Energy dissipation system for vehicle crash impact

Abstract

The present invention discloses an energy dissipation system for vehicle collision impact. An energy dissipation system for a vehicle frame includes a frame longitudinal beam, the frame longitudinal beam includes an extrudable deformation area and an incompressible deformation area. An energy dissipation device includes an energy transfer portion, the energy transfer portion is partially arranged in the extrudable deformation area and partially arranged in the incompressible deformation area, and is configured to move in response to a vehicle impact on the frame longitudinal beam. The energy dissipation portion is arranged in the incompressible deformation area and connected to the energy transfer portion. The energy dissipation device includes a first area connecting the energy dissipation portion to the incompressible deformation area, and a second area connecting the energy dissipation portion to the energy transfer portion. The first area of ​​the energy dissipation portion is stiffer than the second area of ​​the energy dissipation portion.

Description

Technical Field

[0001] The present disclosure relates to an energy dissipation system including an energy dissipation device coupled to a vehicle frame member to assist in absorbing the energy of a collision impact. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the context of the present disclosure. To the extent described in this section, works by currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art against the present disclosure.

[0003] Vehicles include frames and / or other structures that protect vehicle occupants during collisions. When a collision impact occurs, portions of the frame and / or other structures are designed to crush and deform and absorb some of the energy of the collision impact. Summary of the invention

[0004] An energy dissipation system for a vehicle frame includes a frame rail, the frame rail includes a compressible region and an incompressible region. An energy dissipation device includes an energy transfer portion, the energy transfer portion is partially arranged in the compressible region and partially arranged in the incompressible region, and is configured to move in response to a vehicle impact on the frame rail. The energy dissipation portion is arranged in the incompressible region and connected to the energy transfer portion. The energy dissipation device includes a first region connecting the energy dissipation portion to the incompressible region, and a second region connecting the energy dissipation portion to the energy transfer portion. The first region of the energy dissipation portion is stiffer than the second region of the energy dissipation portion.

[0005] In other features, the energy transfer portion includes a rod. The energy transfer portion also includes a plunger connected to one end of the rod. The energy transfer portion also includes N pins extending from the plunger in a direction transverse to the length of the rod, where N is an integer greater than 2. The energy dissipation portion includes N cylindrical portions, N side walls extending between radial edges of the N cylindrical portions, and N holes in the N side walls, the N holes being used to receive the N pins respectively. The first group of 2N fins extend outwardly from the N side walls on opposite sides of the N holes, respectively. The second group of 2N fins extend inwardly from the N side walls on opposite sides of the N holes, respectively.

[0006] In other features, the frame rail includes a first bulkhead, a second bulkhead, and a third bulkhead, the rod extending through the first bulkhead, and the rod extending through the second bulkhead. The plunger is located between the second bulkhead and the third bulkhead.

[0007] In other features, the energy dissipation portion is disposed between the second baffle and the third baffle.

[0008] An energy dissipation device includes an energy transfer portion configured to be partially disposed in a compressible deformation region of a vehicle frame member and partially disposed in an incompressible deformation region of the vehicle frame member and to move in response to a vehicle impact. The energy dissipation portion is configured to be disposed in the incompressible deformation region, connected to the energy transfer portion, and includes a first region configured to connect the energy dissipation portion to the incompressible deformation region and a second region connecting the energy dissipation portion to the energy transfer portion. The first region of the energy dissipation portion is stiffer than the second region of the energy dissipation portion.

[0009] The energy transmitting portion includes a rod, a plunger connected to one end of the rod, and N pins extending from the plunger, where N is an integer greater than 2. The energy dissipating portion includes N cylindrical portions; N side walls extending between radial edges of the N cylindrical portions; and N holes in the N side walls, the N holes being used to receive the N pins respectively.

[0010] In other features, a first set of 2N fins extend outwardly from the N sidewalls on opposite sides of the N holes, respectively. A second set of 2N fins extend inwardly from the N sidewalls on adjacent sides of the N holes, respectively.

