Hydrogen supply system and vehicle

Abstract

The utility model discloses a kind of hydrogen supply system and vehicle, it is related to hydrogen source technology field in hydrogen fuel cell vehicle vehicle-mounted.The hydrogen supply system includes: first fixed frame, fixed cavity is formed in first fixed frame;Vaporizer, vaporizer is installed in fixed cavity, first hydrogen flow channel and cooling liquid flow channel that heat each other are equipped in vaporizer;Slow gas tank, slow gas tank is installed above first fixed frame, slow gas tank is connected with vaporizer to buffer hydrogen.The hydrogen supply system uses modularization design, slow gas tank is set above first fixed frame, compact structure, it is small to occupy whole vehicle space, and it is convenient to repair dismount.

Description

Technical Field

[0001] This utility model relates to the field of on-board hydrogen source technology in hydrogen fuel cell vehicles, specifically to a hydrogen supply system and a vehicle. Background Technology

[0002] In the field of hydrogen fuel cell vehicles, the hydrogen supply system, as a key subsystem for hydrogen storage and transportation, directly impacts the vehicle's space utilization and maintenance convenience through its structural design. In existing technologies, core components such as the carburetor and retarder are typically distributed and independently arranged, connected by long pipelines. This results in a loose system structure, occupies a large amount of vehicle space, and requires improvement in thermal management efficiency and hydrogen supply stability. Furthermore, the distributed layout necessitates disassembling multiple connections for component maintenance, leading to complex operations and inconvenient maintenance. Therefore, the layout of the hydrogen supply system needs improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a hydrogen supply system that adopts a modular design, with the slow-release tank located above the first fixed frame. This results in a compact structure, minimal space occupation in the vehicle, and ease of maintenance and disassembly.

[0004] This invention also aims to provide a vehicle having the aforementioned hydrogen supply system.

[0005] The hydrogen supply system according to an embodiment of the present invention includes: a first fixed frame, wherein a fixed cavity is formed within the first fixed frame; a vaporizer, wherein the vaporizer is installed within the fixed cavity, and the vaporizer is provided with a first hydrogen flow channel and a coolant flow channel for mutual heat exchange; and a buffer tank, wherein the buffer tank is installed above the first fixed frame, and the buffer tank is connected to the vaporizer to buffer hydrogen.

[0006] The hydrogen supply system according to this utility model embodiment adopts a modular design, integrating core components into independent functional modules. A first fixing frame forms a fixed cavity as the main body of the module, the vaporizer is installed within this cavity, and the buffer tank is positioned above the first fixing frame. Through this modular integrated layout, the buffer tank and vaporizer are arranged in an overlapping manner, making the overall structure of the hydrogen supply system more compact and significantly reducing its space occupation within the vehicle. Furthermore, this modular design facilitates the disassembly and maintenance of the entire hydrogen supply system. When system maintenance is required, only the module unit needs to be operated on, eliminating the need to disassemble other parts of the vehicle, greatly improving maintenance efficiency. In addition, the connecting pipe between the buffer tank and the vaporizer is naturally shortened due to the overlapping layout, effectively reducing pressure loss during hydrogen delivery, improving hydrogen supply efficiency, and helping to maintain a stable directional flow of hydrogen, thereby optimizing the overall system performance.

[0007] In some embodiments, the vaporizer includes a water bath vaporizer, the water bath vaporizer comprising: A first sleeve, within which a first flow channel is defined; The second sleeve is fitted over the outside of the first sleeve, and a second flow channel is defined between the second sleeve and the first sleeve; One of the first flow channel and the second flow channel is the first hydrogen flow channel, and the other is the coolant flow channel.

[0008] In some embodiments, the fluid flow directions in the first hydrogen flow channel and the coolant flow channel are opposite.

[0009] In some embodiments, the vaporizer includes a water bath vaporizer and an air bath vaporizer, wherein the first hydrogen flow channel is disposed in the water bath vaporizer and the air bath vaporizer is provided with a second hydrogen flow channel; In the direction of hydrogen flow, the first hydrogen flow channel is connected between the second hydrogen flow channel and the gas buffer tank; The water bath vaporizer and the air bath vaporizer are arranged side by side in the first fixed frame.

[0010] In some embodiments, the hydrogen supply system further includes a liquid collection tray located within the first mounting frame and below the vaporizer.

