Liquid cooling unit and energy storage container

Abstract

The embodiment of the utility model discloses a liquid cooling unit and an energy storage container. The liquid cooling unit comprises a unit cabinet body, at least one condensation fan and a compressor, the unit cabinet body is provided with a cavity, the condensation fan and the compressor are arranged in the cavity, and meanwhile, when the liquid cooling unit operates at a preset first liquid cooling power, the condensation fan operates at a preset first rotating speed, and the compressor operates at a preset second rotating speed; when the liquid cooling unit operates at a preset second liquid cooling power, the condensate fan operates at a preset third rotating speed, the compressor operates at a preset fourth rotating speed, the first liquid cooling power is smaller than the second liquid cooling power, the first rotating speed is smaller than the third rotating speed, and the second rotating speed is larger than the fourth rotating speed; therefore, the liquid cooling unit does not need to be replaced in the life operation cycle of the energy storage container, the situation that the structure of the container body needs to be changed and maintained due to the fact that the liquid cooling unit is replaced is avoided, and the installation cost and the maintenance cost of the energy storage container are greatly reduced.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a liquid cooling unit and an energy storage container. Background Technology

[0002] Energy storage containers are an integrated energy storage solution that integrates batteries, control equipment, and cooling systems into a standard container. They provide an efficient, reliable, and flexible means of energy management for the power grid, industrial, and commercial markets, and are widely used in various fields, including grid regulation, renewable energy storage, and emergency backup power.

[0003] With the rapid development of the energy storage battery industry, liquid cooling and liquid heating have become the most common battery thermal management methods for energy storage containers, with cooling and heating typically achieved through liquid cooling units. However, existing liquid cooling units cannot be designed for compatibility with energy storage containers, resulting in high installation and maintenance costs for energy storage containers. Utility Model Content

[0004] In view of the shortcomings of the prior art, this application provides a liquid-cooled unit and an energy storage container, which aims to solve the technical problem of high installation and maintenance costs of energy storage containers in the prior art.

[0005] To address the aforementioned problems, in a first aspect, this application provides a liquid-cooled unit, comprising:

[0006] The unit cabinet has a cavity;

[0007] At least one condenser fan is located inside the cavity;

[0008] The compressor is located inside the cavity;

[0009] When the liquid cooling unit operates at a preset first liquid cooling power, the condenser fan operates at a preset first speed, and the compressor operates at a preset second speed;

[0010] When the liquid cooling unit operates at the preset second liquid cooling power, the condenser fan operates at the preset third speed, and the compressor operates at the preset fourth speed;

[0011] The first liquid cooling power is less than the second liquid cooling power, the first speed is less than the third speed, and the second speed is greater than the fourth speed.

[0012] Furthermore, in the liquid cooling unit provided in this application, the liquid cooling unit also includes a water-cooled plate heat exchanger;

[0013] The cavity includes a first cavity and a second cavity, which are arranged sequentially along a preset first direction. The first cavity is equipped with a condenser fan and a compressor, and the second cavity is equipped with a water circuit heat exchanger.

[0014] Furthermore, in the liquid cooling unit provided in this application, the liquid cooling unit also includes a cavity isolation component and an electrical component. The cavity isolation component is configured to isolate the first cavity and the second cavity, and the electrical component is located in the second cavity.

[0015] Furthermore, in the liquid cooling unit provided in this application, the electrical components include a junction box and an electrical box, which are disposed on the same side of the second cavity.

[0016] Furthermore, in the liquid cooling unit provided in this application, the liquid cooling unit also includes a condenser, which is disposed in the first cavity and is inclined along the first direction.

[0017] Furthermore, in the liquid cooling unit provided in this application, the liquid cooling unit is provided with a liquid inlet and a liquid outlet, which are close to the second cavity.

[0018] Furthermore, in the liquid cooling unit provided in this application, the liquid cooling unit also includes an expansion tank disposed within the first cavity; or / and,

[0019] The liquid cooling unit also includes a heater located in the second chamber; and / or,

[0020] The liquid cooling unit also includes a piping butterfly valve located in the second chamber; or / and,

[0021] The liquid cooling unit also includes a water pump located in the second chamber.

