Integrated-piping threshold structure and vehicle

Abstract

This invention relates to a sill structure with integrated piping and a vehicle. The sill structure with integrated piping includes a sill body with a cavity configuration. A sill reinforcement beam is provided within the cavity of the sill body. Cooling pipes are located within the sill reinforcement beam, which simultaneously facilitates the flow of cooling medium and the transfer of collision energy. The outer peripheral wall of the sill reinforcement beam is connected to the inner cavity wall of the sill body via a connecting bracket. The sill reinforcement beam is a tubular component arranged along the X-direction of the vehicle to simultaneously achieve energy transfer in a frontal collision and crumple zone energy absorption in an offset collision. This invention also provides a vehicle including the sill structure with integrated piping described herein. This invention solves the problem that existing technologies cannot simultaneously balance battery safety and vehicle space layout.

Description

Technical Field

[0001] This invention relates to the field of vehicle body technology, specifically to a door sill structure with integrated piping and a vehicle. Background Technology

[0002] Currently, electric vehicles have a battery safety reinforcement beam arranged in the door sill cavity, which has a single function and does not make full use of the space in the door sill cavity. As the automotive industry focuses on high safety and lightweighting, the door sill structure with high integration and multi-functionality is an effective way to achieve high safety and integration.

[0003] Currently, high-safety electric vehicles face some technical challenges: battery safety protection requires dedicated reinforcement components on the door sill, which results in limited functionality and wasted resources.

[0004] CN214057725U discloses a vehicle sill beam, a sill beam assembly, and a vehicle. The vehicle sill beam includes a beam body and a reinforcing member. The beam body includes an inner sill plate and an outer sill plate disposed opposite each other. The outer sill plate and the inner sill plate are interlocked along the length direction to define a receiving cavity. The beam body includes a support portion and a collapsible portion arranged along the height direction. The receiving cavity includes a support cavity located in the support portion and a collapsible cavity located in the collapsible portion. The collapsible portion is used to be disposed on the outside of the battery pack, and the reinforcing member is disposed in the support cavity. The sill beam assembly includes a crossbeam, a battery pack, and a vehicle sill beam. The vehicle includes the sill beam assembly. This structure increases the structural strength of the sill beam and effectively protects the battery pack in the event of a side collision. However, this structure only solves the battery safety problem and does not solve the problem of pipeline space arrangement. Summary of the Invention

[0005] The purpose of this invention is to provide a threshold structure and vehicle with integrated pipelines to solve the problem that existing battery safety and vehicle space layout cannot be simultaneously achieved.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A sill structure with integrated piping includes a sill body in the form of a cavity. A sill reinforcing beam is provided inside the cavity of the sill body. A cooling pipe is provided inside the sill reinforcing beam. The cooling pipe is used for both the flow of cooling medium and the transfer of collision energy. The outer peripheral wall of the sill reinforcing beam is connected to the inner cavity wall of the sill body by a connecting bracket. The sill reinforcing beam is a tubular component arranged along the X direction of the vehicle to simultaneously realize the transfer of energy in a frontal collision and the crumple energy absorption in an offset collision.

[0008] Based on the aforementioned technical means, by integrating the cooling pipes into the cavity of the door sill, not only is efficient integration of the cooling pipes and the door sill structure achieved, thereby reducing the difficulty of vehicle space layout, but the strength of the door sill body is also enhanced. Furthermore, by setting the door sill reinforcing beam as a tubular component arranged along the X direction of the vehicle, the rapid energy transfer during frontal collisions and the energy absorption of the collapsing during offset collisions are improved, thereby enhancing the collision performance of the door sill structure and improving the safety performance of the battery pack. This solves the problem that existing battery safety and vehicle space layout cannot be simultaneously achieved.

[0009] Preferably, the cooling pipe is also a tubular component arranged along the X direction of the vehicle, and the cooling pipe is located inside the door sill reinforcement beam.

