Nut, connection structure, and vehicle

Abstract

Provided are a nut (10), a connection structure (100), and a vehicle (1000). The nut (10) comprises a body part (1) having a through hole (11), wherein an internal thread (12) is formed on at least a portion of the through hole (11), and in the axial direction of the through hole (11), a plurality of annular seals (2) are provided on the body part (1).

Description

Nuts, connecting structures and vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number: 202322373635.3, application date: August 31, 2023 and application number: 202322460668.1, application date: September 8, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the technical field of connection structures, and in particular to a nut, a connection structure and a vehicle. Background Art

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become a crucial component of this sustainable development. For electric vehicles, connection and sealing technology are crucial factors in their development. When the chemical tank is assembled onto the vehicle body, it has numerous connection structures and poor sealing performance.

[0005] Application Contents

[0006] In view of the above problems, the present application provides a nut, a connection structure and a vehicle, which can enhance the connection sealing of the nut.

[0007] In a first aspect, the present application provides a nut, comprising: a main body portion, the main body portion having a through hole, at least a portion of the through hole being formed with an internal thread; and the main body portion is provided with a plurality of annular seals in the axial direction of the through hole.

[0008] In the technical solution of the embodiment of the present application, multiple annular seals are provided on the main body in the axial direction of the through-hole. When the nut is in use, the seals enhance the sealing performance of the nut connection. The annular seals enhance the sealing effect in the circumferential direction of the through-hole. At the same time, the multiple seals are distributed in the axial direction of the through-hole so that the multiple seals enhance the sealing effect in the axial direction of the through-hole. This facilitates enhancing the sealing effect of the nut without the need for a separate sealing structure, thereby reducing production costs.

[0009] In some embodiments, the body portion is provided with a plurality of grooves, and a sealing member is provided in each groove.

[0010] In the above technical solution, a groove is provided so that the seal can be located in the groove. In this way, the seal can be prevented from being separated from the main body, thereby enhancing the connection stability between the seal and the main body. At the same time, the groove can have a certain limiting effect on the seal to reduce the movement of the seal, which is conducive to improving the reliability of the seal.

[0011] In some embodiments, the through hole includes a plurality of sub-hole segments with different cross-sectional areas, adjacent sub-hole segments define step surfaces, and at least one step surface is provided with a groove.

[0012] In the above technical solution, the through hole is provided to include multiple sub-hole segments with different cross-sectional areas, so that when the nut is used, the multiple sub-hole segments can cooperate with parts of different cross-sectional areas of the first connecting member, and the groove is provided on the step surface to reduce the difficulty of setting the groove, thereby reducing the difficulty of assembling the seal and the groove.

[0013] In some embodiments, an axial end surface of the nut is provided with a groove.

[0014] In the above technical solution, by arranging a groove on the axial end face of the nut, the seal is located at the axial end face of the nut. In this way, when the axial end face of the nut abuts against the first fixing member, the seal located at the axial end face of the nut can achieve sealing between the axial end face of the nut and the first fixing member. At the same time, the seal located at the axial end face of the nut can enhance the sealing effect of the through hole in the circumferential direction of one axial end of the through hole.

[0015] In some embodiments, the through hole includes a first sub-hole segment and a second sub-hole segment, the first sub-hole segment is a light hole, the second sub-hole segment is provided with an internal thread, the cross-sectional area of ​​the second sub-hole segment is larger than the cross-sectional area of ​​the first sub-hole segment, the first sub-hole segment and the second sub-hole segment define a step surface with a groove, and the end face of the nut adjacent to the second sub-hole segment is provided with a groove.

[0016] In the above technical solution, the through hole is provided with a first sub-hole segment and a second sub-hole segment, so that the first sub-hole segment and the second sub-hole segment can respectively connect and cooperate with different structures, and the second sub-hole segment is provided with an internal thread, and the first sub-hole segment and the second sub-hole segment define a step surface with a groove, and the end face of the nut adjacent to the second sub-hole segment is provided with a groove. In this way, the two grooves are respectively located on both axial sides of the second sub-hole segment, so that when the nut is threadedly engaged with other structures, the seals corresponding to the two grooves can achieve sealing on both axial sides of the internal thread, thereby enhancing the sealing effect in the axial direction of the through hole, and the seal is constructed in an annular shape, so that the seal can enhance the sealing effect in the circumferential direction of the through hole. In this way, the sealing effect of the nut is easily enhanced.

[0017] In some embodiments, the sealing member is an elastic sealing ring.

[0018] In the above technical solution, the seal is set as an elastic sealing ring, that is, the seal has a certain elastic deformation performance, so that when the nut is used, the elastic deformation of the elastic sealing ring can be used to enhance the sealing effect, and rigid contact of the structure at the sealing point can be avoided, that is, the interference of the structure at the sealing point is reduced, thereby improving the sealing effect. At the same time, the structure of the seal is made simpler to reduce production costs.

[0019] In a second aspect, the present application provides a connection structure for connecting and fixing a first fixing member and a second fixing member, the connection structure comprising a nut according to any one of the above embodiments, and a plurality of seals for sealing the gap between the connection structure and the first fixing member.

