Battery device and electric device

Abstract

The utility model belongs to the technical field of batteries, and provides a battery device and a power utilization device. The battery device comprises a box body and single batteries mounted in the box body; the box body comprises a box main body made of a non-metal material and a frame beam connected with the box main body; the box main body comprises a main body plate, a side wall plate and a first extension part, the side wall plate protrudes and extends towards one side of the main body plate from the edge of the main body plate in the height direction of the box body, the frame beam is bonded and connected with the outer surface of the side wall plate, and the first extension part extends outwards from the outer surface of the side wall plate; the frame beam is provided with a first containing space for containing the first extending part in a matched mode. The first extending part is arranged on the outer surface of the side wall plate, the first containing space is formed in the frame beam and used for containing the first extending part, so that the connecting area of the frame beam and the first extending part is increased, the bonding stability of the outer surface of the side wall plate and the frame beam is improved, and the first extending part can be well supported through the frame beam; the stability of the whole structure of the box body is improved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and more specifically, relates to a battery device and an electrical device. Background Art

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0003] To reduce the weight of battery devices, some battery devices often use non-metallic materials for parts of the housing, such as composite materials for the lower housing. However, due to material limitations, the side panels and frame beams of such housings are often connected by gluing, resulting in relatively weak joints. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a battery device and an electrical device to improve the problem of relatively weak connection strength between the side wall panels and the frame beams of the non-metallic box in the related art.

[0005] In a first aspect, an embodiment of the present application provides a battery device, comprising a box body and a battery cell installed in the box body; the box body comprises a box body made of a non-metallic material and a frame beam connected to the box body;

[0006] The box body includes a main plate, a side wall plate and a first extension portion. The battery cell is supported on the main plate. The side wall plate is extended from the edge of the main plate along the height direction of the box body toward one side of the main plate. The frame beam is bonded to the outer surface of the side wall plate. The first extension portion is extended outward from the outer surface of the side wall plate. The frame beam is provided with a first receiving space adapted to accommodate the first extension portion.

[0007] In the technical solution of the embodiment of the present application, a first extension portion is provided on the outer surface of the side wall plate, and a first receiving space is provided on the frame beam to accommodate the first extension portion. This can increase the connection area between the frame beam and the first extension portion, improve the stability of the bonding between the outer surface of the side wall plate and the frame beam, thereby improving the connection strength between the frame beam and the box body, and the frame beam can be used to well support the first extension portion, thereby well supporting the box body and improving the stability of the overall structure of the box.

[0008] In some embodiments, the box body includes a second extension portion, the second extension portion extending from a side of the first extension portion away from the side wall plate toward a side away from the main body plate, and an inner surface of the second extension portion cooperates with the first extension portion to form an accommodating space;

[0009] The frame beam includes an outer beam and an adapter beam. The adapter beam is placed in the accommodating space. The side wall plate is close to the side of the main plate on the first extension part, the first extension part and the second extension part cooperate to form a step part. The outer beam has a step surface adapted to the outer surface of the step part, and the step surface is bonded to the step part.

[0010] Through the above technical solution, a accommodating space can be formed between the adapter beam and the outer beam to accommodate the first extension portion; in addition, the setting of the adapter beam can improve the strength of the position between the second extension portion and the side wall plate; the bonding design of the step surface and the step portion of the outer beam can increase the bonding area between the outer beam and the box body, thereby improving the connection strength between the outer beam and the box body.

[0011] In some embodiments, the box body includes a folding portion, which extends from a side of the second extension portion away from the first extension portion toward a side away from the main plate, and the outer beam is provided with a supporting portion adapted to be connected to the folding portion.

[0012] Through the above technical solution, the setting of the folding part can facilitate the connection between the box body and the box cover, and can improve the strength of the box body, and the outer beam is correspondingly provided with a support part to connect with the folding part, which can increase the connection area between the outer beam and the box body, thereby improving the connection strength between the frame beam and the box body.

[0013] In some embodiments, the second extension is riveted to the outer side beam.

[0014] Through the above technical solution, the connection strength and stability between the second extension portion and the outer beam can be improved.

[0015] In some embodiments, the adapter beam is bonded to the inner surface of the accommodating space.

[0016] Through the above technical solution, the assembly and fixation of the adapter beam can be facilitated, thereby improving the connection strength between the frame beam and the box body, and improving the overall structural strength of the box.

[0017] In some embodiments, the first extension portion is located in a middle area of ​​the side wall plate along the height direction of the box body.

[0018] Through the above technical solution, the first extension part is set in the middle area to enhance the structural strength of the side wall plate, so that the first extension part can better support the side wall plate, and the height of the side wall plate can also be set higher, so that the space formed in the box body can have a larger depth to accommodate the battery cell, which is convenient for the assembly of the battery cell. The side wall plate can also better support the side of the battery cell and improve the anti-expansion performance of the box.

[0019] In some embodiments, the first extension portion is located in the middle area of ​​the side wall plate along the height direction of the box body, and a folding plate is provided on the side of the side wall plate extending outward away from the main body plate, and the side of the frame beam facing away from the main body plate is adaptively connected to the folding plate.

[0020] Through the above technical solution, the setting of the folding plate can increase the connection area with the frame beam and improve the connection strength between the box body and the frame beam. In addition, when the box body includes a cover, it can also facilitate the connection between the box body and the cover of the box body.

[0021] In some embodiments, the box body includes a third extension portion, which extends outward from the outer surface of the side wall plate. The third extension portion is located on the side of the first extension portion close to the main plate, and a second receiving space adapted to accommodate the third extension portion is provided on the frame beam.

[0022] Through the above technical solution, the setting of the third extension part can not only improve the structural strength of the part where the side wall panel is located and better support the side wall panel, but also set a second receiving space on the frame beam, which can further increase the connection area between the box body and the frame beam and enhance the connection strength between the frame beam and the box body.

[0023] In some embodiments, a plurality of third extension portions are provided, and the plurality of third extension portions are spaced apart along the height direction of the box body, and a plurality of second receiving spaces are correspondingly provided on the frame beam to accommodate each third extension portion.

[0024] Through the above technical solution, multiple third extension parts are set, and multiple second receiving spaces are correspondingly set on the frame beam to increase the connection area between the box body and the frame beam, and enhance the connection strength between the frame beam and the box body.

[0025] In some embodiments, a receiving portion is provided on the frame beam extending toward the main body plate, and the receiving portion is connected to a side of the main body plate facing away from the side wall plate.

[0026] Through the above technical solution, a receiving portion is provided and connected to the main plate, thereby increasing the connection area between the frame beam and the box body, improving the connection strength between the frame beam and the box body, and better supporting the main plate.

[0027] In some embodiments, a receiving groove is concavely provided on the side of the main body plate corresponding to the position of the receiving portion and facing the side wall plate, and the receiving portion is placed in the receiving groove.

