Vehicle body bracket for mounting a battery pack and electric vehicle

Abstract

This application discloses a vehicle body bracket for mounting a battery pack and an electric vehicle. The vehicle body bracket includes a bracket body and a flexible connector. The bracket bodies are respectively connected to two beams of the electric vehicle, with a flexible connector between the bracket body and at least one beam, allowing the bracket body to move relative to the corresponding beam. The flexible connector provides a flexible connection between the vehicle body bracket and the beam, reducing inertial impact between the beam and the bracket body during vehicle operation. The flexible connector buffers the inertial impact between the beam and the bracket body, preventing deformation of the vehicle body bracket and damage to the battery pack mounted on the vehicle body bracket, and extending the service life of the battery pack. The flexible connection facilitates battery pack replacement on the vehicle body bracket, reducing the requirements for positional accuracy of the vehicle body bracket when parking. The flexible connection also facilitates installation and removal of the vehicle body bracket, facilitating maintenance of the vehicle body bracket.

Description

[Technical Field]

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

[0002] This application claims priority from a Chinese patent application filed on June 30, 2022, bearing application number 2022107723580, the entire contents of which are incorporated herein by reference. [Background technology]

[0003] At present, automobile exhaust emissions remain a significant factor in environmental pollution problems. In order to control automobile exhaust emissions, people have developed natural vehicles, hydrogen fuel vehicles, solar energy vehicles, and electric vehicles to replace fuel-powered vehicles, among which electric vehicles have the most promising future applications.

[0004] Current electric vehicles mainly include direct charging and quick-swap models. Due to limitations on charging time and space, many new energy electric vehicles currently use quick-swap battery models for energy replenishment. When quick-swap electric vehicles are swapping batteries, the power station's power exchange device moves downwards to position the battery on the vehicle's chassis. However, the chassis bracket and the chassis are hard-connected, making it easy for a hard impact to occur between them during vigorous driving, deforming the chassis bracket. The impact between the chassis bracket and the electric vehicle can damage the internal structure of the battery pack and affect the battery pack's service life.

[0005] As described above, the current technology uses a hard connection between the body bracket and the beam, which can damage the body bracket and the battery pack when the electric vehicle is running hard, thereby affecting the service life of the battery pack. Summary of the Invention [Problem to be solved by the invention]

[0006] The technical problem to be solved by this application is to provide a body bracket for mounting a battery pack and an electric vehicle to overcome the drawback of the current technology in which the body bracket and the beam are hard-connected, which can damage the body bracket and the battery pack during vigorous driving of the electric vehicle, affecting the service life of the battery pack. [Means for solving the problem]

[0007] The present application aims to solve the above technical problems by the following technical solutions.

[0008] A vehicle body bracket for mounting a battery pack, the vehicle body bracket including a bracket body and a flexible connector, the bracket bodies being respectively connected to two beams of an electric vehicle, the flexible connector being provided between the bracket body and at least one of the beams, and the flexible connector being arranged so that the bracket body can move relative to the corresponding beam.

[0009] In this technical solution, the body bracket and the beam are flexible connected by a flexible connector, which can reduce the inertial impact between the beam and the bracket body while the vehicle is in motion compared to the rigid connection between the body bracket and the beam in current technology, and the flexible connector provides a buffer for the inertial impact between the beam and the bracket body, thereby preventing deformation of the body bracket and damage to the inside of the battery pack attached to the body bracket due to impact, extending the service life of the battery pack and reducing the cost of the finished vehicle. The use of a flexible connection makes it easy to replace the battery pack on the body bracket and reduces the requirements for positional accuracy of the body bracket when parking, and the use of a flexible connection makes it easy to install and remove the body bracket, facilitating maintenance of the body bracket.

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

[0011] In this application, the above structural form is adopted, and the first adapter and the second adapter are movably connected to realize a flexible connection between the car body bracket and the beam, and the car body bracket can flexibly float relative to the beam, and the structure is simple.

[0012] Preferably, the first adapter includes a first connection seat and an adapter bushing, and 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 and 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 onto the outside of the adapter shaft.

[0013] In this application, the above structural form is adopted, and the adapter bushing is sleeved onto the outside of the adapter shaft, and the rotary connection between the adapter shaft and the adapter bushing realizes the movable connection between the first adapter and the second adapter. The rotary connection can rotate without being restricted, has sufficient rigidity, and can withstand bending moments. The bracket body and the beam only transmit vertical shear forces and do not transmit bending moments, and this connection method can rotate without being restricted.

[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 a direction parallel to the beam.

