CN120332660A - Bottle mouth combination valve, hydrogen storage bottle group and vehicle-mounted hydrogen supply system - Google Patents

Abstract

The present invention relates to the technical field of hydrogen storage equipment, and in particular to a bottle mouth combination valve, a hydrogen storage bottle group and an on-board hydrogen supply system. The bottle mouth combination valve includes: a shell, a first valve body and a second valve body; the first valve body is installed on the shell, and the first valve body includes: a gas supply channel, which is connected to the hydrogen storage bottle; the second valve body includes: a pilot valve and a main valve; the pilot valve has a first magnetic part and a second magnetic part inside: the main valve has a main valve that is movably arranged inside, and a pilot hole is formed on the main valve. The first magnetic part and the second magnetic part control the opening and closing of the pilot hole under the action of magnetic force. The present invention integrates the first valve body and the second valve body into the shell, adopts a highly integrated design, and reduces the leakage points of the on-board hydrogen system; the second valve body consists of a pilot valve and a main valve. The opening of the main valve does not rely on the pressure difference between the upstream and downstream of the main valve. The solenoid valve has no minimum working pressure requirement and can be opened at zero air pressure to ensure complete gas supply.

Description

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

Technical Field

The invention relates to the technical field of hydrogen storage equipment, in particular to a bottle opening combined valve, a hydrogen storage bottle group and a vehicle-mounted hydrogen supply system.

Background

The fuel cell can directly convert chemical energy into electric energy, and has the advantages of high energy conversion efficiency, small pollution, wide fuel source, low noise, high reliability, convenient maintenance and the like. The vehicle-mounted hydrogen supply system of the fuel cell is generally composed of a hydrogenation port, a high-pressure gas cylinder, a bottleneck valve, a pressure reducing valve, a safety valve, a relief valve, a pressure sensor, a pipeline joint and other devices. The bottle opening combined valve is a core part of a vehicle-mounted hydrogen supply system and generally has the following functions:

1) Electromagnetic opening/closing control function for high-pressure gas in the gas cylinder;

2) A one-way filling function of the hydrogen storage bottle;

3) An automatic release function in case of fire or high temperature;

4) A manual cut-off function of the high-pressure gas;

5) The overcurrent protection function is achieved;

6) Manual release function in emergency state;

7) The device has the functions of filtering and filling gas and gas impurities in the gas cylinder;

8) And the temperature in the gas cylinder is monitored in real time.

However, the bottle opening combined valve in the related art has the following defects:

1) The product integration level is low, and the leakage point and the leakage risk of the vehicle-mounted hydrogen system are increased;

2) The high-pressure electromagnetic valve needs to be opened by means of pressure difference between the upstream and downstream of the main valve, and usually the minimum working pressure of the electromagnetic valve needs to be more than or equal to 2MPa, but when the minimum working pressure is lower than 2MPa, the high-pressure electromagnetic valve cannot be opened, so that more residual hydrogen exists in the gas cylinder, and the gas supply is incomplete.

Disclosure of Invention

The invention provides a bottle opening combination valve, a hydrogen storage bottle group and a vehicle-mounted hydrogen supply system, which are used for solving the defects that in the prior art, the bottle opening combination valve is low in product integration level, and a high-pressure electromagnetic valve cannot be opened under low pressure difference, so that more residual hydrogen exists in a gas bottle, and the gas supply is incomplete.

The invention provides a bottle opening combined valve, which comprises:

A housing;

a first valve body mounted on the housing, the first valve body comprising:

The gas supply channel is communicated with the hydrogen storage cylinder;

The second valve body is installed on the casing and located the air feed passageway, the second valve body includes:

The pilot valve is internally provided with a first magnetic piece and a second magnetic piece:

The main valve is internally provided with a main valve which is movably arranged, a pilot hole is formed in the main valve, and the first magnetic piece and the second magnetic piece control the opening and closing of the pilot hole under the action of magnetic force.

According to the bottleneck combination valve provided by the invention, the pilot valve further comprises:

the elastic piece is arranged between the first magnetic piece and the second magnetic piece;

and the pilot valve core is arranged at one end of the elastic piece, which is close to the pilot hole, and when the first magnetic piece and the second magnetic piece overcome the elastic force of the elastic piece and the pressure difference at two ends of the pilot hole under the action of magnetic force, the pilot valve core is driven to move so as to open the pilot hole.

According to the bottleneck combination valve provided by the invention, the pilot valve further comprises:

an electromagnetic coil wound on the outer sides of the first magnetic element and the second magnetic element;

When the electromagnetic coil is electrified to generate a magnetic field, the first magnetic piece and the second magnetic piece generate electromagnetic force which attracts each other under the action of the magnetic field so as to overcome the elastic force of the elastic piece and the pressure difference at two ends of the pilot hole, and drive the pilot valve core to move so as to open the pilot hole;

When the electromagnetic coil is powered off, the first magnetic piece and the second magnetic piece drive the pilot valve core to move under the action of the elastic force of the elastic piece so as to enable the pilot hole to be closed.

