CN114520384B - Passive liquid cooling heat dissipation system and method for energy storage battery assembly - Google Patents
Passive liquid cooling heat dissipation system and method for energy storage battery assembly Download PDFInfo
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- CN114520384B CN114520384B CN202210164071.XA CN202210164071A CN114520384B CN 114520384 B CN114520384 B CN 114520384B CN 202210164071 A CN202210164071 A CN 202210164071A CN 114520384 B CN114520384 B CN 114520384B
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- heat dissipation
- radiating pipe
- energy storage
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- 239000007788 liquid Substances 0.000 title claims abstract description 139
- 238000004146 energy storage Methods 0.000 title claims abstract description 47
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 42
- 238000001816 cooling Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000002826 coolant Substances 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 8
- 238000004880 explosion Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
-
- 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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- 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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an energy storage battery assembly passive liquid cooling heat dissipation system and method, which relate to the technical field of heat exchange equipment cooling, and comprise a liquid storage container, wherein an outlet of the liquid storage container is connected with a first heat dissipation pipe through a liquid supply pipe, an inlet of the liquid storage container is connected with a second heat dissipation pipe through a liquid return pipe, and the first heat dissipation pipe is communicated with the second heat dissipation pipe to form a circulation channel; the first radiating pipe is used for being attached to the shell side of the energy storage battery assembly, and the second radiating pipe is used for being attached to the working side of the energy storage battery assembly, so that the second radiating pipe and the first radiating pipe form a temperature difference. The invention uses the density difference of the liquid supply and the liquid return as the circulating power, does not depend on external energy supply, saves energy consumption and has simple structure.
Description
Technical Field
The invention relates to the technical field of heat exchange equipment cooling, in particular to an energy storage battery assembly passive liquid cooling heat dissipation system and method.
Background
The temperature of the energy storage battery assembly can be increased in the charging or discharging process, and cooling treatment is needed to prevent the energy storage battery assembly from being damaged. The liquid cooling medium has high heat exchange coefficient, large heat capacity, high cooling speed and good cooling effect on the energy storage battery assembly.
In general, the conventional cooling system uses water as a heat transfer medium, and requires external power such as electric power to drive, but external force is not fully utilized in the process of actually driving water circulation, so that energy consumption is wasted. For example, the prior art discloses a power battery water-cooled heat dissipation system of an electric automobile, which comprises an evaporator, an expansion water tank, a heat dissipation liquid driving water pump and a cooling sleeve plate, wherein the heat dissipation liquid in a circulation loop is driven to directionally flow by the heat dissipation liquid driving water pump, and the heat dissipation liquid enters an inner circulation pipeline of the cooling sleeve plate from a heat dissipation liquid inlet to take heat out and flow into the evaporator for cooling.
According to the scheme, the inlet and the outlet of the cooling liquid are positioned on the same horizontal plane, so that the cooling liquid can be circularly cooled only by being driven by the water pump, and the problem of energy consumption waste exists; and the cooling sleeve plate is arranged around the battery pack, and the cooling sleeve plate and the battery pack are not easy to match.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an energy storage battery assembly passive liquid cooling heat dissipation system and method, which utilize the density difference of liquid supply and liquid return as circulating power, do not depend on external energy supply, save energy consumption and have simple structure.
In order to achieve the above object, the present invention is realized by the following technical scheme:
In a first aspect, an embodiment of the present invention provides an passive liquid cooling heat dissipation system for an energy storage battery assembly, including a liquid storage container, an outlet of the liquid storage container is connected to a first heat dissipation pipe through a liquid supply pipe, an inlet of the liquid storage container is connected to a second heat dissipation pipe through a liquid return pipe, and the first heat dissipation pipe is communicated with the second heat dissipation pipe to form a circulation channel;
the first radiating pipe is used for being attached to the shell side of the energy storage battery assembly, and the second radiating pipe is used for being attached to the working side of the energy storage battery assembly, so that the second radiating pipe and the first radiating pipe form a temperature difference.
As a further implementation manner, the first radiating pipe and the second radiating pipe are respectively formed by bending parts with multiple sections connected in sequence.
As a further implementation, the bent portions are uniformly distributed.
As a further implementation, the reservoir inlet position is higher than the reservoir outlet position.
As a further implementation, the reservoir outlet is located at the bottom of the reservoir.
