Energy storage system and microgrid system

Abstract

Embodiments of the present application provide an energy storage system and a microgrid system. The energy storage system comprises: one or more battery clusters, wherein each battery cluster comprises a plurality of battery cells, and the size of the battery cluster along a first direction is greater than the size of the battery cluster along a second direction; and a case, configured to accommodate the battery clusters, wherein the size of the case along the first direction is smaller than the size of the case along the second direction. Along the first direction, the size of the case matches the size of the battery cluster, so that the case is configured to place a row of battery clusters along the first direction, the first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the height direction of the case. The energy storage system and the microgrid system provided in the embodiments of the present application can improve the space utilization rate of the case of the energy storage system.

Description

Energy storage systems and microgrid systems

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the utility model application filed with the Patent Office of China on September 28, 2023, with application number 202322652243.0 and title “Energy Storage System and Microgrid System,” all contents of which are incorporated into this application by application. Technical Field

[0003] The present application relates to the field of energy storage technology, and more specifically, to an energy storage system and a microgrid system. Background Art

[0004] With the continuous development of new energy technologies, more and more energy storage systems are being connected to the power grid. By connecting energy storage systems to the grid, the random and fluctuating energy of renewable energy systems such as wind power and photovoltaics can be smoothly transmitted to the grid, reducing the impact of power fluctuations from renewable energy systems on the grid and improving the stability and reliability of the grid.

[0005] At present, most energy storage systems are container-type energy storage systems. The space utilization rate of container-type energy storage systems is low, which leads to the energy storage systems occupying a large space, being inconvenient to install and transport, and having a low energy density, which greatly limits the application of energy storage systems.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide an energy storage system and a microgrid system, which can improve the space utilization of the box of the energy storage system.

[0008] In a first aspect, an energy storage system is provided, comprising: one or more battery clusters, each battery cluster comprising a plurality of battery cells, the size of the battery cluster along a first direction being larger than the size of the battery cluster along a second direction; and a case for accommodating the battery cluster, the size of the case along the first direction being smaller than the size of the case along the second direction; wherein, along the first direction, the size of the case matches the size of the battery cluster, so that the case is used to place a row of battery clusters along the first direction, the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the height direction of the case.

[0009] In the embodiment of the present application, along the first direction, by matching the size of the box with the size of the battery cluster, the box is used to accommodate a row of battery clusters along the first direction. Furthermore, by arranging the long sides of the battery clusters parallel to the short sides of the box, only one row of elongated battery clusters can be accommodated in the box along the first direction, thereby improving the space utilization of the box.

[0010] In a possible implementation, the battery cluster includes one or more battery packs stacked in a height direction, and the battery packs include one or more battery cells.

[0011] In an embodiment of the present application, by providing a battery cluster including one battery pack or a plurality of battery packs stacked in a height direction, a row of battery packs can be placed in the box along a first direction, and the long sides of the battery packs are parallel to the short sides of the box, so that the box can just place a row of extended battery packs along the first direction, which can improve the space utilization of the box.

[0012] In one possible implementation, the battery cells in the battery pack are connected in series.

[0013] In the embodiment of the present application, by connecting the battery cells in the battery pack in series, the requirements for the overcurrent capability of the electrical components in the battery pack can be reduced, while the number of battery cells in the battery pack can be increased.

[0014] In one possible implementation, the battery pack also includes a slave control unit, which is connected to the battery cells of the battery pack. The slave control unit is used to collect status information of the battery cells in the battery pack, and the status information includes one or more of current information, voltage information, power information or state of charge (SOC) information.

[0015] In an embodiment of the present application, by collecting one or more status information including current information, voltage information, power information or SOC information of a battery cell, the status information of a battery pack, a battery cluster or an energy storage system can be determined based on the status information of the battery cell, thereby reasonably controlling the charging and discharging process of the energy storage system and improving the performance and life of the energy storage system.

[0016] In one possible implementation, the battery pack includes 104 battery cells.

[0017] In the embodiment of the present application, by providing 104 battery cells in the battery pack, the number of battery cells in the battery pack is increased.

[0018] In one possible implementation, the battery pack includes two slave control units, which are respectively used to collect status information of the first group of battery cells and the second group of battery cells in 104 battery cells. The number of battery cells in the first group of battery cells or the second group of battery cells does not exceed 56.

[0019] In an embodiment of the present application, two slave control units are provided in a battery pack including 104 battery cells, so that the status information of the battery cells in the battery pack can be comprehensively and accurately collected, thereby accurately controlling the charging and discharging of the energy storage system, thereby improving the performance and service life of the energy storage system.

[0020] In a possible implementation, the battery cluster further includes a main control box, which is used for energy transmission of the battery cluster.

[0021] In the embodiment of the present application, a main control box is provided in the battery cluster to house the electrical components of the battery cluster, thereby facilitating the maintenance and management of the electrical components in the battery cluster.

[0022] In a possible implementation, the box includes a plurality of compartments arranged along the second direction, the plurality of compartments including a first compartment, and the first compartment is used to accommodate at least one battery cluster among the plurality of battery clusters.

[0023] In an embodiment of the present application, a plurality of bins arranged along the second direction are provided in the box, and one of the plurality of bins can hold at least one battery cluster, thereby achieving a reasonable allocation of the space in the box and improving the space utilization of the box.

[0024] In a possible implementation, the first compartment includes a plurality of sub-compartments, which are stacked in a height direction, and the plurality of sub-compartments are respectively used to place a battery pack and a main control box of at least one battery cluster.

[0025] In an embodiment of the present application, by arranging a plurality of sub-compartments stacked in the height direction in the first compartment body for placing the battery pack and the main control box of at least one battery cluster, rational utilization of the space in the first compartment body is achieved, the space utilization rate of the first compartment body is improved, and the space utilization rate of the box body can be improved.

[0026] In a possible implementation, an external output panel of a battery pack of at least one battery cluster faces a first side in a first direction, wherein the number of battery packs in the at least one battery cluster is greater than or equal to 2.

[0027] In the embodiment of the present application, by setting the orientation of the external output panels of the battery packs in the first compartment to be consistent, the installation and maintenance of the battery cluster are facilitated, the installation and maintenance efficiency of the battery cluster is improved, and at the same time, the space of the box can be reasonably utilized, thereby improving the space utilization rate of the box.

[0028] In a possible implementation, at least one battery cluster includes a main control box, one end of the main control box is connected to the battery pack of the at least one battery cluster, and the other end of the main control box is connected to the bus bar.