[0020] In the above technical solution, by providing a nut, when the first fixing member and the second fixing member are connected through the nut, the gap between the connection structure and the first fixing member can be sealed by the sealing member, thereby enhancing the connection sealing effect between the two when achieving a fixed connection between the first fixing member and the second fixing member.

[0021] In some embodiments, the connection structure includes: a first connecting member and a fixed connecting member, the first connecting member is suitable for being fixed to the first fixing member, the first connecting member is threadedly matched with the internal thread, a sealing member is provided between the main body and the first connecting member, a sealing member is provided between the main body and the first fixing member, the fixed connecting member stops at the second fixing member, and the fixed connecting member passes through the second fixing member and the through hole and is fixedly connected to the first connecting member.

[0022] In the above technical solution, the first connecting member is adapted to be fixed to the first fixing member, and the fixed connecting member passes through the second fixing member and the through-hole to be fixedly connected to the first connecting member, so that the first fixing member and the second fixing member are connected and fixed by the cooperation of the fixed connecting member, the nut, and the first connecting member. The fixed connecting member abuts against the second fixing member, which can prevent the fixed connecting member and the second fixing member from being separated, thereby enhancing the connection stability between the fixed connecting member and the second fixing member. The first connecting member is provided with an internal threaded fit between the nut and the first connecting member to enhance the connection stability between the nut and the first connecting member, and the threaded fit method is simpler, thereby improving assembly efficiency.

[0023] Among them, a sealing member is provided between the main body and the first connecting member, through which the sealing of the connection between the main body and the first connecting member can be achieved, and a sealing member is provided between the main body and the first fixing member, through which the sealing of the connection between the main body and the first fixing member can be achieved. In this way, the connection between the main body and the first connecting member and the connection between the main body and the first fixing member can both be sealed by corresponding sealing members, thereby enhancing the connection sealing performance between the first fixing member and the second fixing member.

[0024] In some embodiments, the fixed connector is threadably engaged with the first connector.

[0025] In the above technical solution, the connection stability between the fixed connector and the first connector is enhanced by providing a threaded fit between the fixed connector and the first connector, and the threaded fit is simpler, so as to improve assembly efficiency.

[0026] In some embodiments, a sealant layer is provided between the first connecting member and the internal thread.

[0027] In the above technical solution, by setting a sealant layer, when the first connecting member and the internal thread are matched, the sealant layer can be used to fill the gap at the connection between the first connecting member and the internal thread, thereby achieving sealing of the connection between the first connecting member and the internal thread through the sealant layer, thereby enhancing the sealing performance of the connection between the first connecting member and the internal thread.

[0028] In some embodiments, the connection structure further includes a sleeve, which is externally mounted on the fixed connection member, and the sleeve is suitable for passing the second fixing member.

[0029] In the above technical solution, a sleeve is provided so that when the fixed connector passes through the second fixing member, the sleeve is externally mounted on the fixed connector. In this way, the sleeve can enhance the structural strength of the connection between the second fixing member and the fixed connector, reduce the deformation of the second fixing member, and prevent the fixed connector from directly contacting the second fixing member to avoid interference between the fixed connector and the second fixing member. At the same time, the sleeve can also play a certain guiding role on the fixed connector, so as to improve the assembly efficiency of the fixed connector.

[0030] In a third aspect, the present application provides a vehicle comprising the connection structure in any one of the above embodiments.

[0031] In the above technical solution, by providing the above connection structure, the connection and fixation of the first fixing member and the second fixing member of the vehicle can be achieved, and the connection sealing performance of the first fixing member and the second fixing member can be enhanced.

[0032] In some embodiments, the first fixing member is a chemical chamber, and the second fixing member is a vehicle body beam.

[0033] In the above technical solution, the chemical chamber and the vehicle body cross beam are connected via the above connection structure, which can achieve the connection and fixation between the chemical chamber and the vehicle body cross beam, and can enhance the sealing performance of the connection between the chemical chamber and the vehicle body cross beam.

[0034] In some embodiments, the connection structure further includes a first connection member, a partition beam is provided in the chemical chamber, and the first connection member is fixed to the partition beam.

[0035] In the above technical solution, by securing the first connector to the separator beam, the separator beam is connected to the vehicle body crossbeam via a connecting structure. This increases the number of connection points between the vehicle body crossbeam and the chemical chamber, thereby reducing the load on other connection points between the chemical chamber and the vehicle body crossbeam. This in turn enhances the stability of the connection between the chemical chamber and the vehicle body crossbeam, and reduces the risk of disconnection at these connection points during vehicle operation. Furthermore, the main body is provided with multiple annular seals axially along the through-hole of the nut. This seals the connection points, thereby blocking the entry of water and gas into the chemical chamber, thus meeting the chemical chamber's sealing requirements.

[0036] In some embodiments, the first connecting member is passed through the partition beam, and the bottom of the first connecting member is fixedly connected to the bottom of the partition beam.

[0037] In the above technical solution, a first connecting member is provided to pass through the partition beam, and the bottom of the first connecting member is fixedly connected to the bottom of the partition beam to enhance the connection stability between the first connecting member and the partition beam, and the arrangement of the first connecting member can utilize the original position of the partition beam, that is, the arrangement of the first connecting member will not occupy additional space in the chemical chamber, thereby rationally utilizing the space in the chemical chamber, improving space utilization, and helping to ensure the energy density of the battery. At the same time, the bottom of the first connecting member is fixedly connected to the bottom of the partition beam, so that the space occupied by the connection between the two can be reduced while ensuring the connection stability between the two.