[0011] The vehicle according to an embodiment of the present utility model includes: A chassis, the chassis comprising two longitudinal beams and a crossbeam connecting the two longitudinal beams; In any of the above-described hydrogen supply systems, the first fixing frame is fixedly mounted on the longitudinal beam; The second fixing frame is fixedly installed on the longitudinal beam; A liquid hydrogen storage tank is mounted on the second fixed frame, and the inlet of the vaporizer is connected to the liquid hydrogen storage tank.

[0012] In some embodiments, the first mounting bracket is laterally mounted over the longitudinal beam of the frame; The second fixing bracket is installed on the side of the longitudinal beam.

[0013] In some embodiments, the vehicle further includes a battery mounted between the two longitudinal beams.

[0014] In some embodiments, the vehicle further includes: The carriage is installed above the two longitudinal beams, and the bottom of the carriage is provided with a clearance groove; The hydrogen supply system is located inside the clearance tank.

[0015] In some embodiments, the clearance groove is located at the front end of the bottom of the vehicle body and at the rear of the driver's cab.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a diagram showing the layout of the hydrogen supply system on the vehicle in some embodiments of this utility model; Figure 2 This is a simplified diagram showing the flow direction of hydrogen from the liquid hydrogen storage tank to the vaporizer in some embodiments of this utility model; Figure 3 This is a simplified structural diagram of the water bath vaporizer in some embodiments of this utility model; Figure 4 This is a diagram showing the arrangement of the liquid hydrogen storage tank on the vehicle frame in some embodiments of this utility model; Figure 5 This is a diagram showing the arrangement of the hydrogen supply system on the vehicle in some embodiments of this utility model; Figure 6 This is a simplified diagram of the coolant circulation in the carburetor and cooling system of a vehicle in some embodiments of this utility model.

[0018] Figure label: Vehicle 100, driver's cab 30, battery 40, frame 50, longitudinal beam 51, crossbeam 52, second mounting frame 60. C-type claw 61, strap 62, liquid hydrogen storage tank 70, third fixing frame 80, carriage 90, clearance trough 91. First cooling supply pipe 101, vehicle cooling heat exchanger 102, radiator fan 103, cooling chamber 104 Hydrogen supply system 10 First fixing frame 1, fixing cavity 11 Carburetor 2 Water bath vaporizer 21, first sleeve 211, first flow channel 2111 Second sleeve 212, first flow channel 2121, first hydrogen flow channel 21a Air bath vaporizer 22, second hydrogen flow channel 22a, coolant flow channel 22b 3. Gas venting can 4. Liquid collection tray. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The hydrogen supply system 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0022] According to the hydrogen supply system 10 of this utility model embodiment, referring to... Figure 1 It includes: a first fixed frame 1, a vaporizer 2, and a slow-release tank 3.

[0023] like Figures 1-2 As shown, a fixed cavity 11 is formed inside the first fixed frame 1, and a vaporizer 2 is installed inside the fixed cavity 11. The vaporizer 2 is provided with a first hydrogen flow channel 21a and a coolant flow channel 22b that exchange heat with each other. A buffer tank 3 is installed above the first fixed frame 1 and is connected to the vaporizer 2 to buffer hydrogen.

[0024] The fixed cavity 11 formed by the first fixed frame 1 is used to install the vaporizer 2. Placing the vaporizer 2 in the fixed cavity 11 provides a stable installation base for the vaporizer 2 and also ensures that the vaporizer 2 remains stable and does not shift during the operation of the vehicle 100.

[0025] In some specific embodiments, such as Figure 1 As shown, the first mounting frame 1 can be a rectangular frame. The vaporizer 2 is located inside the first mounting frame 1, which provides a protective shell for the vaporizer 2 and also provides basic support points for the two supports of the slow-release tank 3. The internal cavity of the first mounting frame 1 also serves as a natural channel for the flow of the heat medium, and the rigidity of the first mounting frame 1 itself can suppress the transmission of vibration. The integrated arrangement of the vaporizer 2 and the slow-release tank 3 not only saves the space required by the traditional layout, but also reduces hydrogen leakage by shortening the pipeline connection between the two.

