CN212230581U - Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device - Google Patents
Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device Download PDFInfo
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- CN212230581U CN212230581U CN202021681479.7U CN202021681479U CN212230581U CN 212230581 U CN212230581 U CN 212230581U CN 202021681479 U CN202021681479 U CN 202021681479U CN 212230581 U CN212230581 U CN 212230581U
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- 239000007788 liquid Substances 0.000 title claims abstract description 94
- 238000001816 cooling Methods 0.000 title claims abstract description 62
- 238000009833 condensation Methods 0.000 claims abstract description 15
- 230000005494 condensation Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000012071 phase Substances 0.000 claims description 36
- 239000007791 liquid phase Substances 0.000 claims description 20
- 238000009835 boiling Methods 0.000 claims description 15
- 239000003507 refrigerant Substances 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 230000035485 pulse pressure Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 7
- 230000020169 heat generation Effects 0.000 abstract description 4
- 239000000178 monomer Substances 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- 238000003682 fluorination reaction Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007789 sealing Methods 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
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007654 immersion 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
- 239000012782 phase change material Substances 0.000 description 1
- 238000010992 reflux Methods 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
-
- 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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- Battery Mounting, Suspending (AREA)
Abstract
The utility model belongs to the technical field of power battery, a double-phase submergence formula battery liquid cooling system of constant voltage equipment of multimode group sharing is provided. The heat generated by the battery in the working process is taken away by utilizing the vaporization of the fluorinated liquid on the surface of the battery, the vaporized fluorinated liquid is condensed on the surface of the upper cover plate of the box body and in the gas storage chamber, and the heat released by condensation is absorbed by the cooling working medium in the cooling coil pipe, so that the highest temperature of the battery and the temperature difference between different battery monomers are effectively controlled. Compared with the traditional two-phase immersed battery liquid cooling device, the device has the following advantages: the pulse pressure in the box body is buffered by utilizing the position movement of the piston in the air storage chamber, so that the box body does not need to bear the pressure load of pulses, and the stability of the system is improved; the condensation rate of the fluoridized liquid vapor can change along with the change of the heat generation rate of the battery, so that the temperature and the pressure in the battery box can be controlled to be basically stable.
Description
Technical Field
The utility model belongs to the technical field of power battery, specifically belong to a constant voltage equipment's of multimode group double-phase submergence formula battery liquid cooling system
Background
The new energy automobile has great advantages in the aspects of environmental protection and energy utilization, and is more concerned by a plurality of enterprises as a power battery of the heart of the new energy automobile. Lithium batteries are widely used in electric vehicles due to their advantages of high energy density, long cycle life, etc. The temperature is a main factor influencing the electricity storage and safety of the lithium battery, and the performance of the battery is rapidly degraded when the lithium battery works at an overhigh temperature, even thermal runaway is caused. Therefore, designing an efficient battery thermal management system is a necessary condition for improving the overall performance of the electric automobile.
The current battery thermal management modes mainly comprise: air-cooled, liquid-cooled, phase change material cooling, direct refrigerant cooling, and two-phase immersed battery liquid cooling, which are currently of interest to many scholars. For example, in the patent of "sealed immersed battery pack based on fluorinated liquid and cooling system thereof" (patent No. 201822187949.3), people in Taoist et al propose to immerse the whole battery module in fluorinated liquid, which directly contacts with the surface of the battery, has strong heat extraction capability and no contact thermal resistance. The phase change of the fluorinated liquid is fully utilized in the whole heat dissipation process, the heat dissipation efficiency is high, and the energy consumption is low.
Two-phase immersion liquid cooling, while having many advantages, requires the battery case to be hermetically sealed. Because the battery has pulse pressure in the box in the course of working, so the battery box can shorten life because of bearing pulse stress load for a long time. In view of the problem that above-mentioned double-phase submergence formula liquid cooling exists, the utility model provides a double-phase submergence formula battery liquid cooling system of constant voltage equipment of multimode group sharing utilizes the position of the inside piston of gas receiver to remove the pulse pressure in the buffer tank for the box need not to bear the pressure load of alternation, has improved the stability of system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem lie in providing a constant voltage equipment's of multimode group double-phase submergence formula battery liquid cooling system. The position of the piston in the air storage chamber is moved to buffer the pulse pressure in the box body, so that the box body does not need to bear alternating pressure load, and the stability of the system is improved.
