energy storage system

Abstract

The application discloses an energy storage system, which comprises a plurality of energy storage cabinets, each of which comprises a box body provided with a first cabin and a second cabin, the first cabin is used for containing one of a battery device and electrical equipment, the second cabin is used for containing the other of the battery device and the electrical equipment, the first cabin is provided with an openable and closable first cabin door, and the second cabin is provided with an openable and closable second cabin door, the plurality of energy storage cabinets comprise a first energy storage cabinet and a second energy storage cabinet, the first energy storage cabinet and the second energy storage cabinet are arranged and disposed in a first direction to form an energy storage group, the first cabin door of the first energy storage cabinet is disposed away from the first cabin door of the second energy storage cabinet in the first direction, and the second cabin door of the first energy storage cabinet and the second cabin door of the second energy storage cabinet are disposed towards the same side in a second direction, and the first direction and the second direction are disposed in intersection. In this way, the occupied space of the energy storage system is reduced, and the equipment in the second cabin can be installed and maintained on the same side, and the convenience is stronger.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to an energy storage system. Background Technology

[0002] Energy storage systems typically consist of multiple energy storage cabinets, which can be used in parallel to increase the system's capacity. Each cabinet generally includes a housing and electrical equipment and battery packs housed within it. In related technologies, energy storage cabinets in energy storage systems offer limited convenience for the installation and maintenance of electrical equipment and batteries, and they also require a large footprint, wasting land resources. Utility Model Content

[0003] This application provides an energy storage system.

[0004] The energy storage system of this application includes multiple energy storage cabinets, each of which includes a housing. The housing has a first compartment and a second compartment. The first compartment is used to accommodate one of a battery device and an electrical device, and the second compartment is used to accommodate the other of a battery device and an electrical device. The first compartment has an openable and closable first door, and the second compartment has an openable and closable second door. The plurality of energy storage cabinets include a first energy storage cabinet and a second energy storage cabinet. The first energy storage cabinet and the second energy storage cabinet are arranged in a first direction to form an energy storage group. The first door of the first energy storage cabinet is located away from the first door of the second energy storage cabinet in the first direction. The second door of the first energy storage cabinet and the second door of the second energy storage cabinet face the same side in a second direction. The first direction and the second direction intersect.

[0005] In the energy storage system of this application embodiment, the first door of the first energy storage cabinet in the energy storage group is disposed away from the first door of the second energy storage cabinet in the first direction. This allows the two energy storage cabinets in the energy storage group to be disposed close to each other without affecting the opening of their respective first doors, thus reducing the footprint of the energy storage system. Furthermore, the second doors of the two energy storage cabinets in the energy storage group face the same side, so that the equipment inside the second compartment can be installed and maintained on the same side, which is more convenient.

[0006] In some embodiments, the first direction is the width direction of the energy storage cabinet, and the second direction is the length direction of the energy storage cabinet. This results in a smaller length space occupied by each energy storage unit, which is beneficial for installing each energy storage unit on the ground.

[0007] In some embodiments, the first compartment is used to house the battery device, and the second compartment is used to house the electrical equipment. This arrangement aligns the electrical equipment with the second compartment door, facilitating maintenance and wiring of the electrical equipment.

[0008] In some embodiments, in each energy storage group, the sides of the first and second energy storage cabinets with the second hatch are aligned along the first direction. This results in a larger overlap between the two energy storage cabinets in each group along the arrangement direction, reducing the land space required.

[0009] In some embodiments, the total area of ​​the side where the first hatch is located is larger than the area of ​​the side where the second hatch is located. This allows the first hatch to be positioned to correspond to a larger first compartment, facilitating the installation and maintenance of equipment such as battery devices within the first compartment.

[0010] In some embodiments, a first vent is provided on the top side of the second compartment, and a second vent is provided on the side where the second door is located. Both the first and second vents are connected to the interior of the second compartment. Thus, when the energy storage cabinet uses the first and second vents to dissipate heat from the electrical equipment, the airflow will not interfere with other energy storage cabinets in the same group, thereby improving the heat dissipation efficiency of the electrical equipment.

