Vehicle body structure and vehicle

Abstract

A vehicle body structure, comprising: an upper vehicle body (100), wherein the upper vehicle body (100) comprises a framework (110) and a structural assembly (120), the structural assembly (120) is connected to the framework (110), the structural assembly (120) and the framework (110) define an accommodating compartment (130), and the material density of the framework (110) is greater than the material density of the structural assembly (120); and a lower vehicle body (200) connected to the upper vehicle body (100), wherein the lower vehicle body (200) is arranged separately from the accommodating compartment (130). Since the accommodating compartment is located within the upper vehicle body, when the lower vehicle body is impacted, the accommodating compartment deforms together with the upper vehicle body as a whole relative to the lower vehicle body; thus, the local deformation of the upper vehicle body is reduced, and the deformation of the accommodating compartment is also reduced, thereby lowering the risk of injury to passengers or damage to items within the accommodating compartment. Additionally, the present invention also relates to a vehicle.

Description

Vehicle body structure and traveling device

[0001] Related Art Cross Reference

[0002] The present application claims priority to the Chinese patent application No. 202410779957.4, filed on June 17, 2024, and entitled "A vehicle body structure and a traveling device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of vehicle body, in particular to a vehicle body structure and a traveling device. BACKGROUND

[0004] At present, with the development of the automobile industry, more and more automobiles enter the field of vision of consumers. Generally, a passenger compartment is arranged in the automobile to carry passengers or articles. However, in the process of collision, the risk of damage to passengers or articles is high. SUMMARY

[0005] One of the purposes of the present application is to provide a vehicle body structure to solve the problem that the risk of damage to users or articles is high in the process of collision of the prior art automobile; and the second purpose is to provide a traveling device.

[0006] In order to achieve the above-mentioned purposes, the technical scheme adopted by the present application is as follows:

[0007] A vehicle body structure comprises:

[0008] An upper vehicle body comprises a framework and a structural assembly; the structural assembly is connected with the framework, and the structural assembly and the framework define a containing cabin; the material strength of the framework is greater than the material strength of the structural assembly, and the material density of the framework is greater than the material density of the structural assembly;

[0009] A lower vehicle body is connected with the upper vehicle body; wherein the lower vehicle body and the containing cabin are arranged separately.

[0010] In some optional implementation manners: the framework is located in the structural assembly; and / or, the vehicle body structure further comprises:

[0011] An adhesive body; the upper vehicle body is connected with the lower vehicle body through the adhesive body.

[0012] In some optional implementation manners: the framework defines a front door opening communicated with the containing cabin, the framework defines a part of a rear door opening communicated with the containing cabin, and the structural assembly defines the remaining part of the rear door opening.

[0013] In some optional implementation manners, the accommodation cabin comprises a front cabin and a middle cabin arranged lengthwise adjacent to each other.

[0014] The skeleton and the first part of the structural assembly jointly define part of the space of the front cabin and the middle cabin; the second part of the structural assembly defines the remaining part of the space of the middle cabin.

[0015] In some optional implementation manners, the accommodation cabin further comprises a rear cabin arranged adjacent to the middle cabin; the structural assembly defines the rear cabin.

[0016] In some optional implementation manners, the skeleton comprises:

[0017] Two top longitudinal beams arranged widthwise apart;

[0018] Two bottom longitudinal beams arranged widthwise apart; the two bottom longitudinal beams are arranged at the bottom side of the two top longitudinal beams;

[0019] A top cross beam connected to the two top longitudinal beams respectively;

[0020] A bottom cross beam connected to the two bottom longitudinal beams respectively;

[0021] Two middle vertical beams arranged widthwise apart and corresponding to the position of the bottom cross beam; one of the two middle vertical beams is connected to one of the two top longitudinal beams and one of the two bottom longitudinal beams respectively, and the other of the two middle vertical beams is connected to the other of the two top longitudinal beams and the other of the two bottom longitudinal beams respectively;

[0022] Two front vertical beams arranged widthwise apart; one of the two front vertical beams is connected to one of the two top longitudinal beams and one of the two bottom longitudinal beams respectively, and the other of the two front vertical beams is connected to the other of the two top longitudinal beams and the other of the two bottom longitudinal beams respectively;

[0023] The two top longitudinal beams, the two bottom longitudinal beams, the top cross beam, the bottom cross beam, the two middle vertical beams and the two front vertical beams define the front cabin; the two top longitudinal beams, the two bottom longitudinal beams, the top cross beam, the bottom cross beam and the two middle vertical beams define part of the space of the middle cabin; and the structural assembly defines the remaining part of the space of the middle cabin.

[0024] In some optional implementation manners, the material of the lower vehicle body is aluminum alloy, the material of the skeleton is high-strength steel, and the material of the structural assembly is non-metal or carbon fiber.

[0025] In some optional implementation manners, the structural assembly comprises:

[0026] A support assembly connected to the skeleton;

[0027] A cover component, connected to the skeleton and / or the support component.

[0028] In some alternative implementations: the frame includes: a bottom crossbeam located on the bottom side of the accommodating compartment;

[0029] The structural components include:

[0030] The floor component is integrally disposed on the bottom side of the accommodating compartment along its length and is connected to the bottom crossbeam.

[0031] In some alternative implementations, the floor component includes:

[0032] The top fabric layer is located on the side facing the accommodating compartment;

[0033] The bottom fabric layup is located on the side opposite to the receiving chamber and is spaced apart from the top fabric layup;

[0034] At least one unidirectional layup is located between the top fabric layup and the bottom fabric layup.

[0035] In some alternative implementations: the ductility of the material of the underbody is greater than the ductility of the material of the structural components, and the ductility of the material of the underbody is greater than the ductility of the material of the frame; and / or,

[0036] The undercarriage includes at least two beams, which are connected by a connecting structure.

[0037] In some optional implementations: the lower body includes: a middle frame structure, the middle frame structure including:

[0038] Left main longitudinal beam;

[0039] The right main longitudinal beam is spaced apart from the left main longitudinal beam in the width direction;

[0040] The front main crossbeam is connected to the front end of the left main longitudinal beam and the front end of the right main longitudinal beam, respectively.

