Split type quick-change support, quick-change assembly and electric automobile

Abstract

The utility model provides a split type quick-change support, quick-change assembly and electric automobile, the split type quick-change support comprises two longitudinal beams and at least one cross beam which are oppositely arranged, the two longitudinal beams are mutually independent, and the longitudinal beams and the cross beam are mutually independent. Each longitudinal beam and each transverse beam are respectively provided with a battery pack mounting surface facing the battery pack and a chassis mounting surface facing the chassis, and the longitudinal beams and the transverse beams are respectively connected to the battery pack and the chassis through respective battery pack mounting surfaces and chassis mounting surfaces. According to the utility model, the longitudinal beams and the cross beams of the quick-change bracket are arranged to be mutually independent, so that on one hand, the quick-change bracket can be prevented from interfering with other parts of the electric automobile, and an avoiding structure does not need to be arranged on the quick-change bracket to avoid interference, thereby being beneficial to simplifying the manufacturing process; and on the other hand, the weight and the occupied space of the quick-change bracket can be reduced, so that the overall weight of the electric automobile is lighter, the size is smaller, or the electric automobile can accommodate more parts in a limited space.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicle battery replacement, and in particular to a split quick-change bracket, a quick-change assembly, and an electric vehicle. Background Art

[0002] At present, new energy vehicles, especially electric vehicles, are in a rapid development stage. Electric vehicles mainly include direct charging and quick-change types. Among them, quick-change electric vehicles have better development prospects due to their shorter battery replacement time and convenient use.

[0003] For quick-change electric vehicles, the battery pack is installed on a quick-change bracket, and the quick-change bracket is connected to the chassis of the electric vehicle to install the battery pack on the electric vehicle. The common quick-change brackets on the market are usually of an integral structure, that is, the crossbeam and the longitudinal beam in the quick-change bracket are connected end to end in sequence to form an integral quick-change bracket. However, the overall weight of the integral quick-change bracket is relatively large, and in order to achieve the connection between the crossbeam and the longitudinal beam, the size and setting position of the quick-change bracket must also consider avoiding other structures in the chassis area of ​​the electric vehicle, or a special avoidance structure is designed on the quick-change bracket to prevent the quick-change bracket from interfering with other structures in the chassis area of ​​the electric vehicle, which makes manufacturing more troublesome. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art that the integral quick-change bracket is heavy and difficult to manufacture, and to provide a split quick-change bracket, a quick-change assembly, and an electric vehicle.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A split quick-change bracket is used to fix a battery pack on the chassis of an electric vehicle. The split quick-change bracket includes two longitudinal beams and at least one cross beam that are arranged opposite to each other. The two longitudinal beams and the longitudinal beams and the cross beams are independent of each other. Each of the longitudinal beams and the cross beam has a battery pack mounting surface facing the battery pack and a chassis mounting surface facing the chassis. The longitudinal beams and the cross beams are respectively connected to the battery pack and the chassis through their respective battery pack mounting surfaces and the chassis mounting surfaces.

[0007] In this solution, by setting the longitudinal beam and transverse beam of the quick-change bracket to be independent of each other, on the one hand, it is possible to avoid interference between the quick-change bracket and other components of the electric vehicle, and there is no need to set an avoidance structure on the quick-change bracket to avoid interference, which is conducive to simplifying the manufacturing process; on the other hand, the weight and floor space of the quick-change bracket can be reduced, making the overall weight of the electric vehicle lighter and smaller, or allowing the electric vehicle to accommodate more components in a limited space; in addition, the split quick-change bracket is also more convenient to install.

[0008] Preferably, the split quick-change bracket includes a first locking structure and a second locking structure, the first locking structure is arranged on the battery pack mounting surface of the cross beam, and the second locking structure is arranged on the battery pack mounting surface of the longitudinal beam, and the locking paths of the first locking structure and the second locking structure are the same.

[0009] In the present solution, a first locking structure and a second locking structure are respectively provided on the cross beam and the longitudinal beam, so that when the battery pack is installed on the quick-change bracket, there are locking connection points on at least three sides of the battery pack. This not only increases the number of locking connection points, but also makes the positions of the locking connection points evenly dispersed, which is beneficial to improving the connection stability between the battery pack and the quick-change bracket, and is also beneficial to extending the service life of the first locking structure and the second locking structure.

[0010] Preferably, the first locking structure is provided with a first groove, the opening of the first groove faces away from the cross beam, the shape of the first groove is adapted to the shape of the locking member of the battery pack, and the first groove is used for the locking member to move in the horizontal direction to be hung in the first groove.

