Energy storage device and energy storage system

Abstract

An energy storage device and an energy storage system. The energy storage device comprises a first module (1) and a second module (2). The first module (1) comprises a first compartment body (11) and a first battery device (12), wherein the first compartment body (11) accommodates the first battery device (12). The second module (2) comprises a second compartment body (20) and a first heat exchange assembly (220), wherein the second compartment body (20) accommodates the first heat exchange assembly (220). The second module (2) is stacked on the upper side of the first module (1), and the second compartment body (20) is connected to the first compartment body (11). In the structure described above, since the energy storage device comprises the first module (1) and the second module (2), which are stacked, and the first module (1) and the second module (2) comprise the first compartment body (11) for accommodating the first battery device (12), and the second compartment body (20) for accommodating the first heat exchange assembly (220), respectively, during assembly of the energy storage device, it is only necessary to connect the first compartment body (11) in the assembled first module (1) to the second compartment body (20) in the assembled second module (2), without needing to install each functional component of the energy storage device at an installation site, thereby being conducive to improving the installation convenience of the energy storage device.

Description

Energy storage devices and energy storage systems Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an energy storage device and energy storage system. Background Technology

[0002] The first battery device has advantages such as high specific energy and high power density. It is widely used in energy storage devices such as energy storage containers or energy storage cabinets. Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems or temporary power supply systems, etc.

[0003] Due to the advantages of large capacity and high degree of integration, energy storage devices are being used in an increasingly wide range of applications. As a result, how to improve the ease of installation of energy storage devices is attracting more and more attention from those skilled in the art.

[0004] Summary of the Invention

[0005] In view of the above problems, this application provides an energy storage device and an energy storage system, which has good ease of installation.

[0006] In a first aspect, some embodiments of this application provide an energy storage device, which includes a first module and a second module. The first module includes a first compartment and a first battery device, and the first compartment houses the first battery device. The second module includes a second compartment and a first heat exchange component, and the second compartment houses the first heat exchange component. The second module is stacked on top of the first module, and the second compartment is connected to the first compartment.

[0007] In the above structure, since the energy storage device includes a first module and a second module stacked together, and each includes a first compartment for accommodating a first battery device and a second compartment for accommodating a first heat exchange component, when assembling the energy storage device, it is only necessary to connect the first compartment of the assembled first module to the second compartment of the assembled second module, without having to install the various functional components of the energy storage device at the installation site, which helps to improve the ease of installation of the energy storage device.

[0008] According to some embodiments of the energy storage device provided in this application, at least two first modules are provided, stacked vertically, with adjacent first modules connected. By including at least two vertically arranged first modules in the energy storage device, not only can more battery devices be included, enabling the energy storage device to store more electrical energy, but it also helps to reduce the horizontal area occupied by the energy storage device, thereby improving space utilization.

[0009] According to the energy storage device provided by some embodiments of the present application, the center of gravity of the second module is configured to be located at the geometric center of the second module, so that the second module is less likely to sway during hoisting, thereby reducing the possibility of falling off or colliding with other components during hoisting.

[0010] According to the energy storage device provided by some embodiments of the present application, the second module further comprises a first electrical component, the second cavity body contains the first electrical component, and the first electrical component is electrically connected with the first battery device, thereby facilitating normal operation of the energy storage device.

[0011] According to the energy storage device provided by some embodiments of the present application, the first electrical component and the first heat exchange component are symmetrically arranged relative to the geometric center of the second module, thereby facilitating the center of gravity of the second module to be closer to the geometric center of the second module, improving the stability of the second module during hoisting, so that the second module is less likely to sway during hoisting, thereby reducing the possibility of falling off or colliding with other components during hoisting.

[0012] According to the energy storage device provided by some embodiments of the present application, the second cavity body is provided with a first ventilation opening and a second ventilation opening, both of which are communicated with the interior of the second cavity body, so that external air can enter the interior of the second cavity body and take away the heat inside the second cavity body, and the heat emitted by the first heat exchange component to the interior of the second cavity body can be quickly dissipated to the external air.

[0013] According to the energy storage device provided by some embodiments of the present application, the second cavity body comprises a first top wall and a first side wall connected to each other, the second ventilation opening is arranged on the first top wall, and the first ventilation opening is arranged on the first side wall. By arranging the second ventilation opening on the first top wall and the first ventilation opening on the first side wall, the second ventilation opening and the first ventilation opening are arranged on different wall structures, which can reduce the damage of the ventilation openings to the wall structure of the second cavity body, and help to improve the structural strength of the second cavity body.

[0014] According to the energy storage device provided by some embodiments of the present application, the projection of the second ventilation opening in the vertical direction covers the geometric center of the second module. By covering the geometric center of the second module with the projection of the second ventilation opening in the vertical direction, the second ventilation opening can correspond to the central region of the second cavity body, which not only enables the second ventilation opening to better exhaust the air inside the second cavity body, but also reduces the influence of the second ventilation opening on the position of the center of gravity of the second module.

[0015] According to the energy storage device provided by some embodiments of the present application, the second ventilation port is provided with at least two second ventilation ports, and projections of the at least two second ventilation ports in the vertical direction are symmetrical relative to the geometric center of the second module, so that the at least two second ventilation ports can symmetrically communicate with the central region of the internal space of the second storage body, which not only enables the second ventilation port to better discharge the air in the second storage body, but also reduces the influence of the second ventilation port on the position of the gravity center of the second module.

[0016] According to the energy storage device provided by some embodiments of the present application, the first ventilation port is provided with at least two first ventilation ports, and the at least two first ventilation ports are symmetrically arranged relative to the geometric center of the second module, which is beneficial to reduce the influence of the first ventilation port on the position of the gravity center of the second module.

[0017] According to the energy storage device provided by some embodiments of the present application, the gravity center of the first module is configured to be located at the geometric center of the first module, so that the first module is not easy to swing during hoisting, which is beneficial to reduce the possibility of falling off or colliding with other components during hoisting.

[0018] According to the energy storage device provided by some embodiments of the present application, the first battery device in the first module is provided with at least two first battery devices, and the at least two first battery devices are symmetrically arranged relative to the geometric center of the first module, so that the gravity center of the first module can be closer to the geometric center of the first module, which is beneficial to improve the stability of the first module during hoisting.

[0019] According to the energy storage device provided by some embodiments of the present application, the second module includes a maintenance assembly, and the maintenance assembly is arranged in the second storage body.

[0020] According to the energy storage device provided by some embodiments of the present application, the first heat exchange assembly includes a radiator and a fan, the radiator is arranged in the second storage body, the air inlet of the fan communicates with the second storage body, and the air outlet of the fan communicates with the second ventilation port; the energy storage device further includes a heat management pipeline, and the heat management pipeline communicates the radiator and the first battery device. The heat management pipeline enables the heat exchange medium to circulate between the radiator and the second heat exchanger, so that the first battery device in the first storage body can exchange heat with the outside through the radiator.

[0021] According to the energy storage device provided by some embodiments of the present application, the first heat exchange assembly further comprises a compressor and a circulating pump, the heat management pipeline sequentially communicates the compressor, the heat radiator, the first battery device and the circulating pump, and the compressor, the heat radiator, the first battery device and the circulating pump are symmetrically arranged relative to the geometric center of the second module, which is beneficial to make the gravity center of the second module close to the geometric center of the second module, improve the stability of the second module in the hoisting process, prevent the second module from swinging and shaking in the hoisting process, and reduce the possibility of falling off or colliding with other components in the hoisting process.

[0022] According to the energy storage device provided by some embodiments of the present application, the compressor is provided with at least two, and at least two of the compressors are symmetrically arranged relative to the geometric center of the second module, which is beneficial to make the gravity center of the second module close to the geometric center of the second module, improve the stability of the second module in the hoisting process, prevent the second module from swinging and shaking in the hoisting process, and reduce the possibility of falling off or colliding with other components in the hoisting process.

