Quick-change support and electric vehicle

Abstract

The utility model discloses a quick change support and an electric vehicle, the quick change support is used for being installed on a vehicle beam of the electric vehicle to fix a battery pack, the quick change support comprises a cantilever beam module and a reinforcing connection module, the cantilever beam module is arranged on the side edge of the vehicle beam, the reinforcing connection module is arranged on the upper portion of the vehicle beam, and the cantilever beam module is connected with the reinforcing connection module. The reinforcing connection module of the quick-change support is arranged above the vehicle beam, so that the whole quick-change support is lifted relative to the vehicle beam, the space occupied by the quick-change support on the side face of the vehicle beam is reduced, and the side face area of the vehicle beam can have a larger space for installing other structures of the electric vehicle. The possibility that the quick-change support interferes with other structures of the electric vehicle is reduced, normal installation of the quick-change support is guaranteed, the side face and the upper end face of the vehicle beam can serve as areas connected with the quick-change support, and therefore the connecting strength of the quick-change support and the vehicle beam is enhanced, and the quick-change support can support the battery pack more stably.

Description

Technical Field

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

[0002] Nowadays, electric vehicles are becoming more and more popular among consumers. The energy used by electric vehicles is basically electricity. Electric vehicles need to be charged after the electricity is used up. Due to the limitations of current battery technology and charging technology, it takes a long time to fully charge electric vehicles, which is not as simple and fast as refueling fuel vehicles. Therefore, in order to reduce the waiting time of users, replacing the battery when the electric vehicle's power is running out is an effective means.

[0003] In a battery-swap electric vehicle, the battery pack is connected to the bottom beam of the electric vehicle through a quick-change bracket. When the battery pack runs out of power, just remove the depleted battery pack from the quick-change bracket and install the fully charged battery pack on the quick-change bracket. Therefore, compared with a rechargeable electric vehicle, a battery-swap electric vehicle does not need to wait for a long time for the electric vehicle to charge, which ensures the endurance of the electric vehicle.

[0004] The quick-change bracket in the prior art is usually only connected to the side of the vehicle beam in the width direction of the electric vehicle, which easily leads to interference between the quick-change bracket and other vehicle structures on the side of the vehicle beam, and the quick-change bracket occupies too much side space of the vehicle beam. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art that the quick-change bracket is only connected to the side of the vehicle beam, occupies too much space on the side of the vehicle beam, and easily interferes with other structures of the electric vehicle, and provides a quick-change bracket and an electric vehicle.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] A quick-change bracket is used to be installed on a beam of an electric vehicle to fix a battery pack, the quick-change bracket comprising a cantilever beam module and a reinforcement connection module, wherein:

[0008] The cantilever beam module is arranged on the side of the vehicle beam, the reinforcement connection module is arranged on the upper part of the vehicle beam, and the cantilever beam module is connected to the reinforcement connection module.

[0009] In the present solution, the reinforcement connection module of the quick-change bracket is arranged above the vehicle beam so that the entire quick-change bracket is raised relative to the vehicle beam, thereby reducing the space occupied by the quick-change bracket on the side of the vehicle beam, so that the side area of ​​the vehicle beam can have more space to install other structures of the electric vehicle, reduce the possibility of interference between the quick-change bracket and other structures of the electric vehicle, and ensure the normal installation of the quick-change bracket. The quick-change bracket is further designed with a reinforcement connection module on the basis of the cantilever beam module, which can enhance the structural strength of the quick-change bracket itself. The cantilever beam module is arranged on the side of the vehicle beam, and the reinforcement connection module is arranged on the upper part of the vehicle beam, so that the side and upper end surface of the vehicle beam can be used as areas for connection with the quick-change bracket, thereby enhancing the connection strength between the quick-change bracket and the vehicle beam, so that the quick-change bracket can more stably support the battery pack.

[0010] Preferably, the reinforcement connection module comprises a reinforcement connection structure, and the cantilever beam module is connected to the side of the vehicle beam through the reinforcement connection structure;

[0011] Preferably, the quick-change bracket meets one or more of the following conditions:

[0012] a1. The reinforcement connection structure is a stacked structure;

[0013] b1. An angle is formed between the extension direction of the reinforcement connection structure and the extension direction of the cantilever beam module.

[0014] In this solution, the cantilever beam module is connected to the vehicle beam through a reinforced connection structure, which increases the connection area between the reinforced connection structure and the vehicle beam. The increase in the reinforced connection structure also increases the connection area between the reinforced connection structure and the cantilever beam module, thereby ensuring the connection strength between the quick-change bracket and the vehicle beam while improving the structural strength of the quick-change bracket itself. The stacked reinforced connection structure can reduce the processing difficulty of a single structure, and is easy to process and assemble. There is an angle between the extension direction of the reinforced connection structure and the extension direction of the cantilever beam module to increase the connection area between the two and improve the connection strength between the two.

[0015] Preferably, the quick-change bracket meets one or more of the following conditions:

[0016] a2. Along the width direction of the electric vehicle, two ends of the reinforced connection structure are respectively connected to the vehicle beam and the cantilever beam module;

[0017] b2. The reinforcement connection structure extends along the length direction of the electric vehicle, and the cantilever beam module extends along the width direction of the electric vehicle.

[0018] In this solution, the vehicle beam and cantilever beam module are respectively arranged at the two ends of the reinforced connection structure to prevent the vehicle beam and the cantilever beam module from interfering with each other, ensure that both have enough space to connect with the reinforced connection structure, and ensure the structural strength of the quick-change bracket itself and the connection strength between the quick-change bracket and the vehicle beam. Since the reinforced connection structure is connected to the vehicle beam and the vehicle beam extends along the length direction of the electric vehicle, the extension of the reinforced connection structure along the length direction of the electric vehicle can increase the connection area between the reinforced connection structure and the vehicle beam and improve the connection strength between the two. The cantilever beam module extends along the width direction of the electric vehicle, which is convenient for connection with the reinforced connection structure.

[0019] Preferably, the reinforced connection structure comprises a stacked support portion and a reinforcement portion; the cantilever beam module is connected to at least one side of the vehicle beam through the stacked support portion and the reinforcement portion;

[0020] Preferably, the quick-change bracket meets one or more of the following conditions:

[0021] a3. Both the supporting portion and the reinforcing portion extend along the length direction of the electric vehicle;

[0022] b3, the support portion and the reinforcement portion are stacked along the width direction of the electric vehicle;

[0023] c3, the upper part of the support part is closely connected to the upper part of the reinforcement part;

[0024] d3. The side of the reinforcing part extends downward along the height direction of the electric vehicle and is connected to the upper end surface of the vehicle beam; the side of the supporting part extends downward along the height direction of the electric vehicle and is successively connected to the side of the reinforcing part and the side surface of the vehicle beam.

[0025] In this solution, the support part and the reinforcement part are designed as two independent structures, which reduces the processing difficulty of a single structure while ensuring the structural strength, making it easy to process and assemble. The support part and the reinforcement part extend in the same direction, which can increase the connection area between the two and ensure the connection strength between the two. The support part and the reinforcement part extend along the length direction of the electric vehicle, which can increase the connection area between the reinforced connection structure and the beam and ensure the connection strength between the two. The support part and the reinforcement part are stacked along the width direction of the electric vehicle, which can improve the torsion resistance and structural strength of the quick-change bracket and increase the service life of the quick-change bracket. The support part is connected to the reinforcement part and the beam from top to bottom in sequence, and the beam is located below the reinforcement part to avoid interference between the reinforcement part and the beam, and the beam can provide support for the reinforcement part, thereby improving the connection effect between the quick-change bracket and the beam.

[0026] Preferably, the quick-change bracket meets one or more of the following conditions:

[0027] a4. The support portion comprises a support portion body and a first bending portion, and the upper end of the support portion body is bent toward the direction of the reinforcing portion to form the first bending portion;

[0028] The reinforcing portion comprises a reinforcing portion body and a second bending portion, wherein the upper end of the reinforcing portion body is bent in a direction away from the supporting portion to form the second bending portion;

[0029] The first bending portion covers the second bending portion and is connected to the second bending portion;

[0030] b4. The reinforcing portion includes a reinforcing portion body and a third bending portion, wherein the lower end of the reinforcing portion body is bent in a direction away from the supporting portion to form the third bending portion, and the third bending portion is used to abut against the upper end surface of the vehicle beam.

[0031] In this solution, the first bent portion and the second bent portion increase the connection area between the support portion and the reinforcement portion, and can improve the connection strength between the two. The vehicle beam can provide support for the reinforcement portion, and improve the connection effect between the quick-change bracket and the vehicle beam.

[0032] Preferably, the cantilever beam module includes a locking beam connected to the side of the vehicle beam, and the locking beam is used to connect to the battery pack; the reinforcement portion and the locking beam are respectively connected to the two end surfaces of the support portion in the width direction of the electric vehicle; along the width direction of the electric vehicle, the locking beam is connected to the side of the vehicle beam through the support portion and the reinforcement portion.

[0033] In this solution, the battery pack is fixed on the quick-change bracket by a locking beam. The reinforcement part and the locking beam are respectively arranged on both sides of the support part in the width direction of the electric vehicle, which can avoid interference between the reinforcement part and the locking beam, reduce the size of the support part, reduce the part of the support part that exceeds the vehicle beam, ensure the anti-torsion ability and structural strength of the quick-change bracket, and improve the service life of the quick-change bracket.

