Vehicle frame and vehicle

Abstract

This invention provides a vehicle frame and a vehicle. The vehicle frame includes a body frame and a chassis connected to the bottom of the body frame. The chassis includes a front subframe, a rear subframe, and connecting beams connecting the front and rear subframes. The connecting beams are two beams located on the left and right sides, and a battery pack is disposed within the space defined by the front subframe, the rear subframe, and the connecting beams on both sides. This invention enables the battery pack to slide and detach from the body frame along with the chassis during a collision, increasing the safety of the battery pack in side impacts and thus improving the overall safety of the vehicle.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a vehicle frame. The invention also relates to a vehicle equipped with the aforementioned vehicle frame. Background Technology

[0002] With technological advancements and rising living standards, new energy vehicles are increasingly becoming a primary consideration for car buyers. As people place greater emphasis on vehicle collision safety, the collision safety of new energy vehicles equipped with battery packs is also becoming a key focus of research and development for automakers.

[0003] Moreover, in current new energy vehicles, the battery pack is generally located under the passenger compartment and is mainly assembled and connected to the door sill beams on both sides. Although the existing battery pack arrangement can meet the installation requirements, it is easy to impact the battery pack in the event of a side collision, which can lead to damage to the battery pack. In severe cases, it may even cause the battery pack to catch fire, posing a great risk to the safety of the passengers and hindering the improvement of the overall vehicle safety quality. Summary of the Invention

[0004] In view of this, the present invention aims to provide a vehicle frame to improve the safety quality of vehicles.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A vehicle frame includes a body frame and a chassis connected to the bottom of the body frame;

[0007] The chassis includes a front subframe, a rear subframe, and a connecting beam connecting the front subframe and the rear subframe.

[0008] The connecting beam consists of two beams located on the left and right sides, and the battery pack is installed within the space defined by the front subframe, the rear subframe, and the connecting beams on both sides.

[0009] Furthermore, the battery pack is provided with connecting brackets on the left and right sides respectively, and the connecting brackets on each side are connected to the lower part of the connecting beam on the same side through connectors.

[0010] Furthermore, each of the connecting members includes a first connecting member that connects the battery pack and the connecting beam together, and a second connecting member that connects the battery pack, the connecting beam and the vehicle frame together.

[0011] Furthermore, both the first and second connectors employ a screw-in connection; and / or,

[0012] The second connector is disposed near the end of the connecting beam, and the second connector is disposed near the front and rear ends of the connecting beam on each side.

[0013] Furthermore, the front subframe has front subframe longitudinal beams located on the left and right sides, and the rear subframe has rear subframe longitudinal beams located on the left and right sides.

[0014] In the left-right direction of the vehicle, the connecting beams on each side are located on the side of the front subframe longitudinal beam and the rear subframe longitudinal beam that are closer to the outside of the vehicle.

[0015] Furthermore, a front crossbeam is provided on the rear side of the front subframe, and the front ends of the connecting beams on both sides are connected to the longitudinal beams of each front subframe through the front crossbeam.

[0016] The rear end of each connecting beam is connected to the front end of the longitudinal beam of the rear subframe on the same side, and a rear crossbeam is connected between the longitudinal beam of the rear subframe on both sides and the connecting beam.

[0017] The battery pack is disposed within the space defined by the front crossbeam, the rear crossbeam, and the connecting beams on both sides.

[0018] Furthermore, the front crossbeam has a main body and extended sections located on the left and right sides of the main body, the front subframe longitudinal beams on both sides are connected to the main body, and the connecting beams on both sides are respectively connected to the extended sections on the corresponding sides; and / or,

[0019] Each side of the connecting beam has an inclined connecting section at its rear end. Each side of the connecting beam is connected to the front end of the rear subframe longitudinal beam on the same side through the connecting section. The distance between the connecting sections on both sides gradually decreases from front to back in the longitudinal direction of the vehicle.

[0020] Furthermore, mounting holes are provided at the locations where the rear subframe longitudinal beams and the connecting beams on both sides connect, and bushings are provided in the mounting holes, through which the battery pack is connected to the vehicle body frame; and / or,

[0021] The rear crossbeam is arched downwards along the vertical direction of the vehicle and has a straight section in the middle and bent sections on the left and right sides. Both bent sections are inclined upwards, and the rear crossbeam is connected to the rear subframe longitudinal beam through the bent sections.

[0022] Furthermore, the rear end of the rear subframe is provided with a rear subframe anti-collision beam, and the rear ends of the longitudinal beams of the rear subframe on both sides are provided with rear subframe energy-absorbing boxes; the rear subframe anti-collision beam is connected to the energy-absorbing boxes of the rear subframe on both sides; and / or,

[0023] In the left-right direction of the vehicle, each side of the connecting beam is connected to a side step mounting plate on the side facing outward. The side step mounting plate extends along the front-rear direction of the vehicle and has a side step mounting surface on its top.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] The vehicle frame described in this invention is configured with a chassis consisting of front and rear subframes and connecting beams that connect the two, and the battery pack is housed in the chassis. In the event of a collision, the battery pack can slide and detach from the vehicle frame along with the chassis, reducing the impact on the battery pack and increasing its safety in side collisions, thereby improving the overall safety of the vehicle.

[0026] In addition, connecting brackets are provided on both sides of the battery pack, and each connecting bracket is connected to the lower part of the connecting beam via connectors, which facilitates the connection between the battery pack and the connecting beam. By including a second connector on each side that can connect the battery pack, connecting beam, and sill beam together, the installation of the battery pack and the connecting beams on both sides of the vehicle body can be achieved simultaneously. This allows for the integrated design of the battery pack installation structure, eliminating the need for separate connecting beams on both sides of the battery pack to the vehicle body, thereby reducing the overall vehicle installation cost.