[0011] An energy dissipation device includes an energy transfer portion, the energy transfer portion is configured to be arranged partially in an extrudable deformation area of ​​a vehicle frame member and partially in an inextrudable deformation area of ​​the vehicle frame member, and includes a rod, a plunger, a mounting member, and N pins, the plunger is connected to one end of the rod, the mounting member is configured to attach the rod to the extrudable deformation area of ​​the vehicle frame member, and the N pins extend from the plunger in a direction transverse to the rod, where N is an integer greater than 2. The energy dissipation portion is configured to be arranged in the inextrudable deformation area and connected to the energy transfer portion. The energy dissipation portion includes N cylindrical portions, N side walls extending between radial edges of the N cylindrical portions, and N holes in the N side walls, the N holes being used to respectively receive the N pins of the energy transfer portion.

[0012] In other features, a first set of 2N fins extend outwardly from the N sidewalls respectively on adjacent sides of the N holes, and a second set of 2N fins extend inwardly from the N sidewalls respectively on adjacent sides of the N holes.

[0013] This application may include the following options:

[0014] Solution 1. An energy dissipation system for a vehicle frame, comprising:

[0015] A frame longitudinal beam, the frame longitudinal beam comprising an extrudable and deformable region and an inextrudable and deformable region;

[0016] An energy dissipation device, the energy dissipation device comprising:

[0017] an energy transfer portion disposed partially in the compressible region and partially in the incompressible region and configured to move in response to a vehicle impact on the frame rail; and

[0018] an energy dissipation portion, which is arranged in the non-compressible deformation region, connected to the energy transmission portion, and comprises:

[0019] a first region connecting the energy dissipation portion to the incompressible deformation region; and

[0020] a second region connecting the energy dissipation portion to the energy transmission portion,

[0021] Wherein, the first region of the energy dissipation portion has a greater stiffness than the second region of the energy dissipation portion.

[0022] Option 2. An energy dissipation system according to Option 1, wherein the energy transfer portion includes a rod.

[0023] Option 3. The energy dissipation system of Option 2, wherein the energy transfer portion further comprises a plunger connected to one end of the rod.

[0024] Option 4. An energy dissipation system according to Option 3, wherein the energy transfer portion further comprises N pins extending from the plunger in a direction transverse to the length of the rod, wherein N is an integer greater than 2.

[0025] Solution 5. The energy dissipation system according to Solution 4, wherein the energy dissipation portion comprises:

[0026] N cylindrical parts;

[0027] N side walls extending between radial edges of the N cylindrical portions; and

[0028] There are N holes in the N side walls, the N holes are used to receive the N pins respectively.

[0029] Embodiment 6. The energy dissipation system according to embodiment 5 further comprises a first set of 2N fins extending outwardly from the N side walls respectively on opposite sides of the N holes.

[0030] Embodiment 7. The energy dissipation system according to embodiment 6 further comprises a second set of 2N fins extending inwardly from the N side walls respectively on opposite sides of the N holes.

[0031] Option 8. An energy dissipation system according to Option 5, wherein:

[0032] The frame longitudinal beam includes a first partition, a second partition and a third partition,

[0033] The rod extends through the first partition,

[0034] The rod extends through the second partition.

[0035] Option 9. An energy dissipation system according to Option 8, wherein the plunger is located between the second baffle and the third baffle.

[0036] Option 10. The energy dissipation system according to Option 9, wherein the energy dissipation portion is arranged between the second partition plate and the third partition plate.

[0037] Solution 11. An energy dissipation device, comprising:

[0038] an energy transfer portion configured to be disposed partially in a compressibly deformable region of a vehicle frame member and partially in a non-compressibly deformable region of the vehicle frame member and to move in response to a vehicle impact; and

[0039] an energy dissipation portion, the energy dissipation portion being configured to be arranged in the non-compressible deformation region, connected to the energy transmission portion, and comprising:

[0040] a first region configured to connect the energy dissipation portion to the incompressible deformation region; and

[0041] a second region connecting the energy dissipation portion to the energy transmission portion,

[0042] Wherein, the first region of the energy dissipation portion has a greater stiffness than the second region of the energy dissipation portion.

