Lower vehicle body platform of new energy vehicle
Through the modularly designed new energy vehicle body platform, the problem of not being able to share resources between different models is solved, and the wheelbase and wheelbase are flexible adjustments are achieved, development costs are reduced and resource utilization efficiency is improved.
Patent Information
- Application Number
- CN202411915236.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-28
AI Technical Summary
The existing technology is difficult to achieve platformization of new energy vehicles, resulting in the inability to share production tooling and resources between different models, increasing development costs.
A new energy vehicle lower body platform is designed, adopting a modular design, including the cabin module, battery bearing module and rear floor skeleton module that are connected in sequence. By adjusting components such as the rear floor front beam module and the central channel module, the wheelbase and wheelbase adjustment are achieved.
Through modular design, the cost of development of different models is reduced, most production tooling can be shared, and resource utilization efficiency is improved.
Smart Images
Figure CN119705645A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a lower vehicle body platform of a new energy vehicle. Background Art
[0002] In recent years, automobile production and market sales have increased year by year. The underbody of an automobile is a very important assembly structure in the automobile and accounts for a relatively large proportion of the cost.
[0003] At present, in some typical technical solutions, different models use different lower bodies. This method requires each model to carry out the whole process separately, resulting in high costs and making it impossible to share production tools and other resources between different models, resulting in waste of resources. In other typical technical solutions, a modular lower body platform is used, but it usually also has
[0004] At present, due to the constraints of different factors such as vehicle type, wheelbase, and track size, most different models on the market develop a lower body for each model. It is difficult for multiple models to share the same lower body, and platformization cannot be guaranteed. Summary of the invention
[0005] The present invention provides a lower vehicle body platform of a new energy vehicle, which is used to solve the defect that it is difficult to achieve platformization in the prior art.
[0006] The present invention provides a lower body platform of a new energy vehicle, comprising a cabin module, a battery carrying module and a rear floor frame module connected in sequence; a rear floor front cross beam module is arranged between the battery carrying module and the floor frame module, and the rear floor front cross beam module is used for corresponding adjustment when the wheelbase direction is adjusted; floor side panel modules are connected to both sides of the width direction of the rear floor frame module; the battery carrying module comprises a central channel module, a first front floor and a second front floor, the first front floor and the second front floor are respectively connected to both sides of the width direction of the central channel module, a first threshold beam is connected to one side of the edge of the first front floor, and a second threshold beam is connected to one side of the edge of the second front floor, so that the first front floor, the second front floor, the first threshold beam and the second threshold beam cooperate to form an installation space for installing a battery pack, and the central channel module and the floor side panel module are used for corresponding adjustment when the wheelbase is adjusted.
[0007] According to a lower body platform of a new energy vehicle provided by the present invention, a first gap is provided between the first sill beam and the battery pack body in the installation space, and a second gap is provided between the second sill beam and the battery pack body in the installation space.
[0008] According to a lower body platform of a new energy vehicle provided by the present invention, the minimum values of the first gap and the second gap are both greater than or equal to 60 mm.
[0009] According to a lower body platform of a new energy vehicle provided by the present invention, a groove structure is formed in the length direction of the first front floor and the length direction of the second front floor.
[0010] According to a lower body platform of a new energy vehicle provided by the present invention, a third gap is provided between the first front floor and the top surface of the battery pack body in the installation space, and a fourth gap is provided between the second front floor and the top surface of the battery pack body in the installation space.
[0011] According to the lower body platform of a new energy vehicle provided by the present invention, the minimum values of the third gap and the fourth gap are both greater than or equal to 10 mm.
[0012] According to a lower body platform of a new energy vehicle provided by the present invention, front seat cross beams are provided on both the first front floor and the second front floor.
[0013] According to a lower body platform of a new energy vehicle provided by the present invention, the first front floor and the second front floor are both aluminum alloy stamping parts, and the first sill beam, the second sill beam, and the central channel module are all formed steel parts.
