Battery box body, battery and electric device

Abstract

The utility model belongs to the technical field of batteries, and provides a battery box body, a battery and a power utilization device.The battery box body comprises a box body part, a structural beam and an adapter component, and the box body part forms a containing space and comprises a box body bottom wall and a box body side wall connected with the box body bottom wall; the structural beam is arranged on the bottom wall of the box body and located in the containing space. The structural beam extends along the wall face of the bottom wall of the box body and forms an extending end. The switching part is connected to the side wall of the box body, and the extension end is in insertion fit with the switching part. The battery box body is not easy to deform when the structural beam is assembled, so that the assembly of the battery monomers is smoother, and the assembly efficiency of the battery is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery box, a battery and an electrical device. Background Art

[0002] A battery is a modular unit formed by combining multiple battery cells. A battery usually includes a box, battery cells, etc. Multiple battery cells are connected in series and in parallel and arranged in a limited accommodation space of the box. A structural beam is usually arranged on the bottom wall of the box. The structural beam divides the accommodation space into different spatial areas to accommodate the battery cells. The opposite side walls of the box are connected by structural beams, thereby enhancing the overall structural strength of the box structure.

[0003] In the related art, the extended end of the structural beam directly contacts and is welded to the side wall of the box, which may easily cause deformation of the battery box, affect the assembly of the battery cell and the battery box, and reduce the assembly efficiency of the battery. Utility Model Content

[0004] The purpose of the present application is to provide a battery box, a battery and an electrical device, aiming to solve the technical problem that the box is easily deformed and the battery assembly efficiency is affected due to the welding method between the structural beam in the battery and the side wall of the box.

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

[0006] A box body portion, formed with an accommodating space, the box body portion comprising a box body bottom wall and a box body side wall connected to the box body bottom wall;

[0007] A structural beam, arranged on the bottom wall of the box body and located in the accommodating space, wherein the structural beam is extended along the wall surface of the bottom wall of the box body and forms an extended end;

[0008] The adapter component is connected to the side wall of the box body, and the extension end is plugged into and matched with the adapter component.

[0009] In this example, the structural beam does not directly conflict with the side wall of the box body. The structural beam and the side wall of the box body are connected and limited by a transition component. There is no need to weld the structural beam and the side wall of the box body, which helps to reduce the risk of deformation of the side wall of the box body and the battery box body, making the assembly of the battery cell smoother and helping to ensure the assembly efficiency of the battery.

[0010] In one embodiment, the structural beam is a structural beam made of a composite material.

[0011] In this example, the structural beam is made of composite materials. The thermal conductivity of the composite materials is small, so the heat dissipation of the battery cells close to the surface of the structural beam will not be too fast, the temperature difference between the battery cells close to and far away from the structural beam will not be too different, and the temperature consistency between each battery cell is better, thereby ensuring the performance of the battery.

[0012] In one of the embodiments, the adapter component is formed with a receiving groove, and the extending end is inserted into the receiving groove.

[0013] In this example, the extension end is inserted into the receiving groove of the adapter component, so that the adapter component can wrap and limit the extension end of the structural beam, which is beneficial to improving the stability of the connection between the adapter component and the extension end. There is no need to process the extension end, thereby improving the convenience of production and connection.

[0014] In one embodiment, the battery box also includes a limiting structure, the extension end is plugged into the adapter component along a first direction, and the limiting structure is respectively connected to the extension end and the adapter component to limit the movement of the extension end relative to the adapter component along the first direction.

[0015] In this example, a limiting structure is provided between the extension end and the adapter component, so that the limiting structure limits and fixes the extension end and the adapter component in parallel to the plug-in direction, thereby improving the reliability of the connection between the extension end and the adapter component.

[0016] In one embodiment, the adapter component includes a support body and a plurality of adapter plates, and the plurality of adapter plates are arranged around a preset axis and connected to the support body to jointly form a receiving groove; the preset axis is parallel to the bottom wall of the box body, and the support body is connected to the side wall of the box body.

[0017] In this example, the support body is used to connect multiple adapter plates and enable the adapter component to be connected to the side wall of the box body. The adapter component adopts a sheet-shaped adapter plate connected to the support body to jointly form a receiving groove. Multiple adapter plates perform circumferential limiting and wrapping support on the extended end, so that the connection between the structural beam and the adapter component is more stable.

[0018] In one embodiment, the structural beam has a beam top wall and two first beam side walls connected to the beam top wall, the two first beam side walls are arranged opposite to each other, and at least three adapter plates are provided, one adapter plate is arranged opposite to the beam top wall, and the remaining adapter plates are arranged corresponding to each of the first beam side walls.

[0019] In this example, three adapter plates are used to limit the top wall of the structural beam and the two opposite first beam side walls respectively, so that the extended end can be limited on the bottom wall of the box body and connected to the side walls of the box body, making the structure of the adapter component simple and the connection reliable.

[0020] In one embodiment, the structural beam also has two oppositely arranged second beam side walls, the second beam side walls are connected to the first beam side walls through a connecting portion, the first beam side walls are parallel to the second beam side walls, and the first beam side walls and the second beam side walls are arranged at intervals in a direction perpendicular to the bottom wall of the box body, and five adapter plates are provided, and the remaining two adapter plates are respectively arranged opposite to the two second beam side walls.

[0021] In this example, by increasing the number of adapter plates, the number of lateral position limits on the structural beam is increased, which helps to improve the reliability of the lateral position limit of the structural beam by the adapter component.

[0022] In one embodiment, the structural beam includes a first beam body and a second beam body, both extending along a second direction, the second direction is parallel to the bottom wall of the box body, the first beam body is arranged on the bottom wall of the box body, and the first beam body has two first beam side walls located on both sides of the second direction; the second beam body is connected to the side of the first beam body facing away from the bottom wall of the box body, the second beam body has the beam top wall and two second beam side walls, the beam top wall is arranged away from the bottom wall of the box body, and along the second direction, the two second beam side walls are respectively located on both sides of the beam top wall.

[0023] In this example, the adapter component in the battery box is designed to design the number and position of the adapter plates so that one adapter plate can be opposite to the top wall of the structural beam to limit the structural beam in the direction away from the bottom wall of the box, and the two adapter plates are arranged opposite to the two first beam side walls, or opposite to the two second beam side walls, to limit the structural beam in parallel with the bottom wall of the box and perpendicular to the second direction, thereby improving the limiting reliability of the adapter component on the extension end.

[0024] In one embodiment, the battery box further includes a connection structure, and the connection structure is connected between the adapter component and the side wall of the box.

[0025] In this example, the adapter component can be movably connected to the side wall of the box through a connecting structure. When the adapter component is assembled with the side wall of the box and the structural beam, it can be assembled with the structural beam first or with the side wall of the box first, thereby making the assembly between the adapter component, the structural beam and the side wall of the box more flexible.

[0026] In one embodiment, the limiting structure includes a locking pin, a first locking hole is formed at the extending end, a second locking hole is formed on the adapter component corresponding to the first locking hole, and the locking pin is inserted into the first locking hole and the second locking hole.

[0027] In this example, the limiting structure is connected to the adapter component and the extension end respectively by plugging. By setting a locking pin, the locking pin is plugged and limited with the first locking hole on the extension end and the second locking hole on the adapter component. The structural design is simple and the operation is convenient.

[0028] In one embodiment, the limiting structure includes a locking stud, a first screw hole is formed at the extending end, a second screw hole is formed on the adapter component corresponding to the first screw hole, and the locking stud is threadedly connected to the first screw hole and the second screw hole respectively.

[0029] In this example, the limiting structure is connected to the adapter component and the extension end respectively by means of threaded connection. By setting a locking stud, the locking stud is threadedly limited with the first screw hole on the extension end and the second screw hole on the adapter component. The structural design is simple and the operation is convenient.

[0030] In one embodiment, the limiting structure includes an adhesive body, a gap space is formed between the transition component and the extension end, and the adhesive body is filled in the gap space.

[0031] In this example, the extension end is bonded to the groove wall, which makes it easier to limit and fix the structural beam and the transition component, thereby improving assembly efficiency.

[0032] In one of the embodiments, a glue injection hole is formed on the transition component, and the glue injection hole is communicated with the gap space.

