Frame, frame manufacturing method, connector assembly, energy storage device, energy storage system and charging network

Abstract

Provided in the present application are a frame, a frame manufacturing method, a connector assembly, an energy storage device, an energy storage system, and a charging network. The frame is formed by a plurality of beam assemblies which are connected to one another, wherein some of the beam assemblies are first beam assemblies, and each of the first beam assemblies comprises a first beam and first connectors. When the frame is manufactured, the first connectors are firstly connected to the first beams to form the first beam assemblies, and then the first connectors of the plurality of first beam assemblies are connected to one another. The frame is formed by the plurality of beam assemblies, including the first beam assemblies, which are connected to one another. When the frame needs to be moved or transported, the beam assemblies can be transported separately, thereby reducing the difficulty of transportation. The first beams and the corresponding first connectors are connected in the same manner, such that the same auxiliary fixture can be used during manufacturing to implement connection, thereby simplifying the manufacturing process. In addition, the first beam assemblies are each an integral part, and surface treatment can be separately performed on the first beam assemblies before the first beam assemblies are assembled into a frame, thereby reducing the difficulty of treatment, and improving the uniformity and consistency of the surface treatment.

Description

Frame, frame manufacturing method, connector assembly, energy storage device, energy storage system and charging network Technical Field

[0001] This application belongs to the field of energy storage technology, and more specifically, relates to a frame, a frame manufacturing method, a connector assembly, an energy storage device, an energy storage system, and a charging network. Background Technology

[0002] An energy storage device is used to store and transfer electrical energy. The energy storage device includes a housing and at least one battery cluster disposed inside the housing. The battery cluster is used for storing and transferring electrical energy, and the housing is used to protect the battery cluster inside.

[0003] In related technologies, the enclosure of an energy storage device typically includes a frame. The frame serves as the main supporting structure of the enclosure, providing the basic shape and outline of the enclosure. The forming and transportation of the frame are important factors affecting the forming and transportation of the energy storage device enclosure. How to improve the forming efficiency of the frame and reduce the transportation difficulty is one of the issues that need to be addressed when energy storage devices are actually installed and used.

[0004] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Summary of the Invention

[0005] The purpose of this application is to provide a frame, a frame manufacturing method, a connector assembly, an energy storage device, an energy storage system, and a charging network to improve the problems of low frame forming efficiency and high transportation difficulty of the energy storage device housing in related technologies.

[0006] In a first aspect, embodiments of this application provide a frame including multiple beam components interconnected to form the frame, wherein at least some of the beam components are a first beam component, the first beam component comprising:

[0007] The first beam has two connecting ends that are arranged opposite to each other;

[0008] The first joint has a first connecting part and a second connecting part. The first connecting part is used to connect with the connecting end of the first beam, and the second connecting part is used to connect the two first joints to each other.

[0009] In this configuration, at least one connecting end of the first beam is connected to a first joint via a first connecting part, and adjacent first beam assemblies are connected via corresponding second connecting parts.

[0010] The frame of this application embodiment is formed by connecting multiple beam components together. Some of the beam components are first beam components. The first beam component includes a first beam and a first joint. The first joint is connected to the connecting end of the first beam through its first connecting part. Two first joints are connected through their second connecting parts to connect two first beams. When making the frame, the first beam and the first joint are first connected to form the first beam component, and then the multiple first beam components are connected to each other. Thus, the frame is formed by the interconnection of multiple beam components, including the first beam assembly. When the frame needs to be moved or transported, the individual beam components can be transported separately. Compared to transporting a welded whole frame, the transportation difficulty is reduced, and the risk of damage to the frame structure during transportation is reduced. In addition, each first beam and its corresponding first joint are connected in the same way. During production, the same auxiliary tooling can be used to achieve the connection, thereby simplifying the production process and reducing the types of production equipment. Furthermore, the first beam and the first joint are connected to form the first beam assembly before assembly. As a whole component, the first beam assembly can undergo various necessary treatments before being assembled into the frame, such as anti-corrosion or insulation surface treatments (e.g., electroplating, spraying, etc.). Compared to a pre-formed frame, the volume of a single first beam assembly is greatly reduced. The individual first beam assemblies are processed separately, reducing the processing difficulty and effectively improving the uniformity and consistency of surface treatment. This effectively reduces the risk of reduced support strength due to inadequate local processing, and improves the stability and reliability of the frame.

[0011] In some embodiments, in a first beam assembly, the outer surface of the first beam and the outer surface of the corresponding first joint are continuous surfaces.

[0012] By adopting the technical solution of this embodiment, the first connecting part of the first beam and the first joint is seamlessly and smoothly connected at the connection position, so that the outer surface of the first beam and the outer surface of the first joint form a seamless and smooth transition surface after connection, and the outer surface of the first beam and the outer surface of the first joint are in a basically continuous extension state. In this way, there is no connection gap between the outer surface of the first joint and the outer surface of the first beam, the overall structure of the first beam assembly is more beautiful and neat, and there is no stress change at the connection position, so the force can be transmitted more evenly and smoothly between the first beam and the first joint, thereby enhancing the overall mechanical performance of the first beam assembly. In addition, when the first beam assembly needs to undergo surface treatment such as anti-corrosion, insulation or coloring (such as electroplating, spraying, etc.), the continuous surface design can also improve the continuity, uniformity and consistency of the surface treatment, thereby improving the surface protection effect and decorative effect of the first beam assembly.

[0013] In some embodiments, the outer surfaces of the two interconnected first joints are continuous surfaces.

[0014] By adopting the technical solution of this embodiment, after the two first joints are connected through their respective second connecting parts, the outer surfaces of the two first joints also form a continuous surface. The two interconnected second connecting parts are seamlessly and smoothly connected at the connection position, so that the outer surfaces of the two interconnected first joints form a seamless and smooth transition surface after connection. Thus, there are no connection gaps between the outer surfaces of the two interconnected first joints, and similarly, there are no connection gaps between the two first beam assemblies connected by the two first joints. This helps to improve the overall stress uniformity of the frame, improve the uniformity and consistency of surface treatment, and improve the aesthetics and neatness of the outer surface.

[0015] In some embodiments, in a first beam assembly, a first joint is sealed to a corresponding first beam.

[0016] By adopting the technical solution of this embodiment, the first joint and the first beam are sealed together, and there is no gap between them at the connection position. This prevents external solid particles, liquids or gases from entering the interior of the first beam or the first joint through the connection position. In addition, when the frame is used to make structures such as boxes with high requirements for sealing performance, it can effectively prevent the exchange of substances between the inner and outer spaces of the box or other structures through the connection position between the first joint and the first beam, thereby effectively maintaining the internal environment.

[0017] In some embodiments, the two first joints connected to each other are sealed together.

[0018] By adopting the technical solution of this embodiment, the two first joints are sealed together, and the reliable sealing of the connection position can be guaranteed. Substances in the environment cannot enter the first joint through the connection position, and the internal and external spaces of the box and other structures cannot exchange substances through the connection position, which helps to improve the stability of the internal space of the box and other structures.

[0019] In some embodiments, the first connector has a connector connection end, the end face shape of which is adapted to the cross-sectional shape of the first beam, and the first connection portion includes a plug protruding from the end face of the connector connection end, the plug being adapted to be inserted into the first beam.

[0020] By adopting the technical solution of this embodiment, the shape and size of the connector end of the first connector are adapted to the cross-sectional shape and size of the first beam. After the first connector is inserted into the first beam, the end face of the connector end can fit and abut against the end face of the first beam, so that the connection between the first beam and the first connector can achieve reliable connection and sealing.

[0021] In some embodiments, the joint connection end is welded to the first beam.

[0022] By adopting the technical solution of this embodiment, the connector end of the first connector and the first beam are connected by welding. After the plug is inserted into the first beam, the interface position is welded, so that the first connector and the first beam achieve a stable and reliable sealed connection.

[0023] In some embodiments, the second connection portion includes a first sub-portion and a second sub-portion, and in two interconnected first beam assemblies, the first sub-portion of one first connector is connected to the second sub-portion of the other first connector.

[0024] By adopting the technical solution of this embodiment, the second connecting part serves as the connecting part for connecting the two first joints. It includes a first sub-part and a second sub-part. When the two first joints are connected, the first sub-part of one of the first joints can be arbitrarily connected to the second sub-part of the other first joint. The two first joints that are connected to each other can have the same structure and size. Any two first joints can be connected without providing male and female parts for structural adaptation connection. This allows the first joint to serve as a standard joint for the mutual connection between any two first beams. The first joint has good versatility and practicality.

[0025] In some embodiments, a recessed platform is provided on the outer surface of the first sub-part, and in two interconnected first beam assemblies, at least a portion of the second sub-part of a first connector is embedded in the recessed platform of the other first connector, so that the outer surfaces of the interconnected first sub-part and the outer surfaces of the second sub-part are flush.

[0026] By adopting the technical solution of this embodiment, on the same first connector, the first sub-part has a recessed platform whose size and shape are adapted to at least a portion of the shape and size of the second sub-part. After the two first connectors are connected, at least a portion of the second sub-part can be embedded into the recessed platform, so that the connection position can be structurally abutted by the second sub-part and the recessed platform. This gives the two first connectors a certain ability to resist external forces such as shear force at the connection position, reducing the probability of relative displacement between the two first connectors. In addition, the second sub-part is embedded into the recessed platform, and the outer surfaces of the interconnected first sub-parts and the second sub-parts are flush. The outer surfaces of the two interconnected parts are smoothly connected without gaps or misalignment. When other components need to be installed or surface treatments (such as painting or electroplating) are required, the flush outer surfaces can provide a better operating foundation and reduce the risk of installation difficulties or poor surface treatment results caused by uneven surfaces.

[0027] In some embodiments, the recessed platform is provided with a first connecting hole, and the second sub-part is provided with a second connecting hole. The first connecting hole and the second connecting hole are used to cooperate with the connector to connect the first sub-part and the second sub-part.

[0028] By adopting the technical solution of this embodiment, a first connecting hole and a second connecting hole are respectively provided in the sinking platform and the second sub-part. When the two first joints are connected, a connector adapted to the first connecting hole and the second connecting hole can be used for connection. The sinking platform and the second sub-part, i.e. the two first joints, are connected by the connector. The connection structure is simple and the operation is convenient.

[0029] In some embodiments, the second connecting portion further has a first wedge surface and a second wedge surface, and in the two interconnected first joints, the first wedge surface of one first joint abuts against the second wedge surface of the other first joint, so that the two adjacent first beam assemblies are connected at a first preset angle.

[0030] By adopting the technical solution of this embodiment, when the two first joints are connected, the first wedge surface of one first joint abuts against the second wedge surface of the other second joint. The friction and mutual support of the wedge surfaces can effectively resist external forces and reduce the risk of angular displacement between the connected first beam components. In addition, compared with the connection method of using a complex angle adjustment mechanism or a combination of multiple connectors, using the abutment of the wedge surfaces to achieve a specific angle connection only requires the two corresponding first and second wedge surfaces to be fitted together. The angle positioning structure is simple and the connection operation is convenient, thereby improving the assembly efficiency of the frame.

[0031] In some embodiments, the frame includes three first beam assemblies interconnected by first joints, wherein a first wedge face of one first joint abuts against a second wedge face of another first joint.

