolant liquid is equipped in the coolant flow channel, it is described
The flow direction that muscle is shunted along the coolant liquid is arranged.
In one embodiment, the thermal expansion coefficient of the spoiler is 11*10-6/ DEG C~80*10-6/℃。
In one embodiment, the spoiler is strip, and several spoilers are along the flow direction interval of the coolant liquid
Setting.
In one embodiment, the spoiler is square block, and several spoilers are more intensive closer to the liquid outlet
Setting.
In one embodiment, the inlet and the liquid outlet are located at the same end of the liquid cooling plate.
In one embodiment, the liquid cooling plate includes upper plate and lower plate, the upper plate and the lower plate be provided with it is described
Corresponding first slot of coolant flow channel and the second slot are connected with the lower plate in the upper plate and the lower plate by the upper plate
Between limit the coolant flow channel.
On the other hand, the utility model also proposes a kind of battery pack, including pallet, above-mentioned liquid cooling plate and several peaces
Loaded on the power battery in pallet, the pallet includes frame and bottom plate, and the frame is set to the floor peripheral, the liquid
Cold plate is set between the power battery and the bottom plate.
On the other hand, the utility model also proposed a kind of vehicle, and the vehicle is provided with above-mentioned battery pack.
In conclusion the utility model proposes a kind of liquid cooling plate, being provided with the battery pack of the liquid cooling plate and being provided with
The vehicle of the battery pack.The coolant flow channel logical for cooling liquid stream, cooling stream are formed in the liquid cooling plate that the utility model is proposed
Spoiler is equipped in road, according to the calorific value of corresponding power battery difference can occur for the spoiler positioned at liquid cooling plate different parts
Cross-sectional area variation, and then adjust liquid cooling plate different parts coolant liquid Reynolds number and the coefficient of heat transfer, realize liquid cooling plate
To the Homogeneouslly-radiating of each power battery, the service life of power battery is extended, ensure that the safety of vehicle.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is a kind of perspective view of the liquid cooling plate of embodiment of the utility model.
Fig. 2 is the perspective view of the top plate of liquid cooling plate shown in Fig. 1.
Fig. 3 is the perspective view of the bottom plate of liquid cooling plate shown in Fig. 1.
Fig. 4 is that figure is arranged in the spoiler of another embodiment.
Fig. 5 is the partial enlarged view in Fig. 4 at A.
Fig. 6 is the partial enlarged view in Fig. 4 at B.
Appended drawing reference:
Upper plate 10, inlet 11, liquid outlet 13, the first slot 15, water outlet connector 17,
Lower plate 20, the second slot 25,
Muscle 31 is shunted,
Spoiler 40.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that the orientation or positional relationship of the instructions such as term " on ", "lower"
To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitations of the present invention.
Before describing the embodiments in more detail, it should be appreciated that the utility model is not limited in the application hereafter or attached drawing
Described in detailed construction or arrangement of elements.The embodiment that the utility model can be realized for other modes.Also, it should manage
Solution, the words and terms used herein are for illustrative purposes only, should not be interpreted in a limited way." packet used herein
Include ", "comprising", the similar wording such as " having " means comprising items listed thereafter, its equivalent and other additional things.It is special
It is not that when describing " a certain component ", it also may include more that the utility model, which does not limit the quantity of the element as one,
It is a.
Liquid cooling plate as shown in Figure 1 is scattered to carry out for power battery to electric car or hybrid electric vehicle for installing
Heat.It is formed with coolant flow channel (not labeled) in the coldplate, in use process, circulation has coolant liquid in coolant flow channel；Liquid cooling plate
With opposite upper and lower surface, the upper surface of liquid cooling plate is the surface on the upside of liquid cooling plate, and the lower surface of liquid cooling plate is under liquid cooling plate
The surface of side.The upper surface of liquid cooling plate is equipped with the inlet 11 and liquid outlet 13 being connected to coolant flow channel, and coolant liquid is by inlet
11 enter coolant flow channel, exchange heat during coolant liquid circulates in coolant flow channel with power battery, and coolant liquid absorbs heat
Amount flows out liquid cooling plate by liquid outlet 13.
