Front floor system and vehicle

Abstract

A front floor system and a vehicle. The front floor system comprises: a sill beam (1), the sill beam (1) comprising a first sill longitudinal beam (11) and a second sill longitudinal beam (12) parallel to each other; a battery pack (2), the battery pack (2) being located between the first sill longitudinal beam (11) and the second sill longitudinal beam (12), one side of the battery pack (2) being fixed to the first sill longitudinal beam (11), and the battery pack (2) being positioned closer to the first sill longitudinal beam (11) than the second sill longitudinal beam (12); and a front floor connecting beam (3), one side of the front floor connecting beam (3) being connected to the side of the battery pack (2) away from the first sill longitudinal beam (11), and the other side of the front floor connecting beam (3) being connected to the second sill longitudinal beam (12). The battery pack being positioned closer to the first sill longitudinal beam than the second sill longitudinal beam enables one side of the battery pack to be directly connected to the first sill longitudinal beam, and enables the opposite side to be connected to the second sill longitudinal beam via the front floor connecting beam, thereby reducing the arrangement of battery supporting structures. Moreover, for different vehicle models, the same battery pack can be mounted on vehicles of different models by adjusting the structure of the front floor connecting beam.

Description

A front floor system and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202411914548.7, filed on December 24, 2024, entitled “A Front Floor System and Vehicle”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electric vehicle manufacturing technology, specifically to a front floor system and vehicle. Background Technology

[0003] Currently, electric vehicles in the new energy vehicle sector typically utilize battery packs to power the entire vehicle. Based on the matching relationship between the battery pack and the body-in-white, the size of the battery pack and the structure of the body-in-white are mutually constrained. In related technologies, the battery pack is usually installed in the middle of the frame. During installation, multiple battery support structures need to be added on both sides of the battery pack near the door sill beam, which increases the overall weight and cost of the vehicle. Furthermore, when the bottom structure of different vehicle models changes, it is usually necessary to develop a battery pack that corresponds to the bottom structure of the vehicle, and the development of the battery pack also requires significant costs. Summary of the Invention

[0004] This application provides a front floor system and vehicle that can solve the problem in the related art where multiple battery support structures need to be added on both sides of the battery pack near the door sill beam when the battery pack is installed in the middle of the frame, which increases the overall weight and cost of the vehicle. Furthermore, the development of the battery pack also requires significant technical costs when the bottom structure of different vehicle models changes.

[0005] In a first aspect, embodiments of this application provide a front floor system, comprising: a sill beam, the sill beam including a first sill beam and a second sill beam parallel to each other; a battery pack, the battery pack being located between the first sill beam and the second sill beam, with one side of the battery pack fixed to the first sill beam and the battery pack being biased towards the first sill beam relative to the second sill beam; and a front floor connecting beam, one side of the front floor connecting beam being connected to the side of the battery pack away from the first sill beam, and the other side of the front floor connecting beam being connected to the second sill beam.

[0006] In conjunction with the first aspect, in one embodiment, the front floor connecting beam includes: a first connecting section connected to the second sill beam; and a recessed section, one side of which is connected to the first connecting section and the other side of which is connected to a second connecting section, the second connecting section being connected to the battery pack.

[0007] In conjunction with the first aspect, in one embodiment, the recessed section is made of aluminum material, and the upper part of the recessed section forms an exhaust pipe receiving cavity.

[0008] In conjunction with the first aspect, in one embodiment, the recessed section includes: a vertical section connected to the first connecting section, and a bottom section connected to the side of the vertical section away from the first connecting section; and a ramp section fixed to the side of the bottom section away from the vertical section, the ramp section extending obliquely from the connection with the bottom section and connected to the second connecting section, wherein the vertical section, the ramp section, and the bottom section together form the exhaust pipe receiving cavity.

[0009] In conjunction with the first aspect, in one embodiment, the thickness of the first connecting segment is less than the thickness of the second connecting segment.

[0010] In conjunction with the first aspect, in one embodiment, the second connecting segment is connected to the battery pack via a bidirectional clamping mechanism.

