CN116780034B - Full-immersion non-circulating flow liquid-cooled battery energy storage thermal management system - Google Patents
Full-immersion non-circulating flow liquid-cooled battery energy storage thermal management system Download PDFInfo
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- CN116780034B CN116780034B CN202311001207.6A CN202311001207A CN116780034B CN 116780034 B CN116780034 B CN 116780034B CN 202311001207 A CN202311001207 A CN 202311001207A CN 116780034 B CN116780034 B CN 116780034B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 19
- 238000007654 immersion Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 96
- 238000001816 cooling Methods 0.000 claims abstract description 94
- 239000000110 cooling liquid Substances 0.000 claims abstract description 37
- 239000003507 refrigerant Substances 0.000 claims abstract description 35
- 238000005057 refrigeration Methods 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 14
- 230000017525 heat dissipation Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 claims description 4
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- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 12
- 239000002826 coolant Substances 0.000 description 9
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- 238000009434 installation Methods 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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 relates to the technical field of battery cooling, and discloses a full-immersion non-circulating flow liquid-cooled battery energy storage thermal management system, which comprises the following components: the liquid cooling battery cabinet is internally provided with a battery cluster, and the battery cluster is immersed by insulating cooling liquid; the heat exchanger is arranged in the liquid cooling battery cabinet and is immersed by insulating cooling liquid; the refrigerating unit is connected with the inflow port and the outflow port of the heat exchanger through heat exchange pipelines and is used for transmitting a refrigerant to perform refrigeration cycle; according to the heat-dissipation device, the battery clusters and the heat exchanger can be completely soaked in the insulating cooling liquid, a powerful heat exchange effect can be directly achieved on the cooling liquid, the problem that the power consumption is high due to the fact that the external heat exchanger is used for carrying out transmission heat exchange on the cooling liquid is solved, and the problem that a high-power pump is used in cooling liquid circulation is solved, and the rapid heat-dissipation effect can be achieved through continuous circulation refrigeration and heat absorption operation of a refrigerant.
Description
Technical Field
The invention relates to the technical field of battery cooling, in particular to a full-immersion non-circulating flow liquid-cooled battery energy storage thermal management system.
Background
At present, the battery energy storage systems on the market are almost air-cooled battery energy storage systems and cold plate type liquid-cooled battery energy storage systems, however, the air-cooled battery energy storage systems and the cold plate type battery energy storage systems achieve the purpose of cooling through heat exchange between air and an electric core in the cooling process, and the heat conductivity coefficient of the air is relatively low, so that the air-cooled battery energy storage systems and the cold plate type battery energy storage systems have the defects of low cooling efficiency and long cooling time, and the circulation flow of insulating cooling liquid is realized through a pump in the operation process, so that the defect of high refrigeration power consumption exists; in order to improve the refrigerating effect, the battery is immersed in the insulating oil to achieve a stronger radiating effect, as shown in application number CN 214153060U, the insulating oil in the battery cabinet is circulated to an external heat exchanger by utilizing a pipeline and an oil pump to radiate heat and then flows back into the battery cabinet, but the circulating flow of insulating cooling liquid is realized by a pump in the running process of the method, the defect of high refrigerating power consumption exists, and the phenomenon of liquid leakage is easily caused outside in the circulating process of the insulating oil conveyed by the pipeline.
Therefore, how to provide a battery cooling system with high-speed heat exchange and low energy consumption for battery cooling is a problem to be solved.
Disclosure of Invention
The invention mainly aims to provide a full-immersion non-circulating flow liquid-cooled battery energy storage heat management system, and aims to solve the technical problem of how to provide a battery cooling system with high-speed heat exchange and low energy consumption for battery cooling.