[0033] In this example, by setting the glue injection hole, the glue injection and limiting process can be carried out after the extended end of the structural beam is inserted into the accommodating groove, which is convenient for adjusting the installation position of the structural beam relative to the box body before glue injection, which is beneficial to ensure the installation accuracy.

[0034] In one embodiment, the connection structure includes a connecting stud, a first threaded hole is formed on the side wall of the box, a second threaded hole is formed on the adapter component corresponding to the first threaded hole, and the connecting stud is threadedly connected to the first threaded hole and the second threaded hole respectively.

[0035] In this example, the connection structure is connected to the side wall of the box and the adapter component by means of threaded connection. By setting a connecting stud, the connecting stud is threadedly limited to the first threaded hole on the side wall of the box and the second threaded hole on the adapter component. The structural design is simple and the operation is convenient.

[0036] In one embodiment, the connection structure includes an adhesive layer, and the adhesive layer is connected between the adapter component and the side wall of the box body.

[0037] In this example, the side wall of the box body and the transition component are bonded together by an adhesive layer, which makes it easier to limit and fix the box body and the transition component, thereby improving assembly efficiency.

[0038] In a second aspect, the present application provides a battery, comprising a battery cell and the battery case in the above embodiment, wherein the battery cell is accommodated in the accommodation space.

[0039] In a third aspect, the present application provides an electrical device, which includes a battery box or a battery in the above-mentioned embodiment, and the battery is used to provide electrical energy.

[0040] 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

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. 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 paying any creative work.

[0042] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0043] Figure 2 A schematic diagram of the exploded structure of a battery provided in some embodiments of the present application;

[0044] Figure 3 A schematic diagram of the exploded structure of a battery box provided in some embodiments of the present application;

[0045] Figure 4 A schematic diagram of the structure of the second part of the middle box portion of the battery box provided in some embodiments of the present application;

[0046] Figure 5 for Figure 4 A magnified view of the A position in the middle;

[0047] Figure 6 Schematic diagram of the structure of the adapter component in the battery box provided in some embodiments of the present application Figure 1 ;

[0048] Figure 7 Schematic diagram of the structure of the adapter component in the battery box provided in some embodiments of the present application Figure 2 ;

[0049] Figure 8 Schematic diagram of the structure of the connection between the adapter component and the extension end in the battery box provided in some embodiments of the present application Figure 1 ;

[0050] Fig. 9 Schematic diagram of the structure of the connection between the adapter component and the extension end in the battery box provided in some embodiments of the present application Figure 2 ;

[0051] Fig.10 Schematic diagram of the structure of the connection between the adapter component and the extension end in the battery box provided in some embodiments of the present application Figure 3 ;

[0052] Fig.11 A schematic diagram of the three-dimensional structure of a structural beam in a battery box provided in some embodiments of the present application;

[0053] Fig.12 A schematic diagram of a cross-sectional structure of a structural beam in a battery box provided in some embodiments of the present application;

[0054] Fig.13 Schematic diagram of the structure of the adapter component in the battery box provided in some embodiments of the present application Figure 3 ;

[0055] Fig.14 Schematic diagram of the structure of the adapter component in the battery box provided in some embodiments of the present application Figure 4 ;

[0056] Fig.15 Schematic diagram of the structure of the connection between the adapter component and the extension end in the battery box provided in some embodiments of the present application Figure 4 .

[0057] Description of reference numerals:

[0058] 1000, vehicle; 1100, battery; 1110, battery box; 1111, box part; 11111, first part; 11112, second part; 11113, accommodating space; 11114, box side wall; 11115, box bottom wall; 1112, structural beam; 11121, extension end; 11122, beam top wall; 11123, first beam side wall; 11124, second beam side wall; 11125, first beam body; 111251, connecting part; 11126, second beam body; 11127, connecting part; 11128, second beam body; 11129, connecting part; 11130, connecting part; 11131, connecting part; 11132, connecting part; 11133, connecting part; 11134, connecting part; 11135, connecting part; 11136, connecting part; 11137, connecting part; 11138, connecting part; 11139, connecting part; 11140, connecting part; 11141, connecting part; 11142, connecting part; 11143, connecting part; 11144, connecting part; 11145, connecting part; 11146, connecting part; 11147, connecting part; 11148, connecting part; 11149, connecting part; 11150, connecting part; 11141, connecting part; 11140, connecting part; 11141, connecting part; 11142, connecting part; 11143, connecting part; 11144, connecting part; 11145, connecting part; 11146, connecting part; 11147, connecting part; 11 127, cavity; 11128, first locking hole; 11129, first threaded hole; 1113, adapter; 11131, adapter plate; 11132, support body; 11133, accommodating groove; 11134, second locking hole; 11135, second threaded hole; 11136, second threaded hole; 11137, lateral opening; 1114, limiting structure; 1115, connecting structure; 1120, battery cell; 1200, controller; 1300, motor; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0059] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0061] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0062] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0063] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0064] 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).

[0065] 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. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] A battery is a modular unit formed by combining multiple battery cells. A battery usually includes a box, battery cells, etc. Multiple battery cells are connected in series and in parallel and arranged in a limited storage space of the box; a structural beam is usually arranged on the bottom wall of the box, and the structural beam divides the storage space into different spatial areas to accommodate the battery cells. The opposite side walls of the box are connected by structural beams, and the overall structural strength of the box can be enhanced by setting up structural beams.

[0068] In the related art, the end of the structural beam is usually directly abutted against the side wall of the box body, and is directly welded at the connection position between the end of the structural beam and the side wall. Welding can easily cause deformation of the side wall of the box body, and then cause deformation of the box body as a whole. The deformation of the box body affects the shape and volume of the accommodating space, and thus hinders the installation of the battery cell, making the installation of the battery cell difficult. In addition, it can also easily cause difficulty in installing other components in the box body, thereby affecting the manufacturing and assembly efficiency of the battery box.

[0069] Therefore, the present application provides a battery box 1110, by setting a conversion component 1113 between the structural beam 1112 and the box side wall 11114, the conversion component 1113 is connected to the box side wall 11114, the conversion component 1113 is plugged into the extension end 11121, so that the extension end 11121 and the structural beam 1112 are positioned and limited by the conversion component 1113, and the conversion component 1113 plays a role of conversion and connection between the structural beam 1112 and the box side wall 11114, so that the structural beam 1112 is not directly connected (or welded) to the box side wall 11114, reducing the influence of the assembly of the structural beam 1112 on the shape and volume of the box part 1111, reducing the deformation of the box part 1111, facilitating the smooth assembly of the battery cell 1120 and the box part 1111, and helping to ensure assembly efficiency.

[0070] Specifically, refer to Figure 2 As shown, an embodiment of the present application provides a battery 1100, which may include a battery cell 1120. The battery 1100 disclosed in the embodiment of the present application may be used in an electrical device that uses the battery 1100 as a power source or various energy storage systems that use the battery 1100 as an energy storage element. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

[0071] 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.

[0072] Please refer to Figure 1 , Figure 1A schematic diagram of the structure 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 1100 is provided inside the vehicle 1000, and the battery 1100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 1100 may be used to power the vehicle 1000, for example, the battery 1100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 1200 and a motor 1300, and the controller 1200 is used to control the battery 1100 to power the motor 1300, for example, for starting, navigating and driving the vehicle 1000.

[0073] In some embodiments of the present application, the battery 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.

[0074] Please refer to Figure 2 , Figure 2 An exploded view of a battery 1100 provided in some embodiments of the present application. The battery 1100 includes a battery case 1110 and a battery cell 1120, wherein the battery cell 1120 is contained in the battery case 1110. The case portion 1111 in the battery case 1110 is used to provide a housing space 11113 for the battery cell 1120, and the battery case 1110 may adopt a variety of structures, for example, the battery case 1110 may include a plurality of parts, and the plurality of parts are combined and connected to form a case structure having a housing space 11113.

[0075] The battery 1100 may be a battery module formed by connecting a plurality of battery cells 1120 in series, in parallel or in a mixed connection, wherein one battery module is contained in a battery box 1110, and a plurality of battery modules are connected in series, in parallel or in a mixed connection to form a whole, for example, a battery module, wherein a plurality of battery modules are arranged in an array and contained in the battery box 1110. The battery 1100 may also include other structures, for example, the battery 1100 may also include a busbar component for realizing electrical connection between the plurality of battery cells 1120.

