CN220865196U

CN220865196U - Automobile body and electric automobile

Info

Publication number: CN220865196U
Application number: CN202322112801.4U
Authority: CN
Inventors: 吴凯; 孙晓伟; 马财俊; 王小明; 杨隽祺
Original assignee: Contemporary Amperex Intelligence Technology Shanghai Ltd
Current assignee: Contemporary Amperex Intelligence Technology Shanghai Ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-04-30
Anticipated expiration: 2033-08-07

Abstract

The application provides a vehicle body and an electric vehicle, wherein the vehicle body comprises a battery frame body and a threshold beam, the battery frame body is provided with a containing cavity for containing a battery monomer, the battery frame body comprises a first supporting beam arranged on one side of the vehicle body along the width direction, and the threshold beam is arranged on the first supporting beam. According to the vehicle body, the threshold beam is arranged on the first supporting beam of the battery frame body, the threshold beam and the first supporting beam are connected into a whole, the bending rigidity of the vehicle body is effectively improved, so that the thickness of the threshold beam can be reduced to a certain extent, the weight of the threshold beam is reduced, the connecting component for connecting the battery frame body and the threshold beam is not required to be additionally arranged, the weight of the vehicle body is effectively reduced, meanwhile, the width space of the vehicle body can be fully utilized by the battery frame body, the space of the containing cavity is effectively increased, more battery monomers can be contained in the containing cavity, and the cruising performance of an electric vehicle is effectively improved.

Description

Automobile body and electric automobile

Technical Field

The application belongs to the technical field of automobiles, and particularly relates to a vehicle body and an electric automobile.

Background

With the rapid development of new energy technology, electric automobiles are increasingly favored by people. The electric automobile includes automobile body and battery, because the weight of automobile body is great, and the inner space of battery is less, leads to electric automobile's duration to descend by a wide margin, has seriously hindered electric automobile's popularization process, from this, how to improve electric automobile's duration is a technical problem that needs to be solved urgently.

Disclosure of utility model

The embodiment of the application aims to provide a vehicle body and an electric vehicle, which are used for solving the technical problem of poor cruising performance of the electric vehicle in the related art.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows: the battery frame body is provided with a containing cavity for containing a battery monomer, and comprises a first supporting beam arranged on one side of the vehicle body along the width direction; the threshold beam is mounted on the first support beam.

The vehicle body provided by the embodiment of the application has at least the following beneficial effects: according to the vehicle body provided by the embodiment of the application, the threshold beam is arranged on the first supporting beam of the battery frame body, so that the threshold beam and the first supporting beam are connected into a whole, the bending rigidity of the vehicle body is effectively improved, the thickness of the threshold beam can be reduced to a certain extent, the weight of the threshold beam is reduced, and the connecting component for connecting the battery frame body and the threshold beam is not required to be additionally arranged, so that the weight of the vehicle body is effectively reduced, meanwhile, the width space of the vehicle body can be fully utilized by the battery frame body, the space of the containing cavity is effectively increased, more battery monomers can be contained in the containing cavity, and the cruising performance of an electric vehicle is further effectively improved.

In some embodiments of the present application, the first support beam includes a first beam body and a first support base, the first support base is connected to a side of the first beam body facing away from the cavity or a side facing the cavity, and the threshold beam includes a second beam body mounted on the first support base.

By adopting the technical scheme, the threshold beam is convenient to install on the first supporting beam.

In some embodiments of the application, the second beam is mounted to the side of the first support base facing away from the bottom of the vehicle body, and the second beam is fixedly mounted to the first support base by welding, bonding and/or via fasteners.

Through adopting above-mentioned technical scheme, can reduce the holistic width that threshold roof beam and first supporting beam are connected to form, make the battery box body can make full use of the width space of automobile body more, further increased the space that holds the chamber, make hold the chamber and can hold more battery monomers to electric automobile's duration has further been improved.

In some embodiments of the application, the threshold beam further comprises a connecting piece protruding from a side of the second beam body facing the first beam body, the connecting piece being connected to the first beam body.

Through adopting above-mentioned technical scheme, the second roof beam body of threshold roof beam is installed on first supporting seat, and the connecting piece of threshold roof beam is connected on first roof beam body, has effectively improved the joint strength between threshold roof beam and the first supporting beam to the bending rigidity of automobile body has further been improved.

In some embodiments of the application, the connector is a plate, and the connector is connected to the first beam by welding, bonding and/or via a fastener.

Through adopting above-mentioned technical scheme, effectively reduced the weight of threshold roof beam, further reduced the weight of automobile body to further improved electric automobile's duration, can reduce the high space of the automobile body that the connecting piece occupy simultaneously, made the structure of automobile body become compacter.

In some embodiments of the application, the connecting member is connected to a side of the first beam body facing away from the bottom of the vehicle body.

In some embodiments of the application, a height of a side of the first beam body facing away from the bottom of the vehicle body is greater than a height of a side of the first support base facing away from the bottom of the vehicle body.

By adopting the technical scheme, the overall height formed by connecting the threshold beam and the first supporting beam can be reduced, so that the structure of the vehicle body becomes more compact.

In some embodiments of the application, the body further comprises a floor mounted to the first support beam and configured to block the cavity.

Through adopting above-mentioned technical scheme, the floor that makes the automobile body is used for holding the chamber shutoff as the battery lid, need not to additionally set up the battery lid like this, has further reduced the weight of automobile body to electric automobile's duration has further been improved.

In some embodiments of the present application, the first support beam includes a first beam body, a first support base connected to a side of the first beam body facing away from the cavity, and a second support base connected to a side of the first beam body facing toward the cavity, the threshold beam includes a second beam body mounted on the first support base, and the floor is mounted on the second support base.

Through adopting above-mentioned technical scheme, be convenient for install threshold roof beam and floor on first supporting beam to effectively realize through the appearance chamber of floor shutoff battery frame body.

In some embodiments of the present application, a pre-positioning structure is provided between the second support base and the floor.

Through adopting above-mentioned technical scheme, before carrying out the connection operation of floor and second supporting seat, can fix the floor on the second supporting seat in advance through the pre-positioning structure, be convenient for carry out the connection operation to second supporting seat and floor to the assembly efficiency of automobile body has effectively been improved.

