Vehicle chassis and vehicle

Abstract

A vehicle chassis (10000) and a vehicle. The vehicle chassis comprises: a frame (500); a connecting structure (400) comprising straps (410), wherein at least two straps are provided and are arranged at intervals in a length direction of vehicle body longitudinal beams (510), and the straps are mounted on the vehicle body longitudinal beams; a gas storage cylinder (200), wherein one gas storage cylinder is arranged in an extending direction of the vehicle body longitudinal beams, and the gas storage cylinder is mounted in the at least two straps; a power battery (601), the power battery being located on the other side of the frame in a transverse direction and being arranged opposite to the gas storage cylinder, and the power battery being mounted on the vehicle body longitudinal beams; and a fuel cell (602), the fuel cell being mounted on the frame and being located above the two vehicle body longitudinal beams.

Description

Vehicle chassis and vehicle

[0001] Cross-reference to related applications

[0002] The present application is based on and claims priority to Chinese Patent Application No. 202410869476.2, filed on June 28, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the field of new energy technology, and in particular to a vehicle chassis and a vehicle. BACKGROUND

[0004] Fuel cell new energy vehicles are driven by hydrogen or hydrogen-containing substances and oxygen in the air in a fuel cell to generate electricity, which is supplied to an electric motor to drive the new energy vehicle to travel, and the generated chemical energy is converted into mechanical energy. At present, with the continuous development of new energy vehicles, hydrogen energy vehicles have gradually become an important choice.

[0005] In the existing fuel cell vehicle power system, the gas storage cylinder is arranged on both sides of the vehicle frame. This arrangement occupies a large part of the vehicle chassis space, resulting in that in the vehicle arrangement process, the power battery can only be placed in the middle position of the vehicle frame, so that the power battery can only be selected from a limited number of schemes according to the boundary of the power battery, resulting in high difficulty in selecting the power battery. Moreover, the power battery and the gas storage cylinder occupy a large part of the vehicle chassis space, which seriously hinders the arrangement of other components, thereby seriously increasing the difficulty of the overall vehicle arrangement, and the space utilization rate is low, which is not conducive to the compact design of the new energy vehicle.

[0006] SUMMARY

[0007] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0008] To this end, one object of the present disclosure is to provide a vehicle chassis, which has reasonable arrangement positions of components, high space utilization, is conducive to the compact design of the vehicle chassis, and optimizes the distribution of the center of gravity.

[0009] Another object of the present disclosure is to provide a vehicle comprising the above-mentioned vehicle chassis.

[0010] The vehicle chassis according to the embodiments of the present disclosure comprises a vehicle frame, the vehicle frame comprises two vehicle body longitudinal beams and a vehicle body transverse beam connected between the two vehicle body longitudinal beams; a connecting structure is located on one lateral side of the vehicle frame, the connecting structure comprises at least two straps arranged at intervals along the length direction of the vehicle body longitudinal beam, and the straps are mounted on one of the vehicle body longitudinal beams; one gas cylinder is arranged along the extension direction of the vehicle body longitudinal beam and is mounted in the at least two straps; a power battery is located on the other lateral side of the vehicle frame and is arranged opposite to the gas cylinder, and the power battery is mounted on the other vehicle body longitudinal beam; a fuel cell is mounted on the vehicle frame and located above the two vehicle body longitudinal beams, the fuel cell is connected with the gas cylinder through a gas supply pipe, and the output end of the fuel cell is electrically connected with the power battery.

[0011] According to the vehicle chassis of the embodiments of the present disclosure, the gas cylinder and the power battery can be arranged opposite to each other on the vehicle frame and are generally in a symmetrical state, which not only has an attractive layout, but also can make full use of the space on the lateral side of the vehicle frame, reduce the occupation of the space above the vehicle frame, increase the loading capacity of the vehicle chassis, ensure the uniform distribution of the overall vehicle weight, reduce the risk of rollover of the vehicle chassis during driving, and improve the convenience of maintenance, replacement and disassembly of the hydrogen system and the power battery. The gas cylinder, the power battery and the fuel cell are arranged in a triangular layout on the vehicle frame. This is conducive to concentrating the center of gravity of the overall vehicle in the low gravity area of the vehicle frame as much as possible. In this way, the position of the gravity center of the overall vehicle can be optimized, the driving stability and maneuverability can be significantly improved, the risk of rollover of the vehicle chassis can be further reduced, and the overall dynamic performance of the vehicle can be improved. In this way, the dynamic balance and torsional stiffness of the vehicle chassis are better under various driving conditions, and the driving comfort and safety of the overall vehicle are improved.

[0012] Additional aspects and advantages of the present disclosure will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0013] FIG. 1 is a perspective view of a vehicle chassis in one direction according to some embodiments of the present disclosure;

[0014] FIG. 2 is a perspective view of a vehicle chassis in another direction according to some embodiments of the present disclosure;

[0015] FIG. 3 is a schematic view of the structure of a hydrogen system on a vehicle frame according to some embodiments of the present disclosure;

[0016] FIG. 4 is a schematic view of the connection of a strap and a support rod according to some embodiments of the present disclosure;

[0017] FIG. 5 is a schematic view of the overall structure of a connecting structure according to some embodiments of the present disclosure;

[0018] Figure 6 is a schematic diagram of the assembly structure of the connection structure and the gas cylinder in some embodiments of the present disclosure;

[0019] Figure 7 is a partial enlarged view of A in Figure 4;

[0020] Figure 8 is a schematic diagram of the binding structure in some embodiments of the present disclosure;

[0021] Figure 9 is a schematic diagram of the structure of the skin connecting piece in some embodiments of the present disclosure;

[0022] Figure 10 is a schematic diagram of the connection of the binding connecting piece and the support rod in some embodiments of the present disclosure;

[0023] Figure 11 is a perspective view of the gas filling structure in some embodiments of the present disclosure;

[0024] Figure 12 is a partial structure view of the vehicle-mounted hydrogen system in the front view direction in some embodiments of the present disclosure;

[0025] Figure 13 is a structure view of the vehicle-mounted hydrogen system in the rear view direction in some embodiments of the present disclosure.

[0026] Reference signs:

[0027] Vehicle chassis 10000,

[0028] Vehicle-mounted hydrogen system 1000,

[0029] Cylinder mouth integrated valve 1, gas inlet 101, gas outlet 102, relief port 103, second manual valve 11,

[0030] Gas filling structure 2, cantilever rod 201, bending part 2011, rod end fixing part 202, hydrogen filling module 203, anti-static sheet 204,

[0031] Pressure reducing valve 31, cylinder tail valve 32, tail port 321, first manual valve 33,

[0032] Gas supply pipe 51, hose section 511, gas exhaust pipe 53, cylinder body connecting pipe 55, gas inlet connecting pipe 57, pressure reducing connecting pipe 58,

[0033] Relief connecting pipe 61, first relief sub-pipe 611, second relief sub-pipe 612,

[0034] Cylinder mouth end fixing device 7, clamp 71, clamping plate 711, clamping plate connecting piece 712, mounting part 72, extension plate 73,

[0035] Gas cylinder 200, cylinder mouth end 210, cylinder tail end 220,

[0036] Connecting structure 400, binding band 410, binding section 411, through hole 412, connecting shaft 413, skin fixing part 414, skin 420, skin bottom plate 421, skin side plate 422, adjusting opening 423, bending section 424, skin end plate 425, support rod 430, sub-rod section 431, skin connector 432, bottom connecting plate 4301, side connecting plate 4302, first circular arc plate 4303, connecting reinforcing rib 4304, adjusting mechanism 450, elastic member 451, adjusting rod 452, connecting nut 453, adjusting hole 454, adjusting nut 455,

[0037] Frame 500, vehicle body longitudinal beam 510, vehicle body cross beam 520, axle 530, electric drive axle 531, wheel 540, drive motor 550,

[0038] Power battery 601, fuel cell 602, control unit 603, high-voltage control unit 6031, inverter 604, air conditioning system 605, air conditioning condenser 6051. DETAILED DESCRIPTION

[0039] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0040] A vehicle chassis 10000 according to an embodiment of the present disclosure is described below with reference to the accompanying drawings.