[0010] Tests have proven that by designing the cooling pipes as tubular components arranged along the X-direction of the vehicle, the rapid energy transfer during a frontal collision and the energy absorption during an offset collision can be further enhanced simultaneously, thereby improving energy transfer efficiency and effectively improving the strength of the sill structure and the safety of the battery pack. At the same time, placing the cooling pipes inside the sill reinforcement beam effectively improves the vehicle's NVH performance.

[0011] Preferably, the cooling pipeline includes a first cooling pipeline for the inflow of cooling medium and a second cooling pipeline for the outflow of cooling medium, wherein the first cooling pipeline and the second cooling pipeline are arranged to be intertwined.

[0012] By arranging the first and second cooling pipes in an intertwined manner to form a rope-like structure, the material yields and expands physically during the collision process through the physical structure, further increasing the collision energy absorption effect.

[0013] Preferably, the space between the threshold reinforcement beam and the cooling pipe is filled with aluminum foam.

[0014] By filling the space between the door sill reinforcement beam and the cooling pipes with aluminum foam, the strength of the door sill structure and the avoidance of abnormal noise are further improved simultaneously.

[0015] Preferably, the threshold body includes an outer threshold and an inner threshold, and a closed cavity is formed between the outer threshold and the inner threshold. The cross-section of the outer threshold and the inner threshold along the width direction is similar to a zigzag shape.

[0016] The outer threshold includes a first upper stop edge, a first lateral transition connection part, a first longitudinal connection part, a second longitudinal connection part, a third longitudinal connection part, a second lateral transition connection part, and a first lower stop edge, which are formed sequentially.

[0017] The inner sill includes a second upper stop edge, a third lateral transition connection part, a fourth longitudinal connection part, a fourth lateral transition connection part, and a second lower stop edge formed sequentially.

[0018] The first upper stop edge is connected to the second upper stop edge, and the first lower stop edge is connected to the second lower stop edge.

[0019] Preferably, the second longitudinal connecting portion is formed by recessing towards the inner threshold.

[0020] By setting the second longitudinal connecting part to be recessed in the direction of the inward threshold, the unevenness further enhances the strength of the threshold structure, and also ensures the full deformation and shaping of the surface, as well as the contour of the surface.

[0021] Preferably, the outer threshold has a first inclined portion near the front end, and a first triangular inclined portion is formed at the intersection of the first inclined portion, the first lateral transition connection portion and the first longitudinal connection portion, and a first triangular inclined portion is also formed at the intersection of the first inclined portion, the third longitudinal connection portion and the second lateral transition connection portion.

[0022] The inner sill has a second inclined portion near the front end, and a second triangular inclined portion is formed at the intersection of the second inclined portion, the fourth longitudinal connecting portion and the fourth transverse transition connecting portion.

[0023] Preferably, the connecting bracket includes an upper connecting bracket and a lower connecting bracket;

[0024] The upper connecting bracket includes a first welding part, a first support part, a first connecting part, a second support part, and a second connecting part formed sequentially; the first welding part is located between the first upper stop edge and the second upper stop edge, and is connected to both the first upper stop edge and the second upper stop edge; the first connecting part is connected to the sill reinforcing beam; the second connecting part is connected to the fourth longitudinal connecting part.

[0025] The lower connecting bracket includes a second welding part, a third support part, a third connecting part, a fourth support part, and a fourth connecting part formed sequentially. The second welding part is located between the first lower stop edge and the second lower stop edge, and is connected to both the first lower stop edge and the second lower stop edge. The third connecting part is connected to the sill reinforcing beam, and the fourth connecting part is connected to the fourth longitudinal connecting part.

[0026] The upper connecting bracket and the lower connecting bracket do not intersect.

[0027] By sequentially setting the upper connecting bracket into a welded part connected to the stop edge of the sill body and a connecting part connected to the sill reinforcing beam, not only is the closed cavity of the sill body effectively supported, but the rapid transfer of energy during the collision is also ensured.

