An integrated fuel cell hydrogen supply control panel system

Abstract

The present invention provides an integrated fuel cell hydrogen supply control panel system, including a panel, a hydrogen filling port, a pressure gauge, a stop valve, and a high and low pressure exhaust valve are fixed on the panel, a pressure regulating valve is fixed on the back of the panel, a filter is connected to the air inlet end of the pressure regulating valve, and the filter is connected to the stop valve; a pipeline connected to a normally closed solenoid valve is provided at the air outlet end of the pressure regulating valve; the hydrogen filling port and the pressure gauge are connected by a three-way joint, and the three-way joint is connected to the four-way joint between the filter and the stop valve; one port of the high and low pressure exhaust valve is connected to the four-way joint between the filter and the stop valve, and the other port is connected to the pipeline between the pressure regulating valve and the solenoid valve. The present invention has the advantages of high integration, simple pipeline connection, high reliability, easy layout and maintenance, and low cost. It is suitable for a variety of different models, meets the needs of fuel cell engines, provides safety measures such as overpressure protection, pressure detection, high and low pressure discharge for the whole vehicle hydrogen supply system, and improves the safety performance of the vehicle during driving.

Description

Technical Field

[0001] The present invention relates to the field of new energy fuel cell hydrogen supply systems, and in particular to an integrated fuel cell hydrogen supply control panel system. Background Art

[0002] The on-board hydrogen supply system is an important part of fuel cell vehicles. This system is an energy storage system that provides hydrogen fuel with stable pressure for the fuel cell system, which is equivalent to the fuel tank in a traditional car. At present, the simplest and most commonly used on-board hydrogen supply system uses compressed hydrogen storage, that is, compressed hydrogen is stored in a hydrogen storage bottle, and the compressed hydrogen is sent to the fuel cell engine after multi-stage decompression, and a chemical reaction is carried out inside the fuel cell engine to release electrical energy to drive the car. At present, commercial vehicles use 35MPa hydrogen storage systems, and passenger cars use 70MPa hydrogen storage systems.

[0003] Due to the low density and high diffusion coefficient of hydrogen, high-pressure hydrogen storage is prone to leakage, and the higher the pressure, the greater the possibility of leakage. Once the leakage of hydrogen exceeds the specified index, there may be safety hazards. Therefore, the use of high-pressure hydrogen storage method puts higher requirements on the sealing of the on-board hydrogen supply system for fuel cell vehicles. Since the on-board hydrogen supply system needs to be repeatedly filled and continuously supplied with hydrogen, the fatigue life and strength requirements of high-pressure hydrogen storage bottles, valves and hydrogen pipelines are high. The higher the operating pressure, the greater the possibility of system failure. And due to the difficulty of online diagnosis and maintenance, it is difficult to eliminate the system failure in time. Therefore, the use of high-pressure hydrogen storage method puts higher requirements on the reliability of the on-board hydrogen supply system for fuel cell vehicles.

[0004] The inventors found in the process of implementing the present invention that:

[0005] The on-board hydrogen fuel supply system solutions currently on the market all use a decentralized structure with various valves and are installed on-site. This structure has high installation requirements, complicated pipelines, and difficult to ensure installation accuracy. Hydrogen, as the energy of the on-board hydrogen fuel system, is inherently flammable and explosive. When the vehicle is driving, the valve and pipeline connections are prone to loosening due to installation errors and long-term vibration, increasing the risk of hydrogen leakage. At the same time, decentralized installation is not conducive to later installation and maintenance. Summary of the invention

[0006] The purpose of the present invention is to provide an integrated fuel cell hydrogen supply control panel system to solve the problems of complex structure, on-site installation, large space occupation, unreliable performance, high cost and other problems of the vehicle-mounted hydrogen supply control system on the current market, and to improve the safety of hydrogen fuel cell vehicles during use.

[0007] In order to solve the above technical problems, the technical solution of the present invention is as follows: an integrated fuel cell hydrogen supply control panel system, including a panel, characterized in that:

[0008] The panel is correspondingly fixed with a hydrogenation port, a pressure gauge, a stop valve, and high and low pressure drain valves through mounting holes preset on the panel, and the display surface of the pressure gauge, the stop valve, and the knobs of the high and low pressure drain valves are all arranged on the front of the panel;

[0009] A pressure regulating valve is fixed on the back of the panel through a bracket, the air inlet end of the pressure regulating valve is connected to a filter through a pipeline, the filter is connected to a stop valve through a pipeline, and the stop valve is provided with a pipeline connected to the vehicle-mounted high-pressure hydrogen storage tank; the air outlet end of the pressure regulating valve is provided with a pipeline connected to a normally closed solenoid valve, and the solenoid valve is connected to a hydrogen fuel reactor stack through a pipeline; the pressure regulating valve is also connected to a safety relief valve and a pressure sensor;

[0010] The pipeline between the inner end of the hydrogenation port and the pressure gauge is connected via a three-way joint, and the other end of the three-way joint is connected to the pipeline between the filter and the stop valve via pipeline 1;

[0011] The high-pressure and low-pressure drain valve is provided with a high-pressure connection port, a low-pressure connection port and a safety exhaust port, wherein: the high-pressure connection port is connected to the pipeline between the filter and the stop valve through pipeline 2, and the low-pressure connection port is connected to the pipeline between the pressure regulating valve and the solenoid valve through pipeline 1.

