Vehicle body modularization construction method

Abstract

The invention discloses a vehicle body modularization construction method, and relates to the technical field of vehicle bodies, the vehicle body modularization construction method comprises the following steps: firstly, constructing a front anti-collision beam, a cabin, a front plate body, a rear plate body and a rear anti-collision beam according to universal parts among various vehicle types, and when the required vehicle types are assembled, according to different vehicle types to be assembled, assembling the front anti-collision beam, the cabin, the front plate body, the rear plate body and the rear anti-collision beam; a special energy absorption box, a first special connecting piece, a second special connecting piece and a special front window sealing assembly corresponding to a to-be-assembled vehicle model are constructed, the parts are spliced, assembling work of the to-be-assembled vehicle model can be completed, and the anti-collision beam, the cabin, the front plate body, the rear plate body and the rear anti-collision beam are arranged to be universal parts. The verification work of the anti-collision beam, the engine room, the front plate body, the rear plate body and the rear anti-collision beam can be reduced, the number of verification times of parts is reduced, the period needed by verification is shortened, and the time needed by vehicle body development is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle bodies, and in particular to a vehicle body modular construction method. Background Art

[0002] The update speed of cars and trams is getting faster and faster, and the body development cycle needs to be controlled shorter and shorter. In the development of different models, there are differences in size between different models, and a large number of body parts need to be redeveloped. In the process of redeveloping a large number of body parts, the relevant performance of the newly developed parts needs to be verified. The verification cycle is long, which prolongs the time required for body development. Summary of the invention

[0003] The main purpose of the invention is to propose a modular construction method for a vehicle body, aiming to reduce the time required for vehicle body development.

[0004] To achieve the above object, the vehicle body modular construction method proposed in the present invention comprises the following steps:

[0005] According to the intersection between the platforms of the bodies of various vehicle models, the platform of the body is divided into a front anti-collision beam, a cabin, a front plate body, a rear plate body and a rear anti-collision beam which are sequentially arranged along the length direction of the body, the cabin is used for front overhang installation, and the rear plate body is used for rear overhang installation;

[0006] The front anti-collision beam, the engine compartment, the front panel, the panel and the rear anti-collision beam are set as common parts between various vehicle models, and the sizes of the front anti-collision beam, the engine compartment, the front panel, the rear panel and the rear anti-collision beam are determined;

[0007] Constructing a special energy absorption box according to the vehicle model to be assembled, wherein the special energy absorption box connects the front anti-collision beam and the engine compartment;

[0008] A first dedicated connector is constructed according to the vehicle model to be assembled, one end of the front plate body in the length direction is used to connect the front anti-collision beam, and the first dedicated connector is used to connect the front plate body and the rear floor;

[0009] Constructing a second dedicated connecting piece according to the vehicle model to be assembled, wherein the second dedicated connecting piece is used to connect the rear plate body and the rear anti-collision beam;

[0010] A special front window sealing assembly is constructed according to the vehicle type to be assembled, and the special front window sealing assembly is installed on the cabin.

[0011] In one embodiment, a dedicated energy absorption box is constructed according to the vehicle type to be assembled, including:

[0012] Determine the overall length of the vehicle body according to the vehicle model to be assembled, determine the length of the front overhang of the vehicle body according to the overall length of the vehicle body, and determine the distance between the rear end surface of the front anti-collision beam and the installation surface of the dedicated energy absorption box according to the length of the front overhang of the vehicle body;

[0013] The length of the special energy absorption box is determined according to the length of the front overhang, the distance from the bumper skin to the front end of the foam energy absorption block, the thickness of the foam energy absorption block, the thickness of the front anti-collision beam and the distance from the special energy absorption box installation surface to the front wheel center of the vehicle body to construct the special energy absorption box.

[0014] In one embodiment, a first dedicated connector is constructed according to the vehicle type to be assembled, including:

[0015] Determine the length of the vehicle body according to the vehicle model to be assembled, and determine the wheelbase of the vehicle body according to the length of the vehicle body;

[0016] The length of the first dedicated connecting member is determined according to the wheelbase of the vehicle body, the length of the front cabin, the length of the front plate body, and the length of the rear plate body to construct the first dedicated connecting member.

