CN210882318U - Electric vehicle lower body and electric vehicle comprising same - Google Patents

Electric vehicle lower body and electric vehicle comprising same Download PDF

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Publication number
CN210882318U
CN210882318U CN201921963942.4U CN201921963942U CN210882318U CN 210882318 U CN210882318 U CN 210882318U CN 201921963942 U CN201921963942 U CN 201921963942U CN 210882318 U CN210882318 U CN 210882318U
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auxiliary
electric vehicle
longitudinal beam
lower body
auxiliary longitudinal
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CN201921963942.4U
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宋思川
董志勇
袁贵平
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Modern Auto Co Ltd
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Modern Auto Co Ltd
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Abstract

The utility model discloses an electric vehicle lower body, which comprises a front longitudinal beam, two side doorsills, a front bottom beam assembly and a rear bottom beam assembly; the doorsills on the two sides extend along the length direction of the lower body of the electric vehicle and are symmetrical relative to the central axis of the lower body of the electric vehicle; the lower body of the electric vehicle also comprises at least one auxiliary longitudinal beam; each auxiliary longitudinal beam extends along the vehicle length direction, one end of each auxiliary longitudinal beam is connected with the front bottom beam assembly, and the other end of each auxiliary longitudinal beam is connected with the rear bottom beam assembly. The utility model provides an electric vehicle, including automobile body under the above-mentioned electric motor car. Through setting up supplementary longeron, make the front end atress from the multipath backward transmission, make the even stability of transmission of force, further, at least one supplementary longeron makes the front longitudinal to the requirement of the biography power route of threshold to the share force decline, and the size in this route and the space that occupies also decline correspondingly to release more arrangement space.

