Vehicle body structure and vehicle

Abstract

This application relates to a vehicle body structure and a vehicle, wherein the vehicle body structure includes a sill beam and a battery pack. The battery pack is connected to the sill beam; the battery pack includes a battery pack crossbeam, which is fixedly connected to the sill beam. On a projection plane perpendicular to the height direction of the vehicle, the projections of the sill beam and the battery pack crossbeam partially overlap. By making the projections of the sill beam and the battery pack crossbeam partially overlap, a direct connection between the sill beam and the battery pack crossbeam can be easily achieved, enabling the transmission of forces between the battery pack and the sill beam. This eliminates the need for or minimizes the need for reinforcing members between the battery pack and the sill beam. Furthermore, to achieve the connection between the sill beam and the battery pack crossbeam, no additional connecting brackets or other structures for transition are required between them. The number of parts at the connection point between the sill beam and the battery pack is reduced, and the assembly precision requirements for the sill beam and the battery pack crossbeam are lower.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a vehicle body structure and a vehicle. Background Technology

[0002] For new energy vehicles, whether using Cell to Body (CTB) technology, Cell to Chassis (CTC) technology, or other technologies to arrange the battery pack, the battery pack is generally integrated into the vehicle body by fixing the battery pack crossbeam to the vehicle floor. Due to installation process limitations, there is an assembly gap between the battery pack and the sill beam. To meet the requirements of collision safety performance, reinforcements need to be installed between the battery pack and the surrounding sill beam and other structures to transfer forces and ensure the structural strength of the vehicle. Summary of the Invention

[0003] This application provides a vehicle body structure and a vehicle, which optimizes the connection structure of the battery pack on the vehicle body to at least partially solve the technical problem that the complex structure of the battery pack and the door sill beam is not conducive to the lightweight design of the whole vehicle.

[0004] In a first aspect, some embodiments of this application provide a vehicle body structure, including: Threshold beam; The battery pack is connected to the sill beam; The battery pack includes a battery pack crossbeam, which is fixedly connected to the sill beam. On a projection plane perpendicular to the height direction of the vehicle, the projection of the sill beam and the projection of the battery pack crossbeam partially overlap.

[0005] In some embodiments, the sill beam includes a first segment and a second segment arranged sequentially along the width direction of the vehicle. Along the height direction of the vehicle, the first segment is at least partially located below the second segment. The battery pack crossbeam is fixedly connected to the second segment, and along the width direction of the vehicle, the second segment and the battery pack crossbeam are located on the same side of the first segment.

[0006] In some embodiments, a connecting groove is defined between the first segment and the second segment, a portion of the battery pack crossbeam is inserted into the connecting groove, and the portion of the battery pack crossbeam inserted into the connecting groove is fixedly connected to the second segment.

[0007] In some embodiments, the vehicle body structure further includes: A reinforcing beam is fixedly connected to the sill beam, and along the height direction of the vehicle, the reinforcing beam is located on the side of the sill beam away from the battery pack; The reinforcing beam covers the second section along the height direction of the vehicle.

[0008] In some embodiments, the battery pack has a first through-hole that penetrates the battery pack crossbeam, and a second through-hole is provided in the second section. Along the height direction of the vehicle, the first through-hole is directly opposite the second through-hole. In the area where the first through-hole and the second through-hole are located, the battery pack crossbeam is fixedly connected to the sill beam, and the reinforcing beam covers the second through-hole.

[0009] In some embodiments, the battery pack further includes a cover having a receiving cavity, the battery pack crossbeam being located within the receiving cavity, and on the projection surface, the portion where the projections of the sill beam and the battery pack crossbeam overlap with each other at least partially overlaps with the projection of the cover.

[0010] In some embodiments, the cover includes a bottom shell portion and a cover portion that are layered along the height direction of the vehicle. Along the height direction of the vehicle, the bottom shell portion is located below the battery pack crossbeam. On the projection plane, the projection of the cover portion and the projection of the sill beam partially overlap. Along the height direction of the vehicle, the sill beam, the bottom shell, and the cover together define an clearance groove, and the clearance groove is located below the battery pack crossbeam. The vehicle body structure also includes an exhaust pipe, which is at least partially inserted into the clearance groove.

