Frame and vehicle

Abstract

The utility model discloses a frame and a vehicle, the frame comprises: a chemical cabin, the chemical cabin comprises a plurality of cross beams, a longitudinal beam and an expansion beam, the cross beams are connected with the longitudinal beam, at least one of the plurality of cross beams is a first cross beam, the expansion beam extends along the length direction of the first cross beam and is connected with the longitudinal beam, the expansion beam is arranged close to the first cross beam, the orthographic projection of the expansion beam on the horizontal plane is located in the orthographic projection of the first cross beam on the horizontal plane. According to the utility model, the space ratio of the battery monomers in the frame can be increased, the electric quantity of the whole vehicle can be increased, the collision force can be better resisted when the side collision of the whole vehicle occurs, and the probability of deformation of the longitudinal beam is reduced, so that the probability of collision deformation of the chemical cabin is reduced; therefore, the number of parts of the frame can be reduced while the vehicle collision requirement is met, the space is saved, the space proportion of the battery in the frame is further increased, and the electric quantity of the whole vehicle is increased.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a frame and a vehicle. Background Art

[0002] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, batteries, as the power source of electric vehicles, play an irreplaceable and important role. Batteries are generally installed on the frame. In order to meet the collision requirements of the vehicle, the frame is generally equipped with more reinforcements, such as strengthening beams. However, this will result in a large number of frame parts and occupy a larger space, thus affecting the layout space of the battery and not conducive to increasing the power of the whole vehicle. Utility Model Content

[0003] The embodiments of the present application provide a frame and a vehicle, which can effectively reduce the number of parts while meeting the vehicle collision requirements, increase the space occupied by the battery in the frame, and help improve the power of the entire vehicle.

[0004] In a first aspect, an embodiment of the present application provides a vehicle frame, comprising: a chemical cabin, the chemical cabin comprising a cross beam, a longitudinal beam and an expansion beam, there are multiple cross beams, and they are connected to the longitudinal beams, at least one of the multiple cross beams is a first cross beam, the expansion beam extends along the length direction of the first cross beam and is connected to the longitudinal beam, the expansion beam is arranged close to the first cross beam, and the orthographic projection of the expansion beam on the horizontal plane is located within the orthographic projection of the first cross beam on the horizontal plane.

[0005] In the above technical solution, by setting the frame to include a chemical cabin, the chemical cabin can be used to place battery cells, so that the battery cells can be integrated on the frame, increasing the space occupied by the battery in the frame, which is conducive to increasing the power of the whole vehicle. Moreover, since the expansion beam is arranged close to the first crossbeam, and the positive projection of the expansion beam on the horizontal plane is located within the positive projection of the first crossbeam on the horizontal plane, the first crossbeam and the expansion beam can jointly play the role of bearing the collision of the whole vehicle. The position of the first crossbeam and the expansion beam has a higher support strength, which can better resist the collision force when the whole vehicle is hit sideways, reduce the probability of deformation of the longitudinal beam, and thus reduce the probability of collision deformation of the chemical cabin. In this way, while meeting the vehicle collision requirements, the number of frame parts can be reduced, space can be saved, and the space occupied by the battery in the frame can be further increased, thereby increasing the power of the whole vehicle.

[0006] In some embodiments of the present application, the expansion beam includes: an expansion beam joint, which is connected to the longitudinal beam and has a fixing groove on the side away from the longitudinal beam; an expansion beam body, part of which is arranged in the fixing groove and connected to the expansion beam joint.

[0007] In the above technical solution, the fixing groove cooperates with the expansion beam body to achieve a good limiting effect. After the expansion beam joint and the expansion beam body are connected, they are limited by the fixing groove, thereby reducing the probability of the expansion beam joint and the expansion beam body being separated, and improving the installation reliability of the expansion beam joint and the expansion beam body. Moreover, the expansion beam joint can be supported on at least two opposite sides of the expansion beam body through the fixing groove, which can play a certain reinforcing role, improve the structural strength between the expansion beam body and the expansion beam joint, which is conducive to improving the strength of the expansion beam, improving the collision safety of the chemical cabin, and can reduce the number of reinforcements while meeting the collision safety requirements, which is conducive to reducing the weight of the frame and improving the electric endurance of the whole vehicle.

[0008] In some embodiments of the present application, the expansion beam joint includes: a main body portion, which is connected to the longitudinal beam; and a side wall portion, which is two and is spaced apart along the length direction of the longitudinal beam and connected to the main body portion, and the two side wall portions and the main body portion jointly define a fixing groove.

[0009] In the above technical solution, by setting the expansion beam joint into the above structure, the fixing groove formed by the expansion beam joint can have a relatively reliable limiting effect on the expansion beam body, and its structure is relatively simple, which can reduce the difficulty of forming the fixing groove, thereby reducing the manufacturing cost. In addition, the above structure can also make the fixing groove have a relatively reliable limiting effect on the expansion beam body, and can also reduce the number of groove walls of the fixing groove, reduce the difficulty of installation between the expansion beam body and the fixing groove, and improve assembly efficiency.

[0010] In some embodiments of the present application, a gap between the expansion beam body and the main body portion is T1, wherein 3 mm ≤ T1 ≤ 5 mm.

[0011] In the above technical solution, by setting the gap between the expansion beam body and the main body part within the range of 3mm to 5mm, the expansion beam body and the main body part can have a relatively suitable gap, and when a collision occurs, the collision force can be timely and effectively transmitted from the main body part to the expansion beam body, and the expansion beam body can effectively support the longitudinal beam to resist side collision, reduce the probability of the longitudinal beam being deformed by collision, and improve the collision safety of the frame. Secondly, by setting the gap between the expansion beam body and the main body part within the above range, the manufacturing accuracy and process requirements of the expansion beam body and the expansion beam joint can be relatively suitable, thereby reducing the manufacturing cost.

[0012] In some embodiments of the present application, the expansion beam body and the side wall portion are connected by welding to form a welding portion, and the welding portion extends along the length direction of the side wall portion. In this technical solution, by welding the expansion beam body and the side wall portion to form a welding portion, compared with other connection methods such as bolts, the expansion beam body and the side wall portion are connected by welding, which has higher connection reliability, which is conducive to improving the connection strength of the expansion beam body and the expansion beam joint, thereby improving the support reliability of the expansion beam in the event of a collision.

[0013] In some embodiments of the present application, a gap between the expansion beam body and the adjacent side wall portion is T2, wherein 0 mm ≤ T2 ≤ 0.8 mm.

