Energy storage container

Abstract

An energy storage container (1), comprising: a container body (10), and a top cover (11) and a bottom cover (12), which are arranged opposite each other, wherein the container body (10) is provided with a battery compartment (14), and the top cover (11) and the bottom cover (12) respectively surround the top and bottom of the battery compartment (14); a plurality of battery clusters (20), which are placed in the battery compartment (14); and a fire-fighting system (30), which comprises a plurality of fire-fighting devices (31), wherein the plurality of fire-fighting devices (31) are evenly distributed between the plurality of battery clusters (20) and the top cover (11).

Description

Energy storage container

[0001] The present application claims priority to the Chinese patent application No. 202421452743.8, filed on June 24, 2024, to the Chinese Patent Office, the whole content of the above application being incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of energy storage equipment, in particular to an energy storage container. BACKGROUND

[0003] The energy storage container is usually configured as a box structure of a certain size, and the 20-foot 5MWH liquid-cooled energy storage container is currently the liquid-cooled energy storage system with the highest volume-to-energy ratio. In the limited space of the energy storage container, PACK (battery module), PDU (high-voltage box), fire extinguishing system, liquid cooling system, busbar cabinet and complex wiring harness need to be placed. All the above components are integrated into the 20-foot container, and the length, width and height of the container often exceed the standard size. SUMMARY

[0004] In the related art, the fire extinguishing system adopts a traditional large fire extinguishing device, and the length, width and height of the large fire extinguishing device are usually set to 340mm*330mm*1350mm. Therefore, an independent equipment compartment for placing the large fire extinguishing device needs to be arranged inside the box, and the equipment compartment is located on one side of the battery compartment. The large fire extinguishing device is vertically placed in the energy storage container, which causes a large space to be reserved in the length direction of the container for arranging the equipment compartment, and further causes difficulty in optimizing the space inside the energy storage container.

[0005] Embodiments of the present application provide an energy storage container, which comprises:

[0006] A box body comprising oppositely arranged top and bottom covers, the box body is provided with a battery compartment, and the top and bottom covers surround the top and bottom of the battery compartment, respectively;

[0007] A plurality of battery clusters placed in the battery compartment, each battery cluster comprising a plurality of battery modules;

[0008] A fire extinguishing system comprising a plurality of fire extinguishing devices, the plurality of fire extinguishing devices are uniformly and dispersedly arranged between the plurality of battery clusters and the top cover. ADVANTAGEOUS EFFECTS

[0009] The energy storage container provided by the application sets multiple fire-fighting devices, so that the size of each fire-fighting device can be designed to be small, and the multiple fire-fighting devices can be arranged in the space between the top of the battery module and the top cover, so that the space in the height direction of the container can be fully utilized. Further, since the multiple fire-fighting devices can be arranged in the space between the top of the battery module and the top cover, a separate equipment room for placing the fire-fighting devices is not needed on one side of the battery compartment, thereby improving the space utilization rate in the length direction of the energy storage container. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 is a perspective view of an energy storage container according to an embodiment of the application;

[0011] Fig. 2 is an internal structure arrangement view of the energy storage container according to an embodiment of the application from one angle;

[0012] Fig. 3 is a perspective view of a fire-fighting device mounted on a top cover according to an embodiment of the application;

[0013] Fig. 4 is a top structure arrangement view of the energy storage container according to an embodiment of the application;

[0014] Fig. 5 is an arrangement view of a fire-fighting system according to an embodiment of the application;

[0015] Fig. 6 is a front view of a fire-fighting device according to an embodiment of the application;

[0016] Fig. 7 is a bottom view of the fire-fighting device according to an embodiment of the application;

[0017] Fig. 8 is an internal structure view of a box according to an embodiment of the application;

[0018] Reference Signs:

