Energy storage cabinet

Abstract

The utility model belongs to the technical field of energy storage cabinets, and particularly relates to an energy storage cabinet. The energy storage cabinet comprises a cabinet body, an energy storage layer, a converter device and a temperature control device, the energy storage layer, the converter device and the temperature control device are installed in the cabinet body, the energy storage layer comprises a shell, a drawer and a battery cell, an energy storage bin is arranged in the shell, the energy storage bin is provided with a bin opening, the drawer is movably connected in the energy storage bin, the drawer can enter and exit from the energy storage bin through the bin opening, and the converter device and the temperature control device are installed in the energy storage bin. A mounting cavity is formed in the drawing compartment, the battery cell is mounted in the mounting cavity, and the battery cell is electrically connected with the converter device and the temperature control device. The battery pack is omitted, the battery cell is mounted in the mounting cavity of the drawer, the drawer can enter and exit from the energy storage bin of the energy storage layer from the bin opening, when the battery cell needs to be disassembled or assembled or the battery cell model needs to be replaced, only the drawer needs to be pulled out of the energy storage bin, and the battery cell is taken out of the drawer, so that the disassembly and assembly are convenient, and the model is convenient to change.

Description

Technical Field

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

[0002] An energy storage unit is a device used to store electrical energy. It uses energy storage components such as batteries and supercapacitors to store and release electrical energy. Energy storage units are characterized by high energy density, fast response, and long lifespan, making them a key component of modern energy systems.

[0003] An existing energy storage cabinet includes a cabinet, a battery pack, a converter, and a temperature control device. The cabinet contains an energy storage compartment where the battery pack is installed. The converter is connected to the cabinet, and the battery pack is electrically connected to the converter. During peak grid load periods, the converter can release the stored energy to meet the grid's load demand. During off-peak periods, it can store excess energy for unforeseen needs. The temperature control device is connected to the cabinet, and the battery pack is electrically connected to the temperature control device. Through precise temperature control, the temperature control device effectively prevents overheating of the battery cells within the battery pack, avoiding thermal runaway caused by high temperatures and thus reducing the risk of fire.

[0004] Existing energy storage cabinets require layout design based on the series and parallel connections and dimensions of the battery packs. The battery packs themselves are shaped according to the series and parallel connections of their internal cells. If the cell models need to be changed, both the battery pack and the cabinet must be redesigned, resulting in a lengthy process and potential for stagnant or scrapped materials. Furthermore, production equipment needs to be redeveloped or procured, significantly impacting the company's manpower, resources, and time. Therefore, the cost of changing energy storage cabinet designs is high. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide an energy storage cabinet that addresses the issue of high replacement costs for existing energy storage cabinets.

[0006] To solve the above-mentioned technical problems, this utility model provides an energy storage cabinet, including a cabinet body, and an energy storage layer, a converter device, and a temperature control device installed in the cabinet body. The energy storage layer includes a shell, a drawer, and battery cells. The shell body has an energy storage compartment with an opening. The drawer is movably connected to the energy storage compartment and can enter and exit the energy storage compartment through the opening. The drawer has an installation cavity, and the battery cells are installed in the installation cavity. The battery cells are electrically connected to the converter device and the temperature control device respectively.

[0007] Optionally, the compartment includes a connected tray and a sealing plate. The tray has the mounting cavity and is slidably connected to the wall of the energy storage compartment. The sealing plate is located at one end of the tray near the opening of the energy storage compartment and is used to seal the opening.

[0008] Optionally, the energy storage compartment further includes a sealing structure disposed between the sealing plate and the compartment opening, the sealing structure being used to seal the gap between the sealing plate and the compartment opening.

[0009] Optionally, the battery cells are provided in multiples, and the multiple battery cells are installed at intervals in the mounting cavity. The energy storage layer also includes an integrated module. All the battery cells are electrically connected to the integrated module, and the integrated module is electrically connected to the converter device and the temperature control device, respectively.

