CN114132383B

CN114132383B - Floor assembly for electric vehicle

Info

Publication number: CN114132383B
Application number: CN202111507888.4A
Authority: CN
Inventors: 吕祝星; 彭荣华; 周东峰; 赵研; 徐现振; 董方亮; 魏裕君; 李继威
Original assignee: Zhiji Automobile Technology Co Ltd
Current assignee: Zhiji Automobile Technology Co Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-12-02
Anticipated expiration: 2041-12-10
Also published as: CN114132383A

Abstract

The invention discloses a floor assembly for an electric vehicle, and relates to the technical field of vehicle chassis. The floor assembly includes: the floor comprises a floor body, a floor body and a floor body, wherein the bottom of the floor body is limited with an accommodating space; the battery frame is arranged in the accommodating space and connected with the bottom of the floor body, and the battery frame is used for accommodating the battery; the doorsills are arranged on two sides of the floor body, and the bottoms of the doorsills extend to the side edges of the battery frames; the beam assembly is arranged above the floor body and comprises a front wall middle beam, a front floor beam, a rear floor beam and a spare tire pit floor beam which are sequentially arranged from front to back and all follow the transverse extension of the electric vehicle, wherein the front wall middle beam corresponds to the front end of the battery frame, and the spare tire pit floor beam corresponds to the rear end of the battery frame. The floor assembly provided by the invention can provide enough protection for the battery.

Description

Floor assembly for electric vehicle

Technical Field

The invention relates to the technical field of vehicle chassis, in particular to a floor assembly for a vehicle.

Background

With the rapid development of science and technology, vehicles are no longer limited to gasoline vehicles, and new energy vehicles, especially electric vehicles, are gradually accepted by people due to the advantages of low use cost, low noise and the like. The decisive factors in the development of electric vehicles are the battery capacity on the one hand and the battery safety on the other hand, and the battery safety includes the battery performance itself and the vehicle protection performance against the battery, the latter being of great importance in the event of a vehicle collision, in case of a vehicle collision with insufficient protection performance against the battery, the battery is extremely prone to short-circuiting by the force of the collision, even to fire, with unfortunate consequences.

Therefore, how to design the bottom of the vehicle so that it can provide sufficient protection for the battery becomes a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The present invention provides a floor assembly for an electric vehicle capable of providing sufficient protection for a battery.

The invention provides the following scheme:

a floor assembly for an electric vehicle, the electric vehicle including a battery, the floor assembly comprising:

a floor body, the bottom of which defines an accommodation space;

the battery frame is arranged in the accommodating space and connected with the bottom of the floor body, and the battery frame is used for accommodating the battery;

the doorsills are arranged on two sides of the floor body, and the bottoms of the doorsills extend to the side edges of the battery frame;

the beam assembly is arranged above the floor body and comprises a front wall middle beam, a front floor beam, a rear floor beam and a spare tire pit floor beam which are sequentially arranged from front to back and extend along the transverse direction of the electric vehicle, wherein the front wall middle beam corresponds to the front end of the battery frame, and the spare tire pit floor beam corresponds to the rear end of the battery frame;

a preset gap is formed between the threshold and the battery frame;

the battery frame comprises a third body and a connecting structure connected with the third body, the third body is used for accommodating the battery, and the connecting structure is arranged in the preset gap and is used for connecting the battery frame with the doorsill;

the doorsill comprises a first body, one side of the first body, which is close to the battery frame, protrudes towards the battery frame to form a protruding structure, the bottom of the protruding structure is connected with the connecting structure, and the top of the protruding structure is connected with the floor body

Optionally, the floor assembly further comprises two rear longitudinal beams symmetrically arranged on two sides of the floor body, and the rear longitudinal beams are connected with the threshold;

the front floor beam comprises a front floor front beam, a front floor middle beam and a front floor rear beam, the rear floor beam comprises a rear floor front beam, a rear floor middle beam and a rear floor rear beam, and the spare tire pit floor beam comprises a spare tire front beam and a spare tire rear beam;

the front floor front cross beam, the front floor middle cross beam, the front floor rear cross beam and the rear floor front cross beam are all connected with the doorsill, and the rear floor middle cross beam, the rear floor rear cross beam, the spare tire front cross beam and the spare tire rear cross beam are all connected with the rear longitudinal beam.

Optionally, a hollow cavity extending in a transverse direction of the electric vehicle is defined between the front floor cross member and the floor body.