[0041] The rear main crossbeam is connected to the rear end of the left main longitudinal beam and the rear end of the right main longitudinal beam, respectively.

[0042] A space is defined between the left main longitudinal beam, the front main crossbeam, the right main longitudinal beam, and the rear main crossbeam; the left main longitudinal beam, the front main crossbeam, the right main longitudinal beam, and the rear main crossbeam are different structural components.

[0043] In some alternative implementations, the middle frame structure further includes:

[0044] At least one left reinforcing beam is connected to the left main longitudinal beam and the front main transverse beam, respectively;

[0045] At least one right reinforcing beam is connected to the right main longitudinal beam and the front main transverse beam, respectively.

[0046] In some optional implementations: the lower body further includes: a front frame structure; the front frame structure includes:

[0047] The left front longitudinal beam is connected to the front main cross beam;

[0048] The right front longitudinal beam is spaced apart from the left front longitudinal beam in the width direction and is connected to the front main cross beam;

[0049] The front crossbeam is connected to the front end of the left front longitudinal beam and the front end of the right front longitudinal beam, respectively.

[0050] The lower body also includes:

[0051] Two reinforcing structures are located at both ends of the front main crossbeam and are respectively connected to the left front longitudinal beam and the right front longitudinal beam.

[0052] In some alternative implementations, the reinforcement structure includes:

[0053] The first annular frame has a first wall and a second wall arranged adjacent to each other; the first wall is arranged along the length direction of the left front longitudinal beam or the right front longitudinal beam, and the second wall is arranged at the end side of the front main crossbeam along the length direction of the front main crossbeam.

[0054] The second annular frame has a third wall and a fourth wall arranged adjacent to each other, and is located on opposite sides of the left front longitudinal beam or the right front longitudinal beam, and the third wall is arranged along the length direction of the left front longitudinal beam or the right front longitudinal beam, and the fourth wall is arranged along the length direction of the front main crossbeam on the front main crossbeam.

[0055] In some alternative implementations: the first annular frame is triangular in shape, and the second annular frame is quadrilateral in shape;

[0056] The reinforcing structure also includes:

[0057] The first set of reinforcing ribs is arranged in a W shape inside the first annular frame and connected to the first annular frame;

[0058] The second set of reinforcing ribs is arranged in a cross shape inside the second annular frame and is connected to the second annular frame.

[0059] A driving device includes the vehicle body structure described in the embodiments of this application.

[0060] The beneficial effects of this application are:

[0061] (1) Since the compartment is located in the upper body, when the lower body is collided, the compartment will deform along with the upper body relative to the lower body. The deformation of the upper body will decrease, and the deformation of the compartment will also decrease, thereby reducing the risk of damage to passengers or items located in the compartment.

[0062] (2) The upper body also includes a frame. The strength of the upper body can be guaranteed by the strong frame, thereby further reducing the deformation of the compartment and further reducing the risk of damage to passengers or items located in the compartment.

[0063] (3) By using structural components with lower density, the weight of the vehicle body structure can be greatly reduced, thus achieving lightweighting of the vehicle body structure. Attached Figure Description

[0064] Figure 1 is a schematic diagram of an optional vehicle body structure in an embodiment of this application;

[0065] Figure 2 is a schematic diagram of an optional structure of the upper body in an embodiment of this application;

[0066] Figure 3 is a schematic diagram of an optional skeleton structure in an embodiment of this application;

[0067] Figure 4 is a schematic diagram of an optional structure of the floor component in an embodiment of this application;

[0068] Figure 5 is a schematic diagram of an optional flooring method in an embodiment of this application;

[0069] Figure 6 is a schematic diagram of an optional structure of the vehicle body in an embodiment of this application;

[0070] Figure 7 is a schematic diagram of Figure 6 from another perspective;

[0071] Figure 8 is an enlarged view of point A in Figure 7.

[0072] Among them, 100, upper body; 110, frame; 111, top longitudinal beam; 112, bottom longitudinal beam; 113, top transverse beam; 114, bottom transverse beam; 115, middle vertical beam; 116, front vertical beam; 120, structural component; 121, floor component; 1211, top fabric lay-up; 1212, bottom fabric lay-up; 1213, unidirectional lay-up; 122, top cover; 123, inner side panel; 124, outer side panel; 125, front bulkhead; 130, storage compartment; 131, front compartment; 132, middle compartment; 141, front door opening; 142, rear door opening; 20 0. Lower body; 210. Middle frame structure; 211. Left main longitudinal beam; 212. Right main longitudinal beam; 213. Front main crossbeam; 214. Rear main crossbeam; 215. Left reinforcing beam; 216. Right reinforcing beam; 217. Accommodation space; 220. Front frame structure; 221. Left front longitudinal beam; 222. Right front longitudinal beam; 223. Front bumper crossbeam; 230. Reinforcing structure; 231. First ring frame; 232. First set of reinforcing ribs; 233. Second ring frame; 234. Second set of reinforcing ribs; 240. Rear frame structure; 241. Rear straight beam; 242. Reinforcing crossbeam. Detailed Implementation

[0073] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0074] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0075] This application describes a vehicle body structure, as shown in Figure 1. The vehicle body structure includes an upper body 100 and a lower body 200. The upper body 100 includes a frame 110 and a structural component 120; the structural component 120 is connected to the frame 110, and the structural component 120 and the frame 110 define a receiving compartment 130; the material strength of the frame 110 is greater than the material strength of the structural component 120, and the material density of the frame 110 is greater than the material density of the structural component 120; the lower body 200 is connected to the upper body 100; wherein, the lower body 200 and the receiving compartment 130 are separated.