[0027] The first and second connecting parts adopt a screw-in structure, which is simple in structure, easy to operate, and ensures the reliability of the connection. The second connecting part is positioned near the end of the connecting beam, and second connecting parts are also positioned near the front and rear ends of each side connecting beam. This facilitates the separation of the chassis from the body frame during a collision, allowing the battery pack to slide along with the chassis. The connecting beams on each side are located on the same side of the front subframe longitudinal beam and the rear subframe longitudinal beam, closer to the outside of the vehicle. This helps to achieve the Y-direction cross-sectional changes of the front and rear parts of the monocoque body, meeting the matching design requirements between the chassis and body frame in a monocoque body.

[0028] Secondly, the arrangement of the front and rear crossbeams, with the battery pack positioned within the space defined by the front and rear crossbeams and the connecting beams on both sides, helps to create a rigid, enveloping ring-shaped frame structure, thereby improving the battery pack's collision safety. The connecting beams are connected to the longitudinal beams of the front subframe via extensions in the front crossbeams, facilitating the connection between the connecting beams and the front subframe and allowing for easy changes in the Y-axis cross-section of the front of the vehicle.

[0029] The rear ends of the connecting beams on each side are equipped with inclined connecting sections, which facilitates the connection with the rear subframe longitudinal beams. The distance between the connecting sections on both sides gradually decreases from front to rear, which helps to achieve a Y-axis cross-sectional change at the rear of the monocoque vehicle body, meeting the matching design requirements between the chassis and the body frame in a monocoque vehicle body. Mounting holes are provided at the locations where the rear subframe longitudinal beams and connecting beams connect, allowing the battery pack to connect to the body frame through bushings within these mounting holes, forming Z-axis support and helping to improve the overall rigidity of the vehicle frame.

[0030] In addition, the rear crossbeam features a downward arch and a straight section, which increases its structural strength and facilitates the connection between the battery pack and the rear crossbeam. The rear subframe's collision performance is improved through the inclusion of a rear subframe anti-collision beam and an energy-absorbing box. A side step mounting plate is connected to the outside of the connecting beam, serving both as a base for the side step assembly and as a side-impact energy-absorbing structure, achieving a dual-purpose design and saving on side step mounting frames, thus contributing to a lightweight vehicle body design.

[0031] Another object of the present invention is to provide a vehicle having the vehicle frame described above.

[0032] The vehicle described in this invention has the same beneficial effects as the vehicle frame described above, and will not be repeated here. Attached Figure Description

[0033] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0034] Figure 1 This is a schematic diagram of the vehicle frame according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the chassis described in an embodiment of the present invention;

[0036] Figure 3 for Figure 2 Schematic diagram of the middle section;

[0037] Figure 4 This is a schematic diagram of the battery pack structure according to an embodiment of the present invention;

[0038] Figure 5 This is a connection diagram of the first connector according to an embodiment of the present invention;

[0039] Figure 6 This is a connection diagram of the second connector according to an embodiment of the present invention;

[0040] Figure 7This is a schematic diagram of the front subframe structure according to an embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the rear subframe structure according to an embodiment of the present invention;

[0042] Figure 9 This is a schematic cross-sectional view of the connecting beam described in an embodiment of the present invention;

[0043] Figure 10 This is a schematic diagram of the structure of the rear crossbeam according to an embodiment of the present invention;

[0044] Figure 11 This is a schematic diagram of the structure of the rear subframe anti-collision beam and the rear subframe energy-absorbing box according to an embodiment of the present invention;

[0045] Figure 12 This is a schematic diagram of the bushing described in an embodiment of the present invention;

[0046] Figure 13 This is a schematic diagram illustrating the installation of the side step mounting plate according to an embodiment of the present invention;

[0047] Figure 14 This is a schematic diagram of the structure of the side step mounting plate and connecting beam made of extruded aluminum according to an embodiment of the present invention;

[0048] Figure 15 This is a schematic diagram of the structure of the side step mounting plate and connecting beam using a steel roll forming structure, as described in an embodiment of the present invention.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Connecting beam; 2. Battery pack; 3. Sill beam; 4. Front subframe; 5. Rear subframe; 6. Side step mounting plate;

[0051] 1a. Connecting section; 1b. Transverse reinforcing rib; 1c. Mounting hole; 1d. Bushing; 201. Connecting bracket; 202. Front mounting bracket; 203. Rear mounting bracket; 401. Front subframe longitudinal beam; 402. Front subframe front crossbeam; 403. Front subframe middle crossbeam; 404. Front crossbeam; 404a. Crossbeam body; 404b. Extended section; 405. Front subframe anti-collision beam; 406. Front subframe energy-absorbing box; 501. Rear subframe longitudinal beam; 502. Rear subframe front crossbeam; 503. Rear subframe rear crossbeam; 504. Rear crossbeam; 5041. Straight section; 5042. Bending section; 505. Rear subframe anti-collision beam; 506. Rear subframe energy-absorbing box; 6a. Side step mounting surface; 6b. Collapse guide rib; 6c. Vertical reinforcing rib;

[0052] 100. Body frame; 200. Chassis; 300. Threaded pipe; 400. First connector; 500. Threaded sleeve; 600. Second connector;

[0053] G, longitudinal beam connection position; Q, battery pack installation space; m, second connector connection position; n, first connector connection position. Detailed Implementation

[0054] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0055] In the description of this invention, it should be noted that the use of terms such as "upper," "lower," "inner," and "outer," indicating orientation or positional relationship, is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description. It does 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 a limitation of the invention. Furthermore, the use of terms such as "first" and "second" is also for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0057] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0058] Example 1

[0059] This embodiment relates to a vehicle frame, which is applied to new energy vehicle models with battery packs, and is preferably a pure electric vehicle model. The vehicle frame can increase the safety of the battery pack 2 in the event of a side collision, which is beneficial to improving the overall safety quality of the vehicle.

[0060] In terms of overall structure, combined Figures 1 to 3 As shown, the vehicle frame in this embodiment includes a body frame 100 and a chassis 200 connected to the bottom of the body frame 100.

