Energy storage cabinet and energy storage system

Abstract

The utility model relates to the technical field of battery energy storage, and discloses an energy storage cabinet and an energy storage system.The energy storage cabinet comprises a cabinet body, a containing space is arranged in the cabinet body and suitable for containing a battery cell module, a battery cell tray is arranged at the bottom of the battery cell module, and a cavity communicated with an exhaust channel of each battery cell of the battery cell module is formed in the battery cell tray; the top of the cabinet body is provided with an anti-explosion valve, the bottom of the cabinet body is provided with a liquid storage cavity, and the cabinet body is further provided with a connecting channel communicated with the cavity, the anti-explosion valve and the liquid storage cavity. According to the utility model, each battery cell in the battery cell module discharges gas to the explosion-proof valve on the cabinet body through the cavity of the battery cell tray and the connecting channel, and electrolyte of each battery cell flows into the liquid storage cavity for storage under the action of self gravity, so that a shell sealing structure of the battery cell is omitted, and the battery cell module is convenient to use. And the space utilization rate of the energy storage cabinet is remarkably improved, so that the energy storage cabinet has relatively high electricity loading capacity.

Description

Technical Field

[0001] This utility model relates to the field of battery energy storage technology, specifically to energy storage cabinets and energy storage systems. Background Technology

[0002] Current battery energy storage systems mostly adopt integrated energy storage cabinets, which mainly include components such as battery clusters, high-voltage distribution boxes, fire extinguishing modules, cooling modules, and energy storage inverters (PCS). An energy storage system consists of multiple energy storage cabinets. When the size of the energy storage cabinet is fixed, the larger the installed capacity of a single energy storage cabinet, the lower the cost of the energy storage system and the stronger its competitiveness.

[0003] To ensure energy storage safety, the gases generated by the battery cells need to be released promptly. Therefore, battery cells stored in energy storage cabinets typically adopt an upper and lower shell structure with a sealed design, such as a sealing edge of more than 20mm around the lower shell of the battery cell. However, the upper and lower shell structure of the battery cells occupies a large amount of space in the energy storage cabinet, resulting in low space utilization, a smaller total installed capacity of the energy storage system, and higher operating costs. Utility Model Content

[0004] In view of this, the present invention provides an energy storage cabinet and an energy storage system to solve the problem that the housing structure of the battery cells in the energy storage cabinet occupies a large space, resulting in low space utilization of the energy storage cabinet.

[0005] In a first aspect, this utility model provides an energy storage cabinet, comprising:

[0006] The cabinet has an internal storage space suitable for placing battery cell modules. The bottom of the battery cell module is provided with a battery cell tray, and the battery cell tray has a cavity that communicates with the exhaust channels of each battery cell in the battery cell module.

[0007] The cabinet is equipped with an explosion-proof valve at the top and a liquid storage chamber at the bottom. The cabinet is also equipped with connecting channels that communicate with the cavity, the explosion-proof valve and the liquid storage chamber respectively.

[0008] Beneficial effects: The cabinet of this utility model accommodates at least one battery cell module. The exhaust channels of each battery cell in the module exhaust gas to the explosion-proof valve on the cabinet through the cavity of the battery cell tray and the connecting channel. The electrolyte of each battery cell flows into the storage chamber under its own gravity, thus forming a thermoelectric separation structure. The exhaust process of the battery cell does not need to pass through the internal placement space of the cabinet, thereby eliminating the need for the battery cell shell sealing structure, significantly improving the space utilization rate of the energy storage cabinet, enabling the energy storage cabinet to have a higher capacity, and also reducing the risk of thermal runaway of the cabinet, thus improving the safety of the energy storage cabinet.

[0009] In one optional embodiment, the cabinet is provided with a plurality of brackets spaced apart along the height direction, the plurality of brackets dividing the placement space into a plurality of sub-placement spaces, and the plurality of sub-placement spaces corresponding to the placement of a plurality of battery cell modules.