[0076] In related technologies, a passenger compartment is formed between the upper body and the lower body of a car. During a collision, the car often collides with the lower body. In this case, the deformation between the upper and lower bodies is significant, meaning the passenger compartment deforms considerably between the space within the upper body and the space within the lower body, resulting in a higher risk of injury to passengers or items within the passenger compartment. However, in the vehicle body structure of this application, since the accommodating compartment 130 is located within the upper body 100, when it collides with the lower body 200, the accommodating compartment 130 deforms along with the upper body 100 relative to the lower body 200. The local deformation of the upper body 100 is reduced, and the deformation of the accommodating compartment 130 is also reduced, thereby lowering the risk of injury to passengers or items within the accommodating compartment 130. Meanwhile, the upper body 100 also includes a frame 110. The strong frame 110 can ensure the strength of the upper body 100, thereby further reducing the deformation of the compartment 130 and further reducing the risk of damage to passengers or items located in the compartment 130. In addition, the low-density structural components 120 can greatly reduce the weight of the vehicle body structure, achieving lightweighting of the vehicle body structure.

[0077] In this embodiment, the structure of the upper body 100 is not limited. For example, as shown in FIG2, the upper body 100 may also have a front door opening 141 and a rear door opening 142 that are respectively connected to the accommodating compartment 130.

[0078] The materials of the frame 110 and the structural component 120 can be different, as long as the strength of the material of the frame 110 is greater than that of the material of the structural component 120, and the density of the material of the frame 110 is greater than that of the structural component 120. This increases the strength of the upper body 100 through the frame 110 and reduces the weight of the upper body 100 through the structural component 120. The materials of the various parts of the frame 110 can be the same or different. For example, the materials of the various parts of the frame 110 can be the same to ensure that the frame 110 as a whole has the same strength. As an example, the material of the frame 110 is high-strength steel, meaning that all parts of the frame 110 are made of high-strength steel. The materials of the various parts of the structural component 120 can be the same or different. For example, the materials of the various parts of the structural component 120 can be the same to facilitate the manufacturing of the upper body 100. As an example, the material of the structural component 120 can be non-metallic, meaning that all parts of the structural component 120 are made of non-metallic materials. In one application, the structural component 120 is made of carbon fiber, that is, all parts of the structural component 120 are made of carbon fiber, which can reduce the weight of the upper body 100 while meeting the strength requirements of the upper body 100.

[0079] The structural component 120 and the frame 110 can be fixedly connected by means of bonding, snap-fitting, riveting, threaded connection, etc. The form of the frame 110 is not limited. For example, the frame 110 can be a cage-like frame 110, that is, at least a portion of the accommodating compartment 130 is located within the frame 110 to improve the safety of the accommodating compartment 130. As an example, as shown in Figures 2 and 3, the frame 110 defines a portion of a front door opening 141 communicating with the accommodating compartment 130, and the frame 110 defines a portion of a rear door opening 142 communicating with the accommodating compartment 130. The structural component 120 defines the remaining portion of the rear door opening 142. To reduce the risk of collision damage to the vehicle body structure, the strength requirements for the front structural components of the vehicle body structure are high. Here, by placing the frame 110 around the front door opening 141 and the front area of ​​the rear door opening 142 on the front side of the vehicle body structure, the risk of collision damage to the vehicle body structure can be greatly reduced. At the same time, the lower density of the structural component 120 can also reduce the weight of the upper body 100. It should be noted that the front-to-back, left-to-right, and top-to-bottom directions described in this application are with reference to the driver inside the vehicle, as shown in Figures 1 to 3, 6, and 7. The form of structural component 120 is not limited. For example, structural component 120 may include a support component and a cover component. The support component is connected to the frame 110; the cover component is connected to the frame 110 and / or the support component. The support component may include a beam structure or a frame structure. The connection between the support component and the frame 110 can form the upper vehicle frame. As an example, the support component may include: two rear uprights spaced apart along the width direction, two rear longitudinal beams spaced apart along the width direction, and a rear crossbeam. The two ends of the rear crossbeam are connected to the two rear longitudinal beams, and the two rear longitudinal beams are connected to the top ends of the two rear uprights, so that the support component forms part of the upper vehicle frame. The support component and the frame 110 can be fixedly connected by means of adhesive, snap-fit, riveting, threaded connection, etc. The structure of the cover component is not limited. The cover component is used to define the housing compartment 130 and to make the appearance of the upper vehicle body 100 neater. The cover assembly can be connected to the frame 110 by means of bonding, snap-fitting, threaded connection, etc., and the cover assembly can also be connected to the support assembly by means of bonding, snap-fitting, threaded connection, etc. Of course, the cover assembly can also be connected to the frame 110 and the support assembly by means of bonding, snap-fitting, threaded connection, etc. For example, as shown in Figures 1 and 2, the cover assembly may include: floor piece 121, top cover 122, inner side panel 123, outer side panel 124, and front wall panel 125. The frame 110 can be located within the structural assembly 120; that is, the entire frame 110 can be located within the structural assembly 120, so that the high-strength frame 110 forms the core structure of the upper body 100. Of course, the frame 110 may also be only partially located within the structural assembly 120.

[0080] In this embodiment, the lower vehicle body 200 supports the upper vehicle body 100. The structure of the lower vehicle body 200 is not limited. For example, the lower vehicle body 200 can be a frame-like structure. The material of the lower vehicle body 200 is not limited. For example, the ductility of the material of the lower vehicle body 200 is greater than that of the material of the structural component 120, and the ductility of the material of the lower vehicle body 200 is greater than that of the material of the frame 110, thereby enabling the lower vehicle body 200 to absorb collision energy and reduce the risk of collision damage to the upper vehicle body 100. As an example, the material of the lower vehicle body 200 is aluminum alloy, the material of the frame 110 is high-strength steel, and the material of the structural component 120 is non-metallic, so that the lower vehicle body 200 absorbs collision energy, the frame 110 ensures the strength of the upper vehicle body 100, and the structural component 120 reduces the weight of the vehicle body structure. As another example, the material of the lower body 200 is aluminum alloy, the material of the frame 110 is high-strength steel, and the material of the structural component 120 is carbon fiber. At this time, the body structure can reduce the weight by about 35% compared with the existing body. At the same time, the frame 110 and the lower body 200 can also meet the five-star safety requirements of the China New Car Assessment Program (C-NCAP) crash test.