[0011] In some embodiments, the second vent is positioned above the second door, and the electrical equipment includes a thermal management device directly opposite the second vent. This thermal management device regulates the temperature of the battery unit. Thus, with the thermal management device close to the top of the energy storage cabinet, heat is dissipated through the first and second vents, resulting in a shorter airflow path and higher heat dissipation efficiency.

[0012] In some embodiments, in each energy storage group, the distance between the first energy storage cabinet and the second energy storage cabinet in the first direction is greater than or equal to 50 mm. This closer proximity between the two energy storage cabinets in each energy storage group reduces the footprint of the energy storage system.

[0013] In some embodiments, the battery device is cooled by liquid cooling. This allows for rapid heat dissipation, enabling the energy storage cabinets to meet heat dissipation requirements even when placed close together.

[0014] In some embodiments, in each group of said energy storage units, the first compartments of the first energy storage unit and the second energy storage unit are symmetrically distributed about the center plane between the first energy storage unit and the second energy storage unit; and / or, In each of the energy storage groups, the second compartments of the first energy storage cabinet and the second energy storage cabinet are symmetrically distributed about the center plane between the first energy storage cabinet and the second energy storage cabinet.

[0015] In this way, the first and / or second compartments of each energy storage cabinet have basically the same volume, which allows for the arrangement of battery devices and other equipment with the same or similar performance, so that the performance of each energy storage cabinet is basically the same, which is beneficial for the management of charging and discharging of the energy storage cabinet.

[0016] In some embodiments, the energy storage system includes two sets of energy storage units arranged side-by-side in the second direction. The first doors of the first and second energy storage cabinets in different sets face the same side, while the second doors of the first and second energy storage cabinets in different sets face opposite sides. This arrangement of the two sets of energy storage units increases the electrical capacity of the energy storage system. Furthermore, the arrangement of the first and second doors of the different sets of energy storage cabinets ensures that the installation and maintenance of the two sets of energy storage units do not interfere with each other, improving the maintenance efficiency of the energy storage system.

[0017] In some implementations, the four energy storage cabinets in the two energy storage groups are arranged in a 2x2 matrix. This arrangement of the four energy storage cabinets is relatively compact, reducing the required floor space.

[0018] In some implementations, the electrical equipment of the first and second energy storage cabinets in the same group is connected to the same external booster device via cables. Thus, since the electrical equipment of the two energy storage cabinets in the same group is located on the same side of the energy storage cabinet, when connecting the booster device, the cables do not need to bypass other sides of the energy storage box, shortening the cable length. This not only improves the installation and operating efficiency of the energy storage system but also reduces its cost.

[0019] In some embodiments, there are multiple first energy storage cabinets or multiple second energy storage cabinets. In the second direction, one side of one of the energy storage groups is provided with the first energy storage cabinet or the second energy storage cabinet. The second door of the first energy storage cabinet or the second energy storage cabinet is located away from the energy storage group along the second direction.

[0020] In this way, multiple energy storage cabinets in the energy storage system can increase the electrical capacity of the energy storage system. Furthermore, the first and second doors of multiple energy storage cabinets do not interfere with each other, which saves space and improves the efficiency of installation and maintenance of the energy storage cabinets.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein: Figure 1This is a three-dimensional schematic diagram of the energy storage system according to an embodiment of this application; Figure 2 This is a schematic diagram of the layout of the energy storage group according to an embodiment of this application; Figure 3 This is a side view of the energy storage group according to an embodiment of this application; Figure 4 This is a perspective view of the energy storage cabinet according to an embodiment of this application; Figure 5 This is a schematic diagram of the layout of the energy storage system according to an embodiment of this application; Figure 6 This is a side view of the energy storage system according to an embodiment of this application; Figure 7 This is another schematic diagram of the layout of the energy storage system according to an embodiment of this application; Figure 8 This is a schematic diagram of the energy storage system according to an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures: 1000-Energy storage system, 100-Energy storage group, 10-Energy storage cabinet, 11-Box, 111-First compartment, 112-Second compartment, 12-Electrical equipment, 13-First door, 14-Second door, 141-First vent, 142-Second vent, 10a-First energy storage cabinet, 10b-Second energy storage cabinet, 200-Cables, 300-Boosting equipment. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0028] In related technologies, energy storage systems generally include multiple energy storage cabinets, which can be used in parallel to increase the system's capacity. Each energy storage cabinet typically includes a housing and electrical equipment and battery units housed within it. Each energy storage cabinet has an identical structure. Each cabinet's housing has a first compartment and a second compartment; the electrical equipment is housed in the second compartment, and the battery units are housed in the first compartment.

