An energy storage device, energy storage system and charging network

Abstract

The embodiment of the present application provides a kind of energy storage device, energy storage system and charging network, the energy storage device includes energy storage tower group and first hardware.The energy storage tower group includes multiple energy storage towers, each energy storage tower has standardized structure, each energy storage tower in energy storage tower group is surrounded to form installation space, and the energy storage tower includes multiple functional modules stacked along the first direction, and the functional module is provided with electrical connection area, and at least part of electrical connection area is located on the side of functional module towards installation space.The at least part of first hardware passes through in installation space and is electrically connected to the electrical connection area of two energy storage towers, so that each energy storage tower in energy storage tower group is connected in series.The energy storage device in the embodiment of the present application is beneficial to reduce the three-dimensional size required for arranging energy storage device, improve the flexibility of energy storage device arrangement, is beneficial to improve space utilization, is beneficial to reduce the construction cost of site for arranging energy storage device.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, specifically to an energy storage device, an energy storage system, and a charging network. Background Technology

[0002] Energy storage towers are an important component of energy storage systems. The specific arrangement of energy storage devices formed by the electrical interconnection of multiple energy storage towers directly affects the number of energy storage towers that can be placed in a unit space, and directly impacts the flexibility of energy storage device deployment. Summary of the Invention

[0003] In view of this, the embodiments of this application aim to provide an energy storage device, energy storage system and charging network that are conducive to improving space utilization.

[0004] To achieve this objective, the technical solution of this application embodiment is implemented as follows: This application provides an energy storage device, including: An energy storage tower group includes multiple energy storage towers, each of which has a standardized structure. The energy storage towers in the energy storage tower group are arranged to form an installation space. Each energy storage tower includes a functional module, and the functional module is provided with an electrical connection area. At least a portion of the electrical connection area is located on the side of the functional module facing the installation space. A first fitting, at least a portion of which passes through the installation space and electrically connects the electrical connection areas of the two energy storage towers, so that the energy storage towers are connected in series.

[0005] The energy storage device in this embodiment, by having each energy storage tower surround an installation space, eliminates the need for the towers to be arranged in a single straight line. This reduces the three-dimensional dimensions required for the energy storage device, improves the flexibility of its arrangement, increases space utilization, and lowers construction costs. The electrical connection area faces the interior of the installation space, which helps reduce the size of the first fitting. Furthermore, it allows workers to perform maintenance from the side of the energy storage tower away from the installation space without being disturbed by the first fitting.

[0006] In some embodiments, the energy storage towers in the energy storage tower group include a first tower and multiple second towers. The multiple second towers are arranged in two rows along a second direction, and the second towers in each row are arranged along a third direction. The second direction and the third direction intersect each other. The first tower is located on one side of the two rows of second towers along the third direction to jointly enclose the installation space. The electrical connection area of ​​the first tower is located on its side along the third direction. The electrical connection areas of the two rows of second towers are opposite each other along the second direction. The first fitting includes a first sub-fitting and a second sub-fitting. The first sub-fitting connects the first tower and the second tower, and the second sub-fitting connects the two second towers. This is beneficial for reducing the size required for the energy storage device to be arranged along the third direction; the two rows of second towers are beneficial for making fuller use of the space along the second direction and improving space utilization; each energy storage tower has a portion facing away from the installation space so that personnel can perform maintenance without entering the installation space.

[0007] In some embodiments, the electrical connection area in the first row of second towers is located on the side of the second tower closer to the first tower along the third direction, and the second tower closest to the first tower in that row is connected to the first tower via a first sub-fitting. The electrical connection area in the second row of second towers is located on the side of the second tower farther from the first tower along the third direction. This is advantageous in reducing the size of the first sub-fitting, lowering the risk of interference between the arrangement of the first sub-fitting and the second row of second towers; it also allows for the use of the same type of energy storage tower in both rows of second towers, reducing the cost of the energy storage device.

[0008] In some embodiments, of the two second towers connected to the second sub-fitting, the second tower belonging to the second column is located on the side of the second tower belonging to the first column closer to the first tower along the third direction. This helps to reduce the size of the second sub-fitting, saves space required for the second sub-fitting, facilitates a more compact arrangement of the energy storage device, and reduces the probability of interference between the second sub-fitting and other objects.

[0009] In some embodiments, the number of energy storage tower groups is multiple, and the energy storage device further includes a second fitting that electrically connects each group of energy storage towers. Thus, the second fitting connects the energy storage tower groups in series, allowing for greater diversity in the number and arrangement of the energy storage tower groups.

[0010] In some embodiments, the second fitting includes a third sub-fitting, and the first towers in at least two groups of energy storage towers are arranged along the second direction, with the two first towers connected via the third sub-fitting. Thus, series connection between different groups of energy storage towers is achieved by electrically connecting the first towers in different groups of energy storage towers.

[0011] In some embodiments, the second fitting includes a fourth sub-fitting, and at least two sets of the energy storage towers are arranged along the second direction. The fourth sub-fitting connects the second tower in one of the two sets of energy storage towers to the end furthest from the first tower along the third direction. Thus, by electrically connecting the second towers in different sets of energy storage towers through the fourth sub-fitting, series connection between different sets of energy storage towers is achieved. Simultaneously, this facilitates maintenance work, allowing personnel to perform maintenance between the two sets of energy storage towers without being easily disturbed by the fourth sub-fitting.

[0012] In some embodiments, the energy storage tower further includes an equalizing ring and a first electrical connector. The equalizing ring is located at least a portion of the periphery of the functional module, and the first electrical connector connects the equalizing ring to the electrical connection area. The energy storage device also includes a third fitting that connects the equalizing rings of two adjacent energy storage towers. Thus, by utilizing the annular shape of the equalizing ring to connect the third fitting to the equalizing ring, the connection position of the third fitting can be adjusted more flexibly, reducing the adverse effects of the positional limitations of the electrical connection area between the two energy storage towers on the arrangement of the third fitting, and also helping to reduce the size of the third fitting.

[0013] In some embodiments, the third fitting includes a fifth sub-fitting that connects the equalizing rings of the two second towers facing each other along the second direction. This achieves the goal of connecting the two second towers in series along the second direction, and the equalizing rings of the two second towers are positioned identically along the first direction, which helps to reduce the size of the fifth sub-fitting.

[0014] In some embodiments, the third fitting includes a sixth sub-fitting that connects the equalizing rings of the two second towers opposite each other along the third direction. This achieves the goal of connecting two second towers opposite each other along the third direction in the same column. When the second towers are of the same type, the equalizing rings of the two second towers are positioned in the same direction, which helps to reduce the size of the sixth sub-fitting.

[0015] In some embodiments, the third fitting connects to the equalizing ring at a location near the other equalizing ring to which the third fitting is connected. This allows for a further reduction in the size of the third fitting and lowers the risk of interference between the third fitting's arrangement and other components in the energy storage device.