The technical scheme of the utility model:
the utility model provides a multimode group shares two-phase submergence formula battery liquid cooling system of a constant voltage device which characterized in that, this two-phase submergence formula battery liquid cooling system who communicates each other and have pressure buffer includes: the battery pack comprises a battery pack module, a constant voltage module and a cooling module;
wherein, the battery pack module includes: the device comprises a battery 1, a box body 2, a fluorinated liquid 3, a liquid phase communicating pipe 4, a gas phase communicating pipe 5 and a box body upper cover plate 6; wherein the battery 1 is positioned at the bottom of the box body 2; the liquid phase communicating pipe 4 is connected to the lower positions of the two sides of the box body 2, the gas phase communicating pipe 5 is connected to the upper positions of the two sides of the box body 2, and the liquid phase communicating pipe and the gas phase communicating pipe are respectively used for balancing the liquid level of the fluorinated liquid 3 and the vapor pressure of the fluorinated liquid in different battery modules; when the battery is in operation, the battery begins to generate heat. In the initial stage of heat dissipation, the fluorinated liquid does not reach the boiling point, and the fluorinated liquid absorbs the heat generated by the battery in the working process by using sensible heat. As the operation of the battery continues, when the fluorinated liquid reaches the boiling point, the fluorinated liquid starts to boil, and latent heat is used for absorbing heat emitted by the battery. The fluorinated liquid steam generated by boiling is condensed on the surface of the upper cover plate 6 of the box body, and the heat released by condensation is taken away by the cooling working medium in the cooling coil 7.
The constant voltage module includes: an air reservoir 8, a piston 9, and a spring 10; the air storage chamber is connected with the box body through a liquid phase communicating pipe 4 and an air communicating pipe 5. The piston 9 is located in the air storage chamber and is connected with the air storage chamber through a spring 10. The cooling module includes: a cooling coil 7, a compressor 11, a condenser 12 and a throttle valve 13 for circulating a refrigerant; the cooling coil 7, the compressor 11, the condenser 12 and the throttle valve 13 are connected in sequence in a ring through pipelines. The gas storage chamber 8 is connected with the box body through the liquid phase communicating pipe 4 and the gas phase communicating pipe 5, and the space formed between the gas storage chamber and the box body is closed.
And a cooling pipeline is arranged at the upper end of the air storage chamber 8 and is connected with the cooling module.
The height of the lower edge of the air storage chamber 8 is higher than or equal to the height of the liquid level of the fluorinated liquid in the box body.
The piston 9 can move left and right in the air storage chamber 8, and in the initial state that the battery does not work, the piston 9 is positioned at the leftmost end of the air storage chamber 8.
The stiffness coefficient of the spring 10 is small, and the pulse pressure in the box body can be sensitively buffered.
The utility model has the advantages that:
1) the pulse pressure in the box body is buffered by utilizing the position movement of the piston in the air storage chamber, so that the box body does not need to bear alternating pressure load, and the stability of the system is improved;
2) the condensation rate of the fluoridized liquid vapor can change along with the change of the heat generation rate of the battery, so that the temperature and the pressure in the battery box can be controlled to be basically stable.
Drawings
Fig. 1 is a schematic diagram of a liquid cooling system of a two-phase immersed battery with multiple modules sharing a constant voltage device.
In the figure: 1, a battery; 2, a box body; 3, a fluoridizing solution; 4 liquid phase communicating pipe; 5 gas phase communicating pipe; 6, an upper cover plate of the box body; 7 cooling the coil pipe; 8, an air storage chamber; 9 a piston; 10 springs; 11 a compressor; 12 a condenser; and 13 a throttle valve.