[0010] Beneficial effects: The bracket is used to place and fix the cell tray. The design position of the bracket is selected according to the size of the cell module and the cell tray, so as to effectively organize and optimize the layout of the cell module, so that the cell module is arranged compactly and orderly, further improving the space utilization of the energy storage cabinet. It also facilitates the installation of multiple cell modules and increases the installed capacity of the energy storage cabinet.

[0011] In one optional embodiment, the cabinet includes: a plurality of vertical beams spaced apart, and a plurality of horizontal beams are respectively connected to the top and bottom of the plurality of vertical beams;

[0012] Each of the horizontal beams and each of the vertical beams is a hollow structure and is connected at the joint to form the connection channel. At least one of the vertical beams is connected to the cavity of the cell tray through a connecting pipe.

[0013] Beneficial effects: Multiple horizontal and vertical beams form the cabinet's frame, enhancing its structural strength. The hollow structure of the beams and vertical beams, with interconnected joints, allows them to serve as connecting channels. At least one vertical beam connects to the cavity of the battery cell tray via a connecting pipe, forming a sealed channel. This allows gases and electrolytes from the battery cells to be discharged through the beams without the need for additional piping, further improving the cabinet's space utilization. Furthermore, the low operating cost facilitates widespread adoption.

[0014] In one alternative embodiment, the explosion-proof valve is located on the top crossbeam;

[0015] And / or, the liquid storage chamber is located within the crossbeam at the bottom.

[0016] Beneficial effects: The explosion-proof valve is set on the top crossbeam, which facilitates the gas to rise to the top crossbeam after passing through the vertical beam, and then be discharged through the explosion-proof valve; the liquid storage chamber is set on the bottom crossbeam, which facilitates the electrolyte to first enter the cavity of the cell tray under its own gravity, then enter the vertical beam through the adapter pipe, and finally flow into the bottom crossbeam for storage.

[0017] In one alternative embodiment, the cabinet also includes a door, the cabinet having an opening, and the door being located on the side of the cabinet having the opening.

[0018] Beneficial effects: The door facilitates the installation and removal of battery cell modules, as well as the maintenance of the internal components of the energy storage cabinet.

[0019] In one optional embodiment, a cooling module is provided on the top of the cabinet, and a cooling plate is provided inside the battery cell module and attached to each battery cell. The cooling plate is connected to the cooling module through a cooling pipe.

[0020] Beneficial effects: The cooling module is located at the top of the cabinet, which reduces the space it occupies inside the cabinet, allowing for a more compact installation of the battery cell modules. The cooling module delivers cooling medium to the cooling plate through cooling pipes. The cooling plate effectively guides the heat generated by each battery cell to the outside of the cabinet, thereby maintaining the temperature of each battery cell within a safe range and preventing performance degradation or safety hazards due to overheating.

[0021] In one optional embodiment, the cell module contains a plurality of cells arranged in a row, and the top and sides of the cell module are also provided with side plates, which, together with the cell tray, surround each of the cells.

[0022] Beneficial effects: Multiple battery cells are arranged in rows within the battery cell module, resulting in a compact structure that improves space utilization. The side panels and battery cell trays enclose the outer sides of each battery cell, forming a sealed enclosure structure that effectively provides waterproofing.

[0023] In one optional embodiment, the top of the cabinet is also provided with a dehumidification module;

[0024] And / or, the bottom of the cabinet is provided with a high-voltage box and a fire extinguishing module, as well as an energy storage inverter located on one side of the high-voltage box and the fire extinguishing module.

[0025] Beneficial effects: The dehumidification module dehumidifies the interior of the energy storage cabinet, reducing condensation and preventing problems such as poor insulation and voltage withstand in the battery cells. Placing the high-voltage box and fire suppression module at the bottom of the cabinet, and installing the energy storage inverter on one side of them, reduces interference between the high-voltage box, fire suppression module, and energy storage inverter. Positioning the fire suppression module at the bottom of the cabinet, close to the high-voltage box and energy storage inverter, improves the response speed in the event of a fire, ensuring rapid activation of the fire suppression module and thus reducing fire risk and damage.

[0026] Secondly, this utility model also provides an energy storage system, including: a plurality of the above-mentioned energy storage cabinets, wherein the plurality of energy storage cabinets are arranged in sequence.

