Subframe, subframe and dual-motor assembly arrangement structure, and vehicle

Abstract

A subframe, a subframe and dual-motor assembly arrangement structure, and a vehicle. The subframe comprises at least two first longitudinal beams (24) extending in a first direction, and a first cross member (21), a second cross member (22) and a third cross member (23) all extending in a second direction and sequentially arranged in the first direction; the second cross member (22) and the third cross member (23) are both located between the two first longitudinal beams (24) and define a closed inner frame together with the two first longitudinal beams (24); the second cross member (22) is provided with a gap (201); the first cross member (21) is located on the side of the second cross member (22) away from the third cross member (23); the first cross member (21) is connected to the second cross member (22) or the first longitudinal beams (24); the extension range of the first cross member (21) in the second direction covers the gap (201). In the subframe, the length dimension of the subframe itself is substantially not increased and thus the battery arrangement space is not occupied, the overall strength of the subframe can be enhanced, the torsional resistance of the subframe can be improved, and the power specifications of drive motors that can be carried on the subframe can be increased, thereby meeting the requirement of carrying a high-power dual-motor assembly (1) on the subframe.

Description

A subframe, a subframe and a dual-motor assembly arrangement, and a vehicle.

[0001] This application claims priority to Chinese Patent Application No. 202410794920.9, filed on June 19, 2024, entitled "A Subframe, Arrangement Structure of Subframe and Dual Motor Assembly and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of automotive technology, specifically to a subframe, a subframe and a dual-motor assembly arrangement structure, and a vehicle. Background Technology

[0003] With the development of electric vehicles, electric dual-drive systems, where each rear wheel is driven by a separate drive motor, are being considered for vehicle models, enabling four-wheel drive. The subframe needs to house the two drive motors, along with components such as the dual-motor assembly and steering gear. The power of the drive motor is a crucial factor determining the vehicle's performance; increasing vehicle power requires increasing the drive motor's power. The higher the output power of the drive motor, the greater the strength requirement for the subframe. Summary of the Invention

[0004] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0005] In view of this, this application aims to provide a subframe that, through structural design, can improve the overall strength of the subframe, enhance its torsional resistance, and increase the power specifications of the drive motors it can accommodate, without significantly increasing the subframe's own length or encroaching on battery placement space, thus meeting the requirements for a high-power dual-motor assembly mounted on the subframe.

[0006] This application provides a subframe, including at least two first longitudinal beams extending along a first direction, and a first crossbeam, a second crossbeam, and a third crossbeam that all extend along a second direction and are arranged sequentially along the first direction. The second crossbeam and the third crossbeam are both located between the two first longitudinal beams, and the second crossbeam, the third crossbeam, and the two first longitudinal beams form an annular inner frame.

[0007] The second crossbeam has a notch; the first crossbeam is located on the side of the second crossbeam away from the third crossbeam, and the first crossbeam is connected to the second crossbeam or the first longitudinal beam, and the extension of the first crossbeam in the second direction covers the notch.

[0008] In one possible implementation, the second crossbeam includes two crossbeam segments that are respectively connected to the two first longitudinal beams and have a spacing between them, with a gap formed between the two crossbeam segments;

[0009] The subframe also includes a connecting crossbeam that connects the two crossbeam sections.

[0010] In one possible implementation, the connecting beam is located above the second beam and is detachably connected to the beam segment.

[0011] In one possible implementation, the first crossbeam includes a main beam body and a connecting beam segment protruding from the main beam body. The main beam body is connected to the second crossbeam through the connecting beam segment, and the top surface of the connecting beam segment is lower than the top surface of the main beam body and the top surface of the second crossbeam.

[0012] In one possible implementation, a support beam is also included, located at the lower part of the annular inner frame, for supporting components located within the annular inner frame.

[0013] In one possible implementation, the support beam is a second longitudinal beam extending along a first direction, and the second longitudinal beam has at least two arranged along a second direction, respectively located at both ends of the annular inner frame in the second direction.

[0014] This application also provides an arrangement structure for a subframe and a dual-motor assembly, including a dual-motor assembly and a subframe as described in any of the above, wherein the dual-motor assembly is connected to the subframe.