[0019] 1, energy storage container; 10, box; 11, top cover; 12, bottom cover; 13, side plate; 14, battery compartment; 15, liquid cooling compartment; 16, electrical compartment; 17, busbar cabinet; 18, power distribution cabinet; 20, battery cluster; 21, battery module; 30, fire-fighting system; 31, fire-fighting device; 311, fire-fighting device row; 32, fire-fighting box; 33, fire-fighting detector; 331, smoke detector; 332, temperature detector; 333, combustible gas detector; 34, fire-fighting pipeline; 35, fire-fighting fan; 40, liquid cooling pipeline; 41, primary pipeline; 411, water inlet pipe; 412, water return pipe; 42, secondary pipeline; 43, tertiary pipeline; 50, dehumidifier; Embodiments of the application

[0020] The energy storage container is usually configured as a box structure of a certain size, and the 20-foot 5MWH liquid-cooled energy storage container is currently the liquid-cooled energy storage system with the highest volume-to-energy ratio. In the limited space of the energy storage container, a plurality of PACKs (battery modules), PDU (high-voltage box), fire extinguishing system, liquid cooling system, busbar cabinet and complex wiring harness need to be placed. To integrate all the above components into the 20-foot container, the length, width and height of the container often exceed the standard size. In the related technology, the fire extinguishing system adopts a traditional perfluorohexone large fire extinguishing device, and the length, width and height of the large fire extinguishing device are usually set to 340mm*330mm*1350mm. Therefore, an independent equipment compartment for placing the large fire extinguishing device needs to be arranged inside the box. The equipment compartment is located on one side of the battery compartment, and the large fire extinguishing device is placed in the energy storage container, which causes a large space to be reserved in the length direction of the container for the equipment compartment, further causing difficulty in optimizing the space inside the energy storage container.

[0021] Embodiments of the present application provide an energy storage container 1. By optimizing the structure of the fire extinguishing system 30 arranged inside the energy storage container 1, the effective space inside the energy storage container 1 can be arranged with a plurality of battery modules 21, a fire extinguishing system 30, a liquid cooling system and electrical equipment, as shown in FIGS. 1-5. The energy storage container 1 comprises:

[0022] a box 10 comprising a top cover 11 and a bottom cover 12 arranged oppositely, and the inside of the box 10 is provided with a battery compartment 14, and the top cover 11 and the bottom cover 12 surround the top and bottom of the battery compartment 14, respectively;

[0023] a plurality of battery clusters 20 arranged in the battery compartment 14, and each battery cluster 20 comprises a plurality of battery modules 21;

[0024] a fire extinguishing system 30 comprising a plurality of fire extinguishing devices 31, and the plurality of fire extinguishing devices 31 are arranged between the plurality of battery clusters 20 and the top cover 11.

[0025] By arranging a plurality of fire extinguishing devices 31, the size of each fire extinguishing device 31 can be designed to be small, so that the plurality of fire extinguishing devices 31 can be arranged between the top of the battery module 21 and the top cover 11, thereby fully utilizing the space in the height direction of the container.

[0026] Further, since the plurality of fire extinguishing devices 31 can be arranged in the interval space between the top of the battery module 21 and the top cover 11, an independent equipment compartment for placing the fire extinguishing device 31 is not needed on one side of the battery compartment 14, thereby facilitating the improvement of the space utilization rate in the length direction of the energy storage container 1.

[0027] In a specific implementation, the box 10 includes a top cover 11, a bottom cover 12, and a plurality of side plates 13 connected between the top cover 11 and the bottom cover 12, the plurality of side plates 13 including a left side plate, a right side plate, a front side plate, and a rear side plate, wherein the left side plate and the right side plate are oppositely arranged, and the front side plate and the rear side plate are oppositely arranged, the box 10 including a length direction, a width direction, and a height direction perpendicular to each other, the length of the box 10 being arranged as a distance extending along the length direction of the box 10, the length of the box 10 being arranged as a distance between the left side plate and the right side plate, the width of the box 10 being arranged as a width extending along the width direction of the box 10, the width of the box 10 being arranged as a distance between the front side plate and the rear side plate, and the height of the box 10 being arranged as a distance extending along the height direction of the box 10, the height of the box 10 being arranged as a distance between the top cover 11 and the bottom cover 12.

[0028] As shown in FIGS. 2 and 3, the energy storage container 1 includes a plurality of battery clusters 20, the battery clusters 20 being configured by combining a plurality of battery modules 21, and each of the fire extinguishing devices 31 being arranged corresponding to at least one of the battery clusters 20.

