Rear floor structure and vehicle having the same

Abstract

The utility model relates to rear floor technology field discloses a rear floor structure and have its carrier, rear floor structure includes: board body subassembly, the lower surface of both sides of board body subassembly's left and right direction all is equipped with longitudinal beam structure, first support, first support is along the front -back direction of longitudinal beam structure and is established, first support is connected with longitudinal beam structure, and first support is equipped with the first connecting portion of installation battery swap, second support, second support sets up on the lower surface of board body subassembly, second support is connected with board body subassembly, second support is located in the inside of first support, and second support is used for installing battery package. The utility model can accommodate battery swap and battery package simultaneously in the limited rear floor below space, need not occupy the car in -vehicle or trunk space, guarantees the neatness and the comfort of car interior space, solves the problem of insufficient space utilization in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of rear floor technology, specifically to a rear floor structure and a carrier having the same. Background Technology

[0002] In existing technologies, vehicle floors are generally designed specifically for different vehicle types. For example, the floor of a pure electric vehicle only provides mounting positions for the battery pack and charging system, while the floor of a gasoline vehicle only provides mounting positions for the fuel tank. Range-extended vehicles are divided into battery-swapping range-extended and non-battery-swapping range-extended vehicles. Battery-swapping range-extended vehicles generally only provide mounting positions for the battery, battery pack, charging system, and fuel tank, while non-battery-swapping range-extended vehicles generally only provide mounting positions for the battery pack, charging system, and fuel tank. This paper proposes a floor structure applicable to both gasoline vehicles and new energy vehicles, where new energy vehicles include pure electric vehicles, battery-swapping range-extended vehicles, or hybrid vehicles.

[0003] However, the floor structure in the existing technology CN 223174196 U includes a front compartment frame assembly, an intermediate chemical compartment assembly, and a rear floor frame assembly that are detachably connected in sequence. The battery swapping unit is located on the intermediate chemical compartment assembly, while the battery pack is located in other parts of the vehicle body assembly, resulting in an inefficient distribution of interior space. For example, the intermediate chemical compartment assembly occupies space in the middle of the vehicle body; if the battery pack is large, it will affect the layout of the passenger or storage space, failing to fully utilize the floor space to optimize the interior space structure. Utility Model Content

[0004] In view of this, the present invention provides a rear floor structure and a vehicle having the same, in order to solve the problem of insufficient space utilization in the prior art.

[0005] In a first aspect, this utility model provides a rear floor structure, comprising: a panel assembly, wherein longitudinal beam structures are provided on the lower surfaces of both sides of the panel assembly in the left and right directions; a first bracket, wherein the first bracket is arranged along the front and rear directions of the longitudinal beam structures and is connected to the longitudinal beam structures, and the first bracket is provided with a first connecting part for installing a battery swapping device; and a second bracket, wherein the second bracket is arranged on the lower surface of the panel assembly and is connected to the panel assembly, the second bracket is located inside the first bracket, and the second bracket is used to install a battery pack.

[0006] The first bracket extends forward and backward along the longitudinal beam structure, and the second bracket is located inside the first bracket. The two are staggered in the left and right directions of the plate assembly, without spatial interference. It can accommodate the battery swapping battery and battery pack in the limited space under the rear floor at the same time without occupying the passenger or trunk space, ensuring the regularity and comfort of the interior space, and solving the problem of insufficient space utilization in the existing technology.

[0007] In one alternative embodiment, the second bracket is provided with an opening facing the front side of the plate assembly, and the bottom of the second bracket is provided with a through hole for the fastener to pass through.

[0008] In one optional embodiment, the plate assembly includes: a first plate, the lower surfaces of both sides of the first plate in the left and right directions are provided with longitudinal beam structures; a second plate, the second plate is located in front of the first plate, the lower surface of the second plate is provided with a second bracket, a boss structure is formed at the connection between the first plate and the second plate, the boss structure extends along the left and right directions of the first plate or the second plate, and the boss structure is used to stop the seat.

[0009] In one optional embodiment, the second plate includes a first horizontal segment, a vertical segment, and a second horizontal segment connected in sequence. The first horizontal segment is connected to the first plate. The second bracket includes two first sides disposed opposite to each other and a second side connected between the two first sides, as well as a bottom edge connected to the lower ends of the first and second sides. The first and second sides are provided with connecting flanges, which are connected to the second horizontal segment. The second side extends toward the vertical segment and is connected to the vertical segment. A through hole is provided on the bottom edge.

