Energy storage system

Abstract

The embodiment of the utility model relates to the field of energy storage, and provides an energy storage system, which comprises a box body, an energy storage module, an energy storage module and a power supply module, the battery assemblies are located in the battery cabin, the battery assemblies are arranged at intervals in the first direction and extend in the second direction, the first direction is the length direction of the energy storage system, and the second direction is the width direction of the energy storage system; the battery cabin doors are opposite to the battery assemblies in the second direction, every two adjacent battery cabin doors are hinged to form a folding door, and only one side of each folding door is hinged to the box body. The embodiment of the utility model is at least beneficial to flexibly adjusting the area of the battery component exposed out of the battery cabin door and improving the portability of an operator.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the field of energy storage, and in particular to an energy storage system. Background Art

[0002] Large-scale chemical battery energy storage systems such as energy storage power stations, energy storage containers, and industrial and commercial energy storage have the characteristics of high battery component voltage, large number of cells, and large space occupied by battery components. At present, special containers are mostly used as containers for installing battery components and inverters. Energy storage containers are different from ordinary freight containers. Usually, it is necessary to consider the matching relationship between various components, such as the matching relationship between battery components and battery compartment doors, while considering the load-bearing capacity and the integration density of various components, in order to facilitate the installation or maintenance of various components. Utility Model Content

[0003] The disclosed embodiment provides an energy storage system, which at least facilitates flexible adjustment of the area of ​​the battery assembly exposed by the battery compartment door and improves the portability of the operator.

[0004] According to some embodiments of the present disclosure, on the one hand, an energy storage system is provided, comprising: a box body, wherein the box body has a battery compartment for accommodating a battery assembly; a plurality of the battery assemblies located in the battery compartment, and the plurality of the battery assemblies are arranged at intervals along a first direction and extend along a second direction, the first direction being the length direction of the energy storage system, and the second direction being the width direction of the energy storage system; a plurality of battery compartment doors, the battery compartment doors being opposite to the battery assemblies along the second direction, wherein two adjacent battery compartment doors are hinged to form a folding door, and only one side of the folding door is hinged to the box body.

[0005] In some embodiments, the two battery compartment doors constituting the folding door are respectively a first battery compartment door and a second battery compartment door, one side of the first battery compartment door is hinged to the box body, and the other side of the first battery compartment door is hinged to the second battery compartment door; wherein, the first battery compartment door is hinged to the box body through a first rotating axis, and the first battery compartment door and the second battery compartment door are hinged through a second rotating axis, the first battery compartment door can rotate around the first rotating axis, the second battery compartment door can rotate around the second rotating axis, and the second battery compartment door can be detached from the box body as a whole.

[0006] In some embodiments, the two battery compartment doors constituting the folding door are respectively a first battery compartment door and a second battery compartment door, one side of the first battery compartment door is hinged to the box body, and the other side of the first battery compartment door is hinged to the second battery compartment door; wherein, the second battery compartment door has a first side hinged to the first battery compartment door, and a second side opposite to the first side along the width direction of the second battery compartment door, a pulley is provided at the bottom of the second side along a third direction, a slide groove is provided at the bottom of the box body along the third direction, the pulley is provided in the slide groove, the second battery compartment door can not only rotate around the first side, but also slide along the slide groove, and the third direction is the height direction of the energy storage system.

[0007] In some embodiments, a plurality of the battery compartment doors are located only on one side of the battery assembly along the second direction.

[0008] In some embodiments, the box body includes a plurality of edges and a plurality of columns that constitute a storage space within the box body, the columns are located between two of the edges that are opposite to each other along a third direction, and the folding door is hinged to the columns on only one side, and the third direction is the height direction of the energy storage system.

[0009] In some embodiments, along the first direction, the spacing between the battery assembly closest to the hinge between the battery compartment door and the column and another battery assembly adjacent thereto is a first spacing, and two adjacent battery assemblies with a spacing of the first spacing are opposite different folding doors, and the spacing between other adjacent battery assemblies is a second spacing, and the first spacing is greater than or equal to the second spacing.

[0010] In some embodiments, the first spacing is 60 mm to 150 mm, and the second spacing is 30 mm to 150 mm.

[0011] In some embodiments, one of the battery compartment doors faces N of the battery assemblies along the second direction, and one of the folding doors faces 2N of the battery assemblies along the second direction, where N is a rational number greater than or equal to 1.

[0012] In some embodiments, different folding doors correspond to different numbers of battery assemblies, or different folding doors correspond to the same number of battery assemblies.

[0013] In some embodiments, the opening directions of adjacent folding doors are the same or opposite.

[0014] The technical solution provided by the embodiments of the present disclosure has at least the following advantages:

[0015] On the one hand, the folding door is hinged on the box body, and the hinge between the folding door and the box body will also occupy the layout space in the box body. Since two adjacent battery compartment doors are hinged to form a folding door, and only one side of the folding door is hinged to the box body, only one of the two adjacent battery compartment doors needs to be hinged to the box body. In other words, it is not necessary for each battery compartment door to be hinged to the box body, and the relative fixation between each battery compartment door and the box body can be achieved, which is conducive to reducing the hinge area between the battery compartment door and the box body by means of the design of the folding door, so as to reduce the space reserved in the box body for the hinge of the battery compartment door, thereby facilitating the increase of the space in the box body for installing the battery assembly, so as to further improve the integration density of the battery assembly. Moreover, the design of the two adjacent battery compartment doors being hinged to form a folding door is conducive to flexibly adjusting the degree of opening of the folding door by means of the opening method of the folding door, thereby flexibly adjusting the size of the area of ​​the single battery assembly exposed by the folding door or flexibly adjusting the number of battery assemblies exposed by the folding door, so as to improve the convenience of the operator when installing, inspecting or repairing the battery assembly.