[0038] In some embodiments, the chemical chamber includes a heat exchange plate for exchanging heat for the battery cells, and the heat exchange plate defines a top wall of the chemical chamber.

[0039] In the above technical solution, the top wall of the chemical chamber is defined by setting a heat exchange plate, so that the heat exchange plate is used as the top wall of the chemical chamber. In this way, the structure of the original upper cover of the chemical chamber can be reduced, thereby improving the degree of integration of the chemical chamber, and further facilitating the improvement of the energy density of the chemical chamber, and helping to reduce the volume and weight of the chemical chamber, so as to achieve a miniaturized and lightweight design of the chemical chamber.

[0040] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0042] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0043] FIG2 is a schematic cross-sectional view of a chemical tank and a vehicle body crossbeam connected via a connecting structure according to some embodiments of the present application;

[0044] Figure 3 is an enlarged view of point A in Figure 2;

[0045] FIG4 is a schematic cross-sectional structural diagram of the nut shown in FIG2 .

[0046] The accompanying drawings in the specific implementation manner are as follows:

[0047] Vehicle 1000; connecting structure 100; chemical chamber 200; partition beam 201; heat exchange plate 202; motor 300; controller 400; vehicle body cross beam 500; first fixing member 600; second fixing member 700; nut 10; first connecting member 20; flange portion 21; partition 22; fixed connecting member 30; sleeve 40; sealant layer 50; main body 1; through hole 11; sub-hole section 111, first sub-hole section 1111; second sub-hole section 1112; internal thread 12; groove 13; step surface 14; seal 2; axial direction Z of the through hole. DETAILED DESCRIPTION

[0048] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0050] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0051] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0052] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exists simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0053] 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).

[0054] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0055] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0056] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0057] In the related art, the chemical chamber is assembled to the vehicle body, and the two are usually connected and fixed by bolts and nuts to fix the chemical chamber to the vehicle body. However, when the chemical chamber and the vehicle body are connected and fixed by bolts and nuts, the connection sealing of the nuts is poor, and many parts are involved, resulting in high costs and low assembly efficiency.

[0058] In order to improve at least one of the above-mentioned technical problems, in an embodiment of the present application, a nut with a seal is provided, and specifically the nut is provided to include: a main body portion, the main body portion has a through hole, at least a portion of the through hole is formed with an internal thread, and in the axial direction of the through hole, the main body portion is provided with a plurality of annular seals.

[0059] When a chemical tank is secured to a vehicle body using such a nut, multiple seals are distributed axially along the through-hole, enhancing the nut's sealing effectiveness along the through-hole. This enhances the nut's sealing effectiveness and eliminates the need for separate sealing structures, reducing production costs.

[0060] Furthermore, in order to further improve the sealing effect of the nut, in an embodiment of the present application, the sealing member is constructed into a ring shape so that the sealing member can enhance the sealing effect in the circumferential direction of the through hole.

[0061] In short, in the context of increasing demands for assembly efficiency and sealing performance of chemical chambers, the installation frame of the embodiment of the present application can improve the assembly efficiency and connection sealing of the chemical chamber, save parts, reduce costs, and reduce occupied space.

[0062] The chemical chamber disclosed in the embodiments of the present application can be used in electrical devices that use the chemical chamber as a power source or various energy storage systems that use the chemical chamber as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and the spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0063] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0064] Please refer to Figure 1, which is a structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The vehicle 1000 is provided with a chemical chamber 200, and the chemical chamber 200 can be arranged at the bottom, head or tail of the vehicle 1000. The chemical chamber 200 can be used to power the vehicle 1000, for example, the chemical chamber 200 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 400 and a motor 300, and the controller 400 is used to control the chemical chamber 200 to power the motor 300, for example, for the starting, navigation and working power requirements of the vehicle 1000 during driving.

[0065] In some embodiments of the present application, a battery cell is integrated in the chemical chamber 200. The chemical chamber 200 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0066] According to some embodiments of the present application, referring to Figure 4, Figure 4 is a schematic diagram of the cross-sectional structure of the nut 10 along the axial direction of the through hole 11 of some embodiments of the present application; the nut 10 includes: a main body 1, the main body 1 has a through hole 11; in the axial direction of the through hole 11, the main body 1 is provided with a plurality of annular seals 2.

[0067] As shown in FIG. 4 , the Z direction is the axial direction of the through hole 11 .

[0068] The main body 1 has a through hole 11, which can penetrate the main body 1 along the thickness direction, length direction or other directions of the main body 1. For example, the main body 1 is constructed as a columnar structure, and the through hole 11 is a hole that penetrates the main body 1 in the axial direction (i.e., the axial direction Z of the through hole 11 shown in Figure 4), and the through hole 11 makes the two sides of the thickness direction of the main body 1 (such as the upper side and the lower side in Figure 4) connected, so that the fixed connection part 30 can be passed through the nut 10.