[0028] Preferably, the sill body, sill reinforcement beam and connecting bracket are made of steel plate with a thickness of 0.6mm to 5.0mm; the cooling pipes are made of stainless steel.

[0029] The present invention also provides a vehicle with a sill structure including the integrated pipeline described in the present invention.

[0030] The beneficial effects of this invention are:

[0031] The integrated piping sill structure of this invention, by integrating the cooling pipes inside the sill cavity, not only achieves efficient integration of the cooling pipes and sill structure, thereby reducing the difficulty of vehicle space layout, but also enhances the strength of the sill body. Furthermore, by setting the sill reinforcement beam as a tubular component arranged along the X-direction of the vehicle, it simultaneously improves the rapid energy transfer during frontal collisions and the energy absorption of collapsing during offset collisions, thereby improving the collision performance of the sill structure and thus enhancing the safety performance of the battery pack. It effectively realizes the multi-functional use of a single component, providing a reliable reference for the high completeness and high integration of new energy vehicles. It has the advantages of simple structure, low cost, and meeting the requirements of vehicle lightweighting, and has promotional application value in the field of vehicle body technology. Attached Figure Description

[0032] Figure 1 This is a cross-sectional schematic diagram of the threshold structure of the integrated pipeline of the present invention (aluminum foam is not shown).

[0033] Figure 2 This is a cross-sectional schematic diagram of the threshold body;

[0034] Figure 3 This is a cross-sectional schematic diagram of the connecting bracket;

[0035] Figure 4 This is a schematic diagram of the threshold structure of the integrated pipeline of the present invention (outer threshold not shown).

[0036] Figure 5 This is a schematic diagram of the threshold structure of the integrated pipeline of the present invention (the outer threshold, threshold reinforcing beam and aluminum foam are not shown).

[0037] Figure 6 Cross-sectional view of the sill reinforcement beam, cooling pipes, and aluminum foam assembly;

[0038] Figure 7 This is a partial front view of the threshold structure of the integrated pipeline of the present invention;

[0039] Wherein, 1-sill body, 11-outer sill, 111-first upper stop edge, 112-first lateral transition connection, 113-first longitudinal connection, 114-second longitudinal connection, 115-third longitudinal connection, 116-second lateral transition connection, 117-first lower stop edge, 118-first inclined portion, 119-first triangular inclined portion, 12-inner sill, 121-second upper stop edge, 122-third lateral transition connection, 123-fourth longitudinal connection, 124-fourth lateral transition connection, 125-second lower stop edge 1. Edge, 126-Second inclined part, 127-Second triangular inclined part; 2-Sill reinforcement beam; 3-Cooling pipe, 31-First cooling pipe, 32-Second cooling pipe; 4-Connecting bracket, 41-Upper connecting bracket, 411-First welding part, 412-First support part, 413-First connecting part, 414-Second support part, 415-Second connecting part, 42-Lower connecting bracket, 421-Second welding part, 422-Third support part, 423-Third connecting part, 424-Fourth support part, 425-Fourth connecting part; 5-Foamed aluminum. Detailed Implementation

[0040] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0041] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0042] Numerous details are explored in the following description to provide a more thorough explanation of embodiments of this application; however, it will be apparent to those skilled in the art that embodiments of this application may be implemented without these specific details.

[0043] Example 1

[0044] like Figures 1 to 7As shown, an integrated pipeline sill structure includes a sill body 1 with a cavity configuration. A sill reinforcing beam 2 is provided inside the cavity of the sill body 1. A cooling pipeline 3 is provided inside the sill reinforcing beam 2. The cooling pipeline 3 is used for both the flow of cooling medium and the transfer of collision energy. The outer peripheral wall of the sill reinforcing beam 2 is connected to the inner cavity wall of the sill body 1 by a connecting bracket 4. The sill reinforcing beam 2 is a tubular component arranged along the X direction of the vehicle to simultaneously realize the transfer of energy during a frontal collision and the collapse and energy absorption during an offset collision.

