Vehicle body structure and vehicle

Abstract

A vehicle body structure and a vehicle. The vehicle body structure comprises: a battery pack (100), configured to constitute a vehicle body floor of the vehicle body structure; a vehicle body rear structure (200), provided with a first sealing portion (210); a lower cowl panel (300), provided with a second sealing portion (310); two sill beams (400), each sill beam being provided with a third sealing portion (410), the vehicle body rear structure and the lower cowl panel respectively being connected to two ends of the two sill beams, such that the first sealing portion, the second sealing portion, and the two third sealing portions are connected to form an annular sealing structure, the surfaces of the first sealing portion, the second sealing portion, and the third sealing portions facing the battery pack all being located on the same plane, and the annular sealing structure being located above the battery pack; and a sealing member (500), located between the battery pack and the annular sealing structure to seal a gap between the battery pack and the annular sealing structure. The described vehicle body structure allows vehicle body sealing to be disposed in the same plane, thereby facilitating vehicle body sealing in a CTB structure.

Description

A vehicle body structure and a vehicle

[0001] The present application claims priority to the Chinese patent application No. 2024112703675, filed on September 11, 2024, and entitled "A vehicle body structure and a vehicle", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to, but is not limited to, the technical field of vehicles, and in particular to a vehicle body structure and a vehicle. BACKGROUND

[0003] With the development of new energy vehicles, significant progress has been made in technology development and market popularization in recent years. Battery technology, as the core part of electric vehicles, is also constantly innovating and optimizing.

[0004] Battery pack technology is developing 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 requirement of the battery pack, so that the battery pack can be more closely attached to the vehicle body, thereby reducing the overall size of the vehicle. The CTP vehicle body structure has a traditional vehicle body floor panel, and the overall sealing function of the vehicle is divided into multiple sections between the vehicle body floor panel, the front lower panel, the second-row seat middle beam, the second-row seat rear beam, and the door sill inner panel and the vehicle body floor. The battery is located below the floor panel. In the CTB vehicle body structure, the battery pack is integrated with the vehicle body structure, and the battery pack serves as the vehicle body floor. The overall sealing of the vehicle body is combined with the battery pack.

[0005] However, dividing the sealing into multiple sections 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

[0006] The following is a brief summary of subject matter that is described in detail herein.This summary is not intended to be liming as to the scope of the claims.

[0007] The application provides a vehicle body structure and a vehicle, which solve the problem that in a CTB vehicle body structure, sealing is divided into multiple sections for separate sealing, different sealing surfaces need to be switched between different components during the sealing process, and the installation of a battery pack is not facilitated.

[0008] In one aspect, the application provides a vehicle body structure, comprising:

[0009] a battery pack configured to constitute a vehicle body floor of the vehicle body structure;

[0010] a rear end structure of the vehicle body, which is provided with a first sealing part;

[0011] a front lower panel, which is provided with a second sealing part;

[0012] two rocker beams, which are provided with third sealing parts;

[0013] the rear end structure of the vehicle body and the front lower panel are respectively connected to two ends of the two rocker beams, so that the first sealing part, the second sealing part and the two third sealing parts are connected to form a ring-shaped sealing structure, the first sealing part, the second sealing part and the third sealing parts are located on the same plane towards the battery pack, and the ring-shaped sealing structure is located above the battery pack;

[0014] a sealing member located between the battery pack and the ring-shaped sealing structure to seal the gap between the battery pack and the ring-shaped sealing structure.

[0015] In some embodiments, the mounting surface of the rear end structure of the vehicle body towards the battery pack is located on the same plane as the sealing surface of the first sealing part towards the battery pack.

[0016] In some embodiments, the mounting surface of the front lower panel towards the upper cover of the battery pack is located on the same plane as the sealing surface of the second sealing part towards the battery pack.

[0017] In some embodiments, the mounting surface of the rocker beam towards the upper cover of the battery pack is located on the same plane as the sealing surface of the third sealing part towards the battery pack.

[0018] In some embodiments, the mounting surface of the rear end structure of the vehicle body towards the battery pack and the mounting surface of the rocker beam towards the upper cover of the battery pack are located on the same plane.

[0019] In some embodiments, the mounting surface of the rear end structure of the vehicle body towards the battery pack, the mounting surface of the rocker beam towards the upper cover of the battery pack and the mounting surface of the front lower panel towards the upper cover of the battery pack are located on the same plane.

[0020] In some embodiments, the first sealing portion has a thickness near the bottom of the sealing member that is greater than a thickness of a middle portion of the first sealing portion, and a face of the first sealing portion near the sealing member abuts the sealing member.

[0021] In some embodiments, the first sealing portion includes a first sealing rib and two second sealing ribs, the two first sealing ribs are respectively connected on both sides of the first sealing rib, a mounting boss is arranged on the rear end structure of the vehicle body, the first sealing rib is located below the mounting boss, the first sealing rib abuts the sealing member, the second sealing ribs are located on the outer side of the mounting boss, a flange portion is arranged on the second sealing rib, and the flange portion abuts the sealing member.

[0022] In some embodiments, the second sealing portion is provided with a fixing member for connecting with the battery pack, and the fixing member is located on a side of the second sealing portion away from the lower panel of the front wall.