[0029] In an embodiment of the present application, at least one battery cluster in the first compartment may include a main control box, which can be used to transmit energy of at least one battery cluster. In this way, the space occupied by the main control box in the first compartment can be reduced, thereby improving the space utilization of the box or reducing the volume of the box.

[0030] In a possible implementation, one of the at least one battery clusters includes a main control box, one end of the main control box is connected to the battery pack of the battery cluster, and the other end of the main control box is connected to the bus bar.

[0031] In the embodiment of the present application, each battery cluster includes a main control box, which can flexibly realize the energy transmission of each battery cluster, and at the same time facilitate the installation and maintenance of each battery cluster in the first compartment, thereby improving the efficiency of battery cluster installation and maintenance.

[0032] In a possible implementation, a box door is provided on the first side of the portion of the box corresponding to the first warehouse body.

[0033] In the embodiment of the present application, a box door is provided on one side of the external output panel of the battery pack of at least one battery cluster at the position of the box body corresponding to the first compartment body, which facilitates the installation and maintenance of the battery cluster and improves the efficiency of the installation and maintenance of the battery cluster.

[0034] In a possible implementation, the external output panels of the battery packs of at least one battery cluster face both sides of the first direction, wherein the external output panels of the battery packs of the same battery cluster face the same direction, and the number of at least one battery cluster is greater than or equal to 2.

[0035] In an embodiment of the present application, the output panels of the battery packs in the first bin are oriented toward both sides of the first direction, so that the direction of the battery packs in the first bin can be flexibly set. This also facilitates the installation and maintenance of each battery cluster in the first bin, thereby improving the efficiency of the installation and maintenance of the battery clusters.

[0036] In a possible implementation, one of the at least one battery clusters includes a main control box, one end of the main control box is connected to the battery pack of the battery cluster, and the other end of the main control box is connected to the bus bar.

[0037] In an embodiment of the present application, each battery cluster in the first compartment may include a main control box, which can be used to transmit energy for a battery cluster, facilitate the installation and maintenance of each battery cluster in the first compartment, and improve the efficiency of battery cluster installation and maintenance.

[0038] In a possible implementation, doors are provided on both sides of the first direction of the portion of the box corresponding to the first warehouse.

[0039] In the embodiment of the present application, by providing box doors on both sides of the first direction at the portion of the box corresponding to the first bin, the installation and maintenance of each battery cluster in the first bin is facilitated, thereby improving the efficiency of battery cluster installation and maintenance.

[0040] In a possible implementation, the main control box of one battery cluster and the external output panel of the battery pack in at least one battery cluster are oriented in the same direction.

[0041] In the embodiment of the present application, by arranging the main control box and the external output panel of the battery pack in a battery cluster to face the same direction, the installation and maintenance of the battery cluster are facilitated, and the space utilization of the box can be improved.

[0042] In a possible implementation, the energy storage system includes eight battery clusters, the box includes four compartments arranged along the second direction, and one compartment of the four compartments is used to accommodate two battery clusters among the eight battery clusters.

[0043] In an embodiment of the present application, four compartments arranged along the second direction are provided in the box, and one of the four compartments can hold at least two battery clusters, thereby achieving a reasonable allocation of the space in the box and improving the space utilization of the box.

[0044] In one possible implementation, each of the eight battery clusters includes four battery packs, and a warehouse body includes nine sub-compartments stacked in the height direction. The lowest sub-compartment among the nine sub-compartments is used to place the main control boxes of the two battery clusters, and the remaining sub-compartments among the nine sub-compartments are used to place the eight battery packs of the two battery clusters, respectively, wherein the battery packs placed in adjacent sub-compartments are battery packs of different battery clusters.

[0045] In an embodiment of the present application, by setting 9 sub-compartments stacked in the height direction in the first warehouse body for placing battery packs and a main control box of two battery clusters, rational utilization of the space in the warehouse body is achieved, the space utilization rate of the warehouse body is improved, and the space utilization rate of the box body can be improved.

[0046] In one possible implementation, the external output panels of the battery packs of the two battery clusters are oriented toward one side of the first direction, the two battery clusters include a main control box, the external output panels of the battery packs of the two battery clusters are oriented in the same direction as the external output panel of the main control box, and the main control box is used to transmit energy between the two battery clusters.

[0047] In an embodiment of the present application, in a warehouse body, by setting the orientation of the battery packs of two battery clusters and the external output panel of the main control box to be consistent, the installation and maintenance of the battery cluster in a warehouse body is facilitated, the installation and maintenance efficiency of the battery cluster is improved, and at the same time, the space of the box body can be reasonably utilized, thereby improving the space utilization rate of the box body.

[0048] In one possible implementation, the external output panels of the battery packs of the two battery clusters face both sides of the first direction, each of the two battery clusters includes a main control box, and the battery packs of each battery cluster in the two battery clusters are oriented in the same direction as the external output panels of the main control box.

[0049] In an embodiment of the present application, the output panels of the battery packs in a bin are oriented toward both sides of the first direction, so that the direction of the battery packs in a bin can be flexibly set, while also facilitating the installation and maintenance of each battery cluster in a bin, thereby improving the efficiency of the installation and maintenance of the battery clusters.

[0050] In one possible implementation, the energy storage system further includes one or more of the following: a thermal management device for adjusting the temperature of the energy storage system; a fire-fighting device for detecting, alarming, or extinguishing a fire in the energy storage system; and a power distribution device for distributing power to electrical equipment in the energy storage system; wherein one or more of the thermal management device, the fire-fighting device, or the power distribution device is arranged on one side of the box along the second direction.

[0051] In an embodiment of the present application, by arranging one or more of the thermal management device, the fire protection device and the power distribution device on one side of the box along the second direction, the space utilization of the box can be improved.

[0052] In a possible implementation, the battery cluster further includes a master control unit, one end of which is connected to the slave control unit for communicating with the slave control unit.

[0053] In the embodiment of the present application, by connecting the master control unit with the slave control unit, the status information of the battery cells in the battery cluster can be obtained, so that the status information of the battery cluster can be accurately determined.

[0054] In a possible implementation, the energy storage system further includes: a master control unit, which is connected to the main control unit and is configured to communicate with the main control unit.

[0055] In the embodiment of the present application, by connecting the master control unit with the main control unit, the status information of the battery cluster in the energy storage system can be obtained, the status information of the energy storage system can be determined, and the charging and discharging process of the energy storage system can be reasonably controlled.

