CN111864304B - 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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- CN111864304B CN111864304B CN202010799883.2A CN202010799883A CN111864304B CN 111864304 B CN111864304 B CN 111864304B CN 202010799883 A CN202010799883 A CN 202010799883A CN 111864304 B CN111864304 B CN 111864304B
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- 239000012782 phase change material Substances 0.000 title claims abstract description 84
- 239000007788 liquid Substances 0.000 title claims abstract description 74
- 238000001816 cooling Methods 0.000 title claims abstract description 69
- 238000004146 energy storage Methods 0.000 title claims abstract description 13
- 238000009835 boiling Methods 0.000 claims description 17
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 6
- 238000004334 fluoridation Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 238000007654 immersion Methods 0.000 abstract description 9
- 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
- 230000020169 heat generation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940038384 octadecane Drugs 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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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
- H01M10/62—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
- 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
- H01M10/6567—Liquids
-
- 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
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention belongs to the technical field of power batteries, and provides a two-phase immersion battery liquid cooling device utilizing phase change materials for energy storage. Through filling phase change material in the fin for electric automobile is when the short distance is gone, only relies on the phase change material in the fin just can absorb the heat that power battery released, need not to open cooling system, has saved the cooling energy consumption when electric automobile is gone by the short distance. When the electric automobile is in long distance running, the phase change material in the fins can be utilized to absorb heat generated by the power battery, and when the phase change material is completely melted, the cooling system is turned on to cool the battery and the phase change material, so that the cooling energy consumption is minimized in the whole process, and the endurance mileage of the electric automobile in the long distance running process is greatly improved.
Description
Technical Field
The invention belongs to the technical field of power batteries, and particularly relates to a two-phase immersion type battery liquid cooling device utilizing phase change materials for energy storage
Background
The country is the country with the largest number of automobiles at present, and the pollution problem caused by the automobiles brings very serious test to the country, so that the development of new energy automobiles is greatly promoted, and the problem to be solved is urgently needed in the sustainable development of the automobile industry. The power battery is a heart of an automobile, the performance of the electric automobile is influenced in aspects, and in order to enable the power battery to work stably, the temperature of the battery needs to be reasonably controlled, so that a battery thermal management system is important for the power battery.
In the current power battery heat management, there are four heat dissipation modes, namely air cooling, liquid cooling, phase change material cooling and direct cooling of refrigerant. The phase change material is used for cooling, and the advantages of simple structure, low energy consumption and the like are received attention of a plurality of students. However, because the heat conductivity coefficient of the phase change material is low and the mass of the battery box capable of containing the phase change material is limited, the heat cannot be absorbed in time under the condition of high-rate discharge or long-time discharge by singly relying on the phase change material for cooling.
In view of the above-mentioned drawbacks of using the phase-change material alone to cool the battery, the present invention proposes a two-phase submerged battery liquid cooling device using the phase-change material to store energy, and the phase-change material is filled in the fins, so that when the electric vehicle travels in a short distance, the heat released by the power battery can be absorbed only by the phase-change material in the fins, without opening the cooling system, and the cooling energy consumption of the electric vehicle during short distance travel is saved. When the electric automobile is in long distance running, the phase change material in the fins can be utilized to absorb heat generated by the power battery, and when the phase change material is completely melted, the cooling system is turned on to cool the battery and the phase change material, so that the cooling energy consumption is minimized in the whole process, and the endurance mileage of the electric automobile in the long distance running process is greatly improved.
Disclosure of Invention
The invention solves the technical problem of providing a two-phase immersion battery liquid cooling device utilizing phase change materials to store energy, and filling the phase change materials in fins, so that when an electric automobile runs in a short distance, the heat released by a power battery can be absorbed only by the phase change materials in the fins, a cooling system is not required to be opened, and the cooling energy consumption of the electric automobile in the short distance running process is saved.