Description

Electric vehicle lower body and electric vehicle comprising same
Technical Field
The utility model relates to the field of automobiles, in particular to electric motor car is lower automobile body and contains its electric motor car.
Background
The main force transmission path of the lower body of the traditional gasoline vehicle is relatively fixed, as shown in fig. 1, when the vehicle is impacted by collision, impact force is transmitted to the existing front bottom beam 2 through the traditional front longitudinal beam 1, and then the force is effectively transmitted backwards through the front longitudinal beam extension section 4, the central channel 3 and the traditional doorsill 5.
At present, because the battery pack is generally arranged at the bottom of an automobile, the space for arranging the battery pack occupies the path space of the front longitudinal beam extension section of the traditional gasoline automobile. In addition, along with the improvement of passenger to the travelling comfort requirement, the vehicle has proposed the even demand in vehicle inside floor for promoting the travelling comfort, makes the car bottom remove the biography power route that has higher bellied centre passage again, and the route of locomotive biography power backward further diminishes. And when viewed from the front side of the vehicle, only the front longitudinal beam to the threshold is left to become the most main force transmission path of the electric vehicle, and the stress of the path is increased. In order to ensure the collision safety of vehicles, some electric vehicles adopt a large-section and gentle-transition structure from a front longitudinal beam to a threshold to relieve the problem of stress deformation, but the cross section of the threshold is enlarged and the cross section is correspondingly enlarged in gentle transition, so that the scheme occupies a larger space at the front end of a battery pack, the electric quantity of the battery pack is influenced, and the increase of the endurance mileage is negatively influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the unstable problem of automobile body biography power under the electric motor car among the prior art, through setting up auxiliary longitudinal beam, make the plantago end atress transmit backward from the multipath, make the transmission of force evenly stable, furtherly, an at least auxiliary longitudinal beam makes the front longitudinal beam descend to the demand of load carrying power to the biography power route of threshold, the size on this route and the space that occupies also corresponding decline to release more arrangement space.
In order to solve the technical problem, the lower body of the electric vehicle comprises a front longitudinal beam, two side doorsills, a front bottom beam assembly and a rear bottom beam assembly; the doorsills on the two sides extend along the length direction of the lower body of the electric vehicle and are symmetrical relative to the central axis of the lower body of the electric vehicle; the lower body of the electric vehicle also comprises at least one auxiliary longitudinal beam; each auxiliary longitudinal beam extends along the vehicle length direction, one end of each auxiliary longitudinal beam is connected with the front bottom beam assembly, and the other end of each auxiliary longitudinal beam is connected with the rear bottom beam assembly.
By adopting the scheme, at least one auxiliary longitudinal beam is added, when the vehicle is subjected to the input of the front-end collision load, the force is absorbed by the front longitudinal beam and then transmitted to the front bottom beam assembly, then the force can be dispersed into a plurality of parts for transmission, one part is a threshold force transmission path of the original structure, and the other part is transmitted through the auxiliary longitudinal beam. Meanwhile, the newly added auxiliary longitudinal beam is connected with the rear bottom beam assembly, and after separation and transmission, the residual load is continuously and smoothly transmitted backwards through the rear bottom beam assembly. Meanwhile, the newly added auxiliary longitudinal beams share the load transmitted from the front part, so that the load transmitted to the threshold can be correspondingly reduced, and the size of the threshold can be reduced, so that the arrangement space is saved.
According to another embodiment of the present invention, an electric vehicle underbody includes a pair of side auxiliary longitudinal beams, each pair of side auxiliary longitudinal beams being symmetrically disposed on both sides of a central axis with respect to the central axis and being located between the central axis and a corresponding door sill.
By adopting the scheme, one or more pairs of auxiliary longitudinal beams are arranged and distributed on two sides of the central axis, so that the force of the front bottom beam assembly is shared.
According to the utility model discloses a further embodiment, the utility model discloses an automobile body under electric motor car that embodiment discloses, supplementary longeron still includes middle part auxiliary longitudinal beam, and when seeing directly over the automobile body under the electric motor car, middle part auxiliary longitudinal beam and axis coincidence.
By adopting the scheme, the auxiliary longitudinal beams are arranged and distributed on the central axis, so that the force of the front bottom beam assembly is shared.
According to the utility model discloses a further embodiment, the electric motor car lower body that embodiment of the utility model discloses, the threshold is narrow cross-sectional structure.
By adopting the scheme, the auxiliary longitudinal beam is arranged to share the load transmitted from the front part, so that the load transmitted to the doorsill is correspondingly reduced, and the doorsill can be of a narrow-section structure, so that the accommodating space is enlarged, and a battery or other automobile parts are convenient to arrange.
According to the utility model discloses a further embodiment, the utility model discloses an automobile body under electric motor car that embodiment discloses, the front longitudinal and the junction of the threshold that corresponds are the non-mild excessive structure.
By adopting the scheme, the auxiliary longitudinal beam is arranged, so that when the front part of the automobile is subjected to loads such as collision and the like, the load transmitted from the front part is shared by the auxiliary longitudinal beam, the load transmitted to the threshold can be correspondingly reduced, the strength requirement of a force transmission path from the front longitudinal beam to the threshold is correspondingly reduced, the stress capacity is not required to be increased by using a smooth transition or an increased cross section, the space occupied by the transition part from the front longitudinal beam to the threshold is saved, and a battery or other automobile parts are convenient to set.
