Vehicle body structure and vehicle

Abstract

The application discloses a vehicle body structure and a vehicle. The vehicle body structure comprises a vehicle body floor assembly, a battery module and a lower shell. The vehicle body floor assembly comprises a vehicle body floor and a function beam structure, and the vehicle body floor and the function beam structure are integrally formed. The lower shell is connected to the lower side of the vehicle body floor assembly and forms a containing space together with the vehicle body floor. The battery module is arranged in the containing space. The technical scheme can reduce the redundant design between the battery pack and the vehicle body.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a vehicle body structure and a vehicle. Background Technology

[0002] With the development of new energy vehicle technology, consumers have increasingly higher requirements for the driving range of electric vehicles. As a crucial factor affecting the driving range of electric vehicles, improving battery pack performance is a key focus for both automakers and battery manufacturers.

[0003] In related technologies, most power battery packs for new energy vehicles have a complete upper cover and lower housing, which together form a sealed housing structure to house the battery cells. This structure is then installed on the vehicle body as an independent component. This structure results in redundant design between the power battery pack and the vehicle body, limiting the potential for improving the lightweighting and volume utilization of the power battery pack. Summary of the Invention

[0004] The main objective of this invention is to propose a vehicle body structure that reduces redundant design between the battery pack and the vehicle body.

[0005] To achieve the above objectives, the present invention proposes a vehicle body structure comprising:

[0006] A vehicle floor assembly, comprising a vehicle floor and a functional beam structure, wherein the vehicle floor and the functional beam structure are integrally formed; and

[0007] The battery module and the lower housing are provided. The lower housing is connected to the lower side of the vehicle floor and forms an accommodating space with the vehicle floor. The battery module is disposed in the accommodating space.

[0008] Optionally, the functional beam structure includes a sill beam and a seat beam, with the vehicle floor and the sill beam integrally formed; and / or, the vehicle floor and the seat beam are integrally formed.

[0009] Optionally, the vehicle floor, the sill beam, and the seat beam are integrally die-cast.

[0010] Optionally, the battery module includes multiple battery cells and multiple mounting beams, the multiple mounting beams being spaced apart along a first direction, the battery cells being sandwiched between two adjacent mounting beams and connected to the mounting beams, the upper side of the mounting beams being connected to the vehicle floor assembly, and the lower side of the mounting beams being connected to the lower housing.

[0011] Optionally, the upper side of the mounting beam is provided with a first reinforcing rib, the first reinforcing rib abutting against the vehicle floor and extending along the extension direction of the mounting beam; and / or,

[0012] The mounting beam has a second reinforcing rib on its lower side. The second reinforcing rib abuts against the lower housing and extends along the extension direction of the mounting beam.

[0013] Optionally, the battery cell is bonded to the mounting beam; and / or,

[0014] The vehicle floor has a first mounting hole, a first fastener passes through the first mounting hole and is fastened to the upper side of the mounting beam, and a first sealing ring is provided between the mounting beam and the vehicle floor, the first sealing ring sealing the periphery of the first mounting hole; and / or,

[0015] The lower housing has a second mounting hole, and a second fastener passes through the second mounting hole and is fastened to the lower side of the mounting beam. A second sealing ring is provided between the mounting beam and the lower housing, and the second sealing ring seals the periphery of the second mounting hole.

[0016] Optionally, the battery unit further includes a plurality of cells arranged along a second direction, and a fixed end plate is connected between the ends of two adjacent mounting beams. The two fixed end plates are respectively disposed at opposite ends of the battery unit and press the plurality of cells together. The second direction is set at an angle to the first direction.

[0017] Optionally, cooling channels are provided inside the mounting beam.

[0018] Optionally, the lower housing has a mounting flange formed on its periphery, and the mounting flange is fastened to the vehicle floor by a third fastener; and / or,

[0019] A sealing element is provided between the lower housing and the vehicle floor to seal the accommodating space.

[0020] Optionally, the vehicle floor assembly includes a vehicle floor configured as a single piece; or the vehicle floor includes multiple interlocking sub-panels; and / or,

[0021] The lower housing is configured as a stamped sheet metal.

[0022] The present invention also proposes a vehicle comprising the body structure described above.