[0029] The battery cluster 20 is configured by a plurality of battery modules 21 arranged in a stacking manner along the height direction of the energy storage container 1, and the plurality of battery modules 21 are connected in series, in parallel, or in a mixed manner to form a battery cluster 20 with a certain voltage and capacity, thereby meeting the capacity design requirements of the energy storage container 1.

[0030] The plurality of battery clusters 20 are placed inside the battery compartment 14, and the plurality of fire extinguishing devices 31 arranged above the battery compartment 14 are beneficial to improve the overall fire extinguishing capability of the fire extinguishing system 30. When a fire risk occurs in a certain battery cluster 20, the plurality of fire extinguishing devices 31 can be controlled to start fire extinguishing simultaneously, and the position arrangement of the plurality of fire extinguishing devices 31 is more dispersed than that of a single large fire extinguishing device 31, thereby improving the overall fire extinguishing efficiency of the fire extinguishing system 30.

[0031] Further, each battery cluster 20 is configured with an independent fire extinguishing device 31, and when a fire risk occurs in a certain battery cluster 20, the fire extinguishing device 31 arranged corresponding to the battery cluster 20 can quickly start fire extinguishing operation, thereby avoiding the fire caused by the certain battery cluster 20 from spreading to the battery clusters 20 around the certain battery cluster 20, and controlling the loss of the fire in the minimum range.

[0032] In the embodiments of the present application, by optimizing the structure inside the box 10, the length of the box 10 is set to 6200 mm, the width of the box 10 is set to 2550 mm, and the height of the box 10 is set to 2896 mm. Compared with the related art, in which the size of the box 10 of the 20-foot 5MWH liquid-cooled energy storage container 1 is usually set to 6250 mm (length) * 2550 mm (width) * 3100 mm (height), the length and the height of the box 10 of the energy storage container 1 provided in the embodiments of the present application are significantly reduced.

[0033] Further referring to FIGS. 2 and 3, the plurality of fire-fighting devices 31 are installed on the top cover 11, and the fire-fighting devices 31 include fire-fighting bottles, which are installed horizontally on the top cover 11.

[0034] In specific implementation, the plurality of fire-fighting devices 31 are fixed to the top cover 11 by means of supports.

[0035] It can be understood that the fire-fighting devices 31 are usually provided in a barrel shape, and the fire-fighting devices 31 include mutually perpendicular length, width and height directions, the length of the fire-fighting devices 31 is set to the length extending along the length direction, the width of the fire-fighting devices 31 is set to the width extending along the width direction, and the height of the fire-fighting devices 31 is set to the height extending along the height direction. By miniaturizing the size of a single fire-fighting device 31 and setting the height of the single fire-fighting device 31 to be greater than the length or the width thereof, and by horizontally placing the plurality of fire-fighting devices 31 in the space between the top of the battery module 21 and the top cover 11, the length direction or the width direction of the fire-fighting devices 31 coincides with the height direction of the box 10, so that the space of the fire-fighting devices 31 in the height direction of the box 10 can be significantly reduced.

[0036] The energy storage container 1 further includes a battery rack provided inside the box 10, the battery rack includes layers and columns, the layers are fixed to the columns, and at least one battery module 21 is fixed between adjacent two layers.

[0037] In further preferred implementation, the energy storage container 1 is provided as a 20-foot 5MWH liquid-cooled energy storage container, the number of the battery clusters 20 provided in the box 10 is 10-12, and the number of the fire-fighting devices 31 provided in the box 10 is 10-12.

[0038] In one of the examples, as shown in FIGS. 1 and 2, 12 battery clusters 20 are arranged in the box 10, 6 battery clusters 20 are arranged side by side along the length direction of the energy storage container 1, and every two battery clusters 20 are arranged side by side along the width direction of the energy storage container 1. Each battery cluster 20 includes 8 battery modules 21 stacked along the height direction of the box 10. Correspondingly, one fire extinguishing device 31 is arranged at the top of each battery cluster 20, and 12 fire extinguishing devices 31 are arranged in the energy storage container 1.