[0014] In the above technical solution, by setting the gap between the expansion beam body and the adjacent side wall portion in the range of 0mm to 8mm, the gap between the expansion beam body and the adjacent side wall portion can be made more appropriate, which is conducive to making the welding part have more reliable welding quality.

[0015] In some embodiments of the present application, the expansion beam joint further includes: a reinforcement portion, which is disposed on a side of the side wall portion away from the fixing groove, and which extends along the length direction of the longitudinal beam and connects the main body portion and the side wall portion.

[0016] In the above technical solution, by configuring the expansion beam joint to also include a reinforcement portion, the reinforcement portion connects the main body portion and the side wall portion to form a stable structure, thereby improving the overall structural strength of the expansion beam joint, thereby being able to better support the longitudinal beam in the event of a collision, which is beneficial to improving collision safety.

[0017] In some embodiments of the present application, a weight-reducing hole is provided in the portion of the main body located in the fixing groove. In this technical solution, the weight of the expansion beam joint can be reduced through the weight-reducing hole, which facilitates the assembly of the expansion beam joint and the longitudinal beam, and can also reduce the weight of the entire frame, which is conducive to increasing the power of the entire vehicle. Secondly, the weight-reducing hole can also save the material of the expansion beam joint, which can reduce the manufacturing cost.

[0018] In some embodiments of the present application, the chemical cabin further includes: an upper cover plate, the upper cover plate is connected to the longitudinal beam, the first cross beam is connected to the upper cover plate, and the first cross beam is bent toward a side away from the upper cover plate to form at least one bent portion.

[0019] In the above technical solution, at least one bending portion is formed by bending the first crossbeam toward a side away from the upper cover plate, thereby improving the load capacity of the first crossbeam and making the first crossbeam have higher strength. Moreover, after the first crossbeam and the upper cover plate are connected, a closed cavity structure can be formed, which can also improve the structural strength of the assembly formed by the first crossbeam and the upper cover plate, thereby improving the reliability of the chemical cabin. The above structure can reduce the use of reinforcements and the number of parts of the frame while meeting the collision safety requirements, which is conducive to reducing the weight of the frame and further improving the electric endurance of the whole vehicle.

[0020] In some embodiments of the present application, the bending parts include at least two, the portion of the first beam located between any two adjacent bending parts forms a straight portion, the straight portion is fitted on the upper cover plate, the expansion beam is arranged corresponding to at least one straight portion, and the chemical cabin also includes: a fastener, the fastener connects the straight portion, the upper cover plate and the expansion beam.

[0021] In the above technical solution, by connecting the straight portion, the upper cover plate and the expansion beam with fasteners, the first crossbeam, the upper cover plate and the expansion beam can be directly connected, so that the bonding of the first crossbeam, the upper cover plate and the expansion beam can be increased, and the strength of the connection area of ​​the first crossbeam, the upper cover plate and the expansion beam can be improved, which can provide better support in the event of a collision. In addition, the first crossbeam, the upper cover plate and the expansion beam are connected by fasteners, and the collision force can be dispersed among the three components in the event of a collision, which is conducive to weakening the collision force, improving the collision performance of the chemical cabin, and thus improving the collision safety of the frame.

[0022] In some embodiments of the present application, the chemical cabin further includes: an upper cover plate and fasteners, the upper cover plate is connected to the longitudinal beam, the first cross beam is connected to the upper cover plate, and the fasteners connect the first cross beam, the upper cover plate and the expansion beam.

[0023] In the above technical solution, the first cross beam, the upper cover plate and the expansion beam are connected by fasteners, thereby improving the strength of the connection area among the first cross beam, the upper cover plate and the expansion beam, providing better support, thereby improving the collision performance of the chemical cabin and thus improving the collision safety of the frame.

[0024] In some embodiments of the present application, the fasteners are threaded fasteners, and the first cross beam, the upper cover plate and the expansion beam are connected by an FDS process.

[0025] In the above technical solution, the threaded fastener may refer to a screw. The threaded fastener is used to connect the first beam, the upper cover plate and the expansion beam by a process. The threaded fastener can connect dissimilar materials, that is, the first beam, the upper cover plate and the expansion beam can be made of different materials, which can provide more possibilities for the design of the first beam, the upper cover plate and the expansion beam and reduce costs. Moreover, the first beam, the upper cover plate and the expansion beam do not need to be pre-drilled, which can also reduce the process steps and improve assembly efficiency. Moreover, when the threaded fastener is connected by the FDS process, the heated material can extend and flow around the hole, thereby further improving the connection strength of the first beam, the upper cover plate and the expansion beam.

[0026] In some embodiments of the present application, an adhesive member capable of withstanding strong structural bonding is provided between the expansion beam and the upper cover plate.

[0027] In the above technical solution, the expansion beam and the upper cover plate are connected by an adhesive, so that the expansion beam and the upper cover plate can be bonded and fixed, and the connection strength between the expansion beam and the upper cover plate can be effectively improved by cooperating with the fasteners, which is beneficial to reduce the number of reinforcements while meeting the collision safety requirements, and then reduce the number of body parts, thereby reducing the weight of the frame and improving the electric endurance of the vehicle.

[0028] In some embodiments of the present application, the first crossbeam includes: a crossbeam joint, which is connected to the longitudinal beam; and a crossbeam body, which is connected to the crossbeam joint, and the tensile strength of the crossbeam body is greater than the tensile strength of the crossbeam joint.

[0029] In the above technical solution, by setting the first crossbeam to include a crossbeam joint and a crossbeam body, on the one hand, the first crossbeam can be manufactured in parts, which is conducive to reducing the manufacturing difficulty of the first crossbeam, thereby reducing the manufacturing cost. Moreover, the crossbeam joint can be assembled to the longitudinal beam first, and then the crossbeam body can be assembled, thereby reducing the probability of the crossbeam being unable to be assembled to the longitudinal beam due to assembly errors, and reducing the difficulty of assembling the first crossbeam and the longitudinal beam. Since the tensile strength of the crossbeam body is greater than the tensile strength of the crossbeam joint, when the collision force of the longitudinal beam is transmitted from the crossbeam joint to the crossbeam body when a collision occurs, the crossbeam joint has a greater probability of deforming before the crossbeam body to play a buffering and energy-absorbing role, reducing the probability of the longitudinal beam being greatly deformed due to the greater support stiffness of the crossbeam body to the longitudinal beam, and can better balance the deformation of the longitudinal beam and the impact energy that the frame finally bears, which is conducive to improving the collision safety of the frame.