[0016] In some embodiments, the energy storage tower includes multiple functional modules stacked along a first direction. The energy storage tower also includes a second electrical connector extending along the first direction to connect two adjacent functional modules along the first direction, thereby connecting the functional modules in the energy storage tower in series. An equalizing ring surrounds at least a portion of the circumference of each functional module along the first direction. Thus, multiple functional modules can be connected in series via the first electrical connector, the second electrical connector, and the equalizing ring.

[0017] In some embodiments, the equalizing ring is disposed at the first end of the functional module along the first direction in the energy storage tower, and is located at the end of the functional module away from other functional modules. The first fitting is connected to the functional module at the second end along the first direction in the energy storage tower. This allows current to flow through all functional modules in the energy storage tower at once; reduces the probability of interference between the first and third fittings in the first direction; and ensures that the electrical connection areas of the functional modules connected to the first fitting are approximately at the same position in the first direction, which helps to reduce the size of the first fitting.

[0018] In some embodiments, the first direction is vertical, and the equalizing ring is located at the highest point of the energy storage tower. This further reduces the probability of interference between the third fitting and other objects in the energy storage device, and improves the utilization rate of space in the vertical direction.

[0019] In some embodiments, in two adjacent energy storage towers along the current flow direction, the current direction of one tower flows from the equalizing ring to the electrical connector, while the current direction of the other tower flows from the electrical connector to the equalizing ring. This allows the first fitting to connect to the electrical connection areas of two energy storage towers located in the same position in the first direction, and allows the third fitting to connect to the equalizing ring of two energy storage towers located in the same position in the first direction. This eliminates the need for the two ends of the first and third fittings to be offset in the first direction, thereby reducing the size of the first and second fittings.

[0020] In some embodiments, the functional module includes a housing, a first DC bus, and a second DC bus, the first DC bus and the second DC bus extending at least partially out of the housing and together forming the electrical connection area, the first DC bus and the second DC bus being arranged horizontally. Thus, the horizontal arrangement of the first DC bus and the second DC bus makes it less likely that a first fitting adapted to one of them will come into contact with the other or other objects in the energy storage device under the influence of gravity.

[0021] In some embodiments, the functional module further includes an adapter that connects one of the first DC bus and the second DC bus to the first fitting. The adapter extends from the housing towards the other energy storage tower. This reduces the bending radius of the first fitting when connecting different energy storage towers, facilitating its installation.

[0022] In some embodiments, the vertical distance between the electrical connection area and the bottom of the functional module is a first height dimension, and the vertical dimension of the functional module is a second height dimension. The proportion of the first height dimension to the second height dimension ranges from 30% to 70%. This helps to reduce the probability of the first hardware connected to the electrical connection area contacting the ground under gravity, and also helps to raise the height of the first hardware, reducing the space occupied by the maintenance passage.

[0023] This application also provides an energy storage system, including an energy storage device as described in any of the foregoing embodiments, wherein the functional module is used to release electrical energy or replenish electrical energy.

[0024] Thus, by adopting the energy storage device in the aforementioned embodiments, it is beneficial to reduce the footprint of the energy storage system, improve the space utilization rate of the energy storage system, and provide convenience for staff to carry out maintenance.

[0025] This application also provides a charging network, including an energy storage device as described in any of the foregoing embodiments, wherein the functional module is used to release electrical energy or replenish electrical energy.

[0026] Thus, by adopting the energy storage device in the aforementioned embodiments, it is beneficial to reduce the footprint of the charging network, improve the space utilization rate in the charging network, and provide convenience for staff to carry out maintenance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the charging network structure in some embodiments of this application; Figure 2 This is a schematic diagram of the energy storage system in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of the energy storage device in some embodiments of this application; Figure 4 This is a schematic diagram of the electrical principle of the energy storage device in the embodiments of this application; Figure 5 This is a schematic diagram of the layout of the energy storage device according to Embodiment 1 of this application; Figure 6 for Figure 5 A magnified view of a portion of position A in the diagram; Figure 7 for Figure 5A schematic diagram of the Chinese embodiment from another perspective; Figure 8 for Figure 7 A magnified view of a portion of position B in the diagram; Figure 9 This is a schematic diagram of a downlink tower in one embodiment of this application; Figure 10 This is a schematic diagram of an uplink tower in one embodiment of this application; Figure 11 This is a schematic diagram of the layout of the energy storage device according to Embodiment 2 of this application; Figure 12 This is a schematic diagram of the layout of the energy storage device according to Embodiment 3 of this application; Figure 13 for Figure 12 A schematic diagram of the Chinese embodiment from another perspective; Figure 14 This is a schematic diagram of the first sub-fitting in an embodiment of this application; Figure 15 This is a schematic diagram of the second sub-fitting in an embodiment of this application; Figure 16 This is a schematic diagram of the fifth sub-fitting in the embodiments of this application; Figure 17 This is a schematic diagram of the fourth sub-fitting in the embodiments of this application.

[0028] Explanation of reference numerals in the attached figures 1000 Charging network; 2000 Energy storage system; 3000 Power generation device; 100 Battery device; 200 Energy storage device; 210 Energy storage enclosure; 220 Power module; 300 Charging pile; 400 Energy storage converter; 500 Energy storage tower group; 10 Energy storage tower; 10a Installation space; 10b Electrical connection area; 101 Functional module; 1011 Enclosure; 1012 First DC bus; 1013 Second DC bus; 1014 Adapter; 102 First electrical connection; 103 Equalizing ring; 1031 Fourth Fittings; 1032, Arc-shaped rod; 104, Second electrical connector; 11, First tower; 12, Second tower; 13, Upward tower; 14, Downward tower; 20, First fitting; 21, First sub-fittings; 22, Second sub-fittings; 23, First conductive stranded wire; 24, First connector; 30, Second fitting; 31, Third sub-fittings; 311, Second conductive stranded wire; 32, Fourth sub-fittings; 321, Conductive conduit; 322, Insulating fastener; 323, Flexible busbar; 40, Third fitting; 41, Fifth sub-fittings; 42, Sixth sub-fittings; 43, Third conductive stranded wire. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and drawings of this application are intended to cover non-exclusive inclusion.

[0031] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0034] In the description of the embodiments of this application, for ease of explanation, as shown in the accompanying drawings, the direction of arrow X is referred to as the "first direction", the direction of arrow Y as the "second direction", and the direction of arrow Z as the "third direction".

[0035] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the terms in the embodiments of this application can be understood according to the specific circumstances.

[0036] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0037] Please refer to Figure 1 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a charging network 1000 provided in some embodiments of this application. Figure 3 This is a schematic diagram of the structure of an energy storage device 200 provided in some embodiments of this application. Embodiments of this application provide a charging network 1000, which includes a charging pile 300 for charging electrical equipment. The charging network 1000 may also include an energy storage device 200, which is electrically connected to the charging pile 300 and provides power to the charging pile 300.

