Vehicle floor assemblies and vehicles having them

Abstract

This utility model provides a vehicle floor assembly and a vehicle having the same. The vehicle floor assembly includes: a base plate; a mounting beam located on top of the base plate and extending along a first direction, the mounting beam having a first connecting portion and a second connecting portion spaced apart along a second direction, both the first connecting portion and the second connecting portion being welded to the base plate, wherein a preset angle exists between the first direction and the second direction; and a battery pack including multiple batteries arranged along the second direction, each battery having at least one terminal post on its side facing the base plate, wherein the minimum distance between the first connecting portion and the terminal post in the second direction is between 5mm and 150mm. The technical solution of this application effectively solves the problem in related technologies where the unreasonable distance between the terminal post and the welding position easily affects battery performance.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and more specifically, to a vehicle floor assembly and a vehicle having the same. Background Technology

[0002] Currently, new energy vehicles are equipped with batteries that provide energy to the vehicles. To improve space utilization, the battery pack is mounted directly on the vehicle floor.

[0003] In related technologies, the distance between the welding point of the battery terminal and the crossbeam on the vehicle floor is often too large or too small, which can easily affect the battery performance. Utility Model Content

[0004] The main objective of this invention is to provide a vehicle floor assembly and a vehicle having the same, in order to solve the problem in related technologies where the distance between the terminal post and the welding position is unreasonable and thus easily affects battery performance.

[0005] To achieve the above objectives, according to one aspect of the present invention, a vehicle floor assembly is provided, comprising: a base plate; a mounting beam located on top of the base plate and extending along a first direction, the mounting beam having a first connecting portion and a second connecting portion spaced apart along a second direction, both the first connecting portion and the second connecting portion being welded to the base plate, wherein a preset angle is formed between the first direction and the second direction; a battery pack comprising a plurality of batteries arranged along the second direction, each battery having at least one terminal post on one side facing the base plate, wherein the minimum distance between the first connecting portion and the terminal post in the second direction is between 5 mm and 150 mm.

[0006] According to another aspect of the present invention, a vehicle is provided, including a vehicle floor assembly, wherein the vehicle floor assembly is the vehicle floor assembly described above.

[0007] Applying the technical solution of this utility model, a mounting beam is disposed on the top of the substrate and extends along a first direction. The mounting beam has a first connecting portion and a second connecting portion, which are spaced apart along a second direction and both are welded to the substrate. The battery pack includes multiple batteries arranged along the second direction. Each battery has at least one electrode post on its side facing the substrate. The minimum distance between the first connecting portion and the electrode post in the second direction is between 5mm and 150mm. With the above arrangement, the battery pack is located below the substrate, with at least one electrode post on each battery facing the substrate. Simultaneously, the minimum distance between the first connecting portion and the electrode post is between 5mm and 150mm, which makes the distance between the electrode post and the first connecting portion more reasonable, avoiding the welding point from affecting the electrode post and thus avoiding affecting the battery performance. Therefore, the technical solution of this application effectively solves the problem in related technologies where the unreasonable distance between the electrode post and the welding position easily affects battery performance. Attached Figure Description

[0008] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0009] Figure 1 A perspective structural schematic diagram of an embodiment of a vehicle floor assembly according to the present invention is shown;

[0010] Figure 2 It shows Figure 1 A three-dimensional structural diagram of the vehicle floor assembly from another perspective;

[0011] Figure 3 It shows Figure 1 A side view of the vehicle floor assembly;

[0012] Figure 4 It shows Figure 3 A magnified view of part A of the vehicle floor assembly;

[0013] Figure 5 It shows Figure 1 A top-view diagram of the vehicle floor assembly.