[0011] In conjunction with the first aspect, in one embodiment, the bidirectional tightening mechanism includes a top tightening member, which is spaced apart along the extension direction of the second connecting segment and penetrates the second connecting segment and the battery pack respectively along a first direction; the bidirectional tightening mechanism also includes a bottom tightening member, which is also spaced apart along the extension direction of the second connecting segment, and the top tightening member and the bottom tightening member are spaced apart, with the bottom tightening member penetrating the battery pack and the second connecting segment respectively along a second direction, the second direction being opposite to the first direction.

[0012] In conjunction with the first aspect, in one embodiment, the first connecting segment, the second connecting segment, and the recessed segment each have a mounting cavity, and a plurality of reinforcing ribs are fixed in the mounting cavity, the plurality of reinforcing ribs dividing the mounting cavity into a plurality of reinforcing cavities.

[0013] In conjunction with the first aspect, in one embodiment, both the top fastening member and the bottom fastening member penetrate a portion of the reinforcing rib of the second connecting segment along an extension direction perpendicular to the second connecting segment.

[0014] Secondly, embodiments of this application provide a vehicle that includes the front floor system as described above.

[0015] The beneficial effects of the technical solutions provided in this application include:

[0016] By mounting the battery pack closer to the first sill longitudinal beam relative to the second sill longitudinal beam, one side of the battery pack can be directly connected to the first sill longitudinal beam, while the opposite side is connected to the second sill longitudinal beam via the front floor connecting beam. This reduces the arrangement of battery support structures, and the same battery pack can be installed in different vehicle models by adjusting the structure of the front floor connecting beam. This solves the technical problems in related technologies where multiple battery support structures are required when the battery pack is installed in the middle of the frame, and where the development of the battery pack requires significant costs when the bottom structure of different vehicle models changes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a top view of the front floor system provided in an embodiment of this application;

[0019] Figure 2 is a cross-sectional view of AA in Figure 1;

[0020] Figure 3 is a top view of the connection between the battery pack and the front floor connecting beam provided in an embodiment of this application.

[0021] Figure 4 is a cross-sectional view of BB in Figure 3;

[0022] Figure 5 is a three-dimensional structural diagram of the connection between the battery pack and the front floor connecting beam provided in an embodiment of this application;

[0023] Figure 6 is a side view of the front floor connecting beam provided in an embodiment of this application.

[0024] In the diagram: 1. Sill beam; 11. First sill longitudinal beam; 12. Second sill longitudinal beam; 2. Battery pack; 3. Front floor connecting beam; 31. First connecting section; 32. Recessed section; 321. Vertical section; 322. Bottom section; 323. Sloping section; 33. Second connecting section; 34. Exhaust pipe receiving cavity; 35. Mounting cavity; 36. Reinforcing rib; 41. Top fastener; 42. Bottom fastener; 5. Exhaust pipe. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0026] This application provides a front floor system that solves the problem in related technologies where multiple battery support structures are required on both sides of the battery pack near the sill beam when the battery pack is installed in the middle of the vehicle frame, which increases the overall weight and cost of the vehicle. Furthermore, the development of the battery pack also requires significant technical costs when the bottom structure of different vehicle models changes.

[0027] Referring to Figure 1, an embodiment of this application provides a front floor system, which may include: a sill beam 1, the sill beam 1 including a first sill beam 11 and a second sill beam 12 that are parallel to each other; a battery pack 2, the battery pack 2 being located between the first sill beam 11 and the second sill beam 12, with one side of the battery pack 2 fixed to the first sill beam 11, and the battery pack 2 being biased towards the first sill beam 11 relative to the second sill beam 12; and a front floor connecting beam 3, one side of the front floor connecting beam 3 being connected to the side of the battery pack 2 away from the first sill beam 11, and the other side of the front floor connecting beam 3 being connected to the second sill beam 12.

