Bottle mouth combination valve, hydrogen storage bottle group and vehicle-mounted hydrogen supply system

Abstract

The invention relates to the technical field of hydrogen storage equipment, in particular to a bottle opening combination valve, a hydrogen storage bottle set and a vehicle-mounted hydrogen supply system. The bottle mouth combination valve comprises a shell, a first valve body, a filling valve, a second valve body and a TPRD module. The first valve body comprises a filling channel, an air supply channel and a discharging channel. The filling channel is communicated with the hydrogen storage cylinder; the gas supply channel is communicated with the hydrogen storage cylinder; the discharge channel is communicated with the hydrogen storage cylinder; the filling valve is arranged in the filling channel; the second valve body is arranged in the air supply channel; the TPRD module is arranged in the discharge channel. According to the bottle opening combination valve provided by the invention, a highly integrated design is adopted, so that the use of a plurality of independent valves is avoided, and leakage points of a vehicle-mounted hydrogen system are reduced; the first valve body is provided with an independent filling channel, an independent gas supply channel and an independent discharge channel, the safety of pressurization, gas supply and discharge is guaranteed, hydrogen does not pass through the second valve body in the filling process, and the influence of temperature change and flutter phenomena generated in the filling process on the valve can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage equipment, and in particular, to a bottle mouth combined valve, a hydrogen storage bottle group and a vehicle-mounted hydrogen supply system. Background Art

[0002] A fuel cell can directly convert chemical energy into electrical energy, and has the advantages of high energy conversion efficiency, low pollution, wide fuel sources, low noise, high reliability and easy maintenance. A vehicle-mounted hydrogen supply system for a fuel cell generally consists of a hydrogen filling port, a high-pressure gas cylinder, a bottle mouth valve, a pressure reducing valve, a safety valve, a relief valve, a pressure sensor and pipeline connectors. Among them, the bottle mouth combined valve is a core component of the vehicle-mounted hydrogen supply system and usually has the following functions: 1) An electromagnetic opening / closing control function for high-pressure gas in the gas cylinder; 2) A one-way filling function for the hydrogen storage bottle; 3) An automatic relief function in case of fire or high temperature; 4) A manual closing function for high-pressure gas; 5) A function with overcurrent protection; 6) A manual relief function in an emergency state; 7) A function of filtering impurities in the filling gas and the gas in the gas cylinder; 8) A function of real-time monitoring of the temperature in the gas cylinder.

[0003] However, the bottle mouth combined valve in the related art has the following defects: 1) The product integration degree is low, increasing the leakage points and leakage risks of the vehicle-mounted hydrogen system; 2) The gas supply and filling share a single channel, resulting in that the hydrogen filling process passes through a high-pressure solenoid valve, which is prone to generate a flutter phenomenon and affects the service life of the solenoid valve. Summary of the Invention

[0004] The present invention provides a bottle mouth combined valve, a hydrogen storage bottle group and a vehicle-mounted hydrogen supply system to solve the defects of low product integration degree and sharing a single channel for gas supply and filling existing in the bottle mouth combined valve in the prior art.

[0005] The present invention provides a bottle mouth combined valve, comprising: A housing; A first valve body, installed on the housing, and the first valve body includes: A filling channel, communicated with a hydrogen storage gas cylinder; A gas supply channel, communicated with the hydrogen storage gas cylinder; A relief channel, communicated with the hydrogen storage gas cylinder; A filling valve, installed on the housing and disposed in the filling channel; A second valve body, installed on the housing and disposed in the gas supply channel; The TPRD module is installed on the housing and disposed in the relief channel.

[0006] The bottle mouth combined valve provided by the present invention further includes: A manual shut-off valve disposed in the filling channel; A filling filter disposed in the filling channel; A connector disposed at one end of the filling channel away from the hydrogen storage cylinder; Wherein, the filling valve is sequentially connected to the manual shut-off valve, the filling filter and the connector through the filling channel.

[0007] The bottle mouth combined valve provided by the present invention, the bottle mouth combined valve further includes: A gas supply valve disposed in the gas supply channel; An overcurrent protection valve disposed in the gas supply channel; A gas supply filter disposed in the gas supply channel; Wherein, the second valve body is sequentially connected to the gas supply valve, the overcurrent protection valve and the gas supply filter through the gas supply channel.