[0022] Furthermore, in the liquid cooling unit provided in this application, an air inlet is provided on the first side of the unit cabinet, and an air outlet is provided on the second side of the unit cabinet, with the first side and the second side adjacent to each other.

[0023] Furthermore, in the liquid cooling unit provided in this application, the condenser fan is located near the air outlet.

[0024] Secondly, this application also provides an energy storage container that includes the liquid-cooled unit provided in the first aspect.

[0025] The liquid-cooled unit provided in this application includes a unit cabinet, at least one condenser fan, and a compressor. The unit cabinet has a cavity in which the condenser fan and compressor are located. When the liquid-cooled unit operates at a preset first liquid-cooling power, the condenser fan operates at a preset first speed, and the compressor operates at a preset second speed. When the liquid-cooled unit operates at a preset second liquid-cooling power, the condenser fan operates at a preset third speed, and the compressor operates at a preset fourth speed. The first liquid-cooling power is less than the second liquid-cooling power, the first speed is less than the third speed, and the second speed is greater than the fourth speed. This allows the liquid-cooled unit to operate at different power levels within an energy storage container, enabling the energy storage container to operate without replacing the liquid-cooled unit throughout its lifespan. This avoids the need for structural modifications and repairs to the container body when replacing the liquid-cooled unit, significantly reducing the installation and maintenance costs of the energy storage container. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a first structural schematic diagram of a liquid-cooled unit provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the second structure of the liquid-cooled unit provided in the embodiments of this application;

[0029] Figure 3 This is a third structural schematic diagram of the liquid-cooled unit provided in an embodiment of this application;

[0030] Figure 4 A simplified top view of the energy storage container provided in the embodiments of this application.

[0031] In the diagram, 110 is the unit cabinet, 111 is the air outlet, 112 is the air inlet, 113 is the cavity, 1131 is the first cavity, 1132 is the second cavity, 120 is the condenser fan, 130 is the compressor, 140 is the water circuit heat exchanger, 150 is the junction box, 160 is the electrical box, 170 is the condenser, 180 is the expansion tank, 190 is the heater, 200 is the pipeline butterfly valve, and 210 is the water pump. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0034] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0036] Furthermore, in this application, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific implementation.

[0037] In related technologies, the mainstream liquid cooling units with relatively large cooling capacities commonly used in energy storage containers are 50KW and 60KW. 50KW and 60KW liquid cooling units cannot be structurally compatible. However, the battery cells inside the energy storage container exhibit degradation and increased heat generation. After a certain period of operation, the overall heat generation of the energy storage container increases, thus increasing the demand for cooling capacity in the liquid cooling unit. Since the cooling capacity of liquid cooling units is typically designed based on the heat generation at the beginning of the battery's lifespan, energy storage containers need to be replaced with liquid cooling units with larger cooling capacities. For example, replacing a 50KW liquid cooling unit with a 60KW unit is extremely inconvenient due to the structural incompatibility between the two. Furthermore, the mainstream width of a 60KW liquid cooling unit is 1200mm, which is quite large, requiring significant reduction in the space of the electrical compartment, leading to inconvenience in wiring and maintenance within the combiner cabinet.

[0038] To address this, this application provides a liquid-cooled unit, comprising a unit cabinet, at least one condenser fan, and a compressor. The unit cabinet has a cavity, within which the condenser fan and compressor are located. Simultaneously, when the liquid-cooled unit operates at a preset first liquid-cooling power, the condenser fan operates at a preset first speed, and the compressor operates at a preset second speed. When the liquid-cooled unit operates at a preset second liquid-cooling power, the condenser fan operates at a preset third speed, and the compressor operates at a preset fourth speed. The first liquid-cooling power is less than the second liquid-cooling power, the first speed is less than the third speed, and the second speed is greater than the fourth speed. This allows the liquid-cooled unit, when applied to an energy storage container, to operate with different power liquid-cooling schemes within the container. This enables the energy storage container to operate without replacing the liquid-cooled unit throughout its lifespan, avoiding structural modifications and repairs to the container body required for replacing the liquid-cooled unit, and significantly reducing the installation and maintenance costs of the energy storage container.