[0016] On the other hand, the battery assemblies are only arranged at intervals along the first direction, and only one battery assembly is arranged along the second direction, which is beneficial to increasing the volume of a single battery assembly. Firstly, the number of battery cells that the battery assembly itself can be increased, thereby increasing the capacity of the battery assembly itself. Secondly, the number of battery assemblies required to be arranged in the battery compartment can be reduced to reduce the layout space left for the intervals between adjacent battery assemblies in the battery compartment, which is beneficial to further increase the total capacity of several battery assemblies that can be accommodated in the battery compartment, thereby improving the energy storage density of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings, which do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and the figures in the drawings do not constitute a scale limitation unless otherwise stated. In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the traditional technology, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a first partial top view structure of an energy storage system provided in an embodiment of the present disclosure;

[0019] Figure 2 A second partial top view structural diagram of the energy storage system provided in an embodiment of the present disclosure;

[0020] Figure 3A schematic diagram of a partial three-dimensional structure of an energy storage system provided in an embodiment of the present disclosure;

[0021] Figure 4 A third partial top view structural diagram of the energy storage system provided in an embodiment of the present disclosure;

[0022] Figure 5 A fourth partial top view structural diagram of the energy storage system provided in an embodiment of the present disclosure;

[0023] Figure 6 A fifth partial top view structural schematic diagram of the energy storage system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0024] As can be seen from the background technology, the matching relationship between the battery assembly and the battery compartment door needs to be improved.

[0025] After analysis, it was found that the battery components in the energy storage system have the following layout situations: in the battery compartment used to accommodate the battery components, multiple battery components are arranged in an array along the length direction and the width direction of the battery compartment. For example, along the length direction of the battery compartment, multiple battery components are arranged at intervals, and along the width direction of the battery compartment, two battery components are arranged at intervals. In other words, the same battery component has another battery component with the same arrangement direction along the length direction of the battery compartment, and another battery component with the same arrangement direction along the width direction of the battery compartment. Among them, the battery compartment can be a storage space in a container, and the width direction of the battery compartment is the width direction of the container.

[0026] In this way, firstly, more battery assemblies are arranged in the limited layout space of the battery compartment. On the one hand, due to the limitation of the battery compartment, the increase in the volume of the battery assembly itself is restricted, so that the number of battery cells that the battery assembly itself can contain is limited, and the increase in the capacity of the battery assembly itself is also restricted; on the other hand, since there are intervals between different battery assemblies, more layout space in the battery compartment is left for the intervals between adjacent battery assemblies, which will also limit the increase in the volume of a single battery assembly.

[0027] Secondly, when installing the battery components into the battery compartment, the container needs to be designed with doors on both sides along the width direction of the container to facilitate the installation of all the battery components into the container. Based on this, for any container, a certain amount of space needs to be reserved on both sides of the container along the width direction so that the battery compartment doors on both sides can be opened to install, inspect or repair the battery components or other components. Therefore, for any container, a certain amount of space needs to be reserved on both sides along the width direction for opening the battery compartment doors, which is not convenient for high-density arrangement of multiple containers.

[0028] In addition, the hinges between the battery hatch and the container body will also occupy the layout space in the container body. The more battery hatches are arranged, the less installation space there will be for battery components in the container.

[0029] The disclosed embodiment provides an energy storage system. On the one hand, the folding door is hinged on the box body, and the hinge between the folding door and the box body will also occupy the layout space in the box body. Since two adjacent battery compartment doors are hinged to form a folding door, and only one side of the folding door is hinged to the box body, only one of the two adjacent battery compartment doors needs to be hinged to the box body. In other words, it is not necessary for each battery compartment door to be hinged to the box body, and each battery compartment door can be relatively fixed between the box body, which is beneficial to reduce the area where the battery compartment door is hinged to the box body by means of the design of the folding door, so as to reduce the space reserved in the box body for the hinge with the battery compartment door, thereby facilitating the increase of the space in the box body for installing the battery assembly, so as to further improve the integration density of the battery assembly. Moreover, the design of the two adjacent battery compartment doors being hinged to form a folding door is beneficial to flexibly adjust the degree of opening of the folding door by means of the opening method of the folding door, thereby facilitating the flexible adjustment of the size of the area of ​​the single battery assembly exposed by the folding door or the flexible adjustment of the number of battery assemblies exposed by the folding door, so as to improve the convenience of the operator when installing, inspecting or repairing the battery assembly. On the other hand, the battery assemblies are only arranged at intervals along the first direction, and only one battery assembly is arranged along the second direction, which is beneficial to increasing the volume of a single battery assembly. Firstly, the number of battery cells that the battery assembly itself can be increased, thereby increasing the capacity of the battery assembly itself. Secondly, the number of battery assemblies required to be arranged in the battery compartment can be reduced to reduce the layout space left for the intervals between adjacent battery assemblies in the battery compartment, which is beneficial to further increase the total capacity of several battery assemblies that can be accommodated in the battery compartment, thereby improving the energy storage density of the energy storage system.

[0030] The following will describe the various embodiments of the present disclosure in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present disclosure, many technical details are provided in order to enable the reader to better understand the embodiments of the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the embodiments of the present disclosure can be implemented.

[0031] The present disclosure provides an energy storage system, which will be described in detail below with reference to the accompanying drawings.