[0045] By integrating the cooling pipes into the cavity of the door sill, not only is efficient integration of the cooling pipes and the door sill structure achieved, reducing the difficulty of vehicle space layout, but the strength of the door sill body is also enhanced. Furthermore, by designing the door sill reinforcement beam as a tubular component arranged along the X-direction of the vehicle, the rapid energy transfer during frontal collisions and the energy absorption of the collapsing structure during offset collisions are improved, thereby enhancing the collision performance of the door sill structure and improving the safety performance of the battery pack. This effectively realizes the multi-functional use of a single component and provides a reliability reference for the high integrity and high integration of new energy vehicles.

[0046] In order to simultaneously improve the energy transfer in frontal collisions and the energy absorption in offset collisions, so as to maximize the safety of the battery pack, the door sill reinforcement beam 2 is designed as a tubular component arranged along the X direction of the vehicle, and the cooling pipe 3 is also designed as a tubular component arranged along the X direction of the vehicle. The cooling pipe 3 is located inside the door sill reinforcement beam 2 to effectively avoid abnormal noise problems.

[0047] In this embodiment, both the threshold reinforcement beam 2 and the cooling pipe 3 have circular cross-sections. Using mechanical analysis software, force analysis was performed on the circular threshold reinforcement beam 2 and cooling pipe 3 compared to other structures (such as rectangular or polygonal structures) under a frontal collision. The analysis revealed that, during a frontal collision, the circular threshold reinforcement beam 2 and cooling pipe 3 experience relatively uniform force across the entire force-bearing surface, while the rectangular or polygonal structures experience relatively concentrated force at the corners. This results in the rectangular or polygonal structures being able to withstand less impact force during deformation compared to the circular structures, demonstrating that the circular threshold reinforcement beam 2 and cooling pipe 3 provide stronger support for the threshold structure.

[0048] The cooling pipe 3 includes a first cooling pipe 31 for the inflow of cooling medium and a second cooling pipe 32 for the outflow of cooling medium, the first cooling pipe 31 and the second cooling pipe 32 being arranged to be intertwined.

[0049] To minimize the noise problem from the cooling pipes, aluminum foam 5 was filled between the door sill reinforcement beam 2 and the cooling pipe 3. Filling with aluminum foam 5 also effectively improved the strength of the door sill structure.

[0050] The threshold body 1 includes an outer threshold 11 and an inner threshold 12, with a closed cavity formed between the outer threshold 11 and the inner threshold 12. The cross-sections of the outer threshold 11 and the inner threshold 12 along the width direction are similar to the shape of a zigzag.

[0051] The outer sill 11 includes a first upper stop edge 111, a first lateral transition connection portion 112, a first longitudinal connection portion 113, a second longitudinal connection portion 114, a third longitudinal connection portion 115, a second lateral transition connection portion 116, and a first lower stop edge 117, which are formed sequentially.

[0052] The inner sill 12 includes a second upper stop edge 121, a third lateral transition connection portion 122, a fourth longitudinal connection portion 123, a fourth lateral transition connection portion 124, and a second lower stop edge 125 formed sequentially.

[0053] The first upper stop edge 111 is connected to the second upper stop edge 121, and the first lower stop edge 117 is connected to the second lower stop edge 125.

[0054] In order to improve the strength of the sill structure, the second longitudinal connecting part 114 is recessed inward towards the sill 12, wherein the second longitudinal connecting part 114 is located at the middle of the outer sill 11 along the Z direction of the vehicle.

[0055] The outer sill 11 has a first inclined portion 118 near the front end. A first triangular inclined portion 119 is formed at the intersection of the first inclined portion 118, the first lateral transition connection portion 112 and the first longitudinal connection portion 113. A first triangular inclined portion 119 is also formed at the intersection of the first inclined portion 118, the third longitudinal connection portion 115 and the second lateral transition connection portion 116.

