Energy storage system and electric device

Abstract

The utility model provides an energy storage system and a power utilization device, and relates to the technical field of energy storage. According to the energy storage system provided by the invention, the internal sizes of the battery mechanism and the battery cabin in the first direction are the same, so that the interior of the battery cabin is used for accommodating the battery mechanism in the first direction, and the energy density of the energy storage system can be improved. According to the energy storage system provided by the invention, every two of the electrical cabin, the water cooling cabin and the battery cabin have enough fire prevention and electrical insulation, so that the safety performance of the energy storage system can be ensured.

Description

Technical Field

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

[0002] With the development of the energy storage market and energy storage technology, and the requirements of various application modes, battery containers are facing the need for high performance, easy maintenance, high-density integration, high strength, and low-cost design. However, there is still room for improvement in the high energy density of battery containers. Utility Model Content

[0003] In view of this, the present application provides an energy storage system and an electrical device, the purpose of which is to solve the above technical problems to a certain extent.

[0004] The present application provides an energy storage system, comprising:

[0005] A cabin, comprising a battery cabin, an electrical cabin, and a water-cooling cabin;

[0006] a battery mechanism, the battery mechanism being disposed in the battery compartment, wherein a dimension of the battery mechanism in a first direction is the same as an inner dimension of the battery compartment in the first direction;

[0007] an electrical mechanism, the electrical mechanism being disposed in the electrical compartment;

[0008] A chiller, the chiller being arranged in the water-cooled compartment and being used to cool the battery mechanism;

[0009] The electrical compartment and the water cooling compartment are located on the same side of the battery compartment in a second direction, and the second direction is perpendicular to the first direction;

[0010] There is a first spacing D1 between the electrical compartment and the water cooling compartment in the first direction, and the first spacing satisfies 1mm≤D1≤2mm; there is a second spacing D2 between the electrical compartment and the battery compartment in the second direction, and the second spacing satisfies 1mm≤D2≤2mm; there is a third spacing D3 between the water cooling compartment and the battery compartment in the second direction, and the third spacing satisfies 1mm≤D3≤2mm;

[0011] The ratio A1 of the volume of the water-cooling compartment to the volume of the electrical compartment satisfies 1≤A1≤3; the ratio A2 of the volume of the water-cooling compartment to the volume of the battery compartment satisfies 0.05≤A2≤0.1.

[0012] Preferably, the energy storage system further comprises a first fireproofing spacing member and a second fireproofing spacing member;

[0013] The first fireproofing partition member separates the battery compartment and the electrical compartment, and separates the battery compartment and the water-cooling compartment. The thickness of the first fireproofing partition member corresponding to the second interval is D2, the thickness of the first fireproofing partition member corresponding to the third interval is D3, and the second fireproofing partition member separates the electrical compartment and the water-cooling compartment. The thickness of the second fireproofing partition member corresponding to the first interval is D1.

[0014] Preferably, the energy storage system further comprises a fire-fighting mechanism, and the fire-fighting mechanism comprises a cabin-level fire-fighting assembly;

[0015] The cabin-level fire-fighting assembly includes a fire-fighting gas pipe extending through the battery compartment and a first gas nozzle arranged on the fire-fighting gas pipe. The cabin-level fire-fighting assembly also includes a fire-fighting temperature sensor and a smoke sensor arranged in the battery compartment and a first explosion relief valve arranged in the battery compartment.

[0016] Among them, the fire-fighting mechanism also includes a fire-fighting main control box, which is arranged in the electrical compartment, and the fire-fighting temperature sensor and the smoke sensor are electrically connected to the fire-fighting main control box. The fire-fighting main control box is configured to control the opening and closing of the first gas nozzle according to the fire-fighting temperature sensor and the smoke sensor.

[0017] Preferably, the firefighting mechanism further comprises a package-level firefighting assembly;

[0018] The battery mechanism includes a plurality of battery packs, each of which includes a box body. The pack-level fire protection assembly includes a second gas nozzle and a second explosion relief valve disposed in the box body, and a fire detector disposed in the box body. The second gas nozzle is connected to the fire protection gas pipe.

[0019] The fire detector is electrically connected to the fire main control box, and the fire main control box is further configured to control the opening and closing of the second gas nozzle according to the fire detector.

[0020] Preferably, the cabin includes a plurality of frames spaced apart in the second direction;

[0021] In which, the battery compartment includes multiple groups of columns for supporting the battery mechanism, the columns extend along a third direction, the multiple groups of columns are arranged in a one-to-one correspondence with the multiple frames, and the two ends of the columns are connected to the interior of the corresponding frames. The third direction is perpendicular to the first direction and the second direction.

