Battery device, energy storage device, energy storage system, power utilization device and charging network

Abstract

The utility model belongs to the technical field of battery production, and provides a battery device, an energy storage device, an energy storage system, a power utilization device and a charging network, and the battery device comprises a battery monomer assembly, a box body and a structural beam assembly; wherein the box body is provided with an accommodating space for accommodating the battery monomer assembly; the structural beam assembly comprises a beam body and a supporting piece which are both contained in the containing space, the beam body extends in the preset direction, a first side wall body is arranged on one side, in the preset direction, of the beam body, the supporting piece extends in the preset direction and is connected with the first side wall body, and the supporting piece is connected to the box body; and the supporting piece and the battery monomer assembly are arranged on the two sides of the beam body in a back-to-back manner. The utility model aims to improve the stability of the beam body.

Description

Technical Field

[0001] The present application relates to the field of battery production technology, and in particular to a battery device, an energy storage device, an energy storage system, an electrical device, and a charging network. Background Art

[0002] When the battery device generates heat during charging and discharging, the battery cell assembly will expand due to the heat. Therefore, an expansion beam is usually set on the box body. The expansion beam can produce deformation. When the battery cell assembly expands, the expansion beam is squeezed to cope with the volume change of the battery cell assembly. It can be seen that the expansion beam will be subjected to greater extrusion stress.

[0003] Generally, the expansion beam has a certain extension length and is subjected to extrusion force along the entire extension length of the expansion beam. Therefore, the expansion beam is very likely to bend, thereby affecting the stability of the expansion beam on the box. Utility Model Content

[0004] The purpose of this application is to provide a battery device, an energy storage device, an energy storage system, an electrical device and a charging network, aiming to solve the technical problem of poor stability of the beam body on the box body.

[0005] In a first aspect, the present application provides a battery device, comprising:

[0006] Battery cell assembly;

[0007] The box body has a storage space for accommodating the battery cell assembly;

[0008] The structural beam assembly includes a beam body and a support member, both of which are accommodated in the accommodating space. The beam body extends along a preset direction, and has a first side wall on one side along the preset direction. The support member extends along the preset direction and is connected to the first side wall. The support member is connected to the box body, and the support member and the battery cell assembly are arranged on both sides of the beam body opposite to each other.

[0009] In this embodiment, by arranging a beam body and a support member in the box body, and making the support member and the battery cell assembly able to be located on both sides of the beam body respectively, when the battery cell assembly heats up and expands, the beam body can absorb and disperse the extrusion force, and the support member can form a supporting force on the beam body in the opposite direction to the extrusion force, thereby enhancing the supporting effect on the beam body, which is beneficial to reducing the bending deformation of the beam body caused by the extrusion force and improving the stability of the connection between the structural beam assembly and the box body.

[0010] In one embodiment, the box body includes a first box wall body; the support member includes a first connecting portion and a protruding portion, both of which are extended along a preset direction, the preset direction is parallel to the surface of the first box wall body, the first connecting portion is connected to the first box wall body, the protruding portion is connected to the first connecting portion, and the protruding portion is protruded on the first connecting portion in a direction away from the first box wall body.

[0011] In this embodiment, the support member is connected to the box body through the first connecting portion, and a certain contact area is formed between the protruding portion and the beam body, thereby improving the supporting effect of the support member on the beam body and improving the support stability.

[0012] In one embodiment, the raised portion includes a support arm body that is bent outward in a direction away from the first box wall body, the support arm body is extended along a preset direction, a support cavity is formed between the support arm body and the first box wall body, and the support arm body is connected to the beam body; the first connecting portion is located on the side of the support arm body away from the beam body and is connected to the support arm body.

[0013] In this embodiment, the raised portion is prepared by adopting an outwardly bent support arm body, so that the support arm body and the first box wall body are jointly arranged to form a support cavity. The support cavity can absorb and disperse stress, thereby improving the support effect of the support arm body on the beam body, reducing stress concentration, and improving support stability.

[0014] In one embodiment, the support arm includes a first sub-wall extending along a preset direction, and the first sub-wall is fitted to the first side wall.

[0015] In this embodiment, by providing a first sub-wall body that is in contact with the first side wall body, it is beneficial to increase the support area between the support arm body and the beam body, thereby improving the supporting capacity of the support arm body to the beam body and improving the support stability.

[0016] In one embodiment, the structural beam assembly further includes a bonding structure connected between the first sub-wall body and the first side wall body.

[0017] In this embodiment, the bonding structure can bond and fix the support arm body to the beam body, thereby enhancing the connection strength between the support arm body and the beam body, and further improving the support strength and support stability of the beam body.

[0018] In one embodiment, the support arm body also includes a second sub-wall body and a third sub-wall body, both of which are extended along a preset direction. The second sub-wall body is connected to the first sub-wall body, and the third sub-wall body is connected between the second sub-wall body and the first connecting part. The first sub-wall body, the second sub-wall body, the third sub-wall body and the first box wall body are jointly arranged to form a support cavity.

[0019] In this embodiment, the first sub-wall body, the second sub-wall body, the third sub-wall body and the first box wall body are jointly arranged to form a support cavity, so that the entire support arm body can be prepared using a profile structure. The overall structure of the support arm body is simple and easy to manufacture, which is conducive to reducing the overall weight and facilitating the lightweighting of the battery device.

[0020] In one embodiment, the support member also includes a second connecting portion extending along a preset direction, the second connecting portion and the first connecting portion are respectively located on both sides of the protruding portion, and the second connecting portion is connected to the protruding portion, the second connecting portion is connected to the first box wall, and the beam body abuts against the second connecting portion.

[0021] In this embodiment, by providing a second connecting portion, the second connecting portion is connected to the first box wall, thereby enhancing the connection strength between the support member and the box body, further improving the supporting capacity of the support member for the beam body, and improving the reliability of the connection between the beam body and the box body.

[0022] In one embodiment, the second connecting portion is plate-shaped and is arranged to fit and connect with the first box wall.

[0023] In this embodiment, the plate-shaped second connecting portion can increase the connection area between the support member and the first box wall, enhance the connection strength between the support member and the box body, and can support the beam body.

[0024] In one embodiment, the first connecting portion is plate-shaped and is arranged to fit and connect with the first box wall.

[0025] In this embodiment, the plate-shaped first connecting portion can increase the connection area between the support member and the first box wall, thereby enhancing the connection strength between the support member and the box body.

[0026] In one embodiment, the first connecting portion is fixed to the first box wall by welding.

[0027] In this embodiment, welding is adopted to enhance the firmness of the connection between the first connecting portion and the box body, and facilitates operation without adding other components, which is conducive to simplifying the structure and reducing production costs.

[0028] In one embodiment, the second connecting portion is fixed to the first box wall by welding.

[0029] In this embodiment, welding is adopted to enhance the firmness of the connection between the second connection parts and the box body, and facilitates operation without adding other components, which is conducive to simplifying the structure and reducing production costs.

[0030] In one embodiment, the structural beam assembly further includes a first locking assembly, which is connected to the support member and the beam body respectively.

[0031] In this embodiment, by adding a first locking component, the protrusion and the beam body are further connected and fixed, thereby improving the connection strength between the support member and the beam body, which is beneficial to improving the supporting stability of the support member on the beam body.

[0032] In one embodiment, a locking arm is protruded and connected to the first side wall; the locking arm is fitted with the support member, and the first locking assembly is connected to the locking arm and the support member respectively.

[0033] In this embodiment, by providing a locking arm on the first side wall, the first locking assembly is connected between the locking arm and the support member, thereby facilitating installation and disassembly, not easily damaging the main structure of the beam body, and protecting the beam body.

[0034] In one embodiment, the structural beam assembly further includes a first locking assembly, and the first locking assembly is connected to the second sub-wall and the beam body respectively.

[0035] In this embodiment, by adding a first locking component, the second sub-wall body and the beam body are further connected and fixed, thereby improving the connection firmness between the support member and the beam body, which is beneficial to improving the supporting stability of the support member on the beam body.

[0036] In one embodiment, a locking arm is protruded and connected to the first side wall; the locking arm is fitted with the second sub-wall, and the first locking assembly is connected to the locking arm and the second sub-wall respectively.

[0037] In this embodiment, by providing a locking arm on the first side wall, the first locking assembly is connected between the locking arm and the second sub-wall, thereby facilitating installation and disassembly, and not easily damaging the main structure of the beam body, thereby protecting the beam body.

[0038] In one embodiment, the battery device includes at least two structural beam assemblies arranged at intervals, each structural beam assembly is connected to the first box wall of the box body; the battery device also includes at least one fixing strap, and the two ends of each fixing strap are respectively connected to the end of the beam body in any two structural beam assemblies away from the first box wall.

[0039] In this embodiment, by providing a fixing belt, multiple structural beam assemblies can form an integral structure, thereby improving the compactness of the overall structure and enhancing the connection strength and rigidity between the various structural beams, which is beneficial to reducing the deformation probability of the beam body and, to a certain extent, can play a role in limiting the battery cell assembly.

[0040] In one embodiment, the battery device further includes a plurality of second locking components, and any end of the fixing belt is connected to the beam body via at least one second locking component.

[0041] In this embodiment, the fixing belt is detachably connected to the beam body via the second locking assembly, making installation and removal of the fixing belt and the beam body more convenient.

[0042] In one embodiment, the second locking assembly includes a locking seat and a locking member, the locking seat is connected to the beam body, and the locking member is respectively connected to the locking seat and the fixing belt.

[0043] In this embodiment, by providing a locking seat, the fixing belt is not directly connected to the beam body, and the tensile force on the fixing belt does not directly act on the beam body. Instead, the stress is dispersed and absorbed by the locking seat, thereby protecting the beam body.

[0044] In a second aspect, the present application provides an energy storage device comprising a plurality of battery devices as described above, the battery devices being used to store or provide electrical energy.

[0045] In a third aspect, the present application provides an energy storage system, comprising a power conversion device and the above-mentioned energy storage device, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0046] In a fourth aspect, the present application provides an electrical device, comprising any one of the above-mentioned battery devices, the above-mentioned energy storage devices or the above-mentioned energy storage systems, wherein the battery device is used to store or provide electrical energy.

[0047] In a fifth aspect, the present application provides a charging network, comprising a charging pile and the above-mentioned energy storage device or the above-mentioned energy storage system, wherein the energy storage device is used to provide electrical energy to the charging pile.

[0048] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0050] Figure 1 A schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0051] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;

[0052] Figure 3 Schematic diagram of the connection between the box and the structural beam assembly in the battery device provided in some embodiments of the present application Figure 1 ;

[0053] Figure 4 for Figure 3 AA cross-sectional view;

[0054] Figure 5 for Figure 4 A magnified view of position B in FIG;

[0055] Figure 6 for Figure 5 A schematic diagram of the structure of the support member;

[0056] Figure 7 for Figure 3 Axonometric drawing of

[0057] Figure 8 A schematic diagram of the structure of the connection between the beam body, the first locking assembly, and the second locking assembly in the battery device provided in some embodiments of the present application;

[0058] Figure 9 for Figure 7 Schematic diagram of the decomposition structure Figure 1 ;

[0059] Figure 10 for Figure 7 Schematic diagram of the decomposition structure Figure 2 ;

[0060] Figure 11 Schematic diagram of the connection between the box and the structural beam assembly in the battery device provided in some embodiments of the present application Figure 2 ;

[0061] Figure 12 The main view of the beam body provided in some embodiments of the present application Figure 1 ;

[0062] Figure 13 The main view of the beam body provided in some embodiments of the present application Figure 2 ;

[0063] Figure 14 A schematic diagram of the three-dimensional structure of a beam body provided in some embodiments of the present application;

[0064] Figure 15 for Figure 14 A partial enlarged view of the middle C position;

[0065] Figure 16 A schematic structural diagram of a beam body manufacturing device provided in some embodiments of the present application;

[0066] Figure 17 for Figure 16 Schematic diagram of the structure of the preforming mold;

[0067] Figure 18 for Figure 16 Schematic diagram of the structure of the mid-shaped component;

[0068] Figure 19 for Figure 16 Schematic diagram of the structure of the traction forming component.

