Vehicle hydrogen storage structure and vehicle
By designing the first closed-loop frame of the hard structure and the rotating seat and buffer of the soft structure in the vehicle hydrogen storage structure, combined with multiple force transmission paths, the safety problem of the hydrogen tank during collision is solved, and the energy absorption and safety of the structure is improved.
Patent Information
- Application Number
- CN202510687024.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2025-07-01
AI Technical Summary
The hydrogen tanks in hydrogen energy vehicles are prone to off-position and deformation during collision, resulting in hydrogen leakage, combustion and explosion, threatening the safety of occupants.
A vehicle hydrogen storage structure is designed, and the synergy between soft and hard structures is achieved by accommodating the hydrogen tank in a first closed loop frame of a hard structure and by combining a rotating seat, a buffer member and a number of force transmission paths to increase energy absorption and reduce deformation.
During collision, through the cooperation of soft and hard structures, energy absorption and deformation are increased, which avoids defects such as structural weight gain caused by pure hard impact, and improves the safety of the hydrogen tank.
Smart Images
Figure CN120229084A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicles, and particularly to a hydrogen storage structure for a vehicle and a vehicle. Background Art
[0002] Currently, in hydrogen energy vehicles, since hydrogen is a special energy medium, its safety is the most concerned and difficult problem to solve in hydrogen energy vehicles. The current common storage method is to store hydrogen in a hydrogen tank, arrange the hydrogen tank under the rear of the vehicle, and then transport the hydrogen to the fuel cell through a gas pipeline. In various collision scenarios, a rear-end collision of the vehicle is the most threatening working condition for the hydrogen tank. When the collision is severe, it will cause the hydrogen tank to be displaced and deformed, and then lead to hydrogen leakage, combustion and explosion, threatening the safety of the occupants.
[0003] In the related art, in order to improve the safety of the hydrogen tank, mainly the vehicle body structure is strengthened, but this is likely to cause problems such as an increase in the overall vehicle weight. And when the vehicle is collided, only the structure on the collision side deforms and absorbs energy, and the energy absorption effect is poor, resulting in a large force on the hydrogen tank. Summary of the Invention
[0004] In view of this, it is necessary to provide a hydrogen storage structure for a vehicle and a vehicle that can improve the safety of the hydrogen tank.
[0005] In an embodiment of the present application, a hydrogen storage structure for a vehicle is provided, which includes a lower vehicle body frame, a first bracket, a plurality of protection frames and a plurality of second brackets. The lower vehicle body frame includes a first cross beam, a second cross beam and two longitudinal beams. The first cross beam and the second cross beam are connected between the two longitudinal beams. The first cross beam, the second cross beam and the two longitudinal beams enclose a first closed-loop frame for accommodating the hydrogen tank. One end of the first bracket is connected to the first cross beam, and the other end is connected to the second cross beam. A rotating seat is provided between the two ends of the first bracket, and the rotating seat is connected to the hydrogen tank. The rotating seat is used to enable the hydrogen tank to rotate relative to the lower vehicle body frame. A buffer member is provided inside each protection frame, and the buffer member abuts against the hydrogen tank. The hydrogen tank is supported by the buffer member and can move relative to the protection frame. One end of each second bracket is connected to the first cross beam, and the other end is connected to the second cross beam. Each second bracket supports a corresponding protection frame.
[0006] When the hydrogen storage structure for a vehicle provided by the present application is collided, by accommodating the hydrogen tank in the first closed-loop frame formed by the first cross beam, the second cross beam and the two longitudinal beams, and the first closed-loop frame serves as a hard structure, the hydrogen tank can be protected by the hard structure to resist impacts; The hydrogen tank is also connected by the rotating seat. The rotating seat serves as a soft structure, enabling the hydrogen tank to rotate relative to the lower vehicle body frame around an axis parallel to the up-and-down direction of the lower vehicle body frame. During a collision, the hydrogen tank can increase energy absorption by rotating to reduce the force on the hydrogen tank; The hydrogen tank is also supported by a buffer member on the inner side of the protective frame, so that the hydrogen tank can move relative to the lower vehicle frame when it is hit. The buffer member, as a soft structure, can play a buffering role, increase energy absorption to reduce the force on the hydrogen tank; A first bracket and a plurality of second brackets are connected between the first crossbeam and the second crossbeam, so that a plurality of force transmission paths are formed between the first crossbeam and the second crossbeam. In the event of a collision, the force applied to the first crossbeam can be transmitted to the second crossbeam through the plurality of paths, thereby dispersing the force applied to the first closed-loop frame and reducing the deformation of the first closed-loop frame, thereby reducing the collision of the first closed-loop frame with the hydrogen tank after a significant deformation, thereby protecting the hydrogen tank in the first closed-loop frame.
[0007] In summary, the vehicle hydrogen storage structure provided in the present application can increase energy absorption and reduce deformation when subjected to a collision through the combination of soft and hard structures, thereby avoiding defects such as structural weight gain caused by a purely hard anti-collision approach and improving the safety of the hydrogen tank.
[0008] In some embodiments, the first bracket includes a first supporting portion, two hanging portions and two first mounting portions, the rotating seat is arranged on the first supporting portion, two ends of the first supporting portion are respectively connected to one of the hanging portions, one end of each of the hanging portions away from the first supporting portion is connected to one of the first mounting portions, one of the first mounting portions is mounted on the first beam, and the other first mounting portion is mounted on the second beam, and the distance between the two hanging portions gradually increases from the first supporting portion to the hydrogen tank.
