Lower vehicle body sill beam, lower vehicle body, vehicle body structure, and vehicle

Abstract

A lower vehicle body sill beam (10), the sill beam being located at an outer side of a battery assembly (20) of the lower vehicle body in a width direction. In the width direction of the sill beam, the sill beam has two oppositely disposed sides, a portion of one side of the sill beam being recessed toward the other side to form a clearance slot (11), and the clearance slot being adapted to be disposed opposite to at least a portion of the battery assembly. Also provided are a lower vehicle body (100), a vehicle body structure (1000), and a vehicle. By means of disposing a clearance slot at one side of the sill beam, a clearance space between the sill beam and the battery assembly is increased, thereby allowing space for the battery assembly during side impact collision, and reducing the likelihood of the sill beam and the battery assembly from being compressed during a side impact collision.

Description

Lower body rocker beam, lower body, body structure and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202410399722.2 and application date April 2, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a lower body sill beam, a lower body, a body structure, and a vehicle. Background Art

[0004] Battery-body integration, which integrates the battery pack and chassis, has become a major area of ​​research and development to improve efficiency and reduce costs. However, in related technologies, the vehicle's door sills and battery housing are separate components. This reduces the efficiency of battery placement in the vehicle's Y-axis, impacting the vehicle's range, due to safety considerations. Summary of the Invention

[0005] In view of the above problems, the present application provides a lower body sill beam, a lower body, a body structure and a vehicle, which can improve the utilization rate in the Y direction and increase the vehicle's cruising range.

[0006] In a first aspect, the present application provides a sill beam of a lower vehicle body, the sill beam having a length direction, a width direction, and a height direction. The sill beam is on the outside of the battery assembly of the lower vehicle body in the width direction. In the width direction of the sill beam, the sill beam has two sides arranged opposite to each other, and a portion of one side of the sill beam is recessed toward the other side to form an avoidance groove, and the avoidance groove is suitable for being arranged opposite to at least a portion of the battery assembly.

[0007] In the technical solution of the embodiment of the present application, an avoidance groove is provided on one side of the sill beam to increase the avoidance space between the sill beam and the battery assembly, so as to avoid the battery assembly when the side column collides, reduce the probability of the sill beam and the battery assembly being squeezed when the side column collides, and at the same time improve the space utilization rate in the width direction of the sill beam, which is beneficial to improve the layout efficiency of the battery in the width direction of the sill beam and can increase the cruising range; in addition, the avoidance groove is simple to set up, easy to process and manufacture, and thus easy to promote and use.

[0008] In some embodiments, a groove wall of the avoidance groove is provided with an avoidance hole.

[0009] In the above technical solution, by setting up the avoidance hole, when the side column of the whole vehicle hits the working condition, the rocker beam moves toward the direction close to the battery, and the battery cooling plate current collector can extend into the avoidance groove. Even if the movement is too large, a part of the battery cooling plate current collector can pass through the avoidance hole, further reducing the probability of the current collector being directly squeezed and damaged, without increasing the distance between the rocker beam as a whole and the battery assembly, thereby further improving the layout efficiency of the battery in the width direction of the lower body, and thus improving the cruising range.

[0010] In some embodiments, the avoidance holes include a plurality of avoidance holes, and the plurality of avoidance holes are arranged at intervals along the length direction of the door sill beam.

[0011] In the above technical solution, when the vehicle is hit by a side column, the battery cooling plate collector can be extended into the avoidance groove, and the diversion part can be provided with an avoidance hole, so as to further reduce the probability of the collector being directly squeezed and damaged, thereby improving the reliability of the vehicle; and the multiple avoidance holes are arranged at intervals, which can avoid the excessive reduction of the structural strength of the rocker beam itself to a certain extent, thereby improving the stability of the entire rocker beam.

[0012] In some embodiments, there is one avoidance hole, and the avoidance hole extends along the length direction of the door sill beam.

[0013] In the above technical solution, by providing an avoidance hole extending along the length direction of the door sill beam, the avoidance hole can correspond to the multiple diversion parts protruding from the battery cooling plate collector. When the vehicle is in a side column collision condition, the battery cooling plate collector can extend into the avoidance groove, and the diversion part can pass through the avoidance hole, thereby further reducing the probability of the collector being directly squeezed and damaged, and improving the reliability of the vehicle. The provision of a single avoidance hole facilitates the manufacturing and forming of the door sill beam, and also facilitates the correspondence of the avoidance hole with the positions of multiple diversion parts, thereby avoiding to a certain extent the misalignment of the avoidance hole and the diversion part caused by manufacturing errors, assembly errors, etc., and improving the manufacturing efficiency and assembly efficiency.

[0014] In some embodiments, the avoidance groove includes a bottom wall and a first inner side wall and a second inner side wall arranged opposite to each other. Along the direction close to the bottom wall, the first inner side wall and the second inner side wall are inclined and extend toward each other.

[0015] In the above technical solution, the cross-section of the avoidance groove can correspond to the shape of the battery cooling plate collector, so that the avoidance groove can serve as an avoidance area for the collector, and while achieving the avoidance effect, the strength and stability of the door sill beam structure itself can be improved as much as possible.

[0016] In some embodiments, in the height direction of the sill beam, two opposite side surfaces of the sill beam respectively have connecting surfaces, and the two connecting surfaces are used to abut against the cover and the bottom plate of the lower vehicle body.

[0017] In the above technical solution, the connecting surface of the sill beam is directly connected to the cover plate and the bottom plate, so that the width dimension of the sill beam can be fully utilized, and the installation and sealing interface related to the lower body can be efficiently arranged, so that the sill beam integrates the functions of the traditional vehicle sill beam and the battery frame.

[0018] In some embodiments, the avoidance groove corresponds to positions of the two connecting surfaces of the door sill beam.

[0019] In the above technical solution, in the width direction of the door sill beam, the space for the battery assembly is avoided from overlapping with the space for the cover and the bottom plate assembly, thereby achieving full utilization of the width direction of the door sill beam.

[0020] In some embodiments, in the width direction of the sill beam, the side of the sill beam facing away from the avoidance groove has an inclined side wall and a connecting portion, the connecting portion is suitable for connecting to the upper vehicle body, one end of the inclined side wall is connected to the connecting portion, and the other end of the inclined side wall extends obliquely along the width direction of the sill beam away from the connecting portion, and the inclined side wall has an installation position for installing a pipeline of the lower vehicle body.

[0021] In the above technical solution, by providing inclined side walls, the pipelines can be arranged within the width of the sill beam, without increasing the space from the sill beam to the battery assembly due to the arrangement of the pipelines. At the same time, the arrangement of the pipelines will not interfere with the disassembly and assembly of the upper and lower vehicle bodies, so that the upper and lower vehicle body mounting points have sufficient operating space, thereby improving the feasibility of the product.

[0022] In some embodiments, the upper surface of the rocker beam includes a mating surface, and the mating surface is configured to abut against the upper vehicle body.

[0023] In the above technical solution, the width dimension of the door sill beam can be fully utilized to achieve efficient arrangement of the installation and sealing interface of the upper and lower vehicle bodies.

[0024] In some embodiments, the threshold beam is provided with a plurality of the mating surfaces, and the plurality of the mating surfaces are arranged along the width direction of the threshold beam and staggered along the height direction of the threshold beam.