[0069] “At least a portion of the through hole 11 is formed with the internal thread 12 ” means that at least a portion of the inner wall of the through hole 11 is provided with the internal thread 12 , or the entire inner wall of the through hole 11 is provided with the internal thread 12 , which is not limited here.

[0070] Thus, by providing the internal thread 12, the first connector 20 or other structure is threadedly engaged with the nut 10. In this way, the connection stability of the nut 10 and the first connector 20 or other structure can be enhanced, and the threaded engagement method is simpler, so as to improve assembly efficiency.

[0071] “In the axial direction of the through hole 11, the main body 1 is provided with a plurality of annular seals 2” includes that the plurality of seals 2 are all located in the through hole 11 and are distributed in sequence or spaced apart along the axial direction of the through hole 11, or at least a part of the plurality of seals 2 are located in the through hole 11 and another part of the seals 2 are located outside the through hole 11 and are distributed in sequence or spaced apart, or the plurality of seals 2 are all outside the through hole 11 and are distributed in sequence or spaced apart along the axial direction of the through hole 11. No limitation is made here.

[0072] It should be noted that "the main body 1 is provided with multiple annular seals 2" includes: the seal 2 is assembled and connected to the main body 1, or the seal 2 and the main body 1 are integrally formed, wherein the assembly connection method includes but is not limited to snap-in, plug-in, or magnetic fit, etc., and the sizes of the multiple seals 2 may be the same or different, which is not limited here.

[0073] In this way, when the nut 10 is used to connect two structures, multiple sealing rings distributed in the axial direction of the through hole 11 can play a role of multiple axial sealing in the axial direction of the through hole 11, thereby enhancing the axial sealing effect of the nut 10.

[0074] Among them, the seal 2 is annular, so that the seal 2 can enhance the axial sealing effect of the nut 10 while also enhancing the circumferential sealing of the nut 10, and multiple seals 2 are distributed in the axial direction of the through hole 11, so that multiple seals 2 can play a circumferential sealing role at different axial positions of the through hole 11, thereby enhancing the circumferential sealing effect of the nut 10.

[0075] It is worth noting that the sealing member 2 in the embodiment of the present application can be constructed as a sealing ring, a sealing gasket, or other sealing structures that can achieve a sealing effect, which is not limited here.

[0076] The body 1 is provided with a plurality of annular seals 2 in the axial direction of the through-hole 11. When the nut 10 is in use, the seals 2 enhance the sealing performance of the connection of the nut 10. The annular seals 2 enhance the sealing effect in the circumferential direction of the through-hole 11. Furthermore, the plurality of seals 2 are distributed in the axial direction of the through-hole 11 to enhance the sealing effect in the axial direction of the through-hole 11. This facilitates enhancing the sealing effect of the nut 10 without requiring a separate sealing structure, thereby reducing production costs.

[0077] According to some embodiments of the present application, optionally, please continue to refer to FIG. 4 , the main body 1 is provided with a plurality of grooves 13 , and a sealing member 2 is provided in each groove 13 .

[0078] In other words, there are multiple grooves 13 and multiple seals 2, and the multiple grooves 13 correspond one to one with the multiple seals 2. Therefore, by providing the grooves 13, the seals 2 can be located in the grooves 13, so that the seals 2 can be prevented from being separated from the body 1, thereby enhancing the connection stability between the seals 2 and the body 1. At the same time, the grooves 13 can have a certain limiting effect on the seals 2, thereby reducing the movement of the seals 2 and improving the reliability of the seals 2.

[0079] The cross-sectional shape of the groove 13 may be rectangular or circular, or the shape of the groove 13 may be adapted to the shape of the sealing member 2 to better fix the sealing member 2 .

[0080] According to some embodiments of the present application, optionally, please continue to refer to FIG. 4 , the through hole 11 includes a plurality of sub-hole segments 111 with different cross-sectional areas, adjacent sub-hole segments 111 define step surfaces 14 , and at least one step surface 14 is provided with a groove 13 .

[0081] For example, the through hole 11 includes two sub-hole segments 111, or three sub-hole segments 111, or four sub-hole segments 111, which are not limited here, and the multiple sub-hole segments 111 are connected in sequence along the axial direction of the through hole 11 to ensure that the through hole 11 can penetrate along its axial direction.

[0082] The "cross-sectional area" in the "plurality of sub-hole segments 111 having different cross-sectional areas" refers to the cross-sectional area of ​​the sub-hole segment 111 taken perpendicularly to the axial direction of the through-hole 11. For example, if the sub-hole segment 111 is a cylindrical hole, the cross-sectional area is the radial cross-sectional area of ​​the sub-hole segment 111. Of course, the sub-hole segment 111 may also be configured in other shapes, which is not limited here.

[0083] “At least one step surface 14 is provided with a groove 13 ” includes that at least one step surface 14 among the plurality of step surfaces 14 is provided with a groove 13 , or each step surface 14 among the plurality of step surfaces 14 is provided with a groove 13 .

[0084] Therefore, by setting the through hole 11 to include multiple sub-hole segments 111 with different cross-sectional areas, when using the nut 10, the multiple sub-hole segments 111 can cooperate with parts of different cross-sectional areas of the first connecting member 20, and the groove 13 is set on the step surface 14, so as to reduce the difficulty of setting the groove 13, reduce the production difficulty, and thus reduce the difficulty of assembling the seal 2 and the groove 13.