[0023] According to the energy storage device provided by some embodiments of the present application, the fan is provided with at least two, and at least two of the fans are symmetrically arranged relative to the geometric center of the second module, which is beneficial to make the gravity center of the second module close to the geometric center of the second module, improve the stability of the second module in the hoisting process, prevent the second module from swinging and shaking in the hoisting process, and reduce the possibility of falling off or colliding with other components in the hoisting process.

[0024] According to the energy storage device provided by some embodiments of the present application, the first module comprises at least two battery clusters, the battery cluster comprises at least one first battery device, and the heat management pipeline is connected in series and / or parallel to at least two battery clusters, so that the first battery device in at least two battery clusters can be communicated with the first heat exchange assembly through the heat management pipeline, and heat dissipation of the first battery device in at least two battery clusters is realized.

[0025] According to the energy storage device provided by some embodiments of the present application, the battery cluster comprises at least two first battery devices, and the heat management pipeline connects at least two first battery devices in the battery cluster in series and / or parallel, so that each first battery device in the same battery cluster can be smoothly heat dissipated outward.

[0026] According to the energy storage device provided by some embodiments of the present application, the heat management pipeline comprises a first pipe segment, a second pipe segment and a connecting pipe segment, the first pipe segment is located in the first storage body, the second pipe segment is located in the second storage body, and the connecting pipe segment is connected between the first pipe segment and the second pipe segment and penetrates the wall of the second storage body and the wall of the first storage body. Through the above arrangement, the heat management pipeline is beneficial to reducing the total length of the pipeline, which is not only beneficial to reducing the manufacturing cost of the energy storage device, but also beneficial to shortening the travel of the heat exchange medium, reducing energy consumption and operation cost.

[0027] According to the energy storage device provided by some embodiments of the present application, the heat management pipeline comprises a third pipe segment, a fourth pipe segment, a fifth pipe segment, a first extension pipe segment and a second extension pipe segment, the third pipe segment is located in the first storage body, the fourth pipe segment is located in the second storage body, the fifth pipe segment is located outside the second storage body and the first storage body, the first extension pipe segment is connected between the third pipe segment and the fifth pipe segment and penetrates the wall of the first storage body, and the second extension pipe segment is connected between the fourth pipe segment and the fifth pipe segment and penetrates the wall of the second storage body. Through the above arrangement, part of the pipeline is located outside the first storage body and the second storage body, so that the heat management pipeline can be more conveniently installed outside the first storage body and the second storage body, which is beneficial to improving the installation convenience of the energy storage device.

[0028] According to the energy storage device provided by some embodiments of the present application, the distance between the second extension pipe segment and the top end of the second storage body is less than the distance between the second extension pipe segment and the bottom end of the second storage body.

[0029] According to the energy storage device provided by some embodiments of the present application, the second storage body is detachably connected with the first storage body.

[0030] According to the energy storage device provided by some embodiments of the present application, the energy storage device further comprises a third module, the third module is arranged on the lower side of the first module, the third module comprises a third battery device and a third storage body, the third storage body accommodates the third battery device, and the third storage body is connected to the lower side of the first storage body.

[0031] According to the energy storage device provided by some embodiments of the present application, the energy storage device further comprises a fourth module stacked between the first module and the second module, the fourth module comprises a second electrical component and a fourth storage body, the fourth storage body accommodates the second electrical component, and the second electrical component is electrically connected with the first battery device. The fourth module is stacked between the first module and the second module, so that the second electrical component with large heat generation in the fourth module can generate heat which can be better dissipated to the outside through the first heat exchange component of the first module.

[0032] According to the energy storage device provided by some embodiments of the present application, the fourth bin body is connected between the first bin body and the second bin body in the vertical direction.

[0033] According to the energy storage device provided by some embodiments of the present application, the first module further comprises a power conversion device, which is arranged in the first bin body and electrically connected with the first battery device, so as to facilitate the installation of the power conversion device with the first bin body in the energy storage device and improve the installation convenience of the energy storage device.

[0034] According to the energy storage device provided by some embodiments of the present application, the second module further comprises a power conversion device, which is arranged in the second bin body and electrically connected with the first battery device, so as to facilitate the installation of the power conversion device with the second bin body in the energy storage device and improve the installation convenience of the energy storage device.

[0035] According to the energy storage device provided by some embodiments of the present application, the second module further comprises a fire-fighting tank body arranged in the second bin body, and the first module further comprises a spraying member in communication with the fire-fighting tank body, which is arranged in the first bin body, so as to facilitate the installation of the fire-fighting tank body with the second bin body in the energy storage device and the installation of the spraying member with the first bin body in the energy storage device and improve the installation convenience of the energy storage device.

[0036] In the second aspect, some embodiments of the present application provide an energy storage system, which comprises a power conversion device and one or more energy storage devices provided by any of the technical solutions above, and the power conversion device is used to electrically connect a power generation device and one or more energy storage devices.

[0037] The technical solutions provided by the embodiments of the present application at least bring the following beneficial effects:

[0038] The present application provides an energy storage device, which comprises a first module and a second module, the first module comprises a first bin body and a first battery device, and the first bin body contains the first battery device; the second module comprises a second bin body and a first heat exchange assembly, and the second bin body contains the first heat exchange assembly; the second module is stacked on the upper side of the first module, and the second bin body is connected with the first bin body. In the above structure, since the energy storage device comprises the first module and the second module which are stacked and arranged, and each of them comprises the first bin body containing the first battery device and the second bin body containing the first heat exchange assembly, when the energy storage device is assembled, only the first bin body in the assembled first module needs to be connected to the second bin body in the assembled second module, and it is not necessary to install each functional assembly of the energy storage device on site, which is conducive to improving the installation convenience of the energy storage device. Attached Figure Description

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0040] Figure 1 is a schematic diagram of the structure of an energy storage device provided in some embodiments of this application;

[0041] Figure 2 is a partial internal structure diagram of an energy storage device provided in some embodiments of this application;

[0042] Figure 3 is a schematic diagram of the structure of the second module in the energy storage device provided in some embodiments of this application;

[0043] Figure 4 is a schematic diagram of the structure of the second module in an energy storage device provided in another embodiment of this application;

[0044] Figure 5 is a partial internal structure diagram of the second module in an energy storage device provided in some embodiments of this application;

[0045] Figure 6 is a partial internal structure diagram of the first module in the energy storage device provided in some embodiments of this application;

[0046] Figure 7 is a schematic diagram of a portion of the thermal management pipeline in an energy storage device provided in some embodiments of this application;

[0047] Figure 8 is a schematic diagram of a portion of the thermal management pipeline in an energy storage device provided in another embodiment of this application.

[0048] In the diagram:

[0049] 1. First module; 11. First compartment; 12. First battery device; 13. Battery cluster; 14. Sprayer component;

[0050] 2. Second Module; 20. Second Chamber; 21. First Ventilation Opening; 22. Second Ventilation Opening; 23. First Electrical Component; 24. First Top Wall; 25. First Side Wall; 26. Radiator; 27. Fan; 28. Fire Tank; 29. ​​Power Conversion Device; 210. Maintenance Component; 211. Compressor; 212. Circulating Pump; 213. Thermal Management Piping; 2131. First Pipe Section; 2132. Second Pipe Section; 2133. Connecting Pipe Section; 2134. Third Pipe Section; 2135. Fourth Pipe Section; 2136. Fifth Pipe Section; 2137. First Connecting Pipe Section; 2138. Second Connecting Pipe Section; 220. First Heat Exchanger Component;

[0051] 3. Third module; 31. Third compartment; 32. Third battery unit;

[0052] 4, fourth module; 41, fourth cartridge body; 42, second electrical component. DETAILED DESCRIPTION

[0053] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0054] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should be understood as the usual meaning understood by the skilled person in the field to which the embodiments of the present application belong.