[0029] To facilitate the installation and maintenance of electrical equipment and battery devices, the enclosure is equipped with a first door and a second door, which are located on different sides of the enclosure. For example, the first door is located on the side formed by the height and length of the enclosure, and the second door is located on the side formed by the height and width of the enclosure.

[0030] When multiple energy storage cabinets are installed side-by-side, because each cabinet has the same structure, if the second doors of two cabinets face the same side, their first doors also face the same side. To allow the first doors to open smoothly outwards, a large space must be reserved between the two cabinets. For example, the distance between two cabinets needs to be greater than 2 meters. This results in a large footprint for the energy storage system and low land resource utilization.

[0031] In addition, the decentralized layout of energy storage cabinets requires more personnel or more time to complete daily inspection and maintenance. The decentralized layout may lead to low efficiency in troubleshooting and maintenance, or even missed detection, and high maintenance complexity.

[0032] However, if the first doors of the two energy storage cabinets are arranged back-to-back to reduce space requirements, then the second doors of the two cabinets will also be arranged back-to-back, facing opposite directions. Maintaining the electrical equipment of the different energy storage cabinets will require walking around the side of the other cabinet, resulting in poor maintenance convenience.

[0033] Please see Figures 1-4 The energy storage system 1000 of this application embodiment includes a plurality of energy storage cabinets 10, each energy storage cabinet 10 including a box 11, the box 11 having a first compartment 111 and a second compartment 112, the first compartment 111 being used to accommodate one of the battery device and electrical equipment, the second compartment 112 being used to accommodate the other of the battery device and electrical equipment, the first compartment 111 having an openable and closable first door 13, and the second compartment 112 having an openable and closable second door 14; Multiple energy storage cabinets 10 include a first energy storage cabinet 10a and a second energy storage cabinet 10b. The first energy storage cabinet 10a and the second energy storage cabinet 10b are arranged in a first direction X to form an energy storage group 100. The first door 13 of the first energy storage cabinet 10a is located away from the first door 13 of the second energy storage cabinet 10b in the first direction X. The second door 14 of the first energy storage cabinet 10a and the second door 14 of the second energy storage cabinet 10b face the same side in the second direction Y. The first direction X and the second direction Y are intersecting.

[0034] In the energy storage system 1000 of this application embodiment, the first door 13 of the first energy storage cabinet 10a in the energy storage group 100 is positioned away from the first door 13 of the second energy storage cabinet 10a in the first direction X. This allows the two energy storage cabinets 10 in the energy storage group 100 to be placed close together without affecting the opening of their respective first doors 13, thus reducing the footprint of the energy storage system 1000. Furthermore, the second doors 14 of the two energy storage cabinets 10 (the first energy storage cabinet 10a and the second energy storage cabinet 10b) in the energy storage group 100 face the same side, thereby allowing the equipment inside the second compartment 112 to be installed and maintained from the same side, which enhances convenience.

[0035] Specifically, the energy storage system 1000 is an electrical energy storage device that can be connected to the power grid to achieve peak shaving and valley filling, peak regulation and frequency regulation, emergency backup power, and the absorption of renewable energy. The enclosure 11 of the energy storage cabinet 10 can be a shipping container, which facilitates the transportation of the energy storage cabinet 10.

[0036] The first compartment 111 and the second compartment 112 of the enclosure 11 are arranged side by side. To improve the safety of the energy storage cabinet 10, the internal spaces of the first compartment 111 and the second compartment 112 can be isolated from each other. The battery device is, for example, a battery pack or a battery module. There can be multiple battery devices, and multiple battery devices can form a battery cluster. The electrical equipment includes, for example, thermal management equipment, power distribution equipment, etc.

[0037] The first hatch 13 and the second hatch 14 are respectively located on different sides of the container 11, so that both the first hatch 13 and the second hatch 14 have sufficient space to be arranged without interfering with each other. Multiple first hatches 13 or multiple second hatches 14 can be arranged on the same side of the container 11.