[0032] refer to Figure 1 or Figure 2The energy storage system 100 includes: a box body 101, wherein the box body 101 has a battery compartment 111 for accommodating a battery assembly 102; a plurality of battery assemblies 102 located in the battery compartment 111, and the plurality of battery assemblies 102 are arranged at intervals along a first direction X and extend along a second direction Y, wherein the first direction X is the length direction of the energy storage system 100, and the second direction Y is the width direction of the energy storage system 100; a plurality of battery compartment doors 103, wherein the battery compartment doors 103 are directly opposite to the battery assembly 102 along the second direction Y, wherein two adjacent battery compartment doors 103 are hinged to form a folding door 104, and only one side of the folding door 104 is hinged to the box body 101.

[0033] in, Figure 1 A schematic diagram of a first partial top view structure of an energy storage system provided in an embodiment of the present disclosure; Figure 2 A second partial top view structural schematic diagram of the energy storage system provided in an embodiment of the present disclosure.

[0034] Two adjacent battery compartment doors 103 are hinged to form a folding door 104, and one of the two adjacent battery compartment doors 103 is hinged to the box body 101 on one side, and the other side is hinged to the other side, so that the two adjacent battery compartment doors 103 and the box body 101 can be relatively fixed, and only one side of the two adjacent battery compartment doors 103 is designed to be hinged to the box body 101. In this way, it is not necessary for each battery compartment door 103 to be hinged to the box body 101, which is conducive to reducing the area where the battery compartment door 103 is hinged to the box body 101 with the help of the design of the folding door 104, so as to reduce the space reserved in the box body 101 for the battery compartment door 103 to be hinged, thereby facilitating the increase of the space in the box body 101 for installing the battery assembly 102, so as to further improve the integration density of the battery assembly 102.

[0035] Moreover, only one side of the folding door 104 is hinged to the box body 101, and the other side of the folding door 104 can be flexibly moved relative to the box body 101. Based on the opening method of the folding door 104, the degree of opening of the folding door 104 can be flexibly adjusted, which is conducive to flexible adjustment of the size of the area of ​​a single battery assembly 102 exposed by the folding door 104 or flexible adjustment of the number of battery assemblies 102 exposed by the folding door 104, so as to improve the convenience of operators in installing, inspecting or repairing the battery assembly 102.

[0036] It is worth noting that the application scenario of the folding door 104 is: a plurality of battery assemblies 102 located in the battery compartment 111 are arranged at intervals along the first direction X and extend along the second direction Y, and the battery compartment door 103 is directly opposite to the battery assembly 102 along the second direction Y. In the application scenario, the battery assemblies 102 are arranged at intervals only along the first direction X, and only one battery assembly 102 is arranged along the second direction Y, which is conducive to increasing the volume of a single battery assembly 102. Firstly, the number of cells that can be contained in the battery assembly 102 itself can be increased, thereby increasing the capacity of the battery assembly 102 itself. Secondly, the number of battery assemblies 102 required to be arranged in the battery compartment 111 can be reduced, so as to reduce the layout space left in the battery compartment 111 for the intervals between adjacent battery assemblies 102, thereby facilitating further increasing the total capacity of the plurality of battery assemblies 102 that can be accommodated in the battery compartment 111, so as to improve the energy storage density of the energy storage system 100. In this application scenario, two adjacent battery compartment doors 103 are designed to be hinged to form a folding door 104, which is beneficial to further increase the space in the box 101 for installing the battery assembly 102, so as to further improve the integration density of the battery assembly 102, thereby helping to further improve the energy storage density of the energy storage system 100.

[0037] The embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0038] In some embodiments, reference Figure 1 The two battery compartment doors 103 constituting the folding door 104 are respectively a first battery compartment door 113 and a second battery compartment door 123, one side of the first battery compartment door 113 is hinged to the box body 101, and the other side of the first battery compartment door 113 is hinged to the second battery compartment door 123; wherein, the first battery compartment door 113 is hinged to the box body 101 through a first rotating shaft 114, and the first battery compartment door 113 and the second battery compartment door 123 are hinged through a second rotating shaft 124, the first battery compartment door 113 can rotate around the first rotating shaft 114, the second battery compartment door 123 can rotate around the second rotating shaft 124, and the second battery compartment door 123 can be detached from the box body 101 as a whole.

[0039] It is worth noting that the second battery compartment door 123 can rotate 360° around the second rotating axis 124, which makes the opening method of the folding door 104 more flexible, allowing the operator to flexibly adjust the opening degree of the folding door 104 based on his own operating needs, thereby facilitating flexible adjustment of the size of the area of ​​a single battery assembly 102 exposed by the folding door 104 or flexible adjustment of the number of battery assemblies 102 exposed by the folding door 104, so as to improve the convenience of the operator in installing, inspecting or repairing the battery assembly 102.

[0040] In other embodiments, reference Figure 2The two battery compartment doors 103 constituting the folding door 104 are respectively a first battery compartment door 113 and a second battery compartment door 123. One side of the first battery compartment door 113 is hinged to the box body 101, and the other side of the first battery compartment door 113 is hinged to the second battery compartment door 123. The second battery compartment door 123 has a first side 123a hinged to the first battery compartment door 113, and a second side 123b opposite to the first side 123a along the width direction of the second battery compartment door 123. A pulley (shown in the figure) is provided at the bottom of the second side 123b along the third direction Z. A slide groove 134 is provided at the bottom of the box body 101 along the third direction Z. The pulley is provided in the slide groove 134. The second battery compartment door 123 can not only rotate around the first side 123a, but also slide along the slide groove 134. The third direction Z is the height direction of the energy storage system 100.

[0041] In some cases, reference Figure 2 The first battery compartment door 113 and the box body 101 may also be hinged via the first rotating shaft 114 , and the first battery compartment door 113 and the second battery compartment door 123 may also be hinged via the second rotating shaft 124 .

