Vehicle frame and vehicle

Abstract

Disclosed in the present application are a vehicle frame and a vehicle. The vehicle frame is provided with a front end and a rear end which are opposite to each other, wherein the front end and the rear end are configured for the mounting of wheels, respectively, and at least one position of the vehicle frame between the front end and the rear end is bent downwards to form a recessed portion configured to accommodate at least part of a battery. The technical solution provided in the present application can improve the driving performance of the vehicle.

Description

Frame and vehicle CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application No. 202420446198.5, filed on March 7, 2024, entitled “Frame and Vehicle,” and the entire contents of the above application are incorporated herein by reference. Technical Field

[0002] The present application relates to the technical field of new energy vehicles, and in particular to a vehicle frame and a vehicle. Background Art

[0003] New energy vehicles have become an important part of the sustainable development of the vehicle industry due to their energy-saving and environmentally friendly advantages. With the development of new energy vehicles, people's requirements for the cruising range of new energy vehicles are also increasing.

[0004] For new energy vehicles, how to improve the driving performance of the vehicle is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The present application provides a frame and a vehicle, and the technical solution provided in the present application can improve the driving performance of the vehicle.

[0006] In a first aspect, the present application provides a vehicle frame having a front end and a rear end opposite to each other, the front end and the rear end being used to mount wheels respectively, and the frame being bent downward at at least one position between the front end and the rear end to form a recessed portion, the recessed portion being used to accommodate at least a portion of a battery.

[0007] In the above scheme, by providing a downwardly bent recessed portion in the middle of the frame, on the one hand, the frame is partially moved downward to lower the center of gravity of the frame, thereby lowering the center of gravity of the vehicle, and thus improving the vehicle's handling performance; on the other hand, the part of the frame that is partially moved downward can reasonably utilize the height of the battery itself to accommodate at least part of the battery, so that the vehicle with this frame has a suitable ground clearance and a battery of suitable capacity, thereby making the vehicle with this frame have higher passing performance (obstacle crossing performance) and endurance performance, that is, the vehicle has higher driving performance.

[0008] According to some embodiments of the present application, a vehicle frame includes two longitudinal beams, arranged side by side along a first direction. Along a second direction, the longitudinal beams include a first section, a bent section, and a second section, which are sequentially connected. The bent section bends relative to the first and second sections in a third direction, and the bent sections of the two longitudinal beams together form a recessed portion. The second direction is parallel to the direction from the front end to the rear end, and the third direction is the direction of gravity. The first, second, and third directions are mutually perpendicular.

[0009] In the above solution, by providing a downwardly bent and protruding bent section in the middle of the longitudinal beam, on the one hand, the center of gravity of the frame can be effectively lowered, and on the other hand, at least part of the battery can be accommodated, so that the vehicle with the frame has a suitable ground clearance and a battery of suitable capacity, thereby making the vehicle with the frame have higher handling performance, passability and endurance performance, that is, the vehicle has higher driving performance.

[0010] According to some embodiments of the present application, along the second direction, the bent section includes a first connecting section, a widening section, and a second connecting section arranged in a mutually aligned manner. Along the third direction, the widening section protrudes from the first and second sections. The end of the first connecting section facing away from the widening section is connected to the first section, and the end of the second connecting section facing away from the widening section is connected to the second section. Along the first direction, the widening section protrudes outward relative to the first and second connecting sections. The widening sections of the two longitudinal beams together form a receiving cavity for accommodating at least a portion of the battery.

[0011] In the above solution, by providing an outwardly protruding widened section in the bending section to form a larger accommodating cavity, the frame can carry more or larger batteries, so that the vehicle with the frame has a longer cruising range and improves the vehicle's endurance performance.

[0012] According to some embodiments of the present application, the first connecting segment is arc-shaped, and the widening segment is transitionally connected to the first segment through the first connecting segment; the second connecting segment is arc-shaped, and the widening segment is transitionally connected to the second segment through the second connecting segment.

[0013] In the above solution, by setting the first connecting section and the second connecting section to be arc-shaped, the first connecting section, the widened section and the second connecting section can have a smooth transition, thereby reducing the risk of stress concentration causing the bent section to be easily broken by impact, making the frame more reliable, and thus making the vehicle more reliable.

[0014] According to some embodiments of the present application, along the second direction, the widening section includes a first straight section, a second straight section, and a third straight section arranged in a mutually aligned manner. Along the first direction, the first straight section protrudes outward from the first connecting section, one end of the first straight section is connected to the first connecting section, and the other end of the first straight section is connected to the second straight section. Along the first direction, the third straight section protrudes outward from the second connecting section, one end of the third straight section is connected to the second connecting section, and the other end of the third straight section is connected to the second straight section.

[0015] In the above scheme, by setting the first straight section, the second straight section and the third straight section, the cavity shape of the accommodating cavity can be made regular and square, so that the accommodating cavity can effectively accommodate the battery, which is beneficial to improving the battery space rate and improving the vehicle's endurance performance.

[0016] According to some embodiments of the present application, the widening section also includes a third connecting section and a fourth connecting section. The third connecting section is arc-shaped, and the first straight section is transitionally connected to the second straight section through the third connecting section. The fourth connecting section is arc-shaped, and the third straight section is transitionally connected to the second straight section through the fourth connecting section.

[0017] In the above solution, by providing the third connecting section and the fourth connecting section, the first straight section, the second straight section and the third straight section can be smoothly transitioned, reducing the risk of stress concentration causing the widened section to be easily broken by impact, making the frame more reliable, and thus making the vehicle more reliable.

[0018] According to some embodiments of the present application, along the first direction, the maximum distance between the widened sections of two longitudinal beams is not less than 2000 mm and not more than 2500 mm.

[0019] In the above solution, by setting the maximum distance between the two widening sections to no less than 2000mm, the width of the accommodating cavity can meet the battery size requirements, allowing for the two longitudinal beams to accommodate larger or more batteries, thereby improving the vehicle's endurance performance. By setting the maximum distance between the two widening sections to no more than 2500mm, the impact of the excessive spacing between the two longitudinal beams on the vehicle width can be reduced, meeting the vehicle's driving requirements. To this end, in some embodiments of the present application, by setting the maximum distance between the two widening sections to no less than 2000mm and no more than 2500mm, both the vehicle's endurance performance and the vehicle width requirements can be taken into account.

