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

Abstract

Provided in the 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 composed of a plurality of connecting beams, wherein the connecting beams include first beams and second beams; each of the first beams comprises a plurality of beam sub-segments and a first connector, by means of which every two adjacent beam sub-segments are connected; the second beams are connected to second connectors; and the second beams are connected to middle positions of the first beams by means of the connection between the second connectors and the first connectors. In the process of designing a frame, the second beams can be flexibly added at different positions of the first beams on the basis of space layout, force transmission requirements, etc., which greatly increases both the flexibility of the structural design of the frame and operational flexibility during assembly. For some areas where a support structure needs to be arranged in an internal space or where a force transmission direction needs to be changed, a frame structure that meets requirements can be constructed by means of the connection and cooperation between the first beams and the second beams. This enables the frame to achieve a more flexible structural design, and makes assembly operations simpler and more efficient.

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. As the main supporting structure of the enclosure, the frame provides the basic shape and outline of the enclosure and plays an important role in maintaining the shape of the enclosure and enhancing the overall strength and stability of the enclosure. Therefore, how to enhance the structural strength and stability of the frame to enhance the structural strength and stability of the enclosure is one of the issues that need to be addressed when using energy storage devices in practice.

[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 structural strength and structural stability of frames in related technologies.

[0006] Firstly, embodiments of this application provide a framework, including:

[0007] Multiple connecting beams are interconnected to form a frame; among which

[0008] A portion of the multiple connecting beams is a first beam and another portion is a second beam. The first beam includes multiple beam segments and a first joint connecting adjacent beam segments. At least one end of the second beam is connected to a second joint.

[0009] The first joint has a first connecting portion, and the second joint has a second connecting portion, which is connected to the first connecting portion so that the second beam is connected to the middle of the first beam.

[0010] The frame in this embodiment comprises multiple connecting beams, including a first beam and a second beam. The first beam includes multiple beam segments and a first joint. Adjacent beam segments are connected via the first joint. The second beam can be connected to a second joint, and then to a first joint via the second joint, thereby connecting the second beam to the middle position of the first beam. The connection between the first and second joints allows the second beam to be connected to the middle of the first beam. During frame design, second beams can be flexibly added at different positions of the first beam according to actual needs, such as specific spatial layouts and force transmission requirements, greatly increasing the flexibility of the frame's structural design and assembly operations. For example, when the frame is long in a certain direction, the longer beam can use the first beam, and by connecting the second beam at the middle of the first beam as support, the force transmission path of the longer beam is changed, improving its bending resistance. Alternatively, when it is necessary to divide the internal space of the frame, multiple first beams and second beams can be used to connect multiple second beams between the multiple first beams to achieve spatial division of the frame. Thus, for areas that require special support structures in the internal space or require changes in the direction of force transmission, a frame structure that meets the requirements can be easily constructed by connecting the first beam and the second beam. The frame structure design is more flexible, and the assembly operation is simpler and more efficient, which helps to improve the structural strength and stability of the frame.

[0011] In some embodiments, the outer surfaces of two adjacent beam segments are connected by the outer surface of the first joint to form a continuous surface.

[0012] By adopting the technical solution of this embodiment, the beam segment and the first joint are seamlessly and smoothly connected at the connection position. After the connection, the outer surface of the beam segment and the outer surface of the first joint form a seamless and smooth transition surface. Multiple beam segments are connected through the first joint, so that the outer surface of the first beam is in a basically continuous extension state. In this way, there are no connection gaps on the outer surface of the first beam, the overall structure of the first beam is more beautiful and neat, and there is no stress change at the connection position between the beam segment and the first joint. Force can be transmitted more evenly and smoothly between the beam segment and the first joint, and the overall mechanical performance of the first beam is improved. In addition, when the first beam 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.

[0013] In some embodiments, the outer surface of the second beam and the outer surface of the second joint are continuous surfaces.

[0014] By adopting the technical solution of this embodiment, the second beam and the second joint are seamlessly and smoothly connected at the connection position, so that the outer surfaces of the second beam and the second joint form a seamless and smooth transition surface after connection. The outer surfaces of the second beam and the second joint are basically continuous. Thus, there are no connection gaps between the outer surfaces of the second joint and the second beam, and there is no stress change at the connection position. Force can be transmitted more evenly and smoothly between the second beam and the second joint, so that the force can be distributed and transmitted more naturally along the continuous outer surface of the structure. In addition, when the connection structure of the second beam and the second joint needs to be surface treated, the design of the continuous surface can also improve the continuity, uniformity and consistency of the surface treatment.

[0015] In some embodiments, the outer surfaces of the interconnected first connector and the second connector are continuous surfaces.

[0016] By adopting the technical solution of this embodiment, after the first joint and the second joint are connected, the outer surfaces of the first joint and the second joint also form a continuous surface. The two are seamlessly and smoothly connected at the connection point, resulting in a seamless and smooth transition surface between the outer surfaces of the interconnected first and second joints. Thus, there are no connection gaps between the outer surfaces of the interconnected first and second joints, and similarly, there are no connection gaps between the first beam and the second beam connected by the first and second joints. Force can be transmitted evenly and smoothly between the first and second beams, thereby helping to improve the overall uniformity of the stress on the frame. At the same time, the connection of the outer surfaces of the first beam and the second beam through the first and second joints to form a continuous surface also improves the uniformity and consistency of the overall surface treatment of the frame.

[0017] In some embodiments, each beam segment is sealed to its corresponding first joint.

[0018] By adopting the technical solution of this embodiment, the beam segment and the first joint are sealed together, and there is no gap between them at the connection position. This can prevent solid particles, liquids or gases from entering the interior of the first beam 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 structure through the connection position between the beam segment and the first joint, thereby effectively maintaining the internal environment.

[0019] In some embodiments, the second beam is sealed to the second joint.

[0020] By adopting the technical solution of this embodiment, the second beam and the second joint are sealed together, and there is no gap between them at the connection position, thereby preventing external solid particles, liquids or gases from entering the interior of the second beam or the second joint through the connection position.

[0021] In some embodiments, the first and second connectors are sealed together.

[0022] By adopting the technical solution of this embodiment, the first joint and the second joint are sealed together, and the internal and external spaces of the box and other structures cannot exchange materials through the connection position, which helps to improve the stability of the internal space of the box and other structures.

[0023] In some embodiments, the first connector has two first connecting ends disposed opposite to each other. The end face shape of the first connecting end is adapted to the cross-sectional shape of the corresponding beam segment. The two first connecting ends are respectively provided with first plugs, and the two first plugs are respectively adapted to be inserted into two adjacent beam segments.

[0024] By adopting the technical solution of this embodiment, two adjacent beam segments are respectively connected to the two first connecting ends of the first connector and plugged into the corresponding first plug. The shape and size of the two first connecting ends of the first connector are adapted to the cross-sectional shape and size of the corresponding beam segment. After the first connector is inserted into the corresponding beam segment, the end face of the first connecting end can fit and abut against the end face of the corresponding beam segment, so that the connection between the beam segment and the first connector can achieve reliable connection and sealing.

[0025] In some embodiments, the first connection end is welded to the beam segment.

[0026] In some embodiments, the second connector has a second connecting end, the end face shape of which is adapted to the cross-sectional shape of the second beam, and the second connecting end is provided with a second plug, which is adapted to be inserted into the corresponding second beam.

[0027] By adopting the technical solution of this embodiment, the shape and size of the second connecting end of the second connector are adapted to the cross-sectional shape and size of the second beam. After the second connector is inserted into the second beam, the end face of the second connecting end can fit and abut against the end face of the second beam, so that the connection between the second beam and the second connector can achieve reliable connection and sealing.

[0028] In some embodiments, the second connecting end is welded to the second beam.

[0029] In some embodiments, the first connecting portion is provided with a cavity, and the second connecting portion is adapted to be inserted into the cavity.

[0030] By adopting the technical solution of this embodiment, a cavity is provided in the first connecting part, that is, the first connector has a cavity, and the second connecting part of the second connector is adapted to be inserted into the cavity, so that the second connecting part of the second connector can be housed inside the first connector. When the first connector and the second connector are connected, the second connecting part is inserted into the cavity of the first connecting part. The insertion connection operation is simple and quick, which helps to improve the overall assembly efficiency of the frame. After the second connecting part is inserted into the cavity, the second connecting part is housed inside the first connector. The second connecting part has a certain contact area with the first connector through contact with the cavity wall, so that the force can be dispersed and transmitted, and the force can be evenly distributed on the contact surface. This helps to improve the mechanical properties of the connection position, improve the connection reliability of the first connector and the second connector, and thus improve the load-bearing capacity of the entire frame.

[0031] In some embodiments, the cavity wall is provided with a first connecting hole, and the second connecting 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 connecting part and the second connecting part.

[0032] By adopting the technical solution of this embodiment, a first connecting hole and a second connecting hole are respectively provided in the cavity wall and the second connecting part. When the first connector and the second connector are connected, they can not only be positioned through the cavity, but also be connected with the connector through the first connecting hole and the second connecting hole, thereby further improving the reliability and stability of the connection.

[0033] In some embodiments, the cavity has a first inner wall surface that is angled to the length direction of the corresponding first beam, and the second connecting portion has a first side surface that is parallel to the length direction of the corresponding second beam. In the first connector and the second connector that are connected to each other, the first inner wall surface abuts against the first side surface.

[0034] By adopting the technical solution of this embodiment, the first inner wall surface of the cavity is set at an angle to the length direction of the first beam. When the second connecting part is inserted into the cavity, the first side surface of the second connecting part fits and abuts against the first inner wall surface. By designing the first inner wall surface to have different angles with the length direction of the first beam, the first beam and the second beam can have different angles. In this way, the first beam and the second beam can form a specific spatial angle relationship according to the design requirements, thereby constructing a frame with a specific geometric shape.

[0035] In some embodiments, the cavity has two first inner wall surfaces spaced apart along the length direction of the corresponding first beam, and the second connecting portion has two first side surfaces disposed opposite to each other. In the first connector and the second connector that are connected to each other, the second connecting portion is sandwiched between the two first inner wall surfaces.

[0036] By adopting the technical solution of this embodiment, when the second connecting part is inserted into the cavity, the second connecting part is clamped between the two second inner wall surfaces. The two first sides of the second connecting part are respectively attached and abutted against the corresponding first inner wall surfaces. In the direction perpendicular to the length direction of the first beam, the two first inner wall surfaces can also limit the movement of the second connecting part, thereby further improving the insertion strength of the second connecting part.

[0037] In some embodiments, the cavity further has a second inner wall surface connected between the two first inner wall surfaces, the second connecting portion has a second side surface connected between the two first side surfaces, the first beam has an outer plane parallel to its length direction, the second inner wall surface is set at an angle to the outer plane, and in the first connector and the second connector that are connected to each other, the second inner wall surface abuts against the second side surface.

[0038] By adopting the technical solution of this embodiment, the second inner wall surface in the cavity is connected between the two first inner wall surfaces. The second inner wall surface and the first inner wall surface enclose the internal space of the cavity. The second inner wall surface has an angle with the outer plane of the first connector. When the second connecting part is inserted into the cavity, the second side of the second connecting part fits and abuts against the second inner wall surface. By designing the second inner wall surface to have different angles with the outer plane of the first connector, the outer planes of the second beam and the first beam can have different angles.

[0039] In some embodiments, the second connecting portions of the two second connectors are connected to connect the two second beams, and the two interconnected second connecting portions are fitted into the cavity so that the two second beams are integrally connected to the middle of a first beam.

[0040] By adopting the technical solution of this embodiment, the two second beams are connected to each other through their respective second joints to form an integral structure. The two interconnected second joints can be inserted into the cavity of the first joint as a whole, thereby connecting the two second beams to the same middle position of the first beam at the same time. In this way, when additional support is needed for the middle of the first beam, the connection structure of the two second beams can effectively distribute and transfer the force in the middle of the first beam to the two second beams, thereby strengthening the support effect on the first beam.

[0041] In some embodiments, the second connecting portion further has a positioning wedge surface, and in the two interconnected second joints, the two positioning wedge surfaces abut against each other to connect the two second beams at a first preset angle.

[0042] By adopting the technical solution of this embodiment, when the two second joints are connected, the positioning wedge surface of one second joint abuts against the positioning wedge surface of the other second joint. The friction of the wedge surfaces and their mutual support can effectively resist external forces and reduce the risk of angular displacement between the two connected second beams. 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 positioning wedge surfaces to be fitted together. The angle positioning structure is simple and the connection operation is convenient, which helps to improve the assembly efficiency of the frame.

[0043] In some embodiments, the plane containing the positioning wedge has a positioning angle with the length direction of the corresponding second beam, and the sum of the two positioning angles of the two interconnected second joints is equal to the first preset angle.

[0044] By adopting the technical solution of this embodiment, the positioning wedge surface is a plane that is inclined relative to the length direction of the second beam. The positioning wedge surface and the length direction of the corresponding second beam have a positioning angle. In the two second joints that are connected to each other, the sum of the angles of the two positioning angles is equal to the connection angle between the two second beams (i.e., the first preset angle). In this way, after the two second beams are connected by the two second joints, the corresponding angle between the two second beams is the first preset angle.

[0045] In some embodiments, the first preset angle is a right angle and the positioning angle is a 45° angle.

[0046] By adopting the technical solution of this embodiment, the included angle of the positioning of the two first joints is 45 degrees, and the connection of the two first joints can make the two second beams vertically connected.

[0047] In some embodiments, the second connection portion includes a first sub-portion and a second sub-portion, and in two interconnected second connectors, the first sub-portion of one second connector is connected to the second sub-portion of the other second connector.