[0038] It should be noted that the charging pile 300 and the battery cells in the energy storage device 200 are electrically connected via cables, and the battery cells can supply their stored electrical energy to the charging pile 300. The charging pile 300 has a connector that can be connected to electrical equipment, thereby replenishing the equipment's power. The application of the energy storage device 200 in this charging network 1000 can effectively improve the safety of the charging network 1000 and also help to enhance the flexibility of the charging network 1000 during deployment.

[0039] In a charging network 1000, there can be one charging pile 300, and the energy storage device 200 provides power to the one charging pile 300; there can also be multiple charging piles 300, and the energy storage device 200 provides power to multiple charging piles 300.

[0040] As an example, such as Figure 1 As shown, the charging network 1000 includes an energy storage device 200 and two charging piles 300, with the energy storage device 200 providing power to the two charging piles 300.

[0041] The energy storage device 200 may include a battery device 100, which is electrically connected to the charging pile 300 so that the battery device 100 can provide power to the charging pile 300.

[0042] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of an energy storage system 2000 provided in some embodiments of this application. Embodiments of this application provide an energy storage system 2000. The energy storage system 2000 includes an energy storage converter 400, which is electrically connected to a generator 3000 to convert the electrical power provided by the generator 3000. The energy storage system 2000 may also include an energy storage device 200, which is electrically connected to the energy storage converter 400. The energy storage converter 400 converts the electrical energy provided by the generator 3000 and stores it in the energy storage device 200.

[0043] A power conversion device is used to connect the power generation device 3000 and the energy storage device 200. The power generation device 3000 generates electrical energy and stores it in the energy storage device 200 via the power conversion device. The use of the energy storage device 200 in the energy storage system 2000 effectively improves its operational safety. In specific implementations, the power generation equipment can be solar panels, hydroelectric power generation equipment, thermal power generation equipment, etc. This application does not limit the specific type of power generation equipment.

[0044] As an example, such as Figure 2 As shown, the energy storage system 2000 includes an energy storage device 200 and an energy storage converter 400. The two power generation devices 3000 respectively transmit the generated electrical energy to the energy storage converter 400, and the energy storage converter 400 introduces the electrical energy into the energy storage device 200 for storage.

[0045] Please refer to Figure 3 The energy storage device 200 includes an energy storage box 210, and a battery device 100 is installed inside the energy storage box 210.

[0046] As an example, the energy storage device 200 can be an energy storage container, an energy storage cabinet, etc.

[0047] As an example, energy storage device 200 can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage power stations can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. Wind power generation systems collect wind energy from wind turbines, convert it into electrical energy, and store it in energy storage device 200. Solar power generation systems can convert solar energy into electrical energy, store it in energy storage device 200, and supply it to users as needed. Mobile power systems can supply power to relevant electrical equipment in areas where the mains power supply cannot reach, such as remote mountainous areas and remote wilderness areas. Temporary power supply systems can provide power to users when there is insufficient power supply.

[0048] The embodiments of this application will now be described in detail.

[0049] The energy storage system deploys multiple energy storage towers as needed, and these towers are connected in series with each other using various types of components to form an energy storage device. This energy storage device is then placed in a pre-designated factory building for use.

[0050] In related technologies, energy storage towers in an energy storage device are arranged in a straight line along a predetermined direction to achieve series connection, with the tops and bottoms of adjacent energy storage towers connected or the bottoms connected to each other. This results in two problems: firstly, the space required for the energy storage device to accommodate the linear arrangement of the towers; secondly, the connection between the tops and bottoms of adjacent towers requires larger hardware for the connection, and it hinders the movement of personnel between the towers for inspection and maintenance.

[0051] Based on the aforementioned technical problems, the embodiments of this application aim to provide an energy storage device in which energy storage towers are arranged to form an installation space. At least a portion of the electrical connection area of ​​each functional module in the energy storage tower is located on the side of the functional module facing the installation space. At least a portion of the first fitting for connecting the electrical connection areas of each energy storage tower passes through the installation space. This eliminates the need for the energy storage towers to be arranged along a single straight line, reducing the space required for the energy storage device's layout. The arrangement of the first fitting utilizes the space within the installation space, improving space utilization, and also facilitates maintenance by personnel from the side of each energy storage tower away from the installation space, minimizing interference with the first fitting.

[0052] Specifically, see Figure 4 , Figure 5 , Figure 7 and Figure 8 This application provides an energy storage device. The energy storage device includes an energy storage tower assembly 500 and a first fitting 20.

[0053] The energy storage tower group 500 includes multiple energy storage towers 10, each energy storage tower 10 having a standardized structure. Each energy storage tower 10 in the energy storage tower group 500 is arranged to form an installation space 10a. Each energy storage tower 10 includes a functional module 101. The functional module 101 is provided with an electrical connection area 10b. At least a portion of the electrical connection area 10b is located on the side of the functional module 101 facing the installation space 10a.

[0054] At least a portion of the first fitting 20 passes through the installation space 10a and electrically connects the electrical connection area 10b of the two energy storage towers 10, so that the individual energy storage towers 10 in a set of energy storage towers 10 are connected in series.

[0055] See Figure 5 The multiple energy storage towers 10 within the dashed box together form an energy storage tower group 500.

[0056] Each energy storage tower 10 has a standardized structure, meaning that each energy storage tower 10 has the same electrical layout and parameters as well as the same structural layout and parameters. This allows each energy storage tower 10 to be installed in any location during the installation of the energy storage tower group 500, without needing to be installed in a specific location. Instead, each energy storage tower 10 can be installed in any location, and the positions of each energy storage tower 10 can be interchanged arbitrarily.

[0057] The specific type of functional module 101 is not limited, such as power module 220, battery device 100, etc.

[0058] The specific number of energy storage towers 10 in the energy storage tower group 500 is not limited, for example, three, four, five, six, seven, eight, etc.

[0059] The number of energy storage tower groups in an energy storage device is unlimited, such as one, two, three, four, five, six, etc.

[0060] Functional module 101 is electrically connected to other functional modules 101 in the same energy storage tower 10, or to functional modules 101 in other energy storage towers 10, through its electrical connection area 10b. Current flows in and out of functional module 101 through electrical connection area 10b.

[0061] It is understood that at least one electrical connection area 10b in an energy storage tower 10 is electrically connected to the electrical connection area 10b of other energy storage towers 10 via a first fitting 20.

[0062] At least a portion of the electrical connection area 10b is located on the side of the functional module 101 facing the installation space 10a, which helps to reduce the distance between the electrical connection areas 10b in the different energy storage towers 10 and to reduce the size of the first fitting 20 connecting the electrical connection areas 10b of the different energy storage towers 10.

[0063] In this embodiment of the energy storage device, by having each energy storage tower 10 surround and form an installation space 10a, the energy storage towers 10 do not need to be arranged in a single straight line. This helps to reduce the three-dimensional dimensions required for arranging the energy storage device, improves the flexibility of the energy storage device arrangement, improves space utilization, and reduces the construction cost of the site for arranging the energy storage device. The electrical connection area 10b faces the interior of the installation space 10a, which helps to reduce the size of the first fitting 20. At the same time, it makes it easier for workers to perform maintenance from the side of the energy storage tower 10 away from the installation space 10a without being disturbed by the first fitting 20.