[0025] In the above technical solution, multiple mating surfaces are respectively in contact with the upper body to form a stepped surface of matching shape on the upper body. The stepped surface can not only be used to achieve limitation in the width direction and support limitation in the up and down directions, which is beneficial to improve the connection strength between the sill beam and the upper body; moreover, multi-point connection can be achieved in the width direction to improve connection reliability.

[0026] In some embodiments, the threshold beam is a frame structure and in the width direction of the threshold beam, the threshold beam includes a first frame, a second frame and a third frame, the first frame and the third frame are located on opposite sides of the second frame, and the first frame is provided with the avoidance groove.

[0027] In the above technical solution, the sill beam is a frame structure, which can effectively reduce the weight of the sill beam and reduce manufacturing costs. At the same time, the cavity defined by the sill beam can play a role in buffering and energy absorption, thereby improving the reliability of the lower vehicle body. At the same time, it can reduce the impact of the setting of the avoidance groove on the structural strength of the sill beam, so that the sill beam has sufficient structural strength to meet the basic requirements of the sill beam as a beam body.

[0028] In some embodiments, the door sill beam has a cavity, and a groove wall of the avoidance groove has an avoidance hole communicating with the cavity.

[0029] In the above technical solution, the avoidance hole is connected to the cavity. When the vehicle is in a side column collision condition, the door sill beam moves toward the battery, and the battery cooling plate current collector can extend into the avoidance groove. A part of the battery cooling plate current collector can pass through the avoidance hole and extend into the cavity, thereby reducing the probability of the current collector being directly squeezed and damaged.

[0030] In some embodiments, the third frame forms a connecting portion suitable for connecting to the upper body, a portion of the second frame is located at the lower part of the third frame and has an inclined side wall extending obliquely away from the third frame, and the inclined side wall has an installation position for installing the pipeline of the lower body.

[0031] In the above technical solution, the pipelines can be arranged within the width of the sill beam, and there is no need to increase the space from the sill beam to the battery assembly due to the arrangement of the pipelines. At the same time, the setting of the pipelines will not interfere with the disassembly and assembly of the upper and lower vehicle bodies, so that the upper and lower vehicle body mounting points have sufficient operating space, thereby improving the feasibility of the product.

[0032] In some embodiments, the first frame, the second frame and the third frame are integrally formed.

[0033] In the above technical solution, the overall structure of the threshold beam can be an integrally formed profile structure, which is easy to manufacture and has low manufacturing cost.

[0034] In a second aspect, the present application provides a lower body, which includes the rocker beam of the lower body and a battery assembly in the above embodiment, wherein the rocker beam is located on the outside of the battery assembly.

[0035] In the above technical solution, by adopting the above-mentioned threshold beam, the avoidance space between the threshold beam and the battery assembly is increased, so that the battery assembly can be avoided when the side column collides, reducing the probability of the threshold beam and the battery assembly being squeezed when the side column collides, and at the same time improving the space utilization rate in the width direction of the threshold beam, which is beneficial to improving the layout efficiency of the battery in the width direction of the threshold beam and can increase the cruising range.

[0036] In some embodiments, the battery assembly includes a battery, a battery cooling plate and a battery cooling plate collector, the battery cooling plate is used to cool and dissipate heat for the battery, the battery cooling plate collector is connected to the battery cooling plate, and the battery cooling plate collector is located on the side of the battery close to the door sill, and the avoidance groove is suitable for being arranged relative to at least a portion of the battery cooling plate collector.

[0037] In the above technical solution, when the vehicle is hit by a side pole, the door sill beam moves toward the battery, and the battery cooling plate current collector can extend into the avoidance groove without causing the current collector to be directly squeezed by the door sill beam, thereby improving the reliability of the lower body and ensuring that the battery intrusion amount meets the standard and the battery cooling plate current collector will not be squeezed and damaged when the vehicle is hit by a side pole.

[0038] In some embodiments, the lower vehicle body further includes a cover and a bottom plate, the cover abuts against the connecting surface of the upper surface of the sill beam and is connected via a connecting structure, and the bottom plate abuts against the connecting surface of the lower surface of the sill beam and is connected via a connecting structure.

[0039] In the above technical solution, the first connecting surface can abut against the lower surface of the connection of the cover body to achieve reliable limitation and fixation of the sill beam and the cover body in the up and down directions; the second connecting surface can abut against the lower surface of the connection of the bottom plate of the lower vehicle body to achieve reliable limitation and fixation of the sill beam and the bottom plate in the up and down directions.

[0040] In some embodiments, the lower vehicle body further includes a brake line, and a side of the rocker beam facing away from the avoidance groove has a mounting position, and at least a portion of the brake line is mounted to the mounting position.

[0041] In the above technical solution, the brake lines can be arranged within the width of the door sill beam, without increasing the space from the door sill beam to the battery assembly due to the arrangement of the lines.

[0042] In some embodiments, the lower vehicle body further includes a motor cooling pipeline, and a side of the door sill facing away from the avoidance groove has a mounting position, and at least a portion of the motor cooling pipeline is mounted to the mounting position.

[0043] In the above technical solution, the motor cooling pipeline can be arranged within the width of the door sill beam, and there is no need to increase the space from the door sill beam to the battery assembly due to the arrangement of the pipeline.

[0044] In a third aspect, the present application provides a vehicle body structure, which includes an upper body and a lower body of the above embodiment, wherein the lower body is mounted on the lower side of the upper body, and the sill beam is connected to the upper body.

[0045] In this technical solution, the rocker beam is connected to the upper body, fully utilizing its width to achieve efficient placement of the mounting and sealing interfaces between the upper and lower bodies. This, in turn, improves the battery layout across the rocker beam's width, thereby increasing range. Furthermore, the lower body increases the clearance between the rocker beam and the battery assembly, allowing the battery assembly to clear the rocker beam in the event of a side column collision, reducing the likelihood of compression between the rocker beam and the battery assembly.

[0046] In some embodiments, the upper vehicle body includes a threshold connecting plate, the threshold beam has a first mating surface, the threshold connecting plate abuts against the first mating surface, and the threshold beam and the threshold connecting plate are connected via a connecting structure.

[0047] In the above technical solution, the structure of the door sill beam can be fully utilized to realize the installation of the upper and lower vehicle bodies.

[0048] In some embodiments, a sealing member is further included, wherein the sealing member extends at least along a length direction of the sill beam and seals a gap between the sill beam and the sill connecting plate.

[0049] In the above technical solution, the structure of the door sill beam can be fully utilized to achieve efficient installation of the upper and lower vehicle bodies and arrangement of the sealing interface.

[0050] In some embodiments, the upper body includes a rocker reinforcement plate, the rocker beam has a connecting portion, the upper surface of the connecting portion forms a second mating surface, the second mating surface abuts the rocker reinforcement plate, and the rocker reinforcement plate is connected to the connecting portion via a connecting structure.

[0051] In the above technical solution, the structure of the door sill beam can be fully utilized to realize the installation of the upper and lower vehicle bodies.

[0052] In a fourth aspect, an embodiment of the present application further provides a vehicle comprising the above-mentioned body structure.

[0053] 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

[0054] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0055] FIG1 is a schematic diagram of a vehicle in the related art;

[0056] FIG2 is a schematic diagram of a lower vehicle body according to some embodiments of the present application;

[0057] FIG3 is a schematic diagram of a threshold beam provided by some embodiments of the present application at one viewing angle;

[0058] FIG4 is a schematic diagram of a threshold beam provided by some embodiments of the present application from another perspective;

[0059] FIG5 is a side view of a threshold beam provided by some embodiments of the present application at one viewing angle;

[0060] FIG6 is a side view of a threshold beam provided by some embodiments of the present application from another perspective;

[0061] FIG7 is a side view of a threshold beam provided by some embodiments of the present application from another perspective;

[0062] FIG8 is a partial schematic diagram of an upper vehicle body according to some embodiments of the present application;

[0063] FIG9 is a schematic diagram of partial coordination between the upper vehicle body and the lower vehicle body in some embodiments of the present application.