[0011] In the present solution, the first locking structure is configured to have a first groove, and the shape of the first groove is adapted to the shape of the locking piece of the battery pack, so that when the battery pack moves in the horizontal direction, the locking piece on the battery pack can be inserted into the first groove, and the upper and lower groove walls of the first groove limit the vertical movement of the locking piece. Since the locking path of the second locking structure is to first move the battery pack upward and then move the battery pack horizontally, the first locking structure is configured in the aforementioned form, which can ensure that the first locking structure and the second locking structure are locked at the same time.

[0012] Preferably, the first groove includes a laterally extending hanging groove and a vertically extending avoidance groove, the avoidance groove passes through the bottom surface of the first locking structure and is connected with the hanging groove, the lateral dimension of the hanging groove is larger than the lateral dimension of the avoidance groove, the groove wall of the hanging groove is for the locking member to be hung, and the avoidance groove is used to avoid part of the structure of the locking member.

[0013] In this solution, the first groove is configured to include a laterally extending hooking groove and a vertically extending avoidance groove, so that the first groove can be suitable for a T-shaped or L-shaped locking member. The avoidance groove is passed through the bottom surface of the first locking structure for the vertical portion of the locking member to pass through, which reduces the required size of the first locking structure while ensuring the ability to lock, and further reduces the weight and space occupied by the quick-change bracket; if the avoidance groove does not pass through the bottom surface of the first locking structure, the length of the avoidance groove needs to be set to be consistent with the length of the T-shaped or L-shaped locking member, which will also result in a larger size of the first locking structure.

[0014] Preferably, the split quick-change bracket includes at least two of the first locking structures, and the at least two of the first locking structures are symmetrically arranged with the longitudinal midline of the beam as the axis of symmetry.

[0015] In this solution, the first locking structure is symmetrically arranged, which is conducive to ensuring the force balance on the left and right sides, thereby ensuring the stability of the connection of the battery pack.

[0016] Preferably, the second locking structure includes a lock base, the lock base is provided with an opening and a cavity extending from the opening, the cavity includes a first cavity section extending vertically from the opening and a second cavity section extending from the first cavity section along the extension direction of the longitudinal beam, and the opening is used for allowing a locking member installed on the battery pack to enter the first cavity section and be hung on the second cavity section.

[0017] In this solution, when the battery pack moves upward, the locking piece on the battery pack first enters the vertically extending first cavity section from the opening, and then the battery pack is moved horizontally, and the locking piece on the battery pack moves from the first cavity section to the horizontally extending second cavity section, thereby realizing the hooking of the locking piece and the second locking structure.

[0018] Preferably, the split quick-change bracket further includes a third locking structure, the third locking structure is independent of the cross beam and the longitudinal beam, the third locking structure has a chassis mounting surface facing the chassis and a battery pack mounting surface facing the battery pack, and the third locking structure, the first locking structure and the second locking structure have the same locking path;

[0019] The position of the third locking structure corresponds to the position of a side edge of the battery pack extending laterally, and / or the position of the third locking structure is within the range of an orthographic projection of a top surface of the battery pack.

[0020] In the present solution, by providing a third locking structure at a corresponding position on the laterally extending side edges of the battery pack and / or the top surface of the battery pack, that is, a locking member connected to the third locking structure is correspondingly provided on the laterally extending side edges of the battery pack and / or the top surface of the battery pack, the number of locking connection points between the battery pack and the quick-change bracket is further increased, which is beneficial to further ensure the connection stability between the battery pack and the quick-change bracket.

[0021] Preferably, the battery pack mounting surface of the third locking structure is provided with a second groove, the opening of the second groove faces away from the cross beam, the shape of the second groove is adapted to the shape of the locking member of the battery pack, and the second groove is used for the locking member to move in the horizontal direction to be hung in the second groove.

[0022] In this solution, the shape of the second groove is adapted to the shape of the locking piece of the battery pack, so that when the battery pack moves in the horizontal direction, the locking piece on the battery pack can be inserted into the second groove, and the upper and lower groove walls of the second groove limit the vertical movement of the locking piece. At the same time, the opening of the second groove is in the same direction as the opening of the first groove. When the battery pack moves horizontally, the locking piece can enter the first groove and the second groove respectively at the same time.

[0023] A quick-change assembly comprises a battery pack and the split quick-change bracket as described above, wherein a plurality of locking members are provided on the outer peripheral surface of the battery pack, and the battery pack is locked to the split quick-change bracket through the locking members.

[0024] In this solution, the split quick-change bracket is helpful to reduce the weight and space occupied by the quick-change assembly, making the overall weight of the electric vehicle lighter and smaller, or allowing the electric vehicle to accommodate more components in a limited space; in addition, since the quick-change bracket is split, the quick-change assembly is more convenient to manufacture and install.

[0025] Preferably, the locking member includes a first locking member and a second locking member, the first locking member is arranged on the side of the battery pack extending laterally, and the second locking member is arranged on the side of the battery pack extending longitudinally, and the battery pack is locked with the crossbeam and / or the third locking structure through the first locking member, and is locked with the longitudinal beam through the second locking member.

