Liquid cooling energy storage system

Abstract

The utility model relates to the technical field of energy storage power station cooling, in particular to a liquid cooling energy storage system. The utility model provides a liquid cooling energy storage system which comprises a plurality of energy storage assemblies and a plurality of cooling assemblies, each energy storage assembly is provided with at least one cooling assembly, the cooling assembly is arranged on one side of the energy storage assembly, the cooling assembly comprises a liquid cooling machine and an air outlet assembly, and the air outlet assembly comprises a first bin body. One side of the first bin body is connected with an air outlet of the liquid cooling machine, a plurality of fans are stacked in the middle of the first bin body, and the fans exhaust airflow from the liquid cooling machine to improve the heat island effect of the liquid cooling energy storage system. An air outlet assembly is arranged on one side of the liquid cooling machine, and the air outlet assembly can discharge the high-temperature gas from the liquid cooling machine to the position above the container environment after further heat exchange, so that the cooling airflow settles downwards to improve the heat island effect of the liquid cooling energy storage system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage power station cooling, in particular to a liquid-cooled energy storage system. BACKGROUND

[0002] In recent years, with the rapid development of the energy storage industry, energy storage systems have developed in the direction of large-scale and liquid cooling. The energy storage system greatly improves the integration of the energy storage system itself, thereby improving the space utilization of the energy storage system. However, the heat dissipation space requirement of the liquid cooling unit itself requires a larger distance between the energy storage systems, which limits the space utilization of the energy storage power station.

[0003] In order to reduce the influence of high-temperature exhaust gas on the inlet temperature of adjacent units and the overall power station ambient temperature, the existing liquid-cooled energy storage system power station needs to reserve sufficient space between the liquid-cooled energy storage systems. At present, a distance of more than 3 meters is generally taken.

[0004] However, this arrangement scheme will result in a decrease in the overall power station layout efficiency and insufficient overall space utilization of the power station. CONTENT OF THE INVENTION

[0005] In order to solve the problems involved in the above background art and achieve the purpose of improving space utilization and improving the heat island effect of the energy storage system, the present application provides a liquid-cooled energy storage system, which comprises a plurality of energy storage assemblies and a plurality of cooling assemblies. Each energy storage assembly is configured with at least one cooling assembly. The cooling assembly is arranged on one side of the energy storage assembly. The cooling assembly comprises a liquid cooling unit and an air outlet assembly. The air outlet assembly comprises a first warehouse body. One side of the first warehouse body is connected with the air outlet of the liquid cooling unit. A plurality of fans are stacked in the middle of the first warehouse body. The fans discharge the airflow from the liquid cooling unit to improve the heat island effect of the liquid-cooled energy storage system.

[0006] It should be noted that the energy storage assembly involved in the present application is mainly used to receive the energy of the release battery system. The cooling assembly on one side can release the heat generated by the energy storage assembly to the environment. In order to realize the heat exchange of the energy storage assembly, low-temperature gas in the environment is introduced into the liquid cooling unit through the air inlet of the cooling assembly, and high-temperature gas is discharged through the air outlet of the liquid cooling unit after heat exchange. Since the entire energy storage system is installed in a container environment, the temperature in the container is increased due to the discharge of high-temperature gas, and the inlet temperature of the liquid cooling unit is increased, thereby reducing the heat exchange efficiency of the liquid cooling unit.

[0007] In order to reduce the influence of high-temperature exhaust gas on the air inlet temperature of the adjacent liquid cooling machine and the overall power station ring temperature, the existing liquid cooling energy storage system power station needs to keep enough spacing between the liquid cooling energy storage systems, and the spacing is generally more than 3 meters at present. However, this arrangement scheme leads to insufficient overall space utilization, and therefore an air outlet assembly is arranged on one side of the liquid cooling machine. The air outlet assembly can further exchange heat from the high-temperature gas from the liquid cooling machine and discharge it to a position above the container environment, so that the cooling airflow sinks downward to improve the heat island effect of the liquid cooling energy storage system.

