CN114006103A - Immersed liquid cooling battery system - Google Patents
Immersed liquid cooling battery system Download PDFInfo
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- CN114006103A CN114006103A CN202111287183.6A CN202111287183A CN114006103A CN 114006103 A CN114006103 A CN 114006103A CN 202111287183 A CN202111287183 A CN 202111287183A CN 114006103 A CN114006103 A CN 114006103A
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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
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
- 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
- H01M10/65—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
- 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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
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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
- H01M50/271—Lids or covers for the racks or secondary 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
- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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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 embodiment of the invention provides an immersed liquid-cooled battery system, and relates to the field of energy storage batteries. The immersed liquid-cooled battery system comprises a battery box, a battery cell module and cooling liquid. The battery box is provided with an accommodating cavity for accommodating the battery cell module. The battery case is provided with water inlet and delivery port, and water inlet and delivery port all communicate with the holding cavity, and the water inlet is used for pouring into the coolant liquid into, and the delivery port is used for discharging the coolant liquid to make the coolant liquid dispel the heat to electric core module under the state of submergence electric core module. Through with the direct submergence of electricity core module in the coolant liquid, the heat that produces among the battery charge-discharge process is taken away in the flow of utilization coolant liquid. The immersed liquid-cooled battery system provided by the invention has the advantages that the temperature control is more accurate, the temperature difference of the battery system is smaller, the consistency of the battery system is favorably improved, and the service life is prolonged. Meanwhile, as the battery system is directly immersed in the cooling liquid, the risks of thermal runaway and thermal diffusion of the battery system can be reduced, and the safety of the battery system is effectively improved.
Description
Technical Field
The invention relates to the field of energy storage batteries, in particular to an immersed liquid cooling battery system.
Background
The air cooling is a heat dissipation mode which takes low-temperature air as a medium and utilizes cold air to contact the surface of the battery for heat exchange so as to reduce the temperature of the battery. The air cooling system has the advantages of simple structure, mature technology and low cost. However, because the heat conductivity coefficient of air is low, the amount of heat that can be taken away is limited, the heat exchange efficiency is low, the internal temperature of the battery system is uneven, and the temperature of the battery system is difficult to realize relatively accurate control.
The liquid cooling is a heat dissipation mode which takes away heat generated by the battery through liquid convection heat transfer and reduces the temperature of the battery. The indirect liquid cooling mainly used in the current battery system has the disadvantages of complex whole system, heavy weight, relatively high cost and limited heat dissipation effect.
Disclosure of Invention
The invention aims to provide an immersion type liquid-cooled battery system, which can directly immerse a battery in cooling liquid and effectively take away heat generated in the charging and discharging processes of the battery by utilizing the flowing of the cooling liquid.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides an immersion type liquid-cooled battery system, which includes a battery box, a battery cell module, and a cooling liquid;
the battery box is provided with an accommodating cavity for accommodating the battery cell module;
the battery case is provided with water inlet and delivery port, the water inlet with the delivery port all with the holding cavity intercommunication, the water inlet is used for pouring into the coolant liquid, the delivery port is used for discharging the coolant liquid, so that the coolant liquid is in the submergence the state of electric core module is right the electricity core module dispels the heat.
In an optional embodiment, the immersed liquid-cooled battery system further comprises a heat management unit, two ends of the heat management unit are respectively connected with the water inlet and the water outlet, and the heat management unit is used for adjusting the temperature and the flow of the cooling liquid.
In an optional embodiment, the number of the heat management units comprises a plurality of heat management units, and each of the plurality of heat management units comprises a water pump;
the quantity of holding cavity includes a plurality ofly, and is a plurality of the holding cavity all is provided with the water inlet with the delivery port, and is a plurality of the both ends of water pump are respectively with a plurality of the holding cavity the water inlet with the delivery port is connected to form a plurality of independent liquid cooling return circuits.
In an optional embodiment, the battery cell module includes a plurality of battery cells, and each of the battery cells is provided with a housing, and the housing is provided with an insulating coating or a heat-conducting adhesive layer.
In an optional embodiment, the battery cell includes a battery cell body and a terminal column, which are connected to each other, the battery cell body is immersed in the cooling liquid, and the terminal column exposes a liquid level of the cooling liquid.