[0039] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a first structural schematic diagram of a liquid-cooled unit provided in an embodiment of this application; Figure 2 This is a schematic diagram of the second structure of the liquid-cooled unit provided in the embodiments of this application; Figure 3 This is a third structural schematic diagram of the liquid cooling unit provided in the embodiments of this application.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, this application provides a liquid-cooled unit, which includes:

[0041] The unit cabinet 110 has a cavity 113;

[0042] At least one condenser fan 120 is located inside the cavity 113;

[0043] Compressor 130 is located inside cavity 113;

[0044] When the liquid cooling unit operates at a preset first liquid cooling power, the condenser fan 120 operates at a preset first speed, and the compressor 130 operates at a preset second speed.

[0045] When the liquid cooling unit operates at the preset second liquid cooling power, the condenser fan 120 operates at the preset third speed, and the compressor 130 operates at the preset fourth speed.

[0046] The first liquid cooling power is less than the second liquid cooling power, the first speed is less than the third speed, and the second speed is greater than the fourth speed.

[0047] Specifically, the condenser fan 120 is a key piece of equipment in the refrigeration system. Its main function is to dissipate the high-temperature, high-pressure refrigerant gas compressed by the compressor 130 through a heat exchanger and condense it into a liquid for reuse in the refrigeration cycle. The condenser fan 120 is driven by a motor to rotate an impeller, generating a strong airflow. When this airflow passes through the condenser 170, the condenser fan 120 carries away the heat released by the refrigerant, enabling the liquid-cooled unit to achieve the target cooling capacity. The liquid-cooled unit can contain up to eight condenser fans 120.

[0048] In this embodiment, the first liquid cooling power is less than the second liquid cooling power; that is, the first liquid cooling power can be 50KW, and the second liquid cooling power can be 60KW. When the liquid cooling unit needs to operate at 50KW, if the ambient temperature of the liquid cooling unit is a preset first temperature, such as 45℃, and the coolant outlet temperature is lower than a preset second temperature, such as 18℃, the condenser fan 120 can operate at a first speed, such as 60% of the rated speed of the condenser fan 120, and the compressor 130 can operate at a second speed, such as 5200rpm, thereby enabling the liquid cooling unit to operate at 50KW. When the liquid cooling unit needs to be increased from 50KW to 60KW, the speed of the condenser fan 120 needs to be increased to a third speed, such as... The condenser fan 120 operates at 80% of its rated speed to facilitate sufficient heat exchange with the external cooling system. The compressor 130's speed needs to be reduced from the second to the fourth speed, such as from 5200 rpm to 5000 rpm, to reduce the internal condensing pressure of the compressor 130. This slows the flow of gas inside the compressor 130, allowing for sufficient heat exchange and enabling the liquid-cooled unit to operate at 60 kW. This achieves an increase in cooling capacity without replacing the liquid-cooled unit, solving the problem of needing to replace the liquid-cooled unit due to increased battery heat generation later on.

[0049] The compressor 130 is a mechanical device that increases gas pressure by reducing gas volume, and it is widely used in industry and daily life. It is mainly used to raise low-pressure gas to high-pressure gas and is one of the core components of a refrigeration system. The compressor 130 plays a crucial role in the refrigeration cycle, achieving the refrigeration effect through four processes: compression, condensation, expansion, and evaporation.

[0050] The liquid-cooled unit provided in this application includes a unit cabinet 110, at least one condenser fan 120, and a compressor 130. The unit cabinet 110 has a cavity 113, in which the condenser fan 120 and compressor 130 are located. When the liquid-cooled unit operates at a preset first liquid-cooling power, the condenser fan 120 operates at a preset first speed, and the compressor 130 operates at a preset second speed. When the liquid-cooled unit operates at a preset second liquid-cooling power, the condenser fan 120 operates at a preset third speed, and the compressor 130 operates at a preset fourth speed. The first liquid-cooling power is less than the second liquid-cooling power, the first speed is less than the third speed, and the second speed is greater than the fourth speed. This allows the liquid-cooled unit to operate at different power levels within an energy storage container, enabling the energy storage container to operate without replacing the liquid-cooled unit during its life cycle. This avoids the need for structural modifications and repairs to the container body when replacing the liquid-cooled unit, greatly reducing the installation and maintenance costs of the energy storage container.

