Container and energy storage system

Abstract

The utility model relates to the technical field of energy storage, provide a container and energy storage system. The container, including: box, a plurality of first baffle and a plurality of second baffle, a plurality of first baffle are sequentially arranged along the length direction of box, to separate the space in the box into first accommodation storehouse and a plurality of second accommodation storehouse, and the first accommodation storehouse is used to accommodate fire -fighting module and control module, and the first baffle is fire baffle, every second baffle is arranged in a second accommodation storehouse, and the second baffle separates the space in the second accommodation storehouse into upper layer storehouse and lower layer storehouse, and the upper layer storehouse is used to accommodate cooling module and energy storage alternator, and the lower layer storehouse is used to accommodate battery cluster. The container, the space in the box is separated into a plurality of chambers, after the thermal runaway of a certain battery cluster, only need to carry out fire extinguishing to the lower layer storehouse, and the influence range of thermal runaway is small, avoid the problem of the easy lead of container whole damage when the thermal runaway of large capacity battery cell occurs.

Description

Technical Field

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

[0002] Currently, most mainstream large-scale energy storage systems are constructed using lithium iron phosphate (LFP) prismatic cells, integrated into systems via 20-foot standard prefabricated modules (6058mm × 2438mm × 2896mm). To improve economic efficiency, the industry generally increases the capacity per module through two approaches: upgrading cell capacity and optimizing structure. Firstly, it uses large-capacity cells (≥300Ah), with typical systems achieving energy densities of up to 5MWh; the next generation of products is moving towards cells with capacities of ≥500Ah. Secondly, it improves the volumetric packing ratio of cells through structural design of battery clusters.

[0003] However, the above-mentioned technical route has significant technical bottlenecks: when the capacity of lithium iron phosphate cells exceeds 300Ah, their intrinsic thermal stability deteriorates significantly. Especially under abnormal operating conditions, thermal runaway of cells in a single battery pack can easily trigger a chain reaction, leading to a sharp increase in the risk of thermal runaway and threatening the overall safety of the container. Utility Model Content

[0004] This invention provides a container and energy storage system to address the shortcomings of existing technologies where thermal runaway of batteries within a single battery pack can easily trigger a chain reaction.

[0005] This utility model provides a container, comprising: a container body; a plurality of first partitions, the plurality of first partitions being arranged sequentially along the length direction of the container body to divide the space inside the container body into a first accommodating compartment and a plurality of second accommodating compartments, wherein the first accommodating compartment is used to accommodate a fire protection module and a control module, and the first partitions are fireproof partitions; a plurality of second partitions, each of the second partitions being disposed within a second accommodating compartment, the second partitions dividing the space within the second accommodating compartment into an upper compartment and a lower compartment, the upper compartment being used to accommodate a cooling module and an energy storage AC device, and the lower compartment being used to accommodate a battery cluster.

[0006] According to the present invention, a container further includes: a plurality of fire-fighting pipes, respectively disposed in a plurality of upper compartments, the first end of each fire-fighting pipe being connected to the fire-fighting module; and a plurality of fire sprinklers, respectively disposed in a plurality of lower compartments, each fire sprinkler being connected to the second end of one of the fire-fighting pipes.

[0007] According to the present invention, a container is provided, wherein the first partition includes a frame and a fireproof board, the fireproof board is disposed on the frame, a plurality of the frames are arranged sequentially along the length of the container body, the height of each frame is greater than the height of the fireproof board, and the second partition is disposed on top of the fireproof board.

[0008] According to the present invention, a container is provided in which the frame is provided with a grid in the portion located in the upper compartment, so that multiple upper compartments can be connected.

[0009] According to the present invention, a container also includes a cover, which is disposed on the top surface of the container and detachably connected to the container.

[0010] According to the present invention, a container also includes multiple doors, each of which is openable and closable in a lower compartment; each of the upper compartments is provided with louvers.

[0011] This utility model also provides an energy storage system, including: a fire-fighting module, a control module, multiple energy storage converters, multiple cooling modules, multiple battery clusters, and a container as described above. The fire-fighting module and the control module are located in the first compartment of the container, the energy storage converters and the cooling modules are located in the upper compartment of the container, and the battery clusters are located in the lower compartment of the container.

