Front wall plate lower cross beam, front cabin assembly and vehicle

Abstract

The utility model relates to a front wall plate lower cross beam, a front cabin assembly and a vehicle. The front wall plate lower cross beam structurally comprises a first part, a second part and a third part which are sequentially connected. The first component is connected with the first longitudinal beam; the third component is connected with the second longitudinal beam; and the bottom surface of the second component is provided with a concave structure, and the concave structure is used for accommodating the quick-change connecting structure of the battery pack. The inner concave structure is arranged on the bottom surface of the second part of the front wall plate lower cross beam, so that a quick-change connecting structure of the battery pack of the vehicle can be arranged in the inner concave structure, and the quick-change connecting structure of the battery pack can be avoided through the inner concave structure of the front wall plate lower cross beam; the quick-change connecting structure of the battery pack does not need to be arranged in the front cabin, so that the arrangement of the quick-change connecting structure of the battery pack is prevented from interfering with the arrangement of a steering system of the vehicle, and the arrangement of the steering system is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and in particular relates to a front wall plate lower cross beam, a front engine room assembly and a vehicle. Background Art

[0002] When replacing batteries in existing battery-swap models, the battery pack generally only moves along the Z direction (i.e., the vertical direction). The quick-change connection structures such as the high and low voltage wiring harness plugs and water pipe plugs on the battery pack must also move in the Z direction to achieve docking with the corresponding quick-change connection structures on the vehicle body.

[0003] In the related art, it is necessary to utilize the front cabin to avoid the quick-change connection structure of the battery pack, that is, the quick-change connection structure of the battery pack needs to be arranged in the front cabin, which easily interferes with the arrangement of the vehicle's steering system, thereby causing difficulties in the arrangement of the steering system. Utility Model Content

[0004] The technical problem to be solved by the present invention is: in view of the problem in the related technology that the front engine room needs to be used to avoid the quick-change connection structure of the battery pack, which leads to difficulties in arranging the steering system, a front wall panel lower cross beam, a front engine room assembly and a vehicle are provided.

[0005] In order to solve the above problems, on the one hand, an embodiment of the utility model provides a front wall panel lower cross beam, which is used to connect the first longitudinal beam and the second longitudinal beam of the vehicle, and the front wall panel lower cross beam includes a first component, a second component and a third component which are connected in sequence along the left and right directions of the vehicle; the first component is connected to the first longitudinal beam; the third component is connected to the second longitudinal beam; the bottom surface of the second component is provided with a concave structure, and the concave structure is used to accommodate the quick-change connection structure of the battery pack.

[0006] Optionally, the first component and the first longitudinal beam are connected to the first side of the second component; the third component and the second longitudinal beam are connected to the first side of the second component; and the concave structure has an opening located on the first side of the second component.

[0007] Optionally, the concave structure extends backward to a side end of the second component facing away from the opening.

[0008] Optionally, the lower cross beam of the front wall panel also includes a reinforcing beam, and the reinforcing beam is arranged in the concave structure; in the left and right directions of the vehicle, both ends of the reinforcing beam are respectively connected to the side walls of the concave structure.

[0009] Optionally, a plurality of reinforcing ribs are provided on the second component, wherein at least two of the reinforcing ribs are cross-arranged.

[0010] Optionally, the plurality of reinforcing ribs include a first reinforcing rib and a second reinforcing rib, the first reinforcing rib and the second reinforcing rib are cross-arranged, the first reinforcing rib extends along the left-right direction of the vehicle, and the second reinforcing rib extends along the front-rear direction of the vehicle.

[0011] Optionally, the plurality of reinforcing ribs further include a third reinforcing rib, wherein the third reinforcing rib is cross-arranged with the first reinforcing rib, and the third reinforcing rib is cross-arranged with the second reinforcing rib.

[0012] Optionally, a groove is provided on the top surface of the second component, and the reinforcing rib is provided in the groove; the reinforcing rib located in the groove connects the bottom wall of the groove and the side wall of the groove.

[0013] Optionally, a groove is provided on the top surface of the second component, and the lower cross beam of the front wall plate further includes a cover plate, which is connected to the top surface of the second component and encloses the groove wall of the groove to form a cavity structure.

[0014] Optionally, a protruding structure is provided on the top surface of the second component, the protruding structure is opposite to the concave structure, and the protruding structure is used to connect to the central channel reinforcement plate.

[0015] Optionally, the top surface of the second component is provided with grooves, and the number of the grooves is multiple, a part of the grooves is provided between the protruding structure and the first component, and another part of the grooves is provided between the protruding structure and the third component.

[0016] In order to solve the above problems, on the other hand, an embodiment of the utility model provides a front cabin assembly, including a first longitudinal beam, a second longitudinal beam and a lower cross beam of the front wall panel as described in any one of the above items; the rear end of the first longitudinal beam is connected to the front end of the first component, and the rear end of the second longitudinal beam is connected to the front end of the third component.

[0017] Optionally, the front cabin assembly also includes a central channel reinforcement plate and a floor crossbeam; in the front-to-rear direction of the vehicle, the floor crossbeam is located on the side of the lower crossbeam of the front wall panel away from the first longitudinal beam; one end of the central channel reinforcement plate is connected to the second component; the other end of the central channel reinforcement plate is connected to the floor crossbeam.