[0011] In some embodiments, the vehicle body structure further includes: A base plate is fixedly connected to the threshold beam, and at least a portion of the threshold beam is located on the periphery of the base plate; The rear crossbeam of the front seat is fixedly installed on the base plate; The front seat rear crossbeam and the battery pack crossbeam are fixedly connected, and on the projection plane, the projections of the front seat rear crossbeam and the battery pack crossbeam at least partially overlap.

[0012] In some embodiments, the vehicle body structure includes at least two sill beams, which are spaced apart along the width direction of the vehicle. The vehicle body structure also includes: A torque box is fixedly connected to one side of the floor plate along the length of the vehicle, and is located between the two door sill beams along the width of the vehicle. A connecting beam is fixedly connected to the end of the base plate away from the torsion box along the length of the vehicle, and the connecting beam is located between the two sill beams; Along the height direction of the vehicle, the battery pack is located within the inner perimeter of the overall structure formed by the torsion box, the sill beam, and the connecting beam.

[0013] In some embodiments, the connecting beam and the sill beam are integrally formed.

[0014] Secondly, this application also provides a vehicle, including a body assembly and a body structure as described above, wherein the body assembly and the sill beam are fixedly connected.

[0015] The beneficial effects of this application are as follows: by overlapping the projection of the sill beam and the projection of the battery pack crossbeam, i.e., extending the battery pack crossbeam to the position directly opposite the sill beam, a direct connection between the sill beam and the battery pack crossbeam can be easily achieved, enabling the transmission of force between the battery pack and the sill beam. This eliminates the need for or minimizes the need for reinforcing components between the battery pack and the sill beam. Furthermore, to achieve the connection between the sill beam and the battery pack crossbeam, no additional connecting brackets or other structures for transition are required. The number of components at the connection point between the sill beam and the battery pack is reduced, and the assembly precision requirements for the sill beam and the battery pack crossbeam are lower. Therefore, the vehicle body structure provided by this application, while ensuring safety, can limit the number of structures transmitting force between the sill beam and the battery pack, which is beneficial for the lightweighting of the vehicle body structure.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0019] Figure 1 This is an exploded view of the first vehicle body structure provided in the embodiments of this application; Figure 2 This is a schematic diagram of the projected outline of a portion of the second type of vehicle body structure provided in this application embodiment on the projection plane; Figure 3 This is a cross-sectional view of the third vehicle body structure provided in the embodiments of this application; Figure 4 This is a schematic diagram of a portion of the fourth vehicle body structure provided in the embodiments of this application; Figure 5 yes Figure 3 The shown is a partial sectional view of the vehicle body structure near the sleeve; Figure 6This is a schematic diagram of the fifth vehicle body structure provided in the embodiments of this application; Figure 7 This is a schematic diagram of the sixth vehicle body structure provided in the embodiments of this application.

[0020] Explanation of reference numerals in the attached figures: 100. Vehicle body structure; 110. Threshold beam; 110a. Connecting groove; 111. First section; 112. Second section; 112a. Second through hole; 120. Battery pack; 120a. First perforation; 120b. Clearance groove; 121. Battery pack crossbeam; 122. Cover; 122a. Receiving cavity; 122b. Bottom shell; 122c. Cover; 122d. Connecting part; 130, Reinforcing beam; 130a, Third perforation; 140. Threaded parts; 150, sleeve; 150a, through hole; 151, first sleeve; 152, second sleeve; 160. Floor plate; 161. Rear crossbeam of front seat; 170. Exhaust pipe; 180. Torque box; 190. Connecting beam; 191. Rear floor beam; 192. Battery sealing crossbeam; Z: Vehicle height; X: Vehicle width; Y: Vehicle length. s, projection surface; u, projection of the sill beam; v, projection of the battery pack crossbeam; w, projection of the cover. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] Reference Figure 1 As shown, some embodiments of this application provide a vehicle body structure 100, including a sill beam 110 and a battery pack 120. The sill beam 110 can be integrated with the vehicle body assembly and other structures. For example, the sill beam 110 can be fixed to the B-pillar or other structures of the vehicle body assembly by welding, threaded connection, or other means.