[0026] like Figure 2 As shown, the vaporizer 2 has a first hydrogen flow channel 21a and a coolant flow channel 22b that exchange heat with each other. In some specific embodiments, the vaporizer 2 is connected to a liquid hydrogen storage tank 70. Thus, liquid or gaseous hydrogen enters the first hydrogen flow channel 21a and absorbs heat from the coolant in the coolant flow channel 22b, while the coolant in the coolant flow channel 22b absorbs the coldness of the hydrogen. The cooled coolant can then supply the cooling needs of the vehicle 100. For example, the coolant can be used to cool the engine of the vehicle 100, ensuring the engine's safe and reliable operation. It can be used to cool the battery of the vehicle 100, ensuring the battery does not overheat and reducing the risk of battery spontaneous combustion. It can be used to cool the passenger space of the vehicle 100, improving passenger comfort. It can be used to cool the cargo space of the vehicle 100, improving the low-temperature preservation quality of goods in the cargo space. This reduces the heat dissipation load of the vehicle 100, saves electrical energy consumption, and lowers the overall vehicle energy consumption.

[0027] It is understandable that the coolant used in the system can be water or other liquids with a certain specific heat capacity. For ease of explanation, this article will specifically use water as the coolant.

[0028] The buffer tank 3 is installed above the first mounting bracket 1 and is connected to the vaporizer 2 to buffer hydrogen. When hydrogen at a suitable temperature flows through the vaporizer 2 to the buffer tank 3, the buffer tank 3 stores vaporized hydrogen that has not been used by the fuel cell engine. This maintains a stable supply to the fuel cell engine and ensures the engine's operational reliability.

[0029] Specifically, the gas buffer tank 3 is stacked on top of the vaporizer 2, thus avoiding the first fixing frame 1 and the gas buffer tank 3 occupying too much space. Moreover, the gas buffer tank 3 and the vaporizer 2 form a highly integrated structure through a close vertical arrangement, which not only significantly shortens the connecting pipeline between the two, reducing the risk of pipeline breakage due to excessive length, but also optimizes the hydrogen delivery path and enhances the directional flow stability of hydrogen in the hydrogen supply system 10, thereby further improving the overall reliability and performance of the system.

[0030] In some specific embodiments, such as Figure 1 As shown, two supports are mounted on the first mounting frame 1 to hold up the gas-relieving tank 3 and limit its rolling. Optionally, the supports are welded to the first mounting frame 1 to improve connection reliability. The installation position of the gas-relieving tank 3 can be precisely calculated so that its axis is perfectly aligned with the center line of the lower vaporizer 2. This vertical stacking arrangement ensures that the projected area of ​​the entire system on the horizontal plane completely overlaps with that of the individual first mounting frame 1. From the side, this only increases the overall height without creating additional space requirements in the horizontal direction, maximizing space utilization.

[0031] In some specific embodiments, such as Figure 1 As shown, the first fixing frame 1 adopts a frame structure. Each side bar of the frame can be made of profiles, which not only makes it easy to obtain materials but also has high structural strength and high resistance to deformation.

[0032] In summary, whether it is the installation process of the hydrogen supply system 10 or subsequent maintenance work, the vaporizer 2, the slow gas tank 3 and the first fixed frame 1 can be disassembled and assembled as a whole module, which is convenient and efficient and effectively saves assembly and maintenance time.

[0033] In some embodiments, refer to Figures 1-3 The vaporizer 2 includes a water bath vaporizer 21, which includes: a first sleeve 211, which defines a first flow channel 2111; a second sleeve 212, which is fitted outside the first sleeve 211, and defines a second flow channel 2121 between the second sleeve 212 and the first sleeve 211.

[0034] The water bath vaporizer 21 adopts a sleeve structure. The diameters of the first flow channel 2111 and the second flow channel 2121 are both large, which can ensure the smooth flow of hydrogen and coolant and improve circulation efficiency.

[0035] Furthermore, one of the first flow channel 2111 and the second flow channel 2121 is a first hydrogen flow channel 21a, and the other is a coolant flow channel 22b.

[0036] In this application, optionally, such as Figure 2 As shown, the inlet of the first hydrogen flow channel 21a and the inlet of the coolant flow channel 22b are located at opposite ends of the extension direction of the coolant flow channel 22b. The low-temperature hydrogen and the high-temperature coolant flow in opposite directions, forming a counter-current heat exchange mode. This arrangement maintains a large temperature gradient throughout the process, allowing the conversion of low-temperature hydrogen to high-temperature hydrogen to be more complete.

