Cooling device of energy storage electric cabinet and energy storage system

Abstract

The utility model provides a cooling device and an energy storage system of an energy storage electric cabinet, and relates to the technical field of battery thermal management, the device comprises a shell, a compressor, a condenser, an expansion valve, an evaporator and a first fan, the shell is provided with a return air inlet, an air outlet and at least one fresh air inlet, the return air inlet is provided with a first air door capable of opening or closing the return air inlet, and the air outlet is provided with a second air door capable of opening or closing the fresh air inlet. A second air door capable of opening or closing the fresh air opening is arranged at the fresh air opening, the return air inlet and the air outlet are both used for communicating the interior of the shell with the interior of the energy storage electric cabinet, the fresh air opening is used for communicating the interior of the shell with the external environment, the compressor, the condenser, the expansion valve and the evaporator are connected through pipelines to form a loop, and the evaporator and the air outlet are correspondingly arranged. The first fan is used for guiding air entering the shell to the air outlet. The cooling device of the energy storage electric cabinet and the energy storage system can work in different working modes according to different external environment temperatures, so that the energy consumption is greatly reduced, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery thermal management, and in particular to a cooling device for an energy storage cabinet and an energy storage system. Background Art

[0002] Electrochemical energy storage devices, such as energy storage cabinets, typically utilize multiple battery packs arranged as needed to perform charging and discharging tasks. The battery's heat dissipation system is crucial. Excessively high operating temperatures can reduce battery capacity and lifespan, potentially leading to thermal runaway and fire.

[0003] In related technologies, heat dissipation and cooling of energy storage cabinets are often achieved by using a compressor refrigeration system combined with air cooling. However, this cooling method is relatively simple and cannot be adaptively adjusted according to different ambient temperatures, resulting in high energy consumption. Utility Model Content

[0004] The technical problem solved by the utility model is that the existing cooling device of the energy storage cabinet has a single cooling mode and cannot be adaptively adjusted according to different ambient temperatures, resulting in high energy consumption.

[0005] In order to solve the above problems, on the one hand, the utility model provides a cooling device for an energy storage cabinet, comprising a housing, a compressor, a condenser, an expansion valve, an evaporator and a first fan;

[0006] The shell is provided with a return air inlet, an air outlet, and at least one fresh air inlet, the return air inlet is provided with a first damper that can open or close the return air inlet, and the fresh air inlet is provided with a second damper that can open or close the fresh air inlet, the return air inlet and the air outlet are both used to connect the interior of the shell with the interior of the energy storage cabinet, and the fresh air inlet is used to connect the interior of the shell with the external environment;

[0007] The compressor, the condenser, the expansion valve and the evaporator are all arranged in the shell, the compressor, the condenser, the expansion valve and the evaporator are connected by pipes to form a loop, and the evaporator is arranged at the air outlet;

[0008] The first fan is disposed in the housing and is used to guide the air entering the housing to the air outlet.

[0009] Optionally, the first damper is hinged to the inner side wall of the shell, and the cooling device of the energy storage cabinet further includes a first driving member, which is transmission-connected to the first damper and is used to drive the first damper to rotate to open or close the return air outlet;

[0010] The second damper is hinged to the inner wall of the shell, and the cooling device of the energy storage cabinet also includes a second driving member, which is transmission-connected to the second damper and is used to drive the second damper to rotate to open or close the fresh air inlet.

[0011] Optionally, the first driving member and the second driving member are both telescopic motors, the output end of the first driving member is connected to the first damper through a flexible connecting member, the output end of the first driving member telescopically moves to drive the first damper to rotate relative to the shell, and the output end of the second driving member is connected to the second damper through a flexible connecting member, the output end of the second driving member telescopically moves to drive the second damper to rotate relative to the shell.

[0012] Optionally, a first partition and a second partition are provided in the shell, the first partition divides the space in the shell into a first cavity and a second cavity, and the compressor and the condenser are both provided in the first cavity;

[0013] The second partition separates the second cavity into a first sub-cavity and a second sub-cavity. The expansion valve and the evaporator are both disposed in the second sub-cavity. The return air inlet and the fresh air inlet are in communication with the first sub-cavity, and the air outlet is in communication with the second sub-cavity.

