Quick-change support assembly with high locking stability and electric automobile comprising quick-change support assembly

Abstract

The invention discloses a quick-change support assembly with high locking stability and an electric automobile comprising the quick-change support assembly. The quick-change support assembly comprises an automobile body support and a lock base, and the automobile body support is fixed to the electric automobile; the lock base is arranged below the vehicle body support, an opening and a sliding way extending from the opening are formed in the lower portion of the lock base, the opening is used for allowing a lock shaft on the battery box to enter and exit from the sliding way, and the opening and the sliding way both penetrate through the lock base in the axis direction of the lock shaft. The lock base is fixed to the electric automobile through the automobile body support, the opening of the lock base is formed in the lower portion, and the battery box enters the sliding way through the lower opening, so that the battery box is locked in the sliding way, the situation that the battery box enters the sliding way from the side face of the lock base is avoided, the situation that the lock shaft slides out from one side of the lock base can be avoided, and the locking safety of the battery box can be improved.

Description

[0001] This application is a divisional of a Chinese invention patent with an application date of December 31, 2021, application number 202111668034.4, and name “Quick-change bracket assembly with high locking stability and electric vehicle comprising the same”.

[0002] This application claims the priority of Chinese patent application CN2021116067637, filed on December 26, 2021, the priority of Chinese patent application CN2021116067815, filed on December 26, 2021, and the priority of Chinese patent application CN2021114443838, filed on November 30, 2021. This application cites the full text of the above Chinese patent application. Technical Field

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

[0004] The battery box of existing electric vehicles is generally divided into fixed and replaceable types. Among them, the fixed battery is generally fixed on the vehicle, and the vehicle is directly used as the charging object during charging. The replaceable battery box is generally fixed on the bracket of the vehicle through a movable installation. The battery box can be removed to replace or charge the battery box separately. 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 electric trucks is usually replaceable. There is a lock shaft on the side of the battery box, and the electric truck is equipped 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 force of the lock shaft and the lock base is poor. The battery pack of the electric truck is heavy, which makes the lock shaft easy to slide from the lock base. In serious cases, the lock shaft may slide off the side of the lock base. Summary of the invention

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

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

[0008] A quick-change bracket assembly with high locking stability, used for locking a battery box to an electric vehicle, the quick-change bracket assembly comprising a body bracket and a lock base, the body bracket being fixed to the electric vehicle; the lock base being arranged below the body bracket, an opening and a slideway extending from the opening being arranged below the lock base, the opening being used for allowing a lock shaft on the battery box to enter and exit the slideway;

[0009] The vehicle body bracket includes a longitudinal beam, which extends along the length direction of the electric vehicle, and is fixed to the vehicle beam of the electric vehicle. The lock base is arranged at the bottom of the longitudinal beam, and the longitudinal beam includes a top plate, a side plate and a bottom plate connected in sequence, and the bottom plate is provided with an insertion groove, and the lock base is inserted into the insertion groove from top to bottom. The lock base includes a base body and a mounting edge, and the mounting edge extends outward from all sides of the base body. The lower side surface of the base body is provided with the opening and the slide, and the base body is inserted into the insertion groove, and the mounting edge is clamped on the bottom plate.

[0010] In this solution, the lock base is fixed to the electric vehicle through a body bracket, and the opening of the lock base is set at the bottom. The battery box enters the slide through the opening at the bottom, so that the battery box is locked in the slide, which prevents the battery box from entering the slide from the side of the lock base, and can prevent the lock shaft from sliding out from one side of the lock base, which can improve the safety of the battery box locking. The body bracket includes a longitudinal beam, which has a simple structure and is easy to adapt to the structure of the electric vehicle. The lock base is inserted into the insertion groove from top to bottom for easy installation. The base body is inserted into the insertion groove to facilitate the battery box to be locked to the lock base from bottom to top. The installation side card is set on the bottom plate, which can simplify the connection between the lock base and the longitudinal beam, improve the stability of the connection, and prevent the lock base from falling from the longitudinal beam.

[0011] Preferably, the opening and the slideway both penetrate the lock base along the axial direction of the lock shaft; and / or both ends of the lock shaft are exposed from the slideway, and both ends of the lock shaft are connected to the battery box.