[0024] The battery pack 120 is connected to the door sill beam 110, meaning that the battery pack 120 and the door sill beam 110 can transmit forces. In scenarios such as vehicle collisions, the door sill beam 110 can bear the forces transmitted by the battery pack 120, providing protection for the battery pack 120 and ensuring the safety of vehicle use.

[0025] The battery pack 120 includes a battery pack crossbeam 121, which is fixedly connected to the sill beam 110. Specifically, the sill beam 110 is fixed by means of welding, threaded connection, interference fit, etc. The accompanying drawings of this application illustrate an exemplary scheme in which the sill beam 110 and the battery pack crossbeam 121 are fixed by a threaded connection. Generally, the battery pack 120 and the sill beam 110 form an indirect fixed connection, that is, the battery pack crossbeam 121 and the sill beam 110 are respectively fixedly connected to other parts of the vehicle, so that the relative positions of the battery pack 120 and the sill beam 110 are determined. Under this connection method, an additional reinforcing member needs to be provided between the sill beam 110 and the battery pack 120. The reinforcing member transmits the force between the battery pack 120 and the sill beam 110 to ensure the connection stability of the battery pack 120 and other parts of the vehicle in the event of a vehicle collision.

[0026] In the embodiments of this application, reference is made to Figure 1 and Figure 2 As shown, on the projection plane s perpendicular to the vehicle's height direction Z, the projection u of the sill beam and the projection v of the battery pack crossbeam partially overlap. Taking the vehicle placed on a horizontal plane as an example, the vehicle's height direction Z is vertical, and the projection plane s is a horizontal plane. That is, the projections of the sill beam 110 and the battery pack crossbeam 121 on the horizontal plane overlap. With this setting, the sill beam 110 and the battery pack crossbeam 121 can be connected at the locations corresponding to the overlapping areas of the sill beam projection u and the battery pack crossbeam projection v, which facilitates the implementation of connection methods such as welding and threaded connections.

[0027] By adopting the above solution, the projection u of the sill beam and the projection v of the battery pack crossbeam partially overlap, that is, the battery pack crossbeam 121 extends to the position directly opposite the sill beam 110. This facilitates the direct connection between the sill beam 110 and the battery pack crossbeam 121, enabling the transmission of force between the battery pack 120 and the sill beam 110. This eliminates the need for or minimizes the need for reinforcing members between the battery pack 120 and the sill beam 110. Furthermore, to achieve the connection between the sill beam 110 and the battery pack crossbeam 121, no additional connecting brackets or other structures for transition are required. The number of components at the connection point between the sill beam 110 and the battery pack 120 is reduced, and the assembly precision requirements for the sill beam 110 and the battery pack crossbeam 121 are lower. Therefore, the vehicle body structure 100 provided in this application, while ensuring safety, can limit the number of structures transmitting force between the sill beam 110 and the battery pack 120, which is beneficial for the lightweighting of the vehicle body structure 100.

[0028] After the vehicle body structure 100 is assembled into a vehicle, sill beams 110 are generally provided on both sides of the vehicle. Along the width direction X of the vehicle, the battery pack 120 is located inside the sill beams 110, that is, after the vehicle body structure 100 is assembled into a vehicle, the battery pack 120 is located between the two sill beams 110. In some embodiments, refer to Figure 1 , Figure 2 and Figure 3 As shown, the sill beam 110 includes a first section 111 and a second section 112 arranged sequentially along the width direction X of the vehicle. Along the height direction Z of the vehicle, the first section 111 is at least partially located below the second section 112. The battery pack crossbeam 121 is fixedly connected to the second section 112, and along the width direction X of the vehicle, the second section 112 and the battery pack crossbeam 121 are located on the same side of the first section 111. Figure 3 In the illustrated scheme, the first segment 111 is positioned on the periphery of the second segment 112, i.e., along the width direction X of the vehicle. The first segment 111 is located on the side of the second segment 112 away from the battery pack 120, so that the second segment 112 and the battery pack crossbeam 121 are positioned on the same side of the first segment 111. The second segment 112 and the battery pack crossbeam 121 can extend horizontally, facilitating connection between the second segment 112 and the battery pack crossbeam 121.

