Energy absorbing device, vehicle, rigidity adjusting method, equipment, storage medium and program product

Abstract

The invention discloses an energy absorption device, a vehicle, a rigidity adjusting method, equipment, a storage medium and a program product, and relates to the technical field of vehicles. The energy absorption device comprises an energy absorption part and a damper, the length of the energy absorption part is configured to be adjustable, and the energy absorption part is arranged between a first structural part and a second structural part of the vehicle; the damper is connected with the energy absorption piece and used for adjusting the rigidity of the energy absorption piece. The length of the energy absorption piece is configured to be adjustable, so that the energy absorption piece can adapt to a first structural piece and a second structural piece with different distances; and by arranging the damper, the rigidity of the energy absorption device can be adjusted so as to adapt to different collision scenes. Therefore, the compatibility of the energy absorption device can be improved, and the energy absorption device is applied to the vehicle and can adapt to different vehicles and different collision scenes.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular, to an energy absorption device, a vehicle, a stiffness adjustment method, a device, a storage medium, and a program product. Background Art

[0002] An energy absorption device is usually provided in a vehicle. The energy absorption device is usually located between a bumper beam and a longitudinal beam and is used for buffering and energy absorption to protect the passengers in the cockpit. Currently, the compatibility of the energy absorption device is relatively low. For example, it cannot adapt to different vehicles or different collision scenarios. Summary of the Invention

[0003] Embodiments of the present application provide an energy absorption device, a vehicle, a stiffness adjustment method, a device, a storage medium, and a program product to at least partially solve the above technical problems.

[0004] To achieve the above object, according to a first aspect of the present application, there is provided an energy absorption device, including an energy absorption member and a damper. The length of the energy absorption member is configured to be adjustable, and the energy absorption member is disposed between a first structural member and a second structural member of the vehicle; the damper is connected to the energy absorption member and is used to adjust the stiffness of the energy absorption member.

[0005] In a possible implementation manner, the energy absorption member includes a first component and a second component. The first component is detachably connected to the second component. The first component is used to connect the first structural member, and the second component is used to connect the second structural member.

[0006] In a possible implementation manner, the energy absorption member includes a first component and a second component. The second component is slidably connected to the first component. The first component is used to connect the first structural member, and the second component is used to connect the second structural member.

[0007] In a possible implementation manner, one of the first component and the second component is sleeved on the other.

[0008] In a possible implementation manner, one end of the first component close to the first structural member has a first opening; and / or, one end of the second component close to the second structural member has a second opening.

[0009] In a possible implementation manner, one end of the damper is connected to the first component, and the other end is connected to the second component.

[0010] In a possible implementation manner, the first component is provided with a plurality of first connection portions. The plurality of first connection portions are spaced apart along the length direction of the energy absorption device, and at least one of the plurality of first connection portions is connected to the damper.

[0011] In a possible implementation, the energy absorption device further includes a first locking pin, the first connecting portion is a pin hole, and the first locking pin is configured to be inserted into one of the plurality of locking holes to connect the damper to the first component.

[0012] In a possible implementation, the second component is provided with a second connecting portion, and the damper is connected to the second connecting portion.

[0013] In a possible implementation, the energy absorption device further includes a second locking pin, the second connecting portion is a pin hole, and the second locking pin is configured to be inserted into the pin hole to connect the damper to the second component.

[0014] In a possible implementation, the damper includes one or more of an electromagnetic damper, a hydraulic damper, and a spring damper.

[0015] According to a second aspect of the present application, there is provided a vehicle including the energy absorption device provided in any embodiment of the first aspect.

[0016] In a possible implementation, the vehicle further includes a bumper beam and a longitudinal beam, and the energy absorption device is disposed between the bumper beam and the longitudinal beam.

[0017] In a possible implementation, the energy absorption device includes a first component and a second component connected to each other, the first component is connected to the bumper beam, and the second component is connected to the longitudinal beam.

[0018] In a possible implementation, the first component is provided with a plurality of first connecting portions, the plurality of first connecting portions are spaced apart along the length direction of the energy absorption device, and at least one of the plurality of first connecting portions is connected to the damper.

[0019] In a possible implementation, the energy absorption device further includes a first locking pin, the first connecting portion is a pin hole, and the first locking pin is configured to be inserted into one of the plurality of locking holes to connect the damper to the first component.

[0020] According to a third aspect of the present application, there is provided a method for adjusting the stiffness of an energy absorption device, which is applied to the above energy absorption device or the vehicle above, the energy absorption device includes a damper, and the method includes:

[0021] In response to the vehicle condition satisfying a first condition, adjust the damping of the damper to adjust the stiffness of the energy absorption device.