[0081] The lower body 200 and the upper body 100 can be connected by methods such as adhesive bonding, snap-fitting, riveting, and threaded connection. As an example, the vehicle body structure can also include adhesive bonding; the upper body 100 is connected to the lower body 200 via adhesive bonding. Here, the entire connection structure between the upper body 100 and the lower body 200 is adhesive bonding. This ensures the overall structural integrity of the upper body 100 and the lower body 200; for example, the upper body 100 and the lower body 200 do not require any breaks, thus guaranteeing their strength. Simultaneously, because adhesive bonding is elastic, it can also absorb collision energy, reducing the risk of collision damage to the upper body 100. The area of ​​the adhesive bonding is not limited. For example, adhesive bonding can be provided in the area between the upper body 100 and the lower body 200 within a set distance to increase the bonding area and improve the connection strength. The set distance is not limited. For example, the range of the set distance can be from 2mm to 4mm. The material of the adhesive is not limited. For example, the adhesive can be a structural adhesive. In one application, the adhesive can be a polyurethane structural adhesive. It should be noted that when the skeleton 110 is located within the structural component 120, the structural component 120 of the upper body 100 is connected to the lower body 200 via the adhesive. Of course, in other examples, the skeleton 110 and structural component 120 of the upper body 100 can also be connected to the lower body 200 via adhesive.

[0082] In this embodiment, the lower body 200 and the accommodating compartment 130 are separated, meaning there is a structural component between them. For example, the lower body 200 and the accommodating compartment 130 can be separated by the bottom wall of the upper body 100. The bottom wall of the upper body 100 may only include a portion of the structural component 120, or it may include a portion of the structural component 120 and a portion of the frame 110. As an example, as shown in FIG2, the frame 110 may include a bottom crossbeam 114 located on the bottom side of the accommodating compartment 130; the structural component 120 may include a floor component 121, which can be connected to the bottom crossbeam 114 by means of bonding, snap-fitting, riveting, threaded connection, etc. In this case, the bottom wall of the upper body 100 includes the floor component 121 and the bottom crossbeam 114; the lower body 200 and the accommodating compartment 130 are separated by the floor component 121 and the bottom crossbeam 114.

[0083] The structure of floor component 121 is not limited. For example, floor component 121 can be a single integral structure, that is, floor component 121 is a structural member, as shown in Figure 4. In this case, floor component 121 is integrally disposed along the length direction on the bottom side of the receiving compartment 130 and connected to the bottom crossbeam 114. Of course, in other examples, floor component 121 may not be a single integral structure. In this case, floor component 121 can be formed by connecting at least two structural members. In some examples, the material of floor component 121 can be carbon fiber. Here, the layup method of floor component 121 is not limited. For example, floor component 121 may include: a top fabric layup 1211, a bottom fabric layup 1212, and at least one unidirectional layup 1213. The top fabric layup 1211 is located on the side facing the receiving compartment 130; the bottom fabric layup 1212 is located on the side facing away from the receiving compartment 130 and is spaced apart from the top fabric layup 1211; at least one unidirectional layup 1213 is located between the top fabric layup 1211 and the bottom fabric layup 1212; the top fabric layup 1211 and the bottom fabric layup 1212 have interlaced fiber strips, which can improve the wear resistance of the floor component 121; at the same time, the top fabric layup 1211 and the bottom fabric layup 1212 can also ensure the overall coverage of the floor component 121; the unidirectional layup 1213 has unidirectional fiber strips, which can increase the thickness of the floor component 121, improve the strength of the floor component 121, and facilitate processing and manufacturing; at the same time, the intermediate layups all use unidirectional fiber strips, which can also achieve the best lightweight effect. As an example, as shown in Figure 5, the top fabric layup 1211 and the bottom fabric layup 1212 include fiber strips arranged alternately at ±45 degrees. There are 10 unidirectional layups 1213 between the top fabric layup 1211 and the bottom fabric layup 1212, and the 10 unidirectional layups 1213 are arranged symmetrically. From the bottom fabric layup 1212 to the symmetrical plane B, they are arranged sequentially as 0-degree unidirectional layup 1213, 90-degree unidirectional layup 1213, 0-degree unidirectional layup 1213, 90-degree unidirectional layup 1213, and 0-degree unidirectional layup 1213.

[0084] In some optional implementations of the embodiments of this application, as shown in Figures 2 and 3, the accommodating compartment 130 includes a front compartment 131 and a middle compartment 132 arranged adjacent to each other along the length direction; the frame 110 and the first part of the structural component 120 jointly define part of the space of the front compartment 131 and the middle compartment 132; the second part of the structural component 120 defines the remaining space of the middle compartment 132. By setting the frame 110 in the front area of ​​the vehicle body structure where collisions are likely to occur, the overall strength of the vehicle body structure can be guaranteed, and the safety of the accommodating compartment 130 can be guaranteed; at the same time, the overall weight of the vehicle body structure can be reduced by using the low-density structural component 120.

[0085] In this implementation, part of the space of the middle compartment 132 is located on the side closer to the front compartment 131, and the remaining space of the middle compartment 132 is located on the side farther away from the front compartment 131. That is, the frame 110 is located on the front side of the upper body 100.

[0086] In this implementation, the specific structure of the frame 110 is not limited, as long as the frame 110 is located on the front side of the upper body 100.

[0087] For example, as shown in Figure 3, the frame 110 includes: two top longitudinal beams 111, two bottom longitudinal beams 112, a top transverse beam 113, a bottom transverse beam 114, two middle vertical beams 115, and two front vertical beams 116. Two top longitudinal beams 111 are spaced apart in the width direction; two bottom longitudinal beams 112 are spaced apart in the width direction; the two bottom longitudinal beams 112 are located on the bottom sides of the two top longitudinal beams 111; top transverse beams 113 are connected to the two top longitudinal beams 111 respectively; bottom transverse beams 114 are connected to the two bottom longitudinal beams 112 respectively; two middle vertical beams 115 are spaced apart in the width direction and correspond to the positions of the bottom transverse beams 114; one of the two middle vertical beams 115 is connected to one of the top longitudinal beams 111 and one of the bottom longitudinal beams 112 respectively, and the other middle vertical beam 115 is connected to the other top longitudinal beam 111 and the other bottom longitudinal beam 112 respectively; two front vertical beams 116 are spaced apart in the width direction. The directional spacing is configured as follows: one of the two front vertical beams 116 is connected to one of the two top longitudinal beams 111 and one of the two bottom longitudinal beams 112, respectively; the other front vertical beam 116 is connected to the other top longitudinal beam 111 and the other bottom longitudinal beam 112, respectively; the two top longitudinal beams 111, the two bottom longitudinal beams 112, the top transverse beam 113, the bottom transverse beam 114, the two middle vertical beams 115, and the two front vertical beams 116 define the forward compartment 131; the two top longitudinal beams 111, the two bottom longitudinal beams 112, the top transverse beam 113, the bottom transverse beam 114, and the two middle vertical beams 115 define a portion of the space in the middle compartment 132; the structural assembly 120 defines the remaining space in the middle compartment 132. Here, the width direction refers to the direction formed between left and right.