As a further implementation mode, the liquid supply pipe is provided with a liquid inlet valve, and the liquid return pipe is provided with a liquid return valve.
As a further implementation manner, the first radiating pipe and the second radiating pipe are respectively provided with a high Wen Zibao device.
As a further implementation, the liquid storage container is filled with a liquid cooling medium.
In a second aspect, an embodiment of the present invention further provides a passive liquid cooling heat dissipation method for an energy storage battery assembly, where the liquid cooling heat dissipation system includes:
The energy storage battery assembly is arranged between the first radiating pipe and the second radiating pipe, and liquid enters the first radiating pipe from the liquid storage container through the liquid supply pipe;
The heat generated by the energy storage battery component enables the temperature of the second radiating pipe to be higher than that of the first radiating pipe, density difference is formed, and liquid in the second radiating pipe is enabled to return to the liquid storage container through the liquid return pipe so as to circularly cool the energy storage battery component.
As a further implementation, when the energy storage battery assembly reaches a preset temperature, the high Wen Zibao device is subjected to self-explosion water spraying.
The beneficial effects of the invention are as follows:
(1) The first radiating pipe and the second radiating pipe are arranged on different sides of the energy storage battery assembly, and because the temperature difference exists between the liquid supply and the liquid return, the density difference is generated, the density difference between the liquid supply and the liquid return is used as circulating power, the external energy supply is not relied on, the energy consumption is saved, and the structure is simple.
(2) The inlet position of the liquid storage container is higher than the outlet position of the liquid storage container, so that liquid cooling medium can flow out from the liquid supply pipe under the action of gravity, and the liquid cooling medium returns into the liquid storage container from the liquid return pipe based on the temperature difference principle, so that the heated reflux medium can be cooled again in the liquid storage container, and the recycling of the medium is realized.
(3) According to the invention, the first radiating pipe and the second radiating pipe are sequentially connected through the multi-section bending parts, so that the radiating area can be increased; the first radiating pipe and the second radiating pipe are also provided with high Wen Zibao devices, when abnormal high temperature state occurs, the devices can detect abnormal high temperature and spray water in a self-explosion way, so that the purpose of automatic fire control is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of a structure in accordance with one or more embodiments of the invention.
Wherein, 1, a liquid storage container, 2, a liquid supply pipe, 3, a liquid inlet valve, 4, a first radiating pipe, 5 and an energy storage battery component, 6, a second radiating pipe, 7, a liquid return pipe, 8, a liquid return valve, 9, a high Wen Zibao device, 10 and an energy storage battery assembly.
Detailed Description
Embodiment one:
The embodiment provides an energy storage battery assembly passive liquid cooling heat dissipation system, because an energy storage battery assembly 10 is composed of a shell and a battery arranged in the shell, one side of the shell is provided with an opening, the battery in the shell is exposed, one side of the battery is exposed to be a working side, and the other side of the battery is exposed to be a shell side; the present embodiment designs a liquid-cooled heat dissipation system based on the principle that the temperature of the housing side and the battery side of the energy storage battery assembly 10 are different.
As shown in fig. 1, the liquid cooling heat dissipation system includes a liquid storage container 1, a liquid supply pipe 2, a liquid return pipe 7, a first heat dissipation pipe 4 and a second heat dissipation pipe 6, and an energy storage battery assembly 10 is disposed between the first heat dissipation pipe 4 and the second heat dissipation pipe 6, wherein the first heat dissipation pipe 4 contacts with a side surface of a shell of the energy storage battery assembly, and the second heat dissipation pipe 6 contacts with a working side surface of the energy storage battery assembly.
Because the energy storage battery assembly 10 is isolated from the first radiating pipe 4 by a shell, the temperature is lower, the second radiating pipe 6 is directly contacted with the battery, a large amount of heat is generated by the battery in operation, the cooling medium in the second radiating pipe 6 is heated, the temperature is increased, the density is reduced, the liquid supply pipe 2 supplies the cooling medium, the pressure of the first radiating pipe 4 is high, the driving force in the direction of the liquid return pipe 7 is generated, the high-temperature medium is driven to rise to the liquid storage container 1 along the liquid return pipe 7, the heat is dissipated and cooled, the temperature of the cooled medium is reduced, the density is increased, and the cooled medium is reduced to the liquid supply pipe 2, so that the circulating flow is formed only by the density difference.