[0017] In one embodiment, a second dedicated connector is constructed according to the vehicle type to be assembled, including:

[0018] Determine the overall length of the vehicle body according to the vehicle model to be assembled, and determine the length of the rear overhang of the vehicle body according to the overall length of the vehicle body;

[0019] The length of the second dedicated connecting member is determined based on the length of the rear overhang of the vehicle body, the length from the rear wheel center of the vehicle body to the rear side of the rear plate, the length of the rear energy absorption box, the length of the rear anti-collision beam, and the length from the rear bumper to the rear anti-collision beam to construct the second dedicated connecting member.

[0020] In one embodiment, a mounting cavity is constructed at the front side of the engine compartment so that the width of the mounting cavity is greater than the width of the powertrain of different vehicle models, and the length of the mounting cavity is greater than the length of the powertrain of different vehicle models.

[0021] In one embodiment, two front longitudinal beams are constructed at the front side of the nacelle, so that the two front longitudinal beams fix the power assembly at opposite sides of the power assembly.

[0022] In one embodiment, a first tower top is constructed by using the intersecting parts of tower tops of multiple different vehicle models, and the part of the tower top of the vehicle body to be assembled that does not intersect with the first tower top is used as a tower top-specific external component, and a corresponding tower top-specific external component is constructed. When installing the tower top, the tower top-specific external component corresponding to the vehicle model to be assembled is installed on the first tower top.

[0023] In one embodiment, the front plate body and the rear plate body are both provided with a first support and a second support for supporting the seat, and a first special extension piece and a second special extension piece are constructed according to the vehicle type to be assembled, so that the first special extension piece is used to connect the first support and the seat, and the second special extension piece is used to connect the second support and the seat.

[0024] In one embodiment, a set of envelopes of front wheels of various vehicle models is used as the first envelope, and a set of envelopes of transmission shafts of various vehicle models is used as the second envelope;

[0025] Two front longitudinal beams are constructed on the front side of the nacelle such that the front longitudinal beams avoid the first envelope and the second envelope.

[0026] In one embodiment, a set of envelopes of rear wheels of various vehicle models is used as the third envelope, a set of envelopes of shock absorbers of various vehicle models is used as the fourth envelope, a set of envelopes of rear upper tie rods of various vehicle models is used as the fifth envelope, and a set of envelopes of front upper tie rods of various vehicle models is used as the sixth envelope;

[0027] The rear plate is constructed so that the rear plate avoids the third envelope, the fourth envelope, the fifth envelope and the sixth envelope.

[0028] The technical solution of the present invention is to first construct the front anti-collision beam, engine room, front panel, rear panel and rear anti-collision beam according to the common parts among various car models when assembling the car body. When assembling the required car model, according to the different car models to be assembled, the special energy absorption box, the first special connecting part, the second special connecting part and the special front window assembly corresponding to the car model to be assembled are constructed, and the above parts are spliced ​​together to complete the assembly work of the car model to be assembled. By setting the anti-collision beam, engine room, front panel, rear panel and rear anti-collision beam as common parts, the verification work of the anti-collision beam, engine room, front panel, rear panel and rear anti-collision beam can be reduced, the number of verifications of parts is reduced, the verification cycle is shortened, and the time required for car body development is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 A structural schematic diagram of an embodiment of a vehicle body modular construction method provided by the present invention;

[0031] Figure 2 for Figure 1 Schematic diagram of the connection of the special energy absorption box;

[0032] Figure 3 for Figure 1 A schematic diagram of the connection structure of the second special part;

[0033] Figure 4 for Figure 1 Schematic diagram of the connection structure of the special front window sealing assembly;

[0034] Figure 5 for Figure 1 Schematic diagram of the connection structure of the special external parts on the top of the middle tower;

[0035] Figure 6 for Figure 1 Schematic diagram of the connection structure of the first special expansion piece.