[0039] It can be understood that the number of battery clusters 20 can also be 10 or 11, and the number of fire extinguishing devices 31 can be 10 or 11, wherein the number of fire extinguishing devices 31 is less than or equal to the number of battery clusters 20.

[0040] Further, taking a 20-foot 5MWH liquid-cooled container as an example, the inventors further analyzed the fire extinguishing capacity of the fire extinguishing device 31 and the fire regulations required to be met by the energy storage container 1, and found that the ratio of the number of fire extinguishing devices 31 installed in the box 10 to the number of battery clusters 20 is not less than 1 / 2, wherein the mass of the fire extinguishing gas that each fire extinguishing device 31 can spray is 2kg~3kg. When the ratio of the number of fire extinguishing devices 31 installed in the box 10 to the number of battery clusters 20 is less than 1 / 2, the energy storage container 1 cannot meet the requirements of the fire regulations. In the case where the internal space of the box 10 allows, as many fire extinguishing devices 31 as possible can be arranged in the box 10 to sufficiently improve the fire extinguishing performance of the energy storage container 1, and therefore, the upper limit of the ratio of the number of fire extinguishing devices 31 to the number of battery clusters 20 is not specifically limited.

[0041] According to the fire extinguishing regulations required to be met by the energy storage container 1, the group standard T / CECS 10171-2022 "Prefabricated Perfluorohexone Fire Extinguishing Device" requires that the fire extinguishing time be tested according to the method specified in XF 499.1-2010 7.11, 7.12 for B-type n-heptane fire, and the minimum volume ratio of the concentration of the flammable gas-n-heptane in the experiment is 5.9%. The fire extinguishing device should extinguish the open fire within 30s after the spraying ends, and there should be no rekindling within 1min.

[0042] According to the test method specified in the above fire extinguishing regulations, it is found that in a 20-foot 5MWH liquid-cooled container, 12 battery clusters 20 are arranged in the box 10, and each battery cluster 20 is correspondingly provided with one fire extinguishing device 31. The mass of the fire extinguishing gas that each fire extinguishing device 31 can spray is 2.6kg, the concentration of the flammable gas-n-heptane in the B-type n-heptane fire is 12.61% by volume, and the time required for 12 fire extinguishing devices 31 to extinguish the fire is 12s, which can meet the requirements of the regulations.

[0043] As shown in FIG. 6 and FIG. 7, each fire-fighting device 31 includes a length, a width, and a height, each of which satisfies any one or at least two of the following conditions: the length of each fire-fighting device 31 is set to a range of 50mm~200mm; the width of each fire-fighting device 31 is set to a range of 50mm~200mm; and the height of each fire-fighting device 31 is set to a range of 200mm~500mm. Compared with the size of the large fire-fighting device 31 in the related art, the size of the single fire-fighting device 31 is significantly reduced, thereby facilitating the uniform arrangement of the plurality of fire-fighting devices 31 in the space between the top of the plurality of battery clusters 20 and the top cover 11.

[0044] Among the plurality of fire-fighting devices 31, some of the fire-fighting devices 31 can be configured to the same size and specification, and some of the fire-fighting devices 31 can be configured to different sizes and specifications according to the arrangement positions of the fire-fighting devices 31. For example, in one example, the length* width* height of each fire-fighting device 31 is set to 112mm*112mm*376mm, and the fire-fighting device 31 is placed horizontally inside the box 10, so that the height space occupied by the fire-fighting device 31 in the height direction of the energy storage container 1 is only 112mm, which can significantly reduce the space occupied by the fire-fighting device 31 in the height direction of the box 10.

[0045] The length L or the width W of each fire-fighting device 31 can be set to 50mm, 70mm, 90mm, 110mm, 130mm, 150mm, 170mm, 190mm, a value between any two of the above values, or a range between any two of the above values. The height h of each fire-fighting device 31 can be set to 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, a value between any two of the above values, or a range between any two of the above values.

