Energy storage box and energy storage system

Abstract

The utility model discloses an energy storage box and an energy storage system, and belongs to the technical field of battery boxes, the energy storage box comprises a box body and a cover plate assembly, the box body is provided with an opening, the box body comprises a first plate and a second plate which are oppositely arranged, the opening is formed in the first plate, and the first plate is provided with a first surface back to the second plate. The cover plate assembly covers the opening and is provided with a second surface back to the second plate, and the second surface is arranged in a sunken mode towards the side close to the second plate relative to the first surface. According to the invention, dependence on external space is reduced through the first plate with the concave design, so that the energy storage box can be installed closer to an installation surface, and the overall occupied area is saved; and the pressure relief space added in the box body improves the installation flexibility, and the use requirement in a compact space is met.

Description

Energy storage boxes and energy storage systems Technical Field

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

[0002] When designing energy storage battery boxes, key technical challenges include ensuring the proper functioning of the explosion relief panels and user safety, while minimizing the footprint. Explosion relief panels need to open smoothly in the event of an explosion and cannot be obstructed by obstacles; therefore, they are typically required to be located at a certain distance from surrounding structures. However, battery boxes are often installed close to walls, which can potentially affect the functionality of the explosion relief panels. Summary of the Invention

[0003] The purpose of this utility model is to disclose an energy storage box that ensures the pressure relief plate can still release pressure normally when installed close to a wall, thus protecting user safety, while minimizing the floor space occupied. Another purpose 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 box, comprising:

[0005] A housing having an opening, the housing comprising a first plate and a second plate disposed opposite to each other, the opening being formed on the first plate, the first plate having a first surface facing away from the second plate;

[0006] A cover assembly is provided to cover the opening, the cover assembly having a second surface facing away from the second plate, the second surface being recessed relative to the first surface toward the side closer to the second plate.

[0007] In some embodiments, the housing further includes a first flange, which is circumferentially disposed around the opening and connected to the first plate, and the cover assembly is connected to the first flange.

[0008] In some embodiments, the cover plate assembly includes:

[0009] A weak portion is provided at the opening, and the side of the weak portion facing away from the opening is the second surface;

[0010] A fixing part is provided around the opening in a circumferential direction and presses the weak part onto the first flange. The fixing part is connected to the first flange.

[0011] In some embodiments, in a first direction, the thickness of the weak portion is less than the thickness of the fixing portion.

[0012] In some embodiments, in a first direction, the distance between the first surface and the second surface is a first distance a, which satisfies 3mm≤a≤50mm.

[0013] In some embodiments, the energy storage box further includes a battery module housed within the cavity of the energy storage box, the distance of the battery module in a first direction being a first dimension b, such that the first distance a is less than the first dimension b; the first plate and the second plate are disposed opposite to each other in the first direction.

[0014] In some embodiments, multiple battery modules are provided, and the multiple battery modules are spaced apart along a second direction, with the exhaust ports of the multiple battery modules all communicating with the opening; the second direction intersects the first direction.

[0015] In some embodiments, the housing further includes a connector connected to the first plate, the connector being disposed on the side of the first plate facing away from the second plate.

[0016] In some embodiments, the weak part is made of metal.

[0017] Secondly, embodiments of this application also provide an energy storage system, the energy storage system including any of the above-mentioned energy storage boxes.

[0018] Several embodiments of this application have one of the following beneficial effects:

[0019] An energy storage box is provided, comprising a box body and a cover assembly. The box body has an opening and includes a first plate and a second plate disposed opposite to each other. The opening is formed on the first plate, which has a first surface facing away from the second plate. The cover assembly seals the opening and has a second surface facing away from the second plate, which is recessed relative to the first surface towards the side closest to the second plate. In other words, the recessed design of the first plate reduces reliance on external space, allowing the energy storage box to be installed closer to the mounting surface, saving overall floor space. The increased pressure relief space inside the box body improves installation flexibility and adapts to the needs of use in compact spaces. Attached Figure Description

[0020] 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.

