Quick-change support assembly with high locking stability and electric vehicle comprising same

Abstract

The application discloses a quick-change support assembly with high locking stability and an electric vehicle comprising the same. The quick-change support assembly comprises a vehicle body support and a lock base. The vehicle body support is fixed to the electric vehicle. The lock base is arranged below the vehicle body support. An opening and a slide channel extending from the opening are arranged below the lock base. The opening is used for the lock shaft on the battery box to enter or exit the slide channel. The opening and the slide channel both penetrate the lock base along the axis direction of the lock shaft. The lock base is fixed to the electric vehicle through the vehicle body support. The opening of the lock base is arranged below. The battery box enters the slide channel through the opening below. Therefore, the battery box is locked in the slide channel. The battery box is prevented from entering the slide channel from the side of the lock base. The lock shaft is prevented from sliding out from the side of the lock base. The safety of the locking of the battery box is improved.

Description

[0001] This application is a divisional application of the Chinese patent application No. 202111668034.4, filed on December 31, 2021, entitled "Quick-change support assembly with high locking stability and electric vehicle comprising the same".

[0002] This application claims priority to the Chinese patent application No. CN2021116067637, filed on December 26, 2021, to the Chinese patent application No. CN2021116067815, filed on December 26, 2021, and to the Chinese patent application No. CN2021114443838, filed on November 30, 2021. This application incorporates the entirety of the above-mentioned Chinese patent applications. TECHNICAL FIELD

[0003] The present application relates to the field of electric vehicles, in particular to a quick-change support assembly with high locking stability and an electric vehicle comprising the same. BACKGROUND

[0004] The existing battery box setting mode of electric vehicles is generally divided into fixed type and replaceable type. The fixed type battery is generally fixed on the vehicle, and the vehicle is directly used as the charging object during charging. The replaceable type battery box is generally fixed on the bracket of the vehicle by a movable installation mode. The battery box can be removed for separate replacement or charging operation. After the replaced battery box is charged, it is reinstalled on the vehicle.

[0005] For electric trucks, especially electric heavy trucks, the battery box of the electric truck is usually replaceable. The side of the battery box has a lock shaft, and the electric truck is provided with a lock base. The lock shaft can be inserted into the lock slot on the lock base from the side of the lock base. The lock shaft is in a cantilever beam state, and the stress conditions of the lock shaft and the lock base are poor. The weight of the battery pack of the electric truck is large, so that the lock shaft is easy to slide out of the lock base, and even the lock shaft may slide off from the side of the lock base. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the above-mentioned defects in the prior art that the battery box of the electric vehicle is locked in the lock base by the lock shaft in a cantilever beam state, and the stress condition is poor. The present application provides a quick-change support assembly with high locking stability and an electric vehicle comprising the same.

[0007] The present application solves the above-mentioned technical problems by the following technical solutions:

[0008] The application discloses a quick-change support assembly with high locking stability, which is used for locking a battery box to an electric vehicle and comprises a vehicle body support and a lock base. The vehicle body support is fixed to the electric vehicle. The lock base is arranged below the vehicle body support. An opening and a slide channel extending from the opening are arranged below the lock base. The opening is used for the lock shaft on the battery box to enter or exit the slide channel.

[0009] The vehicle body support comprises a longitudinal beam extending along the length direction of the electric vehicle. The longitudinal beam is fixed to the vehicle beam of the electric vehicle. The lock base is arranged at the bottom of the longitudinal beam. The longitudinal beam comprises a top plate, a side plate and a bottom plate connected in sequence. The bottom plate is provided with an insertion groove. The lock base is inserted into the insertion groove from top to bottom. The lock base comprises a base body and a mounting edge extending outward from the periphery of the base body. The lower side of the base body is provided with the opening and the slide channel. The base body is inserted into the insertion groove. The mounting edge is clamped to the bottom plate.