[0028] In this embodiment, the battery pack 2 is installed closer to the first sill beam 11 than the second sill beam 12. This allows one side of the battery pack 2 to be directly connected to the first sill beam 11, while the opposite side is connected to the second sill beam 12 via the front floor connecting beam 3. In other words, one side of the battery pack 2 is directly fixed to the first sill beam 11 via its frame, while the other side is fixed to the second sill beam 12 via the front floor beam, which serves as a battery support structure. This allows for installation of the battery pack 2 in a predetermined position with only one battery support structure on each side, reducing the need for additional battery support structures and lowering costs and overall vehicle weight. Furthermore, in this embodiment, the battery pack 2 is positioned offset along the vehicle's Y-axis (vehicle width direction), allowing space to be reserved on the other side. This facilitates the integration of fragmented spaces, providing a more complete and structurally sound layout for the entire vehicle. Furthermore, by adjusting the structure of the front floor connecting beam 3, the same battery pack 2 can be installed in vehicles of different models. In addition, in vehicles of the same model, the front floor connecting beam 3 can be used to install battery packs 2 of different sizes or models, which enhances the flexibility and adaptability of the vehicle and the battery pack 2. This solves the technical problem that in related technologies, when the battery pack 2 is installed in the middle of the frame, multiple battery support structures need to be added, and when the bottom structure of different vehicle models changes, the development of the battery pack 2 also requires a large cost.

[0029] Referring to Figures 3 and 4, in some optional embodiments, the front floor connecting beam 3 may include: a first connecting segment 31 connected to the second sill beam 12; and a recessed segment 32, one side of which is connected to the first connecting segment 31, and the other side of which is connected to a second connecting segment 33, which is connected to the battery pack 2. In this embodiment, the first connecting segment 31 may be located below the second sill beam 12, and the two segments may support each other; the second connecting segment 33 may be located above the battery pack 2 frame to which it is connected. The first connecting segment 31 and the second sill beam 12, as well as the second connecting segment 33 and the battery pack 2 frame, may all be connected by bolts. In this embodiment, the recessed section 32 can enhance the overall strength of the front floor connecting beam 3. By setting the recessed section 32, the cross-sectional shape of the front floor connecting beam 3 can be changed, thereby enhancing the overall strength of the front floor connecting beam 3 and enabling the front floor connecting beam 3 to better resist external loads and deformations, thus improving the overall load-bearing capacity and deformation resistance of the front floor connecting beam 3.

[0030] In some optional embodiments, the recessed section 32 is made of aluminum, and an exhaust pipe receiving cavity 34 is formed above the recessed section 32. The exhaust pipe receiving cavity 34 formed by the recessed section 32 can extend along the length of the vehicle, and the vehicle's exhaust pipe 5 is housed in the exhaust pipe receiving cavity 34, which can make reasonable use of the vehicle's bottom space and enhance the overall structural design and space utilization efficiency of the vehicle. In related technologies, because the temperature at the exhaust pipe 5 is relatively high, in order to isolate or reduce the heat damage caused by the high temperature of the exhaust pipe 5 to the body-in-white and battery pack 2, heat insulation cotton is wrapped around the exhaust pipe 5. This occupies a lot of vehicle bottom space and also increases manufacturing costs. In this embodiment, by providing an exhaust pipe receiving cavity 34 and using aluminum for the recessed section 32, the recessed section 32 can be made into a U-shaped beam structure, so that the recessed section 32 wraps around the exhaust pipe 5. That is, the exhaust pipe 5 is placed within the exhaust pipe receiving cavity 34 formed by the recessed section 32, saving space at the bottom of the vehicle. Furthermore, the material properties of the recessed section 32 isolate or reduce the heat damage to the body-in-white and battery pack 2 caused by the high temperature around the exhaust pipe 5. Further, using aluminum for the recessed section 32 avoids corrosion caused by heat damage, indirectly extending the service life of the front floor connecting beam 3. Preferably, in this embodiment, the first connecting section 31, the second connecting section 33, and the recessed section 32 can be extruded aluminum beam structures to achieve the connection between the battery pack 2 and the vehicle body. In some other embodiments, the first connecting section 31, the second connecting section 33, and the recessed section 32 can also be made of stainless steel or other materials. Stainless steel itself has excellent corrosion resistance and heat resistance, and can withstand high temperature and corrosive environments. Therefore, it is also suitable for manufacturing high-temperature components such as automotive exhaust pipes, and can also be used in the front floor connecting beam 3 of this application. At the same time, stainless steel also has good mechanical properties, which can meet the overall strength and durability requirements of the front floor connecting beam 3.

