Vehicle hydrogen storage structure and vehicle

Abstract

The utility model provides a vehicle hydrogen storage structure and a vehicle. The vehicle hydrogen storage structure comprises a lower vehicle body frame, a first support, a plurality of protection frames and a plurality of second supports. The lower vehicle body frame comprises a first cross beam, a second cross beam and two longitudinal beams, the first cross beam, the second cross beam and the two longitudinal beams define a first closed-loop frame, and the first closed-loop frame is used for containing a hydrogen tank. One end of the first support is connected with the first beam, the other end of the first support is connected with the second beam, and the first support is provided with a rotating seat connected with the hydrogen tank so that the hydrogen tank can rotate relative to the lower vehicle body frame. A buffer piece is arranged on the inner side of each protection frame and abuts against the hydrogen tank, and the hydrogen tanks are supported by the buffer pieces and can move relative to the protection frames. One end of each second support is connected with the first cross beam, the other end of each second support is connected with the second cross beam, and each second support supports one corresponding protection frame. According to the vehicle hydrogen storage structure, through cooperation of the soft structure and the hard structure, when the vehicle hydrogen storage structure is collided, energy absorption can be increased, deformation is reduced, and safety of a hydrogen tank is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a vehicle hydrogen storage structure and vehicle. Background Technology

[0002] Currently, in hydrogen fuel cell vehicles, the safety of hydrogen, as a special energy medium, is the most concerning and difficult issue to address. The common storage method involves storing hydrogen in a tank located under the rear of the vehicle, and then supplying the hydrogen to the fuel cell via a pipeline. Among various collision scenarios, rear-end collisions pose the greatest threat to hydrogen tanks. Severe collisions can cause the tank to displace or deform, leading to hydrogen leakage, combustion, and explosion, threatening the safety of the occupants.

[0003] In related technologies, the main way to improve the safety of hydrogen tanks is to strengthen the vehicle body structure. However, this can easily lead to problems such as increased vehicle weight. Furthermore, when a vehicle is involved in a collision, only the structural deformation on the side of the collision absorbs energy, resulting in poor energy absorption and greater stress on the hydrogen tank. Utility Model Content

[0004] In view of this, it is necessary to provide a vehicle hydrogen storage structure and vehicle that improves the safety of hydrogen tanks.

[0005] One embodiment of this application provides a vehicle hydrogen storage structure, including a lower body frame, a first support, multiple protective frames, and multiple second supports. The lower body frame includes a first crossbeam, a second crossbeam, and two longitudinal beams. The first and second crossbeams are connected between the two longitudinal beams, forming a first closed-loop frame for accommodating a hydrogen tank. One end of the first support is connected to the first crossbeam, and the other end is connected to the second crossbeam. A rotating seat is provided between the two ends of the first support, and the rotating seat is connected to the hydrogen tank, allowing the hydrogen tank to rotate relative to the lower body frame. Each protective frame has a buffer member on its inner side, which abuts against the hydrogen tank, supporting the tank and allowing it to move relative to the protective frame. One end of each second support is connected to the first crossbeam, and the other end is connected to the second crossbeam. Each second support supports a corresponding protective frame.

[0006] The vehicle hydrogen storage structure provided in this application, when in the event of a collision, houses the hydrogen tank within a first closed-loop frame formed by the first crossbeam, the second crossbeam, and two longitudinal beams. The first closed-loop frame serves as a rigid structure, enabling the hydrogen tank to be protected by the rigid structure and thus withstand the impact.

[0007] The hydrogen tank is also connected by a rotating seat. The rotating seat is a flexible structure that allows the hydrogen tank to rotate relative to the lower body frame around an axis that is parallel to the vertical direction of the lower body frame. In the event of a collision, the hydrogen tank can increase its energy absorption by rotating, thereby reducing the force on the hydrogen tank.

[0008] The hydrogen tank is also supported by a buffer inside the protective frame, which allows the hydrogen tank to move relative to the lower body frame when it is impacted. The buffer, as a soft structure, can play a buffering role, increase energy absorption and reduce the force on the hydrogen tank.

[0009] Furthermore, a first support and multiple second supports are connected between the first and second crossbeams, forming multiple force transmission paths between the first and second crossbeams. In the event of a collision, the force on the first crossbeam can be transmitted to the second crossbeam through multiple paths, thereby dispersing the force on the first closed-loop frame, reducing the deformation of the first closed-loop frame, and thus reducing the impact on the hydrogen tank after the first closed-loop frame deforms significantly, in order to protect the hydrogen tank in the first closed-loop frame.

[0010] In summary, the vehicle hydrogen storage structure provided in this application, through the combination of soft and hard structures, can increase energy absorption and reduce deformation when subjected to a collision, avoiding the defects such as increased structural weight caused by purely hard impact resistance, and improving the safety of the hydrogen tank.

[0011] In some embodiments, the first bracket includes a first support portion, two suspension portions and two first mounting portions. The rotating seat is disposed on the first support portion. Each end of the first support portion is connected to one of the suspension portions. The end of each suspension portion away from the first support portion is connected to one of the first mounting portions. One of the first mounting portions is mounted on the first crossbeam and the other of the first mounting portions is mounted on the second crossbeam. The distance between the two suspension portions gradually increases from the first support portion toward the hydrogen tank.

[0012] In some embodiments, the first bracket further includes a plurality of first reinforcing plates and a plurality of first energy-absorbing boxes. At least one first reinforcing plate is connected between the connected suspension part and the first mounting part. The first reinforcing plate is provided with a first hollow hole. At least one first energy-absorbing box is connected between each first mounting part and the connected first reinforcing plate.

[0013] In some embodiments, each of the second supports includes a second support portion and two second mounting portions. Each end of the second support portion is connected to a second mounting portion. One second mounting portion is mounted on the first crossbeam, and the other second mounting portion is mounted on the second crossbeam. The second support portion and the protective frame extend circumferentially along the hydrogen tank, and each second support portion is used to support one of the protective frames.