[0014] The first fan is arranged on the second partition plate and is used for guiding the air in the first sub-cavity to the second sub-cavity.

[0015] Optionally, the shell is a rectangular structure, including a front panel, a rear panel, a left panel, a right panel, a top panel and a bottom panel, and the return air inlet and the air outlet are both arranged on the front panel.

[0016] Optionally, the first partition includes a first plate segment, a second plate segment, and a third plate segment sequentially connected from top to bottom, the first plate segment is arranged parallel to the front panel, the second plate segment is arranged obliquely from the bottom side of the first plate segment toward the front panel, and the third plate segment is arranged parallel to the bottom panel;

[0017] The four sides of the second partition are respectively connected to the front panel, the left panel, the right panel and the first panel segment; the first sub-cavity is formed between the second partition and the second panel segment and the third panel segment; the second sub-cavity is formed between the second partition and the bottom panel.

[0018] Optionally, a horizontal height of a side of the second partition plate connected to the front panel is lower than a horizontal height of a side of the second partition plate connected to the first panel segment.

[0019] Optionally, two fresh air vents are provided and are located on the left panel and the right panel respectively.

[0020] Optionally, a heat dissipation air inlet and a heat dissipation air outlet are provided on the housing corresponding to the first cavity, and the heat dissipation air inlet and the heat dissipation air outlet are both used to connect the first cavity with the external environment;

[0021] The cooling device of the energy storage cabinet further includes a second fan, which is disposed in the first cavity and located at the heat dissipation air inlet, and the condenser is disposed at the heat dissipation air outlet.

[0022] On the other hand, the present invention also provides an energy storage system, comprising an energy storage cabinet and a cooling device for the energy storage cabinet as described in any of the above items, wherein the energy storage cabinet is provided with an air inlet and an air outlet, and the air inlet and air outlet of the energy storage cabinet are respectively connected to the air outlet and return air outlet on the shell of the energy storage cabinet cooling device.

[0023] The cooling device and energy storage system of the energy storage cabinet of the present invention can selectively open or close the return air inlet and the fresh air inlet by setting a first damper and a second damper. When the external ambient temperature is high, the return air inlet can be opened through the first damper, and the fresh air inlet can be closed through the second damper. The compressor, condenser, expansion valve and evaporator form a compressor refrigeration system and start. Through the diversion effect of the first fan, the air inside the energy storage cabinet can enter the shell through the return air inlet. The air is cooled in the process of flowing through the evaporator, and then flows into the energy storage cabinet through the air outlet to cool the battery. When the external ambient temperature is low, the return air inlet can be closed through the first damper, and the fresh air inlet can be opened through the second damper. The compressor refrigeration system is started, and the low-temperature air from the outside enters the shell through the fresh air inlet. After cooling in the process of flowing through the evaporator, it flows into the energy storage cabinet through the air outlet to cool the battery. When the ambient temperature is extremely low, the return air vent is closed via the first damper, the fresh air vent is opened via the second damper, and the compressor refrigeration system is shut down. Extremely cold air enters the housing through the fresh air vent and flows directly through the air outlet into the energy storage cabinet, cooling the batteries. The energy storage cabinet's cooling device operates in different modes depending on the ambient temperature, significantly reducing energy consumption and lowering operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the internal structure of a cooling device for an energy storage cabinet according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the internal structure of the cooling device of the energy storage cabinet from another direction.

[0026] Description of reference numerals:

[0027] 10-housing; 11-return air inlet; 12-first damper; 13-air outlet; 14-fresh air inlet; 15-second damper; 16-heat dissipation inlet; 17-heat dissipation outlet; 101-first cavity; 102-first sub-cavity; 103-second sub-cavity; 20-compressor; 30-condenser; 40-expansion valve; 50-evaporator; 60-first fan; 70-first driving member; 80-second driving member; 90-first partition; 91-first plate section; 92-second plate section; 93-third plate section; 100-second partition; 110-second fan. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] It should be noted that in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of such features. The directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0030] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In the prior art, heat dissipation and cooling of energy storage cabinets suffer from a single cooling method and an inability to adapt to different ambient temperatures, resulting in high energy consumption.

