CN113675497B - Immersed liquid cooling energy storage battery box - Google Patents
Immersed liquid cooling energy storage battery box Download PDFInfo
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- CN113675497B CN113675497B CN202110818503.XA CN202110818503A CN113675497B CN 113675497 B CN113675497 B CN 113675497B CN 202110818503 A CN202110818503 A CN 202110818503A CN 113675497 B CN113675497 B CN 113675497B
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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
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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
- H01M10/615—Heating or keeping warm
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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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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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
- H01M10/65—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
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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
- H01M10/65—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
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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
- H01M10/65—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
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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
- H01M10/65—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
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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
- H01M10/65—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
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
Abstract
The invention provides an immersed liquid-cooling energy storage battery box which comprises a battery box shell, a battery module, a fluid director, a heat exchange coil, a flow isolating support, a heating rod and a fan, wherein the battery box shell is divided into an inner cavity I and an inner cavity II which are not communicated with each other by a partition plate, the heat exchange coil, the heating rod and the fan are all arranged in the inner cavity II, the battery module, the fluid director and the flow isolating support are all arranged in the inner cavity I, and the inner cavity I is filled with immersion liquid; the flow isolating support is connected with the shell of the battery box, the flow isolating support is used for supporting the battery module and simultaneously cutting off the flow channel, the fluid director is arranged at the bottom of the inner cavity, the heating rod heats immersion liquid in the heat exchange coil, and the fan cools the immersion liquid in the heat exchange coil. The invention is provided with the fluid director, so that the battery box realizes the effect of temperature stratification in the cavity, and is matched with the heat exchange coil, the heating rod and the fan, so that the energy storage battery box has two modes of heat dissipation in summer and preheating in winter, and meanwhile, the cooling efficiency of immersion liquid is improved, and the temperature equalizing performance of the energy storage battery box is improved.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to an immersed liquid-cooling energy storage battery box.
Background
Lithium ion batteries will continue to occupy a greater share in the global energy storage market, becoming the mainstream of domestic and even global electrochemical energy storage markets. Lithium ion batteries have evolved towards high specific energy, high safety, low cost, long life and waste recovery, with one of the most interesting directional indicators being high energy density. However, thermal management techniques for batteries restrict further increases in battery energy density.
With the gradual improvement of the battery thermal management system, although the traditional air cooling has the advantages of simple structure and low cost, the traditional air cooling has low heat dissipation efficiency and is easily influenced by the environment, and the traditional air cooling can not meet the development requirement of the battery thermal management system. Phase change material cooling is currently in research stage, and has the advantages of high heat dissipation efficiency and good temperature drop, but the cost is high, the weight and the volume are large, but in extreme cases, the material may fail after being completely melted. Liquid cooling is because its radiating efficiency is high, and temperature homogeneity is good, is being in the high-speed development stage at present, how to carry out optimal design with battery liquid cooling thermal management system, and the radiating effect of reinforcing battery box becomes one of the key technical problem that present energy storage development is waited to solve urgently, therefore needs to design a brand-new immersion liquid cooling energy storage battery box.
Disclosure of Invention
In view of this, the present invention provides an immersion type liquid-cooled energy storage battery box, so that an energy storage power station can meet the heat dissipation requirement of a high-rate battery, and also can meet the preheating requirement of the energy storage power station applied to a severe cold region or under a cold condition in winter, and the capacity of the energy storage power station can be further improved on the premise of energy saving.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an immersed liquid cooling energy storage battery box comprises a battery box shell, a battery module, a fluid director, a heat exchange coil, a fluid isolating support, a heating rod and a fan, wherein the battery box shell is divided into a first inner cavity and a second inner cavity which are not communicated with each other by a partition plate arranged in the battery box shell; the flow separation support is connected with a battery box shell, the flow separation support is used for supporting a battery module and simultaneously dividing a flow channel, the fluid director is arranged at the bottom of the inner cavity I, the fluid directors are arranged in two and are respectively a fluid director I and a fluid director II, the two fluid directors are symmetrically arranged and are matched with the divided flow channel of the flow separation support, one end of the fluid director I is provided with a first immersion liquid inlet pipe, and one end of the fluid director II is provided with a second immersion liquid inlet pipe;
the upper part of the partition plate is provided with a communicating hole, an opening at the bottom end of the heat exchange coil is communicated with a second immersion liquid inlet pipe of the fluid director II, an opening at the top end of the heat exchange coil is respectively communicated with a first immersion liquid outlet pipe and a second immersion liquid outlet pipe, the side wall of the second immersion liquid outlet pipe penetrating out of the inner cavity II is connected with an evaporation end of the condensing unit, the first immersion liquid outlet pipe penetrates into the communicating hole on the partition plate and is communicated with the first inner cavity, and the side wall of the first immersion liquid inlet pipe of the fluid director penetrating out of the inner cavity I is connected with the evaporation end of the condensing unit; control valves are arranged on the first immersion liquid inlet pipe, the second immersion liquid inlet pipe, the first immersion liquid outlet pipe and the second immersion liquid outlet pipe;
the heating rod heats immersion liquid in the heat exchange coil, and the fan cools the immersion liquid in the heat exchange coil.
