Vehicle

Abstract

The embodiment of the utility model provides a vehicle which comprises a vehicle body frame, the vehicle body frame comprises a fiber thermoplastic composite part, a reinforcing structure and a thermoplastic covering layer, the vehicle body frame is provided with a first side and a second side which are arranged oppositely, the first side faces the inner side of the vehicle, the second side faces the outer side of the vehicle, and the fiber thermoplastic composite part is provided with a first cavity; the reinforcing structure is at least partially arranged in the first cavity and is used for reinforcing the strength of the fiber thermoplastic composite part; the thermoplastic covering layer at least covers at least part of the surface of the second side of the fiber thermoplastic composite part, and the thermoplastic covering layer does not contain fibers. According to the vehicle body frame, the overall rigidity and strength of the vehicle body frame are improved through the reinforcing structure; the thermoplastic covering layer additionally covers the surface of one side of the fiber thermoplastic composite part, so that exposed fibers of the fiber thermoplastic composite part can be covered, and the appearance of the vehicle body frame can be smoother and more attractive.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the technical field of vehicles, and particularly relates to a vehicle. BACKGROUND

[0002] With the development of the automobile field, part of the appearance structural member of the automobile body frame can be prepared by using non-metallic composite material, and the non-metallic composite material usually contains a certain amount of fibers, but the surface appearance degree of the non-metallic composite material containing the amount of fibers is difficult to guarantee. CONTENT

[0003] Therefore, the embodiment of the utility model expects to provide a vehicle which is beneficial to make the surface of the composite material smooth.

[0004] To achieve the above-mentioned purpose, the technical scheme of the embodiment of the utility model is implemented as follows:

[0005] The embodiment of the utility model provides a vehicle, which comprises:

[0006] The automobile body frame comprises:

[0007] The fiber thermoplastic composite member has a first side and a second side arranged oppositely, the first side faces the inner side of the vehicle, the second side faces the outer side of the vehicle, and the fiber thermoplastic composite member is provided with a first cavity;

[0008] The reinforcing structure is arranged at least partially in the first cavity and is used for reinforcing the strength of the fiber thermoplastic composite member;

[0009] The thermoplastic covering layer covers at least part of the surface of the second side of the fiber thermoplastic composite member, and the thermoplastic covering layer does not contain fibers.

[0010] On the one hand, when at least part of the automobile body frame is prepared by using the fiber composite material, the strength of the fiber composite material usually needs to be further improved, and therefore the overall rigidity and strength of the automobile body frame usually need to be improved by using the reinforcing structure; on the other hand, since the reinforcing structure is arranged in the first cavity, the reinforcing structure causes the fibers on the side of the fiber thermoplastic composite member away from the reinforcing structure to be exposed, which may affect the appearance and smoothness of the surface of the fiber thermoplastic composite member; therefore, by arranging the thermoplastic covering layer which does not contain fibers, the exposed fibers of the fiber thermoplastic composite member can be covered, and the thermoplastic covering layer is used as the surface of the outer side of the automobile body frame, which is beneficial to reduce the roughness of the surface of the outer side of the automobile body frame, so as to meet the requirements of paint coating, is beneficial to make the appearance of the automobile body frame smoother and more beautiful, and is beneficial to improve the use experience of the user. In addition, even if the fibers are not exposed, by using the thermoplastic covering layer which does not contain fibers as the covering, the appearance of the automobile body frame can be further improved to be smoother and more beautiful, and the use experience of the user can be improved.

[0011] In some embodiments, the material of the reinforcing structure is a fiber composite material, and the thermoplastic covering layer is arranged at least at a position opposite to the reinforcing structure of the fiber thermoplastic composite part. Since the reinforcing structure is also a fiber composite material, the connection between the fiber thermoplastic composite part and the reinforcing structure is usually a hot melt welding. However, when the inner reinforcing structure is hot melt welded, the fibers at the position opposite to the reinforcing structure of the fiber thermoplastic composite part may be exposed. Therefore, the thermoplastic covering layer arranged at the position opposite to the reinforcing structure can effectively shield the fibers, so that the appearance of the vehicle body frame is smoother and more beautiful, and the user experience is improved.

[0012] and / or,

[0013] The material of the reinforcing structure is a fiber composite material, the first cavity of the fiber thermoplastic composite part is open to the inner side of the vehicle, and the thermoplastic covering layer covers at least part of the surface of the reinforcing structure facing the inner side of the vehicle body frame; and / or, the thermoplastic covering layer covers at least part of the surface of the first side of the fiber thermoplastic composite part. When the reinforcing structure is a fiber composite material, the appearance of the inner side of the vehicle body frame towards the vehicle may also need to be improved. Therefore, such arrangement is also beneficial to reduce the roughness of the inner surface of the vehicle interior space, facilitate the painting and other operations of the inner surface of the vehicle interior space, and improve the visual experience of the vehicle occupants.

[0014] In some embodiments, the vehicle body frame further comprises an interior trim mounting structure arranged on at least one of the reinforcing structure and the fiber thermoplastic composite part, and the interior trim mounting structure is used for mounting an interior trim part of the vehicle. The interior trim mounting structure can transmit the load of the interior trim part of the vehicle to at least one of the reinforcing structure and the fiber thermoplastic composite part, so as to disperse the load of the interior trim part, improve the mounting stability of the interior trim part, and reduce the risk of misalignment and deformation of the interior trim part of the vehicle after long-term use.

[0015] In some embodiments, at least part of the fiber thermoplastic composite part forms a vehicle body pillar of the vehicle, the first cavity of the vehicle body pillar is provided with the reinforcing structure, the interior trim mounting structure comprises at least one seat belt accessory mounting structure, at least one of the reinforcing structure in the vehicle body pillar and the vehicle body pillar is provided with the seat belt accessory mounting structure, and the at least one seat belt accessory mounting structure is used for mounting a seat belt accessory. The seat belt accessory comprises at least one of a seat belt tensioner and a seat belt retractor. In this way, by arranging the seat belt accessory mounting structure on the reinforcing structure, the mounting of the seat belt accessory mounting structure is more stable, and the safety hazards caused by displacement and deformation of the seat belt accessory mounting structure in the case of vehicle collision are reduced.

[0016] In some embodiments, the vehicle body pillar includes at least one of an A-pillar, a B-pillar, and a C-pillar. In this way, the load borne by the seat belt accessory mounting structure can be transmitted to the A-pillar, the B-pillar, and the C-pillar, improving the mounting stability of the seat belt accessory mounting structure and facilitating the improvement of the safety of the passengers.

[0017] In some embodiments, the first cavity is open toward an inner side of the vehicle, and the interior mounting structure includes at least one interior panel mounting structure for mounting an interior panel, the interior panel being configured to cover at least a portion of the open position of the first cavity from the inner side of the vehicle. In this way, the load borne by the interior panel can be transmitted to the reinforcement structure through the interior mounting structure, facilitating the improvement of the mounting stability of the interior panel and reducing the risk of misalignment and deformation of the interior panel after long-term use of the vehicle.

[0018] In some embodiments, the interior panel mounting structure is made of a fiber composite material, and the thermoplastic covering layer covers at least a portion of the surface of the interior panel mounting structure facing the inner side of the vehicle. In this way, the roughness of the portion of the interior panel mounting structure exposed to the interior space of the vehicle is reduced, and the visual experience of the occupants is improved.

[0019] In some embodiments, the thermoplastic covering layer covers at least the relative position between the reinforcement structure and the interior panel mounting structure. In this way, the exposed fibers generated by the connection between the reinforcement structure and the interior panel mounting structure are shielded by the thermoplastic covering layer, and the appearance of the vehicle body frame is smoother and more beautiful, facilitating the improvement of the user experience.

[0020] In some embodiments, the reinforcement structure and the fiber thermoplastic composite are covered with the thermoplastic covering layer at least in the areas other than the areas where the interior panel mounting structure is arranged. In this way, the areas of the reinforcement structure and the fiber thermoplastic composite directly forming the surface of the interior space are made smoother and more even, and the visual experience of the occupants is improved.

[0021] In some embodiments, at least part of the fiber thermoplastic composite forms a body pillar of the vehicle, the body frame further comprises a door connecting structure, the first cavity of the body pillar is provided with a reinforcing structure, and at least one door connecting structure is used to connect at least one of a door hinge, a door lock, and a door opening limiter; at least one of the reinforcing structure in the body pillar and the body pillar is provided with the door connecting structure, so that the installation of the door connecting structure is more stable, the risk of dislocation of the door connecting structure after the vehicle is in a collision is reduced, and the opening function of the door is realized to facilitate the escape of passengers. Alternatively, the door connecting structure is arranged between the reinforcing structure in the body pillar and the body pillar. In this way, the load borne by the door connecting structure is transmitted to the reinforcing structure and the fiber thermoplastic composite respectively, so that the installation of the door connecting structure is more stable, the risk of dislocation of the door connecting structure after the vehicle is in a collision is reduced, and the opening function of the door is realized to facilitate the escape of passengers.

[0022] In some embodiments, the body pillar comprises at least one of an A-pillar, a B-pillar, and a C-pillar. In this way, the load of the door connecting structure can be transmitted to the A-pillar, the B-pillar, and the C-pillar, thereby improving the installation stability of the door connecting structure.

[0023] In some embodiments, the thermoplastic cover layer further covers at least part of the area outside the area where the reinforcing structure is provided with the door connecting structure. In this way, the surface of the reinforcing structure exposed to the outside during the opening and closing of the door is smoother, which improves the passengers' experience.

[0024] In some embodiments, the type of thermoplastic material in the fiber thermoplastic composite is the same as the type of thermoplastic material of the thermoplastic cover layer. In this way, by using the same type of material, the production process is simplified and the production cost is reduced; at the same time, by using the same material, the connection between the fiber thermoplastic composite and the thermoplastic cover layer is more stable, the probability of separation and peeling of the thermoplastic cover layer from the fiber thermoplastic composite after long-term use of the vehicle is reduced, and the service life is prolonged.