[0032] To solve the above technical problems, on the one hand, please refer to Figure 1 and Figure 2An embodiment of the present invention provides a cooling device for an energy storage cabinet, including a housing 10 , a compressor 20 , a condenser 30 , an expansion valve 40 , an evaporator 50 and a first fan 60 .

[0033] Among them, the shell 10 is provided with a return air inlet 11, an air outlet 13 and at least one fresh air inlet 14. The return air inlet 11 is provided with a first damper 12 that can open or close the return air inlet 11, and the fresh air inlet 14 is provided with a second damper 15 that can open or close the fresh air inlet 14. The return air inlet 11 and the air outlet 13 are both used to connect the interior of the shell 10 with the interior of the energy storage cabinet, and the fresh air inlet 14 is used to connect the interior of the shell 10 with the external environment; the compressor 20, condenser 30, expansion valve 40 and evaporator 50 are all arranged in the shell 10, and the compressor 20, condenser 30, expansion valve 40 and evaporator 50 are connected by pipes to form a loop, and the evaporator 50 is arranged at the air outlet 13; the first fan 60 is arranged in the shell 10, and is used to guide the air entering the shell 10 to the air outlet 13.

[0034] Specifically, the compressor 20, condenser 30, expansion valve 40, and evaporator 50 form a compressor refrigeration system, with refrigerant circulating within the loop formed by these components. The refrigerant flows through the components in the following direction: compressor 20 → condenser 30 → expansion valve 40 → evaporator 50 → compressor 20. The compressor 20 compresses low-pressure, low-temperature gaseous refrigerant into high-pressure, high-temperature gaseous refrigerant. The high-pressure, high-temperature gaseous refrigerant flows into the condenser 30, where it undergoes heat exchange with the surrounding air or water, releasing heat and condensing into high-pressure liquid refrigerant. The high-pressure liquid refrigerant is throttled and depressurized by the expansion valve 40, becoming a low-pressure, low-temperature liquid refrigerant. The low-pressure, low-temperature liquid refrigerant enters the evaporator 50, where it absorbs heat from the surrounding air and evaporates into a low-pressure, low-temperature gaseous refrigerant. The low-pressure, low-temperature gaseous refrigerant then returns to the compressor 20, completing a cycle.

[0035] The cooling device of the energy storage cabinet of this embodiment is used to connect to the energy storage cabinet to cool the batteries within the cabinet. The energy storage cabinet may be provided with an air inlet and an air outlet. The air outlet of the energy storage cabinet is connected to the return air outlet 11 on the cooling device housing 10, and the air inlet of the energy storage cabinet is connected to the air outlet 13 on the housing 10. The housing 10 is also provided with at least one fresh air inlet 14, which is used to connect the interior of the housing 10 with the external environment. The return air inlet 11 and the fresh air inlet 14 can be selectively opened or closed by providing a first damper 12 and a second damper 15.

[0036] When the ambient temperature is high (the ambient temperature is greater than the return air temperature), the return air inlet 11 can be opened through the first damper 12, and the fresh air inlet 14 can be closed through the second damper 15, and the compressor refrigeration system can be started. Through the diversion effect of the first fan 60, the air inside the energy storage cabinet can enter the shell 10 through the return air inlet 11. The evaporator 50 is located at the air outlet 13. The air inside the shell 10 flows through the evaporator 50 and then flows into the interior of the energy storage cabinet through the air outlet 13. During this process, the refrigerant in the evaporator 50 can absorb the heat of the air flowing through the evaporator 50 to cool the air. The low-temperature air obtained after cooling enters the energy storage cabinet and exchanges heat with the batteries in the energy storage cabinet to cool the batteries. The air circulates inside the energy storage cabinet and the shell 10, and the refrigerant circulates in the loop of the compressor refrigeration system, thereby achieving continuous cooling of the batteries inside the energy storage cabinet.