[0038] In a set of energy storage units 100, the first doors 13 of the first energy storage cabinet 10a and the second energy storage cabinet 10b are arranged opposite to each other, so that when the first door 13 is opened, it will not interfere with the other energy storage cabinet 10. The second doors 14 of the first energy storage cabinet 10a and the second energy storage cabinet 10b face the same side for easy maintenance.

[0039] Therefore, the energy storage system 1000 of the present application can effectively save the area of ​​the site. More energy storage systems 1000 and more electricity can be installed in the same area, and more profits can be earned. In addition, since the energy storage cabinets 10 are more concentrated, maintenance personnel do not need to spend more effort traveling between energy storage cabinets 10 in different locations.

[0040] It should be noted that the footprint of the energy storage system 1000 is the space required for the installation of multiple energy storage cabinets 10, including the empty space formed between the multiple energy storage cabinets 10.

[0041] Please see Figures 1-3 In some embodiments, the first direction X is the width direction of the energy storage cabinet 10, and the second direction Y is the length direction of the energy storage cabinet 10. That is to say, the first energy storage cabinet 10a and the second energy storage cabinet 10b of each energy storage group 100 are arranged side by side along the width direction of the energy storage cabinet 10. In this way, the length space occupied by each energy storage group 100 is small, which is beneficial for the installation and arrangement of each energy storage group 100 on the ground.

[0042] Specifically, the energy storage cabinet 10 is roughly rectangular. The arrangement of two energy storage cabinets 10 side by side along their width is also called a back-to-back arrangement. This ensures that after the two energy storage cabinets 10 are arranged, the total length of each energy storage group 100 is still the length of a single energy storage cabinet 10, thus occupying less space.

[0043] In some embodiments, the first compartment 111 is used to house the battery device, and the second compartment 112 is used to house the electrical equipment 12. This aligns the electrical equipment 12 with the second door 14, facilitating maintenance and wiring of the electrical equipment 12.

[0044] Please see Figures 1-3 In some embodiments, in each energy storage group 100, the sides of the first energy storage cabinet 10a and the second energy storage cabinet 10b with the second hatch 14 are aligned along the first direction X. Alternatively, in each energy storage group 100, the sides of the two energy storage cabinets 10 with the second hatch 14 are aligned along the arrangement direction of the energy storage cabinets 10. In this way, the overlapping area of ​​the two energy storage cabinets 10 in each energy storage group 100 along the arrangement direction is relatively large, which can reduce the land space occupied.

[0045] Specifically, in a set of energy storage units 100, the two energy storage cabinets 10 can have the same external dimensions, or in other words, the length, width, and height of the two energy storage cabinets 10 can be equal. The two energy storage cabinets 10 are aligned on the side where the second door 14 is located, which means that the lengths of the two energy storage cabinets 10 can be aligned. This not only reduces the land space occupied, but also makes the installation of the two energy storage cabinets 10 more consistent, which is beneficial for the wiring of electrical equipment 12 in the second compartment 112 to external equipment.

[0046] Please see Figures 1-2 In some embodiments, the total area on the side where the first door 13 is located is greater than the area on the side where the second door 14 is located. Generally, in order to increase the electrical capacity of the energy storage cabinet 10, the volume of the first compartment 111 is greater than the volume of the second compartment 112, so that the first compartment 112 can accommodate more battery devices. To facilitate the installation and maintenance of the battery devices, multiple first doors 13 are generally provided, and the multiple first doors 13 are arranged at different positions along the second direction Y of the first compartment 111.

[0047] The first hatch 13 can be located on the side formed by the height and length of the housing 11, and the second hatch 14 can be located on the side formed by the height and width of the housing 11. Therefore, the location of the first hatch 13 can correspond to the larger volume of the first housing 111, making it easier to install and maintain equipment such as battery devices inside the first housing 111.

[0048] Please see Figure 1 , Figure 3 and Figure 4 In some embodiments, the top side of the second compartment 112 is provided with a first ventilation opening 141, and the second compartment 112 is provided with a second ventilation opening 142 on the side where the second door 14 is located. Both the first ventilation opening 141 and the second ventilation opening 142 are connected to the interior of the second compartment 112.

