Vehicle-mounted hydrogen system and vehicle

Abstract

The utility model discloses a vehicle-mounted hydrogen system and a vehicle, and relates to the technical field of hydrogen energy vehicles. The pipe valve structure of the vehicle-mounted hydrogen system comprises a bottle opening integrated valve, the bottle opening integrated valve is used for being installed at the bottle opening end of a gas storage bottle, the bottle opening integrated valve is provided with a gas inlet, a gas outlet and a discharging opening which are used for being communicated with the interior of the gas storage bottle, and a pressure reducing valve located at the gas outlet is arranged in the bottle opening integrated valve; the hydrogenation module is used for being communicated with a high-pressure hydrogen source, and the hydrogenation module is connected with the gas inlet through a gas inlet connecting pipe; the gas supply pipe is connected with the gas outlet and is used for being connected with a fuel cell; one end of the exhaust pipe is used for being communicated with the atmosphere, and the other end of the exhaust pipe is connected with the discharge port. The pipe valve structure and the pipeline connecting structure are greatly simplified, the weight of the pipe valve structure is reduced, the complexity of the installation technology is reduced, the occupied space is reduced, and the risk of air leakage points of a system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy vehicles, in particular to a vehicle-mounted hydrogen system and a vehicle. Background Art

[0002] Fuel cell hydrogen vehicles use hydrogen or hydrogen-containing substances to react with oxygen in the air in a fuel cell to generate electricity, which is supplied to the electric motor to drive the vehicle, converting the chemical energy generated by the hydrogen reaction into mechanical energy. At present, with the continuous development of new energy vehicles, hydrogen energy vehicles are gradually becoming an important choice.

[0003] The gas cylinders in the hydrogen system use the system to connect valves and pipelines to complete the process of hydrogenation from the hydrogen filling port and hydrogen delivery to the fuel cell stack. In some existing technical solutions, the hydrogen cylinder is arranged horizontally above the frame or at the bottom of the frame, and in other existing technical solutions, there are two hydrogen cylinders and they are arranged on both sides of the frame.

[0004] These solutions involve a large number of gas cylinders, a large number of pipe valves used in the system, a complex pipeline structure, and difficulty in assembling the system pipelines. More complex pipelines are prone to stress concentration at the pipeline interface, leading to gas leakage problems, and pose a high safety risk. At the same time, the design of such pipeline structures occupies a large space, which is not conducive to the layout of the hydrogen storage system in the vehicle. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a pipe valve structure of a vehicle-mounted hydrogen system, which reduces the risk of gas leakage by simplifying the pipeline structure and reduces its space occupancy in the system.

[0006] The utility model also aims to provide a vehicle-mounted hydrogen system having the above-mentioned pipe-valve structure.

[0007] The utility model also aims to provide a vehicle with the above-mentioned on-board hydrogen system.

[0008] The pipe and valve structure of the on-board hydrogen system according to the embodiment of the utility model includes: a bottle mouth integrated valve, which is used to be installed at the bottle mouth end of the gas storage bottle, and is provided with an air inlet, an air outlet and a discharge port for connecting to the inside of the gas storage bottle; a hydrogenation module, which is used to connect to a high-pressure hydrogen source, and the hydrogenation module is connected to the air inlet through an air intake connecting pipe; an air supply pipe, which is connected to the air outlet and is used to connect to a fuel cell; an exhaust pipe, one end of which is used to connect to the atmosphere, and the other end of the exhaust pipe is connected to the discharge port.

[0009] The pipe and valve structure of the on-board hydrogen system of the present application is that the hydrogenation module is directly connected to the bottle mouth integrated valve through the air intake pipe during air intake, and the gas is directly discharged to the air supply pipe after being processed by the bottle mouth integrated valve during air supply. When the air pressure in the gas storage bottle and the internal channel of the valve body is too high, the high-pressure gas is discharged to the exhaust pipe and then discharged to the atmosphere to maintain a stable air pressure in the bottle. When maintenance is required, the gas in the gas storage bottle is discharged to the exhaust pipe to empty the hydrogen in the gas storage bottle. In this way, air intake, air supply, and pressure relief operations can be achieved. This pipe and valve structure greatly simplifies the pipeline connection structure, which is conducive to reducing the weight of the pipe and valve structure, reducing the complexity of the installation process, and is also conducive to reducing the occupied space and reducing the risk of system leakage points.

[0010] In some embodiments, the tube valve structure further includes: a pressure reducing valve, which is built into the air outlet of the bottle mouth integrated valve.

[0011] Specifically, the bottle mouth integrated valve is provided with a first discharge channel respectively connected to the pressure reducing valve and the discharge port; the bottle mouth integrated valve is provided with a second discharge channel respectively connected to the inside of the gas storage bottle and the discharge port; the bottle mouth integrated valve is provided with a third discharge channel respectively connected to the gas outlet and the discharge port.