[0020] According to some embodiments of the present application, the first section, the bending section, and the second section are integrally formed.

[0021] In the above solution, the longitudinal beam is formed through an integrated molding process to have greater strength and rigidity, which can effectively improve the torsional resistance of the longitudinal beam, thereby increasing the reliability of the frame and the reliability of the vehicle.

[0022] According to some embodiments of the present application, along the third direction, the first section has a first surface, the bent section has a second surface, and the second section has a third surface, and the first, second, and third surfaces are arranged on the same side. Along the third direction, the maximum distance between the second surface and the first surface is no less than 300 mm and no more than 400 mm. The maximum distance between the second surface and the third surface is no less than 300 mm and no more than 400 mm.

[0023] In the above solution, the maximum distance between the second surface and the first surface can be regarded as the degree of downward bending of the bending section. By setting the maximum distance between the second surface and the first surface to no less than 300mm, the center of gravity of the frame can be effectively lowered, thereby lowering the center of gravity of the vehicle, thereby effectively improving the vehicle's handling performance, allowing for more extreme maneuvers. By setting the maximum distance between the second surface and the first surface to no more than 400mm, the vehicle can have a higher ground clearance, thereby providing better passability and obstacle-crossing performance. To this end, in some embodiments of the present application, by setting the maximum distance between the second surface and the first surface to no less than 300mm and no more than 400mm, the vehicle's handling performance, passability, and obstacle-crossing performance can be taken into account.

[0024] According to some embodiments of the present application, the vehicle frame further includes a mounting member, which is disposed in the recessed portion, and the mounting member is used to detachably dispose the battery in the recessed portion.

[0025] In the above scheme, by arranging a mounting part in the recessed portion, the battery can be detachably assembled in the recessed portion, so that the vehicle with the frame has a battery replacement function, so that the power loss of the vehicle during driving can be replenished in time by battery replacement, thereby effectively improving the vehicle's endurance performance.

[0026] According to some embodiments of the present application, the recess has an opening, the direction of the opening is parallel to the third direction, and the opening allows the battery to enter or exit the recess.

[0027] In the above solution, by providing an opening, the battery can be installed on the frame from the bottom or top of the frame, making the vehicle's battery replacement efficiency high and meeting the vehicle's battery replacement needs. In some embodiments, such as in a heavy truck battery replacement scenario, by providing a trench at the battery replacement site, the battery can be replaced from the bottom of the heavy truck when it drives into the trench. In some embodiments, the frame is the frame of a towed vehicle, and when there is no object above the frame, the battery can be replaced from the top.

[0028] According to some embodiments of the present application, the vehicle frame further includes a connector, which is disposed in the recessed portion and is configured to connect to the battery so that the battery is in electrical or fluid communication with the vehicle end.

[0029] In the above solution, a connector is provided in the recessed portion so that the vehicle frame can effectively perform battery replacement operations, and the battery and the vehicle end can be efficiently electrically or fluidically connected.

[0030] In a second aspect, some embodiments of the present application provide a vehicle, comprising a battery and the vehicle frame provided in the first aspect, wherein the battery is connected to the vehicle frame, and at least a portion of the battery is accommodated in the recessed portion.

[0031] In the above solution, since the vehicle frame has a downwardly bent recessed portion, on the one hand, the vehicle frame is partially moved downward to lower the center of gravity of the frame, thereby lowering the center of gravity of the vehicle; on the other hand, the portion of the vehicle frame that is partially moved downward can reasonably utilize the height of the battery itself to accommodate at least part of the battery, so that the vehicle has a suitable ground clearance and a battery of suitable capacity, thereby making the vehicle's handling performance, passability and endurance performance higher, that is, the vehicle has higher driving performance.

[0032] According to some embodiments of the present application, the battery is detachably connected to the frame.

[0033] In the above scheme, by setting the battery to be detachably connected to the frame, the vehicle has a battery replacement function, so that the power loss of the vehicle during driving can be replenished in time by battery replacement, thereby effectively improving the vehicle's endurance performance.

[0034] According to some embodiments of the present application, the battery does not protrude from the vehicle frame in a direction opposite to the direction of gravity.

[0035] In the above solution, the middle part of the frame is bent downward to form a recessed portion that can accommodate the battery, and the degree of downward bending is such that the battery does not exceed the upper wing of the frame. This allows more or larger batteries to be loaded as much as possible while effectively lowering the center of gravity of the vehicle, thereby improving the vehicle's handling performance and endurance performance.

[0036] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 relevant drawings can be obtained based on these drawings without creative work.

[0038] FIG1 is a schematic structural diagram of a vehicle in some embodiments of the present application;

[0039] FIG2 is a perspective view of a frame in some embodiments of the present application;

[0040] FIG3 is a top view of a frame in some embodiments of the present application;

[0041] FIG4 is a side view of a frame in some embodiments of the present application;

[0042] FIG5 is a schematic diagram of a frame and a battery in some embodiments of the present application;

[0043] FIG6 is a schematic diagram of a vehicle frame in some embodiments of the present application;

[0044] FIG7 is a schematic diagram of a frame in some other embodiments of the present application;

[0045] FIG8 is a schematic diagram of a vehicle in some embodiments of the present application.

[0046] Icons: 100-frame; 101-front end; 102-rear end; 103-recessed portion; 1030-opening; 10-longitudinal beam; 11-first section; 110-first surface; 12-bent section; 120-first connecting section; 121-widening section; 1210-first straight section; 1211-second straight section; 1212-third straight section; 1213-third connecting section; 1214-fourth connecting section; 122-second connecting section; 123-second surface; 124-reinforcement; 13-second section; 130-third surface; 20-cross beam; 30-mounting part; 31-mounting plate; 32-battery exchange connector; 40-connector; 1000-vehicle; 200-battery; 300-controller; 400-motor; x-first direction; y-second direction; z-third direction. DETAILED DESCRIPTION

[0047] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. 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" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" 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-secondary relationship.

[0049] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0051] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0052] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0053] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are housed in the case.

[0054] In some embodiments, the battery cells may be secondary batteries, which are batteries that can be recharged to activate their active materials after discharge and continue to be used. The battery cells may be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, and the like, although this disclosure is not intended to limit this.

