CN111883878A - 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 PDF

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Publication number
CN111883878A
CN111883878A CN202010811711.2A CN202010811711A CN111883878A CN 111883878 A CN111883878 A CN 111883878A CN 202010811711 A CN202010811711 A CN 202010811711A CN 111883878 A CN111883878 A CN 111883878A
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battery
liquid
box body
cooling
storage chamber
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CN111883878B (en
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李羽白
李洋
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Dalian University of Technology
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Dalian University of Technology
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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
    • 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
    • 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)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention belongs to the technical field of power batteries, and provides a two-phase immersed battery liquid cooling system with multiple modules sharing a constant voltage device. 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

Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device
Technical Field
The invention belongs to the technical field of power batteries, and particularly belongs to a two-phase immersed battery liquid cooling system with multiple modules sharing a constant voltage device
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 problems of the two-phase immersed liquid cooling, the invention provides the two-phase immersed battery liquid cooling system with the multi-module sharing one constant-pressure device, and 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.
Disclosure of Invention
The invention aims to provide a two-phase immersed battery liquid cooling system with multiple modules sharing a constant voltage device. 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 invention is as follows:
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 gas storage chamber is connected with the box body through a liquid phase communicating pipe 4 and a gas phase 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 invention has the beneficial effects 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.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. It is to be understood that such description is merely illustrative of the features and advantages of the present invention, and is not intended to limit the scope of the claims.
The invention discloses a two-phase immersed battery liquid cooling system with a multi-module sharing a constant voltage device, which comprises: 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 gas storage chamber is connected with the box body through a liquid phase communicating pipe 4 and a gas phase 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.
In summary, the invention discloses a two-phase immersed battery liquid cooling system with multiple modules sharing a constant pressure device, which utilizes the position movement of a piston in an air storage chamber to buffer the pulse pressure in a box body, so that the box body does not need to bear alternating pressure load, the stability of the system is improved, meanwhile, the condensation rate of the fluoridized liquid steam can change along with the change of the heat production rate of the battery, the heat production quantity of the battery pack and the heat dissipation quantity of a cooling module reach a mutually balanced state, and the temperature and the pressure of the battery pack are kept basically stable.
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).
CN202010811711.2A 2020-08-13 Two-phase immersed battery liquid cooling system with multiple modules sharing one constant-pressure device Active CN111883878B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112366389A (en) * 2020-11-10 2021-02-12 西安电子科技大学芜湖研究院 Automatic heat preservation and radiating liquid cooling battery
CN113093890A (en) * 2021-04-08 2021-07-09 大连理工大学 Two-phase immersed liquid cooling system for blade server of data center
CN114678624A (en) * 2022-03-14 2022-06-28 大连理工大学 Liquid cooling device and cooling system of two-phase immersed battery for super quick charging of lithium battery
WO2022262254A1 (en) * 2021-06-17 2022-12-22 中国第一汽车股份有限公司 Pressure-adjustable liquid cooling plate, traction battery assembly, and vehicle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106440499A (en) * 2016-09-23 2017-02-22 杭州电子科技大学 Blade electric vehicle air conditioner system utilizing battery for heat dissipation and refrigerating and heating method of blade electric vehicle air conditioner system
CN209249603U (en) * 2018-12-25 2019-08-13 中国科学院工程热物理研究所 Sealing immersion cell packet and its cooling system based on fluorination liquid
CN110213934A (en) * 2018-11-30 2019-09-06 中航光电科技股份有限公司 A kind of immersion cooling system and immersion liquid cooling source
US20190357379A1 (en) * 2018-05-18 2019-11-21 Tas Energy Inc. Two-Phase Immersion Cooling System and Method with Enhanced Circulation of Vapor Flow Through a Condenser
CN110767896A (en) * 2018-07-27 2020-02-07 中国科学院物理研究所 Lithium ion battery positive electrode material, preparation method thereof and lithium battery
CN111076591A (en) * 2019-12-25 2020-04-28 大连理工大学 Flat heat pipe with multiple evaporation surfaces sharing condensation cavity for cooling cell stack
CN212230581U (en) * 2020-08-13 2020-12-25 大连理工大学 Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106440499A (en) * 2016-09-23 2017-02-22 杭州电子科技大学 Blade electric vehicle air conditioner system utilizing battery for heat dissipation and refrigerating and heating method of blade electric vehicle air conditioner system
US20190357379A1 (en) * 2018-05-18 2019-11-21 Tas Energy Inc. Two-Phase Immersion Cooling System and Method with Enhanced Circulation of Vapor Flow Through a Condenser
CN110767896A (en) * 2018-07-27 2020-02-07 中国科学院物理研究所 Lithium ion battery positive electrode material, preparation method thereof and lithium battery
CN110213934A (en) * 2018-11-30 2019-09-06 中航光电科技股份有限公司 A kind of immersion cooling system and immersion liquid cooling source
CN209249603U (en) * 2018-12-25 2019-08-13 中国科学院工程热物理研究所 Sealing immersion cell packet and its cooling system based on fluorination liquid
CN111076591A (en) * 2019-12-25 2020-04-28 大连理工大学 Flat heat pipe with multiple evaporation surfaces sharing condensation cavity for cooling cell stack
CN212230581U (en) * 2020-08-13 2020-12-25 大连理工大学 Two-phase immersed battery liquid cooling system with multi-module sharing one constant voltage device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王延宁;: "纯电动汽车动力电池组液冷系统优化及冷却性能研究", 重庆理工大学学报(自然科学), no. 06, 15 June 2020 (2020-06-15) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112366389A (en) * 2020-11-10 2021-02-12 西安电子科技大学芜湖研究院 Automatic heat preservation and radiating liquid cooling battery
CN112366389B (en) * 2020-11-10 2021-10-08 西安电子科技大学芜湖研究院 Automatic heat preservation and radiating liquid cooling battery
CN113093890A (en) * 2021-04-08 2021-07-09 大连理工大学 Two-phase immersed liquid cooling system for blade server of data center
WO2022262254A1 (en) * 2021-06-17 2022-12-22 中国第一汽车股份有限公司 Pressure-adjustable liquid cooling plate, traction battery assembly, and vehicle
CN114678624A (en) * 2022-03-14 2022-06-28 大连理工大学 Liquid cooling device and cooling system of two-phase immersed battery for super quick charging of lithium battery
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

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