[0010] In the application, the lock base is fixed to the electric vehicle through the vehicle body support. The opening of the lock base is arranged below. The battery box enters the slide channel through the opening below, so that the battery box is locked in the slide channel. The battery box is prevented from entering the slide channel from the side of the lock base. The lock shaft is prevented from sliding out from one side of the lock base. The safety of the locking of the battery box is improved. The vehicle body support comprises the longitudinal beam. The structure is simple and is convenient for adapting to the structure of the electric vehicle. The lock base is inserted into the insertion groove from top to bottom. The installation is convenient. The base body is inserted into the insertion groove. The battery box is locked to the lock base from bottom to top. The mounting edge is clamped to the bottom plate. The connection mode of the lock base and the longitudinal beam is simplified. The stability of the connection is improved. The lock base is prevented from falling from the longitudinal beam.

[0011] Preferably, the opening and the slide channel both penetrate the lock base along the axis direction of the lock shaft. The two ends of the lock shaft are exposed to the slide channel. The two ends of the lock shaft are connected to the battery box.

[0012] In the application, the two ends of the lock shaft are connected to the battery box. The middle part of the lock shaft is clamped in the slide channel. The two ends of the lock shaft bear the force of the battery box. The uniformity of the force of the lock shaft is improved. The lock shaft is prevented from sliding out from one side of the lock base. The safety of the locking of the battery box is improved.

[0013] Preferably, the side plate is fixedly connected to the vehicle beam. The top plate and the bottom plate extend outward from the two sides of the side plate along the axis direction of the lock shaft respectively. The lock base is arranged at the bottom plate.

[0014] In the application, the longitudinal beam comprises the top plate, the side plate and the bottom plate connected in sequence. The structure is simple and has high stability.

[0015] Preferably, the longitudinal beam further comprises a flange plate extending upward from the bottom plate edge, a top surface of the flange plate being spaced apart from the top plate, the flange plate and the side plate forming a containing space, and the lock base being arranged in the containing space through the spacing.

[0016] In this scheme, the flange plate further improves the strength of the longitudinal beam, and the containing space can provide a relatively stable installation and use environment for the lock base, reducing the entry of foreign matter.

[0017] Preferably, the top plate, the side plate, the bottom plate and the flange plate are an integral structure.

[0018] Alternatively, the top plate, the side plate, the bottom plate and the flange plate are sequentially spliced.

[0019] In this scheme, the longitudinal beam with an integral structure has high strength and is easy to manufacture. The longitudinal beam with sequential splicing has a simple structure.

[0020] Preferably, the quick-change support assembly further comprises a plurality of reinforcing rib plates, the reinforcing rib plates being clamped between the top plate and the bottom plate, and the side edges of the reinforcing rib plates being connected to the side plate.

[0021] In this scheme, the reinforcing rib plates can further improve the strength of the longitudinal beam.

[0022] Preferably, an installation protrusion is arranged on the side wall of the longitudinal beam, and the lock base is arranged at the bottom of the installation protrusion.

[0023] In this scheme, the lock base is arranged on the installation protrusion, which has a simple structure. Preferably, the installation protrusion is formed by extending outward from the side wall of the longitudinal beam, which can fully utilize the installation space on the outer side of the vehicle beam.

[0024] Preferably, the quick-change support assembly further comprises a vertical column and a horizontal beam, the longitudinal beam being connected to the horizontal beam through the vertical column, and the longitudinal beam, the vertical column and the horizontal beam being sequentially connected to form a rectangular frame.

[0025] In this scheme, the quick-change support assembly in the form of a rectangular frame has a simple structure and is easy to adapt to electric vehicles.

[0026] Preferably, the bottom surface of the longitudinal beam is higher than the top surface of the horizontal beam.

[0027] In this scheme, the battery box can be accommodated, the height of the battery box can be increased, and interference between the battery box and other parts of the electric vehicle can be avoided. The horizontal beam can also be prevented from interfering with the vehicle beam.

[0028] Preferably, a weight-reducing hole is formed in each of the longitudinal beam and the horizontal beam.

