Front body device and new energy vehicle

Abstract

The application relates to a front vehicle body device and a new energy vehicle, and the front vehicle body device comprises two rocker beams, a front cross beam, two joint parts and a front floor; the two rocker beams respectively extend along a first direction; the front cross beam extends along a second direction; the two joint parts are respectively arranged between the two ends of the front cross beam and the rocker beams; the first end of the joint part extends along the second direction to be connected with the front cross beam; the second end of the joint part extends along a direction away from the front cross beam to be connected with the rocker beam; and the front floor is connected with the first mounting plate surface of the rocker beam and the second mounting plate surface on the joint part which is in the same plane as the first mounting plate surface along a third direction. In the application, the rocker beam, the front cross beam and the front floor are connected through the joint part, the front floor forms a flat sealing surface with the rocker beam and the front cross beam, the floor in the vehicle body can be integrated into the battery upper cover as a part of the battery, and the integration of the CTC battery and the vehicle body structure is realized.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle manufacturing technology, and in particular to front body assembly and new energy vehicles. Background Technology

[0002] With the development of new energy vehicle manufacturing technology, in order to further improve the range of new energy vehicles, battery research has evolved from small modules provided by traditional battery packs to CTP batteries (Cell to Pack, module-less batteries), and then to CTC (Cell to Chassis, batteries integrated into the chassis) batteries.

[0003] Currently used vehicle body structures typically employ either an all-aluminum or an all-steel body structure. However, regardless of whether it is an all-aluminum or all-steel body structure, the body structure and the battery pack are independent structural forms, making it difficult to apply CTC batteries as integrated cells with the vehicle body.

[0004] Therefore, how to integrate CTC batteries with the vehicle body structure so that the vehicle body structure becomes part of the CTC battery has become a new development direction in the field of vehicle body technology research. Summary of the Invention

[0005] Therefore, it is necessary to provide a front body device and a new energy vehicle to address the issue of how to integrate CTC batteries and vehicle body structure so that the vehicle body structure becomes part of the CTC battery.

[0006] As one aspect of the present invention, a front vehicle body device is provided, comprising:

[0007] Two door sill beams extend along a first direction, respectively; each door sill beam includes a door sill beam body and a first mounting plate surface extending on the door sill beam body along a second direction perpendicular to the first direction.

[0008] A front crossbeam extends along the second direction; two door sill beams are symmetrically arranged relative to the front crossbeam along the second direction.

[0009] Two connectors are respectively disposed at both ends of the front crossbeam and between the sill beam; a first end of each connector extends along the second direction near the front crossbeam to connect with the front crossbeam; a second end of each connector extends along the direction away from the front crossbeam to connect with the sill beam; each connector includes a second mounting surface on the same plane as the first mounting surface; and

[0010] The front floor is connected to the first mounting plate surface and the second mounting plate surface along a third direction, wherein the third direction is configured to be perpendicular to both the first direction and the second direction.

[0011] In one embodiment, the connector further includes:

[0012] A first connecting plate, the first end of which is connected to the second mounting plate surface, and the second end of which extends along the third direction; the first connecting plate is connected to the sill beam body along the second direction.

[0013] A second connecting plate, the first end of which is connected to the second mounting plate surface, and the second end of which extends along the third direction; the second connecting plate is connected to the front crossbeam along the second direction; and

[0014] A third connecting plate is arranged perpendicular to the third direction on one side of the second mounting plate, and the first end of the third connecting plate is connected to the second end of the second connecting plate, and the second end of the third connecting plate is connected to the second end of the first connecting plate.

[0015] In one embodiment, the connector further includes:

[0016] A first reinforcing plate is arranged perpendicularly to the third direction between the second mounting plate and the third connecting plate, and is connected to the first connecting plate and the second connecting plate.

[0017] In one embodiment, the connector further includes:

[0018] The second reinforcing plate is arranged between the second mounting plate and the third connecting plate along the third direction, and is connected to the second mounting plate and the third connecting plate.

[0019] In one embodiment, the length of the first connecting plate in the third direction is greater than the length of the second connecting plate in the third direction, and the third connecting plate has an arc-shaped structure.

[0020] In one embodiment, it further includes:

[0021] A front longitudinal beam, the first end of which is connected to the third end of the joint portion, wherein the third end is configured to be an end opposite to the second end of the joint portion along the first direction, and the second end of the front longitudinal beam extends away from the sill beam along the first direction.

