Vehicle body structure and vehicle

Abstract

A vehicle body structure and a vehicle. The vehicle body structure comprises: a bottom plate; and a mounting member (17), wherein the mounting member is connected to the bottom plate, and configured for mounting of a battery pack (20). In a height direction of the vehicle, the bottom plate is located on a lower side of the mounting member, such that the connection stability and firmness of the battery pack can be improved.

Description

Body structure and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on March 29, 2024, with application number 2024103921327 and titled “Body Structure and Vehicle,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of vehicles, and more specifically, to a vehicle body structure and a vehicle. Background Art

[0004] In the related art, for electric vehicles, the vehicle's battery pack, motor, and electronic control are essential structures. However, how to ensure the stable connection of the battery pack is a problem to be solved by those skilled in the art. Summary of the Invention

[0005] One purpose of the present application is to provide a technical solution for a vehicle body structure and a vehicle.

[0006] To achieve the above-mentioned object, according to a first aspect of the present application, a vehicle body structure is provided, comprising:

[0007] base plate;

[0008] A mounting member connected to the base plate and used for mounting a battery pack;

[0009] The bottom plate is located on a lower side of the mounting member in a vehicle height direction.

[0010] In some embodiments, the floor comprises a cowl.

[0011] In some embodiments, the vehicle body structure further includes a vehicle body floor, and the mounting member is connected to the vehicle body floor;

[0012] The mounting member is provided between the vehicle body floor and the dash panel in a vehicle height direction.

[0013] In some embodiments, the vehicle body structure includes an A-pillar, and the mounting member is connected to the A-pillar.

[0014] In some embodiments, the vehicle body structure further includes a vehicle body central channel, and the mounting component is connected to the vehicle body central channel.

[0015] In some embodiments, the vehicle body structure includes two mounting members, which are spaced apart in the width direction of the vehicle, and one end of each mounting member is connected to the A-pillar and the other end is connected to the central channel of the vehicle body.

[0016] In some embodiments, the vehicle body structure further includes a longitudinal beam root support plate, wherein the longitudinal beam root support plate is connected to the mounting member.

[0017] In some embodiments, in a vehicle height direction, the longitudinal beam root support plate is disposed between the front panel and the vehicle body floor.

[0018] In some embodiments, in the vehicle height direction, at least a portion of the longitudinal beam root support plate is disposed on an upper side of the mounting member.

[0019] In some embodiments, the longitudinal beam root support plate is connected to the bottom plate to form a receiving cavity, and the mounting member is at least partially disposed in the receiving cavity and connected to the longitudinal beam root support plate.

[0020] In some embodiments, in the width direction of the vehicle, a cross-sectional area of ​​an end of the longitudinal beam root support plate close to the mounting member is larger than a cross-sectional area of ​​an end of the longitudinal beam root support plate far from the mounting member.

[0021] In some embodiments, the longitudinal beam root support plate is connected to the A-pillar.

[0022] In some embodiments, in the vehicle length direction, the longitudinal beam root support plate is located on the rear side of the front panel, the front portion of the longitudinal beam root support plate is connected to the front panel, and the rear portion of the longitudinal beam root support plate is connected to the mounting member.

[0023] In some embodiments, the vehicle body structure further includes a front longitudinal beam connected to the mounting member;

[0024] The front longitudinal member is provided on the front side of the mounting member in the front-rear direction of the vehicle.

[0025] In some embodiments, the front longitudinal beam is connected to the longitudinal beam root support plate, and the front longitudinal beam is connected to the mounting member through the longitudinal beam root support plate.

[0026] In some embodiments, the vehicle body structure further includes a rocker assembly, the front longitudinal beam is connected to the front panel via a front longitudinal beam rear joint, and the front longitudinal beam rear joint is respectively connected to the rocker assembly and the A-pillar.

[0027] In some embodiments, the rocker assembly includes a rocker beam having a first layer structure and a second layer structure stacked in a vehicle body height direction, and a width of the first layer structure is greater than a width of the second layer structure in a vehicle body width direction.

[0028] In some embodiments, the first layer structure and the second layer structure form a receiving space, and the receiving space is used to receive at least part of the battery pack.

[0029] In some embodiments, at least one of the front panel and the body floor is made of carbon fiber; or, the mounting piece is made of metal; or, at least one of the front panel and the body floor is made of carbon fiber and the mounting piece is made of metal.

[0030] According to a second aspect of the present application, there is provided a vehicle comprising:

[0031] Battery pack;

[0032] The vehicle includes the above-mentioned vehicle body structure, and the battery pack is installed in the vehicle body structure.

[0033] In the technical solution of the present application, the mounting piece is used to install the battery pack, which not only facilitates the installation of the battery pack but also improves the connection stability of the battery pack.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] FIG1 is a schematic structural diagram of a battery pack and a front panel in some embodiments.

[0037] FIG2 is a schematic structural diagram of the connection between the battery pack and the front panel in some embodiments.