[0036] Description of Figure Numbers:

[0037] 1. Front anti-collision beam; 2. Engine room; 21. Installation cavity; 22. Front longitudinal beam; 3. Front panel; 4. Rear panel; 5. Rear anti-collision beam; 51. Rear energy absorption box; 6. Special energy absorption box; 7. First special connecting piece; 8. Second special connecting piece; 9. Special front sealing window assembly; 10. First tower top; 11. Tower top special external piece; 12. First support; 13. Second support; 14. First special extension piece; 15. Second special extension piece.

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] In the development of different models, there are differences in size between different models, and there are also common parts between different models; in the process of redeveloping a large number of parts of the body, the relevant performance of the newly developed parts needs to be verified. The verification cycle is long, which prolongs the time required for body development.

[0043] The invention provides a vehicle body modular construction method.

[0044] See also Figure 1 , Figure 2 and Figure 3 In one embodiment of the present invention, the vehicle body modular construction method comprises the following steps:

[0045] According to the intersection between the platforms of the bodies of various vehicle models, the platform of the body is divided into a front anti-collision beam 1, a cabin 2, a front plate 3, a rear plate 4 and a rear anti-collision beam 5 which are sequentially arranged along the length direction of the body, the cabin 2 is used for front overhang installation, and the rear plate 4 is used for rear overhang installation;

[0046] The front anti-collision beam 1, the engine compartment 2, the front panel 3, the panel body and the rear anti-collision beam 5 are set as common parts between various vehicle models, and the sizes of the front anti-collision beam 1, the engine compartment 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5 are determined;

[0047] A dedicated energy absorption box 6 is constructed according to the vehicle model to be assembled, and the dedicated energy absorption box 6 connects the front anti-collision beam 1 and the engine compartment 2;

[0048] A first dedicated connecting piece 7 is constructed according to the vehicle model to be assembled, one end of the front plate body 3 in the length direction is used to connect the front anti-collision beam 1, and the first dedicated connecting piece 7 is used to connect the front plate body 3 and the rear floor;

[0049] A second dedicated connecting member 8 is constructed according to the vehicle model to be assembled, and the second dedicated connecting member 8 is used to connect the rear plate 4 and the rear anti-collision beam 5;

[0050] See also Figure 4 A dedicated front window sealing assembly 9 is constructed according to the vehicle type to be assembled, and the dedicated front window sealing assembly 9 is installed on the cabin 2.

[0051] The technical solution of the present invention first constructs the front anti-collision beam 1, the engine room 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5 according to the common parts among many types of vehicle models. When assembling the required vehicle model, according to the different vehicle models to be assembled, the special energy absorption box 6, the first special connecting part 7, the second special connecting part 8 and the special front window assembly 9 corresponding to the vehicle model to be assembled are constructed, and the above parts are spliced ​​together to complete the assembly work of the vehicle model to be assembled. By setting the anti-collision beam, the engine room 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5 as common parts, the verification work of the anti-collision beam, the engine room 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5 can be reduced, the number of verifications of the parts is reduced, the verification cycle is shortened, and the time required for vehicle body development is reduced.

[0052] See also Figure 1 , Figure 2 and Figure 3 By constructing the aforementioned anti-collision beam, the engine room 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5 as universal parts, the front anti-collision beam 1, the engine room 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5 can be used in a variety of vehicle models, and in the process of separately constructing a variety of vehicle models, the front anti-collision beam 1, the engine room 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5 can be directly used, without the need to repeatedly design the front anti-collision beam 1, the engine room 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5, and the verification work of the front anti-collision beam 1, the engine room 2, the front panel 3, the rear panel 4 and the rear anti-collision beam 5 can also be reduced, effectively reducing the design and verification work in the development process of a variety of vehicle models, and shortening the time consumed in the total construction process of several vehicle models.