[0046] Taking the 20-foot 5MWH liquid-cooled energy storage container 1 as an example, the length of the box body 10 is set to 6200 mm, the width of the box body 10 is set to 2550 mm, and the height of the box body 10 is set to 2896 mm. Twelve battery clusters 20 are arranged inside the box body 10, wherein every six battery clusters 20 are arranged along the length direction of the box body 10, each battery cluster 20 includes eight battery modules 21 arranged in the height direction of the box body 10, and every two battery clusters 20 are arranged along the width direction of the box body 10. A fire-fighting device 31 is arranged between the top of each battery cluster 20 and the top cover 11. If the length or width dimension of a single fire-fighting device 31 is set to be greater than 200 mm, and multiple fire-fighting devices 31 are arranged horizontally inside the box body 10, the fire-fighting device 31 will occupy more height space inside the box body 10, which will result in that eight battery modules 21 cannot be placed in the height direction of the box body 10, and further affect the capacity of the energy storage container 1. If the length or width dimension of a single fire-fighting device 31 is set to be less than 50 mm, the capacity of a single fire-fighting device 31 will be insufficient, which will further result in that the overall fire extinguishing capacity of the fire-fighting device 31 is insufficient. Further, if the height of a single fire-fighting device 31 is set to be greater than 500 mm, the height of the fire-fighting device 31 will exceed the width of a single battery cluster 20, and other electrical components cannot be further placed on the top of the battery cluster 20, which will affect the normal structure design of the energy storage container 1. If the height of a single fire-fighting device 31 is set to be less than 200 mm, the capacity of a single fire-fighting device 31 will be insufficient, which will further result in that the overall fire extinguishing capacity of the fire-fighting device 31 is insufficient.

[0047] With reference to FIGS. 3 and 4, each of the fire-fighting devices 31 is arranged corresponding to at least one of the battery clusters 20, and the multiple fire-fighting devices 31 form at least two fire-fighting device rows 311.

[0048] It should be noted that the number of the fire-fighting device rows 311 corresponds to the number of the battery clusters 20 arranged along the width direction of the box body 10. For example, when two rows of battery clusters 20 are arranged along the width direction of the box body 10, two fire-fighting device rows 311 are formed in the box body 10. When three, four or five rows of battery clusters 20 are arranged along the width direction of the box body 10, three, four or five fire-fighting device rows 311 are formed in the box body 10.

[0049] By arranging the multiple fire-fighting devices 31 as fire-fighting device rows 311, the fire-fighting devices 31 can be evenly and uniformly arranged on the top cover 11.

[0050] Referring to FIG. 5, the fire-fighting system 30 further comprises a fire-fighting box 32 installed on the box body 10 and protruding out of the box body 10, the fire-fighting box 32 is integrated with at least two of a fire-fighting controller, a manual fire alarm switch and a fire-fighting emergency stop switch, and the fire-fighting box 32 is electrically connected with the plurality of fire-fighting devices 31 to control whether the plurality of fire-fighting devices 31 are opened.

[0051] By integrating the fire-fighting controller, the manual fire alarm switch and the fire-fighting emergency stop switch on the fire-fighting box 32, it is convenient to install and arrange the connection harnesses, thereby being conducive to fully saving the internal space of the energy storage container 1.

[0052] Further, by installing the fire-fighting box 32 on the box body 10 and protruding out of the box body 10, the space occupied by the fire-fighting box 32 in the interior of the box body 10 is minimized.

[0053] Further referring to FIGS. 4 and 5, the fire-fighting system 30 further comprises a plurality of fire-fighting detectors 33, the fire-fighting box 32 is electrically connected with the plurality of fire-fighting detectors 33 to control whether the plurality of fire-fighting devices 31 are opened according to the detection results of the plurality of fire-fighting detectors 33, wherein the plurality of fire-fighting detectors 33 comprise a plurality of smoke detectors 331, a plurality of temperature detectors 332 and a combustible gas detector 333, the plurality of smoke detectors 331 and the plurality of temperature detectors 332 are arranged at intervals on the outer sides of at least two fire-fighting device rows 311, and the combustible gas detector 333 is arranged between adjacent two fire-fighting devices 31 of the same fire-fighting device row 311.

