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 includes a battery pack configured to constitute a vehicle body floor of the vehicle body structure; a first sealing part is arranged on the vehicle body rear end structure; a second sealing part is arranged on the front wall lower plate; the two doorsill beams are provided with third sealing parts; the vehicle body rear end structure and the front wall lower plate are connected to the two ends of the two threshold beams correspondingly, so that the first sealing part, the second sealing part and the two third sealing parts are connected to form an annular sealing structure, the faces, facing the battery pack, of the first sealing part, the second sealing part and the third sealing parts are located on the same plane, and the annular sealing structure is located above the battery pack. And the sealing element is positioned between the battery pack and the annular sealing structure so as to seal a gap between the battery pack and the annular sealing structure. According to the vehicle body structure, the vehicle body is arranged in the same plane in a sealed mode, and vehicle body sealing in a CTB structure is facilitated.

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). 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 tightly into the vehicle body, thus reducing the overall vehicle size. CTP body structures typically feature a traditional floor panel, with the overall sealing function divided into multiple sections: the floor panel, the lower front bulkhead, the second-row seat crossbeam, the rear second-row seat crossbeam, and the door sill inner panel, all sealed to the floor. The battery is located beneath the floor panel. In CTB body structures, the battery pack is integrated with the body structure, serving as the body floor, and the overall sealing of the vehicle body is combined with the battery pack.

[0004] However, dividing the seal into multiple segments for separate sealing requires switching between different sealing surfaces between different components during the sealing process, which is not conducive to the installation of the battery pack. Summary of the Invention

[0005] This application provides a vehicle body structure and vehicle to solve the problem that in CTB vehicle body structures, sealing is divided into multiple segments and sealed separately, requiring switching between different sealing surfaces between different components during the sealing process, which is not conducive to the installation of the battery pack.

[0006] On one hand, this application provides a vehicle body structure, including:

[0007] A battery pack, which is configured as a vehicle floor constituting the vehicle body structure;

[0008] A rear-end structure of the vehicle body, wherein a first sealing part is provided on the rear-end structure of the vehicle body;

[0009] The lower front panel is provided with a second sealing part;

[0010] Two door sill beams, each door sill beam having a third sealing part;

[0011] The rear end structure of the vehicle body and the lower front panel are respectively connected to the two ends of the two sill beams, so that the first sealing part, the second sealing part and the two third sealing parts are connected to form an annular sealing structure. The surfaces of the first sealing part, the second sealing part and the third sealing part facing the battery pack are located on the same plane, and the annular sealing structure is located above the battery pack.

[0012] A seal is located between the battery pack and the annular sealing structure to seal the gap between the battery pack and the annular sealing structure.

[0013] In some embodiments, the mounting surface of the rear-end structure of the vehicle body facing the battery pack and the sealing surface of the first sealing portion facing the battery pack are located on the same plane.

[0014] In some embodiments, the mounting surface of the lower front panel facing the battery pack cover and the sealing surface of the second sealing portion facing the battery pack are located on the same plane.

[0015] In some embodiments, the mounting surface of the sill beam facing the battery pack cover and the sealing surface of the third sealing portion facing the battery pack are located on the same plane.

[0016] In some embodiments, the mounting surface of the rear-end structure of the vehicle body facing the battery pack and the mounting surface of the sill beam facing the battery pack cover are located on the same plane.

[0017] In some embodiments, the mounting surface of the rear end structure facing the battery pack, the mounting surface of the sill beam facing the battery pack cover, and the mounting surface of the lower front panel facing the battery pack cover are all located on the same plane.

[0018] In some embodiments, the thickness of the first sealing portion near the bottom of the seal is greater than the thickness of the middle portion of the first sealing portion, and the surface of the first sealing portion near the seal abuts against the seal.

[0019] In some embodiments, the first sealing portion includes a first sealing rib and two second sealing ribs, the two first sealing ribs being respectively connected to both sides of the first sealing rib, a mounting boss being provided on the rear end structure of the vehicle body, the first sealing rib being located below the mounting boss and abutting against the sealing element, the second sealing rib being located outside the mounting boss, and a flange being provided on the second sealing rib, the flange abutting against the sealing element.

[0020] In some embodiments, the second sealing portion is provided with a fastener for connecting to the battery pack, the fastener being located on the side of the second sealing portion away from the lower front panel.

[0021] In some embodiments, the second sealing portion includes a sealing section, a connecting section, and a mounting section connected in sequence. The mounting section is connected to the lower front panel. The sealing section is located above the battery pack. The sealing member is disposed between the sealing section and the battery pack. The mounting section is located on the battery pack. The fixing member is disposed on the mounting section.

[0022] In some embodiments, there is a gap between the side of the sealing section adjacent to the battery pack and the side of the mounting section adjacent to the battery pack.

[0023] 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 and connected to the battery pack, and the third sealing portion being disposed on the first connecting portion.

