Energy storage device and energy storage system

Abstract

The application discloses an energy storage device and an energy storage system, and particularly relates to the technical field of energy storage devices, which comprises a current conversion device, a voltage conversion device, a frame assembly and an enclosure assembly. The current conversion device and the voltage conversion device are arranged at intervals along a first direction. The frame assembly contains the current conversion device and the voltage conversion device, and the frame assembly has an air outlet located on one side of the voltage conversion device in a second direction. The enclosure assembly comprises a first partition plate connected with the frame assembly, and the first partition plate is arranged on one side of the air outlet close to the current conversion device. The first partition plate is arranged on the side of the air outlet away from the voltage conversion device, and the first partition plate controls the directional flow of the hot air discharged by the voltage conversion device. The first partition plate forms a physical flow guide barrier, so that the hot air cannot directly spread to the direction of the current conversion device, but forms a heat buffering effect through the extension of the airflow path, thereby significantly reducing the influence of the hot air discharged by the voltage conversion device on the ambient temperature of the current conversion device.

Description

Technical Field

[0001] This application belongs to the field of energy storage equipment technology, specifically relating to an energy storage device and an energy storage system. Background Technology

[0002] In practical use, the hot air discharged from the transformer of the energy storage device will increase the ambient temperature at the air inlet of the energy storage converter, causing the temperature of the energy storage converter to rise. When the temperature reaches the set threshold, the energy storage converter may operate at a reduced rate or even shut down. Utility Model Content

[0003] In view of this, this application discloses an energy storage device to reduce the impact of transformer hot air on the ambient temperature of the energy storage converter inlet; another objective of the embodiments of this application is to provide an energy storage system.

[0004] Technical solution: In a first aspect, embodiments of this application provide an energy storage device, comprising:

[0005] A converter and a transformer are arranged along the first direction;

[0006] A frame assembly that houses the converter and the transformer, the frame assembly having an air outlet located on one side of the transformer in a second direction, the second direction intersecting the first direction;

[0007] The enclosure assembly includes a first partition connected to the frame assembly, the first partition being disposed on the side of the air outlet near the converter.

[0008] In some embodiments, the enclosure assembly further includes a second partition, a third partition, and a fourth partition, wherein the first partition, the third partition, the second partition, and the fourth partition are connected end to end in sequence to form a guide channel communicating with the air outlet.

[0009] In some embodiments, the first partition, the second partition, the third partition, and the fourth partition are detachably connected by a connector.

[0010] In some embodiments, when the first partition, the second partition, the third partition, and the fourth partition are separated, the first partition, the second partition, the third partition, and the fourth partition are folded together and cover the air outlet.

[0011] In some embodiments, the energy storage device further includes at least one crossbeam disposed between the third partition and the fourth partition to allow the third partition and the fourth partition to be detachably connected; or, the crossbeam is disposed between the first partition and the second partition to allow the first partition and the second partition to be detachably connected.

[0012] In some embodiments, the frame assembly includes a partition disposed between the converter and the transformer.

[0013] In some embodiments, the energy storage device further includes a cover plate located on the side of the first partition facing the converter and connected to the frame assembly, wherein the orthographic projections of the cover plate and the converter in the second direction at least partially overlap.

[0014] In some embodiments, a drainage outlet is provided at the connection between the cover plate and the frame assembly.

[0015] In some embodiments, the side of the cover plate away from the frame assembly is tilted toward the interior space opposite to the frame assembly.

[0016] Secondly, embodiments of this application also provide an energy storage system, which includes the energy storage device described in any of the above claims, or includes the energy storage device described above.