According to the utility model discloses a further embodiment, the disclosed electric motor car of embodiment of the utility model is lower automobile body, the top surface of threshold, every auxiliary longitudinal beam is at the coplanar.
By adopting the scheme, the lower body of the electric vehicle omits a high-raised central channel for realizing the flat design of the floor in the vehicle, and the flat design of the floor in the vehicle can be very conveniently realized by the doorsill and the top surface of each auxiliary longitudinal beam on the same plane.
According to the utility model discloses a further embodiment, the utility model discloses an automobile body under electric motor car that embodiment discloses still includes an at least auxiliary beam, and auxiliary beam sets up between two adjacent auxiliary longitudinal beams, and both ends are connected with two auxiliary longitudinal beams respectively.
By adopting the scheme, the auxiliary longitudinal beams are connected by the auxiliary cross beams, when one or more auxiliary longitudinal beams are crushed or collapsed, the auxiliary cross beams can play a role in protection, so that the auxiliary longitudinal beams are prevented from falling off, or when one auxiliary longitudinal beam is stressed too much, the auxiliary cross beams can transfer force to other auxiliary longitudinal beams, and the force of the auxiliary longitudinal beam with too much stress is shared.
The utility model provides an electric vehicle, including automobile body under the above-mentioned electric motor car.
By adopting the scheme, at least one auxiliary longitudinal beam is added, when the vehicle is subjected to load input such as front-end collision, the load is firstly absorbed by the front longitudinal beam and then transmitted to the front bottom beam assembly, then the force can be dispersed into a plurality of parts for transmission, one part is a threshold force transmission path of the original structure, and the other part is transmitted by the auxiliary longitudinal beam. Meanwhile, the newly added auxiliary longitudinal beam is connected with the rear bottom beam assembly, and after separation and transmission, the residual load is continuously and smoothly transmitted backwards through the rear bottom beam assembly. Further, the newly added auxiliary longitudinal beams share the load transmitted from the front part, so that the load transmitted to the threshold can be correspondingly reduced, the size of the threshold can be reduced, and the arrangement space is saved. Further, through such setting, can arrange for the battery package with the space contribution of saving, the battery package can be arranged more regularly, promotes the battery package and arranges the space and increase battery package arrangement electric quantity, and then promotes electric motor car continuation of the journey mileage. And because the lower vehicle body adopts a multi-path force transmission structure, the vehicle body is more stable, so that the vehicle is safer.
The utility model has the advantages that:
the auxiliary force transmission path is newly added in the vehicle length direction of the vehicle body, when the vehicle is subjected to load input such as front end collision, the load is dispersed into a plurality of parts to be transmitted, after the load is transmitted in a separating mode, the vehicle body is more stable, the vehicle is safer, the arrangement space of the battery pack is effectively improved, a larger space is provided for the increase of the electric quantity of the battery pack, and the cruising mileage of the electric vehicle is further improved.
Drawings
FIG. 1 is a schematic view of a conventional underbody of a gasoline vehicle according to the prior art;
fig. 2 is a schematic view of the structure of the lower body of the electric vehicle according to the embodiment.
Description of reference numerals:
1: an existing front stringer; 2: an existing front sill; 3: a central channel; 4: extending the longitudinal beam; 5: a conventional threshold;
10, a central axis; 100: a front longitudinal beam; 200: doorsills on both sides; 300: a front sill assembly; 400: rear bottom beam assembly
500: an auxiliary stringer; 510: a side auxiliary stringer; 600: an auxiliary beam.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
In order to solve the above technical problem, an electric vehicle lower body is provided, as shown in fig. 2, including a front side member 100, side sills 200, a front sill assembly 300, and a rear sill assembly 400; the side sills 200 extend in the vehicle length direction of the lower body of the electric vehicle and are symmetrical with respect to the central axis 10 of the lower body of the electric vehicle; the lower body of the electric vehicle further comprises at least one auxiliary longitudinal beam 500; each auxiliary longitudinal beam 500 extends along the vehicle length direction, and one end of each auxiliary longitudinal beam 500 is connected with the front bottom beam assembly 400, and the other end is connected with the rear bottom beam assembly 400.
Specifically, the auxiliary longitudinal beam 500 may be one or more, and the auxiliary longitudinal beam 500 may be integrally formed with or fixedly connected to the front and rear bottom beam assemblies 300 and 400.
When the front-end collision load of the vehicle is input, the at least one auxiliary longitudinal beam 500 is added, the force is firstly absorbed by the front longitudinal beam 100 and then transmitted to the front bottom beam assembly 300, then the force is dispersed into a plurality of parts to be transmitted, one part is a force transmission path of the doorsill 200 with the original structure, and the other part is firstly transmitted by the at least one auxiliary longitudinal beam 500. Since the newly added auxiliary longitudinal beam 500 is connected to the rear sill assembly 400, the load transferred to the auxiliary longitudinal beam 500 is smoothly transferred backward through the rear sill assembly 400 after being separated and transferred. Meanwhile, the newly added auxiliary longitudinal beams 500 share the load transmitted from the front part, so that the load transmitted to the threshold is correspondingly reduced, and the size of the threshold can be reduced, thereby saving the arrangement space.