[0037] In some embodiments, refer to Figure 2 The fluid flow directions in the first hydrogen flow channel 21a and the coolant flow channel 22b are opposite.

[0038] like Figure 2, Figure 3 As shown, the inlet of the first flow channel 2111 and the inlet of the second flow channel 2121 of the first sleeve 211 are located at both ends of the water bath vaporizer 21. When low-temperature hydrogen flows in through the left end of the first sleeve 211, it enters the first flow channel 2111 defined within the first sleeve 211, forming a forced convection boundary layer on the inner wall of the first sleeve 211. Simultaneously, high-temperature coolant is pumped in from the right end of the second sleeve 212, entering the second flow channel 2121 defined within the second sleeve 212. As the coolant flows within the second flow channel 2121, its heat is conducted to the outer wall of the first sleeve 211, resulting in a radially decreasing temperature gradient within the first sleeve 211. The low-temperature hydrogen continuously absorbs heat from the second flow channel 2121 within the first flow channel 2111, gradually increasing its temperature until it reaches a suitable temperature for gaseous hydrogen.

[0039] Positioning the inlet of the first flow channel 2111 and the inlet of the second flow channel 2121 at opposite ends of the water bath vaporizer 21 is an engineering optimization design based on maximizing thermodynamic efficiency and system safety. When cryogenic hydrogen flows in through the inlet of the first flow channel 2111, cooling water flows in through the inlet of the second flow channel 2121. The cryogenic hydrogen and cooling water flow in opposite directions, forming a counter-current heat exchange mode. This arrangement maintains a large temperature gradient throughout the process, allowing for a more complete conversion of cryogenic hydrogen into high-temperature hydrogen. Furthermore, the design of materials entering from both ends avoids concentrated heating on one side, preventing uneven material expansion in the water bath vaporizer 21 and extending its service life.

[0040] Optionally, to enhance heat transfer, the outer surface of the first sleeve 2111 can be machined with a micro-rib structure to increase the heat transfer area, and swirl vanes are installed inside the second sleeve 212 to promote the formation of swirling flow of the coolant. The counter-current arrangement of the two fluids ensures that the inlet and outlet always maintain the maximum temperature difference.

[0041] In some embodiments, refer to Figure 2 The vaporizer 2 includes a water bath vaporizer 21 and an air bath vaporizer 22. A first hydrogen flow channel 21a is provided inside the water bath vaporizer 21, and a second hydrogen flow channel 22a is provided inside the air bath vaporizer 22. In the direction of hydrogen flow, the first hydrogen flow channel 21a is connected between the second hydrogen flow channel 22a and the slow-release tank 3.

[0042] like Figure 1As shown, the vaporizer 2 is one of the key components of the hydrogen supply system 10. The function of the vaporizer 2 is to quickly and safely convert the cryogenic liquid hydrogen in the liquid storage tank 70 into gaseous hydrogen at a suitable temperature, supplying combustion for the fuel cell engine. It should be noted that the process of hydrogen converting from liquid to gas requires the absorption of a large amount of heat. First, the cryogenic liquid hydrogen in the liquid storage tank 70 absorbs heat from the air, converting it into cryogenic hydrogen gas. Specifically, the cryogenic liquid hydrogen fully absorbs heat from the air at the second hydrogen flow channel 22a in the air bath vaporizer 22, achieving the primary phase change and temperature increase of the liquid hydrogen. Then, when the cryogenic hydrogen gas flows out from the second hydrogen flow channel 22a in the air bath vaporizer 22, it flows directly into the water bath vaporizer 21 to complete the second temperature increase.

[0043] In this way, the temperature of hydrogen entering the water bath vaporizer 21 will not be too low, thus avoiding freezing of the coolant in the coolant channel 22b and causing poor flow.

[0044] Optionally, the air bath vaporizer 22 is typically a finned tube supported by aluminum alloy or special materials. The finned structure on the outside of the tube greatly increases the contact area with the air, so that even if the ambient temperature is low, heat exchange can be enhanced through natural convection or forced ventilation (such as by adding a fan).

[0045] Furthermore, such as Figure 1 As shown, the water bath vaporizer 21 and the air bath vaporizer 22 are arranged side by side in the first fixed frame 1.

