Vehicle body bracket for attaching a battery pack and electric vehicle

Abstract

The present application discloses a vehicle body bracket for attaching a battery pack and an electric vehicle. The vehicle body bracket includes a bracket body and a flexible connector. The bracket body is connected to two beams of the electric vehicle respectively, and a flexible connector is provided between the bracket body and at least one beam. The flexible connector is arranged to be movable relative to the corresponding beam of the bracket body. The vehicle body bracket and the beam achieve flexible connection through the flexible connector, thereby reducing the inertial impact between the beam and the bracket body during vehicle operation. The flexible connector provides buffering for the inertial impact between the beam and the bracket body, preventing deformation of the vehicle body bracket and damage to the battery pack attached to the vehicle body bracket, and increasing the service life of the battery pack. The adoption of flexible connection facilitates the replacement of the battery pack on the vehicle body bracket, reduces the requirements for the position accuracy of the vehicle body bracket during parking, and facilitates the installation and removal of the vehicle body bracket and the maintenance of the vehicle body bracket by adopting flexible connection.

Description

Technical Field

[0001] This application relates to the technical field of electric vehicles, and particularly to a vehicle body bracket for attaching a battery pack and an electric vehicle.

[0002] This application claims the priority of a Chinese patent application with an application number of 2022107723580, filed on June 30, 2022, and incorporates all of its contents by reference.

Background Art

[0003] Currently, the emission of automotive exhaust gas is still an important factor in environmental pollution problems. To manage automotive exhaust gas, people have developed natural gas vehicles, hydrogen fuel vehicles, solar energy vehicles, and electric vehicles to replace fuel-powered vehicles. Among them, the most promising for future applications is the electric vehicle.

[0004] Current electric vehicles mainly include two types: direct charging type and fast replacement type. Due to restrictions on charging time and location, many current new energy electric vehicles have adopted a model of quickly replacing the battery for energy replenishment. When the battery of a fast replacement type electric vehicle is replaced, the electric exchange device at the power plant moves downward relative to the electric vehicle and positions itself relative to the vehicle body bracket of the electric vehicle. However, the connection between the vehicle body bracket and the vehicle body is a hard connection, and during the intense driving of the electric vehicle, it is easy to give a hard impact between the vehicle body bracket and the vehicle body, causing the vehicle body bracket to deform. The impact between the vehicle body bracket and the electric vehicle damages the internal structure of the battery pack and affects the service life of the battery pack.

[0005] As described above, the connection between the vehicle body bracket and the beam in the current technology is a hard connection, which damages the vehicle body bracket and the battery pack during the intense driving of the electric vehicle and affects the service life of the battery pack.

Summary of the Invention

Problems to be Solved by the Invention

[0006] The technical problem to be solved by this application is to overcome the defect that the connection between the current vehicle body bracket and the beam is a hard connection, which may damage the vehicle body bracket and the battery pack during the intense driving of an electric vehicle, affecting the service life of the battery pack. To this end, a vehicle body bracket for mounting a battery pack and an electric vehicle are provided.

Means for Solving the Problem

[0007] This application solves the above technical problem by the following technical solutions.

[0008] A vehicle body bracket for mounting a battery pack, wherein the vehicle body bracket includes a bracket body and a flexible connector. The bracket body is connected to two beams of an electric vehicle respectively, and a flexible connector is provided between the bracket body and at least one of the beams. The flexible connector is arranged to be movable relative to the corresponding beam of the bracket body.

[0009] In this technical solution, the flexible connection between the vehicle body bracket and the beam is realized by the flexible connector. Compared with the rigid connection between the vehicle body bracket and the beam in the prior art, the inertial impact between the beam and the bracket body during vehicle operation can be reduced. The flexible connector provides buffering for the inertial impact between the beam and the bracket body, preventing deformation of the vehicle body bracket and damage to the inside of the battery pack mounted on the vehicle body bracket due to impact, increasing the service life of the battery pack, and reducing the cost of the complete vehicle. The adoption of flexible connection facilitates the replacement of the battery pack on the vehicle body bracket, reduces the requirements for the position accuracy of the vehicle body bracket during parking, and facilitates the installation and removal of the vehicle body bracket and the maintenance of the vehicle body bracket by adopting flexible connection.

[0010] Preferably, the flexible connector includes a first adapter and a second adapter, one of the first adapter and the second adapter is provided on the bracket body, the other is provided on the beam, and the first adapter and the second adapter are movably connected.

[0011] In the present application, the above structural form is adopted, the first adapter and the second adapter are movably connected, realizing the flexible connection between the vehicle body bracket and the beam. The vehicle body bracket can float flexibly with respect to the beam, and the structure is simple.

[0012] Preferably, the first adapter includes a first connection seat and an adapter bushing, the second adapter includes a second connection seat and an adapter shaft, one of the first connection seat and the second connection seat is connected to the beam, the other is connected to the bracket body, the adapter bushing is connected to the first connection seat, the adapter shaft is connected to the second connection seat, and the adapter bushing is sleeved outside the adapter shaft.

[0013] In the present application, the above structural form is adopted. The adapter bushing is sleeved outside the adapter shaft. By the rotational connection between the adapter shaft and the adapter bushing, the movable connection between the first adapter and the second adapter is realized. The rotational connection is not restricted and can rotate. It has sufficient rigidity and can withstand bending moment. The bracket body and the beam only transmit the vertical shear force and do not transmit the bending moment. This connection method is not restricted and can rotate.

[0014] Preferably, there is a second gap between the adapter shaft and the adapter bushing, and / or there is a first gap between the first adapter and the second adapter along the direction parallel to the beam.

[0015] In the present application, there is a second gap between the adapter shaft and the adapter bush, the first adapter and the second adapter have the second gap, and the second gap can increase the floating range of the vehicle body bracket along the width direction of the vehicle body, realize the vertical floating of the vehicle body bracket, improve the buffering ability between the vehicle body bracket and the beam, reduce the impact between the vehicle body bracket and the beam, and also, by adopting the above structural form, a greater buffering force can be provided, and after the beam assembly is impacted, it can recover to a stable state more quickly. Also, there is a first gap between the first adapter and the second adapter, which can realize the floating along the length direction of the vehicle body. When the vehicle speed suddenly changes, the bracket body moves within the first gap, and the friction due to the weight of the vehicle body bracket reduces the impact between the second adapter and the first adapter on the vehicle body bracket, thereby reducing the hard impact between the vehicle body bracket and the beam and preventing the deformation of the vehicle body bracket. Further, such a configuration is advantageous for the attachment of the first adapter or the second adapter, and is also advantageous for the mutual detachment between the first adapter and the second adapter, and is advantageous for the maintenance of the vehicle body bracket.