[0064] Figure numerals: Vehicle body structure 1000, lower vehicle body 100, upper vehicle body 200, sill beam 10, first frame 101, second frame 102, third frame 103, avoidance groove 11, first inner side wall 111, second inner side wall 112, bottom wall 113, avoidance hole 12, first connecting surface 13, second connecting surface 14, inclined side wall 15, connecting portion 16, first mating surface 17, second mating surface 18, battery assembly 20, battery cooling plate current collector 21, cover 30, bottom plate 40, brake line 50, motor cooling line 60, sill connecting plate 71, sill reinforcement plate 72, sill inner plate 73, sill outer plate 74, side panel outer plate 75, side panel reinforcement plate 76, seal 80, connecting structure 90, width direction F1, height direction F2, length direction F3. DETAILED DESCRIPTION

[0065] 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 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.

[0066] 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", "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-secondary relationship.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0071] The term "plurality" used in this application refers to two or more (including two).

[0072] In this application, a battery refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the batteries mentioned in this application may include battery modules or battery packs. Some batteries may include a casing for enclosing one or more battery cells or multiple battery modules. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells. Of course, some batteries may not include the above-mentioned casing and are directly installed in the battery installation compartment of the electrical device.

[0073] In some related technologies, the vehicle has a complete chassis structure, including crossbeams, frame longitudinal beams, floors and other structures. The battery pack is then installed on the chassis of the vehicle. It has many parts, a complex structure, is heavy, and is difficult to replace and repair.

[0074] Among other related technologies, battery-body integration—integrating the battery pack and chassis—has become a key area of ​​research and development to improve efficiency and reduce costs. However, in these technologies, the vehicle's door sills and battery housing are separate components. This reduces the efficiency of battery placement in the vehicle's Y-axis, impacting the vehicle's range, due to safety considerations.

[0075] Based on this, the present application proposes a sill beam of the lower body. In the present application, the sill beam has a length direction, a width direction and a height direction. The sill beam is on the outside of the battery assembly of the lower body in the width direction. In the width direction of the sill beam, the sill beam has two sides arranged opposite to each other. A part of one side of the sill beam is recessed toward the other side to form an avoidance groove, and the avoidance groove is suitable for being arranged opposite to at least a part of the battery assembly.

[0076] When adopting the rocker beam of the lower body of the above-mentioned structure, an avoidance groove is provided on one side of the rocker beam to increase the avoidance space between the rocker beam and the battery assembly, so as to avoid the battery assembly when the side column hits, reduce the probability of the rocker beam and the battery assembly being squeezed when the side column hits, and at the same time improve the space utilization rate in the width direction of the rocker beam, which is beneficial to improve the layout efficiency of the battery in the width direction of the rocker beam and can increase the cruising range; in addition, the setting of the avoidance groove is simple, easy to process and manufacture, and thus easy to promote and use.

[0077] The lower body having the rocker beam according to the embodiment of the present application, and the body structure having the lower body can be used in vehicles, and the vehicle can be a fuel vehicle, a gas vehicle, a new energy vehicle, or a rail vehicle, wherein the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, an extended-range electric vehicle, and a fuel cell powered vehicle, etc.

[0078] Below, with reference to Figures 1 and 2, the vehicle body structure 1000 and the lower body 100 according to an embodiment of the present application are described. As shown in Figure 1, the vehicle body structure 1000 includes an upper body 200 and a lower body 100. The lower body 100 is installed on the lower side of the upper body 200, and the upper body 200 and the lower body 100 cooperate to define a passenger compartment; the connection method between the lower body 100 and the upper body 200 includes but is not limited to welding, clamping, bonding, fastener connection, etc.

[0079] As shown in Figure 2, the lower body 100 includes a rocker beam 10 and a battery assembly 20. In the width direction F1 of the body structure 1000, the rocker beam 10 is located on the outside of the battery assembly 20. It should be noted that the lower body 100 is connected to the upper body 200, which may include the connection between the rocker beam 10 and the upper body 200, as well as the connection of other components.

[0080] 3 to 9 , a rocker beam 10 of a lower vehicle body 100 according to an embodiment of the present application will be described.

[0081] Figures 3 to 7 show views of the sill beam 10 provided in some embodiments from different perspectives. As shown in Figures 3 to 7, according to the sill beam 10 of the lower body 100 of the embodiment of the present application, the sill beam 10 has a length direction F3, a width direction F1 and a height direction F2. The sill beam 10 is on the outside of the battery assembly 20 of the upper and lower body 100 in the width direction F1. In the width direction F1 of the sill beam 10, the sill beam 10 has two sides arranged oppositely. A portion of one side of the sill beam 10 is recessed toward the other side to form an avoidance groove 11. The avoidance groove 11 is suitable for being arranged opposite to at least a portion of the battery assembly 20.

[0082] The length direction F3 of the rocker beam 10 is the length direction F3 of the lower body 100, the body structure 1000, and the vehicle. The width direction F1 of the rocker beam 10 is the width direction F1 of the lower body 100, the body structure 1000, and the vehicle. The height direction F2 of the rocker beam 10 is the height direction F2 of the lower body 100, the body structure 1000, and the vehicle.

[0083] For example, the length direction F3 of the sill beam 10 is the front-to-back direction, the width direction F1 of the sill beam 10 is the left-to-right direction, and the height direction F2 of the sill beam 10 is the up-down direction. In the description of this application, the directions of up, down, front, back, left, and right are all based on the orientation of the vehicle, that is, the direction from the front of the vehicle to the rear of the vehicle is the direction from front to back, the direction from the roof to the bottom of the vehicle is the direction from top to bottom, and the driver's seat and the co-driver's seat are arranged along the left-to-right direction.

[0084] The battery assembly 20 includes a battery, which is a physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery referred to herein may include a battery module or battery pack. Some batteries may include a housing for housing one or more battery cells or modules. The housing reduces or prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0085] 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 present application does not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the present application does not limit this. Battery cells are generally divided into three types based on the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the present application does not limit this.

[0086] For example, a battery cell may include a housing, an electrode assembly, and an electrolyte. The housing houses the electrode assembly and electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets.

[0087] The battery assembly 20 also includes a module for dissipating heat from the battery, for example, a plurality of battery cooling plates and a battery cooling plate collector 21. The battery cooling plates are arranged between adjacent batteries or battery cells to cool and dissipate heat from the batteries. The battery cooling plate collector 21 is arranged on the same side of the plurality of battery cooling plates. The battery cooling plate collector 21 is connected to the battery cooling plates. The battery cooling plate collector 21 is used to collect and output the coolant from the main line to the battery cooling plates to absorb the heat generated when the batteries are working.