[0031] In this embodiment, the cross-section of the exhaust pipe accommodating cavity 34 can be U-shaped, with a width of 80mm-120mm and a height of 50mm-80mm. For example, its width can be 80mm, 90mm, 100mm, 110mm or 120mm, and its height can be 50mm, 60mm, 70mm or 80mm.

[0032] In this embodiment of the application, the wall thickness of the recessed section 32 can be 2mm-4mm. For example, the wall thickness of the recessed section 32 can be 2mm, 2.5mm, 3mm, 3.5mm or 4mm, etc.

[0033] Referring to Figure 2, in some optional embodiments, the recessed section 32 may include: a vertical section 321 connected to the first connecting section 31, and a bottom section 322 connected to the side of the vertical section 321 away from the first connecting section 31; and a ramp section 323 fixed to the side of the bottom section 322 away from the vertical section 321, and the ramp section 323 extending obliquely from the connection with the bottom section 322 and connected to the second connecting section 33. The vertical section 321, the ramp section 323, and the bottom section 322 together form the exhaust pipe receiving cavity 34. In this embodiment, the cross-section of the vertical segment 321 can extend along the Z-direction (height direction) of the vehicle, so that the exhaust pipe accommodating cavity 34 formed by the vertical segment 321, the ramp segment 323, and the bottom segment 322 has a larger accommodating space. In some other embodiments, the vertical segment 321 can also have a certain angle of inclination. Preferably, the vertical segment 321 and the second sill longitudinal beam 12 are spaced apart along the Y-direction of the vehicle. The cross-section of the bottom segment 322 can extend along the Y-direction (lateral direction) of the vehicle. In this case, the vertical segment 321 and the bottom segment 322 are connected by a slightly truncated inclined segment. Compared to forming a right angle between the vertical segment 321 and the bottom segment 322, the inclined segment can enhance the connection strength at the connection between the vertical segment 321 and the bottom segment 322, and further enhance the support performance of the front floor connecting beam 3. It should be understood that the cross-section of the ramp section 323 is configured to extend inclinedly from the bottom section 322 toward the side closer to the second connecting section 33, and the inclination direction of the ramp section 323 is configured to incline toward the side closer to the vertical section 321. In this embodiment, the ramp section 323 can serve as a slope transition structure. The ramp section 323 can better transmit the vibration generated by the battery pack 2 and effectively disperse the stress from the battery pack 2 or other components, reducing the problem of structural damage caused by stress concentration. Preferably, when the front floor connecting beam 3 needs to be used in different vehicle models, by adjusting the specific dimensions and shapes of the vertical section 321, the ramp section 323, and the bottom section 322 respectively, the front floor connecting beam 3 can flexibly adapt to the needs of different vehicle models and the battery pack 2, thereby enabling the front floor connecting beam 3 to be more widely used in different types of vehicles, improving the versatility and market competitiveness of the front floor connecting beam 3. Furthermore, compared to the need to develop battery packs 2 adapted to the structure of different vehicle models in related technologies, simply adjusting the specific dimensions and shapes of the vertical section 321, the ramp section 323, and the bottom section 322 can reduce design and production time and lower vehicle production costs.

[0034] In some embodiments, the angle between the ramp section 323 and the bottom section 322 can be 120°-150°. For example, the angle between the ramp section 323 and the bottom section 322 can be 120°, 130°, 140° or 150°, etc.

[0035] In some embodiments, the vertical segment 321 and the bottom segment 322 can be connected by a transition inclined segment, and the angle between the transition inclined segment and the bottom segment 322 can be 135°-150°. For example, the angle between the transition inclined segment and the bottom segment 322 can be 135°, 140°, 145° or 150°, etc.