[0034] Preferably, the quick-change bracket meets one or more of the following conditions:

[0035] a5. The cantilever beam module further includes a connecting member, through which the locking beam is connected to the reinforcing connection structure; the connecting member is fixed to an end surface of the support portion in the width direction of the electric vehicle; the locking beam is sleeved on the connecting member and connected to the reinforcing connection structure;

[0036] b5. The cantilever beam module further includes a first reinforcement member, which is disposed outside the locking beam and is respectively connected to the locking beam and the support portion in the reinforcement connection structure, and is used to reinforce the connection between the reinforcement connection structure and the locking beam;

[0037] c5. The cantilever beam module also includes an avoidance member, which is connected to the support portion; along the width direction of the electric vehicle, the avoidance member protrudes from one end of the support portion away from the locking beam toward the locking beam, and a hollow avoidance space is formed at one end of the avoidance member away from the locking beam.

[0038] In this solution, the locking beam is indirectly connected to the support part through a connecting piece, which can reduce the difficulty of connecting the two. The first reinforcing member is used to enhance the connection strength between the support part and the locking beam, thereby improving the structural strength. The avoidance space is used to avoid other components on the electric vehicle, thereby improving the application scope of the quick-change bracket.

[0039] Preferably, the locking beam extends along the width direction of the electric vehicle;

[0040] When the cantilever beam module includes the connecting member, the connecting member includes a top plate, a bottom plate, a first side plate and a second side plate, the top plate and the bottom plate are spaced apart along the height direction of the electric vehicle, the first side plate and the second side plate are spaced apart along the length direction of the electric vehicle, and the first side plate and the second side plate are respectively connected to the top plate and the bottom plate at both ends in the height direction of the electric vehicle.

[0041] In this solution, the above arrangement enables the four wall surfaces of the locking beam to be connected to the connecting piece, thereby increasing the connection area between the two and improving the connection effect between the two.

[0042] Preferably, the quick-change bracket meets one or more of the following conditions:

[0043] a6. The top plate comprises a top plate body and a first protruding portion, wherein one end of the top plate body facing the support portion protrudes outwardly along the width direction of the electric vehicle to form the first protruding portion, and one end of the support portion facing the locking beam is recessed inwardly to form a first recessed portion, and the first protruding portion is accommodated in the first recessed portion;

[0044] b6. The bottom plate comprises a bottom plate body and a second protruding portion, wherein one end of the bottom plate body toward the support portion protrudes outwardly along the width direction of the electric vehicle to form the second protruding portion, and one end of the support portion toward the locking beam is recessed inwardly to form a second recessed portion, and the second protruding portion is accommodated in the second recessed portion;

[0045] c6. The first side panel is an integral structure; or, the first side panel includes a plurality of side panel units spaced apart along the height direction of the electric vehicle;

[0046] d6. The second side panel is an integral structure; or, the second side panel includes a plurality of side panel units spaced apart along the height direction of the electric vehicle.

[0047] In this solution, the cooperation between the protrusion and the recess can realize the rapid positioning of the top plate and / or the bottom plate relative to the support part, thereby improving the assembly efficiency. The integral side plate has fewer processing steps and is more convenient to install. The split side plate has a low overall weight, which can reduce the overall weight of the quick-change bracket.

[0048] Preferably, when the cantilever beam module includes a connecting member and a first reinforcement member, the cantilever beam module further includes a first fastener, and the first reinforcement member, the locking beam, the first side plate and the second side plate are connected by the first fastener.

[0049] In this solution, multiple structures are connected to each other through the same first fastener, which can reduce the number of fasteners and connecting holes on each structure, making the structure more compact.

[0050] Preferably, when the cantilever beam module includes the avoidance member, the quick-change bracket satisfies one or more of the following conditions:

[0051] a7. A first avoidance portion is provided at one end of the first side plate facing the support portion, and the first avoidance portion abuts against the avoidance member;

[0052] b7. A second avoidance portion is provided at one end of the second side plate facing the support portion, and the second avoidance portion abuts against the avoidance member.

[0053] In this solution, the first side plate and / or the second side plate are designed to be adapted to the shape of the avoidance member to prevent interference between them.

[0054] Preferably, the quick-change bracket comprises a cantilever beam arranged on the vehicle beam along the width direction of the electric vehicle, and the cantilever beam comprises two cantilever beam modules arranged symmetrically relative to the vehicle beam;

[0055] Preferably, the quick-change bracket meets one or more of the following conditions:

[0056] a8. The reinforcement connection module further includes a center beam, and two cantilever beam modules are respectively arranged on both sides of the center beam in the width direction of the electric vehicle, and both ends of the center beam in the width direction of the electric vehicle are respectively connected to the cantilever beam modules on the corresponding sides;

[0057] b8. Each of the cantilever beam modules is connected to the side of the vehicle beam through the reinforced connection structure on the corresponding side;

[0058] c8. Each of the cantilever beam modules has a locking beam, and the locking beam is connected to the supporting portion in the reinforced connection structure on the corresponding side.

[0059] In this solution, cantilever beam modules are provided on both sides of the vehicle beam, so that both sides of the vehicle beam can evenly bear the force from the cantilever beam modules, thereby improving the connection strength between the vehicle beam and the quick-change bracket. The center beam is used to connect the two cantilever beam modules into a whole, ensuring the relative position accuracy of the two cantilever beam modules and improving the success rate of battery replacement. Each cantilever beam module includes a locking beam, so that the two cantilever beam modules can lock the battery pack, thereby improving the locking effect of the battery pack.

[0060] Preferably, when the reinforced connection module includes the central beam, the quick-change bracket further includes a second reinforcement member, the second reinforcement member is respectively connected to the central beam and the reinforcement portion in the reinforced connection structure, and the second reinforcement member is used to reinforce the connection between the reinforced connection structure and the central beam;

[0061] Preferably, the quick-change bracket meets one or more of the following conditions:

[0062] a9. The quick-change bracket further includes a second fastener, and the support portion, the reinforcement portion and the second reinforcement are connected by the second fastener;

[0063] b9. The reinforcing portion is arranged at one end of the supporting portion close to another cantilever beam module.

[0064] In this solution, the second reinforcement is used to enhance the connection strength between the reinforcement part and the center beam, thereby improving the structural strength. By using the same second fastener to realize the mutual connection between multiple structures, the number of fasteners and connection holes on each structure can be reduced, making the structure more compact. The reinforcement part is arranged at one end of the support part close to another cantilever beam module, that is, the reinforcement part is arranged at one end of the support part close to the vehicle beam, so that the reinforcement part can be arranged in the space at the vehicle beam, thereby improving the space utilization rate.

[0065] Preferably, the cantilever beam comprises a front cantilever beam and a rear cantilever beam, the front cantilever beam and the rear cantilever beam are arranged on the vehicle beam at intervals along the length direction of the electric vehicle, and the battery pack is used to be arranged between the front cantilever beam and the rear cantilever beam.

[0066] In this solution, both ends of the battery pack in the length direction of the electric vehicle are respectively connected to the front cantilever beam and the rear cantilever beam to ensure the stability of the battery pack after installation and improve the locking effect of the battery pack.

[0067] Preferably, the reinforcement connection module of the front cantilever beam further includes a third avoidance portion, and the third avoidance portion is formed by being recessed upward from the reinforcement connection module toward one end surface of the beam in the height direction of the electric vehicle.

[0068] In this solution, the third avoidance portion is used to avoid other structures on the electric vehicle, prevent the front cantilever beam from interfering with other structures on the electric vehicle, and ensure normal installation of the quick-change bracket.

[0069] Preferably, the third avoidance portion is arranged on the center beam of the front cantilever beam, and is located at one end of the center beam of the front cantilever beam facing the vehicle beam in the height direction of the electric vehicle.

[0070] In this solution, since the center beam usually spans across the two beams of an electric vehicle, and other structural parts are installed before the two beams of some electric vehicles, the third avoidance portion is arranged on the center beam, which can effectively prevent the front cantilever beam from interfering with other structures on the electric vehicle and ensure the normal installation of the quick-change bracket.

[0071] Preferably, the height of the reinforcement connection module of the front cantilever beam in the height direction of the electric vehicle is greater than the height of the reinforcement connection module of the rear cantilever beam in the height direction of the electric vehicle.

[0072] In the present solution, the above-mentioned setting ensures the strength of the reinforcement connection module of the front cantilever beam by increasing the height of the reinforcement connection module of the front cantilever beam, so that when the reinforcement connection module of the front cantilever beam is provided with a third avoidance portion, the strength of the reinforcement connection module of the front cantilever beam will not become very small, thereby ensuring the strength of the front cantilever beam.

[0073] Preferably, the lower end of the cantilever beam module of the front cantilever beam is flush with the lower end of the cantilever beam module of the rear cantilever beam, and the height of the cantilever beam module of the front cantilever beam in the height direction of the electric vehicle is greater than the height of the cantilever beam module of the rear cantilever beam in the height direction of the electric vehicle.

[0074] In this solution, the lower end of the cantilever beam module of the front cantilever beam is flush with the lower end of the cantilever beam module of the rear cantilever beam, which is used to ensure that after the battery pack is fixed to the electric vehicle through the cantilever beam module, the battery pack can remain horizontal to ensure stable power supply of the battery pack. The height of the cantilever beam module of the front cantilever beam in the height direction of the electric vehicle is greater than the height of the cantilever beam module of the front cantilever beam in the height direction of the electric vehicle, so as to increase the connection area between the cantilever beam module of the front cantilever beam and the reinforced connection module of the front cantilever beam, thereby increasing the connection strength between the two.

[0075] An electric vehicle comprises a vehicle beam, a battery pack and the quick-change bracket as described above, wherein the quick-change bracket is connected to the vehicle beam, and the battery pack is locked to the quick-change bracket.

[0076] In this solution, the battery pack is fixed to the electric vehicle through a quick-change bracket to provide power for the electric vehicle.