[0016] Preferably, the flexible connector further includes a flexible sleeve, and the flexible sleeve is provided between the adapter shaft and the adapter bush.

[0017] In the present application, the outside of the adapter shaft is provided with a flexible sleeve sleeved thereon. This structure is advantageous for the attachment of the first adapter or the second adapter. When the vehicle body bracket and the beam are impacted, the flexible sleeve deforms to absorb the impact between the vehicle body bracket and the beam, and the flexible sleeve enhances the buffering ability between the first adapter and the second adapter.

[0018] Preferably, the flexible connector further includes a pressing sleeve, and the pressing sleeve is provided between the flexible sleeve and the adapter bush, and the pressing sleeve is pressed and fitted to the adapter bush.

[0019] In the present application, the flexible connector further includes a pressing sleeve, and the pressing sleeve is pressed and fitted onto the adapter bush to further press the flexible sleeve, thereby enhancing the mounting stability of the flexible sleeve.

[0020] Preferably, the flexible connector further includes an elastic pad, and the elastic pad is provided on the first connector and / or the second connector and is located within the first gap.

[0021] In the present application, an elastic pad is provided on the outer side of the adapter shaft and / or on the side of the second connector facing the adapter shaft, enhancing the buffering ability in a plane perpendicular to the longitudinal direction of the beam between the second connector on the vehicle body bracket and the first connector on the beam, and reducing the hard impact between the vehicle body bracket and the beam.

[0022] Preferably, the flexible connector further includes a sliding bearing, and the sliding bearing is provided between the adapter shaft and the adapter bush.

[0023] In the present application, the sliding bearing is provided between the adapter shaft and the adapter bush, which is advantageous for enhancing the smoothness of rotation between the adapter shaft and the adapter bearing.

[0024] Preferably, a stopper block is provided on the side of the bracket body facing the beam, and the stopper block abuts against the beam to restrict the movement of the bracket body towards the beam.

[0025] In the present application, the stopper block can limit the floating of the vehicle body bracket within a preset range to avoid the vehicle body bracket floating too much and colliding hard with the beam.

[0026] Preferably, the flexible connectors are provided between the bracket body and the two beams, and at least two flexible connectors are provided between the bracket body and each beam.

[0027] In the present application, at least two flexible connectors are provided on each side of the bracket body, facilitating the assembly and removal of the vehicle body bracket. The two flexible connectors enhance the reliability of the connection between the bracket body and the beam. At least two flexible connectors are provided on both sides of the beam, significantly improving the buffer range and buffer capacity between the vehicle body bracket and the beam.

[0028] Preferably, both the flexible connector and the bracket body are provided inside the beam.

[0029] In the present application, the vehicle body bracket for mounting the battery pack can make full use of the space between the two beams of the electric vehicle and the height space below the beam. When the electric exchange device removes the battery pack, the vehicle body bracket is placed inside the beam, saving space.

[0030] Preferably, the bracket body includes two longitudinal beams, and the two longitudinal beams are respectively connected to the corresponding beam by the flexible connectors. The longitudinal beam includes a horizontal mounting plate, a vertical continuation plate, and a reinforcing rib plate. The flexible connector is provided on the horizontal mounting plate. The vertical continuation plate is connected to one side of the horizontal mounting plate. The reinforcing rib plates are respectively connected to the horizontal mounting plate and the vertical continuation plate.

[0031] In the present application, the flexible connector is provided on the horizontal mounting plate, facilitating the installation of the flexible connector. The vertical continuation plate is connected to one side of the horizontal mounting plate, facilitating the connection of the longitudinal beam to other members and enhancing the structural strength of the longitudinal beam. Furthermore, the reinforcing rib plates are respectively connected to the horizontal mounting plate and the vertical continuation plate, further enhancing the structural strength of the longitudinal beam.

[0032] Preferably, the bracket body further includes a reinforcing cross beam, the reinforcing cross beam is provided between the two longitudinal beams, and both ends of the reinforcing cross beam are respectively connected to the corresponding vertical continuous plates.

[0033] In the present application, a reinforcing cross beam is further provided on the bracket body, the reinforcing cross beam is provided on two longitudinal beam brackets, both ends of the reinforcing cross beam are respectively connected to the corresponding vertical continuous plates, and the overall structure enhances the overall structural strength of the bracket body and improves the ability of the bracket body to resist vehicle body impact.

[0034] Preferably, the edge on the other side of the horizontal mounting plate facing the vertical continuous plate is bent upward to form a first flange, and / or the edge on the side of the vertical continuous plate away from the horizontal mounting plate is folded back in the horizontal direction to form a second flange.

[0035] In the present application, by bending the edge on the other side of the horizontal mounting plate facing the vertical continuous plate upward to form a first flange, the bending resistance performance of the horizontal mounting plate is enhanced, and the first flange, the horizontal mounting plate and the vertical mounting plate form a "Ji" - shaped concave groove, greatly improving the reliability of the connection between the flexible connector, the vehicle body bracket and the beam. The edge on the side of the vertical continuous plate away from the horizontal mounting plate is folded back in the horizontal direction to form a second flange, which is beneficial to enhancing the bending resistance performance of the horizontal mounting plate and improving the structural strength of the connection between the reinforcing cross beam and the longitudinal beam.

[0036] Preferably, a wire groove is provided on the bracket body, and the wire groove is for arranging cables.

[0037] In the present application, by installing the wire groove, the arrangement of the cables can be facilitated and effective protection can be provided for the cables.

[0038] Preferably, the vehicle body bracket further includes a connector bracket, the connector bracket is connected to the bracket body, and a vehicle end connector is attached to the connector bracket.

[0039] In the present application, a connector bracket for attaching the vehicle end connector (for example, a vehicle end electrical connector) is further provided on the vehicle body bracket to facilitate the connection between the electrical connector on the battery pack and the vehicle end electrical connector.

[0040] Preferably, a positioning hole for inserting the positioning pin of the electrical exchange device is provided on the connector bracket.