[0088] Here, the beams can be fixedly connected by welding, snap-fitting, riveting, threaded connection, etc. Of course, the frame 110 can also be a structural component.

[0089] Here, the top crossbeam 113 can be the middle crossbeam of the roof, the bottom crossbeam 114 can be the middle crossbeam of the floor, the top longitudinal beam 111 can be the upper reinforcement of the A-pillar, the bottom longitudinal beam 112 can be the side sill reinforcement, the middle vertical beam 115 can be the B-pillar reinforcement, and the front vertical beam 116 can be the lower reinforcement of the A-pillar.

[0090] In some optional implementations of the embodiments of this application, the material of the lower body 200 has greater ductility than the material of the structural component 120, the material of the lower body 200 has greater ductility than the material of the frame 110, and the lower body 200 absorbs collision energy, thereby reducing the damage caused by the collision energy to the upper body 100.

[0091] In this implementation, the lower body 200 may include at least two beams, which can be connected by a connecting structure. The connecting structure is not limited; for example, it can be a threaded structure, a welded structure, etc. Here, the at least two beams are different structural components. Compared to a one-piece lower body 200, the lower body 200 formed by at least two beams has lower manufacturing costs. Furthermore, by replacing some beams of the lower body 200, different models of lower bodies 200 can be formed. That is, different models of lower bodies 200 can share some beams, thereby enabling the scalability and platform application of the lower body 200. The material of the beams is not limited. For example, the beams can be aluminum alloy profiles.

[0092] In this implementation, as shown in Figures 6 and 7, the lower body 200 may include a middle frame structure 210, which may include a left main longitudinal beam 211, a right main longitudinal beam 212, a front main crossbeam 213, and a rear main crossbeam 214. The right main longitudinal beam 212 is spaced apart from the left main longitudinal beam 211 in the width direction; the front main crossbeam 213 is connected to the front ends of both the left and right main longitudinal beams 211 and 212; the rear main crossbeam 214 is connected to the rear ends of both the left and right main longitudinal beams 211 and 212. A receiving space 217 is defined between the left main longitudinal beam 211, the front main crossbeam 213, the right main longitudinal beam 212, and the rear main crossbeam 214 to accommodate functional structures, thereby reducing the space required for the functional structures. As an example, the receiving space 217 is used to accommodate a battery.

[0093] The left main longitudinal beam 211, the front main crossbeam 213, the right main longitudinal beam 212, and the rear main crossbeam 214 can be different structural components, and each beam can be fixedly connected by welding, snap-fitting, riveting, threaded connection, etc. Of course, in other implementations, the left main longitudinal beam 211, the front main crossbeam 213, the right main longitudinal beam 212, and the rear main crossbeam 214 can also be a single structural component, that is, the left main longitudinal beam 211, the front main crossbeam 213, the right main longitudinal beam 212, and the rear main crossbeam 214 are an integral structure.

[0094] As shown in Figures 7 and 8, the middle frame structure 210 may further include: at least one left reinforcing beam 215 and at least one right reinforcing beam 216. The at least one left reinforcing beam 215 is connected to the left main longitudinal beam 211 and the front main crossbeam 213, respectively; the at least one right reinforcing beam 216 is connected to the right main longitudinal beam 212 and the front main crossbeam 213, respectively, to improve the strength of the middle frame structure 210. Simultaneously, placing the left reinforcing beam 215 and the right reinforcing beam 216 on the front side, which is prone to collisions, can greatly improve the overall strength of the middle frame structure 210. Here, the left reinforcing beam 215, the right reinforcing beam 216, the left main longitudinal beam 211, the front main crossbeam 213, the right main longitudinal beam 212, and the rear main crossbeam 214 can be different structural components.

[0095] In this implementation, the lower body 200 may further include a front frame structure 220; the front frame structure 220 may include a left front longitudinal beam 221, a right front longitudinal beam 222, and a front bumper crossbeam 223. The left front longitudinal beam 221 is connected to the front main crossbeam 213; the right front longitudinal beam 222 is spaced apart from the left front longitudinal beam 221 in the width direction and is connected to the front main crossbeam 213; the front bumper crossbeam 223 is connected to the front ends of the left front longitudinal beam 221 and the right front longitudinal beam 222, respectively. Here, the front main crossbeam 213, the left front longitudinal beam 221, the right front longitudinal beam 222, and the front bumper crossbeam 223 can be different structural components. Of course, the front main crossbeam 213, the left front longitudinal beam 221, the right front longitudinal beam 222, and the front bumper crossbeam 223 can also be the same structural component. Here, the lower body 200 may also include two reinforcing structures 230, which are disposed at both ends of the front main crossbeam 213 and connected to the left front longitudinal beam 221 and the right front longitudinal beam 222 respectively, so as to improve the connection strength between the lower front frame structure 220 and the middle frame structure 210; at the same time, since the front frame structure 220 is prone to collision, the reinforcing structures 230 can prevent the front frame structure 220 from collided and deformed relative to the middle frame structure 210.

[0096] The form of the reinforcing structure 230 is not limited. For example, as shown in Figures 7 and 8, the reinforcing structure 230 may include a first annular frame 231 and a second annular frame 233. Here, the annular reinforcing structure 230 can greatly improve the deformation resistance of the reinforcing structure 230, thereby greatly reducing the deformation of the front frame structure 220 when it collides with another object.