[0061] The chassis 200 includes a front subframe 4, a rear subframe 5, and a connecting beam 1 connecting the front subframe 4 and the rear subframe 5. The connecting beam 1 consists of two beams located on the left and right sides, and the battery pack 2 is disposed within the space defined by the front subframe 4, the rear subframe 5, and the connecting beams 1 on both sides.

[0062] At this time, as set above, by setting the chassis 200 to consist of front and rear subframes and connecting beam 1 connecting the two, and placing the battery pack 2 in the chassis 200, in the event of a vehicle collision, this embodiment allows the battery pack 2 to slide and detach from the vehicle frame 100 along with the chassis 200 as a whole, which can reduce the impact of the collision on the battery pack 2 and thus increase the safety of the battery pack 2 in the event of a side collision.

[0063] Based on the above overall introduction, specifically, the body frame 100 of this embodiment generally includes a side frame composed of sill beams 3, A-pillars, B-pillars and C-pillars, a roof frame composed of roof side beams and roof cross beams, as well as a front frame and a rear frame. In specific implementation, the body frame 100 can also refer to the conventional structure in existing vehicles, especially new energy vehicles.

[0064] Continue as Figures 4 to 6 As shown in the diagram, in a preferred embodiment, connecting brackets 201 are respectively provided on the left and right sides of the battery pack 2, and each connecting bracket 201 is also connected to the lower part of the connecting beam 1 on the same side via connectors. Thus, by providing connecting brackets 201 on both sides of the battery pack 2, and ensuring that each connecting bracket 201 is connected to the lower part of the connecting beam 1 via connectors, the connection between the battery pack 2 and the connecting beam 1 can be easily achieved, thereby facilitating the arrangement of the battery pack 2 within the chassis 200.

[0065] In a specific implementation, as a preferred embodiment, each of the above-mentioned side connectors also includes a first connector 400 that connects the battery pack 2 and the connecting beam 1 together, and a second connector 600 that connects the battery pack 2, the connecting beam 1 and the vehicle body frame 100 together.

[0066] The aforementioned second connector 600 is generally connected to the sill beam 3 in the vehicle frame 100. It can be understood that by making the connectors on each side also include the second connector 600 that can connect the battery pack 2, the connecting beam 1 and the sill beam 3 together, this embodiment can simultaneously realize the installation of the whole consisting of the connecting beams 1 on both sides and the battery pack 2 in the vehicle body while realizing the installation of the battery pack 2. By utilizing the integrated design of the battery pack 2 partial installation structure, it is not necessary to set up a separate connection structure between the connecting beam 1 and the vehicle body on both sides of the battery pack 2, which is conducive to reducing the cost of the overall vehicle installation structure.

[0067] In this embodiment, the connecting brackets 201 located on the left and right sides of the battery pack 2 are fixed to the outer frame of the battery pack 2. Preferably, both the connecting brackets 201 on both sides and the outer frame of the battery pack 2 can be made of extruded aluminum profiles, which also makes the connecting brackets 201 integrally formed with the side portions of the outer frame. This arrangement facilitates the fabrication of the connecting brackets 201, ensures the structural strength of the connecting brackets 201, and helps to ensure the reliability of the battery pack 2 after assembly.

[0068] Furthermore, as a preferred embodiment, in specific implementation, the second connector 600 that connects the battery pack 2, the connecting beam 1, and the sill beam 3 is preferably arranged near the end of the connecting beam 1, and the second connector 600 can be provided near both the front and rear ends of each side of the connecting beam 1.

[0069] Therefore, in this embodiment, the second connectors 600 are distributed at the four front and rear corners near the battery pack 2, that is, the second connectors 600 on each side are arranged in... Figure 2 The location indicated by the label m shown. For the first connector 400 that connects only the battery pack 2 and the connecting beam 1, it can be configured as a plurality of spaced-apart components, and for example, can be arranged separately in... Figure 2 The position indicated by the number n.

[0070] It is understandable that by setting the second connector 600 close to the end of the connecting beam 1, and setting the second connector 600 close to the front and rear ends of each side connecting beam 1, this embodiment is conducive to the separation between the chassis 200 and the body frame 100 during a collision, so that the battery pack 2 can slide together with the chassis 200, thereby reducing the impact of the collision on the battery pack 2.

[0071] Continue as Figure 5 and Figure 6 As shown in the illustration, preferably, in this embodiment, both the first connector 400 and the second connector 600 are screwed together. This screwed connection not only simplifies the structure and facilitates operation, but also ensures reliable connection.

[0072] In a specific implementation, as a feasible approach, for example, threaded pipes 300 can be provided in the connecting beam 1 corresponding to each of the first connecting members 400, and each of the first connecting members 400 is connected to the corresponding threaded pipe 300, thereby connecting the connecting bracket 201 and the connecting beam 1 together.

[0073] Similar to the first connector 400, in this embodiment, threaded sleeves 500 are also provided in the connecting beam 1 corresponding to each of the second connectors 600. The top of the threaded sleeve 500 extends out of the connecting beam 1 and abuts against the bottom of the sill beam 3. Each of the second connectors 600 passes through the corresponding threaded sleeve 500 to connect the connecting bracket 201, the connecting beam 1 and the sill beam 3 together.

[0074] At this point, it is understandable that by setting a threaded sleeve 500 or a threaded pipe 300 inside the connecting beam 1, the connection between the first connector 400 and the second connector 600 can be facilitated to achieve the corresponding connection function and thus realize the assembly of the battery pack 2. In specific implementation, the aforementioned threaded sleeve 500 or threaded pipe 300 can both adopt existing pipe structures with connecting threads formed on the inner wall, and the aforementioned first connector 400 and second connector 600 can use bolts of appropriate length, while a projection-welded nut or similar structure can be set at the sill beam 3 to connect with the second connector 600.