[0029] In the scheme, the weight reduction hole facilitates reducing the weight of the longitudinal beam and the cross beam, and helps to improve the endurance of the electric vehicle.

[0030] Preferably, a reinforcing member is arranged between the longitudinal beam and the column.

[0031] In the scheme, the reinforcing member can improve the strength and stability between the longitudinal beam and the column.

[0032] Preferably, the quick-change support assembly further comprises an electrical connector arranged at the middle portion of the cross beam.

[0033] In the scheme, the electrical connection between the battery box and the electric vehicle is facilitated.

[0034] Preferably, the lower end of the lock base is provided with a guide portion, and the cross section of the guide portion along the direction in which the lock shaft enters the opening is enlarged.

[0035] In the scheme, the guide portion facilitates the positioning of the lock shaft of the battery box and the lock base, and facilitates the entering of the opening and the slide.

[0036] Preferably, the top portion of the lock base is provided with a receiving groove, and the receiving groove is in communication with the slide, and the quick-change support assembly further comprises:

[0037] a lock tongue, which is pivotally arranged on the lock base, and which can swing in the receiving groove and the slide to communicate or block the slide;

[0038] a lock connecting rod, which acts on the lock tongue, and which is used to drive the lock tongue to swing.

[0039] In the scheme, the lock tongue is arranged in the receiving groove, and the structure is compact and facilitates operation. The lock tongue can lock the battery box in the slide, and the lock connecting rod facilitates applying force to the lock tongue and also facilitates synchronous control of multiple lock tongues.

[0040] Preferably, the quick-change support assembly further comprises a reset member, one end of which is connected with one end portion of the lock connecting rod, and the other end of which is connected with the vehicle body support.

[0041] In the scheme, the reset member applies force to the lock tongue through the lock connecting rod, so that the lock tongue is in the locking state, which can avoid the lock tongue from being unlocked by mistake, and can improve the safety of locking the battery box.

[0042] Preferably, the quick-change support assembly further comprises a buffer portion, at least a part of which is located in the slide, and when the lock shaft is at the locking point in the slide, the buffer portion abuts against the lock shaft.

[0043] In the scheme, the kinetic energy when the partial lock shaft is converted to the locking state is absorbed by the buffer part, the impact of the lock shaft on the lock base is reduced, the noise when the lock base is locked is reduced, and the stability of the lock shaft in the locked state is improved.

[0044] An electric vehicle comprising a battery box and the quick-change bracket assembly as described above, the battery box is arranged in the quick-change bracket assembly.

[0045] In the scheme, the battery box of the electric vehicle is locked by the quick-change bracket assembly, the lock shaft of the battery box is prevented from sliding out from one side of the lock base, and the safety of the battery box locking is improved.

[0046] On the basis of conforming to the common sense of the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred examples of the present application are obtained.

[0047] The positive progress effect of the present application is that:

[0048] The lock base of the present application is fixed to the electric vehicle through the vehicle body support, the opening of the lock base is arranged below, the battery box enters the slide way through the opening below, so that the battery box is locked in the slide way, the battery box is prevented from entering the slide way from the side of the lock base, the lock shaft is prevented from sliding out from one side of the lock base, and the safety of the battery box locking is improved. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 The structure diagram of the quick-change bracket assembly of the preferred embodiment of the present application.

[0050] Figure 2 The structure diagram of the quick-change bracket assembly. Figure 1 The side view structure diagram of the quick-change bracket assembly.

[0051] Figure 3 The structure diagram of the quick-change bracket assembly. Figure 2 The structure diagram of the quick-change bracket assembly.

[0052] Figure 4 The structure diagram of the quick-change bracket assembly. Figure 1 The structure diagram of the longitudinal beam in the quick-change bracket assembly.

[0053] Figure 5 The structure diagram of the lock base in the quick-change bracket assembly. Figure 1 The structure diagram of the lock base in the quick-change bracket assembly.