[0076] The battery cell 1120 refers to the smallest unit constituting the battery 1100. Each battery cell 1120 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 1120 may be cylindrical, flat, rectangular or in other shapes.

[0077] The battery box 1110 is used to accommodate the battery cell 1120 and externally wrap and support the battery cell 1120. According to some embodiments of the present application, refer to Figure 3-5 As shown, an embodiment of the present application provides a battery case 1110, the battery case 1110 includes a case portion 1111, a structural beam 1112 and a transition component 1113, wherein the case portion 1111 is formed with a accommodating space 11113, the case portion 1111 includes a case bottom wall 11115 and a case side wall 11114 connected to the case bottom wall 11115; the structural beam 1112 is disposed on the case bottom wall 11115 and is located in the accommodating space 11113, the structural beam 1112 is extended along the wall surface of the case bottom wall 11115 and forms an extended end 11121 at the end; the transition component 1113 is connected to the case side wall 11114, and the extended end 11121 is plugged into and matched with the transition component 1113.

[0078] Specifically, the box body 1111 can be considered as a shell structure for wrapping and supporting the battery cell 1120. The interior of the box body 1111 forms a receiving space 11113, and the receiving space 11113 is used to receive the battery cell 1120. Therefore, it can be understood that the box body 1111 has a box body bottom wall 11115 for supporting the battery cell 1120, and has a box body side wall 11114 that can surround the battery cell 1120, and the box body side wall 11114 is connected to the box body bottom wall 11115, and the box body side wall 11114 is usually raised by a preset height from the bottom wall 11115 of the box body in a direction away from the bottom wall 11115 of the box body, and is arranged around the center of the bottom wall, thereby forming an inner cavity capable of accommodating a battery cell 1120, and the battery cell 1120 can be accommodated in the inner cavity; of course, the box body portion 1111 should also have a top wall of the box body, which is arranged opposite to the bottom wall 11115 of the box body, and the top wall of the box body can be connected to the side wall 11114 of the box body, thereby closing the inner cavity, thereby forming a closed accommodating space 11113.

[0079] In some embodiments, reference Figure 2 and Figure 3As shown, the box body 1111 may include a first portion 11111 and a second portion 11112, the first portion 11111 and the second portion 11112 cover each other, and the first portion 11111 and the second portion 11112 jointly define a receiving space 11113 for accommodating a battery cell 1120. The second portion 11112 may be a hollow structure with an opening at one end, and a portion of the hollow structure forms an inner cavity. The first portion 11111 may be a plate-like structure, and the first portion 11111 covers the open side of the second portion 11112, so that the first portion 11111 and the second portion 11112 jointly define a receiving space 11113. In this example, the first portion 11111 may be considered to be the top wall of the box body 1111, and the second portion 11112 may include a bottom wall 11115 of the box body. and a box side wall 11114; optionally, the first part 11111 and the second part 11112 may both be hollow structures with one side open, the hollow structure of the second part 11112 forms an inner cavity, the open side of the first part 11111 covers the open side of the second part 11112 to jointly define a accommodating space 11113, wherein the first part 11111 may include a box top wall, and the second part 11112 may include a box bottom wall 11115 and a box side wall 11114. Of course, the box portion 1111 formed by the first part 11111 and the second part 11112 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0080] The structural beam 1112 can be considered as a linear structure (or rod-shaped structure) with a preset extension length. The structural beam 1112 must be formed with two extension ends 11121. When the structural beam 1112 is in a straight line, the two extension ends 11121 are arranged opposite to each other; the structural beam 1112 is located in the accommodating space 11113, and is extended along the wall surface of the bottom wall 11115 of the box body to be arranged on the bottom wall 11115 of the box body. It can be understood that the wall surface of the bottom wall 11115 of the box body is the surface of the bottom wall 11115 of the box body facing the accommodating space 11113. The two extension ends 11121 of the structural beam 1112 extend toward the box side wall 11114 respectively. It should be noted that the box side wall 11114 is arranged around the center of the box bottom wall 11115. Therefore, it can be known that the box side wall 11114 must have two opposite side wall parts, and the two extension ends 11121 of the structural beam 1112 extend toward the two side walls respectively. Figure 8-11 and Fig.14 As shown, the structural beam 1112 may adopt a hollow structure. For example, a cavity 11127 is formed at the center of the structural beam 1112. The cavity 11127 may be provided with one or more cavities, which is helpful to reduce the weight of the structural beam 1112 and to achieve lightweight battery box 1110.

[0081] The adapter component 1113 is connected to the side wall 11114 of the box body. The connection method between the adapter component 1113 and the side wall 11114 of the box body can be various. For example, the adapter component 1113 and the side wall 11114 of the box body can be bonded, bolted, locked with a locking pin, welded, etc. For another example, the adapter component 1113 can be integrally formed with the side wall 11114 of the box body.

[0082] The adapter component 1113 is used to connect the box side wall 11114 with the extension end 11121 of the structural beam 1112. Specifically, the adapter component 1113 is plugged into the box side wall 11114, so as to form a limit between the adapter component 1113 and the box side wall 11114 by plugging. For example, the extension end 11121 of the structural beam 1112 is plugged into the adapter component 1113 along a direction parallel to the box bottom wall 11115 (i.e., the first direction described below), so as to limit the structural beam 1112 from moving away from the box bottom wall 11115. 5, and can limit the movement of the structural beam 1112 in the direction parallel to the box side wall 11114 within a plane parallel to the box bottom wall 11115; for another example, the extending end 11121 of the structural beam 1112 is plugged into the adapter component 1113 along a direction perpendicular to the box bottom wall 11115 (i.e., the first direction described below), thereby limiting the movement of the structural beam 1112 in any direction within a plane parallel to the box bottom wall 11115; it can be seen that the adapter component 1113 realizes the assembly and limiting of the structural beam 1112 and the box body 1111.

[0083] The extension end 11121 is plugged into the adapter component 1113, wherein one way is that the extension end 11121 is plugged into the interior of the adapter component 1113, so that the adapter component 1113 wraps and surrounds the extension end 11121 on the outside of the extension end 11121, for example, a plug-in slot is provided on the adapter component 1113, and the extension end 11121 is plugged into the plug-in slot; another way is that the adapter component 1113 is plugged into the interior of the extension end 11121, so that the extension end 11121 wraps and surrounds the outside of the adapter component 1113, for example, a plug-in slot is provided on the extension end 11121, and the adapter component 1113 is plugged into the plug-in slot in whole or in part.

[0084] It should be noted that the structural beam 1112 has two extension ends 11121, and the adapter component 1113 can be provided with one, then, one of the extension ends 11121 of the structural beam 1112 is connected to the side wall 11114 of the box body through the adapter component 1113, then, the other extension end 11121 can be connected to the side wall 11114 of the box body through other methods, for example, bonding, welding, bolt connection, etc.; the adapter component 1113 can also be provided with two, then, the two extension ends 11121 of the structural beam 1112 are respectively connected to different side wall parts of the side wall 11114 of the box body through the corresponding adapter components 1113.

[0085] When the structural beam 1112 is assembled with the box body 1111, the adapter component 1113 can be first connected to the box side wall 11114, the structural beam 1112 is arranged on the box bottom wall 11115, and the extending end 11121 of the structural beam 1112 is plugged into the adapter component 1113, so that the movement of the structural beam 1112 is limited by the adapter component 1113; or, the structural beam 1112 can be first plugged into the adapter component 1113, and then the structural beam 1112 and the adapter component 1113 are assembled as a whole with the box side wall 11114, and the adapter component 1113 and the box side wall 11114 can be connected by bonding, bolting, welding, etc.

[0086] Since the box body 1111 is used to accommodate the battery cell 1120, the box body 1111 as a whole needs to have high strength and corrosion resistance, so the box body 1111 can be made of metal materials with high strength, such as aluminum alloy materials, steel, magnesium alloy, etc. Aluminum alloy, steel, and magnesium alloy all have good strength and corrosion resistance. Steel also has high rigidity. Magnesium alloy and aluminum alloy have the advantage of being lightweight, which is conducive to reducing the weight of the box body 1111 and making the box body 1111 lightweight. The box body 1111 can also be a box structure made of composite materials, thereby reducing the weight of the battery box 1110. The structural beam 1112 can be a beam structure made of metal materials or a beam structure made of composite materials.