[0017] Several embodiments of this application have one of the following beneficial effects:

[0018] An energy storage device is provided, comprising a converter, a transformer, a frame assembly, and a containment assembly. The converter and transformer are arranged at intervals along a first direction. The frame assembly houses the converter and transformer and has an air outlet located on one side of the transformer in a second direction. The containment assembly includes a first partition connected to the frame assembly, which is disposed on the side of the air outlet near the converter. The first partition is disposed on the side of the air outlet away from the transformer to implement directional flow control of the hot air discharged from the transformer. The first partition constructs a physical flow barrier, preventing the hot air from directly diffusing towards the converter. Instead, it extends the airflow path to form a thermal buffer effect, significantly reducing the impact of the hot air discharged from the transformer on the ambient temperature of the converter. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the state structure of an energy storage device provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the overall structure of the energy storage device provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of another state structure of the energy storage device provided in the embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the fencing component structure provided in an embodiment of this application;

[0024] Figure 5 Provided for the embodiments of this application Figure 1 Enlarged view of point A in the middle;

[0025] Explanation of reference numerals in the attached figures:

[0026] X - First direction; Y - Second direction; Z - Third direction;

[0027] 100 - Frame assembly; 110 - Air outlet; 120 - First frame; 121 - First support component; 130 - Second frame; 131 - Second support component; 140 - Partition component;

[0028] 200 - Fence assembly; 210 - First partition; 220 - Second partition; 230 - Third partition; 240 - Fourth partition; 250 - Bend;

[0029] 300-flow channel;

[0030] 400 - Connector;

[0031] 500 - Crossbeam;

[0032] 600 - Cover plate; 610 - Drain outlet;

[0033] 700 - Converter; 710 - Flow deflector;

[0034] 800-Transformer;

[0035] 900 - Fastener. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, although the terms "first," "second," etc., may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Therefore, the first component discussed below may be referred to as the second component without departing from the teachings of this application. As used herein, the term "and / or" includes any and all combinations of any one or more of the associated listed items.

[0038] In the description of this application, "multiple" means two or more, and "at least one" means one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, an angle of 80° to 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, a completely parallel angle of 10° is considered parallel.

[0039] It should also be noted that in the accompanying drawings of this application, arrows labeled X indicate the first direction X, arrows labeled Y indicate the second direction Y, and arrows labeled Z indicate the third direction Z. The introduction of the first direction X, the second direction Y, and the third direction Z is to facilitate the description of the structural positional relationships of the energy storage device, thereby making its structure easier to understand. In the embodiments of this application, the first direction X is the length direction of the energy storage device, which is also the arrangement direction of the converter and transformer; the second direction Y is the height direction of the energy storage device; and the third direction Z is the width direction of the energy storage device; moreover, the first direction X, the second direction Y, and the third direction Z intersect each other, specifically, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0040] In practical use, there is a phenomenon where the hot air discharged from the transformer of energy storage equipment increases the ambient temperature at the air inlet of the energy storage converter, causing the temperature of the energy storage converter to rise. When the temperature reaches the set threshold, the energy storage converter may operate at a reduced rate or even shut down.

[0041] In view of this, embodiments of this application provide an energy storage device to reduce the impact of hot air discharged from the transformer on the ambient temperature at the air inlet of the converter, thereby solving at least part of the above-mentioned technical problems.

[0042] Please see Figure 1 , Figure 1This is a schematic diagram of the state structure of an energy storage device provided in an embodiment of this application. This embodiment discloses an energy storage device including a converter 700, a transformer 800, a frame assembly 100, and a containment assembly 200. The converter 700 and the transformer 800 are arranged at intervals along a first direction X. The frame assembly 100 houses the converter 700 and the transformer 800, and has an air outlet 110 located on one side of the transformer 800 in a second direction Y. The containment assembly 200 includes a first partition 210 connected to the frame assembly 100, and the first partition 210 is disposed on the side of the air outlet 110 near the converter 700.

[0043] It should be noted that the converter 700 can be a power conversion system (PCS), used to connect energy storage devices (such as batteries, supercapacitors, etc.) to the power grid or load. The transformer 800 can be an oil-fired transformer, which uses mineral oil as the insulation and cooling medium to step up or step down AC power through the principle of electromagnetic induction.