[0048] By adopting the technical solution of this embodiment, the second connecting part serves as the connecting part for connecting two second connectors. It includes a first sub-part and a second sub-part. When the two second connectors are connected, the first sub-part of one second connector can be arbitrarily connected to the second sub-part of the other second connector. The two connected second connectors can have the same structure and size. Any two second connectors can be connected without providing male and female parts for structural adaptation. This allows the second connector to serve as a standard connector for the mutual connection between any two second beams. The second connector has good versatility and practicality.

[0049] In some embodiments, the first sub-part has a recessed platform on its outer surface, and in two interconnected second connectors, at least a portion of the second sub-part of one second connector is embedded in the recessed platform of the other second connector, so that the outer surfaces of the interconnected first sub-part and the outer surfaces of the second sub-part are flush.

[0050] By adopting the technical solution of this embodiment, on the same second 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 second 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 second 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 second connectors. In addition, at least a portion of the second sub-part is embedded into the recessed platform, and the outer surfaces of the interconnected first sub-part and the second sub-part are flush. The outer surfaces of the two interconnected parts are smoothly connected without gaps or misalignment. The two interconnected second connecting parts have flush outer surfaces, which allows them to better fit and insert into the cavity of the first connector and tightly abut against the cavity wall.

[0051] In some embodiments, the recessed platform is provided with a third connecting hole, and the second sub-part is provided with a fourth connecting hole. The third connecting hole and the fourth connecting hole are used to cooperate with the connector to connect the first sub-part and the second sub-part.

[0052] By adopting the technical solution of this embodiment, a third connecting hole and a fourth connecting hole are respectively provided in the sinking platform and the second sub-part. When the two second joints are connected, a connector adapted to the third connecting hole and the fourth connecting hole can be used for connection. The sinking platform and the second sub-part, i.e. the two second joints, are connected by the connector. The connection structure is simple and the operation is convenient.

[0053] In some embodiments, the cavity has a second inner wall surface and a third inner wall surface that are continuously disposed thereon, the second connecting portion has a second side surface, and in the two second connectors and a first connector that are connected to each other, the second side surface of one second connector abuts against the second inner wall surface, and the second side surface of the other second connector abuts against the third inner wall surface.

[0054] By adopting the technical solution of this embodiment, when the two second connectors are connected, the two interconnected second connecting parts can fit and abut against the second inner wall surface and the third inner wall surface, so that the two connected second connectors can be more stably and reliably inserted into the first connector.

[0055] In some embodiments, the second inner wall surface is provided with a protrusion that extends from the second inner wall surface to the third inner wall surface, and the opposite ends of the protrusion extend outward from the opposite sides of the cavity to connect with the outer surface of the second connector; the second side surface is provided with a groove, and in the two interconnected second connectors, one end of the two grooves is connected, and the other end of the two grooves extends to connect with the outer surface of the corresponding second connector; in the two interconnected second connectors and the first second connector, the protrusion and the two grooves are sealed and engaged.

[0056] By adopting the technical solution of this embodiment, a groove and a protrusion are provided between the second side of the second connecting part and the second inner wall or third inner wall of the cavity that abuts thereto, which are adapted to engage. The convex and concave structure can increase the misalignment shear strength between the two abutting surfaces, thereby improving the connection strength. On this basis, the protrusion extends from the second inner wall to the third inner wall, and the opposite ends extend from the opposite sides of the first connector to the outer surface of the first connector. After the two second connectors are connected, the adjacent ends of the two grooves are connected and the opposite ends extend to the outer surface of the corresponding second connector. Thus, when the two second connectors are connected and then connected to the first connector, the mutually engaging groove and protrusion structure extends from one side of the outer surface of the first connector to the opposite side, and the two are sealed together, so that the two second connectors can achieve a sealed connection with the first connector.

[0057] In some embodiments, the frame has at least two parallel first beams and at least one second beam, with a second joint connected to each of the opposite ends of the at least one second beam, and the two second joints connected to the same second beam are connected to the two first joints of the two parallel first beams.

[0058] By adopting the technical solution of this embodiment, the second joints at both ends of the second beam are connected to the two first joints provided on the two parallel first beams, thereby connecting a second beam between the two parallel first beams. The second beam can be used to support the two first beams connected to it, and at the same time, the second beam can also separate the area between the two first beams.

[0059] In some embodiments, the framework includes:

[0060] The outer frame is a cube-shaped frame formed by twelve connecting beams, wherein the four parallel connecting beams of the outer frame are the first beams; and

[0061] The partition frame is connected to the middle of the outer frame. The partition frame is a square frame formed by connecting four second beams end to end through second joints. The second joints at the four corners of the partition frame are connected one-to-one with the second joints of the four parallel first beams of the outer frame.

[0062] By adopting the technical solution of this embodiment, the four parallel connecting beams of the outer frame are set as the first beams, and the four second beams are connected end to end by the second joints to form a partition frame. The second joints at the four corners of the partition frame are connected one-to-one with the four first joints of the four parallel first beams. Thus, the partition frame can be inserted into the cube-shaped outer frame. Each second beam that makes up the partition frame can not only effectively support the first beam connected to it, but the partition frame as a whole can also effectively divide the internal space of the outer frame.

[0063] In some embodiments, the frame includes a plurality of partition frames that are connected to the outer frame in parallel with spacing between them.

[0064] By adopting the technical solution of this embodiment, multiple partition frames are set in the outer frame to divide the internal space of the outer frame into more areas. Furthermore, the multiple second beams of the multiple partition frames can also provide multi-point support to the first beam connected to them, thereby improving the overall structural strength and stability of the frame.

[0065] Secondly, embodiments of this application also provide a connector assembly, including:

[0066] The first joint, with its two opposite ends, is used to connect to a beam segment.

[0067] The second connector is used to connect to the second beam.

[0068] The first joint has a first connecting part, and the second joint has a second connecting part. The second connecting part is connected to the first connecting part so as to connect the second beam connected with the second joint to the two beam segments connected by the first joint.

[0069] Thirdly, embodiments of this application also provide a framework fabrication method, including:

[0070] At least two beam segments are connected using the first joint in the above embodiment to obtain the first beam with the first joint;

[0071] The outer frame is formed by connecting beams in the above embodiments to form a cube shape, and in the outer frame, at least two first beams with first joints are arranged in parallel.

[0072] Using the second beam in the above embodiment, and connecting a second connector to each of the opposite ends of the second beam, a second beam with a second connector is obtained;

[0073] Using at least one second beam, the second joints at opposite ends of the second beam are connected to the two first joints of the two parallel first beams of the outer frame, so as to connect the second beam between the two parallel first beams of the outer frame.

[0074] Fourthly, embodiments of this application also provide another method for creating a framework, including:

[0075] At least two beam segments are connected using the first joint in the above embodiment to obtain a first beam with the first joint;

[0076] The outer frame is formed by connecting beams in the above embodiments to form a cube shape, and in the outer frame, at least four first beams with first joints are arranged in parallel.

[0077] Using the second beam in the above embodiment, and connecting a second connector to each of the opposite ends of the second beam, a second beam with a second connector is obtained;

[0078] Use four second beams and connect the four second beams end to end through the second joint to obtain a square-shaped dividing frame;

[0079] The second joints at the four corners of the partition frame are connected one by one to the four first joints of the four parallel first beams of the outer frame, so as to connect the partition frame to the middle of the outer frame.

[0080] Fifthly, embodiments of this application also provide 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 forming method provided in the above embodiments.

[0081] Sixthly, 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.

[0082] In a seventh aspect, 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.

[0083] 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

[0084] 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.

[0085] Figure 1 is a schematic diagram of the structure of an energy storage device provided in some embodiments of this application;

[0086] Figure 2 is a schematic diagram of the framework provided in some embodiments of this application;

[0087] Figure 3 is a partial structural schematic diagram of a frame provided in some embodiments of this application when a second beam is connected between two parallel first beams;

[0088] Figure 4 is a partial enlarged view of the structure shown in Figure 3;

[0089] Figure 5 is an exploded view of the structure shown in Figure 4;

[0090] Figure 6 is a partial structural schematic diagram of a frame provided in some embodiments of this application when two second beams are connected to a first beam at the same time.

[0091] Figure 7 is an exploded view of the structure shown in Figure 6;

[0092] Figure 8 is a structural schematic diagram of the first beam of the frame shown in Figure 2;

[0093] Figure 9 is a structural schematic diagram of the second beam of the frame shown in Figure 3, which is connected to the second joint.

[0094] Figure 10 is a schematic diagram of the connector assembly provided in some embodiments of this application;

[0095] Figure 11 is a structural schematic diagram of the first connector of the connector assembly shown in Figure 10;

[0096] Figure 12 is another perspective view of the first connector shown in Figure 11;

[0097] Figure 13 is a schematic diagram of the structure of the second connector of the connector assembly shown in Figure 10;

[0098] Figure 14 is another perspective view of the second connector shown in Figure 13;

[0099] Figure 15 is a structural schematic diagram of the framework provided in some other embodiments of this application;

[0100] Figure 16 is a flowchart of a framework fabrication method provided in some embodiments of this application;

[0101] Figure 17 is a flowchart of a framework fabrication method provided in some other embodiments of this application;

[0102] Figure 18 is a flowchart of a framework fabrication method provided in some embodiments of this application;

[0103] Figure 19 is a schematic diagram of the energy storage system provided in some embodiments of this application;

[0104] Figure 20 is a schematic diagram of the structure of a charging network provided in some embodiments of this application.

[0105] The main markings in the attached figures are as follows:

[0106] 10. Box body;

[0107] 11. Frame; 12. Panel; 101. Outer frame; 1001. Divider frame; 1002. Connector;

[0108] 13. Connecting beam; 131. First beam; 1311. Outer plane; 132. Second beam; 133. Beam segment;

[0109] 134. First connector; 1341. First connecting part; 13411. Cavity; 13412. First connecting hole; 13413. Protrusion; 1341a. First inner wall surface; 1341b. Second inner wall surface; 1341c. Third inner wall surface; 1342. First connecting end; 1343. First plug;

[0110] 135. Second connector; 1351. Second connecting part; 13511. Second connecting hole; 13512. First sub-part; 13513. Second sub-part; 13514. Countersunk platform; 13515. Third connecting hole; 13516. Fourth connecting hole; 13517. Groove; 1351a. First side surface; 1351b. Second side surface; 1351c. Positioning wedge surface; 1352. Second connecting end; 1353. Second plug;

[0111] 100. Energy storage devices;

[0112] 200. Battery device;

[0113] 300. Charging network; 301. Charging station; 302. Connector;

[0114] 400. Energy storage system; 401. Power conversion device; 402. Power generation device. Detailed Implementation

[0115] 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 20 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0120] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] Generally, energy storage devices include a housing, which serves as the outer shell of the energy storage device and provides physical protection for the various modules and equipment inside. The housing of an energy storage device typically 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.

[0130] In related technologies, frames are typically formed by connecting multiple beams in a certain order and according to certain rules. In common cubic-shaped frames, the connecting beams can include vertical beams (also known as columns) and horizontal beams. Vertical beams 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 enclosure and internal equipment to the ground, and also play a crucial role in resisting external vertical pressures (such as the weight of upper equipment, potential snow pressure, etc.). Horizontal beams are components that connect the columns horizontally, connecting them into a unified frame and distributing and transferring loads. Horizontal beams enhance the horizontal stability of the frame, allowing it to maintain structural integrity when subjected to horizontal external forces (such as wind force, lateral impact forces during transport, etc.). In actual production, most frames use simple direct welding or bolt connections to connect the beams at the ends. This connection method makes it difficult to achieve flexible connections of beams in the middle, resulting in inefficient implementation of special design requirements, such as adding supports in the middle of the frame or dividing the internal space of the frame. For example, for box-shaped structures with large length dimensions, some of their connecting beams are longer in one direction (such as the length direction). Because the beams are too long, additional supports are needed. The only way to add connecting beams in the middle is by welding, which is difficult to operate and lacks flexibility.

[0131] Based on this, this application provides a frame in which multiple connecting beams comprising the frame include a first beam and a second beam. The first beam includes multiple beam segments and a first joint. Adjacent beam segments are connected via the first joint. The second beam can be connected to a second joint, and then to a first joint via the second joint, thereby connecting the second beam to the middle position of the first beam. The connection between the first and second joints allows the second beam to be connected to the middle of the first beam. During frame design, second beams can be flexibly added at different positions of the first beam according to actual needs, such as specific spatial layouts and force transmission requirements, greatly increasing the flexibility of the frame's structural design and assembly operations. For example, when the frame is long in a certain direction, the longer beam can use the first beam, and by connecting the second beam at the middle of the first beam as support, the force transmission path of the longer beam is changed, improving its bending resistance. Alternatively, when it is necessary to divide the internal space of the frame, multiple first beams and second beams can be used to connect multiple second beams between the multiple first beams to achieve spatial division of the frame. Thus, for areas that require special support structures in the internal space or require changes in the direction of force transmission, a frame structure that meets the requirements can be easily constructed by connecting the first beam and the second beam. The frame structure design is more flexible, and the assembly operation is simpler and more efficient, which helps to improve the structural strength and stability of the frame.

[0132] 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.

[0133] The following example uses a frame as the skeleton for making the energy storage device's housing to illustrate the use of a frame.

[0134] 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.

[0135] In some embodiments, the energy storage device 100 may be an energy storage cabinet or an energy storage container.

[0136] 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.

[0137] 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.

[0138] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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 for the housing 10. 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 materials with high strength and rigidity, such as steel, and can withstand the weight of the internal equipment as well as various external mechanical stresses. For example, the frame 11 of some energy storage containers is welded from high-strength channel steel, angle steel, and other steel materials to withstand impacts and vibrations. Furthermore, the frame structure, through reasonable design and connection methods, connects the various parts of the container 10 into a whole, thereby improving the overall stability of the container 10. For instance, the container 10 of the energy storage device 100 typically also includes panels, which usually include side panels on the sides of the container 10, a top panel on the top surface of the container 10, and a bottom panel on the bottom surface of the container 10. The side panels, top panel, and bottom panel are connected to the frame 11 to form a whole, thus enclosing and protecting the internal structure of the container 10. Therefore, the frame 11, as an important component of the container 10, plays a crucial role in maintaining the shape of the container 10 and enhancing its overall stability.