[0087] In this example, the structural beam 1112 does not directly conflict with the box side wall 11114. The structural beam 1112 and the box side wall 11114 are connected and limited by the adapter component 1113. There is no need to weld the structural beam 1112 and the box side wall 11114, which helps to reduce the risk of deformation of the box side wall 11114 and the battery box 1110, making the assembly of the battery cell 1120 smoother and helping to ensure work efficiency.

[0088] In some examples, structural beam 1112 is a structural beam made of composite materials.

[0089] For the structural beam 1112, the structural beam 1112 is located in the accommodating space 11113, and some battery cells 1120 arranged on the side of the structural beam 1112 are close to the structural beam 1112, or can contact the surface of the structural beam 1112, thereby absorbing the heat on the surface of these battery cells 1120, while the heat released by the battery cells 1120 far away from the structural beam 1112 is basically not transferred to the structural beam 1112. Therefore, if the thermal conductivity of the structural beam 1112 is too high, the structural beam 1112 will dissipate the heat to the battery cells close to it too quickly, which will cause the heat of the battery cells 1120 close to the structural beam 1112 to be too low compared to the temperature of the battery cells 1120 far away from the structural beam 1112, thereby causing the temperature difference between the battery cells 1120 to be too large, affecting the performance of the battery 1100.

[0090] Therefore, in this example, the structural beam 1112 is made of composite materials, and the thermal conductivity of the composite materials is small, so that the heat dissipation of the battery cells 1120 close to the surface of the structural beam 1112 will not be too fast, and the temperature difference between the battery cells 1120 close to and far from the structural beam 1112 will not be too large, and the temperature consistency between the battery cells 1120 is better, so as to ensure the performance of the battery 1100. Among them, the composite materials may include glass fiber reinforced plastics, carbon fiber composite materials, metal matrix composite materials, nano composite materials, wood plastic composite materials, etc.

[0091] In addition, in this example, the material of the structural beam 1112 is a composite material. The composite material has a low density and a light weight, which is beneficial to reducing the weight of the battery box 1110. The structural beam 1112 of the composite material also has a high specific strength and specific stiffness, but is relatively light. It can reduce the weight of the battery box 1110 while ensuring the structural strength of the battery box 1110, which is beneficial to achieving lightweight battery 1100.

[0092] In some examples, reference Figure 6-10 and Figure 12-15 As shown, the adapter component 1113 is formed with a receiving groove 11133 , and the extending end 11121 is inserted into the receiving groove 11133 .

[0093] Specifically, the accommodating groove 11133 is provided on the adapter component 1113. The adapter component 1113 may adopt a solid structure, and a groove is provided on the surface of the adapter component 1113 to form the accommodating groove 11133. Alternatively, the adapter component 1113 adopts a plate-like structure, and the accommodating groove 11133 is formed by bending the plate. The notch profile of the accommodating groove 11133 matches or is consistent with the outer profile of the end face of the extension end 11121, so that the groove wall of the accommodating groove 11133 can abut against and limit the outer peripheral surface of the extension end 11121.

[0094] The groove wall of the accommodating groove 11133 can be a continuous wall surface, or the accommodating groove 11133 can have a plurality of groove walls, each of which is independent of each other, and there can be a spacing space between adjacent groove walls; in addition, the accommodating groove 11133 has a notch, and the extension end 11121 is inserted into the accommodating groove 11133 through the notch, and the accommodating groove 11133 can also have a lateral opening 11137, so that the lateral groove wall of the accommodating groove 11133 is through-set to form the lateral opening 11137, and the lateral opening 11137 can be arranged opposite to the bottom wall 11115 of the box body, so that the extension end 11121 can protrude from the outside of the lateral opening 11137 after being inserted into the accommodating groove 11133, so that the extension end 11121 can also contact the bottom wall 11115 of the box body.

[0095] In this example, the extension end 11121 is inserted into the receiving groove 11133 of the adapter component 1113, so that the adapter component 1113 can wrap and limit the extension end 11121 of the structural beam 1112, which is beneficial to improving the stability of the connection between the adapter component 1113 and the extension end 11121. There is no need to process the extension end 11121, thereby improving the convenience of production and connection.

[0096] In some examples, reference Figure 3 , Figure 5 , Figure 8-10 and Fig.15 As shown, the battery box 1110 also includes a limiting structure 1114, the extension end 11121 is plugged into the adapter component 1113 along the first direction X, and the limiting structure 1114 is respectively connected to the extension end 11121 and the adapter component 1113 to limit the movement of the extension end 11121 along the first direction X relative to the adapter component 1113.

[0097] Specifically, the limiting structure 1114 is used to limit the extension end 11121 from being separated from the adapter component 1113. For example, the limiting structure 1114 is used to limit the extension end 11121 from being separated from the accommodating groove 11133. Therefore, it can be understood that the limiting structure 1114 is used to limit the movement of the extension end 11121 relative to the adapter component 1113 along the plug-in direction of the extension end 11121. Therefore, it can be known that the first direction X is the plug-in direction of the extension end 11121 relative to the adapter component 1113, and the first direction X can also be understood as the groove depth direction of the accommodating groove 11133.

[0098] The limiting structure 1114 can have various forms. For example, the limiting structure 1114 can adopt an adhesive structure with adhesive force, or the limiting structure 1114 can also adopt a locking structure or a bolt structure with a locking function, or the limiting structure 1114 can also adopt a welding structure by welding, etc.

[0099] In this example, the extension end 11121 of the structural beam 1112 is plugged into the adapter component 1113, and the adapter component 1113 can limit the structural beam 1112 in a direction away from the bottom wall 11115 of the box body or in a direction parallel to and away from the side wall 11114 of the box body. However, in the plug-in direction of the extension end 11121 and the adapter component 1113, the extension end 11121 still has a risk of detaching relative to the adapter component 1113. Therefore, a limiting structure 1114 is provided between the extension end 11121 and the adapter component 1113, so that the limiting structure 1114 can limit and fix the extension end 11121 and the adapter component 1113 in a direction parallel to the plug-in direction, thereby improving the reliability of the connection between the extension end 11121 and the adapter component 1113.

[0100] In some examples, reference Figure 6 , Figure 7 , Fig.13 and Fig.14 As shown, the adapter component 1113 includes a support body 11132 and a plurality of adapter plates 11131, and the plurality of adapter plates 11131 are arranged around a preset axis and connected to the support body 11132 to jointly form a receiving groove 11133; the preset axis is parallel to the bottom wall 11115 of the box body, and the support body 11132 is connected to the side wall 11114 of the box body.

[0101] Specifically, the preset axis is the arrangement and surrounding axis of the plurality of adapter plates 11131, and the preset axis forms the central axis of the receiving groove 11133 (i.e., the axis parallel to the groove depth direction), and the plurality of adapter plates 11131 form the groove wall of the receiving groove 11133. The plurality of adapter plates 11131 are connected or spaced apart at the side positions, and the plurality of adapter plates 11131 may be independent of each other. The adapter plates 11131 may not be arranged at the position of the adapter component 1113 opposite to the bottom wall 11115 of the box body, so that the above-mentioned lateral opening 11137 is formed at the position of the receiving groove 11133 opposite to the bottom wall 11115 of the box body, and the space inside the receiving groove 11133 directly passes through the bottom wall 11115 of the box body, so that the extension end 11121 can abut against the bottom wall 11115 of the box body at the lateral notch position after being inserted into the receiving groove 11133.

[0102] The support body 11132 is connected to a plurality of adapter sheets 11131, and the plurality of adapter sheets 11131 are convexly connected to the support body 11132. The adapter sheets 11131 are in the form of sheets and can be prepared by a plate body. The support body 11132 and the plurality of adapter sheets 11131 are jointly arranged to form a receiving groove 11133, and the support body 11132 can be considered as the groove bottom of the receiving groove 11133. The support body 11132 can also be in the form of sheets and can be prepared by a plate body. The plate surface of the adapter sheet 11131 can be arranged perpendicularly to the plate surface of the support body 11132, and adjacent adapter sheets 11131 can be arranged at a preset angle, and the range of the preset angle is greater than 0° and less than or equal to 90°. For example, when the preset angle is 90°, the adapter sheet 11131 is arranged perpendicularly to the support plate.