[0009] In some embodiments, the first bracket also includes multiple first reinforcement plates and multiple first energy absorption boxes, at least one first reinforcement plate is connected between the connected suspension part and the first mounting part, the first reinforcement plate is provided with a first hollow hole, and at least one first energy absorption box is connected between each first mounting part and the connected first reinforcement plate.
[0010] In some embodiments, each second bracket includes a second supporting portion and two second mounting portions, the two ends of the second supporting portion are respectively connected to a second mounting portion, one second mounting portion is mounted on the first beam, and the other second mounting portion is mounted on the second beam, the second supporting portion and the protective frame extend along the circumference of the hydrogen tank, and each second supporting portion is used to support a protective frame.
[0011] In some embodiments, gaps are provided at the connections between the second support portion and the two second mounting portions, and the vehicle hydrogen storage structure also includes a strap, which passes through the gap, a portion of the strap abuts against the side of the second support portion facing away from the hydrogen tank, and another portion of the strap abuts against the hydrogen tank, so that the hydrogen tank and the second support portion tend to move closer to each other.
[0012] In some embodiments, the second bracket further includes a plurality of second reinforcing plates and a plurality of second energy absorption boxes. At least one of the second reinforcing plates is connected between the second supporting portion and the second mounting portion. The second reinforcing plate is provided with a second hollow hole. At least one of the second energy absorption boxes is connected between each second mounting portion and the connected second reinforcing plate.
[0013] In some embodiments, the buffer member includes a plurality of elastic members and a plurality of gaskets. The plurality of elastic members are arranged at intervals along the circumferential direction of the hydrogen tank. One end of each elastic member is connected to the inner side of the protection frame, and the other end is connected to one of the gaskets. The gasket is used to abut against the hydrogen tank.
[0014] In some embodiments, the lower vehicle body frame further includes a third cross beam and two inclined beams. The third cross beam is connected between the two longitudinal beams. The third cross beam is located on the side of the second cross beam facing away from the first cross beam. The third cross beam, the second cross beam and the two longitudinal beams enclose 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 cross beam, and the other end is connected to the connection point between the third cross beam and the corresponding longitudinal beam.
[0015] In some embodiments, the vehicle hydrogen storage structure further includes a tailgate frame, two connecting beams, two bridging beams and two wheel housing beams. A part of the tailgate frame is connected to the first cross beam and encloses a third closed loop frame with the first cross beam. The other part of the tailgate frame is located on the opposite sides of the first cross beam and is respectively connected to the corresponding longitudinal beams. The two connecting beams are respectively connected to the parts of the tailgate frame on the opposite sides of the first cross beam. One end of each connecting beam is connected to the third closed loop frame. A fourth closed loop frame is enclosed between each connecting beam and the tailgate frame on the side facing away from the longitudinal beam. The two bridging beams are respectively connected to the parts of the tailgate frame on the opposite sides of the first cross beam. Each bridging beam is further connected to the side of the corresponding connecting beam facing the longitudinal beam. The two wheel housing beams are respectively located on the parts of the tailgate frame on the opposite sides of the first cross beam. Each wheel housing beam is connected to the corresponding longitudinal beam and bridging beam. The left and right sides of the third closed loop frame and the corresponding bridging beam, wheel housing beam and longitudinal beam enclose a fifth closed loop frame.
[0016] In one embodiment of the present application, a vehicle is provided. The vehicle includes a hydrogen tank and the vehicle hydrogen storage structure in any of the above embodiments. The vehicle hydrogen storage structure fixes the hydrogen tank. Description of the Drawings
[0017] Figure 1 It is a perspective view of the rear side view of the vehicle hydrogen storage structure and the hydrogen tank in one embodiment of the present application.
[0018] Figure 2 is Figure 1 a perspective view of the front side view of the vehicle hydrogen storage structure in
[0019] Figure 3 isFigure 1 The bottom view of the vehicle hydrogen storage structure and the hydrogen tank in
[0020] Figure 4 is Figure 1 The sectional view of the vehicle hydrogen storage structure and the hydrogen tank along A-A in
[0021] Figure 5 is Figure 1 The three-dimensional view of the second cross beam, the third cross beam, the diagonal beam, the first bracket and the second bracket of the vehicle hydrogen storage structure in
[0022] Figure 6 is Figure 1 The three-dimensional view of the connecting beam of the vehicle hydrogen storage structure in
[0023] Figure 7 is Figure 1 The three-dimensional view of the longitudinal beam of the vehicle hydrogen storage structure in
[0024] Figure 8 is Figure 7 The top view of the longitudinal beam in
[0025] Figure 9 is Figure 1 The three-dimensional view of the anti-collision beam and the energy absorber of the vehicle hydrogen storage structure in
[0026] Figure 10 is Figure 1 The three-dimensional view of the first bracket, the second bracket, the protection frame, the strap and the hydrogen tank of the vehicle hydrogen storage structure in
[0027] Figure 11 is Figure 10 The sectional view of the structure along B-B in
[0028] Description of main component symbols 100, vehicle hydrogen storage structure; 200, hydrogen tank; 10, lower vehicle body frame; 11, first cross beam; 111, anti-collision beam; 112, energy absorber; 113, hollow cavity; 114, connecting rib; 115, guiding groove; 12, second cross beam; 13, longitudinal beam; 131, longitudinal beam groove; 132, fourth strengthening member; 133, fifth strengthening member; 14, first closed-loop frame; 15, third cross beam; 16, diagonal beam; 17, second closed-loop frame; 18, first strengthening member; 19, cross beam groove; 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 portion; 1054. Intermediate portion; 1055. Second connecting portion; 106. Wheel housing beam; 107. Fifth closed-loop frame; 20. First bracket; 21. Rotating seat; 22. First supporting portion; 23. Hanging portion; 24. First mounting portion; 25. First reinforcing plate; 26. First energy-absorbing box; 30. Protection frame; 31. Buffer member; 311. Elastic member; 312. Gasket; 40. Second bracket; 41. Second supporting portion; 42. Second mounting portion; 43. Gap; 44. Second reinforcing plate; 441. Second hollow hole; 45. Second energy-absorbing box; 50. Tie strap. Detailed implementation manner
[0029] Next, the technical solutions of the present application will be 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 the embodiments.