[0015] In one possible implementation, the dual-motor assembly includes a motor controller and a motor body, the motor body including a motor and a gearbox, the motor body being located within an annular inner frame, and the gearbox extending at least partially into a notch and connected to a second crossbeam.

[0016] In one possible implementation, the motor controller is located above the motor body, and the part of the gearbox located in the notch has a front connecting shaft protruding on both sides along the second direction. The front connecting shaft passes through the front suspension embedded in the inner wall of the notch.

[0017] And / or, a rear connecting shaft protrudes from the motor body and is arranged in a first direction, and a rear suspension connected to the rear connecting shaft is embedded in the third crossbeam.

[0018] In one possible implementation, a steering unit is also included, which is located in front of the dual-motor assembly in the first direction and is positioned above the front end of the subframe and supported by the front end of the subframe.

[0019] In one possible implementation, the first crossbeam includes a main beam body and a connecting beam segment protruding from the main beam body. The main beam body is connected to the second crossbeam via the connecting beam segment. The top surface of the connecting beam segment is lower than the top surface of the main beam body and the top surface of the second crossbeam to form a recess. The steering gear is located in the recess and is supported by the connecting beam segment.

[0020] This application also provides a vehicle having the above-mentioned subframe, or an arrangement having the above-mentioned subframe and dual motor assembly.

[0021] The arrangement structure provided in this application includes a subframe comprising an annular inner frame with a notch and a first crossbeam located outside the annular inner frame. The first crossbeam is positioned adjacent to and extends in the same direction as the second crossbeam, essentially placing them side-by-side. The first crossbeam is connected to either the second crossbeam or the first longitudinal beam. The extension range of the first crossbeam in the second direction covers the notch on the second crossbeam, effectively closing the notch. This not only creates a closed frame structure for the subframe as a whole but also encloses the second crossbeam within the outer frame. Therefore, this subframe exhibits overall structural stability and high strength, improving its torsional resistance. Compared to the conventional U-shaped subframe in existing technologies, it boasts greater strength and torsional resistance. When equipped with a drive motor, such as a dual-motor assembly (an integration of two drive motors and a transmission), it can accommodate a higher-power dual-motor assembly to meet the vehicle's greater power demands.

[0022] Meanwhile, because there is a notch on the second crossbeam, some of the components mounted on the subframe can extend into the notch and intersect with the second crossbeam. In this way, compared with the frame structure with three full crossbeams, the length of the subframe in the first direction can be shortened, so that the overall length of the subframe with three crossbeams in the first direction is basically the same as the length of the U-shaped subframe in the prior art. This subframe will not increase the space occupied by the vehicle body in terms of length, which is conducive to the placement of large-volume and high-capacity batteries on the vehicle body.

[0023] As can be seen, the subframe provided in this application has three crossbeams and is a closed frame structure with high overall strength. By setting the notch, it can meet the requirements of increasing the specifications of mounted components such as dual motor assemblies, while minimizing the size in the first direction, i.e. the length of the vehicle body, reducing the space occupied in the length of the vehicle body, which is conducive to arranging large-volume and high-capacity batteries on the vehicle body.

[0024] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood. Attached Figure Description

[0025] Figure 1 shows a schematic diagram of the subframe at the first angle in this embodiment;

[0026] Figure 2 shows a second angle schematic diagram of the subframe in an embodiment of this application;

[0027] Figure 3 shows a schematic diagram of the subframe from a third angle in an embodiment of this application;

[0028] Figure 4 shows a first-angle schematic diagram of the arrangement structure of the subframe and dual-motor assembly in an embodiment of this application;

[0029] Figure 5 shows a second-angle schematic diagram of the arrangement structure of the subframe and dual-motor assembly in an embodiment of this application;

[0030] Figure 6 shows a schematic diagram of the dual-motor assembly in an embodiment of this application.

[0031] In Figure 1-6: 1. Dual motor assembly; 11. Transmission; 12. Front connecting shaft; 13. Rear connecting shaft; 14. Motor controller; 15. Drive motor body; 2. Subframe; 21. First crossbeam; 211. Main beam; 212. Connecting beam segment; 22. Second crossbeam; 221. Crossbeam segment; 201. Notch; 23. Third crossbeam; 24. First longitudinal beam; 25. Connecting crossbeam; 26. Second longitudinal beam; 27. Front mount; 28. Rear mount; 3. Steering gear; 4. Multi-link suspension; 5. Drive shaft. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0033] First, it should be noted that spatial relationship terms, such as "in front" and "above," are adapted to the actual orientation of the product in its usage state for ease of description. When the orientation of the attached diagram changes, or when the actual orientation of the product changes, the spatial relationship terms should also be interpreted accordingly, without intending to limit them to a single direction.