[0069] Description of reference numerals:

[0070] 1000, vehicle; 1100, battery device; 1110, box; 1111, first part; 1112, second part; 1113, accommodating space; 1114, first box wall; 1120, battery cell assembly; 1130, structural beam assembly; 1131, beam body; 11311, cavity; 11312, first side wall; 11313, third side wall; 11314, second side wall; 11315, fourth side wall; 11 316, locking arm; 11317, rib; 11318, supporting structure layer; 113181, core wire; 11319, cloth layer; 113191, first fiber body; 113192, second fiber body; 113193, third fiber body; 113194, fourth fiber body; 113195, first layer; 113196, second layer; 11320, curing agent; 1132, support member; 11321, first connecting portion; 11322, Raised portion; 113221, support arm; 113222, first sub-wall; 113223, second sub-wall; 113224, third sub-wall; 11323, second connecting portion; 1133, first locking assembly; 1134, support cavity; 1135, adhesive structure; 1140, fixing belt; 1150, second locking assembly; 1151, locking seat; 1152, locking member; 1160, support body; X, preset direction; 2000, Beam body manufacturing device; 2100, first feeding component; 2200, second feeding component; 2300, preforming mold; 2310, forming frame; 2311, forming sub-channel; 23111, first sub-channel; 23112, second sub-channel; 2400, shaping component; 2410, shaping mold; 2420, third feeding component; 2430, pouring channel; 2440, shaping cavity; 2500, traction shaping component; 2510, traction cavity. DETAILED DESCRIPTION

[0071] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0072] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0073] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0074] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0075] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0076] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0077] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0078] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0079] A battery device may include one or more battery cell assemblies to provide voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or in series via a busbar.

[0080] A battery device can be a battery pack, which generally includes a housing and one or more battery cell assemblies housed within the housing. When the battery device generates heat during charging and discharging, the battery cell assemblies expand due to the heat. The expanded battery cell assemblies can cause stress or damage to the housing, leading to deformation of the housing. Therefore, in related art, expansion beams are typically provided within the housing. The expansion beams refer to the beam body described below. The expansion beams themselves are capable of deformation or deformation. When the battery cell assemblies expand, they squeeze the expansion beams. The deformation of the expansion beams absorbs and disperses the stress generated by thermal expansion, thereby addressing the volume changes and stress damage of the battery cell assemblies. Consequently, the expansion beams are subject to significant compressive stress.

[0081] Generally, the expansion beam has a certain extension length and is subjected to extrusion force along the entire extension length. Therefore, the expansion beam is very prone to bending, which affects the stability of the expansion beam on the box. For example, the expansion beam bends in the extension length direction. The bent expansion beam is prone to stress and interference problems on the box, causing deformation of the box and affecting the appearance and use of the battery device.

[0082] Therefore, the present application provides a battery device. The battery device in this example arranges a structural beam assembly in a box body so that the support member in the structural beam assembly is connected to the beam body (i.e., the expansion beam), and the support member is located on the side of the beam body facing away from the battery cell assembly, so that the support member can support the beam body on the opposite side of the force direction of the beam body to reduce the deformation of the beam body; in addition, the support member is extended along the extension direction of the beam body and can also support the entire extension length of the beam body. Then, when any position on the extension length of the beam body is subjected to extrusion force, the support member can also provide sufficient supporting force, which is beneficial to reduce the deformation of the beam body, improve the reliability of the connection between the beam body and the box body, and improve the stability of the connection.

[0083] Specifically, refer to Figure 2 As shown, an embodiment of the present application provides a battery device 1100, which includes one or more battery cell assemblies 1120. The battery device 1100 disclosed in the embodiment of the present application can be used in an electrical device that uses the battery device 1100 as a power source or various energy storage devices and energy storage systems that use the battery device 1100 as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a portable device, a laptop computer, an electric toy, an electric tool, an electric car, a vehicle 1000, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0084] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0085] Please refer to Figure 1 , Figure 1 A schematic structural diagram of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 1100 is provided inside the vehicle 1000, and the battery device 1100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 1100 may be used to power the vehicle 1000, for example, the battery device 1100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller and a motor, and the controller is used to control the battery device 1100 to power the motor, for example, for starting, navigating and operating power requirements of the vehicle 1000 during driving.

[0086] In some embodiments of the present application, the battery device 1100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0087] Please refer to Figure 2 As shown, Figure 2 An exploded view of a battery device 1100 provided for some embodiments of the present application. The battery device 1100 includes a housing 1110 and a battery cell assembly 1120. A housing 1113 is formed in the housing 1110. The battery cell assembly 1120 is accommodated in the housing 1113. The battery cell assembly 1120 is often formed by arranging a plurality of battery cells. Alternatively, the battery cell assembly 1120 can also be a battery module (Battery Module), which is an independent module arranged and fixed by a plurality of battery cells. As an example, a battery module can be formed by bundling a plurality of battery cells by cable ties. Among them, the housing 1110 is used to provide an accommodating space 1113 for the battery cell assembly 1120, and the housing 1110 can adopt a variety of structures.

[0088] A battery cell is the smallest unit that makes up the battery device 1100. Each battery cell can be a secondary battery cell or a primary battery cell; it can also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited to these. A battery cell can be cylindrical, flat, rectangular, or have other shapes.

[0089] According to some embodiments of the present application, referring to Figure 2 and Figure 3 as well as Figure 4 As shown, an embodiment of the present application provides a battery device 1100, which includes a battery cell assembly 1120, a box body 1110 and a structural beam assembly 1130; wherein the box body 1110 has a accommodating space 1113 for accommodating the battery cell assembly 1120; the structural beam assembly 1130 includes a beam body 1131 and a support member 1132, both of which are accommodated in the accommodating space 1113, the beam body 1131 extends along a preset direction X, and the beam body 1131 has a first side wall 11312 on one side along the preset direction X, the support member 1132 extends along the preset direction X and is connected to the first side wall 11312, the support member 1132 is connected to the box body 1110, and the support member 1132 is arranged on both sides of the beam body 1131 opposite to the battery cell assembly 1120.

[0090] Specifically, the housing 1110 is used to accommodate the battery cell assembly 1120. Therefore, the housing 1110 may include a first portion 1111 and a second portion 1112. The first portion 1111 and the second portion 1112 overlap each other, and the first portion 1111 and the second portion 1112 jointly define a housing space 1113 for accommodating the battery cell assembly 1120. The second portion 1112 may be a hollow structure with one end open, and the first portion 1111 may be a plate-like structure. The first portion 1111 overlaps the open side of the second portion 1112, so that the first portion 1111 and the second portion 1112 jointly define the housing space 1113. Alternatively, the first portion 1111 and the second portion 1112 may both be hollow structures with one end open, with the open side of the first portion 1111 overlapping the open side of the second portion 1112. Of course, the housing 1110 formed by the first portion 1111 and the second portion 1112 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0091] The structural beam assembly 1130 is connected to the box body 1110 and is used to abut against the battery cell assembly 1120. When the battery cell assembly 1120 expands due to heat, the battery cell assembly 1120 squeezes the structural beam assembly 1130, and the structural beam assembly 1130 absorbs and disperses stress by deforming itself.

[0092] Specifically, structural beam assembly 1130 includes a beam body 1131 and a support member 1132. Beam body 1131 is a columnar or cylindrical structure extending along a predetermined direction X, which is the length (or extension) of beam body 1131. Beam body 1131 is an expansion beam. Beam body 1131 and battery cell assembly 1120 are both located within accommodating space 1113. At least some of the battery cells in battery cell assembly 1120 are positioned opposite the outer surface of beam body 1131. The surfaces of the battery cells and the outer surface of beam body 1131 may abut or form a small deformation gap to accommodate expansion of the battery cells.

[0093] The beam body 1131 has a cavity 11311 formed within it. This cavity 11311 extends along the entire length of the beam body 1131. This cavity 11311 allows the beam body 1131 to deform under compressive forces, thereby absorbing and dissipating stress. It also absorbs the expansion and deformation of the battery cell assembly 1120. The beam body 1131 can be made of a composite material. The composite material may include fiber materials and resin materials. The resin matrix is ​​responsible for transferring stress and providing environmental adaptability and durability. The fiber material can be unidirectional continuous fiber, and the resin material can be polyurethane, epoxy, vinyl, etc. The fiber material primarily increases the material's strength and rigidity while also being able to withstand a certain load. The composite material may also include fillers such as glass powder, talc, and carbon black to improve the composite's performance, such as reducing cost, increasing wear resistance, or improving electromagnetic properties. Functional additives such as curing agents, catalysts, flame retardants, and UV stabilizers may also be included in the composite material, along with other chemical substances used to improve material properties.

[0094] The box body 1110 may include side walls, a top wall, and a bottom wall, and both ends of the beam body 1131 may extend to the side walls of the box body 1110. For example, when the exterior of the box body 1110 is rectangular, the box body 1110 has four side walls, and the beam body 1131 may be arranged parallel to one side wall of the box body 1110. One or more structural beam assemblies 1130 may be provided, and the beam bodies 1131 in multiple structural beam assemblies 1130 may be arranged parallel to each other and spaced apart.

[0095] On the beam body 1131 , first side walls 11312 may be formed on both sides along the preset direction X. The first side walls 11312 are walls facing away from the battery cell assembly 1120 . The first side walls 11312 may be flat or bent.

[0096] The support member 1132 is connected to the box body 1110 . The support member 1132 and the box body 1110 can be connected by welding or by fasteners. The support member 1132 is also connected to the first side wall 11312 of the beam body 1131 .

[0097] The support member 1132 extends along a predetermined direction X. The extended length of the support member 1132 is less than or equal to the extended length of the beam body 1131. The extended length of the support member 1132 is defined as L1, and the extended length of the beam body 1131 is defined as L2. Then, L1 ≤ L2. For example, L1 = 1 / 3 L2, or L1 = 1 / 2 L2, or L1 = 2 / 3 L2, or L1 = L2. When the extended length of the support member 1132 is less than the extended length of the beam body 1131, the support member 1132 may be located in the middle region of the extended length direction of the beam body 1131.

[0098] Because the support member 1132 is connected to the first side wall 11312 of the beam body 1131, it can be seen that the support member 1132 is disposed away from the battery cell assembly 1120. In other words, the support member 1132 and the battery cell assembly 1120 are respectively disposed on either side of the beam body 1131. When the battery cell assembly 1120 expands and compresses the beam body 1131, the support member 1132 provides a supporting force to the beam body 1131 in a direction opposite to the compressive force, thereby providing sufficient support for the beam body 1131 and preventing the beam body 1131 from bending along its extended length.

[0099] In this embodiment, by arranging the beam body 1131 and the support member 1132 in the box body 1110, and making the support member 1132 and the battery cell assembly 1120 able to be located on both sides of the beam body 1131 respectively, when the battery cell assembly 1120 heats up and expands, the beam body 1131 can absorb and disperse the extrusion force, and the support member 1132 can form a supporting force in the opposite direction to the extrusion force on the beam body 1131, thereby enhancing the supporting effect on the beam body 1131, which is beneficial to reducing the bending deformation of the beam body 1131 under the action of the extrusion force, and improving the stability of the connection between the structural beam assembly 1130 and the box body 1110.

[0100] In some embodiments, reference Figure 3-5 As shown, a plurality of ribs 11317 (or ribs) may be provided inside the cavity 11311 , the edges of the ribs 11317 being connected to the cavity wall of the cavity 11311 , and the plurality of ribs 11317 are arranged at intervals within the cavity 11311 .

[0101] In some embodiments, reference Figure 3-5 As shown, the beam body 1131 also has a second side wall 11314. Along the preset direction X, the first side wall 11312 and the second side wall 11314 are respectively located on both sides of the beam body 1131. The second side wall 11314 is used to be opposite to or abut against the battery cell assembly 1120. The second side wall 11314 can be flat or bent, etc. The first side wall 11312 and the second side wall 11314 are arranged back to back.

[0102] In some embodiments, reference Figure 3-5 As shown, the box body 1110 includes a first box wall body 1114; the support member 1132 includes a first connecting portion 11321 and a protruding portion 11322, both of which are extended along a preset direction X. The preset direction X is parallel to the surface of the first box wall body 1114. The first connecting portion 11321 is connected to the first box wall body 1114, and the protruding portion 11322 is connected to the first connecting portion 11321, and the protruding portion 11322 is protruded from the first connecting portion 11321 in a direction away from the first box wall body 1114.

