Energy storage cabin

Abstract

The utility model provides an energy storage cabin which comprises a cabin body and a plurality of module assemblies arranged in the cabin body. The interior of the cabin body is divided into a battery chamber and a high-voltage chamber, and the module assemblies are transversely arranged in the battery chamber; the module assembly comprises a plurality of battery modules which are stacked in the height direction, so that the battery modules are arranged in the battery chamber in rows and columns; each battery module has a first combination mode and a second combination mode; in the first combination mode, the battery modules in any row are connected in series to form a first battery cluster; in the second combination mode, the preset number of battery modules in any module assembly are connected in series to form a second battery cluster; a plurality of high-voltage boxes in one-to-one correspondence with the battery clusters and two confluence cabinets are arranged in the high-voltage chamber, and an energy storage converter connected with each battery cluster is arranged in each confluence cabinet. According to the energy storage cabin disclosed by the utility model, the voltage grade of the energy storage cabin can be changed by changing the combination mode of the battery modules, so that the universality of the energy storage cabin is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to an energy storage cabin. Background Art

[0002] Clean energy is an inevitable trend in energy development. However, clean energy generation is intermittent and unstable, and its integration into the grid significantly impacts grid stability. With the advancement of battery technology, energy storage is gaining increasing attention as a key means of stabilizing grid power and shifting peak loads. Existing energy storage devices typically utilize energy storage capsules, which are widely used due to their compact design and ease of transport and mobility.

[0003] Generally, energy storage cabins usually have different voltage levels, such as 1000V energy storage cabins, 1500V energy storage cabins, and 2000V energy storage cabins, and with the advancement of technology, the voltage level of energy storage cabins is also constantly improving. Usually, the number of battery clusters in energy storage cabins of different voltage levels is different, and the number of series and parallel connections of each battery cluster is also different. The connection method of each battery module and battery cluster in the existing energy storage cabin is fixed, and can only have one voltage level. It is impossible to change the voltage level of the energy storage cabin itself according to actual usage. Therefore, it is difficult to construct energy storage systems of different voltage levels according to actual needs, and the versatility is poor. Utility Model Content

[0004] In view of this, the present invention aims to propose an energy storage cabin that can change the voltage level of the energy storage cabin by changing the combination of battery modules, thereby improving the versatility of the energy storage cabin.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A energy storage cabin comprises a cabin body and a plurality of module assemblies arranged in the cabin body; the interior of the cabin body is divided into a battery chamber and a high-voltage chamber, and each of the module assemblies is arranged horizontally in the battery chamber; the module assembly comprises a plurality of battery modules stacked along the height direction, so that each of the battery modules is arranged in rows and columns in the battery chamber; each of the battery modules has a first combination mode and a second combination mode; in the first combination mode, each of the battery modules in any row is connected in series to form a first battery cluster; in the second combination mode, a preset number of multiple battery modules in any module assembly are connected in series to form a second battery cluster; the high-voltage chamber is provided with a plurality of high-voltage boxes corresponding to each of the battery clusters, and two junction cabinets, each of the junction cabinets is provided with an energy storage converter for connecting to each of the battery clusters.

[0007] Furthermore, the cabin is also separated by an equipment room, in which fire-fighting equipment is installed; the battery room is provided with a nozzle connected to the fire-fighting equipment, and the fire-fighting equipment can spray fire extinguishing agent on each of the module assemblies through the nozzle.

[0008] Furthermore, the battery chamber is divided into multiple compartments by multiple bulkheads, each compartment is provided with at least one module assembly, and the top of each compartment is provided with the nozzle.

[0009] Furthermore, the battery module includes a plurality of battery cells and a battery cell tray for supporting each of the battery cells; the battery cell tray includes a base plate, a pair of frames provided on opposite sides of the base plate, and a pair of end plates provided on the other two sides of the base plate; each of the battery cells is stacked in parallel along the length direction of the base plate, and a partition is sandwiched between two adjacent battery cells; the equipment room is also provided with a cooling device for cooling each of the battery modules, and a cooling flow channel connected to the cooling device is formed in the base plate.

[0010] Furthermore, the partition is made of heat-insulating material.

[0011] Furthermore, between two adjacent battery modules, the bottom plate of the upper battery module can abut against the top of each battery cell of the lower battery module.

[0012] Furthermore, the frame includes two horizontal beams spaced apart and arranged in parallel along the height direction of the battery cell tray, and a plurality of longitudinal beams spaced apart between the two horizontal beams.