[0088] The sill beam 10 is provided with a concave avoidance groove 11. Taking the sill beam 10 located on the left side of the battery assembly 20 as an example, the right side of the sill beam 10 has a leftward concave avoidance groove 11, and the avoidance groove 11 can be arranged opposite to the battery cooling plate collector 21 of the battery assembly 20, that is, the sill beam 10 is configured to partially open a groove to form an avoidance area. When the vehicle side column hits the vehicle, the sill beam 10 moves toward the direction close to the battery, and the battery cooling plate collector 21 can extend into the avoidance groove 11 without causing the collector to be directly squeezed by the sill beam 10. In other words, without increasing the distance between the sill beam 10 as a whole and the battery assembly 20, by providing the avoidance groove 11 on the sill beam 10, it can be ensured that the battery intrusion amount meets the standard when the vehicle side column hits the vehicle, and the battery cooling plate collector 21 will not be squeezed and damaged.

[0089] As shown in Figure 9, Figure 9 is a schematic diagram of the partial coordination of the upper body 200 and the lower body 100 in some embodiments of the present application. On the lower body 100, the m line corresponds to the outermost position of the door sill beam 10, and the n line corresponds to the outermost position of the battery. The distance d between m and n is the safety distance required from the outer side of the door sill beam 10 to the battery.

[0090] Compared with the prior art in which the side of the sill beam 10 close to the battery assembly 20 is usually a vertical limiting surface, the sill beam 10 provided with the avoidance groove 11 can reduce the safety distance required from the outer side of the sill beam 10 to the battery while ensuring the function, sealing and collision safety of the entire vehicle, thereby improving the layout efficiency of the battery in this direction and further increasing the cruising range.

[0091] According to the sill beam 10 of the embodiment of the present application, an avoidance groove 11 is provided on one side of the sill beam 10 to increase the avoidance space between the sill beam 10 and the battery assembly 20, so as to avoid the battery assembly 20 when a side column hits the sill beam 10, thereby reducing the probability of the sill beam 10 and the battery assembly 20 being squeezed when the side column hits the sill beam 10, and at the same time improving the space utilization rate in the width direction F1 of the sill beam 10, which is beneficial to improving the layout efficiency of the battery in the width direction F1 of the sill beam 10 and can improve the cruising range; in addition, the avoidance groove 11 is simple to set up, easy to process and manufacture, and thus easy to promote and use.

[0092] As shown in FIG. 3 and FIG. 6 , in some embodiments, a groove wall of the avoidance groove 11 is provided with an avoidance hole 12 .

[0093] As shown in Figure 3, the avoidance groove 11 has a bottom wall 113, a first inner wall 111 and a second inner wall 112. The first inner wall 111 is located on the side of the second inner wall 112 in the height direction F2 of the rocker beam 10. At least one of the bottom wall 113, the first inner wall 111 and the second inner wall 112 is provided with an avoidance hole 12. Therefore, when the side column of the vehicle hits the rocker beam 10, it moves toward the direction close to the battery, and the battery cooling plate current collector 21 can extend into the avoidance groove 11. Even if the movement is too large, a part of the battery cooling plate current collector 21 can pass through the avoidance hole 12, further reducing the probability of the current collector being directly squeezed and damaged without increasing the distance between the rocker beam 10 as a whole and the battery assembly 20, thereby further improving the layout efficiency of the battery in the width direction F1 of the lower body 100, thereby improving the cruising range.

[0094] In some embodiments, the avoidance hole 12 includes a plurality of avoidance holes 12 , and the plurality of avoidance holes 12 are arranged at intervals along the length direction F3 of the door sill beam 10 .

[0095] As shown in Figure 8, the battery cooling plate current collector 21 is provided with a plurality of diverter portions protruding toward one side of the door sill beam 10, and the plurality of avoidance holes 12 correspond one-to-one to the plurality of diverter portions. Therefore, when the vehicle is in a side column collision condition, the battery cooling plate current collector 21 can extend into the avoidance groove 11, and the diverter portion can be penetrated by the avoidance holes 12, thereby further reducing the probability of the current collector being directly squeezed and damaged, thereby improving the reliability of the vehicle; and the plurality of avoidance holes 12 are arranged at intervals, which can avoid the transitional reduction of the structural strength of the door sill beam 10 itself to a certain extent, thereby improving the stability of the entire door sill beam 10.

[0096] In some embodiments, there is one avoidance hole 12 , and the avoidance hole 12 extends along the length direction F3 of the door sill beam 10 .

[0097] By setting an avoidance hole 12 extending along the length direction F3 of the door sill beam 10, the avoidance hole 12 can correspond to the multiple diversion parts protruding from the battery cooling plate collector 21. When the vehicle is in a side column collision condition, the battery cooling plate collector 21 can extend into the avoidance groove 11, and the diversion part can pass through the avoidance hole 12, which further reduces the probability of the collector being directly squeezed and damaged, and improves the reliability of the vehicle; the setting of a single avoidance hole 12 facilitates the manufacturing and forming of the door sill beam 10, and also facilitates the position correspondence of the avoidance hole 12 with multiple diversion parts, which to a certain extent avoids the misalignment of the avoidance hole 12 and the diversion part caused by manufacturing errors, assembly errors, etc., and improves manufacturing efficiency and assembly efficiency.

[0098] As shown in FIG5 , in some embodiments, the avoidance groove 11 includes a bottom wall 113 and a first inner side wall 111 and a second inner side wall 112 arranged opposite to each other. Along the direction close to the bottom wall 113 , the first inner side wall 111 and the second inner side wall 112 extend obliquely toward each other.

[0099] As shown in Figure 5, the first inner wall 111 is located on the side of the second inner wall 112 in the height direction F2 of the door sill beam 10. The first inner wall 111 and the second inner wall 112 of the avoidance groove 11 both form inclined surfaces. The first inner wall 111 extends obliquely from top to bottom toward the direction close to the bottom wall 113, and the second inner wall 112 extends obliquely from bottom to top toward the direction close to the bottom wall 113, so that the cross-section of the avoidance groove 11 is approximately triangular in shape, and the cross-sectional shape of the battery cooling plate current collector 21 is roughly triangular, that is, the cross-section of the avoidance groove 11 corresponds to the shape of the battery cooling plate current collector 21, thereby making the avoidance groove 11 can be used as an avoidance area for the current collector, and while achieving the avoidance effect, the strength and stability of the structure of the door sill beam 10 itself are improved as much as possible.

[0100] In some embodiments, in the height direction F2 of the sill beam 10 , two opposite side surfaces of the sill beam 10 respectively have connecting surfaces, and the two connecting surfaces are used to abut against the cover 30 and the bottom plate 40 of the lower vehicle body 100 .

[0101] Abutment refers to the abutment between two components, which are pressed against each other to improve the strength of the connection between the two components. Taking the sill beam 10 and the cover body 30 of the lower body 100 as an example, the upper surface of the sill beam 10 has a first connecting surface 13, which can abut the lower surface of the connection between the cover body 30 to achieve reliable limitation and fixation of the sill beam 10 and the cover body 30 in the upper and lower directions; the lower surface of the sill beam 10 has a second connecting surface 14, which can abut the lower surface of the connection between the bottom plate 40 of the lower body 100 to achieve reliable limitation and fixation of the sill beam 10 and the bottom plate 40 in the upper and lower directions.

[0102] Furthermore, both the first connecting surface 13 and the second connecting surface 14 have connecting holes, and connecting holes are provided at corresponding positions of the cover body 30 and the bottom plate 40. The connecting holes of the cover body 30 and the door sill beam 10 are penetrated by the connecting structure 90 to fix the cover body 30 and the door sill beam 10. The connecting holes of the bottom plate 40 and the door sill beam 10 are penetrated by the connecting structure 90 to fix the bottom plate 40 and the door sill beam 10. A seal 80 can also be provided at the connection here. The seal 80 can be a sealing strip, a sealant, or a sealant with instant noodles, etc., thereby improving the sealing of the lower body 100, and the connecting structure 90 can improve the sealing effect and stability of the seal 80.