[0051] In some embodiments, such as Figure 2 and Figure 3 As shown, the liquid cooling unit also includes a water circuit heat exchanger 140; wherein, the cavity 113 includes a first cavity 1131 and a second cavity 1132, the first cavity 1131 and the second cavity 1132 are arranged sequentially along a preset first direction, the first cavity 1131 is provided with a condenser fan 120 and a compressor 130, and the second cavity 1132 is provided with a water circuit heat exchanger 140.

[0052] In this embodiment, the internal structure of the liquid cooling unit adopts a layered design, with the cabinet's cavities 113 designed as a first cavity 1131 and a second cavity 1132. The first cavity 1131 and the second cavity 1132 can be arranged sequentially along a first direction (Y direction), i.e., designed from top to bottom. The condenser fan 120 and compressor 130 can be located in the first cavity 1131, and the water heat exchanger 140 can be located in the second cavity 1132. This facilitates a reasonable layout of the piping within the liquid cooling unit and allows for subsequent maintenance of the piping. Here, the Y direction is the vertical direction, and the X direction is the horizontal direction.

[0053] The water-cooled plate heat exchanger 140 is primarily used in liquid-cooled units to achieve efficient heat dissipation. It works by using a cold plate to contact the heat-generating components, and then circulating cooling liquid to remove heat. The application of the water-cooled plate heat exchanger 140 in liquid-cooled units mainly involves cold-plate liquid cooling technology. Cold-plate liquid cooling is an indirect liquid cooling technology that achieves heat dissipation by indirectly transferring heat from the heat-generating components to the circulating cooling liquid.

[0054] In some embodiments, such as Figure 2 and Figure 3 As shown, the liquid cooling unit also includes a cavity 113 isolation component and electrical components. The cavity 113 isolation component is configured to isolate the first cavity 1131 and the second cavity 1132, and the electrical components are located in the second cavity 1132.

[0055] In this embodiment, the cavity 113 isolator is mainly used to separate the first cavity 1131 and the second cavity 1132. Electrical components can be installed within the second cavity 1132. These electrical components mainly include various electrical parts for controlling and driving the liquid cooling system. Specifically, the electrical components can be located below the cavity 113 for easy maintenance. The cavity 113 isolator can be a partition plate.

[0056] In some embodiments, such as Figure 2 and Figure 3 As shown, the electrical components include a junction box 150 and an electrical box 160, which are disposed on the same side within the second cavity 1132.

[0057] In this embodiment, the electrical components include a junction box 150 and an electrical box 160. Both the junction box 150 and the electrical box 160 can be located at the bottom of the liquid cooling unit. At the same time, the junction box 150 and the electrical box 160 are arranged on the same side in the second cavity 1132 to facilitate subsequent maintenance.

[0058] The design and application of the junction box 150 for the liquid cooling unit depend on the specific application scenario and equipment type, including waterproof terminal junction boxes, auxiliary junction boxes, standard junction boxes, cooling tower junction boxes, etc. Its design and installation should comply with relevant safety standards and operating procedures. The electrical box 160 for the liquid cooling unit is an integrated control unit responsible for managing the power supply, control, monitoring, and communication functions of the liquid cooling system, ensuring efficient and safe operation of the system.

[0059] In some embodiments, such as Figure 2 and Figure 3 As shown, the liquid cooling unit also includes a condenser 170, which is disposed in the first cavity 1131 and is inclined along the first direction.

[0060] In this embodiment, when the condenser 170 is arranged in the first cavity 1131, the principle that the hypotenuse of a triangle is the longest can be utilized, and it can be arranged at a 45° angle in the second cavity 1132, thereby reducing the width dimension while ensuring the condensation area. In addition, the compressor 130 is connected to the condenser 170 and the water circuit board 140 through pipelines and is arranged on the same side of the liquid cooling unit, slightly to the outside, to facilitate the rationalization of pipeline layout and reduce pipeline length, and to facilitate maintenance.