[0056] In a second aspect, a microgrid system is provided, comprising an energy storage system as described in the first aspect or any one of the first aspects above. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] FIG1 is a schematic structural diagram of an energy storage system provided in an embodiment of the present application.

[0058] FIG2 is a schematic structural diagram of a battery cluster provided in an embodiment of the present application.

[0059] FIG3 is an architecture diagram of a battery cluster provided in an embodiment of the present application.

[0060] FIG4 is another schematic structural diagram of a battery cluster provided in an embodiment of the present application.

[0061] FIG5 is a schematic structural diagram of an energy storage system provided in an embodiment of the present application.

[0062] FIG6 is a schematic diagram of the first storage body provided in an embodiment of the present application.

[0063] FIG7 is an architecture diagram of an energy storage system provided in an embodiment of the present application.

[0064] FIG8 is a schematic structural diagram of an energy storage system provided in an embodiment of the present application.

[0065] FIG9 is another schematic diagram of the first storage body provided in an embodiment of the present application.

[0066] FIG10 is an architecture diagram of an energy storage system provided in an embodiment of the present application.

[0067] FIG11 is a schematic structural diagram of an energy storage system provided in an embodiment of the present application.

[0068] FIG12 is a schematic structural diagram of an energy storage system provided in an embodiment of the present application.

[0069] FIG13 is a schematic diagram of the signal flow of the energy storage system provided in an embodiment of the present application.

[0070] FIG14 is a schematic block diagram of a microgrid system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0071] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, i.e., the present application is not limited to the described embodiments.

[0072] In the description of this application, it should be noted that the terms "inside" and "outside" and the like indicating directions or positional relationships are only for the purpose of facilitating the description of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting this application. The directional terms appearing in the following description are all directions shown in the figures and do not limit the specific structure of this application. In the embodiments of this application, vertical is not strictly vertical, but is within the range of allowable error.

[0073] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0074] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood broadly. For example, they may refer to electrical connection, mechanical connection, or communication connection; they may refer to fixed connection, detachable connection, or integral connection; and they may refer to direct connection or indirect connection through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0075] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0076] With the continuous development of new energy technologies, more and more energy storage systems are being connected to the power grid. By connecting energy storage systems to the grid, the random and fluctuating energy of renewable energy systems such as wind power and photovoltaics can be smoothly transmitted to the grid, reducing the impact of power fluctuations from renewable energy systems on the grid and improving the stability and reliability of the grid.

[0077] At present, most energy storage systems are container-type energy storage systems. The space utilization rate of container-type energy storage systems is low, which leads to the energy storage systems occupying a large space, being inconvenient to install and transport, and having a low energy density, which greatly limits the application of energy storage systems.

[0078] In view of this, the present application provides an energy storage system and a microgrid system, which includes: one or more battery clusters, each battery cluster having multiple battery cells, the size of the battery cluster along a first direction being larger than the size of the battery cluster along a second direction; a box body, the box body being used to accommodate the battery cluster, the size of the box body along the first direction being smaller than the size of the box body along the second direction; wherein, along the first direction, the size of the box body matches the size of the battery cluster, so that the box body is used to place a row of battery clusters along the first direction, the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the height direction of the box body.

[0079] In the embodiment of the present application, along the first direction, by matching the size of the box with the size of the battery cluster, the box is used to accommodate a row of battery clusters along the first direction. Furthermore, by arranging the long sides of the battery clusters parallel to the short sides of the box, only one row of elongated battery clusters can be accommodated in the box along the first direction, thereby improving the space utilization of the box.

[0080] FIG1 is a schematic structural diagram of an energy storage system 100 provided in an embodiment of the present application.

[0081] The energy storage system 100 includes one or more battery clusters 110 and a box 120 .

[0082] The battery cluster 110 includes a plurality of battery cells 1111 , and a size of the battery cluster 110 along a first direction is greater than a size of the battery cluster 110 along a second direction.

[0083] The box 120 is used to accommodate the battery cluster 110 , and a dimension of the box 120 along the first direction is smaller than a dimension of the box 120 along the second direction.

[0084] The size of the box 120 along the first direction matches the size of the battery cluster 110 so that the box 120 is used to place a row of battery clusters 110 along the first direction. The first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the height direction of the box.

[0085] The height direction of the housing 120 may refer to the direction of the height of the housing 120 when the energy storage system 100 is placed on the ground for use. For example, the housing 120 may be in the shape of a rectangular parallelepiped, and the direction of the height of the housing 120 may be the height direction of the housing 120. As shown in FIG1 , the direction perpendicular to the paper may be the height direction of the housing 120.

[0086] The first and second directions may be the width and length of the housing 120, respectively, and the first and second directions may be the length and width of the battery cluster 110. That is, the long side of the battery cluster 110 may be parallel to the wide side of the housing 120.

[0087] Along the first direction, the size of the box 120 matches the size of the battery cluster 110 , which may mean that along the first direction, the size of the box 120 is slightly larger than or equal to the size of the battery cluster 110 , so that the box 120 is used to place a row of battery clusters 110 along the first direction.

[0088] The dimensions of battery cluster 110 along the first direction should take into account both the dimensions of battery cluster 110 itself and the dimensions occupied by external wiring. For example, if the dimension of battery cluster 110 along the first direction is a, the dimension of housing 120 can also be a. For another example, if the dimension of battery cluster 110 is b, the dimension of housing 120 can be 1.1b. The maximum dimension of housing 120 along the first direction shall not exceed twice the dimension of battery cluster 110 along the first direction.

[0089] For example, as shown in FIG. 1 , along a first direction, the size of the housing 120 is slightly larger than the size of the battery cluster 110 .

[0090] The number of battery clusters 110 arranged in a row along the first direction may be one or more. For example, as shown in FIG1 , one row may be arranged along the first direction and four columns may be arranged along the second direction. Alternatively, one row may be arranged along the first direction and one column may be arranged along the second direction.

[0091] In the embodiment of the present application, along the first direction, by arranging the dimensions of the box 120 to match the dimensions of the battery clusters 110, the box 120 is used to accommodate a row of battery clusters 110 along the first direction. Furthermore, by arranging the long sides of the battery clusters 110 parallel to the short sides of the box 120, the box 120 can accommodate only a single row of elongated battery clusters 110 along the first direction, thereby improving the space utilization of the box 120.

[0092] In some embodiments of the present application, the battery cluster 110 includes one or more battery packs 111 stacked in a height direction, and the battery pack 111 includes one or more battery cells 1111 .

