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

Nut, connecting structure and vehicle

[0001] Cross-reference to related applications

[0002] The present application is based on Chinese patent application No. 202322373635.3, filed on August 31, 2023, and Chinese patent application No. 202322460668.1, filed on September 08, 2023, and claims priority to the Chinese patent application, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of connecting structure, in particular to a nut, a connecting structure and a vehicle. BACKGROUND

[0004] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy-saving and environmentally friendly advantages. For electric vehicles, connecting and sealing technology is an important factor for their development. The chemical bin has many connecting structures when assembled to the vehicle body, and the connecting and sealing performance is poor.

[0005] SUMMARY

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

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

[0008] In the technical scheme of the present application, in the axial direction of the through hole, the body portion is provided with a plurality of annular sealing members, so that when the nut is used, the connecting and sealing performance of the nut is enhanced by the sealing members. The sealing members are configured in an annular shape, so that the sealing members can enhance the sealing effect in the circumferential direction of the through hole. At the same time, the plurality of sealing members are distributed in the axial direction of the through hole, so that the plurality of sealing members can enhance the sealing effect in the axial direction of the through hole. In this way, the sealing effect of the nut is enhanced, and other sealing structures do not need to be separately provided, so as to reduce the production cost.

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

[0010] In the technical scheme, the recess is arranged, so that the sealing member can be located in the recess, thereby avoiding the sealing member from being separated from the body part, enhancing the connection stability of the sealing member and the body part, and the recess can limit the sealing member, reducing the movement of the sealing member and improving the reliability of the sealing member.

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

[0012] In the technical scheme, the through hole comprises a plurality of sub-hole sections with different cross-sectional areas, so that when the nut is used, the plurality of sub-hole sections can cooperate with the portions of the first connecting member with different cross-sectional area sizes, and the recess is arranged on the step surface, so as to reduce the difficulty of arranging the recess, thereby reducing the assembly difficulty of the sealing member and the recess.

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

[0014] In the technical scheme, the recess is arranged on the axial end surface of the nut, so that the sealing member is located at the axial end surface of the nut, and when the axial end surface of the nut abuts against the first fixing member, the sealing member located at the axial end surface of the nut can seal the axial end surface of the nut and the first fixing member, and the sealing member located at the axial end surface of the nut can enhance the sealing effect of the through hole in the circumferential direction of the axial end of the through hole.

[0015] In some embodiments, the through hole comprises a first sub-hole section and a second sub-hole section, the first sub-hole section is a through hole, the second sub-hole section is provided with an internal thread, the cross-sectional area of the second sub-hole section is larger than that of the first sub-hole section, the first sub-hole section and the second sub-hole section define a step surface provided with a recess, and the end surface of the nut adjacent to the second sub-hole section is provided with a recess.

[0016] In the technical scheme, the through hole comprises a first sub-hole section and a second sub-hole section, so that the first sub-hole section and the second sub-hole section can be connected with different structures respectively, the second sub-hole section is provided with an internal thread, the first sub-hole section and the second sub-hole section define a step surface provided with a recess, and the end surface of the nut adjacent to the second sub-hole section is provided with a recess, so that the two recesses are located on the axial two sides of the second sub-hole section respectively, and when the nut is threadedly connected with other structures, the sealing members corresponding to the two recesses can seal on the axial two sides of the internal thread, thereby enhancing the sealing effect in the axial direction of the through hole, and the sealing member is annular, so that the sealing member can enhance the sealing effect in the circumferential direction of the through hole. In this way, the sealing effect of the nut can be enhanced.

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

[0018] In the technical scheme, the sealing member is an elastic sealing ring, that is, the sealing member has a certain elastic deformation performance, so that when the nut is used, the elastic deformation of the elastic sealing ring can enhance the sealing effect, and rigid contact of the structure at the sealing position can be avoided, that is, interference of the structure at the sealing position is reduced, so that the sealing effect is improved, and the structure of the sealing member is simpler, so that the production cost is reduced.

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

[0020] In the technical scheme, the nut is provided, so that when the first fixing member and the second fixing member are connected by the nut, the gap between the connecting structure and the first fixing member is sealed by the sealing member, so that when the first fixing member and the second fixing member are fixedly connected, the connection sealing effect between the two is enhanced.

[0021] In some embodiments, the connecting structure comprises a first connecting member and a fixed connecting member, the first connecting member being adapted to be fixed to the first fixing member, the first connecting member being threadedly engaged with the internal thread, the sealing member being arranged between the body portion and the first connecting member, the sealing member being arranged between the body portion and the first fixing member, the fixed connecting member being abutted to the second fixing member, and the fixed connecting member being fixedly connected to the first connecting member through the second fixing member and the through hole.