[0103] It should be noted that, in the height direction F2 of the sill beam 10 , the first connecting surface 13 and the second connecting surface 14 may completely correspond, partially correspond, or be staggered, mainly to fully utilize the surfaces on both sides of the sill beam 10 .

[0104] Thus, by directly contacting the connecting surface of the rocker beam 10 with the cover plate and the bottom plate 40, the size of the rocker beam 10 in the width direction F1 can be fully utilized, and the installation and sealing interfaces related to the lower body 100 can be efficiently arranged, so that the rocker beam 10 integrates the functions of the traditional vehicle rocker beam 10 and the battery frame.

[0105] As shown in FIG. 5 , in some embodiments, the avoidance groove 11 corresponds to the positions of the two connecting surfaces of the door sill beam 10 .

[0106] As shown in FIG5 , in the height direction F2 of the sill beam 10 , the avoidance groove 11 is located between the first connecting surface 13 and the second connecting surface 14 . This allows the space for avoiding the battery assembly 20 to overlap with the space for assembling the cover 30 and the bottom plate 40 in the width direction F1 of the sill beam 10 , thereby achieving full utilization of the width direction F1 of the sill beam 10 .

[0107] As shown in FIG5 , the first inner side wall 111 forms an inclined surface, and the sill beam 10 has a first connecting surface 13 located above the first inner side wall. The first connecting surface 13 extends in a horizontal direction, and a triangular area is enclosed between the first connecting surface 13 and the first inner side wall 111. The stability of the triangle is utilized to further improve the structural strength of the sill beam 10 at this location.

[0108] Correspondingly, as shown in FIG5 , the second inner side wall 112 forms an inclined surface, and the sill beam 10 has a second connecting surface 14 located below the second inner side wall. The second connecting surface 14 extends in a horizontal direction, and a triangular area is formed between the second connecting surface 14 and the second inner side wall 112 . The stability of the triangle is utilized to further improve the structural strength of the sill beam 10 at this location.

[0109] As shown in Figure 5, in some embodiments, in the width direction F1 of the sill beam 10, the side of the sill beam 10 that faces away from the avoidance groove 11 has an inclined side wall 15 and a connecting portion 16, and the connecting portion 16 is suitable for connecting to the upper body 200. One end of the inclined side wall 15 is connected to the connecting portion 16, and the other end of the inclined side wall 15 extends obliquely along the width direction F1 of the sill beam 10 in a direction away from the connecting portion 16. The inclined side wall 15 has an installation position for installing pipelines of the lower body 100.

[0110] As shown in Figures 5 and 9, the connecting portion 16 is connected to the upper body 200 via a connecting structure 90, thereby connecting the sill beam 10 to the upper body 200. The connecting structure 90 may include a rivet sleeve, a bolt, and a nut. Specifically, a rivet sleeve is press-fitted into the cavity of the connecting portion 16, and a nut is projection-welded onto the upper body 200, and the two are connected via bolts.

[0111] The upper end of the inclined side wall 15 is connected to the connecting part 16, and the lower end of the inclined side wall 15 extends obliquely to the right. The pipeline of the lower body 100 is installed on the inclined side wall 15, so that the pipeline of the lower body 100 can be installed on the right side of the connecting structure 90 on the connecting part 16. The two will not overlap in the upper and lower directions. Therefore, the connecting structure 90 can be disassembled and assembled from the lower side of the connecting part 16, and when disassembling and assembling the connecting structure 90, the pipeline of the lower body 100 will not interfere with the entire disassembly and assembly movement.

[0112] The pipeline can be a brake pipeline 50 or a motor cooling pipeline 60 , or can include both the brake pipeline 50 and the motor cooling pipeline 60 . The pipeline can be fixed at the installation position of the inclined side wall 15 by a pipe clamp.

[0113] That is to say, by providing the inclined side wall 15, the pipeline can be arranged within the width range of the door sill beam 10, and there is no need to increase the space from the door sill beam 10 to the battery assembly 20 due to the arrangement of the pipeline. At the same time, the setting of the pipeline will not interfere with the disassembly and assembly of the upper and lower vehicle bodies 100, so that the upper and lower vehicle body mounting points have sufficient operating space, thereby improving the feasibility of the product.

[0114] In some embodiments, the upper surface of the sill beam 10 includes a mating surface configured to abut against the upper vehicle body 200. The mating surface abuts against the upper vehicle body 200 to achieve reliable vertical positioning and fixation of the sill beam 10 and the upper vehicle body 200, thereby improving the connection strength between the sill beam 10 and the upper vehicle body 200.

[0115] The mating surface may be a portion of the upper surface of the sill beam 10 or the entire upper surface of the sill beam 10 , both of which can improve the overall strength to varying degrees.

[0116] Furthermore, the mating surface may have a connecting hole, and a connecting hole is provided at the corresponding position of the upper body 200. The connecting hole of the upper body 200 and the door sill beam 10 is penetrated by the connecting structure 90 to fix the upper body 200 and the door sill beam 10 in connection. A seal 80 may also be provided at the connection here. The seal 80 may be a sealing strip, a sealant, or a sealant with instant noodles, etc., thereby improving the sealing of the connection between the upper and lower body 100, and the connecting structure 90 can improve the sealing effect and stability of the seal 80.

[0117] Thus, the dimension of the sill beam 10 in the width direction F1 can be fully utilized, and the installation and sealing interface of the upper and lower vehicle bodies 100 can be efficiently arranged.

[0118] As shown in FIG. 4 and FIG. 5 , in some embodiments, the sill beam 10 is provided with a plurality of mating surfaces, which are arranged along the width direction F1 of the sill beam 10 and staggered along the height direction F2 of the sill beam 10 .

[0119] As shown in FIG5 , the upper surface of the sill beam 10 has a first mating surface 17 and a second mating surface 18 . The first mating surface 17 and the second mating surface 18 are arranged at a height staggered in the vertical direction so that the upper surface of the sill beam 10 forms a stepped surface. There may be more mating surfaces here, each of which may extend in the horizontal direction, and two adjacent mating surfaces may be connected by a surface extending in the vertical direction. The heights of the multiple mating surfaces may increase or decrease from the inside to the outside, or may increase and decrease alternately. Of course, the mating surfaces may also extend in a direction inclined to the horizontal.

[0120] Multiple mating surfaces are respectively in contact with the upper body 200 to form a stepped surface of matching shape on the upper body 200. The stepped surface can not only be used to achieve limitation in the width direction F1 and support limitation in the up and down directions, which is beneficial to improve the connection strength between the sill beam 10 and the upper body 200; moreover, multi-point connection can be achieved in the width direction F1 to improve connection reliability.

[0121] As shown in Figure 9, the upper body 200 includes a threshold connecting plate 71, and the threshold beam 10 has a first mating surface 17. The threshold connecting plate 71 abuts the first mating surface 17. The threshold beam 10 and the threshold connecting plate 71 are connected by a connecting structure 90. The threshold beam 10 and the threshold connecting plate 71 are respectively provided with connecting holes. The connecting structure 90 can be positioned as bolts, and the threshold connecting plate 71 and the threshold beam 10 of the upper body 200 are connected by bolts. A seal 80 is provided on the left side of the bolt. The seal 80 ensures the sealing between the upper body 200 and the lower body by compressing the threshold connecting plate 71.

