Hanging assembly, hanging device, battery changing battery pack and electric vehicle

Abstract

The invention discloses a hitching assembly, a hitching device, a battery pack and an electric automobile, the hitching assembly comprises a hitching piece and a mounting shell, the hitching piece is used for realizing mutual locking with a hitching seat, and the hitching seat is connected to the electric automobile and is used for being matched with the hitching piece on the battery pack to mount the battery pack to the electric automobile; the hanging piece is meshed with the mounting shell, enters the hanging seat under the action of external force and is hung and buckled on the hanging seat after rotating by an angle; the hooking assembly comprises a first meshing piece and a second meshing piece, the first meshing piece is fixed in the mounting shell, the second meshing piece is connected with the hooking piece, and the second meshing piece is located in the mounting shell and can move in the mounting shell. According to the battery pack hanging device, the hanging piece is hung on the hanging seat in a rotating mode, so that a large gap is not needed between the hanging piece and the hanging seat, the hanging piece can be stably hung on the hanging seat, and the hanging stability of the battery pack is improved.

Description

[0001] This application is a division of a Chinese invention patent with an application date of December 31, 2021, application number 2021116736392, and name “hook seat, hook assembly, hook device, battery replacement pack and electric vehicle”. Technical Field

[0002] The invention relates to a hooking assembly, a hooking device, a battery replacement pack and an electric vehicle. Background Art

[0003] The battery packs of existing electric vehicles are generally divided into fixed and replaceable types. Among them, fixed battery packs are generally fixed on the vehicle, and the vehicle is directly used as the charging object during charging. The replaceable battery pack is generally fixed on the vehicle bracket through a movable installation method. The battery pack can be removed for separate replacement or charging operations. After the replaced battery pack is charged, it can be installed on the vehicle.

[0004] In the prior art, battery packs can be replaced manually or automatically. Regardless of which method is used, the battery must be locked on the bracket when the battery is installed on the vehicle bracket. Currently, multiple lock shafts are set on both sides of the battery pack and hung in the lock grooves of the lock base on the bracket to connect the battery pack to the bracket. For wider battery packs, there is no connection support between the middle area of ​​the battery pack away from the locking positions on both sides or all around and the chassis of the heavy truck, which makes it easy to find sinking in the middle area of ​​the battery pack, causing the battery pack to deform and have poor seismic performance.

[0005] The battery pack in the prior art is generally locked to the bottom of the electric vehicle by a buckle. During the installation of the battery pack, this locking method requires the battery swap equipment to move the battery pack to a certain height in the vertical direction and then move the battery pack horizontally to the locking position. On the one hand, it leads to a complex structure of the battery swap equipment and relatively high electrical control requirements. On the other hand, it is necessary to reserve space for the horizontal movement of the battery pack at the bottom of the electric vehicle, which makes the movement of the battery pack easily restricted by the space at the bottom of the electric vehicle, resulting in high difficulty in locking control of the battery pack and low battery swap efficiency. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defects in the prior art that the battery pack locking control is difficult, the battery replacement efficiency is low and it is easily limited by the bottom space of the electric vehicle, and to provide a hanging assembly, a hanging device, a battery replacement battery pack and an electric vehicle.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] A hanging assembly, comprising a hanging member and a mounting shell, wherein the hanging member is used to realize mutual locking with the hanging seat as described above, the hanging member is engaged with the mounting shell, and the hanging member enters the hanging seat under the action of an external force and is hooked on the hanging seat after rotating an angle;

[0009] The second engaging member comprises a matching portion, an elastic portion and an engaging portion arranged in sequence from top to bottom, two ends of the elastic portion abut against the matching portion and the engaging portion respectively, and the lower end of the hanging member is connected to the matching portion;

[0010] In the first state, the engagement portion is engaged with the first engagement member, and the matching portion is disengaged from the engagement portion;

[0011] In the second state, the meshing portion is disengaged from the first meshing member, and the matching portion cooperates with the meshing portion, so that the meshing portion drives the matching portion and the hanging member to rotate.

[0012] In this solution, the hanging member and the above-mentioned hanging seat are locked with each other to achieve the hanging of the battery pack on the electric vehicle. The above-mentioned structural form does not require a large gap between the hanging member and the hanging seat, so that the hanging member can be stably hung on the hanging seat, which improves the stability of the battery pack hanging, and the above-mentioned method increases the hanging points of the battery pack and the electric vehicle, avoiding the deformation of the battery pack caused by sinking in the middle area due to excessive size. The first engaging member is fixed in the mounting shell. In the first state, the first engaging member and the second engaging member are engaged, and the second engaging member can be limited by the first engaging member to prevent the second engaging member from rotating, and then the hanging member can be limited by the second engaging member to improve the stability of the hanging member. In the second state, under the action of external force, the second engaging member moves up in the mounting shell, so that the second engaging member is disengaged from the first engaging member. After being disengaged, the second engaging member can drive the hanging member to rotate because there is no restriction from the first engaging member. Therefore, in the second state, the second engaging member can rotate to drive the hanging member to rotate to a certain angle and then hook onto the hanging seat, thereby realizing the hanging of the battery pack and the hanging seat.

[0013] Preferably, the second engaging member comprises a matching portion, an elastic portion and an engaging portion arranged in sequence from top to bottom, two ends of the elastic portion abut against the matching portion and the engaging portion respectively, and the lower end of the hanging member is connected to the matching portion;

[0014] In the first state, the engagement portion is engaged with the first engagement member, and the matching portion is disengaged from the engagement portion;

[0015] In the second state, the meshing portion is disengaged from the first meshing member, and the matching portion cooperates with the meshing portion, so that the meshing portion drives the matching portion and the hanging member to rotate.

[0016] In the present solution, the above-mentioned structural form is adopted. In the first state, the meshing portion is meshed with the first meshing member. The meshing portion after meshing cannot rotate under the restriction of the first meshing member. At this time, under the action of the elastic portion, the matching portion is disengaged from the meshing portion. In the second state, under the action of external force, the meshing portion moves up and disengages from the first meshing member, and the matching portion extends into the meshing portion to achieve matching with the meshing portion. At this time, driven by the external force, the meshing portion can drive the matching portion and the hanging member to rotate an angle and then hook on the hanging seat, thereby realizing the hanging of the battery pack and the hanging seat.

[0017] Preferably, a rotation guide groove is provided in the mounting shell, and the hanging member moves along the rotation guide groove.

[0018] In this solution, the above-mentioned structural form is adopted, and the hanging member can be guided by the rotating guide groove, and the stability of the movement of the hanging member is improved through the cooperation between the rotating guide groove and the hanging member.

