Combination valve, on-board hydrogen system and vehicle

Abstract

A combination valve (1), an on-board hydrogen system (1000), and a vehicle (10000), which relate to the technical field of valves. The combination valve (1) comprises: a first valve seat (11), which is provided with a gas inlet (101), a first communication port (104), a first connection port (111), a first passage (115) and a second passage (116), wherein the first passage (115) communicates the gas inlet (101) with the first communication port (104), and the second passage (116) communicates the first communication port (104) with the first connection port (111); a second valve seat (12), which is provided with a gas outlet (102), a second connection port (122) and a third passage (125), wherein the third passage (125) communicates the gas outlet (102) with the second connection port (122), the second valve seat (12) is detachably connected to the first valve seat (11), and the second connection port (122) is in connection and communication with the first connection port (111); a gas inlet control valve (131) for controlling the opening and closing state of the first passage (115); a gas outlet control valve (132) for controlling the opening and closing state of the third passage (125); and a regulating valve set (15) for regulating gas parameters at the gas outlet (102).

Description

Combined valve, vehicle-mounted hydrogen system and vehicle

[0001] Cross-reference to related applications

[0002] The present application is based on and claims priority to Chinese Patent Application No. 202410869465.4, filed on June 28, 2024, the entire contents of which are hereby incorporated by reference into the present application. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of valves, and in particular to a combined valve, a vehicle-mounted hydrogen system and a vehicle. BACKGROUND

[0004] Fuel cell hydrogen energy vehicles are vehicles that convert chemical energy generated by hydrogen reaction into mechanical energy by using hydrogen or hydrogen-containing substances and oxygen in the air to generate electricity in fuel cells, and supplying the electricity to electric motors to drive the vehicles to travel. At present, with the continuous development of new energy vehicles, hydrogen energy vehicles have gradually become an important choice.

[0005] In the hydrogen system, the gas cylinder is connected to the system through valve pieces and pipelines. For example, a pipe valve structure is arranged at the mouth of the gas cylinder to connect a hydrogen filling module, a fuel cell, a gas outlet pipe and the like, to complete the processes of hydrogen filling from the hydrogen filling port and hydrogen delivery to the fuel cell stack.

[0006] The valve structure used in the prior art is relatively simple, and the gas cylinder is connected to multiple valves at the mouth, resulting in a large number of valve pieces and complex pipeline structures, which makes the system pipeline difficult to assemble. The complex pipeline is prone to stress concentration at the pipeline interface, causing gas leakage.

[0007] Some solutions integrate multiple valves into a combined valve. However, the functions of the valves in the combined valve are fixed after processing, the scope of application is reduced, it is difficult to achieve mass production, and the cost is high. Moreover, the reliability of such a combined valve is at risk, and the processing difficulty is high.

[0008] SUMMARY

[0009] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0010] To this end, one object of the present disclosure is to provide a combined valve that integrates multiple valve bodies to simplify the connected pipeline structure, reduce the risk of gas leakage, reduce the occupied space, and can conveniently adjust parameters to expand the scope of application and reduce costs.

[0011] Another object of the present disclosure is to provide a vehicle-mounted hydrogen system having the above combined valve.

[0012] Still another object of the present disclosure is to provide a vehicle with the vehicle-mounted hydrogen system.

[0013] The combined valve according to the first aspect of the present disclosure comprises: a first valve seat, which is provided with an air inlet, a first communication port and a first interface, and is provided with a first channel and a second channel inside, the first channel communicating the air inlet and the first communication port, and the second channel communicating the first communication port and the first interface; a second valve seat, which is provided with an air outlet and a second interface, and is provided with a third channel inside, the third channel communicating the air outlet and the second interface, the second valve seat being detachably connected to the first valve seat, and the second interface being in communication with the first interface; an air inlet control valve, which is installed on the first valve seat and arranged on the first channel to control the opening and closing of the first channel; an air outlet control valve, which is installed on the second valve seat and arranged on the third channel to control the opening and closing of the third channel; and an adjusting valve group, which is installed on the second valve seat and arranged on the third channel to adjust the gas parameters of the air outlet.

[0014] The combined valve according to the first aspect of the present disclosure realizes the functions of air inlet and air outlet adjustment, and the adjusting valve group does not need to be arranged outside the combined valve, thereby reducing the number of pipe valve components connected outside the combined valve. Compared with the existing pipe valve structure, the pipe connection structure can be simplified, the weight of the manifold valve structure can be reduced, the installation process complexity of the pipe valve structure can be reduced, and the occupied space can be reduced, the risk of system gas leakage can be reduced, and the like.

[0015] The valve body of the combined valve is divided into the first valve seat and the second valve seat, which can reduce the processing difficulty. In addition, this structure arrangement enables the first valve seat and the second valve seat to adopt a processing scheme with high structural reliability, which is conducive to improving the rigidity and strength of the shell structure and ensuring the internal gas sealing performance.

[0016] In the present disclosure, the first valve seat and the second valve seat also facilitate the scale production of the combined valve, and the production scale is used to reduce the production cost. For users, when the adjusting parameters of the combined valve need to be changed, the first valve seat does not need to be replaced, and only the second valve seat needs to be replaced.

[0017] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is a perspective view of a combined valve according to some embodiments of the present disclosure;

[0019] Fig. 2 is a perspective view of the combined valve according to some embodiments of the present disclosure;

[0020] Fig. 3 is a schematic view of the internal flow path of the combined valve according to some embodiments of the present disclosure;

[0021] Fig. 4 is a sectional view of the combined valve according to some embodiments of the present disclosure in a front view;

[0022] Fig. 5 is another sectional view of the combined valve according to some embodiments of the present disclosure in a front view;

[0023] Fig. 6 is still another sectional view of the combined valve according to some embodiments of the present disclosure in a front view;

[0024] Fig. 7 is yet another sectional view of the combined valve according to some embodiments of the present disclosure in a front view;

[0025] Fig. 8 is a sectional view of the combined valve according to some embodiments of the present disclosure in a side view;

[0026] Fig. 9 is another sectional view of the combined valve according to some embodiments of the present disclosure in a side view;

[0027] Fig. 10 is still another sectional view of the combined valve according to some embodiments of the present disclosure in a side view;

[0028] Fig. 11 is a top structural view of a vehicle frame and the on-vehicle hydrogen system thereon according to some embodiments of the present disclosure;

[0029] Fig. 12 is a structural view of the on-vehicle hydrogen system in a front view according to some embodiments of the present disclosure;

[0030] Fig. 13 is an enlarged view of the on-vehicle hydrogen system in Fig. 12 with a hidden hydrogen filling module;

[0031] Fig. 14 is a structural view of the on-vehicle hydrogen system in a rear view according to some embodiments of the present disclosure.