[0036] Preferably, the thickness of the first connecting segment 31 is less than the thickness of the second connecting segment 33. When the front floor connecting beam 3 is installed in the vehicle, the bottom surface of the first connecting segment 31 can be higher than the bottom surface of the second connecting segment 33. Specifically, the second connecting segment 33 is connected to the frame of the battery pack 2, that is, the second connecting segment 33 directly mounts the battery pack 2, and it bears a large load. By setting the thickness of the second connecting segment 33 to be thicker, the mounting cavity 35 and the reinforcing cavity formed by the second connecting segment 33 can be larger, so that the mounting cavity 35 and the reinforcing cavity of the second connecting segment 33 can resist deformation. On the other hand, the first connecting segment 31 is connected to the second sill longitudinal beam 12, and the load borne by the first connecting segment 31 is smaller. Therefore, the thickness of the first connecting segment 31 can be set to be smaller, so that its load-bearing capacity can be met even with a smaller mounting cavity 35 and reinforcing cavity, thereby achieving the purpose of overall weight reduction and reducing production costs of the front floor connecting beam 3. In this embodiment of the application, the cost of vehicle production and manufacturing, the overall weight of the vehicle and the overall performance of the vehicle are comprehensively evaluated, and the thickness of the first connecting segment 31 is set to be less than the thickness of the second connecting segment 33.

[0037] In this embodiment of the application, the thickness of the first connecting segment 31 can be 2mm-3mm, and the thickness of the second connecting segment 33 can be 4mm-6mm. For example, the thickness of the first connecting segment 31 can be 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, or 3mm, etc., and the thickness of the second connecting segment 33 can be 4mm, 4.5mm, 5mm, 5.5mm, or 6mm, etc.

[0038] Furthermore, the bottom surface of the first connecting segment 31 can be 3mm-8mm higher than the bottom surface of the second connecting segment 33. For example, the bottom surface of the first connecting segment 31 can be 3mm, 4mm, 5mm, 6mm, 7mm or 8mm higher than the bottom surface of the second connecting segment 33.

[0039] In some optional embodiments, the second connecting segment 33 is connected to the battery pack 2 via a bidirectional fastening mechanism. In this embodiment, the second connecting segment 33 and the frame of the battery pack 2 can be fastened together along the vehicle's height direction using the bidirectional fastening mechanism, fastening from top to bottom and from bottom to top respectively. Compared to unidirectional fastening, bidirectional fastening is more resistant to external impacts and vibrations, thereby enhancing the connection's strength. This improves the stability and robustness of the connection between the second connecting segment 33 and the battery pack 2, effectively reducing the possibility of loosening due to vibration or impact during vehicle operation. Furthermore, the bidirectional fastening mechanism limits the connection strength between the second connecting segment 33 and the battery pack 2. It also effectively restricts relative movement between the second connecting segment 33 and the battery pack 2, protecting the battery pack 2 and its internal components from damage caused by movement. In this embodiment, by setting a bidirectional tightening mechanism to connect the second connecting segment 33 and the battery pack 2, the battery pack 2 can be less likely to detach or be damaged due to vibration or impact during vehicle operation, thereby improving the overall vehicle safety. Furthermore, because the connection between the second connecting segment 33 and the battery pack 2 is relatively secure, it can also effectively reduce noise caused by loosening between the second connecting segment 33 and the battery pack 2 during vehicle operation, thus improving passenger comfort. Further, since the bidirectional tightening mechanism improves the firmness and stability of the connection between the second connecting segment 33 and the battery pack 2, it reduces the maintenance needs caused by loosening between the second connecting segment 33 and the battery pack 2, thus lowering maintenance costs.