[0075] In this embodiment, the aforementioned front subframe 4 is specifically located below the front engine compartment in the overall vehicle body, while the rear subframe 5 is located below the rear floor in the vehicle body. Furthermore, by placing the connecting beams 1 on both sides between the front and rear subframes, the vehicle in this embodiment exhibits a structure similar to a monocoque chassis.

[0076] At this point, it should be noted that existing traditional car bodies mainly include unibody and body-on-frame construction, and the differences between the two mainly lie in structure, weight, and ride comfort.

[0077] A non-load-bearing chassis typically consists of two parts: a frame beam and a body. The frame mounts components such as the engine, transmission, and suspension, while the body only provides a closed environment for passengers and does not bear loads. Non-load-bearing chassis are also heavier, have a higher center of gravity, and offer relatively poor handling and lower comfort on paved roads. However, the frame beam provides excellent rigidity and chassis strength, resulting in good shock absorption, stability, and safety. Furthermore, they are easier to modify.

[0078] Unibody construction lacks a rigid frame; all vehicle components are directly mounted to the body, which acts as the load-bearing structure, absorbing various forces. Unibody construction is also lighter, has a lower center of gravity, offers better handling, is easier to assemble, and provides greater comfort on paved roads. However, unibody construction has weaker torsional rigidity and load-bearing capacity. Furthermore, due to the lack of a rigid frame, reinforcement is typically limited to the front, sides, rear, and floor, resulting in relatively lower overall safety.

[0079] Therefore, for new energy vehicles, especially pure electric vehicles, in order to fully utilize the advantages of the monocoque body and improve the shortcomings of the monocoque body, this embodiment creatively connects the two side connecting beams 1 between the front and rear subframes in the vehicle frame, and thus makes the chassis 200 of this embodiment also a chassis structure developed based on the monocoque body.

[0080] It is understandable that by adopting a monocoque body structure with front and rear subframes, this embodiment can utilize the lower weight of the monocoque body to achieve vehicle lightweighting, thereby improving the overall vehicle range. Simultaneously, the front and rear subframes are connected as a single unit by the connecting beams 1 on both sides, and the front subframe 4, rear subframe 5, and the connecting beams 1 on both sides together define the... Figure 3 The battery pack mounting space Q shown is used to house the battery pack 2. Through the connection of the connecting beam 1, it forms a ring-shaped frame structure for the battery pack, allowing the battery pack 2 to move together with the chassis 200 of the ring frame during a vehicle collision. This reduces the impact on the battery pack 2 during a collision, thereby increasing its collision safety.

[0081] In this embodiment, based on the connection of the connecting beam 1 to the front and rear subframes, the front subframe 4 has front subframe longitudinal beams 401 disposed on the left and right sides, and the rear subframe 5 has rear subframe longitudinal beams 501 disposed on the left and right sides. In a preferred embodiment, in the left and right direction of the whole vehicle, the connecting beams 1 on each side are also located on the side of the front subframe longitudinal beam 401 and the rear subframe longitudinal beam 501 closer to the outside of the vehicle.

[0082] At this point, the connecting beams 1 on each side are as follows: Figure 2 as well as Figure 3 As shown, the front subframe longitudinal beam 401 and the rear subframe longitudinal beam 501 located on the same side near the outside of the vehicle, in this embodiment, help to achieve the Y-direction cross-sectional change of the front and rear parts of the monocoque body, and can meet the matching design requirements between the chassis and the body frame in the monocoque body.

[0083] Furthermore, in this embodiment, a front crossbeam 404 is also provided at the rear of the front subframe 4. The front ends of the connecting beams 1 on both sides are connected to the left and right ends of the front crossbeam 404, respectively, and the rear ends of the connecting beams 1 on both sides are specifically connected to the front ends of the longitudinal beams 501 of the rear subframe on both sides. In this way, the aforementioned front crossbeam 404, rear subframe 5, and connecting beams 1 on both sides together define the aforementioned battery pack mounting space Q for mounting the battery pack 2.

[0084] It should be noted that, as a preferred embodiment, the aforementioned front crossbeam 404 can, for example, be part of the front subframe 4, specifically a rear crossbeam of the front subframe located at the rear end of the front subframe 4. However, besides serving as a rear crossbeam of the front subframe, the front crossbeam 404 in this embodiment can also be connected between the front ends of the two connecting beams 1 and be independent of the beam structure of the front subframe 4. In this case, while the front crossbeam 404 is integrated with the two connecting beams 1 to form an integral frame structure, it is also connected to the front subframe 4 to achieve the connection between the two connecting beams 1 and the front subframe 4.

[0085] Taking the previous example of the crossbeam 404 being the rear crossbeam of the front subframe, in specific implementation, the front subframe 4 in this embodiment can be derived from the front subframe structure in existing monocoque chassis. Generally speaking, such as... Figure 7 As shown, the front subframe 4 has front subframe longitudinal beams 401 on the left and right sides respectively. The front subframe front crossbeam 402 and the front subframe middle crossbeam 403 are connected between the two front subframe longitudinal beams 401, and the rear ends of the two front subframe longitudinal beams 401 are connected to the front crossbeam 404, which serves as the rear crossbeam of the front subframe.

[0086] It should be noted that when the front crossbeam 404 is set independently of the front subframe 4, its connection to the front subframe 4 is generally also connected to the rear end of the longitudinal beams 401 of the front subframe on both sides. Moreover, when the front crossbeam 404 is set independently of the front subframe 4, the rear crossbeams of the front subframe 4 can be selectively set as needed.

[0087] Continue as Figure 7 As shown, in this embodiment, a front subframe anti-collision beam 405 is also provided at the front end of the front subframe 4, which is connected to the longitudinal beams 401 of the front subframe on both sides. The front subframe anti-collision beam 405 is specifically connected to the front end of the longitudinal beams 401 of the front subframe on both sides through the front subframe energy absorption box 406.