[0093] For example, a battery cluster 110 may include four battery packs 111 stacked in a height direction, and each battery pack 111 includes 12 battery cells 1111 , as shown in FIG. 2 .

[0094] The battery cells 1111 in the battery pack 111 can be placed in a variety of ways. As an example, as shown in FIG2 , two rows are stacked in the height direction, with each row including six rectangular battery cells 1111 arranged sequentially along the second direction. As another example, the multiple battery cells 1111 in the battery pack 111 are stacked only in the height direction. For example, the battery pack 111 includes 10 rectangular battery cells 1111, which are stacked in the height direction and are elongated battery cells.

[0095] Of course, in the embodiment of the present application, the shape of the battery cell 1111 can also be a cube or a cylinder.

[0096] Since the battery cluster 110 includes one battery pack 111 or multiple battery packs 111 stacked in the height direction, the dimensions of the battery pack 111 in the first and second directions are the same as or relatively close to the dimensions of the battery cluster 110. The dimension of the battery pack 111 in the first direction is greater than the dimension of the battery pack 111 in the second direction. In addition, the dimensions of the case 120 in the first direction match the dimensions of the battery pack 111, so that the case 120 is used to accommodate a row of battery packs 111 in the first direction.

[0097] In the energy storage system 100 , the number of battery groups 111 in the multiple battery clusters 110 may be the same or different. Similarly, the number of battery cells 1111 in the multiple battery groups 111 may be the same or different.

[0098] In the embodiment of the present application, by providing a battery cluster 110 including one battery pack 111 or multiple battery packs 111 stacked in the height direction, a row of battery packs 111 can be placed in the box 120 along the first direction, and the long sides of the battery packs 111 are parallel to the short sides of the box 120, so that the box 120 can just place a row of elongated battery packs 111 along the first direction, which can improve the space utilization of the box 120.

[0099] In some embodiments of the present application, as shown in FIG3 , the battery cells 1111 in the battery pack 111 are connected in series.

[0100] That is, when a battery pack 111 includes a plurality of battery cells 1111 , the plurality of battery cells 1111 are connected in series.

[0101] In the embodiment of the present application, by connecting the battery cells 1111 in the battery pack 111 in series, the requirements for the overcurrent capability of the electrical components in the battery pack 111 can be reduced, while the number of battery cells 1111 in the battery pack 111 can be increased.

[0102] In some embodiments of the present application, as shown in FIG3 , the battery packs 111 in the battery cluster 110 may be connected in series.

[0103] That is, in the embodiment of the present application, when a battery pack 110 includes multiple battery packs 111 , the multiple battery packs 111 are connected in series.

[0104] For example, as shown in FIG3 , a battery cluster 110 includes multiple battery packs 111, each of which includes multiple battery cells 1111. The battery cells 1111 in each battery pack 111 are connected in series, and the multiple battery packs 111 are also connected in series. Therefore, all battery cells 1111 in the battery packs 110 are connected in series.

[0105] In some embodiments of the present application, the battery pack 111 includes a slave control unit 1112, which is connected to the battery cells 1111 of the battery pack 111. The slave control unit 112 is used to collect status information of the battery cells 1111 in the battery pack 111. The status information includes one or more of current information, voltage information, power information or state of charge (SOC) information, as shown in Figure 3.

[0106] In the embodiment of the present application, by collecting one or more status information including current information, voltage information, power information, or SOC information of the battery cell 1111, the status information of the battery pack 111, the battery cluster 110, or the energy storage system 100 can be determined based on the status information of the battery cell, thereby reasonably controlling the charging and discharging process of the energy storage system 100 and improving the performance and life of the energy storage system 100.

[0107] In some embodiments of the present application, the battery pack 111 includes 104 battery cells 111 .

[0108] For example, the battery pack 111 may include 104 lithium iron phosphate battery cells, and the 104 lithium iron phosphate battery cells are connected in series.

[0109] In the embodiment of the present application, by providing 104 battery cells 1111 in the battery pack 111 , the number of battery cells 1111 in the battery pack 111 is increased.

[0110] In some embodiments of the present application, the battery pack 111 includes two slave control units 1112, which are respectively used to collect status information of the first group of battery cells and the second group of battery cells in the 104 battery cells 1111, and the number of battery cells in the first group of battery cells or the second group of battery cells does not exceed 56.

[0111] Currently, a slave control unit 1112 can generally support collecting status information of a maximum of 56 battery cells 1111. Therefore, two slave control units 1112 can be provided in a battery pack 111 including 104 battery cells 1111. The 104 battery cells 1111 are divided into two groups, with one slave control unit 1112 used to collect status information of one group of battery cells, and the other slave control unit 1112 used to collect status information of the other group of battery cells.

[0112] For example, the number of battery cells in the first battery cell group is 56, and the number of battery cells 1111 in the second battery cell group is 48. For another example, the number of battery cells in the first battery cell group and the second battery cell group is 52.

[0113] There are multiple communication modes between the slave control units 1112 , for example, communication can be performed in a daisy chain manner, or communication can be performed in a controller area network (CAN) manner.

[0114] In the embodiment of the present application, two slave control units 1112 are provided in a battery pack 111 including 104 battery cells 1111, so that the status information of the battery cells 1111 in the battery pack 111 can be comprehensively and accurately collected, thereby accurately controlling the charging and discharging of the energy storage system 100, thereby improving the performance and service life of the energy storage system 100.

[0115] In some embodiments of the present application, as shown in FIG. 4 , the battery cluster 110 further includes a main control box 112 , which is used for energy transmission of the battery cluster 110 .

[0116] The main control box 112 can be used to house the electrical components of the battery cluster 110. One end of the main control box 112 can be connected to the busbar, and the other end of the main control box 112 can be connected to the battery pack 111 in the battery cluster 110. The main control box 112 connects the battery pack 111 to the busbar, thereby enabling energy transmission between the battery cluster 110 and the busbar.

[0117] In the embodiment of the present application, a main control box 112 is provided in the battery cluster 110 to house the electrical components of the battery cluster 110 , thereby facilitating maintenance and management of the electrical components in the battery cluster 110 .

[0118] In some embodiments of the present application, the box 120 further includes a plurality of compartments 121 arranged along the second direction. The plurality of compartments 121 include a first compartment. The first compartment is used to accommodate at least one battery cluster 110 among the plurality of battery clusters 110 .

[0119] The first warehouse body is any one of the multiple warehouse bodies 121.