[0064] The specific number of functional modules 101 in the energy storage tower 10 is not limited. In some embodiments, the number of functional modules 101 in the energy storage tower 10 is one; in other embodiments, the number of functional modules 101 in the energy storage tower 10 is multiple.

[0065] In some embodiments where the number of functional modules 101 in the energy storage tower 10 is multiple, the multiple functional modules 101 in the energy storage tower 10 are stacked along a first direction in order to reduce the footprint of the energy storage tower 10 in the first direction.

[0066] In some embodiments, the first direction is the vertical direction.

[0067] It is understandable that the type and specific model of the functional modules 101 in each energy storage tower 10 can be the same or different.

[0068] In some embodiments, the functional modules 101 in each energy storage tower 10 are all power modules 220 of the same type. Thus, the electrical connection area 10b is located in the same position of the functional modules 101, which is more conducive to the connection of the first fitting 20.

[0069] In some embodiments, see Figure 5 The energy storage towers 10 are arranged at intervals to form a passage for staff to enter and exit the installation space 10a for maintenance.

[0070] In some embodiments, see Figure 5 , Figure 7 , Figures 11 to 13 The energy storage tower 10 in the energy storage tower group 500 includes a first tower 11 and a plurality of second towers 12. The plurality of second towers 12 are arranged in two rows along a second direction and the second towers 12 in each row are arranged along a third direction. The second direction and the third direction intersect each other. The first tower 11 is located on one side of the two rows of second towers 12 along the third direction to jointly enclose and form an installation space 10a. The electrical connection area 10b of the first tower 11 is located on one side of it along the third direction. The electrical connection areas 10b of the two rows of second towers 12 are opposite each other along the second direction.

[0071] Understandably, the electrical connection area 10b of the first tower 11 is located on its side closest to the second tower 12.

[0072] This helps to reduce the size required for the energy storage device to be arranged along the third direction; the two rows of second towers 12 help to make fuller use of the space along the second direction and improve the space utilization rate; each energy storage tower 10 has a part away from the installation space 10a so that the staff can carry out maintenance without entering the installation space 10a.

[0073] It is understood that the space between the first tower 11 and the second tower 12, and the space between the two rows of second towers 12, together form at least a portion of the installation space 10a.

[0074] It should be noted that the first tower 11 and the second tower 12 are the same type of energy storage tower 10, and the only difference is their location.

[0075] In some embodiments, see Figure 5 The length direction of the first tower 11 is along the second direction, which is conducive to making better use of the space along the second direction and improving the space utilization rate.

[0076] The length direction of the first tower 11 refers to the length direction of the projection formed by the first tower 11 along the first direction.

[0077] In some embodiments, see Figure 5 The width direction of the second tower 12 is along the second direction, which helps to reduce the space occupied by the two rows of second towers 12 along the second direction.

[0078] In some embodiments, see Figure 5 , Figure 7 and Figure 8 The first fitting 20 includes a first sub-fitting 21 and a second sub-fitting 22. The first sub-fitting 21 connects the first tower 11 and the second tower 12, and the second sub-fitting 22 connects the two second towers 12.

[0079] The first sub-fitting 21 connects at least one electrical connection area 10b in the first tower 11 to at least one electrical connection area 10b in the second tower 12; the second sub-fitting 22 connects at least one electrical connection area 10b in the second tower 12 to at least one electrical connection area 10b in another second tower 12.

[0080] In some embodiments, see Figure 5 The electrical connection area 10b in the first column of the second tower 12 is located on the side of the second tower 12 closer to the first tower 11 along the third direction, and the second tower 12 closest to the first tower 11 in the column is connected to the first tower 11 through the first sub-fitting 21. The electrical connection area 10b in the second column of the second tower 12 is located on the side of the second tower 12 away from the first tower 11 along the third direction.

[0081] It should be noted that the first column second tower 12 and the second column second tower 12 are used to distinguish the two columns of energy storage towers 10, rather than to indicate that the two columns of energy storage towers 10 have specific positions relative to the first tower 11.

[0082] This helps to reduce the size of the first sub-fitting 21, reducing the risk of interference between the arrangement of the first sub-fitting 21 and the second tower 12 in the second row; it also helps to arrange the two rows of second towers 12 using the same type of energy storage tower 10, reducing the cost of the energy storage device.

[0083] In some embodiments, see Figure 5 The electrical connection area 10b of the first tower 11 is located on the side of the first tower 11 away from the first column of the second tower 12 along the second direction.

[0084] This allows the first tower 11 and the second tower 12 to be arranged using the same type of energy storage tower 10, thus reducing the cost of the energy storage device.

[0085] In some embodiments, see Figure 14 and Figure 15 The first fitting 20 includes a first conductive stranded wire 23 and at least two first connectors 24. Each end of the first conductive stranded wire 23 is connected to a first connector 24, and the first connectors 24 are fixed to the electrical connection area 10b.

[0086] Understandably, the first conductive strand 23 is flexible and can be bent as needed to better adapt to the electrical connection area 10b in different locations.

[0087] The first conductive strand 23 is conductive, and the specific material used is not limited, such as copper, aluminum alloy, etc.

[0088] Understandably, the first conductive strand 23 is suspended so that it does not come into contact with the ground under the influence of gravity.

[0089] In some embodiments, the first conductive strand 23 is in a straightened state to reduce the degree of bending of the first conductive strand 23 under the action of gravity, thereby reducing the probability of the first conductive strand 23 coming into contact with other objects in the energy storage device; at the same time, it makes the first conductive strand 23 not require other devices to support it.

[0090] It is understandable that different lengths of the first conductive stranded wire 23 can be used depending on the different spacing between different energy storage towers 10.

[0091] In some embodiments, the first conductive strand 23 extends in a straight line; in one embodiment, the first conductive strand 23 extends in a curved direction. This facilitates adaptation to different energy storage tower arrangements and ensures that the air clearance between the various energy storage towers 10 meets requirements.

[0092] In some embodiments, see Figure 5 In the two second towers 12 connected by the second sub-fitting 22, the second tower 12 belonging to the second column is located on the side of the second tower 12 belonging to the first column along the third direction closer to the first tower 11.

[0093] That is, in the second tower 12 of the first column and the second tower 12 of the second column, which are offset from each other by a third party, the respective electrical connection areas 10b move closer to each other along the third party.

[0094] This helps to reduce the size of the second sub-fitting 22, saves the space required for the second sub-fitting 22, makes the energy storage device more compact, and reduces the probability of the second sub-fitting 22 interfering with other objects.

[0095] The electrical connection region 10b of the second tower 12 in the first column is offset from the electrical connection region 10b of the second tower 12 in the second column, which is opposite to it along the second direction, in the third direction.