[0014] In some embodiments, a gap is provided at the connection between the second support and the two second mounting portions. The vehicle hydrogen storage structure also includes a strap that passes through the gap. A portion of the strap abuts against the side of the second support facing away from the hydrogen tank, and another portion of the strap abuts against the hydrogen tank, causing the hydrogen tank and the second support to tend to move closer together.

[0015] In some embodiments, the second bracket further includes a plurality of second reinforcing plates and a plurality of second energy-absorbing boxes. At least one second reinforcing plate is connected between the second support portion and the second mounting portion. The second reinforcing plate is provided with a second hollow hole. At least one second energy-absorbing box is connected between each second mounting portion and the connected second reinforcing plate.

[0016] In some embodiments, the buffer includes a plurality of elastic elements and a plurality of gaskets. The plurality of elastic elements are arranged at circumferential intervals along the hydrogen tank. One end of each elastic element is connected to the inner side of the protective frame, and the other end is connected to a gasket for abutting against the hydrogen tank.

[0017] In some embodiments, the underbody frame further includes a third crossbeam and two inclined beams. The third crossbeam is connected between the two longitudinal beams and is located on the side of the second crossbeam facing away from the first crossbeam. The third crossbeam, the second crossbeam, and the two longitudinal beams form a second closed loop frame. The two inclined beams are located within the second closed loop frame. One end of each inclined beam is connected to the second crossbeam, and the other end is connected to the connection between the third crossbeam and the longitudinal beam on the corresponding side.

[0018] In some embodiments, the vehicle hydrogen storage structure further includes a tailgate frame, two connecting beams, two bridging beams, and two wheel arch beams. A portion of the tailgate frame connects to a first crossbeam and forms a third closed loop with the first crossbeam. Another portion of the tailgate frame is located on opposite sides of the first crossbeam and connects to the corresponding longitudinal beams. The two connecting beams are respectively connected to the portions of the tailgate frame on opposite sides of the first crossbeam. One end of each connecting beam connects to the third closed loop frame, and each connecting beam forms a fourth closed loop frame with the tailgate frame on the side facing away from the longitudinal beam. The two bridging beams are respectively connected to the portions of the tailgate frame on opposite sides of the first crossbeam. Each bridging beam also connects to the side of the corresponding connecting beam facing the longitudinal beam. The two wheel arch beams are respectively located on the portions of the tailgate frame on opposite sides of the first crossbeam. Each wheel arch beam connects to the corresponding longitudinal beam and bridging beam. The left and right sides of the third closed loop frame, together with the corresponding bridging beams, wheel arch beams, and longitudinal beams, form a fifth closed loop frame.

[0019] One embodiment of this application provides a vehicle, which includes a hydrogen tank and a vehicle hydrogen storage structure as described in any of the above embodiments, wherein the vehicle hydrogen storage structure fixes the hydrogen tank. Attached Figure Description

[0020] Figure 1 This is a perspective view of the vehicle hydrogen storage structure and hydrogen tank from the rear side in one embodiment of this application.

[0021] Figure 2 for Figure 1 A three-dimensional view of the front side of the vehicle's hydrogen storage structure.

[0022] Figure 3for Figure 1 A bottom view of the vehicle's hydrogen storage structure and hydrogen tank.

[0023] Figure 4 for Figure 1 The vehicle's hydrogen storage structure and hydrogen tank are shown in a cross-sectional view along line AA.

[0024] Figure 5 for Figure 1 A three-dimensional view of the second crossbeam, third crossbeam, inclined beam, first bracket, and second bracket of the vehicle's hydrogen storage structure.

[0025] Figure 6 for Figure 1 A three-dimensional view of the connecting beam of the vehicle's hydrogen storage structure.

[0026] Figure 7 for Figure 1 A three-dimensional view of the longitudinal beams of the vehicle's hydrogen storage structure.

[0027] Figure 8 for Figure 7 Top view of the longitudinal beam.

[0028] Figure 9 for Figure 1 A 3D view of the crash beams and energy-absorbing components of the vehicle's hydrogen storage structure.

[0029] Figure 10 for Figure 1 A three-dimensional diagram of the first support, second support, protective frame, straps, and hydrogen tank of the vehicle's hydrogen storage structure.

[0030] Figure 11 for Figure 10 The structure in the diagram is shown in a cross-sectional view along BB.

[0031] Explanation of main component symbols

[0032] 100. Vehicle hydrogen storage structure; 200. Hydrogen tank;

[0033] 10. Lower body frame; 11. First crossbeam; 111. Anti-collision beam; 112. Energy-absorbing component; 113. Hollow cavity; 114. Connecting rib; 115. Guide groove; 12. Second crossbeam; 13. Longitudinal beam; 131. Longitudinal beam groove; 132. Fourth reinforcing member; 133. Fifth reinforcing member; 14. First closed-loop frame; 15. Third crossbeam; 16. Inclined beam; 17. Second closed-loop frame; 18. First reinforcing member; 19. Crossbeam groove;

[0034] 101. Tailgate frame; 102. Third closed-loop frame; 103. Connecting beam; 1031. Connecting beam groove; 1032. Second reinforcing member; 1033. Inner side plate; 1034. Outer side plate; 1035. First end connecting plate; 1036. Middle connecting plate; 1037. Second end connecting plate; 104. Fourth closed-loop frame; 105. Bridging beam; 1051. Bridging beam groove; 1052. Third reinforcing member; 1053. First connecting part; 1054. Middle part; 1055. Second connecting part; 106. Wheel wrap beam; 107. Fifth closed-loop frame;

[0035] 20. First bracket; 21. Rotary seat; 22. First support part; 23. Suspension part; 24. First mounting part; 25. First reinforcing plate; 26. First energy-absorbing box;

[0036] 30. Protective frame; 31. Buffer; 311. Elastic element; 312. Gasket;

[0037] 40. Second bracket; 41. Second support part; 42. Second mounting part; 43. Gap; 44. Second reinforcing plate; 441. Second perforated hole; 45. Second energy-absorbing box;

[0038] 50. Straps. Detailed Implementation

[0039] The technical solution of this application will now be described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments.