[0097] The first annular frame 231 may have a first wall and a second wall arranged adjacent to each other. The first wall is arranged along the length direction of the left front longitudinal beam 221 or the right front longitudinal beam 222, and the second wall is arranged along the length direction of the front main crossbeam 213 at the end side of the front main crossbeam 213. The first wall can greatly increase the contact area between the reinforcing structure 230 and the left front longitudinal beam 221 or the right front longitudinal beam 222, and the second wall can greatly increase the contact area between the reinforcing structure 230 and the front main crossbeam 213, thereby preventing local damage to the reinforcing structure 230 due to stress concentration. At the same time, the reinforcing structure 230 can be connected to the left front longitudinal beam 221 or the right front longitudinal beam 222 through the entire first wall, and the reinforcing structure 230 can be connected to the front main crossbeam 213 through the entire second wall, thereby greatly increasing the connection area, improving the connection strength, and further improving the strength of the undercarriage 200.

[0098] The second annular frame 233 may have a third wall and a fourth wall arranged adjacent to each other, and located on opposite sides of the first annular frame 231 on the left front longitudinal beam 221 or the right front longitudinal beam 222; the third wall is arranged along the length direction of the left front longitudinal beam 221 or the right front longitudinal beam 222, and the fourth wall is arranged along the length direction of the front main crossbeam 213 on the front main crossbeam 213. The third wall can greatly increase the contact area between the reinforcing structure 230 and the left front longitudinal beam 221 or the right front longitudinal beam 222, and the fourth wall can greatly increase the contact area between the reinforcing structure 230 and the left front longitudinal beam 221 or the right front longitudinal beam 222. The contact area with the front main crossbeam 213 can prevent local damage to the reinforcing structure 230 due to stress concentration. At the same time, the reinforcing structure 230 can be connected to the left front longitudinal beam 221 or the right front longitudinal beam 222 through the entire third wall, and the reinforcing structure 230 can be connected to the front main crossbeam 213 through the entire fourth wall, which can greatly increase the connection area, improve the connection strength, and further improve the strength of the lower body 200. Here, the reinforcing structure 230 and the beam can be fixedly connected by means of bonding, welding or other methods.

[0099] Here, a first annular frame 231 can be located on the side of the left front longitudinal beam 221 away from the right front longitudinal beam 222, and another first annular frame 231 can be located on the side of the right front longitudinal beam 222 away from the left front longitudinal beam 221. A second annular frame 233 can be located on the side of the left front longitudinal beam 221 close to the right front longitudinal beam 222, and another second annular frame 233 can be located on the side of the right front longitudinal beam 222 close to the left front longitudinal beam 221. Of course, the reinforcing structure 230 may also include only one of the first annular frame 231 and the second annular frame 233.

[0100] In some examples, the first annular frame 231 may be triangular to improve its stability. The second annular frame 233 may be quadrilateral. In one application, as shown in FIG8, the reinforcing structure 230 may further include: a first set of reinforcing ribs 232 and a second set of reinforcing ribs 234. The first set of reinforcing ribs 232 may be W-shaped and disposed within and connected to the first annular frame 231 to further improve the strength of the first annular frame 231 and prevent deformation of the first annular frame 231 during a collision; the second set of reinforcing ribs 234 may be cross-shaped and disposed within and connected to the second annular frame 233 to further improve the strength of the second annular frame 233 and prevent deformation of the second annular frame 233 during a collision. Of course, in other examples, the reinforcing structure 230 may not include at least one of the first set of reinforcing ribs 232 and the second set of reinforcing ribs 234.

[0101] In one application, structural components 120 are all made of carbon fiber composite materials. The floor panel 121, roof 122, inner side panels 123, outer side panels 124, and front wall panel 125 are connected to the frame 110 via a combination of structural adhesive bonding and riveting, forming a carbon fiber-high strength steel upper body 100. Specifically, the roof 122 has a layup pattern of [-45° / 90° / 45° / 0°]s and a thickness of 1.5 mm; the outer side panels 124 have a layup pattern of [0° / 90° / 45° / 0° / -45°]s and a thickness of 2.2 mm; the inner side panels 123 have a layup pattern of [90° / 45° / 0° / -45°]s and a thickness of 2.4 mm; and the front wall panel 125 has a layup pattern of [90° / 45° / 0° / -45°]s. The front wall panel 125 has a thickness of 2.2 mm. The floor component 121 is an integral structure with a layup pattern of [(±45°) / 0° / 90° / 0° / 90° / 0°]s. The thickness of the floor component 121 is 2.3 mm. Here, the first and last layers of the floor component 121 are made of carbon fiber fabric to ensure the overall coverage of carbon fiber. The intermediate layers are all made of unidirectional carbon fiber to give full play to the performance advantages of carbon fiber. Under the premise of meeting the performance requirements of the parts, the weight reduction rate is 48% compared with steel parts. The front frame structure 220 of the lower body 200 is constructed by connecting the left front longitudinal beam 221, the right front longitudinal beam 222, and the front bumper crossbeam 223 through metal inert gas welding (MIG) and riveting. The middle frame structure 210 is constructed by connecting the left main longitudinal beam 211, the right main longitudinal beam 212, the front main crossbeam 213, the rear main crossbeam 214, the left reinforcing beam 215, and the right reinforcing beam 216 through MIG welding. The two rear straight beams 241 and the two reinforcing crossbeams 242 of the rear frame structure 240 are constructed by connecting them through MIG welding and riveting. The crossbeams are made of 6082 aluminum profile, and the longitudinal beams and rear straight beams 241 are made of 6005A aluminum profile. The front bumper crossbeam 223 is 1.3m long, the front main crossbeam 213 is 1.5m long, the rear main crossbeam 214 is 1.1m long, and the reinforcing crossbeam 242 is 1.2m long. The left front longitudinal beam 221 and right front longitudinal beam 222 are 1.4m long, the left main longitudinal beam 211 and right main longitudinal beam 212 are 2.2m long, and the rear straight beam 241 is 1.2m long. The reinforcing structure 230 includes a first annular frame 231, a first set of reinforcing ribs 232, a second annular frame 233, and a second set of reinforcing ribs 234. The reinforcing structure 230 is made of A356 aluminum alloy by casting.The top crossbeam 113 is made of 1.8GPa hot-formed ultra-high strength steel, and its thickness is 1.8mm. The top longitudinal beam 111 is made of 2GPa ultra-high strength steel three-dimensional roll-bent parts, and its main body thickness is 1.8mm. The front vertical beam 116 and the middle vertical beam 115 are made of 1.5GPa hot-formed ultra-high strength steel, and their thicknesses are 2.0mm. The bottom longitudinal beam 112 is made of 1.5GPa ultra-high strength steel, and its thickness is 1.8mm. The bottom crossbeam 114 is a continuous integrated structure, that is, the bottom crossbeam 114 is a single structural component, and its two ends are connected to the two bottom longitudinal beams 112 respectively. The middle part of the bottom crossbeam 114 is not broken. The bottom crossbeam 114 is made of 2GPa hot-formed ultra-high strength steel, and its thickness is 1.5mm. Here, an ultra-lightweight and highly safe body structure is achieved through a variety of materials, resolving the contradiction between lightweighting and safety. While the body structure is 35% lighter, the vehicle also achieves a five-star safety rating in C-NCAP crash tests.

