Energy storage cabinet and energy storage system

Abstract

The utility model relates to an energy storage cabinet and an energy storage system, and belongs to the technical field of energy storage. The energy storage cabinet comprises a cabinet body, a first space and a second space are formed in the cabinet body in a spaced mode, the cabinet body comprises a cabinet top and a peripheral side part connected with the cabinet top, an air inlet is formed in the peripheral side part, an air outlet is formed in the cabinet top, and the air inlet and the air outlet are communicated with the second space; the battery module is arranged in the first space; the liquid cooling assembly comprises a heat dissipation unit which is arranged in the second space; and the fire-fighting assembly comprises an exhaust part, the exhaust part is arranged in the cabinet body, and the exhaust part is configured to be capable of extracting gas in the first space and conveying the gas to the second space. According to the liquid cooling assembly, through side air inlet and top air exhaust of the cabinet bodies, the cabinet bodies are tightly arranged in the side direction, the occupied space is reduced, meanwhile, the air outlet is shared by fire-fighting air exhaust and heat dissipation, and the influence between the adjacent cabinet bodies is reduced.

Description

Energy storage cabinets and energy storage systems Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an energy storage cabinet and an energy storage system. Background Technology

[0002] Currently, energy storage cabinets require the installation of battery modules and other equipment to achieve large-capacity energy storage. These devices generate significant heat during charging and discharging, necessitating a thermal management system for timely heat dissipation. To maximize energy storage capacity, energy storage cabinets are often grouped together to form a system. However, adjacent cabinets typically require spacing to create ventilation and heat dissipation spaces, undoubtedly increasing the overall space required for the energy storage system. Summary of the Invention

[0003] This application provides an energy storage cabinet to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, an energy storage cabinet is provided, comprising:

[0005] The cabinet has an internal partition forming a first space and a second space. The cabinet includes a top and a peripheral part connected to the top. The peripheral part is provided with an air inlet, and the top is provided with an air outlet. The air inlet and the air outlet are respectively connected to the second space.

[0006] The battery module is located in the first space;

[0007] The liquid cooling assembly includes a heat dissipation unit, which is disposed in the second space;

[0008] The fire protection component includes an exhaust fan located inside the cabinet and configured to extract gas from the first space and deliver it to the second space.

[0009] Optionally, the peripheral portion includes multiple side panels and a cabinet door disposed between two adjacent side panels. The cabinet door and the multiple side panels are distributed around the top of the cabinet, and the air inlet is disposed on the cabinet door.

[0010] Optionally, the fire-fighting assembly further includes a fire-fighting pipe assembly and a fire extinguishing medium storage device connected to the fire-fighting pipe assembly. The cabinet also has a third space, in which the fire extinguishing medium storage device is located, and the fire-fighting pipe assembly is configured to deliver the fire extinguishing medium toward the first space.

[0011] Optionally, the first space includes a plurality of spaced subspaces, the battery module includes a plurality of battery cells, and each of the subspaces is used to house the battery cells;

[0012] The fire-fighting pipe assembly includes a main pipe connecting to the fire extinguishing medium storage device and multiple branch pipes connecting to the main pipe, with each branch pipe corresponding to one of the subspaces.

[0013] Optionally, the top of the cabinet is provided with a pressure relief device, which is configured to break open the top of the cabinet when the pressure in the first space exceeds a threshold.

[0014] Optionally, the energy storage cabinet further includes an energy storage converter module, and a fourth space spaced apart from the first space is formed inside the cabinet, with the energy storage converter module located in the fourth space.

[0015] Optionally, the liquid cooling assembly further includes a liquid cooling pipe assembly connected to the heat dissipation unit, and the liquid cooling pipe assembly is configured to circulate coolant toward the battery module and the energy storage converter module, respectively.

[0016] Optionally, the energy storage cabinet further includes a power distribution module, which is located in the third space.

[0017] Optionally, the cabinet further includes a base, the base and the top of the cabinet are distributed in the height direction of the cabinet, and the top of the cabinet, the peripheral side and the base form the cabinet. A water immersion sensor is provided on the side of the base facing the top of the cabinet.