[0032] By adopting the technical solution of this embodiment, three first beam components are connected to each other in pairs through three first joints to form part of the frame. After the three first joints are connected, the sum of the first included angles of the three second connecting parts is exactly equal to 360°. In this way, a closed, mutually supporting wedge-shaped abutment structure can be formed between the three interconnected first joints, so that the three corresponding first beams are connected to form a stable overall structure. Force can be effectively transmitted and distributed between the three interconnected first beam components. The three first beam components can be spliced ​​to form three adjacent edges of the frame. Furthermore, by designing the angles of the first and second wedge surfaces, any two first beam components of the three interconnected first beam components have the same included angle, so as to meet the angle design requirements between adjacent beams in the frame.

[0033] In some embodiments, in a first connector, the plane containing the first wedge surface and the plane containing the second wedge surface have a first included angle of 120°.

[0034] By adopting the technical solution of this embodiment, the first included angle of the three first joints is 120°, and the structural design of the three first joints is basically the same. In this way, the three first beams with the same structure can be connected by the three first joints with the same structure. The three first beam components are basically the same in appearance and structural function. The three first beam components can be assembled in any order. The first beam components can be produced and assembled as a standard part, which helps to improve the overall forming efficiency of the frame.

[0035] In some embodiments, in a first joint, the first wedge surface and the second wedge surface intersect at a first side, and in three interconnected first joints, the corresponding three first sides are parallel and abut against each other.

[0036] By adopting the technical solution of this embodiment, after the three first beam components are connected to each other in pairs through the three first joints, the first edges of the connecting first wedge surfaces and second wedge surfaces of each second connection part are parallel to each other and abut against each other, which can limit the abutting first wedge surfaces and second wedge surfaces, reducing the risk of mutual sliding between them; in addition, the three first beam components can also achieve uniform force transmission through the first edges, thereby helping to improve the overall load-bearing capacity and deformation resistance of the frame.

[0037] In some embodiments, in a first connector, a first wedge surface intersects the outer surface of the first connector at a second side, a second wedge surface intersects the outer surface of the first connector at a third side, and in three interconnected first connectors, adjacent second sides and third sides are sealed together.

[0038] By adopting the technical solution of this embodiment, in each first joint, the first wedge surface intersects with the outer surface of the first joint at the second side, and the second wedge surface intersects with the outer surface of the first joint at the third side. When the three first joints are connected to each other, the adjacent second and third sides are sealed together, so that the outer surfaces of the two connected first joints are sealed together, so that water, vapor and the like cannot pass through the connection position between the first joints.

[0039] In some embodiments, the first wedge surface is provided with a groove and the second wedge surface is provided with a protrusion. The two ends of the groove pass through the first side and the second side respectively, and the two ends of the protrusion extend to the first side and the third side respectively. The groove and the protrusion are connected to the first side. Among the three interconnected first connectors, the protrusion of one first connector is sealed and engaged with the groove of another first connector.

[0040] By adopting the technical solution of this embodiment, a groove and a protrusion are provided between the abutting first and second wedge surfaces to adapt and engage. The convex-concave structure can increase the misalignment shear strength between the abutting first and second wedge surfaces, thereby improving the connection strength. On this basis, in a first joint, the two ends of the groove pass through the first side and the second side, and the two ends of the protrusion extend to the first side and the third side. When the three first joints are connected to each other, the interlocking groove and protrusion structure extends from one side of the outer surface of the first joint to the opposite side, and the two are sealed together, so that the two connected first joints achieve a sealed connection.

[0041] In some embodiments, the first joint further has a fourth side and a fifth side disposed opposite to each other, the fourth side being connected to the second side and the fifth side being connected to the third side; in a first beam assembly, the fourth side is flush with one side of the first beam and the fifth side is flush with the opposite side of the first beam; in two interconnected first joints, the adjacent fourth side and the fifth side are flush with each other.

[0042] By adopting the technical solution of this embodiment, after the two first beams are connected by two first joints, a flat, continuous and seamless connection is maintained between the first beam and the first joint, as well as between the first joints, so that the force can be evenly transmitted between the first joint and the first beam and between adjacent first joints, thereby helping to improve the strength and load-bearing capacity of the connection structure.

[0043] In some embodiments, the fourth and fifth sides are both concave arc sides, and the sum of the arc of the fourth side and the arc of the fifth side is equal to the first preset angle.

[0044] By adopting the technical solution of this embodiment, both the fourth and fifth sides are set as concave arc sides. When the two first beam components are connected, the fourth and fifth sides can also limit the connection angle between them. When the two first beam components are connected at a first preset angle, the adjacent fourth and fifth sides are flush and connected, so that the two connected first beam components have a first preset angle.

[0045] In some embodiments, the first preset angle is a right angle, and the arc of the fourth side and the arc of the fifth side are both 45°.

[0046] In some embodiments, the frame includes twelve first beam assemblies, each first beam assembly having a first joint connected to its opposite ends, and the twelve first beam assemblies being interconnected through the first joints to form the frame.

[0047] By adopting the technical solution of this embodiment, the entire frame is assembled using first beam components. The first beam components can be produced and transported independently. At the same time, the first beam components can be assembled as a standard part to form the frame. During assembly, the first joints of each first beam component are connected to each other. The connected beam components do not need to be matched or combined. The beam components have good versatility. In addition, for frames that require surface treatment, each first beam component can be independently surface treated before assembling the frame, thereby improving the uniformity and consistency of the surface treatment.

[0048] Secondly, embodiments of this application provide a connector assembly including a plurality of interconnectable first connectors. Each first connector has a first connecting portion and a second connecting portion. The first connecting portion is used to connect with the connecting end of a first beam, and the second connecting portion is used to connect two first connectors to each other. The second connecting portion includes a first sub-part and a second sub-part. The first sub-part of one first connector is connected to the second sub-part of another first connector to connect the two first connectors.

[0049] Thirdly, embodiments of this application also provide a framework fabrication method, including:

[0050] Using the multiple first beams and multiple first joints in the above embodiments, a first joint is connected to each of the opposite ends of each first beam to obtain multiple first beam assemblies;

[0051] The twelve first beam assemblies are connected to each other through the first joint to obtain the frame.

[0052] Fourthly, this application also provides an energy storage device, including a housing and one or more battery clusters disposed within the housing. The housing includes at least one frame provided in the above embodiments, and / or the housing includes at least one frame obtained using the frame manufacturing method provided in the above embodiments.

[0053] Fifthly, embodiments of this application also provide an energy storage system, including a power conversion device and an energy storage device as described in the above embodiments, wherein the power conversion device is electrically connected between the power generation device and the energy storage device.

[0054] Sixthly, embodiments of this application also provide a charging network, including a charging pile and an energy storage device or an energy storage system as described in the above embodiments, wherein the energy storage device is used to provide electrical energy to the charging pile.

[0055] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the 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.

[0057] Figure 1 is a schematic diagram of the structure of an energy storage device provided in some embodiments of this application;

[0058] Figure 2 is a schematic diagram of the framework provided in some embodiments of this application;

[0059] Figure 3 is an exploded view of the framework shown in Figure 2;

[0060] Figure 4 is a partial structural schematic diagram of the frame shown in Figure 2;

[0061] Figure 5 is an exploded view of the structure shown in Figure 4;

[0062] Figure 6 is a structural schematic diagram of the first beam assembly of the frame described in Figure 2;

[0063] Figure 7 is an exploded view of the first beam assembly shown in Figure 6;

[0064] Figure 8 is an exploded view of the first beam assembly in some other embodiments;

[0065] Figure 9 is a schematic diagram of the connector assembly provided in some embodiments of this application;

[0066] Figure 10 is a structural schematic diagram of the first connector of the connector assembly shown in Figure 9;

[0067] Figure 11 is another perspective view of the first connector shown in Figure 10;

[0068] Figure 12 is a flowchart of a framework fabrication method provided in some embodiments of this application;

[0069] Figure 13 is a flowchart of a framework fabrication method provided in some other embodiments of this application;

[0070] Figure 14 is a flowchart of a framework fabrication method provided in some embodiments of this application;

[0071] Figure 15 is a flowchart of a method for forming a cube-shaped frame according to some embodiments of this application;

[0072] Figure 16 is a schematic diagram of the structure of an energy storage system provided in some embodiments of this application;

[0073] Figure 17 is a schematic diagram of the structure of a charging network provided in some embodiments of this application.

[0074] The main labels in the attached figures are as follows: 10. Box body; 11. Frame; 12. Panel; 111. Beam assembly; 112. First beam assembly; 113. First beam; 114. First joint; 1141. First connecting part; 1142. Second connecting part; 11421. First sub-part; 11422. Second sub-part; 11423. Sloping platform; 11424. First connecting hole; 11425. Second connecting hole; 11426. First wedge surface; 11427. Second wedge surface; 1142a. First side; 1142b. Second side; 1142c. Third side; 1142d. Fourth side; 1142e. Fifth side; 11428. Groove; 11429. Protrusion; 1143. Joint connection end; 1144. Plug; 1002. Connector; 100. Energy storage device; 200. Battery device; 300. Charging network; 301. Charging pile; 302. Connector; 400. Energy storage system; 401. Power conversion device; 402. Power generation device. Detailed Implementation

[0075] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the application will be further described in detail below with reference to Figures 1 to 17 and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0076] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0077] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0078] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments in any suitable manner.

[0079] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0080] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0081] Unless otherwise specified, all steps of this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order; for example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0082] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0083] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces). "Several" means one or more, unless otherwise explicitly specified.

[0084] In the description of the embodiments of this application, 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", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0085] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0086] In the description of the embodiments of this application, unless otherwise expressly specified and limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it may be directly connected to or indirectly connected to the other element.

[0087] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "proximity" refers to being close in location. For example, among three components A1, A2, and B, if the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1; that is, A2 is adjacent to B, or B is adjacent to A2. Similarly, when there are multiple components C, namely C1, C2, ... CN, if one component C, such as C2, is closer to component B than the other components C, then B is adjacent to C2, or C2 is adjacent to B.

[0088] With the increasing severity of global energy shortages, pollution, and uneven power development, there is a growing need to efficiently utilize more new energy sources. To better store electricity and alleviate power shortages, energy storage devices have emerged. These devices can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, as a device for storing and transferring electrical energy, energy storage devices can store energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours.

[0089] Generally, an energy storage device includes a housing, which serves as the outer shell of the device and provides physical protection for the various modules and equipment inside. The housing of an energy storage device includes a frame, which serves as the main supporting structure of the housing and provides the basic shape and outline of the housing. Through reasonable design and connection methods, the frame structure connects the various parts of the housing (such as side panels, top panels, bottom panels, etc.) into a whole, thereby improving the overall stability of the housing.

[0090] In related technologies, frames are often manufactured as a whole in factories through welding. However, the whole frame is large in size and weight, making transportation inconvenient. In addition, for frames that require surface treatment such as anti-corrosion treatment or insulation treatment, the large size of the frame can lead to poor consistency in surface treatment, and problems such as inadequate or excessive treatment are likely to occur. Inadequate surface treatment, such as insufficient thickness of anti-corrosion layer, makes the frame prone to instability due to local corrosion, resulting in a decrease in the strength of the enclosure and a decrease in the reliability and stability of the energy storage device. On the other hand, excessive treatment, such as excessive thickness of anti-corrosion layer or insulation layer, will cause material waste.