[0019] Preferably, the hanging assembly further comprises a guide member, wherein the guide member is arranged in the mounting shell, and the rotation guide groove is located in the guide member.

[0020] In the present solution, the above-mentioned structural form is adopted. If one of the guide member and the mounting shell is damaged, only the damaged guide member and mounting shell need to be replaced for normal use. In addition, when different hanging parts are suitable for different rotating guide grooves, only the guide member can be replaced, which reduces the cost of use.

[0021] Preferably, the hanging member includes a connecting portion and a hanging portion, one end of the connecting portion is engaged with the battery pack, the connecting portion has a connecting hole, the hanging portion passes through the connecting hole, and is connected to the connecting portion.

[0022] In this solution, the above-mentioned structural form is adopted, and the hanging part is connected to the connecting part by passing through the connecting hole, thereby improving the strength of the connecting part and the hanging part.

[0023] Preferably, the number of the hanging areas is two, the two hanging areas are located on both sides of the bottom of the accommodating cavity, the two ends of the hanging member have two hanging parts, and the hanging parts and the hanging areas are hung in a one-to-one correspondence.

[0024] In this solution, the above-mentioned structural form is adopted, the two hanging parts are located at the two ends of the hanging piece, and the hanging area is located on both sides of the bottom of the accommodating cavity, and each hanging part and the hanging area correspond one to one, thereby improving the hanging stability of the hanging piece, and further improving the stability of the battery pack hanging on the electric vehicle.

[0025] Preferably, two ends of the hanging portion exposed from the connecting portion are provided with shaft sleeves, and the hanging portion is in contact with the hanging area through the shaft sleeves.

[0026] In this solution, the above-mentioned structural form is adopted to reduce friction through the shaft sleeve, thereby ensuring the stability of the hanging part and the hanging seat and extending the service life; at the same time, the two ends of the hanging part are evenly stressed, thereby improving the stability of the battery pack.

[0027] Preferably, retaining rings are provided at both ends of the hanging portion, and the retaining rings are provided on a side of the sleeve away from the connecting portion, and the retaining rings are used to limit the sleeve from being separated from the hanging portion.

[0028] In this solution, the above-mentioned structural form is adopted, and the retaining ring has a blocking effect, which ensures that the sleeve will not fall off during use and improves stability; at the same time, the structure is simple and the installation and setting are very convenient.

[0029] Preferably, grooves are provided on both sides of the hanging portion, and the grooves are used to install the shaft sleeve.

[0030] In this solution, the above-mentioned structural form is adopted, and the groove plays a limiting role, which further ensures that the sleeve will not fall off during use, thereby improving stability; at the same time, the groove makes the installation accuracy of the sleeve higher, and the structure is simple, and the installation and setting are very convenient.

[0031] Preferably, the hanging member further comprises a fixing portion, the fixing portion extends from an upper end of the connecting portion and passes through the hanging portion, and the fixing portion is used to connect the connecting portion and the hanging portion.

[0032] In this solution, the above-mentioned structural form is adopted, and the fixing part extends from the upper end of the connecting part into and passes through the hanging part to fix the connecting part and the hanging part, so that the connection between the hanging part and the connecting part is very convenient and has high stability.

[0033] Preferably, a guiding inclined surface is provided at the upper end of the hanging member.

[0034] In this solution, the above-mentioned structural form is adopted, and the guiding inclined surface allows the high-precision hanging part to move in a predetermined direction without causing deviation or dislocation during the movement process, thereby improving the accuracy and stability of the connection.

[0035] Preferably, the hanging seat includes: a hanging seat body, a accommodating cavity is provided in the hanging seat body, the accommodating cavity is used to accommodate at least part of the hanging member, the bottom of the accommodating cavity has a transition area and a hanging area, the transition area and the hanging area have a smooth transition, the height of the transition area in the vertical direction is lower than the height of the hanging area; the transition area is used for the hanging member to rotate from the transition area to the hanging area, and when the hanging seat is locked with the hanging member, the hanging member is located in the hanging area.

[0036] In the present solution, the above-mentioned structural form is adopted, and the hanging part is hung with the hanging seat by rotating. The above-mentioned method does not require a large gap between the hanging part and the hanging seat, so that the hanging part can be stably hung on the hanging seat, thereby improving the stability of the battery pack hanging. The above-mentioned method increases the hanging points of the battery pack and the electric vehicle, avoiding the deformation of the battery pack due to sinking of the middle area due to its excessive size.

[0037] Preferably, an opening is provided at the bottom of the hanging seat body, and the opening is used for allowing the hanging member to enter the accommodating cavity.

[0038] In this solution, the above-mentioned structural form is adopted to facilitate the hanging part to enter the accommodating cavity through the opening.

[0039] Preferably, the number of the transition area and the number of the hanging area are both plural, and the multiple transition areas and the multiple hanging areas are symmetrically arranged on both sides of the opening.

[0040] In this solution, the above-mentioned structural form is adopted to improve the stability of the rotation and hanging of the hanging member.

[0041] Preferably, the mounting seat has a mounting plate, the transition area and the mounting area are both arranged on the mounting plate, and when the mounting member reaches the mounting area, the mounting member is supported on the mounting plate.

[0042] In this solution, the above-mentioned structural form is adopted, and the transition area and the hanging area are both set on the hanging plate, so that the transition area and the hanging area can be integrated, saving the use cost, and there is no need to set the hanging area and the transition area separately, thereby improving space utilization.

[0043] Preferably, the hanging area on the hanging plate is provided with a cushioning structure.

[0044] In this solution, the above-mentioned structural form is adopted, and the height difference between the hanging area and the transition area can be changed by the raising structure, so that the hanging part can be stably hung on the hanging area, and by changing the thickness of the raising structure, the applicability of the hanging seat to each hanging part can also be increased.

[0045] Preferably, a matching hole is provided on the top of the hanging seat body, and the matching hole is used for the hanging member to avoid the hanging member when the hanging member moves in the accommodating cavity.

[0046] In this solution, the above-mentioned structural form is adopted, and the influence of the mounting seat on the movement of the mounting member is reduced through the matching hole on the top of the mounting seat body. During the rotation process, as the mounting member approaches the mounting area, the mounting member has an upward displacement, and the protrusion on the mounting member can extend out of the mounting seat through the matching hole, thereby preventing the protrusion and the mounting seat from being squeezed and damaged, thereby increasing the service life of the mounting member and the mounting seat.