[0041] In the present application, the positioning hole is provided at the bottom of the connector bracket, so that the positioning pillar of the electrical exchange device can be easily inserted from bottom to top. Further, by fixing the position of the electrical exchange device, the accurate alignment between the electrical exchange device and the battery pack can be ensured, and it can be guaranteed that no relative displacement occurs between the electrical exchange equipment and the electric vehicle during the installation and removal of the battery pack, which is advantageous for the installation and removal of the battery pack.

[0042] Preferably, a first sensor is further provided on the connector bracket, and the first sensor detects whether the positioning pin is inserted into a predetermined position.

[0043] In the present application, by installing the first sensor on the connector bracket, the first sensor detects whether the positioning pin is inserted into a predetermined position, ensures the accurate and reliable insertion of the positioning pin, and improves the safety during the electrical exchange of the electrical exchange device.

[0044] Preferably, the vehicle body bracket further includes a locking mechanism, the locking mechanism is fitted to the locking member of the battery pack, and locks or unlocks the battery pack.

[0045] In the present application, the vehicle body bracket includes a locking mechanism, whereby the battery pack is connected to the vehicle body bracket by the locking mechanism, ensuring that the battery pack is locked onto the vehicle body bracket. When the battery pack needs to be replaced, the locking mechanism releases the lock and removes the battery pack from the vehicle body bracket.

[0046] Preferably, the vehicle body bracket further includes a detection assembly for detecting whether the locking mechanism is locked or unlocked at a predetermined position. The detection assembly includes a second sensor and an identification member. The identification member is provided on the locking mechanism, and the second sensor is provided on the bracket body. The position of the second sensor corresponds to the position of the identification member when the locking mechanism is in the locked state.

[0047] In the present application, the detection assembly enhances the reliability of the battery pack lock by the locking mechanism and ensures that the battery pack is securely fixed to the vehicle body bracket.

[0048] An electric vehicle including the vehicle body bracket for mounting the battery pack, wherein the vehicle body bracket for mounting the battery pack is connected to the beam of the electric vehicle.

[0049] In the present application, the vehicle body bracket and the beam are flexibly connected by a flexible connector. Compared with the rigid connection between the vehicle body bracket and the beam bracket in the prior art, when the vehicle is in operation, the inertial impact between the beam and the bracket body can be reduced. The flexible connector provides buffering for the inertial impact between the beam and the bracket body, thereby preventing the deformation of the vehicle body bracket and the damage to the inside of the battery pack attached to the vehicle body bracket due to impact, increasing the service life of the battery pack, and reducing the cost of the completed vehicle. The adoption of flexible connection facilitates the replacement of the battery pack on the vehicle body bracket, reduces the requirements for the position accuracy of the vehicle body bracket during parking, facilitates the installation and removal of the vehicle body bracket by adopting flexible connection, and facilitates the maintenance of the vehicle body bracket.

[0050] On the premise of conforming to the common knowledge in the technical field, the above-mentioned preferred conditions can be arbitrarily combined, that is, each preferred embodiment of the present application can be obtained.

[0051] The beneficial technical effects of the present application are that the vehicle body bracket and the beam are flexibly connected by a flexible connector. Compared with the rigid connection between the vehicle body bracket and the beam in the prior art, when the vehicle is in operation, the inertial impact between the beam and the bracket body can be reduced. The flexible connector provides buffering for the inertial impact between the beam and the bracket body, thereby preventing the deformation of the vehicle body bracket and the damage to the inside of the battery pack attached to the vehicle body bracket due to impact, increasing the service life of the battery pack, and reducing the cost of the completed vehicle. The adoption of flexible connection facilitates the replacement of the battery pack on the vehicle body bracket, reduces the requirements for the position accuracy of the vehicle body bracket during parking, facilitates the installation and removal of the vehicle body bracket by adopting flexible connection, and facilitates the maintenance of the vehicle body bracket.

Brief Description of the Drawings

[0052]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying out the Invention

[0053] Hereinafter, more preferred embodiments will be given, and the present application will be described more clearly and completely with reference to the accompanying drawings.

[0054] As shown in FIGS. 1 to 8, this embodiment includes a vehicle body bracket 2 for mounting the above battery pack, and the vehicle body bracket 2 for mounting the battery pack provides an electric vehicle 100 connected to the beam 1 of the electric vehicle 100.

[0055] The vehicle body bracket 2 and the beam 1 achieve flexible connection through the flexible connector 21. Compared with the rigid connection between the vehicle body bracket 2 and the beam 1 in the existing technology, during vehicle operation, the inertial impact between the beam 1 and the bracket body 20 can be reduced. The flexible connector 21 provides buffering for the inertial impact between the beam 1 and the bracket body 20, preventing deformation of the vehicle body bracket 2 and damage to the inside of the battery pack attached to the vehicle body bracket 2 due to impact, increasing the service life of the battery pack, and reducing the cost of the complete vehicle. The adoption of flexible connection facilitates the replacement of the battery pack on the vehicle body bracket 2, reduces the requirements for the position accuracy of the vehicle body bracket 2 during parking, facilitates the installation and removal of the vehicle body bracket 2 by adopting flexible connection, and facilitates the maintenance of the vehicle body bracket 2.

[0056] The vehicle body bracket 2 includes a bracket body 20 and a flexible connector 21. As shown in FIG. 2, the bracket body 20 is connected to two beams 1 of the electric vehicle 100 respectively, and a flexible connector 21 is provided between the bracket body 20 and at least one beam 1. The flexible connector 21 is arranged movably with respect to the corresponding beam 1 of the bracket body 20.

[0057] The vehicle body bracket 2 and the beam 1 achieve flexible connection through the flexible connector 21. During vehicle operation, the inertial impact between the beam 1 and the bracket body 20 can be reduced. The flexible connector 21 provides buffering for the inertial impact between the beam 1 and the bracket body 20, preventing deformation of the vehicle body bracket 2. The flexible connection reduces the requirements for the position accuracy of the vehicle body bracket 2 during parking. The adoption of flexible connection facilitates the installation and removal of the vehicle body bracket 2 and facilitates the maintenance of the vehicle body bracket 2.

