Frame structure, chassis and vehicle

Abstract

The invention is suitable for the technical field of vehicles, and provides a frame structure, a chassis and a vehicle, the frame structure comprises a main frame, an auxiliary frame, a force transmission connecting piece and a cross beam, the main frame is provided with a main force transmission path, the auxiliary frame is connected with the main frame, the cross beam is integrated on the main frame, and the cross beam and the auxiliary frame are arranged in a spaced mode and connected through the force transmission connecting piece; and the auxiliary frame, the force transmission connecting piece and the cross beam form an auxiliary force transmission path. According to the vehicle frame structure, the chassis and the vehicle, the number of force transmission paths of the vehicle frame structure is increased, the force transmission efficiency of the vehicle frame structure can be improved to a certain degree, and the impact resistance of the whole vehicle frame structure and the chassis is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of vehicles, and in particular relates to a frame structure, a chassis and a vehicle. Background Art

[0002] Due to their environmentally friendly and energy-saving features, electric vehicles are increasingly being used in our daily lives. However, vehicles may collide while driving. However, the existing electric vehicle frame structure suffers from a single force transmission path, which prevents the impact force from being quickly dissipated after a collision, easily causing damage to the vehicle and even injury to the driver. Summary of the Invention

[0003] In view of the above problems, the present application provides a frame structure, a chassis and a vehicle, aiming to solve the technical problem of a single force transmission path existing in electric vehicles in the prior art.

[0004] In a first aspect, an embodiment of the present application provides a frame structure, comprising a main frame, a sub-frame and a crossbeam, wherein the main frame has a main force transmission path, the sub-frame is connected to the main frame, and the crossbeam is integrated on the main frame. The frame structure also includes a force transmission connector, the crossbeam is spaced apart from the sub-frame and connected through the force transmission connector, and the sub-frame, the force transmission connector and the crossbeam form a secondary force transmission path.

[0005] In the technical solution of the embodiment of the present application, a force transmission connector is added between the subframe and the crossbeam, so that the subframe, the force transmission connector, and the crossbeam form a secondary force transmission path. In this way, the impact force received by the front end of the frame structure can be transmitted to the rear end of the frame structure not only through the main force transmission path on the main frame, but also through the secondary force transmission path formed by the subframe, the force transmission connector, and the crossbeam. This can improve the force transmission efficiency of the frame structure to a certain extent, and can also disperse the impact force, improve the impact resistance of the entire frame structure and chassis, reduce the risk of deformation of the frame structure due to impact, increase the structural stability of the frame structure, and reduce the risk of failure of the main force transmission path to a certain extent, thereby reducing the risk of deformation of the battery compartment and damage to the battery due to failure of the main force transmission path, thereby improving the safety of the vehicle to a certain extent.

[0006] In some embodiments, the force transmission connector has multiple connections, and the multiple connections are respectively connected to different positions of the crossbeam to divide the impact force transmitted by the subframe into multiple force components and transmit them to different positions of the crossbeam. The force transmission connector is provided with multiple connections, and when the force transmission connector is connected to the crossbeam, it can be connected to different positions of the crossbeam through the multiple connections. When the force transmission connector transmits the impact force, the impact force transmitted by the subframe can be divided into multiple force components and transmitted to different positions of the crossbeam through the multiple connections, and the impact force can be dispersed and transmitted to avoid the impact force on the crossbeam being dispersed in multiple parts, thereby reducing the deformation of the crossbeam at the connection with the force transmission connector to a certain extent, and also improving the impact resistance of the entire frame structure.

[0007] In some embodiments, the force transmission connector includes multiple first force transmission arms, each of which has two ends connected to the subframe and the crossbeam, respectively. Different first force transmission arms are connected to different positions on the crossbeam. The multiple first force transmission arms are used to divide the impact force transmitted from the subframe into multiple force components and transmit them to different positions on the crossbeam. The impact force transmitted from the subframe to the force transmission connector is dispersed and transmitted to different parts of the crossbeam via multiple force transmission paths. This can reduce the risk of the impact force on the crossbeam being concentrated in a single position, thereby reducing the deformation of the crossbeam on the frame structure at the connection with the force transmission connector, and improving the impact resistance of the entire frame structure.

[0008] In some embodiments, the force transmission connector further includes a main connecting portion, located on a side of the first force transmission arm proximate to the subframe, through which the plurality of first force transmission arms are connected to the subframe. The provision of the main connecting portion ensures sufficient contact area between the force transmission connector and the subframe during connection, facilitating connection between the force transmission connector and the subframe. Furthermore, the plurality of first force transmission arms can be connected into a single integral structure, thereby enhancing the strength of the entire force transmission connector.

[0009] In some embodiments, the force transmission connector further includes a first connection reinforcement portion, and two adjacent first force transmission arms are connected by the first connection reinforcement portion. The first connection reinforcement portion is provided between two adjacent first force transmission arms, and the two first force transmission arms are connected by the first connection reinforcement portion. When the force transmission connector is subjected to force, the first connection reinforcement portion can reduce the risk of relative movement between the two adjacent first force transmission arms to a certain extent, thereby enhancing the overall strength of the force transmission connector.

[0010] In some embodiments, the first force transmission arm, the main connection portion, and the first connection reinforcement portion form at least one closed structure. By adopting the solution provided by this embodiment, the first force transmission arm, the main connection portion, and the first connection reinforcement portion form a closed structure, so that the first force transmission arm, the main connection portion, and the first connection reinforcement portion are connected as a whole, thereby enhancing the overall strength of the force transmission connector to a certain extent and facilitating the handling and assembly of the force transmission connector.

[0011] In some embodiments, the force-transmitting connector further includes a second connection reinforcement portion, located within the closed structure, connecting the first connection reinforcement portion and a first component, wherein the first component is the main connection portion and / or the first force-transmitting arm. The provision of the second connection reinforcement portion further enhances the strength of the closed structure, thereby reducing, to a certain extent, the risk of deformation of the closed structure when subjected to force, thereby enhancing the overall strength of the force-transmitting connector.

[0012] In some embodiments, the second connection reinforcement portion, the first force transmission arm, and the first connection reinforcement portion enclose a triangular cavity. By enclosing the second connection reinforcement portion, the first connection reinforcement, and the first force transmission arm to form at least one triangular cavity, the overall strength of the entire force transmission connection member can be improved.

[0013] In some embodiments, the first end of the first force transmission arm is connected to the main connecting portion, the second end of the first force transmission arm is connected to the crossbeam, and the distance between the first ends of at least two of the first force transmission arms is smaller than the distance between the second ends of the two first force transmission arms. By making the distance between the first ends of at least two first force transmission arms smaller than the distance between the second ends of two first force transmission arms, the two first force transmission arms form a shape similar to an "eight" or "person", so that the two first force transmission arms can form a mutually supporting effect. After the force transmission connector is respectively connected to the two positions of the subframe and the battery housing, a triangular or nearly triangular structure is formed, making the overall connection and installation of the force transmission connector to the crossbeam more stable, thereby improving the stability of the frame structure.

[0014] In some embodiments, the force transmission connector also includes a second force transmission arm, and the second force transmission arm is located between two adjacent first force transmission arms, and the second force transmission arm connects the first component and the crossbeam, and the first component is the main connection part and / or the first force transmission arm. By arranging the second force transmission arm between two adjacent first force transmission arms, more connection points are added on the basis of the connection between the first force transmission arm and the crossbeam. After the force transmission connector is subjected to an impact force, the impact force can be transmitted along the second force transmission arm and the first force transmission arm to multiple positions on the crossbeam, further dispersing the impact force, so as to reduce the risk of deformation caused by excessive concentration of impact force on a local area of ​​the crossbeam, thereby improving the impact resistance of the crossbeam on the entire chassis, and thus improving the safety of the battery.

[0015] In some embodiments, the first end of the second force transmission arm is connected to the main connecting portion, the second end of the second force transmission arm is connected to the crossbeam, and the distance between the first end of the second force transmission arm and the first end of the first force transmission arm is smaller than the distance between the second end of the second force transmission arm and the second end of the first force transmission arm. This solution allows the entire force transmission connector to form a "claw"-shaped structure, allowing the two first force transmission arms to support each other. After the force transmission connector is connected to the subframe and the battery housing at two locations, a triangular structure or a nearly triangular structure is formed. Furthermore, by providing the second force transmission arm, a supporting component can be added to the interior of the triangular structure, further enhancing the stability of the connection between the force transmission connector and the crossbeam.

[0016] In some embodiments, the force transmission connector further includes a third connection reinforcement portion, the third connection reinforcement portion connecting the first force transmission arm and the second force transmission arm. By providing the third connection reinforcement portion between the first force transmission arm and the second force transmission arm, and connecting the first force transmission arm and the second force transmission arm via the third connection reinforcement portion, the first connection reinforcement prevents relative movement between the first force transmission arm and the second force transmission arm, thereby enhancing the overall strength of the force transmission connector.

[0017] In some embodiments, the third connection reinforcement portion, the first force transmission arm, and the second force transmission arm form a triangular cavity. By adopting the solution provided by this embodiment, the overall strength of the entire force transmission connection member can be improved.

[0018] In some embodiments, the force-transmitting connector is provided with a reinforcement structure that protrudes from the surface of the force-transmitting connector and is used to enhance the mechanical strength of the force-transmitting connector. Providing the reinforcement structure protruding from the surface of the force-transmitting connector increases the local thickness of the force-transmitting connector at the location of the reinforcement structure, thereby increasing the mechanical strength of the force-transmitting connector, enabling the force-transmitting connector to withstand greater impact forces and improving the safety of the vehicle frame structure.

[0019] In some embodiments, the reinforcement structure includes a first protrusion disposed around at least a portion of the edge of the first force transmission arm and / or the second force transmission arm. The reinforcement structure, in the form of the first protrusion, disposed around at least a portion of the edge of the first force transmission arm and / or the second force transmission arm, can reinforce the primary force-bearing portion (the first force transmission arm and / or the second force transmission arm) when subjected to an impact force, thereby ensuring the overall strength of the force transmission connector.