[0022] In the technical scheme, the first connecting member is adapted to be fixed to the first fixing member, and the fixed connecting member is fixedly connected to the first connecting member through the second fixing member and the through hole, so that the connection and fixation of the first fixing member and the second fixing member are realized by the cooperation of the fixed connecting member, the nut and the first connecting member. The fixed connecting member is abutted to the second fixing member, so that the fixed connecting member is prevented from being separated from the second fixing member, thereby enhancing the connection stability of the fixed connecting member and the second fixing member. The first connecting member is threadedly engaged with the internal thread of the nut, thereby enhancing the connection stability of the nut and the first connecting member, and the threaded engagement is simpler, thereby facilitating the assembly efficiency.

[0023] The sealing member is arranged between the body portion and the first connecting member, so that the connection between the body portion and the first connecting member is sealed by the sealing member. The sealing member is arranged between the body portion and the first fixing member, so that the connection between the body portion and the first fixing member is sealed by the sealing member. In this way, the connection between the body portion and the first connecting member and the connection between the body portion and the first fixing member can be sealed by the corresponding sealing members, thereby enhancing the connection sealing property of the first fixing member and the second fixing member.

[0024] In some embodiments, the fixed connecting piece is threadedly connected with the first connecting piece.

[0025] In the above technical solution, the fixed connecting piece is threadedly connected with the first connecting piece to enhance the connection stability of the fixed connecting piece and the first connecting piece, and the threadedly connected mode is simpler to improve the assembly efficiency.

[0026] In some embodiments, a sealing glue layer is arranged between the first connecting piece and the internal thread.

[0027] In the above technical solution, the sealing glue layer is arranged to fill the gap at the connection between the first connecting piece and the internal thread when they are threadedly connected, so that the connection between the first connecting piece and the internal thread is sealed by the sealing glue layer to enhance the connection sealing property of the first connecting piece and the internal thread.

[0028] In some embodiments, the connecting structure further comprises a sleeve, the sleeve is sleeved to the fixed connecting piece, and the sleeve is adapted to be arranged through the second fixed piece.

[0029] In the above technical solution, the sleeve is arranged to be sleeved to the fixed connecting piece when the fixed connecting piece is arranged through the second fixed piece, so that the structural strength of the connection between the second fixed piece and the fixed connecting piece is enhanced by the sleeve to reduce the deformation of the second fixed piece, and the sleeve can avoid the direct contact between the fixed connecting piece and the second fixed piece to avoid the interference between the fixed connecting piece and the second fixed piece, and the sleeve can also guide the fixed connecting piece to improve the assembly efficiency of the fixed connecting piece.

[0030] In a third aspect, the application provides a vehicle comprising the connecting structure according to any one of the above embodiments.

[0031] In the above technical solution, the connecting structure is arranged to facilitate the connection and fixation of the first fixed piece and the second fixed piece of the vehicle and to enhance the connection sealing property of the first fixed piece and the second fixed piece.

[0032] In some embodiments, the first fixed piece is a chemical bin, and the second fixed piece is a vehicle body cross beam.

[0033] In the above technical solution, the chemical bin and the vehicle body cross beam are connected by the connecting structure to achieve the connection and fixation of the chemical bin and the vehicle body cross beam and to enhance the connection sealing property of the chemical bin and the vehicle body cross beam.

[0034] In some embodiments, the connecting structure further comprises a first connecting piece, the chemical bin is provided with a partition beam, and the first connecting piece is fixed to the partition beam.

[0035] In the technical scheme, the first connecting piece is fixed to the partition beam, and the partition beam and the vehicle body beam are connected through the connecting structure, so that the number of connecting points of the vehicle body beam and the chemical bin is increased, the load borne by other connecting points of the chemical bin and the vehicle body beam is reduced, the connection stability of the chemical bin and the vehicle body beam is improved, and the risk of disconnection of the connecting points during vehicle driving is reduced. Meanwhile, the plurality of annular sealing members are arranged on the body portion in the axial direction of the through hole of the nut, so that the connecting points are sealed, the path of water and gas entering the chemical bin is blocked, and the sealing requirement of the chemical bin is met.

[0036] In some embodiments, the first connecting piece is arranged through the partition beam, and the bottom of the first connecting piece is fixedly connected with the bottom of the partition beam.

[0037] In the technical scheme, the first connecting piece is arranged through the partition beam, and the bottom of the first connecting piece is fixedly connected with the bottom of the partition beam, so that the connection stability of the first connecting piece and the partition beam is improved, the arrangement of the first connecting piece does not occupy additional space in the chemical bin, the space in the chemical bin is reasonably utilized, the space utilization is improved, the energy density of the battery is ensured, and meanwhile, the bottom of the first connecting piece is fixedly connected with the bottom of the partition beam, so that the space occupied by the connecting points of the two is reduced while the connection stability of the two is ensured.