[0041] The vehicle chassis 10000 according to an embodiment of the present disclosure comprises a frame 500, a connecting structure 400, a gas cylinder 200, a power battery 601, and a fuel cell 602.

[0042] The frame 500 comprises two vehicle body longitudinal beams 510 and a plurality of vehicle body cross beams 520 connected between the two vehicle body longitudinal beams 510. The connecting structure 400 is located on one lateral side of the frame 500, and the connecting structure 400 comprises at least two binding bands 410 arranged at intervals along the length direction of the vehicle body longitudinal beam 510, and the binding bands 410 are mounted on one vehicle body longitudinal beam 510. The gas cylinder 200 is one and is arranged along the extension direction of the vehicle body longitudinal beam 510, and the gas cylinder 200 is mounted in the at least two binding bands 410. The power battery 601 is located on the other lateral side of the frame 500 and is arranged opposite to the gas cylinder 200, and the power battery 601 is mounted on the other vehicle body longitudinal beam 510. The fuel cell 602 is mounted on the frame 500 and is located above the two vehicle body longitudinal beams 510, the fuel cell 602 is connected with the gas cylinder 200 through a gas supply pipe 51, and an output end of the fuel cell 602 is electrically connected with the power battery 601.

[0043] The fuel cell 602 converts the free energy part of the chemical energy of fuel into electric energy through an electrochemical reaction, has high power generation efficiency, uses fuel and oxygen as raw materials, has no mechanical transmission components, and thus can achieve no harmful gas emission and long service life.

[0044] The gas cylinder 200 is used to store fuel gas, and the power battery 601 is used to store electric energy generated by the fuel cell 602 and supply the power consumption demand of the vehicle chassis 10000 after the stored electric energy is output. The gas cylinder 200 and the power battery 601 are connected with the vehicle body longitudinal beam 510 of the vehicle frame 500, and the gas cylinder 200 and the power battery 601 are arranged on the transverse two sides of the vehicle frame 500, for example, the gas cylinder 200 and the power battery 601 are arranged on the left and right sides of the vehicle frame 500 in FIG. 1. The connection mode of the power battery 601 and the vehicle frame 500 can be, but is not limited to, welding, bolt connection and the like, or the power battery 601 and the vehicle frame 500 are connected through a connecting bracket.

[0045] In the present disclosure, the number of gas cylinders 200 is one, and at least two straps 410 are hung on the vehicle frame 500. In this way, the gas cylinder 200 and the power battery 601 can be arranged opposite to each other on the vehicle frame 500 and generally in a symmetrical state, which not only has a beautiful layout, but also can fully utilize the space on the side of the vehicle frame 500, reduce the occupation of the space above the vehicle frame 500, is conducive to increasing the loading capacity of the vehicle chassis 10000, ensures the uniform distribution of the overall vehicle weight, and reduces the risk of rollover of the vehicle chassis 10000 during driving. Moreover, the convenience of maintenance, replacement and disassembly of the on-board hydrogen system 1000 and the power battery 601 is increased.

[0046] It can be understood that if the number of gas cylinders is two, the two gas cylinders need to be arranged on the two sides of the vehicle frame, and this arrangement occupies most of the side space of the overall vehicle chassis, which increases the difficulty of arranging the power battery and the fuel cell. For example, some hydrogen cards divide the electric battery into multiple rows and columns of battery units and lay them on the top of the vehicle frame, and the anti-vibration ability is weak when impacted and the risk of explosion is high. The fuel cell is installed with these battery units, and many additional structures are required for the safety of the fuel cell, which also affects the selection of the fuel cell. Moreover, this arrangement form leads to the arrangement of the corresponding power distribution unit at the rear position of the vehicle frame, thereby requiring a relatively long high-voltage wire harness to be connected with the power battery, the drive motor and the fuel cell, which not only seriously increases the difficulty of the overall vehicle arrangement, but also causes the problem of insufficient utilization of the chassis space and the difficulty of arranging other systems. In the present disclosure, a single gas cylinder 200 with large capacity is used to save the space of the overall vehicle chassis, so that the fuel cell 602 has multiple selectable forms, and the power distribution unit can be arranged at a more reasonable position, which is conducive to reducing the length of the high-voltage wire harness and further reducing the difficulty of the overall vehicle arrangement and increasing the space utilization rate of the chassis space.

[0047] In the above embodiment, the gas cylinder 200 is directly connected to the vehicle frame 500 by the binding belt 410, and is suspended by the binding belt 401, and does not need to be provided with the cubic frame for mounting the gas cylinder in the prior art, so that the weight of the vehicle-mounted hydrogen system 1000 in which the gas cylinder 200 is located can be greatly reduced. Since the weight of the vehicle-mounted hydrogen system 1000 is reduced, the overall consumption of the vehicle can be reduced, and the single cylinder can also be sufficient to support the operation of the vehicle.

[0048] By mounting the fuel cell 602 above the two vehicle body longitudinal beams 510 of the vehicle frame 500, and relatively mounting the gas cylinder 200 and the power battery 601 on the two vehicle body longitudinal beams 510, the components with the largest weight proportion in the power system of the vehicle chassis 10000, i.e., the gas cylinder 200, the power battery 601, and the fuel cell 602, are arranged in a triangular layout on the vehicle frame 500. In particular, the gas cylinder 200 and the power battery 601 are relatively arranged on the vehicle frame 500, and the fuel cell 602, the gas cylinder 200, and the power battery 601 are distributed in a substantially isosceles triangular shape, which is conducive to concentrating the vehicle center of gravity as much as possible in the low gravity center area of the vehicle frame 500. In this way, the overall gravity center position of the vehicle can be optimized, the driving stability and maneuverability can be significantly improved, the risk of rolling of the vehicle chassis 10000 is further reduced, and the overall dynamic performance of the vehicle is improved. In this way, the dynamic balance and torsional stiffness of the vehicle chassis 10000 are better in various driving conditions, and the driving comfort and safety of the vehicle are improved.

[0049] In particular, the fuel cell 602 as a chemical reaction site is located in the middle position, and the stability and collision safety are guaranteed. In some embodiments, the fuel cell 602 is located at the front end of the vehicle frame 500 and below the cab, and the controllability is stronger.

[0050] In some embodiments, as shown in FIG. 1, the binding belt 410 and the power battery 601 are respectively mounted on the vertical surfaces of the two vehicle body longitudinal beams 510 away from each other, and at least one vehicle body transverse beam 520 is arranged between the gas cylinder 200 and the power battery 601. In this way, the connection structure of the binding belt 410 and the power battery 601 can be simplified, and the occupied space is small. Moreover, the vehicle body transverse beam 520 is used to pull the inside of the two vehicle body longitudinal beams 510, balance the bending moment of the two ends, and equivalent to bearing at both ends of the vehicle body transverse beam 520, so as to achieve tension balance.

[0051] Specifically, the gas cylinder 200 is connected to the vehicle body longitudinal beam 510 only by the binding belt 410, instead of being first mounted on the vehicle frame by the cubic frame in the prior art, and then being fixed to the frame by the binding belt, that is, the cubic frame structure is saved, and the overall weight can be greatly reduced. At this time, since the overall weight is reduced, when the gas cylinder 200 is connected to the vehicle body longitudinal beam 510 only by the binding belt 410, the load at the connection between the binding belt 410 and the vehicle body longitudinal beam 510 is reduced, so that the connection firmness can also be guaranteed.

[0052] It can be understood that, in the prior art, the protection structure and the valve pipe structure of the gas cylinder 200 are relatively complex, resulting in large overall space occupation and large weight. After reasonable setting, the protection structure and the valve pipe structure of the gas cylinder 200 can also be designed to be lightweight, further ensuring the connection reliability of the gas cylinder 200 when the gas cylinder 200 is connected to the vehicle body longitudinal beams 510 through the binding belt 410.

