Battery device, sleeve assembly, battery box body and electric equipment

Abstract

The utility model discloses a battery device, a sleeve assembly, a battery box body and electric equipment, the battery device comprises a battery monomer and a battery box body, the battery box body at least comprises: a box body, which is provided with an accommodating space for accommodating the battery monomer, and is provided with a hanging hole; the sleeve assembly comprises a sleeve body and a gasket, the sleeve body is inserted into the mounting hole, at least part of the gasket is arranged on one end face of the sleeve body, and the side, opposite to the end face, of the gasket is used for abutting against the mounting piece; wherein one of the sleeve body and the gasket is provided with a first limiting part, the other one of the sleeve body and the gasket is provided with a second limiting part matched with the first limiting part, and the first limiting part is matched with the second limiting part so that the gasket can be fixed to the end face. By arranging the gasket, the risks of abrasion, corrosion and the like of the sleeve body can be reduced, so that the mounting strength and the mounting stability of the battery device can be improved, and the reliability of the battery device can be improved.

Description

Technical Field

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

[0002] With the development of battery technology, battery devices are applied to more and more fields, and gradually replace traditional petrochemical energy in fields such as vehicle power. In the related art, a sleeve assembly is usually arranged in the mounting hole of the battery box of the battery device, and the battery device is fixed by the mounting part and the sleeve assembly. However, the end face of the sleeve assembly is easily worn by the mounting part, which affects the connection strength and stability between the sleeve assembly and the mounting part, resulting in reduced mounting strength and mounting stability of the battery device. Utility Model Content

[0003] In view of the above problems, the present application provides a battery device, a sleeve assembly, a battery case and an electrical device to enhance the connection strength and stability between the sleeve assembly and the mounting component, thereby improving the mounting strength and mounting stability of the battery device.

[0004] In the first aspect, the present application provides a battery device, which includes a battery cell and a battery case, wherein the battery case includes at least: a case body, which forms a accommodating space, the accommodating space is used to accommodate the battery cell, and the case body is provided with a mounting hole; a sleeve assembly, which includes a sleeve body and a gasket, the sleeve body is inserted into the mounting hole, the gasket is at least partially provided on an end face of the sleeve body, and the side of the gasket facing away from the end face is used to stop with the mounting member; wherein, one of the sleeve body and the gasket is provided with a first limiting portion, and the other of the sleeve body and the gasket is provided with a second limiting portion adapted to the first limiting portion, and the first limiting portion cooperates with the second limiting portion to fix the gasket on the end face. By inserting the sleeve body into the mounting hole and at least partially arranging the gasket on one end face of the sleeve body, and the side of the gasket facing away from the end face is used to stop with the mounting part, on the one hand, during the installation or disassembly of the battery device, when the mounting part moves relative to the sleeve assembly, the gasket can play a buffering role and block the mounting part from contacting the end face of the sleeve body facing the gasket, which can effectively reduce the risks of wear and corrosion of the sleeve body, so that during the long-term disassembly and installation of the battery device and the long-term use of the battery device, the matching accuracy between the sleeve body and the mounting part is not affected, and the connection strength and stability between the sleeve body and the mounting part can be enhanced, thereby improving the mounting strength and mounting stability of the battery device, and further improving the reliability of the battery device; on the other hand, the gasket can provide additional support for the mounting part, reducing the risks of poor bite between the mounting part and the sleeve body or loosening of the mounting part , and the gasket can also play a role in dispersing stress, which can reduce the damage to the gasket and the sleeve body caused by stress concentration, and can further enhance the connection strength and stability between the sleeve assembly and the mounting part, so that the mounting strength and mounting stability of the battery device are further improved; thirdly, the sleeve body can allow the mounting part to pass through. Compared with the solution of fixing the battery device by welding, there is no need to reserve space for welding operations and accommodating welding structures, so that the structure is more compact and the occupied space of the battery device can be reduced; in addition, the sleeve body and the gasket are connected by the first limiting portion and the second limiting portion, which can not only enhance the connection strength between the sleeve body and the gasket, but also improve the structural strength and stability of the gasket itself, thereby improving the gasket's ability to disperse stress and the gasket's buffering capacity and supporting effect on the mounting part, so that the connection strength and stability between the sleeve assembly and the mounting part are further enhanced.

[0005] In some embodiments, the first limiting portion is disposed on the end surface, and the second limiting portion is disposed on the gasket. By disposing the first limiting portion on the end surface of the sleeve body and the second limiting portion on the gasket, the sleeve body and the gasket are connected by the first limiting portion and the second limiting portion, which can not only enhance the connection strength between the sleeve body and the gasket, but also enhance the structural strength and stability of the gasket itself, thereby enhancing the gasket's ability to disperse stress and the gasket's buffering capacity and support for the mounting, so that the connection strength between the sleeve body and the mounting is further enhanced.

[0006] In some embodiments, the first limiting portion includes a plurality of protrusions arranged at intervals along the circumference of the sleeve body, and the second limiting portion includes a plurality of notches arranged at intervals along the circumference, and the protrusions are clamped in the notches. In this way, on the one hand, the setting of the protrusions and the notches can play a role in positioning the gasket, so that the gasket can be set more quickly and accurately at the specified position of the end surface of the sleeve body, which can improve the positioning effect and positioning efficiency of the gasket, thereby effectively improving the connection efficiency between the gasket and the sleeve body; on the other hand, the protrusion is clamped in the notch, so that the protrusion can play a role in limiting the gasket, thereby reducing the risk of the gasket rotating or offsetting relative to the sleeve body, and further enhancing the connection strength and stability between the gasket and the sleeve body.

[0007] In some embodiments, the protrusion is disposed on a side of the end face away from the axis of the sleeve body, and is spaced from the edge of the end face close to the axis. This arrangement can reduce the risk of the end of the protrusion away from the sleeve body being worn by the mounting member due to the mounting member contacting the end of the protrusion away from the sleeve body, so that the matching accuracy between the sleeve body and the mounting member is not affected during long-term disassembly and installation of the battery device and long-term use of the battery device, and can enhance the connection strength and stability between the sleeve body and the mounting member.

[0008] In some embodiments, the first limiting portion includes a plurality of mounting posts arranged at intervals along the circumference of the sleeve body, and the second limiting portion includes a plurality of mounting holes arranged at intervals along the circumference, and the mounting posts are arranged in the mounting holes. In this way, on the one hand, the arrangement of the mounting posts and the mounting holes can play a role in positioning the gasket, so that the gasket can be arranged more quickly and accurately at the specified position of the end face of the sleeve body, which can improve the positioning effect and positioning efficiency of the gasket, thereby effectively improving the connection efficiency between the gasket and the sleeve body; on the other hand, arranging the mounting posts in the mounting holes can increase the friction between the gasket and the end face of the sleeve body, thereby reducing the risk of the gasket rotating or offsetting relative to the sleeve body, thereby further enhancing the connection strength between the gasket and the sleeve body.

[0009] In some embodiments, the mounting hole includes a first hole segment and a second hole segment that are interconnected, the first hole segment is located on a side of the second hole segment close to the end surface, and the radial dimension of the first hole segment along the sleeve body is smaller than the radial dimension of the second hole segment along the sleeve body. With such a configuration, on the one hand, the radial dimension of the first hole segment along the sleeve body is smaller, which can better guide the insertion of the mounting post and play a better limiting role for the mounting post, so that the mounting post can better position the gasket; on the other hand, the radial dimension of the second hole segment along the sleeve body is larger, which can provide sufficient space for the mounting post to continue to be inserted, so that the mounting post can be quickly inserted into the second hole segment after passing through the first hole segment, which can effectively reduce the difficulty of inserting the mounting hole, thereby improving the installation efficiency between the gasket and the sleeve body.

[0010] In some embodiments, the mounting post extends from the first hole segment to the outside of the side of the second hole segment away from the first hole segment. This arrangement facilitates the piercing of the portion of the mounting post extending to the outside of the side of the second hole segment away from the first hole segment, so that the portion of the mounting post extending to the outside of the side of the second hole segment away from the first hole segment is pierced into the second hole segment and fits against the inner wall of the second hole segment, thereby enhancing the connection strength between the gasket and the sleeve body.

[0011] In some embodiments, the mounting column includes a first connecting section connected to the end face and a second connecting section connected to an end of the first connecting section away from the end face, and the radial dimension of the first connecting section along the sleeve body is smaller than the radial dimension of the second connecting section along the sleeve body; wherein the first connecting section is arranged in the first hole section, and the second connecting section is arranged in the second hole section. By making the radial dimension of the first connecting section along the sleeve body smaller than the radial dimension of the second connecting section along the sleeve body, and the first connecting section is arranged in the first hole section with a smaller radial dimension of the sleeve body, and the second connecting section is arranged in the second hole section with a larger radial dimension of the sleeve body, the first connecting section and the second connecting section can be respectively matched with the first hole section and the second hole section, so as to better position and limit the gasket, reduce the risk of the gasket rotating or shifting, thereby enhancing the connection strength between the gasket and the sleeve body, which is conducive to enhancing the connection strength between the sleeve body and the mounting part.

[0012] In some embodiments, the orthographic projection of the gasket toward the sleeve body completely falls on the end surface. This arrangement can reduce the volume of the gasket while enhancing the connection strength and stability between the sleeve assembly and the mounting member, making the structure more compact, thereby reducing the space occupied by the battery device.