[0088] Furthermore, as a preferred embodiment, in the front subframe 4 of this embodiment, the front crossbeam 404 also structurally includes a central crossbeam body 404a and extension sections 404b connected to the left and right ends of the crossbeam body 404a. The rear ends of the longitudinal beams 401 of each side of the front subframe are connected to the crossbeam body 404a, and the extension sections 404b at each end extend outwards along the left-right direction of the vehicle. The front ends of the connecting beams 1 on each side are also specifically connected to the extension sections 404b on the same side.

[0089] It is understandable that the extension section 404a in the front crossbeam 404 facilitates the connection with the connecting beams 1 on both sides. Meanwhile, see also... Figure 2 or Figure 3As shown, by connecting the longitudinal beams 401 of the front subframe on the left and right sides of the front subframe 4 with the main body 404a of the crossbeam in the front crossbeam 404, it also helps to realize the Y-direction (left-right direction of the whole vehicle) cross section change of the front of the load-bearing body. That is, the connecting beams 1 on each side and the longitudinal beams 401 of the front subframe are not on the same straight line, but are bent at the connection position between the two, thereby making the Y-direction cross section size of the body at the front subframe 4 smaller.

[0090] The aforementioned change in the Y-direction section of the front of the vehicle body is fundamentally different from the fact that the Y-direction section of the frame beam in a non-load-bearing vehicle body is basically the same front and back. Moreover, this embodiment satisfies the matching design requirements between the chassis and the body frame in a load-bearing vehicle body by changing the size of the aforementioned Y-direction section of the front of the vehicle body.

[0091] In this embodiment, it is still combined with Figure 3 and Figure 8 As shown, in a preferred embodiment, each side connecting beam 1 has an inclined connecting section 1a at its rear end. Each side connecting section 1a is connected to the front end of the rear subframe longitudinal beam 501 on the same side through the connecting section 1a. Furthermore, the distance between the two connecting sections 1a gradually decreases from front to back in the front-rear direction of the vehicle.

[0092] At this point, by setting an inclined connecting section 1a at the rear end of each side connecting beam 1, it is also possible to facilitate the connection between the connecting beam 1 and the rear subframe longitudinal beam 501. Furthermore, the distance between the two connecting sections 1a is set to gradually decrease from front to back. Similar to the design of the aforementioned extended section 404b, it is also possible to realize the Y-direction section change of the rear of the load-bearing body, so as not only to meet the matching design requirements between the chassis and the body frame in the load-bearing body, but also to become one of the main differences from the non-load-bearing body.

[0093] In this embodiment, it is worth noting that, in specific implementation, the connecting beams 1 on both sides can be, for example, an integrally formed beam structure, specifically an integral closed structure, and its cross-section can be as follows: Figure 9 As shown in the diagram. Furthermore, at this time, the connecting beam 1 can also be integrally formed with the front crossbeam 404 and the rear subframe longitudinal beam 501 in the front and rear subframes. It can be understood that by utilizing the closed section, the structural strength of the connecting beam 1 can be guaranteed by leveraging the high strength of the cavity structure. Furthermore, by integrally forming the connecting beam 1 with the front and rear subframes, the integrated front subframe 4, connecting beam 1, and rear subframe 5 can achieve better structural strength and rigidity.

[0094] Of course, besides being a one-piece structure, the connecting beam 1 in this embodiment can also adopt other structures, such as a welded steel profile structure, an extruded aluminum alloy profile structure, etc. Furthermore, in addition to being integrally connected to the front crossbeam 404 and the rear subframe longitudinal beam 501, in specific implementations, the connecting beam 1 can also be detachable. In this case, the aforementioned detachable method can generally adopt a bolted structure, and combined with... Figure 13 As shown, the connection position can be located at point G near the four corners, and the connection direction can be X (front and rear of the vehicle) or Y. The connection method can be plug-in or flat docking.

[0095] Of course, to ensure the reliability of force transmission in connecting beam 1, the preferred connection direction is the X-direction. Furthermore, to ensure ease of operation, a flat plate butt joint connection is preferred. Thus, in Figure 13 The positions indicated by each label B can be connected by bolted structures along the X direction using a flat plate butt joint method to set up the connecting beams 1 on each side.

[0096] In this embodiment, see continue to refer to Figure 8 As shown, in specific implementation, the rear subframe 5 can also refer to the rear subframe structure in the existing load-bearing body. In terms of structure, as a preferred implementation, in addition to being similar to the existing rear subframe structure, the rear subframe front crossbeam 502 and the rear subframe rear crossbeam 503 are connected between the rear subframe longitudinal beams 501 on both sides. Furthermore, at the position where the rear subframe longitudinal beams 501 on both sides are connected to the connecting beam 1, that is, at the position where the rear subframe longitudinal beams 501 on both sides are connected to the connecting section 1a, a rear crossbeam 504 is also connected.

[0097] At this point, based on the arrangement of the rear crossbeam 504, the aforementioned battery pack 2 is specifically positioned between the rear crossbeam 504, the front crossbeam 404, and the connecting beams 1 on both sides. Furthermore, based on the arrangement of the front crossbeam 404 and the rear crossbeam 504, in specific implementation, battery pack mounting points can be set on the front crossbeam 404 and the rear crossbeam 504 respectively. Simultaneously, a front mounting bracket 202 and a rear mounting bracket 203 are respectively provided at the front and rear ends of the battery pack 2. This allows the front end of the battery pack 2 to be bolted to the front crossbeam 404, and the rear end of the battery pack 2 to be bolted to the rear crossbeam 504, thus ensuring the stability of the battery pack 2 after assembly in the vehicle body.

[0098] It is understandable that by setting the rear crossbeam 504 as described above, not only can the structural strength and rigidity of the front of the rear subframe 5 be increased, and a mounting point for the rear of the battery pack be provided, but also, by making the battery pack mounting space Q form between the rear crossbeam 504, the front crossbeam 404 and the connecting beams 1 on both sides, this embodiment also helps to make the formed ring frame structure a rigid encircling structure that is adapted to the shape of the battery pack, thereby better improving the collision safety of the battery pack.