[0008] For the bottle mouth combined valve provided by the present invention, a TPRD discharge port is formed at the first end of the relief channel, the second end of the relief channel communicates with the hydrogen storage cylinder, and the third end of the relief channel is connected to the filling filter.

[0009] The bottle mouth combined valve provided by the present invention further includes: A relief valve disposed in the relief channel and located between the second end of the relief channel and the filling filter.

[0010] For the bottle mouth combined valve provided by the present invention, both the manual shut-off valve and the relief valve include: A valve cover; A valve core movably disposed in the valve cover; A first valve flap movably disposed in the valve cover; A rotating valve stem movably disposed on the valve cover and connected to the valve core and the first valve flap.

[0011] For the bottle mouth combined valve provided by the present invention, the filling valve includes: A body; A second valve flap movably disposed inside the body; A primary valve seat fixed inside the body; A secondary valve seat fixed inside the body; Wherein, when the hydrogen pressure in the filling valve is less than a preset pressure threshold, the second valve and the first valve seat are in sealing contact; when the hydrogen pressure in the filling valve is equal to or greater than the preset pressure threshold, the second valve and the second valve seat are in sealing contact.

[0012] According to the bottle mouth combined valve provided by the present invention, the filling valve further includes: A gland, fixed inside the body, and pressing and fixing the first valve seat and the second valve seat inside the body; An elastic member, one end connected inside the body, and the other end connected to the second valve.

[0013] The present invention also provides a hydrogen storage bottle group, including: The bottle mouth combined valve of the present invention; A hydrogen storage cylinder, and the bottle mouth combined valve is arranged at the bottle mouth of the hydrogen storage cylinder.

[0014] The present invention also provides a vehicle-mounted hydrogen supply system, including: the bottle mouth combined valve of the present invention, or, the hydrogen storage bottle group of the present invention.

[0015] According to the vehicle-mounted hydrogen supply system provided by the present invention, it further includes: A hydrogen filling port; A diverter, arranged downstream of the hydrogen filling port and communicated with the bottle mouth combined valve; A first pressure sensor, arranged on the diverter; A pressure reducing valve, connected downstream of the diverter; A safety valve, connected downstream of the diverter; A pressure relief valve, connected downstream of the diverter; A second pressure sensor, connected downstream of the diverter; A controller, in signal connection with the first pressure sensor and the second pressure sensor.

[0016] A bottle mouth combined valve provided by the present invention. The bottle mouth combined valve includes: a housing, a first valve body, a filling valve, a second valve body, and a TPRD module. The first valve body is installed on the housing; it includes: a filling channel, a gas supply channel, and a relief channel. The filling channel is communicated with the hydrogen storage cylinder; the gas supply channel is communicated with the hydrogen storage cylinder; the relief channel is communicated with the hydrogen storage cylinder; the filling valve is installed on the housing and arranged in the filling channel; the second valve body is installed on the housing and arranged in the gas supply channel; the TPRD module is installed on the housing and arranged in the relief channel. The bottle mouth combined valve provided by the present invention integrally installs the first valve body, the filling valve, the second valve body, and the TPRD module through the housing, adopts a highly integrated design to avoid using multiple independent valves, and reduces the leakage points of the vehicle-mounted hydrogen system; the first valve body is provided with separate filling channels, gas supply channels, and relief channels to ensure the safety of pressurization, gas supply, and relief. The hydrogen filling process does not pass through the second valve body, which can avoid the influence of temperature changes and flutter phenomena generated during the filling process on the valve.

[0017] Furthermore, the present invention also provides a vehicle-mounted hydrogen supply system. Since it includes the bottle mouth combined valve in the above-mentioned embodiment of the present invention, it has the same advantages as above.

[0018] Even further, the present invention also provides a vehicle-mounted hydrogen supply system. Since it includes the bottle mouth combined valve or the hydrogen storage bottle group in the above-mentioned embodiment of the present invention, it has the same advantages as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall structure of the bottle mouth combined valve provided in one embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the principle of the bottle mouth combined valve provided in one embodiment of the present invention.

[0022] Figure 3 It is a schematic diagram of the internal structure of the first valve body provided in one embodiment of the present invention.

[0023] Figure 4 It is a top view of the first valve body provided in one embodiment of the present invention.

[0024] Figure 5 It is a schematic diagram of the internal structure of the manual stop valve or relief valve provided in one embodiment of the present invention.