[0040] It should be noted that when an element is considered to be "connected to" or "located on" another element, it can be directly connected to the other element or may have an element centrally located. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "fixed," etc., should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. The terms "first," "second," etc., are only used to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary / secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified. The shape descriptions of length, thickness, width, etc., in the embodiments of this application are merely illustrative and should not constitute any absolute limitation on this application. The terms "vertical" and "parallel" are used to describe the ideal state between two components. In actual production or use, there may be approximately vertical or parallel states, which are not absolute geometric descriptions. The terms “comprising,” “having,” and “equipped with,” and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion.

[0041] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. Where there is no conflict, the various embodiments in this application can be combined with each other.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0043] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] like Figures 1 to 3 As shown, in one embodiment of this application, a vehicle hydrogen storage structure 100 and a vehicle are provided. The vehicle includes the vehicle hydrogen storage structure 100 and a hydrogen tank 200. The hydrogen tank 200 is fixed to the vehicle hydrogen storage structure 100 and is used to store hydrogen to provide energy to the vehicle.

[0045] The vehicle hydrogen storage structure 100 includes a lower body frame 10, which serves as the base of the vehicle. The front-rear direction of the lower body frame 10 is the same as the front-rear direction when the vehicle is in motion (hereinafter referred to as the front-rear direction), the left-right direction is the same as the left-right direction when the vehicle is in motion (hereinafter referred to as the left-right direction), and the up-down direction is the same as the up-down direction when the vehicle is in motion (hereinafter referred to as the up-down direction). The lower body frame 10 includes a first crossbeam 11, a second crossbeam 12, and two longitudinal beams 13. The longitudinal beams 13 extend in the front-rear direction, and the first crossbeam 11 and the second crossbeam 12 extend in the left-right direction and connect to the two longitudinal beams 13. The first crossbeam 11, the second crossbeam 12, and the two longitudinal beams 13 form a first closed-loop frame 14, in which the hydrogen tank 200 is housed.

[0046] like Figures 2 to 4 As shown, the vehicle hydrogen storage structure 100 also includes a first support 20. One end of the first support 20 is connected to a first crossbeam 11, and the other end is connected to a second crossbeam 12. A rotating seat 21 is provided between the two ends of the first support 20. The rotating seat 21 is connected to the hydrogen tank 200, so that the hydrogen tank 200 can rotate relative to the lower vehicle frame 10 about an axis parallel to the vertical direction.

[0047] The vehicle hydrogen storage structure 100 also includes multiple protective frames 30, and each protective frame 30 has a buffer 31 on its inner side. The buffer 31 abuts against the outer surface of the hydrogen tank 200, and the hydrogen tank 200 is supported by the buffer 31. The buffer 31 allows the hydrogen tank 200 to move relative to the protective frame 30.

[0048] The vehicle hydrogen storage structure 100 also includes a plurality of second supports 40, one end of each second support 40 being connected to a first crossbeam 11 and the other end being connected to a second crossbeam 12, and each second support 40 being used to support a corresponding protective frame 30. Optionally, each second support 40 is welded to each protective frame 30 in a one-to-one correspondence.

[0049] The vehicle hydrogen storage structure 100 provided in this application, when in a collision, accommodates the hydrogen tank 200 in the first closed-loop frame 14, with the first closed-loop frame 14 serving as a rigid structure, so that the hydrogen tank 200 can be protected by the rigid structure and withstand the impact.

[0050] The hydrogen tank 200 is also connected by a rotating seat 21. The rotating seat 21 is a soft structure, which allows the hydrogen tank 200 to rotate relative to the lower vehicle frame 10 around an axis parallel to the vertical direction. In the event of a collision, the hydrogen tank 200 can increase energy absorption by rotating, thereby reducing the force on the hydrogen tank 200.

[0051] The hydrogen tank 200 is also supported by the buffer 31 inside the protective frame 30, so that the hydrogen tank 200 can move relative to the lower body frame 10 when it is impacted. The buffer 31, as a soft structure, can play a buffering role and increase energy absorption to reduce the force on the hydrogen tank 200.

[0052] Furthermore, the first support 20 and multiple second supports 40 are connected between the first crossbeam 11 and the second crossbeam 12, so that multiple force transmission paths are formed between the first crossbeam 11 and the second crossbeam 12. In the event of a collision, the force on the first crossbeam 11 can be transmitted to the second crossbeam 12 through multiple paths, thereby dispersing the force on the first closed-loop frame 14, reducing the deformation of the first closed-loop frame 14, and thus reducing the impact on the hydrogen tank 200 after the first closed-loop frame 14 deforms significantly, so as to protect the hydrogen tank 200 in the first closed-loop frame 14.

[0053] In summary, the vehicle hydrogen storage structure 100 provided in this application, through the combination of soft and hard structures, can increase energy absorption and reduce deformation when subjected to a collision, thereby improving the safety of the hydrogen tank 200 and avoiding the defects such as increased structural weight caused by a purely hard impact resistance method.

[0054] Preferably, the first crossbeam 11 is located behind the lower body frame 10, and the first closed-loop frame 14 is located at the rear of the vehicle. The vehicle hydrogen storage structure 100 protects the hydrogen tank 200 in the event of a rear-end collision.