In an alternative embodiment, the submerged liquid-cooled battery system further comprises an upper cover, the upper cover being sealingly connected to the battery case;
the upper cover is provided with a plurality of openings, and the openings are used for exposing the pole posts.
In an optional embodiment, the upper cover is further provided with a plurality of explosion-proof valves, and the explosion-proof valves correspond to the battery cells one to one.
In an alternative embodiment, a plurality of first flow passages are formed between the battery cells and the inner wall of the battery box, and the first flow passages are respectively communicated with the water inlet and the water outlet.
In an alternative embodiment, a plurality of protrusions are disposed at the bottom of the battery case, and a second flow channel is formed between two adjacent protrusions, and the second flow channel is communicated with the first flow channel.
In alternative embodiments, the cooling fluid is pure water or an aqueous ethylene glycol solution or an electronic fluorination fluid.
The beneficial effects of the immersion type liquid cooling battery system provided by the embodiment of the invention comprise that: through with the direct submergence of electricity core module in the coolant liquid, the heat that produces among the battery charge-discharge process is taken away in the flow of utilization coolant liquid. The immersed liquid-cooled battery system provided by the invention has the advantages that the temperature control is more accurate, the temperature difference of the battery system is smaller, the consistency of the battery system is favorably improved, and the service life is prolonged. Meanwhile, as the battery system is directly immersed in the cooling liquid, the risks of thermal runaway and thermal diffusion of the battery system can be reduced, and the safety of the battery system is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an immersion type liquid-cooled battery system according to an embodiment of the present invention;
fig. 2 is an exploded view of a battery pack according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery cell module and an upper cover according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a battery pack according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a partial structure of a battery pack and a flow direction of a coolant according to an embodiment of the present invention.
Icon: 10-an immersed liquid-cooled battery system; 100-a battery pack; 110-a battery compartment; 111-a containment cavity; 112-a water inlet; 113-a water outlet; 114-a separator; 115-protrusions; 116-a first flow channel; 117-second flow path; 130-cell module; 131-cell core; 1311-cell body; 1313-pole; 150-upper cover; 151-opening a hole; 153-explosion-proof valve; 170-a bus bar; 190-a top cover; 200-a thermal management unit; 210-water pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The immersion cooling technical principle is as follows: the submerged cooling technology is a technical method for directly placing a heat source (such as electronic equipment, a server, a transformer iron core, a nuclear reactor and the like) in liquid and cooling the heat source by utilizing heat conduction, convection (natural convection or forced convection) and even boiling (gas-liquid phase change) of the liquid.
Immersion liquid cooling is typically direct contact liquid cooling, which is more efficient in heat dissipation than indirect liquid cooling because the heating element is in direct contact with the cooling liquid.
Referring to fig. 1 to 2, the present invention provides an immersion type liquid-cooled battery system 10, which is mainly used in the field of energy storage batteries. The submerged liquid-cooled battery system 10 includes a battery pack 100, a cooling liquid (not shown), and a thermal management unit 200.
In the present embodiment, the battery pack 100 includes a battery case 110, a cell module 130, an upper cover 150, a bus bar 170, and a top cover 190 connected in this way.
Further, referring to fig. 3, the battery cell module 130 includes a plurality of battery cells 131, each of which is provided with a housing (not shown), and the housing is provided with an insulating coating or a heat conductive adhesive layer.
In this embodiment, the shape and contour of the battery cell is square, the housing is an aluminum or steel shell, and the housing is subjected to insulation treatment to prevent the battery cell from electric leakage, thereby improving the safety performance of the immersion type liquid-cooled battery system.
Specifically, the shell can be subjected to insulating spraying treatment, and a ceramic material or a high polymer material can be selected as a coating; and the shell can be dipped to form a heat-conducting adhesive layer on the shell, so that the shell of the battery cell achieves the effects of insulation and heat conduction.
Further, the battery cell comprises a cell body 1311 and a pole 1313 which are connected with each other, the cell body 1311 is immersed in the cooling liquid, and the pole 1313 is exposed out of the liquid level of the cooling liquid. The upper cover is hermetically connected with the battery box. The upper cover 150 is provided with a plurality of openings 151, and the openings 151 are used for exposing the poles 1313 of the battery cells 131.