[0055] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0056] In addition, the technical terms "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0057] In the description of the embodiments of the present application, unless otherwise specifically specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0058] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, a first feature is "on", "above", or "under" a second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact with an intervening medium. Also, a first feature "over", "above", and "on" a second feature can mean that the first feature is directly above or obliquely above the second feature, or that the first feature is merely horizontally higher than the second feature. A first feature "under", "below", and "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or that the first feature is merely horizontally lower than the second feature.

[0059] At present, from the development of market situation, the application of battery apparatus is more and more extensive. The battery apparatus is not only applied to the energy storage power supply system such as hydroelectric power station, thermal power station, wind power station and solar power station, but also widely applied to the energy storage device such as energy storage container or energy storage cabinet. With the continuous expansion of the application field of battery apparatus, the requirement for the reliability of battery apparatus is also continuously improved.

[0060] The battery apparatus mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel or in mixed connection through a busbar component.

[0061] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells.

[0062] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0063] In some embodiments, the battery apparatus can include one or more battery packs, and the battery pack can include one or more battery cell assemblies. As an example, the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body by a fixing manner. As another example, the battery apparatus includes a plurality of battery packs, and the plurality of battery packs can be connected in series, in parallel or in mixed connection.

[0064] As an example, the box body can include a first box body and a second box body. The first box body and the second box body are buckled to form a closed space inside the box body to accommodate the battery cell assembly. Here, the closed refers to covering or closing, which can be sealed or unsealed. The first box body can be a top cover or a bottom plate.

[0065] As an example, the cabinet can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively, so that an enclosed space is formed inside the cabinet to accommodate the battery monomer assembly.

[0066] In some embodiments, the plurality of battery packs included in the battery device can constitute one or more battery clusters, so that the energy storage device provided by the embodiments of the present application includes one or more battery clusters to improve the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery packs, and the plurality of battery packs are connected in series through the busbar component to improve the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters can be connected in series, in parallel, or in a mixed manner.

[0067] The energy storage device can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output electrical energy at appropriate times. For example, the energy storage device can store electrical energy during the low valley of electricity consumption, and provide electrical energy for related users or electrical equipment during the peak of electricity consumption. The energy storage system provided by the embodiments of the present application can be any power system that needs to use an energy storage device.

[0068] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0069] In some embodiments, the energy storage device can include a cabinet body and one or more battery clusters, and the battery clusters are accommodated in the cabinet body.

[0070] In some embodiments, the energy storage device can include a thermal management module, a master control module, a general control module, a power distribution module, a fire-fighting module and the like.

[0071] As an example, the thermal management module can include a liquid cooling unit, and the liquid cooling unit provides cooling liquid for adjusting the temperature of the battery monomer through the pipeline to each battery device.

[0072] As an example, the master control module can serve as a battery management unit of the battery cluster, and is used for monitoring and managing the battery cluster. The master control module can monitor the current, voltage, power or temperature and the like of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The master control module includes a slave battery management unit (SBMU), a fusion switch and the like.

[0073] As an example, the general control module can be used as a battery management unit of the energy storage device to monitor and manage the energy storage device. The general control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device. For example, the charging and discharging current, voltage, etc. of the energy storage device can be controlled. As an example, the general control module includes an insulation monitoring module IMM (Insulation Monitoring Module, IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH), and an optical fiber conversion module.

[0074] As an example, the fire control system includes a control panel, a detector, an alarm device, etc. to detect, alarm, or extinguish the energy storage system.

[0075] As an example, the power distribution device can be used to distribute power to the energy storage device power module.

[0076] At present, the existing energy storage device has a high degree of integration, which is provided with a variety of functional components. Since these functional components need to be assembled on the bin body of the energy storage device, not only does it bring great difficulty to the design of these functional components, but also makes the assembly of the energy storage device very inconvenient, which is not conducive to the improvement of the installation convenience of the energy storage device.

[0077] In order to improve the installation convenience of the energy storage device, the present application provides an energy storage device, which comprises a first module and a second module, the first module comprising a first bin body and a first battery device, the first bin body accommodating the first battery device; the second module comprising a second bin body and a first heat exchange component, the second bin body accommodating the first heat exchange component; the second module is stacked on the upper side of the first module, and the second bin body is connected with the first bin body. In the above structure, since the energy storage device comprises the first module and the second module which are stacked, and the first module and the second module respectively comprise the first bin body accommodating the first battery device and the second bin body accommodating the first heat exchange component, when the energy storage device is assembled, only the first bin body in the assembled first module needs to be connected to the second bin body in the assembled second module, without the need to install each functional component of the energy storage device on site, which is conducive to improving the installation convenience of the energy storage device.

[0078] The energy storage device described in the embodiments of the present application can be an energy storage container or an energy storage cabinet, and the energy storage device described in the embodiments of the present application can be applied to an energy storage system, which can include one or more energy storage devices and a power converter system (PCS) connected between a power generation device and the energy storage device. The power generation device is used to generate electric energy, and the electric energy generated by the power generation device can be stored in the energy storage device through the power converter system. As an example, the power generation device can be a solar panel, a hydroelectric power generation device, a fire power generation device, a wind power generation device, etc.

[0079] Some embodiments of the present application provide an energy storage device, referring to FIG. 1, which includes a first module 1 and a second module 2, referring to FIG. 2, the first module 1 includes a first warehouse body 11 and a first battery device 12, and the first warehouse body 11 contains the first battery device 12; the second module 2 includes a second warehouse body 20 and a first heat exchange assembly 220, and the second warehouse body 20 contains the first heat exchange assembly 220; the second module 2 is stacked on the upper side of the first module 1, and the second warehouse body 20 is connected with the first warehouse body 11.

[0080] The first module 1 and the second module 2 are different modules in the energy storage device, and each has a variety of functional components in the energy storage device, so that the energy storage device composed of the first module 1 and the second module 2 has a variety of functional components, so that the energy storage device can store electric energy well and output at the appropriate time.

[0081] The functional components in the first module 1 and the second module 2 can be assembled in a production workshop, so that when assembling the energy storage device, only the first module 1 and the second module 2 in the form of a module need to be connected, saving the time and inconvenience of installing each functional component on site.

[0082] The first warehouse body 11 can be a warehouse structure capable of forming a hollow structure in the energy storage device, and the hollow structure therein can serve as a containing space for containing the first battery device 12 in the energy storage device, and the first battery device 12 can be protected by the first warehouse body 11.

[0083] By way of example, the first battery device 12 can be a part of the battery device in the energy storage device, and the energy storage device further includes other battery devices in addition to the first battery device 12. The first warehouse body 11 and other warehouse bodies are used to contain the battery devices in the energy storage device, and the first battery device 12 in the energy storage device is contained in the first warehouse body 11, and the other battery devices are contained in the other warehouse bodies.

[0084] The first battery device 12 is accommodated in the first bin body 11. The first battery device 12 can be connected to the wall of the first bin body 11 by a bolt, a rivet, a connecting pin or the like. Alternatively, the first battery device 12 can be first fixed to a shelf, and then the shelf is connected to the wall of the first bin body 11 by a bolt, a rivet, a connecting pin or the like. In this way, the first battery device 12 is less likely to move in the first bin body 11 due to shaking, and the possibility of damage to the first battery device 12 is reduced.

[0085] Exemplarily, the first bin body 11 can be provided with at least two first battery devices 12. The at least two battery devices can be connected in series by a busbar to form a battery cluster 13.

[0086] The second bin body 20 can be a bin body structure capable of forming a hollow structure in the energy storage device. The hollow structure can serve as an accommodation space for accommodating the first heat exchange assembly 220 in the energy storage device, and the first heat exchange assembly 220 can be protected by the second bin body 20.

[0087] The first heat exchange assembly 220 can be an assembly for heat exchange between the battery device in the energy storage device and the outside. The heat exchange medium in the first heat exchange assembly 220 can absorb heat from the battery device and dissipate the heat to the outside environment through the first heat exchange assembly 220. Alternatively, the heat exchange medium in the first heat exchange assembly 220 can absorb heat from the outside environment through the first heat exchange assembly 220 and transfer the heat to the battery monomers in the battery device, so that the battery monomers in the battery device are at an appropriate temperature, which is conducive to keeping the battery device in a good working state.