[0026] In the present embodiment, a first locking member and a second locking member are respectively provided on the laterally extending side and the longitudinally extending side of the battery pack, so that when the battery pack is installed on the quick-change bracket, there are locking connection points on at least three sides of the battery pack. This not only increases the number of locking connection points, but also makes the positions of the locking connection points evenly dispersed, which is beneficial to improving the connection stability between the battery pack and the quick-change bracket, and is also beneficial to extending the service life of the first locking member and the second locking member.

[0027] Preferably, the quick-change assembly further comprises a mounting seat, wherein the mounting seat extends from a side edge extending laterally from the battery pack in a direction away from the battery pack, and the first locking member is mounted on the side edge extending laterally from the battery pack through the mounting seat.

[0028] In this solution, the first locking member is installed using a mounting seat so that there is a certain distance between the first locking member and the side of the battery pack, thereby avoiding interference or collision between the quick-change bracket and the battery pack during installation.

[0029] Preferably, the mounting base includes a first mounting portion, a second mounting portion and a reinforcement plate, the first mounting portion is mounted on a laterally extending side of the battery pack, the second mounting portion extends from the first mounting portion in a direction away from the battery pack, the second mounting portion is provided with a mounting hole for mounting the first locking member, and the reinforcement plate is arranged at the connection between the first mounting portion and the second mounting portion and extends in a direction perpendicular to the second mounting portion.

[0030] In this solution, the first mounting portion can increase the structural strength of the connection between the battery pack and the quick-change bracket, the second mounting portion extends the first locking member outward by a certain distance, and the reinforcing plate can prevent the connection between the first mounting portion and the second mounting portion from breaking.

[0031] Preferably, the first locking member includes a first lock body extending vertically and at least one second lock body extending laterally outward from the end of the first lock body. When the battery pack moves in a horizontal direction, the second lock body is hung in the hanging groove of the first locking structure, and the first lock body is inserted into the avoidance groove of the first locking structure.

[0032] In this solution, when the transversely extending second lock body enters the hanging groove of the first locking structure, the first locking member can be hung in the hanging groove, and the battery pack can be hung on the quick-change bracket.

[0033] An electric vehicle comprises the quick-change assembly as described above.

[0034] In this solution, a split quick-change bracket is used to fix the battery pack to achieve fixation of the battery pack on the electric vehicle.

[0035] The positive progressive effect of the utility model is that: the utility model sets the longitudinal beam and the transverse beam of the quick-change bracket to be independent of each other, on the one hand, it can avoid the interference between the quick-change bracket and other components of the electric vehicle, and there is no need to set an avoidance structure on the quick-change bracket to avoid interference, which is conducive to simplifying the manufacturing process; on the other hand, it can reduce the weight and space occupied by the quick-change bracket, so that the overall weight of the electric vehicle is lighter and the size is smaller, or the electric vehicle can accommodate more parts in a limited space; in addition, the split quick-change bracket is also more convenient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional structural schematic diagram of a quick-change assembly according to an embodiment of the utility model.

[0037] Figure 2 Another three-dimensional structural schematic diagram of a quick-change assembly according to an embodiment of the utility model.

[0038] Figure 3The figure is a three-dimensional structural schematic diagram of a quick-change bracket according to an embodiment of the utility model.

[0039] Figure 4 Another three-dimensional structural schematic diagram of a quick-change bracket according to an embodiment of the utility model.

[0040] Figure 5 It is a schematic diagram of the three-dimensional structure of a battery pack according to an embodiment of the utility model.

[0041] Figure 6 Another three-dimensional structural schematic diagram of a battery pack according to an embodiment of the present invention.

[0042] Figure 7 It is a schematic diagram of the three-dimensional structure of a crossbeam according to an embodiment of the utility model.

[0043] Figure 8 for Figure 7 Enlarged view of part A.

[0044] Fig. 9 It is a schematic diagram of the three-dimensional structure of the first locking member according to an embodiment of the utility model.

[0045] Fig.10 This is a schematic structural diagram of the cooperation between the first locking member and the first locking structure according to an embodiment of the utility model.

[0046] Fig.11 It is a three-dimensional structural schematic diagram of a longitudinal beam according to an embodiment of the utility model.

[0047] Fig.12 It is a side structural schematic diagram of a lock base according to an embodiment of the utility model.

[0048] Fig.13 This is a schematic structural diagram of the cooperation between the third locking member and the third locking structure in one embodiment of the utility model.

[0049] Fig.14 It is a schematic diagram of the three-dimensional structure of the third locking structure of an embodiment of the utility model.