[0021] Figure 1 is a schematic diagram of the overall structure of the energy storage box provided in an embodiment of this application;

[0022] Figure 2 is an exploded structural diagram of the energy storage box provided in the embodiment of this application;

[0023] Figure 3 is a front view of the energy storage box provided in an embodiment of this application;

[0024] Figure 4 is a magnified view of the details at point A in Figure 2 provided in an embodiment of this application;

[0025] Figure 5 is an exploded structural diagram of the cover plate assembly provided in an embodiment of this application;

[0026] Figure 6 is a cross-sectional view of DD in Figure 3 provided in an embodiment of this application;

[0027] Figure 7 is a schematic cross-sectional view of the cover plate assembly provided in an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] X - First direction; Y - Second direction;

[0030] 100 - Housing; 110 - Opening; 120 - First plate; 130 - Second plate; 140 - First surface; 150 - First flange; 160 - Exhaust port;

[0031] 200 - Cover plate assembly; 210 - Second surface; 220 - Weak part; 230 - Fixing part;

[0032] 300-Battery Module;

[0033] 400-Connector;

[0034] 500 - Mounting surface. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] It should also be noted that in the accompanying drawings of this application, arrows labeled X indicate the first direction X, and arrows labeled Y indicate the second direction Y. The introduction of the first direction X and the second direction Y is to facilitate the description of the structural positional relationship of the energy storage tank, thereby aiding in understanding its structure. In the embodiments of this application, the first direction X is the width direction of the energy storage tank, which is also the direction of the depressurized gas ejection; the second direction Y is the height direction of the energy storage tank; and the first direction X and the second direction Y intersect each other. Furthermore, the first direction X and the second direction Y are perpendicular to each other or form a certain angle.

[0039] Currently, one of the main technical challenges engineers face when designing energy storage battery boxes is how to minimize the equipment's footprint while ensuring the proper functioning of the explosion relief panel and user safety. The design of the explosion relief panel is crucial because it needs to open rapidly in the event of excessive pressure or an explosion inside the battery box to release pressure and prevent further damage or danger. However, to ensure that the explosion relief panel can open smoothly without being obstructed by any obstacles, it is usually required to maintain a certain distance from the surrounding environment.

[0040] This design requirement presents challenges in practical applications, especially where the battery compartment is typically installed close to a wall or other fixed structure. A wall-mounted location can limit the movement of the explosion vent plate, thus affecting its effectiveness. Furthermore, limited space in home environments, coupled with users' desire for minimal footprint, further complicates the design.

[0041] Therefore, when designing energy storage battery boxes, a balance needs to be struck between safety and space utilization to ensure that the explosion relief panels can function properly in an emergency, without compromising the overall compactness and aesthetics of the battery box.

[0042] In view of this, embodiments of this application provide an energy storage box that ensures the explosion relief plate operates effectively within a limited space while minimizing the footprint of the energy storage box, thereby solving at least part of the above-mentioned technical problems.

[0043] Please refer to Figures 1, 2, and 3. Figure 1 is a schematic diagram of the overall structure of the energy storage box provided in this embodiment, Figure 2 is an exploded view of the energy storage box provided in this embodiment, and Figure 3 is a front view of the energy storage box provided in this embodiment. This embodiment provides an energy storage box, which includes a box body 100 and a cover assembly 200. The box body 100 has an opening 110 and includes a first plate 120 and a second plate 130 disposed opposite to each other. The opening 110 is formed on the first plate 120, and the first plate 120 has a first surface 140 facing away from the second plate 130. The cover assembly 200 covers the opening 110 and has a second surface 210 facing away from the second plate 130. The second surface 210 is recessed relative to the first surface 140 towards the side closer to the second plate 130.