[0040] Referring to Figures 5 and 6, in some optional embodiments, the bidirectional fastening mechanism includes a top fastening member 41, which is spaced apart along the extension direction of the second connecting segment 33 and penetrates the second connecting segment 33 and the battery pack 2 respectively in a first direction. The bidirectional fastening mechanism also includes a bottom fastening member 42, which is also spaced apart along the extension direction of the second connecting segment 33. The top fastening member 41 and the bottom fastening member 42 are spaced apart, and the bottom fastening member 42 penetrates the battery pack 2 and the second connecting segment 33 respectively in a second direction, which is opposite to the first direction. In this embodiment, the top fastening member 41 extends from top to bottom into the frame of the second connecting segment 33 and the battery pack 2 along the height direction of the vehicle, while the bottom fastening member 42 extends from bottom to top into the frame of the battery pack 2 and the second connecting segment 33, together achieving the connection between the second connecting segment 33 and the battery pack 2. Specifically, during vehicle assembly, the second connecting section 33 can be connected to the battery pack 2 via top fastening members 41 to form a battery pack assembly. Two top fastening members 41 can be used, installed at both ends of the second connecting section 33 respectively. This allows for connection between the second connecting section 33 and the battery pack 2 while saving materials. In some other embodiments, the number of top fastening members 41 can be different, and they can be installed at the ends or other locations in the middle of the second connecting section 33. Normally, when installing the battery pack 2, the vehicle body needs to be lifted to a certain height before installation. In this embodiment, the battery pack 2 assembly can be lifted to a preset position below the vehicle body, and then the bottom fastening members 42 are driven in from bottom to top to connect the battery pack 2 assembly to the vehicle body. Preferably, the first connecting section 31 and the second sill longitudinal beam 12 are also fastened using the bottom fastening members 42 in this step. The assembly in this embodiment is simple and achievable, and the battery pack 2 and the front floor connecting beam 3 are bidirectionally fastened, forming a stable and reliable structure, ensuring the strength and durability of the connection point. In this embodiment, both the top fastening member 41 and the bottom fastening member 42 can be configured as fixing nuts for the battery pack 2. In some other embodiments, the top fastening member 41 and the bottom fastening member 42 can also be other connection structures. Preferably, before the tightening operation, pre-drilled holes can be provided at both the second connecting section 33 and the frame of the battery pack 2. The top fastening member 41 and the bottom fastening member 42 are fastened to the second connecting section 33 and the battery pack 2 by passing through the pre-drilled holes. In some other embodiments, the second connecting section 33 and the battery pack 2 can also be connected by other connection methods, such as using rivets to rivet the second connecting section 33 to the metal frame of the battery pack 2, or designing a snap-fit ​​structure on the second connecting section 33 and the battery pack 2 to achieve connection through snap-fit, etc.

[0041] In some optional embodiments, the first connecting segment 31, the second connecting segment 33, and the recessed segment 32 each have a mounting cavity 35, in which a plurality of reinforcing ribs 36 are fixed, dividing the mounting cavity 35 into a plurality of reinforcing cavities. The reinforcing ribs 36 may also extend along the extension direction of the first connecting segment 31, with the reinforcing ribs 36 in the first connecting segment 31 extending from one end to the other, the reinforcing ribs 36 in the second connecting segment 33 extending from one end to the other, and the reinforcing ribs 36 in the recessed segment 32 extending from one end to the other. The plurality of reinforcing ribs 36 can respectively divide the mounting cavities 35 of the first connecting segment 31, the second connecting segment 33, and the recessed segment 32 into a plurality of irregular honeycomb cavity structures. Compared to the mounting cavity 35, the plurality of irregular honeycomb cavity structures divided by the reinforcing ribs 36 can be smaller in size, and these smaller partitioned areas can effectively absorb and disperse vibration excitation from other parts of the vehicle. Furthermore, when vibration occurs, the reinforcing ribs and honeycomb cavity structure within the first connecting section 31, the second connecting section 33, and the recessed section 32 can act as a whole to absorb and disperse vibration energy, reducing the transmission of vibration within the vehicle. In addition, noise typically propagates through vibration. In this embodiment, reducing vibration effectively reduces noise propagation, and the reinforcing ribs further impede noise propagation, thereby reducing noise intensity and propagation distance. Therefore, the reinforcing ribs 36 and the reinforcing cavities effectively absorb vibration excitation and noise, improving the overall NVH performance of the vehicle. Moreover, the reinforcing ribs 36, installed in the first connecting section 31, the second connecting section 33, and the recessed section 32, not only enhance the local strength of the mounting cavity 35 but also strengthen the overall strength of the entire front floor connecting beam 3. The front floor connecting beam 3 is more stable under external forces, reducing deformation and vibration caused by external forces.