[0038] FIG3 is a cross-sectional view of a battery pack and a front panel in some embodiments.

[0039] FIG4 is a schematic diagram of the connection structure of the front panel, the door sill assembly, and the longitudinal beam root support plate in some embodiments.

[0040] FIG5 is a cross-sectional view of the connection structure of the front panel, the door sill assembly, and the longitudinal beam root support plate in some embodiments.

[0041] FIG6 is an exploded schematic diagram of the mounting member and the longitudinal beam root support plate in some embodiments.

[0042] FIG7 is a schematic structural diagram of the connection between the rear longitudinal beam and the rear panel, the rear longitudinal beam outer support beam, and the rear longitudinal beam inner support beam in some embodiments.

[0043] FIG8 is a cross-sectional view of the structure of the connection between the battery pack and the rear panel in some embodiments.

[0044] FIG9 is a cross-sectional view of the connection structure between the battery pack and the door sill beam in some embodiments.

[0045] 10 is a cross-sectional view of a vehicle in some embodiments.

[0046] FIG11 is a schematic structural diagram of a vehicle in some embodiments.

[0047] Explanation of reference numerals: vehicle body 10; front longitudinal beam 11; rear joint of front longitudinal beam 12; longitudinal beam root reinforcement block 13; front panel 14; bottom surface 141; first mounting point 141A; fourth mounting point 141B; vehicle body floor 15; vehicle body center channel 16; mounting member 17; longitudinal beam root support plate 18; first connection point 18a; second connection point 18b; third connection point 18c; fourth connection point 18d; battery pack 20; second mounting point 20A; front Crossbeam 20B; frame longitudinal beam 20C; A-pillar 30; side inner panel 31; side outer panel 32; front subframe 40; third mounting point 40A; door sill assembly 50; door sill beam 51; first layer structure 511; second layer structure 512; accommodating space 513; U-shaped structure 514; rear subframe 60; rear panel 70; rear longitudinal beam 71; rear longitudinal beam front joint 72; rear longitudinal beam outer support beam 73; rear longitudinal beam inner support beam 74; rear panel lower crossbeam 75. Specific embodiments

[0048] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0052] As shown in Figures 1 to 11, this embodiment provides a vehicle body structure, including a base plate and a mounting member 17. The mounting member 17 is connected to the base plate and is used to mount a battery pack 20. In the vehicle height direction, the base plate is located below the mounting member 17.

[0053] As shown in Figure 1, the vehicle body structure includes a floor and mounting member 17, which is connected to the floor. Mounting member 17 is located above the floor in the vehicle's height direction and is used to mount the battery pack 20. In other words, mounting the battery pack 20 on mounting member 17 facilitates installation of the battery pack 17 and improves the stability of the battery pack's connection.

[0054] In some embodiments, the base plate includes a dash panel 14. The dash panel 14 has a bottom surface 141 extending along the length of the vehicle body. The mounting member 17 is located on the bottom surface 141. The battery pack 20 is mounted on the mounting member 17. The battery pack 20 is connected to the bottom surface 141 of the dash panel 14, thereby improving the installation stability of the battery pack 20.

[0055] In some embodiments, the vehicle body structure further includes a vehicle body floor 15 , and the mounting member 17 is connected to the vehicle body floor 15 ; in the vehicle body height direction, the mounting member 17 is disposed between the vehicle body floor 15 and the front panel 14 .

[0056] As shown in Figure 1, the dash panel 14 has a bottom surface 141 extending along the length of the vehicle body. This bottom surface 141 extends to the vehicle floor 15, and the battery pack 20 is located on this bottom surface 141. A first mounting point 141A is provided on the bottom surface 141 for connection to the battery pack 20. A second mounting point 20A is provided on the end of the battery pack 20 proximal to the dash panel 14. The battery pack 20 is connected to the bottom surface 141 of the dash panel 14 via the first and second mounting points 141A and 20A. Because the battery pack 20 inherently possesses excellent rigidity, its placement between the vehicle floor 15 and the bottom surface 141 of the dash panel 14 integrates the battery pack 20 into the vehicle's load-transmitting structure, thereby enhancing the vehicle's mechanical properties, such as torsional and bending stiffness.

[0057] The second mounting point 20A of the battery pack 20 is disposed on a front crossbeam 20B of the battery pack 20 , on a side of the battery pack 20 close to the front of the vehicle, to facilitate connection between the battery pack 20 and the bottom surface 141 of the front panel 14 .

[0058] In some embodiments, the vehicle body structure further includes a front subframe 40 , wherein the front subframe 40 is connected to the bottom surface 141 of the front panel 14 .

[0059] In some embodiments, as shown in Figures 1 and 2 , the vehicle body structure further includes a front subframe 40, which is connected to the bottom surface 141 of the dash panel 14. The front subframe 40 has two third mounting points 40A, and two fourth mounting points 141B are provided on the bottom surface 141. The two fourth mounting points 141B are spaced apart and symmetrically arranged along the width of the vehicle. The front subframe 40 is connected to the bottom surface 141 of the dash panel 14 via the third mounting points 40A and the fourth mounting points 141B.

