An electric vehicle front floor assembly

Abstract

This invention provides a front floor assembly for an electric vehicle, comprising: a front floor; side beams, with side beams provided on both sides of the front floor; reinforcing members, with reinforcing members provided on the side beams; a connecting assembly and a battery pack, with both sides of the battery pack connected to the two side beams respectively via the connecting assembly; each side beam includes: a floor fitting portion, the shape of which is adapted to the side shape of the front floor and fixedly connected to the side of the front floor. Through the design of replaceable and adjustable connecting assemblies, the same front floor assembly can accommodate various battery packs with different structures, sizes, or locking methods, significantly improving the versatility of the vehicle body structure, and is particularly suitable for the multi-model, multi-battery pack configuration requirements under battery swapping mode.

Description

Technical Field

[0001] This invention relates to the technical field of electric vehicles, and particularly to a front floor assembly for an electric vehicle. Background Technology

[0002] Currently, battery swapping is gaining an increasingly larger share of the electric vehicle market. However, the battery packs and locking structures used by different battery swapping operators vary significantly, and different battery pack configurations require different vehicle body structures. The front floor assembly is the vehicle body structure most closely related to the battery pack. This results in multiple front floor assembly structures matching multiple battery packs, directly leading to high vehicle costs and preventing the sharing of production tooling resources, thus causing resource waste.

[0003] While a single front floor welding assembly structure meets strength design requirements, it is difficult to be compatible with multiple battery pack configurations. This necessitates the use of multiple welding body structures to match the various battery pack configurations. Consequently, the development costs for parts molds and welding tooling, as well as the overall vehicle cost, are high. Welding production cycle is slow, throughput is poor, and production line interference (such as gun collisions) is prone to occur. Furthermore, the subsequent maintenance costs are high. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide an electric vehicle front floor assembly that can be used in multiple battery swapping models while meeting the requirements of charging vehicle models, thereby reducing the development costs of parts molds, welding tooling and the overall vehicle cost, and improving parts utilization, welding production cycle and production line throughput.

[0005] The invention provides the following technical solution: a front floor assembly for an electric vehicle, comprising: Front floor; Side beams are provided on both sides of the front floor; The reinforcing member is provided on the side beam; A connecting assembly and a battery pack, wherein both sides of the battery pack are respectively connected to the two side beams via the connecting assembly; The side beam includes: The flooring mating part is shaped to match the side shape of the front floor and is fixedly connected to the side of the front floor. A connecting part is connected to the floor fitting part, a reinforcing member is disposed on the connecting part, and the connecting part is connected to the battery pack through the connecting assembly.

[0006] Furthermore, the battery pack includes: A battery module, and connecting beams provided on both sides of the battery module.

[0007] Furthermore, the connection component includes: The connecting part has multiple mounting holes. The connecting beam has a plurality of second connecting holes corresponding to the mounting holes; The connection between the connecting part and the battery pack is achieved by passing the bolt end through the second connecting hole and the mounting hole in sequence and then screwing in the fixing nut.

[0008] Furthermore, the connection component includes: The connecting part has a plurality of square-shaped locking holes. The connecting beam is provided with a plurality of T-shaped locks corresponding to the locking holes; the T-shaped locks are locked in place with the locking holes to connect the connecting part to the battery pack. A first positioning structure is provided between the connecting part and the connecting beam.

[0009] Furthermore, the connection component also includes: The first bracket is provided on the side of the connecting part near the connecting beam at the locking hole; the first bracket has a through hole in the middle, and the through hole communicates with the locking hole.

[0010] Furthermore, the first positioning structure includes: The first positioning hole is provided on the connecting part; The positioning post is provided on the connecting beam and is inserted into the first positioning hole to achieve positioning.

[0011] Furthermore, the connection component includes: The second bracket is connected to the connecting part, and the second bracket is connected to the connecting beam; The second positioning structure is provided between the second bracket and the connecting beam.

[0012] Furthermore, the second support includes: A square portion, which is connected to the connecting portion; The trapezoidal portion is connected to the square portion and is also connected to the connecting beam.

[0013] Furthermore, the second positioning structure includes: The second positioning hole is provided on the trapezoidal portion; The positioning post is provided on the connecting beam and is inserted into the second positioning hole to achieve positioning.