[0024] In some embodiments, the third sealing portion is provided in multiple ways, and a clearance opening is formed between adjacent third sealing portions. A seat beam is integrated on the battery pack, and the end of the seat beam extends into the clearance opening so that the end of the seat beam is close to the sill body.

[0025] In some embodiments, the seal is provided with a clearance section located at the clearance opening and extending partially between the first connection and the battery pack to seal the gap between the clearance opening of the sill beam and the battery pack.

[0026] On the other hand, this application provides a vehicle including the above-described body structure.

[0027] This application provides a vehicle body structure and vehicle. The vehicle body structure divides the sealing of the vehicle body into four areas for sealing by setting a first sealing part on the rear end structure of the vehicle body, a second sealing part on the lower front bulkhead, and a third sealing part on the two sill beams. The first sealing part, the second sealing part, and the two third sealing parts are connected to form an annular sealing structure. The sealing surfaces of the first sealing part, the second sealing part, and the third sealing part are all located on the same plane and seal with the sealing element on the battery pack. This ensures that the sealing surfaces of the entire vehicle body are all located in the same plane, avoiding the situation where the sealing element switches between different sealing surfaces between different components, which is beneficial to improving the sealing effect of the entire vehicle. At the same time, it facilitates the installation of the integrated battery pack and sealing elements, improves installation efficiency, and is suitable for vehicle body sealing in CTB structures. Attached Figure Description

[0028] 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.

[0029] Figure 1 An exploded view of the vehicle body structure provided in this application embodiment;

[0030] Figure 2 This is a schematic diagram of the vehicle body structure provided in the embodiments of this application;

[0031] Figure 3 for Figure 2 Schematic diagram of the connection structure between the middle door sill beam and the lower front panel;

[0032] Figure 4 for Figure 2 Schematic diagram of the connection structure between the middle sill beam and the rear end structure of the vehicle body;

[0033] Figure 5 for Figure 2 Diagram of the sealing zone;

[0034] Figure 6 for Figure 2 Schematic diagram of the sealing structure between the rear end structure of the vehicle body and the battery pack;

[0035] Figure 7 for Figure 6 Schematic diagram of the connection structure of the first sealing rib;

[0036] Figure 8 for Figure 6 Enlarged schematic diagram of the structure of the first sealing rib;

[0037] Figure 9 for Figure 6 Schematic diagram of the connection structure of the second sealing rib;

[0038] Figure 10 for Figure 2 Schematic diagram of the sealing structure between the lower front bulkhead and the battery pack;

[0039] Figure 11 for Figure 2 Schematic diagram of the sealing structure between the middle sill beam and the battery pack;

[0040] Figure 12 for Figure 11 Cross-sectional view of the area between the middle door sill beam and the battery pack.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100. Battery pack; 110. Seat crossbeam;

[0043] 200. Rear end structure of the vehicle body; 210. First sealing part; 211. First sealing rib; 2111. Transition section; 2112. Abutting section; 212. Second sealing rib; 213. Flanged part; 220. Mounting boss;

[0044] 300. Lower front panel; 310. Second sealing part; 311. Sealing section; 312. Connecting section; 313. Mounting section; 320. Fastener; 330. Lower front crossbeam;

[0045] 400. Threshold beam; 410. Third sealing part; 411. Clearance opening; 420. Threshold body; 430. First connecting part;

[0046] 500. Sealing element; 510. Clearance section.

[0047] 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

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] Battery pack technology has evolved from Cell-to-Pack (CTP) to Cell-to-Body (CTB). 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 tightly into the vehicle body, thereby reducing the overall size of the vehicle. The CTP body structure features a traditional floor panel, with the overall vehicle sealing achieved through seals between the floor panel, the lower front bulkhead, the middle crossbeam of the second-row seats, the rear crossbeam of the second-row seats, and the inner door sill panel. The battery is located beneath the floor panel.

[0056] However, in the CTB body structure, the battery pack is integrated with the body structure, and the sealing method used in the CTP body structure is not suitable for the CTB body structure.

[0057] To address the aforementioned issues, this application provides a vehicle body structure and a vehicle. The vehicle body structure divides the vehicle body sealing into four areas by providing a first sealing portion on the rear end structure, a second sealing portion on the lower front bulkhead, and third sealing portions on the two door sill beams. The first, second, and two third sealing portions are connected to form an annular sealing structure. The sealing surfaces of the first, second, and third sealing portions are all located on the same plane and seal with the sealing elements on the battery pack. This ensures that the sealing surfaces of the entire vehicle body are all located on the same plane, avoiding the need for the sealing elements to switch between different sealing surfaces between different components. This improves the overall vehicle sealing effect and facilitates the installation of the integrated battery pack and sealing elements, increasing installation efficiency. This design is suitable for vehicle body sealing in CTB structures.

[0058] 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.