[0046] The water bath vaporizer 21 and the air bath vaporizer 22 are compactly installed side-by-side within the first mounting bracket 1. This parallel design makes full use of the space within the bracket 1, avoiding the extra length required by traditional lateral arrangements, allowing the vaporizers 2 to coexist efficiently within the available space. This arrangement reduces the overall volume occupied by the vaporizers 2, improves the utilization efficiency of the vehicle space, ensures a more direct and compact pipeline connection between the water bath vaporizer 21 and the air bath vaporizer 22, further reduces the hydrogen delivery path length, and minimizes potential leakage risks.

[0047] In some embodiments, refer to Figure 1 The hydrogen supply system 10 also includes a liquid collection tray 4, which is located inside the first fixed frame 1 and below the vaporizer 2.

[0048] The collection tray 4 can collect condensate and other substances from the surface of the carburetor 2. In some cases, even if there is a minor leak in the carburetor 2 or the pipeline, the collection tray 4 can be used to collect liquid hydrogen. This prevents liquid hydrogen from directly contacting the frame 60, other internal components of the frame 60, or the ground, thus preventing safety risks and ensuring the safety of the vehicle 100 structure and personnel.

[0049] Optionally, the collection tray 4 has an arc-shaped groove structure with the center concave downwards. Further optionally, the collection tray 4 is a stainless steel tray or an aluminum alloy tray.

[0050] According to an embodiment of the present utility model, the vehicle 100, with reference to... Figure 1 It includes: a frame 50, a hydrogen supply system 10, a second mounting frame 60, and a liquid hydrogen storage tank 70.

[0051] The frame 50 includes two longitudinal beams 51 and a crossbeam 52 connecting the two longitudinal beams 51. The first fixing frame 1 is fixedly installed on the longitudinal beams 51, and the second fixing frame 60 is fixedly installed on the longitudinal beams 51.

[0052] The liquid hydrogen storage tank 70 is mounted on the second fixed frame 60, and the inlet of the vaporizer 2 is connected to the liquid hydrogen storage tank 70.

[0053] The frame 50 consists of two longitudinal beams 51 and a crossbeam 52 between the longitudinal beams 51. The frame 50 serves not only as the mounting base for the hydrogen supply system 10 but also as the load-bearing mounting structure for other components on the vehicle 100, such as wheels, suspension system, and power system. The first mounting bracket 1 is mounted on the longitudinal beams 51, providing a mounting base for the carburetor 2 and the slow-release tank 3.

[0054] Furthermore, the second fixing frame 60 provides an installation base for the liquid hydrogen storage tank 70. The second fixing frame 60 is installed on the longitudinal beam 51. Therefore, the liquid hydrogen storage tank 70 is also connected and fixed to the longitudinal beam 51 through the second fixing frame 60.

[0055] The liquid hydrogen storage tank 70 stores a rated capacity of liquid hydrogen for use in the fuel cell engine. The internal temperature of the liquid hydrogen storage tank 70 is maintained at ultra-low temperatures for efficient storage of liquid hydrogen. Optionally, the density of the liquid hydrogen stored in the liquid hydrogen storage tank 70 is 800 times that of gaseous hydrogen. The liquid hydrogen storage tank 70 uses a vacuum multi-layer insulation structure (30-60 layers of aluminum foil composite) to control the daily evaporation rate between 3% and 5%. The liquid hydrogen storage tank 70 combines lightweight design with ultra-high strength performance and integrates an intelligent pressure management system for precise pressure regulation. In the event of a collision, passive protection can be achieved through a pre-installed directional pressure relief valve and a buffer energy-absorbing layer.

[0056] In this application, the liquid hydrogen storage tank 70 supplies liquid hydrogen to the vaporizer 2, where the liquid hydrogen vaporizes into gaseous hydrogen. Here, both liquid and gaseous hydrogen are collectively referred to as hydrogen, and the specific location within the vaporizer 2 where vaporization occurs is not limited. In some designs, there are at least two vaporizers 2. Liquid hydrogen begins vaporization upon entering the first vaporizer 2, while low-temperature gaseous hydrogen or a low-temperature gas-liquid mixture further absorbs heat and increases its temperature upon entering the other vaporizer 2.