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 a multimode group shares a constant voltage device's double-phase submergence formula battery liquid cooling system, this double-phase submergence formula battery liquid cooling system that communicates each other and have pressure buffer includes: the battery pack comprises a battery pack module, a constant voltage module and a cooling module;
wherein, the battery pack module includes: the device comprises a battery 1, a box body 2, a fluorinated liquid 3, a liquid phase communicating pipe 4, a gas phase communicating pipe 5 and a box body upper cover plate 6; wherein the battery 1 is positioned at the bottom of the box body 2; the liquid phase communicating pipe 4 is connected to the lower positions of the two sides of the box body 2, the gas phase communicating pipe 5 is connected to the upper positions of the two sides of the box body 2, and the liquid phase communicating pipe and the gas phase communicating pipe are respectively used for balancing the liquid level of the fluorinated liquid 3 and the vapor pressure of the fluorinated liquid in different battery modules; when the battery is in operation, the battery begins to generate heat. In the initial stage of heat dissipation, the fluorinated liquid does not reach the boiling point, and the fluorinated liquid absorbs the heat generated by the battery in the working process by using sensible heat. As the operation of the battery continues, when the fluorinated liquid reaches the boiling point, the fluorinated liquid starts to boil, and latent heat is used for absorbing heat emitted by the battery. The fluorinated liquid steam generated by boiling is condensed on the surface of the upper cover plate 6 of the box body, and the heat released by condensation is taken away by the cooling working medium in the cooling coil 7.
The constant voltage module includes: an air reservoir 8, a piston 9, and a spring 10; the air storage chamber is connected with the box body through a liquid phase communicating pipe 4 and an air communicating pipe 5. The piston 9 is located in the air storage chamber and is connected with the air storage chamber through a spring 10. The cooling module includes: a cooling coil 7, a compressor 11, a condenser 12 and a throttle valve 13 for circulating a refrigerant; the cooling coil 7, the compressor 11, the condenser 12 and the throttle valve 13 are connected in sequence in a ring through pipelines. The gas storage chamber 8 is connected with the box body through the liquid phase communicating pipe 4 and the gas phase communicating pipe 5, and the space formed between the gas storage chamber and the box body is closed.
Fig. 1 is a schematic diagram of a liquid cooling system of a two-phase immersed battery with multiple modules sharing a constant voltage device, and in this example, 1 group of 6 square battery packs is taken as an example to explain the whole system. The battery 1 is arranged at the bottom of the box body 2 and is partially or completely immersed in the fluorinated liquid 3, and in the example, the battery is mostly immersed in the fluorinated liquid 3.
The fluorinated liquid 3 is an insulating flame-retardant liquid and has a boiling point of 0-50 ℃ under 1 atmosphere, and in the example, HFE-7000 fluorinated liquid produced by a 3M formula is used, and has a boiling point of 34 ℃, so that the fluorinated liquid has good dielectric properties and excellent flame retardance.
The upper end of the air storage chamber 8 is provided with a cooling pipeline which is connected with the cooling module, so that heat released by condensation of the fluorinated liquid steam in the air storage chamber can be timely transferred to the outside. The height of the lower edge of the air storage chamber 8 is higher than or equal to the height of the liquid level of the fluorinated liquid in the box body, in the example, the height of the lower edge of the air storage chamber 8 is equal to the liquid level of the fluorinated liquid in the box body, and the condensed fluorinated liquid 3 can smoothly flow back into the box body. The spring 8 used in this example has a small coefficient of stiffness, and therefore can sensitively buffer the pulse pressure in the tank. In the initial state of the battery not working, the piston 9 is located at the leftmost end of the air storage chamber 8, and when the battery is in the working state, the piston 9 can move a corresponding distance according to the pressure of the steam inside the box body.