The technical scheme of the invention is as follows:
a two-phase immersed battery liquid cooling device for storing energy by using a phase change material comprises a battery 1, a box body 2, a box body upper cover plate 3, a cooling coil 4, fins 5, a fluoridized liquid 6 and the phase change material 7;
wherein the upper cover plate 3 of the box body is covered and arranged 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 fins 5 are hollow structures, phase change materials 7 are filled in the hollow structures, the fins 5 are arranged 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 fins 5 are connected through screws, and the box body is sealed in a form of a compression gasket; the battery 1 is fully or partially immersed in the fluorinated liquid 6; when the battery 1 starts to work, the temperature gradually rises, 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 utilizing sensible heat; when the surface temperature of the battery module rises to be higher than the boiling point of the fluorinated liquid 6, the fluorinated liquid 6 starts to boil, steam of the fluorinated liquid 6 generated by boiling is condensed on the surface of the fins 5, and heat released by condensation is absorbed by the phase change material 7 in the fins; along with the continuous progress of battery 1 work, the heat production of battery 1 constantly increases, and the phase change material in fin 5 constantly absorbs the heat and melts gradually, and when this phase change material all melts, opens cooling system, takes away the heat that fluoride liquid 6 steam condensation released and cools down the phase change material with the cooling medium of cooling coil 4 inside.
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 fluoridation liquid 6 under 1 atmosphere pressure is between 20 ℃ and 50 ℃.
The fins 5 are hollow structures.
The lower part of the upper cover plate 3 of the box body is provided with a regular boss structure which is 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 upper cover plate 3 of the box body and the fins 5 is airtight, and the airtight space is used for filling the phase change material 7.
The invention has the beneficial effects that:
1) When the electric automobile runs in a short distance, the heat released by the power battery can be absorbed only by the phase change material in the fins, a cooling system is not required to be opened, and the cooling energy consumption of the electric automobile in the short distance running process is saved.
2) When the electric automobile is in long distance running, the phase change material in the fins can be utilized to absorb heat generated by the power battery, and when the phase change material is completely melted, the cooling system is turned on to cool the battery and the phase change material, so that the cooling energy consumption is minimized in the whole process, and the endurance mileage of the electric automobile in the long distance running process is greatly improved.
Drawings
Fig. 1 is a front view of a two-phase submerged battery liquid cooling apparatus using phase change materials for energy storage.
Fig. 2 is an exploded schematic view of a two-phase submerged battery liquid cooling device using phase change materials for energy storage.
Fig. 3 (a) is a schematic structural view of the case top plate and fin assembly.
Fig. 3 (b) is a schematic structural view of the upper cover plate of the case.
Fig. 3 (c) is a schematic structural view of the fin.
FIG. 3 (d) is a schematic view of the structure of the assembly of the upper cover plate and the fins of the case, taken 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 coil pipes; 5 fins; 6, fluoridation liquid; 7 phase change material.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and technical schemes.
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. It should be understood that the description is only intended to further illustrate the features and advantages of the invention, and not to limit the scope of the claims.
The invention discloses a two-phase immersion battery liquid cooling device utilizing phase change materials to store energy, which comprises: the battery 1, the box body 2, the upper cover plate 3 of the box body, the cooling coil 4, the fins 5, the fluoridized liquid 6 and the 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 hollow structures used for filling the phase change material 7, the box body 2, the box body upper cover plate 3 and the fins 5 are connected through screws, and the hollow structures are sealed in a form of a compression gasket; the battery 1 is fully or partially immersed in the fluorinated liquid 6; when the battery starts to work, the temperature is gradually increased, 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 above 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 fins 5, and heat released by condensation is absorbed by the phase change material 7 inside the fins. With the continuous progress of battery work, the heat production of battery constantly increases, and the inside phase change material of fin constantly absorbs heat and melts gradually, and when this phase change material all melts, opens cooling system, takes away the heat that the fluoridized liquid steam condensation was given off and is cooled down to the phase change material with the cooling medium of cooling coil 4 inside.
Fig. 1 is a front view of a two-phase immersion battery liquid cooling device using a phase change material to store energy, and in this example, 1 group of 6 battery modules are taken as an example, and the two-phase immersion battery liquid cooling device using the phase change material to assist in heat dissipation is described. The battery 1 may be a cylindrical battery, a prismatic battery or a pouch battery, and in this example, a prismatic battery is used. The box body 2, the box body upper cover plate 3 and the fins 5 are connected through screws, and are sealed in a form of a compression gasket. Wherein the tank 2 is provided with a liquid filling pipe (not shown in the drawing) for vacuumizing the closed space formed by the tank 2 and the upper cover plate 3 of the tank and filling the fluoridation liquid.