[0059] On the one hand, this application provides a vehicle body structure, referring to Figures 1 to 12 The vehicle body structure includes:

[0060] Battery pack 100, which is configured as the body floor constituting the vehicle body structure;

[0061] The rear end structure 200 of the vehicle body is provided with a first sealing part 210.

[0062] The lower front panel 300 is provided with a second sealing part 310.

[0063] Two door sill beams 400, and a third sealing part 410 is provided on the door sill beams 400;

[0064] The rear end structure 200 and the lower front panel 300 are respectively connected to the two ends of the two door sill beams 400 so that the first sealing part 210, the second sealing part 310 and the two third sealing parts 410 are connected to form an annular sealing structure. The surfaces of the first sealing part 210, the second sealing part 310 and the third sealing part 410 facing the battery pack 100 are on the same plane, and the annular sealing structure is located above the battery pack 100.

[0065] A seal 500 is located between the battery pack 100 and the annular sealing structure to seal the gap between the battery pack 100 and the annular sealing structure.

[0066] The sealing element 500 is a sealing strip. For example, the sealing strip can be a rubber sealing strip, which is compressible. Compression of the sealing strip achieves a seal between the battery pack 100 and the vehicle body structure. The sealing strip is a complete annular structure, which connects with the first sealing part 210, the second sealing part 310, and the two third sealing parts 410 to form an annular sealing structure, thereby preventing interruptions in the sealing strip and improving the sealing effect.

[0067] The battery pack 100 has multiple mounting ears at both ends. One mounting ear connects to the lower front crossbeam 330 on the lower front panel 300, while the other mounting ear connects to the rear vehicle structure 200, forming the main load-bearing support for the battery pack 100. Furthermore, the top cover of the battery pack 100 connects to the sill beam 400, the lower front panel 300, and the rear vehicle structure 200, further providing support and enclosing the vehicle floor formed by the top cover of the battery pack 100, thus providing an installation location for vehicle body sealing. The rear vehicle structure 200 is used to install rear seats, seat belts, and other rear-end structures, equivalent to the rear floor structure of other vehicles.

[0068] By adopting the above technical solution, and referring to Figure 5 The vehicle body is sealed in four areas, namely the seal between the rear structure 200 of the vehicle body and the battery pack 100 (e.g., Figure 5 (a) The seal between the lower front panel 300 and the battery pack 100 (e.g., the seal between the dashed box a) and the lower front panel 300) Figure 5 (b) The seal between the two sill beams 400 and the battery pack 100 (e.g., the seal between the dashed box in the middle) Figure 5 (c) Dashed box in the middle. Compared to traditional vehicle body sealing methods, which require dividing the seal into six or more areas and sealing each area individually, this sealing method is more convenient and reduces the number of corresponding parts.

[0069] The sealing surfaces of the first sealing part 210, the second sealing part 310, and the third sealing part 410 are all located on the same plane. The sealing strip is pre-set on the upper cover of the battery pack 100 and seals with the sealing element 500 on the battery pack 100. This ensures that the sealing surfaces of the entire vehicle body are all located on the same plane, avoiding the situation where the sealing element 500 switches between different sealing surfaces between different components. This is beneficial to improving the sealing effect of the entire vehicle. At the same time, it facilitates the installation of the integrated battery pack 100 and the sealing element 500, improving installation efficiency and making it suitable for vehicle body sealing in CTB structures.

[0070] Among them, reference Figure 2 and Figure 3 The lower front panel 300 has a lower front crossbeam 330, and the two ends of the lower front crossbeam 330 are respectively partially overlapped with the ends of the sill beam 400 and fixed by bolts.

[0071] The second sealing part 310 on the lower front panel 300 and the third sealing part 410 on the sill beam 400 are located in the same plane, and the second sealing part 310 contacts the third sealing part 410. A flange is provided at the end of the second sealing part 310 or the third sealing part 410 to overlap the third sealing part 410 or the second sealing part 310, so as to reduce the generation of sealing gaps and improve the sealing effect.

[0072] Reference Figure 2 and Figure 4 The rear end structure 200 of the vehicle body is provided with flanges at both ends. The flanges on the rear end structure 200 of the vehicle body are located above the first sealing part 210. The flanges overlap the sill beam 400, so that the first sealing part 210 and the third sealing part 410 are located in the same plane. The end of the first sealing part 210 abuts against the third sealing part 410 to reduce the sealing gap.

[0073] In some embodiments, the mounting surface of the rear end structure of the vehicle body facing the battery pack 100 and the sealing surface of the first sealing portion 210 facing the battery pack 100 are located on the same plane.

[0074] The side of the rear end structure 200 facing the battery pack 100 is the mounting surface between the rear end structure 200 and the battery pack 100, and the side of the first sealing part 210 facing the battery pack 100 is the sealing surface. The mounting surface and the sealing surface of the rear end structure 200 are located on the same plane, which facilitates the installation of the battery pack 100 and the rear end structure 200, reduces the number of planes that need to be positioned between the rear end structure 200 and the battery pack 100 during the installation process, and improves the installation efficiency.

