Energy storage system

Abstract

The utility model provides an energy storage system. The energy storage system comprises a box body; the energy storage device is arranged in the box body, the energy storage device comprises N battery clusters arranged in the first direction, each battery cluster comprises M battery packs connected with one another in the second direction perpendicular to the first direction, N is larger than or equal to 4 and smaller than or equal to 6, and M is larger than or equal to 5 and smaller than or equal to 8. The number of parts in the energy storage system can be reduced, the space utilization rate of the box body is improved, the manufacturing time is effectively reduced, and the system manufacturing cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to an energy storage system. Background Art

[0002] Most existing containerized energy storage systems use small cells of 280Ah to 320Ah, which means that the number of battery clusters in the energy storage system reaches 10 or even 12 clusters, resulting in a large number of internal components in the energy storage system and serious waste of container space. In addition, the power of containerized energy storage systems is mostly 3MWh to 4MWh, which cannot effectively improve the energy density of the system, resulting in low energy density of the overall system and excessively high unit power cost of the system. Utility Model Content

[0003] In view of this, the present application provides an energy storage system, which can reduce the number of internal components and improve the utilization rate of the box space.

[0004] To solve the above problems, the technical solutions provided by this application are as follows:

[0005] The present application provides an energy storage system, comprising:

[0006] Box; and

[0007] An energy storage device is disposed in the box, the energy storage device includes N battery clusters arranged along a first direction, the battery cluster includes M battery packs interconnected in a second direction perpendicular to the first direction, wherein 4≤N≤6, 5≤M≤8.

[0008] In an optional embodiment of the present application, each of the battery packs includes Q interconnected batteries, where 52≤Q≤78, and the battery capacity of the battery is 628Ah-942Ah.

[0009] In an optional embodiment of the present application, the energy storage system further includes a plurality of support frames arranged along the first direction, one of the support frames includes a plurality of receiving cavities, and the battery packs of the same battery cluster are received in the receiving cavities.

[0010] In an optional embodiment of the present application, the energy storage system includes a battery thermal management system, a fire protection system and a combiner cabinet, all of which are located in the box and connected to the battery cluster.

[0011] In an optional embodiment of the present application, the box includes:

[0012] The partition includes a first partition, which divides the box into a first accommodating chamber and a second accommodating chamber, the N battery clusters are arranged in the first accommodating chamber along the first direction, and the battery thermal management system, the fire protection system and the junction cabinet are located in the second accommodating chamber.

[0013] In an optional embodiment of the present application, the partition also includes a second partition connected to the first partition, the second partition divides the second housing chamber into a first sub-housing chamber and a second sub-housing chamber, the battery thermal management system is located in the first sub-housing chamber, and the fire protection system and the junction cabinet are located in the second sub-housing chamber.

[0014] In an optional embodiment of the present application, the first partition plate is provided with a plurality of wiring holes, and the plurality of wiring holes respectively connect the first accommodating chamber with the first sub-accommodating chamber and the second sub-accommodating chamber.

[0015] In an optional embodiment of the present application, the battery thermal management system includes a primary liquid cooling pipeline, a secondary liquid cooling pipeline, a tertiary liquid cooling pipeline and a thermal management host, one end of the tertiary liquid cooling pipeline is connected to the battery pack, and the other end is connected to the secondary liquid cooling pipeline, one end of the secondary liquid cooling pipeline away from the tertiary liquid cooling pipeline is connected to the primary liquid cooling pipeline, and one end of the first liquid cooling pipeline away from the secondary liquid cooling pipeline is connected to the thermal management host.

[0016] In an optional embodiment of the present application, the fire protection system includes multiple first-level fire protection pipelines, second-level fire protection pipelines, third-level fire protection pipelines and a fire protection host. One end of the third-level fire protection pipeline is connected to the battery pack, and the other end is connected to the second-level fire protection pipeline. One end of the second-level fire protection pipeline away from the third-level fire protection pipeline is connected to the first-level fire protection pipeline, and one end of the first-level fire protection pipeline away from the second-level fire protection pipeline is connected to the fire protection host.

[0017] In an optional embodiment of the present application, the combiner cabinet is connected to the N battery clusters;

[0018] The battery thermal management system, the fire protection system and the combiner cabinet are located in an extension direction of the N battery clusters in the first direction.