[0027] Beneficial effects: Because the energy storage system includes an energy storage cabinet, it has the same effect as the cabinet itself. Specifically, the venting channels of each cell within the battery module, through the cavity of the cell tray and connecting channels, vent gas to the explosion-proof valve on the cabinet. The electrolyte of each cell flows into the storage chamber under its own gravity, forming a thermoelectric separation structure. The venting process of the cells does not require passing through the internal storage space of the cabinet, thus eliminating the need for a sealed casing structure for the cells. This significantly improves the space utilization of the energy storage cabinet, enabling it to have a higher capacity. Furthermore, it reduces the risk of thermal runaway and enhances the safety of the energy storage cabinet. In addition, arranging multiple energy storage cabinets sequentially improves the overall space utilization of the energy storage system.

[0028] In one alternative implementation, the system further includes an energy storage tray on which a plurality of the energy storage cabinets are arranged in a row.

[0029] Beneficial effect: Placing multiple energy storage cabinets in a row on an energy storage pallet facilitates the transportation of multiple energy storage cabinets via the energy storage pallet. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of an energy storage cabinet according to an embodiment of the present utility model;

[0032] Figure 2 for Figure 1 The main view;

[0033] Figure 3 This is a partial structural schematic diagram of an energy storage cabinet according to an embodiment of the present utility model;

[0034] Figure 4 This is a front view of an energy storage cabinet after installing a battery cell module, according to an embodiment of the present utility model.

[0035] Figure 5 This is a partial structural diagram of an energy storage cabinet according to an embodiment of the present utility model;

[0036] Figure 6 This is a side view of an energy storage cabinet after the battery cell module has been installed, according to an embodiment of the present invention.

[0037] Figure 7 This is a front view of an energy storage system according to an embodiment of the present utility model;

[0038] Figure 8 This is a top view of an energy storage system according to an embodiment of the present utility model;

[0039] Figure 9 This is a side view of an energy storage system according to an embodiment of the present utility model;

[0040] Figure 10 This is a schematic diagram of the structure of a battery cell module inside an energy storage cabinet according to an embodiment of the present utility model;

[0041] Figure 11 for Figure 10 A partial structural diagram;

[0042] Figure 12 This is a schematic diagram of the structure of the battery cell module and battery cell tray according to an embodiment of the present utility model;

[0043] Figure 13 This is a structural schematic diagram of the battery cell module and battery cell tray from another perspective of an embodiment of this utility model;

[0044] Figure 14 This is a schematic diagram of the battery cell structure of the battery cell module according to an embodiment of the present utility model;

[0045] Figure 15 This is a structural schematic diagram of the battery cell module of this utility model from another perspective.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1. Cabinet; 101. Bracket; 102. Vertical beam; 103. Horizontal beam; 104. Adaptor pipe; 105. Door; 106. Outer shell; 107. Liquid storage chamber; 2. Battery cell module; 201. Battery cell; 3. Battery cell tray; 301. Cavity; 4. Explosion-proof valve; 5. Cooling module; 6. Cooling plate; 7. Cooling pipes; 8. Side panel; 9. High-voltage box; 10. Fire extinguishing module; 11. Energy storage inverter;

[0048] 100. Energy storage cabinet; 200. Energy storage pallet. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0050] The following is combined Figures 1 to 15The following describes embodiments of the present invention.

[0051] According to embodiments of the present invention, on the one hand, such as Figure 1 As shown, an energy storage cabinet is provided, including: a cabinet body 1. The cabinet body 1 has a placement space inside, suitable for placing a battery cell module 2. The bottom of the battery cell module 2 is provided with a battery cell tray 3, and the battery cell tray 3 has a cavity 301 that communicates with the exhaust channels of each battery cell 201 of the battery cell module 2.

[0052] The cabinet 1 is equipped with an explosion-proof valve 4 at the top and a liquid storage chamber 107 at the bottom. The cabinet 1 is also equipped with a connection channel that connects to the cavity 301, the explosion-proof valve 4 and the liquid storage chamber 107 respectively.