[0014] Furthermore, the shape of the reinforcing member is adapted to the shape of the inner side of the connecting part, and is fixedly attached to the inner side of the connecting part.

[0015] The beneficial effects of this invention are: With its replaceable and adjustable connection components, the same front floor assembly can be adapted to a variety of battery packs with different structures, sizes or locking methods, significantly improving the versatility of the vehicle structure, and is especially suitable for the multi-model and multi-battery pack configuration requirements under the battery swapping mode.

[0016] By adopting a standardized front floor welding assembly structure, the development investment in special molds and welding tooling caused by differences in battery packs is reduced, thereby lowering the cost of parts mold opening and the overall vehicle manufacturing cost, while improving the utilization rate of parts. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention.

[0018] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of Embodiment 1 of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of a side beam and a reinforcing member separated in an embodiment of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of Embodiment 2 of the present invention.

[0021] Figure 5 This is a schematic diagram of the exploded three-dimensional structure of Embodiment 2 of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of Embodiment 3 of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the connection between the side beam and the first support in Embodiment 3 of the present invention.

[0024] Figure 8 This is a schematic diagram of the exploded three-dimensional structure of Embodiment 3 of the present invention.

[0025] Figure 9 This is a three-dimensional structural diagram of Embodiment 4 of the present invention.

[0026] Figure 10 This is a schematic diagram of the exploded three-dimensional structure of Embodiment 4 of the present invention.

[0027] Figure 11 This is a three-dimensional structural diagram of the connection between the second support and the connecting beam in Embodiment 4 of the present invention.

[0028] The labels in the attached diagram are as follows: 1-Front floor, 2-Side beam, 21-Floor fitting part, 211-First vertical fitting part, 212-Inclined fitting part, 213-Second vertical fitting part, 22-Connecting part, 221-Recessed part, 222-Horizontal mounting part, 223-Positioning part, 224-First connecting hole, 3-Reinforcing member, 31-Vertical part, 32-Horizontal part, 4-Battery pack, 41-Battery module, 42-Connecting beam, 5-Connecting assembly, 51-Mounting hole 52-Second connecting hole, 53-First bolt, 54-Fixing nut, 55-Locking hole, 56-Protrusion, 57-Locking post, 58-T-lock, 59-First positioning hole, 510-First bracket, 5101-Third connecting hole, 5102-Through hole, 511-Second bracket, 5111-Square part, 5112-Fourth connecting hole, 5113-Trapezoidal part, 5114-Second positioning hole, 5115-Floating nut plate, 5116-Second bolt. Detailed Implementation

[0029] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Example 1: This embodiment provides a front floor 1 assembly for an electric vehicle, such as Figures 1-3 As shown, it includes: front floor 1, side beams 2, reinforcement 3, connecting assembly 5, and battery pack 4.

[0033] The front floor 1 has side beams 2 on both sides; each side beam 2 has a reinforcing member 3; the battery pack 4 is connected to the two side beams 2 on both sides by connecting components 5 respectively. In this embodiment, the side beam 2 includes: a floor-fitting part 21 and a connecting part 22; The shape of the floor mating part 21 is adapted to the side shape of the front floor 1 and is fixedly connected to the side of the front floor 1. Specifically, such as Figure 3 As shown, the floor bonding portion 21 includes a first vertical bonding portion 211; an inclined bonding portion 212 formed by extending inclinedly to the right from the lower end of the first vertical bonding portion 211; and a second vertical bonding portion 213 formed by extending vertically from the lower end of the inclined bonding portion 212; from... Figure 1 As can be seen, the first vertical fitting part 211, the inclined fitting part 212, and the second vertical fitting part 213 are all fitted with the side of the front floor 1; in this embodiment, the side beam 2 is welded to the side of the front floor 1.

[0034] The connecting part 22 is connected to the floor bonding part 21, the reinforcing member 3 is provided on the connecting part 22, and the connecting part 22 is connected to the battery pack 4 through the connecting component 5.

[0035] Specifically, such as Figure 3 As shown, the connecting part 22 includes: a recessed part 221 extending to the lower end of the second vertical fitting part 213 and having a recessed structure; a horizontal mounting part 222 extending horizontally to the left side of the lower end of the recessed part 221; and a positioning part 223 extending downward from the left end of the horizontal mounting part 222. When the battery pack 4 is installed, the positioning part 223 can prevent the battery pack 4 from moving horizontally.