According to the bottleneck combined valve provided by the invention, the second magnetic piece is arranged between the first magnetic piece and the main valve, and a penetrating assembly hole is formed in the second magnetic piece and is used for accommodating the elastic piece and limiting the pilot valve core;

One end of the elastic piece passes through the assembly hole to be in contact with the first magnetic piece, the other end of the elastic piece is connected with one end of the pilot valve core, and the other end of the pilot valve core can open or close the pilot hole under the drive of the second magnetic piece.

According to the bottle opening combined valve provided by the invention, a wedge-shaped groove structure is formed at one end of the first magnetic piece, which is close to the second magnetic piece, and a wedge-shaped bulge structure is formed at one end of the second magnetic piece, which is close to the first magnetic piece, or a wedge-shaped bulge structure is formed at one end of the first magnetic piece, which is close to the second magnetic piece, and a wedge-shaped groove structure is formed at one end of the second magnetic piece, which is close to the first magnetic piece;

Wherein the wedge-shaped protrusion is adapted to be embedded in the wedge-shaped groove structure.

According to the bottleneck combination valve provided by the invention, the second magnetic piece is arranged between the first magnetic piece and the main valve, and the bottleneck combination valve further comprises:

And the stop block is arranged on the second magnetic part and used for limiting the main valve.

The bottle opening combined valve provided by the invention further comprises:

The electromagnetic valve sleeve is sleeved on the outer sides of the first magnetic piece and the second magnetic piece;

A first seal member provided outside the solenoid valve sleeve;

and the second sealing piece is arranged outside the first magnetic piece.

According to the bottle opening combined valve provided by the invention, the first magnetic piece comprises a stop iron, and the second magnetic piece comprises an armature iron.

The present invention also provides a hydrogen storage bottle set comprising:

the invention relates to a bottleneck combined valve;

The bottle opening combination valve is arranged at the bottle opening of the hydrogen storage bottle.

The invention also provides a vehicle-mounted hydrogen supply system which comprises the bottle opening combination valve or the hydrogen storage bottle group.

The vehicle-mounted hydrogen supply system provided by the invention further comprises:

A hydrogenation port;

The diverter is arranged at the downstream of the hydrogenation port and is communicated with the bottleneck combination valve;

the first pressure sensor is arranged on the shunt;

A pressure reducing valve connected downstream of the flow divider;

a safety valve connected downstream of the flow divider;

a pressure relief valve connected downstream of the flow divider;

a second pressure sensor connected downstream of the flow divider;

And the controller is in signal connection with the first pressure sensor and the second pressure sensor.

The invention provides a bottleneck combination valve which comprises a shell, a first valve body and a second valve body, wherein the first valve body is arranged on the shell and comprises an air supply channel which is communicated with a hydrogen storage bottle, the second valve body is arranged on the shell and is arranged on the air supply channel, the second valve body comprises a pilot valve and a main valve, a first magnetic part and a second magnetic part are arranged in the pilot valve, a main valve which is movably arranged in the main valve is arranged in the main valve, a pilot hole is formed in the main valve, and the first magnetic part and the second magnetic part control the opening and closing of the pilot hole under the action of magnetic force. The first valve body and the second valve body are integrally arranged through the shell, a high-integration design is adopted, so that a plurality of independent valves are avoided, leakage points of a vehicle-mounted hydrogen system are reduced, the second valve body consists of a pilot valve and a main valve, and the main valve is opened without depending on upstream and downstream pressure difference force of the main valve, so that the electromagnetic valve has no minimum working pressure requirement, zero-air-pressure opening can be achieved, excessive hydrogen remained in the gas cylinder is avoided, and complete air supply is ensured.

Further, the invention also provides a vehicle-mounted hydrogen supply system, which has the same advantages as above because the vehicle-mounted hydrogen supply system comprises the bottle opening combined valve in the embodiment of the invention.

Furthermore, the invention also provides a vehicle-mounted hydrogen supply system, which comprises the bottle opening combined valve or the hydrogen storage bottle group in the embodiment of the invention, so that the vehicle-mounted hydrogen supply system has the same advantages as above.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the overall structure of a bottle opening combination valve according to one embodiment of the present invention.

Fig. 2 is a schematic diagram of a finish combination valve provided in one embodiment of the present invention.

Fig. 3 is a schematic view showing an internal structure of a first valve body provided in one embodiment of the present invention.

Fig. 4 is a top view of a first valve body provided in one embodiment of the present invention.

Fig. 5 is a schematic view of the structure of a second valve body provided in one embodiment of the present invention.

Fig. 6 is a schematic structural view of a main shutter provided in one embodiment of the present invention.