[0023] In some embodiments, the second sealing portion includes a sealing segment, a connecting segment and a mounting segment connected in sequence, the mounting segment is connected with the lower panel of the front wall, the sealing segment is located above the battery pack, the sealing member is arranged between the sealing segment and the battery pack, the mounting segment is located on the battery pack, and the fixing member is arranged on the mounting segment.

[0024] In some embodiments, the sealing segment has a spacing between a face of the sealing segment near the battery pack and a face of the mounting segment near the battery pack.

[0025] In some embodiments, the rocker beam includes a rocker body and a first connecting portion, the first connecting portion is connected on a side of the rocker body near the battery pack, the first connecting portion is connected with the battery pack, and the third sealing portion is arranged on the first connecting portion.

[0026] In some embodiments, a plurality of third sealing portions are arranged, a clearance is formed between adjacent third sealing portions, a seat cross beam is integrated on the battery pack, an end portion of the seat cross beam extends into the clearance, so that the end portion of the seat cross beam is close to the rocker body.

[0027] In some embodiments, an avoiding segment is arranged on the sealing member, the avoiding segment is located at the clearance and partially extends between the first connecting portion and the battery pack, so as to seal a gap between the clearance of the rocker beam and the battery pack.

[0028] In another aspect, the application provides a vehicle including the vehicle body structure described above.

[0029] The vehicle body structure and the vehicle provided by the application, the vehicle body structure is provided with a first sealing part on the rear end structure of the vehicle body, a second sealing part on the lower panel of the front wall, and a third sealing part on the two rocker beams, so that the sealing of the vehicle body is divided into four areas for sealing, and the first sealing part, the second sealing part and the two third sealing parts are connected to form a ring-shaped sealing structure, the sealing surfaces of the first sealing part, the second sealing part and the third sealing part are located on the same plane and seal with the sealing element on the battery pack, so that the sealing surfaces of the overall vehicle body sealing are located on the same plane, avoiding the switching of the sealing element between different components and different sealing surfaces, which is beneficial to improving the sealing effect of the vehicle, and at the same time, the installation of the integrated battery pack and the sealing element is facilitated, the installation efficiency is improved, and the vehicle body sealing in the CTB structure is applicable. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0031] Fig. 1 is an exploded schematic view of the vehicle body structure provided by the embodiment of the application;

[0032] Fig. 2 is a structural schematic view of the vehicle body structure provided by the embodiment of the application;

[0033] Fig. 3 is a schematic view of the connection structure of the rocker beam and the lower panel of the front wall in Fig. 2;

[0034] Fig. 4 is a schematic view of the connection structure of the rocker beam and the rear end structure of the vehicle body in Fig. 2;

[0035] Fig. 5 is a sealing area division diagram in Fig. 2;

[0036] Fig. 6 is a schematic view of the sealing structure between the rear end structure of the vehicle body and the battery pack in Fig. 2;

[0037] Fig. 7 is a schematic view of the connection structure of the first sealing rib in Fig. 6;

[0038] Fig. 8 is an enlarged schematic view of the structure of the first sealing rib in Fig. 6;

[0039] Fig. 9 is a schematic view of the connection structure of the second sealing rib in Fig. 6;

[0040] Fig. 10 is a schematic view of the sealing structure between the lower panel of the front wall and the battery pack in Fig. 2;

[0041] Fig. 11 is a schematic view of the sealing structure between the rocker beam and the battery pack in Fig. 2;

[0042] Fig. 12 is a sectional view of the rocker beam and the battery pack in Fig. 11.

[0043] Explanation of reference signs: 100, battery pack; 110, seat cross beam; 200, vehicle body rear end structure; 210, first sealing portion; 211, first sealing rib; 2111, transition section; 2112, abutment section 2112; 212, second sealing rib; 213, flange portion; 220, mounting boss; 300, front wall lower panel; 310, second sealing portion; 311, sealing section; 312, connecting section; 313, mounting section; 320, fixing member; 330, front wall lower cross beam; 400, rocker cross beam; 410, third sealing portion; 411, avoidance opening; 420, rocker main body; 430, first connecting portion; 500, sealing member; 510, avoidance section.

[0044] The specific embodiments of the present application have been shown and described in the above-described drawings and specification, and it is to be understood that the above-described embodiments are merely illustrative of the principles of the present application, the scope of which is not to be limited to the above-described embodiments but is to be accorded the full scope consistent with the principles and novel features disclosed herein. DETAILED DESCRIPTION

[0045] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description herein is intended for illustrating the principles of the present application by reference to particular examples. Therefore, the description is not meant to limit the scope of the present application but to explain the principles of the present application by reference to the particular examples.

[0046] It is to be noted that the terms "first", "second", and the like, do not denote any order, quantity, combination, or importance, but are used to distinguish one element from another. Thus, a feature defined with "first", "second", etc. can include at least one of the features. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined.

[0047] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "fixed", and the like, are to be broadly interpreted, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection, or communication with each other; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless specifically stated and limited otherwise, a first feature is "on" or "under" a second feature if the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0049] Cell to Pack (CTP) technology is a battery pack integration technology that directly integrates battery cells into the battery pack, skipping the traditional module link, thereby improving space utilization and energy density.