[0075] In some embodiments, the mounting surface of the lower front panel 300 facing the top cover of the battery pack 100 and the sealing surface of the second sealing portion 310 facing the battery pack 100 are located on the same plane.

[0076] In this embodiment, the surface of the lower front panel 300 facing the top cover of the battery pack 100 is the mounting surface, and the surface of the second sealing part 310 facing the battery pack 100 is the sealing surface. In this embodiment, the sealing surface and the mounting surface between the lower front panel 300 and the battery pack 100 are located on the same plane, which facilitates the installation of the battery pack 100 and the lower front panel 300, reduces the number of planes that need to be positioned between the lower front panel 300 and the battery pack 100 during installation, and improves installation efficiency.

[0077] In some embodiments, the mounting surface of the sill beam 400 facing the top cover of the battery pack 100 and the sealing surface of the third sealing portion 410 facing the battery pack 100 are located on the same plane.

[0078] The side of the sill beam 400 facing the top cover of the battery pack 100 is the mounting surface, and the side of the third sealing part 410 facing the battery pack 100 is the sealing surface. Both the sealing surface and the mounting surface between the sill beam 400 and the battery pack 100 are located on the same plane, facilitating the installation of the battery panel and the sill beam 400. This reduces the number of planes that need to be positioned between the sill beam 400 and the battery pack 100 during installation, thus improving installation efficiency.

[0079] In some embodiments, the mounting surface of the rear end structure 200 facing the battery pack 100 and the mounting surface of the sill beam 400 facing the top cover of the battery pack 100 are located on the same plane.

[0080] In this embodiment, the sealing surfaces and mounting surfaces between the sill beam 400, the rear-end structure 200, and the battery pack 100 are all located on the same plane. Simultaneously, the sealing surfaces of the first sealing part 210, the second sealing part 310, and the third sealing part 410 are all located on the same plane. This ensures that the sealing surfaces of the battery pack 100 with the upper rear-end structure 200, the lower front panel 300, and the two sill beams 400 are unified, and that most of the mounting surfaces are also unified. This facilitates the installation of the battery pack 100 with the rear-end structure 200, the lower front panel 300, and the two sill beams 400, improving installation efficiency.

[0081] In some embodiments, the mounting surface of the rear end structure 200 facing the battery pack 100, the mounting surface of the sill beam 400 facing the top cover of the battery pack 100, and the mounting surface of the lower front panel 300 facing the top cover of the battery pack 100 are all located on the same plane.

[0082] In this embodiment, the sealing surfaces and mounting surfaces of the lower front panel 300, sill beams 400, rear end structure 200, and battery pack 100 are all located on the same plane. This ensures that the sealing surfaces and mounting surfaces of the battery pack 100, the upper rear end structure 200, the lower front panel 300, and the two sill beams 400 are all aligned to the same plane. This unifies the positioning surfaces of the battery pack 100 during installation, facilitating installation between the battery pack 100 and the rear end structure 200, the lower front panel 300, and the two sill beams 400, thus improving installation efficiency.

[0083] In some embodiments, refer to Figure 6 , Figure 7 , Figure 8 and Figure 9 The thickness of the bottom of the first sealing part 210 near the sealing member 500 is greater than the thickness of the middle part of the first sealing part 210, and the surface of the first sealing part 210 near the sealing member 500 abuts against the sealing member 500.

[0084] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 In some embodiments, the first sealing part 210 includes a first sealing rib 211 and two second sealing ribs 212. The two first sealing ribs 212 are respectively connected to both sides of the first sealing rib 211. A mounting boss 220 is provided on the rear end structure 200 of the vehicle body. The first sealing rib 211 is located below the mounting boss 220 and abuts against the sealing element 500. The second sealing rib 212 is located outside the mounting boss 220 and has a flange 213, which abuts against the sealing element 500.

[0085] Specifically, the first sealing rib 211 is integrally formed with the rear end structure 200 of the vehicle body, which is manufactured by die casting. The first sealing rib 211 is disposed on the rear end structure 200 and is located below the mounting boss 220. (Refer to...) Figure 8 The first sealing rib 211 includes a transition section 2111 and an abutting section 2112. The thickness of the surface of the abutting section 2112 near the seal 500 is greater than the thickness of the transition section 2111. The abutting section 2112 is used to abut against the sealing strip. The transition section 2111 and the abutting section 2112 are smoothly connected along the height direction of the cross section of the first sealing rib 211.

[0086] The second sealing rib 212 is located outside the mounting boss 220. The second sealing rib 212 is provided with a flange 213, which is used to abut against the sealing strip. The surface of the abutting section 2112 near the sealing element 500 and the surface of the flange 213 near the sealing element 500 are located in the same plane.

[0087] The mounting boss 220 is located in the middle of the rear end structure 200 of the vehicle body. The mounting boss 220 protrudes from the edge of the rear end structure 200 of the vehicle body and the first sealing rib 211. The mounting boss 220 is used to install the upper structure of the rear end structure 200 of the vehicle body.