[0091] Based on this, the present application provides a frame, which is formed by connecting multiple beam components together. Some of the beam components are first beam components. The first beam component includes a first beam and a first joint. The first joint is connected to the connecting end of the first beam through its first connecting part. Two first joints are connected through their second connecting parts to connect two first beams. When making the frame, the first beam and the first joint are first connected to form the first beam component, and then the multiple first beam components are connected to each other. Thus, the frame is formed by the interconnection of multiple beam components, including the first beam assembly. When the frame needs to be moved or transported, the individual beam components can be transported separately. Compared to transporting a welded whole frame, the transportation difficulty is reduced, and the risk of damage to the frame structure during transportation is reduced. In addition, each first beam and its corresponding first joint are connected in the same way. During production, the same auxiliary tooling can be used to achieve the connection, thereby simplifying the production process and reducing the types of production equipment. Furthermore, the first beam and the first joint are connected to form the first beam assembly before assembly. As a whole component, the first beam assembly can undergo various necessary treatments before being assembled into the frame, such as anti-corrosion or insulation surface treatments (e.g., electroplating, spraying, etc.). Compared to a formed frame, the volume of a single first beam assembly is greatly reduced. The individual first beam assemblies are treated separately, reducing the difficulty of treatment. The uniformity and consistency of surface treatments such as spraying can also be effectively improved, thereby effectively reducing the risk of reduced support strength due to inadequate local treatment and improving the stability and reliability of the frame.

[0092] Understandably, in the embodiments of this application, the frame can be used as a supporting skeleton to make a box, and the frame can also be used as a supporting structure to make various functional platforms, such as making a supporting platform for the placement, hanging and installation of various tools or structures, or the frame can also be used as a partition structure to divide space, etc.

[0093] The following example uses a frame as the skeleton for making the energy storage device's housing to illustrate the use of a frame.

[0094] Referring to Figure 1, the energy storage device 100 provided in this embodiment 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. The energy storage device 100 can store electrical energy as needed and output it at appropriate times. For example, the energy storage device 100 can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours.

[0095] In some embodiments, the energy storage device 100 may be an energy storage cabinet or an energy storage container.

[0096] In some embodiments, the energy storage device 100 may include a housing 10 and one or more battery clusters housed within the housing 10. The one or more battery clusters enhance the voltage and capacity of the energy storage device 100. Each battery cluster may include one or more battery devices 200. Multiple battery devices 200 are connected in series via a busbar to increase the voltage of the energy storage device 100. When the energy storage device 100 includes multiple battery clusters, these clusters are connected in parallel to increase the capacity of the energy storage device 100. Alternatively, the energy storage device 100 may also include one or more battery devices 200, which are directly housed within the housing 10.

[0097] In some embodiments, referring to FIG1, the battery device 200 may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or in a mixed configuration via a busbar.

[0098] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0099] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0100] In some embodiments, the battery device 200 may be a battery pack, which includes a housing 10 and one or more battery cell assemblies housed within the housing 10.

[0101] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 10 by fixing the battery module in the housing 10.

[0102] As an example, the battery cell assembly can also be housed in the housing 10 by directly fixing multiple battery cells to the housing 10.

[0103] In some embodiments, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0104] As an example, a single battery cell can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc.

[0105] In some embodiments, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries.

[0106] In some embodiments, the energy storage device 100 may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0107] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 200 via piping for regulating the temperature of the individual battery cells.

[0108] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0109] As an example, the central control module can serve as the battery management unit of the energy storage device 100, used to monitor and manage the energy storage device 100. The central control module can monitor information such as the current, voltage, power, state of charge, or temperature of the energy storage device 100. For example, it can control the charging and discharging current and voltage of the energy storage device 100. As an example, the central control module includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0110] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system 400.

[0111] As an example, the power distribution module can be used to distribute power to the modules in the energy storage device 100 that require electricity.

[0112] In some embodiments, as shown in FIG1, the housing 10 of the energy storage device 100 serves as the outer shell of the energy storage device 100, providing physical protection for various modules and equipment inside, such as battery clusters, thermal management modules, main control modules, central control modules, power distribution modules, and fire protection modules, thereby reducing the impact of external environmental factors such as wind, rain, dust, heat, and vibration on the internal structure of the housing 10. The structural design of the housing 10 meets certain strength and stability requirements to reduce the risk of deformation or damage during transportation, installation, and use.

[0113] In some embodiments, as shown in Figures 1 and 2, the housing 10 of the energy storage device 100 typically includes a frame 11. The frame 11 serves as the main support structure of the housing 10, providing stable support for the entire housing 10 and thus providing a basic shape profile. This ensures that the housing 10 maintains its predetermined geometry under various environmental conditions, reducing the risk of deformation such as twisting, bending, or collapse, and guaranteeing the normal use of the housing 10. The frame 11 is typically made of high-strength and rigid materials such as steel, capable of withstanding the weight of the internal equipment and various external mechanical stresses, such as impacts and vibrations. For example, the frame 11 of some energy storage containers is welded from high-strength channel steel, angle steel, and other steel materials. Furthermore, the frame structure, through its rational design and connection methods, integrates the various parts of the housing 10 into a unified whole, thereby improving the overall stability of the housing 10. For example, the housing 10 of the energy storage device 100 typically also includes a panel 12, which usually includes side panels on the sides of the housing 10, a top panel on the top surface of the housing 10, and a bottom panel on the bottom surface of the housing 10. The side panels, top panel, and bottom panel are connected to the frame 11 to form a whole, thus serving to enclose and protect the internal structure of the housing 10. Therefore, the frame 11, as an important component of the housing 10, plays a crucial role in maintaining the shape of the housing 10 and enhancing its overall stability.

[0114] The framework 11 of this application will be described in detail below with reference to Figures 2 to 11 and specific embodiments.

[0115] As shown in Figures 2 to 5, the frame 11 provided in this embodiment includes multiple beam assemblies 111, which are interconnected to form the frame 11. At least some of the beam assemblies 111 are first beam assemblies 112, each including a first beam 113 and a first joint 114. The first beam 113 has two oppositely arranged connecting ends. The first joint 114 has a first connecting portion 1141 and a second connecting portion 1142. The first connecting portion 1141 is used to connect with the connecting end of the first beam 113, and the second connecting portion 1142 is used for mutual connection between the two first joints 114. At least one connecting end of the first beam 113 is connected to a first joint 114 via a first connecting portion 1141, and adjacent first beam assemblies 112 are connected via corresponding second connecting portions 1142.

[0116] In this embodiment, the frame 11 includes multiple beam components 111, which are interconnected to form the frame 11. Each beam component 111 is a basic building block of the frame 11; that is, the frame 11 is not a monolithic structure but is assembled from multiple beam components 111. These beam components 111 are like small parts in building blocks, serving as the fundamental elements for constructing the entire frame 11. The multiple beam components 111 are interconnected to form the frame 11, for example, using methods such as screw connections, tenon joints, or welding. Each beam component 111 can be a structure composed of multiple materials or sub-components. For example, a beam component 111 may include the beam itself, as well as joints, reinforcing ribs, and filler for connection.

[0117] At least some beam components 111 of the frame 11 are first beam components 112. In some examples, a portion of the multiple beam components 111 that make up the frame 11 are first beam components 112, that is, multiple first beam components 112 are assembled together with one or more other beam components 111 to form the frame 11. The first beam components 112 and other beam components 111 may have different structural compositions, different material compositions or different functional characteristics. In other examples, all beam components 111 that make up the frame 11 are first beam components 112, and multiple first beam components 112 are interconnected to form the frame 11.

[0118] For example, as shown in Figures 2 and 3, multiple beam assemblies 111 are connected to form a cubic frame 11. Each beam assembly 111 may include vertical beam assemblies (also called column assemblies) and horizontal beam assemblies. The vertical beam assemblies are the main supporting components perpendicular to the mounting surface, such as the ground, in the frame structure. They bear the important task of transferring the weight of the housing 10 and its internal equipment to the ground, and also play a crucial role in resisting external vertical pressures (such as the weight of upper-level equipment, potential snow pressure, etc.). The horizontal beam assemblies are components that connect the vertical beam assemblies horizontally. The horizontal beam assemblies are used to connect with the multiple vertical beam assemblies to form a unified cubic frame 11. The horizontal beam assemblies enhance the horizontal stability of the cubic frame 11, enabling the frame 11 to maintain structural integrity when subjected to horizontal external forces (such as wind force, lateral impact forces during transport, etc.). In this cubic frame 11, some or all of the vertical beam assemblies may be first beam assemblies 112, and some or all of the horizontal beam assemblies may be first beam assemblies 112.

[0119] In the embodiments of this application, as shown in Figures 3 to 5, the first beam assembly 112 includes a first beam 113 and a first connector 114. That is, the first beam assembly 112 has at least two components: the first beam 113 and the first connector 114. The first beam 113 is a beam structure and is the main body of the first beam assembly 112. The first connector 114 is a connection structure for the first beam 113 to connect with other adjacent beams.

[0120] The first beam 113 has two oppositely arranged connecting ends. The first beam 113 can be a strip or rod structure with a certain extension length along a certain direction. The two opposite ends of the first beam 113 along its length direction form two connecting ends. The first joint 114 has a first connecting part 1141, which is the part of the first joint 114 used to connect with the connecting end of the first beam 113.

[0121] In some embodiments, one of the two connecting ends of the first beam 113 is connected to the first connecting portion 1141 of the first connector 114; in other embodiments, one of the two connecting ends of the first beam 113 is connected to the first connecting portion 1141 of one first connector 114, and the other of the two connecting ends is connected to the first connecting portion 1141 of the other first connector 114, thereby connecting a first connector 114 to each of the two connecting ends of the first beam 113. Exemplarily, the first connecting portion 1141 may be connected to the connecting end of the first beam 113 by welding, screwing, or snap-fitting.

[0122] The first joint 114 also has a second connecting portion 1142, which is used for the mutual connection between two first joints 114. That is, the second connecting portion 1142 is a part of the first joint 114 that is different from the first connecting portion 1141. The second connecting portion 1142 of one first joint 114 is connected to the second connecting portion 1142 of another first joint 114, thereby realizing the mutual connection between the two first joints 114. Exemplarily, the two second connecting portions 1142 can be connected to each other by welding, screwing, or snap-fitting. Adjacent first beam assemblies 112 are connected through corresponding second connecting portions 1142. That is, in the frame 11, two or more adjacent beam assemblies 111 are first beam assemblies 112, and two adjacent first beam assemblies 112 are connected to each other through the second connecting portions 1142 of their respective first joints 114.

[0123] For example, when frame 11 is a beam-column frame, such as a cubic frame, the three beam components 111 located at the corners of frame 11 can be first beam components 112. The three first beam components 112 are connected in pairs through the second connecting portions 1142 of the corresponding first joints 114, as shown in Figures 2 and 3. When frame 11 is a truss frame, such as a triangular truss, the three beam components 111 located at the corners of the truss can all be first beam components 112. The three first beam components 112 are connected in pairs through the second connecting portions 1142 of the corresponding first joints 114. 42. Alternatively, the two beam assemblies 111 at the top of the truss can both be first beam assemblies 112, and the two first beam assemblies 112 are connected by the second connection part 1142 of the corresponding first joint 114; or, when the frame 11 is a space frame, such as a flat space frame, two, three or more beam assemblies 111 connected to each other inside the frame 11 can both be first beam assemblies 112, and the two, three or more first beam assemblies 112 are connected by the second connection part 1142 of the corresponding first joint 114.