In this embodiment, the battery box 110, the upper cover 150 and the top cover 190 are sealed by a sealant or a sealing strip, so that the accommodating cavity 111 forms a closed space, and accommodates the battery cell module 130 and the cooling liquid, and meanwhile, the cooling liquid can be prevented from overflowing. The post 1313 is exposed out of the liquid level of the cooling liquid and extends out of the accommodating cavity through the opening 151 to be connected with the busbar.
Further, the upper cover 150 is further provided with a plurality of explosion-proof valves 153, and the plurality of explosion-proof valves 153 correspond to the plurality of battery cells one to one.
In this embodiment, the number of the explosion-proof valves 153 is the same as that of the battery cells 131, and the positions of the explosion-proof valves 153 correspond to the plurality of battery cells 131 one to one.
Further, referring to fig. 3 and fig. 4, the battery box 110 has an accommodating cavity 111 for accommodating the battery cell module 130. Battery case 110 is provided with water inlet 112 and delivery port 113, and water inlet 112 and delivery port 113 all communicate with holding cavity 111, and water inlet 112 is used for injecting the coolant liquid, and delivery port 113 is used for discharging the coolant liquid to make the coolant liquid dispel the heat to electric core module 130 under the state of submergence electric core module 130.
In this embodiment, it should be noted that, the battery cell module 130 is immersed in the cooling liquid in the accommodating cavity 111 in the initial state, the low-temperature cooling liquid is injected through the water inlet 112, and the hot cooling liquid absorbing the heat of the battery cell 131 is discharged through the water outlet 113, that is, the cooling liquid in the accommodating cavity 111 is injected and discharged simultaneously to replace the cooling liquid in the accommodating cavity 111, so that the battery cell 131 is cooled by the flowing cooling liquid all the time, and the heat dissipation effect is ensured. And the liquid level of the cooling liquid in the accommodating cavity 111 is not changed in the whole heat dissipation process.
It is understood that the cooling fluid only submerges the body of the cell 131 and does not submerge the post 1313 of the cell 131. Because the body of the battery cell 131 is completely immersed in the cooling liquid, when abnormal heat generation occurs inside the battery cell 131, the flow rate of the cooling liquid is increased by adjusting the water pump 210 in the thermal management unit 200, so that the cooling liquid can rapidly absorb a large amount of heat, and the risk of thermal runaway occurring in the battery cell 131 is reduced.
In practical application, through with electric core module 130 direct submergence in the coolant liquid, the heat that produces in the battery charge-discharge process is taken away in the flow of usable coolant liquid. Compared with the traditional air cooling or cold plate type liquid cooling system, the temperature control of the immersed liquid cooling battery system 10 is more accurate, the temperature difference of the battery system is smaller, the consistency of the battery system is favorably improved, and the service life is prolonged. Meanwhile, as the battery system is directly immersed in the cooling liquid, the risks of thermal runaway and thermal diffusion of the battery system can be reduced, and the safety of the battery system is effectively improved.
Further, the cooling liquid is pure water or ethylene glycol aqueous solution or electronic fluorination liquid.
In the present embodiment, the cooling liquid includes any one of pure water, an ethylene glycol aqueous solution, and an electron fluorination liquid. The immersed liquid-cooled battery system is a single-phase liquid cooling, and the entire accommodating cavity 111 can be filled with the cooling liquid through the immersed liquid-cooled battery system, so that the battery cell module 130 can be effectively cooled. In practical applications, pure water is low in cost, and is generally preferred as the cooling liquid, so that the use cost of the immersed liquid-cooled battery system is effectively reduced.
Of course, the cooling liquid may also be other types of cooling liquids, and different cooling liquids may be selected according to actual situations, which is not specifically limited herein.
Further, with continuing reference to fig. 1 to 5, two ends of the thermal management unit 200 are respectively connected to the water outlet 113 and the water inlet 112 for adjusting the temperature and the flow rate of the cooling liquid. And the number of the thermal management units 200 includes a plurality, and each of the plurality of thermal management units 200 includes a water pump 210.
Specifically, the heat management unit 200 includes a compressor, a fan, a condenser, a heat exchanger, a water pump 210, and valves. In practical applications, the submerged liquid-cooled battery system includes several customized thermal management units 200, each thermal management unit 200 including a plurality of water pumps 210.