[0012] According to the present invention, an energy storage system is provided, wherein the cooling module includes a fan, which is used to dissipate heat from the energy storage AC device.

[0013] According to the present invention, an energy storage system further includes multiple cooling pipes. Each battery cluster is thermally coupled to a cooling module through the cooling pipe. Each cooling pipe includes: a first pipe arranged along the height direction of the battery cluster and connected to the cooling module; and multiple second pipes arranged sequentially along the height direction of the battery cluster. The two ends of each second pipe are respectively connected to the first pipe and the cooling module, so that the cooling module, the first pipe, and the second pipe form a cooling circuit. Each second pipe is thermally coupled to one battery pack of the battery cluster.

[0014] According to the present invention, an energy storage system is provided in which the cooling module integrates a dehumidifier.

[0015] The container provided by this utility model divides the internal space of the container into multiple compartments by setting a first partition and a second partition inside the container, so that the battery clusters are set up separately from other devices. In the event of thermal runaway of a certain battery cluster, only the lower compartment needs to be extinguished by fire. The impact range of thermal runaway is small, avoiding the problem that the entire container is easily damaged when large-capacity battery cells undergo thermal runaway, and extending the service life of the container. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the 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.

[0017] Figure 1 This is one of the structural schematic diagrams of the container provided by this utility model.

[0018] Figure 2 This is the second structural schematic diagram of the container provided by this utility model.

[0019] Figure 3 This is the third structural schematic diagram of the container provided by this utility model.

[0020] Figure 4 yes Figure 1 The diagram shows the structure of the first accommodating compartment.

[0021] Figure 5 This is a structural diagram of the cooling module.

[0022] Figure label:

[0023] 10. First partition; 11. Frame; 12. Fireproof board; 20. Second partition; 30. Fire protection piping; 100. Box body; 101. First storage compartment; 102. Second storage compartment; 110. Cover; 111. Grille; 120. Door; 130. Louver; 1021. Upper compartment; 1022. Lower compartment; 200. Cooling module; 201. Circulation pump; 202. Expansion tank; 203. Coil; 204. Condenser; 205. Compressor; 206. Dryer; 207. Expansion valve; 208. Cold plate; 209. Dehumidifier; 210. Fan; 211. First piping; 212. Second piping; 300. Energy storage AC device; 400. Battery cluster. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions 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 scope of protection of this utility model.

[0025] The following is combined Figures 1-5 This invention describes the container and energy storage system of the present invention.

[0026] like Figure 1 As shown, in an embodiment of this utility model, the container includes: a container body 100, a plurality of first partitions 10, and a plurality of second partitions 20. The plurality of first partitions 10 are arranged sequentially along the length of the container body 100 to divide the space within the container body 100 into a first accommodating compartment 101 and a plurality of second accommodating compartments 102. The first accommodating compartment 101 is used to accommodate a fire-fighting module and a control module. Each second partition 20 is disposed within a second accommodating compartment 102, and the second partition 20 divides the space within the second accommodating compartment 102 into an upper compartment 1021 and a lower compartment 1022. The upper compartment 1021 is used to accommodate a cooling module 200 and an energy storage AC device 300, and the lower compartment 1022 is used to accommodate a battery cluster 400.

[0027] Specifically, the first partition 10 divides the space within the housing 100 into a first accommodating compartment 101 and multiple second accommodating compartments 102. The second partition 20 divides the second accommodating compartments 102 into upper compartments 1021 and lower compartments 1022. This allows the battery clusters 400, cooling module 200, energy storage AC device 300, fire protection module, and control module to be installed separately, and each lower compartment 1022 can accommodate one or more battery clusters 400. In this embodiment, the first partition 10 is a fireproof partition. When a battery cluster 400 in a certain lower compartment 1022 experiences thermal runaway, it will not affect the battery clusters 400 in other lower compartments 1022 in a short period of time, thus preventing other battery clusters 400 from experiencing thermal runaway. The impact range of the thermal runaway is small.