[0124] The frame 11 of this application embodiment is formed by interconnecting multiple beam assemblies 111. Some of the beam assemblies 111 are first beam assemblies 112. The first beam assembly 112 includes a first beam 113 and a first joint 114. The first joint 114 is connected to the connecting end of the first beam 113 through its first connecting part 1141. Two first joints 114 are connected through their second connecting parts 1142 to connect two first beams 113. When manufacturing the frame 11, the first beams 113 and the first joint 114 are first connected to form the first beam assembly 112, and then multiple first beam assemblies 112 are interconnected. Thus, the frame 11 is formed by interconnecting multiple beam assemblies 111, including the first beam assembly 112. When the frame 11 needs to be moved or transported, the individual beam assemblies 111 can be transported separately. Compared to transporting the welded integral frame 11, the transportation difficulty is reduced, and the risk of damage to the frame structure during transportation is reduced. In addition, each first beam 113 and its corresponding first joint 114 are connected in the same way. During production, the same auxiliary tooling can be used to achieve the connection (such as using the same welding auxiliary tooling to weld the two together), thereby simplifying the production process and reducing the types of production equipment. Furthermore, the first beam 113 and the first joint 114 are connected in the same way. After the head 114 is connected to form the first beam assembly 112, it is then assembled. The first beam assembly 112 is a whole component. Before it is assembled into the frame 11, the first beam assembly 112 can be subjected to various necessary treatments, such as anti-corrosion or insulation surface treatments (e.g., electroplating, spraying). Compared with the formed frame 11, the volume of a single first beam assembly 112 is greatly reduced. Each first beam assembly 112 is processed separately, which reduces the processing difficulty. The uniformity and consistency of surface treatments such as spraying can also be effectively improved. This can effectively reduce the risk of reduced support strength of the frame 11 due to inadequate local processing and improve the stability and reliability of the frame 11.

[0125] In some embodiments, as shown in Figures 4 to 6, in a first beam assembly 112, the outer surface of the first beam 113 and the outer surface of the corresponding first joint 114 are continuous surfaces.

[0126] Understandably, in frame 11, multiple beam assemblies 111 are interconnected and define an internal space. When the first beam assembly 112 is part of frame 11, the surface of the first beam 113 located in or facing the internal space is the inner surface of the first beam 113, and correspondingly, the surface of the first beam 113 facing away from the internal space, i.e., outside the internal space, is the outer surface of the first beam 113. When the first joint 114 is part of frame 11, the surface of the first joint 114 located in or facing the internal space is the inner surface of the first joint 114, and correspondingly, the surface of the first joint 114 facing away from the internal space, i.e., outside the internal space, is the outer surface of the first joint 114.

[0127] The outer surface of the first beam 113 and the corresponding outer surface of the first joint 114 are continuous surfaces. From a geometric perspective, there are no obvious steps, gaps or abrupt changes at the connection between the outer surfaces of the first beam 113 and the first joint 114. The outer surfaces of the first beam 113 and the first joint 114 are joined together to form a basically continuous and extended surface.

[0128] Thus, in this embodiment, the first connector 114 is connected to the first beam assembly 112 formed by the first beam 113 through the first connecting portion 1141. The first beam 113 and the first connecting portion 1141 of the first connector 114 are seamlessly and smoothly connected at the connection position, so that the outer surface of the first beam 113 and the outer surface of the first connector 114 form a seamless and smooth transition surface after connection. The outer surface of the first beam 113 and the outer surface of the first connector 114 are in a state of basically continuous extension. In this way, there is no connection gap between the outer surface of the first joint 114 and the outer surface of the first beam 113, making the overall structure of the first beam assembly 112 more aesthetically pleasing and neat. Furthermore, there is no stress abrupt change at the connection point, allowing forces to be distributed and transmitted more naturally along the continuous outer surface of the structure. Forces can be transmitted more evenly and smoothly between the first beam 113 and the first joint 114, thereby helping to improve the overall mechanical performance of the first beam assembly 112. In addition, when the first beam assembly 112 needs to undergo surface treatments such as corrosion protection, insulation, or coloring (e.g., electroplating, spraying), the continuous surface design can also improve the continuity, uniformity, and consistency of the surface treatment, thereby improving the surface protection and decorative effects of the first beam assembly 112.

[0129] In some embodiments, as shown in Figures 4 to 6, in a first beam assembly 112, a first joint 114 is sealed to a corresponding first beam 113. The first joint 114 and the first beam 113 are sealed together without any gap at the connection point, thereby preventing external solid particles, liquids, or gases from entering the interior of the first beam 113 or the first joint 114 through the connection point. Furthermore, when the frame 11 is used to manufacture structures such as a box 10 that require high sealing performance, it can effectively prevent the exchange of substances between the inner and outer spaces of the box 10 and other structures through the connection point between the first joint 114 and the first beam 113, thereby effectively maintaining the internal environment.

[0130] In some embodiments, as shown in Figures 6 to 8, the first connector 114 has a connector connection end 1143, the end face shape of the connector connection end 1143 is adapted to the cross-sectional shape of the first beam 113, and the first connection part 1141 includes a plug 1144 protruding from the end face of the connector connection end 1143, and the plug 1144 is adapted to be inserted into the first beam 113.

[0131] The end face shape of the connector 1143 is adapted to the cross-sectional shape of the first beam 113. That is, the shape and size design of the first connector 114 and the first beam 113 at the connection part are matched with each other, so that after the plug 1144 is inserted into the first beam 113, the end face of the connector 1143 can fit and abut against the end face of the first beam 113. On the basis of achieving a tight connection between the first connector 114 and the first beam 113, the outer surface of the first beam 113 and the outer surface of the first connector 114 are joined together and form a continuous surface after the first connector 114 and the first beam 113 are connected.

[0132] For example, when the cross-section of the first beam 113 is circular, the corresponding end face shape of the connector 1143 is also circular, and the outer diameter of the end face circle of the connector 1143 is equal to the outer diameter of the cross-section circle of the first beam 113, or the inner diameter of the end face circle is equal to the inner diameter of the cross-section circle of the first beam 113, and the outer diameters of both are also equal; when the cross-section of the first beam 113 is triangular, square or other irregular structure, the end face of the connector 1143 is also triangular, square or other irregular structure of the same shape, and at least the outer dimension of the end face structure of the connector 1143 is equal to the outer dimension of the cross-section of the first beam 113, so that after the two are connected, the outer surface of the first beam 113 and the outer surface of the first connector 114 are joined and form a continuous surface, as shown in Figures 7 and 8.

[0133] Understandably, in this embodiment, the first beam 113 can be a hollow beam, and the plug 1144 is directly adapted to the internal dimensions of the first beam 113, so that the plug 1144 can be directly inserted into the inner cavity of the first beam 113. Alternatively, the first beam 113 can also be a solid beam, with a slot provided at the end of the first beam 113 where it connects to the first connector 114. The shape and size of the slot are adapted to the shape and size of the plug 1144, so that the plug 1144 can be inserted into the slot and connected to the first beam 113.

[0134] In this embodiment, as shown in Figures 6 and 7, the first beam 113 is a hollow beam, and the shape of the plug 1144 is adapted to the inner cavity shape of the first beam 113. After the plug 1144 is inserted into the first beam 113, at least a portion of the sidewall of the plug 1144 remains in close contact with the inner cavity wall of the first beam 113, so that the first connector 114 and the first beam 113 have good connection strength, maintaining the stability and reliability of the connection. The sidewall of the plug 1144 can be similar to the inner cavity wall of the first beam 113, and the sidewall of the plug 1144 can be completely and fully in contact with the inner cavity wall of the first beam 113, as shown in Figure 8. Alternatively, the sidewall of the plug 1144 can include one or more parts, and one or more parts can be in contact with portions of the inner cavity wall of the first beam 113, as shown in Figure 7.

[0135] Thus, the shape and size of the connector end 1143 of the first connector 114 are adapted to the cross-sectional shape and size of the first beam 113. After the first connector 114 is inserted into the first beam 113, the end face of the connector end 1143 can fit and abut against the end face of the first beam 113, so that the connection between the first beam 113 and the first connector 114 can achieve reliable connection and sealing.

[0136] In some embodiments, the connector end 1143 is welded to the first beam 113.

[0137] In this embodiment, the first beam 113 and the connector end 1143 of the first connector 114 are connected by welding. For example, arc welding, laser welding, or ultrasonic welding can be performed on the end face of the connector end 1143 at the interface with the first beam 113, connecting the first beam 113 and the first connector 114 while also sealing the interface. Alternatively, plug welding or similar methods can be used to weld the plug 1144 to the side wall of the first beam 113, resulting in a larger welding area and improved weld strength. Thus, after the plug 1144 is inserted into the first beam 113, welding is performed at the interface, or plug welding is used to weld the first connector 114 to the side wall of the first beam 113, ensuring a stable and reliable sealed connection between the first connector 114 and the first beam 113.

[0138] In some embodiments, as shown in Figures 2, 4 and 9, the outer surfaces of the two interconnected first connectors 114 are continuous surfaces.

[0139] That is, after the second connecting parts 1142 of the two first connectors 114 are connected to each other, there are no obvious steps, gaps or abrupt changes at the connection position of the outer surfaces of the two first connectors 114, and the outer surfaces of the two first connectors 114 are joined to form a basically continuous extended surface.

[0140] Thus, after the two first joints 114 are connected through their respective second connecting parts 1142, the outer surfaces of the two first joints 114 also form a continuous surface. The two interconnected second connecting parts 1142 are seamlessly and smoothly connected at the connection position, so that the outer surfaces of the two interconnected first joints 114 form a seamless and smooth transition surface after connection. In this way, there are no connection gaps between the outer surfaces of the two interconnected first joints 114, making the overall structure of the frame 11 with multiple first beam assemblies 112 more aesthetically pleasing and neat. Furthermore, there are no stress abrupt changes between the interconnected first beam assemblies 112, and the force can be transmitted more evenly and smoothly between the interconnected first beam assemblies 112, thereby enhancing the overall mechanical properties of the frame 11. In addition, when the frame 11 needs to undergo surface treatments such as corrosion protection, insulation, or coloring (such as electroplating, spraying, etc.), the continuous surface design can also improve the continuity, uniformity, and consistency of the surface treatment, thereby improving the surface protection and decorative effects of the frame 11.

[0141] In some embodiments, the two first connectors 114 connected to each other are sealed together. The sealed connection of the two first connectors 114 also ensures a reliable seal at the connection point, preventing substances in the environment from entering the first connector 114 through the connection point, and also preventing the exchange of substances between the inner and outer spaces of the box 10 and other structures through the connection point, which helps to improve the stability of the internal space of the box 10 and other structures.

[0142] In some embodiments, as shown in FIG4, FIG5, FIG7 and FIG9, the second connecting portion 1142 includes a first sub-portion 11421 and a second sub-portion 11422. In two interconnected first beam assemblies 112, the first sub-portion 11421 of one first connector 114 is connected to the second sub-portion 11422 of the other first connector 114.