[0044] It should be noted that the enclosure 100 is composed of six panels, including a front panel, a rear panel, a left side panel, a right side panel, a top panel, and a bottom panel. The front panel is typically the front of the enclosure 100 (the front panel being the second panel 130 mentioned above), and may be designed to be detachable or openable for easy maintenance and operation. The rear panel is located at the back of the enclosure 100 (the rear panel being the first panel 120 mentioned above, which is mounted against a mounting surface 500, which can be a wall). The rear panel may have ventilation holes or other openings for heat dissipation and ventilation. The left and right side panels form the sides of the enclosure 100, providing structural support and may have handles or other features for easy handling. The top panel is located at the top of the enclosure 100. The top panel is detachable for the installation and maintenance of internal components and may contain ventilation holes or other openings for heat dissipation and ventilation. The bottom panel is located at the bottom of the enclosure 100 and typically supports the entire structure.

[0045] The enclosure 100 serves to provide physical support and protection for the internal energy storage components, preventing damage from the external environment. Through the design of the opening 110 and cover assembly 200, the enclosure 100 can release pressure in case of excessive internal pressure, ensuring system safety. Space utilization is also considered, minimizing the footprint and achieving a balance between function and space through a compact design. High-strength, corrosion-resistant materials are typically used to ensure durability and safety. Furthermore, the enclosure 100 may integrate thermal management functions to aid heat dissipation and maintain stable internal temperature. Through these designs and functions, the enclosure 100 not only provides the necessary support and protection for the energy storage system but also optimizes safety and space utilization. These panels are secured together by welding, bolting, or other connection methods to form a robust, integrated structure. The material selection for the panels is typically based on requirements for strength, durability, and protection level to ensure the reliability and safety of the enclosure 100 under various environmental conditions.

[0046] Understandably, the opening 110 serves as a pressure relief vent, and the cover assembly 200 is the pressure relief plate. The pressure relief vent is used to safely release pressure when internal pressure is excessive. It provides a predetermined, controllable path for excessive pressure or gas to be released without damaging the structure of the housing 100, thereby protecting internal components and the surrounding environment. The size of the pressure relief vent is precisely calculated to ensure effective release when pressure reaches a certain level. The materials and structural design of the pressure relief vent can withstand the environment under normal operating conditions, but can open rapidly under overpressure. The cover assembly 200 is used to seal the opening 110 and is forced open to effectively release pressure when internal pressure is excessive.

[0047] Understandably, the cover assembly 200 seals the opening 110 of the first plate 120, and the cover assembly 200 has a second surface 210 facing away from the second plate 130. This second surface 210 is recessed relative to the first surface 140 towards the side closer to the second plate 130. This recessed structure forms a pressure relief space between the cover assembly 200 and the second plate 130. This pressure relief space is normally closed, but can be used as a pressure relief channel when the internal pressure is too high. In this way, the dependence on external space is reduced, allowing the energy storage box to be installed closer to the mounting surface 500, thereby saving overall floor space. This design, which adds partial pressure relief space internally, not only improves installation flexibility but also ensures safety and functionality in a compact space. By optimizing the internal structure of the energy storage box, more efficient space utilization can be achieved without sacrificing safety.

[0048] In view of this, the energy storage box in this embodiment includes a box body 100 and a cover assembly 200. A first plate 120 has an opening 110, which serves as a pressure relief vent for safely releasing pressure when the internal pressure is too high. The cover assembly 200 covers the opening 110. The first plate 120 is designed with a recessed structure, forming a pressure relief space. This design allows the energy storage box to be installed closer to the mounting surface 500, saving floor space. Specifically, the design of the opening 110 enables safe pressure release when the internal pressure is too high, protecting internal components and the surrounding environment. The recessed design of the first plate 120 reduces reliance on external space, allowing the energy storage box to be installed closer to the mounting surface 500, saving overall floor space. The increased internal pressure relief space improves installation flexibility and adapts to the needs of use in compact spaces. Through a compact design and the use of high-strength materials, the durability and safety of the box body 100 are ensured, while achieving a balance between function and space.

[0049] In some embodiments, please refer to FIG4, which is an enlarged view of the details at point A in FIG2 provided in an embodiment of this application. The housing 100 also includes a first flange 150, which is circumferentially disposed around the opening 110 and connected to the first plate 120. The cover assembly 200 is connected to the first flange 150. It is understood that the first flange 150 provides an installation position for fixing the cover assembly 200. This design ensures that the cover assembly 200 can be securely installed on the housing 100, enhancing the stability and sealing of the overall structure.