[0034] Please refer to Figures 1-6. This application provides a subframe 2 for connection to the vehicle body and for mounting multiple components, such as a drive motor, shock absorbers, and steering gear, on the vehicle body. In this application, the subframe 2 includes a first crossbeam 21, a second crossbeam 22, a third crossbeam 23, and a first longitudinal beam 24. At least two first longitudinal beams 24 are provided, both extending along a first direction and spaced apart in a second direction. The first crossbeam 21, second crossbeam 22, and third crossbeam 23 are arranged sequentially in the first direction and all extend along the second direction. The second crossbeam 22 and third crossbeam 23 are both located between two first longitudinal beams 24, and their ends are respectively connected to the two first longitudinal beams 24. The second crossbeam 22, third crossbeam 23, and the aforementioned pair of first longitudinal beams 24 form an annular frame, which can be referred to as the annular inner frame. When the subframe is mounted on the vehicle body, the first direction can be the length direction of the vehicle body, and the second direction can be the width direction of the vehicle body.

[0035] The second crossbeam 22 has a notch 201. The first crossbeam 21 is located on the side of the second crossbeam 22 away from the third crossbeam 23, i.e., on the outer side of the annular inner frame. The first crossbeam 21 is connected to the second crossbeam 22 or the first longitudinal beam 24. For example, the two ends of the first crossbeam 21 are respectively connected to the two first longitudinal beams 24, or the first crossbeam 21 is directly connected to the second crossbeam 22, or the first crossbeam 21 is connected to the second crossbeam 22 through a connecting beam arranged along the first direction. And the extension range of the first crossbeam 21 in the second direction covers the notch 201 on the second crossbeam 22. Thus, the subframe 2 as a whole has a closed annular frame structure. In some embodiments, specifically, if the first crossbeam 21 is directly connected to the second crossbeam 22, that is, the first crossbeam 21 and the second crossbeam 22 are in contact, it is equivalent to the first crossbeam 21 closing the notch 201 on the second crossbeam 22. Then the subframe 2 as a whole is a closed annular frame, and the first crossbeam 21 and the second crossbeam 22 as a whole form the front crossbeam of the annular frame. In some other embodiments, the first crossbeam 21 is connected to the second crossbeam 22 via a connecting beam (as shown in Figure 2, connecting beam segment 212). Alternatively, in some other embodiments, the two ends of the first crossbeam 21 are respectively connected to a pair of first longitudinal beams 24 spaced apart in the second direction, and the first crossbeam 21 and the second crossbeam 22 have a gap. In this way, the first crossbeam 21, the pair of first longitudinal beams 24 and the third crossbeam 23 form a closed annular outer frame, while the second crossbeam 22, the pair of first longitudinal beams 24 and the third crossbeam 23 form an annular inner frame with a notch 201. Thus, not only does the subframe as a whole form a closed frame structure, but it is also equivalent to enclosing the second crossbeam 22 within the outer frame.

[0036] As can be seen, the subframe 2 is configured in this way, with a closed ring frame structure, which is stable in the whole. It also has three crossbeams in the first direction, which enhances the overall strength and torsional resistance of the subframe 2. Compared with the ordinary U-shaped subframe in the prior art, it has greater strength and torsional resistance. When it is necessary to install a drive motor, such as a dual-motor assembly (an integration of two drive motors and a transmission), it can install a dual-motor assembly with a larger power specification to meet the greater power requirements of the vehicle.

[0037] Meanwhile, since the second crossbeam 22 has a notch 201, the components mounted on the subframe 2 can partially extend into the notch 201 and intersect with the second crossbeam 22. For example, when mounting the dual-motor assembly 1, as shown in Figure 4, the main body of the dual-motor assembly 1 can be located in the annular inner frame, and its front end can extend into the notch 201. Thus, the subframe with the notch 201 provided in this application, compared with the frame structure of three full crossbeams, can shorten the length of the subframe 2 in the first direction, so that the high-strength subframe with three crossbeams and an overall frame structure can minimize its overall length in the first direction, making its overall length basically consistent with the length of the U-shaped subframe in the prior art. When this subframe is applied to the vehicle body, it will not increase the space occupied in the length of the vehicle body (the first direction is the length direction of the vehicle body), which is conducive to arranging large-volume and high-capacity batteries on the vehicle body.