[0023] This invention's technical solution involves setting up a vehicle floor assembly with a lower housing connected to the lower side of the assembly, forming an enclosing space. The battery module is housed within this space. This eliminates the need for a separate upper housing for the battery pack, reducing design redundancy between the battery pack and the vehicle body. Furthermore, it eliminates the need for a connection structure between the upper housing and the vehicle floor assembly, reducing installation steps and the number of components, thus improving production efficiency and lowering costs. It also saves Z-axis space in the lower part of the vehicle structure, increasing the overall installation height of the battery pack and improving volume utilization. Since the vehicle floor assembly needs to bear the installation strength required as part of the vehicle body and as part of the battery pack, the integral molding of the vehicle floor with the functional beam structure not only improves the load-bearing strength of the vehicle floor assembly for seats, etc., but the functional beam also acts as a reinforcing beam, increasing the load-bearing strength of the vehicle floor assembly for the battery module. This further reduces design redundancy between the battery pack and the vehicle body, and eliminates the need to consider the installation relationship between the vehicle floor and the functional beam structure, thus reducing installation steps and the number of components, thereby improving production efficiency and lowering costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is an exploded view of an embodiment of the vehicle body structure of the present invention;

[0026] Figure 2 for Figure 1 A magnified view of a portion of the battery module;

[0027] Figure 3 for Figure 1 A partial enlarged view of the middle installation beam;

[0028] Figure 4 for Figure 1 Second enlarged view of the middle mounting beam;

[0029] Figure 5 for Figure 1 Enlarged view of a portion of the lower and middle shell.

[0030] Explanation of icon numbers:

[0031]

[0032]

[0033] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0037] This invention proposes a vehicle body structure 100.

[0038] In embodiments of the present invention, such as Figures 1 to 5 As shown, the vehicle body structure 100 includes:

[0039] The vehicle floor assembly 110, the vehicle floor 111, and the functional beam structure, wherein the vehicle floor 111 and the functional beam structure are integrally formed; and

[0040] The battery module 120 and the lower housing 130 are connected to the lower side of the vehicle floor assembly 110 and together with the vehicle floor 111 to form an accommodating space 131. The battery module 120 is disposed in the accommodating space 131.

[0041] Specifically, the lower housing 130 connects to the lower side of the vehicle floor assembly 110 and, together with the vehicle floor 111, forms an accommodating space 131 for the installation of the battery module 120. That is, the vehicle floor assembly 110 not only serves as part of the vehicle body, supporting the installation of body components such as seats, but also acts as the upper housing of the battery pack, supporting the installation of the battery module 120. Compared to a scheme where the battery module 120, the upper housing, and the lower housing 130 are first assembled into a battery pack, and then the entire battery pack is installed onto the vehicle floor assembly 110, this scheme eliminates the need for a separate upper housing design for the battery pack, thereby reducing design redundancy between the battery pack and the vehicle body. Furthermore, it eliminates the need for a connection between the upper housing and the vehicle floor assembly 110, reducing installation steps and the number of parts, thus improving production efficiency and reducing production costs. It also saves Z-axis space in the lower part of the vehicle structure 100, thereby increasing the overall installation height of the battery pack and improving volume utilization.

[0042] The vehicle floor assembly 110 needs to withstand the installation strength required as part of the vehicle body, and also as part of the battery pack. Therefore, the vehicle floor assembly 110 is integrally molded, meaning it is configured as a single structure before being connected to other structures. This improves the overall strength of the vehicle floor assembly 110, further enhancing its overall load-bearing capacity and thus increasing the overall strength of the vehicle. Furthermore, it eliminates the need to consider the connection relationships of the components forming the vehicle floor assembly 110, reducing installation steps and the number of parts, thereby improving production efficiency and reducing production costs.