[0060] In some embodiments, the third mounting point 40A of the front subframe 40 is located at an end of the front subframe 40 close to the rear of the vehicle, so as to facilitate connection between the front subframe 40 and the dash panel 14 .

[0061] In some embodiments, the front subframe 40 is made of aluminum alloy and the body material is carbon fiber. Since the two dissimilar materials cannot be welded, the front subframe 40 is connected to the bottom surface 141 of the front panel 14 by bolts to ensure connection strength and stability.

[0062] In some embodiments, there is a distance L1 between the front subframe 40 and the battery pack 20 in the length direction of the vehicle body, and 15 mm ≤ L1 ≤ 20 mm.

[0063] In some embodiments, as shown in FIG. 2 , there is a distance L1 between the front subframe 40 and the battery pack 20 in the length direction of the vehicle body, wherein L1 ranges from 15 mm to 20 mm.

[0064] The spacing between the front subframe 40 and the battery pack 20 is set to 15mm-20mm based on the space available for the vehicle body 10. This prevents the front of the vehicle from transmitting collision forces to the front subframe 40. If the spacing between the front subframe 40 and the battery pack 20 is too small, the front subframe 40 could directly impact the battery pack 20 due to the collision force, causing damage. External impacts on the battery pack 20 can easily lead to electrical safety issues. Therefore, a spacing of 15mm-20mm is maintained between the front subframe 40 and the battery pack 20. This maximizes the front space available for the battery pack 20 while minimizing any impact on the battery pack 20, further improving the vehicle's range and electrical safety.

[0065] In some embodiments, the connection point between the battery pack 20 and the bottom surface 141 and the connection point between the front subframe 40 and the bottom surface 141 are at the same height in the vehicle body height direction.

[0066] In some embodiments, as shown in FIG2 , a first mounting point 141A is provided on the bottom surface 141, and a second mounting point 20A is provided on the battery pack 20. The first mounting point 141A and the second mounting point 20A form the connection point between the battery pack 20 and the bottom surface 141. A fourth mounting point 141B is also provided on the bottom surface 141, and a third mounting point 40A is provided on the front subframe 40. The third mounting point 40A and the fourth mounting point 141B form the connection point between the bottom surface 141 and the front subframe 40. The connection point between the battery pack 20 and the bottom surface 141 and the connection point between the front subframe 40 and the bottom surface 141 are located at the same height in the vehicle body height direction. In other words, they are located in the same plane in the vehicle body height direction. This structure not only facilitates the assembly of the battery pack 20 and the bottom surface 141, and the assembly of the bottom surface 141 and the front subframe 40, but also forms an effective force transmission structure.

[0067] In some embodiments, the vehicle body structure includes an A-pillar 30 , and the mounting member 17 is connected to the A-pillar 30 .

[0068] In some embodiments, the vehicle body structure further includes a vehicle body central channel 16 , and the mounting member 17 is connected to the vehicle body central channel 16 .

[0069] In some embodiments, one end of the mounting member 17 is connected to the central channel 16 of the vehicle body, and the other end is connected to the A-pillar 30 . The connector of the battery pack 20 passes through the bottom surface 141 and is connected to the mounting member 17 .

[0070] In some embodiments, one end of mounting member 17 is connected to vehicle body center tunnel 16, and the other end of mounting member 17 is connected to A-pillar 30. Furthermore, mounting member 17 is positioned at first mounting point 141A on bottom surface 141, so that the connector of battery pack 20 can pass through second mounting point 20A on battery pack 20 and connect to mounting member 17. This improves the structural strength of bottom surface 141 and the installation strength of battery pack 20.

[0071] In some embodiments, the vehicle body structure includes two mounting members 17 , which are spaced apart in the width direction of the vehicle. One end of each mounting member 17 is connected to the A-pillar 30 , and the other end is connected to the vehicle body central channel 16 .

[0072] As shown in Figures 4 and 5, the vehicle body structure includes two mounting members 17, which extend along the width of the vehicle body and are provided on the bottom surface 141. The mounting members 17 extend along the width of the vehicle body and are spaced apart along the width of the vehicle body. The provision of two mounting members 17 is conducive to achieving lightweighting of the vehicle.

[0073] In some embodiments, the bottom of one end of the mounting member 17 is connected to the bottom surface 141 of the front panel 14 , the top of one end of the mounting member 17 is connected to the vehicle body floor 15 , and the vehicle body floor 15 is connected to the vehicle body central channel 16 .

[0074] In some embodiments, mounting member 17 includes a bottom and a top. The bottom of one end of mounting member 17 is connected to the bottom surface 141 of dash panel 14, while the top of one end of mounting member 17 is connected to vehicle body floor 15. Therefore, mounting member 17 is positioned between bottom surface 141 of dash panel 14 and vehicle body floor 15. This improves the mounting strength of mounting member 17, and when the connector of battery pack 20 connects to mounting member 17 through second mounting point 20A, the connection strength of battery pack 20 is also enhanced.