[0030] In some embodiments of the present application, the cross beam joint is provided with a collapse portion, and the extension direction of the collapse portion is perpendicular to the length direction of the cross beam body. In this technical solution, when the cross beam joint is subjected to a large collision force, the collapse portion can deform before the cross beam joint and play a buffering and energy absorbing role first, that is, by providing the collapse portion, the buffering and energy absorbing effect of the cross beam joint as a whole can be improved, and the probability of the cross beam body having a large supporting stiffness on the longitudinal beam can be reduced, which can further improve the collision safety of the frame.

[0031] In some embodiments of the present application, the first cross beam is a seat cross beam, and the longitudinal beam is a threshold beam. In this technical solution, by setting the first cross beam as the seat cross beam and the longitudinal beam as the threshold beam, the collision performance of the driver's position in the frame can be improved, thereby improving the safety of the driver in the case of a side collision.

[0032] In a second aspect, an embodiment of the present application further provides a vehicle, comprising a frame as described above.

[0033] In the above technical solution, the frame uses a relatively small number of parts while meeting the side impact safety requirements, and the internal space of the chemical cabin is larger, so that more battery cells can be arranged, which is beneficial to reducing the number of parts of the body and increasing the power of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A three-dimensional diagram of a partial structure of a frame provided in some embodiments of the present application Figure 1 ;

[0036] Figure 2 Partial structural cross-section of a frame provided in some embodiments of the present application Figure 1 ;

[0037] Figure 3 for Figure 2 A local enlarged schematic diagram of location III;

[0038] Figure 4 Partial structural cross-section of a frame provided in some embodiments of the present application Figure 2 ;

[0039] Figure 5 for Figure 4 A local enlarged schematic diagram of the V portion;

[0040] Figure 6 A three-dimensional diagram of a partial structure of a frame provided in some embodiments of the present application Figure 2 ;

[0041] Figure 7 A three-dimensional diagram of a partial structure of a frame provided in some embodiments of the present application Figure 3 ;

[0042] Figure 8 for Figure 7 A local enlarged schematic diagram of position VIII;

[0043] Fig. 9 A schematic diagram of the three-dimensional structure of an expansion beam joint provided in some embodiments of the present application;

[0044] Fig.10 for Figure 1 A local enlarged schematic diagram of point X.

[0045] Icons: 100, frame; 10, chemical cabin; 1, crossbeam; 11, first crossbeam; 101, bending portion; 102, straight portion; 103, edge portion; 103, collapsed portion; 111, crossbeam joint; 112, crossbeam body; 12, longitudinal beam; 13, expansion beam; 131, expansion beam joint; 131a, fixing groove; 1311, main body; 1311a, weight-reducing hole; 1312, side wall; 1313, reinforcement portion; 132, expansion beam body; 133, welding portion; 14, upper cover; 15, fastener; 16, adhesive; 17, core-pulling rivet; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0048] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0049] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0051] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0052] The term "plurality" used in the present application refers to two or more (including two).

[0053] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0054] The battery cell includes a shell, an electrode assembly and an electrolyte, and the shell is used to contain the electrode assembly and the electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.

[0055] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0056] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, batteries, as the power source of electric vehicles, play an irreplaceable and important role. Batteries are generally installed on the frame. In order to meet the collision requirements of the vehicle, the frame is generally equipped with more reinforcements. However, this results in a large number of frame parts and occupies a large space, which affects the layout space of the battery and is not conducive to increasing the power of the whole vehicle.

[0057] In a general vehicle frame, the battery does not directly bear the collision safety performance of the entire vehicle. The side impact and column impact of the entire vehicle are all borne by the body door sill, longitudinal beam, door sill reinforcement plate and other parts as the collision safety force transmission path. For example, a large number of reinforcement beams will be set between the battery frame and the door sill beam. Since there are many reinforcement beams and the space they occupy is also relatively large, the space occupied by the battery in the frame is reduced, which is not conducive to increasing the power of the entire vehicle.

[0058] Based on the above considerations, in order to solve the problem in the related art that in order to meet the vehicle collision requirements, a large number of parts and components are set between the longitudinal beam of the vehicle and the frame of the battery, resulting in a large number of parts and components, occupying a large space, thereby affecting the power of the whole vehicle. The present application designs a frame, including a chemical cabin, the chemical cabin includes a crossbeam, a longitudinal beam and an expansion beam, there are multiple crossbeams, and they are connected to the longitudinal beam, at least one of the multiple crossbeams constitutes a first crossbeam, the expansion beam extends along the length direction of the first crossbeam and connects to the longitudinal beam, the expansion beam is arranged close to the first crossbeam, and the orthographic projection of the expansion beam on the horizontal plane is located within the orthographic projection of the first crossbeam on the horizontal plane.

[0059] In a vehicle frame of this structure, by configuring the vehicle frame to include a chemical cabin, the chemical cabin can be used to place battery cells, so that the battery cells can be integrated into the vehicle frame, increasing the space occupied by the battery in the vehicle frame, which is beneficial to increasing the power of the entire vehicle. Moreover, since the expansion beam is arranged close to the first cross beam, and the positive projection of the expansion beam on the horizontal plane is located within the positive projection of the first cross beam on the horizontal plane, the first cross beam and the expansion beam can jointly play the role of bearing the collision of the entire vehicle. The positions of the first cross beam and the expansion beam have higher support strength, which can better resist the collision force when the entire vehicle is hit sideways, reduce the probability of deformation of the longitudinal beam, and thus reduce the probability of collision deformation of the chemical cabin. In this way, while meeting the vehicle collision requirements, the number of frame parts can be reduced, space can be saved, and the space occupied by the battery in the frame can be further increased, thereby increasing the power of the entire vehicle.

[0060] The vehicle frame disclosed in the embodiment of the present application can be used in, but not limited to, pure electric vehicles, hybrid vehicles, and other vehicles. Moreover, the vehicle can be, but not limited to, a passenger vehicle, a freight vehicle, an off-road vehicle, an engineering vehicle, and the like. This is conducive to expanding the scope of application of the vehicle frame.

[0061] According to some embodiments of the present application, in the first aspect, referring to Figures 1 to 3 The embodiment of the present application provides a vehicle frame 100, including a chemical cabin 10, the chemical cabin 10 includes a cross beam 1, a longitudinal beam 12 and an expansion beam 13, there are multiple cross beams 1, and they are connected to the longitudinal beam 12, at least one of the multiple cross beams 1 is a first cross beam 11, the expansion beam 13 extends along the length direction of the first cross beam 11 and is connected to the longitudinal beam 12, the expansion beam 13 is arranged close to the first cross beam 11, and the orthographic projection of the expansion beam 13 on the horizontal plane is located within the orthographic projection of the first cross beam 11 on the horizontal plane.