In some embodiments of the application, the pre-positioning structure comprises a protrusion and a recess; the convex part is arranged on the floor, and the concave part is arranged on the second supporting seat; or the convex part is arranged on the second supporting seat, and the concave part is arranged on the floor; the convex part is inserted into the concave part.

Through adopting above-mentioned technical scheme, effectively realized fixing the floor on the second supporting seat in advance before carrying out the connection operation of floor and second supporting seat, simple structure has moreover effectively reduced the manufacturing cost of automobile body.

In some embodiments of the application, the vehicle body further comprises a first spacer body disposed between the first support beam and the floor; and/or the vehicle body further comprises a first sealing element, and the first sealing element is arranged between the first supporting beam and the floor.

Through adopting above-mentioned technical scheme, the first isolation layer body can separate first supporting beam and floor, effectively improved the modal performance of automobile body to effectively improved the condition that sends abnormal sound because of first supporting beam and the mutual contact friction of floor, and through setting up first sealing member between first supporting beam and floor, effectively improved the condition that foreign matter such as dust, steam get into the appearance intracavity, effectively improved the sealing performance of automobile body, thereby effectively improved electric automobile's security performance.

In some embodiments of the application, the body further comprises a support plate, and the support plate cover is arranged on one side of the frame body, which is opposite to the floor.

Through adopting above-mentioned technical scheme, make battery frame body, floor and bearing board enclose jointly and close and form the appearance chamber, effectively play the guard action to the battery monomer.

In some embodiments of the application, the vehicle body further comprises a second spacer body disposed between the first support beam and the threshold beam; and/or the vehicle body further comprises a second sealing member arranged between the first support beam and the threshold beam.

Through adopting above-mentioned technical scheme, the second isolation layer body can separate first supporting beam and threshold roof beam, has effectively improved the modal performance of automobile body to effectively improved the condition that sends abnormal sound because of first supporting beam and threshold roof beam mutual contact friction, and through setting up the second sealing member between first supporting beam and threshold roof beam, effectively improved the condition that foreign matter such as dust, steam got into the appearance intracavity, effectively improved the sealing performance of automobile body, thereby effectively improved electric automobile's security performance.

The embodiment of the application also provides an electric automobile, which comprises the automobile body.

The electric automobile provided by the embodiment of the application has at least the following beneficial effects: according to the electric automobile provided by the embodiment of the application, due to the adoption of the automobile body in any one embodiment, the cruising performance of the electric automobile is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an electric vehicle according to an embodiment of the present application;

fig. 2 is a schematic structural view of a vehicle body according to an embodiment of the present application;

FIG. 3 is a schematic view of an exploded structure of the body shown in FIG. 2;

FIG. 4 is a schematic side view of the body shown in FIG. 2;

FIG. 5 is a schematic cross-sectional view of the body of FIG. 4 taken along line A-A;

fig. 6 is an enlarged schematic view of the structure of the vehicle body shown in fig. 5 at B.

Wherein, each reference sign in the figure:

1000. An electric automobile;

100. A vehicle body; 110. a battery frame; 111. a first support beam; 1111. a first beam body; 1112. a first support base; 1113. a second support base; 112. a second support beam; 1121. a third beam body; 1122. a third support base; 113. a cavity; 120. a threshold beam; 121. a second beam body; 122. a connecting piece; 130. a floor; 140. a bearing plate; 150. a pre-positioning structure; 151. a convex portion; 152. a concave portion; 160. a first separator; 170. a first seal; 180. a second separator; 190. and a second seal.

200. A battery;

300. an electric drive.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The electric automobile refers to an automobile taking electric energy as a power source under all working conditions or partial working conditions. The electric vehicle includes a vehicle body, a battery generally mounted at the bottom of the vehicle body, and an electric drive device generally mounted at the front or rear of the vehicle body, the battery being used to supply electric power to the electric drive device, and the electric drive device being used to convert the electric power into mechanical power to drive the electric vehicle to travel.

In the related art, the battery generally includes box and battery monomer, and battery monomer holds in the box, and the threshold roof beam of box and automobile body passes through linking bridge connection, however, because the linking bridge needs to occupy more spaces, can lead to the inside space of box to reduce, and then lead to the free quantity of battery that the box can hold to reduce, and linking bridge's weight is great moreover, can lead to the weight increase of automobile body, in addition, in order to improve the bending rigidity of automobile body, generally need add thick design to the threshold roof beam of automobile body, but can lead to the weight further increase of automobile body like this to lead to electric automobile's duration performance to drop by a wide margin.

In order to improve the cruising performance of the electric automobile, the threshold beam is arranged on the first supporting beam of the battery frame body, so that the threshold beam and the first supporting beam are connected into a whole, the bending rigidity of the automobile body is effectively improved, the thickness of the threshold beam can be reduced to a certain extent, the weight of the threshold beam is reduced, and the connecting component for connecting the battery frame body and the threshold beam is not required to be additionally arranged, so that the weight of the automobile body is effectively reduced, meanwhile, the width space of the automobile body can be fully utilized by the battery frame body, the space of the containing cavity is effectively increased, more battery monomers can be contained in the containing cavity, and the cruising performance of the electric automobile is further effectively improved.

The electric vehicle 1000 disclosed in the embodiment of the application can be a pure electric vehicle, a hybrid electric vehicle or an extended range vehicle. The electric vehicle 1000 may also be a front-drive vehicle, a rear-drive vehicle, or a four-drive vehicle. Referring to fig. 1, fig. 1 is a schematic structural diagram of an electric vehicle 1000 according to an embodiment of the application. The electric vehicle 1000 includes a vehicle body 100, a battery 200, and an electric drive device 300.

The vehicle body 100 is a main support member of the electric vehicle 1000. The vehicle body 100 has a cabin for accommodating the electric drive device 300, the transmission, the cooling device, and the like of the electric vehicle 1000, and a cabin for providing an operation space and a riding space for a rider. When the electric vehicle 1000 is a front-drive vehicle, the cabin is provided in the front of the vehicle body 100, that is, the cabin is a front cabin; when the electric vehicle 1000 is a rear-drive vehicle, the cabin is provided at the rear of the vehicle body 100, that is, the cabin is a rear cabin; when the electric vehicle 1000 is a four-wheel drive vehicle, the cabins are divided into a front cabin provided at the front of the vehicle body 100 and a rear cabin provided at the rear of the vehicle body 100. The passenger compartment is disposed between the front and rear of the vehicle body 100.