[0012] In some embodiments, the pipe valve structure further includes: a pressure reducing valve, which is located outside the bottle mouth integrated valve, the pressure reducing valve is connected to the air outlet through the pressure reducing connecting pipe, and the air supply pipe is connected to the pressure reducing valve.

[0013] Specifically, the tube valve structure also includes: a bottle tail valve, which is used to be installed at the tail end of the gas cylinder, and the bottle tail valve is provided with a tail port for connecting to the inside of the gas cylinder; a bottle body connecting pipe, one end of the bottle body connecting pipe is connected to the tail port, and the other end of the bottle body connecting pipe is connected to the exhaust pipe; the tube valve structure includes: a discharge connecting pipe, one discharge connecting pipe is connected to the bottle body connecting pipe and the gas supply pipe, and the other discharge connecting pipe is connected to the pressure reducing valve and the exhaust pipe.

[0014] In some embodiments, the air inlet, air outlet and discharge port are arranged on the outer peripheral surface of the bottle mouth integrated valve and are distributed at intervals along the circumferential direction. The section of the exhaust pipe connected to the bottle mouth integrated valve is a hose section.

[0015] In some embodiments, the on-board hydrogen system also includes: a bottle mouth fixing device, the bottle mouth fixing device includes: a clamp, the clamp is annular and surrounds an annular mouth, the clamp is outer-circuited and clamped on the bottle mouth end of the gas storage bottle; at least one mounting part, the mounting part is arranged on the clamp, and the mounting part is connected to at least one of the intake pipe, the air supply pipe, and the exhaust pipe.

[0016] Specifically, the mounting portion is detachably arranged on the clamp; and / or the position of the mounting portion on the clamp is adjustable.

[0017] According to an embodiment of the utility model, the on-board hydrogen system includes: a gas storage bottle; the pipe valve structure of the on-board hydrogen system described in the above embodiment, and the bottle mouth integrated valve is installed at the bottle mouth end of the gas storage bottle.

[0018] According to the on-board hydrogen system of the embodiment of the utility model, the overall pipeline connection structure of the on-board hydrogen system is simple, the weight can be reduced, and the complexity of the installation process is reduced, which is beneficial to reducing the occupied space and reducing the risk of system leakage points.

[0019] The vehicle according to the embodiment of the utility model comprises: a vehicle body longitudinal beam; and the vehicle-mounted hydrogen system described in the above embodiment, wherein the vehicle-mounted hydrogen system is installed on one side of the vehicle body longitudinal beam, thereby improving the overall system safety of the vehicle.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is an assembly structure diagram of a vehicle frame and a vehicle-mounted hydrogen system thereon in some embodiments of the utility model;

[0023] Figure 2 It is a structural diagram of the vehicle-mounted hydrogen system of some embodiments of the utility model in the forward direction;

[0024] Figure 3 yes Figure 2 A partial enlarged view of the onboard hydrogen system;

[0025] Figure 4 yes Figure 2 The structural diagram of the vehicle-mounted hydrogen system in the rearward direction is shown;

[0026] Figure 5 It is a structural diagram of the vehicle-mounted hydrogen system in other embodiments of the utility model in the front view direction;

[0027] Figure 6 yes Figure 5 A partial enlarged view of the onboard hydrogen system of a vehicle after hiding part of the hydrogen refueling module;

[0028] Figure 7 It is a schematic diagram of the piping structure principle of the vehicle-mounted hydrogen system of some embodiments of the utility model.

[0029] Reference numerals:

[0030] Vehicles 10000,

[0031] On-board hydrogen system 1000,

[0032] Pipe valve structure 100,

[0033] Bottle mouth integrated valve 1, air inlet 101, air outlet 102, discharge port 103, second manual valve 11, first discharge channel 12, second discharge channel 13, third discharge channel 14,

[0034] Hydrogenation module 2,

[0035] Pressure reducing valve 31, bottle tail valve 32, tail port 321, first manual valve 33, discharge control valve 35, air intake check valve 36, air intake filter 37,

[0036] Air supply pipe 51, hose section 511, exhaust pipe 53, bottle body connecting pipe 55, air intake connecting pipe 57, pressure relief connecting pipe 58,

[0037] Discharge connecting pipe 61, first discharge sub-pipe 611, second discharge sub-pipe 612, third discharge sub-pipe 613,

[0038] Bottle end fixing device 7, hoop 71, clamp 711, clamp connector 712, mounting portion 72, extension plate 73, support seat 75,

