Front floor system and vehicle

Abstract

The invention relates to a front floor system and a vehicle, and the front floor system comprises a doorsill beam which comprises a first doorsill longitudinal beam and a second doorsill longitudinal beam which are parallel to each other; the battery pack is located between the first threshold longitudinal beam and the second threshold longitudinal beam, one side of the battery pack is fixed to the first threshold longitudinal beam, and the battery pack deviates to be close to the first threshold longitudinal beam relative to the second threshold longitudinal beam; and one side of the front floor connecting beam is connected to the side, away from the first threshold longitudinal beam, of the battery pack, and the other side of the front floor connecting beam is connected with the second threshold longitudinal beam. The battery pack is installed in the mode that the battery pack deviates to be close to the second threshold longitudinal beam relative to the first threshold longitudinal beam, one side of the battery pack can be directly connected with the first threshold longitudinal beam, the other side opposite to the side can be connected with the second threshold longitudinal beam through the front floor connecting beam, and arrangement of a battery supporting structure is reduced; and when the vehicle types are different, the same battery pack can be mounted on the vehicles of different vehicle types by adjusting the structure of the front floor connecting beam.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle manufacturing, and in particular to a front floor system and a vehicle. Background Art

[0002] At present, electric vehicles among new energy vehicles usually use battery packs to provide power for 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 restrict each other. 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 close to the door sill beam, which increases the overall weight and cost of the vehicle. In addition, when the bottom structure of vehicles of different models changes, it is usually necessary to develop a battery pack corresponding to the bottom structure of the vehicle, and the development of the battery pack also requires a large cost. Summary of the invention

[0003] The present application provides a front floor system and a vehicle, which can solve the technical problem in the related art that when the battery pack is installed in the middle of the frame, multiple battery support structures need to be added on both sides of the battery pack close to the door sill beam, which increases the overall weight and cost of the vehicle, and when the bottom structure of different vehicle models changes, the development of the battery pack also requires a large cost.

[0004] In a first aspect, an embodiment of the present application provides a front floor system, comprising: a threshold beam, the threshold beam comprising a first threshold longitudinal beam and a second threshold longitudinal beam parallel to each other; a battery pack, the battery pack is located between the first threshold longitudinal beam and the second threshold longitudinal beam, and one side of the battery pack is fixed to the first threshold longitudinal beam, the battery pack is biased closer to the first threshold longitudinal beam relative to the second threshold longitudinal beam; a front floor connecting beam, one side of the front floor connecting beam is connected to a side of the battery pack away from the first threshold longitudinal beam, and the other side of the front floor connecting beam is connected to the second threshold longitudinal beam.

[0005] In combination with the first aspect, in one embodiment, the front floor connecting beam includes: a first connecting section, the first connecting section is connected to the second door sill longitudinal beam; a recessed section, one side of the recessed section is connected to the first connecting section, and the other side is connected to the second connecting section, and the second connecting section is connected to the battery pack.

[0006] In combination with the first aspect, in one implementation, the recessed section is made of aluminum material, and the upper portion of the recessed section forms an exhaust pipe accommodating cavity.

[0007] In combination with the first aspect, in one embodiment, the recessed section includes: a vertical section, the vertical section is connected to the first connecting section, and the side of the vertical section away from the first connecting section is connected to the bottom surface section; a slope section, the slope section is fixed to the side of the bottom surface section away from the vertical section, and the slope section extends obliquely from the connection with the bottom surface section and is connected to the second connecting section, and the vertical section, the slope section and the bottom surface section together form the exhaust pipe accommodating cavity.

[0008] In combination with the first aspect, in one embodiment, a thickness of the first connecting segment is smaller than a thickness of the second connecting segment.

[0009] In combination with the first aspect, in one implementation, the second connecting section is connected to the battery pack via a bidirectional tightening mechanism.