[0022] Preferably, the battery compartments are multiple and arranged along the second direction;

[0023] The two adjacent groups of columns are located in the same battery compartment, and the two adjacent groups of columns are used to support the battery mechanism in the battery compartment.

[0024] Preferably, the energy storage system further comprises a hoisting assembly, which comprises a cushion block and a hanging shaft, wherein the cushion block is mounted on the cabin body, and a portion of the hanging shaft is embedded in the cushion block.

[0025] Preferably, the hanging assembly further includes a plurality of fasteners, wherein a portion of each of the plurality of fasteners is inserted into the spacer block to connect the spacer block and the hanging shaft.

[0026] Preferably, the battery mechanism comprises a plurality of battery packs, and the battery pack comprises a box;

[0027] The energy storage system includes a water supply network, which includes a primary water supply network, a secondary water supply network, a tertiary water supply network, and a liquid cooling plate corresponding to each battery pack;

[0028] Among them, the primary water supply network is connected to the chiller to form a water-cooled circulation network, the secondary water supply network is connected to the primary water supply network, the secondary water supply network is arranged in the battery compartment, the tertiary water supply network is connected to the secondary water supply network, and the tertiary water supply network is connected to the liquid cooling plate.

[0029] In a second aspect, the present application provides an electrical device, which includes the energy storage system described above.

[0030] According to the energy storage system provided in the present application, since the battery mechanism and the battery compartment have the same internal dimensions in the first direction, the interior of the battery compartment is used to accommodate the battery mechanism in the first direction, which is beneficial to improving the energy density of the energy storage system.

[0031] According to the energy storage system provided in this application, there are sufficient fire protection and electrical insulation intervals between the electrical compartment, the water cooling compartment and the battery compartment, which is conducive to improving the safety performance of the energy storage system.

[0032] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of a three-dimensional diagram of an energy storage system provided according to an embodiment of the present application is shown.

[0035] Figure 2 A schematic diagram of a three-dimensional diagram of an energy storage system provided according to an embodiment of the present application is shown, with the cabin structure omitted.

[0036] Figure 3 A schematic diagram showing a three-dimensional diagram of a thermal management mechanism of an energy storage system provided according to an embodiment of the present application.

[0037] Figure 4 A schematic diagram showing a three-dimensional diagram of a fire-fighting mechanism of an energy storage system provided according to an embodiment of the present application.

[0038] Figure 5 A schematic diagram showing a three-dimensional diagram of the cabin structure of the energy storage system provided according to an embodiment of the present application.

[0039] Figure 6 Show Figure 5 Schematic diagram of the enlarged view at AA in the middle.

[0040] Figure 7 A schematic diagram showing a top view of an energy storage system provided according to an embodiment of the present application is shown.

[0041] Figure 8 A schematic diagram of a bottom view of an energy storage system provided according to an embodiment of the present application is shown.

[0042] Figure 9 A schematic diagram of a right side view of an energy storage system provided according to an embodiment of the present application is shown.

[0043] Figure 10 A schematic diagram of a left view of an energy storage system provided according to an embodiment of the present application is shown.

[0044] Reference numerals:

[0045] 10-Electrical compartment; 20-Water cooling compartment; 30-Battery compartment; 31-First explosion relief valve;

[0046] 110-UPS and UPS battery; 120-monitoring box; 130-distribution box; 140-combiner box;

[0047] 210-chiller; 220-primary network; 230-secondary network; 240-third level network;

[0048] 310-battery pack; 320-main control box;

[0049] 410-firefighting gas pipe; 420-first gas nozzle; 430-second gas nozzle; 440-firefighting detector; 450-water firefighting nozzle; 460-water firefighting interface; 470-firefighting electrical pipe; 480-horizontal firefighting gas cylinder; 490-air inlet louver; 500-water firefighting pipe;

[0050] 510-column; 520-frame; 530-suspension shaft; 540-pad;

[0051] 610-fire main control box; 620-fire external control box;

[0052] 710-Dehumidifier drain hole; 720-Floor drain; 730-Bottom wire outlet hole; 740-Inlet fan; 750-Exhaust fan; 760-Sound and light alarm; 770-Fire control box; 780-Emergency stop assembly; 800-Air conditioner. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0054] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0056] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0057] According to the first aspect of the embodiment of the present application, an energy storage system is provided. Figures 1 to 10 Describe in detail the structure and working principle of the energy storage system.