[0022] In one embodiment, the sill beam body extends from a first surface of the front floor along a third direction; the two first mounting plate surfaces of the two sill beams are connected to the front floor along the third direction in a U-shaped structure.

[0023] In one embodiment, it further includes:

[0024] A front bulkhead, the first end of which is installed between the front crossbeam and the front floor and connected to the two joint portions; the second end of which extends arcuately from the second surface of the front floor along the third direction, wherein the second surface of the front floor is configured to be opposite to the first surface of the front floor; the first end and the second end of the front bulkhead are simultaneously connected to the front crossbeam to form a stepped cavity structure.

[0025] In one embodiment, it further includes:

[0026] The inner panel of the A-pillar has a first end connected to the sill beam along the third direction, and a second end extending from the second surface of the front floor along the third direction.

[0027] As another aspect of the present invention, a new energy vehicle is also provided, including: a front body device as described above.

[0028] In this invention, the sill beam, front crossbeam, and front floor are connected by a joint. At the same time, the front floor forms a flat sealing surface with the sill beam and the front crossbeam, so that the floor in the vehicle body can be integrated into the battery cover as part of the battery, realizing the integration of CTC battery and vehicle body structure. Attached Figure Description

[0029] Figure 1 A schematic diagram of the front vehicle body device in one embodiment of the present invention is shown;

[0030] Figure 2 A schematic diagram of the front vehicle body device from another angle is shown in one embodiment of the present invention;

[0031] Figure 3 It shows Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0032] Figure 4 It shows Figure 2 A magnified schematic diagram of part B.

[0033] Icon labels:

[0034] 10-Sill beam;

[0035] 11-Sill beam body;

[0036] 12 - First mounting plate surface;

[0037] 20 - Front crossbeam;

[0038] 30 - Connector section;

[0039] 31 - Second mounting plate surface;

[0040] 32-First connecting plate;

[0041] 33 - Second connecting plate;

[0042] 34 - Third connecting plate;

[0043] 35 - First reinforcing plate;

[0044] 36 - Second reinforcing plate;

[0045] 40 - Front longitudinal beam;

[0046] 50 - Front bulkhead;

[0047] 70-A column inner panel;

[0048] 80-Front floor. Detailed Implementation

[0049] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0055] With the development of new energy vehicle manufacturing technology, in order to further improve the driving range of new energy vehicles, battery research has evolved from small modules provided by traditional battery packs to CTP (Cell to Pack, module-less battery) batteries, and then to CTC (Cell to Chassis, battery integrated into the chassis) batteries, achieving continuous improvement in driving range. Below is a brief introduction to several representative battery types.

[0056] Traditional battery packs consist of modules made up of battery cells, which are then assembled into a battery pack and attached to the vehicle floor from the bottom. The height of the battery cover coincides with the position of the vehicle floor, thus replacing a portion of the floor. This traditional battery pack integration method allows for individual replacement of battery modules, resulting in low maintenance costs and high convenience. However, due to the safety gaps between the battery module housings, the overall weight is relatively high, and space utilization is low.

[0057] The subsequently proposed CTP (Cell to Pack) battery integration method eliminates the module structure, directly assembling the battery pack from the cells, and then integrating the battery pack onto the vehicle floor as part of the overall vehicle structure. While the CTP battery integration method reduces the spacing between modules and increases the number of cells, the battery pack needs to bear the load as part of the structural component, which places higher demands on the battery's structural design.

[0058] The currently proposed CTC (Cell to Chassis) technology directly integrates the battery cells into the frame of the vehicle floor, using the upper and lower panels of the floor as the battery casing. It represents a further integration of the CTP (Cell to Chassis) battery integration method, completely replacing the battery casing and cover with the upper and lower panels of the vehicle floor, achieving an integrated design with the vehicle floor and chassis, fundamentally changing the way batteries are installed. In CTC technology, the battery cell not only functions as an energy storage and release unit but also as an integral part of the overall vehicle structure.

[0059] In CTC technology, the floor panel and the battery pack upper shell can be integrated into one unit, essentially replacing part of the floor structure. Alternatively, the floor panel and the battery pack upper shell can be integrated into the vehicle body, effectively dividing the battery pack structure into two parts: the upper shell and the battery body. Regardless of whether the battery is integrated into the vehicle body or vice versa, the battery cover needs to be designed with a flat surface to achieve an effective seal with the vehicle body.