[0012] In this solution, both ends of the lock shaft are connected to the battery box, so that the middle part of the lock shaft is stuck in the slide, and the two ends of the lock are subjected to the force of the battery box, thereby improving the uniformity of the force on the lock shaft, preventing the lock shaft from sliding out of one side of the locking base, and improving the safety of the battery box locking.

[0013] Preferably, the side plates are fixedly connected to the vehicle beams, the top plate and the bottom plate extend outwards from both sides of the side plates respectively along the axial direction of the lock shaft, and the lock base is arranged on the bottom plate.

[0014] In this solution, the longitudinal beam includes a top plate, a side plate and a bottom plate connected in sequence, and has a simple structure and high stability.

[0015] Preferably, the longitudinal beam also includes a folding plate, which extends upward from the edge of the bottom plate, and there is a gap between the top surface of the folding plate and the top plate, and a accommodating space is formed between the folding plate and the side plate, and the lock base is arranged in the accommodating space through the gap.

[0016] In this solution, the folded edge plate further improves the strength of the longitudinal beam, and the accommodating 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 folding plate are an integral structure;

[0018] Alternatively, the top plate, the side plate, the bottom plate and the folding plate are spliced ​​in sequence.

[0019] In this solution, the longitudinal beam of the overall structure has high strength and is easy to manufacture. The longitudinal beams spliced ​​in sequence have a simple structure.

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

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

[0022] Preferably, a mounting flange is provided on the side wall of the longitudinal beam, and the lock base is provided at the bottom of the mounting flange.

[0023] In this solution, the lock base is arranged on the mounting flange, which has a simple structure. Preferably, the mounting flange is formed by extending outward from the side wall of the longitudinal beam, so as to fully utilize the mounting space outside the vehicle beam.

[0024] Preferably, the quick-change bracket assembly further comprises a column and a crossbeam, the longitudinal beam is connected to the crossbeam via the column, and the longitudinal beam, the column and the crossbeam are sequentially connected to form a rectangular frame.

[0025] In this solution, the rectangular frame-shaped quick-change bracket assembly 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 transverse beam.

[0027] In this solution, it is convenient to accommodate the battery box, the height of the battery box can be increased, and the interference between the battery box and other components of the electric vehicle can be avoided. The interference between the cross beam and the vehicle beam can also be avoided.

[0028] Preferably, weight-reducing holes are provided on the longitudinal beam and the transverse beam.

[0029] In this solution, the weight-reducing holes facilitate reducing the weight of the longitudinal beam and the cross beam themselves, which is beneficial to improving the endurance of electric vehicles.

[0030] Preferably, a reinforcement member is provided between the longitudinal beam and the column.

[0031] In this solution, the reinforcement member can improve the strength and stability between the longitudinal beam and the column.

[0032] Preferably, the quick-change bracket assembly further comprises an electrical connector, and the electrical connector is disposed in the middle portion of the crossbeam.

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

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

[0035] In this solution, the guide portion facilitates the positioning of the lock shaft and the lock base of the battery box, and facilitates access to the opening and the slideway.

[0036] Preferably, the top of the lock base has a receiving groove, the receiving groove is connected to the slideway, and the quick-change bracket assembly further includes:

[0037] A lock tongue, the lock tongue being pivotally mounted on the lock base, the lock tongue being able to swing in the receiving groove and the slideway to connect or block the slideway;

[0038] A lock link, wherein the lock link acts on the lock tongue, and the lock link is used to drive the lock tongue to swing.

[0039] In this solution, the lock tongue is arranged in the receiving groove, the structure is compact and easy to operate. The lock tongue can lock the battery box in the slideway, the lock link is convenient for applying force to the lock tongue, and it is also convenient for synchronously controlling multiple lock tongues.

[0040] Preferably, the quick-change bracket assembly further comprises: a reset member, one end of which is connected to one end of the locking link, and the other end of which is connected to the vehicle body bracket.

[0041] In this solution, the reset member applies a force to the lock tongue through the lock link, so that the lock tongue is in a locked state, which can avoid the lock tongue from being mislocked and improve the security of locking the battery box.