[0020] In some embodiments, the reinforcement structure further includes a second protrusion disposed around at least a portion of the edge of the first, second, and / or third connection reinforcement portions. The provision of the second protrusion can reinforce at least a portion of the first, second, and / or third connection reinforcement portions, thereby further improving the overall strength of the force-transmitting connector.

[0021] In some embodiments, there are two first force transmission arms, and the two first force transmission arms extend at an angle. By arranging the two first force transmission arms at an angle, the two first force transmission arms can form a shape similar to an "eight" or "person," allowing the two first force transmission arms to support each other. When the force transmission connector is connected to the subframe and two locations of the battery housing, a triangular or nearly triangular structure is formed, making the overall connection and installation of the force transmission connector to the crossbeam more stable, thereby improving the stability of the frame structure.

[0022] In some embodiments, the force transmission connector is an integrally formed structure, which can improve the overall strength of the force transmission connector, simplify the production steps of the force transmission connector, and improve production efficiency.

[0023] In some embodiments, the force-transmitting connector is detachably connected to the subframe and / or the crossbeam. By detachably connecting the force-transmitting connector to the subframe and the battery housing, the entire CTC platform can be relied upon, thereby increasing the degree of CTC platform integration. Depending on the vehicle model, the installation of the force-transmitting connector can be determined based on actual needs.

[0024] In some embodiments, the force-transmitting connector is connected to the subframe and / or the crossbeam via fasteners. Using fasteners to connect the force-transmitting connector to the subframe and crossbeam can make the connection more convenient and secure, improve assembly efficiency, and also reduce chassis production costs.

[0025] In some embodiments, the force-transmitting connector is further provided with a plurality of mounting holes for passing the fasteners. Providing the mounting holes on the force-transmitting connector facilitates the passage of fasteners through the force-transmitting connector when the force-transmitting connector is connected to the subframe or battery housing, thereby making installation of the force-transmitting connector more convenient.

[0026] In some embodiments, the mounting hole is provided with a reinforcement boss, which protrudes from the surface of the force-transmitting connector. Providing reinforcement bosses around the mounting hole, which protrude from the surface of the force-transmitting connector, increases the thickness of the force-transmitting connector at the mounting hole, thereby improving the strength of the force-transmitting connector at the mounting hole and making the connection between the force-transmitting connector and the subframe or battery housing more secure and stable.

[0027] In some embodiments, the force transmission connector is provided with a weight-reducing structure for reducing the weight of the force transmission connector. Providing the weight-reducing structure on the force transmission connector can reduce the weight of the force transmission connector without affecting its own strength, making the entire force transmission connector lighter.

[0028] In some embodiments, the weight-reducing structure includes a weight-reducing hole provided on the force-transmitting connector, wherein the weight-reducing hole is provided through the force-transmitting connector. The weight-reducing structure using the weight-reducing hole can also facilitate cutting of the force-transmitting connector, thereby reducing the manufacturing cost of the force-transmitting connector.

[0029] In some embodiments, there are multiple force-transmitting connectors, each spaced apart from the other. Providing multiple force-transmitting connectors increases the number of connection points on the crossbeam, distributing the impact force on the crossbeam at multiple locations, rather than concentrating the impact force on the crossbeam at a single location. This reduces deformation of the crossbeam during an impact, making the entire frame structure more impact-resistant and protecting the battery.

[0030] In some embodiments, the subframe has two connecting portions, and the force-transmitting connectors are two in number, with the two force-transmitting connectors being connected to the two connecting portions, respectively. Providing two force-transmitting connectors can ensure the connection strength between the subframe and the crossbeam while also reducing the manufacturing cost of the entire frame structure.

[0031] In some embodiments, the two force-transmitting connectors are arranged in mirror-symmetrical fashion. This arrangement allows the weight of the frame structure to be more evenly distributed across the width of the vehicle, while also ensuring that forces on both sides of the crossbeam are evenly distributed across the width of the vehicle after a front end collision.

[0032] Secondly, embodiments of the present application provide a chassis comprising any of the aforementioned frame structures. The chassis provided by this embodiment, including the frame structure provided by any of the aforementioned solutions, can, on the one hand, improve the force transmission efficiency of the frame structure to a certain extent, and, on the other hand, disperse impact forces, thereby improving the impact resistance of the entire frame structure and chassis and reducing the risk of deformation of the frame structure caused by impact.

[0033] Thirdly, embodiments of the present application provide a vehicle comprising the aforementioned chassis. The vehicle provided by embodiments of the present application, including the chassis provided by any of the above solutions, can, on the one hand, improve the force transmission efficiency of the frame structure to a certain extent, and, on the other hand, disperse impact forces, thereby improving the impact resistance of the entire frame structure and chassis and reducing the risk of deformation of the frame structure caused by impact.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0036] Figure 1 A schematic structural diagram of a vehicle according to some embodiments of the present application;

[0037] Figure 2 A schematic diagram of a partial structure of a chassis according to some embodiments of the present application;

[0038] Figure 3 A schematic diagram of a partial structure of a vehicle frame structure according to some embodiments of the present application;

[0039] Figure 4 This is a schematic structural diagram of a force transmission connector in a vehicle frame structure according to some embodiments of the present application;

[0040] Figure 5This is a schematic diagram of the main structure of a force transmission connection member in a vehicle frame structure in some embodiments of the present application;

[0041] Figure 6 for Figure 5 Schematic diagram of the side structure of the central force transmission connector along direction A;

[0042] Figure 7 Schematic diagram of the structure of the force transmission connection member in the frame structure of other embodiments of the present application;

[0043] Figure 8 Schematic diagram of the main structure of the force transmission connection member in the frame structure of other embodiments of the present application;

[0044] Figure 9 for Figure 8 Schematic diagram of the side structure of the central force transmission connector along direction B;

[0045] Figure 10 Schematic diagram of the structure of the force transmission connection member in the frame structure of other embodiments of the present application;

[0046] Figure 11 Schematic diagram of the main structure of the force transmission connection member in the frame structure of other embodiments of the present application;

[0047] Figure 12 for Figure 11 Schematic diagram of the side structure of the central force transmission connector along the C direction.

[0048] The accompanying drawings in the specific implementation manner are as follows:

[0049] 1000. Vehicle;

[0050] 100, chassis, 200, body;

[0051] 10. Main frame, 20. Force transmission connector, 30. Sub-frame, 40. Crossbeam;

[0052] 201. Main connecting part, 202. First force transmission arm, 203. Second force transmission arm, 204. First connection reinforcement part, 205. Second connection reinforcement part, 206. Third connection reinforcement part, 207. Weight reduction hole, 208. Mounting hole, 209. Reinforcement structure, 219. First protrusion, 229. Second protrusion. DETAILED DESCRIPTION

[0053] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0055] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0056] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0058] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0059] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0060] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0061] Because electric vehicles are environmentally friendly and energy-efficient, they are increasingly being used in people's daily lives. While vehicles may collide while driving, the force transmission path design of the existing electric vehicle frame structure is irrational. In particular, when the front end of the vehicle is hit, the impact force is transferred only through the front longitudinal beam in the frame to the energy absorption box structure, which then absorbs the energy and transmits it to the door sill beam. Without other paths on the frame to transmit the impact force, the impact force on the vehicle cannot be effectively and quickly dispersed, resulting in a concentrated load on the frame, which in turn makes the vehicle's frame structure susceptible to damage.

[0062] In order to improve the above-mentioned problems, an embodiment of the present application provides a vehicle frame structure in which a force transmission connector is added between the subframe and the crossbeam, so that the subframe, the force transmission connector and the crossbeam are combined to form a force transmission path (i.e., a secondary force transmission path). In this way, the impact force received by the front end of the vehicle frame structure can be transmitted to the rear end of the vehicle frame structure not only through the main force transmission path on the main frame, but also through the secondary force transmission path formed by the subframe, the force transmission connector and the crossbeam. This can, on the one hand, improve the force transmission efficiency of the vehicle frame structure to a certain extent, and on the other hand, disperse the impact force, improve the impact resistance of the entire vehicle frame structure and chassis, reduce the risk of deformation of the vehicle frame structure caused by impact, increase the structural stability of the vehicle frame structure, and, on the other hand, reduce the risk of failure of the main force transmission path to a certain extent, thereby reducing the risk of deformation of the battery compartment and damage to the battery caused by failure of the main force transmission path, thereby improving the safety of the vehicle to a certain extent.

[0063] The frame structure disclosed in the embodiments of the present application can be applied to a chassis and a vehicle. The vehicle can be a pure electric vehicle, an electric fuel hybrid vehicle, an electric gas hybrid vehicle, an extended-range vehicle, or other vehicles with a battery compartment integrated into the chassis.

[0064] Please refer to Figure 1In some embodiments of the present application, vehicle 1000 includes a chassis 100 and a body 200, with body 200 mounted on chassis 100. Chassis 100 refers to the component assembly that provides support for the entire vehicle 1000. Body 200 refers to the portion mounted on chassis 100 that provides a driving space and passenger space, and protects power components, electrical components, and the like on chassis 100.

[0065] like Figure 1 and Figure 2 As shown, the vehicle 1000 has a height direction Z, a length direction X, and a width direction Y. The height direction of the chassis 100 is consistent with the height direction of the vehicle 1000. Figure 1 The length direction of the chassis 100 is consistent with the length direction of the vehicle 1000. Figure 1 and Figure 2 The width direction of the chassis 100 is consistent with the width direction of the vehicle 1000. Figure 2 in the Y direction.

[0066] Please refer to Figure 2 The chassis 100 includes a vehicle frame structure. The chassis 100 also includes supporting systems such as a power system, a driving system, a steering system, and a braking system. These supporting systems are generally installed on the vehicle frame structure.

[0067] The frame structure generally includes a main frame 10, a front sub-frame, a rear sub-frame, a battery compartment, etc. The battery compartment can also be arranged or integrated on the frame structure.

