Battery energy storage system

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery energy storage system which comprises an energy storage container and a fire-fighting unit, an energy storage battery is arranged in the energy storage container, the fire-fighting unit comprises a fire-fighting box, a fire-fighting bottle and a fire-fighting pipeline, the fire-fighting box is installed outside the energy storage container, the fire-fighting bottle is arranged in the fire-fighting box, and the fire-fighting pipeline is connected with the fire-fighting box. One end of the fire-fighting pipeline is installed in the energy storage container, the other end of the fire-fighting pipeline penetrates through the energy storage container and the fire-fighting box and is communicated with the fire-fighting bottle, and a fire extinguishing medium in the fire-fighting bottle can be sprayed into the energy storage container through the fire-fighting pipeline. According to the battery energy storage system, more energy storage batteries can be arranged in the energy storage container and / or the volume of the energy storage batteries can be enlarged, so that the volume energy density of the energy storage container is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery energy storage system. Background Art

[0002] In the battery energy storage system industry, most battery energy storage systems use containers to integrate lithium-ion batteries to achieve the purpose of energy storage.

[0003] The current trend in the industry is to integrate more energy, that is, more battery boxes, in the limited container space. Therefore, the limited space inside the container is "every inch of land is valuable". Only by optimizing the use of the container's internal space can the overall volume energy density of the battery energy storage system be further improved, thereby improving the economy of the battery energy storage system.

[0004] At present, the industry requires that battery energy storage systems must be integrated with fire fighting units, and most fire fighting units use fire extinguishing agents to spray fire fighting in containers and battery boxes. As the volume energy density of battery energy storage systems increases, the number and volume of battery boxes will also increase, and the amount of fire fighting agents required will also increase, and the number and volume of fire fighting agent bottles will also increase accordingly.

[0005] At present, fire extinguishing agent bottles are generally installed in the containers of battery energy storage systems, which takes up a lot of valuable container volume and is not conducive to increasing the volume energy density of battery energy storage systems. In addition, to ensure the safety of battery energy storage systems, fire extinguishing agent bottles must be replaced regularly, and installing them in containers increases the difficulty of replacing fire extinguishing agent bottles.

[0006] Therefore, it is urgent to propose a battery energy storage system to solve the above technical problems. Utility Model Content

[0007] The utility model aims to provide a battery energy storage system, which can improve the volume energy density of the energy storage container.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] Battery energy storage system, including:

[0010] Energy storage container, wherein energy storage batteries are arranged in the energy storage container;

[0011] The fire-fighting unit includes a fire-fighting box, a fire-fighting bottle and a fire-fighting pipeline. The fire-fighting box is installed outside the energy storage container, and the fire-fighting bottle is arranged inside the fire-fighting box. One end of the fire-fighting pipeline is installed in the energy storage container, and the other end passes through the energy storage container and the fire-fighting box and is connected with the fire-fighting bottle. The fire-fighting medium in the fire-fighting bottle can be sprayed into the energy storage container through the fire-fighting pipeline.

[0012] Optionally, the fire fighting unit further includes a measurement and control module, which includes a nozzle and a controller. The nozzle is arranged on the fire fighting pipeline, and the controller is arranged in the fire fighting box. The controller is communicatively connected with the nozzle, and the controller is used to control the opening and closing of the nozzle.

[0013] Optionally, the fire-fighting pipeline includes a primary pipeline and a space-level pipeline. The primary pipeline passes through the energy storage container and the fire-fighting box and is connected to the fire-fighting bottle. The space-level pipeline is arranged in the energy storage container and is connected to the primary pipeline. The nozzle includes a space-level nozzle, and the space-level nozzle is arranged on the space-level pipeline.

[0014] Optionally, the energy storage battery includes a battery box, the nozzle also includes an entry-level nozzle, the entry-level nozzle is arranged in the battery box, and the fire-fighting pipeline also includes an entry-level pipeline, one end of the entry-level pipeline is connected to the primary pipeline, and the other end penetrates into the battery box and is connected to the entry-level nozzle.