[0043] The vehicle floor assembly 110 generally includes a vehicle floor 111 and a functional beam structure. A lower housing 130 connects to the vehicle floor 111. The vehicle floor assembly 110 is integrally formed, and the vehicle floor 111 is integrally formed with the functional beam structure. That is, when the upper housing serves as the vehicle floor 111, the upper housing is integrally formed with the functional beam structure. Because the vehicle floor 111 not only needs to bear the installation strength required as part of the vehicle body, but also needs to bear the weight of at least part of the battery module 120, when the vehicle floor 111 and the functional beam structure are formed separately, in order to ensure its load-bearing strength for the battery module 120, the upper housing often requires some reinforcing beams to strengthen the overall weight of the upper housing. In this solution, by integrally molding the vehicle floor 111 with the functional beam structure, not only is the load-bearing strength of the vehicle floor assembly 110 on seats and the like improved, but the functional beam can also serve as a reinforcing beam, thereby improving the load-bearing strength of the vehicle floor assembly 110 on the battery module 120. This further reduces the design redundancy between the battery pack and the vehicle body, and eliminates the need to consider the installation relationship between the vehicle floor 111 and the functional beam structure, thereby reducing the number of installation steps and parts, thus improving production efficiency and reducing production costs.

[0044] Furthermore, the functional beam structure includes a sill beam 112 and a seat beam 113, with the vehicle floor 111 integrally formed with the sill beam 112 and the seat beam 113. Preferably, the vehicle floor 111, sill beam 112, and seat beam 113 are integrally formed, thereby further improving the overall strength of the vehicle structure 100. In another embodiment, the vehicle floor 111 is integrally formed only with the sill beam 112. In yet another embodiment, the vehicle floor 111 is integrally formed only with the seat beam 113.

[0045] Furthermore, the vehicle floor 111, sill beam 112, and seat beam 113 are integrally die-cast. This further improves the overall strength of the vehicle body structure 100, thereby enhancing its ability to resist side pole impacts and bear battery cell loads. Of course, in other embodiments, the vehicle floor 111, sill beam 112, and seat beam 113 are integrally welded.

[0046] In this embodiment, the vehicle floor 111 is configured as a single plate, thereby improving the strength of the vehicle floor 111. In order to further improve the strength of the vehicle floor 111, multiple reinforcing ribs 135 can be provided on the vehicle floor 111.

[0047] In other embodiments, the vehicle floor 111 includes multiple interlocking sub-panels; that is, the vehicle floor 111 is formed by splicing multiple sub-panels. Preferably, the multiple sub-panels are welded together. In actual installation, the multiple sub-panels can be spliced ​​into a single plate, then integrally die-cast with the functional beam structure, and finally connected with the front compartment structure to form the vehicle body structure 100; alternatively, the multiple sub-panels can be integrally die-cast with the functional beam structure respectively, then welded together, and finally connected with the front compartment structure to form the vehicle body structure 100.

[0048] The technical solution of this invention involves setting up a vehicle floor assembly 110, with a lower housing 130 connected to the lower side of the vehicle floor assembly 110 and forming an accommodating space 131 with the vehicle floor 111. The battery module 120 is disposed in the accommodating space 131. This solution eliminates the need for a separate upper housing for the battery pack, thereby reducing design redundancy between the battery pack and the vehicle body. Furthermore, it eliminates the need for a connection between the upper housing and the vehicle floor assembly 110, reducing installation steps and the number of parts, thus improving production efficiency and reducing production costs. It also saves Z-axis space in the lower part of the vehicle body structure 100, thereby increasing the overall installation height of the battery pack and improving volume utilization. Because the vehicle floor assembly 110 needs to bear the installation strength required as part of the vehicle body, as well as the installation strength required as part of the battery pack, the vehicle floor 111 is integrally formed with the functional beam structure. This not only improves the load-bearing strength of the vehicle floor assembly 110 on seats, etc., but the functional beam can also serve as a reinforcing beam, thereby improving the load-bearing strength of the vehicle floor assembly 110 on the battery module 120. This further reduces the design redundancy between the battery pack and the vehicle body, and eliminates the need to consider the installation relationship between the vehicle floor 111 and the functional beam structure, thereby reducing the number of installation steps and parts, thus improving production efficiency and reducing production costs.