[0044] It should be noted that the air outlet 110 is located on one side of the transformer 800 in the second direction Y. In this embodiment, the air outlet 110 is located above the transformer 800. The air outlet 110 is connected to the exhaust port of the transformer 800, that is, the hot air discharged from the transformer 800 is directed to the external environment from the air outlet 110.

[0045] It should be noted that the first partition 210 is located on the side of the air outlet 110 facing away from the transformer 800 and is horizontally mounted on the frame assembly 100. That is, the side of the first partition 210 closest to the transformer 800 on opposite sides in the second direction Y is connected to the frame assembly 100. The first partition 210, located on the side of the air outlet 110 closest to the converter 700, guides the hot air discharged from the transformer 800 to a certain extent, that is, it guides the hot air to flow in the first direction X through a physical barrier, so that the hot air discharged from the transformer 800 cannot flow directly to the converter 700. In a stable environment, the first partition 210 forces the hot air discharged from the transformer 800 to exit along a preset path, causing the hot air to flow in the second direction Y. Even if there is ambient wind blowing from the transformer 800 towards the converter 700, the hot air discharged from the transformer 800 still flows along the surface of the first partition 210 in the first direction X, creating a certain buffer time. Relatively speaking, the influence of the hot air from the transformer 800 on the ambient temperature of the converter 700 is reduced to a certain extent. That is, the guiding effect of the first partition 210 forms a thermal buffering effect, significantly reducing the heat transfer efficiency between the transformer 800 and the converter 700.

[0046] Through the above technical solution, in this embodiment, a first baffle 210 is provided on the side of the air outlet 110 away from the transformer 800 to implement a certain directional flow control for the hot air discharged from the transformer 800. The first baffle 210 is structurally fixed to the frame assembly 100 in the lateral direction (i.e., the third direction Z) to construct a physical flow barrier, preventing the hot air from directly diffusing towards the converter 700. Instead, it forms a thermal buffer effect by extending the airflow path, significantly reducing the impact of the hot air discharged from the transformer 800 on the ambient temperature of the converter 700.

[0047] In some examples, the frame assembly 100 adopts a modular design, and may include a first frame 120, a partition 140, and a second frame 130 arranged side-by-side along a first direction X. The converter 700 and the transformer 800 are independently housed within their respective frames (the converter 700 is housed within the second frame 130, and the transformer 800 is housed within the first frame 120), physically isolated by the partition 140 located between them. Specifically, both the first frame 120 and the second frame 130 are formed by at least twelve beams. Furthermore, the first frame 120 and the second frame 130 can also form a compact support structure by sharing some structural beams, ensuring both space utilization and enhanced overall stability. This frame combination design meets equipment installation requirements while effectively blocking the heat conduction path between the converter 700 and the transformer 800 through the partition 140. The specific number of beams in the first frame 120 and the second frame 130 is not specifically limited in this embodiment.

[0048] In some embodiments, such as Figure 1 As shown, the first partition 210 guides the hot air discharged from the transformer 800 in the first direction X. To further reduce the impact of the hot air discharged from the transformer 800 on the ambient temperature of the converter 700, the enclosure assembly 200 also includes a second partition 220, a third partition 230, and a fourth partition 240. The first partition 210, the third partition 230, the second partition 220, and the fourth partition 240 are connected end to end in sequence, forming a guide channel 300 that communicates with the air outlet 110.