Further, when the external circulation is started, high-temperature immersion liquid at the upper part of the inner cavity I enters the heat exchange coil pipe through the outlet of the immersion liquid outlet pipe I, at the moment, the inlet of the immersion liquid inlet pipe II is closed, the immersion liquid flows out from the outlet of the immersion liquid outlet pipe II, enters the evaporation end of the condensing unit to be cooled, then enters the fluid director I through the inlet of the immersion liquid inlet pipe I, and flows into the inner cavity I, and at the moment, the external circulation of immersion liquid cooling is completed;
when the cooling internal circulation is started, the immersion liquid in the inner cavity I flows into the heat exchange coil from the outlet of the immersion liquid outlet pipe I, the immersion liquid in the heat exchange coil is cooled by the fan, the inlet of the immersion liquid inlet pipe I and the outlet of the immersion liquid outlet pipe II are closed, and the cooled immersion liquid enters the fluid director II from the inlet of the immersion liquid inlet pipe II and flows into the inner cavity I to finish the cooling internal circulation of the immersion liquid;
when the heating internal circulation is started, immersion liquid in the inner cavity I flows into the heat exchange coil from the outlet of the immersion liquid outlet pipe I, the immersion liquid in the heat exchange coil is heated by the heating rod, the inlet of the immersion liquid inlet pipe I and the outlet of the immersion liquid outlet pipe II are closed, the heated immersion liquid enters the fluid director II from the inlet of the immersion liquid inlet pipe II, and therefore the heated immersion liquid flows into the inner cavity I, and the heating internal circulation of the immersion liquid is completed.
Furthermore, at least two layers of flow separation supports and two layers of battery modules are arranged in the inner cavity I from top to bottom, and the first fluid director and the second fluid director are matched with the split flow channels of the flow separation supports positioned at the bottom.
Furthermore, the flow isolating support comprises a vertical plate and a plurality of transverse plates, the transverse plates are fixed on the vertical plate at equal intervals, the vertical plate is connected with the centers of the transverse plates, a flow channel is formed by a gap between every two adjacent transverse plates, and the vertical plate and the transverse plates divide immersion liquid in the shell into a plurality of layers of flow channels.
Furthermore, the first fluid director and the second fluid director are identical in structure and respectively comprise a cylindrical main pipe and a plurality of cylindrical branch pipes, the plurality of cylindrical branch pipes are communicated with the cylindrical main pipe, the middle part of the cylindrical main pipe is communicated with a corresponding immersion liquid inlet pipe, a plurality of round holes are uniformly formed in the pipe wall of each cylindrical branch pipe, the cylindrical branch pipes extend into gaps between two adjacent transverse plates, and the number of the cylindrical branch pipes is matched with the number of the transverse plates.
Further, the cooling inner circulation and the heating inner circulation rely on a pump for immersion liquid circulation.
Further, the heat exchange coil is a spiral pipe from top to bottom.
Furthermore, the two fans are arranged on a group of side walls of the inner cavity body, the side walls are opposite to each other, the fans are evenly distributed on the outer side of the heat exchange coil pipe, and the two fans are respectively opposite to the upper portion and the lower portion of the heat exchange coil pipe.
Further, the immersion liquid is insulating fluorinated liquid.
Furthermore, the heat exchange coil is made of copper.
Compared with the prior art, the immersed liquid cooling energy storage battery box has the following advantages:
1. the battery module is soaked in the battery shell filled with immersion liquid to realize rapid cooling or heating of the battery, and the temperature equalization performance of the battery is ensured; through set up the divertor at the immersion fluid entrance, can make even, the slow inflow battery box inner chamber of immersion fluid, reduce the disturbance of immersion fluid and realize that battery box lower part immersion fluid temperature is low and temperature layering effect that upper portion immersion fluid temperature is high, simultaneously, with the immersion fluid that battery box upper portion temperature is high by the evaporation end that immersion fluid export department got into heat exchange coil or condensing unit and cools off to realize energy-conserving effect.