The battery 200 is used to supply electric power to the electric drive device 300, and the battery 200 may be disposed at the bottom of the vehicle body 100, for example, the battery 200 is disposed below the cabin of the vehicle body 100. The battery 200 includes a plurality of battery cells, and the plurality of battery cells can be connected in series or parallel or in series-parallel, wherein the series-parallel refers to that the plurality of battery cells are connected in series or parallel. The plurality of battery cells can be directly connected in series, in parallel or in series-parallel, and then the plurality of battery cells are integrally formed and mounted on the vehicle body 100. Of course, the battery 200 may also be a battery module formed by connecting a plurality of battery cells in series, parallel or series-parallel connection, and then connecting a plurality of battery modules in series, parallel or series-parallel connection to form a whole and be mounted on the vehicle body 100. The battery 200 may also include other functional components, for example, the battery 200 may also include a bussing component for making electrical connection between a plurality of battery cells.

Each battery cell can be a secondary battery or a primary battery, wherein the secondary battery refers to a battery cell which can activate an active material in a charging manner after the battery cell discharges and can be continuously used, and the primary battery refers to a battery cell which can not activate the active material in a charging manner after the electric energy of the battery cell is exhausted and can be continuously used; the battery cell may also be, but is not limited to, a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, and the like. The battery cell may be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell or other shaped battery cell, and the prismatic battery cell includes a square-case battery cell, a blade-shaped battery cell, a polygonal-prism battery cell, for example, a hexagonal-prism battery cell, etc., and the present application is not particularly limited.

The electric driving device 300 is used for converting electric energy provided by the battery 200 into mechanical energy and outputting the mechanical energy to wheels of the electric vehicle 1000 to drive the electric vehicle 1000 to travel. Of course, in the case where the electric vehicle 1000 has a kinetic energy recovery function, the electric drive device 300 may be configured to convert mechanical energy into electric energy as a generator and to transmit and store the generated electric energy in the battery 200. The electric driving device 300 is installed in the cabin, specifically, when the electric vehicle 1000 is a front-drive vehicle, the electric driving device 300 is installed in the front of the electric vehicle 1000 and is used for outputting the mechanical energy to the front wheels of the electric vehicle 1000 to drive the electric vehicle 1000 to travel; when the electric vehicle 1000 is a rear-drive vehicle, the electric driving device 300 is mounted at the rear of the electric vehicle 1000 and is used for outputting the mechanical energy to the rear wheels of the electric vehicle 1000 so as to drive the electric vehicle 1000 to run; when the electric vehicle 1000 is a four-wheel drive vehicle, there may be two electric driving apparatuses 300, one electric driving apparatus 300 is mounted on the front of the electric vehicle 1000 and is used for outputting the mechanical energy to the front wheels of the electric vehicle 1000, and the other electric driving apparatus 300 is mounted on the rear of the electric vehicle 1000 and is used for outputting the mechanical energy to the rear wheels of the electric vehicle 1000, so as to drive the electric vehicle 1000 to travel.

The vehicle body 100 provided in the embodiment of the present application is described below with reference to the drawings.

Referring to fig. 2 to 6, the embodiment of the application provides a vehicle body 100, which includes a battery frame 110 and a threshold beam 120, wherein the battery frame 110 has a cavity 113 for accommodating a battery unit, the battery frame 110 includes a first support beam 111 disposed at one side of the vehicle body 100 along a width direction, and the threshold beam 120 is mounted on the first support beam 111.

For convenience of description, a direction parallel to an axial direction of a wheel is defined as a width direction of the vehicle body 100, the axial direction refers to an axial direction of the wheel when the electric vehicle 1000 travels in any straight line, such as an X direction shown in fig. 1, 2, 3, and 5, a direction perpendicular to the axial direction and parallel to a support plane of the electric vehicle 1000 is defined as a length direction of the vehicle body 100, and the support plane refers to a plane tangential to a side surface of the electric vehicle 1000 facing away from the vehicle body 100, such as a Y direction shown in fig. 1 to 4, of all wheels in a traveling state or a stationary state of the electric vehicle 1000, and a direction perpendicular to the width direction and the length direction is defined as a height direction of the vehicle body 100, such as a Z direction shown in fig. 2 to 5. The two sides of the vehicle body 100 along the width direction thereof are the left side and the right side of the vehicle body 100, the two sides of the vehicle body 100 along the length direction thereof are the front side and the rear side of the vehicle body 100, the two sides of the vehicle body 100 along the height direction thereof are the bottom and the top of the vehicle body 100, wherein the bottom is the part of the vehicle body 100 close to the supporting plane, and the top is the part of the vehicle body 100 far away from the supporting plane.

The battery housing 110 is a member for providing an installation environment of the battery cell and for providing a supporting force to the battery cell, and it is understood that the battery housing 110 is made of a rigid material, which may be, but is not limited to, aluminum alloy, iron, stainless steel, etc. The first support beams 111 are part of the support members of the battery housing 110, and the number of the first support beams 111 may be two, one first support beam 111 being provided on the left side of the vehicle body 100, and the other first support beam 111 being provided on the right side of the vehicle body 100. It is understood that the dimension of the first support beam 111 in the width direction of the vehicle body 100 is smaller than the dimension of the first support beam 111 in the length direction of the vehicle body 100, for example, the first support beam 111 is in a straight line structure and extends in the length direction of the vehicle body 100, and for example, the first support beam 111 is in a bent structure and extends in a meandering direction in the length direction of the vehicle body 100. In some embodiments, in order to reduce the weight of the battery housing 110, the first support beam 111 may have a hollow structure, i.e., a cavity is formed inside the first support beam 111. The battery frame 110 may further include a second support beam 112 connected between the two first support beams 111, the second support beam 112 being another part of the support member of the battery frame 110, the number of the second support beams 112 may be two, the two second support beams 112 may be spaced apart along the length direction of the vehicle body 100, and the two first support beams 111 and the two second support beams 112 may enclose the cavity 113. It is understood that the dimension of the second support beam 112 in the longitudinal direction of the vehicle body 100 is smaller than the dimension of the second support beam 112 in the width direction of the vehicle body 100, for example, the second support beam 112 is in a straight line structure and extends in the width direction of the vehicle body 100, and for example, the second support beam 112 is in a bent structure and extends in a meandering manner in the width direction of the vehicle body 100. In some embodiments, in order to reduce the weight of the battery housing 110, the second support beam 112 may have a hollow structure, i.e., a cavity is formed inside the second support beam 112. In some embodiments, the battery frame 110 may be an integrally formed member, for example, the two first support beams 111 and the two second support beams 112 are integrally formed through a die casting process. In other embodiments, the battery frame 110 may be a separate member, for example, the two first support beams 111 and the two second support beams 112 are separately formed and then connected to each other, and the connection between the first support beams 111 and the second support beams 112 may be, but not limited to, welding, fastening, etc.