Fig. 7 is a schematic view of the internal structure of a manual shut-off valve or a relief valve provided in one embodiment of the present invention.

Fig. 8 is a schematic view of the internal structure of a filling valve provided in one embodiment of the present invention.

Fig. 9 is a schematic view showing the overall structure of a hydrogen storage bottle group according to one embodiment of the present invention.

Fig. 10 is a schematic diagram of an in-vehicle hydrogen supply system provided in one embodiment of the present invention.

Reference numerals:

001, a connector, 002, a TPRD discharge port, 003, a hydrogenation port, 004, a shunt, 005, a first pressure sensor, 006, a pressure reducing valve, 007, a safety valve, 008, a pressure reducing valve, 009, a second pressure sensor, 010, a bottleneck combination valve and 014, a hydrogen storage cylinder;

100 parts of a first valve body, 011 parts of a filling channel, 012 parts of a gas supply channel, 013 parts of a discharge channel, 200 parts of a TPRD module, 300 parts of a second valve body, 400 parts of an overcurrent protection valve, 500 parts of a gas supply valve, 600 parts of a temperature sensor, 700 parts of a manual stop valve, 800 parts of a discharge valve, 900 parts of a filling valve, 1000 parts of a filling filter and 1100 parts of a gas supply filter;

301 electromagnetic valve sleeve, 302 first magnetic piece, 303 second magnetic piece, 304 main valve, 305 stop, 306 pilot valve core, 307 lock nut, 308 elastic piece, 309 electromagnetic coil, 310 second sealing piece, 311 first sealing piece, 312 pilot hole;

701, 704, 705, 708, rotating the valve rod;

902 second shutter, 903 first shutter seat, 904 second shutter seat, 905 gland, 906 elastomer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present embodiment, the meaning of "plurality" is at least two, for example, two, three, etc., unless explicitly defined otherwise.

In this embodiment, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured" and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integral, as being mechanically connected, as being electrically connected, as being directly connected, as being indirectly connected through an intervening medium, as being in communication with one another or as being in interaction with one another, unless otherwise explicitly stated. The specific meaning of the above terms in the present embodiment can be understood by those of ordinary skill in the art according to the specific circumstances.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

A finish assembly valve of the present invention is described below in connection with fig. 1-8. The finish combination valve includes a housing, a first valve body 100, a filling valve 900, a second valve body 300, and a TPRD module 200.

Wherein the first valve body 100 is mounted to the housing and includes a fill passage 011, a supply passage 012, and a drain passage 013.

The filling channel 011 communicates with the hydrogen storage cylinder 014, the gas supply channel 012 communicates with the hydrogen storage cylinder 014, the discharge channel 013 communicates with the hydrogen storage cylinder 014, the filling valve 900 is mounted on the housing and provided to the filling channel 011, and the second valve body 300 is mounted on the housing and provided to the gas supply channel 012, and the TPRD module 200 is mounted on the housing and provided to the discharge channel 013.

A second valve body 300 mounted on the housing and provided in the air supply passage 012, the second valve body including a pilot valve and a main valve. The pilot valve is internally provided with a first magnetic part 302 and a second magnetic part 303, a main valve 304 which is movably arranged is arranged in the main valve, a pilot hole 312 is formed on the main valve 304, and the first magnetic part 302 and the second magnetic part 303 control the opening and closing of the pilot hole 312 under the action of magnetic force.

Specifically, the bottle opening combination valve has a housing for mounting and supporting each part of the structure, and the first valve body 100, the filling valve 900, the second valve body 300, the TPRD module 200, the temperature sensor 600 (the temperature sensor 600 is used for monitoring the temperature change in the gas cylinder in real time) and other structures are integrally mounted through the housing. According to the bottleneck combined valve, all the structures are integrally installed through the shell, the product integration level is high, the functions of unidirectional filling, stopping, overcurrent protection, safety release and the like of hydrogen are realized, leakage points of a hydrogen supply system are reduced, and the safety and reliability are improved.

Specifically, the filling channel 011 is communicated with an inlet and outlet joint at the end of the shell for filling hydrogen into the hydrogen storage bottle 014 for storage, the gas supply channel 012 is also communicated with an inlet and outlet joint at the end of the shell for supplying hydrogen in the hydrogen storage bottle 014 to the fuel cell system for use, and the discharge channel 013 is communicated with a discharge pipeline for discharging gas to ensure that the pressure in the hydrogen storage bottle 014 is in a safe range.

Specifically, the filling valve 900 is disposed at an end of the filling channel 011 near the hydrogen storage cylinder 014, and can adopt a filling check valve, so as to ensure the unidirectional filling of hydrogen and avoid leakage. When the filling of hydrogen gas is required, the filling valve 900 is opened to fill the hydrogen storage cylinder 014 with hydrogen gas, and when the filling is required to be stopped, the filling valve 900 is closed.