[0068] Among them, the main frame 10 refers to the main part of the entire frame structure, and is a component that plays a major supporting role. The main frame 10 includes a crossbeam structure, two longitudinal beam structures arranged at intervals, and multiple energy absorption box structures. Among them, the longitudinal beam structure is arranged along the length direction of the vehicle body 200. It can be an integrated structure, or it can be composed of multiple parts such as a front longitudinal beam and a door sill beam, and the two longitudinal beam structures are connected by a crossbeam structure. The energy absorption box structure can absorb the impact force received by its own deformation. The energy absorption box structure can be distributed at the connection of the components according to the design requirements of the vehicle 1000. As mentioned above, an energy absorption box structure can be set between the front longitudinal beam and the door sill beam, and the impact force transmitted from the front longitudinal beam to the door sill beam is absorbed by the energy absorption box structure.

[0069] The front subframe and the rear subframe are generally mounted at the bottom of the main frame 10, with the front subframe located at the front end of the entire main frame 10 and the rear subframe located at the rear end of the entire main frame 10. The driving system of the chassis 100 generally includes parts such as axles and suspensions. Among them, the axles are divided into front axles and rear axles, and the suspensions are divided into front suspensions and rear suspensions. Wheels are mounted on the output ends of the front axles and rear axles. The front axle and the front suspension are generally mounted on the front subframe, and then mounted on the main frame 10 through the front subframe, thereby realizing the connection between the front axle and the front suspension and the main frame 10; the rear axle and the rear suspension are generally mounted on the rear subframe, and then mounted on the main frame 10 through the rear subframe, thereby realizing the connection between the rear axle and the rear suspension and the main frame 10. The front subframe and the rear subframe are generally stamped from metal sheets. In order to ensure a secure installation, both the front sub-frame and the rear sub-frame can be connected to the main frame 10 by means of fasteners, welding or clamping.

[0070] The battery compartment refers to a structure on the chassis 100 that houses and accommodates batteries. To save space, the battery compartment can be integrated with the main frame 10, forming a single, integral structure. The battery compartment typically possesses a certain degree of rigidity, absorbing or offsetting some impact forces, thus also protecting the batteries. The battery is the component that provides electrical energy to the vehicle 1000. The battery can provide power for the vehicle 1000's operation and other electrical components.

[0071] In some embodiments of the present application, in order to ensure the driving stability of the vehicle 1000, the battery compartment is usually located between the rocker beams on the two longitudinal beam structures, which can reduce the risk of the center of gravity of the vehicle 1000 shifting.

[0072] According to some embodiments of the present application, referring to Figure 2 and Figure 3 , and further reference Figures 4 to 12 An embodiment of the present application provides a vehicle frame structure. The frame structure includes a main frame 10, a subframe 30, a force transmission connector 20, and a crossbeam 40. The main frame 10 has a primary force transmission path. The subframe 30 is connected to the main frame 10. The crossbeam 40 is integrated into the main frame 10. The crossbeam 40 is spaced apart from the subframe 30 and connected via the force transmission connector 20. The subframe 30, the force transmission connector 20, and the crossbeam 40 form a secondary force transmission path.

[0073] The main force transmission path refers to the force transmission path composed of the above-mentioned front longitudinal beam, energy absorption box structure and door sill beam, which is also the only force transmission path of the frame structure in the relevant technology.

[0074] The sub-frame 30 can be a front sub-frame or a rear sub-frame. The sub-frame 30 is connected to the main frame 10 by bolts, welding, etc., as long as the force can be transmitted between the main frame 10 and the sub-frame 30.

[0075] The crossbeam 40 is a crossbeam on the battery compartment in the chassis. The crossbeam 40 being integrated into the main frame 10 means that the crossbeam 40 can be integrally formed with the main frame 10, or connected to or mounted on the main frame 10 by welding, bolting, or the like.

[0076] The force transmission connector 20 refers to a rigid component with a certain volume. The force transmission connector 20 is not easily deformed or only undergoes a small deformation after being subjected to an impact force. In order to ensure the strength of the force transmission connector 20 itself, the material of the force transmission connector 20 can be a metal material, such as iron, aluminum, alloy, etc., and processed and formed by casting, machining, 3D printing, die casting, etc.; the force transmission connector 20 can also be made of a polymer material and processed and formed by injection molding, 3D printing, etc., making the processing and manufacturing of the force transmission connector 20 more convenient. The force transmission connector 20 can be composed of one component or multiple components, and the specific method can be determined according to the needs of use.

[0077] The cross beam 40 and the sub-frame 30 are spaced apart, which means that there is a certain distance between them and they are not directly connected.

[0078] The cross beam 40 and the sub-frame 30 are connected via the force transmission connector 20 , which means that at least a portion of the force transmission connector 20 is located between the cross beam 40 and the sub-frame 30 and is connected to both the cross beam 40 and the sub-frame 30 .

[0079] Among them, the connection between the force transmission connector 20 and the subframe 30 is a rigid connection, and the positions of the force transmission connector 20 and the subframe 30 remain relatively fixed after the connection. For example, the connection between the force transmission connector 20 and the subframe 30 can be achieved by fastener connection, welding or threaded connection. The connection between the force transmission connector 20 and the crossbeam 40 is also a rigid connection, and the positions of the force transmission connector 20 and the crossbeam 40 remain relatively fixed after the connection. For example, the connection between the force transmission connector 20 and the crossbeam 40 can be achieved by fastener connection, welding or threaded connection.

[0080] The secondary force transmission path is formed by the subframe 30, the force transmission connector 20, and the crossbeam 40, and is connected to the primary force transmission path. A portion of the impact force applied to the primary force transmission path can be transferred to the secondary force transmission path through the connection between the main frame 10 and the subframe 30.

[0081] Reference Figure 3The subframe 30 is typically located below and near the front end of the main frame 10, and the force transmission connector 20 is connected between the subframe 30 and the crossbeam 40. The subframe 30, the force transmission connector 20, and the crossbeam 40 are arranged sequentially from front to back along the length of the chassis 100. When the front end of the vehicle 1000 is hit or collides, because the subframe 30 is located below and near the front end of the main frame 10 and is connected to the main frame 10, when the front end of the main frame 10 is impacted, part of the impact force can be transmitted to the subframe 30.

[0082] The force analysis of the frame structure provided by the embodiment of the present application is as follows:

[0083] When the front end of vehicle 1000 is hit, part of the impact force is transmitted along the primary force transmission path formed by the front longitudinal beam, crash box structure, and rocker beam on the main frame 10. Another part of the impact force is transmitted along the secondary force transmission path formed by the subframe 30, force transmission connector 20, and crossbeam 40, allowing part of the impact force to be transmitted to crossbeam 40. This allows the impact force to be transmitted through two different force transmission paths instead of a single one, thus dispersing the force transmission channels, improving force transmission efficiency to a certain extent, and increasing structural stability.

[0084] In addition, it should be noted that although the battery is installed in the battery compartment of the frame structure, the crossbeam 40 is part of the battery compartment, and part of the impact force will be transmitted to the battery compartment through the force transmission connector 20, but because the crossbeam 40 and the battery compartment usually have a certain rigidity themselves, they can absorb or offset part of the impact force. In this way, even if part of the impact force is transmitted to the battery compartment through the secondary force transmission path, as long as the magnitude of the impact force does not exceed the bearing capacity of the battery compartment, the battery compartment and the battery in the battery compartment will not be deformed or damaged.

[0085] With the frame structure provided in the embodiment of the present application, a force transmission connector 20 is added between the subframe 30 and the crossbeam 40, so that the subframe 30, the force transmission connector 20, and the crossbeam 40 are combined to form a force transmission path (i.e., a secondary force transmission path). In this way, the impact force received by the front end of the frame structure can be transmitted to the rear end of the frame structure not only through the main force transmission path on the main frame 10, but also through the secondary force transmission path formed by the subframe 30, the force transmission connector 20, and the crossbeam 40. This can, on the one hand, improve the force transmission efficiency of the frame structure to a certain extent, and on the other hand, disperse the impact force, improve the impact resistance of the entire frame structure and the chassis 100, reduce the risk of deformation of the frame structure caused by impact, increase the structural stability of the frame structure, and, on the other hand, reduce the risk of failure of the main force transmission path to a certain extent, thereby reducing the risk of deformation of the battery compartment and damage to the battery due to failure of the main force transmission path, thereby improving the safety of the vehicle 1000 to a certain extent.

[0086] In some embodiments, the force transmission connection member 20 is a casting made of aluminum, that is, the force transmission connection member 20 is made of aluminum and a casting process.

[0087] In some embodiments, please refer to Figures 4 to 6 The force transmission connector 20 has a plurality of connection points. The plurality of connection points are respectively connected to different positions of the cross beam 40 to divide the impact force transmitted by the subframe 30 into a plurality of component forces and transmit them to different positions of the cross beam 40.

[0088] The connection point refers to the connection portion on the force-transmitting connection member 20 .

[0089] Because the force-transmitting connector 20 can be configured in a variety of ways, the aforementioned connection can also be configured in a variety of ways. For example, the force-transmitting connector 20 can be a block, a portion of which can be stacked with the crossbeam 40, and the stacking area can be a long strip. Within the stacking area, the force-transmitting connector 20 can be connected to different locations of the crossbeam 40 via multiple welds, multiple bolts, or other connecting structures, and the force applied to the force-transmitting connector 20 can be transmitted to the crossbeam 40 via the aforementioned connecting structures. In this case, each location of the aforementioned connecting structures is considered a connection.

[0090] The force transmission connector 20 has multiple connections. When the force transmission connector 20 is connected to the cross beam 40, the multiple connections can be used to connect to different locations on the cross beam 40. When the force transmission connector 20 transmits an impact force, the multiple connections can be used to divide the impact force transmitted from the subframe 30 into multiple force components and transmit them to different locations on the cross beam 40. This can disperse the impact force and distribute the impact force on the cross beam 40 to multiple locations. This can reduce the deformation of the cross beam 40 at the connection with the force transmission connector 20 to a certain extent, and can also improve the impact resistance of the entire frame structure.

