Battery and automobile body integrated structure and automobile

Abstract

The utility model provides a battery and automobile body integrated structure and an automobile, and relates to the technical field of automobile parts. The battery and vehicle body integrated structure comprises a battery pack, a cross beam assembly and two doorsill beams, the battery pack is connected between the two doorsill beams, the cross beam assembly is arranged on an upper cover of the battery pack, the cross beam assembly is located between the two doorsill beams, the cross beam assembly comprises a cross beam body and a reinforcing structure, and the reinforcing structure is located in an inner cavity of the cross beam body. The cross beam assembly at least comprises the cross beam body and the reinforcing structure, the cross beam body is of a non-solid structure and is of a hollow structure with an inner cavity inside, then lightweight design of an automobile is facilitated, meanwhile, the reinforcing structure is connected into the inner cavity of the cross beam body, and the reinforcing structure is more convenient to use while lightweight design is achieved. And the transverse rigidity and strength of the cross beam body, the battery pack and even the whole battery and vehicle body integrated structure can be further improved through the reinforcing structure, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, and more specifically, to an integrated battery-body structure and an automobile. Background Art

[0002] New energy vehicles are a major direction of automotive development and a key factor in achieving carbon emission reduction goals. Power batteries are the main power source of new energy vehicles. Due to the increasing demand for driving range from consumers, the energy density of power batteries has always been the focus of research and development. However, currently, the most commonly used power batteries such as lithium iron phosphate batteries and ternary lithium batteries have reached the bottleneck of performance limits in the existing battery technologies, and it is difficult to further develop in terms of volume energy density and mass energy density in a short time.

[0003] The integrated battery-body technology combines the battery pack upper cover with at least part of the vehicle body floor between the left and right sill beams. This integration saves the vertical space between the traditional vehicle body floor and the battery pack, effectively improves the volume utilization rate and energy density of the battery system, improves the Z-direction occupant space, and also reduces the weight of the vehicle, which has become a new development direction in the new energy vehicle industry.

[0004] However, since the battery pack upper cover replaces part of the floor of the traditional vehicle body floor assembly, the lateral stiffness of the vehicle body floor assembly becomes lower. When the vehicle is side-collided, the vehicle body floor assembly and the battery pack are easily squeezed and deformed due to insufficient lateral stiffness, not only compressing the space of the occupant compartment, but also the battery pack is prone to catch fire due to being squeezed. Summary of the Utility Model

[0005] The utility model aims to improve the safety of the integrated battery-body structure.

[0006] To solve the above problems, the utility model provides an integrated battery-body structure, including a battery pack, a crossbeam assembly, and two sill beams. The battery pack is connected between the two sill beams. The crossbeam assembly is disposed at the upper cover of the battery pack and is located between the two sill beams. The crossbeam assembly includes a crossbeam body and a strengthening structure. The crossbeam body is provided with an inner cavity, and the strengthening structure is located in the inner cavity of the crossbeam body.

[0007] Similar to the prior art, the battery pack can also be installed between the left and right sill beams, and the upper cover of the battery pack is used to replace at least part of the floor of the traditional vehicle body structure, such as the middle floor of the traditional vehicle body structure, to achieve the integrated design of the battery and the vehicle body. On this basis, different from the prior art, a crossbeam assembly is further provided at the top of the upper cover of the battery pack between the left and right sill beams, so as to strengthen the transverse rigidity and strength of the battery pack and even the entire integrated structure of the battery and the vehicle body through the crossbeam assembly, and improve the safety of the integrated structure of the battery and the vehicle body. The crossbeam assembly at least includes a crossbeam body and a strengthening structure. The crossbeam body is not a solid structure, but a hollow structure with an inner cavity inside, which is conducive to the lightweight design of the vehicle. At the same time, a strengthening structure is connected in the inner cavity of the crossbeam body. While achieving the lightweight design, the transverse rigidity and strength of the crossbeam body, the battery pack and even the entire integrated structure of the battery and the vehicle body can be further increased through the strengthening structure, and the safety of the integrated structure of the battery and the vehicle body is higher.

[0008] Further, in a cross-section perpendicular to the extending direction of the crossbeam body, the cross-sectional shape of the strengthening structure is the same as that of the crossbeam body, and the strengthening structure is spaced apart from the crossbeam body.