[0120] For example, as shown in Figure 5, the box 120 is provided with four compartments 121 arranged along the second direction. These four compartments 121 can be used for the aforementioned row of battery clusters 110 along the first direction. The box 120 contains battery clusters 110 arranged in a row along the first direction and in four columns along the second direction. The row and four columns of battery clusters 110 can be placed in the four compartments 121, respectively.

[0121] The box body 120 is provided with a plurality of compartments 121 along the second direction, and one of the compartments 121 is used as a first compartment. At least one battery cluster 110 can be placed in the first compartment.

[0122] In this embodiment, the number of battery clusters 110 placed in the plurality of compartments 121 may be the same or different.

[0123] In the embodiment of the present application, a plurality of compartments 121 arranged along the second direction are provided in the box 120, and one of the plurality of compartments 121 can accommodate at least one battery cluster 110, thereby achieving a reasonable allocation of the space in the box 120 and improving the space utilization of the box 120.

[0124] In some embodiments of the present application, the first compartment includes multiple sub-compartments 1211 , which are stacked in the height direction and used to house the battery pack 111 and the main control box 112 of at least one battery cluster 110 .

[0125] For example, (a) and (b) of Figure 6 are views of the first compartment on both sides of the second direction, respectively. The first compartment can place the battery packs 111 and the main control box 112 of two battery clusters 110. One battery cluster 110 includes battery packs 111-11 to 111-14, and the main control box 112, and the other battery cluster 110 includes battery packs 111-21 to 111-24, and the main control box 112.

[0126] In an embodiment of the present application, a plurality of sub-compartments 1211 stacked in the height direction are provided in the first compartment body for accommodating the battery pack 111 and the main control box 112 of at least one battery cluster 110, thereby achieving rational utilization of the space in the first compartment body, improving the space utilization rate of the first compartment body, and further improving the space utilization rate of the box body 120.

[0127] In some embodiments of the present application, the external output panel of the battery groups 111 of at least one battery cluster 110 faces the first side in the first direction, wherein the number of the battery groups 111 in the at least one battery cluster 110 is greater than or equal to 2.

[0128] The external output panel of the battery pack 111 can be understood as a connection terminal of the battery pack 111. For example, it is a connection terminal when the battery packs 111 are connected in series.

[0129] That is, in the first compartment, the external output panels of the battery packs 111 of at least one battery cluster 110 are aligned in the first direction. For example, as shown in FIG6 , the first compartment has at least two battery clusters 110, and the external output panels of the battery packs 111 of the two battery clusters 110 face the same side in the first direction.

[0130] In the embodiment of the present application, by aligning the orientation of the external output panels of the battery packs 111 in the first compartment, the installation and maintenance of the battery cluster 110 are facilitated, and the installation and maintenance efficiency of the battery cluster 110 is improved. At the same time, the space of the box 120 can be reasonably utilized, thereby improving the space utilization rate of the box 120.

[0131] In some embodiments of the present application, at least one battery cluster 110 includes a main control box 112 , one end of which is connected to the battery pack 111 of the at least one battery cluster 110 , and the other end of which is connected to the busbar 200 .

[0132] Illustratively, there is at least one battery cluster 110 , which includes a main control box 112 . One end of the main control box 112 is connected to the battery pack 111 of the battery cluster 110 , and the other end of the main control box 112 is connected to the bus bar 200 .

[0133] Exemplarily, there are multiple battery clusters 110, and these multiple battery clusters 110 share a main control box 112. This main control box 112 may include multiple DC transmission circuits, each used for energy transmission between the multiple battery clusters 110. For example, as shown in Figures 6 and 7, there are two battery clusters 110, each of which includes four battery packs 111, namely, one battery cluster 110 includes battery packs 111-11 to 111-14, and the other battery cluster 110 includes battery packs 111-21 to 111-24. These two battery clusters 110 share a main control box 112, one end of which can be connected to the battery packs 111 of the two battery clusters 110, and the other end of which can be connected to the busbar.

[0134] In some embodiments of the present application, the other end of the main control box 112 can be connected to the busbar 200 via a busbar 130. That is, a busbar 130 is further provided between the main control box 112 and the busbar 200. For example, the other end of the main control box 112 of the battery cluster 110 is connected to one end of the busbar 130, and the other end of the busbar 130 is connected to the busbar 200.

[0135] In some embodiments of the present application, a converter 140 is further provided between the converging device 130 and the busbar 200. The converter 140 may be a bidirectional converter such as a power conversion system (PCS) to enable the energy storage system 100 to input or output energy.

[0136] In an embodiment of the present application, at least one battery cluster 110 in the first compartment may include a main control box 112, which can be used to transmit energy of at least one battery cluster 110. In this way, the space occupied by the main control box 112 in the first compartment can be reduced, thereby improving the space utilization of the box 120 or reducing the volume of the box 120.

[0137] In some embodiments of the present application, one battery cluster 110 among the at least one battery cluster 110 includes a main control box 112 .

[0138] For example, in the energy storage system 100 , each battery cluster 110 includes a main control box 112 .

[0139] In the embodiment of the present application, each battery cluster 110 includes a main control box 112, so as to flexibly realize the energy transmission of each battery cluster 110, and at the same time facilitate the installation and maintenance of each battery cluster 110 in the first compartment, thereby improving the efficiency of installation and maintenance of the battery cluster 110.

[0140] In some embodiments of the present application, a door 1212 is provided on the first side of the portion of the box body 120 corresponding to the first warehouse body.

[0141] That is, a portion of the box body 120 corresponding to the first compartment body is provided with a box door 1212 on one side of an external output panel of the battery pack 111 of at least one battery cluster 110 .

[0142] 8 , the portions of the box 120 corresponding to the plurality of bins 121 are all provided with doors 1212 on the same side of the first direction. That is, the box 120 may be provided with four doors 1212, and the four doors 1212 face the same side of the first direction.

[0143] Of course, the directions of the four doors 1212 of the box body 120 may also be different. For example, two doors 1212 face one side of the first direction, and the other two doors 1212 face the other side of the first direction.

[0144] As an example, the first compartment may include multiple battery clusters 110, which share a main control box 112. The battery groups 111 of the multiple battery clusters 110 and the external output panel of the main control box 112 are oriented in the same direction, both facing the side of the box body 120 where the box door 1212 is provided.