[0008] According to an embodiment provided by the present application, the first bin body is a frame structure formed by combining a plurality of pipe bodies. The first bin body is provided with a partition plate on the side close to the air outlet of the liquid cooling machine. The partition plate is provided with a filter screen for filtering the airflow from the liquid cooling machine.

[0009] It should be noted that the air outlet assembly has a structure in which a plurality of bin bodies are stacked. The upper wall surfaces of the first bin body and the second bin body are connected. The outer wall part of the first bin body is combined by four square tubes. The top parts of the square tubes are jointly connected to a top plate. The partition plates are arranged between the square tubes. A plurality of fans are arranged at the intermediate positions in the space surrounded by the square tubes, the top plate, and the second bin body. The plurality of fans are stacked and arranged to avoid interference between the fans and the air outlet path. The middle parts of the partition plates are provided with filter screens for filtering the high-temperature gas from the liquid cooling machine.

[0010] According to an embodiment provided by the present application, the plurality of fans are stacked and arranged in the square frame. The fans are separated by the plate body. The square frame is surrounded by the filter screen on the outside.

[0011] It should be noted that the fans are arranged in the square frames, and the square frames are also surrounded by the filter screen on the outside. Since the airflow blown by the fan is located above the entire liquid cooling energy storage system, the filter screen can block the solid impurities in the airflow to reduce the solid impurities in the airflow blown by the fan and reduce the possibility of accumulation of the solid impurities on the liquid cooling energy storage system affecting heat dissipation.

[0012] According to an embodiment provided by the present application, the spacing between the fan and the partition plate is h1, and h1 satisfies: h1>0.7m.

[0013] It should be noted that since the air outlet duct of the liquid cooling machine is close to the partition plate and the partition plate is thin, the air outlet duct of the liquid cooling machine needs to maintain a spacing of more than 0.7m from the fan to avoid the situation that the air outlet volume of the liquid cooling machine is attenuated due to the addition of the fan.

[0014] According to an embodiment provided by the present application, the air outlet assembly further includes a second bin body. One end of the second bin body is connected to the first bin body. The end of the second bin body away from the first bin body is provided with a symmetric fixed plate.

[0015] According to an embodiment provided by the present application, the fixed plate is provided with symmetrically arranged arc-shaped holes, which cooperate with the side surface of the energy storage assembly to fix the position of the air outlet assembly.

[0016] It should be noted that the second bin body is arranged below the first bin body, and the outer side of the second bin body is a frame structure composed of a plurality of square tubes extending from the first bin body. One of the square tubes is provided with at least three metal hinges, and the other side of the metal hinges is connected with a door plate for facilitating opening and closing. In addition, the square tube further extends to the lower end portion of the second bin body, and a fixed plate is arranged between the two square tubes. The fixed plate is in the same orientation as the fan, and the fixed plate is provided with two arc-shaped holes. The outer part of the energy storage assembly or the liquid cooling machine can be provided with a connecting rod and other components matched therewith to cooperate with the fixed plate to improve the stability of the connection and the accuracy of the positioning.

[0017] According to an embodiment provided by the present application, the height of the second bin body is greater than half the height of the energy storage assembly, so as to ensure that the air outlet of the fan is located at the upper half of the energy storage assembly. A motor is arranged in the second bin body, and the motor controls the fan.

[0018] It should be noted that the height of the second bin body needs to be higher than half the overall height of the energy storage assembly, so that the positions of all the fans are arranged in the upper half of the energy storage assembly. By arranging the fan in the upper half of the energy storage assembly, the high-temperature gas of the liquid cooling machine air outlet is guided to the top of the liquid cooling energy storage system. The characteristics of the liquid cooling machine air outlet wind speed and the upward flow of high-temperature gas are fully utilized, the influence of the liquid cooling machine blowing high-temperature gas on the heat exchange performance of the adjacent liquid cooling machine is avoided, and the heat island effect of the energy storage system is further improved.

[0019] According to an embodiment provided by the present application, at least two energy storage assemblies and cooling assemblies form a group, and different cooling assemblies in the group are arranged in parallel and oppositely on the inner side of the energy storage assembly.

[0020] According to an embodiment provided by the present application, the thickness of the cooling assembly is half the thickness of the energy storage assembly.