[0039] Gas storage bottle 200, bottle mouth end 210, bottle tail end 220,

[0040] Gas cylinder mounting structure 400, strap 410, skin 420,

[0041] Vehicle frame 500 , vehicle body longitudinal beam 510 , and vehicle body cross beam 520 . DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] In the description of the present utility model, it is necessary to understand that the terms "center", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The pipe valve structure 100 of the vehicle-mounted hydrogen system according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0046] The pipe valve structure 100 of the vehicle-mounted hydrogen system of the utility model embodiment is as follows Figure 1 As shown, it is installed on the vehicle 10000 as a supporting pipe and valve structure for the gas cylinder 200. It should be noted that in the prior art solutions, the number of gas cylinders installed on the vehicle is usually large, and the supporting pipe and valve structure is also relatively complex. For example, there are at least two air intake pipes connected to the hydrogenation module, one connected to the gas cylinder and the other connected to the pressure reducing valve. The number of air intake pipes is large and the pipeline is long. Various filters and control valves are arranged on the air intake pipes, which requires the pipeline to be cut off and connected to the pipe body. The above factors will lead to problems such as complex pipeline connection structure, heavy weight, complex installation process, large space occupied, and high risk of system leakage points.

[0047] To solve the above problems, the present application proposes a pipe valve structure 100 for a vehicle-mounted hydrogen system, such as Figure 2 and Figure 3 , Figure 5 and Figure 6 As shown, it includes: a bottle mouth integrated valve 1, a hydrogenation module 2, a gas supply pipe 51 and an exhaust pipe 53.

[0048] The bottle mouth integrated valve 1 is used to be installed at the bottle mouth end 210 of the gas storage bottle 200. The bottle mouth integrated valve 1 is provided with an air inlet 101, an air outlet 102 and a discharge port 103 for connecting to the inside of the gas storage bottle 200. The hydrogenation module 2 is used to connect to the high-pressure hydrogen source. The hydrogenation module 2 is connected to the air inlet 101 through the air inlet connecting pipe 57.

[0049] That is to say, in the present application, a bottle mouth integrated valve 1 is provided at the bottle mouth end 210 of the gas storage bottle 200. When setting the air intake, the hydrogenation module 2 is directly connected to the bottle mouth integrated valve 1 through the air intake connecting pipe 57, thereby reducing the number of air intake connecting pipes 57.

[0050] When the pressure in the main flow channel of the gas cylinder 200 or the bottle mouth integrated valve 1 is too high, the high-pressure gas can be discharged to the exhaust pipe 53 and then discharged to the atmosphere to keep the gas pressure in the bottle or the pipe stable. When maintenance is required, the gas in the gas cylinder 200 can be discharged to the exhaust pipe 53 to exhaust the hydrogen in the gas cylinder 200, which is convenient for using tools to check and repair (for example, using a welding gun to reinforce local welding points) during maintenance, improving the convenience of maintenance and reducing safety hazards.

[0051] In the present application, by providing a bottle mouth integrated valve 1, the parts originally required to be provided on the air pipe can be integrated into the bottle mouth integrated valve 1, so that the number of parts that need to be connected on the external air pipe is reduced, and the number of air pipes that need to be cut off is reduced.

[0052] The solution of the present application can realize air intake, air supply, and pressure relief operations. Compared with the existing pipe and valve structure, it can simplify the pipeline connection structure, reduce the weight of the pipe and valve structure 100, reduce the complexity of the installation process, and is conducive to reducing the occupied space and reducing the risk of system leakage points.

[0053] Specifically, Figure 3 and Figure 6 As shown, the air inlet 101, the air outlet 102 and the discharge port 103 are arranged on the outer peripheral surface of the bottle mouth integrated valve 1 and are spaced apart along the circumferential direction. In this way, when the three ports are connected to the air pipe, the part where the three air pipes are connected to 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 rate and further reducing the space occupied by the pipe valve structure 100.

[0054] In some embodiments, Figure 4As shown, the pipe valve structure 100 also 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. The bottle tail valve 32 is provided with a tail port 321 for connecting 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 inside the gas cylinder 200, or when it needs to be repaired or maintained, the high-pressure gas can flow from the bottle tail end 220 of the gas cylinder 200 to the exhaust pipe 53 through the bottle tail valve 32 and the bottle body connecting pipe 55. 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 upwards, and the upper part of the exhaust pipe 53 is usually higher. The bottle tail end 220 of the gas cylinder 200 does not need to be provided with an exhaust pipe 53, and there is no need to set too many exhaust pipe avoidance structures or exhaust pipe fixing structures.

[0055] 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 in detail here.

[0056] In the present application, the pipe valve structure 100 further includes: a pressure reducing valve 31. Usually, in order to reduce the gas storage space, the gas is in a high pressure state in the gas storage cylinder 200, and the pressure is reduced when the gas is supplied to the gas-using device. Therefore, the pressure reducing valve 31 is provided to reduce the pressure of the gas discharged from the gas storage cylinder 200 to the gas supply pipe 51.