[0054] The plurality of fire-fighting detectors 33 are connected to the fire-fighting box 32, and by installing the temperature detectors 332 and the smoke detectors 331 in the interior of the energy storage container 1, it is conducive to monitoring the temperature and smoke conditions in the interior of the energy storage container 1, and once a fire risk is detected, the fire-fighting box 32 can timely send an alarm signal.

[0055] Further, by arranging the plurality of fire-fighting detectors 33 at intervals on the outer sides of the plurality of fire-fighting devices 31, on the one hand, it is conducive to centrally arranging the plurality of fire-fighting detectors 33 and fully utilizing the top space between the battery module 21 and the top cover 11, and on the other hand, it is conducive to centrally arranging the connection harnesses and facilitating installation.

[0056] Continuing to refer to FIGS. 4 and 5, the fire-fighting system 30 further comprises a fire-fighting pipeline 34, one end of the fire-fighting pipeline 34 is used to connect a fire-fighting source, and the other end of the fire-fighting pipeline 34 is located between adjacent two fire-fighting device rows 311.

[0057] The inlet end of the fire-fighting pipeline 34 extends to the outside of the energy storage container 1, and the outlet end of the fire-fighting pipeline 34 extends between the plurality of fire-fighting device rows 311. When an alarm signal is received from the outside, water is injected into the inlet end of the fire-fighting pipeline 34, and the water is sprayed out of the outlet end of the fire-fighting pipeline 34, directly spraying onto the top of the plurality of battery clusters 20, so that the fire can be quickly and effectively extinguished.

[0058] As shown in FIGS. 2 and 5, the box 10 includes a plurality of side plates 13 connected between the top cover 11 and the bottom cover 12, which surround the sides of the battery compartment 14. The plurality of side plates 13 are provided with a plurality of mounting openings. The fire-fighting system 30 further includes a plurality of fire-fighting fans 35, each of which is mounted in each of the mounting openings, and the fire-fighting fans 35 do not protrude from the inner surface of the side plates 13, thereby further reducing the space occupied by the fire-fighting fans 35 inside the box 10.

[0059] Further referring to FIGS. 1 and 8, the inside of the box 10 is further provided with a liquid cooling compartment 15, which is arranged separately from the battery compartment 14 along the length direction of the box 10. The liquid cooling compartment 15 is used to place liquid cooling equipment, and the thickness of the liquid cooling equipment is not greater than 500 mm.

[0060] By separating the liquid cooling compartment 15 and the battery compartment 14 along the length direction of the box 10 and controlling the thickness of the liquid cooling equipment to be not greater than 500 mm, the space in the length direction of the box 10 can be fully utilized.

[0061] Continuing to refer to FIGS. 1 and 8, the inside of the box 10 is further provided with an electrical compartment 16, which is arranged separately from the liquid cooling compartment 15 along the width direction of the box 10. The electrical compartment 16 is used to place a busbar cabinet 17 and a power distribution cabinet 18. The busbar cabinet 17 and the power distribution cabinet 18 are integrally arranged, and the thickness of any one or both of the busbar cabinet 17 and the power distribution cabinet 18 is not greater than 500 mm.

[0062] By separating the electrical compartment 16, the liquid cooling compartment 15, and the battery compartment 14, the electrical compartment 16, the liquid cooling compartment 15, and the battery compartment 14 can be independently controlled in temperature and humidity. On the one hand, this is conducive to maintaining the electrical equipment such as the busbar cabinet 17 and the power distribution cabinet 18 in the electrical compartment 16 in a suitable working environment, thereby improving the stability and reliability of the electrical equipment such as the busbar cabinet 17 and the power distribution cabinet 18. On the other hand, independent temperature and humidity control of the battery compartment 14 can control the working environment of the battery module 21, thereby prolonging the service life of the battery module 21.

[0063] Further, by integrating the busbar cabinet 17 and the distribution cabinet 18, the design space of the electrical compartment 16 can be minimized.

[0064] In a further preferred embodiment, either one or both of the busbar cabinet 17 and the distribution cabinet 18 are designed to be extremely narrow, for example, in a 20-foot 5MWH liquid-cooled energy storage container 1, the thickness of the busbar cabinet 17 and the distribution cabinet 18 is set to be not more than 500mm, so as to make full use of the length direction space of the container.