[0075] As shown in Figures 3 and 5, the mounting member 17 is an inclined trapezoidal closed-section beam. The bottom of one end of the mounting member 17 is bonded to the bottom surface 141 of the front panel 14. A first mounting point 141A is set on the mounting member 17. The top of one end of the mounting member 17 is bonded to the vehicle body floor 15, and the vehicle body floor 15 is overlapped with the flange of the vehicle body central channel 16. The top and bottom of the mounting member 17 are jointly stabilized by the vehicle body central channel 16 and the vehicle body floor 15, thereby realizing the connection and force transmission function of the structural skeleton.

[0076] In some embodiments, the vehicle body structure further includes a longitudinal beam root support plate 18 , and the longitudinal beam root support plate 18 is connected to the mounting member 17 .

[0077] As shown in FIG5 , the vehicle body structure further includes a longitudinal beam root support plate 18 , wherein the longitudinal beam root support plate 18 is connected to the mounting member 17 , thereby enabling force transmission in the front-rear direction of the vehicle.

[0078] In some embodiments, the longitudinal beam root support plate 18 is disposed between the dash panel 14 and the vehicle body floor 17 in the vehicle height direction.

[0079] As shown in FIG. 5 , the longitudinal beam root support plate 18 is provided between the dash panel 14 and the vehicle body floor 17 , thereby enabling force transmission in the vehicle height direction.

[0080] In some embodiments, at least a portion of the longitudinal beam root support plate 18 is disposed on an upper side of the mounting member 17 in the vehicle height direction.

[0081] As shown in Figures 4 and 5 , in the vehicle height direction, the longitudinal beam root support plate 18 can be partially or entirely disposed above the mounting member 17. This allows for force transmission in the vehicle height direction and improves the connection stability between the longitudinal beam root support plate 18 and the mounting member 17.

[0082] In some embodiments, the longitudinal beam root support plate 18 is connected to the bottom plate to form a receiving cavity, and the mounting member 17 is at least partially disposed in the receiving cavity and connected to the longitudinal beam root support plate 18 .

[0083] As shown in Figure 4, the longitudinal beam root support plate 18 is connected to the bottom plate to form a receiving cavity. For example, the longitudinal beam root support plate 18 is connected to the front panel 14 to form a receiving cavity. The mounting member 17 is connected to the front panel 14, and the mounting member 17 is partially located inside the receiving cavity and connected to the longitudinal beam root support plate 18. This improves the installation stability of the mounting member 17, and further improves the installation strength of the battery pack 30; it also enables force transmission between the mounting member 17 and the longitudinal beam root support plate 18.

[0084] In some embodiments, in the width direction of the vehicle, the cross-sectional area of ​​the end of the longitudinal beam root support plate 18 close to the mounting member 17 is larger than the cross-sectional area of ​​the end away from the mounting member 17 .

[0085] As shown in Figure 4, in the width direction of the vehicle, the cross-sectional area of ​​the longitudinal beam root support plate 18 at the end closest to the mounting member 17 is larger than the cross-sectional area at the end further away from the mounting member 17. When the mounting member 17 transmits force to the longitudinal beam root support plate 18, the cross-sectional area at the end further away from the mounting member 17 is larger, thus increasing the area over which the force is transmitted and making the force more dispersed.

[0086] The cross-sectional area mentioned above refers to the area of ​​the cross section taken in the height direction of the vehicle.

[0087] In some embodiments, the longitudinal beam root support plate 18 is connected to the A-pillar 30 .

[0088] As shown in FIG4 , the end of the longitudinal beam root support plate 18 away from the mounting member 17 is connected to the A-pillar 30 . On the one hand, this can improve the connection strength of the A-pillar 30 . On the other hand, it can transmit force to the A-pillar 30 in the width direction of the vehicle, further dispersing the force, thereby improving the structural strength of the vehicle body structure.

[0089] In some embodiments, in the vehicle length direction, the longitudinal beam root support plate 18 is located on the rear side of the front panel 14 , the front of the longitudinal beam root support plate 18 is connected to the front panel 14 , and the rear of the longitudinal beam root support plate 18 is connected to the mounting member 17 .

[0090] As shown in Figures 5 and 6, the longitudinal beam root support plate 18 includes a first connection point 18a, a second connection point 18b, a third connection point 18c and a fourth connection point 18d. The first connection point 18a and the second connection point 18b are connected to the front panel 17, the third connection point 18c is connected to the side panel inner panel 31, and the fourth connection point 18d is connected to the longitudinal beam root reinforcement block 13.