[0088] The second bin body 20 accommodates the first heat exchange assembly 220. The first heat exchange assembly 220 can be located in the second bin body 20, and the first heat exchange assembly 220 can be connected to the wall of the second bin body 20 by a bolt, a rivet, a connecting pin or the like. In this way, the components in the first heat exchange assembly 220 are less likely to move in the second bin body 20 due to shaking, and the possibility of damage to the components in the first heat exchange assembly 220 is reduced.

[0089] The second module 2 is stacked on the upper side of the first module 1. In the vertical direction, the second module 2 is arranged on the upper side of the first module 1, so that the first module 1 and the second module 2 in the energy storage device are arranged in the vertical direction. This is conducive to reducing the area occupied by the energy storage device in the horizontal direction and improving the utilization rate of space.

[0090] The second module 2 can be connected to the first module 1 by connecting the second housing 20 to the first housing 11. The first module 1 and the second module 2 can be firmly connected to form an integrated structure. The first housing 11 of the first module 1 can be connected to the second housing 20 of the second module 2 by bolts, rivets, connecting pins, or other connecting elements. The first module 1 and the second module 2 are firmly connected, which improves the overall structural strength of the energy storage device and improves the reliability of the energy storage device.

[0091] The second module 2 can be lifted to the upper side of the first module 1 by a crane or other lifting equipment, and then the second housing 20 can be connected to the first housing 11.

[0092] In the above structure, the energy storage device includes the first module 1 and the second module 2 stacked together, and the first module 1 includes the first housing 11 containing the first battery device 12, and the second module 2 includes the second housing 20 containing the first heat exchange assembly 220. When assembling the energy storage device, only the first housing 11 of the assembled first module 1 needs to be connected to the second housing 20 of the assembled second module 2, and there is no need to install each functional component of the energy storage device on site, which improves the installation convenience of the energy storage device.

[0093] In some embodiments, the first module 1 includes at least two first modules 1 stacked in the vertical direction, and the adjacent first housings 11 are connected.

[0094] The first module 1 includes at least two first modules 1 arranged in the vertical direction. The energy storage device includes at least two first modules 1, which can include more battery devices, and can store more electrical energy. By arranging the at least two first modules 1 in the vertical direction, the area occupied by the energy storage device in the horizontal direction is reduced, and the utilization of space is improved.

[0095] The second module 2 can be connected to the first module 1 by connecting the second housing 20 to the first housing 11. The first module 1 and the second module 2 can be firmly connected to form an integrated structure. The first housing 11 of the first module 1 can be connected to the second housing 20 of the second module 2 by bolts, rivets, connecting pins, or other connecting elements. The first module 1 and the second module 2 are firmly connected, which improves the overall structural strength of the energy storage device and improves the reliability of the energy storage device.

[0096] In some embodiments, the center of gravity of the second module 2 is located at the geometric center of the second module 2.

[0097] Since the second module 2 is arranged on the upper side of the first module 1, during the installation of the energy storage device, the second module 2 needs to be hoisted to the upper side of the first module 1. By configuring the center of gravity of the second module 2 to be located at the geometric center of the second module 2, the second module 2 is less likely to sway during hoisting, which is beneficial to reduce the possibility of falling off or colliding with other components during hoisting.

[0098] The center of gravity of the second module 2 is configured to be located at the geometric center of the second module 2. Alternatively, the center of gravity of the second module 2 is configured to be located near the geometric center of the second module 2, i.e., the center of gravity of the second module 2 is configured to be located at a distance from the geometric center of the second module 2 that is less than or equal to a second preset distance. Exemplarily, the second preset distance can be 3m, 2m or 1.5m. Those skilled in the art can set the specific distance of the second preset distance according to the actual situation.

[0099] In some embodiments, the second module 2 further comprises a first electrical assembly 23, and the second bin body 20 contains the first electrical assembly 23. The first electrical assembly 23 is electrically connected to the first battery device 12.

[0100] Exemplarily, the first electrical assembly 23 can include energy storage converters, battery management systems, electrically controlled switches, fire control controllers and other electrical components. These electrical components are electrically connected to the battery device, so that the energy storage device can work normally.

[0101] The second bin body 20 contains the first electrical assembly 23. Alternatively, the first electrical assembly 23 can be located in the second bin body 20, and the devices in the first electrical assembly 23 are connected to the wall of the second bin body 20 by bolts, rivets, connecting pins and other connecting members. This reduces the possibility of movement of the components in the first electrical assembly 23 due to shaking in the second bin body 20, and is beneficial to reduce the possibility of damage to the components in the first electrical assembly 23.

[0102] In some embodiments, referring to FIG. 3, the first electrical assembly 23 and the first heat exchange assembly 220 are symmetrically arranged relative to the geometric center of the second module 2.

[0103] Since each device in the first electrical assembly 23 and each device in the first heat exchange assembly 220 are heavy devices in the second module 2, by symmetrically arranging the first electrical assembly 23 and the first heat exchange assembly 220 relative to the geometric center of the second module 2, the center of gravity of the second module 2 is closer to the geometric center of the second module 2, which is beneficial to improve the stability of the second module 2 during hoisting, so that the second module 2 is less likely to sway during hoisting, which is beneficial to reduce the possibility of falling off or colliding with other components during hoisting.

[0104] The first electrical component 23 and the first heat exchange component 220 are symmetrically arranged relative to the geometric center of the second module 2. The first electrical component 23 as a whole and the first heat exchange component 220 as a whole can be symmetrically arranged on two sides of the geometric center of the second module 2, so that the gravity center of the second module 2 is close to the geometric center of the second module 2. Alternatively, the devices in the first electrical component 23 and the devices in the first heat exchange component 220 can be symmetrically arranged on two sides of the geometric center of the second module 2. Alternatively, the devices in the first electrical component 23 and the devices in the first heat exchange component 220 can be symmetrically arranged around the geometric center of the second module 2.

[0105] In some embodiments, the second cabinet 20 is provided with a first ventilation opening 21 and a second ventilation opening 22, both of which are connected to the interior of the second cabinet 20.

[0106] The first ventilation opening 21 and the second ventilation opening 22 can be windows for ventilation on the wall of the second cabinet 20, which can communicate the interior of the second cabinet 20 with the outside. For example, the first ventilation opening 21 can be a window for incoming air, and the second ventilation opening 22 can be a window for outgoing air, so that the fresh air entering from the first ventilation opening 21 can be discharged to the outside through the second ventilation opening 22.

[0107] By opening the first ventilation opening 21 and the second ventilation opening 22 on the wall of the second cabinet 20 for ventilation, outside air can enter the interior of the second cabinet 20 and take away the heat inside the second cabinet 20, so that the heat emitted by the first heat exchange component 220 to the interior of the second cabinet 20 can be quickly dissipated into the outside air.

[0108] In some embodiments, the second cabinet 20 includes a first top wall 24 and a first side wall 25 connected to each other, the second ventilation opening 22 is arranged on the first top wall 24, and the first ventilation opening 21 is arranged on the first side wall 25.

[0109] The first top wall 24 and the first side wall 25 can be wall structures in the second cabinet 20 for enclosing a containing space, and the first heat exchange component 220 and other devices in the second module 2 can be connected to the first top wall 24 or the first side wall 25, so that the load of these devices can be transmitted to the first module 1 through the first side wall 25 or the first side wall 25.

[0110] The first top wall 24 can be a wall structure on the top side of the second cabinet 20, which can be arranged in a horizontal direction or at an angle less than 90° with the horizontal direction. The first side wall 25 can enclose a hollow structure with open ends, and the first top wall 24 is connected to the top end of the hollow structure.

[0111] By setting the second vent 22 on the first top wall 24 and the first vent 21 on the first side wall 25, the second vent 22 and the first vent 21 are arranged on different wall structures respectively, which can reduce the damage of the arrangement of the vents to the wall structure of the second bin body 20, and help to improve the structural strength of the second bin body 20.