[0009] Further, the end face of one transverse end of the strengthening structure is flush with the end face of one transverse end of the crossbeam body;

[0010] Or / and, the strengthening structures are respectively arranged at the two transverse ends of the inner cavity.

[0011] Further, the crossbeam body includes an integrally formed crossbeam top plate, crossbeam side plates and a crossbeam bottom plate. The crossbeam top plate is spaced apart from the upper cover. The two longitudinal ends of the crossbeam top plate are respectively connected with the crossbeam side plates. An inner cavity is formed by enclosing between the crossbeam top plate and the two connected crossbeam side plates. One end of the crossbeam side plate far away from the crossbeam top plate is connected with the crossbeam bottom plate, and the crossbeam bottom plate is located on the side of the crossbeam side plate far away from the inner cavity; wherein, the crossbeam bottom plate is attached to and connected with the upper cover.

[0012] Further, the crossbeam body includes at least one crossbeam. When the crossbeam body includes a plurality of crossbeam top plates, the plurality of crossbeam top plates are arranged at intervals longitudinally. The two longitudinal ends of each crossbeam top plate are respectively connected with the crossbeam side plates. The two crossbeam side plates between two adjacent crossbeam top plates are connected by one crossbeam bottom plate.

[0013] Further, the integrated structure of the battery and the vehicle body further includes a sealing plate member. The transverse end of the crossbeam body is spaced apart from the corresponding sill beam. The sealing plate member is located between the crossbeam body and the sill beam, and the sealing plate member is connected with the crossbeam body.

[0014] Further, the battery-body integrated structure further includes other cross beams, the other cross beams are disposed at the upper cover, and the other cross beams are located between the two sill beams, and the other cross beams and the cross beam assembly are arranged at intervals along the length direction of the sill beam;

[0015] And / or, a plurality of the cross beam assemblies are arranged at intervals along the length direction of the sill beam at the upper cover.

[0016] Further, each of the sill beams includes a first longitudinal beam and a second longitudinal beam which are integrally formed; the second longitudinal beam is located below one end of the first longitudinal beam away from the cross beam assembly and is connected to the first longitudinal beam, and a side frame is convexly provided on a side surface of the battery pack facing the corresponding sill beam, and the side frame is located below the first longitudinal beam and is connected to the first longitudinal beam.

[0017] Further, the battery-body integrated structure further includes a support structure, a cutout is provided on the side frame, the support structure is connected to the first longitudinal beam, a longitudinal position of the support structure on the first longitudinal beam corresponds to a longitudinal position of the cutout on the side frame, and the support structure is located between an end of the first longitudinal beam and the cross beam assembly.

[0018] The present utility model further provides an automobile, including the battery-body integrated structure as described above.

[0019] Since the technical improvement and technical effects of the automobile are the same as those of the battery-body integrated structure, the automobile will not be described in detail herein. Description of the Drawings

[0020] Figure 1 is a schematic structural view of the battery-body integrated structure of the embodiment of the present utility model at the battery pack;

[0021] Figure 2 is Figure 1 the front view of

[0022] Figure 3 is Figure 1 the schematic structural view after removing two sill beams in

[0023] Figure 4 is an exploded schematic view of a cross beam assembly and a sealing plate member of the embodiment of the present utility model;

[0024] Figure 5 is an assembled structural view of a cross beam assembly and a sealing plate member of the embodiment of the present utility model;

[0025] Figure 6Another exploded view of the crossbeam assembly and the sealing plate member according to an embodiment of the present invention;

[0026] Figure 7 Another schematic assembly structure diagram of the crossbeam assembly and the sealing plate member according to an embodiment of the present invention.

[0027] Explanation of reference numerals:

[0028] 1. Battery pack; 11. Upper cover; 12. Side frame; 121. Cutting opening; 2. Crossbeam assembly; 21. Crossbeam body; 211. Crossbeam top plate; 212. Crossbeam side plate; 213. Crossbeam bottom plate; 22. Reinforcing structure; 23. Inner cavity; 3. Other crossbeams; 4. Threshold beam; 41. First longitudinal beam; 42. Second longitudinal beam; 5. Support structure; 6. Sealing plate member; 61. Flange. Detailed implementation manners

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. Moreover, in the accompanying drawings, the X-axis represents the longitudinal direction, and the positive direction of the X-axis represents the front, and the negative direction of the X-axis represents the rear; the Y-axis represents the transverse direction, and the positive direction of the Y-axis represents the left, and the negative direction of the Y-axis represents the right; the Z-axis represents the vertical direction, that is, the up and down direction, and the positive direction of the Z-axis represents the upper, and the negative direction of the Z-axis represents the lower.