2. When the energy storage battery box is in a high-rate discharge working condition, cooling external circulation can be started; when the energy storage battery box is in a low-rate discharge working condition, cooling internal circulation can be started, immersion liquid is circulated, and the battery is rapidly cooled; the energy storage battery box is in a winter preheating working condition or in a high and cold area preheating stage, heating internal circulation can be started, and the battery is rapidly heated to an optimal working temperature range.
3. Based on the principle of temperature layering water tank, the battery box highly be greater than battery box bottom limit long term should have better temperature layering effect, so the battery module can superpose two-layerly at least, compares in other immersion fluid energy storage battery boxes, can increase the volume of battery module in the battery box to promote the holistic energy density of battery box.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic perspective view of an immersion type liquid-cooled energy storage battery box according to an embodiment of the present invention;
fig. 2 is a top view of an immersed liquid cooled energy storage battery box according to an embodiment of the invention;
fig. 3 is a left side view of an immersion type liquid cooling energy storage battery box according to an embodiment of the invention;
fig. 4 is a schematic view of the installation structure of the flow separation bracket and the fluid director.
Description of the reference numerals:
1-a battery box housing; 101-inner cavity one; 102-inner chamber two; 2-a battery module; 3-a first fluid director; 301-a first immersion liquid inlet pipe; 4-heat exchange coil pipe; 401-immersion liquid outlet pipe I; 402-an immersion liquid outlet pipe II; 5-heating rod; 6-a fan; 7-a flow-isolating support; 8-a separator; 9-a second fluid director; 901-immersion liquid inlet pipe two.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-4, an immersed liquid-cooling energy-storage battery box comprises a battery box shell 1, a battery module 2, a fluid director, a heat exchange coil 4, a flow isolating support 7, a heating rod 5 and a fan 6, wherein the battery box shell 1 is divided into a first inner cavity 101 and a second inner cavity 102 which are not communicated with each other by a partition plate 8 arranged in the battery box shell, the heat exchange coil 4, the heating rod 5 and the fan 6 are all arranged in the second inner cavity 102, the battery module 2, the fluid director 3 and the flow isolating support 7 are all arranged in the first inner cavity 101, the first inner cavity 101 is filled with immersion liquid, and the second inner cavity 102 is filled with air and is not filled with immersion liquid; the battery module 2 and the fluid director are soaked in the immersion liquid; the flow separation support 7 is connected with the battery box shell 1, the flow separation support 7 is used for supporting the battery module 2 and simultaneously dividing a flow channel to enable the battery module 2 to be in complete contact with immersion liquid, the flow deflectors are arranged at the bottom of the inner cavity I101, the flow deflectors are provided with two flow deflectors which are respectively a first flow deflector 3 and a second flow deflector 9, the two flow deflectors are symmetrically arranged and matched with the divided flow channel of the flow separation support 7, one end of the first flow deflector 3 is provided with a first immersion liquid inlet pipe 301, and one end of the second flow deflector 9 is provided with a second immersion liquid inlet pipe 901;
the upper part of the partition plate 8 is provided with a communicating hole, an opening at the bottom end of the heat exchange coil 4 is communicated with a second immersion liquid inlet pipe 901 of the fluid director II 9, an opening at the top end of the heat exchange coil 4 is respectively communicated with a first immersion liquid outlet pipe 401 and a second immersion liquid outlet pipe 402, the side wall of the second immersion liquid outlet pipe 402 penetrating out of the inner cavity II 102 is connected with the evaporation end of the condensing unit, the first immersion liquid outlet pipe 401 penetrates through the communicating hole on the partition plate 8 to be communicated with a first inner cavity 101, and the side wall of the first immersion liquid inlet pipe 301 of the fluid director I3 penetrating out of the first inner cavity 101 is connected with the evaporation end of the condensing unit; control valves are arranged on the first immersion liquid inlet pipe 301, the second immersion liquid inlet pipe 901, the first immersion liquid outlet pipe 401 and the second immersion liquid outlet pipe 402;
the heating rod 5 heats immersion liquid in the heat exchange coil 4, and the fan 6 cools the immersion liquid in the heat exchange coil 4.