Wherein need exist for explaining, of the invention as described in liquid cooling plate in description, about " upper and lower ", etc. direction
Property description be according to for the hand designations in Fig. 1, its purpose is to the convenience of description, and are not that explanation is corresponding
There is such absolute direction and positional relationship between component.
As shown in Figures 3 to 6, spoiler 40 is equipped in coolant flow channel, the protrusion of spoiler 40 is formed in coolant flow channel, disturbs
Stream part 40 is used to increase the Reynolds number and heat exchange efficiency of coolant liquid.
The calorific value of each power battery during discharge in Electric power car or hybrid vehicle there are gap,
Liquid cooling plate should have bigger heat exchange efficiency at the position of the corresponding power battery with bigger thermal discharge, to realize liquid cooling
The Homogeneouslly-radiating of plate.In liquid cooling plate, the cross-sectional area of spoiler 40 is bigger, and the coolant liquid of corresponding position has bigger thunder
Promise number and heat exchange efficiency, i.e., the cross-sectional area of the spoiler 40 of temperature higher part position is greater than temperature in coolant flow channel in coolant flow channel
Spend the cross-sectional area of the spoiler 40 of lower position.It should be understood that cross section described herein refer to spoiler in
Perpendicular to the section of flow direction.
Embodiment one
In the present embodiment, according to production early period experiment or estimate, liquid cooling plate corresponds to the biggish power electric of thermal discharge
Pond setting has the spoiler 40 of bigger cross-sectional area, and generates local turbulence, so improve liquid cooling plate correspond to calorific value compared with
The heat exchange efficiency of big power battery.It can be adjusted in coolant flow channel not by adjusting the cross-sectional area of each spoiler 40
With the Reynolds number and heat exchange efficiency of the coolant liquid at position, the Homogeneouslly-radiating of liquid cooling plate is realized.
Embodiment two
In the present invention, spoiler 40 is made of temperature sensing material, so that change of the spoiler 40 according to coolant temperature
Change and generates volume change.For spoiler 40 in initial temperature, the cross section of each spoiler 40 is all the same.The temperature of spoiler 40
It increases, spoiler 40 will expand and cross section increases, and the temperature of spoiler 40 reduces, and spoiler 40 will be shunk and transversal reduction of area
It is small.The position of the biggish power battery of calorific value, the coolant liquid of the part and the biggish power of the calorific value are corresponded in liquid cooling plate
Battery exchanges heat so that the coolant temperature of the part is also higher, then 40 expanded by heating of spoiler of corresponding site and generate
Local turbulence, and then improve the heat exchange efficiency that liquid cooling plate corresponds to the biggish power battery of calorific value；Correspondingly, corresponding in liquid cooling plate
The position of the lesser power battery of calorific value, the coolant liquid of the part exchange heat with the lesser power battery of the calorific value, make
The coolant temperature for obtaining the part is relatively low, then lesser expansion is shunk or generated to spoiler 40, so that liquid cooling plate is corresponding
The heat exchange efficiency of the lesser power battery of calorific value is lower than the heat exchange efficiency of the corresponding biggish power battery of calorific value.That is, cooling
The cross-sectional area of the spoiler of temperature higher part position is greater than the spoiler of temperature lower position in the coolant flow channel in runner
Cross-sectional area, liquid cooling plate different parts are adjusted by the spoiler 40 of different parts different degrees of contraction or expansion
The Reynolds number and convection transfer rate of coolant liquid, realize the Homogeneouslly-radiating of liquid cooling plate.