[0053] In some embodiments, as shown in FIG. 1, the vehicle frame 500 includes at least two axles 530, the at least two axles 530 are arranged at intervals along the length direction of the vehicle body longitudinal beams 510, both ends of each axle 530 are connected to two vehicle body longitudinal beams 510, and each axle 530 is provided with wheels 540 at both ends. The gas cylinder 200 and the power battery 601 are located between the two axles 530, and the fuel cell 602 is installed above one axle 530.

[0054] It can be understood that the whole vehicle is finally supported on the ground by the wheels 540, so that the weight can be applied to the wheels 540 with a small bending moment, improving the overall dynamic balance.

[0055] On the side of the vehicle frame 500 where the power battery 601 is arranged, the center of gravity of the gas cylinder 200 and the contact points of the front and rear wheels 540 form a triangle. Since the gas cylinder 200 is hung on the vehicle frame 500, the center of gravity is relatively low, which is beneficial to improve the ground adhesion of the wheels 540. On the side of the vehicle frame 500 where the power battery 601 is arranged, the center of gravity of the power battery 601 and the contact points of the front and rear wheels 540 form a triangle. Since the power battery 601 is hung on the vehicle frame 500, the center of gravity is relatively low, which is beneficial to improve the ground adhesion of the wheels 540.

[0056] Specifically, the vehicle chassis 10000 further includes: at least one control unit 603 and at least one inverter 604, which are installed on the vehicle frame 500 and located between the two vehicle body longitudinal beams 510, and the control unit 603 and the inverter 604 are arranged in sequence along the extension direction of the vehicle body longitudinal beams 510. In this way, the overall height space can be reduced, and the wiring is convenient and orderly.

[0057] Further, the axle 530 away from the fuel cell 602 is an electric drive axle 531, and is connected to a drive motor 550. The control unit 603 includes a high-voltage control unit 6031, the high-voltage control unit 6031 is arranged adjacent to the electric drive axle 531, and the high-voltage control unit 6031 is connected to the drive motor 550. In this way, the length of the high-voltage wire harness can be greatly reduced, and the safety can be improved.

[0058] Still further, the vehicle chassis 10000 further includes: an air conditioning system 605, which is installed on the vehicle frame 500 and arranged adjacent to the fuel cell 602.

[0059] Optionally, the air conditioning system 605 comprises an air conditioning condenser 6051 mounted on the vehicle body longitudinal beam 510 and located on the same side as the power battery 601. In this way, heat exchange is facilitated, and the internal space of the vehicle frame 500 is not occupied, and the safety is improved because the condensed water on the surface of the air conditioning condenser 6051 does not flow to the electrical devices in the vehicle frame 600.

[0060] In some embodiments, the gas cylinder 200 comprises an inner container and a fiber composite material layer arranged on the surface of the inner container. In this way, the gas cylinder 200 has a certain self-adaptive expansion adjustment capability, on the one hand, the weight can be reduced, on the other hand, the pressure resistance is improved, and the high-pressure gas can be better carried, and the safety is high.

[0061] In some embodiments, as shown in FIGS. 3 and 4, the binding belt 410 surrounds the outside of the binding opening and fixes the gas cylinder 200, and the binding belt 410 is provided with an adjusting mechanism 450 for adjusting the size of the binding opening. The adjusting mechanism 450 enables the binding belt 410 to flexibly adapt to gas cylinders 200 of different sizes and shapes, ensuring that they can be securely fixed.

[0062] In actual use, when it is necessary to install or replace the gas cylinder 200, the user can adjust the binding belt 410 to a large-diameter binding opening through the adjusting mechanism 450. In this way, sufficient operation space is provided for the installation or replacement of the gas cylinder 200, making the whole process more convenient and efficient. Once the gas cylinder 200 is installed in place, the user can reduce the size of the binding opening through the adjusting mechanism 450 to adapt to the size of the gas cylinder 200. In this process, the binding belt 410 will closely fit the surface of the gas cylinder 200, forming a firm restraint on the gas cylinder 200. In this way, not only can the gas cylinder 200 be prevented from shaking or moving during driving, but also the collision between the gas cylinder 200 and the vehicle body can be avoided, ensuring the integrity and safety of the gas cylinder 200.

[0063] Referring to FIG. 8, the binding belt 410 comprises at least two binding sections 411 distributed in a ring shape, and the adjusting mechanism 450 connects adjacent two binding sections 411. In this way, the relative positions between the binding sections 411 can be changed through the adjusting mechanism 450, so as to adjust the size of the binding opening.

[0064] As shown in FIGS. 5 and 7, the adjusting mechanism 450 comprises an elastic member 451, and the adjusting mechanism 450 is an elastic adjusting mechanism. First, the arrangement of the elastic member 451 facilitates the application of a pre-tightening force to the gas cylinder 200, helping the binding belt 410 to better fit the outer shell of the gas cylinder 200, ensuring the preliminary fixing effect, and the pre-tightening force helps to maintain the stability of the gas cylinder 200, preventing it from loosening or moving during use.

[0065] In addition, in some embodiments, the binding belt 410 is used to bind the diameter self-adjustable gas cylinder 200, which expands or shrinks in use with the change of internal pressure. Therefore, using the binding belt 410 of the present disclosure, the expansion of the gas cylinder 200 can be absorbed, and as the gas in the gas cylinder 200 is slowly consumed, the binding belt 410 automatically reduces the size of the binding opening through the adjusting mechanism 450 to always bind the gas cylinder 200 tightly.

[0066] At the same time, during the driving of the vehicle, the gas cylinder 200 can be subjected to vibration. The elastic member 451 can absorb the energy of the vibration to reduce their influence on the binding belt 410 and the gas cylinder 200, thereby protecting the safety of the gas cylinder 200. In addition, the elastic adjusting mechanism 450 is provided, and the elastic member 451 can relieve the stress concentration of the binding belt 410 to a certain extent during the fastening process, thereby improving the service life of the binding belt 410 of the connecting structure 400.

[0067] In some alternative embodiments, the binding section 411 adopts a stainless steel bending and forming piece. This is because the stainless steel bending and forming piece has good ductility and better performance.

[0068] In some alternative embodiments, as shown in FIGS. 5 and 7, the adjusting mechanism 450 includes an adjusting rod 452 and an adjusting hole 454. The adjusting rod 452 is rotationally connected to one of the adjacent two binding sections 411, and the adjusting hole 454 is provided on the other binding section 411, and the adjusting rod 452 is fitted in the adjusting hole 454. One end of the elastic member 451 is connected to the adjusting rod 452, and the other end is connected to the binding section 411 provided with the adjusting hole 454.

[0069] The adjusting rod 452 serves as an adjusting tool, and by rotating the adjusting rod 452, the relative position between the adjacent two binding sections 411 can be changed, thereby realizing the size adjustment of the binding opening. The shape and size of the adjusting hole 454 are matched with the adjusting rod 452, and the adjusting hole 454 provides a movement track for the adjusting rod 452, and by rotating the adjusting rod 452 in the adjusting hole 454, the relative position change between the binding sections 411 can be controlled.

[0070] In some embodiments, as shown in FIG. 7, the end of the binding section 411 corresponding to the adjusting rod 452 is provided with a through hole 412. A connecting shaft 413 is arranged in the through hole 412, the connecting shaft 413 transversely passes through the through hole 412, and the middle part of the connecting shaft 413 is provided with a connecting hole matched with the adjusting rod 452. The adjusting rod 452 is arranged on the connecting shaft 413 through the connecting hole. The adjusting rod 452 is provided with a connecting nut 453, which is located on the side of the adjusting rod 452 away from the elastic member 451. Through this structure, the rotational connection between the adjusting rod 452 and the binding section 411 can be realized, and at the same time, by tightening or loosening the connecting nut 453, the connection tightness between the adjusting rod 452 and the corresponding binding section 411 can be adjusted.