[0057] In the present application, the pressure reducing valve 31 can be built into the bottle mouth integrated valve 1 to form a part of the bottle mouth integrated valve 1. The bottle mouth integrated valve 1 can also be used as a separate valve body and arranged outside the bottle mouth integrated valve 1. Figure 3-Figure 4 Some embodiments and Figure 5-Figure 6 In some other embodiments, the pipe valve structure 100 in two cases is described respectively.

[0058] In some embodiments, Figure 3 and Figure 4 As shown, the pipe valve structure 100 further includes: a pressure reducing valve 31, which is located outside the bottle mouth integrated valve 1, and is connected to the gas outlet 102 via a pressure reducing connecting pipe 58, and the gas supply pipe 51 is connected to the pressure reducing valve 31. In this solution of arranging the bottle mouth integrated valve 1 and the pressure reducing valve 31 separately, the installation position of the pressure reducing valve 31 that bears an important pressure reducing function is not restricted by the position of the bottle mouth end 210 of the gas storage cylinder 200, and the structural requirements of the bottle mouth integrated valve 1 are relatively low.

[0059] Specifically, Figure 3 and Figure 4As shown, the pipe valve structure 100 also includes: a bottle tail valve 32 and a bottle body connecting pipe 55, the bottle tail valve 32 is installed at the bottle tail end 220 of the gas storage bottle 200, one end of the bottle body connecting pipe 55 is connected to the bottle tail valve 32, and the other end of the bottle body connecting pipe 55 is connected to the exhaust pipe 53. The pipe valve structure 100 includes a plurality of discharge connecting pipes 61, wherein one discharge connecting pipe 61 connects the bottle body connecting pipe 55 and the gas supply pipe 51, and for the convenience of distinction, the discharge connecting pipe 61 is called the first discharge sub-pipe 611. There is also a discharge connecting pipe 61 connecting the pressure reducing valve 31 and the exhaust pipe 53, and for the convenience of distinction, the discharge connecting pipe 61 is called the second discharge sub-pipe 612.

[0060] The first discharge sub-pipe 611 is provided so that the gas in the gas supply pipe 51 is discharged to the exhaust pipe 53 through the first discharge sub-pipe 611 when needed.

[0061] Of course, the switch of the first discharge sub-tube 611 is that a control valve for controlling the switch is provided at the connection between the first discharge sub-tube 611 or the air supply pipe 51 and the first discharge sub-tube 611. For example, the pipe valve structure 100 also includes a first manual valve 33, and the first manual valve 33 is connected in series to the first discharge sub-tube 611. In other words, by manually opening the first manual valve 33, the gas in the air supply pipe 51 can be manually forced to be discharged from the exhaust pipe 53. The first manual valve 33 is provided on the first discharge sub-tube 611, and the manual control opening is conducive to improving the accuracy of exhaust discharge and reducing the possibility of misoperation caused by electromagnetic control. Of course, in other embodiments of the present application, it is not ruled out that some schemes use an electric control valve to replace the first manual valve 33.

[0062] Specifically, the first discharge sub-pipe 611 is connected to the bottle body connecting pipe 55 and the air supply pipe 51, so as to improve the connection tightness of the air pipes and reduce the number of air pipes when the bottle tail exhaust structure is provided.

[0063] The second discharge sub-tube 612 is provided so that the gas in the pressure reducing valve 31 is discharged to the exhaust pipe 53 through the second discharge sub-tube 612 when necessary. Here, the switch of the second discharge sub-tube 612 is that a control valve for controlling the switch is provided at the connection between the second discharge sub-tube 612 or the pressure reducing valve 31 and the second discharge sub-tube 612. Optionally, the control valve can be a safety unloading valve. That is to say, when the gas pressure exceeds the set threshold at the pressure reducing valve 31, the safety unloading valve can be forced to open, and the medium-pressure gas can be discharged through the second discharge sub-tube 612. In this way, the operating reliability of the pressure reducing valve 31 can be improved and the service life can be extended. Here, the safety unloading valve can adopt the structure of the safety unloading valve known in the prior art.

[0064] In some embodiments, Figure 3As shown, the bottle mouth integrated valve 1 includes a second manual valve 11 provided at the discharge port 103. The discharge connecting pipe 61 includes: a third discharge sub-pipe 613, one end of the third discharge sub-pipe 613 is connected to the discharge port 103 and the other end is connected to the exhaust pipe 53. That is to say, 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 discharge port 103. The second manual valve 11 needs to be manually controlled to open, which is conducive to improving the accuracy of the discharge and exhaust of the gas storage valve 200 and reducing the possibility of misoperation caused by electromagnetic control.