[0025] In some embodiments, the thermoplastic material in the fiber thermoplastic composite is one or more of polypropylene and polyamide, so that the fiber thermoplastic composite can better adapt to various working conditions during vehicle operation, and the service life of the fiber thermoplastic composite is prolonged.

[0026] In some embodiments, the type of thermoplastic material of the thermoplastic cover layer is one or more of polypropylene and polyamide. In this way, the thermoplastic cover layer can better adapt to various working conditions during vehicle operation, the risk of peeling of the thermoplastic cover layer from the fiber thermoplastic composite due to friction and collision with external objects is reduced, and the service life of the thermoplastic cover layer is prolonged.

[0027] In some embodiments, the fiber thermoplastic composite part comprises a plurality of layers of continuous fiber composite material, each layer of continuous fiber composite material comprising continuous fibers and a first thermoplastic resin matrix, the first thermoplastic resin matrix connecting the continuous fibers. The composite material formed by the continuous fibers and the first thermoplastic resin matrix has high strength, high rigidity and high toughness, which helps to improve the structural strength and structural rigidity of the fiber thermoplastic composite part, and is conducive to reducing the probability of damage to the outer surface of the vehicle.

[0028] In some embodiments, the continuous fibers are continuous glass fibers. Continuous glass fibers have high strength and good resilience. The use of continuous glass fibers in combination with the first thermoplastic resin matrix helps to improve the tensile strength of the fiber thermoplastic composite part, and also helps to improve the service life of the fiber thermoplastic composite part.

[0029] In some embodiments, the weight fraction of the continuous fibers is 60-80, the weight fraction of the first thermoplastic resin matrix is 20-40, and the sum of the weight fraction of the continuous fibers and the weight fraction of the first thermoplastic resin matrix is 100. By controlling the content of the continuous fibers and the first thermoplastic resin matrix within a reasonable range, it is possible to reduce the probability of the continuous fibers being exposed from the resin matrix due to excessive content of continuous fibers and low content of resin matrix, and to avoid the case of insufficient strength of the composite material due to excessive content of resin matrix and low content of continuous fibers, i.e. to make the content of continuous fibers and the content of the first thermoplastic resin matrix reach a relatively balanced state, so that the performance of the composite material meets the mechanical performance requirements of the fiber thermoplastic composite part.

[0030] In some embodiments, the layer of continuous fiber composite material comprises 1-5 parts by weight of the first compatibilizer. The first compatibilizer can improve the interfacial adhesion between the continuous fibers and the first thermoplastic resin matrix, and improve the mechanical properties of the composite material.

[0031] In some embodiments, the layer of continuous fiber composite material comprises 0.2-0.6 parts by weight of the first antioxidant. The first antioxidant can reduce the possibility of degradation of the composite material due to high temperature oxidation during processing, and prolong the service life of the composite material.

[0032] In some embodiments, the water absorption rate of each layer of continuous fiber composite material is not higher than 0.3%. By controlling the water absorption rate of the single layer of continuous fiber composite material within this range, the water absorption rate of the fiber thermoplastic composite part is in a lower range, thereby reducing the deformation of the fiber thermoplastic composite part caused by excessive absorption of water in the external environment during use of the vehicle.

[0033] In some embodiments, the thickness of each continuous fiber composite layer is in the range of 0.2mm to 0.3mm. In this way, on the one hand, the risk of the thickness of the single layer of continuous fiber composite layer being too low to cause insufficient structural strength and structural stiffness of the single layer of continuous fiber composite is reduced, and on the other hand, the risk of the thickness of the continuous fiber composite layer being too large to cause the thickness of the fiber thermoplastic composite part to be too high when the multiple layers of continuous fiber composite layup is laid up, and the risk of the overall aesthetic performance of the vehicle body frame being affected or interfering with the installation of other parts of the vehicle is reduced.

[0034] In some embodiments, the thickness of the thermoplastic cover layer is not less than the thickness of the continuous fiber composite layer it covers. In this way, it is beneficial to reduce the difficulty of the fibers protruding from the surface of the continuous fiber composite layer to further penetrate the thermoplastic cover layer, reduce the probability of the fibers protruding from the surface of the thermoplastic cover layer, and reduce the roughness of the surface of the thermoplastic cover layer.

[0035] In some embodiments, the dimension of the thermoplastic cover layer along the stacking direction of the continuous fiber composite layer is in the range of 0.3mm to 0.5mm. In this way, it is beneficial to reduce the probability of the exposed fibers in the continuous fiber composite layer penetrating the thermoplastic cover layer, and reduce the roughness of the surface of the vehicle body frame.

[0036] In some embodiments, the continuous fiber composite layers are stacked, and the thermoplastic cover layer covers at least one side of the outermost continuous fiber composite layer away from the other continuous fiber composite layers. In this way, by utilizing the inhibitory effect of the continuous fiber composite layer on the exposed fibers of the adjacent continuous fiber composite layer, only one or two layers of thermoplastic cover layer are needed in the vehicle body frame, which is beneficial to simplify the manufacturing process of the vehicle body frame and also beneficial to realize the lightweight of the vehicle body frame.

[0037] In some embodiments, the reinforcing structure comprises 30-65 parts by weight of long glass fibers and 35-75 parts by weight of a second thermoplastic resin matrix, and the sum of the parts by weight of the long glass fibers and the second thermoplastic resin matrix is 100. The composite material formed by the combination of the long glass fibers and the second thermoplastic resin matrix combines the high strength and high modulus characteristics of the long glass fibers and the good processability and recyclability of the thermoplastic resin, which helps to improve the elastic modulus, tensile strength and elongation at break of the reinforcing structure, and the second thermoplastic resin matrix is easy to form, such as injection molding, extrusion molding, compression molding, etc.

[0038] In some embodiments, the reinforcing structure further comprises 1-2 parts by weight of a second compatibilizer. The second compatibilizer is used to improve the interfacial adhesion between the resin matrix and the long glass fibers, and improve the mechanical properties of the composite material.

[0039] In some embodiments, the reinforcing structure further comprises 0.1-0.4 parts by weight of a second antioxidant. The second antioxidant can prevent or delay the oxidation degradation of the material, reduce the possibility of degradation of the composite material due to high temperature oxidation during processing, and prolong the service life of the composite material.

[0040] In some embodiments, the reinforcing structure comprises a plurality of reinforcing ribs, and the reinforcing ribs are injection molded on the surface of the fiber thermoplastic composite. By using the injection molding process, the reinforcing ribs and the fiber thermoplastic composite form an integrated structure, without the need to assemble the reinforcing ribs and the fiber thermoplastic composite, simplifying the manufacturing process of the vehicle body frame; at the same time, by manufacturing the injection mold into different shapes, it is beneficial to optimize the shape and size of the reinforcing ribs according to the main stress distribution of the fiber thermoplastic composite, which is beneficial to improve the stiffness and strength of the fiber thermoplastic composite while reducing excessive redundancy of the structure.

[0041] In some embodiments, the reinforcing structure comprises a reinforcing tube, and the reinforcing tube is a pultruded integrated fiber composite tubular structure. In this way, the reinforcing tube forms a cavity inside it, which is beneficial to further improve the stiffness and strength of the reinforcing tube; the integrated structure is beneficial to improve the production efficiency of the reinforcing structure and reduce the weight of the reinforcing structure.

[0042] In some embodiments, the vehicle body frame further comprises a paint layer, and the paint layer is coated on the side surface of the thermoplastic cover layer away from the fiber thermoplastic composite. In this way, the paint is sprayed on the thermoplastic cover layer, which is beneficial to improve the adhesion effect of the paint and make the appearance of the vehicle more beautiful.

[0043] In some embodiments, the vehicle further comprises a chassis, and the vehicle body frame is arranged on the chassis to jointly form a passenger compartment of the vehicle. The chassis comprises a battery device, and the shell of the battery device forms at least part of the bottom wall of the passenger compartment. In this way, it is beneficial to make the structure of the vehicle more compact and improve the utilization rate of the internal space of the vehicle.

[0044] In some embodiments, the vehicle further comprises a chassis, and the vehicle body frame is arranged on the chassis and above the chassis. The vehicle body frame and the chassis are detachably connected. In this way, it is beneficial to make the vehicle body frame of different shapes and sizes adapt to the chassis of different performance and size, thereby reducing the development cost of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is an explosion schematic diagram of the vehicle in the first embodiment of the utility model;

[0046] Figure 2 It is an explosion schematic of the vehicle body frame in the second embodiment of the utility model;

[0047] Figure 3It is the schematic view of the vehicle body frame in the third embodiment of the present utility model, and the view angle is from the second side to the first side.

[0048] Figure 4 It is the schematic view of the vehicle body frame in the third embodiment of the present utility model, and the view angle is from the second side to the first side. Figure 1

[0049] Figure 5 It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model.

[0050] Figure 6 It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 5

[0051] Figure 7 It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 4

[0052] Figure 8 It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 4

[0053] Figure 9 It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 4

[0054] Figure 10 It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 4

[0055] It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 11

[0056] It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 12

[0057] It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 13

[0058] It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model. Figure 14

[0059] It is the sectional view of the fiber thermoplastic composite, the thermoplastic covering layer and the paint layer in an embodiment of the present utility model.