[0028] In this embodiment, the second partition 20 is disposed between a pair of adjacent first partitions 10, thereby dividing the second accommodating compartment 102 into an upper compartment 1021 and a lower compartment 1022.

[0029] The container provided in this embodiment of the utility model divides the internal space of the container into multiple compartments by setting a first partition and a second partition inside the container, so that the battery clusters are set up separately from other devices. After the thermal runaway of a certain battery cluster, only the lower compartment needs to be fire extinguished. The impact range of thermal runaway is small, avoiding the problem that the entire container is easily damaged when large-capacity battery cells undergo thermal runaway, and extending the service life of the container.

[0030] like Figure 2As shown, in this embodiment of the invention, the container further includes multiple fire-fighting pipes 30 and multiple fire sprinklers. The multiple fire-fighting pipes 30 are respectively installed in multiple upper compartments 1021, with the first end of each fire-fighting pipe 30 connected to a fire-fighting module. Each lower compartment 1022 is equipped with a fire sprinkler, and each fire sprinkler is connected to the second end of a fire-fighting pipe 30. When a battery cluster 400 in a lower compartment 1022 experiences thermal runaway, the fire sprinkler sprays extinguishing agent to extinguish the fire. In this embodiment, dividing the space inside the container 100 into multiple lower compartments 1022 achieves zoned centralized fire suppression, reduces the fire suppression space, improves the fire suppression speed, and minimizes the impact range of thermal runaway.

[0031] Furthermore, each lower-level compartment 1022 is also equipped with a detector to detect whether a fire has occurred within that compartment. When a fire occurs in a lower-level compartment 1022, the detector sends a signal to the control module, which then activates the fire suppression module, causing the fire sprinklers to spray extinguishing agent. Optionally, the detector can be a smoke detector, a light detector, or a heat detector, etc.

[0032] In one embodiment of this utility model, the first partition 10 can be a single piece of board; in another optional embodiment, the first partition 10 includes a frame 11 and a fireproof board 12. Multiple frames 11 are arranged sequentially along the length of the box 100, that is, the multiple frames 11 divide the space inside the box 100 into a first accommodating compartment 101 and multiple second accommodating compartments 102.

[0033] Since the frame 11 has a hollow structure, it cannot provide fire protection. Therefore, in an optional embodiment of this utility model, a fireproof plate 12 is provided on one side of each frame 11, so that the fireproof plate 12 is fitted to the frame 11. In this embodiment, the frame 11 can be a rectangular frame with multiple connecting ribs inside to improve the strength of the frame 11. Optionally, the fireproof plate 12 can also be embedded in the frame 11. In this embodiment, the frame 11 can be a rectangular frame with a connecting rib inside, dividing the rectangular frame into an upper frame and a lower frame. The fireproof plate 12 is embedded in the lower frame. The height of the fireproof plate 12 is less than the height of the frame 11. The second partition 20 is provided on the top of the fireproof plate 12 to divide the second accommodating compartment 102 into an upper compartment 1021 and a lower compartment 1022.

[0034] Furthermore, the portion of the frame 11 located within the upper compartment 1021 is provided with a grille 111 to connect multiple upper compartments 1021, allowing the cooling capacity of the cooling module 200 to be conducted through the grille 111.

[0035] like Figure 3As shown, in this embodiment of the present invention, the container also includes a cover 110, which covers the top surface of the container body 100 and is detachably connected to the container body 100. The cover 110 on the top of the container body 100 prevents direct sunlight from the energy storage AC device 300 and cooling module 200 during summer, thus avoiding impact on their performance and power consumption.

[0036] like Figure 3 As shown, the container also includes multiple doors 120, each door 120 being openable and closable in a lower compartment 1022. By providing the doors 120, the battery cluster 400 can be isolated from the outside when the doors 120 are closed. Furthermore, each upper compartment 1021 is equipped with louvers 130 for heat dissipation.

[0037] like Figure 4 As shown, the first storage compartment 101 is also equipped with a door 120. The space inside the first storage compartment 101 is a whole. The first storage compartment 101 is used to house the fire protection module and the control module. The door 120 is equipped with louvers 130 for heat dissipation.