Optionally, the rocker further comprises a bumper beam disposed in the first body, the bumper beam extends in the longitudinal direction of the electric vehicle and at least partially crosses an extension line of the hollow cavity in the transverse direction of the electric vehicle.

Optionally, the bottom of the bumper beam and the floor body are in the same plane, and the top of the bumper beam and the middle cross beam of the front floor are in the same plane;

the bumper beam comprises a hollow second body and at least one reinforcing rib arranged in the second body.

Optionally, the floor assembly further comprises two reinforcing beams each extending in the longitudinal direction of the electric vehicle, and the two reinforcing beams are symmetrically arranged on both sides of the floor body.

Optionally, the floor assembly further comprises two shotgun's arranged in a mirror image, two front longitudinal beams, two front floor skis each extending in a longitudinal direction of the electric vehicle and arranged above the floor body, and a channel in the floor provided above the floor body;

two ends of the shotgun are respectively connected with the threshold and one end, far away from the floor body, of the front longitudinal beam, and the front longitudinal beam is further connected with the front wall middle cross beam;

the front end of the channel in the floor extends to the front floor front cross member.

Optionally, the floor assembly further comprises two rear floor longitudinal beams symmetrically arranged and two spare tire pit rear longitudinal beams symmetrically arranged, two ends of each rear floor longitudinal beam are respectively connected with the rear floor front cross beam and the rear floor rear cross beam, the two rear floor longitudinal beams are respectively crossed with the rear floor middle cross beam, and the spare tire pit rear longitudinal beams are arranged at the rear ends of the spare tire rear cross beams.

Optionally, the floor body comprises a front floor and a rear floor, the front floor is provided with the front floor front cross beam, the front floor middle cross beam and the front floor rear cross beam, the rear floor is provided with the rear floor front cross beam, the rear floor middle cross beam and the rear floor rear cross beam, and the upper surface of the front floor is a plane.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

the floor assembly provided by the invention is suitable for electric vehicles, wherein a battery frame for accommodating a battery is arranged at the bottom of the floor body, the cross beam component is arranged at the top of the floor body and positioned at the front end, the middle part and the rear end of the battery frame, and the doorsills are arranged at two sides of the battery frame. In other words, the cross beam assembly and the doorsill surround the battery frame at the periphery and the top, so that the battery is surrounded by 360 degrees, the battery is resisted from collision possibly occurring to the battery from various angles and positions, the battery is protected by 360 degrees, the safety performance of the battery can be improved, and the battery is prevented from being damaged when the electric vehicle collides with the outside as far as possible.

Further, the cross beam assembly is arranged at the top of the floor body, so that transverse support can be firstly provided for the electric vehicle, a mounting point position is further provided for a seat, and finally the capacity of the accommodating space is increased, so that enough space is reserved for arrangement of the battery, and the driving range of the electric vehicle is favorably improved.

Furthermore, a plurality of front and rear cross beams are arranged on the floor body, so that on one hand, the protection on the top of the battery can be greatly improved, and the bearing capacity of the top of the electric vehicle is decomposed; on the other hand, when the electric vehicle has a lateral collision with the outside, the threshold disperses the collision force to the rear longitudinal beam, the front floor front cross beam, the front floor middle cross beam, the front floor rear cross beam and the rear floor front cross beam, the rear longitudinal beam disperses the collision force to the rear floor middle cross beam, the rear floor rear cross beam, the spare tire front cross beam and the spare tire rear cross beam, and the collision force is transmitted to each position of the floor body by each cross beam, that is, the collision force is dispersed at the periphery of the battery, so that the stress concentration of a certain point is avoided, the overall structure of the floor assembly is complete, the collision force can be prevented from acting on the battery as much as possible, the protection performance of the battery is greatly improved, and the safety performance of the electric vehicle is improved.

Furthermore, the shotgun and the front longitudinal beam can absorb the collision force from the front of the electric vehicle through self deformation, and can also split the collision force from the front into two paths which are respectively transmitted to the threshold and the floor body, the threshold transmits the collision force to the rear longitudinal beam, the floor body transmits the collision force to the front floor ski board, the floor middle channel, the rear floor longitudinal beam and the spare wheel well rear longitudinal beam, so that the transmission path of the collision force is continuous, the collision force from the front end to the rear end of the electric vehicle can be continuously transmitted and absorbed by the longitudinal and transverse beams in the transmission process, and the crossed or connected longitudinal beams and transverse beams can be mutually restricted to absorb the collision force, thereby increasing the collision resistance of the electric vehicle and improving the protection performance of the battery. And the longitudinal bearing capacity of the rear part of the electric vehicle can be improved by means of the rear floor longitudinal beam and the spare tire pit rear longitudinal beam, so that the rear part is prevented from deforming.