[0060] ​​​​​​10, vehicle body frame; 10a, passenger compartment; 11, fiber thermoplastic composite; 11a, first cavity; 111, continuous fiber composite layer; 1111, continuous fiber; 1112, first thermoplastic resin matrix; 12, reinforcement structure; 121, reinforcement rib; 122, reinforcement tube; 13, thermoplastic cover layer; 14, vehicle body pillar; 141, A-pillar; 142, B-pillar; 143, C-pillar; 15, interior trim mounting structure; 151, seat belt accessory mounting structure; 152, seat belt tensioner; 153, seat belt retractor; 154, interior trim panel mounting structure; 155, interior trim panel; 16, door connecting structure; 161, door hinge; 20, engine compartment cover panel; 21, front fender; 22, door outer skin; 30, paint layer; 40, chassis; 41, battery device. DETAILED DESCRIPTION

[0061] It should be noted that the embodiments and technical features in the embodiments in the present application can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present application, and should not be regarded as an improper limitation of the present application.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the description and the above drawings of the specification of the present application and the terms "comprising" and "having", as well as any variations thereof, are intended to cover non-exclusive inclusion.

[0063] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0064] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0065] In the description of the embodiments of the utility model, the term "and / or" is only a kind of description of the association relationship of associated object, it can exist three kinds of relations, for example, A and / or B, it can indicate: it exists A alone, A and B exist simultaneously, B exists alone these three cases.In addition, the character " / " in this paper, generally indicates that the direction of the arrow x1 is "first side", the direction of the arrow x2 is "second side", the direction of the arrow Y is "the stacking direction of continuous fiber composite material layer", the direction of the arrow Z is "the height direction of vehicle".

[0066] In the description of the embodiments of the utility model, for easy to explain, in the drawing of the specification, the direction of the arrow x1 is "first side", the direction of the arrow x2 is "second side", the direction of the arrow Y is "the stacking direction of continuous fiber composite material layer", the direction of the arrow Z is "the height direction of vehicle".

[0067] In the description of the embodiments of the utility model, unless otherwise explicitly specified and limited, technical terms "installation" "connection" "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the embodiments of the utility model can be understood according to specific circumstances.

[0068] In the description of the embodiments of the utility model, unless otherwise explicitly specified and limited, technical term "contact" should be understood broadly, it can be direct contact, or contact through intermediate medium layer, it can be contact between two objects, which basically has no interaction force, or contact between two objects, which has interaction force.

[0069] Next, the embodiments of the utility model are described in detail.

[0070] In the related art, the body frame made of fiber composite material needs to form the structure piece of required shape by extrusion forming through the mold of specific shape to the plate made of fiber composite material.In the process of mold extruding the plate made of fiber composite material, due to the flow difference between fiber and matrix material, the size of their adhesive force and the fact that fiber cannot be completely covered by matrix material, part of fiber bends and slips under the action of mold extrusion force, so that this part of fiber protrudes from other fibers, causing the problem of rough surface of the formed structure piece, which is not conducive to subsequent paint spraying, and also has adverse effect on user's perception.

[0071] On this basis, the utility model discloses a kind of vehicles, the vehicle includes vehicle body frame, the side surface of fiber thermoplastic composite in vehicle body frame is covered with thermoplastic covering layer, thermoplastic covering layer covers the fiber projecting in fiber thermoplastic composite and forms the partial outer surface of vehicle body frame, to facilitate the surface flatness of vehicle body frame is improved, facilitate as the appearance piece of vehicle.

[0072] In some embodiments, referring to Figure 1 And Figure 2 Vehicle body frame 10 usually also includes load-bearing structure and appearance structure, usually load-bearing structure includes bumper, anti-collision beam, A column 141, B column 142, C column 143, rocker beam, cross beam, longitudinal beam and the like structure;Appearance structure includes at least one of engine compartment cover plate 20, front bumper, front fender 21, door outer shell 22, rear fender, rear bumper and roof panel, wherein door outer shell 22 includes at least one of front side door outer shell, rear side door outer shell and tail door outer shell.Fiber thermoplastic composite 11 and thermoplastic covering layer 13 can be used to form at least part of the appearance structure of the vehicle together, and can also be used to form at least part of the load-bearing structure.

[0073] In some embodiments, referring to Figure 12 The vehicle also includes chassis 40, and vehicle body frame 10 is arranged on chassis 40 to jointly enclose passenger compartment 10a of the vehicle.Passenger compartment 10a is used for personnel to ride.

[0074] In some embodiments, chassis 40 includes battery device 41, and the shell of battery device 41 forms at least part of the bottom wall of passenger compartment 10a.

[0075] That is, the shell of battery device 41 forms at least part of the floor of passenger compartment 10a.

[0076] In this way, it is beneficial to make the structure of the vehicle more compact and improve the utilization rate of the internal space of the vehicle.

[0077] In some embodiments, vehicle body frame 10 and chassis 40 are welded together.

[0078] In other embodiments, referring to Figure 1 Vehicle body frame 10 is located above chassis 40, and vehicle body frame 10 is detachably connected with chassis 40.

[0079] In these embodiments, chassis 40 is a skateboard chassis integrated with a three-electricity system.Chassis 40 is thus arranged to realize the separation and decoupling of vehicle body frame 10 and chassis 40, so that vehicle body frame 10 can be replaced according to requirements, shorten the development cycle and reduce costs.In other words, it also makes the integration degree of chassis 40 improved, which can be adapted to various vehicle models.

[0080] Specifically, referring to Figure 1、 Figure 5 and Figure 6 The embodiment of the present application provides a vehicle, which comprises a vehicle body frame 10. The vehicle body frame 10 comprises a fiber thermoplastic composite part 11, a reinforcing structure 12 and a thermoplastic covering layer 13.

[0081] The fiber thermoplastic composite part 11 has a first side and a second side arranged oppositely, the first side is directed to the inner side of the vehicle, and the second side is directed to the outer side of the vehicle. The fiber thermoplastic composite part 11 is provided with a first cavity 11a.

[0082] At least part of the reinforcing structure 12 is arranged in the first cavity, and is used for reinforcing the strength of the fiber thermoplastic composite part 11.

[0083] The thermoplastic covering layer 13 covers at least part of the surface of the second side of the fiber thermoplastic composite part, and the thermoplastic covering layer 13 does not contain fibers.

[0084] The fiber thermoplastic composite part 11 refers to a plate-shaped structure part which is manufactured by using a fiber composite material with thermoplasticity through heating, molding and the like.

[0085] The vehicle body frame 10 is made of the fiber composite material, which is beneficial to one-time forming of the overall structure, and is beneficial to reducing the number of parts of the vehicle body frame 10 compared with the manufacturing mode of splicing multiple metal sheet parts in the prior art. The type of material has low density compared with metal material, and is beneficial to overall light weight of the vehicle body frame 10. Compared with metal material, the fiber composite material is more resistant to oxidation and corrosion, and is beneficial to omitting a surface treatment process in the manufacturing process.

[0086] By means of the first cavity 11a, the overall structural strength and rigidity of the fiber thermoplastic composite part 11 are improved.

[0087] The reinforcing structure 12 is used for reinforcing the strength and rigidity of the fiber thermoplastic composite part 11, and is beneficial to reducing the deformation amplitude of the fiber thermoplastic composite part 11 due to external stress in use, and is beneficial to improving the service life of the fiber thermoplastic composite part 11.

[0088] It can be understood that the vehicle body frame 10 can be used to form an appearance part of the vehicle. The appearance part of the vehicle refers to a structure which is directly exposed to the outside environment and can be directly observed by a user in a normal use state of the vehicle.

[0089] The thermoplastic covering layer 13 is made of a thermoplastic material, which is beneficial to flowing to different positions of the fiber thermoplastic composite part 11 in a liquid manner in a heated and molten state, and is beneficial to adapting to the covering requirement of the complex shape of the fiber thermoplastic composite part 11. The thermoplastic covering layer 13 is also beneficial to completely covering the entire surface of the second side of the fiber thermoplastic composite part 11, and reducing the probability of an uncovered area.

[0090] The thermoplastic covering layer 13 covers the surface of the second side of the fiber thermoplastic composite 11, so that the thermoplastic covering layer 13 can cover the fibers of the fiber thermoplastic composite 11 that protrude out of the surface of the second side thereof; and the thermoplastic covering layer 13 itself does not contain fibers, and itself does not have the problem of partial fibers exposed on the surface thereof during the manufacturing process. Therefore, the fibers that protrude out of the fiber thermoplastic composite 11 are difficult to protrude out to the surface of the second side of the thermoplastic covering.

[0091] In the vehicle in the embodiments, on the one hand, when at least part of the vehicle body frame 10 is made of a fiber composite material, the fiber composite material generally needs to be further improved in strength, and the overall rigidity and strength of the vehicle body frame 10 are improved by the reinforcing structure 12; on the other hand, since the first cavity 11a is provided with the reinforcing structure, the reinforcing structure 12 causes the fibers on the side of the fiber thermoplastic composite 11 away from the reinforcing structure 12 to have the risk of being exposed, which can affect the appearance and smoothness of the surface of the fiber thermoplastic composite 11; therefore, by providing the thermoplastic covering layer 13 that does not contain fibers, the exposed fibers of the fiber thermoplastic composite 11 are covered, and the thermoplastic covering layer 13 is used as the surface of the outer side of the vehicle body frame 10, which is beneficial to reducing the roughness of the surface of the outer side of the vehicle body frame 10, so as to meet the requirements of paint coating, and is beneficial to making the appearance of the vehicle body frame 10 smoother and more beautiful, and is beneficial to improving the user experience. In addition, even if the fibers do not have the problem of being exposed, by using the thermoplastic covering layer 13 that does not contain fibers as the covering, the appearance of the vehicle body frame 10 can be further improved to be smoother and more beautiful, and the user experience can be improved.

[0092] It can be understood that part of the structural members in the vehicle can be used as the appearance member of the vehicle, and can also be used as the inner surface of the passenger compartment 10a for the passengers to sit on, so as to improve the compactness of the vehicle structure and improve the utilization rate of the interior space of the vehicle.

[0093] In some embodiments, the material of the reinforcing structure 12 is a fiber composite material, which is beneficial to the lightweight of the reinforcing structure 12.