[0050] Description of reference numerals:

[0051] Quick change bracket 1

[0052] Stringer 11

[0053] Beam 12

[0054] Battery Pack 2

[0055] The first locking structure 31

[0056] First groove 311

[0057] Mounting slot 3111

[0058] Avoidance slot 3112

[0059] The second locking structure 32

[0060] Lock base 321

[0061] Opening 3211

[0062] First cavity section 3212

[0063] Second cavity section 3213

[0064] The third locking structure 33

[0065] The second groove 331

[0066] The first locking member 41

[0067] First lock body 411

[0068] Second lock body 412

[0069] The second locking member 42

[0070] The third locking member 43

[0071] Mounting Seat 5

[0072] First mounting portion 51

[0073] Second mounting portion 52

[0074] Reinforcement plate 53

[0075] Battery pack mounting surface 61

[0076] Chassis mounting surface 62 DETAILED DESCRIPTION

[0077] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0078] This embodiment discloses an electric vehicle, such as Figure 1 and Figure 2 As shown, the electric vehicle includes a quick-change assembly, which includes a quick-change bracket 1 and a battery pack 2. The quick-change bracket 1 is fixed to the chassis of the electric vehicle (not shown in the figure), and the battery pack 2 is fixed to the quick-change bracket 1, so that the battery pack 2 is fixed to the chassis of the electric vehicle through the quick-change bracket 1. Among them, the battery pack 2 in this embodiment is detachably connected to the quick-change bracket 1, thereby realizing the detachable connection between the battery pack 2 and the electric vehicle, thereby being able to provide sufficient power for the electric vehicle by replacing the battery pack 2.

[0079] like Figure 3 and Figure 4As shown, the quick-change bracket 1 in this embodiment is a split quick-change bracket 1, which specifically includes two oppositely arranged longitudinal beams 11 and a transverse beam 12. The two longitudinal beams 11 are arranged on both sides of the width direction of the battery pack 2 and are along the length direction of the battery pack ( Figure 1 The crossbeam 12 is arranged on one side of the length direction of the battery pack 2 and extends in the width direction of the battery pack ( Figure 1 The two longitudinal beams 11 and the longitudinal beam 11 and the cross beam 12 are independent of each other, that is, there is no direct connection between the three.

[0080] The crossbeam 12 in this embodiment is installed near the front of the electric vehicle (not shown in the figure). In other alternative embodiments, the crossbeam 12 can also be installed near the rear of the electric vehicle. Alternatively, the split quick-change bracket 1 can be designed with two oppositely arranged crossbeams 12, and the two crossbeams 12 are respectively arranged on both sides of the length direction of the battery pack 2, one of the crossbeams 12 is installed near the front of the electric vehicle, and the other crossbeam 12 is installed near the rear of the electric vehicle.

[0081] like Figure 3 and Figure 4 As shown, each longitudinal beam 11 and cross beam 12 has a battery pack mounting surface 61 facing the battery pack 2 and a chassis mounting surface 62 facing the chassis. The longitudinal beam 11 and cross beam 12 are respectively connected to the battery pack 2 through their respective battery pack mounting surfaces 61, and are connected to the chassis through their respective chassis mounting surfaces 62, so that each longitudinal beam 11 and cross beam 12 can be independently fixed on the electric vehicle and can be independently connected to the battery pack 2.

[0082] Specifically, Figure 3 As shown, in this embodiment, the split quick-change bracket 1 is installed at the lower position of the chassis of the electric vehicle, and the upper end surfaces of the cross beam 12 and the two longitudinal beams 11 form a chassis mounting surface 62. The upper end surfaces of the cross beam 12 and the two longitudinal beams 11 are installed on the corresponding structure of the chassis area of ​​the electric vehicle (such as the vehicle beam), thereby realizing the connection between the cross beam 12 and the longitudinal beam 11 and the electric vehicle. Among them, the cross beam 12 and the longitudinal beam 11 can be connected to the chassis of the electric vehicle by bolt fixing or the like.

[0083] Furthermore, if Figure 1-Figure 3As shown, the battery pack 2 is placed in the empty area surrounded by the split quick-change bracket 1. Since the two longitudinal beams 11 are respectively arranged on both sides of the battery pack 2 in the battery pack width direction, the cross beam 12 is placed on one side of the battery pack 2 in the battery pack length direction. Therefore, one end surface of the cross beam 12 facing the longitudinal beam 11 in the battery pack length direction forms the battery pack mounting surface 61 of the cross beam 12, and one surface of the two longitudinal beams 11 facing each other in the battery pack width direction forms the battery pack mounting surface 61 of the longitudinal beam 11. The cross beam 12 and the longitudinal beam 11 are connected to the battery pack 2 through the corresponding battery pack mounting surfaces.