[0018] Optionally, the front cabin assembly also includes a third longitudinal beam, one end of the third longitudinal beam is connected to the second component, the other end of the third longitudinal beam is connected to the floor cross beam, the third longitudinal beam is located between the central channel reinforcement plate and the first component, the third longitudinal beam is connected to the cover plate of the lower cross beam of the front wall panel, the third longitudinal beam is connected to the cover plate of the lower cross beam of the front wall panel, and is located on the side of the cover plate away from the second component; and / or, the front cabin assembly also includes a fourth longitudinal beam, one end of the fourth longitudinal beam is connected to the second component, the other end of the fourth longitudinal beam is connected to the floor cross beam, the fourth longitudinal beam is located between the central channel reinforcement plate and the third component, the fourth longitudinal beam is connected to the cover plate of the lower cross beam of the front wall panel, the fourth longitudinal beam is connected to the cover plate of the lower cross beam of the front wall panel, and is located on the side of the cover plate away from the second component.

[0019] Optionally, in the left and right directions of the vehicle, the central channel reinforcement plate includes a first connecting plate, a second connecting plate and a third connecting plate connected in sequence; the raised structure of the lower cross beam of the front wall plate is located between the first connecting plate and the third connecting plate; the first connecting plate and the third connecting plate are both connected to the side of the raised structure; and the second connecting plate is connected to the surface of the raised structure facing away from the bottom surface of the second component.

[0020] In order to solve the above problems, on the other hand, an embodiment of the present invention provides a vehicle, comprising any one of the front engine compartment assemblies described above.

[0021] In the front wall panel lower cross beam, front engine compartment assembly and vehicle provided in the embodiments of the utility model, a concave structure is provided on the bottom surface of the second component of the front wall panel lower cross beam, so that the quick-change connection structure of the battery pack of the vehicle can be arranged in the concave structure. The arrangement of this embodiment can avoid the quick-change connection structure of the battery pack through the concave structure of the front wall panel lower cross beam, so that there is no need to arrange the quick-change connection structure of the battery pack in the front engine compartment, thereby avoiding the setting of the quick-change connection structure of the battery pack from interfering with the arrangement of the steering system of the vehicle, thereby facilitating the arrangement of the steering system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a partial structural diagram of a front cabin assembly provided by an embodiment of the utility model. Figure 1 ;

[0023] Figure 2 This is a partial structural diagram of a front cabin assembly provided by an embodiment of the utility model. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of the second component of the front cabin assembly provided by an embodiment of the utility model Figure 1;

[0025] Figure 4 This is a schematic diagram of the structure of the second component of the front cabin assembly provided by an embodiment of the utility model Figure 2 ;

[0026] Figure 5 This is a partial structural diagram of a front cabin assembly provided by an embodiment of the utility model. Figure 3 .

[0027] Reference numerals:

[0028] 100. Front engine room assembly;

[0029] 10, first longitudinal beam; 20, second longitudinal beam; 30, lower cross beam of front wall plate; 40, first mounting plate; 50, second mounting plate; 60, central channel reinforcement plate; 601, first connecting plate; 602, second connecting plate; 603, third connecting plate; 70, floor cross beam; 80a, third longitudinal beam; 80b, fourth longitudinal beam; 90a, first threshold beam; 90b, second threshold beam;

[0030] 1. first component; 11. first connecting portion; 12. second connecting portion; 13. third connecting portion;

[0031] 2. second component; 21. first surface; 22. concave structure; 23. reinforcing rib; 231. first reinforcing rib; 232. second reinforcing rib; 233. third reinforcing rib; 24. second surface; 25. groove; 26. convex structure; 27. third surface; 28. fourth surface;

[0032] 3. The third component;

[0033] 4. Cover plate; 41. First cover plate; 42. Second cover plate;

[0034] 5. Strengthen the beam;

[0035] 6. The first reinforcement plate;

[0036] 7. Second reinforcement plate. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0038] like Figure 1As shown, in one embodiment, the front cabin assembly 100 includes a first longitudinal beam 10, a second longitudinal beam 20 and a front wall panel lower cross beam 30; the first longitudinal beam 10 and the second longitudinal beam 20 are both connected to the front wall panel lower cross beam 30. In addition, in the width direction of the front wall panel lower cross beam 30, the first longitudinal beam 10 and the second longitudinal beam 20 protrude from the same side of the front wall panel lower cross beam 30.

[0039] In actual scenarios, the width direction of the front wall lower cross beam 30 is parallel to the front and rear direction of the vehicle; the first longitudinal beam 10 and the second longitudinal beam 20 are both front longitudinal beams, and both protrude in front of the front wall lower cross beam 30; in addition, after the front engine compartment assembly 100 is assembled with other components to form a vehicle, the front of the front wall lower cross beam 30 is the front engine compartment, and the rear of the front wall lower cross beam 30 is the passenger compartment. Figure 1 In the figure, the width direction of the lower cross beam 30 of the front wall plate is parallel to the X-axis; the length direction of the lower cross beam 30 of the front wall plate is parallel to the left-right direction of the vehicle and parallel to the Y-axis; the thickness direction of the lower cross beam 30 of the front wall plate is parallel to the up-down direction of the vehicle and parallel to the Z-axis; any two of the X-axis, Y-axis and Z-axis are perpendicular to each other.

