Battery device and vehicle

Abstract

The utility model discloses a battery device and a vehicle. The battery device comprises a box body, a first lining plate and a mounting sleeve, the box body comprises a first box body part and a second box body part, the first box body part and the second box body part are oppositely arranged along a first direction and are mutually covered, and the first box body part and the second box body part jointly define an accommodating space for accommodating a battery monomer. The first lining plate is connected to the side, deviating from the containing space in the first direction, of the first box body part. One end of the hanging sleeve is connected to the side, away from the first box body part, of the first lining plate, and the hanging sleeve is used for connecting the box body with electric equipment. According to the technical scheme, the air tightness of the battery device can be improved, and the connection strength and the connection stability of the battery device and the vehicle are improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a battery device and a vehicle. Background Art

[0002] The battery device is used to provide electrical energy for the vehicle, drive the vehicle, regulate the temperature inside the vehicle, and provide electrical energy for display devices and audio equipment in the vehicle.

[0003] The battery device moves with the operation of the vehicle, so how to improve the connection stability between the battery device and the vehicle body is also one of the issues studied in this field. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and a vehicle, which can improve the connection strength and connection stability between the battery device and the vehicle.

[0005] In a first aspect, the present application provides a battery device, including a box, a first liner, and a mounting sleeve. The box includes a first box portion and a second box portion, the first box portion and the second box portion are arranged opposite to each other along a first direction and cover each other, and the first box portion and the second box portion jointly define a storage space for accommodating a battery cell. The first liner is connected to a side of the first box portion that is away from the storage space in the first direction. One end of the mounting sleeve is connected to a side of the first liner that is away from the first box portion, and the mounting sleeve is used to connect the box to an electrical device.

[0006] In the technical solution of the embodiment of the present application, a box is provided to accommodate the battery cells, so as to provide a stable and relatively closed space for the battery cells and improve the stability of the battery cells during operation. The box is divided into a first box part and a second box part, which is convenient for the assembly of the battery cells and related electrical components. The first lining plate is connected to the first box part of the box, which improves the structural strength of the first box part and also enhances the stability of the installation of the mounting sleeve. In addition, the mounting sleeve is arranged on the first lining plate, which replaces the method of directly connecting the mounting sleeve to the first box part, thereby reducing the risk of failure of the air tightness of the box due to leakage holes in the first box part caused by the welding process, and improving the overall structural stability and air tightness of the box, thereby improving the operating stability of the battery device.

[0007] In some embodiments, the battery device further includes a first fixing member, the mounting sleeve and the first liner are connected by the first fixing member, and the first fixing member is arranged around the circumference of the mounting sleeve. In the above structure, the mounting sleeve and the first liner are stably connected by arranging the first fixing member, and the first fixing member is arranged around the circumference of the mounting sleeve, which further improves the strength of the connection between the mounting sleeve and the first liner, thereby improving the stability of the connection between the battery device and the electrical equipment.

[0008] In some embodiments, the battery device further includes a plurality of second fixing members, the first lining plate and the first box body are connected by the second fixing members, and the plurality of second fixing members are arranged at intervals along the circumference of the first lining plate. In the above structure, by arranging the second fixing members, the first lining plate and the first box body are stably connected to further improve the stability of the connection between the mounting sleeve and the box body.

[0009] In some embodiments, the battery device further comprises a second lining plate, the second lining plate being connected to a side of the first lining plate away from the first box body, the second lining plate being provided with a first through hole, the mounting sleeve being passed through the first through hole and connected to the second lining plate. In the above structure, by providing the second lining plate, the structural rigidity of the mounting sleeve installation position is enhanced, and the structural strength of the box body as a whole is also improved.

[0010] In some embodiments, a first recess is provided on the surface of the second liner facing the first liner, a first through hole is provided in the first recess, an installation space is formed between the first recess and the first liner, and at least a portion of the mounting sleeve is provided in the installation space. In the above structure, the first recess is provided to increase the structural strength of the second liner, and the mounting sleeve is embedded in the installation space, thereby increasing the installation space of the mounting sleeve and improving the stability of the connection.

[0011] In some embodiments, along the first direction, the orthographic projection of the second lining plate on the first box body falls within the orthographic projection range of the first lining plate on the first box body. In the above structure, overlapping the second lining plate with the first lining plate can improve the overall structural strength of the box body and the first lining plate and the second lining plate, thereby improving the connection stability between the mounting sleeve and the box body.

[0012] In some embodiments, the mounting sleeve is provided with a second through hole coaxial with the first through hole, and the second through hole is provided with an internal thread. In the above structure, the second through hole is provided to facilitate the connection between the mounting sleeve and the electrical device, and the second through hole is provided with an internal thread for setting a connecting bolt to detachably connect the mounting sleeve and the electrical device.