In a preferred embodiment provided herein, as shown in fig. 2, the auxiliary side member 500 includes side auxiliary side members 510 disposed in pairs, each pair of the side auxiliary side members 510 being disposed symmetrically with respect to the central axis 10 on both sides of the central axis 10 and between the central axis 10 and the corresponding rocker 200.
Specifically, the side auxiliary stringers 510 may be two pairs as shown in fig. 2, which are respectively located at two sides of the central axis 10 and at different distances from the central axis 10.
It should be understood that the auxiliary side longitudinal beams 510 may also be arranged in one or more pairs, and the present application does not intend to limit the total number of the auxiliary longitudinal beams 510 specifically, and it is obvious to those skilled in the art that the number of the auxiliary longitudinal beams 510 may be arbitrarily selected according to the actual design and use requirement, as long as the design requirement can be met and the purpose of absorbing and transmitting the front end load is achieved.
When in use, one or more pairs of side auxiliary longitudinal beams 510 are disposed on two sides of the central axis 10, so as to share the force of the front bottom beam assembly 300.
In a preferred embodiment, the auxiliary longitudinal member 500 further includes a middle auxiliary longitudinal member, which coincides with the central axis 10 when viewed from directly above the underbody of the electric vehicle.
With the adoption of the scheme, the middle auxiliary longitudinal beam (not shown in figure 2) extending along the vehicle length direction is arranged at the center of the vehicle body in the width direction, so that the front end collision load of the vehicle is shared in the structural center of the whole vehicle body.
In a preferred embodiment, the threshold 200 is a narrow cross-sectional structure.
Specifically, since the auxiliary side member 500 is provided to share the load transmitted from the front portion, the load transmitted to the rocker 200 is reduced accordingly, and therefore the rocker 200 can be provided with a narrow cross-sectional structure, thereby enlarging the accommodation space and facilitating the arrangement of the battery or other vehicle components.
It should be understood that the narrow cross section is determined relative to the cross section of the sill of the lower body of the conventional electric vehicle which only transfers force by the sill, and is not compared with the sill of the conventional vehicle body.
In a preferred embodiment, the junction between the front side member 100 and the corresponding rocker 200 is a non-gradual transition.
Specifically, since the auxiliary longitudinal beam 500 is provided to share the load transmitted from the front portion, the load transmitted to the rocker 200 is correspondingly reduced, and the requirement for the force transmission of the transmission path from the front longitudinal beam 100 to the rocker 200 is correspondingly reduced without increasing the stress capacity by using a gentle transition design, so that the space occupied by the transition portion from the front longitudinal beam to the rocker is saved, and the arrangement of a battery or other automobile components is facilitated.
It should be understood that, compared to the conventional gentle design of the threshold of the lower body of the electric vehicle that only transfers force by the threshold, the gentle transition structure of the electric vehicle actually increases the size of the cross section through the gentle transition, thereby increasing the load bearing capacity, and the gentle design requires the design of the transition portion, which occupies a space and is omitted.
In a preferred embodiment, the top surfaces of the rocker 200 and each auxiliary stringer 500 are in the same plane.
Specifically, since the lower body of the electric vehicle omits the center tunnel having the high protrusion in order to obtain a flat floor, the sill 200, the top surface of each auxiliary longitudinal member 500 being in the same plane, obviously enables a flat floor to be obtained by a simple structure.
In a preferred embodiment, as shown in fig. 2, the auxiliary cross member 600 further includes at least one auxiliary cross member 600, the auxiliary cross member 600 is disposed between two adjacent auxiliary longitudinal members 500, and both ends of the auxiliary cross member 600 are respectively connected to the two auxiliary longitudinal members 500.
Specifically, as shown in the figure, the auxiliary cross beam 600 connects two adjacent auxiliary longitudinal beams 500, and when one auxiliary longitudinal beam 500 is crushed or collapsed, the auxiliary cross beam 600 can play a role in protection, so as to prevent the auxiliary longitudinal beam 500 from falling off, or when one auxiliary longitudinal beam 500 is subjected to an excessive force, the auxiliary cross beam 600 can transmit the force to the other auxiliary longitudinal beams 500, so as to share the force of the auxiliary longitudinal beam 500 subjected to the excessive force.
Example 2
The utility model provides an electric vehicle, including automobile body under the above-mentioned electric motor car.
By adopting the scheme, at least one auxiliary longitudinal beam is added, when the vehicle is subjected to the input of the front-end collision load, the force is absorbed by the front longitudinal beam and then transmitted to the front bottom beam assembly, then the force can be dispersed into a plurality of parts for transmission, one part is a threshold force transmission path of the original structure, and the other part is transmitted through the auxiliary longitudinal beam. Meanwhile, the newly added auxiliary longitudinal beam is connected with the rear bottom beam assembly, and after separation and transmission, the residual load is continuously and smoothly transmitted backwards through the rear bottom beam assembly. Meanwhile, the newly added auxiliary longitudinal beams share the load transmitted from the front part, so that the load transmitted to the threshold can be correspondingly reduced, and the size of the threshold can be reduced, so that the arrangement space is saved. The battery pack can be distributed by the space, the battery pack can be distributed more regularly, the battery pack distribution space is improved, the battery pack distribution electric quantity is increased, and the continuous voyage mileage requirement of the electric vehicle is further improved. And because the lower vehicle body adopts a multi-path force transmission structure, the vehicle body is more stable, so that the vehicle is safer.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (8)