[0096] Understandably, the multiple energy storage towers 10 in the energy storage device can be arranged as a single group or as multiple groups.

[0097] It is understood that in embodiments where the energy storage device includes multiple sets of energy storage towers 10, the sets of energy storage towers 10 are spaced apart.

[0098] In some embodiments where the number of energy storage tower groups 500 is multiple, see [reference]. Figure 5 and Figure 11 The energy storage device also includes a second fitting 30, which is electrically connected to each group of energy storage towers 10.

[0099] In this way, the second fitting 30 connects the energy storage towers 10 in series, making the number and arrangement of the energy storage towers 10 more diverse.

[0100] In some embodiments, see Figure 11 The second fitting 30 includes a third sub-fitting 31, and the first tower 11 of at least two sets of energy storage towers 10 is arranged along a second direction and the two first towers 11 are connected by the third sub-fitting 31.

[0101] Thus, by electrically connecting the first tower 11 in different groups of energy storage towers 10, the series connection between different groups of energy storage towers 10 is achieved.

[0102] In some embodiments, the third sub-fitting 31 extends in a straight line along the second direction to reduce the size of the third sub-fitting 31 in the second direction.

[0103] In some embodiments where the first direction is vertical, at least a portion of the third sub-fitting 31 is raised upwards. This is beneficial for increasing the electrical connection distance between the first towers 11 connected to the third sub-fitting 31 within a limited third-direction spacing, and for reducing the probability of the third sub-fitting 31 interfering with other objects in the vertical direction.

[0104] In some embodiments, see Figure 11 The third sub-fitting 31 includes a second conductive stranded wire 311 and at least two second connectors. Each end of the second conductive stranded wire 311 is connected to a second connector, and the second connectors are fixed to the first tower 11.

[0105] Understandably, the second conductive strand 311 is flexible and can be bent as needed to better adapt to the first tower 11 in different locations.

[0106] The second conductive strand 311 is conductive, and the specific material used for it is not limited, such as copper, aluminum alloy, etc.

[0107] Understandably, the first conductive strand 23 is suspended so that it does not come into contact with the ground under the influence of gravity.

[0108] In some embodiments, see Figure 5 and Figure 12 The second fitting 30 includes a fourth sub-fitting 32. At least two sets of energy storage towers 10 are arranged along a second direction. The fourth sub-fitting 32 connects the second tower 12 of the two sets of energy storage towers 10 to the end away from the first tower 11 along a third direction.

[0109] Thus, by electrically connecting the second tower 12 in different groups of energy storage towers 10 through the fourth sub-fitting 32, the series connection between different groups of energy storage towers 10 is realized; at the same time, it is beneficial for staff to carry out maintenance between the two groups of energy storage towers 10 without being easily disturbed by the fourth sub-fitting 32 during the maintenance process.

[0110] In some embodiments, see Figure 17 The fourth sub-fitting 32 includes a conductive conduit 321, an insulating fastener 322, and at least two flexible strips 323. The flexible strips 323 are connected to the second tower 12. Both ends of the conductive conduit 321 are connected to one flexible strip 323, and the insulating fastener 322 connects the conductive conduit 321 to the second tower 12.

[0111] The flexible busbar 323 is flexible to adapt to different installation positions and the arrangement position of the second tower 12; the conductive conduit 321 is rigid, which helps to ensure the overall structural strength of the fourth sub-fitting 32 and reduces the risk of the fourth sub-fitting 32 bending and coming into contact with other objects under the action of gravity. The insulating fastener 322 ensures that the conductive conduit 321 remains stable. The insulating fastener 322 is insulating so that current is not directly transmitted to the second tower 12 through the conductive conduit 321.

[0112] In some embodiments, see Figure 8 , Figure 9 and Figure 10 The energy storage tower 10 also includes an equalizing ring 103 and a first electrical connector 102. The equalizing ring 103 is located on at least a portion of the periphery of the functional module 101 of the energy storage tower 10. The first electrical connector 102 connects the equalizing ring 103 to the electrical connection area 10b. The energy storage device also includes a third fitting 40, which connects the equalizing rings 103 of two adjacent energy storage towers 10.

[0113] The first electrical connector 102 enables the various functional modules 101 in the same energy storage tower 10 to be connected in series.

[0114] The equalizing ring 103 refers to a ring-shaped structural component that improves the voltage distribution of the insulator string. It is used to evenly distribute the high-voltage electric field around the energy storage tower 10 and reduce the potential difference between different parts of the ring-shaped structural component.

[0115] In this way, by taking advantage of the ring-shaped nature of the equalizing ring 103, the third fitting 40 is connected to the equalizing ring 103. This allows for more flexible adjustment of the connection position of the third fitting 40, reduces the adverse effects on the arrangement of the third fitting 40 caused by the positional limitation of the electrical connection area 10b between the two energy storage towers 10, and helps to reduce the size of the third fitting 40.

[0116] In some embodiments, see Figure 6 and Figure 8 The equalizing ring 103 includes multiple arc-shaped rods 1032 and a fourth fitting 1031. The multiple arc-shaped rods 1032 are spaced apart from each other along the circumferential direction of the equalizing ring 103. The fourth fitting 1031 connects two adjacent arc-shaped rods 1032. This facilitates the adjustment of the arrangement of the equalizing ring 103 to accommodate the installation of the functional module 101.

[0117] In some embodiments, the fourth fitting 1031 includes a fourth conductive strand that is flexible in order to reduce the installation accuracy requirements of the individual arcuate rods 1032.

[0118] The specific material of the fourth conductive strand is not limited, such as copper, aluminum alloy, etc.

[0119] It is understandable that the current can flow from the equalizing ring 103 to the first electrical connector 102, or the current can flow from the first electrical connector 102 to the equalizing ring 103.

[0120] It is understandable that when the energy storage towers 10 in the energy storage device are of the same type, the equalizing rings 103 of each energy storage tower 10 can be in the same position in the first direction, and the electrical connection areas 10b of each energy storage tower 10 can be in the same position in the first direction.

[0121] In some embodiments, see Figure 5 and Figure 7 The third fitting 40 includes a fifth sub-fitting 41, which connects the equalizing rings 103 of the two second towers 12 that are opposite each other along the second direction.

[0122] In this way, the purpose of connecting the two second towers 12 in series along the second direction is achieved, and the equalizing rings 103 of the two second towers 12 are in the same position along the first direction, which is beneficial to reducing the size of the fifth sub-fitting 41.

[0123] In some embodiments, see Figures 11 to 13 The third fitting 40 includes a sixth sub-fitting 42, which connects the equalizing rings 103 of the two second towers 12 that are opposite each other along the third direction.

[0124] In this way, the purpose of connecting two second towers 12 in the same column along the third direction is achieved. When the second towers 12 are of the same type, the equalizing rings 103 of the two second towers 12 are in the same position along the first direction, which is beneficial to reducing the size of the sixth sub-fitting 42.