[0032] Reference Signs:

[0033] vehicle 10000,

[0034] on-vehicle hydrogen system 1000,

[0035] combined valve 1,

[0036] inlet port 101, outlet port 102, discharge port 103, first communication port 104, second communication port 105,

[0037] first valve seat 11, first interface 111, third interface 113, first passage 115, first mating cavity 1151, second mating cavity 1152, second passage 116, first discharge channel 117, parallel port 118,

[0038] Second valve seat 12, second interface 122, fourth interface 124, third channel 125, third matching cavity 1251, second leakage passage 126, adjusting leakage passage 1261, gas outlet leakage passage 1262, leakage total passage 127, pressure relief cavity 128, pressure relief inlet 1281, pressure relief outlet 1282, mounting port 1283, breathing port 129,

[0039] Gas inlet control valve 131, gas outlet control valve 132,

[0040] Detection assembly 14, first gas pressure detection member 141, second gas pressure detection member 142, temperature detection member 143,

[0041] Adjusting valve group 15, pressure relief valve 151, pressure relief valve core 1511, pressure relief plug 1512, first elastic member 1513, cover 1514, first filter member 152,

[0042] First leakage control valve 16, over-temperature and over-pressure protection valve 161, second hand valve 162,

[0043] Second leakage control valve 17, first hand valve 171, safety unloading valve 172, first one-way valve 173,

[0044] Second filter member 181, parallel control valve 182, third hand valve 183, electromagnetic on-off valve 184,

[0045] Hydrogenation module 2,

[0046] Bottle tail valve 32, tail port 321,

[0047] Gas supply pipe 51, gas exhaust pipe 53, bottle body connecting pipe 55, gas inlet connecting pipe 57,

[0048] Bottle mouth end fixing device 7, clamp 71, clamping plate 711, clamping plate connecting member 712, mounting portion, extension plate,

[0049] Gas cylinder 200, bottle mouth end 210, bottle tail end 220,

[0050] Gas cylinder mounting structure 400, binding belt 410, skin 420,

[0051] Frame 500, vehicle body longitudinal beam 510, vehicle body transverse beam 520. DETAILED DESCRIPTION

[0052] Embodiments of the present disclosure are described in detail below with reference to examples thereof shown in the attached drawings, wherein the same or similar reference numerals represent the same or similar elements throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as limiting the present disclosure.

[0053] The combination valve 1 according to the embodiments of the present disclosure is described below with reference to FIGS. 1-10. It can be understood that the application scenarios of the combination valve 1 are not limited, and the combination valve 1 can be applied in devices requiring gas intake and gas regulation, such as hydrogen storage devices or chemical production devices.

[0054] The combination valve 1 according to the first aspect of the embodiments of the present disclosure, with reference to FIGS. 1-3, comprises a first valve seat 11 and a second valve seat 12.

[0055] The first valve seat 11 is provided with a gas inlet 101, a first communication port 104 and a first interface 111, and the first valve seat 11 is provided with a first passage 115 and a second passage 116. The first passage 115 communicates the gas inlet 101 and the first communication port 104, and the second passage 116 communicates the first communication port 104 and the first interface 111. The second valve seat 12 is provided with a gas outlet 102 and a second interface 122, and the second valve seat 12 is provided with a third passage 125. The third passage 125 communicates the gas outlet 102 and the second interface 122. The second valve seat 12 is detachably connected to the first valve seat 11, and the second interface 122 is in communication with the first interface 111.

[0056] With reference to FIGS. 3-5, the combination valve 1 further comprises a gas intake control valve 131, a gas outlet control valve 132 and a regulating valve group 15. The gas intake control valve 131 is installed on the first valve seat 11 and is arranged on the first passage 115 to control the opening and closing of the first passage 115. The gas outlet control valve 132 is installed on the second valve seat 12 and is arranged on the third passage 125 to control the opening and closing of the third passage 125. The regulating valve group 15 is installed on the second valve seat 12 and is arranged on the third passage 125 to regulate the gas parameters of the gas outlet 102.

[0057] For convenience of description, the combination valve 1 is taken as an example to be connected to a gas cylinder 200 to input and discharge gas in the following description. When the combination valve 1 is connected to the gas cylinder 200, the first communication port 104 communicates the inside of the gas cylinder 200. An external gas source is connected to the gas inlet 101, and a gas using device is connected to the gas outlet 102.

[0058] The combination valve 1 has a gas intake control function. After the gas intake control valve 131 is opened, the gas from the external gas source enters the gas cylinder 200 through the first passage 115. The combination valve 1 has a gas outlet control function. After the gas outlet control valve 132 is opened, the gas in the gas cylinder 200 can enter the gas using device through the second passage 116 and the third passage 125. The combination valve 1 has a gas outlet regulation function. When the regulating valve group 15 is operated, the gas flowing through the third passage 125 is regulated, so that the gas discharged from the gas outlet 102 reaches the set parameters.

[0059] The combination valve 1 structure of the present disclosure, by installing multiple valves on two valve seats, realizes the functions of adjusting the inlet and outlet of gas, and the adjusting valve group 15 does not need to be arranged outside the combination valve 1, thereby reducing the number of pipe valve components connected outside the combination valve 1. Compared with the existing pipe valve structure, the pipe connection structure can be simplified, the weight of the manifold valve structure is reduced, the installation process complexity of the pipe valve structure is reduced, and the occupied space is also reduced, and the risk of system gas leakage is reduced.

[0060] Here, the type of gas parameter adjusted by the adjusting valve group 15 is not limited, which can be gas pressure, humidity, temperature, etc., or can be set with odor additives, etc.

[0061] The combination valve 1 structure of the present disclosure has a large number of internal channels and valve body connection positions, and the valve body of the combination valve 1 is divided into a first valve seat 11 and a second valve seat 12, and the two valve seats are respectively machined with hole and channel structures, which can reduce the machining difficulty.

[0062] In addition, this structure allows the first valve seat 11 and the second valve seat 12 to adopt a machining scheme with high structural reliability, for example, the first valve seat 11 is a forged shaped part, that is, the general shape is first forged, and then the internal channels and external holes are machined, the forging can eliminate the casting porosity and other defects generated in the smelting process of the metal, optimize the microstructure, reduce the internal stress, and improve the structural strength and stiffness. For example, the first valve seat 11 is a 3D printed part, so as to ensure the structural stiffness and strength while optimizing the internal space design, which is conducive to improving the compactness and rationality of the internal channel arrangement. Of course, the first valve seat 11 can also be machined in other ways, such as using a cast part. Compared with the combination valve 1 for gas control, the first valve seat 11 machined by forging or 3D powder metallurgy printing technology has better internal sealing performance. Similarly, the second valve seat 12 can also be a forged shaped part or a 3D printed part.