[0021] It should be noted that the drawings provided by the present embodiment are provided with two groups of energy storage assemblies and cooling assemblies, each group including a pair of energy storage assemblies and cooling assemblies. The cooling assemblies are arranged on the inner side in the length direction of the energy storage assemblies, and the cooling assemblies are arranged oppositely and in parallel, and do not overlap or intersect with each other. Since the scheme newly installs the air outlet assembly part on the basis of the original liquid cooling machine, on the one hand, a space channel for the air inlet and outlet of the fan needs to be reserved, and on the other hand, the problem of liquid cooling machine air outlet attenuation needs to be avoided. Therefore, the overall thickness of the cooling assembly is designed to be half the thickness of the energy storage assembly, thereby further saving the space of the entire liquid cooling energy storage system and improving the space utilization efficiency.

[0022] According to an embodiment provided by the application, the lateral spacing between different energy storage assemblies in the group is h2, and h2 satisfies: h2>1m.

[0023] It should be noted that, due to the addition of the new air outlet air duct, i.e., the air outlet assembly, the original spacing of more than 3m between the energy storage assemblies of the liquid-cooled energy storage system can be reduced to the range of 1m. However, in order not to affect the air volume of the liquid cooler and avoid the air volume of the fans affecting each other, the distance h2 between the energy storage assemblies in the same group needs to be set as h2>1m, so as to ensure that the heat island effect of the liquid-cooled energy storage system can be improved, and the space utilization of the system can be increased.

[0024] The application provides a liquid-cooled energy storage system, which comprises a plurality of energy storage assemblies and a plurality of cooling assemblies, each energy storage assembly is configured with at least one cooling assembly, the cooling assembly is arranged on one side of the energy storage assembly, the cooling assembly comprises a liquid cooler and an air outlet assembly, the air outlet assembly comprises a first warehouse body, one side of the first warehouse body is connected with an air outlet of the liquid cooler, a plurality of fans are stacked in the middle of the first warehouse body, and the fans discharge the airflow from the liquid cooler to improve the heat island effect of the liquid-cooled energy storage system. The air outlet assembly is arranged on one side of the liquid cooler, the air outlet assembly can discharge the high-temperature gas from the liquid cooler to a position above the container environment after further heat exchange, so that the cooling airflow is downwardly settled to improve the heat island effect of the liquid-cooled energy storage system. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative labor under the premise of the drawings.

[0026] Figure 1 The structural schematic diagram of the overall layout of the liquid-cooled energy storage system provided by the embodiments of the application;

[0027] Figure 2 The local structural schematic diagram of the connection between the single energy storage system and the air outlet assembly provided by the embodiments of the application;

[0028] Figure 3 The structural schematic diagram of the air outlet assembly provided by the embodiments of the application.

[0029] Explanation of reference signs:

[0030] 100 - energy storage assembly; 200 - cooling assembly; 210 - liquid cooling machine; 220 - air outlet assembly; 221 - first bin body; 222 - fan; 223 - partition; 224 - second bin body; 225 - fixed plate.

[0031] The specific embodiments of the present application have been shown and described in the above drawings and text, and will be described in more detail below. These drawings and text are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.

[0034] Secondly, it should be noted that in the description of the present application, the terms "front", "back", "left", "right", "up", "down", "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be the communication between the two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] In recent years, with the rapid development of the energy storage industry, energy storage systems are developing in the direction of large-scale and liquid cooling. The energy storage system greatly improves the integration level of the energy storage system itself, and in turn improves the space utilization rate of the energy storage system. However, the heat dissipation space requirement of the liquid cooling unit itself requires a larger spacing between the energy storage systems, which limits the space utilization rate of the energy storage power station.

[0038] In order to reduce the influence of high-temperature exhaust gas on the inlet temperature of adjacent units and the overall power station ambient temperature, the existing liquid-cooled energy storage system power station needs to reserve sufficient spacing between the liquid-cooled energy storage systems. At present, a spacing of more than 3 meters is generally taken.

[0039] However, this arrangement scheme will result in a decrease in the overall power station arrangement efficiency and insufficient overall space utilization rate of the power station.