[0047] Preferably, the mounting seat further comprises a mounting portion, the mounting portion is arranged on at least two sides of the top of the mounting seat body, and the mounting portion has a plurality of mounting holes for mounting the mounting seat on the electric vehicle.

[0048] In this solution, the above-mentioned structural form is adopted, and the connection between the mounting seat body and the chassis of the electric vehicle can be achieved through the mounting holes on the mounting part.

[0049] A hooking device comprises the hooking seat as described above and the hooking assembly as described above.

[0050] In the present solution, the above-mentioned structural form is adopted, and the hanging part is hung on the hanging seat by rotating. The above-mentioned method does not require a large gap between the hanging part and the hanging seat, so that the hanging part can be stably hung on the hanging seat, thereby improving the stability of the hanging part hanging on the hanging seat.

[0051] A battery replacement pack comprises a battery pack and the above-mentioned hanging assembly, wherein the hanging assembly and the hanging seat can be locked with each other.

[0052] In the present solution, the above-mentioned structural form is adopted, and the hanging part is hung with the hanging seat by rotating. The above-mentioned method does not require a large gap between the hanging part and the hanging seat, so that the hanging part can be stably hung on the hanging seat, thereby improving the stability of the battery pack hanging. The above-mentioned method increases the hanging points of the battery pack and the electric vehicle, avoiding the deformation of the battery pack due to sinking of the middle area due to its excessive size.

[0053] Preferably, the battery pack includes a battery pack body and a battery rack, the battery rack is circumferentially arranged along the outer surface of the battery pack body, and the mounting shell is respectively connected to the battery pack body and the battery rack.

[0054] In this solution, the above-mentioned structural form is adopted, and the mounting shell is connected to the battery pack body and the battery rack respectively, which improves the stability of the battery pack being hung on the chassis. That is, the hanging parts located on the battery pack body and the mounting shell located on the battery rack can both be connected to the battery pack, thereby improving the stability of the battery pack being hung on the chassis.

[0055] Preferably, the battery pack body has a reinforcing beam, the mounting shell passes through the reinforcing beam and is connected to the upper surface of the reinforcing beam via a fixed base located on the side wall of the mounting shell, the bottom of the hanging member is connected to the mounting shell, the hanging member passes through the reinforcing beam and the battery pack body, and protrudes from the upper surface of the battery pack body.

[0056] In this solution, the above-mentioned structural form is adopted, and the connection between the hanging part and the battery pack body is realized by connecting the fixed base and the reinforcing beam inside the battery pack body. The part of the hanging part protruding from the upper surface of the battery pack body can be hung with the hanging seat, thereby realizing the hanging of the battery pack body on the chassis of the electric vehicle.

[0057] Preferably, the hanging assembly also includes a seal, which is connected to one end of the mounting shell away from the reinforcing beam and is used to seal the battery pack body and the mounting shell. One end of the seal extends into the mounting shell and fits against the inner wall of the mounting shell, and the other end of the seal is connected to the upper surface of the battery pack body.

[0058] In this solution, the above-mentioned structural form is adopted, and the sealing member is used to prevent foreign objects from entering the battery pack from the mounting shell and affecting the service life of the battery pack.

[0059] Preferably, the mounting shell passes through the battery rack and is connected to the lower surface of the battery rack via a fixing base located at the bottom of the mounting shell, and the hanging member passes through the battery rack and protrudes from the upper surface of the battery rack.

[0060] In this solution, the above-mentioned structural form is adopted, and the base is fixedly connected to the lower surface of the battery rack. The tension applied to the mounting shell acts on the lower surface of the battery rack, so that the bolts are not subjected to tension, thereby preventing the bolts from being damaged and loosened, thereby improving the reliability of the connection between the battery pack and the chassis of the electric vehicle.

[0061] An electric vehicle, comprising the above-mentioned hitch seat, or the electric vehicle comprising the above-mentioned battery replacement battery pack.

[0062] The positive and progressive effects of the present invention are:

[0063] The hooking part is connected to the hooking seat by rotating. The above method does not require a large gap between the hooking part and the hooking seat, so that the hooking part can be stably connected to the hooking seat, which improves the stability of the battery pack connection. After lifting the battery pack in the vertical direction, this method can lock and fix the battery pack only by rotating the hooking part, avoiding the need to move the hooking part to the locking position by moving the battery pack. There is no need to reserve horizontal movement space for the battery pack at the bottom of the electric vehicle, which simplifies the steps of moving the battery pack, reduces the difficulty of locking control, and improves the efficiency of battery replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 It is a three-dimensional schematic diagram of the mounting base in Embodiment 1 of the present invention;

[0065] Figure 2 is another three-dimensional schematic diagram of the mounting base in Embodiment 1 of the present invention;

[0066] Figure 3 It is a cross-sectional schematic diagram of the mounting base in Embodiment 1 of the present invention;

[0067] Figure 4 is another cross-sectional schematic diagram of the mounting base in Embodiment 1 of the present invention;

[0068] Figure 5 It is a partial cross-sectional schematic diagram of the hanging assembly in Embodiment 2 of the present invention;

[0069] Figure 6 It is a partial schematic diagram of the hanging assembly in Embodiment 2 of the present invention;

[0070] Figure 7 is a three-dimensional schematic diagram of a hanging assembly in Embodiment 2 of the present invention;

[0071] Figure 8 is a cross-sectional schematic diagram of a hanging assembly in Embodiment 2 of the present invention;

[0072] Fig. 9 It is an exploded schematic diagram of the hanging assembly in Example 2 of the present invention;

[0073] Fig.10 It is an exploded cross-sectional schematic diagram of the hanging assembly in Example 2 of the present invention;

[0074] Fig.11 is a schematic diagram of a hanging assembly in Embodiment 2 of the present invention;

[0075] Fig.12 Schematic diagram of the guide member in Example 2 of the present invention.