[0055] Currently, new energy vehicles include a frame and a battery. The functions of the frame may include supporting and connecting the various assemblies of the vehicle, keeping the assemblies in a relatively correct position, and bearing various loads inside and outside the vehicle. In some embodiments, when applied to ordinary passenger cars or heavy trucks, the frame may be a frame-type structure spanning the front and rear axles of the vehicle, commonly known as a beam, which is the base of the vehicle. In other embodiments, when applied to a trailer, the frame may be a solid metal structure used to support and fix the various components of the trailer, and the front and rear ends of the frame may be directly equipped with wheels to enable it to be towed.

[0056] The driving performance of new energy vehicles may include handling performance, endurance performance, passability (obstacle crossing performance), etc. For new energy vehicles, how to improve the driving performance of the vehicle is a technical problem that needs to be solved urgently.

[0057] For new energy vehicles, the battery is typically mounted on the vehicle frame. This high ground clearance keeps the battery away from the ground, reducing the impact of bottom impact on the battery. However, this high ground clearance results in a higher center of gravity, affecting the vehicle's handling.

[0058] In view of this, in order to lower the center of gravity of the vehicle and improve the handling performance of the vehicle, some embodiments of the present application provide a frame, which has a front end and a rear end relative to each other, and the front end and the rear end are respectively used to install wheels. The frame is bent downward at at least one position between the front end and the rear end to form a recessed portion, and the recessed portion is used to accommodate at least part of the battery.

[0059] In the above solution, by providing a downwardly bent recessed portion in the middle portion of the frame, on the one hand, the frame is partially moved downward to lower the center of gravity of the frame, thereby lowering the center of gravity of the vehicle; on the other hand, the portion of the frame that is partially moved downward can reasonably utilize the height of the battery itself to accommodate at least part of the battery, so that the vehicle with the frame has a suitable ground clearance and a battery of suitable capacity, thereby making the vehicle with the frame have higher handling performance, passability and endurance performance, that is, the vehicle has higher driving performance.

[0060] The vehicle frame disclosed in the embodiments of the present application can be installed in, but is not limited to, a frame of a passenger vehicle, a frame of a commercial freight vehicle, or a frame of a vehicle of other nature. The vehicle disclosed in the embodiments of the present application can be used in, but is not limited to, a frame of a passenger vehicle, a frame of a commercial freight vehicle, or a frame of a vehicle of other nature.

[0061] Please refer to FIG1 , which is a schematic diagram of the structure of a vehicle in some embodiments of the present application. Vehicle 1000 may be a new energy vehicle, such as a pure electric vehicle, a hybrid electric vehicle with a swappable battery, or an extended-range electric vehicle with a swappable battery. The vehicle includes a battery 200 . Battery 200 can be used to power the vehicle. For example, battery 200 can serve as an operating power source for vehicle 1000 and be used in the circuit system of vehicle 1000 , such as for the power requirements of vehicle 1000 during startup, navigation, and operation.

[0062] The vehicle 1000 may also include a controller 300 and a motor 400. The controller 300 is used to control the battery 200 to provide power to the motor 400, for example, to meet the power requirements for starting, navigating, and driving the vehicle 1000. In some embodiments of the present application, the battery 200 can serve not only as the vehicle's operating power source, but also as the vehicle's driving power source, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle. In some embodiments, the vehicle 1000 also includes a frame 100. The frame 100 can be a frame-type structure that spans the front and rear axles of the vehicle, commonly known as a beam, and is the base of the vehicle. The functions of the frame 100 may include supporting and connecting the various assemblies of the vehicle, ensuring that the assemblies maintain a relatively correct position, and bearing various loads inside and outside the vehicle. The battery 200 can be indirectly mounted on the frame 100 via a bracket, or the battery 200 can be directly mounted on the frame 100 via a mount 30, a connector, or other structural members. In other embodiments, a vehicle includes a vehicle body and a tractor towed to the rear of the vehicle body. The vehicle body provides driving force to tow the tractor. The tractor includes a frame 100 and wheels. The front and rear ends 102 of the frame 100 are rigidly connected to the wheels or connected to the wheels via a suspension. The battery 200 is mounted on the frame 100 of the tractor. The battery 200 can be indirectly mounted on the frame 100 via a bracket, or directly mounted on the frame 100 of the tractor via a mounting member 30, a connector, or other structural member.

[0063] According to some embodiments of the present application, a vehicle frame 100 is provided. Referring to Figures 2-5 , Figure 2 is a perspective view of the vehicle frame 100 in some embodiments of the present application, Figure 3 is a top view of the vehicle frame 100 in some embodiments of the present application, Figure 4 is a side view of the vehicle frame 100 in some embodiments of the present application, and Figure 5 is a schematic diagram of the vehicle frame 100 and battery 200 in some embodiments of the present application.

[0064] The frame 100 has a front end 101 and a rear end 102 opposite to each other, and the front end 101 and the rear end 102 are respectively used to install wheels. The frame 100 is bent downward at at least one position between the front end 101 and the rear end 102 to form a recessed portion 103, and the recessed portion 103 is used to accommodate at least a portion of the battery 200.

[0065] The vehicle frame 100 is the main structure of the vehicle. Its functions include supporting and connecting the various assemblies of the vehicle, ensuring that the assemblies maintain relative correct positioning, and bearing various loads inside and outside the vehicle. In some embodiments, the length of the frame 100 is parallel to the length of the vehicle. Along the length of the frame 100, the frame 100 has a front end 101 and a rear end 102 that are opposite each other. Wheels may be directly or indirectly mounted on the front end 101 and rear end 102 of the frame 100. Exemplarily, the front end 101 of the frame 100 is mounted with a wheel via a front suspension, while the rear end 102 of the frame 100 is mounted with a rear suspension. In another exemplary embodiment, the front end 101 of the frame 100 is rigidly connected to the wheel, while the rear end 102 of the frame 100 is rigidly connected to the wheel. In some embodiments, the front end 101 and rear end 102 of the frame 100 may be provided with holes for mounting wheels. In some embodiments, the vehicle frame 100 includes a support beam structure. For example, the vehicle frame 100 includes two longitudinal beams 10, which are arranged side by side and fixedly connected by a cross beam 20. For another example, the vehicle frame 100 is an integral structure or a single beam structure.