[0042] It is worth noting that the second battery compartment door 123 has two movement paths at the same time, the first movement path is to rotate around the first side 123a, and the second movement path is to slide along the third direction Z. The two movements exist at the same time, so that one side of the two battery compartment doors 103 of the folding door 104 along the second direction Y is fixed by the box body 101. In other words, one side of the first battery compartment door 113 and the second battery compartment door 123 will not be separated from the box body 101, which is conducive to strengthening the connection strength between the folding door 104 and the box body 101. In this way, when the wind force in the external environment where the energy storage system is located is too strong, , which can effectively reduce the probability of the folding door 104, especially the second battery compartment door 123, being deformed due to excessive wind force. Moreover, based on the two simultaneous movement paths of the folding door 104, when the folding door 104 is opened, the first battery compartment door 113 and the second battery compartment door 123 will move in an overlapping trend. In other words, one of the first battery compartment door 113 and the second battery compartment door 123 can block a certain amount of wind force for the other, so as to reduce the area of ​​the folding door 104 as a whole that needs to withstand the wind force and the wind pressure it withstands, thereby further reducing the probability of the folding door 104 being deformed due to excessive wind force.

[0043] In addition, the operator can still flexibly adjust the opening degree of the folding door 104 based on his own operating needs, so as to flexibly adjust the size of the area of ​​a single battery assembly 102 exposed by the folding door 104 or flexibly adjust the number of battery assemblies 102 exposed by the folding door 104, so as to improve the convenience for the operator to install, inspect or repair the battery assembly 102.

[0044] In the above various embodiments, a limit locking device is provided on the battery compartment door 103. When the battery compartment door 103 is opened, the battery compartment door 103, the battery compartment door hinge and the limit locking device can withstand a load of at least 0.6KN for a period of not less than 30 minutes.

[0045] In the various embodiments described above, the battery compartment door 103 is a fireproof door with a fire resistance time of not less than 1 hour.

[0046] It is worth noting that different battery compartment doors 103 can be located on different sides of the battery assembly 102 along the second direction Y, or on the same side of the battery assembly 102 along the second direction Y.

[0047] In some embodiments, reference Figure 1 and Figure 2 , the plurality of battery compartment doors 103 are only located at one side of the battery assembly 102 along the second direction Y. In other words, the folding doors 104 are all located at one side of the battery assembly 102 along the second direction Y.

[0048] In this way, the box 101 is designed to have a single-side door opening along the second direction Y. For any box 101, only the side of the box 101 that is hinged to the folding door 104 along the second direction Y needs to reserve a certain space so that the folding door 104 can be opened, and no space needs to be reserved on the other side of the box 101 that is not hinged to the folding door 104 along the second direction Y. In this way, two adjacent boxes 101 can be designed back to back. In other words, the sides of the two adjacent boxes 101 that are not hinged to the folding door 104 along the second direction Y can be closely arranged, and the opening degree of the folding door 104 in the two adjacent boxes 101 will not be affected, so that the interval between the two adjacent boxes 101 can be effectively shortened, which is conducive to arranging more boxes 101 in a limited layout space, so as to improve the arrangement density of multiple boxes 101.

[0049] In some embodiments, reference Figure 3 , Figure 3 A partial three-dimensional structural schematic diagram of the energy storage system provided in an embodiment of the present disclosure, wherein the box body 101 includes a plurality of prisms 121 and a plurality of columns 131 constituting a storage space within the box body 101, the column 131 being located between two prisms 121 opposite to each other along a third direction Z, and the folding door 104 is hinged to the column 131 on only one side, and the third direction Z is the height direction of the energy storage system 100.

[0050] It is worth noting that each battery compartment door 103 is provided with a column 131 at the hinge of the box body 101. The column 131 is not only used to strengthen the overall support strength of the box body 101 to prevent the box body 101 from deforming, but also used to realize the hinge connection between the battery compartment door 103 and the box body 101. Moreover, based on the design of the folding door 104, it is not necessary for each battery compartment door 103 to be hinged to the box body 101, which is conducive to reducing the hinge area of ​​the battery compartment door 103 and the box body 101 with the help of the design of the folding door 104, thereby facilitating the reduction of the number of columns 131, thereby facilitating the increase of the space in the box body 101 for installing the battery assembly 102, so as to further improve the integration density of the battery assembly 102.

[0051] In some examples, reference Figure 1 The box body 101 includes 12 edges 121, wherein 4 edges 121 extend along a first direction X, another 4 edges 121 extend along a second direction Y, and the remaining 4 edges 121 extend along a third direction Z. The 12 edges 121 can be respectively regarded as 12 edges of a rectangular parallelepiped.

[0052] In some embodiments, reference Figures 1 to 3 , along the first direction X, the spacing between the battery assembly 102 closest to the hinge of the battery compartment door 103 and the column 131 and another battery assembly 102 adjacent thereto is a first spacing L1, and two adjacent battery assemblies 102 with a spacing of the first spacing L1 are directly opposite to different folding doors 104, and the spacing between other adjacent battery assemblies 102 is a second spacing L2, and the first spacing L1 is greater than or equal to the second spacing L2.

[0053] In this way, a single folding door 104 is directly opposite to at least one battery assembly 102 along the second direction Y, thereby reducing the number of battery compartment doors 103 that need to be arranged, that is, reducing the number of folding doors 104 that need to be arranged, so as to reduce the space reserved in the box body 101 for hinged connection with the folding door 104, thereby facilitating increasing the space in the box body 101 for installing the battery assembly 102, so as to further improve the integration density of the battery assembly 102.