[0038] In some embodiments, the chemical bin comprises a heat exchange plate for heat exchange of the battery cell, and the heat exchange plate defines the top wall of the chemical bin.

[0039] In the technical scheme, the heat exchange plate defines the top wall of the chemical bin, so that the heat exchange plate is used as the top wall of the chemical bin, the structure of the original upper cover of the chemical bin is reduced, the integration degree of the chemical bin is improved, the energy density of the chemical bin is improved, the volume and weight of the chemical bin are reduced, and the miniaturization and lightweight design of the chemical bin are realized.

[0040] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are intended to depict only preferred embodiments of the application, and therefore should not be considered to limit the scope of the application in any way. Similarly, like reference numerals are used to indicate like parts throughout the several views. Some embodiments are now described with reference to the attached figures.

[0042] Fig. 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application;

[0043] Fig. 2 is a sectional structural schematic diagram of a chemical bin and a vehicle body cross beam connected through a connecting structure according to some embodiments of the present application;

[0044] Fig. 3 is an enlarged view of A in Fig. 2;

[0045] Fig. 4 is a sectional structural schematic diagram of a nut shown in Fig. 2.

[0046] The reference signs in the detailed description of the embodiments are as follows:

[0047] Vehicle 1000; connecting structure 100; chemical bin 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 part 21; partition 22; fixed connecting member 30; sleeve 40; sealing adhesive layer 50; body part 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; sealing member 2; axial direction Z of the through hole. DETAILED DESCRIPTION

[0048] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0050] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0051] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0052] In the description of the embodiments of the application, the term“and / or” only means an association relationship of the associated objects, and means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character“ / ” herein generally means that the front and rear associated objects are in an“or” relationship.

[0053] In the description of the embodiments of the application, the term“a plurality of” means more than two (including two), and similarly, “a plurality of groups” means more than two groups (including two groups), and “a plurality of pieces” means more than two pieces (including two pieces).

[0054] In the description of the embodiments of the application, the technical terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the application.

[0055] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connection”,“connection”,“fixing” and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0056] At present, from the development of market situation, the application of power battery is more and more extensive. The power battery is not only applied to the energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0057] In the related art, the chemical bin is assembled to the vehicle body, and the connection and fixation between the two are usually achieved by the connection and cooperation of bolts and nuts to fix the chemical bin to the vehicle body. However, when the connection and fixation between the chemical bin and the vehicle body are achieved by the bolts and the nuts, the connection sealing property of the nuts is poor, and many parts are involved, which leads to high cost and low assembly efficiency.

[0058] In order to improve at least one of the above technical problems, in the embodiments of the present application, a nut with a sealing member is provided, specifically, the nut comprises a body part, the body part has a through hole, at least a part of the through hole is formed with an internal thread, and the body part is provided with a plurality of annular sealing members in the axial direction of the through hole.

[0059] When the chemical bin is connected and fixed to the vehicle body by using such a nut, the plurality of sealing members are distributed in the axial direction of the through hole, so that the plurality of sealing members can enhance the sealing effect of the nut in the axial direction of the through hole. In this way, the sealing effect of the nut can be enhanced, and other sealing structures do not need to be separately provided, so as to reduce the production cost.

[0060] In addition, in order to further improve the sealing effect of the nut, in the embodiments of the present application, the sealing member is configured as an annular shape, so that the sealing member can enhance the sealing effect in the circumferential direction of the through hole.

[0061] In short, in the background of the increasing demand for the assembly efficiency and sealing performance of the chemical bin, the mounting frame of the embodiments of the present application can improve the assembly efficiency and connection sealing property of the chemical bin, save parts, reduce cost, and reduce the occupied space.

[0062] The chemical bin disclosed in the embodiments of the present application can be used in an electric device using the chemical bin as a power source or a variety of energy storage systems using the chemical bin as an energy storage element. The electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric plane toys, etc., and the spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0063] The following embodiments take a vehicle 1000 as an example for convenience of description.

[0064] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile, or a range extended automobile, etc. The vehicle 1000 is provided with a chemical bin 200, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The chemical bin 200 can be used for power supply of the vehicle 1000, for example, the chemical bin 200 can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 400 and a motor 300, and the controller 400 is used to control the chemical bin 200 to supply power to the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0065] In some embodiments of the present application, the chemical bin 200 is integrated with an electric core, and the chemical bin 200 can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0066] According to some embodiments of the present application, refer to FIG. 4, which is a cross-sectional structural schematic diagram of a nut 10 along the axial direction of a through hole 11 according to some embodiments of the present application. The nut 10 includes a body part 1 having a through hole 11, and the body part 1 is provided with a plurality of annular sealing members 2 in the axial direction of the through hole 11.