[0010] Optionally, the integrated module includes an integrated board and a data acquisition board connected together. The data acquisition board is electrically connected to the integrated board. The number of data acquisition boards is the same as the number of battery cells. Each data acquisition board corresponds to a battery cell. The data acquisition board is provided with a positive connection position and a negative connection position. The positive connection position is pressed onto the positive terminal of the battery cell, and the negative connection position is pressed onto the negative terminal of the battery cell. The integrated board is electrically connected to the inverter device and the temperature control device, respectively.

[0011] Optionally, the energy storage layer further includes a heat dissipation plate, which is disposed on the side of the support plate opposite to the battery cell, and is used for heat dissipation of the battery cell.

[0012] Optionally, the energy storage layer further includes a fire suppression module, which can spray aerogel into the energy storage chamber when thermal runaway occurs.

[0013] Optionally, the energy storage layer further includes a pressure relief device. The sealing plate is provided with a pressure relief hole, and the pressure relief device is installed in the pressure relief hole. The pressure relief device can discharge the gas in the energy storage chamber when thermal runaway occurs in the energy storage chamber.

[0014] Optionally, multiple energy storage layers are provided, and the multiple energy storage layers are stacked one on top of the other, with the integrated module of two adjacent energy storage layers being electrically connected.

[0015] Optionally, a fireproof and heat-insulating layer is provided between two adjacent energy storage layers, and the fireproof and heat-insulating layer is used for heat insulation between the two adjacent energy storage layers.

[0016] Compared with the prior art, the energy storage cabinet according to the present utility model eliminates the need for a battery pack. The battery cells are installed in the installation cavity of the drawer compartment. The drawer compartment can enter and exit the energy storage compartment of the energy storage layer from the compartment opening. When it is necessary to disassemble or replace the battery cells or change the battery cell model, it is only necessary to pull the drawer compartment out of the energy storage compartment and take out the battery cells from the drawer compartment. Disassembly and assembly are convenient and it is easy to change the model. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an energy storage cabinet provided in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of its breakdown.

[0019] The following are the reference numerals in the accompanying drawings: 1. Cabinet; 2. Energy storage layer; 3. Shell; 4. Battery cell; 5. Drawer compartment; 6. Sealing plate; 7. Tray; 8. Mounting cavity; 9. Energy storage compartment; 10. Compartment opening; 11. Converter device; 12. Temperature control device; 13. Fire protection module; 14. Pressure relief device; 15. Sealing ring; 16. Integrated module; 17. Integrated board; 18. Data acquisition board; 19. Positive connection position; 20. Negative connection position; 21. Heat sink; 22. Fireproof and heat insulation layer. Detailed Implementation

[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] like Figure 1 and Figure 2 As shown, an embodiment of this utility model provides an energy storage cabinet, including a cabinet body 1, and an energy storage layer 2, a converter device 11, and a temperature control device 12 installed in the cabinet body 1. The energy storage layer 2 includes a shell 3, a drawer 5, and a battery cell 4. The shell 3 has an energy storage compartment 9 with a compartment opening 10. The drawer 5 is movably connected to the energy storage compartment 9 and can enter and exit the energy storage compartment 9 through the compartment opening 10. The drawer 5 has an installation cavity 8, and the battery cell 4 is installed in the installation cavity 8. The battery cell 4 is electrically connected to the converter device 11 and the temperature control device 12 respectively.

[0022] Specifically, the battery cell 4 is installed in the mounting cavity 8 of the drawer 5. The drawer 5 can enter and exit the energy storage chamber 9 of the energy storage layer 2 through the opening 10. When it is necessary to disassemble or replace the battery cell 4 or change the battery cell 4 model, simply pull the drawer 5 out of the energy storage chamber 9 and take out the battery cell 4 from the drawer 5. Disassembly and assembly are convenient and it is easy to change the model.