More specifically, the thermal expansion coefficient of spoiler 40 is 11*10-6/ DEG C~80*10-6/ DEG C, temperature is every to increase 1 DEG C, disturbs
The cross-sectional area for flowing part 40 increases 11*10-6To 80*10-6, it is preferable that spoiler is polyvinyl chloride spoiler, it should be understood that
It is that spoiler is a kind of embodiment that polyvinyl chloride spoiler is only used as the utility model, the utility model does not limit system
At the material of spoiler, as long as the thermal expansion coefficient for being able to achieve spoiler 40 is 11*10-6/ DEG C~80*10-6/ DEG C.
In some embodiments of the utility model, such as can be on the basis of embodiment 1 and embodiment 2, further
It is designed with following preferred structure.
As shown in Fig. 2, liquid cooling plate includes upper plate 10 and lower plate 20, the upper surface of liquid cooling plate is located at upper plate 10 away from lower plate
20 side, correspondingly, the lower surface of liquid cooling plate is located at the side that lower plate 20 deviates from upper plate 10.Upper plate 10 and lower plate 20 are distinguished
Process the first slot 15 corresponding with coolant flow channel and the second slot 25, be connected by upper plate 10 with lower plate 20 with upper plate 10 and under
Coolant flow channel is limited between plate 20.It should be understood that this is only used as a kind of embodiment of the utility model, in other realities
It applies in example, liquid cooling plate can be integrally formed, then be formed in the interior thereof coolant flow channel, the utility model by modes such as punching presses
The generation type of coolant flow channel is not construed as limiting, as long as the coolant flow channel logical for cooling liquid stream can be formed in liquid cooling plate.
In addition, coolant flow channel bending detour setting, so that heat dissipation area is increased, so that heat dissipation is more evenly.
As shown in figure 3, inlet 11 and liquid outlet 13 are located at the same end of upper plate 10, accordingly, coolant flow channel is by feed liquor
At mouthfuls 11 in liquid cooling plate detour extend to at the liquid outlet 13 of 11 the same end of inlet, on the one hand, facilitate outer water tube with
Liquid cooling plate connection, in addition, coolant liquid gradually absorbs heat during flowing to liquid outlet 13 by inlet 11, temperature is lower cold
But liquid can carry out heat exchange with the higher coolant liquid of temperature, and the Homogeneouslly-radiating of liquid cooling plate is furthermore achieved, promotes whole heat dissipation
Efficiency.
In the embodiment shown in fig. 1, liquid cooling plate further includes the water outlet connector for being inserted in water inlet 11 and water outlet 13
17, facilitate the fast sealing of outer water tube and liquid cooling plate to connect by the way that water outlet connector 17 is arranged.
It is equipped with the shunting muscle 31 for being shunted to coolant liquid in coolant flow channel, shunts muscle 31 and is set along the flow direction of coolant liquid
It sets, the equal runner of muscle 31 is shunted by setting to improve heat exchange efficiency, and shunting muscle 31 is arranged can effectively to promote the strong of liquid cooling plate
Degree.
The protrusion of spoiler 40 is formed in coolant flow channel, and in an embodiment as illustrated in figure 3, spoiler 40 is strip,
The spoiler 40 of several strips is arranged along the flow direction interval of coolant liquid, increases the turbulent journey of the coolant liquid in coolant flow channel
Degree, increases Reynolds number and convection transfer rate, and the final cooling capacity for enhancing liquid cooling plate improves liquid cooling plate to power battery
Heat dissipation effect, extend the service life of power battery, ensure that the safety of electric car or hybrid electric vehicle.It should
Understand, the utility model does not limit the shape of spoiler 40, such as in the embodiment shown in fig. 4, spoiler 40 is
Square block.
Coolant liquid absorbs the heat that each power battery is released along flow direction superposition, so that closer to the coolant liquid of liquid outlet 13
Temperature is higher, and the ability for absorbing heat is poorer.Along the flow direction of coolant liquid, 40 cross section of spoiler closer to liquid outlet 13 is got over
Greatly, so that the Reynolds number of coolant liquid be gradually increased along flow direction, and then the heat absorption capacity of entire liquid cooling plate is improved.