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

[0068] The body part 1 has a through hole 11, which can pass through the body part 1 along the thickness direction, or the length direction, or other directions of the body part 1. For example, the body part 1 is configured as a columnar structure, the through hole 11 is a hole passing through the body part 1 in the axial direction of the body part 1 (i.e. the axial direction Z of the through hole 11 shown in FIG. 4), and the through hole 11 communicates the two sides (e.g. the upper side and the lower side in FIG. 4) of the thickness direction of the body part 1, so that the fixing connector 30 can be arranged in the nut 10.

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

[0070] Therefore, by providing the internal thread 12, the first connector 20 or other structures can be threadedly connected with the nut 10. In this way, the connection stability of the nut 10 and the first connector 20 or other structures can be enhanced, and the threadedly connected manner is simpler, so as to improve the assembly efficiency.

[0071] The "body portion 1 is provided with a plurality of annular sealing members 2 in the axial direction of the through hole 11" includes that the plurality of sealing members 2 are all located in the through hole 11 and are sequentially distributed or spaced apart in the axial direction of the through hole 11, or at least part of the plurality of sealing members 2 are sequentially distributed in the through hole 11 and the other part of the sealing members 2 are located outside the through hole 11, or all the plurality of sealing members 2 are located outside the through hole 11 and are sequentially distributed or spaced apart in the axial direction of the through hole 11, which is not limited here.

[0072] It should be noted that "the body portion 1 is provided with a plurality of annular sealing members 2" includes that the sealing members 2 are assembled with the body portion 1, or the sealing members 2 are integrally formed with the body portion 1, wherein the assembly connection mode includes but is not limited to clamping, or plug-in, or magnetic attraction, etc., and the sizes of the plurality of sealing members 2 can be the same or different, which is not limited here.

[0073] In this way, when the nut 10 is used to connect two structures, the plurality of sealing rings distributed in the axial direction of the through hole 11 can play the 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 sealing member 2 is annular, so that the sealing member 2 can enhance the axial sealing effect of the nut 10 while also enhancing the circumferential sealing of the nut 10, and the plurality of sealing members 2 are distributed in the axial direction of the through hole 11, so that the plurality of sealing members 2 can play the role of circumferential sealing at different positions in the axial direction 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 application can be configured as a sealing ring, or a sealing gasket, or other sealing structure that can achieve sealing effect, which is not limited here.

[0076] By providing a plurality of annular sealing members 2 in the axial direction of the through hole 11, the connection sealing of the nut 10 is enhanced by the sealing members 2 when the nut 10 is used, wherein the sealing member 2 is configured as an annular shape, so that the sealing member 2 can enhance the sealing effect in the circumferential direction of the through hole 11, and the plurality of sealing members 2 are distributed in the axial direction of the through hole 11, so that the plurality of sealing members 2 can enhance the sealing effect in the axial direction of the through hole 11. In this way, the sealing effect of the nut 10 is enhanced, and other sealing structures do not need to be separately provided, so as to reduce the production cost.

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

[0078] In other words, the plurality of grooves 13 and the plurality of sealing members 2 are in one-to-one correspondence. Thus, by arranging the grooves 13, the sealing members 2 can be located in the grooves 13, so that the sealing members 2 can be prevented from being separated from the body part 1, thereby enhancing the connection stability of the sealing members 2 and the body part 1. Meanwhile, the grooves 13 can limit the sealing members 2 to a certain extent, thereby reducing the movement of the sealing members 2 and improving the reliability of the sealing members 2.

[0079] The cross-sectional shape of the groove 13 can be rectangular or circular, or the shape of the groove 13 can 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, and optionally referring to FIG. 4, the through hole 11 includes a plurality of sub-hole sections 111 with different cross-sectional areas, adjacent sub-hole sections 111 define a stepped surface 14, and at least one stepped surface 14 is provided with a groove 13.

[0081] For example, the through hole 11 includes two sub-hole sections 111, or three sub-hole sections 111, or four sub-hole sections 111, which are not limited herein, and the plurality of sub-hole sections 111 are sequentially connected along the axial direction of the through hole 11 to ensure that the through hole 11 can pass through along its axial direction.