[0050] It should be noted that the first flange 150 is annularly positioned over the opening 110 and connected to the first plate 120. This embodiment enhances structural stability by adding the first flange 150 to the housing 100. The first flange 150 is circumferentially arranged around the opening 110 and connected to the first plate 120. The cover assembly 200 is connected to the first flange 150. This design not only improves the fixation and sealing of the cover assembly 200 but also enhances the overall structural strength and durability. In this way, the energy storage tank can more effectively maintain structural integrity when subjected to internal pressure changes, while ensuring the reliability of the pressure relief function.

[0051] In some embodiments, please refer to FIG5, which is an exploded structural view of the cover assembly provided in this application embodiment. The cover assembly 200 includes a weak portion 220 and a fixing portion 230. The weak portion 220 covers the opening 110, and a second surface 210 is disposed on the side of the weak portion 220 opposite to the opening 110. The fixing portion 230 is circumferentially disposed around the opening 110 and presses the weak portion 220 onto the first flange 150. The fixing portion 230 is connected to the first flange 150. It should be noted that the weak portion 220, as a key structure in the cover assembly 200 that directly responds to changes in internal pressure, is designed to withstand pressure impacts first when the internal pressure of the housing 100 is too high. Since the weak portion 220 is relatively weaker in strength than the fixing portion 230 and other structures, when the pressure reaches a predetermined threshold, the weak portion 220 will preferentially rupture, thereby releasing the excessive pressure inside the housing 100 in a timely manner and avoiding more serious safety hazards caused by continuous pressure accumulation. The fixing part 230 is arranged circumferentially around the opening 110 to provide stable support and constraint for the weak part 220. By pressing the weak part 220 against the first flange 150, the fixing part 230 ensures that, under normal operating conditions, the weak part 220 is tightly fitted against the opening 110, maintaining good sealing and preventing external dust, moisture, and other impurities from entering the housing 100 and affecting the performance of the energy storage components. Simultaneously, when the internal pressure increases and the weak part 220 begins to depressurize, the fixing part 230 stably connects to the side of the first flange 150 facing away from the second plate 130, ensuring that during the rupture of the weak part 220, the entire cover assembly 200 will not shift or detach due to pressure impact, thus maintaining the orderly progress of the depressurization process and ensuring the safety performance of the energy storage tank.

[0052] It should be noted that the weak point 220, as a key component of the cover assembly 200 directly responding to changes in internal pressure, can be made of metal. Specifically, a metal film can be used to construct the weak point 220. The metal film is typically made of a metal material with specific toughness and good ductility, such as stainless steel film or aluminum alloy film. When the internal pressure of the housing 100 is too high, the weak point 220 made of metal film can withstand the pressure impact first. Because the weak point 220 is extremely thin, it is significantly weaker in strength compared to the fixed part 230 and other structures. When the pressure reaches a predetermined threshold, the metal film will rupture first, thereby releasing the excessive pressure inside the housing 100 in a timely manner and avoiding more serious safety hazards caused by continuous pressure accumulation. Furthermore, the rupture pattern of the metal film under pressure is highly controllable. Taking stainless steel film as an example, when subjected to pressure, it will precisely crack along a preset stress concentration area, forming regular and suitable openings to ensure stable and efficient pressure discharge. Meanwhile, the metal film has a relatively low cost, which can effectively control the manufacturing cost of the energy storage box while ensuring performance. In addition, the metal material itself has good corrosion resistance, and even in complex operating environments, the weak part 220 made of metal film can maintain stable performance for a long time, ensuring that it can reliably perform pressure relief tasks at critical moments.