[0014] The above figures include the following reference numerals:

[0015] 10. Substrate; 20. Mounting beam; 21. First connecting part; 211. First welding point; 22. Second connecting part; 221. Second welding point; 23. Third connecting part; 24. First protrusion; 25. Second protrusion; 30. Battery pack; 31. Battery; 311. Terminal post. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0018] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0019] like Figures 1 to 5 As shown, in this embodiment, the vehicle floor assembly includes a base plate 10, a mounting beam 20, and a battery pack 30. The mounting beam 20 is located on top of the base plate 10 and extends along a first direction. The mounting beam 20 has a first connecting portion 21 and a second connecting portion 22 spaced apart along a second direction. Both the first connecting portion 21 and the second connecting portion 22 are welded to the base plate 10, wherein there is a preset angle between the first direction and the second direction. The battery pack 30 includes a plurality of batteries 31, which are arranged along the second direction. Each battery 31 has at least one terminal post 311 on the side facing the base plate 10. In the second direction, the minimum distance between the first connecting portion 21 and the terminal post 311 is between 5mm and 150mm.

[0020] Applying the technical solution of this embodiment, the mounting beam 20 is disposed on the top of the substrate 10 and extends along a first direction. The mounting beam 20 has a first connecting portion 21 and a second connecting portion 22, which are spaced apart along a second direction and both are welded to the substrate 10. The battery pack 30 includes a plurality of batteries 31, which are arranged along the second direction. Each battery 31 has at least one terminal post 311 on its side facing the substrate. The minimum distance between the first connecting portion 21 and the terminal post 311 in the second direction is between 5mm and 150mm. With the above arrangement, the battery pack 30 is located below the substrate 10, and each battery 31 has at least one terminal post 311 facing the substrate 10. The minimum distance between the first connecting portion 21 and the terminal post 311 is between 5mm and 150mm, which makes the distance between the terminal post 311 and the first connecting portion 21 more reasonable, avoiding the welding point from affecting the terminal post 311 and thus avoiding affecting the battery performance. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies where the distance between the electrode post and the welding position is unreasonable, which can easily affect battery performance.

[0021] It should be noted that when the minimum distance between the first connecting part 21 and the pole post 311 is less than 5mm, the distance is too tight, which may cause the first connecting part 21 to affect the pole post 311 and easily lead to damage to the pole post 311. If the distance is greater than 150mm, the overall size may be too large, occupying too much space.

[0022] Specifically, in this embodiment, the mounting beam 20 is used to mount the seat.

[0023] In this embodiment, the minimum distance between the first connecting part 21 and the pole post 311 is 50mm. In other embodiments, the minimum distance between the first connecting part 21 and the pole post 311 can also be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, 145mm, 150mm, or other values.

[0024] like Figures 1 to 4 As shown, in this embodiment, the minimum distance between the second connecting part 22 and the terminal post 311 is between 5mm and 150mm. This arrangement avoids the distance between the second connecting part 22 and the terminal post 311 being too large or too small, thereby ensuring the safe use of the battery 31.

[0025] In this embodiment, the minimum distance between the second connecting part 22 and the pole post 311 is 50mm. In other embodiments, the minimum distance between the second connecting part 22 and the pole post 311 can also be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, 145mm, 150mm, or other values.

[0026] like Figures 1 to 4 As shown, in this embodiment, the projection of at least one terminal post 311 within the substrate 10 is located within the projection surface of the mounting beam 20 within the substrate 10. The aforementioned mounting beam 20 can act as a physical barrier for the terminal post 311, effectively preventing the terminal post 311 from being directly impacted even in the event of a vehicle collision, thereby protecting the battery 31 from damage.

[0027] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, in this embodiment, the mounting beam 20 further includes a third connecting portion 23, which is located between the first connecting portion 21 and the second connecting portion 22. The third connecting portion 23 is welded to the base plate 10, and the minimum distance between the third connecting portion 23 and the pole post 311 is between 5mm and 300mm. The aforementioned third connecting portion 23 can optimize the structural strength and stability of the mounting beam 20. That is, the third connecting portion 23 is also welded to the base plate 10.

[0028] Specifically, in this embodiment, the minimum distance between the third connecting part 23 and the pole post 311 is 60mm.

[0029] In embodiments not shown in the figures, the minimum distance between the third connecting part 23 and the pole post 311 can also be 5mm, 15mm, 25mm, 35mm, 45mm, 55mm, 65mm, 75mm, 85mm, 95mm, 105mm, 115mm, 125mm, 135mm, 145mm, 155mm, 165mm, 175mm, 185mm, 195mm, 205mm, 215mm, 225mm, 235mm, 245mm, 255mm, 265mm, 275mm, 285mm, 295mm, 300mm, or other dimensions.