[0010] In combination with the first aspect, in one embodiment, the bidirectional tightening mechanism includes a top tightening member, which is arranged at intervals along the extension direction of the second connecting segment, and the top tightening member penetrates the second connecting segment and the battery pack respectively along the first direction; the bidirectional tightening mechanism also includes a bottom tightening member, which is also arranged at intervals along the extension direction of the second connecting segment, and the top tightening member is spaced apart from the bottom tightening member, and the bottom tightening member penetrates the battery pack and the second connecting segment respectively along the second direction, and the second direction is opposite to the first direction.

[0011] In combination with the first aspect, in one embodiment, the first connecting section, the second connecting section and the recessed section all have an installation cavity, a plurality of reinforcing ribs are fixed in the installation cavity, and the plurality of reinforcing ribs divide the installation cavity into a plurality of reinforcing cavities.

[0012] In combination with the first aspect, in one embodiment, the top tightening member and the bottom tightening member both penetrate part of the reinforcing ribs of the second connecting section along a direction perpendicular to the extension direction of the second connecting section.

[0013] In a second aspect, an embodiment of the present application provides a vehicle, which includes the front floor system as described above.

[0014] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0015] By installing 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, and the other side opposite to the side is connected to the second sill longitudinal beam through the front floor connecting beam, thereby reducing the layout of the battery support structure, and the same battery pack can be installed on vehicles of different models by adjusting the structure of the front floor connecting beam for different vehicle models, thereby solving the technical problems in the related art that when the battery pack is installed in the middle of the frame, multiple battery support structures need to be added, and when the bottom structure of vehicles of different models changes, the development of the battery pack also requires greater costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the top view of the front floor system provided in an embodiment of the present application;

[0018] Figure 2 for Figure 1 Cross-section of the middle AA;

[0019] Figure 3 A schematic diagram of a top view of the structure of the connection between the battery pack and the front floor connecting beam provided in an embodiment of the present application;

[0020] Figure 4 for Figure 3 Cross-section of the middle BB;

[0021] Figure 5 A schematic diagram of a three-dimensional structure of a battery pack connected to a front floor connecting beam according to an embodiment of the present application;

[0022] Figure 6 A schematic side structural diagram of the front floor connecting beam provided in an embodiment of the present application.

[0023] In the figure:

[0024] 1. Threshold beam; 11. First threshold longitudinal beam; 12. Second threshold longitudinal beam;

[0025] 2. Battery pack;

[0026] 3. Front floor connecting beam; 31. First connecting section; 32. Concave section; 321. Vertical section; 322. Bottom section; 323. Slope section; 33. Second connecting section; 34. Exhaust pipe accommodating cavity; 35. Installation cavity; 36. Reinforcement ribs;

[0027] 41. Top tightening piece; 42. Bottom tightening piece;

[0028] 5. Exhaust pipe. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] The embodiment of the present application provides a front floor system, which can solve the technical problem in the related art that when the battery pack is installed in the middle of the frame, multiple battery support structures need to be added on both sides of the battery pack close to the door sill beam, which increases the overall weight and cost of the vehicle, and when the bottom structure of different vehicle models changes, the development of the battery pack also requires a large cost.

[0031] See also Figure 1 As shown, a front floor system provided in an embodiment of the present application may include: a threshold beam 1, wherein the threshold beam 1 includes a first threshold longitudinal beam 11 and a second threshold longitudinal beam 12 which are parallel to each other; a battery pack 2, wherein the battery pack 2 is located between the first threshold longitudinal beam 11 and the second threshold longitudinal beam 12, and one side of the battery pack 2 is fixed to the first threshold longitudinal beam 11, and the battery pack 2 is closer to the first threshold longitudinal beam 11 relative to the second threshold longitudinal beam 12; a front floor connecting beam 3, wherein one side of the front floor connecting beam 3 is connected to a side of the battery pack 2 away from the first threshold longitudinal beam 11, and the other side of the front floor connecting beam 3 is connected to the second threshold longitudinal beam 12.