[0040] Figure 1 A structural schematic diagram of the overall layout of the liquid-cooled energy storage system provided by the embodiments of the present application is shown in the figure; Figure 2 A partial structural schematic diagram of the connection of a single energy storage system and an air outlet assembly provided by the embodiments of the present application is shown in the figure; Figure 3 A structural schematic diagram of the air outlet assembly provided by the embodiments of the present application is shown in the figure.

[0041] As shown in Figure 1 , Figure 2 , Figure 3 The present application provides a liquid-cooled energy storage system, which comprises a plurality of energy storage assemblies 100 and a plurality of cooling assemblies 200. Each energy storage assembly 100 is configured with at least one cooling assembly 200. The cooling assembly 200 is arranged on one side of the energy storage assembly 100. The cooling assembly 200 comprises a liquid-cooled unit 210 and an air outlet assembly 220. The air outlet assembly 220 comprises a first warehouse body 221. One side of the first warehouse body 221 is connected with the air outlet of the liquid-cooled unit 210. A plurality of fans 222 are arranged in the middle of the first warehouse body 221. The fans 222 discharge the airflow from the liquid-cooled unit 210 to improve the heat island effect of the liquid-cooled energy storage system.

[0042] It should be noted that the energy storage assembly 100 involved in the present application is mainly used to receive the energy released by the battery system, and the cooling assembly 200 on one side can release the heat generated by the energy storage assembly 100 to the environment. In order to realize the heat exchange of the energy storage assembly 100, the low-temperature gas in the environment is introduced into the liquid cooling machine 210 through the air inlet of the cooling assembly 200, and the high-temperature gas is discharged through the air outlet of the liquid cooling machine 210 after heat exchange. Since the entire energy storage system is installed in a container environment, the discharge of high-temperature gas leads to an increase in the temperature of the container, and the temperature of the air inlet of the liquid cooling machine 210 is increased, thereby reducing the heat exchange efficiency of the liquid cooling machine 210.

[0043] In order to reduce the influence of the exhaust high-temperature gas on the air inlet temperature of the adjacent liquid cooling machine 210 and the influence on the overall power station ring temperature, the existing liquid cooling energy storage system power station needs to reserve sufficient spacing between the liquid cooling energy storage systems. At present, a spacing of more than 3 meters is generally taken, but this arrangement scheme leads to insufficient overall space utilization. Therefore, the air outlet assembly 220 is arranged on one side of the liquid cooling machine 210. The air outlet assembly 220 can further exchange heat from the high-temperature gas from the liquid cooling machine 210 and discharge it to a position above the container environment, so that the cooling airflow sinks downward to improve the heat island effect of the liquid cooling energy storage system.

[0044] According to an embodiment provided by the present application, the first bin body 221 is a frame structure formed by combining a plurality of pipe bodies. The first bin body 221 is provided with a partition plate 223 on the side close to the air outlet of the liquid cooling machine 210. A filter screen is installed on the partition plate 223 to filter the airflow from the liquid cooling machine 210.

[0045] It should be noted that the air outlet assembly 220 has a structure in which a plurality of bin bodies are stacked. The upper wall surface of the first bin body 221 is connected to the second bin body 224. The outer wall portion of the first bin body 221 is combined with four square tubes. The top portions of the square tubes are jointly connected to a top plate. The partition plate 223 is installed between the square tubes. A plurality of fans 222 are arranged at the intermediate positions in the space surrounded by the square tubes, the top plate, and the second bin body 224. The plurality of fans 222 are stacked and placed to avoid interference between the fans 222 and the air outlet path. The middle portions of each partition plate 223 are provided with a filter screen to filter the high-temperature gas from the liquid cooling machine 210.

[0046] According to an embodiment provided by the present application, the plurality of fans 222 are stacked and arranged in a square frame. The plate bodies are arranged between the fans 222. The square frame is surrounded by a filter screen on the outside.