[0040] like Figure 1 and Figure 2 As shown, in one embodiment, the structure of the lower cross beam 30 of the front wall plate includes a first component 1, a second component 2 and a third component 3 which are sequentially connected along the left-right direction of the vehicle; wherein the first component 1 is connected to the first longitudinal beam 10, and the third component 3 is connected to the second longitudinal beam 20; in the up-down direction of the vehicle, the second component 2 has a first surface 21, and an inner concave structure 22 is provided on the first surface 21, and the inner concave structure 22 is used to accommodate the quick-change connection structure of the battery pack.

[0041] When the front wall lower cross beam 30 is applied to a vehicle, the first surface 21 is the bottom surface of the second component 2 , and the rear end of the first longitudinal beam 10 is connected to the front end of the first component 1 , and the rear end of the second longitudinal beam 20 is connected to the front end of the third component 3 .

[0042] In this embodiment, when the front cabin assembly 100 is combined with other components to form a vehicle, the quick-change connection structure of the vehicle's battery pack can be set in the recessed structure 22, that is, the quick-change connection structure of the battery pack is avoided by the recessed structure 22 of the lower cross beam 30 of the front wall panel. In this way, there is no need to set the quick-change connection structure of the battery pack in the front cabin, thereby avoiding the setting of the quick-change connection structure of the battery pack from interfering with the arrangement of the vehicle's steering system, thereby facilitating the arrangement of the steering system.

[0043] In addition, after the cabin assembly 100 is combined with other components to form a vehicle, the first component 1 and the third component 3 are both connected to the sill beam.

[0044] In one embodiment, at least one of the first component 1, the second component 2 and the third component 3 is a casting. When a component is designed as a casting, the production and preparation of the component can be facilitated. Preferably, the first component 1, the second component 2 and the third component 3 are all castings.

[0045] In one embodiment, at least one of the first component 1, the second component 2 and the third component 3 is an aluminum alloy component. The use of aluminum alloy components can reduce weight and facilitate lightweight design of the vehicle. Preferably, the first component 1, the second component 2 and the third component 3 are all aluminum alloy components. Moreover, when any one of the first component 1, the second component 2 and the third component 3 is an aluminum alloy component, the aluminum alloy component can be a casting formed by casting an aluminum alloy material.

[0046] like Figure 3 As shown, in one embodiment, a plurality of reinforcing ribs 23 are provided on the second component 2, and the strength of the second component 2 can be improved by providing the reinforcing ribs 23. Here, "plurality" means greater than or equal to two, and the term "plurality" has the same meaning in this article and will not be repeated in the following text.

[0047] like Figure 3 As shown, in one embodiment, at least two reinforcing ribs 23 are cross-arranged, which can further improve the strength of the second component 2. Wherein, "two reinforcing ribs 23 are cross-arranged" means that the two reinforcing ribs 23 extend in different directions respectively, and the two reinforcing ribs 23 cross-contact.

[0048] like Figure 3 As shown, in one embodiment, the plurality of reinforcing ribs 23 include a first reinforcing rib 231 and a second reinforcing rib 232, the first reinforcing rib 231 and the second reinforcing rib 232 are arranged crosswise, the first reinforcing rib 231 extends along the left-right direction of the vehicle, and the second reinforcing rib 232 extends along the front-back direction of the vehicle. That is, the first reinforcing rib 231 is equivalent to extending along the front-back direction of the vehicle, which can improve the torsional rigidity of the second component 2 and better transmit the force along the left-right direction of the vehicle; the second reinforcing rib 232 is equivalent to extending along the front-back direction of the vehicle, which can reduce the intrusion of the lower cross beam 30 of the front wall plate into the passenger compartment during the collision process, thereby improving the collision safety.

[0049] The number of either the first reinforcing rib 231 or the second reinforcing rib 232 may be one or more. When the number of both the first reinforcing rib 231 and the second reinforcing rib 232 is more than one, one first reinforcing rib 231 is cross-arranged with at least one second reinforcing rib 232, and one second reinforcing rib 232 is cross-arranged with at least one first reinforcing rib 231. In some scenarios, some first reinforcing ribs 231 and some second reinforcing ribs 232 may cross-arrange to form a "well"-shaped structure.

[0050] In addition, if Figure 3 As shown, in one embodiment, the plurality of reinforcing ribs 23 further include a third reinforcing rib 233, the third reinforcing rib 233 is arranged crosswise with the first reinforcing rib 231, and the third reinforcing rib 233 is arranged crosswise with the second reinforcing rib 232. The third reinforcing rib 233 extends along a first direction, the first direction is not parallel to the left-right direction of the vehicle, and the first direction is not parallel to the front-rear direction of the vehicle.