[0031] At the same time, it should be noted that the meanings represented by the foregoing X-axis, Y-axis, and Z-axis are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0032] In the present invention, unless otherwise specifically stated, "a plurality of" means at least two.

[0033] See Figure 1 、 Figure 4 and Figure 6, the present utility model provides an integrated battery-body structure, including a battery pack 1, a crossbeam assembly 2 and two sill beams 4. The battery pack 1 is connected between the two sill beams 4. The crossbeam assembly 2 is disposed at the upper cover 11 of the battery pack 1, and the crossbeam assembly 2 is located between the two sill beams 4. The crossbeam assembly 2 includes a crossbeam body 21 and a reinforcement structure 22. The crossbeam body 21 is provided with an inner cavity 23, and the reinforcement structure 22 is located in the inner cavity 23 of the crossbeam body 21.

[0034] In this embodiment, similar to the prior art, the battery pack 1 can also be installed between the left and right sill beams 4, and the upper cover 11 of the battery pack 1 is used to replace at least part of the floor of the traditional vehicle body structure, such as the middle floor of the traditional vehicle body structure, so as to achieve the integrated design of the battery and the vehicle body. This can save the vertical space between the traditional vehicle body floor and the battery pack 1, effectively improve the volume utilization rate and energy density of the battery pack 1, and improve the Z-direction occupant space, and also reduce the weight of the vehicle.

[0035] On this basis, different from the prior art, a crossbeam assembly 2 is further provided at the top of the upper cover 11 of the battery pack 1 between the left and right sill beams 4, so as to strengthen the lateral rigidity and strength of the battery pack 1 and even the entire integrated battery-body structure through the crossbeam assembly 2, and improve the safety of the integrated battery-body structure. Among them, the crossbeam assembly 2 at least includes a crossbeam body 21 and a reinforcement structure 22. The crossbeam body 21 is not a solid structure, but a hollow structure with an inner cavity 23 inside, which is beneficial to the lightweight design of the vehicle. At the same time, a reinforcement structure 22 is provided in the inner cavity 23 of the crossbeam body 21. While realizing the lightweight design, the lateral rigidity and strength of the crossbeam body 21, the battery pack 1 and even the entire integrated battery-body structure can be further increased through the reinforcement structure 22, and the safety of the integrated battery-body structure is higher.

[0036] It should be noted that before the battery pack 1 is installed between the left and right sill beams 4, the crossbeam assembly 2 is fixed to the upper cover 11 of the battery pack 1 in advance, that is, the crossbeam assembly 2 is a fixed structure on the battery pack 1. After the crossbeam assembly 2 is installed and fixed to the upper cover 11 of the battery pack 1, the crossbeam assembly 2 is installed between the left and right sill beams 4 together with the battery pack 1. Through modular design, the assembly of the entire integrated battery-body structure is more convenient and efficient. Among them, the vehicle body structure with the left and right sill beams 4 is the first module, and the crossbeam assembly 2 and the battery pack 1 as a whole are the second module. It can be understood that in the first module, at least part of the floor of the traditional vehicle body structure, such as the middle floor, is cancelled, and then the upper cover 11 of the battery pack 1 in the second module is used to replace the middle floor.

[0037] See Figure 4 and Figure 6, optionally, in a cross-section perpendicular to the extending direction of the crossbeam body 21, the cross-sectional shape of the reinforcing structure 22 (the shape of the XZ cross-section) is the same as that of the crossbeam body 21, and the reinforcing structure 22 is arranged at an interval from the crossbeam body 21.