[0094] In some embodiments in which the material of the reinforcing structure 12 is a fiber composite material, referring to Figure 7 , the thermoplastic covering layer 13 at least covers the position opposite to the fiber thermoplastic composite 11 and the reinforcing structure 12.

[0095] Since the reinforcing structure 12 is also a fiber composite material, the connection mode of the fiber thermoplastic composite 11 and the reinforcing structure 12 is generally hot melt welding, and when the inner side reinforcing structure 12 is hot melt welded, the fibers at the position opposite to the fiber thermoplastic composite 11 and the reinforcing structure 12 can be exposed.

[0096] Therefore, the thermoplastic covering layer 13 is arranged at a position opposite to the reinforcing structure 12, which can effectively shield the fibers, so that the appearance of the vehicle body frame 10 is smoother and more beautiful, and the user experience is improved.

[0097] In some embodiments in which the material of the reinforcing structure 12 is fiber composite material, referring to Figure 7 , the first cavity 11a is open towards the inner side of the vehicle, and the thermoplastic covering layer 13 covers at least part of the surface of the reinforcing structure 12 towards the inner side of the vehicle body frame 10.

[0098] It can be understood that at least part of the surface of the reinforcing structure 12 towards the inner side of the vehicle body frame 10 can be used to form part of the surface of the interior space of the vehicle.

[0099] When the reinforcing structure 12 is fiber composite material, the appearance of the vehicle body frame 10 towards the inner side of the vehicle can also need to be improved, and thus such arrangement is beneficial to reduce the roughness of the inner surface of the interior space of the vehicle, facilitate the painting and other operations on the inner surface of the interior space of the vehicle, and improve the visual experience of the passengers of the vehicle.

[0100] In some embodiments, referring to Figure 7 , the thermoplastic covering layer 13 covers at least part of the surface of the first side of the fiber thermoplastic composite part 11.

[0101] That is, a part of the thermoplastic covering layer 13 can be used to form part of the surface of the interior space of the vehicle.

[0102] In this way, it is beneficial to reduce the roughness of the inner surface of the interior space of the vehicle, facilitate the painting and other operations on the inner surface of the interior space of the vehicle, and improve the visual experience of the passengers of the vehicle.

[0103] It should be noted that the interior space of the vehicle includes the space that can be contacted by the passengers of the vehicle during use, such as the passenger compartment 10a, the trunk, the front trunk, etc.

[0104] In some embodiments, referring to Figure 7 , Figure 8 and Figure 9 , the vehicle body frame 10 further comprises an interior trim mounting structure 15, which is arranged on at least one of the reinforcing structure 12 and the fiber thermoplastic composite part 11, and is used to mount the interior trim part of the vehicle.

[0105] The interior trim part of the vehicle refers to a structure part with specific functional or decorative structure in the interior space of the vehicle, such as the passenger compartment 10a, the trunk, the front trunk, etc.

[0106] The interior trim mounting structure 15 provides a mounting position for the interior trim part of the vehicle.

[0107] The interior mounting structure 15 can transmit the load of the interior part of the vehicle to at least one of the reinforcing structure 12 and the fiber thermoplastic composite 11 to disperse the load of the interior part, improve the mounting stability of the interior part, and reduce the risk of misalignment or deformation of the interior part of the vehicle after long-term use.

[0108] In some embodiments, the interior mounting structure 15 is arranged on the reinforcing structure 12 but not on the fiber thermoplastic composite 11, which reduces the probability of surface quality defects such as local indentation or deformation of the fiber thermoplastic composite 11 due to the load of the interior part of the vehicle, and reduces the adverse perception of the user of the vehicle.

[0109] The specific form of the interior mounting structure 15 is not limited.

[0110] In some embodiments, referring to Figure 7 and Figure 8 the interior mounting structure 15 includes at least one seat belt accessory mounting structure 151 for mounting a seat belt accessory, and the seat belt accessory includes at least one of a seat belt height adjuster 152 and a seat belt retractor 153.

[0111] The seat belt height adjuster 152 is used to adjust the height of the seat belt to meet the needs of different passengers.

[0112] The seat belt retractor 153 is used to tighten the seat belt to facilitate the fixation of the passenger to the seat in the event of a vehicle collision.

[0113] In this way, by arranging the seat belt accessory mounting structure 151 on the reinforcing structure 12, the mounting of the seat belt accessory mounting structure 151 is more stable, and the safety hazards to the passenger caused by displacement or deformation of the seat belt accessory mounting structure 151 in the event of a vehicle collision are reduced.

[0114] In some embodiments, referring to Figure 7 and Figure 8 at least part of the fiber thermoplastic composite 11 forms a vehicle body pillar 14 of the vehicle, the first cavity 11a of the vehicle body pillar 14 is provided with the reinforcing structure 12, and at least one of the reinforcing structure 12 and the vehicle body pillar 14 in the vehicle body pillar 14 is provided with the seat belt accessory mounting structure 151.

[0115] The vehicle body pillar 14 refers to a columnar structure that extends substantially in the height direction of the vehicle.

[0116] The seat belt accessory mounting structure 151 is arranged on at least one of the reinforcing structure 12 and the vehicle body pillar 14 in the vehicle body pillar 14, which is conducive to the use of the seat belt by the passenger of the vehicle.

[0117] In some embodiments in which the vehicle body pillar 14 is provided with the seat belt accessory mounting structure 151, the vehicle body pillar 14 comprises at least one of an A-pillar 141, a B-pillar 142, and a C-pillar 143.

[0118] The A-pillar 141 refers to a connecting pillar located at the front of the vehicle and connecting the roof and the front cabin.

[0119] The C-pillar 143 refers to a connecting pillar located at the rear of the vehicle and connecting the roof and the rear cabin.

[0120] It can be understood that the A-pillar 141, the B-pillar 142, and the C-pillar 143 are all parts with high rigidity and strength in the entire vehicle.

[0121] In this way, the load borne by the seat belt accessory mounting structure 151 can be transmitted to the A-pillar 141, the B-pillar 142, and the C-pillar 143, improving the mounting stability of the seat belt accessory mounting structure 151 and facilitating the improvement of the use safety of passengers.

[0122] In some embodiments, referring to Figure 9 the first cavity 11a is open toward the inner side of the vehicle, and the interior mounting structure 15 comprises at least one interior panel mounting structure 154, the interior panel mounting structure 154 being configured to mount an interior panel 155, the interior panel 155 being configured to cover at least part of the open position of the first cavity 11a from the inner side of the vehicle.

[0123] The interior panel 155 is configured to form an appearance surface of the interior space of the vehicle cabin, can provide mounting positions for other devices of the vehicle, and can also be used to improve the aesthetics of the interior of the vehicle.

[0124] In this way, the load borne by the interior panel 155 can be transmitted to the reinforcing structure 12 through the interior mounting structure 15, which is conducive to improving the mounting stability of the interior panel 155 and reducing the risk of misalignment and deformation of the interior panel 155 after long-term use of the vehicle.

[0125] The reinforcing structure 12 is located in a space jointly formed by the fiber thermoplastic composite 11 and the interior panel 155, so as to shield the reinforcing structure 12 and improve the visual perception of passengers.

[0126] The interior panel 155 can be used to form the inner panel of the door, the center console, the inner panel of the roof, and the like of the vehicle.

[0127] It can be understood that in some embodiments, the interior panel 155 can cover part of the surface of the interior panel mounting structure 154 toward the inner side of the vehicle; in some embodiments, the interior panel mounting structure 154 is at least partially directly exposed to the interior space of the vehicle, that is, at least part of the interior panel mounting structure 154 will not be covered by the interior panel 155.

[0128] In some embodiments, the material of the interior panel mounting structure 154 is a fiber composite material, so as to facilitate the lightweight of the vehicle body frame 10.

[0129] In some embodiments in which the material of the interior panel mounting structure 154 is a fiber composite material, referring to Figure 9 , the thermoplastic covering layer 13 covers at least a portion of the surface of the interior panel mounting structure 154 facing the interior side of the vehicle.

[0130] In this way, the roughness of the portion of the interior panel mounting structure 154 exposed to the interior space of the vehicle is reduced, and the passenger’s visual experience is improved.

[0131] In some embodiments in which the material of the interior panel mounting structure 154 is a fiber composite material, the thermoplastic covering layer 13 covers at least one of the reinforcing structure 12 and the fiber thermoplastic composite member 11 at a position opposite to the interior panel mounting structure 154.

[0132] In this way, the exposed fibers generated at the connection position of the reinforcing structure 12 or the fiber thermoplastic composite member 11 and the interior panel mounting structure 154 are shielded by the thermoplastic covering layer 13, and the appearance of the vehicle body frame 10 is smoother and more beautiful, which improves the user’s experience.

[0133] It can be understood that, in some embodiments, the reinforcing structure 12 can form at least a portion of the surface of the interior space, so as to provide more space in the interior space of the vehicle for forming the passenger compartment 10a, the trunk, the front trunk, etc.

[0134] In some embodiments, referring to Figure 9 , the reinforcing structure 12 and the fiber thermoplastic composite member 11 are further covered by the thermoplastic covering layer 13 at least in a portion of the area other than the area where the interior panel mounting structure 154 is arranged.

[0135] In this way, the area of the reinforcing structure 12 and the fiber thermoplastic composite member 11 directly forming the surface of the interior space is smoother and more even, which improves the passenger’s visual experience.

[0136] In some embodiments, referring to Figure 10 and Figure 11 , at least a portion of the fiber thermoplastic composite member 11 forms a vehicle body pillar 14 of the vehicle, the vehicle body frame 10 further comprises a door connecting structure 16, the first cavity 11a of the vehicle body pillar 14 is provided with the reinforcing structure 12, and at least one door connecting structure 16 is used to connect at least one of a door hinge 161, a door lock, and a door opening limiter.

