Cooling device and energy storage system

Abstract

The utility model relates to the technical field of liquid cooling, and discloses a cooling device and an energy storage system, which comprise a liquid cooling system and a microbubble system, the liquid cooling system comprises a liquid cooling plate, and a liquid flow channel is arranged in the liquid cooling plate; the microbubble system comprises a microbubble generator, and the microbubble generator is located in the liquid cooling plate and arranged at the bottom of the liquid flow channel; according to the utility model, the traditional single-phase flow heat transfer mechanism is changed, the transition from single-phase heat transfer to phase change heat transfer mode accompanied by gasification is realized in a part of areas, the convective heat transfer coefficient is further increased, the heat transfer efficiency is improved, the heat transfer efficiency is improved, and the heat transfer efficiency is improved. And the overall heat transfer efficiency and cooling capacity are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid cooling technology field, concretely relates to cooling device and energy storage system. BACKGROUND

[0002] The heat management of the battery, its main role is to maintain the battery in the appropriate working temperature range, also want to reduce the temperature difference between the battery as much as possible. As an important component of liquid cooling in heat management, the heat transfer efficiency of the liquid cooling plate greatly affects the charge and discharge performance of the battery; the cooling liquid gradually warms up in the flow channel of the liquid cooling plate by heat exchange with the battery to take away a large amount of heat generated by the battery in the charging and discharging process. With the development of battery integration, high-power output and fast charging 3C or 6C, the heat generated by the battery also increases, and the traditional single-phase liquid cooling gradually becomes difficult to maintain the battery in the appropriate temperature range. SUMMARY

[0003] Therefore, the utility model provides a kind of cooling device and energy storage system to solve the problem that traditional single-phase liquid cooling gradually becomes difficult to maintain the battery in the appropriate temperature range with the increase of the heat generated by battery.

[0004] In the first aspect, the utility model provides a kind of cooling device, including liquid cooling system and microbubble system;Liquid cooling system includes liquid cooling plate, and the liquid cooling plate is equipped with liquid flow channel inside;Microbubble system includes microbubble generator, and the microbubble generator is located in the inside of the liquid cooling plate, and is arranged at the bottom of the liquid flow channel;The surface of the microbubble generator is equipped with micropore, and the micropore is used for the generation of microbubble.

[0005] Beneficial effect: by the bottom of the liquid flow channel in the liquid cooling plate setting microbubble generator, a large number of microbubbles are used as the gasification core of cooling liquid, in the process of continuous generation and upward migration of microbubble, as dynamic disturbance source, impact is generated on the top of fluid flow channel (i.e. heated surface), also disturb the originally stable thermal boundary layer, make the traditional single-phase flow heat transfer mechanism change, part area realizes the transition from single-phase heat transfer to phase change heat transfer mode with gasification, and then the convective heat transfer coefficient is increased, and the overall heat transfer efficiency and cooling capacity are enhanced;It can more effectively absorb and disperse heat from heat source, and the thermal resistance of cooling system is significantly reduced;In addition, due to the generation of microbubble and the dynamic disturbance effect caused in fluid medium, the static boundary layer in the traditional heat transfer process is broken, the local thermal resistance is reduced, the temperature difference of each region on the surface of the liquid cooling plate is significantly reduced, and the uniformity of the temperature distribution on the surface of the liquid cooling plate is significantly improved, so that the temperature consistency of the surface of the liquid cooling plate is more excellent.

[0006] In an alternative embodiment, the microbubble generator is spaced apart from the bottom surface of the liquid flow channel; the liquid cooling plate is provided with a first communication port and a second communication port; the first communication port is in communication with the liquid flow channel and is arranged below the microbubble generator for supplying gas into the liquid flow channel; and the second communication port is in communication with the liquid flow channel and is arranged above the microbubble generator for discharging gas in the liquid flow channel.

[0007] Beneficial effects: The first communication port is arranged below the microbubble generator, which ensures that the gas enters the liquid cooling plate through the first communication port, and then the gas naturally rises under the action of buoyancy and passes through the microbubble generator to generate bubbles; and since the second communication port is arranged above the microbubble generator, the gas flow path is optimized, and it is also ensured that all the gas treated by the microbubble generator can smoothly pass through the second communication port and be discharged from the liquid cooling plate, thereby ensuring the full use of the gas entering the liquid cooling plate.