[0037] When the ambient temperature is low (less than the return air temperature), the return air inlet 11 is closed via the first damper 12, and the fresh air inlet 14 is opened via the second damper 15, activating the compressor refrigeration system. Through the diversion effect of the first fan 60, cooler air from the outside enters the housing 10 through the fresh air inlet 14. After cooling while passing through the evaporator 50, it flows through the air outlet 13 into the energy storage cabinet, cooling the batteries. Because the ambient temperature is lower than the return air temperature, using outside air as the return air to the evaporator 50 reduces the power consumption of the compressor refrigeration system, achieving energy savings.

[0038] When the ambient temperature is extremely low (less than the supply air temperature), the first damper 12 closes the return air inlet 11, the second damper 15 opens the fresh air inlet 14, and the compressor refrigeration system shuts down. The first fan 60 directs the flow of extremely cold air into the housing 10 through the fresh air inlet 14, then flows through the air outlet 13 into the energy storage cabinet, cooling the batteries. During this period, only the first fan 60 operates, and the compressor refrigeration system shuts down. This cools the energy storage cabinet while further reducing power consumption and achieving energy savings.

[0039] It should be noted that the return air temperature refers to the temperature after heat exchange between the air and the batteries within the energy storage cabinet, while the supply air temperature refers to the temperature after heat exchange between the air and the refrigerant within the evaporator 50. The cooling device of the energy storage cabinet of this embodiment of the utility model can operate in different operating modes according to different external ambient temperatures, significantly reducing energy consumption and lowering operating costs.

[0040] Optionally, the first damper 12 is hinged to the inner wall of the housing 10, and the cooling device of the energy storage cabinet further includes a first driving member 70, which is in transmission connection with the first damper 12 and is used to drive the first damper 12 to rotate to open or close the return air inlet 11; the second damper 15 is hinged to the inner wall of the housing 10, and the cooling device of the energy storage cabinet further includes a second driving member 80, which is in transmission connection with the second damper 15 and is used to drive the second damper 15 to rotate to open or close the fresh air inlet 14. In the illustrated embodiment, taking the return air inlet 11 and the first damper 12 as an example, the first damper 12 can be a flat plate-shaped structure, the shape of the first damper 12 is the same as that of the return air inlet 11 and the area can be slightly larger than the return air inlet 11, one side of the first damper 12 is arranged near a side edge of the return air inlet 11 and is hinged to the housing 10, and the first driving member 70 can control the first damper 12 to rotate relative to the housing 10. When the first damper 12 rotates to fit the inner wall of the shell 10 and covers the return air outlet 11, the return air outlet 11 is in a closed state; when the first damper 12 rotates to be perpendicular to the inner wall of the shell 10, the return air outlet 11 is in a fully open state. It can be understood that when the first damper 12 rotates to the return air outlet 11 between the closed state and the fully open state, the first damper 12 can form a certain barrier to the air entering the shell 10 from the return air outlet 11. In this way, by controlling the rotation angle of the first damper 12 relative to the shell 10, the flow rate of air entering the shell 10 can be controlled, and then the overall flow rate of the air can be controlled. Similarly, by controlling the rotation angle of the second damper 15 relative to the shell 10, the flow rate of external air entering the shell 10 can be controlled.

[0041] Furthermore, both the first driving member 70 and the second driving member 80 may be telescopic motors, the output end of the first driving member 70 being connected to the first damper 12 via a flexible connector, the output end of the first driving member 70 telescopically moving to drive the first damper 12 to rotate relative to the housing 10, and the output end of the second driving member 80 being connected to the second damper 15 via a flexible connector, the output end of the second driving member 80 telescopically moving to drive the second damper 15 to rotate relative to the housing 10. Specifically, in the illustrated embodiment, taking the first driving member 70 as an example, the connection between the first damper 12 and the housing 10 is located above the return air inlet 11, the telescopic motor may be fixed to the top panel of the housing 10, the output end of the telescopic motor facing downward, the flexible connector may be a rope, and the output end of the telescopic motor is connected to the side of the first damper 12 facing away from the return air inlet 11 via the rope. In this way, when the output end of the telescopic motor moves downward, the first damper 12 tends to rotate downward under the action of gravity, gradually closing the return air vent 11. When the output end of the telescopic motor moves upward, the rope can be used to pull the first damper 12 upward, gradually opening the return air vent 11. This simple structure and convenient control are achieved. The connection structure between the second damper 15 and the second driving member 80 is similar to that between the first damper 12 and the first driving member 70, and will not be further described here.