[0014] According to a lower body platform of a new energy vehicle provided by the present invention, a plurality of first bolt fixing structures are provided on the first sill beam and the second sill beam, a connection fixing module is connected to the rear floor frame module, a plurality of second bolt fixing structures are provided on the connection fixing module, and the first bolt fixing structure cooperates with the second bolt fixing structure to fix the battery pack.
[0015] According to a lower body platform of a new energy vehicle provided by the present invention, the tail of the rear floor frame module has a hollow structure, a spare tire basin is connected to the hollow structure by bolts, and the spare tire basin is made of composite material.
[0016] The present invention provides a lower body platform for a new energy vehicle. Through modular design, when the wheelbase is adjusted, only the front cross beam module of the rear floor needs to be adjusted to realize a vehicle model with a changed wheelbase, while other module components can be shared and adapted. When the wheelbase is adjusted, only the central channel module and the floor side panel module need to be adjusted, while other module components can be shared and adapted. In this way, the development cost of different vehicle models is reduced, most of the production tooling can be shared, and the resource utilization efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a schematic diagram of the explosion structure of the lower vehicle body platform provided by the present invention.
[0019] Figure 2 It is a schematic diagram of the structure of the lower vehicle body platform provided by the present invention when viewed from above.
[0020] Figure 3 It is a schematic diagram of the structure of installing a battery pack in the lower vehicle body platform provided by the present invention.
[0021] Reference numerals: 10. Cabin module; 20. Battery carrying module; 21. Central channel module; 22. First front floor; 23. Second front floor; 24. First sill beam; 25. Second sill beam; 26. Front seat cross beam; 261. Front seat front cross beam; 262. Front seat rear cross beam; 30. Rear floor frame module; 31. Hollow structure; 40. Cabin cross beam; 50. Rear floor front cross beam module; 60. Floor side panel module; 70. Connection and fixing module; 80. Spare tire basin; 90. Battery pack. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.
[0025] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0027] The development of new energy vehicles (i.e. electric vehicles) is getting faster and faster, and its products are updated faster. The lower body, as one of the key components of traditional vehicles, is also a key component of new energy vehicles. In related technologies, different models of cars often use different lower bodies, which greatly increases the cost of product iteration and update, resulting in excessively high overall costs.
[0028] Regarding the problems in related technologies, such as Figure 1-Figure 2As shown, the present invention provides a lower body platform of a new energy vehicle, comprising a cabin module 10, a battery carrying module 20 and a rear floor frame module 30 connected in sequence; a rear floor front cross beam module 50 is provided between the battery carrying module 20 and the floor frame module, and the rear floor front cross beam module 50 is used for corresponding adjustment when the wheelbase direction is adjusted; both sides of the rear floor frame module 30 in the width direction are connected with floor side panel modules 60; the battery carrying module 20 comprises a central channel module 21, a first front floor 22 and a second front floor 23, the first front floor 22 and the second front floor 23 are respectively connected to both sides of the width direction of the central channel module 21, a first sill beam 24 is connected to one side of the edge of the first front floor 22, and a second sill beam 25 is connected to one side of the edge of the second front floor 23, so that the first front floor 22, the second front floor 23, the first sill beam 24 and the second sill beam 25 cooperate to form an installation space for installing a battery pack 90, and the central channel module 21 and the floor side panel module 60 are used for corresponding adjustment when the wheelbase is adjusted. Different vehicle models have different wheelbases and track widths. In this embodiment, through modular design, when the wheelbase is adjusted, the wheelbase direction adjustment is achieved by replacing or adjusting the rear floor front cross beam module 50. When the track width is adjusted, the central channel module 21 and the floor side panel module 60 are replaced or adjusted to achieve the adjustment of the track width direction, thereby achieving coordination of the track width, thereby increasing the number of shared modules, greatly improving the shared amount, and reducing the cost of updating and iteration.