[0049] It is understandable that in the same energy storage group 100, since two energy storage cabinets 10 are arranged along the first direction X, and multiple energy storage groups 100 can be arranged along the first direction X or the second direction Y, if the ventilation opening is set on the side or opposite side of the energy storage cabinet 10 along the first direction X, the airflow at the ventilation opening is likely to interfere with the adjacent energy storage cabinet 10, forming a heat island effect and resulting in poor ventilation.

[0050] In this embodiment of the application, the top side of the second compartment 112 is provided with a first ventilation opening 141, and the second compartment 112 is provided with a second ventilation opening 142 on the side where the second door 14 is located. When the energy storage cabinet 10 uses the first ventilation opening 141 and the second ventilation opening 142 to dissipate heat from the electrical equipment 12, the airflow will not interfere with the other energy storage cabinet 10 in the same group, which can improve the heat dissipation efficiency of the electrical equipment 12.

[0051] It should be noted that one of the first vent 141 and the second vent 142 is an air inlet, and the other is an air outlet. Both the second vent 142 and the second vent 142 may include multiple small holes.

[0052] Please see Figure 3 In some embodiments, the second vent 142 is located above the second door 14, and the electrical equipment 12 includes a thermal management device that faces the second vent 142. Thus, the thermal management device is positioned at the top of the energy storage cabinet 10, and heat is dissipated through the first vent 141 and the second vent 142, resulting in a shorter airflow path and higher heat dissipation efficiency.

[0053] In one example, electrical equipment 12 may include fire-fighting equipment and power distribution equipment located below the thermal management equipment, both of which are directly opposite the second hatch 14.

[0054] It should be noted that the thermal management equipment of electrical equipment 12 can perform thermal management on the battery device to regulate the temperature of the battery device; the fire-fighting equipment can realize the fire-fighting function to prevent the spread of fire after the energy storage cabinet 10 is damaged; and the power distribution equipment can manage the charging and discharging of the battery device.

[0055] In some embodiments, in each energy storage group 100, the distance between the first energy storage cabinet 10a and the second energy storage cabinet 10b in the first direction X is greater than or equal to 50m. Alternatively, in each energy storage group 100, the distance between two energy storage cabinets 10 is greater than or equal to 50mm.

[0056] For example, the distance between two energy storage cabinets 10 can be 50mm, 100mm, 500mm, 1000mm, or 2000mm. This results in a closer distance between the two energy storage cabinets 10 in each energy storage group 100, reducing the footprint of the energy storage system 1000. It should be noted that the distance between the two energy storage cabinets 10 is the minimum distance between them.

[0057] Specifically, in the two energy storage cabinets 10, the side of the cabinet 11 that is close to each other should not have any external hanging parts or protruding structures, so as to minimize the distance between the two energy storage cabinets 10.

[0058] In some embodiments, the battery device is cooled by liquid cooling. As one of the components in the energy storage cabinet 10 that generates significant heat, the battery device produces a large amount of heat during charging and discharging. When two energy storage cabinets 10 are arranged close together, the limited space between them obstructs the heat dissipation path. In this case, liquid cooling of the battery device allows for faster heat dissipation, thus ensuring that the energy storage cabinets 10 can meet their heat dissipation requirements even when the two cabinets are arranged close together.

[0059] Specifically, the energy storage cabinet 10 may include a liquid cooling system. The liquid cooling plate of the liquid cooling system can be thermally connected to the battery device. Through the heat exchange medium of the liquid cooling system, the heat generated by the battery device can be carried away, thereby reducing the battery device's heat output. Of course, the liquid cooling system can also heat the battery device when the ambient temperature is low, so that the battery device is at a suitable operating temperature, preventing lithium deposition and capacity decay.

[0060] In order to improve the available power of the energy storage system 1000, the thermal management efficiency control of the two energy storage cabinets 10 in a group of energy storage groups 100 is consistent.

[0061] In some embodiments, fire-fighting equipment may also be installed in the first compartment 111. The fire-fighting equipment can suppress the risk of overheating of the battery device from the source through real-time gas monitoring and temperature monitoring, respond in milliseconds, accurately extinguish the fire source, and prevent the spread of heat.

[0062] The enclosure 11 can be equipped with a fire-resistant layer, forming a heat insulation barrier at high temperatures to delay the intrusion of external fire and ensure that the internal battery devices are not ignited within a specific time, thus buying critical time for fire response. Furthermore, the fire-resistant materials used maintain their strength at high temperatures, preventing the steel structure of enclosure 11 from deforming and collapsing, and avoiding secondary damage.