[0022] In a possible implementation, the first condition includes at least one of vehicle speed and a collision risk signal.

[0023] In a possible implementation, the damper is an electromagnetic damper, and the damping of the damper is adjusted by adjusting the input current of the damper.

[0024] In a possible implementation, adjusting the damping of the damper in response to the vehicle condition satisfying the first condition includes:

[0025] In response to the vehicle speed being less than or equal to the first threshold, input a first current to the damper; and / or

[0026] In response to the preset maximum driving speed of the vehicle, input a second current to the damper.

[0027] In a possible implementation, adjusting the damping of the damper in response to the vehicle condition satisfying the first condition further includes:

[0028] In response to the vehicle speed being between the first threshold and the preset maximum driving speed, input a third current to the damper, and the third current increases as the vehicle speed increases, where the third current is greater than the first current and less than the second current.

[0029] In a possible implementation, inputting a third current to the damper in response to the vehicle speed being between the first threshold and the preset maximum driving speed includes:

[0030] In response to the collision risk signal of the vehicle, input a third current to the damper.

[0031] In a possible implementation, the increase value of the third current with respect to the increase in the vehicle speed at the first threshold increases linearly based on the first current.

[0032] In a possible implementation, the slope of the linear function is related to the ratio of the difference between the third current and the first current to the difference between the preset maximum driving speed and the first threshold.

[0033] In a possible implementation, the slope of the linear function is equal to the ratio of the difference between the third current and the first current to the difference between the preset maximum driving speed and the first threshold.

[0034] According to the fourth aspect of the present application, a non-volatile storage medium is provided, storing computer-readable instructions, and the computer-readable instructions are called by a processor to implement the energy absorption device stiffness adjustment method of any embodiment of the third aspect.

[0035] According to the fifth aspect of the present application, a computer program product is provided, the computer program product includes a computer program, and when the computer program runs on an electronic device, the electronic device is caused to execute the energy absorption device stiffness adjustment method of any embodiment of the third aspect.

[0036] According to a sixth aspect of the present application, there is provided an electronic device, including a memory and a processor, where the memory stores computer-readable instructions, and the processor is configured to call the computer-readable instructions to implement the energy absorption device stiffness adjustment method according to any embodiment of the third aspect.

[0037] According to a seventh aspect of the present application, there is provided a vehicle, characterized by including the above-mentioned electronic device.

[0038] In the energy absorption device of the embodiments of the present application, by configuring the length of the energy absorption member to be adjustable, it can adapt to the first structural member and the second structural member with different distances; and by setting a damper, the stiffness of the energy absorption device can be adjusted to adapt to different collision scenarios. Thus, the compatibility of the energy absorption device can be improved, and when the energy absorption device is used in a vehicle, it can adapt to different vehicles and different collision scenarios.

[0039] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

[0041] In order to more fully understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals in the following description represent the same parts.

[0042] Figure 1 is a schematic structural diagram of an energy absorption device provided by some embodiments of the present application;

[0043] Figure 2 is an exploded schematic diagram of an energy absorption device provided by some embodiments of the present application;

[0044] Figure 3 is a schematic internal structure diagram of a damper provided by some embodiments of the present application;

[0045] Figure 4 is a schematic structural diagram of a damper provided by some embodiments of the present application;

[0046] Figure 5 is a schematic partial structure diagram of a vehicle provided by some embodiments of the present application;

[0047] Figure 6 is a flowchart of the energy absorption device stiffness adjustment method provided by some embodiments of the present application.

[0048] Description of Reference Numerals:

[0049] 100 - Energy Absorbing Device;

[0050] 10 - Energy Absorbing Member; 11 - First Component; 111 - First Connecting Portion; 112 - First Opening; 113 - First Flange; 12 - Second Component; 121 - Second Connecting Portion; 122 - Second Opening; 123 - Second Flange;

[0051] 20 - Damper; 21 - First Through - Hole; 22 - Second Through - Hole; 23 - Piston Rod; 24 - Piston; 25 - Piston Channel; 26 - Electromagnetic Fluid;

[0052] 30 - First Locking Pin;

[0053] 40 - Second Locking Pin;

[0054] 1000 - Vehicle;

[0055] 200 - Anti - Collision Beam;

[0056] 300 - Longitudinal Beam. Detailed Embodiment

[0057] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0058] Figure 1 Structural schematic diagram of the energy absorbing device 100 provided for some embodiments of the present application; Figure 2 Exploded schematic diagram of the energy absorbing device 100 provided for some embodiments of the present application; Figure 3 Internal structural schematic diagram of the damper 20 provided for some embodiments of the present application.