[0029] In the specific setting, in addition to the load-bearing function of traditional vehicles, the lower body of the new energy vehicle also needs to bear the weight of the battery pack 90. In this embodiment, the battery-carrying module 20 forms a roughly "sun"-shaped structure through the central channel, the first sill beam 24, the second sill beam 25, the first front floor 22 and the second front floor 23. This method improves the overall structural strength and can ensure the stability and reliability of the overall connection.
[0030] Specifically, the sequential connection method can be connected by a combination of a spin riveting process (SPR process) and structural adhesive, that is, the cabin module 10, the battery supporting module 20 and the rear floor frame module 30 can be connected by a spin riveting process. This connection method can reduce the overall dead weight and provide a higher load-bearing capacity.
[0031] It is understandable that different models are mainly reflected in the changes in wheelbase (increase or decrease of wheelbase) and / or changes in track (increase or decrease of track). In this embodiment, when adjusting the wheelbase, it is only necessary to change the size of the rear floor front beam module 50, that is, when adjusting the wheelbase, other module parts can remain unchanged to achieve sharing of different models, and the sharing rate is higher. When adjusting the track, it is only necessary to adjust the central channel module 21 and the floor side panel module 60 to achieve matching, and the sharing rate of parts is high. That is, even if both the track and the wheelbase need to be adjusted, it is only necessary to adjust the rear floor front beam module 50, the central channel module 21 and the floor side panel module 60 accordingly. The overall adjustment of parts is less, and more common parts can be used, which improves the sharing rate of parts and greatly reduces the manufacturing cost of the lower body.
[0032] In specific applications, such as Figure 2 As shown, a cabin cross beam 40 is provided between the cabin module 10 and the battery carrying module 20. The cabin cross beam 40 is used to connect the first front floor 22, the second front floor 23 and the central channel module 21 to the cabin module 10. The connection of the cabin cross beam 40 can improve the stability of the connection of the battery carrying module 20.
[0033] In a specific implementation, in order to lighten the lower body, the first front floor 22 and the second front floor 23 are both aluminum alloy stampings, and the first sill beam 24, the second sill beam 25, and the central channel module 21 are all formed steel parts. The mass and structural strength of the lower body affect the performance of the entire vehicle. In the art, most people pursue a lightweight and high-strength lower body structure. In this embodiment, through the steel-aluminum hybrid method and the overall connection structure, the entire lower body is light and has a high structural strength to improve the performance of the entire vehicle.
[0034] It can be understood that the first front floor 22 and the second front floor 23 are used to cover the entire battery pack 90 and realize the storage and installation of the battery pack 90. They are made of aluminum alloy, which makes the overall part lower in mass. Formed steel is used around the first front floor 22 and the second front floor 23 (i.e., the central channel and the first and second sill beams 24 and 25) to improve the overall structural strength. The use of this steel-aluminum hybrid structure can effectively ensure the collision strength and provide sufficient lower body rigidity while meeting the spatial layout requirements of the battery pack 90 box.
[0035] In the specific configuration, the first front floor 22 and the second front floor 23 are both provided with a front seat cross beam 26. The connection of the seat cross beams makes the overall structural strength higher and the bearing capacity stronger.