[0015] Optionally, the measurement and control module also includes a fire detector, which is arranged in the energy storage container and is used to detect fire in the energy storage container. The controller is communicatively connected with the fire detector.

[0016] Optionally, the fire detector includes at least one of an explosion-proof composite detector, a temperature detector and a smoke detector.

[0017] Optionally, the battery energy storage system also includes a backup power supply, which can supply power to the measurement and control module.

[0018] Optionally, the backup power supply is arranged in the fire fighting box.

[0019] Optionally, the battery energy storage system further includes a PCS, which is electrically connected to the energy storage battery and is disposed in the energy storage container.

[0020] Optionally, a lifting lug is provided on the outer wall of the fire fighting box.

[0021] Beneficial effects of the utility model:

[0022] The battery energy storage system provided by the utility model installs the fire box on the outside of the energy storage container, and sets the fire bottle inside the fire box. The fire bottle does not occupy the internal space of the energy storage container. When the volume of the energy storage container remains unchanged, more energy storage batteries can be set inside the energy storage container, and / or the volume of the energy storage battery can be expanded, thereby improving the volume energy density of the energy storage container. In addition, setting the fire bottle inside the fire box reduces the difficulty of replacing the fire bottle, which has the effect of improving the efficiency of replacing the fire bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the battery energy storage system provided by the embodiment of the utility model Figure 1 ;

[0024] Figure 2 It is a layout diagram of the fire protection pipeline provided by the embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the internal structure of the fire extinguisher box provided in an embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the battery energy storage system provided by the embodiment of the utility model Figure 2 ;

[0027] Figure 5 It is a structural schematic diagram of a fire extinguisher box provided in an embodiment of the utility model.

[0028] In the figure:

[0029] 100. Energy storage container; 110. Electrical compartment; 120. Liquid cooling unit compartment; 210. Fire extinguisher box; 211. Lifting lug; 220. Fire bottle; 231. Controller; 232. Space-level nozzle; 234. Box-level nozzle; 235. Explosion-proof composite detector; 236. Temperature detector; 237. Smoke detector; 241. Primary pipeline; 242. Space-level pipeline; 243. Box-level pipeline; 244. Secondary pipeline; 245. Tertiary pipeline; 250. Water flooding interface; 300. Backup power supply; 410. Electric air inlet shutter; 420. Explosion-proof exhaust fan; 430. Pressure relief port; 440. Air guide hood. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] This embodiment provides a battery energy storage system that can improve the volume energy density of an energy storage container.

[0035] Specifically, Figures 1 to 3 As shown, the battery energy storage system includes an energy storage container 100 and a fire fighting unit, wherein an energy storage battery (not shown in the figure) is arranged in the energy storage container 100, and the fire fighting unit includes a fire fighting box 210, a fire fighting bottle 220 and a fire fighting pipeline, the fire fighting box 210 is installed outside the energy storage container 100, and the fire fighting bottle 220 is arranged in the fire fighting box 210, one end of the fire fighting pipeline is installed in the energy storage container 100, and the other end passes through the energy storage container 100 and the fire fighting box 210 and is connected with the fire fighting bottle 220, and the fire extinguishing medium in the fire fighting bottle 220 can be sprayed into the energy storage container 100 through the fire fighting pipeline.

[0036] Based on the above design, the battery energy storage system installs the fire box 210 on the outside of the energy storage container 100, and sets the fire bottle 220 in the fire box 210. The fire bottle 220 does not occupy the internal space of the energy storage container 100. When the volume of the energy storage container 100 remains unchanged, more energy storage batteries can be set in the energy storage container 100, and / or the volume of the energy storage battery can be expanded, thereby improving the volume energy density of the energy storage container 100. On the other hand, setting the fire bottle 220 in the fire box 210 reduces the difficulty of replacing the fire bottle 220, which has the effect of improving the replacement efficiency of the fire bottle 220.