[0059] Referring to Figure 1 , Figure 2 and Figure 3 , according to the first aspect of the present application, there is provided an energy absorbing device 100, the energy absorbing device 100 includes an energy absorbing member 10 and a damper 20. The length of the energy absorbing member 10 is configured to be adjustable, and the energy absorbing member 10 is disposed between a first structural member and a second structural member of the vehicle 1000. The damper 20 is connected to the energy absorbing member 10, and the damper 20 is used to adjust the stiffness of the energy absorbing member 10.

[0060] Exemplarily, the first structural member and the second structural member are two protective members of the vehicle 1000. In one example, the first structural member is the front anti-collision beam of the vehicle 1000, and the second structural member is the longitudinal beam 300 of the vehicle 1000. In another example, the first structural member is the rear anti-collision beam of the vehicle 1000, and the second structural member is the longitudinal beam 300 of the vehicle 1000.

[0061] It can be understood that the spacing distance between the first structural member and the second structural member varies in different vehicles 1000 or different application scenarios. To improve compatibility, the length of the energy-absorbing member 10 is configured to be adjustable, so as to be able to adapt to the first structural member and the second structural member with different spacing distances.

[0062] It can be understood that the energy-absorbing member 10 can produce plastic deformation during a collision to absorb impact energy. The energy-absorbing member 10 can be a thin-walled structure made of high-strength steel. When being impacted, the energy-absorbing member 10 generates wrinkling deformation, converting the kinetic energy generated by the collision into the deformation energy of the material, thereby reducing the impact force transmitted to other parts of the vehicle 1000. Exemplarily, the energy-absorbing member 10 is in a box shape.

[0063] It can be understood that the damper 20 can generate a damping force to absorb impact energy. The damper 20 can adjust the damping force according to different collision intensities, thereby adjusting the stiffness of the energy-absorbing device 100. Among them, the damper 20 can include one or more of an electromagnetic damper, a hydraulic damper, and a spring damper.

[0064] Exemplarily, the damper 20 is an electromagnetic damper, and the electromagnetic damper is electrically connected to the control system of the vehicle 1000.

[0065] In the embodiments of the present application, by configuring the length of the energy-absorbing member 10 to be adjustable, it can adapt to the first structural member and the second structural member with different distances; and by setting the damper 20, the stiffness of the energy-absorbing device 100 can be adjusted to adapt to different collision scenarios. Thus, the compatibility of the energy-absorbing device 100 can be improved. The energy-absorbing device 100 is used in the vehicle 1000 and can adapt to different vehicles 1000 and different collision scenarios.

[0066] In some embodiments, the energy-absorbing member 10 includes a first component 11 and a second component 12. The first component 11 is detachably connected to the second component 12. The first component 11 is used to connect the first structural member, and the second component 12 is used to connect the second structural member.

[0067] In the embodiments of the present application, the energy-absorbing member 10 is set as a detachable structure, so that when the energy-absorbing member 10 is damaged, only the damaged one of the first component 11 and the second component 12 needs to be replaced, which helps to improve the maintainability of the energy-absorbing member 10 and reduce costs.

[0068] In some embodiments, the energy absorber 10 includes a first component 11 and a second component 12. The second component 12 is slidably connected to the first component 11. The first component 11 is used to connect to a first structural member, and the second component 12 is used to connect to a second structural member.

[0069] It can be understood that the first component 11 and the second component 12 can slide relative to each other in the length direction of the energy absorption device 100.

[0070] In the embodiments of the present application, by slidably connecting the first component 11 and the second component 12, the difficulty of adjusting the length of the energy absorber 10 can be reduced, and the adjustment efficiency can be improved.

[0071] In other embodiments, the energy absorption device 100 can also adopt a telescopic structure or a splicing structure, so as to realize the adjustable length of the energy absorption device 100.

[0072] In some embodiments, one of the first component 11 and the second component 12 is sleeved on the other.

[0073] It can be understood that it can be the first component 11 sleeved on the second component 12, or the second component 12 sleeved on the first component 11. Exemplarily, as Figure 3 shown, the first component 11 is sleeved on the second component 12.

[0074] In the embodiments of the present application, by sleeving one of the first component 11 and the second component 12 on the other, it is convenient for the two to be connected, which helps to improve the connection strength between the two.

[0075] In addition, when there are corners in the first component 11 and the second component 12, sleeving one of the first component 11 and the second component 12 on the other can limit each other in the circumferential direction, reduce the risk of rotation, and thus improve the structural stability of the energy absorber 10.

[0076] Referring to Figure 3 , in some embodiments, one end of the first component 11 close to the first structural member has a first opening 112. In some embodiments, one end of the second component 12 close to the second structural member has a second opening 122.

