CN114889696B

CN114889696B - Electric automobile

Info

Publication number: CN114889696B
Application number: CN202210445161.6A
Authority: CN
Inventors: 陈智家; 丁为广; 陈鹏磊
Original assignee: Zhejiang Zero Run Technology Co Ltd
Current assignee: Zhejiang Zero Run Technology Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2023-12-05
Anticipated expiration: 2042-04-26
Also published as: CN114889696A

Abstract

The application relates to an electric automobile, which comprises a rear floor of an automobile body, a battery pack, a rear auxiliary frame, a pipeline group and at least one connecting piece, wherein: the rear floor of the vehicle body comprises a plate body and two rear longitudinal beams, wherein the two rear longitudinal beams are distributed on the left side and the right side of the plate body at intervals and are respectively connected with the plate body; the battery pack and the rear auxiliary frame are arranged above the plate body at intervals along the extending direction of the rear longitudinal beam, and a height difference is formed between the battery pack and the rear auxiliary frame; one end of the connecting piece is connected with the battery pack, and the other end of the connecting piece is connected with the rear auxiliary frame and is matched with the battery pack and the rear auxiliary frame to form a storage space; the pipeline group is arranged above the plate body, one end of the pipeline group is positioned on one side of the battery pack, which is not right opposite to the rear auxiliary frame, and the other end of the pipeline group penetrates through the storage space and extends towards the rear auxiliary frame, so that the pipeline group does not occupy the space of the battery pack in the first direction, the installation space of the battery pack in the first direction is enlarged, the arrangement of electric quantity is enlarged, and the cruising time of the electric automobile is improved.

Description

Electric automobile

Technical Field

The application relates to the technical field of automobiles, in particular to an electric automobile.

Background

Along with the vigorous advocacy of energy saving and emission reduction, the electric automobile gradually moves into the field of vision of people, the continuous development of the current electric automobile, the battery technology as a main component of the electric automobile also suddenly moves forward, in order To increase the endurance of the electric automobile, the battery is developed from a small module To a CTP (Cell To Pack-high-integration power battery) and then is developed To a CTC (Cell To Chassis-battery integration), the integration of a higher degree is realized, and the current CTC power battery gradually becomes the hot installation of the battery on the electric automobile.

The CTC power battery is particularly integrated with a vehicle body, namely, the battery is integrated inside an automobile floor frame, so that the charging frequency is reduced for realizing larger endurance mileage, and more electric quantity is arranged in a limited space as much as possible. However, the current CTC power battery is provided with a battery pack on the rear floor of the vehicle body, the rear subframe is connected with the rear longitudinal beam in the rear floor of the vehicle body through a connecting piece, and the connecting pieces are distributed on two sides of the battery pack, so that pipelines originally distributed on two sides of the battery pack are too small in arrangement space due to the existence of the connecting pieces.

Disclosure of Invention

Based on this, it is necessary to provide an electric vehicle against the problem that the electric vehicle is difficult to last long.

An electric automobile, includes floor behind the automobile body, battery package, back sub vehicle frame, pipeline group and at least one connecting piece, wherein:

the rear floor of the vehicle body comprises a plate body and two rear longitudinal beams, wherein the two rear longitudinal beams are distributed on the left side and the right side of the plate body at intervals and are respectively connected with the plate body;

the battery pack and the rear auxiliary frame are arranged above the plate body at intervals along the extending direction of the rear longitudinal beam, and a height difference is formed between the battery pack and the rear auxiliary frame;

one end of the connecting piece is connected with the battery pack, and the other end of the connecting piece is connected with the rear auxiliary frame and is matched with the battery pack and the rear auxiliary frame to form a storage space;

the pipeline group is arranged above the plate body, one end of the pipeline group is positioned on one side of the battery pack, which is not right opposite to the rear auxiliary frame, and the other end of the pipeline group penetrates through the storage space and extends towards the rear auxiliary frame.

According to the electric automobile, the rear auxiliary frame and the battery pack are arranged at a certain distance in the first direction and the second direction, the rear auxiliary frame is connected with the battery pack through the connecting piece to form the storage space, compared with the mode that the rear auxiliary frame is connected with the rear longitudinal beam of the side, far away from the battery pack, of the pipeline pack through the connecting piece, the connecting piece is omitted, the connecting piece arranged on the rear longitudinal beam is not blocked, the pipeline pack can directly wind from the side, which is not opposite to the rear auxiliary frame, of the battery pack to the side, which is opposite to the rear auxiliary frame, of the battery pack, the pipeline pack is convenient to install, the pipeline pack does not need to move towards the end, which is opposite to the rear auxiliary frame, of the battery pack, the space, in the first direction X, of the pipeline pack is reserved for the side, which is opposite to the rear auxiliary frame, of the battery pack is not needed to the battery pack, the installation space, in the first direction X, is increased, and the space, in the first direction X, of the electric automobile, which is arranged between the rear auxiliary frame and the battery pack is not occupied, can be installed downwards after the corner of the battery pack, and the space, which is increased, and the space of the electric automobile is arranged in the first direction X, is increased.