[0091] In some embodiments, see Figures 4 to 6 The force transmission connector 20 includes a plurality of first force transmission arms 202. Each first force transmission arm 202 is connected to the subframe 30 and the crossbeam 40 at both ends, and different first force transmission arms 202 are connected to different locations on the crossbeam 40. The plurality of first force transmission arms 202 are used to divide the impact force transmitted from the subframe 30 into multiple force components and transmit them to different locations on the crossbeam 40.

[0092] The first force transmission arm 202 is a component of a certain length and generally has a certain degree of rigidity. To ensure effective force transmission, both ends of the first force transmission arm 202 are rigidly connected to the subframe 30 and the crossbeam 40. The rigid connections can be made by fasteners, welding, clamping, plug-in connection, etc.

[0093] The multiple first force transmission arms 202 can be arranged at an angle or parallel to each other. When the multiple first force transmission arms 202 are arranged at an angle, the ends of two adjacent first force transmission arms 202 connected to the subframe 30 can be spaced apart or connected to each other. At the same time, the ends of the multiple first force transmission arms 202 connected to the crossbeam 40 are spaced apart from each other, so that the first force transmission arms 202 can be connected to different parts of the crossbeam 40. When the multiple first force transmission arms 202 are parallel to each other, the ends of the multiple first force transmission arms 202 connected to the subframe 30 are spaced apart from each other, and the ends of the multiple first force transmission arms 202 connected to the crossbeam 40 are spaced apart from each other, so that the multiple first force transmission arms 202 can be connected to different parts of the crossbeam 40.

[0094] In this embodiment, each first force transmission arm 202 can serve as a force transmission path. Since the force transmission connector 20 includes multiple first force transmission arms 202, and the multiple first force transmission arms 202 are respectively connected to different parts of the crossbeam 40, when the vehicle 1000 collides, the force transmission connector 20 can transmit the impact force transmitted from the subframe 30 to different parts of the crossbeam 40 through the multiple first force transmission arms 202, thereby dispersing the impact force and reducing the risk of the impact force on the crossbeam 40 being concentrated on one part. The deformation of the crossbeam 40 on the frame structure at the connection with the force transmission connector 20 can be reduced, thereby improving the impact resistance of the entire frame structure.

[0095] In some embodiments, see Figures 4 to 6 The force transmission connecting member 20 further includes a main connecting portion 201. The main connecting portion 201 is located on a side of the first force transmission arm 202 close to the auxiliary frame 30. The plurality of first force transmission arms 202 are all connected to the auxiliary frame 30 through the main connecting portion 201.

[0096] The main connecting part 201 refers to a component with a certain volume, which can be composed of one part or multiple parts. The main connecting part 201 can be in the shape of a block, a plate or a long strip, etc., and the main connecting part 201 can also be composed of components of various shapes. The main connecting part 201 and the first force transmission arm 202 are two different parts of the force transmission connector 20, and the main connecting part 201 generally also has a certain rigidity. In addition, the main connecting part 201 and the first force transmission arm 202 can be integrally formed, in which case the connection between the main connecting part 201 and the first force transmission arm 202 is an integral connection; the main connecting part 201 and the first force transmission arm 202 can also be a split structure, in which case the first force transmission arm 202 and the main connecting part 201 are rigidly connected, such as fastener connection, welding or clamping fixation.

[0097] By providing a main connecting portion 201 on the side of the first force transmission arm 202 near the subframe 30, multiple first force transmission arms 202 can be connected to the main connecting portion 201 and then connected to the subframe 30 through the main connecting portion 201. Since the main connecting portion 201 has a certain volume, the provision of the main connecting portion 201 can ensure sufficient contact area between the force transmission connector 20 and the subframe 30 during connection, making the connection between the force transmission connector 20 and the subframe 30 more convenient; multiple first force transmission arms 202 can also be connected into a single integral structure, which can improve the strength of the entire force transmission connector 20.

[0098] In some embodiments, see Figure 7 The force transmission connecting member 20 further includes a first connection reinforcement portion 204 , and two adjacent first force transmission arms 202 are connected via the first connection reinforcement portion 204 .

[0099] The first connection reinforcement part 204 refers to a supporting component with a certain rigidity, which can be composed of one part or multiple parts. The shape of the first connection reinforcement part 204 can be plate-shaped, strip-shaped, block-shaped, etc. The connection of two adjacent first force transmission arms 202 through the first connection reinforcement part 204 means that at least part of the first connection reinforcement part 204 is located between the two adjacent first force transmission arms 202 and is respectively connected to the two adjacent first force transmission arms 202. For example, one end of the first connection reinforcement part 204 can be connected to one first force transmission arm 202, and the other end of the first connection reinforcement part 204 is connected to the other first force transmission arm 202; or the middle part of the first connection reinforcement part 204 can be connected to one of the first force transmission arms 202, and one end of the first connection reinforcement part 204 is connected to the other first force transmission arm 202.

[0100] Because the multiple first force transmission arms 202 are respectively connected to different parts of the crossbeam 40, there is a certain gap area between two adjacent first force transmission arms 202. As a result, when the entire force transmission connector 20 is subjected to force, the two adjacent first force transmission arms 202 on the force transmission connector 20 may move relative to each other, causing the force transmission connector 20 to deform, thereby affecting the strength and force transmission effect of the entire force transmission connector 20. In this embodiment, a first connection reinforcement portion 204 is provided between two adjacent first force transmission arms 202, and the two first force transmission arms 202 are connected by the first connection reinforcement portion 204. When the force transmission connector 20 is subjected to force, the first connection reinforcement portion 204 can reduce the risk of relative movement between the two adjacent first force transmission arms 202 to a certain extent, thereby enhancing the overall strength of the force transmission connector 20.

[0101] In some embodiments, see Figure 5 The first force transmission arm 202, the main connecting portion 201 and the first connection reinforcement portion 204 form at least one closed structure.

[0102] The closed structure is a spatial structure formed by the side walls of the first force transmission arm 202, the side walls of the main connecting portion 201, and the side walls of the first connection reinforcement portion 204, and has an open area within the spatial structure. The outer contour of the cross section of the closed structure can be triangular, circular, square, etc.

[0103] Since there are multiple first force transmission arms 202, one or more first connection reinforcement parts 204 can be provided. The first force transmission arm 202, the main connection part 201 and the first connection reinforcement part 204 form at least one closed structure, which means that when there are two first force transmission arms 202, and one main connection part 201 and one first connection reinforcement part 204 respectively, the two first force transmission arms 202, the main connection part 201 and the first connection reinforcement part 204 form a closed structure; when there are more than three first force transmission arms 202 and more than two first connection reinforcement parts 204, the first force transmission arm 202, the main connection part 201 and the first connection reinforcement part 204 form multiple closed structures.

[0104] By adopting the solution provided in this embodiment, the first force transmission arm 202, the main connecting part 201 and the first connection reinforcement part 204 are used to form at least one closed structure, so that the first force transmission arm 202, the main connecting part 201 and the first connection reinforcement part 204 can be connected into a whole, thereby strengthening the overall strength of the force transmission connector 20 to a certain extent, and facilitating the transportation and assembly of the force transmission connector 20.

[0105] In some embodiments, see Figure 7 and Figure 8 The force transmission connector 20 further includes a second connection reinforcement portion 205. The second connection reinforcement portion 205 is located within the closed structure. The second connection reinforcement portion 205 connects the first connection reinforcement portion 204 and the first component. The first component is the main connection portion 201 and / or the first force transmission arm 202.

[0106] The second connection reinforcement part 205 refers to a supporting component with a certain rigidity. The shape of the second connection reinforcement part 205 can be plate-shaped, strip-shaped or block-shaped. The second connection reinforcement part 205 is located inside the closed structure as a whole. "The second connection reinforcement part 205 connects the first connection reinforcement part 204 and the first component, and the first component is the main connection part 201 and / or the first force transmission arm 202" includes at least the following situations: the first, the second connection reinforcement part 205 connects the first connection reinforcement part 204 and the main connection part 201; the second, the second connection reinforcement part 205 connects the first connection reinforcement part 204 and the first force transmission arm 202; the third, the second connection reinforcement part 205 connects the first connection reinforcement part 204, the first force transmission arm 202 and the main connection part 201.

[0107] The provision of the second connection reinforcement portion 205 can further improve the strength of the closed structure, reduce the risk of deformation of the closed structure when subjected to force to a certain extent, and thereby improve the overall strength of the force transmission connector 20.

[0108] In some embodiments, see Figure 8One end of the second connection reinforcement portion 205 away from the first connection reinforcement portion 204 is connected to both the main connection portion 201 and the first force transmission arm 202 .

[0109] By connecting the end of the second connection reinforcement portion 205 away from the first connection reinforcement portion 204 to both the main connection portion 201 and the first force transmission arm 202 , the connection between the two connection reinforcement portions in the closed structure can be made more stable.

[0110] In some embodiments, see Figure 8 The second connection reinforcement portion 205, the first force transmission arm 202 and the first connection reinforcement portion 204 form a triangular cavity.

[0111] A triangular cavity refers to a cavity structure whose outer contour of the cross section is a triangle or a type of triangle.

[0112] It is understood that the second connection reinforcement portion 205, the first force transmission arm 202, and the first connection reinforcement portion 204 enclosing a triangular cavity means that the second connection reinforcement portion 205, the first connection reinforcement, and at least one first force transmission arm 202 enclose a triangular cavity. When there are two first force transmission arms 202, one of the first force transmission arms 202, the second connection reinforcement portion 205, and the first connection reinforcement portion 204 can enclose a triangular cavity, and the other first force transmission arm 202, the second connection reinforcement portion 205, the first connection reinforcement portion 204, and the other adjacent first force transmission arm 202 can enclose a triangular cavity. Alternatively, they can enclose a cavity structure of other shapes, for example, the outer contour of the cross section of the cavity structure can be a quadrilateral, a circle, a trapezoid, etc.

[0113] By enclosing the second connection reinforcement portion 205 , the first connection reinforcement portion 204 and the first force transmission arm 202 into at least one triangular cavity, the overall strength of the entire force transmission connection member 20 can be improved.

[0114] In some embodiments, see Figure 5 、 Figure 9 or Figure 11 The first end of the first force transmission arm 202 is connected to the main connecting part 201, the second end of the first force transmission arm 202 is connected to the beam 40, and the distance between the first ends of at least two first force transmission arms 202 is smaller than the distance between the second ends thereof.