[0029] By setting the first segment 111 below the second segment 112, and placing the second segment 112 and the battery pack crossbeam 121 on the same side of the first segment 111, the second segment 112 connects the sill beam 110 to the battery pack 120, while the first segment 111 acts as a barrier around the battery pack 120. In the event of a collision with the vehicle body structure 100, the first segment 111 protects the battery pack 120, preventing it from directly bearing the impact, thus improving the safety of the vehicle body structure 100. It should be understood that due to the protection provided by the first segment 111, the battery pack 120 can be positioned at the lowest point along the vehicle's height direction (Z) while ensuring safety. This arrangement also helps to lower the height of the battery pack 120, thereby lowering the overall center of gravity of the vehicle, improving stability during driving, and minimizing or eliminating the need for the battery pack to occupy interior space, thus ensuring sufficient passenger compartment space.

[0030] For example, refer to Figure 3 and Figure 4 As shown, a connecting groove 110a can be defined between the first segment 111 and the second segment 112, and a portion of the battery pack crossbeam 121 is placed into the connecting groove 110a, so that the portion of the battery pack crossbeam 121 placed into the connecting groove 110a is fixedly connected to the second segment 112. Due to the setting of the connecting groove 110a, the part of the sill beam 110 that connects to the battery pack crossbeam 121 is concave upward in the height direction Z of the vehicle, so that the sill beam 110 can avoid the battery pack crossbeam 121. That is, in order to achieve the connection between the battery pack crossbeam 121 and the sill beam 110, only the center of gravity of a portion of the battery pack crossbeam 121 can be moved upward. Therefore, this setting achieves the connection between the sill beam 110 and the battery pack crossbeam 121 to ensure safety, while the center of gravity of the vehicle integrating the body structure 100 has a small offset in the height direction Z of the vehicle, and the center of gravity of the vehicle is kept in a low position, which is conducive to ensuring the stability of the vehicle when driving.

[0031] In some embodiments, refer to Figure 1 and Figure 3 As shown, the vehicle body structure 100 also includes a reinforcing beam 130. The reinforcing beam 130 is fixedly connected to the sill beam 110. As an example, the connection between the reinforcing beam 130 and the sill beam 110 can be welding, threaded connection, etc. Along the vehicle's height direction Z, the reinforcing beam 130 is located on the side of the sill beam 110 away from the battery pack 120. Taking the vehicle as a horizontal plane as an example, in the vehicle's height direction Z, the battery pack crossbeam 121 can be connected to the bottom of the sill beam 110, meaning the battery pack 120 is at least partially located below the sill beam 110, and the reinforcing beam 130 can be positioned above the sill beam 110.

[0032] Along the vehicle's height direction Z, the reinforcing beam 130 covers the second section 112. When the sill beam 110 and the battery pack crossbeam 121 are connected by threaded connections, welding, or other methods, holes and weld layers are inevitably required at the connection point. This connection can lead to stress concentration or reduced structural strength due to the holes. The reinforcing beam 130 enhances the structural strength of the sill beam 110. Furthermore, by covering the second section 112, the reinforcing beam 130 specifically strengthens the connection point between the sill beam 110 and the battery pack crossbeam 121, reducing the impact of stress concentration on the structural strength of the sill beam 110 and ensuring the connection stability between the sill beam 110 and the battery pack crossbeam 121.

[0033] It should be understood that the length of the reinforcing beam 130 along the length Y of the vehicle can be less than the length of the sill beam 110. That is, the setting of the reinforcing beam 130 can specifically enhance the strength of the part of the sill beam 110 connected to the battery pack crossbeam 121. Therefore, the setting of the reinforcing beam 130 can improve the structural strength of the sill beam 110 with less increase in the weight of the body structure 100, which is conducive to achieving vehicle lightweighting.

[0034] For example, refer to Figure 3 and Figure 5 As shown, the reinforcing beam 130 is, for example, a hollow beam. While using the reinforcing beam 130 to enhance the structural strength of the sill beam 110, it is also beneficial to achieve vehicle lightweighting.