[0050] Cell to Body (CTB) technology is a technology that directly integrates the battery pack into the vehicle body structure, taking the upper cover body of the battery pack as the vehicle floor.

[0051] With the development of new energy vehicles, significant progress has been made in technology development and market popularization in recent years. Battery technology, as the core part of electric vehicles, is also constantly innovating and optimizing.

[0052] Battery pack technology is developing 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 requirement of the battery pack, allowing the battery pack to be more closely attached to the vehicle body, thereby reducing the overall size of the vehicle. The CTP vehicle body structure has a traditional vehicle floor panel, and the overall sealing function of the vehicle is achieved by the sealing between the vehicle floor panel, the lower panel of the front wall, the middle beam of the second row seat, the rear beam of the second row seat and the inner panel of the rocker. The battery is located in the lower part of the floor panel.

[0053] However, in the CTB vehicle body structure, the battery pack is integrated with the vehicle body structure, and the sealing method in the CTP vehicle body structure is not applicable to the CTB vehicle body structure.

[0054] To solve the above problems, the application provides a vehicle body structure and a vehicle. The vehicle body structure is provided with a first sealing part on a rear end structure of the vehicle body, a second sealing part on a lower panel of a front wall, and a third sealing part on two rocker beams, so as to divide the sealing of the vehicle body into four areas and seal the four areas, and the first sealing part, the second sealing part, and the two third sealing parts are connected to form a ring-shaped sealing structure, the sealing surfaces of the first sealing part, the second sealing part, and the third sealing parts are located on the same plane and seal with a sealing member on a battery pack; so that the sealing surfaces of the overall sealing of the vehicle body are located on the same plane, avoiding the switching of the sealing member between different components and different sealing surfaces, which is beneficial to improving the sealing effect of the vehicle, and at the same time, facilitates the installation of the integrated battery pack and the sealing member, improves the installation efficiency, and is suitable for the sealing of the vehicle body in the CTB structure.

[0055] The technical solutions of the application and how the technical solutions solve the above technical problems will be described in detail below with specific embodiments. The following 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 the application will be described below with reference to the drawings.

[0056] In one aspect, the application provides a vehicle body structure, referring to FIGS. 1-12, the vehicle body structure comprises:

[0057] a battery pack 100, the battery pack 100 is configured to constitute a vehicle floor of the vehicle body structure;

[0058] a rear end structure 200 of the vehicle body, the rear end structure 200 is provided with a first sealing part 210;

[0059] a lower panel 300 of the front wall, the lower panel 300 of the front wall is provided with a second sealing part 310;

[0060] two rocker beams 400, the rocker beams 400 are provided with a third sealing part 410;

[0061] The rear end structure 200 and the lower panel 300 of the front wall are respectively connected to two ends of the two rocker 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 a ring-shaped sealing structure, the surfaces of the first sealing part 210, the second sealing part 310, and the third sealing part 410 towards the battery pack 100 are located on the same plane, and the ring-shaped sealing structure is located above the battery pack 100;

[0062] a sealing member 500 located between the battery pack 100 and the ring-shaped sealing structure, so as to seal the gap between the battery pack 100 and the ring-shaped sealing structure.

[0063] The sealing member 500 is a sealing strip. The sealing strip can be a rubber sealing strip, for example. The sealing strip is compressible, and the sealing between the battery pack 100 and the vehicle body structure is achieved by compressing the sealing strip. The sealing strip is a complete annular structure, which is matched with the first sealing portion 210, the second sealing portion 310, and the two third sealing portions 410 to form an annular sealing structure, thereby avoiding interruption of the sealing strip and improving the sealing effect.

[0064] The battery pack 100 is provided with a plurality of ears at both ends. The ears at one end of the battery pack 100 are connected to the front lower cross beam 330 on the front lower panel 300, and the ears at the other end are connected to the rear end structure 200 of the vehicle body, so as to form the main load-bearing support of the battery pack 100. In addition, the upper cover of the battery pack 100 is connected to the rocker 400, the front lower panel 300, and the rear end structure 200 of the vehicle body, so as to further form a support and close the vehicle floor formed by the upper cover of the battery pack 100, and provide a mounting position for vehicle sealing. The rear end structure 200 is used for mounting rear seats, seat belts, and other rear end structures, and is equivalent to the rear floor structure of other vehicles.

[0065] By adopting the above technical solution, the sealing of the vehicle body is divided into four areas, i.e., the sealing between the rear end structure 200 of the vehicle body and the battery pack 100 (as shown by the dashed box a in FIG. 5), the sealing between the front lower panel 300 and the battery pack 100 (as shown by the dashed box b in FIG. 5), and the sealing between the two rockers 400 and the battery pack 100 (as shown by the dashed box c in FIG. 5). Compared with the conventional vehicle body sealing method, which requires sealing to be divided into six or more areas and sealed in each area, the sealing is more convenient and the corresponding parts are reduced.