[0030] It should be noted that when an element is considered to be "connected to" or "provided on" another element, it can be directly connected to the other element or there may be an intermediate element. In the present application, unless otherwise clearly defined and limited, terms such as "installed", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. Terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise clearly specifically limited. The shape descriptions such as length, thickness, and width in the embodiments of the present application are only for illustrative purposes and should not constitute any absolute limitation to the present application. Terms such as "vertical" and "parallel" are used to describe the ideal state between two components. In the actual production or use state, there may be a state approximately vertical or parallel, rather than an absolute description in geometry. The terms "including", "having", and "provided with" in the description of the present application, the claims, and the above drawings, as well as any variations thereof, are intended to cover non-exclusive inclusion.
[0031] As used herein, the mention of "embodiments" means that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Without conflict, the various embodiments in the present application may be combined with each other.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0033] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.
[0034] As Figures 1 to 3 shown, in an embodiment of the present 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 the hydrogen tank 200 is used to store hydrogen to provide energy for the vehicle.
[0035] The vehicle hydrogen storage structure 100 includes a lower vehicle body frame 10. The lower vehicle body frame 10 serves as the base of the vehicle. The front-rear direction of the lower vehicle body frame 10 is the front-rear direction when the vehicle is traveling (hereinafter referred to as the front-rear direction), the left-right direction of the lower vehicle body frame 10 is the left-right direction when the vehicle is traveling (hereinafter referred to as the left-right direction), and the up-down direction of the lower vehicle body frame 10 is the up-down direction when the vehicle is traveling (hereinafter referred to as the up-down direction). The lower vehicle body frame 10 includes a first cross beam 11, a second cross beam 12, and two longitudinal beams 13. The longitudinal beams 13 extend along the front-rear direction. The first cross beam 11 and the second cross beam 12 extend along the left-right direction and connect the two longitudinal beams 13. The first cross beam 11, the second cross beam 12, and the two longitudinal beams 13 enclose a first closed loop frame 14, and the hydrogen tank 200 is accommodated in the first closed loop frame 14.
[0036] As Figures 2 to 4 shown, the vehicle hydrogen storage structure 100 further includes a first bracket 20. One end of the first bracket 20 is connected to the first cross beam 11, and the other end is connected to the second cross beam 12. The first bracket 20 is provided with a rotating seat 21 between the two ends. The rotating seat 21 is connected to the hydrogen tank 200, enabling the hydrogen tank 200 to rotate relative to the lower vehicle body frame 10 about an axis parallel to the up-down direction.
[0037] The vehicle hydrogen storage structure 100 further includes a plurality of protective frames 30. A buffer member 31 is provided inside each protective frame 30. The buffer member 31 abuts against the outer surface of the hydrogen tank 200. The hydrogen tank 200 is supported by the buffer member 31, and the buffer member 31 enables the hydrogen tank 200 to move relative to the protective frame 30.
[0038] The vehicle hydrogen storage structure 100 further includes a plurality of second brackets 40. One end of each second bracket 40 is connected to the first cross beam 11, and the other end is connected to the second cross beam 12. Each second bracket 40 is used to support a corresponding protective frame 30. Optionally, each second bracket 40 is welded to each protective frame 30 in a one-to-one correspondence.
[0039] When the vehicle hydrogen storage structure 100 provided in this application collides, by accommodating the hydrogen tank 200 in the first closed-loop frame 14, the first closed-loop frame 14, as a hard structure, enables the hydrogen tank 200 to be protected by the hard structure to resist impacts. The hydrogen tank 200 is also connected by a rotating seat 21. The rotating seat 21, as a soft structure, enables the hydrogen tank 200 to rotate relative to the lower vehicle body frame 10 about an axis parallel to the up-and-down direction. During a collision, the hydrogen tank 200 can increase energy absorption by rotating to reduce the force on the hydrogen tank 200. The hydrogen tank 200 is also supported by the buffer member 31 inside the protective frame 30, enabling the hydrogen tank 200 to move relative to the lower vehicle body frame 10 when impacted. The buffer member 31, as a soft structure, can play a buffering role to increase energy absorption and reduce the force on the hydrogen tank 200. The first bracket 20 and a plurality of second brackets 40 are also connected between the first cross beam 11 and the second cross beam 12, enabling multiple force transmission paths to be formed between the first cross beam 11 and the second cross beam 12. During a collision, the force on the first cross beam 11 can be transmitted to the second cross beam 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 collision of the first closed-loop frame 14 against the hydrogen tank 200 after significant deformation to protect the hydrogen tank 200 in the first closed-loop frame 14.
[0040] In summary, the vehicle hydrogen storage structure 100 provided in this application, through the cooperation of hard and soft structures, can increase energy absorption and reduce deformation when impacted, improve the safety of the hydrogen tank 200, and avoid defects such as structural weight gain caused by the pure hard impact resistance method.
[0041] Preferably, the first cross beam 11 is located behind the lower vehicle 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 under the working condition of a rear-end collision.
