Vehicle body structure and vehicle

Abstract

The invention provides a vehicle body structure and a vehicle, and relates to the technical field of vehicles. The vehicle body structure comprises a doorsill beam, a battery pack and a seat cross beam; the doorsill beam is connected with the battery pack, the upper cover of the battery pack is used for forming a floor of a vehicle body structure, and the seat cross beam is fixed on the upper cover of the battery pack; a plurality of sealing parts are arranged on the doorsill beam, an avoiding opening is formed between every two adjacent sealing parts, and the end of the seat cross beam extends into the avoiding openings so that the end of the seat cross beam can be close to the doorsill beam; one side, close to the battery pack, of the sealing part is sealed with the battery pack; the side, corresponding to the receding opening and close to the upper cover of the battery pack, of the threshold beam is used for being sealed with the battery pack. According to the vehicle body structure, after the threshold beam is impacted, impact force can be transmitted to the seat cross beam, and damage to the battery pack is reduced.

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] With the development of new energy vehicles, significant progress has been made in technological advancement and market penetration in recent years. Battery technology, as a core component of electric vehicles, is also undergoing continuous innovation and optimization.

[0003] Battery pack technology is evolving from Cell-to-Pack (CTP) to Cell-to-Body (CTB) integrated battery packs. CTB technology integrates the battery pack with the vehicle body structure, reducing the independent space required for the battery pack and allowing it to fit more closely to the vehicle body, thus reducing the overall vehicle size. In existing technologies, the sill beam connects to the battery pack. To meet the sealing requirements between the sill beam and the battery pack, and to facilitate installation, a certain installation gap needs to be provided between the seat crossbeam on the battery pack and the sealing structure of the sill beam.

[0004] However, when a vehicle's sill beam is subjected to a side impact, if the sill beam cannot adequately absorb the impact force, the impact force is directly transferred to the battery pack, causing the battery pack to be squeezed and deformed, which seriously affects the safety of the battery pack. Summary of the Invention

[0005] This application provides a vehicle body structure and vehicle to solve the problem that when the sill beam of a vehicle is subjected to a side collision, and the sill beam cannot fully absorb the impact force, the impact force is directly transmitted to the battery pack, causing the battery pack to be squeezed and deformed, which seriously affects the safety of the battery pack.

[0006] On the one hand, this application provides a vehicle body structure, including a sill beam, a battery pack, and a seat crossbeam;

[0007] The sill beam is connected to the battery pack, the top cover of the battery pack is used to form the floor of the vehicle body structure, and the seat crossbeam is fixed to the top cover of the battery pack.

[0008] The sill beam is provided with a plurality of sealing portions, which are located on the side of the sill beam facing the battery pack. An clearance opening is formed between adjacent sealing portions. The end of the seat crossbeam extends into the clearance opening so that the end of the seat crossbeam is close to the sill beam. The side of the sealing portion near the battery pack is used to seal with the battery pack. The side of the sill beam corresponding to the clearance opening and close to the top cover of the battery pack is used to seal with the battery pack.

[0009] In some embodiments, the sill beam includes a sill body and a first connecting portion, the first connecting portion being connected to the side of the sill body near the battery pack, the first connecting portion being located above the battery pack, and the sealing portion being disposed on the first connecting portion.

[0010] In some embodiments, the battery pack includes a main body and a second connecting part, the second connecting part being connected to the side of the main body near the sill beam, the second connecting part being located below the first connecting part, and a plurality of bolts being provided on the second connecting part, the bolts passing through the second connecting part and connecting to the first connecting part.

[0011] In some embodiments, the connection between the first connecting portion and the bolt is offset from the clearance opening.

[0012] In some embodiments, there is an assembly gap between the seat crossbeam and the first connecting portion.

[0013] In some embodiments, the side of the first connecting portion near the battery pack is the mounting surface of the sill beam, and the side of the sealing portion near the battery pack is the sealing surface, which is flush with the mounting surface.

[0014] In some embodiments, the vehicle body structure further includes a sealing strip comprising an integrally formed straight section and a clearance section. The clearance section is located at the clearance opening and extends between the mounting surface and the top plane of the second connection portion to seal the gap between the mounting surface and the top plane of the second connection portion. The straight section is disposed between the sealing portion and the battery pack to seal the gap between the sealing portion and the battery pack.

