Battery and body integrated structure, vehicle

Abstract

The present disclosure relates to a battery and vehicle body integrated structure and a vehicle, the battery and vehicle body integrated structure includes a vehicle body and a power battery pack, the vehicle body includes two sill beams, the two sill beams are arranged at intervals along the left and right directions of the vehicle, and a battery pack mounting portion is arranged on each sill beam; the power battery pack includes a battery pack shell, the battery pack shell includes a shell body and a crossbeam, the shell body is connected to the battery pack mounting portion, the crossbeam extends along the left and right directions and is located between the two sill beams, the crossbeam is integrated at the top of the shell body and connected to the vehicle body, and the top of the shell body is used as the floor panel of the vehicle. Through the above technical solution, the top of the battery pack shell is integrated with a crossbeam, the crossbeam can strengthen the shell body, improve the rigidity and side impact force transmission performance of the battery pack shell, and the top of the shell body is used as a floor panel, which is conducive to improving the integration degree of the vehicle, reducing the dead weight of the vehicle body structure, achieving lightweight of the vehicle, and improving the vehicle's cruising range.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicles, and in particular, to a battery and vehicle body integrated structure and a vehicle. Background Art

[0002] As electric vehicles account for an increasing share of the vehicle market, consumers have higher and higher requirements for electric vehicles. The battery life of electric vehicles is an important reference indicator for consumers when purchasing electric vehicles. How to improve the battery life of electric vehicles is a common problem faced by the vehicle field. Summary of the invention

[0003] The purpose of the present disclosure is to provide a battery and vehicle body integrated structure and a vehicle to solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned object, the present disclosure provides a battery and vehicle body integrated structure in a first aspect, comprising:

[0005] The vehicle body includes two sill beams, the two sill beams are arranged at intervals along the left-right direction of the vehicle, and each of the sill beams is provided with a battery pack mounting portion;

[0006] A power battery pack includes a battery pack shell, wherein the battery pack shell includes a shell body and a crossbeam, wherein the shell body is connected to the battery pack mounting portion, the crossbeam extends along the left-right direction and is located between the two door sill beams, the crossbeam is integrated at the top of the shell body and connected to the vehicle body, and the top of the shell body is used as the floor panel of the vehicle.

[0007] Optionally, the battery and vehicle body integrated structure further includes a sealing layer, and the sealing layer is used to seal the gap between the top of the shell body and the vehicle body.

[0008] Optionally, the sealing layer is an annular sealing layer, the crossbeam is located on the inner side of the annular sealing layer, and the battery pack mounting portion is located on the outer side of the annular sealing layer.

[0009] Optionally, each of the threshold beams includes a threshold beam body and a sealing plate formed on the threshold beam body, the sealing plate is located above the shell body and extends toward the direction close to the cross beam, and part of the sealing layer is located between the top of the shell body and the sealing plate.

[0010] Optionally, the cross beam includes a seat cross beam, each of the threshold beams includes a threshold beam body and a connecting bracket integrated on the threshold beam body, and both ends of the seat cross beam in the left-right direction are respectively connected to two of the connecting brackets.

[0011] Optionally, the threshold beam body includes a first part and a second part located below the first part, the first part protrudes from the second part in a direction close to the seat cross beam, so that an accommodating space for accommodating the shell body is formed between the first part and the second part, the connecting bracket is integrated on the first part, and the seat cross beam is welded to the top of the shell body.

[0012] Optionally, the second portion has a first upper force transmission portion and a first lower force transmission portion located below the first upper force transmission portion, the shell body includes a side frame beam extending in the front-rear direction of the vehicle, the side frame beam has a second upper force transmission portion and a second lower force transmission portion located below the second upper force transmission portion;

[0013] The projection of the first upper force transmitting portion along the left-right direction at least partially overlaps with the projection of the second upper force transmitting portion along the left-right direction, the projection of the first lower force transmitting portion along the left-right direction at least partially overlaps with the projection of the second lower force transmitting portion along the left-right direction, the second upper force transmitting portion is configured to transmit the collision force to the top of the shell body, and the second lower force transmitting portion is configured to transmit the collision force to the bottom of the shell body.

[0014] Optionally, the second upper force transmission portion includes an upper force transmission rib, and the second lower force transmission portion includes a lower force transmission rib, at least part of the upper force transmission rib extends upwardly at an angle toward the top of the shell body, and at least part of the lower force transmission rib extends downwardly at an angle toward the bottom of the shell body.

[0015] Optionally, the side frame beam comprises a frame beam body, the interior of the frame beam body is hollow, the upper force transmission ribs and the lower force transmission ribs are arranged in the frame beam body, the second force transmission portion further comprises a first side mounting ear formed on a side of the frame beam body close to the second part, the second lower force transmission portion further comprises a second side mounting ear formed on a side of the frame beam body close to the second part, the first side mounting ear is connected to the first part, and the second side mounting ear is connected to the second part;

[0016] At least one energy absorbing cavity is formed in each of the first upper force transmitting portion, the first lower force transmitting portion, the first side mounting ear, and the second side mounting ear.

[0017] Optionally, the side frame beam and the second portion are spaced apart in the left-right direction to define a collision buffer cavity. Optionally, the vehicle body further includes a front cabin structure assembly, the cross beam includes a battery pack installation front cross beam, the battery pack installation front cross beam is located at a position near the front cabin structure assembly at the top of the shell body, and the battery pack installation front cross beam is connected to the rear of the front cabin structure assembly.

[0018] Optionally, the front cabin structure assembly includes a front panel, a connecting flange is formed on the front panel, and the top of the front cross beam for mounting the battery pack is connected to the connecting flange.

[0019] Optionally, the vehicle body also includes a rear floor assembly, and the cross beam includes a battery pack installation rear cross beam, the battery pack installation rear cross beam is located at the top of the shell body close to the rear floor assembly, and the battery pack installation rear cross beam is connected to the front of the rear floor assembly.

[0020] Optionally, the rear floor assembly includes two rear longitudinal beams and a rear floor front cross beam connected between the front ends of the two rear longitudinal beams, the front ends of the two rear longitudinal beams are overlapped with the two door sill beams respectively, and the cross beam includes a battery pack installation rear cross beam, and the top of the battery pack installation rear cross beam is connected to the rear floor front cross beam.

[0021] Optionally, the rear floor assembly also includes a rear floor located between the two rear longitudinal beams, and the power battery pack also includes a battery management module installation box, which is arranged on the top of the shell body and located behind the rear cross beam for installing the battery pack, and an opening for the battery management module installation box to pass through is formed on the rear floor.

[0022] Optionally, the shell body includes a lower shell and an upper cover plate, the upper cover plate is covered on the lower shell and together with the lower shell forms a accommodating space for accommodating a power battery, the cross beam is integrated on the top of the upper cover plate, and mounting ears are formed on the outer peripheral surface of the lower shell, the mounting ears include a front mounting ear located in front of the lower shell, a rear mounting ear located behind the lower shell, and side mounting ears located on the left and right sides of the lower shell, the side mounting ears are connected to the battery pack mounting portion, and the cross beam is located behind the front mounting ear and in front of the rear mounting ear.