[0030] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, in this embodiment, the mounting beam 20 includes a first protrusion 24 and a second protrusion 25. A first connecting portion 21 and a third connecting portion 23 are located on both sides of the first protrusion 24, and a third connecting portion 23 and a second connecting portion 22 are located on both sides of the second protrusion 25. The aforementioned first protrusion 24 and second protrusion 25 can increase the rigidity of the mounting beam 20. At the same time, by adjusting the position and shape of the first protrusion 24 and the second protrusion 25, the relative position and pressure distribution between the battery 31 and the mounting beam 20 are optimized, thereby improving the installation stability of the battery 31.

[0031] Specifically, in this embodiment, each battery 31 has two pole posts 311 on the side facing the substrate 10, and a battery 31 is disposed directly below the mounting beam 20. The two pole posts 311 on the battery 31 directly below the mounting beam 20 correspond to the first protrusion 24 and the second protrusion 25, respectively.

[0032] The first connecting portion 21 corresponds to the gap between two batteries 31 arranged adjacent to each other along the second direction. Similarly, the second connecting portion 22 corresponds to the gap between two batteries 31 arranged adjacent to each other along the second direction.

[0033] That is, in the second direction, the minimum distance between the first connecting part 21 and the gap between the two batteries 31 arranged adjacent to each other in the second direction is between 0 and 10 mm, and the minimum distance between the second connecting part 22 and the gap between the two batteries 31 arranged adjacent to each other in the second direction is between 0 and 10 mm.

[0034] Specifically, in this embodiment, the minimum distance between the second connecting portion 22 and the gap between the two batteries 31 arranged adjacent to each other along the second direction is 5mm.

[0035] In this embodiment, the gap between two adjacent batteries 31 arranged along the second direction is located outside the first welding point 211 and outside the second welding point 221.

[0036] In this embodiment, the width of the first protrusion 24 along the second direction is greater than the width of the second protrusion 25 along the second direction. A first cavity is formed between the first protrusion 24 and the substrate 10, and a second cavity is formed between the second protrusion 25 and the substrate 10.

[0037] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5As shown, in this embodiment, the projection of at least one pole post 311 within the substrate 10 is located within the projection surface of the first protrusion 24 within the substrate 10, and the projection of at least one pole post 311 within the substrate 10 is located within the projection surface of the second protrusion 25 within the substrate 10. By placing the projection of the pole post 311 within the projection range of the first protrusion 24 of the mounting beam 20, the first protrusion 24 provides additional protection for the pole post 311, preventing it from being directly impacted when the vehicle is subjected to an impact.

[0038] like Figure 1 and Figure 2 As shown, in this embodiment, there are multiple battery packs 30, which are arranged sequentially along a first direction. By rationally arranging the battery packs 30, the space utilization of the battery packs 30 is optimized, and the orderly arrangement of the battery packs 30 improves the structural stability and energy density of the multiple battery packs 30.

[0039] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, in this embodiment, the first connecting portion 21 is provided with a plurality of first welding points 211, and the distance between any two adjacent first welding points 211 is between 20mm and 200mm. By controlling the distance between the first welding points 211, the connection strength and stability between the battery 31 and the substrate 10 are optimized, while reducing the concentration of thermal stress caused by welding and extending the service life of the battery 31.

[0040] In this embodiment, the distance between any two adjacent first welding points 211 is 100mm.

[0041] In embodiments not shown in the figures, the distance between any two adjacent first welding points 211 can also be 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 105mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, 145mm, 150mm, 155mm, 160mm, 165mm, 170mm, 175mm, 180mm, 185mm, 190mm, 195mm, 200mm, or other dimensions.

[0042] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5As shown, in this embodiment, the second connecting portion 22 is provided with a plurality of second welding points 221, and the distance between any two adjacent second welding points 221 is between 20mm and 200mm. By controlling the distance between the second welding points 221, the connection strength and stability between the battery 31 and the substrate 10 are optimized, while reducing the concentration of thermal stress caused by welding and extending the service life of the battery 31.

[0043] In this embodiment, the distance between any two adjacent second welding points 221 is 100mm.