[0036] like Figure 1As shown, the front seat cross beam 26 includes a front seat front cross beam 261 and a front seat rear cross beam 262, which are arranged at intervals, and the front seat front cross beam 261 includes two sections, one section is arranged on the first front floor 22, and the other section is arranged on the second front floor 23, and both ends of the two sections of the cross beam are connected to the central channel and the threshold beams on each side. That is, the section located on the first front floor 22 is connected to the central channel module 21 and the first threshold beam 24, and the section located on the second front floor 23 is connected to the central channel module 21 and the second threshold beam 25. Similarly, the front seat rear cross beam 262 also adopts the same connection method, and is arranged between the central channel module 21 and the first threshold beam 24 and the second threshold beam 25, forming an overall "sun"-shaped structure. Such a structure can ensure the overall structural strength, avoid the use of the traditional lower body longitudinal beam structure, and reduce the mass of the entire lower body. This lower body design reduces the traditional longitudinal beam structure, providing more space for battery layout. However, due to the use of ultra-high-strength steel and the design optimization of the threshold beam structure, its overall strength is improved, and it achieves higher collision scores in head-on collision, side collision, and column collision of the whole vehicle. Specifically, due to the extensive use of ultra-high-strength steel, compared with traditional steel, it can reduce and thin the input of parts, and the contribution to lightweighting is obvious. Compared with traditional steel floors, aluminum floors have a lower density and also share lightweighting. Overall, it is estimated that the front floor part loses about 10.3kg, the rear floor part loses about 4.8kg, and the lower body as a whole loses about 15kg, with a weight reduction ratio of about 8.5%.
[0037] In specific applications, the front seat front cross beam 261 and the front seat rear cross beam 262 are both structural steel components, and both ends are connected to the central channel module 21 and the door sill beam, which enhances the overall structural strength and can provide effective support for the first front floor 22 and the second front floor 23.
[0038] According to the embodiment provided by the present invention, there is a first gap between the first threshold beam 24 and the main body of the battery pack 90 in the installation space, and there is a second gap between the second threshold beam 25 and the main body of the battery pack 90 in the installation space. The difference between new energy vehicles and traditional vehicles is that new energy vehicles need to carry more battery packs 90, which requires an effective space and a bearing structure for storing the battery pack 90. In this embodiment, by forming an installation space for the battery pack 90 in a structure composed of two threshold beams and two front floors, the first gap and the second gap can provide an effective collision buffer space for battery safety, thereby improving the overall safety performance.
[0039] It can be understood that after the battery pack 90 is installed in the installation space, if a collision occurs during the operation of the vehicle, collision protection can be achieved through the gap, avoiding direct contact with the battery after the collision, causing impact on the side of the battery, and improving the overall safety performance.
[0040] On the other hand, the provision of the first gap and the second gap can achieve effective release of heat in the installation space, ensuring that the entire battery pack 90 can have an efficient operating environment.
[0041] In specific settings, the minimum values of the first gap and the second gap are substantially equal, and the minimum values of the first gap and the second gap are both greater than or equal to 60 mm. The first sill beam 24 and the second sill beam 25 are formed structural steel, and their surfaces have concave and convex formed surfaces. In this embodiment, by limiting the minimum value of the gap, a safe collision gap is provided between the battery pack 90 and the first sill beam 24 and the second sill beam 25 after installation, thereby protecting the battery pack 90 and improving the safety of the entire vehicle.
[0042] According to an embodiment provided by the present invention, a groove structure is formed in the length direction of the first front floor 22 and the length direction of the second front floor 23. The first front floor 22 needs to cover the entire installation space and also needs to bear the load of the upper space of the vehicle body. In this embodiment, the groove structure can improve the overall structural strength and also achieve efficient heat dissipation of the installation space.
[0043] It is understandable that the first front floor 22 and the second front floor 23 are aluminum alloy stampings, and the groove structure formed on the two can improve the structural strength of the entire plate body, that is, the first front floor 22 and the second front floor 23 are formed into a wavy plate body structure through the grooves. Based on this plate body structure, the bending stiffness of the cross section can be increased, making it more difficult for the plate body to deform significantly when bending, thereby improving the bending strength and bearing capacity of the structure, and having a higher bearing capacity while having a lower mass. On the other hand, the groove structure increases the area of the installation space in contact with it, thereby achieving effective heat dissipation in the installation space.