[0084] In this embodiment, the longitudinal beam 11 and the cross beam 12 of the quick-change bracket 1 are set to be independent of each other. On the one hand, the quick-change bracket 1 can be prevented from interfering with other parts of the electric vehicle, and there is no need to set an avoidance structure on the quick-change bracket 1 to avoid interference, which is conducive to simplifying the manufacturing process. On the other hand, the weight and space occupied by the quick-change bracket 1 can be reduced, making the overall weight of the electric vehicle lighter and smaller, or allowing the electric vehicle to accommodate more parts in a limited space. In addition, the split quick-change bracket 1 is also more convenient to install.

[0085] In addition, when a component of the split quick-change bracket 1, such as a longitudinal beam 11, is damaged or needs maintenance or replacement due to other reasons, the split design only requires replacement of the corresponding structure without affecting other components, and has strong flexibility.

[0086] In this embodiment, if Figure 4-Figure 6 As shown, a plurality of locking structures are provided on the battery pack mounting surface 61 of the split quick-change bracket 1, and a plurality of locking parts are provided on the outer peripheral surface of the battery pack 2. The split quick-change bracket 1 and the battery pack 2 are locked on the split quick-change bracket 1 through a locking connection between the locking structure and the locking parts, so as to facilitate the subsequent rapid replacement of the battery pack 2.

[0087] Specifically, Figure 7-Figure 12 As shown, the split quick-change bracket 1 includes a first locking structure 31 and a second locking structure 32. The first locking structure 31 is arranged on the battery pack mounting surface 61 of the cross beam 12, and the second locking structure 32 is arranged on the battery pack mounting surface 61 of the longitudinal beam 11. The locking member includes a first locking member 41 and a second locking member 42. The first locking member 41 is arranged on the side of the battery pack 2 extending laterally (i.e., the first locking member 41 is installed on the side of the battery pack 2 facing the cross beam 12), and the second locking member 42 is arranged on the side of the battery pack 2 extending longitudinally (i.e., the second locking member 42 is installed on the side of the battery pack 2 facing the longitudinal beam 11). In this embodiment, the battery pack 2 is locked on the cross beam 12 by the cooperation of the first locking structure 31 and the first locking member 41, and the battery pack 2 is locked on the longitudinal beam 11 by the cooperation of the second locking structure 32 and the second locking member 42.

[0088] In this embodiment, a first locking structure 31 and a second locking structure 32 are respectively provided on the cross beam 12 and the longitudinal beam 11, and a first locking member 41 and a second locking member 42 are respectively provided on the transversely extending side and the longitudinally extending side of the battery pack 2, so that when the battery pack 2 is installed on the quick-change bracket 1, there are locking connection points on at least three sides of the battery pack 2. This not only increases the number of locking connection points, but also makes the positions of the locking connection points evenly dispersed, which is beneficial to improving the connection stability between the battery pack 2 and the quick-change bracket 1, and is also beneficial to prolonging the service life of the first locking member 41 and the second locking member 42.

[0089] Among them, since the first locking structure 31 and the second locking structure 32 are used to lock the same battery pack 2, the locking paths of the first locking structure 31 and the second locking structure 32 are the same, thereby ensuring that the first locking structure 31 and the first locking member 41, and the second locking structure 32 and the second locking member 42 can successfully complete locking and unlocking, thereby ensuring the reliability of battery replacement in electric vehicles.

[0090] like Figure 7 and Figure 8 As shown, the first locking structure 31 is provided with a first groove 311, and the opening of the first groove 311 faces away from the cross beam 12, that is, the first groove 311 has an opening at one end away from the cross beam 12 in the length direction of the battery pack, so as to facilitate the first locking member 41 to enter the first groove 311 through the opening of the first groove 311. The shape of the first groove 311 is adapted to the shape of the first locking member 41 of the battery pack 2, and the first groove 311 is used for the locking member to move in the horizontal direction to be hung in the first groove 311.

[0091] In this embodiment, the first locking structure 31 is configured to have a first groove 311, and the shape of the first groove 311 is adapted to the shape of the locking member of the battery pack 2, so that when the battery pack 2 moves in the horizontal direction, the first locking member 41 on the battery pack 2 can be inserted into the first groove 311, and the upper and lower groove walls of the first groove 311 limit the vertical movement of the locking member. And because the locking path of the second locking structure 32 is to first move the battery pack 2 upward and then move the battery pack 2 horizontally, the first locking structure 31 is configured in the aforementioned form, which can ensure that the first locking structure 31 and the second locking structure 32 are locked at the same time.