[0066] The sealing surfaces of the first sealing portion 210, the second sealing portion 310, and the third sealing portion 410 are located on the same plane. The sealing strip is pre-installed on the upper cover of the battery pack 100 and sealed with the sealing member 500 on the battery pack 100. The sealing surfaces of the overall vehicle body sealing are located on the same plane, which avoids switching of different sealing surfaces of the sealing member 500 between different components, improves the overall vehicle sealing effect, facilitates installation of the integrated battery pack 100 and sealing member 500, and improves the installation efficiency, so as to be applicable to vehicle body sealing in the CTB structure.

[0067] The front lower panel 300 has the front lower cross beam 330, and the two ends of the front lower cross beam 330 are partially overlapped with the end portions of the rocker 400 and are fixed by bolts.

[0068] The second sealing portion 310 on the front lower panel 300 and the third sealing portion 410 on the rocker beam 400 are located in the same plane, and the second sealing portion 310 and the third sealing portion 410 are in contact, and a flange is arranged at the end of the second sealing portion 310 or the third sealing portion 410 to lap on the third sealing portion 410 or the second sealing portion 310, so as to reduce the generation of a sealing gap and improve the sealing effect.

[0069] Referring to FIGS. 2 and 4, the front end structure 200 is provided with a flange at both ends, the flange on the front end structure 200 is located above the first sealing portion 210, the flange laps on the rocker beam 400, and the first sealing portion 210 and the third sealing portion 410 are located in the same plane, and the end of the first sealing portion 210 abuts against the third sealing portion 410 to reduce the sealing gap.

[0070] In some embodiments, the mounting surface of the rear end structure of the vehicle body towards the battery pack 100 is located in the same plane as the sealing surface of the first sealing portion 210 towards the battery pack 100.

[0071] In some embodiments, the mounting surface of the rear end structure of the vehicle body towards the battery pack 100 is located in the same plane as the sealing surface of the first sealing portion 210 towards the battery pack 100.

[0072] In some embodiments, the mounting surface of the front lower panel 300 towards the upper cover of the battery pack 100 is located in the same plane as the sealing surface of the second sealing portion 310 towards the battery pack 100.

[0073] In some embodiments, the mounting surface of the front lower panel 300 towards the upper cover of the battery pack 100 is located in the same plane as the sealing surface of the second sealing portion 310 towards the battery pack 100.

[0074] In some embodiments, the mounting surface of the front lower panel 300 towards the upper cover of the battery pack 100 is located in the same plane as the sealing surface of the second sealing portion 310 towards the battery pack 100.

[0075] The side of the threshold beam 400 facing the upper cover side of the battery pack 100 is the mounting surface, and the side of the third sealing portion 410 facing the side of the battery pack 100 is the sealing surface. The sealing surface and the mounting surface between the threshold beam 400 and the battery pack 100 are located on the same plane, so as to facilitate the installation between the battery pack and the threshold beam 400, and reduce the number of planes that need to be positioned between the threshold beam 400 and the battery pack 100 during installation, thereby improving the installation efficiency.

[0076] In some embodiments, the mounting surface of the rear end structure 200 facing the side of the battery pack 100 and the mounting surface of the threshold beam 400 facing the upper cover side of the battery pack 100 are located on the same plane.

[0077] In this embodiment, the sealing surface and the mounting surface between the threshold beam 400, the rear end structure 200 and the battery pack 100 are located on the same plane, and the sealing surfaces of the first sealing portion 210, the second sealing portion 310 and the third sealing portion 410 are also located on the same plane. In this way, the sealing surfaces of the battery pack 100, the rear end structure 200, the front floor panel 300 and the two threshold beams 400 are unified, and most of the mounting surfaces are unified, so as to facilitate the installation between the battery pack 100 and the rear end structure 200, the front floor panel 300 and the two threshold beams 400, and improve the installation efficiency.

[0078] In some embodiments, the mounting surface of the rear end structure 200 facing the side of the battery pack 100, the mounting surface of the threshold beam 400 facing the upper cover side of the battery pack 100 and the mounting surface of the front floor panel 300 facing the upper cover side of the battery pack 100 are located on the same plane.

[0079] In this embodiment, the sealing surface and the mounting surface between the threshold beam 400, the rear end structure 200 and the battery pack 100 are located on the same plane. In this way, the sealing surfaces and the mounting surfaces of the battery pack 100, the rear end structure 200, the front floor panel 300 and the two threshold beams 400 are unified to the same plane. The positioning surface during the installation of the battery pack 100 is unified to the same plane, so as to facilitate the installation between the battery pack 100 and the rear end structure 200, the front floor panel 300 and the two threshold beams 400, and improve the installation efficiency.

[0080] In some embodiments, referring to FIGS. 6, 7, 8 and 9, the thickness of the first sealing portion 210 near the bottom of the sealing member 500 is greater than the thickness of the middle portion of the first sealing portion 210, and the side of the first sealing portion 210 near the sealing member 500 abuts against the sealing member 500.