[0028] Through the above technical solution, the receiving groove is provided on the main body plate to accommodate the receiving portion, which can facilitate the installation and fixation of the receiving portion. In addition, the receiving groove is provided on the main body plate, which can also improve the structural strength of the main body plate.

[0029] In some embodiments, the box body is an integrally formed structure.

[0030] The above technical solution can facilitate the processing and manufacturing of the box body, and can improve the overall strength of the box body, thereby improving the structural strength of the box body.

[0031] In some embodiments, the box body is a basin-shaped structure.

[0032] Through the above technical solution, the box body is provided with a basin-shaped structure, which can be easily made into a box body for accommodating battery cells, reduces the number of parts for making the box body, and facilitates the assembly of the box body.

[0033] In some embodiments, the box body is a composite box.

[0034] Through the above technical solution, the box body uses a composite box with light weight, high structural strength and good durability.

[0035] In a second aspect, an embodiment of the present application provides an electrical device, comprising a battery device as described in the above embodiment, and the battery device is used to store or provide electrical energy.

[0036] 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

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments or exemplary technical descriptions. 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.

[0038] Figure 1 A schematic structural diagram of a vehicle according to some embodiments of the present application;

[0039] Figure 2 Schematic diagram of the exploded structure of a battery device according to some embodiments of the present application;

[0040] Figure 3 This is a partial structural diagram of a box in some embodiments of the present application;

[0041] Figure 4 for Figure 3 A schematic diagram of a top view of a portion of the structure of the middle box;

[0042] Figure 5 For the Figure 4 Schematic diagram of the cross-sectional structure along line AA;

[0043] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part B;

[0044] Figure 7 This is a schematic diagram of the structure of the connection between the frame beam and the box body in some embodiments of this application Figure 1 ;

[0045] Figure 8 This is a schematic diagram of the structure of the connection between the frame beam and the box body in some embodiments of this application Figure 2 ;

[0046] Figure 9 This is a schematic diagram of the structure of the connection between the frame beam and the box body in some embodiments of this application Figure 3 ;

[0047] Figure 10 This is a schematic diagram of the structure of the connection between the frame beam and the box body in some embodiments of this application Figure 4 ;

[0048] Figure 11 This is a schematic diagram of the structure of the connection between the frame beam and the box body in some embodiments of this application Figure 5 .

[0049] Among them, the main marks of the drawings in the figure are:

[0050] 11. Vehicle; 111. Controller; 112. Motor;

[0051] 200, battery device; 20, housing; 201, first housing; 202, second housing;

[0052] 21. Box body; 211. Main body plate; 2111. Receiving groove; 212. Side wall plate; 2120. Accommodating space; 213. First extension portion; 214. Second extension portion; 215. Folding portion; 216. Third extension portion; 217. Folding plate; 22. Frame beam; 2201. First receiving space; 2202. Second receiving space; 2203. Weight reduction cavity; 221. Outer beam; 2211. Support portion; 222. Adaptive beam; 223. Attachment portion; 23. Guard plate; 24. Expansion beam; 25. Reinforcement beam; 27. Thermal management component; 271. Channel; 281. Rivet;

[0053] 300, battery cell;

[0054] X, first length direction; Y, first width direction; Z, height direction. DETAILED DESCRIPTION

[0055] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0056] 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.

[0057] In the description of the embodiments of this application, the technical terms "first," "second," etc., are used solely to distinguish between different objects and should not be understood to indicate or imply relative importance, or to implicitly specify the quantity, specific order, or primary-secondary relationship of the technical features indicated. Therefore, a feature designated "first" or "second" may explicitly or implicitly include one or more of such features.

[0058] 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 in any suitable manner.

[0059] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0060] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0061] 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.

[0062] In the description of the embodiments of this application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more (including two groups), and "multiple sheets" refers to two or more (including two sheets). "Several" means one or more, unless otherwise specifically defined.

[0063] 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. They 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. Therefore, they should not be understood as limiting the embodiments of the present application.

[0064] 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; and 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.

[0065] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0066] In the description of the embodiments of this application, unless otherwise specified or limited, the technical term "adjacent" refers to proximity in position. For example, if there are three components A1, A2, and B, and the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1, that is, A2 is adjacent to B, or B is adjacent to A2. For another example, when there are multiple components C, the multiple components C are C1, C2, ..., C N , when one of the C components, such as C2, is closer to the B component than other C components, then B is adjacent to C2, or it can be said that C2 is adjacent to B.

[0067] As battery applications expand, the demand for lightweight batteries is increasing. This is especially true for mobile devices, such as electric vehicles, ships, and aircraft, which require lightweight batteries to reduce their load. Lightweight batteries not only improve the device's battery life but also reduce energy consumption, further aligning with environmental trends.

[0068] In order to reduce the weight of the battery device and achieve lightweight battery devices, some current battery devices use lightweight non-metallic materials such as plastic, carbon fiber, glass fiber and other materials to make the battery device box. For example, the box body is made of non-metal to make the main part of the box body, such as a basin structure, to serve as the lower box body or upper box body, and a frame beam made of metal materials such as steel and aluminum alloy is set at the edge of the box body to increase the structural strength of the box body and facilitate the installation and use of the box body. However, due to the limitation of the material of the box body, it is often connected to the frame beam by gluing, and the side wall panels of the box body are mostly tight panels extending in the height direction. They are bonded to the frame beam, and their connection strength is relatively weak.

[0069] Based on the above considerations, in order to improve the problem of relatively weak connection strength between the side wall panel and the frame beam of the composite box, an embodiment of the present application provides a battery device, which provides a first extension portion on the outer surface of the side wall panel and a first receiving space on the frame beam to accommodate the first extension portion. When the frame beam is bonded to the side wall panel, the first extension portion is placed in the first receiving space, and the first extension portion can be well supported by the frame beam, thereby well supporting the box body, and the stability of the bonding between the outer surface of the side wall panel and the frame beam can be improved, thereby improving the connection strength between the frame beam and the box body, thereby improving the stability of the overall structure of the box.

[0070] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0071] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0072] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0073] For the convenience of description, an electric device is provided in accordance with an embodiment of the present application, and the electric device is described by taking a vehicle as an example.

[0074] Please refer to Figure 1 , Figure 1A schematic structural diagram of a vehicle 11 provided for some embodiments of the present application. The vehicle 11 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 200 is provided inside the vehicle 11. The battery device 200 may be provided at the bottom, head or tail of the vehicle 11. The battery device 200 may be used to power the vehicle 11. For example, the battery device 200 may serve as an operating power source for the vehicle 11. The vehicle 11 may further include a controller 111 and a motor 112. The controller 111 is used to control the battery device 200 to power the motor 112, for example, for starting, navigating and operating power requirements of the vehicle 11 during driving.

[0075] In some embodiments, the battery device 200 can serve not only as an operating power source for the vehicle 11 , but also as a driving power source for the vehicle 11 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 11 .

[0076] Please refer to Figure 2 In one embodiment of the present application, a battery device 200 is provided. The battery device 200 may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 300, which are connected in series, parallel, or in parallel via a busbar.