[0047] It should be noted that each fan 222 is arranged in each square frame, and the outer side of each square frame is also surrounded by a filter screen. Since the airflow blown by the fan 222 is located above the entire liquid-cooled energy storage system, the filter screen can block solid impurities in the airflow to reduce the solid impurities in the airflow blown by the fan 222, and reduce the possibility of solid impurities accumulating on the liquid-cooled energy storage system to affect heat dissipation.

[0048] According to an embodiment provided by the present application, the distance between the fan 222 and the partition plate 223 is h1, and h1 satisfies: h1>0.7m.

[0049] It should be noted that since the air outlet duct of the liquid cooling machine 210 is close to the partition plate 223, and the partition plate 223 is thin, the air outlet duct of the liquid cooling machine 210 needs to maintain a distance of more than 0.7m from the fan 222 to avoid the situation that the air volume of the liquid cooling machine 210 is attenuated due to the addition of the fan 222.

[0050] According to an embodiment provided by the present application, the air outlet assembly 220 further includes a second bin body 224, one end of the second bin body 224 is connected with the first bin body 221, and the end of the second bin body 224 away from the first bin body 221 is provided with symmetrical fixed plates 225.

[0051] According to an embodiment provided by the present application, the fixed plates 225 are provided with symmetrical arc-shaped holes, and the arc-shaped holes cooperate with the side surface of the energy storage assembly 100 to fix the position of the air outlet assembly 220.

[0052] It should be noted that the position of the second bin body 224 is arranged below the first bin body 221, and the outer side of the second bin body 224 is a frame structure composed of a plurality of square pipes extending from the first bin body 221. One of the square pipes is provided with at least three metal hinges, and the other side of the metal hinges is connected with a door plate for facilitating opening and closing. In addition, the square pipe is further extended to the lower end portion of the second bin body 224, and the fixed plates 225 are arranged between the two square pipes. The fixed plates 225 are in the same orientation as the fan 222, and the fixed plates 225 are provided with two arc-shaped holes. The outside of the energy storage assembly 100 or the liquid cooling machine 210 can be provided with connecting rods and other components matched therewith to cooperate with the fixed plates 225 to improve the stability of the connection and the accuracy of the positioning.

[0053] According to an embodiment provided by the present application, the height of the second bin body 224 is at least greater than half of the height of the energy storage assembly 100, so as to ensure that the air outlet of the fan 222 is located on the upper half of the energy storage assembly 100. An electric machine is arranged in the second bin body 224, and the electric machine controls the fan 222.

[0054] It should be noted that the height of the second bin body 224 needs to be higher than half of the overall height of the energy storage assembly 100, so that the positions of all the fans 222 are set in the upper half of the energy storage assembly 100. By setting the fan 222 in the upper half of the energy storage assembly 100, the high-temperature gas outlet of the liquid cooling machine 210 is guided to the top of the liquid cooling energy storage system, which fully utilizes the characteristics of the liquid cooling machine 210 outlet wind speed and the upward flow of high-temperature gas, avoids the influence of the liquid cooling machine 210 blowing high-temperature gas on the heat exchange performance of the adjacent liquid cooling machine 210, and further improves the heat island effect of the energy storage system.

[0055] According to an embodiment provided by the present application, at least two energy storage assemblies 100 and cooling assemblies 200 form a group, and different cooling assemblies 200 in the group are arranged in parallel and opposite to the inner side of the energy storage assembly 100.

[0056] According to an embodiment provided by the present application, the thickness of the cooling assembly 200 is half of the thickness of the energy storage assembly 100.

[0057] It should be noted that the embodiment provided in the drawing is provided with two groups of energy storage assemblies 100 and cooling assemblies 200, each group including a pair of energy storage assemblies 100 and cooling assemblies 200. The cooling assembly 200 is arranged on the inner side of the energy storage assembly 100 in the length direction, and each cooling assembly 200 is arranged in parallel and opposite to each other, without overlapping or intersecting each other. Since this scheme newly installs the air outlet assembly 220 on the basis of the original liquid cooling machine 210, on the one hand, a space channel for the inlet and outlet of the fan 222 needs to be reserved, and on the other hand, the problem of air outlet attenuation of the liquid cooling machine 210 needs to be avoided. Therefore, the overall thickness of the cooling assembly 200 is designed to be half of the thickness of the energy storage assembly 100, which further saves the space of the entire liquid cooling energy storage system and improves the space utilization efficiency.