[0099] In addition, the rear crossbeam 504 is positioned between the connection points of the two side connecting sections 1a and the rear subframe longitudinal beam 501. By connecting the end of the rear crossbeam 504 to the connection points between the connecting sections 1a on each side and the rear subframe longitudinal beam 501, it not only helps to ensure the connection strength of the rear crossbeam 504, but also helps to better improve the dynamic stiffness of the front part of the rear subframe 5.

[0100] In specific implementations, the rear crossbeam 504 of this embodiment can, for example, adopt an integrally molded closed structure to achieve higher structural strength. Furthermore, to further increase the strength of the rear crossbeam 504, and for ease of rear-end battery pack installation, combined with... Figure 10 As shown, the rear crossbeam 504 in this embodiment can be designed to be arched downwards along the vertical direction of the vehicle, and has a straight section 5041 in the middle and bent sections 5042 on the left and right sides. The bent sections 5042 on both sides are inclined upwards and are connected to the rear subframe longitudinal beam 501 on the same side.

[0101] Still by Figure 8 As shown, as a preferred embodiment, unlike the existing rear subframe structure, this embodiment has a rear subframe anti-collision beam 505 connected to the longitudinal beams 501 of the two rear subframes at the rear end of the rear subframe 5.

[0102] Thus, it is understandable that by setting a rear subframe anti-collision beam 505 at the rear end of the rear subframe 5, it can improve the rear impact force transmission performance of the rear subframe 5. This allows the impact force to be better dispersed to the longitudinal beams 501 on both sides of the rear subframe via the rear subframe anti-collision beam 505, and then transmitted forward along the longitudinal beams 501, avoiding single-point force application and excessive deformation due to difficulty in dispersing the impact force. Furthermore, by setting the aforementioned rear subframe anti-collision beam 505, it can also serve as a pedestrian anti-intrusion beam at the rear of the vehicle, thereby improving safety during reversing.

[0103] It should be noted that, in specific implementation, it should be combined with Figure 11 As shown, the aforementioned rear subframe anti-collision beam 505 can structurally borrow from the front subframe anti-collision beam 405 in the front subframe 4, and it can be made of sheet metal stamping structure or aluminum alloy extruded profile. Furthermore, based on the aforementioned rear subframe anti-collision beam 505, preferably, the rear ends of the longitudinal beams 501 on both sides of the rear subframe can also be connected to the rear subframe energy-absorbing boxes 506, so that the rear subframe anti-collision beam 505 is specifically connected to the energy-absorbing boxes 506 on both sides of the rear subframe.

[0104] At this point, the aforementioned rear subframe energy-absorbing box 506, like the front subframe energy-absorbing box 406 in the front subframe 4, can adopt the conventional energy-absorbing box structure used in existing vehicle bodies. Furthermore, it is understandable that by connecting the rear subframe rear bumper beam 505 to the rear subframe longitudinal beam 501 via the rear subframe energy-absorbing box 506, it can absorb energy through crumple zones, thereby further improving the vehicle's rear-end collision safety.

[0105] In addition, it should be noted that the aforementioned rear subframe anti-collision beam 505 not only works in conjunction with the front subframe anti-collision beam 405 to enable the chassis 200 of this embodiment to achieve better frontal and rear collision safety performance, but also, when the chassis 200 of this embodiment is assembled into the vehicle, the aforementioned front subframe anti-collision beam 405 and rear subframe anti-collision beam 505 can form an upper and lower double anti-collision beam collision force transmission design together with the front and rear anti-collision beams in the upper body frame, thereby providing a super strong double protection effect.

[0106] In this embodiment, combined with Figure 8 and Figure 12 As shown, in a preferred embodiment, mounting holes 1c are also provided at the positions where the rear subframe longitudinal beams 501 and connecting beams 1 are connected on both sides, and bushings 1d are provided in each mounting hole 1c. At the same time, the battery pack 2 is also connected to the vehicle frame 100 through the bushings 1d on each side.

[0107] At this point, by setting mounting holes 1c at the location where the rear subframe longitudinal beam 501 and the connecting beam 1 connect, and by connecting the battery pack 2 to the vehicle frame 100 through the bushing 1d inside the mounting holes 1c, a Z-axis support can be formed between the battery pack 2 and the vehicle frame 100, which helps to improve the overall rigidity of the vehicle frame 100. In specific implementation, the aforementioned bushing 1d can be an existing rubber bushing product or a hydraulic bushing product.

[0108] Still by Figure 2 , Figure 3 and combined Figure 13 As shown in the illustration, in this preferred embodiment, the side connecting beam 1 facing outwards in the left-right direction of the vehicle can be further connected to a side step mounting plate 6. The side step mounting plate 6 extends along the front-rear direction of the vehicle, and a side step mounting surface 6a is provided on the top of each side step mounting plate 6.

[0109] At this point, by installing a side step panel and side step trim on the side step mounting surface 6a, a side step that assists the driver and passengers in getting in and out of the vehicle can be formed. Furthermore, by connecting the aforementioned side step mounting plate 6 to the outside of the connecting beam 1, it can be understood that it serves as both a base for side step assembly and a side impact energy-absorbing structure, thus achieving a dual-purpose design, saving on the side step mounting frame, and also contributing to the lightweight design of the vehicle body.

[0110] In practice, it should be noted that the side tread mounting plates 6 on each side can be detachably connected to the connecting beam 1 on the same side via connecting components. This allows the side tread mounting plates 6 to be detachably connected to the connecting beam 1 on the same side via connecting components, which facilitates the assembly of the side tread mounting plates 6 and also makes it easier to maintain and replace them later.