[0088] The rear end structure 200 of the vehicle body is a die-cast part. To facilitate the smooth demolding of the rear end structure 200, the transition section 2111 of the first sealing rib 211 and the abutment section 2112 are smoothly connected. The thickness of the end of the abutment section 2112 connected to the transition section 2111 is equal to the thickness of the transition section 2111, and the thickness of the abutment section 2112 away from the transition section 2111 is greater than the thickness of the transition section 2111. The sidewall of the abutment section 2112 is sloped to smoothly increase the thickness of the bottom surface of the abutment section 2112. The cross-section of the abutment section 2112 is trapezoidal in height. The second sealing rib 212 is located on the side of the mounting boss 220, so that there is no demolding obstruction on the upper and lower sides of the second sealing rib 212. The flanged part 213 on the second sealing rib 212 is ejected from the upper and lower directions through the upper and lower molds respectively, thus realizing the demolding of the second sealing rib 212. This achieves the goal of reducing the thickness of the second sealing rib 212 while meeting the sealing requirements, without affecting demolding, thus achieving a lightweight effect.

[0089] In one embodiment, the transition section 2111 has an inclined angle, and the ejection angle α of the transition section 2111 is 10°, wherein the ejection angle is the angle between the transition section 2111 and the vertical direction. The ejection angle b of the abutment section 2112 is 2°, wherein the ejection angle is the angle between the abutment section 2112 and the vertical direction. The thickness c of the transition section 2111 is 5mm, the thickness d of the surface of the abutment section 2112 near the seal 500 is 6mm, and the height h of the abutment section 2112 is 8mm. This is to reduce the weight of the first sealing rib 211 while meeting the strength requirements of the first sealing rib 211, thus achieving a lightweight effect.

[0090] In other embodiments, the angle difference and the height h of the abutment section 2112 can be flexibly adjusted according to the required wall thickness difference between the transition section 2111 and the abutment section 2112 to obtain a specific wall thickness combination. Specifically, the demolding angle α, based on the definition of rib depth, when the depth of the first sealing rib 211 (i.e., the height of the first sealing rib 211) is greater than 80mm, the demolding angle α of the transition section 2111 is ≥5°; the demolding angle b of the abutment section 2112 is ≥1.5°. Based on this, the height h of the abutment section 2112 increases, and the wall thickness increases. Thus, the thickness of the bottom surface of the abutment section 2112 can be adjusted as needed.

[0091] Reference Figure 5 As shown in Figure 10, in some embodiments, the second sealing portion 310 extends above the battery pack 100, the sealing member 500 is located between the second sealing portion 310 and the battery pack 100, and the second sealing portion 310 is provided with a fixing member 320 for connecting with the battery pack 100, the fixing member 320 being located on the side of the second sealing portion 310 away from the front lower panel 300.

[0092] In some embodiments, the second sealing portion 310 includes a sealing section 311, a connecting section 312, and a mounting section 313 connected in sequence. The mounting section 313 is connected to the lower front panel 300. The sealing section 311 is located above the battery pack 100. A sealing member 500 is disposed between the sealing section 311 and the battery pack 100. The mounting section 313 is located on the battery pack 100. A fixing member 320 is disposed on the mounting section 313 and connected to the battery pack 100.

[0093] For example, the positional relationship between the mounting section 313 and the sealing section 311 can be one of the following three cases, which will not be further restricted here:

[0094] The mounting surface of the mounting section 313 facing the battery pack 100 is higher than the sealing surface of the sealing section 311 facing the battery pack 100; the mounting surface of the mounting section 313 facing the battery pack 100 is flush with the sealing surface of the sealing section 311 facing the battery pack 100; and the mounting surface of the mounting section 313 facing the battery pack 100 is lower than the sealing surface of the sealing section 311 facing the battery pack 100.

[0095] The lower front bulkhead plate 300 and the second sealing part 310 are integrally formed. The lower front bulkhead plate 300 is located on the upper surface of the lower front bulkhead beam 330 to provide a mounting and sealing position. The thickness of the lower front bulkhead plate 300 is less than the thickness of the lower front bulkhead beam 330, thereby reducing the overall weight of the vehicle body and lowering costs. The lower front bulkhead plate 300 and the lower front bulkhead beam 330 are fixed by welding, and sealant is applied between the lower front bulkhead plate 300 and the lower front bulkhead beam 330 to achieve the corresponding connection and sealing requirements. The sealing section 311, the connecting section 312, and the mounting section 313 are integrally formed and connected sequentially. The sealing section 311 extends to the battery pack 100, and a sealing strip is placed between the sealing section 311 and the battery pack 100 to form a complete vehicle seal. The connecting section 312 bends downward so that the mounting section 313 contacts the top surface of the battery pack 100, and the mounting section 313 is fixed to the battery pack 100 by the fastener 320.