[0154] The framework 11 of this application will be described in detail below with reference to Figures 2 to 14 and specific embodiments. The length direction of the first beam is as indicated by the double-headed arrow F1 in the figures, and the length direction of the second beam is as indicated by the double-headed arrow F2 in the figures.

[0155] As shown in Figures 2 to 5, 8, and 9, the frame 11 provided in this embodiment includes a plurality of connecting beams 13, which are interconnected to form the frame 11. A portion of the connecting beams 13 is a first beam 131, and another portion is a second beam 132. The first beam 131 includes a plurality of beam segments 133 and a first joint 134 connecting adjacent beam segments 133. At least one end of the second beam 132 is connected to a second joint 135. The first joint 134 has a first connecting portion 1341, and the second joint 135 has a second connecting portion 1351. The second connecting portion 1351 is connected to the first connecting portion 1341, so that the second beam 132 is connected to the middle of the first beam 131.

[0156] In this embodiment, as shown in Figure 2, the frame 11 includes multiple connecting beams 13. These connecting beams 13 are interconnected to form the frame 11. The connecting beams 13 are the basic structural units of the frame 11; that is, the frame 11 is not a monolithic structure but is assembled from multiple connecting beams 13. These connecting beams 13 are like small parts in a building block, serving as the fundamental elements for constructing the entire frame 11. The multiple connecting beams 13 are interconnected to form the frame 11, for example, using methods such as screw connections, tenon joints, or welding. A connecting beam 13 can be a structure composed of multiple materials or sub-components. For example, a connecting beam 13 may include the beam itself, as well as joints, reinforcing ribs, fillers, etc., used for connection.

[0157] A portion of the connecting beams 13 in the frame 11 is a first beam 131, and another portion is a second beam 132. A portion of the multiple connecting beams 13 constituting the frame 11 is the first beam 131, and the number of first beams 131 can be one or more. The other portion of the multiple connecting beams 13 constituting the frame 11 is the second beam 132, and the number of second beams 132 can also be one or more. The first beams 131 and the second beams 132 can have different structural compositions, different material compositions, or different functional characteristics. The connecting beams 13 can include only the first beams 131 and the second beams 132, or they can also include other types of beams besides the first beams 131 and the second beams 132. In some examples, the connecting beams 13 include the first beams 131, the second beams 132, and other beams, and the first beams 131, the second beams 132, and other types of beams are assembled together to form the frame 11; in other examples, the connecting beams 13 include the first beams 131 and the second beams 132, and the first beams 131 and the second beams 132 are assembled together to form the frame 11.

[0158] For example, as shown in Figure 2, multiple connecting beams 13 are connected to form a cubic frame 11. The multiple connecting beams 13 may include vertical beams (also called columns) and horizontal beams. In this cubic frame 11, part or all of the vertical beams may be first beams 131, and part or all of the horizontal beams may be first beams 131. Furthermore, the connecting beams 13 may also include at least one second beam 132. Two parallel horizontal beams or two parallel vertical beams in the frame 11 are designated as first beams 131, and a second beam 132 can be connected between the two parallel horizontal beams or two parallel vertical beams. The second beam 132 acts as a support beam supporting the two parallel first beams 131. Alternatively, the connecting beams 13 may also include multiple second beams 132, for example, four second beams 132. All four parallel beams in the frame 11 are designated as first beams 131, and the four second beams 132 are respectively connected between pairs of parallel first beams 131.

[0159] In the embodiments of this application, as shown in Figures 3 and 8, the first beam 131 includes multiple beam segments 133 and a first joint 134. That is, the first beam 131 has at least two beam segments 133 and one first joint 134. The beam segments 133 are beam structures and are the main body of the first beam 131. The first joint 134 is a connecting structure for connecting two adjacent beam segments 133. For example, two beam segments 133 are connected by a first joint 134 to form the first beam 131. The first joint 134 is located in the middle of the first beam 131. Alternatively, three or more beam segments 133 are connected by two or more first joints 134 to form the first beam 131. The two or more first joints 134 are spaced apart in the middle of the first beam 131.

[0160] Understandably, beam segment 133 has two oppositely arranged connecting ends. Beam segment 133 can be a strip-shaped or rod-shaped structure with a certain extension length along a certain direction. The two opposite ends of beam segment 133 along the length direction form two connecting ends, and the two adjacent connecting ends of two adjacent beam segments 133 are connected to the same first joint 134. The first joint 134 can be connected to the connecting ends of beam segment 133 by welding, screwing, or snap-fitting.

[0161] In this embodiment of the application, as shown in Figures 2, 3, and 9, at least one end of the second beam 132 is connected to a second connector 135. The second beam 132 can also be a strip-shaped or rod-shaped structure with a certain extension length along a certain direction. Two connecting ends are formed at opposite ends of the second beam 132 along its length direction. One of the two connecting ends is connected to a second connector 135, or each of the two connecting ends is connected to a second connector 135. For example, when one end of the second beam 132 is connected to the first beam 131, a second connector 135 is connected to one connecting end of the second beam 132. When both ends of the second beam 132 are connected to two first beams 131 respectively, a second connector 135 is connected to each of the two connecting ends of the second beam 132. The second connector 135 can be connected to the connecting end of the beam segment 133 by welding, screwing, or snap-fitting.

[0162] In this embodiment of the application, as shown in Figures 4, 5, 8, and 9, the first connector 134 further includes a first connecting portion 1341, and the second connector 135 further includes a second connecting portion 1351. The first connecting portion 1341 and the second connecting portion 1351 are used to cooperate and connect to each other, thereby connecting the first connector 134 and the second connector 135 to the corresponding second beam 132 and the first beam 131. The first connector 134 is located at the middle of the first beam 131, and the second connector 135 is located at the middle of the first beam 131 and connects to the first connector 134, thereby connecting the second beam 132 to the middle of the first beam 131. The first connecting portion 1341 and the second connecting portion 1351 can be connected to each other by welding, screwing, or snap-fitting.

[0163] The frame 11 of this application embodiment includes a plurality of connecting beams 13 comprising a first beam 131 and a second beam 132. The first beam 131 includes a plurality of beam segments 133 and a first joint 134. Two adjacent beam segments 133 are connected by the first joint 134. The second beam 132 can be connected to a second joint 135 and then connected to the first joint 134 through the second joint 135, thereby connecting the second beam 132 to the middle position of the first beam 131. The second beam 132 can be connected to the middle of the first beam 131 by the connection of the first joint 134 and the second joint 135. During the design of the frame 11, the second beam 132 can be flexibly added at different positions of the first beam 131 according to actual needs, such as specific spatial layout and force transmission requirements, which greatly increases the flexibility of the structural design and assembly of the frame 11. For example, when the frame 11 is long in a certain direction, the longer beam can use the first beam 131 and connect the second beam 132 in the middle of the first beam 131 as a support, thereby changing the force transmission path of the longer beam and improving the bending resistance of the longer beam. Alternatively, when it is necessary to divide the internal space of the frame 11, multiple first beams 131 and second beams 132 can be set up to connect multiple second beams 132 between multiple first beams 131 to achieve spatial division of the frame 11. Thus, for areas that require special support structures in the internal space or require changes in the direction of force transmission, a frame structure that meets the requirements can be easily constructed by connecting the first beam 131 and the second beam 132. The frame structure design is more flexible, and the assembly operation is simpler and more efficient, which helps to improve the structural strength and stability of the frame 11.

[0164] In some embodiments, as shown in Figures 3, 4 and 8, the outer surfaces of two adjacent beam segments 133 are connected by the outer surface of the first joint 134 to form a continuous surface.

[0165] Understandably, in the frame 11, multiple connecting beams 13 are interconnected and define an internal space. When the first beam 131 is part of the frame 11, the surfaces of each beam segment 133 that make up the first beam 131 that are located or facing the internal space are the inner surfaces of the beam segments 133. Correspondingly, the surfaces of the beam segments 133 that are away from the internal space, i.e., located outside the internal space, are the outer surfaces of the beam segments 133. When the first joint 134 is part of the first beam 131 that makes up the frame 11, the surface of the first joint 134 that is located or facing the internal space is the inner surface of the first joint 134. Correspondingly, the surface of the first joint 134 that is away from the internal space, i.e. located outside the internal space, is the outer surface of the first joint 134.

[0166] In each of the first beams 131, the outer surface of the beam segment 133 and the outer surface of the corresponding first joint 134 are continuous surfaces. From a geometric perspective, there are no obvious steps, gaps or abrupt changes at the connection between the outer surface of the beam segment 133 and the outer surface of the first joint 134, so that the outer surface of the entire first beam 131 roughly forms a basically continuous and extended surface.

[0167] Thus, in this embodiment, the beam segment 133 and the first joint 134 are seamlessly and smoothly connected at the connection point. The outer surfaces of the beam segment 133 and the first joint 134 form a seamless and smooth transition surface after connection. Multiple beam segments 133 are connected through the first joint 134, making the outer surface of the first beam 131 extend in a basically continuous manner. There are no connection gaps on the outer surface of the first beam 131, making the overall structure of the first beam 131 more aesthetically pleasing and neat. Furthermore, there is no stress abrupt change at the connection point between the beam segment 133 and the first joint 134, allowing for more uniform and smooth force transmission between the beam segment 133 and the first joint 134, thus improving the overall mechanical properties of the first beam 131. In addition, when the first beam 131 requires surface treatment 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 enhancing the surface protection and decorative effects of the first beam 131.

[0168] In some embodiments, as shown in Figures 3, 4 and 9, the outer surface of the second beam 132 and the outer surface of the second joint 135 are continuous surfaces.

[0169] Wherein, the outer surface of the second beam 132 refers to the surface of the second beam 132 that is outside the internal space of the frame 11 when the second beam 132 is part of the frame 11; the outer surface of the second joint 135 refers to the surface of the second joint 135 that is outside the internal space of the frame 11 when the second joint 135 is connected to the second beam 132 and together with the second beam 132 is part of the frame 11.

[0170] The outer surface of the second beam 132 and the outer surface of the second joint 135 connected to the second beam 132 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 second beam 132 and the second joint 135. The outer surfaces of the second beam 132 and the second joint 135 join together to form a basically continuous and extended surface.

[0171] Thus, the second beam 132 and the second joint 135 are seamlessly and smoothly connected at the connection point. There are no connection gaps between the outer surface of the second joint 135 and the outer surface of the second beam 132. There are no stress abrupt changes at the connection point, and the force can be transmitted more evenly and smoothly between the second beam 132 and the second joint 135, allowing the force to be distributed and transmitted more naturally along the continuous outer surface of the structure. In addition, when the connection structure of the second beam 132 and the second joint 135 needs to be surface treated, the continuous surface design can also improve the continuity, uniformity and consistency of the surface treatment.

[0172] In some embodiments, as shown in Figures 2 to 4, the outer surfaces of the interconnected first joint 134 and the second joint 135 are continuous surfaces, so that the outer surfaces of the interconnected first beam 131 and the second beam 132 form a continuous surface.

[0173] That is, after the first connector 134 and the second connector 135 are connected to each other through the corresponding first connecting part 1341 and the second connecting part 1351, there are no obvious steps, gaps or abrupt changes at the connection position on the outer surface of the first connector 134 and the outer surface of the second connector 135. The outer surfaces of the first connector 134 and the second connector 135 are joined together to form a basically continuous and extended surface.

[0174] Thus, after the first joint 134 and the second joint 135 are connected, the outer surfaces of the first joint 134 and the second joint 135 form a continuous surface. The two are seamlessly and smoothly connected at the connection point, resulting in a seamless and smooth transition between their outer surfaces. Consequently, there are no gaps between the outer surfaces of the first joint 134 and the second joint 135, and similarly, there are no gaps between the first beam 131 and the second beam 132 connected by the first joint 134 and the second joint 135. Force can be transmitted evenly and smoothly between the first beam 131 and the second beam 132, thereby improving the overall uniformity of the stress on the frame 11. Furthermore, the continuous surface formed by the connection of the outer surfaces of the first beam 131 and the second beam 132 through the first joint 134 and the second joint 135 also improves the uniformity and consistency of the overall surface treatment of the frame 11.

[0175] In some embodiments, as shown in Figures 3, 4, and 8, each beam segment 133 is sealed to its corresponding first joint 134. There is no gap between the beam segment 133 and the first joint 134 at the connection point, thereby preventing external solid particles, liquids, or gases from entering the interior of the first beam 131 through the connection point. Furthermore, when the frame 11 is used to manufacture structures such as boxes with high sealing performance requirements, it can effectively prevent the exchange of substances between the inner and outer spaces of the box or similar structure through the connection point between the beam segment 133 and the first joint 134, thus effectively maintaining the internal environment.

[0176] In some embodiments, as shown in Figures 3, 4, and 9, the second beam 132 is sealed to the second connector 135. There is no gap between the second beam and the second connector 135 at the connection point, thereby preventing external solid particles, liquids, or gases from entering the interior of the second beam 132 or the second connector 135 through the connection point.

[0177] In some embodiments, as shown in Figures 2 to 4, the first connector 134 and the second connector 135 are sealed together. There is no gap between the first connector and the second connector 135 at the connection point, and the internal and external spaces of the structure, such as the housing, cannot exchange substances through the connection point between the first connector 134 and the second connector 135, which helps to improve the stability of the internal space of the structure, such as the housing.