[0055] For example, when a vehicle is subjected to a full-overlap rear-end collision, that is, when the rear of the vehicle is almost completely in contact with the obstacle and the collision direction is basically towards the front of the vehicle, the first closed-loop frame 14 acts as a rigid structure to deform and absorb energy; at the same time, the first support 20 and multiple second supports 40 act as soft structures to deform and absorb energy, thereby reducing the deformation of the first closed-loop frame 14; at the same time, the buffer 31 acts as a soft structure to deform and absorb energy, thereby buffering the hydrogen tank 200; and if the hydrogen tank 200 is torsional, the rotating seat 21 acts as a soft structure to allow the hydrogen tank 200 to rotate, thereby offsetting at least part of the torque and reducing the deformation of the hydrogen tank 200.

[0056] For example, when the vehicle is subjected to an offset collision, that is, when the rear of the vehicle does not fully contact the obstacle, but only partially overlaps or collides at a certain angle, the hydrogen tank 200 will twist. At this time, the rotating seat 21 acts as a soft structure to allow the hydrogen tank 200 to rotate, thereby offsetting at least part of the torque and reducing the deformation of the hydrogen tank 200. At the same time, the first closed-loop frame 14 acts as a hard structure to absorb deformation energy. Meanwhile, the first bracket 20 and multiple second brackets 40 act as soft structures to absorb deformation energy, thereby reducing the deformation of the first closed-loop frame 14. At the same time, the buffer 31 acts as a soft structure to absorb deformation energy, thereby buffering the hydrogen tank 200.

[0057] Preferably, at least one second bracket 40 is provided on each of the left and right sides of the first bracket 20, which not only allows the left and right sides of the hydrogen tank 200 to be supported by the buffer 31 of the protective frame 30 to improve the stability of the hydrogen tank 200, but also makes the rotating seat 21 on the first bracket 20 closer to the center of the hydrogen tank 200 to more efficiently counteract the torque of the hydrogen tank 200.

[0058] As an example, there are two second supports 40, and correspondingly, there are also two protective frames 30. A second support 40 is provided on each of the left and right sides of the first support 20. The two protective frames 30 are respectively located at the left and right ends of the hydrogen tank 200. The first support 20 is located in the middle of the hydrogen tank 200. The axis of rotation of the rotating seat 21 passes through the center of the hydrogen tank 200.

[0059] In some embodiments, such as Figure 2 , Figure 3 and Figure 5 As shown, the lower body frame 10 also includes a third crossbeam 15 and two diagonal beams 16. The third crossbeam 15 extends in the left-right direction and connects to two longitudinal beams 13. The third crossbeam 15 is located on the side of the second crossbeam 12 facing away from the first crossbeam 11. The third crossbeam 15, the second crossbeam 12, and the two longitudinal beams 13 form a second closed-loop frame 17. The second closed-loop frame 17 can absorb energy through deformation during an impact, thereby reducing the deformation of the first closed-loop frame 14. The two diagonal beams 16 are located inside the second closed-loop frame 17. One end of each diagonal beam 16 is connected to the second crossbeam 12, and the other end is connected to the connection between the third crossbeam 15 and the corresponding longitudinal beam 13. The two diagonal beams 16 are used to transfer the force on the second crossbeam 12 to the longitudinal beams 13 on both sides. The force transferred to the longitudinal beams 13 will be transferred to the front of the vehicle, thereby reducing the deformation of the first closed-loop frame 14 and even the entire vehicle.

[0060] In some embodiments, such as Figure 2 , Figure 3 and Figure 5 As shown, the lower body frame 10 also includes multiple first reinforcing members 18. The second crossbeam 12 and the third crossbeam 15 are each provided with a first reinforcing member 18 at the position connecting the two inclined beams 16. The first reinforcing member 18 is used to improve the energy absorption at the connection between the inclined beam 16 and the second crossbeam 12 and the third crossbeam 15. In this way, the force on the second crossbeam 12 can be guided to be transmitted more to the longitudinal beams 13 on both sides through the inclined beams 16, further reducing the deformation of the first closed-loop frame 14 and even the entire vehicle.

[0061] In some embodiments, such as Figure 2 , Figure 3 and Figure 5 As shown, both the second crossbeam 12 and the third crossbeam 15 are provided with crossbeam grooves 19. Each first reinforcing member 18 has a portion located outside the crossbeam groove 19 and connected to the corresponding second crossbeam 12 or third crossbeam 15. Each first reinforcing member 18 also has a portion located inside the crossbeam groove 19 and connected to the groove wall of the crossbeam groove 19. In this way, each first reinforcing member 18 can form a hollow energy-absorbing box with the second crossbeam 12 or the third crossbeam 15, thereby guiding more of the force on the second crossbeam 12 to be transmitted to the longitudinal beams 13 on both sides through the inclined beam 16.

[0062] Optionally, the crossbeam grooves 19 of the second crossbeam 12 and the third crossbeam 15 are arranged upward and extend in the left and right direction. The portion of each first reinforcing member 18 outside the crossbeam groove 19 covers the crossbeam groove 19 in its area. The portions on the left and right sides of each first reinforcing member 18 are recessed into the crossbeam groove 19 and connected to the groove wall in the front and rear direction of the crossbeam groove 19, and / or connected to the bottom wall of the crossbeam groove 19. In this way, a complete or hollow energy-absorbing box can be formed as needed, as long as the force of the second crossbeam 12 can be guided to the inclined beam 16.

[0063] In some embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the vehicle hydrogen storage structure 100 also includes a tailgate frame 101. A portion of the tailgate frame 101 is located behind the lower body frame 10, and another portion of the tailgate frame 101 is located on the left and right sides of the lower body frame 10. The portions of the tailgate frame 101 located on the left and right sides of the lower body frame 10 are respectively connected to the longitudinal beams 13 on the corresponding sides. The portion of the tailgate frame 101 located behind the lower body frame 10 is connected to the first crossbeam 11 and forms a third closed-loop frame 102 with the first crossbeam 11. The third closed-loop frame 102 can absorb energy through deformation during an impact, so that the force on the first crossbeam 11 can be transferred to the third closed-loop frame 102, thereby further reducing the deformation of the first closed-loop frame 14 and protecting the hydrogen tank 200 in the first closed-loop frame 14.