[0042] It should be noted that the present application does not limit the opening and closing method or the rotation drive method of the first damper 12 and the second damper 15. For example, in other embodiments, the first damper 12 can be slidably connected to the housing 10, and the first damper 12 can be partially or completely blocked from the return air outlet 11 by driving the first damper 12 to slide relative to the housing 10, thereby achieving the regulation of the air flow through the return air outlet 11. Alternatively, the first drive member 70 can also be a rotary motor, and the first damper 12 can be hinged to the housing 10 through a rotating shaft, and the first drive member 70 drives the rotating shaft to rotate, thereby driving the first damper 12 to rotate relative to the housing 10. Under the guidance of the above embodiments, the combination relationship of different structures and different driving methods between the damper and the drive member is within the protection scope of the present utility model.

[0043] Optionally, a first partition 90 and a second partition 100 are provided in the shell 10, and the first partition 90 divides the space in the shell 10 into a first cavity 101 and a second cavity, and the compressor 20 and the condenser 30 are both arranged in the first cavity 101; the second partition 100 divides the second cavity into a first sub-cavity 102 and a second sub-cavity 103, and the expansion valve 40 and the evaporator 50 are both arranged in the second sub-cavity 103, the return air inlet 11 and the fresh air inlet 14 are connected to the first sub-cavity 102, and the air outlet 13 is connected to the second sub-cavity 103; the first fan 60 is provided on the second partition 100, and is used to guide the air in the first sub-cavity 102 to the second sub-cavity 103. In this way, air can enter the first sub-cavity 102 from the return air inlet 11 or the fresh air inlet 14, and then be directed to the second sub-cavity 103 through the first fan 60. By providing the first sub-cavity 102 and the second sub-cavity 103, the air flow path can be restricted, the air inlet space and the air outlet space can be isolated, and turbulence in the air flow within the housing 10 can be avoided. By providing the first cavity 101 and the second cavity, and arranging components such as the compressor 20 and the condenser 30 in the first cavity 101 isolated from the second cavity, the impact of the heat generated by the compressor 20 and the condenser 30 on the flowing air can be reduced. At the same time, the air flow space can be reduced, the air flow rate can be increased, and the cooling efficiency of the energy storage cabinet can be improved.

[0044] Specifically, the housing 10 can be a rectangular structure, including a front panel, a rear panel, a left panel, a right panel, a top panel, and a bottom panel. The return air vent 11 and the air outlet 13 are both located on the front panel. Locating the return air vent 11 and the air outlet 13 on the same side of the housing 10 facilitates connection between the housing 10 and the energy storage cabinet. The front panel of the housing 10 can be fitted snugly onto the cabinet body, eliminating the need for separate piping connections, reducing costs and improving space utilization.

[0045] Furthermore, the first partition 90 may include a first plate segment 91, a second plate segment 92, and a third plate segment 93 connected sequentially from top to bottom, wherein the first plate segment 91 is arranged parallel to the front panel, the second plate segment 92 is arranged inclined from the bottom side of the first plate segment 91 toward the front panel, and the third plate segment 93 is arranged parallel to the bottom panel. The four sides of the second partition 100 are respectively connected to the front panel, the left panel, the right panel, and the first plate segment 91. A first sub-cavity 102 is formed between the second partition 100 and the top panel, and a second sub-cavity 103 is formed between the second partition 100 and the second plate segment 92 and the third plate segment 93. The return air inlet 11 is located at the upper portion of the front panel, and the air outlet 13 is located at the lower portion of the front panel. By tilting the second plate segment 92 toward the front panel, the air entering the second sub-cavity 103 can be guided, which facilitates the air flow to the air outlet 13. The third plate section 93 is arranged parallel to the bottom panel, and the evaporator 50 can be installed on the third plate section 93. The third plate section 93 supports and fixes the evaporator 50, which is conducive to the stable installation of the evaporator 50.