[0062] The chemical compartment 10 may refer to a compartment or housing in the frame 100 for accommodating battery cells. In other words, the frame 100 of the present application integrates the function of the battery, thereby eliminating the battery box or frame structure. The chemical compartment 10 can be used as a partial structure of the frame 100 and also as a battery box or frame structure. The chemical compartment 10 and the internal battery cells together constitute the battery of the entire vehicle, providing power supply for the entire vehicle.

[0063] The cross beam 1 may refer to a beam extending along the width direction of the frame 100 ( Figure 1 The longitudinal beam 12 may refer to a support beam extending in the second direction Y of the frame 100. Figure 1 The cross beam 1 and the longitudinal beam 12 are connected to form the external frame structure of the chemical cabin 10. One or more of the multiple cross beams 1 can be recorded as the first cross beam 11, and the expansion beam 13 is arranged corresponding to at least one of the first cross beams 11. For example, refer to Figure 2 One of the plurality of beams 1 is a first beam 11 , and an expansion beam 13 is disposed below the first beam 11 .

[0064] The expansion beam 13 may refer to a main body that can be used to limit the battery cells inside the chemical cabin 10 . The expansion of the battery cells can be limited and suppressed by the expansion beam 13 .

[0065] “The expansion beam 13 is disposed close to the first cross beam 11 ” may mean that the expansion beam 13 is disposed close to the first cross beam 11 , and the distance between the expansion beam 13 and the first cross beam 11 is relatively small.

[0066] In “the orthographic projection of the expansion beam 13 on the horizontal plane is located within the orthographic projection of the first cross beam 11 on the horizontal plane”, the horizontal plane may refer to a plane parallel to the ground, which may be understood as the arrangement positions of the expansion beam 13 and the first cross beam 11 coincide with each other, wherein the expansion beam 13 may be arranged on the upper side of the first cross beam 11 or on the lower side of the first cross beam 11.

[0067] When the vehicle frame 100 is hit, especially when a side collision occurs ( Figure 1 In other words, under the joint action of the expansion beam 13 and the first crossbeam 11, the probability of deformation of the longitudinal beam 12 is relatively low. In this way, it is not necessary to set more reinforcements (such as reinforcement beams) while meeting the collision safety requirements. The number of parts required for the frame 10 is relatively small, which can save space in the chemical cabin 10 and provide a larger accommodation space for the battery cells. Moreover, the frame 100 with this structure can also improve the performance of the chemical cabin 10 (such as random vibration and mode, etc.).

[0068] In the above technical solution, by setting the frame 100 to include the chemical cabin 10, the chemical cabin 10 can be used to place the battery monomer, so that the battery monomer can be integrated on the frame 100, and the space occupied by the battery in the frame 100 is increased, which is conducive to increasing the power of the whole vehicle. In addition, since the expansion beam 13 is arranged close to the first cross beam 11, and the positive projection of the expansion beam 13 on the horizontal plane is located within the positive projection of the first cross beam 11 on the horizontal plane, the first cross beam 11 and the expansion beam 13 can jointly play the role of bearing the collision of the whole vehicle. The position of the first cross beam 11 and the expansion beam 13 has a higher support strength, which can better resist the collision force when the whole vehicle is hit sideways, reduce the probability of deformation of the longitudinal beam 12, and thus reduce the probability of collision deformation of the chemical cabin 10. In this way, while meeting the vehicle collision requirements, the number of components of the frame 100 can be reduced, space can be saved, and the space occupied by the battery in the frame 100 can be further increased, thereby increasing the power of the whole vehicle.

[0069] In some embodiments of the present application, reference Figure 3 , Figure 5 and Fig. 9 The expansion beam 13 includes an expansion beam joint 131 and an expansion beam body 132. The expansion beam joint 131 is connected to the longitudinal beam 12, and a fixing groove 131a is provided on the side away from the longitudinal beam 12; a part of the expansion beam body 132 is provided in the fixing groove 131a and is connected to the expansion beam joint 131.

[0070] The expansion beam body 132 may refer to a main body portion of the expansion beam 13 .

[0071] The expansion beam joint 131 may refer to a joint component used to connect the expansion beam body 132 and the longitudinal beam 12. The expansion beam joint 131 may be a low-pressure casting, and may be made of, but not limited to, aluminum alloy, zinc alloy, and zinc alloy.

[0072] The fixing groove 131a may refer to a groove structure formed on the expansion beam joint 131 for mounting the expansion beam body 132. The shape of the fixing groove 131a is substantially the same as the cross-sectional shape of the expansion beam body 132. The cross-sectional shape of the expansion beam body 132 may be, but is not limited to, rectangular, circular, trapezoidal, etc., and correspondingly, the fixing groove 131a may be a rectangular groove, a circular groove, a trapezoidal groove, etc.

[0073] The expansion beam body 132 and the expansion beam joint 131 are connected to each other, which may refer to a fixed connection between the two. The connection method of the expansion beam joint 131 may be, but is not limited to, welding, screwing, and riveting. Figure 8 The expansion beam joint 131 and the longitudinal beam 12 can be connected by means of core-pulling rivets.

[0074] In the above technical solution, the fixing groove 131a cooperates with the expansion beam body 132 to achieve a good limiting effect. After the expansion beam joint 131 and the expansion beam body 132 are connected, they are limited by the fixing groove 131a, thereby reducing the probability of the expansion beam joint 131 and the expansion beam body 132 being separated, and improving the installation reliability of the expansion beam joint 131 and the expansion beam body 132. Moreover, the expansion beam joint 131 can be supported on at least two opposite sides of the expansion beam body 132 through the fixing groove 131a, which can play a certain strengthening role, improve the structural strength between the expansion beam body 132 and the expansion beam joint 131, which is conducive to improving the strength of the expansion beam 13, improving the collision safety of the chemical cabin 10, and can reduce the number of reinforcements while meeting the collision safety requirements, which is conducive to reducing the weight of the frame 100 and improving the electric endurance of the whole vehicle.

[0075] In some embodiments of the present application, reference Fig. 9 The expansion beam joint 131 includes a main body 1311 and a side wall 1312. The main body 1311 is connected to the longitudinal beam 12. There are two side walls 1312, which are spaced apart along the length direction of the longitudinal beam 12 and connected to the main body 1311. The two side walls 1312 and the main body 1311 jointly define a fixing groove 131a.

[0076] The main body portion 1311 may refer to the main structural portion of the expansion beam joint 131 .

[0077] The side wall portion 1312 may refer to a portion of the expansion beam joint 131 located on the side of the main body portion 1311 .