[0115] The distance between the first ends of the two first force transmission arms 202 refers to the length of a line extending between the spacing between the two opposing side walls of the first ends of the two first force transmission arms 202. The distance between the second ends of the two first force transmission arms 202 refers to the length of a line extending between the spacing between the two opposing side walls of the second ends of the two first force transmission arms 202. The minimum distance between the first ends of the two first force transmission arms 202 can be zero, meaning that the first ends of the two first force transmission arms 202 can be in contact with each other.

[0116] By making the distance between the first ends of at least two first force transmission arms 202 smaller than the distance between the second ends of the two first force transmission arms 202, the two first force transmission arms 202 form a shape similar to an "eight" or a "person", so that the two first force transmission arms 202 can support each other. After the force transmission connector 20 is respectively connected to the two positions of the subframe 30 and the battery housing, a triangular or nearly triangular structure is formed, making the connection and installation of the entire force transmission connector 20 to the crossbeam 40 more stable, thereby improving the stability of the frame structure.

[0117] In some embodiments, see Figure 10 , Figure 10 FIG2 is a schematic diagram of the structure of a force-transmitting connector 20 in a vehicle frame structure according to further embodiments of the present application. The force-transmitting connector 20 also includes a second force-transmitting arm 203, which is positioned between two adjacent first force-transmitting arms 202. The second force-transmitting arm 203 connects the first component to the crossbeam 40. The first component is the main connecting portion 201 and / or the first force-transmitting arm 202.

[0118] The second force transmission arm 203 also refers to a rigid component of a certain length. As part of the force transmission connector 20, the second force transmission arm 203 can be integrally formed with the main connecting portion 201. The second force transmission arm 203 can also be an independent component, and the first end of the second force transmission arm 203 is connected to the main connecting portion 201 and the first force transmission arm 202 to form a whole. One end of the second force transmission arm 203 is connected to the crossbeam 40, and the other end of the second force transmission arm 203 can be connected to the main connecting portion 201. The other end of the second force transmission arm 203 can also be connected to the first force transmission arm 202. The other end of the second force transmission arm 203 can also be connected to both the main connecting portion 201 and the first force transmission arm 202.

[0119] By providing a second force transmission arm 203 between two adjacent first force transmission arms 202, additional connection points are added to the connection between the first force transmission arm 202 and the crossbeam 40. When the force transmission connector 20 is subjected to an impact force, the impact force can be transmitted along the second force transmission arm 203 and the first force transmission arm 202 to multiple locations on the crossbeam 40, further dispersing the impact force. This reduces the risk of deformation caused by excessively concentrated impact force on a local area of ​​the crossbeam 40, improves the impact resistance of the crossbeam 40 on the entire chassis 100, and thus improves the safety of the battery.

[0120] In some embodiments, see Figure 11 The second force transmission arm 203 is connected to both the main connecting part 201 and the first force transmission arm 202.

[0121] By connecting the second force transmission arm 203 to both the main connection portion 201 and the first force transmission arm 202 , the connection strength of the second force transmission arm 203 can be increased, thereby achieving the purpose of increasing the overall strength of the force connection component.

[0122] In some embodiments, see Figure 11 The first end of the second force transmission arm 203 is connected to the main connecting portion. The second end of the second force transmission arm 203 is connected to the crossbeam 40. The distance between the first end of the second force transmission arm 203 and the first end of the first force transmission arm 202 is smaller than the distance between the second end of the second force transmission arm 203 and the second end of the first force transmission arm 202.

[0123] The distance between the first end of the second force transmission arm 203 and the first end of the first force transmission arm 202 refers to the straight-line distance between the first end of the second force transmission arm 203 and the first end of the first force transmission arm 202, and the distance between the second end of the second force transmission arm 203 and the second end of the first force transmission arm 202 refers to the straight-line distance between the second end of the second force transmission arm 203 and the second end of the first force transmission arm 202. The distance between the first end of the second force transmission arm 203 and the first end of the first force transmission arm 202 is smaller than the distance between the second end of the second force transmission arm 203 and the second end of the first force transmission arm 202. The minimum distance between the first end of the second force transmission arm 203 and the first end of the first force transmission arm 202 can be zero, that is, in addition to being connected to the main connecting portion 201, the first end of the second force transmission arm 203 is also connected to the first end of the first force transmission arm 202.

[0124] The distance between the first ends of the two first force transmission arms 202 is smaller than the distance between the second ends of the two first force transmission arms 202, so that the two first force transmission arms 202 are set at an angle, and the two first force transmission arms 202 and the main connecting part 201 form a "human" or "eight" shape. At this time, a second force transmission arm 203 is arranged between the two first force transmission arms 202, and the distance between the first end of the second force transmission arm 203 and the first end of the first force transmission arm 202 is smaller than the distance between the second end of the second force transmission arm 203 and the second end of the first force transmission arm 202, so that the entire force transmission connector 20 forms a "claw" shaped structure, which can make the two first force transmission arms 202 support each other. After the force transmission connector 20 is respectively connected to the two positions of the subframe 30 and the battery casing, a triangular structure or a structure close to a triangular structure is formed, and through the setting of the second force transmission arm 203, a supporting component can be added inside the above-mentioned triangular structure, which can further enhance the stability of the connection between the force transmission connector 20 and the crossbeam 40.

[0125] In some embodiments, there may be multiple second force transmission arms 203, each of which is located in the area between the two first force transmission arms 202. Furthermore, the first ends of the multiple second force transmission arms 203 are connected to the first force transmission arms 202 and / or the main connecting portion 201, and the second ends of the multiple second force transmission arms 203 are spaced apart from each other and connected to the crossbeam 40. The multiple second force transmission arms 203 can further disperse the impact force on the force transmission connector 20.

[0126] In some embodiments, see Figure 11 The force transmission connecting member 20 further includes a third connection reinforcement portion 206 , which connects the first force transmission arm 202 and the second force transmission arm 203 .

[0127] The third connection reinforcement portion 206 is a support member having a certain degree of rigidity. The third connection reinforcement portion 206 can be in the shape of a plate, a strip, or a block. The third connection reinforcement portion 206 connects the first force transmission arm 202 and the second force transmission arm 203. This means that the third connection reinforcement portion 206 is located between the first force transmission arm 202 and the second force transmission arm 203. One end of the third connection reinforcement portion 206 is connected to the first force transmission arm 202, and the other end of the third connection reinforcement portion 206 is connected to the second force transmission arm 203.

[0128] Because the first force transmission arm 202 and the second force transmission arm 203 are respectively connected to different parts of the crossbeam 40, there is a certain gap area between the first force transmission arm 202 and the second force transmission arm 203. As a result, when the entire force transmission connector 20 is subjected to force, the first force transmission arm 202 and the second force transmission arm 203 on the force transmission connector 20 may move relative to each other, causing the force transmission connector 20 to deform, thereby affecting the strength and force transmission effect of the entire force transmission connector 20. At this time, by providing a third connection reinforcement portion 206 between the first force transmission arm 202 and the second force transmission arm 203, and connecting the first force transmission arm 202 and the second force transmission arm 203 through the third connection reinforcement portion 206, the risk of relative movement between the first force transmission arm 202 and the second force transmission arm 203 can be reduced under the action of the third connection reinforcement portion 206, thereby enhancing the overall strength of the force transmission connector 20.

[0129] In some embodiments, the third connection reinforcement portion 206 , the first force transmission arm 202 , and the second force transmission arm 203 form a triangular cavity.

[0130] By adopting the solution provided in this embodiment, the overall strength of the entire force transmission connection member 20 can be improved.

[0131] In some embodiments, see Figure 4 、 Figure 7 as well as Figure 10 The force transmission connection member 20 is provided with a reinforcement structure 209. The reinforcement structure 209 protrudes from the surface of the force transmission connection member 20. The reinforcement structure 209 is used to enhance the mechanical strength of the force transmission connection member 20.

[0132] The reinforcement structure 209 is a component of a certain volume. The reinforcement structure 209 protrudes from the surface of the force-transmitting connector 20. The reinforcement structure 209 can be integrally formed with the force-transmitting connector 20, or it can be a separate component and fixed to the force-transmitting connector 20 by surfacing, welding, fasteners, etc. The shape of the reinforcement structure 209 can be a block, strip, plate, etc., or a combination of multiple shapes.

[0133] By protruding a reinforcement structure 209 on the surface of the force transmission connector 20, the local thickness of the force transmission connector 20 at the position where the reinforcement structure 209 is located can be increased, thereby increasing the mechanical strength of the force transmission connector 20, allowing the force transmission connector 20 to withstand greater impact force and improving the safety of the frame structure.

[0134] In some embodiments, see Figure 11 The reinforcement structure 209 includes a first protrusion 219. The first protrusion 219 is disposed around at least a portion of an edge of the first force transmission arm 202 and / or the second force transmission arm 203.

[0135] The first protrusion 219 is a component having a certain height.

[0136] The first protrusion 219 surrounds at least part of the edge of the first force transmission arm 202 and / or the second force transmission arm 203, which includes at least the following situations: first, the first protrusion 219 is only provided on the first force transmission arm 202, and surrounds the edge of the first force transmission arm 202, or surrounds a part of the edge of the first force transmission arm 202; second, the first protrusion 219 is only provided on the second force transmission arm 203, and surrounds the edge of the second force transmission arm 203, or surrounds a part of the edge of the second force transmission arm 203. The edge of the force transmission arm 203; the third type, the first protrusion 219 is set on both the first force transmission arm 202 and the second force transmission arm 203, the first protrusion 219 set on the first force transmission arm 202 is set around the edge of the first force transmission arm 202, or around a part of the edge of the first force transmission arm 202, the first protrusion 219 set on the second force transmission arm 203 is set around the edge of the second force transmission arm 203, or around a part of the edge of the second force transmission arm 203.