[0018] According to a second aspect of this application, an energy storage system is provided, comprising a plurality of the above-described energy storage cabinets, with the peripheral sides of adjacent energy storage cabinets abutting each other.

[0019] The energy storage cabinet in this embodiment includes a cabinet body, battery modules, a liquid cooling assembly, and a fire suppression assembly. The cabinet body internally forms a first space and a second space. The cabinet body includes a top and a peripheral portion connecting to the top. The peripheral portion has an air inlet, and the top has an exhaust outlet. The air inlet and exhaust outlet are respectively connected to the second space. The battery modules are located in the first space. The liquid cooling assembly includes a heat dissipation unit, which is located in the second space. The fire suppression assembly includes an exhaust fan, which is located inside the cabinet and configured to extract gas from the first space and deliver it to the second space. The heat dissipation unit receives air through the air inlet on the peripheral portion of the cabinet body and exhausts air through the exhaust outlet on the top. This allows for a laterally compact arrangement of adjacent cabinets without blocking their respective air inlets when multiple cabinets are arranged, reducing space occupancy. Simultaneously, the fire suppression assembly can share an exhaust outlet with the heat dissipation unit through the exhaust fan, thereby reducing the impact between adjacent cabinets.

[0020] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0023] Figure 1 is a schematic diagram of the overall structure of the energy storage cabinet provided in an embodiment of this application;

[0024] Figure 2 is a layout diagram of the modules inside the energy storage cabinet provided in an embodiment of this application;

[0025] Figure 3 is a diagram of the internal structure of the cabinet provided in an embodiment of this application;

[0026] Figure 4 is a structural schematic diagram of the fire-fighting pipe assembly and fire-extinguishing medium storage device provided in the embodiment of this application;

[0027] Figure 5 is a schematic diagram of the multi-cabinet arrangement provided in the embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Cabinet body; 11-First space; 111-Subspace; 12-Second space; 13-Third space; 14-Fourth space; 15-Cabinet top; 151-Exhaust vent; 152-Explosion relief component; 16-Side; 161-Air inlet; 162-Cabinet door; 163-Side panel; 17-Base; 171-Water immersion sensor; 18-Divider;

[0030] 2-Battery module; 21-Battery cell;

[0031] 3-Liquid cooling assembly; 31-Heat dissipation unit; 32-Liquid cooling pipe assembly;

[0032] 4-Fire protection components; 41-Exhaust system; 42-Fire protection piping assembly; 421-Main pipe; 422-Branch pipe; 423-Sprinkler system; 43-Fire extinguishing medium storage system; 44-Compartment-level sprinkler head;

[0033] 5-Energy storage converter module;

[0034] 6-Power distribution module;

[0035] X - Height direction; Y - Width direction; Z - Length direction. Detailed Implementation

[0036] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0037] Energy storage systems typically include battery modules and power conversion systems (PCS). Both battery modules and power conversion systems generate significant heat during high-power charging and discharging, necessitating a thermal management system for timely heat dissipation. To maximize energy storage capacity, energy storage cabinets are often grouped together to form a system. However, adjacent cabinets typically require spacing to create ventilation and heat dissipation spaces, undoubtedly increasing the overall space required for the energy storage system.

[0038] Furthermore, when battery modules and energy storage converters are integrated into an energy storage cabinet, the heat generated by the energy storage converter can easily cause a decrease in the temperature uniformity of the battery modules, affecting battery performance. Simultaneously, the heat from the battery modules can also impair the heat dissipation effect of the energy storage converter.

[0039] In view of the above, referring to Figures 1 to 5, embodiments of this application provide an energy storage cabinet to overcome at least one of the above-mentioned technical problems.

[0040] This application provides an energy storage cabinet. Please refer to Figures 1 to 5. Figure 1 is a schematic diagram of the overall structure of the energy storage cabinet provided in the embodiment of this application. Figure 2 is a layout diagram of each module in the energy storage cabinet provided in the embodiment of this application. Figure 3 is a structural diagram of the cabinet 1 provided in the embodiment of this application. Figure 4 is a schematic diagram of the structure of the fire-fighting pipe assembly 42 and the fire-extinguishing medium storage component 43 provided in the embodiment of this application. Figure 5 is a schematic diagram of the structure of the multiple cabinets 1 arranged in the embodiment of this application.