[0013] In some embodiments, the first limiting portion is arranged on the side of the sleeve body, and the gasket includes: a gasket body, which is arranged on the end surface; a plurality of second limiting portions, which are arranged at intervals along the circumference of the gasket body at the end of the gasket body away from the axis of the sleeve body, and the second limiting portion extends from the gasket body in a direction away from the axis and bends in a direction toward the other end surface of the sleeve body, and the second limiting portion at least partially abuts against the side surface. By making the second limiting portion extend from the gasket body in a direction away from the axis and bends in a direction toward the other end surface of the sleeve body, and the second limiting portion at least partially abuts against the side surface of the sleeve body, the second limiting portion can cover at least part of the side surface of the sleeve body and cover the outer area of ​​at least part of the connection between the end surface of the sleeve body and the gasket, which can reduce the risk of corrosion of the gasket and the sleeve body caused by impurities such as liquid or dust entering between the end surface of the sleeve body and the gasket, can improve the stability of the connection between the sleeve body and the gasket, reduce the risk of loosening and falling off of the gasket, and help improve the stability of the connection between the sleeve body and the mounting.

[0014] In some embodiments, among the plurality of second limiting parts, each second limiting part is provided with a slot in the area opposite to the side of the sleeve body; the first limiting part includes a plurality of blocks arranged at intervals along the circumference of the sleeve body on the side and adapted one by one to the slots of the plurality of second limiting parts, and the blocks are arranged in the slots. By setting the blocks on the sleeve body in the slots of the second limiting part of the gasket, the blocks can limit the gasket, reduce the risk of the gasket rotating or deviating relative to the sleeve body, and further enhance the connection strength between the gasket and the sleeve body.

[0015] In some embodiments, the orthographic projection of the gasket body toward the sleeve body at least covers the inner area of ​​the end face. By making the orthographic projection of the gasket body toward the sleeve body at least cover the inner area of ​​the end face of the sleeve body, the gasket body is located in the stop area of ​​the mounting part and stops with the gasket body, which can reduce the risk of the end face of the sleeve body being worn by the mounting part.

[0016] In some embodiments, a seal is provided between the end face and the gasket. In this way, on the one hand, the seal can further enhance the connection strength between the gasket and the sleeve body on the basis of the gasket and the sleeve body being connected through the first limiting portion and the second limiting portion; on the other hand, the seal can seal the gap between the end face and the gasket, which can reduce the risk of corrosion of the gasket and the sleeve body due to the entry of impurities such as liquid or dust between the end face and the gasket, and can improve the stability of the connection between the sleeve body and the gasket, reduce the risk of loosening and falling of the gasket, and help improve the stability of the connection between the sleeve body and the mounting member; thirdly, the seal can absorb and alleviate the vibration and impact of the sleeve assembly to a certain extent, and can further improve the stability of the connection between the sleeve body and the gasket.

[0017] In the second aspect, the present application provides a sleeve assembly, which includes: a sleeve body, used to be inserted into the mounting hole of the box body of the battery box; a gasket, at least partially provided on one end face of the sleeve body, and the side of the gasket facing away from the end face is used to stop with the mounting part; wherein, one of the sleeve body and the gasket is provided with a first limiting portion, and the other of the sleeve body and the gasket is provided with a second limiting portion adapted to the first limiting portion, and the first limiting portion cooperates with the second limiting portion to fix the gasket on the end face. By inserting the sleeve body into the mounting hole and at least partially arranging the gasket on one end face of the sleeve body, and the side of the gasket facing away from the end face is used to stop with the mounting part, on the one hand, during the installation or disassembly of the battery device, when the mounting part moves relative to the sleeve assembly, the gasket can play a buffering role and block the mounting part from contacting the end face of the sleeve body facing the gasket, which can effectively reduce the risks of wear and corrosion of the sleeve body, so that during the long-term disassembly and installation of the battery device and the long-term use of the battery device, the matching accuracy between the sleeve body and the mounting part is not affected, and the connection strength and stability between the sleeve body and the mounting part can be enhanced, thereby improving the mounting strength and mounting stability of the battery device, and further improving the reliability of the battery device; on the other hand, the gasket can provide additional support for the mounting part, reducing the risks of poor bite between the mounting part and the sleeve body or loosening of the mounting part , and the gasket can also play a role in dispersing stress, which can reduce the damage to the gasket and the sleeve body caused by stress concentration, and can further enhance the connection strength and stability between the sleeve assembly and the mounting part, so that the mounting strength and mounting stability of the battery device are further improved; thirdly, the sleeve body can allow the mounting part to pass through. Compared with the solution of fixing the battery device by welding, there is no need to reserve space for welding operations and accommodating welding structures, so that the structure is more compact and the occupied space of the battery device can be reduced; in addition, the sleeve body and the gasket are connected by the first limiting portion and the second limiting portion, which can not only enhance the connection strength between the sleeve body and the gasket, but also improve the structural strength and stability of the gasket itself, thereby improving the gasket's ability to disperse stress and the gasket's buffering capacity and supporting effect on the mounting part, so that the connection strength and stability between the sleeve assembly and the mounting part are further enhanced.

[0018] In some embodiments, the first limiting portion is disposed on the end surface, and the second limiting portion is disposed on the gasket. By disposing the first limiting portion on the end surface of the sleeve body and the second limiting portion on the gasket, the sleeve body and the gasket are connected by the first limiting portion and the second limiting portion, which can not only enhance the connection strength between the sleeve body and the gasket, but also enhance the structural strength and stability of the gasket itself, thereby enhancing the gasket's ability to disperse stress and the gasket's buffering capacity and support for the mounting, so that the connection strength between the sleeve body and the mounting is further enhanced.

[0019] In some embodiments, the first limiting portion includes a plurality of protrusions arranged at intervals along the circumference of the sleeve body, and the second limiting portion includes a plurality of notches arranged at intervals along the circumference, and the protrusions are clamped in the notches. In this way, on the one hand, the setting of the protrusions and the notches can play a role in positioning the gasket, so that the gasket can be set more quickly and accurately at the specified position of the end surface of the sleeve body, which can improve the positioning effect and positioning efficiency of the gasket, thereby effectively improving the connection efficiency between the gasket and the sleeve body; on the other hand, the protrusion is clamped in the notch, so that the protrusion can play a role in limiting the gasket, thereby reducing the risk of the gasket rotating or offsetting relative to the sleeve body, and further enhancing the connection strength and stability between the gasket and the sleeve body.

[0020] In some embodiments, the first limiting portion includes a plurality of mounting posts arranged at intervals along the circumference of the sleeve body, and the second limiting portion includes a plurality of mounting holes arranged at intervals along the circumference, and the mounting posts are arranged in the mounting holes. In this way, on the one hand, the arrangement of the mounting posts and the mounting holes can play a role in positioning the gasket, so that the gasket can be arranged more quickly and accurately at the specified position of the end face of the sleeve body, which can improve the positioning effect and positioning efficiency of the gasket, thereby effectively improving the connection efficiency between the gasket and the sleeve body; on the other hand, arranging the mounting posts in the mounting holes can increase the friction between the gasket and the end face of the sleeve body, thereby reducing the risk of the gasket rotating or offsetting relative to the sleeve body, thereby further enhancing the connection strength between the gasket and the sleeve body.

[0021] In some embodiments, the mounting hole includes a first hole segment and a second hole segment that are interconnected, the first hole segment is located on a side of the second hole segment close to the end surface, and the radial dimension of the first hole segment along the sleeve body is smaller than the radial dimension of the second hole segment along the sleeve body. With such a configuration, on the one hand, the radial dimension of the first hole segment along the sleeve body is smaller, which can better guide the insertion of the mounting post and play a better limiting role for the mounting post, so that the mounting post can better position the gasket; on the other hand, the radial dimension of the second hole segment along the sleeve body is larger, which can provide sufficient space for the mounting post to continue to be inserted, so that the mounting post can be quickly inserted into the second hole segment after passing through the first hole segment, which can effectively reduce the difficulty of inserting the mounting hole, thereby improving the installation efficiency between the gasket and the sleeve body.

[0022] In some embodiments, the mounting column includes a first connecting section connected to the end face and a second connecting section connected to an end of the first connecting section away from the end face, and the radial dimension of the first connecting section along the sleeve body is smaller than the radial dimension of the second connecting section along the sleeve body; wherein the first connecting section is arranged in the first hole section, and the second connecting section is arranged in the second hole section. By making the radial dimension of the first connecting section along the sleeve body smaller than the radial dimension of the second connecting section along the sleeve body, and the first connecting section is arranged in the first hole section with a smaller radial dimension of the sleeve body, and the second connecting section is arranged in the second hole section with a larger radial dimension of the sleeve body, the first connecting section and the second connecting section can be respectively matched with the first hole section and the second hole section, so as to better position and limit the gasket, reduce the risk of the gasket rotating or shifting, thereby enhancing the connection strength between the gasket and the sleeve body, which is conducive to enhancing the connection strength between the sleeve body and the mounting part.

[0023] In some embodiments, the first limiting portion is arranged on the side of the sleeve body, and the gasket includes: a gasket body, which is arranged on the end surface; a plurality of second limiting portions, which are arranged at intervals along the circumference of the gasket body at the end of the gasket body away from the axis of the sleeve body, and the second limiting portion extends from the gasket body in a direction away from the axis and bends in a direction toward the other end surface of the sleeve body, and the second limiting portion at least partially abuts against the side surface. By making the second limiting portion extend from the gasket body in a direction away from the axis and bends in a direction toward the other end surface of the sleeve body, and the second limiting portion at least partially abuts against the side surface of the sleeve body, the second limiting portion can cover at least part of the side surface of the sleeve body and cover the outer area of ​​at least part of the connection between the end surface of the sleeve body and the gasket, which can reduce the risk of corrosion of the gasket and the sleeve body caused by impurities such as liquid or dust entering between the end surface of the sleeve body and the gasket, can improve the stability of the connection between the sleeve body and the gasket, reduce the risk of loosening and falling off of the gasket, and help improve the stability of the connection between the sleeve body and the mounting.