[0077] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 300 .

[0078] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 300 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 300 with a cable tie.

[0079] In some embodiments, the battery device 200 may be a battery pack, which includes a case 20 and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case 20 .

[0080] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 20 by fixing the battery module in the box body 20 .

[0081] As an example, the battery cell assembly may also be housed in the case 20 by directly fixing the plurality of battery cells 300 to the case 20 .

[0082] In some embodiments, the housing 20 may include a first housing 201 and a second housing 202. The first housing 201 and the second housing 202 are snap-fitted together to form a closed space inside the housing 20 to accommodate the battery cells 300. The closed space here refers to covering or closing, which may be sealed or unsealed. The second housing 202 may be a hollow structure with one end open, and the first housing 201 may be a plate-like structure. The first housing 201 covers the open side of the second housing 202. The first housing 201 may be the top cover or bottom plate of the housing 20. The first housing 201 may be a hollow structure with one end open, and the second housing 202 may be a plate-like structure. The second housing 202 covers the open side of the first housing 201. The second housing 202 may be the top cover or bottom plate of the housing 20. The first housing 201 and the second housing 202 may also be hollow structures with one side open, and the open side of the first housing 201 covers the open side of the second housing 202.

[0083] In some embodiments, the housing 20 may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to opposite sides of the frame, forming an enclosed space within the housing 20 to accommodate the battery cells 300. The frame refers to the portion of the structure that forms the peripheral sidewalls of the housing 20, the top cover refers to the plate-like structure that forms the top of the housing 20, and the bottom plate refers to the plate-like structure that forms the bottom of the housing 20.

[0084] In some embodiments, the box 20 can be used as a part of the chassis structure of the vehicle. For example, part of the box 20 can become at least a part of the floor of the vehicle, or part of the box 20 can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0085] See also Figure 2 The box body 20 has a length direction, a width direction and a height direction, such as Figure 2 The first longitudinal direction X is the longitudinal direction of the box body 20 , the first width direction Y is the width direction of the box body 20 , and the height direction Z is the height direction of the box body 20 .

[0086] See also Figures 3 to 11According to some embodiments of the present application, the embodiments of the present application provide a battery device 200, including a box body 20 and a battery cell 300 installed in the box body 20; the box body 20 includes a box body 21 made of a non-metallic material and a frame beam 22 connected to the box body 21, the box body 21 includes a main plate 211, a side wall plate 212 and a first extension portion 213, the battery cell 300 is supported on the main plate 211, the side wall plate 212 is extended from the edge of the main plate 211 along the height direction Z of the box body 20 toward one side of the main plate 211, the frame beam 22 is bonded to the outer surface of the side wall plate 212, the first extension portion 213 is extended outward from the outer surface of the side wall plate 212, and a first receiving space 2201 adapted to accommodate the first extension portion 213 is provided on the frame beam 22.

[0087] The housing 20 is a container structure for housing the battery cells 300 .

[0088] The battery cell 300 is the smallest unit in the battery device 200 that stores and releases electrical energy.

[0089] The box body 21 is made of non-metallic materials and forms part of the structure of the box body 20. Non-metallic materials can be made of plastics, composite materials, etc. Made of composite materials, the box body 21 is lightweight and corrosion-resistant, effectively improving the structural safety and durability of the box body 20. Composite materials are materials composed of two or more different materials. Composite materials are often formed by combining resin and reinforcing materials. Resin materials, such as epoxy resin, polyester resin, or vinyl ester resin, typically serve as the matrix material to enhance adhesion and protection. Reinforcing materials can be fiber materials, granular materials, or sheet materials to enhance strength and rigidity. Fiber materials can include carbon fiber, glass fiber, or aramid fiber. Granular materials can include materials such as silicon carbide granules. Sheet materials can include materials such as mica sheets. Carbon fiber composites, glass fiber composites, or aramid fiber composites are generally referred to as fiber composites. They are typically made by coating fibers with resin, woven into cloth or strips, and then hot-pressed into corresponding structural components. Using composite materials to make the box body 21 is lightweight and corrosion-resistant. The box body 21 is made of fiber composite material, which is light in weight, high in structural strength and strong in corrosion resistance.

[0090] The frame beam 22 refers to a beam-column structure located at the outer edge of the box body 20 and serving as a part of the frame of the box body 20. The provision of the frame beam 22 can enhance the structural strength of the edge of the box body 20 and enhance the deformation resistance of the edge of the box body 20. As an example, a frame beam 22 can be provided on one side of the box body 20. As an example, frame beams 22 can also be provided on opposite sides of the box body 20. As an example, frame beams 22 can also be provided on each side of the box body 20. As an example, frame beams 22 can also be provided on several adjacent sides of the box body 20. The frame beam 22 can be made of metal materials such as steel and aluminum alloy. Of course, in some embodiments, the frame beam 22 can also be made of composite materials such as carbon fiber and glass fiber to further reduce weight and enhance strength.

[0091] The sidewall plate 212 is a portion of the box body 21 that is connected to the edge of the main plate 211 and protrudes from the edge of the main plate 211 toward the side of the box body 20 where the battery cells 300 are located. The sidewall plate 212 can serve as part of the side wall structure of the box body 20.

[0092] In some embodiments, the main body panel 211 and the side wall panel 212 can be integrally formed so that the main body panel 211 and the side wall panel 212 are firmly connected and easy to manufacture. In some embodiments, the main body panel 211 and the side wall panel 212 can be manufactured separately and then fixedly connected by bonding, welding, or fasteners.

[0093] The outer surface of the side wall plate 212 refers to the surface of the side wall plate 212 facing away from the inner space of the box body 20 .

[0094] The frame beam 22 and the outer surface of the side wall plate 212 are bonded together, which means that the frame beam 22 and the outer surface of the side wall plate 212 are bonded together by adhesives such as double-sided tape, structural adhesive, and curing adhesive, so that the frame beam 22 and the side wall plate 212 are fixedly connected.

[0095] The first extension portion 213 is a structure on the outer surface of the side wall plate 212 that extends toward the side away from the main body plate 211. The first extension portion 213 is provided on the outer surface of the side wall plate 212 to stabilize the side wall plate 212 and increase the structural strength. For example, please refer to Figure 6 , the first extension portion 213 may be a plate-like structure. As an example, see Figure 10 The first extension portion 213 may also be a groove-shaped structure, for example, the first extension portion 213 may be a structure formed by partially recessing the side wall plate 212. The first extension portion 213 is provided in a groove-shaped structure, which can be easily processed and manufactured.

[0096] In some embodiments, the first extension 213 and the side wall panel 212 can be integrally formed to securely connect the first extension 213 and the side wall panel 212 and facilitate fabrication. In some embodiments, the first extension 213 and the side wall panel 212 can be fabricated separately and then fixedly connected by bonding, welding, or fasteners.