[0049] Refer to 1 and Figure 2In one embodiment, the battery module 120 includes multiple battery units 121 and multiple mounting beams 122. The mounting beams 122 are spaced apart along a first direction. The battery units 121 are sandwiched between two adjacent mounting beams 122 and connected to the mounting beams 122. The upper side of the mounting beams 122 is connected to the vehicle floor assembly 110, and the lower side of the mounting beams 122 is connected to the lower housing 130. Specifically, the first direction is preset to be the width direction of the vehicle body structure 100, so the first direction is approximately parallel to the extension direction of the seat beam 113. The corresponding second direction is the length direction of the vehicle body structure 100, so the first direction is approximately parallel to the extension direction of the sill beam 112. Of course, in other embodiments, the first direction can also be the length direction of the vehicle body structure 100, and the corresponding second direction is the width direction of the vehicle body structure 100. Multiple mounting beams 122 are arranged within the accommodating space 131, with the upper side of each beam connected to the vehicle floor assembly 110, i.e., the upper side of the mounting beams 122 is connected to the vehicle floor 111. This disperses the connection points between the battery module 120 and the vehicle floor 111, allowing the battery module 120 and the vehicle floor 111 to be connected through multiple connection points. This results in a more even distribution of force between the battery module 120 and the vehicle floor 111, a shorter force transmission path, and avoids stress concentration. The lower side of the mounting beams 122 is connected to the lower housing 130, further improving the installation stability of the battery module 120 and the installation stability between the lower housing 130 and the vehicle floor 111. The battery unit 121 is sandwiched between two adjacent mounting beams 122 and connected to them. That is, the battery unit 121 is connected to the vehicle floor 111 through the mounting beams 122, thus avoiding direct connection between the battery unit 121 and the vehicle floor 111 and reducing heat transfer.

[0050] Furthermore, a first reinforcing rib 122a is provided on the upper side of the mounting beam 122. The first reinforcing rib 122a abuts against the vehicle floor 111 and extends along the extension direction of the mounting beam 122. Specifically, the first reinforcing rib 122a abuts against the vehicle floor 111, which facilitates the installation of the mounting beam 122 and the vehicle floor 111, and also facilitates the sealing between the mounting beam 122 and the vehicle floor 111. Moreover, the first reinforcing rib 122a extends along the extension direction of the mounting beam 122, thereby improving the installation stability of the mounting beam 122.

[0051] In another embodiment, a second reinforcing rib 122b is provided on the lower side of the mounting beam 122. The second reinforcing rib 122b abuts against the lower housing 130 and extends along the extending direction of the mounting beam 122. Specifically, the second reinforcing rib 122b is used to abut against the lower housing 130, which facilitates the installation of the mounting beam 122 and the lower housing 130, and also facilitates the sealing between the mounting beam 122 and the lower housing 130. Furthermore, the second reinforcing rib 122b extends along the extending direction of the mounting beam 122, thereby improving the installation stability of the mounting beam 122. In this embodiment, the mounting beam 122 is configured in an "I" shape, with its upper side abutting against the vehicle floor 111 and its lower side abutting against the lower housing 130, thereby enhancing the Z-direction strength of the mounting beam 122 and enabling the mounting beam 122 to bear the weight of the battery unit 121.

[0052] Preferably, refer to Figure 3 The vehicle floor 111 has a first mounting hole, and a first fastener 123 passes through the first mounting hole and is fastened to the upper side of the mounting beam 122. A first sealing ring 127 is provided between the mounting beam 122 and the vehicle floor 111, sealing the periphery of the first mounting hole. Specifically, multiple first mounting holes are provided on the vehicle floor 111, and multiple threaded holes are correspondingly spaced on the upper side of the mounting beam 122. The first fastener 123 passes through the first mounting hole and is fastened to the threaded hole, thereby fixing the mounting beam 122 to the overall vehicle floor 111 and further making the stress distribution between the mounting beam 122 and the vehicle floor 111 more even, further reducing stress concentration. The connection through the first fastener 123 also facilitates the disassembly of the battery module 120, making it convenient for later maintenance. The first fastener 123 can be configured as a fastening screw or a fastening bolt. In other embodiments, the upper side of the mounting beam 122 can also be bonded to the vehicle floor assembly 110. To ensure the airtightness of the accommodating space and reduce the possibility of moisture entering the accommodating space through the first mounting hole, a first sealing ring 127 is provided between the mounting beam 122 and the vehicle floor 111. The first sealing ring 127 seals the periphery of the first mounting hole, thereby ensuring the airtightness of the accommodating space. A sealing groove is provided on the upper side of the mounting beam, and the first sealing ring 127 is installed in the sealing groove. The first sealing ring 127 can be sealing foam or a rubber ring, etc.