[0058] According to the energy storage system provided in an embodiment of the present application, the energy storage system includes a cabin, a battery mechanism, an electrical mechanism, and a chiller 210. In an embodiment, the cabin includes a battery compartment 30, an electrical compartment 10, and a water-cooling compartment 20. The battery mechanism is disposed in the battery compartment 30, and the size of the battery mechanism in the first direction is the same as the internal size of the battery compartment 30 in the first direction. The electrical mechanism is disposed in the electrical compartment 10, and the chiller 210 is disposed in the water-cooling compartment 20, and the chiller 210 is used to cool the battery mechanism. In an embodiment, the electrical compartment 10 and the water-cooling compartment 20 are located on the same side of the battery compartment 30 in the second direction, and the second direction is perpendicular to the first direction.

[0059] In this way, according to the energy storage system provided in the embodiment of the present application, since the internal dimensions of the battery mechanism and the battery compartment 30 in the first direction are the same, the interior of the battery compartment 30 in the first direction is used to accommodate the battery mechanism, which is beneficial to improving the energy density of the energy storage system.

[0060] In the embodiment, there is a first interval D1 between the electrical compartment 10 and the water-cooling compartment 20 in the first direction, and the first interval satisfies 1mm≤D1≤2mm, there is a second interval D2 between the electrical compartment 10 and the battery compartment 30 in the second direction, and the second interval satisfies 1mm≤D2≤2mm, and there is a third interval D3 between the water-cooling compartment 20 and the battery compartment 30 in the second direction, and the third interval satisfies 1mm≤D3≤2mm.

[0061] In the embodiment, the ratio A1 of the volume of the water-cooling compartment to the volume of the electrical compartment satisfies, 1≤A1≤3; the ratio A2 of the volume of the water-cooling compartment to the volume of the battery compartment satisfies, 0.05≤A2≤0.1.

[0062] Thus, the energy storage system provided by the embodiment of the present application separates the two compartments by a partition provided between them, i.e., one compartment on one side of the partition and the other compartment on the other side of the partition. This ensures that the electrical compartment 10, the water-cooling compartment 20, and the battery compartment 30 have sufficient fireproof and electrical insulation between each other, thereby ensuring the safety performance of the energy storage system.

[0063] In an embodiment, D1, D2 and D3 may all take the following values: 1.2 mm, 1.4 mm, 1.6 mm or 1.8 mm.

[0064] In the embodiment, the above description also provides the conditions satisfied by the ratio A1 of the volume of the water-cooling compartment 20 to the volume of the electrical compartment 10. According to the above conditions, specifically, the minimum value of the volume of the water-cooling compartment 20 is the volume of the electrical compartment 10, and the maximum value of the volume of the water-cooling compartment 20 is 3 times the volume of the electrical compartment 10. According to the energy storage system provided in the embodiment of the present application, in the second direction, the dimensions of the electrical compartment 10 and the water-cooling compartment 20 are the same. This arrangement makes the shape of the battery compartment 30 directly adjacent to the two also regular, which is conducive to the arrangement of the battery mechanism. In addition, the heights of the electrical compartment 10 and the water-cooling compartment 20 are also the same. Therefore, the volume ratio of the water-cooling compartment 20 to the electrical compartment 10 is essentially the size ratio of the water-cooling compartment 20 to the electrical compartment 10 in the first direction.

[0065] In this embodiment, if the volume of the water-cooling compartment 20 is too small, for example, smaller than the electrical compartment 10, the electrical compartment 10 and the water-cooling compartment 20 will be out of proportion, resulting in the electrical compartment 10 being relatively large and creating redundant space for the electrical components. If the volume of the water-cooling compartment 20 is too large, for example, more than three times the volume of the electrical compartment 10, the increased volume of the water-cooling compartment 20 will excessively increase the risk of creepage between the water-cooling compartment 20 and the electrical compartment 10, which will be detrimental to the insulation performance of the energy storage system. As an example, the value of A1 above can be 1.5, 2, or 2.5.

[0066] In the embodiment, the above description also gives the conditions satisfied by the ratio A2 of the volume of the water-cooling chamber 20 to the volume of the battery chamber 30. According to the above conditions, specifically, the minimum value of the volume of the water-cooling chamber 20 is 1 / 20 of the volume of the battery chamber 30, and the maximum value of the volume of the water-cooling chamber 20 is 1 / 10 of the volume of the battery chamber 30.