[0077] In specific applications, the first opening 112 can correspond to a cavity on the first structure. The second component 12 is provided with a second opening 122, and the second opening 122 can correspond to a cavity on the second structural member. In this way, the force transmission path of the energy absorption device 100 can be optimized, so that the force transmission path during the collision of the energy absorption device 100 can be transmitted from the first structural member to the second structural member.

[0078] In some embodiments, one end of the damper 20 is connected to the first component 11, and the other end is connected to the second component 12 to reduce the assembly difficulty of the energy absorption device 100.

[0079] In some embodiments, the second component 12 is slidably connected to the first component 11. One end of the damper 20 is connected to the first component 11, and the other end is connected to the second component 12. With such an arrangement, during the assembly process, after the damper 20 is respectively connected to the first component 11 and the second component 12, the damper 20 can fix the energy absorber 10 at the required length, without the need to additionally provide a limiting structure to fix the energy absorber 10 at a specific length.

[0080] In some embodiments, the damper 20 and the first component 11 can be connected by a locking member.

[0081] In some embodiments, the damper 20 and the second component 12 can be connected by a locking member.

[0082] In some embodiments, the first component 11 is provided with a plurality of first connection portions 111. The plurality of first connection portions 111 are arranged at intervals along the length direction of the energy absorption device 100. At least one of the plurality of first connection portions 111 is connected to the damper 20.

[0083] Since the length of the energy absorber 10 is adjustable, when the energy absorption device 100 is assembled into different vehicles 1000, the connection position between the damper 20 and the first component 11 will change. In the embodiments of the present application, by providing a plurality of first connection portions 111, the damper 20 can be connected to the corresponding first connection portion 111 without changing the structure of the damper 20. Thus, the damper 20 can adapt to the length-adjustable energy absorber 10 while maintaining its own structure unchanged, thereby achieving higher compatibility.

[0084] Refer to Figure 2 and Figure 3 , in some embodiments, the energy absorption device 100 further includes a first locking pin 30. The first connection portion 111 is a pin hole. The first locking pin 30 is configured to be inserted into one of the plurality of pin holes to realize the connection between the damper 20 and the first component 11. With such an arrangement, the assembly difficulty between the damper 20 and the first component 11 can be reduced, and it is also convenient to disassemble the damper 20.

[0085] In some embodiments, the second component 12 is provided with a second connection portion 121. The damper 20 is connected to the second connection portion 121 to reduce the connection difficulty between the two.

[0086] In some embodiments, the energy absorption device 100 further includes a second locking pin 40. The second connection portion 121 is a pin hole. The second locking pin 40 is configured to be inserted into the pin hole to realize the connection between the damper 20 and the second component 12. With such an arrangement, the assembly difficulty between the damper 20 and the second component can be reduced, and it is also convenient to disassemble the damper 20.

[0087] In some embodiments, a first through hole 21 is provided at one axial end of the damper 20, and a second through hole 22 is provided at the other end. The first locking pin 30 is inserted through the first through hole 21 and the locking hole of the first component 11 to connect the damper 20 and the first component 11. The second locking pin 40 is inserted through the second through hole 22 and the locking hole of the second component 12 to connect the damper 20 and the second component 12.

[0088] In other embodiments, the first connecting portion 111 and the second connecting portion 121 may also be lugs. One end of the damper 20 is hooked to the first component 11, and the other end is hooked to the second component 12.

[0089] In some embodiments, the first component 11 is provided with a first flange 113, and the first flange 113 is used to connect to the first structural member.

[0090] In some embodiments, the second component 12 is provided with a second flange 123, and the second flange 123 is used to connect to the second structural member.

[0091] Referring to Figure 4 , Figure 4 is a schematic structural diagram of the damper 20 provided in some embodiments of the present application. In some embodiments, the damper 20 is an electromagnetic damper. The damper 20 includes a body and a piston rod 23. A piston channel 25 is provided inside the body. One end of the piston rod 23 where the piston 24 is provided is movably disposed inside the piston channel 25, and an electromagnetic fluid 26 is provided inside the piston channel 25. An electromagnetic coil is provided inside the piston rod 23.

[0092] Working principle of the electromagnetic damper: When the piston 24 moves, the electromagnetic fluid 26 flows between the upper and lower cavities through the piston channel 25. By adjusting the input current of the electromagnetic coil, the electromagnetic field inside the piston channel 25 is adjusted, thereby changing the damping and realizing the damping adjustment of the damper 20.

[0093] When the energy absorption device 100 is used for the vehicle 1000, the electromagnetic coil can be electrically connected to the control system of the vehicle 1000.