[0010] In one optional embodiment, there are at least two second supports, and the bottom surface of the second horizontal section is also provided with a reinforcing support. There are at least two reinforcing supports, and each reinforcing support is disposed between each first support and each second support. The reinforcing support has a triangular structure.

[0011] In one optional embodiment, the upper surface of the first plate is provided with a first crossbeam and a third bracket. The third bracket is located behind the first crossbeam. The first crossbeam is arranged along the left and right direction of the first plate. There are at least two third brackets, which are spaced apart along the left and right direction of the first plate. The first crossbeam is provided with a second connecting part for installing a charging module, and the third bracket is provided with a third connecting part for installing a charging module.

[0012] In one optional embodiment, the rear floor structure further includes a wheel cover assembly, which includes a first wheel cover and a second wheel cover. The first wheel cover and the second wheel cover are located on the left and right sides of the first plate, respectively. One end of the first crossbeam is connected to the first wheel cover, and the other end of the first crossbeam is connected to the second wheel cover. The first wheel cover or the second wheel cover is provided with a first notch for inserting a wire connected to the charging module.

[0013] In one optional embodiment, the rear floor structure further includes a third plate, a second crossbeam, and a third crossbeam. The third plate is located behind the first plate and is connected to the first plate. The second and third crossbeams are located on the lower surface of the first plate and are both arranged along the left-right direction of the first plate. The third crossbeam is connected to both the first and third plates. Both ends of the third crossbeam are connected to the longitudinal beam structure. Both ends of the second crossbeam are connected to the longitudinal beam structure. The second and third crossbeams are provided with a fourth bracket for mounting the oil tank, and the fourth bracket is provided with a fourth connecting part for mounting the oil tank.

[0014] In one optional embodiment, the first plate is further provided with a fuel tank access port, which is located between the second and third crossbeams, and is provided with an access cover.

[0015] Secondly, this utility model also provides a vehicle, which includes the aforementioned rear floor structure.

[0016] Since the vehicle includes a rear floor structure, which has the same effect as the rear floor structure, it will not be described in detail here. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the upper surface of a rear floor structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the lower surface of a rear floor structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the front end of the upper surface of a rear floor structure according to an embodiment of the present invention; Figure 4 This is a left-side view of a rear floor structure according to an embodiment of the present utility model; Figure 5 This is a first structural schematic diagram of the front end of the lower surface of a rear floor structure according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the second structure of the front end of the lower surface of a rear floor structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the first part of the front end of the lower surface of a rear floor structure according to an embodiment of the present invention. Figure 8 This is a schematic diagram of the second part of the front end of the lower surface of a rear floor structure according to an embodiment of the present utility model. Figure 9 This is a top view of the upper surface of a rear floor structure according to an embodiment of the present utility model; Figure 10 This is a partial top view of the upper surface of a rear floor structure according to an embodiment of the present invention; Figure 11 This is a top view of the lower surface of a rear floor structure according to an embodiment of the present utility model; Figure 12 This is a top view of the lower surface of a rear floor structure according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 10. Panel assembly; 11. First panel; 12. Second panel; 121. First horizontal section; 122. Vertical section; 123. Second horizontal section; 13. Boss structure; 14. Third panel; 15. Reinforcing bracket; 20. First support; 21. First connecting part; 30. Second bracket; 31. Opening; 32. Through hole; 33. First side; 331. Connecting flange; 34. Second side; 35. Bottom edge; 40. Longitudinal beam structure; 50. First crossbeam; 51. Second connecting part; 60. Third support; 61. Third connecting part; 70. Wheel cover assembly; 71. First wheel cover; 72. Second wheel cover; 711. First gap; 80. Second crossbeam; 81. Fourth bracket; 811. Fourth connecting part; 90. Third crossbeam; 110. Inspection cover. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] 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.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0024] The rear floor structure of this application can be applied to pure electric vehicles, fuel vehicles, battery-swapping range-extended vehicles, and non-battery-swapping range-extended vehicles, and can be installed on multiple platform models.