[0013] Furthermore, the bottom plate is provided with a liquid inlet and a liquid outlet communicating with the cooling channel and used for connecting to the cooling device, and the liquid inlet and the liquid outlet are both located at the same end of the bottom plate.

[0014] Furthermore, the module assembly also includes a liquid inlet main pipe and a liquid outlet main pipe connected to the cooling equipment; the upper branch of the liquid inlet main pipe forms a plurality of liquid inlet branches connected to each of the liquid inlets; the upper branch of the liquid outlet main pipe forms a plurality of liquid outlet branches connected to each of the liquid outlets.

[0015] Furthermore, the module assembly also includes a module tray and side panels arranged on both sides of the module tray; the module tray can support each of the battery modules, and the two side panels can constrain each of the battery modules in the lateral direction.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The energy storage cabin described in the present invention, by setting up a combination of two battery modules, enables this embodiment to select different combination methods, and each battery module is composed into a battery cluster of different specifications. Then, by changing the specifications of the battery cluster, the voltage level of the energy storage cabin of this embodiment is changed, so that the energy storage cabin can constitute an energy storage system of different voltage levels, thereby improving the versatility of the energy storage cabin.

[0018] By installing fire-fighting equipment in the equipment room and sprinklers in the battery room, when a battery module catches fire, fire extinguishing agent can be sprayed onto the burning battery module to extinguish the fire of the burning battery cluster, thereby improving the safety of the energy storage cabin.

[0019] The battery chamber is divided into multiple compartments by bulkheads, which can separate the module assemblies. When thermal runaway occurs in any battery module, the thermal runaway can be controlled in one compartment, thereby preventing the thermal runaway from spreading to all battery modules and improving the safety performance of the energy storage cabin.

[0020] The bottom plate of the battery cell tray is provided with a cooling channel connected to the cooling equipment, so that the coolant can circulate in the cooling channel, thereby cooling each battery cell of the battery module, ensuring the normal operation of the battery module and reducing the risk of thermal runaway of the battery module.

[0021] The partitions made of thermal insulation material have good thermal insulation performance to reduce the heat transfer between two adjacent battery cells, avoiding the overall temperature of each battery cell being too high due to heat transfer, thereby reducing the operating temperature of each battery cell.

[0022] Between two adjacent battery modules, the upper base plate can abut against the top of each battery cell in the lower battery module, so that one base plate can cool each battery cell in two adjacent battery modules at the same time, increasing the cooling area to further improve the cooling effect of each battery cell.

[0023] The liquid inlet and the liquid outlet are located at the same end of the base plate, which can concentrate the liquid inlet and the liquid outlet on one side, making it easy to connect with the cooling equipment through pipes, thereby facilitating the assembly and maintenance of the battery module.

[0024] By setting up the liquid inlet main pipe and the liquid outlet main pipe, the coolant can be transported to each base plate through the liquid inlet main pipe, and the coolant discharged from each base plate is converged into the liquid outlet main pipe and returned to the cooling equipment, reducing the use of pipelines and facilitating the connection of the liquid inlet and outlet of each base plate with the cooling equipment.

[0025] The module tray and side panels can stably support each battery module and constrain the battery modules to prevent the stacked battery modules from tipping over, thereby improving the stacking stability of the battery modules and thus improving the overall structural strength of the module assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of the energy storage cabin according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the energy storage cabin according to an embodiment of the present utility model from a top view;

[0029] Figure 3 This is a schematic diagram of the internal structure of the energy storage compartment of the battery module according to an embodiment of the present utility model in a first combination mode;

[0030] Figure 4 This is a schematic diagram of the internal structure of the energy storage compartment of the battery module according to an embodiment of the present utility model in the second combination mode;

[0031] Figure 5 This is a schematic structural diagram of a battery module according to an embodiment of the present utility model;

[0032] Figure 6 This is a schematic structural diagram of the module assembly according to an embodiment of the present utility model;

[0033] Figure 7 For the utility model Figure 6 A magnified view of the position shown in middle A;

[0034] Description of reference numerals:

[0035] 1. Cabin;

[0036] 101. Battery room; 102. High-voltage room; 103. Equipment room; 104. Hatch door; 105. Bulkhead;

[0037] 2. Module assembly;

[0038] 201, liquid inlet main pipe; 2011, liquid inlet branch pipe;

[0039] 202, main liquid outlet pipe; 2021, branch liquid outlet pipe;

[0040] 203, module tray; 204, side panel; 205, liquid cooling plate;