[0091] In some embodiments, as shown in Figures 4 and 5, the bottom of the other end of the mounting member 17 is connected to the bottom surface 141 of the front panel 14, and the top of the other end of the mounting member 17 is connected to the longitudinal beam root support plate 18. Therefore, the other end of the mounting member 17 is located between the bottom surface 141 of the front panel 14 and the longitudinal beam root support plate 18. This improves the installation strength of the mounting member 17, and when the connector of the battery pack 20 passes through the second mounting point 20A and connects to the mounting member 17, the connection strength of the battery pack 20 is also improved. In addition, the other end of the mounting member 17 can transmit the force of the second mounting point 20A to the lower end of the A-pillar 30 through the longitudinal beam root support plate 18, and one end of the mounting member 17 can transmit the force to the vehicle body center channel 16, thereby achieving force dispersion.

[0092] As shown in Figures 3, 5, and 6, mounting member 17 is a closed-section, trapezoidal beam. The top surface of the other end of mounting member 17 is connected to the longitudinal beam root support plate 18, which is respectively connected to the vehicle body floor 15, the bottom surface 141 of the dash panel 14, the side panel inner panel 31, and the longitudinal beam root reinforcement block 13. As can be seen in Figure 3, the bottom of mounting member 17 is connected to the bottom surface 141 of the dash panel 14, and the top of mounting member 17 is connected to the vehicle body floor 15. These two components form a wrapping support for mounting member 17, further strengthening the force transmission path and achieving force dispersion. Mounting member 17 strengthens the structural strength and rigidity of the first mounting point 141A on the bottom surface 141 of the dash panel 14, stabilizes the front end of the vehicle body 10, enhances the torsional strength of the vehicle body floor 15, and thus strengthens the torsional rigidity of the vehicle, thereby improving the vehicle's handling performance.

[0093] In some embodiments, the vehicle body structure further includes a front longitudinal beam 11 , which is connected to the mounting member 17 ; in the front-to-rear direction of the vehicle, the front longitudinal beam 11 is disposed in front of the mounting member 17 .

[0094] As shown in FIG4 , the vehicle body structure further includes a front longitudinal beam 11 , which is connected to a mounting member 17 ; the front longitudinal beam 11 is located in front of the mounting member 17 in the vehicle front-rear direction, thereby enabling force transmission in the vehicle front-rear direction.

[0095] In some embodiments, the front longitudinal beam 11 is connected to the longitudinal beam root support plate 18 , and the front longitudinal beam 11 is connected to the mounting member 17 through the longitudinal beam root support plate 18 .

[0096] As shown in Figure 4, the front longitudinal beam 11 is connected to the longitudinal beam root support plate 18, and the front longitudinal beam 11 is connected to the mounting member 17 through the longitudinal beam root support plate 18. In the front-to-back direction of the vehicle, a force transmission path can be achieved between the front longitudinal beam 11, the longitudinal beam root support plate 18 and the mounting member 17.

[0097] In some embodiments, the vehicle body structure further includes a rocker assembly 50 , the front longitudinal beam 11 is connected to the front panel 14 via a front longitudinal beam rear joint 12 , and the front longitudinal beam rear joint 12 is respectively connected to the rocker assembly 50 and the A-pillar 30 .

[0098] In some embodiments, as shown in FIG1 , the vehicle body structure further includes a front longitudinal beam rear joint 12 , wherein the front longitudinal beam 11 is connected to the front panel 14 via the front longitudinal beam rear joint 12 , and the front longitudinal beam rear joint 12 is connected to the door sill assembly 50 and the A-pillar 30 , respectively.

[0099] The front longitudinal beam 11 and the rear longitudinal beam joint 12 are both made of aluminum alloy, while the dash panel 14 is made of carbon fiber. Because carbon fiber does not undergo plastic deformation under high loads but instead directly shatters, if the front longitudinal beam 11 and the dash panel 14 were directly connected, the front longitudinal beam 11 would transmit the collision force to the dash panel 14 after being subjected to a collision, which would put the dash panel 14 at risk of shattering. Therefore, the front longitudinal beam 11 and the dash panel 14 are connected via the rear longitudinal beam joint 12. The rear longitudinal beam joint 12 extends the dash panel 14 downward to the vehicle body floor 15, connecting it to the rocker assembly 50 and the A-pillar 30, thereby forming a front frame structure. This structure can distribute the collision force exerted on the front longitudinal beam 11 to the dash panel 14, the rocker assembly 50, and the A-pillar 30. The increased contact area reduces the magnitude of the localized force, further distributing the force of a frontal collision and reducing the risk of the dash panel 14 shattering.

[0100] In some embodiments, a rear longitudinal beam 71 is further included, wherein the rear longitudinal beam 71 is connected to a rear longitudinal beam front joint 72, and the rear longitudinal beam front joint 72 is respectively connected to a rear longitudinal beam inner support beam 74 and a rear longitudinal beam outer support beam 73, and the axes of the rear longitudinal beam inner support beam 74, the rear longitudinal beam outer support beam 73 and the rear longitudinal beam 71 intersect in pairs.