[0049] It should be noted that the flow channel 300 has two openings opposite each other in the second direction Y. The opening closer to the transformer 800 is connected to or coplanar with the air outlet 110, while the other opening faces the external environment to facilitate the exhaust of hot air to the external environment. The arrangement of the first baffle 210, the third baffle 230, the second baffle 220, and the fourth baffle 240 prevents the hot air exhausted from the transformer 800 from flowing directly from the third direction Z to affect the ambient temperature of the converter 700. Instead, it needs to flow along the extension direction of the flow channel 300 (i.e., the second direction Y) to create a buffer time before being discharged through the flow channel 300. Even if the hot air discharged from the flow channel 300 is guided to the converter 700 by the ambient wind, its thermal impact on the ambient temperature of the converter 700 is significantly lower than that of traditional technical solutions. In other words, the flow channel 300, formed by the first partition 210, the third partition 230, the second partition 220, and the fourth partition 240, effectively blocks direct heat diffusion in the first direction X and the third direction Z through its three-dimensional spatial layout, forcing the hot air to flow a certain distance along the flow channel 300 in the first direction X. This design, by extending the heat exchange path to form a natural cooling buffer, ensures that even if the finally discharged hot air is affected by ambient wind and returns to the converter 700 area, its thermal radiation intensity is reduced compared to traditional solutions.

[0050] It is understood that the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 are all connected to the frame assembly 100. Specifically, the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 are all hinged to the first frame 120. The hinge structure enables the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 to rotate or open and close. The first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 can be hinged to the top of the first frame 120, allowing the first partition 210 and the second partition 220 to rotate about the third direction Z as the central axis, and allowing the third partition 230 and the fourth partition 240 to rotate about the first direction X as the central axis; alternatively, the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 can be hinged to the first frame 120 using pins; or a combination of hinges and pins can be used (i.e., some partitions are hinged and others are pinned).

[0051] Through the above technical solution, the flow channel 300 formed by the first partition 210, the third partition 230, the second partition 220, and the fourth partition 240 not only forces the hot air discharged from the transformer 800 to flow in a preset direction, avoiding disorderly diffusion, but also forms a thermal buffer effect by extending the airflow path, effectively reducing the instantaneous thermal shock to the converter 700. Simultaneously, the physical isolation structure cuts off the direct heat conduction channel between the transformer 800 and the converter 700, and the ambient wind further dilutes the hot air discharged from the flow channel 300, ultimately resulting in a significantly lower impact on the ambient temperature of the converter 700 compared to traditional technical solutions.

[0052] In some embodiments, such as Figure 2 As shown, to facilitate the transportation of this energy storage device, the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 are detachably connected by a connector 400. That is, adjacent partitions among the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 are detachable.

[0053] It should be noted that the first partition 210 and the third partition 230 are connected at their contact points via a connector 400. Specifically, the first partition 210 is connected to the connector 400, and the third partition 230 is connected to the connector 400, thus achieving the connection between the first partition 210 and the third partition 230. Specifically, the connection between the connector 400 and the first partition 210, as well as the connection between the connector 400 and the third partition 230, is detachable. Similarly, the first partition 210 and the fourth partition 240 are connected at their contact points via a connector 400. Specifically, the connection between the connector 400 and the first partition 210, as well as the connection between the connector 400 and the fourth partition 240, is detachable. The second partition 220 and the third partition 230 are connected at their contact points via a connector 400. Specifically, the second partition 220 is connected to the connector 400, and the third partition 230 is connected to the connector 400, thus establishing a connection between the two partitions. Specifically, the connections between the connector 400 and the second partition 220, and between the connector 400 and the third partition 230, are detachable. Similarly, the first partition 210 and the fourth partition 240 are connected at their contact points via a connector 400. Specifically, the first partition 210 is connected to the connector 400, and the fourth partition 240 is connected to the connector 400, thus establishing a connection between the two partitions. Specifically, the connections between the connector 400 and the first partition 210, and between the connector 400 and the fourth partition 240, are detachable.

[0054] Through the above technical solution, the flow channel 300 adopts a structure that integrates hinged and detachable connections. Specifically, in the transportation state, the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 can all be folded along the hinge axis and stored inside the first frame 120, compressing the overall height and significantly reducing the transportation volume. In use, the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 are all unfolded outward to a preset working angle (the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 all face away from the transformer 800), and then the cross-plates are fixed by the connector 400 and quick bolts. In other words, this embodiment significantly optimizes transportation convenience. During transportation, each partition can be folded along the hinge axis and stored inside the first frame 120, compressing the overall height and greatly reducing the transportation volume. Secondly, it improves the structural stability during use. During the use stage, each partition is unfolded to a preset angle and fixed across the partition with the help of the connector 400 and quick bolts to ensure the stability of the guide channel 300. It also has high operational efficiency. The entire folding, storage and unfolding and fixing process is simple, which not only achieves flexible transportation but also meets the usage requirements.