[0125] In some embodiments, see Figure 16 The third fitting 40 includes a third conductive strand 43 and at least two conductive clamps. The two ends of the third conductive strand 43 are respectively connected to a conductive clamp, and the equalizing ring 103 is inserted into the conductive clamp.

[0126] The conductive clamp forms a through positioning space, and the equalizing ring 103 passes through the positioning space. The size of the positioning space can be adjusted so that the inner wall of the positioning space can fit or separate from the equalizing ring 103, and the preload between the conductive clamp and the equalizing ring 103 can be adjusted.

[0127] Thus, by adjusting the preload between the conductive clamp and the equalizing ring 103, the conductive clamp can move on the equalizing ring 103, which makes it easy to adjust and fix the position of the third fitting 40 as needed, and helps to reduce the requirements for installation accuracy.

[0128] The specific method for adjusting the preload between the conductive clamp and the equalizing ring 103 is not limited; for example, it can be adjusted by bolts.

[0129] Understandably, the third conductive strand 43 is flexible and can be bent as needed to better adapt to the equalizing ring 103 in different positions.

[0130] The third conductive strand 43 is conductive, and the specific material used for it is not limited, such as copper, aluminum alloy, etc.

[0131] Understandably, the third conductive strand 43 is suspended so that it does not come into contact with the ground under the influence of gravity.

[0132] In some embodiments, see Figure 5 and Figure 12 The position of the third fitting 40 connected to the equalizing ring 103 is located on the side of the equalizing ring 103 close to the other equalizing ring 103 connected to the third fitting 40.

[0133] This helps to further reduce the size of the third fitting 40 and lowers the risk of interference between the arrangement of the third fitting 40 and other devices in the energy storage device.

[0134] In a single energy storage tower 10 comprising multiple functional modules 101, the electrical connection regions 10b of each functional module 101 are arranged at intervals along a first direction. In some embodiments where the energy storage tower 10 comprises multiple functional modules 101, see [reference needed]. Figure 9 and Figure 10 Multiple functional modules 101 are stacked along a first direction. The energy storage tower 10 also includes a second electrical connector 104, which extends along the first direction to connect two adjacent functional modules 101 along the first direction so that the functional modules 101 in the energy storage tower 10 are connected in series with each other. An equalizing ring 103 surrounds at least a portion of the periphery of the functional module 101 along the first direction.

[0135] In this way, multiple functional modules 101 can be connected in series through the first electrical connector 102, the second electrical connector 104 and the equalizing ring 103.

[0136] In some embodiments, see Figure 8 The equalizing ring 103 is located at the first end of the functional module 101 along the first direction in the energy storage tower 10, and is located at the end of the functional module 101 away from other functional modules 101. The first fitting 20 is connected to the functional module 101 at the second end along the first direction in the energy storage tower 10.

[0137] This forms a conductive path for the first fitting 20, the electrical connector 102, the equalizing ring 103, and the third fitting 40.

[0138] This allows the current to flow through each functional module 101 in the energy storage tower 10 at once; reduces the probability of the first fitting 20 and the third fitting 40 interfering with each other in the first direction; and ensures that the electrical connection areas 10b of the functional modules 101 connected to the first fitting 20 are roughly in the same position in the first direction, which helps to reduce the size of the first fitting 20.

[0139] In some embodiments, see Figure 9 and Figure 10 The first direction is vertical, and the equalizing ring 103 is located at the highest position of the energy storage tower 10.

[0140] This further reduces the probability of interference between the third fitting 40 and other objects in the energy storage device, and improves the utilization rate of space in the vertical direction.

[0141] In some embodiments where the third fitting 40 includes a third conductive strand 43, referring to the figures, at least a portion of the third conductive strand 43 is raised upward.

[0142] This increases the electrical connection distance between the third fitting 40 and the second tower 12, and further reduces the probability of the third fitting 40 interfering with other objects in the vertical direction.

[0143] In some embodiments, in two adjacent energy storage towers 10 along the direction of current flow, the current direction of one tower is from the equalizing ring 103 to the electrical connector 102, and the current direction of the other tower is from the electrical connector 102 to the equalizing ring 103.

[0144] This allows the first fitting 20 to be connected to the electrical connection area 10b of the two energy storage towers 10 that are in the same position in the first direction, and allows the third fitting 40 to be connected to the equalizing ring 103 of the two energy storage towers 10 that are in the same position in the first direction. This is beneficial because the two ends of the first fitting 20 and the two ends of the third fitting 40 do not need to be offset in the first direction, thereby reducing the size of the first fitting 20 and the second fitting 30.

[0145] In some embodiments where the first direction is vertical, see [reference] Figure 9 and Figure 10 The energy storage tower 10 with current flowing from the equalizing ring 103 to the electrical connector 102 is the downlink tower 14, and the energy storage tower 10 with current flowing from the electrical connector 102 to the equalizing ring 103 is the uplink tower 13. The first tower 11 can be either the uplink tower 13 or the downlink tower 14, and a portion of the second tower 12 is the uplink tower 13, while a portion of the second tower 12 is the downlink tower 14.

[0146] In some embodiments where the equalizing ring 103 is located at the highest position of the energy storage tower 10, see [reference]. Figure 5 and Figure 16The fifth sub-fitting 41 connects the equalizing rings 103 of the two first towers 11.

[0147] This makes it easier for the fifth sub-fitting 41 to obstruct the activities of staff between the two adjacent sets of energy storage towers 10.

[0148] In some embodiments where the first direction is vertical, see [reference] Figures 8 to 10 The functional module 101 includes a housing 1011, a first DC bus 1012 and a second DC bus 1013. The first DC bus 1012 and the second DC bus 1013 extend at least partially out of the housing 1011 and together form an electrical connection area 10b. The first DC bus 1012 and the second DC bus 1013 are arranged in a horizontal direction.

[0149] Of the first DC bus 1012 and the second DC bus 1013, one is the positive terminal and the other is the negative terminal.

[0150] Thus, the first DC bus 1012 and the second DC bus 1013 are arranged horizontally, making it less likely for the first fitting 20, which is compatible with one of them, to come into contact with the other or other objects in the energy storage device under the influence of gravity.

[0151] Understandably, current flows into the components in the housing 1011 through one of the first DC bus 1012 and the second DC bus 1013, and then flows out of the functional module 101 through the other.

[0152] In some embodiments, see Figure 8 , Figure 14 and Figure 15 The functional module 101 also includes an adapter 1014, which connects one of the first DC bus 1012 and the second DC bus 1013 to the first fitting 20. One end of the adapter 1014 away from the housing 1011 extends toward another energy storage tower 10.

[0153] This helps to reduce the bending of the first fitting 20 in order to connect different energy storage towers 10, and facilitates the installation of the first fitting 20.

[0154] It is understandable that in the functional module 101 that connects the first hardware 20, one of the first DC bus 1012 and the second DC bus 1013 is connected to one of the first electrical connector 102 and the second electrical connector 104, and the other is connected to the adapter 1014.