[0063] Please see Figures 1-3In some embodiments, in each energy storage group 100, the first compartments 111 of the first energy storage cabinet 10a and the second energy storage cabinet 10b are symmetrically distributed about the center plane between the first energy storage cabinet 10a and the second energy storage cabinet 10b. Alternatively, in each energy storage group 100, the first compartments 111 of the two energy storage cabinets 10 are symmetrically distributed about the center plane between the two energy storage cabinets 10. Thus, the volume of the first compartment 111 of each energy storage cabinet 10 is substantially the same, allowing for the arrangement of battery devices and other equipment with similar or identical performance, ensuring that the performance of each energy storage cabinet 10 is substantially the same, which is beneficial for managing the charging and discharging of the energy storage cabinets 10.

[0064] Please see Figures 1-3 In some embodiments, in each energy storage group 100, the second compartment 112 of the first energy storage cabinet 10a is symmetrically distributed about the center plane between the first energy storage cabinet 10a and the second energy storage cabinet 10b. Alternatively, in each energy storage group 100, the second compartments 112 of the two energy storage cabinets 10 are symmetrically distributed about the center plane between the two energy storage cabinets 10.

[0065] In this way, the volume of the second compartment 112 of each energy storage cabinet 10 is basically the same, which allows for the arrangement of battery devices and other equipment with the same or similar performance, so that the performance of each energy storage cabinet 10 is basically the same, which is beneficial for the management of the charging and discharging of the energy storage cabinet 10.

[0066] The central plane mentioned above is a virtual plane located between the two energy storage cabinets 10. The central plane is located at the center between the two energy storage cabinets 10, or in other words, the distance between the two energy storage cabinets 10 and the central plane is equal.

[0067] Please see Figure 1 , Figure 5 and Figure 6 In some embodiments, the energy storage system 1000 includes two energy storage groups 100 arranged side-by-side in a second direction Y. The first doors 13 of the first energy storage cabinet 10a and the second energy storage cabinet 10b of different groups face the same side, while the second doors 14 of the first energy storage cabinet 10a and the second energy storage cabinet 10b of different groups face opposite sides. Alternatively, the first doors 13 of two energy storage cabinets 10 of different groups that are arranged adjacent to each other face the same side, while the second doors 14 of the energy storage cabinets 10 of different groups face opposite sides.

[0068] It is understood that the two energy storage groups 100 include four energy storage cabinets 10, and the four energy storage cabinets 10 can increase the electrical capacity of the energy storage system 1000. When the two energy storage groups 100 are arranged side by side, two sides of each energy storage cabinet 10 face the other energy storage cabinet 10, so the side facing the other energy storage cabinet 10 will be blocked.

[0069] Therefore, the first doors 13 of two energy storage cabinets 10 that are in different groups and are arranged side by side face the same side, and the second doors 14 of the energy storage cabinets 10 that are in different groups face opposite sides, so that the first doors 13 and the second doors 14 of the two energy storage groups 100 can be opened.

[0070] In summary, the two sets of energy storage units 100 can increase the electrical capacity of the energy storage system 1000. In addition, the arrangement of the first door 13 and the second door 14 of the different sets of energy storage cabinets 10 ensures that the installation and maintenance of the two sets of energy storage units 100 do not interfere with each other, thereby improving the maintenance efficiency of the energy storage system 1000.

[0071] Please see Figure 1 and Figure 5 In some embodiments, the four energy storage cabinets 10 in the two energy storage groups 100 are arranged in a 2*2 matrix. Alternatively, the four energy storage cabinets 10 are arranged in two rows and two columns, with the two energy storage cabinets 10 in each row aligned and the two energy storage cabinets 10 in each column aligned. This arrangement of the four energy storage cabinets 10 is relatively compact, reducing the space required.

[0072] In one embodiment, the external structure of the four energy storage cabinets 10 in the two energy storage groups 100 can be arranged in a centrally symmetrical manner about the center of the arrangement.

[0073] In some embodiments, the two energy storage units 100 are arranged along the length of the energy storage cabinet 10. In this way, the two energy storage units 100 are arranged more compactly, which can reduce the space occupied.