[0097] The battery cell 300 is supported on the main plate 211, which means that the battery cell 300 can be directly mounted on the main plate 211, and the battery cell 300 is supported by the main plate 211; or the battery cell 300 is indirectly mounted on the main plate 211, and the battery cell 300 is indirectly supported by the main plate 211, such as a cold plate or other components can be set between the main plate 211 and the battery cell 300.

[0098] The first receiving space 2201 is a space provided on the frame beam 22. During assembly, the first extension portion 213 can be placed in the first receiving space 2201. By providing the first receiving space 2201 to accommodate the first extension portion 213, the connection area between the frame beam 22 and the box body 21 can be increased, thereby improving the connection strength between the frame beam 22 and the box body 21.

[0099] Through the above technical solution, a first extension portion 213 is set on the outer surface of the side wall plate 212, and a first receiving space 2201 is set on the frame beam 22 to accommodate the first extension portion 213. This can increase the connection area between the frame beam 22 and the first extension portion 213, improve the stability of the bonding between the outer surface of the side wall plate 212 and the frame beam 22, thereby improving the connection strength between the frame beam 22 and the box body 21, and the frame beam 22 can be used to well support the first extension portion 213, thereby well supporting the box body 21, and improving the stability of the overall structure of the box body 20.

[0100] In some embodiments, when the side of the box 20 is provided with a frame beam 22, the frame beam 22 can also serve as a mounting beam for the box 20. The mounting beam refers to a beam structure used to connect an external device using the battery device 200 to support the battery device 200 on the device.

[0101] In some embodiments, see Figure 6 and Figure 7The box body 21 includes a second extension portion 214, which extends from the side of the first extension portion 213 away from the side wall plate 212 toward the side away from the main plate 211. The inner surface of the second extension portion 214 cooperates with the first extension portion 213 to form an accommodating space 2120; the frame beam 22 includes an outer beam 221 and an adapter beam 222, and the adapter beam 222 is placed in the accommodating space 2120. The side wall plate 212 is on the side of the first extension portion 213 close to the main plate 211, the first extension portion 213 and the second extension portion 214 cooperate to form a step portion, and the outer beam 221 has a step surface adapted to the outer surface of the step portion, and the step surface is bonded to the step portion.

[0102] The second extension portion 214 is a plate-like component extending from the first extension portion 213 away from the main plate 211. The second extension portion 214 extends from the side of the first extension portion 213 away from the sidewall plate 212 toward the side away from the main plate 211. This means that the second extension portion 214 is located on the side of the first extension portion 213 away from the sidewall plate 212 and extends from the first extension portion 213 away from the main plate 211. The second extension portion 214 on the first extension portion 213 stabilizes the first extension portion 213, increases structural strength, and forms a stepped structure.

[0103] In some embodiments, the first extension portion 213 and the second extension portion 214 can be integrally formed to securely connect the first extension portion 213 and the second extension portion 214 and facilitate fabrication. In some embodiments, the first extension portion 213 and the second extension portion 214 can be fabricated separately and then fixedly connected by bonding, welding, or fasteners.

[0104] The inner surface of the second extending portion 214 refers to the surface of the second extending portion 214 on a side close to the sidewall plate 212 .

[0105] The inner surface of the second extension portion 214 cooperates with the first extension portion 213 to form an accommodating space 2120, which means that the second extension portion 214 can be combined with the first extension portion 213 to form a stepped structure, so that the inner surface of the second extension portion 214 and the side of the first extension portion 213 facing away from the main plate 211 can form an accommodating space 2120.

[0106] The outer beam 221 refers to the portion of the frame beam 22 located on the outer surface of the side wall plate 212 and the outer surface of the second extension 214. The outer surface of the second extension 214 refers to the surface of the second extension 214 opposite to the inner surface of the second extension 214.

[0107] The adapting beam 222 refers to a portion of the beam-column structure in the frame beam 22 that adapts to the accommodating space 2120 so as to be installed in the accommodating space 2120 .

[0108] The frame beam 22 includes an outer beam 221 and an adapting beam 222. That is, the outer beam 221 and the adapting beam 222 are combined to form the frame beam 22. A first receiving space 2201 is formed between the outer beam 221 and the adapting beam 222.

[0109] The side wall plate 212 at the side of the first extension portion 213 close to the main plate 211, the first extension portion 213 and the second extension portion 214 cooperate to form a stepped portion, that is, the partial structure of the side wall plate 212 at the side of the first extension portion 213 close to the main plate 211, the first extension portion 213 and the second extension portion 214 are combined to form a stepped structure.

[0110] The stepped surface refers to a surface provided on the outer beam 221 , and is a surface of the outer beam 221 on a side close to the box body 21 .

[0111] The outer beam 221 has a stepped surface that matches the outer surface of the stepped portion, which means that the shape of the stepped surface on the outer beam 221 matches the shape of the stepped portion. The stepped surface is bonded to the stepped portion, which can increase the bonding area between the outer beam 221 and the box body 21 and increase the connection strength.

[0112] The step surface can be bonded to the stepped portion by adhesives such as double-sided adhesive, structural adhesive, and curing adhesive.

[0113] Through the above technical solution, a accommodating space 2120 can be formed between the adapter beam 222 and the outer beam 221 to accommodate the first extension portion 213; in addition, the setting of the adapter beam 222 can enhance the strength of the position between the second extension portion 214 and the side wall plate 212; the bonding design of the step surface and the step portion of the outer beam 221 can increase the bonding area between the outer beam 221 and the box body 21, thereby enhancing the connection strength between the outer beam 221 and the box body 21.

[0114] In some embodiments, the outer side beam 221 can be made of a profile structure for easy processing. In some embodiments, the outer side beam 221 can be made of a cast structure. In some embodiments, the outer side beam 221 can also be made of a rolled structure. In some embodiments, the outer side beam 221 can also be made of a forged structure.

[0115] In some embodiments, the adapter beam 222 can be made of a profile structure for easy processing. In some embodiments, the adapter beam 222 can be made of a cast structure. In some embodiments, the adapter beam 222 can also be made of a rolled structure. In some embodiments, the adapter beam 222 can also be made of a forged structure.

[0116] In some embodiments, see Figures 6 to 9 The box body 21 includes a folding portion 215, which extends from the side of the second extension portion 214 away from the first extension portion 213 toward the side away from the main plate 211, and the outer beam 221 is provided with a supporting portion 2211 adapted to be connected to the folding portion 215.

[0117] The folding portion 215 is a plate-like structure extending from the second extension portion 214 away from the side wall plate 212. The folding portion 215 is provided on the second extension portion 214 to stabilize the second extension portion 214, increase structural strength, and form a stepped structure.

[0118] In some embodiments, the folded portion 215 and the second extension portion 214 can be integrally formed to securely connect the folded portion 215 and the second extension portion 214 and facilitate fabrication. In some embodiments, the folded portion 215 and the second extension portion 214 can be fabricated separately and then securely connected by bonding, welding, or fasteners.