[0037] Furthermore, if Figures 1 to 3As shown, the fire fighting unit also includes a measurement and control module, which includes a nozzle and a controller 231. The nozzle is arranged on the fire fighting pipeline, and the controller 231 is arranged in the fire fighting box 210. The controller 231 is connected to the nozzle for communication, and the controller 231 is used to control the opening and closing of the nozzle to realize the automatic control of the fire fighting unit. The controller 231 is arranged in the fire fighting box 210, which saves the space occupied by the controller 231 in the energy storage container 100, and further improves the volume energy density of the energy storage container 100. In addition, the controller 231 is arranged in the fire fighting box 210, and the staff can debug and control the controller 231 outside the energy storage container 100. Compared with the narrow space inside the energy storage container 100, debugging and controlling the controller 231 outside the energy storage container 100 can reduce the difficulty of operation and improve the safety of operation.

[0038] Furthermore, if Figures 1 to 3 As shown, the fire-fighting pipeline includes a primary pipeline 241 and a space-level pipeline 242. The primary pipeline 241 passes through the energy storage container 100 and the fire box 210 and is connected to the fire bottle 220. The space-level pipeline 242 is arranged in the energy storage container 100 and is connected to the primary pipeline 241. The nozzle includes a space-level nozzle 232, and the space-level nozzle 232 is arranged on the space-level pipeline 242. When a fire occurs in the energy storage battery, the fire-extinguishing medium in the fire bottle 220 can be sprayed into the energy storage container 100 through the space-level pipeline 242 and the space-level nozzle 232 to control the fire in the energy storage container 100.

[0039] Preferably, if Figures 1 to 3 As shown, the energy storage battery includes a battery box (not shown in the figure), the nozzle also includes an entry-level nozzle 234, and the entry-level nozzle 234 is arranged in the battery box. The fire-fighting pipeline also includes an entry-level pipeline 243, one end of the entry-level pipeline 243 is connected with the primary pipeline 241, and the other end penetrates into the battery box and is connected with the entry-level nozzle 234. When a fire occurs in the energy storage battery, the fire-extinguishing medium in the fire-fighting bottle 220 can be sprayed into the battery box through the entry-level pipeline 243 and the entry-level nozzle 234 to control the fire in the battery box, realize accurate and rapid fire extinguishing, and improve the safety of the battery energy storage system.

[0040] It should be noted that, in the present embodiment, the fire-fighting unit includes space-level fire-fighting (space-level pipeline 242 and space-level nozzle 232) and box-level fire-fighting (box-level pipeline 243 and box-level nozzle 234). In actual applications, the space-level fire-fighting and box-level fire-fighting can be selected and increased or decreased according to user needs. At this time, the number and / or volume of the fire bottles 220 will change with the changes in the above-mentioned selections. The design of arranging the fire bottles 220 in the fire box 210 makes the change in the number and / or volume of the fire bottles 220 not limited to the spatial layout of the energy storage container 100, and is therefore more flexible and convenient for layout design. It can be seen that the design of arranging the fire bottles 220 in the fire box 210 is conducive to meeting the user's choice of various fire-fighting needs and can reduce the difficulty of layout design of the fire bottles 220.

[0041] Alternatively, if Figures 1 to 3 As shown, a plurality of energy storage batteries are arranged in the energy storage container, wherein a plurality of energy storage batteries are arranged along the height direction of the energy storage container ( Figure 2 The energy storage battery rows are arranged in sequence along the length direction of the energy storage container ( Figure 2 The energy storage battery rows are then arranged in the x direction of the energy storage container 100. Figure 2 The fire-fighting pipeline also includes a secondary pipeline 244 and a tertiary pipeline 245, wherein each energy storage battery row corresponds to a secondary pipeline 244, each energy storage battery column corresponds to a tertiary pipeline 245, each energy storage battery corresponds to an entry-level pipeline 243, and the primary pipeline 241, the secondary pipeline 244, the tertiary pipeline 245 and the entry-level pipeline 243 are sequentially connected, so that the fire-extinguishing medium in the fire-fighting bottle 220 is sequentially sprayed into the battery box through the primary pipeline 241, the secondary pipeline 244, the tertiary pipeline 245, the entry-level pipeline 243 and the entry-level nozzle 234.

[0042] Furthermore, if Figures 1 to 3 As shown, the space-level pipeline 242 is located between two adjacent energy storage battery rows to improve the uniformity of the fire extinguishing effect on the internal environment of the energy storage container 100.