[0035] In some embodiments, refer to Figure 3 and Figure 5 As shown, the battery pack 120 has a first through hole 120a that passes through the battery pack crossbeam 121. The second section 112 has a second through hole 112a. Along the vehicle's height direction Z, the first through hole 120a is directly opposite the second through hole 112a. In the area where the first through hole 120a and the second through hole 112a are located, the battery pack crossbeam 121 is fixedly connected to the sill beam 110. Specifically, for example, bolts, studs, or other parts can be inserted through the first through hole 120a and the second through hole 112a, so that the crossbeam and the battery pack crossbeam 121 are connected by a threaded connection. Along the vehicle's height direction Z, the reinforcing beam 130 covers the second through hole 112a.

[0036] exist Figure 5In the illustrated scheme, a portion of the reinforcing beam 130 is located directly above the second through hole 112a along the vehicle's height direction Z. The reinforcing beam 130 can be used to shield the bolts, studs, etc., inserted into the first through hole 120a and the second through hole 112a, reducing the possibility of the components used to connect the sill beam 110 and the battery pack crossbeam 121 being damaged by other objects, which helps to ensure the connection stability of the sill beam 110 and the battery pack crossbeam 121.

[0037] exist Figure 5 In the illustrated scheme, the reinforcing beam 130 is provided with a third through hole 130a. The third through hole 130a is formed on the side of the reinforcing beam 130 near the first segment 111, and the third through hole 130a is directly opposite the second through hole 112a. Bolts, studs, etc. inserted at the second through hole 112a can be inserted into the third through hole 130a, so that the reinforcing beam 130 can avoid the bolts, studs, etc. inserted at the second through hole 112a, which is beneficial to limit the volume of the overall structure composed of the threshold beam 110 and the reinforcing beam 130.

[0038] For example, refer to Figure 3 As shown, the vehicle body structure 100 also includes a threaded component 140 and a sleeve 150. The threaded component 140 passes through the first through hole 120a and the second through hole 112a. That is, the threaded component 140 is the stud, bolt and other parts mentioned above used to connect the sill beam 110 and the battery pack crossbeam 121. The sleeve 150 passes through the first through hole 120a. The sleeve 150 has a through hole 150a for inserting the threaded component 140. That is, in actual application, the threaded component 140 can be inserted into the sleeve 150. The sleeve 150 can be used to separate the threaded component 140 from the inner wall of the first through hole 120a to reduce collisions.

[0039] Reference Figure 3 and Figure 5 The battery pack crossbeam 121 can be a hollow beam, which is beneficial to the vehicle's lightweight design. This allows the battery pack crossbeam 121 to have two layered parts in the vehicle's height direction Z. The first through hole 120a passes through these two parts. Correspondingly, the body structure 100 includes two sleeves 150, namely the first sleeve 151 and the second sleeve 152. The first sleeve 151 and the second sleeve 152 are respectively installed on the two layered parts of the battery pack crossbeam 121 in the vehicle's height direction Z, and the first sleeve 151 and the second sleeve 152 are nested together. The sleeves 150 can guide the movement of the threaded part 140 during the assembly of the threaded part 140 onto the battery pack crossbeam 121, which can help the threaded part 140 pass smoothly through the first through hole 120a and facilitate the assembly operation.

[0040] In some embodiments, refer to Figure 1 and Figure 2As shown, the battery pack 120 also includes a cover 122, which is at least a portion of the outer shell of the battery pack 120 used to protect the battery cells (not shown in the figure). The cover 122 has a receiving cavity 122a, in which the battery cells of the battery pack 120 are placed. The battery pack crossbeam 121 is located in the receiving cavity 122a. The battery pack crossbeam 121 can be fixed to the cover 122 by welding, threaded connection, or other means, or the battery pack crossbeam 121 and the cover 122 can be integrally formed, so that after the battery pack crossbeam 121 is fixedly connected to the sill beam 110, the cover 122 and the battery cells in the receiving cavity 122a can be fixed to the sill beam 110.