[0085] According to some embodiments of the present application, optionally, referring to FIG. 4 , a groove 13 is provided on the axial end surface (Z direction in FIG. 4 ) of the nut 10 .

[0086] “The axial end face of the nut 10 is provided with a groove 13” includes that the end face of one axial end (such as the upper end as shown in Figure 4) of the nut 10 is provided with a groove 13, or the end face of the other axial end of the nut 10 (such as the lower end as shown in Figure 4) is provided with a groove 13, or the end faces of one axial end (such as the upper end as shown in Figure 4) and the other end (such as the lower end as shown in Figure 4) of the nut 10 are both provided with grooves 13, and no limitation is made here.

[0087] Therefore, by arranging the groove 13 on the axial end face of the nut 10, the seal 2 is located at the axial end face of the nut 10. In this way, when the axial end face of the nut 10 is in contact with the first fixing member 600 or other structures, the seal 2 located at the axial end face of the nut 10 can achieve sealing between the axial end face of the nut 10 and the first fixing member 600 or other structures. At the same time, the seal 2 located at the axial end face of the nut 10 can enhance the sealing effect on the through hole 11 in the circumferential direction of one axial end of the through hole 11.

[0088] According to some embodiments of the present application, optionally, referring to FIG. 4 , the through hole 11 includes a first sub-hole segment 1111 and a second sub-hole segment 1112. The first sub-hole segment 1111 is a smooth hole, the second sub-hole segment 1112 is provided with an internal thread 12, the cross-sectional area of ​​the second sub-hole segment 1112 is larger than the cross-sectional area of ​​the first sub-hole segment 1111, the first sub-hole segment 1111 and the second sub-hole segment 1112 define a step surface 14 provided with a groove 13, and the end surface of the nut 10 adjacent to the second sub-hole segment 1112 is provided with a groove 13. By providing the through hole 11 including the first sub-hole segment 1111 and the second sub-hole segment 1112, the first sub-hole segment 1111 and the second sub-hole segment 1112 can be connected and matched with different structures respectively.

[0089] "Light hole" means that the inner wall of the first sub-hole section 1111 is a smooth or nearly smooth wall surface. In this way, when the fixed connection member 30 is passed through the nut 10, the light hole can reduce the friction between the fixed connection member 30 and the nut 10, thereby improving the assembly efficiency.

[0090] The second sub-hole segment 1112 is provided with an internal thread 12, and the cross-sectional area of ​​the second sub-hole segment 1112 is larger than the cross-sectional area of ​​the first sub-hole segment 1111, so as to define a step surface 14 between the first sub-hole segment 1111 and the second sub-hole segment 1112, and the step surface 14 is oriented in the axial direction of the second sub-hole segment 1112.

[0091] In this way, when the groove 13 is set on the step surface 14, the tool can enter from the second sub-hole section 1112 with a larger cross-sectional area, so as to reduce the production difficulty of the groove 13, and facilitate the placement of the seal 2 into the groove 13, so as to reduce the difficulty of setting the seal 2 located in the groove 13. At the same time, the internal thread 12 is set on the inner wall of the second sub-hole section 1112, so as to increase the size of the internal thread 12. In this way, when the nut 10 is connected to other structures, the connection stability of the nut 10 and other structures can be increased.

[0092] Furthermore, a groove 13 is provided on the end surface of the nut 10 adjacent to the second sub-hole segment 1112 (e.g., the lower end in FIG. 4 ). Thus, the two grooves 13 are located on either axial side of the second sub-hole segment 1112. Therefore, when the nut 10 is threadedly engaged with another structure, the seals 2 corresponding to the two grooves 13 can seal on both axial sides of the internal thread 12, thereby enhancing the sealing effect in the axial direction of the through-hole 11. Furthermore, the seal 2 is annular in shape, enabling it to enhance the sealing effect in the circumferential direction of the through-hole 11. This facilitates enhancing the sealing effect of the nut 10.

[0093] According to some embodiments of the present application, optionally, the sealing member 2 is an elastic sealing ring.

[0094] Therefore, by setting the seal 2 as an elastic sealing ring, that is, the seal 2 has a certain elastic deformation performance, when the nut 10 is used, the elastic deformation of the elastic sealing ring can be used to enhance the sealing effect, and rigid contact of the structure at the sealing location can be avoided, that is, the interference of the structure at the sealing location is reduced, thereby improving the sealing effect. At the same time, the structure of the seal 2 is made simpler to reduce production costs.

[0095] For example, the elastic sealing member 2 may be made of rubber, silicone, or other materials with elastic deformation capability, which is not limited here.

[0096] Secondly, referring to FIG2 , FIG2 is a schematic cross-sectional view of a connection structure 100 in some embodiments of the present application connecting a first fixing member 600 and a second fixing member 700. Connection structure 100 is used to connect and fix first fixing member 600 and second fixing member 700. Referring to FIG2 , connection structure 100 includes: a nut 10 according to any of the aforementioned embodiments; and a seal 2 for sealing the gap between connection structure 100 and first fixing member 600.