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

[0043] In this solution, the buffer portion is used to absorb part of the kinetic energy of the lock shaft when it is converted to a locked state, which can reduce the impact of the lock shaft on the lock base, reduce the noise when the lock base is locked, and improve the stability of the lock shaft when it is in a locked state.

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

[0045] In this solution, the battery box of the electric vehicle is locked by the quick-change bracket assembly, which can prevent the locking shaft of the battery box from sliding out of one side of the locking base, and can improve the safety of locking the battery box.

[0046] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0047] The positive and progressive effects of the present invention are:

[0048] The lock base of the present invention is fixed to the electric vehicle through a body bracket, and the opening of the lock base is set at the bottom. The battery box enters the slide through the opening at the bottom, so that the battery box is locked in the slide, which prevents the battery box from entering the slide from the side of the self-locking base, and can prevent the lock shaft from sliding out of one side of the self-locking base, thereby improving the safety of battery box locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 Schematic diagram of the structure of a quick-change bracket assembly according to a preferred embodiment of the present invention.

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

[0051] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure of the quick-change bracket assembly.

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

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

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

[0055] Figure 7 To include Figure 1 Schematic diagram of the structure of an electric vehicle with a quick-change bracket assembly.

[0056] Description of reference numerals:

[0057] Quick-change bracket assembly 100

[0058] Reinforced rib plate 11

[0059] U-shaped plate 111

[0060] External flap 112

[0061] Column 12

[0062] Beam 13

[0063] Weight reduction hole 14

[0064] Reinforcement 15

[0065] Electrical connector 16

[0066] Body bracket 20

[0067] Stringer 21

[0068] Top Plate 22

[0069] Side Panel 23

[0070] Bottom plate 24

[0071] Insert slot 25

[0072] Folding plate 26

[0073] Lock base 30

[0074] Opening 31

[0075] Slide 32

[0076] Base body 33

[0077] Mounting edge 34

[0078] Guide part 35

[0079] Accommodation groove 36

[0080] Lock tongue 37

[0081] Lock link 38

[0082] Reset 39

[0083] Buffering portion 40

[0084] Electric Car 500

[0085] Battery box 51

[0086] Car beam 52 DETAILED DESCRIPTION

[0087] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

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

[0089] Both ends of the lock shaft are exposed in the slideway 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 stuck in the slideway 32, and the two ends of the lock are subjected to the force of the battery box 51, thereby improving the uniformity of the force on the lock shaft, preventing the lock shaft from sliding out of one side of the locking base 30, and improving the safety of locking the battery box 51.

[0090] like Figure 1 As shown, the body bracket 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 body bracket 20 includes the longitudinal beam 21, and has a simple structure, which is convenient for adapting to the structure of the electric vehicle 500. In other embodiments, the structural form of the body bracket 20 can also be other forms.

[0091] exist Figure 4 In the embodiment, 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 to the vehicle beam 52, the top plate 22 and the bottom plate 24 extend outwards from both sides of the side plate 23 along the axis direction of the lock shaft, and the lock base 30 is arranged on the bottom plate 24. The longitudinal beam 21 includes a top plate 22, a side plate 23 and a bottom plate 24 connected in sequence, and has a simple structure and high stability.

[0092] The longitudinal beam 21 further includes a folding plate 26, which extends upward from the edge of the bottom plate 24. There is a gap between the top surface of the folding plate 26 and the top plate 22. An accommodating space is formed between the folding plate 26 and the side plate 23. The lock base 30 is arranged in the accommodating space through the gap. The folding plate 26 further improves the strength of the longitudinal beam 21, and the accommodating space can provide a relatively stable installation and use environment for the lock base 30, reducing the entry of foreign matter.

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

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

[0095] The lock base 30 includes a base body 33 and a mounting edge 34, the mounting edge 34 extends outward from the base body 33, 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 on the bottom plate 24. The base body 33 is inserted into the insertion slot 25, so that the battery box 51 is locked to the lock base 30 from bottom to top. The mounting edge 34 is clamped on the bottom plate 24, which can simplify the connection between the lock base 30 and the longitudinal beam 21, improve the stability of the connection, and prevent the lock base 30 from falling from the longitudinal beam 21.