[0042] In some embodiments, both the top fastening member 41 and the bottom fastening member 42 can be battery pack fixing nuts, and the number of top fastening members 41 can be 2-4. Exemplarily, in the embodiments of this application, the number of top fastening members 41 can be 2, 3 or 4.

[0043] In some embodiments, the distance between two adjacent top fastening members 41 can be 300mm-500mm. For example, the distance between two adjacent top fastening members 41 can be 300mm, 350mm, 400mm, 450mm or 500mm, etc.

[0044] The distance between the bottom fastener 42 and the adjacent top fastener 41 can be 150mm-250mm. For example, the distance between the bottom fastener 42 and the adjacent top fastener 41 can be 150mm, 200mm or 250mm, etc.

[0045] Furthermore, in this embodiment, the first connecting segment 31, the second connecting segment 33, and the recessed segment 32 all have mounting cavities 35, and each mounting cavity is divided into multiple reinforcing cavities by multiple reinforcing ribs 36. This can enhance the support performance of the front floor connecting beam 3 while reducing its weight. During vehicle operation, the weight of the front floor connecting beam 3 itself, the weight of the exhaust pipe 5 placed in the exhaust pipe receiving cavity 34 formed above the recessed segment 32, and the adjustment of the suspension support stiffness can ensure the vehicle's smooth and stable handling as much as possible. In other words, even if the battery pack 2 is offset along the Y-direction of the vehicle, the vehicle can still be as stable as possible during operation.

[0046] In some optional embodiments, both the top fastening member 41 and the bottom fastening member 42 penetrate a portion of the reinforcing rib 36 of the second connecting segment 33 along an extension direction perpendicular to the second connecting segment 33. That is, the reinforcing rib 36 can be respectively arranged at the installation positions of the top and bottom reinforcing ribs 36 of the second connecting segment 33, providing support when the bolts are tightened and preventing deformation of the front floor connecting beam 3 during tightening. Preferably, the bottom fastening member 42 installed in the second connecting segment 33 also penetrates the portion of the reinforcing rib 36 of the first connecting segment 31.

[0047] In this embodiment, the same body-in-white can be matched with battery packs 2 of different configurations, which can enrich the vehicle configuration while effectively avoiding the development of multiple battery packs 2, thus saving investment. Moreover, the biased arrangement of the battery pack 2 can reserve the Y-axis space of the vehicle to one side, and the overall space can be combined, so that the vehicle space can be used more rationally. The front floor connecting beam 3 adopts an aluminum U-shaped structure, which can effectively isolate the heat damage of the exhaust pipe 5 to the body-in-white. Furthermore, the battery pack 2 is connected to the body-in-white sill beam 1 through the previous floor connecting beam 3, which can also improve NVH and road noise performance.

[0048] In this embodiment, the reinforcing rib 36 can be arranged along the extension direction of the front floor connecting beam 3, and the thickness of the reinforcing rib 36 can be 1.5mm-2.5mm. For example, the thickness of the reinforcing rib 36 can be 1.5mm, 2mm, or 2.5mm, etc. The spacing between two adjacent reinforcing ribs 36 can be 50mm-80mm, and the reinforcing cavity can have a honeycomb structure. For example, the spacing between two adjacent reinforcing ribs 36 can be 50mm, 60mm, 70mm, or 80mm, etc.

[0049] This application also provides a vehicle that includes the aforementioned front floor system. The vehicle in this application includes the front floor system of any of the above embodiments, which will not be described again here.

[0050] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A front floor system, characterized in that, It includes: Threshold beam (1), the threshold beam (1) includes a first threshold longitudinal beam (11) and a second threshold longitudinal beam (12) that are parallel to each other; Battery pack (2), the battery pack (2) is located between the first threshold beam (11) and the second threshold beam (12), and one side of the battery pack (2) is fixed to the first threshold beam (11), the battery pack (2) is biased towards the first threshold beam (11) relative to the second threshold beam (12); A front floor connecting beam (3) is provided, with one side of the front floor connecting beam (3) connected to the side of the battery pack (2) away from the first sill beam (11), and the other side of the front floor connecting beam (3) connected to the second sill beam (12).