[0053] In another embodiment, reference Figure 4The lower housing 130 has a second mounting hole, through which a second fastener 124 passes and is fastened to the lower side of the mounting beam 122. A second sealing ring is provided between the mounting beam 122 and the lower housing 130, sealing the periphery of the second mounting hole. Specifically, multiple second mounting holes are provided on the lower housing 130, and multiple threaded holes are correspondingly spaced on the lower side of the mounting beam 122. The second fastener 124 passes through the second mounting holes and is fastened to the threaded holes, thereby fixing the mounting beam 122 to the vehicle floor assembly 110 and further distributing the force between the mounting beam 122 and the lower housing 130 more evenly, further reducing stress concentration. The connection via the second fastener 124 also facilitates the disassembly of the battery module 120, making future maintenance easier. The second fastener 124 can be configured as a fastening screw or a fastening bolt. In other embodiments, the lower side of the mounting beam 122 can also be bonded to the lower housing 130. To ensure the airtightness of the accommodating space and reduce the possibility of moisture entering the accommodating space through the second mounting hole, a second sealing ring is provided between the mounting beam 122 and the lower housing 130. The second sealing ring seals the periphery of the second mounting hole, thereby ensuring the airtightness of the accommodating space. A sealing groove is provided on the lower side of the mounting beam, and the second sealing ring is installed in the sealing groove. This second sealing ring can be sealing foam or a rubber ring, etc.

[0054] In another embodiment, the battery unit 121 is bonded to the mounting beam 122. Specifically, the opposite sides of the battery unit 121 are bonded to the mounting beams 122 located on both sides to fix the battery unit 121 to form a battery module 120.

[0055] Furthermore, a cooling channel 122c is provided within the mounting beam 122 to facilitate the removal of heat generated by each battery cell 121. The battery cells 121 are bonded to the mounting beam 122, which helps transfer heat from the battery cells 121 to the mounting beam 122, thereby contributing to the overall heat dissipation of the battery module 120. The extension path of the cooling channel 122c can be in the shape of "I", "U", "S", or "W". The mounting beam 122 is hollow and located between two battery cells 121, which helps resist the expansion force of the battery cell 126. In this embodiment, the mounting beam 122 is made of hollow aluminum alloy profile. The mounting beam 122 not only serves to mount the battery cell 126 but also improves the heat dissipation of the battery cell 126 and helps resist the expansion force of the battery cell 126, thereby saving installation space in the battery module 120, improving the volume utilization rate of the battery module 120, and contributing to the lightweight design of the battery module 120.

[0056] Refer again Figure 1 and Figure 2In one embodiment, the battery unit 121 further includes a plurality of battery cells 126 arranged along a second direction. A fixed end plate 125 is connected between the ends of two adjacent mounting beams 122. The two fixed end plates 125 are respectively disposed at opposite ends of the battery unit 121 and press the plurality of battery cells 126 together. The second direction is set at an angle to the first direction. Specifically, the plurality of battery cells 126 are arranged along the second direction, and fixed end plates 125 are provided at opposite ends of the battery unit 121. The two fixed end plates 125 press the plurality of battery cells 126 together, which can not only further fix the battery cells 126, but also help resist the expansion force of the battery cells 126 along the second direction. The fixed end plates 125 are connected to the ends of the two adjacent mounting beams 122, so that the fixed end plates 125 and the mounting beams 122 together form a frame structure, which further improves the installation stability of the battery cells 126 and also helps to further resist the expansion force of the battery cells 126. In this embodiment, the battery cell 126 is configured as a square-shell battery cell 126. In other embodiments, the battery cell 126 may also be a cylindrical battery cell 126 or a blade battery cell 126.

[0057] Optionally, a mounting flange 132 is formed on the periphery of the lower housing 130, and the mounting flange 132 is fastened to the vehicle floor 111 by a third fastener 133. Specifically, the periphery of the lower housing 130 is fastened to the vehicle floor 111 by the third fastener 133, thereby facilitating the disassembly of the lower housing 130 and the maintenance of the battery module 120. To increase the contact area between the lower housing 130 and the vehicle floor 111 and improve the connection stability, the mounting flange 132 is formed on the periphery of the lower housing 130. The mounting flange 132 abuts against the vehicle floor 111, thereby fastening the mounting flange 132 to the vehicle floor 111 by the third fastener 133, which also helps to seal between the lower housing 130 and the vehicle floor 111.