[0044] According to an embodiment provided by the present invention, there is a third gap between the first front floor 22 and the top surface of the battery pack 90 in the installation space, and there is a fourth gap between the second front floor 23 and the top surface of the battery pack 90 in the installation space. The battery pack 90 is installed in the installation space, and the battery pack 90 is easily damaged and burned in a collision. In this embodiment, the first front floor 22 and the second front floor 23 maintain the first third gap and the third gap with the top of the battery pack 90. The setting of the gap can achieve protection for the battery pack 90, thereby improving the overall safety performance.
[0045] It is understandable that the battery pack 90 is easily damaged in the event of a collision or external force, and once the battery pack 90 is damaged, it may cause a rapid rise in temperature, thereby causing a fire accident. In this embodiment, the setting of the gap can prevent direct contact with the battery pack 90 during a collision, thereby improving the overall safety performance.
[0046] In specific settings, the minimum values of the third gap and the fourth gap are both greater than or equal to 10 mm. By limiting the gaps, the overall safety and the overall heat dissipation capacity can be improved.
[0047] It can be understood that the first front floor 22 and the second front floor 23 are both constructed as a corrugated plate structure with a groove structure, which enables the groove structure on the first front floor 22 and the second front floor 23 to continuously dissipate heat as a heat dissipation channel, thereby improving the heat dissipation efficiency and maintaining a relatively stable environmental state in the installation space.
[0048] That is, a gap of more than 10 mm is designed between the upper cover of the battery pack 90 and the first front floor 22 and the second front floor 23 above, which can ensure air flow during the driving of the car, dissipate heat from the battery pack 90, and ensure that there is no friction noise between parts in the overall state of the car. A gap of more than 60 mm is designed between the lower shell of the battery pack 90 and the surrounding parts, so as to ensure that if a collision occurs, the deformation of the lower body will not immediately squeeze the battery pack 90, providing an effective transition safety space.
[0049] According to an embodiment provided by the present invention, a plurality of first bolt fixing structures are provided on the first sill beam 24 and the second sill beam 25, a connection fixing module 70 is connected to the rear floor frame module 30, a plurality of second bolt fixing structures are provided on the connection fixing module 70, and the first bolt fixing structure and the second bolt fixing structure cooperate to fix the battery pack 90. In different new energy vehicle models, the size and specifications of the battery pack 90 are different. In this embodiment, the first bolt fixing structure and the second bolt fixing structure are provided to match the battery pack 90 of different specifications and sizes.
[0050] It is understandable that the plurality of first bolt fixing structures and the plurality of second bolt fixing structures can form a combination of size specifications, so as to be able to cope with battery packs 90 of different structural sizes. Specifically, the first bolt fixing structure and the second bolt fixing structure include bolt holes, and the plurality of bolt holes can cope with the fixing requirements of battery packs 90 of different structural sizes.
[0051] According to an embodiment of the present invention, the rear portion of the rear floor frame module 30 has a hollow structure 31, and a spare tire basin 80 is bolted inside the hollow structure 31, and the spare tire basin 80 is made of a composite material. In this embodiment, the spare tire basin 80 made of a composite material by bolting and gluing is simple in design and process, and has a significant lightweight effect compared to the traditional welded steel spare tire basin 80.
[0052] Specifically, the spare tire basin 80 is fastened by a combination of structural adhesive and bolt fixing processes, thereby ensuring the sealing of the connection and the structural strength after the overall connection.