[0178] In some embodiments, as shown in Figures 5, 8, 11 and 12, the first connector 134 has two first connecting ends 1342 disposed opposite to each other. The end face shape of the first connecting end 1342 is adapted to the cross-sectional shape of the corresponding beam segment 133. The two first connecting ends 1342 are respectively provided with first plugs 1343, and the two first plugs 1343 are respectively adapted to be inserted into the two adjacent beam segments 133.

[0179] The end face shape of the first connecting end 1342 is adapted to the cross-sectional shape of the corresponding beam segment 133. That is, the shape and size design of the first connector 134 and the corresponding beam segment 133 at the connection part are matched with each other, so that after the first plug 1343 is inserted into the corresponding beam segment 133, the end face of the first connecting end 1342 can fit and abut against the end face of the corresponding beam segment 133. On the basis of achieving a tight connection between the first connector 134 and the corresponding beam segment 133, the outer surface of the beam segment 133 is engaged with the outer surface of the first connector 134 after the first connector 134 and the corresponding beam segment 133 are connected, forming a continuous surface, so that the outer surface of the first beam 131 roughly forms a basically continuous extended surface.

[0180] For example, when the cross-section of the beam segment 133 is circular, the corresponding end face shape of the first connecting end 1342 is also circular, and the outer diameter of the end face circle of the first connecting end 1342 is equal to the outer diameter of the cross-section circle of the beam segment 133, or the inner diameter of the end face circle is equal to the inner diameter of the cross-section circle of the beam segment 133, and the outer diameters of both are also equal; when the cross-section of the beam segment 133 is triangular, square or other irregular structure, the end face of the first connecting end 1342 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 first connecting end 1342 is equal to the outer dimension of the cross-section of the beam segment 133, so that after the two are connected, the outer surface of the beam segment 133 and the outer surface of the first joint 134 are joined to form a continuous surface, as shown in Figures 7 and 8.

[0181] Understandably, in this embodiment, each beam segment 133 constituting the first beam 131 can be a hollow structure, and the first plug 1343 directly adapts to the internal dimensions of the beam segment 133, allowing the first plug 1343 to be directly inserted into the inner cavity of the beam segment 133. Alternatively, each beam segment 133 constituting the first beam 131 can also be a solid structure, with a slot provided at the end of the beam segment 133 connecting to the first connector 134. The shape and size of the slot are adapted to the shape and size of the first plug 1343, allowing the first plug 1343 to be inserted into the slot and connected to the corresponding beam segment 133.

[0182] In this embodiment, each beam segment 133 constituting the first beam 131 can be a hollow structure. The shape of the first plug 1343 is adapted to the inner cavity shape of the corresponding beam segment 133. After the first plug 1343 is inserted into the corresponding beam segment 133, at least a portion of the sidewall of the first plug 1343 is tightly fitted with the inner cavity wall of the corresponding beam segment 133, so that the first connector 134 and the corresponding beam segment 133 have good connection strength, maintaining the stability and reliability of the connection. The sidewall of the first plug 1343 can be similar to the inner cavity wall of the corresponding beam segment 133, and the sidewall of the first plug 1343 can be completely fitted with the inner cavity wall of the corresponding beam segment 133. Alternatively, the sidewall of the first plug 1343 can include one or more parts, and one or more parts can be fitted with portions of the inner cavity wall of the corresponding beam segment 133, as shown in Figures 11 and 12.

[0183] Thus, two adjacent beam segments 133 are respectively connected to the two first connecting ends of the first connector 134 and plugged into the corresponding first plug 1343. The shape and size of the two first connecting ends 1342 of the first connector 134 are adapted to the cross-sectional shape and size of the corresponding beam segment 133. After the first connector 134 is inserted into the corresponding beam segment 133, the end face of the first connecting end 1342 can fit and abut against the end face of the corresponding beam segment 133, so that the connection between the beam segment 133 and the first connector 134 can achieve reliable connection and sealing.

[0184] In some embodiments, the first connecting end 1342 is welded to the beam segment 133. That is, the first joint 134 is welded to two adjacent beam segments 133 to form the first beam 131.

[0185] In this embodiment, the beam segment 13 and the first connecting end 1342 of the first joint 134 are connected by welding. For example, arc welding, laser welding, or ultrasonic welding can be performed on the end face of the first connecting end 1342 at the interface between it and the beam segment 133, connecting the beam segment 13 and the first joint 134 while also sealing the interface. Alternatively, plug welding can be used to weld the first plug 1343 to the side wall of the beam segment 133, resulting in a larger welding area and improved weld strength. Thus, after the first plug 1343 is inserted into the beam segment 133, welding is performed at the interface, or plug welding is used to weld the first joint 134 to the side wall of the beam segment 133, ensuring a stable and reliable sealed connection between the first joint 134 and the beam segment 133.

[0186] In some embodiments, as shown in FIG5, FIG9, FIG13 and FIG14, the second connector 135 has a second connecting end 1352, the end face shape of the second connecting end 1352 is adapted to the cross-sectional shape of the second beam 132, and the second connecting end 1352 is provided with a second plug 1353, which is adapted to be plugged into the corresponding second beam 132.

[0187] The end face shape of the second connecting end 1352 is adapted to the cross-sectional shape of the second beam 132. That is, the shape and size design of the second connecting end 1352 and the second beam 132 at the connection part are matched with each other, so that after the second plug 1353 is inserted into the second beam 132, the end face of the second connecting end 1352 can fit and abut against the end face of the second beam 132. On the basis of achieving a tight connection between the second connector 135 and the second beam 132, the outer surface of the second beam 132 and the outer surface of the second connector 135 are joined together and form a continuous surface after the second connector 135 is connected to the second beam 132.

[0188] For example, when the cross-section of the second beam 132 is circular, the corresponding end face shape of the second connecting end 1352 is also circular, and the outer diameter of the end face circle of the second connecting end 1352 is equal to the outer diameter of the cross-section circle of the second beam 132, or the inner diameter of the end face circle is equal to the inner diameter of the cross-section circle of the second beam 132, and the outer diameters of both are also equal; when the cross-section of the second beam 132 is triangular, square or other irregular structure, the end face of the second connecting end 1352 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 second connecting end 1352 is equal to the outer dimension of the cross-section of the second beam 132, so that after the two are connected, the outer surface of the second beam 132 and the outer surface of the second joint 135 are joined and form a continuous surface.

[0189] Understandably, in this embodiment, the second beam 132 can be a hollow beam, and the second plug 1353 is directly adapted to the internal dimensions of the second beam 132, allowing the second plug 1353 to be directly inserted into the inner cavity of the second beam 132. Alternatively, the second beam 132 can also be a solid beam, with a slot provided at the end of the second beam 132 where the second connector 135 is connected. The shape and size of the slot are adapted to the shape and size of the second plug 1353, allowing the second plug 1353 to be inserted into the slot and connected to the second beam 132.

[0190] In this embodiment, the second beam 132 is a hollow beam, and the shape of the second plug 1353 is adapted to the inner cavity shape of the second beam 132. After the second plug 1353 is inserted into the second beam 132, at least a portion of the sidewall of the second plug 1353 is tightly fitted with the inner cavity wall of the second beam 132, so that the second connector 135 and the second beam 132 have good connection strength, maintaining the stability and reliability of the connection. The sidewall of the second plug 1353 may be similar to the inner cavity wall of the second beam 132, and the sidewall of the second plug 1353 may be completely fitted with the inner cavity wall of the second beam 132. Alternatively, the sidewall of the second plug 1353 may include one or more parts, and one or more parts may be fitted with portions of the inner cavity wall of the second beam 132.

[0191] Thus, the shape and size of the second connecting end 1352 of the second connector 135 are adapted to the cross-sectional shape and size of the second beam 132. After the second connector 135 is inserted into the second beam 132, the end face of the second connecting end 1352 can fit and abut against the end face of the second beam 132, so that the connection between the second beam 132 and the second connector 135 can achieve reliable connection and sealing.

[0192] In some embodiments, the second connecting end 1352 is welded to the second beam 132. For example, arc welding, laser welding, or ultrasonic welding can be performed at the interface between the end face of the second connecting end 1352 and the second beam 132, connecting the second beam 132 and the second connector 135 while also sealing the interface. Alternatively, plug welding or similar methods can be used to weld between the second plug 1353 and the sidewall of the second beam 132, resulting in a larger welding area and improved weld strength. Thus, after the second plug 1353 is inserted into the second beam 132, welding at the interface, or plug welding or similar methods, between the second connector 135 and the sidewall of the second beam 132, ensures a stable and reliable sealed connection between the second connector 135 and the second beam 132.

[0193] In some embodiments, as shown in Figures 4, 5, 12 and 14, the first connecting portion 1341 is provided with a cavity 13411, and the second connecting portion 1351 is adapted to be inserted into the cavity 13411.

[0194] It should be noted that the cavity 13411 is a spatial structure with a specific shape and size disposed on the first connector 134. The shape and internal dimensions of the cavity 13411 are approximately the same as the external shape and dimensions of the second connecting part 1351, so that the second connecting part 1351 can maintain a tight fit with the cavity wall of the cavity 13411 after being inserted into the cavity 13411. For example, when the second connecting part 1351 is a cylindrical plug structure, the cavity 13411 is square in shape and has a certain depth to ensure that the second connecting part 1351 can be inserted to a sufficient length to ensure the stability of the connection. Alternatively, when the second connecting part 1351 is a cylindrical plug structure, the cavity 13411 corresponds to a cylindrical hole with a certain depth. In some examples, the wall of cavity 13411 can be smooth or rough, or it can be provided with a special textured structure such as grooves or protrusions. Smooth walls facilitate the insertion of the second connecting part 1351, while rough or special textured structures can be used to increase friction or achieve specific positioning functions.

[0195] Understandably, the fitting and insertion of the second connecting part 1351 into the cavity 13411 indicates that the two are matched in shape and size. This not only ensures that the second connecting part 1351 can be smoothly inserted into the cavity 13411, but also allows the second connecting part 1351 to achieve a certain degree of tightness and stability with the cavity wall after insertion. For example, a certain narrowing design can be made at the entrance of the cavity 13411. When the second connecting part 1351 is inserted, the narrowing can generate a certain elastic deformation, forming a clamping force on the second connecting part 1351, thereby reducing the risk of the second connecting part 1351 dislodging. At the same time, the length of the second connecting part 1351 and the depth of the cavity 13411 also need to be reasonably designed so that after the second connecting part 1351 is fully inserted, the side of the second connecting part 1351 can achieve good contact with the cavity wall of the cavity 13411 to ensure the effective transmission of force.

[0196] In this embodiment, by providing a cavity 13411 in the first connecting portion 1341, i.e., the first connector 134 is provided with a cavity 13411, and the second connecting portion 1351 of the second connector 135 is adapted to be inserted into the cavity 13411, the second connecting portion 1351 of the second connector 135 can be accommodated inside the first connector 134. When the first connector 134 and the second connector 135 are connected, the second connecting portion 1351 is inserted into the cavity 13411 of the first connecting portion 1341. The insertion connection operation is simple and quick, which helps to improve the overall assembly efficiency of the frame 11. After the second connecting part 1351 is inserted into the cavity 13411, the second connecting part 1351 is housed inside the first connector 134. The second connecting part 1351 has a certain contact area with the first connector 134 by contacting the cavity wall of the cavity 13411, so that the force can be dispersed and transmitted, and the force can be evenly distributed on the contact surface. This helps to improve the mechanical properties of the connection position, improve the connection reliability of the first connector 134 and the second connector 135, and thus improve the load-bearing capacity of the entire frame 11.

[0197] In some embodiments, as shown in Figures 4, 5, 12 and 14, the cavity wall of the cavity 13411 is provided with a first connecting hole 13412, and the second connecting part 1351 is provided with a second connecting hole 13511. The first connecting hole 13412 and the second connecting hole 13511 are used to cooperate with the connector 1002 to connect the first connecting part 1341 and the second connecting part 1351.

[0198] A first connecting hole 13412 and a second connecting hole 13511 are respectively provided in the cavity wall of the cavity 13411 and the second connecting portion 1351. When the first connector 134 is connected to the second connector 135, the second connecting portion 1351 of the second connector 135 is inserted into the cavity 13411, and then a connector 1002 that is compatible with the first connecting hole 13412 and the second connecting hole 13511 is used for connection. The connector 1002 can be a screw, bolt, pin, rivet, etc. In this way, the first connector 134 and the second connector 135 can not only be positioned through the cavity 13411, but also be connected through the first connecting hole 13412 and the second connecting hole 13511 with the connector 1002, thereby further improving the reliability and stability of the connection.

[0199] In a specific embodiment, the first connecting hole 13412 can be a through hole penetrating the cavity wall of the cavity 13411, the second connecting hole 13511 can be a screw hole, and the connector 1002 corresponds to a screw or bolt. The cavity wall of the cavity 13411 is screwed to the corresponding second connecting part 1351 to connect the first connector 134 and the second connector 135. The first connecting hole 13412 can be a countersunk hole, allowing the head of the connector 1002, such as a screw or bolt, to be embedded in the first connector 134 without protruding from the outer surface of the first connector 134.

[0200] In some embodiments, as shown in Figures 4, 5, 12, and 14, the cavity 13411 has a first inner wall surface 1341a that is angled to the length direction of the corresponding first beam 131, and the second connecting portion 1351 has a first side surface 1351a that is parallel to the length direction of the corresponding second beam 132. In the first connector 134 and the second connector 135 that are connected to each other, the first inner wall surface 1341a abuts against the first side surface 1351a.