In order to achieve the above object, a first aspect of the present invention proposes: a full immersion non-circulating flow liquid cooled battery energy storage thermal management system comprising:
the liquid cooling battery cabinet is internally provided with a battery cluster, and the battery cluster is immersed by insulating cooling liquid;
the heat exchanger is arranged in the liquid cooling battery cabinet and is immersed by insulating cooling liquid;
and the refrigerating unit is connected with the inflow port and the outflow port of the heat exchanger through heat exchange pipelines and is used for transmitting a refrigerant to perform refrigeration cycle.
Further, the refrigerating unit comprises a compressor, a condenser, a throttle valve, a three-way valve and a natural cooling coil, wherein the compressor, the condenser and the throttle valve are arranged in the heat exchange pipeline according to the flow direction of the refrigerant;
the first connector and the second connector of the three-way valve are connected with the heat exchange pipeline, the inlet end of the natural cooling coil pipe is connected with the third connector of the three-way valve, and the outlet end of the natural cooling coil pipe is connected with the heat exchange pipeline between the three-way valve and the inflow port.
Further, a temperature sensor and a pressure sensor are arranged in the liquid cooling battery cabinet, and the temperature sensor and the pressure sensor are immersed in the insulating cooling liquid and used for detecting the temperature and the pressure in the liquid cooling battery cabinet and transmitting detected data to a control system; the explosion-proof valve is installed to the upside of liquid cooling battery cabinet, be provided with electric actuator on the explosion-proof valve, when control system judges that current liquid cooling battery cabinet inside pressure and temperature reach the threshold value that needs to open the explosion-proof valve, with electric signal transmission extremely electric actuator opens the valve.
Further, a valve controller is arranged on the throttle valve, when the temperature sensor measures that the temperature generated in the current liquid cooling battery cabinet exceeds a specified threshold value, a temperature signal is transmitted to a control system, then the control system transmits an adjusting signal to the valve controller, and the valve controller adjusts the flow of the refrigerant.
Further, the heat exchanger is annular, a supporting frame is arranged on the outer wall, close to the annular hollow part, of the heat exchanger and is used for being connected with driving blades, and the driving blades rotate through being connected with a driving motor; the blade surfaces of the driving blades face the battery clusters, gaps are arranged between battery modules of the battery clusters, guide vanes are arranged between the gaps, and one side inlet of each gap faces the driving blade.
Further, a groove is formed in one side of the liquid cooling battery cabinet, which is close to the driving blade, and extends inwards, the depth of the groove is smaller than the distance between the driving blade and one side of the liquid cooling battery cabinet, which is close to the driving blade, and the driving motor is placed in the groove, a temperature sensor and a motor control device are arranged on the driving motor, and when the temperature of the driving motor reaches a certain threshold value, the temperature sensor transmits a temperature signal to the motor control device, so that the driving motor is turned off or a gear is regulated.
Further, a flow rate sensor is arranged at the position, close to the inflow port of the heat exchanger, in the heat exchange pipeline, and when the flow rate in the heat exchange pipeline is greater than a certain threshold value, the flow rate sensor transmits flow information to the motor control device, and the motor control device generates power for adjusting the driving motor, so that the driving blades generate different rotating speeds, the flowing speed of insulating cooling liquid in the liquid cooling battery cabinet is adjusted, and the heat dissipation effect is uniform.
Further, a quick plug connector is further arranged in the liquid cooling battery cabinet, the quick plug connector comprises a socket and a plug, the socket is fixedly connected to the inner wall of the bottom side of the liquid cooling battery cabinet, one side of the battery cluster is connected with the plug, and the plug is connected with the socket through a locking mechanism.
Further, internally mounted of liquid cooling battery cabinet has liquid level detection device, the downside of liquid cooling battery cabinet is provided with the fluid-discharge valve, the fluid-discharge valve is located the inside one end of liquid cooling battery cabinet is provided with filter equipment.
Further, the heat exchange pipeline comprises a plurality of heat exchange pipelines, and the heat exchange pipelines are respectively and correspondingly connected with the refrigerating units.