[0081] Referring to FIGS. 5, 6, 7, 8 and 9, in some embodiments, the first sealing part 210 includes a first sealing rib 211 and two second sealing ribs 212, the two second sealing ribs 212 are respectively connected on both sides of the first sealing rib 211, the mounting boss 220 is arranged on the vehicle body rear end structure 200, the first sealing rib 211 is located below the mounting boss 220, and the first sealing rib 211 abuts against the sealing piece 500; the second sealing rib 212 is located outside the mounting boss 220, and the second sealing rib 212 is provided with a flange part 213 abutting against the sealing piece 500.

[0082] Specifically, the first sealing rib 211 is integrally formed with the vehicle body rear end structure 200, and the vehicle body rear end structure 200 is manufactured in the form of die casting. The first sealing rib 211 is arranged on the vehicle body rear end structure 200, and the first sealing rib 211 is located below the mounting boss 220. Referring to FIG. 8, the first sealing rib 211 includes a transition section 2111 and an abutting section 2112, the thickness of the abutting section 2112 near the sealing piece 500 is greater than the thickness of the transition section 2111, and the abutting section 2112 is used for abutting 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.

[0083] The second sealing rib 212 is located outside the mounting boss 220, and the second sealing rib 212 is provided with a flange part 213 abutting against the sealing strip. The face of the abutting section 2112 near the sealing piece 500 and the face of the flange part 213 near the sealing piece 500 are located in the same plane.

[0084] The mounting boss 220 is arranged in the middle of the vehicle body rear end structure 200, and the mounting boss 220 protrudes from the edge of the vehicle body rear end structure 200 and the first sealing rib 211, and the mounting boss 220 is used for mounting the upper structure of the vehicle body rear end structure 200.

[0085] The rear end structure 200 is a die casting. In order to facilitate smooth demolding of the rear end structure 200, the transition section 2111 of the first sealing rib 211 is smoothly connected with the abutting section 2112. The thickness of the end of the abutting section 2112 connected with the transition section 2111 is equal to the thickness of the transition section 2111. The thickness of the abutting section 2112 away from the transition section 2111 is greater than the thickness of the transition section 2111. The side wall of the abutting section 2112 is arranged in a slope to smoothly increase the thickness of the bottom surface of the abutting section 2112. The cross section of the abutting section 2112 is in a trapezoidal shape in height. The second sealing rib 212 is located on the side of the mounting boss 220, so that the upper and lower sides of the second sealing rib 212 are not blocked by demolding. The flange part 213 on the second sealing rib 212 is demolded from the upper and lower directions through the upper and lower molds, that is, the demolding of the second sealing rib 212 is realized. Thus, while meeting the sealing needs, the thickness of the second sealing rib 212 is reduced, and the demolding is not affected, achieving the effect of lightweight.

[0086] In an embodiment, the transition section 2111 has an inclination angle. The demolding angle a of the transition section 2111 is 10°, wherein the demolding angle is the angle between the transition section 2111 and the vertical direction. The demolding angle b of the abutting section 2112 is 2°, wherein the demolding angle is the angle between the abutting section 2112 and the vertical direction. The thickness c of the transition section 2111 is 5 mm. The thickness d of the face of the abutting section 2112 close to the sealing member 500 is 6 mm. The height h of the abutting section 2112 is 8 mm. Thus, while meeting the strength requirement of the first sealing rib 211, the weight of the first sealing rib 211 is reduced, achieving the effect of lightweight.

[0087] In other embodiments, the angle difference and the height h of the abutting section 2112 can be flexibly adjusted according to the required wall thickness difference of the transition section 2111 and the abutting section 2112 to obtain a specific wall thickness combination. The demolding angle a is defined according to the depth of the rib. When the depth (i.e., the height) of the first sealing rib 211 is greater than 80 mm, the demolding angle a of the transition section 2111 is greater than or equal to 5°. The demolding angle b of the abutting section 2112 is greater than or equal to 1.5°. On this basis, the height h of the abutting section 2112 is increased, and the wall thickness is thickened. Thus, the thickness of the bottom surface of the abutting section 2112 can be adjusted as required.

[0088] Referring to FIGS. 5 and 10, in some embodiments, the second sealing part 310 extends above the battery pack 100. The sealing member 500 is located between the second sealing part 310 and the battery pack 100. The second sealing part 310 is provided with a fixing member 320 for connecting with the battery pack 100. The fixing member 320 is located on the side of the second sealing part 310 away from the front lower panel 300.

[0089] In some embodiments, the second sealing part 310 comprises a sealing section 311, a connecting section 312 and a mounting section 313 connected in sequence, the mounting section 313 is connected with the front lower plate 300, the sealing section 311 is located above the battery pack 100, the sealing member 500 is arranged between the sealing section 311 and the battery pack 100, the mounting section 313 is located on the battery pack 100, and the fixing member 320 is arranged on the mounting section 313 and connected with the battery pack 100.

[0090] For example, the mounting section 313 and the sealing section 311 have the following three positional relationships, which are not limited here:

[0091] The mounting surface of the mounting section 313 towards the battery pack 100 is higher than the sealing surface of the sealing section 311 towards the battery pack 100, the mounting surface of the mounting section 313 towards the battery pack 100 is flush with the sealing surface of the sealing section 311 towards the battery pack 100, and the mounting surface of the mounting section 313 towards the battery pack 100 is lower than the sealing surface of the sealing section 311 towards the battery pack 100.