[0066] “The frame 100 is bent downward at at least one position between the front end 101 and the rear end 102 to form a recessed portion 103, and the recessed portion 103 is used to accommodate at least a portion of the battery 200” can be understood as follows: the frame 100 generally extends in a horizontal direction to mount wheels at the front end 101 and the rear end 102 to enable the vehicle to move; at least one position between the front end 101 and the rear end 102 of the frame 100 can be bent toward the ground to form a recessed area, which is defined as the recessed portion 103. The recessed area can accommodate at least a portion of the battery 200. Since a local portion of the frame 100 is offset downward, the center of gravity of the frame 100 is correspondingly offset downward.

[0067] In some embodiments, along the direction of gravity, the upper surface of the frame 100 is defined as an upper wing, and the lower surface of the frame 100 is defined as a lower wing. Corresponding to the position of the recessed portion 103, the upper wing is bent downward to be below the highest position of the frame 100, and the corresponding lower wing is also bent downward.

[0068] In some embodiments, the area between the front end 101 and the rear end 102 of the frame 100 is referred to as the middle portion of the frame 100. One, two, or more recessed portions 103 may be provided in the middle portion of the frame 100. When there are multiple recessed portions 103, each of the recessed portions 103 can accommodate at least a portion of a corresponding battery 200, or the multiple recessed portions 103 can collectively accommodate at least a portion of a single battery 200. In some embodiments, a single recessed portion 103 is provided between the front end 101 and the rear end 102 of the frame 100. After the battery 200 is loaded onto the frame 100, the battery 200 is accommodated in the recessed portion 103 and does not exceed the highest position of the frame 100.

[0069] In some embodiments, the vehicle frame 100 includes two longitudinal beams 10 arranged side by side. The middle portion of the longitudinal beams 10 is bent downward to form a bent section 12. The bent sections 12 of the two longitudinal beams 10 together form a recessed portion 103. In some embodiments, when the vehicle frame 100 is a single beam structure, the middle portion of the single beam structure is bent downward to form the recessed portion 103.

[0070] In the above solution, by providing a downwardly bent recessed portion 103 in the middle portion of the frame 100, on the one hand, the frame 100 is partially moved downward to lower the center of gravity of the frame 100, thereby lowering the center of gravity of the vehicle; on the other hand, the partially downwardly moved portion of the frame 100 can reasonably utilize the height of the battery 200 itself to accommodate at least part of the battery 200, so that the vehicle with the frame 100 has an appropriate ground clearance and a battery 200 of appropriate capacity, thereby making the vehicle with the frame 100 have higher handling performance, passability and endurance performance, that is, the vehicle has higher driving performance.

[0071] According to some embodiments of the present application, referring to Figures 2-4 , a vehicle frame 100 includes two longitudinal beams 10, which are arranged side by side along a first direction x. Along a second direction y, the longitudinal beams 10 include a first section 11, a bent section 12, and a second section 13, which are sequentially connected. The bent section 12 bends relative to the first and second sections 11, 13 in a third direction z. The bent sections 12 of the two longitudinal beams 10 collectively form a recessed portion 103. The second direction y is parallel to the front end 101 and points toward the rear end 102. The third direction z is the direction of gravity. The first direction x, the second direction y, and the third direction z are all perpendicular to each other.

[0072] In some embodiments, the first direction x may be the vehicle width, the second direction y may be the vehicle length, and the third direction z may be the vehicle height. The third direction z may also be considered the gravity direction. The third direction z may also be considered the vertical downward direction.

[0073] The longitudinal beam 10 may be a main structure of the vehicle frame 100. The two longitudinal beams 10 are spaced apart and arranged side by side along a first direction x, with a cross beam 20 disposed between the two longitudinal beams 10. The cross beam 20 connects the two longitudinal beams 10 at both ends in the first direction x.

[0074] Referring to Figures 2-4 , along the second direction y, the longitudinal beam 10 includes a first section 11, a bent section 12, and a second section 13, which are sequentially connected. The end of the first section 11 facing away from the bent section 12 can be mounted on a wheel, and the end of the second section 13 facing away from the bent section 12 can also be mounted on a wheel. The bent section 12 is located between the first section 11 and the second section 13 and bends relative to the first and second sections 11 and 13 in the third direction z. In other words, a portion of the bent section 12 protrudes beyond the first and second sections 11 and 13 in the third direction z. The bent section 12 can have a multi-segment structure. For example, the bent section 12 can include two transition sections and a main section. The main section is generally parallel to the first and second sections 11 and 13, and is located between the two transition sections. The main section connects the first and second sections 11 and 13 via the transition section, protruding beyond the first and second sections 11 and 13 in the third direction z. In some embodiments, the transition section can be arcuate to provide a smooth transition between the main section and the first and second sections 11 and 13. In other embodiments, the transition section may be flat, so that the main section transitions to the first section 11 or the second section 13 in an angular shape.

[0075] In the above solution, by providing a downwardly bent and protruding bent section 12 in the middle of the longitudinal beam 10, on the one hand, the center of gravity of the frame 100 can be effectively lowered, and on the other hand, at least part of the battery 200 can be accommodated, so that the vehicle with the frame 100 has a suitable ground clearance and a battery 200 of suitable capacity, thereby making the vehicle with the frame 100 have higher handling performance, passability and endurance performance.

[0076] According to some embodiments of the present application, please refer to Figures 2, 3, and 6. Figure 6 is a schematic diagram of the vehicle frame 100 in some embodiments of the present application. Along the second direction y, the bent section 12 includes a first connecting section 120, a widening section 121, and a second connecting section 122 arranged in a mutually arranged manner. Along the third direction z, the widening section 121 protrudes from the first section 11 and the second section 13. The end of the first connecting section 120 facing away from the widening section 121 is connected to the first section 11, and the end of the second connecting section 122 facing away from the widening section 121 is connected to the second section 13. Along the first direction x, the widening section 121 protrudes outward relative to the first connecting section 120 and the second connecting section 122. The widening sections 121 of the two longitudinal beams 10 jointly form a receiving cavity for accommodating at least a portion of the battery 200.

[0077] The bending section 12 is a multi-section structure. The widening section 121 is located between the first connecting section 120 and the second connecting section 122 . The widening section 121 is connected to the first section 11 through the first connecting section 120 , and is connected to the second section 13 through the second connecting section 122 .