[0201] In this embodiment, it can be understood that the cavity 13411 has a first inner wall surface 1341a, which is set at an angle to the length direction of the first beam 131, that is, the first inner wall surface 1341a is not parallel to the length direction of the first beam 131. The second connecting portion 1351 has a second side surface 1351b, which is parallel to the length direction of the second beam 132, that is, the second side surface 1351b is a plane extending along the length direction of the second beam 132. In the interconnected first connector 134 and second connector 135, the first inner wall surface 1341a abuts against the first side surface 1351a. When the second connecting part 1351 is inserted into the cavity 13411, the first inner wall surface 1341a and the first side surface 1351a fit tightly together. By setting the first inner wall surface 1341a so that it has a specific angle with the length direction of the first beam 131, when the first side surface 1351a of the second connecting part 1351 abuts against the first inner wall surface 1341a, the first beam 131 and the second beam 132 can be connected and the aforementioned specific angle between them can be maintained.

[0202] Thus, by setting a first inner wall surface 1341a at an angle to the length direction of the first beam 131 on the inner wall surface of the cavity 13411, and by designing the first inner wall surface 1341a to have different angles with the length direction of the first beam 131, the first beam 131 and the second beam 132 can have different corresponding angles. This allows the first beam 131 and the second beam 132 to form a specific spatial angular relationship according to the design requirements, thereby constructing a frame 11 with a specific geometric shape. The design of the frame 11 is more flexible and the structure is more diverse.

[0203] In a specific embodiment, the included angle between the first inner wall surface 1341a and the length direction of the first beam 131 can be an acute angle, a right angle, or an obtuse angle, which can be designed according to the angle requirements when the first beam 131 is connected to the second beam 132. For example, when the first beam 131 needs to be perpendicularly connected to the second beam 132, the first inner wall surface 1341a is set to be perpendicular to the length direction of the first beam 131, that is, the angle between the first inner wall surface 1341a and the length direction of the first beam 131 is a right angle. In this way, after the first connector 134 and the second connector 135 are connected, the angle between the first beam 131 and the second beam 132 is also a right angle, and the first beam 131 and the second beam 132 are perpendicularly connected. Alternatively, when the first beam 131 and the second beam 132 need to have other angles, such as 60°, the angle between the first inner wall surface 1341a and the length direction of the first beam 131 is set to 60°. After the first connector 134 and the second connector 135 are connected, the first beam 131 and the second beam 132 are connected and maintain a 60° angle between them.

[0204] In some embodiments, as shown in Figures 4, 5, 12, and 14, the cavity 13411 has two first inner wall surfaces 1341a spaced apart along the length direction of the corresponding first beam 131, and the second connecting portion 1351 has two oppositely arranged first side surfaces 1351a. In the first connector 134 and the second connector 135 that are connected to each other, the second connecting portion 1351 is sandwiched between the two first inner wall surfaces 1341a.

[0205] When the second connecting part 1351 is inserted into the cavity 13411, the second connecting part 1351 is clamped between the two second inner wall surfaces 1341b. The two first side surfaces 1351a of the second connecting part 1351 respectively fit and abut against the corresponding first inner wall surface 1341a. In a direction perpendicular to the length direction of the first beam 131, the two first inner wall surfaces 1341a can also limit the movement of the second connecting part 1351, thereby further improving the insertion strength of the second connecting part 1351.

[0206] In some embodiments, the cavity 13411 further has a second inner wall surface 1341b connected between the two first inner wall surfaces 1341a, the second connecting portion 1351 has a second side surface 1351b connected between the two first side surfaces 1351a, the first beam 131 has an outer plane 1311 parallel to its length direction, the second inner wall surface 1341b is set at an angle to the outer plane 1311, and in the first connector 134 and the second connector 135 that are connected to each other, the second inner wall surface 1341b abuts against the second side surface 1351b.

[0207] The first beam 131 having an outer plane 1311 parallel to its length direction means that the first beam 131 has a plane extending along its length direction, and spatially this plane is located outside the internal space of the frame 11. The cavity 13411 also has a second inner wall surface 1341b, which connects the two first inner wall surfaces 1341a. The second inner wall surface 1341b and the first inner wall surfaces 1341a enclose the internal space of the cavity 13411, and the second inner wall surface 1341b is not parallel to the outer plane 1311, and there is an included angle between them. When the second connecting part 1351 is inserted into the cavity 13411, the second side surface 1351b of the second connecting part 1351 fits and abuts against the second inner wall surface 1341b. By designing the second inner wall surface 1341b to have different included angles with the outer plane 1311 of the first connector 134, the outer planes 1311 of the second beam 132 and the first beam 131 can have different included angles.

[0208] In a specific embodiment, the included angle between the second inner wall surface 1341b and the outer plane 1311 can be an acute angle, a right angle, or an obtuse angle, and can be designed according to the angle requirements when the first beam 131 and the second beam 132 are connected.

[0209] For example, the angle between the second inner wall surface 1341b and the outer plane 1311 can be acute or obtuse. When the frame 11 is a beam-column frame 11, such as a cubic frame 11, when it is necessary to add a second beam 132 or a connecting structure composed of second beams 132 to the upper or lower space of a certain side plane of the frame 11 (taking the connecting beams 13 as straight lines, the plane defined by the connection of the four connecting beams 13 end to end is the side plane), at least one of the four beams enclosing the side plane is set as the first beam 131. The plane containing the outer plane 1311 of the first beam 131 is parallel to or opposite to the side plane. Thus, the second inner wall surface 1341b of the cavity 13411 of the first joint 134 on the first beam 131 is inclined relative to the side plane. After the second beam 132 is connected to the first beam 131, the second beam 132 can have a corresponding angle with the corresponding side plane. It can be understood that the first beam 131 and the second beam 132 can be regarded as two straight lines. When the angle between the second inner wall surface 1341b and the outer plane 1311 is a right angle, the second beam 132 is located in the corresponding side plane. When the angle between the second inner wall surface 1341b and the outer plane 1311 is an acute angle or an obtuse angle, the second beam 132 is not in the same plane as the corresponding side plane.

[0210] In some embodiments, as shown in Figures 2, 6 and 7, the frame 11 has at least two parallel first beams 131 and at least one second beam 132. Each of the opposite ends of the at least one second beam 132 is connected to a second joint 135. The two second joints 135 connected to the same second beam 132 are connected to the two first joints 134 of the two parallel first beams 131.

[0211] Understandably, the frame 11 has at least two parallel first beams 131, meaning that among the multiple connecting beams 13 constituting the frame 11, two or more connecting beams 13 are first beams 131, and two of these first beams 131 are arranged in parallel. For example, the frame 11 may have two first beams 131 that are parallel to each other; or, the frame 11 may have three first beams 131, where two of the three first beams 131 are parallel or the three first beams 131 are parallel to each other; or, the frame 11 may have four first beams 131, where two of the four first beams 131 are parallel to each other, or three of the four first beams are parallel to each other, or all four are parallel to each other.

[0212] The frame 11 also has at least one second beam 132, that is, among the multiple connecting beams 13 that make up the frame 11, one or more connecting beams 13 are second beams 132, and each of the opposite ends of the second beam 132 is connected to a second joint 135. The second joints 135 at both ends are connected one-to-one with the two first joints 134 provided on the two parallel first beams 131, thereby connecting a second beam 132 between the two parallel first beams 131.

[0213] For example, one of the connecting beams 13 is a second beam 132, and the frame 11 has two parallel first beams 131. The second beam 132 is connected between the two first beams 131. Alternatively, the connecting beam 13 has multiple (two or more) second beams 132, and the frame 11 has two parallel first beams 131. Each of the two first beams 131 includes multiple (two or more) first joints 134. Each second beam 132 is connected to the first joints 134 on the two parallel first beams 131 through its respective second joint 135, thereby connecting multiple second beams 132 between the two first beams 131 at intervals. Alternatively, the connecting beam 13 has multiple (two or more) second beams 132, and the frame 11 has three or four parallel first beams 131. Each second beam 132 is connected to the first joints 134 on the two parallel first beams 131 through its respective second joint 135, thereby connecting multiple second beams 132 between different two first beams 131.

[0214] In this embodiment, the second joints 135 at both ends of the second beam 132 are connected to the two first joints 134 disposed on the two parallel first beams 131, thereby connecting a second beam 132 between the two parallel first beams 131. The second beam 132 can be used to support the two connected first beams 131. At the same time, the second beam 132 can also separate the area between the two first beams 131.

[0215] In some embodiments, as shown in Figures 2, 6 and 7, the second connecting portions 1351 of the two second connectors 135 are connected to connect the two second beams 132. The two interconnected second connecting portions 1351 are adapted to be inserted into the cavity 13411 so that the two second beams 132 are connected as a whole to the middle of a first beam 131.

[0216] That is, the two second beams 132 are connected to each other through their respective second joints 135 to form an integral structure. The two interconnected second joints 135 can be inserted as a whole into the cavity 13411 of the first joint 134, thereby connecting the two second beams 132 to the same middle position of the first beam 131. In this way, when additional support is needed for the middle of the first beam 131, the connection structure of the two second beams 132 can effectively distribute and transfer the force in the middle of the first beam 131 to the two second beams 132, thereby strengthening the support effect on the first beam 131.

[0217] In some examples, the frame 11 has three parallel and non-coplanar first beams 131, and two second beams 132. Each of the two opposite ends of the second beams 132 is connected to a second joint 135. One end of the second joint 135 of one second beam 132 is connected to the second joint 135 of the other second beam 132. The two connected second joints 135 are connected to the first joint 134 of the first beam 131 located in the middle of the three parallel first beams 131. The other two second joints 135 of the second beam 132 are then connected to the first joints 134 of the other two first beams 131 respectively, thereby connecting the two second beams 132 between the three parallel and non-coplanar first beams 131.

[0218] In other examples, as shown in Figures 2, 6, and 7, the frame 11 has four parallel first beams 131, any three of which are not coplanar. The frame 11 also has four second beams 132, which are connected end to end by their respective second joints 135 to form a square. The two interconnected second joints 135 at the four corners of the square are respectively connected to the first joints 134 of the four parallel first beams 131, thereby connecting the square between the four parallel first beams 131. The connection of the square can divide the space between the four parallel first beams 131 into two regions.

[0219] In some embodiments, as shown in FIG6, FIG7, FIG12 and FIG14, the second connecting portion 1351 further has a positioning wedge surface 1351c. In the two interconnected second joints 135, the two positioning wedge surfaces 1351c abut against each other so that the two second beams 132 are connected at a first preset angle β.

[0220] 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 second beams 132 are to be connected at a certain angle β (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.

[0221] For example, if the first preset angle is 90°, that is, when the two second beams 132 need to be connected vertically, the design of the inclination angle of the positioning wedge surface 1351c of the two second joints 135 is such that when the two are in contact, a 90° angle is naturally formed between the two second beams 132; or, if the first preset angle is 60°, that is, when the two second beams 132 need to be connected vertically, the design of the inclination angle of the positioning wedge surface 1351c of the two second joints 135 is such that when the two are in contact, a 60° angle is naturally formed between the two second beams 132.

[0222] Thus, when the two second joints 135 are connected, the positioning wedge surface 1351c of one second joint 135 abuts against the positioning wedge surface 1351c of the other second joint 135. By designing the shape and angle of the positioning wedge surfaces 1351c of the two second joints 135, when the two abut against each other, the two connected second beams 132 can be guided to connect at a first preset angle. Furthermore, when the two positioning wedges 1351c abut, due to the friction and mutual support of the wedges, they can effectively resist external forces, reduce the risk of angular displacement between the connected second beams 132, and make the force transmission at the connection position of the frame 11 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 1002, the connection of a specific angle by using the abutment of the wedges only requires the two corresponding positioning wedges 1351c to be put into contact with each other. 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.

[0223] In some embodiments, as shown in Figures 6, 7, 12 and 14, the plane containing the positioning wedge surface 1351c has a positioning angle α with the length direction of the corresponding second beam 132, and the sum of the two positioning angles of the two interconnected second joints 135 is equal to the first preset angle.

[0224] Thus, the positioning wedge surface 1351c is a plane that is inclined relative to the length direction of the second beam 132. The positioning wedge surface 1351c and the corresponding length direction of the second beam 132 have a positioning angle. In the two interconnected second joints 135, the sum of the angles of the two positioning angles is equal to the connection angle between the two second beams 132 (i.e., the first preset angle). Thus, after the two second beams 132 are connected through the two second joints 135, the corresponding angle between the two second beams 132 is the first preset angle.

[0225] In some embodiments, as shown in Figures 7, 12 and 14, the first preset angle is a right angle and the positioning angle is 45°.

[0226] Thus, the included angle of the two first joints 134 is 45 degrees, and the connection of the two first joints 134 can make the two second beams 132 vertically connected.

[0227] In some embodiments, as shown in FIG7, FIG13 and FIG14, the second connecting portion 1351 includes a first sub-portion 13512 and a second sub-portion 13513. In the two interconnected second connectors 135, the first sub-portion 13512 of one second connector 135 is connected to the second sub-portion 13513 of the other second connector 135.

[0228] Understandably, in addition to the positioning wedge surface 1351c in the above embodiment, the second connecting portion 1351 of the second connector 135 also has a first sub-part 13512 and a second sub-part 13513. The first sub-part 13512 is a part of the second connecting portion 1351, and correspondingly, the second sub-part 13513 is another part of the second connecting portion 1351. When the two second connectors 135 are connected to each other, the first sub-part 13512 of one second connector 135 is connected to the second sub-part 13513 of the other second connector 135. The first sub-part 13512 of one second connector 135 and the second sub-part 13513 of the other second connector 135 can be connected by snap-fit, plug-in, screw-in, or welding.

[0229] For example, the first sub-part 13512 may be a sidewall of the second connecting part 1351, and the second sub-part 13513 may be another sidewall. The sidewall of the first sub-part 135 of one second connector 135 may be screwed or welded to the other sidewall of the second sub-part 13513 of the other second connector 135 to connect the two second connectors 135. Alternatively, the first sub-part 13512 may be a protrusion on the second connecting part 1351, and the second sub-part 13513 may be a groove that fits the protrusion. The protrusion of the first sub-part 13512 of one second connector 135 may be snapped or plugged into the groove of the second sub-part 13513 of the other second connector 135.

