Side wall inner plate structure and vehicle

Abstract

The utility model discloses a side wall inner plate structure and a vehicle, the side wall inner plate structure comprises a door ring structure, the door ring structure comprises an A column upper section inner plate, a roof side rail inner plate, a B column upper section inner plate, a B column lower section inner plate, a doorsill beam and an A column lower section inner plate which are connected in sequence; the B column reinforcing plate is arranged at the joint of the B column upper section inner plate and the B column lower section inner plate; the doorsill beam reinforcing plate is arranged on the doorsill beam and extends from the two ends of the doorsill beam to be connected with the B column lower section inner plate and the A column lower section inner plate; the thickness of the A-column upper section inner plate and the thickness of the B-column upper section inner plate are larger than the thickness of the upper edge beam inner plate, the thickness of the B-column reinforcing plate, the thickness of the B-column lower section inner plate, the thickness of the threshold beam, the thickness of the threshold beam reinforcing plate and the thickness of the A-column lower section inner plate respectively. According to different use scenes and main functions, all the components are set to be different in thickness, and the light weight of the whole vehicle is achieved while the strength and the safety performance are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a side wall inner plate structure and a vehicle. Background Art

[0002] The automobile door ring is an important structural part of the side frame of the vehicle body, generally composed of the A-pillar reinforcement plate, the roof upper side beam reinforcement plate, the B-pillar reinforcement plate and the outer door sill. The side inner plate structure in the prior art is usually composed of multiple parts in the form of spot welding overlap, and the thickness of multiple parts is the same. Each part needs a certain overlap surface to be connected, and the extra overlap structure increases the weight of the whole vehicle, which is not conducive to the lightweight of the whole vehicle; at the same time, the thickness of each part is the same, which is not conducive to the lightweight of the whole vehicle. Utility Model Content

[0003] The utility model aims to at least solve the technical problems existing in the prior art that a plurality of components are spot-welded and overlapped to form a side panel inner plate structure, the components are connected, the extra overlapping structure increases the weight of the whole vehicle, and the thickness of each component is the same, which is not conducive to lightweighting of the whole vehicle.

[0004] To this end, one object of the utility model is to provide a side enclosure inner panel structure, the side enclosure inner panel structure comprising:

[0005] A door ring structure, the door ring structure comprising an A-pillar upper inner plate, an upper side beam inner plate, a B-pillar upper inner plate, a B-pillar lower inner plate, a door sill beam and an A-pillar lower inner plate connected in sequence;

[0006] A B-pillar reinforcement plate, provided at the connection between the upper inner plate of the B-pillar and the lower inner plate of the B-pillar;

[0007] A sill beam reinforcement plate is provided on the sill beam and extends from both ends of the sill beam to be connected to the lower inner plate of the B-pillar and the lower inner plate of the A-pillar respectively;

[0008] The thickness of the A-pillar upper section inner plate and the B-pillar upper section inner plate are respectively greater than the thickness of the upper side beam inner plate, the B-pillar reinforcement plate, the B-pillar lower section inner plate, the door sill beam, the door sill beam reinforcement plate and the A-pillar lower section inner plate.

[0009] In some embodiments, the thickness of the upper inner panel of the A-pillar and the upper inner panel of the B-pillar is 1.4mm-1.8mm, and the thickness of the upper side beam inner panel, the B-pillar reinforcement panel, the lower inner panel of the B-pillar, the sill beam, the sill beam reinforcement panel and the lower inner panel of the A-pillar is 1.2mm-1.4mm.

[0010] In some embodiments, a first reinforcing rib is provided on the inner plate of the upper side beam, and a longitudinal second reinforcing rib is provided on the inner plate of the upper section of the B-pillar. The first reinforcing rib is T-shaped and includes a transverse reinforcing rib and a longitudinal reinforcing rib. The longitudinal reinforcing rib is connected to the second reinforcing rib.

[0011] In some embodiments, the second reinforcing rib extends from one end of the B-pillar upper section inner panel close to the roof rail inner panel to connect with the B-pillar lower section inner panel.

[0012] In some embodiments, a third reinforcing rib is provided on the A-pillar upper section inner plate, and the third reinforcing rib extends from one end of the A-pillar upper section inner plate close to the A-pillar lower section inner plate to connect with the upper side beam inner plate.