[0119] The support portion 2211 refers to a portion of the structure provided on the outer beam 221 that contacts the folded portion 215. Providing the support portion 2211 on the outer beam 221 so as to connect with the folded portion 215 can increase the connection area and improve the structural strength of the connection.

[0120] Through the above technical solution, the setting of the folding portion 215 can facilitate the connection between the box body 21 and the cover body of the box body 20, and can improve the strength of the box body 21, and the outer beam 221 is correspondingly provided with a support portion 2211 to be connected to the folding portion 215, which can increase the connection area between the outer beam 221 and the box body 21, thereby improving the connection strength between the frame beam 22 and the box body 21.

[0121] In some embodiments, the folding portion 215 can be bonded to the supporting portion 2211 by adhesives such as double-sided tape, structural adhesive, and curing adhesive, which facilitates connection.

[0122] In some embodiments, the folding portion 215 may also be connected to the supporting portion 2211 via fasteners such as bolts and rivets.

[0123] In some embodiments, see Figures 6 to 9 The second extension portion 214 is riveted to the outer side beam 221 .

[0124] The second extension portion 214 is riveted to the outer side beam 221 , which means that the second extension portion 214 is fixedly connected to the side wall of the outer side beam 221 adjacent to the second extension portion 214 through the rivet 281 .

[0125] Through the above technical solution, the connection strength and stability between the second extension part 214 and the outer beam 221 can be improved, the anti-vibration performance can be improved, and the risk of loose connection between the second extension part 214 and the outer beam 221 can be effectively reduced.

[0126] In some embodiments, the second extension portion 214 and the outer side beam 221 may be connected using fasteners such as bolts and locks.

[0127] In some embodiments, see Figure 6 and Figure 7 The adapter beam 222 is bonded to the inner surface of the accommodating space 2120 .

[0128] The adaptor beam 222 is bonded to the inner surface of the accommodating space 2120 , which means that the adaptor beam 222 is fixedly connected to the inner surface of the accommodating space 2120 by adhesives such as double-sided tape, structural adhesive, and curing adhesive.

[0129] Through the above technical solution, the assembly and fixation of the adapter beam 222 can be facilitated, thereby improving the connection strength between the frame beam 22 and the box body 21, and improving the overall structural strength of the box body 20.

[0130] In some embodiments, the adapter beam 222 may be fixedly connected to the first extension portion 213 by fasteners.

[0131] In some embodiments, the adapter beam 222 may be fixedly connected to the second extension portion 214 by fasteners.

[0132] In some embodiments, see Figure 6 and Figure 8 The first extension portion 213 is located in the middle area of ​​the side wall plate 212 along the height direction Z of the box body 20.

[0133] The middle area of ​​the side wall plate 212 along the height direction Z refers to the partial area of ​​the side wall plate 212 excluding the two ends in the height direction Z, and also refers to the partial area between the two ends in the height direction Z of the side wall plate 212.

[0134] The first extension portion 213 is located in the middle area of ​​the side wall plate 212 along the height direction Z of the box body 20 , that is, part of the side wall plate 212 protrudes along the height direction Z from the side of the first extension portion 213 away from the main body plate 211 .

[0135] The first extension portion 213 is located in a middle area of ​​the side wall plate 212 along the height direction Z. The first extension portion 213 can better enhance the strength of the side wall plate 212 .

[0136] Through the above technical solution, the first extension portion 213 is set in the middle area to enhance the structural strength of the side wall plate 212, so that the first extension portion 213 can better support the side wall plate 212, and the height of the side wall plate 212 can also be set higher, so that the space formed in the box body 21 can have a larger depth to accommodate the battery cell 300, which is convenient for the assembly of the battery cell 300, and the side wall plate 212 can also better support the side of the battery cell 300, thereby improving the anti-expansion performance of the box body 20.

[0137] In some embodiments, when a second extension portion 214 is provided on the first extension portion 213, the first extension portion 213 is located in the middle area of ​​the side wall plate 212 along the height direction Z, then the portion of the side wall plate 212 at the first extension portion 213 away from the main plate 211 can serve as a side wall of the accommodating space 2120 to better position the adaptation beam 222.

[0138] In some embodiments, see Figure 8 and Figure 9 The first extension portion 213 is located in the middle area of ​​the side wall plate 212 along the height direction Z of the box body 20. A folding plate 217 extends outward from the side of the side wall plate 212 away from the main plate 211, and the side of the frame beam 22 away from the main plate 211 is adaptively connected to the folding plate 217.

[0139] The hem plate 217 is a plate-like component structure extending from the side wall plate 212 in a direction away from the main body plate 211. The hem plate 217 is provided on the side wall plate 212 to stabilize the side wall plate 212, increase the structural strength, and form a stepped structure.

[0140] In some embodiments, the hem plate 217 and the side wall plate 212 can be integrally formed so that the hem plate 217 and the side wall plate 212 are firmly connected and easy to manufacture. In some embodiments, the hem plate 217 and the side wall plate 212 can be manufactured separately and then fixedly connected by bonding, welding, or fasteners.

[0141] The side of the frame beam 22 facing away from the main plate 211 refers to the side of the frame beam 22 facing away from the main plate 211 along the height direction Z.

[0142] The side of the frame beam 22 facing away from the main plate 211 is adaptively connected to the folding plate 217, which means that the side of the frame beam 22 facing away from the main plate 211 can be fixedly connected to the folding plate 217 by bonding, welding, or using fasteners.

[0143] Through the above technical solution, the setting of the folding plate 217 can increase the connection area with the frame beam 22, and improve the connection strength between the box body 21 and the frame beam 22. In addition, when the box body 20 includes a cover, the connection between the box body 21 and the cover of the box body 20 can also be facilitated.

[0144] In some embodiments, the side of the frame beam 22 facing away from the main body plate 211 is bonded to the folding plate 217 , which facilitates the connection and improves the bonding strength between the frame beam 22 and the box body 21 .

[0145] In some embodiments, see Figure 8 and Figure 9 The first extension portion 213 is located in the middle area of ​​the side wall plate 212 along the height direction Z of the box body 20. A folding plate 217 extends outward from the side of the side wall plate 212 away from the main plate 211. The side of the frame beam 22 away from the main plate 211 is adaptively connected to the folding plate 217. The frame beam 22 only needs to set a first receiving space 2201 on the side surface close to the side wall plate 212, which can simplify the structure.

[0146] In some embodiments, see Figure 9 and Figure 11 The box body 21 includes a third extension portion 216, which extends outward from the outer surface of the side wall plate 212. The third extension portion 216 is located on the side of the first extension portion 213 close to the main plate 211, and a second receiving space 2202 adapted to accommodate the third extension portion 216 is provided on the frame beam 22.