[0065] Specifically, in Figure 3-Figure 4 In the illustrated embodiment, when the pressure reducing valve 31 is arranged in the bottle mouth integrated valve 1, the remaining valve bodies of the tube valve structure 100 are all built into the bottle mouth integrated valve 1. For example, the bottle mouth integrated valve 1 includes an air intake check valve 36 arranged at the air inlet 101, or an air outlet check valve arranged at the air outlet 102. In some schemes, the bottle mouth integrated valve 1 includes an air intake filter 37 arranged at the air inlet 101, and the air intake filter 37 can be arranged upstream or downstream of the air intake check valve 36 in the air intake direction. In this arrangement, there is no need to set a valve structure on the air intake connecting pipe 57, and the air intake connecting pipe 57 is not only reduced in weight and length, but also has a flexible shape. In some schemes, the air intake connecting pipe 57 is a single whole pipe, that is, the air intake connecting pipe 57 does not need to be cut off, which reduces the possibility of leakage points.

[0066] In other embodiments, Figure 5 and Figure 6 As shown, the pipe valve structure 100 further includes: a pressure reducing valve 31, which is built into the gas outlet 102 of the bottle mouth integrated valve 1. When gas supply is required, the pressure reducing valve 31 is integrated into the bottle mouth integrated valve 1, and it is not necessary to set a pressure reducing connecting pipe between the pressure reducing valve 31 and the bottle mouth integrated valve 1.

[0067] Specifically, a first discharge channel 12 is provided in the bottle mouth integrated valve 1, which is connected to the pressure reducing valve 31 and the discharge port 103 respectively. The first discharge channel 12 is provided so that the gas in the pressure reducing valve 31 is discharged to the discharge port 103 through the first discharge channel 12 when needed. Here, the switch of the first discharge channel 12 is that a control valve for controlling the switch is provided at the first discharge channel 12. Optionally, the control valve can be a safety unloading valve. That is to say, when the gas pressure at the pressure reducing valve 31 exceeds the set threshold, the safety unloading valve can be forced to open, and the medium-pressure gas is discharged through the first discharge channel 12. In this way, the operating reliability of the pressure reducing valve 31 can be improved and the service life can be extended. Here, the safety unloading valve can adopt the structure of the safety unloading valve known in the prior art.

[0068] Specifically, the bottle mouth integrated valve 1 is provided with a second discharge channel 13 respectively connecting the interior of the gas cylinder 200 and the discharge port 103. The second discharge channel 13 is provided so that the gas in the gas cylinder 200 is discharged to the exhaust pipe 53 through the second discharge channel 13 when needed.

[0069] Specifically, the bottle mouth integrated valve 1 is provided with a second discharge channel 13 respectively connected to the pressure reducing valve 31 and the discharge port 103. The second discharge channel 13 is provided so that the gas in the pressure reducing valve 31 is discharged to the exhaust pipe 53 through the second discharge channel 13 when needed.

[0070] Furthermore, the bottle mouth integrated valve 1 further comprises: a discharge control valve 35 provided on the second discharge channel 13. In this way, the gas in the gas storage valve 200 can be discharged through the discharge port 103 when necessary. For example, when the gas storage valve 200 needs to be inspected for safety, the gas in the gas storage bottle 200 can be quickly discharged through the above channel.

[0071] Here, the number of discharges and discharge conditions can be selected according to actual needs. For example, if only one dangerous situation needs to be discharged, there is one second discharge channel 13, and the discharge control valve 35 is used to open and discharge when the dangerous situation is encountered. For another example, if two dangerous situations need to be discharged, there can be two second discharge channels 13, and the discharge control valve 35 on each channel is used to open and discharge when each dangerous situation is encountered.

[0072] In some specific embodiments, Figure 7 As shown, the second discharge channel 13 includes at least two valves arranged in parallel, wherein the discharge control valve 35 on one of the second discharge channels 13 includes a third manual valve, and the discharge control valve 35 on the other second discharge channel 13 includes an over-temperature and over-pressure protection valve. The over-temperature and over-pressure protection valve can be opened to achieve automatic discharge when the gas temperature is detected to exceed the threshold value, as long as at least one of the two conditions is met. In this way, safety can be improved. Usually, when the gas temperature and pressure are reduced back to the normal range, the over-temperature and over-pressure protection valve will automatically close to maintain the normal use of the gas cylinder 200. The third manual valve can manually force the second discharge channel 13 to open if the user deems it necessary. For example, when the gas cylinder 200 needs to be repaired or disassembled, the third manual valve is used to force the gas to be discharged, thereby improving the safety of the repair or disassembly and avoiding the residual gas in the gas cylinder 200 from endangering life safety.

[0073] Specifically, Figure 7 As shown, the bottle mouth integrated valve 1 is provided with a third discharge channel 14 respectively connected to the gas outlet 102 and the discharge port 103. When necessary, the gas in the gas supply pipe 51 is discharged to the discharge port 103 and the exhaust pipe 53 through the third discharge channel 14, thereby further reducing the number and length of the gas pipes.