[0054] Figure 6 The structure diagram of the reinforcing rib plate in the quick-change bracket assembly. Figure 1 The structure diagram of the reinforcing rib plate in the quick-change bracket assembly.

[0055] Figure 7 The structure diagram of the electric vehicle comprising the quick-change bracket assembly. Figure 1 The structure diagram of the electric vehicle comprising the quick-change bracket assembly.

[0056] MARKED DESCRIPTION:

[0057] Quick-change bracket assembly 100

[0058] Reinforcing plate 11

[0059] U-shaped plate 111

[0060] Outward turning plate 112

[0061] Column 12

[0062] Cross beam 13

[0063] Lightening hole 14

[0064] Reinforcing member 15

[0065] Electric connector 16

[0066] Vehicle body bracket 20

[0067] Longitudinal beam 21

[0068] Top plate 22

[0069] Side plate 23

[0070] Bottom plate 24

[0071] Insertion slot 25

[0072] Folded edge plate 26

[0073] Lock base 30

[0074] Opening 31

[0075] Slide 32

[0076] Base body 33

[0077] Mounting edge 34

[0078] Guide portion 35

[0079] Accommodating slot 36

[0080] Lock tongue 37

[0081] Lock connecting rod 38

[0082] Reset member 39

[0083] Buffer portion 40

[0084] Electric vehicle 500

[0085] Battery box 51

[0086] Vehicle beam 52 DETAILED DESCRIPTION

[0087] The present application will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0088] As shown in Figures 1 to 7 the present embodiment includes a quick-change support assembly 100 with high locking stability and an electric vehicle 500 including the quick-change support assembly 100, the quick-change support assembly 100 is used to lock a battery box 51 to the electric vehicle 500, and the quick-change support assembly 100 includes a vehicle body support 20 and a lock base 30, the vehicle body support 20 is fixed to the electric vehicle 500; the lock base 30 is arranged below the vehicle body support 20, and the lock base 30 is provided with an opening 31 and a slide 32 extending from the opening 31, the opening 31 is used for the lock shaft on the battery box 51 to enter and exit the slide 32, and the opening 31 and the slide 32 both penetrate the lock base 30 along the axis direction of the lock shaft. The lock base 30 is fixed to the electric vehicle 500 through the vehicle body support 20, the opening 31 of the lock base 30 is arranged below, the battery box 51 enters the slide 32 through the opening 31 below, so that the battery box 51 is locked in the slide 32, avoiding the battery box 51 entering the slide 32 from the side of the lock base 30, which can avoid the lock shaft sliding out from one side of the lock base 30, and can improve the safety of the locking of the battery box 51.

[0089] Both ends of the lock shaft are exposed to the slide 32, and both ends of the lock shaft are connected to the battery box 51. Both ends of the lock shaft are connected to the battery box 51, so that the middle part of the lock shaft is clamped in the slide 32, the two ends bear the force of the battery box 51, thereby improving the uniformity of the force of the lock shaft, avoiding the lock shaft sliding out from one side of the lock base 30, and improving the safety of the locking of the battery box 51.

[0090] As shown in Figure 1 the vehicle body support 20 includes a longitudinal beam 21, the longitudinal beam 21 extends along the length direction of the electric vehicle 500, the longitudinal beam 21 is fixed to the vehicle beam 52 of the electric vehicle 500, and the lock base 30 is arranged at the bottom of the longitudinal beam 21. The vehicle body support 20 includes the longitudinal beam 21, which is simple in structure and convenient for adapting to the structure of the electric vehicle 500. In other embodiments, the structure of the vehicle body support 20 can also be other forms.

[0091] In Figure 4 the longitudinal beam 21 includes a top plate 22, a side plate 23 and a bottom plate 24 connected in sequence, the side plate 23 is fixedly connected with the vehicle beam 52, the top plate 22 and the bottom plate 24 respectively extend outward from both sides of the side plate 23 along the axis direction of the lock shaft, and the lock base 30 is arranged at the bottom plate 24. The longitudinal beam 21 includes the top plate 22, the side plate 23 and the bottom plate 24 connected in sequence, which is simple in structure and high in stability.