[0015] In some embodiments, the second connecting portion has a cavity, through which the bolt connects to the first connecting portion.

[0016] In some embodiments, the battery pack further includes a reinforcing portion connected between the main body and the second connecting portion, and a buffer cavity is formed between the reinforcing portion and the main body to buffer the impact on the main body.

[0017] On the other hand, this application provides a vehicle including the above-described body structure.

[0018] This application provides a vehicle body structure and a vehicle. The vehicle body structure integrates the battery pack and seat crossbeams as the vehicle floor, thereby reducing the amount of floor space required and freeing up more interior space, thus improving space utilization. Furthermore, an avoidance opening is provided on the sealing part of the sill beam so that the end of the seat crossbeam extends into the avoidance opening, making the seat crossbeam as close as possible to the sill beam. As a load-bearing component in a side collision, the seat crossbeam can first support the sill beam when it is subjected to a side impact, thereby protecting the battery pack, reducing the force deformation of the battery pack in a side collision, and improving the safety of the battery pack. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] Figure 1 This is a schematic diagram of the vehicle body structure provided in the embodiments of this application;

[0021] Figure 2 for Figure 1 Schematic diagram of the installation structure of the central sealing strip;

[0022] Figure 3 for Figure 1 A cross-sectional schematic diagram of the middle seat crossbeam;

[0023] Figure 4 for Figure 1 Schematic diagram of the cross-section at the bolt;

[0024] Figure 5 for Figure 1 Schematic diagram of the middle sealing part;

[0025] Figure 6 for Figure 1 A schematic diagram of the cross-section of the middle sill beam at the bolt connection;

[0026] Figure 7 for Figure 1 A schematic diagram of the cross-section of the middle sill beam at the seat crossbeam.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Threshold beam; 110. Sealing part; 111. Clearance opening; 120. Threshold body; 130. First connecting part;

[0029] 200. Battery pack; 210. Main body; 220. Second connecting part; 230. Reinforcing part;

[0030] 300. Seat crossbeam;

[0031] 400. Sealing strip; 410. Straight section; 420. Clearance section;

[0032] 500, Bolt.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0035] It should be noted that 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] Side pole collision is a vehicle safety test that simulates a collision between a vehicle and a pole-shaped object (such as a tree trunk or utility pole) perpendicular to the direction of travel. The purpose of this test is to evaluate the vehicle's safety in a side collision, particularly its ability to protect passengers.

[0039] Cell-to-pack (CTP) technology is a battery pack integration technology that directly integrates the cells into the battery pack, skipping the traditional module stage, thereby improving space utilization and energy density.

[0040] Cell to Body (CTB) technology is a technology that integrates a battery pack directly into the vehicle body structure, using the top cover of the battery pack as the vehicle floor.

[0041] With the development of new energy vehicles, significant progress has been made in technological advancement and market penetration in recent years. Battery technology, as a core component of electric vehicles, is also undergoing continuous innovation and optimization.

[0042] Battery pack technology is evolving from CTP (Cell to Pack) to CTB (Cell to Body). CTB technology integrates the battery pack with the vehicle body structure, reducing the independent space required for the battery pack and allowing it to fit more closely to the vehicle body, thereby reducing the overall vehicle size. In existing technologies, the sill beam is connected to the battery pack. To meet the sealing requirements between the sill beam and the battery pack, and to facilitate installation, a certain installation gap needs to be provided between the seat crossbeam on the battery pack and the sealing structure of the sill beam.

[0043] However, when the vehicle's sill beam is subjected to a side impact and cannot adequately absorb the impact force, the impact force is directly transferred to the battery pack, causing the battery pack to be squeezed and deformed, which seriously affects the safety of the battery pack.

[0044] To address the aforementioned issues, this application provides a vehicle body structure and a vehicle. The vehicle body structure integrates the battery pack and seat crossbeams as the vehicle floor, thereby reducing the need for a separate vehicle floor, freeing up more interior space, and improving space utilization. Furthermore, an avoidance opening is provided on the sealing portion of the sill beam, allowing the end of the seat crossbeam to extend into the avoidance opening, thus bringing the seat crossbeam as close to the sill beam as possible. As a load-bearing component during side collisions, the seat crossbeam can first support the sill beam when it is subjected to a side impact, thereby protecting the battery pack, reducing the force deformation of the battery pack during side collisions, and improving the safety of the battery pack.