The fluorinated liquid 6 has a boiling point of 20-50 ℃ under 1 atmosphere, and in the example, HFE-7000 fluorinated liquid produced by a 3M formula is used, wherein the boiling point is 34 ℃, and the fluorinated liquid has good dielectric property and excellent flame retardance. The battery should be wholly or partially immersed in the fluorinated liquid, in this example, the majority of the battery is immersed in the fluorinated liquid.
As shown in fig. 2, which is an explosion schematic diagram of a two-phase immersion battery liquid cooling device using phase change material for energy storage, it can be seen that the two-phase immersion battery liquid cooling device using phase change material for auxiliary heat dissipation is mainly composed of three parts, namely an upper cover plate, fins and a box body. Wherein 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 airtight.
Fig. 3 (a) shows a schematic structural diagram of an assembly of a box upper cover plate and fins, the assembly being composed of two parts, namely the box upper cover plate shown in fig. 3 (b) and the fins shown in fig. 3 (c). From fig. 3 (b), it can be seen that a regular boss structure is provided under the upper cover plate 3 of the case. In addition, a cooling coil is arranged in the cooling coil and is used for absorbing heat released by condensation of the fluoride liquid steam and cooling the phase change material, and in the example, a cooling working medium flowing in the cooling coil is R134a.
As shown in fig. 3 (d), which is a schematic structural diagram of the upper cover plate of the box body and the fin assembly body after being cut along the A-A plane shown in fig. 3 (a), it can be seen that the space formed between the fins and the upper cover plate of the box body is airtight for storing the phase change material 7. The melting point of the phase-change material 7 is between 20 ℃ and 60 ℃, and in the example, the phase-change material is octadecane, and the melting point of the phase-change material is 28.2 ℃. From the sectional view, it can be seen that the regular boss structure below the upper cover plate of the box body contacts with the fins, so that the contact area between the upper cover plate 3 of the box body and the fins 5 and the phase change material 7 is increased.
When the electric automobile runs in a short distance, the temperature of the battery is continuously increased along with the progress of the operation, and heat generated by the battery is taken away by the filled fluoride liquid. In the initial stage of heat dissipation, the fluoride liquid utilizes the sensible heat of the fluoride liquid to absorb the heat generated by the battery. As the operation of the battery continues, the heat generated by the battery is increased, when the surface temperature of the battery is increased to the boiling point of the fluorinated liquid, the fluorinated liquid starts to boil, the vapor of the fluorinated liquid generated by boiling is condensed on the surface of the fins 5, and the heat released by the condensation is absorbed by the phase change material 7 inside the fins. In the short distance driving process, part of the phase change material is melted due to the heat released when the fluoride liquid vapor is absorbed, and when the vehicle stops running, the melted phase change material 7 is gradually solidified to an initial state, and the whole process does not need to open an active cooling system.
When the electric automobile runs for a long distance, the temperature of the battery is continuously increased along with the operation, and heat generated by the battery is taken away by the filled fluoride liquid. In the initial stage of heat dissipation, the fluoride liquid utilizes the sensible heat of the fluoride liquid to absorb the heat generated by the battery. As the operation of the battery continues, the heat generated by the battery is increased, when the surface temperature of the battery is increased to the boiling point of the fluorinated liquid, the fluorinated liquid starts to boil, the vapor of the fluorinated liquid generated by boiling is condensed on the surface of the fins 5, and the heat released by the condensation is absorbed by the phase change material 7 inside the fins. Under the long-distance running state, along with the continuous operation of the battery, the heat generation of the battery is continuously increased, and the phase change material in the fin continuously absorbs the heat to be gradually melted. When the phase-change material is completely melted, a cooling system is started, the cooling working medium flowing in the cooling coil 4 is utilized to take away the heat released by the condensation of the fluoridized liquid steam and cool the phase-change material, so that the electric automobile can still effectively perform heat management on the battery in a long-distance running state.
In summary, the invention discloses a two-phase immersion battery liquid cooling device for storing energy by using a phase change material. 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 is not required to be opened, and the cooling energy consumption of the electric automobile in the short distance running is saved.
