Hydrogen supply panel structure, hydrogen supply system and vehicle
By introducing nitrogen units and pressure sensors into the on-board hydrogen supply system, nitrogen pressure holding and gas replacement are achieved, the problem of residual safety hazards in hydrogen pipelines is solved, and the system's safety and automated management efficiency are improved.
Patent Information
- Application Number
- CN202420740720.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-10
AI Technical Summary
In the existing on-board hydrogen supply system, there are safety hazards left in the hydrogen pipeline after parking, and it is difficult to effectively reduce the hydrogen concentration, affecting the safety of the system.
A hydrogen supply panel structure is designed, including a hydrogen inlet unit and a nitrogen inlet unit. Through nitrogen pressure holding and gas replacement technology, the hydrogen concentration in the hydrogen pipeline is reduced, and the pipeline is realized through automatic control of pressure sensors and solenoid valves. security monitoring and automated management.
It improves the safety of the hydrogen supply system, reduces the hydrogen concentration in the hydrogen pipeline to the safe range, ensures the safe and reliable operation of the system, and reduces the time for troubleshooting and leakage detection through automated control and gas monitoring.
Smart Images
Figure CN222233679U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of hydrogen supply technology, and in particular to a hydrogen supply panel structure, a hydrogen supply system and a vehicle. Background Art
[0002] The on-board hydrogen supply system provides hydrogen for fuel cell vehicles, thus ensuring the safe, reliable and stable operation of fuel cell vehicles. The on-board hydrogen supply system is an important part of fuel cell vehicles, so fuel cell vehicles have many requirements for the on-board hydrogen supply system. Hydrogen is both a fuel and a hazardous chemical. It has flammable and explosive physical and chemical properties, and there are safety hazards.
[0003] At present, most on-board hydrogen supply systems use high-pressure gas cylinders to supply hydrogen, and the compressed hydrogen is stored in the hydrogen cylinder. The compressed hydrogen in the hydrogen cylinder is transported to the fuel cell engine after multi-stage decompression. In the process of transporting the hydrogen in the hydrogen storage tank to the fuel cell engine, multiple valves, filters, controllers and other modules cooperate with each other. Multiple modules are generally installed on the hydrogen supply matrix, with a high degree of integration. For example, the patent with publication number CN213322703U discloses a hydrogen supply panel structure for a standardized on-board hydrogen supply system. This solution only has a hydrogen supply pipeline. After the vehicle is parked after the hydrogen supply is completed, hydrogen remains in the hydrogen supply pipeline, which poses certain safety risks. Utility Model Content
[0004] The embodiments of the present application provide a hydrogen supply panel structure, a hydrogen supply system and a vehicle, which can maintain pipeline pressure and replace pipeline gas, thereby improving the safety of the hydrogen supply system.
[0005] In a first aspect, an embodiment of the present application provides a hydrogen supply panel structure, which includes a substrate, a hydrogen inlet unit and a nitrogen inlet unit; the hydrogen inlet unit is arranged on the substrate, and the hydrogen inlet unit includes a one-way valve, a pressure reducing valve, a filter and a manual valve connected in sequence, the air inlet of the one-way valve is used to connect to the hydrogen source, and the air outlet of the manual valve is used to connect to the air inlet of the fuel cell engine; the nitrogen inlet unit is arranged on the substrate, and the nitrogen inlet unit includes a nitrogen inlet solenoid valve and a nitrogen exhaust solenoid valve, the air inlet of the nitrogen inlet solenoid valve is used to connect to the nitrogen source, and the air outlet of the nitrogen inlet solenoid valve is connected to between the one-way valve and the pressure reducing valve; the air inlet of the nitrogen exhaust solenoid valve is connected to between the pressure reducing valve and the filter, and the air outlet of the nitrogen exhaust solenoid valve is used for exhaust.