[0053] The energy storage cabinet provided in this embodiment of the utility model has a cabinet body 1 that accommodates at least one battery cell module 2. The exhaust channels of each battery cell 201 in the battery cell module 2 are connected to the cavity 301 of the battery cell tray 3 and the connecting channel, and the gas is discharged to the explosion-proof valve 4 on the cabinet body 1. The electrolyte of each battery cell 201 flows into the liquid storage chamber 107 under its own gravity and is stored, which forms a thermoelectric separation structure. The exhaust process of the battery cell 201 does not need to pass through the placement space inside the cabinet body 1, thereby omitting the shell sealing structure of the battery cell 201 itself, which significantly improves the space utilization of the energy storage cabinet, enables the energy storage cabinet to have a high capacity, and also reduces the risk of thermal runaway of the cabinet body 1, thus improving the safety of the energy storage cabinet.

[0054] Specifically, the cavity 301 of the battery cell tray 3 is connected to the explosion-proof valve 4 through a connecting channel, and the cavity 301 of the battery cell tray 3 is also connected to the liquid storage chamber 107 through a connecting channel. The connecting channel can be a pipeline structure, or an extension structure of the cavity 301 of the battery cell tray 3 and the liquid storage chamber 107.

[0055] It should be noted that this embodiment of the utility model does not limit the connection method between the cell tray 3 and the cell module 2, and any existing connection structure can be used as needed. For example, the cell tray 3 can be glued to the bottom of the cell module 2 with adhesive, or the cell tray 3 can be fixed to the bottom of the cell module 2 with fasteners, such as screws or bolts.

[0056] In one embodiment, multiple brackets 101 are spaced apart along the height direction inside the cabinet 1, dividing the placement space into multiple sub-placement spaces, each corresponding to a multiple battery cell module 2. The brackets 101 are used to place and fix the battery cell trays 3. The design position of the brackets 101 is selected according to the size of the battery cell module 2 and the battery cell tray 3, so as to effectively organize and optimize the layout of the battery cell module 2, making the battery cell module 2 compact and orderly arranged, further improving the space utilization of the energy storage cabinet, and also facilitating the installation of multiple battery cell modules 2, thereby increasing the installed capacity of the energy storage cabinet.

[0057] Specifically, the height direction of cabinet 1 is as follows: Figure 3 As indicated by arrow H, which points up and down, the length of cabinet 1 is as follows: Figure 3 As shown by arrow L in the diagram, the width direction of cabinet 1 is as follows: Figure 3 As indicated by the arrow W in the diagram.

[0058] It should be noted that this embodiment of the invention does not limit the number of battery cell modules 2 installed inside the cabinet 1. One, two, or more battery cell modules 2 can be installed as needed. When multiple battery cell modules 2 are installed, they are arranged vertically to allow for concentrated upward flow of gas and concentrated downward flow of electrolyte. For example, as... Figure 4 and Figure 6 As shown, three battery cell modules 2 are provided. The clearance between the front and rear of each battery cell module 2 and the cabinet 1 only needs to meet the assembly tolerance requirements, resulting in minimal space waste.

[0059] In one embodiment, such as Figure 3 and Figure 4 As shown, the cabinet 1 includes a plurality of vertical beams 102 spaced apart, and a plurality of horizontal beams 103 are respectively connected to the top and bottom of the plurality of vertical beams 102. The plurality of horizontal beams 103 and the plurality of vertical beams 102 together form the frame of the cabinet 1 to improve the structural strength of the cabinet 1.

[0060] Furthermore, each horizontal beam 103 and each vertical beam 102 is a hollow structure and is interconnected at the connection points to form a connecting channel. At least one vertical beam 102 is connected to the cavity 301 of the cell tray 3 via a connecting pipe 104. For example, each vertical beam 102 is connected to the cavity 301 of the cell tray 3 via a connecting pipe 104. Alternatively, the cavities 301 of multiple cell trays 3 are connected to a vertical beam 102 via multiple connecting pipes 104. The hollow internal structures of the multiple horizontal beams 103 and multiple vertical beams 102 form a sealed connecting channel, thereby allowing the gas and electrolyte discharged from the cell 201 to be discharged through the multiple horizontal beams 103 and multiple vertical beams 102 without the need for additional pipelines, further improving the space utilization of the cabinet 1, and with lower operating costs, making it easier to promote.