[0071] In some optional embodiments, as shown in FIG. 7, the adjusting mechanism 450 further comprises an adjusting nut 455. The adjusting nut 455 is threadedly connected to the adjusting rod 452, and the elastic member 451 is a heavy cylindrical compression spring and sheaths the adjusting rod 452. One end of the elastic member 451 abuts against the adjusting nut 455, and the other end abuts against the binding section 411 provided with the adjusting hole 454.

[0072] Due to the threaded connection between the adjusting nut 455 and the adjusting rod 452, the operator can accurately control the fastening degree of the binding belt 410 by simply rotating the adjusting nut 455. This adjusting method is not only convenient and easy to use, but also can provide sufficient adjusting range to adapt to gas cylinders 200 of different sizes and shapes.

[0073] In some optional embodiments, as shown in FIG. 7, the adjusting hole 454 is a long hole. This setting is to adapt to the circumferential shortening phenomenon of the binding belt 410 during the adjustment of tightness. When the tightness of the binding belt 410 needs to be adjusted, the binding belt 410 will be shortened or lengthened along its circumference. At this time, the adjusting rod 452 needs to be able to move along the radial direction of the binding belt 410. Therefore, designing the adjusting hole 454 as a long hole shape can adapt to the position change of the adjusting rod 452, avoiding interference.

[0074] In some optional embodiments, the inner side wall of the adjusting hole 454 is provided with a lubricating film layer. The lubricating film forms a separation layer on the inner side wall of the adjusting hole 454, reducing the frictional resistance when the adjusting rod 452 slides in the adjusting hole 454, thereby improving the smoothness and efficiency of the adjustment. The lubricating film layer also has the effect of preventing wear and tear and prolonging the service life. Whether the adjusting rod 452 slides in the adjusting hole 454 or the adjusting rod 452 collides in the adjusting hole 454 due to external force, when the two directly contact, wear and tear is easy to occur. At this time, the lubricating film layer can reduce wear and tear, protect the surface of the adjusting rod 452 and the inner side wall of the long hole from being damaged, thereby prolonging the service life of the entire adjusting mechanism 450.

[0075] Optionally, as shown in FIG. 4 and FIG. 8, the binding belt 410 comprises an upper binding belt and a lower binding belt. The inner end of the lower binding belt is used for fixedly connecting the vehicle body longitudinal beam 510, the inner end of the lower binding belt and the inner end of the upper binding belt are rotationally connected, and the adjusting mechanism 450 is arranged between the outer end of the upper binding belt and the outer end of the lower binding belt. The rotationally connected upper binding belt and lower binding belt can increase the opening and closing angle, which can ensure that the binding belt 410 closely fits the surface of the gas cylinder 200, provide sufficient fastening force, and ensure the stability and safety of the gas cylinder 200.

[0076] In addition to adapting to different sizes of gas cylinders 200, the rotational connection also improves the convenience of installing and dismounting the straps 410. By rotating the upper strap and the lower strap relative to each other, the operator can easily fix the straps 410 on the gas cylinder 200 or quickly dismount the straps 410 as needed, which not only improves work efficiency but also reduces operation complexity, making the use of the straps 410 more convenient and efficient.

[0077] In some optional embodiments, as shown in FIGS. 4-8, the straps 410 are provided with skin fixing portions 414 at the skin fixing positions on one side, which extend along the axial direction of the straps 410 and are spaced apart from the adjusting mechanism 450, for connecting the skin side plates 422 of the protective skin 420. The skin fixing portions 414 can enhance the connection area between the skin side plates 422 and the straps 410, ensuring the protection of the gas cylinder 200 by the skin side plates 422. In some embodiments, as shown in FIG. 3, the connection structure 400 further comprises a skin 420 connected to the straps 410, at least part of which is located on the side of the gas cylinder 200 away from the vehicle frame 500. In this way, a frame structure for protecting the gas cylinder 200 is formed.

[0078] Optionally, the skin 420 is made of a material resistant to wear and corrosion. Such a material can resist damage to the gas cylinder 200 in some harsh environments. In addition, the skin 420 can also be customized according to specific needs, such as using fireproof materials to improve fireproof performance, or using insulating materials to prevent static electricity accumulation, etc.

[0079] At the same time, the skin 420 has a certain elasticity and toughness, such as polyester fabric, nylon fabric, high-performance engineering plastic fabric, carbon fiber fabric, or glass fiber fabric, etc. This is because the fabric can adaptively adjust with the shape and size changes of the gas cylinder 200. Whether it is a circular, elliptical or other irregularly shaped gas cylinder 200, the skin 420 can be fitted on its surface to form a protective layer. This adaptive adjustment capability not only enhances the protection effect of the skin 420, but also enables it to adapt to gas cylinders 200 of various shapes, thereby helping to improve the adaptability of the skin 420.

[0080] In some optional embodiments, the skin 420 is an aluminum alloy plate. Due to the light weight, high strength and good corrosion resistance of the aluminum alloy plate, it is suitable for various scenarios that require protection and support. When the aluminum alloy plate is applied in the skin 420, the aluminum alloy plate not only provides the necessary structural strength, but also ensures the overall light weight, reduces the energy consumption of the vehicle chassis, and is beneficial to improve the endurance of the vehicle chassis. Further, the surface of the skin 420 is provided with a protective film layer. This protective film layer can reduce the erosion of the skin 420 by the external environment, such as chemical corrosion. In addition, the protective film layer can also increase the wear resistance and impact resistance of the skin 420, thereby prolonging its service life.

[0081] In some specific embodiments, as shown in FIGS. 3 and 5, the skin 420 includes: a skin side plate 422 blocking the side of the binding belt 410 away from the vehicle body longitudinal beam 510, and a skin bottom plate 421 connecting the lower edges of the skin side plate 422. Thus, the skin bottom plate 421 and the skin side plate 422 construct a structure similar to an “L” shape, forming a semi-enclosed protective space, and the gas cylinder 200 is arranged in the “L” shaped structure to improve the protection of the side and bottom of the gas cylinder 200.

[0082] In some embodiments, as shown in FIG. 4, the connecting structure 400 further includes a support rod 430 for supporting the skin 420, specifically, the skin bottom plate 421 connects the support rod 430 and the binding belt 410. The double fixation of the support rod 430 and the binding belt 410 can enhance the adhesion and stability of the skin bottom plate 421. Especially when the skin 420 adopts a soft material piece, due to the influence of gravity and external environmental factors, etc., the skin bottom plate 421 is prone to sagging. At this time, the support rod 430 and the binding belt 410 provide uniform support and stable binding for the skin bottom plate 421 through double fixation, reduce the sagging of the skin bottom plate 421, and ensure the effective protection of the bottom of the gas cylinder 200.

[0083] In addition, this double fixation method also helps to reduce unnecessary contact or interference between the skin bottom plate 421 and other vehicle-mounted components. By maintaining the stable position of the skin bottom plate 421, the friction or collision with other components is reduced, thereby protecting the overall safety and stable operation of the vehicle-mounted hydrogen system 1000. In this way, the reliability of the skin 420 is improved, and the service life of the vehicle-mounted hydrogen system 1000 is prolonged.

[0084] The skin side plate 422 is connected to the band 410. In this way, the skin side plate 422 is stably connected to the gas cylinder 200, ensuring that the skin side plate 422 can be stably positioned on the side of the gas cylinder 200 and effectively protect it. In addition, when the skin side plate 422 is made of a flexible material, the connection between the skin side plate 422 and the band 410 can be disassembled when the gas cylinder 200 needs to be viewed. In this way, the skin side plate 422 can be flipped down, which not only facilitates the viewing of the gas cylinder 200, but also avoids the need to disassemble the entire skin 420, greatly improving operational efficiency and convenience.

[0085] As shown in FIG. 5, the skin 420 is provided with an adjusting opening 423 opposite the adjusting mechanism 450. By providing the adjusting opening 423, the adjusting mechanism 450 is exposed to the outside, so that when the size of the binding opening needs to be adjusted, the operator can conveniently operate the adjusting mechanism 450, further improving the convenience of using the connecting structure 400.

[0086] Specifically, as shown in FIGS. 3 and 5, the edges of the skin 420 are suspended except for the connection with the band 410. In this way, only one support rod 430 is needed to achieve overall support of the frame.