[0103] Since the box body 1110 may include a side wall, a top wall and a bottom wall, the first box wall 1114 may refer to any one of the side wall, the top wall or the bottom wall. In this example, the first box wall 1114 is taken as an example of a side wall of the box body 1110, and it is assumed that the wall surface (inner wall surface) of the first box wall 1114 facing the accommodating space 1113 is a plane. Of course, the wall surface of the first box wall 1114 may also be a curved surface.

[0104] In the support member 1132, the first connecting portion 11321 is used to be fixedly or detachably connected to the first box wall 1114. For example, the first connecting portion 11321 and the first box wall 1114 are connected by welding, fasteners, etc. The first connecting portion 11321 can adopt a plate-like structure, a shell structure, etc. The first connecting portion 11321 is arranged to extend along a predetermined direction X. For example, the first connecting portion 11321 is in the shape of a plate, so that the plate surface of the first connecting portion 11321 is arranged to be in contact with the surface of the first box wall 1114. The first connecting portion 11321 and the first box wall 1114 are fixedly connected by spot welding.

[0105] The raised portion 11322 in the support member 1132 is connected to the first connecting portion 11321. The raised portion 11322 can be an integrally formed structural member with the first connecting portion 11321. Alternatively, the raised portion 11322 can be fixedly or detachably connected to the first connecting portion 11321. The raised portion 11322 can be a plate-like structure, a frame structure, a solid structure, or the like. The raised portion 11322 is protruded from the first connecting portion 11321 and extends outward from the position where it is connected to the first connecting portion 11321 in a direction away from the first connecting portion 11321 and the first box wall 1114. This creates a certain contact area when the raised portion 11322 contacts the first side wall 11312 of the beam body 1131, thereby increasing the contact area and improving the load-bearing capacity of the support member 1132. The raised portion 11322 is also extended along the preset direction X. It can be seen that in the preset direction X, the raised portion 11322 forms a contact area of ​​a certain length with the surface of the first side wall 11312 of the beam body 1131, so that the contact area between the raised portion 11322 and the first side wall 11312 is further increased, thereby further improving the bearing capacity of the support member 1132.

[0106] In this embodiment, the support member 1132 is connected to the box body 1110 through the first connecting portion 11321, and a certain contact area is formed between the protrusion 11322 and the beam body 1131, thereby improving the supporting effect of the support member 1132 on the beam body 1131 and improving the support stability.

[0107] In some embodiments, reference Figure 5 and Figure 6 As shown, the raised portion 11322 includes a support arm body 113221 that is bent outward in a direction away from the first box wall body 1114, and the support arm body 113221 is extended along a preset direction X. A support cavity 1134 is formed between the support arm body 113221 and the first box wall body 1114, and the support arm body 113221 is connected to the beam body 1131; the first connecting portion 11321 is located on the side of the support arm body 113221 away from the beam body 1131 and is connected to the support arm body 113221.

[0108] Specifically, the raised portion 11322 includes a support arm 113221, which extends along a preset direction X. Thus, along the preset direction X, the first connecting portion 11321 and the beam body 1131 are respectively located on either side of the support arm 113221. The support arm 113221 can be formed by bending a plate, and the support arm 113221 is bent to form a slot. Since the support arm 113221 extends along the preset direction X, it can be seen that the slot is a strip-shaped slot extending along the preset direction X. The first connecting portion 11321 is connected to the first box wall body 1114, so that the first box wall body 1114 is covered on the notch of the empty slot, thereby forming a support cavity 1134 between the first box wall body 1114 and the support arm body 113221. The support cavity 1134 can cause the support arm body 113221 to deform. The support arm body 113221 is connected to the beam body 1131. The connection method may include welding, fastener connection, etc. The support arm body 113221 can absorb and disperse the force from the beam body 1131, which is beneficial to reduce the stress concentration problem between the beam body 1131 and the support arm body 113221, and enhance the support stability of the support arm body 113221 on the beam body 1131.

[0109] In this embodiment, the raised portion 11322 is prepared by adopting an outwardly bent support arm body 113221, so that the support arm body 113221 and the first box wall body 1114 are jointly arranged to form a support cavity 1134. The support cavity 1134 can absorb and disperse stress, thereby improving the supporting effect of the support arm body 113221 on the beam body 1131, reducing stress concentration, and improving support stability.

[0110] In some embodiments, reference Figure 5 and Figure 6 As shown, the support arm body 113221 includes a first sub-wall body 113222 extending along a preset direction X, and the first sub-wall body 113222 is arranged to fit the first side wall body 11312 .

[0111] The first sub-wall body 113222 is a part of the support arm body 113221. The first sub-wall body 113222 can be prepared by a plate structure. The first sub-wall body 113222 can be arranged opposite to the first side wall body 11312. The surface of the first sub-wall body 113222 can be parallel to the surface of the first side wall body 11312, so that the first sub-wall body 113222 can be arranged in a fit with the first side wall body 11312.

[0112] The first sub-wall body 113222 is extended along the preset direction X. The extension length of the first sub-wall body 113222 may be less than or equal to the extension length of the first side wall body 11312. The greater the extension length of the first sub-wall body 113222, the larger the connection area between the first sub-wall body 113222 and the first side wall body 11312, and the greater the supporting bearing capacity of the first sub-wall body 113222 for the beam body 1131.

[0113] In this embodiment, by setting a first sub-wall body 113222 that is in contact with the first side wall body 11312, it is beneficial to increase the supporting area between the support arm body 113221 and the beam body 1131, thereby improving the supporting capacity of the support arm body 113221 for the beam body 1131 and improving the supporting stability.

[0114] In some embodiments, reference Figure 5 As shown, the structural beam assembly 1130 further includes a bonding structure 1135 , which is connected between the first sub-wall body 113222 and the first side wall body 11312 .

[0115] The adhesive structure 1135 plays a role in bonding and fixing. The adhesive structure 1135 can be a liquid adhesive that can be cured, a solid adhesive layer, etc. The adhesive structure 1135 can be continuously arranged along the preset direction X, or the adhesive structure 1135 can be intermittently arranged along the preset direction X.

[0116] In this embodiment, the bonding structure 1135 can bond and fix the support arm 113221 to the beam body 1131, thereby enhancing the connection strength between the support arm 113221 and the beam body 1131, and further improving the support strength and support stability of the beam body 1131.

[0117] In some embodiments, reference Figure 5 and Figure 6As shown, the support arm body 113221 also includes a second sub-wall body 113223 and a third sub-wall body 113224, both of which are extended along the preset direction X. The second sub-wall body 113223 is connected to the first sub-wall body 113222, and the third sub-wall body 113224 is connected between the second sub-wall body 113223 and the first connecting part 11321. The first sub-wall body 113222, the second sub-wall body 113223, the third sub-wall body 113224 and the first box wall body 1114 are jointly arranged to form a support cavity 1134.

[0118] Specifically, the second sub-wall body 113223 and the third sub-wall body 113224 can both be prepared by a plate structure, the first sub-wall body 113222, the second sub-wall body 113223 and the third sub-wall body 113224 are all extended along the preset direction X, the second sub-wall body 113223 can be set parallel to the first box wall body 1114, the first sub-wall body 113222, the second sub-wall body 113223 and the third sub-wall body 113224 can be an integrally formed structure, the support arm body 113221 as a whole can be prepared by bending and stamping, so that the support arm body 113221 is in contact with the first box wall body 1114, and the first box wall body 1114 and the first sub-wall body 113222, the second sub-wall body 113223, and the second sub-wall body 113223 are jointly surrounded to form a support cavity 1134.

[0119] As for the overall structure of the support member 1132, the first connecting portion 11321, the third sub-wall 113224, the second sub-wall 113223 and the first sub-wall 113222 are connected in sequence. The first connecting portion 11321 is connected to the first box wall 1114. The support arm 113221 formed by the third sub-wall 113224, the second sub-wall 113223 and the first sub-wall 113222 is buckled on the first box wall 1114. The first sub-wall 113222 is in contact with the first side wall 11312 on the beam body 1131, and the first sub-wall 113222 is in contact with the first side wall 11312. 312 are bonded and fixed by an adhesive structure 1135. It can be seen that the support member 1132 is fixed on the box body 1110. The support member 1132 can support the beam body 1131 at the side of the beam body 1131. The supporting force of the support member 1132 on the beam body 1131 is opposite to the squeezing force of the battery cell assembly 1120 on the beam body 1131, so that the support member 1132 can enhance the bearing capacity of the beam body 1131. The support member 1132 is extended along the length direction of the beam body 1131, which is beneficial to reduce the bending resistance of the beam body 1131 and improve the structural stability of the beam body 1131.

[0120] In this embodiment, the first sub-wall body 113222, the second sub-wall body 113223, the third sub-wall body 113224 and the first box wall body 1114 are jointly arranged to form a support cavity 1134, so that the support arm body 113221 as a whole can be prepared using a profile structure. The overall structure of the support arm body 113221 is simple and easy to manufacture, which is conducive to reducing the overall weight and contributing to the lightweighting of the battery device 1100.

[0121] In some embodiments, reference Figure 4 、 Figure 5 and Figure 6 As shown, the support member 1132 also includes a second connection portion 11323 extending along a preset direction X, the second connection portion 11323 and the first connection portion 11321 are respectively located on both sides of the raised portion 11322, and the second connection portion 11323 is connected to the raised portion 11322, the second connection portion 11323 is connected to the first box wall 1114, and the beam body 1131 abuts against the second connection portion 11323.

[0122] The second connection part 11323 in the support member 1132 is connected to the first box wall 1114 of the box body 1110. The second connection part 11323 and the first box wall 1114 can be connected in a fixed or detachable manner. For example, the second connection part 11323 and the first box wall 1114 are connected by welding or using fasteners.

[0123] The second connection part 11323 is connected to the raised part 11322. Specifically, the second connection part 11323 is connected to the third sub-wall body 113224 in the support arm body 113221. The first connection part 11321 and the second connection part 11323 are respectively located on both sides of the raised part 11322. When the raised part 11322 abuts against the beam body 1131, the beam body 1131 can abut against the second connection part 11323. That is to say, the second connection part 11323 is located between the beam body 1131 and the first box wall body 1114, so that the second connection part 11323 supports the beam body 1131.

[0124] In this embodiment, a second connecting portion 11323 is provided for connecting to the first box wall 1114, thereby enhancing the connection strength between the support member 1132 and the box body 1110, further improving the supporting capacity of the support member 1132 for the beam body 1131, and improving the reliability of the connection between the beam body 1131 and the box body 1110.

[0125] In some embodiments, reference Figure 5 and Figure 6 As shown, the second connection portion 11323 is plate-shaped, and the second connection portion 11323 is fitted and connected to the first box wall 1114 .

[0126] Specifically, the second connecting portion 11323 is a plate structure, and is in the shape of a flat plate. The second connecting portion 11323 is parallel to the first box wall 1114, and the plate surface of the second connecting portion 11323 is opposite to and in contact with the surface of the first box wall 1114. The beam body 1131 abuts against the surface of the second connecting portion 11323 facing away from the first box wall 1114.

[0127] In this embodiment, the plate-shaped second connecting portion 11323 can increase the connection area between the support member 1132 and the first box wall 1114, enhance the connection strength between the support member 1132 and the box body 1110, and support the beam body 1131.

[0128] In some embodiments, the second connection portion 11323 is fixed to the first box wall 1114 by welding.

[0129] Since the second connecting portion 11323 is plate-shaped and is arranged in close contact with the first box wall 1114, a larger contact area is formed between the second connecting portion 11323 and the first box wall 1114 in the preset direction X. The second connecting portion 11323 and the first box wall 1114 are welded along the preset direction X. The welding method can be spot welding, thereby increasing the fixed connection position between the second connecting portion 11323 and the first box wall 1114, increasing the connection area, and thus facilitating improving the connection strength.

[0130] In this embodiment, welding is adopted to enhance the firmness of the connection between the second connection portion 11323 and the box body 1110, and facilitates operation without adding other components, which is conducive to simplifying the structure and reducing production costs.