[0137] The edge of the first force transmission arm 202 refers to a structure having a certain width connected to the outer side wall of the first force transmission arm 202. The edge of a portion of the first force transmission arm 202 refers to a portion of the first force transmission arm 202 having the first protrusion 219, while the other portion does not have the first protrusion 219, and the first protrusion 219 is only provided around the edge of the portion of the first force transmission arm 202 having the first protrusion 219. The edge of the second force transmission arm 203 refers to a structure having a certain width connected to the outer contour of the second force transmission arm 203. The edge of a portion of the second force transmission arm 203 refers to a portion of the second force transmission arm 203 having the first protrusion 219, while the other portion does not have the first protrusion 219, and the first protrusion 219 is only provided around the edge of the portion of the second force transmission arm 203 having the first protrusion 219.

[0138] The reinforcing structure 209 is in the form of a first protrusion 219, and the first protrusion 219 is arranged around the edge of the first force transmission arm 202 and / or the second force transmission arm 203, which can strengthen the first force transmission arm 202 and / or the second force transmission arm 203, which are the main force-bearing parts when subjected to impact force, thereby ensuring the overall strength of the force transmission connector 20.

[0139] In some embodiments, see Figure 11 The reinforcement structure 209 further includes a second protrusion 229. The second protrusion 229 is disposed around at least a portion of the edge of the first connection reinforcement portion 204, the second connection reinforcement portion 205 and / or the third connection reinforcement portion 206.

[0140] The second protrusion 229 also refers to a component having a certain height dimension.

[0141] The second protrusion 229 surrounds at least part of the edge of the first connection reinforcement portion 204, the second connection reinforcement portion 205 and / or the third connection reinforcement portion 206, including at least the following situations: first, the second protrusion 229 is only provided on the first connection reinforcement portion 204, and is arranged around the edge of the first connection reinforcement portion 204, or is arranged around the edge of a local area in the first connection reinforcement portion 204; second, the second protrusion 229 is only provided on the second connection reinforcement portion 205, and is arranged around the edge of the second connection reinforcement portion 205, or is arranged around the edge of a local area in the second connection reinforcement portion 205; third, the second protrusion 229 is only provided on the second connection reinforcement portion 205, and is arranged around the edge of the second connection reinforcement portion 205, or is arranged around the edge of a local area in the second connection reinforcement portion 205; 9 is only provided on the third connection reinforcement portion 206, and is provided around the edge of the third connection reinforcement portion 206, or is provided around the edge of a local area in the third connection reinforcement portion 206; the fourth type, the second protrusion 229 is provided not only on the first connection reinforcement portion 204, but also on the second connection reinforcement portion 205, the second protrusion 229 provided on the first connection reinforcement portion 204 is provided around the edge of the first connection reinforcement portion 204, or is provided around the edge of a local area in the first connection reinforcement portion 204, the second protrusion 229 provided on the second connection reinforcement portion 205 is provided around the edge of the second connection reinforcement portion 205, or is provided around the second The edge of the local area of ​​the connection reinforcement part 205 is set; the fifth type, the second protrusion 229 is not only set on the first connection reinforcement part 204, but also on the third connection reinforcement part 206, the second protrusion 229 set on the first connection reinforcement part 204 is set around the edge of the first connection reinforcement part 204, or around the edge of the local area of ​​the first connection reinforcement part 204, the second protrusion 229 set on the third connection reinforcement part 206 is set around the edge of the third connection reinforcement part 206, or around the edge of the local area of ​​the third connection reinforcement part 206; the sixth type, the second protrusion 229 is not only set on the second connection reinforcement The reinforcing portion 205 is also provided on the third connection reinforcing portion 206, and the second protrusion 229 provided on the second connection reinforcing portion 205 is arranged around the edge of the second connection reinforcing portion 205, or around the edge of a local area in the second connection reinforcing portion 205, and the second protrusion 229 provided on the third connection reinforcing portion 206 is arranged around the edge of the third connection reinforcing portion 206, or around the edge of a local area in the third connection reinforcing portion 206; the seventh type, the first connection reinforcing portion 204, the second connection reinforcing portion 205 and the third connection reinforcing portion 206 are all provided with a second protrusion 229, and the arrangement method is the same as the other cases mentioned above.

[0142] The provision of the second protrusion 229 can strengthen the strength of the first connection reinforcement portion 204 , the second connection reinforcement portion 205 and / or the third connection reinforcement portion 206 , thereby further improving the overall strength of the force transmission connection member 20 .

[0143] In some embodiments, see Figure 5 、 Figure 8 as well as Figure 11 There are two first force transmission arms 202 , and the extension directions of the two first force transmission arms 202 are set at an angle.

[0144] The extending direction of the first force transmission arm 202 refers to the force transmission direction of the first force transmission arm 202 , and is also the direction of a line from the connection point between the first force transmission arm 202 and the main connecting part 201 to the connection point between the first force transmission arm 202 and the crossbeam.

[0145] By setting the extension directions of the two first force transmission arms 202 at an angle, the two first force transmission arms 202 can form a shape similar to an "eight" or a "person", so that the two first force transmission arms 202 can support each other. After the force transmission connector 20 is connected to the two positions of the subframe 30 and the battery housing respectively, a triangular or nearly triangular structure is formed, so that the connection and installation of the entire force transmission connector 20 and the crossbeam 40 are more stable, thereby improving the stability of the frame structure.

[0146] In some embodiments, see Figure 4 , the force transmission connection member 20 is an integrally formed structure.

[0147] The force transmission connector 20 is an integrally formed structure, which means that all parts of the force transmission connector 20 are integrally formed. The parts of the force transmission connector 20 may include a main connection part 201, a first force transmission arm 202, and a first connection reinforcement part 204; the parts of the force transmission connector 20 may also include a main connection part 201, a first force transmission arm 202, a second force transmission arm 203, a first connection reinforcement part 204, and a second connection reinforcement part 205; the parts of the force transmission connector 20 may also include a main connection part 201, a first force transmission arm 202, a second force transmission arm 203, and a third connection reinforcement part 206. The material of the force transmission connector 20 may be a metal material, such as iron, aluminum, alloy, etc., and may be processed and formed by casting, machining, 3D printing, or die casting; the force transmission connector 20 may also be made of polymer materials, nanomaterials, etc., and may be processed and formed by injection molding, 3D printing, etc.

[0148] The entire force transmission connector 20 adopts an integrally formed structure, which can improve the overall strength of the force transmission connector 20, and at the same time simplify the production steps of the force transmission connector 20 and improve production efficiency.

[0149] In some embodiments, see Figure 3 The force transmission connection member 20 is detachably connected to the subframe 30 and / or the crossbeam 40 .

[0150] A detachable connection means that two interconnected components can be removed after being connected, for example, by fasteners, snap-fitting, or plug-in connection. "The force-transmitting connector 20 is detachably connected to the subframe 30 and / or the crossbeam 40" includes at least the following situations: first, the force-transmitting connector 20 is detachably connected to the subframe 30; second, the force-transmitting connector 20 is detachably connected to the crossbeam 40; and third, the force-transmitting connector 20 is detachably connected to both the subframe 30 and the crossbeam 40.

[0151] By detachably connecting the force transmission connector 20 to the subframe 30 and the battery housing, the entire CTC (Cell To Chassis, which refers to the technology of integrating the battery into the chassis 100) platform can be relied upon to improve the CTC platform level. Based on different vehicle models, it can be determined whether to install the force transmission connector 20 according to actual conditions.

[0152] In some embodiments, see Figure 3 The force transmission connection member 20 is connected to the subframe 30 and / or the crossbeam 40 via fasteners.

[0153] Connecting via fasteners means inserting a threaded fastener (e.g., a screw, bolt, or stud) through two components, then inserting a nut onto the screw, bolt, or stud. The nut is rotated to bring the nut and cap closer together, thereby securing the two components. "Connecting the force-transmitting connector 20 to the subframe 30 and / or crossbeam 40 via fasteners" includes at least the following scenarios: first, the force-transmitting connector 20 is connected to the subframe 30 via fasteners; second, the force-transmitting connector 20 is connected to the crossbeam 40 via fasteners; and third, the force-transmitting connector 20 is connected to both the subframe 30 and the crossbeam 40 via fasteners. Disassembly requires simply rotating the nut in the opposite direction. For example, when connecting the force-transmitting connector 20 to the subframe 30, a bolt is inserted through the force-transmitting connector 20 and the subframe 30, and a nut is installed on the bolt. The two components are then connected and secured by rotating the nut. Disassembly requires simply rotating the nut in the opposite direction. The connection and disassembly process of the force transmission connector 20 and the battery housing is the same as the above process and will not be repeated here.

[0154] The use of fasteners for connection can make the connection between the force transmission connector 20 and the subframe 30 and the crossbeam 40 more convenient and firm, improve assembly efficiency, and also save the production cost of the chassis 100.

[0155] In some embodiments, see Figure 4 、 Figure 7 as well as Figure 10 The force transmission connector 20 is also provided with a plurality of mounting holes 208 , and the mounting holes 208 are used for fasteners to pass through.

[0156] The mounting hole 208 is a hole structure with both ends open. The size of the mounting hole 208 matches the size of the fastener. The mounting hole 208 can be integrally formed with the force-transmitting connector 20 during the manufacturing process. The mounting hole 208 can also be formed through post-processing, such as machining, electric spark discharge, or stamping. The position of the mounting through hole 208 on the force transmission connector 20 can be set according to the specific shape of the force transmission connector 20. When the force transmission connector 20 includes a main connection part 201 and two first force transmission arms 202, the mounting through hole 208 is respectively set on the main connection part 201 and the second end of the first force transmission arm 202, wherein the number of the mounting through holes 208 on the main connection part 201 can be multiple; when the force transmission connector 20 includes a main connection part 201, a second force transmission arm 203 and two first force transmission arms 202, the mounting through hole 208 can be set on the main connection part 201, the second end of the first force transmission arm 202 and the second end of the second force transmission arm 203, wherein the number of the mounting through holes 208 on the main connection part 201 can be multiple.

[0157] By providing the installation through hole 208 on the force transmission connector 20, when the force transmission connector 20 is connected to the subframe 30 or the battery housing, it is convenient for the fastener to pass through the force transmission connector 20, making the installation of the force transmission connector 20 more convenient.