[0025] Figure 6 It is a schematic diagram of the internal structure of the filling valve provided in one embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the overall structure of the hydrogen storage bottle group provided in one embodiment of the present invention.

[0027] Figure 8 It is a schematic diagram of the principle of the vehicle-mounted hydrogen supply system provided in one embodiment of the present invention.

[0028] Reference numerals: 001: Connector; 002: TPRD discharge port; 003: Hydrogen filling port; 004: Shunt; 005: First pressure sensor; 006: Pressure reducing valve; 007: Safety valve; 008: Pressure relief valve; 009: Second pressure sensor; 010: Bottle neck combination valve; 014: Hydrogen storage bottle; 100: First valve body; 011: Filling channel; 012: Gas supply channel; 013: Discharge channel; 200: TPRD module; 300: Second valve body; 400: Overcurrent protection valve; 500: Gas supply valve; 600: Temperature sensor; 700: Manual shut-off valve; 800: Discharge valve; 900: Filling valve; 1000: Filling filter; 1100: Gas supply filter; 701: Valve cover; 704: Valve core; 705: First valve flap; 708: Rotating valve stem; 902: Second valve flap; 903: First valve seat; 904: Second valve seat; 905: gland; 906: Elastic member. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of this embodiment, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this embodiment 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 should not be construed as a limitation to this embodiment.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this embodiment, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0032] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] The following Figures 1 - 6 describes a bottle mouth combined valve of the present invention. The bottle mouth combined valve includes: a housing, a first valve body 100, a filling valve 900, a second valve body 300, and a TPRD module 200.

[0035] Among them, the first valve body 100 is installed on the housing; it includes: a filling channel 011, a gas supply channel 012, and a relief channel 013.

[0036] The filling channel 011 is communicated with the hydrogen storage cylinder 014; the gas supply channel 012 is communicated with the hydrogen storage cylinder 014; the relief channel 013 is communicated with the hydrogen storage cylinder 014; the filling valve 900 is installed on the housing and is arranged in the filling channel 011; the second valve body 300 is installed on the housing and is arranged in the gas supply channel 012; the TPRD module 200 is installed on the housing and is arranged in the relief channel 013.

[0037] Specifically, the bottle neck combined valve has a housing, which is used to install and support each part of the structure. Through the housing, structures such as the first valve body 100, the filling valve 900, the second valve body 300, the TPRD module 200, and the temperature sensor 600 (the temperature sensor 600 is used to monitor the temperature change in the gas cylinder in real time) are integrally installed. The bottle neck combined valve provided by the present invention integrally installs each part of the structure through the housing, with high product integration, realizing functions such as one-way filling, cut-off, overcurrent protection, and safety relief of hydrogen, reducing the leakage points of the hydrogen supply system, and improving safety and reliability.

[0038] Specifically, the filling channel 011 is communicated with the inlet and outlet joint at the end of the housing, which is used to fill hydrogen into the hydrogen storage cylinder 014 for internal storage; the gas supply channel 012 is also communicated with the inlet and outlet joint at the end of the housing, which is used to supply the hydrogen inside the hydrogen storage cylinder 014 to the fuel cell system for use; the relief channel 013 is communicated with the discharge pipeline, which is used to discharge gas to ensure that the internal pressure of the hydrogen storage cylinder 014 is within a safe range.

[0039] Specifically, the filling valve 900 is arranged at one end of the filling channel 011 close to the hydrogen storage cylinder 014, and it can adopt a filling check valve to ensure one-way filling of hydrogen and avoid leakage. When hydrogen filling is required, the filling valve 900 is opened to fill hydrogen into the hydrogen storage cylinder 014; when filling needs to be stopped, the filling valve 900 is closed.

[0040] Specifically, the second valve body 300 is arranged in the gas supply channel 012, and it can adopt a high-pressure solenoid valve. During hydrogen filling, the hydrogen will not pass through the second valve body 300. The high-pressure solenoid valve consists of a pilot valve and a main valve.

[0041] Solenoid valve opening process: a. Pilot valve opening: After the electromagnetic coil is energized, a magnetic field is generated. In the magnetic field, the armature and the keeper generate an electromagnetic force that attracts each other. Under the action of the electromagnetic force, the keeper drives the pilot valve core to move upward together, overcoming the differential pressure force at both ends of the pilot hole and the action of the spring, and the pilot valve opens.