[0111] Of course, in addition to the above-mentioned detachable configuration, in specific implementations, this embodiment can also make the side step mounting plates 6 on each side integrally formed with the connecting beam 1 on the same side. In this way, the side step mounting plates 6 and the connecting beam 1 are integrally formed, which can reduce the manufacturing cost of the connecting beam 1 and the side step mounting plates 6, and can also better ensure the structural strength of the connecting beam 1 and the side step mounting plates 6, so as to improve the overall rigidity of the chassis 200.

[0112] The detachable side step mounting plate 6 can be made of steel or aluminum alloy profiles, and the connecting components can typically be bolted to secure the side step mounting plate 6 to the connecting beam 1. Alternatively, the side step mounting plate 6 and the connecting beam 1 can be integrally formed, for example, both can be made of steel or aluminum alloy profiles, or they can be made of rolled steel.

[0113] like Figure 14 As shown, this is an exemplary structure when both the side step mounting plate 6 and the connecting beam 1 are made of aluminum alloy profiles. In this structure, to increase the structural strength of the connecting beam 1 and the side step mounting plate 6, transverse reinforcing ribs 1b and vertical reinforcing ribs 6c can be provided in both. Simultaneously, to improve the collision energy absorption effect of the side step mounting plate 6 during a side collision, a collapsible guide rib 6b extending in a bent shape can also be provided at the bottom of the side step mounting plate 6.

[0114] At this time, the vertical reinforcing rib 6c and the crash guide rib 6b are used for the reinforcing rib at the side step mounting plate 6. While appropriately increasing the structural strength at the position of the side step mounting plate 6, it also enables the side step mounting plate 6 to have good crash energy absorption ability, so that one side of the side step mounting plate 6 becomes a crash energy absorption area, which helps to improve the side impact energy absorption effect. Different from one side of the side step mounting plate 6, on one side of the connecting beam 1, through the arrangement of the transverse reinforcing rib 1b, by using the transverse supporting effect of the transverse reinforcing rib 1b, the connecting beam 1 can have strong supporting stiffness when the vehicle has a side impact. Furthermore, it can make one side of the connecting beam 1 become a rigid frame area to better protect the battery pack located in the battery pack installation space Q.

[0115] In this embodiment, in addition to as Figure 14 shown, making the integrally formed connecting beam 1 and side step mounting plate 6 have different cross-sectional structures. Of course, in specific implementation, the wall thickness on one side of the connecting beam 1 can also be made greater than that on one side of the side step mounting plate 6. In this way, it can further increase the strength on one side of the connecting beam 1 to make full use of the crash energy absorption on one side of the side step mounting plate 6 to protect the battery pack inside the connecting beam 1.

[0116] Such as Figure 15 shown is an exemplary cross-sectional form when the above-mentioned side step mounting plate 6 and connecting beam 1 adopt a steel rolling structure. It should be noted that when adopting the rolling structure, the integrally formed side step mounting plate 6 and connecting beam 1 generally adopt Figure 15 the "day" - shaped cross-section shown, and can be connected by combining laser welding and spot welding. However, in addition to adopting the "day" - shaped cross-section, of course, it is also possible to make the rolled side step mounting plate 6 and connecting beam 1 adopt other cross-sectional forms.

[0117] The vehicle frame of this embodiment adopts the above structure. By setting the chassis 200 composed of the front and rear subframes and the connecting beam 1 connecting the two, and making the battery pack 2 arranged in this chassis 200, when the vehicle has a collision, this embodiment can make the battery pack 2 slide away from the body frame 100 as a whole with the chassis 200, reducing the collision impact on the battery pack 2, and thus increasing the safety of the battery pack 2 during a side impact of the vehicle.

[0118] In addition, on the basis of setting the two connecting beams 1, especially by connecting the two connecting beams 1 between the front and rear subframes, this embodiment can connect the front and rear subframes via the two connecting beams 1 on the basis of the traditional unibody structure. In this way, by adopting the unibody structure with front and rear subframes, taking advantage of the characteristic of the unibody structure having a relatively small weight, the lightweight of the vehicle body can be achieved, and the cruising range of the whole vehicle can be improved.

[0119] Furthermore, by setting up connecting beams 1 on both sides, the front and rear subframes are connected, and the installation space of the battery pack 2 is defined by the front crossbeam 404, the rear crossbeam 504, and the connecting beams 1 on both sides. In this embodiment, the connecting beams 1 can also form a ring-shaped frame structure for the battery pack. In the event of a collision, the battery pack 2 can move together with the ring-shaped frame structure, which can reduce the impact of the collision on the battery pack 2, increase the collision safety of the battery pack 2, and thus improve the overall vehicle safety.

[0120] It should be noted that in the chassis 200 of this embodiment, since the front and rear ends of the chassis 200 are still front and rear subframes, the subframe structure has a smaller Y-axis cross-section than the frame in a non-load-bearing body, and the longitudinal beams at the subframe positions use a curved longitudinal beam structure, making the chassis 200 of this embodiment a structural innovation in the form of a subframe, which is significantly different from the conventional non-load-bearing frame beam structure. Specifically, in this embodiment, the front and rear subframes are still separate units, which are simply the addition of connecting beams 1 between the front and rear on the basis of the front and rear subframes in a load-bearing body, and are not the integrated beam structure in a non-load-bearing body.

[0121] Of course, in the implementation where the connecting beam 1 is connected to the front and rear subframes, precisely because of the integrated structure of the front and rear subframes connected by the connecting beam 1, this embodiment, as mentioned above, not only utilizes the characteristics of the monocoque body structure to reduce vehicle weight and increase the vehicle's range, but also forms a ring-shaped protective frame for the battery pack, thereby better improving the collision safety of the battery pack 2. Therefore, it not only improves upon the shortcomings of the monocoque body structure but also possesses the advantages of the non-monocoque body structure, significantly enhancing the overall quality of the vehicle and demonstrating excellent practicality.