[0053] It should be noted that the weak part 220 and the fixed part 230 are connected by an adhesive, typically using a high-performance adhesive that is resistant to high temperatures and pressures and possesses good flexibility. This adhesive method ensures that under normal operating conditions, the weak part 220 and the fixed part 230 are tightly fitted together, maintaining the integrity and sealing of the structure. The flexibility of the adhesive can adapt to minor deformations of the components caused by temperature changes, pressure fluctuations, and other factors under different operating conditions, ensuring the reliability of the connection. Simultaneously, when the internal pressure increases and the weak part 220 begins to depressurize, the adhesive will not hinder the rupture or opening of the weak part 220, and can buffer pressure impacts to a certain extent, preventing the fixed part 230 from detaching from the first flange 150 due to excessive instantaneous impact force. This adhesive method greatly improves the stability of the coordinated operation of the weak part 220 and the fixed part 230, thereby ensuring that the entire cover assembly 200 can reliably perform its functions under different operating conditions and maintain the safety performance of the energy storage tank.

[0054] In other words, this embodiment ensures the secure installation of the cover assembly 200 while allowing the weak point 220 to effectively perform its function when needed, thereby improving the safety and reliability of the system under pressure variation conditions. Specifically, the fixing part 230, through its connection with the first flange 150, ensures that the cover assembly 200 is securely installed on the housing 100. The first flange 150 provides a defined installation position for the fixing part 230, thereby enhancing the stability and sealing of the cover assembly 200. This design helps maintain the reliability and safety of the cover assembly 200 under pressure variation conditions.

[0055] In some embodiments, please refer to Figures 6 and 7. Figure 6 is a cross-sectional structural view of DD in Figure 3 provided in an embodiment of this application, and Figure 7 is a schematic cross-sectional structural view of the cover assembly provided in an embodiment of this application. In the first direction X, the thickness of the weak portion 220 is less than the thickness of the fixing portion 230. It should be noted that, firstly, the thinner weak portion 220 can more easily deform or rupture under certain conditions (such as excessive internal pressure), thereby playing a role in safe pressure relief. This design can effectively protect the safety of equipment and personnel, preventing damage or accidents caused by excessive pressure. Secondly, the smaller thickness of the weak portion 220 makes it easier to process and shape when needed, which can simplify the manufacturing process and reduce production costs. In addition, the thinner weak portion 220 is more economical in terms of material use, helping to reduce resource waste. At the same time, the larger thickness of the fixing portion 230 provides the necessary structural strength and stability, ensuring the reliability and durability of the entire cover assembly 200 under normal operating conditions. Through this thickness difference design, it is possible to achieve flexibility in specific functions while maintaining the overall structural stability.

[0056] In some embodiments, as shown in FIG6, the distance between the first surface 140 and the second surface 210 in the first direction X is a first distance a, which satisfies 3mm ≤ a ≤ 50mm. That is, the first distance a can be any value or a range between any two values ​​from 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm, 36mm, 37mm, 38mm, 39mm, 40mm, 41mm, 42mm, 43mm, 44mm, 45mm, 46mm, 47mm, 48mm, 49mm, and 50mm.

[0057] It should be noted that the derivation of the minimum distance for effective pressure relief (lower limit 3mm) and the opening stroke requirements of the explosion relief plate are as follows: the weak part 220 of the cover assembly 200 (such as a metal film) needs to undergo plastic deformation or fracture to open under explosion pressure, and its minimum opening displacement needs to meet the initial opening conditions of the pressure relief channel. Through material mechanics calculations, when the thickness of the weak part is 0.3-1mm, the linear displacement corresponding to the initial opening angle after fracture needs to be ≥3mm to ensure rapid expansion of the gas flow cross-sectional area. Obstacle avoidance critical value: if a < 3mm, the wall or mounting surface 500 may directly block the opening path of the weak part 220, leading to pressure relief failure. Through high-speed photography experiments, it is verified that when a = 3mm, the initial angle of the weak part flipping towards the inside of the box (away from the wall) after fracture can reach 15°, avoiding contact with the wall.

[0058] The derivation of the maximum distance for space utilization (upper limit 50mm), and scene installation limitations: the distance between the battery box and the wall usually needs to be ≤50mm to meet the requirements of decoration and aesthetics (such as not protruding too much from the wall). Actual tests show that when a=50mm, the overall thickness of the battery box increases by about 50mm, but it can still fit the mainstream wall installation space (such as when the standard wall thickness is 200mm, the protrusion ratio is ≤25%).

