CN115503840A - New energy automobile and front floor structure thereof - Google Patents

Abstract

The invention provides a new energy automobile and a front floor structure thereof; the new energy automobile comprises a battery upper cover plate, wherein a front floor structure and the battery upper cover plate form a CTC integrated upper cover plate by adopting an integrated design; the CTC integrated upper cover plate is divided into at least two modules along the x direction, wherein the first module is fixedly connected or detachably connected with the peripheral connecting piece, and the second module is detachably connected with the peripheral connecting piece; when the vehicle expands, the wheel base is changed on one side of the CTC integrated upper cover plate close to the second module. The invention has the following beneficial effects: 1. when the wheel base bandwidth changes, the second module can be changed, the first module is guaranteed not to change, and development cost is saved. For example, when the vehicle type is derived from the A level to the C level, the difference of the wheel base can be completely realized by only changing the second module, and the maximum generalization requirement of the vehicle body is met; 2. the second module possesses detachability, has satisfied the maintenance of battery package internal control element, and maintenance cost is low, convenient operation.

Description

New energy automobile and front floor structure thereof

Technical Field

The invention relates to the field of automobile manufacturing and research and development, in particular to a new energy automobile and a front floor structure thereof.

Background

CTC (Cell to chasis or Cell to Car) technology refers to the integration of a vehicle body front floor and a battery pack upper cover plate, and the battery pack unit is directly integrated on a vehicle body; the upper cover plate of the battery pack takes the function of the front floor into consideration, so that the feet of a driver and passengers directly fall on the upper cover plate of the battery pack; the two-in-one structure saves a front floor and releases the vertical space in the vehicle (the vertical space can be saved by 10 mm-20 mm);

the front floor integrated battery pack upper cover plate is of an integral type, the front part of the front floor integrated battery pack upper cover plate is connected with the lower section of the front dash plate, the rear part of the front floor integrated battery pack upper cover plate is connected with the middle floor, and the two sides of the front floor integrated battery pack upper cover plate are connected with the threshold boundary beam left side and the threshold boundary beam right side; the front row seat front cross beam, the front row seat rear cross beam, the front floor rear cross beam and the front floor integrated battery pack upper cover plate are connected through spot welding (or SPR).

Although the front floor of the vehicle body and the upper cover plate of the battery pack are combined into a whole, the integrated upper cover plate of the battery pack of the front floor of the whole vehicle body has the following problems:

1. the development of different vehicle types with the same platform wheelbase and different sizes is not facilitated;

2. the internal elements of the battery pack shell are inconvenient to maintain, and the operation difficulty of maintenance and replacement is high;

3. a one-piece front floor, resulting in high stamping and shipping costs.

Disclosure of Invention

The invention provides a front floor structure for a new energy automobile, which aims to solve the technical problems in the background art.

It should be noted that, in the X, Y, Z directions mentioned herein, the X direction refers to the longitudinal direction of the vehicle, the Y direction refers to the transverse direction of the vehicle, and the Z direction refers to the vertical direction.

The invention provides a front floor structure for a new energy automobile, which comprises a battery upper cover plate, wherein the front floor structure and the battery upper cover plate form a CTC integrated upper cover plate by adopting an integrated design; the CTC integrated upper cover plate is divided into at least two modules along the x direction, wherein the first module is fixedly connected or detachably connected with the peripheral connecting piece, and the second module is detachably connected with the peripheral connecting piece; when the vehicle expands, the wheel base is changed on one side of the CTC integrated upper cover plate close to the second module.

In the further scheme of this application, first module and second module correspond the regional and control element region of electric core of battery package respectively.

In a further aspect of the present application, the first module comprises a CTC integrated upper cover plate front section and a CTC integrated upper cover plate middle section; the second module comprises a CTC integrated upper cover plate rear section; the front section of the CTC integrated upper cover plate is respectively connected with the lower section of the front wall plate and the middle section of the CTC integrated upper cover plate, the middle section of the CTC integrated upper cover plate is respectively connected with the front section of the CTC integrated upper cover plate and the rear section of the CTC integrated upper cover plate, and the rear section of the CTC integrated upper cover plate is respectively connected with the middle section of the CTC integrated upper cover plate and the middle floor plate; the battery pack is provided with a control element at the lower side of the area covered by the rear section of the corresponding CTC integrated upper cover plate.