[0145] As another example, the first compartment may include multiple battery clusters 110, each of which includes a main control box 112. In other words, the first compartment includes multiple main control boxes 112. The battery packs 111 of the multiple battery clusters 110 and the external output panels of the main control boxes 112 of the multiple battery clusters 110 are oriented in the same direction, toward the side of the compartment 120 where the door 1212 is located.

[0146] In the embodiment of the present application, a box door 1212 is provided on one side of the external output panel of the battery pack 111 of at least one battery cluster 110 at a position of the box body 120 corresponding to the first compartment body, thereby facilitating the installation and maintenance of the battery cluster 110 and improving the efficiency of the installation and maintenance of the battery cluster 110.

[0147] In some embodiments of the present application, the external output panels of the battery groups 111 of at least one battery cluster 110 face both sides of the first direction, wherein the external output panels of the battery groups 111 of the same battery cluster 110 face the same direction, and the number of at least one battery cluster 110 is greater than or equal to 2.

[0148] The external output panels of the battery packs 111 in each battery cluster 110 are oriented in the same direction, while the external output panels of the battery packs 111 in multiple battery clusters 110 may be oriented differently. For example, FIG9 shows a view of the first compartment on both sides of the second direction. In the first compartment, at least one battery cluster 110 is present in two locations. One of the two battery clusters 110 includes battery packs 111-11 through 111-14, and the other includes battery packs 110 including battery packs 111-21 through 111-24. The external output panels of battery packs 111-11 through 111-14 face one side of the first direction, while the external output panels of battery packs 111-21 through 111-24 face the other side of the first direction.

[0149] In an embodiment of the present application, the output panels of the battery pack 111 in the first compartment are oriented toward both sides of the first direction, so that the direction of the battery pack 111 in the first compartment can be flexibly set, while also facilitating the installation and maintenance of each battery cluster 110 in the first compartment, thereby improving the efficiency of the installation and maintenance of the battery cluster 110.

[0150] In some embodiments of the present application, one battery cluster 110 in at least one battery cluster 110 includes a main control box 112 , one end of which is connected to the battery pack 111 of the battery cluster, and the other end of which is connected to the bus bar 200 .

[0151] For example, as shown in Figures 9 and 10 , one battery cluster 110 includes a main control box 112-1, while the other battery cluster 110 also includes a main control box 112-2. One end of main control box 112-1 is connected to battery pack 111-14 of the first battery cluster 110, and the other end of main control box 112-1 is connected to bus bar 200. One end of main control box 112-2 is connected to battery pack 111-24 of the other battery cluster 110, and the other end of main control box 112-2 is connected to bus bar 200.

[0152] In an embodiment of the present application, each battery cluster 110 in the first compartment may include a main control box 112. A main control box 112 can be used to transmit energy of a battery cluster 110, facilitate the installation and maintenance of each battery cluster 110 in the first compartment, and improve the efficiency of the installation and maintenance of the battery cluster 110.

[0153] In some embodiments of the present application, doors 1212 are provided on both sides of the first direction of the portion of the box body 120 corresponding to the first storage body.

[0154] In the first compartment, the number of at least one battery cluster 110 is greater than or equal to 2.

[0155] That is, in the first compartment, the external output panel of the battery pack 111 of at least one battery 110 faces both sides in the first direction, and the portion of the box 120 corresponding to the first compartment is provided with a door 1212 on both sides in the first direction. For example, as shown in FIG11 , the box 120 includes four compartments, and the portion of the box 120 corresponding to each compartment is provided with a door 1212 on both sides in the first direction.

[0156] In the embodiment of the present application, by providing doors 1212 on both sides of the first direction of the box body 120 corresponding to the first compartment, the installation and maintenance of each battery cluster 110 in the first compartment is facilitated, thereby improving the efficiency of the installation and maintenance of the battery cluster 110.

[0157] In some embodiments of the present application, the box body 120 includes multiple warehouse bodies 121, for example, including a first warehouse body and a second warehouse body, and the part of the box body 120 corresponding to the first warehouse body is provided with a box door on one side of the first direction, and the part of the box body 120 corresponding to the second warehouse body is provided with a box door on both sides of the first direction.

[0158] In some embodiments of the present application, in at least one battery cluster 110 , the external output panel of the main control box 112 of one battery cluster 110 and the external output panel of the battery pack 111 of the battery cluster 110 face the same direction.

[0159] That is, in the first compartment, the main control box 112 of each battery cluster 110 is oriented in the same direction as the external output panel of the battery pack 111 of the battery cluster 110 , as shown in FIG. 6 or FIG. 9 .

[0160] In the embodiment of the present application, by arranging the main control box 112 and the external output panel of the battery pack 111 in a battery cluster 110 in the same direction, the installation and maintenance of the battery cluster 110 are facilitated, and the space utilization of the box 120 can be improved.

[0161] In some embodiments of the present application, the energy storage system includes 8 battery clusters 110 , and the box 120 includes 4 compartments 121 arranged along the second direction, and one compartment 121 of the 4 compartments 121 is used to place 2 battery clusters 110 among the 8 battery clusters 110 .

[0162] As shown in FIG5 , the box 120 is provided with four compartments 121 along the second direction. Each compartment 121 can be used to place two battery clusters 110 .

[0163] In the embodiment of the present application, four compartments 121 arranged along the second direction are provided in the box 120, and one of the four compartments 121 can accommodate at least two battery clusters 110, thereby achieving a reasonable allocation of the space in the box 120 and improving the space utilization of the box 120.

[0164] In some embodiments of the present application, each battery cluster 110 of the eight battery clusters 110 includes four battery packs 111, and a compartment body 121 includes nine sub-compartments 1211 stacked along the height direction. The lowest sub-compartment 1211 of the nine sub-compartments 1211 is used to place the main control boxes 112 of the two battery clusters 110, and the remaining sub-compartments 1211 of the nine sub-compartments 1211 are used to place the eight battery packs 111 of the two battery clusters 110, respectively. The battery packs 111 placed in adjacent sub-compartments are battery packs 111 of different battery clusters 110, as shown in Figure 6 or Figure 9.

[0165] That is to say, in an embodiment of the present application, in a warehouse body 121, the main control boxes 111 of the two battery clusters 110 are placed in the lowest sub-compartment 1211 of the warehouse body 121, and the eight battery packs 111 of the two battery clusters 110 are stacked and placed in the remaining eight sub-compartments 1211, and the battery packs 111 in adjacent sub-compartments are respectively the battery packs 111 of the two battery clusters 110.