Specifically, the TPRD module (English full name: thermal Pressure RELIEF DEVICE; chinese full name: thermal Pressure relief device or simply Pressure relief device) includes a sensing element that is capable of responding to changes in temperature and/or Pressure, and upon reaching a predetermined safety threshold, the element triggers to open a passageway for gas to escape from the tank. The TPRD module 200 is disposed in the discharge channel 013, and is configured to release hydrogen in a high-temperature environment, so as to prevent the high-pressure hydrogen in the hydrogen storage bottle from exploding in a fire.

The second valve body 300 is a high-pressure electromagnetic valve, and is composed of a pilot valve and a main valve. The pilot valve is internally provided with two magnetic pieces, and the first magnetic piece 302 and the second magnetic piece 303 are driven to move by means of an external magnetic field. The main valve is internally provided with a movably arranged main valve 304, a pilot hole 312 is formed in the main valve, and the pilot hole 312 can be opened and closed by moving the first magnetic element 302 and the second magnetic element 303.

The pilot valve is characterized in that the working principle of the pilot valve is based on the basic principle of fluid mechanics. When a small energy input is applied to the pilot valve, it can generate enough force to move the components within the main valve, allowing a larger amount of fluid to pass through the main valve, which enables even very small control signals to accurately manage large amounts of fluid flow. The opening and closing of the pilot valve in the invention is controlled by a magnetic field, and the generation and disappearance of the magnetic field can be controlled by a control signal of the hydrogen storage system ECU.

The invention provides a bottleneck combination valve which comprises a shell, a first valve body and a second valve body, wherein the first valve body is arranged on the shell and comprises an air supply channel which is communicated with a hydrogen storage cylinder, the second valve body is arranged on the shell and is arranged on the air supply channel, the second valve body comprises a pilot valve and a main valve, a first magnetic piece 302 and a second magnetic piece 303 are arranged in the pilot valve, a main valve 304 which is movably arranged in the main valve is arranged in the main valve, a pilot hole 312 is formed in the main valve 304, and the first magnetic piece 302 and the second magnetic piece 303 control the opening and closing of a pilot hole 312 under the action of magnetic force. The first valve body and the second valve body are integrally arranged through the shell, a high-integration design is adopted, so that a plurality of independent valves are avoided, leakage points of a vehicle-mounted hydrogen system are reduced, the second valve body consists of a pilot valve and a main valve, and the main valve is opened without depending on upstream and downstream pressure difference force of the main valve, so that the electromagnetic valve has no minimum working pressure requirement, zero-air-pressure opening can be achieved, excessive hydrogen remained in the gas cylinder is avoided, and complete air supply is ensured.

In one embodiment of the present invention, the pilot valve further includes an elastic member 308 and a pilot spool 306. The guide valve core 306 is disposed at one end of the elastic member 308 near the guide hole 312, and when the elastic force of the elastic member 308 and the pressure difference at two ends of the guide hole 312 are overcome by the first magnetic member 302 and the second magnetic member 303 under the magnetic force, the guide valve core 306 is driven to move so as to open the guide hole 312. Specifically, the elastic member 308 may be a spring, and the spring is connected between the first magnetic member 302 and the second magnetic member 303, and mainly provides an elastic restoring force for the pilot valve core 306, and when an external magnetic field causes an electromagnetic force to be formed between the first magnetic member 302 and the second magnetic member 303, and overcomes the elastic force of the spring and the pressure difference between two ends of the pilot hole 312, the spring moves to drive the pilot valve core 306 to move in the moving process, so as to control the opening and closing of the pilot hole 312. When the magnetic field is removed, the pilot spool 306 moves in the opposite direction due to the elastic restoring force of the elastic member 308, and closes the pilot hole 312.

In one embodiment of the invention, the pilot valve further comprises a solenoid 309, which is wound outside the first magnetic member 302 and the second magnetic member 303. When the electromagnetic coil 309 is powered on, a magnetic field is generated, the first magnetic element 302 and the second magnetic element 303 generate electromagnetic force which attracts each other under the action of the magnetic field so as to overcome the elastic force of the elastic element 308 and the pressure difference at two ends of the pilot hole 312, and drive the pilot valve core 306 to move so as to open the pilot hole 312, and when the electromagnetic coil 309 is powered off, the first magnetic element 302 and the second magnetic element 303 drive the pilot valve core 306 to move under the action of the elastic force of the elastic element 308 so as to close the pilot hole 312.

In the above embodiment, the first magnetic member 302 includes the stopper iron and the second magnetic member 303 includes the armature. In the structure shown in fig. 5, after the electromagnetic coil 309 is energized, the first magnetic member 302 is not moved, and the second magnetic member 303 overcomes the elastic force of the elastic member 308 and the pressure difference across the pilot hole 312 due to the electromagnetic force, and moves upward, so as to drive the pilot valve core 306 to move upward, the pilot valve core 306 opens the pilot hole 312, the gas on the upper side of the main valve 304 is rapidly discharged to the downstream of the main valve through the pilot hole 312, and when the pressure downstream of the main valve and the pressure upstream of the main valve are balanced, the main valve 304 can continue to move upward under the electromagnetic force, the main valve is opened, the gas supply channel is communicated, and the downstream gas supply is performed. The stop iron and the armature are both made of magnetic conductive stainless steel materials.