[0045] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0046] On the one hand, this application provides a vehicle body structure, referring to Figure 1 , Figure 2 and Figure 5 The vehicle body structure includes a door sill beam 100, a battery pack 200, and a seat crossbeam 300.

[0047] The door sill beam 100 is connected to the battery pack 200. The top cover of the battery pack 200 is used to form the floor of the vehicle body structure, and the seat crossbeam 300 is fixed to the top cover of the battery pack 200.

[0048] The sill beam 100 is provided with a plurality of sealing portions 110, which are located on the side of the sill beam 100 facing the battery pack 200. An avoidance opening 111 is formed between adjacent sealing portions 110. The end of the seat crossbeam 300 extends into the avoidance opening 111 so that the end of the seat crossbeam 300 is close to the sill beam 100. The side of the sealing portion 110 near the battery pack 200 is used to seal with the battery pack 200. The side of the sill beam 100 corresponding to the avoidance opening 111 and close to the top cover of the battery pack 200 is used to seal with the battery pack 200.

[0049] By integrating the seat crossbeam 300 onto the top cover of the battery pack 200 and using the top cover of the battery pack 200 as the vehicle floor, more interior space is freed up, improving space utilization. Furthermore, the integration with the seat crossbeam 300 enhances the torsional stiffness of the battery pack 200 and improves its safety.

[0050] An avoidance opening 111 is formed between adjacent sealing portions 110, and the end of the seat beam 300 is extended into the avoidance opening 111 so that the end of the seat beam 300 is embedded in the sealing portion 110 of the sill beam 100, so as to minimize the distance between the seat beam 300 and the sill beam 100. After the sill beam 100 is subjected to a side impact, i.e., during the side pillar impact test, the impact force can be directly transmitted to the seat beam 300 so that the seat beam 300 can resist the impact force and reduce the possibility of seal failure.

[0051] Furthermore, after the seat beam 300 extends into the clearance opening 111, the end of the seat beam 300 extends beyond the cell sidewall of the battery pack 200, so that during the process of receiving a side impact, the seat beam 300 bears the impact force before the battery pack 200, thereby reducing the impact on the battery pack 200 and improving the safety of the battery pack 200.

[0052] The number and position of the clearance openings 111 on the sealing part 110 of the sill beam 100 are matched with those of the seat crossbeam 300. This allows the ends of the seat crossbeam 300 to be inserted into the clearance openings 111 one by one. Correspondingly, clearance openings 111 are provided on the sealing parts 110 of the sill beams 100 on both sides of the vehicle body structure.

[0053] In some embodiments, refer to Figure 3 , Figure 4 , Figure 6 and Figure 7 The sill beam 100 includes a sill body 120 and a first connecting part 130. The first connecting part 130 is connected to the side of the sill body 120 near the battery pack 200. The first connecting part 130 is located above the battery pack 200. A sealing part 110 is disposed on the first connecting part 130.

[0054] The first connecting part 130 has a cavity inside, which reduces the weight of the sill beam 100 while improving its ability to withstand lateral impacts. The sill body 120 and the first connecting part 130 are integrally formed. The sealing part 110 is located on the side of the first connecting part 130 near the battery pack 200.

[0055] In some embodiments, refer to Figure 3 and Figure 4 The battery pack 200 includes a main body 210 and a second connecting part 220. The second connecting part 220 is connected to the side of the main body 210 near the sill beam 100. The second connecting part 220 is located below the first connecting part 130. A plurality of bolts 500 are provided on the second connecting part 220. The bolts 500 pass through the second connecting part 220 and are connected to the first connecting part 130.

[0056] The second connecting part 220 and the main body 210 are integrally formed. The second connecting part 220 protrudes from the side of the main body 210, and the height of the second connecting part 220 is less than the height of the main body 210 to facilitate the installation of the bolt 500. The second connecting part 220 also has a cavity through which the bolt 500 passes to connect with the first connecting part 130, thereby ensuring the effective length of the bolt 500 connection and improving the connection effect. At the same time, the cavity of the second connecting part 220 also plays a certain role in buffering and absorbing energy to achieve a better protection effect.