[0024] In some embodiments, among the plurality of second limiting parts, each second limiting part is provided with a slot in the area opposite to the side of the sleeve body; the first limiting part includes a plurality of blocks arranged at intervals along the circumference of the sleeve body on the side and adapted one by one to the slots of the plurality of second limiting parts, and the blocks are arranged in the slots. By setting the blocks on the sleeve body in the slots of the second limiting part of the gasket, the blocks can limit the gasket, reduce the risk of the gasket rotating or deviating relative to the sleeve body, and further enhance the connection strength between the gasket and the sleeve body.

[0025] In a third aspect, the present application provides a battery case, which includes a case body and the above-mentioned sleeve assembly, wherein the sleeve assembly is disposed on the case body.

[0026] In a fourth aspect, the present application provides an electrical device, comprising the above-mentioned battery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0028] Figure 1 It is a structural schematic diagram of an embodiment of an electric device provided by the present application;

[0029] Figure 2 is a schematic diagram of the exploded structure of the battery device provided in this application;

[0030] Figure 3 is a structural schematic diagram of a first embodiment of a sleeve assembly provided in the present application;

[0031] Figure 4 is a schematic diagram of the exploded structure of the first embodiment of the sleeve assembly provided by the present application;

[0032] Figure 5 is a structural schematic diagram of a second embodiment of a sleeve assembly provided in the present application;

[0033] Figure 6 yes Figure 5 A schematic cross-sectional view of an embodiment of the invention;

[0034] Figure 7 yes Figure 5 A schematic cross-sectional structure diagram of another embodiment of the part A;

[0035] Figure 8 is a structural schematic diagram of a third embodiment of a sleeve assembly provided in the present application;

[0036] Fig. 9 It is a schematic diagram of the exploded structure of the third embodiment of the sleeve assembly provided in the present application.

[0037] The reference numerals in the specific implementation manner are as follows:

[0038] Vehicle 1000a, battery device 100a, controller 200a, motor 300a, battery cell 10, battery box 20, box body 21, accommodating space 21a, mounting hole 21b, first part 211, second part 212, flange part 213, sleeve assembly 22, sleeve body 221, fixing hole 221a, end face 2211, side face 2212, gasket 222, through hole 222a, gasket body 2221, first limiting portion 23, protrusion 231, mounting column 232, first connecting section 2321, second connecting section 2322, block 233, second limiting portion 24, notch 241, mounting hole 242, first hole section 2421, second hole section 2422, sink 2423, slot 243, seal 25. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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).

[0043] 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.

[0044] 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.

[0045] 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 one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate heat exchange medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0046] With the development of battery technology, battery devices are used in more and more fields, and gradually replace traditional petrochemical energy in areas such as vehicle power. In traditional technology, battery devices are connected to external components such as vehicles by welding. However, welding requires a large space to be reserved at the mounting point for welding operations and to accommodate welding structures, resulting in an increase in the space occupied by the battery device.

[0047] In order to reduce the extra space occupied by the battery device, in the related technology, a sleeve assembly is usually arranged in the mounting hole, and the battery device is fixed by cooperating with the sleeve assembly through the mounting part. The sleeve assembly is a hollow structure that can allow the mounting part to pass through. Compared with the solution of fixing the battery device by welding, there is no need to reserve space for welding operations and accommodating welding structures, making the structure more compact. However, the end face of the sleeve assembly is easily worn by the mounting part, resulting in corrosion of the end face of the sleeve assembly, affecting the connection strength and stability between the sleeve assembly and the mounting part, resulting in reduced mounting strength and mounting stability of the battery device.

[0048] Based on the above considerations, the present application provides a battery device, a sleeve assembly, a battery box and an electrical device. The battery device includes a battery cell and a battery box, the battery box includes at least a box body and a sleeve assembly, the box body is formed with a storage space, the storage space is used to store the battery cell, and the box body is provided with a mounting hole; the sleeve assembly includes a sleeve body and a gasket, the sleeve body is inserted into the mounting hole, the gasket is at least partially provided on one end face of the sleeve body, and the side of the gasket facing away from the end face is used to stop with the mounting member; wherein, one of the sleeve body and the gasket is provided with a first limiting portion, and the other of the sleeve body and the gasket is provided with a second limiting portion adapted to the first limiting portion, and the first limiting portion cooperates with the second limiting portion to fix the gasket on the end face. By inserting the sleeve body into the mounting hole and at least partially arranging the gasket on one end face of the sleeve body, and the side of the gasket facing away from the end face is used to stop with the mounting part, on the one hand, during the installation or disassembly of the battery device, when the mounting part moves relative to the sleeve assembly, the gasket can play a buffering role and block the mounting part from contacting the end face of the sleeve body facing the gasket, which can effectively reduce the risks of wear and corrosion of the sleeve body, so that during the long-term disassembly and installation of the battery device and the long-term use of the battery device, the matching accuracy between the sleeve body and the mounting part is not affected, and the connection strength and stability between the sleeve body and the mounting part can be enhanced, thereby improving the mounting strength and mounting stability of the battery device, and further improving the reliability of the battery device; on the other hand, the gasket can provide additional support for the mounting part, reducing the risks of poor bite between the mounting part and the sleeve body or loosening of the mounting part , and the gasket can also play a role in dispersing stress, which can reduce the damage to the gasket and the sleeve body caused by stress concentration, and can further enhance the connection strength and stability between the sleeve assembly and the mounting part, so that the mounting strength and mounting stability of the battery device are further improved; thirdly, the sleeve body can allow the mounting part to pass through. Compared with the solution of fixing the battery device by welding, there is no need to reserve space for welding operations and accommodating welding structures, so that the structure is more compact and the occupied space of the battery device can be reduced; in addition, the sleeve body and the gasket are connected by the first limiting portion and the second limiting portion, which can not only enhance the connection strength between the sleeve body and the gasket, but also improve the structural strength and stability of the gasket itself, thereby improving the gasket's ability to disperse stress and the gasket's buffering capacity and supporting effect on the mounting part, so that the connection strength and stability between the sleeve assembly and the mounting part are further enhanced.

[0049] The battery device, battery case and electrical equipment disclosed in the embodiments of the present application can be used for electrical equipment using the battery device as a power source or various energy storage systems using the battery device as an energy storage element. Electrical equipment can be, but is not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, for example, game consoles, electric car toys, electric ship toys and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc.

[0050] For the convenience of description, the following embodiments are described by taking an electrical device in an embodiment of the present application as a vehicle 1000a as an example.

[0051] Please refer to Figure 1 The vehicle 1000a may be a pure electric vehicle, a hybrid electric vehicle or an extended-range vehicle, etc. A battery device 100a is disposed inside the vehicle 1000a, and the battery device 100a may be disposed at the bottom of the vehicle 1000a. The battery device 100a may be used to power the vehicle 1000a, for example, the battery device 100a may be used as an operating power source for the vehicle 1000a. The vehicle 1000a may also include a controller 200a and a motor 300a, and the controller 200a is used to control the battery device 100a to power the motor 300a, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000a.

[0052] In some embodiments of the present application, the battery device 100a can not only serve as an operating power source for the vehicle 1000a, but also serve as a driving power source for the vehicle 1000a, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000a.

[0053] In some embodiments, the battery device 100a may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0054] Please refer to Figure 2 The battery device 100a mentioned in the embodiment 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 10, and the plurality of battery cells 10 are connected in series, in parallel or in mixed connection through a busbar.

[0055] In the embodiment of the present application, the battery cell 10 may be a secondary battery. A secondary battery refers to a battery cell 10 that can be continuously used by activating active materials by charging after the battery cell 10 is discharged.

[0056] The battery cell 10 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.

[0057] The battery cell 10 includes an electrode assembly. The electrode assembly is mainly formed by winding or stacking a positive electrode sheet, a negative electrode sheet and a separator, wherein the separator is arranged between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly, the parts of the positive electrode sheet without active materials constitute the positive electrode tabs, and the parts of the negative electrode sheet without active materials constitute the negative electrode tabs. During the charge and discharge process of the battery device 100a, the positive electrode active materials and the negative electrode active materials react with the electrolyte to form a current loop.

[0058] In some embodiments, the battery device 100 a may be a battery module. When there are multiple battery cells 10 , the multiple battery cells 10 are arranged and fixed to form a battery module.

[0059] In some embodiments, the battery device 100 a includes a battery cell 10 and a battery case 20 , in which the battery cell 10 or the battery module is accommodated.

[0060] In some embodiments, the battery box 20 can be used as part of the chassis structure of the vehicle 1000a. For example, part of the battery box 20 can become at least a part of the floor of the vehicle 1000a, or part of the battery box 20 can become at least a part of the cross beam and longitudinal beam of the vehicle 1000a.

[0061] In some embodiments, please refer to Figures 2 to 4 The battery device 100a includes a battery cell 10 and a battery case 20. The battery case 20 at least includes a case body 21 and a sleeve assembly 22. The case body 21 is formed with a accommodating space 21a. The accommodating space 21a is used to accommodate the battery cell 10. The case body 21 is provided with a mounting hole 21b; the sleeve assembly 22 includes a sleeve body 221 and a gasket 222. The sleeve body 221 is inserted into the mounting hole 21b. The gasket 222 is at least partially provided on an end surface 2211 of the sleeve body 221. The side of the gasket 222 facing away from the end surface 2211 is used to stop with the mounting member.