[0038] This utility model embodiment also provides an energy storage system, including: a fire-fighting module, a control module, multiple battery clusters 400, multiple energy storage AC devices 300, multiple cooling modules 200, and a container. The fire-fighting module, control module, energy storage AC devices 300, cooling modules 200, and battery clusters 400 are all housed within the container.

[0039] Specifically, the fire protection module and control module are located in the first storage compartment 101, the cooling module 200 and the energy storage AC device 300 are located in the upper compartment 1021, and the battery cluster 400 is located in the lower compartment 1022.

[0040] The energy storage system provided in this embodiment of the utility model uses a container with multiple compartments to separate battery clusters from other devices. In the event of thermal runaway of a battery cluster, only the lower compartment needs to be extinguished. The impact of thermal runaway is small, avoiding the problem that the entire container is easily damaged when large-capacity cells experience thermal runaway.

[0041] In this embodiment of the invention, each upper compartment 1021 is equipped with an energy storage exchanger 300 and a cooling module 200, enabling individual cooling of the battery clusters 400 in each lower compartment 1022. In this embodiment, each cooling module 200 includes a fan 210, which is thermally coupled to the energy storage exchanger 300.

[0042] Specifically, such as Figure 5As shown, the cooling module 200 includes: a circulating pump 201, an expansion tank 202, a coil 203, a condenser 204, a compressor 205, a dryer 206, an expansion valve 207, and multiple cold plates 208. The circulating pump 201, expansion tank 202, coil 203, condenser 204, compressor 205, dryer 206, and expansion valve 207 constitute a refrigeration system. Specifically, the circulating pump 201, energy storage AC unit 300, expansion tank 202, and coil 203 are sequentially connected to form a circulation loop; the condenser 204, compressor 205, cold plates 208, expansion valve 207, and dryer 206 are sequentially connected to form a circulation loop; the condenser 204 is thermally coupled to the coil 203. The cooling energy generated by the refrigeration system is conducted to the cold plates 208, which cool the battery cluster 400, achieving zoned management of the heat of the battery cluster 400. In this embodiment, the working principle of the refrigeration system is the same as that of an air conditioning refrigeration system, and therefore will not be described in detail.

[0043] When the ambient temperature is high, the fan 210 is used to dissipate heat from the energy storage exchanger 300, and the heat generated by the energy storage exchanger 300 during operation can be discharged through the louvers 130. When the ambient temperature is low, the fan 210 can conduct the heat generated by the energy storage exchanger 300 to the surrounding area of ​​the cooling module 200, improve the temperature in the upper compartment 1021, enhance the heating effect of the circulating pump 201 in the cooling module 200, and improve the problem of poor heating effect of the circulating pump 201 at low ambient temperatures.

[0044] In related technologies, energy storage systems often employ centralized liquid cooling, where a single cooling water unit extends through piping to cool the entire system. When the energy storage system integrates an energy storage AC unit, the cooling water unit also needs a separate water path to cool the AC unit. Because the AC unit operates at a high temperature, the temperature difference between it and the battery cluster is significant, increasing the cooling water unit's energy consumption. In this embodiment, the energy storage AC unit 300 is cooled by a fan 210, while the battery cluster 400 is cooled by a cooling module 200. The cooling module 200 does not need to cool the AC unit 300, thus reducing its power consumption.

[0045] Furthermore, the energy storage system also includes multiple cooling pipes, with each battery cluster 400 thermally coupled to the cooling module 200 via these cooling pipes. Each cooling pipe includes a first pipe 211 and multiple second pipes 212. The first pipe 211 is arranged along the height direction of the battery cluster 400 and is connected to the cooling module 200. The multiple second pipes 212 are arranged sequentially along the height direction of the battery cluster 400, with both ends of each second pipe 212 connected to the first pipe 211 and the cooling module 200, respectively, so that the cooling module 200, the first pipe 211, and the second pipes 212 form a cooling circuit, and each second pipe 212 is thermally coupled to one battery pack of the battery cluster 400.