As shown in Figures 4 to 6, the spoiler 40 of square block is specific such as Fig. 5 and figure closer to the more intensive setting of liquid outlet 13
It is sparse compared with the spoiler 40 in Fig. 6 close to liquid outlet 13 close to the spoiler 40 of inlet 11 in Fig. 5 shown in 6, it is close in Fig. 6
The spoiler 40 of liquid outlet 13 is intensive close to the spoiler 40 of inlet 11 compared in Fig. 5, so that cooling be gradually increased along flow direction
The Reynolds number of liquid, and then improve the heat absorption capacity of entire liquid cooling plate.
The utility model also proposed a kind of battery pack, including pallet, above-mentioned liquid cooling plate and several be installed on pallet
Interior power battery, pallet include frame and bottom plate, and frame is set to floor peripheral, and liquid cooling plate is set to power battery and bottom plate
Between, so that liquid cooling plate contacts with power battery and realizes and exchange heat with power battery.
The utility model also proposed a kind of vehicle, which can be electric car or hybrid vehicle, the vehicle
It is provided with above-mentioned battery pack.
In conclusion the utility model proposes a kind of liquid cooling plate, being provided with the battery pack of the liquid cooling plate and being provided with
The vehicle of the battery pack.The coolant flow channel logical for cooling liquid stream, cooling stream are formed in the liquid cooling plate that the utility model is proposed
Spoiler is equipped in road, according to the calorific value of corresponding power battery difference can occur for the spoiler positioned at liquid cooling plate different parts
Cross-sectional area variation, and then adjust liquid cooling plate different parts coolant liquid Reynolds number and the coefficient of heat transfer, realize liquid cooling plate
To the Homogeneouslly-radiating of each power battery, the service life of power battery is extended, ensure that the safety of vehicle.
Concepts described herein may be embodied to other forms without departing from its spirit and characteristics.It is disclosed
Specific embodiment should be considered as illustrative rather than restricted.Therefore, the scope of the utility model is wanted by appended right
It asks, instead of making decisions based on these previous descriptions.Within the literal meaning and equivalent scope of the claims any changes
Change all should belong to these the scope of the claims.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and
Modification.
Claims (9)
1. a kind of liquid cooling plate, the coolant flow channel logical for cooling liquid stream is formed in the liquid cooling plate, the liquid cooling plate is equipped with and institute
State the inlet and liquid outlet of coolant flow channel connection, it is characterised in that: several spoilers are equipped in the coolant flow channel, it is described cold
But in runner the spoiler of temperature higher part position cross-sectional area be greater than the coolant flow channel in temperature lower position flow-disturbing
The cross-sectional area of part.
2. liquid cooling plate as described in claim 1, it is characterised in that: be equipped in the coolant flow channel for the coolant liquid into
The shunting muscle that row shunts, the muscle that shunts are arranged along the flow direction of the coolant liquid.
3. liquid cooling plate as described in claim 1, it is characterised in that: the thermal expansion coefficient of the spoiler is 11*10-6/ DEG C~
80*10-6/℃。
4. liquid cooling plate as described in claim 1, it is characterised in that: the spoiler is strip, several spoiler edges
The flow direction interval of the coolant liquid is arranged.
5. liquid cooling plate as described in claim 1, it is characterised in that: the spoiler is square block, and several spoilers are got over
Close to the more intensive setting of the liquid outlet.
6. liquid cooling plate as described in claim 1, it is characterised in that: the inlet and the liquid outlet are located at the liquid cooling plate
The same end.
7. liquid cooling plate as described in claim 1, it is characterised in that: the liquid cooling plate includes upper plate and lower plate, the upper plate and
The lower plate is provided with the first slot corresponding with the coolant flow channel and the second slot, be connected by the upper plate with the lower plate with
The coolant flow channel is limited between the upper plate and the lower plate.