[0042] b. Main valve opening: After the pilot valve is opened, the gas on the upper side of the main valve moves quickly through the pilot hole and is discharged to the downstream of the main valve. When the pressure downstream of the main valve is balanced with the pressure upstream of the main valve, the main valve moves upward continuously under the action of electromagnetic force, and the main valve opens.

[0043] Electromagnetic valve closing process: When the hydrogen storage system ECU sends an electromagnetic valve closing instruction, the magnetic field inside the coil disappears, the electromagnetic force on the armature disappears, and the armature moves downward under the action of the spring. The pilot valve closes, and the main valve contacts the valve seat, achieving sealing under the action of the differential pressure force and the spring force.

[0044] Specifically, the TPRD module (full English name: Thermal Pressure Relief Device; full Chinese name: Thermal Pressure Relief Device or simply Pressure Relief Device) includes a sensitive element that can respond to changes in temperature and / or pressure; once the preset safety threshold is reached, this element will trigger and open a channel to allow gas to escape from the storage tank. The TPRD module 200 is provided in the relief channel 013 to relieve hydrogen pressure in a high-temperature environment and prevent the high-pressure hydrogen in the hydrogen storage cylinder from exploding in a fire.

[0045] Preferably, the TPRD module 200 uses a glass temperature sensing bulb, with stable activation conditions and relief flow rate, and no creep and jump phenomena. Its specific working principle is as follows: When the ambient temperature reaches 110 ± 5 °C, the glass temperature sensing bulb breaks, and the piston opens under the action of the spring force and the gas cylinder pressure. The hydrogen in the gas storage cylinder is discharged through the relief channel and the TPRD discharge port, preventing the high-pressure hydrogen in the hydrogen storage cylinder from exploding in a fire. Therefore, during assembly and in a normal temperature environment, it is necessary to ensure the integrity of the glass temperature sensing bulb structure and prevent non-temperature-driven damage.

[0046] The first valve body 100 is provided with a separate filling channel, a gas supply channel, and a relief channel. The hydrogen filling process does not pass through the second valve body 300, which can avoid the influence of temperature changes and flutter phenomena generated during the filling process on the second valve body 300. Preferably, the second valve body 300 uses an electromagnetic valve.

[0047] A bottle mouth combined valve provided by the present invention. The bottle mouth combined valve includes: a housing, a first valve body 100, a filling valve 900, a second valve body 300, and a TPRD module 200. The first valve body 100 is installed on the housing; it includes: a filling channel 011, a gas supply channel 012, and a relief channel 013. The filling channel 011 is communicated with a hydrogen storage cylinder 014; the gas supply channel 012 is communicated with the hydrogen storage cylinder 014; the relief channel 013 is communicated with the hydrogen storage cylinder 014; the filling valve 900 is installed on the housing and is arranged in the filling channel 011; the second valve body 300 is installed on the housing and is arranged in the gas supply channel 012; the TPRD module 200 is installed on the housing and is arranged in the relief channel 013. The bottle mouth combined valve provided by the present invention integrally installs the first valve body 100, the filling valve 900, the second valve body 300, and the TPRD module 200 through the housing, adopts a highly integrated design to avoid using multiple independent valves, and reduces the leakage points of the vehicle-mounted hydrogen system; the first valve body 100 is provided with a separate filling channel, a gas supply channel, and a relief channel to ensure the safety of pressurization, gas supply, and relief. The hydrogen filling process does not pass through the second valve body, which can avoid the influence of temperature changes and flutter phenomena generated during the filling process on the valve.

[0048] In one embodiment of the present invention, the bottle mouth combined valve further includes: a manual shut-off valve 700, a filling filter 1000, and a joint 001. The manual shut-off valve 700 is arranged in the filling channel 011; the filling filter 1000 is arranged in the filling channel 011; the joint 001 is arranged at one end of the filling channel 011 far from the hydrogen storage cylinder 014. Among them, the filling valve 900 is sequentially connected to the manual shut-off valve 700, the filling filter 1000, and the joint 001 through the filling channel 011.

[0049] In the above embodiment, the joint 001 can realize the functions of inlet or outlet under different working conditions. During the filling process, gas enters through the joint 001; during the gas supply process, gas is supplied to the fuel cell system through the joint 001. The handle of the manual shut-off valve 700 is installed outside the housing, which is convenient for manual operation by personnel. The manual shut-off of hydrogen filling in the filling channel 011 can be realized by operating the manual shut-off valve 700; the filled hydrogen is filtered through the filling filter 1000 to ensure the cleanliness of the filled hydrogen.