[0008] In an alternative embodiment, the liquid cooling plate is provided with a liquid inlet nozzle and a liquid outlet nozzle, the liquid inlet nozzle is in communication with the first communication port, and the liquid outlet nozzle is in communication with the second communication port; the liquid cooling system further comprises a heat exchanger, the liquid inlet nozzle is connected to the output port of the heat exchanger through a liquid inlet pipeline; and the liquid outlet nozzle is connected to the input port of the heat exchanger through a liquid outlet pipeline.

[0009] Beneficial effects: Through the arrangement of the liquid inlet pipeline and the liquid outlet pipeline, the circulation of the cooling liquid between the heat exchanger and the liquid cooling plate is realized, which promotes the efficient transfer and dissipation of heat, improves the heat exchange efficiency, and ensures that the liquid cooling plate can effectively absorb and remove the heat generated by the device to be cooled, thereby maintaining the device to be cooled within a safe and stable temperature range.

[0010] In an alternative embodiment, the liquid inlet nozzle is provided with a gas inlet port, the gas inlet port is in communication with the first communication port; and the microbubble system further comprises a gas pump, the gas pump is in communication with the gas inlet port through a gas inlet pipeline.

[0011] Beneficial effects: The arrangement of the gas pump ensures stable and continuous supply of gas to the microbubble generator; and the gas inlet port arranged on the liquid inlet nozzle ensures that the gas enters the interior of the liquid cooling plate through the first communication port.

[0012] In an alternative embodiment, the microbubble system further comprises a gas flow regulating valve, the gas flow regulating valve is arranged on the gas inlet pipeline.

[0013] Beneficial effects: through the setting of the gas flow regulating valve, the gas flow entering the micro-bubble generator can be dynamically adjusted according to the feedback signal of real-time temperature monitoring of the device to be cooled, ensuring accurate control of the amount of micro-bubbles generated per unit time, thereby optimizing the gas utilization efficiency.

[0014] In an alternative embodiment, the micro-bubble system further comprises a gas-liquid separator, the gas-liquid separator is provided with an inlet and an outlet, the inlet is arranged at the upper part of the gas-liquid separator, and the outlet is arranged at the bottom of the gas-liquid separator; the liquid outlet nozzle is provided with a gas outlet, the gas outlet is communicated with the inlet through a gas outlet pipeline; the outlet is connected with the heat exchanger through a liquid return pipeline.

[0015] Beneficial effects: through the setting of the gas-liquid separator, the cooling liquid, gas and a small amount of cooling liquid entrained in the liquid cooling plate body that undergoes phase change can flow out of the gas outlet of the liquid outlet nozzle into the gas-liquid separator, and the separation of the cooling liquid and the gas is realized in the gas-liquid separator; and since the gas-liquid separator is connected with the heat exchanger through the liquid return pipeline, the liquid in the gas-liquid separator is effectively recycled.

[0016] In an alternative embodiment, the gas-liquid separator is further provided with an exhaust port, and the exhaust port is arranged above the inlet.

[0017] Beneficial effects: by setting the exhaust port on the gas-liquid separator, the gas accumulated in the gas-liquid separator is effectively discharged, ensuring that the gas generated in the gas-liquid separation process can be quickly and smoothly guided out through the exhaust port, thereby avoiding pressure accumulation or separation efficiency reduction caused by gas retention, and ensuring efficient and complete separation of gas and liquid.

[0018] In an alternative embodiment, the micro-bubble system further comprises an exhaust pipe, the exhaust pipe is connected with the gas pump and the exhaust port.

[0019] Beneficial effects: by connecting the gas pump with the exhaust port through the exhaust pipe, the recycling of the gas is realized, the utilization rate and recycling efficiency of the gas resource are improved, the continuity and stability of the cooling process are ensured, and the waste and emission of the gas are reduced.

[0020] In an alternative embodiment, the exhaust pipe is provided with a dryer, and the dryer is arranged at one end of the exhaust pipe close to the gas pump.

[0021] Beneficial effects: By setting the dryer on the exhaust pipe, ensure that the gas entering the gas pump is in a completely dry state, prevent the potential damage of the gas pump caused by the trace amount of liquid that may be entrained in the circulating process, improve the operation safety and reliability of the gas pump, prolong the service life of the gas pump, and also optimize the overall operation efficiency of the device, reduce the maintenance cost and downtime caused by liquid intrusion.

[0022] In the second aspect, the utility model also provides a kind of energy storage system, comprising the cooling device described above.