[0015] In this application, a second gap is provided between the adapter shaft and the adapter bushing, and the first and second adapters have a second gap. The second gap can increase the floating range of the vehicle body bracket along the width direction of the vehicle body, realize vertical floating of the vehicle body bracket, improve the buffering capacity between the vehicle body bracket and the beam, and reduce the impact between the vehicle body bracket and the beam. The above structure can provide greater buffering force and allow the beam assembly to recover more quickly after an impact. Furthermore, a first gap is provided between the first and second adapters, allowing floating along the length of the vehicle body. When the vehicle speed suddenly changes, the bracket body moves into the first gap, and 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 deformation of the vehicle body bracket. Furthermore, such a configuration is advantageous not only for attaching the first adapter or the second adapter, but also for removing the first adapter from the second adapter, which is advantageous for maintenance of the vehicle body bracket.

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

[0017] In the present application, the outside of the adapter shaft is sleeved in a flexible sleeve, and this structure is advantageous for attaching the first adapter or the second adapter; when the vehicle body bracket and the beam are subjected to an impact, the flexible sleeve deforms to absorb the impact between the vehicle body bracket and the beam, and the flexible sleeve enhances the buffering capacity between the first adapter and the second adapter.

[0018] Preferably, the flexible connector further includes a press sleeve, the press sleeve being disposed between the flexible sleeve and the adapter bushing, and the press sleeve being pressed against the adapter bushing to be fitted thereto.

[0019] In the present application, the flexible connector further includes a pressing sleeve, which is pressed onto the adapter bushing to be fitted thereto, thereby further pressing the flexible sleeve and enhancing the attachment stability of the flexible sleeve.

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

[0021] In the present application, an elastic pad is provided on the outside of the adapter shaft and / or on the side of the second connector facing the adapter shaft, which increases the buffering capacity 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, thereby reducing hard impact between the vehicle body bracket and the beam.

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

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

[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 movement of the bracket body toward the beam.

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

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

[0027] In this application, at least two of the flexible connectors are provided on each side of the bracket body, which facilitates assembly and disassembly of the vehicle body bracket, and the two flexible connectors increase 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, which greatly improves the buffering range and buffering capacity between the vehicle body bracket and the beam.

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

[0029] In this application, the vehicle body bracket for mounting the battery pack can fully utilize the space between the two beams of the electric vehicle and the vertical space below the beams, and when the electric switching device removes the battery pack, the vehicle body bracket can be placed inside the beams, thereby saving space.

[0030] Preferably, the bracket body includes two vertical beams, each of which is connected to the corresponding beam by the flexible connector, and each of the vertical beams includes a horizontal mounting plate, a vertical connecting plate, and a reinforcing rib plate, the flexible connector is provided on the horizontal mounting plate, the vertical connecting plate is connected to one side of the horizontal mounting plate, and the reinforcing rib plate is connected to the horizontal mounting plate and the vertical connecting plate, respectively.

[0031] In this application, the flexible connector is provided on the horizontal mounting plate to facilitate installation of the flexible connector, and the vertical connecting plate is connected to one side of the horizontal mounting plate to facilitate connection of the vertical beam with other components and enhance the structural strength of the vertical beam. Furthermore, the reinforcing rib plate is connected to the horizontal mounting plate and the vertical connecting plate respectively to further enhance the structural strength of the vertical beam.

[0032] Preferably, the bracket body further includes a reinforcing cross beam, the reinforcing cross beam being disposed between the two vertical beams, and both ends of the reinforcing cross beam being connected to the corresponding vertical connecting plate.

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

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

[0035] In this application, the edge of the horizontal mounting plate facing the vertical connecting plate is bent upward to form a first flange, thereby improving the bending resistance of the horizontal mounting plate, and the first flange, horizontal mounting plate, and vertical mounting plate form a square-shaped groove, greatly improving the reliability of the connection between the flexible connector and the vehicle body bracket and beam. The edge of the vertical connecting plate facing away from the horizontal mounting plate is folded back horizontally to form a second flange, which improves the bending resistance of the horizontal mounting plate and is advantageous for improving the structural strength of the connection between the reinforcing cross beam and the vertical beam.

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

[0037] In this application, the provision of wire grooves can facilitate the placement of cables and provide effective protection for the cables.

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

[0039] In the present application, a connector bracket for mounting the vehicle end connector (e.g., a vehicle end electrical connector) is further provided on the vehicle body bracket, facilitating connection between the electrical connector on the battery pack and the vehicle end electrical connector.

[0040] Preferably, the connector bracket is provided with positioning holes for inserting positioning pins of an electrical switching device.