[0025] According to relevant technologies, range-extended electric vehicles (REEVs) are generally equipped with a main battery pack and a swapping battery pack. For example, one type of electric vehicle range-extending lithium-ion power system includes a main battery pack and a swapping battery pack. The main battery pack is installed on the electric vehicle in a fixed or swapping manner, while the swapping battery pack is installed in a swapping manner. An energy manager can control the main battery pack and the swapping battery pack to supply power to the vehicle's motor individually or jointly, and can also control the swapping battery pack to replenish power to the main battery pack. Another type of electric vehicle range-extending power system has a main battery pack installed in a fixed location on the electric vehicle, and a swapping battery pack installed in a removable location. The swapping battery pack has a built-in power controller, and the main battery pack and the swapping battery pack are connected through the power controller. The swapping battery pack can output AC or DC power through the built-in power controller to replenish power to the main battery pack or supply power to other loads.

[0026] In related technologies, maintaining or replacing the intermediate chemical compartment assembly where the battery swapping device is installed requires disassembling the connection between the intermediate chemical compartment assembly and the front compartment frame assembly and the rear floor frame assembly. This operation is complex, involving the disassembly and installation of multiple components, which increases maintenance time and costs. Moreover, the operation may damage other components, affecting the overall stability of the vehicle body structure.

[0027] It should be noted that the rear floor structure of this application is installed in the rear area of ​​the vehicle body. The upper surface of the rear floor structure directly corresponds to the area under the rear seats and the bottom area of ​​the trunk, and is used to support the weight of the rear passengers, fix the rear seats, and bear the storage load of the trunk. The lower surface of the rear floor structure faces the ground and is used to install components such as the rear suspension system, exhaust system (for fuel vehicles), and battery device.

[0028] It should be noted that the position of the rear floor structure in the vehicle is fixed. Therefore, the left-right direction of the rear floor structure is the same as the left-right direction of the vehicle, the front-back direction of the rear floor structure is the same as the front-back direction of the vehicle, and the up-down direction of the rear floor structure is the same as the up-down direction of the vehicle. The terms "front-back," "left-right," and "up-down" used in the following technical solutions are based on the vehicle's position on a horizontal plane or the ground.

[0029] The following is combined Figures 1 to 12 The following describes embodiments of the present invention.

[0030] According to an embodiment of this utility model, in one aspect, a rear floor structure is provided. For example... Figure 1 , Figure 2 As shown, the rear floor structure includes a panel assembly 10, a first bracket 20, and a second bracket 30. The lower surfaces of both sides of the panel assembly 10 in the left-right direction are provided with longitudinal beam structures 40. The first bracket 20 is arranged along the longitudinal beam structure 40 in the front-back direction and is connected to the longitudinal beam structure 40. The first bracket 20 has a first connecting part 21 for installing a battery swapping unit. The second bracket 30 is disposed on the lower surface of the panel assembly 10, connected to the panel assembly 10, and located inside the first bracket 20. The second bracket 30 is used to install the battery pack.

[0031] In this embodiment, the rear floor structure includes a panel assembly 10, which serves as the mounting base for other components. The lower surfaces of both sides of the panel assembly 10 in the left-right direction are provided with longitudinal beam structures 40. A first bracket 20 is connected to the longitudinal beam structure 40. The first bracket 20 is located at the front end of the panel assembly 10 and is positioned along the longitudinal direction of the longitudinal beam structure 40. The first bracket 20 is used to connect the battery swapping unit; that is, the battery swapping unit is detachably connected to the first connection portion 21 on the first bracket 20. As a load-bearing component, the longitudinal beam structure 40 can evenly distribute the weight of the battery swapping unit to the vehicle sidewalls and chassis, preventing stress concentration at the front end of the panel assembly 10. Furthermore, the longitudinal beam structure 40 is typically made of high-strength steel or aluminum alloy. Extending along the longitudinal direction of the panel assembly 10, the longitudinal beam structure 40 effectively resists the longitudinal bending force caused by the weight of the battery swapping unit. Simultaneously, it reduces the deformation of the panel assembly 10 due to inertial loads during vehicle acceleration and braking, ensuring the overall stability of the structure.

[0032] Furthermore, the second bracket 30 is used to install the battery pack. The second bracket 30 is located on the lower surface of the board assembly 10 and at the front end of the board assembly 10. The second bracket 30 is located inside the first bracket 20. The two are independent of each other, which can realize the independent installation, removal and maintenance of the two batteries. For example, when replacing the battery, only the first connecting part 21 on the first bracket 20 needs to be operated, without disassembling the battery pack on the second bracket 30; when inspecting the battery pack, the installation status of the battery will not be affected.