[0056] The inner sill 12 has a second inclined portion 126 near the front end, and a second triangular inclined portion 127 is formed at the intersection of the second inclined portion 126, the fourth longitudinal connecting portion 123 and the fourth transverse transition connecting portion 124.

[0057] The outer sill 11 is used to connect with the outer side panel of the vehicle body, and the inner sill 12 is used to connect with the floor sill.

[0058] The connecting bracket 4 includes an upper connecting bracket 41 and a lower connecting bracket 42;

[0059] The upper connecting bracket 41 includes a first welding part 411, a first support part 412, a first connecting part 413, a second support part 414, and a second connecting part 415 formed sequentially; the first welding part 411 is located between the first upper stop edge 111 and the second upper stop edge 121, and is connected to both the first upper stop edge 111 and the second upper stop edge 121; the first connecting part 413 is connected to the sill reinforcing beam 2; the second connecting part 415 is connected to the fourth longitudinal connecting part 123;

[0060] The lower connecting bracket 42 includes a second welding part 421, a third support part 422, a third connecting part 423, a fourth support part 424, and a fourth connecting part 425 formed sequentially. The second welding part 421 is located between the first lower stop edge 117 and the second lower stop edge 125, and is connected to both the first lower stop edge 117 and the second lower stop edge 125. The third connecting part 423 is connected to the sill reinforcing beam 2, and the fourth connecting part 425 is connected to the fourth longitudinal connecting part 123.

[0061] The upper connecting bracket 41 and the lower connecting bracket 42 do not intersect.

[0062] In this embodiment, since the sill reinforcement beam 2 has a circular cross-section, the first connecting portion 413 and the third connecting portion 423 are designed to follow the outer wall of the sill reinforcement beam 2, that is, the first connecting portion 413 and the third connecting portion 423 are designed as arc-shaped structures to effectively ensure the connection strength between the first connecting portion 413 and the third connecting portion 423 and the sill reinforcement beam 2. The first connecting portion 413 and the third connecting portion 423 are fixed to the sill reinforcement beam 2 by welding.

[0063] The door sill body 1, door sill reinforcing beam 2, and connecting bracket 4 are made of steel plates with a thickness of 0.6mm to 5.0mm; the cooling pipes 3 are made of stainless steel. Among them, the cooling system has high requirements for the corrosion resistance of the cooling pipes 3, therefore, the cooling pipes 3 must be made of corrosion-resistant materials.

[0064] This embodiment also provides a vehicle, including the sill structure with integrated piping as described in this embodiment.

[0065] In summary, the integrated piping sill structure of the present invention, by integrating the cooling piping inside the cavity of the sill, not only achieves efficient integration of the cooling piping and the sill structure, thereby reducing the difficulty of vehicle space layout, but also enhances the strength of the sill body, thereby improving the collision performance of the sill structure. Furthermore, by setting the sill reinforcing beam as a tubular component arranged along the X-direction of the vehicle, it simultaneously improves the rapid energy transfer during frontal collisions and the energy absorption of the collapsing during offset collisions, thereby improving the safety performance of the battery pack. It effectively realizes the multi-functional use of a single component, providing a reliable reference for the high completeness and high integration of new energy vehicles. It has the advantages of simple structure, low cost, and meeting the requirements of vehicle lightweighting.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. An integrated plumbing threshold structure, characterized by, The application relates to a door sill body (1) in a cavity configuration, wherein a door sill reinforcing beam (2) is arranged in the cavity of the door sill body (1), a cooling pipeline (3) is arranged in the door sill reinforcing beam (2), the cooling pipeline (3) is used for cooling medium flow and collision energy transmission, a connecting support (4) is arranged between the outer wall of the door sill reinforcing beam (2) and the inner wall of the door sill body (1), and the door sill reinforcing beam (2) is a tubular member arranged along the X direction of the automobile to realize energy transmission and offset collision energy absorption. The cooling pipeline (3) is a tubular member arranged along the X direction of the automobile, and the connecting support (4) is designed in the shape of the outer wall of the door sill reinforcing beam (2).