[0092] The longitudinal beam 21 further comprises a flange plate 26 extending upward from the edge of the bottom plate 24, the top surface of the flange plate 26 is spaced apart from the top plate 22, and the flange plate 26 and the side plate 23 form a containing space, and the lock base 30 is arranged in the containing space through the spacing. The flange plate 26 further improves the strength of the longitudinal beam 21, and the containing space can provide a relatively stable installation and use environment for the lock base 30 and reduce the entry of foreign matter.

[0093] As an embodiment, the top plate 22, the side plate 23, the bottom plate 24 and the flange plate 26 are an integral structure. The integral structure of the longitudinal beam 21 has high strength and is convenient to manufacture. In other embodiments, the top plate 22, the side plate 23, the bottom plate 24 and the flange plate 26 can be sequentially spliced. The sequentially spliced longitudinal beam 21 has a simple structure.

[0094] The bottom plate 24 is provided with an insertion slot 25, and the lock base 30 is inserted downward from the top into the insertion slot 25. The lock base 30 is inserted downward from the top into the insertion slot 25, which is convenient for installation. In this embodiment, the insertion slot 25 is a rectangular slot, and in other embodiments, the insertion slot 25 can be specifically provided in other structural forms in combination with the shape of the lock base 30.

[0095] The lock base 30 comprises a base body 33 and a mounting edge 34 extending outward from the periphery of the base body 33, and the lower side of the base body 33 is provided with an opening 31 and a slide 32. The base body 33 is inserted into the insertion slot 25, and the mounting edge 34 is clamped to the bottom plate 24. The base body 33 is inserted into the insertion slot 25, which is convenient for the battery box 51 to be locked to the lock base 30 from the bottom to the top. The mounting edge 34 is clamped to the bottom plate 24, which can simplify the connection form of the lock base 30 and the longitudinal beam 21, improve the stability of the connection, and avoid the lock base 30 from falling off the longitudinal beam 21.

[0096] In other embodiments, the side wall of the longitudinal beam 21 is provided with a mounting protrusion, and the lock base 30 is arranged at the bottom of the mounting protrusion. The lock base 30 is arranged on the mounting protrusion, which has a simple structure, and the mounting protrusion is preferably formed by extending outward from the side wall of the longitudinal beam 21, which can fully utilize the mounting space on the outer side of the beam 52.

[0097] As shown in Figure 2 and Figure 6 The quick-change support assembly 100 further comprises a plurality of reinforcing rib plates 11 clamped between the top plate 22 and the bottom plate 24, and the side edges of the reinforcing rib plates 11 are connected with the side plate 23. The reinforcing rib plates 11 can further improve the strength of the longitudinal beam 21.

[0098] As an implementation form, the reinforcing rib plate 11 comprises a U-shaped plate 111 and two outward flaps 112 respectively extending outward from the opening of the U-shaped plate 111, and the U-shaped plate 111 and the outward flaps 112 are clamped between the top plate 22 and the bottom plate 24, and the outward flaps 112 are connected with the side plate 23. The reinforcing rib plate 11 comprises the U-shaped plate 111 and the two outward flaps 112, which has simple structure, high strength and is convenient to connect with the longitudinal beam 21. The side of the reinforcing rib plate 11 away from the side plate 23 is provided with a weight-reducing hole 14. The weight-reducing hole 14 can reduce the weight of the reinforcing rib plate 11. In other embodiments, the reinforcing rib plate 11 can also have other structural forms.

[0099] The quick-change support assembly 100 further comprises the columns 12 and the cross beams 13, the longitudinal beams 21 are connected with the cross beams 13 through the columns 12, and the longitudinal beams 21, the columns 12 and the cross beams 13 are sequentially connected to form a rectangular frame. The quick-change support assembly 100 in the form of a rectangular frame has simple structure and is convenient to adapt to the electric vehicle 500.