[0033] By dividing the functions of the first bracket 20 and the second bracket 30, this rear floor structure can support two types of batteries respectively. The first bracket 20 is set along the longitudinal beam structure 40 and is adapted to the swappable battery through the first connecting part 21 to meet the user's need for rapid battery swapping and replenishment, such as efficient replenishment in ride-hailing and long-distance travel scenarios. The second bracket 30 is located inside the first bracket 20 and is independently connected to the plate assembly 10. It is used to install battery packs, such as energy storage batteries, which can serve as backup power or meet long-range battery requirements, such as daily commuting in home scenarios where frequent battery swapping is not necessary. This dual-battery installation design avoids the shortcomings of traditional rear floor structures that can only accommodate a single type of battery.

[0034] In addition, traditionally, only the rear suspension and exhaust system are installed under the rear floor, resulting in low space utilization. This structure places both the first bracket 20 and the second bracket 30 on the lower surface of the panel assembly 10, making use of the longitudinal space under the rear floor.

[0035] In one embodiment, along the height direction of the plate assembly 10, the height of the first support 20 is h1, and the height of the second support 20 is h2, wherein h1≥h2.

[0036] like Figure 4As shown, in the height direction of the plate assembly 10, the first bracket 20 and the second bracket 30 are set at the same height. That is, the battery swapping battery is set along the lower bottom surface of the first bracket 20 and connected to the lower bottom surface of the first bracket 20 through the first connecting part 21. The mounting reference of the battery swapping battery is the lower bottom surface of the first bracket 20. The connecting protrusion of the battery pack is located inside the second bracket 30. The thickness of the battery pack should be less than the thickness of the second bracket 30 so that the battery swapping battery and the battery pack in the battery swapping range extender vehicle will not cause spatial interference.

[0037] The first bracket 20 extends along the longitudinal beam structure 40 front and rear, and the second bracket 30 is located inside the first bracket 20. The two have no spatial interference on the bottom surface of the plate assembly 10, which can accommodate the battery swapping battery and battery pack in the limited space under the rear floor without occupying the passenger or trunk space, ensuring the regularity and comfort of the interior space, and solving the problem of insufficient space utilization in the prior art.

[0038] like Figure 2 , Figure 5 , Figure 6 As shown, the second bracket 30 has an opening 31 facing the front of the plate assembly 10, and a through hole 32 at the bottom of the second bracket 30 for a fastener to pass through. The outer side of the battery pack has a connecting protrusion with a connecting hole. The opening 31 allows the connecting protrusion of the battery pack to enter. The connecting hole on the connecting protrusion corresponds to the through hole 32. A bolt passes through the connecting hole and the through hole 32, and a nut is used to connect the battery pack to the second bracket 30. This design allows for a detachable connection of the battery pack, meaning the battery pack can be installed or removed according to different vehicle models, making operation convenient and maintenance easy. Furthermore, the opening facing the front of the plate assembly 10 allows the battery pack to be installed at the front of the rear floor structure without occupying interior passenger or trunk space.

[0039] like Figure 2 , Figure 6 , Figure 7 , Figure 8 As shown, the first bracket 20 is a frame structure. The thickness of the first bracket 20 in the vertical direction is the same as the thickness of the longitudinal beam structure 40 in the vertical direction. The first connecting part 21 is located on the bottom surface of the first bracket 20. The first connecting part 21 is a through hole structure with multiple through holes of different diameters. The through holes are used for fasteners to pass through. The two ends of the battery swapping device are respectively located on the bottom surfaces of the two first brackets 20 and are connected by fasteners passing through the through holes.

[0040] The first bracket 20 and the second bracket 30 are independent of each other and have no direct structural connection, allowing for independent installation, removal, and maintenance of both batteries. For example, when replacing the battery, only the first connecting part 21 on the first bracket 20 needs to be operated, without disassembling the battery pack on the second bracket 30; when inspecting the battery pack, the installation status of the battery will not be affected, reducing maintenance difficulty and time costs, while also reducing the risk of interference to the other battery during maintenance operations.