[0050] In one embodiment of the present invention, the bottle mouth combined valve further includes: a gas supply valve 500, an overcurrent protection valve 400, and a gas supply filter 1100. Among them, the gas supply valve 500 is arranged in the gas supply channel 012; the overcurrent protection valve 400 is arranged in the gas supply channel 012; the gas supply filter 1100 is arranged in the gas supply channel 012. Among them, the second valve body 300 is sequentially connected to the gas supply valve 500, the overcurrent protection valve 400, and the gas supply filter 1100 through the gas supply channel 012.

[0051] In the above embodiment, the second valve body 300 adopts a high-pressure solenoid valve, and its opening and closing are controlled by the vehicle-mounted ECU. The gas supply valve 500 adopts a one-way gas supply valve to ensure one-way hydrogen supply. The overcurrent protection valve 400 is composed of an overcurrent valve flap and an overcurrent valve spring; when the pipeline downstream of the bottle mouth combined valve ruptures and the flow rate increases abnormally, the overcurrent valve flap closes under the action of the pressure difference force to achieve current limiting and avoid abnormal discharge. The gas supply filter 1100 filters hydrogen during the gas supply process to ensure clean hydrogen supply.

[0052] In one embodiment of the present invention, a TPRD discharge port 002 is formed at the first end of the discharge channel 013, the second end of the discharge channel 013 communicates with the hydrogen storage cylinder 014, and the third end of the discharge channel 013 is connected to the filling filter 1000. In this embodiment, when the external environmental temperature reaches the threshold value, the TPRD module opens the TPRD discharge port 002 at one end of the discharge channel 013, and the high-pressure hydrogen is relieved through the TPRD discharge port 002. On the other hand, the second end of the discharge channel 013 communicates with the inside of the hydrogen storage cylinder 014, and the third end of the discharge channel 013 is connected to the filling filter 1000. When the internal pressure of the hydrogen storage cylinder 014 is too high, the high-pressure hydrogen can be discharged from the joint 001 through the discharge channel along the filling filter 1000. It can be seen that through the above arrangement in this embodiment, pressure relief can be achieved in a high-temperature environment and also when the internal pressure of the hydrogen storage cylinder 014 is high, thereby ensuring the safety of hydrogen storage.

[0053] In one embodiment of the present invention, the bottle mouth combined valve further includes: a relief valve 800, which is arranged in the discharge channel 013 and is located between the second end of the discharge channel 013 and the filling filter 1000. In this embodiment, by arranging a relief valve 800 between the hydrogen storage cylinder 014 and the joint, when pressure relief is required, the relief valve 800 is opened, and the high-pressure hydrogen in the hydrogen storage cylinder 014 is discharged through the joint to achieve pressure relief.

[0054] In one embodiment of the present invention, both the manual shut-off valve 700 and the relief valve 800 include: a valve cover 701, a valve core 704, a first valve flap 705, and a rotating valve stem 708. Specifically, the valve core 704 is movably arranged in the valve cover 701; the first valve flap 705 is movably arranged in the valve cover 701; the rotating valve stem 708 is movably arranged on the valve cover 701 and is connected to the valve core 704 and the first valve flap 705. In this embodiment, the manual shut-off valve 700 and the relief valve 800 adopt the same structure, and the rotating valve stem 708 among them is installed outside the housing for manual operation. By operating the rotating valve stem 708, the valve core 704 is actuated to open or close the valve body.

[0055] In addition, both the above-mentioned manual stop valve 700 and the bleed valve 800 are unloading structures, with relatively small opening and closing torques and high service life. The valve core 704 has a ball head structure and has self - adaptability. The first valve flap 705 is made of PEEK or PI material. The first valve flap 705 and the valve body are soft - hard sealed, and good sealing performance can be achieved with a relatively small tightening torque. The manual stop valve 700 and the bleed valve 800 are also configured with structures such as friction rings, sealing rings, and retaining rings.