[0051] In the scenario where the number of both the first reinforcing rib 231 and the second reinforcing rib 232 is plural, the above-mentioned “the third reinforcing rib 233 and the first reinforcing rib 231 are cross-arranged” may refer to the third reinforcing rib 233 and at least one first reinforcing rib 231 being cross-arranged, and the above-mentioned “the third reinforcing rib 233 and the second reinforcing rib 232 are cross-arranged” may refer to the third reinforcing rib 233 and at least one second reinforcing rib 232 being cross-arranged.

[0052] The number of the third reinforcing ribs 233 may be one or more. When the number of the third reinforcing ribs 233 is more than one, any third reinforcing rib 233 will be arranged crosswise with at least one first reinforcing rib 231, and any third reinforcing rib 233 will be arranged crosswise with at least one second reinforcing rib 232. In some scenarios, some first reinforcing ribs 231, some second reinforcing ribs 232, and some third reinforcing ribs 233 may crosswise form a "M"-shaped structure.

[0053] In some scenarios, the first direction may be perpendicular to the up-down direction of the vehicle, and the angle between the first direction and the front-rear direction of the vehicle may be 45 degrees.

[0054] In other embodiments, the plurality of reinforcing ribs 23 may also include the first reinforcing rib 231 and the second reinforcing rib 232 described above, but not the third reinforcing rib 233 .

[0055] like Figure 3 As shown, in one embodiment, in the up-down direction of the vehicle, the second component 2 further has a second surface 24, and the second surface 24 is provided with a groove 25, which can reduce the weight of the second component 2 and further contribute to the lightweight design of the vehicle body.

[0056] The first surface 21 and the second surface 24 are respectively located on opposite sides of the second component 2 . When the first surface 21 is the bottom surface of the second component 2 , the second surface 24 may be the top surface of the second component 2 .

[0057] When the second component 2 is provided with a reinforcing rib 23, the groove 25 may be provided with a reinforcing rib 23, and the reinforcing rib 23 located in the groove 25 connects the bottom wall of the groove 25 and the side wall of the groove 25, so as to improve the strength of the groove wall of the groove 25. There may be multiple reinforcing ribs 23 located in the groove 25, including a first reinforcing rib 231, a second reinforcing rib 232 and a third reinforcing rib 233.

[0058] In one embodiment, when the second surface 24 is provided with a groove 25, the front wall lower cross beam 30 further includes a cover plate 4 (refer to Figure 1 ), the cover plate 4 is connected to the second surface 24, and is enclosed with the groove wall of the groove 25 to form a cavity structure. This can further improve the strength of the lower cross beam 30 of the front wall plate, and reduce the amount of intrusion of the lower cross beam 30 of the front wall plate into the passenger compartment during a collision. The cover plate 4 can be an aluminum alloy cover plate.

[0059] In addition, when a reinforcing rib 23 is provided in the groove 25 , the lower surface of the cover plate 4 may also be in contact with the reinforcing rib 23 .

[0060] In addition, the cover plate 4 may be an opening of the closed groove 25, wherein the opening of the groove 25 is the opening formed by the groove 25 on the second surface 24. The cover plate 4 may be an opening of the closed groove 25 completely, or the cover plate 4 may be an opening of only a portion of the closed groove 25. When the cover plate 4 completely closes the opening of the groove 25, the projection of the cover plate 4 completely covers the projection of the opening of the groove 25 in an orthographic projection on a plane perpendicular to the up-down direction of the vehicle; when the cover plate 4 closes only a portion of the opening of the groove 25, the projection of the cover plate 4 does not completely cover the projection of the opening of the groove 25 in an orthographic projection on a plane perpendicular to the up-down direction of the vehicle.

[0061] like Figure 3 As shown, in one embodiment, the second surface 24 is provided with a protruding structure 26, which is opposite to the concave structure 22, and is used to connect the central channel reinforcement plate 60. Wherein, "the protruding structure 26 is opposite to the concave structure 22" means that in the orthographic projection on a plane perpendicular to the up-down direction of the vehicle, the projection of the protruding structure 26 and the projection of the concave structure 22 at least partially overlap.

[0062] like Figure 3As shown, in one embodiment, when the second surface 24 is provided with both a protruding structure 26 and a groove 25, the number of the grooves 25 can be multiple, with a portion of the grooves 25 being provided between the protruding structure 26 and the first component 1, and another portion of the grooves 25 being provided between the protruding structure 26 and the third component 3. Figure 3 In the illustrated embodiment, there are two grooves 25 , one groove 25 is disposed between the first component 1 and the protruding structure 26 , and the other groove 25 is disposed between the second component 2 and the protruding structure 26 .

[0063] In addition, when there are multiple grooves 25, there can be multiple cover plates 4. One groove 25 can correspond to one cover plate 4, and one cover plate 4 and the groove wall of one groove 25 form a cavity structure; or at least one cover plate 4 corresponds to multiple grooves 25, and the groove wall of each groove 25 corresponding to the cover plate 4 can form a cavity structure with the cover plate 4; or at least one groove 25 corresponds to multiple cover plates 4, and the multiple cover plates 4 corresponding to the groove 25 and the groove wall of the groove 25 together form a cavity structure.