[0087] Further, the skin bottom plate 421 is suspended except for the connection with the support rod 430 and the band 410. This design ensures that the skin bottom plate 421 is stably connected to the gas cylinder 200, while ensuring the comprehensiveness and effectiveness of protection, simplifying the installation steps and improving work efficiency. In addition, this design also helps to reduce manufacturing costs.

[0088] In this way, the number of connection points between the skin side plate 422 and the band 410 can be reduced, thereby reducing the installation steps. At the same time, the suspended skin side plate 422 reduces the direct contact area with the gas cylinder 200, increases the space for air flow around the gas cylinder 200, and makes it easier for heat and leaked hydrogen to dissipate into the environment, which helps to dissipate heat from the gas cylinder 200 and the surrounding components, reduces the accumulation of leaked hydrogen, and further ensures the safety and reliability of the vehicle-mounted hydrogen system 1000.

[0089] The support rod 430 is one and is located at the lower end of the skin side plate 422. While achieving the connection of the support rod 430 to the skin 420, by setting it inside the lower end arc of the skin side plate 422, it can be ensured that the support rod 430 does not occupy too much space around the gas cylinder 200, thereby reducing the possibility of position conflict with the gas cylinder 200.

[0090] The arc-shaped transition connection between the skin side plate 422 and the skin bottom plate 421 can better disperse and withstand external impact force, reduce stress concentration, improve the impact resistance of the skin 420, enhance the overall strength of the skin 420, and reduce the space occupancy.

[0091] Secondly, due to the arc-shaped transition, air can flow more smoothly through the arc-shaped transition connection of the skin 420, taking away the heat accumulated between the skin 420 and the gas cylinder 200, which helps to maintain the appropriate working temperature of the vehicle-mounted hydrogen system 1000 and prevent overheating.

[0092] Specifically, as shown in FIG. 5, the adjusting port 423 is located at the connection between the skin side plate 422 and the skin bottom plate 421. By lowering the position of the adjusting port 423, the height of the skin side plate 422 can be reduced, and thus the side area of the skin side plate 422 can be reduced. In this way, the skin 420 can be more compact, the use of materials can be effectively reduced, and thus the overall cost of the skin 420 can be reduced. At the same time, the weight of the skin 420 can be reduced, and thus the weight of the vehicle chassis can be reduced, and the hydrogen energy utilization rate can be improved.

[0093] In some embodiments, as shown in FIG. 3, the upper end of the skin side plate 422 forms a curved section 424 extending upward and gradually toward the strap 410. In this way, the curved section 424 extends toward the gas cylinder 200, so that the skin side plate 422 can more effectively wrap the gas cylinder 200, increase the protection area of the skin side plate 422 to the gas cylinder 200, and improve the stability of the gas cylinder 200 in the vehicle-mounted hydrogen system 1000. At the same time, the curved section 424 can also improve the adaptability to the gas cylinder 200 with self-adjustable diameter. In some optional embodiments, when it is necessary to view or maintain the gas cylinder 200, the connection between the strap 410 and the skin side plate 422 can be simply released, so that the skin side plate 422 can be flexibly lifted downward. Such a design not only facilitates the viewing of the surface appearance of the gas cylinder 200, but also avoids disassembling the entire skin 420, and improves the convenience of maintenance.

[0094] In some embodiments, as shown in FIG. 6, the support rod 430 includes at least three sub-rod sections 431 spaced apart by the strap 410, and the end portions of the sub-rod sections 431 are fixedly connected to the strap 410 in the axial direction.

[0095] The split rod segments 431 not only make installation and disassembly easier, but also effectively control manufacturing costs, because each segment can be manufactured separately and combined as needed, avoiding unnecessary material waste. If a split rod segment 431 needs to be replaced, only the segment needs to be replaced, without replacing the entire support rod 430. This modular maintenance method can save maintenance time and labor costs. Moreover, the end surface of the split rod segment 431 after being processed separately occupies less space, which is conducive to reducing the overall size of the connection structure 400, and facilitates the setting of a rounded corner transition connection at the connection between the skin bottom plate 421 and the skin side plate 422.

[0096] The two outermost split rod segments 431 in the axial direction are fixedly connected to the binding band 410 at one end and are cantilevered at the other end. The two outermost split rod segments 431 in the axial direction can increase the connection area of the skin 420. Since the two split rod segments 431 correspond to the two ends of the gas cylinder 200, they can set the skin 420 at the end of the gas cylinder 200, thereby effectively protecting the end of the gas cylinder 200 and other components around the end.

[0097] In addition, the cantilevered rod also provides a certain flexibility for the skin 420, which can adapt to gas cylinders 200 of different shapes and sizes. By adjusting the length and angle of the cantilevered rod, the protective effect of the skin 420 on the gas cylinder 200 can be ensured.

[0098] As shown in FIGS. 3-5, the support rod 430 is connected to the binding band 410, and the support rod 430 extends along the axial direction of the binding band 410. The support rod 430 is provided with a skin connecting piece 432. The support rod 430 is a single rod, so that the entire connection structure 400 forms a single-rod protection structure, ensuring overall stability and rigidity. The single-rod protection structure is simple in structure, easy to install, and good in consistency after installation.

[0099] Optionally, the support rod 430 is made of a high-strength material rod. The support rod 430 includes, but is not limited to, for example, a carbon steel rod, a stainless steel rod, an aluminum alloy rod, a titanium alloy rod, a carbon fiber rod, a glass fiber composite material rod, etc.

[0100] The skin 420 is connected to the skin connecting piece 432. As shown in FIGS. 9 and 10, the skin connecting piece 432 further includes a bottom connecting plate 4301 and a side connecting plate 4302. The bottom connecting plate 4301 is horizontally arranged and connected to the skin bottom plate 421. The side connecting plate 4302 is vertically arranged and connected to the bottom connecting plate 4301 at the lower edge. The upper end of the side connecting plate 4302 is connected to the rod body portion of the support rod 430.

[0101] The bottom connecting plate 4301 is provided to ensure the stable connection between the skin bottom plate 421 and the support rod 430, and also provides a support and connection basis for the side connecting plate 4302.

[0102] In some optional embodiments, as shown in FIG. 9 and FIG. 10, the rod body part of the support rod 430 is a round rod, and the skin connecting piece 432 comprises a first arc plate 4303, which is sleeved on the outer side of the rod body part and is weldedly connected. The lower end of the first arc plate 4303 is connected to the upper end of the side connecting plate 4302. The first arc plate 4303, the side connecting plate 4302 and the bottom connecting plate 4301 are integrally formed by bending.

[0103] The inner side of the first arc plate 4303 is matched with the outer peripheral wall of the round rod, which not only improves the tightness of the connection between the skin connecting piece 432 and the rod body part, but also effectively prevents the skin connecting piece 432 from loosening under vibration or impact.

[0104] It is worth noting that the first arc plate 4303, the side connecting plate 4302 and the bottom connecting plate 4301 in the skin connecting piece 432 are integrally formed by bending. This is conducive to simplifying the manufacturing process, and in addition, it improves the overall strength and stability of the skin connecting piece 432, providing a reliable guarantee for the safe operation of the vehicle-mounted hydrogen system 1000.

[0105] In some optional embodiments, the skin connecting piece 432 further comprises a connecting reinforcing rib 4304 provided on the bottom connecting plate 4301, which is arranged perpendicularly to the rod body part and is weldedly connected to at least one of the bottom connecting plate 4301 and the side connecting plate 4302.

[0106] The connecting reinforcing rib 4304 plays a role in supporting and enhancing the strength of the skin connecting piece 432, which can effectively prevent the skin connecting piece 432 from deforming due to external force, thereby ensuring the stability and reliability of the connection. In addition, the connecting reinforcing rib 4304 also plays a certain limiting role for the support rod 430. This limiting role makes the support rod 430 more stable during use, effectively avoiding possible shaking and deformation, thereby further improving the stability and safety of the entire single-rod protection structure 10.