[0054] It is worth noting that along the second direction Y, if a single battery compartment door 103 is opposite to a number of battery assemblies 102 greater than 1, then for the battery assembly 102 closest to the hinge between the battery compartment door 103 and the column 131, the battery assembly 102 is opposite to the edge of the battery compartment door 103, and when another battery assembly 102 adjacent to the battery assembly 102 is opposite to another battery compartment door 103, the distance between two adjacent battery assemblies 102 is the first distance L1. To ensure that the complete battery assembly 102 is exposed when the battery compartment door 103 is opened, so as to facilitate operations such as installation, inspection and maintenance of the battery assembly 102, the first distance L1 will be opposite to a column 131 along the second direction Y, and the size of the first distance L1 will change based on the change in the width of the column 131 in the first direction X. In addition, the spacing between other adjacent battery assemblies 102, that is, the second spacing L2, will not correspond to the column 131 along the second direction Y, so the second spacing L2 only needs to reserve components that need to be arranged in the adjacent battery assemblies 102, such as the installation space of the battery rack.

[0055] Based on this, when the first spacing L1 is designed to be greater than or equal to the second spacing L2, it is beneficial to increase the width of the column 131 in the first direction X to increase the supporting strength of the column 131 to the edge frame 121, while reducing the spacing between other adjacent battery assemblies 102, that is, the size of the second spacing L2, to increase the number of battery assemblies 102 that can be arranged in the limited layout space of the battery compartment 111, thereby further improving the integration density of the battery assemblies 102 in the battery compartment 111.

[0056] It should be noted that, in some cases, the supporting strength of the rim 121 itself is very high, and the requirement for the supporting strength of the column 131 is relatively low, then the first spacing L1 can be equal to the second spacing L2, in other words, the arrangement between any two adjacent battery assemblies 102 can be relatively close, so as to improve the integration density of the battery assemblies 102 in the battery compartment 111; in other cases, the requirement for the supporting strength of the column 131 is relatively high, then the first spacing L1 can be greater than the second spacing L2, which is beneficial to improve the supporting strength of the column 131 to the rim 121 while reducing the size of the second spacing L2 to ensure a higher integration density of the battery assemblies 102 in the battery compartment 111.

[0057] In some embodiments, reference Figure 1 or Figure 2 , the first spacing L1 is 60mm~150mm.

[0058] If the first spacing L1 is greater than 150 mm, the spacing between at least some adjacent battery assemblies 102 is too large, which will reduce the integration density of the battery assemblies 102 in the battery compartment 111; if the first spacing L1 is less than 60 mm, the width of the column 131 directly opposite to the first spacing L1 along the first direction X is too small, so that the support strength of the column 131 cannot meet the requirements. Therefore, designing the first spacing L1 to be 60 mm to 150 mm is conducive to ensuring a high integration density of the battery assembly 102 in the battery compartment 111 while ensuring that the column 131 has a high support strength.

[0059] In an example, the first distance L1 may be 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm or 140 mm, etc.

[0060] In some embodiments, reference Figure 1 or Figure 2 , the second spacing L2 is 30mm~150mm.

[0061] If the second spacing L2 is greater than 150 mm, the spacing between at least some adjacent battery assemblies 102 is too large, which will reduce the integration density of the battery assemblies 102 in the battery compartment 111; if the second spacing L2 is less than 30 mm, the components arranged in the adjacent battery assemblies 102, such as the installation space of the battery rack, will be compressed, so that the battery assemblies 102 cannot be fixed in the box 101 with the help of the battery rack. Therefore, the second spacing L2 is designed to be 30 mm to 150 mm, which is conducive to ensuring a high integration density of the battery assemblies 102 in the battery compartment 111 while ensuring sufficient installation space between adjacent battery assemblies 102.

[0062] In an example, the second distance L2 may be 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 65 mm, 75 mm, 85 mm, 95 mm, 105 mm, 115 mm, 125 mm, 135 mm or 145 mm, etc.

[0063] In some embodiments, reference Figure 1 or Figure 2 Along the first direction X, the width of the column 131 hinged to the battery compartment door 103 is a first width W1, and the width of the column 131 not hinged to the battery compartment door 103 is a second width W2, and the first width W1 is greater than or equal to the second width W2.

[0064] It is worth noting that not all the columns 131 are hinged with the battery compartment door 103. Some of the columns 131 are only used to strengthen the overall support strength of the box body 101 to prevent the box body 101 from deforming. Based on this, the columns 131 hinged with the battery compartment door 103 not only need to play a certain supporting role for the box body 101, but also need to bear the force applied to it by the battery compartment door, so higher requirements are placed on the strength of the columns 131 hinged with the battery compartment door 103. In other words, the columns 131 hinged with the battery compartment door 103 need to meet the support of not only the prism 121, but also the support of the battery compartment door 103. Therefore, designing the first width W1 to be greater than or equal to the second width W2 is beneficial for improving the supporting strength of the column 131 hinged to the battery compartment door 103 while reducing the width of the column 131 not hinged to the battery compartment door 103, that is, the second width W2, so as to reduce the preparation cost required to form the box body 101 and reduce the total layout space occupied by all the columns 131 in the box body 101.

[0065] It should be noted that in order to distinguish between the pillars 131 hinged to the battery compartment door 103 and the pillars 131 not hinged to the battery compartment door 103, Figure 1 and Figure 2 Different filling methods are used to draw the two. In addition, the embodiment of the present disclosure does not limit the arrangement number and specific arrangement method of the columns 131 that are not hinged to the battery compartment door 103 in the box body 101, and both can be adjusted according to actual conditions.