[0061] Specifically, the crossbeam 103 and the vertical beam 102 can be hollow square tube structures, which are connected to each other by welding and form a cuboid frame. A connection joint is provided at the connection between the vertical beam 102 and the transfer pipe 104 for installation. Similarly, a flow guide joint is provided on the cell tray 3 to communicate with the cavity 301 and to connect with the transfer pipe 104 through the flow guide joint.

[0062] Furthermore, the bracket 101 can adopt an L-shaped cross-section support beam, which has a horizontal plate and a vertical plate connected to each other. The vertical plate is welded and fixed to the inner side of the vertical beam 102, and the horizontal plate is used to place the battery cell tray 3. The battery cell tray 3 is used to slide the battery cell module 2 onto the bracket 101 by a forklift or lifting fixture.

[0063] In addition, a limiting plate can be provided at the rear end of the bracket 101 for limiting the position of the battery cell tray 3. Of course, a fixing member for fixing the battery cell tray 3 can also be provided on the bracket 101. The form of the fixing member can be any existing structure according to actual needs. In this regard, this embodiment of the utility model does not impose too many restrictions.

[0064] In one embodiment, such as Figure 3 and Figure 4 As shown, the explosion-proof valve 4 is installed on the top crossbeam 103. Installing the explosion-proof valve 4 on the top crossbeam 103 facilitates the gas to rise to the top crossbeam 103 after passing through the vertical beam 102, and then be discharged through the explosion-proof valve 4.

[0065] And / or, the liquid storage chamber 107 is located within the crossbeam 103 at the bottom. Specifically, as Figure 5 As shown, the bottom crossbeam 103 is a hollow square tube structure, and the cavity inside the hollow square tube serves as the liquid storage chamber 107. The liquid storage chamber 107 is set inside the bottom crossbeam 103 so that the electrolyte can first enter the cavity 301 of the cell tray 3 under its own gravity, then enter the vertical beam 102 through the transfer pipe 104, and finally flow into the bottom crossbeam 103 for storage.

[0066] In one embodiment, such as Figure 1 and Figure 2 As shown, the energy storage cabinet also includes a door 105. The cabinet 1 has an opening, and the door 105 is located on the side of the cabinet 1 with the opening. The door 105 facilitates the installation and removal of the battery cell modules 2, as well as the maintenance of the internal components of the energy storage cabinet. For example, as... Figure 1 As shown, the door 105 can be a double door structure for use.

[0067] In addition, the cabinet 1 is equipped with an outer shell 106 that covers the frame, which is used to protect the battery cell module 2 inside the energy storage cabinet from the influence of the external environment, thereby extending the service life of the energy storage cabinet.

[0068] In one embodiment, such as Figure 1 , Figure 2 and Figure 10As shown, a cooling module 5 is provided on the top of the cabinet 1, and a cooling plate 6 is attached to each battery cell 201 inside the battery cell module 2. The cooling plate 6 is connected to the cooling module 5 through a cooling pipe 7. The cooling module 5 is located on the top of the cabinet 1, which reduces the space it occupies inside the cabinet 1, allowing for a more compact installation of the battery cell module 2 within the cabinet 1. The cooling module 5 delivers a cooling medium to the cooling plate 6 through the cooling pipe 7. The cooling plate 6 can effectively guide the heat generated by each battery cell 201 to the outside of the cabinet 1, thereby maintaining the temperature of each battery cell 201 within a safe range and preventing performance degradation or safety hazards due to overheating.

[0069] Specifically, the cooling module 5 uses direct refrigerant cooling or liquid cooling to achieve energy saving and reduce operating costs. The battery cell module 2 generally contains multiple rows of battery cells 201, with cooling plates 6 placed between the rows of battery cells 201 to effectively control the temperature of each battery cell 201.