Of course, embodiments of the invention need not achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a floor assembly for an electric vehicle according to one embodiment of the present invention;

FIG. 2 is a side impact force transmission pattern for a floor assembly of an electric vehicle provided in accordance with one embodiment of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a frontal impact force transmission pattern for a floor assembly of an electric vehicle provided in accordance with one embodiment of the present invention;

fig. 5 is a sectional view taken along line B-B of fig. 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.

It should be noted that the descriptions of the present invention with respect to the directions of "left", "right", "upper", "lower", "top", "bottom", etc. are defined based on the relationship of the orientation or position shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structure described must be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; 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 invention can be understood in a specific case to those of ordinary skill in the art.

In the description of the present invention, "lateral" denotes the left-right direction of the vehicle, "longitudinal" denotes the front-rear direction of the vehicle, "vertical" denotes the height direction of the vehicle, "front end" denotes the head of the vehicle, and "rear end" denotes the tail of the vehicle.

If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Fig. 1 is a schematic structural diagram of a floor assembly for an electric vehicle according to an embodiment of the present invention. As shown in fig. 1, the present invention provides a floor assembly for an electric vehicle, which includes a battery as a power source. The floor assembly includes: the floor body 100, the battery frame 400, the rocker 200, and the cross member assembly 300. The bottom of the floor body 100 defines a receiving space. The battery frame 400 is disposed in the accommodating space and connected to the bottom of the floor body 100, and the battery frame 400 is used for accommodating the battery. The threshold 200 is disposed at both sides of the floor body 100, and the bottom thereof extends to the side of the battery frame 400. The cross beam assembly 300 is disposed above the floor body 100, the cross beam assembly 300 includes a front wall middle cross beam 310, a front floor cross beam 320, a rear floor cross beam 330 and a spare wheel well floor cross beam 340, which are sequentially arranged from front to rear and all extend in a transverse direction of the electric vehicle, the front wall middle cross beam 310 corresponds to a front end of the battery frame 400, and the spare wheel well floor cross beam 340 corresponds to a rear end of the battery frame 400.

The above-described floor assembly is applicable to an electric vehicle, in which a battery frame 400 for accommodating a battery is disposed at the bottom of the floor body 100, the cross member assembly 300 is disposed at the top of the floor body 100 at the front, middle and rear ends of the battery frame 400, and the door sills 200 are disposed at both sides of the battery frame 400. In other words, the cross member assembly 300 and the rocker 200 surround the battery frame 400 at the periphery and the top, and surround the battery for 360 °, so as to resist the collision of the battery from various angles and positions, thereby protecting the battery for 360 °, improving the safety of the battery, and preventing the battery from being damaged when the electric vehicle collides with the outside as much as possible.

Further, the beam assembly 300 is disposed on the top of the floor body 100, firstly, the transverse support can be provided for the electric vehicle, secondly, the mounting point is provided for the seat, and finally, the capacity of the accommodating space is increased, enough space is left for the arrangement of the battery, and the driving range of the electric vehicle is favorably increased.

Preferably, since the receiving space at the bottom of the floor body 100 is large, the shape and size of the battery frame 400 may be set according to the actual needs of the electric vehicle, and the receiving space may be fully utilized or only a part of the receiving space may be utilized, which provides high flexibility.