[0055] In some embodiments, such as Figure 3 As shown, when the first partition 210, second partition 220, third partition 230, and fourth partition 240 are separated, they fold over each other and cover the air outlet 110. That is, when the first partition 210, second partition 220, third partition 230, and fourth partition 240 are separated, these partitions have the characteristic of folding over each other. Specifically, each partition can fold over each other sequentially according to a preset folding method and a reasonable rotation path. Finally, the folded first partition 210, second partition 220, third partition 230, and fourth partition 240 can neatly cover the air outlet 110.

[0056] It should be noted that the first frame 120 includes at least one first support member 121. The first support member 121 can be connected to two beams of the first frame 120 that are arranged opposite each other in the third direction Z. That is, the third partition 230 and the fourth partition 240 can be flipped over to overlap the first support member 121, and the first partition 210 and the second partition 220 can be flipped over to overlap the third partition 230 and the fourth partition 240, so that the first partition 210, the second partition 220, the third partition 230 and the fourth partition 240 can be folded to neatly cover the air outlet 110. Alternatively, the first support member 121 can be connected to two beams of the first frame 120 that are opposite to each other in the first direction X. That is, the first partition 210 and the second partition 220 can be flipped over to overlap the first support member 121, and the third partition 230 and the fourth partition 240 can be flipped over to overlap the first partition 210 and the second partition 220, so that the first partition 210, the second partition 220, the third partition 230 and the fourth partition 240 can be folded to neatly cover the air outlet 110.

[0057] In some examples, to ensure the flatness of the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 after they are folded together, when the first support member 121 is connected to the two beams of the first frame 120 that are opposite each other in the third direction Z, the third partition 230 is bent at the overlap with the first support member 121 to form a bent portion 250. Similarly, the fourth partition 240 is also bent at the overlap with the first support member 121, so that when the third partition 230 and the fourth partition 240 overlap the first support member 121, the third partition 230 and the fourth partition 240 are flush. When the first support member 121 is connected to the two beams of the first frame 120 that are opposite to each other in the first direction X, the first partition 210 is bent at the joint with the first support member 121 to form a bent portion 250. Similarly, the second partition 220 is also bent at the joint with the first support member 121, so that when the first partition 210 and the second partition 220 are attached to the first support member 121, the first partition 210 and the second partition 220 are flush.

[0058] Through the above technical solution, the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 remain flat after folding, avoiding damage from collisions during transportation due to unevenness. It also optimizes the storage effect, reduces space occupation, and improves transportation convenience. At the same time, a stable support structure is formed at the joint. Whether the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 are folded to cover the air outlet 110 or unfolded to enclose the airflow channel 300, the stress can be better distributed, ensuring the stability of the equipment structure. In addition, the flat folded state also makes it easier for the partitions to be aligned and connected during assembly, reducing installation difficulty, improving work efficiency, and providing convenience for subsequent maintenance such as disassembly, inspection, and replacement of the equipment.

[0059] In some examples, such as Figure 3 As shown, this embodiment also includes a fixing member 900. When the first partition 210, the second partition 220, the third partition 230, and the fourth partition 240 are folded over the air outlet 110, there are multiple connection methods to ensure the stability between the partitions. First, the third partition 230 can be connected to the first partition 210 by one fixing member 900, and the fourth partition 240 can be connected to the second partition 220 by another fixing member 900. Second, the third partition 230 can be connected to the second partition 220 by one fixing member 900, and the fourth partition 240 can be connected to the first partition 210 by another fixing member 900. Third, the third partition 230 can be connected to the first partition 210 and the second partition 220 respectively by two fixing members 900, and the fourth partition 240 can be connected to the first partition 210 and the second partition 220 respectively by two other fixing members 900.