[0053] Common vehicle models include Sedan, SUV, MPV, which are further divided into B-type, C-type and D-type vehicles according to size differences. The length of the body of different models may be different, and the size of the powertrain of different models may be different, and the size of the wheels of different models may also be different. In order to adapt to the requirements of different models, it is necessary to consider the interference caused by the differences in different models to construct the cabin 2 and the rear panel 4 to avoid interference in different models. It is also necessary to construct the energy absorption box, the first connecting member, the second connecting member and the special front window assembly 9 according to the differences in different models to adapt to the differences in different models.

[0054] When constructing common parts such as the engine compartment 2 and the rear panel 4, it is also necessary to consider the interference existing in different vehicle models.

[0055] The powertrains of different vehicle models are not the same, and different powertrains may have size differences. An installation cavity 21 is formed at the front end of the cabin 2, and the powertrain is installed in the installation cavity 21. When constructing the cabin 2, the width of the installation cavity 21 is greater than the width of the powertrain of different vehicle models, and the length of the installation cavity 21 is greater than the length of the powertrain of different vehicle models.

[0056] By setting the installation cavity 21 larger than the power assembly, a plurality of power assemblies can be installed in the installation cavity 21 respectively, thereby ensuring that the installation cavity 21 is adaptable to a plurality of power assemblies and facilitating the installation of auxiliary accessories associated with the power assembly in the installation cavity 21.

[0057] Two front longitudinal beams 22 are constructed on the front side of the nacelle 2 so that the two front longitudinal beams 22 fix the power assembly at opposite sides of the power assembly. The length direction of the front longitudinal beams 22 is the same as the length direction of the nacelle 2. The front longitudinal beams 22 can fix the power assembly from opposite sides of the power assembly, thereby ensuring the fixing effect of the power assembly.

[0058] See also Figure 1 and Figure 5 Different models need to install different tower tops. When constructing the tower top, the first tower top 10 is constructed with the intersecting parts of the tower tops of multiple different models. The part of the tower top of the vehicle body to be assembled that does not intersect with the first tower top 10 is used as a tower top-specific external component 11, and a corresponding tower top-specific external component 11 is constructed. When installing the tower top, the tower top-specific external component 11 corresponding to the vehicle body to be assembled is installed on the first tower top 10.

[0059] By installing the tower top outer special part on the first tower top 10, a tower top corresponding to the corresponding vehicle model can be constructed. In the construction of the vehicle body, there is no need to repeatedly construct and verify the first tower top 10, which reduces the time spent on vehicle body components.

[0060] See also Figure 1 and Figure 6 In different car models, the postures of seats are different, and seats are mostly installed in different car models as universal accessories. The front plate 3 and the rear plate 4 are both provided with a first support 12 and a second support 13 for supporting the seat, and a first special extension piece 14 and a second special extension piece are constructed according to the car model to be assembled, so that the first special extension piece 14 is used to connect the first support 12 and the seat, and the second special extension piece is used to connect the second support 13 and the seat.

[0061] When the seat is installed on the front plate 3 and the rear plate 4, the first special extension piece 14 and the second special extension piece are respectively installed on the first support 12 and the second support 13, so that the seat can be fixed in a required posture; in components of different vehicle models, the posture of the seat can be adjusted to the corresponding posture by replacing the corresponding first special extension piece 14 and the second special extension piece.

[0062] In a seat, the first support 12 and the second support 13 are sequentially arranged along the front-to-back direction, two first supports 12 are sequentially arranged along the width direction of the seat, and two second supports 13 are sequentially arranged along the width direction of the seat, and the stability of the support of the seat can be ensured by supporting the four circumferential corners on the lower side of the seat. The first special expansion piece 14 is arranged one-to-one corresponding to the first support 12, and the second special expansion piece is arranged one-to-one corresponding to the second support 13, which ensures the stability of the posture of the seat.