[0023] Optionally, the vehicle body further comprises a supporting bracket, one end of the supporting bracket is connected to the door sill beam, and the other end of the supporting bracket is connected to the bottom of the shell body.

[0024] A second aspect of the present disclosure provides a vehicle, comprising the above-mentioned battery and vehicle body integrated structure.

[0025] Through the above technical solution, the power battery pack is installed on the door sill beam through the battery pack mounting portion, and the top of the shell body of the power battery pack is used as the floor panel of the vehicle. Compared with the solution in the related art that the floor panel and the top of the battery pack shell are arranged at intervals in the up and down directions at the same time, the top of the shell body of the power battery pack in the battery and vehicle body integrated structure provided by the present invention is used as both a part of the battery pack shell and the floor panel of the vehicle, so that the vehicle body does not need to be separately provided with a plate-like structure as a floor panel, which is conducive to reducing the structural redundancy between the battery pack and the vehicle body, improving the degree of integration of the vehicle, reducing the self-weight of the vehicle body structure, realizing the lightweight of the vehicle, and improving the vehicle's cruising range.

[0026] Furthermore, since there is no need to separately provide a plate-like structure as a floor panel, the layout space of the battery pack in the up and down directions is increased, so that the size of the battery pack in the up and down directions can be increased, thereby carrying more batteries, rationally utilizing the space in the up and down directions of the vehicle, and improving the energy density of the battery pack, thereby being able to increase the vehicle's range.

[0027] In addition, a crossbeam is integrated at the top of the shell body of the power battery pack. The crossbeam can be a seat crossbeam or an installation crossbeam, etc. The crossbeam is connected to the vehicle body, so that the edge of the shell body can be connected to the battery pack installation part of the door sill beam, and the middle of the shell body can be connected to the vehicle body through the crossbeam, so that the connection positions of the shell body and the vehicle body are increased, thereby improving the stability of the power battery pack connected to the vehicle body and reducing the shaking or vibration of the power battery pack when the vehicle moves. In addition, the crossbeam can strengthen the top of the shell body and improve the rigidity of the top of the shell body. When the vehicle is hit from the side, since the crossbeam is set between the two door sill beams and extends in the left and right direction, the door sill beam of the vehicle body can transmit external force to the crossbeam, thereby dispersing the external force, reducing the collapse and deformation of the vehicle body, and improving the safety of the vehicle.

[0028] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0030] Figure 1 is a partial exploded view of a battery and vehicle body integrated structure provided by an exemplary embodiment of the present disclosure;

[0031] Figure 2 is a partial top view of a battery and vehicle body integrated structure provided by an exemplary embodiment of the present disclosure;

[0032] Figure 3 yes Figure 2 An enlarged view of part "A" in FIG.

[0033] Figure 4 yes Figure 2 A magnified view of part "B" in FIG.

[0034] Figure 5 yes Figure 2 Enlarged view of section "C" in the figure;

[0035] Figure 6 is along Figure 2 Sectional view after cutting along the midline "DD";

[0036] Figure 7 yes Figure 6 Enlarged view of part "E" in the figure;

[0037] Figure 8 1 is a top view of a power battery pack having a battery and vehicle body integrated structure provided by an exemplary embodiment of the present disclosure.

[0038] Description of Reference Numerals

[0039] 1-body; 11-sill beam; 111-battery pack installation part; 112-sill beam body; 113-sealing plate; 114-connecting bracket; 115-cross beam connection part; 116-sill beam connection part; 117-first part; 118-second part; 1181-first force transmission part; 1182-first lower force transmission part; 119-protrusion; 12-front cabin structure assembly; 121-front wall plate; 122-connecting flange; 13-rear floor assembly; 131-rear longitudinal beam; 132-rear floor front cross beam; 133-rear floor; 14-support bracket; 15-side frame beam; 151-second force transmission part ;152-second lower force transmission part;153-upper force transmission rib;154-lower force transmission rib;155-frame beam body;156-first side mounting ear;157-second side mounting ear;16-energy absorption chamber;17-collision buffer chamber;2-power battery pack;21-battery pack shell;211-shell body;22-lower shell;221-front mounting ear;222-rear mounting ear;223-side mounting ear;23-upper cover;24-cross beam;241-seat cross beam;242-front cross beam for battery pack installation;243-rear cross beam for battery pack installation;26-reinforcement plate;3-sealing layer;4-battery management module installation box. DETAILED DESCRIPTION

[0040] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0041] In the present disclosure, unless otherwise specified, directional words such as “top, bottom, up, down, left, right, front, and back” used are all defined based on the top, bottom, up, down, left, right, front, and back of a vehicle in a normal driving state. Specifically, the directions pointing to the roof of the vehicle are top and up, the directions pointing to the chassis of the vehicle are bottom and down, the direction pointing to the left wheel of the vehicle is left, the direction pointing to the right wheel of the vehicle is right, the direction pointing to the front of the vehicle is front, and the direction pointing to the rear of the vehicle is back. Specifically, “up, down, left, right, front, and back” can be referred to in the Figure 2 and Figure 6 As shown, "inside" and "outside" refer to the inside and outside of the outline of the relevant parts. In addition, it should be noted that the terms used, such as "first", "second", etc., are used to distinguish one element from another, and do not have order and importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0042] In the related art, the middle part of the vehicle's body structure (i.e., the location of the passenger compartment) usually includes structures such as floor panels, body cross beams, and door sill beams, which together form the front floor assembly of the vehicle body. The vehicle's battery pack is usually installed below the door sill beam, and the top of the battery pack shell and the floor panel are spaced apart in the vertical direction of the vehicle. Since the top of the battery pack shell and the floor panel of the vehicle body are both large plate-like structures with large deadweight, the total weight of the vehicle body structure is large, which is not conducive to achieving lightweighting of the vehicle and affects the vehicle's cruising range. In addition, since there is a safety gap between the top of the battery pack shell and the floor panel in the vertical direction, the size of the battery pack in the vertical direction is increased, resulting in a low energy density of the battery pack and insufficient space utilization of the vehicle in the vertical direction.

[0043] In view of this, if Figures 1 to 8 As shown, the present disclosure provides a battery and vehicle body integrated structure, including a vehicle body 1 and a power battery pack 2, the vehicle body 1 includes two sill beams 11, the two sill beams 11 are spaced apart along the left-right direction of the vehicle, each sill beam 11 is provided with a battery pack mounting portion 111, the power battery pack 2 includes a battery pack shell 21, the battery pack shell 21 includes a shell body 211 and a cross beam 24, the shell body 211 is connected to the battery pack mounting portion 111, the cross beam 24 extends along the left-right direction and is located between the two sill beams 11, the cross beam 24 is integrated at the top of the shell body 211 and connected to the vehicle body 1, and the top of the shell body 211 is used as the floor panel of the vehicle.