In one embodiment, the battery pack comprises a battery tray and a battery mounted on the battery tray, wherein a high-voltage wire connection socket is arranged on one side, opposite to the rear auxiliary frame, of the battery tray, and the high-voltage wire connection socket is located in the storage space.

In one embodiment, the battery pack further comprises a reinforcing plate, two ends of one side of the battery tray, which is close to the rear frame, are provided with two first corners, and the reinforcing plate wraps the first corners.

In one embodiment, the plate body comprises a first sub-plate and a second sub-plate, one side of the second sub-plate extends upwards to be connected with the first sub-plate, a C-shaped space is formed at the connection part of the second sub-plate and the first sub-plate, the battery pack is arranged on the first sub-plate, and the rear auxiliary vehicle frame is arranged on the second sub-plate.

In one embodiment, the rear subframe is erected between the two rear stringers, and two second corners are formed at two ends of one side of the battery pack, and the two second corners are connected with the two rear stringers in a one-to-one correspondence manner.

In one embodiment, the first bracket and the first through hole are further included, wherein:

the first bracket comprises a first segment and a second segment, and the first segment is connected with the rear longitudinal beam;

one end of the second segment is connected with the first segment, and the other end of the second segment is provided with a mounting part which is provided with a horizontal mounting surface opposite to the second corner;

the first through hole penetrates through the second corner and the mounting part, and the fastener penetrates through the first through hole to connect the second corner and the first bracket into a whole.

In one embodiment, the number of the connectors is two, wherein:

the two connecting pieces are arranged at intervals, the two connecting pieces correspond to the two second corners one by one, and the connecting pieces comprise a first connecting piece and a second connecting piece;

the structure of the first connecting sheet is L-shaped and comprises a horizontal part and a vertical part connected with the horizontal part, the horizontal part is connected with the top end of the battery pack, and the horizontal part at least covers a spacing part between the battery pack and the second corner;

one end of the second connecting piece is connected with one side, far away from the first bracket, of the second corner, and the other end of the second connecting piece is connected with the vertical portion.

In one embodiment, the rear subframe has an electric motor mounted thereon.

In one embodiment, the safety distance between the motor and the battery pack is at least 15mm.

In one embodiment, the vehicle further comprises a brake provided to the vehicle body rear floor, wherein:

the pipeline group comprises a first pipeline group and a second pipeline group, and the first pipeline group and the second pipeline group are respectively positioned at two sides of the battery pack, which are not right opposite to the rear auxiliary frame;

the first pipeline group comprises a brake pipeline and a first water pipe, and the second pipeline group comprises a second water pipe;

the first water pipe and the second water pipe respectively penetrate through the storage spaces near the first water pipe and the second water pipe and then extend to the motor towards the rear auxiliary frame;

the brake pipe extends to the brake after passing through the storage space near the brake pipe.

Drawings

Fig. 1 is a schematic view of a part of an electric automobile according to the present application;

FIG. 2 is an enlarged schematic view of the structure A in FIG. 1;

FIG. 3 is a cross-sectional view of the present application;

FIG. 4 is another cross-sectional view provided by the present application;

fig. 5 is a schematic view of a rear subframe in fig. 1.

Wherein:

10. part of the structure of the electric automobile; x, a first direction; z, the second direction; 100. a first split plate; 110. a second division plate; 120. a rear side member;

200. a battery pack; 210. a battery tray; 211. an inner edge beam; 220. high-voltage wire-connection socket; 230. a reinforcing plate;

300. a rear subframe; 310. a second corner; 320. a front cross member; 321. a second bracket; 330. a third corner;

400. a connecting piece; 410. a storage space; 420. a first connecting piece; 421. a first projection welded stud; 430. a second connecting piece; 431. a second projection welded stud;

500. a first pipeline group; 510. a brake line; 520. a first water pipe; 530. a second pipeline group; 531. a second water pipe; 532. a high voltage harness;

600. a first bracket; 610. a first segment; 620. a second segment; 621. a mounting part;

700. a fastener.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present 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 at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The following describes the technical scheme provided by the embodiment of the application with reference to the accompanying drawings.