[0076] Fig.13 A partial schematic diagram of a battery replacement pack in Embodiment 2 of the present invention;

[0077] Fig.14 It is a partial cross-sectional schematic diagram of a battery replacement battery pack in Embodiment 2 of the present invention;

[0078] Fig.15 It is a partial three-dimensional schematic diagram of the battery replacement battery pack in Embodiment 2 of the present invention;

[0079] Fig.16 is a schematic diagram of a hooking device in Embodiment 2 of the present invention;

[0080] Fig.17 is another schematic diagram of the hooking device in Embodiment 2 of the present invention;

[0081] Fig.18 is a first cross-sectional schematic diagram of a hooking device in Embodiment 2 of the present invention;

[0082] Fig.19 is a second cross-sectional schematic diagram of the hanging device in Embodiment 3 of the present invention;

[0083] Fig. 20 is a three-dimensional schematic diagram of a hooking device in Embodiment 3 of the present invention;

[0084] Fig.21 is a third cross-sectional schematic diagram of the hanging device in Embodiment 3 of the present invention;

[0085] Fig. 22 is a fourth cross-sectional schematic diagram of the hanging device in Embodiment 3 of the present invention;

[0086] Fig.23 It is a fifth cross-sectional schematic diagram of the hanging device in embodiment 3 of the present invention. DETAILED DESCRIPTION

[0087] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0088] Example 1

[0089] like Figures 1 to 4 As shown, an embodiment of the present invention provides a mounting seat 1, which is connected to an electric vehicle and is used to cooperate with a mounting member on a battery pack to install the battery pack on the electric vehicle. The mounting seat 1 includes a mounting seat body 11, and a receiving cavity 111 is provided in the mounting seat body 11, and the receiving cavity 111 is used to receive at least part of the mounting member, and the bottom of the receiving cavity 111 has a transition area 16 and a mounting area 15, and there is a smooth transition between the transition area 16 and the mounting area 15, and the height of the transition area 16 in the vertical direction is lower than the height of the mounting area 15; the transition area 16 is used for the mounting member to rotate from the transition area 16 to the mounting area 15, and when the mounting seat 1 is locked with the mounting member, the mounting member is located in the mounting area 15.

[0090] In specific use, when the hanging part enters the accommodating chamber 111 from the bottom of the hanging seat 1 in the vertical direction and rotates, it first contacts the transition area 16, and then moves in the direction close to the hanging area 15 under the continued action of external force. Since the height of the transition area 16 in the vertical direction is lower than the height of the hanging area 15, and the transition area 16 and the hanging area 15 are smoothly transitioned, the above structure first facilitates the rotation of the hanging part; secondly, during the rotation of the hanging part, the gap between the hanging part and the bottom of the accommodating chamber 111 becomes smaller and smaller. In the process of the gap becoming smaller, the pressure between the hanging part and the bottom of the accommodating chamber 111 becomes greater and greater. Taking the same material as the hanging area 15 and the transition area 16 as an example, when the materials of the two areas are the same, the dynamic friction generated by the hanging part and the transition area 16 will be greater than the dynamic friction generated by the hanging part and the hanging area 15. When the hanging part moves to the hanging area 15, since the gap between the hanging part and the hanging area 15 is the smallest, the friction generated at this time is also the largest, and finally the stable hanging of the hanging part is achieved. With the above structural form, the gap between the hanging part and the hanging seat 1 is minimized through the rotation movement of the hanging part, so that the hanging part can be stably hung on the hanging seat 1, which improves the stability of the battery pack hanging. In addition, the above method increases the hanging points of the battery pack and the electric vehicle, avoiding the deformation of the battery pack due to the sinking of the middle area caused by the excessive size. In other embodiments, different materials can be selected for the hanging area 15 and the transition area 16 to further reduce the friction between the hanging part and the transition area 16, and further increase the friction between the hanging part and the hanging area 15. The materials of the hanging area 15 and the transition area 16 are not restricted here. The external force mentioned above can be achieved by applying force to the hanging part by the unlocking device. In this way, after lifting the battery pack in the vertical direction, the battery pack can be locked and fixed only by rotating the hanging part, avoiding the need to move the hanging part to the locking position by moving the battery pack again. There is no need to reserve horizontal movement space for the battery pack at the bottom of the electric vehicle, which simplifies the steps of moving the battery pack, reduces the difficulty of locking control, and improves the efficiency of battery replacement.

[0091] The bottom of the mounting seat body 11 has an opening 12, and the opening 12 is used for the mounting member to enter the accommodating cavity 111. The transition area 16 mentioned above refers to the area at the bottom of the accommodating cavity 111 that the mounting member passes through during the process of rotating to the mounting area 15 after entering from the bottom opening 12 of the accommodating cavity 111. Specifically, since the battery pack is mounted on the chassis of the electric vehicle, the opening 12 is set at the bottom of the mounting seat body 11, which facilitates the mounting member to enter the accommodating cavity 111 from the opening 12 for mounting.

[0092] There are multiple transition areas 16 and multiple hanging areas 15, and the multiple transition areas 16 and multiple hanging areas 15 are symmetrically arranged on both sides of the opening 12. With the above structure, multiple transition areas 16 and multiple hanging areas 15 are arranged, which improves the path of the hanging member rotating after entering the accommodating cavity 111; multiple transition areas 16 and multiple hanging areas 15 are symmetrically arranged on both sides of the opening 12, so that during the rotation and hanging process of the hanging member, both ends of the hanging member can contact the bottom of the accommodating cavity 111, thereby improving the stability of the movement and hanging of the hanging member.

[0093] The mounting seat 1 has a mounting plate 40, and the transition area 16 and the mounting area 15 are both arranged on the mounting plate 40. When the mounting member reaches the mounting area 15, the mounting member is supported on the mounting plate 40. With the above-mentioned structural form, the transition area 16 and the mounting area 15 are both arranged on the mounting plate 40, so that the transition area 16 and the mounting area 15 can be integrated, saving the use cost, and there is no need to separately arrange the mounting area 15 and the transition area 16, thereby improving the space utilization. In other embodiments, the transition area 16 and the mounting area 15 can also be arranged in a split manner, which is not limited here.

[0094] During specific use, the hanging plate 40 is arranged at the bottom of the accommodating cavity 111, and the hanging plate 40 is provided with the above-mentioned opening 12, that is, the hanging area 15, the transition area 16 and the opening 12 are all integrated on the hanging plate 40. The adoption of the above method further improves the degree of integration of the hanging seat 1. Therefore, the hanging process of the battery pack can be specifically described as follows: the lower end of the hanging part is connected to the battery pack, and the upper end of the hanging part enters the accommodating cavity 111 from the opening 12 on the hanging plate 40 in the vertical direction under the action of external force. Since the opening 12, the hanging area 15 and the transition area 16 are all arranged on the hanging plate 40, when part of the hanging part enters the accommodating cavity 111, it is only necessary to change the direction of the force acting on the hanging part so that the hanging part can rotate. During the rotation process, the hanging part passes through the transition area 16 and the hanging area 15 on the hanging plate 40 in sequence. As the hanging part gets closer and closer to the hanging area 15, the gap between it and the hanging plate 40 becomes smaller and smaller, which makes the pressure between the hanging part and the hanging plate 40 greater and greater, and then during the rotation process, the friction between the hanging part and the hanging plate 40 becomes greater and greater. When the hanging part is hung on the hanging area 15, the gap between the hanging part and the hanging area 15 is the smallest, which makes the friction generated between the two maximum. Therefore, when the hanging part is hung on the hanging area 15, the larger friction force can also be used to prevent the hanging part from detaching from the hanging area 15 after hanging. The above method improves the reliability of the hanging part, and thus improves the stability of the battery pack hung on the electric vehicle 1000.