[0070] Furthermore, in one embodiment, such as Figure 11 , Figure 12 and Figure 13 As shown, the battery cell module 2 contains multiple battery cells 201 arranged in a row. Side panels 8 are also provided on the top and sides of the battery cell module 2, and the side panels 8 and the battery cell tray 3 surround each battery cell 201. The multiple battery cells 201 arranged in a row within the battery cell module 2 have a compact structure, which helps to improve the space utilization of the battery cell module 2. The side panels 8 and the battery cell tray 3, enclosing the outside of each battery cell 201, form a sealed enclosure structure for the battery cell module 2, which can effectively provide waterproofing.

[0071] Specifically, the side plate 8 and the cell tray 3 need to be sealed and fixed to each cell module 2. For example, the top and sides of the cell module 2 are fixedly bonded to the side plate 8 with adhesive. After the integrated busbar of the cell module 2 is welded, the electrical connection area is sealed and waterproofed by potting foam.

[0072] Furthermore, in order to compactly arrange the battery cell 201 within the battery cell module 2, and to facilitate the drainage of gas and electrolyte from the battery cell 201 into the cavity 301 of the battery cell tray 3, such as Figure 14 and 15 As shown, the battery cells 201 in the battery cell module 2 are of the same specification and have terminals on the same side.

[0073] For example, the battery cell 201 has dimensions of 595mm × 320mm × 30mm, and its capacity is 435 × 595 × 320 × 30 / 3.2 = 776.5Ah. The battery cell module 2 adopts a layout of 4 columns and 34 rows, and each battery cell 201 has an exhaust channel on the same side.

[0074] Furthermore, in one embodiment, a dehumidification module is also provided on the top of the cabinet 1. The dehumidification module is used to dehumidify the inside of the energy storage cabinet, reduce condensation, and prevent problems such as poor insulation and poor withstand voltage of the battery cell module 2.

[0075] And / or, such as Figure 3 and Figure 4 As shown, the bottom of the cabinet 1 is equipped with a high-voltage box 9 and a fire extinguishing module 10, as well as an energy storage inverter 11 located on one side of the high-voltage box 9 and the fire extinguishing module 10. Placing the high-voltage box 9 and the fire extinguishing module 10 at the bottom of the cabinet 1, and placing the energy storage inverter 11 on one side of the high-voltage box 9 and the fire extinguishing module 10, can reduce interference between the high-voltage box 9, the fire extinguishing module 10, and the energy storage inverter 11. Placing the fire extinguishing module 10 at the bottom of the cabinet 1, close to the high-voltage box 9 and the energy storage inverter 11, can improve the response speed in the event of a fire within the cabinet 1, ensuring that the fire extinguishing module 10 can be activated quickly, thereby reducing the fire risk and the resulting damage.

[0076] Specifically, a high-voltage box 9, a fire extinguishing module 10, and an energy storage inverter 11 are installed in the gap between the lowest bracket 101 and the bottom of the cabinet 1. For example, the high-voltage box 9 and the fire extinguishing module 10 are arranged along the width of the cabinet 1.

[0077] It should be noted that this embodiment of the utility model does not impose any restrictions on the structure of the high-voltage box 9, the fire extinguishing module 10, and the energy storage inverter 11, and any existing structure can be selected as needed.

[0078] According to an embodiment of the present invention, on the other hand, as... Figures 7 to 9 As shown, an energy storage system is also provided, including: multiple energy storage cabinets 100.

[0079] Because the energy storage system includes an energy storage cabinet 100, it has the same effect as the energy storage cabinet 100. That is, the venting channels of each battery cell 201 in the battery cell module 2 are connected through the cavity 301 of the battery cell tray 3 and the connecting channel, and the gas is discharged to the explosion-proof valve 4 on the cabinet 1. The electrolyte of each battery cell 201 flows into the liquid storage chamber 107 for storage under its own gravity, which forms a thermoelectric separation structure. The venting process of the battery cell 201 does not need to pass through the placement space inside the cabinet 1, thus eliminating the need for the housing sealing structure of the battery cell 201 itself, significantly improving the space utilization of the energy storage cabinet 100, enabling the energy storage cabinet 100 to have a higher capacity, and also reducing the risk of thermal runaway of the cabinet 1, thus improving the safety of the energy storage cabinet 100. In addition, the sequential arrangement of multiple energy storage cabinets 100 can improve the overall space utilization of the energy storage system.