[0092] The front lower plate 300 is integrally formed with the second sealing part 310, the front lower plate 300 is arranged on the upper surface of the front lower cross beam 330 to provide mounting and sealing positions, the thickness of the front lower plate 300 is less than the thickness of the front lower cross beam 330, thereby reducing the overall mass of the vehicle body while reducing costs. The front lower plate 300 and the front lower cross beam 330 are fixed by welding, and sealing glue is applied between the front lower plate 300 and the front lower cross beam 330 to meet the corresponding connection and sealing requirements. The sealing section 311, the connecting section 312 and the mounting section 313 are integrally formed and connected in sequence. The sealing section 311 extends onto the battery pack 100, and the sealing strip is arranged between the sealing section 311 and the battery pack 100 to form the overall vehicle sealing. The connecting section 312 is bent downward to make the mounting section 313 contact the top surface of the battery pack 100, and the mounting section 313 is fixed on the battery pack 100 by the fixing member 320.

[0093] In the embodiments of the present application, the bottom surface of the sealing section 311 is a first sealing surface, the bottom surface of the mounting section 313 is a first mounting surface, and the first sealing surface and the first mounting surface have a spacing therebetween. The first sealing surface is located on the same plane as the sealing surface of the first sealing part 210 and the sealing surface of the third sealing part 410.

[0094] The first sealing surface and the first mounting surface have a spacing therebetween, and the first sealing surface and the first mounting surface are parallel to each other. The sealing surface and the mounting surface of the front lower plate 300 are two independent planes. By adjusting the height difference between the first sealing surface and the first mounting surface, different vehicle man-machine requirements, endurance requirements and sealing requirements can be flexibly met.

[0095] When the distance between the first sealing surface and the first mounting surface increases, that is, the height of the first mounting surface decreases, the space of the passenger compartment is increased. When the distance between the first sealing surface and the first mounting surface decreases, that is, the height of the first mounting surface increases, the capacity of the battery pack 100 can be increased, and the endurance of the vehicle can be improved.

[0096] In other embodiments, the first sealing surface and the first mounting surface are arranged on the same plane, so that the sealing surface and the mounting surface between the front lower panel 300, the rocker beam 400, the rear end structure 200 of the vehicle body and the battery pack 100 are located on the same plane. So that the sealing surface and the mounting surface of the battery pack 100 and the upper rear end structure 200 of the vehicle body, the front lower panel 300 and the two rocker beams 400 are unified to the same plane. In order to facilitate the installation between the battery pack 100 and the rear end structure 200 of the vehicle body, the front lower panel 300 and the two rocker beams 400, improve the efficiency of installation.

[0097] The fixing member 320 is a bolt or a screw. A plurality of through holes are formed on the mounting section 313, and the bolt is screwed through the through hole and connected with the battery pack 100, so as to fix the mounting section 313 on the upper surface of the battery pack 100, realize the connection between the front lower panel 300 and the battery pack 100, and at the same time, the sealing strip is pressed tightly, avoiding the local upwarping of the front lower panel 300 caused by the rebounding force of the sealing strip, and improving the sealing effect.

[0098] Referring to FIGS. 5, 10, 11 and 12, in some embodiments, the rocker beam 400 includes a rocker beam body 420 and a first connecting portion 430 connected to one side of the rocker beam body 420 close to the battery pack 100, the first connecting portion 430 is connected with the battery pack 100, and the third sealing portion 410 is arranged on the first connecting portion 430 and located above the battery pack 100.

[0099] Further, the third sealing portion 410 is provided in plurality, and the adjacent third sealing portions 410 form an avoiding opening 411, the seat cross beam 110 is integrated on the battery pack 100, and the end portion of the seat cross beam 110 extends into the avoiding opening 411, so that the end portion of the seat cross beam 110 is close to the rocker beam body 420.

[0100] Correspondingly, the sealing member 500 is provided with an avoiding section 510, the avoiding section 510 is located at the avoiding opening 411 and partially extends between the first connecting portion 430 and the battery pack 100, so as to seal the gap between the avoiding opening 411 of the rocker beam 400 and the battery pack 100.

[0101] The gap 411 is formed between the adjacent third sealing portions 410, and the end of the seat cross beam 110 extends into the gap 411, so that the end of the seat cross beam 110 is embedded into the third sealing portion 410 of the rocker beam 400, so as to reduce the distance between the seat cross beam 110 and the rocker beam 400 as much as possible, and when the rocker beam 400 is subjected to a side impact, i.e. in a side impact test, the impact force can be directly transmitted to the seat cross beam 110, so as to resist the impact force through the seat cross beam 110.

[0102] Further, after the seat cross beam 110 extends into the gap 411, the end of the seat cross beam 110 exceeds the cell side wall of the battery pack 100200, so that in the process of receiving a side impact, the seat cross beam 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.

[0103] The first connecting portion 430 has a cavity inside, which can reduce the weight of the rocker beam 400 and improve the ability to withstand side impact, and the rocker body 420 and the first connecting portion 430 are integrally formed. The third sealing portion 410 is located on the side of the first connecting portion 430 close to the battery pack 100.