[0095] The above-mentioned hanging plate 40 can be realized by a stamping process, and the height of the transition area 16 in the vertical direction is lower than the height of the hanging area 15. After the above process, the hanging area 15 and the transition area 16 are integrally formed and have the characteristics of high strength. Alternatively, the hanging area 15 and the transition area 16 are in the same plane, and a cushioning structure is set in the hanging area 15. The above method will make the upper surface of the cushioning structure higher than the upper surface of the transition area 16, so when the hanging part rotates to the hanging area 15, the hanging part can be hung on the upper surface of the cushioning structure. In order to further improve the friction of the hanging part in the hanging area 15, the material of the cushioning structure is preferably rubber. Of course, in other embodiments, the material of the cushioning structure may not be restricted. With the above-mentioned structural form, a cushioning structure is set in the hanging area 15, and different hanging parts can be adapted by changing the thickness of the cushioning structure, thereby improving the flexibility of the hanging.

[0096] The top of the mounting seat body 11 has a matching hole 13, which is used to avoid the mounting member when the mounting member moves in the accommodating cavity 111. With the above-mentioned structural form, the matching hole 13 at the top of the mounting seat body 11 reduces the influence of the mounting seat 1 on the movement of the mounting member 21. During the rotation process, as the mounting member moves toward the mounting area 15, the mounting member has an upward displacement, and the protrusion on the mounting member can extend out of the mounting seat 1 through the matching hole 13, thereby preventing the protrusion and the mounting seat 1 from being squeezed and damaged, thereby increasing the service life of the mounting member and the mounting seat 1.

[0097] The mounting seat 1 also includes a mounting portion 14, which is arranged on at least two sides of the top of the mounting seat body 11, and the mounting portion 14 has a plurality of mounting holes for mounting the mounting seat 1 on the electric vehicle. Specifically, the top opening 12 of the mounting portion 14 extends outward to form the mounting portion 14, and at least two sides of the opening 12 extending outward to form the mounting portion 14. Alternatively, the mounting seat 1 also includes a mounting plate, which is connected to the top of the mounting seat body 11, and the portion of the mounting plate protruding from the mounting seat body 11 is the mounting portion 14. Of course, in other embodiments, the formation method of the mounting portion 14 may not be restricted. With the above-mentioned structural form, the mounting holes on the mounting portion 14 can be used to realize the connection between the mounting seat body 11 and the chassis of the electric vehicle, and the mounting portion 14 is arranged on at least two sides of the top of the mounting seat body 11, thereby increasing the connection area between the mounting portion 14 and the mounting seat 1, and improving the connection stability between the mounting portion 14 and the mounting seat 1. Preferably, the mounting portion 14 is symmetrically arranged on the top of the mounting seat body 11 to further improve the stability of the mounting.

[0098] Example 2

[0099] like Figures 5 to 18As shown, the embodiment of the present invention provides a hanging assembly 2, and the hanging assembly 2 and the hanging seat 1 can be locked with each other. The hanging assembly 2 includes a hanging member 21 and a mounting shell 24, the hanging member 21 is engaged with the mounting shell 24, and the hanging member 21 enters the hanging seat 1 under the action of external force and is hung on the hanging seat 1 after rotating an angle.

[0100] The hanging assembly 2 includes a first gearing 27 and a second gearing 28. The first gearing 27 is fixed in the mounting shell 24, and the second gearing 28 is connected to the hanging member 21. The second gearing 28 is located in the mounting shell 24 and can move in the mounting shell 24 to switch between the first state and the second state. In the first state, the first gearing 27 and the second gearing 28 are engaged. In the second state, the second gearing 28 is disengaged from the first gearing 27, and the second gearing 28 drives the hanging member 21 to rotate. The above statement can also be specifically expressed as: in the first state, since the first gearing 27 is fixed in the mounting shell 24, the first gearing 27 and the second gearing 28 are engaged, and then the second gearing 28 can be limited by the first gearing 27 to prevent the second gearing 28 from rotating. That is, the second gearing 28 prevents the hanging member 21 from rotating, so that the hanging member 21 is stably hung on the hanging seat 1. In the second state, under the action of external force, the second engagement member 28 moves upward and disengages from the first engagement member 27. Without the constraint of the first engagement member 27, the second engagement member 28 can be driven to rotate by the action of external force, so that the second engagement member 28 can drive the hanging member 21 to rotate, and finally the hanging portion 212 is hung on the hanging seat 1 after rotating by an angle. With the above-mentioned structural form, the first state is the state in which the hanging portion 212 is hung on the hanging seat 1, that is, the hanging member 21 is in the hanging area 15 at this time. In this state, the stability and reliability of the hanging are improved by preventing the rotation of the hanging member 21; the second state is the state in which the hanging portion 212 is not hung, that is, the hanging member 21 is in a state in which it does not reach the hanging area 15 at this time. In this state, the rotation of the hanging portion 212 can be realized by external force to realize the subsequent hanging.