[0143] Understandably, the second connecting portion 1142 includes a first sub-portion 11421 and a second sub-portion 11422. That is, in the two first beam assemblies 112, each first beam 113 has a corresponding first connector 114, and the second connecting portion 1142 of each first connector 114 includes a first sub-portion 11421 and a second sub-portion 11422. The first sub-portion 11421 can be a part of the second connecting portion 1142, and correspondingly, the second sub-portion 11422 is another part of the second connecting portion 1142. When the two first beam assemblies 112 are connected to each other, the first sub-portion 11421 of the first connector 114 of one first beam assembly 112 is connected to the second sub-portion 11422 of the first connector 114 of the other first beam assembly 112. The first sub-portion 11421 of one first connector 114 and the second sub-portion 11422 of the other first connector 114 can be connected by a connection method such as snap-fit, plug-in, screw-in, or welding.

[0144] For example, the first sub-part 11421 may be a sidewall of the second connecting part 1142, and the second sub-part 11422 may be another sidewall. The sidewall of the first sub-part 11421 of one first connector 114 may be screwed or welded to the other sidewall of the second sub-part 11422 of another first connector 114 to connect the two first connectors 114. Alternatively, the first sub-part 11421 may be a protrusion on the second connecting part 1142, and the second sub-part 11422 may be a groove that fits the protrusion. The protrusion of the first sub-part 11421 of one first connector 114 may be snapped or plugged into the groove of the second sub-part 11422 of another first connector 114.

[0145] In this embodiment, the second connecting part 1142 serves as the connecting part for connecting the two first connectors 114. It includes a first sub-part 11421 and a second sub-part 11422. When the two first connectors 114 are connected, the first sub-part 11421 of one first connector 114 can be arbitrarily connected to the second sub-part 11422 of the other first connector 114. The two first connectors 114 that are connected to each other can have the same structure and size. Any two first connectors 114 can be connected without providing male and female parts for structural adaptation connection. This allows the first connector 114 to serve as a standard connector for the mutual connection between any two first beams 113. The first connector 114 has good versatility and practicality.

[0146] In some embodiments, as shown in FIG7 and FIG9 to 11, a recessed platform 11423 is provided on the outer surface of the first sub-part 11421. In two interconnected first beam assemblies 112, at least a portion of the second sub-part 11422 of one first connector 114 is embedded in the recessed platform 11423 of the other first connector 114, so that the outer surfaces of the interconnected first sub-part 11421 and the outer surfaces of the second sub-part 11422 are flush.

[0147] Understandably, the first sub-part 11421 has a recessed platform 11423 on its outer surface. The platform 11423 has an outer surface that is disposed away from the internal space of the frame 11. The platform 11423 is formed by the recess on the outer surface of the first sub-part 11421. From the appearance, the outer surface of the first connector 114 is not flat, but has a downwardly recessed area, which is the platform 11423. Furthermore, the shape, size, and depth of the recess of this platform 11423 need to be designed according to the second sub-part 11422 so that after the two first connectors 114 are connected, at least a portion of the second sub-part 11422 of one first connector 114 can be embedded in the platform 11423 on the other first connector 114.

[0148] For example, the recessed platform 11423 may be circular, square or other irregularly shaped. Correspondingly, the second sub-part 11422 has a portion of its structure that is circular, square or similar to the irregular shape of the recessed platform 11423. This portion of the structure of the second sub-part 11422 can be embedded in the recessed platform 11423. Furthermore, the depth of the recessed platform 11423 recessed downward from the outer surface of the first connector 114 is substantially equivalent to the thickness of the portion of the second sub-part 11422 that is embedded in the recessed platform 11423. This ensures that after this portion of the structure of the second sub-part 11422 is embedded in the recessed platform 11423, the outer surface of the first sub-part 11421 and the outer surface of the second sub-part 11422 remain flush.

[0149] It should be noted that keeping the outer surface of the first sub-part 11421 flush with the outer surface of the second sub-part 11422 means that the outer surfaces of the interconnected first sub-part 11421 and the second sub-part 11422 are on the same plane, with no height difference between them. Furthermore, the first sub-part 11421 and the second sub-part 11422 are seamlessly joined on their outer surfaces. From the appearance, the outer surfaces of the first sub-part 11421 and the second sub-part 11422 after connection form a continuous and flat plane.

[0150] Understandably, the outer surface of the first sub-part 11421 can be a part of the outer surface of the first connector 114, and the outer surface of the second sub-part 11422 can also be a part of the outer surface of the first connector 114. The outer surfaces of the first sub-part 11421 and the second sub-part 11422 are kept flush, so that after the two first connectors 114 are connected to each other, the outer surfaces of the two first connectors 114 can form a continuous surface.

[0151] In this embodiment, on the same first connector 114, the first sub-part 11421 is provided with a recessed platform 11423 whose size and shape are adapted to at least a portion of the shape and size of the second sub-part 11422. After the two first connectors 114 are connected, at least a portion of the second sub-part 11422 can be correspondingly embedded into the recessed platform 11423, so that the connection position can be structurally abutted by the second sub-part 11422 and the recessed platform 11423, thereby enabling the two first connectors 114 to have a certain ability to resist external forces such as shear force at the connection position, reducing the probability of relative displacement of the two first connectors 114. Furthermore, the second sub-part 11422 is at least partially embedded in the recessed platform 11423, and the outer surfaces of the interconnected first sub-part 11421 and the second sub-part 11422 are kept flush. The outer surfaces of the two interconnected parts are smoothly connected without gaps or misalignment. When other components need to be installed or surface treatments (such as painting or electroplating) are required, the flush outer surfaces can provide a better operating foundation and reduce the risk of installation difficulties or poor surface treatment results due to uneven surfaces.

[0152] In some embodiments, as shown in FIG7 and FIG9 to 11, the recessed platform 11423 is provided with a first connecting hole 11424, and the second sub-part 11422 is provided with a second connecting hole 11425. The first connecting hole 11424 and the second connecting hole 11425 are used to cooperate with the connector 1002 to connect the first sub-part 11421 and the second sub-part 11422.

[0153] The recessed platform 11423 and the second sub-part 11422 are respectively provided with a first connecting hole 11424 and a second connecting hole 11425. When the two first connectors 114 are connected, a connector 1002 that is compatible with the first connecting hole 11424 and the second connecting hole 11425 can be used for connection. The connector 1002 can be a screw, bolt, pin, rivet, etc. In this way, the recessed platform 11423 and the second sub-part 11422, i.e. the two first connectors 114, are connected through the connector 1002. The connection structure is simple and the operation is convenient.

[0154] In a specific embodiment, the first connecting hole 11424 can be a screw hole, the second connecting hole 11425 can be a through hole, the connector 1002 corresponds to a screw or bolt, and the first sub-part 11421 is screwed to the corresponding second sub-part 11422 to connect the two first connectors 114. The first connecting hole 11424 can be a countersunk hole, allowing the head of the screw or bolt or other connector 1002 to be embedded in the second connecting part 1142 without protruding from the outer surface of the second connecting part 1142.

[0155] In some embodiments, as shown in FIG7 and FIG9 to 11, the second connecting portion 1142 further has a first wedge surface 11426 and a second wedge surface 11427. In the two interconnected first joints 114, the first wedge surface 11426 of one first joint 114 abuts against the second wedge surface 11427 of the other first joint 114, so that the two adjacent first beam assemblies 112 are connected at a first preset angle α.

[0156] In this embodiment, it can be understood that a wedge surface is a plane with an inclined angle, similar to the side of a wedge, gradually thickening or thinning from one end to the other. When two components are connected and their respective wedge surfaces are kept in contact, the inclined angle of the wedge surface guides the components to connect at a specific angle. For example, in frame 11, if two first beam assemblies 112 are to be connected at a certain angle (e.g., a first preset angle), by designing a suitable wedge surface angle, the required connection angle can be automatically formed when the wedge surfaces of the two joints abut against each other.

[0157] In this embodiment, the second connecting portion 1142 of the first connector 114, in addition to having the structure of the first sub-part 11421 and the second sub-part 11422 in the above embodiments, also has a first wedge surface 11426 and a second wedge surface 11427. In the two interconnected first connectors 114, the first wedge surface 11426 of one first connector 114 abuts against the second wedge surface 11427 of the other first connector 114. The shape and angle of the first wedge surface 11426 and the second wedge surface 11427 are determined by design. When they abut against each other, they can guide the two adjacent first beam assemblies 112 to connect at a first preset angle.

[0158] For example, if the first preset angle is 90°, that is, when the two first beam assemblies 112 need to be connected vertically, the design of the inclination angle of the first wedge surface 11426 and the inclination angle of the second wedge surface 11427 satisfies that when the two meet, a 90° angle is naturally formed between the two first beam assemblies 112. Furthermore, through the connection of the first sub-part 11421 and the second sub-part 11422, and the abutment of the first wedge surface 11426 and the second wedge surface 11427, the connected two first beam assemblies 112 always maintain a 90° angle. Alternatively, if the first preset angle is 60°, that is, when the two first beam assemblies 112 need to be connected at a 60° angle, the design of the inclination angle of the first wedge surface 11426 and the inclination angle of the second wedge surface 11427 satisfies that when the two meet, a 60° angle is naturally formed between the two first beam assemblies 112. Furthermore, through the connection of the first sub-part 11421 and the second sub-part 11422, and the abutment of the first wedge surface 11426 and the second wedge surface 11427, the connected two first beam assemblies 112 always maintain a 60° angle.

[0159] Thus, when the two first joints 114 are connected, the first wedge surface 11426 of one first joint 114 abuts against the second wedge surface 11427 of the other second joint. By designing the shape and angle of the first wedge surface 11426 and the second wedge surface 11427, when the two abut against each other, the two first beam assemblies 112 connected to each other can be guided to connect at a first preset angle. Furthermore, when the first wedge surface 11426 and the second wedge surface 11427 come into contact, the friction and mutual support of the wedge surfaces can effectively resist external forces, reducing the risk of angular displacement between the interconnected first beam assemblies 112. The force transmission at the connection position of the frame 11 is more uniform, and the connection strength and support stability of the structure are also higher. In addition, compared with the connection method of using a complex angle adjustment mechanism or multiple connectors, using the contact of the wedge surfaces to achieve a specific angle connection only requires the two corresponding first wedge surfaces 11426 and second wedge surfaces 11427 to be fitted together. The angle positioning structure is simple and the connection operation is convenient, thereby improving the assembly efficiency of the frame 11. In the process of large-scale frame structure production and installation, it can save manpower and time costs, and improve production efficiency and economic benefits.

[0160] Furthermore, a first wedge surface 11426 and a second wedge surface 11427 are provided in the second connecting part 1142 of the first joint 114. When the two first joints are connected, the first wedge surface 11426 of one first joint 114 is connected to the second wedge surface 11427 of the other first joint 114. The first joint 114 can still be used as a standard joint for the mutual connection between any two first beams 113. The first joint 114 has good versatility and practicality.

[0161] In some embodiments, as shown in Figures 2, 4, 9 and 11, the frame 11 includes three first beam assemblies 112 interconnected by first joints 114, wherein a first wedge surface 11426 of one first joint 114 abuts against a second wedge surface 11427 of another first joint 114.