[0041] In this application, the positioning hole is provided at the bottom of the connector bracket, which allows the positioning pillar of the electrical switching device to be easily inserted from bottom to top, and further fixes the position of the electrical switching device, thereby ensuring accurate alignment between the electrical switching device and the battery pack. This ensures that no relative displacement occurs between the electrical switching 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 this application, by installing a first sensor on the connector bracket, the first sensor detects whether the positioning pin is inserted into the predetermined position, ensuring that the insertion of the positioning pin is accurate and reliable, and improving safety during electrical replacement of the electrical replacement device.

[0044] Preferably, the vehicle body bracket further includes a locking mechanism that is fitted to a locking member of the battery pack to lock or unlock the battery pack.

[0045] In the present application, the vehicle body bracket includes a locking mechanism, so that the battery pack is connected to the vehicle body bracket by the locking mechanism and ensures that the battery pack is locked onto the vehicle body bracket, and when the battery pack needs to be replaced, the locking mechanism is unlocked and the battery pack is removed from the vehicle body bracket.

[0046] Preferably, the vehicle body bracket further includes a detection assembly for detecting whether the locking mechanism is locked in place and whether it is unlocked, the detection assembly including a second sensor and an identification member, the identification member being provided on the locking mechanism and the second sensor being provided on the bracket body, the position of the second sensor corresponding to the position of the identification member when the locking mechanism is in the locked state.

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

[0048] The electric vehicle includes a vehicle body bracket for mounting the battery pack, and the vehicle body bracket for mounting the battery pack is connected to a beam of the electric vehicle.

[0049] In this application, a flexible connection is achieved between the body bracket and the beam using a flexible connector, which can reduce the inertial impact between the beam and the bracket body while the vehicle is in operation compared to the rigid connection between the body bracket and the beam bracket in current technology, and the flexible connector provides a buffer for the inertial impact between the beam and the bracket body, thereby preventing deformation of the body bracket and damage to the inside of the battery pack attached to the body bracket due to impact, thereby extending the service life of the battery pack and reducing the cost of the finished vehicle. The use of a flexible connection makes it easy to replace the battery pack on the body bracket and reduces the requirements for positional accuracy of the body bracket when parking, and the use of a flexible connection makes it easy to install and remove the body bracket, facilitating maintenance of the body bracket.

[0050] The above-mentioned preferable conditions can be arbitrarily combined in accordance with common knowledge in the art, that is, each preferable embodiment of the present application can be obtained.

[0051] The beneficial technical effects of this application are that the body bracket and the beam are flexibly connected by a flexible connector, which reduces the inertial impact between the beam and the bracket body while the vehicle is in operation compared to the rigid connection between the body bracket and the beam in current technology, and the flexible connector provides a buffer for the inertial impact between the beam and the bracket body, thereby preventing deformation of the body bracket and damage to the inside of the battery pack attached to the body bracket due to impact, thereby extending the service life of the battery pack and reducing the cost of the finished vehicle. The use of a flexible connection makes it easy to replace the battery pack on the body bracket, reducing the requirements for positional accuracy of the body bracket when parking, and the use of a flexible connection makes it easy to install and remove the body bracket, facilitating maintenance of the body bracket. [Brief explanation of the drawings]

[0052] [Figure 1] 1 is a schematic perspective view of an electric vehicle according to an embodiment of the present invention; [Figure 2] 1 is a structural schematic diagram of a connection between a vehicle body bracket and a beam in one embodiment of the present application. [Figure 3] 1 is a schematic perspective view of a flexible connector according to an embodiment of the present invention; [Figure 4] 1 is a cross-sectional view of a flexible connector according to an embodiment of the present invention. [Figure 5] 1 is a schematic diagram of a partial structure of a vehicle body bracket in one embodiment of the present application. [Figure 6] 1 is a schematic diagram of an attachment structure for a locking mechanism and a second sensor in one embodiment of the present application. [Figure 7] 1 is a schematic perspective view of a lock base according to an embodiment of the present invention; [Figure 8] 1 is a schematic perspective view of a connector bracket portion in one embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0053] The present application will now be more clearly and completely explained with reference to the following preferred embodiments and the accompanying drawings.

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

[0055] The body bracket 2 and the beam 1 are flexibly connected by a flexible connector 21, which reduces the inertial impact between the beam 1 and the bracket body 20 while the vehicle is in operation compared to the rigid connection between the body bracket 2 and the beam 1 in current technology, and the flexible connector 21 buffers the inertial impact between the beam 1 and the bracket body 20, preventing deformation of the body bracket 2 and damage to the inside of the battery pack attached to the body bracket 2 due to impact, extending the service life of the battery pack and reducing the cost of the finished vehicle. The use of a flexible connection makes it easy to replace the battery pack on the body bracket 2 and reduces the requirements for positional accuracy of the body bracket 2 when parking, and the use of a flexible connection makes it easy to attach and detach the body bracket 2 and facilitates maintenance of the 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. A flexible connector 21 is provided between the bracket body 20 and at least one beam 1. The flexible connector 21 is arranged so that the bracket body 20 can move relative to the corresponding beam 1.