[0038] In this embodiment, the reinforcing structure 22 includes a reinforcing structure 22 having the same cross-sectional shape as that of the crossbeam body 21, and this reinforcing structure 22 is arranged at an interval from the inner wall of the crossbeam body 21 instead of being attached together. Then, the reinforcing structure 22 arranged at an interval from the crossbeam body 21 can also be fixed to the upper cover 11. Specifically, the same cross-sectional shape means that the shape contours are substantially the same. For example, as Figure 4 shown, the cross-sectional shapes of both the crossbeam body 21 and the reinforcing structure 22 are in a "ji" shape. In this way, compared with the single crossbeam body 21, the transverse rigidity and strength of the crossbeam assembly 2 can be increased through the reinforcing structure 22; and the reinforcing structure 22 is arranged at an interval from the crossbeam body 21, ensuring that when the crossbeam assembly 2 is subjected to a transverse load due to a side collision of the vehicle, during the transmission of the transverse load along the crossbeam assembly 2, the transverse load will not be concentrated together, but will be distributed on the spaced-apart crossbeam body 21 and the reinforcing structure 22, thereby further enhancing the force-bearing capacity of the crossbeam assembly 2.

[0039] See Figure 4 and Figure 6 , optionally, the end face of the transverse end of the reinforcing structure 22 is flush with the end face of the transverse end of the crossbeam body 21;

[0040] Or / and, the reinforcing structure 22 is respectively arranged at the two transverse ends of the inner cavity 23.

[0041] In this embodiment, when a side collision of the vehicle occurs, the collision load is first transmitted through the sill beam 4 and then to the end of the crossbeam assembly 2. Therefore, the rigidity and strength of the end of the crossbeam assembly 2 are crucial. Considering this aspect, the end face of the transverse end of the reinforcing structure 22 is flush with the end face of the crossbeam body 21 to enhance the rigidity and strength of the entire end of the crossbeam assembly 2.

[0042] In this embodiment, the reinforcing structure 22 is respectively arranged at the two transverse ends of the inner cavity 23 to ensure that whether a side collision occurs on the left side or the right side of the vehicle, both the left and right ends of the crossbeam assembly 2 have relatively high rigidity and strength. The reinforcing structure 22 may not be arranged in the inner cavity 23 between the left and right reinforcing structures 22, thereby further reducing the overall weight.

[0043] In other embodiments, when the need for lightweight design of the crossbeam assembly 2 is not particularly high, only one reinforcing structure 22 may be provided in the inner cavity 23. However, the left end face of this one reinforcing structure 22 extends to be flush with the left end face of the crossbeam body 21, and the right end face of the reinforcing structure 22 extends to be flush with the right end face of the crossbeam body 21.

[0044] See Figure 4 and Figure 6 , optionally, the crossbeam body 21 includes an integrally formed crossbeam top plate 211, crossbeam side plates 212, and crossbeam bottom plate 213. The crossbeam top plate 211 is spaced apart from the upper cover 11. The two longitudinal ends of the crossbeam top plate 211 are respectively connected to the crossbeam side plates 212. An inner cavity 23 is formed by enclosing between the crossbeam top plate 211 and the two crossbeam side plates 212 connected thereto. One end of the crossbeam side plate 212 away from the crossbeam top plate 211 is connected to the crossbeam bottom plate 213, and the crossbeam bottom plate 213 is located on the side of the crossbeam side plate 212 away from the inner cavity 23; wherein, the crossbeam bottom plate 213 is attached to and connected to the upper cover 11.

[0045] In this embodiment, the inner cavity 23 is formed by enclosing the crossbeam top plate 211 and the crossbeam side plates 212 on its front and rear sides. Finally, the crossbeam bottom plate 213 is attached to and connected to the upper cover 11 to ensure a certain connection area with the upper cover 11 and good fixing effect; the crossbeam top plate 211 and the crossbeam side plates 212 on its front and rear sides form a C-shaped cross-section to achieve a certain rigidity and strength of the crossbeam body 21 itself. Among them, the crossbeam bottom plate 213 is located at the bottom end of the crossbeam side plate 212 on the side away from the inner cavity 23, that is, the crossbeam bottom plate 213 is located outside the inner cavity 23. On the one hand, it is convenient to connect and fix the crossbeam bottom plate 213 and the upper cover 11 from the outside; on the other hand, it is convenient for the processing and forming of the crossbeam body 21. For example, a flat plate can be stamped to form a recess in the middle, and the recess includes the aforementioned crossbeam top plate 211 and the crossbeam side plates 212 on its front and rear sides, and the part that does not form the recess is the crossbeam bottom plate 213.