The foregoing specific examples have been provided to illustrate the technical solutions and advantages of the present disclosure in detail, and it should be understood that the foregoing description is only exemplary of the present disclosure and is not intended to limit the present disclosure. The dimensions and shapes of the elements in the drawings do not reflect actual dimensions and proportions, but merely represent the contents of the present example. Any modifications, improvements, and equivalents that fall within the spirit and scope of the present disclosure.
Claims (7)
1. The two-phase immersed battery liquid cooling device for storing energy by using the phase change material is characterized by comprising a battery (1), a box body (2), a box body upper cover plate (3), a cooling coil (4), fins (5), a fluorinated solution (6) and a phase change material (7);
wherein the upper cover plate (3) of the box body is covered and arranged above the battery (1), and the battery (1) is positioned at the bottom of the box body (2); the cooling coil (4) is arranged in the upper cover plate (3) of the box body and is connected with an external cooling system; the fins (5) are hollow structures, phase change materials (7) are filled in the hollow structures, the fins (5) are arranged 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 fins (5) are connected through screws, and the fins are sealed in a form of a compression gasket; the battery (1) is fully or partially immersed in the fluoridation liquid (6); when the battery (1) starts to work, the temperature gradually rises, heat generated by the battery (1) is taken away by the filled fluoride liquid (6), and when the fluoride liquid (6) does not reach the boiling point, the fluoride liquid (6) absorbs the heat generated by the battery module by utilizing sensible heat; when the surface temperature of the battery module is increased to be higher than the boiling point of the fluorinated liquid (6), the fluorinated liquid (6) starts to boil, steam of the fluorinated liquid (6) generated by boiling is condensed on the surface of the fins (5), and heat released by condensation is absorbed by the phase change material (7) in the fins; along with the continuous progress of battery (1) work, the heat production of battery (1) constantly increases, and the inside phase change material of fin (5) constantly absorbs heat and melts gradually, and when this phase change material all melts, opens cooling system, takes away the heat that the steam condensation of fluoridized liquid (6) released and cools down the phase change material with the cooling medium of cooling coil (4) inside.
2. The two-phase submerged battery liquid cooling device utilizing phase change materials for energy storage according to claim 1, wherein the battery (1) is a square battery, a cylindrical battery or a soft package battery.
3. The two-phase submerged battery liquid cooling device for energy storage by using phase change materials according to claim 1 or 2, wherein the melting point of the phase change material (7) is between 20 ℃ and 60 ℃.
4. The two-phase submerged battery liquid cooling device for energy storage by using phase change materials according to claim 1 or 2, wherein the boiling point of the fluoridation liquid (6) is between 20 ℃ and 50 ℃ under the pressure of 1 atmosphere.
5. The two-phase submerged battery liquid cooling device utilizing phase change materials for energy storage according to claim 4, wherein the fins (5) are hollow structures.
6. The two-phase submerged battery liquid cooling device using phase change materials 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 case body, and is used for increasing the contact area between the upper cover plate (3) of the case body and the fins (5) and the phase change materials (7).
7. The two-phase submerged battery liquid cooling apparatus using phase change material for energy storage according to claim 6, wherein the space formed between the upper cover plate (3) of the case and the fins (5) is closed, and the closed space is used for filling the phase change material (7).
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| CN202010799883.2A CN111864304B (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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| CN202010799883.2A CN111864304B (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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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112349997A (en) * | 2020-11-17 | 2021-02-09 | 河南电池研究院有限公司 | Immersion type liquid cooling battery module with heat pipe for heat transfer |
| CN114678624B (en) * | 2022-03-14 | 2022-09-09 | 大连理工大学 | Two-phase immersed battery liquid cooling device for super quick charging of lithium battery and cooling system thereof |
| CN115160578B (en) * | 2022-06-24 | 2023-09-29 | 纯钧新材料(深圳)有限公司 | Solid-solid phase change material for data center, preparation method and cooling liquid thereof |
| CN116960805B (en) * | 2023-09-15 | 2023-12-08 | 大合全(常州)电气有限公司 | Multi-layer electric cabinet with composite cooling system |
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| WO2018036296A1 (en) * | 2016-08-24 | 2018-03-01 | 上海蔚来汽车有限公司 | Phase change cooling system for power battery of electric vehicle |
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