[0082] The "cross-sectional area" in "a plurality of sub-hole sections 111 with different cross-sectional areas" refers to the cross-sectional area of the sub-hole section 111 in a cross section perpendicular to the axial direction of the through hole 11. For example, if the sub-hole section 111 is a cylindrical hole, the cross-sectional area is the radial cross-sectional area of the sub-hole section 111. Of course, the sub-hole section 111 can also be configured in other shapes, which are not limited herein.

[0083] "at least one stepped surface 14 is provided with a groove 13" includes that at least one stepped surface 14 of the plurality of stepped surfaces 14 is provided with a groove 13, or each stepped surface 14 of the plurality of stepped surfaces 14 is provided with a groove 13.

[0084] Thus, by arranging the through hole 11 to include a plurality of sub-hole sections 111 with different cross-sectional areas, the plurality of sub-hole sections 111 can cooperate with the portions of the first connecting member 20 with different cross-sectional area sizes when the nut 10 is used, and the groove 13 is arranged on the stepped surface 14 to facilitate the arrangement of the groove 13, reduce the production difficulty, and thus reduce the assembly difficulty of the sealing member 2 and the groove 13.

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

[0086] The "axial end surface of the nut 10 is provided with the groove 13" includes that the end surface of the axial one end (such as the upper end in FIG. 4) of the nut 10 is provided with the groove 13, or the end surface of the axial other end (such as the lower end in FIG. 4) of the nut 10 is provided with the groove 13, or the end surfaces of the axial one end (such as the upper end in FIG. 4) and the other end (such as the lower end in FIG. 4) of the nut 10 are both provided with the groove 13, which is not limited herein.

[0087] Therefore, by arranging the groove 13 on the axial end surface of the nut 10, the sealing element 2 is located at the axial end surface of the nut 10, so that when the axial end surface of the nut 10 abuts against the first fixing element 600 or other structures, the sealing element 2 located at the axial end surface of the nut 10 can realize the sealing between the axial end surface of the nut 10 and the first fixing element 600 or other structures, and meanwhile, the sealing element 2 located at the axial end surface of the nut 10 can enhance the sealing effect of the through hole 11 in the circumferential direction of the axial one end of the through hole 11.

[0088] According to some embodiments of the present application, optionally, please continue to refer to FIG. 4, the through hole 11 includes a first sub-hole section 1111 and a second sub-hole section 1112, the first sub-hole section 1111 is a light hole, the second sub-hole section 1112 is provided with an internal thread 12, the cross-sectional area of the second sub-hole section 1112 is greater than that of the first sub-hole section 1111, the first sub-hole section 1111 and the second sub-hole section 1112 define a stepped surface 14 provided with the groove 13, and the end surface of the nut 10 adjacent to the second sub-hole section 1112 is provided with the groove 13. By arranging the through hole 11 to include the first sub-hole section 1111 and the second sub-hole section 1112, the first sub-hole section 1111 and the second sub-hole section 1112 can be connected and matched with different structures, respectively.

[0089] The "light hole" refers to that the inner wall of the first sub-hole section 1111 is a smooth or approximately smooth wall surface, so that when the fixed connecting element 30 is arranged in the nut 10, the light hole can reduce the friction between the fixed connecting element 30 and the nut 10, thereby improving the assembly efficiency.

[0090] The second sub-hole section 1112 is provided with the internal thread 12, and the cross-sectional area of the second sub-hole section 1112 is greater than that of the first sub-hole section 1111, so as to define the stepped surface 14 between the first sub-hole section 1111 and the second sub-hole section 1112, and the stepped surface 14 is oriented in the axial direction of the second sub-hole section 1112.

[0091] In this way, when the groove 13 is arranged on the stepped 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, facilitate the placement of the sealing member 2 into the groove 13, and reduce the difficulty of arranging the sealing member 2 in the groove 13. Meanwhile, the internal thread 12 is arranged on the inner wall of the second sub-hole section 1112, so as to increase the size of the internal thread 12, thereby increasing the connection stability of the nut 10 and other structures when the nut 10 is connected with other structures.

[0092] Further, the end surface (the lower end in FIG. 4) of the nut 10 adjacent to the second sub-hole section 1112 is provided with the groove 13, so that the two grooves 13 are arranged on the two axial sides of the second sub-hole section 1112 respectively. Thus, when the nut 10 is connected with other structures through thread cooperation, the sealing members 2 arranged in the two grooves 13 can realize sealing on the two axial sides of the internal thread 12, thereby enhancing the sealing effect in the axial direction of the through hole 11. Meanwhile, the sealing member 2 is annular, so as to enhance the sealing effect in the circumferential direction of the through hole 11. In this way, the sealing effect of the nut 10 is enhanced.