Further, the number of the accommodating cavities includes a plurality of accommodating cavities, the accommodating cavities are provided with water inlets and water outlets, and two ends of the water pumps 210 are connected with the water inlets and the water outlets of the accommodating cavities respectively to form a plurality of independent liquid cooling loops.
In this embodiment, two ends of the water pump 210 are respectively connected to the water outlet 113 and the water inlet 112 through a coolant pipeline, so that coolant is injected into the water inlet 112 through the water pump 210, and the coolant after dissipating heat from the battery cell 131 is discharged through the water outlet 113 and then returns to the water pump 210, so as to form a liquid cooling loop. The battery cell 131 is always immersed in the cooling liquid in the accommodating cavity 111, and heat generated in the charging and discharging processes of the battery cell 131 is taken away through the circulating flow of the cooling liquid, so that the heat dissipation efficiency and the heat dissipation effect are improved.
In practical application, the temperature and the flow rate of the cooling liquid and the operating power of the heat management unit 200 are generally adjusted to control the temperature of the battery core module 130 in the accommodating cavity 111 to reach the working temperature, and meanwhile, the temperature difference of the whole immersion type liquid cooling battery system 10 can be controlled within 3 ℃, so that the temperature consistency of the immersion type liquid cooling battery system 10 is improved, and the service life of the battery module is prolonged.
In the present embodiment, the battery box 110 further includes a partition 114, and the partition 114 may be integrally formed with the battery box 110 or detachably mounted to the battery box 110, which is not limited herein. A plurality of adjacent receiving cavities 111 in the battery case 110 are separated by partitions 114, and the number of receiving cavities 111 is usually an even number to receive an even number of cell modules 130. The plurality of water pumps 210 correspond to the plurality of accommodating cavities 111 one by one to form a plurality of liquid cooling loops, so that the plurality of accommodating cavities 111 are independently cooled, the temperature of the cooling liquid in the plurality of accommodating cavities 111 is kept basically consistent, and the heat dissipation efficiency and the safety performance are improved.
Specifically, in one embodiment of the present invention, the number of the accommodating cavities 111 is two, and each of the two accommodating cavities 111 is provided with one water inlet 112 and one water outlet 113. Correspondingly, the number of the water pumps 210 is also two, and the two water pumps 210 are respectively connected with the two accommodating cavities 111 to form two cooling loops, so that the two accommodating cavities 111 are independently cooled, the temperature of the cooling liquid in each accommodating cavity 111 is kept basically consistent, and the heat dissipation efficiency is improved. On the other hand, because this embodiment adopts pure water as the coolant liquid, through holding many clusters of electric core module 130 respectively in a plurality of independent holding cavity 111, can avoid under the condition of electric core 131 electric leakage, because whole electric core module 130 voltage is too big and carry out the electrolysis to the coolant liquid to influence the radiating effect, cause the potential safety hazard even. Thus, the safety performance of the immersion liquid-cooled battery system 10 may be improved while improving the heat dissipation efficiency of the immersion liquid-cooled battery system 10.
Optionally, the number and connection manner of the water pumps 210 and the accommodating cavities 111 may also be other arrangements, which are not specifically limited herein.
Further, the water inlet 112 and the water outlet 113 are disposed at two opposite sides of the accommodating cavity 111.
In this embodiment, the water inlet 112 and the water outlet 113 are disposed on two opposite sides of the accommodating cavity 111, so that the cooling water can be prevented from flowing through too long lines, and a large temperature difference exists between the water inlet 112 and the water outlet 113, thereby improving the temperature consistency of the immersion type liquid cooling battery system 10 and prolonging the service life of the battery cell module 130.
Further, first flow passages 116 are formed between the plurality of battery cells 131 and between the battery cells 131 and the inner wall of the battery case 110, and the first flow passages 116 are respectively communicated with the water inlet 112 and the water outlet 113. The direction of the first flow channel 116 between the plurality of battery cells 131 is consistent with the direction of the water inlet 112 towards the water outlet 113.
Specifically, two batteries 131 are one row, and a plurality of batteries 131 are multiseriate interval distribution, and battery 131 sets up with the inside wall interval of battery case 110 to form first runner 116, thereby guarantee that the coolant can flow through the surface of battery 131 and dispel the heat for it through first runner 116. And the direction of the cell 131 flow channels among the multiple columns of cells 131 is consistent with the direction of the water inlet 112 towards the water outlet 113, so that the cooling liquid can more easily flow from the water inlet 112 to the water outlet 113 through the first flow channel 116, and the flowing cooling liquid can quickly absorb a large amount of heat, thereby improving the heat dissipation efficiency. Wherein the flow of the cooling liquid is indicated by arrows in fig. 5.