[0077] Preferably, the electric vehicle meets one or more of the following conditions:

[0078] a10. A cantilever beam module is respectively provided on both sides of the vehicle beam, and a reinforcement connection module is provided on the vehicle beam; two cantilever beam modules are respectively provided on both sides of the reinforcement connection module, and the two cantilever beam modules are respectively connected to the vehicle beam;

[0079] b10. There are two vehicle beams, which are spaced apart along the width direction of the electric vehicle, and the cantilever beam module is connected to the outer side of one of the vehicle beams along the width direction of the electric vehicle.

[0080] In this solution, the reinforcement connection module connects the cantilever beam modules on both sides of the beam to ensure the relative position accuracy of the two cantilever beam modules and improve the success rate of battery replacement. The distance between the two beams of an electric vehicle in the width direction of the vehicle is usually short, and there is not enough space to install the cantilever beam module. The cantilever beam module is set on the outside of the beam to facilitate the installation of the cantilever beam module.

[0081] The positive progressive effect of the utility model is that the reinforcement connection module of the quick-change bracket is arranged above the vehicle beam, so that the entire quick-change bracket is raised relative to the vehicle beam, thereby reducing the space occupied by the quick-change bracket on the side of the vehicle beam, so that the side area of ​​the vehicle beam can have more space to install other structures of the electric vehicle, reduce the possibility of interference between the quick-change bracket and other structures of the electric vehicle, and ensure the normal installation of the quick-change bracket. The quick-change bracket is further designed with a reinforcement connection module on the basis of the cantilever beam module, which can enhance the structural strength of the quick-change bracket itself. The cantilever beam module is arranged on the side of the vehicle beam, and the reinforcement connection module is arranged on the upper part of the vehicle beam, so that the side and upper end surface of the vehicle beam can be used as areas connected to the quick-change bracket, thereby enhancing the connection strength between the quick-change bracket and the vehicle beam, so that the quick-change bracket can more stably support the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Figure 1 It is a partial structural schematic diagram of an electric vehicle according to an embodiment of the utility model.

[0083] Figure 2 It is a schematic diagram of the three-dimensional structure of the cooperation between the vehicle beam and the quick-change bracket according to one embodiment of the utility model.

[0084] Figure 3 The figure is a three-dimensional structural schematic diagram of a quick-change bracket according to an embodiment of the utility model.

[0085] Figure 4 This is a side structural schematic diagram of the cooperation between the vehicle beam and the quick-change bracket according to one embodiment of the utility model.

[0086] Figure 5 The figure is a schematic diagram of the three-dimensional structure of the front cantilever beam according to an embodiment of the utility model.

[0087] Figure 6 It is a schematic diagram of the three-dimensional structure of the reinforcement connection module of the front cantilever beam according to one embodiment of the utility model.

[0088] Figure 7 Another three-dimensional structural schematic diagram of the reinforcement connection module of the front cantilever beam according to an embodiment of the utility model.

[0089] Figure 8 It is a schematic diagram of the three-dimensional structure of the reinforcement part and the center beam in one embodiment of the utility model.

[0090] Fig. 9 It is a schematic diagram of the three-dimensional structure of a support portion according to an embodiment of the utility model.

[0091] Fig.10 It is a schematic diagram of the three-dimensional structure of a locking beam according to an embodiment of the utility model.

[0092] Fig.11 It is a schematic diagram of the three-dimensional structure of the reinforcement connection structure and the connection piece according to one embodiment of the utility model.

[0093] Fig.12 This is a schematic diagram of the internal structure of a cantilever beam module according to an embodiment of the utility model.

[0094] Fig.13 This is a schematic diagram of the internal structure of the reinforcement connection structure and the connection piece according to one embodiment of the utility model.

[0095] Fig.14 The figure is a schematic diagram of the three-dimensional structure of a rear cantilever beam according to an embodiment of the utility model.

[0096] Fig.15 It is a schematic diagram of the three-dimensional structure of the reinforcement connection module of the rear cantilever beam according to one embodiment of the utility model.

[0097] Fig.16 This is another side view of the structure of the cooperation between the vehicle beam and the quick-change bracket in one embodiment of the utility model.

[0098] Description of reference numerals:

[0099] Quick-change bracket 11, battery pack 12, vehicle beam 13, fixed beam 21, front cantilever beam 22, rear cantilever beam 23, cantilever beam module 3, locking beam 31, avoidance member 32, avoidance space 321, second recessed portion 322, connecting member 33, top plate 331, top plate body 3311, first protruding portion 3312, bottom plate 332, bottom plate body 3321, second protruding portion 3322, first side plate 333, first avoidance portion 3331, second side plate 334, second avoidance portion 3341 , side panel unit 3342, reinforced connection module 4, reinforced connection structure 41, support part 411, support part main body 4111, first bending part 4112, first recessed part 4113, fourth avoidance part 4114, reinforcement part 412, reinforcement part main body 4121, second bending part 4122, third bending part 4123, center beam 42, third avoidance part 421, first reinforcement 51, first fastener 52, second reinforcement 53, second fastener 54, third reinforcement 55. DETAILED DESCRIPTION

[0100] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0101] This embodiment provides an electric vehicle, such as Figure 1-Figure 3 As shown, the electric vehicle includes a vehicle body (not fully shown in the figure), a quick-change bracket 11 and a battery pack 12.

[0102] like Figure 1 As shown, the vehicle body includes a vehicle beam 13, and the vehicle beam 13 is along the length direction of the electric vehicle ( Figure 1 The beams 13 extend in the X direction of the vehicle and are arranged at the chassis of the vehicle body to support the entire electric vehicle. In this embodiment, there are two beams 13, both of which extend in the length direction of the electric vehicle and in the width direction ( Figure 1 In the Y direction of the vehicle beam 13, the vehicle beams 13 are arranged at intervals to better support the entire electric vehicle. In other alternative embodiments, the number of the vehicle beams 13 can be designed according to actual needs.

[0103] like Figure 2As shown, the quick-change bracket 11 is installed on the vehicle beam 13, and the battery pack 12 is locked to the quick-change bracket 11. Specifically, the quick-change bracket 11 is arranged at the chassis position of the vehicle body to be connected to the vehicle beam 13, and the quick-change bracket 11 is used to fix the battery pack 12 to ensure that the battery pack 12 can stably supply power to the electric vehicle. The battery pack 12 is located at the lower end of the quick-change bracket 11 and is locked to the quick-change bracket 11 in a detachable connection manner, and then the quick-change bracket 11 is used to realize a detachable connection with the vehicle body to realize the replacement of the battery pack 12. Among them, the specific connection method between the battery pack 12 and the quick-change bracket 11 is no longer described in detail in this embodiment, and those skilled in the art can refer to the existing connection methods in the prior art to realize the detachable connection between the battery pack 12 and the quick-change bracket 11.

[0104] During the battery replacement process, the battery replacement equipment enters the chassis of the electric vehicle from the side of the electric vehicle, installs and removes the battery pack 12 from the bottom of the electric vehicle, thereby installing the battery pack 12 on the quick-change bracket 11, or removing the battery pack 12 from the quick-change bracket 11, to achieve lateral battery replacement operation of the electric vehicle.

[0105] like Figure 2 , Figure 4 and Figure 5 As shown, the quick-change bracket 11 includes a cantilever beam module 3 and a reinforcement connection module 4, the cantilever beam module 3 is arranged on the side of the vehicle beam 13, the reinforcement connection module 4 is arranged on the upper part of the vehicle beam 13, and the cantilever beam module 3 is connected to the reinforcement connection module 4. Specifically, the quick-change bracket 11 includes two cantilever beam modules 3, one cantilever beam module 3 is arranged on each side of the vehicle beam 13; the reinforcement connection module 4 is arranged on the upper span of the vehicle beam 13, and the reinforcement connection module 4 is connected to the vehicle beam 13; the two cantilever beam modules 3 are respectively arranged on both sides of the reinforcement connection module 4, and the two cantilever beam modules 3 are respectively connected to the vehicle beam 13. The cantilever beam module 3 is connected to the reinforcement connection module 4, and the reinforcement connection module 4 is connected to the vehicle beam 13, which is used to firmly connect the cantilever beam module 3 to the vehicle beam 13 through the reinforcement connection module 4. The cantilever beam module 3 on the side of the vehicle beam 13 is used to be detachably connected to the battery pack 12 to realize the lateral battery replacement operation of the electric vehicle.

[0106] The quick-change bracket in the prior art is usually connected only to the side of the beam in the width direction of the electric vehicle to achieve the fixation of the quick-change bracket on the electric vehicle. However, since the existing quick-change bracket occupies too much space on the side of the beam, and the area of ​​the side of the beam is limited, it is easy to cause the quick-change bracket to interfere with other structures of the electric vehicle on the side of the beam, affecting the installation of the quick-change bracket. It also leads to a limited area where the quick-change bracket can be connected to the beam, which leads to a low connection strength between the quick-change bracket and the beam in the prior art.

[0107] In this embodiment, the reinforcement connection module 4 of the quick-change bracket 11 is arranged above the vehicle beam 13, so that the entire quick-change bracket 11 is raised relative to the vehicle beam 13, thereby reducing the space occupied by the quick-change bracket 11 on the side of the vehicle beam 13, so that the side area of ​​the vehicle beam 13 can have more space to install other structures of the electric vehicle, reduce the possibility of interference between the quick-change bracket 11 and other structures of the electric vehicle, and ensure the normal installation of the quick-change bracket 11. The quick-change bracket 11 is further designed with a reinforcement connection module 4 on the basis of the cantilever beam module 3, which can enhance the structural strength of the quick-change bracket 11 itself. The cantilever beam module 3 is arranged on the side of the vehicle beam 13, and the reinforcement connection module 4 is arranged on the upper part of the vehicle beam 13, so that the side and upper end surface of the vehicle beam 13 can be used as the area connected to the quick-change bracket 11, that is, the area of ​​the connection area between the vehicle beam 13 and the quick-change bracket 11 is increased, thereby enhancing the connection strength between the quick-change bracket 11 and the vehicle beam 13, so that the quick-change bracket 11 can support the battery pack 12 more stably.