[0053] Through the description of the above embodiments, the technicians in this field can clearly understand that each embodiment can be adjusted for only a few parts to achieve the coordination of different models, and the common rate of parts between different models is high, which can reduce the overall manufacturing cost. Further, the lower body of the steel, aluminum and composite material hybrid structure is adopted to ensure sufficient rigidity and improve the lightweight level of the lower body, and the connection between the first front floor 22, the second front floor 23, and the rear floor frame module 30 adopts the structural adhesive + SPR self-piercing riveting process, which can not only effectively prevent corrosion between steel and aluminum, but also can double guarantee the fixing strength between the two parts through the mechanical connection of SPR and the bonding of structural adhesive. In order to solve the problem of low strength caused by the aluminum floor, the central channel and the threshold beam of hot-formed steel are designed around the floor, so as to balance the overall strength of the lower body. Further, the composite spare tire basin 80 adopts the structural adhesive and bolt fixing process, and the adhesive can not only ensure sufficient sealing performance, but also assist the bolts to improve the fixing strength of the two parts. Furthermore, the conventional vehicle body is designed with a longitudinal beam structure under the front floor, which is used to connect the front longitudinal beam of the front cabin assembly and the rear longitudinal beam of the rear floor assembly. In order to provide the maximum space for the battery pack 90, the present invention is only designed with a (ultra-high-strength hot-formed steel) threshold beam structure on the outermost side, which fully guarantees the collision performance of the lower body and ensures the safety of passengers. The lower shell of the battery pack 90 is made of very thick aluminum, and the battery pack 90 is rigidly connected to the lower body with bolts. The shell of the battery pack 90 can indirectly strengthen the lower body and improve the collision performance for a second time.
[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A lower body platform of a new energy vehicle, characterized in that: It includes a cabin module, a battery carrying module and a rear floor frame module connected in sequence; A rear floor front cross beam module is provided between the battery carrying module and the floor frame module, and the rear floor front cross beam module is used for corresponding adjustment when the wheelbase direction is adjusted; The rear floor frame module is connected to floor side panel modules on both sides in the width direction; the battery carrying module includes a central channel module, a first front floor and a second front floor, the first front floor and the second front floor are respectively connected to both sides in the width direction of the central channel module, one side of the edge of the first front floor is connected to a first threshold beam, and one side of the edge of the second front floor is connected to a second threshold beam, so that the first front floor, the second front floor, the first threshold beam and the second threshold beam cooperate to form an installation space for installing a battery pack, and the central channel module and the floor side panel module are used to be adjusted accordingly when the wheelbase is adjusted.
2. The lower body platform of the new energy vehicle according to claim 1, characterized in that: A first gap is defined between the first threshold beam and the battery pack body in the installation space, and a second gap is defined between the second threshold beam and the battery pack body in the installation space.
3. The lower body platform of the new energy vehicle according to claim 2, characterized in that: The minimum values of the first gap and the second gap are both greater than or equal to 60 mm.
4. The lower body platform of the new energy vehicle according to claim 1, characterized in that: A groove structure is formed in the length direction of the first front floor panel and the length direction of the second front floor panel.
5. The lower body platform of the new energy vehicle according to claim 4, characterized in that: A third gap is defined between the first front floor and the top surface of the battery pack body in the installation space, and a fourth gap is defined between the second front floor and the top surface of the battery pack body in the installation space.
6. The lower body platform of the new energy vehicle according to claim 5, characterized in that: The minimum values of the third gap and the fourth gap are both greater than or equal to 10 mm.
7. The lower body platform of the new energy vehicle according to claim 1, characterized in that: Front seat cross beams are disposed on the first front floor and the second front floor.
8. The lower body platform of the new energy vehicle according to claim 1, characterized in that: The first front floor and the second front floor are both aluminum alloy stamping parts, and the first sill beam, the second sill beam, and the central channel module are all formed steel parts.
9. The lower body platform of the new energy vehicle according to claim 1, characterized in that: The first threshold beam and the second threshold beam are provided with a plurality of first bolt fixing structures, the rear floor frame module is connected with a connecting and fixing module, the connecting and fixing module is provided with a plurality of second bolt fixing structures, and the first bolt fixing structures cooperate with the second bolt fixing structures to fix the battery pack.
10. The lower body platform of the new energy vehicle according to claim 1, characterized in that: The tail of the rear floor frame module has a hollow structure, a spare tire basin is connected to the hollow structure by bolts, and the spare tire basin is made of composite material.