[0013] In some embodiments, one end of the mounting sleeve protrudes from the surface of the second liner away from the first liner and forms a mounting portion, and a third fixing member is provided between the mounting portion and the second liner to connect the second liner to the mounting sleeve. In the above structure, the mounting area of ​​the mounting sleeve is increased by providing the mounting portion, and the stability of the connection between the mounting sleeve and the electrical equipment is improved. The third fixing member is provided to improve the connection strength between the mounting sleeve and the second liner.

[0014] In some embodiments, the third fixing member is disposed around the circumference of the mounting portion. The above structure can increase the connection area between the third fixing member and the mounting portion, and improve the strength and stability of the connection between the mounting sleeve and the second lining plate.

[0015] In some embodiments, the outer wall of the mounting sleeve is provided with a circumferentially protruding limit portion, which abuts against the side of the second liner plate facing the first liner plate. In the above structure, the limit portion can limit the movement of the mounting sleeve relative to the second liner plate, thereby improving the stability of the mounting sleeve connection.

[0016] In some embodiments, the length direction of the first box body is the second direction, and the length direction of the first lining plate is consistent with the second direction. In the above structure, the first lining plate is extended along the length direction of the first box body, and the first lining plate is used as a mounting and fixing beam, thereby increasing the connection area between the first lining plate and the first box body and improving the structural strength of the first lining plate.

[0017] In some embodiments, there are multiple mounting sleeves, and the multiple mounting sleeves are evenly spaced on the first liner along the second direction. In the above structure, providing multiple mounting sleeves can increase the number of connections between the box and the electrical equipment, and improve the stability of the connection between the box and the electrical equipment.

[0018] In some embodiments, there are multiple first lining plates, and the multiple first lining plates are arranged at intervals along the third direction, and the third direction is perpendicular to the first direction and the second direction. In the above structure, the local structural strength and the overall structural strength of the box body are improved by arranging multiple first lining plates, and the stability of the connection between the box body and the electrical equipment is improved.

[0019] In some embodiments, one side of the first lining plate extends along the third direction to form a first extension portion, and one side of the second lining plate extends along the third direction to form a second extension portion, the first extension portion is attached to and connected with the first box body portion, and the second extension portion is attached to and connected with the first extension portion. By providing the first extension portion, the contact area between the second lining plate and the first lining plate is increased, and the connection strength between the second lining plate and the first lining plate is improved. The provision of the second extension portion increases the contact area between the first lining plate and the first box body portion, and increases the contact area between the first lining plate and the first box body portion.

[0020] In a second aspect, the present application provides a vehicle, which includes the battery device in the above embodiment.

[0021] In some embodiments, the vehicle includes a vehicle body, the vehicle body includes a seat mounting beam, and the mounting sleeve is connected to the seat mounting beam. The above structure connects the mounting sleeve to the seat mounting beam of the vehicle, improves the convenience of installation and enhances the connection strength between the battery device and the vehicle body.

[0022] 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

[0023] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0024] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0025] Figure 2 An exploded schematic diagram of a battery device provided in some embodiments of the present application;

[0026] Figure 3 A schematic diagram of a partial structure of a battery device provided in some embodiments of the present application;

[0027] Figure 4 A schematic diagram of a partial structure of a battery device provided in some other embodiments of the present application;

[0028] Figure 5 for Figure 4 Schematic diagram of the structure of the AA section;

[0029] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part B;

[0030] Figure 7 for Figure 4 Structural diagram of the CC section;

[0031] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part D.

[0032] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0033] 1. Vehicle; 2. Battery device; 201. First fixing member; 202. Second fixing member; 203. Fourth fixing member; 204. Third fixing member; 3. Controller; 4. Motor; 5. Box; 5a. First box portion; 5b. Second box portion; 5c. Accommodation space; 6. Battery cell; 7. First lining plate; 701. Second recess; 702. First extension portion; 8. Mounting sleeve; 801. Second through hole; 802. Mounting portion; 803. Limiting portion; 9. Second lining plate; 901. First recess; 902. Second extension portion; X. First direction; Y. Second direction; Z. Third direction. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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).

[0040] 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.

[0041] 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.

[0042] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can 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 application generally indicates that the associated objects before and after are in an "or" relationship.

[0043] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0044] In the embodiments of the present application, "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the absolutely perpendicular situation, but also the roughly perpendicular situation conventionally recognized in engineering. For example, if the angle between two directions is 85°-95°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.

[0045] The term “plurality” used in this application refers to two or more (including two).

[0046] 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.