As shown in fig. 1 and 2, an embodiment of the present application provides an electric vehicle, which is applied to the technical field of automobiles, and the electric vehicle includes a rear floor of a vehicle body, a battery pack 200, a rear subframe 300, a pipeline group and at least one connecting member 400, wherein when the electric vehicle is specifically arranged, the number of the connecting members 400 is generally two, and the two connecting members 400 are arranged at intervals and at the same height, wherein:

the rear floor of the vehicle body comprises a plate body and two rear longitudinal beams 120, wherein the two rear longitudinal beams 120 are distributed on the left side and the right side of the plate body at intervals, the two rear longitudinal beams 120 are respectively connected with the plate body, when the rear floor is specifically arranged, the two rear longitudinal beams 120 are generally connected with the edges of the two opposite sides of the plate body, and the two rear longitudinal beams 120 are generally symmetrically arranged about the central line of the plate body;

the battery pack 200 and the rear subframe 300 are arranged above the plate body at intervals along the extending direction of the rear longitudinal beam 120, and a height difference is formed between the battery pack 200 and the rear subframe 300, so that a certain distance is formed between the battery pack 200 and the rear subframe 300 in the first direction X and the second direction Z;

one end of the connecting piece 400 is connected with the battery pack 200, the other end of the connecting piece 400 is connected with the rear auxiliary frame 300, and a storage space 410 is formed between the connecting piece 400 and the battery pack 200 and between the connecting piece 400 and the rear auxiliary frame 300 in a matched manner, and through the arrangement, the rear auxiliary frame 300 and the battery pack 200 are connected into a whole by the connecting piece 400, so that the connection strength of the rear auxiliary frame 300 and the battery pack 200 is enhanced;

the pipeline group is arranged above the plate body, one end of the pipeline group is positioned on one side of the battery pack 200, which is not opposite to the rear auxiliary frame 300, and the other end of the pipeline group passes through the storage space 410 and extends towards the rear auxiliary frame 300. As shown in connection with fig. 3 and 4, in particular use, the rear floor of the vehicle body is installed with the side facing away from the battery pack 200 facing upward, i.e., the battery pack 200, the rear subframe 300, the line group, and the connection 400 are all located below the rear floor of the vehicle body with the side facing away from the rear floor of the vehicle body facing toward the ground.

According to the electric automobile, a certain distance is arranged between the rear auxiliary frame 300 and the battery pack 200 in the first direction X and the second direction Z, the rear auxiliary frame 300 and the battery pack 200 are connected by the connecting piece 400, and a storage space 410 is formed.

In order to conveniently protect the high-voltage wire connection socket 220, in a preferred embodiment, the battery pack 200 includes a battery tray 210 and a battery mounted on the battery tray 210, the high-voltage wire connection socket 220 is disposed on a side of the battery tray 210 facing the rear subframe 300, the high-voltage wire connection socket 220 is located in the storage space 410, when the battery tray 210 is mounted on the plate body, a pressure release valve is further disposed on a side of the battery tray 210 facing the rear subframe 300, and the pressure release valve may be located in the storage space 410. Through the above arrangement, the storage space 410 protects the high-voltage wire-connection socket 220, and no additional parts are required to be separately added to protect the high-voltage wire-connection socket 220, thereby simplifying the structure.

In order to enhance the overall strength of the battery pack 200, specifically, the battery pack 200 further includes a reinforcing plate 230, two first corners are formed at both ends of one side of the battery tray 210 near the rear sub-frame 300, the reinforcing plate 230 covers the first corners, and through the above arrangement, the reinforcing plate 230 covers the first corners and is connected with the inner side beams 211 of the battery tray 210 and the outer side beams of the left and right sides of the battery tray 210 to form a frame structure.

In order to achieve the height difference between the battery pack 200 and the rear sub-frame 300, in a preferred embodiment, the plate body includes a first sub-plate 100 and a second sub-plate 110, one side of the second sub-plate 110 extends upward to be connected with the first sub-plate 100, and a C-shaped space is formed at the connection between the second sub-plate 110 and the first sub-plate 100, the battery pack 200 is disposed on the first sub-plate 100, and the rear sub-frame 300 is disposed on the second sub-plate 110. By arranging the battery pack 200 and the rear sub-frame 300 at the first sub-plate 100 and the second sub-plate 110 of different heights, respectively, a height difference between the battery pack 200 and the rear sub-frame 300 is realized, and a Z-direction space for downward installation of the pipeline group is ensured.