[0041] It should be noted that the following embodiments of this application introduce intersecting height direction X, width direction Y, and length direction Z. Specifically, height direction X is approximately parallel to the overall height direction of the energy storage cabinet, width direction Y is approximately parallel to the overall width direction of the energy storage cabinet, and length direction Z is approximately parallel to the overall length direction of the energy storage cabinet.

[0042] Referring to Figures 1, 3 and 4, the energy storage cabinet includes a cabinet body 1, a battery module 2, a liquid cooling component 3 and a fire-fighting component 4.

[0043] The cabinet 1 has an internal partition forming a first space 11 and a second space 12. The cabinet 1 includes a top 15 and a peripheral portion 16 connecting to the top 15. The peripheral portion 16 has an air inlet 161, and the top 15 has an exhaust outlet 151. The air inlet 161 and the exhaust outlet 151 are respectively connected to the second space 12. A battery module 2 is located in the first space 11. A liquid cooling assembly 3 includes a heat dissipation unit 31, which is located in the second space 12. A fire suppression assembly 4 includes an exhaust fan 41, which is located inside the cabinet 1 and configured to extract gas from the first space 11 and deliver it to the second space 12.

[0044] The cooling unit 31 draws in air through the air inlet 161 located on the side 16 of the cabinet 1 and exhausts air through the exhaust outlet 151 located on the top 15 of the cabinet to achieve air-cooled heat dissipation. When multiple cabinets 1 are arranged, adjacent cabinets 1 can be arranged laterally and closely without blocking their respective air inlets 161, which helps to reduce space occupation. At the same time, the fire-fighting component 4 can share the exhaust outlet 151 with the cooling unit 31 through the exhaust fan 41. The exhaust fan 41 can be set as an exhaust fan, and the exhaust from the top of the cabinet 1 helps to reduce the impact of exhaust between adjacent cabinets 1.

[0045] In some embodiments, referring to FIG1, the peripheral side portion 16 includes a plurality of side panels 163 and a cabinet door 162 disposed between adjacent side panels 163. The cabinet door 162 and the plurality of side panels 163 are distributed around the top 15 of the cabinet, and an air inlet 161 is disposed on the cabinet door 162. By arranging the air inlet 161 on the cabinet door 162, the arrangement of adjacent cabinets 1 can be such that the side panel 163 of one cabinet facing away from the cabinet door 162 is attached to the side panel 163 of another cabinet facing away from the cabinet door 162, or the side panel 163 of one adjacent cabinet door 162 is attached to the side panel 163 of another adjacent cabinet door 162. That is, multiple cabinets 1 can be arranged in a back-to-back, side-by-side arrangement, which helps to reduce the space occupied when multiple cabinets 1 are arranged.

[0046] In some embodiments, referring to Figures 2, 3, and 4, the fire-fighting assembly 4 further includes a fire-fighting pipe assembly 42 and a fire-extinguishing medium storage unit 43 connected to the fire-fighting pipe assembly 42. The cabinet 1 also has a third space 13, which is disposed below the second space 12 along the height direction X. The fire-extinguishing medium storage unit 43 is disposed in the third space 13, and the fire-fighting pipe assembly 42 is configured to deliver fire-extinguishing medium toward the first space 11. Specifically, the cabinet 1 is provided with a partition 18, which can separate the first space 11 and the second space 12, as well as the second space 12 and the third space 13. The aforementioned exhaust unit 41 can also be fixed to the partition 18 between the first space 11 and the second space 12. The fire-extinguishing medium storage unit 43 can use aerosol fire-extinguishing media, etc., and its fire-extinguishing principle is prior art, which will not be described further here.

