CN212230580U - Two-phase immersed battery liquid cooling device utilizing phase-change material for energy storage - Google Patents
Two-phase immersed battery liquid cooling device utilizing phase-change material for energy storage Download PDFInfo
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- CN212230580U CN212230580U CN202021654173.2U CN202021654173U CN212230580U CN 212230580 U CN212230580 U CN 212230580U CN 202021654173 U CN202021654173 U CN 202021654173U CN 212230580 U CN212230580 U CN 212230580U
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- 239000012782 phase change material Substances 0.000 title claims abstract description 85
- 238000001816 cooling Methods 0.000 title claims abstract description 71
- 239000007788 liquid Substances 0.000 title claims abstract description 70
- 238000004146 energy storage Methods 0.000 title claims abstract description 15
- 238000009835 boiling Methods 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- RZJRJXONCZWCBN-UHFFFAOYSA-N octadecane Chemical compound CCCCCCCCCCCCCCCCCC RZJRJXONCZWCBN-UHFFFAOYSA-N 0.000 description 2
- NOPJRYAFUXTDLX-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-methoxypropane Chemical compound COC(F)(F)C(F)(F)C(F)(F)F NOPJRYAFUXTDLX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229940038384 octadecane Drugs 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model belongs to the technical field of power battery, a utilize double-phase submergence formula battery liquid cooling plant of phase change material energy storage is proposed. Through filling phase change material in the fin for electric automobile just can absorb the heat that power battery emitted when traveling in the short distance by the inside phase change material of fin, need not to open cooling system, has saved the cooling energy consumption when electric automobile short distance traveled. When the electric automobile is in long-distance driving, the phase-change material in the fins can be used for absorbing heat generated by the power battery, and when the phase-change material is completely melted, the cooling system is opened to cool the battery and the phase-change material, so that the minimum cooling energy consumption is realized in the whole process, and the cruising mileage of the electric automobile in the long-distance driving process is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of power battery, concretely relates to utilize double-phase submergence formula battery liquid cooling plant of phase change material energy storage
Background
China is the country with the largest number of automobiles in use at present, and the pollution problem caused by the automobiles brings a very serious test to China, so that the development of new energy automobiles is increased, and the problem to be solved urgently is the sustainable development of the automobile industry. The power battery is the heart of the automobile, the performance of the electric automobile is influenced in all aspects, and in order to enable the power battery to work stably, the temperature of the battery needs to be reasonably controlled, so that the battery thermal management system is very important for the power battery.
In the current thermal management of power batteries, there are four main heat dissipation methods, namely air cooling, liquid cooling, phase change material cooling, and direct refrigerant cooling. The cooling by utilizing the phase-change material has received attention of a plurality of scholars due to the advantages of simple structure, low energy consumption and the like. However, due to the low thermal conductivity of the phase change material and the limited mass of the phase change material that can be accommodated in the battery case, the heat cannot be absorbed in time under the condition of high-rate discharge or long-time discharge by singly depending on the cooling of the phase change material.
In view of above-mentioned single phase change material that utilizes cools off there are all kinds of drawbacks to the battery, the utility model provides an utilize double-phase submergence formula battery liquid cooling plant of phase change material energy storage utilizes at the inside phase change material that packs of fin for electric automobile only relies on the inside phase change material of fin just can absorb the heat that power battery emitted when the short distance is gone, need not to open cooling system, has saved the cooling energy consumption when electric automobile short distance is gone. When the electric automobile is in long-distance driving, the phase-change material in the fins can be used for absorbing heat generated by the power battery, and when the phase-change material is completely melted, the cooling system is opened to cool the battery and the phase-change material, so that the minimum cooling energy consumption is realized in the whole process, and the cruising mileage of the electric automobile in the long-distance driving process is greatly improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem lie in providing an utilize double-phase submergence formula battery liquid cooling device of phase change material energy storage, utilize at the inside phase change material that packs of fin for electric automobile only relies on the inside phase change material of fin just can absorb the heat that power battery emitted when traveling in the short distance, need not to open cooling system, has saved the cooling energy consumption when electric automobile short distance travels.