[0103] The support body 11132 is also used to connect with the side wall 11114 of the box body. The support body 11132 and the side wall 11114 of the box body can be connected by bolt connection, locking pin insertion, bonding, welding or other connection methods. When the support body 11132 is in the form of a sheet, the surface of the support body 11132 and the side wall 11114 of the box body are arranged in a fit relationship.

[0104] The support body 11132 and the plurality of adapter sheets 11131 may be an integrally formed structure, and the support body 11132 and the adapter sheets 11131 are both in the shape of a plate (or sheet), and the adapter sheets 11131 and the support body 11132 may be prepared by a bending process. The adapter sheets 11131 and the support body 11132 may also be detachably connected by a connecting assembly, or the adapter sheets 11131 and the support body 11132 may be connected by welding.

[0105] The limiting structure 1114 can be connected between the extension end 11121 and the adapter plate 11131 , so that the extension end 11121 cannot escape from the accommodating space 11113 , thereby limiting and fixing the extension end 11121 .

[0106] In this example, the support body 11132 is used to connect multiple adapter plates 11131, and can connect the adapter component 1113 to the side wall 11114 of the box body. The adapter component 1113 adopts a sheet-shaped adapter plate 11131 to be connected with the support body 11132 to jointly form a receiving groove 11133. Multiple adapter plates 11131 circumferentially limit and wrap the extension end 11121 to support it, so that the connection between the structural beam 1112 and the adapter component 1113 is more stable.

[0107] In some examples, reference Figure 6-10As shown, the structural beam 1112 has a beam top wall 11122 and two first beam side walls 11123 both connected to the beam top wall 11122, the two first beam side walls 11123 are arranged opposite to each other, and at least three adapter plates 11131 are provided, one adapter plate 11131 is arranged opposite to the beam top wall 11122, and the remaining two adapter plates 11131 are arranged corresponding to each first beam side wall 11123.

[0108] Specifically, the cross-section of the structural beam 1112 can be in various shapes. For example, the outer contour of the cross-section of the structural beam 1112 can be a polygon, such as a rectangle. However, the structural beam 1112 has a beam top wall 11122 and at least two first beam side walls 11123 located on both sides of the beam top wall 11122, and the two first beam side walls 11123 are arranged opposite to each other. Among them, the beam top wall 11122 refers to the surface of the structural beam 1112 on the side facing away from the bottom wall 11115 of the box body, and the first beam side wall 11123 refers to the surfaces on both sides along the extension direction of the structural beam 1112. For example, the structural beam 1112 is extended in the horizontal direction, the beam top wall 11122 refers to the upper top surface of the structural beam 1112, and the first beam side wall 11123 refers to the side surfaces located on both sides (or the left and right sides) of the beam top wall 11122. The two first beam side walls 11123 are arranged opposite to each other, and the two first beam side walls 11123 can also be arranged at an angle, and the angle range is 0°-90°, but does not include 90°. When the angle is 0°, the two first beam side walls 11123 are arranged in parallel.

[0109] Three adapter plates 11131 are provided, and the three adapter plates 11131 and the support body 11132 are jointly arranged to form a receiving groove 11133, so that the extension end 11121 can be plugged into the receiving groove 11133. After the extension end 11121 is plugged into the adapter component 1113, one adapter plate 11131 is arranged opposite to the beam top wall 11122, another adapter plate 11131 is arranged opposite to a first beam side wall 11123, and another adapter plate 11131 is arranged opposite to another first beam side wall 11123. It can be understood that the extension end 11121 is plugged into the receiving groove 11133, so the three adapter plates 11131 are arranged opposite to the beam top wall 11122. The connecting pieces 11131 are all located outside the outer surfaces of the beam top wall 11122 and the first beam side wall 11123; the adapter piece 11131 opposite to the beam top wall 11122 can limit the movement of the extension end 11121 in the direction away from the bottom wall 11115 of the box body, and the two adapter pieces 11131 opposite to the first beam side wall 11123 can limit the movement of the extension end 11121 in the direction parallel to the bottom wall 11115 of the box body and parallel to the side wall 11114 of the box body. The three adapter pieces 11131 form a limit for the extension end 11121, so that the extension end 11121 cannot move away from the bottom wall 11115 of the box body.

[0110] In this example, three adapter plates 11131 are used to limit the top wall 11122 of the structural beam 1112 and the two opposite first beam side walls 11123, respectively, so that the extended end 11121 can be limited on the bottom wall 11115 of the box body and connected to the side wall 11114 of the box body, so that the structure of the adapter component 1113 is simple and the connection is reliable.

[0111] In some examples, reference Figure 11-15 As shown, the structural beam 1112 also has two oppositely arranged second beam side walls 11124, the second beam side walls 11124 are connected to the first beam side walls 11123 through a connecting portion 111251, the first beam side walls 11123 are parallel to the second beam side walls 11124, and the first beam side walls 11123 and the second beam side walls 11124 are arranged at intervals in a direction perpendicular to the bottom wall 11115 of the box body, and five adapter plates 11131 are provided, and the remaining two adapter plates 11131 are respectively arranged corresponding to the two second beam side walls 11124.

[0112] Specifically, for the structural beam 1112, the cross-section of the structural beam 1112 can have a variety of shapes. For example, the structural beam 1112 is stepped. For example, the side of the structural beam 1112 is formed with a step, so that the structural beam 1112 forms at least two beam sides on the side, namely, a first beam side wall 11123 and a second beam side wall 11124. The first beam side wall 11123 and the second beam side wall 11124 are arranged at intervals up and down in a direction perpendicular to the bottom wall 11115 of the box body. The first beam side wall 11123 and the second beam side wall 11124 are respectively formed on the two opposite sides of the structural beam 1112. The second beam side wall 11124 and the first beam side wall 11123 can be transitionally connected through a connecting portion 111251. The connecting portion 111251 can be considered as a part of the first beam body 11125 of the structural beam 1112.

[0113] Therefore, in this example, on the basis of the three adapter plates 11131, at least two more adapter plates 11131 are added, that is, the adapter component 1113 includes at least five adapter plates 11131, and the five adapter plates 11131 are arranged around a preset axis to form a accommodating groove 11133, and the two added adapter plates 11131 are respectively arranged opposite to the two second beam side walls 11124, thereby further moving the structural beam 1112 in a direction parallel to the bottom wall 11115 of the box body and parallel to the side walls 11114 of the box body.

[0114] In this example, by increasing the number of adapter plates 11131 , the number of lateral limiting portions of the structural beam 1112 is increased, which helps to improve the reliability of the lateral limiting portion of the structural beam 1112 by the adapter component 1113 .

[0115] In some examples, reference Figure 11-15 As shown, the structural beam 1112 includes a first beam body 11125 and a second beam body 11126, both extending along the second direction Y, the second direction Y is parallel to the bottom wall 11115 of the box body, the first beam body 11125 is arranged on the bottom wall 11115 of the box body, and the first beam body 11125 has two first beam side walls 11123 located on both sides of the second direction Y; the second beam body 11126 is connected to the side of the first beam body 11125 facing away from the bottom wall 11115 of the box body, the second beam body 11126 has a beam top wall 11122 and two second beam side walls 11124, the beam top wall 11122 is arranged away from the bottom wall 11115 of the box body, and along the second direction Y, the two second beam side walls 11124 are respectively located on both sides of the beam top wall 11122.

[0116] Specifically, the second direction Y refers to the extension direction of the structural beam 1112, that is, the length direction of the structural beam 1112, that is, the extension direction of the first beam body 11125 and the second beam body 11126; the first beam body 11125 is connected to the bottom wall 11115 of the box body, and since the second direction Y is parallel to the bottom wall 11115 of the box body, it can be known that the first beam body 11125 is arranged in contact with the bottom wall 11115 of the box body along the length direction. The second beam body 11126 is located on the side of the first beam body 11125 that is away from the bottom wall 11115 of the box body, that is, the second beam body 11126 is located at the top of the first beam body 11125 and extends in the same direction as the first beam body 11125, and the second beam body 11126 protrudes from the top of the first beam body 11125 by a certain height.