[0062] In some embodiments, the box body 21 is used to provide a storage space 21a for the battery cell 10, and the box body 21 can adopt a variety of structures. In some embodiments, the box body 21 can include a first part 211 and a second part 212, the first part 211 and the second part 212 cover each other, and the first part 211 and the second part 212 jointly define a storage space 21a for accommodating the battery cell 10. The second part 212 can be a hollow structure with one end open, and the first part 211 can be a plate-like structure. The first part 211 covers the open side of the second part 212, so that the first part 211 and the second part 212 jointly define the storage space 21a; the first part 211 and the second part 212 can also be hollow structures with one side open, and the open side of the first part 211 covers the open side of the second part 212. Of course, the box body 21 formed by the first part 211 and the second part 212 can be a variety of shapes, such as a cylinder, a cuboid, etc.

[0063] In some embodiments, the first portion 211 and / or the second portion 212 has a flange portion 213. The mounting hole 21b may be formed on the flange portion 213 of the first portion 211; or, the mounting hole 21b may also be formed on the flange portion 213 of the second portion 212; or, a portion of the mounting hole 21b may be formed on the first portion 211, and another portion may be formed on the flange portion 213 of the second portion 212; or, the mounting hole 21b may also be formed in other areas outside the flange portions 213 of the first portion 211 and the second portion 212.

[0064] In some embodiments, the battery box 20 further includes a carrier (not shown). The carrier can be disposed on the flange portion 213 of the first portion 211 and / or the second portion 212, and / or disposed in other areas outside the flange portion 213, and the mounting hole 21b is formed on the carrier.

[0065] The sleeve body 221 of the sleeve assembly 22 is inserted into the mounting hole 21b. The sleeve assembly 22 is used to cooperate with the mounting part to fix the battery device 100a to an external component. The external component can be an electrical equipment such as a vehicle 1000a, a ship, an airplane, a rocket, or a lifting device for transporting the battery device 100a. The sleeve body 221 is a hollow structure that can allow the mounting part to pass through. Compared with the solution of fixing the battery device 100a by welding, there is no need to reserve space for welding operations and accommodating welding structures, making the structure more compact and able to reduce the occupied space of the battery device 100a.

[0066] In some embodiments, the mounting member may be a screw, a bolt, or a rivet, but is not limited thereto.

[0067] The gasket 222 is at least partially disposed on an end surface 2211 of the sleeve body 221 , and the side of the gasket 222 facing away from the end surface 2211 is a locking surface for abutting against the mounting member. The wear resistance of the gasket 222 is higher than that of the sleeve body 221 .

[0068] By making the wear resistance of the gasket 222 higher than that of the sleeve body 221, the gasket 222 is not easily worn by the mounting part during frequent disassembly, and the risk of corrosion on the side of the gasket 222 facing away from the sleeve body 221 can be reduced. Even if the battery device 100a is frequently disassembled and installed, the matching accuracy between the sleeve assembly 22 and the mounting part will not be affected, and the connection strength and stability between the sleeve assembly 22 and the mounting part can be enhanced. The sleeve assembly 22 can be used as a quick-change structure of the battery device 100a. For example, when the battery device 100a is applied to a new energy vehicle 1000a, when the battery device 100a is low on power, the vehicle 1000a can be extended in terms of range by replacing the battery device 100a.

[0069] In some embodiments, the gasket 222 may be a metal gasket, for example, a carbon steel gasket, a manganese steel gasket, a carbon-manganese steel gasket, a bainite high-strength steel gasket, a chrome-molybdenum steel gasket, or a nickel-chrome-molybdenum steel gasket, but not limited thereto. Metals such as carbon steel gaskets, manganese steel gaskets, carbon-manganese steel gaskets, bainite high-strength steel gaskets, chrome-molybdenum steel gaskets, and nickel-chrome-molybdenum steel all have excellent wear resistance and impact resistance, and can significantly improve the wear resistance and impact resistance of the gasket 222.

[0070] In some embodiments, the gasket 222 may be a non-metallic gasket, such as, but not limited to, a silicon nitride ceramic gasket, a polyimide gasket, or a polyetheretherketone gasket. Silicon nitride ceramic, polyimide, and polyetheretherketone have excellent wear resistance and can significantly improve the wear resistance and impact resistance of the gasket 222.

[0071] In some embodiments, a coating layer is provided on the side of the gasket 222 facing away from the end face 2211. The coating layer can be formed on the side of the gasket 222 facing away from the end face 2211 by hot-dip plating, electroplating, infiltration plating or electrophoresis, but is not limited thereto. The provision of the coating layer can further improve the wear resistance of the side of the gasket 222 facing away from the end face 2211, thereby further reducing the risk of the side of the gasket 222 facing away from the end face 2211 being worn by the mounting part, so that the connection strength and stability between the sleeve assembly 22 and the mounting part will not be affected by the long-term disassembly and installation of the battery device 100a, and the mounting strength and mounting stability of the battery device 100a can be improved. Among them, the coating layer can be a zinc plating layer, a zinc-nickel plating layer or a zinc-magnesium-aluminum plating layer, but is not limited thereto.

[0072] By inserting the sleeve body 221 into the mounting hole 21b, and at least partially disposing the gasket 222 on one end face 2211 of the sleeve body 221, and the side of the gasket 222 facing away from the end face 2211 is used to abut against the mounting part, on the one hand, during the installation or removal of the battery device 100a, when the mounting part moves relative to the sleeve assembly 22, the gasket 222 can play a buffering role and block the mounting part from contacting the end face 2211 of the sleeve body 221 facing the gasket 222, which can effectively reduce the risk of the sleeve body 221 being worn and corroded, so that during the long-term removal and installation of the battery device 100a and the long-term use of the battery device 100a, the matching accuracy between the sleeve body 221 and the mounting part is not affected, and the connection strength and stability between the sleeve body 221 and the mounting part can be enhanced, thereby improving the battery device 100a's mounting strength and mounting stability can be improved, thereby improving the reliability of the battery device 100a; on the other hand, the gasket 222 can provide additional support for the mounting part, reduce the risk of poor engagement between the mounting part and the sleeve body 221 or loosening of the mounting part, and the gasket 222 can also disperse stress, which can reduce damage to the gasket 222 and the sleeve body 221 caused by stress concentration, and can further enhance the connection strength and stability between the sleeve assembly 22 and the mounting part, so that the mounting strength and mounting stability of the battery device 100a are further improved; thirdly, the sleeve body 221 can allow the mounting part to pass through. Compared with the solution of fixing the battery device 100a by welding, there is no need to reserve space for welding operations and accommodating welding structures, which makes the structure more compact and can reduce the occupied space of the battery device 100a.

[0073] In some embodiments, please refer to Figures 3 to 9 One of the sleeve body 221 and the gasket 222 is provided with a first limiting portion 23, and the other of the sleeve body 221 and the gasket 222 is provided with a second limiting portion 24 adapted to the first limiting portion 23. The first limiting portion 23 cooperates with the second limiting portion 24 to fix the gasket 222 on the end surface 2211.

[0074] In some embodiments, the first limiting portion 23 can be arranged on the sleeve body 221, and the second limiting portion 24 can be arranged on the gasket 222. For example, the first limiting portion 23 can be arranged on the end surface 2211 of the sleeve body 221 facing the gasket 222, and the second limiting portion 24 can be arranged on the portion of the gasket 222 arranged on the end surface 2211 of the sleeve body 221; or, the second limiting portion 24 can be arranged on the side surface 2212 where the sleeve body 221 is connected to the end surface 2211, and the second limiting portion 24 can be arranged on the end of the gasket 222 away from the axis of the sleeve body 221.

[0075] In some embodiments, the second limiting portion 24 may be disposed on the sleeve body 221 , and the first limiting portion 23 may be disposed on the gasket 222 .

[0076] In some embodiments, the sleeve assembly 22 may include a first stopper 23 and a second stopper 24; or, the sleeve assembly 22 may include a plurality of first stoppers 23 and a plurality of second stoppers 24, and the number of the first stoppers 23 and the second stoppers 24 is equal, for example, the number of the first stoppers 23 and the second stoppers 24 may be two, three, five, seven, etc., but not limited thereto. The specific number of the first stoppers 23 and the second stoppers 24 may be selected according to parameters such as the radial size of the sleeve body 221 and the radial size of the gasket 222.

[0077] The sleeve body 221 and the gasket 222 are connected by cooperating with the first limiting portion 23 and the second limiting portion 24, which can not only enhance the connection strength between the sleeve body 221 and the gasket 222, but also enhance the structural strength and stability of the gasket 222 itself, thereby enhancing the stress dispersion capability of the gasket 222 and the buffering capacity and supporting effect of the gasket 222 on the mounting part, thereby further enhancing the connection strength and stability between the sleeve assembly 22 and the mounting part.

[0078] In some embodiments, please refer to Figures 3 to 5 The first limiting portion 23 is disposed on the end surface 2211 of the sleeve body 221 , and the second limiting portion 24 is disposed on the gasket 222 .

[0079] The first limiting portion 23 is disposed on the end surface 2211 of the sleeve body 221 facing the gasket 222 , and the second limiting portion 24 is disposed on the gasket 222 and corresponds to the first limiting portion 23 .

[0080] In some embodiments, the sleeve assembly 22 may include a plurality of first limiting portions 23 and a plurality of second limiting portions 24. The plurality of first limiting portions 23 may be arranged at circumferential intervals along the sleeve body 221 on the end surface 2211 of the sleeve body 221 facing the gasket 222. The plurality of second limiting portions 24 may be arranged at circumferential intervals along the sleeve body 221 on the gasket 222.