In a further aspect of the present application, wherein the front section of the CTC integrated upper cover plate and the middle section of the CTC integrated upper cover plate and the peripheral connecting member are sealed with structural adhesive and form a fixed connection in cooperation with spot welding or SPR; or a sealing rubber strip is adopted to be matched with the screw joint to form detachable connection, and the rear section of the CTC integrated upper cover plate and the peripheral connecting piece are formed into detachable connection by adopting the sealing rubber strip to be matched with the screw joint.

In this application optional scheme, the both ends of the integrated upper cover plate back end of CTC are provided with bolt and rivet nut, carry out the spiro union through bolt and rivet nut to adopt joint strip to seal in joint gap department, change joint strip again when assembling the integrated upper cover plate back end of CTC once more.

In an optional scheme of the application, the new energy automobile comprises a left threshold boundary beam and a right threshold boundary beam, and a front row seat front cross beam, a front row seat rear cross beam and a front floor rear cross beam are erected on the left threshold boundary beam and the right threshold boundary beam in the X direction in sequence; and dividing the CTC integrated upper cover plate into a CTC integrated upper cover plate front section, a CTC integrated upper cover plate middle section and a CTC integrated upper cover plate rear section by taking the front row seat front cross beam and the front floor rear cross beam as boundaries.

In an optional scheme of the application, a front row seat rear cross beam is taken as a boundary, one side, close to the rear section of the CTC integrated upper cover plate, of the CTC integrated upper cover plate is divided into a first area, and the rear section of the CTC integrated upper cover plate is divided into a second area; when the vehicle is expanded, the vehicle type expansion is realized by changing the wheel base in the first area or the second area, and the front section of the CTC integrated upper cover plate is unchanged.

In an optional scheme of the application, the upper surfaces of the front section of the CTC integrated upper cover plate, the middle section of the CTC integrated upper cover plate and the rear section of the upper cover plate are designed to be flat.

In an optional scheme of the application, a cooling flow channel is arranged on the upper side of the CTC integrated upper cover plate, and the cooling flow channel comprises a water inlet flow channel and a water outlet flow channel.

The second aspect of the invention provides a new energy automobile, a battery pack; the left threshold boundary beam and the right threshold boundary beam are sequentially provided with a front row seat front cross beam, a front row seat rear cross beam and a front floor rear cross beam in an X direction; a middle floor and a dash panel; also comprises a front floor structure.

In summary, the present invention provides a front floor structure for a new energy vehicle, which divides a CTC integrated upper cover plate into at least two modules along an x-direction based on the CTC integrated upper cover plate formed by an integrated design with a battery upper cover plate, wherein the first module and a peripheral connecting member are fixedly or detachably connected, and the second module and the peripheral connecting member are detachably connected, and compared with the prior art, the present invention has the following advantages:

1. when the wheel base bandwidth changes, the second module can be changed, the first module is guaranteed not to change, and development cost is saved. For example, when the vehicle type is derived from the A level to the C level, the difference of the wheel base can be completely realized by only changing the second module, and the maximum generalization requirement of the vehicle body is met;

2. the second module has detachability, meets the requirement of maintaining the control element in the battery pack, and has low maintenance cost and convenient operation;

3. because the integrated upper cover plate of CTC divides into two at least modules along the x to, can separately make and assemble, increase preparation efficiency and technology degree of difficulty, and convenient transportation.

Drawings

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

Fig. 1 is a schematic structural diagram of a front floor structure for a new energy vehicle in an installation state according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of a front floor structure of a new energy vehicle in an installation state according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a CTC integrated upper cover plate back section and its perimeter connection provided by an embodiment of the present invention; and

fig. 4 is a partial cross-sectional view of a CTC integrated upper lid provided in an embodiment of the invention.