[0042] For example, when the 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 deforms and absorbs energy as a hard structure; at the same time, the first bracket 20 and multiple second brackets 40 deform and absorb energy as soft structures to reduce the deformation of the first closed-loop frame 14; at the same time, the buffer member 31 deforms and absorbs energy as a soft structure to buffer the hydrogen tank 200; at the same time, if the hydrogen tank 200 twists, the rotating seat 21 acts as a soft structure to allow the hydrogen tank 200 to rotate, so as to offset at least part of the torque and reduce the deformation of the hydrogen tank 200.
[0043] For another example, when the vehicle is subjected to an offset collision, that is, when the rear of the vehicle is not completely in contact with 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, so as to offset at least part of the torque and reduce the deformation of the hydrogen tank 200; at the same time, the first closed-loop frame 14 deforms and absorbs energy as a hard structure; at the same time, the first bracket 20 and multiple second brackets 40 deform and absorb energy as soft structures to reduce the deformation of the first closed-loop frame 14; at the same time, the buffer member 31 deforms and absorbs energy as a soft structure to buffer the hydrogen tank 200.
[0044] 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 enables both the left and right sides of the hydrogen tank 200 to be supported by the buffer member 31 of the protection 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 offset the torque of the hydrogen tank 200.
[0045] As an exemplary example, there are two second brackets 40. Correspondingly, there are also two protection frames 30. One second bracket 40 is provided on each of the left and right sides of the first bracket 20. The two protection frames 30 are respectively provided at the left and right ends of the hydrogen tank 200. The first bracket 20 is provided at the middle position of the hydrogen tank 200. The axis where the rotating shaft of the rotating seat 21 is located passes through the center of the hydrogen tank 200.
[0046] In some embodiments, such as Figure 2 、 Figure 3 and Figure 5As shown, the lower body frame 10 further includes a third cross beam 15 and two diagonal beams 16. The third cross beam 15 extends in the left - right direction and connects the two longitudinal beams 13. The third cross beam 15 is located on the side of the second cross beam 12 facing away from the first cross beam 11. The third cross beam 15, the second cross beam 12 and the two longitudinal beams 13 enclose a second closed - loop frame 17. The second closed - loop frame 17 can absorb energy by deforming during impact, thereby reducing the deformation of the first closed - loop frame 14. The two diagonal beams 16 are located within the second closed - loop frame 17. One end of each diagonal beam 16 is connected to the second cross beam 12, and the other end is connected to the connection point of the third cross beam 15 and the corresponding longitudinal beam 13. The two diagonal beams 16 are used to transfer the force of the second cross beam 12 to the longitudinal beams 13 on both sides. The force transferred to the longitudinal beams 13 will be transmitted towards the front of the vehicle, thereby reducing the deformation of the first closed - loop frame 14 and even the entire vehicle.
[0047] In some embodiments, as Figure 2 、 Figure 3 and Figure 5 shown, the lower body frame 10 further includes a plurality of first reinforcing members 18. A first reinforcing member 18 is respectively provided at the positions where the second cross beam 12 and the third cross beam 15 connect the two diagonal beams 16. The first reinforcing member 18 is used to enhance the energy - absorbing property at the connection points of the diagonal beam 16 with the second cross beam 12 and the third cross beam 15. In this way, it can guide more of the force of the second cross beam 12 to be transmitted to the longitudinal beams 13 on both sides through the diagonal beams 16, further reducing the deformation of the first closed - loop frame 14 and even the entire vehicle.
[0048] In some embodiments, as Figure 2 、 Figure 3 and Figure 5 shown, both the second cross beam 12 and the third cross beam 15 are provided with cross - beam grooves 19. A part of each first reinforcing member 18 is located outside the cross - beam groove 19 and is connected to the corresponding second cross beam 12 or third cross beam 15. Another part of each first reinforcing member 18 is located inside the cross - beam groove 19 and is connected to the groove wall of the cross - beam groove 19. In this way, each first reinforcing member 18 can form a hollow energy - absorbing box with the second cross beam 12 or the third cross beam 15, thereby guiding more of the force of the second cross beam 12 to be transmitted to the longitudinal beams 13 on both sides through the diagonal beams 16.
[0049] Optionally, the cross - beam grooves 19 of the second cross beam 12 and the third cross beam 15 are arranged upward and extend in the left - right direction. The part of each first reinforcing member 18 located outside the cross - beam groove 19 covers the cross - beam groove 19 in the corresponding area. The parts on the left and right sides of each first reinforcing member 18 are recessed towards the inside of the cross - beam groove 19 and are connected to the groove walls in the front - back direction of the cross - beam groove 19, and / or, connected to the bottom wall of the cross - beam groove 19. In this way, a complete or hollowed - out energy - absorbing box can be formed as needed, as long as it can guide the force of the second cross beam 12 to be transmitted to the diagonal beam 16.
[0050] In some embodiments, asFigure 1 , Figure 2 and Figure 4 As shown in Figure 1 , Figure 2 and Figure 4 , the vehicle hydrogen storage structure 100 further includes a tailgate frame 101. A part of the tailgate frame 101 is located behind the lower body frame 10, and another part of the tailgate frame 101 is located on the left and right sides of the lower body frame 10. The parts of the tailgate frame 101 located on the left and right sides of the lower body frame 10 are respectively connected to the corresponding side longitudinal beams 13. The part of the tailgate frame 101 located behind the lower body frame 10 is connected to the first cross beam 11 and encloses a third closed-loop frame 102 with the first cross beam 11. The third closed-loop frame 102 can absorb energy by deforming during impact, so that the force on the first cross beam 11 can be transmitted to the third closed-loop frame 102, thereby further reducing the deformation of the first closed-loop frame 14 to protect the hydrogen tank 200 in the first closed-loop frame 14.