In one embodiment of the present invention, the second magnetic member 303 is disposed between the first magnetic member 302 and the main valve 304, and a through assembly hole is disposed in the second magnetic member 303, where the assembly hole is used to accommodate the elastic member 308 and limit the pilot valve core 306. One end of the elastic member 308 passes through the assembly hole to contact with the first magnetic member 302, the other end of the elastic member 308 is connected with one end of the pilot valve core 306, and the other end of the pilot valve core 306 can open or close the pilot hole 312 under the driving of the second magnetic member 303. In this embodiment, the first magnetic member 302, the second magnetic member 303 and the main valve 304 are sequentially disposed from top to bottom, where an assembly hole is machined in the second magnetic member 303, the elastic member 308 is inserted into the assembly hole, the upper end of the elastic member is in contact with the first magnetic member 302 above the assembly hole, the lower end of the elastic member is connected with the pilot valve core 306, and the lower surface of the pilot valve core 306 can be flat with the bottom surface of the second magnetic member 303. Specifically, the portion of the assembly hole near the first magnetic element 302 is a cylindrical hole, the portion near the main valve 304 is a trapezoidal hole, the cylindrical hole is used for accommodating the elastic element 308, and the trapezoidal hole is used for limiting the lower limit of the pilot valve core 306, so that the second magnetic element 303 can drive the pilot valve core 306 to move upwards under the action of the trapezoidal hole.

In one embodiment of the present invention, a wedge-shaped groove structure is formed at one end of the first magnetic member 302 adjacent to the second magnetic member 303, a wedge-shaped protrusion structure is formed at one end of the second magnetic member 303 adjacent to the first magnetic member 302, or a wedge-shaped protrusion structure is formed at one end of the first magnetic member 302 adjacent to the second magnetic member 303, and a wedge-shaped groove structure is formed at one end of the second magnetic member 303 adjacent to the first magnetic member 302. Wherein the wedge-shaped protrusions are adapted to be embedded in the wedge-shaped groove structure. Specifically, the first magnetic member 302 and the second magnetic member 303 are engaged with the wedge-shaped protrusions by the wedge-shaped groove structure, and due to the fitting hole structure inside the second magnetic member 303, it is possible to achieve a reduction in the size of the two magnetic members in the radial direction and the length direction, and to reduce the weight and power consumption of the coil in the case of generating the same electromagnetic force. In addition, the two magnetic parts of the wedge-shaped surface are matched to replace the plane attraction surface in the prior art, so that the coil in the embodiment needs smaller ampere-turns under the condition of generating the same electromagnetic force, and the weight and the power consumption of the coil are reduced.

In one embodiment of the invention, the second magnetic member 303 is disposed between the first magnetic member 302 and the main valve 304, and the bottle opening combination valve further comprises a stop 305 disposed on the second magnetic member 303 for limiting the main valve 304. In the structure shown in fig. 5, the stopper 305 serves to limit the lower limit of the main shutter 304,

In one embodiment of the present invention, the finish assembly valve further comprises a solenoid valve sleeve 301, a first seal 311, and a second seal 310. The electromagnetic valve sleeve 301 is sleeved outside the first magnetic piece 302 and the second magnetic piece 303, the first sealing piece 311 is arranged outside the electromagnetic valve sleeve 301, and the second sealing piece 310 is arranged outside the first magnetic piece 302. Specifically, the solenoid valve sleeve 301 is in sealing connection with the housing through the first sealing member 311, and the first magnetic member 302 is in sealing connection with the solenoid valve sleeve 301 through the second sealing member 310, so as to achieve a sealing effect. The upper end of the housing is secured 307 by a lock nut.

In one embodiment of the present invention, as shown in fig. 6, the main valve 304 adopts a spherical self-centering structure, and the material is selected from engineering plastics such as polyetheretherketone or polyimide, so as to meet the sealing requirement of vehicle 70 MPa.

In one embodiment of the invention, the finish assembly valve further comprises a manual shut-off valve 700, a fill filter 1000, and a fitting 001. The manual shut-off valve 700 is provided in the filling passage 011, the filling filter 1000 is provided in the filling passage 011, and the joint 001 is provided at an end of the filling passage 011 remote from the hydrogen storage cylinder 014. Wherein the filling valve 900 is connected with the manual shut-off valve 700, the filling filter 1000 and the joint 001 in sequence through a filling channel 011.