Reference numerals

1000. A lower vehicle body; 100. The CTC is integrated with the upper cover plate;

200. a dash panel; 300. A left threshold sill;

400. a right threshold sill; 500. A front seat front cross member;

600. a front seat rear cross member; 700. A front floor rear cross member;

800. a middle floor; 101. A first module;

102. a second module; 101a, CTC integrated upper cover plate front section;

101b, integrating the CTC into the middle section of the upper cover plate; 102a, CTC integration upper cover plate rear section;

201. a bolt; 202. Pulling and riveting the nut;

203. and sealing rubber strips.

Detailed Description

In order to make the above and other features and advantages of the present invention more apparent, the present invention is further described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting, as those of ordinary skill in the art will recognize.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The invention provides a general inventive concept aiming at the problems in the prior art, and aims to solve the technical problems that the front floor of a vehicle body and the upper cover plate of a battery pack adopted in the prior art are combined into a whole to form a CTC integrated upper cover plate, so that the space utilization rate and the light weight of the vehicle body are realized, but the upper cover plate cannot be suitable for expansion, is inconvenient to disassemble, assemble, maintain and transport, has high manufacturing cost and the like.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a lower vehicle body for a new energy vehicle according to an embodiment of the present invention, that is, a schematic structural diagram of a front floor structure in an installation state;

this new energy automobile includes the lower automobile body 1000 that independently traveles, and from the past to back along automobile body X orientation, lower automobile body 1000 includes respectively:

the front wall plate 200 is a partition plate between the engine compartment and the passenger compartment, so that waste gas, high temperature and noise in the engine compartment are prevented from entering the passenger compartment, and a certain mounting effect is provided;

the left threshold boundary beam 300 and the right threshold boundary beam 400 are respectively arranged at the left side and the right side of the passenger compartment, and the left threshold boundary beam 300 and the right threshold boundary beam 400 can be profile pieces for providing support and absorbing certain transverse impact;

the front seat front cross beam 500, the front seat rear cross beam 600 and the front floor rear cross beam 700 are respectively transversely arranged between the left threshold side beam 300 and the right threshold side beam 400, and are used for providing support for the passenger compartment and providing structural strength for the left threshold side beam 300 and the right threshold side beam 400;

a middle floor 800 connected between the passenger cabin and the trunk;

it will be appreciated that the overall underbody floor structure and cross member structure support the weight of the upper body, the shutters and other assemblies and associated accessories, and occupants, while withstanding the loads, vibrations, shocks and torques generated during vehicle motion.

The lower body 1000 further includes:

the battery upper cover plate is arranged between the left doorsill edge beam 300 and the right doorsill edge beam 400 and is positioned at the lower sides of the front row seat front cross beam 500, the front row seat rear cross beam 600 and the front floor rear cross beam 700, and the battery pack (the angle is not shown) covered by the battery upper cover plate is arranged at the lower side of the battery upper cover plate;

in the embodiment of the present invention, the upper cover plate 100 and the front floor structure of the battery are also integrated to form the CTC integrated upper cover plate 100; in order to reduce vertical space, increase the volume of module in the battery package to improve whole car continuation of the journey and realize whole car lightweight.

On the basis of the CTC-based integrated upper cover plate 100, the embodiment of the present invention provides a general inventive concept to solve the above technical problems:

the CTC integrated upper cover 100 is divided into at least two modules along the x-direction, and each module can be assembled with each other to form the CTC integrated upper cover 100.

The first module 101 and the peripheral connecting piece are fixedly connected or detachably connected, and the second module 102 and the peripheral connecting piece are detachably connected;

it can be understood that the first module 101 corresponds to the electric core region for the battery pack, and the second module 102 corresponds to the control element region for the battery pack, and because the second module 102 has detachability, the requirement for maintaining the control element in the battery pack is met, and the modules can be detached independently without integrally changing the CTC integrated upper cover plate 100.

In some embodiments, if the cell region requires maintenance, the first module 101 may also be detachably connected to satisfy the disassembling and assembling performance and the maintenance performance.

As the vehicle expands, the wheelbase change is made on the side of the CTC integrated upper deck 100 adjacent to the second module 102.