[0100] The bottom surface of the longitudinal beam 21 is higher than the top surface of the cross beam 13. This is convenient to accommodate the battery box 51, can improve the height of the battery box 51, and can avoid interference between the battery box 51 and other parts of the electric vehicle 500. It can also avoid interference between the cross beam 13 and the vehicle beam 52

[0101] The longitudinal beams 21 and the cross beams 13 are both provided with weight-reducing holes 14. The weight-reducing holes 14 are convenient to reduce the weight of the longitudinal beams 21 and the cross beams 13, and are beneficial to improve the endurance of the electric vehicle 500. The weight-reducing holes 14 can be circular holes, rectangular holes, etc.

[0102] The longitudinal beams 21 and the columns 12 are provided with reinforcing members 15. The reinforcing members 15 can improve the strength and stability between the longitudinal beams 21 and the columns 12.

[0103] Preferably, the quick-change support assembly 100 further comprises an electrical connector 16 arranged at the middle part of the cross beam 13. This is convenient to electrically connect the battery box 51 with the electric vehicle 500.

[0104] In the embodiment, as shown in Figure 1 The columns 12 are rectangular columns 12, and the four columns 12 are arranged at the four corners, and the two longitudinal beams 21 are oppositely arranged and clamped between the two columns 12. The two cross beams 13 are oppositely arranged. The reinforcing member 15 can be a tetrahedron structure, the side surface of the reinforcing member 15 is triangular, and the four reinforcing members 15 are arranged at the junction surface of the column 12 and the longitudinal beam 21. One surface of the triangular reinforcing member 15 is fitted with the side surface of the column 12, and the other surface of the triangular reinforcing member 15 is fitted with the top surface of the longitudinal beam 21.

[0105] As shown in Figure 5As shown, the lower end of the lock base 30 is provided with a guide portion 35, the cross section of the guide portion 35 along the direction of the lock shaft entering the opening 31 is enlarged. The guide portion 35 facilitates the positioning of the lock shaft of the battery box 51 and the lock base 30, and facilitates the entering of the opening 31 and the slide 32. Specifically, the guide portion 35 can be a guide slope.

[0106] The top of the lock base 30 is provided with a receiving groove 36, the receiving groove 36 is in communication with the slide 32, the quick-change support assembly 100 further comprises a lock tongue 37 and a lock connecting rod 38, the lock tongue 37 is pivotally arranged on the lock base 30, the lock tongue 37 can swing in the receiving groove 36 and the slide 32 to communicate or block the slide 32; the lock connecting rod 38 acts on the lock tongue 37, the lock connecting rod 38 is used to drive the lock tongue 37 to swing. The lock tongue 37 is arranged in the receiving groove 36, which has a compact structure and is convenient to operate. The lock tongue 37 can lock the battery box 51 in the slide 32, the lock connecting rod 38 facilitates the application of force to the lock tongue 37, and also facilitates the synchronous control of multiple lock tongues 37. The lock connecting rod 38 moves left or right under the action of external force, thereby driving the lock tongue 37 to pivot, and the rotated lock tongue 37 leaves the entering slide 32, thereby realizing the unlocking or locking of the lock shaft of the battery box 51.

[0107] The quick-change support assembly 100 further comprises a reset member 39, one end of the reset member 39 is connected with one end of the lock connecting rod 38, and the other end of the reset member 39 is connected with the vehicle body support 20. The reset member 39 applies force to the lock tongue 37 through the lock connecting rod 38, so that the lock tongue 37 is in a locking state, which can avoid the lock tongue 37 from being unlocked by mistake, and can improve the safety of the locking of the battery box 51. In the embodiment, the reset member 39 can be a spring, one end of the spring is arranged on the longitudinal beam 21, and the other end of the spring is connected to the end of the lock connecting rod 38, and the spring applies a pulling force to the lock connecting rod 38.