[0032] The embodiment of the present application installs the battery pack 2 closer to the first threshold longitudinal beam 11 relative to the second threshold longitudinal beam 12, so that one side of the battery pack 2 can be directly connected to the first threshold longitudinal beam 11, and the other side opposite to the side is connected to the second threshold longitudinal beam 12 through the front floor connecting beam 3, that is, one side of the battery pack 2 is directly fixed to the first threshold longitudinal beam 11 through the frame of the battery pack 2, and the other side is fixed to the second threshold longitudinal beam 12 through the front floor longitudinal beam as a battery support structure. At this time, only one battery support structure can be set on the opposite sides of the battery pack 2 to install the battery pack 2 to the preset position, reducing the arrangement of the battery support structure, reducing the cost and the overall weight of the vehicle. In other words, the battery pack 2 in the embodiment of the present application is arranged along the Y direction (the width direction of the vehicle) of the vehicle, so that the space can be reserved for the other side, which is conducive to integrating scattered space, so as to better provide a complete space and enhance the structural regularity of the whole vehicle. Moreover, the same battery pack 2 can be installed on vehicles of different models by adjusting the structure of the front floor connecting beam 3. In addition, in vehicles of the same model, the front floor connecting beam 3 can also be used to install battery packs 2 of different sizes or models, thereby enhancing the flexibility and adaptability of the mutual cooperation between the vehicle and the battery pack 2, and solving the technical problems in the related technology that when the battery pack 2 is installed in the middle of the frame, it is necessary to add multiple battery supporting structures, and when the bottom structure of vehicles of different models changes, the development of the battery pack 2 also requires a large cost.

[0033] See also Figure 3 and Figure 4 As shown, in some optional embodiments, the front floor connecting beam 3 may include: a first connecting section 31, the first connecting section 31 is connected to the second sill longitudinal beam 12; a recessed section 32, one side of the recessed section 32 is connected to the first connecting section 31, and the other side is connected to the second connecting section 33, the second connecting section 33 is connected to the battery pack 2. In the embodiment of the present application, the first connecting section 31 may be located below the second sill longitudinal beam 12, and the first connecting section 31 and the second sill longitudinal beam 12 may support each other; the second connecting section 33 may be located above the frame of the battery pack 2 connected thereto, and the first connecting section 31 and the second sill longitudinal beam 12, as well as the second connecting section 33 and the frame of the battery pack 2 may be connected by bolts. In the embodiment of the present application, the recessed section 32 may be provided to enhance the overall strength of the front floor connecting beam 3, and the cross-sectional shape of the front floor connecting beam 3 may be changed by providing the recessed section 32, thereby enhancing the overall strength of the front floor connecting beam 3, so that the front floor connecting beam 3 can better resist external loads and deformation, thereby improving the overall load-bearing capacity and anti-deformation capacity of the front floor connecting beam 3.

[0034] In some optional embodiments, the recessed section 32 is made of aluminum material, and the upper part of the recessed section 32 forms an exhaust pipe accommodating chamber 34. The exhaust pipe accommodating chamber 34 formed by the recessed section 32 can extend along the length direction of the vehicle, and the exhaust pipe 5 of the vehicle is accommodated in the exhaust pipe accommodating chamber 34, which can reasonably use the bottom space of the vehicle and enhance the structural design and space utilization efficiency of the whole vehicle. In the related art, since 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 the battery pack 2, the exhaust pipe 5 will be wrapped with heat insulation cotton around the periphery, which occupies more space at the bottom of the vehicle and increases a certain manufacturing cost. In the embodiment of the present application, by providing an exhaust pipe accommodating cavity 34, and the recessed section 32 is made of aluminum material, the recessed section 32 can be made into a U-shaped beam structure at this time, so that the recessed section 32 forms a wrapping shape around the exhaust pipe 5, that is, the exhaust pipe 5 is placed in the exhaust pipe accommodating cavity 34 surrounded by the recessed section 32, saving the bottom space of the vehicle, and the material properties of the recessed section 32 itself isolate or reduce the heat damage caused by the high temperature around the exhaust pipe 5 to the white body and the battery pack 2. Furthermore, the recessed section 32 is made of aluminum material, which can avoid the rust problem caused by heat damage and indirectly extend the service life of the front floor connecting beam 3. Preferably, the first connecting section 31, the second connecting section 33 and the recessed section 32 in the embodiment of the present application can be an extruded aluminum beam structure 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 may also be made of other materials such as stainless steel. Stainless steel itself has excellent corrosion resistance and heat resistance, and can withstand high temperature and corrosive environments. Therefore, it is also more suitable for the manufacture of high-temperature components such as automobile exhaust pipes, and can also be used for the front floor connecting beam 3 in this application. At the same time, the mechanical properties of stainless steel are also good, which can meet the overall strength and durability requirements of the front floor connecting beam 3.