The beneficial effects are that:
the battery cluster and the heat exchanger are completely soaked in the insulating cooling liquid, comprehensive heat transfer and emission are achieved, the battery temperature is effectively reduced, the working efficiency and the service life of the battery are improved, the heat exchanger which is originally used as a ring in a refrigerating system is directly immersed in the cooling liquid, a powerful heat exchange effect can be directly achieved on the cooling liquid, the problem that the power consumption is high due to the fact that the external heat exchanger is used for carrying out transmission heat exchange on the cooling liquid to cause liquid leakage phenomenon and the cooling liquid circulation is solved, and the rapid heat dissipation effect can be achieved through continuous circulation refrigeration and heat absorption operation of a refrigerant.
Drawings
FIG. 1 is a schematic diagram of a fully submerged non-circulating flow liquid-cooled battery energy storage thermal management system according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a liquid-cooled battery cabinet according to an embodiment of the invention;
wherein: 1. a liquid-cooled battery cabinet; 2. a battery cluster; 3. insulating cooling liquid; 4. a heat exchanger; 5. a compressor; 6. a condenser; 7. a throttle valve; 8. a heat exchange pipeline; 11. a driving blade; 12. a driving motor; 13. an explosion-proof valve; 14. a liquid discharge valve; 15. a temperature sensor; 16. a pressure sensor; 17. a flow rate sensor;
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any module and all combination of one or more of the associated listed items.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1-2, an embodiment of the present invention provides a full immersion non-circulating flow liquid-cooled battery energy storage thermal management system, comprising: the liquid cooling battery cabinet 1 is provided with a battery cluster 2 inside the liquid cooling battery cabinet 1, and the battery cluster 2 is immersed by insulating cooling liquid 3; the heat exchanger 4 is arranged in the liquid cooling battery cabinet 1 and is immersed by the insulating cooling liquid 3; and the refrigerating unit is connected with the inflow port and the outflow port of the heat exchanger 4 through a heat exchange pipeline 8 and is used for transmitting a refrigerant to perform refrigeration cycle.
In this embodiment, the liquid-cooled battery cabinet 1 is a box body with a containing cavity therein, the whole box body is in a sealed design, and the upper side of the box body is a cover plate and is in sealed connection with the main body part; the battery cluster 2 is connected in the accommodating cavity of the liquid cooling battery cabinet 1, the battery cluster 2 is detachably connected with the accommodating cavity, and meanwhile, the insulating cooling liquid 3 is placed in the accommodating cavity, wherein the insulating cooling liquid 3 has insulating performance and good heat conductivity, such as Polysiloxane (PDMS), high polymer liquid and the like, the height of the insulating cooling liquid 3 is higher than that of the battery cluster 2, the battery cluster 2 is completely immersed, and the battery cluster 2 can be cooled in an all-around mode. Meanwhile, the heat exchanger 4 is also arranged in the liquid cooling battery cabinet 1 and is close to the inner wall of one side of the liquid cooling battery cabinet 1, an inflow port and an outflow port are formed in two sides of the heat exchanger 4 and are communicated with the inner space of the heat exchanger 4, the heat exchanger is used for supporting inflow and outflow of refrigerants, a heat exchange pipeline 8 is connected to the inflow port and the outflow port in a sealing mode and is used for supporting the refrigerants to flow, the heat exchange pipeline 8 penetrates through the whole refrigerating process and is connected with a refrigerating unit, the refrigerants after heat absorption can be circularly refrigerated through the refrigerating unit, the refrigerants after refrigeration continuously circularly flow in the pipeline, heat exchange is generated between the heat exchanger 4 and the insulating cooling liquid 3, and the temperature of the battery cluster 2 is always kept in a rated range.