[0137] The door hinge 161 is used to connect the door and the vehicle body frame 10, and enables the door and the vehicle body frame 10 to relatively rotate to achieve the opening and closing of the door. The door hinge 161 is used to connect the door and the vehicle body frame 10, and enables the door and the vehicle body frame 10 to relatively rotate to achieve the opening and closing of the door.

[0138] A door lock for locking a position of a door relative to a body frame 10 when the door is in a closed state.

[0139] A door opening limiter for limiting a relative rotation angle between the door and the body frame 10.

[0140] In some embodiments, referring to Figure 10 At least one of the reinforcing structure 12 of the body pillar 14 and the body pillar 14 is provided with the door connecting structure 16.

[0141] In this way, it is beneficial to make the installation of the door connecting structure 16 more stable, reduce the risk of dislocation of the door connecting structure 16 after a collision of the vehicle, and facilitate the opening of the door for the escape of passengers.

[0142] In some embodiments, referring to Figure 11 The reinforcing structure 12 of the body pillar 14 and the fiber thermoplastic composite 11 of the body pillar 14 are provided with the door connecting structure 16.

[0143] In this way, it is beneficial to make the load borne by the door connecting structure 16 transmitted to the reinforcing structure 12 and the fiber thermoplastic composite 11 respectively, thereby making the installation of the door connecting structure 16 more stable, reducing the risk of dislocation of the door connecting structure 16 after a collision of the vehicle, and facilitating the opening of the door for the escape of passengers.

[0144] In some embodiments in which the body pillar 14 is provided with the door connecting structure 16, the body pillar 14 includes at least one of an A-pillar 141, a B-pillar 142, and a C-pillar 143.

[0145] In this way, the load borne by the door connecting structure 16 can be transmitted to the A-pillar 141, the B-pillar 142, and the C-pillar 143, thereby improving the installation stability of the door connecting structure 16.

[0146] It can be understood that at least part of the reinforcing structure 12 is exposed to the outside during the movement of the door, so that the door can move relative to the body frame 10.

[0147] In some embodiments, referring to Figure 11 The thermoplastic covering layer 13 also covers at least part of the area outside the area of the reinforcing structure 12 provided with the door connecting structure 16.

[0148] In this way, it is beneficial to make the surface of the reinforcing structure 12 exposed to the outside during the opening and closing of the door more smooth and flat, thereby improving the visual experience of passengers.

[0149] In some embodiments, the door connecting structure 16 is made of metal material, so as to have certain structural strength, and facilitate paint spraying, so as to improve the user's visual perception.

[0150] In some embodiments, the type of thermoplastic material in the fiber thermoplastic composite 11 is the same as the type of thermoplastic material in the thermoplastic cover layer 13.

[0151] In this way, by using the same type of material, it is beneficial to simplify the production process and reduce the production cost; at the same time, by using the same material, it is beneficial to make the connection of the fiber thermoplastic composite 11 and the thermoplastic cover layer 13 more stable, reduce the probability of separation and peeling of the thermoplastic cover layer 13 from the fiber thermoplastic composite 11 after long-term use of the vehicle, and prolong the service life.

[0152] In some embodiments, the thermoplastic material in the fiber thermoplastic composite 11 is one or more of polypropylene and polyamide.

[0153] Polypropylene (PP) is a thermoplastic plastic. It has high impact resistance, strong and tough mechanical properties, and can resist various organic solvents and acid and alkali corrosion.

[0154] Polyamide (polyamide, PA) is commonly known as nylon, which has good wear resistance and fatigue resistance.

[0155] In this way, it is beneficial to make the fiber thermoplastic composite 11 better adapt to various working conditions during vehicle operation, and prolong the service life of the fiber thermoplastic composite 11.

[0156] It can be understood that the fiber thermoplastic composite 11 can be made of only polypropylene material; can be made of only polyamide; and can be made of a material formed by mixing polypropylene and polyamide.

[0157] In some embodiments, the type of thermoplastic material of the thermoplastic cover layer 13 is one or more of polypropylene and polyamide.

[0158] In this way, it is beneficial to make the thermoplastic cover layer 13 better adapt to various working conditions during vehicle operation, reduce the risk of the thermoplastic cover layer 13 peeling off from the fiber thermoplastic composite 11 due to friction and collision with external objects, and prolong the service life of the thermoplastic cover layer 13.

[0159] It can be understood that the thermoplastic cover layer 13 can be made of only polypropylene material; can be made of only polyamide; and can be made of a material formed by mixing polypropylene and polyamide.

[0160] The specific way of forming the fiber thermoplastic composite 11 is not limited.

[0161] For example, refer to Figure 5 and Figure 6 The fiber thermoplastic composite 11 includes a plurality of layers of continuous fiber composite material 111, each layer of continuous fiber composite material 111 including continuous fibers 1111 and a first thermoplastic resin matrix 1112 connecting the continuous fibers 1111.

[0162] It can be understood that the plurality of layers of continuous fiber composite material 111 are stacked.

[0163] The continuous fiber 1111 composite material is a composite material formed by embedding the continuous fiber 1111 in the matrix material. The fibers in the continuous fiber 1111 are continuously present throughout the material, which is used to make the formed structure have high strength and high stiffness, and the matrix material helps to transfer load and distribute stress between different continuous fibers 1111, reducing the risk of fiber breakage.

[0164] The composite material formed by the continuous fiber 1111 and the first thermoplastic resin matrix 1112 has the characteristics of high strength, high rigidity and high toughness, which helps to improve the structural strength and structural stiffness of the fiber thermoplastic composite 11, and is conducive to reducing the probability of damage to the outer surface of the vehicle.

[0165] It can be understood that the first thermoplastic resin matrix 1112 forms a thermoplastic material in the fiber thermoplastic composite 11.

[0166] The plurality of layers of continuous fiber composite material 111 can be formed into a fiber thermoplastic composite 11 with a desired shape by heating and molding according to the different shapes of the molding die.

[0167] In some embodiments, the continuous fiber 1111 is a continuous glass fiber.

[0168] Glass fiber is an inorganic fiber material with high tensile strength, good rigidity, non-combustibility, and chemical corrosion resistance.

[0169] The continuous glass fiber has high strength and good resilience. The use of continuous glass fiber and the first thermoplastic resin matrix 1112 helps to improve the tensile strength of the fiber thermoplastic composite 11, and also helps to improve the service life of the fiber thermoplastic composite 11.

[0170] In some embodiments, the weight fraction of the continuous fiber 1111 is 60-80, the weight fraction of the first thermoplastic resin matrix 1112 is 20 to 40, and the sum of the weight fraction of the continuous fiber and the weight fraction of the first thermoplastic resin matrix is 100.

[0171] By controlling the content of the continuous fibers 1111 and the first thermoplastic resin matrix 1112 within a reasonable range, it is possible to reduce the probability of the continuous fibers 1111 exposing the resin matrix due to too high a content of the continuous fibers 1111 and too low a content of the resin matrix, and to avoid the case of insufficient strength of the composite material due to too low a content of the continuous fibers 1111 and too high a content of the resin matrix, that is, to make the content of the continuous fibers 1111 and the content of the first thermoplastic resin matrix 1112 reach a more balanced state, so that the performance of the composite material meets the mechanical performance requirements of the fiber thermoplastic composite part 11.

[0172] The specific weight fraction of the continuous fibers 1111 can be 60, 62, 64, 65, 66, 68, 70, 72, 74, 75, 76, 78, 79, 80, etc.

[0173] The specific weight fraction of the first thermoplastic resin matrix 1112 can be 20, 22, 24, 25, 26, 28, 30, 32, 34, 35, 36, 38, 40, etc.

[0174] In some embodiments, the continuous fiber composite material layer includes 68-75 parts by weight of continuous fibers and 25-32 parts by weight of the first thermoplastic resin matrix. In this way, the content of the continuous fibers and the content of the first thermoplastic resin matrix are further limited so that the content of the continuous fibers and the content of the first thermoplastic resin matrix reach a more balanced state.

[0175] In some embodiments, the continuous fiber composite material layer includes 1-5 parts by weight of the first compatibilizer.

[0176] The first compatibilizer can improve the interfacial adhesion between the continuous fibers 1111 and the first thermoplastic resin matrix 1112 and improve the mechanical properties of the composite material, which can be maleic anhydride grafted compatibilizer, etc.

[0177] For example, the first compatibilizer includes any one or a combination of two or more of POE-g-MAH, SBS-g-MAH, SEBS-g-MAH, EPDM-g-MAH, ABS-g-MAH, ASA-g-MAH, LDPE-g-MAH, LLDPE-g-MAH, UHMWPE-g-MAH, SAN-g-MAH, and PP-GMA.

[0178] It should be noted that in the case where the sum of the weight fractions of the first thermoplastic resin matrix and the continuous fibers is 100, the weight fraction of the first compatibilizer added correspondingly ranges from 1 to 5.

[0179] In some embodiments, the continuous fiber composite layer includes 0.2-0.6 parts by weight of a first antioxidant. The first antioxidant can reduce the possibility of degradation of the composite due to oxidation at high temperatures during processing, prolong the service life of the composite, and can be, for example, a hindered amine antioxidant, a phosphite antioxidant, or the like.

[0180] By adding the first compatibilizer and the first antioxidant in the continuous fibers 1111 and the first thermoplastic resin matrix 1112, the mechanical properties and service life of the fiber thermoplastic composite 11 can be improved.

[0181] Illustratively, the first antioxidant includes one or more combinations of antioxidant 1098, antioxidant PEP-36. Antioxidant 1098, also known as N,N'-hexamethylenebis(3,5-di-tert-butyl-4-hydroxyphenylpropionamide), is a phenolic antioxidant. Antioxidant PEP-36, also known as tris[2.4-di-tert-butylphenyl] phosphite, can be used in combination with a phenolic antioxidant.