[0108] Specifically, Figure 6 As shown, the reinforcement connection module 4 includes a reinforcement connection structure 41, which extends along the length direction of the electric vehicle and is in a stacked structure. Figure 6 As shown, the reinforcement connection structure 41 includes a stacked support portion 411 and a reinforcement portion 412, and the support portion 411 and the reinforcement portion 412 both extend along the length direction of the electric vehicle to increase the connection area between the reinforcement connection structure 41 and the vehicle beam 13, and ensure the connection strength between the two. The support portion 411 and the reinforcement portion 412 extend in the same direction, which can further increase the connection area between the two and ensure the connection strength between the two.

[0109] Furthermore, if Figure 4 and Figure 6 As shown, the support portion 411 and the reinforcement portion 412 are stacked along the width direction of the electric vehicle to improve the anti-torsion capability and structural strength of the quick-change bracket 11 and to increase the service life of the quick-change bracket 11 .

[0110] In other alternative embodiments, the reinforcement connection structure 41 may not completely extend along the length direction of the electric vehicle, and the extension direction of the reinforcement connection structure 41 and the length direction of the electric vehicle may have a certain angle. In this embodiment, the reinforcement connection structure 41 is designed to extend along the length direction of the electric vehicle because the beam 13 also extends along the length direction of the electric vehicle. Therefore, the extension of the reinforcement connection structure 41 along the length direction of the electric vehicle can increase the connection area between the reinforcement connection structure 41 and the beam 13, and improve the connection strength between the two.

[0111] In other alternative embodiments, the reinforcement connection structure 41 may not be a stacked structure, but may adopt an integrated structure. The present embodiment adopts a stacked structure, that is, the reinforcement connection structure 41 is designed to be formed by splicing together a plurality of independent structures. While ensuring the structural strength, it can reduce the processing difficulty of a single structure, making it easy to process and assemble.

[0112] In other alternative embodiments, the support portion 411 and the reinforcement portion 412 may not extend completely along the length direction of the electric vehicle, and the extension direction of the support portion 411 and the reinforcement portion 412 may have a certain angle with the length direction of the electric vehicle. The extension directions of the support portion 411 and the reinforcement portion 412 may be completely the same or may not be completely the same, that is, the extension directions of the two have a certain angle.

[0113] In other alternative embodiments, the support portion 411 and the reinforcement portion 412 may not be completely stacked along the width direction of the electric vehicle, and the stacking direction of the two may have a certain angle with the width direction of the electric vehicle.

[0114] like Figure 5 In the reinforcement connection structure 41 shown, the support portion 411 is stacked on the reinforcement portion 412. Specifically, the upper portion of the support portion 411 is connected to the upper portion of the reinforcement portion 412. The side portion of the reinforcement portion 412 extends downward along the height direction of the electric vehicle and is connected to the upper end surface of the beam 13. The side portion of the support portion 411 extends downward along the height direction of the electric vehicle and is connected to the side portion of the reinforcement portion 412 and the side of the beam 13 in sequence.

[0115] Or, if Fig.14 In the reinforcement connection structure 41 shown, the side of the reinforcement part 412 extends downward along the height direction of the electric vehicle and is connected to the upper end surface of the beam 13. The side of the support part 411 extends downward along the height direction of the electric vehicle and is fitted and connected with the side of the reinforcement part 412 and the side of the beam 13 in sequence.

[0116] In this embodiment, Figure 5 In the example of the reinforcement connection structure 41 of the front end of the electric vehicle, the upper part of the support part 411 is bent and extended to the upper part of the reinforcement part 412, and the upper part of the support part 411 is closely connected to the upper part of the reinforcement part 412. Fig.14 As an example, in the reinforcement connection structure 41 of the rear end of the electric vehicle, the upper portion of the support portion 411 is not bent and extended to the upper portion of the reinforcement portion 412 .

[0117] In other embodiments, according to specific application requirements, in the reinforced connection structure 41 at the rear end of the electric vehicle, the upper part of the support part 411 is bent and extended to the upper part of the reinforcement part 412, and the upper part of the support part 411 is fitted and connected to the upper part of the reinforcement part 412, so as to increase the connection area between the support part 411 and the reinforcement part 412, thereby enhancing the connection strength between the support part 411 and the reinforcement part 412. Specifically, Figure 6-Figure 8 As shown, the reinforcing part 412 is entirely arranged above the vehicle beam 13. The reinforcing part 412 in this embodiment is a U-shaped beam, and the reinforcing part 412 includes a reinforcing part body 4121, a second bending part 4122, and a third bending part 4123. The upper end of the reinforcing part body 4121 is bent in a direction away from the support part 411 to form the second bending part 4122, and the second bending part 4122 is connected to the support part 411. The lower end of the reinforcing part body 4121 extends downward along the height direction of the electric vehicle and is bent in a direction away from the support part 411 to form the third bending part 4123, and the third bending part 4123 abuts against the upper end surface of the vehicle beam 13 to achieve the connection between the reinforcing part body 4121 and the vehicle beam 13, so that the vehicle beam 13 can provide support force for the reinforcing part 412, and improve the connection effect between the quick-change bracket 11 and the vehicle beam 13. The reinforcing portion main body 4121 refers to the side portion of the reinforcing portion 412 , the second bending portion 4122 refers to the upper portion of the reinforcing portion 412 , and the third bending portion 4123 refers to the lower portion of the reinforcing portion 412 .

[0118] like Figure 6-Figure 8 In the example of the reinforcement connection structure 41 of the front end of the electric vehicle, the support portion 411 includes a support portion body 4111 and a first bent portion 4112. The upper end of the support portion body 4111 is bent toward the direction of the reinforcement portion 412 to form the first bent portion 4112. The first bent portion 4112 covers the upper part of the second bent portion 4122 and is connected to the second bent portion 4122. The first bent portion 4112 and the second bent portion 4122 increase the connection area between the support portion 411 and the reinforcement portion 412, thereby improving the connection strength between the two. The lower end of the support body 4111 extends downward along the height direction of the electric vehicle to exceed the reinforcement body 4121. The portion of the support body 4111 that does not exceed the reinforcement body 4121 is connected to the reinforcement body 4121. The portion of the support body 4111 that exceeds the reinforcement body 4121 is connected to the side of the beam 13 to avoid interference between the reinforcement 412 and the beam 13 when the support 411 is connected to the beam 13. The support body 4111 refers to the side of the support 411, and the first bent portion 4112 refers to the upper portion of the support 411. Fig.14 In the example of the reinforcing connection structure 41 for the rear end of the electric vehicle, the supporting portion 411 does not have the first bending portion 4112 .

[0119] In other alternative embodiments, the reinforcing portion 412 may also be arranged at other positions of the supporting portion 411. In other alternative embodiments, the supporting portion 411 may not be provided with the first bending portion and / or the reinforcing portion 412 may not be provided with the second bending portion, and the supporting portion 411 and the reinforcing portion 412 are only connected to each other at the end faces in the width direction of the electric vehicle. In other alternative embodiments, the reinforcing portion 412 may not be provided with the third bending portion 4123, and the reinforcing portion 412 is connected to the vehicle beam 13 through the supporting portion 411.

[0120] like Figure 5 and Figure 6 As shown, the cantilever beam module 3 is connected to the side of the vehicle beam 13 through the reinforcement connection structure 41, that is, the cantilever beam module 3 is connected to at least one side of the vehicle beam 13 through the stacked support portion 411 and the reinforcement portion 412, and then the connection between the cantilever beam module 3 and the vehicle beam 13 is realized through the reinforcement connection structure 41, thereby increasing the connection area between the reinforcement connection structure 41 and the vehicle beam 13. The increase in the reinforcement connection structure 41 also increases the connection area between the reinforcement connection structure 41 and the cantilever beam module 3, thereby ensuring the connection strength between the quick-change bracket 11 and the vehicle beam 13 while improving the structural strength of the quick-change bracket 11 itself.

[0121] like Figure 5 As shown, the cantilever beam module 3 extends along the width direction of the electric vehicle, and there is an angle between the extension direction of the reinforcement connection structure 41 and the extension direction of the cantilever beam module 3. Specifically, the reinforcement connection structure 41 extends along the length direction of the electric vehicle, and the extension direction of the reinforcement connection structure 41 is perpendicular to the extension direction of the cantilever beam module 3, which facilitates the connection between the cantilever beam module 3 and the reinforcement connection structure 41, and can increase the connection area between the two and improve the connection strength between the two.

[0122] like Figure 4 As shown, along the width direction of the electric vehicle, the two ends of the reinforcement connection structure 41 are respectively connected to the vehicle beam 13 and the cantilever beam module 3. Specifically, the vehicle beam 13 and the cantilever beam module 3 are respectively connected to the two ends of the support portion 411 in the width direction of the electric vehicle to prevent the vehicle beam 13 and the cantilever beam module 3 from interfering with each other, ensure that both have enough space to connect with the reinforcement connection structure 41, and ensure the structural strength of the quick-change bracket 11 itself and the connection strength between the quick-change bracket 11 and the vehicle beam 13. In other alternative embodiments, the vehicle beam 13 and the cantilever beam module 3 can also be connected to the same end of the support portion 411.