[0074] In some embodiments, Figure 3 As shown, a section of the air supply pipe 51 is a hose section 511. It is understandable that the air supply pipe 51 needs to be connected to the fuel cell. It is understandable that the vibration frequency of the fuel cell is different from that of the gas cylinder 200 due to internal structural factors. Moreover, the fuel cell is usually installed above the frame 500, and the gas cylinder 200 is suspended, and the vibration amplitudes generated by the two are also different during vibration. Therefore, a section of the air supply pipe 51 connected between the two is a hose section 511, which is conducive to balancing the differences in vibration frequency and vibration amplitude between the two, thereby reducing the internal stress on the air supply pipe 51 and reducing the risk of leakage due to breakage.

[0075] In some specific embodiments, the pressure reducing valve 31 is arranged outside the bottle mouth integrated valve 1, and a section of the gas supply pipe 51 connected to the pressure reducing valve 31 is a hose section 511, and the material of the hose section 511 itself has a buffering capacity. The hose section 511 is arranged at one end connected to the pressure reducing valve 31, and the gas can be buffered and depressurized by the hose section 511 as soon as it is decompressed and discharged, which is conducive to the subsequent stabilization of the gas supply pipe 51 and the gas entering the fuel cell.

[0076] Specifically, a section of the exhaust pipe 53 connected to the bottle mouth integrated valve 1 is a hose section 511. The material of the hose section 511 itself has a buffering capacity, which is beneficial to reducing the stress inside the exhaust pipe 53. In particular, the exhaust pipe 53 is usually relatively high, and the shaking amplitudes at the upper and lower ends are relatively large. The hose section 511 is beneficial to absorbing vibrations and reducing the risk of breakage.

[0077] In some embodiments, Figure 2 and Figure 3 As shown, the vehicle-mounted hydrogen system 1000 further includes: a bottle mouth fixing device 7 for fixing on the bottle mouth end 210 of the gas storage bottle 200 .

[0078] Specifically, the bottle mouth fixing device 7 includes: a clamp 71 and at least one mounting portion 72. The clamp 71 is annular and surrounds an annular opening. The clamp 71 is covered and clamped on the bottle mouth 210 of the gas storage bottle 200. The mounting portion 72 is arranged on the clamp 71, and the mounting portion 72 is connected to at least one of the air intake connecting pipe 57, the air supply pipe 51, and the exhaust pipe 53.

[0079] That is to say, in the present application, the bottle end fixing device 7 is fixed as a whole on the gas storage valve 200 by setting a clamp 71, and then the air pipe is fixed by using the mounting portion 72. In this way, the air pipe is fixed to the gas storage bottle 200 as a whole through the bottle 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 overall safety and reliability of the vehicle 10000 during driving, and reduces the risk of gas leakage.

[0080] Since the mounting portion 72 is used to fix the air pipe, the number and position of the air pipes fixed by the mounting portion 72 are not limited. In addition, the structure and position of the mounting portion 72 on the clamp 71 can also be flexibly set.

[0081] For example, the mounting portion 72 can be detachably mounted on the clamp 71, so that the number of mounting portions 72 can be selected. For example, the same bottle end fixing device 7 can be set on multiple types of vehicle-mounted hydrogen systems 1000, and the number of mounting portions 72 can be selected for each type of vehicle-mounted hydrogen system 1000 according to the number of air pipes.

[0082] The mounting portion 72 is detachably mounted on the clamp 71, which can also improve the convenience of installation of the pipe valve structure 100 to a certain extent. For example, some mounting portions 72 are sleeves, which are detachably connected to the clamp 71 after being sleeved on the air pipe. When the air pipe needs to be removed, the sleeve can be removed to loosen the air pipe, thereby facilitating the assembly and maintenance of the air pipe.

[0083] For another example, the position of the mounting portion 72 on the clamp 71 is adjustable, so that the fixing position of the mounting portion 72 on each air pipe can be adjusted as needed, thereby improving the adaptability and flexibility of the bottle end fixing device 7.

[0084] In some specific embodiments, Figure 3 As shown, the clamp 71 surrounds an annular opening, and the circumference of the annular opening can be adjusted. Specifically, the clamp 71 includes: a clamp 711, and the clamp 711 is at least two and arranged along the circumference of the annular opening, that is, at least two clamps 711 surround the bottle mouth end 210 of the gas cylinder 200. Then the clamp connector 712 is connected between two adjacent clamps 711, and an annular opening is surrounded between at least two clamps 711 and the clamp connector 712. The clamp connector 712 is used to adjust the gap size between two adjacent clamps 711 to adjust the circumference of the annular opening. Taking the clamp connector 712 as a bolt as an example, when the diameter of the gas cylinder 200 is large, the bolt rod between the two adjacent clamps 711 can be left longer to increase the circumference of the annular opening. When the diameter of the gas cylinder 200 is small, the bolt rod between the two adjacent clamps 711 can be left shorter to reduce the circumference of the annular opening.

[0085] The clamp 71 is formed by using a clamping plate 711, which has a high structural strength, can be connected to multiple positions, has a strong load-bearing capacity, and has a small deformation.