In one embodiment, the refrigerating unit comprises a compressor 5, a condenser 6, a throttle valve 7, a three-way valve and a natural cooling coil, wherein the compressor 5, the condenser 6 and the throttle valve 7 are arranged in the heat exchange pipeline 8 according to the flow direction of the refrigerant; the first connector and the second connector of the three-way valve are connected with the heat exchange pipeline 8, the inlet end of the natural cooling coil pipe is connected with the third connector of the three-way valve, and the outlet end of the natural cooling coil pipe is connected with the heat exchange pipeline 8 between the three-way valve and the inflow port.
In this embodiment, the refrigerating unit generates a circulating refrigeration effect through the heat exchange pipeline 8 connected to the outside of the liquid cooling battery cabinet 1, wherein the refrigerant flowing out through the heat exchanger 4 flows into the compressor 5, the compressor 5 sucks a relatively low-pressure low-temperature gas refrigerant and compresses the gas refrigerant into high-pressure high-temperature gas, in the compression process, the energy of the refrigerant is increased, the temperature is increased, the high-pressure high-temperature gas refrigerant enters the condenser 6 to exchange heat with surrounding air or water, the refrigerant releases heat energy, the temperature is gradually reduced, the gas state is converted into a high-pressure liquid state, in the process, a natural cooling mode can be selected through the three-way valve, the refrigerant flows to the natural cooling coil by adjusting the on-off state of the three-way valve, the refrigerant exchanges heat with the external environment in the natural cooling coil, the temperature is further reduced, and in the natural cooling coil, the refrigerant transfers heat to the environment through heat exchange with the environment, so as to achieve the purpose of refrigeration; the condenser 6 condenses the high-temperature and high-pressure gas refrigerant into a liquid state, then controls the flow rate of the liquid state through the throttle valve 7, so that the refrigerant flows to the inflow port, the condenser 6 realizes heat energy transmission and conversion in the processes of continuous compression, condensation and expansion by circularly and reciprocally utilizing the refrigerant, the refrigerating efficiency is improved, a closed-circuit circulation system is used by a refrigerating unit, the low-temperature refrigerant can be continuously conveyed to the heat exchanger 4 arranged in the liquid cooling battery cabinet 1, and the temperature of the insulating cooling liquid 3 in the liquid cooling battery cabinet 1 is absorbed, so that the effect of cooling the battery cluster 2 is achieved.
In an embodiment, a temperature sensor 15 and a pressure sensor 16 are installed in the liquid cooling battery cabinet 1, and the temperature sensor 15 and the pressure sensor 16 are immersed in the insulating cooling liquid 3 and are used for detecting the temperature and the pressure in the liquid cooling battery cabinet 1 and transmitting detected data to a control system; an explosion-proof valve 13 is arranged on the upper side of the liquid cooling battery cabinet 1, an electric actuating mechanism is arranged on the explosion-proof valve 13, and when the control system judges that the pressure and the temperature inside the current liquid cooling battery cabinet 1 reach the threshold value of the explosion-proof valve 13 to be opened, an electric signal is transmitted to the electric actuating mechanism to open the valve.
In this embodiment, the temperature sensor 15 and the pressure sensor 16 are installed in the liquid cooling battery cabinet 1 and are all immersed in the insulating cooling liquid 3, so as to monitor the temperature and the pressure in the liquid cooling battery cabinet 1 in real time, and transmit the detected data to the control system, when the control system receives the data from the temperature sensor 15 and the pressure sensor 16, the data can be processed and analyzed, when the control system judges that the temperature and the pressure in the liquid cooling battery cabinet 1 reach the threshold value required to open the explosion-proof valve 13, the control system sends a corresponding electric signal to the electric actuator, the electric actuator is connected with the explosion-proof valve 13, when the control system sends the electric signal, the electric actuator receives the signal and opens the valve, so as to allow the internal pressure to be discharged through the explosion-proof valve 13, so as to reduce the pressure in the liquid cooling battery cabinet 1, and by installing the temperature sensor 15 and the pressure sensor 16, and the control system and the explosion-proof valve 13 are matched, once the temperature or the pressure in the liquid cooling battery cabinet 1 exceeds the safety threshold value, the valve is opened, the pressure is lightened, the risk of accident is reduced, and the demand of the explosion-proof valve is reduced, and the reliability of the explosion-proof valve is improved.