[0013] In some embodiments, the lower inner panel of the B-pillar includes a first connecting portion extending longitudinally and a second connecting portion extending transversely, the first connecting portion is connected to the upper inner panel of the B-pillar, and the second connecting portion is connected to one end of the rocker beam;

[0014] The A-pillar lower section inner plate comprises a third connecting portion extending longitudinally and a fourth connecting portion extending transversely, wherein the third connecting portion is connected to the A-pillar upper section inner plate, and the fourth connecting portion is connected to the other end of the sill beam;

[0015] The length ratio of the second connecting portion, the door sill beam and the fourth connecting portion is 5:3:2.

[0016] In some embodiments, the door ring structure, the B-pillar reinforcement plate and the sill beam reinforcement plate are integrally formed stamping parts.

[0017] In some embodiments, the A-pillar upper inner panel, the upper side beam inner panel, the B-pillar upper inner panel, the B-pillar lower inner panel, the door sill beam and the A-pillar lower inner panel are connected by laser welding to form an integrated structure.

[0018] In some embodiments, the B-pillar reinforcement plate is connected to the B-pillar upper inner panel and the B-pillar lower inner panel by spot welding, and the sill beam, the B-pillar lower inner panel and the A-pillar lower inner panel are connected to the sill beam reinforcement plate by spot welding.

[0019] Another object of the present invention is to provide a vehicle, comprising the above-mentioned side wall inner panel structure.

[0020] The side panel inner plate structure and the vehicle provided by the embodiment of the utility model have the following beneficial effects:

[0021] (1) According to the different usage scenarios and main functions of the A-pillar upper inner panel, the B-pillar upper inner panel, the upper side beam inner panel, the B-pillar reinforcement panel, the B-pillar lower inner panel, the sill beam and the sill beam reinforcement panel, the thickness of each component is set to different levels, and the thickness of the A-pillar upper inner panel and the B-pillar upper inner panel is respectively greater than the thickness of the upper side beam inner panel, the B-pillar reinforcement panel, the B-pillar lower inner panel, the sill beam, the sill beam reinforcement panel and the A-pillar lower inner panel, so as to achieve lightweighting of the entire vehicle while ensuring strength and safety performance;

[0022] (2) The door ring structure, B-pillar reinforcement plate and sill beam reinforcement plate are integrally formed stamping parts, without the traditional spot welding overlap structure and reducing the number of welding points, thus achieving the effect of reducing the weight of the vehicle body; the B-pillar reinforcement plate and sill beam are integrally formed with the door ring structure, thus reducing the number of tooling equipment such as molds, fixtures and inspection tools, improving the integration degree of the whole vehicle, reducing the welding process and improving production efficiency;

[0023] At the same time, compared with the split-structure side inner panel assembly, the force transmission is continuous, which improves the safety and collision performance of the vehicle;

[0024] (3) The inner plate of the upper side beam is provided with a first reinforcing rib arranged in a T shape, and the inner plate of the upper section of the B-pillar is provided with a longitudinal second reinforcing rib. The longitudinal reinforcing rib of the first reinforcing rib is connected to the second reinforcing rib, which improves the structural strength while ensuring the continuity and smoothness of force transmission;

[0025] A third reinforcing rib is provided on the upper inner panel of the A-pillar, and the third reinforcing rib extends from one end of the upper inner panel of the A-pillar close to the lower inner panel of the A-pillar to connect with the upper side beam inner panel, so as to further improve the structural strength and ensure the continuity of the force transmission channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model 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 recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 is a schematic diagram of a side inner panel structure according to an embodiment of the utility model;

[0028] Figure 2 It is an exploded view of a side inner panel structure according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] 1. A-pillar upper inner plate; 2. Upper side beam inner plate; 3. B-pillar upper inner plate; 4. B-pillar lower inner plate; 41. First connection portion; 42. Second connection portion; 5. Door sill beam; 6. A-pillar lower inner plate; 61. Third connection portion; 62. Fourth connection portion; 7. B-pillar reinforcement plate; 8. Door sill beam reinforcement plate; 9. First reinforcement rib; 91. Transverse reinforcement rib; 92. Longitudinal reinforcement rib; 10. Second reinforcement rib; 11. Third reinforcement rib. DETAILED DESCRIPTION

[0031] Various aspects and features of the present invention are described herein with reference to the accompanying drawings.