[0117] The extended end 11121 of the structural beam 1112 may refer to the extended end 11121 of the first beam body 11125 , or the extended end 11121 of the second beam body 11126 , or may be a combination of the extended end 11121 of the first beam body 11125 and the extended end 11121 of the second beam body 11126 .

[0118] For the extended end 11121 of the first beam body 11125, two opposite side walls are formed on both sides of the first beam body 11125 along the extension direction of the first beam body 11125, that is, along the second direction Y. The side walls can be understood as the above-mentioned first beam side walls 11123. The two first beam side walls 11123 can be parallel to each other or arranged at an angle. The outer contour shape of the cross section of the first beam body 11125 can be polygonal, for example, a rectangle, and the two first beam side walls 11123 are the two sides of the rectangle.

[0119] For the extension end 11121 of the second beam body 11126, along the extension direction of the second beam body 11126, that is, along the second direction Y, two opposite side walls are formed on both sides of the second beam body 11126, and the two side walls can be understood as second beam side walls 11124. The two second beam side walls 11124 can be arranged in parallel or at an angle, and the cross-sectional outer contour of the second beam body 11126 can be polygonal, for example, rectangular, and the two second beam side walls 11124 are the two sides of the rectangle. The two first beam side walls 11123 can be arranged parallel to the two second beam side walls 11124, and are perpendicular to the bottom wall 11115 of the box body. The surface of the second beam body 11126 facing away from the first beam body 11125 is the beam top wall 11122. The beam top wall 11122 can be parallel to the bottom wall 11115 of the box body. Therefore, the height of the second beam body 11126 can be considered as the distance between the beam top wall 11122 of the second beam body 11126 and the top surface of the first beam body 11125 perpendicular to the second direction Y.

[0120] For the adapter component 1113, for example, when the adapter component 1113 includes three adapter plates 11131, one adapter plate 11131 is arranged opposite to the beam top wall 11122, and the other two adapter plates 11131 can correspond one-to-one to the two first beam side walls 11123 and are arranged opposite to each other, or, the other two adapter plates 11131 correspond one-to-one to the two second beam side walls 11124 and are arranged opposite to each other, both of which can achieve the limitation of the extension end 11121.

[0121] For example, when the adapter component 1113 includes five adapter plates 11131, one adapter plate 11131 is arranged opposite to the beam top wall 11122, two of which correspond one-to-one to the two first beam side walls 11123 and are arranged opposite to each other, and the remaining two adapter plates 11131 correspond one-to-one to the two second beam side walls 11124 and are arranged opposite to each other, all of which can achieve the limitation of the extension end 11121 and improve the limitation reliability.

[0122] Combined with the shape of the structural beam 1112, in one case, the distance between the two first beam side walls 11123 is greater than or equal to the distance between the two second beam side walls 11124, then correspondingly, the distance between the two adapter plates 11131 respectively opposite to the two first beam side walls 11123 is greater than or equal to the distance between the two adapter plates 11131 respectively opposite to the two second beam side walls 11124; in another case, the distance between the two first beam side walls 11123 is less than the distance between the two second beam side walls 11124, then correspondingly, the distance between the two adapter plates 11131 respectively opposite to the two first beam side walls 11123 is less than the distance between the two adapter plates 11131 respectively opposite to the two second beam side walls 11124. The position setting of the adapter plates 11131 in the adapter component 1113 and the distance between the oppositely arranged adapter plates 11131 will be arranged to match the shape of the structural beam 1112.

[0123] In this example, the structural beam 1112 is a combined beam or a special-shaped beam with an irregular cross-sectional shape. For the structural beam 1112 including the first beam body 11125 and the second beam body 11126, the adapter component 1113 in the battery box 1110 is designed to design the number and position of the adapter plates 11131 so that one adapter plate 11131 can be opposite to the beam top wall 11122 of the structural beam 1112 to limit the structural beam 1112 in the direction away from the box bottom wall 11115, and the two adapter plates 11131 are arranged opposite to the two first beam side walls 11123, or opposite to the two second beam side walls 11124, so as to limit the structural beam 1112 in a direction parallel to and perpendicular to the box bottom wall 11115, thereby improving the limiting reliability of the adapter component 1113 on the extension end 11121.

[0124] In some examples, reference Figure 3 , Figure 8 , Fig. 9 and Fig.15 As shown, the battery box 1110 further includes a connection structure 1115 , and the connection structure 1115 is connected between the adapter component 1113 and the box side wall 11114 .

[0125] Specifically, the adapter component 1113 is an independent component from the box body 1111, and the adapter component 1113 and the box body side wall 11114 need to be connected and fixed by a connecting structure 1115; the connecting structure 1115 can have various forms. For example, the connecting structure 1115 can adopt an adhesive structure with adhesive force, or the connecting structure 1115 can also adopt a locking structure or a bolt structure with a locking function, or the connecting structure 1115 can also adopt a welding structure by welding, etc.

[0126] When the battery box 1110 is assembled, the adapter component 1113 can first be plugged into the extended end 11121 of the structural beam 1112, and the limited connection between the extended end 11121 and the adapter component 1113 can be made through the limiting structure 1114, and then the adapter component 1113 and the structural beam 1112 are assembled as a whole with the box body 1111, and the adapter component 1113 is connected to the side wall 11114 of the box body through the connecting structure 1115; or, the adapter component 1113 can first be assembled on the side wall 11114 of the box body through the connecting structure 1115, and then be plugged into the extended end 11121 of the structural beam 1112, and the limited connection between the extended end 11121 and the adapter component 1113 can be made through the limiting structure 1114, so as to realize the assembly of the structural beam 1112 and the box body 1111.

[0127] In this example, the adapter component 1113 can be movably connected to the box side wall 11114 through the connecting structure 1115. When the adapter component 1113 is assembled with the box side wall 11114 and the structural beam 1112, it can be assembled with the structural beam 1112 first or with the box side wall 11114 first, thereby making the assembly between the adapter component 1113 and the structural beam 1112 and the box side wall 11114 more flexible.

[0128] In some examples, reference Figure 6-9 and Fig.15 As shown, the limiting structure 1114 includes a locking pin, a first locking hole 11128 is defined in the extension end 11121, a second locking hole 11134 is defined on the adapter component 1113 corresponding to the first locking hole 11128, and the locking pin is inserted into the first locking hole 11128 and the second locking hole 11134.

[0129] Specifically, the locking pin is a columnar or rod-shaped structure, and the first locking hole 11128 can be opened on the side of the extension end 11121 facing away from the bottom wall 11115 of the box body, so that the central axis of the first locking hole 11128 is perpendicular to the bottom wall 11115 of the box body; or, the first locking hole 11128 can be opened on the side of the extension end 11121, so that the central axis of the first locking hole 11128 is parallel to the bottom wall 11115 of the box body; correspondingly, the adapter component 1113 A second locking hole 11134 is provided on the adapter plate 11131 corresponding to the first locking hole 11128, and the central axes of the first locking hole 11128 and the second locking hole 11134 are collinear, and the locking pin is inserted into the first locking hole 11128 and the second locking hole 11134, thereby limiting the position between the adapter component 1113 (specifically the adapter plate 11131) and the extension end 11121.

[0130] It should be noted that there may be multiple locking pins, and correspondingly, the number of first locking holes 11128 and second locking holes 11134 are the same as the number of locking parts, and one locking pin is correspondingly inserted into one first locking hole 11128 and one second locking hole 11134.

[0131] In this example, the limiting structure 1114 is connected to the adapter component 1113 and the extension end 11121 respectively by plugging. By setting a locking pin, the locking pin is plugged and limited with the first locking hole 11128 on the extension end 11121 and the second locking hole 11134 on the adapter component 1113. The structural design is simple and the operation is convenient.

[0132] In some examples, reference Figure 6-9 and Fig.15 As shown, the limiting structure 1114 includes a locking stud, a first screw hole 11129 is formed at the extension end 11121, a second screw hole 11135 is formed on the adapter component 1113 corresponding to the first screw hole 11129, and the locking stud is threadedly connected to the first screw hole 11129 and the second screw hole 11135 respectively.