In the example, 3 battery modules are shown, and it can be seen that the liquid phase communicating pipes 4 connect the battery modules in series, the fluorinated liquid can circulate in the liquid phase communicating pipes, and the liquid level heights of the fluorinated liquid in the battery boxes are kept consistent by using the communicating vessel principle. In this example, the liquid phase communicating pipe 4 is a PVC transparent wire hose, and is connected to the tank by a strong metal clamp to achieve sealing. The gas phase communicating pipe 5 connects the battery boxes in series, and the fluorination liquid steam can circulate in the gas phase communicating pipe, so that the fluorination liquid steam pressure in each battery box is kept consistent, and the boiling point of the fluorination liquid in each box is kept consistent. In this example, the gas-phase communicating pipe 5 is a PVC transparent wire hose, and is connected to the tank by a strong metal clamp to achieve sealing.
As shown in fig. 1, the battery module includes: the device comprises a battery 1, a box body 2, a fluorinated liquid 3, a liquid phase communicating pipe 4, a gas phase communicating pipe 5 and a box body upper cover plate 6; when the battery is in operation, the battery begins to generate heat. In the initial stage of heat dissipation, the fluorinated liquid does not reach the boiling point, and the fluorinated liquid absorbs the heat generated by the battery in the working process by using sensible heat. As the operation of the battery continues, when the fluorinated liquid reaches the boiling point, the fluorinated liquid starts to boil, and latent heat is used for absorbing heat emitted by the battery. The fluorinated liquid steam generated by boiling is condensed on the surface of the upper cover plate 6 of the box body, and the heat released by condensation is taken away by the cooling working medium in the cooling coil 7.
As shown in fig. 1, the constant voltage module includes: an air reservoir 8, a piston 9, and a spring 10; when the battery is in a high-rate discharge state, the heat generation power of the battery pack is increased. At this moment, the temperature of the fluorination liquid steam in the battery box body gradually rises, the steam pressure also increases, the steam can push the piston to move rightwards, and part of the fluorination liquid steam can enter the air storage chamber 8. Because 8 upper portions of gas receiver are connected with cooling module, the fluoridizing liquid steam that gets into gas receiver 8 can be at the inside condensation of gas receiver 8, and the circulation of the liquid of fluoridizing is accomplished in the battery box to the liquid communicating pipe 4 reflux of fluoridizing of condensation 3 through the liquid phase. During the running of the vehicle, the discharge rate of the battery is not constant, so the pressure of the fluorinated liquid vapor is changed along with time, and the higher the vapor pressure of the fluorinated liquid is, the larger the rightward movement amplitude of the piston is, so that the larger the condensation area contacted by the fluorinated liquid vapor is. The increase of the condensation area can accelerate the condensation rate of the fluorinated liquid vapor so as to reduce the vapor pressure of the fluorinated liquid, and finally the heat generation quantity of the battery pack and the heat dissipation quantity of the cooling module reach a mutually balanced state.
As shown in fig. 1, the cooling module includes: cooling coil 7, compressor 11, condenser 12 and throttle valve 13. The working medium circulating in the cooling module is a refrigerant, and the refrigerant adopted in the example is R134 a. The refrigerant is vaporized by absorbing heat released by condensation of the fluorinated liquid vapor on the surface of the upper cover plate of the box body and in the air storage chamber in the cooling coil 7, and the vaporized refrigerant is liquefied in the condenser 12 after being compressed by the compressor 11, so that the heat is transferred to the external environment. The liquefied refrigerant passes through the throttle valve 13 and then returns to the cooling coil 7, thereby completing the circulation of the refrigerant.
To sum up, the utility model discloses a double-phase submergence formula battery liquid cooling system of a constant voltage equipment of multimode group sharing utilizes the position of the inside piston of gas receiver to remove the pulse pressure in the buffer tank for the box need not to bear the pressure load of alternation, has improved the stability of system, and meanwhile, the condensation rate of fluoridizing liquid steam can change along with the change of battery heat production rate, makes the heat production of group battery and cooling module's heat dissipation capacity reach the state of mutual equilibrium, even the temperature and the pressure that get the group battery keep basic stability.