[0032] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of the embodiments. Other modifications within the scope and spirit of the present utility model will occur to those skilled in the art.

[0033] The accompanying drawings, which are included in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, are used to explain the principles of the present invention.

[0034] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0035] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present invention that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0036] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0037] Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present invention. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of ways with substantially any suitable detailed structure.

[0038] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0039] The first embodiment of the utility model provides a side inner plate structure, such as Figure 1 As shown, the side inner panel structure includes:

[0040] The door ring structure includes an A-pillar upper inner plate 1, an upper side beam inner plate 2, a B-pillar upper inner plate 3, a B-pillar lower inner plate 4, a door sill beam 5 and an A-pillar lower inner plate 6 which are connected in sequence;

[0041] A B-pillar reinforcement plate 7, provided at the connection between the B-pillar upper section inner plate 3 and the B-pillar lower section inner plate 4;

[0042] The sill beam reinforcement plate 8 is provided on the sill beam 5 and extends from both ends of the sill beam 5 to be connected to the lower inner plate 4 of the B-pillar and the lower inner plate 6 of the A-pillar respectively;

[0043] The thickness of the A-pillar upper inner panel 1 and the B-pillar upper inner panel 3 are respectively greater than the thickness of the upper side beam inner panel 2, the B-pillar reinforcement panel 7, the B-pillar lower inner panel 4, the sill beam 5, the sill beam reinforcement panel 8 and the A-pillar lower inner panel 6.

[0044] The door ring structure of the side inner panel is composed of 6 parts connected in sequence. In this solution, the structure of each part is optimized, the number of parts of the door ring structure is reduced, and the integration effect of the whole vehicle is improved. A B-pillar reinforcement plate 7 is provided at the connection between the B-pillar upper inner panel 3 and the B-pillar lower inner panel 4, and a sill beam reinforcement plate 8 is provided at the connection between the sill beam 5 and the B-pillar lower inner panel 4 and the connection between the sill beam 5 and the A-pillar lower inner panel 6, which play a role in improving strength and enhancing stability.

[0045] Under the premise of meeting safety performance, in order to achieve lightweighting of the vehicle, different parts of the side inner panel can be set to different thicknesses. The upper inner panel 1 of the A-pillar is the main stress-bearing area during head-on and offset collisions, and it is necessary to ensure that it cannot be deformed or bent during a collision; the upper inner panel 3 of the B-pillar is the main stress-bearing area during a side collision, and it is necessary to ensure that it cannot be deformed or bent during a collision. The thickness of the upper inner panel 1 of the A-pillar and the upper inner panel 3 of the B-pillar is set to be greater than the thickness of other parts. By setting different parts of the side inner panel structure to different thicknesses, the weight of the entire vehicle can be reduced while ensuring strength and safety performance.

[0046] Specifically, the A-pillar upper inner panel 1, the upper side beam inner panel 2, the B-pillar upper inner panel 3, the B-pillar lower inner panel 4, the door sill beam 5 and the A-pillar lower inner panel 6 are connected by laser welding to form an integrated structure. The laser welding process is used to solve the problem of discontinuity of the force transmission channel between two adjacent parts caused by spot welding of various parts. At the same time, the various parts do not use the traditional spot welding method, and there is no need to set up a spot welding overlap structure, which reduces the welding process and greatly reduces the number of welding fixtures, inspection tools and other tooling, reducing costs and improving production efficiency. At the same time, it reduces many welding points and solves the problem of excessive weight of the vehicle body.