[0074] like Figure 1 As shown in the orientation, the length direction of the energy storage cabinet 10 is left and right, with one energy storage group 100 located on the left and the other energy storage group 100 located on the right.

[0075] Please see Figure 7 In some embodiments, there are multiple first energy storage cabinets 10a or multiple second energy storage cabinets 10b. In the second direction Y, one side of one energy storage group 100 is provided with a first energy storage cabinet 10a or a second energy storage cabinet 10b. The second door 14 provided on one side of the energy storage group 100, which is provided with a first energy storage cabinet 10a or a second energy storage cabinet 10b, is disposed away from the energy storage group 100 along the second direction Y.

[0076] Alternatively, in some embodiments, the energy storage system 1000 includes three energy storage cabinets 10, wherein two energy storage cabinets 10 form a group of energy storage groups 100, and the third energy storage cabinet 10 is arranged adjacent to and parallel to one of the energy storage cabinets 10 in the energy storage group 100. The first door 13 of the third energy storage cabinet 10 and the energy storage cabinet 10 arranged parallel to it face the same side, and the second door 14 faces the opposite side.

[0077] In this way, the three energy storage cabinets 10 can increase the electrical capacity of the energy storage system 1000, and the first door 13 and the second door 14 of the three energy storage cabinets 10 do not interfere with each other, which saves space and improves the efficiency of installation and maintenance of the energy storage cabinets 10.

[0078] like Figure 7 As shown, the first energy storage cabinet 10a on the left and the second energy storage cabinet 10b on the right are aligned along their length, a configuration also known as a side-by-side arrangement. Since the first doors 13 of both the first energy storage cabinet 10a on the left and the second doors 10b on the right face the same side, while the second doors 14 face opposite sides, the left energy storage cabinet 10a and the right energy storage cabinet 10b do not interfere with each other when the doors are in use.

[0079] exist Figure 7 In the implementation of the method, the energy storage system 1000 has a reserved space. If it is necessary to increase the electrical capacity of the energy storage system 1000, another energy storage cabinet 10 can be arranged in the reserved space to form an energy storage system 1000 with 4 energy storage cabinets 10.

[0080] Please see Figure 8 In some embodiments, the electrical equipment 12 of the first energy storage cabinet 10a and the second energy storage cabinet 10b in the same group are connected to the same external booster device 300 via cables 200. Alternatively, the electrical equipment 12 of the two energy storage cabinets 10 in the same group are connected to the same external booster device 300 via cables 200.

[0081] Thus, since the electrical equipment 12 of the two energy storage cabinets 10 in the same group are set on the same side of the energy storage cabinet 10, when the cable 200 is connected to the booster device 300, the cable 200 does not need to go around the other sides of the energy storage box, which can shorten the length of the cable 200. This can not only improve the installation efficiency and operating efficiency of the energy storage system 1000, but also reduce the cost of the energy storage system 1000.

[0082] Specifically, the boost device 300 includes a boost transformer. Further, the boost device 300 may also include a power conversion system (PCS). When the boost device 300 includes both a boost transformer and a power conversion system, the boost device 300 may also be referred to as an integrated boost inverter.

[0083] The boost converter 300 is the core component of the energy storage system 1000. It converts the electrical energy stored in the battery into AC power to supply the grid or users. The boost converter 300 mainly consists of an inverter, transformer, and controller. Its primary functions are to convert DC power into AC power, control the input and output of electrical energy, and ensure the safety and stability of the system.

[0084] The booster unit 300 is connected to the electrical equipment 12 in the energy storage cabinet 10 via a cable 200 to improve the power transmission capacity. When the second doors 14 of the two energy storage cabinets 10 in the same group face the same side, the cable 200 can be connected to the booster unit 300 from the second door 14 side. The extension path of the cable 200 is shorter, saving material costs and facilitating wiring and installation. Current loss is also reduced, improving the energy efficiency of the energy storage system 1000.

[0085] It should be noted that energy storage cabinets 10 in different groups can be connected to the same booster device 300 or to different booster devices 300. For example, four energy storage cabinets 10 in two energy storage groups 100 can be connected to the same booster device 300.