In order to more conveniently realize the installation of the rear subframe 300, specifically, the rear subframe 300 is erected between the two rear longitudinal beams 120, two ends of one side of the rear subframe 300, which is close to the battery pack 200, are provided with two second corners 310, the two second corners 310 are connected with the two rear longitudinal beams 120 in a one-to-one correspondence, and when in specific arrangement, the rear subframe 300 is in a mouth-shaped structure, two ends of one side, which is away from the battery pack 200, of the rear subframe 300 are provided with two third corners 330, the two third corners 330 are arranged opposite to the two second corners 310 in a one-to-one correspondence, and the two third corners 330 are also connected with the two rear longitudinal beams 120 in a one-to-one correspondence.

To strengthen the mounting of the rear subframe 300 to the rear side rail 120, more specifically, the electric vehicle further includes a first bracket 600 and a first through hole, wherein:

the first bracket 600 includes a first segment 610 and a second segment 620, where the first segment 610 is connected to the rear longitudinal beam 120, and when the first segment 610 is specifically set, the first segment 610 is welded to the rear longitudinal beam 120 into a whole, and the shape of the first segment 610 is matched with that of the outer surface of the rear longitudinal beam 120;

one end of the second segment 620 is connected with the first segment 610, the other end of the second segment 620 is provided with an installation part 621, the installation part 621 is provided with a horizontal installation surface which is opposite to the second corner 310, when the second segment 620 is specifically arranged, the second segment 620 is L-shaped, the vertical part of the second segment 620 is connected with the first segment 610, and the horizontal part of the second segment 620 forms the installation part 621;

the first through hole penetrates through the second corner 310 and the mounting portion 621, the fastener 700 penetrates through the first through hole to connect the second corner 310 and the first bracket 600 into a whole, and when the specific arrangement is performed, the third corner 330 in the rear subframe 300 can also be connected with the rear longitudinal beam 120 through the first bracket 600, and in order to ensure the arrangement space of the pipeline group in the first direction X, the distance between the second corner 310 and the battery pack 200 in the horizontal direction can be 212mm, 214mm, 220mm or more. As can be appreciated, because of the C-shaped space formed at the connection between the second sub-plate 110 and the first sub-plate 100, the rear side member 120 connected to the second sub-plate 110 and the first sub-plate 100 in the left-right direction also has the C-shaped space, and the rear frame is often connected to the C-shaped space of the rear side member 120, the corner is indirectly connected to the rear side member 120 by using the first bracket 600 having a horizontal plane, so that the connection strength between the rear frame and the rear side member 120 is ensured.

In order to conveniently connect the rear subframe 300 and the battery pack 200 as one body, further, the number of the connecting members 400 is two, wherein:

the two connecting pieces 400 are arranged at intervals, the two connecting pieces 400 are in one-to-one correspondence with the two second corners 310, and the connecting pieces 400 comprise a first connecting piece 420 and a second connecting piece 430;

the first connecting piece 420 has an L-shaped structure, the first connecting piece 420 includes a horizontal portion and a vertical portion connected with the horizontal portion, the horizontal portion is connected with the top end of the battery pack 200, and the horizontal portion at least covers the interval portion between the battery pack 200 and the second corner 310, when the first connecting piece is specifically arranged, the horizontal portion is connected with the top end of the reinforcing plate 230, specifically, the first protruding welding studs 421 distributed at intervals penetrate through the horizontal portion of the first connecting piece 420 and the reinforcing plate 230 to reach the outer shell of the battery tray 210;

one end of the second connection piece 430 is connected to a side of the second corner 310 remote from the first bracket 600, and the other end of the second connection piece 430 is connected to the vertical portion. When the connecting piece is specifically arranged, the second connecting piece 430 is also in an L shape, the horizontal part of the second connecting piece 430 is connected with the second corner 310, the vertical part of the second connecting piece 430 is connected with the vertical part of the first connecting piece 420 into a whole through three bolts, the horizontal part of the second connecting piece 430 is separately provided with a second through hole, the fastener 700 sequentially penetrates through the second through hole and the first through hole, the connecting piece 400, the second corner 310 and the first bracket 600 are connected into a whole, and the fastener 700 can be a bolt; meanwhile, in order to prevent the relative rotation between the connection member 400 and the second corner 310, the horizontal portion of the second connection piece 430 may be further provided with a third through hole through which the second projection stud 431 is correspondingly connected with the hole of the second corner 310.