[0097] Therefore, by setting the nut 10, when the first fixing member 600 and the second fixing member 700 are connected by the nut, the gap between the connection structure 100 and the first fixing member 600 can be sealed by the sealing member 2, thereby enhancing the connection sealing effect between the two when achieving the fixed connection between the first fixing member 600 and the second fixing member 700.

[0098] According to some embodiments of the present application, optionally, referring to FIG. 2 , the connection structure 100 includes: a first connection member 20 and a fixed connection member 30 .

[0099] The first connecting member 20 is suitable for being fixed to the first fixing member 600, and the first connecting member 20 is threadedly matched with the internal thread 12. A sealing member 2 is provided between the main body 1 and the first connecting member 20, and a sealing member 2 is provided between the main body 1 and the first fixing member 600. The fixed connecting member 30 stops at the second fixing member 700, and the fixed connecting member 30 passes through the second fixing member 700 and the through hole 11 and is fixedly connected to the first connecting member 20.

[0100] Therefore, by setting the first connecting member 20 to be suitable for being fixed to the first fixing member 600, the fixed connecting member 30 passes through the second fixing member 700 and the through hole 11 and is fixedly connected to the first connecting member 20, so that the connection and fixation of the first fixing member 600 and the second fixing member 700 are achieved through the cooperation of the fixed connecting member 30, the nut 10 and the first connecting member 20.

[0101] Among them, the "first fixing part 600 and the second fixing part 700" can be two structures that need to be connected and fixed. For example, when the nut 10 is used to fix the chemical chamber 200 on the vehicle body, the first fixing part 600 is the chemical chamber 200, and the second fixing part 700 is the vehicle body crossbeam 500 or the seat crossbeam, or when the nut 10 is applied to other structures, the first fixing part 600 and the second fixing part 700 can also be other structures, which is not limited here.

[0102] Furthermore, when the first fixing member 600 and the second fixing member 700 are connected and fixed by the connecting structure 100, the fixed connecting member 30 stops at the second fixing member 700, which can prevent the fixed connecting member 30 from being separated from the second fixing member 700, so as to enhance the connection stability between the fixed connecting member 30 and the second fixing member 700, and by setting the first connecting member 20 to be threadedly matched with the internal thread 12 of the nut 10, the connection stability between the nut 10 and the first connecting member 20 is enhanced, and the threaded matching method is simpler, so as to improve the assembly efficiency.

[0103] Among them, a sealing member 2 is provided between the main body 1 and the first connecting member 20, and the sealing of the connection between the main body 1 and the first connecting member 20 can be achieved through the sealing member 2, and a sealing member 2 is provided between the main body 1 and the first fixing member 600, and the sealing of the connection between the main body 1 and the first fixing member 600 can be achieved through the sealing member 2. In this way, the connection between the main body 1 and the first connecting member 20 and the connection between the main body 1 and the first fixing member 600 can both be sealed through the corresponding sealing member 2, thereby enhancing the connection sealing between the first fixing member 600 and the second fixing member 700.

[0104] According to some embodiments of the present application, optionally, the fixed connection member 30 is threadedly engaged with the first connection member 20 .

[0105] Therefore, by providing the fixed connector 30 and the first connector 20 for threaded engagement, the connection stability between the fixed connector 30 and the first connector 20 is enhanced, and the threaded engagement method is simpler, so as to improve assembly efficiency.

[0106] For example, the fixed connection member 30 may be a bolt, or other structure that can be threadedly matched with the first connection member 20 .

[0107] According to some embodiments of the present application, optionally, referring to FIG. 2 and FIG. 3 , a sealant layer 50 is provided between the first connecting member 20 and the internal thread 12 .

[0108] Therefore, by setting the sealant layer 50, when the first connecting member 20 and the internal thread 12 are threadedly matched, the sealant layer 50 can be used to fill the gap at the connection between the first connecting member 20 and the internal thread 12, thereby achieving the sealing of the connection between the first connecting member 20 and the internal thread 12 through the sealant layer 50, thereby enhancing the connection sealing between the first connecting member 20 and the internal thread 12.

[0109] According to some embodiments of the present application, optionally, please continue to refer to FIG. 2 , the connection structure 100 further includes a sleeve 40 , which is sleeved onto the fixed connection member 30 , and the sleeve 40 is suitable for passing the second fixing member 700 .

[0110] Therefore, by setting the sleeve 40, when the fixed connector 30 passes through the second fixing member 700, the sleeve 40 is outer-mounted on the fixed connector 30. In this way, the sleeve 40 can enhance the structural strength of the connection between the second fixing member 700 and the fixed connector 30, reduce the deformation of the second fixing member 700, and the sleeve 40 can prevent the fixed connector 30 from directly contacting the second fixing member 700 to avoid interference between the fixed connector 30 and the second fixing member 700. At the same time, the sleeve 40 can also play a certain guiding role on the fixed connector 30, so as to improve the assembly efficiency of the fixed connector 30.

[0111] In a third aspect, the present application provides a vehicle 1000 , which includes the connection structure 100 according to any one of the above embodiments.