[0112] Exemplarily, the second vent 22 can be an air outlet arranged on the first top wall 24, so that the air in the second bin body 20 can be smoothly discharged from the second vent when the air is heated and rises.

[0113] In some embodiments, the second vent 22 is arranged on the first side wall 25, and the first vent 21 is arranged on the first top wall 24.

[0114] In some embodiments, the projection of the second vent 22 in the vertical direction covers the geometric center of the second module 2.

[0115] By covering the geometric center of the second module 2 with the projection of the second vent 22 in the vertical direction, the second vent 22 can correspond to the central region of the second bin body 20, which not only enables the second vent 22 to better discharge the air inside the second bin body 20, but also reduces the influence of the second vent 22 on the center of gravity of the second module 2.

[0116] In some embodiments, the second vent 22 is provided with at least two, and the projections of the at least two second vents 22 in the vertical direction are symmetrical relative to the geometric center of the second module 2.

[0117] By providing at least two second vents 22, the air inside the second bin body 20 can be more smoothly discharged, which is conducive to making the second module 2 have good ventilation performance. By setting the positions of the at least two second vents 22, the projections of the at least two second vents 22 in the vertical direction are symmetrical relative to the geometric center of the second module 2, so that the at least two second vents 22 can symmetrically communicate with the central region of the internal space of the second bin body 20, which not only enables the second vent 22 to better discharge the air inside the second bin body 20, but also reduces the influence of the second vent 22 on the center of gravity of the second module 2.

[0118] The projections of the at least two second air vents 22 in the vertical direction are symmetrically arranged relative to the geometric center of the second module 2. The projection of each of the at least two first air vents 21 in the vertical direction can be symmetrically arranged on both sides of the geometric center of the second module 2 in a scattered manner. Alternatively, the projection of each of the at least two first air vents 21 in the vertical direction can be arranged around the outside of the geometric center of the second module 2 in a scattered manner with the geometric center of the second module 2 as the center.

[0119] In some embodiments, the first module 1 is provided with at least two first air vents 21, and the at least two first air vents 21 are symmetrically arranged relative to the geometric center of the first module 1.

[0120] The at least two first air vents 21 are symmetrically arranged relative to the geometric center of the second module 2, which is beneficial to reduce the influence of the first air vent 21 on the position of the gravity center of the second module 2.

[0121] The at least two first air vents 21 are symmetrically arranged relative to the geometric center of the second module 2. The projection of each of the at least two first air vents 21 in the vertical direction can be symmetrically arranged on both sides of the geometric center of the second module 2 in a scattered manner. Alternatively, the projection of each of the at least two first air vents 21 in the vertical direction can be arranged around the outside of the geometric center of the second module 2 in a scattered manner with the geometric center of the second module 2 as the center.

[0122] In some embodiments, the gravity center of the first module 1 is configured to be located at the geometric center of the first module 1.

[0123] Since the first module 1 can be provided with a plurality of first modules 1 arranged in a vertical direction, the first module 1 located on the upper layer needs to be hoisted to the upper side of the first module 1 located on the lower layer. By configuring the gravity center of the first module 1 to be located at the geometric center of the first module 1, the first module 1 is less likely to sway during hoisting, which is beneficial to reduce the possibility of falling off or colliding with other components during hoisting.

[0124] The gravity center of the first module 1 is configured to be located at the geometric center of the first module 1. Alternatively, the gravity center of the first module 1 is configured to be located near the geometric center of the first module 1, i.e., the distance between the gravity center of the first module 1 and the geometric center of the first module 1 is less than or equal to a first preset distance. For example, the first preset distance can be 3 m, 2 m or 1.5 m. Those skilled in the art can set the specific distance of the first preset distance according to actual conditions.

[0125] In some embodiments, the first module 1 is provided with at least two first battery devices 12, and the at least two first battery devices 12 are symmetrically arranged relative to the geometric center of the first module 1.

[0126] By arranging at least two first battery devices 12 in the first module 1, the at least two first battery devices 12 are arranged in series or in parallel, so that the first battery devices 12 in the first module 1 can store more electric energy. By arranging the at least two first battery devices 12 symmetrically relative to the geometric center of the first module 1, the center of gravity of the first module 1 can be closer to the geometric center of the first module 1, which is beneficial to improve the stability of the first module 1 during hoisting.

[0127] In some embodiments, referring to FIG. 4, the second module 2 comprises a maintenance assembly 210, and the maintenance assembly 210 is arranged in the second cabinet 20.

[0128] The maintenance assembly 210 can be a device for maintaining the energy storage device. The maintenance assembly 210 is arranged in the second cabinet 20, and can be arranged inside the second cabinet 20 and connected to the wall of the second cabinet 20, or arranged outside the second cabinet 20 and connected to the wall of the second cabinet 20.

[0129] For example, the maintenance assembly 210 can be connected to the wall of the second cabinet 20 by using bolts, rivets, connecting pins and the like. In some embodiments, the maintenance assembly 210 can comprise a tool box, a maintenance ladder and the like.

[0130] In some embodiments, the second module 2 further comprises a display screen arranged on the wall of the second cabinet 20.

[0131] In some embodiments, referring to FIG. 5, the first heat exchange assembly 220 comprises a heat sink 26 and a fan 27. The heat sink 26 is arranged in the second cabinet 20, the air inlet of the fan 27 is communicated with the second cabinet 20, and the air outlet of the fan 27 is communicated with the second ventilation opening 22. The energy storage device further comprises a heat management pipeline 213, and the heat management pipeline 213 communicates the heat sink 26 and the first battery device 12.

[0132] The heat sink 26 can be a heat exchanger arranged in the second cabinet 20, which serves as a device for heat exchange with the outside in the first heat exchange assembly 220. The heat exchange medium in the heat exchange assembly can absorb heat from the battery device and dissipate to the outside environment through the heat sink 26. The outside air entering the second cabinet 20 from the first ventilation opening 21 can be discharged to the outside through the second ventilation opening 22 after heat exchange with the heat sink 26.

[0133] The fan 27 can be a device for accelerating air flow. The air outlet of the fan 27 is communicated with the second ventilation opening 22, which is used to accelerate the speed of air flow in the second cabinet 20, which is beneficial to improve the heat exchange effect of the heat sink 26.

[0134] Exemplarily, the fan 27 can be located inside the second bin body 20 or outside the second bin body 20.

[0135] The second heat exchanger in the battery device exchanges heat with the internal battery monomer. The heat management pipeline 213 can be a pipeline for connecting the heat dissipator 26 and the second heat exchanger in the first battery device 12, which enables the heat exchange medium to flow in circulation between the heat dissipator 26 and the second heat exchanger, so that the first battery device 12 located in the first bin body 11 can exchange heat with the outside through the heat dissipator 26.

[0136] In some embodiments, the first heat exchange assembly 220 further comprises a compressor 211 and a circulating pump 212, and the heat management pipeline 213 sequentially connects the compressor 211, the heat dissipator 26, the first battery device 12 and the circulating pump 212, and the compressor 211, the heat dissipator 26, the first battery device 12 and the circulating pump 212 are symmetrically arranged relative to the geometric center of the second module 2.

[0137] The compressor 211 extracts and compresses the heat exchange medium from the first battery device 12 (low pressure side), so that the temperature and pressure of the heat exchange medium are increased, and the heat exchange medium is pushed to the heat dissipator 26 (high pressure side), so that the heat exchange medium is better dissipated to the outside. The circulating pump 212 can promote the flow of the heat exchange medium in the heat management pipeline 213, which is beneficial to improve the heat exchange efficiency of the first heat exchange assembly 220.

[0138] The heat management pipeline 213 sequentially connects the compressor 211, the heat dissipator 26, the first battery device 12 and the circulating pump 212, so that the heat exchange medium can flow in circulation, and the heat of the first battery device 12 is transported to the heat dissipator 26 for heat dissipation.