[0035] See also Figure 2As shown, in some optional embodiments, the recessed section 32 may include: a vertical section 321, wherein the vertical section 321 is connected to the first connecting section 31, and the side of the vertical section 321 away from the first connecting section 31 is connected to the bottom section 322; a slope section 323, wherein the slope section 323 is fixed to the side of the bottom section 322 away from the vertical section 321, and the slope section 323 extends obliquely from the connection with the bottom section 322 and is connected to the second connecting section 33, and the vertical section 321, the slope section 323 and the bottom section 322 together enclose the exhaust pipe accommodating cavity 34. In the embodiment of the present application, the cross section of the vertical section 321 can extend along the Z direction of the vehicle (the height direction of the vehicle), so that the exhaust pipe accommodating chamber 34 surrounded by the vertical section 321, the slope section 323 and the bottom section 322 has a larger accommodating space. In some other embodiments, the vertical section 321 can also have a certain inclination angle. Preferably, the vertical section 321 and the second sill longitudinal beam 12 are arranged at intervals along the Y direction of the vehicle. The cross section of the bottom section 322 can extend along the Y direction of the vehicle (the lateral direction of the vehicle). At this time, the vertical section 321 and the bottom section 322 are connected by a small truncated inclined section. Compared with the vertical section 321 and the bottom section 322 forming a right angle, the inclined section can enhance the connection strength of the connection between the vertical section 321 and the bottom section 322, and further enhance the supporting performance of the front floor connecting beam 3. It should be understood that the cross section of the slope section 323 is configured to extend obliquely from the bottom section 322 toward the side close to the second connecting section 33, and the inclination direction of the slope section 323 is configured to be inclined toward the side close to the vertical section 321. The slope section 323 in the embodiment of the present application can be used as a slope transition structure, and the vibration generated by the battery pack 2 can be better transmitted through the slope section 323, and the stress from the battery pack 2 or other components can be effectively dispersed, reducing the problem of structural damage due to stress concentration. Preferably, when the front floor connecting beam 3 needs to be used in different vehicle models, by adjusting the specific sizes and shapes of the vertical section 321, the slope section 323 and the bottom section 322 respectively, the front floor connecting beam 3 can be flexibly adapted to the needs of different vehicle models and battery packs 2, thereby enabling the front floor connecting beam 3 to be more widely used in different types of vehicles, thereby improving the versatility and market competitiveness of the front floor connecting beam 3. Moreover, compared with the related art in which different vehicle models need to develop battery packs 2 adapted to their structures, only adjusting the specific sizes and shapes of the entire vertical section 321, the slope section 323 and the bottom section 322 can reduce design and production time and reduce vehicle production costs.