[0182] It should be noted that, in the case where the sum of the parts by weight of the first thermoplastic resin matrix and the continuous fibers is 100, the parts by weight of the first antioxidant added correspondingly ranges from 0.2 to 0.6.

[0183] The specific parts by weight of the first compatibilizer can be 1, 2, 3, 4, 5, etc.

[0184] The specific parts by weight of the first antioxidant can be 0.2, 0.3, 0.4, 0.5, 0.6, etc.

[0185] In some embodiments, the continuous fiber composite layer 111 also includes a flame retardant for improving the flame retardant properties of the composite, which can be, for example, a halogen-based flame retardant.

[0186] In some embodiments, the water absorption of each continuous fiber composite layer 111 is not higher than 0.3%.

[0187] By controlling the water absorption of the single-layer continuous fiber composite layer 111 within this range, the water absorption of the fiber thermoplastic composite 11 is reduced to a lower range, thereby reducing the deformation of the fiber thermoplastic composite 11 due to excessive absorption of water from the external environment during use of the vehicle.

[0188] In some embodiments, the water absorption of each continuous fiber composite layer 111 is 0.05%-0.3%. That is, 0.05%≤ water absorption of the continuous fiber composite layer ≤ 0.3%. In this way, the water absorption of the continuous fiber composite layer 111 is further limited.

[0189] In some embodiments, with reference to Figure 6The thickness of the single-layer continuous fiber composite layer 111 is 0.2 mm to 0.3 mm. That is, 0.2 mm≤L2≤0.3 mm.

[0190] In this way, on the one hand, the risk that the thickness of the single-layer continuous fiber composite layer 111 is too low to cause insufficient structural strength and structural rigidity of the single-layer continuous fiber composite layer 111 is reduced, and on the other hand, the risk that the thickness of the continuous fiber composite layer 111 is too large to cause the thickness of the fiber thermoplastic composite 11 to be too high when the multi-layer continuous fiber composite layer 111 is laid is reduced, and the risk that the overall aesthetic performance of the vehicle body frame 10 or the installation of other parts of the vehicle is interfered with and other problems occur is reduced.

[0191] The specific value of the thickness of the single-layer continuous fiber composite layer 111 can be 0.2 mm, 0.22 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.28 mm, 0.3 mm, etc.

[0192] It can be understood that the thermoplastic cover layer 13 covers one side of at least one continuous fiber composite layer 111.

[0193] In some embodiments, referring to Figure 6 The thickness of the thermoplastic cover layer 13 is not less than the thickness of the continuous fiber composite layer 111 covered by the thermoplastic cover layer 13. That is, L1≥L2.

[0194] In this way, it is beneficial to reduce the difficulty of the fibers protruding from the surface of the continuous fiber composite layer 111 to further penetrate the thermoplastic cover layer 13, reduce the probability of the fibers protruding from the surface of the thermoplastic cover layer 13, and reduce the roughness of the surface of the thermoplastic cover layer 13.

[0195] It can be understood that the stacking direction of the continuous fiber composite layer 111, the thickness direction of the thermoplastic cover layer 13, and the thickness direction of the continuous fiber composite layer 111 are the same.

[0196] In some embodiments, referring to Figure 6 The size of the thermoplastic cover layer 13 along the stacking direction of the continuous fiber composite layer 111 ranges from 0.3 mm to 0.5 mm. That is, 0.3 mm≤L1≤0.5 mm.

[0197] In this way, it is beneficial to reduce the probability of the exposed fibers in the continuous fiber composite layer 111 penetrating the thermoplastic cover layer 13 and reduce the roughness of the surface of the vehicle body frame 10.

[0198] The specific value of the size of the thermoplastic cover layer 13 along the stacking direction of the continuous fiber composite layer 111 can be 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, etc.

[0199] It can be understood that the plurality of continuous fiber composite material layers 111 are stacked with each other, and thus the continuous fiber composite material layer 111 located at the outer side will block the exposed fibers of the continuous fiber composite material layer 111 located at the inner side.

[0200] In some embodiments, the plurality of continuous fiber composite material layers 111 are stacked with each other, and the thermoplastic covering layer 13 covers at least one continuous fiber composite material layer 111 located at the outermost side along a side away from other continuous fiber composite material layers 111.

[0201] That is, only the surface of at least one of the two continuous fiber composite material layers 111 located at the outermost side is covered with the thermoplastic covering layer 13.

[0202] In this way, by utilizing the blocking effect of the continuous fiber composite material layer 111 on the exposed fibers of the continuous fiber composite material layer 111 adjacent thereto, only one or two thermoplastic covering layers 13 need to be arranged in the vehicle body frame 10, which is conducive to simplifying the manufacturing process of the vehicle body frame 10 and realizing the lightweight of the vehicle body frame 10.

[0203] In some embodiments, the reinforcing structure 12 comprises 30-65 parts by weight of long glass fibers and 35-70 parts by weight of a second thermoplastic resin matrix.

[0204] The composite material formed by the combination of the long glass fibers and the second thermoplastic resin matrix combines the high strength and high modulus characteristics of the long glass fibers and the good processability and recyclability of the thermoplastic resin, which is conducive to improving the elastic modulus, tensile strength and elongation at break of the reinforcing structure 12, and the second thermoplastic resin matrix is convenient for molding, such as injection molding, extrusion molding, compression molding, etc.

[0205] It should be noted that the long glass fibers refer to glass fibers with a length ranging from 8 mm to 12 mm. The specific length of the long glass fibers can be 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, etc.

[0206] The specific parts by weight of the long glass fibers in the reinforcing structure 12 can be 30, 35, 40, 45, 50, 55, 60, 65, and the parts by weight of the corresponding second thermoplastic resin matrix are 35, 40, 45, 50, 55, 60, 65, 70. It can be understood that in the embodiments in which the thermoplastic covering layer 13 covers the reinforcing structure 12, the thermoplastic covering layer 13 can cover the exposed fibers of the reinforcing structure 12, thereby being conducive to reducing the surface roughness of the reinforcing structure 12.

[0207] In some embodiments, the reinforcing structure 12 comprises 1-2 parts by weight of a second compatibilizer.

[0208] The second compatibilizer is used to improve the interfacial adhesion between the resin matrix and the long glass fibers, and to improve the mechanical properties of the composite material. The second compatibilizer can be a maleic anhydride grafted compatibilizer, an acrylic compatibilizer, etc.

[0209] It should be noted that, in the case where the sum of the weight parts of the second thermoplastic resin matrix and the long glass fibers is 100, the weight fraction of the second compatibilizer added correspondingly ranges from 1 to 2.

[0210] In some embodiments, the second compatibilizer includes any one or a combination of two or more of POE-g-MAH, SBS-g-MAH, SEBS-g-MAH, EPDM-g-MAH, ABS-g-MAH, ASA-g-MAH, LDPE-g-MAH, LLDPE-g-MAH, UHMWPE-g-MAH, SAN-g-MAH, and PP-GMA.

[0211] In some embodiments, the reinforcing structure 12 includes 0.1-0.4 parts by weight of a second antioxidant. The second antioxidant can prevent or delay the oxidation degradation of the material, reduce the possibility of degradation of the composite material due to high temperature oxidation during processing, and prolong the service life of the composite material. The second antioxidant can be a hindered amine antioxidant, a phosphite antioxidant, etc.

[0212] It should be noted that, in the case where the sum of the weight parts of the second thermoplastic resin matrix and the long glass fibers is 100, the weight fraction of the second antioxidant added correspondingly ranges from 0.1 to 0.4.

[0213] In some embodiments, the second antioxidant includes one or a combination of antioxidant 1098 and antioxidant PEP-36. Antioxidant 1098, also known as N,N'-hexamethylenebis(3,5-di-tert-butyl-4-hydroxyphenylpropionamide), is a phenolic antioxidant. Antioxidant PEP-36, also known as tris[2.4-di-tert-butylphenyl] phosphite, can be used in combination with phenolic antioxidants.

[0214] In some embodiments, the reinforcing structure 12 further includes a flame retardant for improving the flame retardant properties of the composite material, which can be a halogen-based flame retardant, for example.

[0215] The specific weight fraction of the second compatibilizer in the reinforcing structure 12 can be 1, 1.2, 1.5, 1.6, 1.8, 2, etc.

[0216] The specific weight fraction of the second antioxidant in the reinforcing structure 12 can be 0.1, 0.2, 0.3, 0.4, etc.

[0217] In some embodiments, the reinforcing structure 12 further includes a flame retardant.

[0218] The flame retardant is used to improve the flame retardant performance of the composite material, which can be a halogen-based flame retardant, for example.

[0219] In some embodiments, the continuous fibers 1111 of each layer of the continuous fiber composite material layer 111 are laid in one direction, and the laying angles of the continuous fibers 1111 of two adjacent layers of the continuous fiber composite material layer 111 are different.

[0220] In this way, the stress distribution of the fiber thermoplastic composite part 11 is improved, the mechanical properties of the fiber thermoplastic composite part 11 in different directions are substantially the same, and the risk of reduced service life due to the difference in mechanical properties of the fiber thermoplastic composite part 11 in a certain direction is reduced.

[0221] In some embodiments, the laying angle of the continuous fibers 1111 of at least one of the outermost two layers of the continuous fiber composite material layer 111 on either side of the fiber thermoplastic composite part 11 in the thickness direction is neither 0° nor 90°.

[0222] The laying method of neither 0° nor 90° can provide strength in multiple directions, and at least one of the outermost two layers can effectively absorb and disperse impact energy, reduce damage to the internal structure of the fiber thermoplastic composite part 11 caused by external impact, and improve the impact resistance of the fiber thermoplastic composite part 11.