[0019] The energy storage system provided by the present application includes at least the following beneficial effects: the energy storage system includes a box; and an energy storage device, which is arranged in the box, the energy storage device includes N battery clusters arranged along a first direction, and the battery cluster includes M battery packs connected to each other in a second direction perpendicular to the first direction, wherein 4≤N≤6, 5≤M≤8. It can reduce the number of internal components of the energy storage system, improve the utilization rate of the box space, effectively reduce the manufacturing time, and reduce the system manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A partial structural diagram of an energy storage system provided in one embodiment of the present application.

[0022] Figure 2 A schematic diagram of the structure of an energy storage system provided in one embodiment of the present application.

[0023] Figure 3 A front view of a partial structure of an energy storage system provided in one embodiment of the present application.

[0024] Figure 4 A right side view of a partial structure of an energy storage system provided in one embodiment of the present application.

[0025] Figure 5 A schematic diagram of the structure of a partition of an energy storage system provided in one embodiment of the present application.

[0026] Figure 6 A top view of a partial structure of an energy storage system provided in one embodiment of the present application.

[0027] Figure numerals: 100-energy storage system; 10-box; 20-energy storage device; 201-battery cluster; 202-battery pack; 203-support frame; 204-battery; 30-thermal management host; 40-fire host; 50-junction cabinet; 60-partition; 601-first partition; 602-second partition; 603-first accommodating chamber; 604-second accommodating chamber; 6041-first sub-accommodating chamber; 6042-second sub-accommodating chamber; 70-fire backup battery. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] The present application may repeat reference numerals and / or reference letters in different implementations. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various implementations and / or settings discussed.

[0031] In the related technology, the battery capacity of 20-foot container energy storage systems is mostly 3MWh~4MWh, and most of the dimensions exceed the size of conventional 20-foot containers, making transportation difficult. Most existing energy storage systems use small cells of 280Ah~320Ah in layout, which usually makes the battery clusters of the energy storage system reach 10 or even 12 clusters. There are many internal components and serious space waste. In addition, there is also the problem of not being able to effectively improve the energy density of the system, the overall system energy density is not high, and the system unit power cost is too high.

[0032] The energy storage system provided in the present application will be described in detail below in conjunction with specific embodiments and drawings.

[0033] See also Figure 1 , Figure 2 as well as Figure 3 , the present application provides an energy storage system 100, comprising:

[0034] Box 10; and

[0035] The energy storage device 20 is arranged in the box 10, and the energy storage device 20 includes N battery clusters 201 arranged along a first direction X, and the battery cluster 201 includes M battery packs 202 connected to each other in a second direction Y perpendicular to the first direction X, wherein 4≤N≤6, 5≤M≤8.

[0036] Specifically, the box 10 is a standard 20-foot container, and the energy storage device 20 is located inside the box 10. The number of the battery clusters 201 is 4-6, which reduces the number of internal components.

[0037] For example, when the number of battery clusters 201 is 6, the number of internal components can be reduced by more than 40%, which greatly reduces the complexity and cost of the process and improves the space utilization of the box 10. In one embodiment, multiple battery clusters 201 are connected in parallel, or in series according to actual needs. The specific connection relationship of multiple battery clusters 201 is subject to actual application, and the connection relationship of multiple battery clusters 201 is not limited in this application.

[0038] In an optional embodiment of the present application, each of the battery packs 202 includes Q interconnected batteries 204, where 52≤Q≤78, and the battery capacity of the battery 204 is 628Ah-942Ah.

[0039] For example, the number of battery clusters 201 is 6, the number of battery packs 202 is 8, and the battery capacity of the battery 204 in the battery pack 202 is 628Ah, which can achieve a power of more than 5MWh, greatly improving the overall energy density of the energy storage system 100, and based on the number of battery clusters 201, it also has the effect of improving the space utilization of the box 10 and reducing the number of internal components, effectively reducing the manufacturing hours and reducing the system manufacturing cost. In other embodiments, when the number of battery clusters 201 is reduced, the battery can, for example, adaptively select a larger capacity, which at least needs to meet the power of more than 5MWh, which is subject to actual application.

[0040] Specifically, the battery 204 is, for example, a cylindrical battery or a square battery. The shape of the battery 204 is not limited in the present application and is subject to actual application.