[0067] In this embodiment, if the volume of the water-cooling chamber 20 is too small, for example, less than 1 / 20 of the volume of the battery compartment 30, the cooling capacity provided by the water-cooling chamber 20 will not be sufficient to meet the cooling requirements of the battery structure within the battery compartment 30. If the volume of the water-cooling chamber 20 is too large, for example, greater than 1 / 10 of the volume of the battery compartment 30, the increased volume of the water-cooling chamber 20 will result in an excessive decrease in the energy density of the energy storage system. As an example, the value of A2 above can be 0.06, 0.07, 0.08, or 0.09.

[0068] In addition, in an embodiment, the water-cooling compartment 20 and the electrical compartment 10 are both located on the same side of the battery compartment 30 in the second direction, so when maintaining both, maintenance only needs to be performed from one side. In addition, when maintaining the battery mechanism, only one side of the battery compartment 30 can be opened for maintenance, that is, the side opposite to the open side of the battery compartment 30 does not need to be opened. Therefore, since there is no equipment that needs maintenance on this side, there is no need to reserve a maintenance area on the outside of the energy storage mechanism, which is beneficial to saving the station layout area and thus increasing the energy density of the station layout. In an embodiment, as an example, the cabin body can be, for example, a container structure, and the container structure can be, for example, a rectangular parallelepiped shape. Therefore, the container structure can have a length direction, a width direction, and a height direction. In an embodiment, the above first direction can be the width direction of the container, and the above second direction can be the length direction of the container.

[0069] In an embodiment, in an example not shown, the water cooling compartment 20 and the electrical compartment 10 may be located on opposite sides of the compartment body in the length direction. In an embodiment of the present application, the water cooling compartment 20 and the electrical compartment 10 may be located on the same side of the compartment body in the length direction.

[0070] In an embodiment, as an example, the electrical mechanism in the electrical compartment 10 may include a UPS (Uninterruptible Power Supply) and a UPS battery 110, a monitoring box 120, a distribution box 130 and a junction box 140, a fire main control box 610, a fire external control box 620, a fire control box, an audible and visual alarm, an emergency stop component and an air conditioner.

[0071] In an embodiment, there may be multiple battery compartments 30, such as six as shown in the figure, and the six battery compartments 30 may be arranged sequentially along the length of the compartment body. In an embodiment, each battery compartment 30 may be provided with a corresponding battery mechanism, that is, in this example, there are six battery mechanisms.

[0072] In one embodiment, the battery system may include multiple battery packs 310 and a main control box 320. For example, eight battery packs 310 may be included, with four battery packs 310 electrically connected to form a battery cluster, resulting in two battery clusters. The two battery clusters are fed into the main control box 320. In one embodiment, the two battery clusters are located above the main control box 320.

[0073] According to the energy storage system provided in the embodiment of the present application, the energy storage system may include a first fireproof partition member, which separates the battery compartment 30 from the electrical compartment 10, and separates the battery compartment 30 from the water-cooled compartment 20. Specifically, the water-cooled compartment 20 and the electrical compartment 10 may be spaced apart in the width direction of the above-mentioned container. The first fireproof partition member may be, for example, a first fire wall, which substantially separates the battery compartment 30 adjacent to both the water-cooled compartment 20 and the electrical compartment 10 from both the water-cooled compartment 20 and the electrical compartment 10, so that the thermal radiation and electromagnetic radiation generated by the electrical mechanism in the electrical compartment 10 and the chiller 210 in the water-cooled compartment 20 do not affect the battery mechanism, so that the battery mechanism can maintain a relatively constant temperature such as 25°C.

[0074] In an embodiment, the energy storage system may further include a second fireproof partition component, which separates the electrical compartment 10 and the water-cooled compartment 20, so as to achieve thermal insulation and electrical insulation between the electrical compartment 10 and the water-cooled compartment 20. On the one hand, it avoids arcing, creepage and other leakage phenomena between the electrical compartment 10 and the water-cooled compartment 20; on the other hand, it avoids the cold energy in the water-cooled compartment 20 from being transferred to the electrical compartment 10.

[0075] In an embodiment, the second fireproof partition member may be, for example, a second fire wall. The first fire wall and the second fire wall may be formed as an integral fire wall, that is, the fire wall is made of a fireproof material such as asbestos.

[0076] In this embodiment, the thickness of the first fireproofing partition member corresponding to the second gap is D2, the thickness of the first fireproofing partition member corresponding to the third gap is D3, and the thickness of the second fireproofing partition member corresponding to the first gap is D1. In other words, the second and third gaps are filled with the first fireproofing partition member. In other words, the thickness of the first fireproofing partition member defines the second and third gaps. Specifically, the thickness of the first fireproofing partition member between the battery compartment 30 and the electrical compartment 10 is the second gap D2, and the thickness of the first fireproofing partition member between the battery compartment 30 and the water-cooling compartment 20 is the third gap D3. Similarly, the thickness of the second fireproofing partition member defines the first gap D1.