[0064] Optionally, the tailgate frame 101 located behind the lower body frame 10 is a rectangular frame, and the tail ends of the two longitudinal beams 13 are connected to the bottom edge of the rectangular frame. The bottom edge of the rectangular frame forms the first crossbeam 11, that is, the first crossbeam 11 is part of the tailgate frame 101.

[0065] The lower body frame 10 also includes two connecting beams 103, which extend in the front-rear direction and are located on the left and right sides of the tailgate frame 101, respectively. The rear end of each connecting beam 103 is connected to a third closed-loop frame 102. Each connecting beam 103 forms a fourth closed-loop frame 104 with the tailgate frame 101 on the side opposite to the longitudinal beam 13. That is, a fourth closed-loop frame 104 is connected to each of the left and right sides of the third closed-loop frame 102. In this way, the connecting beams 103 can transfer the force of the third closed-loop frame 102 to the fourth closed-loop frame 104. The fourth closed-loop frame 104 can absorb energy through deformation, so that the force of the third closed-loop frame 102 can be transferred to the fourth closed-loop frames 104 on both sides, thereby reducing the deformation of the third closed-loop frame 102, and further reducing the deformation of the first closed-loop frame 14, so as to protect the hydrogen tank 200 in the first closed-loop frame 14.

[0066] like Figure 1 , Figure 2 and Figure 4As shown, the lower body frame 10 also includes two bridging beams 105 and two wheel arch beams 106. The two bridging beams 105 and the two wheel arch beams 106 are respectively connected to the left and right sides of the tailgate frame 101. Each bridging beam 105 is also connected to the lower part of the connecting beam 103 on the corresponding side. Each wheel arch beam 106 is connected to the longitudinal beam 13 and the bridging beam 105 on the same side. The left and right sides of the third closed loop frame 102 and the bridging beams 105, wheel arch beams 106, and longitudinal beams 13 on the corresponding sides form a fifth closed loop frame 107. That is, the fifth closed-loop frame 107 is located below the fourth closed-loop frame 104 on the same side. In this way, the force on the connecting beam 103 can be transmitted down to the longitudinal beam 13 through the bridging beam 105 and the wheel-wrapping beam 106 in sequence, so that the force on the fourth closed-loop frame 104 can be transmitted to the fifth closed-loop frame 107. The fifth closed-loop frame 107 can absorb energy through deformation, thereby reducing the deformation of the fourth closed-loop frame 104, the third closed-loop frame 102, and the first closed-loop frame 14 in sequence, so as to protect the hydrogen tank 200 in the first closed-loop frame 14.

[0067] Preferably, the lower end of the wheel-wrapping beam 106 is connected to the connection between the longitudinal beam 13 and the second cross beam 12. In this way, the wheel-wrapping beam 106 can transfer the force of the connecting beam 103 to the second cross beam 12, and then to the longitudinal beam 13 through the inclined beam 16, forcing the vehicle to move forward after a rear-end collision, reducing the deformation of the first closed-loop frame 14 and even the entire vehicle.

[0068] In summary, the vehicle hydrogen storage structure 100 can form a seven-ring cage-like structure through the first closed-loop frame 14, the second closed-loop frame 17, the third closed-loop frame 102, two fourth closed-loop frames 104, and two fifth closed-loop frames 107. This increases the force transmission path and can absorb and disperse the collision energy as much as possible when subjected to a collision, reducing local deformation around the hydrogen tank 200 and protecting the hydrogen tank 200.

[0069] In some embodiments, such as Figure 1 , Figure 4 and Figure 6 As shown, each connecting beam 103 has a connecting beam groove 1031, and a second reinforcing member 1032 is provided inside the connecting beam groove 1031. Each bridging beam 105 has a bridging beam groove 1051, and a third reinforcing member 1052 is provided inside the bridging beam groove 1051. The second reinforcing member 1032, the third reinforcing member 1052 and the wheel-wrapping beam 106 on the same side are arranged sequentially from top to bottom. In this way, the second reinforcing member 1032 and the third reinforcing member 1052 can form a more efficient force transmission path to guide the force on the connecting beam 103 from the second reinforcing member 1032 to the third reinforcing member 1052, and then to the wheel-wrapping beam 106.

[0070] In some embodiments, such as Figure 1 , Figure 4 and Figure 6As shown, the second reinforcing member 1032 includes an inner side plate 1033, an outer side plate 1034, a first end connecting plate 1035, a middle connecting plate 1036, and a second end connecting plate 1037 extending along the length direction of the connecting beam 103. The inner side plate 1033 and the outer side plate 1034 are arranged opposite to each other. The first end connecting plate 1035 connects the top of the inner side plate 1033 and the outer side plate 1034, and the second end connecting plate 1037 connects the bottom of the inner side plate 1033 and the outer side plate 1034. The middle connecting plate 1036 is located at... An inner plate 1033 and an outer plate 1034 are connected between the first end connecting plate 1035 and the second end connecting plate 1037. The inner plate 1033 and the outer plate 1034 are inclined relative to each other, and the distance between the inner plate 1033 and the outer plate 1034 gradually increases from top to bottom. In this way, the second reinforcing member 1032 forms a double-layer hollow energy-absorbing box, and can guide the force of the connecting beam 103 from the narrower first end connecting plate 1035 to the wider second end connecting plate 1037.

[0071] Optionally, the second reinforcing member 1032 is made of a plate by roll-welding from both sides towards the middle.