[0023] When the grid load is at its peak, the converter device 11 can release the stored electrical energy to meet the grid load demand. When the grid load is at its low point, it can store the excess electrical energy for unforeseen needs. The temperature control device 12 is connected to the cabinet 1, and the battery cell 4 is electrically connected to the temperature control device 12. The temperature control device 12 can effectively prevent the battery cell 4 from overheating through precise temperature control, thereby avoiding battery thermal runaway caused by high temperature and reducing the risk of fire.

[0024] In one embodiment, the drawer 5 includes a connected tray 7 and a sealing plate 6. The tray 7 is provided with the mounting cavity 8. The tray 7 is slidably connected to the wall of the energy storage compartment 9. The sealing plate 6 is located at one end of the tray 7 near the opening 10 of the energy storage compartment 9. The sealing plate 6 is used to seal the opening 10.

[0025] Specifically, the drawer 5 includes a connected pallet 7 and a sealing plate 6. The bottom wall of the energy storage compartment 9 is provided with a slide rail, and some of the pallet 7 facing the bottom wall of the compartment are provided with a sliding groove. The slide rail and the sliding groove are slidably connected, so that the pallet 7 is slidably connected to the energy storage compartment 9. By pulling the sealing plate 6, the pallet 7 can enter and exit the energy storage compartment 9.

[0026] The sealing plate 6 is rectangular, and the opening 10 is rectangular. The length and width of the sealing plate 6 are slightly larger than the opening 10, so that the sealing plate 6 can completely seal the opening 10 and prevent external debris from entering the energy storage compartment 9. The side of the sealing plate 6 facing away from the support plate 7 is provided with a handle for staff to push and pull the compartment 5.

[0027] In one embodiment, the energy storage compartment 9 further includes a sealing structure disposed between the sealing plate 6 and the compartment opening 10, the sealing structure being used to seal the gap between the sealing plate 6 and the compartment opening 10.

[0028] Specifically, the sealing structure is a sealing ring 15 installed at the opening 10. The sealing ring 15 is connected to the side of the opening 10 facing the sealing plate 6, so that when the tray 7 is pushed into the compartment, the sealing plate 6 contacts the sealing ring 15. Compared with the harder opening 10, the sealing plate 6 contacts the softer sealing ring 15, which can reduce the gap between the sealing plate 6 and the opening 10.

[0029] In one embodiment, multiple battery cells 4 are provided, and the multiple battery cells 4 are installed at intervals in the mounting cavity 8. The energy storage layer 2 also includes an integrated module 16. All battery cells 4 are electrically connected to the integrated module 16. The integrated module 16 is electrically connected to the converter device 11 and the temperature control device 12, respectively.

[0030] The integrated module 16 includes an integrated board 17 and a data acquisition board 18 connected together. The data acquisition board 18 is electrically connected to the integrated board 17. The number of data acquisition boards 18 is the same as the number of battery cells 4. Each data acquisition board 18 corresponds to a battery cell 4. Each data acquisition board 18 is provided with a positive terminal connection 19 and a negative terminal connection 20. The positive terminal connection 19 is pressed onto the positive terminal of the battery cell 4, and the negative terminal connection 20 is pressed onto the negative terminal of the battery cell 4. The integrated board 17 is electrically connected to the inverter device 11 and the temperature control device 12, respectively.

[0031] Specifically, the integrated board 17 is a one-piece plate structure. The integrated board 17 is connected to the top wall of the housing 3. The acquisition board 18 is installed on the side of the integrated board 17 facing the battery cell 4. The acquisition board 18 is provided with a positive terminal connection position 19 and a negative terminal connection position 20. When the battery cell 4 is pushed into the energy storage compartment 9, the positive terminal connection position 19 is pressed onto the positive terminal of the battery cell 4, and the negative terminal connection position 20 is pressed onto the negative terminal of the battery cell 4, thereby integrating and conductively connecting each battery cell 4 onto the integrated module 16, which facilitates the management of the battery cell 4.

[0032] In one embodiment, the energy storage layer 2 further includes a heat dissipation plate 21, which is disposed on the side of the support plate 7 facing away from the battery cell 4, and is used for heat dissipation of the battery cell 4.