[0041] In this configuration, on the projection surface s, the overlapping portion of the projection u of the sill beam and the projection v of the battery pack crossbeam at least partially overlaps with the projection w of the cover. That is, the cover 122 can cover the portion of the battery pack crossbeam 121 that connects to the sill beam 110, providing protection for the connection between the battery pack crossbeam 121 and the sill beam 110, or for components used to directly connect the battery pack crossbeam 121 and the sill beam 110, such as the threaded part 140 mentioned above. This is beneficial to improving the stability of the connection between the battery pack crossbeam 121 and the connecting beam 190. Furthermore, this configuration is equivalent to expanding the surface area of ​​the cover 122 to cover at least a portion of the sill beam 110 in the height direction Z of the vehicle. Compared to the conventional method where the battery pack 120 is only directly fixed to the vehicle floor 160, this is beneficial to increasing the volume of the receiving cavity 122a, providing convenience for accommodating and arranging components inside the battery pack 120.

[0042] It should be understood, and referenced Figure 5 As shown, with the aforementioned first through hole 120a provided, the first through hole 120a can pass through the cover 122, which facilitates the connection of the battery pack crossbeam 121 and the sill beam 110 during assembly.

[0043] For example, refer to Figure 1 and Figure 3 As shown, the cover 122 includes a bottom shell portion 122b and a cover portion 122c arranged in layers along the height direction Z of the vehicle. Along the height direction Z, the bottom shell portion 122b is located below the battery pack crossbeam 121. Correspondingly, a receiving cavity 122a is at least partially formed above the bottom shell portion 122b. The cover portion 122c is located around the battery pack crossbeam 121, allowing the battery cells and other structures of the battery pack 120 to be mounted above the bottom shell portion 122b. The bottom shell portion 122b and the cover portion 122c can provide protection for the battery pack crossbeam 121, the battery cells of the battery pack 120, etc. On the projection plane s, the projection of the cover portion 122c partially overlaps with the projection u of the sill beam, meaning that the cover portion 122c is a structure on the cover 122 specifically used to protect the portion of the battery pack crossbeam 121 connected to the sill beam 110. It should be understood that, referring to… Figure 3As shown, the cover portion 122c and the bottom shell portion 122b are arranged in layers in the height direction Z of the vehicle, and the two are connected by the connecting portion 122d shown in the figure.

[0044] Among them, reference Figure 3 As shown, along the vehicle's height direction Z, the sill beam 110, the bottom shell portion 122b, and the cover portion 122c together define a clearance groove 120b, and the clearance groove 120b is located below the battery pack crossbeam 121. The formed clearance groove 120b can be used to accommodate some components, such as the exhaust pipe 170 of the body structure 100, which can be at least partially placed in the clearance groove 120b. It should be understood that since the cover portion 122c and the bottom shell portion 122b are arranged in layers along the vehicle's height direction Z, The bottom wall of the clearance groove 120b (i.e., the wall surface of the cover portion 122c forming the clearance groove 120b) is higher than the bottom shell portion 122b in the height direction Z of the vehicle. This allows at least a portion of the exhaust pipe 170 to be located above the bottom shell portion 122b in the height direction Z of the vehicle, which helps to reduce the possibility of the vehicle colliding with external debris such as stones when driving. Furthermore, this arrangement does not require additional overall raising of the height of structures such as the sill beam 110, which helps to limit the height of the vehicle's center of gravity.

[0045] In some embodiments, refer to Figure 3 As shown, the sill beam 110 is fixedly connected to the base plate 160 of the vehicle body structure 100. The sill beam 110 is connected to the base plate 160 by means of welding, threaded connection, integral molding, etc., and at least a portion of the sill beam 110 is located on the periphery of the base plate 160. The battery pack crossbeam 121 can be further fixedly connected to the base plate 160. For example, the vehicle body structure 100 also includes a front seat rear crossbeam 161, and the front seat rear crossbeam 161 is fixedly installed at the base plate 160. The front seat rear crossbeam 161 is used to install the front seat of the vehicle. The front seat rear crossbeam 161 can be fixed to the base plate 160 by means of welding, threaded connection, integral molding, etc., and the front seat rear crossbeam 161 and the battery pack crossbeam 121 are fixedly connected. On the projection plane s, the projection of the front seat rear crossbeam 161 and the projection v of the battery pack crossbeam at least partially overlap.