[0230] In this embodiment, the second connecting part 1351 serves as a connecting part for connecting two second connectors 135. It includes a first sub-part 13512 and a second sub-part 13513. When the two second connectors 135 are connected, the first sub-part 13512 of one second connector 135 can be arbitrarily connected to the second sub-part 13513 of the other second connector 135. The two connected second connectors 135 can have the same structure and size. Any two second connectors 135 can be connected without providing male and female parts for structural adaptation. This allows the second connector 135 to serve as a standard connector for the mutual connection between any two second beams 132. The second connector 135 has good versatility and practicality.

[0231] In some embodiments, the first sub-part 13512 has a recessed platform 13514 on its outer surface, and in the two interconnected second connectors 135, at least a portion of the second sub-part 13513 of one second connector 135 is embedded in the recessed platform 13514 of the other second connector 135 so that the outer surfaces of the interconnected first sub-part 13512 and the outer surfaces of the second sub-part 13513 are flush.

[0232] Understandably, the first sub-part 13512 has a recessed platform 13514 on its outer surface. From the appearance, the outer surface of the first sub-part 13512 is not flat, but has a downwardly recessed area, which is the platform 13514. Furthermore, the shape, size, and depth of the recess of this platform 13514 need to be designed according to the second sub-part 13513 so that after the two second connectors 135 are connected, at least a portion of the second sub-part 13513 of one second connector 135 can be embedded in the platform 13514 on the other second connector 135. For example, the recessed platform 13514 may be circular, square, or other irregularly shaped. Correspondingly, the second sub-part 13513 has a portion of its structure that is circular, square, or similar to the irregular shape of the recessed platform 13514. This portion of the structure of the second sub-part 13513 can be embedded in the recessed platform 13514. Furthermore, the depth of the recessed platform 13514 recessed downward from the outer surface of the first connector 134 is substantially equivalent to the thickness of the portion of the second sub-part 13513 that is embedded in the recessed platform 13514. This ensures that after this portion of the structure of the second sub-part 13513 is embedded in the recessed platform 13514, the outer surface of the first sub-part 13512 and the outer surface of the second sub-part 13513 remain flush.

[0233] It should be noted that keeping the outer surface of the first sub-part 13512 flush with the outer surface of the second sub-part 13513 means that the outer surfaces of the interconnected first sub-part 13512 and the second sub-part 13513 are on the same plane, with no height difference between them. Furthermore, the first sub-part 13512 and the second sub-part 13513 are joined together on their outer surfaces. From the appearance, after connection, the outer surfaces of the first sub-part 13512 and the second sub-part 13513 form a continuous and flat plane.

[0234] In this embodiment, on the same second connector 135, the first sub-part 13512 is provided with a recessed platform 13514 whose size and shape are adapted to at least a portion of the shape and size of the second sub-part 13513. After the two second connectors 135 are connected, at least a portion of the second sub-part 13513 can be correspondingly embedded into the recessed platform 13514, so that the connection position can be structurally abutted by the second sub-part 13513 and the recessed platform 13514, thereby enabling the two second connectors 135 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 second connectors 135. Furthermore, the second sub-part 13513 is at least partially embedded in the recessed platform 13514, and the outer surfaces of the interconnected first sub-part 13512 and the second sub-part 13513 are flush. The outer surfaces of the two interconnected parts are smoothly connected without gaps or misalignment. The two interconnected second connecting parts 1351 have flush outer surfaces, which allows them to be better adapted to the cavity 13411 of the first connector 134 and to fit tightly against the cavity wall of the cavity 13411.

[0235] In some embodiments, as shown in FIG7, FIG13 and FIG14, the recessed platform 13514 is provided with a third connecting hole 13515, and the second sub-part 13513 is provided with a fourth connecting hole 13516. The third connecting hole 13515 and the fourth connecting hole 13516 are used to cooperate with the connector 1002 to connect the first sub-part 13512 and the second sub-part 13513.

[0236] A third connecting hole 13515 and a fourth connecting hole 13516 are respectively provided in the recessed platform 13514 and the second sub-part 13513. When the two second joints 135 are connected, a connector 1002 adapted to the third connecting hole 13515 and the fourth connecting hole 13516 can be used for connection. The connector 1002 can be a screw, bolt, pin, rivet, etc. In this way, the recessed platform 13514 and the second sub-part 13513, i.e. the two second joints 135, are connected through the connector 1002. The connection structure is simple and the operation is convenient.

[0237] In a specific embodiment, the third connecting hole 13515 can be a screw hole, the fourth connecting hole 13516 can be a through hole, and the connector 1002 corresponds to a screw or bolt. The first sub-part 13512 is screwed to the corresponding second sub-part 13513 to connect the two second connectors 135. The fourth connecting hole 13516 can be a countersunk hole, allowing the head of the screw or bolt or other connector 1002 to be inserted into the second connecting part 1351 without protruding from its surface. Thus, the connector 1002 will not interfere with the insertion of the second connecting part 1351 into the first connector 134.

[0238] In some embodiments, as shown in Figures 7, 12 to 14, the cavity 13411 has a second inner wall surface 1341b and a third inner wall surface 1341c that are continuously disposed, and the second connecting portion 1351 has a second side surface 1351b. Among the two interconnected second connectors 135 and a first connector 134, the second side surface 1351b of one second connector 135 abuts against the second inner wall surface 1341b, and the second side surface 1351b of the other second connector 135 abuts against the third inner wall surface 1341c.

[0239] In this embodiment, the cavity wall of the cavity 13411 of the second connector 135 has a connected second inner wall surface 1341b and a third inner wall surface 1341c. The second inner wall surface 1341b abuts against the second side surface 1351b of the second connecting portion 1351 of one second connector 135, and the third inner wall surface 1341c abuts against the second side surface 1351b of the second connecting portion 1351 of the other second connector 135. When the two second connectors 135 are connected, the two connected second connecting portions 1351 can fit and abut against the second inner wall surface 1341b and the third inner wall surface 1341c, so that the two connected second connectors 135 can be inserted into the first connector 134 more stably and reliably.

[0240] In some embodiments, as shown in Figures 7 and 12 to 14, the second inner wall surface 1341b is provided with a protrusion 13413, which extends from the second inner wall surface 1341b to the third inner wall surface 1341c. The opposite ends of the protrusion 13413 extend outward from the opposite sides of the cavity 13411 to connect with the outer surface of the second connector 135. The second side surface 1351b is provided with a groove 13517. In the two interconnected second connectors 135, one end of the two grooves 13517 is connected, and the other end of the two grooves 13517 extends to connect with the outer surface of the corresponding second connector 135. In the two interconnected second connectors 135 and the first second connector 135, the protrusion 13413 is sealed and engaged with the two grooves 13517.

[0241] In this embodiment, a groove 13517 is provided between the second side surface 1351b of the second connecting part 1351 and the second inner wall surface 1341b or the third inner wall surface 1341c of the cavity 13411 that abuts thereto, and the groove 13517 is adapted to engage with the protrusion 13413. The convex-concave structure can increase the misalignment shear strength between the two abutting surfaces, thereby improving the connection strength. Based on this, the protrusion 13413 extends from the second inner wall surface 1341b to the third inner wall surface 1341c, and the opposite ends extend from the opposite sides of the first connector 134 to connect with the outer surface of the first connector 134. After the two second connectors 135 are connected, the adjacent ends of the two grooves 13517 are connected and the opposite ends extend to connect with the outer surface of the corresponding second connector 135. Thus, when the two second connectors 135 are connected and then connected to the first connector 134, the interlocking grooves 13517 and protrusion 13413 extend from one side of the outer surface of the first connector 134 to the opposite side, and the two are sealed together, so that the two second connectors 135 can achieve a sealed connection with the first connector 134.

[0242] In a specific embodiment, sealant can be injected into the groove 13517 to seal the connection protrusion 13413, or a sealing strip can be installed in the groove 13517 to seal the connection protrusion 13413.

[0243] Please refer to Figures 2, 6 to 14. One embodiment of this application provides a frame 11, which includes an outer frame 101 and a partition frame 1001. The outer frame 101 is a cubic frame formed by connecting twelve connecting beams 13. The four parallel connecting beams 13 of the outer frame 101 are first beams 131. The partition frame 1001 is connected to the middle of the outer frame 101. The partition frame 1001 is a square frame formed by connecting four second beams 132 end to end through second joints 135. The second joints 135 at the four corners of the partition frame 1001 are connected one-to-one with the second joints 135 of the four parallel first beams 131 of the outer frame 101.

[0244] In this embodiment, the frame 11 includes sixteen connecting beams 13. Twelve of the connecting beams 13 are interconnected to form a cubic outer frame 101. Four of the twelve connecting beams 13 forming the outer frame 101 are first beams 131, which are arranged in parallel. The other four of the sixteen connecting beams 13 are second beams 132. Each first beam 131 includes two beam segments 133 and a first joint 134 connecting the two beam segments 133. Each of the four second beams 132 has a second joint 135 connected to its opposite ends.

[0245] In each of the first beams 131, the first connector 134 has two opposing first connecting ends 1342. The end face shape of the first connecting end 1342 is adapted to the cross-sectional shape of the two beam segments 133. The two first connecting ends 1342 are respectively provided with first plugs 1343, which are inserted into the two beam segments 133 respectively. At the same time, the two first connecting ends 1342 are respectively sealed and welded to the two beam segments 133. The outer surface of the two beam segments 133 and the outer surface of the first connector 134 are continuous surfaces. The second connector 135 has a second connecting end 1352. The end face shape of the second connecting end 1352 is adapted to the cross-sectional shape of the second beam 132. The second connecting end 1352 is provided with a second plug 1353, which is inserted into the second beam 132. At the same time, the second connecting end 1352 and the second beam 132 are sealed and welded. The outer surface of the second beam 132 and the outer surface of the second connector 135 are continuous surfaces.

[0246] Four second beams 132 are connected end to end through corresponding second joints 135 to form a partition frame 1001. The second joints 135 located at the four corners of the partition frame 1001 are connected one-to-one with the first joints 134 of the four parallel first beams 131, thereby connecting the partition frame 1001 to the middle of the outer frame 101.

[0247] The second connector 135 also has a second connecting part 1351. The two second connectors 135 are connected to each other through their respective second connecting parts 1351. The second connecting part 1351 also has a positioning wedge surface 1351c. The plane where the positioning wedge surface 1351c is located forms a 45° angle with the length direction of the corresponding second beam 132. In the two interconnected second connectors 135, the two positioning wedge surfaces 1351c abut against each other so that the two second beams 132 are vertically connected. The second connecting part 1351 also includes a first sub-part 13512 and a second sub-part 13513. The first sub-part 13512 is recessed with a countersunk platform 13514, which has a screw hole. The second countersunk platform 13514 has a through hole. In the two connected second connectors 135, a portion of the second sub-part 13513 of one second connector 135 is embedded in the countersunk platform 13514 of the other second connector 135 and connected by bolts. The shape, size, and depth of the countersunk platform 13514 are basically equivalent to the shape, size, and thickness of a portion of the second sub-part 13513, so that the outer surfaces of the corresponding first sub-part 13512 and second sub-part 13513 can remain flush after connection.

[0248] The first connector 134 also includes a first connecting part 1341. The first connecting part 1341 is provided with a cavity 13411. The two second connecting parts 1351 of the two interconnected second connectors 135 are adapted to be inserted into the cavity 13411. The cavity 13411 has two first inner wall surfaces 1341a that are perpendicular to the length direction of the first beam 131. The two first inner wall surfaces 1341a are spaced apart along the length direction of the first beam 131. The second connecting portion 1351 of the first connector 134 has two parallel sidewalls. A recessed platform 13514 is provided on one of the sidewalls. The sidewall with the recessed platform 13514 is designated as the first sub-part 13512, and the other sidewall is designated as the second sub-part 13513. The sides of the two sidewalls are designated as first sidewalls 1351a. The first sidewalls 1351a are parallel to the length direction of the corresponding second beam 132. The two interconnected second connecting portions 1351 have corresponding first sidewalls 1351a located on the same plane. When the two connected second connecting portions 1351 are inserted into the cavity 13411, the two first sidewalls 1351a abut against the two first inner wall surfaces 1341a, so that the two second beams 132 are perpendicularly connected to the first beam 131. Furthermore, the outer surfaces of the interconnected first connector 134 and the second connector 135 are continuous surfaces, so that the outer surfaces of the interconnected first beam 131 and the second beam 132 are connected through the first connector 134 and the second connector 135 to form a continuous surface. The cavity wall of the cavity 13411 is provided with a first connecting hole 13412, and the second connecting part 1351 is also provided with a second connecting hole 13511. When the first connector 134 is connected to the two second connectors 135, it is positioned by the cavity 13411 and is connected to the connector 1002 by cooperating through the first connecting hole 13412 and the second connecting hole 13511.

[0249] Furthermore, the cavity 13411 also has a second inner wall surface 1341b and a third inner wall surface 1341c connected between the two first inner wall surfaces 1341a. The second inner wall surface 1341b is connected to the third inner wall surface 1341c. The first inner wall surface 1341a, the second inner wall surface 1341b, and the third inner wall surface 1341c enclose the internal space of the cavity 13411. The two interconnected second connectors 135 also have two second side surfaces 1351b. The two second side surfaces 1351b abut against the second inner wall surface 1341b and the third inner wall surface 1341c respectively. The cavity 13411 is a right-angled cavity. The two interconnected second connectors 1351 form a cubic structure that matches the shape of the cavity 13411. The two second beams 132 connected to a first beam 131 have one located in one side plane of the outer frame 101 and the other located in the adjacent other side plane. The second inner wall surface 1341b is also provided with a protrusion 13413, which extends from the second inner wall surface 1341b to the third inner wall surface 1341c. The two opposite ends of the protrusion 13413 extend outward from the opposite sides of the cavity 13411 to connect with the outer surface of the second connector 135. The second side surface 1351b is provided with a groove 13517. In the two interconnected second connectors 135, one end of the two grooves 13517 is connected, and the other end of the two grooves 13517 extends to connect with the outer surface of the corresponding second connector 135. In the two interconnected second connectors 135 and the first second connector 135, the protrusion 13413 and the two grooves 13517 are sealed and engaged to make the first connector 134 and the second connector 135 sealed and connected.