[0041] In an optional embodiment of the present application, the energy storage system further includes a plurality of support frames 203 arranged along the first direction X, and one of the support frames 203 includes a plurality of receiving cavities, and the battery packs 202 of the same battery cluster 201 are received in the receiving cavities.

[0042] Specifically, the number of the support racks 203 is the same as the number of the battery clusters 201, and the arrangement direction is also the same as that of the battery clusters 201. N battery clusters 201 are located in the box 10 and arranged along the first direction X, and N support racks 203 are also located in the box 10 and arranged along the first direction X. Further, each support rack 203 includes multiple layers, multiple layers are arranged along the second direction Y, and battery packs 202 are placed on each layer. The number of layers is the same as the number of battery packs in each battery cluster 201. The first direction X and the second direction Y intersect, for example. In one embodiment, the first direction X is perpendicular to the second direction Y.

[0043] Exemplarily, the number of battery clusters 201 is 6, the number of battery packs 202 is 8, and the 8 battery packs are respectively located on each layer of the support frame 203 along the second direction Y. The 6 battery clusters 201 are arranged along the first direction X, which greatly reduces the number of internal components of the energy storage system 100.

[0044] In an optional embodiment of the present application, the energy storage system includes a battery thermal management system, a fire protection system and a combiner cabinet 50, all of which are located in the box 10 and connected to the battery cluster.

[0045] In the related art, the thermal management system with liquid cooling components is arranged adjacent to or at intervals with the battery cluster. When the battery cluster has thermal runaway and causes a short circuit inside the battery, it is easy to affect the liquid cooling components connected to the battery cluster, and even cause the thermal runaway to spread from the battery cluster to the thermal management system, causing the liquid cooling components to fail or affecting the liquid cooling effect of the liquid cooling components, affecting the safety of the energy storage system. In addition, the battery cluster is also arranged adjacent to the junction cabinet or other structures. When the battery cluster has thermal runaway and causes a short circuit inside the battery, it is also easy to spread to the junction cabinet or other structures, posing a threat to the safety of the energy storage system.

[0046] See also Figure 4 and Figure 5 In an optional embodiment of the present application, the box 10 includes:

[0047] The partition 60 includes a first partition 601, which divides the box body 10 into a first accommodating chamber 603 and a second accommodating chamber 604. The N battery clusters 201 are arranged in the first accommodating chamber 603 along the first direction X, and the battery thermal management system, the fire protection system and the junction cabinet 50 are located in the second accommodating chamber 604.

[0048] Specifically, the first partition 601 separates the N battery clusters 201 from the battery thermal management system, the fire protection system and the junction cabinet 50 and performs a fire prevention function. When a battery cluster has thermal runaway and causes an internal short circuit in the battery, the first partition 601 reduces the impact of the thermal runaway on the liquid cooling effect of the battery thermal management system, thereby reducing the impact of the thermal runaway battery on the battery thermal management system.

[0049] Furthermore, the first accommodation chamber 603 formed by the first partition 601 and a part of the box 10 is relatively closed, and the N battery clusters 201 are located in the relatively closed first accommodation chamber 603 and separated from the battery thermal management system, thereby reducing the impact of external factors on the N battery clusters 201. Preferably, the partition 60 is made of a heat-insulating, heat-insulating and non-flammable material, such as a vacuum sandwich panel or a rock wool panel, but not limited thereto, so that the partition 60 has a heat-insulating function, reduces the impact of external extreme factors on the power of the N battery clusters 201, and improves the safety of the energy storage system.

[0050] Specifically, the thickness of the partition 60 may be, for example, 30 mm to 50 mm, and may be preferably 50 mm, depending on actual application.

[0051] In an optional embodiment of the present application, the partition 60 also includes a second partition 602 connected to the first partition 601, and the second partition 602 divides the second housing chamber 604 into a first sub-housing chamber 6041 and a second sub-housing chamber 6042. The battery thermal management system is located in the first sub-housing chamber 6041, and the fire protection system and the junction cabinet 50 are located in the second sub-housing chamber 6042.