[0060] See Figures 1 to 4 , Figure 1 A schematic diagram of the front vehicle body device in one embodiment of the present invention is shown; Figure 2 A schematic diagram of the front vehicle body device from another angle is shown in one embodiment of the present invention; Figure 3 It shows Figure 1 A magnified schematic diagram of the structure of part A in the diagram; Figure 4 It shows Figure 2 A partially enlarged structural diagram of component B. Before introducing the embodiments of the present invention, the directions involved in the present invention will be explained. The first direction is the front-rear direction of the front body assembly. The second direction is the left-right direction of the front body assembly. The third direction is the up-down direction of the front body assembly.

[0061] An embodiment of the present invention provides a front vehicle body assembly, comprising: two sill beams 10, a front crossbeam 20, two connector portions 30, and a front floor 80. The two sill beams 10 extend along a first direction; each sill beam 10 includes a sill beam body 11 and a first mounting surface 12 extending along a second direction on the sill beam body 11. The front crossbeam 20 extends along a second direction; the two sill beams 10 are symmetrically arranged relative to the front crossbeam 20 along the second direction. The two connector portions 30 are respectively disposed between the two ends of the front crossbeam 20 and the sill beams 10; a first end of each connector portion 30 extends along the second direction near the front crossbeam 20 to connect with the front crossbeam 20; a second end of each connector portion 30 extends along a direction away from the front crossbeam 20 to connect with the corresponding sill beam 10; each connector portion 30 includes a second mounting surface 31 coplanar with the first mounting surface 12. The front floor 80 is connected to the first mounting surface 12 and the second mounting surface 31 along a third direction, wherein the third direction is configured to be perpendicular to both the first and second directions.

[0062] Specifically, the front floor 80 is connected to the first mounting plate 12 of the sill beam 10 and the second mounting plate 31 of the joint 30 by a self-piercing riveting process (SPR).

[0063] Specifically, the first mounting plate 12 can be oriented towards the interior of the front vehicle body. That is, if the sill beam 10 is positioned on the left side, the first mounting plate 12 extends to the right along the second direction on the sill beam body 11; if the sill beam 10 is positioned on the right side, the first mounting plate 12 extends to the left along the second direction on the sill beam body 11. Since the joint portion 30 is not a long strip structure, the arrangement of the second mounting plate 31 is not specifically limited as long as it can form a frame structure with the first mounting plate 12 on a smooth surface, so that the front floor 80 can be installed on this frame structure.

[0064] Specifically, taking the front floor 80 as a reference, one part of the sill beam body 11 is located above the front floor 80, and the other part of the sill beam body 11 is located below the front floor 80. The joint 30 can be connected to the sill beam body 11 located above the front floor 80 and the sill beam body 11 located below the front floor 80 by means of hot-melt self-tapping screws (FDS) or bolts. A through hole can be provided on the outer side of the sill at the corresponding bolt connection position to reserve space to ensure that tools can be operated.

[0065] In one embodiment of the present invention, the connector 30 further includes a first connecting plate 32, a second connecting plate 33, and a third connecting plate 34.

[0066] The first end of the first connecting plate 32 is connected to the second mounting plate surface 31, and the second end of the first connecting plate 32 extends along a third direction; the first connecting plate 32 is connected to the sill beam body 11 along a second direction. The first end of the second connecting plate 33 is connected to the second mounting plate surface 31, and the second end of the second connecting plate 33 extends along a third direction; the second connecting plate 33 is connected to the front crossbeam 20 along a second direction. The third connecting plate 34 is arranged perpendicular to the third direction on one side of the second mounting plate surface, and the first end of the third connecting plate 34 is connected to the second end of the second connecting plate 33, and the second end of the third connecting plate 34 is connected to the second end of the first connecting plate 32.

[0067] Furthermore, the second connecting plate 33 can wrap around the side wall of the front crossbeam 20 and cover the outside of the front crossbeam 20. The second connecting plate 33 and the front crossbeam 20 can be connected in the horizontal direction. The specific direction can be the second direction, the first direction, or other angles suitable for assembly.