[0065] A partition plate is arranged inside the energy storage container 1, which is used to separate the battery compartment 14, the liquid cooling compartment 15 and the electrical compartment 16. By separating the battery compartment 14 from the electrical compartment 16 or the liquid cooling compartment 15 along the length direction of the energy storage container 1, and separating the electrical compartment 16 and the liquid cooling compartment 15 along the width direction of the energy storage container 1, the space of the battery compartment 14 can be further improved, so as to arrange a sufficient number of battery modules 21 in a limited space, and improve the space utilization of the energy storage container 1.

[0066] As shown in FIG. 1 and FIG. 4, a plurality of battery clusters 20 are connected to a plurality of liquid cooling plates, and a plurality of liquid cooling pipes 40 are arranged in the energy storage container 1. The plurality of liquid cooling pipes 40 include a primary pipe 41, a plurality of secondary pipes 42 and a plurality of tertiary pipes 43. The primary pipe 41 is connected to the plurality of liquid cooling plates through the plurality of secondary pipes 42 and the plurality of tertiary pipes 43. The primary pipe 41 includes a water inlet pipe 411 and a water return pipe 412. The water return pipe 412 is located between the plurality of battery modules 21 and the at least two fire-fighting device rows 311, and is located outside the at least two fire-fighting device rows 311.

[0067] The plurality of secondary pipes 42 are arranged to be branched from the primary pipe 41, and the plurality of tertiary pipes 43 are arranged to be branched from the secondary pipes 42. Each of the secondary pipes 42 is configured as a single pipe structure.

[0068] The primary pipe 41 includes a top water return pipe 412 located between the plurality of battery modules 21 and the at least two fire-fighting device rows 311, and a bottom water inlet pipe 411 arranged close to the bottom cover 12. The secondary pipes 42 are arranged as secondary liquid cooling pipes extending between the water inlet pipe 411 and the water return pipe 412. The plurality of secondary pipes 42 are arranged in parallel between the water inlet pipe 411 and the water return pipe 412. Each of the secondary pipes 42 is arranged to correspond to a single battery cluster 20. By arranging the secondary pipes 42 as single pipe structures, compared with the related art in which the secondary pipes 42 are usually arranged as two-stage pipe structures or multi-pipe structures, the single pipe structure of the secondary pipes 42 can shorten the column size of the battery rack, thereby saving the length space of the energy storage container 1.

[0069] Further, the backwater pipe 412 is arranged between the battery module 21 and the at least two fire-fighting device rows 311 and outside the at least two fire-fighting device rows 311, so as to make full use of the space in the height direction of the box 10.

[0070] Further, referring to FIG. 2, the energy storage container 1 further comprises a plurality of dehumidifiers 50, which are horizontally distributed in the space between the bottom of the battery module 21 and the bottom cover 12.

[0071] In the related art, the dehumidifiers 50 are installed on the side plates, so that installation space of the dehumidifiers 50 needs to be reserved along the length direction of the box 10. In the embodiment of the present application, the dehumidifiers 50 are designed to be small in size, and a plurality of dehumidifiers 50 are dispersedly arranged in the space between the bottom of the battery module 21 and the bottom cover 12, and the plurality of dehumidifiers 50 are horizontally arranged inside the box 10, thereby effectively improving the space in the height direction of the box 10 required for arranging the dehumidifiers 50, and further improving the space utilization of the energy storage container 1.

Claims

1. An energy storage container (1), comprising: The housing (10) includes a top cover (11) and a bottom cover (12) disposed opposite to each other. The housing (10) is provided with a battery compartment (14). The top cover (11) and the bottom cover (12) surround the top and bottom of the battery compartment (14) respectively. Multiple battery clusters (20) are placed in the battery compartment (14), and each battery cluster (20) includes multiple battery modules (21). The fire protection system (30) includes multiple fire protection devices (31), which are evenly distributed between the multiple battery clusters (20) and the top cover (11).

2. The energy storage container (1) according to claim 1, wherein, The fire-fighting device (31) includes a fire-fighting bottle, which is installed horizontally on the top cover (11).