[0063] The wheels of different models are different. When the vehicle body moves, the space swept by the outer side of the front wheel is the envelope of the front wheel, and the space swept by the transmission shaft corresponding to the front wheel is the envelope of the transmission shaft. When constructing the cabin 2, the set of envelopes of the front wheels of various models is used as the first envelope, and the set of envelopes of the transmission shafts of various models is used as the second envelope; two front longitudinal beams 22 are constructed on the front side of the cabin 2 so that the front longitudinal beams 22 avoid the first envelope and the second envelope.

[0064] The front longitudinal beam 22 is located on the upper side of the second envelope. By setting the front longitudinal beam 22 to avoid the first envelope and the second envelope, the interference caused by the front longitudinal beam 22 can also be avoided when different front wheels are installed on the cabin 2; when assembling the vehicle body, it is convenient to directly install the front wheels of the corresponding vehicle model on the cabin 2.

[0065] A set of envelopes of rear wheels of various models is used as a third envelope, a set of envelopes of shock absorbers of various models is used as a fourth envelope, a set of envelopes of rear upper tie rods of various models is used as a fifth envelope, and a set of envelopes of front upper tie rods of various models is used as a sixth envelope;

[0066] The rear plate 4 is constructed so as to avoid the third envelope, the fourth envelope, the fifth envelope and the sixth envelope.

[0067] When constructing the rear plate 4, the rear plate 4 is set to avoid the third envelope, the fourth envelope, the fifth envelope and the sixth envelope; when the selected rear wheel is installed on the rear plate 4, the interference of the rear plate 4 can be reduced, thereby ensuring the versatility of the rear plate 4.

[0068] See also Figure 1 , Figure 2 and Figure 3 , constructing a special energy absorbing box 6 according to a vehicle model to be assembled, including: determining the overall length of the vehicle body according to the vehicle model to be assembled, determining the length of the front overhang of the vehicle body according to the overall length of the vehicle body, and determining the distance between the rear end surface of the front anti-collision beam 1 and the installation surface of the special energy absorbing box 6 according to the length of the front overhang of the vehicle body; determining the length of the special energy absorbing box 6 according to the length of the front overhang, the distance from the bumper skin to the front end of the foam energy absorbing block, the thickness of the foam energy absorbing block, the thickness of the front anti-collision beam 1, and the distance from the installation surface of the special energy absorbing box 6 to the front wheel center of the vehicle body, so as to construct the special energy absorbing box 6.

[0069] After determining the vehicle type to be assembled, the length of the vehicle type to be assembled can be determined, and the length of the front overhang of the front vehicle body can be further determined. The bumper, foam energy absorbing block, anti-collision beam and energy absorbing box are installed in sequence from front to back at the front end of the cabin 2. The length of the front overhang is subtracted in sequence from the distance from the bumper skin to the front end of the foam energy absorbing block, the thickness of the foam energy absorbing block, the thickness of the front anti-collision beam 1, and the distance from the installation surface of the special energy absorbing box 6 to the front wheel center of the vehicle body, and the result is used as the length of the energy absorbing box. After obtaining the length of the energy absorbing box, the corresponding energy absorbing box can be constructed and produced.

[0070] Constructing the first special connecting component 7 according to the vehicle type to be assembled, including: determining the length of the vehicle body according to the vehicle type to be assembled, and determining the wheelbase of the vehicle body according to the length of the vehicle body; determining the length of the first special connecting component 7 according to the wheelbase of the vehicle body, the length of the front cabin, the length of the front plate body 3 and the length of the rear plate body 4, so as to construct the first special connecting component 7.

[0071] After determining the vehicle model to be assembled, the parameters of the vehicle body of the vehicle model to be assembled can be determined, and the wheelbase of the vehicle body can be further obtained, and the wheelbase of the vehicle body is the distance between the front axle and the rear axle. The cabin 2, the front panel 3 and the rear panel 4 are determined as the dimensions of the universal parts, and the distance from the front wheel center of the cabin 2 to the rear connecting surface of the cabin 2, the length of the front panel 3 and the new distance from the front connecting surface of the rear panel 4 to the rear wheel of the rear panel 4 are successively subtracted from the wheelbase, and the result is used as the length of the first special connecting member 7, thereby obtaining the length of the first special connecting member 7, and adaptively constructing and producing the first special connecting member 7.