[0051] Optionally, the part of the tailgate frame 101 located behind the lower body frame 10 is in the shape of a rectangular frame body. The tail ends of the two longitudinal beams 13 are connected to the bottom edge of the rectangular frame body, and the bottom edge of the rectangular frame body forms the first cross beam 11, that is, the first cross beam 11 is a part of the tailgate frame 101.
[0052] The lower body frame 10 further includes two connecting beams 103. The two connecting beams 103 extend in the front-rear direction and are respectively located on the left and right sides of the part of the tailgate frame 101. The rear end of each connecting beam 103 is connected to the third closed-loop frame 102. Each connecting beam 103 encloses a fourth closed-loop frame 104 with the tailgate frame 101 on the side facing away from 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 beam 103 can transmit the force on the third closed-loop frame 102 to the fourth closed-loop frame 104. The fourth closed-loop frame 104 can absorb energy by deforming, so that the force on the third closed-loop frame 102 can be transmitted 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 to protect the hydrogen tank 200 in the first closed-loop frame 14.
[0053] As Figure 1 , Figure 2 and Figure 4As shown, the lower vehicle body frame 10 further includes two bridging beams 105 and two wheel beams 106, the two bridging beams 105 and the two wheel beams 106 respectively connect the left and right sides of the tailgate frame 101, each bridging beam 105 is also connected to the lower side of the connecting beam 103 on the corresponding side, each wheel beam 106 connects the longitudinal beam 13 and the bridging beam 105 on the same side, and the left and right sides of the third closed-loop frame 102 and the bridging beams 105, the wheel beams 106, and the longitudinal beams 13 on the corresponding side 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 of the connecting beam 103 can be transmitted downward to the longitudinal beam 13 through the bridging beam 105 and the wheel beam 106 in sequence, so that the force of 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 by 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 turn to protect the hydrogen tank 200 in the first closed-loop frame 14.
[0054] Preferably, the lower end of the wheel beam 106 is connected to the connection between the longitudinal beam 13 and the second cross beam 12. In this way, the wheel beam 106 can transfer the force of the connecting beam 103 to the second cross beam 12, and then transfer it to the longitudinal beam 13 through the inclined beam 16, forcing the vehicle to move forward after a rear-end collision, thereby reducing the deformation of the first closed-loop frame 14 and even the entire vehicle.
[0055] In summary, the vehicle hydrogen storage structure 100 can form a seven-ring cage 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, which increases the force transmission path. When subjected to a collision, the collision energy can be absorbed and dispersed as much as possible, thereby reducing local deformation around the hydrogen tank 200 to protect the hydrogen tank 200.
[0056] In some embodiments, Figure 1 , Figure 4 and Figure 6 As shown, each connecting beam 103 has a connecting beam groove 1031, and a second reinforcement 1032 is provided inside the connecting beam groove 1031. Each bridging beam 105 has a bridging beam groove 1051, and a third reinforcement 1052 is provided inside the bridging beam groove 1051. The second reinforcement 1032, the third reinforcement 1052 and the wheel pack beam 106 on the same side are arranged in sequence from top to bottom. In this way, the second reinforcement 1032 and the third reinforcement 1052 can form a more efficient force transmission path to guide the force of the connecting beam 103 from the second reinforcement 1032 to the third reinforcement 1052, and then to the wheel pack beam 106.
[0057] In some embodiments, Figure 1 , Figure 4 and Figure 6As shown, the second reinforcing member 1032 includes an inner plate 1033, an outer plate 1034, a first end connecting plate 1035, a middle connecting plate 1036, and a second end connecting plate 1037 that extend along the length direction of the connecting beam 103. The inner plate 1033 and the outer plate 1034 are arranged opposite to each other. The first end connecting plate 1035 connects the tops of the inner plate 1033 and the outer plate 1034. The second end connecting plate 1037 connects the bottoms of the inner plate 1033 and the outer plate 1034. The middle connecting plate 1036 is located between the first end connecting plate 1035 and the second end connecting plate 1037 and connects the inner plate 1033 and the outer plate 1034. 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. Thus, the second reinforcing member 1032 forms a double-layer hollow energy absorption box and can guide the force on the connecting beam 103 to be transmitted from the first end connecting plate 1035 with a smaller width to the second end connecting plate 1037 with a larger width.
[0058] Optionally, the second reinforcing member 1032 is made by roll-welding a plate from both sides towards the middle.
[0059] In some embodiments, as Figure 1 、 Figure 4 and Figure 6 shown, the third reinforcing member 1052 includes a first connecting portion 1053, a middle portion 1054, and a second connecting portion 1055 that are connected in sequence. The second connecting portion 1055 is located below the first connecting portion 1053. Both the first connecting portion 1053 and the second connecting portion 1055 are connected to the bridging beam 105. The first connecting portion 1053 is located directly below the second reinforcing member 1032. The second connecting portion 1055 is located directly above the connection between the wheel housing beam 106 and the bridging beam 105. Thus, the force on the second reinforcing member 1032 can be more concentratedly transmitted to the wheel housing beam 106 through the middle portion 1054.
[0060] Optionally, the third reinforcing member 1052 is made by bending a plate.