[0033] Specifically, the heat sink 21 is plate-shaped and has heat dissipation pipes. Condensate is contained in the heat dissipation pipes. The heat sink 21 is installed at the bottom of the housing 3. When the battery cell 4 is working, the heat generated is transferred to the housing 3 via the support plate 7, and then transferred to the heat sink 21 via the housing 3. The heat sink 21 dissipates the heat quickly to prevent the battery cell 4 from overheating.

[0034] In one embodiment, the energy storage layer 2 further includes a fire suppression module 13, which can spray aerogel into the energy storage chamber 9 when thermal runaway occurs. The fire suppression module 13 is installed on the sealing plate 6. When thermal runaway occurs in the energy storage chamber 9, the fire suppression module 13 can spray aerogel into the energy storage chamber 9 to achieve rapid cooling and fire suppression.

[0035] In one embodiment, the energy storage layer 2 further includes a pressure relief device 14. The sealing plate 6 is provided with a pressure relief hole, and the pressure relief device 14 is installed in the pressure relief hole. The pressure relief device 14 can discharge the gas in the energy storage chamber 9 when thermal runaway occurs in the energy storage chamber 9.

[0036] Specifically, the sealing plate 6 is provided with a pressure relief hole, and the pressure relief device 14 is installed in the pressure relief hole. When thermal runaway occurs in the energy storage chamber 9, the gas in the chamber will expand rapidly due to heat. The pressure relief device 14 can quickly discharge the gas in the chamber to avoid explosion.

[0037] In one embodiment, the energy storage layer 2 is provided in multiple layers, and the multiple energy storage layers 2 are stacked one on top of the other, with the integrated module 16 of two adjacent energy storage layers 2 electrically connected.

[0038] Specifically, multiple energy storage layers 2 are stacked one on top of the other, and the acquisition boards 18 on the energy storage modules of two adjacent energy storage layers 2 are electrically connected, thereby connecting each energy storage layer 2 in series and increasing the energy storage capacity of the energy storage cabinet.

[0039] In one embodiment, a fireproof and heat-insulating layer 22 is provided between two adjacent energy storage layers 2, and the fireproof and heat-insulating layer 22 is used for heat insulation between the two adjacent energy storage layers 2.

[0040] A fireproof and heat-insulating layer 22 is provided between two adjacent energy storage layers 2. The fireproof and heat-insulating layer 22 is located at the bottom of the shell 3. The heat dissipation plate 21 is located between the fireproof and heat-insulating layer 22 and the shell 3. The fireproof and heat-insulating layer 22 is used to reduce the heat transfer between two adjacent energy storage layers 2 and to prevent thermal runaway of one energy storage compartment 9 from affecting all energy storage compartments 9.

[0041] The working principle of the energy storage cabinet in this embodiment of the utility model is as follows:

[0042] Battery cell 4 is installed in the mounting cavity 8 of the drawer 5. The drawer 5 can enter and exit the energy storage chamber 9 of the energy storage layer 2 through the opening 10. When it is necessary to disassemble or replace the battery cell 4 or change the battery cell 4 model, simply pull the drawer 5 out of the energy storage chamber 9 and take out the battery cell 4 from the drawer 5. When thermal runaway occurs in the energy storage chamber 9, the gas in the chamber will expand rapidly due to heat. The pressure relief device 14 can quickly discharge the gas in the chamber to avoid explosion. At the same time, the protection module sprays aerogel into the energy storage chamber 9 to achieve rapid cooling and fire extinguishing of the energy storage chamber 9.

[0043] According to the embodiment of the present utility model, the energy storage cabinet eliminates the need for a battery pack compared with the prior art. The battery cell 4 is installed in the mounting cavity 8 of the drawer 5. The drawer 5 can enter and exit the energy storage chamber 9 of the energy storage layer 2 from the opening 10. When it is necessary to disassemble or replace the battery cell 4 or change the battery cell 4 model, it is only necessary to pull the drawer 5 out of the energy storage chamber 9 and take out the battery cell 4 from the drawer 5. Disassembly and assembly are convenient and it is easy to change the model.