[0112] Therefore, by providing the connection structure 100 , the connection and fixation of the first fixing member 600 and the second fixing member 700 of the vehicle 1000 can be achieved, and the connection sealing performance of the first fixing member 600 and the second fixing member 700 can be enhanced.

[0113] According to some embodiments of the present application, optionally, the first fixing member 600 is the chemical chamber 200 , and the second fixing member 700 is the vehicle body cross beam 500 .

[0114] It should be noted that the top cover of the chemical chamber 200 may be defined by the vehicle body floor and / or the heat exchange plate 202 , and a battery cell is provided in the chemical chamber 200 .

[0115] Thus, the chemical chamber 200 and the vehicle body cross beam 500 are connected through the above-mentioned connection structure 100, which can realize the connection and fixation of the chemical chamber 200 and the vehicle body cross beam 500 and enhance the connection sealing performance between the chemical chamber 200 and the vehicle body cross beam 500.

[0116] Of course, the second fixing member 700 may also be a seat crossbeam, a vehicle body longitudinal beam, a vehicle body floor or other structures, which are not limited here.

[0117] According to some embodiments of the present application, optionally, the connection structure 100 further includes a first connection member 20 , a partition beam 201 is provided in the chemical chamber 200 , and referring to FIG. 2 , the first connection member 20 is fixed to the partition beam 201 .

[0118] “Separation beam 201 ” refers to an inherent structure within the chemical chamber 200 , and the separation beam 201 is a structural beam used to separate multiple battery cells 205 to reduce the risk of thermal runaway. The separation beam 201 is usually located inside the chemical chamber 200 .

[0119] It should be noted that in the related art, when the chemical chamber 200 is fixed to the vehicle body cross beam 500, the outer shell of the chemical chamber 200 is directly fixed to the vehicle body cross beam 500. However, due to the size limitation of the outer shell of the chemical chamber 200, there are fewer connection points between the chemical chamber 200 and the vehicle body cross beam 500. This will cause a single connection point to bear a larger load, and there is a risk of the connection point being detached during the driving of the entire vehicle.

[0120] In the embodiment of the present application, the first connecting member 20 is fixed to the partition beam 201, so that the partition beam 201 is connected to the vehicle body cross beam 500 through the connecting structure 100. In this way, the number of connection points between the vehicle body cross beam 500 and the chemical chamber 200 can be increased, thereby reducing the load on other connection points between the chemical chamber 200 and the vehicle body cross beam 500, thereby enhancing the connection stability between the chemical chamber 200 and the vehicle body cross beam 500, and reducing the risk of connection points being detached during vehicle driving.

[0121] At the same time, in the axial direction of the through hole 11 of the nut 10, the main body 1 is provided with multiple annular seals 2, so that the connection point can be sealed, thereby blocking the path of water and gas entering the chemical chamber 200 to meet the sealing requirements of the chemical chamber 200.

[0122] According to some embodiments of the present application, optionally, please continue to refer to FIG. 2 , the first connecting member 20 is passed through the partition beam 201 , and the bottom of the first connecting member 20 is fixedly connected to the bottom of the partition beam 201 .

[0123] For example, the first connecting member 20 is embedded in the partition beam 201 to enhance the connection stability between the first connecting member 20 and the partition beam 201, and the arrangement of the first connecting member 20 can utilize the original position of the partition beam 201, that is, the arrangement of the first connecting member 20 will not occupy additional space in the chemical chamber 200, thereby rationally utilizing the space in the chemical chamber 200, improving space utilization, and helping to ensure the energy density of the battery.

[0124] Among them, the first connecting member 20 can be constructed as a cylindrical structure so that the lower end of the fixed connecting member 30 can extend into the first connecting member 20 and be threadedly engaged with the first connecting member 20. Please refer to Figure 2. The cylindrical structure is provided with a partition 22 for closing the bottom of the inner cavity of the cylindrical structure, thereby blocking the path of water and gas entering the chemical chamber 200, so as to meet the sealing requirements of the chemical chamber 200.

[0125] At the same time, the bottom of the first connecting member 20 is fixedly connected to the bottom of the partition beam 201. For example, a flange portion 21 is provided at the bottom of the first connecting member 20. At least part of the flange portion 21 is located at the bottom of the partition beam 201 and is against the bottom of the partition beam 201. In this way, the partition beam 201 can be welded to the bottom of the first connecting member 20 and the bottom of the partition beam 201. In this way, the space occupied by the connection between the two can be reduced while ensuring the stability of the connection between the two.

[0126] It should be noted that by providing a flange portion 21 at the bottom of the first connecting member 20, the bottom of the partition beam 201 can be separated from the bottom plate of the chemical chamber 200. In this way, during later maintenance, the bottom plate of the chemical chamber 200 can be directly removed to reduce the difficulty of maintenance.

[0127] According to some embodiments of the present application, optionally, the chemical chamber 200 includes a heat exchange plate 202 for exchanging heat for the battery cells 205 , and the heat exchange plate 202 defines a top wall of the chemical chamber 200 .