[0038] The subframe 2 can accommodate a high-output dual-motor assembly 1, which can stably output sufficient power in actual vehicle conditions. The subframe 2 can be installed on vehicles that require high drive capacity, such as electric off-road vehicles and jeeps, and can adapt to poor road conditions, improving the strength, stability, comfort and durability of the vehicle body.

[0039] As can be seen, the subframe provided in this application has three crossbeams and is a closed frame structure with high overall strength. By setting the notch, it can meet the requirements of increasing the specifications of mounted components such as dual motor assemblies, while minimizing the size in the first direction, i.e. the length of the vehicle body, reducing the space occupied in the length of the vehicle body, which is conducive to arranging large-volume and high-capacity batteries on the vehicle body.

[0040] As shown in Figures 1 and 2, in a specific embodiment provided by this application, the first crossbeam 21 includes a main beam body 211 and a connecting beam segment 212 protruding from one side of the main beam body 211. The main beam body 211 is connected to the second crossbeam 22 through the connecting beam segment 212. Thus, the main beam body 211 and the connecting beam segment 212 can be an integral structure, while the connecting beam segment 212 can be offset from the first longitudinal beam 24 in the second direction, which also facilitates increasing the size of the connecting beam segment 212 in the second direction and increasing the structural strength.

[0041] In some embodiments, the top surface of the connecting beam segment 212 may be lower than the top surface of the main beam 211 and the top surface of the second crossbeam 22 (this does not mean that the bottom surface of the connecting beam segment 212 is lower than the bottom surface of the main beam 211 and the bottom surface of the second crossbeam 22). This creates a recess, as shown in Figure 1, which facilitates the fixing and arrangement of components such as the steering gear 3.

[0042] In a further embodiment, the subframe 2 also includes a connecting crossbeam 25. The second crossbeam 22 includes two crossbeam segments 221 spaced apart in the second direction, as shown in Figures 1, 3, and 5. The two crossbeam segments 221 are respectively connected to the two first longitudinal beams 24, and the space between the two crossbeam segments 221 in the second direction forms the aforementioned gap 201. The two ends of the connecting crossbeam 25 are respectively connected to the two crossbeam segments 221. Thus, when the dual-motor assembly 1 is connected to the subframe 2, the two crossbeam segments 221 on both sides of the gap 201 are connected by the connecting crossbeam 25, and the second crossbeam 22 also forms an integral crossbeam. The subframe 2 forms a double-frame structure with a closed annular outer frame and a closed annular inner frame. The overall structure is more stable and stronger, further improving the overall strength and torque resistance of the subframe 2. It can accommodate drive motors with higher power specifications, such as the dual-motor assembly, and can better adapt to the high output power of the drive motor and harsh road conditions, improving the vehicle's NVH performance, robustness, durability, and stability and driving comfort under harsh conditions.

[0043] In some embodiments, the connecting beam 25 is located above the second beam 22 and is detachably connected to the two beam segments 221 of the second beam 22, such as by bolts. This not only avoids occupying space in the first direction (the length direction of the vehicle body) but also facilitates disassembly, making it convenient for the disassembly, assembly, and maintenance of the dual-motor assembly 1. Alternatively, in other embodiments, the connecting beam 25 may also be located below the dual-motor assembly 1.

[0044] Of course, in some other embodiments, the notch 201 can be in the shape of a groove. In this case, the second crossbeam 22 is not completely broken and the second crossbeam 22 is in a U-shaped form. In such embodiments, a connecting crossbeam 25 can also be further provided to enhance the overall strength of the second crossbeam 22.

[0045] In some embodiments, the subframe 2 also includes a support beam located at the lower part of the annular inner frame (the lower part refers to the portion of the annular inner frame located below the central region in the height direction, or the bottom end of the annular inner frame). The support beam not only enhances the support and fixation of components mounted on the subframe 2, such as the high-power dual-motor assembly 1, but also enhances the overall strength of the subframe 2.