[0043] In this embodiment, the fire extinguishing medium in the fire bottle 220 is a common fire extinguishing agent in the art, and the fire extinguishing gas is sprayed from the space-level nozzle 232 and the box-level nozzle 234. In order to further improve the safety of the battery energy storage system, Figures 1 to 3 As shown, the energy storage container 100 provided in this embodiment is also provided with a water flooding interface 250, which is connected to the water supply pipe of the fire hydrant (not shown in the figure). When the fire is large, water can be poured into the energy storage container 100 through the water flooding interface 250 to control the fire.

[0044] Alternatively, if Figures 1 to 3 As shown, the measurement and control module also includes a fire detector, which is arranged in the energy storage container 100. The fire detector is used to detect the fire in the energy storage container 100. The controller 231 is communicatively connected with the fire detector. When the fire detector detects a fire in the energy storage container 100, the fire detector sends a signal to the controller 231, and the controller 231 controls the space-level sprinkler 232 and / or the box-level sprinkler 234 to spray the fire extinguishing medium.

[0045] Furthermore, the fire detector includes at least one of an explosion-proof composite detector 235, a temperature detector 236, and a smoke detector 237, and monitors the fire from multiple dimensions to improve the accuracy and sensitivity of fire monitoring. In this embodiment, the fire detector includes an explosion-proof composite detector 235, a temperature detector 236, and a smoke detector 237, and the explosion-proof composite detector 235, the temperature detector 236, and the smoke detector 237 are arranged on the secondary pipeline 244 at intervals.

[0046] In the prior art, the power conversion system (PCS) is usually external (that is, the PCS is set outside the energy storage container 100), and the PCS is a necessary component of the battery energy storage system. If the battery energy storage system is to achieve DC to AC conversion, it must be converted through the PCS. The existing external PCS seems to separate the PCS and the battery energy storage system. In actual applications, after the battery energy storage system is transported as a whole to the installation site, the PCS needs to be installed and debugged at the installation site. The process is cumbersome and the technical cost is high. In order to solve this technical problem, the present embodiment sets the PCS electrically connected to the energy storage battery inside the energy storage container 100, such as Figures 1 to 3 As shown, an electrical compartment 110 is separated inside the energy storage container 100, the PCS is arranged in the electrical compartment 110, and the PCS and the energy storage battery are integrated in the energy storage container 100, thereby realizing a built-in design of the PCS. In practical applications, the PCS can be installed and debugged in the factory, eliminating the need for installation and debugging of the PCS at the installation site, thereby reducing the construction difficulty and technical cost at the installation site.

[0047] Alternatively, if Figures 1 to 3 As shown, the battery energy storage system also includes a liquid cooling unit (not shown in the figure), which is used to cool the energy storage battery. A liquid cooling unit cabin 120 is also separated in the energy storage container 100. The liquid cooling unit is installed in the liquid cooling unit cabin 120, eliminating the need to install and debug the liquid cooling unit at the installation site.

[0048] Alternatively, if Figures 1 to 4As shown, the energy storage container 100 is provided with an electric air inlet shutter 410, an explosion-proof exhaust fan 420 and a pressure relief port 430 to realize the circulation of air inside and outside the energy storage container 100 and ensure the stability and reliability of the internal environment of the energy storage container 100. Furthermore, an air guide hood 440 is provided at the pressure relief port 430 to guide the pressure relief gas.

[0049] Alternatively, if Figures 1 to 4 As shown, the battery energy storage system also includes a backup power supply 300. When a power outage occurs, the backup power supply 300 can supply power to the measurement and control module (controller 231, space-level nozzle 232, box-level nozzle 234, explosion-proof composite detector 235, temperature detector 236, and smoke detector 237, etc.), liquid cooling unit, lighting module, electric air inlet shutter 410, and explosion-proof exhaust fan 420, etc., to ensure the normal operation of each electrical equipment in the battery energy storage system, especially to supply power to each electrical equipment in the fire protection unit during a power outage, thereby reducing the fire safety hazard of the battery energy storage system during a power outage.