[0108] The quick-change support assembly 100 further comprises a buffer portion 40, at least a part of the buffer portion 40 is located in the slide 32, and the buffer portion 40 abuts against the lock shaft when the lock shaft is at a locking point in the slide 32. The buffer portion 40 absorbs part of the kinetic energy when the lock shaft is converted to the locking state, which can reduce the impact of the lock shaft on the lock base 30, reduce the noise when the lock base 30 is locked, and improve the stability of the lock shaft in the locking state. Specifically, the buffer portion 40 can be made of rubber, silicone or the like.

[0109] In the embodiment, the lock shaft of the battery box 51 enters the opening 31 from bottom to top, the upper side of the lock shaft can push the lock tongue 37 to pivot, the rotated lock tongue 37 leaves the slide 32, and the lock shaft can continue to enter the slide 32. When the lock shaft is about to reach the end of the slide 32, the buffer portion 40 abuts against the lock shaft. When the lock shaft reaches the locking point, the lock tongue 37 enters the slide 32 under the action of gravity and the lock connecting rod 38, and the side surface of the lock tongue 37 abuts against the lock shaft, thereby realizing the locking of the lock shaft. Figure 3As shown, the reset member 39 applies a pulling force to the locking link 38, causing the locking link 38 to move to the right. The locking link 38 then causes the locking tongue 37 to rotate clockwise, thereby ensuring that the locking tongue 37 extends into the slide rail 32 and avoiding mis-locking.

[0110] like Figure 3 As shown, under the action of external force, the locking link 38 can move to the left, and the locking link 38 drives the locking tongue 37 to rotate counterclockwise. After rotation, the locking tongue 37 leaves the slide 32, thereby unlocking the locking shaft of the battery box 51. The locking shaft of the battery box 51 can leave the slide 32 and then leave the lock base 30 from the opening 31.

[0111] By adopting the technical solution in the above embodiments, the height space below the longitudinal beam 21 is fully utilized. When the battery swapping equipment disassembles the battery box 51, the unloaded battery swapping equipment can directly enter the space below the battery box 51 without interfering with the bottom of the electric vehicle 500. When the battery swapping equipment installs the battery box 51, the battery swapping equipment carrying the battery box 51 and battery pack can also directly enter the space below the longitudinal beam 21 for battery swapping without interfering with the bottom of the electric vehicle 500. Throughout the process, there is no need to lift the vehicle body, nor is it necessary to set up a sunken space or dig a pit for the battery swapping equipment to enter and exit, thus reducing the construction cost, time and difficulty of the battery swapping station, reducing the requirements for the construction site, and improving the efficiency of battery swapping.

[0112] The quick-change bracket assembly 100 of this embodiment is particularly suitable for commercial vehicles such as heavy trucks and light trucks.

[0113] like Figure 7 As shown, this embodiment also discloses an electric vehicle 500, which includes a battery box 51 and a quick-change bracket assembly 100 as described above. The battery box 51 is disposed on the quick-change bracket assembly 100. The battery box 51 of the electric vehicle 500 is locked by the quick-change bracket assembly 100, which can prevent the locking shaft of the battery box 51 from sliding out from one side of the locking base 30, thereby improving the locking security of the battery box 51. In this embodiment, the electric vehicle 500 can be a commercial vehicle such as a heavy truck or a light truck. Figure 7 The image only shows the battery box 51, vehicle beam 52, quick-change bracket assembly 100, and wheel assembly of the electric vehicle 500; other components of the electric vehicle 500 are not shown. The quick-change bracket assembly 100 is mounted on the vehicle beam 52 along the length of the electric vehicle 500. The battery box 51 is locked in place by the quick-change bracket assembly 100.

[0114] Although the specific embodiments of the present application have been described above, it is understood by those skilled in the art that the present application is only illustrated by way of example, and the scope of protection of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the scope of protection of the present application.