[0059] It should be noted that the first distance 'a' ensures that the second surface 210 of the cover assembly 200 has a recess relative to the first surface 140 of the first plate 120, thus forming a pressure relief space. This space can be used as a pressure relief channel when the internal pressure is too high, ensuring system safety. By controlling the first distance 'a', the energy storage box can be installed closer to the mounting surface 500, reducing the footprint. This compact structural design helps achieve efficient space utilization within a limited space, making it suitable for applications requiring space saving. Furthermore, a reasonable first distance 'a' provides flexibility for installation and maintenance. The first distance 'a' allows necessary component installation and maintenance operations to be performed without affecting the pressure relief function. The design of the first distance 'a' also aids in thermal management. By leaving space between the first surface 140 and the second surface 210, airflow can be promoted, thereby helping to dissipate heat and maintain stable internal temperature. Ensuring that the first distance 'a' is within a reasonable range provides sufficient buffer space during pressure changes, preventing structural damage or personal injury.

[0060] In some embodiments, as shown in Figures 1, 2, and 6, the energy storage box further includes a battery module 300, which is housed within the inner cavity of the energy storage box. The distance between the battery module 300 and the first dimension b in the first direction X is such that the first distance a is less than the first dimension b. The first plate 120 and the second plate 130 are arranged opposite to each other in the first direction X. It should be noted that the first distance a being less than the first dimension b ensures that the existence of the pressure relief space does not affect the installation dimensions of the battery module 300. Specifically, this embodiment allows for an effective pressure relief space in the energy storage box to provide a safe pressure release path when the internal pressure is too high. Simultaneously, since the first distance a is less than the first dimension b of the battery module 300, the installation and operation space of the battery module 300 is not limited by the pressure relief space. This design not only improves the safety of the energy storage box but also ensures the installation dimensions and operational flexibility of the battery module 300, thereby achieving dual protection of functionality and safety.

[0061] In some embodiments, as shown in Figures 1, 2, and 6, multiple battery modules 300 are arranged at intervals along a second direction Y. The exhaust ports 160 of each battery module 300 are all connected to the opening 110. The second direction Y intersects the first direction X, typically perpendicularly or at a certain angle. It should be noted that this embodiment effectively vents gas, as the exhaust port 160 of each battery module 300 is connected to the opening 110, ensuring that gas generated inside the battery module 300 can be quickly discharged, preventing pressure buildup and improving system safety. In terms of space optimization, the battery modules 300 are arranged at intervals along the second direction Y, effectively utilizing the internal space of the energy storage box while ensuring that each battery module 300 has sufficient ventilation and heat dissipation space. Furthermore, since the second direction Y intersects the first direction X, this layout provides greater flexibility, allowing the arrangement of the battery modules 300 to be adjusted according to specific application requirements. Through this design, the energy storage box can not only accommodate multiple battery modules 300 but also ensure the safe operation and effective heat dissipation of each battery module 300.

[0062] In some embodiments, as shown in Figures 1 and 3, the housing 100 further includes a connector 400 connected to the first plate 120. The connector 400 is disposed on the side of the first plate 120 facing away from the second plate 130 and is mainly used to securely hang the energy storage box on the mounting surface 500. Specifically, firstly, by hanging the energy storage box on the wall, floor space can be effectively saved, making it particularly suitable for environments with limited space. Secondly, the design of the connector 400 allows the energy storage box to be easily installed on different types of mounting surfaces 500, increasing installation flexibility. Furthermore, the sturdy connector 400 ensures the safety of the energy storage box when wall-mounted, preventing accidental falls. Finally, the wall-mounted design allows the energy storage box to better integrate into the indoor environment, improving overall aesthetics. Through this design, the energy storage box is not only enhanced in function but also provides greater convenience and safety in installation and use.