[0046] See Figure 1 、 Figures 3 - 7 , optionally, the crossbeam body 21 includes one crossbeam top plate 211 or multiple crossbeam top plates 211; when the crossbeam body 21 includes multiple crossbeam top plates 211, the multiple crossbeam top plates 211 are spaced apart longitudinally. The two longitudinal ends of each crossbeam top plate 211 are respectively connected to the crossbeam side plates 212, and the two crossbeam side plates 212 between two adjacent crossbeam top plates 211 are connected by one crossbeam bottom plate 213.

[0047] In this embodiment, the first crossbeam body 21 may have only one inner cavity 23. In this case, as Figures 4 - 5 shown, the crossbeam body 21 only includes one crossbeam top plate 211, two crossbeam side plates 212, and two crossbeam bottom plates 213. The front and rear ends of this one crossbeam top plate 211 are respectively connected to the two crossbeam side plates 212 in one-to-one correspondence, and the two crossbeam bottom plates 213 are respectively connected to the two crossbeam side plates 212 in one-to-one correspondence.

[0048] In this embodiment, the second crossbeam body 21 may have a plurality of inner cavities 23 arranged at intervals in the front-rear direction. In this case, as Figures 6 - 7 shown, the crossbeam body 21 includes two crossbeam top plates 211, four crossbeam side plates 212, and three crossbeam bottom plates 213. The front and rear ends of each crossbeam top plate 211 are respectively connected to the two crossbeam side plates 212 in one-to-one correspondence, and the two middle crossbeam side plates 212 are connected as a whole through the middle crossbeam bottom plate 213. Of course, the crossbeam body 21 may also include three, four, or even more crossbeam top plates 211 to enclose three, four, or even more inner cavities 23. Specifically, the multiple inner cavities 23 of the crossbeam body 21 can be regarded as being formed by sequentially splicing a plurality of crossbeams with a "Ji"-shaped cross-section. At this time, the cross-section of the reinforcing structure 22 in each inner cavity 23 can also be in the shape of a "Ji".

[0049] In this embodiment, according to the force conditions of the vehicle during a side collision in practice, the above-mentioned first crossbeam body 21 or the second crossbeam body 21 with higher strength can be selected for use.

[0050] Referring to Figure 1 、 Figures 3 - 7 , optionally, the battery-body integrated structure further includes a sealing plate member 6. The transverse end of the crossbeam body 21 is spaced from the corresponding sill beam 4, the sealing plate member 6 is located between the crossbeam body 21 and the sill beam 4, and the sealing plate member 6 is connected to the crossbeam body 21.

[0051] In this embodiment, as described above, the vehicle body structure with the left and right sill beams 4 is the first module, and the crossbeam assembly 2 and the battery pack 1 as a whole are the second module. To ensure the feasibility and convenience of assembly, the length dimension of the crossbeam body 21 (that is, the dimension in the vehicle width direction) should be smaller than the dimension between the left and right two sill beams 4. In this way, the second module can be conveniently installed between the two sill beams 4 of the first module.

[0052] After the second module can be conveniently installed between the two sill beams 4 of the first module, since the length dimension of the crossbeam body 21 is smaller than the dimension between the left and right sill beams 4, that is to say, there is a lateral gap between the end face of the crossbeam body 21 and the corresponding side sill beam 4. At this time, the sealing plate member 6 can be placed between the end face of the crossbeam body 21 and the corresponding side sill beam 4 to reduce the lateral gap between the end face of the crossbeam body 21 and the corresponding side sill beam 4, so as to ensure the effectiveness of force transmission between the sill beam 4 and the crossbeam assembly 2.

[0053] In addition, the sealing plate member 6 is fixedly connected to the crossbeam body 21, which is equivalent to closing the inner cavity 23 from the end of the crossbeam body 21, and is equivalent to increasing the area of the end face of the crossbeam body 21. Thus, when a side collision occurs to the vehicle, the collision load received by the sill beam 4 is transmitted to the crossbeam assembly 2 through the sealing plate member 6, which can make the force at the end of the crossbeam body 21 more uniform and improve the ability of the crossbeam assembly 2 to bear the lateral load.