[0064] like Figure 2 As shown, in one embodiment, the front wall lower cross beam 30 further includes a reinforcing beam 5, which is disposed in the inner concave structure 22; and in the left-right direction of the vehicle, both ends of the reinforcing beam 5 are respectively connected to the side walls of the inner concave structure 22. In this way, the strength of the second component 2 can be improved, and at the same time, a force transmission channel can be formed through the reinforcing beam 5, and the force transmitted along the left-right direction of the vehicle can be transmitted from one side of the inner concave structure 22 to the other side of the inner concave structure 22 through the reinforcing beam 5.

[0065] like Figure 2 As shown, in one embodiment, the first component 1 and the first longitudinal beam 10 are connected to the first side of the second component 2; the third component 3 and the second longitudinal beam 20 are connected to the first side of the second component 2; the concave structure 22 has an opening located on the first side of the second component 2, so that the battery pack replacement operation is more convenient. Among them, the first side is the front side of the second component 2, and the concave structure 22 penetrates the second component 2 forward. After the vehicle is assembled, the concave structure 22 is connected to the front cabin of the vehicle.

[0066] like Figure 2 and Figure 4 As shown, the concave structure 22 extends backward to the side end of the second component 2 facing away from the outlet, and this arrangement can also facilitate the battery replacement operation of the battery pack. Among them, the side end of the second component 2 facing away from the outlet is the rear side of the second component 2, and the concave structure 22 penetrates the second component 2 backward. At this time, in the front and rear direction of the vehicle, the concave structure 22 completely penetrates the second component 2.

[0067] like Figure 2 and Figure 4As shown, in the front-to-back direction of the vehicle, the second component 2 has a third surface 27 and a fourth surface 28; the third surface 27 and the fourth surface 28 are respectively located on opposite sides of the second component 2, and when the front wall lower cross beam 30 is applied to the vehicle, the third surface 27 is the front surface of the second component 2, and the fourth surface 28 is the rear surface of the second component 2. In addition, in the up-down direction of the vehicle, the two ends of the third surface 27 are respectively connected to the first surface 21 and the second surface 24, and the two ends of the fourth surface 28 are respectively connected to the first surface 21 and the second surface 24.

[0068] In the front-rear direction of the vehicle, the first component 1 , the second component 2 , the first longitudinal beam 10 and the second longitudinal beam 20 are all located in front of the second component 2 , and the concave structure 22 penetrates to the third surface 27 and the fourth surface 28 .

[0069] like Figure 2 As shown, in one embodiment, in the front-rear direction of the vehicle, the first component 1 includes a first connection portion 11, a second connection portion 12 and a third connection portion 13 which are connected in sequence, wherein the first connection portion 11 is used to connect to the first longitudinal beam 10, the second connection portion 12 is used to connect to the second component 2, and the third connection portion 13 is used to connect to the sill beam.

[0070] In addition, in the left-right direction of the vehicle, the first connection portion 11 and the third connection portion 13 are spaced apart from each other, and the first connection portion 11 is located on a side of the third connection portion 13 close to the third member 3 .

[0071] In one embodiment, the structure of the third component 3 is the same as that of the first component 1, and the third component 3 and the first component 1 are mirror-symmetrical with respect to a plane perpendicular to the left-right direction of the vehicle (the plane is defined as the first plane). After the front cabin assembly 100 is assembled with other components to form a vehicle, the vehicle is divided into two parts that are mirror-symmetrical with respect to the first plane.

[0072] like Figure 1 and Figure 2 As shown, in one embodiment, the front cabin assembly 100 also includes a first mounting plate 40, which connects the first longitudinal beam 10 and the first component 1. The first mounting plate 40 can play a reinforcing role, thereby improving the connection firmness between the first longitudinal beam 10 and the first component 1.

[0073] In one embodiment, the first mounting plate 40 is connected to the first connecting portion 11 to form a first receiving hole, the first longitudinal beam 10 is installed in the first receiving hole, and the first longitudinal beam 10 is connected to the hole wall of the first receiving hole.

[0074] like Figure 1 and Figure 2As shown, in one embodiment, the front cabin assembly 100 also includes a second mounting plate 50, which connects the second longitudinal beam 20 and the third component 3. The second mounting plate 50 can play a reinforcing role, thereby improving the connection firmness between the second longitudinal beam 20 and the third component 3.

[0075] In one embodiment, the second mounting plate 50 is connected to the first connecting portion 11 of the third component 3 to form a second receiving hole, the second longitudinal beam 20 is installed in the second receiving hole, and the second longitudinal beam 20 is connected to the hole wall of the second receiving hole.

[0076] like Figure 1 and Figure 5 As shown, in one embodiment, the front cabin assembly 100 also includes a central channel reinforcement plate 60 and a floor cross beam 70; in the front-to-rear direction of the vehicle, the floor cross beam 70 is located on the side of the front wall panel lower cross beam 30 away from the first longitudinal beam 10; one end of the central channel reinforcement plate 60 is connected to the second component 2; the other end of the central channel reinforcement plate 60 is connected to the floor cross beam 70.