[0096] In other embodiments, a mounting flange is provided on the side wall of the longitudinal beam 21, and the lock base 30 is provided at the bottom of the mounting flange. The lock base 30 is provided on the mounting flange, and the structure is simple. Preferably, the mounting flange is formed by extending outward from the side wall of the longitudinal beam 21, so that the installation space outside the vehicle beam 52 can be fully utilized.

[0097] like Figure 2 and Figure 6 As shown, the quick-change bracket assembly 100 further includes a plurality of reinforcing ribs 11, which are clamped between the top plate 22 and the bottom plate 24, and the sides of the reinforcing ribs 11 are connected to the side plates 23. The reinforcing ribs 11 can further improve the strength of the longitudinal beam 21.

[0098] As an embodiment, the reinforcing rib plate 11 includes a U-shaped plate 111 and two outer flaps 112, the two outer flaps 112 extend outward from the opening of the U-shaped plate 111, and the U-shaped plate 111 and the outer flaps 112 are both clamped between the top plate 22 and the bottom plate 24, and the outer flaps 112 are connected to the side plates 23. The reinforcing rib plate 11 includes a U-shaped plate 111 and two outer flaps 112, which have a simple structure and high strength, and are easy to connect with the longitudinal beam 21. A weight-reducing hole 14 is provided on one side of the reinforcing rib plate 11 away from the side plate 23. 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 be of other structural forms.

[0099] The quick-change bracket assembly 100 also includes a column 12 and a crossbeam 13. The longitudinal beam 21 is connected to the crossbeam 13 through the column 12. The longitudinal beam 21, the column 12 and the crossbeam 13 are sequentially connected to form a rectangular frame. The rectangular frame-shaped quick-change bracket assembly 100 has a simple structure and is easy 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 facilitates the accommodation of the battery box 51, increases the height of the battery box 51, and avoids interference between the battery box 51 and other components of the electric vehicle 500. It can also avoid interference between the cross beam 13 and the vehicle beam 52.

[0101] The longitudinal beam 21 and the cross beam 13 are both provided with weight-reducing holes 14. The weight-reducing holes 14 are convenient for reducing the weight of the longitudinal beam 21 and the cross beam 13, which is beneficial for improving the endurance of the electric vehicle 500. The weight-reducing holes 14 can be circular holes, rectangular holes, etc.

[0102] A reinforcement member 15 is provided between the longitudinal beam 21 and the pillar 12. The reinforcement member 15 can improve the strength and stability between the longitudinal beam 21 and the pillar 12.

[0103] Preferably, the quick-change bracket assembly 100 further includes an electrical connector 16 , which is disposed in the middle of the crossbeam 13 , so as to facilitate the electrical connection between the battery box 51 and the electric vehicle 500 .

[0104] In this embodiment, if Figure 1 As shown, the column 12 is a rectangular column 12, four columns 12 are arranged at four corners, and two longitudinal beams 21 are arranged opposite to each other and clamped between the two columns 12. Two cross beams 13 are arranged opposite to each other. The reinforcement 15 can be a tetrahedron structure, and the side of the reinforcement 15 is triangular. Four reinforcements 15 are arranged at the interface between the column 12 and the longitudinal beam 21. One surface of the triangular reinforcement 15 is in contact with the side of the column 12, and the other surface of the triangular reinforcement 15 is in contact with the top surface of the longitudinal beam 21.

[0105] like Figure 5As shown, a guide portion 35 is provided at the lower end of the lock base 30, and the cross section of the guide portion 35 becomes larger along the direction in which the lock shaft enters the opening 31. The guide portion 35 facilitates the positioning of the lock shaft of the battery box 51 and the lock base 30, and facilitates the entry into the opening 31 and the slideway 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, which is connected to the slide 32. The quick-change bracket assembly 100 also includes a locking tongue 37 and a locking link 38. The locking tongue 37 is pivoted on the lock base 30, and the locking tongue 37 can swing in the receiving groove 36 and the slide 32 to connect or block the slide 32; the locking link 38 acts on the locking tongue 37, and the locking link 38 is used to drive the locking tongue 37 to swing. The locking tongue 37 is arranged in the receiving groove 36, and the structure is compact and easy to operate. The locking tongue 37 can lock the battery box 51 in the slide 32. The locking link 38 is convenient for applying a force to the locking tongue 37, and is also convenient for synchronously controlling multiple locking tongues 37. The locking link 38 moves left or right under the action of an external force, thereby driving the locking tongue 37 to pivot, and the rotating locking tongue 37 leaves and enters the slide 32, thereby realizing the unlocking or locking of the lock shaft of the battery box 51.