[0081] By arranging the first limiting portion 23 on the end face 2211 of the sleeve body 221 and the second limiting portion 24 on the gasket 222, the sleeve body 221 and the gasket 222 are connected by cooperating with the first limiting portion 23 and the second limiting portion 24, which can not only enhance the connection strength between the sleeve body 221 and the gasket 222, but also enhance the structural strength and stability of the gasket 222 itself, thereby enhancing the stress dispersing ability of the gasket 222 and the buffering ability and supporting effect of the gasket 222 on the mounting part, thereby further enhancing the connection strength between the sleeve body 221 and the mounting part.

[0082] In some embodiments, please refer to Figure 3 to Figure 4 The first limiting portion 23 includes a plurality of protrusions 231 spaced apart along the circumference of the sleeve body 221 , and the second limiting portion 24 includes a plurality of notches 241 spaced apart along the circumference of the sleeve body 221 , and the protrusions 231 are clamped in the notches 241 .

[0083] After the protrusion 231 is locked in the notch 241 , the surface of the protrusion 231 facing the inner wall of the notch 241 abuts against the inner wall of the notch 241 .

[0084] The protrusion 231 extends from the sleeve body 221 toward the gasket 222. The notch 241 may penetrate the gasket 222 along the axial direction of the sleeve body 221; or the notch 241 may be formed on the side of the gasket 222 facing the sleeve body 221 and does not penetrate the gasket 222 in the axial direction of the sleeve body 221.

[0085] In some embodiments, the protrusion 231 can be integrally formed with the sleeve body 221 , which can not only improve the connection strength and connection stability between the protrusion 231 and the sleeve body 221 , but also enhance the connection strength and connection stability between the gasket 222 and the sleeve body 221 .

[0086] In some embodiments, the gasket 222 may be punched to form the notch 241 ; or, the gasket 222 may be etched to remove a portion of the structure to form the notch 241 .

[0087] In some embodiments, after at least a portion of the gasket 222 is disposed on an end surface 2211 of the sleeve body 221 and the protrusion 231 is clamped in the notch 241, a special welding machine can be used to convexly weld the gasket 222 to the end surface 2211 of the sleeve body 221, so that the gasket 222 can be tightly connected to the sleeve body 221, thereby enhancing the connection strength and stability between the gasket 222 and the sleeve body 221.

[0088] In some embodiments, the size of the protrusion 231 along the axial direction of the sleeve body 221 may be equal to the size of the notch 241 along the axial direction of the sleeve body 221, or the size of the protrusion 231 along the axial direction of the sleeve body 221 may be slightly smaller than the size of the notch 241 along the axial direction of the sleeve body 221; or the size of the protrusion 231 along the axial direction of the sleeve body 221 may be slightly larger than the size of the notch 241 along the axial direction of the sleeve body 221.

[0089] In some embodiments, the fixing hole 221a of the sleeve body 221 for inserting the mounting hole 21b is cylindrical. The shape of the cross-sectional profile of the sleeve body 221 along the radial direction of the fixing hole 221a is the same as the shape of the cross-sectional profile of the mounting hole 21b along the radial direction of the fixing hole 221a. The cross-sectional profile of the sleeve body 221 along the radial direction of the fixing hole 221a and the cross-sectional profile of the mounting hole 21b along the radial direction of the fixing hole 221a can have a variety of shapes, for example, circular, square, rectangular, polygonal, etc., but not limited thereto. The embodiment of the present application is described by taking the shape of the cross-sectional profile of the sleeve body 221 along the radial direction of the fixing hole 221a as a circle, that is, the outer shape of the sleeve body 221 is cylindrical as an example.

[0090] In some embodiments, the gasket 222 has a through hole 222a that matches the fixing hole 221a of the sleeve body 221, and the through hole 222a is circular. The shape of the cross-sectional profile of the gasket 222 along the radial direction of the through hole 222a can be the same as the shape of the cross-sectional profile of the sleeve body 221 along the radial direction of the fixing hole 221a. Of course, the shape of the cross-sectional profile of the gasket 222 along the radial direction of the through hole 222a can also be different from the shape of the cross-sectional profile of the sleeve body 221 along the radial direction of the fixing hole 221a.

[0091] In some embodiments, the protrusion 231 includes an arc-shaped protrusion, and the notch 241 includes an arc-shaped notch. The centers of the arc-shaped protrusion and the arc-shaped notch are located on the axis of the sleeve body 221, and the outer surface of the arc-shaped protrusion can be coplanar with the side 2212 of the sleeve body 221. Such a configuration can not only improve the adaptability between the gasket 222 and the sleeve body 221, but also improve the aesthetics of the sleeve assembly 22.

[0092] The arc length of the arc-shaped protrusion along the circumference of the sleeve body 221 can be 4mm-9mm. For example, the arc length of the arc-shaped protrusion along the circumference of the sleeve body 221 can be 4mm, 4.2mm, 4.4mm, 4.55mm, 4.8mm, 5mm, 5.5mm, 5.7mm, 6mm, 6.35mm, 6.5mm, 6.88mm, 7mm, 7.15mm, 7.53mm, 7.77mm, 8mm, 8.25mm, 8.5mm, 8.88mm, 9mm, etc., but not limited thereto. Preferably, the arc length of the arc-shaped protrusion along the circumference of the sleeve body 221 is 7mm. The size of the arc-shaped protrusion along the radial direction of the sleeve body 221 can be 0.5mm-1.5mm, for example, the size of the arc-shaped protrusion along the radial direction of the sleeve body 221 can be 0.5mm, 0.55mm, 0.6mm, 0.8mm, 1mm, 1.1mm, 1.2mm, 1.35mm, 1.5mm, etc., but not limited thereto. Preferably, the size of the arc-shaped protrusion along the radial direction of the sleeve body 221 is 1mm. The size of the arc-shaped protrusion along the axial direction of the sleeve body 221 can be 0.5mm-1.5mm, for example, the size of the arc-shaped protrusion along the axial direction of the sleeve body 221 can be 0.5mm, 0.6mm, 0.65mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.15mm, 1.2mm, 1.3mm, 1.45mm, 1.5mm, etc., but not limited thereto. Preferably, the arc-shaped protrusion has an axial dimension of 1 mm along the sleeve body 221. The specific values ​​of the arc length, the first dimension and the second dimension of the arc-shaped protrusion can be selected according to the area of ​​the end surface 2211 of the sleeve body 221, the thickness of the gasket 222 along the axial direction of the sleeve body 221, etc.

[0093] By providing a plurality of protrusions 231 spaced along the circumference of the sleeve body 221 on the end surface 2211 of the sleeve body 221, and providing a plurality of notches 241 spaced along the circumference of the sleeve body 221 on the gasket 222, and clamping the protrusions 231 in the notches 241, on one hand, the protrusions 231 and the notches 241 can play a role in positioning the gasket 222, so that the gasket 222 can be more quickly and accurately set on the end surface 2211 of the sleeve body 221 1, the positioning effect and efficiency of the gasket 222 can be improved, thereby effectively improving the connection efficiency between the gasket 222 and the sleeve body 221; on the other hand, the protrusion 231 is clamped in the notch 241, so that the protrusion 231 can limit the gasket 222, thereby reducing the risk of the gasket 222 rotating or offsetting relative to the sleeve body 221, and further enhancing the connection strength and stability between the gasket 222 and the sleeve body 221.

[0094] In some embodiments, please refer to Figure 3 to Figure 4 The protrusion 231 is disposed on a side of the end surface 2211 of the sleeve body 221 away from the axis of the sleeve body 221 , and is spaced apart from an edge of the end surface 2211 close to the axis.

[0095] The sleeve body 221 is formed with a fixing hole 221a for inserting the mounting hole 21b, and the center of the fixing hole 221a can be located on the axis of the sleeve body 221. The protrusion 231 is arranged on the side of the end face 2211 of the sleeve body 221 away from the fixing hole 221a, and is spaced from the edge of the end face 2211 close to the fixing hole 221a. The gasket 222 is formed with a through hole 222a for the mounting hole 21b to pass through, and the through hole 222a can be coaxially arranged with the fixing hole 221a of the sleeve body 221. The notch 241 is arranged on the side of the gasket 222 away from the through hole 222a, and is spaced from the edge of the gasket 222 close to the through hole 222a.

[0096] By arranging the protrusion 231 on the side of the end face 2211 of the sleeve body 221 away from the axis of the sleeve body 221, and spacing it from the edge of the end face 2211 close to the axis, the risk of the end of the protrusion 231 away from the sleeve body 221 being worn by the mounting part due to the contact between the mounting part and the end of the protrusion 231 away from the sleeve body 221 can be reduced. This ensures that the matching accuracy between the sleeve body 221 and the mounting part is not affected during the long-term disassembly and installation of the battery device 100a and the long-term use of the battery device 100a, thereby enhancing the connection strength and stability between the sleeve body 221 and the mounting part.

[0097] In some embodiments, the first limiting portion 23 includes a plurality of recessed portions (not shown) disposed on the end surface 2211 of the sleeve body 221 and spaced along the circumference of the sleeve body 221; the second limiting portion 24 includes a plurality of extension portions (not shown) disposed on the side of the gasket 222 facing the sleeve body 221 and spaced along the circumference of the sleeve body 221. The recessed portions are sunken in a direction away from the gasket 222, and the extension portions extend in a direction toward the sleeve body 221 and are embedded in the recessed portions, thereby enhancing the connection strength and stability between the sleeve body 221 and the gasket 222.

[0098] In some embodiments, please refer to Figure 5 The first limiting portion 23 includes a plurality of mounting posts 232 spaced apart along the circumference of the sleeve body 221 , and the second limiting portion 24 includes a plurality of mounting holes 242 spaced apart along the circumference of the sleeve body 221 , and the mounting posts 232 are disposed in the mounting holes 242 .