[0043] Solution 12. The energy dissipation device according to solution 11, wherein the energy transfer portion comprises:

[0044] Rod;

[0045] a plunger connected to one end of the rod; and

[0046] N pins extend from the plunger, where N is an integer greater than 2.

[0047] Solution 13. The energy dissipation device according to Solution 12, wherein the energy dissipation portion comprises:

[0048] N cylindrical parts;

[0049] N side walls extending between radial edges of the N cylindrical portions; and

[0050] There are N holes in the N side walls, the N holes are used to receive N pins respectively.

[0051] Embodiment 14. The energy dissipation device according to embodiment 13 further comprises a first group of 2N fins extending outward from the N side walls respectively on opposite sides of the N holes.

[0052] Embodiment 15. The energy dissipation device according to embodiment 14 further includes a second group of 2N fins extending inwardly from the N side walls respectively on adjacent sides of the N holes.

[0053] Solution 16. An energy dissipation device, comprising:

[0054] An energy transfer portion configured to be disposed partially in a compressibly deformable region of a vehicle frame member and partially in a non-compressibly deformable region of the vehicle frame member, and comprising:

[0055] Rod;

[0056] a plunger connected to one end of the rod;

[0057] a mounting member configured to attach the rod to the crushable region of the vehicle frame member; and

[0058] N pins extending from the plunger in a direction transverse to the rod, wherein N is an integer greater than 2; and

[0059] an energy dissipation portion, the energy dissipation portion being configured to be arranged in the non-compressible deformation region, connected to the energy transmission portion, and comprising:

[0060] N cylindrical parts;

[0061] N side walls extending between radial edges of the N cylindrical portions; and

[0062] The N holes in the N side walls are used to respectively receive the N pins of the energy transfer part.

[0063] Solution 17. The energy dissipation device according to Solution 16 further comprises:

[0064] a first set of 2N fins extending outwardly from the N sidewalls respectively on adjacent sides of the N holes; and

[0065] A second set of 2N fins extend inwardly from the N sidewalls respectively on adjacent sides of the N holes.

[0066] Further areas of applicability of the present disclosure will become apparent from the detailed description, claims and drawings.The detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The present disclosure will be more fully understood from the detailed description and accompanying drawings, in which:

[0068] Figure 1 is a functional diagram of an example of an energy dissipation system including a vehicle frame member and an energy dissipation device according to the present disclosure;

[0069] Figure 2 is a perspective view of an example of an energy dissipation device including an energy transmitting portion and an energy dissipating portion according to the present disclosure;

[0070] Figure 3 is a perspective view of an example of an energy dissipation portion according to the present disclosure;

[0071] Figure 4 is a perspective view of an example of an energy transfer portion according to the present disclosure;

[0072] Figure 5 is a side cross-sectional view of an example of a frame rail and energy dissipation device according to the present disclosure prior to a collision impact;

[0073] Figure 6 is a side cross-sectional view of an example of a frame rail and energy dissipation device after a crash impact according to the present disclosure;

[0074] Figure 7 is an example graph of velocity and deceleration as a function of time for a collision impact;

[0075] Figure 8 is an example graph of total energy, kinetic energy, internal energy, and erosion internal energy as a function of time for a collision impact; and

[0076] Fig. 9 is an example graph of the magnitude of the cross-sectional force as a function of time for a collision impact.

[0077] In the drawings, reference numerals may be repeated to identify similar and / or identical elements. DETAILED DESCRIPTION

[0078] An energy dissipation system according to the present disclosure includes an energy dissipation device mounted to the interior of a vehicle frame member to provide improved energy absorption during a collision impact. In some examples, a portion of the energy dissipation device is positioned in an incompressible region of the vehicle frame (such as a front rail or a rear rail). Another portion of the energy dissipation device is positioned in a compressible region (adjacent to the incompressible frame region) and in an incompressible region. The energy dissipation device reinforces the incompressible region to improve stiffness while also absorbing energy by deforming and rupturing in a specific region during a collision impact. The energy dissipation device can also increase the capacity of the rail to accommodate a wider mass bandwidth in the vehicle architecture.