[0072] In some embodiments, such as Figure 1 , Figure 4 and Figure 6 As shown, the third reinforcing member 1052 includes a first connecting part 1053, a middle part 1054, and a second connecting part 1055 connected in sequence. The second connecting part 1055 is located below the first connecting part 1053. Both the first connecting part 1053 and the second connecting part 1055 are connected to the bridging beam 105. The first connecting part 1053 is located directly below the second reinforcing member 1032, and the second connecting part 1055 is located directly above the connection between the wheel-wrapping beam 106 and the bridging beam 105. In this way, the force on the second reinforcing member 1032 can be more concentratedly transmitted to the wheel-wrapping beam 106 through the middle part 1054.

[0073] Optionally, the third reinforcement 1052 is made from a sheet metal by bending.

[0074] In some embodiments, such as Figure 1 , Figure 7 and Figure 8As shown, each longitudinal beam 13 has a longitudinal beam groove 131 along its length. A fourth reinforcing member 132 and multiple fifth reinforcing members 133 are provided in the longitudinal beam groove 131. The fourth reinforcing member 132 fits against the groove wall of the longitudinal beam groove 131. Multiple fifth reinforcing members 133 are located in the longitudinal beam groove 131 and are spaced apart along the length of the longitudinal beam 13. Each fifth reinforcing member 133 is connected to the fourth reinforcing member 132. Each pair of adjacent fifth reinforcing members 133 are relatively inclined to each other. The fourth reinforcing member 132 and multiple fifth reinforcing members 133 are used to strengthen the structural strength of the longitudinal beam 13, so that the longitudinal beam 13 can withstand greater impact force, thereby forcing the vehicle to move forward after a rear-end collision, reducing the deformation of the first closed-loop frame 14 and even the entire vehicle.

[0075] Optionally, the longitudinal beam groove 131 has a rectangular cross-section and has a bottom surface and two side surfaces perpendicular to the bottom surface. The fourth reinforcing member 132 is attached to at least a portion of the bottom surface and at least a portion of the two side surfaces, thereby strengthening the connection between the bottom surface and the two side surfaces. Each fifth reinforcing member 133 is plate-shaped, and the edge of each fifth reinforcing member 133 is welded to the fourth reinforcing member 132. It can also be welded to the side surfaces of the bottom surface of the longitudinal beam groove 131 that are not attached to the fourth reinforcing member 132. In this way, the longitudinal beam 13 can be supported by multiple fifth reinforcing members 133 in the longitudinal beam groove 131, reducing the phenomenon of the longitudinal beam 13 deforming into the longitudinal beam groove 131 and improving the structural strength of the longitudinal beam 13.

[0076] In some embodiments, such as Figure 1 and Figure 9 As shown, the first crossbeam 11 is connected to the tail ends of the two longitudinal beams 13. A crash beam 111 and multiple energy-absorbing components 112 are connected to the rear side of the first crossbeam 11. The multiple energy-absorbing components 112 are located between the first crossbeam 11 and the crash beam 111. The crash beam 111 has a hollow cavity 113 along its length, and at least one connecting rib 114 is provided within the hollow cavity 113, making the crash beam 111 form a multi-layered energy-absorbing structure to improve its energy absorption capacity. Each energy-absorbing component 112 is box-shaped, and its edge extending in the front-rear direction has an induction groove 115. The induction groove 115 is used to guide the energy-absorbing component 112 to compress and deform in the front-rear direction to improve its energy absorption capacity and reduce the force transmitted to the first crossbeam 11 during a rear-end collision.

[0077] Optionally, the anti-collision beam 111 is provided with two energy-absorbing components 112 near its left and right ends. That is, the anti-collision beam 111 is provided with two energy-absorbing components 112 near its left end and two energy-absorbing components 112 near its right end. Among the two energy-absorbing components 112 at the same end, since the anti-collision beam 111 has an arc and protrudes backward, the inner energy-absorbing component 112 has a larger volume and can play the main energy-absorbing role, while the outer energy-absorbing component 112 has a smaller volume and can play the auxiliary energy-absorbing role. In this way, compared with a single energy-absorbing component 112, two energy-absorbing components 112 can improve energy absorption and reduce the force transmitted to the first crossbeam 11 during a rear-end collision.

[0078] In some embodiments, such as Figure 5 , Figure 10 and Figure 11 As shown, the first support 20 also includes a first support part 22, two suspension parts 23 and two first mounting parts 24. The rotating seat 21 is disposed on the first support part 22. Each end of the first support part 22 is connected to a suspension part 23. The end of each suspension part 23 away from the first support part 22 is connected to a first mounting part 24. One first mounting part 24 is mounted on the first crossbeam 11 and the other first mounting part 24 is mounted on the second crossbeam 12. The distance between the two suspension parts 23 gradually increases from the first support part 22 toward the hydrogen tank 200, that is, the distance between the two suspension parts 23 gradually increases from bottom to top, so that the first support 20 as a whole is closer to the hydrogen tank 200, reducing the space occupied by the first support 20.

[0079] Optionally, the first support portion 22 is configured to be horizontal and extend in the front-to-back direction; the two suspension portions 23 are configured to be inclined or arc-shaped; and the first mounting portion 24 is mounted to the first crossbeam 11 or the second crossbeam 12 by welding.

[0080] In some embodiments, such as Figure 5 , Figure 10 and Figure 11 As shown, the first bracket 20 also includes a plurality of first reinforcing plates 25. At least one first reinforcing plate 25 is connected between the connected suspension part 23 and the first mounting part 24. The first reinforcing plate 25 is used to improve the connection strength between the suspension part 23 and the first mounting part 24.