[0044] In embodiments not shown in the figures, the distance between any two adjacent second welding points 221 can also be 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 105mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, 145mm, 150mm, 155mm, 160mm, 165mm, 170mm, 175mm, 180mm, 185mm, 190mm, 195mm, 200mm, or other dimensions.

[0045] like Figure 3 and Figure 4 As shown, in this embodiment, the distance between the electrode post 311 and the substrate 10 in the thickness direction of the substrate 10 is between 3mm and 35mm. The above-mentioned arrangement can prevent the electrode post 311 from contacting the substrate 10, thereby preventing collisions between the substrate 10 and the electrode post 311. At the same time, it can prevent the distance between the electrode post 311 and the substrate 10 from being too large, thereby preventing the battery 31 from occupying too much space.

[0046] In this embodiment, the distance between the pole post 311 and the substrate 10 is 20 mm.

[0047] Of course, the above distances can also be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm, or other sizes.

[0048] like Figures 1 to 4As shown, in this embodiment, each battery 31 has an explosion-proof valve, which is located on the side of the battery 31 facing the substrate 10, or on the side of the battery 31 away from the substrate 10. The explosion-proof valve makes the battery 31 safer to use.

[0049] According to another aspect of this application, a vehicle is provided, the vehicle of this embodiment including a vehicle floor assembly, the vehicle floor assembly being the aforementioned vehicle floor assembly. The aforementioned vehicle floor assembly enables a more rational battery layout, not only improving space utilization but also enhancing battery safety and stability. Therefore, a vehicle having the aforementioned vehicle floor assembly also possesses the aforementioned advantages.

[0050] The following description is provided to enable those skilled in the art to fully understand this application and is not intended to limit the subject matter of the claims.

[0051] [Battery]

[0052] The battery in this application is a secondary battery, also known as a rechargeable battery or storage battery, which refers to a battery that can be used again after being discharged by recharging to activate the active materials.

[0053] Typically, a secondary battery consists of a battery cell, an electrolyte, and a casing. The battery cell includes a positive electrode, a negative electrode, and a separator. The battery cell and electrolyte are assembled inside the casing. During charging and discharging, active ions (such as lithium ions) move back and forth between the positive and negative electrodes, inserting and releasing. The separator, located between the positive and negative electrodes, primarily prevents short circuits while allowing active ions to pass through. The electrolyte, situated between the positive and negative electrodes, mainly serves to conduct active ions.

[0054] As an example, the preparation process of a secondary battery is as follows: the positive electrode, separator, and negative electrode are stacked in sequence, with the separator acting as a separator between the positive and negative electrodes. Then, the electrodes are wound or stacked to obtain a cell. The cell is placed in a casing, dried, and then injected with electrolyte. After vacuum sealing, settling, formation, and shaping, a secondary battery is obtained.

[0055] [Positive electrode tablets]

[0056] A positive electrode typically includes a positive current collector and a positive electrode film layer disposed on at least one side of the positive current collector. The positive electrode film layer includes a positive electrode active material, which can be any existing publicly disclosed positive electrode active material or a positive electrode active material optimized based on existing materials.

[0057] This application does not impose any particular restrictions on the type of positive electrode active material for the positive electrode sheet. As an example, the positive electrode active materials in this application include lithium-containing transition metal oxides (e.g., LiCoO2), phosphides (e.g., LiFePO4), or lithium intercalation compounds (e.g., positive electrode materials for binary lithium batteries such as lithium cobalt oxide and lithium nickel oxide, or positive electrode materials for ternary lithium batteries such as lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminum oxide).

[0058] In some embodiments, the positive electrode sheet can be prepared by dispersing the above-mentioned components for preparing the positive electrode sheet, such as positive electrode active material, conductive agent, binder and any other components, in a solvent (e.g., N-methylpyrrolidone) to form a positive electrode slurry; coating the positive electrode slurry onto the positive electrode current collector, and then obtaining the positive electrode sheet after drying, rolling, cutting and other processes.