[0107] For example, the connecting reinforcing rib 4304 is weldedly connected to the rod body part. Since the connecting seam between the rod body part and the connecting reinforcing rib 4304 is flat, welding is conducive to welding operation. Alternatively, the connecting reinforcing rib 4304 is weldedly connected to the side connecting plate 4302. In use, the connecting reinforcing rib 4304 has good support effect on the side connecting plate 4302, improving the support strength of the connecting reinforcing rib 4304 on the side connecting plate 4302. Alternatively, in order to achieve the best support strength, the connecting reinforcing rib 4304 can also be weldedly connected to both the rod body part and the side connecting plate 4302.

[0108] In some embodiments as shown in FIG. 9 and FIG. 10, the skin connector 432 further comprises a connecting hole for connecting the skin 420. The connecting hole is formed on the bottom connecting plate 4301.

[0109] The connecting hole fixes the skin connector 432 to the skin 420 by appropriate fasteners such as bolts, nuts, etc., thereby achieving a firm connection between the skin connector 432 and the skin 420.

[0110] According to the connecting structure 400 of some embodiments of the present disclosure, the skin side plate 422 and the skin bottom plate 421 are an integral bent forming piece. The integral bent forming piece not only simplifies the manufacturing process, but also reduces potential failure points by reducing the area of the connection. Traditional connecting structures usually contain independent components that need to be connected together by bolts, welding or other means. However, such connection is prone to looseness under vibration or impact, thereby affecting the sealing and protection effect of the connection. The integral bent forming piece eliminates the stress concentration at the connection, reducing the risk of failure due to loosening of the connecting piece. At the same time, the integral structure is also conducive to enhancing the overall strength and rigidity of the skin 420, so that it can better resist external impact and vibration.

[0111] As shown in FIG. 3, in some embodiments, the skin 420 further comprises a skin end plate 425. The skin end plate 425 is located at at least one end of the skin bottom plate 421 in the length direction, and the lower edge of the skin end plate 425 is connected to the skin bottom plate 421 and the side edge is connected to the skin side plate 422. The skin end plate 425 connects the skin bottom plate 421 and the skin side plate 422, which not only can disperse external force to the entire skin 420 structure, rather than just concentrating on a certain point, thereby effectively reducing the stress burden of a single part. At the same time, the skin end plate 425 can also enhance the overall rigidity of the skin 420. When subjected to external force impact, the skin end plate 425 can prevent excessive relative displacement or deformation between the skin bottom plate 421 and the skin side plate 422, maintaining the shape and structural stability of the entire skin 420.

[0112] The skin end plate 425, the skin side plate 422 and the skin bottom plate 421 are an integral bent forming piece, and the skin end plate 425 is welded to one of the skin side plate 422 and the skin bottom plate 421.

[0113] Specifically, one side edge of the skin end plate 425 is a bent edge connected with the skin side plate 422, and the other side edge of the skin end plate 425 is welded with the skin bottom plate 421. Specifically, the bottom side edge of the skin end plate 425 is integrally formed with the skin bottom plate 421, and the vertical side edge of the skin end plate 425 is welded with the skin side plate 422. Alternatively, the vertical side edge of the skin end plate 425 is integrally formed with the skin side plate 422, and the bottom side edge of the skin end plate 425 is welded with the skin bottom plate 421. In this way, the skin end plate 425, the skin side plate 422, and the skin bottom plate 421 can be formed by bending an integral plate and then welded together, and after being connected together, a semi-frame structure with stable shape is formed. This arrangement ensures that the connection between the skin end plate 425 and the skin bottom plate 421 or the skin side plate 422 has high structural integrity and stability. At the same time, since the skin end plate 425, the skin side plate 422, and the skin bottom plate 421 are integrally formed, complex debugging work is not required, production costs and manufacturing cycle are reduced, and the skin 420 becomes more convenient and efficient during manufacturing.

[0114] The skin side plate 422 and / or the skin bottom plate 421 is provided with a reinforcing rib. The reinforcing rib helps to improve the overall structural strength and stability of the skin 420. The reinforcing rib is provided on the skin side plate 422 or the reinforcing rib is provided on the skin bottom plate 421. In some embodiments, the reinforcing rib is provided on the skin side plate 422 and the skin bottom plate 421, and the reinforcing rib extends from the skin side plate 422 to the skin bottom plate 421. This arrangement not only enhances the strength of the skin side plate, but also enhances the support capacity of the skin bottom plate, so that the skin 420 can maintain its original shape and protection function under complex road conditions, providing continuous and reliable protection for the vehicle-mounted hydrogen system 1000.

[0115] In some embodiments, as shown in FIG. 11, the hydrogen filling structure 2 includes a cantilever rod 201, a rod end fixing portion 202, and a hydrogen filling module 203. The rod end fixing portion 202 is connected to one end of the cantilever rod 201 and is used to be fixed on the vehicle body longitudinal beam 510. The hydrogen filling module 203 is connected to the other end of the cantilever rod 201.

[0116] In the related art, the hydrogen filling mounting structure and the hydrogen storage system share a bracket, and the bracket of the hydrogen storage system needs to be additionally designed to support the arrangement of the hydrogen filling mounting structure, which increases the envelope size of the hydrogen storage system, increases the space volume of the vehicle-mounted hydrogen system, increases the occupation of the space of the whole vehicle, and is not conducive to the arrangement of the vehicle-mounted hydrogen system.

[0117] The gas filling structure 2 in the embodiments of the present disclosure is fixed on the vehicle body longitudinal beam 510 of the vehicle chassis 10000. Compared with arranging the hydrogen filling structure on the hydrogen storage system, the present disclosure connects the gas filling structure 2 and the gas cylinder 200 with the vehicle body longitudinal beam 510 respectively, and the gas filling structure 2 and the gas cylinder 200 are arranged in a split mode, which can reduce the envelope size of the gas cylinder 200, reduce the space occupancy of the vehicle-mounted hydrogen system 1000, and facilitate the arrangement of the vehicle-mounted hydrogen system 1000.

[0118] The cantilever rod 201 is provided with at least one bending portion 2011, and the hydrogen filling module 203 is higher than the rod end fixing portion 202. The rod end fixing portion 202 is used to stably connect the gas filling structure 2 with the vehicle body longitudinal beam 510. The hydrogen filling module 203 is provided with a connecting interface for hydrogen fuel filling. One end of the cantilever rod 201 is connected with the rod end fixing portion 202, and the other end of the cantilever rod 201 is connected with the hydrogen filling module 203, so as to stably connect the hydrogen filling module 203 with the vehicle body longitudinal beam 510, and ensure the safety during the hydrogen fuel filling process.

[0119] Meanwhile, the hydrogen filling module 203 can be arranged according to the vehicle body structure. On the one hand, by selecting the bending angle of the bending portion 2011, the length of the cantilever rod 201 and the height of the cantilever rod 201, the space occupancy of the gas filling structure 2 can be reduced, and the interference with other elements can be improved. On the other hand, the structure of the cantilever rod 201 can be selected according to the vehicle body structure, so that the gas filling structure 2 can be adapted to various types of vehicle body longitudinal beams 510, and the application range of the gas filling structure 2 is improved. By providing the bending portion 2011, the structural strength of the cantilever rod 201 can be improved, and the arrangement stability of the gas filling structure 2 can be improved.

[0120] The gas filling structure 2 is fixed on the vehicle body longitudinal beam 510, and the height of the vehicle body longitudinal beam 510 is low. By arranging the hydrogen filling module 203 to be higher than the rod end fixing portion 202 through the cantilever rod 201, the position of the hydrogen filling module 203 can be more convenient for connecting the gas filling gun, the filling of hydrogen fuel is facilitated, and the filling efficiency is improved.