[0139] By symmetrically arranging the compressor 211, the heat dissipator 26, the first battery device 12 and the circulating pump 212 relative to the geometric center of the second module 2, the gravity center of the second module 2 is closer to the geometric center of the second module 2, which is beneficial to improve the stability of the second module 2 during hoisting, so that the second module 2 is not easy to swing during hoisting, and the possibility of falling off or colliding with other components during hoisting is reduced.

[0140] The compressor 211, the heat dissipator 26, the first battery device 12 and the circulating pump 212 are symmetrically arranged relative to the geometric center of the second module 2, which can be that the compressor 211, the heat dissipator 26, the first battery device 12 and the circulating pump 212 are symmetrically arranged on both sides of the geometric center of the second module 2; or the compressor 211, the heat dissipator 26, the first battery device 12 and the circulating pump 212 are dispersedly arranged outside the geometric center of the second module 2 with the geometric center of the second module 2 as the center.

[0141] In some embodiments, the compressor 211 is provided with at least two, and the at least two compressors 211 are symmetrically arranged relative to the geometric center of the second module 2.

[0142] By providing the compressor 211 with at least two, the working efficiency of the first heat exchange assembly 220 is improved. By symmetrically arranging the at least two compressors 211 relative to the geometric center of the second module 2, the center of gravity of the second module 2 is closer to the geometric center of the second module 2, which improves the stability of the second module 2 during hoisting, so that the second module 2 is not easy to sway during hoisting, and the possibility of falling off or colliding with other components during hoisting is reduced.

[0143] The at least two compressors 211 can be symmetrically arranged on both sides of the geometric center of the second module 2, or can be dispersedly arranged on the outer side of the geometric center of the second module 2 with the geometric center of the second module 2 as the center.

[0144] In some embodiments, the fan 27 is provided with at least two, and the at least two fans 27 are symmetrically arranged relative to the geometric center of the second module 2.

[0145] By providing the fan 27 with at least two, the at least two fans 27 have larger ventilation capacity, which improves the air circulation in the second cavity body 20 and improves the heat dissipation of the battery device in the energy storage device.

[0146] By symmetrically arranging the at least two fans 27 relative to the geometric center of the second module 2, the center of gravity of the second module 2 is closer to the geometric center of the second module 2, which improves the stability of the second module 2 during hoisting, so that the second module 2 is not easy to sway during hoisting, and the possibility of falling off or colliding with other components during hoisting is reduced.

[0147] The at least two fans 27 can be symmetrically arranged on both sides of the geometric center of the second module 2, or can be dispersedly arranged on the outer side of the geometric center of the second module 2 with the geometric center of the second module 2 as the center.

[0148] In some embodiments, referring to FIG. 6, the first module 1 includes at least two battery clusters 13, the battery cluster 13 includes at least one first battery device 12, and the heat management pipeline 213 is connected in series and / or parallel to the at least two battery clusters 13.

[0149] The battery cluster 13 can be a device including at least one first battery device 12. At least two battery clusters 13 in the first module 1 are connected in series and / or in parallel through the heat management pipeline 213, which enables the first battery device 12 in at least two battery clusters 13 to be in communication with the first heat exchange assembly 220 through the heat management pipeline 213, thereby achieving heat dissipation of the first battery device 12 in at least two battery clusters 13.

[0150] Exemplarily, at least two battery clusters 13 can be connected in series through the heat management pipeline 213; at least two battery clusters 13 can also be connected in parallel through the heat management pipeline 213; at least two battery clusters 13 can also be connected in series-parallel through the heat management pipeline 213, which means that at least two battery clusters 13 are connected in both series and parallel.

[0151] In some embodiments, the battery cluster 13 includes at least two first battery devices 12, and the heat management pipeline 213 connects the at least two first battery devices 12 in the battery cluster 13 in series and / or in parallel.

[0152] The heat management pipeline 213 connects at least two first battery devices 12 in the same battery cluster 13 in series and / or in parallel, so that each first battery device 12 in the same battery cluster 13 can be smoothly cooled from the outside.

[0153] Exemplarily, at least two first battery devices 12 in the same battery cluster 13 can be connected in series through the heat management pipeline 213; at least two first battery devices 12 in the same battery cluster 13 can also be connected in parallel through the heat management pipeline 213; at least two first battery devices 12 in the same battery cluster 13 can also be connected in series-parallel through the heat management pipeline 213, which means that at least two first battery devices 12 are connected in both series and parallel.

[0154] In some embodiments, referring to FIG. 7, the heat management pipeline 213 includes a first pipe segment 2131, a second pipe segment 2132, and a connecting pipe segment 2133. The first pipe segment 2131 is located in the first warehouse body 11, the second pipe segment 2132 is located in the second warehouse body 20, and the connecting pipe segment 2133 is connected between the first pipe segment 2131 and the second pipe segment 2132 and penetrates the wall body of the second warehouse body 20 and the wall body of the first warehouse body 11.

[0155] The first pipe section 2131, the second pipe section 2132 and the connecting pipe section 2133 can be different pipe sections in the heat management pipeline 213, which are in communication with each other to communicate the first battery device 12 with the heat sink 26. The first pipe section 2131 can be a pipe section located in the first bin body 11 and capable of being in communication with the first battery device 12; the second pipe section 2132 can be a pipe section located in the second bin body 20 and capable of being in communication with the heat sink 26; and the connecting pipe section 2133 is a pipe section connecting the first pipe section 2131 and the second pipe section 2132, which can extend along the vertical direction and penetrate the wall of the second bin body 20 and the wall of the first bin body 11 to be connected between the first pipe section 2131 and the second pipe section 2132 to form a circulation pipeline.

[0156] The heat management pipeline 213 is provided as above, which is conducive to reducing the total length of the pipeline, not only conducive to reducing the manufacturing cost of the energy storage device, but also conducive to shortening the travel distance of the heat exchange medium, and conducive to reducing the energy consumption and operation cost.

[0157] In some embodiments, referring to FIG. 8, the heat management pipeline 213 includes a third pipe section 2134, a fourth pipe section 2135, a fifth pipe section 2136, a first extension pipe section 2137 and a second extension pipe section 2138. The third pipe section 2134 is located in the first bin body 11, the fourth pipe section 2135 is located in the second bin body 20, and the fifth pipe section 2136 is located outside the second bin body 20 and the first bin body 11. The first extension pipe section 2137 is connected between the third pipe section 2134 and the fifth pipe section 2136 and penetrates the wall of the first bin body 11, and the second extension pipe section 2138 is connected between the fourth pipe section 2135 and the fifth pipe section 2136 and penetrates the wall of the second bin body 20.

[0158] The third pipe section 2134, the fourth pipe section 2135, the fifth pipe section 2136, the first extension pipe section 2137 and the second extension pipe section 2138 are different pipe sections in the heat management pipeline 213, which are in communication with each other to communicate the first battery device 12 with the heat sink 26. The third pipe section 2134 can be a pipe section located in the first bin body 11 and capable of being in communication with the first battery device 12; the fourth pipe section 2135 can be a pipe section located in the second bin body 20 and capable of being in communication with the heat sink 26; the fifth pipe section 2136 can be a pipe section located outside the second bin body 20 and the first bin body 11; the first extension pipe section 2137 can be a pipe section connecting the third pipe section 2134 and the fifth pipe section 2136, which can extend along the horizontal direction and penetrate the wall of the first bin body 11; and the second extension pipe section 2138 can be a pipe section connecting the fourth pipe section 2135 and the fifth pipe section 2136, which can extend along the horizontal direction and penetrate the wall of the second bin body 20.

[0159] The heat management pipeline 213 is partially arranged outside the first and second storage bodies 11 and 20, so that the heat management pipeline 213 can be conveniently installed outside the first and second storage bodies 11 and 20, and the installation convenience of the energy storage device is improved.

[0160] In some embodiments, the second extension pipeline segment 2138 is arranged at a distance from the top end of the second storage body 20 that is less than the distance from the bottom end of the second storage body 20.