[0077] According to the energy storage system provided in the embodiments of the present application, the energy storage system may further include a firefighting mechanism, which may include a cabin-level firefighting assembly. In an embodiment, the cabin-level firefighting assembly may include a firefighting air pipe 410 extending through the battery compartment 30 and a first gas nozzle 420 disposed on the firefighting air pipe 410. The cabin-level firefighting assembly may also include a firefighting temperature sensor and a smoke sensor disposed within the battery compartment 30, as well as a first explosion relief valve 31 disposed within the battery compartment 30.

[0078] In an embodiment, the fire-fighting agency also includes a fire-fighting main control box 610 as mentioned in the above description. The fire-fighting main control box 610 can be arranged in the electrical compartment 10. The fire-fighting temperature sensor and the smoke sensor can be electrically connected to the fire-fighting main control box 610. The fire-fighting main control box 610 can be configured to control the opening and closing of the first gas nozzle 420 according to the fire-fighting temperature sensor and the smoke sensor.

[0079] In this embodiment, the compartment-level fire protection component, i.e., the fire protection component at the battery compartment 30 level, directly targets the battery compartment 30. As mentioned above, the fire protection temperature sensor and smoke sensor are used to detect the temperature and smoke within the battery compartment 30, respectively. If the fire protection temperature sensor detects that the temperature within the battery compartment 30 exceeds the preset temperature within the fire protection main control box 610 and / or the smoke sensor detects the presence of smoke within the battery compartment 30, the fire protection main control box 610 can control the activation of the first gas nozzle 420, as described above, to spray fire protection gas into the battery compartment 30, thereby suppressing battery thermal runaway.

[0080] In an embodiment, a first explosion relief valve 31 can be provided on the wall of the battery compartment 30. When the air pressure in the battery compartment 30 increases due to the eruption of fire-fighting gas, the first explosion relief valve 31 opens under the action of the pressure difference between the inside and outside of the battery compartment 30, thereby releasing the pressure in the battery compartment 30 and preventing possible explosion of the battery compartment 30.

[0081] According to the energy storage system provided in the embodiment of the present application, the fire protection mechanism may further include a pack-level fire protection component (i.e., a PACK-level fire protection component). Specifically, the pack-level fire protection component may include a second gas nozzle 430 and a second explosion relief valve disposed in the box body, as well as a fire detector 440 disposed in the box body. The second gas nozzle 430 may be connected to the fire air pipe 410. In the embodiment, the fire detector 440 is electrically connected to the fire main control box 610, and the fire main control box 610 may also be configured to control the opening and closing of the second gas nozzle 430 based on the fire detector 440.

[0082] In the embodiment, the pack-level fire protection component is a fire protection component at the battery compartment 30 level, and its fire protection effect is directly effective on the battery compartment 30. As mentioned in the above description, the fire detector 440 is used to detect identifiable fire signals in the battery pack 310, such as temperature and / or smoke. When the fire detector 440 and the fire control box 610 feedback an identifiable fire signal, the fire control box 610 can control the second gas nozzle 430 as mentioned above to open and spray fire protection gas into the battery pack 310, thereby suppressing battery thermal runaway. Here, the second explosion relief valve can also reduce the pressure in the battery pack 310 by opening, thereby avoiding possible explosion of the battery pack 310.

[0083] In this embodiment, the cabin-level firefighting assembly may also include a firefighting water pipe 500. This pipe 500 may extend along its length through each battery compartment 30 and be equipped with a corresponding firefighting water nozzle 450. When the cabin-level firefighting assembly is triggered, the firefighting water nozzle 450 may be activated by the firefighting main control box 610 to extinguish the fire. For example, firefighting gas may be released upon detecting a temperature rise, while water may be released upon detecting smoke. The cabin-level firefighting assembly also includes a firefighting water interface 460.

[0084] In addition, in the embodiment, the fire fighting mechanism may further include a horizontal fire fighting gas cylinder 480 for providing fire fighting gas, a fire fighting electrical pipe 470 and an air intake louver 490 .

[0085] According to the energy storage system provided in the embodiment of the present application, the cabin may include a plurality of frames 520 spaced apart in the width direction. In the embodiment, the frames 520 may be, for example, rectangular frames 520, which include two top beams extending in the width direction and opposing each other in the height direction, and two side beams extending in the height direction and opposing each other in the width direction.