It can be understood that when the vehicle expands, that is, the wheel base bandwidth of the entire vehicle changes, the vehicle can be realized by one side close to the second module 102, so that other sides are not changed, and the development cost is saved. For example, when the vehicle type is changed from class A to class C, the difference of the wheel base can be completely realized by only changing the CTC integrated upper cover plate 100 close to one side of the second module 102, thereby meeting the requirement of the maximum generalization of the vehicle body.

Referring to fig. 1 and fig. 2, fig. 2 is another schematic structural diagram of a front floor structure of a new energy vehicle in an installation state according to an embodiment of the present invention; the first module 101 comprises a CTC integrated upper cover plate front section 101a and a CTC integrated upper cover plate middle section 101b;

the second module 102 includes a CTC integrated upper cover plate back section 102a;

the front section 101a of the CTC integrated upper cover plate is respectively connected with the lower section of the front wall plate 200 and the middle section 101b of the CTC integrated upper cover plate, the middle section 101b of the CTC integrated upper cover plate is respectively connected with the front section 101a of the CTC integrated upper cover plate and the rear section 102a of the CTC integrated upper cover plate, and the rear section 102a of the CTC integrated upper cover plate is respectively connected with the middle section 101b of the CTC integrated upper cover plate and the middle floor plate 800; the battery pack is provided with a control element at the lower side of the area covered by the rear section 102a of the corresponding CTC integrated upper cover plate.

It can be appreciated that the CTC integrated upper deck 100 is divided into a CTC integrated upper deck front section 101a, a CTC integrated upper deck middle section 101b and a CTC integrated upper deck rear section 102a bounded by the front row seat front cross member 500 and the front floor rear cross member 700.

In an optional scheme of the embodiment of the invention, the front section 101a of the CTC integrated upper cover plate, the middle section 101b of the CTC integrated upper cover plate and the peripheral connecting piece are fixedly connected, and the rear section 102a of the CTC integrated upper cover plate and the peripheral connecting piece are detachably connected.

It can be understood that the CTC integrated upper cover plate front section 101a and the CTC integrated upper cover plate middle section 101b correspond to the cell area of the battery pack, and the CTC integrated upper cover plate rear section 102a corresponds to the control element area of the battery pack, because the CTC integrated upper cover plate rear section 102a and the CTC integrated upper cover plate rear section 102a take the front floor rear cross beam 700 as a boundary, when monitoring or maintaining the control element, the cross beam structure erected on the left threshold side beam 300 and the right threshold side beam 400 does not need to be changed, the internal control element can be operated only by directly disassembling the CTC integrated upper cover plate rear section 102a, and convenience in maintenance is realized.

The front section 101a of the CTC integrated upper cover plate, the middle section 101b of the CTC integrated upper cover plate and the peripheral connecting piece are sealed by structural adhesive and form fixed connection by matching spot welding or SPR; or a sealing rubber strip is matched with the screw joint to form detachable connection.

It can be understood that when the electric core does not need to be maintained, the CTC integrated upper cover plate front section 101a and the CTC integrated upper cover plate middle section 101b can be fixedly connected by spot welding or SPR, the structural adhesive is used for sealing the gap of the connection part and keeping the sealing property of the lower cavity of the cover plate, and if the electric core needs to be maintained, the CTC integrated upper cover plate front section 101a and the CTC integrated upper cover plate middle section 101b can be detachably connected.

Furthermore, the CTC integrated upper cover plate rear section 102a and the peripheral connecting piece are in detachable connection by adopting a sealing rubber strip to be matched and screwed.

Referring to fig. 3, fig. 3 is a cross-sectional view of a CTC integrated upper cover plate back section 102a and its peripheral connectors according to an embodiment of the invention.

The two ends of the CTC integrated upper cover plate rear section 102a are provided with bolts 201 and rivet nuts 202, the bolts 201 and the rivet nuts 202 are in threaded connection, a sealing rubber strip 203 is adopted for sealing a connection gap, and the sealing rubber strip is replaced when the CTC integrated upper cover plate rear section 102a is assembled again.