[0131] In some embodiments, reference Figure 5 and Figure 6 As shown, the first connection portion 11321 is plate-shaped, and the first connection portion 11321 is fitted and connected to the first box wall 1114 .

[0132] Specifically, the first connecting portion 11321 is a plate structure. The first connecting portion 11321 is flat and parallel to the first box wall 1114. The plate surface of the first connecting portion 11321 faces and fits against the surface of the first box wall 1114. The first connecting portion 11321 and the second connecting portion 11323 are both fitted and connected to the first box body 1110.

[0133] Therefore, it can be seen that the first connecting part 11321, the third sub-wall body 113224, the second sub-wall body 113223, the first sub-wall body 113222 and the second connecting part 11323 can all be plate-shaped. Therefore, the entire support member 1132 can be formed by stamping or bending the plate structure, and the support member 1132 can be prepared using a profile structure, which is convenient for production and reduces production costs.

[0134] In this embodiment, the plate-shaped first connecting portion 11321 can increase the connection area between the support member 1132 and the first box wall 1114 , thereby enhancing the connection strength between the support member 1132 and the box body 1110 .

[0135] In some embodiments, the first connection portion 11321 is fixed to the first box wall 1114 by welding.

[0136] Since the first connecting portion 11321 is plate-shaped and is arranged in close contact with the first box wall 1114, a larger contact area is formed between the first connecting portion 11321 and the first box wall 1114 in the preset direction X. The first connecting portion 11321 and the first box wall 1114 are welded along the preset direction X. The welding method can be spot welding, thereby increasing the fixed connection position between the first connecting portion 11321 and the first box wall 1114, increasing the connection area, and thus facilitating improving the connection strength.

[0137] In this embodiment, welding is adopted to enhance the firmness of the connection between the first connection portion 11321 and the box body 1110, and facilitates operation without adding other components, which is conducive to simplifying the structure and reducing production costs.

[0138] In some embodiments, reference Figure 4 、 Figure 5 and Figure 8 As shown, the structural beam assembly 1130 further includes a first locking assembly 1133 , which is connected to the protrusion 11322 and the beam body 1131 respectively.

[0139] The first locking assembly 1133 is connected between the protrusion 11322 of the support member 1132 and the beam body 1131 to connect and secure the protrusion 11322 to the beam body 1131. The first locking assembly 1133 can be a threaded fastener, a snap assembly, a plug assembly, etc. For example, the first locking assembly 1133 can be a bolt assembly.

[0140] The first locking assembly 1133 can be connected to the first sub-wall 113222 , the second sub-wall 113223 , or the third sub-wall 113224 of the protruding portion 11322 .

[0141] In this embodiment, by adding a first locking component 1133, the protrusion 11322 and the beam body 1131 are further connected and fixed, thereby improving the connection firmness between the support member 1132 and the beam body 1131, which is beneficial to improving the supporting stability of the support member 1132 on the beam body 1131.

[0142] In some embodiments, reference Figure 5 and Figure 8 As shown, a locking arm 11316 is protruded and connected to the first side wall 11312 ; the locking arm 11316 is fitted with the support member 1132 , and the first locking assembly 1133 is connected to the locking arm 11316 and the support member 1132 respectively.

[0143] Specifically, the beam body 1131 is a frame-type structural beam, and a cavity 11311 is formed in the middle of the beam body 1131. The beam body 1131 includes a plurality of side walls that are sequentially connected and arranged in a circle. For example, the beam body 1131 includes four side walls, namely a first side wall 11312, a third side wall 11313, a second side wall 11314 and a fourth side wall 11315 that are sequentially connected. The first side wall 11312 and the second side wall 11313 are connected in a circle. 314 are arranged relative to each other, and the third side wall body 11313 and the fourth side wall body 11315 are arranged relative to each other. Then, when the beam body 1131 is placed vertically, the first side wall body 11312 and the second side wall body 11314 can be understood as side walls, the third side wall body 11313 can be understood as the lower wall (or bottom wall), and the fourth side wall body 11315 can be understood as the upper wall (or top wall), so that the third side wall body 11313 is in contact with the second connecting part 11323.

[0144] Among them, a plurality of ribs 11317 are provided in the cavity 11311 of the beam body 1131, and at least one rib 11317 among the plurality of ribs 11317 is located on the back side of the locking arm 11316. The back side refers to the extension direction of the rib 11317 being opposite to the extension direction of the locking arm 11316, so that the rib 11317 can relieve and disperse the force at the position of the locking arm 11316, thereby improving the support effect on the locking arm 11316.

[0145] The locking arm 11316 can be fixedly or detachably connected to the first side wall 11312, or the locking arm 11316 can be integrally formed with the first side wall 11312. Since the support member 1132 abuts against the first side wall 11312, the first locking assembly 1133 can be connected between the locking arm 11316 and the support member 1132. The first locking assembly 1133 can be a bolt assembly connected between the locking arm 11316 and the support member 1132 to connect and fix the locking arm 11316 to the support member 1132.

[0146] In this embodiment, by setting a locking arm 11316 on the first side wall 11312, the first locking assembly 1133 is connected between the locking arm 11316 and the support member 1132, thereby facilitating installation and disassembly, and not easily damaging the main structure of the beam body 1131, thereby protecting the beam body 1131.

[0147] In some embodiments, reference Figure 4 、 Figure 5 and Figure 8 As shown, the structural beam assembly 1130 further includes a first locking assembly 1133 , and the first locking assembly 1133 is connected to the second sub-wall body 113223 and the beam body 1131 respectively.

[0148] In this embodiment, the first locking assembly 1133 is connected between the second sub-wall 113223 and the beam body 1131, which facilitates installation and disassembly, is not easy to damage the main structure of the support member 1132 and the beam body 1131, and plays a protective role for the support member 1132 and the beam body 1131.

[0149] In some embodiments, reference Figure 5 and Figure 8 As shown, a locking arm 11316 is protruded and connected to the first side wall 11312; the locking arm 11316 is fitted with the second sub-wall 113223, and the first locking assembly 1133 is connected to the locking arm 11316 and the second sub-wall 113223 respectively.

[0150] Specifically, since the support member 1132 is in contact with the first side wall 11312, the first locking assembly 1133 can be connected between the locking arm 11316 and the second sub-wall 113223. The locking arm 11316 is plate-shaped, and the locking arm 11316 and the second sub-wall 113223 are arranged opposite to each other, and the locking arm 11316 and the second sub-wall 113223 are in contact with each other. The first locking assembly 1133 can adopt a bolt assembly, which is connected between the locking arm 11316 and the second sub-wall 113223 to connect and fix the locking arm 11316 and the second sub-wall 113223.

[0151] In this embodiment, by setting a locking arm 11316 on the first side wall 11312, the first locking assembly 1133 is connected between the locking arm 11316 and the second sub-wall 113223, thereby facilitating installation and disassembly, and not easily damaging the main structure of the beam body 1131, thereby protecting the beam body 1131.

[0152] In some embodiments, reference Figure 11As shown, the battery device 1100 includes at least two structural beam assemblies 1130 arranged at intervals, and each structural beam assembly 1130 is connected to the first box wall 1114 of the box body 1110; the battery device 1100 also includes at least one fixing belt 1140, and the two ends of each fixing belt 1140 are respectively connected to the end of the beam body 1131 in any two structural beam assemblies 1130 away from the first box wall 1114.

[0153] Since the box body 1110 may include side walls, a top wall and a bottom wall, both ends of the beam body 1131 may extend to the side walls of the box body 1110. In this example, the first box wall 1114 is taken as the bottom wall as an example, and the beam body 1131 is connected to the first box wall 1114 through the support member 1132.

[0154] The beam body 1131 can extend adjacent to the sidewall of the housing 1110, allowing the battery cell assembly 1120 to be accommodated within the accommodation space 1113 of the housing 1110, such that the support member 1132 can be located on one side of the beam body 1131. Since the housing 1110 includes multiple sidewalls, multiple structural beam assemblies 1130 can be provided, with each side of each of the multiple sidewalls being provided with a corresponding structural beam assembly 1130.

[0155] The fixing belt 1140 shell adopts a sheet structure or a linear structure, etc. The fixing belt 1140 is used to connect any two structural beam components 1130, so that the two ends of the fixing belt 1140 are respectively connected and fixed to the two beam bodies 1131, so that the two beam bodies 1131 are connected and form an integral structure, which is beneficial to improve the compactness of the overall structure and improve the connection strength of the overall structure.

[0156] For example, the fixing belt 1140 is connected between two oppositely arranged structural beam components 1130, and the beam bodies 1131 in the two structural beam components 1130 are arranged in parallel and are both arranged along the preset direction X. The fixing belt 1140 is connected between the two beam bodies 1131. For example, the length direction of the fixing belt 1140 is perpendicular to the preset direction X. There can be multiple fixing belts 1140, and the multiple fixing belts 1140 can be spaced apart and arranged in parallel. Of course, the fixing belts 1140 can also be arranged at an angle or crosswise.

[0157] The fixing belt 1140 is connected to the end of the beam body 1131 away from the first box wall 1114. If the first box wall 1114 is the bottom wall of the box body 1110, the fixing belt 1140 is connected to the top of the beam body 1131. It can be seen that the fixing belt 1140 is located above the battery cell assembly 1120, and the fixing belt 1140 can also limit the battery cell assembly 1120.

[0158] In this embodiment, by providing a fixing belt 1140, multiple structural beam assemblies 1130 can form an integral structure, thereby improving the compactness of the overall structure and enhancing the connection strength and rigidity between the various structural beams, which is beneficial to reducing the deformation probability of the beam body 1131 and can limit the battery cell assembly 1120 to a certain extent.

[0159] In some embodiments, reference Figure 8 and Figure 11 As shown, the battery device 1100 further includes a plurality of second locking components 1150 , and any end of the fixing belt 1140 is connected to the beam body 1131 via at least one second locking component 1150 .

[0160] The connection between the fixing strap 1140 and the beam body 1131 can be fixed or detachable, such as welding or fastener connection. In this example, multiple second locking assemblies 1150 are provided, allowing the ends of the fixing strap 1140 to be detachably connected via the second locking assemblies 1150. The second locking assemblies 1150 can be directly formed by bolts, etc., to connect and secure the ends of the fixing strap 1140 to the beam body 1131.

[0161] In this embodiment, the fixing belt 1140 is detachably connected to the beam body 1131 via the second locking assembly 1150 , making installation and removal of the fixing belt 1140 and the beam body 1131 more convenient.

[0162] In some embodiments, reference Figure 11 As shown, the second locking assembly 1150 includes a locking seat 1151 and a locking member 1152 . The locking seat 1151 is connected to the beam body 1131 , and the locking member 1152 is connected to the locking seat 1151 and the fixing belt 1140 , respectively.

[0163] Specifically, the locking seat 1151 can be a plate, frame or solid structure, etc., and can be connected to the beam body 1131 by welding, bonding, etc., or the locking seat 1151 can be integrally formed with the beam body 1131. The locking member 1152 can be a bolt assembly, etc.

[0164] The end of the fixing belt 1140 is connected to the locking seat 1151 through a locking piece 1152. For example, the fixing belt 1140 is in the form of a sheet, and a connecting plate is formed on the locking seat 1151, so that the fixing belt 1140 is attached to the connecting plate. Through-hole structures are provided at corresponding positions of the fixing belt 1140 and the connecting plate. The studs in the bolt assembly are passed through the through-hole structures and are connected to the studs through nuts for fixation, thereby achieving the fixation of the fixing belt 1140 and the locking seat 1151.

[0165] In this embodiment, by providing a locking seat 1151, the fixing belt 1140 is not directly connected to the beam body 1131, and the tensile force on the fixing belt 1140 does not directly act on the beam body 1131, but the stress is dispersed and absorbed by the locking seat 1151, thereby protecting the beam body 1131.

[0166] In some embodiments, reference Figure 9 and Figure 10 As shown, the battery device 1100 further includes a support body 1160, which is connected to the first wall 1114 of the box body 1110. The support body 1160 can be plate-shaped and can be positioned in contact with the wall of the first box body 1110. Multiple support bodies 1160 can be provided, and the multiple support bodies 1160 can be spaced apart. The addition of the support body 1160 can enhance the structural strength of the first wall 1114. Since the first wall 1114 is typically used as a bottom wall, and the battery cell assembly 1120 is typically placed on the first wall 1114, the addition of the support body 1160 can enhance the load-bearing capacity of the first wall 1114, thereby improving the overall structural strength and rigidity of the box body 1110.