[0155] In some embodiments, the adapter 1014 extends at an angle to the surface of the housing 1011, with the angle ranging from 30° to 60°, so that one end of the adapter 1014 away from the housing 1011 extends toward another energy storage tower 10.

[0156] The specific tilt angle can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0157] In some embodiments where the first direction is vertical, see [reference] Figure 9 The vertical distance between the electrical connection area 10b and the bottom of the functional module 101 is the first height dimension, and the vertical dimension of the functional module 101 is the second height dimension. The proportion of the first height dimension to the second height dimension ranges from 30% to 70%.

[0158] See Figure 9 The first height dimension is L1, the second height dimension is L2, and 0.3*L2≤L1≤0.7*L2.

[0159] This helps reduce the probability that the first fitting 20 connected to the electrical connection area 10b will come into contact with the ground under gravity, and also helps to raise the height of the first fitting 20, reducing the space occupied by the maintenance passage.

[0160] The specific ratio of the first height dimension to the second height dimension can be 30%, 40%, 50%, 60%, 70%, etc.

[0161] The specific method for obtaining the ratio of the first height dimension to the second height dimension is not limited. For example, the second height dimension can be obtained by measuring the dimension of the functional module 101 along the first direction with a ruler, and the first height dimension can be obtained by measuring the distance between the bottom of the functional module 101 and the electrical connection area 10b with a ruler. The ratio of the first height dimension to the second height dimension can be obtained by calculating the quotient of the first height dimension and the second height dimension.

[0162] The following are three specific embodiments of energy storage devices, and the energy storage devices in the three embodiments all meet the following: the first direction is vertical, each energy storage tower 10 has a standardized structure, the energy storage tower 10 includes multiple functional modules 101, the multiple functional modules 101 are stacked along the first direction, the equalizing ring 103 is disposed in the first end of the functional module 101 along the first direction in the energy storage tower 10, and is located at the end of the functional module 101 away from other functional modules 101, the first fitting 20 connects to the functional module 101 along the second end of the first direction in the energy storage tower 10, the equalizing ring 103 is located at the highest position of the energy storage tower 10, and the third fitting 40 is connected to the equalizing ring 103 at a position located on the side of the equalizing ring 103 close to the other equalizing ring 103 connected to the third fitting 40. Functional module 101 includes a housing 1011, a first DC bus 1012, a second DC bus 1013, and an adapter 1014. The first DC bus 1012 and the second DC bus 1013 extend at least partially beyond the housing 1011 and together form an electrical connection area 10b. The first DC bus 1012 and the second DC bus 1013 are arranged horizontally. The adapter 1014 connects one of the first DC bus 1012 and the second DC bus 1013 to a first fitting 20. One end of the adapter 1014, away from the housing 1011, extends towards another energy storage tower 10. The distance between the electrical connection area 10b and the bottom of functional module 101 along the height direction is a first height dimension, and the vertical dimension of functional module 101 is a second height dimension. The proportion of the first height dimension to the second height dimension ranges from 30% to 70%. The energy storage tower group 500 includes a first tower 11 and a plurality of second towers 12. The plurality of second towers 12 are arranged in two rows along a second direction and the second towers 12 in each row are arranged along a third direction. The first direction, the second direction and the third direction intersect each other. The first tower 11 is located on one side of the two rows of second towers 12 along the third direction to jointly enclose and form an installation space 10a. The electrical connection area 10b of the first tower 11 is located on its side along the third direction. The electrical connection areas 10b of the two rows of second towers 12 are opposite each other along the second direction. The electrical connection area 10b of the second tower 12 in the first row is located on the side of the second tower 12 along the third direction closer to the first tower 11. The second tower 12 in the row closest to the first tower 11 is connected to the first tower 11 through a first sub-fitting 21. The electrical connection area 10b of the second tower 12 in the second row is located on the side of the second tower 12 along the third direction away from the first tower 11. The multiple energy storage towers 10 are divided into two groups spaced apart along the second direction. In the first group, the current direction of the first tower 11 is from the equalizing ring 103 to the electrical connector 102, and in the second group, the current direction of the first tower 11 is from the electrical connector 102 to the equalizing ring 103.

[0163] Example 1 See Figure 5 and Figure 7In each group of energy storage towers 10, the current direction of one row of second towers 12 flows from the equalizing ring 103 to the second electrical connector 104 and the first electrical connector 102, while the current direction of the other row of second towers 12 flows from the first electrical connector 102 and the second electrical connector 104 to the equalizing ring 103. The electrical connection area 10b of the first tower 11 is connected to the electrical connection area 10b of one row of second towers 12 via a first sub-fitting 21. Two second towers 12 facing each other along the second direction are connected to their respective equalizing rings 103 via a fifth sub-fitting 41. The second sub-fitting 22 connects the lowest electrical connection areas 10b of two second towers 12 that are staggered along the third direction in the two rows of second towers 12. The fourth sub-fitting 32 connects the lowest electrical connection areas 10b of the second tower 12 in the two groups of energy storage towers 10 that are furthest from the first tower 11 along the third direction. The equalizing rings 103 of the two first towers 11 are respectively electrically connected to the outside.

[0164] Example 2 See Figure 11 In each group of energy storage towers 10, in each column of second towers 12, among two adjacent second towers 12 along the third direction, the current direction of one flows from the equalizing ring 103 to the first electrical connector 102 and the second electrical connector 104, and the current direction of the other flows from the second electrical connector 104 to the first electrical connector 102 and the equalizing ring 103. The current directions of two second towers 12 opposite each other along the second direction are the same. The electrical connection area 10b of the first tower 11 is connected to the electrical connection area 10b of one of the columns of second towers 12 via a first sub-fitting 21. In the same column of energy storage towers 10, a sixth sub-fitting 42 connects the equalizing rings 103 of two second towers 12 opposite each other along the third direction. The second sub-fitting 22 connects the lowest electrical connection areas 10b of two second towers 12 that are staggered along the third direction in the two columns of second towers 12. The first tower 11 of the two sets of energy storage towers 10 is arranged along the second direction, and the equalizing rings 103 of the two first towers 11 are connected by a third sub-fitting 31. The lowest electrical connection area 10b of the second tower 12 farthest from the first tower 11 in a row of second towers of a set of energy storage towers 10 is connected to the external current.