[0094] According to the second aspect of the present application, a vehicle 1000 is provided, including the energy absorption device 100 provided in any of the embodiments of the first aspect. Since the vehicle 1000 includes the energy absorption device 100, therefore, the vehicle 1000 has all the beneficial effects of the energy absorption device 100, which will not be elaborated here.

[0095] The vehicle 1000 may be a fuel vehicle, a plug-in hybrid vehicle or a new energy vehicle, etc. The present disclosure does not make specific limitations thereto.

[0096] Referring to Figure 5 , Figure 5Partial structural schematic diagram of vehicle 1000 provided for some embodiments of the present application.

[0097] In some embodiments, vehicle 1000 further includes a bumper beam 200 and a longitudinal beam 300, and the energy absorption device 100 is disposed between the bumper beam 200 and the longitudinal beam 300.

[0098] The bumper beam 200 can be the front bumper beam of vehicle 1000 or the rear bumper beam of vehicle 1000.

[0099] In some embodiments, the energy absorption device 100 includes a first component 11 and a second component 12 connected to each other. The first component 11 is connected to the bumper beam 200, and the second component 12 is connected to the longitudinal beam 300.

[0100] In some embodiments, the first component 11 is provided with a plurality of first connection portions 111. The plurality of first connection portions 111 are spaced apart along the length direction of the energy absorption device 100, and at least one of the plurality of first connection portions 111 is connected to the damper 20.

[0101] Generally, the longitudinal beam 300 is located inside the vehicle 1000, the bumper beam 200 is closer to the outside of the vehicle 1000, and the first component 11 is closer to the bumper beam 200. By providing a plurality of first connection portions 111 on the first component 11, when adjusting the length of the energy absorption member 10, the damper 20 does not move, and only the positions of the first component 11 and the bumper beam 200 need to be adjusted. Thus, the adjustment difficulty can be reduced.

[0102] According to a third aspect of the present application, there is provided a method for adjusting the stiffness of an energy absorption device 100, which is applied to the above-mentioned energy absorption device 100 or the above-mentioned vehicle 1000. The energy absorption device 100 includes a damper 20. The method includes the following main steps:

[0103] S10: In response to the vehicle condition satisfying a first condition, adjust the damping of the damper 20 to adjust the stiffness of the energy absorption device 100, so that the energy absorption device 100 obtains a stiffness adapted to the vehicle condition.

[0104] When the energy absorption device 100 is disposed between a first structural member and a second structural member (for example, between the bumper beam 200 and the longitudinal beam 300), the collision force can be dispersed by the bumper beam 200 and transmitted to the energy absorption device 100 and the longitudinal beam 300. The longitudinal beam 300 absorbs part of the collision energy through its own deformation, reduces the impact force transmitted to the vehicle body, and at the same time disperses the remaining impact force to other parts of the vehicle body to protect the safety of the driver and passengers. If the rigidity of the energy absorption device 100 is too large, it is easy to cause structural overload damage and the impact force to be transmitted to the vehicle body during a collision, and it will also cause a decrease in driving comfort and an increase in component wear during normal driving; if the rigidity is too small, there will be problems such as insufficient absorption of collision energy, an increase in the risk of vehicle body structure deformation, and a lag in dynamic response and an increase in the risk of loss of control during driving. Therefore, keeping the energy absorption device 100 with an appropriate rigidity under different vehicle conditions is of great significance for optimizing the safety performance and overall performance of the vehicle 1000.

[0105] In an embodiment of the present application, according to the vehicle condition satisfying a first condition, the damping of the damper 20 is adjusted, thereby adjusting the rigidity of the energy absorption device 100. This method can reasonably adjust the damping of the electromagnetic damper according to different collision conditions such as low speed and high speed, thereby controlling the energy absorption of the energy absorption device 100, which helps to improve driving stability, reduce component wear, extend the service life, and achieve the balanced optimization of collision safety and the performance of the vehicle 1000.

[0106] In some embodiments, the first condition includes at least one of vehicle speed and a collision risk signal.

[0107] It can be understood that the damping of the damper 20 can be adjusted according to the vehicle speed. For example, when the vehicle speed is small, the damping of the damper 20 is reduced, thereby reducing the rigidity of the energy absorption device 100, so that the damper 20 can also deform and absorb energy under a small collision, reducing the risk of damage to other components; when the vehicle speed is large, the damping of the damper 20 can be increased, thereby increasing the rigidity of the energy absorption device 100 to provide effective support for the bumper beam 200 and improve driving safety.

[0108] It can be understood that the damping of the damper 20 can also be adjusted according to the collision risk signal, thereby adjusting the rigidity of the energy absorption device 100. For example, when the vehicle 1000 system detects a collision risk signal, the damping of the damper 20 is increased, and when no collision risk is detected, the damping of the damper 20 is reduced or the damping of the damper 20 is kept unchanged.