The reservoir 1 is filled with a liquid cooling medium, such as water; the capacity of the liquid storage container 1 is set according to the size requirement of the actual energy storage battery assembly 10, and the shape of the liquid storage container 1 can be set arbitrarily, and the liquid storage container can be of a closed structure or of a top opening structure.
The liquid storage container 1 is installed at a position higher than the first radiating pipe 4 and the second radiating pipe 6 so that the liquid cooling medium can flow into the liquid supply pipe 2 by gravity.
The liquid storage container 1 is provided with a liquid storage container inlet and a liquid storage container outlet, and in order to ensure that liquid smoothly flows out, the setting position of the liquid storage container outlet is lower than the liquid storage container inlet. Preferably, the reservoir outlet is provided at the bottom of the reservoir 1.
The outlet of the liquid storage container is connected with the first radiating pipe 4 through the liquid supply pipe 2, the inlet of the liquid storage container is connected with the second radiating pipe 6 through the liquid return pipe 7, and the first radiating pipe 4 is communicated with the second radiating pipe 6 to form a liquid circulation channel; the liquid cooling matrix sequentially enters the liquid supply pipe 2, the first radiating pipe 4 and the second radiating pipe 6 from the liquid storage container 1, and returns to the liquid storage container 1 through the liquid return pipe 7.
The liquid supply pipe 2 is provided with a liquid inlet valve 3, the liquid return pipe 7 is provided with a liquid return valve 8, and the opening and closing of corresponding pipelines are controlled through the liquid inlet valve 3 and the liquid return valve 8.
In this embodiment, the first heat dissipating tube 4 and the second heat dissipating tube 6 are distributed in a serpentine shape, that is, each of the first heat dissipating tube and the second heat dissipating tube is composed of a plurality of sections of sequentially connected bending portions, and the bending portions are uniformly distributed to form a uniform cooling for each portion of the energy storage battery assembly 10. The bending part is of a U-shaped structure, and the distribution density of the bending part is set according to the model and the size of the energy storage battery assembly 10.
The first radiating pipe 4 and the second radiating pipe 6 are respectively provided with a high Wen Zibao device 9, when an abnormal high temperature state occurs, the high Wen Zibao device 9 can detect the abnormal high temperature and spray water in a self-explosion manner so as to achieve the purpose of automatic fire control.
The high Wen Zibao device 9 is implemented by using the prior art, and will not be described herein.
In the circulating flow process of the liquid cooling medium, the density difference is generated due to the existence of the temperature difference between the liquid supply and the liquid return, so that an passive circulating mode is formed, and external power is not needed.
The present embodiment takes heat away by the circulation of the liquid cooling medium and extinguishes the fire of high Wen Zibao in an abnormally high temperature state, such as internal combustion, of the energy storage battery assembly 10, thereby eliminating the safety problem caused by high temperature and the problem of low battery efficiency in the high temperature state.
Embodiment two:
The embodiment provides a passive liquid cooling heat dissipation method for an energy storage battery assembly, which adopts the liquid cooling heat dissipation system in the first embodiment, and uses water as a liquid cooling medium for carrying out detailed explanation:
The liquid storage container 1 filled with water is placed at a high place, and the energy storage cell assembly 10 is disposed between the first radiating pipe 4 and the second radiating pipe 6. The liquid inlet valve 3 and the liquid return valve 8 are opened, and water enters the first radiating pipe 4 from the liquid supply pipe 2 under the action of gravity.
Because the energy storage battery assembly 10 is isolated from the first radiating pipe 4 by a shell, the temperature is lower, the second radiating pipe 6 is directly contacted with the battery, a large amount of heat is generated by the battery in operation, the water in the second radiating pipe 6 is heated, the water temperature is increased, the density is reduced, cold water is provided by the liquid supply pipe 2, the first radiating pipe 4 has high pressure, the pushing force in the direction of the liquid return pipe 7 is generated, the hot water is driven to rise to the liquid storage container 1 along the liquid return pipe 7, the heat is dissipated and cooled, the cooled water temperature is reduced, the density is increased, and then the cooled water is lowered to the liquid supply pipe 2, and therefore, the circulating flow is formed only by the density difference.