The rocker 120 is a main support member of the vehicle body 100 and serves to support and reinforce the entire vehicle body 100, and it is understood that the rocker 120 is made of a rigid material, which may be, but is not limited to, aluminum alloy, iron, stainless steel, or the like. The number of the rocker beams 120 may be two, one rocker beam 120 is disposed on the left side of the vehicle body 100 and connected with the first support beam 111 located on the left side of the vehicle body 100, and the other rocker beam 120 is disposed on the right side of the vehicle body 100 and connected with the first support beam 111 located on the right side of the vehicle body 100, and in a normal use state of the electric vehicle 1000, the rocker beam 120 is located below the door of the electric vehicle 1000 in the height direction of the vehicle body 100. It is understood that the dimension of the rocker 120 in the width direction of the vehicle body 100 is smaller than the dimension of the rocker 120 in the length direction of the vehicle body 100, for example, the rocker 120 is in a straight line structure and extends in the length direction of the vehicle body 100, and for example, the rocker 120 is in a bent structure and extends in a meandering direction in the length direction of the vehicle body 100. In some embodiments, in order to reduce the weight of the vehicle body 100, the rocker 120 may have a hollow structure, i.e., a cavity is formed in the interior of the rocker 120. In some embodiments, the rocker 120 may be an integrally formed member, for example, the rocker 120 is integrally formed by a die casting process. In other embodiments, the rocker 120 may be a separate piece, for example, the rocker 120 may comprise multiple sections that are individually formed and then joined to one another to form a unitary body.

The threshold beam 120 is mounted on the first support beam 111, in other words, the threshold beam 120 is directly connected to the first support beam 111, and the connection between the threshold beam 120 and the first support beam 111 may be, but is not limited to, welding, fastening, etc. In some embodiments, the vehicle body 100 may further include a side wall panel (not shown) connected to the rocker 120, and a surface of the side wall panel facing away from the rocker 120 forms a part of an outer side wall surface of the vehicle body 100, and the side wall panel and the rocker 120 may be connected by, but not limited to, welding, fastening, or the like.

According to the vehicle body 100 provided by the embodiment of the application, the threshold beam 120 is arranged on the first supporting beam 111 of the battery frame 110, so that the threshold beam 120 and the first supporting beam 111 are connected into a whole, and the bending rigidity of the vehicle body 100 is effectively improved, so that the thickness of the threshold beam 120 is reduced to a certain extent, the weight of the threshold beam 120 is reduced, and no additional connecting part for connecting the battery frame 110 and the threshold beam 120 is required, so that the weight of the vehicle body 100 is effectively reduced, the battery frame 110 can fully utilize the width space of the vehicle body 100, the space of the containing cavity 113 is effectively increased, more battery cells can be contained in the containing cavity 113, and the cruising performance of the electric vehicle 1000 is further effectively improved.

In some embodiments of the present application, referring to fig. 3 to 6, the first support beam 111 includes a first beam 1111 and a first support seat 1112, the first support seat 1112 is connected to a side of the first beam 1111 facing away from the cavity 113 or a side facing the cavity 113, the threshold beam 120 includes a second beam 121, and the second beam 121 is mounted on the first support seat 1112.

The first beam body 1111 is a main supporting member of the first supporting beam 111, and the first supporting seat 1112 is used to provide an installation environment of the threshold beam 120. In some embodiments, the first supporting seat 1112 is connected to a side of the first beam 1111 facing away from the cavity 113, so that the second beam 121 does not occupy the space of the cavity 113, which effectively improves the space utilization of the cavity 113, and enables the cavity 113 to accommodate more battery cells, thereby further improving the cruising performance of the electric vehicle 1000. In other embodiments, the first support base 1112 is connected to a side of the first beam 1111 facing the cavity 113. In some embodiments, the first support base 1112 may have a strip structure and extend along the length direction of the first beam 1111. In other embodiments, the first support seat 1112 may include a plurality of first seats (not shown) spaced apart along the length of the first beam 1111 and connected to the threshold beam 120. In some embodiments, the first beam 1111 and the first support seat 1112 may be integrally formed components, for example, the first beam 1111 and the first support seat 1112 may be integrally formed through a die casting process. In other embodiments, the first beam 1111 and the first support seat 1112 may be separate members, for example, the first beam 1111 and the first support seat 1112 may be separately formed and then connected to each other, and the connection between the first beam 1111 and the first support seat 1112 may be, but is not limited to, welding, fastening, etc. In the case where the first beam 1111 and the first support seat 1112 are separate members, the material of the first beam 1111 and the material of the first support seat 1112 may be the same, for example, the material of the first beam 1111 and the material of the first support seat 1112 may be an aluminum alloy, the material of the first beam 1111 and the material of the first support seat 1112 may be different, for example, the material of the first beam 1111 is an aluminum alloy, and the material of the first support seat 1112 is a stainless steel.

The second beam body 121 is a main supporting member of the rocker beam 120, and the second beam body 121 may be mounted on the first support seat 1112 at other locations than the location for connecting the first beam body 1111, for example, the rocker beam 120 is mounted on a side of the first support seat 1112 facing away from the bottom of the vehicle body 100; as another example, the threshold beam 120 is mounted on a side of the first support base 1112 facing away from the first beam body 1111.

By adopting the above-described technical scheme, the rocker beam 120 is conveniently mounted on the first support beam 111.

In some embodiments of the present application, referring to fig. 5 and 6, the second beam 121 is mounted on a side of the first support seat 1112 facing away from the bottom of the vehicle body 100, and the second beam 121 is fixedly mounted on the first support seat 1112 by welding, bonding and/or via a fixing member. The fixing member may be, but not limited to, a bolt, a screw, a rivet, etc.