[0047] The B-pillar reinforcement plate 7 is connected to the B-pillar upper inner plate 3 and the B-pillar lower inner plate 4 by spot welding, and the sill beam 5, the B-pillar lower inner plate 4 and the A-pillar lower inner plate 6 are connected to the sill beam reinforcement plate 8 by spot welding. The A-pillar upper inner plate 1, the upper side beam inner plate 2, the B-pillar upper inner plate 3, the B-pillar lower inner plate 4, the sill beam 5 and the A-pillar lower inner plate 6 are connected to form a door ring structure by laser welding, and then the door ring structure plate is connected to the B-pillar reinforcement plate 7 and the sill beam reinforcement plate 8 by spot welding, and the whole is heated to 930°C and kept warm, and then the door ring structure, the B-pillar reinforcement plate 7 and the sill beam reinforcement plate 8 are stamped and quenched in the mold as a whole. The door ring structure, the B-pillar reinforcement plate 7 and the sill beam reinforcement plate 8 form an integrally formed stamping part. The traditional split structure has the problem of discontinuous force transmission, which has a great impact on the safety performance of the vehicle. In addition, due to too many welding levels and too many tooling equipment, it is easy to cause poor precision problems, and the cost investment is too high. In this embodiment, the door ring structure, the B-pillar reinforcement plate 7 and the door sill beam reinforcement plate 8 are integrally formed, which saves the use of tooling equipment such as molds, fixtures and inspection tools, and integrates multiple components into one component, reducing welding procedures, improving production efficiency and reducing costs; when subjected to force, the force is transmitted continuously, thereby improving the safety performance of the vehicle.

[0048] like Figure 1 and Figure 2 As shown, a first reinforcing rib 9 is provided on the upper side beam inner plate 2, and a longitudinal second reinforcing rib 10 is provided on the upper inner plate 3 of the B-pillar. The first reinforcing rib 9 is in a T-shape, including a transverse reinforcing rib 91 and a longitudinal reinforcing rib 92, and the longitudinal reinforcing rib 92 is connected to the second reinforcing rib 10. Since the upper inner plate 3 of the B-pillar is the main force-bearing area during top pressure, the addition of the first reinforcing rib 9 arranged in a T-shape meets the top pressure requirement. The first reinforcing rib 9 is arranged in a T-shape, which has a reinforcing effect in two directions. The transverse reinforcing rib 91 improves the transverse strength, and the longitudinal reinforcing rib 92 improves the longitudinal strength. In some embodiments, the longitudinal reinforcing rib 92 is connected to the second reinforcing rib 10 arranged on the upper inner plate 3 of the B-pillar. The longitudinal reinforcing rib 92 and the second reinforcing rib 10 are connected, which can improve the structural stability of the side inner plate structure.

[0049] The second reinforcing rib 10 extends from one end of the B-pillar upper inner panel 3 close to the upper side beam inner panel 2 to connect with the B-pillar lower inner panel 4. The second reinforcing rib 10 can be configured to be connected with the upper side beam inner panel 2 at one end and connected with the B-pillar lower inner panel 4 at the other end. The second reinforcing rib 10 passes through the B-pillar upper inner panel 3 and is connected with two adjacent components to ensure the strength of the entire side panel structure.

[0050] A third reinforcing rib 11 is provided on the A-pillar upper inner panel 1, and the third reinforcing rib 11 extends from one end of the A-pillar upper inner panel 1 close to the A-pillar lower inner panel 6 to connect with the upper side beam inner panel 2. The third reinforcing rib 11 is provided on the A-pillar upper inner panel 1 and the upper side beam inner panel 2. In some embodiments, the third reinforcing rib 11 is connected to the transverse reinforcement portion of the first reinforcing rib 9, and the third reinforcing rib 11, the transverse reinforcing rib 91, the longitudinal reinforcing rib 92 and the second reinforcing rib 10 are sequentially connected, which is beneficial to improving the strength of the door ring structure and improving the collision performance of the side inner panel structure.

[0051] The thickness of the A-pillar upper inner panel 1 and the B-pillar upper inner panel 3 is 1.4mm-1.8mm, and the thickness of the upper side beam inner panel 2, the B-pillar reinforcement panel 7, the B-pillar lower inner panel 4, the sill beam 5, the sill beam reinforcement panel 8 and the A-pillar lower inner panel 6 is 1.2mm-1.4mm.