[0072] Furthermore, the first connecting member is plate-shaped, and the width of the first connecting member is consistent with the width of the front plate body 3; one end of the first connecting member can be connected to the front plate body 3 by welding or riveting, and the other end is connected to the rear plate body 4 by welding or riveting.

[0073] Constructing the second dedicated connecting member 8 according to the vehicle type to be assembled includes: determining the overall length of the vehicle body according to the vehicle type to be assembled, and determining the length of the rear overhang of the vehicle body according to the overall length of the vehicle body; determining the length of the second dedicated connecting member 8 according to the length of the rear overhang of the vehicle body, the length from the rear wheel center of the vehicle body to the rear side of the rear plate 4, the length of the rear energy absorption box 51, the length of the rear anti-collision beam 5, and the length from the rear bumper to the rear anti-collision beam 5, so as to construct the second dedicated connecting member 8.

[0074] After determining the vehicle type to be assembled, the parameters of the body of the vehicle type to be assembled can be determined, and then the length of the rear overhang of the body, the length from the rear wheel center of the body to the rear side of the rear plate 4, the length of the rear energy absorption box 51, the length of the rear anti-collision beam 5 and the length from the rear bumper to the rear anti-collision beam 5 are subtracted in sequence, and the final result is used as the length of the second dedicated connecting member 8, and the second connecting member is constructed and produced based on this.

[0075] The second connecting member is in a plate shape, and a front connecting surface of the second connecting member is welded or riveted to the rear plate body 4 .

[0076] Before assembling the vehicle body, the front anti-collision beam 1, the engine compartment 2, the front panel body 3, the rear panel body 4, the rear anti-collision beam 5, the first tower top 10, the first support 12 and the second support 13 are constructed according to data of various assembled vehicle models, and the front anti-collision beam 1, the engine compartment 2, the front panel body 3, the rear panel body 4, the rear anti-collision beam 5, the first tower top 10, the first support 12 and the second support 13 are directly used in the construction of the above-mentioned various vehicle models.

[0077] When assembling or building one of the vehicle models, the energy absorption box, the first connecting piece, the second connecting piece, the special front window assembly 9, the tower top special external part 11, the first special extension part 14 and the second special extension part are constructed in sequence according to the vehicle model to be assembled; in the process of building the vehicle body, the design amount of the vehicle body parts is reduced, and the development time is reduced. By installing the corresponding energy absorption box, the first connecting piece, the second connecting piece, the special front window assembly 9, the tower top special external part 11, the first special extension part 14 and the second special extension part with the front anti-collision beam 1, the cabin 2, the front plate body 3, the rear plate body 4, the rear anti-collision beam 5, the first tower top 10, the first support 12 and the second support 13, the installation of the platform part of the vehicle body can be completed.

[0078] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vehicle body modular construction method, characterized in that: The following steps are involved: According to the intersection between the platforms of the bodies of various vehicle models, the platform of the body is divided into a front anti-collision beam, a cabin, a front plate body, a rear plate body and a rear anti-collision beam which are sequentially arranged along the length direction of the body, the cabin is used for front overhang installation, and the rear plate body is used for rear overhang installation; The front anti-collision beam, the engine compartment, the front panel, the panel and the rear anti-collision beam are set as common parts between various vehicle models, and the sizes of the front anti-collision beam, the engine compartment, the front panel, the rear panel and the rear anti-collision beam are determined; Constructing a special energy absorption box according to the vehicle model to be assembled, wherein the special energy absorption box connects the front anti-collision beam and the engine compartment; A first dedicated connector is constructed according to the vehicle model to be assembled, one end of the front plate body in the length direction is used to connect the front anti-collision beam, and the first dedicated connector is used to connect the front plate body and the rear floor; Constructing a second dedicated connecting piece according to the vehicle model to be assembled, wherein the second dedicated connecting piece is used to connect the rear plate body and the rear anti-collision beam; A special front window sealing assembly is constructed according to the vehicle type to be assembled, and the special front window sealing assembly is installed on the cabin.