[0162] In this embodiment, the frame 11 includes three first beam assemblies 112. Each first beam assembly 112 includes a first beam 113 and a first connector 114 connected to the end of the first beam 113. The three first beam assemblies 112 are connected in pairs through their respective first connectors 114 to form an integral structure. In this integral structure, adjacent first wedge surfaces 11426 abut against second wedge surfaces 11427. After the three first connectors 114 are connected, the first wedge surface 11426 of the first first connector 114 abuts against the second wedge surface 11427 of the second first connector 114, the first wedge surface 11426 of the second first connector 114 abuts against the second wedge surface 11427 of the third first connector 114, and the first wedge surface 11426 of the third first connector 114 abuts against the second wedge surface 11427 of the first first connector 114. For example, the three first beam components 112 are component A, component B and component C respectively. Component A is connected to component B, and the first wedge surface 11426 of component A abuts against the second wedge surface 11427 of component B. Then component B is connected to component C, and the first wedge surface 11426 of component B abuts against the second wedge surface 11427 of component C. Finally, component C is connected to component A, and the first wedge surface 11426 of component C abuts against the second wedge surface 11427 of component A. The three second connecting parts 1142 of components A, B and C are spliced ​​together to roughly form a columnar structure, such as a prism or cylinder.

[0163] In this embodiment, three first beam assemblies 112 are connected to each other in pairs through three first joints 114 to form part of the frame 11. The three second connecting parts 1142 are assembled to roughly form a column structure. The sum of the first included angles of the three second connecting parts 1142 is exactly equal to 360°. In this way, a closed and mutually supporting wedge-shaped abutment structure can be formed between the three interconnected first joints 114, so that the three corresponding first beams 113 are connected to form a stable overall structure. Force can be effectively transmitted and distributed between the three interconnected first beam assemblies 112. The three first beam assemblies 112 can be spliced ​​to form three adjacent edges of the frame 11. Furthermore, by designing the angles of the first wedge surface 11426 and the second wedge surface 11427, any two first beam assemblies 112 of the three interconnected first beam assemblies 112 have the same included angle, so as to meet the angle design requirements between adjacent beams in the frame 11.

[0164] Understandably, in specific embodiments, in the three interconnected first beam assemblies 112, the included angles between the plane containing the first wedge surface 11426 of the first joint 114 of each first beam assembly 112 and the plane containing the second wedge surface 11427 can be equal or unequal. That is, the included angles of the three first joints 114 can be equal or unequal, as long as the sum of the three included angles is equal to 360°. For example, in the three interconnected first beam assemblies 112, the included angles of the three first joints 114 can be 90°, 150° and 120° respectively, or the three included angles can be 100°, 130° and 130° respectively, or all three included angles can be 120°, etc.

[0165] In some embodiments, as shown in Figures 4, 9 and 11, in a first connector 114, the plane containing the first wedge surface 11426 and the plane containing the second wedge surface 11427 have a first included angle β, which is 120°.

[0166] That is, in the three interconnected first beam assemblies 112, the first included angle of each of the three first joints 114 is 120°, that is, the structural design of the three first joints 114 is basically the same, which allows the three first beams 113 with the same structure to be connected through the three first joints 114 with the same structure. In this way, the three first beam assemblies 112 are basically indistinguishable in appearance and structural function. The three first beam assemblies 112 can be assembled in any order. The first beam assembly 112 can be produced and assembled as a standard part, which helps to improve the overall forming efficiency of the frame 11.

[0167] In some embodiments, as shown in Figures 4, 9 to 11, in a first connector 114, the first wedge surface 11426 and the second wedge surface 11427 intersect at the first side 1142a, and in the three interconnected first connectors 114, the corresponding three first sides 1142a are parallel and abut against each other.

[0168] In this context, it can be understood that the first wedge surface 11426 and the second wedge surface 11427 intersect at the first side 1142a, meaning that within each first joint 114, both the first wedge surface 11426 and the second wedge surface 11427 intersect at the first side 1142a, where the first side 1142a is the line of intersection of the first wedge surface 11426 and the second wedge surface 11427 with a first included angle. In the three interconnected first joints 114, the corresponding three first sides 1142a are parallel and abut against each other, like three puzzle pieces whose edges fit together. This method firmly connects the three first joints 114 together, thereby ensuring a firm and stable connection between the three first beam assemblies 112.

[0169] In this embodiment, after the three first beam assemblies 112 are connected to each other in pairs through the three first joints 114, the first sides 1142a of the connecting first wedge surfaces 11426 and second wedge surfaces 11427 of each second connecting part 1142 are parallel to each other and abut against each other. The three second connecting parts 1142 can be spliced ​​to roughly form a solid column structure. Thus, the abutting of the three first sides 1142a can limit the abutting first wedge surfaces 11426 and second wedge surfaces 11427, reducing the risk of mutual sliding between them. Furthermore, by setting the three first sides 1142a to abut against each other, the three first beam assemblies 112 can also achieve uniform force transmission through the first sides 1142a, thereby helping to improve the overall load-bearing capacity and deformation resistance of the frame 11.

[0170] In a specific embodiment, when the first included angle of each first connector 114 is 120°, the three first sides 1142a are parallel and abut each other, so that the three first connectors 114 can maintain a uniform and symmetrical spatial posture when connected, thereby further enhancing the tightness and integrity of the connection between the three first connectors 114.

[0171] In some embodiments, as shown in Figures 4, 9 to 11, in a first connector 114, the first wedge surface 11426 intersects the outer surface of the first connector 114 at the second side 1142b, and the second wedge surface 11427 intersects the outer surface of the first connector 114 at the third side 1142c. In the three interconnected first connectors 114, the adjacent second side 1142b and third side 1142c are sealed together.

[0172] In each of the first joints 114, the first wedge surface 11426 intersects the outer surface of the first joint 114 at the second side 1142b, and the second wedge surface 11427 intersects the outer surface of the first joint 114 at the third side 1142c. When the three first joints 114 are connected to each other, the adjacent second side 1142b and third side 1142c are sealed together, so that the outer surfaces of the two connected first joints 114 are sealed together, so that water, vapor and the like cannot pass through the connection between the first joints 114.

[0173] In some embodiments, as shown in Figures 9 to 11, the first wedge surface 11426 is provided with a groove 11428 and the second wedge surface 11427 is provided with a protrusion 11429. The two ends of the groove 11428 pass through the first side 1142a and the second side 1142b, respectively, and the two ends of the protrusion 11429 extend to the first side 1142a and the third side 1142c, respectively. The groove 11428 and the protrusion 11429 are connected at the first side 1142a. Among the three interconnected first connectors 114, the protrusion 11429 of one first connector 114 is sealed and engaged with the groove 11428 of another first connector 114.

[0174] Thus, a groove 11428 and a protrusion 11429 are provided between the abutting first wedge surface 11426 and the second wedge surface 11427 to fit and engage. The convex-concave structure can increase the misalignment shear strength between the abutting first wedge surface 11426 and the second wedge surface 11427, thereby improving the connection strength. Based on this, in one first joint 114, the two ends of the groove 11428 extend through the first side 1142a and the second side 1142b, and the two ends of the protrusion 11429 extend to the first side 1142a and the third side 1142c. When the three first joints 114 are connected to each other, the interlocking groove and protrusion structure extends from one side of the outer surface of the first joint 114 to the opposite side, and the two are sealed together, so that the two connected first joints 114 achieve a sealed connection.

[0175] In a specific embodiment, sealant can be injected into the groove 11428 to seal the connection protrusion 11429, or a sealing strip can be installed in the groove 11428 to seal the connection protrusion 11429.

[0176] In some embodiments, as shown in Figures 4, 9 to 11, the first connector 114 further has a fourth side 1142d and a fifth side 1142e disposed opposite to each other, the fourth side 1142d being connected to the second side 1142b, and the fifth side 1142e being connected to the third side 1142c; in a first beam assembly 112, the fourth side 1142d is flush with one side of the first beam 113, and the fifth side 1142e is flush with the opposite side of the first beam 113; in two interconnected first connectors 114, adjacent fourth sides 1142d and fifth sides 1142e are flush with each other.

[0177] Understandably, "two different edges flush butt-fitting" means that the edges of the two edges fit together perfectly without any height difference or misalignment. In a first beam assembly 112, the fourth edge 1142d is flush butt-fitting with one side edge of the first beam 113, and the fifth edge 1142e is flush butt-fitting with the opposite side edge of the first beam 113. This ensures that the first joint 114 and the first beam 113 are completely aligned at the edges of the connection point. After connection, there is no height difference or gap between the first beam 113 and the first joint 114, and visually, the first beam 113 and the first joint 114 are flatly connected. In two interconnected first joints 114, the adjacent fourth edge 1142d and fifth edge 1142e are flush butt-fitting, meaning that the two first joints 114 are also flat and seamlessly connected.

[0178] Thus, after the two first beams 113 are connected by the two first joints 114, a flat, continuous and seamless connection is maintained between the first beam 113 and the first joint 114, as well as between the first joints 114 and the first joints 114. This allows the force to be more dispersed and evenly transmitted between the first joints 114 and the first beam 113, as well as between adjacent first joints 114, thereby helping to improve the strength and load-bearing capacity of the connection structure.

[0179] In some embodiments, as shown in Figures 4, 9 to 11, the fourth side 1142d and the fifth side 1142e are both concave arc sides, and the sum of the arc of the fourth side 1142d and the arc of the fifth side 1142e is equal to the first preset angle.

[0180] Thus, by setting both the fourth side 1142d and the fifth side 1142e as concave arc sides, when the two first beam assemblies 112 are connected, the fourth side 1142d and the fifth side 1142e can also limit the connection angle between the two. When the two first beam assemblies 112 are connected at the first preset angle, the adjacent fourth side 1142d and the fifth side 1142e remain flush and aligned, so that the two connected first beam assemblies 112 have the first preset angle between them.

[0181] In a specific embodiment, the first preset angle is a right angle, that is, the two first beam components 112 are connected vertically, the sum of the arc of the fourth side 1142d and the arc of the fifth side 1142e is 90°, and after the two first beam components 112 are connected, the adjacent fourth side 1142d and fifth side 1142e are kept flush and connected.

[0182] In other embodiments, it is understood that the first preset angle can also be an angle other than 90°, such as an acute angle or an obtuse angle. Correspondingly, the sum of the arc of the fourth side 1142d and the arc of the fifth side 1142e should be equal to the first preset angle. For example, the first preset angle is 120°, and the sum of the arcs of the fourth side 1142d and the fifth side 1142e is 120°; or, the first preset angle is 60°, and the sum of the arcs of the fourth side 1142d and the fifth side 1142e is 60°.

[0183] In a specific embodiment, the arc of the fourth side 1142d is equal to the arc of the fifth side 1142e. For example, the arc of the fourth side 1142d and the arc of the fifth side 1142e are both 45°.

[0184] Please refer to Figures 2 to 11 together. An embodiment of this application provides a frame 11, which includes twelve first beam assemblies 112. Each first beam assembly 112 has a first connector 114 connected to its opposite ends of the first beam 113. The twelve first beam assemblies 112 are interconnected through the first connectors 114 to form the frame 11.

[0185] In this embodiment, in each first beam assembly 112, the first connector 114 includes a first connecting portion 1141, which is connected to the connecting end of the first beam 113. The first connector 114 also has a connector connecting end 1143, the end face shape of which is adapted to the cross-sectional shape of the first beam 113. The first connecting portion 1141 includes a plug 1144 protruding from the end face of the connector connecting end 1143, which is adapted to be inserted into the first beam 113. At the same time, the connector connecting end 1143 is sealed and welded to the first beam 113, and the outer surface of the first beam 113 and the corresponding outer surface of the first connector 114 are continuous surfaces. The first connector 114 also includes a second connecting portion 1142, and the two first connectors 114 are sealed and connected through the corresponding two second connecting portions 1142. Furthermore, the outer surfaces of the two connected first connectors 114 form a continuous surface.