[0059] In this application, the binder is used to improve the adhesion between positive electrode active material particles and the adhesion between the positive electrode active material and the current collector. This application does not impose any particular limitation on the type of binder for the positive electrode sheet; the binder can be any conventional choice in the battery industry. Specifically, the binder can be at least one of polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), polyvinyl alcohol (PVA), styrene-butadiene rubber (SBR), polyacrylonitrile (PAN), polyimide (PI), polyacrylic acid (PAA), polyacrylate, polyolefin, sodium carboxymethyl cellulose (CMC), or sodium alginate.

[0060] This application does not impose any particular restrictions on the positive electrode current collector, as long as it is conductive and will not cause adverse chemical changes in the battery, and can be made of, for example: stainless steel, aluminum, nickel, titanium, sintered carbon; or aluminum or stainless steel that has been surface treated with one of carbon, nickel, titanium, silver, etc.

[0061] [Negative electrode plate]

[0062] The negative electrode includes a negative electrode current collector and a negative electrode active material layer disposed on at least one side of the negative electrode current collector. The negative electrode active material layer comprises a silicon-based material. This application does not specifically limit the type of silicon-based material; the silicon-based material can be a silicon-carbon material and / or a silicon-oxygen material. As an example, the silicon-based material can be one or more of silicon-carbon composite negative electrode materials, silicon suboxide negative electrode materials, modified silicon suboxide negative electrode materials, and nano-silicon materials. The negative electrode active material in the negative electrode active material layer may also optionally include one or more of artificial graphite, natural graphite, and hard carbon.

[0063] In some embodiments, the negative electrode sheet can be prepared by dispersing the components used to prepare the negative electrode sheet, such as the negative electrode active material, conductive agent, binder and any other components, in a solvent (e.g., water) to form a negative electrode slurry; coating the negative electrode slurry onto the negative electrode current collector, and then obtaining the negative electrode sheet after drying, rolling, cutting and other processes.

[0064] This application does not specifically limit the type of negative electrode conductive agent. In some embodiments, as an example, the negative electrode conductive agent can be one or more of conventional negative electrode conductive agents such as acetylene black and carbon nanotubes. This application does not specifically limit the type of negative electrode binder. In some embodiments, as an example, the binder can be one or more of conventional negative electrode binders such as styrene-butadiene rubber latex (SBR), polyvinylidene fluoride (PVDF), polyacrylic acid (PAA), and sodium carboxymethyl cellulose (CMC). In this application, the binder is preferably PAA, SBR, and CMC, and the mass ratio of PAA, SBR, and CMC can be (34.38-74.29):(20-59.38):(5-7.14).

[0065] This application does not specifically limit the type of negative electrode current collector. In some embodiments, as an example, the negative electrode current collector can be one of the conventional negative electrode current collectors such as copper foil.

[0066] Electrolyte

[0067] The electrolyte acts as a conductor of ions between the positive and negative electrodes. This application does not impose specific limitations on the type of electrolyte; it can be selected according to requirements. As an example, the electrolyte in this application can be any electrolyte suitable for electrochemical energy storage devices in the art. The electrolyte includes an electrolyte and a solvent; the electrolyte typically includes a lithium salt, and additives may also be added to the electrolyte.

[0068] Specifically, the lithium salt includes at least one selected from lithium hexafluorophosphate (LiPF6), lithium tetrafluoroborate (LiBF4), lithium perchlorate (LiClO4), lithium hexafluoroarsenate (LiAsF6), lithium bis(fluorosulfonyl)imide (LiFSI), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), lithium trifluoromethanesulfonate (LiTFS), lithium difluorooxalate borate (LiDFOB), lithium dioxalate borate (LiBOB), lithium difluorophosphate (LiPO2F2), lithium difluorodioxalate phosphate (LiDFOP), and lithium tetrafluorooxalate phosphate (LiTFOP). The concentration of the electrolyte in the electrolyte solution can be 0.5–5 mol / L.

[0069] Specifically, the solvent includes at least one of ethylene carbonate (EC), propylene carbonate (PC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC), dimethyl carbonate (DMC), dipropyl carbonate (DPC), methyl propyl carbonate (MPC), ethyl propyl carbonate (EPC), butyl carbonate (BC), fluoroethylene carbonate (FEC), methyl formate (MF), methyl acetate (MA), ethyl acetate (EA), propyl acetate (PA), methyl propionate (MP), ethyl propionate (EP), propyl propionate (PP), methyl butyrate (MB), ethyl butyrate (EB), 1,4-butyrolactone (GBL), sulfolane (SF), dimethyl sulfone (MSM), methyl ethyl sulfone (EMS), and diethyl sulfone (ESE).