[0147] The third extension 216 is a structure extending from the outer surface of the side wall plate 212 toward the side away from the main body plate 211. The third extension 216 is provided on the outer surface of the side wall plate 212 to stabilize the side wall plate 212 and increase the structural strength. Figure 9 , the third extension portion 216 may be a plate-like structure. As an example, see Figure 11 The third extension portion 216 may also be a groove-shaped structure, for example, the third extension portion 216 may be a structure formed by partially recessing the side wall plate 212. The third extension portion 216 is provided in a groove-shaped structure, which can be easily processed and manufactured.

[0148] In some embodiments, the third extension 216 and the side wall panel 212 can be integrally formed to securely connect the third extension 216 and the side wall panel 212 and facilitate fabrication. In some embodiments, the third extension 216 and the side wall panel 212 can be fabricated separately and then fixedly connected by bonding, welding, or fasteners.

[0149] The third extension portion 216 is located on a side of the first extension portion 213 close to the main plate 211 . That is, the sidewall plate 212 protrudes from a side of the third extension portion 216 away from the main plate 211 .

[0150] The second receiving space 2202 is a space provided on the frame beam 22. During assembly, the third extension 216 can be placed in the second receiving space 2202. By providing the second receiving space 2202 to accommodate the third extension 216, the connection area between the frame beam 22 and the box body 21 can be increased, thereby improving the connection strength between the frame beam 22 and the box body 21.

[0151] Through the above technical solution, the setting of the third extension portion 216 can not only improve the structural strength of the part where the side wall plate 212 is located and better support the side wall plate 212, but also set the second receiving space 2202 on the frame beam 22, which can further increase the connection area between the box body 21 and the frame beam 22, and enhance the connection strength between the frame beam 22 and the box body 21.

[0152] In some embodiments, the third extension portion 216 can be provided as one to facilitate processing and manufacturing.

[0153] In some embodiments, a plurality of third extension portions 216 are provided, and the plurality of third extension portions 216 are spaced apart along the height direction Z of the box body 20 , and a plurality of second receiving spaces 2202 for accommodating each third extension portion 216 are correspondingly provided on the frame beam 22 .

[0154] A plurality refers to a quantity of two or more.

[0155] The frame beam 22 is provided with a plurality of second receiving spaces 2202 for accommodating the third extension portions 216 , which means that the second receiving spaces 2202 and the third extension portions 216 are provided in a one-to-one correspondence.

[0156] Through the above technical solution, multiple third extension parts 216 are set, and multiple second receiving spaces 2202 are correspondingly set on the frame beam 22 to increase the connection area between the box body 21 and the frame beam 22, and enhance the connection strength between the frame beam 22 and the box body 21.

[0157] In some embodiments, the third extension portion 216 can be fixedly connected to the inner surface of the second receiving space 2202 by adhesives such as double-sided tape, structural adhesive, and curing adhesive to connect and fix, thereby improving the connection strength between the frame beam 22 and the box body 21.

[0158] In some embodiments, see Figure 6 、 Figure 7 and Figure 9The frame beam 22 extends toward the main body plate 211 and is provided with a receiving portion 223 , which is connected to a surface of the main body plate 211 facing away from the side wall plate 212 .

[0159] The receiving portion 223 refers to a portion of the frame beam 22 that protrudes and extends toward one side of the main body plate 211 .

[0160] The side of the main plate 211 facing away from the side wall plate 212 refers to the side of the main plate 211 facing away from the space in the box body 20 for accommodating the battery cells 300 .

[0161] The receiving portion 223 is connected to the side of the main plate 211 away from the side wall plate 212, which means that the receiving portion 223 and the side of the main plate 211 away from the side wall plate 212 can be fixedly connected by bonding, welding, clamping, or using fasteners.

[0162] Through the above technical solution, a receiving portion 223 is provided and connected to the main body plate 211 , thereby increasing the connection area between the frame beam 22 and the box body 21 , increasing the connection strength between the frame beam 22 and the box body 21 , and better supporting the main body plate 211 .

[0163] In some embodiments, the receiving portion 223 can be bonded to the main plate 211 by adhesives such as double-sided tape, structural adhesive, and curing adhesive, which facilitates connection.

[0164] In some embodiments, the main body panels 211 may also be connected to the main body panels 211 by fasteners such as bolts and rivets.

[0165] In some embodiments, see Figure 6 、 Figure 7 and Figure 9 The main body plate 211 is provided with a receiving groove 2111 on the side of the side wall plate 212 corresponding to the position of the receiving portion 223 , and the receiving portion 223 is placed in the receiving groove 2111 .

[0166] The receiving groove 2111 refers to a groove structure provided on the main plate 211 .

[0167] The main body panel 211 is provided with a receiving groove 2111 on the side of the side wall panel 212 corresponding to the position of the receiving portion 223, which means that the receiving groove 2111 on the main body panel 211 is located at the position corresponding to the receiving portion 223, that is, the receiving groove 2111 is located on the side of the main body close to the frame beam 22, and is a groove structure formed by the main body being recessed toward the interior of the box body 20.

[0168] Through the above technical solution, the receiving groove 2111 is provided on the main plate 211 to accommodate the receiving portion 223, which can facilitate the installation and fixation of the receiving portion 223. In addition, the receiving groove 2111 is provided on the main plate 211, which can also improve the structural strength of the main plate 211.

[0169] In some embodiments, see Figures 3 to 6 , the box body 21 is an integrally formed structure.

[0170] The box body 21 is an integrally formed structure, that is, the components of the box body 21 are integrally formed, such as the main plate 211, the side wall plate 212 and the first extension portion 213 are integrally formed structures, so that the main plate 211, the side wall plate 212 and the first extension portion 213 are connected and fixed, thereby improving the connection strength and facilitating processing and manufacturing.

[0171] Through the above technical solution, the processing and manufacturing of the box body 21 can be facilitated, and the overall strength of the box body 21 can be improved, thereby improving the structural strength of the box body 20.

[0172] In some embodiments, the main body panel 211 and the side wall panel 212 may also be manufactured separately, and then the main body panel 211 and the side wall panel 212 are fixedly connected by bonding, welding, fasteners, or other structures.

[0173] In some embodiments, the first extension portion 213 and the side wall plate 212 may also be manufactured separately, and then the first extension portion 213 and the side wall plate 212 are fixedly connected by bonding, welding, fasteners, or other structures.

[0174] In some embodiments, the box body 21 is a basin-shaped structure.

[0175] The basin-shaped structure refers to a structure shaped like a basin. The box body 21 is configured in a basin-shaped structure, and the main body plate 211 of the box body 21 serves as the bottom of the basin-shaped structure, while the side wall plates 212 at the edge serve as the side walls of the basin-shaped structure.

[0176] Through the above technical solution, the box body 21 is provided with a basin-shaped structure, which can be easily manufactured into the box body 20 for accommodating the battery cells 300 , reducing the number of components for manufacturing the box body 20 and facilitating the assembly of the box body 20 .