[0057] Furthermore, the second connecting portion 220 includes a connecting section and a protective section, which are integrally formed. The connecting section is located above the protective section, and both the connecting section and the protective section are rectangular frame structures. The top plane of the second connecting section and the top plane of the connecting section serve as the mounting surface of the battery pack 200. At the mounting bolt 500, the bottom of the protective section is open to allow the bolt 500 to be placed inside the connecting section. The connecting section has a through hole at the mounting location for the bolt 500 to pass through. The protective section provides protection for the bolt 500, concealing the bolt 500 and also improving the impact resistance of the connection.

[0058] A nut is pre-installed inside the cavity of the first connecting part 130. The bottom plane of the first connecting part 130 is the mounting surface of the sill beam 100. A hole is opened on the mounting surface of the sill beam 100 so that the bolt 500 can pass through the cavity of the first connecting part 130 and be threadedly connected to the nut. In this way, the bolt 500 is hidden after connecting the first connecting part 130 and the second connecting part 220, which provides a certain degree of protection for the bolt 500 connection.

[0059] The first connecting part 130 and the second connecting part 220 are connected by bolts 500. On the one hand, the connection between the side of the battery pack 200 and the sill beam 100 is realized, providing support for the battery pack 200. On the other hand, the sealing strip 400 between the sealing part 110 and the battery pack 200 can be pressed to achieve a good sealing effect.

[0060] Where no bolts 500 are installed, the connecting section, the protective section, and the first connecting part 130 are all complete frame structures, providing good support.

[0061] In some embodiments, refer to Figure 2 The connection between the first connecting part 130 and the bolt 500 is misaligned with the clearance opening 111.

[0062] The bolt 500 on the first connecting part 130 is misaligned with the clearance opening 111, so that the bolt 500 avoids the clearance opening 111. This avoids the inability to seal the battery pack 200 and the sill beam 100 due to the setting of the bolt 500, or avoids increasing the width of the first connecting part 130, reducing excessive design and thus reducing the weight of the vehicle body.

[0063] The sealing part 110 is integrally formed with the first connecting part 130. The sealing part 110 is a plate-shaped structure with a flange. When the second connecting part 220 is bolted 500 to the first connecting part 130, the sealing part 110 is located on the top of the battery pack 200.

[0064] Furthermore, there is an assembly gap between the seat crossbeam 300 and the first connecting portion 130. Specifically, there is a certain assembly gap between the end of the seat crossbeam 300 and the end wall of the clearance opening 111, and between the seat crossbeam 300 and the sill beam 100. For example, the assembly gap between the end of the seat crossbeam 300 and the end wall of the clearance opening 111 is 5mm. In actual manufacturing processes, the assembly gap between the seat crossbeam 300 and the end wall of the clearance opening 111 is determined by the specific assembly process and can be adjusted according to the required assembly precision.

[0065] The vehicle body structure also includes a sealing strip 400, which is disposed between the sealing part 110 and the battery pack 200 to form a seal between the sill beam 100 and the battery pack 200; the sealing strip 400 is disposed between the first connecting part 130 and the battery pack 200, i.e. at the clearance opening 111, to form a seal between the clearance opening 111 and the battery pack 200.

[0066] The width of the sealing part 110 is set to 25mm-40mm. The width of the sealing part 110 is greater than the width of the sealing strip 400, so as to completely cover the sealing strip 400 and improve the sealing effect.

[0067] For example, the width of the sealing part 110 is set to 33 mm.

[0068] In the embodiments of this application, the two sides of the clearance opening 111 are sealing portions 110, and the inner wall of the clearance opening 111 is the side wall of the first connecting portion 130 of the sill beam 100. This is to ensure that the seat crossbeam 300 is as close as possible to the sill beam 100, providing support for the sill beam 100.

[0069] Furthermore, in order to achieve a seal between the sill beam 100 and the battery panel, the sealing strip 400 is adapted to the clearance opening 111, that is, the sealing point between the battery pack 200 and the sill beam 100 is moved between the first connecting part 130 and the battery pack 200. In this way, without affecting the sealing and installation of the sill beam 100, the seat crossbeam 300 is brought as close as possible to the sill beam 100 to provide better support.