[0057] The body bracket 2 and the beam 1 are flexibly connected by a flexible connector 21, which can reduce the inertial impact between the beam 1 and the bracket body 20 while the vehicle is in operation, and the flexible connector 21 provides a buffer for the inertial impact between the beam 1 and the bracket body 20, thereby preventing deformation of the body bracket 2. The flexible connection reduces the requirements for positional accuracy of the body bracket 2 when parking. The flexible connection makes it easy to install and remove the body bracket 2, and facilitates maintenance of the body bracket 2.

[0058] 1 and 2, in this embodiment, a flexible connector 21 is provided between each of the bracket main body 20 and the two beams 1, and the flexible connectors 21 are arranged to allow the bracket main body 20 to move relative to the corresponding beam 1. In this embodiment, a flexible connector 21 is provided on both sides of the connection between the bracket main body 20 and the beam 1, increasing the buffer area between the vehicle body bracket 2 and the beam 1 and improving the impact resistance of the vehicle body bracket 2. In another embodiment, the flexible connector 21 may be installed on one side of the bracket main body 20 that connects to the beam 1, and one side of the bracket main body 20 is fixedly connected to the beam 1 by a fastener (e.g., a bolt) and the other side is flexibly connected to the beam 1, thereby also achieving buffering of inertial impact. The number and installation positions of the flexible connectors 21 can be specified as needed in practice, 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, which facilitates assembly and disassembly of the vehicle body bracket 2, and the two flexible connectors 21 increase the reliability of the connection between the bracket body 20 and the beam 1. At least two flexible connectors 21 are provided on each side of the beam 1, which greatly improves the buffering range and buffering capacity between the vehicle body bracket 2 and the beam 1. In another embodiment, the bracket body 20 is provided with flexible connectors 21 between each of the two beams 1, 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 each side of the beam 1, which further improves the buffering range and buffering capacity between the vehicle body bracket 2 and the beam 1.

[0060] In this embodiment, as shown in Figures 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 another embodiment, 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 car body bracket and the beam is realized, and the car body bracket can flexibly float relative to the beam, with a simple structure.

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

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

[0065] The above structural configuration, in which the adapter bushing 2112 is sleeved onto the adapter shaft 2122 and movably connected to the adapter shaft 2122, allows the pivoting connection to rotate without constraint, has sufficient rigidity to withstand bending moments, and the bracket body and beam transmit only vertical shear forces, not bending moments, allowing this connection to rotate without constraint. Furthermore, if the inertial forces acting on both ends of the body bracket 2 are different in magnitude or direction, the body bracket 2 will rotate around the beam 1 due to the inertial forces, preventing damage to the battery pack caused by the inertial forces and extending the service life of the battery pack. The body bracket 2 prevents the adapter bushing 2112 from colliding with the vehicle beam 1 during rotation and reduces the magnitude of the inertial forces acting on the body bracket 2 during rotation, allowing the body bracket 2 to return to its normal position more quickly.

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

[0067] The second gap 3 is provided between the adapter shaft 2122 and the adapter bushing 2112, and between the first adapter 211 and the second adapter 212. The second gap 3 increases the floating range of the vehicle body bracket 2 along the vehicle body width direction, allows the vehicle body bracket 2 to float vertically, improves the buffering capacity between the vehicle body bracket 2 and the beam 1, and reduces the impact between the vehicle body bracket 2 and the beam 1. The above structural form also provides greater buffering force, allowing the beam assembly to recover more quickly after an impact. The second gap 3 is also advantageous for installation and removal between the adapter shaft 2122 and the adapter bushing 2112.

[0068] Additionally, a first gap 4 is defined between the first adapter 211 and the second adapter 212 in a direction parallel to the beam 1. Specifically, the axial distance between the ears at both ends of the first adapter 211 is greater than the length of the adapter bushing 2112, forming the first gap 4. In this embodiment, the maximum value of the first gap 4 in the axial direction of the adapter shaft 2122 is 5 mm or less. The first gap 4 defined between the first adapter 211 and the second adapter 212 allows for floating along the vehicle body length. When the vehicle speed suddenly changes, the bracket body 20 moves within the first gap. 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 deformation of the vehicle body bracket 2. In addition, such a configuration is advantageous for attaching the first adapter 211 or the second adapter 212, as well as for removing the first adapter 211 and the second adapter 212 from each other, and is advantageous for maintenance of the vehicle body bracket 2.