[0052] Specifically, the first partition 601 and the second partition 602 can be arranged in a T-shape, for example, to effectively prevent the occurrence of thermal short circuit. The fire protection system and the junction cabinet 50 are arranged along the second direction, which improves the space utilization rate in the box 10. The fire protection system and the junction cabinet 50 cannot be exposed to the outside. In one embodiment, the first partition 601 and the second partition 602 separate the battery thermal management system, the fire protection system and the junction cabinet 50 in different accommodation chambers. The fire protection system and the junction cabinet 50 that cannot be exposed to the outside are located in one accommodation chamber, and the battery thermal management system is located in another accommodation chamber, reducing the impact of components in different chambers where thermal runaway occurs. When any component of the battery cluster, the fire protection system, the junction cabinet 50, and the battery thermal management system has thermal runaway or other fire safety, the first partition 601 and the second partition 602 can isolate it in the corresponding accommodation chamber, reducing the impact of thermal runaway or other fire safety on the safety of other components, ensuring the safety of the energy storage system, and reducing maintenance costs.

[0053] In one embodiment, the first partition 601 is provided with a plurality of wiring holes, and the plurality of wiring holes respectively connect the first accommodation chamber 603 with the first sub-accommodation chamber 6041 and the second sub-accommodation chamber 6042, and the wiring holes are configured to accommodate the connection harness of the fire protection system, the junction cabinet 50 and the battery thermal management system, and the connection harness is connected to the battery cluster or external parts, for example. The wiring hole is located at the bottom of the first partition 601 to reduce its influence on the function of the first partition 601.

[0054] In one embodiment, the first partition 601 is provided with locking devices at positions corresponding to the first sub-chamber 6041 and the second sub-chamber 6042, and the fire host 40 and the junction cabinet 50 are assembled with the locking devices on the side facing the first partition 601 to fix the fire host 40 and the junction cabinet 50 on the first partition 601.

[0055] See also Figure 4-Figure 6 In an optional embodiment of the present application, the energy storage system 100 includes:

[0056] A battery thermal management system is located in the box body 10, and the battery thermal management system includes a primary liquid cooling pipeline, a secondary liquid cooling pipeline, a tertiary liquid cooling pipeline and a thermal management host 30. One end of the tertiary liquid cooling pipeline is connected to the battery pack 202, and the other end is connected to the secondary liquid cooling pipeline. One end of the secondary liquid cooling pipeline away from the tertiary liquid cooling pipeline is connected to the primary liquid cooling pipeline, and one end of the primary liquid cooling pipeline away from the secondary liquid cooling pipeline is connected to the thermal management host 30.

[0057] Specifically, the battery pack 202 has an internal liquid cooling pipeline, which is in contact with the battery 204 to improve heat exchange efficiency. One end of the three-stage liquid cooling pipeline is connected to the internal liquid cooling pipeline of the battery pack 202, and the other end is connected to the secondary liquid cooling pipeline. The secondary liquid cooling pipeline is connected to the primary liquid cooling pipeline to form a liquid cooling circulation loop to dissipate heat and cool the battery pack 202.

[0058] Furthermore, there are, for example, multiple liquid cooling circuits formed by the first-level liquid cooling pipeline, the second-level liquid cooling pipeline, the third-level liquid cooling pipeline and the internal liquid cooling pipeline. For example, multiple first-level liquid cooling pipelines can be connected in parallel. Coolant flows through the liquid cooling circuits to cool the battery pack 202.

[0059] Furthermore, an inspection door is provided at a position of the box 10 corresponding to the battery thermal management system, and the opening direction of the inspection door is toward the side away from the battery cluster 201. Therefore, when a fault occurs in the battery thermal management system, the operator only needs to open the inspection door to repair the faulty battery thermal management system outside the box 10 without entering the inside of the box 10.

[0060] In an optional embodiment of the present application, the energy storage system 100 includes:

[0061] The fire protection system is located in the box 10, and the fire protection system includes multiple first-level fire protection pipelines, second-level fire protection pipelines, third-level fire protection pipelines and a fire protection host 40. One end of the third-level fire protection pipeline is connected to the battery pack 202, and the other end is connected to the second-level fire protection pipeline. One end of the second-level fire protection pipeline away from the third-level fire protection pipeline is connected to the first-level fire protection pipeline, and one end of the first-level fire protection pipeline away from the second-level fire protection pipeline is connected to the fire protection host 40.

[0062] Specifically, the battery pack 202 has an internal fire-fighting pipeline. One end of the tertiary fire-fighting pipeline is connected to the internal fire-fighting pipeline of the battery pack 202, and the other end is connected to the secondary fire-fighting pipeline. The secondary fire-fighting pipeline is connected to the primary fire-fighting pipeline to perform fire-fighting control on the battery pack 202. The pipeline is filled with fire extinguishing agent, for example. When the fire signal is triggered, the fire extinguishing agent enters the battery pack 202 through the pipeline to achieve precise fire extinguishing.