[0041] like Figure 1 , Figure 3 , Figure 5 As shown, the plate assembly 10 includes a first plate 11 and a second plate 12. The lower surfaces of both sides of the first plate 11 in the left and right directions are provided with longitudinal beam structures 40. The second plate 12 is located in front of the first plate 11, and a first support 20 is located in front of the longitudinal beam structure 40. The lower surface of the second plate 12 is provided with a second support 30, and the first support 20 is located on both sides of the second plate 12 in the left and right directions.

[0042] The above structure positions the first bracket 20 close to the longitudinal beam structure 40 (outer side of the vehicle body), avoiding the movement trajectory of chassis components such as the rear suspension and exhaust system. The second bracket 30 is located inside the first bracket 20 (close to the center of the vehicle body), keeping it away from high-voltage wiring harnesses or fuel lines (in range-extended vehicles) near the longitudinal beam structure 40, thus avoiding the risk of interference between the battery and surrounding components. Simultaneously, the weight of the swappable battery is jointly borne by the longitudinal beam structure 40 and the second plate 12, with the battery pack supported by the second plate 12, distributing the localized load on the rear floor structure and reducing stress concentration.

[0043] like Figure 1 , Figure 3 , Figure 4 As shown, a boss structure 13 is formed at the connection between the first plate 11 and the second plate 12. The boss structure 13 extends in the left-right direction along the first plate 11 or the second plate 12 and is used to stop the seat. The boss structure 13 extends left and right along the connection between the first plate 11 and the second plate 12, forming a rigid stop perpendicular to the sliding direction (front-back direction) of the seat. When the vehicle brakes suddenly, accelerates suddenly, or travels on bumps, the seat is prone to sliding forward and backward due to inertia. The boss structure 13 can directly fit into the slide rail or bracket at the bottom of the seat to provide reverse support force and limit the seat from moving excessively.

[0044] like Figure 9 , Figure 11 As shown, the plate assembly 10 also includes a third plate 14, which is located behind the first plate 11 and is connected to the first plate 11.

[0045] It should be noted that the area containing the first plate 11 is denoted by 'a', the area containing the second plate 12 is denoted by 'b', and the area containing the third plate 14 is denoted by 'c'. 'a' includes the first plate 11 and other components at both ends of the first plate 11 in the left and right directions, as well as other components on the upper and lower surfaces. The same applies to 'b' and 'c'. This display is only for the convenience of those skilled in the art to clearly distinguish the components and does not mean that the entire area containing 'a' is the first plate 11, nor does it mean that the entire area containing 'b' and 'c' is the first plate 11.

[0046] like Figure 4 , Figure 5 As shown, the second plate 12 includes a first horizontal segment 121, a vertical segment 122, and a second horizontal segment 123 connected in sequence. The first horizontal segment 121 is connected to the first plate 11, and the first support is located at both ends of the second horizontal segment in the left-right direction. Specifically, one end of the first horizontal segment 121 is connected to one side of the first plate 11 in the front-back direction, one end of the vertical segment 122 is connected to the other end of the first horizontal segment 121, and the second horizontal segment 123 is connected to the other end of the vertical segment 122. The first plate 11, the first horizontal segment 121, and the vertical segment 122 form a boss structure 13. The second support 30 is located at the edge of the vertical segment 122 and the second horizontal segment 123. The vertical section 122 creates a height difference between the first horizontal section 121 and the second horizontal section 123. The first horizontal section 121 supports the weight of the seat, and the first bracket 20 is installed on the lower surface of the second horizontal section 123 to install the battery swapping device. The first horizontal section 121 and the second horizontal section 123 are layered in the vertical direction, which can avoid the space restrictions under the rear seats, such as seat rails and foot space. At the same time, the extended design of the second horizontal section 123 can reserve a front-to-back disassembly and installation channel for the battery swapping device, avoiding interference between the battery swapping operation and the seat and panel assembly 10.

[0047] like Figure 7 , Figure 8 As shown, the second bracket 30 includes two opposing first sides 33 and a second side 34 connected between the two first sides 33, as well as a bottom edge 35 connected to the lower ends of the first sides 33 and the second side 34. The first sides 33 and the second side 34 are provided with connecting flanges 331, which are connected to the second horizontal segment 123. The second side 34 extends toward the vertical segment 122 and is connected to the vertical segment 122. The bottom edge 35 is provided with a through hole 32. The second bracket 30 is connected to the second horizontal segment 123 through the connecting flanges 331 of the first side 33, and the second side 34 is directly connected to the vertical segment 122, forming a double fixation in both the horizontal and vertical directions. Compared with single-direction fixation, this can resist vibrations and impacts during vehicle operation, such as longitudinal forces on bumpy roads and inertial forces during sudden braking, preventing the second bracket 30 from loosening or shifting and ensuring the installation stability of the battery pack.