[0046] Specifically, in some specific embodiments, as shown in Figure 2, the support beam includes a second longitudinal beam 26 extending along a first direction, with both ends of the second longitudinal beam 26 connected to a second crossbeam 22 and a third crossbeam 23, respectively. The second longitudinal beam 26 has at least two sections, each located at one end of the annular inner frame in the second direction. When the dual-motor assembly 1 is mounted on the subframe 1, the main body of the dual-motor assembly 1 is located within the annular inner frame, and the second longitudinal beam 26 is located below the two side ends of the dual-motor assembly 1 along the second direction, supporting the dual-motor assembly 1. Thus, the first longitudinal beam 24, the second longitudinal beam 26, the second crossbeam 22, and the third crossbeam 23 form a box-type structure, which not only has high overall strength, enabling it to mount a large-volume, high-power dual-motor assembly 1, but also provides high stability, high handling stability, and high protection for the dual-motor assembly 1, allowing it to adapt to harsh road conditions.

[0047] The connecting beam segment 212 can be flush or substantially flush with the second longitudinal beam 26 in the vehicle body height direction. In the second direction, the connecting beam segment 212 can be opposite to the second longitudinal beam 26. Thus, the connecting beam segment 212, the part of the second crossbeam 22 located between the connecting beam segment 212 and the second longitudinal beam 26, and the second longitudinal beam 26 together form a long longitudinal beam, which can further enhance the overall strength of the subframe.

[0048] An embodiment of this application also provides an arrangement structure for a subframe and a dual-motor assembly, including a dual-motor assembly 1 and a subframe, wherein the subframe is the subframe 2 described in any of the above embodiments. This arrangement structure possesses the beneficial effects of the above embodiments, which will not be elaborated further here.

[0049] The dual-motor assembly 1 includes a motor controller 14 and a motor body. The motor body includes two drive motor bodies 15 and two transmissions 11. In this application, the arrangement of the dual-motor assembly 1 and the subframe 2 can be as shown in Figures 4 and 6, where the motor controller 14 is located above the motor body, and the motor body is located in the annular inner frame of the subframe 2. At the same time, the front end of the dual-motor assembly 1 (the front end refers to the end closer to the front of the vehicle in the length direction of the vehicle body when the component is on the vehicle body, the same below), specifically the front end of the transmission 11 (the rear end of the transmission 11 is connected to the drive motor body 15, and the front end protrudes from the drive motor body 15) extends into the notch 201 and is connected to the second crossbeam 22 through the front suspension 27. Thus, the second crossbeam 22 and the dual motor assembly 1 are partially intersected. Compared with the arrangement of the first crossbeam 21 and the second crossbeam 22 located entirely in front of the dual motor assembly 1, this reduces the space occupied in the length direction of the vehicle body. The length occupied by the U-shaped subframe and dual motor assembly in the prior art is basically the same, which is conducive to arranging large-volume and high-capacity batteries on the vehicle body.

[0050] As can be seen, the subframe and dual-motor assembly arrangement structure provided in this application has a stable overall structure and minimizes the size and space occupation of the subframe 2 in the length direction of the vehicle body. It can meet the requirements of the subframe 2 to carry the high-power dual-motor assembly 1 without squeezing or occupying the battery arrangement space as much as possible, and meet the requirements of new energy vehicles such as off-road vehicles for carrying large-capacity batteries, high-power drive motors and high-strength subframe 2.

[0051] In some embodiments, to further reduce the size of the subframe 2 in the first direction and reduce the space occupied in the length direction of the vehicle body, the structure and mounting of the dual motor assembly 1 can be configured as follows: the motor controller 14 is located above the motor body; the connection mounting between the dual motor assembly 1 and the subframe 2 does not include the mounting bracket, but rather, at least four connecting shafts are directly provided on the dual motor assembly 1. For example, the front connecting shaft 12 protrudes from both sides of the part of the transmission 11 located in the notch 201 along the second direction, and the rear connecting shaft 13 protrudes from the side of the motor body facing the third crossbeam 23 and extends along the first direction, as shown in Figure 6. The mounting (sleeve-shaped) for the connecting shafts to pass through is embedded in the subframe 2. The front mounting 27 connected to the front connecting shaft 12 is embedded in the crossbeam section 221 forming the notch 201, as shown in Figure 1, or it can be said to be set on the inner wall of the notch 201. That is, the front end of the dual-motor assembly 1 extends into the notch 201, and the front end of the dual-motor assembly 1 has front connecting shafts 12 protruding on both sides in the second direction. The front connecting shafts 12 are inserted into the front suspension 27 in the second crossbeam 22. The third crossbeam 23 is fitted with a rear suspension 28 connected to the rear connecting shaft 13, as shown in Figure 1. That is, the rear end of the dual-motor assembly 1 has a rear connecting shaft 13 protruding along the first direction, and the rear connecting shaft 13 is inserted into the rear suspension 28 in the third crossbeam 23, as shown in Figures 4 and 5.