[0092] Specifically, Figure 7 and Figure 8As shown, the first groove 311 has an opening at one end away from the crossbeam 12 in the length direction of the battery pack, so that the first locking member 41 can enter the first groove 311 through the opening of the first groove 311. The first groove 311 includes a hanging groove 3111 extending laterally (i.e., in the length direction of the battery pack) and an avoidance groove 3112 extending vertically (i.e., in the vertical direction). The hanging groove 3111 is located above the avoidance groove 3112, and the upper end of the avoidance groove 3112 is connected to the hanging groove 3111, and the lower end of the avoidance groove 3112 passes through the bottom surface of the first locking structure 31. In this embodiment, the first groove 311 is T-shaped, and the lateral dimension of the hanging groove 3111 is larger than the lateral dimension of the avoidance groove 3112, so that the lower groove wall of the hanging groove 3111 is provided for the locking member to hang, and the avoidance groove 3112 is used to avoid part of the structure of the first locking member 41.

[0093] In this embodiment, the first groove 311 is configured to include a laterally extending hanging groove 3111 and a vertically extending avoidance groove 3112, so that the first groove 311 can be suitable for a T-shaped or L-shaped locking member. The avoidance groove 3112 is passed through the bottom surface of the first locking structure 31 for the vertical portion of the locking member to pass through, which reduces the required size of the first locking structure 31 while ensuring the ability to lock, thereby further reducing the weight and floor space of the quick-change bracket 1. If the avoidance groove 3112 does not pass through the bottom surface of the first locking structure 31, the length of the avoidance groove 3112 needs to be set to be consistent with the length of the T-shaped or L-shaped locking member, which will also cause the size of the first locking structure 31 to be larger.

[0094] like Fig. 9 As shown, the shape of the first locking member 41 is the same as that of the first groove 311, both of which are T-shaped. The first locking member 41 includes a first lock body 411 extending vertically and extending laterally from the end of the first lock body 411 to the outside on both sides, thereby forming a second lock body 412 respectively. When the battery pack 2 moves in the horizontal direction, the second lock body 412 is hung in the hanging groove 3111 of the first locking structure 31, and the first lock body 411 is inserted into the avoidance groove 3112 of the first locking structure 31. When the laterally extending second lock body 412 enters the hanging groove 3111 of the first locking structure 31, the first locking member 41 can be hung in the hanging groove 3111 under the influence of the gravity of the battery pack 2, and the battery pack 2 is hung on the quick-change bracket 1.

[0095] In other alternative embodiments, the shape of the first locking member 41 can also be designed to be L-shaped, that is, the first locking member 41 includes a first lock body 411 extending vertically and a second lock body 412 extending laterally to one side from the end of the first lock body 411.

[0096] Furthermore, if Fig. 9As shown, the quick-change assembly further includes a mounting seat 5, which extends from the side of the battery pack 2 extending laterally in a direction away from the battery pack 2, and the first locking member 41 is mounted on the side of the battery pack 2 extending laterally through the mounting seat 5. In this embodiment, the mounting seat 5 is used to mount the first locking member 41, so that there is a certain distance between the first locking member 41 and the side of the battery pack 2, thereby avoiding interference and collision between the quick-change bracket 1 and the battery pack 2 during installation.

[0097] Specifically, Fig. 9 As shown, the mounting seat 5 includes a first mounting portion 51, a second mounting portion 52 and a reinforcing plate 53. The first mounting portion 51 is mounted on the side of the battery pack 2 extending laterally. The second mounting portion 52 extends from the first mounting portion 51 in a direction away from the battery pack 2. The second mounting portion 52 is provided with a mounting hole for mounting the first locking member 41. The reinforcing plate 53 is provided at the connection between the first mounting portion 51 and the second mounting portion 52 and extends in a direction perpendicular to the second mounting portion 52. The first mounting portion 51 can increase the structural strength of the connection between the battery pack 2 and the quick-change bracket 1. The second mounting portion 52 extends the first locking member 41 outward by a certain distance. The reinforcing plate 53 can prevent the connection between the first mounting portion 51 and the second mounting portion 52 from being broken.

[0098] Furthermore, if Figure 5 As shown, the split quick-change bracket 1 in this embodiment includes two first locking structures 31, and the two first locking structures 31 are symmetrically arranged with the longitudinal midline of the crossbeam 12 as the symmetry axis. In this embodiment, the first locking structures 31 are symmetrically arranged, which is conducive to ensuring the force balance on the left and right sides, and thus ensuring the connection stability of the battery pack 2.

[0099] In other alternative embodiments, the number of first locking structures 31 on a single crossbeam 12 can be designed to be greater, preferably evenly arranged on the crossbeam 12 to ensure force balance. The design can be specifically based on factors such as the weight of the battery pack.

[0100] like Fig.11 and Fig.12 As shown, the split quick-change bracket 1 includes a second locking structure 32, and the second locking structure 32 includes a lock base 321. The lock base 321 is provided with an opening 3211 and a cavity extending from the opening 3211. The cavity includes a first cavity section 3212 extending vertically from the opening 3211 and a second cavity section 3213 extending from the first cavity section 3212 along the extension direction of the longitudinal beam 11. The opening 3211 is used for allowing the locking member installed on the battery pack 2 to enter the first cavity section 3212 and be hung on the second cavity section 3213.