[0058] As shown in FIGS. 1 and 2, in this embodiment, flexible connectors 21 are provided between the bracket body 20 and the two beams 1, and the flexible connectors 21 are arranged movably with respect to the corresponding beam 1 of the bracket body 20. In this embodiment, flexible connectors 21 are provided on both sides of the connection between the bracket body 20 and the beam 1, increasing the buffer area between the vehicle body bracket 2 and the beam 1 and enhancing the performance of resisting the impact of the vehicle body bracket 2. In other embodiments, the flexible connector 21 may be installed on one side of the bracket body 20 connected to the beam 1. One side of the bracket body 20 is fixed and connected to the beam 1 by a fastener (such as a bolt), and the other side is flexibly connected to the beam 1, and the buffer of inertial impact can also be realized. The number and installation position of the flexible connector 21 can be specifically installed according to practical needs, and this embodiment is not specifically limited.

[0059] In this embodiment, two flexible connectors 21 are provided between the bracket body 20 and each beam 1, facilitating the assembly and disassembly of the vehicle body bracket 2, and the two flexible connectors 21 enhance the reliability of the connection between the bracket body 20 and the beam 1. At least two flexible connectors 21 are provided on both sides of the beam 1, greatly improving the buffer range and buffer capacity between the vehicle body bracket 2 and the beam 1. In other embodiments, the bracket body 20 is provided with flexible connectors 21 between it and the two beams 1 respectively, and three or more flexible connectors 21 are provided between the bracket body 20 and each beam 1. Three or more flexible connectors 21 are provided on both sides of the beam 1, further enhancing the buffer range and buffer capacity between the vehicle body bracket 2 and the beam 1.

[0060] In this embodiment, as shown in FIGS. 3 and 4, the flexible connector 21 includes a first adapter 211 and a second adapter 212. The first adapter 211 is provided on the bracket body 20, the second adapter 212 is provided on the beam 1, and the first adapter 211 and the second adapter 212 are movably connected.

[0061] In other embodiments, the flexible connector 21 includes a first adapter 211 and a second adapter 212. The second adapter 212 is provided on the bracket body 20, the first adapter 211 is provided on the beam 1, and the first adapter 211 and the second adapter 212 are rotatably connected.

[0062] By adopting the above structural form and movably connecting the first adapter 211 and the second adapter 212, a flexible connection between the vehicle body bracket and the beam is realized, and the vehicle body bracket can float flexibly with respect to the beam, and the structure is simple.

[0063] In the first embodiment, the first adapter 211 includes a first connection seat 2111 and an adapter bush 2112, the second adapter 212 includes a second connection seat 2121 and an adapter shaft 2122, the second connection seat 2121 connects the beam 1, the first connection seat 2111 is connected to the bracket body 20, the adapter bush 2112 is connected to the first connection seat 2111, the adapter shaft 2122 is connected to the second connection seat 2121, and the adapter bush 2112 is sleeved outside the adapter shaft 2122.

[0064] In this embodiment, the first adapter 211 includes a first connection seat 2111 and an adapter bush 2112, the second adapter 212 includes a second connection seat 2121 and an adapter shaft 2122, the first connection seat 2111 connects the beam 1, the second connection seat 2121 is connected to the bracket body 20, the adapter bush 2112 is connected to the first connection seat 2111, the adapter shaft 2122 is connected to the second connection seat 2121, and the adapter bush 2112 is sleeved outside the adapter shaft 2122.

[0065] Adopting the above structural form, the adapter bush 2112 is sleeved outside the adapter shaft 2122. By movably connecting the adapter shaft 2122 and the adapter bush 2112, the rotational connection is not restricted and can rotate. It has sufficient rigidity, can withstand bending moments, the bracket body and the beam only transmit the vertical shear force and do not transmit the bending moment, and this connection method can rotate without being restricted. Also, when the magnitudes of the inertial forces received at both ends of the vehicle body bracket 2 are different or the directions of the inertial forces are different, at this time, the vehicle body bracket 2 will rotate around the beam 1 due to the inertial force, and the damage to the battery pack caused by the inertial force can be prevented by rotation, and the service life of the battery pack can be increased. The vehicle body bracket 2 can prevent the adapter bush 2112 from colliding with the vehicle body bracket 2 and the vehicle beam 1 during rotation, and can reduce the magnitude of the inertial force received by the vehicle body bracket 2 by the adapter bush 2112 during rotation, thereby enabling the vehicle body bracket 2 to return to a stable state more quickly.

[0066] In this embodiment, there is a second gap 3 between the adapter shaft 2122 and the adapter bush 2112. Specifically, the diameter of the adapter shaft 2122 is smaller than the diameter of the through hole of the adapter bush 2112, and a second gap 3 is formed between the adapter shaft 2122 and the adapter bush 2112.

[0067] There is a second gap 3 between the adapter shaft 2122 and the adapter bush 2112, and there is a second gap 3 between the first adapter 211 and the second adapter 212. The second gap 3 can increase the floating range of the vehicle body bracket 2 along the vehicle body width direction, realize the vertical floating of the vehicle body bracket 2, improve the buffering ability between the vehicle body bracket 2 and the beam 1, reduce the impact between the vehicle body bracket 2 and the beam 1, and also, by adopting the above structural form, a greater buffering force can be provided, and after the beam assembly is impacted, it can recover to a stable state more quickly. The second gap 3 is also beneficial for the installation and removal between the adapter shaft 2122 and the adapter bush 2112.

[0068] Also, along the direction parallel to the beam 1, there is a first gap 4 between the first adapter 211 and the second adapter 212. Specifically, the axial distance between the ear portions at both ends of the first adapter 211 is greater than the length of the adapter bush 2112, forming the first gap 4. In this embodiment, the maximum value of the first gap 4 in the axial direction of the adapter axis 2122 is 5 mm or less. Having the first gap 4 between the first adapter 211 and the second adapter 212 can realize the floating along the vehicle body length direction. When the vehicle speed suddenly changes, the bracket body 20 moves between the first gaps, and the friction due to the weight of the vehicle body bracket 2 reduces the impact between the second adapter 212 and the first adapter 211 of the vehicle body bracket 2, thereby reducing the hard impact between the vehicle body bracket 2 and the beam 1 and preventing the deformation of the vehicle body bracket 2. Also, such a configuration is advantageous for the installation of the first adapter 211 or the second adapter 212, and is also advantageous for the mutual removal between the first adapter 211 and the second adapter 212, and is advantageous for the maintenance of the vehicle body bracket 2.