[0012] Preferably, a four-way connection is provided on the pipeline between the filter and the stop valve for connecting with pipeline one and pipeline two.

[0013] Preferably, the pipeline is made of steel pipe and is fixedly connected by a compression sleeve pipe joint.

[0014] Preferably, the solenoid valve is replaced by a low-pressure ball valve.

[0015] Preferably, the front of the panel is provided with an instruction manual, a knob position mark, and a company logo. Beneficial Effects

[0016] The integrated fuel cell hydrogen supply control panel system provided by the present invention can meet the requirements for safe use of the fuel cell system. The system is suitable for fuel cell commercial vehicles. The hydrogen supply system of the hydrogen fuel cell vehicle using the system greatly reduces the length of the installation pipeline between valves through the modular design of the control panel integration solution, and replaces the traditional straight-through connector with a three-way connector and a four-way connector, thereby simplifying the complexity of system connection, reducing the layout space, facilitating maintenance and repair, thereby reducing costs and improving safety and reliability. At the same time, the components of the integrated fuel cell hydrogen supply control panel system can be installed in the factory, greatly reducing the pipeline connection between the on-site components, and ensuring the consistency and airtightness of production.

[0017] The safety relief valve can be set to set the safety relief pressure according to the exhaust pressure set by the pressure regulating valve. When the exhaust pressure of the pressure regulating valve is higher than the set pressure of the safety valve, the safety valve opens to exhaust the hydrogen in the pipeline; the pressure sensor can be set to transmit the pressure data delivered to the hydrogen fuel reactor stack in real time to the controller and vehicle instrument according to the exhaust pressure of the pressure regulating valve, so as to facilitate observation and control;

[0018] The normally closed solenoid valve can be opened and closed according to the instructions of the vehicle controller.

[0019] The use of ferrule-type pipe joints has simple structure, reliable sealing performance, easy use, excellent manufacturing, light and beautiful appearance; no need to add gaskets, no need for welding, saving materials, and good repeated assembly and disassembly performance; ferrule pipe joints do not need welding, thus reducing the impact of pipeline impurities on system performance;

[0020] The solenoid valve is replaced by a low-pressure ball valve to meet the needs of different customers;

[0021] The panel is equipped with instruction manual, knob position mark and company logo for user convenience.

[0022] The invention has the advantages of simple structure, modular design, small size, high reliability, convenient maintenance and overhaul, and low cost; and has strong applicability and can be applied to commercial vehicles of various models and different purposes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0024] Figure 2 It is a rear structural schematic diagram of the present invention.

[0025] As shown in the figure: 1. Hydrogenation port; 2. Pressure gauge; 3. Stop valve; 4. High and low pressure drain valves; 5. Filter; 6. Pressure regulating valve; 7. Safety relief valve; 8. Pressure sensor; 9. Solenoid valve; 10. Pipeline three; 11. Three-way connector; 12. Four-way connector; 13. Panel; 14. Pipeline one; 15. Pipeline two; 16. Bracket;

[0026] A. On-board high-pressure hydrogen storage tank; B. Hydrogen fuel reactor stack; C. Safety exhaust vent. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings, but this embodiment should not be understood as limiting the present invention.

[0028] The present invention Figure 1 and Figure 2 As shown:

[0029] An integrated fuel cell hydrogen supply control panel system includes a panel 13, on which a hydrogen filling port 1, a pressure gauge 2, a stop valve 3, and high and low pressure drain valves 4 are fixed by bolts through mounting holes preset on the panel, and the display surface of the pressure gauge, the stop valve, and the knobs of the high and low pressure drain valves are all arranged on the front of the panel;

[0030] A pressure regulating valve 6 is fixed to the upper back of the panel through a bracket 16, the air inlet end of the pressure regulating valve is connected to a filter 5 through a pipeline, the filter 5 is connected to a stop valve 3 through a pipeline, a four-way joint 12 is provided on the pipeline, and a pipeline connected to a vehicle-mounted high-pressure hydrogen storage tank A is provided on the stop valve; the air outlet end of the pressure regulating valve 6 is connected to a normally closed solenoid valve 9 through a pipeline, and the solenoid valve is connected to a hydrogen fuel reactor B through a pipeline; the pressure regulating valve is also connected to a safety relief valve 7 and a pressure sensor 8;

[0031] The pipeline between the inner end of the hydrogenation port 1 and the pressure gauge is connected via a three-way joint 11, and the other end of the three-way joint is connected to the four-way joint 12 between the filter 5 and the stop valve 3 via a pipeline 14;

[0032] The high- and low-pressure drain valve 4 has a high-pressure connection port, a low-pressure connection port and a safety exhaust port C, wherein: the high-pressure connection port is connected to the four-way between the filter 5 and the stop valve 3 through a pipeline 2 15, and the low-pressure connection port is connected to the pipeline between the pressure regulating valve 6 and the solenoid valve 9 through a pipeline 3 10.