[0056] In one embodiment of the present invention, the filling valve 900 includes: a body, a second valve flap 902, a primary valve seat 903, and a secondary valve seat 904. Among them, the second valve flap 902 is movably disposed inside the body; the primary valve seat 903 is fixed inside the body; the secondary valve seat 904 is fixed inside the body. Among them, when the hydrogen pressure inside the filling valve 900 is less than the preset pressure threshold, the second valve flap 902 and the primary valve seat 903 are in sealing contact; when the hydrogen pressure inside the filling valve 900 is equal to or greater than the preset pressure threshold, the second valve flap 902 and the secondary valve seat 904 are in sealing contact.

[0057] In the above - mentioned embodiment, a two - stage sealing structure is adopted. That is, when the filling valve 900 is subjected to hydrogen pressure, when in a low - pressure condition below 2 MPa, the second valve flap 902 and the primary valve seat 903 come into contact to achieve sealing; when in a condition above 2 MPa, the second valve flap 902 and the secondary valve seat 904 come into contact to achieve sealing, thereby ensuring reliable one - way sealing of the filling check valve within a pressure range of 0.5 - 70 MPa.

[0058] In one embodiment of the present invention, the filling valve 900 further includes: a gland 905 and an elastic member 906. Specifically, the gland 905 is fixed inside the body and presses the primary valve seat 903 and the secondary valve seat 904 tightly and fixes them inside the body; one end of the elastic member 906 is connected inside the body, and the other end is connected to the second valve flap 902. Specifically, inside the filling valve 900, the primary valve seat 903 and the secondary valve seat 904 are pressed by the gland 905 to fix the two valve seats inside the body, which has the functions of support and fixation. The elastic force provided by the elastic member 906 serves as the closing force of the valve flap, thereby realizing the check function of the filling valve.

[0059] In one embodiment of the present invention, both the above - mentioned filling filter 1000 and the gas supply filter 1100 adopt a replaceable filter element design. The filter element of the filter adopts a three - layer stainless - steel sintered filter screen and is supported by a porous stainless - steel bracket to improve the pressure - shock resistance performance of the filter element; at the same time, the filter element and the bracket are designed separately, which is convenient for the replacement and maintenance of the filter element.

[0060] As Figure 7As shown in the figure, the present invention also provides a hydrogen storage bottle group. The hydrogen storage bottle group includes: the bottle mouth combined valve 010 and the hydrogen storage bottle 014 in the above-mentioned embodiments of the present invention.

[0061] Specifically, the bottle mouth combined valve 010 is arranged at the bottle mouth of the hydrogen storage bottle 014 and is used to realize functions such as hydrogen filling, gas supply, and pressure relief.

[0062] The present invention also provides a vehicle-mounted hydrogen supply system. Since it includes the bottle mouth combined valve in the above-mentioned embodiments of the present invention, it has the same advantages as above.

[0063] As Figure 8 shown in the figure, the present invention also provides a vehicle-mounted hydrogen supply system. The vehicle-mounted hydrogen supply system includes: the bottle mouth combined valve 010 in the above-mentioned embodiments of the present invention, or the hydrogen storage bottle group in the above-mentioned embodiments of the present invention.

[0064] The present invention also provides a vehicle-mounted hydrogen supply system. Since it includes the bottle mouth combined valve or the hydrogen storage bottle group in the above-mentioned embodiments of the present invention, it has the same advantages as above.

[0065] In one embodiment of the present invention, the vehicle-mounted hydrogen supply system further includes: a hydrogen filling port 003, a flow divider 004, a first pressure sensor 005, a pressure reducing valve 006, a safety valve 007, a pressure relief valve 008, a second pressure sensor 009, and a controller. Among them, the flow divider 004 is arranged downstream of the hydrogen filling port 003 and is connected to the bottle mouth combined valve 010; the first pressure sensor 005 is arranged on the flow divider 004; the pressure reducing valve 006 is connected downstream of the flow divider 004; the safety valve 007 is connected downstream of the flow divider 004; the pressure relief valve 008 is connected downstream of the flow divider 004; the second pressure sensor 009 is connected downstream of the flow divider 004; the controller is in signal connection with the first pressure sensor 005 and the second pressure sensor 009.

[0066] In the above-mentioned embodiment, the pressure reducing valve 006, the safety valve 007, and the pressure relief valve 008 are sequentially connected on the branch downstream of the flow divider 004. The hydrogen filling port 003 can provide hydrogen filling for a plurality of bottle mouth combined valves 010 through the flow divider 004. The first pressure sensor 005 is a high-pressure pressure sensor, the second pressure sensor 009 is a low-pressure pressure sensor, and the pressure relief valve 008 is a low-pressure relief valve 008.