[0078] The phrase "along the first direction x, the widening section 121 protrudes outward relative to the first connecting section 120 and the second connecting section 122" can be understood as meaning that the widening section 121 of one longitudinal beam 10 protrudes in a direction away from the other longitudinal beam 10 relative to the first connecting section 120 and the second connecting section 122 of the longitudinal beam 10. For example, in the vehicle frame 100, the widening sections 121 of the longitudinal beams 10 are outwardly flared, and along the first direction x, the maximum spacing between the widening sections 121 of the two longitudinal beams 10 is greater than the maximum spacing between the first connecting sections 120 of the two longitudinal beams 10, and the maximum spacing between the widening sections 121 of the two longitudinal beams 10 is greater than the maximum spacing between the second connecting sections 122 of the two longitudinal beams 10.

[0079] The phrase "the widened sections 121 of the two longitudinal beams 10 jointly form a receiving cavity for accommodating at least a portion of the battery 200" can be understood as meaning that the widened portion of the frame 100 can form a larger receiving cavity capable of accommodating at least a portion of the battery 200. For example, the entire battery 200 is located in the recessed portion 103. Along the third direction z, a portion of the battery 200 may be located between the two longitudinal beams 10 and within the receiving cavity, while another portion of the battery 200 is located above the widened section 121.

[0080] In the above solution, by providing an outwardly protruding widened section 121 on the bending section 12 to form a larger accommodating cavity, the frame 100 can carry more or larger batteries 200, so that the vehicle with the frame 100 has a longer cruising range and improves the vehicle's endurance performance.

[0081] According to some embodiments of the present application, please refer to Figure 4, the first connecting section 120 is arc-shaped, and the widening section 121 is transitionally connected to the first section 11 through the first connecting section 120, and the second connecting section 122 is arc-shaped, and the widening section 121 is transitionally connected to the second section 13 through the second connecting section 122.

[0082] The first connecting segment 120 connects the first segment 11 and the widening segment 121 to compensate for the distance difference between the first segment 11 and the widening segment 121 in the third direction z. In some embodiments, the first connecting segment 120 is arc-shaped to provide a smooth transition between the first segment 11 and the widening segment 121. The phrase "the first connecting segment 120 is arc-shaped" can be understood as meaning that the first connecting segment 120 is a non-straight segment-like structure, and its outer contour may be curved or arc-shaped.

[0083] The second connecting segment 122 connects the second segment 13 and the widening segment 121 to compensate for the distance difference between the second segment 13 and the widening segment 121 in the third direction z. In some embodiments, the second connecting segment 122 is arc-shaped to provide a smooth transition between the second segment 13 and the widening segment 121. The phrase "the second connecting segment 122 is arc-shaped" can be understood as meaning that the second connecting segment 122 is a non-straight segment-like structure, and its outer contour may be curved or arc-shaped.

[0084] In the above solution, by setting the first connecting section 120 and the second connecting section 122 to be arc-shaped, the first connecting section 120, the widening section 121 and the second connecting section 122 can have a smooth transition, thereby reducing the risk of stress concentration causing the bending section 12 to be easily broken by impact, so that the frame 100 has higher reliability, and thus the vehicle has higher reliability.

[0085] In some other embodiments of the present application, the first connecting section 120 and the second connecting section 122 may also be straight.

[0086] According to some embodiments of the present application, referring to FIG. 3 , along the second direction y, the widening section 121 includes a first straight section 1210, a second straight section 1211, and a third straight section 1212, which are arranged one above the other. Along the first direction x, the first straight section 1210 protrudes outward from the first connecting section 120, with one end of the first straight section 1210 connected to the first connecting section 120 and the other end of the first straight section 1210 connected to the second straight section 1211. Along the first direction x, the third straight section 1212 protrudes outward from the second connecting section 122, with one end of the third straight section 1212 connected to the second connecting section 122 and the other end of the third straight section 1212 connected to the second straight section 1211.

[0087] The widening section 121 has a multi-segment structure. In some embodiments, the widening section 121 includes a first straight section 1210, a second straight section 1211, and a third straight section 1212. The first straight section 1210, the second straight section 1211, and the third straight section 1212 are each straight. For example, the inner surfaces of the first straight section 1210, the second straight section 1211, and the third straight section 1212 are flat. The second straight section 1211 is located between the first straight section 1210 and the third straight section 1212. The second straight section 1211 is connected to the first connecting section 120 via the first straight section 1210, and the second straight section 1211 is connected to the second connecting section 122 via the third straight section 1212. Along the first direction x, the distance between any parts of the second straight sections 1211 of the two longitudinal beams 10 may be greater than the distance between the first sections 11 of the two longitudinal beams 10 and greater than the distance between the second sections 13 of the two longitudinal beams 10 .

[0088] In some embodiments, referring to FIG. 3 , the accommodating cavity formed by a pair of widened sections 121 may be square, and the second straight section 1211 may correspond to the side of the battery 200 , for example, the side of the battery 200 may fit with the inner surface of the second straight section 1211 .

[0089] In the above scheme, by setting the first straight section 1210, the second straight section 1211 and the third straight section 1212, the cavity shape of the accommodating cavity can be made regular and square, so that the accommodating cavity can effectively accommodate the battery 200, which is beneficial to improving the space rate of the battery 200 and improving the vehicle's endurance performance.

[0090] According to some embodiments of the present application, the bending section 12 also includes a third connecting section 1213 and a fourth connecting section 1214. The third connecting section 1213 is arc-shaped, and the first straight section 1210 is transitionally connected to the first connecting section 120 through the third connecting section 1213. The fourth connecting section 1214 is arc-shaped, and the third straight section 1212 is transitionally connected to the second connecting section 122 through the fourth connecting section 1214.

[0091] The third connecting section 1213 connects the first straight section 1210 and the second straight section 1211, thereby providing a smooth transition between the first straight section 1210 and the second straight section 1211. The fourth connecting section 1214 connects the third straight section 1212 and the second straight section 1211, thereby providing a smooth transition between the third straight section 1212 and the second straight section 1211.

[0092] In the above solution, by providing the third connecting section 1213 and the fourth connecting section 1214, the first straight section 1210, the second straight section 1211 and the third straight section 1212 can be smoothly transitioned, thereby reducing the risk of stress concentration causing the widened section 121 to be easily broken by impact, so that the frame 100 has higher reliability, and thus the vehicle has higher reliability.