[0036] The shape of the reinforcing member 3 is adapted to the shape of the inner side of the connecting part 22 and is fixedly attached to the inner side of the connecting part 22.

[0037] Specifically, such as Figure 3 As shown, the reinforcing member 3 includes a vertical part 31; a horizontal part 32 is formed by extending horizontally to the left from the lower end of the vertical part 31. The vertical part 31 is attached to the inner side of the recessed part 221, and the horizontal part 32 is attached to the upper surface of the horizontal mounting part 222. The reinforcing member 3 is used to strengthen the firmness of the side beam 2.

[0038] In this embodiment, as Figure 2 As shown, the battery pack 4 includes: a battery module 41, and connecting beams 42 disposed on both sides of the battery module 41; Specifically, the battery module 41 is square, and the side of the battery module 41 is fixedly connected to the connecting beam 42, which is composed of multiple outward protruding structures.

[0039] In this embodiment, as Figure 2 As shown, the connecting component 5 includes: a mounting hole 51 and a second connecting hole 52; The connecting part 22 has multiple mounting holes 51; Specifically, the horizontal mounting part 222 has four mounting holes 51 along its length direction. The number of mounting holes 51 can be increased or decreased according to the actual situation. The horizontal part 32 corresponds to the horizontal mounting part 222 and also has mounting holes 51 in the same number as the horizontal mounting part 222. The connecting beam 42 has a plurality of second connecting holes 52 corresponding to the mounting holes 51; Specifically, the connecting beam 42 includes four protruding structures corresponding to the number of mounting holes 51, and each protruding structure is provided with a second connecting hole 52.

[0040] The connection between the connecting part 22 and the battery pack 4 is achieved by passing the end of the first bolt 53 through the second connecting hole 52 and the mounting hole 51 in sequence and then screwing in the fixing nut 54.

[0041] Specifically, after the end of the first bolt 53 passes through the second connecting hole 52, the mounting hole 51 on the transverse mounting part 222, and the mounting hole 51 on the transverse part 32 in sequence, the fixing nut 54 is screwed into the end of the first bolt 53, thereby fixing the reinforcing member 3 to the side beam 2 and the battery pack 4 to the side beam 2, so as to realize the installation of the battery pack 4.

[0042] Example 2: like Figure 4 and Figure 5 As shown, this embodiment is largely the same as embodiment one; the differences are: the connecting component 5 and the installed battery pack 4 are different, and the installation method of the reinforcing member 3 and the side beam 2 is different.

[0043] In this embodiment, the battery module 41 of the battery pack 4 is still square, but the connecting beam 42 is different, such as... Figure 5 As shown, the connecting beam 42 is a long rectangular shape, and four protrusions 56 are formed on its upper surface. When the side beam 2 is connected to the battery pack 4, the upper surface of the protrusions 56 is in contact with the bottom side of the transverse mounting part 222.

[0044] In this embodiment, as Figure 5 As shown, the connecting component 5 includes: a locking hole 55, a T-lock 58, and a first positioning structure; The connecting part 22 has multiple square locking holes 55; Specifically, the transverse mounting part 222 has four square locking holes 55 spaced apart along its length. The length of the locking holes 55 is greater than that of the lock head of the T-lock 58, and the width is less than that of the lock head of the T-lock 58. The connecting beam 42 is provided with a plurality of T-shaped locks 58 corresponding to the locking holes 55; the T-shaped locks 58 are locked in place with the locking holes 55 to realize the connection between the connecting part 22 and the battery pack 4. Specifically, four T-shaped locks 58 are fixedly connected along the length of the connecting beam 42. The lock head of the T-shaped lock 58 passes through the lock hole 55, and then the lock head is rotated so that the width of the lock head and the lock hole 55 are perpendicular, thereby realizing the connection between the connecting part 22 and the battery pack 4.

[0045] A first positioning structure is provided between the connecting part 22 and the connecting beam 42.

[0046] In this embodiment, as Figure 5 As shown, the first positioning structure includes: a first positioning hole 59 and a positioning post 57. A first positioning hole 59 is opened on the connecting part 22; a positioning post 57 is fixedly connected to the connecting beam 42, and the positioning post 57 is inserted into the first positioning hole 59 to realize the positioning of the connecting beam 42 and the side beam 2 for installation.