[0078] By setting the expansion beam joint 131 into the above structure, the fixing groove 131a is U-shaped, and the fixing groove 131a is open at both ends in the third direction Z. Since the collision of the vehicle 1000 generally occurs in the first direction X and the second direction Y, by setting the two side wall portions 1312 to be spaced apart along the length direction of the longitudinal beam 12, the main body 1311 can support the expansion beam main body 132 when the frame 100 collides in the second direction Y, and the two side wall portions 1312 can support the expansion beam main body 132 when the frame 100 collides in the first direction X, thereby improving the reliability of the expansion beam 130 during the collision.

[0079] In the above technical solution, by setting the expansion beam joint 131 to the above structure, the fixing groove 131a formed by the expansion beam joint 131 can have a relatively reliable limiting effect on the expansion beam body 132, and its structure is relatively simple, which can reduce the difficulty of forming the fixing groove 131a, thereby reducing the manufacturing cost. In addition, the above structure can also enable the fixing groove 131a to have a relatively reliable limiting effect on the expansion beam body 132, while also reducing the number of groove walls of the fixing groove 131a, reducing the difficulty of installation between the expansion beam body 132 and the fixing groove 131a, and improving assembly efficiency.

[0080] In some embodiments of the present application, reference Figure 4 and Figure 5 The gap between the expansion beam body 132 and the main body 1311 is T1, wherein 3mm≤T1≤5mm.

[0081] The gap T1 between the expansion beam body 132 and the main body portion 1311 may be, but is not limited to, 3 mm, 3.2 mm, 3.4 mm, 3.6 mm, 3.8 mm, 4.0 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm, 5.0 mm, and the like.

[0082] If the gap T1 between the expansion beam body 132 and the main body 1311 is less than 3 mm, the manufacturing accuracy and process requirements of the expansion beam body 132 and the expansion beam joint 131 are relatively high, resulting in higher manufacturing costs.

[0083] If the gap T1 between the expansion beam body 132 and the main body 1311 is greater than 5 mm, the gap between the expansion beam body 132 and the main body 1311 is relatively large. When the chemical cabin 10 collides in the second direction Y, since the collision occurs in a very short time (a few milliseconds), the time for the collision force to be transmitted from the main body 1311 to the expansion beam body 132 is relatively long, and the expansion beam joint 131 fails to transmit the collision force to the expansion beam body 132 in time. A large part of the collision is borne by the longitudinal beam 12 and the expansion beam joint 131, and the expansion beam body 132 does not play a significant supporting role. Therefore, the longitudinal beam 12 is more likely to be deformed, and the deformation is more likely to invade the internal space of the chemical cabin 10, which is easy to damage the battery cells.

[0084] In the above technical solution, by setting the gap T1 between the expansion beam body 132 and the main body 1311 within the range of 3mm to 5mm, the expansion beam body 132 and the main body 1311 can have a relatively suitable gap. When a collision occurs, the collision force is timely and effectively transmitted from the main body 1311 to the expansion beam body 132. The expansion beam body 132 can effectively support the longitudinal beam 12 to resist side collision, reduce the probability of the longitudinal beam 12 being deformed by collision, and improve the collision safety of the frame 100. By setting the gap T1 between the expansion beam body 132 and the main body 1311 within the above range, the manufacturing accuracy and process requirements of the expansion beam body 132 and the expansion beam joint 131 can be relatively suitable, thereby reducing the manufacturing cost.

[0085] In some embodiments of the present application, reference Figure 7 and Figure 8 The expansion beam body 132 and the side wall portion 1312 are welded to form a welding portion 133 , and the welding portion 133 extends along the length direction of the side wall portion 1312 .

[0086] The welding portion 133 may refer to a weld formed by welding the expansion beam body 132 and the side wall portion 1312; or, a welding rod or other components welded between the expansion beam body 132 and the side wall portion 1312. Referring to the foregoing, the side wall portion 1312 may be a wall panel arranged along the third direction Z, so the length direction of the side wall portion 1312 may refer to the third direction Z. The welding method of the expansion beam body 132 and the side wall portion 1312 may be, but is not limited to, laser welding, arc welding, and the like.

[0087] In the above technical solution, the expansion beam main body 132 and the side wall portion 1312 are welded together to form a welding portion 133. Compared with other connection methods such as bolts, the expansion beam main body 132 and the side wall portion 1312 are connected by welding, which has higher connection reliability, which is beneficial to improve the connection strength between the expansion beam main body 132 and the expansion beam joint 131, thereby improving the support reliability of the expansion beam 13 in the event of a collision.

[0088] In some embodiments of the present application, reference Figure 3 The gap between the expansion beam body 132 and the adjacent side wall portion 1312 is T2, wherein 0 mm ≤ T2 ≤ 0.8 mm.

[0089] The gap T2 between the expansion beam body 132 and the adjacent side wall portion 1312 may be, but is not limited to, 0 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc.

[0090] Since the expansion beam main body 132 and the side wall portion 1312 are welded together, if the gap T2 between the expansion beam main body 132 and the adjacent side wall portion 1312 is greater than 0.8 mm, the gap between the expansion beam main body 132 and the adjacent side wall portion 1312 is larger, which affects the welding quality of the welding portion 133 between the expansion beam main body 132 and the side wall portion 1312, and further affects the welding reliability between the expansion beam main body 132 and the side wall portion 1312.

[0091] In the above technical solution, by setting the gap T2 between the expansion beam body 132 and the adjacent side wall portion 1312 within the range of 0mm to 8mm, the gap between the expansion beam body 132 and the adjacent side wall portion 1312 can be made more appropriate, which is beneficial for the welding portion 133 to have more reliable welding quality.

[0092] In some embodiments of the present application, reference Fig. 9 The expansion beam joint 131 also includes a reinforcement portion 1313 , which is disposed on a side of the side wall portion 1312 away from the fixing groove 131 a . The reinforcement portion 1313 extends along the length direction of the longitudinal beam 12 and connects the main body portion 1311 and the side wall portion 1312 .

[0093] The reinforcement portion 1313 may refer to a rib structure or a plate structure that can play a reinforcing role. Fig. 9 , the reinforcing portion 1313 is a reinforcing rib. The number of reinforcing portions 1313 provided on the side of each side wall portion 1312 away from the fixing groove 131a may include but is not limited to one or more. Fig. 9 Two reinforcing portions 1313 are provided on a side of each side wall portion 1312 away from the fixing groove 131 a.