[0006] In this solution, the base provides the function of installing the substrate for both the hydrogen inlet unit and the nitrogen inlet unit, making the hydrogen supply panel structure an integral module. For the hydrogen inlet unit, hydrogen enters from the air inlet of the one-way valve, passes through the one-way valve, pressure reducing valve, filter and hand valve in sequence, and reaches the fuel cell engine to complete the hydrogen supply. Through the setting of the nitrogen inlet unit, the nitrogen inlet solenoid valve is opened to provide nitrogen to the hydrogen inlet unit, and the nitrogen exhaust solenoid valve is opened to exhaust the gas, thereby achieving the pressure maintenance of the pipeline in the hydrogen inlet unit and the gas replacement of the pipeline, thereby improving the safety of the hydrogen supply panel structure.
[0007] Specifically, during the pressure maintaining work, that is, testing the sealing of the hydrogen inlet pipeline, both ends of the pipeline of the hydrogen inlet unit are closed, and the nitrogen inlet solenoid valve is opened. Nitrogen enters the pipeline of the hydrogen inlet unit from the air inlet of the nitrogen inlet solenoid valve. After the pipeline pressure is equal to the nitrogen inlet pressure, the nitrogen inlet solenoid valve is then closed. After the pressure maintaining work is completed, the nitrogen exhaust solenoid valve is opened, and then nitrogen is discharged from the air outlet of the nitrogen exhaust solenoid valve.
[0008] When the fuel cell engine is in a shutdown state, the pipeline can be replaced to reduce the concentration of hydrogen in the hydrogen inlet pipeline to a safe range to ensure the safety of the hydrogen supply system. During the replacement work, both ends of the pipeline of the hydrogen inlet unit are closed, and the above pressure maintenance work can be repeated several times to reduce the hydrogen concentration in the pipeline to a safe range. It should be noted that the interval between the switching time of the opening and closing states of the nitrogen inlet solenoid valve and the nitrogen exhaust solenoid valve can be reduced to 1s.
[0009] Of course, if hydrogen replacement or hydrogen pressure maintenance is required, the front end hydrogen is supplied normally, the nitrogen inlet solenoid valve is not controlled and is in a normally closed state, and only the opening and closing of the nitrogen exhaust solenoid valve is controlled to control the gas in the pipeline.
[0010] In some embodiments, the hydrogen inlet unit further includes a unloading valve, the air inlet of the unloading valve is connected between the pressure reducing valve and the nitrogen exhaust solenoid valve, and the air outlet of the unloading valve is connected to the air outlet of the nitrogen exhaust solenoid valve.
[0011] In the above technical solution, by providing an unloading valve, the unloading valve can automatically exhaust when the pipeline pressure in the hydrogen supply unit exceeds a set threshold, thereby maintaining the pipeline pressure within a normal range and ensuring normal hydrogen supply to the pipeline.
[0012] In some embodiments, the hydrogen inlet unit also includes a high-pressure pressure sensor and a low-pressure pressure sensor. The high-pressure pressure sensor is arranged between the air outlet of the one-way valve and the air inlet of the pressure reducing valve; the low-pressure pressure sensor is arranged between the air outlet of the filter and the hand valve.
[0013] In the above technical solution, the high-pressure pressure sensor is arranged between the air outlet of the one-way valve and the air inlet of the pressure reducing valve, and can monitor the air pressure of the hydrogen intake in real time. When the air pressure of the intake is too high, the nitrogen exhaust solenoid valve is controlled to open to reduce the hydrogen intake pressure. Similarly, the low-pressure pressure sensor is arranged between the air outlet of the filter and the hand valve, and can monitor the pressure of the hydrogen after the pressure reduction by the pressure reducing valve in real time to ensure that the pressure of the hydrogen entering the fuel cell engine meets the requirements. Of course, the presence of the high-pressure pressure sensor and the low-pressure pressure sensor can detect abnormal pressure in the pipeline system to check for faults or gas leaks caused by some components outside the frame.
[0014] It can be understood that during the entire working process, the solenoid valve control can be performed through pressure monitoring of the pressure sensors (high-pressure pressure sensor and low-pressure pressure sensor) to achieve workflow automation.