[0023] Because energy storage system includes the cooling device described above, with the same effect of the cooling device described above, not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0024] To more clearly illustrate the specific embodiment of the utility model or the technical scheme in related art, the drawings needed in the specific embodiment or related technical description will be simply introduced as follows, and it is obvious that the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor according to these drawings.

[0025] Figure 1 for the structure diagram of the cooling device of the utility model embodiment;

[0026] Figure 2 for the structure diagram of the liquid cooling plate of the utility model embodiment;

[0027] Figure 3 for the local structure diagram of the liquid cooling plate of the utility model embodiment;

[0028] Figure 4 for the structure diagram of the micro-bubble generator of the utility model embodiment.

[0029] EXPLANATION OF REFERENCE NUMERALS:

[0030] 11, liquid cooling plate;111, liquid flow channel;112, liquid inlet nozzle;113, liquid outlet nozzle;12, heat exchanger;13, liquid outlet pipeline;14, liquid inlet pipeline;15, cooling liquid pump;21, micro-bubble generator;22, gas pump;23, gas inlet pipeline;24, gas flow regulating valve;25, gas-liquid separator;251, safety valve;26, gas outlet pipeline;27, liquid return pipeline;271, liquid return valve;28, exhaust pipe;29, exhaust valve. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] The embodiments of the utility model will be described below in conjunction with Figures 1 to 4

[0033] According to the embodiments of the utility model, on the one hand, a cooling device is provided, which comprises a liquid cooling system and a micro-bubble system; the liquid cooling system comprises a liquid cooling plate 11, and a liquid flow channel 111 is arranged inside the liquid cooling plate 11; the micro-bubble system comprises a micro-bubble generator 21, and the micro-bubble generator 21 is located inside the liquid cooling plate 11 and arranged at the bottom of the liquid flow channel 111; a micro-hole is arranged on the surface of the micro-bubble generator 21, and the micro-hole is used for generating micro-bubbles.

[0034] The micro-bubble generator 21 is arranged at the bottom of the liquid flow channel 111 in the liquid cooling plate 11, a large number of micro-bubbles are used as the gasification core of the cooling liquid, in the process of continuous generation and upward migration of the micro-bubbles, the micro-bubbles impact the top of the fluid flow channel (i.e. the heated surface) as a dynamic disturbance source, and also disturb the originally stable thermal boundary layer, so that the traditional single-phase flow heat transfer mechanism is changed, the transition from single-phase heat transfer to phase-change heat transfer mode accompanied by gasification is realized in some areas, and then the convective heat transfer coefficient is increased, and the overall heat transfer efficiency and cooling capacity are enhanced; heat can be more effectively absorbed and dispersed from the heat source, and the thermal resistance of the cooling system is significantly reduced; in addition, due to the generation of micro-bubbles and the dynamic disturbance effect caused in the fluid medium, the static boundary layer in the traditional heat transfer process is broken, the local thermal resistance is reduced, the temperature difference of each area on the surface of the liquid cooling plate 11 is significantly reduced, the uniformity of the temperature distribution on the surface of the liquid cooling plate 11 is significantly improved, and the temperature consistency on the surface of the liquid cooling plate 11 is more excellent.

[0035] In a specific embodiment, the micro-bubble generator 21 can be aeration stone sintered by silica gel, plastic, metal and stainless steel.

[0036] In one embodiment of the present embodiment, the micro-bubble generator 21 can be a silica gel pipe made of silica gel material, the size of the silica gel pipe is easy to adjust and the cost is relatively low, the shape of the silica gel pipe can be square or circular, etc., and the number of micro-holes is adjusted according to a specific heat management scheme. In another embodiment of the present embodiment, the micro-bubble generator 21 is aeration stone, and the aeration stone can have a micron-level pore diameter, such as 1-10 microns, and the heat transfer enhancement effect is better.​

[0037] Specifically, the micro-bubble generator 21 is arranged spaced apart from the bottom surface of the liquid flow channel 111; the liquid cooling plate 11 is provided with a first communication port and a second communication port; the first communication port is in communication with the liquid flow channel 111 and is arranged below the micro-bubble generator 21, for supplying gas into the liquid flow channel 111; the second communication port is in communication with the liquid flow channel 111 and is arranged above the micro-bubble generator 21, for discharging gas in the liquid flow channel 111.