[0069] As shown in FIG. 4, in the first embodiment, the flexible connector 21 further includes a flexible sleeve 31, and the flexible sleeve 31 is provided between the adapter shaft 2122 and the adapter bush 2112. In this embodiment, the outside of the adapter shaft 2122 is sleeved with the flexible sleeve 31. This structure is advantageous for the installation of the first adapter 211 or the second adapter 212. When the vehicle body bracket 2 and the beam 1 are impacted, the flexible sleeve 31 deforms to absorb the impact between the vehicle body bracket 2 and the beam 1, and the flexible sleeve 31 enhances the buffering ability between the first adapter 211 and the second adapter 212.

[0070] Specifically, the flexible sleeve 31 is made of an elastic material. More specifically, the flexible sleeve 31 may be a rubber sleeve, but is not limited thereto. In this embodiment, between the adapter bush 2112 and the adapter shaft 2122, a movable connection is realized by the deformation of the flexible sleeve 31, a movable connection between the first adapter 211 and the second adapter 212 is realized, and further, the vehicle body bracket 2 realizes floating with respect to the beam 1.

[0071] Furthermore, the rubber sleeve is sleeved outside the adapter shaft 2122 and provided to fill the second gap 3. Both sides inside and outside the rubber sleeve are respectively abutted against the adapter shaft 2122 and the adapter bush 2112. There is no relative displacement between the rubber sleeve and the adapter shaft 2122 and the adapter bush 2112 by receiving the action of frictional force. When the vehicle body bracket 2 and the beam 1 are subjected to an impact, the first adapter 211 and the second adapter 212 move according to the corresponding vehicle body bracket 2 and the beam 1 respectively. Due to the action of the rubber sleeve, there is no relative rotation between the adapter bush 2112 and the adapter shaft 2122. At this time, when the rubber sleeve is subjected to force and pressed to generate distortion in the direction of receiving the force, the buffering action between the adapter bush 2112 and the adapter shaft 2122 is realized, the impact force is reduced, and further, the vehicle body bracket 2 realizes smooth floating with respect to the beam 1. The direction of receiving the force can be the vertical direction, the direction parallel to the vehicle body width direction, and any direction along the circumferential direction of the adapter shaft 2122. The rubber sleeve can absorb any inertial impact in the circumferential direction of the adapter shaft 2122 between the beam 1 and the bracket body 20 during operation, and has a high buffering effect.

[0072] In this embodiment, as shown in FIGS. 3 and 4, the flexible connector 21 further includes a retaining sleeve 32. The retaining sleeve 32 is provided between the flexible sleeve 31 and the adapter bush 2112, and the retaining sleeve 32 is pressed and fitted to the adapter bush 2112. The flexible connector 21 further includes a retaining sleeve 32. The retaining sleeve 32 is pressed and fitted to the adapter bush 2112, and by further pressing the flexible sleeve 31, the mounting stability of the flexible sleeve 31 can be enhanced.

[0073] Specifically, the retaining sleeve 32 can be manufactured using a metal material, but is not limited thereto. Preferably, the retaining sleeve 32 uses a steel sleeve. In this embodiment, the retaining sleeve 32 is pressed and fitted to the adapter bush 2112. Between the adapter bush 2112, the retaining sleeve 32, the rubber sleeve, and the adapter shaft 2122, they are pressed and fitted to each other, ensuring that the flexible sleeve 31 does not rotate or move relative to the adapter shaft 2122 and the adapter bush 2112. There is no relative displacement between the adapter bush 2112, the retaining sleeve 32, the flexible sleeve 31, and the adapter shaft 2122, and the reliability of the mounting stability of the flexible sleeve 31 can be effectively guaranteed. The flexible sleeve 31 receives a more stable force during the impact between the vehicle body bracket 2 and the beam 1, ensuring that the flexible sleeve 31 stably absorbs the impact between the vehicle body bracket 2 and the beam 1. Furthermore, when the pressing condition between the retaining sleeve 32 and the adapter bush 2112 satisfies that the rubber sleeve does not distort, it is only necessary that there is no relative displacement between the adapter bush 2112, the retaining sleeve 32, the rubber sleeve, and the adapter shaft 2122, and this embodiment is not particularly limited.

[0074] In the first embodiment, the flexible connector 21 further includes an elastic pad, the elastic pad is provided on the first adapter 211, and the elastic pad is located within the first gap 4. Alternatively, in other embodiments, the flexible connector 21 further includes an elastic pad, the elastic pad is provided on the second adapter 212, and the elastic pad is located within the first gap 4. Furthermore, in other embodiments, elastic pads can also be provided on the first adapter 211 and the second adapter 212 together, and this embodiment is not particularly limited.

[0075] An elastic pad is provided on the outer side of the adapter shaft 2122 and / or on the side of the second adapter 212 facing the adapter shaft 2122, enhancing the buffering capacity in a plane perpendicular to the longitudinal direction of the beam 1 between the second connector on the vehicle body bracket 2 and the first connector on the beam 1, and reducing the hard impact between the vehicle body bracket 2 and the beam 1.

[0076] In other preferred embodiments, the flexible connector 21 further includes a sliding bearing, and the sliding bearing is provided between the adapter shaft 2122 and the adapter bush 2112.

[0077] The sliding bearing is provided between the adapter shaft 2122 and the adapter bush 2112, which is advantageous for enhancing the smoothness of rotation between the adapter shaft 2122 and the adapter bearing 2122. Also, the operation of the sliding bearing is stable, reliable, and noise-free. Under liquid lubrication conditions, the sliding surfaces are separated by lubricating oil, without direct contact, and can significantly reduce friction loss and surface wear. The oil film also has a certain vibration absorption capacity.

[0078] In this embodiment, a stopper block is provided on the side of the bracket body 20 facing the beam 1, and the stopper block abuts against the beam 1 to restrict the movement of the bracket body 20 towards the beam 1. Specifically, the stopper block can be manufactured using an elastic material "such as rubber, etc.", but is not limited thereto.

[0079] The stopper block can limit the movement within a preset range of the vehicle body bracket 2, enhance the reliability of the distance between the vehicle body bracket 2 and the beam 1, and avoid the vehicle body bracket 2 from floating too much and colliding hard with the beam 1. It can also prevent the direct impact between the vehicle body bracket 2 and the beam 1 due to the failure of the flexible connector 21, and effectively protect the vehicle body bracket 2 and the beam 1.

[0080] In this embodiment, both the flexible connector 21 and the bracket body 20 are provided inside the beam 1. The vehicle body bracket 2 for mounting the battery pack can make full use of the space between the two beams 1 of the electric vehicle 100 and the height space below the beam 1. When the electric exchange device removes the battery pack, the vehicle body bracket 2 can be placed inside the beam 1, saving space.