2. The vehicle body modular construction method according to claim 1, characterized in that: Build a special energy absorption box according to the vehicle model to be assembled, including: Determine the overall length of the vehicle body according to the vehicle model to be assembled, determine the length of the front overhang of the vehicle body according to the overall length of the vehicle body, and determine the distance between the rear end surface of the front anti-collision beam and the installation surface of the dedicated energy absorption box according to the length of the front overhang of the vehicle body; The length of the special energy absorption box is determined according to the length of the front overhang, the distance from the bumper skin to the front end of the foam energy absorption block, the thickness of the foam energy absorption block, the thickness of the front anti-collision beam and the distance from the special energy absorption box installation surface to the front wheel center of the vehicle body to construct the special energy absorption box.

3. The vehicle body modular construction method according to claim 1, characterized in that: Construct the first dedicated connector according to the vehicle model to be assembled, including: Determine the length of the vehicle body according to the vehicle model to be assembled, and determine the wheelbase of the vehicle body according to the length of the vehicle body; The length of the first dedicated connecting member is determined according to the wheelbase of the vehicle body, the length of the front cabin, the length of the front plate body, and the length of the rear plate body to construct the first dedicated connecting member.

4. The vehicle body modular construction method according to claim 1, characterized in that: Construct a second dedicated connector according to the vehicle model to be assembled, including: Determine the overall length of the vehicle body according to the vehicle model to be assembled, and determine the length of the rear overhang of the vehicle body according to the overall length of the vehicle body; The length of the second dedicated connecting member is determined based on the length of the rear overhang of the vehicle body, the length from the rear wheel center of the vehicle body to the rear side of the rear plate, the length of the rear energy absorption box, the length of the rear anti-collision beam, and the length from the rear bumper to the rear anti-collision beam to construct the second dedicated connecting member.

5. The vehicle body modular construction method according to claim 1, characterized in that: An installation cavity is constructed on the front side of the engine compartment so that the width of the installation cavity is greater than the width of the powertrain of different vehicle models, and the length of the installation cavity is greater than the length of the powertrain of different vehicle models.

6. The vehicle body modular construction method according to claim 5, characterized in that: Two front longitudinal beams are constructed on the front side of the nacelle so that the two front longitudinal beams fix the power assembly at opposite sides of the power assembly.

7. The vehicle body modular construction method according to claim 1, characterized in that: The first tower top is constructed by using the intersecting parts of tower tops of multiple different vehicle models, and the part of the tower top of the vehicle body to be assembled that does not intersect with the first tower top is used as a tower top-specific external component, and a corresponding tower top-specific external component is constructed. When installing the tower top, the tower top-specific external component corresponding to the vehicle model to be assembled is installed on the first tower top.

8. The vehicle body modular construction method according to claim 1, characterized in that: The front plate and the rear plate are both provided with a first support and a second support for supporting the seat, and a first special extension piece and a second special extension piece are constructed according to the vehicle type to be assembled, so that the first special extension piece is used to connect the first support and the seat, and the second special extension piece is used to connect the second support and the seat.

9. The vehicle body modular construction method according to claim 1, characterized in that: A set of envelopes of front wheels of various vehicle models is used as a first envelope, and a set of envelopes of transmission shafts of various vehicle models is used as a second envelope; Two front longitudinal beams are constructed on the front side of the nacelle such that the front longitudinal beams avoid the first envelope and the second envelope.

10. The vehicle body modular construction method according to claim 1, characterized in that: A set of envelopes of rear wheels of various models is used as a third envelope, a set of envelopes of shock absorbers of various models is used as a fourth envelope, a set of envelopes of rear upper tie rods of various models is used as a fifth envelope, and a set of envelopes of front upper tie rods of various models is used as a sixth envelope; The rear plate is constructed so as to avoid the third envelope, the fourth envelope, the fifth envelope and the sixth envelope.

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