[0161] Since the first module 1 with the heat sink 26 is arranged on the upper side of the second module 2, by arranging the second extension pipeline segment 2138 at a distance from the top end of the second storage body 20 that is less than the distance from the bottom end of the second storage body 20, the length of the fifth pipeline segment 2136 is shortened, and the cost and energy consumption of the energy storage device are reduced.

[0162] For example, the distance of the second extension pipeline segment 2138 from the top end of the second storage body 20 can be half the distance of the second extension pipeline segment 2138 from the bottom end of the second storage body 20, so that the length of the fifth pipeline segment 2136 is shorter, and the cost and energy consumption of the energy storage device are reduced.

[0163] In some embodiments, the second storage body 20 is detachably connected to the first storage body 11.

[0164] By detachably connecting the second storage body 20 to the first storage body 11, the first module 1 and the second module 2 are conveniently disassembled and assembled, and the energy storage device is conveniently disassembled and assembled.

[0165] For example, the second storage body 20 and the first storage body 11 can be connected in a plug-in manner. For example, a plug-in hole is arranged on the wall of the first storage body 11, a plug-in column is arranged on the wall of the first storage body 11, and the second storage body 20 and the first storage body 11 are conveniently disassembled and assembled by the cooperation of the plug-in column and the plug-in hole.

[0166] In some embodiments, the energy storage device further comprises a third module 3, the third module 3 is arranged on the lower side of the first module 1, the third module 3 comprises a third battery device 32 and a third storage body 31, the third storage body 31 accommodates the third battery device 32, and the third storage body 31 is connected to the lower side of the first storage body 11.

[0167] The third module 3 can be a module of the energy storage device provided with a third battery device 32. The third storage body 31 can be a storage body structure capable of forming a hollow structure in the energy storage device, which can serve as an accommodation space for accommodating the third battery device 32 in the energy storage device, and the third battery device 32 can be protected by the third storage body 31.

[0168] The third bin body 31 is connected to the lower side of the first bin body 11. The third bin body 31 can be located on the lower side of the first bin body 11, and the third bin body 31 is connected to the first bin body 11. The connection mode of the third bin body 31 and the first bin body 11 can be the same as the connection mode of the second bin body 20 and the first bin body 11, or can be different from the connection mode of the second bin body 20 and the first bin body 11.

[0169] In some embodiments, the third bin body 31 connected to the lower side of the first bin body 11 can be arranged on the ground or a bearing platform. The third bin body 31 can be connected to the first bin body 11 by rivets, bolts, connecting pins, etc., or can be connected to the first bin body 11 by welding, bonding, etc. In some embodiments, the connection between the third bin body 31 and the first bin body 11 can be a detachable connection, so that the energy storage device can be modularly disassembled.

[0170] The third bin body 31 can be connected to the ground or a bearing platform by rivets, bolts, etc., or can be connected to the ground or a bearing platform by bonding, etc. In some embodiments, the connection between the third bin body 31 and the ground or the bearing platform can be a detachable connection, so that the energy storage device can be conveniently disassembled.

[0171] In some embodiments, the energy storage device further comprises a fourth module 4 stacked between the first module 1 and the second module 2. The fourth module 4 comprises a second electrical assembly 42 and a fourth bin body 41, the fourth bin body 41 accommodating the second electrical assembly 42, and the second electrical assembly 42 being electrically connected to the first battery device 12.

[0172] The fourth module 4 can be a module provided with the second electrical assembly 42 in the energy storage device. The fourth module 4 is stacked between the first module 1 and the second module 2, so that the fourth module 4 can be closer to the first module 1, which is conducive to the heat generated by the second electrical assembly 42 with a large heat generation in the fourth module 4 being better dissipated to the outside through the first heat exchange assembly 220 of the first module 1.

[0173] The fourth bin body 41 can be a bin body structure capable of forming a hollow structure in the energy storage device, wherein the hollow structure can serve as an accommodation space for accommodating the second electrical assembly 42, and the second electrical assembly 42 can be protected by the fourth bin body 41. The second electrical assembly 42 can include energy storage converters, battery management systems, electrically controlled switches, fire control controllers, etc. These electrical components are electrically connected to the battery device, so that the energy storage device can work normally.

[0174] In some embodiments, in the vertical direction, the fourth bin body 41 is connected between the first bin body 11 and the second bin body 20.

[0175] The fourth bin body 41 is connected between the first bin body 11 and the second bin body 20 in a vertical direction, and can be detachably connected between the first bin body 11 and the second bin body 20, so that the fourth module 4 can be conveniently detached in the energy storage device.

[0176] In some embodiments, the first module 1 further comprises a power conversion device 29, which is arranged in the first bin body 11 and electrically connected with the first battery device 12.

[0177] By integrating the power conversion device 29 electrically connected with the first battery device 12 in the first module 1, the power conversion device 29 can be arranged in the first bin body 11, which is conducive to mounting the power conversion device 29 with the first bin body 11 in the energy storage device and improving the installation convenience of the energy storage device.

[0178] Exemplarily, the power conversion device 29 can be connected to the wall body of the first bin body 11 by bolts, rivets, connecting pins or the like.

[0179] In some embodiments, the second module 2 further comprises a power conversion device 29, which is arranged in the second bin body 20 and electrically connected with the first battery device 12.

[0180] By integrating the power conversion device 29 electrically connected with the first battery device 12 in the second module 2, the power conversion device 29 can be arranged in the second bin body 20, which is conducive to mounting the power conversion device 29 with the second bin body 20 in the energy storage device and improving the installation convenience of the energy storage device.

[0181] Exemplarily, the power conversion device 29 can be connected to the wall body of the second bin body 20 by bolts, rivets, connecting pins or the like.

[0182] In some embodiments, the second module 2 further comprises a fire-fighting tank 28 arranged in the second bin body 20, and the first module 1 further comprises a spraying member 14 in communication with the fire-fighting tank 28, which is arranged in the first bin body 11.

[0183] The second module 2 comprises the fire-fighting tank 28, which can be integrated in the second module 2. By arranging the fire-fighting tank 28 in the second bin body 20, the fire-fighting tank 28 can be mounted with the second bin body 20 in the energy storage device, which is conducive to improving the installation convenience of the energy storage device.

[0184] Exemplarily, the fire-fighting tank 28 can be connected to the wall body of the second bin body 20 by bolts, rivets, connecting pins or the like.

[0185] The first module 1 comprises a spraying member 14, which can be integrated in the first module 1 and communicated with the fire-fighting tank 28. By arranging the spraying member 14 in the first storage body 11, the spraying member 14 can be installed with the first storage body 11 in the energy storage device, which is beneficial to improve the installation convenience of the energy storage device.

[0186] For example, the spraying member 14 can be connected to the wall of the first storage body 11 by a bolt, a rivet, a connecting pin or the like.

[0187] Some embodiments of the present application also provide an energy storage system, which comprises a power conversion device 29 and one or more energy storage devices provided by the above technical solutions, and the power conversion device 29 is used to electrically connect a power generation device and the one or more energy storage devices.

[0188] By electrically connecting the power generation device and the energy storage device by using the power conversion device 29, the electric energy generated by the power generation device can be stored in the energy storage device by the power conversion device 29. For example, the power generation device can be a solar panel, a water power generation device, a fire power generation device, a wind power generation device or the like. Since the energy storage system comprises the energy storage device provided by the above technical solutions, the energy storage system has good reliability.

[0189] For example, the plurality of energy storage devices provided by the above technical solutions can be connected in parallel, so that the electric energy generated by the power generation device can be synchronously stored in the plurality of energy storage devices by the power conversion device 29.