[0123] like Figure 5 and Fig.10As shown, the cantilever beam module 3 includes a locking beam 31 connected to the side of the vehicle beam 13, and the locking beam 31 extends along the width direction of the electric vehicle. The locking beam 31 is used to connect with the battery pack 12, and the battery pack 12 is fixed on the quick-change bracket 11 through the locking beam 31. The reinforcement part 412 and the locking beam 31 are respectively connected to the two end surfaces of the support part 411 in the width direction of the electric vehicle, which can avoid interference between the reinforcement part 412 and the locking beam 31, reduce the size of the support part 411, and reduce the part of the support part 411 that exceeds the vehicle beam 13, thereby ensuring the anti-torsion ability and structural strength of the quick-change bracket 11 and improving the service life of the quick-change bracket 11. Along the width direction of the electric vehicle, the locking beam 31 is connected to the side of the vehicle beam 13 through the support part 411 and the reinforcement part 412. Each cantilever beam module 3 has a locking beam 31 , which is connected to a supporting portion 411 in a reinforcement connection structure 41 on a corresponding side. The locking beam 31 is connected to the vehicle beam 13 through the connection between the supporting portion 411 and the vehicle beam 13 .

[0124] like Fig. 9 and Fig.11 As shown, the cantilever beam module 3 also includes an avoidance member 32, and the avoidance member 32 is connected to the support portion 411. Along the width direction of the electric vehicle, the avoidance member 32 protrudes from the end of the support portion 411 away from the locking beam 31 toward the direction close to the locking beam 31, and the end of the avoidance member 32 away from the locking beam 31 forms a hollow avoidance space 321. Specifically, the support portion 411 is provided with a through groove that penetrates in the width direction of the electric vehicle, and the end of the avoidance member 32 close to the vehicle beam 13 in the width direction of the electric vehicle is arranged in the through groove, so that the avoidance space 321 is connected to the side of the support portion 411 close to the vehicle beam 13 in the width direction of the electric vehicle, and the avoidance space 321 is used to avoid other components on the electric vehicle, thereby improving the application range of the quick-change bracket 11. Among them, the avoidance member 32 and the support portion 411 in this embodiment are connected by a fixed connection method such as welding or one-piece molding. Further, as Fig. 9 As shown, the avoidance space 321 is provided with a plurality of third reinforcement members 55, and the third reinforcement members 55 are connected to the avoidance member 32 to increase the strength of the avoidance member 32. In other alternative embodiments, if there is no structure to be avoided on the electric vehicle, the avoidance member 32 may not be provided.

[0125] like Fig.11 and Fig.12As shown, the cantilever beam module 3 also includes a connector 33, and the locking beam 31 is connected to the reinforcement connection structure 41 through the connector 33. The connector 33 is fixed to one end face of the support portion 411 in the width direction of the electric vehicle, and the locking beam 31 is sleeved on the connector 33 and connected to the reinforcement connection structure 41. Specifically, the connector 33 is fixed to one end face of the support portion 411 in the width direction of the electric vehicle away from the reinforcement portion 412, the locking beam 31 is a hollow structure and the locking beam 31 is open toward one end of the support portion 411 in the width direction of the electric vehicle, and the locking beam 31 is sleeved on the outside of the connector 33 and is detachably connected to the connector 33. Since the locking beam 31 and the support portion 411 extend in different directions, the way in which the locking beam 31 is indirectly connected to the support portion 411 through the connector 33 can reduce the difficulty of connecting the two.

[0126] like Fig.11 As shown, the connecting member 33 includes a top plate 331, a bottom plate 332, a first side plate 333 and a second side plate 334. The top plate 331 and the bottom plate 332 are arranged at intervals along the height direction of the electric vehicle, the first side plate 333 and the second side plate 334 are arranged at intervals along the length direction of the electric vehicle, and the first side plate 333 and the second side plate 334 are respectively connected to the top plate 331 and the bottom plate 332 at both ends in the height direction of the electric vehicle. The four wall surfaces of the locking beam 31 are respectively connected to the top plate 331, the bottom plate 332, the first side plate 333 and the second side plate 334 of the connecting member 33, so as to increase the connection area between the two and improve the connection effect between the two.

[0127] Specifically, Fig.11 As shown, the top plate 331 of the connecting member 33 is connected to the supporting portion 411, the bottom plate 332 of the connecting member 33 is connected to the avoiding member 32, and the first side plate 333 and the second side plate 334 are both connected to the supporting portion 411 at the upper end and connected to the avoiding member 32 at the lower end. Furthermore, a first avoiding portion 3331 is provided at one end of the first side plate 333 facing the supporting portion 411, and the first avoiding portion 3331 abuts against the avoiding member 32. A second avoiding portion 3341 is provided at one end of the second side plate 334 facing the supporting portion 411, and the second avoiding portion 3341 abuts against the avoiding member 32. In this embodiment, the first side plate 333 and the second side plate 334 are designed to be adapted to the shape of the avoiding member 32 to prevent interference between them.

[0128] In other alternative embodiments, the top plate 331 , the bottom plate 332 , the first side plate 333 , and the second side plate 334 may all be connected to the support portion 411 , respectively.

[0129] In other alternative embodiments, if the first side plate 333 and / or the second side plate 334 are all connected only to the support portion 411 and are not connected to the avoidance member 32, there is no need to design the first avoidance portion 3331 and / or the second avoidance portion 3341.

[0130] Furthermore, if Fig.13 As shown, the top plate 331 includes a top plate body 3311 and a first protruding portion 3312. One end of the top plate body 3311 facing the support portion 411 protrudes outwardly along the width direction of the electric vehicle to form the first protruding portion 3312. One end of the support portion 411 facing the locking beam 31 is recessed inward to form a first recessed portion 4113. The first protruding portion 3312 and the first recessed portion 4113 cooperate to achieve rapid positioning of the top plate 331 relative to the support portion 411, thereby improving assembly efficiency.

[0131] In other alternative embodiments, the positioning between the top plate 331 and the support portion 411 may also be achieved by other means.

[0132] Furthermore, if Fig.13 As shown, the bottom plate 332 includes a bottom plate body 3321 and a second protruding portion 3322. One end of the bottom plate body 3321 facing the support portion 411 protrudes outward along the width direction of the electric vehicle to form the second protruding portion 3322. One end of the avoidance member 32 facing the locking beam 31 is recessed inward to form a second recessed portion 322. The second protruding portion 3322 is accommodated in the second recessed portion 322. The cooperation between the second protruding portion 3322 and the second recessed portion 322 can realize the rapid positioning of the bottom plate 332 relative to the support portion 411, thereby improving the assembly efficiency.

[0133] In other alternative embodiments, the positioning between the bottom plate 332 and the avoidance member 32 may also be achieved by other means.

[0134] In other alternative embodiments, if the bottom plate 332 is directly connected to the support portion 411 , the second recessed portion 322 is disposed at an end of the support portion 411 facing the locking beam 31 .

[0135] like Fig.11 As shown, the first side plate 333 in this embodiment is an integral structure, and the second side plate 334 includes a plurality of side plate units 3342 spaced apart along the height direction of the electric vehicle. The integral side plate has fewer processing steps and is more convenient to install. The split side plate has a low overall weight, which can reduce the overall weight of the quick-change bracket 11.

[0136] In other alternative embodiments, the second side plate 334 may be an integral structure, and the first side plate 333 may include a plurality of side plate units 3342 spaced apart along the height direction of the electric vehicle. Alternatively, both the first side plate 333 and the second side plate 334 may be an integral structure, or both may include a plurality of side plate units 3342 spaced apart along the height direction of the electric vehicle.

[0137] In other alternative embodiments, the locking beam 31 may also be connected to the support portion 411 in other ways.

[0138] like Figure 5 and Fig.12 As shown, the cantilever beam module 3 further includes a first reinforcement member 51 and a first fastener 52. The first reinforcement member 51 is disposed outside the locking beam 31. The first reinforcement member 51 is respectively connected to the locking beam 31 and the support portion 411 in the reinforcement connection structure 41, and is used to reinforce the connection between the reinforcement connection structure 41 and the locking beam 31, enhance the connection strength between the support portion 411 and the locking beam 31, and improve the structural strength. The first reinforcement member 51, the locking beam 31, the first side plate 333, and the second side plate 334 are connected by the first fastener 52. In this embodiment, the interconnection between multiple structures is realized by the same first fastener 52, which can reduce the number of fasteners and connection holes on each structure, making the structure more compact.

[0139] In other alternative embodiments, the first reinforcement member 51 , the locking beam 31 , the first side plate 333 , and the second side plate 334 may be connected in pairs using different fasteners.

[0140] In other alternative embodiments, if the strength is sufficient, the first reinforcement member 51 may not be provided.

[0141] Furthermore, if Figure 3 and Figure 4 As shown, the quick-change bracket includes a cantilever beam, which extends along the width direction of the electric vehicle and straddles the vehicle beam 13 in the width direction of the electric vehicle. The cantilever beam is used to connect with the battery pack 12 to fix the battery pack 12 on the electric vehicle.

[0142] In other alternative embodiments, the cantilever beam may also extend along the length direction of the electric vehicle.

[0143] Specifically, a single cantilever beam includes two cantilever beam modules 3 as mentioned above, the two cantilever beam modules 3 are symmetrically arranged relative to the vehicle beam 13, the two cantilever beam modules 3 are respectively arranged on both sides of the vehicle beam 13 and are respectively connected to the vehicle beam 13, specifically, the two cantilever beam modules 3 are respectively arranged on the sides of the two vehicle beams 13 that are away from each other in the width direction of the electric vehicle, and are connected to the vehicle beams 13 on the corresponding sides, and the two cantilever beam modules 3 are symmetrically arranged about the middle position of the two vehicle beams 13. In this embodiment, cantilever beam modules 3 are arranged on both sides of the vehicle beam 13, so that both sides of the vehicle beam 13 can evenly bear the force from the cantilever beam modules 3, thereby improving the connection strength between the vehicle beam 13 and the quick-change bracket 11.