[0047] In this embodiment, the installation method of the reinforcing member 3 and the side beam 2 differs in that: Each locking hole 55 of the transverse mounting part 222 is provided with a first connecting hole 224 near the four corners of the locking hole 55; the transverse part 32 of the reinforcing member 3 is also provided with a number of first connecting holes 224 corresponding to the positions on the transverse mounting part 222; by passing a bolt through the first connecting hole 224 and screwing in a nut, the connection between the reinforcing member 3 and the side beam 2 is realized.

[0048] Example 3: like Figures 6-8 As shown, this embodiment is largely the same as embodiment two, except that: in addition to the connecting component 5 in embodiment two, it also includes: a first bracket 510; and the installed battery pack 4 is different.

[0049] In this embodiment, as Figure 8 As shown, the battery pack 4 still includes a square battery module 41, while the connecting beam 42 has a flat, elongated rectangular structure. like Figure 7 and Figure 8 As shown, a first bracket 510 is provided on the side of the connecting part 22 near the connecting beam 42 at the locking hole 55; a through hole 5102 is provided in the middle of the first bracket 510, and the through hole 5102 communicates with the locking hole 55.

[0050] Specifically, the first bracket 510 is square, with a through hole 5102 in the center that is the same size and shape as the lock hole 55. The first bracket 510 has a third connecting hole 5101 at each of its four corners. After the bolt passes through the third connecting hole 5101, the first connecting hole 224 on the transverse mounting part 222, and the first connecting hole 224 on the transverse part 32 in sequence, the nut is screwed in, thereby fixing the first bracket 510 to the bottom side of the transverse mounting part 222 and fixing the transverse part 32 to the upper surface of the transverse mounting part 222. When the connecting part 22 is installed with the battery pack 4, the first bracket 510 is located between the outer shell of the T-lock 58 and the transverse mounting part 222. The first bracket 510 is used to fill the gap between the outer shell of the T-lock 58 and the transverse mounting part 222.

[0051] Example 4: like Figures 9-11 As shown, this embodiment is largely the same as embodiment two, except that: in addition to the connecting component 5 in embodiment two, a second bracket 511 is also included; the positioning structure in this embodiment is different from the positioning structure in embodiment two; and the installed battery pack 4 is different; the positioning structure in this embodiment is a second positioning structure, while the positioning structure in embodiment two is a first positioning structure. The connecting part 22 is connected to the second bracket 511, and the second bracket 511 is connected to the connecting beam 42; In this embodiment, as Figure 10 and Figure 11 As shown, the second bracket 511 includes: a square portion 5111 and a trapezoidal portion 5113; The square part 5111 is connected to the connecting part 22; Specifically, the square part 5111 is provided with a fourth connecting hole 5112 that corresponds to the position and number of the first connecting hole 224 on the transverse mounting part 222. By passing bolts through the fourth connecting hole 5112, the first connecting hole 224 on the transverse mounting part 222, and the first connecting hole 224 on the transverse part 32 in sequence, and screwing in nuts, the square part 5111 is connected to the transverse mounting part 222, and the transverse part 32 is connected to the transverse mounting part 222.

[0052] The trapezoidal part 5113 is connected to the square part 5111, and the trapezoidal part 5113 is connected to the connecting beam 42.

[0053] Specifically, the trapezoidal portion 5113 and the square portion 5111 are integrally formed, such as... Figure 11As shown, the left side of the trapezoidal portion 5113 fits into the recessed portion 221, and the left side of the trapezoidal portion 5113 has multiple threaded holes. The recessed portion 221 has mounting holes 51 corresponding to the threaded holes. By passing a bolt through the mounting hole 51 and screwing it into the threaded hole, the left side of the trapezoidal portion 5113 and the recessed portion 221 are fixedly connected. In addition, the trapezoidal portion 5113 has four connecting holes for connecting to the battery pack 4. In this embodiment, as Figure 10 As shown, the battery pack 4 includes a square battery module 41 and a flat, elongated square connecting beam 42. The connecting beam 42 has four second connecting holes 52. The second bolts 5116 pass through the second connecting holes 52 and the connecting holes on the trapezoidal part 5113 in sequence, and connect with the floating nut plate 5115, thereby fixing the battery pack 4 to the trapezoidal part 5113.