[0044] Through the above technical solution, the power battery pack 2 is installed on the door sill beam 11 through the battery pack mounting portion 111, and the top of the shell body 211 of the power battery pack 2 is used as the floor panel of the vehicle. Compared with the solution in the related art that the floor panel and the top of the battery pack shell are arranged at intervals in the up and down directions at the same time, the top of the shell body 211 of the power battery pack 2 in the battery and vehicle body integrated structure provided by the present invention is used as both a part of the battery pack shell 21 and the floor panel of the vehicle, so that the vehicle body 1 does not need to be separately provided with a plate-like structure as a floor panel, which is conducive to reducing the structural redundancy between the battery pack and the vehicle body 1, improving the degree of integration of the vehicle, reducing the self-weight of the vehicle body 1 structure, realizing the lightweight of the vehicle, and improving the vehicle's cruising range.

[0045] Furthermore, since there is no need to separately provide a plate-like structure as a floor panel, the layout space of the power battery pack 2 in the up and down directions is increased, so that the size of the power battery pack 2 in the up and down directions can be increased, thereby carrying more batteries, rationally utilizing the space of the vehicle in the up and down directions, and improving the energy density of the battery pack, thereby being able to improve the vehicle's cruising range.

[0046] In addition, if Figure 2 As shown, the crossbeam 24 is integrated at the top of the shell body 211 of the power battery pack 2. The crossbeam 24 can be a seat crossbeam or an installation crossbeam, etc. The crossbeam 24 is connected to the vehicle body 1, so that the edge of the shell body 211 can be connected to the battery pack installation part 111 of the door sill beam 11, and the middle part of the shell body 211 can be connected to the vehicle body 1 through the crossbeam 24, so that the connection positions of the shell body 211 and the vehicle body 1 are increased, thereby improving the stability of the power battery pack 2 connected to the vehicle body 1 and reducing the shaking or vibration of the power battery pack 2 when the vehicle moves. In addition, the crossbeam 24 can strengthen the top of the shell body 211 and improve the rigidity of the top of the shell body 211. When the vehicle is hit from the side, since the crossbeam 24 is arranged between the two door sill beams 11 and extends in the left and right direction, the door sill beam 11 of the vehicle body 1 can transmit the external force to the crossbeam 24, thereby dispersing the external force, reducing the collapse and deformation of the vehicle body 1, and improving the safety of the vehicle.

[0047] The above-mentioned integrated structure of battery and vehicle body can be applied to electric vehicles as well as hybrid vehicles, which is beneficial to reducing the vehicle's own weight and improving the vehicle's cruising range.

[0048] Since the top of the shell body 211 of the power battery pack 2 serves as the floor panel of the vehicle body 1, in order to ensure good sealing above the top of the shell body 211, as shown in FIG. Figure 1As shown, optionally, the battery and vehicle body integrated structure may further include a sealing layer 3, which is used to seal the gap between the top of the shell body 211 of the battery pack and the vehicle body 1. Since the top of the shell body 211 serves as a floor panel, i.e., the floor of the passenger compartment, and the lower part of the shell body 211 is located in the chassis space at the lower part of the vehicle, the gap between the top of the shell body 211 of the battery pack and the vehicle body 1 is sealed by the sealing layer 3, so that the cabin space and the chassis space of the vehicle can be sealed from each other, and dust, impurities or liquids in the chassis space or the external environment are prevented from entering the interior of the vehicle body 1 through the gap between the top of the shell body 211 and the vehicle body 1, thereby ensuring the sealing of the cabin space of the vehicle.

[0049] Among them, the above-mentioned sealing layer 3 can be a sealing pad, or can be a sealing layer 3 formed by curing viscose or foam sealant. The present disclosure does not limit the specific composition and structure of the sealing layer 3. In the above embodiment, in order to ensure that the sealing layer 3 has good sealing performance, optionally, the sealing layer 3 can be an annular sealing layer, the crossbeam 24 can be located on the inner side of the annular sealing layer, and the battery pack installation part 111 is located on the outer side of the annular sealing layer. Since the crossbeam 24 is located at the top of the shell body 211, the crossbeam 24 and the top of the shell body 211 as the floor panel area can be located on the inner side of the annular sealing layer, and the battery pack installation part 111 is located on the outer side of the annular sealing layer, ensuring that the sealing layer can completely seal and isolate the cabin space and the cabin space of the vehicle body 1, and prevent impurities, dust or liquid from entering the cabin through the unsealed gap. In the embodiment where the crossbeam 24 is a seat crossbeam 241, since the seat crossbeam 241 is located inside the annular sealing layer, it can ensure that the space where the seat crossbeam 241 is located and the space below the vehicle are separated from each other, thereby ensuring the stability and safety of the seat crossbeam 241.

[0050] The above-mentioned sealing layer 3 is used to seal the gap between the top of the shell body 211 of the battery pack and the vehicle body 1, which refers to the gap between the position of the vehicle body 1 close to the top of the shell body 211 and the top of the shell body 211. The position of the vehicle body 1 close to the top of the shell body 211 may include the inherent structure of the vehicle body 1 (such as the front panel or the rear floor panel, etc.), or it may be a sealing connection structure formed on the vehicle body 1 to achieve sealing (such as a sealing surface, a sealing plate or a sealing flange, etc.).

[0051] like Figure 2 and Figure 3As shown, as an exemplary embodiment, each threshold beam 11 may include a threshold beam body 112 and a sealing plate 113 formed on the threshold beam body 112, the sealing plate 113 is located above the shell body 211 and extends in a direction close to the cross beam 24, and a portion of the sealing layer 3 is located between the top of the shell body 211 and the sealing plate 113. The gap between the sealing plate 113 and the top of the shell body 211 is filled with the sealing layer 3, the sealing plate 113 extends in a direction close to the cross beam 24, and the sealing plate 113 and the top of the shell body 211 are spaced apart, and the sealing plate 113 can increase the contact area with the sealing layer 3, and is not easy to generate gaps or gaps, which can ensure good sealing between the threshold beam 11 and the top of the shell body 211.

[0052] like Figure 2 and Figure 4 As shown, optionally, the front end of the top of the shell body 211 can be connected to the front panel 121 of the vehicle body 1, and the sealing layer 3 can include a front sealing portion, which fills the gap between the front end of the top of the shell body 211 and the lower part of the front panel 121 of the vehicle body 1.

[0053] Optionally, the rear end of the top of the shell body 211 can be connected to the rear floor panel 133 of the vehicle body 1, and the sealing layer 3 can include a rear sealing portion that fills the gap between the rear end of the top of the shell body 211 and the rear floor panel 133 of the vehicle body 1.