[0081] In other embodiments, the bracket body 20 is connected to the outside of the beam 1 by the flexible connector 21, and the utilization of the space outside the beam 1 can be realized. When the bracket body 20 is installed to be located outside the beam 1, both the flexible connector 21 and the bracket body 20 are provided outside the beam 1. The bracket body 20 is connected to the outer wall of the beam 1 by the flexible connector 21. Practically, according to the need, the specific position for connecting the bracket body 20 onto the beam 1 can be specifically selected, and this embodiment is not particularly limited.

[0082] In this embodiment, the bracket body 20 includes two longitudinal beams 22. The two longitudinal beams 22 are respectively connected to the corresponding beam 1 by the flexible connector 21. The longitudinal beam 22 includes a horizontal mounting plate 221, a vertical connecting plate 222, and a reinforcing rib plate 223. The flexible connector 21 is provided on the horizontal mounting plate 221. The vertical connecting plate 222 is connected to one side of the horizontal mounting plate 221. The reinforcing rib plates 223 are respectively connected to the horizontal mounting plate 221 and the vertical connecting plate 222.

[0083] The flexible connector 21 is provided on the horizontal mounting plate 221, facilitating the installation of the flexible connector 21. The vertical connecting plate 222 is connected to one side of the horizontal mounting plate 221, facilitating the connection of the vertical beam 22 to other members and enhancing the structural strength of the vertical beam 22. Furthermore, the reinforcing rib plates 223 are respectively connected to the horizontal mounting plate 221 and the vertical connecting plate 222, further enhancing the structural strength of the vertical beam 22.

[0084] In this embodiment, the bracket body 20 further includes a reinforcing cross beam 23. The reinforcing cross beam 23 is provided between the two vertical beams 22, and both ends of the reinforcing cross beam 23 are respectively connected to the corresponding vertical connecting plates 222. The reinforcing cross beam 23 is uniformly provided between the two vertical beams 22, and the number of the reinforcing cross beams 23 is determined according to the weight borne by the vehicle body bracket 2.

[0085] A reinforcing cross beam 23 is further provided on the bracket body 20. The reinforcing cross beam 23 is provided between the two vertical beams 22, and both ends of the reinforcing cross beam 23 are respectively connected to the corresponding vertical connecting plates 222. The above overall structure enhances the overall structural strength of the bracket body 20 and the ability of the bracket body 20 to resist vehicle body impacts.

[0086] In this embodiment, the edge on the other side of the vertical connecting plate 222 facing the horizontal mounting plate 221 is bent upward to form a first flange 2211.

[0087] The edge of the vertical connecting plate 222 on the side away from the horizontal mounting plate 221 is folded back horizontally to form a second flange 2222.

[0088] The edge on the other side of the vertical connecting plate 222 facing the horizontal mounting plate 221 is bent upward to form the first flange 2211, enhancing the bending resistance performance of the horizontal mounting plate 221. The first flange 2211, the horizontal mounting plate 221, and the vertical connecting plate 222 form a "ji" - shaped groove, significantly improving the connection reliability between the flexible connector 21, the vehicle body bracket 2, and the beam 1. The edge of the vertical connecting plate 222 on the side away from the horizontal mounting plate 221 is folded back horizontally to form the second flange 2222, enhancing the bending resistance performance of the vertical connecting plate 222. It is beneficial for connecting the reinforcing cross - beam 23 and improving the structural strength of the connection between the reinforcing cross - beam 23 and the longitudinal beam 22.

[0089] In addition, the flexible connector 21 and the vehicle body bracket 2 having the flexible connector 21 in the above - mentioned embodiment can be implemented independently in practice, and the above - mentioned embodiment is not particularly limited.

[0090] In this embodiment, a wire groove 201 is provided on the bracket body 20, and the wire groove 201 is for arranging cables.

[0091] By installing the wire groove 201, the arrangement of the cables can be facilitated, and effective protection can be provided for the cables. The wire groove 201 and the vehicle body bracket 2 having the wire groove 201 in this embodiment can be implemented independently in practice, and the above - mentioned embodiment is not particularly limited.

[0092] In this embodiment, as shown in FIG. 7, the vehicle body bracket 2 further includes a connector bracket 24. The connector bracket 24 is connected to the bracket body 20, and a vehicle - end connector (for example, the vehicle - end electrical connector 241) is mounted on the connector bracket 24.

[0093] A connector bracket 24 for mounting the vehicle - end connector 241 is further provided on the vehicle body bracket 2, facilitating the connection between the electrical connector on the battery pack and the vehicle - end electrical connector 241.

[0094] Specifically, the vehicle-end connector can include, but is not limited to, the vehicle-end connector 241 and / or the liquid-cooling connector. The vehicle-end connector 241 ensures the power supply function of the battery pack by connecting the electrical connectors on the battery pack. The liquid-cooling connector connects the liquid-cooling connectors on the battery pack, and by connecting the cooling system and the liquid-cooling connectors at the battery pack end respectively, it cools the batteries in the battery pack.

[0095] Note that the connector bracket 24 and the vehicle body bracket 2 having the connector bracket 24 in this embodiment can be implemented independently in practice, and the above embodiments are not particularly limited.

[0096] In this embodiment, positioning holes 242 for inserting the positioning pins on the electrical exchange device are provided on the connector bracket 24.

[0097] Positioning holes 242 for inserting the positioning pillars on the power supply electrical exchange device are opened at the bottom of the connector bracket 24. Specifically, by allowing the positioning holes 242 to penetrate the bottom of the connector bracket 24, it is easier for the positioning pillars of the electrical exchange device to be inserted from bottom to top. Furthermore, by fixing the position of the electrical exchange device, accurate alignment between the electrical exchange device and the battery pack is ensured, and it can be guaranteed that no relative displacement occurs between the electrical exchange equipment and the electric vehicle during the installation and removal process of the battery pack, which is advantageous for the installation and removal of the battery pack.

[0098] In the first embodiment, as shown in FIG. 8, a first sensor 2421 is further provided on the connector bracket 24. The first sensor 2421 ensures the accurate and reliable insertion of the positioning pin by detecting whether the positioning pin is inserted into a predetermined position, and enhances the safety during the electrical exchange of the electrical exchange device.