[0070] In some implementations, as an example, the additive may be a conventional electrolyte additive such as fluoroethylene carbonate (FEC), chloroethylene carbonate (CEC), or vinylene carbonate (VC).

[0071] [Septum]

[0072] In some embodiments, the secondary battery also includes a separator. This application does not impose any particular limitation on the type of separator; any known porous separator with good chemical and mechanical stability can be selected.

[0073] In some embodiments, as an example, the diaphragm can be one of PP, PE, or PP / PF; the diaphragm can also be a structure in which a coating is formed on the surface of the base film, wherein the base film coating can be one of PP, PE, or PP / PF, and the coating can be an inorganic coating and / or an organic coating. The inorganic coating can be selected from alumina ceramic layers, osmium silicate, etc., and the organic coating can be selected from PVDF, etc.

[0074] In the description of this utility model, it should be understood that "multiple" means a quantity of two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0075] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0076] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0077] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vehicle floor assembly, characterized by, include: base(10); Mounting beam (20) is located on top of the substrate (10) and extends along a first direction. The mounting beam (20) has a first connecting portion (21) and a second connecting portion (22) spaced apart along a second direction. The first connecting portion (21) and the second connecting portion (22) are both welded to the substrate (10). There is a preset angle between the first direction and the second direction. The battery pack (30) includes a plurality of batteries (31) arranged along the second direction. Each battery (31) has at least one terminal post (311) on the side facing the substrate (10). In the second direction, the minimum distance between the first connection portion (21) and the terminal post (311) is between 5 mm and 150 mm.

2. The vehicle floor assembly of claim 1, wherein, The minimum distance between the second connecting part (22) and the pole post (311) is between 5mm and 150mm.

3. The vehicle floor assembly of claim 1, wherein, At least one of the pole posts (311) is projected within the substrate (10) within the projection surface of the mounting beam (20) within the substrate (10).

4. The vehicle floor assembly of claim 1, wherein, The mounting beam (20) further includes a third connecting part (23), which is located between the first connecting part (21) and the second connecting part (22). The third connecting part (23) is welded to the substrate (10), and the minimum distance between the third connecting part (23) and the pole post (311) is between 5mm and 300mm.

5. The vehicle floor assembly of claim 4, wherein, The mounting beam (20) includes a first protrusion (24) and a second protrusion (25), the first connecting part (21) and the third connecting part (23) are located on both sides of the first protrusion (24), and the third connecting part (23) and the second connecting part (22) are located on both sides of the second protrusion (25).

6. The vehicle floor assembly of claim 5, wherein, The projection of at least one of the pole posts (311) in the substrate (10) is located within the projection surface of the first protrusion (24) in the substrate (10), and / or the projection of at least one of the pole posts (311) in the substrate (10) is located within the projection surface of the second protrusion (25) in the substrate (10).

7. The vehicle floor assembly of any one of claims 1-6, wherein, There are multiple battery packs (30), and the multiple battery packs (30) are arranged sequentially along the first direction.

8. The vehicle floor assembly of any one of claims 1-6, wherein, The first connecting part (21) is provided with a plurality of first welding points (211), and the distance between any two adjacent first welding points (211) is between 20mm and 200mm.

9. The vehicle floor assembly of any one of claims 1-6, wherein, The second connecting part (22) is provided with a plurality of second welding points (221), and the distance between any two adjacent second welding points (221) is between 20mm and 200mm.

10. The vehicle floor assembly of any one of claims 1-6, wherein, In the thickness direction of the substrate (10), the distance between the pole post (311) and the substrate (10) is between 3mm and 35mm.

11. The vehicle floor assembly of any one of claims 1-6, wherein, Each of the batteries (31) has an explosion-proof valve located on the side of the battery (31) facing the substrate (10), or on the side of the battery (31) away from the substrate (10).

12. A vehicle comprising a vehicle floor assembly, characterized by The vehicle floor assembly is the vehicle floor assembly according to any one of claims 1 to 11.

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