[0061] In some embodiments, as Figure 1 、 Figure 7 and Figure 8As shown, each longitudinal beam 13 is provided with a longitudinal beam groove 131 along its length direction. A fourth reinforcing member 132 and a plurality of fifth reinforcing members 133 are arranged in the longitudinal beam groove 131. The fourth reinforcing member 132 is attached to the groove wall of the longitudinal beam groove 131. The plurality of fifth reinforcing members 133 are located in the longitudinal beam groove 131 and are arranged at intervals along the length direction of the longitudinal beam 13. Each fifth reinforcing member 133 is connected to the fourth reinforcing member 132. Every two adjacent fifth reinforcing members 133 are relatively cross-inclined. The fourth reinforcing member 132 and the plurality of fifth reinforcing members 133 are used to enhance the structural strength of the longitudinal beam 13, so that the longitudinal beam 13 can withstand a greater impact force, thereby forcing the vehicle to move forward after a rear-end collision and reducing the deformation of the first closed-loop frame 14 and even the entire vehicle.
[0062] Optionally, the cross-section of the longitudinal beam groove 131 is rectangular. The longitudinal beam groove 131 has a groove bottom surface and two groove side surfaces perpendicular to the groove bottom surface. The fourth reinforcing member 132 is attached to at least a part of the groove bottom surface and at least a part of the two groove side surfaces. In this way, the strength of the connection between the groove bottom surface and the two groove side surfaces can be enhanced. Each fifth reinforcing member 133 is in a plate shape. The edge of each fifth reinforcing member 133 is welded to the fourth reinforcing member 132 and can also be welded to the groove side surface of the groove bottom surface in the longitudinal beam groove 131 that is not attached to the fourth reinforcing member 132 at the same time. In this way, the longitudinal beam 13 can be supported by a plurality of fifth reinforcing members 133 in the longitudinal beam groove 131, reducing the phenomenon of the longitudinal beam 13 deforming and sinking into the longitudinal beam groove 131 and enhancing the structural strength of the longitudinal beam 13.
[0063] In some embodiments, as Figure 1 and Figure 9 shown, the first cross beam 11 is connected to the tail ends of two longitudinal beams 13. A bumper beam 111 and a plurality of energy-absorbing members 112 are connected to the rear side of the first cross beam 11. The plurality of energy-absorbing members 112 are located between the first cross beam 11 and the bumper beam 111. The bumper beam 111 has a hollow cavity 113 along its length direction. At least one connecting rib 114 is arranged in the hollow cavity 113, so that the bumper beam 111 forms a multi-layer energy-absorbing structure to enhance the energy-absorbing performance of the bumper beam 111. Each energy-absorbing member 112 is in a box shape. An induction groove 115 is provided on the edge of the energy-absorbing member 112 extending in the front-rear direction. The induction groove 115 is used to guide the energy-absorbing member 112 to compress and deform in the front-rear direction to enhance the energy-absorbing performance and reduce the force transmitted to the first cross beam 11 during a rear-end collision.
[0064] Optionally, two energy-absorbing members 112 are provided at positions near the left and right ends of the anti-collision beam 111, that is, two energy-absorbing members 112 are provided at the position near the left end of the anti-collision beam 111, and two energy-absorbing members 112 are also provided at the position near the right end of the anti-collision beam 111. Among the two energy-absorbing members 112 at the same end, since the anti-collision beam 111 has a curvature and protrudes backward, the volume of the inner energy-absorbing member 112 is larger and can play a main energy-absorbing role, and the volume of the outer energy-absorbing member 112 is smaller and can play an auxiliary energy-absorbing role. Thus, compared with setting only one energy-absorbing member 112, the two energy-absorbing members 112 can improve the energy absorption performance and reduce the force transmitted to the first cross beam 11 during a rear-end collision.
[0065] In some embodiments, as Figure 5 、 Figure 10 and Figure 11 shown, the first bracket 20 further includes a first support portion 22, two suspension portions 23 and two first mounting portions 24. The rotating seat 21 is disposed on the first support portion 22. One suspension portion 23 is connected to each end of the first support portion 22. One first mounting portion 24 is connected to the end of each suspension portion 23 away from the first support portion 22. One of the first mounting portions 24 is mounted on the first cross beam 11, and the other first mounting portion 24 is mounted on the second cross beam 12. The distance between the two suspension portions 23 gradually increases from the first support portion 22 towards the hydrogen tank 200, that is, the distance between the two suspension portions 23 gradually increases from bottom to top, so that the first bracket 20 is closer to the hydrogen tank 200 as a whole, reducing the space occupied by the first bracket 20.
[0066] Optionally, the first support portion 22 is set to be horizontal and extends along the front-rear direction; the two suspension portions 23 are set to be inclined or arc-shaped; the first mounting portion 24 is mounted on the first cross beam 11 or the second cross beam 12 by welding.
[0067] In some embodiments, as Figure 5 、 Figure 10 and Figure 11 shown, the first bracket 20 further includes a plurality of first reinforcing plates 25. At least one first reinforcing plate 25 is connected between the connected suspension portion 23 and the first mounting portion 24. The first reinforcing plate 25 is used to improve the connection strength between the suspension portion 23 and the first mounting portion 24.
[0068] Optionally, the first reinforcing plate 25 can be provided with a plurality of first hollow holes (not shown in the figure), which can not only reduce the weight but also increase the local deformation of the first reinforcing plate 25 after a collision, thereby improving the energy absorption performance of the first bracket 20 and reducing the deformation of the first bracket 20 to protect the hydrogen tank 200.
[0069] In some embodiments, the first bracket 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 portion 24 and the connected first reinforcing plate 25. The first energy-absorbing box 26 is hollow inside. The first energy-absorbing box 26 is configured to increase local deformation after a collision, thereby enhancing the energy absorption performance of the first bracket 20, reducing the deformation of the first bracket 20, and protecting the hydrogen tank 200.