[0099] By installing the first sensor 2421 on the connector bracket 24, the first sensor 2421 can detect whether the positioning pin is inserted into the predetermined position, enhancing the safety during the electrical exchange process of the electrical exchange device. Furthermore, the first sensor 2421 can use a Hall sensor, but is not limited thereto. A magnetic steel is installed on the positioning pin, and the Hall sensor can detect the magnetic steel on the positioning pin to determine whether the positioning pin is located at the predetermined position. When the positioning pin is separated from the positioning hole 242, the Hall sensor cannot detect the signal of the magnetic steel, and further determines that the electrical exchange device is separated from the vehicle body bracket 2.

[0100] Note that the vehicle body bracket 2 having the positioning hole 242 in the above embodiment can also be implemented independently in practice, and the above embodiment is not particularly limited.

[0101] In the first embodiment, as shown in FIGS. 5 and 7, the vehicle body bracket 2 further includes a locking mechanism 25. By fitting the locking mechanism 25 to the locking member of the battery pack, the battery pack is locked or unlocked. The locking mechanism is provided on the bracket body 20, ensuring that the battery pack is connected to the vehicle body bracket 2 by the locking mechanism 25 and is locked on the vehicle body bracket 2. When the battery pack needs to be replaced, the locking mechanism 25 releases the lock and removes the battery pack from the vehicle body bracket 2.

[0102] In the first embodiment, the locking mechanism 25 includes a locking base 251. One end of the locking base 251 is connected to the bracket body 20, and the other end extends downward from the bracket body 20. An opening and a slide extending from the opening are provided in the downward direction of the locking base 251. The opening is used for the locking shaft on the battery pack to enter and exit the slide, and the opening and the slide penetrate the locking base 251 along the axial direction of the locking shaft. The locking base 251 is provided on the bracket body 20, and the opening of the locking base 251 is provided downward. The battery box enters the slide through the downward opening, so that the battery box is locked in the slide, and the battery box is prevented from entering the slide from the side surface of the locking base 251, and the locking shaft can be prevented from slipping out from one side of the locking base 251, thereby improving the safety of the battery box lock.

[0103] Specifically, in this embodiment, the locking member on the battery pack is a locking shaft. Both ends of the locking shaft are exposed in the slide, and both ends of the locking shaft are connected to the battery pack, so that the middle part of the locking shaft is locked in the slide. Both ends of the locking shaft receive the biasing force of the battery box, further improving the uniformity of the force received by the locking shaft, preventing the locking shaft from slipping out from one side of the locking base 251, and improving the safety of the battery box lock.

[0104] In the first embodiment, the locking mechanism 25 further includes a locking bolt "lock bolt" 252 and a locking link 253. The locking bolt 252 is pivotally provided on the locking base 251. The locking bolt 252 can swing in the accommodating groove and the slide to communicate or block the slide. The locking link 253 acts on the locking bolt 252 to drive the locking bolt 252 to swing. The locking bolt 252 is provided in the accommodating groove, with a compact structure and easy operation. The locking bolt 252 can lock the locking shaft on the battery pack in the slide. The locking link 253 facilitates applying force to the locking bolt 252 and is also advantageous for synchronously controlling a plurality of locking bolts 252.

[0105] In other embodiments, the connection method between the lock base 251 and the lock shaft can also adopt a bolt-type lock or a T-shaped lock, and the above embodiments are not particularly limited. Specifically, a first threaded portion is provided in the opening of the lock base 251, and a second threaded portion that fits with the first threaded portion is integrally provided on the lock shaft of the battery pack. That is, the connection method between the lock base 251 and the lock shaft is a bolt-type lock, and the two can be locked by the fitting of the first threaded portion and the second threaded portion. Alternatively, a position-limiting portion is provided in the opening of the lock base 251, and a stopper portion that fits with the position-limiting portion is integrally provided on the lock shaft of the battery pack. The connection method between the lock base 251 and the lock shaft is a T-shaped lock, and the two can be locked by the fitting of the position-limiting portion and the stopper portion.

[0106] In addition, the lock mechanism 25 in the above embodiment and the vehicle body bracket 2 having the lock mechanism 25 can also be implemented independently in practice, and the above embodiments are not particularly limited.

[0107] In the first embodiment, as shown in FIG. 6, the vehicle body bracket 2 further includes a detection assembly for detecting whether the lock mechanism 25 is locked at a predetermined position and whether it is unlocked. The detection assembly includes a second sensor 26 and an identification member. The identification member is provided on the lock mechanism 25, and the second sensor 26 is provided on the bracket body 20. The position of the second sensor 26 corresponds to the position of the identification member when the lock mechanism 25 is in the locked state. Specifically, preferably, the identification member is provided on the lock link 253. By installing the identification member on the lock link 253 and correspondingly installing the second sensor 26 on the bracket body 20 to install the detection assembly, it is possible to timely and reliably detect whether the lock mechanism 25 is locked at a predetermined position, which is advantageous for improving the locking reliability of the battery pack. Further, the detection assembly can also detect whether the unlocking is at a predetermined position, and can also detect whether the unlocking is accurate and reliable.

[0108] Furthermore, the second sensor 26 may use a Hall sensor, but is not limited thereto. The identification member may use magnetic steel, but is not limited thereto. The magnetic steel is installed in the lock mechanism 25. When the lock mechanism 25 is in the locked state, the lock link 253 drops, and the magnetic steel corresponds to the Hall sensor position. The Hall sensor can detect the magnetic steel and determine that the lock is in a predetermined position. When the lock mechanism 25 is in the unlocked state, the lock link 253 is pushed up, and the magnetic steel moves according to the corresponding lock link 253. After the lock link 253 is pushed up, the Hall sensor detects that it cannot detect the signal of the magnetic steel, and further determines that the unlocking is in a predetermined position.

[0109] Note that the detection assembly in this embodiment and the vehicle body bracket 2 having the detection assembly can be implemented independently in practice, and this embodiment is not specifically limited.

[0110] The detection assembly improves the reliability of the lock of the battery pack by the lock mechanism 25 and ensures that the battery pack is securely fixed on the vehicle body bracket 2.

[0111] In this embodiment, a weight-reducing hole is provided on the bracket body 20. By installing the weight-reducing hole, while meeting the requirements of structural strength, the weight of the bracket body 20 is reduced and the cost is reduced. Specifically, in this embodiment, the weight-reducing hole is opened on the reinforcing rib plate. In other embodiments, the weight-reducing hole can also be opened on the longitudinal beam and the reinforcing cross beam. This embodiment is not specifically limited.