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 (3)
1. A two-phase immersed battery liquid cooling system with a multi-mode group sharing a constant voltage device is characterized in that the two-phase immersed battery liquid cooling system with the multi-mode group sharing the constant voltage device comprises a battery pack module, a constant voltage module and a cooling module;
the battery pack module comprises a battery (1), a box body (2), a fluorinated liquid (3), a liquid phase communicating pipe (4), a gas phase communicating pipe (5) and a box body upper cover plate (6); wherein the battery (1) is positioned at the bottom of the box body (2); the liquid phase communicating pipe (4) is connected to the lower positions of the two sides of the box body (2), the gas phase communicating pipe (5) is connected to the upper positions of the two sides of the box body (2), and the liquid phase communicating pipe (4) and the gas phase communicating pipe (5) are respectively used for balancing the liquid level of the fluorinated liquid (3) and the vapor pressure of the fluorinated liquid in different battery modules; when the battery (1) is in a working state, the battery (1) starts to generate heat; in the initial stage of heat dissipation, the fluorinated liquid (3) does not reach the boiling point, and the fluorinated liquid (3) absorbs heat generated by the battery (1) in the working process by using sensible heat; as the operation of the battery (1) continues, when the fluorinated liquid (3) reaches the boiling point, the fluorinated liquid (3) starts to boil, and latent heat is used for absorbing heat emitted by the battery (1); the fluorinated liquid steam generated by boiling is condensed on the surface of the upper cover plate (6) of the box body, and the heat released by condensation is taken away by the cooling working medium in the cooling coil (7);
the constant pressure module comprises an air storage chamber (8), a piston (9) and a spring (10); the gas storage chamber (8) is connected with the box body (2) through a liquid phase communicating pipe (4) and a gas phase communicating pipe (5) respectively, and the space formed between the gas storage chamber and the box body (2) is closed; the piston (9) is positioned in the air storage chamber (8) and is connected with the air storage chamber (8) through a spring (10); the piston (9) moves left and right in the air storage chamber (8), and the piston (9) is positioned at the leftmost end of the air storage chamber (8) in the initial state that the battery (1) does not work;
the cooling module comprises a cooling coil (7), a compressor (11), a condenser (12) and a throttle valve (13) for circulating a refrigerant; the cooling coil (7), the compressor (11), the condenser (12) and the throttle valve (13) are connected into a ring in sequence through pipelines.
2. The liquid cooling system for the two-phase submerged battery with a multi-module sharing a constant pressure device as claimed in claim 1, wherein the upper end of the air receiver (8) is provided with a cooling pipeline and the cooling pipeline is connected with the cooling module.
3. The liquid cooling system for the two-phase immersed battery with a multi-module sharing a constant pressure device according to claim 1 or 2, characterized in that the height of the lower edge of the air receiver (8) is higher than or equal to the height of the level of the fluorinated liquid in the tank (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021681479.7U CN212230581U (en) | 2020-08-13 | 2020-08-13 | Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021681479.7U CN212230581U (en) | 2020-08-13 | 2020-08-13 | Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device |
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| CN212230581U true CN212230581U (en) | 2020-12-25 |
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| CN202021681479.7U Withdrawn - After Issue CN212230581U (en) | 2020-08-13 | 2020-08-13 | Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883878A (en) * | 2020-08-13 | 2020-11-03 | 大连理工大学 | Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device |
| CN113363616A (en) * | 2021-06-17 | 2021-09-07 | 中国第一汽车股份有限公司 | Pressure-adjustable liquid cooling plate, power battery assembly and vehicle |
-
2020
- 2020-08-13 CN CN202021681479.7U patent/CN212230581U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883878A (en) * | 2020-08-13 | 2020-11-03 | 大连理工大学 | Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device |
| CN111883878B (en) * | 2020-08-13 | 2024-05-10 | 大连理工大学 | Two-phase immersed battery liquid cooling system with multiple modules sharing one constant-pressure device |
| CN113363616A (en) * | 2021-06-17 | 2021-09-07 | 中国第一汽车股份有限公司 | Pressure-adjustable liquid cooling plate, power battery assembly and vehicle |
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