2. The front floor system as claimed in claim 1, characterized in that, The front floor connecting beam (3) includes: The first connecting segment (31) is connected to the second threshold longitudinal beam (12); A recessed section (32) is connected to the first connecting section (31) on one side and to a second connecting section (33) on the other side, and the second connecting section (33) is connected to the battery pack (2).

3. The front floor system as described in claim 2, characterized in that: The recessed section (32) is made of aluminum, and the upper part of the recessed section (32) forms an exhaust pipe accommodating cavity (34).

4. The front floor system as claimed in claim 3, characterized in that, The cross-section of the exhaust pipe accommodating cavity (34) is U-shaped, with a width of 80mm-120mm and a height of 50mm-80mm; The wall thickness of the recessed section (32) is 2mm-4mm.

5. The front floor system as claimed in claim 3, characterized in that, The recessed section (32) includes: A vertical segment (321) is connected to the first connecting segment (31), and a bottom segment (322) is connected to the side of the vertical segment (321) away from the first connecting segment (31); A ramp section (323) is fixed to the side of the bottom section (322) away from the vertical section (321), and the ramp section (323) extends obliquely from the connection with the bottom section (322) and is connected to the second connecting section (33). The vertical section (321), the ramp section (323) and the bottom section (322) together form the exhaust pipe receiving cavity (34).

6. The front floor system as claimed in claim 5, characterized in that, The angle between the slope section (323) and the bottom section (322) is 120°-150°; The vertical section (321) and the bottom section (322) are connected by a transition inclined section, and the angle between the transition inclined section and the bottom section (322) is 135°-150°.

7. The front floor system as claimed in claim 2, characterized in that: The thickness of the first connecting segment (31) is less than the thickness of the second connecting segment (33).

8. The front floor system as claimed in claim 7, characterized in that, The thickness of the first connecting segment (31) is 2mm-3mm, and the thickness of the second connecting segment (33) is 4mm-6mm; Furthermore, the bottom surface of the first connecting segment (31) is 3mm-8mm higher than the bottom surface of the second connecting segment (33).

9. The front floor system as claimed in claim 2, characterized in that: The second connecting section (33) is connected to the battery pack (2) via a bidirectional tightening mechanism.

10. The front floor system as claimed in claim 9, characterized in that: The bidirectional tightening mechanism includes a top tightening member (41), which is spaced apart along the extension direction of the second connecting section (33) and penetrates the second connecting section (33) and the battery pack (2) respectively along the first direction. The bidirectional tightening mechanism also includes a bottom tightening member (42), which is also spaced along the extension direction of the second connecting section (33). The top tightening member (41) and the bottom tightening member (42) are spaced apart. The bottom tightening member (42) penetrates the battery pack (2) and the second connecting section (33) respectively along a second direction, which is opposite to the first direction.

11. The front floor system as claimed in claim 10, characterized in that, The top fastening member (41) and the bottom fastening member (42) are both battery pack fixing nuts, and the number of the top fastening members (41) is 2-4; The distance between two adjacent top clamping parts (41) is 300mm-500mm, and the distance between the bottom clamping part (42) and the adjacent top clamping part (41) is 150mm-250mm.

12. The front floor system as claimed in claim 10, characterized in that: The first connecting segment (31), the second connecting segment (33) and the recessed segment (32) each have a mounting cavity (35), and a plurality of reinforcing ribs (36) are fixed in the mounting cavity (35), and the plurality of reinforcing ribs (36) divide the mounting cavity (35) into a plurality of reinforcing cavities.

13. The front floor system as claimed in claim 12, characterized in that: Both the top fastening member (41) and the bottom fastening member (42) penetrate a portion of the reinforcing rib (36) of the second connecting section (33) along an extension direction perpendicular to the second connecting section (33).

14. The front floor system as claimed in claim 12, characterized in that, The reinforcing rib (36) is provided along the extension direction of the front floor connecting beam (3), and the thickness of the reinforcing rib (36) is 1.5mm-2.5mm; The spacing between two adjacent reinforcing ribs (36) is 50mm-80mm, and the reinforcing cavity has a honeycomb structure.

15. A vehicle, characterized in that, It includes the front floor system as described in any one of claims 1 to 14.

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