[0015] In some embodiments, the base includes a box body and a cover body, the box body has a containing cavity, the hydrogen inlet unit and the nitrogen inlet unit are arranged in the containing cavity, and the cover body is arranged to cover the containing cavity.
[0016] In the above technical solution, the base body adopts a box body structure. Compared with the conventional base body which is a single plate body structure, the accommodating cavity inside the box body can be used for arranging the hydrogen inlet unit and the nitrogen inlet unit, and the cover body is provided on the box body, so that the hydrogen inlet unit and the nitrogen inlet unit are in a relatively closed environment, which has the effect of preventing rain and dust for the hydrogen supply panel structure.
[0017] In some embodiments, at least one side of the box body is provided with a ventilation hole communicating with the outside.
[0018] In the above technical solution, by providing a vent on one side of the box body, even if hydrogen leakage occurs in the pipeline, gas exchange between the inside and outside of the box body can be achieved through the vent, slowing down the rate of increase of hydrogen concentration inside the box body, thereby improving the safety of the hydrogen supply panel structure.
[0019] In some embodiments, the pipelines of the hydrogen inlet unit and the nitrogen inlet unit are fixed to the box body through connectors.
[0020] In some embodiments, the hydrogen supply panel structure further includes a hydrogen concentration sensor disposed in the box body, and the hydrogen concentration sensor is used to monitor the hydrogen concentration inside the box body.
[0021] In the above technical solution, a hydrogen concentration sensor is provided in the box body, and the hydrogen concentration sensor monitors hydrogen leakage, thereby improving the safety of hydrogen use.
[0022] In some embodiments, the hydrogen supply panel structure further includes a controller, and both the hydrogen supply unit and the nitrogen supply unit are electrically connected to the controller.
[0023] In the above technical solution, the automatic opening and closing of the electromagnetic valve of the hydrogen inlet unit, as well as the opening and closing of the nitrogen inlet solenoid valve and the nitrogen exhaust solenoid valve in the nitrogen inlet unit can be controlled by the controller, so as to realize automatic hydrogen supply, pipeline pressure maintenance and pipeline replacement according to demand.
[0024] In a second aspect, an embodiment of the present application further provides a hydrogen supply system, which includes a hydrogen cylinder and the aforementioned hydrogen supply panel structure, wherein the gas outlet of the hydrogen cylinder is connected to the gas inlet of the one-way valve.
[0025] In the above technical solution, high-pressure hydrogen is stored in the hydrogen cylinder, and the hydrogen cylinder is connected to the air inlet of the one-way valve to realize hydrogen supply to the hydrogen supply panel structure.
[0026] In a third aspect, an embodiment of the present application further provides a vehicle, the vehicle comprising a fuel cell engine and the aforementioned hydrogen supply system.
[0027] In the above technical solution, the hydrogen supply system is connected to the fuel cell engine to provide a hydrogen source to the fuel cell engine, thereby ensuring the safe, reliable and stable operation of the fuel cell vehicle.
[0028] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0030] Figure 1 A schematic diagram of a hydrogen supply panel structure provided for some embodiments of the present application;
[0031] Figure 2 for Figure 1 A front view of the central hydrogen supply panel structure after the cover is opened;
[0032] Figure 3 A schematic diagram of the control architecture of the hydrogen supply panel structure provided in some embodiments of the present application.
[0033] Icons: 10-base; 11-box body; 12-cover body; 13-vent; 20-hydrogen inlet unit; 21-check valve; 22-pressure reducing valve; 23-filter; 24-hand valve; 25-high pressure sensor; 26-low pressure sensor; 27-unloading valve; 30-nitrogen inlet unit; 31-nitrogen inlet solenoid valve; 32-nitrogen exhaust solenoid valve; 40-connecting parts; 100-hydrogen supply panel structure. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0037] In the description of the embodiments of the present application, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.