[0099] The mounting post 232 extends from the sleeve body 221 toward the gasket 222. The mounting hole 242 may penetrate the gasket 222 along the axial direction of the sleeve body 221.

[0100] In some embodiments, the mounting post 232 may be integrally formed with the sleeve body 221 , which can not only enhance the connection strength and stability between the mounting post 232 and the sleeve body 221 , but also enhance the connection strength and stability between the gasket 222 and the sleeve body 221 .

[0101] In some embodiments, the gasket 222 may be punched to form the mounting hole 242 ; the gasket 222 may also be etched to remove a portion of the structure to form the mounting hole 242 .

[0102] By providing a plurality of mounting posts 232 spaced apart along the circumference of the sleeve body 221 on the end face 2211 of the sleeve body 221, providing a plurality of mounting holes 242 spaced apart along the circumference on the gasket 222, and arranging the mounting posts 232 in the mounting holes 242, on the one hand, the arrangement of the mounting posts 232 and the mounting holes 242 can play a role in positioning the gasket 222, so that the gasket 222 can be arranged at a specified position on the end face 2211 of the sleeve body 221 more quickly and accurately, which can improve the positioning effect and positioning efficiency of the gasket 222, thereby effectively improving the connection efficiency between the gasket 222 and the sleeve body 221; on the other hand, arranging the mounting posts 232 in the mounting holes 242 can increase the friction between the gasket 222 and the end face 2211 of the sleeve body 221, thereby reducing the risk of the gasket 222 rotating or offsetting relative to the sleeve body 221, thereby further enhancing the connection strength between the gasket 222 and the sleeve body 221.

[0103] In some embodiments, please refer to Figure 6 to Figure 7 The mounting hole 242 includes a first hole section 2421 and a second hole section 2422 which are connected to each other. The first hole section 2421 is located on a side of the second hole section 2422 close to the end surface 2211, and the radial dimension of the first hole section 2421 along the sleeve body 221 is smaller than the radial dimension of the second hole section 2422 along the sleeve body 221.

[0104] The first hole section 2421 and the second hole section 2422 are coaxially arranged.

[0105] In some embodiments, the axial dimension of the first hole segment 2421 along the sleeve body 221 may be greater than the axial dimension of the second hole segment 2422 along the sleeve body 221; or, the axial dimension of the first hole segment 2421 along the sleeve body 221 may be smaller than the axial dimension of the second hole segment 2422 along the axial direction; or, the axial dimension of the first hole segment 2421 along the sleeve body 221 may be equal to the axial dimension of the second hole segment 2422 along the axial direction.

[0106] By making the radial dimension of the first hole section 2421 along the sleeve body 221 smaller than the radial dimension of the second hole section 2422 along the sleeve body 221, on the one hand, the radial dimension of the first hole section 2421 along the sleeve body 221 is smaller, which can better guide the insertion of the mounting post 232 and play a better limiting role for the mounting post 232, so that the mounting post 232 can better position the gasket 222; on the other hand, the radial dimension of the second hole section 2422 along the sleeve body 221 is larger, which can provide sufficient space for the mounting post 232 to continue to be inserted, so that the mounting post 232 can be quickly inserted into the second hole section 2422 after passing through the first hole section 2421, which can effectively reduce the difficulty of inserting the mounting hole 242, thereby improving the installation efficiency between the gasket 222 and the sleeve body 221.

[0107] In some embodiments, please refer to Figure 6 The mounting post 232 extends from the first hole section 2421 to the outside of a side of the second hole section 2422 facing away from the first hole section 2421 .

[0108] In some embodiments, the axial dimension of the portion of the mounting post 232 extending to the side of the second hole segment 2422 away from the first hole segment 2421 can be 1mm-3mm, that is, the difference between the axial dimension of the mounting post 232 and the axial dimension of the gasket 222 can be 1mm, 1.2mm, 1.35mm, 1.5mm, 1.7mm, 1.88mm, 2mm, 2.2mm, 2.5mm, 2.65mm, 2.8mm, 3mm, etc., but is not limited to this.

[0109] In some embodiments, a sink 2423 is formed at the bottom of the second hole segment 2422 , and the plane where the sink 2423 is located may be parallel to the mouth of the first hole segment 2421 close to the second hole segment 2422 . After the mounting post 232 extends from the first hole section 2421 to the side of the second hole section 2422 away from the first hole section 2421, the side of the mounting post 232 away from the end surface 2211 of the sleeve body 221 can be pressed, so that the portion of the mounting post 232 extending to the side of the second hole section 2422 away from the first hole section 2421 is pressed into the second hole section 2422 and forms a shape similar to a mushroom head. The radial surface of the portion of the mounting post 232 disposed in the second hole section 2422 after being pressed can be fitted with the side wall of the second hole section 2422 along the second hole section 2422. The side of the portion of the mounting post 232 disposed in the second hole section 2422 close to the first hole section 2421 after being pressed can be fitted with the sink 2423. Among them, the side wall of the second hole section 2422 and the sink 2423 can both serve as the inner wall of the second hole section 2422.

[0110] In some embodiments, after the side of the mounting column 232 facing away from the end face 2211 of the sleeve body 221 is pierced, a special welding machine can be used to convexly weld the gasket 222 to the end face 2211 of the sleeve body 221, so that the gasket 222 can be tightly connected to the sleeve body 221, which can further enhance the connection strength between the gasket 222 and the sleeve body 221.

[0111] By extending the mounting post 232 from the first hole segment 2421 to the side of the second hole segment 2422 away from the first hole segment 2421, it is convenient to press the portion of the mounting post 232 extending to the side of the second hole segment 2422 away from the first hole segment 2421, so that the portion of the mounting post 232 extending to the side of the second hole segment 2422 away from the first hole segment 2421 is pressed into the second hole segment 2422 and fits against the inner wall of the second hole segment 2422, thereby enhancing the connection strength between the gasket 222 and the sleeve body 221.

[0112] In some embodiments, please refer to Figure 7 The mounting column 232 includes a first connecting section 2321 connected to the end face 2211 and a second connecting section 2322 connected to one end of the first connecting section 2321 away from the end face 2211, and the radial dimension of the first connecting section 2321 along the sleeve body 221 is smaller than the radial dimension of the second connecting section 2322 along the sleeve body 221; wherein the first connecting section 2321 is disposed in the first hole section 2421, and the second connecting section 2322 is disposed in the second hole section 2422.

[0113] The second connecting section 2322 can be arranged in the second hole section 2422 by piercing. The radial surface of the second connecting section 2322 along the second hole section 2422 can be fitted with the side wall of the second hole section 2422, and the side of the second connecting section 2322 close to the first hole section 2421 can be fitted with the sink 2423.

[0114] By making the radial dimension of the first connecting section 2321 along the sleeve body 221 smaller than the radial dimension of the second connecting section 2322 along the sleeve body 221, and the first connecting section 2321 is arranged in the first hole section 2421 with a smaller radial dimension of the sleeve body 221, and the second connecting section 2322 is arranged in the second hole section 2422 with a larger radial dimension of the sleeve body 221, the first connecting section 2321 and the second connecting section 2322 can be adapted to the first hole section 2421 and the second hole section 2422 respectively, so as to better position and limit the gasket 222, reduce the risk of rotation or displacement of the gasket 222, thereby enhancing the connection strength between the gasket 222 and the sleeve body 221, which is beneficial to enhancing the connection strength between the sleeve body 221 and the mounting part.

[0115] In some embodiments, please refer to Figure 1 and Figure 5 , the positive projection of the gasket 222 toward the sleeve body 221 completely falls on the end surface 2211.

[0116] In which, the radial size of the gasket 222 along the sleeve body 221 can be smaller than the radial size of the end face 2211 of the sleeve body 221 along the sleeve body 221; or, the radial size of the gasket 222 along the sleeve body 221 can also be equal to the radial size of the end face 2211 of the sleeve body 221 along the sleeve body 221.

[0117] By making the positive projection of the gasket 222 toward the sleeve body 221 completely fall on the end surface 2211, the volume of the gasket 222 can be reduced while enhancing the connection strength and stability between the sleeve assembly 22 and the mounting component, making the structure more compact, thereby reducing the space occupied by the battery device 100a.

[0118] In some embodiments, please refer to Figures 8 to 9 The first limiting portion 23 is arranged on the side surface 2212 of the sleeve body 221, and the gasket 222 includes a gasket body 2221 and a plurality of second limiting portions 24, and the gasket body 2221 is arranged on the end surface 2211; the plurality of second limiting portions 24 are arranged at intervals along the circumference of the gasket body 2221 at the end of the gasket body 2221 away from the axis of the sleeve body 221, and the second limiting portion 24 extends from the gasket body 2221 in a direction away from the axis and is bent in the direction of the other end surface of the sleeve body 221, and the second limiting portion 24 at least partially abuts against the side surface 2212 of the sleeve body 221.

[0119] In some embodiments, multiple second limiting portions 24 can be integrally formed on the gasket body 2221, which can not only improve the connection strength and stability between the second limiting portions 24 and the gasket body 2221, but also enhance the connection strength and stability between the gasket 222 and the sleeve body 221.

[0120] In some embodiments, a plurality of second limiting portions 24 may be arranged at equal intervals at the end of the gasket body 2221 away from the axis of the sleeve body 221; or, a plurality of second limiting portions 24 may be arranged at equal intervals at the end of the gasket body 2221 away from the axis of the sleeve body 221.

[0121] In some embodiments, at least a portion of the second limiting portion 24 may abut against the side surface 2212 of the sleeve body 221 ; alternatively, the second limiting portion 24 may also be spaced apart from the side surface 2212 of the sleeve body 221 .