[0101] The second engagement member 28 includes a matching portion 281, an elastic portion 282 and an engagement portion 283 arranged in sequence from top to bottom, the two ends of the elastic portion 282 are respectively in contact with the matching portion 281 and the engagement portion 283, and the lower end of the hanging member 21 is connected to the matching portion 281; in the first state, the engagement portion 283 is engaged with the first engagement member 27, and the matching portion 281 is disengaged from the engagement portion 283; in the second state, the engagement portion 283 is disengaged from the first engagement member 27, and the matching portion 281 is engaged with the engagement portion 283, so that the engagement portion 283 drives the matching portion 281 and the hanging member 21 to rotate. The above statement can be specifically described as follows: in the first state, since the first engagement member 27 is fixed in the mounting shell 24, the engaged engagement portion 283 cannot rotate under the restriction of the first engagement member 27, and at this time, under the action of the elastic portion 282, the matching portion 281 is disengaged from the engagement portion 283. In this state, even if an external force is applied, the hanging member 21 cannot rotate, thereby achieving reliable hanging. In the second state, under the action of external force, the meshing portion 283 moves upward, so that the meshing portion 283 is disengaged from the first meshing member 27, and the meshing portion 283 after moving upward compresses the elastic portion 282 to achieve the matching of the matching portion 281 and the meshing portion 283; at this time, driven by the external force, the meshing portion 283 rotates and then drives the matching portion 281 and the hanging member 21 to rotate an angle and then hook on the hanging seat 1, thereby achieving the hanging of the battery pack 31 and the hanging seat 1. Specifically, the mounting shell 24 can have an avoidance hole 29, and the unlocking device extends into the meshing cavity through the avoidance hole 29 to contact the hanging member 21. That is, in the second state, the unlocking device can first realize the upward movement of the meshing portion 283 and the disengagement of the first meshing member 27, and then the unlocking device drives the rotation of the matching portion 281 and the hanging member 21 through the meshing portion 283, and then the hanging portion 212 is hung with the hanging seat 1 through the unlocking device. After hanging, the unlocking device disengages from the meshing portion 283, and the meshing portion 283 moves downward under the action of the elastic portion 282. The meshing portion 283 after moving downward is engaged with the first meshing member 27, and finally a stable hanging is realized. The avoidance hole 29 can be located at the bottom of the mounting shell 24, which facilitates the hanging and removal of the battery pack 31.

[0102] In specific use, the meshing portion 283 has an inner hexagon, and the matching portion 281 has an outer hexagon that matches the inner hexagon; in the second state, the inner hexagon matches the outer hexagon to achieve the matching of the meshing portion 283 and the matching portion 281. Of course, in other embodiments, the meshing portion 283 can also be matched with the matching portion 281 in other ways, which is not limited again. In this embodiment, the elastic portion 282 is a spring. In other embodiments, the elastic portion 282 can also be other elastic components such as disc springs, which are not limited here.

[0103] The mounting shell 24 has a rotation guide groove 23, and the hanging member 21 moves along the rotation guide groove 23. With the above structure, the hanging member 21 can be guided by the rotation guide groove 23, and the cooperation between the rotation guide groove 23 and the hanging member 21 improves the stability of the movement of the hanging member 21.

[0104] The hook assembly 2 also includes a guide member 22, which is arranged in the mounting shell 24, and the rotation guide groove 23 is located in the guide member 22. With the above-mentioned structural form, if one of the guide member 22 and the mounting shell 24 is damaged, it is only necessary to replace the damaged guide member 22 and the mounting shell 24 to use it normally, and when different hook members 21 are suitable for different rotation guide grooves 23, only the guide member 22 can be replaced, thereby reducing the cost of use. Specifically, the rotation guide groove 23 is arranged along the circumference of the guide member 22, and the connecting portion 211 includes a hook body 2111 and a guide pin 2112, and the guide pin 2112 extends outward from the hook body 2111 in the horizontal direction. Through the cooperation of the guide pin 2112 and the rotation guide groove 23, the hook body 2111 can be guided during the movement, and the cooperation of the rotation guide groove 23 and the guide pin 2112 can also reduce the friction during the rotation of the hook member 21.

[0105] The guide member 22 is an annular structure, and a first groove 221 is provided on the outer side of the guide member 22. A stop pin 26 is provided in the first groove 221. The stop pin 26 partially protrudes from the outer wall of the guide member 22, and is used to position the guide member 22 to be installed in the mounting shell 24, and to limit the position of the guide member 22 in the mounting shell 24. With the above-mentioned structural form, the stop pin 26 prevents the guide member 22 from rotating in the mounting shell 24, that is, the stop pin 26 can limit the guide member 22. Specifically, the number of the first grooves 221 can be multiple, and the multiple first grooves 221 are symmetrically arranged on the outer side of the guide member 22, so as to achieve stable positioning of the guide member 22 by the stop pin 26.

[0106] A second groove is provided in the mounting shell 24, and the second groove matches the stop pin 26. With the above structure, the second groove forms an escape space for the stop pin 26, so that the stop pin 26 protruding from the guide member 22 can be inserted conveniently.

[0107] During specific use, the first groove 221 is first matched with the second groove, and then the guide pin 2112 is inserted to achieve positioning of the guide member 22.

[0108] The lower end of the hanging body 2111 has a first threaded portion, and the second engaging member 28 has a second threaded portion that cooperates with the first threaded portion, that is, the matching portion 281 is provided with a second threaded portion, and a stable connection between the hanging body 2111 and the matching portion 281 is achieved through threaded connection.

[0109] The first threaded portion is located below the guide pin 2112 , facilitating the connection between the hanging body 2111 and the second engaging member 28 .

[0110] The hanging member 21 includes a connecting portion 211 and a hanging portion 212. One end of the connecting portion 211 is engaged with the battery pack 31. The connecting portion 211 has a connecting hole. The hanging portion 212 passes through the connecting hole and is connected to the connecting portion 211. With the above structure, the hanging portion 212 and the connecting portion 211 can be processed and manufactured separately, ensuring the strength requirements of the hanging portion 212 and the connecting portion 211, and having the characteristics of not easy to deform and fast processing.

[0111] During specific use, the hanging portion 212 and the connecting portion 211 are both cylindrical, so that when they are in rotational contact with the hanging seat 1, the wear of the hanging seat 1 can be reduced, thereby increasing the service life.

[0112] There are two hanging areas 15, and the two hanging areas 15 are located on both sides of the bottom of the accommodating cavity 111. The two ends of the hanging member 21 have two hanging parts 212, and the hanging parts 212 and the hanging areas 15 are hung one by one. Specifically, the hanging part 212 passes through the connecting hole, and the two ends of the hanging part 212 are respectively matched and connected with the bottom of the electric vehicle. The connecting part 211 is connected to the chassis of the electric vehicle through the hanging part 212. The two ends of the hanging part 212 act on the bottom of the electric vehicle, which increases the hanging of the battery pack 31 and the bottom of the electric vehicle. On the one hand, it increases the connection points between the battery pack 31 and the electric vehicle, improves the installation stability, and avoids the deformation of the battery pack 31 due to the sinking of the middle area due to the excessive size. On the other hand, it limits the movement of the battery pack 31 relative to the electric vehicle, and improves the shock resistance of the battery pack 31 during the driving of the electric vehicle.

[0113] The two ends of the hooking portion 212 exposed from the connecting portion 211 are provided with shaft sleeves 214, and the hooking portion 212 contacts the hooking area 15 through the shaft sleeves 214. By providing the shaft sleeves 214 at the two ends of the hooking portion 212 exposed from the connecting portion 211, friction is reduced, the stability of the hooking portion 212 and the hooking seat 1 is ensured, and the service life is extended; at the same time, the two ends of the hooking portion 212 are evenly stressed, and the stability of the battery pack 31 is improved.