[0122] Example 2

[0123] This embodiment relates to a vehicle, specifically a new energy vehicle equipped with a battery pack, and more specifically, the vehicle is preferably a pure electric vehicle, and the vehicle frame of Embodiment 1 is provided in the vehicle.

[0124] It should be noted that, based on the vehicle frame in Embodiment 1, the vehicle in this embodiment is assembled in the same way as the existing monocoque body assembly method, with the chassis 200 at the bottom and the body frame 100 at the top, and the upper body frame is the main load-bearing body of the vehicle. Furthermore, in the event of a collision, the body frame 100, along with the front and rear subframes and connecting beams 1 in the chassis 200, participate in the absorption and transmission of the collision force, unlike in a non-monocoque body where the frame beam alone transmits force and absorbs energy.

[0125] The vehicle in this embodiment uses the vehicle frame shown in Embodiment 1. On the one hand, by placing the battery pack 2 in the chassis 200, it helps to improve the safety of the battery pack 2 in a side collision. On the other hand, the specific arrangement of the connecting beams 1 on both sides, especially by connecting the connecting beams 1 between the front and rear subframes, allows the front and rear subframes to be connected via the connecting beams 1 on both sides, based on the traditional monocoque body. This not only helps to achieve vehicle weight reduction and improve the overall vehicle range, but also reduces the impact of collisions on the battery pack 2, increases the collision safety of the battery pack 2, and helps to improve the overall vehicle safety quality, thus having good practicality.

[0126] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle frame, characterized in that: Includes a body frame (100) and a chassis (200) connected to the bottom of the body frame (100). The chassis (200) includes a front subframe (4), a rear subframe (5), and a connecting beam (1) connecting the front subframe (4) and the rear subframe (5). The connecting beam (1) consists of two beams located on the left and right sides, and the battery pack (2) is installed in the space defined by the front subframe (4), the rear subframe (5), and the connecting beams (1) on both sides. The battery pack (2) is provided with connecting brackets (201) on the left and right sides respectively. Each connecting bracket (201) is connected to the lower part of the connecting beam (1) on the same side through a connector. The connecting brackets (201) on the left and right sides of the battery pack (2) are fixed to the outer frame of the battery pack (2).

2. The vehicle frame according to claim 1, characterized in that: Each of the connecting members on each side includes a first connecting member (400) that connects the battery pack (2) and the connecting beam (1) together, and a second connecting member (600) that connects the battery pack (2), the connecting beam (1) and the vehicle frame (100) together.

3. The vehicle frame according to claim 2, characterized in that: Both the first connector (400) and the second connector (600) are screwed together; and / or, The second connector (600) is provided near the end of the connecting beam (1), and the second connector (600) is provided near the front and rear ends of the connecting beam (1) on each side.

4. The vehicle frame according to claim 1, characterized in that: The front subframe (4) has front subframe longitudinal beams (401) on the left and right sides respectively, and the rear subframe (5) has rear subframe longitudinal beams (501) on the left and right sides respectively. In the left-right direction of the vehicle, the connecting beams (1) on each side are located on the side of the front subframe longitudinal beam (401) and the rear subframe longitudinal beam (501) that are close to the outside of the vehicle.

5. The vehicle frame according to claim 4, characterized in that: The front subframe (4) is provided with a front crossbeam (404) at the rear side, and the front ends of the connecting beams (1) on both sides are connected to the longitudinal beams (401) of each front subframe through the front crossbeam (404). The rear end of each connecting beam (1) is connected to the front end of the rear subframe longitudinal beam (501) on the same side, and a rear cross beam (504) is connected between the rear subframe longitudinal beam (501) and the connecting beam (1) on both sides. The battery pack (2) is disposed within the space defined by the front crossbeam (404), the rear crossbeam (504) and the connecting beams (1) on both sides.

6. The vehicle frame according to claim 5, characterized in that: The front crossbeam (404) has a crossbeam body (404a) and extended sections (404b) located on the left and right sides of the crossbeam body (404a). The front subframe longitudinal beams (401) on both sides are connected to the crossbeam body (404a), and the connecting beams (1) on both sides are respectively connected to the extended sections (404b) on the corresponding sides; and / or, Each side of the connecting beam (1) has an inclined connecting section (1a) at its rear end. Each side of the connecting beam (1) is connected to the front end of the rear subframe longitudinal beam (501) on the same side through the connecting section (1a). The distance between the connecting sections (1a) on both sides gradually decreases from front to back in the front-rear direction of the whole vehicle.

7. The vehicle frame according to claim 5, characterized in that: Mounting holes (1c) are provided at the positions where the rear subframe longitudinal beams (501) and the connecting beams (1) on both sides are connected. Bushings (1d) are provided within the mounting holes (1c), and the battery pack (2) is connected to the vehicle frame (100) via the bushings (1d); and / or, The rear crossbeam (504) is arched downward along the vertical direction of the vehicle and has a straight section (5041) in the middle and bent sections (5042) on the left and right sides. Both bent sections (5042) are inclined upward, and the rear crossbeam (504) is connected to the rear subframe longitudinal beam (501) through the bent sections (5042).

8. The vehicle frame according to any one of claims 4 to 7, characterized in that: The rear end of the rear subframe (5) is provided with a rear subframe anti-collision beam (505), and the rear ends of the longitudinal beams (501) of the rear subframe on both sides are provided with rear subframe energy-absorbing boxes (506). The rear subframe anti-collision beam (505) is connected to the rear subframe energy-absorbing boxes (506) on both sides; and / or, In the left-right direction of the vehicle, each side of the connecting beam (1) is connected to a side step mounting plate (6) on the side facing outward. The side step mounting plate (6) extends along the front-rear direction of the vehicle and has a side step mounting surface (6a) on the top of the side step mounting plate (6).

9. A vehicle, characterized in that: The vehicle has the vehicle frame as described in any one of claims 1 to 8.

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