[0081] Optionally, the first reinforcing plate 25 may be provided with multiple first hollow holes (not shown in the figure), which can reduce weight and increase the local deformation of the first reinforcing plate 25 after the collision, thereby improving the energy absorption of the first support 20 and reducing the deformation of the first support 20 to protect the hydrogen tank 200.

[0082] In some embodiments, the first support 20 further includes a plurality of first energy-absorbing boxes 26. At least one first energy-absorbing box 26 is connected between each first mounting part 24 and the connected first reinforcing plate 25. The first energy-absorbing box 26 is hollow inside and is used to increase local deformation after a collision, thereby improving the energy absorption of the first support 20 and reducing the deformation of the first support 20 to protect the hydrogen tank 200.

[0083] Optionally, a first reinforcing plate 25 is connected to the left and right sides of the connected suspension part 23 and the first mounting part 24 respectively. A first energy-absorbing box 26 is provided between the two first reinforcing plates 25 and the first mounting part 24. The top surface of the first energy-absorbing box 26 is welded to the first mounting part 24, and the bottom and side surfaces of the first energy-absorbing box 26 are welded to the first reinforcing plates 25. By using two first reinforcing plates 25 and one first energy-absorbing box 26, not only can the number of parts be reduced to simplify the structure, but the structural strength of the first bracket 20 can also be improved and the energy absorption of the first bracket 20 can be enhanced.

[0084] In some embodiments, such as Figure 5 , Figure 10 and Figure 11 As shown, each second bracket 40 includes a second support portion 41 and two second mounting portions 42. Each end of the second support portion 41 is connected to a second mounting portion 42. One second mounting portion is mounted on the first crossbeam 11, and the other second mounting portion 42 is mounted on the second crossbeam 12. The second support portion 42 and the protective frame 30 extend circumferentially along the hydrogen tank 200. Each second support portion 41 supports one protective frame 30. By extending both the second support portion 42 and the protective frame 30 circumferentially along the hydrogen tank 200, their shapes are similar, thereby increasing the contact surface between them and improving the support stability of the second support portion 42 on the protective frame 30.

[0085] In some embodiments, such as Figure 5 and Figure 10 As shown, the vehicle hydrogen storage structure 100 also includes multiple straps 50, each strap 50 binding a corresponding second bracket 40 and hydrogen tank 200 to increase the force of the hydrogen tank 200 against the buffer 31, so that the hydrogen tank 200 and the protective frame 30 are interference fit, reducing the shaking of the hydrogen tank 200.

[0086] In this design, a gap 43 is provided at the connection between the second support part 41 and the two second mounting parts 42. The strap 50 passes through the gap 43. A part of the strap 50 abuts against the side of the second support part 41 facing away from the hydrogen tank 200. That is, a part of the strap 60 is located below the second support part 41 and applies an upward force to the second support part 41, while the other part of the strap 60 is located above the hydrogen tank 200 and applies a downward force to the hydrogen tank 200, so that the hydrogen tank 200 and the second support part 41 tend to move closer together. In this way, the hydrogen tank 200 and the protective frame 30 squeeze the buffer member 31 in the middle, thereby increasing the force of the hydrogen tank 200 against the buffer member 31 and reducing the shaking of the hydrogen tank 200.

[0087] In some embodiments, such as Figure 5 and Figure 10 As shown, the second bracket 40 also includes a plurality of second reinforcing plates 44. At least one second reinforcing plate 44 is connected between the second support portion 42 and the second mounting portion 43. The second reinforcing plate 44 is used to improve the connection strength between the second support portion 42 and the second mounting portion 43.

[0088] Optionally, the second reinforcing plate 44 is provided with a second hollow hole 441, which can reduce weight and increase the local deformation of the second reinforcing plate 44 after the collision, thereby improving the energy absorption of the second support 40 and reducing the deformation of the second support 40 to protect the hydrogen tank 200.

[0089] In some embodiments, the second support 40 further includes a plurality of second energy-absorbing boxes 45. At least one second energy-absorbing box 45 is connected between each second mounting part 43 and the connected second reinforcing plate 44. The second energy-absorbing box 45 is hollow inside and is used to increase local deformation after a collision, thereby improving the energy absorption of the second support 40 and reducing the deformation of the second support 40 to protect the hydrogen tank 200.

[0090] Optionally, a second reinforcing plate 44 is connected to the left and right sides of the second mounting part 43 and the second reinforcing plate 44 respectively. A second energy-absorbing box 45 is provided between the two second reinforcing plates 44 and the second mounting part 43. The top surface of the second energy-absorbing box 45 is welded to the second mounting part 43, and the bottom and side surfaces of the second energy-absorbing box 45 are welded to the second reinforcing plate 44. By using two second reinforcing plates 44 and one second energy-absorbing box 45, not only can the number of parts be reduced to simplify the structure, but the structural strength of the second bracket 40 and the energy absorption performance of the second bracket 40 can also be improved.

[0091] In some embodiments, such as Figure 10 and Figure 11As shown, the buffer 31 includes multiple elastic elements 311 and multiple gaskets 312. The multiple elastic elements 311 are arranged at intervals along the circumference of the hydrogen tank 200. One end of each elastic element 311 is connected to the inner side of the protective frame 30, and the other end is connected to a corresponding gasket 312. The gasket 312 is used to abut against the hydrogen tank 200, so that the hydrogen tank 200 and the protective frame 30 are interference-fitted, reducing the shaking of the hydrogen tank 200. When subjected to impact, the elastic element 311 deforms to absorb energy, reducing the force on the hydrogen tank 200. For example, the elastic element 311 can be a spring or the like.

[0092] Optionally, there are two protective frames 30 located at the left and right ends of the hydrogen tank 200, respectively. Since the head end of the hydrogen tank 200 needs to be equipped with an inlet valve and an inlet pipe, while the tail end does not, the protective frame 30 located at the head end is in a complete ring shape and surrounds the hydrogen tank 200, covering the head end of the hydrogen tank 200 in 360° to protect the inlet valve and inlet pipe. At this time, multiple buffers 31 are evenly distributed on the inner side of the protective frame 30 at 360°, so that the head end of the hydrogen tank 200 is interference-fitted with the protective frame 30.