[0086] In an embodiment, the battery compartment 30 may include multiple groups of columns 510 for supporting the battery mechanism. The columns 510 may extend in the height direction. The aforementioned multiple groups of columns 510 may be arranged in a one-to-one correspondence with the aforementioned multiple frames 520, and the ends of the columns 510 may be connected to the interior of the corresponding frames 520. In an embodiment, a group of columns 510 may, for example, include three columns 510, and the three columns 510 may be arranged at intervals in the width direction. In an embodiment, the three columns 510 may each be welded to the two top beams. Since the top beam is connected to the side beam, the stability and load-bearing capacity of the three columns 510 are effectively guaranteed.

[0087] According to the energy storage system provided in the embodiment of the present application, in the embodiment, two adjacent groups of columns 510 are located in the same battery compartment 30, and the two adjacent groups of columns 510 are used to support the battery mechanism in the battery compartment 30. That is to say, for multiple battery packs 310 in the same battery mechanism, the multiple battery packs 310 can be assumed to be between the two groups of columns 510, thereby improving the stability of the battery packs 310.

[0088] According to the energy storage system provided in the embodiment of the present application, the energy storage system may further include a lifting assembly, which may include a cushion block 540 and a suspension shaft 530. The cushion block 540 may be mounted on the cabin, and a portion of the suspension shaft 530 may be embedded in the cushion block 540. In this embodiment, unlike the prior art where the suspension shaft 530 and the cushion block 540 are directly connected by screws, a portion of the suspension shaft 530 is embedded in the cushion block 540, which helps to improve the connection strength between the suspension shaft 530 and the cushion block 540.

[0089] According to the energy storage system provided in the embodiment of the present application, the energy storage system includes a water supply network, which may include a primary water supply network 220, a secondary water supply network 230, a tertiary water supply network 240, and a liquid cooling plate provided for each battery pack 310. The primary water supply network 220 may be connected to the chiller 210 to form a water-cooled circulation network, the secondary water supply network 230 may be connected to the primary water supply network 220, the secondary water supply network 230 may be provided in the battery compartment 30, the tertiary water supply network 240 may be connected to the secondary water supply network 230, and the tertiary water supply network 240 may be connected to the liquid cooling plate. The coolant circulating in the water supply network may be, for example, 50% ethylene glycol + 50% purified water.

[0090] In the embodiments, the present application provides a liquid-cooled containerized battery energy storage system, which can be applied to industrial and commercial energy storage power stations, liquid-cooled battery aging platforms, and large liquid-cooled laboratories. Based on the above description, the energy storage system will be further described in more detail below.

[0091] The first aspect of the present application's embodiments provides a high-density liquid-cooled energy storage container system. Regarding the exterior and maintenance interface of the energy storage container, to increase the energy density of the integrated battery, the battery box can be made into a 104S, allowing for the placement of one battery box across the entire width of the container. This allows the battery box to be maintained from only one side of the container, eliminating the need for a door or reserved maintenance space on the rear side. This allows the rear side of the container to be placed against a wall or back-to-back with another container, saving floor space.

[0092] In this embodiment, the battery compartment 30 houses battery modules with liquid cooling plates, a battery rack, a three-stage water supply and drainage network, a fire protection network, and power cables. Specifically, the battery rack supports eight layers of battery modules and a main control box 320, forming two clusters of four battery modules each. Two clusters of eight battery modules each connect to the main control box 320 below. The main control box 320 combines two inputs into one output.

[0093] In this embodiment, the three-stage water supply network consists of a primary pipeline (leading out from the outlet flange of the chiller 210), a secondary management pipeline (a branch of the primary pipeline, corresponding to each battery cluster and assigning a branch to each battery module), and a tertiary pipeline (a branch of the secondary pipeline, connecting each battery module). This pipeline delivers cooling liquid to the battery temperature control system. The drainage network is similar in structure to the water supply network, differing in that the water supply pipe runs through the container floor as a primary pipe, while the drainage pipe runs through the container roof as a primary pipe.

[0094] In this embodiment, the chiller 210 is located next to the battery compartment 30, isolating it from the electrical compartment 10 and facilitating direct cable access to the compartment. The chiller 210 is the core component of the liquid-cooled thermal management system, providing functions such as refrigeration drive, refrigerant-driven circulation, temperature control, flow control, and exhaust. The chiller 210, along with the water supply and return pipes and the battery liquid cooling plate, forms a closed-loop circulation system. All pipe lumens in this system are filled with refrigerant and are airtight.