[0070] Optionally, a first reinforcing plate 25 is connected to each of the left and right sides of the connected suspension portion 23 and the first mounting portion 24. A first energy-absorbing box 26 is provided between the two first reinforcing plates 25 on the left and right and the first mounting portion 24. The top surface of the first energy-absorbing box 26 is welded to the first mounting portion 24, and the bottom surface and side surfaces of the first energy-absorbing box 26 are welded to the first reinforcing plates 25. Through the 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 also the structural strength of the first bracket 20 can be enhanced and the energy absorption performance of the first bracket 20 can be improved.
[0071] In some embodiments, such as Figure 5 , Figure 10 and Figure 11 shown, each second bracket 40 includes a second support portion 41 and two second mounting portions 42. One second mounting portion is mounted on the first cross beam 11, and the other second mounting portion 42 is mounted on the second cross beam 12. The second support portion 42 and the protection frame 30 extend along the circumferential direction of the hydrogen tank 200. Each second support portion 41 is configured to support a protection frame 30. By both the second support portion 42 and the protection frame 30 extending along the circumferential direction of the hydrogen tank 200, the shapes of the second support portion 42 and the protection frame 30 are similar, thereby increasing the contact surface between the second support portion 42 and the protection frame 30, and further enhancing the support stability of the second support portion 42 for the protection frame 30.
[0072] In some embodiments, such as Figure 5 and Figure 10 shown, the vehicle hydrogen storage structure 100 further includes a plurality of straps 50. Each strap 50 binds a corresponding second bracket 40 and the hydrogen tank 200 to increase the force of the hydrogen tank 200 against the buffer member 31, so that the hydrogen tank 200 and the protection frame 30 are in interference fit, reducing the sway of the hydrogen tank 200.
[0073] Wherein, gaps 43 are provided at the joints between the second support portion 41 and the two second mounting portions 42. The strap 50 passes through the gaps 43. A part of the strap 50 abuts against the side of the second support portion 41 facing away from the hydrogen tank 200. That is, a part of the strap 60 is located below the second support portion 41 and applies an upward force to the second support portion 41, and another 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 portion 41 tend to approach each other. In this way, the hydrogen tank 200 and the protective frame 30 squeeze the intermediate buffer member 31, so as to increase the force of the hydrogen tank 200 abutting against the buffer member 31 and reduce the shaking of the hydrogen tank 200.
[0074] In some embodiments, as Figure 5 and Figure 10 shown, the second bracket 40 further 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 enhance the connection strength between the second support portion 42 and the second mounting portion 43.
[0075] Optionally, the second reinforcing plate 44 is provided with a second hollow hole 441, which can not only reduce the weight, but also increase the local deformation of the second reinforcing plate 44 after a collision, thereby enhancing the energy absorption performance of the second bracket 40 and reducing the deformation of the second bracket 40 to protect the hydrogen tank 200.
[0076] In some embodiments, the second bracket 40 further includes a plurality of second energy absorption boxes 45. At least one second energy absorption box 45 is connected between each second mounting portion 43 and the connected second reinforcing plate 44. The interior of the second energy absorption box 45 is hollow. The second energy absorption box 45 is used to increase the local deformation after a collision, thereby enhancing the energy absorption performance of the second bracket 40 and reducing the deformation of the second bracket 40 to protect the hydrogen tank 200.
[0077] Optionally, a second reinforcing plate 44 is respectively connected to the left and right sides of the second mounting portion 43 and the second reinforcing plate 44. A second energy absorption box 45 is provided between the left and right two second reinforcing plates 44 and the second mounting portion 43. The top surface of the second energy absorption box 45 is welded to the second mounting portion 43, and the bottom surface and side surface of the second energy absorption box 45 are welded to the second reinforcing plate 44. Through the two second reinforcing plates 44 and one second energy absorption box 45, not only can the number of parts be reduced to simplify the structure, but also the structural strength of the second bracket 40 can be enhanced and the energy absorption performance of the second bracket 40 can be improved.
[0078] In some embodiments, as Figure 10 and Figure 11As shown, the buffer member 31 includes a plurality of elastic members 311 and a plurality of gaskets 312. The plurality of elastic members 311 are arranged at intervals along the circumferential direction of the hydrogen tank 200. One end of each elastic member 311 is connected to the inner side of the protection 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 protection frame 30 are in interference fit, reducing the shaking of the hydrogen tank 200. When being impacted, the elastic member 311 deforms to absorb energy and reduce the force on the hydrogen tank 200. Exemplarily, the elastic member 311 can be a spring or the like.
[0079] Optionally, there are two protection frames 30 which are respectively located at the left and right ends of the hydrogen tank 200. Among them, since an intake valve, an intake pipe, etc. need to be provided at the head end of the hydrogen tank 200, while they are not needed at the tail end, the protection frame 30 at the head end is in a complete ring shape and surrounds the hydrogen tank 200 to cover the head end of the hydrogen tank 200 at 360° to protect the intake valve, the intake pipe, etc. At this time, a plurality of buffer members 31 are evenly distributed at 360° on the inner side of the protection frame 30 at the head end, so that the head end of the hydrogen tank 200 and the protection frame 30 are in interference fit; The protection frame 30 at the tail end does not need to cover the hydrogen tank 200, so the protection 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 play a role in weight reduction. At this time, the tail end of the hydrogen tank 200 is abutted against the buffer member 31 on the inner side of the protection frame 30 through a strap 60.