[0121] In some embodiments of the present disclosure, as shown in FIG. 11, the hydrogen filling module 203 is further provided with an anti-static sheet 204 for conducting static electricity and reducing the risk of combustion and explosion caused by static electricity. The anti-static sheet 204 is a bending type anti-static sheet 204 with bending, which can simplify the structure of the anti-static sheet 204, improve the structural strength of the anti-static sheet 204, and facilitate the installation of the anti-static sheet 204. Moreover, by adjusting the installation direction of the anti-static sheet 204, the size of the hydrogen filling module 203 can be saved, and the occupancy of the external space can be reduced.

[0122] Optionally, the anti-static sheet 204 is fixedly connected with the hydrogen filling panel 31 through an M6 bolt assembly.

[0123] In some embodiments, as shown in FIG. 12, the vehicle-mounted hydrogen system 1000 further comprises a bottle mouth end fixing device 7 for fixing on the bottle mouth end 210 of the gas cylinder 200.

[0124] Specifically, the vehicle-mounted hydrogen system 1000 further comprises a hoop 71, which is annular and surrounds an annular opening, and which is sleeved on and clamped on the bottle mouth end 210 of the gas cylinder 200, and one end of the gas pipe 51 is mounted on the hoop 71.

[0125] Specifically, the bottle mouth end fixing device 7 further comprises at least one mounting portion 72, which is provided on the hoop 71 and is connected to the gas pipe to fix the gas pipe. That is, the hoop 71 fixes the bottle mouth end fixing device 7 as a whole on the gas cylinder 200, and then the mounting portion 72 is used to fix the gas pipe. In this way, the gas pipe is fixed as a whole with the gas cylinder 200 through the bottle mouth end fixing device 7, which improves the overall structural strength and rigidity, reduces the shaking amplitude of the vehicle-mounted hydrogen system 1000 during operation, improves the safety and reliability of the overall vehicle chassis 10000 during driving, and reduces the risk of gas leakage.

[0126] Since the mounting portion 72 is used to fix the gas pipe, the number and position of the gas pipe fixed by the mounting portion 72 are not limited. In addition, the structure and position of the mounting portion 72 on the hoop 71 can also be flexibly set.

[0127] For example, the mounting portion 72 can be detachably arranged on the hoop 71, so that the number of mounting portions 72 can be selected. For example, the same bottle mouth end fixing device 7 can be arranged on multiple vehicle-mounted hydrogen systems 1000, and the number of mounting portions 72 can be selected according to the number of gas pipes for each vehicle-mounted hydrogen system 1000.

[0128] The mounting portion 72 can be detachably arranged on the hoop 71, which can also improve the convenience of installation of the vehicle-mounted hydrogen system 1000 to a certain extent. For example, some mounting portions 72 are in the form of a sleeve, which can be detachably connected to the hoop 71 after sleeving the gas pipe. When the gas pipe needs to be detached, the sleeve can be detached to loosen the gas pipe, thereby facilitating the assembly and maintenance of the gas pipe.

[0129] For another example, the position of the mounting portion 72 on the hoop 71 can be adjusted, so that the fixed position of each gas pipe by the mounting portion 72 can be adjusted as needed, thereby improving the adaptability and flexibility of the use of the bottle mouth end fixing device 7.

[0130] In some embodiments, as shown in FIG. 12, the hoop 71 encloses a ring-shaped opening, and the circumference of the ring-shaped opening is adjustable. Specifically, the hoop 71 comprises clamping plates 711, and there are at least two clamping plates 711 arranged along the ring direction of the ring-shaped opening, i.e., the at least two clamping plates 711 enclose the mouth end 210 of the gas cylinder 200. Then, a clamping plate connector 712 is connected between adjacent two clamping plates 711, and the ring-shaped opening is enclosed by the at least two clamping plates 711 and the clamping plate connector 712. The clamping plate connector 712 is used to adjust the size of the gap between the adjacent two clamping plates 711, so as to adjust the circumference of the ring-shaped opening. Taking the clamping plate connector 712 as a bolt as an example, when the caliber of the gas cylinder 200 is large, the bolt rod between the adjacent two clamping plates 711 can be left long, so that the circumference of the ring-shaped opening becomes large. When the caliber of the gas cylinder 200 is small, the bolt rod between the adjacent two clamping plates 711 can be left short, so that the circumference of the ring-shaped opening becomes small.

[0131] The hoop 71 is formed by the clamping plates 711, and has large structural strength, can be connected at multiple positions, has strong bearing capacity, and has small deformation.

[0132] Further, the mouth end fixing device 7 further comprises an extension plate 73, one end of the extension plate 73 is connected to the hoop 71, and the other end of the extension plate 73 is connected to the mounting portion 72, so as to improve the setting flexibility of the mounting portion 72 and reduce the overall occupied space.

[0133] In some embodiments, as shown in FIG. 12, the vehicle-mounted hydrogen system 1000 further comprises a mouth end integrated valve 1, a pressure reducing valve 31, a gas supply pipe 51, and an exhaust pipe 53.

[0134] The mouth end integrated valve 1 is used to be mounted on the mouth end 210 of the gas cylinder 200, and the mouth end integrated valve 1 is provided with a gas inlet 101, a gas outlet 102, and a relief port 103 for communicating the inside of the gas cylinder 200. The hydrogenation module 203 is used to communicate with the high-pressure hydrogen source, and the hydrogenation module 203 is connected to the gas inlet 101 through a gas inlet connecting pipe 57. One end of the pressure reducing valve 31 is connected to the gas outlet 102 through a pressure reducing connecting pipe 58, the other end of the pressure reducing valve 31 is connected to the gas supply pipe 51, and the gas supply pipe 51 is used to be connected to the fuel cell 602. One end of the exhaust pipe 53 is used to communicate with the atmosphere, and the other end of the exhaust pipe 53 is connected to the relief port 103, the other end of the pressure reducing valve 31, and the gas supply pipe 51 through a relief connecting pipe 61.

[0135] That is, by setting the bottle mouth integrated valve 1 at the bottle mouth end 210 of the gas cylinder 200, when setting the gas inlet, the hydrogenation module 203 is directly connected to the bottle mouth integrated valve 1 through the gas inlet connecting pipe 57, and no additional gas inlet connecting pipe 57 is needed between the hydrogenation module 203 and the pressure reducing valve 31, thereby reducing the number of gas inlet connecting pipes 57. When the gas pressure in the gas cylinder 200 is too high, or the gas pressure in the gas supply pipe 51 is too high, the high-pressure gas can be discharged through the discharge connecting pipe 61 to the exhaust pipe 53, and then discharged to the atmosphere, so that the gas pressure in the cylinder or the pipe is kept stable. When maintenance is needed, the gas in the gas cylinder 200 and the gas in the gas supply pipe 51 can be discharged through the discharge connecting pipe 61 to the exhaust pipe 53, so that the hydrogen gas in the gas cylinder 200 and the gas supply pipe 51 is exhausted, which facilitates the use of tools for inspection and repair (for example, using a welding gun to reinforce local welds), improves the convenience of maintenance, and reduces safety hazards.

[0136] In the present disclosure, by setting the bottle mouth integrated valve 1, the parts originally needed to be set on the gas pipe can be integrated into the bottle mouth integrated valve 1, reducing the number of parts needed to be connected on the external gas pipe and the number of gas pipes that need to be cut off.

[0137] Specifically, as shown in FIG. 12, the gas inlet 101, the gas outlet 102, and the discharge port 103 are arranged on the outer circumferential surface of the bottle mouth integrated valve 1 and are spaced apart along the circumferential direction. In this way, when three gas pipes are connected, the part of the three gas pipes connecting the bottle mouth integrated valve 1 can be arranged in the flat space where the bottle mouth integrated valve 1 is located, which is conducive to improving the space utilization and further reducing the space occupied by the vehicle-mounted hydrogen system 1000.