[0033] The pipelines are made of steel pipes and are fixedly connected by clamp-type pipe joints.

[0034] The solenoid valve can be replaced by a low-pressure ball valve to meet the needs of different customers.

[0035] The front of the panel may be provided with an instruction manual, a knob position mark, and a company logo for easy identification by the user.

[0036] Working principle of the present invention:

[0037] When hydrogen needs to be replenished from the outside, high-pressure hydrogen is first introduced from the hydrogen filling port 1 through the three-way connector 11, the four-way connector 12, and the stop valve 3 into the on-board high-pressure hydrogen storage tank A, and the pressure in the pipeline is monitored by the pressure gauge 2.

[0038] During normal use, the hydrogen in the high-pressure hydrogen storage tank A enters the hydrogen fuel reactor B along the stop valve 3, the four-way connector 12, the filter 5, the pressure regulating valve 6, and the solenoid valve 9 on the pipeline.

[0039] When the pipeline needs to be repaired, the knob of the high and low pressure drain valve 4 is initially set at the D3 position, which is normally closed. The limit bolts on both sides of the knob of the high and low pressure drain valve 4 need to be removed during maintenance:

[0040] First, turn the knob of the high- and low-pressure drain valve 4 to the D2 position: the high-pressure hydrogen from the high-pressure hydrogen storage tank A to the air inlet of the pressure regulating valve 6 goes along the four-way joint 12, the second pipeline 15, and enters the high-pressure connection port of the high- and low-pressure drain valve 4, and is discharged from the safety exhaust port C;

[0041] Then turn the knob of the high and low pressure drain valve 4 to the D1 position: the low pressure hydrogen from the outlet of the pressure regulating valve 6 to the air inlet of the hydrogen fuel reactor B goes along the pipeline 3 10, enters the low pressure connection port of the high and low pressure drain valve 4, and is discharged from the safety exhaust port C.

[0042] Parts not described in detail in this specification are well-known technologies in the art.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated fuel cell hydrogen supply control panel system, comprising a panel (13), characterized in that: The panel is fixed with a hydrogenation port (1), a pressure gauge (2), a stop valve (3), and high- and low-pressure drain valves (4) through mounting holes preset on the panel, and the display surface of the pressure gauge, the stop valve, and the knobs of the high- and low-pressure drain valves are all arranged on the front of the panel; A pressure regulating valve (6) is fixed to the back of the panel via a bracket; the air inlet end of the pressure regulating valve is connected to a filter (5) via a pipeline; the filter is connected to a stop valve (3) via a pipeline; the stop valve is provided with a pipeline connected to an on-board high-pressure hydrogen storage tank; the air outlet end of the pressure regulating valve is provided with a pipeline connected to a normally closed electromagnetic valve (9); the electromagnetic valve is further connected to a hydrogen fuel cell reactor via a pipeline; the pressure regulating valve is also connected to a safety relief valve (7) and a pressure sensor (8); The pipeline between the inner end of the hydrogenation port (1) and the pressure gauge is connected via a three-way joint (11), and the other end of the three-way joint is connected to the pipeline between the filter (5) and the stop valve (3) via a pipeline 1 (14); The high-pressure and low-pressure exhaust valve (4) has a high-pressure connection port, a low-pressure connection port and a safety exhaust port, wherein: the high-pressure connection port is connected to the pipeline between the filter (5) and the stop valve (3) through a second pipeline (15), and the low-pressure connection port is connected to the pipeline between the pressure regulating valve (6) and the solenoid valve (9) through a third pipeline (10); A four-way joint (12) is provided on the pipeline between the filter (5) and the stop valve (3) for connecting with pipeline one and pipeline two; The air inlet of the air inlet end of the pressure regulating valve (6) is sequentially connected to the four-way joint (12), the second pipeline (15), the high-pressure connection port of the high- and low-pressure drain valve (4), and the safety exhaust port; the air outlet of the air outlet end of the pressure regulating valve (6) is sequentially connected to the third pipeline (10), the low-pressure connection port entering the high- and low-pressure drain valve (4), and the safety exhaust port; When hydrogen is replenished from the outside, high-pressure hydrogen is first introduced from the hydrogenation port (1) through the three-way connector (11), the four-way connector (12), and the stop valve (3) into the vehicle-mounted high-pressure hydrogen storage tank, and the pressure on the pipeline is monitored by the pressure gauge (2); During normal use, the hydrogen in the high-pressure hydrogen storage tank enters the hydrogen fuel cell reactor along the stop valve (3), the four-way connector (12), the filter (5), the pressure regulating valve (6), and the solenoid valve (9) on the pipeline.

2. According to claim 1, an integrated fuel cell hydrogen supply control panel system is characterized in that: The pipelines are made of steel pipes and are fixedly connected by clamp-type pipe joints.

3. The integrated fuel cell hydrogen supply control panel system according to claim 1, characterized in that: The solenoid valve (9) is replaced by a low-pressure ball valve.

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