[0052] With this configuration, the space of the inner ring is matched with the volume of the dual motor assembly 1. The dual motor assembly 1 is directly connected to the subframe 2, and no brackets are set at the four suspension points. This not only allows for a compact structure and layout, avoiding additional space occupation in the length of the vehicle body, but also makes the connection between the dual motor assembly 1 and the subframe 2 more stable and tighter, greatly improving the vehicle's handling stability and handling response speed.

[0053] The aforementioned arrangement of the subframe 2 and dual-motor assembly 1 is applicable to the rear axle of a vehicle, and also to arrangements where dual drive motors are installed in the front compartment without an engine. This application further describes some arrangements of the subframe 2 and dual-motor assembly 1 when they are located at the rear axle of a vehicle.

[0054] The steering gear 3 is also fixed to the subframe 2, and is located on the side of the dual-motor assembly 1 closer to the first crossbeam 21 in the first direction, that is, in front of the dual-motor assembly 1 in the length direction of the vehicle body (the front to rear direction is the fore-aft direction, which is also the first direction mentioned above; closer to the front is the front, and closer to the rear is the rear), such as in front of the second crossbeam 22. With this arrangement, the steering gear 3 is located close to the transmission 11 and the drive shaft 5, which makes the structure compact and easy to connect.

[0055] As shown in Figure 4, in the embodiment of this application, the steering gear 3 is fixed above the front end of the subframe 2 and supported by the front end of the subframe 2. In this way, compared with fixing the steering gear 3 to the front of the subframe 2, the overall layout can be further compacted, saving space occupied in the first direction, and also enhancing the support stability and connection stability of the steering gear 3; it also facilitates the fixing of the steering gear 3, which can be fixed and installed from above the subframe 2.

[0056] Specifically, the first crossbeam 21 includes a main beam body 211 and a connecting beam segment 212 protruding from one side of the main beam body 211. The main beam body 211 is connected to the second crossbeam 22 through the connecting beam segment 212. The top surface of the connecting beam segment 212 is lower than the top surface of the main beam body 211 and the top surface of the second crossbeam 22, forming a recess. The steering gear 3 is positioned above the connecting beam segment 212 and located within the recess. In other words, it is equivalent to having a recessed section on the subframe 2, forming a groove structure that accommodates the steering gear 3, improving the positioning of the steering gear 3, facilitating quick positioning and installation of the steering gear 3, and enhancing the stability of the steering gear 3.

[0057] In some embodiments, two connecting beam segments 212 are spaced apart along the width direction of the vehicle body, i.e., the second direction. The space between the two connecting beam segments 212 is opposite to and connected to the notch 201. The area of ​​the main beam 211 opposite to the space is concave, that is, the side of the main beam 211 facing the third crossbeam 23 is concave away from the third crossbeam 23 to expand the space, as shown in Figures 2 and 4. The power component of the steering gear 3 is located in the space. In this way, the steering gear 3 is securely fixed, and the weight of the subframe 2 is reduced, which is beneficial to controlling the overall weight of the vehicle.

[0058] As shown in Figure 4, the subframe 2 can be adapted to the multi-link suspension 4. The subframe 2 can be connected to the multi-link suspension 4 on both sides in the second direction. The two lower control arms of the multi-link suspension 4 are respectively hinged to the second crossbeam 22 and the third crossbeam 23. One of the two upper control arms is hinged to the first longitudinal beam 24, and the other is hinged to the steering gear 3.