[0107] The quick-change bracket assembly 100 further includes a reset member 39, one end of which is connected to one end of the lock link 38, and the other end of which is connected to the vehicle body bracket 20. The reset member 39 applies a force to the lock tongue 37 through the lock link 38, so that the lock tongue 37 is in a locked state, which can prevent the lock tongue 37 from being mislocked and improve the safety of locking the battery box 51. In this embodiment, the reset member 39 can be specifically a spring, one end of which is arranged on the longitudinal beam 21, and the other end of the spring is connected to the end of the lock link 38, and the spring applies a pulling force to the lock link 38.

[0108] The quick-change bracket assembly 100 further includes a buffer portion 40, at least a portion of which is located in the slideway 32. When the lock shaft is at the locking point in the slideway 32, the buffer portion 40 abuts against the lock shaft. The buffer portion 40 absorbs part of the kinetic energy when the lock shaft is converted to the locked state, thereby reducing the impact of the lock shaft on the lock base 30, reducing the noise when the lock base 30 is locked, and improving the stability of the lock shaft in the locked state. Specifically, the buffer portion 40 can be made of materials such as rubber and silicone.

[0109] In this embodiment, the lock shaft of the battery box 51 enters the opening 31 from bottom to top, and the upper side of the lock shaft can push the lock tongue 37 to pivot. After the lock tongue 37 rotates, it 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 40 abuts the lock shaft. When the lock shaft reaches the locking point, driven by gravity and the lock link 38, the lock tongue 37 enters the slide 32, and the side of the lock tongue 37 abuts the lock shaft, thereby achieving the locking of the lock shaft. Figure 3As shown, the reset member 39 applies a pulling force to the lock link 38, driving the lock link 38 to move rightward, and the lock link 38 drives the lock tongue 37 to rotate clockwise, thereby ensuring that the lock tongue 37 extends into the slide 32 to avoid mis-locking.

[0110] like Figure 3 As shown, under the action of external force, the lock link 38 can move to the left, and the lock link 38 drives the lock tongue 37 to rotate counterclockwise. The rotated lock tongue 37 leaves the slide 32, so that the lock shaft of the battery box 51 is unlocked, and the lock 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 embodiment, the height space below the longitudinal beam 21 is fully utilized. When the battery exchange equipment disassembles the battery box 51, the unloaded battery exchange equipment can directly enter the space below the battery box 51 without interfering with the bottom of the electric vehicle 500; when the battery exchange equipment installs the battery box 51, the battery exchange equipment carrying the battery box 51 and the battery pack can also directly enter the bottom of the longitudinal beam 21 for battery exchange without interfering with the bottom of the electric vehicle 500. In the whole process, there is no need to lift the vehicle body, set up a sunken space or dig a pit for the battery exchange equipment to enter and exit, which reduces the cost, time and difficulty of building a battery exchange station, reduces the requirements for the site of the station, and improves the efficiency of battery exchange.

[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 the above-mentioned quick-change bracket assembly 100, and the battery box 51 is arranged 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 lock shaft of the battery box 51 from sliding out of one side of the self-locking base 30, and can improve the safety of locking 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 In the figure, only the battery box 51, the beam 52, the quick-change bracket assembly 100, the wheel assembly, etc. of the electric vehicle 500 are shown, and other components of the electric vehicle 500 are not shown. The quick-change bracket assembly 100 is arranged on the beam 52 along the length direction of the electric vehicle 500. The battery box 51 is locked by the quick-change bracket assembly 100.