[0133] Specifically, the locking stud is a columnar or rod-shaped structure, and an external thread is formed on the outer surface of the locking stud. The locking stud may include a screw; an internal thread is formed on the inner hole wall of the first screw hole 11129 and the second screw hole 11135, and the first screw hole 11129 can be opened on the side of the extension end 11121 facing away from the bottom wall 11115 of the box body, so that the central axis of the first screw hole 11129 is parallel to the bottom wall 11115 of the box body; or, the first screw hole 11129 can be opened on the side of the extension end 11121, so that the central axis of the first screw hole 11129 is parallel to the bottom wall 11115 of the box body. The axis is parallel to the bottom wall 11115 of the box body; correspondingly, a second screw hole 11135 is opened on the adapter component 1113, specifically, a second screw hole 11135 is opened on the adapter plate 11131 corresponding to the first screw hole 11129, and the central axes of the first screw hole 11129 and the second screw hole 11135 are collinear, and the locking studs are threadedly connected to the first screw hole 11129 and the second screw hole 11135 respectively, thereby limiting the position between the adapter component 1113 (specifically the adapter plate 11131) and the extension end 11121.

[0134] It should be noted that there may be multiple locking studs, and correspondingly, the number of first screw holes 11129 and second screw holes 11135 are the same as the number of locking studs, and one locking stud corresponds to a first screw hole 11129 and a second screw hole 11135 threaded connection.

[0135] In this example, the limiting structure 1114 is respectively connected to the adapter component 1113 and the extension end 11121 by means of threaded connection. By setting a locking stud, the locking stud is threadedly limited with the first screw hole 11129 on the extension end 11121 and the second screw hole 11135 on the adapter component 1113. The structural design is simple and the operation is convenient.

[0136] In some examples, reference Fig.10 As shown, the limiting structure 1114 includes an adhesive body, and a gap space is formed between the transition component 1113 (specifically, the transition piece 11131) and the extension end 11121, and the adhesive body fills the gap space.

[0137] Specifically, the extension end 11121 is inserted into the receiving groove 11133 of the adapter component 1113. It can be known that the outer surface of the extension end 11121 will be in contact with the groove wall of the receiving groove 11133, or a gap space will be formed between the outer surface of the extension end 11121 and the groove wall of the receiving groove 11133; when the gap space is formed between the extension end 11121 and the groove wall, the adhesive can be filled in the gap space, thereby connecting the extension end 11121 and the adapter component 1113 (specifically the adapter sheet 11131) through the adhesive, thereby forming a limit between the extension end 11121 and the adapter component 1113.

[0138] The adhesive body can adopt a liquid adhesive (or colloid), and the adhesive is solidified by air drying, preheating, etc. Alternatively, the adhesive body can also adopt a solid adhesive layer structure, and the adhesive layer structure has two opposite adhesive surfaces. The adhesive layer is accommodated in the gap space, and one bonding surface is bonded to the surface of the extension end 11121, and the other bonding surface is bonded to the surface of the groove wall (i.e., the adapter 11131).

[0139] In this example, the extension end 11121 is bonded to the groove wall, so that the positioning and fixation between the structural beam 1112 and the transition component 1113 are more convenient, which is conducive to improving the assembly efficiency.

[0140] In some examples, a glue injection hole is formed on the transition component 1113, and the glue injection hole is connected to the gap space.

[0141] Specifically, the glue injection hole can adopt a through-hole structure, and the glue injection hole is connected to the gap space, so that the adhesive can be injected into the gap space through the glue injection hole. It can be known that the adhesive is a liquid adhesive, and the adhesive can be cured in the gap space. Therefore, when the extension end 11121 and the adapter component 1113 are assembled, after the extension end 11121 is inserted into the receiving groove 11133, a glue injection device can be used to connect the glue injection hole, and the flowing adhesive can be input into the glue injection hole to allow the adhesive to enter the gap space. After the glue injection is completed, the glue injection device can be removed.

[0142] In this example, by setting the glue injection hole, after the extension end 11121 of the structural beam 1112 is inserted into the accommodating groove 11133, the glue injection and limiting process can be performed, which is convenient for adjusting the installation position of the structural beam 1112 relative to the box body 1111 before glue injection, which is beneficial to ensuring the installation accuracy.

[0143] In some examples, reference Figure 3 and Figure 6-9 As shown, the connection structure 1115 includes a connecting stud, a first threaded hole is formed on the side wall 11114 of the box body, a second threaded hole 11136 is formed on the support body 11132 corresponding to the first threaded hole, and the connecting stud is threadedly connected to the first threaded hole and the second threaded hole 11136 respectively.

[0144] Specifically, the connecting stud is a columnar or rod-shaped structure, and an external thread is formed on the outer surface of the connecting stud, and the connecting stud may include a screw; an internal thread is formed on the inner hole wall of the first threaded hole and the second threaded hole 11136, and the first threaded hole may be a through hole or a blind hole, and the opening of the blind hole is located on the inner wall surface of the side wall 11114 of the box body (that is, the wall surface facing the accommodating space 11113), and the central axis of the first threaded hole may be parallel to the bottom wall 11115 of the box body; correspondingly, a second threaded hole 11136 is correspondingly opened on the adapter component 1113 (specifically the support body 11132) corresponding to the first threaded hole, and the central axes of the first threaded hole and the second threaded hole 11136 are collinear, and the connecting stud is threadedly connected to the first threaded hole and the second threaded hole 11136 respectively, thereby limiting the position between the side wall 11114 of the box body and the adapter component 1113.

[0145] It should be noted that there may be multiple connecting studs, and correspondingly, the number of first threaded holes and second threaded holes 11136 are the same as the number of connecting studs, and one connecting stud is threadedly connected to one first threaded hole and one second threaded hole 11136.

[0146] In this example, the connection structure 1115 is connected to the side wall 11114 of the box and the adapter component 1113 (specifically the support body 11132) by means of threaded connection. By setting a connecting stud, the connecting stud is threadedly connected to the first threaded hole on the side wall 11114 of the box and the second threaded hole 11136 on the adapter component 1113 to limit the position. The structural design is simple and the operation is convenient.

[0147] In some examples, the connection structure 1115 includes an adhesive layer connected between the adapter component 1113 and the box side wall 11114 .

[0148] Specifically, the adhesive layer can adopt a solid adhesive layer structure, for example, double-sided tape, etc.; the adhesive layer has two opposite adhesive surfaces, and the adhesive layer is arranged between the adapter component 1113 (specifically the support body 11132) and the side wall 11114 of the box body. One adhesive surface of the adhesive layer is bonded to the wall surface of the side wall 11114 of the box body, and the other adhesive surface is bonded to the surface of the support body 11132 of the adapter component 1113, so as to connect the side wall 11114 of the box body with the adapter component 1113, and limit and fix the two.

[0149] In this example, the box side wall 11114 and the adapter component 1113 are bonded together by an adhesive layer, so that the limiting and fixing between the box body 1111 and the adapter component 1113 are more convenient, which is conducive to improving assembly efficiency.

[0150] In a specific embodiment, referring to Figure 4 and Fig.15As shown, the battery box 1110 includes a box body portion 1111, a structural beam 1112 and a transition component 1113, wherein the box body portion 1111 is formed with a containing space 11113, the box body portion 1111 includes a box body bottom wall 11115 and a box body side wall 11114 connected to the box body bottom wall 11115; the structural beam 1112 is arranged on the box body bottom wall 11115 and is located in the containing space 11113, the structural beam 1112 is extended along the wall surface of the box body bottom wall 11115 and forms an extension end 11121; the structural beam 1112 is a beam structure made of composite materials; the transition component 1113 is connected to the box body side wall 11115 114, the extension end 11121 is plugged into the adapter component 1113; the adapter component 1113 is formed with a receiving groove 11133, and the extension end 11121 is plugged into the receiving groove 11133; the battery box 1110 also includes a limiting structure 1114, the extension end 11121 is plugged into the adapter component 1113 along the first direction X, and the limiting structure 1114 is respectively connected to the extension end 11121 and the adapter component 1113 to limit the extension end 11121 from moving relative to the adapter component 1113 along the first direction X; the adapter component 1113 includes a support body 11132 and a plurality of adapter sheets 11131, and the plurality of adapters The sheet 11131 is arranged around a preset axis and connected to the support body 11132 to form a receiving groove 11133 together; the preset axis is parallel to the bottom wall 11115 of the box body, and the support body 11132 is connected to the side wall 11114 of the box body; the structural beam 1112 has a beam top wall 11122 and two first beam side walls 11123 connected to the beam top wall 11122, and the two first beam side walls 11123 are arranged opposite to each other, and at least three adapter sheets 11131 are provided, one adapter sheet 11131 is arranged opposite to the beam top wall 11122, and the remaining adapter sheets 11131 are arranged corresponding to each first beam side wall 11123; the structural beam 1112 also has two oppositely arranged second beam side walls 11124, the second beam side walls are connected to the first beam side walls through a connecting portion, the first beam side wall 11123 is parallel to the second beam side wall 11124, and the first beam side wall 11123 and the second beam side wall 11124 are arranged at intervals in a direction perpendicular to the bottom wall 11115 of the box body, and five adapter plates 11131 are provided, and the remaining two adapter plates 11131 are respectively arranged opposite to the two second beam side walls 11124; the battery box body 1110 also includes a connecting structure 1115, and the connecting structure 1115 is connected between the adapter component 1113 and the box body side wall 11114.