[0063] In the present disclosure, the first valve seat 11 and the second valve seat 12 also facilitate the scale production of the combination valve 1, and the production scale is used to reduce the production cost. Specifically, for the production enterprises of the combination valve 1, different users have different gas outlet demands for the gas cylinder 200, for example, small gas using devices need to obtain low pressure gas from the gas cylinder 200, and large gas using devices need to obtain high pressure gas from the gas cylinder 200. At this time, when matching different gas using devices, the same combination valve 1 can be designed with two second valve seats 12 with different adjusting valve groups 15, and the first valve seat 11 structure is the same. In this way, the first valve seat 11 can be mass produced, and the second valve seat 12 with the adjusting valve group 15 can be customized, so as to reduce the production cost of each unit by using the scale effect.

[0064] In addition, when the user needs to change the adjustment parameter on the combination valve 1, the first valve seat 11 does not need to be replaced, only the second valve seat 12 needs to be replaced. Especially when the first valve seat 11 has been installed on the gas cylinder 200 and is inconvenient to disassemble, only the second valve seat 12 is very easy to disassemble.

[0065] In some optional embodiments, as shown in FIGS. 3 and 4, the air inlet control valve 131 is a one-way valve, so that when connected with the external gas source, the external gas flow is unidirectional to the first communication port 104 along the first channel 115. Specifically, the air inlet control valve 131 is detachably installed on the first valve seat 11. More specifically, the first channel 115 includes a first fitting cavity 1151, which forms an opening on one side of the first valve seat 11, and the air inlet control valve 131 is installed in the first fitting cavity 1151 and closes the opening. In this way, the machining of the internal channel of the first valve seat 11 becomes easy to operate, facilitating the machining of the hole from the first fitting cavity 1151 inward, and also facilitating the assembly, replacement, etc. of the air inlet control valve 131.

[0066] In some optional embodiments, as shown in FIGS. 3 and 4, a second filter 181 is further provided on the first channel 115, which is used to filter the air inlet, thereby improving the cleanliness of the gas entering the gas cylinder 200. Here, the type of the second filter 181 is not limited, which can be a filter wool, a hepa net, a stainless steel filter net, or a sintered filter element, etc.

[0067] Specifically, the second filter 181 is detachably installed on the first valve seat 11. More specifically, the first channel 115 includes a second fitting cavity 1152, which forms an opening on one side of the first valve seat 11, and the second filter 181 is installed in the second fitting cavity 1152 and closes the opening. In this way, the machining of the internal channel of the first valve seat 11 becomes easy to operate, facilitating the machining of the hole from the second fitting cavity 1152 inward, and also facilitating the assembly, replacement, etc. of the second filter 181.

[0068] Optionally, the openings of the first fitting cavity 1151 and the second fitting cavity 1152 are provided on opposite sides of the first valve seat 11, and are located on the same vertical line, which can improve the compactness.

[0069] In some embodiments, as shown in FIG. 3 and FIG. 4, the first valve seat 11 is provided with a parallel port 118 which is in communication with the first communication port 104, and the parallel port 118 is provided with a parallel control valve 182. The parallel port 118 can be connected to other devices, such as another gas cylinder 200, through a parallel pipe. When the intake control valve 131 and the parallel control valve 182 are both open, the two gas cylinders 200 can be filled with gas simultaneously when the gas is introduced into the intake port 101. When the gas is discharged from the first communication port 104 of the combination valve 1, and the parallel control valve 182 is open, the other gas cylinder 200 can be supplied with gas.

[0070] Optionally, the parallel control valve 182 is an overflow valve.

[0071] In particular, the parallel control valve 182 is detachably installed on the first valve seat 11, and the installation position of the parallel control valve 182 forms an opening on one side of the first valve seat 11, and the parallel control valve 182 closes the opening. This facilitates the assembly, replacement, etc. of the parallel control valve 182.

[0072] In some embodiments, the combination valve 1 further comprises a detection assembly 14 for detecting at least one gas parameter.

[0073] For example, the detection assembly 14 can be provided at the gas outlet 102 to determine whether the adjustment valve group 15 adjusts the gas to the required parameter. For another example, the detection assembly 14 can be provided at the gas inlet 101 to detect the state of the incoming gas.

[0074] In particular, as shown in FIG. 3 and FIG. 5, the detection assembly 14 further comprises a first gas pressure detection member 141 which is installed on the second valve seat 12. The cavity in which the first gas pressure detection member 141 is located is in communication with the gas outlet 102, and is used to detect the outlet gas pressure, thereby determining the state of the gas supply. In particular, the first gas pressure detection member 141 is detachably installed on the second valve seat 12, and the installation position of the first gas pressure detection member 141 forms an opening on one side of the second valve seat 12, and the first gas pressure detection member 141 closes the opening. This facilitates the assembly, replacement, etc. of the first gas pressure detection member 141.

[0075] In particular, as shown in FIG. 3 and FIG. 4, the detection assembly 14 further comprises a second gas pressure detection member 142 which is installed on the first valve seat 11. The cavity in which the second gas pressure detection member 142 is located is in communication with the first communication port 104, and is used to detect the inlet gas pressure. In this way, the state of the gas cylinder 200, such as whether it is full, can be determined by the inlet gas pressure.

[0076] Specifically, the second air pressure detecting member 142 is detachably installed on the first valve seat 11, and the installation position of the second air pressure detecting member 142 forms an opening on one side of the first valve seat 11, and the second air pressure detecting member 142 closes the opening, so as to facilitate the assembly, replacement and the like of the second air pressure detecting member 142. More specifically, the air inlet control valve 131, the second air pressure detecting member 142, and the parallel control valve 182 are arranged around the first communication port 104, and the passages connected with the first communication port 104 of the three are radially arranged, so as to improve the compactness of the parts arranged on the first valve seat 11.

[0077] Specifically, as shown in FIG. 3 and FIG. 8, the detection assembly 14 further comprises a temperature detecting member 143 installed on the first valve seat 11. The cavity in which the temperature detecting member 143 is arranged is in communication with the first communication port 104, and is used for detecting the air inlet temperature and determining the safety of the air inlet of the gas cylinder 200 and the like.