[0114] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A quick-change bracket assembly with high locking stability, used to lock a battery box to an electric vehicle, characterized in that: The quick-change bracket assembly comprises: a body bracket, the body bracket being fixed to the electric vehicle; A lock base, the lock base is arranged below the vehicle body bracket, an opening and a slideway extending from the opening are arranged below the lock base, and the opening is used for the lock shaft on the battery box to enter and exit the slideway; The vehicle body bracket includes a longitudinal beam, which extends along the length direction of the electric vehicle, and is fixed to the vehicle beam of the electric vehicle. The lock base is arranged at the bottom of the longitudinal beam, and the longitudinal beam includes a top plate, a side plate and a bottom plate connected in sequence, and the bottom plate is provided with an insertion groove, and the lock base is inserted into the insertion groove from top to bottom. The lock base includes a base body and a mounting edge, and the mounting edge extends outward from all sides of the base body. The lower side surface of the base body is provided with the opening and the slide, and the base body is inserted into the insertion groove, and the mounting edge is clamped on the bottom plate.

2. The quick-change bracket assembly according to claim 1, characterized in that: The opening and the slideway both penetrate the lock base along the axis direction of the lock shaft; And / or, both ends of the lock shaft are exposed from the slideway, and both ends of the lock shaft are connected to the battery box.

3. The quick-change bracket assembly according to claim 1, characterized in that: The side plates are fixedly connected to the vehicle beams, the top plate and the bottom plate extend outwards from both sides of the side plates respectively along the axis direction of the lock shaft, and the lock base is arranged on the bottom plate; And / or, a mounting flange is provided on the side wall of the longitudinal beam, and the lock base is provided at the bottom of the mounting flange.

4. The quick-change bracket assembly according to claim 3, characterized in that: The longitudinal beam further includes a folding plate, the folding plate extends upward from the edge of the bottom plate, a gap is formed between the top surface of the folding plate and the top plate, an accommodation space is formed between the folding plate and the side plate, and the lock base is arranged in the accommodation space through the gap; Preferably, the top plate, the side plate, the bottom plate and the folding plate are an integral structure; Alternatively, the top plate, the side plate, the bottom plate and the folding plate are spliced ​​in sequence.

5. The quick-change bracket assembly according to claim 3, characterized in that: The quick-change bracket assembly also includes a plurality of reinforcing rib plates, which are clamped between the top plate and the bottom plate, and the side edges of the reinforcing rib plates are connected to the side plates.

6. The quick-change bracket assembly according to claim 1, characterized in that: The quick-change bracket assembly further 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 sequentially connected to form a rectangular frame; and / or; the bottom surface of the longitudinal beam is higher than the top surface of the cross beam; and / or; weight-reducing holes are provided on the longitudinal beam and the cross beam; and / or; a reinforcement member is provided between the longitudinal beam and the column; And / or; the quick-change bracket assembly also includes an electrical connector, which is arranged in the middle of the beam.

7. The quick-change bracket assembly according to claim 1, characterized in that: A guide portion is provided at the lower end of the lock base, and a cross section of the guide portion becomes larger along the direction in which the lock shaft enters the opening; And / or, the quick-change bracket assembly further includes a buffer portion, at least a portion of which is located in the slideway, and when the lock shaft is at a locking point in the slideway, the buffer portion abuts against the lock shaft.

8. The quick-change bracket assembly according to claim 1, wherein: The top of the lock base has a receiving groove, and the receiving groove is connected to the slideway. The quick-change bracket assembly also includes: A lock tongue, the lock tongue being pivotally mounted on the lock base, the lock tongue being able to swing in the receiving groove and the slideway to connect or block the slideway; A lock link, wherein the lock link acts on the lock tongue, and the lock link is used to drive the lock tongue to swing.

9. The quick-change bracket assembly according to claim 8, characterized in that: The quick-change bracket assembly also includes a reset member, one end of which is connected to one end of the lock link, and the other end of which is connected to the vehicle body bracket.

10. An electric vehicle, characterized in that: It comprises a battery box and a quick-change bracket assembly as described in any one of claims 1 to 9, wherein the battery box is arranged on the quick-change bracket assembly.

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