[0144] In other alternative embodiments, the cantilever beam may also include only one cantilever beam module 3. In this state, the cantilever beam module 3 may be connected to the outer side of one of the beams 13 along the width direction of the electric vehicle (i.e., the side of one of the beams 13 away from the other beam 13 in the width direction of the electric vehicle), or when the distance between the two beams 13 in the width direction of the electric vehicle is sufficient, the cantilever beam module 3 may also be arranged between the two beams 13 in the width direction of the electric vehicle. In this embodiment, the cantilever beam module 3 is arranged on the side of the two beams 13 that are away from each other in the width direction of the electric vehicle because the distance between the two beams 13 of the electric vehicle in the width direction of the electric vehicle is usually short, and there is not enough space to install the cantilever beam module 3. The cantilever beam module 3 is arranged on the outer side of the beam 13 to facilitate the installation of the cantilever beam module 3.

[0145] Furthermore, if Figure 2 and Figure 6 As shown, the support portion 411 is arranged on the side of one of the beams 13 away from the other beam 13 in the width direction of the electric vehicle, and the reinforcement portion 412 is arranged at one end of the support portion 411 close to the other cantilever beam module 3, that is, the reinforcement portion 412 is arranged at one end of the support portion 411 close to the beam 13 in the width direction of the electric vehicle, so that the reinforcement portion 412 can be arranged in the space at the beam 13, thereby improving the space utilization. In other alternative embodiments, the reinforcement portion 412 can also be arranged at one end of the support portion 411 away from the other cantilever beam module 3 in the width direction of the electric vehicle.

[0146] In this embodiment, each cantilever beam module 3 includes a locking beam 31 for connecting to the battery pack 12, so that both cantilever beam modules 3 can lock the battery pack 12, thereby improving the locking effect of the battery pack 12. In other alternative embodiments, only a single cantilever beam module 3 may be provided with a locking beam 31 for connecting to the battery pack 12. Alternatively, the locking beams 31 in different cantilever beam modules 3 may all be connected to the support portion 411 on the corresponding side, or may be connected to the reinforcement portion 412 on the corresponding side.

[0147] Furthermore, if Figure 4 As shown, the reinforcement connection module 4 is arranged across the vehicle beam 13, and the two cantilever beam modules 3 are respectively arranged on both sides of the reinforcement connection module 4. Specifically, the reinforcement connection module 4 is arranged across the two vehicle beams 13 and connected to the upper ends of the two vehicle beams 13. The two cantilever beam modules 3 are connected to the two ends of the reinforcement connection module 4 in the width direction of the electric vehicle to ensure the relative position accuracy of the two cantilever beam modules 3 and improve the success rate of battery replacement. Among them, the reinforcement connection module 4 and the vehicle beam 13 are connected by a detachable connection method such as bolt connection.

[0148] Among them, Figure 6As shown, the number of the reinforcement connection structures 41 in the reinforcement connection module 4 of this embodiment is two, and the two reinforcement connection structures 41 are respectively connected to the cantilever beam modules 3 on the corresponding side. Each cantilever beam module 3 is connected to the side of the vehicle beam 13 through the reinforcement connection structure 41 on the corresponding side, that is, the two cantilever beam modules 3 are respectively connected to the vehicle beam 13 on the corresponding side through the support portion 411 and the reinforcement portion 412 stacked on the corresponding side, and are located on the side of the two vehicle beams 13 that are away from each other in the width direction of the electric vehicle.

[0149] In other alternative embodiments, the two cantilever beam modules 3 may also be connected to one vehicle beam 13 at the same time. In this state, the two cantilever beam modules 3 are connected to both sides of the vehicle beam 13 through the support parts 411 and the reinforcement parts 412 stacked on the corresponding sides.

[0150] Furthermore, if Figure 6 As shown, the reinforcement connection module 4 also includes a center beam 42, and two cantilever beam modules 3 are respectively arranged on both sides of the center beam 42 in the width direction of the electric vehicle, and the two ends of the center beam 42 in the width direction of the electric vehicle are respectively connected to the cantilever beam modules 3 on the corresponding sides.

[0151] Specifically, the center beam 42 is disposed between the two reinforcement connection structures 41. The center beam 42 is located between the second bending portion 4122 and the third bending portion 4123 of the reinforcement portion 412 in the height direction of the electric vehicle. Both ends of the center beam 42 in the width direction of the electric vehicle are respectively connected to the reinforcement portions 412 on the corresponding sides, and then connected to the cantilever beam module 3 through the reinforcement connection structure 41. The center beam 42 is used to connect the two reinforcement connection structures 41 and the two cantilever beam modules 3 into a whole, ensure the relative position accuracy of the two reinforcement connection structures 41 and the two cantilever beam modules 3, and improve the success rate of battery replacement.

[0152] Since the center beam 42 is located between the second bending portion 4122 and the third bending portion 4123 of the reinforcement portion 412 in the height direction of the electric vehicle, that is, the center beam 42 is arranged above the vehicle beam 13 through the reinforcement portion 412, the position of the center beam 42 is raised relative to the vehicle beam 13, and the center beam 42 occupies the space between the two vehicle beams 13, so that other structures of the electric vehicle can be arranged in the area between the two vehicle beams 13 without interfering with the quick-change bracket.

[0153] In other alternative embodiments, the reinforcement connection module 4 may not be designed with the central beam 42 , that is, the two reinforcement connection structures 41 are relatively independently arranged, and the two cantilever beam modules 3 are relatively independently arranged.

[0154] like Figure 7As shown, the quick-change bracket 11 also includes a second reinforcement member 53 and a second fastener 54. The second reinforcement member 53 is connected to the center beam 42 and the reinforcement portion 412 in the reinforcement connection structure 41, respectively. The second reinforcement member 53 is used to reinforce the connection between the reinforcement connection structure 41 and the center beam 42, enhance the connection strength between the reinforcement portion 412 and the center beam 42, and improve the structural strength. The support portion 411, the reinforcement portion 412 and the second reinforcement member 53 are connected by the second fastener 54. In this embodiment, the interconnection between multiple structures is realized by the same second fastener 54, which can reduce the number of fasteners and connection holes on each structure, making the structure more compact.

[0155] In other alternative embodiments, the connection between the reinforcement member and the reinforcement portion 412 and the connection between the reinforcement portion 412 and the center beam 42 may be performed using different fasteners.

[0156] In other alternative embodiments, if the strength is sufficient, the second reinforcement member 53 may not be provided.

[0157] like Figure 2 and Figure 3 As shown, the cantilever beam in this embodiment includes a front cantilever beam 22 and a rear cantilever beam 23, both of which extend in the width direction of the electric vehicle and are arranged on the vehicle beam 13 at intervals in the length direction of the electric vehicle. The front cantilever beam 22 and the rear cantilever beam 23 span the two vehicle beams 13 in the width direction of the electric vehicle. The battery pack 12 is arranged between the front cantilever beam 22 and the rear cantilever beam 23 and is located below the two vehicle beams 13. The two ends of the battery pack 12 in the length direction of the electric vehicle are respectively connected to the front cantilever beam 22 and the rear cantilever beam 23, so as to ensure the stability of the battery pack 12 after installation and improve the locking effect of the quick-change bracket 11 on the battery pack 12.

[0158] In other alternative embodiments, if the cantilever beam extends along the length direction of the electric vehicle, in this state, the front cantilever beam 22 and the rear cantilever beam 23 are spaced apart in the width direction of the electric vehicle and neither crosses the vehicle beam 13 .

[0159] In other alternative embodiments, the quick-change bracket 11 may include only the front cantilever beam 22 or only the rear cantilever beam 23 . In this state, the battery pack 12 is only connected to the front cantilever beam 22 or only to the rear cantilever beam 23 .

[0160] The specific structure of the front cantilever beam 22 is substantially the same as that of the cantilever beam in the above embodiment. Figure 4-Figure 6As shown, the reinforcement connection module 4 of the front cantilever beam 22 also includes a third avoidance portion 421, which is formed by being recessed upward from one end surface of the reinforcement connection module 4 toward the vehicle beam 13 in the height direction of the electric vehicle to avoid other structures on the electric vehicle, prevent the front cantilever beam 22 from interfering with other structures on the electric vehicle, and ensure the normal installation of the quick-change bracket 11.

[0161] Specifically, since the center beam 42 spans across the two beams 13 of the electric vehicle, and other structural members may be installed before the two beams 13 of some electric vehicles, in this embodiment, Figure 4 and Figure 5 As shown, the third avoidance portion 421 is arranged on the center beam 42 of the front cantilever beam 22, and is located at one end of the center beam 42 of the front cantilever beam 22 facing the vehicle beam 13 in the height direction of the electric vehicle, so as to effectively prevent the front cantilever beam 22 from interfering with other structures on the electric vehicle and ensure the normal installation of the quick-change bracket 11.

[0162] like Fig.14 and Fig.15 As shown, the specific structure of the rear cantilever beam 23 is partially different from the specific structure of the above-mentioned middle cantilever beam, that is, the specific structure of the rear cantilever beam 23 is partially different from the specific structure of the front cantilever beam 22.

[0163] Specifically, Fig.14 As shown, the rear cantilever beam 23 also includes two cantilever beam modules 3, and the two cantilever beam modules 3 are symmetrically arranged relative to the vehicle beam 13. The two cantilever beam modules 3 are respectively arranged on both sides of the vehicle beam 13 and are respectively connected to the vehicle beam 13. Specifically, the two cantilever beam modules 3 are respectively arranged on the sides of the two vehicle beams 13 that are away from each other in the width direction of the electric vehicle, and are connected to the vehicle beams 13 on the corresponding sides, and the two cantilever beam modules 3 are symmetrically arranged about the middle position of the two vehicle beams 13.

[0164] Among them, the specific structure of the cantilever beam module 3 of the rear cantilever beam 23 is basically the same as the specific structure of the cantilever beam module 3 in the above-mentioned cantilever beam, and the difference is that the cantilever beam module 3 of the rear cantilever beam 23 is not provided with the avoidance member 32 in the above-mentioned cantilever beam.