[0063] Furthermore, there are, for example, multiple fire-fighting paths formed by the primary fire-fighting pipeline, the secondary fire-fighting pipeline, the tertiary fire-fighting pipeline and the internal fire-fighting pipeline. For example, multiple primary fire-fighting pipelines can be connected in parallel to achieve fire-fighting control of multiple battery packs 202.

[0064] Exemplarily, when the number of the battery clusters 201 is 6, the number of parts of the battery thermal management system and the fire protection system can be reduced by about 40%, for example.

[0065] Furthermore, the energy storage system 100 also includes a fire backup battery 70, which is connected to the fire host 40. When an abnormality occurs in the external power supply or the internal circuit, resulting in abnormal power supply to the fire host 40, the fire backup battery 70 supplies energy to the fire host 40 to avoid fire loopholes.

[0066] Specifically, the fire backup battery 70 is located on the same side as the fire protection system, which improves space utilization and reduces the complexity of the system process.

[0067] Furthermore, an inspection door is provided at the position of the box 10 corresponding to the fire protection system, and the opening direction of the inspection door is toward the side away from the battery cluster 201. Therefore, when a fire protection system fails, the operator only needs to open the inspection door to repair the failed fire protection system outside the box 10 without entering the inside of the box 10.

[0068] In an optional embodiment of the present application, the fire protection system further includes: a plurality of fire detectors, which are arranged on the support frame 203 and connected to the fire protection host 40 .

[0069] Specifically, the number of the support frames 203 is N, and the number of the fire detectors is also N, which are arranged on the support frames 203 of each battery cluster 201, and respectively perform fire detection on each battery cluster 201. The fire detector of an embodiment of the present application is, for example, a composite fire detector, which can detect parameters such as the temperature, ambient temperature, and smoke concentration of the battery cluster 201 in the box 10. When it is detected that the above parameters exceed a predetermined value, the fire protection system is triggered, and the fire extinguishing agent flows into the corresponding battery pack 202 according to the fire detector at the corresponding position, and the battery pack 202 is extinguished.

[0070] In an optional embodiment of the present application, the energy storage system 100 includes:

[0071] The combiner cabinet 50 is located in the box body 10 , and the N battery clusters 201 are connected to the combiner cabinet 50 .

[0072] Specifically, the junction cabinet 50 is electrically connected to the battery cluster 201. The junction cabinet 50 is provided with a main switch of the battery cluster 201. At the same time, the junction cabinet 50 includes a controller, and the communication connection between the controller and the battery thermal management system, the fire protection system, etc., and the manual operation panel and information display of the battery thermal management system and the fire protection system are also arranged in the junction cabinet 50. In most cases, the operator only needs to open the junction cabinet 50 to judge the operation status of the energy storage system, and can control the power supply status of the entire energy storage system through the main switch of the battery cluster 201. Specifically, the energy storage system is also connected to the external circuit through the junction cabinet 50. In order to be able to individually shut down the corresponding battery cluster 201 when a battery pack 202 fails, each battery cluster 201 is provided with an independent sub-switch.

[0073] Furthermore, an inspection door is provided at the position of the box 10 corresponding to the combiner cabinet 50 for easy inspection. The opening direction of the inspection door is toward the side away from the battery cluster 201. Therefore, when a failure occurs in the combiner cabinet 50, the operator only needs to open the inspection door to repair the failed combiner cabinet 50 outside the box 10 without entering the box 10.

[0074] Furthermore, the battery thermal management system, the fire protection system and the combiner cabinet 50 are all located on the same side of the box body 10, but not limited thereto.

[0075] In an optional embodiment of the present application, the battery thermal management system, the fire protection system and the combiner cabinet 50 are located in an extension direction of the N battery clusters 201 in the first direction X.

[0076] Specifically, the battery thermal management system, the fire protection system and the combiner cabinet 50 are located on the same side of the box body 10 , which improves space utilization and facilitates maintenance.

[0077] In an optional embodiment of the present application, the energy storage system 100 includes: a battery management system, which is located in the box 10 and is respectively connected to a plurality of battery packs 202 .