[0138] In some embodiments, as shown in FIG. 13, the vehicle-mounted hydrogen system 1000 further includes a bottle tail valve 32 and a bottle body connecting pipe 55. The bottle tail valve 32 is used to be installed at the bottle tail end 220 of the gas cylinder 200, and the bottle tail valve 32 is provided with a tail port 321 for communicating the inside of the gas cylinder 200. One end of the bottle body connecting pipe 55 is connected to the tail port 321, and the other end of the bottle body connecting pipe 55 is connected to the exhaust pipe 53. In this way, when there is a risk in the gas cylinder 200 or when maintenance is needed, high-pressure gas can flow from the bottle tail end 220 of the gas cylinder 200 through the bottle tail valve 32 and the bottle body connecting pipe 55 to the exhaust pipe 53. In this way, while improving the exhaust safety of the gas cylinder 200, the number of exhaust pipes 53 is reduced. In particular, the exhaust pipe 53 needs to discharge gas upward, and the upper part of the exhaust pipe 53 is usually higher, so the bottle tail end 220 of the gas cylinder 200 does not need to be provided with an additional exhaust pipe 53, and does not need to be provided with excessive exhaust pipe avoiding structures or exhaust pipe fixing structures.

[0139] Here, the structure of the bottle tail valve 32 itself can adopt the structure of the bottle tail valve 32 known in the prior art, and this structure will not be described here.

[0140] Specifically, as shown in FIG. 12, the relief connecting pipe 61 comprises a first relief sub-pipe 611, one end of which is connected to the bottle body connecting pipe 55 and the other end of which is connected to the gas supply pipe 51. The vehicle-mounted hydrogen system 1000 further comprises a first manual valve 33 connected in series on the first relief sub-pipe 611. That is, by manually opening the first manual valve 33, the gas in the gas supply pipe 51 can be manually forced to be discharged from the exhaust pipe 53. In this way, the gas pipe connection tightness is improved, and the number of gas pipes is reduced in the case of setting the bottle tail exhaust structure.

[0141] In this way, by setting the first manual valve 33 on the first relief sub-pipe 611 and manually controlling the opening, the accuracy of the relief exhaust is improved, and the possibility of misoperation caused by electromagnetic control is reduced.

[0142] Of course, in other embodiments of the present disclosure, an electrically controlled valve can also be used to replace the first manual valve 33 in some schemes.

[0143] In some embodiments, as shown in FIG. 12, the bottle mouth integrated valve 1 comprises a second manual valve 11 arranged at the relief port 103, and the relief connecting pipe 61 comprises a second relief sub-pipe 612, one end of which is connected to the relief port 103 and the other end of which is connected to the exhaust pipe 53. That is, by manually opening the second manual valve 11, the gas in the gas cylinder 200 can be manually forced to be discharged from the exhaust pipe 53 through the relief port 103. The second manual valve 11 needs to be manually controlled to open, which is beneficial to improve the accuracy of the relief exhaust of the gas cylinder 200 and reduce the possibility of misoperation caused by electromagnetic control.

[0144] In some embodiments, as shown in FIG. 12, a section of the gas supply pipe 51 is a hose section 511. It can be understood that the gas supply pipe 51 needs to be connected to the fuel cell 602. It can be understood that the fuel cell 602 has a different vibration frequency from the gas cylinder 200 due to internal structural factors. Moreover, the fuel cell 602 is usually installed above the vehicle frame 500, and the gas cylinder 200 is suspended, and the vibration amplitudes generated by the two in vibration are also different. Therefore, a section of the gas supply pipe 51 connected between the two is a hose section 511, which is beneficial to balance the difference in vibration frequency and vibration amplitude between the two, thereby reducing the internal stress borne by the gas supply pipe 51 and reducing the risk of leakage caused by breakage.

[0145] Specifically, a section of the gas supply pipe 51 connected to the pressure relief valve 31 is a hose section 511, and the hose section 511 itself has a buffering capacity. By arranging the hose section 511 at one end connected to the pressure relief valve 31, the hose section 511 can buffer the pressure relief as soon as the gas is discharged after being reduced in pressure, which is beneficial to the subsequent stabilization of the gas through the gas supply pipe 51 and the introduction into the fuel cell 602.

[0146] Specifically, the section of the exhaust pipe 53 connected to the bottle mouth integrated valve 1 is a hose section 511, and the material of the hose section 511 itself has a buffering capacity, which is beneficial to reduce the stress in the exhaust pipe 53, especially when the exhaust pipe 53 is usually high, the shaking range of the upper and lower ends is relatively large, and the hose section 511 is beneficial to absorb vibration and reduce the risk of breakage.

[0147] By arranging the vehicle-mounted hydrogen system 1000, the pipeline connection structure of the vehicle-mounted hydrogen system 1000 as a whole is simple, the weight can be reduced, the installation process is complex, and the occupied space is reduced, and the risk of system leakage is reduced.

[0148] In the description of the present disclosure, it should be understood that the terms "center", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0149] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0150] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0151] In the present disclosure, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0152] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0153] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present disclosure, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A vehicle chassis, wherein, include: A chassis, the chassis including two longitudinal beams and a crossbeam connecting the two longitudinal beams; A connecting structure is located on one lateral side of the vehicle frame. The connecting structure includes straps, at least two of which are spaced apart along the length of the vehicle body longitudinal beam. The straps are mounted on one of the vehicle body longitudinal beams. A gas cylinder, wherein the gas cylinder is one and is arranged along the extension direction of the longitudinal beam of the vehicle body, and the gas cylinder is installed in at least two of the straps; A power battery is located on the other side of the vehicle frame and is opposite to the gas storage tank. The power battery is mounted on another longitudinal beam of the vehicle body. The fuel cell is mounted on the vehicle frame and located above the two longitudinal beams of the vehicle body. The fuel cell is connected to the gas storage tank via a gas supply pipe, and the output end of the fuel cell is electrically connected to the power battery.

2. The vehicle chassis according to claim 1, wherein, The straps and the power battery are respectively mounted on the vertical surfaces of the two vehicle body longitudinal beams that are far from each other, and at least one vehicle body cross beam is arranged between the gas storage tank and the power battery. The gas cylinder is connected to the vehicle body longitudinal beam only by the straps.

3. The vehicle chassis according to any one of claims 1 or 2, wherein, The mouth of the gas storage cylinder is positioned close to the fuel cell; The vehicle chassis also includes a gas filling structure, which is adjacent to the nozzle end of the gas storage cylinder and installed on the adjacent longitudinal beam of the vehicle body, and the gas filling structure is connected to the gas storage cylinder.

4. The vehicle chassis according to any one of claims 1-3, wherein, The frame includes at least two axles, which are spaced apart along the length of the longitudinal beams of the vehicle body, and each axle is connected to two longitudinal beams of the vehicle body at both ends. The gas storage cylinder and the power battery are located between the two axles, and the fuel cell is installed above one of the axles.

5. The vehicle chassis according to claim 4, wherein, It also includes: at least one control unit and at least one inverter are mounted on the frame and located between two of the vehicle body longitudinal beams, and the control unit and the inverter are arranged sequentially along the extension direction of the vehicle body longitudinal beams; The axle located away from the fuel cell is an electric drive axle and is connected to a drive motor; the control unit includes a high-voltage control unit, which is located adjacent to the electric drive axle and is connected to the drive motor.

6. The vehicle chassis according to any one of claims 1-5, wherein, Also includes: An air conditioning system is mounted on the vehicle frame and disposed adjacent to the fuel cell. The air conditioning system includes an air conditioning condenser, which is mounted on the longitudinal beam of the vehicle body and located on the same side as the power battery.

7. The vehicle chassis according to any one of claims 1-6, wherein, Also includes: A clamp is fitted over and around the mouth of the gas cylinder, and one end of the gas supply pipe is mounted on the clamp.

8. The vehicle chassis according to any one of claims 1-7, wherein, The connecting structure further includes: a skin, the skin being connected to the strap, the skin comprising: A skin base plate, which is installed at the bottom of the strap; The skin side panel has its lower edge connected to the skin bottom plate. The skin side panel is located on the side of the gas cylinder away from the vehicle frame. The skin side panel and the skin bottom plate are integrally bent and formed parts.

9. The vehicle chassis according to claim 8, wherein, Except for the edges of the skin which are connected to the straps, the rest are suspended in the air.

10. A vehicle, wherein, Includes a vehicle chassis according to any one of claims 1-9.

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