[0165] Furthermore, if Fig.16 As shown, the lower end of the cantilever beam module 3 of the rear cantilever beam 23 is flush with the lower end of the cantilever beam module 3 of the front cantilever beam 22 to ensure that after the battery pack 12 is fixed to the electric vehicle through the cantilever beam module 3, the battery pack 12 can remain in a horizontal state to ensure that the battery pack can stably supply power to the electric vehicle.

[0166] like Fig.14 and Fig.15As shown, the rear cantilever beam 23 also includes a reinforcement connection module 4, which is arranged across the vehicle beam 13. The two cantilever beam modules 3 of the rear cantilever beam 23 are respectively arranged on both sides of the reinforcement connection module 4. Specifically, the reinforcement connection module 4 spans over the two vehicle beams 13 and is connected to the upper ends of the two vehicle beams 13. The two cantilever beam modules 3 are connected to the two ends of the reinforcement connection module 4 in the width direction of the electric vehicle to ensure the relative position accuracy of the two cantilever beam modules 3 and improve the success rate of battery replacement. Among them, the reinforcement connection module 4 and the vehicle beam 13 are connected by a detachable connection method such as bolt connection.

[0167] like Fig.14 and Fig.15 As shown, the reinforcement connection module 4 of the rear cantilever beam 23 also includes two reinforcement connection structures 41, and the two reinforcement connection structures 41 are respectively connected to the cantilever beam modules 3 on the corresponding sides of the rear cantilever beam 23. Each cantilever beam module 3 is connected to the side of the vehicle beam 13 through the reinforcement connection structure 41 on the corresponding side, that is, the two cantilever beam modules 3 are respectively connected to the vehicle beam 13 on the corresponding side through the support portion 411 and the reinforcement portion 412 stacked on the corresponding side, and are located on the side of the two vehicle beams 13 that are away from each other in the width direction of the electric vehicle.

[0168] like Figure 2 , Fig.14 and Fig.15 As shown, the reinforcement connection structure 41 of the rear cantilever beam 23 also includes a support portion 411 and a reinforcement portion 412 stacked in the width direction of the electric vehicle, the support portion 411 is fixed to the side of the beam 13 in the width direction of the electric vehicle, and the reinforcement portion 412 is fixed to the upper end surface of the beam 13 in the height direction of the electric vehicle. The reinforcement portion 412 includes a reinforcement portion body 4121, a second bending portion 4122 and a third bending portion 4123. The upper end of the reinforcement portion body 4121 is bent in a direction away from the support portion 411 to form the second bending portion 4122. The lower end of the reinforcement body 4121 extends downward along the height direction of the electric vehicle and bends in a direction away from the support part 411 to form a third bent portion 4123, and the third bent portion 4123 abuts against the upper end surface of the vehicle beam 13 to achieve the connection between the reinforcement body 4121 and the vehicle beam 13, so that the vehicle beam 13 can provide support for the reinforcement 412, thereby improving the connection effect between the quick-change bracket 11 and the vehicle beam 13. Among them, the reinforcement body 4121 refers to the side of the reinforcement 412, the second bent portion 4122 refers to the upper part of the reinforcement 412, and the third bent portion 4123 refers to the lower part of the reinforcement 412.

[0169] Among them, the specific structure of the reinforced connection structure 41 of the rear cantilever beam 23 is basically the same as the specific structure of the reinforced connection structure 41 of the cantilever beam in the above-mentioned embodiment, and the difference is that the support portion 411 in the reinforced connection structure 41 of the rear cantilever beam 23 is a flat plate structure, which does not include the first bent portion 4112 in the support portion 411 of the above-mentioned cantilever beam, and the support portion 411 is connected to the reinforcement portion 412 in the reinforced connection structure 41 of the rear cantilever beam 23 only through the side surface in the width direction of the electric vehicle, that is, the second bent portion 4122 of the reinforced portion 412 of the rear cantilever beam 23 is no longer covered by the first bent portion 4112 of the support portion 411.

[0170] Furthermore, if Fig.14 and Fig.15 As shown, a fourth avoidance portion 4114 is provided on the support portion 411 of the rear cantilever beam 23, and the fourth avoidance portion 4114 is connected at both ends in the width direction of the electric vehicle to avoid other components on the electric vehicle. The fourth avoidance portion 4114 in this embodiment is formed by being recessed from one end surface of the support portion 411 of the rear cantilever beam 23 away from the front cantilever beam 22 in the length direction of the electric vehicle toward the front cantilever beam 22. In other alternative embodiments, the specific position of the fourth avoidance portion 4114 can be designed according to the actual situation, and the fourth avoidance portion 4114 can also be omitted when there is no need to avoid.

[0171] like Fig.14 and Fig.15 As shown, the reinforcement connection module 4 of the rear cantilever beam 23 also includes a center beam 42. The center beam 42 of the rear cantilever beam 23 is disposed between the two reinforcement connection structures 41 of the rear cantilever beam 23. The center beam 42 is located between the second bending portion 4122 and the third bending portion 4123 of the reinforcement portion 412 in the height direction of the electric vehicle. The two ends of the center beam 42 in the width direction of the electric vehicle are respectively connected to the reinforcement portion 412 on the corresponding side, and then connected to the cantilever beam module 3 through the reinforcement connection structure 41. The center beam 42 is used to connect the two reinforcement connection structures 41 and the two cantilever beam modules 3 into a whole, ensure the relative position accuracy of the two reinforcement connection structures 41 and the two cantilever beam modules 3, and improve the success rate of battery replacement.

[0172] The reinforcement connection module 4 of the rear cantilever beam 23 is not designed with the third avoidance portion 421 .

[0173] Furthermore, the other structures of the electric vehicle that the front cantilever beam 22 and the rear cantilever beam 23 need to avoid are different. Fig.16As shown, in this embodiment, the height of the reinforced connection module 4 of the front cantilever beam 22 in the height direction of the electric vehicle is greater than the height of the reinforced connection module 4 of the rear cantilever beam 23 in the height direction of the electric vehicle. Specifically, the height of the reinforcement portion 412 of the front cantilever beam 22 in the height direction of the electric vehicle is greater than the height of the reinforcement portion 412 of the rear cantilever beam 23 in the height direction of the electric vehicle, thereby making the height of the center beam 42 of the front cantilever beam 22 in the height direction of the electric vehicle greater than the height of the center beam 42 of the rear cantilever beam 23 in the height direction of the electric vehicle. In this embodiment, by increasing the height of the reinforcement connection module 4 of the front cantilever beam 22, on the one hand, it is ensured that the upper area of ​​the reinforcement portion 412 of the front cantilever beam 22 has enough space to connect with the center beam 42, and the height of the front cantilever beam 22 can be raised, so that there is enough space between the center beam 42 and the two vehicle beams 13 at the front end of the electric vehicle to accommodate other structural members arranged on the two vehicle beams 13. On the other hand, it is also possible to ensure the strength of the reinforcement connection module 4 of the front cantilever beam 22, so that when the reinforcement connection module 4 of the front cantilever beam 22 is provided with the third avoidance portion 421, the strength of the reinforcement connection module 4 of the front cantilever beam 22 will not become very small, thereby ensuring the strength of the front cantilever beam 22. Since the reinforcement connection module 4 of the rear cantilever beam 23 is not provided with the third avoidance portion 421, it is not necessary to design the height of the reinforcement connection module 4 of the rear cantilever beam 23 in the height direction of the electric vehicle to be a larger value to meet the strength requirement.

[0174] Furthermore, since the height of the reinforcement connection module 4 of the front cantilever beam 22 in the height direction of the electric vehicle is greater than the height of the reinforcement connection module 4 of the rear cantilever beam 23 in the height direction of the electric vehicle, the side area of ​​the reinforcement connection module 4 of the front cantilever beam 22 in the width direction of the electric vehicle is increased, thereby increasing the area that can be used to connect with the cantilever beam module 3. Fig.16 As shown, the height of the cantilever beam module 3 of the front cantilever beam 22 in the height direction of the electric vehicle is greater than the height of the cantilever beam module 3 of the rear cantilever beam 23 in the height direction of the electric vehicle, so that the connection area between the cantilever beam module 3 of the front cantilever beam 22 and the reinforced connection module 4 of the front cantilever beam 22 is increased, thereby increasing the connection strength between the two. In other alternative embodiments, the specific structure of the rear cantilever beam 23 can also be completely the same as the specific structure of the cantilever beam in the above embodiment.

[0175] In other alternative embodiments, the height of the reinforced connection module 4 of the rear cantilever beam 23 in the height direction of the electric vehicle may be greater than the height of the reinforced connection module 4 of the front cantilever beam 22 in the height direction of the electric vehicle, so that the height of the rear cantilever beam 23 can be greater to avoid more other structures of the electric vehicle.

[0176] Furthermore, if Figure 2and Figure 3 As shown, the cantilever beam in this embodiment also includes a fixed beam 21, which is connected to the cantilever beam to connect the quick-change bracket 11 into a whole. Specifically, the fixed beam 21 is located between the front cantilever beam 22 and the rear cantilever beam 23 in the length direction of the electric vehicle and is located above the battery pack 12. The two ends of the fixed beam 21 in the length direction of the electric vehicle are respectively connected to the front cantilever beam 22 and the rear cantilever beam 23, so that the quick-change bracket 11 is connected into a whole, ensuring the relative position accuracy of each part in the quick-change bracket 11 and improving the success rate of battery replacement.