[0079] Unlike existing structures, the energy dissipation device according to the present disclosure allows energy absorption to be performed in the incompressible deformation area of ​​the vehicle frame member. Non-limiting examples of the incompressible deformation area include pillars, brackets, motor mounting joints, etc. The energy dissipation device provides three forms of energy absorption, including fracture, deformation and friction. The energy dissipation device includes an energy transmission part and an energy dissipation part. The energy dissipation part is confined and fixed to the incompressible deformation area, and dissipates the energy of the collision impact.

[0080] Reference now Figure 1 , the vehicle 10 includes a vehicle frame member 12, which includes a compressible region 14 and an incompressible region 16. The compressible region 14 is compressibly deformed during a collision impact to absorb the energy of the collision impact, while the incompressible region 16 remains relatively intact and is not compressibly deformed during a collision impact. The energy dissipation device 18 includes an energy transfer portion 24 and an energy dissipation portion 30. The energy dissipation portion 30 is arranged in the incompressible region 16. The energy transfer portion 24 is initially mainly located in the compressible region 14, and moves to the incompressible region 16 during a collision impact.

[0081] The energy dissipation portion 30 includes a first region 34 connected to the non-compressible deformation region 16 and a second region 32 connected to both the first region 34 and the energy transfer portion 24. The second region 32 is softer than the first region 34. When a collision impact occurs, the energy transfer portion 24 is biased by the collision impact into the second region 32 of the energy dissipation portion 30, and the second region 32 absorbs energy from the collision impact through fracture, deformation, and friction.

[0082] Reference now Figure 2 , shows an energy dissipation device 100 according to the present disclosure. The energy dissipation device 100 allows for the dissipation of energy between frame members (e.g., see Figure 5 and Figure 6 In some examples, the frame member includes a plurality of partitions (e.g., in Figure 21 and 2. The energy dissipation device 100 provides three forms of energy absorption: fracture, deformation, and friction.

[0083] The energy dissipation device 100 includes an energy transfer portion 110 and an energy dissipation portion 140. The energy transfer portion 110 includes a rod 114, a mounting member 116, and a plunger 305 (see Figure 4 ), the mounting member 116 receives the middle portion of the rod 114, and the plunger 305 is connected to one end of the rod 114. In some examples, the mounting member 116 includes a circular plate having a central hole for receiving the rod 114. The partitions 122, 130, and 150 include a hole (e.g., the hole 126 shown) for receiving the rod 114. Similarly, the mounting member 116 also includes a hole 125 for receiving the rod 114. The mounting member 116 is attached to the partition 122. In some examples, the rod 114 is slidably received through the hole 125 in the mounting member 116 and the hole 126 in the partitions 122, 130, and 150. The pin 310 (see Figure 4 ) protrudes radially outward from the plunger 305 relative to the length direction or axial direction of the rod 114.

[0084] The energy transfer portion 110 is connected to a compressible region of a frame member such as a frame rail. As described above, the energy dissipation portion 140 includes a stiffer region connected to a non-compressible region of the frame member and a softer region connected to the energy transfer portion 110. The pin 310 is received by the softer region of the energy dissipation portion 140.

[0085] When the longitudinal beam is squeezed and deformed, the rod 114 of the energy transfer portion 110 maintains straight and backward movement. The plunger 305 and pin 310 of the energy transfer portion 110 are biased against the softer area of ​​the energy dissipation portion 140, which causes energy dissipation through fracture, deformation and friction. The energy dissipation portion 140 is constrained by and fixed to the non-extrudable deformation area of ​​the frame member. As a result, the energy dissipation portion 140 allows energy to be dissipated in a portion of the frame member that does not normally dissipate energy (e.g., the non-extrudable deformation area of ​​the frame longitudinal beam).