[0063] Understandably, various structures can be used in the design of the energy storage box connector 400 to meet different installation needs and environmental conditions. The hook-type connector 400 is a simple and easy-to-use structure, typically including one or more hooks, which can be directly hung on a wall-mounted bracket or track. The slide rail connector 400 uses a slide rail system to allow the energy storage box to be easily moved and repositioned on the wall, suitable for applications requiring frequent adjustments. The bolt-fixed connector 400 uses bolts and nuts to firmly fix the energy storage box to the wall, providing extremely high stability and safety, suitable for heavy-duty energy storage boxes. The magnetic connector 400 uses a strong magnet to attract the energy storage box to a metal wall surface, making installation and disassembly very convenient, but it is necessary to ensure that the wall material is suitable for magnetic attraction. The snap-on connector 400 uses a snap-on mechanism to fix the energy storage box to the wall, offering quick installation and suitable for lightweight energy storage boxes. The bracket-type connector 400 uses a specially designed bracket to lift and fix the energy storage box to the wall; the bracket can be fixed or adjustable to accommodate different heights and angles. Choosing the right connector 400 structure requires considering factors such as the weight of the energy storage box, the material of the mounting surface 500, the installation environment, and the frequency of use to ensure safety and practicality.

[0064] Accordingly, this application provides an energy storage system comprising at least two energy storage boxes according to any of the above embodiments, wherein the first surface 140 of the energy storage box is disposed facing the mounting surface 500. This energy storage system may possess all the technical features and effects of the aforementioned energy storage boxes, which will not be elaborated further here.

[0065] 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.

[0066] The energy storage box 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 box, characterized in that, include: A housing (100) having an opening (110) includes a first plate (120) and a second plate (130) disposed opposite to each other. The opening (110) is formed on the first plate (120), and the first plate (120) has a first surface (140) facing away from the second plate (130). A cover assembly (200) is provided to cover the opening (110), and the cover assembly (200) has a second surface (210) facing away from the second plate (130), and the second surface (210) is recessed relative to the first surface (140) toward the side closer to the second plate (130).

2. The energy storage box according to claim 1, characterized in that, The housing (100) further includes a first flange (150), which is circumferentially arranged around the opening (110) and connected to the first plate (120), and the cover assembly (200) is connected to the first flange (150).

3. The energy storage box according to claim 2, characterized in that, The cover plate assembly (200) includes: a weak portion (220) covering the opening (110), and a second surface (210) disposed on the side of the weak portion (220) away from the opening (110); a fixing portion (230) circumferentially disposed around the opening (110) and pressing the weak portion (220) onto the first flange (150), wherein the fixing portion (230) is connected to the first flange (150).

4. The energy storage box according to claim 3, characterized in that, In the first direction (X), the thickness of the weak portion (220) is less than the thickness of the fixed portion (230).

5. The energy storage box according to claim 1, characterized in that, In the first direction (X), the distance between the first surface (140) and the second surface (210) is a first distance a, which satisfies 3mm≤a≤50mm.

6. The energy storage box according to claim 5, characterized in that, The energy storage box also includes a battery module (300), which is housed in the inner cavity of the energy storage box. The battery module (300) has a first dimension b in the first direction (X), satisfying that the first distance a is less than the first dimension b. The first plate (120) and the second plate (130) are arranged opposite to each other in the first direction (X).

7. The energy storage box according to claim 1, characterized in that, It also includes a plurality of battery modules (300), which are spaced apart along a second direction (Y) in the inner cavity of the energy storage box, and the exhaust ports (160) of the plurality of battery modules (300) are all connected to the opening (110); the second direction (Y) intersects the first direction (X).

8. The energy storage box according to claim 1, characterized in that, The housing (100) also includes a connector (400) connected to the first plate (120), the connector (400) being disposed on the side of the first plate (120) facing away from the second plate (130).

9. The energy storage box according to claim 3, characterized in that, The weak part (220) is made of metal.

10. An energy storage system, characterized in that, include: Mounting surface (500); at least two energy storage boxes as described in any one of claims 1 to 9, wherein a first surface (140) of the energy storage box is disposed facing the mounting surface (500).

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