[0044] In other embodiments, the heat dissipation pipes of the heat sink 21 are ventilation pipes, which dissipate heat through the flowing gas.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An energy storage cabinet, characterized in that, The device includes a cabinet (1), an energy storage layer (2), a converter device (11), and a temperature control device (12) installed in the cabinet (1). The energy storage layer (2) includes a shell (3), a drawer (5), and a battery cell (4). The shell (3) has an energy storage compartment (9) with a compartment opening (10). The drawer (5) is movably connected to the energy storage compartment (9) and can enter and exit the energy storage compartment (9) through the compartment opening (10). The drawer (5) has an installation cavity (8) and the battery cell (4) is installed in the installation cavity (8). The battery cell (4) is electrically connected to the converter device (11) and the temperature control device (12) respectively.

2. The energy storage cabinet according to claim 1, characterized in that, The compartment (5) includes a connected tray (7) and a sealing plate (6). The tray (7) is provided with the mounting cavity (8). The tray (7) is slidably connected to the wall of the energy storage compartment (9). The sealing plate (6) is located at one end of the tray (7) near the opening (10) of the energy storage compartment (9). The sealing plate (6) is used to seal the opening (10).

3. The energy storage cabinet according to claim 2, characterized in that, The energy storage compartment (9) also includes a sealing structure, which is disposed between the sealing plate (6) and the compartment opening (10) and is used to seal the gap between the sealing plate (6) and the compartment opening (10).

4. The energy storage cabinet according to claim 2, characterized in that, The battery cell (4) is provided in multiple units, and the multiple battery cells (4) are installed at intervals in the mounting cavity (8). The energy storage layer (2) also includes an integrated module (16). All the battery cells (4) are electrically connected to the integrated module (16). The integrated module (16) is electrically connected to the converter device (11) and the temperature control device (12) respectively.

5. The energy storage cabinet according to claim 4, characterized in that, The integrated module (16) includes an integrated board (17) and a data acquisition board (18) connected together. The data acquisition board (18) is electrically connected to the integrated board (17). The number of data acquisition boards (18) is the same as the number of battery cells (4). The data acquisition boards (18) correspond one-to-one with the battery cells (4). The data acquisition board (18) is provided with a positive terminal connection position (19) and a negative terminal connection position (20). The positive terminal connection position (19) is pressed onto the positive terminal of the battery cell (4), and the negative terminal connection position (20) is pressed onto the negative terminal of the battery cell (4). The integrated board (17) is electrically connected to the converter device (11) and the temperature control device (12) respectively.

6. The energy storage cabinet according to claim 5, characterized in that, The energy storage layer (2) also includes a heat sink (21), which is disposed on the side of the support plate (7) facing away from the battery cell (4) and is used for heat dissipation of the battery cell (4).

7. The energy storage cabinet according to claim 5, characterized in that, The energy storage layer (2) also includes a fire-fighting module (13), which can spray aerogel into the energy storage chamber (9) when thermal runaway occurs.

8. The energy storage cabinet according to claim 5, characterized in that, The energy storage layer (2) also includes a pressure relief device (14). The sealing plate (6) is provided with a pressure relief hole. The pressure relief device (14) is installed in the pressure relief hole. The pressure relief device (14) can discharge the gas in the energy storage chamber (9) when thermal runaway occurs in the energy storage chamber (9).

9. The energy storage cabinet according to claim 5, characterized in that, The energy storage layer (2) is provided in multiple layers, and the multiple energy storage layers (2) are stacked on top of each other. The integrated module (16) of two adjacent energy storage layers (2) is electrically connected.

10. The energy storage cabinet according to claim 9, characterized in that, A fireproof and heat-insulating layer (22) is provided between two adjacent energy storage layers (2), and the fireproof and heat-insulating layer (22) is used for heat insulation between the two adjacent energy storage layers (2).

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