[0047] In some embodiments, referring to Figures 2, 3, and 4, the first space 11 includes a plurality of spaced subspaces 111 arranged in the vertical direction X. The battery module 2 includes a plurality of battery units 21, and each subspace 111 is provided with a battery unit 21. The fire hose assembly 42 includes a main pipe 421 connected to the fire extinguishing medium storage unit 43 and a plurality of branch pipes 422 connected to the main pipe 421, each branch pipe 422 corresponding to a subspace 111. Each branch pipe 422 is connected to a spray element 423 for spraying fire extinguishing medium into the subspace 111, so as to expand the spray range of the fire extinguishing medium. By dividing the first space 11 into a plurality of subspaces 111, the plurality of battery units 21 are arranged independently and provided with their own independent branch pipes 422, thereby improving the convenience of maintenance, heat dissipation, and fire protection effect of each battery unit 21.

[0048] In addition, in some embodiments, referring to Figures 3 and 4, the fire hose assembly 42 also includes compartment-level sprinklers 44. Multiple compartment-level sprinklers 44 can be arranged along the height direction X. The number of compartment-level sprinklers 44 can be the same as the number of branch pipes 422 and arranged close to the cabinet door 162, which is conducive to further improving the fire protection effect.

[0049] In some embodiments, referring to FIG1, the top 15 of the cabinet is provided with a pressure relief element 152. The pressure relief element 152 is configured to break open the top 15 of the cabinet when the pressure in the first space 11 exceeds a threshold. The pressure relief principle of the pressure relief element 152 is prior art and will not be described in detail here. When the battery module 2 experiences thermal runaway, on the one hand, the exhaust element 41 can be used to drive the high-temperature gas generated in the first space 11 to be discharged through the exhaust port 151; on the other hand, when the pressure in the first space 11 exceeds the threshold, the pressure relief element 152 can be used to expand the exhaust passage in time, thereby improving the safety of the energy storage cabinet.

[0050] In some embodiments, referring to Figures 1, 2, and 3, the cabinet 1 further includes a base 17. The base 17 and the top 15 are distributed along the height direction X of the cabinet 1. The top 15, the peripheral side 16, and the base 17 form the cabinet 1. A water immersion sensor 171 is provided on the side of the base 17 facing the top 15. The working principle of the water immersion sensor 171 is prior art and will not be described in detail here. By setting the water immersion sensor 171 in the base 17, it is beneficial to detect the presence of water accumulation in the base 17 in a timely manner, so as to clean up the water in a timely manner and reduce damage to the equipment inside the cabinet 1.

[0051] In some embodiments, referring to Figures 2 and 3, the energy storage cabinet further includes an energy storage converter module 5, and a fourth space 14 spaced apart from the first space 11 is formed inside the cabinet 1. The fourth space 14 is located below the first space 11 in the height direction X, and the energy storage converter module 5 is located in the fourth space 14. The structural principle of the energy storage converter module 5 is prior art and will not be described in detail here.

[0052] In some embodiments, referring to FIG2, the liquid cooling assembly 3 further includes a liquid cooling pipe assembly 32, which is connected to the heat dissipation unit 31. The liquid cooling pipe assembly 32 is configured to circulate coolant to the battery module 2 and the energy storage converter module 5 respectively. Specifically, in this embodiment, each battery cell 21 is equipped with an independent liquid cooling pipe assembly 32. The liquid cooling pipe assemblies 32 of each battery cell 21 and the energy storage converter module 5 are connected in parallel. The cooling medium is cooled by the heat dissipation unit 31 and then circulates through the liquid cooling pipe assembly 32 to connect the battery cell 21 and the energy storage converter module 5, which is beneficial to improving the heat dissipation effect of the battery module 2 and the energy storage converter module 5, as well as the temperature uniformity of each battery cell 21.

[0053] In some embodiments, referring to Figures 2 and 3, the energy storage cabinet further includes a power distribution module 6, which is located in the third space 13. The wiring and operating principles of the power distribution module 6, battery module 2, and energy storage converter module 5 are existing technologies and will not be described in detail here. The power distribution module 6 shares the third space 13 with the fire extinguishing medium storage device 43, which is beneficial to improving the space utilization rate inside the cabinet 1.