[0047] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0048] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, which is arranged between the negative electrode and the positive electrode. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and released back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0049] The box in the battery device, the upper cover of the box is usually a single-layer metal plate. The upper cover is mainly used for protection and sealing of the top of the box. In order to reduce the overall weight of the battery device and increase the energy density, the thickness of the upper cover is usually thin, so its rigidity is low and cannot be used as a supporting structure. The battery device usually requires the mounting sleeve to be connected to the upper cover, and then the mounting sleeve is installed on the mounting beam of the vehicle. After the upper cover and the mounting sleeve are welded, leakage holes are easily formed, causing the airtightness of the box to fail and an effective and stable connection cannot be formed.

[0050] In view of this, the battery device of the present application provides a stable and relatively closed space for the battery cells by arranging a box to accommodate the battery cells, thereby improving the stability of the battery cells during operation. The box is divided into a first box part and a second box part, which is convenient for the assembly of the battery cells and related electrical components. The first lining plate is connected to the first box part of the box, which improves the structural strength of the first box part and also enhances the stability of the installation of the mounting sleeve. In addition, the mounting sleeve is arranged on the first lining plate, replacing the method of arranging the mounting sleeve on the first box part, which reduces the risk of leakage holes in the first box part due to the welding process, resulting in failure of the airtightness of the box, and improves the overall structural stability and airtightness of the box, thereby improving the operating stability of the battery device.

[0051] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0052] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0053] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0054] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0055] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0056] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0057] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0058] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0059] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle 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, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0060] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0061] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0062] As shown in FIG1 , a battery device 2 is disposed inside the vehicle 1, and the battery device 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery device 2 may be used to power the vehicle 1, for example, the battery device 2 may be used as an operating power source for the vehicle 1.

[0063] The vehicle 1 may further include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, to meet the power requirements of starting, navigating, and driving the vehicle 1.

[0064] In some embodiments of the present application, the battery device 2 can not only be used as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0065] Figure 2 Schematic diagram of an explosion of a battery provided in some embodiments of the present application. Figure 2 As shown, the battery device 2 includes a housing 5 and a battery cell 6, and the battery cell 6 is accommodated in the housing 5. The battery cell 6 may be the smallest unit constituting the battery.

[0066] The box body 5 is used to accommodate the battery cells 6, and the box body 5 can be of various structures.

[0067] In some embodiments, the box 5 may include a first box portion 5a and a second box portion 5b, the first box portion 5a and the second box portion 5b cover each other, and the first box portion 5a and the second box portion 5b together define a storage space 5c for accommodating the battery cell 6. The second box portion 5b may be a hollow structure with one end open, the first box portion 5a is a plate-shaped structure, and the first box portion 5a covers the open side of the second box portion 5b to form the box 5 with the storage space 5c; the first box portion 5a and the second box portion 5b may also be a hollow structure with one side open, and the open side of the first box portion 5a covers the open side of the second box portion 5b to form the box 5 with the storage space 5c. Of course, the first box portion 5a and the second box portion 5b may be in various shapes, such as a cylinder, a cuboid, etc.

[0068] In order to improve the sealing performance after the first box body part 5a and the second box body part 5b are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body part 5a and the second box body part 5b.

[0069] Assuming that the first box body portion 5a covers the top of the second box body portion 5b, the first box body portion 5a can also be called an upper box cover, and the second box body portion 5b can also be called a lower box.

[0070] In the battery device 2, the battery cell 6 can be one or more. If there are more than one battery cell 6, the battery cells 6 can be connected in series, in parallel or in mixed connection. Mixed connection means that the battery cells 6 are connected in series and in parallel.

[0071] Multiple battery cells 6 can be directly connected in series, parallel or mixed together, and then the whole formed by the multiple battery cells 6 can be accommodated in the box 5; of course, multiple battery cells 6 can also be first connected in series, parallel or mixed to form a battery module, and then multiple battery modules can be connected in series, parallel or mixed to form a whole and accommodated in the box 5.

[0072] Please refer to Figures 3 to 5 , Figure 3 A schematic diagram of a partial structure of a battery device provided in some embodiments of the present application, Figure 4 A partial structural schematic diagram of a battery device provided in some other embodiments of the present application, Figure 5 for Figure 4 Schematic diagram of the structure of the AA section.

[0073] As shown in the figure, the battery device 2 of the embodiment of the present application includes a box body 5, a first liner 7 and a mounting sleeve 8. The box body 5 has a storage space 5c for accommodating a battery cell 6. The box body 5 includes a first box body portion 5a and a second box body portion 5b. The first box body portion 5a and the second box body portion 5b are arranged opposite to each other along a first direction X and cover each other. The first box body portion 5a and the second box body portion 5b jointly define a storage space 5c for accommodating a battery cell 6. The first liner 7 is connected to a side of the first box body portion 5a that is away from the storage space 5c in the first direction X. One end of the mounting sleeve 8 is connected to a side of the first liner 7 that is away from the first box body portion 5a. The mounting sleeve 8 is used to connect the box body 5 to an electrical device.