Through adopting above-mentioned technical scheme, can reduce the holistic width that threshold roof beam 120 and first supporting beam 111 are connected and are formed, make battery frame 110 can make full use of automobile body 100's width space more, further increased the space in appearance chamber 113, make appearance chamber 113 can hold more battery monomers to further improved electric automobile 1000's duration.

In some embodiments of the present application, referring to fig. 3 to 6, the threshold beam 120 further includes a connecting member 122 protruding from a side of the second beam 121 facing the first beam 1111, and the connecting member 122 is connected to the first beam 1111.

The connection member 122 is a member for connecting the first beam 1111, a portion of the connection member 122 is connected to the second beam 121, the connection member 122 may be connected to other portions of the second beam 121 than the portion for connecting the first support seat 1112, for example, the connection member 122 is connected to a side of the second beam 121 facing away from the bottom of the vehicle body 100; as another example, the connection member 122 is connected to a side of the second beam 121 facing the first beam 1111. It will be appreciated that the connecting member 122 may be directly connected to the second beam body 121, and that the connecting member 122 may be indirectly connected to the second beam body 121 through other portions of the rocker beam 120. Another portion of the connection member 122 protrudes toward the first beam 1111 from a side of the second beam 121 facing the first beam 1111, and the portion is used to connect the first beam 1111, and the connection between the portion and the first beam 1111 may be, but not limited to, welding, fastening connection, etc. In some embodiments, the connection member 122 may have a bar-like structure and extend along the length direction of the second beam 121. In other embodiments, the connection member 122 may include a plurality of connection portions (not shown) spaced apart along the length of the second beam 121 and connected to the first beam 1111. In some embodiments, the second beam 121 and the connection piece 122 may be integrally formed components, for example, the second beam 121 and the connection piece 122 are integrally formed through a die casting process. In other embodiments, the second beam 121 and the connecting member 122 may be separate members, for example, the second beam 121 and the connecting member 122 may be connected to each other after being formed separately, and the connection between the second beam 121 and the connecting member 122 may be, but is not limited to, welding, fastening, etc. In the case where the second beam body 121 and the connecting member 122 are separate members, the material of the second beam body 121 and the material of the connecting member 122 may be the same, for example, the material of the second beam body 121 and the material of the connecting member 122 may be an aluminum alloy, the material of the second beam body 121 and the material of the connecting member 122 may be different, for example, the material of the second beam body 121 is an aluminum alloy, and the material of the connecting member 122 is stainless steel.

Through adopting above-mentioned technical scheme, the second roof beam body 121 of threshold roof beam 120 is installed on first supporting seat 1112, and the connecting piece 122 of threshold roof beam 120 is connected on first roof beam body 1111, has effectively improved the joint strength between threshold roof beam 120 and the first supporting beam 111 to further improved the bending rigidity of automobile body 100.

In some embodiments of the present application, referring to fig. 5 and 6, the connecting member 122 is a plate, and the connecting member 122 is connected to the first beam 1111 by welding, bonding and/or via a fixing member. The fixing member may be, but not limited to, a bolt, a screw, a rivet, etc.

In other words, the connecting member 122 has a plate-like structure, and the connecting member 122 may be a flat plate or a plate with a regular or irregular concave-convex structure, which may be specifically determined according to practical application requirements. As can be appreciated, in the case where the connecting member 122 is connected to the side of the first beam 1111 facing away from the bottom of the vehicle body 100, the plate surface of the connecting member 122 is fitted to the side of the first beam 1111 facing away from the bottom of the vehicle body 100.

Through adopting above-mentioned technical scheme, effectively reduced the weight of threshold roof beam 120, further reduced the weight of automobile body 100 to further improved the duration of electric automobile 1000, can reduce the high space of automobile body 100 that connecting piece 122 occupy simultaneously, made the structure of automobile body 100 become compacter.

In some embodiments of the present application, referring to fig. 5 and 6, the connecting member 122 is connected to a side of the first beam 1111 facing away from the bottom of the vehicle body 100.

In some embodiments of the present application, referring to fig. 5 and 6, the height of the side of the first beam 1111 facing away from the bottom of the vehicle body 100 is greater than the height of the side of the first support seat 1112 facing away from the bottom of the vehicle body 100.

In other words, with the support plane as a reference surface, the distance from the reference surface on the side of the first beam 1111 facing away from the bottom of the vehicle body 100 in the height direction of the vehicle body 100 is greater than the distance from the reference surface on the side of the first support seat 1112 facing away from the bottom of the vehicle body 100. In this way, the first beam 1111 and the first support seat 1112 are connected to form a stepped structure, and when the second beam 121 is mounted on the side of the first support seat 1112 facing away from the bottom of the vehicle body 100, at least part of the second beam 121 overlaps the first beam 1111 in the width direction of the vehicle body 100.

By adopting the above-described technical scheme, the overall height of the rocker beam 120 formed by being connected with the first support beam 111 can be reduced, making the structure of the vehicle body 100 more compact.

In some embodiments of the present application, referring to fig. 2 to 6, the vehicle body 100 further includes a floor 130, and the floor 130 is mounted on the first support beam 111 and is used for sealing the cavity 113.

The floor 130 is a member for providing an installation space for a member provided in the cockpit, for example, a seat of the electric vehicle 1000 is installed on the floor 130. The floor 130 serves to support the above-mentioned components and passengers, and in this embodiment, the floor 130 may also serve as a battery cover for blocking the receiving space 113 of the battery housing 110. The floor 130 is made of a rigid material, which may be, but is not limited to, aluminum alloy, iron, stainless steel, etc. The floor 130 is mounted on the first support beams 111, and it is understood that in the case where the number of the first support beams 111 is two, one side of the floor 130 in the width direction of the vehicle body 100 is mounted on one first support beam 111, the other side of the floor 130 in the width direction of the vehicle body 100 is mounted on the other first support beam 111, and the connection between the floor 130 and the first support beams 111 may be, but is not limited to, welding, fastening, or the like. In some embodiments, in the case where the battery housing 110 includes the second support beams 112 and the number of the second support beams 112 is two, the floor 130 is mounted on one second support beam 112 along one side of the length direction of the vehicle body 100, the floor 130 is mounted on the other second support beam 112 along the other side of the length direction of the vehicle body 100, and the connection between the floor 130 and the second support beams 112 may be, but is not limited to, welding, fastening, or the like. In some embodiments, the floor 130 may be an integrally formed member, for example, the floor 130 is integrally formed through a die casting process. In other embodiments, the floor 130 may be a separate piece, for example, the floor 130 may comprise multiple sections that are individually formed and then joined together as a single unit.