[0067] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined valve for the bottle mouth, characterized in that, Comprising: A housing; A first valve body (100), mounted on the housing, the first valve body (100) comprising: A filling passage (011), communicating with a hydrogen storage cylinder (014); A gas supply passage (012), communicating with the hydrogen storage cylinder (014); A relief passage (013), communicating with the hydrogen storage cylinder (014); A filling valve (900), mounted on the housing and provided in the filling passage (011); A second valve body (300), mounted on the housing and provided in the gas supply passage (012); A TPRD module (200), mounted on the housing and provided in the relief passage (013).

2. The bottle mouth combined valve according to claim 1, wherein Further comprising: A manual shut-off valve (700), provided in the filling passage (011); A filling filter (1000), provided in the filling passage (011); A joint (001), provided at one end of the filling passage (011) away from the hydrogen storage cylinder (014); Wherein, the filling valve (900) is sequentially connected to the manual shut-off valve (700), the filling filter (1000) and the joint (001) through the filling passage (011).

3. The bottle mouth combined valve according to claim 2, wherein The bottle neck combination valve further comprises: A gas supply valve (500), provided in the gas supply passage (012); An overcurrent protection valve (400), provided in the gas supply passage (012); A gas supply filter (1100), provided in the gas supply passage (012); Wherein, the second valve body (300) is sequentially connected to the gas supply valve (500), the overcurrent protection valve (400) and the gas supply filter (1100) through the gas supply passage (012).

4. The bottle mouth combined valve according to claim 2, characterized in that, A first end of the relief passage (013) is formed with a TPRD discharge port (002), a second end of the relief passage (013) communicates with the hydrogen storage cylinder (014), and a third end of the relief passage (013) is connected to the filling filter (1000).

5. The bottle mouth combined valve according to claim 4, characterized in that, Further comprising: A relief valve (800), provided in the relief passage (013) and located between the second end of the relief passage (013) and the filling filter (1000).

6. The bottle mouth combined valve according to claim 5, characterized in that, Both the manual shut-off valve (700) and the relief valve (800) comprise: A valve cover (701); A valve core (704), movably provided within the valve cover (701); A first valve flap (705), movably provided within the valve cover (701); A rotating valve stem (708), movably provided on the valve cover (701) and connected to the valve core (704) and the first valve flap (705).

7. The bottle mouth combined valve according to any one of claims 1 to 6, characterized in that The filling valve (900) comprises: A body; A second valve flap (902), movably provided inside the body; A primary valve seat (903), fixed inside the body; A secondary valve seat (904), fixed inside the body; Wherein, when the hydrogen pressure in the filling valve (900) is less than a preset pressure threshold, the second valve (902) and the first valve seat (903) are in sealing contact; when the hydrogen pressure in the filling valve (900) is equal to or greater than the preset pressure threshold, the second valve (902) and the second valve seat (904) are in sealing contact.

8. The bottle mouth combined valve according to claim 7, wherein, The filling valve (900) further includes: A gland (905) fixed inside the body and pressing and fixing the first valve seat (903) and the second valve seat (904) inside the body; An elastic member (906) with one end connected inside the body and the other end connected to the second valve (902).

9. A hydrogen storage cylinder group, characterized in that, It includes: The bottle mouth combined valve (010) according to any one of claims 1 to 8; A hydrogen storage cylinder (014) with the bottle mouth combined valve (010) provided at the bottle mouth of the hydrogen storage cylinder (014).

10. A vehicle-mounted hydrogen supply system, characterized in that, It includes: The bottle mouth combined valve (010) according to any one of claims 1 to 8, or the hydrogen storage cylinder group according to claim 9.

11. The on-vehicle hydrogen supply system according to claim 10, characterized in that, It further includes: A hydrogen filling port (003); A diverter (004) provided downstream of the hydrogen filling port (003) and communicating with the bottle mouth combined valve (010); A first pressure sensor (005) provided on the diverter (004); A pressure reducing valve (006) connected downstream of the diverter (004); A safety valve (007) connected downstream of the diverter (004); A pressure relief valve (008) connected downstream of the diverter (004); A second pressure sensor (009) connected downstream of the diverter (004); A controller signal-connected to the first pressure sensor (005) and the second pressure sensor (009).

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