[0250] In this embodiment, compared to the cubic frame 11 formed by connecting simple beams at the ends, the four parallel connecting beams 13 of the outer frame 101 are set as first beams 131, and four second beams 132 are connected end to end by second joints 135 to form a partition frame 1001. The second joints 135 at the four corners of the partition frame 1001 are connected one-to-one with the four first joints 134 provided on the four parallel first beams 131. Thus, the partition frame 1001 can be inserted into the cubic outer frame 101. Each second beam 132 that makes up the partition frame 1001 can not only effectively support the first beam 131 connected to it, but the partition frame 1001 as a whole can also effectively divide the internal space of the outer frame 101.

[0251] Please refer to Figure 15. Another embodiment of this application provides a frame 11, which includes an outer frame 101 and a plurality of partition frames 1001. The outer frame 101 is a cubic frame formed by connecting twelve connecting beams 13. The four parallel connecting beams 13 of the outer frame 101 are first beams 131. The plurality of partition frames 1001 are connected in parallel at intervals in the middle of the outer frame 101. Each partition frame 1001 is a square frame formed by connecting four second beams 132 end to end through second joints 135. The second joints 135 at the four corners of each partition frame 1001 are connected one-to-one with the four second joints 135 of the four parallel first beams 131 of the outer frame 101.

[0252] In this embodiment, unlike the previous embodiment, the outer frame 101 includes twelve connecting beams 13, which are interconnected to form a cubic structure. Four of the twelve connecting beams 13 forming the outer frame 101 are first beams 131, arranged in parallel. Each first beam 131 includes three or more beam segments 133 and two or more first joints 134. Each first joint 134 is spaced apart and connected between two adjacent beam segments 133. In the four parallel first beams 131, the lengths of the beam segments 133 arranged opposite each other are equal. The outer frame 101 also includes multiple second beams 132, the number of which is a multiple of four. Four second beams 132 are connected end-to-end to form a partition frame 1001. The multiple partition frames 1001 are arranged in parallel and spaced apart, and are respectively connected to the four first beams 131, thereby connecting the four partition frames 1001 to the middle of the outer frame 101 simultaneously.

[0253] Thus, by setting multiple partition frames 1001 in the outer frame 101, the internal space of the outer frame 101 is divided into more areas. Furthermore, the multiple second beams 132 of the multiple partition frames 1001 can also provide multiple points of support for the first beam 131 connected to them, thereby improving the overall structural strength and stability of the frame 11.

[0254] Understandably, in this embodiment, the other structures of frame 11 are basically the same as the relevant structures in the above embodiments, and will not be described again here.

[0255] Referring to Figures 7 to 14, another embodiment of this application provides a connector assembly, which includes a first connector 134 and a second connector 135. The opposite ends of the first connector 134 are respectively used to connect to a beam segment 133; the second connector 135 is used to connect to a second beam 132; wherein, the first connector 134 has a first connecting portion 1341, and the second connector 135 has a second connecting portion 1351, the second connecting portion 1351 being connected to the first connecting portion 1341, so as to connect the second beam 132 connected with the second connector 135 to the two beam segments 133 connected by the first connector 134.

[0256] This embodiment provides a connector assembly, which includes a first connector 134 and a second connector 135 that are mated together. The first connector 134 can be used to connect two independent beam segments 133, thereby splicing multiple beam segments 133 into a first beam 131. The second connector 135 can be used to connect to a second beam 132. The second beam 132 is then connected to the first beam 131 through the second connector 135, thereby connecting the second beam 132 to the middle of the first beam 131. Thus, by connecting the first joint 134 and the second joint 135, the second beam 132 can be connected to the middle of the first beam 131. During the design of the frame 11, the second beam 132 can be flexibly added at different positions of the first beam 131 according to actual needs, such as specific spatial layout and force transmission requirements, which greatly increases the flexibility of the structural design and assembly of the frame 11. For example, when the frame 11 is long in a certain direction, the longer beam can use the first beam 131 and connect the second beam 132 in the middle of the first beam 131 as a support, thereby changing the force transmission path of the longer beam and improving the bending resistance of the longer beam. Alternatively, when it is necessary to divide the internal space of the frame 11, multiple first beams 131 with first joints 134 can be connected with second beams 132 with second joints 135 to connect multiple second beams 132 between multiple first beams 131 to achieve spatial division of the frame 11.

[0257] Understandably, in the embodiments of this application, the structure of the first joint 134, the structure of the second joint 135, the mutual cooperation and connection between the two second joints 135, the mutual cooperation and connection between the first joint 134 and the second joint 135, the mutual cooperation and connection between the first joint 134 and the beam segment 133, and the mutual cooperation and connection between the second joint 135 and the second beam 132 are basically the same as in the embodiments described above, and will not be repeated here.

[0258] Referring to Figures 3 to 5 and Figure 16, another embodiment of this application provides a frame fabrication method for adding a second beam 132 between two parallel first beams 131 of a frame 11. The frame fabrication method includes the following steps:

[0259] S10. Connect at least two beam segments 133 using the first connector 134 in the above embodiment to obtain a first beam 131 with the first connector 134.

[0260] S20. A cubic-shaped outer frame 101 is formed by connecting twelve connecting beams 13 in the above embodiments, and at least two first beams 131 with first joints 134 are arranged in parallel in the outer frame 101.

[0261] S30. Using the second beam 132 in the above embodiment, and connecting a second connector 135 to each of the opposite ends of the second beam 132, a second beam 132 with the second connector 135 is obtained.

[0262] S40. Using at least one second beam 132, connect the second joints 135 at opposite ends of the second beam 132 to the two first joints 134 of the two parallel first beams 131 of the outer frame 101, so as to connect a second beam 132 between the two parallel first beams 131 of the outer frame 101.

[0263] For example, in step S10, the two first plugs 1343 of the first connector 134 are plugged into the corresponding beam segments 133, and then the two first connecting ends 1342 of the first connector 134 are welded to the corresponding beam segments 133, thereby connecting the two beam segments 133 through a first connector 134 and obtaining a first beam 131 with the first connector 134.

[0264] For example, in step S20, multiple connecting beams 13 are interconnected with end connections to form a cubic frame 101. The multiple connecting beams 13 can be connected by welding, snap-fitting, or joints. Understandably, at least two of the multiple connecting beams 13 are first beams 131, and at least two first beams 131 are arranged in parallel after forming the frame 101.

[0265] For example, in step S20, the outer frame 101 can be made using the following steps: using the first beams 131 obtained in two steps S10, and two other connecting beams 13, the two first beams 131 are spaced apart and connected end to end with the other two connecting beams 13 to obtain a first square; then using the other four connecting beams 13, the four connecting beams 13 are connected end to end to obtain a second square; then using the other four connecting beams 13, the four corners of the first square and the four corners of the second square are connected one-to-one through the four connecting beams 13 to obtain a cube-shaped outer frame 101.

[0266] For example, in step S30, the two second plugs 1353 of the second connector 135 are inserted into the second beam 132, and then the second connecting end 1352 of the second connector 135 is welded to the second beam 132, thereby connecting a second connector 135 to each of the opposite ends of the second beam 132.

[0267] For example, in step S40, the second connecting part 1351 of the second connector 135 connected to one end of the second beam 132 is inserted into the cavity 13411 of the first connector 134 of the first beam 131. Then, bolts or screws are used to connect the first connector 134 and the second connector 135 by engaging the first connecting hole 13412 on the first connector 134 and the second connecting hole 13511 on the second connector 135. Subsequently, the second connector 135 connected to the other end of the same second beam 132 is connected to the first connector 134 on another first beam 131 in the same manner, thereby connecting the second beam 132 between the two parallel first beams 131.

[0268] Thus, the first beam 131 is formed by connecting the beam segment 133 to the first joint 134, and the second beam 132 is formed by connecting the second joint 135 to the second beam 132. Then, twelve connecting beams 13, including the first beam 131, are connected to each other to form a cube-shaped outer frame 101. Finally, the second joints 135 at both ends of the second beam 132 are connected to the first joints 134 on the two first beams 131, so that the second beam 132 can be connected to the middle of the two parallel first beams 131. In this way, the second beam 132 can be flexibly added between the first beams 131 for support. The frame 11 is easy to manufacture.

[0269] Furthermore, since the frame manufacturing method of this embodiment uses the first beam 131 and the second beam 132 of the above embodiments, it also has at least other beneficial effects of the first beam 131 and the second beam 132 in the above embodiments, which will not be elaborated here.

[0270] Referring to Figures 2, 6 through 9, and 17, another embodiment of this application provides a different frame fabrication method for adding a dividing frame 1001 in the middle of the frame 11. The frame fabrication method includes the following steps:

[0271] S10': Connect at least two beam segments 133 using the first connector 134 in the above embodiment to obtain a first beam 131 with the first connector 134;

[0272] S20' The outer frame 101 in the cube shape is formed by connecting the connecting beam 13 in the above embodiment, and at least four first beams 131 with first joints 134 are arranged in parallel in the outer frame 101.

[0273] S30' In the above embodiment, a second connector 135 is connected to each of the opposite ends of the second beam 132 to obtain a second beam 132 with the second connector 135;

[0274] S40' Using the four second beams 132 mentioned above, and connecting the four second beams 132 end to end through the second connector 135, a square-shaped partition frame 1001 is obtained;

[0275] S50' Connect the second joints 135 at the four corners of the partition frame 1001 to the four first joints 134 of the four parallel first beams 131 of the outer frame 101 one by one, so as to connect the partition frame 1001 to the middle of the outer frame 101.

[0276] For example, in step S10', the two first plugs 1343 of the first connector 134 are inserted into the corresponding beam segments 133, and then the two first connecting ends 1342 of the first connector 134 are welded to the corresponding beam segments 133, thereby connecting the two beam segments 133 through a first connector 134 and obtaining a first beam 131 with the first connector 134.

[0277] For example, in step S20', multiple connecting beams 13 are interconnected at their ends to form a cubic frame 101. The connecting beams 13 can be welded, snap-fitted, or connected via joints. For instance, third joints can be connected to opposite ends of each connecting beam, and adjacent connecting beams are interconnected via corresponding third joints. Understandably, at least two of the multiple connecting beams 13 are first beams 131, and at least two first beams 131 are arranged in parallel after forming the frame 101.

[0278] For example, in step S20', the outer frame 101 can be made using the following steps: using the first beam 131 obtained in two steps S10' and two other connecting beams 13, the two first beams 131 are spaced apart and connected end-to-end with the other two connecting beams 13 to obtain a first square; then using the first beam 131 obtained in the other two steps S10' and two other connecting beams 13, the two first beams 131 are spaced apart and connected end-to-end with the other two connecting beams 13 to obtain a second square; then using the other four connecting beams 13, the four corners of the first square and the four corners of the second square are connected one-to-one through the four connecting beams 13, and during connection, the first beam 131 in the first square and the first beam 131 in the second square are kept parallel, thereby obtaining a cube-shaped outer frame 101.

[0279] For example, in step S30', the two second plugs 1353 of the second connector 135 are inserted into the second beam 132, and then the second connecting end 1352 of the second connector 135 is welded to the second beam 132, thereby connecting a second connector 135 to each of the opposite ends of the second beam 132.

[0280] For example, in step S40', a connection method such as snap-fit, plug-in, screw-fit, or welding is used to connect the first sub-part 13512 of the second connector 135 on one second beam 132 to the second sub-part 13513 of the second connector 135 on another second beam 132 to connect the two second beams 132. The two adjacent second connectors 135 are connected sequentially according to the basically the same operation, so that the four second beams 132 are connected end to end through the second connectors 135 to obtain the partition frame 1001.

[0281] For example, in step S50', the two second connecting parts 1351 of the two interconnected second connectors 135 at one corner of the partition frame 1001 are inserted into the cavity 13411 of the first connector 134 of the first beam 131. Then, bolts or screws are used to connect the first connector 134 and the second connector 135 with the first connecting hole 13412 on the first connector 134 and the second connecting hole 13511 on the second connector 135. Then, the interconnected second connectors 135 at the remaining three angular positions of the partition frame 1001 are connected to the first connectors 134 on the remaining three first beams 131 in the same way, thereby connecting the second beam 132 of the partition frame 1001 to the four parallel first beams 131 of the outer frame 101, that is, connecting the partition frame 1001 to the middle of the outer frame 101.

[0282] Thus, the beam segment 133 is first connected to the first joint 134 to form the first beam 131, and the second joint 135 is connected to the second beam 132 to form the second beam 132. Then, twelve connecting beams 13, including the first beam 131, are connected to each other to form a cube-shaped outer frame 101. Then, four second beams 132 are connected to form a partition frame 1001. Finally, the second joints 135 at the four angles of the partition frame 1001 are connected to the first joints 134 on the four first beams 131 in the outer frame 101, so that the partition frame 1001 can be connected to the middle of the outer frame 101. In this way, the partition frame 1001 can be flexibly added to the middle of the outer frame 101 to divide the internal space of the outer frame 101. The frame structure design is more flexible and diverse, which can meet the needs of spatial division of large-size frame 11. Moreover, the frame 11 is simple to manufacture and has good practicality and versatility.

[0283] Furthermore, since the frame manufacturing method of this embodiment uses the first beam 131 and the second beam 132 of the above embodiments, it also has at least other beneficial effects of the first beam 131 and the second beam 132 in the above embodiments, which will not be elaborated here.