8. a kind of battery pack, it is characterised in that: liquid cooling plate including pallet, as described in any one of claims 1 to 7 and
Several power batteries being installed in pallet, the pallet include frame and bottom plate, and the frame is set to the floor peripheral,
The liquid cooling plate is set between the power battery and the bottom plate.
9. a kind of vehicle, it is characterised in that: the vehicle is provided with battery pack as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822182107.9U CN209626374U (en) | 2018-12-25 | 2018-12-25 | Liquid cooling plate, battery pack and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822182107.9U CN209626374U (en) | 2018-12-25 | 2018-12-25 | Liquid cooling plate, battery pack and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209626374U true CN209626374U (en) | 2019-11-12 |
Family
ID=68446767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822182107.9U Active CN209626374U (en) | 2018-12-25 | 2018-12-25 | Liquid cooling plate, battery pack and vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN209626374U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864299A (en) * | 2020-06-23 | 2020-10-30 | 江苏大学 | Balanced heat dissipation liquid cooling system for power battery based on heat-shrinkable material and control method of balanced heat dissipation liquid cooling system |
| CN112331952A (en) * | 2020-10-16 | 2021-02-05 | 华南理工大学 | Battery liquid cooling plate structure |
| CN113067049A (en) * | 2019-12-26 | 2021-07-02 | 奥动新能源汽车科技有限公司 | Automatic temperature control assembly, battery replacement station and energy storage station |
| CN113131032A (en) * | 2019-12-26 | 2021-07-16 | 奥动新能源汽车科技有限公司 | Temperature automatic control system and contain its trade power station, energy storage station |
| CN113363617A (en) * | 2021-06-18 | 2021-09-07 | 中国第一汽车股份有限公司 | Battery liquid cooling plate assembly, power battery assembly and electric vehicle |
| CN114361640A (en) * | 2021-12-14 | 2022-04-15 | 南京航空航天大学 | Adjustable battery pack heat dissipation system and method based on negative thermal expansion material |
| WO2023273983A1 (en) * | 2021-06-30 | 2023-01-05 | 比亚迪股份有限公司 | Box body of power battery, power battery, electric device, and temperature difference self-adjusting cold plate |
-
2018
- 2018-12-25 CN CN201822182107.9U patent/CN209626374U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067049A (en) * | 2019-12-26 | 2021-07-02 | 奥动新能源汽车科技有限公司 | Automatic temperature control assembly, battery replacement station and energy storage station |
| CN113131032A (en) * | 2019-12-26 | 2021-07-16 | 奥动新能源汽车科技有限公司 | Temperature automatic control system and contain its trade power station, energy storage station |
| CN111864299A (en) * | 2020-06-23 | 2020-10-30 | 江苏大学 | Balanced heat dissipation liquid cooling system for power battery based on heat-shrinkable material and control method of balanced heat dissipation liquid cooling system |
| CN112331952A (en) * | 2020-10-16 | 2021-02-05 | 华南理工大学 | Battery liquid cooling plate structure |
| CN112331952B (en) * | 2020-10-16 | 2022-03-29 | 华南理工大学 | Battery liquid cooling plate structure |
| CN113363617A (en) * | 2021-06-18 | 2021-09-07 | 中国第一汽车股份有限公司 | Battery liquid cooling plate assembly, power battery assembly and electric vehicle |
| WO2023273983A1 (en) * | 2021-06-30 | 2023-01-05 | 比亚迪股份有限公司 | Box body of power battery, power battery, electric device, and temperature difference self-adjusting cold plate |
| CN114361640A (en) * | 2021-12-14 | 2022-04-15 | 南京航空航天大学 | Adjustable battery pack heat dissipation system and method based on negative thermal expansion material |
| CN114361640B (en) * | 2021-12-14 | 2023-09-26 | 南京航空航天大学 | Adjustable battery pack heat dissipation system and method based on negative thermal expansion material |
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