[0054] Optionally, the aforementioned front sealing portion, rear sealing portion and a portion of the sealing layer 3 filled between the door sill beam 11 and the shell body 211 can together constitute an annular sealing layer to avoid a sealing gap between the vehicle body 1 and the top of the shell body 211, thereby ensuring a sealing effect.

[0055] The crossbeam 24 integrated on the top of the shell body 211 can be a seat crossbeam 241 and / or a mounting crossbeam for mounting the battery pack housing 21. Figure 2 As shown, as an exemplary embodiment, the above-mentioned cross beam 24 may include a seat cross beam 241, each threshold beam 11 includes a threshold beam body 112 and a connecting bracket 114 integrated on the threshold beam body 112, and the two ends of the seat cross beam 241 in the left and right directions are respectively connected to the two connecting brackets 114.

[0056] In the above embodiment, the seat cross beam 241 is integrated at the top of the shell body 211 of the battery pack shell 21. When assembling the power battery pack 2, the seat cross beam 241 integrated at the top of the shell body 211 is connected to the connecting bracket 114 integrated on the threshold beam body 112, so as to realize the connection between the power battery pack 2 and the vehicle body 1. In the related art, the seat cross beam 241 is usually arranged above the floor panel, and there is no direct connection between the seat cross beam 241 and the battery pack shell 21. One end of the seat cross beam in the related art is connected to the threshold beam, and the other end is connected to the middle channel structure. In the left and right directions of the vehicle, the two seat cross beams are separated by the middle middle channel structure, and the rigidity of the two seat cross beams arranged at intervals along the left and right directions is low. Compared with the seat crossbeam in the related art, the two ends of the seat crossbeam 241 provided in the present invention are directly connected to the two door sill beams 11, and the seat crossbeam 241 can disperse the external force received by the door sill beam 11, so that the vehicle body 1 has better side collision force transmission performance. When the vehicle is hit by a side collision, the door sill beam 11 can transmit the external force received to the seat crossbeam 241, thereby dispersing the external force, reducing the deformation and collapse of the vehicle when it is subjected to external force, thereby ensuring the stability and safety of the vehicle. In addition, since the seat crossbeam 241 is integrated at the top of the shell body 211, the seat crossbeam 241 does not need to be installed on other plate-like structures (such as the floor panel in the related art), thereby reducing the number of parts used for installation and fixing between the vehicle body 1, the seat crossbeam 241 and the battery pack shell 21, improving the integration of the vehicle, reducing the vehicle's own weight, and improving the vehicle's endurance.

[0057] The above-mentioned seat cross beam 241 can be integrated into the top of the shell body 211 by bolt connection or welding. In addition, the seat cross beam 241 can be formed into a cross beam structure with a cross section of an "I" shape, a "kou" shape or a "J" shape. The present disclosure does not limit the specific structure of the seat cross beam 241. As an exemplary embodiment, the seat cross beam 241 can be formed into a cross beam structure with a cross section of a "J" shape, wherein the seat cross beam 241 includes a cross beam flange, which is arranged parallel to the top of the shell body 211 and welded to the top of the shell body 211, thereby ensuring that the seat cross beam 241 can be stably connected to the battery pack shell 21.

[0058] In order to further improve the torsional rigidity of the seat cross beam 241, the seat cross beam 241 may optionally include at least two upper convex parts spaced apart in the front-rear direction of the vehicle, with a lower concave part between each two adjacent upper convex parts (for example, the seat cross beam 241 may be formed into a structure with at least two "J"-shaped connections in cross section), and the lower concave part is connected to the top of the shell body 211. The seat cross beam 241 has good torsional rigidity and side impact force transmission performance, can strengthen the strength of the top of the battery pack shell 21, and ensure the safety of the power battery pack 2.

[0059] The seat cross beam 241 is connected to the door sill beam 11 through the connecting bracket 114. Figure 3 As shown, optionally, the connecting bracket 114 may include a cross beam connecting portion 115 and a sill beam connecting portion 116, and the cross beam connecting portion 115 and the end of the seat cross beam 241 may be mutually sleeved to ensure that the cross beam connecting portion 115 and the seat cross beam 241 are tightly connected. The sill beam connecting portion 116 may include a plurality of overlapping flanges for overlapping with the outer side surface of the sill beam 11, and the overlapping flanges may be fixedly connected to the sill beam 11 by a welding process. In the embodiment where the sill beam 11 includes a sealing plate 113, the sealing plate 113 extends from the sill beam 11 to the seat cross beam 241, and the sill beam connecting portion 116 may also include an overlapping flange for overlapping with the upper end of the sealing plate 113, that is, the sill beam 11 connecting portion is respectively connected to the outer side wall of the sill beam 11 and the upper surface of the sealing plate 113 through the overlapping flanges, and is fixed to the sill beam 11 through the plurality of overlapping flanges, so that the freedom of the sill beam 11 and the connecting bracket 114 can be limited from different directions, thereby ensuring the stability of the connection.

[0060] In an embodiment including a seat crossbar 241, optionally, as Figure 6 As shown, the sill beam body 112 may include a first portion 117 and a second portion 118 located below the first portion 117. The first portion 117 protrudes from the second portion 118 in a direction close to the seat cross beam 241, so that a storage space for accommodating the shell body 211 is formed between the first portion 117 and the second portion 118. The connecting bracket 114 is integrated on the first portion 117, and the seat cross beam 241 is welded to the top of the shell body 211. The seat cross beam 241 is connected to the first portion 117 of the sill beam body 112 through the connecting bracket 114. A storage space for accommodating the shell body 211 is formed between the first portion 117 and the second portion 118. The storage space can accommodate the battery pack housing 21, avoiding positional interference between the sill beam body 112 and the battery pack housing 21, thereby allowing the layout position of the power battery pack 2 to move upward, so that the top of the battery pack housing 21 can be used as the floor panel of the vehicle, and the top of the battery pack housing 21 can be integrated with the seat cross beam 241 under the premise of ensuring the layout height of the seat cross beam 241.

[0061] In the above embodiment, the seat cross beam 241 is connected to the first part 117 of the sill beam body 112 through the connecting bracket 114. When the first part 117 of the sill beam body 112 is crushed by external force, it can transmit the external force to the seat cross beam 241 through the connecting bracket 114. The seat cross beam 241 can disperse and absorb the external force to reduce the deformation of the vehicle body 1 and the battery pack shell 21, and protect the safety of the power battery pack 2 and the passenger compartment inside the vehicle. The above battery and vehicle body integrated structure has a first force transmission path, that is, the external force is transmitted to the connecting bracket 114 through the first part 117 of the sill beam body 112, and then transmitted to the seat cross beam 241 through the connecting bracket 114.