[0223] It should be noted that 0° refers to the length direction of the structure formed by the continuous fiber composite material layer 111, and 90° refers to the width direction of the structure formed by the continuous fiber composite material layer 111. Among them, 0° and 90° are perpendicular to each other. The laying angle of the continuous fibers of the remaining continuous fiber composite material layers 111 is based on the direction of the 0° layer. For example, the laying angle of the continuous fibers is 45°, which means that the laying direction of the continuous fibers is 45° with the 0° direction. For example, when the vehicle body frame 10 includes a B pillar 142, the extension direction of the B pillar 142 is along the height direction of the vehicle, that is, the height direction of the vehicle is the direction of the continuous fibers 1111 with a laying angle of 0°, and the front-rear direction of the vehicle is the direction of the continuous fibers 1111 with a laying angle of 90°.

[0224] In some embodiments, the laying angle of the continuous fibers 1111 of the continuous fiber composite material layer 111 that is neither 0° nor 90° is 25° to 75°.

[0225] In this way, the multi-directional strength, shear strength, and fatigue resistance of the composite material are improved.

[0226] In some embodiments, the sum of the number of layers of the continuous fiber composite material layer 111 with the laying angle of the continuous fiber 1111 being non-0° and non-90° is 20% to 40% of the total number of layers of the continuous fiber composite material layer 111.

[0227] In this way, the non-0° and non-90° layers are within a reasonable proportion range, and the multidirectional strength, shear strength, and fatigue resistance of the composite material are within a reasonable numerical range, so that the structural strength and structural stiffness of the fiber thermoplastic composite part 11 meet the requirements.

[0228] The specific form of the reinforcing structure 12 is not limited.

[0229] In some embodiments, referring to Figure 12 The reinforcing structure 12 includes a plurality of reinforcing ribs 121, and the reinforcing ribs 121 are injection molded on the surface of the fiber thermoplastic composite part 11.

[0230] By using the injection molding process, the reinforcing ribs 121 and the fiber thermoplastic composite part 11 form an integrated structure, without the need for assembling the reinforcing ribs 121 and the fiber thermoplastic composite part 11, thereby simplifying the manufacturing process of the vehicle body frame 10. At the same time, by manufacturing the injection mold into different shapes, it is beneficial to optimize the shape and size of the reinforcing ribs 121 according to the main stress distribution of the fiber thermoplastic composite part 11, thereby improving the stiffness and strength of the fiber thermoplastic composite part 11 while reducing excessive redundancy of the structure.

[0231] In some embodiments, referring to Figure 12 The plurality of reinforcing ribs 121 are staggered with each other to form a mesh structure.

[0232] In this way, the plurality of reinforcing ribs 121 form a force transmission path between each other, so as to transmit the load received by the fiber thermoplastic composite part 11 to each reinforcing rib 121, thereby further improving the stiffness and strength of the fiber thermoplastic composite part 11.

[0233] In some embodiments, referring to Figure 3 , Figure 4 and Figure 7 The reinforcing structure 12 includes a reinforcing pipe 122, and the reinforcing pipe 122 is an integrated fiber composite tubular structure formed by pultrusion.

[0234] In this way, the reinforcing pipe 122 forms a second cavity inside the reinforcing pipe 122, thereby further improving the stiffness and strength of the reinforcing pipe 122. The integrated structure is beneficial to improve the production efficiency of the reinforcing structure 12 and reduce the weight of the reinforcing structure 12.

[0235] In some embodiments, the reinforcing pipe 122 is bonded to the fiber thermoplastic composite 11 so that the relative position between the two is kept stable, which is conducive to the load transfer of the fiber thermoplastic composite 11 to the reinforcing pipe 122.

[0236] In some embodiments, referring to Figure 5 and Figure 6 , the vehicle further comprises a paint layer 30, which is coated on the side surface of the thermoplastic cover layer 13 away from the fiber thermoplastic composite 11.

[0237] The paint layer 30 refers to the coating formed by the paint sprayed on the surface of the thermoplastic cover layer 13.

[0238] In this way, the paint is sprayed on the thermoplastic cover layer 13, which is conducive to improving the adhesion effect of the paint and making the appearance of the vehicle more beautiful.

[0239] The vehicle in an embodiment of the present application is described as follows:

[0240] The vehicle includes a body frame 10, a chassis 40, and a paint layer 30. The body frame 10 includes a fiber thermoplastic composite 11, a reinforcing structure 12, a thermoplastic cover layer 13, an interior trim mounting structure 15, and a door connecting structure 16. The fiber thermoplastic composite 11 has a first side and a second side opposite to each other. The first side faces an inner side of the vehicle, and the second side faces an outer side of the vehicle. The fiber thermoplastic composite 11 is provided with a first cavity 11a which is open to the inner side of the vehicle. At least part of the reinforcing structure 12 is arranged in the first cavity 11a to reinforce the strength of the fiber thermoplastic composite 11. The reinforcing structure 12 is made of a fiber composite material. The thermoplastic cover layer 13 covers at least the position opposite to the fiber thermoplastic composite 11 and the reinforcing structure 12. The thermoplastic cover layer 13 covers at least the second side of the fiber thermoplastic composite 11. The thermoplastic cover layer 13 does not contain fibers. At least part of the fiber thermoplastic composite 11 forms a body pillar 14 of the vehicle. The first cavity 11a of the body pillar 14 is provided with the reinforcing structure 12. The interior trim mounting structure 15 includes at least one interior trim panel mounting structure 154 and at least one safety belt accessory mounting structure 151. The reinforcing structure 12 of the body pillar 14 is provided with the safety belt accessory mounting structure 151. The at least one safety belt accessory mounting structure 151 is used to mount a safety belt accessory. The safety belt accessory includes at least one of a safety belt tensioner and a safety belt retractor 153. The interior trim panel mounting structure 154 is used to mount an interior trim panel 155. The interior trim panel 155 is used to cover at least part of the open position of the first cavity 11a from the inner side of the vehicle. The thermoplastic cover layer 13 covers at least part of the surface of the interior trim panel mounting structure 154 facing the inner side of the vehicle and at least part of the area outside the area where the reinforcing structure 12 is provided with the interior trim panel mounting structure 154. The at least one door connecting structure 16 is used to connect at least one of a door hinge 161, a door lock, and a door opening limiter. At least one of the reinforcing structure 12 in the body pillar 14 and the body pillar 14 is provided with the door connecting structure 16. The body pillar 14 includes at least one of an A-pillar 141, a B-pillar 142, and a C-pillar 143. The thermoplastic cover layer 13 also covers at least part of the area outside the area where the reinforcing structure 12 is provided with the door connecting structure 16. The type of thermoplastic material in the fiber thermoplastic composite 11 is the same as the type of thermoplastic material of the thermoplastic cover layer 13. The thermoplastic material in the fiber thermoplastic composite 11 is one or more of polypropylene and polyamide. The type of thermoplastic material of the thermoplastic cover layer 13 is one or more of polypropylene and polyamide.The fiber thermoplastic composite part 11 comprises a plurality of continuous fiber composite layers 111 stacked between each other, each continuous fiber composite layer 111 comprises continuous fibers 1111 and a first thermoplastic resin matrix 1112 connecting the continuous fibers 1111. The continuous fibers 1111 are continuous glass fibers. The weight fraction of the continuous fibers 1111 is 60-80, the weight fraction of the first thermoplastic resin matrix 1112 is 20-40, the sum of the weight fraction of the continuous fibers and the weight fraction of the first thermoplastic resin matrix is 100, and the continuous fiber composite layer further comprises 1-5 parts by weight of a first compatibilizer and 0.2-0.6 parts by weight of a first antioxidant. The water absorption of each continuous fiber composite layer 111 is not higher than 0.3%. The thickness of each continuous fiber composite layer 111 ranges from 0.2mm to 0.3mm. The dimension of the thermoplastic cover layer 13 along the stacking direction of the continuous fiber composite layers 111 ranges from 0.3mm to 0.5mm. The thermoplastic cover layer 13 covers at least one continuous fiber composite layer 111 on the side facing away from the other continuous fiber composite layers 111. The reinforcement structure 12 comprises 30-65 parts by weight of long glass fibers, 35-70 parts by weight of a second thermoplastic resin matrix, 1-2 parts by weight of a second compatibilizer, and 0.1-0.4 parts by weight of a second antioxidant. The sum of the weight fraction of the long glass fibers and the second thermoplastic resin matrix is 100. The reinforcement structure 12 comprises a plurality of reinforcing ribs 121 and a reinforcing tube 122, the reinforcing ribs 121 are injection molded on the surface of the fiber thermoplastic composite part 11, and the reinforcing tube 122 is a one-piece fiber composite tubular structure formed by pultrusion. The paint layer 30 covers the surface of the thermoplastic cover layer 13 facing away from the fiber thermoplastic composite part 11. The vehicle body frame 10 is arranged on the chassis 40 to jointly define a passenger compartment 10a of the vehicle, and the chassis 40 comprises a battery device 41, the housing of the battery device 41 forms at least part of the bottom wall of the passenger compartment 10a. The vehicle body frame 10 is arranged above the chassis 40, and the vehicle body frame 10 is detachably connected to the chassis 40.

[0241] The embodiments of the present application also provide a manufacturing method of a vehicle body frame 10, which is used to manufacture the vehicle body frame 10 of any of the preceding embodiments, referring to Figure 13 The manufacturing method comprises:

[0242] S10: laying a thermoplastic cover layer on one side surface of the fiber thermoplastic composite part.

[0243] It can be understood that after the vehicle body frame 10 forms part of the vehicle, the thermoplastic cover layer 13 is located on the second side of the fiber thermoplastic composite part 11.

[0244] S11: heating the thermoplastic cover layer and the fiber thermoplastic composite to a first temperature range, and extruding the thermoplastic cover layer and the fiber thermoplastic composite to bond them to form a transition structure.