[0077] In addition, in the front-to-rear direction of the vehicle, there may be a certain distance between the front wall lower cross beam 30 and the floor cross beam 70 , and the floor cross beam 70 may be used to install the driver's seat and the passenger seat.

[0078] like Figure 5 As shown, in one embodiment, when the second component 2 is provided with a protruding structure 26, the central channel reinforcement plate 60 may be connected to the protruding structure 26. In addition, in the left-right direction of the vehicle, the central channel reinforcement plate 60 includes a first connecting plate 601, a second connecting plate 602 and a third connecting plate 603 connected in sequence; the first connecting plate 601 and the third connecting plate 603 are both located on the side of the second connecting plate 602 close to the first surface 21, and the three can form a "J"-shaped structure. In addition, after the central channel reinforcement plate 60 is assembled with the second component 2, the protruding structure 26 is located between the first connecting plate 601 and the third connecting plate 603; and the first connecting plate 601 and the third connecting plate 603 are both connected to the side of the protruding structure 26; the second connecting plate 602 is connected to the surface of the protruding structure 26 away from the first surface 21. Among them, the surface of the protruding structure 26 away from the first surface 21 is the upper surface of the protruding structure 26.

[0079] like Figure 1 and Figure 5As shown, in one embodiment, the front cabin assembly 100 also includes a third longitudinal beam 80a; in the front-to-rear direction of the vehicle, one end of the third longitudinal beam 80a is connected to the second component 2, the other end of the third longitudinal beam 80a is connected to the floor cross beam 70, and the third longitudinal beam 80a is located between the central channel reinforcement plate 60 and the first component 1; and / or, the front cabin assembly 100 also includes a fourth longitudinal beam 80b, one end of the fourth longitudinal beam 80b is connected to the second component 2, the other end of the fourth longitudinal beam 80b is connected to the floor cross beam 70, and the fourth longitudinal beam 80b is located between the central channel reinforcement plate 60 and the third component 3.

[0080] When the front of the vehicle is hit, the collision force can be transmitted from the first longitudinal beam 10 to the first component 1, and then transmitted backward from the first component 1. For example, when the first component 1 is connected to the sill beam (the sill beam is defined as the first sill beam 90a), the collision force can be transmitted from the first component 1 to the first sill beam 90a; in addition, after the collision force is transmitted from the first longitudinal beam 10 to the first component 1, it can also be transmitted from the first component 1 to the second component 2, and then from the second component 2 to the third longitudinal beam 80a, and then from the third longitudinal beam 80a to the floor cross beam 70; in addition, after the collision force is transmitted from the first longitudinal beam 10 to the second component 2, it can also be transmitted from the second component 2 to the central channel reinforcement plate 60, and then transmitted backward from the central channel reinforcement plate 60.

[0081] Similarly, the collision force on the second longitudinal beam 20 can be transmitted to the third component 3, and can be transmitted from the third component 3 to the threshold beam connected to the third component 3 (the threshold beam is defined as the second threshold beam 90b); moreover, after the collision force is transmitted from the second longitudinal beam 20 to the third component 3, it can also be transmitted from the third component 3 to the second component 2, and then from the second component 2 to the fourth longitudinal beam 80b, and then from the fourth longitudinal beam 80b to the floor cross beam 70; in addition, after the collision force is transmitted from the second longitudinal beam 20 to the second component 2, it can also be transmitted from the second component 2 to the central channel reinforcement plate 60, and then transmitted backwards from the central channel reinforcement plate 60.

[0082] This arrangement can provide multiple force transmission paths, which can effectively disperse the collision force during a frontal collision, reduce the intrusion of the lower cross beam 30 of the front wall panel into the passenger compartment during a collision, protect the safety of the occupants' legs, and improve collision safety.

[0083] In one embodiment, when the second component 2 is provided with a cover plate 4, the third longitudinal beam 80a is connected to the cover plate 4 and is located on the side of the cover plate 4 away from the second component 2, that is, at this time, the third longitudinal beam 80a is connected to the second component 2 through the cover plate 4. That is, the third longitudinal beam 80a is connected to the upper surface of the cover plate 4.

[0084] When the second component 2 is provided with a cover plate 4, the fourth longitudinal beam 80b is connected to the cover plate 4 and is located on the surface of the cover plate 4 facing away from the second component 2, that is, the fourth longitudinal beam 80b is connected to the second component 2 through the cover plate 4. That is, the fourth longitudinal beam 80b is connected to the upper surface of the cover plate 4.

[0085] It should be understood that when the third longitudinal beam 80a and the fourth longitudinal beam 80b are both connected to the cover plate 4, the cover plate 4 connected to the third longitudinal beam 80a and the fourth longitudinal beam 80b is not the same cover plate 4. Figure 5 In the illustrated embodiment, two cover plates 4 are provided, which are a first cover plate 41 and a second cover plate 42, wherein the first cover plate 41 is located between the protruding structure 26 and the first component 1, and the second cover plate 42 is located between the protruding structure 26 and the third component 3, the third longitudinal beam 80a is connected to the first cover plate 41, and the fourth longitudinal beam 80b is connected to the second cover plate 42.