[0094] "The reinforcement part 1313 extends along the length direction of the longitudinal beam 12 and connects the main body 1311 and the side wall 1312." The reinforcement part 1313 can serve as an oblique support between the main body 1311 and the side wall 1312, so that the main body 1311, the side wall 1312 and the reinforcement part 1313 can form a structure with high stability, thereby improving the overall strength of the expansion beam joint 131. Through experiments, in the CAE collision simulation model, the expansion beam joint 131 with the above structure can effectively reduce the probability of the joint flipping during a collision.

[0095] In the above technical solution, by configuring the expansion beam joint 131 to also include a reinforcement portion 1313, the reinforcement portion 1313 connects the main body portion 1311 and the side wall portion 1312 to form a stable structure, thereby improving the overall structural strength of the expansion beam joint 131, thereby being able to better support the longitudinal beam 12 when a collision occurs, which is beneficial to improving collision safety.

[0096] In some embodiments of the present application, reference Fig. 9 The portion of the main body 1311 located in the fixing groove 131a is provided with a weight-reducing hole 1311a. In this technical solution, the weight-reducing hole 1311a can reduce the weight of the expansion beam joint 131, facilitate the assembly of the expansion beam joint 131 and the longitudinal beam 12, and also reduce the overall weight of the frame 100, which is conducive to increasing the power of the whole vehicle. Secondly, the weight-reducing hole 1311a can also save the material of the expansion beam joint 131, which can reduce the manufacturing cost.

[0097] In some embodiments of the present application, reference Figures 1 to 5 ,as well as Figure 7 and Figure 8 The chemical cabin 10 further includes an upper cover plate 14 , the upper cover plate 14 is connected to the longitudinal beam 12 , the first cross beam 11 is connected to the upper cover plate 14 , and the first cross beam 11 is bent toward a side away from the upper cover plate 14 to form at least one bent portion 101 .

[0098] The upper cover plate 14 may refer to a top plate component of the vehicle frame 100 and may serve as a floor of the entire vehicle.

[0099] The bent portion 101 may refer to a relatively protruding portion of the first beam 11 after being bent (see Figure 3 ). The bending portion 101 formed by bending the first beam 11 may be, but is not limited to, one, two, three, etc. For example, referring to Figure 3 Two bending portions 101 are formed on the first cross beam 11, so that the cross section of the first cross beam 11 can be M-shaped.

[0100] The connection method of the first cross beam 11 and the upper cover plate 14 can be, but is not limited to, bolt connection, riveting, welding, etc. For example, the first cross beam 11 and the upper cover plate 14 can be connected by spot welding.

[0101] In the above technical solution, at least one bending portion 101 is formed by bending the first cross beam 11 toward a side away from the upper cover plate 14, thereby improving the load capacity of the first cross beam 11 and making the first cross beam 11 have higher strength. Moreover, after the first cross beam 11 and the upper cover plate 14 are connected, a closed cavity structure can be formed, which can also improve the structural strength of the assembly formed by the first cross beam 11 and the upper cover plate 14, thereby improving the reliability of the chemical cabin 10. The above structure can reduce the use of reinforcements while meeting the collision safety requirements, reduce the number of parts of the frame 100, and help reduce the weight of the frame 100, further improving the electric endurance of the whole vehicle.

[0102] In some embodiments of the present application, reference Figure 3The bending parts 101 include at least two, the first beam 11 is located between any two adjacent bending parts 101 to form a straight part 102, the straight part 102 is fitted on the upper cover plate 14, the expansion beam 13 is arranged corresponding to at least one straight part 102, and the chemical cabin 10 also includes a fastener 15, which connects the straight part 102, the upper cover plate 14 and the expansion beam 13.

[0103] The straight portion 102 may refer to a portion of the first beam 11 that is in the shape of a straight plate. The straight portion 102 can fit with the upper cover plate 14, which can improve the installation stability between the first beam 11 and the upper cover plate 14, and make the connection between the first beam 11 and the upper cover plate 14 more reliable. Among them, the straight portion 102 and the edge portions 103 at both ends of the width direction of the first beam 11 can be connected to the upper cover plate 14 by, but not limited to, bolt connection, riveting and welding. Exemplarily, the straight portion 102 and the edge portion 103 are fixedly connected to the upper cover plate 14 by spot welding.

[0104] The fastener 15 may refer to a fixing component used to connect the straight portion 102, the upper cover plate 14 and the expansion beam 13. The fastener 15 may be, but is not limited to, a bolt, a rivet, a pin and the like.

[0105] In the above technical solution, by connecting the straight portion 102, the upper cover plate 14 and the expansion beam 13 with the fastener 15, the first cross beam 11, the upper cover plate 14 and the expansion beam 13 can be directly connected, so that the bonding of the first cross beam 11, the upper cover plate 14 and the expansion beam 13 can be increased, and the strength of the connection area of ​​the first cross beam 11, the upper cover plate 14 and the expansion beam 13 can be improved, which can provide better support in the event of a collision. Moreover, the first cross beam 11, the upper cover plate 14 and the expansion beam 13 are connected by the fastener 15, and the collision force can be dispersed among the three components in the event of a collision, which is conducive to weakening the collision force, improving the collision performance of the chemical cabin 10, and thus improving the collision safety of the frame 100.

[0106] In some embodiments of the present application, reference Figures 1 to 5 ,as well as Figure 7 and Figure 8 The chemical cabin 10 also includes an upper cover plate 14 and a fastener 15 , the upper cover plate 14 is connected to the longitudinal beam 12 , the first cross beam 11 is connected to the upper cover plate 14 , and the fastener 15 is connected to the first cross beam 11 , the upper cover plate 14 and the expansion beam 13 .

[0107] It can be understood that in this solution, the first cross beam 11 can be bent to form the bent portion 101, or the first cross beam 11 can be a non-bent body. For example, when the first cross beam 11 is a non-bent body, the first cross beam 11 can be, but is not limited to, a square tube body, a round tube body, a trapezoidal tube body, and the like.

[0108] In the above technical solution, the first cross beam 11, the upper cover plate 14 and the expansion beam 13 are connected by fasteners 15, thereby improving the strength of the connection area among the first cross beam 11, the upper cover plate 14 and the expansion beam 13, providing better support, thereby improving the collision performance of the chemical cabin 10, and thus improving the collision safety of the frame 100.

[0109] In some embodiments of the present application, the fastener 15 is a threaded fastener, and the first cross beam 11, the upper cover plate 14 and the expansion beam 13 are connected by the FDS process.