[0186] The second connecting part 1142 includes a first sub-part 11421 and a second sub-part 11422. The first sub-part 11421 has a recessed platform 11423 on its outer surface, and the platform 11423 has a screw hole. The second sub-part 11422 has a through hole. A portion of the second sub-part 11422 of one first connector 114 is embedded into the platform 11423 of the other first connector 114 and connected by bolts. The shape, size, and depth of the platform 11423 are substantially equivalent to the shape, size, and thickness of a portion of the second sub-part 11422, so that the outer surfaces of the corresponding first sub-part 11421 and second sub-part 11422 can remain flush after connection.

[0187] The second connecting part 1142 also has a first wedge surface 11426 and a second wedge surface 11427. In each first joint 114, the plane where the first wedge surface 11426 is located intersects the plane where the second wedge surface 11427 is located at the first side 1142a, and the angle between the plane where the first wedge surface 11426 is located and the plane where the second wedge surface 11427 is located is 120°. The first wedge surface 11426 intersects the outer surface of the first connector 114 at the second side 1142b, and the second wedge surface 11427 intersects the outer surface of the first connector 114 at the third side 1142c. The first wedge surface 11426 is provided with a groove 11428, and the second wedge surface 11427 is provided with a protrusion 11429. The two ends of the groove 11428 pass through the first side 1142a and the second side 1142b, respectively. The two ends of the protrusion 11429 extend to the first side 1142a and the third side 1142c, respectively. The groove 11428 and the protrusion 11429 are connected at the first side 1142a. The groove 11428 is provided with sealant so that the protrusion 1142 and the groove 11428 are sealed and snapped together. Each first joint 114 also has a fourth side 1142d and a fifth side 1142e arranged opposite to each other. The fourth side 1142d is connected to the second side 1142b, and the fifth side 1142e is connected to the third side 1142c. The fourth side 1142d is flush with one side of the first beam 113 connected thereto, and the fifth side 1142e is flush with the other side of the first beam 113. Both the fourth side 1142d and the fifth side 1142e are concave arc edges. The arc of the fourth side 1142d and the arc of the fifth side 1142e are equal and both are 45°.

[0188] Three first beam assemblies 112 (one of which is a column and the other two are crossbeams) are connected vertically in pairs to form a corner of the frame 11. After the three first joints 114 are connected to each other, the adjacent fourth side 1142d and fifth side 1142e are flush and joined together, the adjacent first wedge surface 11426 and second wedge surface 11427 abut together, the first side 1142a of the three interconnected first joints 114 are parallel and abut together, and the adjacent grooves 11428 and protrusions 11429 are sealed and engaged to seal the connection between the adjacent second side 1142b and third side 1142c, that is, to seal the connection between the two first joints 114.

[0189] In this embodiment, the frame 11 is a cubic frame 11 assembled entirely from first beam components 112. The first beam components 112 can be produced and transported independently. At the same time, the first beam components 112 can be assembled as a standard part to form the frame 11. During assembly, the first joints 114 of each first beam component 112 are connected to each other. The beam components 111 have good versatility. In addition, for the frame 11 that requires surface treatment, each first beam component 112 can be independently surface treated before assembling the frame 11, thereby improving the uniformity and consistency of the surface treatment.

[0190] Referring to Figures 9 to 11, another embodiment of this application provides a connector assembly, which includes a plurality of interconnectable first connectors 114. Each first connector 114 has a first connecting portion 1141 and a second connecting portion 1142. The first connecting portion 1141 is used to connect to the connecting end of the first beam 113, and the second connecting portion 1142 is used to connect two first connectors 114 to each other. The second connecting portion 1142 includes a first sub-part 11421 and a second sub-part 11422. The first sub-part 11421 of one first connector 114 is connected to the second sub-part 11422 of another first connector 114 to connect two first connectors 114.

[0191] In this embodiment of the application, the connector assembly including multiple interconnectable first connectors 114 means that the connector assembly is an assembly composed of two or more first connectors 114, and the multiple first connectors 114 are connected to each other through their respective second connecting portions 1142 to form a complete connector assembly. Exemplarily, the two second connecting portions 1142 can be connected to each other by welding, screwing, or snap-fitting.

[0192] Understandably, each first connector 114's second connecting portion 1142 includes a first sub-part 11421 and a second sub-part 11422. The first sub-part 11421 can be a part of the second connecting portion 1142, and correspondingly, the second sub-part 11422 is another part of the second connecting portion 1142. When two first connectors 114 are connected to each other, the first sub-part 11421 of one first connector 114 is connected to the second sub-part 11422 of the other first connector 114. The first sub-part 11421 of one first connector 114 and the second sub-part 11422 of the other first connector 114 can be connected by a snap-fit, plug-in, screw-in, or welding connection method.

[0193] For example, the first sub-part 11421 may be a sidewall of the second connecting part 1142, and the second sub-part 11422 may be another sidewall. The sidewall of the first sub-part 11421 of one first connector 114 may be screwed or welded to the other sidewall of the second sub-part 11422 of another first connector 114 to connect the two first connectors 114. Alternatively, the first sub-part 11421 may be a protrusion on the second connecting part 1142, and the second sub-part 11422 may be a groove that fits the protrusion. The protrusion of the first sub-part 11421 of one first connector 114 may be snapped or plugged into the groove of the second sub-part 11422 of another first connector 114.

[0194] Thus, the second connecting part 1142 serves as the connecting part for connecting the two first joints 114. It includes a first sub-part 11421 and a second sub-part 11422. When the two first joints 114 are connected, the first sub-part 11421 of one first joint 114 can be arbitrarily connected to the second sub-part 11422 of the other first joint 114. The two first joints 114 that are connected to each other can have the same structure and size. Any two first joints 114 can be connected without providing male and female parts for structural adaptation. This allows the first joint 114 to serve as a standard joint for the mutual connection between any two first beams 113. The first joint 114 has good versatility and practicality.

[0195] Understandably, in the embodiments of this application, the structure of the first joint 114, the mutual cooperation and connection between the two first joints 114, and the mutual cooperation and connection between the first joint 114 and the first beam 113 are basically the same as in the embodiments described above, and will not be repeated here.

[0196] Referring together to Figures 2 to 7 and Figure 12, another embodiment of this application provides a frame fabrication method for fabricating frame 11. The frame fabrication method includes the following steps:

[0197] S10. Using the plurality of first beams 113 and the plurality of first connectors 114 in the above embodiment, a first connector 114 is connected to each of the opposite ends of each first beam 113 to obtain a plurality of first beam assemblies 112.

[0198] S20. The twelve first beam assemblies 112 are interconnected through the first joint 114 to obtain the frame 11.

[0199] For example, in step S10, the plug 1144 of the first connector 114 is inserted into the first beam 113, and then the connector connection end 1143 of the first connector 114 is welded to the first beam 113, so that a first connector 114 is connected to each of the two opposite connection ends of the first beam 113.

[0200] For example, in step S20, the first joints 114 of any two first beam assemblies 112 are connected to each other to connect the two first beam assemblies 112. After the two first beam assemblies 112 are connected, any one of the first beam assemblies 112 is connected to the third first beam assembly 112 to connect the three first beam assemblies 112 together.

[0201] For example, by means of connection such as snap-fit, plug-in, screw-in or welding, the first sub-part 11421 of the first connector 114 of the first first beam assembly 112 is connected to the second sub-part 11422 of the first connector 114 of the second first beam assembly 112, and then the first sub-part 11421 of the first connector 114 of the second first beam assembly 112 is connected to the second sub-part 11422 of the first connector 114 of the first first beam assembly 112, thereby connecting the three first beam assemblies 112.

[0202] Thus, according to the specific structural form of the frame 11, the twelve first beam components 112 are connected in pairs to form the frame 11. The assembly operation of the frame 11 is convenient and flexible. Before assembling the frame 11, the first beam components 112 can be transported independently, which can effectively reduce the transportation difficulty of the frame 11 and reduce the risk of damage to the frame structure during transportation. Furthermore, the first beam 113 and the first joint 114 are connected to form the first beam components 112 before being assembled into the frame 11. As a whole, the first beam components 112 can be subjected to various necessary treatments before being assembled into the frame 11. The volume of a single first beam component 112 is small, and the processing of each first beam component 112 is carried out separately, which reduces the processing difficulty.

[0203] In some embodiments, as shown in FIG13, the step of interconnecting the twelve first beam assemblies 112 via the first joint 114 is further included:

[0204] S101. Perform surface treatment on each first beam assembly 112.

[0205] That is, after connecting the first joint 114 to the first beam 113 to form the first beam assembly 112, the surface of each first beam assembly 112 is treated. The surface treatment includes, but is not limited to, anti-corrosion treatment and insulation treatment, such as electroplating, spraying (such as powder coating or paint spraying) to treat the surface of the first beam assembly 112.

[0206] Thus, after the first beam 113 and the first joint 114 are connected to form the first beam assembly 112, the first beam assembly 112, as a whole, can be surface-treated before being assembled into the frame 11. The volume of a single first beam assembly 112 is small, and each first beam assembly 112 is processed separately, which reduces the processing difficulty. The uniformity and consistency of surface treatments such as electroplating and spraying can also be effectively improved, thereby effectively reducing the risk of reduced support strength of the frame 11 due to inadequate local processing, and improving the stability and reliability of the frame 11 obtained by the frame manufacturing method of this embodiment.

[0207] In some embodiments, as shown in FIG14, the step further includes the following steps before surface treatment of each of the first beam assemblies 112:

[0208] S1001. Seal the connection holes on the second connection parts 1142 of each of the first connectors 114 used for mutual connection.

[0209] In some embodiments, when the two first connectors 114 are connected to the conductive connector 1002 through the connection hole, the surface of the first beam assembly 112 may lose conductivity after special surface treatment. Therefore, before surface treatment of the first beam assembly 112, the connection hole on the second connection portion 1142 of the first connector 114 is sealed to cover the connection hole. In this way, when the connector 1002 is connected to the connection hole, the connector 1002 can achieve equipotential connection with the first beam assembly 112 by contacting the hole wall of the connection hole. This enables equipotential connection between the various first beam assemblies 112 of the frame 11, making the potential of various structures and parts of the frame 11 consistent and reducing the risk of electrical damage to the frame 11 due to potential differences.

[0210] As shown in Figures 2, 3, and 15, when frame 11 is a cube-shaped frame, it can be made by following these steps:

[0211] S10. Using the plurality of first beams 113 and the plurality of first joints 114 in the above embodiment, a first joint 114 is welded to each of the opposite ends of each first beam 113, thereby obtaining twelve first beam assemblies 112.

[0212] S1001. Seal the connection holes on the second connection parts 1142 of each first connector 114 used for mutual connection;

[0213] S101. Perform surface treatment on each first beam assembly 112;

[0214] S201. Using four of the twelve first beam assemblies 112, connect the four first beam assemblies 112 end to end through the corresponding first joints 114 to obtain the first square.

[0215] S202. Using four of the twelve first beam assemblies 112, connect the four first beam assemblies 112 end to end through the corresponding first joints 114 to obtain the second block.