[0078] In some embodiments, as shown in FIG. 3, FIG. 4-FIG. 7, the combined valve 1 is provided with a discharge port 103, the first valve seat 11 is provided with a second communication port 105, and the first valve seat 11 is provided with a first discharge connecting channel 117, and the two ends of the first discharge connecting channel 117 are respectively in communication with the second communication port 105 and the discharge port 103. The combined valve 1 further comprises a first discharge control valve 16 arranged on the first discharge connecting channel 117. In this way, the gas in the gas cylinder 200 can be discharged through the second communication port 105, the first discharge connecting channel 117 and the discharge port 103 when needed. For example, when safety inspection of the gas cylinder 200 is needed, the gas in the gas cylinder 200 can be quickly discharged through the above-mentioned passage, and the discharged gas does not need to flow through the third passage 125, thereby avoiding the adverse effect of the discharged gas on the regulating valve group 15.

[0079] Here, the number of discharges and the discharge conditions can be selected according to actual needs. For example, only one discharge is needed when a dangerous situation occurs, and the first discharge connecting channel 117 is one, and the first discharge control valve 16 is used to open the discharge when the dangerous situation occurs. For another example, two discharges are needed when two dangerous situations occur, and the first discharge connecting channel 117 can be two, and the first discharge control valve 16 on each connecting channel is used to open the discharge when one of the dangerous situations occurs.

[0080] In some specific embodiments, as shown in FIG. 3 and FIG. 6, the first discharge connecting channel 117 comprises at least two parallelly arranged connecting channels, one of which comprises a second hand valve 162, and the other of which comprises an over-temperature and over-pressure protection valve 161.

[0081] The first relief control valve 16 comprises an over-temperature and over-pressure protection valve 161, which can be opened to realize automatic relief when the gas temperature is detected to exceed a threshold, at least one of the two conditions being met. In this way, safety can be improved. Generally, the over-temperature and over-pressure protection valve 161 can be automatically closed when the gas temperature and pressure are both reduced to the normal range, maintaining the normal use of the interior of the gas cylinder 200.

[0082] The first relief control valve 16 comprises a second hand valve 162, which can be used to forcibly open the first relief channel 117 when the user considers it necessary. For example, when the gas cylinder 200 needs to be repaired or disassembled, the second hand valve 162 can be used to forcibly release the gas, improving the safety of repair or disassembly and avoiding the danger of residual gas in the gas cylinder 200 to life safety.

[0083] Specifically, the first relief control valve 16 is detachably installed on the first valve seat 11, and the installation position forms an opening on one side of the first valve seat 11, which is closed by the first relief control valve 16. In this way, the assembly and replacement of the first relief control valve 16 are facilitated. In the embodiments shown in FIGS. 6 and 7, the first relief channel 117 comprises two channels, and each of the two channels is provided with a first relief control valve 16. The installation positions of the two first relief control valves 16 form openings on opposite sides of the first valve seat 11.

[0084] As shown in FIGS. 6 and 7, the part of the first relief channel 117 between the second communication port 105 and the first relief control valve 16 and the part between the first relief control valve 16 and the third interface 113 are located on different thickness layers of the first valve seat 11, so that the problem of weakness caused by too many holes on a certain thickness layer can be avoided.

[0085] Of course, the present disclosure can not be limited to this, for example, a separate temperature protection valve can be provided on one of the first relief channels 117, and a separate gas pressure protection valve can be provided on the other first relief channel 117. In another solution, there is no requirement for the temperature of the gas, and the temperature protection valve can be removed.

[0086] The valve body structure described above can adopt a corresponding valve body structure known in the prior art, which is not specifically limited here.

[0087] In some embodiments, as shown in FIG. 3 and FIG. 4, FIG. 5, a second relief passage 126 is provided in the second valve seat 12, and the two ends of the second relief passage 126 are respectively connected to the third channel 125 and the relief port 103. The combined valve 1 further comprises a second relief control valve 17 provided on the second relief passage 126. The relief position of the second relief passage 126 can be set as required. In this way, the gas (such as high-pressure gas or gas with composition problems) in the third channel 125 that is not required can be discharged. The second relief control valve 17 is provided to control the relief condition, and the second relief passage 126 is opened to discharge gas only when the condition is met.

[0088] In some specific embodiments, the second relief passage 126 comprises at least one adjustment relief passage 1261 extending to the adjustment valve group 15, and the second relief control valve 17 provided on the adjustment relief passage 1261 comprises a safety unloading valve 172. That is, when the gas pressure at the adjustment valve group 15 exceeds a set threshold, the safety unloading valve 172 is forcibly opened, and the medium-pressure gas is discharged through the adjustment relief passage 1261. In this way, the stability of the output pressure and the pressure entering the secondary pressure reduction device is mainly ensured, the problem of jamming is avoided, the operation reliability of the adjustment valve group 15 is improved, and the service life is prolonged. Here, the safety unloading valve 172 can adopt the structure of the safety unloading valve known in the prior art.

[0089] In some specific embodiments, the second relief passage 126 comprises an outlet relief passage 1262 extending to the outlet 102, and the second relief control valve 17 provided on the outlet relief passage 1262 comprises a first hand valve 171. In this way, the outlet relief passage 1262 can be artificially forced to open by the user when necessary. For example, when the gas supply pipe 51 described below needs to be repaired or replaced, the first hand valve 171 is used to forcibly discharge gas, to remove the residual gas in the gas supply pipe 51, or even to remove the residual gas in the entire system, or even to remove the residual gas in the gas cylinder 200, thereby reducing the risk to life safety. In addition, the gas supply pipe 51 is connected to a fuel cell, and such operation can also remove the residual hydrogen in the fuel cell, thereby avoiding the risk of explosion.

[0090] Specifically, as shown in FIG. 4 and FIG. 6, the first valve seat 11 is provided with a third interface 113, and the second valve seat 12 is provided with a fourth interface 124, and the third interface 113 and the fourth interface 124 are connected in communication.

[0091] The relief port 103 is located on the surface of the second valve seat 12, and the second valve seat 12 is provided with a relief main passage 127 connected to the relief port 103 at one end, and the other end of the relief main passage 127 is connected to the fourth interface 124, and the second relief passage 126 is connected to the relief main passage 127. The first relief passage 117 is connected to the third interface 113.

[0092] That is, in the above embodiment, only one bleed port 103 is provided, and the outlets of all the first bleed channels 117 and the second bleed channels 126 are arranged at the bleed port 103, so that multiple bleed ports 103 are not required, the number of surface pipe connections is reduced, and the utilization rate of the internal passage is improved.

[0093] The bleed total channel 127 is arranged so that all the bleed gases can be discharged after being collected in the bleed total channel 127, and the area of the bleed port 103 can easily meet the design parameter requirements of the bleed flow channel.

[0094] Of course, the bleed port 103 and the bleed total channel 127 can also be formed on the first valve seat 11 in the present disclosure, in which case the first valve seat 11 still needs to be provided with the third interface 113, and the second valve seat 12 still needs to be provided with the fourth interface 124, and the third interface 113 and the fourth interface 124 are in communication in a butt joint manner. One end of the bleed total channel 127 is in communication with the third interface 113, all the first bleed channels 117 are in communication with the bleed total channel 127, and the second bleed channel 126 is in communication with the fourth interface 124.