[0041] 3. Battery module; 3a. First battery cluster; 3b. Second battery cluster;

[0042] 301, battery cell;

[0043] 302, bottom plate; 3021, liquid inlet; 3022, liquid outlet;

[0044] 303, frame; 3031, crossbeam; 3032, longitudinal beam;

[0045] 304, end plate;

[0046] 4. High-voltage box; 5. Combiner cabinet; 6. Fire-fighting equipment; 7. Sprinkler; 8. Cooling equipment. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0048] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0049] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0050] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connection," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0051] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0052] This embodiment relates to an energy storage cabin, the overall structure of which is as follows: Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, this embodiment includes a cabin body 1 and a plurality of module assemblies 2.

[0053] The interior of the cabin 1 is divided into a battery chamber 101 and a high-voltage chamber 102, and the module assemblies 2 are arranged horizontally in the battery chamber 101. The module assembly 2 includes multiple battery modules 3 stacked along the height direction, so that the battery modules 3 are arranged in rows and columns in the battery chamber 101.

[0054] Each battery module 3 has a first combination mode and a second combination mode.

[0055] In the first combination mode, if Figure 3 As shown, each battery module 3 in any row is connected in series to form a first battery cluster 3a; and in the second combination mode, as shown Figure 4 As shown, a preset number of battery modules 3 in any battery module assembly 2 are connected in series to form a second battery cluster 3 b.

[0056] A plurality of high-voltage boxes 4 corresponding to each battery cluster and two combiner cabinets 5 are provided in the high-voltage chamber 102 . Each combiner cabinet 5 is provided with an energy storage converter for connecting to each battery cluster.

[0057] As set above, by setting two combinations of battery modules 3, this embodiment can select different combinations to form battery clusters of different specifications of each battery module 3, and then change the voltage level of the energy storage cabin of this embodiment by changing the specifications of the battery cluster, so that the energy storage cabin can constitute an energy storage system of different voltage levels, thereby improving the versatility of the energy storage cabin.

[0058] Based on the above overview, specifically, the electrical clearance between each battery module 3 and other electrical components within the energy storage compartment of this embodiment is 14 mm to meet the safety requirements of energy storage compartments at different voltage levels. In this embodiment, to increase the capacity of the energy storage compartment, seven module assemblies 2 can be installed in the compartment body 1, and each module assembly 2 is equipped with ten stacked battery modules 3, thereby increasing the electrical capacity of the energy storage compartment.

[0059] This embodiment utilizes either the first or second combination method for each battery module 3, allowing the battery modules 3 to form battery clusters of different specifications, thereby varying the voltage level of the energy storage compartment. For example, the battery modules 3 of this embodiment may utilize a 1P77S combination method. When the first combination method is used, the battery modules 3 in any row, i.e., seven battery modules 3 in the horizontal direction, are connected in series to form a first battery cluster 3a, i.e., a 1P539S 2000V battery cluster. When the second combination method is used, a predetermined number of battery modules 3 in any module assembly 2, i.e., five such battery modules 3, are connected in series to form a second battery cluster 3b, i.e., a 1P385S 1500V battery cluster.

[0060] Thus, by adopting the first or second combination mode, the energy storage cabin of this embodiment can form a 2000V energy storage system or a 1500V energy storage system. Furthermore, when adopting the first combination mode, the energy storage cabin has 10 first battery clusters 3a, and the corresponding high-voltage boxes 4 are configured in a one-to-one correspondence with each first battery cluster 3a. When adopting the second combination mode, the energy storage cabin has 14 second battery clusters 3b, and the corresponding high-voltage boxes 4 are configured in a one-to-one correspondence with each second battery cluster 3b.

[0061] Of course, this embodiment can also adopt battery modules 3 of other specifications, and adopt other combinations of battery modules 3 to form battery clusters of different specifications to construct energy storage systems of different voltage levels, thereby improving the versatility of the energy storage cabin of this embodiment.

[0062] In addition, in this embodiment, Figure 2 As shown, since a large number of battery modules 3 are provided, the battery modules 3 are combined to form a large number of battery clusters. Therefore, in order to ensure the normal operation of the energy storage cabin, two junction cabinets 5 are provided in this embodiment, and each battery cluster is divided into two parts. Each battery cluster is controlled and managed respectively by two energy storage converters in the two junction cabinets 5, which can reduce the inter-cluster circulation. At the same time, when any junction cabinet 5 and the battery cluster connected to it fail, the other junction cabinet 5 and the other battery clusters can operate normally.