[0059] This application also provides a vehicle with a subframe and dual-motor assembly arrangement as described in any of the preceding embodiments. This vehicle possesses the beneficial effects described in the above embodiments, which will not be repeated here. Specifically, this vehicle can be a dual rear-wheel-drive new energy vehicle or a four-wheel-drive new energy vehicle.

[0060] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0061] The components and devices described in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the accompanying drawings. As those skilled in the art will recognize, these components and devices can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the words “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0062] It should also be noted that in the apparatus and equipment of this application, the components can be disassembled and / or reassembled. These disassemblies and / or reassemblies should be considered as equivalent solutions of this application.

[0063] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0064] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

[0065] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A subframe, wherein, It includes at least two first longitudinal beams extending along a first direction, and a first crossbeam, a second crossbeam, and a third crossbeam that both extend along a second direction and are arranged sequentially along the first direction. The second crossbeam and the third crossbeam are both located between the two first longitudinal beams, and the second crossbeam, the third crossbeam, and the two first longitudinal beams form an annular inner frame. The second crossbeam has a notch; the first crossbeam is located on the side of the second crossbeam away from the third crossbeam, and the first crossbeam is connected to the second crossbeam or the first longitudinal beam, and the extension of the first crossbeam in the second direction covers the notch.

2. The subframe as described in claim 1, wherein, The second crossbeam includes two crossbeam segments that are respectively connected to the two first longitudinal beams and have a distance between them, with the gap formed between the two crossbeam segments; The subframe also includes a connecting crossbeam that connects the two crossbeam segments.

3. The subframe as described in claim 2, wherein, The connecting beam is located above the second beam and is detachably connected to the beam segment.

4. The subframe as described in any one of claims 1-3, wherein, The first crossbeam includes a main beam body and a connecting beam segment protruding from the main beam body. The main beam body is connected to the second crossbeam through the connecting beam segment. The top surface of the connecting beam segment is lower than the top surface of the main beam body and the top surface of the second crossbeam.

5. The subframe as described in any one of claims 1-4, further comprising a support beam located at the lower part of the annular inner frame for supporting components located within the annular inner frame.

6. The subframe as described in claim 5, wherein, The support beam is a second longitudinal beam extending along the first direction. The second longitudinal beam has at least two members arranged along the second direction and located at both ends of the annular inner frame in the second direction.

7. An arrangement structure for a subframe and a dual-motor assembly, wherein, It includes a dual-motor assembly and a subframe as described in any one of claims 1-6, wherein the dual-motor assembly is connected to the subframe.

8. The arrangement structure of the subframe and dual-motor assembly as described in claim 7, wherein, The dual-motor assembly includes a motor controller and a motor body. The motor body includes a motor and a gearbox. The motor body is located in the annular inner frame, and the gearbox extends at least partially into the notch and is connected to the second crossbeam.

9. The arrangement structure of the subframe and dual-motor assembly as described in claim 8, wherein, The motor controller is located above the motor body. The part of the transmission located in the notch has a front connecting shaft protruding on both sides in the second direction. The front connecting shaft passes through the front suspension embedded in the inner wall of the notch. And / or, the motor body has a protruding rear connecting shaft arranged along the first direction, and the third crossbeam is embedded with a rear suspension connected to the rear connecting shaft.

10. The arrangement of the subframe and dual-motor assembly as described in any one of claims 7-9, further comprising a steering unit located on the side of the dual-motor assembly close to the first crossbeam in a first direction, and the steering unit being located above the front end of the subframe and supported by the front end of the subframe.

11. The arrangement of the subframe and dual-motor assembly as described in claim 10, wherein, The first crossbeam includes a main beam body and a connecting beam segment protruding from the main beam body. The main beam body is connected to the second crossbeam through the connecting beam segment. The top surface of the connecting beam segment is lower than the top surface of the main beam body and the top surface of the second crossbeam, forming a recess. The steering gear is located in the recess and supported by the connecting beam segment. The connecting beam segment has two spaced-apart segments. The space between the two connecting beam segments is opposite to and connected to the notch. The area of ​​the main beam body opposite to the space is recessed to expand the space. The power component of the steering gear is located in the space.

12. A vehicle, wherein, The vehicle is provided with a subframe as described in any one of claims 1-6, or with an arrangement of a subframe and a dual-motor assembly as described in any one of claims 7-11.

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