[0036] Preferably, the thickness of the first connecting section 31 is smaller than the thickness of the second connecting section 33. When the front floor connecting beam 3 is installed on the vehicle, the bottom surface of the first connecting section 31 can be higher than the bottom surface of the second connecting section 33. Specifically, the second connecting section 33 is connected to the frame of the battery pack 2, that is, the second connecting section 33 directly mounts the battery pack 2, and it bears a large load. If the thickness of the second connecting section 33 is set to be thicker, the installation cavity 35 and the reinforcement cavity surrounded by the second connecting section 33 can be larger, so that the installation cavity 35 and the reinforcement cavity of the second connecting section 33 can resist deformation; while the first connecting section 31 is connected to the second sill longitudinal beam 12, the load borne by the first connecting section 31 is smaller, so the thickness of the first connecting section 31 can be set to be smaller, and the installation cavity 35 and the reinforcement cavity of the first connecting section 31 can also meet its load-bearing capacity when the installation cavity 35 and the reinforcement cavity of the first connecting section 31 are smaller, so as to achieve the purpose of reducing the overall weight of the front floor connecting beam 3 and reducing the production cost. In the embodiment of the present 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 thus the thickness of the first connecting section 31 is set to be smaller than the thickness of the second connecting section 33 .

[0037] In some optional embodiments, the second connecting section 33 is connected to the battery pack 2 by a two-way tightening mechanism. In the embodiment of the present application, the second connecting section 33 and the frame of the battery pack 2 can be tightened from top to bottom and from bottom to top respectively along the height direction of the vehicle by a two-way tightening mechanism. Compared with unidirectional tightening, the two-way tightening method is more resistant to external impact and vibration, thereby enhancing the firmness of the connection, so that the firmness and stability of the connection between the second connecting section 33 and the battery pack 2 are effectively reduced, and the possibility of loosening of the second connecting section 33 and the battery pack 2 due to vibration or impact during vehicle driving is effectively reduced, and the connection strength between the second connecting section 33 and the battery pack 2 can be limited by setting a two-way tightening mechanism. And by setting a two-way tightening mechanism, the relative movement between the second connecting section 33 and the battery pack 2 can be effectively limited, thereby protecting the battery pack 2 and its internal components from damage caused by movement. In the embodiment of the present application, by providing a two-way tightening mechanism to connect the second connecting section 33 and the battery pack 2, the battery pack 2 can be reduced from falling off or being damaged due to vibration or impact during the driving of the vehicle, thereby improving the safety of the entire vehicle. Moreover, since the connection between the second connecting section 33 and the battery pack 2 is relatively tight, the noise generated by the looseness between the second connecting section 33 and the battery pack 2 during the driving of the vehicle can also be effectively reduced, thereby improving the riding comfort of the passengers. Furthermore, since the two-way tightening mechanism improves the firmness and stability of the connection between the second connecting section 33 and the battery pack 2, the maintenance requirements caused by the looseness between the second connecting section 33 and the battery pack 2 are reduced, thereby reducing the maintenance cost.

[0038] See also Figure 5 and Figure 6As shown, in some optional embodiments, the bidirectional tightening mechanism includes a top tightening member 41, which is arranged at intervals along the extension direction of the second connecting section 33, and the top tightening member 41 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 arranged at intervals along the extension direction of the second connecting section 33, and the top tightening member 41 is arranged at intervals from the bottom tightening member 42, and the bottom tightening member 42 penetrates the battery pack 2 and the second connecting section 33 respectively along the second direction, and the second direction is opposite to the first direction. In the embodiment of the present application, the top tightening member 41 extends into the second connecting section 33 and the frame of the battery pack 2 from top to bottom in the height direction of the vehicle, and the bottom tightening member 42 extends into the frame of the battery pack 2 and the second connecting section 33 from bottom to top in order, and together realizes the connection between the second connecting section 33 and the battery pack 2. Specifically, when assembling the vehicle, the second connecting section 33 and the battery pack 2 can be connected through the top tightening member 41 to form a battery pack assembly. The top tightening member 41 can be set to two, and the two top tightening members 41 are respectively installed at the two ends of the second connecting section 33, so that the second connecting section 33 can be connected to the battery pack 2 while saving materials. In some other embodiments, the top tightening member 41 can also be set to other numbers, and can also be installed at the two ends or other positions in the middle of the second connecting section 33. Usually, when installing the battery pack 2 on the vehicle, it is necessary to lift the white body to a certain height before installation. In the embodiment of the present application, the battery pack 2 assembly can be lifted to a preset position under the white body, and then the bottom tightening member 42 is driven from bottom to top to connect the battery pack 2 assembly to the white body. Preferably, the first connecting section 31 and the second sill longitudinal beam 12 are also tightened by the bottom tightening member 42 in this step. The assembly in the embodiment of the present application is simple and achievable, and the battery pack 2 and the front floor connecting beam 3 are fastened in both directions to form a stable and reliable structure, which ensures the strength and durability of the connection point. The top tightening member 41 and the bottom tightening member 42 in the embodiment of the present application can be set as nuts to fix the battery pack 2. In some other embodiments, the top tightening member 41 and the bottom tightening member 42 can also be other connection structures. Preferably, before the tightening operation is performed, reserved holes can be opened at the second connecting section 33 and the frame of the battery pack 2, and the top tightening member 41 and the bottom tightening member 42 can be penetrated through the reserved holes to achieve the fastening of the second connecting section 33 and the battery pack 2. 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 and the metal frame of the battery pack 2 together, or designing a snap-on structure on the second connecting section 33 and the battery pack 2 to achieve connection by snap-on, etc.