When the external circulation is started, high-temperature immersion liquid at the upper part in the inner cavity I101 enters the heat exchange coil 4 through the outlet of the immersion liquid outlet pipe I401, at the moment, the inlet of the immersion liquid inlet pipe II 901 is closed, the immersion liquid flows out from the outlet of the immersion liquid outlet pipe II 402, enters the evaporation end of the condensing unit to be cooled, then enters the fluid director I3 through the inlet of the immersion liquid inlet pipe I301, flows into the inner cavity I101, and at the moment, the external circulation of the immersion liquid cooling is completed;
when the cooling internal circulation is started, the immersion liquid in the inner cavity body I101 flows into the heat exchange coil 4 from the outlet of the immersion liquid outlet pipe I401, the fan 6 cools the immersion liquid in the heat exchange coil 4, the inlet of the immersion liquid inlet pipe I301 and the outlet of the immersion liquid outlet pipe II 402 are closed, and the cooled immersion liquid enters the fluid director II 9 from the inlet of the immersion liquid inlet pipe II 901 and flows into the inner cavity body I101 to finish the cooling internal circulation of the immersion liquid;
when the heating internal circulation is started, immersion liquid in the inner cavity body I101 flows into the heat exchange coil pipe 4 from the outlet of the immersion liquid outlet pipe I401, then the immersion liquid in the heat exchange coil pipe 4 is heated by the heating rod 5, the inlet of the immersion liquid inlet pipe I301 and the outlet of the immersion liquid outlet pipe II 402 are closed at the moment, the heated immersion liquid enters the fluid director II 9 from the inlet of the immersion liquid inlet pipe II 901, and then flows into the inner cavity body I101, and the heating internal circulation of the immersion liquid is completed.
At least two layers of flow separation supports 7 and two layers of battery modules 2 are arranged in the inner cavity I from top to bottom, and the first fluid director 3 and the second fluid director 9 are matched with a partition flow channel of the flow separation support positioned at the bottom;
the method comprises the following specific steps: the flow separation support 7 comprises a vertical plate and a plurality of transverse plates, the plurality of transverse plates are fixed on the vertical plate at equal intervals, the vertical plate is connected with the centers of the transverse plates, a flow channel is formed by a gap between every two adjacent transverse plates, and the vertical plate and the transverse plates divide immersion liquid in the shell into a plurality of layers of flow channels;
the first fluid director 3 and the second fluid director 9 are identical in structure and respectively comprise a cylindrical main pipe and a plurality of cylindrical branch pipes, the plurality of cylindrical branch pipes are communicated with the cylindrical main pipe, the middle of the cylindrical main pipe is communicated with a corresponding immersion liquid inlet pipe, a plurality of round holes are uniformly formed in the pipe wall of each cylindrical branch pipe, the cylindrical branch pipes extend into gaps between two adjacent transverse plates, and the number of the cylindrical branch pipes is matched with the number of the transverse plates. The arrangement of the fluid director can uniformly and slowly feed the immersion liquid into the first inner cavity 101, so that the temperature disturbance of the immersion liquid is reduced, and the immersion liquid can realize a temperature layering structure with low lower temperature and high upper temperature in the first inner cavity 101 of the battery box. This application realizes the temperature layering in inner chamber body 101, only cools off in the evaporation end of inner chamber body 101 high immersion liquid input heat exchange coil 4 or condensing unit of upper portion temperature, and not wholly cools off immersion liquid, can effectively improve the energy-conserving effect of immersion liquid cooling energy storage battery case.
The cooling internal circulation and the heating internal circulation rely on a pump to carry out immersion liquid circulation.
The heat exchange coil 4 is a spiral pipe from top to bottom, the heat exchange coil 4 is made of copper, the heating rod 5 is arranged on the inner side of the heat exchange coil, the two fans 6 are arranged on a group of side walls of the inner cavity II 102 which are oppositely arranged and are uniformly arranged on the outer side of the heat exchange coil 4, and the two fans 6 are respectively opposite to the upper part and the lower part of the heat exchange coil 4; so arrange that the heat transfer is effectual.
The immersion liquid is insulating fluorinated liquid.
The batteries can be square or cylindrical, and if the batteries are square, no gap exists between the battery modules; if the battery is cylindrical, the battery is closely connected to the battery.