With continued reference to fig. 1, in a specific embodiment, the floor assembly further includes two rear longitudinal beams 520, the two rear longitudinal beams 520 are symmetrically disposed at two sides of the floor body, each rear longitudinal beam 520 is connected to the door sill 200, the door sill 200 includes a left door sill and a right door sill, and the two rear longitudinal beams 520 are respectively connected to the left door sill and the right door sill. The front floor cross beam 320 comprises a front floor cross beam 321, a front floor middle cross beam 322 and a front floor rear cross beam 323, the rear floor cross beam 330 comprises a rear floor front cross beam 331, a rear floor middle cross beam 332 and a rear floor rear cross beam 333, and the spare tire pit floor cross beam 340 comprises a spare tire front cross beam 341 and a spare tire rear cross beam 342. The front floor front cross beam 321, the front floor middle cross beam 322, the front floor rear cross beam 323, and the rear floor front cross beam 331 are all connected to the doorsill 200, and the rear floor middle cross beam 332, the rear floor rear cross beam 333, the spare tire front cross beam 341, and the spare tire rear cross beam 342 are all connected to the rear longitudinal beam 520. Specifically, the front floor front cross beam 321, the front floor middle cross beam 322, the front floor rear cross beam 323, and the rear floor front cross beam 331 have opposite ends, and the opposite ends are respectively connected to the left rocker and the right rocker; the rear floor middle cross beam 332, the rear floor rear cross beam 333, the spare tire front cross beam 341 and the spare tire rear cross beam 342 have two opposite ends, and the two opposite ends are respectively connected with one rear longitudinal beam 520. By arranging a plurality of front and rear cross beams on the floor body 100, on one hand, the protection of the top of the battery can be greatly improved, and the bearing of the top of the electric vehicle can be decomposed; on the other hand, as shown in fig. 2, in which hollow arrows indicate the transmission direction of the collision force, when the electric vehicle collides with the outside, the rocker 200 disperses the collision force to the rear side member 520, the front floor front cross member 321, the front floor middle cross member 322, the front floor rear cross member 323, and the rear floor front cross member 331, the rear side member 520 further disperses the collision force to the rear floor middle cross member 332, the rear floor rear cross member 333, the spare tire front cross member 341, and the spare tire rear cross member 342, and the collision force is transmitted to each position of the floor body 100 by each cross member, that is, the collision force is dispersed at the periphery of the battery, so that the stress concentration at a certain point is avoided, the overall structure of the floor assembly is completed, and the collision force can be prevented from acting on the battery as much as possible, the protection performance of the battery is greatly improved, and the safety performance of the electric vehicle is improved.

Further, the front floor front cross member 321, the front floor middle cross member 322 and the front floor rear cross member 323 also provide fixing points for the seat of the electric vehicle, so as to facilitate installation of the seat.

Fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2. As shown in fig. 3, in a preferred embodiment, a hollow cavity extending in the transverse direction of the electric vehicle is defined between the front floor middle cross beam 322 and the floor body 100, and the hollow cavity can play a role of buffering to increase the protection of the battery.

In a preferred embodiment, the rocker 200 includes a first body 210 and a bumper beam 220 disposed in the first body 210, wherein the bumper beam 220 extends in a longitudinal direction of the electric vehicle and at least partially crosses an extension line of the hollow cavity in a lateral direction of the electric vehicle. The rigidity of the rocker 200 can be improved by the bumper beam 220, the impact resistance of the rocker 200 can be improved, and a part of the impact force can be absorbed by the deformation of the bumper beam 220, so that the protection of the battery can be enhanced. The bumper beam 220 is disposed to cross the extension line of the hollow cavity, so that a force transmission path is continuous, and the collision force acting on the rocker 200 is smoothly transmitted to the front floor middle cross member 322, which is advantageous for resolving the collision force.

In a more preferred embodiment, the bottom of the bumper beam 220 is located on the same plane as the floor body 100, and the top of the bumper beam 220 is located on the same plane as the middle cross beam 322 of the front floor, that is, the bumper beam 220 faces the hollow cavity. The bumper beam 220 includes a hollow second body 221 and at least one reinforcing rib 222 disposed in the second body 221. The bumper beam 220 is opposite to the hollow cavity, the bumper beam 220 is arranged to be hollow, and the reinforcing ribs 222 are arranged in the bumper beam 220, so that the whole stability of the doorsill 200 is facilitated, the doorsill 200 is not easy to turn over when the electric vehicle is laterally collided with the outside, and the collision safety can be further improved.

Further, one side of the second body 221, which is close to the battery frame 400, is in contact with the inner wall of the first body 210, the second body 221 penetrates through the first body 210 in the longitudinal direction of the electric vehicle, the reinforcing rib 222 is arranged in the vertical direction of the electric vehicle, and the upper side and the lower side of the reinforcing rib are connected to the second body 221.

Further, the side of the first body 210 close to the battery frame 400 and the rear side member 520 are made of hot-formed steel, which has high hardness and high impact resistance, and is not easily deformed by an external force, and thus, the battery is not pressed. The bumper beam 220 is an aluminum extruded profile, and due to the characteristics of the extrusion process, the cross section of the bumper beam 220 can be freely designed according to performance requirements, so that the rigidity and the strength of the bumper beam are guaranteed. In addition, the aluminum density is low, the weight of the automobile can be reduced, and the light weight of the automobile is favorably realized.