[0046] Specifically, the refrigerant in the cold plate 208 enters each of the second pipes 212 along the first pipe 211. The second pipes 212 are arranged circumferentially around the battery pack to cool it. After absorbing heat, the refrigerant enters the cooling module 200 for cooling and then flows back into the first pipe 211. In this embodiment, two second pipes 212 are wound around the outside of each battery pack. The two ends of each second pipe 212 are connected to the first pipe 211 and the cooling module 200, respectively, to achieve uniform cooling of the battery pack.

[0047] Furthermore, to improve the cooling effect, two first pipes 211 can be provided in each battery cluster 400, and the two first pipes 211 are arranged in parallel. Each first pipe 211 is connected to a second pipe 212, and the two second pipes 212 are arranged along the circumference of a battery pack to improve the cooling effect of the battery pack. In this embodiment, the cooling pipes are directly connected to the cooling module 200, which shortens the laying length of the cooling pipes and reduces heat loss.

[0048] like Figure 5 As shown, the cooling module 200 also integrates a dehumidifier 209. In this embodiment, the dehumidifier 209 is a cooling coil. The cooling coil condenses water in the air into liquid water through a refrigeration cycle and discharges it, solving the problems of condensation inside the battery cluster 400 and easy corrosion of the cell casing. Integrating the cooling coil with the refrigeration system eliminates the need for a dedicated dehumidifier in the energy storage system, simplifying the structure of the energy storage system and reducing its space occupancy.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A container, characterized in that, include: Box; Multiple first partitions are arranged sequentially along the length of the box to divide the space inside the box into a first accommodating compartment and multiple second accommodating compartments, wherein the first accommodating compartment is used to accommodate the fire protection module and the control module, and the first partitions are fireproof partitions; Multiple second partitions are provided, each second partition being disposed within a second accommodating compartment. The second partitions divide the space within the second accommodating compartment into an upper compartment and a lower compartment. The upper compartment is used to accommodate a cooling module and an energy storage AC device, and the lower compartment is used to accommodate a battery cluster.

2. The container according to claim 1, characterized in that, Also includes: Multiple fire-fighting pipes are respectively installed in multiple upper compartments, and the first end of each fire-fighting pipe is connected to the fire-fighting module; Multiple fire sprinklers are respectively installed in multiple lower compartments, and each fire sprinkler is connected to the second end of a fire pipeline.

3. The container according to claim 1, characterized in that, The first partition includes a frame and a fireproof board. The fireproof board is disposed on the frame. A plurality of frames are arranged sequentially along the length of the box. The height of each frame is greater than the height of the fireproof board. The second partition is disposed on top of the fireproof board.

4. The container according to claim 3, characterized in that, The portion of the frame located within the upper compartment is provided with a grid to allow the multiple upper compartments to connect.

5. The container according to claim 1, characterized in that, It also includes a cover, which is disposed on the top surface of the box and is detachably connected to the box.

6. The container according to claim 1, characterized in that, It also includes multiple doors, each of which is openable and closable in one of the lower compartments; Each of the upper compartments is equipped with louvers.

7. An energy storage system, characterized in that, include: The container comprises a fire-fighting module, a control module, multiple energy storage converters, multiple cooling modules, multiple battery clusters, and any one of claims 1-6, wherein the fire-fighting module and the control module are disposed in the first compartment of the container, the energy storage converters and the cooling modules are disposed in the upper compartment of the container, and the battery clusters are disposed in the lower compartment of the container.

8. The energy storage system according to claim 7, characterized in that, The cooling module includes a fan for dissipating heat from the energy storage AC unit.

9. The energy storage system according to claim 7, characterized in that, It also includes multiple cooling pipes, each of the battery clusters being thermally coupled to the cooling module through the cooling pipes, each of the cooling pipes comprising: A first pipeline is provided along the height direction of the battery cluster, and the first pipeline is connected to the cooling module; Multiple second pipes are arranged sequentially along the height direction of the battery cluster. The two ends of each second pipe are connected to the first pipe and the cooling module, respectively, so that the cooling module, the first pipe and the second pipe form a cooling circuit. Each second pipe is thermally coupled to one battery pack of the battery cluster.

10. The energy storage system according to claim 7, characterized in that, The cooling module integrates a dehumidifier.

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