[0062] In order to improve the side collision safety of the vehicle, optionally, as Figure 7 As shown, the second part 118 can have a first upper force transmission portion 1181 and a first lower force transmission portion 1182 located below the first upper force transmission portion 1181, the shell body 211 includes a side frame beam 15 extending along the front-rear direction of the vehicle, the side frame beam 15 has a second upper force transmission portion 151 and a second lower force transmission portion 152 located below the second upper force transmission portion 151, the projection of the first upper force transmission portion 1181 along the left-right direction at least partially overlaps with the projection of the second upper force transmission portion 151 along the left-right direction, the projection of the first lower force transmission portion 1182 along the left-right direction at least partially overlaps with the projection of the second lower force transmission portion 152 along the left-right direction, the second upper force transmission portion 151 is configured to be able to transmit collision force to the top of the shell body 211, and the second lower force transmission portion 152 is configured to be able to transmit collision force to the bottom of the shell body 211.

[0063] When the second part 118 of the sill beam 11 is subjected to the external force of a side collision, the second part 118 can transmit the external force to the second force transmitting part 151 of the side frame beam 15 through the first upper force transmitting part 1181, and the second force transmitting part 151 can transmit the external force to the top of the shell body 211. In addition, the second part 118 can also transmit the external force to the second lower force transmitting part 152 of the side frame beam 15 through the first lower force transmitting part 1182, and the second lower force transmitting part 152 can transmit the external force to the bottom of the shell body 211. That is, the second part 118 can transmit the external force to the top and bottom plate of the shell body 211 through the side frame beam 15, respectively, disperse and absorb the external force, reduce the deformation of the middle position of the battery pack shell 21 under the action of the external force, and avoid damage to the battery cells inside the battery pack shell 21, thereby ensuring driving safety.

[0064] Alternatively, if Figure 7As shown, the second upper force transmission portion 151 may include an upper force transmission rib 153, and the second lower force transmission portion 152 may include a lower force transmission rib 154, at least a portion of the upper force transmission rib 153 extends upwardly and obliquely toward the top of the shell body 211, and at least a portion of the lower force transmission rib 154 extends downwardly and obliquely toward the bottom of the shell body 211, so that the collision force can be transmitted upward and downward to the top of the shell body 211 and the bottom plate of the shell body 211, respectively.

[0065] In addition, since the upper force transmission rib 153 extends obliquely upward, when the side collision external force is transmitted to the inside of the vehicle through the upper force transmission rib 153, the upper force transmission rib 153 can decompose the side collision external force into a vertical component force toward the upper side and a horizontal component force toward the inside of the vehicle, thereby reducing the force value of the side collision external force transmitted to the power battery pack 2 that can cause the power battery pack 2 to deform. Similarly, the lower force transmission rib 154 extends obliquely downward, and the lower force transmission rib 154 can decompose the side collision external force into a vertical component force toward the lower side and a horizontal component force toward the inside of the vehicle, thereby reducing the force value of the side collision external force transmitted to the power battery pack 2 that can cause the power battery pack 2 to deform. Moreover, the vertical component force toward the upper side decomposed by the upper force transmission rib 153 and the vertical component force toward the lower side decomposed by the lower force transmission rib 154 can offset each other, thereby reducing the force value of the side collision external force transmitted to the shell body 211 through the upper force transmission rib 153 and the lower force transmission rib 154, reducing the deformation of the shell body 211, thereby ensuring the safety of the power battery pack 2.

[0066] Optionally, the side frame beam 15 may include a frame beam body 155, which is hollow inside, and an upper force transmission rib 153 and a lower force transmission rib 154 are arranged in the frame beam body 155, and the second force transmission portion 151 also includes a first side mounting ear 156 formed on a side of the frame beam body 155 close to the second part 118, and the second lower force transmission portion 152 also includes a second side mounting ear 157 formed on a side of the frame beam body 155 close to the second part 118, the first side mounting ear 156 is connected to the first part 117, and the second side mounting ear 157 is connected to the second part 118, and at least one energy absorption cavity 16 is formed in the first force transmission portion 1181, the first lower force transmission portion 1182, the first side mounting ear 156 and the second side mounting ear 157.

[0067] In the above embodiment, when the second portion 118 of the main body of the sill beam 11 is subjected to an external force and is caused to collapse toward the interior of the vehicle, the collapse of the second portion 118 itself can absorb and buffer part of the external force of the side collision. When the second portion 118 collapses toward the interior of the vehicle until it contacts the side frame beam 15, the second portion 118 contacts the first side mounting ear 156 and the second side mounting ear 157 on the side of the frame beam main body 155 close to the second portion 118. The first side mounting ear 156 and the second side mounting ear 157 can also collapse to absorb and buffer part of the external force of the side collision. After the first side mounting ear 156 and the second side mounting ear 157 collapse, the external force can be transmitted to the frame beam body 155, and the collision force can be dispersed to the top of the shell body 211 and the bottom of the shell body 211 through the upper force transmission ribs 153 and the lower force transmission ribs 154 in the frame beam body 155. The force on the top of the shell body 211 can be further transmitted to the seat cross beam 241, thereby reducing the stress deformation of the battery pack shell 21 and ensuring the safety of the battery cells inside the battery pack shell 21.

[0068] It can be seen that the above-mentioned battery and vehicle body integrated structure can also have a second force transmission path and a third force transmission path. In the second force transmission path, the external force is transmitted to the first side mounting ear 156 through the second part 118 of the sill beam body 112. The first side mounting ear 156 can disperse and guide the external force through the upper force transmission rib 153 to transmit the horizontal component of the side impact external force to the top of the shell body 211. In the third force transmission path, the external force is transmitted to the second side mounting ear 157 through the second part 118 of the sill beam body 112. The second side mounting ear 157 can disperse and guide the external force through the lower force transmission rib 154 to transmit the horizontal component of the side impact external force to the bottom of the shell body 211. The side impact external force received by the sill beam body 112 is dispersed, absorbed and buffered by the above-mentioned first force transmission path, second force transmission path and third force transmission path respectively, so as to minimize the damage to the power battery pack 2 caused by the external force, and ensure the safety of the power battery pack 2 and the personnel in the vehicle passenger compartment.

[0069] In order to ensure the energy absorption effect, the side frame beam 15 can be optionally arranged with a spacing from the second portion 118 in the left-right direction to define a collision buffer cavity 17. When the second portion 118 is subjected to the external force of a side collision and is crushed and deformed toward the inside of the vehicle, the collision buffer cavity 17 can reserve a buffer deformation space for the crushing deformation of the second portion 118, thereby reducing the force transmitted from the second portion 118 to the side frame beam 15.

[0070] Optionally, the collision buffer cavity 17 may be defined by the first side mounting ear 156 , the second side mounting ear 157 , the frame beam body 155 , and the rocker beam body 112 .

[0071] As another embodiment, the cross beam 24 may include a mounting cross beam for connecting the battery pack housing 21 and the vehicle body 1, such as Figure 8 As shown, the mounting cross beam may be a front mounting cross beam 242 for the battery pack connected to the front of the vehicle body 1 or a rear mounting cross beam 243 for connecting to the rear of the vehicle body 1 .