[0058] According to an embodiment provided by the present application, the transverse spacing between different energy storage assemblies 100 in the group is h2, and h2 satisfies: h2>1m.

[0059] It should be noted that since the new air outlet duct, i.e., the air outlet assembly 220, is added, the original spacing of more than 3m between the energy storage assemblies 100 in the liquid cooling energy storage system can be reduced to the range of 1m. However, in order not to affect the air outlet volume of the liquid cooling machine 210 and avoid the influence of the air volume between the fans 222 on each other, the distance h2 between the energy storage assemblies 100 in the same group needs to be set as h2>1m, so as to ensure that the heat island effect of the liquid cooling energy storage system is improved, and the space utilization of the system is increased.

[0060] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0061] It is to be understood that the application is not limited to the precise construction herein disclosed and shown in the drawings, and that various changes in shape, size and arrangements of parts can be made without departing from the scope of the application. The scope of the application is only limited by the appended claims.

Claims

1. A liquid-cooled energy storage system, characterized by, The application relates to a liquid-cooled energy storage system, which comprises a plurality of energy storage assemblies (100) and a plurality of cooling assemblies (200), wherein each energy storage assembly (100) is provided with at least one cooling assembly (200), the cooling assembly (200) is arranged on one side of the energy storage assembly (100), the cooling assembly (200) comprises a liquid cooling machine (210) and an air outlet assembly (220), the air outlet assembly (220) comprises a first warehouse body (221), one side of the first warehouse body (221) is connected with an air outlet of the liquid cooling machine (210), a plurality of fans (222) are arranged in the middle of the first warehouse body (221) in a stacked mode, and the fans (222) discharge air flow from the liquid cooling machine (210) to improve the heat island effect of the liquid-cooled energy storage system.

2. The liquid-cooled energy storage system of claim 1, wherein, The first warehouse body (221) is a frame structure formed by a plurality of pipe bodies, a partition plate (223) is arranged on the side of the first warehouse body (221) close to the air outlet of the liquid cooling machine (210), and a filter screen is arranged on the partition plate (223) to filter the air flow from the liquid cooling machine (210).

3. The liquid-cooled energy storage system of claim 2, wherein, The plurality of fans (222) are arranged in a stacked mode in a square frame, each fan (222) is separated from the adjacent fan (222) by a plate body, and a filter screen is arranged outside the square frame.

4. The liquid-cooled energy storage system of claim 2, wherein, The distance between the fan (222) and the partition plate (223) is h1, and h1 satisfies h1>0.7m.

5. The liquid-cooled energy storage system of claim 1, wherein, The air outlet assembly (220) further comprises a second warehouse body (224), one end of the second warehouse body (224) is connected with the first warehouse body (221), and symmetrical fixing plates (225) are arranged on the end of the second warehouse body (224) away from the first warehouse body (221).

6. A liquid-cooled energy storage system according to claim 5, wherein, Arc-shaped holes are formed in the fixing plates (225) in a symmetrical mode, the arc-shaped holes are matched with the side surface of the energy storage assembly (100) to fix the position of the air outlet assembly (220).

7. The liquid-cooled energy storage system of claim 5, wherein, The height of the second warehouse body (224) is greater than half of the height of the energy storage assembly (100), so that the air outlet of the fan (222) is located on the upper half of the energy storage assembly (100), and a motor is arranged in the second warehouse body (224) to control the fan (222).

8. The liquid-cooled energy storage system of claim 1, wherein, At least two energy storage assemblies (100) and cooling assemblies (200) form a group, and different cooling assemblies (200) in the group are arranged on the inner side of the energy storage assembly (100) in parallel and oppositely.

9. The liquid-cooled energy storage system of claim 8, wherein, The thickness of the cooling assembly (200) is greater than half of the thickness of the energy storage assembly (100).

10. The liquid-cooled energy storage system of claim 8, wherein, The transverse distance between different energy storage assemblies (100) in the group is h2, and h2 satisfies h2>1m.

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