[0109] Refer to Figure 6 , Figure 6 is a flowchart of a method for adjusting the rigidity of the energy absorption device 100 provided in some embodiments of the present application. The collision risk signal includes a collision risk signal fed back by at least one of a millimeter wave radar, a camera, and a vehicle speed sensor.

[0110] In some embodiments, the damper 20 is an electromagnetic damper, and the input current of the electromagnetic damper is adjusted to adjust the damping of the damper 20. This method can reduce the difficulty of adjusting the damping of the damper 20, thereby reducing the difficulty of adjusting the stiffness of the energy absorption device 100.

[0111] Referring to Figure 6 , in some embodiments, step S10 includes:

[0112] S11: In response to the vehicle speed being less than or equal to the first threshold, input a first current to the damper 20;

[0113] S12: In response to the preset maximum driving speed of the vehicle 1000, input a second current to the damper 20.

[0114] Wherein, the first threshold may be the low-speed driving speed set for the vehicle 1000. For example, the first threshold may be 15 km / h.

[0115] It can be understood that the first threshold is the low-speed driving speed set for the vehicle 1000, and the first threshold may have different values according to different vehicles 1000. When driving at a low speed, the collision risk of the vehicle 1000 is relatively low. When the vehicle speed is less than or equal to the first threshold, inputting a first current to the damper 20 can reduce the adverse effects such as unstable energy absorption during collisions and abnormal responses of the vehicle 1000 safety system caused by frequent changes in the input current.

[0116] It can be understood that the preset maximum driving speed of the vehicle 1000 may have different values according to different vehicles 1000. When the vehicle 1000 is at the preset maximum driving speed, the collision risk of the vehicle 1000 is relatively high, and the energy absorption device 100 needs the maximum stiffness under this vehicle condition, which requires the damper 20 to have the highest damping. Inputting a second current to the damper 20 can make the stiffness of the energy absorption device 100 reach the maximum stiffness required for the vehicle condition. At this time, the damping of the damper 20 is the maximum stiffness suitable for the vehicle 1000 under adverse vehicle conditions.

[0117] When the energy absorption device 100 is used between the anti-collision beam 200 and the longitudinal beam 300, usually the stiffness of the energy absorption device 100 is less than or equal to the stiffness of the longitudinal beam 300, so that the energy absorption device 100 can be wrinkled and deformed prior to the longitudinal beam 300 to achieve the effect of buffering and energy absorption. Therefore, the second current input to the electromagnetic damper can be set according to the stiffness of the longitudinal beam 300, so that when the vehicle 1000 is at the preset maximum driving speed, the stiffness of the energy absorption device 100 is less than or equal to the stiffness of the longitudinal beam 300, and further the energy absorption device 100 can be wrinkled and deformed prior to the longitudinal beam 300 or simultaneously with the longitudinal beam 300.

[0118] In some embodiments, step S10 further includes:

[0119] S13: In response to the vehicle speed being between the first threshold and the preset maximum driving speed, a third current is input to the damper 20, and the third current increases as the vehicle speed increases, where the third current is greater than the first current and less than the second current.

[0120] It can be understood that the third current can be input according to the vehicle speed, so as to adjust the energy absorption device 100 to the stiffness suitable for this vehicle speed.

[0121] In some embodiments, step S13 includes:

[0122] In response to the collision risk signal of the vehicle 1000, a third current is input to the damper 20.

[0123] It can be understood that when the collision risk signal is not detected, the input current of the electromagnetic damper can remain unchanged, and the current of the electromagnetic damper is changed when the collision risk signal is detected. Thus, it is possible to reduce the adverse effects such as unstable energy absorption during collision and abnormal response of the vehicle 1000 safety system caused by frequent change of the input current.

[0124] In some embodiments, the increase value of the third current with respect to the vehicle speed at the first threshold linearly increases on the basis of the first current. With such a setting, the third current can be made controllable, which helps to improve the driving stability of the vehicle 1000.

[0125] In some embodiments, the slope of the linear function is related to the ratio of the difference between the third current and the first current to the difference between the preset maximum driving speed and the first threshold. In the embodiments of the present application, by establishing the matching relationship between the third current and the speed of the vehicle 1000, the damper 20 can dynamically adjust the damping force according to the vehicle speed, which helps to realize the intelligent adjustment of the stiffness of the energy absorption device 100.

[0126] In some embodiments, the slope of the linear function is equal to the ratio of the difference between the third current and the first current to the difference between the preset maximum driving speed and the first threshold. Thus, an appropriate slope can be determined according to the third current, the first current, the preset maximum driving speed and the first threshold, so as to obtain an appropriate third current, and further realize the balanced optimization of collision safety and the performance of the vehicle 1000.