[0072] like Figure 2 and Figure 4 As shown, optionally, the vehicle body 1 may include a front cabin structure assembly 12, and the cross beam 24 includes a battery pack installation front cross beam 242, which is located at the top of the shell body 211 near the front cabin structure assembly 12, and the battery pack installation front cross beam 242 is connected to the rear of the front cabin structure assembly 12. Among them, the front installation cross beam can strengthen the overall rigidity of the shell body 211, ensure the safety and stability of the top of the shell body 211, and because the front installation cross beam is located between the two door sill beams 11, the front installation cross beam can disperse the external force on the door sill beam 11, thereby improving the side impact force transmission performance of the vehicle. Furthermore, since the front mounting cross beam is connected to the front cabin structural assembly 12 of the vehicle body 1, the front mounting cross beam can improve the front collision force transmission performance of the vehicle. When the front cabin of the vehicle is subjected to external force, the external force can be dispersed through the front mounting cross beam through the front cabin structural assembly 12 of the vehicle body 1, thereby reducing the collapse deformation caused by the front cabin structural assembly 12 of the vehicle, protecting the battery cell structure inside the battery pack shell 21, and ensuring the safety of the vehicle.

[0073] In order to facilitate the connection between the front mounting crossbeam and the front cabin structure assembly 12, the front cabin structure assembly 12 optionally includes a front panel 121, and a connecting flange 122 may be formed on the front panel 121, and the top of the front crossbeam 242 for battery pack installation is connected to the connecting flange 122. The front mounting crossbeam may be connected to the front cabin structure assembly 12 by bolt connection or welding. In the bolt connection embodiment, the front mounting crossbeam may be provided with a plurality of connecting bolts spaced apart in the left-right direction, and the connecting flange 122 may be provided with a plurality of connecting holes corresponding to the mounting holes for the connecting bolts to pass through.

[0074] like Figure 2 and Figure 5As shown, optionally, the vehicle body 1 may further include a rear floor assembly 13, and the cross beam 24 includes a battery pack installation rear cross beam 243, which is located at the top of the shell body 211 near the rear floor assembly 13, and the battery pack installation rear cross beam 243 is connected to the front of the rear floor assembly 13. The installation of the rear cross beam 243 can strengthen the overall rigidity of the shell body 211, ensure the safety and stability of the top of the shell body 211, and can also disperse the external force on the threshold beam 11, thereby improving the side impact force transmission performance of the vehicle. In addition, since the installation of the rear cross beam 243 is connected to the rear floor assembly 13 of the vehicle body 1, the installation of the rear cross beam 243 can improve the rear impact force transmission performance of the vehicle. When the rear of the vehicle is subjected to external force, the external force can be dispersed through the installation of the rear cross beam 243 through the rear floor assembly 13 of the vehicle body 1, thereby reducing the collapse deformation of the rear floor assembly 13 of the vehicle, protecting the cell structure inside the battery pack shell 21, and ensuring the safety of the vehicle.

[0075] In order to facilitate the connection between the rear floor assembly 13 and the installation rear cross beam 243, optionally, the rear floor assembly 13 includes two rear longitudinal beams 131 and a rear floor front cross beam 132 connected between the front ends of the two rear longitudinal beams 131, the front ends of the two rear longitudinal beams 131 overlap the two door sill beams 11 respectively, and the cross beam 24 includes a battery pack installation rear cross beam 243, the top of the battery pack installation rear cross beam 243 is connected to the rear floor front cross beam 132. Among them, the rear floor assembly 13 overlaps the door sill beam 11 through the two rear longitudinal beams 131, ensuring a stable connection between the rear floor assembly 13 and the door sill beam 11. When the rear floor assembly 13 is subjected to external force, the external force can be transmitted to the door sill beam 11 through the rear longitudinal beam 131 to disperse it, and the rear floor front cross beam 132 can be supported between the two rear longitudinal beams 131, further improving the overall rigidity and torsion resistance of the rear floor assembly 13, and ensuring the stability and safety of the rear floor assembly 13.

[0076] The battery management module installation box 4 of the vehicle can be installed at the rear of the vehicle, that is, it can be accommodated in a position close to the rear floor assembly 13. In order to facilitate the installation of the battery management module installation box 4, as shown in FIG. Figure 2 , Figure 5 and Figure 8As shown, optionally, the rear floor assembly 13 further includes a rear floor 133 located between the two rear longitudinal beams 131, and the power battery pack 2 further includes a battery management module installation box 4, which is arranged on the top of the shell body 211 and located behind the rear cross beam 243 for installing the battery pack, and an opening for the battery management module installation box 4 to pass through is formed on the rear floor 133. The battery management module installation box 4 can be accommodated in the accommodation space surrounded by the top of the battery pack shell 21, the two rear longitudinal beams 131, the front cross beam 132 of the rear floor and the rear floor 133, and the two rear longitudinal beams 131, the front cross beam 132 of the rear floor and the rear floor 133 can all protect the battery management module installation box 4, and ensure the safety of the battery management module inside the battery management module installation box 4.

[0077] In the embodiments of the present disclosure, Figure 6 As shown, the top of the shell body 211 is close to the vehicle body 1 to serve as a floor panel. When the shell body 211 of the power battery pack 2 is an integrally formed shell structure with a housing cavity for accommodating a battery, the top of the shell body 211 refers to the top plate of the integrally formed shell structure. In the embodiment in which the shell body 211 includes an upper cover plate 23 and a lower shell body 22, the upper cover plate 23 is covered on the lower shell body 22 and together with the lower shell body 22 forms a housing space for accommodating a power battery. The top of the shell body 211 is the upper cover plate 23 of the shell body 211, and the crossbeam 24 is integrated on the top surface of the upper cover plate 23.

[0078] In order to ensure that the top of the shell body 211 has good rigidity, as Figure 8 As shown, optionally, a reinforcing plate 26 may be provided on the shell body 211, and the reinforcing plate 26 is used to strengthen the rigidity of the top of the shell body 211, and improve the safety and stability of the top of the shell body 211 as a floor panel. As an exemplary embodiment, the reinforcing plate 26 may be located at the top of the shell body 211, and the reinforcing plate 26 extends in the front-to-back direction, and the projection of the reinforcing plate 26 in the up-down direction at least partially overlaps with the projection of the door sill beam 11 and the battery cell in the up-down direction, so as to ensure that the top of the shell body 211 has a high rigidity, improve the connection strength between the battery pack shell 21 and the door sill beam 11, and protect the safety of the battery cell inside the power battery pack 2.

[0079] Optionally, the top of the shell body 211 may be an integrally formed plate-like structure, or may be formed by splicing a plurality of plates. As an exemplary embodiment, the top of the shell body 211 is formed by splicing a plurality of plates, and the thickness of the plate where the seat cross beam 241 is located is greater than the thickness of the other plates. Since the seat cross beam 241 is the load-bearing beam of the seat, the greater thickness of the plate where the seat cross beam 241 is located can prevent the top of the shell body 211 from being deformed after the seat is installed.