[0122] As shown in FIG5 , in some embodiments, the threshold beam 10 is a frame structure and includes a first frame 101 , a second frame 102 , and a third frame 103 . In the width direction F1 of the threshold beam 10 , the first frame 101 and the third frame 103 are located on opposite sides of the second frame 102 , and the first frame 101 is provided with an avoidance groove 11 .

[0123] The sill beam 10 is a frame structure, which can effectively reduce the weight of the sill beam 10 and reduce manufacturing costs. At the same time, the cavity defined by the sill beam 10 can play a role in buffering and absorbing energy, thereby improving the reliability of the lower body 100.

[0124] The first frame body 101 is provided with an escape groove 11 . The escape groove 11 may be formed by a depression of a part of the first frame body 101 , or the first frame body 101 may include two parts spaced apart from each other, with the escape groove 11 defined between the two parts.

[0125] The first frame 101 is provided with an avoidance groove 11, and the second frame 102 and the third frame 103 are located on one side of the avoidance groove 11 in the width direction F1 of the threshold beam 10, that is, the side of the avoidance groove 11 is still provided with a frame structure, which can reduce the impact of the setting of the avoidance groove 11 on the structural strength of the threshold beam 10, so that the threshold beam 10 has sufficient structural strength to meet the basic requirements of the threshold beam 10 as a beam body.

[0126] As shown in FIG. 5 , in some embodiments, the door sill beam 10 has a cavity, and the groove wall of the avoidance groove 11 has an avoidance hole 12 communicating with the cavity.

[0127] As shown in Figure 5, the first inner wall 111 of the avoidance groove 11 has an avoidance hole 12, the first frame 101 has a cavity, and the avoidance hole 12 is connected to the cavity. When the side column of the vehicle hits the working condition, the door sill beam 10 moves toward the direction close to the battery, and the battery cooling plate current collector 21 can extend into the avoidance groove 11. A part of the battery cooling plate current collector 21 can pass through the avoidance hole 12 and extend into the cavity, thereby reducing the probability of the current collector being directly squeezed and damaged.

[0128] Of course, the bottom wall 113 of the avoidance groove 11 may also be provided with an avoidance hole 12 . The second frame body 102 has a cavity, and the avoidance hole 12 is communicated with the cavity.

[0129] As shown in Figures 5 and 9, in some embodiments, the third frame 103 forms a connecting portion 16 suitable for connecting to the upper body 200, a portion of the second frame 102 is located at the lower part of the third frame 103 and has an inclined side wall 15 extending obliquely away from the third frame 103, and the inclined side wall 15 has an installation position for installing the pipeline of the lower body 100.

[0130] As shown in Figures 5 and 9, the third frame 103 forms the connecting portion 16. The third frame 103 is connected to the upper body 200 via a connecting structure 90, thereby connecting the sill beam 10 to the upper body 200. Specifically, the connecting structure 90 may include a rivet sleeve, a bolt, and a nut. The third frame 103 is press-riveted inside, and the nut is projection-welded to the upper body 200, and the two are connected by bolts.

[0131] The upper end of the inclined side wall 15 of the second frame 102 is connected to the third frame 103, and the lower end of the inclined side wall 15 extends obliquely to the right. The pipelines of the lower body 100 are installed on the inclined side wall 15, so that the pipelines of the lower body 100 can be installed on the right side of the connecting structure 90 of the third frame 103. The pipelines of the lower body 100 and the connecting structure 90 on the third frame 103 will not overlap in the upper and lower directions. Therefore, the connecting structure 90 can be disassembled and assembled from the lower side of the third frame 103, and when the connecting structure 90 is disassembled and connected, the pipelines of the lower body 100 will not interfere with the entire disassembly and assembly movement.

[0132] In this way, the pipeline can be arranged within the width of the rocker beam 10, and there is no need to increase the space from the rocker beam 10 to the battery assembly 20 due to the arrangement of the pipeline. At the same time, the setting of the pipeline will not interfere with the disassembly and assembly of the upper and lower vehicle bodies 100, so that the upper and lower vehicle body mounting points have sufficient operating space, thereby improving the feasibility of the product.

[0133] In some embodiments, the first frame body 101 , the second frame body 102 and the third frame body 103 are integrally formed.

[0134] The overall structure of the door sill beam 10 can be an integrally formed profile structure, which is easy to manufacture and has low manufacturing cost.

[0135] According to the second aspect of the embodiment of the present application, the lower body 100 includes a sill beam 10 and a battery assembly 20 according to the above-mentioned embodiment of the present application. The sill beam 10 is located on the outside of the battery assembly 20. By adopting the above-mentioned sill beam 10, the avoidance space between the sill beam 10 and the battery assembly 20 is increased. The battery assembly 20 can be avoided when the side column collides, reducing the probability of the sill beam 10 and the battery assembly 20 being squeezed when the side column collides. At the same time, the space utilization rate of the width direction F1 of the sill beam 10 is improved, which is beneficial to improving the layout efficiency of the battery in the width direction F1 of the sill beam 10, and can improve the cruising range.

[0136] In some embodiments, the battery assembly 20 includes a battery, a battery cooling plate and a battery cooling plate current collector 21. The battery cooling plate is used to cool and dissipate heat for the battery. The battery cooling plate current collector 21 is connected to the battery cooling plate, and the battery cooling plate current collector 21 is located on the side of the battery close to the door sill beam 10. The avoidance groove 11 is suitable for being arranged relative to at least a portion of the battery cooling plate current collector 21.

[0137] Therefore, when the vehicle is hit by a side pole, the rocker beam 10 moves toward the battery, and the battery cooling plate current collector 21 can extend into the avoidance groove 11 without causing the current collector to be directly squeezed by the rocker beam 10, thereby improving the reliability of the lower body 100 and ensuring that the battery intrusion amount meets the standard when the vehicle is hit by a side pole, and the battery cooling plate current collector 21 will not be squeezed and damaged.

[0138] As shown in Figure 9, in some embodiments, the lower body 100 also includes a cover body 30 and a bottom plate 40. The cover body 30 abuts the connecting surface of the upper surface of the rocker beam 10 and is connected through a connecting structure 90. The bottom plate 40 abuts the connecting surface of the lower surface of the rocker beam 10 and is connected through a connecting structure 90.

[0139] As shown in Figures 5 and 9, the upper surface of the door sill beam 10 has a first connecting surface 13, which can abut the lower surface of the connection between the cover body 30 to achieve reliable limitation and fixation of the door sill beam 10 and the cover body 30 in the up and down directions; the lower surface of the door sill beam 10 has a second connecting surface 14, which can abut the lower surface of the connection between the bottom plate 40 of the lower vehicle body 100 to achieve reliable limitation and fixation of the door sill beam 10 and the bottom plate 40 in the up and down directions; the connection can also be provided with a sealing member 80, which can be a sealing strip, a sealant or a sealant with instant noodles, etc., thereby improving the sealing of the lower vehicle body 100, and the connecting structure 90 can improve the sealing effect and stability of the sealant 80.

[0140] As shown in FIG9 , in some embodiments, the lower body 100 further includes a brake line 50 . A side of the sill beam 10 facing away from the avoidance groove 11 has an installation position, and at least a portion of the brake line 50 is installed in the installation position.

[0141] The brake line 50 can be installed on one side of the avoidance groove 11, that is, the brake line 50 can be arranged within the width of the door sill beam 10, without increasing the space from the door sill beam 10 to the battery assembly 20 due to the arrangement of the line.