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

[0094] Therefore, by arranging the sealing member 2 as an elastic sealing ring, i.e., the sealing member 2 has a certain elastic deformation performance, the sealing effect can be enhanced through the elastic deformation of the elastic sealing ring when the nut 10 is used, and rigid contact of the structure at the sealing position can be avoided, i.e., the interference of the structure at the sealing position is reduced, thereby improving the sealing effect, and the structure of the sealing member 2 is simpler, so as to reduce the production cost.

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

[0096] Secondly, referring to FIG. 2, FIG. 2 is a sectional structure schematic view of the connection structure 100 when the connection structure 100 connects the first fixing member 600 and the second fixing member 700. The connection structure 100 is used to connect the first fixing member 600 and the second fixing member 700. Referring to FIG. 2, the connection structure 100 comprises the nut 10 in any of the above embodiments, and the sealing member 2 is used to seal the gap between the connection structure 100 and the first fixing member 600.

[0097] Therefore, by arranging the nut 10, the gap between the connection structure 100 and the first fixing member 600 can be sealed by the sealing member 2 when the first fixing member 600 and the second fixing member 700 are connected through the nut, so as to enhance the connection sealing effect between the first fixing member 600 and the second fixing member 700 when the first fixing member 600 and the second fixing member 700 are fixedly connected.

[0098] According to some embodiments of the present application, referring to Fig. 2, the connecting structure 100 comprises a first connecting piece 20 and a fixed connecting piece 30.

[0099] The first connecting piece 20 is adapted to be fixed to the first fixing piece 600, the first connecting piece 20 is threadedly matched with the inner thread 12, a sealing piece 2 is arranged between the body part 1 and the first connecting piece 20, a sealing piece 2 is arranged between the body part 1 and the first fixing piece 600, the fixed connecting piece 30 is abutted against the second fixing piece 700, and the fixed connecting piece 30 is fixedly connected with the first connecting piece 20 through the second fixing piece 700 and the through hole 11.

[0100] Therefore, by setting the first connecting piece 20 adapted to be fixed to the first fixing piece 600 and the fixed connecting piece 30 fixedly connected with the first connecting piece 20 through the second fixing piece 700 and the through hole 11, the connection and fixation of the first fixing piece 600 and the second fixing piece 700 are realized through the cooperation of the fixed connecting piece 30, the nut 10 and the first connecting piece 20.

[0101] The first fixing piece 600 and the second fixing piece 700 can be two structures that need to be connected and fixed, for example, when the nut 10 is applied to fix the chemical bin 200 to the vehicle body, the first fixing piece 600 is the chemical bin 200, and the second fixing piece 700 is the vehicle body cross beam 500 or the seat cross beam, or when the nut 10 is applied to other structures, the first fixing piece 600 and the second fixing piece 700 can also be other structures, which are not limited herein.

[0102] Further, when the first fixing piece 600 and the second fixing piece 700 are connected and fixed by the connecting structure 100, the fixed connecting piece 30 is abutted against the second fixing piece 700, which can avoid the disconnection of the fixed connecting piece 30 and the second fixing piece 700, thereby enhancing the connection stability of the fixed connecting piece 30 and the second fixing piece 700, and by setting the first connecting piece 20 threadedly matched with the inner thread 12 of the nut 10, the connection stability of the nut 10 and the first connecting piece 20 is enhanced, and the threaded matching mode is simpler, thereby facilitating the improvement of assembly efficiency.

[0103] The sealing piece 2 is arranged between the body part 1 and the first connecting piece 20, which can realize the sealing of the connection between the body part 1 and the first connecting piece 20, and the sealing piece 2 is arranged between the body part 1 and the first fixing piece 600, which can realize the sealing of the connection between the body part 1 and the first fixing piece 600, so that the connection between the body part 1 and the first connecting piece 20 and the connection between the body part 1 and the first fixing piece 600 can both realize sealing through the corresponding sealing piece 2, thereby enhancing the connection sealing performance of the first fixing piece 600 and the second fixing piece 700.

[0104] According to some embodiments of the present application, optionally, the fixed connecting piece 30 is threadedly connected with the first connecting piece 20.

[0105] Thus, by setting the fixed connecting piece 30 threadedly connected with the first connecting piece 20, the connection stability of the fixed connecting piece 30 and the first connecting piece 20 is enhanced, and the threadedly connected manner is simpler, so as to improve the assembly efficiency.

[0106] For example, the fixed connecting piece 30 can be a bolt or other structure that can be threadedly connected with the first connecting piece 20.

[0107] According to some embodiments of the present application, optionally, referring to FIGS. 2 and 3, a sealing glue layer 50 is arranged between the first connecting piece 20 and the internal thread 12.