[0039] In some optional embodiments, the first connecting section 31, the second connecting section 33 and the recessed section 32 all 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. The reinforcing ribs 36 may also extend along the extension direction of the first connecting section 31, and the reinforcing ribs 36 in the first connecting section 31 extend from one end to the other end of the first connecting section 31, the reinforcing ribs 36 in the second connecting section 33 extend from one end to the other end of the second connecting section 33, and the reinforcing ribs 36 in the recessed section 32 extend from one end to the other end of the recessed section 32; the plurality of reinforcing ribs 36 may respectively divide the mounting cavities 35 of the first connecting section 31, the second connecting section 33 and the recessed section 32 into a plurality of irregular honeycomb cavity structures, and the plurality of irregular honeycomb cavity structures divided by the reinforcing ribs 36 may be smaller in size than the mounting cavity 35, and these smaller separation areas may effectively absorb and disperse vibration excitation from other parts of the vehicle. And when vibration occurs, the reinforcing ribs and honeycomb cavity structure in the first connecting section 31, the second connecting section 33 and the recessed section 32 can absorb and disperse the vibration energy as a whole, reducing the transmission of vibration in the vehicle. In addition, noise is usually transmitted through vibration. In the embodiment of the present application, the transmission of noise can be effectively reduced by reducing vibration, and the setting of the reinforcing ribs makes the noise more obstructed during the transmission process, thereby reducing the intensity and transmission distance of the noise. Therefore, the setting of the reinforcing ribs 36 and the reinforcing cavity can effectively absorb vibration excitation and noise, and improve the NVH performance of the whole vehicle. Furthermore, the reinforcing ribs 36 are installed in the first connecting section 31, the second connecting section 33 and the recessed section 32, which not only improves the local strength of the installation cavity 35, but also enhances the overall strength of the entire front floor connecting beam 3. The front floor connecting beam 3 can also be more stable when subjected to external forces, reducing deformation and vibration caused by external forces.

[0040] Furthermore, the first connecting section 31, the second connecting section 33 and the recessed section 32 in the embodiment of the present application all have an installation cavity 35, and each installation cavity is divided into multiple reinforcement cavities by multiple reinforcement ribs 36, which can enhance the support performance of the front floor connecting beam 3 while reducing the weight of the front floor connecting beam 3. During the driving of the vehicle, the weight of the front floor connecting beam 3 itself, the weight of the exhaust pipe 5 placed in the exhaust pipe accommodating cavity 34 formed above the recessed section 32, and the adjustment of the suspension support stiffness can ensure the vehicle's handling as stable as possible. In other words, even if the battery pack 2 is offset along the Y direction of the vehicle, the vehicle can be as stable as possible during driving.