[0057] In some specific embodiments, such as Figure 1 , Figure 4 As shown, the second fixing frame 60 can be composed of C-shaped frames 61 and straps 62. There are at least two C-shaped frames 61 arranged at intervals along the length of the liquid hydrogen storage tank 70, and the liquid hydrogen storage tank 70 is placed on the C-shaped frames 61. The straps 62 are provided one-to-one with the C-shaped frames 61, and the straps 62 are connected to both ends of the C-shaped frames 61 to secure the liquid hydrogen storage tank 70.

[0058] With the adoption of C-shaped frame 61 and strap 62, the shape of the second fixing frame 60 is consistent with the outer circumferential cross-sectional shape of the liquid hydrogen storage tank 70. The second fixing frame 60 does not need to occupy too much space, so as to avoid affecting the setting of the upper compartment 90.

[0059] Furthermore, the C-shaped frame 61 is connected to the outer sleeve of the tie strap 62 to secure the liquid hydrogen storage tank 70. This allows the tie strap 62 to be adjusted in length according to the circumference of the liquid hydrogen storage tank 70. This enables the tie strap 62 to flexibly adapt to liquid hydrogen storage tanks 70 of different sizes and shapes, ensuring they are securely fixed. In practical use, when installing or replacing the liquid hydrogen storage tank 70, users can easily loosen or tighten the tie strap 62, providing sufficient operating space for installation or replacement, making the entire process more convenient and efficient.

[0060] Once the liquid hydrogen storage tank 70 is installed, the user can adjust its size by tightening the straps 62. During this process, the straps 62 will fit snugly against the surface of the liquid hydrogen storage tank 70, providing a secure restraint. This not only prevents the liquid hydrogen storage tank 70 from shaking or shifting during operation but also avoids collisions between the liquid hydrogen storage tank 70 and the vehicle body, ensuring the integrity and safety of the liquid hydrogen storage tank 70.

[0061] Specifically, the bottom of the C-shaped frame 61 is connected by square steel, and the other side of the square steel is connected to the battery bracket inside the frame 50, providing more connection points for the liquid hydrogen storage tank 70 and ensuring that the battery bracket does not shift when it is subjected to impact.

[0062] The strap 62 serves as a restraint component for the liquid hydrogen storage tank 70. Optionally, the strap 62 is made of a composite of a high-strength para-aramid fiber braided layer (tensile strength ≥3000MPa) and a carbon fiber reinforced epoxy resin matrix. Under harsh conditions such as continuous vibration, sudden temperature changes, or chemical corrosion, the strap 62 can always limit the displacement of the liquid hydrogen storage tank 70 within the design allowable range.

[0063] In some embodiments, refer to Figure 1 , Figure 4 The first fixing frame 1 is mounted laterally across the longitudinal beam 51 of the frame 50, and the second fixing frame 60 is mounted on the side of the longitudinal beam 51.

[0064] Vehicle 100 requires hydrogen supply, and this hydrogen demand can be met within a limited space, thus satisfying the vehicle's long driving range requirement. By laterally mounting the first mounting bracket 1 across the longitudinal beam 51 of the frame 50, mounting the carburetor 2 on the first mounting bracket 1, mounting the second mounting bracket 60 on the side of the longitudinal beam 51 of the frame 50, and mounting the liquid hydrogen storage tank 70 on the second mounting bracket 60, the unused space on the side of the longitudinal beam 51 of the frame 50 can be fully utilized. This results in a small footprint for the first mounting bracket 1, carburetor 2, etc., located above the frame 50, without affecting the load capacity above the frame 50. In some models, the system can even be located at the front of the frame 50, with the first mounting bracket 1, carburetor 2, etc., located in the empty space behind the cab, making the overall vehicle structure more compact and improving space utilization.

[0065] Understandably, since the hydrogen storage device in this application uses a liquid hydrogen storage tank 70, the volume of hydrogen is significantly reduced after being stored in a liquid state. Therefore, the liquid hydrogen storage tank 70 does not need to be excessively large to supply sufficient hydrogen to meet the load and driving range requirements of the vehicle 100, such as the needs of heavy-duty trucks. For vehicles requiring liquid hydrogen, the frame 50 is relatively long and positioned high, leaving ample space on the side of the longitudinal beam 51. Therefore, mounting the liquid hydrogen storage tank 70 on the side of the frame 50 via the second fixing bracket 60 does not affect the driving of the vehicle 100.