[0177] In other alternative embodiments, if the cantilever beam extends along the length direction of the electric vehicle, the front cantilever beam 22 and the rear cantilever beam 23 are spaced apart in the width direction of the electric vehicle. In this state, the fixed beam 21 is located between the front cantilever beam 22 and the rear cantilever beam 23 in the width direction of the electric vehicle, and the two ends of the fixed beam 21 in the width direction of the electric vehicle are respectively connected to the front cantilever beam 22 and the rear cantilever beam 23.

[0178] In other alternative embodiments, the quick-change bracket 11 may not include the fixed beam 21 , that is, the front cantilever beam 22 and the rear cantilever beam 23 are relatively independently arranged.

[0179] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships of the device or component during normal use, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0180] 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 quick-change bracket, used for mounting on a beam of an electric vehicle to fix a battery pack, characterized in that: The quick-change bracket includes a cantilever beam module and a reinforcement connection module, wherein: The cantilever beam module is arranged on the side of the vehicle beam, the reinforcement connection module is arranged on the upper part of the vehicle beam, and the cantilever beam module is connected to the reinforcement connection module.

2. The quick-change bracket according to claim 1, characterized in that: The reinforcement connection module comprises a reinforcement connection structure, and the cantilever beam module is connected to the side of the vehicle beam through the reinforcement connection structure.

3. The quick-change bracket according to claim 2, characterized in that: The quick-change bracket meets one or more of the following conditions: a1. The reinforced connection structure is a stacked structure; b1. An angle is formed between the extension direction of the reinforcement connection structure and the extension direction of the cantilever beam module.

4. The quick-change bracket according to claim 3, characterized in that: The quick-change bracket meets one or more of the following conditions: a2. Along the width direction of the electric vehicle, two ends of the reinforced connection structure are respectively connected to the vehicle beam and the cantilever beam module; b2. When an extension direction of the reinforcement connection structure and an extension direction of the cantilever beam module form an included angle, the reinforcement connection structure extends along the length direction of the electric vehicle, and the cantilever beam module extends along the width direction of the electric vehicle.

5. The quick-change bracket according to claim 3, characterized in that: When the reinforcement connection structure is a stacked structure, the reinforcement connection structure includes a support portion and a reinforcement portion that are stacked; The cantilever beam module is connected to at least one side of the vehicle beam through the stacked supporting portion and the reinforcing portion.

6. The quick-change bracket according to claim 5, characterized in that: The quick-change bracket meets one or more of the following conditions: a3. Both the supporting portion and the reinforcing portion extend along the length direction of the electric vehicle; b3, the support portion and the reinforcement portion are stacked along the width direction of the electric vehicle; c3, the upper part of the support part is closely connected to the upper part of the reinforcement part; d3. The side of the reinforcing part extends downward along the height direction of the electric vehicle and is connected to the upper end surface of the vehicle beam; the side of the supporting part extends downward along the height direction of the electric vehicle and is successively connected to the side of the reinforcing part and the side surface of the vehicle beam.

7. The quick-change bracket according to claim 6, characterized in that: The quick-change bracket meets one or more of the following conditions: a4. When the upper part of the support part is closely connected to the upper part of the reinforcing part, the support part comprises a support part body and a first bending part, and the upper end of the support part body is bent toward the direction of the reinforcing part to form the first bending part; The reinforcing portion comprises a reinforcing portion body and a second bending portion, wherein the upper end of the reinforcing portion body is bent in a direction away from the supporting portion to form the second bending portion; The first bending portion covers the second bending portion and is connected to the second bending portion; b4, when the side portion of the reinforcement portion extends downward along the height direction of the electric vehicle and is connected to the upper end surface of the vehicle beam; The reinforcement portion includes a reinforcement portion body and a third bent portion. The lower end of the reinforcement portion body is bent in a direction away from the support portion to form the third bent portion. The third bent portion is used to abut against the upper end surface of the vehicle beam.

8. The quick-change bracket according to claim 6, characterized in that: The cantilever beam module includes a locking beam connected to the side of the vehicle beam, and the locking beam is used to connect with the battery pack; When the support portion and the reinforcement portion are stacked in the width direction of the electric vehicle, the reinforcement portion and the locking beam are respectively connected to both end surfaces of the support portion in the width direction of the electric vehicle; Along the width direction of the electric vehicle, the locking beam is connected to the side of the vehicle beam through the supporting portion and the reinforcing portion.

9. The quick-change bracket according to claim 8, characterized in that: The quick-change bracket meets one or more of the following conditions: a5. The cantilever beam module further includes a connecting member, through which the locking beam is connected to the reinforcing connection structure; the connecting member is fixed to an end surface of the support portion in the width direction of the electric vehicle; the locking beam is sleeved on the connecting member and connected to the reinforcing connection structure; b5. The cantilever beam module further includes a first reinforcement member, which is disposed outside the locking beam and is respectively connected to the locking beam and the support portion in the reinforcement connection structure, and is used to reinforce the connection between the reinforcement connection structure and the locking beam; c5. The cantilever beam module also includes an avoidance member, which is connected to the support portion; along the width direction of the electric vehicle, the avoidance member protrudes from one end of the support portion away from the locking beam toward the locking beam, and a hollow avoidance space is formed at one end of the avoidance member away from the locking beam.

10. The quick-change bracket according to claim 9, characterized in that: The locking beam extends along the width direction of the electric vehicle; When the cantilever beam module includes the connecting member, the connecting member includes a top plate, a bottom plate, a first side plate and a second side plate, the top plate and the bottom plate are spaced apart along the height direction of the electric vehicle, the first side plate and the second side plate are spaced apart along the length direction of the electric vehicle, and the first side plate and the second side plate are respectively connected to the top plate and the bottom plate at both ends in the height direction of the electric vehicle.

11. The quick-change bracket according to claim 10, characterized in that: The quick-change bracket meets one or more of the following conditions: a6. The top plate comprises a top plate body and a first protruding portion, wherein one end of the top plate body facing the support portion protrudes outwardly along the width direction of the electric vehicle to form the first protruding portion, and one end of the support portion facing the locking beam is recessed inwardly to form a first recessed portion, and the first protruding portion is accommodated in the first recessed portion; b6. The bottom plate comprises a bottom plate body and a second protruding portion, wherein one end of the bottom plate body toward the support portion protrudes outwardly along the width direction of the electric vehicle to form the second protruding portion, and one end of the support portion toward the locking beam is recessed inwardly to form a second recessed portion, and the second protruding portion is accommodated in the second recessed portion; c6. The first side panel is an integral structure; or, the first side panel includes a plurality of side panel units spaced apart along the height direction of the electric vehicle; d6. The second side panel is an integral structure; or, the second side panel includes a plurality of side panel units spaced apart along the height direction of the electric vehicle.

12. The quick-change bracket according to claim 10, characterized in that: When the cantilever beam module includes a connecting member and a first reinforcement member, the cantilever beam module further includes a first fastener, and the first reinforcement member, the locking beam, the first side plate and the second side plate are connected by the first fastener; And / or, when the cantilever beam module includes the avoidance member, the quick-change bracket satisfies one or more of the following conditions: a7. A first avoidance portion is provided at one end of the first side plate facing the support portion, and the first avoidance portion abuts against the avoidance member; b7. A second avoidance portion is provided at one end of the second side plate facing the support portion, and the second avoidance portion abuts against the avoidance member.

13. The quick-change bracket according to claim 8, characterized in that: The quick-change bracket includes a cantilever beam spanning the vehicle beam along the width direction of the electric vehicle, and the cantilever beam includes two cantilever beam modules symmetrically arranged relative to the vehicle beam.

14. The quick-change bracket according to claim 13, characterized in that: The quick-change bracket meets one or more of the following conditions: a8. The reinforcement connection module further includes a center beam, and two cantilever beam modules are respectively arranged on both sides of the center beam in the width direction of the electric vehicle, and both ends of the center beam in the width direction of the electric vehicle are respectively connected to the cantilever beam modules on the corresponding sides; b8. Each of the cantilever beam modules is connected to the side of the vehicle beam through the reinforced connection structure on the corresponding side; c8. Each of the cantilever beam modules has a locking beam, and the locking beam is connected to the supporting portion in the reinforced connection structure on the corresponding side.

15. The quick-change bracket according to claim 14, characterized in that: When the reinforced connection module includes the center beam, the quick-change bracket also includes a second reinforcement member, which is respectively connected to the center beam and the reinforcement part in the reinforced connection structure, and the second reinforcement member is used to reinforce the connection between the reinforced connection structure and the center beam.

16. The quick-change bracket according to claim 15, characterized in that: The quick-change bracket meets one or more of the following conditions: a9. The quick-change bracket further includes a second fastener, and the support portion, the reinforcement portion and the second reinforcement are connected by the second fastener; b9. The reinforcing portion is arranged at one end of the supporting portion close to another cantilever beam module.

17. The quick-change bracket according to claim 13, characterized in that: The cantilever beam comprises a front cantilever beam and a rear cantilever beam, the front cantilever beam and the rear cantilever beam are arranged on the vehicle beam at intervals along the length direction of the electric vehicle, and the battery pack is used to be arranged between the front cantilever beam and the rear cantilever beam.

18. An electric vehicle, characterized in that: The electric vehicle comprises a vehicle beam, a battery pack and a quick-change bracket as described in any one of claims 1 to 17, wherein the quick-change bracket is connected to the vehicle beam, and the battery pack is locked to the quick-change bracket.

19. The electric vehicle according to claim 18, characterized in that: The electric vehicle meets one or more of the following conditions: a10. A cantilever beam module is respectively provided on both sides of the vehicle beam, and a reinforcement connection module is provided on the vehicle beam; two cantilever beam modules are respectively provided on both sides of the reinforcement connection module, and the two cantilever beam modules are respectively connected to the vehicle beam; b10. There are two vehicle beams, which are spaced apart along the width direction of the electric vehicle, and the cantilever beam module is connected to the outer side of one of the vehicle beams along the width direction of the electric vehicle.

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