[0284] Please refer to Figures 2, 6 to 9, and 18 together, taking the addition of a dividing frame 1001 within the cube-shaped outer frame 101 as an example, to describe the frame fabrication method of this application embodiment. Specifically, the frame 11 of this embodiment can be fabricated according to the following steps:

[0285] S101. Weld two beam segments 133 to the opposite ends of the first joint 134 to obtain a first beam 131 with the first joint 134.

[0286] S201. Using the two first beams 131 obtained in step S101 and the other two connecting beams 13, the two first beams 131 are spaced apart and connected end to end with the other two connecting beams 13 to obtain the first box.

[0287] S202. Using the other two first beams 131 and the other two connecting beams 13 obtained in step S101, the two first beams 131 are spaced apart and connected end to end with the other two connecting beams 13 to obtain the second box.

[0288] S203. Using four additional connecting beams 13, the four corners of the first frame and the four corners of the second frame are connected one-to-one through the four connecting beams 13. When connecting, the first beam 131 in the first frame and the first beam 131 in the second frame are kept parallel to each other, thereby obtaining a cube-shaped outer frame 101.

[0289] S301. Using four second beams 132, a second joint 135 is welded to each of the opposite ends of the upper second beam 132 to obtain four second beams 132 with second joints 135.

[0290] S401. Using the four second beams 132 obtained in step S301, connect the four second beams 132 end to end through the second connector 135 to obtain a square-shaped partition frame 1001.

[0291] S501, Connect the second joints 135 at the four corners of the partition frame 1001 to the four first joints 134 of the four parallel first beams 131 of the outer frame 101 one by one, so as to connect the partition frame 1001 to the middle of the outer frame 101 and obtain a frame 11 with a cubic shape of the partition frame 1001.

[0292] Furthermore, since the frame manufacturing method of this embodiment uses the first beam 131 and the second beam 132 of the above embodiments, it has at least the beneficial effects of the first beam 131 and the second beam 132 in the above embodiments, which will not be repeated here.

[0293] It should be noted that in the above embodiments, the other connecting beam 13 can be the first beam 131, the second beam 132, or other types of beams besides the first beam 131 and the second beam 132.

[0294] 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.

[0295] Referring to Figure 19, 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.

[0296] 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.

[0297] Referring to Figure 20, 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.

[0298] 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.

[0299] 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.

[0300] 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 framework, characterized in that, include: Multiple connecting beams are interconnected to form the frame; in A portion of the plurality of connecting beams is a first beam and another portion is a second beam. The first beam includes a plurality of beam segments and a first joint connecting adjacent beam segments. At least one end of the second beam is connected to a second joint. The first connector has a first connecting portion, and the second connector has a second connecting portion, which is connected to the first connecting portion so that the second beam is connected to the middle of the first beam.

2. The framework as described in claim 1, characterized in that, The outer surfaces of two adjacent beam segments are connected through the outer surface of the first joint to form a continuous surface; and / or, the outer surface of the second beam and the outer surface of the second joint are continuous surfaces; and / or, the outer surfaces of the first joint and the second joint that are connected to each other are continuous surfaces.

3. The framework as described in claim 1 or 2, characterized in that, Each beam segment is sealed to the corresponding first joint; and / or, the second beam is sealed to the second joint; and / or, the interconnected first joint and second joint are sealed to each other.

4. The frame as described in any one of claims 1 to 3, characterized in that, The first connector has two first connecting ends arranged opposite each other. The end face shape of the first connecting end is adapted to the cross-sectional shape of the corresponding beam segment. The two first connecting ends are respectively provided with first plugs, and the two first plugs are respectively adapted to be inserted into the two adjacent beam segments.

5. The framework as described in claim 4, characterized in that, The first connecting end is welded to the beam segment.

6. The frame as described in any one of claims 1 to 5, characterized in that, The second connector has a second connecting end, the end face shape of which is adapted to the cross-sectional shape of the second beam, and a second plug protruding from the second connecting end, which is adapted to be inserted into the corresponding second beam.

7. The framework as described in claim 6, characterized in that, The second connecting end is welded to the second beam.

8. The frame as described in any one of claims 1 to 7, characterized in that, The first connecting part is provided with a cavity, and the second connecting part is adapted to be inserted into the cavity.

9. The framework as described in claim 8, characterized in that, The cavity wall is provided with a first connecting hole, and the second connecting 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 connecting part and the second connecting part.

10. The frame as described in claim 8 or 9, characterized in that, The cavity has a first inner wall surface that is angled to the length direction of the corresponding first beam, and the second connecting part has a first side surface that is parallel to the length direction of the corresponding second beam. In the first joint and the second joint that are connected to each other, the first inner wall surface abuts against the first side surface.

11. The framework as described in claim 10, characterized in that, The cavity has two first inner wall surfaces spaced apart along the length of the corresponding first beam, and the second connecting part has two first side surfaces disposed opposite to each other. Among the first joint and the second joint that are connected to each other, the second connecting part is sandwiched between the two first inner wall surfaces.

12. The frame as described in claim 10 or 11, characterized in that, The cavity also has a second inner wall surface connected between the two first inner wall surfaces, the second connecting part has a second side surface connected between the two first side surfaces, the first beam has an outer plane parallel to its length direction, the second inner wall surface is set at an angle to the outer plane, and in the first joint and the second joint that are connected to each other, the second inner wall surface abuts against the second side surface.

13. The frame as described in any one of claims 8 to 12, characterized in that, The second connecting portions of the two second connectors are connected to connect the two second beams, and the two interconnected second connecting portions are fitted into the cavity so that the two second beams are integrally connected to the middle of a first beam.

14. The framework as described in claim 13, characterized in that, The second connecting part also has a positioning wedge surface, and in the two interconnected second joints, the two positioning wedge surfaces abut against each other so that the two second beams are connected at a first preset angle.

15. The frame as described in claim 14, characterized in that, The plane containing the positioning wedge has a positioning angle with the length direction of the corresponding second beam, and the sum of the two positioning angles of the two interconnected second joints is equal to the first preset angle.

16. The framework as described in claim 15, characterized in that, The first preset angle is a right angle, and the positioning angle is a 45° angle.

17. The frame as described in any one of claims 14 to 16, characterized in that, The second connection portion includes a first sub-part and a second sub-part. In the two interconnected second connectors, the first sub-part of one second connector is connected to the second sub-part of the other second connector.

18. The frame as described in claim 17, characterized in that, The first sub-part has a recessed platform on its outer surface. In the two interconnected second connectors, at least a portion of the second sub-part of one second connector is embedded in the recessed platform of the other second connector, so that the outer surfaces of the interconnected first sub-part and the outer surfaces of the second sub-part are flush.

19. The frame as described in claim 18, characterized in that, The sinking platform is provided with a third connecting hole, and the second sub-part is provided with a fourth connecting hole. The third connecting hole and the fourth connecting hole are used to cooperate with the connector to connect the first sub-part and the second sub-part.

20. The frame as described in any one of claims 13 to 19, characterized in that, The cavity has a second inner wall surface and a third inner wall surface that are continuously arranged. The second connecting part has a second side surface. Among the two second connectors and one first connector that are connected to each other, the second side surface of one second connector abuts against the second inner wall surface, and the second side surface of the other second connector abuts against the third inner wall surface.

21. The framework as described in claim 20, characterized in that, The second inner wall surface is provided with a protrusion, the protrusion extends from the second inner wall surface to the third inner wall surface, and the opposite ends of the protrusion extend outward from the opposite sides of the cavity to connect with the outer surface of the second connector. The second side is provided with a groove. In the two interconnected second connectors, one end of the two grooves is connected, and the other end of the two grooves extends to connect with the outer surface of the corresponding second connector. In the two interconnected second connectors and one second connector, the protrusion is sealed and engaged with the two grooves.

22. The frame as described in any one of claims 1 to 21, characterized in that, The frame has at least two parallel first beams and at least one second beam, with a second joint connected to each of the opposite ends of the at least one second beam, and the two second joints connected to the same second beam are connected to the two second joints of the two parallel first beams.

23. The frame as described in any one of claims 1 to 22, characterized in that, The framework includes: The outer frame is a cubic frame formed by connecting twelve connecting beams, wherein the four parallel connecting beams of the outer frame are the first beams; and A partition frame is connected to the middle of the outer frame. The partition frame is a square frame formed by connecting four second beams end to end through second joints. The second joints at the four corners of the partition frame are connected one-to-one with the second joints of the four parallel first beams of the outer frame.

24. The framework as described in claim 23, characterized in that, The frame includes multiple partition frames, which are connected to the outer frame in parallel with spacing.

25. A connector assembly, characterized in that, include: The first joint, with its opposite ends respectively used for connection to a beam segment; The second connector is used to connect to the second beam; The first connector has a first connecting portion, and the second connector has a second connecting portion. The second connecting portion is connected to the first connecting portion to connect the second beam connected to the second connector to the two beam segments connected by the first connector.

26. The connector assembly as claimed in claim 25, characterized in that, The first connector has two first connecting ends arranged opposite to each other. The end faces of the two first connecting ends are respectively adapted to abut against the end faces of the corresponding beam segments. The two first connecting ends are respectively provided with first plugs, and the two first plugs are respectively adapted to be inserted into the corresponding beam segments. And / or, the second connector has a second connecting end, the end face of the second connecting end being adapted to abut against the end face of the second beam, the second connecting end being provided with a second plug, the second plug being adapted to be inserted into the second beam.

27. The connector assembly as claimed in claim 25 or 26, characterized in that, The outer surfaces of the first connector and the second connector can be connected to each other to form a continuous surface.

28. The connector assembly as described in any one of claims 25 to 27, characterized in that, The first connecting part is provided with a cavity, and the second connecting part is adapted to be inserted into the cavity.

29. The connector assembly as claimed in claim 28, characterized in that, The cavity wall is provided with a first connecting hole, and the second connecting 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 connecting part and the second connecting part.

30. The connector assembly as claimed in claim 28 or 29, characterized in that, The cavity has two first inner wall surfaces arranged at intervals. When the first connector is connected to the second connector, the second connecting part is sandwiched between the two first inner wall surfaces. And / or, the cavity further has a second inner wall surface connected between the two first inner wall surfaces, and when the first connector is connected to the second connector, one side of the second connecting portion abuts against the second inner wall surface.

31. The connector assembly as described in any one of claims 28 to 30, characterized in that, The connector assembly includes a first connector and two second connectors, the two second connectors being able to be connected via their respective second connecting portions, and the two interconnected second connecting portions being adapted to be inserted into the cavity.

32. The connector assembly as claimed in claim 31, characterized in that, The second connecting part also has a positioning wedge surface. When the two second joints are connected, the two positioning wedge surfaces abut against each other so that the two second beams connected by the two second joints can have a first preset angle.

33. The connector assembly as claimed in claim 32, characterized in that, The plane containing the positioning wedge has a positioning angle with the first direction. The sum of the two positioning angles of the two interconnected second joints is equal to the first preset angle. The first direction is the length direction of the second beam when the second joint is connected to the second beam.

34. The connector assembly as claimed in claim 33, characterized in that, The cavity has a continuously arranged second inner wall surface and a third inner wall surface. When the first connector is connected to two interconnected second connectors, one side of the second connector abuts against the second inner wall surface, and one side of the other second connector abuts against the third inner wall surface. And / or, the second inner wall surface is provided with a protrusion, the protrusion extends from the second inner wall surface to the third inner wall surface, and the opposite ends of the protrusion extend outward from the opposite sides of the cavity to connect with the outer surface of the second connector. The side of the second connecting part is provided with a groove. When the two second connectors are connected, one end of the two grooves is connected, and the other end of the two grooves extends to connect with the outer surface of the corresponding second connector. When one second connector is connected to two interconnected second connectors, the protrusion and the two grooves are sealed and engaged.

35. A method for fabricating a frame, characterized in that, include: At least two beam segments are connected using the first joint as described in any one of claims 1 to 22 to obtain the first beam having the first joint; A cubic-shaped outer frame is formed by connecting twelve connecting beams of any one of 1 to 22, and in the outer frame, at least two of the first beams having the first joint are arranged in parallel. Using the second beam as described in any one of claims 1 to 22, and connecting a second joint to each of the opposite ends of the second beam, a second beam having the second joint is obtained; Using at least one second beam, the second joints connected to opposite ends of the second beam are connected to the two first joints of the two parallel first beams of the outer frame, so as to connect a second beam between the two parallel first beams of the outer frame.

36. A method for fabricating a frame, characterized in that, include: At least two beam segments are connected using the first joint as described in any one of claims 1 to 22 to obtain the first beam having the first joint; A cubic-shaped outer frame is formed by connecting twelve connecting beams of any one of 1 to 22, and in the outer frame, at least four of the first beams having the first joint are arranged in parallel. Using the second beam as described in any one of claims 1 to 23, and connecting a second joint to each of the opposite ends of the second beam, a second beam with second joints is obtained; Using four second beams, and connecting the four second beams end to end through the second joint to obtain a square-shaped dividing frame; The second joints at the four corners of the partition frame are connected one-to-one with the four first joints of the four parallel first beams of the outer frame to connect the partition frame to the middle of the outer frame.

37. An energy storage device, comprising a housing and one or more battery clusters disposed within the housing, characterized in that, The enclosure includes at least one frame as described in any one of claims 1 to 24, and / or the enclosure includes at least one frame obtained using the frame fabrication method as described in claim 35 or 36.

38. An energy storage system, characterized in that, It includes a power conversion device and an energy storage device as described in claim 37, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

39. A charging network, characterized in that, It includes a charging pile and an energy storage device as described in claim 37 or an energy storage system as described in claim 38, wherein the energy storage device is used to provide electrical energy to the charging pile.

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