[0112] As described above, the specific embodiments of the present application have been described, but these are merely examples. Those skilled in the art should understand that the protection scope of the present application is defined by the appended claims. Without departing from the principle and spirit of the present application, those skilled in the art can make various changes or corrections to these embodiments, and all of these changes and corrections are included in the protection scope of the present application.

Description of Reference Numerals

[0113] 100…Electric vehicle, 1…Beam, 2…Vehicle body bracket, 20…Bracket body, 201…Wire groove, 21…Flexible connector, 211…First adapter, 2111…First connection seat, 2112…Adapter bush, 212…Second adapter, 2121…Second connection seat, 2122…Adapter shaft, 22…Longitudinal beam, 221…Horizontal mounting plate, 2211…First flange, 222…Vertical connecting plate, 2222…Second flange, 223…Reinforcing rib plate, 23…Reinforcing cross beam, 24…Connector bracket, 241…Vehicle end electrical connector, 242…Positioning hole, 2421…First sensor, 25…Lock mechanism, 251…Lock base, 252…Lock bolt, 253…Lock link, 26…Second sensor, 3…Second gap, 31…Flexible sleeve, 32…Pressing sleeve, 4…First gap.

Claims

1. A vehicle body bracket for attaching a battery pack, wherein the vehicle body bracket includes a bracket body and a flexible connector, the bracket body is connected to two beams of an electric vehicle respectively, a flexible connector is provided between the bracket body and at least one of the beams, the flexible connector is arranged movably with respect to the corresponding beam of the bracket body, and it is a vehicle body bracket for attaching a battery pack.

2. The flexible connector includes a first adapter and a second adapter, one of the first adapter and the second adapter is provided on the bracket body, the other is provided on the beam, and the first adapter and the second adapter are movably connected. The vehicle body bracket for attaching a battery pack according to Claim 1.

3. The first adapter includes a first connection seat and an adapter bush, the second adapter includes a second connection seat and an adapter shaft, one of the first connection seat and the second connection seat connects the beam, the other is connected to the bracket body, the adapter bush is connected to the first connection seat, the adapter shaft is connected to the second connection seat, and the adapter bush is sleeved outside the adapter shaft. The vehicle body bracket for attaching a battery pack according to Claim 2.

4. There is a second gap between the adapter shaft and the adapter bush, and / or There is a first gap between the first adapter and the second adapter along the direction parallel to the beam. The vehicle body bracket for attaching a battery pack according to Claim 3.

5. The flexible connector further includes an elastic pad, the elastic pad is provided on the first connector and / or the second connector, and the elastic pad is located within the first gap. The vehicle body bracket for attaching a battery pack according to Claim 4.

6. The flexible connector further includes a sliding bearing, and the sliding bearing is provided between the adapter shaft and the adapter bush. The vehicle body bracket for attaching a battery pack according to Claim 3.

7. The flexible connector further includes a flexible sleeve, and the flexible sleeve is provided between the adapter shaft and the adapter bush, and is a vehicle body bracket for attaching the battery pack according to claim 3.

8. The flexible connector further includes a pressing sleeve, the pressing sleeve is provided between the flexible sleeve and the adapter bush, and the pressing sleeve is pressed and fitted to the adapter bush, and is a vehicle body bracket for attaching the battery pack according to claim 7.

9. A stopper block is provided on a side of the bracket body facing the beam, and the stopper block abuts against the beam to restrict movement of the bracket body toward the beam, and is a vehicle body bracket for attaching the battery pack according to claim 1.

10. The flexible connector is provided between the bracket body and the two beams, and at least two flexible connectors are provided between the bracket body and each beam, and / or The flexible connector and the bracket body are both provided inside the beam, and is a vehicle body bracket for attaching the battery pack according to claim 1.

11. The bracket body includes two longitudinal beams, and the two longitudinal beams are respectively connected to the corresponding beam by the flexible connector. The longitudinal beam includes a horizontal mounting plate, a vertical continuous plate, and a reinforcing rib plate. The flexible connector is provided on the horizontal mounting plate. The vertical continuous plate is connected to one side of the horizontal mounting plate, and the reinforcing rib plates are respectively connected to the horizontal mounting plate and the vertical continuous plate, and is a vehicle body bracket for attaching the battery pack according to claim 1.

12. The bracket body further includes a reinforcing cross beam, the reinforcing cross beam is provided between the two longitudinal beams, and both ends of the reinforcing cross beam are respectively connected to the corresponding vertical continuous plates, and is a vehicle body bracket for attaching the battery pack according to claim 11.

13. The edge on the other side of the horizontal mounting plate facing the vertical continuous plate is bent upward to form a first flange, and / or The vehicle body bracket for attaching the battery pack according to claim 11, wherein an edge of the vertical connecting plate on a side away from the horizontal mounting plate is folded back in the horizontal direction to form a second flange.

14. The vehicle body bracket for attaching the battery pack according to claim 1, wherein a wire groove for arranging a cable is provided on the bracket body.

15. The vehicle body bracket for attaching the battery pack according to claim 1, wherein the vehicle body bracket further includes a connector bracket, the connector bracket is connected to the bracket body, and a vehicle-end electrical connector is attached to the connector bracket.

16. The vehicle body bracket for attaching the battery pack according to claim 15, wherein a positioning hole for inserting a positioning pin of an electrical exchange device is provided on the connector bracket.

17. The vehicle body bracket for attaching the battery pack according to claim 16, wherein a first sensor is further provided on the connector bracket, and the first sensor detects whether the positioning pin is inserted into a predetermined position.

18. The vehicle body bracket for attaching the battery pack according to claim 1, wherein the vehicle body bracket further includes a locking mechanism, the locking mechanism is fitted to a locking member of the battery pack, and locks or unlocks the battery pack.

19. The vehicle body bracket further includes a detection assembly for detecting whether the locking mechanism is locked or unlocked at a predetermined position. The detection assembly includes a second sensor and an identification member, the identification member is provided on the locking mechanism, and the second sensor is provided on the bracket body. The vehicle body bracket for attaching the battery pack according to claim 18, wherein a position of the second sensor corresponds to a position of the identification member when the locking mechanism is in a locked state.

20. An electric vehicle, including the vehicle body bracket for attaching the battery pack according to any one of claims 1 to 19, wherein the vehicle body bracket for attaching the battery pack is connected to a beam of the electric vehicle.

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