[0070] In some embodiments, the top plane of the second connecting portion 220 is flush with the top plane of the main body portion 210.

[0071] That is, the mounting plane and the sealing surface of the battery pack 200 are located on the same plane. This reduces the number of positioning points during subsequent installation of the battery pack 200, making installation simpler and improving assembly efficiency. At the same time, it also facilitates changes in the sealing position of the battery pack 200. In the continuous sealing between the battery pack 200 and the sill beam 100, even if the sealing position changes, no additional specific sealing structure is required.

[0072] In some embodiments, refer to Figure 3 and Figure 4 The bottom surface of the first connecting part 130 is the mounting surface of the sill beam 100, and the bottom sealing surface of the sealing part 110 is flush with the mounting surface of the sill beam 100.

[0073] The mounting surface of the sill beam 100 and the sealing surface of the sealing part 110 are located in the same plane. Similarly, the top plane of the mounting surface of the battery pack 200, i.e., the second connecting part 220, and the sealing surface of the battery pack 200 are also located in the same plane. During installation, when the battery pack 200 is installed upwards, it is only necessary to ensure the flat fit of the mounting surfaces to achieve the flat fit of the sealing surfaces, making the installation simpler and improving the installation efficiency of the integrated battery pack 200 and the vehicle body in the CTB structure.

[0074] In some embodiments, refer to Figure 2 The sealing strip 400 includes an integrally formed straight section 410 and a clearance section 420. The clearance section 420 is located at the clearance opening 111 and extends between the mounting surface and the top plane of the second connecting part 220 to seal the gap between the mounting surface and the top plane of the second connecting part 220. The straight section 410 is disposed between the sealing part 110 and the battery pack 200 to seal the gap between the sealing part 110 and the battery pack 200.

[0075] Specifically, the number of clearance sections 420 is set according to the number of seat crossbeams 300. For example, in this embodiment, the number of seat crossbeams 300 is set to two. Therefore, two clearance openings 111 are provided on the sealing part 110 on one side of the vehicle body structure, and correspondingly, the sealing strip 400 is set to two clearance sections 420.

[0076] Furthermore, the clearance section 420 is trapezoidal, with inclined portions on both sides for connecting to the straight section 410. These inclined portions are inserted between the first connecting portion 130 and the second connecting portion 220 within the clearance opening 111, ensuring that at the clearance opening 111, the mounting and sealing surfaces of the battery pack 200 and the sill beam 100 are both the connecting planes of the first connecting portion 130 and the second connecting portion 220. Simultaneously, because the bolt 500 connection is misaligned with the clearance opening 111, the bolt 500 connection does not obstruct the installation of the sealing strip 400. The bolts 500 on both sides of the clearance opening 111 press the first connecting portion 130, the second connecting portion 220, and the sealing strip 400 together to achieve a sealing effect.

[0077] In other embodiments, the avoidance section 420 may also be a rectangular protrusion. Further details will not be provided here.

[0078] Furthermore, the sealing surfaces of the sill beams 100 on both sides of the vehicle body are located in the same plane. The sealing strip 400 has a complete ring structure, making the sealing surface of the entire vehicle flush with the sealing surface of the sill beam 100, so as to unify the sealing strips 400 of the sill beams 100 on both sides of the vehicle body into a whole, further improving the sealing effect of the entire vehicle.

[0079] In some embodiments, refer to Figure 3 and Figure 4 The battery pack 200 also includes a reinforcing part 230, which is connected between the main body 210 and the second connecting part 220. A buffer cavity is formed between the reinforcing part 230 and the main body 210 to buffer the impact on the main body 210.

[0080] The second connecting part 220, the reinforcing part 230 and the main body part 210 are integrally formed. The reinforcing part 230 is the side frame structure of the battery pack 200. The buffer cavity inside the reinforcing part 230 provides protection for the battery cells inside the battery, thereby improving the overall protection capability of the battery pack 200.

[0081] The sill beam 100 also has multiple cavities inside to improve its strength and absorb the impact force generated by the impact, so as to achieve the purpose of buffering and energy absorption.

[0082] On the other hand, this application provides a vehicle including the body structure described in the above embodiments.