[0041] In some optional embodiments, the top tightening member 41 and the bottom tightening member 42 both penetrate part of the reinforcing rib 36 of the second connecting section 33 along the extending direction perpendicular to the second connecting section 33. That is, part of the reinforcing rib 36 can be arranged at the installation position of the top reinforcing rib 36 and the bottom reinforcing rib 36 of the second connecting section 33, respectively, to play a supporting role when the bolts are tightened, so as to prevent the front floor connecting beam 3 from deforming during tightening. Preferably, part of the reinforcing rib 36 of the first connecting section 31 is also penetrated by the bottom tightening member 42 installed in the second connecting section 33.

[0042] In the embodiment of the present application, 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 and saving investment; and the biased arrangement of the battery pack 2 can reserve the Y-direction space of the vehicle to one side, and the overall space is merged, so that the vehicle space can be more reasonably used; 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; and the battery pack 2 is connected to the body-in-white door sill beam 1 through the front floor connecting beam 3, which can also improve NVH and road noise performance.

[0043] The embodiment of the present application further provides a vehicle, which includes the above-mentioned front floor system. The vehicle in the embodiment of the present application includes the front floor system in any of the above-mentioned embodiments, which will not be repeated here.

[0044] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0045] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0046] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A front floor system, characterized in that: It includes: A threshold beam (1), the threshold beam (1) comprising a first threshold longitudinal beam (11) and a second threshold longitudinal beam (12) which are parallel to each other; A battery pack (2), the battery pack (2) being located between the first threshold longitudinal beam (11) and the second threshold longitudinal beam (12), and one side of the battery pack (2) being fixed to the first threshold longitudinal beam (11), and the battery pack (2) being closer to the first threshold longitudinal beam (11) than the second threshold longitudinal beam (12); A front floor connecting beam (3), one side of the front floor connecting beam (3) being connected to a 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).

2. The front floor system according to claim 1, characterized in that The front floor connecting beam (3) comprises: A first connecting section (31), the first connecting section (31) being connected to the second sill longitudinal beam (12); A recessed section (32), one side of the recessed section (32) is connected to the first connecting section (31), and the other side is connected to a second connecting section (33), and the second connecting section (33) is connected to the battery pack (2).

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

4. The front floor system according to claim 3, characterized in that The recessed section (32) comprises: A vertical section (321), the vertical section (321) being connected to the first connecting section (31), and a side of the vertical section (321) away from the first connecting section (31) being connected to a bottom surface section (322); A slope section (323), wherein the slope section (323) is fixed to a side of the bottom section (322) away from the vertical section (321), and the slope section (323) extends obliquely from a connection with the bottom section (322) and is connected to the second connecting section (33), and the vertical section (321), the slope section (323) and the bottom section (322) together enclose the exhaust pipe accommodating chamber (34).

5. The front floor system according to claim 2, characterized in that: The thickness of the first connecting section (31) is smaller than the thickness of the second connecting section (33).

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

7. The front floor system according to claim 6, characterized in that: The bidirectional tightening mechanism comprises a top tightening member (41), the top tightening member (41) is arranged at intervals along the extension direction of the second connecting section (33), and the top tightening member (41) 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 arranged at intervals along the extension direction of the second connecting section (33), and the top tightening member (41) is arranged at intervals from the bottom tightening member (42), and the bottom tightening member (42) penetrates the battery pack (2) and the second connecting section (33) respectively along a second direction, and the second direction is opposite to the first direction.

8. The front floor system according to claim 7, characterized in that: The first connecting section (31), the second connecting section (33) and the recessed section (32) all have an installation cavity (35), a plurality of reinforcing ribs (36) are fixed in the installation cavity (35), and the plurality of reinforcing ribs (36) divide the installation cavity (35) into a plurality of reinforcing cavities.

9. The front floor system according to claim 8, characterized in that: The top tightening piece (41) and the bottom tightening piece (42) both penetrate part of the reinforcing rib (36) of the second connecting section (33) in a direction perpendicular to the extension direction of the second connecting section (33).

10. A vehicle, characterized in that: It comprises the front floor system according to any one of claims 1 to 9.

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