[0166] In an embodiment of the present application, nine sub-compartments 1211 stacked in the height direction are provided in the first compartment body for accommodating the battery packs 111 and the main control box 112 of the two battery clusters 110 , thereby achieving rational utilization of the space within the compartment body 121 , improving the space utilization rate of the compartment body 121 , and further improving the space utilization rate of the box body 120 .

[0167] In some embodiments of the present application, the external output panels of the battery groups 111 of the two battery clusters 110 are oriented toward one side of the first direction. The two battery clusters 110 further include a main control box 112. The external output panels of the battery groups 111 of the two battery clusters 110 are oriented in the same direction as the external output panel of the main control box 112. The main control box 112 is used to transmit energy between the two battery clusters 110, as shown in FIG6 .

[0168] In the embodiment of the present application, by aligning the orientation of the battery packs 111 of two battery clusters 110 and the external output panels of the main control box 112 in a single compartment 121, the installation and maintenance of the battery clusters 110 in a single compartment 121 are facilitated, thereby improving the installation and maintenance efficiency of the battery clusters 110. Furthermore, the space in the compartment 120 can be rationally utilized, thereby improving the space utilization rate of the compartment 120.

[0169] In some embodiments of the present application, the external output panels of the battery groups of the two battery clusters 110 are oriented on both sides of the first direction, each of the two battery clusters 110 includes a main control box 112, and the battery groups 111 of each battery cluster 110 in the two battery clusters 110 are oriented in the same direction as the external output panels of the main control box 112, as shown in Figure 9.

[0170] In the embodiment of the present application, the output panels of the battery pack 111 in a bin body 121 are oriented toward both sides of the first direction, so that the direction of the battery pack 111 in a bin body 121 can be flexibly set, and it is also convenient for the installation and maintenance of each battery cluster 110 in a bin body 121, which can improve the efficiency of the installation and maintenance of the battery cluster 110.

[0171] In some embodiments of the present application, as shown in FIG12 , the energy storage system 100 further includes one or more of the following: a thermal management device 150 for adjusting the temperature of the energy storage system 100; a fire-fighting device 160 for detecting, alarming, or extinguishing a fire in the energy storage system; and a power distribution device 180 for distributing power to electrical equipment in the energy storage system 100; wherein one or more of the thermal management device 150, the fire-fighting device 160, or the power distribution device 170 is arranged on one side of the box along the second direction.

[0172] The thermal management device 150 can lower the temperature of the energy storage system 100 when it is too high, and increase the temperature of the energy storage system 100 when it is too low. For example, the thermal management device 150 can include a heating module and a cooling module. The heating module or cooling module heats or cools the fluid in the fluid circulation loop, and then heat exchanges between the fluid and the battery 110 to adjust the temperature of the energy storage system. The fluid circulation loop can be arranged around the battery cluster 110.

[0173] The fire-fighting device 160 integrates detection, alarm, and fire-extinguishing functions. For example, it can detect the operating temperature of the energy storage system 110 and the presence of smoke in real time to determine whether there is a possibility of fire in the energy storage system 110. If it detects that a fire is about to occur in the energy storage system 110, the fire-fighting device 160 can promptly issue an alarm and take preemptive fire-fighting measures.

[0174] The power distribution device 170 can be used to distribute power to electrical devices in the energy storage system 100, such as a thermal management module.

[0175] 12 , the thermal management device 150 , the fire fighting device 160 and the power distribution device 170 are arranged on the left side of the box 120 along the second direction, and the thermal management device 150 , the fire fighting device 160 and the power distribution device 170 are arranged along the first direction.

[0176] In the embodiment of the present application, by arranging one or more of the thermal management device 150 , the fire protection device 160 and the power distribution device 170 on one side of the box 120 along the second direction, the space utilization of the box 120 can be improved.

[0177] In some embodiments of the present application, as shown in FIG13 , the battery cluster 110 further includes a master control unit 113 , one end of which is connected to a slave control unit 1112 for communicating with the slave control unit.

[0178] For example, the slave control unit 1112 in a battery cluster 110 may send the collected status information of the battery cells 1111 to the master control unit 113 , so that the master control unit 113 may determine the status information of the battery cluster 110 according to the status information of the battery cells 1111 .

[0179] The status information of the battery cluster 110 may include one or more of current information, voltage information, power information, or state of charge (SOC) information of the battery cluster 110 .

[0180] In the embodiment of the present application, the master control unit 113 is connected to the slave control unit 1112 to obtain the status information of the battery cells 110 in the battery cluster 110 , thereby accurately determining the status information of the battery cluster 110 .

[0181] In some embodiments of the present application, as shown in FIG13 , the energy storage system 100 further includes: a master control unit 150 , which is connected to the main control unit 113 and configured to communicate with the main control unit 113 .

[0182] For example, the main control unit 112 may send status information of the battery cluster 110 to the master control unit 180 , and the master control unit 180 may determine status information of the energy storage system 100 based on the status information sent by the main control units 112 of each battery cluster 110 .

[0183] The status information of the energy storage system 100 may include one or more of current information, voltage information, power information, or state of charge (SOC) information of the battery cluster 110 .

[0184] In some embodiments of the present application, the master control unit 180 may serve as a battery management unit of the energy storage system 100, configured to monitor and manage the energy storage system 100. For example, the master control unit 180 may monitor information such as the current, voltage, power, or temperature of the energy storage system 100. For example, the master control unit 180 may control the charge and discharge current and voltage of the energy storage system 100.

[0185] In some embodiments of the present application, the main control unit 113 may function as a battery management unit (BMU) for the battery cluster 110, monitoring and managing the battery cluster. The main control unit 113 may monitor information such as the current, voltage, power, or temperature of the battery cluster 110. For example, the main control unit 113 may control the charge and discharge current and voltage of the battery cluster 110.

[0186] In some embodiments of the present application, the main control unit 113 of the battery cluster 110 may be placed in the main control box 112 corresponding to the battery cluster 110. For example, as described above, the main control box 112 may house the electrical components of the battery cluster 110 for energy transmission within the battery cluster 110; the main control box 112 may also house the main control unit 113 of the battery cluster 110 for controlling energy transmission within the battery cluster 110.

[0187] In some embodiments of the present application, the master control unit 180 may also be connected to an energy management unit 300 , such as an energy management system (EMS), for communicating with the energy management unit 300 .

[0188] In some embodiments of the present application, the main control unit 180 may also be connected to the thermal management device 150 , and the main control unit 180 may be used to control the thermal management device 150 to perform heating or cooling.