[0069] 4, in the first embodiment, the flexible connector 21 further includes a flexible sleeve 31, which is disposed between the adapter shaft 2122 and the adapter bushing 2112. In this embodiment, the outer side of the adapter shaft 2122 is fitted into the flexible sleeve 31, which is advantageous for mounting the first adapter 211 or the second adapter 212. When the vehicle body bracket 2 and the beam 1 are subjected to an impact, 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 capacity between the first adapter 211 and the second adapter 212.

[0070] Specifically, the flexible sleeve 31 is made of an elastic material, and more specifically, the flexible sleeve 31 may be, but is not limited to, a rubber sleeve. In this embodiment, a movable connection between the adapter bushing 2112 and the adapter shaft 2122 is realized by 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 relative to the beam 1.

[0071] Furthermore, a rubber sleeve is fitted around the adapter shaft 2122 to fill the second gap 3, and the inner and outer sides of the rubber sleeve abut against the adapter shaft 2122 and the adapter bushing 2112, respectively. Due to the frictional force, there is no relative displacement between the rubber sleeve and the adapter shaft 2122 or between the rubber sleeve and the adapter bushing 2112. 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 with the corresponding vehicle body bracket 2 and beam 1, respectively, and the action of the rubber sleeve prevents relative rotation between the adapter bushing 2112 and the adapter shaft 2122. When the rubber sleeve is pressed by the force, distortion occurs in the direction of the force, thereby realizing a buffering effect between the adapter bushing 2112 and the adapter shaft 2122, reducing the impact force and enabling the vehicle body bracket 2 to smoothly float relative to the beam 1. The direction of the force can be vertical, parallel to the vehicle width direction, or any direction along the circumferential direction of the adapter axis 2122, and the rubber sleeve can absorb inertial impact in any direction along the circumferential direction of the adapter axis 2122 between the beam 1 and the bracket body 20 during operation, providing a high cushioning effect.

[0072] 3 and 4, the flexible connector 21 further includes a press sleeve 32, which is provided between the flexible sleeve 31 and the adapter bushing 2112, and is pressed onto the adapter bushing 2112 to engage with it. The flexible connector 21 further includes a press sleeve 32, which is pressed onto the adapter bushing 2112 to engage with it, and by further pressing the flexible sleeve 31, the attachment stability of the flexible sleeve 31 can be improved.

[0073] Specifically, the retaining sleeve 32 can be made of, but is not limited to, a metal material, and preferably, the retaining sleeve 32 is a steel sleeve. In this embodiment, the retaining sleeve 32 is press-fitted onto the adapter bushing 2112, and the adapter bushing 2112, the retaining sleeve 32, the rubber sleeve, and the adapter shaft 2122 are press-fitted together, ensuring that the flexible sleeve 31 does not rotate or move relative to the adapter shaft 2122 and the adapter bushing 2112. No relative displacement occurs between the adapter bushing 2112, the retaining sleeve 32, the flexible sleeve 31, and the adapter shaft 2122, effectively ensuring the reliability of the stable installation of the flexible sleeve 31. This ensures that the flexible sleeve 31 receives a more stable force when the vehicle body bracket 2 and the beam 1 impact each other, and that the flexible sleeve 31 stably absorbs the impact between the vehicle body bracket 2 and the beam 1. Furthermore, if the degree of pressure between the pressure sleeve 32 and the adapter bush 2112 is such that no distortion occurs in the rubber sleeve, there is no need for any relative displacement to occur between the adapter bush 2112, pressure sleeve 32, rubber sleeve, and adapter shaft 2122, and this embodiment is not particularly limited.

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

[0075] Elastic pads are provided on the outside of the adapter shaft 2122 and / or on the side of the second adapter 212 facing the adapter shaft 2122, which increase the cushioning 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, thereby reducing hard impacts between the vehicle body bracket 2 and the beam 1.

[0076] In another preferred embodiment, the flexible connector 21 further includes a sliding bearing, which is provided between the adapter shaft 2122 and the adapter bushing 2112 .

[0077] The sliding bearing is provided between the adapter shaft 2122 and the adapter bushing 2112, which is advantageous in improving the smoothness of rotation between the adapter shaft 2122 and the adapter bearing 2122. Furthermore, the operation of the sliding bearing is stable, reliable, and noiseless. Under liquid lubrication conditions, the sliding surfaces are separated by the lubricating oil, eliminating direct contact, which can greatly reduce friction loss and surface wear, and the oil film also has a certain vibration-absorbing ability.