In the above embodiment, the joint 001 can realize the function of an inlet or an outlet under different working conditions, and air is supplied through the joint 001 during filling and the fuel cell system during air supply. The handle of the manual stop valve 700 is arranged on the outer side of the shell, manual operation is facilitated, manual stop of hydrogen filling in the filling channel 011 can be achieved through operation of the manual stop valve 700, and filled hydrogen is filtered through the filling filter 1000, so that filling hydrogen is guaranteed to be clean.

In one embodiment of the present invention, the finish assembly valve further comprises an air supply valve 500, an over-flow protection valve 400, and an air supply filter 1100. The air supply valve 500 is provided in the air supply passage 012, the overcurrent protection valve 400 is provided in the air supply passage 012, and the air supply filter 1100 is provided in the air supply passage 012. The second valve body 300 is connected to the air supply valve 500, the overcurrent protection valve 400, and the air supply filter 1100 in this order through an air supply passage 012.

In the above-described embodiment, the second valve body 300 employs a high-pressure solenoid valve whose opening and closing is controlled by the vehicle-mounted ECU. The air supply valve 500 adopts an air supply check valve, ensuring the unidirectional supply of hydrogen. The overcurrent protection valve 400 consists of an overcurrent valve and an overcurrent valve spring, and when a downstream pipeline of the bottleneck combination valve is broken and the flow is abnormally increased, the overcurrent valve is closed under the action of pressure difference, so that the current limitation is realized, and abnormal discharge is avoided. The supply filter 1100 filters the hydrogen during the supply process, ensuring that the supply hydrogen is clean.

In one embodiment of the present invention, a TPRD drain 002 is formed at a first end of the bleed channel 013, a second end of the bleed channel 013 is connected to the hydrogen storage cylinder 014, and a third end connection of the bleed channel 013 is connected to the fill filter 1000. In this embodiment, when the external ambient temperature reaches the threshold, the TPRD module opens the TPRD vent 002 at one end of the bleed channel 013, and the high-pressure hydrogen is depressurized through the TPRD vent 002. On the other hand, the second end of the bleed channel 013 is communicated with the inside of the hydrogen storage bottle 014, the third end of the bleed channel 013 is connected with the filling filter 1000, and when the internal pressure of the hydrogen storage bottle 014 is too high, high-pressure hydrogen can be discharged from the joint 001 along the filling filter 1000 through the bleed channel. It can be seen that, through the above arrangement, the present embodiment can realize pressure relief in a high temperature environment, and also can release pressure in the hydrogen storage bottle 014 at high pressure, thereby ensuring the safety of hydrogen storage.

In one embodiment of the present invention, the finish assembly valve further comprises a bleed valve 800 disposed in the bleed passage 013 and between the second end of the bleed passage 013 and the fill filter 1000. In the present embodiment, by providing the relief valve 800 between the hydrogen storage cylinder 014 and the connector, when pressure relief is required, the relief valve 800 is opened, and high-pressure hydrogen in the hydrogen storage cylinder 014 is discharged through the connector, thereby realizing pressure relief.

In one embodiment of the present invention, the manual shut-off valve 700 and the relief valve 800 each include a valve cover 701, a valve spool 704, a first trap 705, and a rotary valve stem 708. Specifically, the valve core 704 is movably arranged in the valve cover 701, the first valve 705 is movably arranged in the valve cover 701, and the rotary valve rod 708 is movably arranged on the valve cover 701 and is connected with the valve core 704 and the first valve 705. In this embodiment, the manual shut-off valve 700 and the relief valve 800 are of the same construction, wherein the rotary valve stem 708 is mounted on the outside of the housing for manual operation. The valve spool 704 is implemented by operating the rotary valve stem 708 to open or close the valve body.

In addition, the manual stop valve 700 and the relief valve 800 are both in unloading structures, the torque for opening and closing is small, the service life is long, the valve core 704 is in a ball head structure and has self-adaption, the first valve 705 is made of PEEK or PI materials, the first valve 705 and the valve body are in soft and hard sealing, and good sealing performance can be achieved under small screwing torque. The manual shut-off valve 700 and the relief valve 800 are also configured with a friction ring, a seal ring, a retainer ring, and the like.

In one embodiment of the present invention, the filling valve 900 includes a body, a second valve 902, a primary valve seat 903, and a secondary valve seat 904. The second shutter 902 is movably disposed inside the body, the first shutter seat 903 is fixed inside the body, and the second shutter seat 904 is fixed inside the body. Wherein the second shutter 902 is in sealing contact with the first-stage shutter seat 903 when the hydrogen pressure in the filling valve 900 is less than a preset pressure threshold value, and the second shutter 902 is in sealing contact with the second-stage shutter seat 904 when the hydrogen pressure in the filling valve 900 is equal to or greater than the preset pressure threshold value.