[0108] Thus, by setting the sealing glue layer 50, the sealing glue layer 50 can fill the gap at the connection between the first connecting piece 20 and the internal thread 12 when the first connecting piece 20 is threadedly connected with the internal thread 12, so as to realize the sealing of the connection between the first connecting piece 20 and the internal thread 12 through the sealing glue layer 50, thereby enhancing the connection sealing property of the first connecting piece 20 and the internal thread 12.

[0109] According to some embodiments of the present application, optionally, referring to FIG. 2, the connecting structure 100 further comprises a sleeve 40, the sleeve 40 is sleeved to the fixed connecting piece 30, and the sleeve 40 is adapted to be penetrated by the second fixing piece 700.

[0110] Thus, by setting the sleeve 40, when the fixed connecting piece 30 penetrates the second fixing piece 700, the sleeve 40 is sleeved to the fixed connecting piece 30, so that the structural strength of the connection between the second fixing piece 700 and the fixed connecting piece 30 can be enhanced through the sleeve 40, the deformation of the second fixing piece 700 is reduced, and the sleeve 40 can avoid the direct contact between the fixed connecting piece 30 and the second fixing piece 700, so as to avoid the interference between the fixed connecting piece 30 and the second fixing piece 700, and meanwhile, the sleeve 40 can also play a guiding role for the fixed connecting piece 30, so as to improve the assembly efficiency of the fixed connecting piece 30.

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

[0112] Thus, by setting the above connecting structure 100, the connection and fixation of the first fixing piece 600 and the second fixing piece 700 of the vehicle 1000 can be realized, and the connection sealing property of the first fixing piece 600 and the second fixing piece 700 is enhanced.

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

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

[0115] Therefore, the chemical bin 200 and the vehicle body cross beam 500 are connected through the connection structure 100, which can realize the connection and fixation of the chemical bin 200 and the vehicle body cross beam 500, and can enhance the connection sealing property of the chemical bin 200 and the vehicle body cross beam 500.

[0116] Of course, the second fixing member 700 can also be a seat cross beam, or a vehicle body longitudinal beam, or a vehicle body floor or other structure, which is not limited here.

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

[0118] The "partition beam 201" refers to the inherent structure in the chemical bin 200, and the partition beam 201 is a structural beam for separating multiple battery cells 205 to reduce the risk of thermal runaway, and the partition beam 201 is usually located inside the chemical bin 200.

[0119] It should be noted that in the related art, when the chemical bin 200 is fixed to the vehicle body cross beam 500, the outer shell of the chemical bin 200 is directly fixed to the vehicle body cross beam 500, but due to the size limitation of the outer shell of the chemical bin 200, the connection points between the chemical bin 200 and the vehicle body cross beam 500 are less, which results in a large load on a single connection point, and there is a risk of disconnection of the connection point during vehicle driving.

[0120] In the embodiments of the present application, the first connecting member 20 is fixed to the partition beam 201, so as to connect the partition beam 201 and the vehicle body cross beam 500 through the connection structure 100, which can increase the number of connection points between the vehicle body cross beam 500 and the chemical bin 200, thereby reducing the load on other connection points between the chemical bin 200 and the vehicle body cross beam 500, and further enhancing the connection stability of the chemical bin 200 and the vehicle body cross beam 500, and reducing the risk of disconnection of the connection point during vehicle driving.

[0121] At the same time, in the axial direction of the through hole 11 of the nut 10, the body part 1 is provided with a plurality of annular sealing members 2, which can realize sealing at the connection point, and further block the path of water and gas entering the chemical bin 200, so as to meet the sealing requirement of the chemical bin 200.

[0122] According to some embodiments of the present application, and optionally, with reference to Fig. 2, the first connecting member 20 is arranged to pass 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 arranged to pass through the partition beam 201 to enhance the stability of the connection 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, i.e., the arrangement of the first connecting member 20 does not additionally occupy space in the chemical bin 200, thereby reasonably utilizing the space in the chemical bin 200 and improving the space utilization rate, which is conducive to ensuring the energy density of the battery.

[0124] For example, the first connecting member 20 is arranged to pass through the partition beam 201 to enhance the stability of the connection 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, i.e., the arrangement of the first connecting member 20 does not additionally occupy space in the chemical bin 200, thereby reasonably utilizing the space in the chemical bin 200 and improving the space utilization rate, which is conducive to ensuring the energy density of the battery.

[0125] For example, the first connecting member 20 is arranged to pass through the partition beam 201 to enhance the stability of the connection 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, i.e., the arrangement of the first connecting member 20 does not additionally occupy space in the chemical bin 200, thereby reasonably utilizing the space in the chemical bin 200 and improving the space utilization rate, which is conducive to ensuring the energy density of the battery.