The first radiating pipe 4 and the second radiating pipe 6 are respectively provided with a high Wen Zibao device 9, the energy storage battery assembly 10 is also provided with a water flowing port, and when the energy storage battery assembly 10 reaches the preset temperature, namely, self-explosion water spraying is carried out, the purpose of automatic fire control is achieved.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (5)
1. The passive liquid cooling heat dissipation system of the energy storage battery assembly is characterized by comprising a liquid storage container, wherein an outlet of the liquid storage container is connected with a first heat dissipation pipe through a liquid supply pipe, an inlet of the liquid storage container is connected with a second heat dissipation pipe through a liquid return pipe, and the first heat dissipation pipe is communicated with the second heat dissipation pipe to form a circulation channel;
The first radiating pipe is used for being attached to the shell side of the energy storage battery assembly, and the second radiating pipe is used for being attached to the working side of the energy storage battery assembly, so that the second radiating pipe and the first radiating pipe form a temperature difference;
the first radiating pipe and the second radiating pipe are respectively formed by bending parts which are sequentially connected in a multi-section manner;
The liquid storage container is arranged at a position higher than the first radiating pipe and the second radiating pipe so that the liquid cooling medium can flow into the liquid supply pipe under the action of gravity; the liquid cooling matrix is water;
The inlet position of the liquid storage container is higher than the outlet position of the liquid storage container;
the outlet of the liquid storage container is positioned at the bottom of the liquid storage container;
the liquid supply pipe is provided with a liquid inlet valve, and the liquid return pipe is provided with a liquid return valve.
2. The passive liquid-cooled heat dissipation system of an energy storage battery assembly of claim 1, wherein the bends are uniformly distributed.
3. The passive liquid-cooled heat dissipating system of claim 1, wherein the first and second cooling tubes are each provided with a high Wen Zibao unit.
4. An energy storage battery assembly passive liquid cooling heat dissipation method, characterized in that the liquid cooling heat dissipation system as defined in any one of claims 1-3 is adopted, comprising:
the energy storage battery assembly is arranged between the first radiating pipe and the second radiating pipe, and water enters the first radiating pipe from the liquid storage container through the liquid supply pipe;
the heat generated by the energy storage battery component enables the temperature of the second radiating pipe to be higher than that of the first radiating pipe to form density difference, and the water in the second radiating pipe is promoted to return to the liquid storage container through the liquid return pipe so as to circularly cool the energy storage battery component;
the first radiating pipe and the second radiating pipe are respectively formed by bending parts which are sequentially connected in a multi-section manner;
The inlet position of the liquid storage container is higher than the outlet position of the liquid storage container.
5. The passive liquid cooling heat dissipation method of an energy storage battery assembly of claim 4, wherein when the energy storage battery assembly reaches a preset temperature, water is sprayed by a Wen Zibao device in a self-explosion manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210164071.XA CN114520384B (en) | 2022-02-22 | 2022-02-22 | Passive liquid cooling heat dissipation system and method for energy storage battery assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210164071.XA CN114520384B (en) | 2022-02-22 | 2022-02-22 | Passive liquid cooling heat dissipation system and method for energy storage battery assembly |
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| Publication Number | Publication Date |
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| CN114520384A CN114520384A (en) | 2022-05-20 |
| CN114520384B true CN114520384B (en) | 2024-08-16 |
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| CN202210164071.XA Active CN114520384B (en) | 2022-02-22 | 2022-02-22 | Passive liquid cooling heat dissipation system and method for energy storage battery assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207098018U (en) * | 2017-08-21 | 2018-03-13 | 上海展枭新能源科技有限公司 | A kind of battery bag immersion type evaporation-cooled device |
| KR101882375B1 (en) * | 2017-12-22 | 2018-07-26 | 서울대학교산학협력단 | Cooling system for fuel cell using thermosiphon |
| EP4089812A4 (en) * | 2020-06-10 | 2023-08-16 | Huawei Digital Power Technologies Co., Ltd. | Heat dissipation system, battery module, and power supply and distribution system |
| CN212323043U (en) * | 2020-07-27 | 2021-01-08 | 珠海格力电器股份有限公司 | Fuel cell, power assembly and vehicle |
| CN113410539B (en) * | 2021-05-17 | 2022-09-27 | 中国科学院电工研究所 | Energy storage power station cooling method and system and electronic equipment |
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2022
- 2022-02-22 CN CN202210164071.XA patent/CN114520384B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| Pumpless thermal management of water-cooled high-temperature proton exchange membrane fuel cells;Tae-Won Song等;Journal of Power Sources;第196卷;第4671-4679页 * |
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