[0114] A retaining ring 213 is provided at both ends of the hanging portion 212. The retaining ring 213 is provided on the side of the sleeve 214 away from the connecting portion 211, and the retaining ring 213 is used to limit the sleeve 214 from being separated from the hanging portion 212. The retaining ring 213 has a blocking effect and is used to limit the sleeve 214 from being separated from the hanging portion 212, ensuring that the sleeve 214 will not be separated during use, thereby improving stability; at the same time, the structure is simple and the installation and setting are very convenient.

[0115] Grooves 215 are provided on both sides of the hanging part 212, and the grooves 215 are used to install the sleeve 214. The sleeve 214 is sleeved in the groove 215, and the inner wall surface of the groove 215 and the retaining ring 213 simultaneously restrict the sleeve 214, further ensuring that the sleeve 214 will not be separated during use, thereby improving stability; at the same time, the sleeve 214 is installed with higher precision through the groove 215, and the structure is simple, and the installation is very convenient.

[0116] The hanging member 21 further includes a fixing portion 216, which extends from the upper end of the connecting portion 211 and penetrates the hanging portion 212, and is used to connect the connecting portion 211 and the hanging portion 212. With the above-mentioned structural form, the fixing portion 216 extends from the upper end of the connecting portion 211 and penetrates the hanging portion 212 to fix the connecting portion 211 and the hanging portion 212, so that the connection between the hanging portion 212 and the connecting portion 211 is very convenient and has high stability.

[0117] In specific use, the fixing portion 216 may be a bolt. In other embodiments, the fixing portion 216 may also be other components that can connect the connecting portion 211 and the hanging portion 212, which is not limited here.

[0118] The upper end of the hanging member 21 is provided with a guide inclined surface 217. With the above structure, the hanging member 21 can be ensured to move in a predetermined direction without deviation or dislocation during the movement through the guide inclined surface 217, thereby improving the accuracy and stability of the connection.

[0119] The battery pack 31 includes a battery pack body 311 and a battery rack 312. The battery rack 312 is arranged circumferentially along the outer surface of the battery pack body 311. The battery pack body 311 and the battery rack 312 may be provided with a hanging member 21 to achieve the hanging of the middle area and the peripheral area of ​​the battery pack body 311 with the electric vehicle, thereby improving the stability of the battery pack 31 hanging on the chassis. That is, the hanging member 21 located on the battery pack body 311 and the mounting shell 24 located on the battery rack 312 can both be connected to the battery pack 3, thereby improving the stability of the battery pack 3 hanging on the chassis.

[0120] Regarding the method of setting the hanging member 21 on the battery pack body 311, the hanging part is located at the top of the battery pack body 311, the battery pack body 311 has a reinforcing beam 3111, the mounting shell 24 penetrates the reinforcing beam 3111 and is connected to the upper surface of the reinforcing beam 3111 through the fixing base 25 located on the side wall of the mounting shell 24, the bottom of the hanging member 21 is connected to the mounting shell 24, the hanging member 21 penetrates the reinforcing beam 3111 and the battery pack body 311, and protrudes from the upper surface of the battery pack body 311. With the above-mentioned structural form, the connection between the hanging member 21 and the battery pack body 311 is achieved by connecting the fixing base 25 with the reinforcing beam 3111 in the battery pack body 311. The part of the hanging member 21 protruding from the upper surface of the battery pack body 311 can be hung with the hanging seat 1, thereby realizing the hanging of the battery pack body 311 on the chassis of the electric vehicle 1000. This arrangement is particularly suitable for the hanging and locking of battery packs with larger sizes, and improves the hanging effect of the middle area of ​​the battery pack.

[0121] The hanging assembly 2 further includes a seal 30, which is connected to one end of the mounting shell 24 away from the reinforcing beam 3111 and is used to seal the battery pack body 311 and the mounting shell 24. One end of the seal 30 extends into the mounting shell 24 and fits against the inner wall of the mounting shell 24, and the other end of the seal 30 is connected to the upper surface of the battery pack body 311. With the above-mentioned structural form, the seal 30 seals the gap between the hanging component 21 and the mounting shell 24, thereby preventing foreign objects from entering the battery pack 31 from the mounting shell 24 and affecting the service life of the battery pack 31.

[0122] In specific use, the material of the sealing member 30 can be a rubber material. At the same time, the sealing member 30 is made of rubber material, which can also reduce the wear and tear caused by the friction between the hanging member 21 and the sealing member 30 during the rotation of the hanging member 21.

[0123] See also Fig.15 It is understood that in the manner in which the hanging member is arranged on the battery rack 312, the mounting shell 24 penetrates the battery rack 312 and is connected to the lower surface of the battery rack 312 through the fixed base 25 located at the bottom of the mounting shell 24, and the hanging member 21 penetrates the battery rack 312 and protrudes from the upper surface of the battery rack 312. When the hanging member 21 is hung in the hanging seat, under the hanging force, when the mounting shell 24 and the fixed base 25 are subjected to an upward pulling force, the battery rack 312 applies a downward pressure to the fixed base 25, which can offset the upward pulling force on the fixed base 25, thereby preventing the fixed base 25 from being greatly deformed and affecting the service life. In addition, in the above structure, the bolts can only be used to fix the fixed base 25 and the mounting shell 24, and are not subjected to pulling force, thereby preventing the bolts from being damaged and loosened, thereby improving the reliability of the connection between the battery pack 31 and the chassis of the electric vehicle 1000.

[0124] In this embodiment, the electric vehicle 1000 also includes the above-mentioned battery replacement battery pack 3.

[0125] Example 3

[0126] like Figures 19 to 23 As shown, this embodiment discloses a hooking device 100, and the hooking device 100 includes the hooking seat 1 in embodiment 1 and the hooking assembly 2 in embodiment 2. With the above structure, the hooking member 21 is hooked to the hooking seat 1 by rotating, and the above method does not require a large gap between the hooking member 21 and the hooking seat 1, so that the hooking member 21 can be stably hooked on the hooking seat 1, thereby improving the stability of the hooking member 21 hooked to the hooking seat 1.