[0096] In this embodiment, the bottom surface of the sealing section 311 is the first sealing surface, and the bottom surface of the mounting section 313 is the first mounting surface. There is a gap between the first sealing surface and the first mounting surface. The first sealing surface, the sealing surface of the first sealing part 210, and the sealing surface of the third sealing part 410 are located on the same plane.

[0097] There is a gap between the first sealing surface and the first mounting surface, and the first sealing surface and the first mounting surface are parallel to each other. This makes the sealing surface and the mounting surface of the lower front panel 300 two independent planes. By adjusting the height difference between the first sealing surface and the first mounting surface, the ergonomic, range, and sealing requirements of different vehicles can be flexibly met.

[0098] Increasing the distance between the first sealing surface and the first mounting surface, i.e., decreasing the height of the first mounting surface, increases the space of the passenger compartment. Conversely, decreasing the distance between the first sealing surface and the first mounting surface, i.e., increasing the height of the first mounting surface, increases the capacity of the battery pack 100 and improves the vehicle's range.

[0099] In other embodiments, the first sealing surface and the first mounting surface are disposed on the same plane, so that the sealing surfaces and mounting surfaces between the lower front panel 300, the sill beams 400, the rear end structure 200 of the vehicle body, and the battery pack 100 are all located on the same plane. This unifies the sealing surfaces and mounting surfaces of the battery pack 100 with those of the upper rear end structure 200 of the vehicle body, the lower front panel 300, and the two sill beams 400 onto the same plane. This facilitates the installation of the battery pack 100 with the rear end structure 200 of the vehicle body, the lower front panel 300, and the two sill beams 400, improving installation efficiency.

[0100] The fastener 320 is a bolt or screw. Multiple through holes are provided on the mounting section 313. Bolts pass through these through holes and are threaded into the battery pack 100 to fix the mounting section 313 to the upper surface of the battery pack 100. This connects the lower front panel 300 to the battery pack 100 while simultaneously pressing the sealing strip together, preventing the lower front panel 300 from warping up locally due to the rebound force of the sealing strip, thus improving the sealing effect.

[0101] Reference Figure 5 , Figure 10 , Figure 11 and Figure 12 In some embodiments, the sill beam 400 includes a sill body 420 and a first connecting part 430. The first connecting part 430 is connected to the side of the sill body 420 near the battery pack 100 and is connected to the battery pack 100. A third sealing part 410 is disposed on the first connecting part 430 and is located above the battery pack 100.

[0102] Furthermore, multiple third sealing portions 410 are provided, and a clearance opening 411 is formed between adjacent third sealing portions 410. A seat beam 110 is integrated on the battery pack 100, and the end of the seat beam 110 extends into the clearance opening 411 so that the end of the seat beam 110 is close to the sill body 420.

[0103] Correspondingly, the seal 500 is provided with a clearance section 510, which is located at the clearance opening 411 and extends partially between the first connection 430 and the battery pack 100 to seal the gap between the clearance opening 411 of the sill beam 400 and the battery pack 100.

[0104] An avoidance opening 411 is formed between adjacent third sealing portions 410, and the end of the seat crossbeam 110 is extended into the avoidance opening 411 so that the end of the seat crossbeam 110 is embedded in the third sealing portion 410 of the sill beam 400, so as to minimize the distance between the seat crossbeam 110 and the sill beam 400. After the sill beam 400 is subjected to a side impact, i.e., during the side pillar impact test, the impact force can be directly transmitted to the seat crossbeam 110 so that the seat crossbeam 110 can resist the impact force.

[0105] Furthermore, after the seat crossbeam 110 extends into the clearance opening 411, the end of the seat crossbeam 110 extends beyond the cell sidewall of the battery pack 100200, so that during the process of receiving a side impact, the seat crossbeam 110 bears the impact force before the battery pack 100, thereby reducing the impact on the battery pack 100 and improving the safety of the battery pack 100.

[0106] The first connecting part 430 has a cavity inside, which reduces the weight of the sill beam 400 while improving its ability to withstand lateral impacts. The sill body 420 and the first connecting part 430 are integrally formed. The third sealing part 410 is located on the side of the first connecting part 430 near the battery pack 100.

[0107] In some embodiments, refer to Figure 3 and Figure 4 The battery pack 100 has a second connecting part, which is located on the side of the battery pack 100 near the sill beam 400. The second connecting part is located below the first connecting part 430. Multiple bolts are provided on the second connecting part, and the bolts pass through the second connecting part and connect to the first connecting part 430.

[0108] A nut is pre-installed inside the cavity of the first connecting part 430. The bottom plane of the first connecting part 430 is the mounting surface of the sill beam 400. A hole is opened on the mounting surface of the sill beam 400 so that a bolt can be threaded into the cavity of the first connecting part 430 and connected to the nut. This allows the bolt to be hidden after connecting the first connecting part 430 and the second connecting part, thus providing a certain degree of protection for the bolt connection.