In an embodiment, a valve controller is installed on the throttle valve 7, and when the temperature sensor 15 measures that the temperature generated in the current liquid cooling battery cabinet 1 exceeds a specified threshold, a temperature signal is transmitted to a control system, and then the control system transmits an adjusting signal to the valve controller, and the valve controller adjusts the flow of the refrigerant.
In this embodiment, the valve controller is connected to the throttle valve 7 and is responsible for controlling the opening degree of the valve, and receives the adjusting signal from the control system, and adjusts the position of the valve according to the signal requirement, the valve controller may adopt different forms such as electric execution, pneumatic execution or hydraulic execution, wherein the liquid cooling battery cabinet 1 is internally provided with a temperature sensor 15 for measuring the current temperature, once the temperature exceeds a specified threshold value, the temperature sensor 15 transmits the detected temperature signal to the control system, the control system receives the temperature signal from the temperature sensor 15, and processes and analyzes, when the temperature exceeds the specified threshold value, the control system generates a corresponding adjusting signal, the throttle valve 7 is a device for adjusting the flow rate of the refrigerant, and is positioned on the heat exchange pipeline 8, the flow rate of the refrigerant is increased or decreased by adjusting the valve controller, and the cooling effect in the liquid cooling battery cabinet 1 can be controlled by adjusting the opening degree of the throttle valve 7, so as to keep within a safe and proper range.
In an embodiment, the heat exchanger 4 is annular, a supporting frame is arranged on the outer wall of the heat exchanger 4, which is close to the annular hollow part, and is used for being connected with a driving blade 11, and the driving blade 11 rotates by being connected with a driving motor 12; the blade surfaces of the driving blades 11 are arranged facing the battery clusters 2, gaps are arranged between the battery modules of the battery clusters 2, guide vanes are arranged between the gaps, and one side inlet of each gap faces the driving blade 11.
In this embodiment, the heat exchanger 4 adopts the annular structure, the heat exchanger 4 of annular structure, under the same refrigerant volume, heat transfer area of contact can be bigger, and the annular is hollow structure, can make insulating coolant 3 better flow in its inside, be equipped with the support frame on its outer wall, the support frame is used for connecting driving vane 11, realize the flow of rivers through driving vane 11's rotation, make rivers can even flow through heat exchanger 4, dispel the heat, driving vane 11 rotates through connecting driving motor 12, the blade face is towards one side of cluster 2, be provided with the clearance between the battery module of cluster 2, these clearances can be realized through the spacer, install the guide vane between these clearances simultaneously, the clearance can promote the flow of fluid in cluster 2 inside, and improve heat exchange efficiency, the guide vane of installation in the clearance can guide the fluid to flow through cluster 2.
In this embodiment, the rotation of the driving vanes 11 and the installation of the guide vanes ensures that the flow direction and speed of the fluid in the heat exchanger 4 are proper by the rotation of the driving vanes 11, the fluid is guided through the gaps between the battery clusters 2, so that efficient heat exchange operation is realized, and the annular structure of the heat exchanger 4 and the design of the driving vanes 11 allow the insulating coolant 3 to be uniformly cooled.
In an embodiment, a groove is formed in one side of the liquid cooling battery cabinet 1, which is close to the driving blade 11, and extends inwards, the depth of the groove is smaller than the distance between the driving blade 11 and one side of the liquid cooling battery cabinet 1, which is close to the driving blade 11, and the driving motor 12 is placed in the groove, a temperature sensor 15 and a motor control device are arranged on the driving motor 12, and when the temperature of the driving motor 12 reaches a certain threshold value, the temperature sensor 15 transmits a temperature signal to the motor control device, so that the driving motor 12 generates a closing or adjusting gear.