[0104] In some embodiments, referring to FIGS. 3 and 4, the battery pack 100 has a second connecting portion provided on the side of the battery pack 100 close to the rocker beam 400, the second connecting portion is located below the first connecting portion 430, and a plurality of bolts are provided on the second connecting portion and connected with the first connecting portion 430.

[0105] The cavity inside the first connecting portion 430 is pre-provided with a nut, and the bottom plane of the first connecting portion 430 is a rocker beam 400 mounting surface, and a hole is formed on the rocker beam 400 mounting surface to allow the bolt to pass through the cavity inside the first connecting portion 430 and be threadedly connected with the nut. Thus, the bolt is connected with the first connecting portion 430 and the second connecting portion in a hidden state, which protects the bolt connection.

[0106] By connecting the first connecting portion 430 and the second connecting portion with the bolt, on the one hand, the connection of the side of the battery pack 100 and the rocker beam 400 is realized, and support is provided for the battery pack 100; on the other hand, the sealing strip between the third sealing portion 410 and the battery pack 100 can be compressed to achieve good sealing effect.

[0107] Further, the connection between the first connecting portion 430 and the bolt is disposed in a staggered manner with the gap 411.

[0108] The bolt on the first connecting part 430 is misaligned with the avoiding opening 411, so that the bolt avoids the avoiding opening 411, avoids that the sealing between the battery pack 100 and the rocker beam 400 cannot be set due to the bolt, or avoids increasing the width of the first connecting part 430, reduces the excess design, and reduces the weight of the vehicle body.

[0109] The third sealing part 410 is integrally formed with the first connecting part 430, and the third sealing part 410 is a flanged plate structure. 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, and the sealing strip is arranged between the third sealing part 410 and the battery pack 100, thereby forming the sealing between the rocker beam 400 and the battery pack 100.

[0110] The width of the third sealing part 410 is 25mm-40mm. The width of the third sealing part 410 is greater than the width of the sealing strip, so as to completely cover the sealing strip and improve the sealing effect. For example, the width of the third sealing part 410 is 33mm.

[0111] In the embodiments of the present application, the two sides of the avoiding opening 411 are the third sealing part 410, and the inner wall of the avoiding opening 411 is the side wall of the first connecting part 430 of the rocker beam 400. In this way, the seat cross beam 110 is as close as possible to the rocker beam 400, and the rocker beam 400 is provided with support.

[0112] In addition, in order to realize the sealing between the rocker beam 400 and the battery pack, the sealing strip is matched with the avoiding opening 411, that is, the sealing between the battery pack 100 and the rocker beam 400 is transferred to between the first connecting part 430 and the battery pack 100, and then the seat cross beam 110 is as close as possible to the rocker beam 400 without affecting the sealing and installation of the rocker beam 400, so as to provide better support effect.

[0113] The mounting surface of the rocker beam 400 and the sealing surface of the third sealing part 410 are located in the same plane, and the mounting surface of the battery pack 100, that is, 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 the installation process, only the flat cooperation of the mounting surface is needed to realize the flat cooperation of the sealing surfaces, so that the installation is more convenient, and the installation efficiency of the integrated battery pack 100 and the vehicle body in the CTB structure is improved.

[0114] In some embodiments, referring to FIG. 2, the avoiding section 510 on the sealing strip is located at the avoiding opening 411 and extends between the mounting surface and the top plane of the second connecting part, so as to seal the gap between the mounting surface and the top plane of the second connecting part.

[0115] ​Specifically, the number of the avoidance sections 510 is set according to the number of the seat cross beams 110, for example, in the embodiment, the number of the seat cross beams 110 is set to two. Therefore, two avoidance openings 411 are arranged on the third sealing part 410 of one side of the vehicle body structure, and the sealing strip is arranged with two avoidance sections 510 correspondingly.

[0116] Further, the avoidance section 510 is trapezoidal, and the two sides of the avoidance section 510 are arranged with inclined portions, which are used to connect with the straight sections. The inclined portions are used to be inserted into the first connecting part 430 and the second connecting part between the avoidance opening 411, so that at the avoidance opening 411, the mounting surface and the sealing surface of the battery pack 100 and the rocker beam 400 are both the connecting planes of the first connecting part 430 and the second connecting part. At the same time, after the bolt connection is staggered with the avoidance opening 411, the connection of the bolt will not hinder the installation of the sealing strip. And the first connecting part 430, the second connecting part and the sealing strip therebetween are pressed by the bolts on both sides of the avoidance opening 411, so as to achieve the sealing effect.

[0117] On the other hand, the application provides a vehicle comprising the vehicle body structure.

[0118] Among them, the vehicle body structure in the embodiment is the same as the structure of the vehicle body structure provided by any one of the above embodiments, and can bring the same or similar technical effects, which will not be repeated here, and the specific description can be referred to the description of the above embodiments.