[0078] Specifically, the battery management system may be located in the battery pack 202 , for example, and is responsible for collecting and monitoring data such as the temperature and voltage of the battery pack 202 , and controlling the battery pack 202 .

[0079] The energy storage system provided in the present application includes at least the following working process or principle: the energy storage system includes a box 10 and an energy storage device 20, the energy storage device 20 is arranged in the box 10, the energy storage device 20 includes N battery clusters 201, and the battery cluster 201 includes M interconnected battery packs 202, wherein 4≤N≤6, 5≤M≤8. It can reduce the number of internal components and improve the space utilization of the box 10. The box 10 uses an industry standard container (for example: a 20-foot container) to facilitate road transportation and reduce transportation costs. The battery capacity of the battery 204 is 628Ah-942Ah. Based on this battery capacity, only 4-6 battery clusters are required, and each battery cluster has 5-8 battery packs to achieve a power of more than 5MWh, which greatly improves the overall energy density of the energy storage system.

[0080] In summary, although the present application has been disclosed as above with preferred embodiments, the above preferred embodiments are not intended to limit the present application. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined in the claims.

Claims

1. An energy storage system, characterized in that: include: Box; and An energy storage device is disposed in the box, the energy storage device includes N battery clusters arranged along a first direction, the battery cluster includes M battery packs interconnected in a second direction perpendicular to the first direction, wherein 4≤N≤6, 5≤M≤8.

2. The energy storage system according to claim 1, characterized in that: Each of the battery packs includes Q interconnected batteries, wherein 52≤Q≤78, and the battery capacity of the batteries is 628Ah-942Ah.

3. The energy storage system according to claim 1, characterized in that: The energy storage system further includes a plurality of support frames arranged along the first direction, one of the support frames includes a plurality of receiving cavities, and the battery packs of the same battery cluster are received in the receiving cavities.

4. The energy storage system according to claim 1, characterized in that: The energy storage system includes a battery thermal management system, a fire protection system and a junction box, all of which are located in the box and connected to the battery cluster.

5. The energy storage system according to claim 4, characterized in that: The box body comprises: The partition includes a first partition, which divides the box into a first accommodating chamber and a second accommodating chamber, the N battery clusters are arranged in the first accommodating chamber along the first direction, and the battery thermal management system, the fire protection system and the junction cabinet are located in the second accommodating chamber.

6. The energy storage system according to claim 5, characterized in that: The partition also includes a second partition connected to the first partition, the second partition divides the second housing chamber into a first sub-housing chamber and a second sub-housing chamber, the battery thermal management system is located in the first sub-housing chamber, and the fire protection system and the junction cabinet are located in the second sub-housing chamber.

7. The energy storage system according to claim 6, characterized in that: The first partition plate is provided with a plurality of wiring holes, and the plurality of wiring holes respectively connect the first accommodating chamber with the first sub-accommodating chamber and the second sub-accommodating chamber.

8. The energy storage system according to any one of claims 4 to 7, characterized in that: The battery thermal management system includes a primary liquid cooling pipeline, a secondary liquid cooling pipeline, a tertiary liquid cooling pipeline and a thermal management host. One end of the tertiary liquid cooling pipeline is connected to the battery pack, and the other end is connected to the secondary liquid cooling pipeline. One end of the secondary liquid cooling pipeline away from the tertiary liquid cooling pipeline is connected to the primary liquid cooling pipeline, and one end of the primary liquid cooling pipeline away from the secondary liquid cooling pipeline is connected to the thermal management host.

9. The energy storage system according to any one of claims 4 to 7, characterized in that: The fire protection system includes multiple first-level fire protection pipelines, second-level fire protection pipelines, third-level fire protection pipelines and a fire protection host. One end of the third-level fire protection pipeline is connected to the battery pack, and the other end is connected to the second-level fire protection pipeline. One end of the second-level fire protection pipeline away from the third-level fire protection pipeline is connected to the first-level fire protection pipeline, and one end of the first-level fire protection pipeline away from the second-level fire protection pipeline is connected to the fire protection host.

10. The energy storage system according to any one of claims 4 to 7, characterized in that: The combiner cabinet is connected to the N battery clusters; The battery thermal management system, the fire protection system and the combiner cabinet are located in an extension direction of the N battery clusters in the first direction.

Images