[0038] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0039] Example
[0040] The present application embodiment provides a hydrogen supply panel structure, see Figure 1 and Figure 2The hydrogen supply panel structure 100 includes a substrate 10, a hydrogen inlet unit 20 and a nitrogen inlet unit 30; the hydrogen inlet unit 20 is arranged on the substrate 10, and the hydrogen inlet unit 20 includes a one-way valve 21, a pressure reducing valve 22, a filter 23 and a manual valve 24, and the air inlet of the one-way valve 21 is used to connect to a hydrogen source (not shown in the figure); the air outlet of the manual valve 24 is used to supply hydrogen to a fuel cell engine (not shown in the figure); the nitrogen inlet unit 30 is arranged on the substrate 10, and the nitrogen inlet unit 30 includes a nitrogen inlet solenoid valve 31 and a nitrogen exhaust solenoid valve 32, the air inlet of the nitrogen inlet solenoid valve 31 is used to connect to a nitrogen source, and the air outlet of the nitrogen inlet solenoid valve 31 is connected to between the one-way valve 21 and the pressure reducing valve 22; the air inlet of the nitrogen exhaust solenoid valve 32 is connected to between the pressure reducing valve 22 and the filter 23, and the air outlet of the nitrogen exhaust solenoid valve 32 is used for exhaust.
[0041] In this embodiment, the base 10 provides a mounting base for both the hydrogen supply unit 20 and the nitrogen supply unit 30, so that the hydrogen supply panel structure 100 becomes an integral module. Figure 2 The arrow in the figure indicates the flow direction of the gas flow. Hydrogen enters from the air inlet of the one-way valve 21, passes through the one-way valve 21, the pressure reducing valve 22, the filter 23 and the hand valve 24 in sequence, and reaches the fuel cell engine to complete the hydrogen supply. By setting the nitrogen supply unit 30, nitrogen is provided to the hydrogen supply unit 20, so that the pressure of the pipeline in the hydrogen supply unit 20 and the gas replacement of the pipeline can be achieved, thereby improving the safety of the hydrogen supply panel structure 100.
[0042] For details, please refer to Figure 3 , during the pressure maintenance work, that is, the sealing of the pipeline of the hydrogen inlet unit 20 is tested, both ends of the pipeline of the hydrogen inlet unit 20 are closed, and the nitrogen inlet solenoid valve 31 is opened. Nitrogen enters the pipeline of the hydrogen inlet unit 20 from the air inlet of the nitrogen inlet solenoid valve 31. After the pipeline pressure is equal to the nitrogen inlet pressure, the nitrogen inlet solenoid valve 31 is then closed. After the pressure maintenance work is completed, the nitrogen exhaust solenoid valve 32 is opened, and then nitrogen is discharged from the outlet of the nitrogen exhaust solenoid valve 32. When the fuel cell engine is in a shutdown state, the pipeline replacement work can be carried out to reduce the concentration of hydrogen in the hydrogen inlet pipeline to a safe range to ensure the safety of the hydrogen supply system. During the replacement work, both ends of the pipeline of the hydrogen inlet unit 20 are closed, and the above-mentioned pressure maintenance work can be repeated several times to reduce the hydrogen concentration in the pipeline to a safe range. It should be noted that the interval between the switching time of the opening and closing states of the nitrogen inlet solenoid valve 31 and the nitrogen exhaust solenoid valve 32 can be reduced to 1s.
[0043] Of course, if hydrogen replacement or hydrogen pressure maintenance is required, the front end hydrogen is supplied normally, the nitrogen inlet solenoid valve 31 is not controlled and is in a normally closed state, and only the opening and closing of the nitrogen exhaust solenoid valve 32 is controlled to control the gas in the pipeline.
[0044] In some embodiments, the hydrogen inlet unit 20 further includes a relief valve 27, the air inlet of the relief valve 27 is connected between the pressure reducing valve 22 and the nitrogen exhaust solenoid valve 32, and the air outlet of the relief valve 27 is connected to the air outlet of the nitrogen exhaust solenoid valve 32. By providing the relief valve 27, the relief valve 27 can automatically exhaust air when the pipeline pressure in the hydrogen supply unit exceeds a set threshold value, maintain the pressure of the pipeline within a normal range, and ensure normal hydrogen supply of the pipeline.