[0066] In some embodiments, continue to refer to Figure 1 and Figure 2 , the first width W1 is 60mm~150mm, and the second width W2 is 22mm~142mm. It is worth noting that the first width W1 corresponds to the first spacing L1, and the value range of the first width W1 and the first spacing L1 is the same. In addition, if the second width W2 is greater than 142mm, not only will the preparation cost required to form the box 101 be too large, but the total layout space occupied by all the columns 131 in the box 101 will also be too large, and the installation space reserved for the battery rack in the second spacing L2 will be too small; if the second width W2 is less than 52mm, the supporting strength of the column 131 itself will be too small, and it will not play a supporting role for the box 101. Therefore, designing the second width W2 to be 52mm~142mm is conducive to reducing the preparation cost required to form the box 101 while ensuring that the column 131 plays a supporting role for the box 101, and reducing the total layout space occupied by all the columns 131 in the box 101, and reserving enough installation space for the battery rack.

[0067] In an example, the first width W1 may be 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, or 140 mm, etc.

[0068] In one example, the second width W2 may be 27 mm, 32 mm, 37 mm, 42 mm, 47 mm, 57 mm, 67 mm, 77 mm, 87 mm, 97 mm, 107 mm, 117 mm, 127 mm or 137 mm, etc.

[0069] In some embodiments, reference Figures 1 to 3 The box body 101 may further include: 4 main columns 151 for forming 8 vertices of the box body 101, and the two ends of one main column 151 along the third direction Z constitute the two vertices of the box body 101; along the first direction X, the width of the main column 151 is the third width W3, and the third width W3 is greater than or equal to the first width W1.

[0070] In some embodiments, the third width W3 is 80 mm to 170 mm, which is beneficial for improving the overall support strength of the box body 101 by means of the four main columns 151 .

[0071] In an example, the third width W3 may be 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm or 160 mm, etc.

[0072] In some embodiments, in addition to the battery compartment door 103 , the energy storage system 100 also includes: a plurality of electrical compartment doors (not shown in the figure), and the electrical compartment door is located on at least one of the two opposite sides of the battery assembly 102 along the first direction X.

[0073] In some cases, reference Figure 1 In addition to the battery compartment 111 for accommodating the battery assembly 102, the box body 101 also has an electrical compartment 141 for accommodating electrical equipment. The battery compartment 111 and the electrical compartment 141 can be arranged along the first direction X. The electrical compartment 141 can be used to accommodate at least one of a fire-fighting device (not shown in the figure), an electrical integrated cabinet (not shown in the figure), and a liquid cooling unit (not shown in the figure). Based on this, the electrical compartment door can be located on the side of the electrical compartment 141 away from the battery compartment 111 along the first direction X.

[0074] It should be noted that Figure 1 and Figure 2 The dotted line frame in the figure shows the approximate area where the battery compartment 111 and the electrical compartment 141 in the box body 101 are located. Figure 3 The dotted lines in the figure indicate the approximate area where the battery compartment 111 and the electrical compartment 141 are located in the box body 101 .

[0075] In some cases, for the battery compartment door 103 corresponding to the edge of the battery compartment 111 on the side away from the electrical compartment 141 along the first direction X, the column 131 hinged to the battery compartment door 103 can be the main column 151. In other words, the main column 151 here can be used to be hinged to the battery compartment door 103.

[0076] In some embodiments, reference Figures 1 to 6 , one battery compartment door 103 faces N battery assemblies 102 along the second direction Y, one folding door 104 faces 2N battery assemblies 102 along the second direction Y, and N is a rational number greater than or equal to 1. In this way, a single folding door 104 faces at least more than one battery assembly 102 along the second direction Y, thereby reducing the number of folding doors 104 that need to be arranged, so as to reduce the space reserved in the box 101 for hinged connection with the folding door 104. In other embodiments, one battery compartment door may also face half of the battery assembly along the second direction, and then a single folding door faces one battery assembly along the second direction.

[0077] In some embodiments, N may be 1, 1.5, or 2, etc.

[0078] The corresponding relationship between the battery compartment door 103 and the battery assembly 102 is described in detail below.

[0079] In some embodiments, reference Figures 1 to 3 Along the second direction Y, the battery compartment door 103 and the battery assembly 102 are in a 1 to 1.5 relationship, so one folding door 104 is directly opposite to the three adjacent battery assemblies 102 along the first direction X.

[0080] In some cases, for any battery compartment door 103 in the energy storage system, the battery compartment door 103 and the battery assembly 102 can be in a 1:1.5 relationship, and different folding doors 104 correspond to the same number of battery assemblies 102. In other words, different folding doors 104 face the same number of battery assemblies 102 along the second direction Y. In this way, the types of several folding doors 104 in the energy storage system are the same, that is, the sizes of different folding doors 104 are consistent, which is conducive to reducing the preparation cost of the folding doors 104.

[0081] In some cases, reference Figures 1 to 3 , the opening directions of adjacent folding doors 104 are the same.

[0082] In other cases, when a single folding door is directly opposite to three battery assemblies adjacent in the first direction, at least some of the adjacent folding doors are opened in opposite directions, for example, at least some of the adjacent folding doors are opened in opposite directions. In other words, the two folding doors shared by the six battery assemblies adjacent in the first direction are opened in opposite directions. It is worth noting that one of the two folding doors that are opened in opposite directions needs to be rotated clockwise to expose the battery assembly, and the other needs to be rotated counterclockwise to expose the battery assembly. In this way, there is no need to reserve a space between the two adjacent folding doors for the folding doors to be hinged. In other words, there is no need to set a column between the two adjacent folding doors, which is conducive to reducing the area where the folding door is hinged to the box body, so as to reduce the space reserved in the box body for the folding door to be hinged, thereby facilitating increasing the space in the box body for installing the battery assembly, so as to further improve the integration density of the battery assembly.