In this embodiment, the side of the liquid cooling battery cabinet 1 near the heat exchanger 4 and the driving blade 11 is recessed towards the inside thereof, the recess is used for placing the driving motor 12, so that the driving blade 11 can have enough power source, and the recess is located at the side of the liquid cooling battery cabinet 1 near the heat exchanger 4 and the driving blade 11, because the heat exchanger 4 and the driving blade 11 are arranged at the side, the battery cluster 2 and the side generate a space interval which cannot be utilized by the battery cluster 2, by using the interval device, the driving motor 12 can improve the integration degree, meanwhile, the extrusion of the energy density of the battery cluster 2 is reduced to the greatest extent, the driving motor 12 is always started in the system running state, when the temperature sensor 15 detects that the temperature of the current driving motor 12 is too high, the temperature signal is transmitted to the motor control device, so that the driving motor 12 generates a closing or adjusting gear, so as to reduce the loss of the driving motor 12, and when the driving motor 12 is restored to a proper temperature interval, the driving motor 12 is restarted.
In an embodiment, a flow rate sensor 17 is disposed at a position in the heat exchange pipeline 8 near the inflow port of the heat exchanger 4, and when the flow rate in the heat exchange pipeline 8 is greater than a certain threshold value, the flow rate sensor 17 transmits flow information to the motor control device, and the motor control device generates power adjustment for the driving motor 12 to enable the driving blades 11 to generate different rotation speeds, so as to adjust the flow rate of the insulating cooling liquid 3 in the liquid cooling battery cabinet 1, and achieve a uniform heat dissipation effect.
In this embodiment, a flow rate sensor 17 is disposed at a position in the heat exchange pipeline 8 near the inflow port of the heat exchanger 4, the flow rate sensor 17 can detect a current flow rate of the refrigerant in the heat exchange pipeline 8, the flow rate of the refrigerant is changed based on a state of the throttle valve 7, when the throttle valve 7 receives an adjusting signal from the temperature sensor 15 in the liquid cooling battery cabinet 1, the valve regulator is controlled to control the flow rate of the throttle valve 7, at this moment, the flow rate in the heat exchange pipeline 8 is adjusted to be larger or smaller along with the temperature, at this moment, the change of the flow rate is sensed by the flow rate sensor 17 in the heat exchange pipeline 8, when the flow rate increases to reach a certain threshold value, it is indicated that the temperature in the current liquid cooling battery cabinet 1 has risen to a certain extent, at this moment, the motor control device will receive flow rate information of the flow rate sensor 17, power is adjusted to the driving motor 12, so that the driving blade 11 generates a larger rotation speed, and a temperature difference between the local insulating cooling liquid 3 of the heat exchanger 4 and other insulating cooling liquid 3 is prevented; secondly, the insulating cooling liquid 3 in the whole liquid cooling battery cabinet 1 can be mobilized to perform uniform heat exchange with the heat exchanger 4, so that the cooling speed is increased; when the flow rate is reduced to reach a certain threshold value, the temperature in the liquid cooling battery cabinet 1 is reduced to a certain degree, at the moment, the motor control device receives the flow rate information of the flow rate sensor 17, and power adjustment is performed on the driving motor 12, so that the driving blade 11 generates a smaller rotating speed, the energy-saving effect is achieved, and unnecessary energy consumption is avoided.
In an embodiment, a quick plug connector is further disposed in the liquid cooling battery cabinet 1, the quick plug connector includes a socket and a plug, the socket is fixedly connected to the inner wall of the bottom side of the liquid cooling battery cabinet 1, one side of the battery cluster 2 is connected with the plug, and the plug is connected with the socket through a locking mechanism.