[0086] Furthermore, the bottle mouth fixing device 7 also includes an extension plate 73, one end of the extension plate 73 is connected to the clamp 71, and the other end is connected to the mounting portion 72, which improves the setting flexibility of the mounting portion 72 and reduces the overall occupied space.

[0087] In some specific embodiments, Figure 3As shown, when the pressure reducing valve 31 is arranged outside the bottle mouth integrated valve 1, the vehicle-mounted hydrogen system 1000 further includes: a support seat 75, the support seat 75 is connected to the clamp 71, and the pressure reducing valve 31 is installed on the support seat 75. In other words, the setting of the bottle mouth end fixing device 7 can also be used to hold up the support seat 75. The pressure reducing valve 31 can be installed on the support seat 75, reducing the difficulty of installing the pressure reducing valve 31.

[0088] This arrangement also helps to reduce the structural complexity of the gas cylinder mounting structure 400 of the gas storage valve 200, and there is no need to provide a larger mounting frame for heavier valve bodies such as the pressure reducing valve 31.

[0089] Specifically, in the prior art, the gas valve mounting structure of the gas cylinder adopts a frame, and then panels are installed on each side of the frame. The frame is relatively large and usually in a rectangular shape. The frame is mounted and connected to the vehicle frame, and the gas valve, valve body, pipeline and other structures are all installed on the frame. It is precisely because of the reasons such as the large number of valve bodies, heavy weight, and long pipelines in the prior art that the gas valve mounting structure of the gas cylinder has to adopt a frame structure, which puts a large load on the vehicle frame.

[0090] The gas cylinder mounting structure 400 of the present application includes a strap 410 and a cover 420. The strap 410 covers and fixes the gas cylinder 200, and is directly fixedly connected to the vehicle frame 500 by the strap 410. The cover 420 is then installed and connected to the strap 410 to provide dust and impact protection, thereby eliminating the heavy frame structure in the prior art.

[0091] After the gas cylinder mounting structure 400 adopts the structure of the strap 410 and the skin 420, the gas storage valve 200 is equivalent to being suspended laterally on the vehicle frame 500. At this time, the bottle mouth fixing device 7 is used to hold the gas storage valve 200 through the clamp 71, and then the air pipe is fixed by the mounting part 72, and the air pipe does not need to be connected to the frame. After the arrangement, the overall occupied volume and weight of the pipe valve structure 100 are reduced, and the burden on the gas cylinder mounting structure 400 is also reduced.

[0092] Furthermore, the bottle body connecting tube 55 is connected to the binding strap 410, which can reduce the shaking of the bottle body connecting tube 55 and reduce the risk of breakage.

[0093] According to the pipe and valve structure 100 of the embodiment of the utility model, it can adapt to the on-board hydrogen system 1000 that adopts a large-volume single gas storage cylinder solution. The number of pipe and valve components in the system is relatively small, which can greatly reduce the complexity of the pipeline structure of the on-board hydrogen system 1000. The saved pipe and valve components not only reduce the overall weight of the system, but also greatly reduce the number of connection points of the pipe and valve components in the system, reduce the risk of system leakage, and improve the safety of the hydrogen system.

[0094] This design greatly simplifies the pipeline structure and reduces the operational difficulty of pipeline integration. At the same time, it can greatly reduce the pipeline flow resistance, thereby reducing the hydrogen refueling time of fuel cell light trucks.

[0095] The bottle mouth fixing device 7 used in the present application greatly reduces the complexity of the air pipe fixing, ensures that the air pipe and the gas storage bottle 200 vibrate at the same frequency, reduces the risk of leakage at the pipe valve connection interface, and at the same time, the pipeline fixing points are arranged in a ring along the bottle mouth integrated valve 1, which greatly improves the overall stability of the system pipeline.

[0096] According to the vehicle-mounted hydrogen system 1000 of the embodiment of the utility model, Figure 1-Figure 7 As shown, it includes: a gas storage bottle 200 and the pipe valve structure 100 of the vehicle-mounted hydrogen system of the above embodiment, and the bottle mouth integrated valve 1 is installed at the bottle mouth end 210 of the gas storage bottle 200. The pipe valve structure 100 is not described here.

[0097] The vehicle-mounted hydrogen system 1000 can obtain the following after adopting the pipe valve structure 100: Figure 7 Compared with the pipe-valve structure provided in the prior art, the pipe-valve structure of the present application simplifies the overall pipe structure of the vehicle-mounted hydrogen system 1000.

[0098] By providing the above-mentioned pipe valve structure 100, the overall pipe connection structure of the vehicle-mounted hydrogen system 1000 is simple, the weight can be reduced, and the complexity of the installation process is reduced, which is beneficial to reducing the occupied space and reducing the risk of system leakage points.