[0046] Preferably, the horizontal height of the side where the second partition 100 is connected to the front panel is lower than the horizontal height of the side where the second partition 100 is connected to the first plate segment 91. In this way, the first fan 60 can be tilted toward the return air inlet 11, which helps the first fan 60 guide the air entering the first sub-cavity 102 from the return air inlet 11 to the second sub-cavity 103.

[0047] Preferably, two fresh air inlets 14 are provided, one on the left panel and one on the right panel. This allows for dual-sided air intake of the housing 10, increasing the air intake rate. Correspondingly, two second dampers 15 and two second drive members 80 are provided, one corresponding to each of the two fresh air inlets 14. Both the return air inlet 11 and the fresh air inlet 14 can be formed by a plurality of evenly arranged small holes. These multiple small holes not only facilitate air flow but also provide a certain degree of filtering, preventing large particles of impurities from within the energy storage cabinet or the external environment from entering the housing 10 and potentially damaging the first fan 60.

[0048] Optionally, a heat dissipation air inlet 16 and a heat dissipation air outlet 17 are provided on the housing 10 corresponding to the first cavity 101. Both the heat dissipation air inlet 16 and the heat dissipation air outlet 17 are used to connect the first cavity 101 to the external environment. The cooling device of the energy storage cabinet also includes a second fan 110. The second fan 110 is disposed within the first cavity 101 and is located at the heat dissipation air inlet 16. The condenser 30 is disposed at the heat dissipation air outlet 17. The second fan 110 can draw outside air into the first cavity 101 through the heat dissipation air inlet 16. After the air flows through the condenser 30, it flows out through the heat dissipation air outlet 17, which can improve the condensation effect of the condenser 30 and thereby improve the cooling efficiency of the compressor refrigeration system.

[0049] Another embodiment of the present invention provides an energy storage system comprising an energy storage cabinet and a cooling device for the energy storage cabinet according to the aforementioned embodiment. The energy storage cabinet is provided with an air inlet and an air outlet, which are respectively connected to an air outlet 13 and an air return vent 11 on a housing 10 of the energy storage cabinet cooling device. Because this energy storage system utilizes all of the technical solutions of the aforementioned embodiments, it possesses at least all of the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and a detailed description thereof will not be repeated here.

[0050] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A cooling device for an energy storage cabinet, characterized in that: It includes a housing (10), a compressor (20), a condenser (30), an expansion valve (40), an evaporator (50), and a first fan (60); The shell (10) is provided with a return air inlet (11), an air outlet (13) and at least one fresh air inlet (14); the return air inlet (11) is provided with a first damper (12) capable of opening or closing the return air inlet (11); the fresh air inlet (14) is provided with a second damper (15) capable of opening or closing the fresh air inlet (14); the return air inlet (11) and the air outlet (13) are both used to connect the interior of the shell (10) with the interior of the energy storage cabinet; the fresh air inlet (14) is used to connect the interior of the shell (10) with the external environment; The compressor (20), the condenser (30), the expansion valve (40) and the evaporator (50) are all arranged in the housing (10); the compressor (20), the condenser (30), the expansion valve (40) and the evaporator (50) are connected through a pipeline to form a loop; the evaporator (50) is arranged at the air outlet (13); The first fan (60) is disposed in the housing (10) and is used to guide the air entering the housing (10) to the air outlet (13).