[0127] In some embodiments, I is the third current, V is the current speed of the vehicle 1000, V is the first threshold, I min is the first current, I max is the second current, I = K(V - V 15 ) + I min , K = (I max - I min ) / (V max - V 15 ).

[0128] In one exemplary embodiment, vehicle 1000 is a sedan, V 15 = 15 km / h, I min = 0.3 A, I max = 1.2 A, V max = 200 km / h.

[0129] In another exemplary embodiment, vehicle 1000 is an SUV, V 15 = 15 km / h, I min = 0.4 A, I max = 1.4 A, V max = 200 km / h.

[0130] In yet another exemplary embodiment, vehicle 1000 is an off-road vehicle, V 15 = 15 km / h, I min = 0.5 A, I max = 1.5 A, V max = 180 km / h.

[0131] According to the fourth aspect of the present application, there is provided a non-volatile storage medium storing computer-readable instructions that are called by a processor to implement the energy-absorbing device stiffness adjustment method according to any embodiment of the third aspect. Since the storage medium can be used to implement the above energy-absorbing device stiffness adjustment method, the storage medium has all the beneficial effects of the energy-absorbing device stiffness adjustment method, which will not be elaborated here.

[0132] According to the fifth aspect of the present application, there is provided a computer program product including a computer program that, when running on an electronic device, causes the electronic device to execute the energy-absorbing device stiffness adjustment method according to any embodiment of the third aspect. Since the program product can be used to execute the above energy-absorbing device stiffness adjustment method, the program product has all the beneficial effects of the energy-absorbing device stiffness adjustment method, which will not be elaborated here.

[0133] It can be understood that to implement all or part of the processes in the methods of the above embodiments, it can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the various embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memories can include read-only memory (ROM), magnetic tapes, floppy disks, flash memories, optical memories, high-density embedded non-volatile memories, resistive random access memories (ReRAM), magnetoresistive random access memories (MRAM), ferroelectric random access memories (FRAM), phase change memories (PCM), graphene memories, etc. Volatile memories can include random access memory (RAM) or external cache memories, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The processors involved in the various embodiments provided in the present application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logics, data processing logics based on quantum computing, etc., and are not limited thereto.

[0134] According to a sixth aspect of the present application, there is provided an electronic device, including a memory and a processor. The memory stores computer-readable instructions, and the processor is configured to call the computer-readable instructions to implement the energy-absorbing device stiffness adjustment method of any embodiment of the third aspect. The electronic device can be used to call the computer-readable instructions to implement the above energy-absorbing device stiffness adjustment method. Therefore, it has all the beneficial effects of the energy-absorbing device stiffness adjustment method and will not be elaborated here.

[0135] According to a seventh aspect of the present application, there is provided a vehicle, including the above electronic device. The vehicle includes the electronic device, which can call the computer-readable instructions to implement the above energy-absorbing device stiffness adjustment method. Therefore, it has all the beneficial effects of the energy-absorbing device stiffness adjustment method and will not be elaborated here.

[0136] In the description of the present application, the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0137] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0138] Among the embodiments, implementation manners and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0139] The above are only the preferred embodiments of the present application and do not impose any form of limitation on the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. An energy absorption device, characterized in that, Comprising: An energy - absorbing member, the length of the energy - absorbing member being configured to be adjustable, and the energy - absorbing member being disposed between a first structural member and a second structural member of a vehicle; A damper, connected to the energy - absorbing member for adjusting the stiffness of the energy - absorbing member.

2. The energy absorption device according to claim 1, characterized in that, The energy - absorbing member includes a first component and a second component, the first component being detachably connected to the second component, the first component being used to connect to the first structural member, and the second component being used to connect to the second structural member.

3. The energy absorption device according to claim 1, characterized in that, The energy - absorbing member includes a first component and a second component, the second component being slidably connected to the first component, the first component being used to connect to the first structural member, and the second component being used to connect to the second structural member.

4. The energy absorption device according to claim 3, wherein One of the first component and the second component is sleeved on the other.

5. The energy absorption device according to claim 2 or 3, characterized in that One end of the first component close to the first structural member has a first opening; and / or, One end of the second component close to the second structural member has a second opening.

6. The energy absorption device according to claim 2 or 3, characterized in that One end of the damper is connected to the first component, and the other end is connected to the second component.

7. The energy absorption device according to claim 6, characterized in that, The first component is provided with a plurality of first connection portions, the plurality of first connection portions being spaced apart along the length direction of the energy - absorbing device, and at least one of the plurality of first connection portions is connected to the damper.