[0190] Some embodiments of the present application provide an energy storage device, which comprises a first module 1, a second module 2, a third module 3 and a fourth module 4, the first module 1 is provided with a first battery device 12, the third module 3 is provided with a third battery device 32, the second module 2 is provided with a first heat exchange assembly 220, and the fourth module 4 is provided with a second electrical assembly 42. The first module 1 is at least two, and the at least two first modules 1 are arranged in a vertical direction. In the vertical direction, the third module 3, the first module 1, the fourth module 4 and the second module 2 are sequentially stacked from bottom to top, and the third bin body 31, the first bin body 11, the fourth bin body 41 and the second bin body 20 are sequentially connected. In the second module 2, the first electrical assembly 23 and the first heat exchange assembly 220 are symmetrically arranged with respect to the geometric center of the second module 2. The second bin body 20 comprises a first top wall 24 and a first side wall 25 connected to each other, the first top wall 24 is provided with at least two second ventilation openings 22, and the projections of the at least two second ventilation openings 22 in the vertical direction are symmetrically arranged with respect to the geometric center of the second module 2; the first side wall 25 is provided with at least two first ventilation openings 21, and the at least two first ventilation openings 21 are symmetrically arranged with respect to the geometric center of the second module 2. In the above structure, since the energy storage device comprises the first module 1 and the second module 2 arranged in a stacked manner, and the first module 1 and the second module 2 respectively comprise the first bin body 11 accommodating the first battery device 12 and the second bin body 20 accommodating the first heat exchange assembly 220, when the energy storage device is assembled, only the first bin body 11 in the assembled first module 1 needs to be connected to the second bin body 20 in the assembled second module 2, without the need to install each functional assembly of the energy storage device on site, which is beneficial to improve the installation convenience of the energy storage device.

[0191] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, comprising: a first module comprising a first housing and a first battery device, the first housing accommodating the first battery device; a second module comprising a second housing and a first heat exchange assembly, the second housing accommodating the first heat exchange assembly; the second module being stacked on an upper side of the first module, the second housing being connected with the first housing.

2. The energy storage device of claim 1, wherein, The first module is provided with at least two, at least two first modules are stacked in a vertical direction, and adjacent two first housings are connected.

3. The energy storage device of claim 1 or 2, wherein, A center of gravity of the second module is configured to be located at a geometric center of the second module.

4. The energy storage device of any one of claims 1 to 3, wherein, The second module further comprises a first electrical assembly, the second housing accommodating the first electrical assembly, and the first electrical assembly being electrically connected with the first battery device.

5. The energy storage device of claim 4, wherein, The first electrical assembly and the first heat exchange assembly are symmetrically arranged with respect to the geometric center of the second module.

6. The energy storage device of any one of claims 1 to 4, wherein, The second housing is provided with a first ventilation opening and a second ventilation opening, and the first ventilation opening and the second ventilation opening are both communicated with an interior of the second housing.

7. The energy storage device of claim 6, wherein, The second housing comprises a first top wall and a first side wall connected with each other, the second ventilation opening is arranged on the first top wall, and the first ventilation opening is arranged on the first side wall.

8. The energy storage device of claim 7, wherein, A projection of the second ventilation opening in a vertical direction covers the geometric center of the second module.

9. The energy storage device of claim 7, wherein, The second ventilation opening is provided with at least two, and projections of at least two second ventilation openings in a vertical direction are symmetric with respect to the geometric center of the second module.

10. The energy storage device of any one of claims 7 to 9, wherein, The first ventilation opening is provided with at least two, and at least two first ventilation openings are symmetrically arranged with respect to the geometric center of the second module.

11. The energy storage device of any one of claims 1 to 10, wherein, A center of gravity of the first module is configured to be located at a geometric center of the first module.

12. The energy storage device of any one of claims 1 to 11, wherein, The first battery device in the first module is provided with at least two, and at least two first battery devices are symmetrically arranged with respect to the geometric center of the first module.

13. The energy storage device of any one of claims 1 to 12, wherein, The second module comprises a maintenance assembly, and the maintenance assembly is arranged in the second housing.

14. The energy storage device of any one of claims 6 to 13, wherein, The first heat exchange assembly comprises a heat sink and a fan, the heat sink is arranged in the second housing, an air inlet of the fan is communicated with the second housing, and an air outlet of the fan is communicated with the second ventilation opening; the energy storage device further comprises a heat management pipeline, and the heat management pipeline communicates the heat sink and the first battery device.

15. The energy storage device of claim 14, wherein, The first heat exchange assembly further comprises a compressor and a circulating pump, the heat management pipeline sequentially communicates the compressor, the heat sink, the first battery device and the circulating pump, and the compressor, the heat sink, the first battery device and the circulating pump are symmetrically arranged with respect to the geometric center of the second module.

16. The energy storage device of claim 15, wherein, The compressor is provided with at least two, and at least two compressors are symmetrically arranged with respect to the geometric center of the second module.

17. The energy storage device of any one of claims 14 to 16, wherein, The fan is provided with at least two, and at least two fans are symmetrically arranged with respect to the geometric center of the second module.

18. The energy storage device of any one of claims 14 to 17, wherein, The first module comprises at least two battery clusters, each battery cluster comprises at least one first battery device, and the heat management pipeline is connected in series and / or parallel to at least two battery clusters.

19. The energy storage device of claim 18, wherein, The battery cluster comprises at least two first battery devices, and the heat management pipeline is connected in series and / or in parallel to the at least two first battery devices in the battery cluster.

20. The energy storage device of any one of claims 14 to 19, wherein, The heat management pipeline comprises a first pipe segment, a second pipe segment and a connecting pipe segment, the first pipe segment is located in the first warehouse body, the second pipe segment is located in the second warehouse body, and the connecting pipe segment is connected between the first pipe segment and the second pipe segment and penetrates the wall body of the second warehouse body and the wall body of the first warehouse body.

21. The energy storage device of any one of claims 14 to 19, wherein, The heat management pipeline comprises a third pipe segment, a fourth pipe segment, a fifth pipe segment, a first extension pipe segment and a second extension pipe segment, the third pipe segment is located in the first warehouse body, the fourth pipe segment is located in the second warehouse body, the fifth pipe segment is located outside the second warehouse body and the first warehouse body, the first extension pipe segment is connected between the third pipe segment and the fifth pipe segment and penetrates the wall body of the first warehouse body, and the second extension pipe segment is connected between the fourth pipe segment and the fifth pipe segment and penetrates the wall body of the second warehouse body.

22. The energy storage device of claim 21, wherein, The distance between the second extension pipe segment and the top end of the second warehouse body is less than the distance between the second extension pipe segment and the bottom end of the second warehouse body.

23. The energy storage device of any one of claims 1-22, wherein, The second warehouse body is detachably connected with the first warehouse body.

24. The energy storage device of any one of claims 1-23, wherein, The energy storage device further comprises a third module, the third module is arranged on the lower side of the first module, the third module comprises a third battery device and a third warehouse body, the third warehouse body contains the third battery device, and the third warehouse body is connected to the lower side of the first warehouse body.

25. The energy storage device of any one of claims 1-24, wherein, The energy storage device further comprises a fourth module arranged between the first module and the second module, the fourth module comprises a second electrical component and a fourth warehouse body, the fourth warehouse body contains the second electrical component, and the second electrical component is electrically connected with the first battery device.

26. The energy storage device of claim 25, wherein, In the vertical direction, the fourth warehouse body is connected between the first warehouse body and the second warehouse body.

27. The energy storage device of any one of claims 1-26, wherein, The first module further comprises a power conversion device, the power conversion device is arranged in the first warehouse body and is electrically connected with the first battery device.

28. The energy storage device of any one of claims 1 to 26, wherein, The second module further comprises a power conversion device, the power conversion device is arranged in the second warehouse body and is electrically connected with the first battery device.

29. The energy storage device of any one of claims 1-28, wherein, The second module further comprises a fire-fighting tank body, the fire-fighting tank body is arranged in the second warehouse body, and the first module further comprises a spraying member in communication with the fire-fighting tank body, the spraying member is arranged in the first warehouse body.

30. An energy storage system, comprising: a power conversion device; one or more energy storage devices according to any one of claims 1 to 29, and the power conversion device is used to electrically connect a power generation device and the one or more energy storage devices.

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