[0101] When the battery pack 2 moves upward, the second locking member 42 on the battery pack 2 first enters the vertically extending first cavity section 3212 from the opening 3211, and then the battery pack 2 is moved horizontally, and the second locking member 42 on the battery pack 2 moves from the first cavity section 3212 to the horizontally extending second cavity section 3213, thereby realizing the hooking of the second locking member 42 and the second locking structure 32.

[0102] The second locking member 42 in this embodiment is a shaft locking structure. The detailed structure and locking method of the second locking structure 32 and the second locking member 42 belong to the prior art in this field and will not be described in detail.

[0103] Furthermore, if Figure 1-Figure 4 As shown, the split quick-change bracket 1 also includes a third locking structure 33, which is independent of the cross beam 12 and the longitudinal beam 11. The position of the third locking structure 33 corresponds to the position of the side edge of the battery pack 2 extending laterally, that is, the third locking structure 33 is located on the side of the battery pack 2 away from the cross beam 12 in the length direction of the battery pack.

[0104] like Fig.14 As shown, the third locking structure 33 has a chassis mounting surface 62 facing the chassis and a battery pack mounting surface 61 facing the battery pack 2. The upper end surface of the third locking structure 33 forms the chassis mounting surface 62 of the third locking structure 33, and the end surface of the third locking structure 33 away from the battery pack 2 in the length direction of the battery pack forms the battery pack mounting surface 61 of the third locking structure 33, that is, the orientation of the battery pack mounting surface 61 of the cross beam 12 is the same as that of the battery pack mounting surface 61 of the third locking structure 33.

[0105] In this embodiment, the third locking structure 33 can be connected to the chassis of the electric vehicle by bolt fixing or the like.

[0106] In other alternative embodiments, the position of the third locking structure 33 may also be within the range of the orthographic projection of the top surface of the battery pack 2 , that is, the third locking structure 33 is disposed on the top surface of the battery pack 2 .

[0107] like Figure 6 As shown, the battery pack 2 also includes a third locking member 43, which is arranged on an end surface of the battery pack 2 away from the cross beam 12 in the length direction of the battery pack. This embodiment further increases the number of locking connection points between the battery pack 2 and the quick-change bracket 1 through the cooperation between the third locking structure 33 and the third locking member 43, which is beneficial to further ensure the connection stability between the battery pack 2 and the quick-change bracket 1.

[0108] Furthermore, since the third locking structure 33 also locks the same battery pack 2 as the first locking structure 31 and the second locking structure 32, the locking paths of the first locking structure 31 and the second locking structure 32 are the same, thereby ensuring that the first locking structure 31 and the first locking member 41, the second locking structure 32 and the second locking member 42, and the third locking structure 33 and the third locking member 43 can all successfully complete locking and unlocking, thereby ensuring the reliability of battery replacement in electric vehicles.

[0109] Specifically, Fig.13 As shown, the battery pack mounting surface 61 of the third locking structure 33 is provided with a second groove 331, the opening of the second groove 331 faces away from the cross beam 12, the shape of the second groove 331 matches the shape of the third locking member 43 of the battery pack 2, and the second groove 331 is used for the locking member to move in the horizontal direction to be hung in the second groove 331. The shape of the second groove 331 matches the shape of the locking member of the battery pack 2, so that when the battery pack 2 moves in the horizontal direction, the locking member on the battery pack 2 can be inserted into the second groove 331, and the upper and lower groove walls of the second groove 331 limit the movement of the locking member in the vertical direction. At the same time, the opening of the second groove 331 is in the same direction as the opening of the first groove 311. When the battery pack 2 moves horizontally, the locking member can enter the first groove 311 and the second groove 331 respectively at the same time.

[0110] The third locking structure 33 has the same structure as the first locking structure 31, the third locking member 43 has the same structure as the first locking member 41, and the third locking member 43 is also fixed to the battery pack 2 through the mounting seat described above. Therefore, the shapes of the third locking structure 33 and the third locking member 43, as well as the specific coordination between the two, will not be described in detail here.

[0111] The difference between the third locking structure 33 and the first locking structure 31 is that: since the opening of the second groove 331 is also facing away from the cross beam 12, that is, the second groove 331 is arranged on the side of the third locking structure 33 away from the battery pack 2 in the length direction of the battery pack, during the locking process, the third locking member 43 enters the second groove 331 of the third locking structure 33 from the outside of the quick-change bracket.

[0112] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention, unless otherwise specified herein.