The technical scheme of the utility model:
a two-phase immersed battery liquid cooling device utilizing phase-change materials to store energy comprises a battery 1, a box body 2, a box body upper cover plate 3, a cooling coil 4, fins 5, a fluorinated liquid 6 and phase-change materials 7;
wherein, the upper cover plate 3 of the box body is covered above the battery 1, and the battery 1 is positioned at the bottom of the box body 2; the cooling coil 4 is arranged inside the upper cover plate 3 of the box body and is connected with an external cooling system; the fin 5 is a hollow structure, the phase-change material 7 is filled in the hollow structure, the fin 5 is installed on the inner surface of the upper cover plate 3 of the box body, the box body 2, the upper cover plate 3 of the box body and the fin 5 are connected through screws, and sealing is performed in a compression gasket mode; the battery 1 is totally or partially immersed in the fluorinated liquid 6; when the battery 1 starts to work, the temperature gradually rises, the heat generated by the battery 1 is taken away by the filled fluorinated liquid 6, and when the fluorinated liquid 6 does not reach the boiling point, the fluorinated liquid 6 absorbs the heat generated by the battery module by using sensible heat; when the surface temperature of the battery module rises above the boiling point of the fluorinated liquid 6, the fluorinated liquid 6 starts to boil, vapor of the fluorinated liquid 6 generated by boiling is condensed on the surface of the fin 5, and the heat released by condensation is absorbed by the phase-change material 7 in the fin; along with the continuation of 1 work of battery, battery 1's heat production constantly increases, and the phase change material inside fin 5 constantly absorbs the heat and melts gradually, and when this phase change material totally melts, opens cooling system, utilizes the inside cooling working medium of cooling coil 4 to take away the heat that 6 steam condensation of fluoridizing liquid emitted and cool down phase change material.
The battery 1 is a square battery, a cylindrical battery or a soft package battery.
The melting point of the phase-change material 7 is between 20 and 60 ℃.
The boiling point of the fluorinated liquid 6 under 1 atmospheric pressure is between 20 and 50 ℃.
The fins 5 are hollow structures.
And a regular boss structure is arranged below the upper cover plate 3 of the box body and used for increasing the contact area of the upper cover plate 3 of the box body, the fins 5 and the phase-change material 7.
The space formed between the box upper cover plate 3 and the fins 5 is closed, and the closed space is filled with the phase-change material 7.
The utility model discloses a beneficial achievement:
1) when the electric automobile runs in a short distance, the heat emitted by the power battery can be absorbed only by the phase change material in the fins, a cooling system does not need to be opened, and the cooling energy consumption of the electric automobile during short-distance running is saved.
2) When the electric automobile is in long-distance driving, the phase-change material in the fins can be used for absorbing heat generated by the power battery, and when the phase-change material is completely melted, the cooling system is opened to cool the battery and the phase-change material, so that the minimum cooling energy consumption is realized in the whole process, and the cruising mileage of the electric automobile in the long-distance driving process is greatly improved.
Drawings
Fig. 1 is a front view of a two-phase immersed battery liquid cooling device using phase change material for energy storage.
Fig. 2 is an exploded view of a two-phase immersed battery liquid cooling device using phase change material for energy storage.
Fig. 3(a) is a schematic structural view of the upper cover plate of the box body and the fin assembly.
Fig. 3(b) is a schematic structural diagram of the upper cover plate of the box body.
Fig. 3(c) is a schematic structural view of the fin.
Fig. 3(d) is a schematic structural view of the upper cover plate of the box body and the fin assembly cut along the plane a-a shown in fig. 3 (a).
In the figure: 1, a battery; 2, a box body; 3, an upper cover plate of the box body; 4, cooling the coil pipe; 5, fins; 6, a fluoridizing solution; 7 phase change material.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. It is to be understood that such descriptions are merely illustrative of the features and advantages of the present invention and are not intended to limit the scope of the present invention as claimed.