[0101] In some embodiments, as shown in Figure 7, the vehicle body structure also includes a rear longitudinal beam 71, which is connected to a rear longitudinal beam front joint 72, and the rear longitudinal beam front joint 72 is also connected to a rear longitudinal beam inner support beam 74 and a rear longitudinal beam outer support beam 73 respectively; in other words, the rear longitudinal beam 71 is connected to the rear longitudinal beam inner support beam 74 and the rear longitudinal beam outer support beam 73 through the rear longitudinal beam front joint 72.

[0102] The rear longitudinal beam 71, the rear longitudinal beam front joint 72, the rear longitudinal beam inner support beam 74, and the rear longitudinal beam outer support beam 73 are all made of aluminum alloy. The rear longitudinal beam 71 and the rear longitudinal beam front joint 72 are connected by screwing and welding, the rear longitudinal beam front joint 72 and the rear longitudinal beam inner support beam 74 are connected by screwing and welding, and the rear longitudinal beam front joint 72 and the rear longitudinal beam outer support beam 73 are connected by screwing and welding. This improves the connection strength between the rear longitudinal beam 71, the rear longitudinal beam front joint 72, the rear longitudinal beam inner support beam 74, and the rear longitudinal beam outer support beam 73, thereby improving the connection strength and force transmission between the rear end and the vehicle body 10.

[0103] As shown in Figure 7, the rear longitudinal beam 71 is connected to the rear longitudinal beam inner support beam 74 and the rear longitudinal beam outer support beam 73 via the rear longitudinal beam front joint 72. The rear longitudinal beam 71, the rear longitudinal beam inner support beam 74, and the rear longitudinal beam outer support beam 73 all form a Y-shaped structure. When the rear longitudinal beam 71 is subjected to a collision force, the collision force can be dispersed to the rear longitudinal beam inner support beam 74 and the rear longitudinal beam outer support beam 73 via the rear longitudinal beam front joint 72.

[0104] In some embodiments, the rear longitudinal beam outer support beam 73 is connected to the door sill assembly 50 , and the rear longitudinal beam inner support beam 74 is connected to the rear panel 70 .

[0105] In some embodiments, the rear longitudinal beam outer support beam 73, the rear longitudinal beam inner support beam 74, and the door sill assembly 50 are all made of aluminum alloy, and the rear panel 70 and the rear panel lower cross beam 75 are both made of carbon fiber. The rear longitudinal beam outer support beam 73 is connected to the door sill assembly 50 via bolts to enhance their connection strength, and the rear longitudinal beam inner support beam 74 is connected to the rear panel 70 via bolts to enhance their connection strength.

[0106] In some embodiments, the rear panel 70 and the rear panel lower cross beam 75 form a U-shaped cavity, and the cavity is filled with reinforced plastic. The rear panel 70, the rear panel lower cross beam 75 and the reinforced plastic are integrally formed by thermal curing.

[0107] In some embodiments, as shown in FIG8 , a U-shaped cavity is formed between the rear panel 70 and the rear panel lower cross beam 75 , and the U-shaped cavity is filled with reinforced plastic. Therefore, the rear panel 70 , the rear panel lower cross beam 75 , and the reinforced plastic are an integrated thermosetting molded part, thereby ensuring sufficient connection stability and decomposing the force of rear collision, thereby reducing the risk of passenger compartment damage.

[0108] In some embodiments, a rear subframe 60 is further included, wherein the rear subframe 60 is connected to the rear longitudinal beam outer support beam 73 , and the rear panel 70 is used to be connected to the battery pack 20 .

[0109] In some embodiments, the vehicle body structure further includes a rear subframe 60, which is connected to a rear longitudinal beam outer support beam 73. The rear subframe 60 is located below the rear longitudinal beam outer support beam 73. The side of the battery pack 20 near the rear of the vehicle is connected to the rear panel 70. Therefore, the side of the battery pack 20 near the front of the vehicle is connected to the front panel 14, and the side of the battery pack 20 near the parking space is connected to the rear panel 70. The front panel 14 and the rear panel 70 provide installation space for the battery pack 20.

[0110] In some embodiments, in the length direction of the vehicle body, there is a distance L2 between the rear subframe 60 and the battery pack 20, and the distance L2 is 30 mm ≤ L2 ≤ 40 mm.

[0111] In some embodiments, there is a distance L2 between the rear subframe 60 and the battery pack 20 in the length direction of the vehicle body, where L2 ranges from 30 mm to 40 mm.

[0112] The spacing between the rear subframe 60 and the battery pack 20 is set to only 30mm-40mm based on the space available for the vehicle body 10. This prevents the rear end of the vehicle from transmitting collision forces to the rear subframe 60. If the spacing between the rear subframe 60 and the battery pack 20 is too small, the rear subframe 60 could directly impact the battery pack 20 due to the collision force, causing damage. If the battery pack 20 is subjected to external forces, electrical safety issues could easily arise. The resulting spacing of 30mm-40mm between the rear subframe 60 and the battery pack 20 maximizes rear space for the battery pack 20 while minimizing impacts on the battery pack 20, further improving the vehicle's range and electrical safety.