[0074] Optionally, the first box body part 5a can be a flat plate structure, and the second box body part 5b can be a box-shaped structure with an opening. The first box body part 5a covers the opening, and the second box body part 5b includes a bottom wall and side walls. The bottom walls of the first box body part 5a and the second box body part 5b are arranged opposite to each other.

[0075] Optionally, the first box body 5a is a box-shaped structure with an opening, the first box body 5a includes a top plate and side plates, the second box body 5b is a flat plate structure, and the second box body 5b is arranged opposite to the top plate. The first lining plate 7 is connected to the side of the top plate away from the accommodating space 5c.

[0076] The first lining plate 7 can be made of a material with certain structural strength, high temperature resistance and corrosion resistance. For example, steel, aluminum alloy, plastic and composite materials. The first lining plate 7 is directly connected to the box body 5, which can increase the rigidity and strength of the overall structure and improve the stability and durability of the equipment. In the battery device 2, the first lining plate 7 can provide support for the mounting sleeve 8, battery cell 6 or other components to ensure their correct installation and stable operation. The first lining plate 7 can also protect the main structure from external impact, corrosion or other damage. The first lining plate 7 can be fixed to the main structure by welding, bolting, adhesives, etc.

[0077] The mounting sleeve 8 is made of metal, plastic or composite materials, such as steel, stainless steel, aluminum alloy, etc. Metal materials have high strength, good corrosion resistance and processability, and are suitable for scenes with large loads and harsh environments. For example, nylon, polypropylene, etc. can also be used. Plastic materials have the advantages of light weight, low cost, and easy processing and molding. For example, there are also carbon fiber composite materials. Composite materials have the advantages of high strength, light weight, and good corrosion resistance.

[0078] The mounting sleeve 8 is usually cylindrical or tubular, so as to be inserted and fixed in the mounting hole of the battery box 5. One end of the mounting sleeve 8 is designed with a connection structure, such as a thread, a buckle or a flange, so as to be connected with an electrical device or other components. The mounting sleeve 8 can withstand the weight and vibration of the battery device 2, and supports and protects the battery box 5 to prevent damage caused by vibration or impact.

[0079] In the technical solution of the embodiment of the present application, a box body 5 is provided to accommodate the battery cell 6, so as to provide a stable and relatively closed space for the battery cell 6, thereby improving the stability of the battery cell 6 during operation. The box body 5 is divided into a first box body part 5a and a second box body part 5b, which is convenient for the assembly of the battery cell 6 and related electrical components. The first lining plate 7 is connected to the first box body part 5a of the box body 5, which improves the structural strength of the first box body part 5a and also enhances the stability of the installation of the mounting sleeve 8. In addition, the mounting sleeve 8 is arranged on the first lining plate 7, instead of the mounting sleeve 8 being arranged on the first box body part 5a, which reduces the risk of the airtightness failure of the box body 5 due to leakage holes in the first box body part 5a caused by the welding process, improves the overall structural stability and airtightness of the box body 5, and thus improves the operating stability of the battery device 2.

[0080] like Figure 5 as well as Figure 6 As shown, in some embodiments of the present application, the battery device 2 further includes a first fixing member 201 , and the mounting sleeve 8 and the first liner 7 are connected via the first fixing member 201 , and the first fixing member 201 is arranged around the circumference of the mounting sleeve 8 .

[0081] Exemplarily, the mounting sleeve 8 is arranged circumferentially, and the mounting sleeve 8 is firmly connected to the first liner 7 by welding. The first fixing member 201 is a welding ring formed by the welding process. The first fixing member 201 is arranged circumferentially around the mounting sleeve 8. This layout can disperse the force on the connection point and avoid connection failure caused by excessive force on a single point.

[0082] In the above structure, the mounting sleeve 8 is stably connected to the first liner 7 by setting the first fixing member 201, and the first fixing member 201 is circumferentially arranged around the mounting sleeve 8, thereby further improving the strength of the connection between the mounting sleeve 8 and the first liner 7, thereby improving the stability of the connection between the battery device 2 and the electrical equipment.

[0083] In some embodiments of the present application, the battery device 2 includes a plurality of second fixing members 202 , the first lining plate 7 and the first box body portion 5 a are connected via the second fixing members 202 , and the plurality of second fixing members 202 are arranged at intervals along the circumference of the first lining plate 7 .

[0084] Exemplarily, the first lining plate 7 and the first box body 5a are connected by spot welding, and the second fixing member 202 is a welding point formed by spot welding. A plurality of second fixing members 202 are arranged at intervals along the circumference of the first lining plate 7, further enhancing the uniformity and stability of the connection. This distribution method enables the entire connection area to be effectively supported, thereby improving the bearing capacity of the entire structure.