The utility model discloses an utilize double-phase submergence formula battery liquid cooling plant of phase change material energy storage, include: the device comprises a battery 1, a box body 2, a box body upper cover plate 3, a cooling coil 4, fins 5, a fluorinated liquid 6 and a phase-change material 7; wherein the battery 1 is positioned at the bottom of the box body 2; the cooling coil 4 is arranged inside the upper cover plate 3 of the box body and is connected with an external cooling system; the fins 5 are of hollow structures, the hollow structures are used for filling phase-change materials 7, the box body 2, the box body upper cover plate 3 and the fins 5 are connected through screws, and sealing is carried out in a compression gasket mode; the battery 1 is totally or partially immersed in the fluorinated liquid 6; when the battery starts to work, the temperature is gradually increased, the heat generated by the battery is taken away by the filled fluorinated liquid, and when the fluorinated liquid does not reach the boiling point, the fluorinated liquid absorbs the heat generated by the battery module by utilizing sensible heat; when the surface temperature of the battery module rises to be higher than the boiling point of the fluorinated liquid, the fluorinated liquid starts to boil, the fluorinated liquid steam generated by boiling is condensed on the surface of the fin 5, and the heat released by condensation is absorbed by the phase-change material 7 in the fin. Along with the continuation of battery work, the heat production of battery constantly increases, and the inside phase change material of fin constantly absorbs the heat and melts gradually, when this phase change material is whole to melt, opens cooling system, utilizes the inside cooling working medium of cooling coil 4 to take away the heat that fluoride liquid steam condensation emitted and cool down phase change material.
Fig. 1 is a front view of a two-phase immersed battery cooling device using a phase-change material for energy storage, and in this example, 1 set of 6 battery modules is taken as an example to describe the two-phase immersed battery cooling device using the phase-change material for auxiliary heat dissipation. The battery 1 may be a cylindrical battery, a prismatic battery or a pouch battery, and a prismatic battery is used in this example. The box body 2, the box body upper cover plate 3 and the fins 5 are connected through screws and sealed in a pressing gasket mode. Wherein the box body 2 is provided with a liquid filling pipe (not shown in the figure) for vacuumizing the closed space formed by the box body 2 and the box body upper cover plate 3 and filling the fluorinated liquid.
The fluorination liquid 6 has a boiling point of 20 to 50 ℃ under 1 atmosphere, and in the example, HFE-7000 produced by the formula 3M is used, and has a boiling point of 34 ℃, good dielectric properties and excellent flame retardancy. The cell should be wholly or partially immersed in the fluorinated liquid, in this example, the cell is largely immersed in the fluorinated liquid.
As shown in fig. 2, which is an explosion diagram of a two-phase immersed battery liquid cooling device using phase change material for energy storage, it can be seen that the two-phase immersed battery liquid cooling device using phase change material for auxiliary heat dissipation is mainly composed of three parts, namely, a box upper cover plate, fins and a box. The space formed by the fins and the box body and the space formed by the upper cover plate of the box body and the fins are closed.
Fig. 3(a) shows a schematic structural diagram of a box upper cover plate and fin assembly, which is composed of two parts, namely a box upper cover plate shown in fig. 3(b) and a fin shown in fig. 3 (c). The regular boss structure below the upper cover plate 3 of the box body can be seen from fig. 3 (b). In addition, a cooling coil is arranged inside the phase change material for absorbing heat released by the condensation of the fluorinated liquid vapor and cooling the phase change material, and in the present example, the cooling working medium circulating inside the cooling coil is R134 a.
As shown in fig. 3(d), which is a schematic structural view of the upper cover plate of the box body and the fin assembly body after being cut along the plane a-a shown in fig. 3(a), it can be seen that the space formed between the fin and the upper cover plate of the box body is closed for storing the phase-change material 7. The melting point of the phase-change material 7 is between 20 ℃ and 60 ℃, in this example, the selected phase-change material is octadecane, and the melting point is 28.2 ℃. It can be seen from the cross-sectional view that the regular boss structure below the upper cover plate of the box body is in contact with the fins, thus increasing the contact area between the upper cover plate 3 of the box body and the fins 5 and the phase change material 7.