[0086] Reference now Figure 3 , shows an example of an energy dissipation portion 140. The energy dissipation portion 140 includes different regions that perform different functions. The first region fixes the block to the non-extrudable deformation region of the longitudinal beam. The second region absorbs energy mainly through deformation. The third region absorbs energy mainly through friction. The fourth region absorbs energy through fracture or fracture propagation. Examples of these regions are described below.

[0087] In some examples, energy dissipation portion 140 includes N sides, where N is an integer greater than 2. Figure 2, the energy dissipation portion 140 includes a generally rectangular cross-section (e.g., N=4), although other cross-sections such as circular, elliptical, polygonal, regular or irregular cross-sections may be used. The energy dissipation portion 140 includes N cylindrical portions 210, 212, 214, and 216 extending in the length direction and located at its corners. The N cylindrical portions 210, 212, 214, and 216 secure the energy dissipation portion 140 to the non-compressible deformation area of ​​the frame longitudinal beam.

[0088] The N side walls 220, 222, 224, and 226 extend between the radial side surfaces of the N cylindrical portions 210 and 212, 212 and 214, 214 and 216, and 216 and 210, respectively. One or more fins 230, 232, 234, and 236 extend outwardly and / or inwardly and longitudinally along the N side walls 220, 222, 224, and 226 in the same direction as the cylindrical portions. Although the 2N fins 230, 232, 234, and 236 are shown extending inwardly and outwardly, other arrangements and / or variations may also be used. The N holes 240, 242, 244, and 246 in the N side walls 220, 222, 224, and 226 are located between the fins on the side walls and are configured to receive the pins 310 of the energy transfer portion 110.

[0089] The fins 230, 232, 234 and 236 and the portions of the N side walls 220, 222, 224 and 226 located outside the fins 230, 232, 234 and 236 absorb energy mainly by deformation. The fins 230, 232, 234 and 236 also absorb energy by friction. The portions of the N side walls 220, 222, 224 and 226 located between the fins 230, 232, 234 and 236 absorb energy by fracture or fracture propagation.

[0090] Reference now Figure 4 , energy transfer portion 110 is shown in more detail. Rod 114 extends through mounting member 116 and is connected to plunger 305. Pin 310 extends radially outward from plunger 305. In some examples, N pins are used. Although N=4 pins are shown extending radially outward at intervals of 90° (or 360° / N), other angles and / or additional or fewer pins may be used.

[0091] In some examples, the energy transfer portion 110 is made significantly stronger than the energy dissipation portion 140 and is designed to engage soon after the point of impact on the stringer. As a result, the energy transfer portion 110 transfers energy through the rod 114.

[0092] In some examples, the energy transfer portion 110 is made significantly stronger than the energy dissipation portion 140. The energy transfer portion 110 engages soon after an impact to the stringer and transfers energy through the rod 114. The mount 116 stabilizes the rod 114 and secures the rod 114 to the frame member. The impact of the collision pushes the plunger 305 and pin 310 of the energy transfer portion 110 through the energy dissipation portion 140. In non-impact situations, the plunger 305 and pin 310 secure the energy transfer portion 110 to the energy dissipation portion 140.

[0093] Reference now Figure 5-6 , an energy dissipation portion 140 is shown installed within a longitudinal beam 400. In addition to the baffles 122, 130, and 150 shown above, the longitudinal beam 400 is shown to include a rectangular member 406 and one or more baffles 410. The rod 114 may extend through a hole in the baffle 410 adjacent to the baffle 122. The energy dissipation portion 140 is shown located between the baffles 150 and 410 that form the non-compressible deformable portion 420 of the longitudinal beam 400. Figure 6 4 shows the longitudinal beam 400 after the impact. The non-compressible deformable portion 420 remains substantially intact. As can be seen, the pin 310 of the energy transmitting portion 110 is pushed through the side wall of the energy dissipating portion 140 between the fins.