[0045] In some embodiments, the hydrogen inlet unit 20 further includes a high-pressure pressure sensor 25 and a low-pressure pressure sensor 26. The high-pressure pressure sensor 25 is arranged between the gas outlet of the one-way valve 21 and the gas inlet of the pressure reducing valve 22; the low-pressure pressure sensor 26 is arranged between the gas outlet of the filter 23 and the hand valve 24. The high-pressure pressure sensor 25 is arranged between the gas outlet of the one-way valve 21 and the gas inlet of the pressure reducing valve 22, and can monitor the gas pressure of the hydrogen intake in real time. When the gas pressure of the intake is too high, the nitrogen exhaust solenoid valve 32 is controlled to open to reduce the hydrogen intake pressure. Similarly, the low-pressure pressure sensor 26 is arranged between the gas outlet of the filter 23 and the hand valve 24, and can monitor the pressure of the hydrogen after the pressure reduction by the pressure reducing valve 22 in real time to ensure that the pressure of the hydrogen entering the fuel cell engine meets the requirements. Of course, the presence of the high-pressure pressure sensor 25 and the low-pressure pressure sensor 26 can detect the abnormal pressure of the pipeline system to check for faults or gas leaks caused by some components outside the frame.
[0046] It can be understood that during the entire working process, the solenoid valve can be controlled by pressure monitoring of the pressure sensors (high-pressure pressure sensor 25 and low-pressure pressure sensor 26) to achieve workflow automation.
[0047] In some embodiments, the base 10 includes a box body 11 and a cover body 12, the box body 11 has a receiving cavity, the hydrogen inlet unit 20 and the nitrogen inlet unit 30 are arranged in the receiving cavity, and the cover body 12 is covered in the receiving cavity. The base 10 is adopted as a box body structure, compared with the conventional base body with a single plate structure, the receiving cavity inside the box body 11 can be used for the arrangement of the hydrogen inlet unit 20 and the nitrogen inlet unit 30, and the cover body 12 is covered on the box body 11, so that the hydrogen inlet unit 20 and the nitrogen inlet unit 30 are in a relatively closed environment, which has the effect of preventing rain and dust on the hydrogen supply panel structure 100.
[0048] In some embodiments, at least one side of the box body 11 is provided with a vent 13 connected to the outside. By providing the vent 13 on at least one side of the box body 11, even if hydrogen leakage occurs in the pipeline, gas exchange between the inside and outside of the box body 11 can be achieved through the vent 13, slowing down the rate of increase of hydrogen concentration inside the box body 11, thereby improving the safety of the hydrogen supply panel structure 100.
[0049] Exemplarily, ventilation holes 13 are provided on opposite sides of the box body 11 .
[0050] In some embodiments, the pipelines of the hydrogen inlet unit 20 and the nitrogen inlet unit 30 are both fixed to the box body 11 through the connector 40 .
[0051] The connector 40 may be a conventional pipe buckle structure in the prior art.
[0052] In some embodiments, the hydrogen supply panel structure 100 further includes a hydrogen concentration sensor disposed in the box body 11, and the hydrogen concentration sensor is used to monitor the hydrogen concentration inside the box body 11. By disposing the hydrogen concentration sensor in the box body 11, the hydrogen concentration sensor monitors hydrogen leakage and improves the safety of hydrogen use.
[0053] In some embodiments, the hydrogen supply panel structure 100 further includes a controller (not shown in the figure), and the hydrogen inlet unit 20 and the nitrogen inlet unit 30 are both electrically connected to the controller. The controller can control the automatic opening and closing of the electromagnetic valve of the hydrogen inlet unit 20, as well as the opening and closing of the nitrogen inlet electromagnetic valve 31 and the nitrogen exhaust electromagnetic valve 32 in the nitrogen inlet unit 30, so as to realize automatic hydrogen supply, pipeline pressure maintenance and pipeline replacement according to demand.
[0054] In some embodiments, the hydrogen supply panel structure 100 further includes an alarm (not shown in the figure), and the alarm and the hydrogen concentration sensor are both electrically connected to the controller. When the hydrogen concentration sensor detects that the hydrogen concentration in the box body 11 reaches a threshold value, the controller controls the alarm to issue a warning message after receiving the signal.