[0113] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A split quick-change bracket for fixing a battery pack on the chassis of an electric vehicle, characterized in that: The split quick-change bracket includes two longitudinal beams and at least one cross beam arranged opposite to each other. The two longitudinal beams and the longitudinal beam and the cross beam are independent of each other. Each of the longitudinal beam and the cross beam has a battery pack mounting surface facing the battery pack and a chassis mounting surface facing the chassis. The longitudinal beam and the cross beam are respectively connected to the battery pack and the chassis through their respective battery pack mounting surfaces and the chassis mounting surfaces.

2. The split quick-change bracket according to claim 1, characterized in that: The split quick-change bracket includes a first locking structure and a second locking structure. The first locking structure is arranged on the battery pack mounting surface of the cross beam, and the second locking structure is arranged on the battery pack mounting surface of the longitudinal beam. The locking paths of the first locking structure and the second locking structure are the same.

3. The split quick-change bracket according to claim 2, characterized in that: The first locking structure is provided with a first groove, the opening of the first groove faces away from the cross beam, the shape of the first groove is adapted to the shape of the locking member of the battery pack, and the first groove is used for the locking member to move in the horizontal direction to be hung in the first groove.

4. The split quick-change bracket according to claim 3, characterized in that: The first groove includes a laterally extending hanging groove and a vertically extending avoidance groove, the avoidance groove passes through the bottom surface of the first locking structure and is connected with the hanging groove, the lateral dimension of the hanging groove is larger than the lateral dimension of the avoidance groove, the groove wall of the hanging groove is for the locking member to be hung, and the avoidance groove is used to avoid part of the structure of the locking member.

5. The split quick-change bracket according to claim 2, characterized in that: The split quick-change bracket includes at least two of the first locking structures, and the at least two of the first locking structures are symmetrically arranged with the longitudinal midline of the beam as the symmetry axis.

6. The split quick-change bracket according to claim 2, characterized in that: The second locking structure includes a lock base, which is provided with an opening and a cavity extending from the opening, wherein the cavity includes a first cavity section extending vertically from the opening and a second cavity section extending from the first cavity section along the extension direction of the longitudinal beam, and the opening is used for allowing a locking member installed on the battery pack to enter the first cavity section and be hung on the second cavity section.

7. The split quick-change bracket according to claim 2, characterized in that: The split quick-change bracket further includes a third locking structure, the third locking structure is independent of the cross beam and the longitudinal beam, the third locking structure has a chassis mounting surface facing the chassis and a battery pack mounting surface facing the battery pack, and the third locking structure, the first locking structure and the second locking structure have the same locking path; The position of the third locking structure corresponds to the position of a side edge of the battery pack extending laterally, and / or the position of the third locking structure is within the range of an orthographic projection of a top surface of the battery pack.

8. The split quick-change bracket according to claim 7, characterized in that: The battery pack mounting surface of the third locking structure is provided with a second groove, the opening of the second groove faces away from the cross beam, the shape of the second groove is adapted to the shape of the locking member of the battery pack, and the second groove is used for the locking member to move in the horizontal direction to be hung in the second groove.

9. A quick-change assembly, characterized in that: The quick-change assembly includes a battery pack and a split quick-change bracket as described in any one of claims 1 to 8, wherein a plurality of locking members are provided on the outer peripheral surface of the battery pack, and the battery pack is locked to the split quick-change bracket through the locking members.

10. The quick-change assembly according to claim 9, characterized in that: The locking member includes a first locking member and a second locking member, the first locking member is arranged on the side of the battery pack extending laterally, and the second locking member is arranged on the side of the battery pack extending longitudinally, the battery pack is locked with the crossbeam and / or the third locking structure through the first locking member, and is locked with the longitudinal beam through the second locking member.

11. The quick-change assembly according to claim 10, characterized in that: The quick-change assembly also includes a mounting seat, which extends from a side edge of the battery pack extending laterally in a direction away from the battery pack, and the first locking member is mounted on the side edge of the battery pack extending laterally through the mounting seat.

12. The quick-change assembly according to claim 11, characterized in that: The mounting base includes a first mounting portion, a second mounting portion and a reinforcement plate, the first mounting portion is mounted on a side of the battery pack extending laterally, the second mounting portion extends from the first mounting portion in a direction away from the battery pack, the second mounting portion is provided with a mounting hole for mounting the first locking member, and the reinforcement plate is arranged at the connection between the first mounting portion and the second mounting portion and extends in a direction perpendicular to the second mounting portion.

13. The quick-change assembly according to claim 10, characterized in that: The first locking member includes a first lock body extending vertically and at least one second lock body extending laterally outward from the end of the first lock body. When the battery pack moves in a horizontal direction, the second lock body is hung in the hanging groove of the first locking structure, and the first lock body is inserted into the avoidance groove of the first locking structure.

14. An electric vehicle, characterized in that: The electric vehicle comprises the quick-change assembly as described in any one of claims 9-13.

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