The working process of the application is as follows: when the external circulation is started, high-temperature immersion liquid at the upper part in the inner cavity I101 enters the heat exchange coil 4 through the outlet of the immersion liquid outlet pipe I401, at the moment, the inlet of the immersion liquid inlet pipe II 901 is closed, the immersion liquid flows out from the outlet of the immersion liquid outlet pipe II 402, enters the evaporation end of the condensing unit to be cooled, then enters the fluid director I3 through the inlet of the immersion liquid inlet pipe I301, flows into the inner cavity I101, and at the moment, the external circulation of the immersion liquid cooling is completed;
when the cooling internal circulation is started, the immersion liquid in the inner cavity body I101 flows into the heat exchange coil 4 from the outlet of the immersion liquid outlet pipe I401, the fan 6 cools the immersion liquid in the heat exchange coil 4, the inlet of the immersion liquid inlet pipe I301 and the outlet of the immersion liquid outlet pipe II 402 are closed, the cooled immersion liquid enters the fluid director II 9 from the inlet of the immersion liquid inlet pipe II 901 and flows into the inner cavity body I101, and the cooling internal circulation of the immersion liquid is completed;
when the heating internal circulation is started, the immersion liquid in the inner cavity body I101 flows into the heat exchange coil 4 from the outlet of the immersion liquid outlet pipe I401, the immersion liquid in the heat exchange coil 4 is heated by the heating rod 5, the inlet of the immersion liquid inlet pipe I301 and the outlet of the immersion liquid outlet pipe II 402 are closed, the heated immersion liquid enters the fluid director II 9 from the inlet of the immersion liquid inlet pipe II 901, and therefore the heated immersion liquid flows into the inner cavity body I101, and the heating internal circulation of the immersion liquid is completed.
This application is through design submergence formula liquid cooling energy storage battery case for the battery module soaks in the immersion liquid of circulation, improves the cooling rate of battery module, and optimizes the steady homogeneity of battery module.
This application makes the battery box realize the intracavity temperature layering effect through set up divertor isotructure at incasement immersion liquid entrance, and the two kinds of modes of heat dissipation in summer, winter preheat are existed to the messenger energy storage battery box to the deuterogamy heat exchange coil pipe, heating rod and fan structure, improve the cooling efficiency of immersion liquid simultaneously, improve the samming performance of energy storage battery box.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides an immersion formula liquid cooling energy storage battery case which characterized in that: the solar energy battery box comprises a battery box shell (1), a battery module (2), a fluid director, a heat exchange coil (4), a fluid isolating support (7), a heating rod (5) and a fan (6), wherein the battery box shell (1) is divided into a first inner cavity (101) and a second inner cavity (102) which are not communicated with each other by a partition plate (8) arranged inside the battery box shell, the heat exchange coil (4), the heating rod (5) and the fan (6) are all arranged in the second inner cavity (102), the battery module (2), the fluid director and the fluid isolating support (7) are all arranged in the first inner cavity (101), the first inner cavity (101) is filled with immersion liquid, and the battery module (2) and the fluid director are soaked in the immersion liquid; the flow separation support (7) is connected with the battery box shell (1), the flow separation support (7) is used for supporting the battery module (2) and simultaneously dividing flow channels, the fluid director is arranged at the bottom of the inner cavity I (101), the two fluid directors are respectively a fluid director I (3) and a fluid director II (9), the two fluid directors are symmetrically arranged and matched with the divided flow channels of the flow separation support (7), one end of the fluid director I (3) is provided with an immersion liquid inlet pipe I (301), and one end of the fluid director II (9) is provided with an immersion liquid inlet pipe II (901);
the upper part of the partition plate (8) is provided with a communicating hole, an opening at the bottom end of the heat exchange coil (4) is communicated with a second immersion liquid inlet pipe (901) of the fluid director (9), an opening at the top end of the heat exchange coil (4) is respectively communicated with a first immersion liquid outlet pipe (401) and a second immersion liquid outlet pipe (402), the second immersion liquid outlet pipe (402) penetrates through the side wall of the inner cavity body (102) and is connected with an evaporation end of a condensing unit, the first immersion liquid outlet pipe (401) penetrates through the communicating hole in the partition plate (8) and is communicated with the first inner cavity body (101), and the first immersion liquid inlet pipe (301) of the fluid director (3) penetrates through the side wall of the inner cavity body (101) and is connected with the evaporation end of the condensing unit; control valves are arranged on the first immersion liquid inlet pipe (301), the second immersion liquid inlet pipe (901), the first immersion liquid outlet pipe (401) and the second immersion liquid outlet pipe (402);
the heating rod (5) heats immersion liquid in the heat exchange coil (4), and the fan (6) cools the immersion liquid in the heat exchange coil (4).