Through adopting above-mentioned technical scheme, make the floor 130 of automobile body 100 be used for the shutoff of appearance chamber 113 as the battery lid, need not to set up the battery lid in addition like this, further reduced the weight of automobile body 100 to further improved the duration of electric automobile 1000.

In some embodiments of the present application, referring to fig. 5 and 6, the first support beam 111 includes a first beam 1111, a first support seat 1112 connected to a side of the first beam 1111 facing away from the cavity 113, and a second support seat 1113 connected to a side of the first beam 1111 facing toward the cavity 113, the threshold beam 120 includes a second beam 121, the second beam 121 is mounted on the first support seat 1112, and the floor 130 is mounted on the second support seat 1113.

The second support 1113 is used to provide an installation environment for the floor 130. In some embodiments, the second support 1113 may have a bar-like structure and extend along the length of the first beam 1111. In other embodiments, the second support 1113 may include a plurality of second seats (not shown) spaced apart along the length of the first beam 1111 and connected to the floor 130. In some embodiments, the first beam 1111, the first support seat 1112, and the second support seat 1113 may be integrally formed components, for example, the first beam 1111, the first support seat 1112, and the second support seat 1113 are integrally formed through a die casting process. In other embodiments, the first beam 1111, the first support seat 1112 and the second support seat 1113 may be separate members, for example, the first beam 1111, the first support seat 1112 and the second support seat 1113 may be separately formed and then connected to each other, and the connection manner between the first beam 1111, the first support seat 1112 and the second support seat 1113 may be, but is not limited to, welding, fastening connection, etc. In the case where the first beam 1111, the first support seat 1112, and the second support seat 1113 are separate members, the material of the first beam 1111, the material of the first support seat 1112, and the material of the second support seat 1113 may be the same, for example, the material of the first beam 1111, the material of the first support seat 1112, and the material of the second support seat 1113 may be aluminum alloy, the material of the first beam 1111, the material of the first support seat 1112, and the material of the second support seat 1113 may be different, for example, the material of the first beam 1111 may be aluminum alloy, and the material of the first support seat 1112 and the material of the second support seat 1113 may be stainless steel.

In the case where the battery frame 110 includes the second support beams 112 and the number of the first support beams 111 and the number of the second support beams 112 are two, the second support beams 112 include the third beam 1121 and the third support mount 1122, the third beam 1121 is connected between the two first support beams 111, and the third support mount 1122 is connected to a side of the third beam 1121 facing the receiving chamber 113. The floor 130 is mounted on the third support mount 1122 of one second support beam 112 along one side of the length direction of the vehicle body 100, and the floor 130 is mounted on the third support mount 1122 of the other second support beam 112 along the other side of the length direction of the vehicle body 100. The third beam 1121 is a main support member of the second support beam 112, and the third support mount 1122 is used to provide a mounting environment for the floor 130. In some embodiments, the third support 1122 may have a strip structure and extend along the length direction of the third beam 1121. In other embodiments, the third support 1122 may include a plurality of third seats (not shown) spaced apart along the length of the third beam 1121 and connected to the floor 130. In some embodiments, third beam 1121 and third support 1122 may be integrally formed as a single piece, e.g., third beam 1121 and third support 1122 may be integrally formed by a die casting process. In other embodiments, the third beam 1121 and the third support 1122 may be separate members, for example, the third beam 1121 and the third support 1122 may be separately formed and then connected to each other, and the connection between the third beam 1121 and the third support 1122 may be, but is not limited to, welding, fastening, etc. In the case where the third beam 1121 and the third support 1122 are separate members, the material of the third beam 1121 and the material of the third support 1122 may be the same, for example, the material of the third beam 1121 and the material of the third support 1122 may be an aluminum alloy, the material of the third beam 1121 and the material of the third support 1122 may be different, for example, the material of the third beam 1121 and the material of the third support 1122 may be an aluminum alloy, and the material of the third support 1122 may be stainless steel.

By adopting the above technical scheme, the threshold beam 120 and the floor 130 are conveniently installed on the first support beam 111, and the capacity 113 of the battery frame 110 is effectively blocked by the floor 130.

In some embodiments of the present application, referring to fig. 6, a pre-positioning structure 150 is disposed between the second support 1113 and the floor 130.

The pre-positioning structure 150 is a structure for limiting the position of the floor 130 in the case where the floor 130 is placed on the second supporting seat 1113. The pre-positioning structure 150 may be, but is not limited to, a concave-convex structure, a magnetic attraction structure, a positioning pin structure, etc.

Through the above technical scheme, before the connection operation between the floor 130 and the second supporting seat 1113 is performed, the floor 130 can be pre-fixed on the second supporting seat 1113 through the pre-positioning structure 150, so that the connection operation between the second supporting seat 1113 and the floor 130 is facilitated, and the assembly efficiency of the vehicle body 100 is effectively improved.

In some embodiments of the present application, referring to fig. 6, the pre-positioning structure 150 includes a protrusion 151 and a recess 152, the protrusion 151 is disposed on the floor 130, the recess 152 is disposed on the second supporting seat 1113, and the protrusion 151 is inserted into the recess 152.

In other words, in the present embodiment, the pre-positioning structure 150 is a concave-convex structure. The convex portion 151 is a portion protruding from the plate surface of the floor 130, the concave portion 152 is a portion recessed on the surface of the second supporting portion, the convex portion 151 may be, but not limited to, a convex strip, a convex bump, or the like, the shape of the concave portion 152 is adapted to the shape of the convex portion 151, for example, the convex portion 151 is a convex strip, and the concave portion 152 is a bar-shaped groove.

When the floor panel 130 is placed on the second support base 1113, the protruding portion 151 is inserted into the recess 152, and it is understood that when the protruding portion 151 is inserted into the recess 152, the outer side wall of the protruding portion 151 is attached to the inner side wall of the recess 152, and that, when the assembly error is considered, a small gap may exist between the outer side wall of the protruding portion 151 and the inner side wall of the recess 152.