[0095] In some embodiments, as shown in FIGS. 5-9, in order to improve the compactness of the structure in the second valve seat 12 and reduce the overall size of the second valve seat 12, non-linear passages are used as much as possible when the first bleed channels 117 and the second bleed channels 126 are arranged, so that the bleed channels avoid other parts and passages.

[0096] For example, in the cross-sectional views of the combined valve 1 at various thickness positions, the first bleed channels 117 and the second bleed channels 126 cannot be shown at the same time, so as to facilitate understanding of the first bleed channels 117, the second bleed channels 126, and the valve body positions thereon, the first bleed channels 117 and the second bleed channels 126 and the valve body positions thereon are shown by dashed lines in FIG. 5. The first bleed channels 117 are two, and extend from the second communication port 105 to the third interface 113, one of which passes through the over-temperature and over-pressure protection valve 161, and the other of which passes through the second hand valve 162.

[0097] On the second valve seat 12, one end of the bleed total channel 127 extends to the fourth interface 124, and the other end extends to the bleed port 103. The second bleed channel 126 includes an adjustment bleed channel 1261 and an air outlet bleed channel 1262, the air outlet bleed channel 1262 extends from one end to the air outlet 102 and extends from the other end to the bleed total channel 127, and the air outlet bleed channel 1262 passes through the first hand valve 171. The adjustment bleed channel 1261 is two, and one end of each of the two adjustment bleed channels 1261 extends to one adjustment valve group 15, extends to the bleed total channel 127 through the safety unloading valve 172 and the first one-way valve 173. The two adjustment bleed channels 1261 share one first one-way valve 173.

[0098] Specifically, the outlet gas discharge channel 1262 is a non-straight passage, and in the example shown in FIG. 9, the outlet gas discharge channel 1262 includes at least three sections, namely a first section, a second section, and a third section. With a surface of the second valve seat 12 as a reference plane, an axis of the first section is arranged parallel to the reference plane, and optionally, the axis of the first section is arranged in the same plane as an axis of the connected regulating valve group 15, and the first section can be arranged vertically or obliquely to the axis of the regulating valve group 15. The second section is arranged vertically from an end of the first section, and the second section forms an opening on the surface of the second valve seat 12, and the first hand valve 171 is located in the second section and closes the opening. The third section is obliquely arranged from an inner wall of the second section to the discharge main channel 127.

[0099] Optionally, the regulating discharge channel 1261 can also adopt the scheme of the outlet gas discharge channel 1262, and through the multi-section design, the installation of the safety relief valve 172 is facilitated. Further optionally, the first one-way valve 173 is installed on the second valve seat 12, and the first one-way valve 173 is located on the opposite surfaces of the second valve seat 12 from the safety relief valve 172.

[0100] In some embodiments, as shown in FIGS. 3 and 4, the second discharge control valve 17 further includes a first one-way valve 173, which is installed on the second valve seat 12 and arranged on the regulating discharge channel 1261, and the first one-way valve 173 is located downstream of all the safety relief valves 172. The first one-way valve 173 is located upstream of the junction of the outlet gas discharge channel 1262, the first discharge channel 117, and the discharge port 103.

[0101] That is, the gas flowing from all the safety relief valves 172 needs to be discharged through the first one-way valve 173, and the gas discharged from the outlet gas discharge channel 1262 and the first discharge channel 117 cannot flow back to the regulating discharge channel 1261 through the first one-way valve 173.

[0102] In particular, in some schemes, the regulating valve group 15 has high regulating accuracy, and the pressure of the gas discharged from the gas cylinder 200 can be high. At this time, the first one-way valve 173 can prevent the high-pressure gas from impacting the regulating valve group 15, reduce the damage to the regulating valve group 15, and further improve the regulating accuracy and reliability.

[0103] In some embodiments, as shown in FIG. 5, the third passage 125 includes a pressure reduction cavity 128 having a pressure reduction inlet 1281 and a pressure reduction outlet 1282. The regulating valve group 15 includes a pressure reduction valve 151 arranged in the pressure reduction cavity 128. The arrangement of the pressure reduction valve 151 can adjust the outlet gas pressure of the combination valve 1, realize short-path internal gas pressure regulation, and reduce the unstable influence of external factors on the gas pressure regulation.

[0104] Specifically, the pressure reduction cavities 128 include at least one, and each pressure reduction cavity 128 is provided with a pressure reduction valve 151. This facilitates assembly and reduces mutual interference.

[0105] Further, when at least two pressure reduction cavities 128 are provided, the pressure reduction cavities 128 are sequentially arranged along the air inlet direction of the third channel 125 to gradually reduce the pressure. This achieves at least two stages of pressure reduction, and thus the single-stage pressure reduction ratio can be reduced, thereby reducing the valve core load and reducing damage to the valve core caused by excessive pressure difference between the pressure reduction inlet 1281 and the pressure reduction outlet 1282.

[0106] In addition, when at least two stages of pressure reduction are provided, different stages can achieve different goals. For example, a larger pressure reduction ratio can be provided for the first stage of pressure reduction, and a smaller pressure reduction ratio can be provided for the second stage of pressure reduction. After the pressure reduction ratio of the second stage of pressure reduction is reduced, a higher control accuracy can be provided, and the overall pressure reduction ratio obtained is large and accurate.

[0107] In some embodiments, the pressure reduction valve 151 is two, which are a first-stage pressure reduction valve and a second-stage pressure reduction valve, and the first-stage pressure reduction valve is upstream of the second-stage pressure reduction valve in the flow direction. Specifically, as shown in FIG. 5, the second valve seat 12 is provided with a breathing port 129 that is connected to the first-stage pressure reduction valve, so that the first-stage pressure reduction valve is in communication with the external environment, thereby improving the pressure regulation accuracy. The second-stage pressure reduction valve can also be provided with a breathing port 129, or the two-stage pressure reduction valves can share a breathing port 129.

[0108] Specifically, as shown in FIG. 5, the pressure reduction valve 151 includes a pressure reduction valve core 1511 and a first elastic member 1513. The pressure reduction valve core 1511 is movable in the pressure reduction cavity 128, and the first elastic member 1513 is connected to the pressure reduction valve core 1511 to drive the pressure reduction valve core 1511 to move towards the pressure reduction inlet 1281. One end of the pressure reduction valve core 1511 towards the pressure reduction inlet 1281 is a pressure reduction plug 1512, and the circumference of the pressure reduction plug 1512 gradually increases along the air flow direction of the pressure reduction inlet 1281. The pressure reduction inlet 1281 forms a tapered port that is matched with the pressure reduction plug 1512. In this way, stable pressure reduction can be achieved.