2. The cooling device for the energy storage cabinet according to claim 1, characterized in that: The first damper (12) is hinged to the inner side wall of the housing (10), and the cooling device of the energy storage cabinet further comprises a first driving member (70), the first driving member (70) being transmission-connected to the first damper (12) and being used to drive the first damper (12) to rotate so as to open or close the return air port (11); The second damper (15) is hinged to the inner side wall of the shell (10), and the cooling device of the energy storage cabinet further includes a second driving member (80), which is transmission-connected to the second damper (15) and is used to drive the second damper (15) to rotate to open or close the fresh air inlet (14).

3. The cooling device for the energy storage cabinet according to claim 2, characterized in that: The first driving member (70) and the second driving member (80) are both telescopic motors. The output end of the first driving member (70) is connected to the first damper (12) via a flexible connection member. The output end of the first driving member (70) telescopically moves to drive the first damper (12) to rotate relative to the housing (10). The output end of the second driving member (80) is connected to the second damper (15) via a flexible connection member. The output end of the second driving member (80) telescopically moves to drive the second damper (15) to rotate relative to the housing (10).

4. The cooling device for an energy storage cabinet according to any one of claims 1 to 3, characterized in that: A first partition (90) and a second partition (100) are provided in the shell (10); the first partition (90) separates the space in the shell (10) into a first cavity (101) and a second cavity; the compressor (20) and the condenser (30) are both provided in the first cavity (101); The second partition (100) divides the second cavity into a first sub-cavity (102) and a second sub-cavity (103); the expansion valve (40) and the evaporator (50) are both arranged in the second sub-cavity (103); the return air inlet (11) and the fresh air inlet (14) are in communication with the first sub-cavity (102); and the air outlet (13) is in communication with the second sub-cavity (103); The first fan (60) is provided on the second partition plate (100) and is used to guide the air in the first sub-cavity (102) to the second sub-cavity (103).

5. The cooling device for the energy storage cabinet according to claim 4, characterized in that: The shell (10) is a rectangular structure, comprising a front panel, a rear panel, a left panel, a right panel, a top panel and a bottom panel, and the return air port (11) and the air outlet (13) are both arranged on the front panel.

6. The cooling device for the energy storage cabinet according to claim 5, characterized in that: The first partition plate (90) comprises a first plate segment (91), a second plate segment (92) and a third plate segment (93) connected in sequence from top to bottom, the first plate segment (91) is arranged parallel to the front panel, the second plate segment (92) is arranged obliquely from the bottom side of the first plate segment (91) toward the front panel, and the third plate segment (93) is arranged parallel to the bottom panel; The four sides of the second partition (100) are respectively connected to the front panel, the left panel, the right panel and the first panel segment (91); the first sub-cavity (102) is formed between the second partition (100) and the top panel; the second sub-cavity (103) is formed between the second partition (100) and the second panel segment (92) and the third panel segment (93).

7. The cooling device for the energy storage cabinet according to claim 6, characterized in that: The horizontal height of the side where the second partition (100) is connected to the front panel is lower than the horizontal height of the side where the second partition (100) is connected to the first plate section (91).

8. The cooling device for the energy storage cabinet according to claim 5, characterized in that: The fresh air inlets (14) are provided with two and are located on the left panel and the right panel respectively.

9. The cooling device for the energy storage cabinet according to claim 4, characterized in that: A heat dissipation air inlet (16) and a heat dissipation air outlet (17) are provided on the housing (10) corresponding to the first cavity (101); the heat dissipation air inlet (16) and the heat dissipation air outlet (17) are both used to connect the first cavity (101) with the external environment; The cooling device of the energy storage cabinet further comprises a second fan (110), the second fan (110) being arranged in the first cavity (101) and located at the heat dissipation air inlet (16), and the condenser (30) being arranged at the heat dissipation air outlet (17).

10. An energy storage system, characterized in that: The invention comprises an energy storage cabinet and a cooling device for the energy storage cabinet as claimed in any one of claims 1 to 9, wherein the energy storage cabinet is provided with an air inlet and an air outlet, and the air inlet and the air outlet of the energy storage cabinet are respectively connected to the air outlet (13) and the return air outlet (11) on the shell (10) of the energy storage cabinet cooling device.

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