[0110] In the above technical solution, the threaded fasteners may refer to screws. The first cross beam 11, the upper cover plate 14 and the expansion beam 13 are connected by the threaded fasteners using the FDS process. The threaded fasteners can connect dissimilar materials, that is, the first cross beam 11, the upper cover plate 14 and the expansion beam 13 can be made of different materials, which can provide more possibilities for the design of the first cross beam 11, the upper cover plate 14 and the expansion beam 13 and reduce costs. Moreover, the first cross beam 11, the upper cover plate 14 and the expansion beam 13 do not need to be pre-drilled, which can also reduce the process steps and improve the assembly efficiency. Moreover, when the threaded fasteners are connected using the FDS process, the heated material can flow around the hole, thereby further improving the connection strength of the first cross beam 11, the upper cover plate 14 and the expansion beam 13.

[0111] In some embodiments of the present application, reference 4 and Figure 5 An adhesive member 16 capable of withstanding strong structural bonding is provided between the expansion beam 13 and the upper cover plate 14 .

[0112] The adhesive 16 may refer to a substance that connects two or more parts or materials together through interfacial adhesion and cohesion and can withstand strong structural bonding. The adhesive may be, but is not limited to, structural adhesive.

[0113] In the above technical solution, the expansion beam 13 and the upper cover plate 14 are connected by an adhesive 16, so that the expansion beam 13 and the upper cover plate 14 can be bonded and fixed, and the connection strength between the expansion beam 13 and the upper cover plate 14 can be effectively improved by cooperating with the fastener 15, which is beneficial to reduce the number of reinforcements while meeting the collision safety requirements, and then reduce the number of body parts, thereby reducing the weight of the frame 100 and improving the power endurance of the whole vehicle.

[0114] In some embodiments of the present application, reference Figure 3 and Fig.10 The first cross beam 11 includes a cross beam joint 111 and a cross beam body 112 . The cross beam joint 111 is connected to the longitudinal beam 12 . The cross beam body 112 is connected to the cross beam joint 111 , and the tensile strength of the cross beam body 112 is greater than the tensile strength of the cross beam joint 111 .

[0115] The beam body 112 may refer to a main body portion of the first beam 11 .

[0116] The cross beam joint 111 may refer to a joint component for connecting the cross beam body 112 and the longitudinal beam 12. The shapes of the cross beam body 112 and the cross beam joint 111 may be, but not limited to, U-shaped, rectangular, circular, M-shaped, and the like.

[0117] The beam body 112 and the beam joint 111 may be made of the same or different materials, but the tensile strength of the material of the beam body 112 is greater than the tensile strength of the material of the beam joint 111. Exemplarily, the beam body 112 and the beam joint 111 may be made of, but not limited to, ultra-high strength hot-formed steel.

[0118] In the above technical solution, by configuring the first crossbeam 11 to include a crossbeam joint 111 and a crossbeam body 112, on the one hand, the first crossbeam 11 can be manufactured in parts, which is beneficial to reducing the manufacturing difficulty of the first crossbeam 11, thereby reducing the manufacturing cost, and the crossbeam joint 111 can be first assembled to the longitudinal beam 12, and then the crossbeam body 112 can be assembled, thereby reducing the probability of the first crossbeam 11 being unable to be assembled to the longitudinal beam 12 due to assembly errors, thereby reducing the difficulty of assembling the first crossbeam 11 and the longitudinal beam 12. Since the tensile strength of the cross beam body 112 is greater than the tensile strength of the cross beam joint 111, when a collision occurs, during the process in which the collision force of the longitudinal beam 12 is transmitted from the cross beam joint 111 to the cross beam body 112, there is a greater probability that the cross beam joint 111 will deform before the cross beam body 112 to play a buffering and energy-absorbing role, thereby reducing the probability that the longitudinal beam 12 will be greatly deformed due to the greater supporting stiffness of the cross beam body 112 on the longitudinal beam 12. This can better balance the deformation of the longitudinal beam 12 and the impact energy that the frame 100 ultimately bears, which is beneficial to improving the collision safety of the frame 100.

[0119] In some embodiments of the present application, reference Fig.10 The cross beam joint 111 is provided with a collapsed portion 104 , and the extending direction of the collapsed portion 104 is perpendicular to the length direction of the cross beam body 112 .

[0120] The collapsed portion 104 may refer to a groove or a hole structure provided on the beam joint 111 .

[0121] refer to Fig.10 The length direction of the beam body 112 may refer to the second direction Y, and the extension direction of the collapse portion 104 may refer to the first direction X, wherein the length of the collapse portion 104 may be equal to the width of the beam body 112, or the length of the collapse portion 104 may be less than the width of the beam body 112.

[0122] In the above technical solution, when the cross beam joint 111 is subjected to a large collision force, the crush portion 104 can deform before the cross beam joint 111 and play a role in buffering and energy absorption first. That is to say, by providing the crush portion 104, the overall buffering and energy absorption effect of the cross beam joint 111 can be improved, thereby reducing the probability of the cross beam body 112 having a large supporting stiffness on the longitudinal beam 12, which can further improve the collision safety of the frame 100.

[0123] In some embodiments of the present application, the first cross beam 11 is a seat cross beam, and the longitudinal beam 12 is a door sill beam.

[0124] It can be understood that the chemical cabin 10 can be a front floor assembly part of the vehicle frame 100. In this technical solution, by setting the first cross beam 11 as a seat cross beam and the longitudinal beam 12 as a threshold beam, the collision performance of the driver's position in the vehicle frame 100 can be improved, thereby improving the safety of the driver in the case of a side collision.

[0125] According to the vehicle frame 100 provided in the embodiment of the present application, the vehicle frame 100 includes a chemical cabin 10 , which may be the location of the front floor of the entire vehicle. The chemical cabin 10 includes a cross beam 1 , a longitudinal beam 12 , an expansion beam 13 , and an upper cover plate 14 .

[0126] The cross beam 1, the longitudinal beam 12 and the upper cover plate 14 are connected by FDS and constitute a chemical cabin frame assembly. There are multiple cross beams 1, and one of them constitutes a seat cross beam, and the longitudinal beam 12 is a threshold beam.

[0127] The seat crossbeam includes a seat crossbeam body and a seat crossbeam joint, and the seat crossbeam body and the seat crossbeam joint are connected by spot welding. The seat crossbeam body and the seat crossbeam joint are both made of ultra-high strength thermoformed materials. The seat crossbeam body and the seat crossbeam joint are in an M-shaped cross section, and the three matching surfaces of the M-shaped cross section of the seat crossbeam body are fitted with the upper cover plate 14 and connected by spot welding to form a closed cross section with good cross-sectional strength.