[0109] Specifically, the elastic force of the first elastic member 1513 exerts a pre-tightening force on the pressure reducing valve core 1511, so that the pressure reducing plug 1512 abuts against the inner wall surface of the pressure reducing inlet 1281. When there is no gas flow, the pre-tightening force makes the pressure reducing plug 1512 seal the pressure reducing inlet 1281. When there is gas flow, the gas flow overcomes the spring force, so that the pressure reducing plug 1512 gradually moves away from the inner wall surface of the pressure reducing inlet 1281. During the opening process, the area of the end surface of the pressure reducing plug 1512 on which the gas flow acts is increasing. Due to the plugging of the pressure reducing plug 1512, when the pressure reducing plug 1512 is opened, the gas flow enters the pressure reducing cavity 128 from the outer periphery of the pressure reducing plug 1512, and the area through which the gas flow enters is an annular area, which has a small flow area and forms a throttling effect on the gas flow, thereby reducing the gas flow pressure. The gas flow pressure acting on the pressure reducing plug 1512 is equal to the product of the acting area and the pressure, and in the equilibrium state, the gas flow pressure is equal to the pre-tightening force exerted by the first elastic member 1513. Therefore, when the pre-tightening force exerted by the first elastic member 1513 is determined, the adjusted gas pressure is also substantially determined after the gas flow stably passes through the pressure reducing plug 1512, so that a relatively determined adjusted gas pressure can be obtained.

[0110] Further, the pressure reducing cavity 128 has a mounting opening 1283 at the end away from the pressure reducing inlet 1281, and the mounting opening 1283 is formed on the surface of the second valve seat 12. The pressure reducing valve 151 includes a cover 1514 detachably connected to the mounting opening 1283, and the pressure reducing valve core 1511 is located between the pressure reducing inlet 1281 and the cover 1514. In this way, the pressure reducing cavity 128 can be machined from the surface of the second valve seat 12, and then the adjacent third channel 125 can be machined inward from the pressure reducing cavity 128, so that the machining of the internal channels of the second valve seat 12 becomes easy to operate. Moreover, this also facilitates the assembly, replacement, etc. of the pressure reducing valve 151.

[0111] In some specific embodiments, as shown in FIGS. 3 and 5, the adjusting valve group 15 further includes a first filter member 152 for filtering the gas flow to improve the cleanliness of the gas. Here, the type of the first filter member 152 is not limited, and can be a filter wool, a Hepa net, a stainless steel filter net, or a sintered filter element, etc.

[0112] Specifically, the first filter 152 is detachably installed on the second valve seat 12. More specifically, the third passage 125 comprises a third matching cavity 1251, which is formed with an opening on one side of the second valve seat 12, and the first filter 152 is installed in the third matching cavity 1251 and closes the opening. This makes the machining of the internal passage of the second valve seat 12 easy to operate, facilitates the machining of the hole from the third matching cavity 1251 inward, and also facilitates the assembly, replacement, etc. of the first filter 152. Optionally, the gas outlet control valve 132 is integrally arranged on the cover 1514 of the pressure reducing valve 151 adjacent to the gas outlet 102. This is equivalent to integrating the pressure reducing valve 151 and the gas outlet control valve 132, which is beneficial to reducing the overall volume of the combined valve 1.

[0113] Specifically, the gas outlet control valve 132 can be a solenoid valve, which can be controlled to open by an electric signal when the gas using device needs to use gas.

[0114] In some embodiments, in order to improve the controllability of the inlet gas, an electromagnetic on-off valve 184 is further arranged at the first communication port 104, so that the electromagnetic on-off valve 184 controls the opening and closing of the first communication port 104 when receiving an electric signal.

[0115] Specifically, a third hand valve 183 is further arranged at the first communication port 104, and the third hand valve 183 is a hand-operated stop valve, so that the first communication port 104 can be manually closed when the gas cylinder needs to be closed.

[0116] The vehicle-mounted hydrogen system 1000 according to the second aspect of the present disclosure will be described below with reference to FIGS. 1-14.

[0117] The vehicle-mounted hydrogen system 1000 according to the embodiments of the present application, as shown in FIG. 11, is installed on a vehicle 10000 and serves as a matched pipe valve structure of the gas cylinder 200. It should be noted that in the prior art, the number of gas cylinders installed on a vehicle is usually large, and the matched pipe valve structure is also relatively complex. For example, there are at least two gas inlet connecting pipes connected to the hydrogenation module, one connected to the gas cylinder and the other connected to the pressure reducing valve. The number of gas inlet connecting pipes is large and the pipeline is long. Various filters and control valves are arranged on the gas inlet connecting pipes, which results in the need to cut off the connecting pipe body. The above factors result in problems such as complex pipeline connection structure, heavy weight, complex installation process, large space occupation, high risk of system gas leakage, etc.

[0118] To solve the above problems, the vehicle-mounted hydrogen system 1000 provided by the present disclosure includes a gas cylinder 200, a fuel cell, a hydrogenation module 2, and the combined valve 1 of the above-mentioned embodiments. The combined valve 1 is installed at the bottle mouth end 210 of the gas cylinder 200. The gas inlet 101 is connected to the hydrogenation module 2. The first communication port 104 is in communication with the inside of the gas cylinder 200. The gas outlet 102 is connected to the fuel cell. Specifically, the vehicle-mounted hydrogen system 1000 further includes a gas supply pipe 51 and an exhaust pipe 53.

[0119] The hydrogenation module 2 is used to connect a high-pressure hydrogen source. The hydrogenation module 2 is connected to the gas inlet 101 through the gas inlet connecting pipe 57. The gas supply pipe 51 is connected to the gas outlet 102 and is used to connect the fuel cell. One end of the exhaust pipe 53 is used to communicate with the atmosphere. The other end of the exhaust pipe 53 is connected to the relief port 103.

[0120] That is, in the present disclosure, by arranging the combined valve 1 at the bottle mouth end 210 of the gas cylinder 200, when the gas inlet is arranged, the combined valve 1 is directly connected by the hydrogenation module 2 through the gas inlet connecting pipe 57. There is no need to arrange another gas inlet connecting pipe between the hydrogenation module 2 and the pressure reducing valve, thereby reducing the number of gas inlet connecting pipes.

[0121] When the gas pressure in the gas cylinder 200 or the main flow passage inside the combined valve 1 is too high, the high-pressure gas can be discharged to the exhaust pipe 53 and then discharged to the atmosphere, so that the gas pressure in the gas cylinder or the pipe can be kept stable. When maintenance is needed, the gas in the gas cylinder 200 can be discharged to the exhaust pipe 53, so that the hydrogen gas in the gas cylinder 200 is emptied. In this way, it is convenient to use tools for inspection and maintenance (for example, using a welding gun to reinforce local welds) during maintenance, thereby improving the convenience of maintenance and reducing safety hazards.