[0167] In some specific embodiments, referring to Figure 1-10As shown, the battery device 1100 includes a battery cell assembly 1120, a box body 1110 and a structural beam assembly 1130; wherein the box body 1110 has an accommodating space 1113 for accommodating the battery cell assembly 1120; the structural beam assembly 1130 includes a beam body 1131 and a support member 1132 both accommodated in the accommodating space 1113, the beam body 1131 extending along a preset direction X, the beam body 1131 having a first side wall 11312 on one side along the preset direction X, the support member 1132 extending along the preset direction X and connected to the first side wall 11312, the support member 1132 connected to the box body 1110, supporting The support member 1132 is arranged on both sides of the beam body 1131 opposite to the battery cell assembly 1120; the box body 1110 includes a first box wall 1114; the support member 1132 includes a first connecting portion 11321 and a protruding portion 11322, both of which are extended along a preset direction X, the preset direction X is parallel to the surface of the first box wall 1114, the first connecting portion 11321 is connected to the first box wall 1114, the protruding portion 11322 is connected to the first connecting portion 11321, and the protruding portion 11322 is protruded on the first connecting portion 11321 in a direction away from the first box wall 1114; the protruding portion 11322 includes a protruding portion 11322 extending in a direction away from the first box wall 1114. The support arm body 113221 is convexly bent in the four directions, and the support arm body 113221 is extended along the preset direction X. A support cavity 1134 is formed between the support arm body 113221 and the first box wall body 1114, and the support arm body 113221 is connected to the beam body 1131; the first connecting portion 11321 is located on the side of the support arm body 113221 away from the beam body 1131 and is connected to the support arm body 113221; the support arm body 113221 includes a first sub-wall body 113222 extending along the preset direction X, and the first sub-wall body 113222 is fitted with the first side wall body 11312; the structural beam assembly 1130 also The support arm 113221 further includes a bonding structure 1135 connected between the first sub-wall 113222 and the first side wall 11312. The support arm 113221 further includes a second sub-wall 113223 and a third sub-wall 113224, both extending along a preset direction X. The second sub-wall 113223 is connected to the first sub-wall 113222, and the third sub-wall 113224 is connected between the second sub-wall 113223 and the first connecting portion 11321. The first sub-wall 113222, the second sub-wall 113223, the third sub-wall 113224, and the first box wall 1114 collectively enclose a support cavity 1134.The support member 1132 also includes a second connecting portion 11323 extending along a preset direction X, the second connecting portion 11323 and the first connecting portion 11321 are respectively located on both sides of the protruding portion 11322, and the second connecting portion 11323 is connected to the protruding portion 11322, the second connecting portion 11323 is connected to the first box wall 1114, and the beam body 1131 abuts against the second connecting portion 11323; the structural beam assembly 1130 also includes a first locking assembly 1133, the first locking assembly 1133 is respectively connected to the support member 1132 and the beam body 1131; a locking arm 11316 is convexly provided on the first side wall 11312; the locking arm 11316 is fitted with the second sub-wall 113223 in the support member 1132, and the first locking assembly 1133 is respectively connected to the locking arm 11316 and the second sub-wall 113223 of the support member 1132 3223 are connected; the battery device 1100 includes at least two spaced-apart structural beam assemblies 1130, each of which is connected to the first box wall 1114 of the box body 1110; the battery device 1100 also includes at least one fixing strap 1140, each of which has two ends connected to the ends of the beam bodies 1131 of any two structural beam assemblies 1130, away from the first box wall 1114; the battery device 1100 also includes a plurality of second locking assemblies 1150, each end of the fixing strap 1140 being connected to the beam body 1131 via at least one second locking assembly 1150; the second locking assembly 1150 includes a locking seat 1151 and a locking member 1152; the locking seat 1151 is connected to the beam body 1131, and the locking member 1152 is respectively connected to the locking seat 1151 and the fixing strap 1140.

[0168] According to some embodiments of the present application, the present application further provides a beam body 1131, referring to Figure 12-15As shown, the beam body 1131 includes a supporting structure layer 11318, a cloth layer 11319 and a curing agent 11320, wherein the supporting structure layer 11318 includes a plurality of core wires 113181 extending along a first direction X, and the plurality of core wires 113181 are arranged around the first direction X and surround a molding cavity 11311; the cloth layer 11319 is wrapped around the outer surface of the supporting structure layer 11318; the cloth layer 11319 includes at least a first fiber body 113191, a second fiber body 113192 and a third fiber body 113193 interwoven with each other, and the first fiber body 113191 extends along the second direction Y and is arranged The second fiber body 113192 is arranged to cross the first fiber body 113191 at a first angle a in a clockwise direction, and the third fiber body 113193 is arranged to cross the first fiber body 113191 at a second angle β in a counterclockwise direction; the second direction Y is perpendicular to the first direction X; the curing agent 11320 is filled in the gap between adjacent core wires 113181 to cure the supporting structure layer 11318, and the curing agent 11320 is connected between the supporting structure layer 11318 and the cloth layer 11319 to cure the supporting structure layer 11318 and the cloth layer 11319 into one.

[0169] The first direction X is the extension direction of the beam body 1131, and the extension direction can be considered as the length direction of the beam body 1131; the second direction Y is perpendicular to the first direction X. The cross section of the beam body 1131 is parallel to the first direction X, and the second direction Y can be considered as a direction parallel to the cross section.

[0170] The support structure layer 11318 can be considered to form part of the main framework of the beam body 1131. The support structure layer 11318 utilizes a large number of core wires 113181, which are tightly fitted and arranged in an array according to the cross-sectional profile of the beam body 1131. The core wires 113181 extend along a first direction X and are arranged around an axis in the first direction X, thereby enclosing a cavity 11311 of the beam body 1131. The core wires 113181 are arranged in multiple layers or circles around the first direction X, thereby forming the thickness of the beam wall of the beam body 1131. The support structure layer 11318 forms the main framework of the hollow wall structure of the beam body 1131. The cross-sectional profile of the support structure layer 11318 can be polygonal, circular, elliptical, or a combination of straight lines and curves. The support structure layer 11318 has an inner surface and an outer surface, wherein the inner surface can be considered as the cavity wall surface of the mold cavity 11311. It should be noted that since the core filaments 113181 in the support structure layer 11318 are independent of each other, by filling the support structure layer 11318 with the curing agent 11320 described below, the curing agent 11320 is filled into the gaps or voids between adjacent core filaments 113181, thereby curing the curing agent 11320 and the support structure layer 11318 into a single structure. The core filaments 113181 can be made of metal or non-metallic materials. For example, the core filaments 113181 can be made of non-metallic sand yarns, such as glass yarn or glass fiber. Glass fiber is not easily conductive, has good corrosion resistance, and has high tensile strength. The tensile strength of unidirectional fiber pultruded composite materials can reach 1000 MPa.

[0171] As for the fabric layer 11319, the fabric layer 11319 is wrapped around the outer surface of the supporting structure layer 11318. Therefore, it can be seen that the fabric layer 11319 forms the outer surface of the beam body 1131. The fabric layer 11319 includes at least a first fiber body 113191, a second fiber body 113192, and a third fiber body 113193 that are interwoven with each other. This means that the fabric layer 11319 is woven or interwoven with at least three types of fiber bodies, namely the first fiber body 113191, the second fiber body 113192, and the third fiber body 113193. It is understood that there are multiple first fiber bodies 113191, the second fiber body 113192, and the third fiber body 113193.

[0172] Specifically, a plurality of first fiber bodies 113191 are arranged to extend along the second direction Y. It can be understood that the first fiber bodies 113191 are wound around the first direction X within the cross section of the support structure layer 11318, thereby forming a first fiber body layer that can be arranged circumferentially around the support structure layer 11318. The second fiber bodies 113192 and the third fiber bodies 113193 are respectively arranged at an angle to the first fiber body 113191. The second fiber bodies 113192 and the third fiber bodies 113193 are respectively located on both sides of the first fiber body 113191. Specifically, the second fiber body 113192 is arranged to cross the first fiber body 113191 in a clockwise direction at a first angle a, and the third fiber body 113193 is arranged to cross the first fiber body 113191 in a counterclockwise direction at a second angle β. The range of the angle a and the second angle β can be greater than 0° and less than or equal to 90°. For example, the first angle a can be 5°, 10°, 15°, 20°, 30°, 45°, 60° or 90°, etc., and the second angle β can be 5°, 10°, 15°, 20°, 30°, 45°, 60° or 90°, etc. The first angle a can be equal to or different from the second angle β. When the first angle a is equal to the second angle β, the second fiber body 113192 and the third fiber body 113193 are symmetrically arranged about the first fiber body 113191.

[0173] The first fiber body 113191, the second fiber body 113192, and the third fiber body 113193 can be made of natural fibers, artificial fibers, or synthetic fibers. For example, the first fiber body 113191, the second fiber body 113192, and the third fiber body 113193 can all be made of carbon fibers, which have the characteristics of high strength, high modulus, light weight, and corrosion resistance. Carbon fibers are made by converting organic fibers (such as polyacrylonitrile, viscose fibers, or petroleum asphalt) through certain chemical and thermal treatment processes.

[0174] In addition to bonding and curing the core wire 113181 in the support structure layer 11318, the curing agent 11320 is also used to connect the support structure layer 11318 to the fabric layer 11319. During the process of manufacturing the beam body 1131, after the fabric layer 11319 is wrapped around the support structure layer 11318, the curing agent 11320 can be injected. This not only cures the support structure layer 11318 but also connects and secures the fabric layer 11319 to the support structure layer 11318, thereby forming an integrated structure. The curing agent 11320 can be made of a variety of adhesives, such as resins such as polyurethane, epoxy, and vinyl.

[0175] In this example, it can also be understood that the beam body 1131 includes a beam wall body, and the beam wall body is arranged around the first direction X to form a cavity 11311. As for the structure of the beam wall body, the beam wall body includes a supporting structure layer 11318, a cloth layer 11319 and a curing agent 11320. The curing agent 11320 cures the supporting structure layer 11318, and the curing agent 11320 is respectively connected to the supporting structure layer 11318 and the cloth layer 11319, so that the three are cured to form the beam wall body of the structural beam.

[0176] In this embodiment, the support structure layer 11318 forms a part of the main structure of the beam body 1131, the core wire 113181 in the support structure layer 11318 is cured and formed by the curing agent 11320, the cloth layer 11319 is wrapped around the outer surface of the support structure layer 11318, and the first fiber body 113191, the second fiber body 113192 and the third fiber body 113193 in the cloth layer 11319 are interwoven, so that the tensile strength of the cloth layer 11319 is enhanced, the core wire 113181 is extended along the first direction X, and the first fiber body 113191 in the cloth layer 11319 is extended along the second direction perpendicular to the first direction X. Y extends, so that the cloth layer 11319 enhances the deformation resistance of the beam body 1131 in the second direction Y, and combined with the second fiber body 113192 and the third fiber body 113193 interwoven on both sides of the first fiber body 113191, further enhances the deformation resistance and tensile strength of the beam body 1131; in addition, the curing agent 11320 is filled between the core wires 113181, and the bonding ability between the core wires 113181 is enhanced. The curing agent 11320 plays a role in buffering the extrusion force, thereby improving the extrusion resistance of the beam body 1131, making the beam body 1131 less likely to break, and improving the durability of the beam body 1131.

[0177] In some embodiments, reference Figure 12-16 As shown, the first angle a ranges from 15° to 60°.

[0178] The second fiber body 113192 forms an angle of 15°-60° with the first fiber body 113191. The first angle a can be any value between 15°-60°. For example, the angle between the second fiber body 113192 and the first fiber body 113191 can be 15°, 20°, 25°, 30°, 40°, 45°, 50°, 60°, etc. The second fiber body 113192 is arranged at the first angle a with the first fiber body 113191, so that the fabric layer 11319 has strong tensile resistance in the direction of the angle of 15°-60° in the clockwise direction with the first fiber body 113191.