[0109] By connecting the first connecting part 430 and the second connecting part with bolts, on the one hand, the connection between the side of the battery pack 100 and the sill beam 400 is realized, providing support for the battery pack 100; on the other hand, the sealing strip between the third sealing part 410 and the battery pack 100 can be pressed together to achieve a good sealing effect.

[0110] Furthermore, the connection point between the first connecting part 430 and the bolt is offset from the clearance opening 411.

[0111] The bolt connection on the first connecting part 430 is offset from the clearance opening 411, so that the bolt avoids the clearance opening 411. This avoids the inability to seal the battery pack 100 and the sill beam 400 due to the setting of the bolt, or avoids increasing the width of the first connecting part 430, reducing excessive design and thus reducing the weight of the vehicle body.

[0112] The third sealing part 410 is integrally formed with the first connecting part 430. The third sealing part 410 is a plate-shaped structure with a flange. When the second connecting part is bolted to the first connecting part 430, the third sealing part 410 is located at the top of the battery pack 100. The sealing strip is set between the third sealing part 410 and the battery pack 100, thereby forming a seal between the sill beam 400 and the battery pack 100.

[0113] The width of the third sealing portion 410 is set to 25mm-40mm. The width of the third sealing portion 410 is greater than the width of the sealing strip to ensure complete coverage of the sealing strip and improve the sealing effect. For example, the width of the third sealing portion 410 is set to 33mm.

[0114] In the embodiments of this application, the two sides of the clearance opening 411 are third sealing portions 410, and the inner wall of the clearance opening 411 is the side wall of the first connecting portion 430 of the sill beam 400. This is to ensure that the seat crossbeam 110 is as close as possible to the sill beam 400, providing support for the sill beam 400.

[0115] Furthermore, in order to achieve a seal between the sill beam 400 and the battery panel, the sealing strip is adapted to the clearance opening 411, that is, the sealing point between the battery pack 100 and the sill beam 400 is moved between the first connection part 430 and the battery pack 100. In this way, without affecting the sealing and installation of the sill beam 400, the seat crossbeam 110 is brought as close as possible to the sill beam 400 to provide better support.

[0116] The mounting surface of the sill beam 400 and the sealing surface of the third sealing part 410 are located in the same plane. Similarly, the mounting surface of the battery pack 100, i.e., the top plane of the second connecting part, and the sealing surface of the battery pack 100 are also located in the same plane. During installation, when the battery pack 100 is installed upwards, only the flatness of the mounting surfaces needs to be ensured to achieve a flat fit between the sealing surfaces, making installation simpler and improving the installation efficiency of the integrated battery pack 100 and the vehicle body in the CTB structure.

[0117] In some embodiments, refer to Figure 2 The clearance section 510 on the sealing strip is located at the clearance opening 411 and extends between the mounting surface and the top plane of the second connection to seal the gap between the mounting surface and the top plane of the second connection.

[0118] Specifically, the number of clearance sections 510 is set according to the number of seat crossbeams 110. For example, in this embodiment, the number of seat crossbeams 110 is set to two. Therefore, two clearance openings 411 are provided on the third sealing part 410 on one side of the vehicle body structure, and correspondingly, the sealing strip is set to two clearance sections 510.

[0119] Furthermore, the clearance section 510 is trapezoidal, with inclined portions on both sides for connecting to the straight section. The inclined portions are inserted between the first connecting portion 430 and the second connecting portion within the clearance opening 411, ensuring that at the clearance opening 411, the mounting and sealing surfaces of the battery pack 100 and the sill beam 400 are both the connecting planes of the first connecting portion 430 and the second connecting portion. Simultaneously, because the bolt connection is misaligned with the clearance opening 411, the bolt connection does not obstruct the installation of the sealing strip. The bolts on both sides of the clearance opening 411 press the first connecting portion 430, the second connecting portion, and the sealing strip between them to achieve a sealing effect.

[0120] On the other hand, this application provides a vehicle including the above-described body structure.

[0121] The vehicle body structure in this embodiment is the same as that in any of the above embodiments and can bring the same or similar technical effects. It will not be described in detail here, but can be referred to the description of the above embodiments.

[0122] This application provides a vehicle that, by providing a first sealing part 210 on the rear end structure 200 of the vehicle body, a second sealing part 310 on the lower front panel 300, and a third sealing part 410 on the two sill beams 400, decomposes the vehicle body sealing into four areas for sealing. The first sealing part 210, the second sealing part 310, and the two third sealing parts 410 are connected to form an annular sealing structure. The sealing surfaces of the first sealing part 210, the second sealing part 310, and the third sealing part 410 are all located on the same plane and seal with the sealing element 500 on the battery pack 100. This ensures that the sealing surfaces of the entire vehicle body are all located in the same plane, avoiding the situation where the sealing element 500 switches between different sealing surfaces between different components, which is beneficial to improving the overall sealing effect of the vehicle. At the same time, it facilitates the installation of the integrated battery pack 100 and the sealing element 500, improving installation efficiency, and is suitable for vehicle body sealing in CTB structures.