2. The integrated plumbing threshold structure of claim 1, wherein, The cooling pipeline (3) comprises a first cooling pipeline (31) for cooling medium inflow and a second cooling pipeline (32) for cooling medium outflow, and the first cooling pipeline (31) and the second cooling pipeline (32) are arranged in a mutual winding mode.

3. The integrated plumbing threshold structure of claim 1, wherein, The door sill reinforcing beam (2) and the cooling pipeline (3) are filled with foamed aluminum (5).

4. The integrated plumbing threshold structure of claim 1, wherein, The door sill body (1) comprises an outer door sill (11) and an inner door sill (12), a closed cavity is formed between the outer door sill (11) and the inner door sill (12), and the cross section of the outer door sill (11) and the inner door sill (12) along the width direction is similar to a Chinese character. The outer door sill (11) comprises a first upper stopper edge (111), a first transverse transition connecting part (112), a first longitudinal connecting part (113), a second longitudinal connecting part (114), a third longitudinal connecting part (115), a second transverse transition connecting part (116) and a first lower stopper edge (117) which are sequentially formed. The inner door sill (12) comprises a second upper stopper edge (121), a third transverse transition connecting part (122), a fourth longitudinal connecting part (123), a fourth transverse transition connecting part (124) and a second lower stopper edge (125) which are sequentially formed. The first upper stopper edge (111) is connected with the second upper stopper edge (121), and the first lower stopper edge (117) is connected with the second lower stopper edge (125).

5. The integrated plumbing threshold structure of claim 4, wherein, The second longitudinal connecting part (114) is recessed towards the inner door sill (12).

6. The integrated plumbing threshold structure of claim 4, wherein, The outer door sill (11) is provided with a first inclined part (118) near the front end, a first triangular inclined surface part (119) is formed at the intersection of the first inclined part (118), the first transverse transition connecting part (112) and the first longitudinal connecting part (113), and a first triangular inclined surface part (119) is also formed at the intersection of the first inclined part (118), the third longitudinal connecting part (115) and the second transverse transition connecting part (116). The inner door sill (12) is provided with a second inclined part (126) near the front end, and a second triangular inclined surface part (127) is formed at the intersection of the second inclined part (126), the fourth longitudinal connecting part (123) and the fourth transverse transition connecting part (124).

7. The integrated plumbing threshold structure of claim 4, wherein, The connecting support (4) comprises an upper connecting support (41) and a lower connecting support (42). The upper connecting bracket (41) comprises a first welding portion (411), a first supporting portion (412), a first connecting portion (413), a second supporting portion (414) and a second connecting portion (415) formed in sequence; the first welding portion (411) is located between the first upper stop edge (111) and the second upper stop edge (121) and connected with both the first upper stop edge (111) and the second upper stop edge (121); the first connecting portion (413) is connected with the rocker reinforcement (2); the second connecting portion (415) is connected with the fourth longitudinal connecting portion (123); The lower connecting bracket (42) comprises a second welding portion (421), a third supporting portion (422), a third connecting portion (423), a fourth supporting portion (424) and a fourth connecting portion (425) formed in sequence; the second welding portion (421) is located between the first lower stop edge (117) and the second lower stop edge (125) and connected with both the first lower stop edge (117) and the second lower stop edge (125); the third connecting portion (423) is connected with the rocker reinforcement (2); the fourth connecting portion (425) is connected with the fourth longitudinal connecting portion (123); The upper connecting bracket (41) and the lower connecting bracket (42) do not intersect.

8. The integrated plumbing threshold structure of claim 1, wherein, The rocker body (1), the rocker reinforcement (2) and the connecting bracket (4) are made of a steel plate with a thickness of 0.6mm-5.0mm; the cooling pipeline (3) is made of stainless steel.

9. A vehicle characterized by comprising: The rocker structure comprising the integrated pipeline according to any one of claims 1-8.

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