[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 movement of the bracket body 20 toward the beam 1. Specifically, the stopper block can be made using an elastic material, such as rubber, but is not limited to this.

[0079] The stopper block can limit the movement of the body bracket 2 within a preset range, improve the reliability of the distance between the body bracket 2 and the beam 1, and prevent the body bracket 2 from floating too much and colliding hard with the beam 1. It can also prevent a direct impact between the body bracket 2 and the beam 1 caused by a failure of the flexible connector 21, and effectively protect the 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 fully utilize the space between the two beams 1 of the electric vehicle 100 and the vertical space below the beam 1, so that when the electric switching device removes the battery pack, the vehicle body bracket 2 can be placed inside the beam 1, thereby saving space.

[0081] In another embodiment, the bracket body 20 is connected to the outside of the beam 1 by the flexible connector 21, thereby realizing utilization of the space outside the beam 1. When the bracket body 20 is installed to be located outside the beam 1, the flexible connector 21 and the bracket body 20 are both provided on the outside of the beam 1, and the bracket body 20 is connected to the outer wall of the beam 1 by the flexible connector 21. The specific position where the bracket body 20 is connected on the beam 1 can be specifically selected according to practical needs, and this embodiment is not particularly limited.

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

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

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

[0085] A reinforcing cross beam 23 is further provided on the bracket body 20, and 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 corresponding vertical connecting plates 222. The above overall structure enhances the overall structural strength of the bracket body 20 and improves the bracket body 20's ability to resist vehicle body impact.

[0086] In this embodiment, the other edge of the horizontal mounting plate 221 facing the vertical connecting plate 222 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 other edge of the horizontal mounting plate 221 facing the vertical connecting plate 222 is bent upward to form a first flange 2211, which improves the bending resistance of the horizontal mounting plate 221, and the first flange 2211, horizontal mounting plate 221, and vertical connecting plate 222 form a square-shaped groove, which greatly improves the reliability of the connection between the flexible connector 21 and the vehicle body bracket 2 and beam 1. The edge of the vertical connecting plate 222 facing away from the horizontal mounting plate 221 is folded back horizontally to form a second flange 2222, which improves the bending resistance of the vertical connecting plate 222 and can connect the reinforcing cross beam 23, which is advantageous to improving the structural strength of the connection between the reinforcing cross beam 23 and the vertical beam 22.

[0089] In addition, the flexible connector 21 and the vehicle body bracket 2 having the flexible connector 21 in the above embodiment can be implemented independently in practice, and the above 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 used to place a cable.

[0091] The provision of the wire groove 201 facilitates cable placement and provides effective protection for the cable. 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 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, which is connected to the bracket main body 20, and a vehicle end connector (e.g., a vehicle end electrical connector 241) is attached onto the connector bracket 24.

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

[0094] Specifically, the vehicle end connector may include, but is not limited to, a vehicle end connector 241 and / or a liquid-cooled connector. The vehicle end connector 241 connects to an electrical connector on the battery pack to ensure the power supply function of the battery pack. The liquid-cooled connector connects to the liquid-cooled connector on the battery pack, and the liquid-cooled connectors connect the cooling system to the liquid-cooled connector on the battery pack end, thereby cooling the battery in the battery pack.

[0095] In addition, 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 embodiment is not particularly limited.

[0096] In this embodiment, the connector bracket 24 is provided with positioning holes 242 into which positioning pins on the electrical switching device are inserted.

[0097] The bottom of the connector bracket 24 is provided with a positioning hole 242 into which a positioning post on the power supply exchange device is inserted. Specifically, the positioning hole 242 penetrates the bottom of the connector bracket 24, allowing the positioning post of the power supply exchange device to be easily inserted from bottom up and further fixing the position of the power supply exchange device, thereby ensuring accurate alignment between the power supply exchange device and the battery pack. This ensures that no relative displacement occurs between the power supply exchange device 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.

[0098] In the first embodiment, as shown in FIG. 8, a first sensor 2421 is further provided on the connector bracket 24, which detects whether the positioning pin is inserted into the predetermined position, thereby ensuring that the insertion of the positioning pin is accurate and reliable, and improving safety during the electrical replacement of the electrical replacement device.