[0123] 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.

[0124] 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, include: A battery pack (100) is configured as a vehicle floor constituting a vehicle body structure; A rear end structure (200) of the vehicle body, wherein a first sealing part (210) is provided on the rear end structure (200); The lower front panel (300) is provided with a second sealing part (310); Two door sill beams (400), each door sill beam (400) having a third sealing part (410); The rear end structure (200) and the lower front panel (300) are respectively connected to the two ends of the two door sill beams (400) so that the first sealing part (210), the second sealing part (310) and the two third sealing parts (410) are connected to form an annular sealing structure. The sealing surfaces of the first sealing part (210), the second sealing part (310) and the third sealing part (410) facing the battery pack (100) are located on the same plane, and the annular sealing structure is located above the battery pack (100). A seal (500) is located between the battery pack (100) and the annular sealing structure to seal the gap between the battery pack (100) and the annular sealing structure.

2. The vehicle body structure according to claim 1, characterized in that, The mounting surface of the rear end structure (200) facing the battery pack (100) and the sealing surface of the first sealing part (210) facing the battery pack (100) are on the same plane.

3. The vehicle body structure according to claim 1, characterized in that, The mounting surface of the lower front panel (300) facing the top cover of the battery pack (100) and the sealing surface of the second sealing part (310) facing the battery pack (100) are on the same plane.

4. The vehicle body structure according to claim 1, characterized in that, The mounting surface of the threshold beam (400) facing the top cover of the battery pack (100) and the sealing surface of the third sealing part (410) facing the battery pack (100) are on the same plane.

5. The vehicle body structure according to claim 2, characterized in that, The mounting surface of the rear end structure (200) facing the battery pack (100) and the mounting surface of the sill beam (400) facing the top cover of the battery pack (100) are on the same plane.

6. The vehicle body structure according to claim 2, characterized in that, The mounting surfaces of the rear end structure (200) facing the battery pack (100), the mounting surfaces of the sill beam (400) facing the top cover of the battery pack (100), and the mounting surfaces of the lower front panel (300) facing the top cover of the battery pack (100) are all located on the same plane.

7. The vehicle body structure according to any one of claims 1-6, characterized in that, The thickness of the first sealing part (210) near the bottom of the sealing member (500) is greater than the thickness of the middle part of the first sealing part (210), and the surface of the first sealing part (210) near the sealing member (500) abuts against the sealing member (500).

8. The vehicle body structure according to claim 7, characterized in that, The first sealing part (210) includes a first sealing rib (211) and two second sealing ribs (212). The two first sealing ribs (212) are respectively connected to both sides of the first sealing rib (211). The rear end structure (200) of the vehicle body is provided with a mounting boss (220). The first sealing rib (211) is located below the mounting boss (220) and abuts against the sealing element (500). The second sealing ribs (212) are located outside the mounting boss (220) and are provided with a flange (213). The flange (213) abuts against the sealing element (500).

9. The vehicle body structure according to claim 1, characterized in that, The second sealing part (310) is provided with a fastener (320) for connecting with the battery pack (100), and the fastener (320) is located on the side of the second sealing part (310) away from the lower front panel (300).

10. The vehicle body structure according to claim 9, characterized in that, The second sealing part (310) includes a sealing section (311), a connecting section (312), and a mounting section (313) connected in sequence. The mounting section (313) is connected to the lower front panel (300). The sealing section (311) is located above the battery pack (100). The sealing member (500) is disposed between the sealing section (311) and the battery pack (100). The mounting section (313) is located on the battery pack (100). The fixing member (320) is disposed on the mounting section (313).

11. The vehicle body structure according to claim 10, characterized in that, There is a gap between the sealing section (311) near the battery pack (100) and the mounting section (313) near the battery pack (100).

12. The vehicle body structure according to any one of claims 1-6, characterized in that, The threshold beam (400) includes a threshold body (420) and a first connecting part (430). The first connecting part (430) is connected to the side of the threshold body (420) near the battery pack (100) and is connected to the battery pack (100). The third sealing part (410) is disposed on the first connecting part (430).

13. The vehicle body structure according to claim 12, characterized in that, The third sealing part (410) is provided in multiple ways, and a clearance opening (411) is formed between adjacent third sealing parts (410). A seat beam (110) is provided on the battery pack (100), and the end of the seat beam (110) extends into the clearance opening (411) so that the end of the seat beam (110) is close to the sill body (420).

14. The vehicle body structure according to claim 13, characterized in that, The seal (500) is provided with a clearance section (510), which is located at the clearance opening (411) and extends partially between the first connection (430) and the battery pack (100) to seal the gap between the clearance opening (411) of the sill beam (400) and the battery pack (100).

15. A vehicle, characterized in that, Including the vehicle body structure as described in any one of claims 1-14.

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