[0068] Furthermore, the second end of the first connecting plate 32 is flush with the upper end of the sill beam body 11, and a matching gap of 3mm is generally maintained between the first connecting plate 32 and the sill beam body 11, mainly connected by hot-melt self-tapping screws (FDS) or bolts. The second end of the second connecting plate 33 is flush with the upper end of the front crossbeam 20, and a matching gap of 3mm is generally maintained between the second connecting plate 33 and the front crossbeam 20. The two ends of the third connecting plate 34 are flush with the upper ends of the front crossbeam 20 and the sill beam body 11, respectively. Since there is a height difference between the upper ends of the front crossbeam 20 and the upper ends of the sill beam body 11, the third connecting plate 34 needs to ensure a smooth transition planar structure, or it can be designed with a corresponding curvature to adapt to stress requirements.

[0069] The second mounting plate 31, the first connecting plate 32, the second connecting plate 33 and the third connecting plate 34 form a cavity structure, and this cavity structure is matched and connected with the front floor 80, the front crossbeam 20 and the sill beam 10 (or the sill beam body 11). The connection method can be self-piercing riveting (SPR), hot-melt self-tapping screw (FDS) or bolts, etc., and glue can also be filled in the gaps at the matching points along the third direction to achieve a sealed connection.

[0070] In one embodiment of the present invention, the connector portion 30 further includes a first reinforcing plate 35.

[0071] The first reinforcing plate 35 is arranged perpendicularly to the third direction between the second mounting plate surface 31 and the third connecting plate 34, and is connected to the first connecting plate 32 and the second connecting plate 33. In this embodiment, the first reinforcing plate 35 is horizontally arranged within the cavity structure formed by the second mounting plate surface 31, the first connecting plate 32, the second connecting plate 33 and the third connecting plate 34, and plays a role in force transmission.

[0072] In one embodiment of the present invention, the connector 30 further includes a second reinforcing plate 36.

[0073] The second reinforcing plate 36 is arranged along a third direction between the second mounting plate surface 31 and the third connecting plate 34, and is connected to the second mounting plate surface 31 and the third connecting plate 34. In this embodiment, the second reinforcing plate 36 is vertically arranged within the cavity structure formed by the second mounting plate surface 31, the first connecting plate 32, the second connecting plate 33 and the third connecting plate 34 to improve the supporting strength of the cavity structure.

[0074] In one embodiment of the present invention, a front longitudinal beam 40 is also included.

[0075] The first end of the front longitudinal beam 40 is connected to the third end of the joint portion 30, wherein the third end of the joint portion 30 is configured to be opposite to the second end of the joint portion 30 along a first direction, and the second end of the front longitudinal beam 40 extends away from the sill beam 10 along the first direction. It is understood that in this embodiment, the first end of the front longitudinal beam 40 is connected to the third end of the joint portion 30 from the front, and the sill beam 10 is connected to the second end of the joint portion 30 from the rear. In this embodiment, the connection of the third end of the joint portion 30 to the front longitudinal beam 40 serves as the rear end of the front longitudinal beam 40, and the various components of the front vehicle body are integrated using the joint portion, achieving an integrated design of the front vehicle body.

[0076] In one embodiment of the present invention, the sill beam body 11 extends from the first surface of the front floor 80 along a third direction; the two first mounting plate surfaces 12 of the two sill beams 10 are connected to the front floor 80 along a third direction in a U-shaped structure. The U-shaped structure here is understood as a bowl-shaped structure. It should be noted that the first surface of the front floor 80 involved in this embodiment can be used as the bottom surface of the front floor, and the opening direction of the U-shaped structure faces the bottom of the front vehicle body device.

[0077] As an optional embodiment, it also includes: a front bulkhead 50. The first end of the front bulkhead 50 is mounted between the front crossbeam 20 and the front floor 80 and is connected to two joint portions 30; the second end of the front bulkhead 50 extends arcuately from the second surface of the front floor 80 in a third direction, wherein the second surface of the front floor 80 is configured to be opposite to the first surface of the front floor 80; the front bulkhead 50 is integrally fastened to the stepped front crossbeam 20, forming a stepped cavity structure between the front bulkhead 50 and the front crossbeam 20.

[0078] In this embodiment, the front bulkhead 50 can be integrally formed.

[0079] In this embodiment, the front bulkhead structure is integrated into the front vehicle body using a joint, thus achieving an integrated design of the front vehicle body.

[0080] As an optional embodiment, it also includes an A-pillar inner panel 70. A first end of the A-pillar inner panel 70 is connected to the sill beam 10 along a third direction, and a second end of the A-pillar inner panel 70 extends from the second surface of the front floor 80 along a third direction. It should be further noted that the second end of the A-pillar inner panel 70 extends upward from the top surface of the front floor 80. In this embodiment, the A-pillar inner panel 70 is mounted on the sill beam 10 to achieve integration of the A-pillar inner panel 70 into the front vehicle body, realizing an integrated design of the front vehicle body.