[0055] The embodiment of the present application also provides a hydrogen supply system, which includes a hydrogen cylinder (not shown in the figure) and a hydrogen supply panel structure 100, and the gas outlet of the hydrogen cylinder is connected to the gas inlet of the one-way valve 21. High-pressure hydrogen is stored in the hydrogen cylinder, and the hydrogen cylinder is connected to the gas inlet of the one-way valve 21 to realize hydrogen supply to the hydrogen supply panel structure 100.
[0056] The embodiment of the present application also provides a vehicle, where the vehicle may be a car, but is not limited thereto, and may also be a truck or a bus, etc. The vehicle includes a fuel cell engine and a hydrogen supply system. The hydrogen supply system is connected to the fuel cell engine to provide a hydrogen source to the fuel cell engine, thereby ensuring the safe, reliable and stable operation of the fuel cell vehicle.
[0057] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.
[0058] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A hydrogen supply panel structure, characterized in that: include: matrix; A hydrogen inlet unit is arranged on the substrate, and comprises a one-way valve, a pressure reducing valve, a filter and a hand valve which are connected in sequence, wherein the air inlet of the one-way valve is used to connect to a hydrogen source, and the air outlet of the hand valve is used to connect to the air inlet of a fuel cell engine; A nitrogen inlet unit is arranged on the base, and the nitrogen inlet unit includes a nitrogen inlet solenoid valve and a nitrogen exhaust solenoid valve. The air inlet of the nitrogen inlet solenoid valve is used to connect to the nitrogen source, and the air outlet of the nitrogen inlet solenoid valve is connected to between the one-way valve and the pressure reducing valve; the air inlet of the nitrogen exhaust solenoid valve is connected to between the pressure reducing valve and the filter, and the air outlet of the nitrogen exhaust solenoid valve is used for exhausting.
2. The hydrogen supply panel structure according to claim 1, characterized in that: The hydrogen inlet unit further includes a relief valve, an air inlet of the relief valve is connected between the pressure reducing valve and the nitrogen exhaust solenoid valve, and an air outlet of the relief valve is connected to an air outlet of the nitrogen exhaust solenoid valve.
3. The hydrogen supply panel structure according to claim 1, characterized in that: The hydrogen feeding unit further comprises: A high-pressure pressure sensor is arranged between the air outlet of the one-way valve and the air inlet of the pressure reducing valve; The low pressure sensor is arranged between the air outlet of the filter and the hand valve.
4. The hydrogen supply panel structure according to claim 1, characterized in that: The base body comprises a box body and a cover body, the box body has a containing cavity, the hydrogen inlet unit and the nitrogen inlet unit are arranged in the containing cavity, and the cover body is covered on the box body to close the containing cavity.
5. The hydrogen supply panel structure according to claim 4, characterized in that: At least one side of the box body is provided with a ventilating opening communicating with the outside.
6. The hydrogen supply panel structure according to claim 4, characterized in that: The pipelines of the hydrogen inlet unit and the nitrogen inlet unit are both fixed to the box body through connectors.
7. The hydrogen supply panel structure according to claim 4, characterized in that: The hydrogen supply panel structure also includes: A hydrogen concentration sensor is arranged in the box body, and the hydrogen concentration sensor is used to monitor the hydrogen concentration inside the box body.
8. The hydrogen supply panel structure according to claim 1, characterized in that: The hydrogen supply panel structure also includes: A controller, wherein the hydrogen inlet unit and the nitrogen inlet unit are both electrically connected to the controller.
9. A hydrogen supply system, characterized in that: It comprises a hydrogen cylinder and a hydrogen supply panel structure as claimed in any one of claims 1 to 8, wherein the gas outlet of the hydrogen cylinder is connected to the gas inlet of the one-way valve.
10. A vehicle, characterized in that: It comprises a fuel cell engine and the hydrogen supply system as claimed in claim 9.