[0083] The vehicle body structure in this embodiment is the same as that provided in any of the above embodiments and can bring the same or similar technical effects. It will not be described in detail here. For details, please refer to the description of the above embodiments.

[0084] The vehicle provided in this application integrates the battery pack 200 and the seat crossbeam 300 as the vehicle floor, thereby reducing the amount of floor space required and freeing up more interior space, improving space utilization. Furthermore, an avoidance opening 111 is provided on the sill beam 100 so that the end of the seat crossbeam 300 extends into the avoidance opening 111, bringing the seat crossbeam 300 as close as possible to the sill beam 100. As a load-bearing component in side collisions, the seat crossbeam 300 provides initial support to the sill beam 100 when it is subjected to a side impact, thus protecting the battery pack 200, reducing its deformation during side collisions, and improving its safety. A sealing strip 400 seals the gap between the sill beam 100 and the battery pack 200 to meet the overall vehicle sealing requirements.

[0085] Other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of this application. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0086] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A vehicle body structure, characterized in that, Includes door sill beam (100), battery pack (200) and seat crossbeam (300); The sill beam (100) is connected to the battery pack (200), the upper cover of the battery pack (200) is used to form the floor of the vehicle body structure, and the seat crossbeam (300) is fixed to the upper cover of the battery pack (200); The sill beam (100) is provided with a plurality of sealing portions (110), the sealing portions (110) being located on the side of the sill beam (100) facing the battery pack (200), and a clearance opening (111) being formed between adjacent sealing portions (110). The end of the seat crossbeam (300) extends into the clearance opening (111) so that the end of the seat crossbeam (300) is close to the sill beam (100). The side of the sealing portion (110) near the battery pack (200) is used to seal with the battery pack (200). The side of the sill beam (100) corresponding to the clearance opening (111) and close to the top cover of the battery pack (200) is used to seal with the battery pack (200).

2. The vehicle body structure according to claim 1, characterized in that, The threshold beam (100) includes a threshold body (120) and a first connecting part (130). The first connecting part (130) is connected to the side of the threshold body (120) near the battery pack (200). The first connecting part (130) is located above the battery pack (200) and connected to the battery pack (200). The sealing part (110) is disposed on the first connecting part (130).

3. The vehicle body structure according to claim 2, characterized in that, The battery pack (200) includes a main body (210) and a second connecting part (220). The second connecting part (220) is connected to the side of the main body (210) near the sill beam (100). The second connecting part (220) is located below the first connecting part (130). A plurality of bolts (500) are provided on the second connecting part (220). The bolts (500) pass through the second connecting part (220) and are connected to the first connecting part (130).

4. The vehicle body structure according to claim 3, characterized in that, The connection point between the first connecting part (130) and the bolt (500) is offset from the clearance opening (111).

5. The vehicle body structure according to claim 3, characterized in that, There is an assembly gap between the seat crossbeam (300) and the first connecting part (130).

6. The vehicle body structure according to claim 3, characterized in that, The side of the first connecting part (130) near the battery pack (200) is the mounting surface of the sill beam (100), and the side of the sealing part (110) near the battery pack (200) is the sealing surface, which is flush with the mounting surface.

7. The vehicle body structure according to claim 6, characterized in that, It also includes a sealing strip (400), which includes an integrally formed straight section (410) and a clearance section (420). The clearance section (420) is located at the clearance opening (111) and extends between the mounting surface and the top plane of the second connecting part (220) to seal the gap between the mounting surface and the top plane of the second connecting part (220). The straight section (410) is disposed between the sealing part (110) and the battery pack (200) to seal the gap between the sealing part (110) and the battery pack (200).

8. The vehicle body structure according to any one of claims 3-7, characterized in that, The second connecting part (220) has a cavity, through which the bolt (500) passes to connect with the first connecting part (130).

9. The vehicle body structure according to any one of claims 3-7, characterized in that, The battery pack (200) also includes a reinforcing part (230) connected between the main body part (210) and the second connecting part (220). A buffer cavity is formed between the reinforcing part (230) and the main body part (210) to buffer the impact on the main body part (210).

10. A vehicle, characterized in that, The vehicle body structure includes any one of claims 1-9.

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