Specifically, the installation portion extends outwards from two ends of the rear section 102a of the CTC integrated upper cover plate, the installation portion is fastened through the bolt 201 and the rivet nut 202, and meanwhile, the joint of the bolt 201 and the rivet nut 202 is sealed through the sealing rubber strip 203, so that the internal sealing performance of the CTC integrated upper cover plate is maintained.

When maintenance is required, the bolt 201 and the rivet nut 202 are spirally detached along the reverse direction of the mounting direction, the sealing rubber strip is torn off, the CTC integrated upper cover plate rear section 102a is detached, and then the internal control element can be directly maintained without detaching other structural parts or changing the other structural parts for a second time.

When the CTC integrated upper cover plate rear section 102a is assembled again, the CTC integrated upper cover plate rear section 102a is screwed again and the sealing rubber strip is replaced, so that the whole process is low in maintenance cost and simple and convenient to operate.

Referring to fig. 4, fig. 4 is a partial cross-sectional view of a CTC integrated upper lid 100 according to an embodiment of the invention.

With the front row seat rear cross beam 600 as a boundary, dividing one side of the CTC integrated upper cover plate 100 close to the CTC integrated upper cover plate rear section 102a into a first area a, and dividing the CTC integrated upper cover plate rear section 102a into a second area b, wherein the first area a is the front row seat rear cross beam 600-middle floor 800, and the second area b is the CTC integrated upper cover plate rear section 102a, namely the front floor rear cross beam 700-middle floor 800;

when the vehicle is expanded, the vehicle type expansion is realized by changing the wheel base in the first area or the second area, and the front section of the CTC integrated upper cover plate is unchanged.

It can be understood that when the wheelbase bandwidth is changed, the CTC integrated upper cover plate rear section 102a can be changed, so that the CTC integrated upper cover plate front section 101a and the CTC integrated upper cover plate middle section 101b are not changed, and the development cost is saved. For example, when the vehicle type is derived from grade A to grade C, the difference of the wheel base can be completely realized by only changing CTC integrated upper cover plate rear section 102a, and the requirement of maximum generalization of the vehicle body is met. Moreover, when the front passenger is changed, the CTC integrated upper cover front section 101a cannot be universal for each vehicle type, but can be realized by moving the CTC integrated upper cover middle section 101b backward and changing the CTC integrated upper cover front section 101a and the CTC integrated upper cover rear section 102a.

With reference to fig. 2, in a further embodiment of the present invention, the upper surfaces of the front CTC integrated upper cover plate section 101a, the middle CTC integrated upper cover plate section 101b and the rear upper cover plate section 102a are designed to be planarized.

It is understood that the upper surfaces of the CTC integrated upper cover plate front section 101a, the CTC integrated upper cover plate middle section 101b and the upper cover plate rear section 102a are all planarized, i.e., the upper portion of the CTC integrated upper cover plate 100 is completely planarized. The space utilization in the cabin that traveles can be increased to the first aspect of planarization design for the cabin that traveles is interior when designing better nimble, and the planarization design of the integrated upper cover plate 100 of CTC simultaneously can need not to have structural requirement to last automobile body, thereby adapts to the last automobile body of various motorcycle types, realizes overall structure's expansion.

On the other hand, the upper side of the CTC integrated upper cover plate is provided with a cooling flow passage (not numbered), and the cooling flow passage comprises a water inlet flow passage and a water outlet flow passage.

Further, it should be understood by those skilled in the art that, if the CTC integrated upper cover plate 100 and the new energy vehicle thereof provided by the embodiment of the present invention are used, all or part of the related sub-modules are combined and replaced by fusing, simple changing, mutual changing, and the like, for example, the components are placed and moved; or the products formed by the components are integrally arranged; or a detachable design; it is within the scope of the present invention to replace the corresponding components of the present invention with such a device/apparatus/system.