[0095] In this embodiment, chiller 210 receives instructions from the host EMS (Energy Management System) to activate a circulating pump to drive the coolant, which travels from the water supply flange through the primary water supply line, secondary water supply line, tertiary water supply line, multi-layer battery liquid cooling plate, tertiary return water line, secondary return water line, primary return water line, return flange, and finally to the unit's internal cooling water tank. Heat transferred from the batteries to the liquid cooling plate is then carried by the coolant through this full-circuit shuttle to the chiller 210's cooling water tank for further cooling. This repetitive cycle continuously cools (regulates) the battery temperature.

[0096] In an embodiment, for cabin-level fire protection, a horizontal fire cylinder can be placed at the rear of the bottom of the energy storage container, and a small door can be set from the right end face for maintenance. The fire pipe can be led from the side to the top of the container. A fire gas pipe 410 can be arranged on the top of the container, and a certain number of first gas nozzles 420 can be set. A fire temperature sensor and a smoke sensor can be arranged at the front of the top of the container, and connected to the fire main control box 610 of the electrical compartment 10 through the top front wire pipe. After the fire detector 440 on the top of the container detects an abnormality, the system can control the fire gas injection on the top of the container.

[0097] In an embodiment, for PACK-level fire protection, a fire detector 440 can be installed in the battery box, and a second gas nozzle 430 and a second explosion relief valve are installed on the front panel of the battery box. The fire gas is introduced from the gas pipe on the top of the container. When the fire detector 440 in the battery box detects an abnormality, the fire gas can be sprayed after the system determines it, and the second explosion relief valve can play a pressure relief role.

[0098] In this embodiment, due to the heavy weight of the battery box, a high-strength support structure is required. The battery box can be supported by two left and right slides, both of which can be welded to the columns 510 on either side of the battery box. Therefore, all load-bearing is concentrated on the columns 510 on either side of the battery box. The three columns 510 on each side of the battery rack can be firmly welded to the frame 520 formed by the top and side beams of the container, and then welded to the side beams of the container, forming a high-strength frame 520 structure, ensuring the load-bearing capacity of the battery rack columns 510.

[0099] In the embodiment, due to the high energy density of the entire container, which increases its weight, conventional container lifting shaft structures in the prior art are no longer able to meet the lifting strength requirements. Conventional lifting shaft assemblies, in which the lifting shaft 530 and the spacer 540 are attached together, rely solely on four bolts around the perimeter to withstand all lifting forces, limiting the lifting weight. For example, if the pure shear bearing capacity of a standard M16 bolt is approximately 2.8 tons, a single lifting shaft 530 using four bolts can withstand a total of 2.8 x 4 = 11.2 tons, which is insufficient.

[0100] In this embodiment of the reinforced suspension shaft assembly, suspension shaft 530 protrudes slightly and embeds directly into spacer block 540. The embedded suspension shaft 530 and the surrounding M16 screws together bear the lifting force. The suspension shaft 530 has a diameter of 60 mm, while the bolts have a diameter of 16 mm. Calculating the cross-sectional area shows that the suspension shaft 530 is 14 times the size of the bolts. If the pure shear bearing capacity of a standard M16 bolt is approximately 2.8 tons, the reinforced suspension shaft 530 can support a load of 39.2 tons, far exceeding the 11.2 tons of a standard suspension shaft 530 and meeting the required lifting strength.

[0101] In addition, in an embodiment, a dehumidifier drainage hole 710, a floor drain 720 and a bottom wire outlet hole 730 can be provided at the bottom of the container, an air intake fan 740 can be provided on one side in the length direction of the container, an exhaust fan 750 can be provided on a battery compartment, and an audible and visual alarm 760, a fire control box 770, an emergency stop component 780, a fire external control box 620 and an air conditioner 800 can be provided on the outside of the electrical compartment.

[0102] According to a second aspect of an embodiment of the present application, an electrical device is provided. The electrical device includes the above energy storage system and the above beneficial effects, which will not be repeated here.