[0122] In the present disclosure, by arranging the combined valve 1, the parts originally arranged on the gas pipe can be integrated into the combined valve 1, so that the number of parts that need to be connected on the external gas pipe is reduced, and the number of gas pipes that need to be cut is reduced.

[0123] The scheme of the present disclosure can realize gas inlet, gas supply, and pressure relief operations. Compared with the existing pipe valve structure, the pipe connection structure can be simplified, the weight of the pipe valve structure can be reduced, the complexity of the installation process can be reduced, and the occupied space can be reduced, the risk of system gas leakage can be reduced, and the like.

[0124] In some embodiments, as shown in FIG. 13, the gas inlet 101, the gas outlet 102, and the relief port 103 are arranged on the outer peripheral surface of the combined valve 1 and are distributed in a circumferential direction. In this way, when three gas pipes are connected to the combined valve 1, the parts of the three gas pipes connected to the combined valve 1 can be arranged in the flat space where the combined valve 1 is located, which is conducive to improving the space utilization rate and further reducing the occupied space.

[0125] In some embodiments, as shown in FIG. 14, the bottle tail valve 32 and the bottle body connecting pipe 55 are provided, the bottle tail valve 32 is arranged at the bottle tail end 220 of the gas cylinder 200, and the bottle tail valve 32 is provided with a tail port 321 for communicating with the inside of the gas cylinder 200. One end of the bottle body connecting pipe 55 is connected to the tail port 321, and the other end of the bottle body connecting pipe 55 is connected to the exhaust pipe 53. In this way, when there is a risk in the gas cylinder 200 or when it needs to be overhauled and 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, the exhaust safety of the gas cylinder 200 is improved, and the number of exhaust pipes 53 is reduced. In particular, the exhaust pipe 53 needs to exhaust gas upward, and the exhaust pipe 53 is usually arranged at a higher position upward. The bottle tail end 220 of the gas cylinder 200 does not need to be additionally provided with an exhaust pipe 53, and does not need to be provided with excessive exhaust pipe avoiding structures or exhaust pipe fixing structures.

[0126] Here, the structure of the bottle tail valve 32 itself can adopt the structure of the bottle tail valve 32 known in the prior art, and the structure will not be described here.

[0127] In some embodiments, as shown in FIG. 12 and FIG. 13, the vehicle-mounted hydrogen system 1000 further comprises a bottle mouth end fixing device 7. Specifically, the bottle mouth end fixing device 7 comprises a clamp 71, which is annular and surrounds an annular port, and the clamp 71 is sleeved on and clamped on the bottle mouth end 210 of the gas cylinder 200. In some embodiments, the bottle mouth end fixing device 7 comprises a mounting portion (not shown in the figure), which is arranged on the clamp 71 and is connected to the gas pipe. That is, in the present disclosure, the bottle mouth end fixing device 7 is fixed on the gas cylinder 200 as a whole by arranging the clamp 71, and then the gas pipe is fixed by using the mounting portion. In this way, the gas pipe is fixed to the gas cylinder 200 through the bottle mouth end fixing device 7, which improves the overall structural strength and rigidity, reduces the shaking amplitude of the vehicle-mounted hydrogen system 1000 during operation, improves the safety and reliability of the whole during driving of the vehicle 10000, and reduces the risk of gas leakage.

[0128] In some embodiments, as shown in FIG. 13, the hoop 71 encloses an annular opening, and the circumference of the annular opening is adjustably arranged. Specifically, the hoop 71 comprises at least two clamping plates 711 arranged along the circumference of the annular opening, i.e. at least two clamping plates 711 enclose the mouth end 210 of the gas cylinder 200. Then a clamping plate connector 712 is connected between adjacent two clamping plates 711, and the annular opening is enclosed between the at least two clamping plates 711 and the clamping plate connector 712. The clamping plate connector 712 is used to adjust the size of the gap between adjacent two clamping plates 711, so as to adjust the circumference of the annular opening. Taking the clamping plate connector 712 as a bolt as an example, when the caliber of the gas cylinder 200 is large, the bolt rod between adjacent two clamping plates 711 can be left long, so that the circumference of the annular opening is increased. When the caliber of the gas cylinder 200 is small, the bolt rod between adjacent two clamping plates 711 can be left short, so that the circumference of the annular opening is decreased.

[0129] The hoop 71 formed by the clamping plate 711 has large structural strength, can be connected at multiple positions, has strong bearing capacity and small deformation.

[0130] The vehicle-mounted hydrogen system 1000 of the present disclosure helps to reduce the structural complexity of the gas cylinder mounting structure 400 of the gas cylinder 200, and does not need to provide a large mounting frame for the heavy valve body of the pressure reducing valve.

[0131] Specifically, in the prior art, the gas valve mounting structure of the gas cylinder adopts a frame, and then a panel is mounted on each side of the frame. The frame is large and usually has a cuboid shape. The frame is mounted and connected on the vehicle frame, and the gas cylinder, the valve body and the pipeline are all mounted on the frame. Due to the large number of valve bodies, the large weight and the long pipeline in the prior art, the gas valve mounting structure of the gas cylinder has to adopt a frame structure, which greatly increases the load on the vehicle frame.

[0132] The gas cylinder mounting structure 400 of the present disclosure comprises a band 410 and a skin 420, the band 410 is sleeved and fixed on the gas cylinder 200, and the band 410 is directly fixed and connected on the vehicle frame 500, and then the skin 420 is mounted and connected on the band 410 to prevent dust and impact, so that the heavy frame structure in the prior art is cancelled.

[0133] After the gas cylinder mounting structure 400 adopts the band 410 and the skin 420 structure, the gas cylinder 200 is equivalent to being suspended laterally on the vehicle frame 500. At this time, the mouth end fixing device 7 is used to hold the gas cylinder 200 by the hoop 71, and then the gas pipe is fixed by the mounting portion, and the gas pipe does not need to be connected on the frame. After such arrangement, the overall occupied volume and weight of the vehicle-mounted hydrogen system 1000 are reduced, and the burden on the gas cylinder mounting structure 400 is also reduced.

[0134] Further, the bottle body connecting pipe 55 is connected to the strap 410, which can reduce the shaking of the bottle body connecting pipe 55 and reduce the risk of breakage.