[0085] In some embodiments of the present application, the battery device 2 also includes a second lining plate 9, which is connected to the side of the first lining plate 7 facing away from the first box body portion 5a. The second lining plate 9 is provided with a first through hole, and the mounting sleeve 8 is passed through the first through hole and connected to the second lining plate 9.

[0086] The first lining plate 7 can be made of a material with certain structural strength, high temperature resistance and corrosion resistance. For example, steel, aluminum alloy, plastic and composite materials. The second lining plate 9 is directly connected to the first lining plate 7, which can increase the rigidity and strength of the overall structure and improve the stability and durability of the equipment. The first through hole on the second lining plate 9 is used to install the mounting sleeve 8, and to connect and position the mounting sleeve 8, thereby improving the stability and position accuracy of the installation of the mounting sleeve 8. The second lining plate 9 can be fixed to the first lining plate 7 by welding, bolt connection, adhesive and the like.

[0087] like Figure 7 as well as Figure 8 As shown, in some embodiments of the present application, a first recess 901 is provided on the surface of the second lining plate 9 facing the first lining plate 7, a first through hole is provided in the first recess 901, an installation space is formed between the first recess 901 and the first lining plate 7, and at least a portion of the mounting sleeve 8 is provided in the installation space.

[0088] An installation space is formed between the first recess 901 and the first lining plate 7, providing a necessary installation and positioning environment for the mounting sleeve 8. With this design, the mounting sleeve 8 can be more firmly installed between the two lining plates, reducing connection problems caused by improper installation or insufficient space. In addition, the mounting sleeve 8 is not only in contact with the second lining plate 9, but also connected to the first lining plate 7.

[0089] The presence of the first recess 901 increases the thickness or material distribution of the second lining plate 9 in a specific direction, thereby possibly enhancing its ability to resist external forces (such as bending, stretching, etc.).

[0090] In the above structure, the first recess 901 is provided to increase the structural strength of the second lining plate 9, and the mounting sleeve 8 is embedded in the installation space, thereby increasing the installation space of the mounting sleeve 8 and improving the stability of the connection.

[0091] In some optional embodiments, a second recess 701 is provided on one side of the first lining plate 7 facing the second lining plate 9, and the second recess 701 is provided corresponding to the first recess 901. The above structure further increases the volume of the installation cavity and improves the stability of the installation of the mounting sleeve 8.

[0092] In some embodiments of the present application, along the first direction X, the orthographic projection of the second lining plate 9 on the first box portion 5a falls within the orthographic projection range of the first lining plate 7 on the first box portion 5a.

[0093] By overlapping the second liner 9 with the first liner 7, the structural strength and rigidity of this area can be increased. This is because the two layers of material work together to resist external forces and provide better support. This overlapping design also helps to disperse external forces and reduce the situation where a single point is subjected to excessive force, thereby improving the durability and safety of the entire structure. When the mounting sleeve 8 is installed on a structure composed of reinforced liners, it can more firmly withstand external or internal loads, reducing the risk of failure caused by loose connections or structural damage.

[0094] like Figure 6 As shown, in some embodiments of the present application, a second through hole 801 coaxial with the first through hole is provided on the mounting sleeve 8, and an internal thread is provided in the second through hole 801.

[0095] The coaxiality ensures that the mounting sleeve 8 can be accurately installed between the second lining plate 9 and the first lining plate 7, and the connection with the electrical equipment can also be precisely aligned. The second through hole 801 is provided with an internal thread. This design enables the mounting sleeve 8 to be detachably connected to the electrical equipment through connecting bolts. The internal thread provides a standard connection interface, allowing the mounting sleeve 8 and the electrical equipment to be fixed with standard bolts or nuts. This detachable connection method facilitates the installation, maintenance and replacement of electrical equipment, and improves the flexibility and scalability of the battery device 2.

[0096] In some embodiments of the present application, one end of the mounting sleeve 8 protrudes from the surface of the second liner 9 away from the first liner 7 and forms a mounting portion 802. A third fixing member 204 is provided between the mounting portion 802 and the second liner 9 to connect the second liner 9 with the mounting sleeve 8.

[0097] One end of the mounting sleeve 8 protrudes from the surface of the second lining plate 9 away from the first lining plate 7, and forms a mounting portion 802. The two ends of the mounting sleeve 8 are respectively located on the opposite sides of the second lining plate 9, and an extended portion is formed on the side away from the first lining plate 7. The presence of the mounting portion 802 increases the contact area between the mounting sleeve 8 and the electrical equipment, thereby improving the stability of the connection. A larger contact area helps to disperse the force on the connection point, reduce the situation where the single point is too large, and thus enhance the durability of the connection.