[0080] Specifically, the above-mentioned multiple plates may include a first plate, a second plate, a third plate and a fourth plate which are sequentially spliced ​​in the front-to-back direction, wherein the front battery mounting crossbeam is arranged on the first plate, the seat crossbeam 241 is arranged on the third plate, the battery mounting rear crossbeam 24 is arranged on the fourth plate, the thickness of the third plate is greater than the thickness of the first plate, the thickness of the first plate is greater than the thickness of the second plate, and the thickness of the second plate is greater than or equal to the thickness of the fourth plate. Since the first plate is located at the front of the shell body 211 and is used to carry the front battery mounting crossbeam 24, in order to reduce the deformation degree of the first plate as much as possible during the front collision of the vehicle, the thickness of the first plate may be thicker than the second plate and the fourth plate. By reducing the thickness of the second plate and the fourth plate, it is conducive to achieving lightweight of the vehicle and improving the cruising range of the vehicle.

[0081] In an embodiment where the housing body 211 includes a lower housing 22 and an upper cover plate 23, Figure 8 As shown, optionally, mounting ears are formed on the outer circumferential surface of the lower shell 22, and the mounting ears include a front mounting ear 221 located in front of the lower shell 22, a rear mounting ear 222 located behind the lower shell 22, and side mounting ears 223 located on the left and right sides of the lower shell 22, the side mounting ears 223 are connected to the battery pack mounting portion 111, and the crossbeam 24 is located behind the front mounting ear 221 and in front of the rear mounting ear 222. The battery pack shell 21 is connected to the vehicle body 1 through the front mounting ear 221, the side mounting ear 223 and the rear mounting ear 222, and the front mounting ear 221, the side mounting ear 223 and the rear mounting ear 222 are arranged along the circumferential direction, so that the power battery pack 2 has a connection point with the vehicle body 1 in the circumferential direction, ensuring that the power battery pack 2 has good balance and can be stably connected to the vehicle body 1. The cross beam 24 is located behind the front mounting ear 221 and in front of the rear mounting ear 222. The cross beam 24 is connected to the vehicle body 1 to provide another mounting point for the power battery pack 2 on the upper cover 23, thereby preventing the middle position of the power battery pack 2 from being suspended in the air and causing shaking or vibration to generate noise, thereby ensuring the stability and safety of the power battery pack 2.

[0082] Moreover, in an embodiment in which a front cross beam 242 for installing the battery pack is integrated at the top of the shell body 211, that is, a front cross beam 242 for installing the battery pack is integrated above the upper cover plate 23, and both the front cross beam 242 for installing the battery pack and the front mounting ear 221 can be connected to the front panel 121 of the front cabin structure assembly 12, and the connection position of the front mounting ear 221 and the front panel 121 is located in front of the connection position of the front cross beam 242 for installing the battery pack and the front panel 121, that is, the front part of the battery pack shell 21 can be connected to the front panel 121 through the front cross beam 242 for installing the battery pack and the front mounting ear 221 respectively, and the connection between the front part of the battery pack shell 21 and the front cabin structure assembly 12 of the vehicle body 1 is more stable. Moreover, when the vehicle is hit from the front, the front mounting ears 221 and the front cross beam 242 for mounting the battery pack can absorb the collision energy and reduce the intrusion of the collision energy into the battery pack. Furthermore, even if the front mounting ears 221 are disconnected from the front panel 121 during a collision, the front cross beam 242 for mounting the battery pack is also connected to the front panel 121, which can avoid the front part of the power battery pack 2 from being separated from the vehicle body 1 during a collision as much as possible, thereby ensuring the safety of the power battery pack 2.

[0083] In an embodiment in which the shell body 211 includes a battery pack installation rear cross beam 243, that is, the battery pack installation rear cross beam 243 is integrated above the upper cover plate 23, and the battery pack installation rear cross beam 243 and the rear mounting ear 222 can both be connected to the rear floor assembly 13 of the vehicle, and the connection position between the battery pack installation rear cross beam 243 and the rear floor assembly 13 is located in front of the connection position between the rear mounting ear 222 and the rear floor assembly 13. The rear end of the battery pack housing 21 can be connected to the rear floor assembly 13 through the battery pack installation rear cross beam 243 and the rear mounting ear 222 respectively. The connection between the rear end of the battery pack housing 21 and the rear floor assembly 13 of the vehicle body 1 is more stable. The rear mounting ear 222 and the battery pack installation rear cross beam 243 can both absorb collision energy and reduce the intrusion of collision energy into the power battery pack 2. In addition, even if the rear mounting ear 222 is disconnected from the rear floor assembly 13 during a collision, the battery pack installation rear cross beam 243 is also connected to the rear floor assembly 13, which can avoid the rear of the power battery pack 2 from being separated from the vehicle body 1 during a collision as much as possible, thereby ensuring the safety of the power battery pack 2.

[0084] In order to strengthen the connection strength between the sill beam 11 and the power battery pack 2, optionally, the vehicle body 1 may also include a support bracket 14, one end of the support bracket 14 is connected to the sill beam 11, and the other end of the support bracket 14 is connected to the bottom of the shell body 211, so that the support bracket 14 can support the shell body 211, improve the connection strength between the shell body 211 and the sill beam 11, and ensure the connection stability between the shell body 211 and the sill beam 11.

[0085] In embodiments where the housing body 211 includes side mounting ears 223, as shown in FIG. Figure 6 As shown, as an exemplary embodiment, the door sill beam 11 may include a first portion 117 and a second portion 118 arranged in the up-down direction, wherein the first portion 117 protrudes from the second portion 118 in a direction close to the cross beam 24 to form a protrusion 119, and a battery pack mounting portion 111 is provided on the protrusion 119, and the side mounting ear 223 of the shell body 211 can be connected to the battery pack mounting portion 111 on the protrusion, so that the battery pack shell 21 can be connected to the door sill beam 11, and the side of the battery pack shell 21 can be accommodated between the protrusion 119 and the second portion 118, so that the installation position of the power battery pack 2 can be moved up to serve as a floor panel of the vehicle body 1. The side mounting ear 223 may include a plurality of collapse cavities. The side mounting ear 223 and the second portion 118 of the sill beam 11 at least partially overlap in the left-right direction, and there is a gap between the side portion of the side mounting ear 223 close to the sill beam 11 and the sill beam 11. When the sill beam 11 is subjected to a side impact external force, the sill beam 11 collapses and deforms close to the side mounting ear 223, and can at least partially absorb and buffer the external force. When the sill beam 11 deforms inward to contact the side mounting ear 223, the collapse cavity on the side mounting ear 223 can collapse and deform, thereby absorbing the external force, avoiding damage to the battery cells inside the battery pack housing 21, and ensuring the safety of the power battery pack 2.