1. A lower body of an electric vehicle comprises a front longitudinal beam, doorsills on two sides, a front bottom beam assembly and a rear bottom beam assembly; the doorsills on the two sides extend along the length direction of the lower body of the electric vehicle and are symmetrical relative to the central axis of the lower body of the electric vehicle; the device is characterized by also comprising at least one auxiliary longitudinal beam; wherein,
each auxiliary longitudinal beam extends along the vehicle length direction, one end of each auxiliary longitudinal beam is connected with the front bottom beam assembly, and the other end of each auxiliary longitudinal beam is connected with the rear bottom beam assembly.
2. The electric vehicle underbody according to claim 1, wherein the auxiliary side members include side auxiliary side members disposed in pairs, each pair of the side auxiliary side members being disposed on both sides of the central axis symmetrically with respect to the central axis and between the central axis and the corresponding rocker.
3. The electric vehicle underbody according to claim 1, wherein said auxiliary stringers further comprise a middle auxiliary stringer, said middle auxiliary stringer coinciding with said central axis when viewed from directly above said electric vehicle underbody.
4. The electric vehicle underbody according to claim 2 or 3, characterized in that the rocker is of a narrow-section structure.
5. The electric vehicle lower body according to claim 4, wherein the connection between the front side member and the corresponding rocker is a non-gradual transition structure.
6. The underbody according to claim 5, wherein top surfaces of said side sill and each of said auxiliary side members are in the same plane.
7. The electric vehicle lower body according to claim 6, further comprising at least one auxiliary cross member, wherein the auxiliary cross member is disposed between two adjacent auxiliary longitudinal members, and two ends of the auxiliary cross member are respectively connected to the two auxiliary longitudinal members.
8. An electric vehicle comprising the electric vehicle lower body according to any one of claims 1 to 7.
CN201921963942.4U 2019-11-14 2019-11-14 Electric vehicle lower body and electric vehicle comprising same Active CN210882318U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921963942.4U CN210882318U (en) 2019-11-14 2019-11-14 Electric vehicle lower body and electric vehicle comprising same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921963942.4U CN210882318U (en) 2019-11-14 2019-11-14 Electric vehicle lower body and electric vehicle comprising same

Publications (1)

Publication Number Publication Date
CN210882318U true CN210882318U (en) 2020-06-30

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ID=71320908

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921963942.4U Active CN210882318U (en) 2019-11-14 2019-11-14 Electric vehicle lower body and electric vehicle comprising same

Country Status (1)

Country Link
CN (1) CN210882318U (en)

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