[0098] A third fixing member 204 is provided between the mounting portion 802 and the second lining plate 9 to strengthen the connection strength between the mounting sleeve 8 and the second lining plate 9 .

[0099] Optionally, the mounting portion 802 is connected to the second lining plate 9 by welding, and the third fixing member 204 is a welding connection point.

[0100] The third fixing member 204 improves the stability of the mounting sleeve 8 at the mounting portion 802, and reduces the risk of loosening or falling off due to factors such as vibration or impact. By firmly fixing the mounting sleeve 8 on the second lining plate 9, the third fixing member 204 also indirectly improves the stability of the connection between the mounting sleeve 8 and the electrical equipment, because the entire connection system is more solid and reliable.

[0101] In some embodiments of the present application, the third fixing member 204 is disposed around the circumference of the mounting portion 802 .

[0102] The third fixing member 204 is designed to be arranged around the circumference of the mounting portion 802 to form a welded connection ring, which is distributed around the entire mounting portion 802. The surrounding arrangement increases the contact area between the third fixing member 204 and the mounting portion 802, thereby providing a wider range of support and fixation. The above structure can increase the connection area between the third fixing member 204 and the mounting portion 802, and improve the strength and stability of the connection between the mounting sleeve 8 and the second lining plate 9.

[0103] In some embodiments of the present application, the outer wall of the mounting sleeve 8 is provided with a limiting portion 803 protruding along the circumferential direction, and the limiting portion 803 is pressed against the side of the second lining plate 9 facing the first lining plate 7 .

[0104] The third fixing member 204 and the limiting portion 803 are respectively arranged on opposite sides of the second lining plate 9 to limit the movement of the mounting sleeve 8 relative to the second lining plate 9, thereby reducing the risk of the mounting sleeve 8 moving out of the second lining plate 9. Abutment means that the limiting portion 803 abuts against the second lining plate 9, and at the same time, there is a mutual squeezing pressure between the limiting portion 803 and the second lining plate 9. The limiting portion 803 abuts against the side of the second lining plate 9 facing the first lining plate 7, which can further improve the stability of the relative position between the mounting sleeve 8 and the second lining plate 9. The above structure improves the stability of the connection of the mounting sleeve 8.

[0105] In some embodiments of the present application, the battery device 2 further includes a fourth fixing member 203, which passes through the second lining plate 9, the first lining plate 7 and the first box body 5a in sequence to connect the second lining plate 9, the first lining plate 7 and the first box body 5a.

[0106] The fourth fixing member 203 is designed to pass through the second lining plate 9, the first lining plate 7 and the first box body 5a in sequence to tightly connect the three components together. Optionally, the second lining plate 9, the first lining plate 7 and the first box body 5a are connected together by spot welding, and the fourth fixing member 203 is a welding point formed by welding to improve the connection strength and sealing performance.

[0107] In the above structure, a fourth fixing member 203 is provided to connect the second lining plate 9 , the first lining plate 7 and the box body 5 , thereby improving the strength and stability of the connection between the first lining plate 7 and the second lining plate 9 and the box body 5 .

[0108] like Figure 4 As shown, in some embodiments of the present application, there are multiple fourth fixing members 203 , and the multiple fourth fixing members 203 are arranged at intervals along the circumference of the second lining plate 9 .

[0109] The provision of multiple fourth fixings 203 increases the number of connection points, thereby increasing the contact area between the first lining plate 7, the second lining plate 9 and the first box body portion 5a. A larger contact area can more effectively disperse external forces and reduce the situation where a single point is subjected to excessive force, thereby improving the strength and durability of the connection. The fourth fixings 203 are arranged at intervals along the circumference of the second lining plate 9 so that multiple connection points are evenly distributed on the entire second lining plate 9. This distribution method helps to balance the forces in all directions and ensure that the structure can provide stable support in all directions. When the battery device 2 is subjected to external forces, such evenly distributed connection points can more effectively resist deformation and damage, thereby improving the stability of the overall structure.

[0110] like Figure 3 as well as Figure 4 As shown, in some embodiments of the present application, the length direction of the first box body portion 5a is the second direction Y, and the length direction of the first lining plate 7 is consistent with the second direction Y.

[0111] Optionally, the battery device 2 includes battery cells 6 stacked along the second direction Y, and the first lining plate 7 is arranged corresponding to the plurality of battery cells 6. The length direction of the first lining plate 7 is designed to extend along the second direction Y, that is, the same as the direction in which the battery cells 6 are stacked. This design enables the first lining plate 7 to span across the plurality of battery cells 6, playing a supporting and fixing role. In this structure, the first lining plate 7 not only serves as a component of the battery device 2, but also serves as a mounting and fixing beam. It provides a stable mounting platform for the box body 5 by connecting with the first box body portion 5a.