[0135] The vehicle-mounted hydrogen system 1000 according to the embodiment of the present application can be suitable for a vehicle-mounted hydrogen system 1000 adopting a large-volume single-gas cylinder scheme, has a small number of valve components in the system, can greatly reduce the complexity of the pipeline structure of the vehicle-mounted hydrogen system 1000, and can greatly reduce the number of connection points of the valve components in the system while saving the valve components to reduce the risk of system leakage and improve the safety of the hydrogen system.

[0136] The design greatly simplifies the pipeline structure, reduces the operation difficulty of pipeline integration, and greatly reduces the pipeline flow resistance, thereby reducing the hydrogenation time of the fuel cell light truck.

[0137] The bottle mouth end fixing device 7 adopted in the present application greatly reduces the complexity of gas pipe fixation, ensures the same frequency of vibration of the gas pipe and the gas cylinder 200, reduces the risk of leakage of the valve component connection interface, and simultaneously arranges the pipeline fixing points in a ring shape along the combination valve 1, thereby greatly improving the stability of the entire system pipeline.

[0138] The vehicle 10000 according to the embodiment of the present application comprises the vehicle-mounted hydrogen system 1000 of the above embodiment. The vehicle 10000 is provided with such a vehicle-mounted hydrogen system 1000, the risk of leakage of the vehicle-mounted hydrogen system 1000 is reduced, the occupied space is smaller, the driving safety of the vehicle 10000 is higher, and the carrying capacity of the vehicle 10000 is increased.

[0139] Specifically, 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 by side hanging, does not need to occupy a large amount of space above the vehicle frame 500, and is beneficial to improve the carrying capacity of the vehicle 1000.

[0140] Specifically, the vehicle frame 500 comprises 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 least one vehicle body cross beam 520 is arranged on the vehicle frame 500 at the position of the vehicle-mounted hydrogen system 1000. In this way, the vehicle-mounted hydrogen system 1000 and the vehicle frame 500 form a force-bearing whole, and the vibration resistance is improved.

[0141] In the description of the disclosure, it needs to be understood that the terms "center", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the disclosure.

[0142] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0143] In the disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the disclosure can be understood according to the specific circumstances.

[0144] In the disclosure, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0145] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0146] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present disclosure, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A combination valve, wherein, The combination valve comprises: a first valve seat, which is provided with an air inlet, a first communication port and a first interface, and is provided with a first passage and a second passage in the first valve seat, the first passage communicates the air inlet and the first communication port, and the second passage communicates the first communication port and the first interface; a second valve seat, which is provided with an air outlet and a second interface, and is provided with a third passage in the second valve seat, the third passage communicates the air outlet and the second interface, the second valve seat is detachably connected to the first valve seat, and the second interface is in butt joint communication with the first interface; an air inlet control valve, which is installed on the first valve seat and is arranged on the first passage to control the opening and closing of the first passage; an air outlet control valve, which is installed on the second valve seat and is arranged on the third passage to control the opening and closing of the third passage; an adjusting valve group, which is installed on the second valve seat and is arranged on the third passage to adjust the gas parameters of the air outlet.

2. The combination valve of claim 1, wherein, The combination valve is provided with a relief port, the first valve seat is provided with a second communication port, and the first valve seat is provided with a first relief connection in the first valve seat, the two ends of the first relief connection are respectively communicated with the second communication port and the relief port; The combination valve further comprises a first relief control valve arranged on the first relief connection.

3. The combination valve of claim 2, wherein, The second valve seat is provided with a second relief connection, and the two ends of the second relief connection are respectively communicated with the third passage and the relief port; The combination valve further comprises a second relief control valve arranged on the second relief connection.

4. The combination valve of claim 3, wherein, The first valve seat is provided with a third interface, and the second valve seat is provided with a fourth interface, the third interface is in butt joint communication with the fourth interface; The relief port is located on the surface of the second valve seat, the second valve seat is provided with a relief main passage with one end communicated with the relief port, and the other end of the relief main passage is communicated with the fourth interface, and the second relief connection is communicated with the relief main passage; The first relief connection is communicated with the third interface.

5. The combination valve of any one of claims 3 or 4, wherein, The second relief connection is at least two, and comprises: at least one adjusting relief connection extending to the adjusting valve group, the second relief control valve on the adjusting relief connection comprises a safety unloading valve; an air outlet relief connection extending to the air outlet, and the second relief control valve on the air outlet relief connection comprises a first hand valve.

6. The combination valve of claim 5, wherein, The second relief control valve further comprises a first check valve, which is installed on the second valve seat and arranged on the adjusting relief connection, and located downstream of all the safety unloading valves; The first check valve is located upstream of the junction of the air outlet relief connection, the first relief connection and the relief port.

7. The combination valve of any one of claims 2-6, wherein, The first relief connection comprises at least two in parallel, wherein the first relief control valve on one of the first relief connections comprises a second hand valve, and the first relief control valve on the other first relief connection comprises an over-temperature and over-pressure protection valve.

8. The combination valve of any one of claims 1-7, wherein, The third passage comprises a pressure reduction cavity, which has a pressure reduction inlet and a pressure reduction outlet; The adjusting valve group comprises a pressure reducing valve arranged in the pressure reducing cavity; The pressure reducing cavity comprises at least one, and each of the pressure reducing cavities is arranged with a pressure reducing valve; When there are at least two pressure reducing cavities, the pressure reducing cavities are arranged in sequence along the gas inlet direction of the third channel to gradually reduce the pressure.

9. The combination valve of claim 8, wherein, The pressure reducing valve comprises a pressure reducing valve core and a first elastic member, the pressure reducing valve core is movable in the pressure reducing cavity, and the first elastic member is connected with the pressure reducing valve core to drive the pressure reducing valve core to move towards the pressure reducing inlet; An end of the pressure reducing valve core towards the pressure reducing inlet is a pressure reducing plug, the circumference of the pressure reducing plug gradually increases along the gas direction of the pressure reducing inlet, and the pressure reducing inlet forms a tapered port matched with the pressure reducing plug; The pressure reducing cavity has a mounting port at an end away from the pressure reducing inlet, and the mounting port is formed on the surface of the second valve seat; The pressure reducing valve comprises a cover detachably connected at the mounting port, and the pressure reducing valve core is located between the pressure reducing inlet and the cover; The gas outlet control valve is integrally arranged on the cover of the pressure reducing valve adjacent to the gas outlet.

10. An on-board hydrogen system, wherein, Comprise: A gas cylinder, a fuel cell, and a hydrogenation module; The combination valve according to any one of claims 1-9 is arranged at the bottle mouth end of the gas cylinder, the gas inlet is connected with the hydrogenation module, the first communication port is in communication with the inside of the gas cylinder, and the gas outlet is connected with the fuel cell.

11. A vehicle, wherein, Comprise: The vehicle-mounted hydrogen system according to claim 10.

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