[0052] In a specific implementation, the thickness of the A-pillar upper inner plate 1 and the B-pillar upper inner plate 3 is any one of 1.4mm, 1.5mm, 1.6mm, 1.7mm and 1.8mm, wherein the A-pillar upper inner plate 1 and the B-pillar upper inner plate 3 can be set to the same thickness or different thicknesses. The thickness of the upper side beam inner plate 2, the B-pillar reinforcement plate 7, the B-pillar lower inner plate 4, the door sill beam 5, the door sill beam reinforcement plate 8 and the A-pillar lower inner plate 6 is any one of 1.2mm, 1.3mm and 1.4mm, wherein the upper side beam inner plate 2, the B-pillar reinforcement plate 7, the B-pillar lower inner plate 4, the door sill beam 5, the door sill beam reinforcement plate 8 and the A-pillar lower inner plate 6 can be set to the same thickness or different thicknesses.

[0053] In some embodiments, the tensile strength of the inner panel structure reaches 1500MPa. Under the condition of meeting the safety performance, in order to achieve lightweight, the thickness of each component in the inner panel structure is set to different values. The A-pillar upper section inner panel 1 is the stress-bearing area during head-on and offset collisions. It is necessary to ensure that it cannot be deformed or bent during a collision. The thickness of the A-pillar upper section inner panel 1 is preferably 1.4mm to ensure strength; the upper side beam inner panel 2 is the main stress-bearing area during non-collision, and its thickness is preferably 1.2mm; the B-pillar upper section inner panel 3 is the main stress-bearing area during side collisions. It is necessary to ensure that it cannot be deformed or bent during a collision. The thickness of the B-pillar upper section inner panel 3 is preferably 1.4mm to ensure strength; the B-pillar reinforcement plate 7 ensures that the welding point between the B-pillar upper section inner panel 3 and the B-pillar lower section inner panel 4 will not tear during a collision. The thickness of the reinforcement plate 7 is preferably 1.2mm; the lower inner plate 4 of the B-pillar is the main stress-bearing area in non-collision, and for lightweight considerations, the thickness is preferably 1.2mm; the sill beam 5 is the main stress-bearing area in non-collision, and for lightweight considerations, the thickness is preferably 1.2mm; the sill beam reinforcement plate 8 is mainly to ensure that the welding points between the sill beam 5 and the lower inner plate 4 of the B-pillar and the lower inner plate 6 of the A-pillar are not torn in collision, and the thickness of the sill beam reinforcement plate 8 is preferably 1.2mm; the lower inner plate 6 of the A-pillar is the main stress-bearing area in non-collision, and for lightweight considerations, the thickness of the lower inner plate 6 of the A-pillar is preferably 1.2mm.

[0054] The B-pillar lower section inner panel 4 includes a first connecting portion 41 extending longitudinally and a second connecting portion 42 extending transversely, the first connecting portion 41 is connected to the B-pillar upper section inner panel 3, and the second connecting portion 42 is connected to one end of the door sill beam 5;

[0055] The A-pillar lower section inner panel 6 includes a third connecting portion 61 extending longitudinally and a fourth connecting portion 62 extending transversely, the third connecting portion 61 is connected to the A-pillar upper section inner panel 1, and the fourth connecting portion 62 is connected to the other end of the door sill beam 5;

[0056] In order to improve material utilization while ensuring strength, the length ratio of the second connecting portion 42 , the door sill beam 5 , and the fourth connecting portion 62 is 5:3:2.

[0057] A second embodiment of the present invention provides a vehicle, comprising the above-mentioned side wall inner panel structure.

[0058] The specific plan is to connect the A-pillar upper inner panel 1, the upper side beam inner panel 2, the B-pillar upper inner panel 3, the B-pillar lower inner panel 4, the door sill beam 5 and the A-pillar lower inner panel 6 of different thicknesses end to end through laser welding to form an annular structure plate for at least one door opening. After welding, the B-pillar reinforcement plate 7 and the door sill beam reinforcement plate 8 are welded to the previous annular structure plate, and then the annular structure plate is integrally hot stamped with the B-pillar reinforcement plate 7 and the door sill beam reinforcement plate 8 to form an integral side inner panel structure.