[0080] It should be noted that this embodiment of the invention does not limit the number of energy storage cabinets 100 installed in the energy storage system; two, three, or more can be installed as needed. Furthermore, there is no restriction on the arrangement of the multiple energy storage cabinets 100; the arrangement can be chosen as needed, for example, multiple energy storage cabinets 100 can be arranged in a row.

[0081] In one embodiment, such as Figures 7 to 9 As shown, the energy storage system also includes an energy storage tray 200, on which multiple energy storage cabinets 100 are arranged in a row, facilitating the simultaneous transport of multiple energy storage cabinets 100 via the energy storage tray 200.

[0082] For example, such as Figures 7 to 9 As shown, the energy storage system adopts a back-to-back double-row four-panel layout, meaning the system comprises eight energy storage cabinets 100, with a total height of less than 2896mm. The capacity of a single energy storage cabinet 100 is 3 × 136 × 3.2 × 776.5 = 1013 kWh. The energy storage tray 200 is a standard 20-foot unit with a length of 6058mm, a width of 2438mm, and a height of 300mm. The energy storage capacity of this tray is 1013 kWh × 8 = 8.1 MWh. Traditional energy storage systems have a maximum capacity of approximately 6.9 MWh on a standard 20-foot energy storage tray 200. The energy storage system provided by this embodiment improves upon this by approximately 17.4%, significantly reducing the operating cost of the energy storage system.

[0083] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An energy storage cabinet, characterized in that, include: The cabinet has an internal storage space suitable for placing battery cell modules. The bottom of the battery cell module is provided with a battery cell tray, and the battery cell tray has a cavity that communicates with the exhaust channels of each battery cell in the battery cell module. The cabinet is equipped with an explosion-proof valve at the top and a liquid storage chamber at the bottom. The cabinet is also equipped with connecting channels that communicate with the cavity, the explosion-proof valve and the liquid storage chamber respectively.

2. The energy storage cabinet according to claim 1, characterized in that, The cabinet is provided with multiple brackets spaced apart along the height direction. The multiple brackets divide the placement space into multiple sub-placement spaces, and the multiple sub-placement spaces are respectively used to place multiple battery cell modules.

3. The energy storage cabinet according to claim 1, characterized in that, The cabinet includes: a plurality of vertical beams spaced apart, and a plurality of horizontal beams connected to the top and bottom of the plurality of vertical beams respectively; Each of the horizontal beams and each of the vertical beams is a hollow structure and is connected at the joint to form the connection channel. At least one of the vertical beams is connected to the cavity of the cell tray through a connecting pipe.

4. The energy storage cabinet according to claim 3, characterized in that, The explosion-proof valve is located on the crossbeam at the top; And / or, the liquid storage chamber is located within the crossbeam at the bottom.

5. The energy storage cabinet according to any one of claims 1 to 4, characterized in that, It also includes a door, the cabinet having an opening, and the door being located on the side of the cabinet with the opening.

6. The energy storage cabinet according to any one of claims 1 to 4, characterized in that, The top of the cabinet is equipped with a cooling module, and the battery cell module is equipped with a cooling plate attached to each battery cell. The cooling plate is connected to the cooling module through a cooling pipe.

7. The energy storage cabinet according to claim 6, characterized in that, The battery cell module contains multiple battery cells arranged in a row. The top and sides of the battery cell module are also provided with side plates, which, together with the battery cell tray, surround each battery cell.

8. The energy storage cabinet according to claim 6, characterized in that, The top of the cabinet is also equipped with a dehumidification module; And / or, the bottom of the cabinet is provided with a high-voltage box and a fire extinguishing module, as well as an energy storage inverter located on one side of the high-voltage box and the fire extinguishing module.

9. An energy storage system, characterized in that, include: The energy storage cabinet according to any one of claims 1 to 8.

10. The energy storage system according to claim 9, characterized in that, It also includes an energy storage tray, on which multiple energy storage cabinets are arranged in rows.

Images