[0103] The above are only preferred embodiments of the present application and do not limit the scope of protection of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings under the innovative concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. An energy storage system, characterized in that: The energy storage system comprises: A cabin, comprising a battery cabin, an electrical cabin, and a water-cooling cabin; a battery mechanism, the battery mechanism being disposed in the battery compartment, wherein a dimension of the battery mechanism in a first direction is the same as an inner dimension of the battery compartment in the first direction; an electrical mechanism, the electrical mechanism being disposed in the electrical compartment; A chiller, the chiller being arranged in the water-cooled compartment and being used to cool the battery mechanism; The electrical compartment and the water cooling compartment are located on the same side of the battery compartment in a second direction, and the second direction is perpendicular to the first direction; There is a first spacing D1 between the electrical compartment and the water cooling compartment in the first direction, and the first spacing satisfies 1mm≤D1≤2mm; there is a second spacing D2 between the electrical compartment and the battery compartment in the second direction, and the second spacing satisfies 1mm≤D2≤2mm; there is a third spacing D3 between the water cooling compartment and the battery compartment in the second direction, and the third spacing satisfies 1mm≤D3≤2mm; The ratio A1 of the volume of the water-cooling compartment to the volume of the electrical compartment satisfies 1≤A1≤3; the ratio A2 of the volume of the water-cooling compartment to the volume of the battery compartment satisfies 0.05≤A2≤0.

1.

2. The energy storage system according to claim 1, characterized in that The energy storage system further includes a first fireproof spacing member and a second fireproof spacing member; The first fireproofing partition member separates the battery compartment and the electrical compartment, and separates the battery compartment and the water-cooling compartment. The thickness of the first fireproofing partition member corresponding to the second interval is D2, the thickness of the first fireproofing partition member corresponding to the third interval is D3, and the second fireproofing partition member separates the electrical compartment and the water-cooling compartment. The thickness of the second fireproofing partition member corresponding to the first interval is D1.

3. The energy storage system according to claim 1, characterized in that The energy storage system further includes a fire-fighting mechanism, which includes a cabin-level fire-fighting assembly; The cabin-level fire-fighting assembly includes a fire-fighting gas pipe extending through the battery compartment and a first gas nozzle arranged on the fire-fighting gas pipe. The cabin-level fire-fighting assembly also includes a fire-fighting temperature sensor and a smoke sensor arranged in the battery compartment and a first explosion relief valve arranged in the battery compartment. Among them, the fire-fighting mechanism also includes a fire-fighting main control box, which is arranged in the electrical compartment, and the fire-fighting temperature sensor and the smoke sensor are electrically connected to the fire-fighting main control box. The fire-fighting main control box is configured to control the opening and closing of the first gas nozzle according to the fire-fighting temperature sensor and the smoke sensor.

4. The energy storage system according to claim 3, characterized in that The firefighting mechanism also includes a package-level firefighting assembly; The battery mechanism includes a plurality of battery packs, each of which includes a box body. The pack-level fire protection assembly includes a second gas nozzle and a second explosion relief valve disposed in the box body, and a fire detector disposed in the box body. The second gas nozzle is connected to the fire protection gas pipe. The fire detector is electrically connected to the fire main control box, and the fire main control box is further configured to control the opening and closing of the second gas nozzle according to the fire detector.

5. The energy storage system according to claim 1, characterized in that: The cabin includes a plurality of frames spaced apart in a second direction; In which, the battery compartment includes multiple groups of columns for supporting the battery mechanism, the columns extend along a third direction, the multiple groups of columns are arranged in a one-to-one correspondence with the multiple frames, and the two ends of the columns are connected to the interior of the corresponding frames. The third direction is perpendicular to the first direction and the second direction.

6. The energy storage system according to claim 5, characterized in that: There are multiple battery compartments and they are arranged along the second direction; The two adjacent groups of columns are located in the same battery compartment, and the two adjacent groups of columns are used to support the battery mechanism in the battery compartment.

7. The energy storage system according to claim 1, characterized in that: The energy storage system further includes a lifting assembly, which includes a cushion block and a lifting shaft, wherein the cushion block is mounted on the cabin body, and a portion of the lifting shaft is embedded in the cushion block.

8. The energy storage system according to claim 7, characterized in that: The hanging assembly further includes a plurality of fasteners, wherein a portion of each of the fasteners is inserted into the spacer block to connect the spacer block and the hanging shaft.

9. The energy storage system according to claim 1, characterized in that: The battery mechanism includes a plurality of battery packs, and the battery pack includes a box; The energy storage system includes a water supply network, which includes a primary water supply network, a secondary water supply network, a tertiary water supply network, and a liquid cooling plate corresponding to each battery pack; Among them, the primary water supply network is connected to the chiller to form a water-cooled circulation network, the secondary water supply network is connected to the primary water supply network, the secondary water supply network is arranged in the battery compartment, the tertiary water supply network is connected to the secondary water supply network, and the tertiary water supply network is connected to the liquid cooling plate.

10. An electrical device, characterized in that: The electrical device includes the energy storage system according to any one of claims 1 to 9.

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