[0113] In some embodiments, the battery pack 20 is connected to the rocker assembly 50 in the width direction of the vehicle body.

[0114] As shown in Figure 9, the bottom surface 141 of the dash panel 14 extends downward to the vehicle body floor 15 and connects to the left and right side sill assemblies 50, forming a front frame structure. The battery pack 20 is connected to the side sill assemblies 50 in the vehicle body width direction, thereby improving the connection strength of the battery pack 20.

[0115] In some embodiments, the rocker assembly 50 includes a rocker beam 51 . In the vehicle body height direction, the rocker beam 51 has a stacked first layer structure 511 and a second layer structure 512 . In the vehicle body width direction, the width of the first layer structure 511 is greater than the width of the second layer structure 512 .

[0116] In some embodiments, the first layer structure 511 and the second layer structure 512 form a receiving space 513 , and the receiving space 513 is used to receive at least a portion of the battery pack 20 .

[0117] In some embodiments, as shown in FIG9 , the rocker assembly 50 includes a rocker beam 51. In the vehicle body height direction, the rocker beam 51 includes a first structure 511 and a second structure 512. In the vehicle body width direction, the first structure 511 is wider than the second structure 512, thereby forming a storage space 513 between the first and second structures 511, 512. The battery pack 20 is at least partially embedded in the storage space 513. Therefore, the battery pack 20 below the vehicle body floor 15 extends to the left and right sides of the rocker assembly 50, maximizing the use of the space on both sides. This increases the volume of the battery pack 20 in the vehicle body width direction and the vehicle's range.

[0118] In some embodiments, the first layer structure 511 includes multiple U-shaped structures 514 , the second layer structure 512 includes at least one U-shaped structure 514 , and the number of U-shaped structures 514 in the first layer structure 511 is greater than the number of U-shaped structures 514 in the second layer structure 512 .

[0119] As shown in Figure 9, the first layer structure 511 includes multiple U-shaped structures 514, and the second layer structure 512 includes at least one U-shaped structure 514. Therefore, the number of U-shaped structures 514 in the first layer structure 511 is greater than the number of U-shaped structures 514 in the second layer structure 512, so an accommodating space 513 can be formed between the first layer structure 511 and the second layer structure 512.

[0120] In some embodiments, the first structure 511 includes three or four U-shaped structures 514, and the second structure 512 includes one U-shaped structure 514. The U-shaped structure 514 of the second structure 512 provides a mounting location for the battery pack 20. Providing the first and second structures 511, 512 in the U-shaped structure 514 can improve the structural strength of the sill beam 51. Thus, even when a receiving space 513 is formed between the first and second structures 511, 512, the structural strength of the sill beam 51 can still be maintained.

[0121] In some embodiments, in the width direction of the vehicle body, the inner side of the rocker beam 51 is connected to the side inner panel 31 , the outer side of the rocker beam 51 is connected to the side outer panel 32 , and the side inner panel 31 is connected to the side outer panel 32 .

[0122] In the vehicle body width direction, the side of the rocker beam 51 closer to the interior of the vehicle is connected to the side panel inner 31, and the side of the rocker beam 51 closer to the exterior of the vehicle is connected to the side panel outer 32. The side panel inner 31 and the side panel outer 32 are interlocked and enclose the rocker beam 51 to improve the structural strength of the rocker beam 51.

[0123] In some embodiments, the battery pack 20 has a frame longitudinal beam 20C, and the frame longitudinal beam 20C and the door sill beam 51 are both made of aluminum alloy. The frame longitudinal beam 20C and the door sill beam 51 are connected by bolts to improve the structural strength of the frame longitudinal beam 20C and the door sill beam 51.

[0124] In some embodiments, at least one of the dash panel 14 and the vehicle body floor 15 is made of carbon fiber.

[0125] For example, the front panel 14 can be made of carbon fiber material, and the body floor 15 can be made of carbon fiber material. Since the outer shell of the battery pack 20 is made of aluminum alloy material, the aluminum alloy material and the carbon fiber material are connected as dissimilar materials. The battery pack 20 and the bottom surface 141 of the front panel 14 are connected with bolts to ensure the connection strength and stability.

[0126] In some embodiments, the mounting member 17 is made of metal to ensure the structural strength of the mounting member 17 .

[0127] In some embodiments, at least one of the front panel 14 and the body floor 15 is made of carbon fiber, and the mounting member 17 is made of metal to ensure the connection strength between the battery pack 20 made of aluminum alloy and the front panel 14 or the body floor 15 made of carbon fiber, and to ensure the structural strength of the mounting member 17.

[0128] This embodiment further provides a vehicle, as shown in FIG. 10 and FIG. 11 , the vehicle includes a battery pack 20 and the vehicle body structure as described above, and the battery pack 20 is disposed on the vehicle body structure.

[0129] By setting the battery pack 20 on the vehicle body structure, utilizing the inherent rigidity of the battery pack 20 and adding the battery pack 20 to the force transmission structure of the entire vehicle, the battery pack 20 can improve the mechanical properties of the entire vehicle, such as torsional rigidity and bending rigidity.