[0158] In some embodiments, see Figure 4 、 Figure 7 as well as Figure 10 A reinforcing boss is provided around the mounting hole 208 , and the reinforcing boss protrudes from the surface of the force transmission connector 20 .

[0159] The reinforcing boss refers to a component with a certain height dimension. The reinforcing boss can be integrally formed with the force transmission connector 20, or the reinforcing boss can be an independent component fixed to the force transmission connector 20 by welding or other means.

[0160] By providing a reinforcing boss protruding from the surface of the force transmission connector 20 around the mounting hole 208, the thickness of the force transmission connector 20 at the mounting hole 208 can be increased, thereby improving the strength of the force transmission connector 20 at the mounting hole 208, and making the connection between the force transmission connector 20 and the subframe 30 or the battery housing safer and more stable.

[0161] In some embodiments, the force transmission connection member 20 is a plate-shaped structure as a whole.

[0162] The plate-like structure means that the force-transmitting connector 20 has a relatively small thickness but a relatively large length and width. The shape of the plate-like structure is compatible with the structure of the chassis 100. The force-transmitting connector 20 can extend along a single plane to form a flat plate structure, or it can bend during the extension process.

[0163] By configuring the force transmission connector 20 as a plate-like structure, the space occupied by the force transmission connector 20 as a whole can be reduced while ensuring the strength and impact resistance of the force transmission connector 20 itself.

[0164] In some embodiments, see Figure 4 、 Figure 7 as well as Figure 10 A weight-reducing structure is provided on the force-transmitting connection member 20 , and the weight-reducing structure is used to reduce the weight of the force-transmitting connection member 20 .

[0165] The weight-reducing structure refers to a structure that can reduce the overall weight of the force-transmitting connector 20. The weight-reducing structure removes unimportant parts of the force-transmitting connector 20, thereby reducing the weight of the force-transmitting connector 20 itself without affecting the strength of the force-transmitting connector 20 itself. The weight-reducing structure can be a weight-reducing hole or a weight-reducing groove, etc.

[0166] By providing a weight-reducing structure on the force transmission connector 20 , the weight of the force transmission connector 20 itself can be reduced without affecting the strength of the force transmission connector 20 itself, making the entire force transmission connector 20 lighter.

[0167] In some embodiments, see Figure 4 、 Figure 7 as well as Figure 10 The weight-reducing structure includes a weight-reducing hole 207 provided on the force-transmitting connecting member 20 , and the weight-reducing hole 207 is provided through the force-transmitting connecting member 20 .

[0168] The weight-reducing hole 207 refers to a hole structure with a certain depth. Without affecting the strength of the force-transmitting connector 20, the weight-reducing hole 207 can be distributed in various parts of the force-transmitting connector 20. The shape of the weight-reducing hole 207 can be adapted to the shape of each part of the force-transmitting connector 20 to reduce the adverse effects of the setting of the weight-reducing hole 207 on the strength of the corresponding part of the force-transmitting connector 20.

[0169] By providing a weight-reducing hole 207 on the force-transmitting connector 20, and the weight-reducing hole 207 is provided through the force-transmitting connector 20, the weight-reducing hole 207 forms a hole structure with open ends and a flat inner wall. While reducing the overall weight of the force-transmitting connector 20 through the weight-reducing hole 207, the manufacturing cost of the force-transmitting connector 20 is reduced.

[0170] In some embodiments, see Figure 3 There are multiple force transmission connectors 20, and the multiple force transmission connectors 20 are arranged at intervals.

[0171] The spacing between multiple force transmission connectors 20 means that there is always a certain distance between adjacent force transmission connectors 20. Multiple force transmission connectors 20 are all connected to the crossbeam 40, and since the front end of the crossbeam 40 is generally arranged along the width direction of the chassis 100, the multiple force transmission connectors 20 are also spaced apart along the width direction of the chassis 100.

[0172] By providing multiple force-transmitting connectors 20 between the subframe 30 and the crossbeam 40, when the front end of the vehicle 1000 is impacted, the impact force on the subframe 30 is transmitted to the crossbeam 40 via the force-transmitting connectors 20. When multiple force-transmitting connectors 20 are provided, the impact force can be dispersed. Providing multiple force-transmitting connectors 20 simultaneously also increases the number of connection points on the crossbeam 40, distributing the impact force on the crossbeam 40 at multiple locations, thereby avoiding concentrating the impact force on the crossbeam 40 at a single location. This reduces the deformation of the crossbeam 40 during an impact, making the entire frame structure more impact-resistant and thus protecting the battery.

[0173] In some embodiments, see Figure 2 and Figure 3 The sub-frame 30 has two connecting parts, and the number of the force transmission connecting members 20 is two, and the two force transmission connecting members 20 are respectively connected to the two connecting parts.

[0174] The connecting portion refers to two protruding parts on the sub-frame 30 . The connecting portion is a part of the sub-frame 30 and is usually an integral structure with the sub-frame 30 . The force transmission connector 20 is connected to the two connecting portions respectively.

[0175] By providing two force transmission connectors 20 , the connection strength between the sub-frame 30 and the crossbeam 40 can be ensured while reducing the manufacturing cost of the entire frame structure.

[0176] In some embodiments, see Figure 3 , the two force transmission connecting parts 20 are arranged in mirror symmetry.

[0177] The mirror-symmetric arrangement of the two force-transmitting connectors 20 means that the two force-transmitting connectors 20 are symmetrically arranged relative to one another with respect to a plane, which may be a plane arranged along the height direction of the vehicle body 200 and passing through the central axis of the vehicle body 200. The mirror-symmetry of the two force-transmitting connectors 20 includes symmetry in arrangement position and symmetry in shape.

[0178] By arranging the two force-transmitting connectors 20 in a mirror-symmetrical manner, on the one hand, the weight of the frame structure can be more evenly distributed along the width direction of the vehicle 1000, and on the other hand, after the front end of the frame structure is hit, the forces on both sides of the entire crossbeam along the width direction of the vehicle body can be equal.

[0179] According to some embodiments of the present application, a chassis 100 is provided, comprising a frame structure according to any of the above solutions. The chassis 100 provided in this embodiment, comprising a frame structure according to any of the above solutions, can, on the one hand, improve the force transmission efficiency of the frame structure to a certain extent, and, on the other hand, disperse impact forces, thereby improving the impact resistance of the entire frame structure and chassis 100 and reducing the risk of deformation of the frame structure due to impact.

[0180] According to some embodiments of the present application, a vehicle 1000 is provided, comprising a chassis 100 according to any of the above solutions. Chassis 100 is used to support a vehicle body 200 and, together with the vehicle body 200, constitutes the entire vehicle 1000. The vehicle 1000 provided in the embodiments of the present application, comprising chassis 100 according to any of the above solutions, can, on the one hand, improve the force transmission efficiency of the vehicle frame structure to a certain extent, and, on the other hand, disperse impact forces, thereby improving the impact resistance of the entire vehicle frame structure and chassis 100 and reducing the risk of deformation of the frame structure due to impact.

[0181] According to some embodiments of the present application, referring to Figure 2 and Figure 3 , and further reference Figures 4 to 12 An embodiment of the present application provides a vehicle frame structure. The frame structure includes a main frame 10, a subframe 30, a force transmission connector 20, and a crossbeam 40. The main frame 10 has a primary force transmission path. The subframe 30 is connected to the main frame 10. The crossbeam 40 is integrated into the main frame 10. The crossbeam 40 is spaced apart from the subframe 30 and connected via the force transmission connector 20. The subframe 30, the force transmission connector 20, and the crossbeam 40 form a secondary force transmission path.

[0182] The force transmission connector 20 can be arranged in a variety of ways. For ease of understanding, examples are given below.

[0183] In some embodiments, see Figure 4 The force transmission connecting member 20 includes a main connecting portion 201, a first connecting reinforcement portion 204, and two first force transmission arms 202. The main connecting portion 201 is located on the side of the first force transmission arm 202 close to the sub-frame 30. The multiple first force transmission arms 202 are connected to the sub-frame 30 through the main connecting portion 201. The first connecting reinforcement portion 204 is connected between the two first force transmission arms 202. Figure 5 The first force transmission arm 202, the main connecting portion 201, and the first connection reinforcement portion 204 form at least one closed structure. The first end of each first force transmission arm 202 is connected to the main connecting portion 201, and the second end of each first force transmission arm 202 is connected to the crossbeam 40. The distance between the first ends of the two first force transmission arms 202 is smaller than the distance between their second ends. In this case, the two first force transmission arms 202 can be arranged in an "eight" shape or a similar "eight" shape.

[0184] In some embodiments, see Figure 7 The force transmission connector 20 includes a main connection portion 201, a first connection reinforcement portion 204, a second connection reinforcement portion 205 and two first force transmission arms 202. The main connection portion 201 is located on the side of the first force transmission arm 202 close to the sub-frame 30, and the first force transmission arms 202 are connected to the sub-frame 30 through the main connection portion 201. The first connection reinforcement portion 204 is connected between the two first force transmission arms 202, one end of the second connection reinforcement portion 205 is connected to the first connection reinforcement portion 204, and the other end of the second connection reinforcement portion 205 is connected to the first force transmission arm 202 and the main connection portion 201. The second connection reinforcement portion 205, the first force transmission arm 202 and the first connection reinforcement portion 204 form a triangular cavity. In this embodiment, the force transmission connector 20 is designed in a herringbone structure, which has higher force transmission efficiency and can improve force transmission stability to a certain extent.