[0059] In order to improve material utilization, the length of each component is set as follows:

[0060] 1) The length ratio of the A-pillar upper inner panel 1 and the upper side beam inner panel 2 is 2:3;

[0061] 2) The length ratio of the B-pillar upper inner panel 3 to the B-pillar lower inner panel 4 is 11:9;

[0062] 3) The length ratio of the second connection portion 42 of the B-pillar lower section inner panel 4, the door sill beam 5 and the fourth connection portion 62 of the A-pillar lower section inner panel 6 is 5:3:2.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0065] In the description of the present invention, "plurality" means two or more.

[0066] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0067] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A side inner panel structure, characterized in that: include: A door ring structure, the door ring structure comprising an A-pillar upper inner plate, an upper side beam inner plate, a B-pillar upper inner plate, a B-pillar lower inner plate, a door sill beam and an A-pillar lower inner plate connected in sequence; A B-pillar reinforcement plate, provided at the connection between the upper inner plate of the B-pillar and the lower inner plate of the B-pillar; A sill beam reinforcement plate is provided on the sill beam and extends from both ends of the sill beam to be connected to the lower inner plate of the B-pillar and the lower inner plate of the A-pillar respectively; The thickness of the A-pillar upper section inner plate and the B-pillar upper section inner plate are respectively greater than the thickness of the upper side beam inner plate, the B-pillar reinforcement plate, the B-pillar lower section inner plate, the door sill beam, the door sill beam reinforcement plate and the A-pillar lower section inner plate.

2. A side wall inner panel structure according to claim 1, characterized in that: The thickness of the upper inner plate of the A-pillar and the upper inner plate of the B-pillar is 1.4mm-1.8mm, and the thickness of the upper side beam inner plate, the B-pillar reinforcement plate, the lower inner plate of the B-pillar, the door sill beam, the door sill beam reinforcement plate and the lower inner plate of the A-pillar is 1.2mm-1.4mm.

3. The side wall inner plate structure according to claim 2, characterized in that: A first reinforcing rib is provided on the inner plate of the upper side beam, and a longitudinal second reinforcing rib is provided on the inner plate of the upper section of the B-pillar. The first reinforcing rib is T-shaped and includes a transverse reinforcing rib and a longitudinal reinforcing rib. The longitudinal reinforcing rib is connected to the second reinforcing rib.

4. The side wall inner panel structure according to claim 3, characterized in that: The second reinforcing rib extends from one end of the B-pillar upper section inner plate close to the roof side beam inner plate to be connected to the B-pillar lower section inner plate.

5. The side wall inner plate structure according to claim 4, characterized in that: The A-pillar upper section inner plate is provided with a third reinforcing rib, and the third reinforcing rib extends from one end of the A-pillar upper section inner plate close to the A-pillar lower section inner plate to be connected with the upper side beam inner plate.

6. The side wall inner panel structure according to claim 1, characterized in that: The lower inner plate of the B-pillar includes a first connecting portion extending longitudinally and a second connecting portion extending transversely, wherein the first connecting portion is connected to the upper inner plate of the B-pillar, and the second connecting portion is connected to one end of the door sill beam; The A-pillar lower section inner plate comprises a third connecting portion extending longitudinally and a fourth connecting portion extending transversely, wherein the third connecting portion is connected to the A-pillar upper section inner plate, and the fourth connecting portion is connected to the other end of the sill beam; The length ratio of the second connecting portion, the door sill beam and the fourth connecting portion is 5:3:

2.

7. The side wall inner panel structure according to claim 1, characterized in that: The door ring structure, the B-pillar reinforcement plate and the door sill beam reinforcement plate are integrally formed stamping parts.

8. The side wall inner panel structure according to claim 7, characterized in that: The A-pillar upper section inner panel, the upper side beam inner panel, the B-pillar upper section inner panel, the B-pillar lower section inner panel, the door sill beam and the A-pillar lower section inner panel are connected by laser welding to form an integrated structure.

9. The side wall inner plate structure according to claim 7, characterized in that: The B-pillar reinforcement plate is connected to the B-pillar upper section inner plate and the B-pillar lower section inner plate by spot welding, and the sill beam, the B-pillar lower section inner plate and the A-pillar lower section inner plate are connected to the sill beam reinforcement plate by spot welding.

10. A vehicle, characterized in that: A side panel inner plate structure comprising any one of claims 1-9.

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