[0058] Furthermore, refer to Figure 4 A sealing element 134 is provided between the lower housing 130 and the vehicle floor 111 to seal the accommodating space 131. Specifically, the sealing element 134 is located inside the mounting flange 132 and is circumferentially disposed around the periphery of the lower housing 130, thereby sealing the accommodating space 131 to protect the battery module 120. To further improve the sealing performance, the connections between the mounting beam 122 and the vehicle floor 111, as well as between the mounting beam 122 and the lower housing 130, are all sealed.

[0059] To further protect the battery module 120, in one embodiment, the lower housing 130 is configured as a stamped sheet metal. The lower housing 130 is generally made of high-strength stamped sheet metal to ensure the structural strength of the lower housing 130 and improve the bottom impact protection function. In addition, to further improve the strength of the lower housing 130, multiple reinforcing ribs 135 are usually provided on the lower housing 130.

[0060] The present invention also proposes a vehicle, which includes a body structure 100. The specific structure of the body structure 100 is as described in the above embodiments. Since the vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0061] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A vehicle body structure, characterized in that, include: The vehicle floor assembly includes a vehicle floor and a functional beam structure, wherein the vehicle floor and the functional beam structure are integrally formed. as well as The battery module and the lower housing are provided. The lower housing is connected to the lower side of the vehicle floor and forms an accommodating space with the vehicle floor. The battery module is disposed in the accommodating space. The battery module includes multiple battery units and multiple mounting beams. The mounting beams are spaced apart along a first direction. The battery units are sandwiched between two adjacent mounting beams and connected to the mounting beams. The upper side of the mounting beams is connected to the vehicle floor. The battery units are bonded to the mounting beams. The lower side of the mounting beams is provided with a second reinforcing rib. The second reinforcing rib is located between the battery units and the lower housing and extends along the extension direction of the mounting beams.

2. The vehicle body structure as described in claim 1, characterized in that, The functional beam structure includes a sill beam and a seat beam, with the vehicle floor and the sill beam being integrally formed; and / or, the vehicle floor and the seat beam being integrally formed.

3. The vehicle body structure as described in claim 2, characterized in that, The vehicle floor, the door sill beam, and the seat beam are integrally die-cast.

4. The vehicle body structure as described in claim 1, characterized in that, The lower side of the mounting beam is connected to the lower housing.

5. The vehicle body structure as described in claim 4, characterized in that, The upper side of the mounting beam is provided with a first reinforcing rib, which abuts against the vehicle floor and extends along the extension direction of the mounting beam; and / or, The second reinforcing rib abuts against the lower housing.

6. The vehicle body structure as described in claim 4, characterized in that, The vehicle floor has a first mounting hole, a first fastener passes through the first mounting hole and is fastened to the upper side of the mounting beam, and a first sealing ring is provided between the mounting beam and the vehicle floor, the first sealing ring sealing the periphery of the first mounting hole; and / or, The lower housing has a second mounting hole, and a second fastener passes through the second mounting hole and is fastened to the lower side of the mounting beam. A second sealing ring is provided between the mounting beam and the lower housing, and the second sealing ring seals the periphery of the second mounting hole.

7. The vehicle body structure as described in claim 4, characterized in that, The battery unit also includes multiple cells arranged along the second direction. A fixed end plate is connected between the ends of two adjacent mounting beams. The two fixed end plates are respectively located at opposite ends of the battery unit and press the multiple cells together. The second direction is set at an angle to the first direction.

8. The vehicle body structure as described in claim 4, characterized in that, Cooling channels are provided inside the mounting beam.

9. The vehicle body structure as described in claim 2, characterized in that, The lower housing has a mounting flange formed around its periphery, and the mounting flange is fastened to the vehicle floor by a third fastener; and / or, A sealing element is provided between the lower housing and the vehicle floor to seal the accommodating space.

10. The vehicle body structure as described in any one of claims 1 to 9, characterized in that, The vehicle floor assembly includes a vehicle floor, which is configured as a single piece; or the vehicle floor includes multiple interlocking sub-panels; and / or, The lower housing is configured as a stamped sheet metal.

11. A vehicle, characterized in that, Includes the vehicle body structure as described in any one of claims 1 to 10.

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