[0048] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, there are at least two second supports 30, and the bottom surface of the second horizontal section 123 is also provided with a reinforcing support 15. There are at least two reinforcing supports 15, and each reinforcing support 15 is arranged between each first support 20 and each second support 30. Along the height direction of the plate assembly 10, the bottom surface of the reinforcing support 15 is set at the same height as the bottom surface of the first support 20 and the bottom surface of the second support 30. The reinforcing support 15 is a triangular structure.

[0049] Specifically, multiple second brackets 30 are spaced apart along the bottom surface of the second horizontal section, which can evenly transfer the weight of the battery pack to the second plate 12. Compared with a single bracket bearing the load, this can effectively reduce the local pressure at the connection point of each second bracket 30 and the second plate 12, prevent the second plate 12 from denting or cracking due to long-term stress, extend the service life of the second plate 12 and the second bracket 30, and at the same time ensure the stability of the battery pack installation and reduce the risk of battery displacement caused by vibration.

[0050] Furthermore, the reinforcing bracket 15 is positioned between the first bracket 20 and the second bracket 30 and is a triangular structure. It can effectively resist the lateral and longitudinal forces generated by the weight of the battery or vehicle vibration of the first bracket 20 and the second bracket 30, prevent the plate area between the two brackets from deforming due to lack of support, and improve the torsional and bending resistance of the overall structure under the rear floor.

[0051] Specifically, the reinforcing bracket 15 includes two oppositely arranged sides and an inclined surface connecting the two sides. Both sides are provided with connecting flanges, which are connected to the bottom surface of the second horizontal segment 123. The inclined surface is inclined downwards towards the front end of the second horizontal segment 123 along the front-back direction of the second horizontal segment 123.

[0052] like Figure 1 , Figure 9 , Figure 10 As shown, the upper surface of the first plate 11 is provided with a first crossbeam 50 and a third bracket 60. The third bracket 60 is located behind the first crossbeam 50. The first crossbeam 50 is arranged along the left and right direction of the first plate 11. There are at least two third brackets 60, which are arranged at intervals along the left and right direction of the first plate 11. The first crossbeam 50 is provided with a second connecting part 51 for installing a charging module, and the third bracket 60 is provided with a third connecting part 61 for installing a charging module.

[0053] Specifically, the first crossbeam 50 is arranged in the left-right direction and is adapted to the charging module through the second connecting part 51. Together with at least two third brackets 60 arranged at intervals along the left and right sides, a multi-point installation structure is formed, which can stably fix the charging module, such as the high and low voltage charging interfaces and the control module, preventing the module from shifting due to vibration. At the same time, the charging modules are centrally installed on the upper surface of the first plate 11, i.e., under the rear seats, facilitating close electrical connection with the battery swapping battery and battery pack on the lower surface of the rear floor. This shortens the wiring harness length, reduces energy loss and electromagnetic interference, and improves charging efficiency.

[0054] The second connecting part 51 has multiple through holes, and the multiple through holes corresponding to the second connecting part 51 are spaced apart. The third connecting part 61 has multiple through holes, and the multiple through holes corresponding to the third connecting part 61 are spaced apart, so as to improve the installation stability of the charging module.

[0055] like Figure 1 , Figure 9 , Figure 11 As shown, the rear floor structure also includes a wheel cover assembly 70, which includes a first wheel cover 71 and a second wheel cover 72. The first wheel cover 71 and the second wheel cover 72 are located on the left and right sides of the first plate 11, respectively. One end of the first crossbeam 50 is connected to the first wheel cover 71, and the other end of the first crossbeam 50 is connected to the second wheel cover 72. The first wheel cover 71 or the second wheel cover 72 is provided with a first notch 711, which is used to insert a wire connected to the charging module.