In this embodiment, the quick plug connector includes a socket and a plug, and the connector design can conveniently connect and disconnect the battery cluster 2, so that the battery cluster 2 does not need to be detached in a complicated manner during replacement or maintenance, and is simpler and more convenient; the socket is fixedly connected to the inner wall of the bottom side of the liquid cooling battery cabinet 1, the socket provides a position for inserting and fixing a plug, the plug is connected with one side of the battery cluster 2, the plug is connected with the socket through a locking mechanism, the locking mechanism can ensure firm connection between the plug and the socket, accidental falling or loosening is prevented, and the socket and the plug can be particularly fastened or screwed and the like, so that the plug and the socket are firmly connected together; the design of the mechanical connection enables more efficient and convenient replacement or maintenance of the mechanical parts, and only requires simple insertion or extraction of the plug, without complex disassembly and assembly processes, which is very convenient for maintenance and management of the liquid-cooled battery cabinet 1.
In an embodiment, a liquid level detection device is installed in the liquid cooling battery cabinet 1, a liquid discharge valve 14 is disposed at the lower side of the liquid cooling battery cabinet 1, the liquid discharge valve 14 is located at one end in the liquid cooling battery cabinet 1, and a filtering device is disposed at the end.
In this embodiment, the liquid-cooled battery cabinet 1 is internally provided with a liquid level detection device, which can be arranged on one side of the inner wall of the liquid-cooled battery cabinet 1, for monitoring the liquid level of the insulating coolant 3 in the battery cabinet, such a device usually adopts a sensor technology, and can accurately measure the liquid level of the insulating coolant 3, the lower side of the liquid-cooled battery cabinet 1 is provided with a liquid discharge valve 14 for discharging and inputting the insulating coolant 3, the liquid discharge valve 14 penetrates and seals the connection, is arranged at the bottom position close to the liquid-cooled battery cabinet 1, by opening the liquid discharge valve 14, the insulating coolant 3 in the liquid-cooled battery cabinet 1 can be discharged after the insulating coolant 3 has been used for a period of time, then a new insulating coolant 3 is infused into the liquid discharge valve 14 by connecting a conveying pipeline, the liquid level in the infusion process is detected by the liquid level detection device, and a prompt is generated when a certain height is reached, and the liquid discharge valve 14 is provided with a filtering device for filtering the input insulating coolant 3, so that impurities, solid particles or other matters possibly existing in the liquid discharge valve 14 can be blocked, and the liquid discharge valve 14 is prevented from being blocked and the impurities entering the inside the liquid-cooled battery cabinet 1.
In an embodiment, the heat exchange pipes 8 include a plurality of heat exchange pipes, and the refrigeration units are respectively and correspondingly connected.
In this embodiment, a plurality of heat exchange pipes 8 may be included, and the connection between the heat exchange pipes 8 may be connected through a valve, so as to adapt to the insulating cooling liquid 3 in the liquid cooling battery cabinet 1 to adjust the scale of the refrigeration unit and the flow of the refrigerant, so that the refrigeration unit is suitable for more application scenarios, and a stronger refrigeration effect is achieved.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (5)
1. A full immersion non-circulating flow liquid cooled battery energy storage thermal management system, comprising:
the liquid cooling battery cabinet is internally provided with a battery cluster, and the battery cluster is immersed by insulating cooling liquid;
the heat exchanger is arranged in the liquid cooling battery cabinet and is immersed by insulating cooling liquid;
the refrigerating unit is connected with an inflow port and an outflow port of the heat exchanger through a heat exchange pipeline and is used for transmitting a refrigerant to perform refrigeration cycle, and a throttle valve is further arranged on the heat exchange pipeline; the liquid cooling battery cabinet is internally provided with a temperature sensor and a pressure sensor, the temperature sensor and the pressure sensor are immersed in the insulating cooling liquid and are used for detecting the temperature and the pressure in the liquid cooling battery cabinet and transmitting detected data to a control system; the throttle valve is provided with a valve controller, wherein when the temperature sensor measures that the temperature generated in the current liquid cooling battery cabinet exceeds a specified threshold value, a temperature signal is transmitted to a control system, then the control system transmits an adjusting signal to the valve controller, and the valve controller adjusts the flow of the refrigerant; the explosion-proof valve is arranged on the upper side of the liquid cooling battery cabinet, an electric actuating mechanism is arranged on the explosion-proof valve, and when the control system judges that the pressure and the temperature in the liquid cooling battery cabinet reach the threshold value required to open the explosion-proof valve, an electric signal is transmitted to the electric actuating mechanism to open the valve;