[0061] The condenser 170 is a key component of the liquid-cooled chiller unit. Its main function is to cool and condense the high-temperature, high-pressure gaseous refrigerant into a high-pressure, room-temperature liquid through heat exchange. The working principle of the condenser 170 is based on heat conduction and the process of change of state of matter. When the high-temperature, high-pressure gaseous refrigerant enters the condenser 170, it exchanges heat with the cooling medium (such as water or air) outside the condenser 170 pipes, causing the refrigerant's temperature to gradually decrease and change from a gaseous state to a liquid state. In the liquid-cooled chiller unit, the condenser 170 typically utilizes the refrigerant and the air flowing through its core for heat exchange, allowing the high-temperature, high-pressure gaseous refrigerant to dissipate heat, cool, and condense into a high-pressure, room-temperature liquid.

[0062] In some embodiments, the liquid cooling unit is provided with a liquid inlet and a liquid outlet, which are located near the second cavity 1132.

[0063] In this embodiment, the liquid chiller unit adopts a DN50 external pipeline interface, and the pipeline adopts a bottom-in, bottom-out form. That is, by setting the liquid inlet and outlet of the liquid chiller unit at the bottom of the liquid chiller unit, specifically close to the second cavity 1132, the overall width of the liquid chiller unit can be reduced.

[0064] In some embodiments, such as Figure 2 and Figure 3 As shown, the liquid cooling unit also includes an expansion tank 180 located in the first cavity 1131.

[0065] Specifically, the primary function of the expansion tank 180 is to regulate the volume changes of the coolant to maintain stable coolant pressure within the liquid-cooled unit. This is crucial for preventing pressure fluctuations caused by temperature changes or leaks. The expansion tank 180 typically employs a fully enclosed design to reduce the risk of leakage. Furthermore, the expansion tank 180 is usually equipped with a rubber bladder that completely separates the water chamber and the air chamber, effectively absorbing volume changes in the coolant during heating or cooling. This not only improves system reliability but also reduces the potential for failure due to pressure fluctuations. In a liquid-cooled system, the expansion tank 180 is usually located at a high point within the liquid-cooled unit to facilitate air removal. The design goal of the expansion tank 180 is to ensure that the liquid-cooled unit can accommodate water expansion throughout the entire heating or cooling cycle without exceeding the pressure limits of the lowest pressure-rated components of the liquid-cooled unit.

[0066] In some embodiments, such as Figure 2 and Figure 3 As shown, the liquid cooling unit also includes a heater 190 disposed in the second cavity 1132.

[0067] Specifically, heater 190 (PTC) in the liquid cooling unit is used to regulate the temperature of the coolant to ensure that the coolant circulates within a suitable range. In this embodiment, the liquid cooling unit can be equipped with a PTC (Positive Temperature Coefficient) heater, especially under low-temperature conditions, to prevent the battery temperature from dropping too low by heating the coolant and to provide temperature compensation to ensure that the coolant temperature meets design requirements.

[0068] In some embodiments, such as Figure 2 and Figure 3 As shown, the liquid cooling unit also includes a pipeline butterfly valve 200 located in the second chamber 1132.

[0069] Specifically, the butterfly valve 200 plays a crucial control role in liquid-cooled chiller units. Butterfly valves in liquid-cooled chiller units are typically used to cut off or regulate fluid flow to ensure normal system operation and maintenance. In liquid-cooled chiller units, butterfly valves can adopt different structural forms, such as single eccentric and double eccentric, to adapt to different operating conditions and pressure requirements. Furthermore, the design of butterfly valves also considers the special needs of high-temperature environments, reducing the risk of thermal damage that valves may encounter during operation through an internal water cooling system. In practical applications, butterfly valves are usually used in conjunction with electric or pneumatic actuators to achieve automated control. For example, both the chilled and cooling sides of the chiller unit use electric butterfly valves to cut off the water circuit when the chiller unit stops operating, preventing short-circuiting of water flow.

[0070] In some embodiments, such as Figure 2 and Figure 3 As shown, the liquid cooling unit also includes a water pump 210 located in the second chamber 1132.