[0054] Optionally, after the sealing plate member 6 is fixedly connected to the crossbeam body 21, there may be a very small gap between the sealing plate member 6 and the corresponding side sill beam 4. The existence of this gap, on the one hand, facilitates the installation of the sealing plate member 6; on the other hand, when the battery pack 1 needs to be disassembled, the crossbeam assembly 2 and the sealing plate can be relatively conveniently disassembled integrally with the battery pack 1 from between the two sill beams 4.

[0055] See Figure 1 and Figure 3 , optionally, the battery-body integrated structure further includes other crossbeams 3, the other crossbeams 3 are arranged at the upper cover 11, and the other crossbeams 3 are located between the two sill beams 4, and the other crossbeams 3 and the crossbeam assembly 2 are arranged at intervals along the length direction of the sill beam 4;

[0056] And / or, a plurality of the crossbeam assemblies 2 are arranged at intervals along the length direction of the sill beam 4 at the upper cover 11.

[0057] In this embodiment, a plurality of crossbeam assemblies 2 are arranged at intervals along the length direction of the sill beam 4 (the longitudinal direction of the vehicle, which is also the front-rear direction represented by the X-axis) at the upper cover 11. Thus, it can effectively protect the battery pack 1 from being squeezed at each position from front to back during a side collision, so as to achieve the protection effect on the entire side.

[0058] In this embodiment, in addition to the crossbeam assembly 2 provided on the top of the upper cover 11, other crossbeams 3 spaced apart from the crossbeam assembly 2 may be provided. For example, the other crossbeams 3 are provided at the tail position of the upper cover 11, which corresponds to the management system in the battery pack 1 rather than the battery cells. The requirement for the lateral rigidity at this position can be appropriately reduced. Based on this, the other crossbeams 3 can be designed to have a lower rigidity than the crossbeam assembly 2 to save costs. For example, the other crossbeams 3 may be crossbeam bodies 21 without internal reinforcing structures 22.

[0059] See Figures 1 - 3 Optionally, each of the sill beams 4 includes an integrally formed first longitudinal beam 41 and a second longitudinal beam 42; the second longitudinal beam 42 is located below one end of the first longitudinal beam 41 away from the crossbeam assembly 2 and is connected to the first longitudinal beam 41. A side frame 12 is protrudingly provided on the side of the battery pack 1 facing the corresponding sill beam 4. The side frame 12 is located below the first longitudinal beam 41 and is connected to the first longitudinal beam 41.

[0060] In this embodiment, the cross-sectional shape (the shape of the YZ cross-section) of the sill beam 4 composed of the first longitudinal beam 41 and the second longitudinal beam 42 is L-shaped, which can ensure that the sill beam 4 itself has high rigidity. Specifically, one end in the width direction of the two first longitudinal beams 41 is respectively connected to the top end of the second longitudinal beam 42 on the corresponding side, and the other end in the width direction of the two first longitudinal beams 41 extends toward the closer side; thus, before installing the aforementioned second module between the two sill beams 4 of the first module, the first module with the two sill beams 4 can be first lifted to a set height, and then the second module including the battery pack 1 and the crossbeam assembly 2 (or the second module including the battery pack 1, the crossbeam assembly 2 and the other crossbeams 3) is moved upward as a whole until the side frames 12 on the left and right sides of the battery pack 1 respectively abut against the bottom sides of the corresponding first longitudinal beams 41, and then the side frames 12 are connected and fixed to the first longitudinal beams 41, which is convenient for assembly; moreover, the battery pack 1 is located between the two second longitudinal beams 42 on the left and right, and the second longitudinal beams 42 can cover at least part of the battery pack 1 from the side of the battery pack 1 to play a role in protecting the battery pack 1.

[0061] Among them, the side frame 12 and the first longitudinal beam 41 can be fixedly connected by bolts to facilitate the removal of the battery pack 1 during later maintenance.

[0062] See Figures 1 - 3, optionally, the battery-integrated body structure further includes a support structure 5. A cutout 121 is provided on the side frame 12. The support structure 5 is connected to the first longitudinal beam 41. The longitudinal position of the support structure 5 on the first longitudinal beam 41 corresponds to the longitudinal position of the cutout 121 on the side frame 12, and the support structure 5 is located between the first longitudinal beam 41 and the end of the crossbeam assembly 2.