[0179] In some embodiments, reference Figure 12-16 As shown, the second angle β ranges from 15° to 60°.

[0180] The third fiber body 113193 forms an angle of 15°-60° with the first fiber body 113191. The second angle β can be any value between 15°-60°. For example, the angle between the third fiber body 113193 and the first fiber body 113191 can be 15°, 20°, 25°, 30°, 40°, 45°, 50°, 60°, etc. The third fiber body 113193 is arranged at the first angle a with the first fiber body 113191, so that the fabric layer 11319 has strong tensile resistance in the direction of the counterclockwise direction at an angle of 15°-60° with the first fiber body 113191. For a group of fiber bodies, the second fiber body 113192 and the third fiber body 113193 can be symmetrically arranged relative to the first fiber body 113191, and the first fiber body 113191, the second fiber body 113192 and the third fiber body 113193 can intersect at one point.

[0181] In this embodiment, the second fiber body 113192 and the third fiber body 113193 are respectively interwoven with the first fiber body 113191, thereby enhancing the tensile strength of the cloth layer 11319 within the angle range of 15°-60° on both sides of the second direction Y, which is beneficial to balanced force and improving the deformation resistance of the beam body 1131.

[0182] In some embodiments, reference Figure 14-16 As shown, the fabric layer 11319 further includes a fourth fiber body 113194 interwoven with the first fiber body 113191 , the second fiber body 113192 and the third fiber body 113193 . The fourth fiber body 113194 extends along the first direction X.

[0183] It should be noted that a plurality of fourth fiber bodies 113194 are provided, each extending along the first direction X, such that the extension direction of the fourth fiber body 113194 is the same as the extension direction of the core wire 113181. Therefore, after the fabric layer 11319 is wrapped around the supporting structure layer 11318, the fourth fiber bodies 113194 are arranged parallel to the core wire 113181, thereby enhancing the tensile strength of the beam body 1131 in the first direction X. The fourth fiber body 113194 intersects with the first fiber body 113191, the second fiber body 113192, and the third fiber body 113193, thereby improving the density and deformation resistance of the fabric layer 11319.

[0184] In this embodiment, by adding the fourth fiber body 113194 extending along the first direction X to the fabric layer 11319 , the deformation resistance of the fabric layer 11319 is enhanced, thereby improving the tensile and deformation resistance of the beam body 1131 .

[0185] In some embodiments, reference Figure 14-16 As shown, the cloth layer 11319 includes a first layer 113195 and a second layer 113196 . The first layer 113195 is wrapped around the outer surface of the supporting structure layer 11318 , and the second layer 113196 is adhered to the cavity wall of the cavity 11311 .

[0186] Specifically, the first layer 113195 and the second layer 113196 can be two independent parts, that is, the first layer 113195 and the second layer 113196 can be arranged without being connected, the first layer 113195 is arranged to fit the outer surface of the supporting structure layer 11318, and the second layer 113196 is arranged to fit the cavity wall of the cavity 11311 of the supporting structure layer 11318, so that the cloth layer 11319 can support the inside and outside of the supporting structure layer 11318 respectively, and the curing agent 11320 bonds the first layer 113195, the second layer 113196 and the supporting structure layer 11318, and solidifies them into an integrated structure, thereby further enhancing the overall deformation resistance and tensile strength of the beam body 1131.

[0187] Optionally, the first layer 113195 and the second layer 113196 can be an integral structure, that is, the first layer 113195 and the second layer 113196 can be connected, that is, the cloth layer 11319 can cover and wrap the outer surface of the supporting structure layer 11318 and the cavity wall surface of the cavity 11311 as a whole, so that the overall structure of the beam body 1131 is more compact.

[0188] In this embodiment, while the cloth layer 11319 is wrapped around the outer surface of the supporting structure layer 11318, the cloth layer 11319 is also covered on the cavity wall surface of the cavity 11311 of the supporting structure layer 11318, so that the cloth layer 11319 wraps the supporting structure layer 11318 in all directions, which is beneficial to improving the tensile and deformation resistance of the beam wall of the beam body 1131 and reducing the risk of breakage of the beam body 1131.

[0189] In some embodiments, reference Figure 14-16 As shown, the mold cavity 11311 has a first cavity wall and a second cavity wall, and at least one rib 11317 extends from the first cavity wall toward the second cavity wall.

[0190] Specifically, the outer shape of the rib 11317 is sheet-like or plate-like. The rib 11317 can be formed by arranging multiple core wires 113181 along the first direction X. The core wires 113181 in the rib 11317 also need to be cured with a curing agent 11320 to form a whole. When preparing the support structure layer 11318, the rib 11317 can be prepared at the same time. The support structure layer 11318 and the rib 11317 are poured with the curing agent 11320 together and cured to form an integral structure, thereby improving the rigidity, strength and deformation resistance of the entire structure. The first cavity wall and the second cavity wall are arranged adjacent to or opposite to each other. There can be one or more ribs 11317, and multiple ribs 11317 can be arranged at intervals, or multiple ribs 11317 can be arranged to cross each other.

[0191] The outer surface of the rib 11317 can be wrapped with a cloth layer 11319, and the cloth layer 11319 and the outer surface of the rib 11317 are bonded and fixed by a curing agent 11320, thereby enhancing the tensile and deformation resistance of the rib 11317.

[0192] In this embodiment, by providing the ribs 11317 , support is formed in the cavity 11311 , thereby facilitating enhancement of the anti-deformation capability of the beam body 1131 in a direction perpendicular to the first direction X.

[0193] In some specific embodiments, referring to Figure 12-19As shown, the beam body 1131 includes a supporting structure layer 11318, a fabric layer 11319 and a curing agent 11320, wherein the supporting structure layer 11318 includes a plurality of core wires 113181 extending along a first direction X, and the plurality of core wires 113181 are arranged around the first direction X and surround a molding cavity 11311; the fabric layer 11319 is wrapped around the outer surface of the supporting structure layer 11318; the fabric layer 11319 includes at least a first fiber body 113191, The second fiber body 113192 and the third fiber body 113193, the first fiber body 113191 extends along the second direction Y, the second fiber body 113192 is arranged to cross the first fiber body 113191 at a first angle a in the clockwise direction, and the third fiber body 113193 is arranged to cross the first fiber body 113191 at a second angle β in the counterclockwise direction; the second direction Y is perpendicular to the first direction X; the curing agent 11320 is filled in the first fiber body 113191. The gap between the adjacent core wires 113181, and the curing agent 11320 is connected between the support structure layer 11318 and the cloth layer 11319, so that the support structure layer 11318 and the cloth layer 11319 are cured into one; the first angle a range is 15°-60°; the second angle β range is 15°-60°; the cloth layer 11319 also includes a first fiber body 113191, a second fiber body 113192 and a third fiber body 113193 interwoven with each other. The fourth fiber body 113194 is arranged in a row and extends along the first direction X; the cloth layer 11319 includes a first layer 113195 and a second layer 113196, the first layer 113195 is wrapped around the outer surface of the supporting structure layer 11318, and the second layer 113196 is adhered to the cavity wall surface of the cavity 11311; the cavity 11311 has a first cavity wall and a second cavity wall, and at least one rib 11317 extends from the first cavity wall toward the second cavity wall.

[0194] According to some embodiments of the present application, referring to Figure 16-19As shown, the present application also provides a beam body manufacturing device 2000, which is used to manufacture the beam body 1131 in the above embodiment. The beam body manufacturing device 2000 includes a first feeding component 2100, a second feeding component 2200, a preforming mold 2300, a shaping component 2400 and a traction shaping component 2500, wherein the first feeding component 2100 is used to convey the core wire 113181; the second feeding component 2200 is used to convey the cloth layer 11319; the preforming mold 2300 is located at the discharge end of the first feeding component 2100 and the second feeding component 2200, and a shaping channel is provided on the preforming mold 2300, and the core wire 113181 and the cloth layer 11319 are connected in the forming channel, and the forming channel can make the core wire 113181 and the cloth layer 11319 gradually shrink and be pre-shaped into a preset shape in the first direction X; the shaping component 2400 is located at the discharge end of the preforming mold 2300, and the core wire 113181 and the cloth layer 11319 are connected in the shaping component 2400, and the shaping component 2400 is used to shape the core wire 113181 and the cloth layer 11319 into a predetermined shape; the traction molding component 2500 is located at the discharge end of the shaping component 2400, and the traction molding component 2500 is used to stretch and mold the core wire 113181 and the cloth layer 11319.

[0195] The preparation process of the beam body 1131 needs to go through the production process of feeding, preforming, shaping and forming. Therefore, the production device includes a feeding component (including a first feeding component 2100 and a second feeding component 2200), a preforming mold 2300, a shaping component 2400 and a traction forming component 2500 arranged in sequence. Therefore, it can be seen that the preforming mold 2300 is located at the discharge end of the feeding component, the shaping component 2400 is located at the discharge end of the preforming mold 2300, and the traction forming component 2500 is located at the discharge end of the shaping component 2400.

[0196] For the first feeding component 2100, the first feeding component 2100 is used to convey the core wire 113181, which can also be called yarn. The first feeding component 2100 may include a yarn guide plate (or yarn guide plate), and the core wire 113181 is evenly arranged on the yarn guide plate. The core wire 113181 is guided by the yarn guide plate, which can reduce the risk of knotting and connection of the core wire 113181 during the transmission process.

[0197] For the second feeding component 2200 , the second feeding component 2200 is used to transport the cloth layer 11319 , and the cloth layer 11319 can be wound and placed on a frame in the second feeding component 2200 .

[0198] The preforming mold 2300 is used to arrange the core wire 113181 and the cloth layer 11319 so that the core wire 113181 and the cloth layer 11319 can be arranged in a preset shape that is similar or close to the cross-sectional contour shape of the beam body 1131. The cross-sectional contour shape of the solidified beam body 1131 can be defined as a fixed shape, and the preset shape refers to a shape or figure that is close to or similar to the fixed shape. The preset shape is the arrangement shape of the core wire 113181 and the cloth layer 11319 in the cross-sectional direction perpendicular to the first direction X. The preforming mold 2300 makes the arrangement position and shape of the core body and the cloth layer 11319 closer to the final shape, so that before the core body and the cloth layer 11319 enter the forming component 2400 for forming, the core wire 113181 and the cloth layer 11319 can be pre-arranged in a preset shape. The preforming mold 2300 allows the core wire 113181 and the cloth layer 11319 to be transitionally arranged to the final shape first, so as to improve the shaping and forming effects during the later shaping process.

[0199] Specifically, a molding channel is opened on the pre-molding mold 2300, and the core wire 113181 and the cloth layer 11319 are connected in the molding channel. The molding channel is used to limit the arrangement position of the core wire 113181 and the cloth layer 11319. The cross-sectional profile shape of the molding channel is a preset shape. It can be seen that the core wire 113181 and the cloth layer 11319 are limited to the preset shape after passing through the molding channel.

[0200] The forming channel allows the core filament 113181 and the fabric layer 11319 to be arranged in a tapered manner in the first direction X. This allows the arrangement of the core filament 113181 and the fabric layer 11319 to more closely resemble the final shape, serving as a transitional process for finalizing the final shape. The outer dimensions of the preset shape are larger than those of the final shape. The preset shape can be considered a transitional shape toward the final shape, offering a wider range of dimensions, shapes, and precision, serving as a transitional form towards the final shape. Therefore, the core filament 113181 and the fabric layer 11319 gradually transition from a larger outer dimension to a smaller one within the forming channel. This gradual pre-forming process helps reduce tangling and tangling issues with the core filament 113181, thereby improving the accuracy and quality of the final final shape. The forming channel can be a single channel or a combination of multiple channels. In a cross-section perpendicular to the first direction X, the multiple channels are arranged in an array according to a predetermined pattern, ensuring that the core filament 113181 and the fabric layer 11319 are arranged in the predetermined shape.

[0201] The shaping component 2400 is used to shape and solidify the core wire 113181 and the cloth layer 11319. The shaping component 2400 has a shaping function, so that the core wire 113181 and the cloth layer 11319 entering the shaping component 2400 can be arranged according to a shaped shape; the shaped shape is the arrangement shape of the core wire 113181 and the cloth layer 11319 on the cross section perpendicular to the first direction X. The core wire 113181 and the cloth layer 11319 are infused with a curing agent 11320, so that the core wire 113181 and the cloth layer 11319 are solidified into an integrated structure according to the shaped shape.