[0119] The vehicle provided by the application is sealed by arranging the first sealing part 210 on the rear end structure 200 of the vehicle body, the second sealing part 310 on the front wall lower plate 300, and the third sealing part 410 on the two rocker beams 400, so as to divide the sealing of the vehicle body into four areas, and the first sealing part 210, the second sealing part 310 and the two third sealing parts 410 form a ring-shaped sealing structure, the sealing surfaces of the first sealing part 210, the second sealing part 310 and the third sealing part 410 are located on the same plane, and seal with the sealing piece 500 on the battery pack 100; so that the sealing surfaces of the whole vehicle body are located on the same plane, avoiding the situation that the sealing piece 500 switches between different sealing surfaces between different components, which is beneficial to improve the sealing effect of the whole vehicle, and at the same time, it is convenient to install the integrated battery pack 100 and the sealing piece 500, and improve the installation efficiency, so as to be suitable for the sealing of the vehicle body in the CTB structure.

[0120] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0121] It is to be understood that the application is not limited to the precise construction herein disclosed and shown in the drawings, and that various changes in shape, size and arrangements of parts can be made without departing from the scope of the application. The scope of the application is limited only by the claims that follow.

Claims

1. A vehicle body structure characterized by comprising: The application relates to a battery pack (100) configured to constitute a vehicle body floor of a vehicle body structure, a rear end structure (200) of the vehicle body, a front floor panel (300), two rocker beams (400), and a seal (500). The rear end structure (200) of the vehicle body is provided with a first sealing portion (210). The front floor panel (300) is provided with a second sealing portion (310). The two rocker beams (400) are provided with third sealing portions (410). The rear end structure (200) of the vehicle body and the front floor panel (300) are respectively connected to two ends of the two rocker beams (400), so that the first sealing portion (210), the second sealing portion (310) and the two third sealing portions (410) are connected to form an annular sealing structure, the sealing surfaces of the first sealing portion (210), the second sealing portion (310) and the third sealing portion (410) towards the battery pack (100) are located on the same plane, and the annular sealing structure is located above the battery pack (100). The 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. The mounting surface of the rear end structure (200) of the vehicle body towards the battery pack (100) is located on the same plane as the sealing surface of the first sealing portion (210) towards the battery pack (100).

2. The vehicle body structure according to claim 1, characterized by The mounting surface of the front floor panel (300) towards the upper cover of the battery pack (100) is located on the same plane as the sealing surface of the second sealing portion (310) towards the battery pack (100).

3. The vehicle body structure according to claim 1, characterized by The mounting surface of the rocker beam (400) towards the upper cover of the battery pack (100) is located on the same plane as the sealing surface of the third sealing portion (410) towards the battery pack (100).

4. The vehicle body structure according to claim 1, characterized by The mounting surface of the rear end structure (200) of the vehicle body towards the battery pack (100) is located on the same plane as the mounting surface of the rocker beam (400) towards the upper cover of the battery pack (100).

5. The vehicle body structure according to claim 2, characterized by The mounting surface of the rear end structure (200) of the vehicle body towards the battery pack (100), the mounting surface of the rocker beam (400) towards the upper cover of the battery pack (100) and the mounting surface of the front floor panel (300) towards the upper cover of the battery pack (100) are located on the same plane.

6. The vehicle body structure according to claim 2, characterized by The thickness of the first sealing portion (210) near the bottom of the seal (500) is greater than the thickness of the middle part of the first sealing portion (210), and the surface of the first sealing portion (210) near the seal (500) abuts against the seal (500).

7. The vehicle body structure according to any one of claims 1 to 6, characterized by ​ 8. The vehicle body structure according to claim 7, characterized by The first sealing part (210) comprises a first sealing rib (211) and two second sealing ribs (212), the two second sealing ribs (212) are respectively connected on the two sides of the first sealing rib (211), a mounting boss (220) is arranged on the rear end structure (200) of the vehicle body, the first sealing rib (211) is located below the mounting boss (220), and the first sealing rib (211) abuts against the sealing piece (500); the second sealing rib (212) is located outside the mounting boss (220), a turn-up portion (213) is arranged on the second sealing rib (212), and the turn-up portion (213) abuts against the sealing piece (500).

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

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

11. The vehicle body structure according to claim 10, characterized by The sealing section (311) is spaced apart from the face of the mounting section (313) close to the battery pack (100).

12. The vehicle body structure according to any one of claims 1 to 6, characterized by The rocker beam (400) comprises a rocker body (420) and a first connecting part (430), the first connecting part (430) is connected to the side of the rocker body (420) close to the battery pack (100), the first connecting part (430) is connected with the battery pack (100), and the third sealing part (410) is arranged on the first connecting part (430).

13. The vehicle body structure according to claim 12, characterized by The third sealing part (410) is arranged in plurality, and an avoiding opening (411) is formed between adjacent third sealing parts (410), a seat cross beam (110) is arranged on the battery pack (100), and the end of the seat cross beam (110) extends into the avoiding opening (411) so that the end of the seat cross beam (110) is close to the rocker body (420).

14. The vehicle body structure according to claim 13, characterized by An avoiding section (510) is arranged on the sealing piece (500), the avoiding section (510) is located at the avoiding opening (411) and partially extends between the first connecting part (430) and the battery pack (100) to seal the gap between the avoiding opening (411) of the rocker beam (400) and the battery pack (100).

15. A vehicle characterized by comprising: The vehicle body structure comprises the vehicle body structure according to any one of claims 1-14.

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