[0099] A first sensor 2421 is installed on the connector bracket 24, and the first sensor 2421 can detect whether the locating pin is inserted into the predetermined position, thereby improving safety during the electrical replacement process of the electrical switching device. Furthermore, the first sensor 2421 can be, but is not limited to, a Hall sensor. A magnetic steel is installed on the locating pin, and the Hall sensor can detect the magnetic steel on the locating pin to determine whether the locating pin is in the predetermined position. When the locating pin is separated from the locating hole 242, the Hall sensor cannot detect the signal from the magnetic steel, further determining that the electrical switching device is separated from the vehicle body bracket 2.

[0100] In addition, the vehicle body bracket 2 having the positioning hole 242 in the above embodiment can be used alone in practice, and the above embodiment is not particularly limited.

[0101] 5 and 7, in the first embodiment, the vehicle body bracket 2 further includes a locking mechanism 25, which engages with a locking member of the battery pack to lock or unlock the battery pack. The locking mechanism is provided on the bracket body 20, and the battery pack is connected to the vehicle body bracket 2 by the locking mechanism 25 to ensure that the battery pack is locked onto the vehicle body bracket 2. When the battery pack needs to be replaced, the locking mechanism 25 is released and the battery pack is removed from the vehicle body bracket 2.

[0102] In the first embodiment, the locking mechanism 25 includes a lock base 251, one end of which is connected to the bracket body 20 and the other end of which extends downward from the bracket body 20. The lock base 251 has an opening downward and a slide extending from the opening. The opening is used for allowing a locking shaft on a battery pack to enter and exit the slide, and the opening and the slide pass through the lock base 251 along the axial direction of the locking shaft. The lock base 251 is mounted on the bracket body 20, and the opening of the lock base 251 is downward. The battery box enters the slide through the downward opening, thereby locking the battery box into the slide. This prevents the battery box from entering the slide from the side of the lock base 251 and prevents the locking shaft from slipping out from one side of the lock 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 which are exposed to the slide and connected to the battery pack, so that the middle part of the locking shaft is engaged with the slide and both ends of the locking shaft receive the biasing force of the battery box, which further improves the uniformity of the force received by the locking shaft and prevents the locking shaft from slipping out from one side of the lock base 251, thereby improving the safety of the battery box lock.

[0104] In the first embodiment, the locking mechanism 25 further includes a lock bolt 252 and a lock link 253. The lock bolt 252 is pivotally mounted on the lock base 251 and can swing within the receiving groove and the slide to connect or disconnect the slide. The lock link 253 acts on the lock bolt 252, driving it to swing. The lock bolt 252 is mounted in the receiving groove, resulting in a compact structure and easy operation. The lock bolt 252 can lock the lock shaft on the battery pack within the slide. The lock link 253 facilitates applying force to the lock bolt 252 and is advantageous for synchronously controlling multiple lock bolts 252.

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

[0106] In addition, the locking mechanism 25 and the vehicle body bracket 2 having the locking mechanism 25 in the above embodiment can be implemented independently in practice, and the above embodiment is 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 locking mechanism 25 is locked or unlocked. The detection assembly includes a second sensor 26 and an identification member. The identification member is mounted on the locking mechanism 25, and the second sensor 26 is mounted on the bracket body 20. The position of the second sensor 26 corresponds to the position of the identification member when the locking mechanism 25 is locked. Specifically, the identification member is preferably mounted 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, and installing the detection assembly, it is possible to timely and reliably detect whether the locking mechanism 25 is locked or unlocked, which is advantageous to improving the locking reliability of the battery pack. Furthermore, the detection assembly can also detect whether the lock is unlocked and whether the unlocking is accurate and reliable.

[0108] Furthermore, the second sensor 26 may be, but is not limited to, a Hall sensor, and the identification member may be, but is not limited to, a magnetic steel. A magnetic steel is installed in the locking mechanism 25. When the locking mechanism 25 is in the locked state, the locking link 253 drops, and the magnetic steel corresponds to the Hall sensor position. The Hall sensor detects the magnetic steel and determines that the lock is in place. When the locking mechanism 25 is in the unlocked state, the locking link 253 is pushed up, and the magnetic steel moves along with the corresponding locking link 253. After the locking link 253 is pushed up, the Hall sensor detects that the magnetic steel signal is not detected, further determining that the unlock is in place.

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

[0110] The detection assembly increases the reliability of the locking mechanism 25 locking the battery pack, and ensures that the battery pack is securely fixed onto the vehicle body bracket 2.

[0111] In this embodiment, weight reduction holes are provided on the bracket body 20. The provision of the weight reduction holes reduces the weight and costs of the bracket body 20 while satisfying the structural strength requirements. Specifically, in this embodiment, weight reduction holes are provided on the reinforcing rib plates, but in other embodiments, weight reduction holes can also be provided on the longitudinal beams and reinforcing cross beams; this embodiment is not specifically limited.