[0128] The expansion beam 13 is arranged on the lower side of the upper cover plate 14 and connected to the threshold beam through four core-pulling rivets 17. The expansion beam 13 includes an expansion beam joint 131 and an expansion beam body 132. A U-shaped groove is formed on the expansion beam joint 131. The expansion beam body 132 can be assembled along the third direction Z and inserted into the U-shaped groove of the expansion beam joint 131. Then, the expansion beam body 132 is connected to the expansion beam joint 131 through two arc weldings. The expansion beam 13 can form a complete CTC chemical cabin assembly with the chemical cabin frame assembly for battery cell packaging.

[0129] The expansion beam joint 131 is a low-pressure casting. The expansion beam joint 131 includes a main body 1311 and two side wall parts 1312. The two side wall parts 1312 are connected to the main body 1311 to form a U-shaped groove. Among them, the gap between the main body 1311 and the expansion beam body 132 in the second direction Y is 3mm. At the moment of collision, the expansion beam joint 131 and the expansion beam body 132 are ensured to quickly contact each other to resist the impact of side collision and column collision. The gap between the side wall part 1312 and the expansion beam body 132 in the first direction X is 0.5mm to ensure the quality of arc welding. The expansion beam joint 131 is provided with 4 core-pulling holes that match the threshold beam. And reinforcing ribs are provided between the main body 1311 and the side wall part 1312, which further improves the structural strength and rigidity of the parts, and effectively resists the folding of the joint at the moment of column collision in the CAE collision simulation model. The main body 1311 is provided with a weight-reducing hole 1311a, which can optimize the weight reduction of the parts on the basis of meeting the requirements of side collision and column collision.

[0130] Before the expansion beam body 132 is assembled and inserted into the U-shaped groove of the expansion beam joint 131 in the third direction Z, structural adhesive is pre-coated on the contact surface where the upper cover plate 14 matches the expansion beam 13. After arc welding of the expansion beam body 132 is completed, the expansion beam 13 is connected to the upper cover plate 14 through FDS at the middle part of the M section of the seat cross beam.

[0131] In the vehicle frame 100 of the above structure, the structural design of the threshold side impact solution of the entire chemical cabin 10 has a small number of parts and a compact structure, which maximizes the optimization of the battery cell layout space of the entire vehicle and provides effective lateral support, which can better resist the impact of side collisions and pillar collisions and meet the requirements of collision safety regulations.

[0132] In a second aspect, an embodiment of the present application further provides a vehicle, comprising the vehicle frame 100 as described above.

[0133] In the above technical solution, the frame 100 uses a relatively small number of parts while meeting the side collision safety requirements, and the internal space of the chemical cabin 10 is larger, so that more battery cells can be arranged, which is beneficial to reducing the number of parts of the vehicle body and increasing the power of the entire vehicle.

[0134] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0135] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A frame, characterized in that: include: A chemical cabin, comprising a cross beam, a longitudinal beam and an expansion beam, wherein there are multiple cross beams connected to the longitudinal beam, at least one of the multiple cross beams constitutes a first cross beam, the expansion beam extends along the length direction of the first cross beam and is connected to the longitudinal beam, the expansion beam is arranged close to the first cross beam, and the orthographic projection of the expansion beam on the horizontal plane is located within the orthographic projection of the first cross beam on the horizontal plane.

2. The frame according to claim 1, characterized in that: The expansion beam comprises: An expansion beam joint, the expansion beam joint is connected to the longitudinal beam, and a fixing groove is provided on a side away from the longitudinal beam; An expansion beam body, part of which is arranged in the fixing groove and connected to the expansion beam joint.

3. The frame according to claim 2, characterized in that: The expansion beam joint comprises: a main body portion, the main body portion being connected to the longitudinal beam; There are two side wall parts, which are arranged at intervals along the length direction of the longitudinal beam and connected to the main body. The two side wall parts and the main body jointly define the fixing groove.

4. The frame according to claim 3, characterized in that: A gap between the expansion beam body and the main body portion is T1, wherein 3mm≤T1≤5mm.

5. The frame according to claim 3, characterized in that: The expansion beam body and the side wall portion are connected by welding to form a welding portion, and the welding portion extends along the length direction of the side wall portion.

6. The frame according to claim 5, characterized in that: A gap between the expansion beam body and the adjacent side wall portion is T2, wherein 0 mm ≤ T2 ≤ 0.8 mm.

7. The frame according to claim 3, characterized in that: The expansion beam joint also includes: A reinforcing portion is arranged on a side of the side wall portion away from the fixing groove, the reinforcing portion extends along the length direction of the longitudinal beam and connects the main body portion and the side wall portion.

8. The frame according to claim 3, characterized in that: A weight-reducing hole is provided on a portion of the main body located in the fixing groove.

9. The frame according to claim 1, characterized in that: The chemical cabin further includes an upper cover plate, the upper cover plate is connected to the longitudinal beam, the first cross beam is connected to the upper cover plate, and the first cross beam is bent toward a side away from the upper cover plate to form at least one bent portion.

10. The frame according to claim 9, characterized in that: The bending parts include at least two, the first cross beam is located between any two adjacent bending parts to form a straight part, the straight part is fitted on the upper cover plate, the expansion beam is arranged corresponding to at least one of the straight parts, and the chemical cabin also includes: a fastener, which connects the straight part, the upper cover plate and the expansion beam.

11. The frame according to claim 1, characterized in that: The chemical cabin further includes: an upper cover plate and fasteners, wherein the upper cover plate is connected to the longitudinal beam, the first cross beam is connected to the upper cover plate, and the fasteners connect the first cross beam, the upper cover plate and the expansion beam.

12. The frame according to claim 10, characterized in that: The fastener is a threaded fastener, and the first cross beam, the upper cover plate and the expansion beam are connected by an FDS process.

13. A frame according to any one of claims 9 to 12, characterized in that An adhesive member capable of withstanding strong structural bonding is arranged between the expansion beam and the upper cover plate.

14. A frame according to any one of claims 1 to 12, characterized in that The first crossbeam comprises: A cross beam joint, the cross beam joint connecting the longitudinal beam; A crossbeam body is connected to the crossbeam joint, and the tensile strength of the crossbeam body is greater than the tensile strength of the crossbeam joint.

15. The frame according to claim 14, characterized in that The cross beam joint is provided with a collapsed portion, and the extending direction of the collapsed portion is perpendicular to the length direction of the cross beam body.

16. A vehicle frame according to any one of claims 1 to 12, characterized in that The first cross beam is a seat cross beam, and the longitudinal beam is a door sill beam.

17. A vehicle, characterized in that: Comprising a frame as claimed in any one of claims 1 to 16.

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