[0060] It should be noted that the mounting position of the fastener 900 is flexible; it can be mounted on the first partition 210 and the second partition 220, or on the third partition 230 and the fourth partition 240. Furthermore, in practical applications, the fastener 900 can be a hinge, secured with screws for both stability and flexible rotation; or a snap fastener, using a fastener seat and hook for easy operation; or a magnet, using magnetic force to adhere to the partition for convenient installation; or a combination of bolts and nuts, tightened through pre-drilled holes in the partition for high stability.

[0061] Through the above technical solution, the setting of the fastener 900 can effectively prevent the partition from turning over during transportation, taking into account the stability of the connection, the ease of operation and the flexibility of installation, and improving the reliability of the structure during equipment transportation.

[0062] In some embodiments, such as Figure 1 , Figure 2 , Figure 3As shown, to enhance the structural stability of the first partition 210, second partition 220, third partition 230, and fourth partition 240 when they are deployed to form the flow channel 300, the energy storage device also includes at least one crossbeam 500. The crossbeam 500 has two layout configurations: when installed between the third partition 230 and the fourth partition 240, the crossbeam 500 enables the third partition 230 and the fourth partition 240 to achieve a separable connection, sharing the pressure of the airflow on the partitions through its own support, and preventing the partitions from deforming due to airflow impact; the other configuration is to place the crossbeam 500 between the first partition 210 and the second partition 220, allowing the first partition 210 and the second partition 220 to achieve a separable connection, which also serves to reinforce the flow channel 300. At the same time, the detachable connection feature also brings great convenience to the transportation and daily maintenance of energy storage equipment. During transportation, staff can easily remove the crossbeam 500, reducing the overall size of the equipment and reducing transportation difficulty; during maintenance, it is convenient to independently inspect and replace each partition, effectively improving the operation and maintenance efficiency of the equipment.

[0063] In some embodiments, to further optimize the thermal management performance of the energy storage device and reduce the impact of the hot air discharged from the transformer 800 on the operating environment of the converter 700, the energy storage device in this embodiment is further provided with a cover plate 600. The cover plate 600 is located on the side of the first partition 210 facing the converter 700 and can be reliably connected to the frame assembly 100 by bolts, welding or riveting. From a spatial layout perspective, the orthographic projections of the cover plate 600 and the converter 700 in the second direction Y (i.e., the height direction of the energy storage device) at least partially overlap.

[0064] Specifically, the cover plate 600 is positioned on top of the second frame 130. This arrangement forms a thermal barrier, further preventing hot air from directly flowing to the converter 700, building upon the initial guidance of the hot air discharged from the transformer 800 via the guide channel 300. On one hand, when the hot air discharged from the transformer 800 is discharged through the outlet 110 and flows under the guidance of the guide channel 300, the cover plate 600 can block the hot air from being deflected due to factors such as ambient wind, preventing it from accidentally spreading to the vicinity of the converter 700. On the other hand, even if a small amount of hot air bypasses the first partition 210, the cover plate 600 can effectively intercept it, preventing it from affecting the ambient temperature near the converter 700, thereby significantly improving the stability of the operating environment of the converter 700 and ensuring the stable and efficient operation of the energy storage equipment. In addition, the presence of the cover plate 600 can also, to a certain extent, prevent dust, foreign objects, etc., from entering the area of ​​the converter 700, reducing the risk of equipment failure caused by foreign objects and extending the service life of the equipment.

[0065] Through the above technical solution, the cover plate 600 significantly improves the thermal management efficiency and equipment reliability of the energy storage device. By being securely connected to the frame assembly 100 and positioned on top of the second frame 130, it overlaps with the projected portion of the converter device 700 in the height direction, constructing a thermal barrier. Together with the airflow channel 300, it prevents hot air from being deflected to the vicinity of the converter device 700 due to ambient wind, intercepts a small amount of hot air bypassing the first partition 210, stabilizes the operating temperature of the converter device 700, and ensures stable operation of the energy storage device. Furthermore, it prevents dust and foreign objects from entering the converter device 700 area, reducing the risk of equipment failure and extending the equipment's service life.