It is understood that, in other embodiments, the placement manner of the plurality of battery cells 131 and the specific arrangement of the first flow channel 116 may also be other manners, and may be adjusted according to practical applications, and is not limited specifically herein.
Further, referring to fig. 4, the bottom of the battery case 110 is provided with a plurality of protrusions 115, and a second flow channel 117 is formed between two adjacent protrusions 115. The direction of the second flow channel 117 coincides with the direction of the water inlet 112 towards the water outlet 113.
In the present embodiment, the protrusion 115 may be integrally formed with the battery case 110, or may be detachably mounted to the bottom of the battery case 110. The plurality of protrusions 115 are each in a square column shape, and the plurality of protrusions 115 are arranged at intervals to form a second flow channel 117 between two adjacent protrusions 115, and the second flow channel is communicated with the first flow channel.
In practical application, the protrusions 115 support the cell module 130, and meanwhile, the second flow channel 117 between two adjacent protrusions 115 can be used for cooling liquid to flow, and the direction of the second flow channel 117 is consistent with the direction of the water inlet 112 towards the water outlet 113, so that the cooling liquid can flow to the water outlet 113 from the water inlet 112 through the second flow channel 117 more easily, and the flowing cooling liquid can absorb a large amount of heat quickly, thereby improving the heat dissipation efficiency.
In summary, the embodiment of the present invention provides an immersion type liquid-cooled battery system 10, in which the battery cell module 130 is directly immersed in the cooling liquid, and the heat generated during the charging and discharging processes of the battery is taken away by the flow of the cooling liquid. Compared with the traditional air cooling or cold plate type liquid cooling system, the temperature control of the immersed liquid cooling battery system 10 is more accurate, the temperature difference of the battery system is smaller, the consistency of the battery system is favorably improved, and the service life is prolonged. Meanwhile, as the battery system is directly immersed in the cooling liquid, the risks of thermal runaway and thermal diffusion of the battery system can be reduced, and the safety of the battery system is effectively improved. Choose for use the pure water as the coolant liquid, can guarantee to effectively dispel the heat to electric core module 130, use cost is low simultaneously. The plurality of water pumps 210 correspond to the plurality of accommodating cavities 111 one by one to form a plurality of liquid cooling loops, so that the plurality of accommodating cavities 111 are independently cooled, the temperature of the cooling liquid in the plurality of accommodating cavities 111 is kept basically consistent, and the heat dissipation efficiency and the safety performance are improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An immersed liquid-cooled battery system is characterized by comprising a battery box, a battery cell module and cooling liquid;
the battery box is provided with an accommodating cavity for accommodating the battery cell module;
the battery case is provided with water inlet and delivery port, the water inlet with the delivery port all with the holding cavity intercommunication, the water inlet is used for pouring into the coolant liquid, the delivery port is used for discharging the coolant liquid, so that the coolant liquid is in the submergence the state of electric core module is right the electricity core module dispels the heat.
2. The immersed liquid-cooled battery system of claim 1, further comprising a thermal management unit, wherein two ends of the thermal management unit are connected to the water inlet and the water outlet, respectively, and the thermal management unit is configured to regulate the temperature and flow rate of the cooling liquid.
3. The submerged liquid-cooled battery system of claim 2, wherein the number of thermal management units comprises a plurality, each of the plurality of thermal management units comprising a water pump;
the quantity of holding cavity includes a plurality ofly, and is a plurality of the holding cavity all is provided with the water inlet with the delivery port, and is a plurality of the both ends of water pump are respectively with a plurality of the holding cavity the water inlet with the delivery port is connected to form a plurality of independent liquid cooling return circuits.
4. The immersed liquid-cooled battery system of claim 1, wherein the cell module comprises a plurality of cells, each of the plurality of cells being provided with a housing, the housing being provided with an insulating coating or a thermally conductive adhesive layer.
5. The immersed liquid-cooled battery system of claim 4, wherein the cell comprises a cell body and a post connected to each other, the cell body is immersed in the cooling liquid, and the post exposes a surface of the cooling liquid.