[0056] Specifically, the first wheel cover 71 and the second wheel cover 72 are located on the left and right sides of the first plate 11, respectively. They can cover the rear wheels of the vehicle to resist the impact of road debris on the vehicle body during driving. At the same time, as the connection node between the side panel of the vehicle body and the rear floor, they can transfer the side impact force to the first crossbeam 50 and the longitudinal beam structure 40, reducing the impact of the impact on the interior space of the vehicle. The first notch 711 on the wheel cover is used to insert the charging module wires, so that the wires can be arranged along the inside of the wheel cover, avoiding the outside of the vehicle body, preventing the wires from being exposed to the outside and being worn or corroded by harsh environments (rainwater, mud and sand), and ensuring the safety of electrical connections.

[0057] like Figure 1 , Figure 9 , Figure 11 As shown, the rear floor structure also includes a third panel 14, a second crossbeam 80 and a third crossbeam 90. The third panel 14 is located behind the first panel 11 and is connected to the first panel 11, extending the longitudinal space of the rear floor and adapting to the layout of the trunk or cargo box.

[0058] like Figure 1 , Figure 9 , Figure 11 , Figure 12As shown, the second crossbeam 80 and the third crossbeam 90 are located on the lower surface of the first plate 11. The second crossbeam 80 and the third crossbeam 90 are both arranged along the left and right direction of the first plate 11. The third crossbeam 90 is connected to both the first plate 11 and the third plate 14. The two ends of the third crossbeam 90 are connected to the longitudinal beam structure 40. The two ends of the second crossbeam 80 are connected to the longitudinal beam structure 40. The second crossbeam 80 and the third crossbeam 90 are provided with a fourth bracket 81 for installing the oil tank. The fourth bracket 81 is provided with a fourth connecting part 811 for installing the oil tank.

[0059] The second crossbeam 80 and the third crossbeam 90 are set on the left and right sides along the lower surface of the first plate 11. The fourth bracket 81 provides a stable mounting point for the fuel tank, realizing a longitudinal partitioned layout in which the battery is located on the front side of the rear floor and the fuel tank is located on the rear side of the rear floor. This is especially suitable for the dual power requirements of electric and gasoline vehicles for range-extended battery swapping vehicles, avoiding interference between the battery and fuel tank space.

[0060] Furthermore, the second crossbeam 80 and the third crossbeam 90 are connected at both ends to the longitudinal beam structure 40, forming a grid-like support structure that combines longitudinal and crossbeams. This structure can evenly transfer the weight of the fuel tank and dynamic loads during driving, such as acceleration and braking inertial forces, to the vehicle body, avoiding localized stress concentration in the first plate 11 and the third plate 14. The third crossbeam 90 also connects the first plate 11 and the third plate 14, further strengthening the structural strength at their connection and reducing longitudinal deformation of the rear floor.

[0061] like Figure 1 , Figure 9 , Figure 11 , Figure 12 As shown, the first plate 11 is also equipped with a fuel tank access port, located between the second crossbeam 80 and the third crossbeam 90, and equipped with an access cover 110. The fuel tank access port is situated directly above the fuel tank, allowing for direct inspection, refueling, or repair of the fuel tank without disassembling other components of the rear floor, such as the battery or seat, significantly reducing maintenance time and operational complexity. The access cover 110 seals the fuel tank access port, preventing rainwater and dust from entering the fuel tank area and causing corrosion or malfunction of components. Furthermore, the access cover 110 is typically made of waterproof and flame-retardant materials, enhancing the fire and water resistance of the fuel tank area and preventing the risk of fuel leakage due to an open access port.

[0062] According to an embodiment of the present invention, another aspect provides a vehicle that includes the rear floor structure described in the above embodiment.

[0063] The aforementioned vehicles can be either cars or low-altitude aircraft.

[0064] The vehicles can be either new energy vehicles or gasoline-powered vehicles.

[0065] Among them, new energy vehicles can be pure electric vehicles, battery-swapping range-extended vehicles, and non-battery-swapping range-extended vehicles.

[0066] 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.

[0067] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0068] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0069] 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 rear floor structure, characterized in that, include: The plate assembly (10) has longitudinal beam structures (40) on the lower surfaces of both sides in the left and right directions. The first bracket (20) is arranged along the front-rear direction of the longitudinal beam structure (40), and the first bracket (20) is connected to the longitudinal beam structure (40). The first bracket (20) is provided with a first connecting part (21) for installing the battery swapping device. The second bracket (30) is disposed on the lower surface of the plate assembly (10), the second bracket (30) is connected to the plate assembly (10), the second bracket (30) is located inside the first bracket (20), and the second bracket (30) is used to install the battery pack.