[0094] Reference now Figure 7-9 , the various graphs show improved characteristics during impact. Figure 7 , velocity is shown as a function of time for a baseline velocity 680, a baseline acceleration 670, an EDD velocity 650, and an EDD acceleration 660. The baseline is established by a vehicle including a longitudinal beam without an energy dissipation device. The earlier engagement of the energy dissipation device provides a more consistent pulse without a late peak (as can be seen during time period 610). The baseline data shows a tall, wide pulse occurring later during the crash event (as can be seen during time period 620). The energy dissipation device has a lower acceleration characteristic during the same crash event. The more linear velocity profile of the energy dissipation device and the more consistent pulse with reduced peaks later in the crash event (as can be seen during time period 620) improve occupant protection.

[0095] exist Figure 8 In the case of Figure 8 , baseline total energy 720, EDD total energy 730, EDD internal energy 740, baseline internal energy 750, EDD erosion internal energy 760, baseline kinetic energy 770, and EDD kinetic energy 780 are shown. When an energy dissipation device is used and a collision event occurs, the energy dissipation device absorbs erosion energy due to fracture. In addition, additional internal energy (the maximum difference between the energy dissipation device and the baseline) is absorbed due to deformation.

[0096] exist Fig. 9 In Figure 2, the section forces for the baseline frame members and the frame members including the energy dissipation devices are shown. Fig. 9 , the EDD stringer section force 930, the baseline stringer section force 940, and the EDD plunger section force 950 are shown. The baseline has a higher peak in the pulse and the stringer section increases later in the event due to the stringer section capacity being insufficient to properly mitigate the decelerating mass behind the stringer. The energy dissipation device increases the stringer capacity and does so by dissipating energy using deformation perpendicular to the direction of travel, friction, and material fracture that provides consistent resistance. When the energy dissipation device is used, the increased section force reduces the force deviation throughout the event.

[0097] The previous description is merely illustrative in nature and is in no way intended to limit the present disclosure, its application or use. The broad teachings of the present disclosure can be implemented in a variety of forms. Therefore, although the present disclosure includes specific examples, the true scope of the present disclosure should not be so limited, because after studying the drawings, the specification and the appended claims, other modifications will become apparent. It should be understood that one or more steps in the method can be performed in a different order (or simultaneously) without changing the principles of the present disclosure. In addition, although each embodiment in the embodiment is described above as having certain features, any one or more of those features described in any embodiment of the present disclosure can be implemented in any other embodiment and / or combined with the features of any other embodiment, even if the combination is not explicitly described. In other words, the described embodiments are not mutually exclusive, and the replacement of one or more embodiments with each other is still within the scope of the present disclosure.

[0098] Spatial and functional relationships between elements (e.g., between modules, circuit elements, semiconductor layers, etc.) are described using various terms, including "connected," "engaged," "coupled," "adjacent," "next to," "on top of," "above," "below," and "disposed." Unless explicitly described as "directly," when describing a relationship between a first element and a second element in the above disclosure, the relationship may be a direct relationship in which no other intermediate elements exist between the first element and the second element, but may also be an indirect relationship in which one or more intermediate elements (spatially or functionally) exist between the first element and the second element. As used herein, the phrase "at least one of A, B, and C" should be interpreted as representing a logical (A or B or C) using a non-exclusive logical "or," and should not be interpreted as representing "at least one of A, at least one of B, and at least one of C."

[0099] In the drawings, the direction of the arrow pointed by the arrow head generally indicates the flow of information (such as data or instructions) of interest to the illustration. For example, when component A exchanges various information with component B, but the information transmitted from component A to component B is relevant to the illustration, the arrow may point from component A to component B. This one-way arrow does not imply that no other information is transmitted from component B to component A. In addition, for information transmitted from component A to component B, component B may send a request for the information to component A or receive an acknowledgment.