2. The immersed liquid-cooled energy storage battery box of claim 1, wherein: when the external circulation is started, high-temperature immersion liquid at the upper part of the inner cavity I (101) enters the heat exchange coil (4) through the outlet of the immersion liquid outlet pipe I (401), at the moment, the inlet of the immersion liquid inlet pipe II (901) is closed, the immersion liquid flows out from the outlet of the immersion liquid outlet pipe II (402), enters the evaporation end of the condensing unit to be cooled, and then enters the fluid director I (3) through the inlet of the immersion liquid inlet pipe I (301) to flow into the inner cavity I (101), and at the moment, the external circulation of immersion liquid cooling is completed;
when the cooling internal circulation is started, immersion liquid in the inner cavity I (101) flows into the heat exchange coil (4) from the outlet of the immersion liquid outlet pipe I (401), then the immersion liquid in the heat exchange coil (4) is cooled by the fan (6), the inlet of the immersion liquid inlet pipe I (301) and the outlet of the immersion liquid outlet pipe II (402) are closed, the cooled immersion liquid enters the fluid director II (9) from the inlet of the immersion liquid inlet pipe II (901) and flows into the inner cavity I (101), and the cooling internal circulation of the immersion liquid is completed;
when the heating inner circulation is started, immersion liquid in the inner cavity body I (101) flows into the heat exchange coil pipe (4) from an outlet of the immersion liquid outlet pipe I (401), the immersion liquid in the heat exchange coil pipe (4) is heated by the heating rod (5), an inlet of the immersion liquid inlet pipe I (301) and an outlet of the immersion liquid outlet pipe II (402) are closed, the heated immersion liquid enters the fluid director II (9) from an inlet of the immersion liquid inlet pipe II (901) and flows into the inner cavity body I (101), and the heating inner circulation of the immersion liquid is completed.
3. The immersed liquid-cooled energy storage battery box of claim 1, wherein: at least two layers of flow separation supports (7) and two layers of battery modules (2) are arranged in the inner cavity I from top to bottom, and the first fluid director and the second fluid director are matched with the split flow channels of the flow separation supports positioned at the bottom.
4. The immersed liquid-cooled energy storage battery box of claim 3, wherein: the flow separation support (7) comprises a vertical plate and a plurality of transverse plates, the transverse plates are fixed on the vertical plate at equal intervals, the vertical plate is connected with the transverse plates at the center, a flow channel is formed by a gap between every two adjacent transverse plates, and the vertical plate and the transverse plates divide immersion liquid in the shell into a plurality of layers of flow channels.
5. The immersed liquid-cooled energy storage battery box of claim 4, wherein: the first fluid director (3) and the second fluid director (9) are identical in structure and respectively comprise a cylindrical main pipe and a plurality of cylindrical branch pipes, the plurality of cylindrical branch pipes are communicated with the cylindrical main pipe, the middle part of the cylindrical main pipe is communicated with a corresponding immersion liquid inlet pipe, a plurality of round holes are uniformly formed in the pipe wall of each cylindrical branch pipe, the cylindrical branch pipes extend into gaps between two adjacent transverse plates, and the number of the cylindrical branch pipes is matched with the number of the transverse plates.
6. The immersed liquid-cooled energy storage battery box of claim 2, wherein: the cooling inner circulation and the heating inner circulation are used for circulating the immersion liquid by a pump.
7. The immersed liquid-cooled energy storage battery box of claim 1, wherein: the heat exchange coil (4) is a spiral pipe from top to bottom.
8. The immersed liquid-cooled energy storage battery box of claim 1, wherein: the two fans (6) are arranged on a group of side walls of the inner cavity II (102) which are arranged oppositely, the two fans are evenly arranged on the outer side of the heat exchange coil (4), and the two fans (6) are respectively opposite to the upper part and the lower part of the heat exchange coil (4).
9. An immersed liquid cooled energy storage battery pack according to any one of claims 1 to 8, wherein: the immersion liquid is insulating fluorinated liquid.
10. An immersed liquid cooled energy storage battery box according to claim 9, wherein: the heat exchange coil (4) is made of copper.
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| CN114464922A (en) * | 2022-02-22 | 2022-05-10 | 河南电池研究院有限公司 | Energy storage battery box |
| CN114578934B (en) * | 2022-04-29 | 2022-07-08 | 苏州浪潮智能科技有限公司 | Server heat dissipation control device and server heat dissipation control method |
| CN116598658A (en) * | 2023-05-05 | 2023-08-15 | 南方电网调峰调频(广东)储能科技有限公司 | Hierarchical pipeline structure of immersed liquid-cooled energy storage system and flow equalizing method |
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