the heat exchanger is annular, a supporting frame is arranged on the outer wall of the heat exchanger, which is close to the annular hollow part, and is used for being connected with driving blades, and the driving blades rotate through being connected with a driving motor; the blade surfaces of the driving blades face the battery clusters, gaps are arranged between battery modules of the battery clusters, guide vanes are arranged between the gaps, and one side inlet of each gap faces the driving blade;
a groove is formed in one side of the liquid cooling battery cabinet, which is close to the driving blade, and extends inwards, the depth of the groove is smaller than the distance between the driving blade and one side of the liquid cooling battery cabinet, which is close to the driving blade, and the driving motor is arranged in the groove;
when the temperature sensor in the liquid cooling battery cabinet detects that the temperature generated in the current liquid cooling battery cabinet exceeds a specified threshold, the valve controller receives an adjusting signal of the control system, adjusts the flow in the current heat exchange pipeline, and when the flow rate in the heat exchange pipeline is greater than a certain threshold, the flow rate sensor transmits flow information to the motor control device, so that the driving motor generates power for adjustment, the rotating speed of the driving blade is improved, and the temperature difference exceeding a safety threshold between the part of the heat exchanger in the liquid cooling battery cabinet and insulating cooling liquid at other parts in the liquid cooling battery cabinet is prevented; when the flow velocity in the heat exchange pipeline is smaller than a certain threshold value, the motor control device generates power adjustment for the driving motor, so that the rotating speed of the driving blade is reduced, and the energy consumption is saved; different rotating speeds are generated by the driving blades, the flowing speed of insulating cooling liquid in the liquid cooling battery cabinet is adjusted, and the heat dissipation effect is uniform; the temperature sensor and the motor control device are arranged on the driving motor, and when the temperature of the driving motor reaches a certain threshold value, the temperature sensor transmits a temperature signal to the motor control device, so that the driving motor can be turned off or the gear can be regulated.
2. The fully submerged, non-circulating flow, liquid-cooled battery thermal energy storage management system of claim 1, wherein the refrigeration unit comprises a compressor, a condenser, a throttle valve, a three-way valve, and a natural cooling coil, wherein the compressor, the condenser, and the throttle valve are installed in the heat exchange conduit according to a flow direction of the refrigerant;
the first connector and the second connector of the three-way valve are connected with the heat exchange pipeline, the inlet end of the natural cooling coil pipe is connected with the third connector of the three-way valve, and the outlet end of the natural cooling coil pipe is connected with the heat exchange pipeline between the three-way valve and the inflow port.
3. The full immersion non-circulating flow liquid-cooled battery energy storage thermal management system of claim 1, wherein a quick plug connector is further arranged in the liquid-cooled battery cabinet, the quick plug connector comprises a socket and a plug, the socket is fixedly connected to the inner wall of the bottom side of the liquid-cooled battery cabinet, the plug is connected to one side of the battery cluster, and the plug is connected with the socket through a locking mechanism.
4. The full-immersion non-circulating flow liquid-cooled battery energy storage thermal management system according to claim 3, wherein a liquid level detection device is installed in the liquid-cooled battery cabinet, a liquid discharge valve is arranged on the lower side of the liquid-cooled battery cabinet, and a filtering device is arranged at one end of the liquid-cooled battery cabinet, wherein the liquid discharge valve is located in the liquid-cooled battery cabinet.
5. The system of claim 1, wherein the heat exchange pipes comprise a plurality of heat exchange pipes and are respectively and correspondingly connected with the refrigeration unit.
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