[0046] This configuration facilitates the connection of the battery pack crossbeam 121 to the front seat rear crossbeam 161, reducing the number and size of structures used to connect the battery pack crossbeam 121 and the front seat rear crossbeam 161, thereby limiting the overall size of the vehicle body structure 100. Connecting the battery pack crossbeam 121 to the front seat rear crossbeam 161 further increases the number of connection points between the battery pack 120 and the components of the vehicle body structure 100, allowing the battery pack 120 to be stably integrated into the vehicle body structure 100. Simultaneously, the battery pack crossbeam 121 can be used to enhance the structural strength of the front seat rear crossbeam 161.

[0047] In practical applications, the vehicle body structure 100 includes at least two sill beams 110, which are spaced apart along the width direction X of the vehicle, as shown in the reference. Figure 4 As shown, a sill beam 110 can be set on each of the opposite sides of the vehicle along the width direction X. The battery pack 120 is installed between the two sill beams 110. The sill beams 110 can reduce the possibility of objects in the external environment hitting the battery pack 120.

[0048] In some embodiments, refer to Figure 4 As shown, the vehicle body structure 100 also includes a torque box 180 and a connecting beam 190. The torque box 180 is fixedly connected to one side of the floor plate 160 along the vehicle's length direction Y, and along the vehicle's width direction X, the torque box 180 is located between the two sill beams 110. In practical applications, along the vehicle's length direction Y, the torque box 180 can be installed on the side of the floor plate 160 near the front compartment of the vehicle, or on the side of the floor plate 160 near the rear compartment of the vehicle. Figure 4 The illustrated scheme shows a configuration where the torque box 180 is installed on the side of the floor plate 160 near the front compartment of the vehicle. The torque box 180 is used to improve the torsional resistance of the vehicle body. The connecting beam 190 is fixedly connected to the end of the floor plate 160 away from the torque box 180 along the length Y direction of the vehicle, and the connecting beam 190 is located between the two sill beams 110. The connecting beam 190 can be used to connect the two sill beams 110 that are spaced apart along the width X direction of the vehicle, so as to realize the transfer of force between the sill beams 110 and improve the load-bearing capacity of the vehicle body structure 100.

[0049] Along the height direction Z of the vehicle, the battery pack 120 is located within the inner perimeter of the overall structure formed by the torque box 180, the sill beam 110, and the connecting beam 190. That is, on the projection plane S, the projection of the battery pack 120 is at least partially located within the inner perimeter of the overall structure formed by the projections of the torque box 180, the sill beam 110, and the connecting beam 190. The torque box 180, the sill beam 110, and the connecting beam 190 can be used to provide protection for the battery pack 120 from its outer perimeter.

[0050] Depending on the specific type of vehicle, the connecting beam 190 can be some specific beam of the vehicle body structure 100. As a first example... Figure 6 The vehicle body structure 100 shown can be integrated into a pure electric vehicle, with the connecting beam 190, for example, a rear floor beam 191, used to support the floor of the rear seats. As a second example, Figure 7The vehicle body structure 100 shown can be integrated into a range-extended vehicle. The connecting beam 190 is, for example, a battery sealing crossbeam 192, located between the battery pack crossbeam 121 and the rear floor beam 191 along the vehicle's length direction Y. It should be understood that the above is only an example of the specific application of the connecting beam 190. The connecting beam 190 can also be other beams of the vehicle. Alternatively, when the vehicle body structure 100 is integrated into a range-extended vehicle, the connecting beam 190 can also be the rear floor beam 191. That is, the specific type of the connecting beam 190 is not limited here.

[0051] In some embodiments, the connecting beam 190 and the sill beam 110 are integrally formed, which can reduce the possibility of stress concentration at the connection between the connecting beam 190 and the sill beam 110, thereby improving the load-bearing capacity of the base plate 160.