In other embodiments of the present application, the pre-positioning structure 150 includes a protrusion 151 and a recess 152, the protrusion 151 is disposed on the second supporting seat 1113, the recess 152 is disposed on the floor 130, and the protrusion 151 is inserted into the recess 152. The convex portion 151 is a portion protruding from the surface of the second support portion, and the concave portion 152 is a portion recessed in the plate surface of the floor panel 130.

By adopting the above technical scheme, the floor 130 is effectively pre-fixed on the second supporting seat 1113 before the connection operation of the floor 130 and the second supporting seat 1113, and the structure is simple, so that the manufacturing cost of the vehicle body 100 is effectively reduced.

In some embodiments of the present application, referring to fig. 6, the vehicle body 100 further includes a first insulation layer 160, and the first insulation layer 160 is disposed between the first support beam 111 and the floor 130.

The first spacer layer 160 is a member for spacing the first support beam 111 from the floor 130. The first spacer layer 160 may be made of a flexible material, which may be, but is not limited to, an adhesive, rubber, silicone, sponge, foam, etc. In some embodiments, the first spacer layer 160 may be formed by applying adhesive to a portion of the first support beam 111 facing the floor 130 and/or to a portion of the floor 130 facing the first support beam 111, and curing the adhesive. In other embodiments, the first spacer body 160 is a prefabricated member, the first spacer body 160 is placed on the first support beam 111, and then the floor 130 is placed on the first spacer body 160 and the floor 130 and the first support beam 111 are connected such that the floor 130 and the first support beam 111 cooperate to sandwich the first spacer body 160, thereby separating the first support beam 111 from the floor 130.

In the case where the battery frame 110 includes the second support beam 112 and the floor 130 is connected to the second support beam 112, the vehicle body 100 may further include a third spacer body (not shown) disposed between the second support beam 112 and the floor 130 to separate the second support beam 112 from the floor 130. The third spacer body and the first spacer body 160 may be integrally formed members, for example, the third spacer body and the first spacer body 160 are integrally formed through an injection molding process.

By adopting the technical scheme, the first supporting beam 111 and the floor 130 can be separated, and the modal performance of the vehicle body 100 is effectively improved, so that the situation that abnormal sound is generated due to mutual contact friction between the first supporting beam 111 and the floor 130 is effectively improved.

In some embodiments of the present application, referring to fig. 6, the vehicle body 100 further includes a first sealing member 170, and the first sealing member 170 is disposed between the first support beam 111 and the floor 130.

The first seal 170 is a member for blocking a gap between the first support beam 111 and the floor 130. The first seal 170 is made of a sealing material, which may be, but is not limited to, rubber, silicone, adhesive, etc.

In the case where the battery housing 110 includes the second support beam 112 and the floor 130 is connected to the second support beam 112, the vehicle body 100 may further include a third seal (not shown) disposed between the second support beam 112 and the floor 130 to block a gap between the second support beam 112 and the floor 130. The third seal and the first seal 170 may be integrally formed members, for example, the third seal and the first seal 170 are integrally formed as a sealing ring through an injection molding process.

By adopting the technical scheme, the condition that foreign matters such as dust, water vapor and the like enter the containing cavity 113 is effectively improved, and the sealing performance of the vehicle body 100 is effectively improved, so that the safety performance of the electric vehicle 1000 is effectively improved.

In some embodiments of the present application, referring to fig. 3 to 6, the vehicle body 100 further includes a supporting plate 140, and the supporting plate 140 is covered on a side of the frame body facing away from the floor 130.

The support plate 140 is used to provide a battery cell and other components disposed within the cavity 113. The support plate 140 is also used to block the cavity 113. It will be appreciated that the floor 130 blocks one port of the cavity 113 and the support plate 140 blocks the other port of the cavity 113. The carrier plate 140 is made of a rigid material, which may be, but is not limited to, aluminum alloy, iron, stainless steel, etc. The support plates 140 are mounted on the first support beams 111, and it is understood that in case that the number of the first support beams 111 is two, one side of the support plates 140 in the width direction of the vehicle body 100 is mounted on one first support beam 111, the other side of the support plates 140 in the width direction of the vehicle body 100 is mounted on the other first support beam 111, and the connection manner between the support plates 140 and the first support beams 111 may be, but not limited to, welding, fastening connection, or the like. In some embodiments, in the case where the battery frame 110 includes the second support beams 112 and the number of the second support beams 112 is two, the support plate 140 is mounted on one second support beam 112 along one side of the length direction of the vehicle body 100, and the support plate 140 is mounted on the other second support beam 112 along the other side of the length direction of the vehicle body 100, and the connection between the support plate 140 and the second support beams 112 may be, but is not limited to, welding, fastening, or the like. In some embodiments, the carrier plate 140 may be an integrally formed member, for example, the carrier plate 140 is integrally formed by a die casting process. In other embodiments, the carrier plate 140 may be a separate piece, for example, the carrier plate 140 may comprise multiple sections, each of which are separately formed and then integrally connected to each other.

By adopting the technical scheme, the battery frame 110, the floor 130 and the bearing plate 140 are enclosed together to form the containing cavity 113, so that the protection effect on the battery monomers is effectively achieved.

In some embodiments of the present application, referring to fig. 6, the vehicle body 100 further includes a second insulation layer 180, and the second insulation layer 180 is disposed between the first support beam 111 and the threshold beam 120.

The second spacer 180 is a member for separating the first support beam 111 from the threshold beam 120. It will be appreciated that in the case where the threshold beam 120 includes the second beam body 121 and the connection member 122, the second spacer layer body 180 may cover only the connection interface between the second beam body 121 and the first support beam 111, the second spacer layer body 180 may cover only the connection interface between the connection member 122 and the first support beam 111, and the second spacer layer body 180 may cover both the connection interface between the second beam body 121 and the first support beam 111 and the connection interface between the connection member 122 and the first support beam 111. The second spacer 180 may be made of a flexible material, which may be, but is not limited to, an adhesive, rubber, silicone, sponge, foam, etc. In some embodiments, the second insulating layer 180 may be formed by applying adhesive to the portion of the first support beam 111 facing the threshold beam 120 and/or to the portion of the threshold beam 120 facing the first support beam 111, after the adhesive is solidified. In other embodiments, the second spacer layer body 180 is a prefabricated member, the second spacer layer body 180 is placed on the first support beam 111, and then the threshold beam 120 is placed on the second spacer layer body 180 and the threshold beam 120 and the first support beam 111 are connected such that the threshold beam 120 and the first support beam 111 cooperate to sandwich the second spacer layer body 180, thereby spacing the first support beam 111 from the threshold beam 120.