[0127] By adopting the technical solution in the above embodiment, the height space under the chassis of the car is fully utilized. When the battery swapping equipment disassembles the battery swapping battery pack, the unloaded battery swapping equipment can directly enter the space below the battery swapping battery pack without interfering with the bottom of the electric car; when the battery swapping equipment installs the battery swapping battery pack, the battery swapping equipment carrying the battery swapping battery pack can also directly enter the bottom of the chassis of the car for battery swapping without interfering with the bottom of the electric car. During the whole process, there is no need to lift the car body, set up a sunken space or dig a pit for the battery swapping equipment to enter and exit, which reduces the cost, time and difficulty of building a battery swapping station, reduces the requirements for the site of the station, and improves the efficiency of battery swapping.

[0128] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A hook assembly, characterized in that: The hanging assembly includes a hanging piece and a mounting shell, the hanging piece is used to achieve mutual locking with the mounting seat, the mounting seat is connected to the electric vehicle, and is used to cooperate with the hanging piece on the battery pack to install the battery pack on the electric vehicle; the hanging piece is engaged with the mounting shell, and the hanging piece enters the mounting seat under the action of external force and is hung on the mounting seat after rotating an angle; The hanging assembly comprises a first engaging member and a second engaging member, wherein the first engaging member is fixed in the mounting shell, the second engaging member is connected to the hanging member, and the second engaging member is located in the mounting shell and can move in the mounting shell to switch between a first state and a second state; In the first state, the first engagement member and the second engagement member are engaged; In the second state, the second engagement member is disengaged from the first engagement member, and the second engagement member drives the hanging member to rotate.

2. The hitch assembly according to claim 1, characterized in that: The second engaging member comprises a matching portion, an elastic portion and an engaging portion arranged in sequence from top to bottom, two ends of the elastic portion abut against the matching portion and the engaging portion respectively, and the lower end of the hanging member is connected to the matching portion; In the first state, the engagement portion is engaged with the first engagement member, and the matching portion is disengaged from the engagement portion; In the second state, the meshing portion is disengaged from the first meshing member, and the matching portion cooperates with the meshing portion, so that the meshing portion drives the matching portion and the hanging member to rotate; And / or, a rotation guide groove is provided in the mounting shell, and the hanging member moves along the rotation guide groove; preferably, the hanging assembly also includes a guide member, the guide member is arranged in the mounting shell, and the rotation guide groove is located in the guide member.

3. The hitch assembly according to claim 1, characterized in that: The hanging member includes a connecting portion and a hanging portion, one end of the connecting portion is engaged with the battery pack, the connecting portion is provided with a connecting hole, the hanging portion passes through the connecting hole and is connected to the connecting portion.

4. The hitch assembly according to claim 3, characterized in that: The hanging seat comprises: a hanging seat body, a receiving cavity is arranged in the hanging seat body, the receiving cavity is used to receive at least part of the hanging member, the bottom of the receiving cavity has a hanging area, the hanging member is located in the hanging area, the number of the hanging areas is two, the two hanging areas are located on both sides of the bottom of the receiving cavity, the two ends of the hanging member have two hanging parts, the hanging parts and the hanging areas are hung one by one; and / or the hanging member further comprises a fixing part, the fixing part extends from the upper end of the connecting part and passes through the hanging part, the fixing part is used to connect the connecting part and the hanging part; Preferably, both ends of the hanging portion exposed from the connecting portion are provided with sleeves, and the hanging portion is in contact with the hanging area through the sleeves; more preferably, both ends of the hanging portion are provided with retaining rings, and the retaining rings are arranged on the side of the sleeve away from the connecting portion, and the retaining rings are used to limit the sleeve from detaching from the hanging portion; and / or, grooves are provided on both sides of the hanging portion, and the grooves are used to install the sleeves.

5. The hitch assembly according to any one of claims 1 to 4, characterized in that: The upper end of the hanging member is provided with a guiding inclined surface.

6. The hitch assembly according to claim 1, characterized in that: The mounting seat comprises: A hook seat body, wherein a receiving cavity is provided in the hook seat body, and the receiving cavity is used to receive at least part of the hook member, and the bottom of the receiving cavity has a transition area and a hook region, and the transition area and the hook region have a smooth transition, and the height of the transition area in the vertical direction is lower than the height of the hook region; the transition area is used for the hook member to rotate from the transition area to the hook region, and when the hook seat is locked with the hook member, the hook member is located in the hook region; Preferably, an opening is provided at the bottom of the main body of the mounting seat, and the opening is used for the mounting member to enter the accommodating cavity; more preferably, the number of the transition area and the mounting area are both multiple, and the multiple transition areas and the multiple mounting areas are symmetrically arranged on both sides of the opening; and / or, the mounting seat has a mounting plate, and the transition area and the mounting area are both arranged on the mounting plate, and when the mounting member reaches the mounting area, the mounting member is supported on the mounting plate; preferably, the mounting area on the mounting plate is provided with a cushioning structure; And / or, the top of the hanging seat body has a matching hole, and the matching hole is used for the hanging member to avoid the hanging member when the hanging member moves in the accommodating cavity; And / or, the mounting seat further comprises a mounting portion, the mounting portion is arranged on at least two sides of the top of the mounting seat body, and the mounting portion has a plurality of mounting holes for mounting the mounting seat on the electric vehicle.

7. A hooking device, characterized in that: The hooking device comprises a hooking assembly as described in any one of claims 1-6.

8. A battery pack for battery replacement, characterized in that: The battery-replacement battery pack includes a battery pack and a hanging assembly as described in any one of claims 1 to 6, and the hanging assembly and the hanging seat can be locked with each other.

9. The battery replacement pack according to claim 8, characterized in that: The battery pack includes a battery pack body and a battery rack, the battery rack is arranged circumferentially along the outer surface of the battery pack body, and the mounting shell is connected to the battery pack body and the battery rack respectively; Preferably, the battery pack body has a reinforcing beam, the mounting shell passes through the reinforcing beam and is connected to the upper surface of the reinforcing beam through a fixing base located on the side wall of the mounting shell, the bottom of the hanging member is connected to the mounting shell, the hanging member passes through the reinforcing beam and the battery pack body, and protrudes from the upper surface of the battery pack body; more preferably, the hanging assembly further comprises a sealing member, the sealing member is connected to one end of the mounting shell away from the reinforcing beam, and is used to seal the battery pack body and the mounting shell, one end of the sealing member extends into the mounting shell and fits with the inner wall of the mounting shell, and the other end of the sealing member is connected to the upper surface of the battery pack body; And / or, the mounting shell passes through the battery rack and is connected to the lower surface of the battery rack via a fixing base located at the bottom of the mounting shell, and the hanging member passes through the battery rack and protrudes from the upper surface of the battery rack.

10. An electric vehicle, characterized in that: The electric vehicle includes a battery replacement pack as described in claim 8 or 9.

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