[0216] S203. Using the remaining four of the twelve first beam components 112, the four corners of the first frame and the four corners of the second frame are connected one-to-one through the four first beam components 112 to obtain a cube-shaped frame 11.

[0217] It should be noted that the frame manufacturing method of this embodiment uses the first beam assembly 112 of the above embodiments, and therefore has at least the beneficial effects of the first beam assembly 112 in the above embodiments, which will not be repeated here.

[0218] Another embodiment of this application provides an energy storage system 400, including a power conversion device 401 and an energy storage device 100 as described in the above embodiments, wherein the power conversion device 401 is electrically connected between the power generation device 402 and the energy storage device 100.

[0219] Referring to Figure 16, the energy storage system 400 may include a power converter system (PCS) 401 and one or more of the aforementioned energy storage devices 100. The power converter system 401 is connected between the power generation device 402 and the energy storage devices 100. The power generation device 402 generates electrical energy, which can be stored in the energy storage device 100 through the power converter system 401. As an example, the power generation device 402 may be, but is not limited to, solar panels, hydroelectric power generation equipment, thermal power generation equipment, wind power generation equipment, etc. The energy storage system 400 provided in this embodiment can be any power system that requires the use of energy storage devices 100.

[0220] Another embodiment of this application provides a charging network 300, including a charging pile 301 and an energy storage device 100 as described in the above embodiments or an energy storage system 400 as described in the above embodiments, wherein the energy storage device 100 is used to provide electrical energy to the charging pile 301.

[0221] Referring to Figure 17, the charging pile 301 is electrically connected to the battery device 200 in the energy storage device 100 via a cable. The battery device 200 can supply its stored electrical energy to the charging pile 301. The charging pile 301 has one or more connectors 302 for connecting to electrical equipment (such as vehicles) to replenish energy to the equipment. The energy storage device 100 can be located inside the charging pile 301 (e.g., an integrated charging and energy storage unit) or outside the charging pile 301.

[0222] In some embodiments, the charging network 300 may include a charging pile 301 and an energy storage system 400. The charging pile 301 is electrically connected to the energy storage system 400, which provides electrical energy to the charging pile 301. The charging pile 301 is electrically connected to a battery device 200 in the energy storage system 400 via a cable, and the battery device 200 can provide its stored electrical energy to the charging pile 301.

[0223] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0224] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. 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, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A frame, characterized in that, The frame comprises a plurality of beam assemblies, the beam assemblies are connected to each other to form the frame, wherein at least part of the beam assemblies are first beam assemblies, and the first beam assembly comprises: a first beam having two opposite connection ends; a first joint having a first connection part and a second connection part, the first connection part is used for connecting with the connection end of the first beam, and the second connection part is used for connecting the first joints with each other; wherein at least one connection end of the first beam is connected with the first joint through the first connection part, and the adjacent first beam assemblies are connected through the corresponding second connection parts.

2. The frame of claim 1, wherein, In one first beam assembly, the outer surface of the first beam and the outer surface of the corresponding first joint are continuous surfaces; and / or the outer surfaces of the two first joints connected with each other are continuous surfaces.

3. Frame according to claim 1 or 2, characterized in that In one first beam assembly, the first joint is sealingly connected with the corresponding first beam; and / or the two first joints connected with each other are sealingly connected.

4. Frame according to any one of claims 1-3, characterized in that The first joint has a joint connection end, the end face shape of the joint connection end is matched with the cross-sectional shape of the first beam, the first connection part comprises a plug protruding from the end face of the joint connection end, and the plug is matched with the first beam for plug-in connection.

5. The frame of claim 4, wherein, The joint connection end is welded with the first beam.

6. Frame according to any one of claims 1-5, characterized in that The second connection part comprises a first sub-portion and a second sub-portion, in the two first beam assemblies connected with each other, the first sub-portion of one first joint is connected with the second sub-portion of another first joint.

7. The frame of claim 6, wherein, The first sub-portion is recessed with a sink from the outer surface thereof, in the two first beam assemblies connected with each other, at least part of the second sub-portion of one first joint is embedded into the sink of another first joint, so that the outer surfaces of the first sub-portion and the second sub-portion connected with each other are flush.

8. Frame according to claim 6 or 7, characterized in that The sink is provided with a first connecting hole, the second sub-portion is provided with a second connecting hole, and the first connecting hole and the second connecting hole are used for cooperating with a connecting piece to connect the first sub-portion and the second sub-portion.

9. Frame according to any one of claims 6 to 8, characterized in that The second connection part further has a first wedge surface and a second wedge surface, in the two first joints connected with each other, the first wedge surface of one first joint abuts against the second wedge surface of another first joint, so that the two adjacent first beam assemblies are connected at a first preset angle.

10. The frame of claim 9, wherein, The frame comprises three first beam assemblies connected with each other through the first joints, in the three first joints connected with each other, the first wedge surface of one first joint abuts against the first wedge surface of another first joint.

11. The frame of claim 10, wherein, In one first joint, the plane where the first wedge surface is located and the plane where the second wedge surface is located have a first included angle, and the first included angle is an angle of 120°.

12. Frame according to claim 10 or 11, characterized in that In one first joint, the first wedge surface and the second wedge surface intersect at a first edge, and in the three first joints connected with each other, the corresponding three first edges are parallel and abut against each other.

13. The frame of claim 12, wherein, In one of the first connectors, the first wedge surface intersects with the outer surface of the first connector at a second edge, and the second wedge surface intersects with the outer surface of the first connector at a third edge; in three of the first connectors connected to each other, the adjacent second edge and the third edge are sealingly connected.

14. The frame of claim 13, wherein, In one of the first connectors, the first wedge surface is provided with a groove, and the second wedge surface is provided with a protrusion; two ends of the groove respectively pass through the first edge and the second edge, and two ends of the protrusion respectively extend to the first edge and the third edge; the groove and the protrusion are connected at the first edge; in three of the first connectors connected to each other, the protrusion of one of the first connectors is sealingly connected with the groove of another of the first connectors.

15. Frame according to claim 13 or 14, characterized in that The first connector further has a fourth edge and a fifth edge arranged oppositely, the fourth edge is connected with the second edge, and the fifth edge is connected with the third edge. In one of the first beam assemblies, the fourth edge is flushly connected with one side edge of the first beam, and the fifth edge is flushly connected with the opposite side edge of the first beam. In two of the first connectors connected to each other, the adjacent fourth edge and the fifth edge are flushly connected.

16. The frame of claim 15, wherein, The fourth edge and the fifth edge are both concave arc edges, and the sum of the arc of the fourth edge and the arc of the fifth edge is equal to the first preset angle.

17. The frame of claim 15 or 16, wherein, The first preset angle is a right angle, and the arc of the fourth edge and the arc of the fifth edge are both 45°.

18. The frame of any one of claims 1 to 17, wherein, The frame includes twelve first beam assemblies, and the first beam of each first beam assembly is connected with a first connector at opposite ends, and twelve first beam assemblies are connected to each other through the first connectors to form the frame.

19. A joint assembly characterized by, The first connector includes a first connecting part and a second connecting part, the first connecting part is used for connecting with the connecting end of the first beam, and the second connecting part is used for connecting two first connectors to each other. The second connecting part includes a first sub-part and a second sub-part, the first sub-part of one first connector is connected with the second sub-part of another first connector to connect two first connectors.

20. The fitting assembly of claim 19, wherein, The first connector has a connector connecting end used for abutting with the end surface of the first beam, and the first connecting part includes a plug protruding from the end surface of the connector connecting end, and the plug is used for plug-in connection with the first beam.

21. A joint assembly as claimed in claim 19 or 20, wherein, The first sub-part is recessed with a sunken platform from the outer surface, and at least part of the second sub-part of one first connector can be embedded into the sunken platform of another first connector, so that the outer surfaces of the first sub-part and the second sub-part connected to each other are flush.

22. A joint assembly as claimed in any of claims 19 to 21, wherein, The sunken platform is provided with a first connecting hole, and the second sub-part is provided with a second connecting hole, and the first connecting hole and the second connecting hole are used for cooperating with a connecting piece to connect the first sub-part and the second sub-part.

23. A joint assembly as claimed in either of claims 19 or 22, wherein, The second connecting part further has a first wedge surface and a second wedge surface, and the first wedge surface of one of the two first joints is in abutment with the second wedge surface of the other first joint, so that the two first beams connected to the first connecting part of the two first joints can be connected at a first preset angle.

24. The joint assembly of claim 23, wherein, The joint assembly comprises three first joints capable of being connected to each other, and the first wedge surface of one of the two adjacent first joints is in abutment with the second wedge surface of the other first joint.

25. The fitting assembly of claim 24, wherein, In one of the first joints, the plane where the first wedge surface is located and the plane where the second wedge surface is located have a first included angle, and the first included angle is 120°.

26. The joint assembly of claim 24 or 25, wherein, In one of the first joints, the first wedge surface and the second wedge surface intersect at a first edge, and the corresponding three first edges of the three first joints connected to each other are parallel and in abutment.

27. The joint assembly of claim 26, wherein, In one of the first joints, the first wedge surface intersects with the outer surface of the first joint at a second edge, and the second wedge surface intersects with the outer surface of the first joint at a third edge, and the adjacent second edges and third edges of the three first joints connected to each other are sealingly connected.

28. The joint assembly of claim 27, wherein, In one of the first joints, the first wedge surface is provided with a groove, and the second wedge surface is provided with a protrusion, two ends of the groove respectively pass through the first edge and the second edge, two ends of the protrusion respectively extend to the first edge and the third edge, and the groove and the protrusion are connected at the first edge; the protrusion of one of the first joints is sealingly connected with the groove of the other first joint.

29. A joint assembly as claimed in claim 27 or 28, wherein, The first joint further has a fourth edge and a fifth edge arranged oppositely, the fourth edge is connected with the second edge, the fifth edge is connected with the third edge, the fourth edge and the fifth edge are both concave arc edges, and the sum of the arc of the fourth edge and the arc of the fifth edge is equal to the first preset angle.

30. The fitting assembly of claim 29, wherein, The arc of the fourth edge and the arc of the fifth edge are both 45°.

31. A method of making a frame, comprising: The method comprises: A plurality of the first beams and a plurality of the first joints according to any one of claims 1-17 are used, one of the first joints is connected to each of the opposite ends of each of the first beams, and a plurality of the first beam assemblies are obtained. Twelve of the first beam assemblies are connected to each other through the first joints, and the frame is obtained.

32. The frame fabrication method of claim 31, wherein, Before the twelve first beam assemblies are connected to each other through the first joints, the surface of each of the first beam assemblies is treated.

33. The frame fabrication method of claim 32, wherein, Before the surface of each of the first beam assemblies is treated, the connecting holes on the second connecting part for connecting each other in each of the first joints are blocked.

34. An energy storage device comprising a housing and one or more battery clusters disposed within the housing, wherein, The box comprises at least one frame according to any one of claims 1-18, and / or the box comprises at least one frame obtained by using the frame manufacturing method according to any one of claims 31-33.

35. An energy storage system, comprising: The power conversion device is used to electrically connect the power generation device and the energy storage device.

36. A charging network characterized by, including a charging post and the energy storage device of claim 34 or the energy storage system of claim 35, the energy storage device for providing electrical energy to the charging post.

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