[0093] In some embodiments, a reinforcement member 124 may be provided between the first straight sections 1210 of the two longitudinal beams 10, connecting the two first straight sections 1210. A reinforcement member 124 may be provided between the third straight sections 1212 of the two longitudinal beams 10, connecting the two third straight sections 1212. The provision of reinforcement member 124 can improve the stability of the accommodating cavity and reduce the risk of fracture of the widened section 121 due to impact.

[0094] According to some embodiments of the present application, along the first direction x, the maximum distance between the widened sections 121 of two longitudinal beams 10 is not less than 2000 mm and not more than 2500 mm.

[0095] In some embodiments, the "maximum distance between the widened sections 121 of two longitudinal beams 10" may be the distance between the second straight sections 1211 of the two longitudinal beams 10. In some embodiments, along the first direction x, the maximum distance between the two widened sections 121 is W, where W satisfies 2000 mm ≤ W ≤ 2500 mm, so that at least a portion of a battery 200 no larger than 2500 mm can be located within the accommodating cavity. In some embodiments, along the first direction x, the maximum distance W between the two widened sections 121 may be 2000 mm, 2100 mm, 2200 mm, 2300 mm, 2400 mm, 2500 mm, or any value in between.

[0096] In the above solution, by setting the maximum distance between the two widening sections 121 to no less than 2000mm, the width of the accommodating cavity can meet the size requirements of the battery 200, allowing the two longitudinal beams 10 to accommodate larger or more batteries 200, thereby improving the vehicle's endurance performance. By setting the maximum distance between the two widening sections 121 to no more than 2500mm, the impact of the excessive spacing between the two longitudinal beams 10 on the vehicle width can be reduced, meeting the vehicle's driving requirements. To this end, in some embodiments of the present application, by setting the maximum distance between the two widening sections 121 to no less than 2000mm and no more than 2500mm, both the vehicle's endurance performance and the vehicle width requirements can be taken into account.

[0097] According to some embodiments of the present application, the first section 11 , the bent section 12 , and the second section 13 are integrally formed.

[0098] In some embodiments, the longitudinal beam 10 can be integrally formed into the first section 11 , the second section 13 , and the downwardly protruding bent section 12 by, for example, compression molding.

[0099] In the above solution, the longitudinal beam 10 is formed by an integral molding process to have greater strength and rigidity, which can effectively improve the torsional resistance of the longitudinal beam 10 , thereby increasing the reliability of the vehicle frame 100 and the reliability of the vehicle.

[0100] According to some embodiments of the present application, referring to FIG. 4 , along a third direction z, the first segment 11 has a first surface 110, the bent segment 12 has a second surface 123, and the second segment 13 has a third surface 130. The first surface 110, the second surface 123, and the third surface 130 are arranged on the same side. Along the third direction z, the maximum distance between the second surface 123 and the first surface 110 is no less than 300 mm and no more than 400 mm, and the maximum distance between the third surface 130 and the second surface 123 is no less than 300 mm and no more than 400 mm.

[0101] In some embodiments, the first surface 110 may be the upper surface of the first segment 11, the second surface 123 may be the upper surface of the bent segment 12, and the third surface 130 may be the upper surface of the second segment 13. The maximum distance from the first surface 110 to the second surface 123 and the maximum distance from the third surface 130 to the second surface 123 may be understood as the depth of the recessed portion 103.

[0102] In some embodiments, the maximum distance H1 between the second surface 123 and the first surface 110 along the third direction z can be 300 mm, 310 mm, 320 mm, 330 mm, 340 mm, ..., 390 mm, 400 mm, or any value between two adjacent values. In some embodiments, the maximum distance H2 between the third surface 130 and the second surface 123 along the third direction z can be 300 mm, 310 mm, 320 mm, 330 mm, 340 mm, ..., 390 mm, 400 mm, or any value between two adjacent values.

[0103] In the above solution, the maximum distance between the second surface 123 and the first surface 110 can be regarded as the degree of downward bending of the bending section 12. By setting the maximum distance between the second surface 123 and the first surface 110 to no less than 300mm, the center of gravity of the frame 100 can be effectively lowered, thereby lowering the center of gravity of the vehicle, thereby effectively improving the vehicle's handling performance, allowing for more extreme maneuvers. By setting the maximum distance between the second surface 123 and the first surface 110 to no more than 400mm, the vehicle can have a higher ground clearance, thereby providing better passability and obstacle-crossing performance. To this end, in some embodiments of the present application, by setting the maximum distance between the second surface 123 and the first surface 110 to no less than 300mm and no more than 400mm, the vehicle's handling performance, passability, and obstacle-crossing performance can be taken into account.

[0104] According to other embodiments of the present application, please refer to Figure 7, which is a schematic diagram of the frame 100 in other embodiments of the present application. The frame 100 also includes a mounting member 30, which is disposed in the recessed portion 103 and is used to detachably mount the battery 200 in the recessed portion 103.

[0105] The mounting member 30 is disposed in the recessed portion 103 , for example, the mounting member 30 is connected to the second straight section 1211 of the longitudinal beam 10 and is located between the second straight sections 1211 of the two longitudinal beams 10 . The mounting member 30 is used to be detachably connected to the battery 200 .

[0106] In some embodiments, the mounting member 30 may include a mounting plate 31 and a battery-exchange connector 32. The mounting plate 31 is located between the two longitudinal beams 10 and connects the two longitudinal beams 10. The battery-exchange connector 32 is provided on the mounting plate 31, and the battery-exchange connector 32 is used to lock the battery 200. The battery 200 may be located above or below the mounting plate 31. Exemplarily, in the third direction z, the mounting plate 31 has a bearing surface, and the bearing surface can bear the battery 200, and the battery-exchange connector 32 is protruded from the bearing surface. In some embodiments, the battery-exchange connector 32 includes but is not limited to a locking member, a screw member or other connecting component for locking with the box of the battery 200.

[0107] In other embodiments, the mounting portion can be a mounting hole formed on the longitudinal beam 10, such as a mounting hole formed on the second straight section 1211, and the battery exchange connector 32 passes through the mounting hole and is locked with the battery 200. Exemplarily, the battery 200 is hoisted from top to bottom in the recessed portion 103, and the battery exchange connector 32 passes through the mounting hole and is connected to the box of the battery 200; another exemplary embodiment, the battery 200 is hoisted from bottom to top in the recessed portion 103, and the battery exchange connector 32 passes through the mounting hole and is connected to the box of the battery 200.