[0052] Based on the use of the body structure 100, this application also provides a vehicle including a body assembly and the aforementioned body structure 100, wherein the body assembly and the sill beam 110 are fixedly connected. The vehicle has the beneficial effects of integrating the body structure 100, which will not be elaborated here. The vehicle is not shown in the accompanying drawings.

[0053] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0054] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0055] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0056] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A vehicle body structure, characterized in that, include: Threshold beam; The battery pack is connected to the sill beam; The battery pack includes a battery pack crossbeam, which is fixedly connected to the sill beam. On a projection plane perpendicular to the height direction of the vehicle, the projection of the sill beam and the projection of the battery pack crossbeam partially overlap.

2. The vehicle body structure according to claim 1, characterized in that, The sill beam includes a first segment and a second segment arranged sequentially along the width direction of the vehicle. Along the height direction of the vehicle, at least a portion of the first segment is located below the second segment. The battery pack crossbeam is fixedly connected to the second segment, and along the width direction of the vehicle, the second segment and the battery pack crossbeam are located on the same side of the first segment.

3. The vehicle body structure according to claim 2, characterized in that, A connecting groove is defined between the first segment and the second segment. A portion of the battery pack crossbeam is placed into the connecting groove, and the portion of the battery pack crossbeam placed into the connecting groove is fixedly connected to the second segment.

4. The vehicle body structure according to claim 2, characterized in that, The vehicle body structure also includes: A reinforcing beam is fixedly connected to the sill beam, and along the height direction of the vehicle, the reinforcing beam is located on the side of the sill beam away from the battery pack; The reinforcing beam covers the second section along the height direction of the vehicle.

5. The vehicle body structure according to claim 4, characterized in that, The battery pack has a first through hole that passes through the battery pack crossbeam. The second section has a second through hole. Along the height direction of the vehicle, the first through hole is directly opposite the second through hole. In the area where the first through hole and the second through hole are located, the battery pack crossbeam is fixedly connected to the sill beam. The reinforcing beam covers the second through hole.

6. The vehicle body structure according to any one of claims 1 to 5, characterized in that, The battery pack also includes a cover with a receiving cavity. The battery pack crossbeam is located in the receiving cavity. On the projection surface, the overlapping portions of the projections of the sill beam and the battery pack crossbeam at least partially overlap with the projection of the cover.

7. The vehicle body structure according to claim 6, characterized in that, The cover includes a bottom shell and a cover that are layered along the height direction of the vehicle. Along the height direction of the vehicle, the bottom shell is located below the battery pack crossbeam. On the projection surface, the projection of the cover and the projection of the sill beam partially overlap. Along the height direction of the vehicle, the sill beam, the bottom shell, and the cover together define an clearance groove, and the clearance groove is located below the battery pack crossbeam. The vehicle body structure also includes an exhaust pipe, which is at least partially inserted into the clearance groove.

8. The vehicle body structure according to any one of claims 1 to 5, characterized in that, The vehicle body structure also includes: A base plate is fixedly connected to the threshold beam, and at least a portion of the threshold beam is located on the periphery of the base plate; The rear crossbeam of the front seat is fixedly installed on the base plate; The front seat rear crossbeam and the battery pack crossbeam are fixedly connected, and on the projection plane, the projections of the front seat rear crossbeam and the battery pack crossbeam at least partially overlap.

9. The vehicle body structure according to claim 8, characterized in that, The vehicle body structure includes at least two sill beams, which are spaced apart along the width direction of the vehicle. The vehicle body structure also includes: A torque box is fixedly connected to one side of the floor plate along the length of the vehicle, and is located between the two door sill beams along the width of the vehicle. A connecting beam is fixedly connected to the end of the base plate away from the torsion box along the length of the vehicle, and the connecting beam is located between the two sill beams; Along the height direction of the vehicle, the battery pack is located within the inner perimeter of the overall structure formed by the torsion box, the sill beam, and the connecting beam.

10. The vehicle body structure according to claim 9, characterized in that, The connecting beam and the threshold beam are integrally formed.

11. A vehicle, characterized in that, It includes a body assembly and a body structure as described in any one of claims 1 to 10, wherein the body assembly is fixedly connected to the sill beam.

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