[0142] As shown in FIG9 , in some embodiments, the lower body 100 further includes a motor cooling pipe 60 , and a side of the sill beam 10 facing away from the avoidance groove 11 has an installation position, and at least a portion of the motor cooling pipe 60 is installed to the installation position.

[0143] The motor cooling pipeline 60 can be installed on one side of the avoidance groove 11, that is, the motor cooling pipeline 60 can be arranged within the width range of the door sill beam 10, without increasing the space from the door sill beam 10 to the battery assembly 20 due to the arrangement of the pipeline.

[0144] According to the vehicle body structure 1000 of the third aspect embodiment of the present application, the vehicle body structure 1000 includes an upper body 200 and a lower body 100 according to the second aspect embodiment of the present application, the lower body 100 is installed on the lower side of the upper body 200, and the rocker beam 10 is connected to the upper body 200.

[0145] In this application, vehicle body structure 1000 refers to the arrangement of the various components that make up the vehicle body. Vehicle body structure 1000 includes an upper body 200 and a lower body 100. The upper body 200 is the portion of the vehicle used to carry passengers and cargo, and may include, for example, windows, doors, and a passenger compartment. The upper body 200 and lower body 100 work together to define the passenger compartment.

[0146] The rocker beam 10 is connected to the upper body 200 via a connecting structure 90 and a seal 80 , which can fully utilize the dimensions of the rocker beam 10 in the width direction F1 to achieve efficient arrangement of the installation and sealing interfaces related to the upper and lower bodies 100; this in turn helps to improve the arrangement efficiency of the battery in the width direction F1 of the rocker beam 10, thereby increasing the cruising range.

[0147] In addition, by adopting the above-mentioned lower body 100, the avoidance space between the rocker beam 10 and the battery assembly 20 is increased, and the battery assembly 20 can be avoided when the side column hits, reducing the probability of the rocker beam 10 and the battery assembly 20 being squeezed when the side column hits.

[0148] As shown in Figures 8 and 9, in some embodiments, the upper body 200 includes a threshold connecting plate 71, the threshold beam 10 has a first mating surface 17, the threshold connecting plate 71 abuts the first mating surface 17, and the threshold beam 10 and the threshold connecting plate 71 are connected by a connecting structure 90.

[0149] In this way, the structure of the door sill beam 10 can be fully utilized to achieve the installation of the upper and lower vehicle bodies 100.

[0150] As shown in FIG. 9 , in some embodiments, the vehicle body structure 1000 further includes a seal 80 . The seal 80 extends at least along the length direction F3 of the rocker beam 10 and seals the gap between the rocker beam 10 and the rocker connecting plate 71 .

[0151] As shown in Figure 9, the threshold connecting plate 71 abuts against the first mating surface 17, and the threshold beam 10 is connected to the threshold connecting plate 71 through a connecting structure 90. The threshold beam 10 and the threshold connecting plate 71 are respectively provided with connecting holes. The connecting structure 90 can be positioned as bolts, and the threshold connecting plate 71 and the threshold beam 10 of the upper body 200 are connected by bolts. There is a seal 80 on the left side of the bolt. The seal 80 ensures the sealing between the upper body 200 and the lower body by compressing the threshold connecting plate 71.

[0152] In this way, the structure of the door sill beam 10 can be fully utilized to achieve efficient arrangement of the installation and sealing interfaces of the upper and lower vehicle bodies 100 .

[0153] As shown in Figures 8 and 9, in some embodiments, the upper body 200 includes a rocker reinforcement plate 72, the rocker beam 10 has a connecting portion 16, the upper surface of the connecting portion 16 forms a second mating surface 18, the second mating surface 18 abuts against the rocker reinforcement plate 72, and the rocker reinforcement plate 72 and the connecting portion 16 are connected by a connecting structure 90.

[0154] In this way, the structure of the door sill beam 10 can be fully utilized to achieve the installation of the upper and lower vehicle bodies 100.

[0155] As shown in Figure 8, the upper body 200 also includes a rocker inner panel 73, a rocker outer panel 74, a side panel outer panel 75 and a side panel reinforcement panel 76. The side panel outer panel 75, the side panel reinforcement panel 76 and the upper ends of the rocker inner panel 73 and the rocker connecting plate 71 are connected, and the rocker reinforcement panel 72 is connected to the rocker inner panel 73 and the rocker outer panel 74.

[0156] A vehicle according to an embodiment of the fourth aspect of the present application includes a vehicle body structure 1000 according to the above-described embodiment of the present application. Thus, by adopting the above-described vehicle body structure 1000, the clearance space between the sill beam 10 and the battery assembly 20 is increased, allowing the battery assembly 20 to be avoided in the event of a side pillar collision, reducing the probability of compression between the sill beam 10 and the battery assembly 20 in the event of a side pillar collision. Furthermore, the space utilization in the width direction F1 of the sill beam 10 is improved, which is conducive to improving the layout efficiency of the batteries in the width direction F1 of the sill beam 10 and thereby increasing the driving range.

[0157] A vehicle body structure 1000 and a vehicle having the same according to a specific embodiment of the present application will be described below with reference to the accompanying drawings.

[0158] As shown in FIG1 , the vehicle body structure 1000 includes a lower body 100 and an upper body 200 , and as shown in FIG2-9 , the lower body 100 includes a rocker beam 10, a battery assembly 20, a cover 30, a floor panel 40, a brake line 50, and a motor cooling line 60 , with the rocker beam 10 being located on the outside of the battery assembly 20 of the upper and lower body 100 in the width direction F1.

[0159] The threshold beam 10 is a frame structure and includes a first frame 101, a second frame 102 and a third frame 103. In the width direction F1 of the threshold beam 10, the first frame 101 and the third frame 103 are located on opposite sides of the second frame 102, and the first frame 101 is provided with an avoidance groove 11.

[0160] The avoidance groove 11 includes a bottom wall 113 and a first inner side wall 111 and a second inner side wall 112 that are oppositely arranged. Along a direction close to the bottom wall 113 , the first inner side wall 111 and the second inner side wall 112 extend obliquely toward each other.

[0161] The first inner side wall 111 defines a plurality of avoidance holes 12 , which are spaced apart along the length direction F3 of the door sill beam 10 . The first frame 101 has a cavity, and the avoidance holes 12 communicate with the cavity.

[0162] The upper surface of the sill beam 10 has a first mating surface 17 and a second mating surface 18 . The first mating surface 17 and the second mating surface 18 are staggered in height along the vertical direction, so that the upper surface of the sill beam 10 forms a stepped surface.

[0163] The upper surface of the sill beam 10 also has a first connecting surface 13, which can abut the lower surface of the connection between the sill beam 10 and the cover body 30 to achieve reliable limitation and fixation of the sill beam 10 and the cover body 30 in the upper and lower directions; the lower surface of the sill beam 10 has a second connecting surface 14, which can abut the lower surface of the connection between the bottom plate 40 of the lower body 100.

[0164] The battery assembly 20 includes a battery, a battery cooling plate and a battery cooling plate current collector 21. The battery cooling plate is used to cool and dissipate heat for the battery. The battery cooling plate current collector 21 is connected to the battery cooling plate, and the battery cooling plate current collector 21 is located on the side of the battery close to the door sill beam 10. The avoidance groove 11 is suitable for being arranged relative to at least a portion of the battery cooling plate current collector 21.