[0066] In some examples, such as Figure 1 and Figure 3 As shown, the air inlet of the converter 700 is located on one side of the converter 700 in the third direction Z. The converter 700 has a flow guide shroud 710, which draws the gas near the converter 700 into the flow guide shroud 710. The orthogonal projection of the cover plate 600 in the second direction Y covers the flow guide shroud 710. When the hot air discharged from the transformer 800 flows under the guidance of the first partition 210, the cover plate 600 acts as a thermal barrier to prevent the hot air from deviating from the predetermined path due to factors such as ambient wind, thus preventing the hot air from accidentally flowing into the flow guide shroud 710.

[0067] In some examples, the cover plate 600 and the second frame 130 are securely connected by bolts, welding, or riveting. When bolted, bolt holes are pre-drilled at corresponding positions on the top of the second frame 130 and the cover plate 600. The use of bolts and nuts facilitates installation and subsequent maintenance disassembly, while also ensuring the reliability of the connection. Welding involves directly welding the cover plate 600 and the top of the second frame 130 together, forming a robust whole and enhancing structural stability. Riveting uses rivets inserted through pre-drilled holes in the cover plate 600 and the second frame 130 to achieve a tight connection. At the connection point, the cover plate 600 is positioned on top of the second frame 130, effectively providing thermal insulation. Furthermore, depending on the actual size of the energy storage device, the layout of the converter 700, and thermal management requirements, one or more cover plates 600 may be used.

[0068] It should be noted that, as Figure 1 , Figure 3 and Figure 4As shown, the second frame 130 is equipped with a second support member 131. Located between two beams arranged opposite each other in the third direction Z (equipment width direction) and above the converter 700, one or more second support members 131 can be installed as needed. When only one second support member 131 is installed, two cover plates 600 are correspondingly configured. These two cover plates 600 are laid on both sides of the second support member 131 along the first direction X (equipment length direction), and each cover plate 600 has at least one side connected to the second frame 130, forming a stable protective structure. If multiple second support members 131 are installed, the number of cover plates 600 is always one more than the number of second support members 131. Cover plates 600 are symmetrically arranged on both sides of each second support member 131 along the first direction X. Each cover plate 600, while tightly fitting with the second support member 131, also has at least one side reliably connected to the second frame 130. This layout not only fits the spatial structure of the equipment, but also significantly improves the overall efficiency of thermal management of the energy storage equipment, and comprehensively reduces the impact of the hot air discharged from the transformer 800 on the operating environment of the converter 700.

[0069] In some embodiments, such as Figure 1 and Figure 5 As shown, a drain outlet 610 is provided at the connection between the cover plate 600 and the frame assembly 100. The design and layout of the drain outlet 610 fully considers the actual operating environment and spatial structure of the equipment. By setting the drain outlet 610 at the connection between the two, when rainwater flows into the connection along the surface of the cover plate 600, the accumulated water can be quickly and naturally discharged to the outside of the equipment through the drain outlet 610 under the action of gravity. In this way, not only is it possible to avoid damage such as short circuits and corrosion to the electrical components inside the equipment caused by accumulated water, effectively extending the service life of the equipment and reducing maintenance costs, but it also ensures the stable operation of the energy storage equipment under different environmental conditions, improves the overall reliability and safety of the equipment, and ensures that the equipment always maintains a good working condition under complex and changing natural environments and operating conditions.