[0189] In some embodiments of the present application, the master control unit 180 may also be connected to the fire fighting device 160. The master control unit 180 may be used to monitor the working status of the fire fighting device 160, such as the detection status, alarm status, or fire extinguishing status.

[0190] In the embodiment of the present application, by connecting the master control unit 180 with the main control unit 150 , the status information of the battery cluster 110 in the energy storage system 100 can be obtained, the status information of the energy storage system 100 can be determined, and the charging and discharging process of the energy storage system 100 can be reasonably controlled.

[0191] FIG14 is a microgrid system 1400 provided in an embodiment of the present application. The microgrid system 1400 may include the energy storage system 100 provided in an embodiment of the present application.

[0192] The content of the energy storage system 100 can be referred to the relevant description above, and this application will not go into details here.

[0193] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. An energy storage system, characterized in that: include: One or more battery clusters, the battery clusters comprising a plurality of battery cells, the size of the battery clusters along a first direction being greater than the size of the battery clusters along a second direction; A box body, used to accommodate the battery cluster, wherein a dimension of the box body along the first direction is smaller than a dimension of the box body along the second direction; Wherein, along the first direction, the size of the box matches the size of the battery cluster so that the box is used to place a row of battery clusters along the first direction, the first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the height direction of the box.

2. The energy storage system according to claim 1, characterized in that: The battery cluster includes one or more battery packs stacked in the height direction, and the battery pack includes one or more battery cells.

3. The energy storage system according to claim 2, characterized in that: The battery cells in the battery pack are connected in series.

4. The energy storage system according to claim 2 or 3, characterized in that: The battery pack also includes a slave control unit, which is connected to the battery cells of the battery pack and is used to collect status information of the battery cells in the battery pack, wherein the status information includes one or more of current information, voltage information, power information or state of charge (SOC) information.

5. The energy storage system according to claim 4, characterized in that: The battery pack includes 104 battery cells.

6. The energy storage system according to claim 5, characterized in that: The battery pack includes two slave control units, which are respectively used to collect status information of a first group of battery cells and a second group of battery cells among the 104 battery cells, and the number of battery cells in the first group of battery cells or the second group of battery cells does not exceed 56.

7. The energy storage system according to any one of claims 1 to 6, characterized in that: The battery cluster further includes a main control box, which is used for energy transmission of the battery cluster.

8. The energy storage system according to any one of claims 1 to 7, characterized in that: The box body includes a plurality of bins arranged along the second direction, the plurality of bins include a first bin, and the first bin is used to place at least one battery cluster among the plurality of battery clusters.

9. The energy storage system according to claim 8, characterized in that: The first compartment body includes a plurality of sub-compartments, which are stacked along the height direction and are used to place battery packs and a main control box of the at least one battery cluster, respectively.

10. The energy storage system according to claim 9, characterized in that: An external output panel of a battery pack of the at least one battery cluster faces a first side in the first direction, wherein the number of battery packs in the at least one battery cluster is greater than or equal to 2.

11. The energy storage system according to claim 10, characterized in that: The at least one battery cluster comprises a main control box, one end of the main control box is connected to the battery pack of the at least one battery cluster, and the other end of the main control box is connected to the bus bar.

12. The energy storage system according to claim 10, characterized in that: One of the at least one battery clusters comprises a main control box, one end of the main control box is connected to the battery pack of the battery cluster, and the other end of the main control box is connected to the bus bar.

13. The energy storage system according to any one of claims 10 to 12, characterized in that: The portion of the box body corresponding to the first warehouse body is provided with a box door on the first side.

14. The energy storage system according to claim 9, characterized in that: The external output panels of the battery groups of the at least one battery cluster face both sides of the first direction, wherein the external output panels of the battery groups of the same battery cluster face the same direction, and the number of the at least one battery cluster is greater than or equal to 2.

15. The energy storage system according to claim 14, characterized in that: One of the at least one battery clusters comprises a main control box, one end of the main control box is connected to the battery pack of the battery cluster, and the other end of the main control box is connected to the bus bar.

16. The energy storage system according to claim 15, characterized in that: The portion of the box body corresponding to the first warehouse body is provided with box doors on both sides of the first direction.

17. The energy storage system according to any one of claims 8 to 16, characterized in that: The main control box of one battery cluster in the at least one battery cluster and the external output panel of the battery pack are oriented in the same direction.

18. The energy storage system according to any one of claims 1 to 17, characterized in that: The energy storage system includes eight battery clusters, the box includes four storage bodies arranged along the second direction, and one storage body of the four storage bodies is used to place two battery clusters among the eight battery clusters.

19. The energy storage system according to claim 18, characterized in that: Each of the eight battery clusters includes four battery packs, and one bin body includes nine sub-bins stacked along the height direction, the lowest sub-bin of the nine sub-bins is used to place the main control boxes of the two battery clusters, and the remaining sub-bins of the nine sub-bins are respectively used to place the eight battery packs of the two battery clusters, wherein the battery packs placed in adjacent sub-bins are battery packs of different battery clusters.

20. The energy storage system according to claim 19, characterized in that: The external output panels of the battery groups of the two battery clusters face one side of the first direction, the two battery clusters include a main control box, the external output panels of the battery groups of the two battery clusters are oriented in the same direction as the external output panel of the main control box, and the main control box is used for energy transmission of the two battery clusters.

21. The energy storage system according to claim 19, characterized in that: The external output panels of the battery groups of the two battery clusters face both sides of the first direction, each of the two battery clusters includes a main control box, and the battery groups of each battery cluster in the two battery clusters are oriented in the same direction as the external output panels of the main control box.

22. The energy storage system according to any one of claims 1 to 21, characterized in that: The energy storage system further includes one or more of the following: a thermal management device for adjusting the temperature of the energy storage system; Fire-fighting device, used for detecting, alarming or extinguishing fire in the energy storage system; A power distribution device, used for distributing power to electrical equipment of the energy storage system; Wherein, one or more of the thermal management device, the fire-fighting device or the power distribution device is arranged on one side of the box along the second direction.

23. The energy storage system according to any one of claims 4 to 22, characterized in that: The battery cluster further includes a master control unit, which is connected to the slave control unit and is used for communicating with the slave control unit.

24. The energy storage system according to claim 23, characterized in that: The energy storage system further comprises: A general control unit is connected to the main control unit and is used for communicating with the main control unit.

25. A microgrid system, characterized in that: Comprising an energy storage system as described in any one of claims 1 to 24.

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