[0063] In this embodiment, as described above, before installing the second module on the first module, it is necessary to first lift the first module with the sill beam 4 to a set height. Since the width direction of the first longitudinal beam 41 is parallel to the horizontal plane, that is to say, compared with the second longitudinal beam 42, the bottom area of the first longitudinal beam 41 is larger. The top end of the lifting structure preferably acts on the bottom side of the first longitudinal beam 41 to lift the first module with the sill beam 4 to the set height. After that, in order to ensure that the battery pack 1 can move upward smoothly until the side frame 12 contacts the bottom side of the first longitudinal beam 41, a cutout 121 for avoiding the lifting structure is provided at the side frame 12 to ensure that the upward movement of the battery pack 1 does not interfere with the lifting structure.

[0064] It can be understood that, referring to Figure 1 and Figure 3 , since the side frame 12 is provided with a cutout 121, it will weaken the lateral stiffness of the battery-integrated body structure at the longitudinal position of the cutout 121. Therefore, in order to reduce the influence of the cutout 121 on the lateral stiffness of the battery-integrated body structure at this position, the longitudinal position of the cutout 121 on the side frame 12 is preferably designed to be horizontally opposite to the end of a certain crossbeam assembly 2, that is, the cutout 121 and a certain crossbeam assembly 2 are at the same longitudinal position of the battery pack 1.

[0065] On this basis, after the second module is installed and fixed on the first module, in order to further reduce the influence of the cut 121 on the lateral stiffness of the battery-body integrated structure at this location, the support structure 5 can be placed between the end of the corresponding crossbeam assembly 2 and the first longitudinal beam 41, and the support structure 5 is fixedly connected to the first longitudinal beam 41. Moreover, since the longitudinal position of the support structure 5 on the first longitudinal beam 41 corresponds to the longitudinal position of the cut 121 on the side frame 12, when a side collision occurs, the support structure 5 at this longitudinal position can provide a side support function, improving the lateral stiffness of the battery-body integrated structure at this longitudinal position. Among them, the support structure 5 is fixedly connected to the first longitudinal beam 41. When disassembling the battery pack 1, the support structure 5 does not need to be removed downward together with the battery pack 1, thereby avoiding the support structure 5 located between the crossbeam assembly 2 and the first longitudinal beam 41 being interfered by the lifting structure when the battery pack moves downward; the support structure 5 can also be located above the cut 121, that is, the height of the support structure 5 is higher than that of the cut 121, which can also avoid the downward disassembly of the battery pack 1 being interfered by the support structure 5.

[0066] It can be understood that when a sealing plate member 6 is connected to the end of the crossbeam body 21, the support structure 5 is specifically located between the corresponding sealing plate member 6 and the first longitudinal beam 41, and a gap can be left between the support structure 5 and the corresponding sealing plate member 6 to facilitate the connection of the support structure 5 to the first longitudinal beam 41 and also facilitate the connection of the sealing plate member 6 to the crossbeam body 21.

[0067] Optionally, in addition to the side frame 12 and the first longitudinal beam 41 being fixedly connected by bolts, other two components that need to be fixed can be fixedly connected by welding to improve the overall connection strength and connection stability. For example, the crossbeam body 21 in the crossbeam assembly 2 is fixedly welded to the upper cover 11 of the battery pack 1, specifically, the crossbeam bottom plate 213 is fixedly welded to the upper cover 11, and the welding area is large; for another example, the support structure 5 is fixedly welded to the first longitudinal beam 41; for another example, the sealing plate member 6 is fixedly welded to the end of the crossbeam body 21. Among them, the sealing plate member 6 is in the shape of a plate, and flanges 61 can be provided on its front side edge, rear side edge, and upper side edge, and are fixedly welded to the crossbeam body 21 through the flanges 61, and the welding area is large.

[0068] Another embodiment of the present invention is an automobile, including the battery-body integrated structure as described above.

[0069] Since the technical improvement and technical effect of the automobile are the same as those of the battery-body integrated structure, the automobile will not be described in detail herein.

[0070] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0071] Although the present utility model is disclosed as above, the scope of protection of the present utility model disclosed is not limited thereto. Without departing from the spirit and scope of the present utility model disclosed, those skilled in the art can make various changes and modifications, and these changes and modifications will all fall within the scope of protection of the present utility model.