[0128] Therefore, by setting the heat exchange plate 202 to define the top wall of the chemical chamber 200, the heat exchange plate 202 can be used as the top wall of the chemical chamber 200. In this way, the structure of the original upper cover of the chemical chamber 200 can be reduced, thereby improving the degree of integration of the chemical chamber 200, and further facilitating the improvement of the energy density of the chemical chamber 200, and helping to reduce the volume and weight of the chemical chamber 200, so as to achieve a miniaturized and lightweight design of the chemical chamber 200.

[0129] During actual assembly, the first connecting member 20 passes through the partition beam 201 and the heat exchange plate 202 in sequence, and then the nut 10 is tightened on the first connecting member 20. After tightening, the seal 2 located on the end face of the axial lower end of the nut 10 presses the heat exchange plate 202, and the seal 2 located on the step surface 14 presses the upper end face of the first connecting member 20.

[0130] The sleeve 40 is pre-embedded in the vehicle body cross beam 500 , and then the vehicle body cross beam 500 is installed. The fixed connector 30 passes through the sleeve 40 and the nut 10 in sequence and is tightened at the internal thread of the first connector 20 .

[0131] In this way, the partition beam 201 of the chemical chamber 200 is connected to the vehicle body cross beam 500 by fixing the connecting member 30, the sleeve 40, the nut 10 and the first connecting member 20, thereby connecting the chemical chamber 200 to the vehicle body.

[0132] Among them, the water and air inlet paths can be blocked by multiple sealing members 2, partitions 22, and sealant layers 50, thereby sealing the connection point and thus sealing the chemical chamber 200.

[0133] According to some embodiments of the present application, a nut 10 is provided. The nut 10 includes: a main body 1, the main body 1 having a through hole 11, at least a portion of the through hole 11 being formed with an internal thread 12, and the main body 1 being provided with a plurality of annular seals 2 in the axial direction of the through hole 11. When the chemical chamber 200 is connected and fixed to the vehicle body using such a nut 10, the plurality of seals 2 are distributed in the axial direction of the through hole 11, so that the plurality of seals 2 can enhance the sealing effect of the nut 10 in the axial direction of the through hole 11. In this way, it is convenient to enhance the sealing effect of the nut 10, and it is possible to achieve sealing at the connection point, thereby blocking the path for water and gas to enter the chemical chamber 200, so as to meet the sealing requirements of the chemical chamber 200.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A nut, wherein: include: A main body, wherein the main body has a through hole, and at least a portion of the through hole is formed with an internal thread; The main body is provided with a plurality of annular sealing members in the axial direction of the through hole.

2. The nut according to claim 1, wherein: The main body is provided with a plurality of grooves, and the sealing component is arranged in each of the grooves.

3. The nut according to claim 2, wherein: The through hole includes a plurality of sub-hole segments with different cross-sectional areas, and adjacent sub-hole segments define step surfaces, and at least one of the step surfaces is provided with the groove.

4. The nut according to claim 3, wherein: The groove is provided on the axial end surface of the nut.

5. The nut according to claim 3 or 4, wherein: The through hole includes a first sub-hole segment and a second sub-hole segment, the first sub-hole segment is a light hole, the second sub-hole segment is provided with the internal thread, the cross-sectional area of ​​the second sub-hole segment is larger than the cross-sectional area of ​​the first sub-hole segment, the first sub-hole segment and the second sub-hole segment define the step surface with the groove, and the end face of the nut adjacent to the second sub-hole segment is provided with the groove.

6. The nut according to any one of claims 1 to 5, wherein: The sealing element is an elastic sealing ring.

7. A connection structure, wherein: The connection structure is used to connect and fix a first fixing member and a second fixing member, the connection structure comprises a nut according to any one of claims 1 to 6, and the plurality of seals are used to seal a gap between the connection structure and the first fixing member.

8. The connection structure according to claim 7, wherein: The connection structure comprises: a first connecting member, the first connecting member being adapted to be fixed to the first fixing member; The first connecting member is threadably matched with the internal thread, the sealing member is provided between the main body and the first connecting member, and the sealing member is provided between the main body and the first fixing member; A fixed connecting member, wherein the fixed connecting member abuts against the second fixing member, and the fixed connecting member passes through the second fixing member and the through hole to be fixedly connected with the first connecting member.

9. The connection structure according to claim 8, wherein: The fixed connecting member is threadably matched with the first connecting member.

10. The connection structure according to claim 8 or 9, wherein: A sealing rubber layer is provided between the first connecting member and the internal thread.

11. The connection structure according to any one of claims 8 to 10, wherein: It also includes a sleeve, which is sleeved onto the fixed connecting member, and the sleeve is suitable for passing the second fixing member.

12. A vehicle, wherein: Comprising a connection structure according to any one of claims 7-11.

13. The vehicle of claim 12, wherein: The first fixing member is a chemical chamber, and the second fixing member is a vehicle body cross beam.

14. The vehicle according to claim 13, wherein: The connection structure also includes a first connection member, a partition beam is provided in the chemical chamber, and the first connection member is fixed to the partition beam.

15. The vehicle of claim 14, wherein: The first connecting member is passed through the partition beam, and the bottom of the first connecting member is fixedly connected to the bottom of the partition beam.

16. The vehicle according to any one of claims 13 to 15, wherein: The chemical chamber includes a heat exchange plate for exchanging heat for the battery core, and the heat exchange plate defines a top wall of the chemical chamber.

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