[0112] In the above structure, the first lining plate 7 is extended along the length direction of the first box body 5a, and the first lining plate 7 is used as an installation fixing beam, thereby increasing the connection area between the first lining plate 7 and the first box body 5a and improving the structural strength of the first lining plate 7.

[0113] In some embodiments of the present application, there are multiple mounting sleeves 8, and the multiple mounting sleeves 8 are evenly spaced along the first direction X on the first lining plate 7.

[0114] In the above structure, a plurality of mounting sleeves 8 are evenly spaced on the first liner 7 along the first direction X. This distribution method improves the uniformity and consistency of the mounting sleeves 8 in the entire battery device 2. Providing a plurality of mounting sleeves 8 can increase the number of connection points between the box 5 and the electrical equipment, and more connection points can provide more extensive support and fixation, thereby improving the stability of the connection.

[0115] In some embodiments of the present application, there are multiple first lining plates 7, and the multiple first lining plates 7 are arranged at intervals along the third direction Z, and the third direction Z is perpendicular to the first direction X and the second direction Y respectively.

[0116] By providing a plurality of first lining plates 7, a reinforcement structure can be formed in specific areas of the box body 5, thereby improving the strength of these areas. Since the plurality of first lining plates 7 are distributed along the third direction Z, they work together to help improve the structural stability of the entire box body 5. When the box body 5 is connected to the electrical equipment, the reinforced structure can better withstand the stress and pressure on the connection point, thereby ensuring the stability of the connection.

[0117] like Figure 3 as well as Figure 4 As shown, in some embodiments of the present application, one side of the first lining plate 7 extends along the third direction Z to form a first extension portion 702, one side of the second lining plate 9 extends along the third direction Z to form a second extension portion 902, the first extension portion 702 is attached to and connected to the first box body portion 5a, the second extension portion 902 is attached to and connected to the first extension portion 702, and the fourth fixing member 203 passes through the first extension portion 702, the second extension portion 902 and the first box body portion 5a.

[0118] By providing the first extension part 702, the contact area between the second lining plate 9 and the first lining plate 7 is increased, and the connection strength between the second lining plate 9 and the first lining plate 7 is improved. The second extension part 902 is provided to increase the contact area between the first lining plate 7 and the first box body 5a, and the contact area between the first lining plate 7 and the first box body 5a is improved. The fourth fixing member 203 is provided on the first extension part 702 and the second extension part 902, and the connection strength and connection stability of the fourth fixing member 203 are improved.

[0119] In some optional embodiments, the battery device 2 includes a box body 5, a first liner 7, and a mounting sleeve 8. The box body 5 has a storage space 5c for accommodating a battery cell 6. The box body 5 includes a first box body portion 5a and a second box body portion 5b. The first box body portion 5a and the second box body portion 5b are arranged opposite to each other along the first direction X and cover each other. The first box body portion 5a and the second box body portion 5b jointly define a storage space 5c for accommodating a battery cell 6. The first liner 7 is connected to the side of the first box body portion 5a that is away from the storage space 5c in the first direction X. One end of the mounting sleeve 8 is connected to the side of the first liner 7 that is away from the first box body portion 5a. The mounting sleeve 8 is used to connect the box body 5 to an electrical device. The mounting sleeve 8 is connected to the first liner 7 by a first fixing member 201, and the first fixing member 201 is arranged around the circumference of the mounting sleeve 8. The first lining plate 7 is connected to the first box body 5a through a second fixing member 202, and a plurality of second fixing members 202 are arranged at intervals along the circumference of the first lining plate 7. The battery device 2 also includes a second lining plate 9, which is connected to the side of the first lining plate 7 away from the first box body 5a. The second lining plate 9 is provided with a first through hole, and a portion of the mounting sleeve 8 is provided in the first through hole and connected to the second lining plate 9. A first recess 901 is provided on the surface of the second lining plate 9 facing the first lining plate 7, and a first through hole is provided in the first recess 901. An installation space is formed between the first recess 901 and the first lining plate 7, and at least a portion of the mounting sleeve 8 is provided in the installation space. Along the first direction X, the orthographic projection of the second lining plate 9 on the first box body 5a falls within the orthographic projection range of the first lining plate 7 on the first box body 5a.