The embodiment of the invention also provides a new energy automobile, which comprises a battery pack; the side sill structure further comprises a left side sill 300 and a right side sill 400, and a front row seat front cross beam 500, a front row seat rear cross beam 600 and a front floor rear cross beam 700 are sequentially erected on the left side sill 300 and the right side sill 400 along the X direction; and a middle floor 800 and a dash panel 200; also included is a front floor structure (CTC integrated upper deck 100) as described above.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A front floor structure for a new energy automobile comprises a battery upper cover plate, wherein the front floor structure and the battery upper cover plate form a CTC integrated upper cover plate by adopting an integrated design; it is characterized in that the preparation method is characterized in that,

the CTC integrated upper cover plate is divided into at least two modules along the x direction, wherein the first module is fixedly connected or detachably connected with the peripheral connecting piece, and the second module is detachably connected with the peripheral connecting piece;

when the vehicle is expanded, the wheelbase is changed on one side, close to the second module, of the CTC integrated upper cover plate.

2. The front floor structure of claim 1, wherein the first module and the second module correspond to a cell area and a control element area of a battery pack, respectively.

3. Front floor structure according to claim 2,

the first module comprises a front section of the CTC integrated upper cover plate and a middle section of the CTC integrated upper cover plate;

the second module comprises a CTC integrated upper cover plate rear section;

the front section of the CTC integrated upper cover plate is respectively connected with the lower section of the front wall plate and the middle section of the CTC integrated upper cover plate, the middle section of the CTC integrated upper cover plate is respectively connected with the front section of the CTC integrated upper cover plate and the rear section of the CTC integrated upper cover plate, and the rear section of the CTC integrated upper cover plate is respectively connected with the middle section of the CTC integrated upper cover plate and the middle floor plate; the battery pack is provided with a control element at the lower side of the area covered by the rear section of the corresponding CTC integrated upper cover plate.

4. Front floor structure according to claim 3,

the front section of the CTC integrated upper cover plate, the middle section of the CTC integrated upper cover plate and the peripheral connecting piece are sealed by structural adhesive and form fixed connection by matching spot welding or SPR (surface plasmon resonance); or a sealing rubber strip is matched with the screw joint to form detachable connection;

the CTC integrated upper cover plate rear section and the peripheral connecting piece are detachably connected by adopting a sealing rubber strip matched with a screw joint.

5. The front floor structure according to claim 3, wherein bolts and rivet nuts are provided at both ends of the CTC integrated upper cover plate rear section, and are screwed together by the bolts and the rivet nuts, and are sealed by a sealing rubber strip at a joint gap, and the sealing rubber strip is replaced when the CTC integrated upper cover plate rear section is reassembled.

6. The front floor structure according to claim 3, wherein the new energy automobile comprises a left threshold boundary beam and a right threshold boundary beam, and a front row seat front cross beam, a front row seat rear cross beam and a front floor rear cross beam are erected on the left threshold boundary beam and the right threshold boundary beam in the X direction in sequence;

and dividing the CTC integrated upper cover plate into a front CTC integrated upper cover plate section, a middle CTC integrated upper cover plate section and a rear CTC integrated upper cover plate section by taking the front row seat front cross beam and the front floor rear cross beam as boundaries.

7. The front floor structure of claim 6, wherein a side of said CTC integrated upper deck proximate a rear section of the CTC integrated upper deck is divided into a first area and a second area bounded by said front row seat rear cross member;

when the vehicle is expanded, the wheel base change is carried out in the first area or the second area to realize the vehicle type expansion, and the front section of the CTC integrated upper cover plate is unchanged.

8. The forefloor structure of any one of claims 1-7, wherein the upper surfaces of the CTC integrated upper cover plate front section, the CTC integrated upper cover plate middle section, and the upper cover plate rear section are all of a flattened design.

9. The front floor structure according to any one of claims 1 to 7, wherein the upper side of the CTC integrated upper cover plate is provided with a cooling flow passage, and the cooling flow passage comprises a water inlet flow passage and a water outlet flow passage.

10. The utility model provides a new energy automobile which characterized in that includes:

a battery pack;

the left threshold boundary beam and the right threshold boundary beam are sequentially provided with a front row seat front cross beam, a front row seat rear cross beam and a front floor rear cross beam in an erected mode along the X direction;

a middle floor and a dash panel;

further comprising a front floor structure as claimed in any one of claims 1 to 9.

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