[0038] The micro-bubble generator 21 is arranged spaced apart from the bottom surface of the liquid flow channel 111. In one possible implementation, as shown in FIG. 1, the micro-bubble generator 21 is arranged in a plate shape and is uniformly laid in the interior of the liquid flow channel 111, so as to ensure that all the cooling liquid flowing through the liquid flow channel 111 can effectively pass through the micro-bubble generator 21. In another possible implementation, the micro-bubble generator 21 is selectively installed in a specific area or a local position of the liquid flow channel 111 according to actual needs, and specifically, the position of the micro-bubble generator 21 can be accurately adjusted and optimized according to actual working conditions, cooling needs or space limitations and the like. Figure 3 The micro-bubble generator 21 is arranged spaced apart from the bottom surface of the liquid flow channel 111. In one possible implementation, as shown in FIG. 1, the micro-bubble generator 21 is arranged in a plate shape and is uniformly laid in the interior of the liquid flow channel 111, so as to ensure that all the cooling liquid flowing through the liquid flow channel 111 can effectively pass through the micro-bubble generator 21. In another possible implementation, the micro-bubble generator 21 is selectively installed in a specific area or a local position of the liquid flow channel 111 according to actual needs, and specifically, the position of the micro-bubble generator 21 can be accurately adjusted and optimized according to actual working conditions, cooling needs or space limitations and the like.

[0039] The first communication port is arranged below the micro-bubble generator 21, so as to ensure that the gas enters the liquid cooling plate 11 through the first communication port, and then the gas naturally rises under the action of buoyancy and passes through the micro-bubble generator 21 to generate bubbles; and since the second communication port is arranged above the micro-bubble generator 21, the gas flow path is optimized, and it is also ensured that all the gas processed by the micro-bubble generator 21 can smoothly pass through the second communication port and be discharged from the liquid cooling plate 11, so as to ensure full use of the gas entering the liquid cooling plate 11.

[0040] In one embodiment, the liquid cooling plate 11 is provided with an inlet water nozzle 112 and an outlet water nozzle 113, the inlet water nozzle 112 is in communication with the first communication port, and the outlet water nozzle 113 is in communication with the second communication port; the liquid cooling system further comprises a heat exchanger 12, the inlet water nozzle 112 is connected with an output port of the heat exchanger 12 through an inlet pipeline 14, and the outlet water nozzle 113 is connected with an input port of the heat exchanger 12 through an outlet pipeline 13.

[0041] Through the arrangement of the inlet pipeline 14 and the outlet pipeline 13, the circulation flow of the cooling liquid between the heat exchanger 12 and the liquid cooling plate 11 is realized, the efficient transfer and dissipation of heat are promoted, the heat exchange efficiency is improved, and it is ensured that the liquid cooling plate 11 can effectively absorb and take away the heat generated by the device to be cooled, so as to maintain the device to be cooled in a safe and stable temperature range.

[0042] In one embodiment, the liquid inlet nozzle 112 is provided with an air inlet, which is in communication with the first communication port; the micro-bubble system further comprises an air pump 22, which is in communication with the air inlet through an air inlet pipeline 23.

[0043] The air pump 22 is provided to ensure stable and continuous supply of gas to the micro-bubble generator 21; and the air inlet is provided on the liquid inlet nozzle 112 to ensure that the gas enters the interior of the liquid cooling plate 11 through the first communication port.

[0044] Specifically, the liquid inlet nozzle 112 and the liquid outlet nozzle 113 are both protrudingly arranged on the outer wall of the liquid cooling plate 11.

[0045] In a specific embodiment, the air pump 22 serves as the gas source of the micro-bubble generator 21, and provides non-condensable gas. Specifically, the non-condensable gas can be nitrogen, air, etc.

[0046] In a specific embodiment, the air inlet pipeline 23 is connected to the air inlet of the liquid inlet nozzle 112 through an air inlet quick connector. The air inlet quick connector is used for quick installation of the air inlet pipeline 23, and the sealing at the air inlet quick connector should ensure that the leakage of gas and coolant is within the allowable range.

[0047] In one embodiment, the micro-bubble further comprises a gas flow regulating valve 24, which is arranged on the air inlet pipeline 23; the gas flow regulating valve 24 is adapted to be connected to the control module of the device to be cooled, the control module receives the temperature data of the device to be cooled, and adjusts the valve opening of the gas flow regulating valve 24 according to the temperature data.