[0120] The embodiment of the present application also provides a vehicle 1, which includes the battery device 2 in the above embodiment. In the vehicle 1, a box 5 is provided in the battery device 2 to accommodate the battery cell 6, providing a stable and relatively closed space for the battery cell 6, and improving the stability of the battery cell 6 during operation. The box 5 is divided into a first box part 5a and a second box part 5b, which is convenient for the assembly of the battery cell 6 and related electrical components. The first lining plate 7 is connected to the first box part 5a of the box 5, which improves the structural strength of the first box part 5a and also enhances the stability of the installation of the mounting sleeve 8. In addition, the mounting sleeve 8 is arranged on the first lining plate 7, replacing the mounting sleeve 8 arranged on the first box part 5a, which reduces the risk of failure of the airtightness of the box 5 due to leakage holes in the first box part 5a caused by the welding process, improves the overall structural stability and airtightness of the box 5, and thus improves the operation stability of the battery device 2.

[0121] In some embodiments of the present application, the vehicle 1 includes a vehicle body, the vehicle body includes a seat mounting beam, and the mounting sleeve 8 is connected to the seat mounting beam.

[0122] In the above structure, the seat mounting beam is a part of the structure of the vehicle 1, and its position is relatively fixed and easy to locate. Connecting the mounting sleeve 8 here simplifies the installation process of the battery device 2, and reduces the installation difficulty and time cost. As a part of the load-bearing structure of the vehicle 1, the strength and stability of the seat mounting beam are fully guaranteed. Therefore, connecting the mounting sleeve 8 to the seat mounting beam can significantly improve the connection strength between the battery device 2 and the vehicle body, and improve the safety and stability of the vehicle 1 during driving.

[0123] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: A box body, comprising a first box body portion and a second box body portion, wherein the first box body portion and the second box body portion are arranged opposite to each other along a first direction and cover each other, and the first box body portion and the second box body portion jointly define an accommodation space for accommodating a battery cell; a first lining plate connected to a side of the first box portion facing away from the accommodation space in the first direction; A mounting sleeve has one end connected to a side of the first liner away from the first box body, and the mounting sleeve is used to connect the box body to an electrical device.

2. The battery device according to claim 1, characterized in that: The battery device further includes a first fixing member, the mounting sleeve and the first liner are connected via the first fixing member, and the first fixing member is disposed around the circumference of the mounting sleeve.

3. The battery device according to claim 1 or 2, characterized in that: The battery device further includes a plurality of second fixing members, the first lining plate and the first box body are connected via the second fixing members, and the plurality of second fixing members are arranged at intervals along the circumference of the first lining plate.

4. The battery device according to claim 1, characterized in that: The battery device also includes a second lining plate, which is connected to a side of the first lining plate away from the first box body, and a first through hole is provided on the second lining plate. The mounting sleeve is passed through the first through hole and connected to the second lining plate.

5. The battery device according to claim 4, characterized in that: A first recess is provided on the surface of the second lining plate facing the first lining plate, the first through hole is provided in the first recess, an installation space is formed between the first recess and the first lining plate, and at least a part of the mounting sleeve is provided in the installation space.

6. The battery device according to claim 5, characterized in that: Along the first direction, the orthographic projection of the second lining plate on the first box body portion falls within the orthographic projection range of the first lining plate on the first box body portion.

7. The battery device according to claim 4, characterized in that: The mounting sleeve is provided with a second through hole coaxial with the first through hole, and the second through hole is provided with an internal thread.

8. The battery device according to claim 4, characterized in that: One end of the mounting sleeve protrudes from the surface of the second liner away from the first liner to form a mounting portion, and a third fixing member is provided between the mounting portion and the second liner to connect the second liner with the mounting sleeve.

9. The battery device according to claim 8, characterized in that: The third fixing member is arranged around the circumference of the mounting portion.

10. The battery device according to claim 4, characterized in that: The outer wall of the mounting sleeve is provided with a limiting portion protruding along the circumferential direction, and the limiting portion is pressed against a side of the second lining plate facing the first lining plate.

11. The battery device according to any one of claims 4 to 10, characterized in that: The length direction of the first box body is the second direction, and the length direction of the first lining plate is consistent with the second direction.

12. The battery device according to claim 11, characterized in that: There are multiple mounting sleeves, and the multiple mounting sleeves are evenly spaced on the first liner along the second direction.

13. The battery device according to claim 11, characterized in that: There are multiple first lining plates, and the multiple first lining plates are arranged at intervals along a third direction, and the third direction is perpendicular to the first direction and the second direction respectively.

14. The battery device according to claim 13, characterized in that: One side of the first lining plate extends along the third direction to form a first extension portion, one side of the second lining plate extends along the third direction to form a second extension portion, the first extension portion is attached to and connected to the first box body portion, and the second extension portion is attached to and connected to the first extension portion.

15. A vehicle, characterized in that: The vehicle comprises a battery device as claimed in any one of claims 1-13.

16. The vehicle according to claim 15, characterized in that The vehicle comprises a vehicle body, the vehicle body comprises a seat mounting beam, and the mounting sleeve is connected to the seat mounting beam.

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