[0126] For example, the first connecting member 20 is arranged to pass through the partition beam 201 to enhance the stability of the connection 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, i.e., the arrangement of the first connecting member 20 does not additionally occupy space in the chemical bin 200, thereby reasonably utilizing the space in the chemical bin 200 and improving the space utilization rate, which is conducive to ensuring the energy density of the battery.

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

[0128] According to some embodiments of the present application, and optionally, the chemical bin 200 comprises a heat exchange plate 202 for heat exchange of the battery cell 205, and the heat exchange plate 202 defines a top wall of the chemical bin 200.

[0129] In actual assembly, the first connecting member 20 is sequentially threaded through the partition beam 201 and the heat exchange plate 202, and then the nut 10 is screwed on the first connecting member 20. After being screwed, the sealing member 2 at the end face of the axial lower end of the nut 10 is pressed against the heat exchange plate 202, and the sealing member 2 at the stepped face 14 is pressed against 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 fixing connecting member 30 is sequentially threaded through the sleeve 40 and the nut 10, and is screwed at the internal thread of the first connecting member 20.

[0131] In this way, the partition beam 201 of the chemical bin 200 is connected with the vehicle body cross beam 500 through the fixing connecting member 30, the sleeve 40, the nut 10 and the first connecting member 20, so as to connect the chemical bin 200 to the vehicle body.

[0132] Among them, the water and air inlet path is blocked, and the connection point is sealed through the plurality of sealing members 2, the partition 22 and the sealing adhesive layer 50, so as to seal the chemical bin 200.

[0133] According to some embodiments of the present application, a nut 10 is provided. The nut 10 comprises a body part 1 having a through hole 11, at least a portion of the through hole 11 being formed with an internal thread 12, and a plurality of annular sealing members 2 being arranged on the body part 1 in the axial direction of the through hole 11. When the chemical bin 200 is connected and fixed to the vehicle body by using such a nut 10, the plurality of sealing members 2 are distributed in the axial direction of the through hole 11, so that the plurality of sealing members 2 can enhance the sealing effect of the nut 10 in the axial direction of the through hole 11. In this way, the sealing effect of the nut 10 is facilitated to be enhanced, and the connection point can be sealed, thereby blocking the path of water and air entering the chemical bin 200, so as to meet the sealing requirements of the chemical bin 200.

[0134] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; 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 be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A nut, wherein, Comprise: A body portion having a through hole, at least a portion of the through hole being formed with internal threads; In the axial direction of the through hole, the body portion is provided with a plurality of annular seals.

2. The nut of claim 1, wherein, The body portion is provided with a plurality of grooves, and each groove is provided with a seal.

3. The nut of claim 2, wherein, The through hole comprises a plurality of sub-hole sections with different cross-sectional areas, and adjacent sub-hole sections define a stepped surface, at least one of which is provided with a groove.

4. The nut of claim 3, wherein, The axial end surface of the nut is provided with the groove.

5. The nut of claim 3 or 4, wherein, The through hole comprises a first sub-hole section and a second sub-hole section, the first sub-hole section is a light hole, the second sub-hole section is provided with the internal threads, the cross-sectional area of the second sub-hole section is greater than that of the first sub-hole section, the first sub-hole section and the second sub-hole section define the stepped surface provided with the groove, and the end surface of the nut adjacent to the second sub-hole section is provided with the groove.

6. The nut of any one of claims 1-5, wherein, The seal is an elastic seal ring.

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

8. The connection structure according to claim 7, wherein The connecting structure comprises: A first connecting member adapted to be fixed to the first fixing member; The first connecting member is threadedly connected with the internal threads, the body portion and the first connecting member are provided with the seal, and the body portion and the first fixing member are provided with the seal; A fixed connecting member abutting against the second fixing member, the fixed connecting member is fixedly connected with the first connecting member through the second fixing member and the through hole.

9. The connection structure according to claim 8, wherein The fixed connecting member is threadedly connected with the first connecting member.

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

11. The connection structure according to any one of claims 8-10, wherein, Further comprising a sleeve sleeved to the fixed connecting member, and the sleeve is adapted to pass through the second fixing member.

12. A vehicle, wherein, The connecting structure comprises the connecting structure according to any one of claims 7-11.

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

14. The vehicle of claim 13, wherein, The connecting structure further comprises a first connecting member, and the chemical bin is provided with a partition beam, and the first connecting member is fixed to the partition beam.

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

16. The vehicle of any one of claims 13-15, wherein, The chemical bin comprises a heat exchange plate for heat exchange of an electric core, and the heat exchange plate defines a top wall of the chemical bin.

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