[0048] Through the provision of the gas flow regulating valve 24, the gas flow entering the micro-bubble generator 21 can be dynamically adjusted according to the feedback signal of real-time temperature monitoring of the device to be cooled, ensuring accurate control of the amount of micro-bubbles generated per unit time, thereby optimizing the gas utilization efficiency.

[0049] In a specific embodiment, the device to be cooled can be a battery module or a battery pack. The control module of the device to be cooled can be a battery management system.

[0050] In a specific embodiment, the liquid cooling plate 11 can be arranged at the bottom of the device to be cooled, or at the side of the device to be cooled.

[0051] In a specific embodiment, the liquid inlet pipeline 14 is provided with a coolant pump 15.

[0052] In one embodiment, the microbubble system further comprises a gas-liquid separator 25, which is provided with an inlet and an outlet, the inlet is arranged at the upper portion of the gas-liquid separator 25, and the outlet is arranged at the bottom of the gas-liquid separator 25; the liquid outlet nozzle 113 is provided with a gas outlet, which is communicated with the inlet through a gas outlet pipeline 26; and the outlet is connected with the heat exchanger 12 through a liquid return pipeline 27.

[0053] By arranging the gas-liquid separator 25, the gas in the main body of the liquid cooling plate 11 and the trace amount of cooling liquid droplets possibly entrained therefrom can flow out of the gas outlet of the liquid outlet nozzle 113 into the gas-liquid separator 25, and the separation of the cooling liquid and the gas is realized in the gas-liquid separator 25. Since the gas-liquid separator 25 is connected with the heat exchanger 12 through the liquid return pipeline 27, the effective recycling of the liquid in the gas-liquid separator 25 is realized.

[0054] In a specific embodiment, the liquid return pipeline is provided with a liquid return valve 271.

[0055] In one embodiment, the gas-liquid separator 25 is further provided with an exhaust port, which is arranged above the inlet. For example, the exhaust port is arranged at the top of the gas-liquid separator 25.

[0056] By arranging the exhaust port on the gas-liquid separator 25, the effective exhaust of the gas accumulated in the gas-liquid separator 25 is realized, which ensures that the gas generated in the gas-liquid separation process can be quickly and smoothly guided out through the exhaust port, thereby avoiding the pressure accumulation or separation efficiency reduction caused by the gas retention, and ensuring the efficient and thorough separation of the gas and the liquid.

[0057] In one embodiment, the microbubble system further comprises an exhaust pipe 28, which is connected with the gas pump 22 and the exhaust port.

[0058] By arranging the exhaust pipe 28 to connect the gas pump 22 with the exhaust port, the recycling use of the gas is realized, which improves the utilization rate and recycling efficiency of the gas resource, ensures the continuity and stability of the cooling process, and reduces the waste and emission of the gas.

[0059] In one embodiment, the exhaust pipe 28 is provided with a dryer, which is arranged at the end of the exhaust pipe 28 close to the gas pump 22.

[0060] By setting the dryer on the exhaust pipe 28, it is ensured that the gas entering the gas pump 22 is in a completely dry state, preventing potential damage to the gas pump 22 caused by the trace amount of liquid that the gas may carry during circulation, improving the operation safety and reliability of the gas pump 22, prolonging the service life of the gas pump 22, and also optimizing the overall operation efficiency of the device, reducing maintenance costs and downtime caused by liquid intrusion.

[0061] In one embodiment, the exhaust pipe 28 is provided with an exhaust valve 29, which is located between the gas-liquid separator 25 and the dryer.

[0062] By setting the exhaust valve 29, the gas in the exhaust pipe 28 is effectively discharged in time, ensuring that the gas can smoothly enter the dryer for further dehumidification treatment after completing the preliminary separation in the gas-liquid separator 25; and when the pressure in the gas-liquid separator 25 is reduced below the set value, the exhaust valve 29 will automatically close, avoiding excessive discharge of gas and ensuring the stability of the gas circulation system.

[0063] In one embodiment, the gas-liquid separator 25 is also provided with a safety valve 251, which is arranged at the top of the gas-liquid separator 25.

[0064] By setting the safety valve 251 on the gas-liquid separator 25, effective monitoring and overpressure protection of the internal pressure of the gas-liquid separator 25 are achieved, which can quickly and automatically open and release excess pressure when the internal pressure of the gas-liquid separator 25 abnormally rises and exceeds the preset safety threshold, thereby effectively preventing safety accidents such as equipment damage, leakage, and even explosion caused by excessive pressure, greatly improving the operation safety of the gas-liquid separator 25 and the entire system.