8. The energy absorption device according to claim 7, wherein The energy - absorbing device further includes a first locking pin, the first connection portion being a pin hole, and the first locking pin being configured to be inserted into one of the plurality of locking holes to achieve the connection between the damper and the first component.

9. The energy absorption device according to claim 7, wherein, The second component is provided with a second connection portion, and the damper is connected to the second connection portion.

10. The energy absorption device according to claim 9, characterized in that, The energy - absorbing device further includes a second locking pin, the second connection portion being a pin hole, and the second locking pin being configured to be inserted into the pin hole to achieve the connection between the damper and the second component.

11. The energy absorption device according to any one of claims 1-3, characterized in that, The damper includes one or more of an electromagnetic damper, a hydraulic damper, and a spring damper.

12. A vehicle, characterized in that, Comprising the energy - absorbing device according to any one of claims 1 - 11.

13. The vehicle according to claim 12, characterized in that, The vehicle further includes a bumper beam and a longitudinal beam, and the energy - absorbing device is disposed between the bumper beam and the longitudinal beam.

14. The vehicle according to claim 13, characterized in that, The energy - absorbing device includes a first component and a second component connected to each other, the first component being connected to the bumper beam, and the second component being connected to the longitudinal beam.

15. The vehicle according to claim 14, characterized in that, The first component is provided with a plurality of first connection portions, the plurality of first connection portions being spaced apart along the length direction of the energy - absorbing device, and at least one of the plurality of first connection portions is connected to the damper.

16. The vehicle according to claim 15, characterized in that, The energy - absorbing device further includes a first locking pin, the first connection portion being a pin hole, and the first locking pin being configured to be inserted into one of the plurality of locking holes to achieve the connection between the damper and the first component.

17. A method for adjusting the stiffness of an energy absorption device, characterized in that, Applied to the energy - absorbing device according to any one of claims 1 - 11 or the vehicle according to any one of claims 12 - 16, the energy - absorbing device includes a damper, and the method includes: In response to the vehicle condition satisfying a first condition, adjusting the damping of the damper to thereby adjust the stiffness of the energy - absorbing device.

18. The energy-absorbing device stiffness adjustment method according to claim 17, characterized in that The first condition includes at least one of vehicle speed and a collision risk signal.

19. The energy absorption device stiffness adjustment method according to claim 17, characterized in that The damper is an electromagnetic damper, and adjusting the input current of the damper to adjust the damping of the damper.

20. The energy absorption device stiffness adjustment method according to claim 19, characterized in that The adjusting the damping of the damper in response to the vehicle condition satisfying the first condition includes: In response to the vehicle speed being less than or equal to the first threshold, input a first current to the damper; and / or In response to the preset maximum driving speed of the vehicle, input a second current to the damper.

21. The energy absorption device stiffness adjustment method according to claim 20, wherein The adjusting the damping of the damper in response to the vehicle condition satisfying the first condition further includes: In response to the vehicle speed being between the first threshold and the preset maximum driving speed, input a third current to the damper, the third current increasing as the vehicle speed increases, wherein the third current is greater than the first current and less than the second current.

22. The energy absorption device stiffness adjustment method according to claim 21, wherein, The inputting a third current to the damper in response to the vehicle speed being between the first threshold and the preset maximum driving speed includes: In response to the collision risk signal of the vehicle, input a third current to the damper.

23. The energy absorption device stiffness adjustment method according to claim 22, characterized in that, The increase value of the third current with respect to the increase in the vehicle speed at the first threshold linearly increases on the basis of the first current.

24. The energy absorption device stiffness adjustment method according to claim 23, wherein The slope of the linear function is related to the ratio of the difference between the third current and the first current to the difference between the preset maximum driving speed and the first threshold.

25. The method for adjusting the stiffness of the energy absorption device according to claim 24, characterized in that, The slope of the linear function is equal to the ratio of the difference between the third current and the first current to the difference between the preset maximum driving speed and the first threshold.

26. A non-volatile storage medium, characterized in that, Stores computer-readable instructions, which are called by a processor to implement the energy-absorbing device stiffness adjustment method according to any one of claims 17-25.

27. A computer program product, characterized in that, The computer program product includes a computer program, which, when running on an electronic device, causes the electronic device to execute the energy-absorbing device stiffness adjustment method according to any one of claims 17-25.

28. An electronic device, characterized in that, Includes a memory and a processor, the memory stores computer-readable instructions, and the processor is configured to call the computer-readable instructions to implement the energy-absorbing device stiffness adjustment method according to any one of claims 17 to 25.

29. A vehicle, characterized in that, Includes the electronic device according to claim 28.

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