3. The energy storage container (1) according to claim 2, wherein, The ratio of the number of fire-fighting devices (31) in the housing (10) to the number of battery clusters (20) is greater than 1 / 2, and the mass of fire-fighting gas that each fire-fighting device (31) can spray is 2kg~3kg.

4. The energy storage container (1) according to claim 2, wherein, The fire-fighting device (31) satisfies any one or more of the following conditions: The length of the fire-fighting device (31) is set to 50mm~200mm; The width of the fire-fighting device (31) is set to 50mm~200mm; The height of the fire-fighting device (31) is set to 200mm~500mm.

5. The energy storage container (1) according to claim 1, wherein, Each of the fire-fighting devices (31) is provided corresponding to at least one of the battery clusters (20), and the plurality of fire-fighting devices (31) form at least two fire-fighting device rows (311).

6. The energy storage container (1) according to claim 5, wherein, The fire protection system (30) also includes a fire box (32), which is installed on the enclosure (10) and protrudes from the enclosure (10). The fire box (32) integrates a fire controller, a manual fire alarm switch and a fire emergency stop switch. The fire box (32) is electrically connected to the plurality of fire protection devices (31) to control the opening and closing of the plurality of fire protection devices (31).

7. The energy storage container (1) according to claim 6, wherein, The fire protection system (30) also includes multiple fire detectors (33). The fire box (32) is electrically connected to the multiple fire detectors (33) to control the opening and closing of the multiple fire devices (31) according to the detection results of the multiple fire detectors (33). The multiple fire detectors (33) include multiple smoke detectors (331), multiple heat detectors (332) and combustible gas detectors (333). The multiple smoke detectors (331) and the multiple heat detectors (332) are spaced apart on the outside of at least two rows of fire devices. The combustible gas detectors are located between two adjacent fire devices (31) in the same row of fire devices (311).

8. The energy storage container (1) according to claim 5, wherein, The fire protection system (30) also includes a fire pipe (34), one end of which is configured to connect to a fire source, and the other end of which is located between two adjacent fire protection device rows (311).

9. The energy storage container according to claim 1, wherein, The housing (10) includes a plurality of side panels (13) connected between the top cover (11) and the bottom cover (12), the plurality of side panels (13) surrounding the side of the battery compartment (14), and the fire protection system (30) also includes a plurality of fire fans (35), the fire fans (35) being mounted on the side panels (13), and the fire fans (35) not protruding from the inner surface of the side panels (13).

10. The energy storage container (1) according to claim 5, wherein, The housing (10) is also provided with a liquid cooling chamber (15). The liquid cooling chamber (15) and the battery compartment (14) are arranged along the length of the housing (10) and separated from each other. The liquid cooling chamber (15) is used to place liquid cooling equipment. The interior of the enclosure (10) is also provided with an electrical compartment (16). The electrical compartment (16) and the liquid cooling compartment (15) are arranged along the width direction of the enclosure (10) and separated from each other. The electrical compartment (16) is configured to house any one or both of the combiner cabinet (17) and the distribution cabinet (18).

11. The energy storage container (1) according to claim 10, wherein, The combiner cabinet (17) and the distribution cabinet (18) are integrated, and the thickness of the combiner cabinet (17) and the distribution cabinet (18) is no more than 500mm.

12. The energy storage container (1) according to claim 10, wherein, Multiple battery clusters (20) are connected to multiple liquid cooling plates. Multiple liquid cooling pipes (40) are provided inside the energy storage container. The multiple liquid cooling pipes (40) include a primary pipe (41), multiple secondary pipes (42), and multiple tertiary pipes (43). The primary pipe (41) is connected to the multiple liquid cooling plates through multiple secondary pipes (42) and multiple tertiary pipes (43). The primary pipe (41) includes an inlet pipe (411) and a return pipe (412). The return pipe (412) is located between the multiple battery modules (21) and the at least two fire-fighting device rows (311), and is located outside the at least two fire-fighting device rows (311).

13. The energy storage container (1) according to any one of claims 1-12, wherein, The energy storage container also includes multiple dehumidifiers (50), which are horizontally distributed between the bottom of the multiple battery modules (21) and the bottom cover (12).

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