More specifically, a preset gap is formed between the threshold 200 and the battery frame 400, and the preset gap is a reserved installation and buffering distance, so that the battery frame 400 is conveniently connected with the threshold 200 on one hand, and the battery is not affected by deformation of the threshold 200 within the preset distance during collision, so that the safety performance of the battery can be further improved.

With continued reference to fig. 3, in a further embodiment, the battery frame 400 includes a third body 410 and a connecting structure 420 connected to the third body 410, wherein the third body 410 is configured to receive the battery, and the connecting structure 420 is disposed in the predetermined gap and is configured to connect the battery frame 400 to the door sill 200. That is, the battery frame 400 is connected to the bottom of the floor body 100 and the threshold 200, so that the stability of the battery frame 400 can be increased, the load capacity of the battery frame to the battery can be increased, and the driving range of the electric vehicle can be increased.

Preferably, one side of the first body 210 close to the battery frame 400 protrudes in a direction of the battery frame 400 to form a protruding structure 211, the bottom of the protruding structure 211 is connected to the connecting structure 420, and the top of the protruding structure is connected to the floor body 100, and the connecting manner may be screwing, welding, or the like. The protruding structure 211 realizes the connection between the threshold 200 and the battery frame 400, and increases the buffer space in the first body 210, thereby providing a safer protection for the battery. In order to improve the stability of the connection between the first body 210 and the battery frame 400, a reinforcing plate 212 is disposed at the bottom of the protrusion 211.

Preferably, the first body 210 is hollow at a position corresponding to the battery frame 400, so that the energy absorption capability of the rocker 200 can be increased, that is, the safety performance of the battery can be improved.

In a specific embodiment, since the requirement for collision is high at the door opening, the floor assembly in this application further includes two reinforcing beams 800 each extending in the longitudinal direction of the electric vehicle, and the two reinforcing beams 800 are symmetrically arranged on both sides of the floor body 100, and preferably, the two reinforcing beams 800 are located on the top of the floor body 100 or the rocker 200. I-shaped beams are formed between the reinforcing beam 800 and each cross beam, so that the structure is stable, and the lateral collision performance of the electric vehicle can be further improved.

With continued reference to fig. 1, in a more specific embodiment, the floor assembly further includes two shotgun 600 arranged in a mirror image, two front longitudinal beams 510, two front skid plates 540 extending in a longitudinal direction of the electric vehicle and arranged above the floor body 100, and a floor tunnel 700 provided above the floor body 100, the two front skid plates 540 being symmetrically arranged on both sides of the floor tunnel 700. Two ends of the shotgun 600 are respectively connected with the doorsill 200 and one end of the front longitudinal beam 510 away from the floor body 100, and the front longitudinal beam 510 is further connected with the front wall middle cross beam 310. Further, the shotgun 600, the front side member 510, and the front center cross member 310 constitute a front structure of the floor assembly, and are mainly used for distributing collision force from the front of the electric vehicle. As shown in fig. 4, in which hollow arrows indicate the transmission direction of the collision force, the collision force transmitted from the front side of the electric vehicle is dispersed to the positions of the in-floor tunnel 700, the rocker 200, the front floor ski 540, the rear side member 520, and the like by the shotgun 600 and the front side member 510, and the front collision force is resolved. And the front ski 540 and the in-floor channel 700 may support the front structure, ensuring that the batteries are not stressed by impact forces from the front of the electric vehicle. Because the electric vehicle does not have the engine, the energy-absorbing space of front portion is compared with the side and is many, consequently need not to arrange too much longeron and protect the battery, through this application the shotgun 600 with the collapse of front longitudinal beam 510 just can absorb most impact, guarantees the collision safety of battery forward direction.

Fig. 5 is a sectional view taken along line B-B in fig. 4. As shown in fig. 5, the front end of the tunnel 700 in the floor extends to the front floor cross member 321, which provides a mounting point for the dash panel.