[0080] In addition, those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present application, rather than to limit the present application. As long as it is within the scope of the essential spirit of the present application, appropriate changes and variations made to the above embodiments fall within the scope of the disclosure of the present application.
Claims
1. A vehicle hydrogen storage structure, characterized in that, include: A lower body frame, the lower body frame comprising a first cross beam, a second cross beam and two longitudinal beams, the first cross beam and the second cross beam are connected between the two longitudinal beams, the first cross beam, the second cross beam and the two longitudinal beams form a first closed loop frame, and the first closed loop frame is used to accommodate a hydrogen tank; A first bracket, one end of the first bracket is connected to the first crossbeam, and the other end is connected to the second crossbeam, and a rotating seat is provided between the two ends of the first bracket, the rotating seat is connected to the hydrogen tank, and the rotating seat is used to enable the hydrogen tank to rotate relative to the lower body frame; A plurality of protection frames, each of which has a buffer member disposed inside, the buffer member abutting against the hydrogen tank, the hydrogen tank being supported by the buffer member and being movable relative to the protection frame; and A plurality of second brackets, one end of each of the second brackets is connected to the first crossbeam, and the other end is connected to the second crossbeam, and each of the second brackets supports one of the protection frames.
2. The vehicle hydrogen storage structure according to claim 1, wherein: The first bracket includes a first supporting portion, two hanging portions and two first mounting portions. The rotating seat is arranged on the first supporting portion. Both ends of the first supporting portion are connected to a hanging portion respectively. One end of each hanging portion away from the first supporting portion is connected to a first mounting portion. One first mounting portion is mounted on the first beam, and the other first mounting portion is mounted on the second beam. The distance between the two hanging portions gradually increases from the first supporting portion to the hydrogen tank.
3. The vehicle hydrogen storage structure according to claim 2, wherein: The first bracket also includes multiple first reinforcement plates and multiple first energy absorption boxes. At least one first reinforcement plate is connected between the connected hanging part and the first mounting part. The first reinforcement plate is provided with a first hollow hole. At least one first energy absorption box is connected between each first mounting part and the connected first reinforcement plate.
4. The vehicle hydrogen storage structure according to claim 1, characterized in that: Each of the second brackets includes a second supporting portion and two second mounting portions, the two ends of the second supporting portion are respectively connected to a second mounting portion, one second mounting portion is mounted on the first beam, and the other second mounting portion is mounted on the second beam, the second supporting portion and the protective frame extend along the circumference of the hydrogen tank, and each second supporting portion is used to support a protective frame.
5. The vehicle hydrogen storage structure according to claim 4, characterized in that: Gaps are provided at the connections between the second supporting portion and the two second mounting portions. The vehicle hydrogen storage structure also includes a strap, which passes through the gap. A portion of the strap abuts against the side of the second supporting portion facing away from the hydrogen tank, and another portion of the strap abuts against the hydrogen tank, so that the hydrogen tank and the second supporting portion tend to move closer to each other.
6. The vehicle hydrogen storage structure according to claim 4, characterized in that: The second bracket also includes multiple second reinforcement plates and multiple second energy absorption boxes. At least one second reinforcement plate is connected between the second support portion and the second mounting portion. The second reinforcement plate is provided with a second hollow hole. At least one second energy absorption box is connected between each second mounting portion and the connected second reinforcement plate.
7. The vehicle hydrogen storage structure according to claim 1, wherein: The buffer member includes a plurality of elastic members and a plurality of gaskets. The plurality of elastic members are arranged at intervals along the circumferential direction of the hydrogen tank. One end of each elastic member is connected to the inner side of the protection frame, and the other end is connected to one of the gaskets. The gasket is used to abut against the hydrogen tank.
8. The vehicle hydrogen storage structure according to claim 1, characterized in that, The lower vehicle body frame further includes: A third cross beam, which is connected between the two longitudinal beams. The third cross beam is located on the side of the second cross beam facing away from the first cross beam. The third cross beam, the second cross beam and the two longitudinal beams enclose a second closed loop frame; and Two inclined beams, which are located within the second closed loop frame. One end of each inclined beam is connected to the second cross beam, and the other end is connected to the connection point of the third cross beam and the corresponding longitudinal beam.
9. The vehicle hydrogen storage structure according to claim 1, wherein, The vehicle hydrogen storage structure further includes: A tailgate frame, a part of which is connected to the first cross beam and encloses a third closed loop frame with the first cross beam. The other part of the tailgate frame is located on the opposite sides of the first cross beam and is respectively connected to the corresponding longitudinal beams; Two connecting beams, which are respectively connected to the parts of the tailgate frame on the opposite sides of the first cross beam. One end of each connecting beam is connected to the third closed loop frame. On the side facing away from the longitudinal beam, each connecting beam and the tailgate frame enclose a fourth closed loop frame; Two bridging beams, which are respectively connected to the parts of the tailgate frame on the opposite sides of the first cross beam. Each bridging beam is further connected to the side of the corresponding connecting beam facing the longitudinal beam; and Two wheel housing beams, which are respectively located on the parts of the tailgate frame on the opposite sides of the first cross beam. Each wheel housing beam is connected to the corresponding longitudinal beam and the bridging beam. The opposite sides of the third closed loop frame and the corresponding bridging beam, wheel housing beam and longitudinal beam enclose a fifth closed loop frame.
10. A vehicle, characterized in that: The vehicle includes a hydrogen tank and the vehicle hydrogen storage structure according to any one of claims 1 to 9, and the vehicle hydrogen storage structure fixes the hydrogen tank.