[0086] In summary, the energy storage system 1000 according to the embodiments of this application has at least the following effects: 1. The energy storage system 1000 offers high layout flexibility, good scalability, and high space utilization; 2. The energy storage system 1000 has high efficiency in troubleshooting and maintenance; 3. When 1000 energy storage systems are connected in parallel, power loss can be reduced; 4. The energy storage system 1000 has shorter cable lengths, lower costs, and lower energy loss; 5. If the same energy storage project needs to increase its energy storage capacity, the originally reserved space can be used to add energy storage cabinet 10 for parallel storage, which has a high space utilization rate and can bring greater benefits and profits to customers. 6. The installation, maintenance, use and management of the 1000 energy storage system are more centralized, saving operation and maintenance costs while increasing the density of the 1000 energy storage system deployment in the site.

[0087] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0089] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy storage system, characterized in that, It includes multiple energy storage cabinets, each of which includes a housing. The housing has a first compartment and a second compartment. The first compartment is used to accommodate one of a battery device and an electrical device, and the second compartment is used to accommodate the other of a battery device and an electrical device. The first compartment has an openable and closable first door, and the second compartment has an openable and closable second door. The plurality of energy storage cabinets include a first energy storage cabinet and a second energy storage cabinet. The first energy storage cabinet and the second energy storage cabinet are arranged in a first direction to form an energy storage group. The first door of the first energy storage cabinet is located away from the first door of the second energy storage cabinet in the first direction. The second door of the first energy storage cabinet and the second door of the second energy storage cabinet face the same side in a second direction. The first direction and the second direction intersect.

2. The energy storage system according to claim 1, characterized in that, The first direction is the width direction of the energy storage cabinet, and the second direction is the length direction of the energy storage cabinet.

3. The energy storage system according to claim 1, characterized in that, The first compartment is used to house the battery device, and the second compartment is used to house the electrical equipment.

4. The energy storage system according to claim 3, characterized in that, The electrical equipment of the first and second energy storage cabinets in the same group is connected to the same external booster device via cables.

5. The energy storage system according to claim 3, characterized in that, The total area on the side where the first hatch is located is greater than the area on the side where the second hatch is located.

6. The energy storage system according to claim 3, characterized in that, The second compartment has a first ventilation opening on its top side and a second ventilation opening on the side where the second door is located. Both the first ventilation opening and the second ventilation opening are connected to the interior of the second compartment.

7. The energy storage system according to claim 6, characterized in that, The second vent is located above the second door. The electrical equipment includes a thermal management device that faces the second vent and is used to regulate the temperature of the battery device.

8. The energy storage system according to any one of claims 1-7, characterized in that, In each of the energy storage groups, the first energy storage cabinet and the second energy storage cabinet are aligned along the first direction on the side where the second door is located.

9. The energy storage system according to any one of claims 1-7, characterized in that, In each of the energy storage groups, the distance between the first energy storage cabinet and the second energy storage cabinet in the first direction is greater than or equal to 50 mm.

10. The energy storage system according to any one of claims 1-7, characterized in that, The battery device is cooled by liquid cooling.

11. The energy storage system according to any one of claims 1-7, characterized in that, In each of the energy storage groups, the first compartments of the first energy storage cabinet and the second energy storage cabinet are symmetrically distributed about the center plane between the first energy storage cabinet and the second energy storage cabinet; and / or, In each of the energy storage groups, the second compartments of the first energy storage cabinet and the second energy storage cabinet are symmetrically distributed about the center plane between the first energy storage cabinet and the second energy storage cabinet.

12. The energy storage system according to any one of claims 1-7, characterized in that, The energy storage system includes two sets of energy storage units, which are arranged side by side in the second direction. The first doors of the first energy storage cabinet and the second energy storage cabinet of different sets face the same side, and the second doors of the first energy storage cabinet and the second energy storage cabinet of different sets face opposite sides.

13. The energy storage system according to claim 12, characterized in that, The four energy storage cabinets in the two energy storage groups are arranged in a 2*2 matrix.

14. The energy storage system according to any one of claims 1-7, characterized in that, There are multiple first energy storage cabinets or multiple second energy storage cabinets. In the second direction, one side of one of the energy storage groups is provided with the first energy storage cabinet or the second energy storage cabinet. The second door of the first energy storage cabinet or the second energy storage cabinet is located away from the energy storage group along the second direction.

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