[0202] Reference Figure 19 As shown, a traction cavity 2510 is opened inside the traction molding component 2500, and the beam body 1131 after solidification and molding is connected to the traction cavity 2510. The traction molding component 2500 is used to traction and mold the overall structure of the core wire 113181 and the cloth layer 11319 after being shaped. The traction molding component 2500 can adopt a traction machine, and the traction machine can adopt various forms, for example, reciprocating hydraulic type or crawler type. The hydraulic traction machine has a larger traction force, and the crawler traction machine is relatively stable during the movement and has a large contact area with the core wire 113181 and the cloth layer 11319.

[0203] In this embodiment, the manufacturing device performs a preforming process on the core wire 113181 and the cloth layer 11319 before shaping the core wire 113181 and the cloth layer 11319, so that the core wire 113181 and the cloth layer 11319 can be preformed into a preset shape close to the final shape through the preforming channel. The core wire 113181 and the cloth layer 11319 are preformed and arranged by the preforming tool, and then transitioned from the preset shape to the final shape, so that the core wire 113181 and the cloth layer 11319 are not prone to knotting and connection problems during the transmission and shaping process. In addition, the beam body 1131 prepared by the present device, the core wire 113181 is solidified and formed by the curing agent 11320, the cloth layer 11319 is wrapped around the outer surface of the supporting structure layer 11318, and the first fiber body 113191, the second fiber body 113192 and the third fiber body 113193 in the cloth layer 11319 are interwoven, so that the tensile strength of the cloth layer 11319 is enhanced, the core wire 113181 is extended along the first direction X, and the first fiber body 113191 in the cloth layer 11319 is extended along the second direction Y perpendicular to the first direction X, so that the cloth layer 1131 9 The deformation resistance of the beam body 1131 is enhanced in the second direction Y, and the second fiber body 113192 and the third fiber body 113193 interwoven on both sides of the first fiber body 113191 are combined to further enhance the deformation resistance and tensile strength of the beam body 1131. In addition, the curing agent 11320 is filled between the core wires 113181, and the bonding ability between the core wires 113181 is enhanced. The curing agent 11320 plays a role in buffering the extrusion force, thereby improving the compression resistance of the beam body 1131, making the beam body 1131 less likely to break, and improving the durability of the beam body 1131.

[0204] In some embodiments, reference Figure 16 and Figure 17 As shown, the preforming mold 2300 includes a plurality of forming frames 2310 arranged in sequence along the first direction X, and each forming frame 2310 is provided with a forming sub-channel 2311. Along the first direction X, the outer contour size of each forming sub-channel 2311 tends to decrease, so that the core wire 113181 and the cloth layer 11319 passing through each forming sub-channel 2311 in sequence are gradually shaped into a preset shape.

[0205] Since the function of the preforming mold 2300 is to arrange the core wire 113181 and the fabric layer 11319 into a predetermined shape closer to the final shape, it can be understood that the core wire 113181 and the fabric layer 11319 can undergo multiple shape adjustments to ultimately arrange them into the predetermined shape. Therefore, the preforming mold 2300 may include multiple forming frames 2310, each of which is formed with a forming sub-channel 2311. As the core wire 113181 and the fabric layer 11319 pass through each forming frame 2310, the arrangement shape of the core wire 113181 and the fabric layer 11319 is brought closer to the final shape. Therefore, it can be understood that along the first direction X, the outer contour or outer dimensions of the forming sub-channel 2311 on the forming frame 2310 tend to decrease, facilitating the final formation into the predetermined shape. It can be seen that the function of each forming sub-channel 2311 is to gradually reduce the arrangement shape of the core wire 113181 and the cloth layer 11319 to a preset shape, which has the effect of gradual transition forming.

[0206] It should be pointed out that the molded sub-channel 2311 includes multiple channels, all of which extend along the first direction X. The multiple channels are arranged in an array in the cross section to form a preset shape. For example, the multiple channels are arranged to form a preset shape, or to form a transition shape with a larger outer contour than the preset shape.

[0207] The multiple forming frames 2310 can be independently and spaced apart to make the use of the mold as a whole more flexible. Alternatively, the multiple forming frames 2310 can be connected to form a whole to facilitate the movement and transportation of the mold as a whole.

[0208] In this embodiment, the preforming mold 2300 is in the form of a combination of multiple forming frames 2310. The core wire 113181 and the cloth layer 11319 are limited in shape once through a forming frame 2310. After passing through multiple forming frames 2310, they are limited to a preset shape, which is conducive to simplifying the structure of the preforming mold 2300, reducing the weight of the mold, and improving the flexibility of the mold.

[0209] In some embodiments, reference Figure 17 As shown, the forming channel has a channel axis corresponding to the center of the beam body 1131, and the forming channel includes a first sub-channel 23111 and a second sub-channel 23112. The first sub-channel 23111 is used to pass the core wire 113181, and the second sub-channel 23112 is used to pass the cloth layer 11319. The second sub-channel 23112 is located on the side of the first sub-channel 23111 away from the channel axis.

[0210] Specifically, the channel axis can be considered the central axis of beam body 1131. Because fabric layer 11319 wraps around the additional surface of support structure layer 11318, it is necessary to position fabric layer 11319 on the side of core wire 113181 that is away from the channel axis. Accordingly, core wire 113181 and fabric layer 11319 are spaced apart, allowing core wire 113181 to pass through first sub-channel 23111, while fabric layer 11319 to pass through second sub-channel 23112. The cross-sectional profiles of first and second sub-channels 23111 and 23112 are combined and arranged in a shape that approximates a predetermined configuration.

[0211] In the case of multiple forming frames 2310, each forming sub-channel 2311 includes a first sub-channel 23111 and a second sub-channel 23112 to distinguish and classify the transmission channels of the core filament 113181 and the fabric layer 11319. It should be noted that the first sub-channel 23111 can be formed by combining and arranging one or more channels, and similarly, the second sub-channel 23112 can also be formed by combining and arranging one or more channels. The multiple channels are arranged in an array in a cross-section to form a predetermined shape.

[0212] In this embodiment, the first sub-channel 23111 and the second sub-channel 23112 are used to distinguish and transport and pre-shape the core wire 113181 and the cloth layer 11319, respectively, so that the core wire 113181 is not prone to problems such as knotting and connection during the transmission and pre-shaping process. In addition, the cloth layer 11319 is also not prone to problems such as knotting and connection during the transmission and pre-shaping process. The core wire 113181 and the cloth layer 11319 are transported separately, which reduces the chaotic arrangement between the core wire 113181 and the cloth layer 11319, which is beneficial to improving the forming quality of the beam body 1131.

[0213] In some embodiments, reference Figure 16 and Figure 18 As shown, the shaping component 2400 includes a third feeding component 2420 and a shaping mold 2410, the core wire 113181 and the cloth layer 11319 are connected to the shaping mold 2410, and the third feeding component 2420 is connected to the shaping mold 2410. The third feeding component 2420 can transport the curing agent 11320 into the shaping mold 2410 to allow the core wire 113181 and the cloth layer 11319 to be cured and formed.

[0214] Specifically, the third feeding component 2420 is used to hold the curing agent 11320, and the shaping mold 2410 has a shaping cavity 2440. The third feeding component 2420 is connected to the shaping cavity 2440 through the infusion channel 2430, so that the curing agent 11320 can enter the shaping cavity 2440. The core wire 113181, the cloth layer 11319 and the curing agent 11320 are all located in the shaping cavity 2440. After the curing agent 11320 cools and solidifies, the core wire 113181 and the cloth layer 11319 are solidified into an integrated structure.

[0215] The core wire 113181 and the cloth layer 11319 are passed through the molding cavity 2440 of the molding die 2410. The molding die 2410 arranges the core wire 113181 and the cloth layer 11319 into a fixed shape, that is, the cross-sectional shape of the core wire 113181 and the cloth layer 11319 is a fixed shape.

[0216] In this embodiment, shaping assembly 2400 is used to shape and solidify core wire 113181 and fabric layer 11319, and to ensure that the cross-sectional shape of core wire 113181 and fabric layer 11319 is a predetermined shape, that is, a predetermined cross-sectional profile shape of the formed beam body 1131. Third feed assembly 2420 delivers curing agent 11320 to shaping mold 2410 during the shaping process, facilitating shaping of core wire 113181 and fabric layer 11319, making shaping assembly 2400 more compact and convenient to use.

[0217] According to some embodiments of the present application, the present application further provides a method for manufacturing the beam body 1131. The method is used to prepare the beam body 1131 in the above embodiment, and the method includes the following steps:

[0218] The material prefabrication step specifically includes prefabricating the core wire 113181 and the cloth layer 11319.

[0219] The core yarn 113181 can be made of glass yarn, glass fiber, etc. The glass yarn is guided and transported by a yarn guide plate, etc. The cloth layer 11319 can be wound and installed on the frame.

[0220] The preforming step specifically includes passing the core wire 113181 and the cloth layer 11319 through the preforming mold 2300 so that the core wire 113181 and the cloth layer 11319 form a tapered trend along the first direction X.

[0221] The preforming process of the beam body 1131 utilizes a preforming mold 2300. Preforming refers to arranging the core wire 113181 and the fabric layer 11319 in a predetermined shape similar to or approximating the cross-sectional profile of the beam body 1131. The tapering trend refers to the process by which the core wire 113181 and the fabric layer 11319 transition from a relatively large outer profile to a predetermined shape closer to the final shape. Specifically, the core wire 113181 and the fabric layer 11319 gradually taper from a larger outer profile to a smaller outer profile within the forming channel of the preforming mold 2300, achieving preforming in a gradual manner. The specific principles and preforming process can be found in the description of the embodiment of the beam body manufacturing device 2000, and will not be further elaborated here.

[0222] The shaping step specifically includes curing and shaping the core wire 113181, the cloth layer 11319 and the curing agent 11320 into a fixed shape through the shaping component 2400.

[0223] The purpose of shaping is to arrange the core wire 113181 and the cloth layer 11319 in a shaped shape in the shaping component 2400 , and to shape and solidify them through the curing agent 11320 .

[0224] The pulling and forming step specifically includes stretching and forming the core wire 113181 and the cloth layer 11319 through the pulling and forming component 2500.

[0225] Among them, the core wire 113181 and the cloth layer 11319 are cured and formed with the curing agent 11320 in the shaping step. The formed beam body 1131 enters the traction molding assembly 2500 as a whole. By applying a tensile force to the cured and formed beam body 1131, it is deformed at a certain speed to achieve the desired shape and size.

[0226] In this embodiment, before shaping the core wire 113181 and the fabric layer 11319, the core wire 113181 and the fabric layer 11319 are preformed, allowing the core wire 113181 and the fabric layer 11319 to be preformed into a predetermined shape close to the final shape through the preforming channel. The core wire 113181 and the fabric layer 11319 are preformed and arranged by the preforming tool, transitioning from the predetermined shape to the final shape. This prevents the core wire 113181 and the fabric layer 11319 from becoming tangled or becoming attached during the transport and shaping process. Furthermore, in this method, by wrapping the core wire 113181 with the fabric layer 11319 and injecting a curing agent 11320 for curing and shaping, the beam body 1131 absorbs extrusion force and relieves stress, thereby enhancing the deformation resistance of the beam body 1131, effectively reducing damage to the core wire 113181 and the fiber structure, and making the beam body 1131 less susceptible to damage.

[0227] In some embodiments, reference Figure 14-16 As shown, in the step of the core wire 113181 and the cloth layer 11319 passing through the preforming mold 2300, the preforming mold 2300 allows the core wire 113181 to pass through the first sub-channel 23111 and the cloth layer 11319 to pass through the second sub-channel 23112. The first sub-channel 23111 and the second sub-channel 23112 are arranged in parallel with each other.