[0083] In other embodiments, reference Figure 4 , Figure 4 A third partial top view structural diagram of the energy storage system provided in the embodiment of the present disclosure shows that along the second direction Y, the battery compartment door 103 and the battery assembly 102 are in a 1 to 2 relationship, and one folding door 104 is directly opposite to four adjacent battery assemblies 102 along the first direction X.

[0084] In some cases, for any battery compartment door 103 in the energy storage system, the battery compartment door 103 and the battery assembly 102 can be in a 1-to-2 relationship, and different folding doors 104 correspond to the same number of battery assemblies 102 .

[0085] For example, refer to Figure 4 When eight battery assemblies 102 are arranged along the first direction X in the energy storage system, four battery assemblies 102 correspond to one folding door 104 , and the other four battery assemblies 102 correspond to another folding door 104 .

[0086] In some cases, reference Figure 4 , the opening directions of adjacent folding doors 104 are opposite and are opened in opposite directions. In other cases, the opening directions of adjacent folding doors can also be the same.

[0087] In some other embodiments, reference Figure 5 , Figure 5The fourth partial top view structural diagram of the energy storage system provided by the embodiment of the present disclosure, some battery compartment doors 103 and battery assemblies 102 are in a 1:1.5 relationship, some battery compartment doors 103 and battery assemblies 102 are in a 1:1 relationship, then some folding doors 104 are directly opposite to the three adjacent battery assemblies 102 along the first direction X, and some folding doors 104 are directly opposite to the two adjacent battery assemblies 102 along the first direction X. In this way, different folding doors 104 correspond to different numbers of battery assemblies 102, in other words, different folding doors 104 are directly opposite to different numbers of battery assemblies 102 along the second direction Y. Among them, the opening directions of adjacent folding doors 104 can be the same or opposite.

[0088] For example, refer to Figure 5 When there are five battery assemblies 102 arranged along the first direction X in the energy storage system, three battery assemblies 102 correspond to one folding door 104 , and the other two battery assemblies 102 correspond to another folding door 104 .

[0089] In some cases, the energy storage system includes at least three folding doors 104. In some examples, the opening directions of different adjacent folding doors 104 may be different, for example, among the three folding doors 104, the opening directions of two adjacent folding doors 104 are the same, and the opening directions of the other two adjacent folding doors 104 are opposite; in other examples, the opening directions of all the folding doors 104 are the same, so that any two folding doors 104 can be opened at the same time without interfering with each other.

[0090] In some further embodiments, reference Figure 6 , Figure 6 In the fifth partial top view structural diagram of the energy storage system provided in the embodiment of the present disclosure, some battery compartment doors 103 and battery assemblies 102 are in a 1 to 2 relationship, and some battery compartment doors 103 and battery assemblies 102 are in a 1 to 1 relationship, then some of the folding doors 104 are opposite to four adjacent battery assemblies 102 along the first direction X, and some of the folding doors 104 are opposite to two adjacent battery assemblies 102 along the first direction X.

[0091] For example, refer to Figure 6 When six battery assemblies 102 are arranged along the first direction X in the energy storage system, four battery assemblies 102 share one folding door 104 , and the other two battery assemblies 102 share another folding door 104 .

[0092] It is worth noting that the battery compartment door 103 with a corresponding relationship of 1 to 1.5 with the battery assembly 102 is used as the first type of battery compartment door, the battery compartment door 103 with a corresponding relationship of 1 to 2 with the battery assembly 102 is used as the second type of battery compartment door, and the battery compartment door 103 with a corresponding relationship of 1 to 1 with the battery assembly 102 is used as the third type of battery compartment door. In some cases, a single folding door 104 can be composed of two of the first type of battery compartment door, the second type of battery compartment door, or the third type of battery compartment door; in other cases, a single folding door 104 can be composed of one second type of battery compartment door and one third type of battery compartment door. Moreover, the types of different folding doors 104 in the energy storage system can be the same or different. In addition, the opening direction of adjacent folding doors 104 can be flexibly adjusted according to actual conditions.

[0093] It should be noted that, the more battery assemblies 102 a single battery compartment door 103 faces in the second direction Y, the more battery assemblies 102 a single folding door 104 faces in the second direction Y, and the fewer folding doors 104 are required to be arranged in the energy storage system, the more conducive it is to reducing the space reserved in the box body 101 for the hinged connection with the folding door 104, thereby facilitating increasing the space in the box body 101 for installing the battery assemblies 102, so as to further improve the integration density of the battery assemblies 102.

[0094] In some embodiments, the opening directions of adjacent folding doors 104 may be the same or opposite. It should be noted that the same opening directions of adjacent folding doors 104 means that the two adjacent folding doors 104 both need to rotate the folding doors 104 clockwise to expose the battery assembly 102, or both need to rotate the folding doors 104 counterclockwise to expose the battery assembly 102; the opposite opening directions of adjacent folding doors 104 means that one of the two adjacent folding doors 104 needs to rotate the folding door 104 clockwise to expose the battery assembly 102, and the other needs to rotate the folding door 104 counterclockwise to expose the battery assembly 102. It is worth noting that the opposite opening directions of adjacent folding doors 104 include but are not limited to the two adjacent folding doors 104 opening opposite to each other.

[0095] In some embodiments, the battery compartment 111 contains 4 to 8 battery assemblies 102 spaced apart along a first direction X; the battery assembly 102 includes 6 to 10 battery packs (not shown) stacked along a third direction, and the third direction Z is the height direction of the energy storage system 100 .

[0096] In one example, refer to Figure 1 The battery compartment 111 contains six battery assemblies 102 arranged at intervals along a first direction X, and the battery assembly 102 includes eight battery packs stacked along a third direction Z.