[0065] In a specific embodiment, the cooling liquid sequentially passes through the liquid inlet pipe 14 and the liquid inlet nozzle 112 into the liquid flow channel 111 of the liquid cooling plate 11 in the heat exchanger 12, and then the heated cooling liquid in the liquid flow channel 111 sequentially passes through the liquid outlet nozzle 113 and the liquid outlet pipe 13 to return to the heat exchanger 12 again.

[0066] In a specific embodiment, the gas is sequentially introduced into the liquid flow channel 111 of the liquid cooling plate 11 by the gas pump 22 through the gas inlet pipe 23 and the gas inlet of the liquid inlet nozzle 112, then rises through the micro-bubble generator 21 under the action of buoyancy, forms bubbles under the action of the micro-bubble generator 21, and then sequentially passes through the gas outlet of the liquid outlet nozzle 113 and the gas outlet pipe 26 to enter the gas-liquid separator 25; the liquid entering the gas-liquid separator 25 enters the heat exchanger 12 through the liquid return pipe 27; the gas entering the gas-liquid separator 25 sequentially passes through the gas outlet and the exhaust pipe 28 and is discharged. Specifically, the exhaust pipe 28 can also be connected with the gas pump 22, and the gas entering the gas-liquid separator 25 enters the gas pump 22 through the exhaust pipe 28 for recycling.

[0067] According to the embodiments of the utility model, on the other hand, a kind of energy storage system is also provided, comprising the cooling device described above.

[0068] Although the embodiments of the utility model are described in conjunction with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cooling device, characterized in that, include: The liquid cooling system includes a liquid cooling plate (11), wherein the liquid cooling plate (11) is provided with a liquid flow channel (111); The microbubble system includes a microbubble generator (21), which is located inside the liquid cooling plate (11) and disposed at the bottom of the liquid flow channel (111); the surface of the microbubble generator (21) is provided with micropores, which are used for the generation of microbubbles.

2. The cooling device according to claim 1, characterized in that, The microbubble generator (21) is spaced apart from the bottom surface of the liquid flow channel (111); the liquid cooling plate (11) is provided with a first connecting port and a second connecting port; the first connecting port is connected to the liquid flow channel (111) and is located below the microbubble generator (21) for supplying gas into the liquid flow channel (111); the second connecting port is connected to the liquid flow channel (111) and is located above the microbubble generator (21) for discharging gas from the liquid flow channel (111).

3. The cooling device according to claim 2, characterized in that, The liquid cooling plate (11) is provided with a liquid inlet nozzle (112) and a liquid outlet nozzle (113). The liquid inlet nozzle (112) is connected to the first communication port, and the liquid outlet nozzle (113) is connected to the second communication port. The liquid cooling system also includes a heat exchanger (12), and the inlet water nozzle (112) is connected to the output port of the heat exchanger (12) through the inlet pipe (14); the outlet water nozzle (113) is connected to the input port of the heat exchanger (12) through the outlet pipe (13).

4. The cooling device according to claim 3, characterized in that, The liquid inlet nozzle (112) is provided with an air inlet, which is connected to the first communication port; The microbubble system also includes an air pump (22), which is connected to the air inlet via an air inlet pipe (23).

5. The cooling device according to claim 4, characterized in that, The microbubble system also includes a gas flow regulating valve (24), which is disposed on the air inlet pipe (23).

6. The cooling device according to claim 4, characterized in that, The microbubble system also includes a gas-liquid separator (25), which has an inlet and an outlet. The inlet is located at the upper part of the gas-liquid separator (25), and the outlet is located at the bottom of the gas-liquid separator (25). The liquid outlet nozzle (113) is provided with an air outlet, which is connected to the inlet through an air outlet pipe (26); the outlet is connected to the heat exchanger (12) through a liquid return pipe (27).

7. The cooling device according to claim 6, characterized in that, The gas-liquid separator (25) is also provided with an exhaust port, which is located above the inlet.

8. The cooling device according to claim 7, characterized in that, The microbubble system also includes an exhaust pipe (28) connected to the air pump (22) and the exhaust port.

9. The cooling device according to claim 8, characterized in that, A dryer is provided on the exhaust pipe (28), and the dryer is located at one end of the exhaust pipe (28) near the air pump (22).

10. An energy storage system, characterized in that, The cooling device includes any one of claims 1 to 9.

Images