By adopting the technical scheme, the first supporting beam 111 and the threshold beam 120 can be separated, and the modal performance of the vehicle body 100 is effectively improved, so that the situation that abnormal sound is generated due to mutual contact friction between the first supporting beam 111 and the threshold beam 120 is effectively improved.

In some embodiments of the present application, referring to fig. 6, the vehicle body 100 further includes a second seal 190, the second seal 190 being disposed between the first support beam 111 and the rocker beam 120.

The second seal 190 is a member for blocking the gap between the first support beam 111 and the threshold beam 120. The first seal 170 is made of a sealing material, which may be, but is not limited to, rubber, silicone, adhesive, etc. In some embodiments, the second seal 190 is in an annular configuration, with the ring of the second seal 190 extending along the rim of the battery housing 110. In the case where the rocker beam 120 includes the second beam body 121 and the connection member 122, the second seal member 190 may be disposed between the second beam body 121 and the first support beam 111, or may be disposed between the connection member 122 and the first support beam 111.

In some embodiments of the present application, referring to fig. 2 to 6 together, the vehicle body 100 includes a battery frame 110, a rocker 120, a floor 130, a first separator 160, a second separator 180, and a second seal 190. The battery frame 110 has a receiving cavity 113 for receiving a battery cell, the battery frame 110 includes a first support beam 111 disposed at one side of the vehicle body 100 in a width direction, the first support beam 111 includes a first beam 1111, a first support seat 1112 and a second support seat 1113, the first support seat 1112 is connected to one side of the first beam 1111 facing away from the receiving cavity 113, and the second support seat 1113 is connected to one side of the first beam 1111 facing the receiving cavity 113. The threshold beam 120 includes a second beam body 121 and a connecting member 122, the second beam body 121 is mounted on a side of the first support seat 1112 facing away from the bottom of the vehicle body 100, the connecting member 122 is a plate and is disposed on a side of the second beam body 121 facing the first beam body 1111, and the connecting member 122 is connected to a side of the first beam body 1111 facing away from the bottom of the vehicle body 100. The second insulating layer 180 and the second seal 190 are disposed between the threshold beam 120 and the first support beam 111. The floor 130 is mounted on a side of the second support 1113 facing away from the bottom of the vehicle body 100 and seals the cavity 113.

In a second aspect, referring to fig. 1, an electric vehicle 1000 is provided according to an embodiment of the present application, including a vehicle body 100 according to any one of the above embodiments.

The electric automobile 1000 provided by the embodiment of the application adopts the automobile body 100 described in any one of the embodiments, so that the endurance performance of the electric automobile 1000 is effectively improved.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. A vehicle body characterized in that: the vehicle body includes:

A battery frame body having a receiving cavity for receiving a battery cell, the battery frame body including a first support beam provided at one side of the vehicle body in a width direction;

and the threshold beam is arranged on the first supporting beam.

2. The vehicle body of claim 1, wherein: the first supporting beam comprises a first beam body and a first supporting seat, the first supporting seat is connected to one side of the first beam body, which is opposite to the containing cavity, or one side of the first beam body, which faces the containing cavity, the threshold beam comprises a second beam body, and the second beam body is mounted on the first supporting seat.

3. The vehicle body of claim 2, wherein: the second beam body is arranged on one side of the first supporting seat, which is away from the bottom of the vehicle body, and the second beam body is fixedly arranged on the first supporting seat through welding, bonding and/or fixing pieces.

4. The vehicle body of claim 2, wherein: the threshold beam further comprises a connecting piece protruding from one side of the second beam body facing the first beam body, and the connecting piece is connected with the first beam body.

5. The vehicle body of claim 4, wherein: the connecting piece is a plate, and is connected with the first beam body through welding, bonding and/or fixing pieces.

6. The vehicle body of claim 4, wherein: the connecting piece is connected to one side of the first beam body, which is away from the bottom of the vehicle body.

7. The vehicle body of claim 2, wherein: the height of one side of the first beam body, which is away from the bottom of the vehicle body, is larger than the height of one side of the first supporting seat, which is away from the bottom of the vehicle body.

8. The vehicle body of claim 1, wherein: the vehicle body further comprises a floor, and the floor is installed on the first supporting beam and used for blocking the containing cavity.

9. The vehicle body of claim 8, wherein: the first supporting beam comprises a first beam body, a first supporting seat connected to one side, facing away from the accommodating cavity, of the first beam body, and a second supporting seat connected to one side, facing towards the accommodating cavity, of the first beam body, the threshold beam comprises a second beam body, the second beam body is mounted on the first supporting seat, and the floor is mounted on the second supporting seat.

10. The vehicle body of claim 9, wherein: a preset structure is arranged between the second supporting seat and the floor.

11. The vehicle body of claim 10, wherein:

the predetermined positioning structure includes a convex portion and a concave portion;

The convex part is arranged on the floor, and the concave part is arranged on the second supporting seat; or alternatively

The convex part is arranged on the second supporting seat, and the concave part is arranged on the floor;

The convex part is spliced with the concave part.

12. The vehicle body of claim 8, wherein: the vehicle body further comprises a first isolation layer body arranged between the first support beam and the floor, and/or the vehicle body comprises a first sealing element arranged between the first support beam and the floor.

13. The vehicle body of claim 8, wherein: the vehicle body further comprises a bearing plate, and the bearing plate is covered on one side of the frame body, which is opposite to the floor.

14. The vehicle body according to any one of claims 1 to 13, characterized in that: the vehicle body comprises a second isolation layer body, the second isolation layer body is arranged between the first support beam and the threshold beam, and/or the vehicle body comprises a second sealing piece, and the second sealing piece is arranged between the first support beam and the threshold beam.

15. An electric automobile, characterized in that: the electric vehicle comprising the vehicle body as claimed in any one of claims 1 to 14.