In the above embodiment, a two-stage sealing structure is adopted, that is, when the filling valve 900 is subjected to hydrogen pressure, the second valve 902 contacts with the first-stage valve seat 903 to realize sealing under the working condition of lower than 2MPa, and when the second valve 902 contacts with the second-stage valve seat 904 to realize sealing under the working condition of higher than 2MPa, thereby ensuring that the filling check valve realizes reliable one-way sealing within the pressure range of 0.5-70 MPa.

In one embodiment of the present invention, the filling valve 900 further includes a gland 905 and an elastomer 906. Specifically, the pressing cover 905 is fixed inside the body, and presses and fixes the primary shutter base 903 and the secondary shutter base 904 inside the body, and the elastic body 906 has one end connected inside the body and the other end connected with the second shutter 902. Specifically, the filling valve 900 compresses the primary valve seat 903 and the secondary valve seat 904 through the gland 905, so that the two valve seats are fixed inside the body, and the two valve seats have supporting and fixing functions. The elastic force provided by the elastic body 906 acts as a shutter closing force to achieve a check action of the filling valve.

In one embodiment of the present invention, both the fill filter 1000 and the supply filter 1100 described above are of a replaceable cartridge design. The filter core adopts a three-layer stainless steel sintered filter screen and is supported by a porous stainless steel bracket, so that the pressure impact resistance of the filter core is improved, and meanwhile, the filter core and the bracket are designed in a split manner, so that the filter core is convenient to replace and maintain.

According to the finish combination valve of the above embodiment, the second valve body 300 is operated as follows:

The opening process comprises the following steps:

a. the pilot valve is opened, namely, the electromagnetic coil 309 generates a magnetic field after being electrified, the stop iron and the armature in the magnetic field generate electromagnetic force which attracts each other under the action of the magnetic field, and the armature overcomes the pressure difference force at two ends of the pilot hole 312 and the action of the spring to drive the pilot valve core 306 to move upwards together under the action of the electromagnetic force, so that the pilot valve is opened.

B. After the pilot valve is opened, the gas on the upper side of the main valve 304 is rapidly discharged to the downstream of the main valve through the pilot hole 312, and when the pressure of the downstream of the main valve is balanced with the pressure of the upstream of the main valve, the main valve 304 continues to move upwards under the action of electromagnetic force, and the main valve is opened.

Closing:

When the hydrogen storage system ECU sends a closing instruction of the electromagnetic valve, the magnetic field in the electromagnetic coil 309 disappears, the electromagnetic force born by the armature disappears, the armature moves downwards under the action of the spring, the pilot valve is closed, the main valve is contacted with the valve seat, and sealing is realized under the action of pressure difference force and spring force.

As shown in fig. 9, the present invention also provides a hydrogen storage bottle group. The hydrogen storage bottle group includes the bottle mouth combination valve 010 and the hydrogen storage bottle 014 in the above-described embodiment of the present invention.

Specifically, the bottleneck combination valve 010 is arranged at the bottleneck of the hydrogen storage bottle 014 and is used for realizing the functions of filling, supplying and releasing hydrogen.

As shown in fig. 10, the present invention also provides a vehicle-mounted hydrogen supply system, which has the same advantages as above because it includes the bottle opening combination valve in the above embodiment of the present invention.

The invention also provides a vehicle-mounted hydrogen supply system. The vehicle-mounted hydrogen supply system comprises a bottle opening combination valve 010 in the embodiment of the invention or a hydrogen storage bottle group in the embodiment of the invention.

The invention also provides a vehicle-mounted hydrogen supply system, which comprises the bottle opening combined valve or the hydrogen storage bottle group in the embodiment of the invention, so that the vehicle-mounted hydrogen supply system has the same advantages as above.

In one embodiment of the invention, the on-board hydrogen supply system further comprises a hydrogenation port 003, a flow divider 004, a first pressure sensor 005, a pressure reducing valve 006, a relief valve 007, a pressure reducing valve 008, a second pressure sensor 009, and a controller. The flow divider 004 is arranged at the downstream of the hydrogenation port 003 and is communicated with the bottleneck combination valve 010, the first pressure sensor 005 is arranged at the flow divider 004, the pressure reducing valve 006 is connected at the downstream of the flow divider 004, the safety valve 007 is connected at the downstream of the flow divider 004, the pressure reducing valve 008 is connected at the downstream of the flow divider 004, the second pressure sensor 009 is connected at the downstream of the flow divider 004, and the controller is in signal connection with the first pressure sensor 005 and the second pressure sensor 009.

In the above embodiment, the pressure reducing valve 006, the relief valve 007 and the pressure releasing valve 008 are sequentially connected to the branch downstream of the flow divider 004, and the hydrogenation port 003 can provide hydrogen filling for the plurality of bottleneck combination valves 010 through the flow divider 004, the first pressure sensor 005 is a high pressure sensor, the second pressure sensor 009 is a low pressure sensor, and the pressure releasing valve 008 is a low pressure releasing valve.