[0122] By extending the second limiting portion 24 from the gasket body 2221 in a direction away from the axis and bending in the direction of the other end face of the sleeve body 221, and the second limiting portion 24 at least partially abutting against the side face 2212 of the sleeve body 221, the second limiting portion 24 can cover at least part of the side face 2212 of the sleeve body 221, and cover the external area of ​​at least part of the connection between the end face 2211 of the sleeve body 221 and the gasket 222, which can reduce the risk of corrosion of the gasket 222 and the sleeve body 221 due to the entry of impurities such as liquid or dust between the end face 2211 of the sleeve body 221 and the gasket 222, and can improve the stability of the connection between the sleeve body 221 and the gasket 222, reduce the risk of the gasket 222 loosening, falling off, etc., and help to improve the stability of the connection between the sleeve body 221 and the mounting part.

[0123] In some embodiments, among the multiple second limiting portions 24, each second limiting portion 24 is provided with a slot 243 in the area opposite to the side 2212 of the sleeve body 221; the first limiting portion 23 includes a plurality of blocks 233 arranged at circumferential intervals along the side 2212 of the sleeve body 221, and adapted one by one to the slots 243 of the multiple second limiting portions 24, and the blocks 233 are clamped in the slots 243.

[0124] The block 233 is disposed on the side surface 2212 of the sleeve body 221 and extends from the side surface 2212 of the sleeve body 221 toward the axial direction away from the sleeve body 221. The slot 243 may penetrate the second position-limiting portion 24 along the radial direction of the sleeve body 221; or the slot 243 may be formed on the side of the second position-limiting portion 24 facing the side surface 2212 of the sleeve body 221.

[0125] In some embodiments, the block 233 can be integrally formed on the side 2212 of the sleeve body 221 , which can not only improve the connection strength and stability between the block 233 and the sleeve body 221 , but also enhance the connection strength and stability between the gasket 222 and the sleeve body 221 .

[0126] In some embodiments, the second limiting portion 24 may be punched to form the slot 243 ; the second limiting portion 24 may also be etched to remove a portion of the structure to form the slot 243 .

[0127] In some embodiments, after the block 233 on the sleeve body 221 is clamped in the slot 243 of the second limiting portion 24 of the gasket 222, a special welding machine can be used to convexly weld the gasket body 2221 to the end face 2211 of the sleeve body 221, so that the gasket body 2221 can be tightly connected to the sleeve body 221, thereby further enhancing the connection strength between the gasket 222 and the sleeve body 221.

[0128] By clamping the block 233 on the sleeve body 221 into the slot 243 of the second limiting portion 24 of the gasket 222, the block 233 can limit the gasket 222, thereby reducing the risk of the gasket 222 rotating or shifting relative to the sleeve body 221, thereby further enhancing the connection strength between the gasket 222 and the sleeve body 221.

[0129] In some embodiments, the orthographic projection of the gasket body 2221 toward the sleeve body 221 covers at least the inner area of ​​the end surface 2211 of the sleeve body 221 .

[0130] The inner area of ​​the end surface 2211 is the area of ​​the end surface 2211 of the sleeve body 221 facing the gasket 222 and close to the mounting component, and the inner area of ​​the end surface 2211 is arranged around the mounting component.

[0131] In some embodiments, the orthographic projection of the gasket body 2221 toward the sleeve body 221 can cover the inner area of ​​the end surface 2211 of the sleeve body 221, and a portion of the outer area of ​​the end surface 2211 of the sleeve body 221 is exposed outside the gasket 222, and the other portion is covered by the second limiting portion 24. The outer area of ​​the end surface 2211 is the area of ​​the end surface 2211 of the sleeve body 221 facing the gasket 222 away from the mounting part, and the outer area of ​​the end surface 2211 is arranged around the inner area of ​​the end surface 2211.

[0132] In some embodiments, the orthographic projection of the gasket body 2221 toward the sleeve body 221 may completely cover the end surface 2211 of the sleeve body 221 .

[0133] By making the gasket body 2221's direct projection toward the sleeve body 221 cover at least the inner area of ​​the end face 2211 of the sleeve body 221, the gasket body 2221 is located in the stop area of ​​the mounting part and stops with the gasket body 2221, thereby reducing the risk of the end face 2211 of the sleeve body 221 being worn by the mounting part.

[0134] In some embodiments, please refer to Figures 8 to 9 A sealing member 25 is provided between the end surface 2211 and the gasket 222 .

[0135] Among them, the seal 25 can be a double-sided tape, a polyurethane sealing adhesive, an acrylic adhesive, a rubber adhesive or a silicone adhesive, but is not limited thereto. The double-sided tape can be a 3M4008 double-sided tape, which is a double-sided tape with a polyurethane foam substrate, and has the characteristics of high tensile force, high shear strength, high temperature resistance, etc., and will not fail due to the influence of heating and vibration of the battery device 100a. Polyurethane sealing adhesives, acrylic adhesives and rubber adhesives have the advantages of good flexibility and high bonding strength, and are suitable for occasions with greater pressure and impact, and can adapt to the particularity of the battery device 100a working in a vibration environment. Silicone resin adhesives have excellent heat and cold resistance, and are suitable for environments with large temperature changes, and can adapt to the particularity of the battery device 100a working in an environment with changing temperatures.

[0136] By arranging a sealing member 25 between the end face 2211 and the gasket 222, on the one hand, the sealing member 25 can further enhance the connection strength between the gasket 222 and the sleeve body 221 on the basis of the gasket 222 and the sleeve body 221 being connected through the first limiting portion 23 and the second limiting portion 24; on the other hand, the sealing member 25 can seal the gap between the end face 2211 and the gasket 222, which can reduce the risk of corrosion of the gasket 222 and the sleeve body 221 due to the entry of impurities such as liquid or dust into the space between the end face 2211 and the gasket 222, and can improve the stability of the connection between the sleeve body 221 and the gasket 222, reduce the risk of loosening or falling off of the gasket 222, and help to improve the stability of the connection between the sleeve body 221 and the mounting member; thirdly, the sealing member 25 can absorb and alleviate the vibration and impact of the sleeve assembly 22 to a certain extent, and can further improve the stability of the connection between the sleeve body 221 and the gasket 222.

[0137] In some embodiments, Figure 3 to Figure 4 As shown, the sleeve assembly 22 includes a sleeve body 221 and a gasket 222, the sleeve body 221 is inserted into the mounting hole 21b, the gasket 222 is at least partially arranged on an end face 2211 of the sleeve body 221, and the side of the gasket 222 facing away from the end face 2211 is used to stop with the mounting part; wherein, the end face 2211 is provided with a plurality of protrusions 231 arranged at intervals along the circumference of the sleeve body 221, and the gasket 222 is provided with a plurality of notches 241 arranged at intervals along the circumference of the sleeve body 221, and the protrusions 231 are clamped in the notches 241; the positive projection of the gasket 222 toward the sleeve body 221 completely falls on the end face 2211; a sealing member 25 is provided between the end face 2211 and the gasket 222.

[0138] In some embodiments, Figures 5 to 7As shown, the sleeve assembly 22 includes a sleeve body 221 and a gasket 222, the sleeve body 221 is inserted into the mounting hole 21b, the gasket 222 is at least partially arranged on an end face 2211 of the sleeve body 221, and the side of the gasket 222 facing away from the end face 2211 is used to stop with the mounting member; wherein, a plurality of mounting posts 232 arranged at intervals along the circumference of the sleeve body 221 are provided on the end face 2211, and a plurality of mounting holes 242 arranged at intervals along the circumference of the sleeve body 221 are provided on the gasket 222, and the mounting posts 232 are arranged in the mounting holes 242; the mounting holes 242 include a first hole section 2421 and a second hole section 2422 arranged in communication with each other, the first hole section 2421 is located on a side of the second hole section 2422 close to the end face 2211, and the first The radial dimension of the hole section 2421 along the sleeve body 221 is smaller than the radial dimension of the second hole section 2422 along the sleeve body 221; the mounting column 232 includes a first connecting section 2321 connected to the end face 2211 and a second connecting section 2322 connected to one end of the first connecting section 2321 away from the end face 2211, the radial dimension of the first connecting section 2321 along the sleeve body 221 is smaller than the radial dimension of the second connecting section 2322 along the sleeve body 221; the first connecting section 2321 is arranged in the first hole section 2421, and the second connecting section 2322 is arranged in the second hole section 2422; the positive projection of the gasket 222 toward the sleeve body 221 completely falls on the end face 2211; a sealing member 25 is arranged between the end face 2211 and the gasket 222.

[0139] In some embodiments, Figures 8 to 9As shown, the sleeve assembly 22 includes a sleeve body 221 and a gasket 222, the sleeve body 221 is inserted into the mounting hole 21b, the gasket 222 is at least partially arranged on an end face 2211 of the sleeve body 221, and the side of the gasket 222 facing away from the end face 2211 is used to stop with the mounting member; wherein, the first limiting portion 23 is arranged on the side face 2212 of the sleeve body 221, the gasket 222 includes a gasket body 2221 and a plurality of second limiting portions 24, the gasket body 2221 is arranged on the end face 2211; the plurality of second limiting portions 24 are arranged at intervals along the circumference of the gasket body 2221 at the end of the gasket body 2221 away from the axis of the sleeve body 221, and the second limiting portions 24 are arranged from the gasket body 2221 toward It extends in a direction away from the axis and bends in a direction toward the other end face of the sleeve body 221; among the multiple second limiting portions 24, each second limiting portion 24 is provided with a slot 243 in the area opposite to the side face 2212 of the sleeve body 221; the first limiting portion 23 includes a plurality of blocks 233 arranged at intervals along the circumference of the sleeve body 221 on the side face 2212 of the sleeve body 221, and adapted one by one to the slots 243 of the multiple second limiting portions 24, and the blocks 233 are clamped in the slots 243; the positive projection of the gasket body 2221 toward the sleeve body 221 at least covers the inner area of ​​the end face 2211 of the sleeve body 221; a sealing member 25 is provided between the end face 2211 and the sleeve body 221.