[0165] Example 3 See Figure 12 and Figure 13In each group of energy storage towers 10, in each column of second towers 12, among two adjacent second towers 12 along the third direction, the current direction of one is from the equalizing ring 103 to the first electrical connector 102 and the second electrical connector 104, and the current direction of the other is from the second electrical connector 104 and the first electrical connector 102 to the equalizing ring 103. The current directions of two second towers 12 opposite each other along the second direction are the same. The electrical connection area 10b of the first tower 11 is connected to the electrical connection area 10b of one of the columns of second towers 12 via a first sub-fitting 21. In the same column of energy storage towers 10, a sixth sub-fitting 42 connects the equalizing rings 103 of two second towers 12 opposite each other along the third direction. The second sub-fitting 22 connects the lowest electrical connection areas 10b of two second towers 12 that are staggered along the third direction in the two columns of second towers 12. The fourth sub-fitting 32 connects to the lowest electrical connection region 10b of the second tower 12, which is furthest from the first tower 11 along a third direction, in the two sets of energy storage towers 10. The equalizing rings 103 of the two first towers 11 are respectively electrically connected to the outside.

[0166] This application also provides an energy storage system 2000, including any of the energy storage devices in the foregoing embodiments, and a functional module 101 for releasing or replenishing electrical energy.

[0167] Thus, by adopting the energy storage device in the aforementioned embodiments, it is beneficial to reduce the footprint of the energy storage system 2000, improve the space utilization rate of the energy storage system 2000, and provide convenience for staff to carry out maintenance.

[0168] This application embodiment also provides a charging network 1000, including any of the energy storage devices in the foregoing embodiments, and a functional module 101 for releasing or replenishing electrical energy.

[0169] Thus, by adopting the energy storage device in the aforementioned embodiments, it is beneficial to reduce the footprint of the charging network 1000, improve the space utilization rate in the charging network 1000, and provide convenience for staff to carry out maintenance.

[0170] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0171] The above are merely preferred embodiments of this application and are not intended to limit the embodiments in this application. For those skilled in the art, the embodiments of this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. An energy storage device, characterized in that, include: An energy storage tower group includes multiple energy storage towers, each of which has a standardized structure. The energy storage towers in the energy storage tower group are arranged to form an installation space. Each energy storage tower includes a functional module, and the functional module is provided with an electrical connection area. At least a portion of the electrical connection area is located on the side of the functional module facing the installation space. A first fitting, at least a portion of which passes through the installation space and electrically connects the electrical connection areas of the two energy storage towers, so that the energy storage towers in the energy storage tower group are connected in series.

2. The energy storage device according to claim 1, characterized in that, The energy storage tower in the energy storage tower group includes a first tower and a plurality of second towers. The plurality of second towers are arranged in two columns along a second direction, and the second towers in each column are arranged along a third direction. The second direction and the third direction intersect each other. The first tower is located on one side of the two columns of second towers along the third direction to jointly enclose the installation space. The electrical connection area of ​​the first tower is located on its side along the third direction. The electrical connection areas of the two columns of second towers are opposite each other along the second direction. The first fitting includes a first sub-fitting and a second sub-fitting. The first sub-fitting connects the first tower and the second tower, and the second sub-fitting connects two second towers.

3. The energy storage device according to claim 2, characterized in that, The electrical connection area in the second tower of the first column is located on the side of the second tower closer to the first tower along the third direction, and the second tower closest to the first tower in the column is connected to the first tower through a first sub-fitting. The electrical connection area in the second tower of the second column is located on the side of the second tower away from the first tower along the third direction.

4. The energy storage device according to claim 3, characterized in that, In the two second towers connected by the second sub-fitting, the second tower belonging to the second column is located on the side of the second tower belonging to the first column that is closer to the first tower along the third direction.

5. The energy storage device according to any one of claims 2 to 4, characterized in that, The number of energy storage tower groups is multiple, and the energy storage device also includes a second fitting, which is electrically connected to each group of energy storage towers.

6. The energy storage device according to claim 5, characterized in that, The second fitting includes a third sub-fitting, wherein the first towers of at least two sets of energy storage towers are arranged along the second direction and the two first towers are connected by the third sub-fitting.

7. The energy storage device according to claim 5 or 6, characterized in that, The second fitting includes a fourth sub-fitting, and at least two sets of the energy storage towers are arranged along the second direction. The fourth sub-fitting connects the second tower in the two sets of energy storage towers that is away from the first tower along the third direction.

8. The energy storage device according to any one of claims 2 to 7, characterized in that, The energy storage tower further includes an equalizing ring and a first electrical connector. The equalizing ring is located on at least a portion of the periphery of the functional module. The first electrical connector connects the equalizing ring to the electrical connection area. The energy storage device further includes a third fitting that connects the equalizing rings of two adjacent energy storage towers.

9. The energy storage device according to claim 8, characterized in that, The third fitting includes a fifth sub-fitting, which connects the equalizing rings of the two second towers that are opposite each other along the second direction.

10. The energy storage device according to claim 8 or 9, characterized in that, The third fitting includes a sixth sub-fitting, which connects the equalizing rings of the two second towers that are opposite each other along the third direction.

11. The energy storage device according to any one of claims 8 to 10, characterized in that, The third fitting is connected to the equalizing ring at a position on the side of the equalizing ring that is close to the other equalizing ring to which the third fitting is connected.

12. The energy storage device according to any one of claims 8 to 11, characterized in that, The energy storage tower includes multiple functional modules stacked along a first direction. The energy storage tower also includes a second electrical connector extending along the first direction to connect two adjacent functional modules along the first direction, so that the functional modules in the energy storage tower are connected in series with each other. The equalizing ring surrounds at least a portion of the periphery of the functional module along the first direction.

13. The energy storage device according to claim 12, characterized in that, The equalizing ring is disposed at the first end of the functional module in the energy storage tower along the first direction, and is located at the end of the functional module away from the other functional modules. The first fitting is connected to the functional module in the energy storage tower along the second end of the first direction.

14. The energy storage device according to claim 13, characterized in that, The first direction is the vertical direction, and the equalizing ring is located at the highest position of the energy storage tower.

15. The energy storage device according to claim 13 or 14, characterized in that, In two adjacent energy storage towers along the direction of current flow, the current in one tower flows from the equalizing ring to the electrical connector, and the current in the other tower flows from the electrical connector to the equalizing ring.

16. The energy storage device according to any one of claims 1 to 15, characterized in that, The functional module includes a housing, a first DC bus and a second DC bus, the first DC bus and the second DC bus at least partially extending out of the housing and together forming the electrical connection area, the first DC bus and the second DC bus being arranged in a horizontal direction.

17. The energy storage device according to claim 16, characterized in that, The functional module also includes an adapter, which connects one of the first DC busbar and the second DC busbar to the first fitting. The end of the adapter away from the housing extends toward the other energy storage tower.

18. The energy storage device according to any one of claims 1 to 17, characterized in that, The vertical distance between the electrical connection area and the bottom of the functional module is the first height dimension, and the vertical dimension of the functional module is the second height dimension. The proportion of the first height dimension to the second height dimension ranges from 30% to 70%.

19. An energy storage system, characterized in that, Includes an energy storage device as described in any one of claims 1-18, wherein the functional module is used to release electrical energy or replenish electrical energy.

20. A charging network, characterized in that, Includes an energy storage device as described in any one of claims 1-18, wherein the functional module is used to release electrical energy or replenish electrical energy.

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