[0050] Preferably, if Figures 1 to 4 As shown, the backup power supply 300 is arranged in the fire extinguishing box 210. Compared with the case where the backup power supply 300 is arranged in the energy storage container 100, in this embodiment, the design of arranging the backup power supply 300 in the fire extinguishing box 210 can facilitate the staff to regularly charge the backup power supply 300 and perform other maintenance work.

[0051] Alternatively, if Figures 1 to 5 As shown, a lifting lug 211 is provided on the outer wall of the fire extinguisher box 210, which is convenient for lifting the fire extinguisher box 210 and realizing rapid installation and commissioning at the installation site. Further, the lifting lug 211 is provided on the outer top wall of the fire extinguisher box 210, which is convenient for lifting. Preferably, there are multiple lifting lugs 211, and the multiple lifting lugs 211 are evenly distributed on the outer top wall of the fire extinguisher box 210. For example, the lifting lugs 211 can be two, three, four or more, depending on the volume and weight of the fire extinguisher box 210.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A battery energy storage system, characterized in that: include: An energy storage container (100), wherein an energy storage battery is arranged in the energy storage container (100); A fire fighting unit, the fire fighting unit comprising a fire fighting box (210), a fire fighting bottle (220) and a fire fighting pipeline, the fire fighting box (210) being installed outside the energy storage container (100), the fire fighting bottle (220) being arranged inside the fire fighting box (210), one end of the fire fighting pipeline being installed inside the energy storage container (100), and the other end being passed through the energy storage container (100) and the fire fighting box (210) and being connected to the fire fighting bottle (220), and the fire extinguishing medium in the fire fighting bottle (220) being able to be sprayed into the energy storage container (100) through the fire fighting pipeline.

2. The battery energy storage system according to claim 1, characterized in that: The fire-fighting unit further includes a measurement and control module, which includes a nozzle and a controller (231). The nozzle is arranged on the fire-fighting pipeline, and the controller (231) is arranged in the fire-fighting box (210). The controller (231) is communicatively connected with the nozzle, and the controller (231) is used to control the opening and closing of the nozzle.

3. The battery energy storage system according to claim 2, characterized in that: The fire-fighting pipeline comprises a primary pipeline (241) and a space-level pipeline (242); the primary pipeline (241) passes through the energy storage container (100) and the fire-fighting box (210) and is in communication with the fire-fighting bottle (220); the space-level pipeline (242) is arranged in the energy storage container (100) and is in communication with the primary pipeline (241); and the nozzle comprises a space-level nozzle (232); and the space-level nozzle (232) is arranged on the space-level pipeline (242).

4. The battery energy storage system according to claim 3, characterized in that: The energy storage battery comprises a battery box, the nozzle further comprises an entry-level nozzle (234), the entry-level nozzle (234) is arranged in the battery box, and the fire-fighting pipeline further comprises an entry-level pipeline (243), one end of the entry-level pipeline (243) is connected to the primary pipeline (241), and the other end penetrates into the battery box and is connected to the entry-level nozzle (234).

5. The battery energy storage system according to claim 2, characterized in that: The measurement and control module further comprises a fire detector, which is arranged in the energy storage container (100) and is used to detect a fire condition in the energy storage container (100). The controller (231) is in communication connection with the fire detector.

6. The battery energy storage system according to claim 5, characterized in that: The fire detector comprises at least one of an explosion-proof composite detector (235), a temperature detector (236) and a smoke detector (237).

7. The battery energy storage system according to claim 2, characterized in that: The battery energy storage system also includes a backup power supply (300), and the backup power supply (300) can supply power to the measurement and control module.

8. The battery energy storage system according to claim 7, characterized in that: The backup power supply (300) is arranged in the fire fighting box (210).

9. The battery energy storage system according to claim 1, characterized in that: The battery energy storage system further comprises a PCS, the PCS is electrically connected to the energy storage battery, and the PCS is arranged in the energy storage container (100).

10. The battery energy storage system according to claim 1, characterized in that: A lifting lug (211) is provided on the outer wall of the fire fighting box (210).

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