[0066] When hydrogen is stored in a liquid state, the system needs to be equipped with a vaporizer 2. Before use, the liquid hydrogen absorbs heat and vaporizes in the vaporizer 2 to raise its temperature, ensuring a normal supply to the battery 40. The vaporizer 2 is relatively small in size, so it does not take up too much space when placed above the frame 50.

[0067] The hydrogen supply system 10 according to this utility model embodiment is used on vehicles 100 that require liquid hydrogen storage, such as long-haul heavy commercial vehicles and heavy trucks. It meets the hydrogen storage requirements with limited space, thereby meeting the long driving range requirements of the vehicle. By laterally mounting the first fixing frame 1 across the frame 50, and mounting the carburetor 2 on the first fixing frame 1, and by placing the second fixing frame 60 on the side of the longitudinal beam 51 of the frame 50, the liquid hydrogen storage tank 70 is mounted on the second fixing frame 60. This arrangement of the liquid hydrogen storage tank 70 on the side of the longitudinal beam 51 makes full use of the unused space on the side of the frame 50 of the vehicle 100. Thus, the first fixing frame 1, carburetor 2, etc., placed above the frame 50 occupy little space and do not affect the load capacity above the frame 50. In some models, the system can even be placed at the front of the frame 50, while the first mounting bracket 1, carburetor 2, etc. can be placed in the empty space behind the driver's compartment 30, making the overall vehicle structure more compact and the space utilization rate higher.

[0068] This application utilizes the first fixing frame 1 and the second fixing frame 60, and restricts their installation positions on the vehicle frame 50, to achieve modularity of the hydrogen supply system 10. The modular system reduces the impact on other modules on the vehicle 100 during development, facilitates a shorter development cycle, and offers high module reusability and relatively low development complexity, thus helping to control overall costs.

[0069] In some embodiments, the vehicle 100 further includes a battery 40, which is mounted between two longitudinal beams 51. This arrangement of the battery 40 within the space between the two longitudinal beams 51 improves the structural compactness of the hydrogen supply system 10 combined with the battery system, reducing the overall space required.

[0070] Specifically, battery 40 can be located directly below hydrogen supply system 105 to further improve overall compactness. Alternatively, battery 40 can be positioned offset from hydrogen supply system 105.

[0071] Of course, the proposed solution is not limited to this. For example, it can be suspended below the frame 50 or installed above the frame 50. When installed above the frame 50, it can straddle the two longitudinal beams 51 or be installed on the crossbeam 52. In other solutions, there are multiple batteries 40, which are distributed to make full use of the space in the frame 50.

[0072] In some specific embodiments, the vehicle 100 further includes a third mounting bracket 80, which is mounted on the frame 50, and the battery 40 is mounted on the third mounting bracket 80.

[0073] like Figure 5 As shown, the hydrogen supply system 10 is installed on the frame 50 and placed between the driver's cab 30 and the passenger compartment 90, thereby improving the space utilization of the vehicle 100.

[0074] In some specific embodiments, such as Figure 6 As shown, the hydrogen supply system 10 also includes: a first cooling supply pipe 101 and a heat exchanger 102 for vehicle refrigeration.

[0075] One end of the first cooling supply pipe 101 is connected to the coolant flow channel 11 of the carburetor 2, and the other end is connected to the cooling chamber 104 of the engine of the battery 40. One end of the first cooling supply pipe 101 provides a flow channel for high-temperature coolant to enter the carburetor 2, and the other end is connected to the vehicle refrigeration heat exchanger 102, which is connected in series with the first cooling supply pipe 101. In this way, the vehicle refrigeration heat exchanger 102 can absorb cold energy and cool the surrounding air, so that the cooled air can be supplied to the passenger space or the cargo space. When the cooled air from the vehicle refrigeration heat exchanger 102 flows to the passenger space, it can improve the comfort of the passengers. When the cooled air from the vehicle refrigeration heat exchanger 102 flows to the cargo space, it can improve the low-temperature preservation quality of the goods.

[0076] Optionally, a cooling fan 103 is provided at the vehicle cooling heat exchanger 102 to increase airflow and thereby improve the heat exchange efficiency between the air and the vehicle cooling heat exchanger 102.