[0086] The second aspect of the present disclosure provides a vehicle, including the above-mentioned battery and vehicle body integrated structure. The vehicle here can be a hybrid vehicle or an electric vehicle, etc. Since the battery and vehicle body integrated structure in the vehicle can use the top of the shell body 211 of the battery pack shell 21 as the floor panel of the vehicle, the overall weight of the vehicle is reduced, so that the vehicle can have a higher endurance.

[0087] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0088] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0089] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery and vehicle body integrated structure, characterized in that: include: The vehicle body includes two sill beams, the two sill beams are arranged at intervals along the left-right direction of the vehicle, and each of the sill beams is provided with a battery pack mounting portion; A power battery pack, comprising a battery pack shell, the battery pack shell comprising a shell body and a crossbeam, the shell body being connected to the battery pack mounting portion, the crossbeam extending along the left-right direction and being located between the two sill beams, the crossbeam being integrated with the top of the shell body and connected to the vehicle body, the top of the shell body being used as a floor panel of the vehicle; The cross beam includes a seat cross beam, each of the threshold beams includes a threshold beam body and a connecting bracket integrated on the threshold beam body, and the two ends of the seat cross beam in the left and right directions are respectively connected to two connecting brackets; The threshold beam body includes a first part and a second part located below the first part, the first part protrudes from the second part in a direction close to the seat cross beam, so that an accommodating space for accommodating the shell body is formed between the first part and the second part, the connecting bracket is integrated on the first part, and the seat cross beam is welded to the top of the shell body.

2. The battery and vehicle body integrated structure according to claim 1, characterized in that: The battery and vehicle body integrated structure further includes a sealing layer, and the sealing layer is used to seal the gap between the top of the shell body and the vehicle body.

3. The battery and vehicle body integrated structure according to claim 2, characterized in that: The sealing layer is an annular sealing layer, the cross beam is located on the inner side of the annular sealing layer, and the battery pack mounting portion is located on the outer side of the annular sealing layer.

4. The battery and vehicle body integrated structure according to claim 2, characterized in that: Each of the threshold beams includes a threshold beam body and a sealing plate formed on the threshold beam body, wherein the sealing plate is located above the shell body and extends toward the direction close to the cross beam, and part of the sealing layer is located between the top of the shell body and the sealing plate.

5. The battery and vehicle body integrated structure according to claim 1, characterized in that: The second part has a first upper force transmission portion and a first lower force transmission portion located below the first upper force transmission portion, the shell body includes a side frame beam extending in the front-rear direction of the vehicle, the side frame beam has a second upper force transmission portion and a second lower force transmission portion located below the second upper force transmission portion; The projection of the first upper force transmitting portion along the left-right direction at least partially overlaps with the projection of the second upper force transmitting portion along the left-right direction, the projection of the first lower force transmitting portion along the left-right direction at least partially overlaps with the projection of the second lower force transmitting portion along the left-right direction, the second upper force transmitting portion is configured to transmit the collision force to the top of the shell body, and the second lower force transmitting portion is configured to transmit the collision force to the bottom of the shell body.

6. The battery and vehicle body integrated structure according to claim 5, characterized in that: The second upper force transmission portion includes an upper force transmission rib, and the second lower force transmission portion includes a lower force transmission rib, at least part of the upper force transmission rib extends upwardly and obliquely toward the top of the shell body, and at least part of the lower force transmission rib extends downwardly and obliquely toward the bottom of the shell body.

7. The battery and vehicle body integrated structure according to claim 6, characterized in that: The side frame beam comprises a frame beam body, the interior of the frame beam body is hollow, the upper force transmitting ribs and the lower force transmitting ribs are arranged in the frame beam body, the second upper force transmitting portion further comprises a first side mounting ear formed on a side of the frame beam body close to the second portion, the second lower force transmitting portion further comprises a second side mounting ear formed on a side of the frame beam body close to the second portion, the first side mounting ear is connected to the first portion, and the second side mounting ear is connected to the second portion; At least one energy absorbing cavity is formed in each of the first upper force transmitting portion, the first lower force transmitting portion, the first side mounting ear, and the second side mounting ear.

8. The battery and vehicle body integrated structure according to claim 5, characterized in that: The side frame beam and the second portion are spaced apart from each other along the left-right direction to define a collision buffer chamber.

9. The battery and vehicle body integrated structure according to claim 1, characterized in that: The vehicle body also includes a front cabin structure assembly, and the crossbeam includes a front crossbeam for installing a battery pack, the front crossbeam for installing the battery pack is located at the top of the shell body close to the front cabin structure assembly, and the front crossbeam for installing the battery pack is connected to the rear of the front cabin structure assembly.

10. The battery and vehicle body integrated structure according to claim 9, characterized in that: The front cabin structure assembly includes a front panel, a connecting flange is formed on the front panel, and the top of the front cross beam for installing the battery pack is connected to the connecting flange.

11. The battery and vehicle body integrated structure according to claim 1, characterized in that: The vehicle body also includes a rear floor assembly, and the cross beam includes a battery pack installation rear cross beam, which is located at the top of the shell body close to the rear floor assembly, and the battery pack installation rear cross beam is connected to the front of the rear floor assembly.

12. The battery and vehicle body integrated structure according to claim 11, characterized in that: The rear floor assembly includes two rear longitudinal beams and a rear floor front cross beam connected between the front ends of the two rear longitudinal beams, the front ends of the two rear longitudinal beams are overlapped with the two door sill beams respectively, and the cross beam includes a battery pack installation rear cross beam, and the top of the battery pack installation rear cross beam is connected to the rear floor front cross beam.

13. The battery and vehicle body integrated structure according to claim 12, characterized in that: The rear floor assembly also includes a rear floor located between the two rear longitudinal beams, and the power battery pack also includes a battery management module installation box, which is arranged on the top of the shell body and located behind the rear cross beam of the battery pack installation, and an opening for the battery management module installation box to pass through is formed on the rear floor.

14. The battery and vehicle body integrated structure according to any one of claims 1 to 13, characterized in that: The shell body includes a lower shell and an upper cover plate, the upper cover plate is covered on the lower shell and together with the lower shell form a accommodating space for accommodating a power battery, the crossbeam is integrated on the top of the upper cover plate, and mounting ears are formed on the outer peripheral surface of the lower shell, the mounting ears include a front mounting ear located in front of the lower shell, a rear mounting ear located behind the lower shell, and side mounting ears located on the left and right sides of the lower shell, the side mounting ears are connected to the battery pack mounting portion, and the crossbeam is located behind the front mounting ear and in front of the rear mounting ear.

15. The battery and vehicle body integrated structure according to any one of claims 1 to 13, characterized in that: The vehicle body further comprises a support bracket, one end of which is connected to the door sill beam, and the other end of which is connected to the bottom of the shell body.

16. A vehicle, characterized in that: It comprises a battery and vehicle body integrated structure as described in any one of claims 1-15.

Images