Claims

1. An energy dissipation system for a vehicle frame, comprising: A frame longitudinal beam, the frame longitudinal beam comprising an extrudable and deformable region and an inextrudable and deformable region; An energy dissipation device, the energy dissipation device comprising: an energy transfer portion disposed partially in the compressible region and partially in the incompressible region and configured to move in response to a vehicle impact on the frame rail; and an energy dissipation portion, which is arranged in the non-compressible deformation region, connected to the energy transmission portion, and comprises: a first region connecting the energy dissipation portion to the incompressible deformation region; and a second region connecting the energy dissipation portion to the energy transmission portion, Wherein, the first region of the energy dissipation portion has a greater stiffness than the second region of the energy dissipation portion.

2. The energy dissipation system of claim 1, wherein the energy transfer portion comprises a rod.

3. The energy dissipation system of claim 2, wherein the energy transfer portion further comprises a plunger connected to one end of the rod. 4 . The energy dissipation system of claim 3 , wherein the energy transfer portion further comprises N pins extending from the plunger in a direction transverse to the length of the rod, wherein N is an integer greater than 2. 5 .

5. The energy dissipation system of claim 4, wherein the energy dissipation portion comprises: N cylindrical parts; N side walls extending between radial edges of the N cylindrical portions; and There are N holes in the N side walls, the N holes are used to receive the N pins respectively. 6 . The energy dissipation system of claim 5 , further comprising a first set of 2N fins extending outwardly from the N sidewalls respectively on opposite sides of the N holes.

7. The energy dissipation system of claim 6, further comprising a second set of 2N fins extending inwardly from the N sidewalls respectively on opposite sides of the N holes.

8. The energy dissipation system of claim 5, wherein: The frame longitudinal beam includes a first partition, a second partition and a third partition, The rod extends through the first partition, The rod extends through the second partition.

9. The energy dissipation system of claim 8, wherein the plunger is located between the second and third diaphragms. 10 . The energy dissipation system of claim 9 , wherein the energy dissipation portion is disposed between the second baffle and the third baffle.

11. An energy dissipation device comprising: an energy transfer portion configured to be disposed partially in a compressibly deformable region of a vehicle frame member and partially in a non-compressibly deformable region of the vehicle frame member and to move in response to a vehicle impact; as well as an energy dissipation portion, the energy dissipation portion being configured to be arranged in the non-compressible deformation region, connected to the energy transmission portion, and comprising: a first region configured to connect the energy dissipation portion to the incompressible deformation region; and a second region connecting the energy dissipation portion to the energy transmission portion, Wherein, the first region of the energy dissipation portion has a greater stiffness than the second region of the energy dissipation portion.

12. The energy dissipation device of claim 11, wherein the energy transfer portion comprises: Rod; a plunger connected to one end of the rod; as well as N pins extend from the plunger, where N is an integer greater than 2.

13. The energy dissipation device according to claim 12, wherein the energy dissipation portion comprises: N cylindrical parts; N side walls extending between radial edges of the N cylindrical portions; and There are N holes in the N side walls, the N holes are used to receive N pins respectively.

14. The energy dissipation device of claim 13, further comprising a first set of 2N fins extending outwardly from the N sidewalls, respectively, on opposite sides of the N holes.

15. The energy dissipation device of claim 14, further comprising a second set of 2N fins extending inwardly from the N sidewalls respectively on adjacent sides of the N holes.

16. An energy dissipation device comprising: An energy transfer portion configured to be disposed partially in a compressibly deformable region of a vehicle frame member and partially in a non-compressibly deformable region of the vehicle frame member, and comprising: Rod; a plunger connected to one end of the rod; a mounting member configured to attach the rod to the crushable region of the vehicle frame member; and N pins extending from the plunger in a direction transverse to the rod, wherein N is an integer greater than 2; and an energy dissipation portion, the energy dissipation portion being configured to be arranged in the non-compressible deformation region, connected to the energy transmission portion, and comprising: N cylindrical parts; N side walls extending between radial edges of the N cylindrical portions; and The N holes in the N side walls are used to respectively receive the N pins of the energy transfer part.

17. The energy dissipation device of claim 16, further comprising: a first group of 2N fins extending outwardly from the N sidewalls on adjacent sides of the N holes; as well as A second set of 2N fins extend inwardly from the N sidewalls respectively on adjacent sides of the N holes.

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