[0071] Specifically, water pump 210 is a crucial component of the liquid-cooled unit. Its main function is to drive the coolant to circulate within the unit, thereby removing heat generated by the equipment. The performance of water pump 210 directly affects the heat dissipation effect and stability of the liquid-cooled unit. When selecting water pump 210, several factors need to be considered, including flow rate, head, power, and working medium. Flow rate is one of the important parameters determining the performance of water pump 210. It needs to meet the coolant requirements of the liquid-cooled unit, ensuring that the coolant can quickly flow through all components and remove heat. Head refers to the ability of water pump 210 to raise the coolant to a certain height and maintain a certain pressure, which is crucial for overcoming fluid resistance in the pipeline. Furthermore, the efficiency of water pump 210 is also very important, as it determines the heat transfer efficiency of the liquid-cooled unit, thus affecting its operating efficiency and stability. Therefore, when selecting water pump 210, it is usually necessary to calculate the required flow rate based on the law of conservation of energy and the product's allowable temperature rise, and to initially select the appropriate pump range accordingly.

[0072] In some embodiments, such as Figure 1 As shown, the first side of the unit cabinet 110 is provided with an air inlet 112, and the second side of the unit cabinet 110 is provided with an air outlet 111. The first side and the second side are adjacent to each other.

[0073] In this embodiment, the air inlet 112 is located on the first side and can be close to the fan so that the fan can carry away the heat inside the liquid cooling unit. The air outlet 111 can be located on the second side, which can be adjacent to the first side.

[0074] In some embodiments, such as Figure 4 As shown, this application also provides an energy storage container, which includes the liquid cooling unit provided in the first aspect.

[0075] In this embodiment, the energy storage container is equipped with 10 battery clusters, namely battery cluster #1, battery cluster #2, battery cluster #3, battery cluster #4, battery cluster #5, battery cluster #6, battery cluster #7, battery cluster #8, battery cluster #9, and battery cluster #10. These 10 battery clusters are arranged in two rows within the energy storage container, with five battery clusters in each row. The energy storage container also houses a liquid-cooled chiller and a junction box. The liquid-cooled chiller is arranged side-by-side with one row of battery clusters, and the junction box is arranged side-by-side with the other row of battery clusters.

[0076] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A liquid-cooled unit, characterized in that, include: The unit cabinet has a cavity; At least one condenser fan is disposed within the cavity; The compressor is located within the cavity; When the liquid cooling unit operates at a preset first liquid cooling power, the condenser fan operates at a preset first speed, and the compressor operates at a preset second speed; When the liquid cooling unit operates at a preset second liquid cooling power, the condenser fan operates at a preset third speed, and the compressor operates at a preset fourth speed; The first liquid cooling power is less than the second liquid cooling power, the first rotation speed is less than the third rotation speed, and the second rotation speed is greater than the fourth rotation speed.

2. The liquid-cooled unit according to claim 1, characterized in that, The liquid cooling unit also includes a water-cooled plate heat exchanger; The cavity includes a first cavity and a second cavity, which are arranged sequentially along a preset first direction. The first cavity contains the condenser fan and the compressor, and the second cavity contains the water circuit heat exchanger.

3. The liquid-cooled unit according to claim 2, characterized in that, The liquid cooling unit also includes a cavity isolation component and an electrical component. The cavity isolation component is configured to isolate the first cavity and the second cavity, and the electrical component is disposed in the second cavity.

4. The liquid-cooled unit according to claim 3, characterized in that, The electrical components include a junction box and an electrical box, which are disposed on the same side of the second cavity.

5. The liquid-cooled unit according to claim 2, characterized in that, The liquid cooling unit also includes a condenser, which is inclinedly arranged in the first cavity.

6. The liquid-cooled unit according to claim 2, characterized in that, The liquid cooling unit is provided with a liquid inlet and a liquid outlet, which are located near the second cavity.

7. The liquid-cooled unit according to claim 2, characterized in that, The liquid cooling unit further includes an expansion tank disposed within the first cavity; or / and, The liquid cooling unit further includes a heater disposed within the second cavity; or / and, The liquid cooling unit also includes a pipeline butterfly valve located within the second cavity; or / and, The liquid cooling unit also includes a water pump located in the second cavity.

8. The liquid-cooled unit according to any one of claims 1-7, characterized in that, The unit cabinet has an air inlet on the first side and an air outlet on the second side, with the first side and the second side being adjacent to each other.

9. The liquid-cooled unit according to claim 8, characterized in that, The condenser fan is located near the air outlet.

10. An energy storage container, characterized in that, Includes the liquid-cooled unit according to any one of claims 1-9.

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