Claims

1. A quick-change bracket assembly with high locking stability for locking a battery box to an electric vehicle, characterized in that, The quick-change bracket assembly includes: A vehicle body bracket, which is fixed to the electric vehicle; A lock base is provided below the vehicle body bracket. The lower part of the lock base has an opening and a slide extending from the opening. The opening is used for the lock shaft on the battery box to enter and exit the slide. The vehicle body bracket includes a longitudinal beam extending along the length of the electric vehicle and fixed to the vehicle beam. A lock base is located at the bottom of the longitudinal beam. The longitudinal beam includes a top plate, a side plate, and a bottom plate connected in sequence. The bottom plate has an insertion groove. The lock base is inserted into the insertion groove from top to bottom. The lock base includes a base body and a mounting edge. The mounting edge extends outward from all sides of the base body. The lower side of the base body has the opening and the slide. The base body is inserted into the insertion groove, and the mounting edge is engaged with the bottom plate. The opening and the slide rail both penetrate the lock base along the axial direction of the lock shaft; the quick-change bracket assembly also includes a column and a crossbeam, the longitudinal beam is connected to the crossbeam through the column, and the longitudinal beam, the column and the crossbeam are connected in sequence to form a rectangular frame; the bottom surface of the longitudinal beam is higher than the top surface of the crossbeam; the lower end of the lock base is provided with a guide part, and the cross-section of the guide part increases along the direction of the lock shaft entering the opening; Both the longitudinal beam and the transverse beam are provided with weight-reducing holes, which can be circular or rectangular.

2. The quick-change bracket assembly as described in claim 1, characterized in that, Both ends of the locking shaft protrude from the slide rail, and both ends of the locking shaft are connected to the battery box.

3. The quick-change bracket assembly as described in claim 1, characterized in that, The side plate is fixedly connected to the vehicle beam, the top plate and the bottom plate extend outward from both sides of the side plate along the axial direction of the lock shaft, and the lock base is disposed on the bottom plate; And / or, the side wall of the longitudinal beam is provided with a mounting flange, and the lock base is located at the bottom of the mounting flange.

4. The quick-change bracket assembly as described in claim 3, characterized in that, The longitudinal beam also includes a folded edge plate, which extends upward from the edge of the bottom plate. There is a gap between the top surface of the folded edge plate and the top plate. An accommodating space is formed between the folded edge plate and the side plate. The lock base is disposed in the accommodating space through the gap. Preferably, the top plate, the side plate, the bottom plate, and the folded edge plate are an integral structure; Alternatively, the top plate, the side plate, the bottom plate, and the folded edge plate are sequentially spliced ​​together.

5. The quick-change bracket assembly as described in claim 3, characterized in that, The quick-change bracket assembly also includes several reinforcing ribs, which are snapped between the top plate and the bottom plate, and the sides of the reinforcing ribs are connected to the side plates.

6. The quick-change bracket assembly as described in claim 1, characterized in that, A reinforcing member is provided between the longitudinal beam and the column of the quick-change bracket assembly; And / or; the quick-change bracket assembly also includes an electrical connector located at the center of the crossbeam.

7. The quick-change bracket assembly as described in claim 1, characterized in that, The quick-change bracket assembly also includes a buffer section, at least a portion of which is located within the slide rail. When the locking shaft is at its locking point within the slide rail, the buffer section abuts against the locking shaft.

8. The quick-change bracket assembly as described in claim 1, characterized in that, The top of the lock base has a receiving groove, which communicates with the slide rail. The quick-change bracket assembly also includes: A locking tongue, which is pivotally mounted on the lock base, is capable of swinging within the receiving groove and the slide rail to connect or block the slide rail; A locking link acts on the bolt and drives the bolt to swing.

9. The quick-change bracket assembly as described in claim 8, characterized in that, The quick-change bracket assembly further includes a reset component, one end of which is connected to one end of the locking rod, and the other end of which is connected to the vehicle body bracket.

10. An electric vehicle, characterized in that, It includes a battery compartment and a quick-change bracket assembly as described in any one of claims 1-9, wherein the battery compartment is disposed on the quick-change bracket assembly.

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