[0151] Based on the above-mentioned battery box 1110, the present application further proposes a battery 1100, referring to Figure 2 As shown, the battery 1100 includes a battery cell 1120 and a battery case 1110 in any of the above embodiments, and the battery cell 1120 is accommodated in an accommodating space 11113 .

[0152] Specifically, the battery cell 1120 includes an electrode assembly, which is one of the core components of the battery 1100. The electrode assembly can convert chemical energy into electrical energy. The basic structure of the electrode assembly includes a positive electrode sheet, a negative electrode sheet, an electrolyte, a separator and a pole ear. The pole ear includes a positive pole ear connected to the positive electrode sheet and a negative electrode connected to the negative electrode sheet. The positive electrode sheet and the negative electrode sheet are separated by an electrolyte and a separator. During the discharge process, the positive electrode sheet and the negative electrode sheet undergo an oxidation-reduction reaction to generate current. The types of electrode assemblies include lithium-ion electrode assemblies (Li-ion), nickel-metal hydride electrode assemblies (NiMH), nickel-cadmium electrode assemblies (NiCd), etc. Lithium-ion electrode assemblies have the characteristics of high energy density and light weight.

[0153] The battery 1100 may include one battery cell 1120, or may include multiple battery cells 1120. When multiple battery cells 1120 are provided in the battery 1100, the multiple battery cells 1120 may be arranged according to a preset rule. The multiple battery cells 1120 may be arranged in a row of multiple columns or multiple rows of multiple columns. The multiple battery cells 1120 may be connected in series, in parallel, or in series-parallel hybrid.

[0154] It is understandable that in this example, only the battery 1100 including the above-mentioned battery box 1110 is explained, and the battery 1100 may also include other functional components, which will not be repeated.

[0155] The example of battery 1100 in the present application is based on the example of battery case 1110 described above. The example of battery 1100 includes all the technical effects of the example of battery case 1110 described above, which will not be described in detail.

[0156] In some examples, reference Figure 1 As shown, an example of an electrical device is disclosed, and the electrical device includes the battery box 1110 in any of the above examples, or the battery 1100 in any of the above examples.

[0157] The electrical devices in this example include, but are not limited to, mobile phones, portable devices, laptop computers, electric vehicles, electric vehicles, ships, spacecraft, electric toys, electric tools, etc. The battery 1100 in any of the above examples can be installed separately in the electrical device.

[0158] The examples of electrical devices in the present application are based on the examples of the above-mentioned battery case 1110 or battery 1100. The examples of electrical devices include all the technical effects of the examples of the above-mentioned battery case 1110 or battery 1100, which will not be repeated here.

[0159] The above are only preferred embodiments of the present application, and only specifically describe the technical principles of the present application. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application, and other specific implementation methods of the present application that can be associated with the technicians in this field without creative work, should be included in the scope of protection of the present application.

Claims

1. A battery box, characterized in that: include: A box body portion, formed with an accommodating space, the box body portion comprising a box body bottom wall and a box body side wall connected to the box body bottom wall; A structural beam, arranged on the bottom wall of the box body and located in the accommodating space, wherein the structural beam is extended along the wall surface of the bottom wall of the box body and forms an extended end; The adapter component is connected to the side wall of the box body, and the extension end is plugged into and matched with the adapter component.

2. The battery box according to claim 1, characterized in that: The structural beam is a structural beam made of composite material.

3. The battery case according to claim 1, characterized in that: The adapter component is formed with a receiving groove, and the extending end is inserted into the receiving groove.

4. The battery case according to any one of claims 1 to 3, characterized in that: The battery box also includes a limiting structure, the extension end is plugged into the adapter component along a first direction, and the limiting structure is respectively connected to the extension end and the adapter component to limit the extension end from moving relative to the adapter component along the first direction.

5. The battery case according to claim 3, characterized in that: The adapter component includes a support body and a plurality of adapter plates, and the plurality of adapter plates are arranged around a preset axis and connected to the support body to jointly surround a receiving groove; the preset axis is parallel to the bottom wall of the box body, and the support body is connected to the side wall of the box body.

6. The battery case according to claim 5, characterized in that: The structural beam has a beam top wall and two first beam side walls connected to the beam top wall, the two first beam side walls are arranged opposite to each other, and at least three adapter plates are provided, one of which is arranged opposite to the beam top wall, and the remaining adapter plates are arranged corresponding to each of the first beam side walls.

7. The battery case according to claim 6, characterized in that: The structural beam also has two oppositely arranged second beam side walls, the second beam side walls are connected to the first beam side walls through a connecting portion, the first beam side walls are parallel to the second beam side walls, and the first beam side walls and the second beam side walls are arranged at intervals in a direction perpendicular to the bottom wall of the box body, and five adapter plates are provided, and the remaining two adapter plates are respectively arranged opposite to the two second beam side walls.

8. The battery case according to claim 7, characterized in that: The structural beam includes a first beam body and a second beam body both extending along a second direction, the second direction is parallel to the bottom wall of the box body, the first beam body is arranged on the bottom wall of the box body, and the first beam body has two first beam side walls located on both sides of the second direction; the second beam body is connected to the side of the first beam body facing away from the bottom wall of the box body, the second beam body has the beam top wall and two second beam side walls, the beam top wall is arranged away from the bottom wall of the box body, and along the second direction, the two second beam side walls are respectively located on both sides of the beam top wall.

9. The battery case according to any one of claims 1 to 3, characterized in that: The battery box also includes a connecting structure, which is connected between the adapter component and the side wall of the box.

10. The battery case according to claim 4, characterized in that: The limiting structure includes a locking pin, a first locking hole is formed at the extending end, a second locking hole is formed on the adapter component corresponding to the first locking hole, and the locking pin is inserted into the first locking hole and the second locking hole.

11. The battery case according to claim 4, characterized in that: The limiting structure includes a locking stud, a first screw hole is formed at the extending end, a second screw hole is formed on the adapter component corresponding to the first screw hole, and the locking stud is threadedly connected to the first screw hole and the second screw hole respectively.

12. The battery case according to claim 4, characterized in that: The limiting structure includes an adhesive body, a gap space is formed between the transition component and the extension end, and the adhesive body is filled in the gap space.

13. The battery case according to claim 12, characterized in that: A glue injection hole is formed on the transition component, and the glue injection hole is communicated with the gap space.

14. The battery case according to claim 9, characterized in that: The connection structure includes a connection stud, a first threaded hole is provided on the side wall of the box body, a second threaded hole is provided on the adapter component corresponding to the first threaded hole, and the connection stud is threadedly connected to the first threaded hole and the second threaded hole respectively.

15. The battery case according to claim 9, characterized in that: The connection structure comprises an adhesive layer, and the adhesive layer is connected between the adapter component and the side wall of the box body.

16. A battery, characterized in that: The battery comprises a battery cell and a battery case as claimed in any one of claims 1 to 15, and the battery cell is accommodated in the accommodation space.

17. An electrical device, characterized in that: Comprising a battery case as described in any one of claims 1 to 15, or, comprising a battery as described in claim 16.

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