[0081] In another embodiment of the present invention, a new energy vehicle is also provided, including: a front body assembly as described above, wherein the front floor, sill beam and front crossbeam form a flat sealing surface, and the battery cover is integrated with the front floor, so that the front floor in the front body can be used as part of the battery, thereby realizing the integration of CTC battery and body structure.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0083] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A front vehicle body device, characterized in that, include: Two threshold beams (10) extend along a first direction respectively; the threshold beam (10) includes a threshold beam body (11) and a first mounting plate surface (12) extending on the threshold beam body (11) along a second direction perpendicular to the first direction. A front crossbeam (20) extends along the second direction; two door sill beams (10) are symmetrically arranged relative to the front crossbeam (20) along the second direction; Two connectors (30) are respectively disposed between the two ends of the front crossbeam (20) and the sill beam (10); the first end of the connector (30) extends along the second direction close to the front crossbeam (20) to connect with the front crossbeam (20); the second end of the connector (30) extends along the direction away from the front crossbeam (20) to connect with the sill beam (10); the connector (30) includes a second mounting plate surface (31) on the same plane as the first mounting plate surface (12); and The front floor (80) is connected to the first mounting plate surface (12) and the second mounting plate surface (31) along a third direction, wherein the third direction is configured to be perpendicular to both the first direction and the second direction. The connector (30) also includes: A first connecting plate (32) is connected at its first end to the second mounting plate surface (31), and at its second end extends along the third direction; the first connecting plate (32) is connected to the sill beam body (11) along the second direction; A second connecting plate (33), the first end of which is connected to the second mounting plate surface (31), and the second end of which extends along the third direction; the second connecting plate (33) is connected to the front crossbeam (20) along the second direction; and The third connecting plate (34) is arranged perpendicular to the third direction on one side of the second mounting plate (31), and the first end of the third connecting plate (34) is connected to the second end of the second connecting plate (33), and the second end of the third connecting plate (34) is connected to the second end of the first connecting plate (32).

2. The front vehicle body device according to claim 1, characterized in that, The connector (30) also includes: The first reinforcing plate (35) is arranged perpendicularly to the third direction between the second mounting plate (31) and the third connecting plate (34), and is connected to the first connecting plate (32) and the second connecting plate (33).

3. The front vehicle body device according to claim 1, characterized in that, The connector (30) also includes: The second reinforcing plate (36) is arranged between the second mounting plate surface (31) and the third connecting plate (34) along the third direction, and is connected to the second mounting plate surface (31) and the third connecting plate (34).

4. The front vehicle body device according to claim 1, characterized in that, The length of the first connecting plate (32) in the third direction is greater than the length of the second connecting plate (33) in the third direction, and the third connecting plate (34) has an arc-shaped structure.

5. The front vehicle body device according to claim 1, characterized in that, Also includes: A front longitudinal beam (40), the first end of which is connected to the third end of the joint portion (30), wherein the third end is configured to be opposite to the second end of the joint portion (30) along the first direction, and the second end of the front longitudinal beam (40) extends away from the sill beam (10) along the first direction.

6. The front body assembly according to claim 1, characterized in that, The sill beam body (11) extends from the first surface of the front floor (80) along the third direction; the two first mounting plate surfaces (12) of the two sill beams (10) are connected to the front floor (80) along the third direction in a U-shaped structure.

7. The front vehicle body device according to claim 6, characterized in that, Also includes: A front bulkhead (50) has a first end installed between the front crossbeam (20) and the front floor (80) and connected to the two joints (30); the second end of the front bulkhead (50) extends arcuately from the second surface of the front floor (80) along the third direction, wherein the second surface of the front floor (80) is configured to be opposite to the first surface of the front floor (80); the first end and the second end of the front bulkhead (50) are simultaneously connected to the front crossbeam (20) to form a stepped cavity structure.

8. The front body assembly according to claim 7, characterized in that, Also includes: The inner panel of the A-pillar (70) has a first end connected to the threshold beam (10) along the third direction, and a second end of the inner panel of the A-pillar (70) extends from the second surface of the front floor (80) along the third direction.

9. A new energy vehicle, characterized in that, include: The front body assembly as described in any one of claims 1 to 8.

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