[0185] In some embodiments, see Figure 10 The force transmission connector 20 includes a main connection portion 201, a third connection reinforcement portion 206, a second force transmission arm 203, and two first force transmission arms 202. The main connection portion 201 is located on the side of the first force transmission arm 202 close to the subframe 30, and multiple first force transmission arms 202 are connected to the subframe 30 through the main connection portion 201. The first end of the second force transmission arm 203 is connected to the first force transmission arm 202 and the main connection portion 201, and the second end of the second force transmission arm 203 is connected to the crossbeam 40. The third connection reinforcement portion 206 is arranged between the first force transmission arm 202 and the second force transmission arm 203. The distance between the first end of the second force transmission arm 203 and the first end of the first force transmission arm 202 is smaller than the distance between the second end of the second force transmission arm 203 and the second end of the first force transmission arm 202. The third connection reinforcement portion 206, the first force transmission arm 202, and the second force transmission arm 203 form a triangular cavity. In this embodiment, the force transmission connector 20 is designed in a claw-shaped structure, which has higher force transmission efficiency and can improve force transmission stability to a certain extent.

[0186] Of course, in other embodiments, the force transmission connection member 20 may also be arranged in other ways.

[0187] Based on the above embodiments, please refer to Figure 4 、 Figure 7 as well as Figure 10A reinforcement structure 209 is provided on the force transmission connector 20. The reinforcement structure 209 protrudes from the surface of the force transmission connector 20. The reinforcement structure 209 is used to enhance the mechanical strength of the force transmission connector 20. The reinforcement structure 209 includes a first protrusion 219 and a second protrusion 229. The first protrusion 219 is provided around at least a portion of the edges of the first force transmission arm 202 and the second force transmission arm 203. The second protrusion 229 is provided around at least a portion of the edges of the first connection reinforcement portion 204, the second connection reinforcement portion 205, and the third connection reinforcement portion 206.

[0188] The force transmission connector 20 is detachably connected to the subframe 30 and the crossbeam 40 by fasteners. Figure 4 、 Figure 7 as well as Figure 10 The force transmission connector 20 is further provided with a plurality of mounting holes 208 for fasteners to pass through. A reinforcement boss is provided around the mounting holes 208, and the reinforcement boss protrudes from the surface of the force transmission connector 20.

[0189] In addition, a weight-reducing structure is provided on the force transmission connection member 20, and the weight-reducing structure is used to reduce the weight of the force transmission connection member 20. The weight-reducing structure includes a weight-reducing hole 207 provided on the force transmission connection member 20, and the weight-reducing hole 207 is provided through the force transmission connection member 20.

[0190] The sub-frame 30 has two connecting portions, and the number of the force transmission connectors 20 is two. The two force transmission connectors 20 are respectively connected to the two connecting portions.

[0191] In related technologies, the frame structure has a single force transmission path, resulting in low force transmission efficiency. When the CTC front-end connection strength is low, the overall bending and torsional stiffness of the CTC is low, and the degree of component platformization is low. However, the frame structure provided in this embodiment, by providing a force transmission connector 20, adds a force transmission path from the subframe 30 to the force transmission connector 20 to the crossbeam 40, forming a secondary force transmission path. The primary force transmission path is from the front longitudinal beam to the front torsion box to the sill beam. The formation of a dual force transmission path can improve force transmission efficiency during a collision and increase system stability. Furthermore, after adding the force transmission connector 20, the subframe 30 overlaps the front torsion box and the force transmission connector 20, and the force transmission connector 20 overlaps the front frame of the crossbeam 40. This adds three mounting points, which can reduce front-end deformation, increase front-end connection strength, and enhance bending and torsional stiffness performance.

[0192] The force-transmitting connector 20 is a removable component that can be modified to a different size, shape, or properties as needed. It can also be omitted depending on usage requirements. Without the force-transmitting connector 20, the subframe and torsion box remain fixedly connected, allowing the subframe and the lower anti-collision beam to withstand lower-level collisions and then transfer the impact to the vehicle body.

[0193] The force transmission connector 20 can be based on the CTC platform, improving the CTC platform's degree of integration. Based on different vehicle models, the decision to plan and install the force transmission connector 20 can be made based on actual needs, which is convenient and quick. In summary, the force transmission connector 20 provides a force transmission path based on the subframe 30, which can not only improve the force transmission efficiency during a collision, but also enhance the safety performance of the battery and increase system stability. The force transmission connector 20 can be a one-piece die-cast aluminum part, which has a simple and fast manufacturing process, is lightweight, and takes up little space. The current force transmission connector 20 is a detachable component that can be based on the CTC platform. The need for the force transmission connector 20 can be determined based on the needs of different vehicle models.

[0194] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A frame structure comprising a main frame, a sub-frame and a crossbeam, wherein the main frame has a main force transmission path, the sub-frame is connected to the main frame, and the crossbeam is integrated with the main frame, characterized in that: The frame structure further includes a force transmission connector. The crossbeam and the sub-frame are spaced apart and connected via the force transmission connector. The sub-frame, the force transmission connector and the crossbeam form a secondary force transmission path.

2. The frame structure according to claim 1, wherein: The force transmission connecting member has a plurality of connection points, and the plurality of connection points are respectively connected to different positions of the cross beam, so as to divide the impact force transmitted by the sub-frame into a plurality of component forces and transmit them to different positions of the cross beam.

3. The frame structure according to claim 1 or 2, characterized in that: The force transmission connecting member includes multiple first force transmission arms, both ends of each first force transmission arm are respectively connected to the subframe and the crossbeam, and different first force transmission arms are respectively connected to different positions of the crossbeam. The multiple first force transmission arms are used to divide the impact force transmitted by the subframe into multiple component forces and transmit them to different positions of the crossbeam.

4. The frame structure according to claim 3, wherein: The force transmission connecting member further includes a main connecting portion, which is located on a side of the first force transmission arm close to the sub-frame, and a plurality of the first force transmission arms are connected to the sub-frame through the main connecting portion.

5. The vehicle frame structure according to claim 4, wherein: The force transmission connecting member further includes a first connection reinforcement portion, and two adjacent first force transmission arms are connected via the first connection reinforcement portion.

6. The vehicle frame structure according to claim 5, wherein: The first force transmission arm, the main connecting portion and the first connection reinforcement portion form at least one closed structure.

7. The vehicle frame structure according to claim 6, wherein: The force-transmitting connecting member further comprises a second connection reinforcement portion, which is located within the closed structure and connects the first connection reinforcement portion and a first component, wherein the first component is the main connection portion and / or the first force-transmitting arm.

8. The vehicle frame structure according to claim 7, wherein: The second connection reinforcement portion, the first force transmission arm and the first connection reinforcement portion form a triangular cavity.

9. The vehicle frame structure according to any one of claims 3 to 8, characterized in that: The first end of the first force transmission arm is connected to the main connecting part, the second end of the first force transmission arm is connected to the crossbeam, and the distance between the first ends of at least two of the first force transmission arms is smaller than the distance between the second ends.

10. The vehicle frame structure according to any one of claims 3 to 9, characterized in that: The force transmission connecting member also includes a second force transmission arm, and the second force transmission arm is located between two adjacent first force transmission arms, the second force transmission arm connects the first component and the beam, and the first component is the main connecting part and / or the first force transmission arm.

11. The vehicle frame structure according to claim 10, wherein: The first end of the second force transmission arm is connected to the main connecting part, the second end of the second force transmission arm is connected to the crossbeam, and the distance between the first end of the second force transmission arm and the first end of the first force transmission arm is smaller than the distance between the second end of the second force transmission arm and the second end of the first force transmission arm.

12. The vehicle frame structure according to claim 10 or 11, wherein: The force transmission connecting member further includes a third connection reinforcement portion, and the third connection reinforcement portion connects the first force transmission arm and the second force transmission arm.

13. The vehicle frame structure according to claim 12, wherein: The third connection reinforcement portion, the first force transmission arm, and the second force transmission arm form a triangular cavity.

14. The vehicle frame structure according to claim 12 or 13, wherein: The force transmission connection piece is provided with a reinforcement structure, which protrudes from the surface of the force transmission connection piece and is used to enhance the mechanical strength of the force transmission connection piece.

15. The vehicle frame structure according to claim 14, wherein: The reinforcement structure includes a first protrusion, and the first protrusion is arranged around at least a portion of an edge of the first force transmission arm and / or the second force transmission arm.

16. The vehicle frame structure according to claim 14 or 15, wherein: The reinforcement structure further includes a second protrusion, which is arranged around at least a portion of the edge of the first connection reinforcement portion, the second connection reinforcement portion and / or the third connection reinforcement portion.

17. The vehicle frame structure according to any one of claims 3 to 16, characterized in that: There are two first force transmission arms, and the extension directions of the two first force transmission arms form an angle.

18. The vehicle frame structure according to any one of claims 1 to 17, characterized in that: The force transmission connecting piece is an integrally formed structure.

19. The vehicle frame structure according to any one of claims 1 to 18, characterized in that: The force transmission connection member is detachably connected to the subframe and / or the crossbeam.

20. The vehicle frame structure according to any one of claims 1 to 19, characterized in that: The force transmission connection member is connected to the subframe and / or the crossbeam via fasteners.

21. The vehicle frame structure according to claim 20, wherein: The force transmission connection piece is also provided with a plurality of mounting holes, and the mounting holes are used for the fasteners to pass through.

22. The vehicle frame structure according to claim 21, wherein: A reinforcing boss is provided around the mounting through hole, and the reinforcing boss protrudes from the surface of the force transmission connection member.

23. The vehicle frame structure according to any one of claims 1 to 22, characterized in that: The force transmission connection member is provided with a weight reduction structure, and the weight reduction structure is used to reduce the weight of the force transmission connection member.

24. The vehicle frame structure according to claim 23, wherein: The weight-reducing structure includes a weight-reducing hole provided on the force-transmitting connecting member, and the weight-reducing hole is provided through the force-transmitting connecting member.

25. The vehicle frame structure according to any one of claims 1 to 24, characterized in that: There are multiple force transmission connectors, and the multiple force transmission connectors are spaced apart from each other.

26. The vehicle frame structure according to claim 25, wherein: The sub-frame has two connecting parts, the number of the force transmission connecting members is two, and the two force transmission connecting members are respectively connected to the two connecting parts.

27. The vehicle frame structure according to claim 26, wherein: The two force-transmitting connecting parts are arranged in mirror symmetry.

28. A chassis, characterized in that: Comprising the frame structure according to any one of claims 1 to 27.

29. A vehicle, characterized in that: Comprising a chassis as claimed in claim 28.

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