[0245] In the first temperature range, at least one of the thermoplastic material in the thermoplastic cover layer 13 and the thermoplastic material in the fiber thermoplastic composite 11 is melted, so that the thermoplastic cover layer 13 and the fiber thermoplastic composite 11 are bonded.

[0246] S12: determining that the temperature of the transition structure is in a second temperature range, and extruding the transition structure to form a preset shape of the thermoplastic cover layer and the fiber thermoplastic composite.

[0247] In the second temperature range, the thermoplastic cover layer 13 and the fiber thermoplastic composite 11 are softened, so that they are extruded to form a desired shape.

[0248] S13: fixing the reinforcing structure to the fiber thermoplastic composite.

[0249] Thus, by extruding the thermoplastic cover layer 13 and the fiber thermoplastic composite 11 in two different temperature ranges, the connection strength of the two is improved, and the final shape of the two meets the expectation.

[0250] In some embodiments, the first temperature range is lower than the second temperature range, so that the thermoplastic cover layer 13 and the fiber thermoplastic composite 11 are preheated, which is beneficial to improve the bonding strength of the two.

[0251] The embodiments of the present application also provide another method for manufacturing a vehicle, which is used for manufacturing the vehicle body frame 10 in any of the foregoing embodiments, referring to Figure 14 The method comprises the following steps.

[0252] S20: controlling the relative movement of the lower shaping die and the first upper shaping die in a first direction to extrude the fiber thermoplastic composite between the two to form a preset shape.

[0253] S21: separating the fiber thermoplastic composite from the first upper shaping die.

[0254] S22: moving the second upper shaping die until it is spaced apart from the side of the fiber thermoplastic composite away from the lower shaping die by a first preset distance in the first direction, so that a cavity is formed between the fiber thermoplastic composite and the second upper shaping die.

[0255] S23: injecting a liquid thermoplastic material into the cavity.

[0256] S24: determining that the thermoplastic material in the cavity is cooled and solidified to form a thermoplastic cover layer, and moving the second upper molding die away from the thermoplastic cover layer.

[0257] S25: fixing the reinforcing structure to the fiber thermoplastic composite.

[0258] It can be understood that after the step S20 is completed, part of the fibers in the fiber thermoplastic composite 11 are exposed on the surface of the fiber thermoplastic composite 11. Therefore, in the step S23, the liquid thermoplastic material can immerse the exposed fibers on one side of the fiber thermoplastic composite 11.

[0259] In this way, using the shaped fiber thermoplastic composite 11 as a mold for shaping the thermoplastic cover layer 13 is conducive to making the shape of the thermoplastic cover layer 13 adapt to the fiber thermoplastic composite 11; the liquid thermoplastic material is easy to flow, which is conducive to the thermoplastic cover layer 13 completely covering the surface of one side of the fiber thermoplastic composite 11.

[0260] The specific way of fixing the reinforcing structure 12 to the fiber thermoplastic composite 11 is not limited. For example, the reinforcing structure 12 is formed on the surface of the fiber thermoplastic composite 11 by injection molding.

[0261] It can be understood that after the step of fixing the reinforcing structure 12 to the fiber thermoplastic composite 11 is completed, the surface of the thermoplastic cover layer 13 is sprayed with paint to form a paint layer 30.

[0262] The various embodiments / embodiments provided by the utility model can be combined with each other without contradiction.

[0263] The above only describes the preferred embodiments of the utility model and is not used to limit the embodiments in the utility model. For those skilled in the art, the embodiments of the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the utility model should be included in the protection scope of the embodiments of the utility model.

Claims

1. A vehicle characterized by comprising: Comprising: a vehicle body frame, the vehicle body frame comprising: a fiber thermoplastic composite member having a first side and a second side disposed opposite to each other, the first side facing an inner side of the vehicle, the second side facing an outer side of the vehicle, the fiber thermoplastic composite member being provided with a first cavity; a reinforcing structure at least partially disposed in the first cavity for reinforcing strength of the fiber thermoplastic composite member; a thermoplastic cover layer covering at least a portion of a surface of the second side of the fiber thermoplastic composite member, the thermoplastic cover layer being free of fiber.

2. The vehicle according to claim 1, wherein: a material of the reinforcing structure is a fiber composite material, the thermoplastic cover layer covering at least a portion of a surface of the fiber thermoplastic composite member opposite to the reinforcing structure; and / or, a material of the reinforcing structure is a fiber composite material, the first cavity is open toward the inner side of the vehicle, the thermoplastic cover layer covering at least a portion of a surface of the reinforcing structure toward the inner side of the vehicle; and / or, the thermoplastic cover layer covering at least a portion of a surface of the first side of the fiber thermoplastic composite member.

3. The vehicle of claim 1, wherein the vehicle body frame further comprises an interior trim mounting structure provided to at least one of the reinforcing structure and the fiber thermoplastic composite member, the interior trim mounting structure being for mounting an interior trim member of the vehicle.

4. The vehicle of claim 3, wherein at least a portion of the fiber thermoplastic composite member forms a vehicle body pillar of the vehicle, the first cavity of the vehicle body pillar being provided with the reinforcing structure, the interior trim mounting structure comprising at least one seat belt accessory mounting structure, at least one of the reinforcing structure in the vehicle body pillar and the vehicle body pillar being provided with the seat belt accessory mounting structure, the at least one seat belt accessory mounting structure being for mounting a seat belt accessory, the seat belt accessory comprising at least one of a seat belt tensioner and a seat belt retractor.

5. The vehicle of claim 4, wherein, the vehicle body pillar comprises at least one of an A-pillar, a B-pillar, and a C-pillar.

6. The vehicle of claim 3, wherein the first cavity is open toward the inner side of the vehicle, the interior trim mounting structure comprising at least one interior trim panel mounting structure, the at least one interior trim panel mounting structure being for mounting an interior trim panel, the interior trim panel being for covering at least a portion of the open position of the first cavity from the inner side of the vehicle.

7. The vehicle of claim 6, wherein a material of the at least one interior trim panel mounting structure is a fiber composite material, the thermoplastic cover layer covering at least a portion of a surface of the at least one interior trim panel mounting structure toward the inner side of the vehicle; and / or, the thermoplastic cover layer covering at least a portion of a surface of at least one of the reinforcing structure and the fiber thermoplastic composite member opposite to the at least one interior trim panel mounting structure.

8. The vehicle of claim 6, wherein, at least a portion of an area of the reinforcing structure and the fiber thermoplastic composite member other than an area provided with the interior trim panel mounting structure is covered with the thermoplastic cover layer.

9. The vehicle of any one of claims 1-8, wherein, at least a portion of the fiber thermoplastic composite member forms a vehicle body pillar of the vehicle, the vehicle body frame further comprising a door connecting structure, the first cavity of the vehicle body pillar being provided with the reinforcing structure, at least one of the door connecting structure being for connecting at least one of a door hinge, a door lock, and a door opening limiter; The reinforcing structure in the vehicle body pillar and the vehicle body pillar are provided with the door connecting structure; or the reinforcing structure in the vehicle body pillar and the vehicle body pillar are provided with the door connecting structure.

10. The vehicle of claim 9, wherein, The vehicle body pillar comprises at least one of A pillar, B pillar and C pillar.

11. The vehicle of claim 9, wherein, The thermoplastic covering layer also covers at least part of the area outside the area where the reinforcing structure is provided with the door connecting structure.

12. The vehicle of any one of claims 1-8, wherein, The type of thermoplastic material in the fiber thermoplastic composite is the same as the type of thermoplastic material of the thermoplastic covering layer.

13. The vehicle of any one of claims 1-8, wherein, The thermoplastic material in the fiber thermoplastic composite is one of polypropylene and polyamide. The type of thermoplastic material of the thermoplastic covering layer is one of polypropylene and polyamide.

14. The vehicle of any one of claims 1 to 8, characterized in that The fiber thermoplastic composite comprises a plurality of layers of continuous fiber composite material, each layer of the continuous fiber composite material comprises continuous fibers and a first thermoplastic resin matrix, and the first thermoplastic resin matrix connects the continuous fibers.

15. The vehicle of claim 14, wherein, The continuous fibers are continuous glass fibers.

16. The vehicle of claim 14, wherein, The water absorption rate of each layer of the continuous fiber composite material is not higher than 0.3%.

17. The vehicle of claim 14, wherein, The thickness of each layer of the continuous fiber composite material ranges from 0.2mm to 0.3mm.

18. The vehicle of claim 17, wherein, The thickness of the thermoplastic covering layer is not less than the thickness of the continuous fiber composite material layer it covers.

19. The vehicle of claim 18, wherein, The dimension of the thermoplastic covering layer along the stacking direction of the continuous fiber composite material layer ranges from 0.3mm to 0.5mm.

20. The vehicle of claim 14, wherein, The continuous fiber composite material layers are stacked, and the thermoplastic covering layer covers at least one of the outermost continuous fiber composite material layers on the side away from other continuous fiber composite material layers.

21. The vehicle of any one of claims 1-8, wherein, The reinforcing structure comprises a plurality of reinforcing ribs, which are injection molded on the surface of the fiber thermoplastic composite.

22. The vehicle of any one of claims 1-8, wherein, The reinforcing structure comprises a reinforcing tube, which is a one-piece fiber composite tubular structure formed by pultrusion.

23. The vehicle of claim 1, wherein, The vehicle body frame further comprises a paint layer, which covers the surface of the thermoplastic covering layer on the side away from the fiber thermoplastic composite.

24. The vehicle of claim 1, wherein, The vehicle further comprises a chassis, and the vehicle body frame is arranged on the chassis to jointly form a passenger compartment of the vehicle, and the chassis comprises a battery device, and the shell of the battery device forms at least part of the bottom wall of the passenger compartment.

25. The vehicle of claim 1, wherein, The vehicle further comprises a chassis, and the vehicle body frame is arranged on the chassis and above the chassis, and the vehicle body frame and the chassis are detachably connected.

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