[0054] In this embodiment, the second positioning structure includes: a second positioning hole 5114 and a positioning post 57; In this embodiment, as Figure 10 and Figure 11 As shown, a second positioning hole 5114 is opened on the trapezoidal part 5113; a positioning post 57 is fixedly connected to the connecting beam 42, and the positioning post 57 is inserted into the second positioning hole 5114 to achieve positioning.

[0055] The beneficial effects of this invention are as follows: With the design of replaceable and adjustable connection components 5, the same front floor 1 assembly can be adapted to a variety of battery packs 4 with different structures, sizes or locking methods, which significantly improves the versatility of the vehicle structure, especially suitable for the configuration requirements of multiple models and multiple battery packs 4 under the battery swapping mode.

[0056] The adoption of a universal front floor 1 welding assembly structure reduces the development investment in special molds and welding tooling caused by differences in battery pack 4, lowers the cost of parts mold opening and the overall vehicle manufacturing cost, and improves the utilization rate of parts.

[0057] The standardized design allows welding production lines to share tooling and equipment, reducing changeover and debugging time, increasing production cycle time, avoiding production line interference such as gun collisions caused by structural differences, and enhancing production flexibility and throughput.

[0058] The side beam 2 is equipped with a reinforcing member 3, the shape of which fits the inner side of the connecting part 22, effectively enhancing local stiffness and overall load-bearing capacity, and ensuring structural safety and durability under various battery pack 4 installation conditions.

[0059] It offers a variety of connection component options, including bolt connection, T-lock 58 quick locking, and bracket auxiliary connection, allowing you to choose the most suitable installation method according to different battery pack types, balancing installation convenience and connection reliability.

[0060] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A front floor assembly for an electric vehicle, characterized in that, include: Front floor; Side beams are provided on both sides of the front floor; The reinforcing member is provided on the side beam; A connecting assembly and a battery pack, wherein both sides of the battery pack are respectively connected to the two side beams via the connecting assembly; The side beam includes: The flooring mating part is shaped to match the side shape of the front floor and is fixedly connected to the side of the front floor. A connecting part is connected to the floor fitting part, a reinforcing member is disposed on the connecting part, and the connecting part is connected to the battery pack through the connecting assembly.

2. The front floor assembly according to claim 1, characterized in that, The battery pack includes: A battery module, and connecting beams provided on both sides of the battery module.

3. The front floor assembly according to claim 2, characterized in that, The connection component includes: The connecting part has multiple mounting holes. The connecting beam has a plurality of second connecting holes corresponding to the mounting holes; The connection between the connecting part and the battery pack is achieved by passing the end of the first bolt through the second connecting hole and the mounting hole in sequence and then screwing in the fixing nut.

4. The front floor assembly according to claim 2, characterized in that, The connection component includes: The connecting part has a plurality of square-shaped locking holes. The connecting beam is provided with a plurality of T-shaped locks corresponding to the locking holes; the T-shaped locks are locked in place with the locking holes to connect the connecting part to the battery pack. A first positioning structure is provided between the connecting part and the connecting beam.

5. The front floor assembly according to claim 4, characterized in that, The connection component also includes: The first bracket is provided on the side of the connecting part near the connecting beam at the locking hole; the first bracket has a through hole in the middle, and the through hole communicates with the locking hole.

6. The front floor assembly according to claim 4 or 5, characterized in that, The first positioning structure includes: The first positioning hole is provided on the connecting part; The positioning post is provided on the connecting beam and is inserted into the first positioning hole to achieve positioning.

7. The front floor assembly according to claim 2, characterized in that, The connection component includes: The second bracket is connected to the connecting part, and the second bracket is connected to the connecting beam; The second positioning structure is provided between the second bracket and the connecting beam.

8. The front floor assembly according to claim 7, characterized in that, The second support includes: A square portion, which is connected to the connecting portion; The trapezoidal portion is connected to the square portion and is also connected to the connecting beam.

9. The front floor assembly according to claim 8, characterized in that, The second positioning structure includes: The second positioning hole is provided on the trapezoidal portion; The positioning post is provided on the connecting beam and is inserted into the second positioning hole to achieve positioning.

10. The front floor assembly according to claim 1, characterized in that, The shape of the reinforcing member is adapted to the shape of the inner side of the connecting part, and is fixedly attached to the inner side of the connecting part.

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