[0063] In addition, the cabin 1 of this embodiment can be a rectangular container cabin 1 for easy transportation. The cabin 1 of this embodiment is also equipped with multiple doors 104 for workers to enter the cabin 1 to install equipment or perform maintenance work. In practice, the doors 104 are all located on the same side of the cabin 1 to support the back-to-back layout of multiple energy storage cabins, reducing floor space.

[0064] In order to prevent the battery module 3 from catching fire due to thermal runaway and causing a safety accident, the cabin body 1 of this embodiment is further separated into an equipment room 103, and the equipment room 103 is provided with a fire-fighting equipment 6. A nozzle 7 connected to the fire-fighting equipment 6 is provided in the battery chamber 101, and the fire-fighting equipment 6 can spray the fire-extinguishing agent on each module assembly 2 through the nozzle 7. By setting the fire-fighting equipment 6 and the nozzle 7, when the battery module 3 catches fire, the fire-extinguishing agent can be sprayed on the burning battery module 3 to extinguish the fire of the burning battery cluster, thereby improving the safety of the energy storage cabin. In specific implementation, the fire-extinguishing agent of this embodiment can adopt conventional fire-extinguishing agents that can be used for battery fire extinguishing, which are well known to those skilled in the art, such as perfluorohexanone fire-extinguishing agent, etc., which can be used to extinguish the fire of the battery module 3 when it catches fire.

[0065] Because the energy storage compartment of this embodiment houses a large number of battery modules 3, if any one battery module 3 experiences thermal runaway, the thermal runaway of that battery module 3 is likely to spread to other adjacent battery modules 3, causing the thermal runaway to spread. Since the battery modules 3 are relatively densely arranged, thermal runaway spreads rapidly. Simply spraying fire extinguishing agent from the nozzles 7 is unlikely to quickly control the fire in the battery modules 3. This can lead to fires in all battery modules 3 within the compartment 1, and even explosion of the entire energy storage compartment due to the battery fire, resulting in a safety accident.

[0066] Therefore, to prevent thermal runaway from spreading to all battery modules 3 when a battery module 3 experiences thermal runaway, the battery chamber 101 of this embodiment is divided into multiple compartments by multiple bulkheads 105. Each compartment houses at least one module assembly 2, and each compartment is equipped with a nozzle 7 on its top. By providing bulkheads 105 to separate the multiple compartments, the module assemblies 2 can be isolated. If thermal runaway occurs in any battery module 3, the runaway can be contained within a single compartment, thereby preventing the runaway from spreading to all battery modules 3 and improving the safety performance of the energy storage compartment.

[0067] In this embodiment, if Figure 5 As shown, the battery module 3 includes multiple battery cells 301 and a battery cell 301 tray for supporting each battery cell 301. The battery cell 301 tray includes a base plate 302, a pair of frame frames 303 provided on opposite sides of the base plate 302, and a pair of end plates 304 provided on the other sides of the base plate 302. The frame frames 303 support the base plate 302 of the upper battery module 3 when the battery modules 3 are stacked. The battery cells 301 are stacked parallel to each other along the length of the base plate 302, with partitions sandwiched between adjacent battery cells 301. The equipment chamber 103 also includes a cooling device 8 for cooling each battery module 3. The base plate 302 includes a cooling channel connected to the cooling device 8. Through the provision of the cooling device 8 and the cooling channel within the base plate 302, coolant can circulate within the cooling channel, thereby cooling each battery cell 301 of the battery module 3, ensuring the normal operation of the battery module 3 and reducing the risk of thermal runaway of the battery module 3.

[0068] To reduce the operating temperature of each battery cell 301, the separators in this embodiment are made of a thermally insulating material. It is understood that when the battery module 3 is operating, the heat generated by each battery cell 301 is transferred to each other through the separators, causing the overall temperature of each battery cell 301 to rise, thereby affecting the operating performance of the battery module 3. Alternatively, if any battery cell 301 is operating abnormally and its temperature rises, that is, if that battery cell 301 is in a thermal runaway state, the high heat generated by that battery cell 301 can easily be transferred to other battery cells 301 through the separators, thereby increasing the risk of thermal runaway spreading from that battery cell 301.