6. The submerged liquid-cooled battery system of claim 5, further comprising an upper cover, the upper cover being sealingly connected to the battery compartment;
the upper cover is provided with a plurality of openings, and the openings are used for exposing the pole posts.
7. The immersed liquid-cooled battery system of claim 6, wherein the upper cover is further provided with a plurality of explosion-proof valves, the plurality of explosion-proof valves corresponding to the plurality of cells one-to-one.
8. The immersed liquid-cooled battery system of claim 7, wherein a first flow path is formed between a plurality of said cells and between said cells and an inner wall of said battery case, said first flow path being in communication with said water inlet and said water outlet, respectively.
9. The submerged liquid-cooled battery system of claim 8, wherein the bottom of the battery compartment has a plurality of protrusions, and a second flow channel is formed between two adjacent protrusions, the second flow channel being in communication with the first flow channel.
10. An immersion liquid-cooled battery system as claimed in claim 1, wherein the cooling liquid is pure water or an aqueous solution of ethylene glycol or an electronic fluoride liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111287183.6A CN114006103A (en) | 2021-11-02 | 2021-11-02 | Immersed liquid cooling battery system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111287183.6A CN114006103A (en) | 2021-11-02 | 2021-11-02 | Immersed liquid cooling battery system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976382A (en) * | 2022-06-10 | 2022-08-30 | 浙江大学 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
| CN115377551A (en) * | 2022-10-26 | 2022-11-22 | 深圳海润新能源科技有限公司 | Energy storage container and energy storage system |
| CN116885340A (en) * | 2023-09-06 | 2023-10-13 | 成都沃飞天驭科技有限公司 | Immersed battery module and thermal management system thereof |
| CN117239296A (en) * | 2023-11-14 | 2023-12-15 | 山东京瓷光能科技有限公司 | Direct liquid cooling battery system and preparation method thereof |
| CN117293433A (en) * | 2023-11-27 | 2023-12-26 | 珠海科创储能科技有限公司 | Immersed liquid-cooled battery system and explosion-proof method |
| CN117393913A (en) * | 2023-12-12 | 2024-01-12 | 中宏科创新能源科技(浙江)有限公司 | Immersed cooling battery box |
| CN117543130A (en) * | 2024-01-09 | 2024-02-09 | 中宏科创新能源科技(浙江)有限公司 | Immersed energy storage battery plug box |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976382A (en) * | 2022-06-10 | 2022-08-30 | 浙江大学 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
| CN115377551A (en) * | 2022-10-26 | 2022-11-22 | 深圳海润新能源科技有限公司 | Energy storage container and energy storage system |
| CN116885340A (en) * | 2023-09-06 | 2023-10-13 | 成都沃飞天驭科技有限公司 | Immersed battery module and thermal management system thereof |
| CN116885340B (en) * | 2023-09-06 | 2023-11-28 | 成都沃飞天驭科技有限公司 | Immersed battery module and thermal management system thereof |
| CN117239296A (en) * | 2023-11-14 | 2023-12-15 | 山东京瓷光能科技有限公司 | Direct liquid cooling battery system and preparation method thereof |
| CN117239296B (en) * | 2023-11-14 | 2024-02-13 | 山东京瓷光能科技有限公司 | Direct liquid cooling battery system and preparation method thereof |
| CN117293433A (en) * | 2023-11-27 | 2023-12-26 | 珠海科创储能科技有限公司 | Immersed liquid-cooled battery system and explosion-proof method |
| CN117293433B (en) * | 2023-11-27 | 2024-03-26 | 珠海科创储能科技有限公司 | Immersed liquid-cooled battery system and explosion-proof method |
| CN117393913A (en) * | 2023-12-12 | 2024-01-12 | 中宏科创新能源科技(浙江)有限公司 | Immersed cooling battery box |
| CN117393913B (en) * | 2023-12-12 | 2024-03-15 | 中宏科创新能源科技(浙江)有限公司 | Immersed cooling battery box |
| CN117543130A (en) * | 2024-01-09 | 2024-02-09 | 中宏科创新能源科技(浙江)有限公司 | Immersed energy storage battery plug box |
| CN117543130B (en) * | 2024-01-09 | 2024-04-02 | 中宏科创新能源科技(浙江)有限公司 | Immersed energy storage battery plug box |
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