[0099] The vehicle 10000 according to the embodiment of the utility model comprises: a vehicle body longitudinal beam 510 and the vehicle-mounted hydrogen system 1000 of the above embodiment, and the vehicle-mounted hydrogen system 1000 is installed on one side of the vehicle body longitudinal beam 510. In this way, the vehicle-mounted hydrogen system 1000 is installed on the vehicle frame 500 in a side-mounted manner, and does not need to occupy a large amount of space above the vehicle frame 500, which is conducive to increasing the cargo capacity of the vehicle 1000.

[0100] Specifically, the vehicle frame 500 includes two vehicle body longitudinal beams 510 and a vehicle body cross beam 520 connected between the two vehicle body longitudinal beams 510, and the vehicle-mounted hydrogen system 1000 is installed on one of the vehicle body longitudinal beams 510. At the location of the vehicle-mounted hydrogen system 1000, at least one vehicle body cross beam 520 is arranged on the vehicle frame 500. In this way, the vehicle-mounted hydrogen system 1000 and the vehicle frame 500 can form a load-bearing whole, thereby improving the anti-seismic capability.

[0101] According to the vehicle 10000 of the embodiment of the utility model, the space utilization rate of the on-board hydrogen system 1000 in the whole vehicle can be optimized, the layout space of the whole vehicle can be saved, the difficulty of the layout of the whole vehicle can be simplified, and the foundation for the diversified layout of the whole vehicle can be laid.

[0102] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0103] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle-mounted hydrogen system, characterized in that: include: A bottle mouth integrated valve, which is used to be installed at the bottle mouth end of the gas storage bottle, and is provided with an air inlet, an air outlet and a discharge port for communicating with the interior of the gas storage bottle; A hydrogenation module, the hydrogenation module is used to connect to a high-pressure hydrogen source, and the hydrogenation module is connected to the air inlet through an air inlet connecting pipe; an air supply pipe, the air supply pipe being connected to the air outlet and being used for connecting to a fuel cell; An exhaust pipe, one end of which is used to communicate with the atmosphere, and the other end of which is connected to the discharge port.

2. The vehicle-mounted hydrogen system according to claim 1, characterized in that: Also includes: A pressure reducing valve is built into the air outlet of the bottle mouth integrated valve.

3. The vehicle-mounted hydrogen system according to claim 2, characterized in that: The bottle mouth integrated valve is provided with a first discharge channel which is connected to the pressure reducing valve and the discharge port respectively; The bottle mouth integrated valve is provided with a second discharge channel which is connected to the inside of the gas storage bottle and the discharge port respectively; A third discharge channel is provided in the bottle mouth integrated valve, which is connected to the air outlet and the discharge port respectively.

4. The vehicle-mounted hydrogen system according to claim 1, characterized in that: Also includes: A pressure reducing valve is located outside the bottle mouth integrated valve, the pressure reducing valve is connected to the air outlet through a pressure reducing connecting pipe, and the air supply pipe is connected to the pressure reducing valve.

5. The vehicle-mounted hydrogen system according to claim 4, characterized in that: Also includes: A bottle tail valve, which is used to be installed at the bottle tail end of the gas storage bottle, and is provided with a tail port for communicating with the interior of the gas storage bottle; A bottle body connecting pipe, one end of which is connected to the tail port, and the other end of which is connected to the exhaust pipe; A discharge connecting pipe, one of the discharge connecting pipes is connected to the bottle connecting pipe and the air supply pipe, and the other discharge connecting pipe is connected to the pressure reducing valve and the exhaust pipe.

6. The vehicle-mounted hydrogen system according to any one of claims 1-5, characterized in that The air inlet, the air outlet and the discharge port are arranged on the outer peripheral surface of the bottle mouth integrated valve and are distributed at intervals along the circumferential direction. The section of the exhaust pipe connected to the bottle mouth integrated valve is a hose section.

7. The vehicle-mounted hydrogen system according to any one of claims 1 to 5, characterized in that: Also includes: A bottle end fixing device, the bottle end fixing device comprising: A clamping hoop, which is annular and surrounds an annular opening, and is wrapped around the mouth of the gas cylinder and is clamped on the mouth of the gas cylinder; At least one mounting portion is provided on the clamp, and the mounting portion is connected to at least one of the air intake pipe, the air supply pipe, and the exhaust pipe.

8. The vehicle-mounted hydrogen system according to claim 7, characterized in that: The mounting portion is detachably arranged on the clamp; and / or the mounting portion is positionally adjustable on the clamp.

9. The vehicle-mounted hydrogen system according to any one of claims 1 to 5, characterized in that: include: Gas storage cylinder, the bottle mouth integrated valve is installed at the bottle mouth end of the gas storage cylinder.

10. A vehicle, characterized in that: include: body longitudinal beams; The on-vehicle hydrogen system according to any one of claims 1-9, wherein the on-vehicle hydrogen system is installed on one side of the vehicle body longitudinal beam.

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