[0093] The protective frame 30 at the tail end does not need to cover the hydrogen tank 200, so the protective frame 30 at the tail end can be set as a semi-ring to cover the tail end of the hydrogen tank 200 at 180°, which can reduce weight. At this time, the tail end of the hydrogen tank 200 is connected to the buffer 31 inside the protective frame 30 by the strap 60.

[0094] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A vehicle hydrogen storage structure, characterized in that, include: The lower body frame includes a first crossbeam, a second crossbeam, and two longitudinal beams. The first crossbeam and the second crossbeam are connected between the two longitudinal beams. The first crossbeam, the second crossbeam, and the two longitudinal beams form a first closed loop frame, which is used to accommodate the hydrogen tank. A first support, one end of which is connected to the first crossbeam and the other end of which is connected to the second crossbeam, and a rotating seat is provided between the two ends of the first support. The rotating seat is connected to the hydrogen tank and is used to enable the hydrogen tank to rotate relative to the lower vehicle frame. Multiple protective frames, each with an inner buffer member that abuts against the hydrogen tank, the hydrogen tank being supported by the buffer member and movable relative to the protective frame; and Multiple second supports, one end of each second support is connected to the first crossbeam and the other end is connected to the second crossbeam, and each second support supports one of the protective frames.

2. The vehicle hydrogen storage structure as described in claim 1, characterized in that: The first bracket includes a first support part, two suspension parts and two first mounting parts. The rotating seat is disposed on the first support part. Each end of the first support part is connected to one of the suspension parts. The end of each suspension part away from the first support part is connected to one of the first mounting parts. One of the first mounting parts is mounted on the first crossbeam and the other of the first mounting parts is mounted on the second crossbeam. The distance between the two suspension parts gradually increases from the first support part toward the hydrogen tank.

3. The vehicle hydrogen storage structure as described in claim 2, characterized in that: The first bracket also includes a plurality of first reinforcing plates and a plurality of first energy-absorbing boxes. At least one first reinforcing plate is connected between the connected suspension part and the first mounting part. The first reinforcing plate is provided with a first hollow hole. At least one first energy-absorbing box is connected between each first mounting part and the connected first reinforcing plate.

4. The vehicle hydrogen storage structure as described in claim 1, characterized in that: Each of the second supports includes a second support portion and two second mounting portions. Each end of the second support portion is connected to a second mounting portion. One second mounting portion is mounted on the first crossbeam, and the other second mounting portion is mounted on the second crossbeam. The second support portion and the protective frame extend circumferentially along the hydrogen tank, and each second support portion is used to support one of the protective frames.

5. The vehicle hydrogen storage structure as described in claim 4, characterized in that: The connection between the second support and the two second mounting parts is provided with a gap. The vehicle hydrogen storage structure also includes a strap that passes through the gap. A part of the strap abuts against the side of the second support facing away from the hydrogen tank, and the other part of the strap abuts against the hydrogen tank, so that the hydrogen tank and the second support tend to move closer together.

6. The vehicle hydrogen storage structure as described in claim 4, characterized in that: The second bracket also includes multiple second reinforcing plates and multiple second energy-absorbing boxes. At least one second reinforcing plate is connected between the second support part and the second mounting part. The second reinforcing plate is provided with a second hollow hole. At least one second energy-absorbing box is connected between each second mounting part and the connected second reinforcing plate.

7. The vehicle hydrogen storage structure as described in claim 1, characterized in that: The buffer includes multiple elastic elements and multiple gaskets. The multiple elastic elements are arranged at intervals along the circumference of the hydrogen tank. One end of each elastic element is connected to the inner side of the protective frame, and the other end is connected to a gasket. The gasket is used to abut against the hydrogen tank.

8. The vehicle hydrogen storage structure as described in claim 1, characterized in that, The lower body frame also includes: A third crossbeam, connecting the two longitudinal beams, is located on the side of the second crossbeam opposite to the first crossbeam. The third crossbeam, the second crossbeam, and the two longitudinal beams form a second closed loop frame. Two inclined beams are located within the second closed-loop frame. One end of each inclined beam is connected to the second crossbeam, and the other end is connected to the connection between the third crossbeam and the longitudinal beam on the corresponding side.

9. The vehicle hydrogen storage structure as described in claim 1, characterized in that, The vehicle hydrogen storage structure also includes: A tailgate frame, a portion of which is connected to the first crossbeam and forms a third closed loop with the first crossbeam, and another portion of which is located on opposite sides of the first crossbeam and is respectively connected to the longitudinal beams on the corresponding sides. Two connecting beams are respectively connected to the tailgate frame on opposite sides of the first crossbeam. One end of each connecting beam is connected to the third closed-loop frame. Each connecting beam forms a fourth closed-loop frame with the tailgate frame on the side opposite to the longitudinal beam. Two bridging beams, each connecting to a portion of the tailgate frame on opposite sides of the first crossbeam, and each bridging beam also connecting to the corresponding side of the connecting beam facing the longitudinal beam; and Two wheel arch beams are located on opposite sides of the tailgate frame on the first crossbeam. Each wheel arch beam connects the longitudinal beam and the bridging beam on the corresponding side. The opposite sides of the third closed-loop frame, together with the bridging beam, the wheel arch beam, and the longitudinal beam on the corresponding side, form a fifth closed-loop frame.

10. A vehicle, characterized in that: The vehicle includes a hydrogen tank and a vehicle hydrogen storage structure as described in any one of claims 1 to 9, wherein the vehicle hydrogen storage structure secures the hydrogen tank.

Images