[0102] In another application, structural components 120 are all made of carbon fiber composite materials. The floor panel 121, roof 122, inner side panels 123, outer side panels 124, and front wall panel 125 are connected to the frame 110 via a combination of structural adhesive bonding and riveting, forming a carbon fiber-high strength steel upper body 100. Specifically, the roof 122 has a layup pattern of [45° / 0° / -45° / 90°]s and a thickness of 1.8 mm; the outer side panels 124 have a layup pattern of [0° / -45° / 90° / 45° / 0°]s and a thickness of 2.4 mm; the inner side panels 123 have a layup pattern of [0° / -45° / 90° / 45°]s and a thickness of 2.0 mm; and the front wall panel 125 has a layup pattern of [0° / -45° / 90° / 45°]. The front wall panel 125 has a thickness of 2.0 mm. The floor component 121 is an integral structure with a layup pattern of [(±45°) / 0° / 90° / 0° / 90° / 0°]s. The thickness of the floor component 121 is 2.5 mm. Here, the first and last layers of the floor component 121 are made of carbon fiber fabric to ensure the overall coverage of carbon fiber. The intermediate layers are all made of unidirectional carbon fiber to give full play to the performance advantages of carbon fiber. Under the premise of meeting the performance requirements of the parts, the weight reduction rate is 46% compared with steel parts. The front frame structure 220 of the lower body 200 is constructed by connecting the left front longitudinal beam 221, the right front longitudinal beam 222, and the front bumper crossbeam 223 through metal inert gas welding (MIG) and riveting. The middle frame structure 210 is constructed by connecting the left main longitudinal beam 211, the right main longitudinal beam 212, the front main crossbeam 213, the rear main crossbeam 214, the left reinforcing beam 215, and the right reinforcing beam 216 through MIG welding. The two rear straight beams 241 and the two reinforcing crossbeams 242 of the rear frame structure 240 are connected by MIG welding and riveting. The crossbeams are made of 6082 aluminum profile, and the longitudinal beams and rear straight beams 241 are made of 6005A aluminum profile. The front bumper crossbeam 223 is 1.0m long, the front main crossbeam 213 is 1.2m long, the rear main crossbeam 214 is 1.1m long, and the reinforcing crossbeam 242 is 0.9m long. The left front longitudinal beam 221 and right front longitudinal beam 222 are 1.0m long, the left main longitudinal beam 211 and right main longitudinal beam 212 are 1.8m long, and the rear straight beam 241 is 0.8m long. The reinforcing structure 230 includes a first annular frame 231, a first set of reinforcing ribs 232, a second annular frame 233, and a second set of reinforcing ribs 234. The reinforcing structure 230 is made of 6005 aluminum profile.The top crossbeam 113 is made of 2GPa hot-formed ultra-high strength steel, and its thickness is 1.5mm. The top longitudinal beam 111 is made of 1.8GPa ultra-high strength steel three-dimensional roll-bent parts, and its main body thickness is 2.0mm. The front vertical beam 116 and the middle vertical beam 115 are made of 1.8GPa hot-formed ultra-high strength steel, and their thicknesses are 2.0mm. The bottom longitudinal beam 112 is made of 1.0GPa ultra-high strength steel, and its thickness is 2.0mm. The bottom crossbeam 114 is a continuous integrated structure, that is, the bottom crossbeam 114 is a single structural component, and its two ends are connected to the two bottom longitudinal beams 112 respectively. The middle part of the bottom crossbeam 114 is not broken. The bottom crossbeam 114 is made of 1.8GPa hot-formed ultra-high strength steel, and its thickness is 1.8mm. Here, an ultra-lightweight and highly safe vehicle body structure was achieved through a variety of materials, resolving the contradiction between lightweighting and safety. While the vehicle body structure was reduced in weight by 32%, the driving equipment and the entire vehicle also achieved a five-star safety rating in C-NCAP crash tests.

[0103] This application also describes a driving device, which includes the vehicle body structure of this application embodiment.

[0104] The structure of the traveling device is not limited. For example, the traveling device can be a car.

[0105] The above embodiments are merely preferred embodiments provided to fully illustrate this application, and the scope of protection of this application is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on this application are all within the scope of protection of this application.

Claims

1. A vehicle body structure, characterized in that: include: The upper body includes a frame and structural components; the structural components are connected to the frame, and the structural components and the frame define a receiving compartment. The material strength of the skeleton is greater than that of the structural component, and the material density of the skeleton is greater than that of the structural component. The lower vehicle body is connected to the upper vehicle body; wherein the lower vehicle body and the accommodating compartment are separated.

2. The vehicle body structure according to claim 1, characterized in that: The frame is located within the structural assembly; and / or, the vehicle body structure further includes: Adhesive; the upper vehicle body is connected to the lower vehicle body through the adhesive.