[0177] In some embodiments, when the box body 20 includes a cover, the box body 21 can serve as the first box body 201 of the box body 20, and the cover can serve as the second box body 202 of the box body 20. Of course, the box body 21 can also serve as the second box body 202 of the box body 20, and correspondingly, the cover serves as the first box body 201 of the box body 20.

[0178] The cover refers to the shell structure on the side of the box body 20 opposite the main plate 211 of the box body 21. The cover and the box body 21 together form the main part of the box body 20 and enclose the internal space of the box body 20 to accommodate the battery cells 300. The cover can be made of metal materials such as steel and aluminum alloy, or composite materials such as carbon fiber and glass fiber. The cover can be set as a plate-like structure. Of course, the cover can also be set as a hollow structure with one end open. The specific design can be based on needs.

[0179] As an example, the cover may also be provided in the same structure as the box body 21 .

[0180] In some embodiments, when the box body 21 includes a folding portion 215 , the folding portion 215 can be connected to the cover to facilitate installation and fixation of the cover.

[0181] In some embodiments, when the box body 21 includes a folding plate 217, the folding plate 217 can be connected to the cover body to facilitate the installation and fixation of the cover body.

[0182] In some embodiments, when side walls are not provided on part of the edges of the main plate 211 of the box body 21 , a frame may be connected to the edges of the main plate 211 , thereby making the frame serve as the side wall structure of the box body 20 .

[0183] In some embodiments, side walls may be provided on one side or several sides of the main body plate 211 , while the other sides are connected to the beam-column structure, so that the whole structure forms a hollow structure with one end open.

[0184] In some embodiments, when the box body 21 includes a side wall plate 212 , the side wall plate 212 may serve as at least a partial structure of a side wall of the box body 20 .

[0185] In some embodiments, the box body 21 is a composite box.

[0186] Composite box refers to a box structure made of composite structure.

[0187] Through the above technical solution, the box body 21 uses a composite box, which is light in weight, high in structural strength and good in durability.

[0188] In some embodiments, the box body 21 is made of fiber composite material, which is light in weight, high in structural strength and strong in corrosion resistance.

[0189] In some embodiments, a weight-reducing cavity 2203 is provided in the frame beam 22. The weight-reducing cavity 2203 is a hollow structure provided on the frame beam 22 to reduce the weight of the frame beam 22. As an example, the weight-reducing cavity 2203 can be a hole structure provided on the frame beam 22 or a groove structure provided on the frame beam 22.

[0190] In some embodiments, the weight reduction cavity 2203 is extended along the length direction of the frame beam 22 .

[0191] The weight-reducing cavity 2203 is extended along the length direction of the frame beam 22 , and the volume of the weight-reducing cavity 2203 can be made larger to better reduce the weight of the frame beam 22 .

[0192] In some embodiments, the frame beam 22 may adopt a profile structure to facilitate processing and manufacturing, and also facilitate forming a weight-reducing cavity 2203 in the frame beam 22 .

[0193] Through the above technical solution, the weight of the frame beam 22 can be reduced, and thus the weight of the box body 20 can be reduced; and the weight-reducing cavity 2203 is extended along the length direction of the frame beam 22, which can facilitate the processing and production of the frame beam 22 and the weight-reducing cavity 2203 thereon.

[0194] In some embodiments, the frame beam 22 can be a cast structure, and the weight-reducing cavity 2203 can be machined thereon. In some embodiments, the frame beam 22 can also be made using a rolling structure to form the weight-reducing cavity 2203. In some embodiments, the frame beam 22 can also be made using a forging structure.

[0195] In some embodiments, see Figure 3 and Figure 4 The battery device 200 includes a thermal management component 27 , which is installed in the box 20 .

[0196] The thermal management component 27 is a component that can exchange heat with the external environment to control the temperature inside the box 20. The thermal management component 27 can be a semiconductor cooling device, a heating device, a cold plate, a heat pipe, or other structures.

[0197] Through the above technical solution, the thermal management component 27 is provided to effectively manage the thermal state of the battery cell 300 , so as to provide the battery cell 300 with a suitable operating temperature.

[0198] In some embodiments, see Figure 3 and Figure 6 The heat management component 27 is installed on a side of the main body plate 211 close to the side wall plate 212 , and a channel 271 for heat exchange fluid to circulate is provided in the heat management component 27 .

[0199] The thermal management component 27 is installed on the side of the main body plate 211 close to the side wall plate 212, that is, the thermal management component 27 is installed on the inner surface of the main body plate 211, and the inner surface of the main body plate 211 refers to the surface on the side of the main body plate 211 close to the space inside the box 20 for accommodating the battery cell 300.

[0200] Channel 271 refers to a cavity structure provided in thermal management component 27 for liquid circulation. Thermal management component 27 is provided with channel 271 for the circulation of heat exchange fluid. This fluid can circulate within channel 271, exchanging heat with the interior of housing 20 through the fluid, thereby improving heat exchange efficiency. For example, thermal management component 27 can be a coil, a cold plate with a built-in channel 271, or other structure.

[0201] Through the above technical solution, the thermal management component 27 can be supported by the main plate 211, and a channel 271 is set in the thermal management component 27 for the circulation of heat exchange liquid to achieve liquid heat exchange and improve heat exchange efficiency, so as to better provide a good working temperature environment for the battery cell 300.

[0202] In some embodiments, see Figure 2 and Figure 3 The box 20 includes a reinforcement beam 25, which is installed inside the box 20 to enhance structural stability. The reinforcement beam 25 refers to the beam-column structure installed inside the box 20 to increase structural strength. The reinforcement beam 25 can be made of a variety of materials, such as metal or composite materials, depending on actual needs.

[0203] In some embodiments, the length direction of the reinforcement beam 25 may be consistent with the first length direction X. In some embodiments, the length direction of the reinforcement beam 25 may be perpendicular to the first length direction X. In some embodiments, the length direction of the reinforcement beam 25 may also be inclined to the first length direction X.

[0204] In some embodiments, the housing 20 includes expansion beams 24 mounted on the inner surface of the main body plate 211. The expansion beams 24 are beam-column structures within the housing 20 that support the battery cells 300 and limit their expansion and deformation. The expansion beams 24 effectively suppress expansion and deformation of the battery cells 300 and enhance the structural strength of the housing 20.

[0205] In some embodiments, the length direction of the expansion beam 24 may be consistent with the first length direction X. In some embodiments, the length direction of the expansion beam 24 may be perpendicular to the first length direction X. In some embodiments, the length direction of the expansion beam 24 may also be inclined to the first length direction X.

[0206] In some embodiments, the housing 20 may be provided with one or more expansion beams 24. If multiple expansion beams 24 are provided, the multiple expansion beams 24 may be arranged in parallel. Of course, adjacent expansion beams 24 may also be arranged at an angle, and the specific arrangement can be customized as needed. "Multiple" refers to two or more expansion beams.

[0207] In some embodiments, see Figures 3 to 10The box body 20 includes a guard plate 23 , which is arranged on a side of the main body plate 211 away from the side wall plate 212 .