Claims

1. A battery-body integrated structure, characterized in that: The invention comprises a battery pack (1), a crossbeam assembly (2) and two threshold beams (4), wherein the battery pack (1) is connected between the two threshold beams (4), the crossbeam assembly (2) is arranged at the upper cover (11) of the battery pack (1), and the crossbeam assembly (2) is located between the two threshold beams (4), the crossbeam assembly (2) comprises a crossbeam body (21) and a reinforcement structure (22), the crossbeam body (21) is provided with an inner cavity (23), and the reinforcement structure (22) is located in the inner cavity (23) of the crossbeam body (21).

2. The battery-body integrated structure according to claim 1, characterized in that: In a cross section perpendicular to the extension direction of the crossbeam body (21), the cross-sectional shape of the reinforcing structure (22) is consistent with the cross-sectional shape of the crossbeam body (21), and the reinforcing structure (22) and the crossbeam body (21) are spaced apart.

3. The battery-body integrated structure according to claim 1, characterized in that: An end surface of one lateral end of the reinforcing structure (22) is flush with an end surface of one lateral end of the beam body (21); Or / and, the reinforcing structures (22) are respectively provided at two lateral ends of the inner cavity (23).

4. The battery-body integrated structure according to claim 1, characterized in that: The crossbeam body (21) comprises an integrally formed crossbeam top plate (211), a crossbeam side plate (212) and a crossbeam bottom plate (213); the crossbeam top plate (211) is spaced apart from the upper cover (11); the two ends of the crossbeam top plate (211) in the longitudinal direction are respectively connected to the crossbeam side plates (212); the crossbeam top plate (211) and the two crossbeam side plates (212) connected thereto enclose the inner cavity (23); one end of the crossbeam side plate (212) away from the crossbeam top plate (211) is connected to the crossbeam bottom plate (213), and the crossbeam bottom plate (213) is located on a side of the crossbeam side plate (212) away from the inner cavity (23); wherein the crossbeam bottom plate (213) is attached to and connected to the upper cover (11).

5. The battery-body integrated structure according to claim 4, characterized in that: The crossbeam body (21) includes at least one crossbeam top plate (211); when the crossbeam body (21) includes a plurality of crossbeam top plates (211), the plurality of crossbeam top plates (211) are spaced apart in the longitudinal direction, and each crossbeam top plate (211) is respectively connected to the crossbeam side plates (212) at both ends in the longitudinal direction, and the two crossbeam side plates (212) between two adjacent crossbeam top plates (211) are connected via a crossbeam bottom plate (213).

6. The battery-body integrated structure according to claim 1, characterized in that: It also includes a sealing plate (6), wherein the transverse end of the cross beam body (21) is spaced apart from the corresponding threshold beam (4), the sealing plate (6) is located between the cross beam body (21) and the threshold beam (4), and the sealing plate (6) is connected to the cross beam body (21).

7. The battery-body integrated structure according to claim 1, characterized in that: It also includes another crossbeam (3), the other crossbeam (3) is arranged at the upper cover (11), and the other crossbeam (3) is located between the two threshold beams (4), and the other crossbeam (3) and the crossbeam assembly (2) are arranged at intervals along the length direction of the threshold beam (4); And / or, a plurality of the cross beam assemblies (2) are arranged at intervals on the upper cover (11) along the length direction of the door sill beam (4).

8. The battery-body integrated structure according to claim 1, characterized in that: Each of the threshold beams (4) comprises an integrally formed first longitudinal beam (41) and a second longitudinal beam (42); the second longitudinal beam (42) is located below an end of the first longitudinal beam (41) away from the cross beam assembly (2) and is connected to the first longitudinal beam (41); the battery pack (1) is provided with a side frame (12) protruding toward the side of the corresponding threshold beam (4); the side frame (12) is located at the lower side of the first longitudinal beam (41) and is connected to the first longitudinal beam (41).

9. The battery-body integrated structure according to claim 8, characterized in that: It also comprises a supporting structure (5), the side frame (12) being provided with a cut-out (121), the supporting structure (5) being connected to the first longitudinal beam (41), the longitudinal position of the supporting structure (5) on the first longitudinal beam (41) corresponding to the longitudinal position of the cut-out (121) on the side frame (12), and the supporting structure (5) being located between the first longitudinal beam (41) and the end of the cross beam assembly (2).

10. An automobile, characterized in that: It comprises a battery-body integrated structure as described in any one of claims 1-9.

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