When the electric automobile runs in a short distance, the temperature of the battery is continuously increased along with the operation, and the heat generated by the battery is taken away by the filled fluorinated liquid. In the initial stage of heat dissipation, the fluorinated liquid absorbs the heat generated by the battery by using the sensible heat of the fluorinated liquid. As the battery work continues, the heat generated by the battery continuously increases, when the temperature of the surface of the battery rises to the boiling point of the fluorinated liquid, the fluorinated liquid starts to boil, the fluorinated liquid steam generated by boiling is condensed on the surface of the fin 5, and the heat released by condensation is absorbed by the phase-change material 7 in the fin. In the short-distance running process, part of the phase-change material is melted due to the fact that the phase-change material absorbs heat emitted when the fluorinated liquid steam is condensed, when the vehicle stops running, the melted phase-change material 7 is gradually solidified to be in an initial state, and the active cooling system does not need to be opened in the whole process.
When the electric automobile runs for a long distance, the temperature of the battery is continuously increased along with the operation, and the heat generated by the battery is taken away by the filled fluorinated liquid. In the initial stage of heat dissipation, the fluorinated liquid absorbs the heat generated by the battery by using the sensible heat of the fluorinated liquid. As the battery work continues, the heat generated by the battery continuously increases, when the temperature of the surface of the battery rises to the boiling point of the fluorinated liquid, the fluorinated liquid starts to boil, the fluorinated liquid steam generated by boiling is condensed on the surface of the fin 5, and the heat released by condensation is absorbed by the phase-change material 7 in the fin. Under the long-distance driving state, along with the continuation of battery work, the heat production of battery is constantly increased, and the phase change material of fin inside constantly absorbs the heat and melts gradually. When the phase-change material is completely melted, the cooling system is started, the heat released by the condensation of the fluorinated liquid steam is taken away by the cooling working medium circulating in the cooling coil 4, and the phase-change material is cooled, so that the electric automobile can still perform effective heat management on the battery in a long-distance driving state.
To sum up, the utility model discloses an utilize double-phase submergence formula battery liquid cooling plant of phase change material energy storage. The phase-change material is filled in the fins, so that when the electric automobile runs in a short distance, the heat emitted by the power battery can be absorbed only by the phase-change material in the fins, a cooling system does not need to be opened, and the cooling energy consumption of the electric automobile during short-distance running is saved.
The technical solutions and advantages of the present disclosure have been described in detail with reference to the specific examples, and it should be understood that the above description is only exemplary of the present disclosure, and is not intended to limit the present disclosure. The sizes and shapes of the various elements in the drawings are not to be considered as reflecting actual sizes and proportions, but are merely representative of the contents of the present example. Any modification, improvement or equivalent replacement made on the principle and spirit of the present disclosure is within the protection scope of the present disclosure.
Claims (7)
1. A two-phase immersed battery liquid cooling device utilizing phase-change material to store energy is characterized by comprising a battery (1), a box body (2), a box body upper cover plate (3), a cooling coil (4), fins (5), fluorinated liquid (6) and phase-change material (7);
wherein the upper cover plate (3) of the box body is covered above the battery (1), and the battery (1) is positioned at the bottom of the box body (2); the cooling coil (4) is arranged inside the upper cover plate (3) of the box body and is connected with an external cooling system; the fin (5) is of a hollow structure, a phase-change material (7) is filled in the hollow structure, the fin (5) is installed on the inner surface of the upper cover plate (3) of the box body, the box body (2), the upper cover plate (3) of the box body and the fin (5) are connected through screws, and sealing is carried out in a compression gasket mode; the battery (1) is totally or partially immersed in the fluorinated liquid (6); when the battery (1) starts to work, the temperature is gradually increased, the heat generated by the battery (1) is taken away by the filled fluorinated liquid (6), and when the fluorinated liquid (6) does not reach the boiling point, the fluorinated liquid (6) absorbs the heat generated by the battery module by using sensible heat; when the surface temperature of the battery module rises above the boiling point of the fluorinated liquid (6), the fluorinated liquid (6) starts to boil, vapor of the fluorinated liquid (6) generated by boiling is condensed on the surface of the fin (5), and heat released by condensation is absorbed by the phase-change material (7) in the fin; along with the continuation of battery (1) work, the heat production of battery (1) constantly increases, and the phase change material of fin (5) inside constantly absorbs the heat and melts gradually, when this phase change material is whole to melt, opens cooling system, utilizes the inside cooling working medium of cooling coil (4) to take away the heat that fluoride liquid (6) steam condensation was given off and to cool down phase change material.