[0130] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0131] References herein to "one embodiment," "an embodiment," or "one or more embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Furthermore, please note that instances of the phrase "in one embodiment" do not necessarily all refer to the same embodiment.

[0132] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0133] In the claims, any reference signs placed between brackets shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present application may be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle body structure, wherein: include: base plate; A mounting member (17), the mounting member (17) being connected to the base plate, and the mounting member (17) being used to mount a battery pack (20); In the vehicle height direction, the bottom plate is located on the lower side of the mounting member (17).

2. The vehicle body structure according to claim 1, wherein: The bottom plate includes a front panel (14).

3. The vehicle body structure according to claim 2, wherein: The vehicle body structure further includes a vehicle body floor (15), and the mounting member (17) is connected to the vehicle body floor (15); In the vehicle height direction, the mounting member (17) is arranged between the vehicle body floor (15) and the dash panel (14).

4. The vehicle body structure according to any one of claims 1 to 3, wherein: The vehicle body structure includes an A-pillar (30), and the mounting member (17) is connected to the A-pillar (30).

5. The vehicle body structure according to claim 4, wherein: The vehicle body structure further includes a vehicle body central channel (16), and the mounting member (17) is connected to the vehicle body central channel (16).

6. The vehicle body structure according to claim 5, wherein: The vehicle body structure includes two mounting members (17) arranged at intervals in the width direction of the vehicle, one end of each mounting member (17) is connected to the A-pillar (30), and the other end is connected to the vehicle body central channel (16).

7. The vehicle body structure according to claim 4, wherein: The vehicle body structure further includes a longitudinal beam root support plate (18), and the longitudinal beam root support plate (18) is connected to the mounting member (17).

8. The vehicle body structure according to claim 7, wherein: In the vehicle height direction, the longitudinal beam root support plate (18) is arranged between the front panel (14) and the vehicle body floor (17).

9. The vehicle body structure according to claim 7, wherein: In the vehicle height direction, at least a portion of the longitudinal beam root support plate (18) is arranged on the upper side of the mounting member (17).

10. The vehicle body structure according to claim 7, wherein: The longitudinal beam root support plate (18) is connected to the bottom plate to form a receiving cavity, and the mounting member (17) is at least partially disposed in the receiving cavity and connected to the longitudinal beam root support plate (18).

11. The vehicle body structure according to claim 7, wherein: In the width direction of the vehicle, the cross-sectional area of ​​the end of the longitudinal beam root support plate (18) close to the mounting member (17) is larger than the cross-sectional area of ​​the end away from the mounting member (17).

12. The vehicle body structure according to claim 7, wherein: The longitudinal beam root support plate (18) is connected to the A-pillar (30).

13. The vehicle body structure according to claim 7, wherein: In the vehicle length direction, the longitudinal beam root support plate (18) is located on the rear side of the front panel (14), the front part of the longitudinal beam root support plate (18) is connected to the front panel (14), and the rear part of the longitudinal beam root support plate (18) is connected to the mounting member (17).

14. The vehicle body structure according to claim 7, wherein: The vehicle body structure further comprises a front longitudinal beam (11), wherein the front longitudinal beam (11) is connected to the mounting member (17); In the front-rear direction of the vehicle, the front longitudinal beam (11) is arranged on the front side of the mounting member (17).

15. The vehicle body structure according to claim 14, wherein: The front longitudinal beam (11) is connected to the longitudinal beam root support plate (18), and the front longitudinal beam (11) is connected to the mounting member (17) via the longitudinal beam root support plate (18).

16. The vehicle body structure according to claim 14, wherein: The vehicle body structure further includes a door sill assembly (50), the front longitudinal beam (11) and the front panel (14) are connected via a front longitudinal beam rear joint (12), and the front longitudinal beam rear joint (12) is respectively connected to the door sill assembly (50) and the A-pillar (30).

17. The vehicle body structure according to claim 16, wherein: The threshold assembly (50) includes a threshold beam (51). In the vehicle body height direction, the threshold beam (51) has a stacked first layer structure (511) and a second layer structure (512). In the vehicle body width direction, the width of the first layer structure (511) is greater than the width of the second layer structure (512).

18. The vehicle body structure according to claim 17, wherein: The first layer structure (511) and the second layer structure (512) form an accommodation space (513), and the accommodation space (513) is used to accommodate at least a portion of the battery pack (20).

19. The vehicle body structure according to claim 3, wherein: At least one of the front panel (14) and the vehicle body floor (15) is made of carbon fiber; Alternatively, the mounting member (17) is made of metal; Alternatively, at least one of the front panel (14) and the vehicle body floor (15) is made of carbon fiber material and the mounting member (17) is made of metal material.

20. A vehicle, wherein include: Battery pack (20); The vehicle includes the vehicle body structure according to any one of claims 1 to 19, and the battery pack is provided in the vehicle body structure.

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