Preferably, the shotgun 600, the front longitudinal beam 510 and the floor body 100 located on the same side form a substantially triangular structure. The floor assembly further comprises two rear floor longitudinal beams 530 which are symmetrically arranged and two spare tire pit rear longitudinal beams 550 which are symmetrically arranged, two ends of the rear floor longitudinal beam 530 are respectively connected with the rear floor front cross beam 331 and the rear floor rear cross beam 333, and the two rear floor longitudinal beams 530 are crossed with the rear floor middle cross beam 332. The spare tire pit rear longitudinal beam 550 is disposed at the rear end of the spare tire rear cross member 342. The triangular structure can absorb the frontal collision force from the electric vehicle by self-deformation, and can also decompose the frontal collision force into two paths, which are respectively transmitted to the rocker 200 and the floor body 100, the rocker 200 further transmits the collision force to the rear side member 520, the floor body 100 transmits the collision force to the front floor ski 540, the floor middle channel 700, the rear floor side member 530 and the spare tire pit rear side member 550, so that the transmission path of the collision force is continuous, the frontal collision force can be transmitted from the front end to the rear end of the electric vehicle, and is continuously absorbed by the longitudinal and transverse members in the transmission process, and the longitudinal and transverse members which are crossed or connected together can be mutually restricted to absorb the collision force, thereby increasing the collision resistance of the electric vehicle and improving the protection performance of the battery. And the longitudinal bearing capacity of the rear part of the electric vehicle can be improved by means of the rear floor longitudinal beam 530 and the spare tire pit rear longitudinal beam 550, so that the rear part is prevented from deforming.

In a further embodiment, the floor body 100 includes front floor and back floor, set up on the front floor front beam 321, front floor middle beam 322 with front floor rear beam 323, set up on the back floor back beam 331 back floor middle beam 332 with back floor rear beam 333, the upper surface on front floor is the plane, just the rear of front floor need not to increase extra longitudinal beam, and the existing improvement that is favorable to the arrangement space of floor body 100 below battery, is favorable to the convenience of passenger's business turn over again, promotes the riding comfort.

The technical solutions provided by the present invention are described in detail above, and specific examples are applied herein to explain the structure and the implementation of the present invention, and the descriptions of the above examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the foregoing, the description is not to be taken in a limiting sense.

Claims

1. A floor assembly for an electric vehicle, the electric vehicle including a battery, the floor assembly comprising:

a floor body, the bottom of which defines an accommodation space;

a preset gap is formed between the threshold and the battery frame;

the doorsill comprises a first body, one side of the first body, which is close to the battery frame, protrudes towards the battery frame to form a protruding structure, the bottom of the protruding structure is connected with the connecting structure, and the top of the protruding structure is connected with the floor body.

2. The floor assembly according to claim 1, further comprising two rear longitudinal beams symmetrically disposed at both sides of the floor body, and the rear longitudinal beams are connected to the threshold;

3. The floor assembly of claim 2, wherein a hollow cavity extending in a lateral direction of the electric vehicle is defined between the front floor cross member and the floor body.

4. The floor assembly of claim 3, wherein the rocker further comprises a bumper beam disposed within the first body, the bumper beam extending in a longitudinal direction of the electric vehicle and at least partially positioned to intersect an extension of the hollow cavity in a lateral direction of the electric vehicle.

5. The floor assembly of claim 4, wherein the bottom of the bumper beam is coplanar with the floor body and the top of the bumper beam is coplanar with the front floor cross member;

6. The floor assembly according to claim 1, further comprising two reinforcing beams each extending in a longitudinal direction of the electric vehicle, and the two reinforcing beams are symmetrically arranged on both sides of the floor body.

7. The floor assembly of claim 1, further comprising two shotgun's arranged in mirror image, two front stringers, two front floor skis each extending in a longitudinal direction of the electric vehicle and arranged above the floor body, and a mid-floor channel disposed above the floor body;

the two front floor skis are symmetrically arranged on two sides of the channel in the floor;

two ends of the shotgun are respectively connected with the doorsill and one end, far away from the floor body, of the front longitudinal beam, and the front longitudinal beam is further connected with the front wall middle cross beam;

the front end of the channel in the floor extends to the front floor front cross beam.

8. The floor assembly according to claim 2, further comprising two symmetrically arranged rear floor stringers and two symmetrically arranged spare tire pit rear stringers, wherein two ends of the rear floor stringers are connected with the rear floor front cross member and the rear floor rear cross member respectively, and both of the rear floor stringers intersect with the rear floor center cross member, and the spare tire pit rear stringers are arranged at rear ends of the spare tire rear cross member.

9. The floor assembly as claimed in claim 2, wherein the floor body includes a front floor and a rear floor, the front floor is provided with the front floor front cross member, the front floor middle cross member and the front floor rear cross member, the rear floor is provided with the rear floor front cross member, the rear floor middle cross member and the rear floor rear cross member, and an upper surface of the front floor is a plane.