[0112] Although specific embodiments of the present application have been described above, those skilled in the art should understand that these are merely examples, and the scope of protection of the present application is defined by the appended claims. Those skilled in the art may make various changes or amendments to these embodiments without departing from the principles and spirit of the present application, and all such changes and amendments will fall within the scope of protection of the present application. [Explanation of symbols]

[0113] 100...electric vehicle, 1...beam, 2...body bracket, 20...bracket body, 201...wire groove, 21...flexible connector, 211...first adapter, 2111...first connecting seat, 2112...adapter bush, 212...second adapter, 2121...second connecting 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...car end electrical connector, 242...positioning hole, 2421...first sensor, 25...locking mechanism, 251...lock base, 252...lock bolt, 253...lock link, 26...second sensor, 3...second gap, 31...flexible sleeve, 32...retaining sleeve, 4...first gap.

Claims

1. A vehicle body bracket for mounting a battery pack, The vehicle body bracket includes a bracket body and a flexible connector; The bracket bodies are respectively connected to two beams of the electric vehicle; The flexible connector is provided between the bracket body and at least one of the beams, A vehicle body bracket for mounting a battery pack, wherein the flexible connector is arranged so that the bracket body can move relative to the corresponding beam.

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

3. 3. The vehicle body bracket for attaching a battery pack according to claim 2, wherein the first adapter includes a first connection seat and an adapter bushing, and the second adapter includes a second connection seat and an adapter shaft, one of the first connection seat and the second connection seat connecting the beam and the other connecting to the bracket body, the adapter bushing connected to the first connection seat, the adapter shaft connected to the second connection seat, and the adapter bushing sleeved onto the outside of the adapter shaft.

4. a second gap between the adapter shaft and the adapter bushing; and / or 4. The vehicle body bracket for mounting a battery pack according to claim 3, further comprising a first gap between the first adapter and the second adapter along a direction parallel to the beam.

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

6. 4. The vehicle body bracket for attaching a battery pack according to claim 3, wherein the flexible connector further includes a sliding bearing, the sliding bearing being provided between the adapter shaft and the adapter bushing.

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

8. 8. The vehicle body bracket for attaching a battery pack according to claim 7, wherein the flexible connector further includes a pressing sleeve, the pressing sleeve being provided between the flexible sleeve and the adapter bushing, and the pressing sleeve being pressed against the adapter bushing to engage with it.

9. 2. The vehicle body bracket for mounting a battery pack according to claim 1, wherein 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 movement of the bracket body toward the beam.

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

11. 2. The vehicle body bracket for mounting a battery pack according to claim 1, wherein the bracket body includes two vertical beams, each of the two vertical beams being connected to the corresponding beam by the flexible connector, the vertical beams including a horizontal mounting plate, a vertical connecting plate, and a reinforcing rib plate, the flexible connector being provided on the horizontal mounting plate, the vertical connecting plate being connected to one side of the horizontal mounting plate, and the reinforcing rib plates being connected to the horizontal mounting plate and the vertical connecting plate, respectively.

12. 12. The vehicle body bracket for mounting a battery pack according to claim 11, wherein the bracket body further includes a reinforcing cross beam, the reinforcing cross beam being disposed between the two vertical beams, and both ends of the reinforcing cross beam being connected to the corresponding vertical connecting plate.

13. The other edge of the horizontal mounting plate facing the vertical connecting plate is bent upward to form a first flange; and / or 12. The vehicle body bracket for mounting a battery pack according to claim 11, wherein an edge of the vertical connecting plate away from the horizontal mounting plate is folded back horizontally to form a second flange.

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

15. 2. The vehicle body bracket for mounting a battery pack according to claim 1, further comprising a connector bracket, the connector bracket being connected to the bracket body, and a vehicle-end electrical connector being mounted to the connector bracket.

16. 16. The vehicle body bracket for mounting a battery pack according to claim 15, wherein the connector bracket is provided with positioning holes for inserting positioning pins of an electrical switching device.

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

18. 2. The vehicle body bracket for mounting a battery pack according to claim 1, further comprising a locking mechanism, the locking mechanism being fitted to a locking member of the battery pack to lock or unlock the battery pack.

19. The vehicle body bracket further includes a detection assembly that detects whether the locking mechanism is locked in place and whether it is unlocked; the detection assembly includes a second sensor and an identification member, the identification member being provided on the locking mechanism, and the second sensor being provided on the bracket body; 20. The vehicle body bracket for mounting a battery pack according to claim 18, wherein the position of the second sensor corresponds to the position of the identification member when the locking mechanism is in a locked state.

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

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