[0165] When the vehicle is hit by a side pole, the door sill beam 10 moves toward the battery, and the battery cooling plate current collector 21 can extend into the avoidance groove 11 without causing the current collector to be directly squeezed by the door sill beam 10, thereby improving the reliability of the lower body 100 and ensuring that the battery intrusion amount meets the standard when the vehicle is hit by a side pole, and the battery cooling plate current collector 21 will not be squeezed and damaged.

[0166] The third frame 103 is connected to the upper body 200 via the connecting structure 90, thereby connecting the sill beam 10 to the upper body 200. The inclined side wall 15 of the second frame 102 is located below the third frame 103. The upper end of the inclined side wall 15 is connected to the third frame 103, and the lower end of the inclined side wall 15 extends obliquely to the right. The pipelines of the lower body 100 are installed on the inclined side wall 15, so that the brake pipeline 50 and the motor cooling pipeline 60 can be installed on the right side of the connecting structure 90 of the third frame 103. The pipelines of the lower body 100 do not overlap with the connecting structure 90 on the third frame 103 in the vertical direction. Therefore, the connecting structure 90 can be removed and assembled from the bottom side of the third frame 103. When the connecting structure 90 is connected, the pipelines of the lower body 100 do not interfere with the entire removal and assembly process.

[0167] That is, the pipelines are arranged within the width of the sill beam 10, and there is no need to increase the space from the sill beam 10 to the battery assembly 20 due to the arrangement of the pipelines. At the same time, the setting of the pipelines will not interfere with the disassembly and assembly of the upper and lower vehicle bodies 100, so that the upper and lower vehicle body mounting points have sufficient operating space, thereby improving the feasibility of the product.

[0168] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A rocker beam of a lower vehicle body, the rocker beam having a length direction, a width direction, and a height direction, the rocker beam being on the outside of the battery assembly of the lower vehicle body in the width direction, wherein: In the width direction of the threshold beam, the threshold beam has two sides arranged opposite to each other, and a portion of one side of the threshold beam is recessed toward the other side to form an avoidance groove, and the avoidance groove is suitable for being arranged opposite to at least a portion of the battery assembly.

2. The rocker beam of the lower vehicle body according to claim 1, wherein: The groove wall of the avoidance groove is provided with an avoidance hole.

3. The rocker beam of the lower vehicle body according to claim 2, wherein: The avoidance holes include a plurality of avoidance holes, and the plurality of avoidance holes are arranged at intervals along the length direction of the threshold beam; or, the avoidance hole is one, and the avoidance hole extends along the length direction of the threshold beam.

4. The rocker beam of the lower vehicle body according to any one of claims 1 to 3, wherein: The avoidance groove includes a bottom wall and a first inner side wall and a second inner side wall that are oppositely arranged. Along a direction close to the bottom wall, the first inner side wall and the second inner side wall are inclined and extend toward each other.

5. The rocker beam of the lower vehicle body according to any one of claims 1 to 4, wherein: In the height direction of the sill beam, two opposite side surfaces of the sill beam respectively have connecting surfaces, and the two connecting surfaces are used to abut against the cover body and the bottom plate of the lower vehicle body.

6. The rocker beam of a lower vehicle body according to claim 5, wherein: The avoidance groove corresponds to the positions of the two connecting surfaces of the door sill beam.

7. The rocker beam of a lower vehicle body according to any one of claims 1 to 6, wherein: In the width direction of the sill beam, the side of the sill beam facing away from the avoidance groove has an inclined side wall and a connecting portion, the connecting portion is suitable for connecting to the upper vehicle body, one end of the inclined side wall is connected to the connecting portion, and the other end of the inclined side wall extends obliquely along the width direction of the sill beam in a direction away from the connecting portion, and the inclined side wall has an installation position for installing a pipeline of the lower vehicle body.

8. The rocker beam of a lower vehicle body according to any one of claims 1 to 7, wherein: The upper surface of the rocker beam includes a matching surface, and the matching surface is used to abut against the upper vehicle body.

9. The rocker beam of a lower vehicle body according to claim 8, wherein: The threshold beam is provided with a plurality of the matching surfaces, and the plurality of matching surfaces are arranged along the width direction of the threshold beam and staggered along the height direction of the threshold beam.

10. The rocker beam of a lower vehicle body according to any one of claims 1 to 9, wherein: The threshold beam is a frame structure and includes a first frame, a second frame and a third frame. In the width direction of the threshold beam, the first frame and the third frame are located on opposite sides of the second frame, and the first frame is provided with the avoidance groove.

11. The rocker beam of a lower vehicle body according to claim 10, wherein: The door sill beam has a cavity, and the groove wall of the avoidance groove has an avoidance hole communicated with the cavity.

12. The rocker beam of a lower vehicle body according to claim 10, wherein: The third frame forms a connecting portion suitable for connecting to the upper body, a portion of the second frame is located below the third frame and has an inclined side wall extending obliquely away from the third frame, and the inclined side wall has an installation position for installing the pipeline of the lower body.

13. The rocker beam of a lower vehicle body according to claim 10, wherein: The first frame body, the second frame body and the third frame body are integrally formed.

14. A lower vehicle body, wherein: The invention comprises a rocker beam and a battery assembly according to any one of claims 1 to 13, wherein the rocker beam is located on the outside of the battery assembly.

15. The lower vehicle body according to claim 14, wherein: The battery assembly includes a battery, a battery cooling plate and a battery cooling plate collector. The battery cooling plate is used to cool and dissipate heat for the battery. The battery cooling plate collector is connected to the battery cooling plate and is located on a side of the battery close to the door sill. The avoidance groove is suitable for being arranged relative to at least a portion of the battery cooling plate collector.

16. The lower vehicle body according to any one of claims 14-15, wherein: The lower vehicle body further includes a cover and a bottom plate. The cover abuts against a connection surface of the upper surface of the sill beam and is connected via a connection structure. The bottom plate abuts against a connection surface of the lower surface of the sill beam and is connected via a connection structure.

17. The lower vehicle body according to any one of claims 14 to 16, wherein: The lower vehicle body further includes a brake line. A side of the door sill beam facing away from the avoidance groove has a mounting position, and at least a portion of the brake line is mounted to the mounting position.

18. The lower vehicle body according to any one of claims 14 to 17, wherein: The lower vehicle body further includes a motor cooling pipeline. A side of the door sill facing away from the avoidance groove has a mounting position, and at least a portion of the motor cooling pipeline is mounted to the mounting position.

19. A vehicle body structure, wherein: The vehicle comprises an upper vehicle body and a lower vehicle body according to any one of claims 14 to 18, wherein the lower vehicle body is mounted on the lower side of the upper vehicle body, and the sill beam is connected to the upper vehicle body.

20. The vehicle body structure according to claim 19, wherein: The upper vehicle body includes a threshold connecting plate, the threshold beam has a first matching surface, the threshold connecting plate abuts against the first matching surface, and the threshold beam and the threshold connecting plate are connected via a connecting structure.

21. The vehicle body structure according to claim 20, wherein: The invention further includes a sealing member extending at least along a length direction of the rocker beam and sealing a gap between the rocker beam and the rocker connecting plate.

22. The vehicle body structure according to any one of claims 19 to 21, wherein: The upper vehicle body includes a rocker reinforcement plate, the rocker beam has a connecting portion, an upper surface of the connecting portion forms a second mating surface, the second mating surface abuts against the rocker reinforcement plate, and the rocker reinforcement plate and the connecting portion are connected via a connecting structure.

23. A vehicle, wherein The vehicle body structure comprises the vehicle body structure as claimed in any one of claims 19 to 22.

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