3. The vehicle body structure according to claim 1, characterized in that: The frame defines a front door opening communicating with the accommodating compartment, the frame defines a portion of a rear door opening communicating with the accommodating compartment, and the structural component defines the remaining portion of the rear door opening.

4. The vehicle body structure according to claim 1, characterized in that: The accommodating compartment includes a forward compartment and a middle compartment arranged adjacent to each other along the length direction; The frame and the first part of the structural assembly together define part of the space of the fore cabin and the middle cabin; the second part of the structural assembly defines the remaining space of the middle cabin.

5. The vehicle body structure according to claim 4, characterized in that: The accommodating compartment also includes a rear compartment disposed adjacent to the middle compartment; the structural components define the rear compartment.

6. The vehicle body structure according to claim 4, characterized in that: The skeleton includes: Two top longitudinal beams are spaced apart in the width direction; Two bottom longitudinal beams are spaced apart in the width direction; the two bottom longitudinal beams are located on the bottom side of the two top longitudinal beams respectively; The top crossbeam is connected to the two top longitudinal beams respectively; The bottom crossbeam is connected to the two bottom longitudinal beams respectively; Two central vertical beams are spaced apart in the width direction and correspond to the positions of the bottom horizontal beams; one of the two central vertical beams is connected to one of the two top longitudinal beams and one of the two bottom longitudinal beams, and the other of the two central vertical beams is connected to the other of the two top longitudinal beams and the other of the two bottom longitudinal beams. Two front vertical beams are spaced apart in the width direction; one of the two front vertical beams is connected to one of the two top longitudinal beams and one of the two bottom longitudinal beams respectively; the other of the two front vertical beams is connected to the other of the two top longitudinal beams and the other of the two bottom longitudinal beams respectively. Two top longitudinal beams, two bottom longitudinal beams, a top transverse beam, a bottom transverse beam, two middle vertical beams, and two front vertical beams define the forward compartment; two top longitudinal beams, two bottom longitudinal beams, a top transverse beam, a bottom transverse beam, and two middle vertical beams define part of the space in the middle compartment; the structural components define the remaining space in the middle compartment.

7. The vehicle body structure according to claim 1, characterized in that: The lower body is made of aluminum alloy, the frame is made of high-strength steel, and the structural components are made of non-metallic materials or carbon fiber.

8. The vehicle body structure according to claim 1, characterized in that: The structural components include: Support components are connected to the skeleton; A cover component, connected to the skeleton and / or the support component.

9. The vehicle body structure according to claim 1, characterized in that: The frame includes: a bottom crossbeam located on the bottom side of the accommodating compartment; The structural components include: The floor component is integrally disposed on the bottom side of the accommodating compartment along its length and is connected to the bottom crossbeam.

10. The vehicle body structure according to claim 9, characterized in that: The floor component includes: The top fabric layer is located on the side facing the accommodating compartment; The bottom fabric layup is located on the side opposite to the receiving chamber and is spaced apart from the top fabric layup; At least one unidirectional layup is located between the top fabric layup and the bottom fabric layup.

11. The vehicle body structure according to any one of claims 1 to 10, characterized in that: The material of the lower body has a greater ductility than the material of the structural components, and the material of the lower body has a greater ductility than the material of the frame. And / or, The undercarriage includes at least two beams, which are connected by a connecting structure.

12. The vehicle body structure according to any one of claims 1 to 10, characterized in that: The lower body includes: a middle frame structure, the middle frame structure including: Left main longitudinal beam; The right main longitudinal beam is spaced apart from the left main longitudinal beam in the width direction; The front main crossbeam is connected to the front end of the left main longitudinal beam and the front end of the right main longitudinal beam, respectively. The rear main crossbeam is connected to the rear end of the left main longitudinal beam and the rear end of the right main longitudinal beam, respectively. A space is defined between the left main longitudinal beam, the front main crossbeam, the right main longitudinal beam, and the rear main crossbeam; the left main longitudinal beam, the front main crossbeam, the right main longitudinal beam, and the rear main crossbeam are different structural components.

13. The vehicle body structure according to claim 12, characterized in that: The middle frame structure also includes: At least one left reinforcing beam is connected to the left main longitudinal beam and the front main transverse beam, respectively; At least one right reinforcing beam is connected to the right main longitudinal beam and the front main transverse beam, respectively.

14. The vehicle body structure according to claim 12, characterized in that: The lower body further includes: a front frame structure; the front frame structure includes: The left front longitudinal beam is connected to the front main cross beam; The right front longitudinal beam is spaced apart from the left front longitudinal beam in the width direction and is connected to the front main cross beam; The front crossbeam is connected to the front end of the left front longitudinal beam and the front end of the right front longitudinal beam, respectively. The lower body also includes: Two reinforcing structures are located at both ends of the front main crossbeam and are respectively connected to the left front longitudinal beam and the right front longitudinal beam.

15. The vehicle body structure according to claim 14, characterized in that: The reinforcing structure includes: The first annular frame has a first wall and a second wall arranged adjacent to each other; the first wall is arranged along the length direction of the left front longitudinal beam or the right front longitudinal beam, and the second wall is arranged at the end side of the front main crossbeam along the length direction of the front main crossbeam. The second annular frame has a third wall and a fourth wall arranged adjacent to each other, and is located on opposite sides of the left front longitudinal beam or the right front longitudinal beam, and the third wall is arranged along the length direction of the left front longitudinal beam or the right front longitudinal beam, and the fourth wall is arranged along the length direction of the front main crossbeam on the front main crossbeam.

16. The vehicle body structure according to claim 15, characterized in that: The first annular frame is triangular in shape, and the second annular frame is quadrilateral in shape; The reinforcing structure also includes: The first set of reinforcing ribs is arranged in a W shape inside the first annular frame and connected to the first annular frame; The second set of reinforcing ribs is arranged in a cross shape inside the second annular frame and is connected to the second annular frame.

17. A traveling device, characterized in that: The vehicle body structure includes any one of claims 1 to 16.

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