[0097] In some embodiments, along the first direction X, the length of the box 101 is 5.5m to 6.6m, for example, 5.58m, 5.69m, 6.35m or 6.58m, etc.; along the second direction Y, the width of the box 101 is 2.1m to 2.5m, for example, 2.13m, 2.25m, 2.3m, 2.35m, 2.4m, 2.438m or 2.485mm, etc.; along the third direction Z, the height of the box 101 is 2.1m to 3m, for example, 2.18m, 2.25m, 2.3m, 2.4m, 2.5m, 2.6m, 2.7m, 2.8m, 2.896m or 2.973mm, etc. In one example, the box 101 can be composed of a 20-foot container.

[0098] In some embodiments, the total capacity of all battery components 102 in the energy storage system is 4MWh to 6MWh, for example, 4MWh, 4.53MWh, 5MWh, 5.016MWh, 5.32MWh, 5.5MWh or 5.7MWh.

[0099] In summary, based on the design of the folding door 104, it is not necessary for each battery compartment door 103 to be hinged to the box body 101, which is conducive to reducing the hinged area of ​​the battery compartment door 103 and the box body 101, thereby facilitating the increase of the space in the box body 101 for installing the battery assembly 102, so as to improve the integration density of the battery assembly 102. Moreover, based on the opening method of the folding door 104, the degree of opening of the folding door 104 can be flexibly adjusted, so as to flexibly adjust the size of the area of ​​the single battery assembly 102 exposed by the folding door 104 or flexibly adjust the number of battery assemblies 102 exposed by the folding door 104, so as to improve the convenience of operators when installing, inspecting or repairing the battery assembly 102. In addition, the battery assemblies 102 are only arranged at intervals along the first direction X, and only one battery assembly 102 is arranged along the second direction Y, which is beneficial to increasing the volume of a single battery assembly 102. Firstly, the number of battery cells that the battery assembly 102 itself can be increased, thereby increasing the capacity of the battery assembly 102 itself. Secondly, the number of battery assemblies 102 required to be arranged in the battery compartment 111 can be reduced to reduce the layout space left for the intervals between adjacent battery assemblies 102 in the battery compartment 111, thereby facilitating further increasing the total capacity of the plurality of battery assemblies 102 that can be accommodated in the battery compartment 111, thereby improving the energy storage density of the energy storage system 100.

[0100] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the embodiments of the present disclosure. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present disclosure, so the protection scope of the embodiments of the present disclosure shall be based on the scope defined in the claims.

Claims

1. An energy storage system, characterized in that: include: A box body, wherein the box body has a battery compartment for accommodating a battery assembly; A plurality of the battery assemblies are located in the battery compartment, and the plurality of the battery assemblies are arranged at intervals along a first direction and extend along a second direction, the first direction is a length direction of the energy storage system, and the second direction is a width direction of the energy storage system; A plurality of battery compartment doors, wherein the battery compartment doors are directly opposite to the battery assembly along the second direction, wherein two adjacent battery compartment doors are hinged to form a folding door, and only one side of the folding door is hinged to the box body.

2. The energy storage system according to claim 1, characterized in that: The two battery compartment doors constituting the folding door are respectively a first battery compartment door and a second battery compartment door, one side of the first battery compartment door is hinged to the box body, and the other side of the first battery compartment door is hinged to the second battery compartment door; Among them, the first battery compartment door is hinged to the box body through a first rotating axis, and the first battery compartment door is hinged to the second battery compartment door through a second rotating axis. The first battery compartment door can rotate around the first rotating axis, the second battery compartment door can rotate around the second rotating axis, and the second battery compartment door can be detached from the box body as a whole.

3. The energy storage system according to claim 1, characterized in that: The two battery compartment doors constituting the folding door are respectively a first battery compartment door and a second battery compartment door, one side of the first battery compartment door is hinged to the box body, and the other side of the first battery compartment door is hinged to the second battery compartment door; Among them, the second battery compartment door has a first side hinged to the first battery compartment door, and a second side opposite to the first side along the width direction of the second battery compartment door, a pulley is provided at the bottom of the second side along the third direction, and a slide groove is provided at the bottom of the box body along the third direction, and the pulley is provided in the slide groove, the second battery compartment door can not only rotate around the first side, but also slide along the slide groove, and the third direction is the height direction of the energy storage system.

4. The energy storage system according to any one of claims 1 to 3, characterized in that: A plurality of the battery compartment doors are located only on one side of the battery assembly along the second direction.

5. The energy storage system according to any one of claims 1 to 3, characterized in that: The box body includes a plurality of prisms and a plurality of columns constituting a storage space inside the box body, the columns are located between two prisms opposite to each other along a third direction, and only one side of the folding door is hinged to the columns, and the third direction is the height direction of the energy storage system.

6. The energy storage system according to claim 5, characterized in that: Along the first direction, the spacing between the battery assembly closest to the hinge between the battery compartment door and the column and another adjacent battery assembly is a first spacing, and two adjacent battery assemblies with a spacing of the first spacing are opposite to different folding doors, and the spacing between other adjacent battery assemblies is a second spacing, and the first spacing is greater than or equal to the second spacing.

7. The energy storage system according to claim 6, characterized in that: The first spacing is 60 mm to 150 mm, and the second spacing is 30 mm to 150 mm.

8. The energy storage system according to any one of claims 1 to 3, characterized in that: One battery compartment door faces N battery assemblies along the second direction, and one folding door faces 2N battery assemblies along the second direction, where N is a rational number greater than or equal to 1.

9. The energy storage system according to claim 8, characterized in that: Different folding doors correspond to different numbers of battery assemblies, or different folding doors correspond to the same number of battery assemblies.

10. The energy storage system according to any one of claims 1 to 3, characterized in that: The opening directions of adjacent folding doors are the same or opposite.

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