[0140] The present application further provides a sleeve assembly. The structure of the sleeve assembly can refer to the sleeve assembly 22 in the above embodiment, and the sleeve assembly 22 can be used in the battery device 100a.

[0141] The present application further provides a battery box. The structure of the battery box can refer to the battery box 20 in the above embodiment. The battery box 20 includes a box body 21 and a sleeve assembly 22 in any of the above embodiments.

[0142] According to some embodiments of the present application, the battery device 100a can be used on electrical equipment. By inserting the sleeve body 221 into the mounting hole 21b, and at least partially setting the gasket 222 on one end face 2211 of the sleeve body 221, and the side of the gasket 222 facing away from the end face 2211 is used to stop against the mounting part, on the one hand, during the installation or removal of the battery device 100a, when the mounting part moves relative to the sleeve assembly 22, the gasket 222 can play a buffering role and prevent the mounting part from contacting the end face 2211 of the sleeve body 221 facing the gasket 222, which can effectively reduce the sleeve body 221 from being worn, corroded, etc. The risk is eliminated, so that during the long-term disassembly and installation of the battery device 100a and the long-term use of the battery device 100a, the matching accuracy between the sleeve body 221 and the mounting part is not affected, and the connection strength and stability between the sleeve body 221 and the mounting part can be enhanced, thereby improving the mounting strength and mounting stability of the battery device 100a, and further improving the reliability of the battery device 100a; on the other hand, the gasket 222 can provide additional support for the mounting part, reducing the risk of poor bite or hanging between the mounting part and the sleeve body 221. The risk of loosening of the mounting parts is eliminated, and the gasket 222 can also disperse the stress, which can reduce the damage of the gasket 222 and the sleeve body 221 caused by stress concentration, and can further enhance the connection strength and stability between the sleeve assembly 22 and the mounting part, so that the mounting strength and mounting stability of the battery device 100a are further improved; thirdly, the sleeve body 221 can allow the mounting part to pass through, and compared with the solution of fixing the battery device 100a by welding, there is no need to reserve space for welding operations and accommodating welding structures, so that the structure The structure is more compact and can reduce the space occupied by the battery device 100a; in addition, the sleeve body 221 and the gasket 222 are connected by the first limiting portion 23 and the second limiting portion 24, which can not only enhance the connection strength between the sleeve body 221 and the gasket 222, but also enhance the structural strength and stability of the gasket 222 itself, thereby enhancing the ability of the gasket 222 to disperse stress and the buffering capacity and supporting effect of the gasket 222 on the mounting part, so that the connection strength and stability between the sleeve assembly 22 and the mounting part are further enhanced.

[0143] 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 replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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: The battery device comprises a battery cell and a battery box, wherein the battery box at least comprises: A box body is formed with a receiving space, the receiving space is used to receive the battery monomer, and a mounting hole is provided on the box body; A sleeve assembly includes a sleeve body and a gasket, wherein the sleeve body is inserted into the mounting hole, and the gasket is at least partially arranged on an end face of the sleeve body, and the side of the gasket facing away from the end face is used to stop with the mounting part; wherein, one of the sleeve body and the gasket is provided with a first limiting portion, and the other of the sleeve body and the gasket is provided with a second limiting portion adapted to the first limiting portion, and the first limiting portion cooperates with the second limiting portion to fix the gasket on the end face.

2. The battery device according to claim 1, characterized in that: The first limiting portion is arranged on the end surface, and the second limiting portion is arranged on the gasket.

3. The battery device according to claim 2, characterized in that: The first limiting portion includes a plurality of protrusions spaced apart along the circumference of the sleeve body, and the second limiting portion includes a plurality of notches spaced apart along the circumference, wherein the protrusions are clamped in the notches.

4. The battery device according to claim 3, characterized in that: The protrusion is arranged on a side of the end surface away from the axis of the sleeve body, and is spaced apart from an edge of the end surface close to the axis.

5. The battery device according to claim 2, characterized in that: The first limiting portion includes a plurality of mounting posts spaced apart along the circumference of the sleeve body, and the second limiting portion includes a plurality of mounting holes spaced apart along the circumference, wherein the mounting posts are disposed in the mounting holes.

6. The battery device according to claim 5, characterized in that: The mounting hole includes a first hole segment and a second hole segment which are connected to each other, the first hole segment is located on a side of the second hole segment close to the end surface, and a radial dimension of the first hole segment along the sleeve body is smaller than a radial dimension of the second hole segment along the sleeve body.

7. The battery device according to claim 6, characterized in that: The mounting column extends from the first hole section to the outside of a side of the second hole section facing away from the first hole section.

8. The battery device according to claim 6, characterized in that: The mounting column comprises a first connecting section connected to the end surface and a second connecting section connected to an end of the first connecting section away from the end surface, wherein a radial dimension of the first connecting section along the sleeve body is smaller than a radial dimension of the second connecting section along the sleeve body; Wherein, the first connecting section is arranged in the first hole section, and the second connecting section is arranged in the second hole section.

9. The battery device according to claim 2, characterized in that: The orthographic projection of the gasket toward the sleeve body completely falls on the end surface.

10. The battery device according to claim 1, characterized in that: The first limiting portion is arranged on the side of the sleeve body, and the gasket comprises: A gasket body, disposed on the end surface; A plurality of second limiting portions are arranged at circumferential intervals along the gasket body at the end of the gasket body away from the axis of the sleeve body, and the second limiting portions extend from the gasket body in a direction away from the axis and bend toward the other end face of the sleeve body, and the second limiting portions at least partially abut against the side surface.

11. The battery device according to claim 10, characterized in that: Among the multiple second limiting portions, each of the second limiting portions is provided with a slot in the area opposite to the side surface of the sleeve body; the first limiting portion includes a plurality of blocks which are arranged on the side surface at intervals along the circumference of the sleeve body and are adapted one by one to the slots of the multiple second limiting portions, and the blocks are clamped in the slots.

12. The battery device according to claim 10, characterized in that: The orthographic projection of the gasket body toward the sleeve body at least covers the inner area of ​​the end surface.

13. The battery device according to any one of claims 1 to 12, characterized in that: A sealing member is provided between the end surface and the gasket.

14. A sleeve assembly, characterized in that: The sleeve assembly comprises: The sleeve body is used to be inserted into the mounting hole of the box body of the battery box; A gasket is at least partially arranged on an end face of the sleeve body, and the side of the gasket facing away from the end face is used to abut against the mounting part; wherein, one of the sleeve body and the gasket is provided with a first limiting portion, and the other of the sleeve body and the gasket is provided with a second limiting portion adapted to the first limiting portion, and the first limiting portion cooperates with the second limiting portion to fix the gasket on the end face.

15. The sleeve assembly according to claim 14, characterized in that The first limiting portion is arranged on the end surface, and the second limiting portion is arranged on the gasket.

16. The sleeve assembly according to claim 15, characterized in that The first limiting portion includes a plurality of protrusions spaced apart along the circumference of the sleeve body, and the second limiting portion includes a plurality of notches spaced apart along the circumference, wherein the protrusions are clamped in the notches.

17. The sleeve assembly according to claim 15, characterized in that The first limiting portion includes a plurality of mounting posts spaced apart along the circumference of the sleeve body, and the second limiting portion includes a plurality of mounting holes spaced apart along the circumference, wherein the mounting posts are disposed in the mounting holes.

18. The sleeve assembly according to claim 17, characterized in that The mounting hole includes a first hole segment and a second hole segment which are connected to each other, the first hole segment is located on a side of the second hole segment close to the end surface, and a radial dimension of the first hole segment along the sleeve body is smaller than a radial dimension of the second hole segment along the sleeve body.

19. The sleeve assembly according to claim 18, characterized in that The mounting column comprises a first connecting section connected to the end surface and a second connecting section connected to an end of the first connecting section away from the end surface, wherein a radial dimension of the first connecting section along the sleeve body is smaller than a radial dimension of the second connecting section along the sleeve body; Wherein, the first connecting section is arranged in the first hole section, and the second connecting section is arranged in the second hole section.

20. The sleeve assembly according to claim 14, characterized in that The first limiting portion is arranged on the side of the sleeve body, and the gasket comprises: A gasket body, disposed on the end surface; A plurality of second limiting portions are arranged at circumferential intervals along the gasket body at the end of the gasket body away from the axis of the sleeve body, and the second limiting portions extend from the gasket body in a direction away from the axis and bend toward the other end face of the sleeve body, and the second limiting portions at least partially abut against the side surface.

21. The sleeve assembly according to claim 20, characterized in that Among the multiple second limiting portions, each of the second limiting portions is provided with a slot in the area opposite to the side surface of the sleeve body; the first limiting portion includes a plurality of blocks which are arranged on the side surface at intervals along the circumference of the sleeve body and are adapted one by one to the slots of the multiple second limiting portions, and the blocks are clamped in the slots.

22. A battery box, characterized in that: The battery box includes a box body and a sleeve assembly as described in any one of claims 14 to 21, and the sleeve assembly is arranged on the box body.

23. An electrical equipment, characterized in that: Comprising the battery device according to any one of claims 1 to 13.

Images