[0108] In the above scheme, by arranging the mounting part 30 in the recessed portion 103, the battery 200 can be detachably assembled in the recessed portion 103, so that the vehicle having the frame 100 has a battery replacement function, so that the power loss of the vehicle during driving can be replenished in time by battery replacement, thereby effectively improving the vehicle's endurance performance.

[0109] According to some embodiments of the present application, the recessed portion 103 has an opening 1030 , and the direction of the opening 1030 is parallel to the third direction z. The opening 1030 allows the battery 200 to enter or exit the recessed portion 103 .

[0110] The opening 1030 allows the battery 200 to enter or exit the recess 103 to achieve battery replacement in the vehicle.

[0111] In some embodiments, the opening 1030 for the battery 200 to enter or exit can be set upward so that the battery 200 can be set from top to bottom in the recessed portion 103. Exemplarily, the frame 100 is the frame 100 of a tow vehicle. When nothing is placed above the frame 100, the opening 1030 is open upward, and the battery 200 can be hoisted from above into the recessed portion 103. In some embodiments, the opening 1030 for the battery 200 to enter or exit can be set downward, the vehicle is an ordinary vehicle, and the battery 200 can be replaced from the bottom of the vehicle. For example, a trench can be provided in the battery swap site, and battery swap equipment can be provided in the trench. The vehicle to be battery swapped can drive to the top of the trench, and the battery of the vehicle can be swapped from the bottom of the vehicle through the battery swap equipment.

[0112] In the above solution, by providing the opening 1030, the battery 200 can be installed on the frame 100 from below or above the frame 100, which improves the battery replacement efficiency of the vehicle and meets the battery replacement needs of the vehicle. In some embodiments, such as in a heavy truck battery replacement scenario, by providing a trench at the battery replacement site, the battery 200 can be replaced from below the heavy truck when the heavy truck drives into the trench. In some embodiments, the frame 100 is the frame 100 of a towed vehicle. When there is no object above the frame 100, the battery can be replaced from above.

[0113] According to some embodiments of the present application, the vehicle frame 100 further includes a connector 40 , which is disposed in the recess 103 . The connector 40 is configured to connect to the battery 200 , so that the battery 200 is electrically or fluidically connected to the vehicle end.

[0114] In some embodiments, the connector 40 includes a high- and low-voltage connector 40 and / or a liquid cooling connector 40. The connector 40 may be a vehicle-side connector configured to cooperate with a battery 200 connector to achieve electrical or fluid communication between the vehicle and the battery 200. In some embodiments, the connector 40 may be disposed on the longitudinal beam 10 and connected to the longitudinal beam 10 using screws, snap-fit ​​connections, or other methods. In other embodiments, the vehicle frame 100 includes a mounting member 30, which includes a mounting plate 31 disposed between two longitudinal beams 10. The connector 40 may be disposed on the mounting plate 31.

[0115] In the above solution, by providing a connector 40 in the recessed portion 103, the vehicle frame 100 can effectively perform battery replacement operations, and the battery 200 can be efficiently electrically or fluidically connected to the vehicle end.

[0116] According to some embodiments of the present application, a vehicle is provided. Referring to FIG. 8 , FIG. 8 is a schematic diagram of a vehicle according to some embodiments of the present application. Vehicle 1000 includes a battery 200 and the aforementioned frame 100. Battery 200 is connected to frame 100, with at least a portion of battery 200 housed in recess 103.

[0117] The vehicle 1000 may be a new energy vehicle, and the vehicle 1000 may be a pure electric vehicle, a hybrid vehicle with a replaceable battery, or an extended-range vehicle with a replaceable battery, etc. The battery 200 may be used to power the vehicle. For example, the battery 200 may be used as the operating power source of the vehicle 1000, and used for the circuit system of the vehicle 1000, such as the working power requirements during the startup, navigation, and operation of the vehicle 1000. In some embodiments, the frame 100 may be a frame-type structure of the vehicle 1000 that spans the front and rear axles of the vehicle 1000. In other embodiments, the vehicle 1000 includes a vehicle body and a tractor towed to the rear of the vehicle body, wherein the vehicle body provides driving force to tow the tractor. The frame 100 is the load-bearing structure of the tractor.

[0118] In the above solution, since the frame 100 has the downwardly bent recessed portion 103, on the one hand, the frame 100 is partially moved downward to lower the center of gravity of the frame 100, thereby lowering the center of gravity of the vehicle; on the other hand, the partially downwardly moved portion of the frame 100 can reasonably utilize the height of the battery 200 itself to accommodate at least part of the battery 200, so that the vehicle has an appropriate ground clearance and a battery 200 of appropriate capacity, thereby improving the vehicle's handling performance, passability, and endurance performance.

[0119] According to some embodiments of the present application, the battery 200 is detachably connected to the frame 100 .

[0120] In some embodiments, the battery 200 can be detachably connected to the frame 100 via a battery replacement connector 32. The battery replacement connector 32 includes, but is not limited to, a locking member, a screw member, or other connecting member for locking with the housing of the battery 200. In some embodiments, the frame 100 includes a mounting member 30, which is disposed in the recessed portion 103 and is used to detachably mount the battery 200 in the recessed portion 103.

[0121] In the above solution, by setting the battery 200 to be detachably connected to the frame 100, the vehicle has a battery replacement function, so that the power loss of the vehicle during driving can be replenished in time by battery replacement, thereby effectively improving the vehicle's endurance performance.

[0122] According to some embodiments of the present application, in a direction opposite to the direction of gravity, the battery 200 does not extend beyond the frame 100 . In some embodiments, after the battery 200 is installed on the frame 100 , the battery 200 does not extend beyond the frame 100 , and the battery 200 is entirely located in the recess 103 .

[0123] In the above solution, the middle portion of the frame 100 is bent downward to form a recessed portion 103 capable of accommodating the battery 200, and the degree of the downward bend is such that the battery 200 does not exceed the upper wing of the frame 100. This allows for the loading of more or larger batteries 200 as possible while effectively lowering the center of gravity of the vehicle, thereby improving the vehicle's handling performance and endurance performance.