2. The liquid cooling device of the two-phase immersed battery for storing energy by utilizing the phase-change material as claimed in claim 1, wherein the battery (1) is a prismatic battery, a cylindrical battery or a pouch battery.
3. The liquid cooling device of the two-phase immersed battery for storing energy by using the phase-change material as claimed in claim 1 or 2, wherein the melting point of the phase-change material (7) is between 20 ℃ and 60 ℃.
4. The liquid cooling device of the two-phase immersed battery for storing energy by utilizing the phase-change material as claimed in claim 1 or 2, wherein the boiling point of the fluorinated liquid (6) at 1 atmosphere is between 20 ℃ and 50 ℃.
5. The two-phase immersed battery liquid cooling device utilizing phase change material for energy storage according to claim 4, wherein the fin (5) is of a hollow structure.
6. The two-phase immersed battery liquid cooling device utilizing the phase change material for energy storage according to claim 1, 2 or 5, wherein a regular boss structure is arranged below the upper cover plate (3) of the box body, and is used for increasing the contact area of the upper cover plate (3) of the box body, the fin (5) and the phase change material (7).
7. The two-phase immersed battery liquid cooling device utilizing the phase change material for energy storage is characterized in that the space formed between the upper cover plate (3) of the box body and the fin (5) is closed, and the closed space is filled with the phase change material (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021654173.2U CN212230580U (en) | 2020-08-11 | 2020-08-11 | Two-phase immersed battery liquid cooling device utilizing phase-change material for energy storage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021654173.2U CN212230580U (en) | 2020-08-11 | 2020-08-11 | Two-phase immersed battery liquid cooling device utilizing phase-change material for energy storage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864304A (en) * | 2020-08-11 | 2020-10-30 | 大连理工大学 | Two-phase immersed battery liquid cooling device utilizing phase-change material for energy storage |
| CN114243165A (en) * | 2021-12-14 | 2022-03-25 | 重庆大学 | Lithium ion battery thermal management system |
| DE102021124388A1 (en) | 2021-09-21 | 2023-03-23 | Volkswagen Aktiengesellschaft | battery cell |
| CN117270595A (en) * | 2023-11-23 | 2023-12-22 | 珠海科创储能科技有限公司 | Temperature control device for energy storage system |
-
2020
- 2020-08-11 CN CN202021654173.2U patent/CN212230580U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864304A (en) * | 2020-08-11 | 2020-10-30 | 大连理工大学 | Two-phase immersed battery liquid cooling device utilizing phase-change material for energy storage |
| CN111864304B (en) * | 2020-08-11 | 2024-04-16 | 大连理工大学 | Two-phase immersed battery liquid cooling device utilizing phase change material for energy storage |
| DE102021124388A1 (en) | 2021-09-21 | 2023-03-23 | Volkswagen Aktiengesellschaft | battery cell |
| CN114243165A (en) * | 2021-12-14 | 2022-03-25 | 重庆大学 | Lithium ion battery thermal management system |
| CN114243165B (en) * | 2021-12-14 | 2023-10-31 | 重庆大学 | Lithium ion battery thermal management system |
| CN117270595A (en) * | 2023-11-23 | 2023-12-22 | 珠海科创储能科技有限公司 | Temperature control device for energy storage system |
| CN117270595B (en) * | 2023-11-23 | 2024-02-20 | 珠海科创储能科技有限公司 | Temperature control device for energy storage system |
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