It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.

Claims (11)

1. A finish assembly valve, comprising:

A housing;

A first valve body (100) mounted on the housing, the first valve body (100) comprising:

a gas supply passage (012) which communicates with the hydrogen storage cylinder (014);

A second valve body (300) mounted on the housing and provided to the air supply passage (012), the second valve body including:

A pilot valve having a first magnetic member (302) and a second magnetic member (303) inside:

The main valve is internally provided with a main valve (304) which is movably arranged, a pilot hole (312) is formed on the main valve (304), and the first magnetic piece (302) and the second magnetic piece (303) control the opening and closing of the pilot hole (312) under the action of magnetic force.

2. The finish combination valve of claim 1, wherein the pilot valve further comprises:

an elastic member (308) provided between the first magnetic member (302) and the second magnetic member (303);

And the pilot valve core (306) is arranged at one end of the elastic piece (308) close to the pilot hole (312), and when the first magnetic piece (302) and the second magnetic piece (303) overcome the elastic force of the elastic piece (308) and the pressure difference at two ends of the pilot hole (312) under the action of magnetic force, the pilot valve core (306) is driven to move so as to open the pilot hole (312).

3. The finish combination valve of claim 2, wherein the pilot valve further comprises:

An electromagnetic coil (309) wound around the first magnetic member (302) and the second magnetic member (303);

When the electromagnetic coil (309) is electrified to generate a magnetic field, the first magnetic piece (302) and the second magnetic piece (303) generate electromagnetic force which attracts each other under the action of the magnetic field so as to overcome the elastic force of the elastic piece (308) and the pressure difference at two ends of the pilot hole (312) and drive the pilot valve core (306) to move so as to open the pilot hole (312);

when the electromagnetic coil (309) is powered off, the first magnetic element (302) and the second magnetic element (303) drive the pilot valve core (306) to move under the action of the elastic force of the elastic element (308), so that the pilot hole (312) is closed.

4. The bottle opening combined valve according to claim 2, wherein the second magnetic member (303) is arranged between the first magnetic member (302) and the main valve (304), and a through assembly hole is arranged in the second magnetic member (303), and the assembly hole is used for accommodating the elastic member (308) and limiting the pilot valve core (306);

one end of the elastic piece (308) passes through the assembly hole to be in contact with the first magnetic piece (302), the other end of the elastic piece (308) is connected with one end of the pilot valve core (306), and the other end of the pilot valve core (306) can be driven by the second magnetic piece (303) to open or close the pilot hole (312).

5. The bottle opening combination valve according to claim 1, wherein a wedge-shaped groove structure is formed at one end of the first magnetic member (302) close to the second magnetic member (303), a wedge-shaped bulge structure is formed at one end of the second magnetic member (303) close to the first magnetic member (302), or a wedge-shaped bulge structure is formed at one end of the first magnetic member (302) close to the second magnetic member (303), and a wedge-shaped groove structure is formed at one end of the second magnetic member (303) close to the first magnetic member (302);

Wherein the wedge-shaped protrusion is adapted to be embedded in the wedge-shaped groove structure.

6. The finish assembly valve according to claim 1, wherein the second magnetic member (303) is disposed between the first magnetic member (302) and the main shutter (304), the finish assembly valve further comprising:

And the stop block (305) is arranged on the second magnetic piece (303) and used for limiting the main valve (304).

7. The finish assembly valve of claim 1, further comprising:

A solenoid valve sleeve (301) sleeved outside the first magnetic piece (302) and the second magnetic piece (303);

a first seal (311) provided outside the solenoid valve sleeve (301);

and a second seal (310) provided outside the first magnetic member (302).

8. The finish assembly valve according to any one of claims 1 to 7, wherein,

The first magnetic member (302) includes:

A stop iron;

The second magnetic member (303) includes:

An armature.

9. A hydrogen storage bottle set, comprising:

the finish combination valve (010) of any of claims 1-8;

and the bottle opening combination valve (010) is arranged at the bottle opening of the hydrogen storage bottle (014).

10. A vehicle-mounted hydrogen supply system, characterized by comprising the bottle opening combination valve (010) according to any one of claims 1 to 8, or the hydrogen storage bottle group according to claim 9.

11. The on-board hydrogen supply system according to claim 10, further comprising:

A hydrogenation port (003);

A diverter (004) which is arranged at the downstream of the hydrogenation port (003) and is communicated with the bottleneck combination valve (010);

a first pressure sensor (005) provided to the shunt (004);

a pressure reducing valve (006) connected downstream of the flow divider (004);

A relief valve (007) connected downstream of the flow divider (004);

A pressure relief valve (008) connected downstream of the flow divider (004);

a second pressure sensor (009) connected downstream of the flow divider (004);

And the controller is in signal connection with the first pressure sensor (005) and the second pressure sensor (009).