[0070] In some embodiments, such as Figure 5As shown, to further optimize the waterproofing and drainage performance of the energy storage device, the side of the cover plate 600 away from the frame assembly 100 is tilted towards the internal space away from the frame assembly 100. Specifically, the cover plate 600 is connected to the second frame 130, and with the second frame 130 as a reference, the side away from the second frame 130 is raised upwards. From a view perpendicular to the top surface of the second frame 130, the cover plate 600 exhibits a certain angle of tilt, creating a slope on its surface that gradually rises from the side closer to the second frame 130 to the side farther away from the second frame 130. The tilt angle was determined through rigorous fluid dynamics calculations and simulation tests to ensure that water can quickly slide off the surface of the cover plate 600, preventing water accumulation on the cover plate 600. This design not only prevents rainwater from seeping into the equipment and causing short circuits, corrosion, and other damage to internal electrical components, but also... In addition, the inclined cover plate 600 reduces the adhesion and accumulation of foreign objects on the surface of the cover plate 600, reduces the risk of foreign objects blocking the drain outlet 610, comprehensively ensures the stable operation of energy storage equipment in various complex environments, improves the durability and reliability of the equipment, significantly reduces the probability of equipment failure caused by environmental factors, and reduces operation and maintenance costs.

[0071] Accordingly, the energy storage device provided in this application includes the energy storage device of any of the above embodiments. Therefore, the battery pack can have all the technical features and beneficial effects of the above-described energy storage devices, which will not be repeated here.

[0072] Accordingly, the energy storage system provided in this application includes the energy storage device of any of the above embodiments, or includes the energy storage device of the above embodiments, and thus can have all the technical features and technical effects of the above energy storage device, which will not be repeated here.

[0073] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0074] The energy storage device and energy storage system provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An energy storage device, characterized in that, include: A converter (700) and a transformer (800) are arranged along a first direction (X); A frame assembly (100) housing the converter (700) and the transformer (800), the frame assembly (100) having an air outlet (110) located on one side of the transformer (800) in a second direction (Y), the second direction (Y) intersecting the first direction (X); The enclosure assembly (200) includes a first partition (210) connected to the frame assembly (100), the first partition (210) being disposed on the side of the air outlet (110) near the converter (700).

2. The energy storage device according to claim 1, characterized in that, The enclosure assembly (200) further includes a second partition (220), a third partition (230) and a fourth partition (240), wherein the first partition (210), the third partition (230), the second partition (220) and the fourth partition (240) are connected end to end in sequence and form a guide channel (300) communicating with the air outlet (110).

3. The energy storage device according to claim 2, characterized in that, The first partition (210), the second partition (220), the third partition (230), and the fourth partition (240) are detachably connected by a connector (400).

4. The energy storage device according to claim 3, characterized in that, When the first partition (210), the second partition (220), the third partition (230), and the fourth partition (240) are separated, the first partition (210), the second partition (220), the third partition (230), and the fourth partition (240) fold over each other and cover the air outlet (110).

5. The energy storage device according to claim 2, characterized in that, The energy storage device further includes at least one crossbeam (500) disposed between the third partition (230) and the fourth partition (240) so that the third partition (230) and the fourth partition (240) are detachably connected; or, the crossbeam (500) is disposed between the first partition (210) and the second partition (220) so that the first partition (210) and the second partition (220) are detachably connected.

6. The energy storage device according to any one of claims 2 to 5, characterized in that, The frame assembly (100) includes a partition (140) disposed between the converter (700) and the transformer (800).

7. The energy storage device according to claim 6, characterized in that, It also includes a cover plate (600) located on the side of the first partition (210) facing the converter (700) and connected to the frame assembly (100), wherein the orthographic projections of the cover plate (600) and the converter (700) in the second direction (Y) at least partially overlap.

8. The energy storage device according to claim 7, characterized in that, A drain outlet (610) is provided at the connection between the cover plate (600) and the frame assembly (100).

9. The energy storage device according to claim 8, characterized in that, The cover plate (600) is inclined toward the interior space away from the frame assembly (100) on the side away from the frame assembly (100).

10. An energy storage system, characterized in that, The energy storage system includes the energy storage device as described in any one of claims 1 to 8, or includes the energy storage device as described in claim 9.

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