Referring to fig. 5, in order to provide driving force for the electric vehicle, further, a motor is mounted on the rear subframe 300, and when the electric vehicle is specifically configured, the rear subframe 300 is integrally formed, the rear subframe 300 includes a front cross member 320, the front cross member 320 is provided with a second bracket 321, and one side of the motor, which is close to the battery pack 200, is mounted on the second bracket 321.

In order to avoid safety accidents of the electric vehicle under the extreme conditions of collision, rolling, falling and the like, the safety distance between the motor and the battery pack 200 is at least 15mm, and the safety distance between the motor and the battery pack 200 can be 18mm, 22mm, 25mm, 30mm or more when the electric vehicle is specifically arranged.

In order to more conveniently carry out reasonable installation with the pipeline group, still further, electric automobile still includes the stopper, and the stopper sets up in floor behind the automobile body, wherein:

the pipeline group comprises a first pipeline group 500 and a second pipeline group 530, and the first pipeline group 500 and the second pipeline group 530 are respectively positioned at two sides of the battery pack 200, which are not opposite to the rear auxiliary frame 300;

the first pipeline group 500 comprises a brake pipeline 510 and a first water pipe 520, the second pipeline group 530 comprises a second water pipe 531, when the electric vehicle is specifically arranged, the number of the brake pipelines 510 is generally two, the electric vehicle further comprises a high-voltage wire harness 532, and the high-voltage wire harness 532 and the second water pipe 531 are positioned on the same side of the battery pack 200;

the first water pipe 520 and the second water pipe 531 respectively pass through the storage spaces 410 near the respective storage spaces and extend to the motor toward the rear subframe 300, that is, the number of the connecting pieces 400 is two, the storage spaces 410 formed between the connecting pieces 400 and the battery pack 200 and between the connecting pieces and the rear subframe 300 are two, the storage spaces 410 near the first pipeline group 500 are first storage spaces, the storage spaces 410 near the second pipeline group 530 are second storage spaces, and the first water pipe 520 and the second water pipe 531 respectively pass through the corresponding first storage spaces and second storage spaces and extend to the motor toward the rear subframe 300;

the brake pipe 510 extends to the brake after passing through the storage space 410 near itself, i.e., the brake pipe 510 extends to the brake after passing through the first storage space.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. The utility model provides an electric automobile which characterized in that includes floor behind the automobile body, battery package, back sub vehicle frame, pipeline group and at least one connecting piece, wherein:

one end of the connecting piece is connected with the battery pack, the other end of the connecting piece is connected with the rear auxiliary frame, the connecting piece comprises a first connecting piece and a second connecting piece which are all L-shaped, the first connecting piece and the second connecting piece all comprise horizontal parts and vertical parts connected with the horizontal parts, the horizontal parts of the first connecting piece are connected with the battery pack, the vertical parts of the first connecting piece are connected with the vertical parts of the second connecting piece, the horizontal parts of the second connecting piece are connected with the rear auxiliary frame, and the connecting piece is matched with the battery pack and the rear auxiliary frame to form a storage space;

2. The electric vehicle of claim 1, wherein the battery pack includes a battery tray and a battery mounted to the battery tray, a side of the battery tray facing the rear subframe is provided with a high-voltage wiring socket, and the high-voltage wiring socket is located in the storage space.

3. The electric vehicle of claim 2, characterized in that the battery pack further comprises a reinforcement plate, two ends of one side of the battery tray near the rear subframe have two first corners, and the reinforcement plate wraps the first corners.

4. The electric automobile of claim 1, wherein the plate body comprises a first sub-plate and a second sub-plate, one side of the second sub-plate extends upwards to be connected with the first sub-plate, a C-shaped space is formed at the connection part of the second sub-plate and the first sub-plate, the battery pack is arranged on the first sub-plate, and the rear auxiliary frame is arranged on the second sub-plate.

5. The electric vehicle of claim 4, wherein the rear subframe is erected between the two rear stringers, and two ends of the side near the battery pack are provided with two second corners, and the two second corners are connected with the two rear stringers in a one-to-one correspondence.

6. The electric vehicle of claim 5, further comprising a first bracket and a first through hole, wherein:

7. The electric vehicle of claim 6, characterized in that the number of connectors is two, wherein:

8. The electric vehicle of claim 7, characterized in that the rear subframe has an electric motor mounted thereon.

9. The electric vehicle of claim 8, characterized in that the safety distance between the motor and the battery pack is at least 15mm.

10. The electric vehicle of claim 8, further comprising a brake disposed on the rear floor of the vehicle body, wherein: