Vehicle stamped energy-absorbing side structure

Abstract

The vehicle energy-absorbing side structure comprises a first stamped panel having a series of first ridges, each extending substantially perpendicular to the longitudinal axis of the first stamped panel; and a second stamped panel assembled to the first stamped panel to form a sealed space substantially extending along the entire length of the longitudinal axis, wherein the energy-absorbing side structure is configured for attachment to a vehicle backup structure.

Description

Technical Field

[0001] This book relates to a stamped energy absorption side structure for vehicles.

Background Art

[0002] Modern vehicle design is influenced by the increasing emphasis on vehicle collision safety that characterizes today's automotive manufacturing industry. Several different energy absorption mechanisms have been used for protecting against side collisions of vehicles. With the advent of electric vehicles, protecting the battery pack located under the vehicle body has also become an important goal. Some previous approaches in vehicle side collision protection have been based on extruded materials such as aluminum. However, extrusion provides rails with a certain profile that cannot adjust impact protection or be adapted to specific designs of the vehicle body.

Summary of the Invention

[0003] In a first aspect, a vehicle energy absorption side structure includes a first stamped panel having a series of first ridges each extending substantially perpendicular to the longitudinal axis of the first stamped panel, and a second stamped panel assembled to the first stamped panel to form a sealed space extending substantially along the entire length of the longitudinal axis, and the energy absorption side structure is configured for attachment to a backup structure of the vehicle.

[0004] The implementation configuration may include any or all of the following features: Each of the first and second stamped panels comprises a hot-stamped aluminum alloy. The hot-stamped aluminum alloy comprises approximately 0.40–1.00% Mn, approximately 0.0–0.50% Fe, approximately 0.60–1.20% Mg, approximately 0.70–1.30% Si, approximately 0.0–0.10% Cu, approximately 0.0–0.20% Zn, approximately 0.0–0.10% Ti, approximately 0.0–0.25% Cr, approximately 0.0–0.15% residue, and a balance of aluminum. Each of the series of first ridges is configured to fracture axially along the longitudinal axis of each first ridge. The backup structure has a first backup structure for the first stamped panel and a second backup structure for the second stamped panel, the first backup structure being different from the second backup structure. The backup structure further includes a sill extrusion, each of the first and second stamped panels is configured for attachment to the sill extrusion, and the sill extrusion is configured for attachment to the first and second backup structures. The first stamped panel has a flange that abuts against the backup structure. The second backup structure has a flange that abuts against the backup structure. The energy-absorbing side structure has a front end and a rear end relating to the vehicle, and the enclosed space is higher at the rear end than at the front end. At least a first group of a series of first ridges has different heights from each other. The first group of a series of first ridges is positioned forward of the vehicle's center of gravity, and the height of the first group of a series of first ridges increases toward the center of gravity. The first group of a series of first ridges is aligned with the front door opening of the vehicle. The second group of a series of first ridges is aligned with the rear door opening of the vehicle. Each of the series of first ridges is wedge-shaped, and the slope of the second group of the series of first ridges is steeper than that of the first group of the series of first ridges. The first group of the series of first ridges is separated from each other by intermediate height regions, each of which is higher than the lowest height portion of the first stamped panel. The lowest height portion is aligned with the B-pillar of the vehicle.The second stamped panel has a series of second ridges, each extending substantially perpendicular to the longitudinal axis of the second stamped panel. Each of the series of second ridges has a different shape from the series of first ridges. The first stamped panel has a flange that is substantially parallel to the backup structure and extends along the outer side substantially along the entire length of the first stamped panel, with each of the first ridges terminating in front of the flange. The energy-absorbing side structure further comprises an intermediate stamped panel positioned between the first and second stamped panels in a sealed space. The intermediate stamped panel has a series of second ridges, each extending substantially perpendicular to the longitudinal axis of the intermediate stamped panel. The second ridges are substantially identical to at least some of the first ridges. The intermediate stamped panel is positioned such that one of the first ridges is positioned directly between two of the second ridges. The first stamped panel further has a wedge-shaped ridge at the front end of the first stamped panel relating to the vehicle, the wedge-shaped ridge extending substantially parallel to the longitudinal axis of the first stamped panel, and the wedge-shaped ridge includes a narrower end adjacent to the front end and a wider end distal to the front end.

[0005] In a second embodiment, the vehicle comprises a body providing a backup structure, and an energy-absorbing side structure having a first stamped panel including a series of first ridges, each extending substantially perpendicular to the longitudinal axis of a first stamped panel, and a second stamped panel assembled to the first stamped panel forming a sealed space substantially extending along the entire length of the longitudinal axis, the backup structure supporting the energy-absorbing side structure.

[0006] The implementation may include any or all of the following features: The vehicle further comprises a sill extrusion section, each of the first and second stamped panels being configured for attachment to the sill extrusion section, and the sill extrusion section being configured for attachment to a backup structure. The backup structure has a first backup structure for the first stamped panel and a second backup structure for the second stamped panel, the first backup structure being different from the second backup structure. The first backup structure has the vehicle's floor structure. The second backup structure has the vehicle's battery pack. [Brief explanation of the drawing]

[0007] [Figure 1] This figure shows an example of a vehicle energy-absorbing side structure, including a stamp-type panel.

[0008] [Figure 2] This figure shows one example of a stamped panel for the energy-absorbing side structure shown in Figure 1. [Figure 3] This figure shows one example of a stamped panel for the energy-absorbing side structure shown in Figure 1.

[0009] [Figure 4] This figure partially shows an example of a vehicle body with an energy-absorbing side structure, as shown in Figure 1.

[0010] [Figure 5] This figure shows an exemplary cross-sectional view of the energy-absorbing side structure shown in Figure 1.

[0011] [Figure 6] An example of an intermediate stamp-type panel is shown.

[0012] [Figure 7] This figure shows a partial cross-sectional view of an example of an intermediate stamped panel, as shown in Figure 6, which is positioned between the stamped panels of the energy-absorbing side structure shown in Figure 1.

[0013] [Figure 8] Figure 5 shows a partial view illustrating an example of attaching the energy-absorbing side structure of Figure 1 to the threshold extrusion section and intermediate floor extrusion section.

[0014] Similar reference numerals in various drawings indicate the same elements. [Modes for carrying out the invention]

[0015] This paper describes examples of systems and techniques for providing improved vehicle energy-absorbing side structures. In some implementations, energy-absorbing side structures can be fabricated using hot-stamped aluminum panels. For example, this can provide side impact protection while improving the use of packaging volume and reducing the mass of the vehicle body. Using this disclosure, the stiffness of the energy-absorbing side structure can be adjusted at one or more points. For example, the stiffness can be adjusted relative to the vehicle's backup structure supporting the energy-absorbing side structure and / or relative to the vehicle's center of gravity.

[0016] The examples herein refer to vehicles. A vehicle is a machine that transports passengers, cargo, or both. A vehicle may have one or more motors that use at least one type of fuel or other energy source (e.g., electricity). Examples of vehicles include, but are not limited to, cars, trucks, and buses. The number of wheels may vary among the types of vehicles, and one or more (e.g., all) wheels may be used for propulsion of the vehicle, or the vehicle may be de-powered (e.g., if a trailer is attached to another vehicle). A vehicle may include a passenger compartment that accommodates one or more people.

[0017] The examples described herein refer to the top, bottom, front, side, or rear. These and similar expressions specify things or aspects relatively based on obvious or arbitrary concepts of perspective. That is, these terms are illustrative and not necessarily indicate the only possible location, direction, etc.

[0018] Figure 1 shows an example of an energy-absorbing side structure 100 for a vehicle, including a stamped panel. The energy-absorbing side structure 100 may be used in conjunction with one or more other examples described elsewhere in this specification. The energy-absorbing side structure 100 includes stamped panels 102 and 104. Stamped panel 104 is assembled to stamped panel 102 to form a sealed space.

[0019] The energy-absorbing side structure 100 has a longitudinal axis extending between a front end 106 and a rear end 108. The energy-absorbing side structure 100 may be configured to be mounted on the side of a vehicle so that the front end 106 is closer to the front of the vehicle and the rear end 108 is closer to the rear of the vehicle. For example, the energy-absorbing side structure 100 may be designed to be mounted on the left side of the vehicle, and a corresponding energy-absorbing side structure having a corresponding shape may be designed to be mounted on the right side of the vehicle.

[0020] Each of the stamped panels 102 and 104 can be manufactured by applying a hot stamping process to a stock material. In some configurations, the hot stamping process may include a higher temperature stage, which takes place for about 10–14 minutes in which the panel is formed (stamped), and a pre-aging stage, which takes place for at least about 70–80 minutes. The higher temperature stage may include about 2–6 minutes at the highest temperature (e.g., about 540–550 degrees Celsius), and a die-quenching stage from the highest temperature, which is shorter than the time at the highest temperature. The pre-aging stage may optionally begin with a stage of natural aging without heat for less than about 10 minutes. The pre-aging process may include a lower temperature stage of about 70–80 minutes. For example, the lower temperature stage may include heating the panel to about 200–210 degrees Celsius for about 40–50 minutes. The pre-aging stage may optionally end with another stage of natural aging without heat. After the higher temperature stage and pre-aging stage, the panels can be subjected to the assembly and painting bake cycle.

[0021] A plurality of different materials, including but not limited to aluminum alloys, can be used. The selection of materials and / or the particularity of hot stamping can affect material properties such as strength, elongation, and / or ductility. In some implementation forms, the stamped panel can be manufactured using 6xxx series aluminum alloys. For example, the aluminum alloy can include about 0.40 - 1.00% manganese (Mn), about 0.0 - 0.50% iron (Fe), about 0.60 - 1.20% magnesium (Mg), about 0.70 - 1.30% silicon (Si), about 0.0 - 0.10% copper (Cu), about 0.0 - 0.20% zinc (Zn), about 0.0 - 0.10% titanium (Ti), about 0.0 - 0.25% chromium (Cr), about 0.0 - 0.15% residue, and the balance of aluminum.

[0022] The stamped panel 102 has a series 110 of ridges 110-1, 110-2,..., 110-n, where n = 2, 3,.... The ridges 110-1, 110-2,..., 110-n are formed by stamping. Each of the ridges 110-1, 110-2,..., 110-n extends substantially perpendicular to the longitudinal axis of the stamped panel 102. Therefore, each of the ridges 110-1, 110-2,..., 110-n can be configured to axially crush along the direction 112. For example, the direction 112 corresponds to one longitudinal axis of each of the ridges 110-1, 110-2,..., 110-n. Such a geometric shape of the structural design can provide improved energy absorption characteristics to the energy absorption side structure 100.

[0023] Series 110 may include one or more groups of ridges 110-1, 110-2, ..., 110-n. Here, series 110 has a group 110A that includes ridges 110-1, 110-2, ..., 110-i, and a group 110B that includes ridges 110-j, ..., 110-n. The ridges 110-1, 110-2, …, 110-i in group 110A may have different heights from each other. The height 114 may be defined between the upper portion of the ridge and the intermediate height region 116 that extends between each pair of ridges 110-1, 110-2, ..., 110-i. That is, the ridges 110-1, 110-2, ..., 110-i may be separated from each other by the intermediate height region 116. The height 114 of each individual ridge may increase and / or decrease along series 110.

[0024] One or more of the ridges 110-1, 110-2, ..., 110-n may have an inclination along its longitudinal axis. For example, the ridge may be wedge-shaped. The inclination in at least one of the ridges 110-1, 110-2, ..., 110-n may be different from another ridge. In some implementations, the ridges in group 110B may have a different inclination along their respective longitudinal axes than the ridges in group 110A. For example, group 110B may have a steeper inclination than the ridges in group 110A.

[0025] The stamp panel 102 may have at least one lowest height portion 118 whose height is lower than each of the ridges 110-1, 110-2, ..., 110-n and lower than the intermediate height region 116. For example, the lowest height portion 118 may be disposed between groups 110A and 110B.

[0026] The stamped panel 102 may have a wedge-shaped ridge 120 at its front end 106. The wedge-shaped ridge 120 may be formed by stamping. The wedge-shaped ridge 120 may extend substantially parallel to the longitudinal axis of the stamped panel 102. The wedge-shaped ridge 120 may have a narrower end 120a close to the front end 106 and a wider end 120b distal to the front end 106. For example, the wedge-shaped ridge 120 may offer advantages in the case of small overlap collisions involving vehicles.

[0027] The stamped panel 102 may include one or more flanges 122 substantially parallel to the backup structure expected to receive load from the energy-absorbing side structure 100. For example, the flanges 122 are located on the innermost side of the stamped panel 102, substantially parallel to the individual longitudinal axes of the ridges 110-1, 110-2, ..., 110-n. The stamped panel 102 may include one or more gaps 124 between any two flanges 122. The gaps 124 may represent a break in the continuous surface that would otherwise be formed by the flanges 122. For example, the gaps 124 may facilitate mounting operations when fixing the energy-absorbing side structure 100 to the vehicle or other mounting operations.

[0028] The energy-absorbing side structure 100 may have a flange 126 that is substantially parallel to the backup structure and extends substantially along the entire length of the stamped panel 102 on the outer side surface. The flange 126 may be formed by at least one of the stamped panels 102 or 104. Each of the ridges 110-1, 110-2, ..., 110-n may terminate in front of the flange 126. For example, the flange 126 may provide an advantage in the case of a side collision between an object such as a vehicle and a pole.

[0029] The energy-absorbing side structure 100 may have a complex shape along its longitudinal axis. In some implementations, the energy-absorbing side structure 100 may have a twisted shape. For example, in this view, the stamped panel 104 can be made relatively thinner at the front end 106 than at the rear end 108.

[0030] The above example shows that an energy-absorbing side structure (e.g., energy-absorbing side structure 100) may include a first stamped panel (e.g., stamped panel 102) having a series (e.g., series 110) including first ridges (e.g., ridges 110-1, 110-2, ..., 110-n), each extending substantially perpendicular to the longitudinal axis of the first stamped panel. The energy-absorbing side structure may include a second stamped panel (e.g., stamped panel 104) assembled to the first stamped panel to form a sealed space substantially extending along the entire length of the longitudinal axis. The energy-absorbing side structure may be configured for attachment to a vehicle backup structure.

[0031] Figures 2-3 show examples of stamped panels 104 of the energy-absorbing side structure 100 of Figure 1. The stamped panels 104 may be used in conjunction with one or more other examples described elsewhere in this specification. Figure 2 shows a side view of the stamped panel 104, and Figure 3 shows an internal perspective view of the stamped panel 104.

[0032] The stamped panel 104 has a series of ridges 200, 202-1, 202-2, ..., 202-m, where m = 2, 3, .... The ridges 202-1, 202-2, ..., 202-m are formed by stamping. Each of the ridges 202-1, 202-2, ..., 202-m extends substantially perpendicular to the longitudinal axis of the stamped panel 102. Thus, each of the ridges 202-1, 202-2, ..., 202-m may be configured to fracture axially along direction 204. For example, direction 204 corresponds to one longitudinal axis of each of the ridges 202-1, 202-2, ..., 202-m. The geometric shape of such a structural design may provide improved energy absorption properties to the energy-absorbing side structure 100. Each of the ridges 202-1, 202-2, ..., 202-m may have a different shape from the ridges 110-1, 110-2, ..., 110-n of the stamped panel 102 in Figure 1. The shape of the stamped panel 104 can facilitate the twisted shape of the energy-absorbing side structure 100, for example, as shown in Figure 1.

[0033] Figure 4 partially shows an example of a vehicle body 400 having the energy-absorbing side structure 100 of Figure 1. The vehicle body 400 may be used in conjunction with one or more other examples described elsewhere in this specification. The vehicle body 400 may provide one or more backup structures for the energy-absorbing side structure 100. The vehicle body 400 may include A-pillars 402 and B-pillars 404. The floor 406 is formed inside the vehicle body 400. For brevity, only a portion of the vehicle body 400 is shown. The vehicle body 400 forms door openings 408 (for example, facing the first row of seats) and door openings 410 (for example, facing the second row of seats). Each of the door openings 408-410 is defined by the material of the vehicle body 400. For example, such material may include a relatively large (stamped) panel sometimes referred to as a door ring inner. In some implementations, the hot stamping process used for the stamped panels 102 and 104 of the energy-absorbing side structure 100 (e.g., Figure 1) may also be used for door ring inner and / or other components such as the B-pillar stiffener 412. For example, the B-pillar stiffener 412 may serve to reinforce the B-pillar 404 (e.g., to facilitate the mounting of one or more hinges for the rear door that close the door opening 410).

[0034] The energy-absorbing side structure 100 can generally be positioned toward the outer edge of the vehicle body 400 between the wheel wells 414 (e.g., for the front wheels) and 416 (e.g., for the rear wheels). For example, group 110A of the raised section 110A (Figure 1) may be aligned with the door opening 408, and group 110B of the raised section 110B (Figure 1) may be aligned with the door opening 410. The vehicle may have a center of gravity 418. In some implementations, group 110A may be positioned forward of the center of gravity 418. For example, the height of group 110A of the raised section 110A (e.g., height 114 in Figure 1) may increase toward the center of gravity 418. The lowest height section 118 may be aligned with the B-pillar 404.

[0035] The above example shows that the vehicle may include a body (e.g., body 400) that provides a backup structure, and an energy-absorbing side structure (e.g., energy-absorbing side structure 100). The energy-absorbing side structure may include stamped panels 102 and 104 (Figure 1).

[0036] Figure 5 shows an exemplary cross-sectional view of the energy-absorbing side structure 100 of Figure 1. The energy-absorbing side structure 100 includes stamped panels 102 and 104 assembled together to form a sealed space 500. The sealed space 500 within the energy-absorbing side structure 100 can be substantially isolated from the outside. For example, the energy-absorbing side structure 100 may have one or more openings, thereby keeping the sealed space 500 far from the outside. Briefly referring again to Figure 1, the sealed space 500 may have a greater height at the rear end 108 than at the front end 106. An intermediate stamped panel 502 may be positioned between the stamped panels 102-104 in the sealed space 500. The vehicle may have a door ring inner 504. For example, the door ring inner 504 may be either a stamped panel defining a door opening 408 or 410 (Figure 4).

[0037] The vehicle may provide a backup structure for the energy-absorbing side structure 100. The backup structure may extend substantially along the entire length of the energy-absorbing side structure 100. The backup structure may include one or more components. In some implementations, the backup structure includes a sill extrusion 506. Either or both of the stamped panels 102 or 104 may be configured for attachment to the sill extrusion 506. The sill extrusion 506 may be configured for attachment to one or more other embodiments of the backup structure. In some implementations, the backup structure comprises a first backup structure for the stamped panel 102 and a second backup structure for the stamped panel 104. For example, the first backup structure may include an intermediate floor extrusion 508, which can be one of the main rails of the central underbody of the vehicle. In another example, the second backup structure may include a battery pack 510. Here, the battery pack 510 is shown schematicly and may include one or more types of storage for electrical energy (including, but not limited to, electrochemical cells). The stamped panel 102 may include a flange 512 that abuts against a backup structure (e.g., a sill extrusion 506). The stamped panel 104 may include a flange 514 that abuts against a backup structure (e.g., a sill extrusion 506). Thus, the vehicle may provide stamped panels 102 and 104 with at least partially different backup structures (e.g., an intermediate floor extrusion 508 versus the battery pack 510), respectively. At location 516, the figure illustrates that a four-layer structure may be formed from the intermediate floor extrusion 508, the doorring inner 504, the sill extrusion 506, and the stamped panel 102, respectively. The gap 124 (Figure 1) may facilitate fastening or mounting (e.g., by riveting) across fewer layers than all of them at location 516.

[0038] Figure 6 shows an example of an intermediate stamped panel 600. The intermediate stamped panel 600 may be used in conjunction with one or more other examples described elsewhere in this specification. The intermediate stamped panel 600 may be positioned between stamped panels 102-104 in a sealed space 500. For example, the intermediate stamped panel 600 may function as the intermediate stamped panel 502 in Figure 5. The intermediate stamped panel 600 may be formed by the same process as stamped panels 102 or 104, or by a different process (e.g., a different stamping or hot stamping process).

[0039] The intermediate stamped panel 600 may have a series of ridges 602-1, 602-2, ..., 602-p, where p = 2, 3, ... Each of the ridges 602-1, 602-2, ..., 602-p may extend substantially perpendicular to the longitudinal axis of the intermediate stamped panel 600. The ridges 602-1, 602-2, ..., 602-p may be substantially identical to at least a portion of the ridges 110-1, 110-2, ..., 110-n.

[0040] Figure 7 shows a partial cross-sectional view of an example of an intermediate stamped panel 600 of Figure 6, positioned between stamped panels 102 and 104 of the energy-absorbing side structure 100 of Figure 1. Here, the intermediate stamped panel 600 has, in particular, raised ridges 602-i and 602-j. The raised ridge 110-k of stamped panel 102 may be positioned directly between raised ridges 602-i and 602-j.

[0041] Figure 8 shows a partial view of an example of the energy-absorbing side structure 100 of Figure 1, attached to the sill extrusion 506, doorring inner 504, and intermediate floor extrusion 508 of Figure 5. At location 800, the gap 802 in the flange of the stamped panel 102 is provided with a reduced-thickness material stack (e.g., 3 layers instead of 4).

[0042] The terms “substantially” and “about” as used throughout this specification are used to describe and account for small variations, such as those resulting from processing variability. For example, they may refer to less than or equal to ±5%, for example less than or equal to ±2%, for example less than or equal to ±1%, for example less than or equal to ±0.5%, for example less than or equal to ±0.2%, for example less than or equal to ±0.1%, for example less than or equal to ±0.05%. Also, as used herein, indefinite articles such as “a” or “an” mean “at least one.”

[0043] It should be understood that all combinations of the aforementioned concepts and any additional concepts discussed in more detail below are intended to be part of the subject matter of the invention disclosed herein (provided that such concepts are not mutually contradictory). In particular, all combinations of the claimed subject matter appearing at the end of this disclosure are intended to be part of the subject matter of the invention disclosed herein.

[0044] Several implementations have been described. Nevertheless, it should be understood that various modifications may be made without deviating from the intent and scope of this specification.

[0045] Furthermore, the logical flow shown in the diagram does not require a specific or sequential order to achieve the desired result. In addition, other processing may be provided, or processing may be excluded from the described flow, and other components may be added to or removed from the described system. Therefore, other implementations fall within the scope of the following claims.

[0046] While specific features of the described implementations have been shown as described herein, many modifications, substitutions, changes, and equivalents will now be conceivable to those skilled in the art. Therefore, it should be understood that the appended claims are intended to encompass all such modifications and changes that fall within the scope of the implementations. They are presented merely as examples and not as limitations, and various changes in form and detail may be made. Any part of the apparatus and / or method described herein may be combined in any combination, except for mutually exclusive combinations. The implementations described herein may include various combinations and / or partial combinations of the functions, components, and / or features of the different implementations described herein.

Claims

1. A vehicle energy-absorbing side structure, wherein the energy-absorbing side structure is A first stamping panel having a series of first ridges, each extending substantially perpendicular to the longitudinal axis of the first stamping panel; and A second stamp-type panel, assembled to the first stamp-type panel, to form a sealed space substantially extending along the entire length of the longitudinal axis; Equipped with, The energy-absorbing side structure is configured for attachment to the vehicle's backup structure. Energy-absorbing side structure.

2. The energy-absorbing side structure according to claim 1, wherein each of the first stamped panel and the second stamped panel comprises a hot-stamped aluminum alloy.

3. The hot-stamped aluminum alloy is Approximately 0.40-1.00% Mn, Approximately 0.0-0.50% Fe, Approximately 0.60-1.20% Mg, Approximately 0.70-1.30% Si, Approximately 0.0-0.10% Cu, Approximately 0.0-0.20% Zn, Approximately 0.0-0.10% Ti, Approximately 0.0-0.25% Cr, Approximately 0.0-0.15% residue, and Aluminum balance The energy-absorbing side structure according to claim 2, including the above.

4. The energy-absorbing side structure according to claim 1, wherein each of the series of first ridges is configured to fracture axially along the longitudinal axis of each of the first ridges.

5. The energy absorbing side structure according to claim 1, wherein the backup structure includes a first backup structure for the first stamp-type panel and a second backup structure for the second stamp-type panel, the first backup structure being different from the second backup structure.

6. The energy absorbing side structure according to claim 5, wherein the backup structure further includes a threshold extrusion portion, each of the first stamp-type panel and the second stamp-type panel is configured for attachment to the threshold extrusion portion, and the threshold extrusion portion is configured for attachment to the first backup structure and the second backup structure.

7. The energy-absorbing side structure according to claim 1, wherein the first stamp-type panel includes a flange that abuts against the backup structure.

8. The energy absorbing side structure according to claim 5, wherein the second backup structure includes a flange that abuts against the backup structure.

9. The energy-absorbing side structure according to claim 1, wherein the energy-absorbing side structure has a front end and a rear end relating to the vehicle, and the sealed space has a height at the rear end that is higher than the height at the front end.

10. The energy-absorbing side structure according to claim 1, wherein at least a first group of the series of first protrusions have different heights from one another.

11. The energy-absorbing side structure according to claim 10, wherein the first group of the series of first protrusions is positioned forward of the center of gravity of the vehicle, and the height of the first group of the series of first protrusions increases toward the center of gravity.

12. The energy-absorbing side structure according to claim 11, wherein the first group of the series of first protrusions is aligned with the front door opening of the vehicle.

13. The energy-absorbing side structure according to claim 11, wherein the second group of the series of first protrusions is aligned with the rear door opening of the vehicle.

14. The energy-absorbing side structure according to claim 13, wherein each of the series of first ridges is wedge-shaped, and the second group of the series of first ridges has a steeper slope than the first group of the series of first ridges.

15. The energy-absorbing side structure according to claim 10, wherein the first group of the series of first ridges is separated from each other by intermediate height regions, each of which is higher than the lowest height portion of the first stamped panel.

16. The energy-absorbing side structure according to claim 15, wherein the lowest height portion is aligned with the B-pillar of the vehicle.

17. The energy-absorbing side structure according to claim 1, wherein the second stamped panel has a series of second ridges, each extending substantially perpendicular to the longitudinal axis of the second stamped panel.

18. The energy-absorbing side structure according to claim 17, wherein each of the series of second ridges has a different shape from the series of first ridges.

19. The energy-absorbing side structure according to claim 1, wherein the first stamped panel is substantially parallel to the backup structure and has a flange that extends substantially to the outer side along the entire length of the first stamped panel, and each of the first ridges terminates in front of the flange.

20. The energy absorbing side structure according to claim 1, further comprising an intermediate stamped panel disposed between the first stamped panel and the second stamped panel in the sealed space.

21. The energy-absorbing side structure according to claim 20, wherein the intermediate stamped panel has a series of second ridges, each extending substantially perpendicular to the longitudinal axis of the intermediate stamped panel.

22. The energy-absorbing side structure according to claim 21, wherein the second ridge is substantially identical to at least some of the first ridges.

23. The energy-absorbing side structure according to claim 22, wherein the intermediate stamped panel is arranged such that one of the first ridges is directly positioned between the two of the second ridges.

24. The energy-absorbing side structure according to claim 1, wherein the first stamped panel further has a wedge-shaped ridge at the front end of the first stamped panel relating to the vehicle, the wedge-shaped ridge extending substantially parallel to the longitudinal axis of the first stamped panel, and the wedge-shaped ridge includes a narrower end adjacent to the front end and a wider end distal to the front end.

25. A vehicle body that provides a backup structure; and A first stamping panel comprising a series of first ridges, each extending substantially perpendicular to the longitudinal axis of the first stamping panel; and A second stamp-type panel attached to the first stamp-type panel to form a sealed space substantially extending along the entire length of the longitudinal axis; Energy-absorbing side structure having Equipped with, The backup structure supports the energy-absorbing side structure. vehicle.

26. The vehicle according to claim 25, further comprising a sill extrusion section, wherein each of the first stamp-type panel and the second stamp-type panel is configured for attachment to the sill extrusion section, and the sill extrusion section is configured for attachment to the backup structure.

27. The vehicle according to claim 25, wherein the backup structure comprises a first backup structure for the first stamp-type panel and a second backup structure for the second stamp-type panel, the first backup structure being different from the second backup structure.

28. The vehicle according to claim 27, wherein the first backup structure has the floor structure of the vehicle.

29. The vehicle according to claim 28, wherein the second backup structure has the vehicle's battery pack.

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