[0124] According to some embodiments of the present application, referring to Figures 2 to 7 , a vehicle frame 100 is provided. The vehicle frame 100 includes two longitudinal beams 10 and a transverse beam 20 connecting the two longitudinal beams 10. The two longitudinal beams 10 are arranged side by side along a first direction x. Along a second direction y, the longitudinal beam 10 includes a first section 11, a bent section 12, and a second section 13 connected in sequence. The bent section 12 is bent toward a third direction z relative to the first section 11 and the second section 13. The bent sections 12 of the two longitudinal beams 10 together form a recessed portion 103, which is used to accommodate at least part of the battery 200. The second direction y is parallel to the direction from the front end 101 to the rear end 102, the third direction z is the direction of gravity, and the first direction x, the second direction y, and the third direction z are perpendicular to each other.

[0125] In some embodiments, along the second direction y, the bent section 12 includes a first connecting section 120, a widening section 121, and a second connecting section 122 arranged in an interlocking manner. Along the third direction z, the widening section 121 protrudes from the first section 11 and the second section 13. The end of the first connecting section 120 facing away from the widening section 121 is connected to the first section 11, and the end of the second connecting section 122 facing away from the widening section 121 is connected to the second section 13. Along the first direction x, the widening section 121 protrudes outward relative to the first connecting section 120 and the second connecting section 122. The widening sections 121 of the two longitudinal beams 10 together form a receiving cavity for accommodating at least a portion of the battery 200.

[0126] In some embodiments, the battery 200 may be fixed integrally with the vehicle frame 100, meaning that the vehicle with the vehicle frame 100 does not have a battery swapping function. In other embodiments, the battery 200 may be detachably connected to the vehicle frame 100, meaning that the vehicle with the vehicle frame 100 has a battery swapping function.

[0127] In the above solution, by providing a downwardly curved and protruding bent section 12 in the middle of the longitudinal beam 10, the center of gravity of the frame 100 is effectively lowered, while at the same time accommodating at least part of the battery 200. This allows a vehicle equipped with this frame 100 to have appropriate ground clearance and batteries 200 of appropriate capacity, thereby improving the vehicle's handling, roadworthiness, and endurance. Furthermore, by providing an outwardly protruding widened section 121 in the bent section 12 to form a larger accommodating cavity, the frame 100 can accommodate more or larger batteries 200, thereby increasing the vehicle's range and improving its endurance.

[0128] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A vehicle frame, wherein: The frame has a front end and a rear end opposite to each other, the front end and the rear end are respectively used to mount wheels, and the frame is bent downward at at least one position between the front end and the rear end to form a recessed portion, and the recessed portion is used to accommodate at least part of the battery.

2. The frame according to claim 1, wherein: The vehicle frame includes two longitudinal beams, and the two longitudinal beams are arranged side by side along a first direction; Along the second direction, the longitudinal beam includes a first section, a bent section, and a second section connected in sequence, the bent section is bent toward a third direction relative to the first section and the second section, and the bent sections of the two longitudinal beams together form the recessed portion; The second direction is parallel to the direction from the front end to the rear end, the third direction is the direction of gravity, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The frame according to claim 2, wherein: Along the second direction, the bending section includes a first connecting section, a widening section, and a second connecting section arranged mutually. Along the third direction, the widening section protrudes from the first section and the second section. The end of the first connecting section facing away from the widening section is connected to the first section, and the end of the second connecting section facing away from the widening section is connected to the second section. Along the first direction, the widening section protrudes outward relative to the first connecting section and the second connecting section, and the widening sections of the two longitudinal beams jointly form an accommodating cavity, which is used to accommodate at least part of the battery.

4. The vehicle frame according to claim 3, wherein: The first connecting section is arc-shaped, and the widening section is transitionally connected to the first section via the first connecting section. The second connecting section is arc-shaped, and the widening section is transitionally connected to the second section via the second connecting section.

5. The vehicle frame according to claim 3 or 4, wherein: Along the second direction, the widening section includes a first straight section, a second straight section and a third straight section arranged with each other; Along the first direction, the first straight section protrudes outward from the first connecting section, one end of the first straight section is connected to the first connecting section, and the other end of the first straight section is connected to the second straight section; Along the first direction, the third straight segment protrudes outward from the second connecting segment, one end of the third straight segment is connected to the second connecting segment, and the other end of the third straight segment is connected to the second straight segment.

6. The vehicle frame according to claim 5, wherein: The widening section also includes a third connecting section and a fourth connecting section. The third connecting section is arc-shaped, and the first straight section is transitionally connected to the second straight section through the third connecting section. The fourth connecting section is arc-shaped, and the third straight section is transitionally connected to the second straight section through the fourth connecting section.

7. The frame according to any one of claims 3 to 6, wherein: Along the first direction, the maximum distance between the widened sections of two longitudinal beams is not less than 2000 mm and not more than 2500 mm.

8. The frame according to any one of claims 2 to 7, wherein: The first section, the bent section and the second section are integrally formed.

9. The frame according to any one of claims 2 to 8, wherein: Along the third direction, the first section has a first surface, the bent section has a second surface, the second section has a third surface, and the first surface, the second surface, and the third surface are arranged on the same side; Along the third direction, the maximum distance between the second surface and the first surface is not less than 300 mm and not more than 400 mm; the maximum distance between the third surface and the second surface is not less than 300 mm and not more than 400 mm.

10. The vehicle frame according to any one of claims 2 to 9, wherein: The vehicle frame further includes a mounting member, which is disposed in the recessed portion and is used to detachably mount the battery in the recessed portion.

11. The vehicle frame according to claim 10, wherein: The recessed portion has an opening, the direction of the opening is parallel to the third direction, and the opening is used for the battery to enter or leave the recessed portion.

12. The vehicle frame according to claim 10 or 11, wherein: The vehicle frame further includes a connector, which is disposed in the recessed portion and is configured to be connected to the battery so that the battery is in electrical or fluid communication with the vehicle end.

13. A vehicle, wherein: include: Battery; The frame according to any one of claims 1 to 12; The battery is connected to the vehicle frame, and at least a portion of the battery is accommodated in the recessed portion.

14. The vehicle according to claim 13, wherein: The battery is detachably connected to the vehicle frame.

15. A vehicle according to claim 13 or 14, wherein: In a direction opposite to the direction of gravity, the battery does not protrude from the frame.

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