[0228] Specifically, a first sub-channel 23111 and a second sub-channel 23112 that are not connected are respectively opened in the preforming mold 2300, so that the core wire 113181 is connected to the first sub-channel 23111, and the cloth layer 11319 is connected to the second sub-channel 23112, thereby achieving a partitioned arrangement of the core wire 113181 and the cloth layer 11319, and the silk fibers of the core wire 113181 and the fiber body in the cloth layer 11319 are not mixed, so that the core wire 113181 and the fiber body in the cloth layer 11319 are less likely to be knotted or connected, which is beneficial to improving the flatness of the arrangement between the core wire 113181 and the cloth layer 11319, and is beneficial to improving the quality of the beam body 1131.

[0229] In this embodiment, the preforming mold 2300 can arrange and transport the core wire 113181 and the cloth layer 11319 in partitions, so that the core wire 113181 and the cloth layer 11319 are less likely to be affected by mutual friction, and the core wire 113181 and the fiber body in the cloth layer 11319 are less likely to be knotted or connected, which is beneficial to improving the quality of the beam body 1131.

[0230] In some embodiments, reference Figure 14-16 As shown, in the step where the core wire 113181 and the cloth layer 11319 pass through the preforming mold 2300 and the core wire 113181 and the cloth layer 11319 form a gradual shrinking trend along the first direction X, the preforming mold 2300 includes a plurality of forming frames 2310 arranged in sequence along the first direction X, and each forming frame 2310 is provided with a forming sub-channel 2311. Along the first direction X, the outer contour size of each forming sub-channel 2311 tends to decrease, so that the core wire 113181 and the cloth layer 11319 passing through each forming sub-channel 2311 in sequence are gradually shaped into a preset shape.

[0231] It can be seen that the function of the preforming mold 2300 is to arrange the core wire 113181 and the cloth layer 11319 into a preset shape that is closer to the final shape, and the function of each forming sub-channel 2311 is to gradually shrink the arrangement shape of the core wire 113181 and the cloth layer 11319 into a preset shape, which has the effect of gradual transition forming. For details, please refer to the description in the above embodiment of the beam body manufacturing device 2000, which will not be repeated here.

[0232] In this embodiment, the preforming mold 2300 is in the form of a combination of multiple forming frames 2310. The core wire 113181 and the cloth layer 11319 are shaped once by a forming frame 2310, and a preset shape is formed after passing through multiple forming frames 2310. This is conducive to simplifying the structure of the preforming mold 2300, reducing the weight of the mold, and improving the flexibility of the mold.

[0233] According to some embodiments of the present application, the present application further provides an energy storage device, which includes a power conversion device and the energy storage device in the above embodiment, and the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0234] Specifically, the energy storage device may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices 1100, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0235] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it at the appropriate time. For example, an energy storage device can store electrical energy during periods of low electricity consumption and provide it to relevant users or electrical equipment during periods of peak electricity consumption. The energy storage system provided in the embodiments of the present application can be any power system that requires an energy storage device.

[0236] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0237] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed in the cabinet.

[0238] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a master control module, a power distribution module, and a fire protection module.

[0239] As an example, the thermal management module may include a liquid cooling unit that provides cooling liquid for regulating the temperature of the battery cells to each battery device 1100 through a pipeline.

[0240] For example, the master control module can serve as the battery management unit (BMU) of a battery cluster, monitoring and managing the cluster. The master control module can monitor information such as the battery cluster's current, voltage, power, or temperature. For example, it can control the battery cluster's charge and discharge current and voltage. The master control module includes modules such as the slave battery management unit (SBMU) and a fusion switch.

[0241] As an example, the master control module can serve as a battery management unit (BMU) for an energy storage device, used to monitor and manage the energy storage device. The master control module can monitor information such as the current, voltage, power, state of charge, or temperature of the energy storage device. For example, it can control the charge and discharge current and voltage of the energy storage device. As an example, the master control module includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH), and a fiber optic conversion module.

[0242] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., which are used to detect, alarm or extinguish fires in the energy storage system.

[0243] As an example, the power distribution module can be used to distribute power to modules in the energy storage device that require power.

[0244] According to some embodiments of the present application, the present application also provides an energy storage system, which includes a power conversion device and the energy storage device in the above embodiment, and the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0245] In some embodiments, the energy storage system may include one or more energy storage devices and a power converter system (PCS), wherein the power converter is connected between the power generation equipment and the energy storage device. The power generation equipment is used to generate electrical energy, and the electrical energy generated by the power generation equipment can be stored in the energy storage device through the power converter. As an example, the power generation equipment may specifically be a solar panel, a hydropower generation equipment, a thermal power generation equipment, a wind power generation equipment, etc. The specific type of the power generation equipment is not limited in this application.

[0246] According to some embodiments of the present application, referring to Figure 1 As shown, the present application also provides an electrical device, which includes the battery device 1100 in the above embodiment, the energy storage device in the above embodiment, or the energy storage system in the above embodiment, and the battery device 1100 is used to store or provide electrical energy.

[0247] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles 1000, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0248] The example of the electric device in this application is based on the example of the battery device 1100 described above. The example of the electric device includes all the technical effects of the example of the battery device 1100 described above, which will not be repeated here.

[0249] According to some embodiments of the present application, the present application further provides a charging network, which includes charging piles and the energy storage device in the above embodiment or the energy storage system in the above embodiment, and the energy storage device is used to provide electrical energy for the charging piles.

[0250] For example, a charging network includes a charging station and an energy storage device. The charging station is electrically connected to the energy storage device, which is used to provide electrical energy to the charging station. The charging station and the battery device 1100 in the energy storage device are electrically connected via a cable, and the battery device 1100 can provide its stored electrical energy to the charging station. The charging station has one or more connectors, which are used to connect to an electrical device (such as a vehicle 1000) to replenish energy to the electrical device.

[0251] The energy storage device can be located inside the charging pile (such as an integrated storage and charging machine) or outside the charging pile.

[0252] The above are merely preferred embodiments of the present application and only specifically describe the technical principles of the present application. These descriptions are intended only to explain the principles of the present application and should not be construed in any way as limiting the scope of protection of the present application. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application, as well as other specific implementations of the present application that can be conceived by those skilled in the art without inventive effort, shall be included within the scope of protection of the present application.

Claims

1. A battery device (1100), characterized in that: include: Battery cell assembly (1120); The box (1110) has a receiving space (1113) for receiving a battery cell assembly (1120); A structural beam assembly (1130) comprises a beam body (1131) and a support member (1132) both of which are accommodated in the accommodation space (1113); the beam body (1131) is extended along a preset direction (X); the beam body (1131) has a first side wall (11312) on one side along the preset direction (X); the support member (1132) is extended along the preset direction (X) and is connected to the first side wall (11312); the support member (1132) is connected to the box body (1110); and the support member (1132) and the battery cell assembly (1120) are arranged on both sides of the beam body (1131) opposite to each other.

2. The battery device (1100) according to claim 1, characterized in that The box body (1110) includes a first box wall (1114); the support member (1132) includes a first connecting portion (11321) and a protruding portion (11322), both of which are extended along the preset direction (X), the preset direction (X) is parallel to the surface of the first box wall (1114), the first connecting portion (11321) is connected to the first box wall (1114), the protruding portion (11322) is connected to the first connecting portion (11321), and the protruding portion (11322) is protruded from the first connecting portion (11321) in a direction away from the first box wall (1114).

3. The battery device (1100) according to claim 2, characterized in that The raised portion (11322) includes a support arm body (113221) that is bent outward in a direction away from the first box wall body (1114); the support arm body (113221) is extended along the preset direction (X); a support cavity (1134) is formed between the support arm body (113221) and the first box wall body (1114); the support arm body (113221) is connected to the beam body (1131); the first connecting portion (11321) is located on a side of the support arm body (113221) away from the beam body (1131) and is connected to the support arm body (113221).

4. The battery device (1100) according to claim 3, characterized in that The support arm body (113221) comprises a first sub-wall body (113222) extending along a preset direction (X), and the first sub-wall body (113222) is arranged to fit the first side wall body (11312).

5. The battery device (1100) according to claim 4, characterized in that The structural beam assembly (1130) further includes an adhesive structure (1135), and the adhesive structure (1135) is connected between the first sub-wall body (113222) and the first side wall body (11312).

6. The battery device (1100) according to claim 4, characterized in that The support arm body (113221) also includes a second sub-wall body (113223) and a third sub-wall body (113224) both extending along the preset direction (X); the second sub-wall body (113223) is connected to the first sub-wall body (113222); the third sub-wall body (113224) is connected between the second sub-wall body (113223) and the first connecting portion (11321); the first sub-wall body (113222), the second sub-wall body (113223), the third sub-wall body (113224) and the first box wall body (1114) are jointly arranged to form the support cavity (1134).

7. The battery device (1100) according to claim 2, characterized in that The support member (1132) further includes a second connecting portion (11323) extending along the preset direction (X), the second connecting portion (11323) and the first connecting portion (11321) are respectively located on both sides of the raised portion (11322), and the second connecting portion (11323) is connected to the raised portion (11322), the second connecting portion (11323) is connected to the first box wall (1114), and the beam body (1131) abuts against the second connecting portion (11323).

8. The battery device (1100) according to claim 7, characterized in that The second connecting portion (11323) is plate-shaped, and the second connecting portion (11323) is arranged to fit and connect with the first box wall (1114).

9. The battery device (1100) according to claim 2, characterized in that The first connecting portion (11321) is plate-shaped, and the first connecting portion (11321) is arranged to fit and connect with the first box wall (1114).

10. The battery device (1100) according to claim 9, characterized in that The first connecting portion (11321) is fixed to the first box wall (1114) by welding.

11. The battery device (1100) according to claim 7, characterized in that: The second connecting portion (11323) is fixed to the first box wall (1114) by welding.

12. The battery device (1100) according to any one of claims 1 to 11, characterized in that: The structural beam assembly (1130) further includes a first locking assembly (1133), wherein the first locking assembly (1133) is connected to the support member (1132) and the beam body (1131) respectively.

13. The battery device (1100) according to claim 12, characterized in that A locking arm (11316) is protrudingly provided on the first side wall (11312); the locking arm (11316) is fitted with the support member (1132), and the first locking assembly (1133) is respectively connected to the locking arm (11316) and the support member (1132).

14. The battery device (1100) according to claim 6, characterized in that The structural beam assembly (1130) further includes a first locking assembly (1133), wherein the first locking assembly (1133) is connected to the second sub-wall body (113223) and the beam body (1131) respectively.

15. The battery device (1100) according to claim 14, characterized in that A locking arm (11316) is protrudingly provided on the first side wall (11312); the locking arm (11316) is fitted with the second sub-wall (113223), and the first locking assembly (1133) is connected to the locking arm (11316) and the second sub-wall (113223) respectively.

16. The battery device (1100) according to any one of claims 1 to 11, characterized in that: The battery device (1100) includes at least two structural beam assemblies (1130) spaced apart from each other, and each structural beam assembly (1130) is connected to the first box wall (1114) of the box body (1110); the battery device (1100) also includes at least one fixing belt (1140), and the two ends of each fixing belt (1140) are respectively connected to the end of the beam body (1131) in any two structural beam assemblies (1130) away from the first box wall (1114).

17. The battery device (1100) according to claim 16, characterized in that The battery device (1100) further includes a plurality of second locking components (1150), and any one end of the fixing belt (1140) is connected to the beam body (1131) via at least one of the second locking components (1150).

18. The battery device (1100) according to claim 17, characterized in that The second locking assembly (1150) includes a locking seat (1151) and a locking member (1152), wherein the locking seat (1151) is connected to the beam body (1131), and the locking member (1152) is respectively connected to the locking seat (1151) and the fixing belt (1140).

19. An energy storage device, characterized in that: The invention comprises a plurality of battery devices (1100) according to any one of claims 1 to 18, wherein the battery devices (1100) are used for storing or providing electrical energy.

20. An energy storage system comprising a power conversion device and the energy storage device according to claim 19, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

21. An electrical device comprising the battery device (1100) according to any one of claims 1 to 18, the energy storage device according to claim 19, or the energy storage system according to claim 20, wherein the battery device (1100) is used to store or provide electrical energy.

22. A charging network comprising a charging pile and the energy storage device according to claim 19 or the energy storage system according to claim 20, wherein the energy storage device is used to provide electrical energy to the charging pile.

Images