[0069] Therefore, by using a separator made of a thermal insulation material with good thermal insulation performance, heat transfer between two adjacent battery cells 301 is reduced, preventing the overall temperature of each battery cell 301 from being too high due to heat transfer, thereby reducing the operating temperature of each battery cell 301 and ensuring the normal operation of the battery module 3. In specific implementations, the thermal insulation material of this embodiment can be conventional thermal insulation materials well known to those skilled in the art, such as aerogel, phase change material, ceramic silicone rubber, etc., as long as the separator has good thermal insulation performance.

[0070] To further improve the cooling effect on each battery cell 301, in this embodiment, between two adjacent battery modules 3, the bottom plate 302 of the upper battery module 3 can abut the tops of each battery cell 301 in the lower battery module 3. This allows a single bottom plate 302 to simultaneously cool each battery cell 301 in two adjacent battery modules 3, increasing the cooling area and further improving the cooling effect on each battery cell 301. In a specific implementation, in the module assembly 2, a liquid cooling plate 205 is provided on the top of the top battery module 3, and this liquid cooling plate 205 is connected to the cooling device 8, so that both the top and bottom of each battery cell 301 in each battery module 3 can be cooled.

[0071] Since the battery modules 3 in the module assembly 2 are stacked in the height direction, the battery modules 3 closer to the bottom need to withstand greater pressure. Therefore, in order to improve the stability of the stacking of the battery modules 3 and prevent some battery modules 3 from being crushed and damaged due to pressure, the frame 303 of this embodiment includes two horizontal beams 3031 spaced and arranged in parallel along the height direction of the battery cell 301 tray, and a plurality of longitudinal beams 3032 spaced between the two horizontal beams 3031. By providing the horizontal beams 3031 and the longitudinal beams 3032, a frame structure of the frame 303 is formed, which improves the structural strength and load-bearing capacity of the frame 303, thereby improving the stability of the battery modules 3 when stacked. In addition, the frame 303 is composed of the horizontal beams 3031 and the longitudinal beams 3032 and has a hollow structure. While improving the heat dissipation effect of each battery cell 301, it can also facilitate the connection of the busbar to each battery cell 301 and the arrangement of other electrical components.

[0072] In addition, the bottom plate 302 of this embodiment is provided with a liquid inlet 3021 and a liquid outlet 3022 that are connected to the first cooling channel and are used to connect to the cooling device 8, and the liquid inlet 3021 and the liquid outlet 3022 are both located at the same end of the bottom plate 302. Through the above arrangement, the liquid inlet 3021 and the liquid outlet 3022 can be concentrated on one side, which is convenient for connection with the cooling device 8 through pipes, thereby facilitating the assembly and maintenance of the battery module 3. In a specific implementation, the end plate 304 separates the liquid inlet 3021 and the liquid outlet 3022 from each battery cell 301. If coolant leaks at the liquid inlet 3021 and the liquid outlet 3022, the end plate 304 can block the coolant and prevent the coolant from causing a short circuit in the battery cell 301, thereby improving the safety performance of the battery module 3, that is, the energy storage compartment.

[0073] In order to further facilitate the connection of the bottom plate 302 of each battery module 3 with the cooling device 8, as shown in FIG. Figure 6 and Figure 7 As shown, the module assembly 2 of this embodiment also includes a liquid inlet manifold 201 and a liquid outlet manifold 202 connected to the cooling device 8. The liquid inlet manifold 201 branches out to form a plurality of liquid inlet branches connected to each liquid inlet 3021. The liquid outlet manifold 202 branches out to form a plurality of liquid outlet branches connected to each liquid outlet 3022. By setting the liquid inlet manifold 201 and the liquid outlet manifold 202, the coolant can be transported to each base plate 302 through the liquid inlet manifold 201, and the coolant discharged from each base plate 302 can be converged into the liquid outlet manifold 202 and returned to the cooling device 8, thereby reducing the use of pipes and facilitating the connection of the liquid inlet 3021 and the liquid outlet 3022 of each base plate 302 with the cooling device 8, thereby facilitating the assembly operation of the module assembly 2.

[0074] In practice, a liquid cooling plate 205 is installed at the top of the module assembly 2. To facilitate connection of the liquid cooling plate 205 to the coolant circulation pipeline, in this embodiment, a tee structure is provided on the liquid inlet branch pipe 2011 and the liquid outlet branch pipe 2021 connected to the bottom plate 302 of the battery module 3 located at the top. Through the provision of two tee joints, the liquid inlet 3021 of the bottom plate 302 and the coolant inlet of the liquid cooling plate 205 can be connected to the liquid inlet main pipe 201, while the liquid outlet 3022 of the bottom plate 302 and the coolant outlet of the liquid cooling plate 205 can be connected to the liquid outlet main pipe 202, thereby facilitating the connection of the liquid cooling plate 205 to the cooling device 8.