[0086] In one embodiment, when the third longitudinal beam 80a is connected to the cover plate 4, the lower cross beam 30 of the front wall plate further includes a first reinforcing plate 6 (refer to Figure 4 ), the first reinforcing plate 6 is arranged in the groove 25 corresponding to the cover plate 4 and connected to the cover plate 4, the cover plate 4 is thickened by the first reinforcing plate 6, and the area of ​​the cover plate 4 used to connect the third longitudinal beam 80a is opposite to the first reinforcing plate 6, so that the third longitudinal beam 80a can be connected more firmly. The cover plate 4 may be the first cover plate 41. In addition, "the area of ​​the cover plate 4 used to connect the third longitudinal beam 80a is opposite to the first reinforcing plate 6" may mean that in the orthographic projection on the plane perpendicular to the up-down direction of the vehicle, the projection of the first reinforcing plate 6 and the projection of the area of ​​the cover plate 4 used to connect the third longitudinal beam 80a at least partially overlap.

[0087] In one scenario, the third longitudinal beam 80a and the first cover plate 41 may be connected by welding. In this case, the area of ​​the first cover plate 41 used to connect the third longitudinal beam 80a may refer to the area of ​​the first cover plate 41 used to connect the third longitudinal beam 80a through the welding structure. In addition, the first cover plate 41 and the first reinforcing plate 6 may be connected by welding.

[0088] In addition, when a reinforcing rib 23 is provided in the groove 25 corresponding to the first cover plate 41, the surface of the first reinforcing plate 6 facing away from the first cover plate 41 can also be in contact with the reinforcing rib 23 in the groove 25. At this time, the first reinforcing plate 6 and the reinforcing rib 23 in contact with it can be welded together; when no reinforcing rib 23 is provided in the groove 25 corresponding to the first cover plate 41, the surface of the first reinforcing plate 6 facing away from the first cover plate 41 can also be in contact with the bottom wall in the groove 25. At this time, the first reinforcing plate 6 and the bottom wall in the groove 25 can be welded together.

[0089] In one embodiment, when the fourth longitudinal beam 80b is connected to the cover plate 4, the lower cross beam 30 of the front wall plate further includes a second reinforcing plate 7 (refer to Figure 4 ), the second reinforcing plate 7 is arranged in the groove 25 corresponding to the cover plate 4 and connected to the cover plate 4, the cover plate 4 is thickened by the second reinforcing plate 7, and the area of ​​the cover plate 4 used to connect the fourth longitudinal beam 80b is opposite to the second reinforcing plate 7, so that the fourth longitudinal beam 80b can be connected more firmly. Among them, the cover plate 4 can be the second cover plate 42. In addition, "the area of ​​the cover plate 4 used to connect the fourth longitudinal beam 80b is opposite to the second reinforcing plate 7" can mean that in the orthographic projection on the plane perpendicular to the up and down direction of the vehicle, the projection of the second reinforcing plate 7 and the projection of the area of ​​the cover plate 4 used to connect the fourth longitudinal beam 80b at least partially overlap.

[0090] In one scenario, the fourth longitudinal beam 80b and the second cover plate 42 may be connected by welding. In this case, the area of ​​the second cover plate 42 used to connect the fourth longitudinal beam 80b may refer to the area of ​​the second cover plate 42 used to connect the fourth longitudinal beam 80b by the welding structure. In addition, the second cover plate 42 and the second reinforcing plate 7 may be connected by welding.

[0091] In addition, when a reinforcing rib 23 is provided in the groove 25 corresponding to the second cover plate 42, the surface of the second reinforcing plate 7 facing away from the second cover plate 42 can also be in contact with the reinforcing rib 23 in the groove 25. At this time, the second reinforcing plate 7 and the reinforcing rib 23 in contact with it can be welded together; when no reinforcing rib 23 is provided in the groove 25 corresponding to the second cover plate 42, the surface of the second reinforcing plate 7 facing away from the second cover plate 42 can also be in contact with the bottom wall in the groove 25. At this time, the second reinforcing plate 7 and the bottom wall in the groove 25 can be welded together.

[0092] The embodiment of the utility model further provides a vehicle, the vehicle comprising the front engine compartment assembly 100 as described in any one of the above embodiments, wherein the front engine compartment assembly 100 is a part of the vehicle body structure. In addition, the vehicle further comprises a battery pack, wherein the battery pack is mounted on the vehicle body, and the quick-change connection structure of the battery pack is located in the inner concave structure 22.

[0093] In addition, during assembly, the first longitudinal beam 10, the first component 1 and the first mounting plate 40 can be welded together to form a small assembly one, the second longitudinal beam 20, the third component 3 and the second mounting plate 50 can be welded together to form a small assembly two, the second component 2, each cover plate 4, the first reinforcement plate 6 and the second reinforcement plate 7 can be welded together to form a small assembly three, and then the small assembly one, the small assembly two and the small assembly three can be welded together to form a small assembly four, and then the small assembly four can be assembled together with the central channel reinforcement plate 60, the third longitudinal beam 80a, the fourth longitudinal beam 80b, the floor cross beam 70 and the door sill beam, and finally the reinforcement beam 5 can be assembled to the second component 2 by bolts.