[0077] In some embodiments, refer to Figure 5 Vehicle 100 also includes: carriage 90.

[0078] Specifically, the carriage 90 is installed above two longitudinal beams 51, and the bottom of the carriage 90 is provided with a clearance groove 91, in which the hydrogen supply system 10 is located.

[0079] A clearance groove 91 is provided at the bottom of the vehicle body 90 corresponding to the position of the hydrogen supply system 10. The hydrogen supply system 10 can be fixed in the clearance groove 91 by the bracket on the first fixing frame 1. The frame structure of the vehicle body 90 can protect the hydrogen supply system 10 from external collisions. Furthermore, the sunken layout of the hydrogen supply system 10 lowers the center of gravity of high-density components, significantly reducing the center of gravity height of the vehicle 100, thereby enhancing the dynamic stability of the vehicle 100.

[0080] Specifically, the clearance groove 91 is located at the front end of the bottom of the carriage 90 and at the rear of the driver's cab 30.

[0081] The hydrogen supply system 10 is centrally located in the low-lying area at the front of the vehicle 100 (behind the driver's compartment 30), effectively utilizing the space between the driver's compartment 30 and the passenger compartment 90 to accommodate the first mounting bracket 1 and the carburetor 2 above it, thus improving the space utilization of the vehicle 100. Furthermore, the hydrogen supply system 10 does not occupy the cargo / passenger space in the middle or rear of the passenger compartment 90, and its proximity to the driver's compartment 30 shortens the connection distance between the hydrogen supply system 10 and the battery 40, reducing the risk of pressure loss and leakage during high-pressure hydrogen transmission.

[0082] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0083] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A hydrogen supply system, characterized in that, include: A first fixing frame, wherein a fixing cavity is formed within the first fixing frame; A vaporizer is installed inside the fixed cavity, and the vaporizer is provided with a first hydrogen flow channel and a coolant flow channel that exchange heat with each other; A buffer tank is installed above the first mounting bracket and is connected to the vaporizer to buffer hydrogen.

2. The hydrogen supply system according to claim 1, characterized in that, The vaporizer includes a water bath vaporizer, which comprises: A first sleeve, within which a first flow channel is defined; The second sleeve is fitted over the outside of the first sleeve, and a second flow channel is defined between the second sleeve and the first sleeve; One of the first flow channel and the second flow channel is the first hydrogen flow channel, and the other is the coolant flow channel.

3. The hydrogen supply system according to claim 1, characterized in that, The fluid flow directions in the first hydrogen flow channel and the coolant flow channel are opposite.

4. The hydrogen supply system according to claim 1, characterized in that, The vaporizer includes a water bath vaporizer and an air bath vaporizer. The first hydrogen flow channel is located inside the water bath vaporizer, and the second hydrogen flow channel is located inside the air bath vaporizer. In the direction of hydrogen flow, the first hydrogen flow channel is connected between the second hydrogen flow channel and the gas buffer tank; The water bath vaporizer and the air bath vaporizer are arranged side by side in the first fixed frame.

5. The hydrogen supply system according to claim 1, characterized in that, The hydrogen supply system further includes a liquid collection tray, which is located within the first fixed frame and below the vaporizer.

6. A vehicle, characterized in that, include: A chassis, the chassis comprising two longitudinal beams and a crossbeam connecting the two longitudinal beams; The hydrogen supply system according to any one of claims 1-5, wherein the first fixing frame is fixedly installed on the longitudinal beam; The second fixing frame is fixedly installed on the longitudinal beam; A liquid hydrogen storage tank is mounted on the second fixed frame, and the inlet of the vaporizer is connected to the liquid hydrogen storage tank.

7. The vehicle according to claim 6, characterized in that, The first fixing frame is laterally mounted over the longitudinal beam of the frame; The second fixing bracket is installed on the side of the longitudinal beam.

8. The vehicle according to claim 7, characterized in that, Also includes: A battery, which is installed between the two longitudinal beams.

9. The vehicle according to any one of claims 6-8, characterized in that, Also includes: The carriage is installed above the two longitudinal beams, and the bottom of the carriage is provided with a clearance groove; The hydrogen supply system is located inside the clearance tank.

10. The vehicle according to claim 9, characterized in that, The clearance groove is located at the front end of the bottom of the carriage and at the rear of the driver's cab.

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