2. The rear floor structure according to claim 1, characterized in that, The second bracket (30) is provided with an opening (31) facing the front side of the plate assembly (10), and the bottom of the second bracket (30) is provided with a through hole (32) for the fastener to pass through.

3. The rear floor structure according to claim 2, characterized in that, The plate assembly (10) includes: The first plate (11) has the longitudinal beam structure (40) on the lower surfaces of both sides in the left and right directions. The second plate (12) is located in front of the first plate (11). The second bracket (30) is provided on the lower surface of the second plate (12). The first bracket (20) is located at both ends of the second plate (12) in the left and right direction. A boss structure (13) is formed at the connection between the first plate (11) and the second plate (12). The boss structure (13) extends along the left and right direction of the first plate (11) or the second plate (12). The boss structure (13) is used to stop the seat.

4. The rear floor structure according to claim 3, characterized in that, The second plate (12) includes a first horizontal section (121), a vertical section (122), and a second horizontal section (123) connected in sequence. The first horizontal section (121) is connected to the first plate (11). The first bracket (20) is located at both ends of the second horizontal section (123) in the left and right directions. The second bracket (30) includes two first side edges (33) arranged opposite to each other and a second side edge (34) connected between the two first side edges (33). A bottom edge (35) is connected to the lower end of the first side edge (33) and the second side edge (34). The first side edge (33) and the second side edge (34) are provided with connecting flanges (331). The connecting flanges (331) are connected to the second horizontal section (123). The second side edge (34) extends toward the vertical section (122) and is connected to the vertical section (122). The bottom edge (35) is provided with the through hole (32).

5. The rear floor structure according to claim 4, characterized in that, There are at least two second supports (30), and the bottom surface of the second horizontal section (123) is also provided with a reinforcing support (15). There are at least two reinforcing supports (15), and each reinforcing support (15) is disposed between each first support (20) and each second support (30). The reinforcing support (15) is a triangular structure.

6. The rear floor structure according to claim 3, characterized in that, The upper surface of the first plate (11) is provided with a first crossbeam (50) and a third bracket (60). The third bracket (60) is located on the rear side of the first crossbeam (50). The first crossbeam (50) is arranged along the left and right direction of the first plate (11). There are at least two third brackets (60). The at least two third brackets (60) are arranged at intervals along the left and right direction of the first plate (11). The first crossbeam (50) is provided with a second connecting part (51) for installing the charging module. The third bracket (60) is provided with a third connecting part (61) for installing the charging module.

7. The rear floor structure according to claim 6, characterized in that, The rear floor structure also includes: Wheel cover assembly (70), the wheel cover assembly (70) includes a first wheel cover (71) and a second wheel cover (72), the first wheel cover (71) and the second wheel cover (72) are respectively located on the left and right sides of the first plate (11), one end of the first crossbeam (50) is connected to the first wheel cover (71), and the other end of the first crossbeam (50) is connected to the second wheel cover (72). The first wheel cover (71) or the second wheel cover (72) is provided with a first notch (711), the first notch (711) is used to insert the wire connected to the charging module.

8. The rear floor structure according to claim 7, characterized in that, The rear floor structure also includes a third plate (14), a second crossbeam (80), and a third crossbeam (90). The third plate (14) is located behind the first plate (11) and is connected to the first plate (11). The second crossbeam (80) and the third crossbeam (90) are located on the lower surface of the first plate (11). The second crossbeam (80) and the third crossbeam (90) are both arranged along the left and right direction of the first plate (11). The third crossbeam (90) is connected to both the first plate (11) and the third plate (14). The two ends of the third crossbeam (90) are connected to the longitudinal beam structure (40). The two ends of the second crossbeam (80) are connected to the longitudinal beam structure (40). The second crossbeam (80) and the third crossbeam (90) are provided with a fourth bracket (81) for installing the oil tank. The fourth bracket (81) is provided with a fourth connecting part (811) for installing the oil tank.

9. The rear floor structure according to claim 8, characterized in that, The first plate (11) is also provided with an oil tank inspection port, which is located between the second crossbeam (80) and the third crossbeam (90), and the oil tank inspection port is provided with an inspection cover (110).

10. A vehicle, characterized in that, The vehicle includes the rear floor structure as described in any one of claims 1-9.

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