[0094] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A front wall lower cross beam, used to connect a first longitudinal beam and a second longitudinal beam of a vehicle, characterized in that: The front wall lower cross beam comprises a first component, a second component and a third component which are sequentially connected along the left-right direction of the vehicle; The first component is connected to the first longitudinal beam; The third component is connected to the second longitudinal beam; The bottom surface of the second component is provided with a concave structure, and the concave structure is used to accommodate the quick-change connection structure of the battery pack.

2. The lower cross beam of the front wall plate according to claim 1, characterized in that: The first member is connected to a first side of the second member with a first longitudinal beam; The third member is connected to the second longitudinal beam at the first side of the second member; The recessed structure has an opening located at a first side of the second component.

3. The lower cross beam of the front wall plate according to claim 2, characterized in that: The concave structure extends rearwardly to a side end of the second component facing away from the opening.

4. The lower cross beam of the front wall panel according to any one of claims 1 to 3, characterized in that: The lower cross beam of the front wall plate also includes a reinforcing beam, and the reinforcing beam is arranged in the concave structure; In the left-right direction of the vehicle, two ends of the reinforcing beam are respectively connected to the side walls of the concave structure.

5. The lower cross beam of the front wall plate according to claim 1, characterized in that: The second component is provided with a plurality of reinforcing ribs, wherein at least two of the reinforcing ribs are cross-arranged.

6. The lower cross beam of the front wall plate according to claim 5, characterized in that: The plurality of reinforcing ribs include a first reinforcing rib and a second reinforcing rib, the first reinforcing rib and the second reinforcing rib are cross-arranged, the first reinforcing rib extends along the left-right direction of the vehicle, and the second reinforcing rib extends along the front-rear direction of the vehicle.

7. The lower cross beam of the front wall plate according to claim 6, characterized in that: The plurality of reinforcing ribs also include a third reinforcing rib, wherein the third reinforcing rib is arranged crosswise with the first reinforcing rib, and the third reinforcing rib is arranged crosswise with the second reinforcing rib.

8. The lower cross beam of the front wall panel according to any one of claims 5 to 7, characterized in that: The top surface of the second component is provided with a groove, and the reinforcing rib is provided in the groove; The reinforcing rib located in the groove connects the bottom wall of the groove and the side wall of the groove.

9. The lower cross beam of the front wall plate according to claim 1, characterized in that: The top surface of the second component is provided with a groove, and the lower cross beam of the front wall plate also includes a cover plate, which is connected to the top surface of the second component and encloses the groove wall of the groove to form a cavity structure.

10. The lower cross beam of the front wall plate according to claim 1, characterized in that: A protruding structure is provided on the top surface of the second component, the protruding structure is opposite to the concave structure, and the protruding structure is used to connect to the central channel reinforcement plate.

11. The lower cross beam of the front wall panel according to claim 10, characterized in that: The top surface of the second component is provided with grooves, and the number of the grooves is multiple, a part of the grooves is provided between the protruding structure and the first component, and another part of the grooves is provided between the protruding structure and the third component.

12. A front cabin assembly, characterized in that: It comprises a first longitudinal beam, a second longitudinal beam and a lower cross beam of the front wall panel according to any one of claims 1 to 11; The rear end of the first longitudinal beam is connected to the front end of the first component, and the rear end of the second longitudinal beam is connected to the front end of the third component.

13. The front nacelle assembly according to claim 12, characterized in that: The front cabin assembly also includes a center channel reinforcement plate and a floor crossbeam; In the front-to-rear direction of the vehicle, the floor cross beam is located on a side of the front wall lower cross beam away from the first longitudinal beam; One end of the central channel reinforcement plate is connected to the second component; the other end of the central channel reinforcement plate is connected to the floor crossbeam.

14. The front nacelle assembly according to claim 13, characterized in that: The front cabin assembly further includes a third longitudinal beam, one end of which is connected to the second component, the other end of which is connected to the floor cross beam, and the third longitudinal beam is located between the central channel reinforcement plate and the first component; the third longitudinal beam is connected to the cover plate of the lower cross beam of the front wall plate and is located on the side of the cover plate away from the second component; and / or, The front cabin assembly also includes a fourth longitudinal beam, one end of which is connected to the second component, and the other end of the fourth longitudinal beam is connected to the floor cross beam, and the fourth longitudinal beam is located between the central channel reinforcement plate and the third component; the fourth longitudinal beam is connected to the cover plate of the lower cross beam of the front wall panel, and is located on the side of the cover plate away from the second component.

15. The front nacelle assembly according to claim 13, characterized in that: In the left-right direction of the vehicle, the central channel reinforcement plate includes a first connecting plate, a second connecting plate and a third connecting plate connected in sequence; The protruding structure of the lower cross beam of the front wall plate is located between the first connecting plate and the third connecting plate; The first connecting plate and the third connecting plate are both connected to the side surface of the protruding structure; The second connecting plate is connected to a surface of the protruding structure facing away from a bottom surface of the second component.

16. A vehicle, characterized in that: Comprising the front cabin assembly as described in any one of claims 12 to 15.

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