[0075] Finally, to enhance the overall structural strength of the module assembly 2, the module assembly 2 of this embodiment further includes a module tray 203 and side panels 204 disposed on either side of the module tray 203. The module tray 203 is capable of supporting each battery module 3, and the two side panels 204 are capable of constraining each battery module 3 in the lateral direction. The module tray 203 and side panels 204 provide stable support for each battery module 3 and constrain the battery modules 3, preventing the stacked battery modules 3 from tipping over. This improves the stacking stability of the battery modules 3 and thereby enhances the overall structural strength of the module assembly 2.

[0076] In summary, the energy storage cabin of this embodiment, by setting up two combinations of battery modules 3, allows this embodiment to select different combinations, and each battery module 3 is composed into battery clusters of different specifications, and then the voltage level of the energy storage cabin of this embodiment is changed by changing the specifications of the battery cluster, so that the energy storage cabin can constitute an energy storage system of different voltage levels, thereby improving the versatility of the energy storage cabin.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An energy storage cabin, characterized in that: It includes a cabin body and a plurality of module assemblies arranged in the cabin body; The interior of the cabin is divided into a battery chamber and a high-voltage chamber, and each of the module assemblies is arranged horizontally in the battery chamber; The module assembly includes a plurality of battery modules stacked in a height direction, so that the battery modules are arranged in rows and columns in the battery chamber; Each of the battery modules has a first combination mode and a second combination mode; in the first combination mode, the battery modules in any row are connected in series to form a first battery cluster; in the second combination mode, a predetermined number of the battery modules in any module assembly are connected in series to form a second battery cluster; The high-voltage chamber is provided with a plurality of high-voltage boxes corresponding to each of the battery clusters, and two combiner cabinets. Each of the combiner cabinets is provided with an energy storage converter for connecting to each of the battery clusters.

2. The energy storage cabin according to claim 1, characterized in that: The cabin is also separated into an equipment room, in which fire-fighting equipment is installed; the battery room is provided with a nozzle connected to the fire-fighting equipment, and the fire-fighting equipment can spray fire extinguishing agent on each of the module assemblies through the nozzle.

3. The energy storage cabin according to claim 2, characterized in that: The battery chamber is divided into a plurality of compartments by a plurality of bulkheads, each compartment is provided with at least one module assembly, and the top of each compartment is provided with the nozzle.

4. The energy storage cabin according to claim 3, characterized in that: The battery module includes a plurality of battery cells and a battery cell tray for supporting each of the battery cells; The battery cell tray includes a bottom plate, a pair of frames provided on opposite sides of the bottom plate, and a pair of end plates provided on the other two sides of the bottom plate; The battery cells are stacked in parallel along the length direction of the bottom plate, and a partition is sandwiched between two adjacent battery cells; The equipment room is further provided with a cooling device for cooling each of the battery modules, and a cooling flow channel communicating with the cooling device is formed in the bottom plate.

5. The energy storage cabin according to claim 4, characterized in that: The partition is made of heat insulating material.

6. The energy storage cabin according to claim 4, characterized in that: Between two adjacent battery modules, the bottom plate of the upper battery module can abut against the top of each battery cell of the lower battery module.

7. The energy storage cabin according to claim 4, characterized in that: The frame includes two horizontal beams that are spaced apart and arranged in parallel along the height direction of the battery cell tray, and a plurality of longitudinal beams that are spaced apart and arranged between the two horizontal beams.

8. The energy storage cabin according to claim 4, characterized in that: The bottom plate is provided with a liquid inlet and a liquid outlet which are connected to the cooling channel and used for connecting to the cooling device, and the liquid inlet and the liquid outlet are both located at the same end of the bottom plate.

9. The energy storage cabin according to claim 8, characterized in that: The module assembly further includes a liquid inlet manifold and a liquid outlet manifold communicated with the cooling device; The upper branch of the liquid inlet main pipe is formed with a plurality of liquid inlet branches connected to the respective liquid inlets; The liquid outlet main pipe is branched to form a plurality of liquid outlet branch pipes connected to the liquid outlet ports.

10. The energy storage cabin according to claim 4, characterized in that: The module assembly further includes a module tray and side panels disposed on both sides of the module tray; The module tray can support each of the battery modules, and the two side plates can constrain each of the battery modules in a lateral direction.

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