[0054] This application provides an energy storage system comprising multiple energy storage cabinets as described above. It is understood that this energy storage system possesses all the technical features and effects of the aforementioned energy storage cabinets, which will not be repeated here. For example, referring to Figures 1 and 5, the cabinet bodies 1 of the multiple energy storage cabinets are arranged sequentially along the second direction Y, with the peripheral sides 16 of adjacent cabinet bodies 1 abutting each other. This arrangement allows multiple cabinet bodies 1 to be arranged side-by-side, while ensuring that each cabinet body 1 can have side air intake and top air exhaust, thus reducing the space occupied by the multiple cabinet bodies 1. It is understood that in other embodiments, two adjacent cabinet bodies 1 can also be arranged simultaneously along the third direction Z. The two cabinet bodies 1 arranged along the third direction Z only need to have their air inlets 161 facing away from each other to avoid interfering with the air intake of their respective cabinet bodies 1. This allows multiple cabinet bodies 1 to be arranged back-to-back and side-by-side, further reducing the overall space occupied by the energy storage system.

[0055] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0057] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An energy storage cabinet, characterized in that, include: The cabinet (1) has a first space (11) and a second space (12) formed by internal partitions. The cabinet (1) includes a cabinet top (15) and a peripheral part (16) connected to the cabinet top (15). The peripheral part (16) is provided with an air inlet (161). The cabinet top (15) is provided with an air outlet (151). The air inlet (161) and the air outlet (151) are respectively connected to the second space (12). The battery module (2) is located in the first space (11). The liquid cooling component (3) includes a heat dissipation unit (31) located in the second space (12). The fire-fighting component (4) includes an exhaust component (41) located inside the cabinet (1) and configured to extract gas from the first space (11) and deliver it to the second space (12).

2. The energy storage cabinet according to claim 1, characterized in that, The peripheral side (16) includes a plurality of side panels (163) and a cabinet door (162) disposed between two adjacent side panels (163). The cabinet door (162) and the plurality of side panels (163) are distributed around the top of the cabinet (15), and the air inlet (161) is disposed on the cabinet door (162).

3. The energy storage cabinet according to claim 2, characterized in that, The fire-fighting assembly (4) also includes a fire-fighting pipe assembly (42) and a fire extinguishing medium storage unit (43) connected to the fire-fighting pipe assembly (42). The cabinet (1) also has a third space (13), the fire extinguishing medium storage unit (43) is located in the third space (13), and the fire-fighting pipe assembly (42) is configured to deliver fire extinguishing medium toward the first space (11).

4. The energy storage cabinet according to claim 3, characterized in that, The first space (11) includes multiple spaced subspaces (111), the battery module (2) includes multiple battery units (21), and each of the subspaces (111) is used to house the battery units (21); the fire extinguishing pipe assembly (42) includes a main pipe (421) connected to the fire extinguishing medium storage device (43) and multiple branch pipes (422) connected to the main pipe (421), and each branch pipe (422) is connected to one of the subspaces (111).

5. The energy storage cabinet according to claim 3, characterized in that, The top of the cabinet (15) is provided with a pressure relief device (152), which is configured to break the top of the cabinet (15) when the pressure in the first space (11) exceeds a threshold.

6. The energy storage cabinet according to any one of claims 1 to 5, characterized in that, The energy storage cabinet also includes an energy storage converter module (5), and a fourth space (14) is formed inside the cabinet (1) that is spaced apart from the first space (11), and the energy storage converter module (5) is located in the fourth space (14).

7. The energy storage cabinet according to claim 6, characterized in that, The liquid cooling assembly (3) further includes a liquid cooling pipe assembly (32) connected to the heat dissipation unit (31), and the liquid cooling pipe assembly (32) is configured to circulate coolant toward the battery module (2) and the energy storage converter module (5), respectively.

8. The energy storage cabinet according to claim 3, characterized in that, The energy storage cabinet also includes a power distribution module (6), which is located in the third space (13).

9. The energy storage cabinet according to claim 3, characterized in that, The cabinet (1) also includes a base (17), the base (17) and the top of the cabinet (15) are distributed in the height direction (X) of the cabinet (1), and the top of the cabinet (15), the peripheral side (16) and the base (17) form the cabinet (1). A water immersion sensor (171) is provided on the side of the base (17) facing the top of the cabinet (15).

10. An energy storage system, characterized in that, It includes multiple energy storage cabinets as described in any one of claims 1 to 9, with the peripheral sides (16) of adjacent energy storage cabinets abutting each other.

Images