[0208] The guard plate 23 is a plate member that protects the side of the main body plate 211 away from the side wall plate 212. The guard plate 23 can be made of metal materials such as steel and aluminum alloy, or can be made of composite materials such as carbon fiber and glass fiber.

[0209] Through the above technical solution, the protective plate 23 is provided to provide good protection for the main plate 211 of the box body 20, reduce the external impact directly acting on the main plate 211, and affect the safety of the battery cell 300, and enhance the overall structural strength of the box body 20.

[0210] In some embodiments, the guard plate 23 is spaced apart from the main plate 211. When the box body 20 is subjected to external impact, the guard plate 23 can deform more to reduce the impact on the main plate 211, thereby effectively buffering the external force and ensuring the safety of the main plate 211 and the battery cell 300.

[0211] According to some embodiments of the present application, the embodiments of the present application provide a battery device 200, including a box body 20 and a battery cell 300 installed in the box body 20; the box body 20 includes a box body 21 integrally formed of non-metallic materials and a frame beam 22 connected to the box body 21, the box body 21 includes a main plate 211, a side wall plate 212, a first extension portion 213, a second extension portion 214 and a folding portion 215, the side wall plate 212 is extended from the edge of the main plate 211 along the height direction Z of the box body 20 toward one side of the main plate 211, the frame beam 22 is bonded to the outer surface of the side wall plate 212, the first extension portion 213 is extended outward from the outer surface of the side wall plate 212, and a first receiving space 2201 adapted to accommodate the first extension portion 213 is provided on the frame beam 22. The second extension portion 214 extends from the side of the first extension portion 213 away from the side wall plate 212 toward the side away from the main body plate 211. The inner surface of the second extension portion 214 cooperates with the first extension portion 213 to form an accommodating space 2120. The frame beam 22 includes an outer beam 221 and an adapter beam 222. The adapter beam 222 is positioned in the accommodating space 2120 and is bonded to the inner surface of the accommodating space 2120. The side wall plate 212, on the side of the first extension portion 213 closer to the main body plate 211, the first extension portion 213, and the second extension portion 214 cooperate to form a stepped portion. The outer beam 221 has a stepped surface that adapts to the outer surface of the stepped portion, and the stepped surface is bonded to the stepped portion. The second extension portion 214 is riveted to the outer beam 221. The folding portion 215 extends outward from the side of the second extension portion 214 away from the first extension portion 213, and the outer side beam 221 is provided with a support portion 2211 adapted to be connected to the folding portion 215. The first extension portion 213 is located in the middle area of ​​the side wall plate 212 along the height direction Z. The frame beam 22 is provided with a receiving portion 223 extending toward the main body plate 211. The receiving portion 223 is connected to the side of the main body plate 211 away from the side wall plate 212. A receiving groove 2111 is recessed on the main body plate 211 toward the side of the side wall plate 212 corresponding to the position of the receiving portion 223, and the receiving portion 223 is placed in the receiving groove 2111.

[0212] Through the above scheme, the frame beam 22 and the box body 21 can have a larger bonding area, thereby improving the bonding strength. Moreover, the first extension portion 213 and the folded portion 215 are bonded together with the frame beam 22, so that the frame beam 22 can well support the box body 21 and improve the stability of the bonding between the outer surface of the side wall panel 212 and the frame beam 22, thereby improving the connection strength between the frame beam 22 and the box body 21, thereby improving the structural strength of the box body 20.

[0213] According to some embodiments of the present application, the present application further provides an electrical device, including the battery device 200 as described in the above embodiment, and the battery device 200 is used to store or provide electrical energy.

[0214] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: It includes a box body and a battery cell installed in the box body; the box body includes a box body made of non-metallic material and a frame beam connected to the box body; The box body includes a main body plate, a side wall plate and a first extension portion. The battery cell is supported on the main body plate. The side wall plate is extended from the edge of the main body plate along the height direction of the box body to protrude toward one side of the main body plate. The frame beam is bonded to the outer surface of the side wall plate. The first extension portion is extended outward from the outer surface of the side wall plate. The frame beam is provided with a first receiving space adapted to accommodate the first extension portion.

2. The battery device according to claim 1, wherein: The box body includes a second extension portion, the second extension portion extending from a side of the first extension portion away from the side wall plate toward a side away from the main plate, and an inner surface of the second extension portion cooperates with the first extension portion to form an accommodating space; The frame beam includes an outer beam and an adapter beam, the adapter beam is placed in the accommodating space, the side wall plate is close to the side of the main body plate at the first extension portion, the first extension portion and the second extension portion cooperate to form a step portion, the outer beam has a step surface adapted to the outer surface of the step portion, and the step surface is bonded to the step portion.

3. The battery device according to claim 2, wherein: The box body includes a folding portion, which extends from a side of the second extension portion away from the first extension portion toward a side away from the main plate, and the outer beam is provided with a supporting portion adapted to be connected to the folding portion.

4. The battery device according to claim 2, wherein: The second extension portion is riveted to the outer side beam.

5. The battery device according to claim 2, wherein: The adapting beam is bonded to the inner surface of the accommodating space.

6. The battery device according to any one of claims 1 to 5, characterized in that The first extension portion is located in a middle area of ​​the side wall plate along the height direction of the box body.

7. The battery device according to any one of claims 1 to 5, characterized in that The first extension portion is located in the middle area of ​​the side wall plate along the height direction of the box body, and the side of the side wall plate extending outward away from the main body plate is provided with a folding plate, and the side of the frame beam facing away from the main body plate is adaptively connected to the folding plate.

8. The battery device according to any one of claims 1 to 5, characterized in that The box body includes a third extension portion, which extends outward from the outer surface of the side wall plate. The third extension portion is located on the side of the first extension portion close to the main body plate, and a second receiving space adapted to accommodate the third extension portion is provided on the frame beam.

9. The battery device according to claim 8, wherein: There are multiple third extension parts, and the multiple third extension parts are spaced apart along the height direction of the box body. The frame beam is correspondingly provided with multiple second receiving spaces for respectively accommodating the third extension parts.

10. The battery device according to any one of claims 1 to 5 and 9, characterized in that: The frame beam is extended toward the main body plate to form a receiving portion, and the receiving portion is connected to a surface of the main body plate that is away from the side wall plate.

11. The battery device according to claim 10, wherein: The main body plate is provided with a receiving groove on a side corresponding to the position of the receiving portion and facing the side wall plate, and the receiving portion is placed in the receiving groove.

12. The battery device according to any one of claims 1 to 5, 9 and 11, characterized in that: The box body is an integrally formed structure.

13. The battery device according to any one of claims 1 to 5, 9 and 11, characterized in that: The box body is in a basin-shaped structure.

14. The battery device according to any one of claims 1 to 5, 9 and 11, wherein: The box body is a composite material box.

15. An electrical device, characterized in that: The battery device comprises the battery device according to any one of claims 1 to 14, wherein the battery device is used to store or provide electrical energy.

Images