Vehicle-mounted hydrogen replacement system and vehicle

Abstract

The utility model provides a vehicle-mounted hydrogen replacement system and a vehicle, and belongs to the technical field of vehicles, the vehicle-mounted hydrogen replacement system comprises a hydrogen storage subsystem, a hydrogen filling subsystem, a hydrogen emptying subsystem and a hydrogen storage controller, the hydrogen storage subsystem comprises a hydrogen storage bottle and a combined bottle valve arranged at a bottle opening of the hydrogen storage bottle, and the combined bottle valve comprises a first electric control valve; a hydrogen inlet pipe is arranged at a bottle opening of the hydrogen storage bottle, and the first electric control valve is arranged on the hydrogen inlet pipe. And the hydrogen filling subsystem is communicated with a hydrogen inlet pipe through a hydrogenation pipe. The hydrogen discharging subsystem comprises a hydrogen discharging pipe and a second electric control valve arranged on the hydrogen discharging pipe, and the hydrogen discharging pipe is communicated with the hydrogen inlet pipe. And the hydrogen storage controller is connected with the first electric control valve and the second electric control valve through lines. The system adopts the hydrogen storage controller to control the electric control valve to open and close, so that the operation time is shortened, the hydrogen replacement efficiency is improved, and the risks of high-pressure gas ejection, gas leakage and electrostatic ignition caused by manual opening and closing of the valve are also avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and particularly relates to an on-vehicle hydrogen replacement system and a hydrogen fuel vehicle configured with such a replacement and hydrogen discharge system. Background Art

[0002] The fuel hydrogen for hydrogen fuel vehicles needs to meet the national standard of hydrogen purity above 99.97%. Therefore, after the hydrogen fuel vehicle rolls off the production line, hydrogen replacement must be carried out before hydrogen refueling. It is necessary to repeatedly fill and discharge hydrogen in the on-vehicle hydrogen storage system with 99.999% pure hydrogen for multiple times to meet the requirement of hydrogen purity above 99.97% and ensure the stable operation of the fuel cell system. Currently, there are the following problems in the hydrogen replacement operation of hydrogen fuel vehicles: The operator needs to first open the manual stop valve of the bottle valve on each gas cylinder of the on-vehicle hydrogen storage system. Before each hydrogen refueling, the replacement manual valve needs to be manually closed, and the replacement manual valve needs to be opened before hydrogen discharge. The hydrogen replacement operation is cumbersome, the operation is complex and time-consuming, resulting in a long operation time, time-consuming and laborious; in addition, there is a risk of high-pressure gas spraying and electrostatic ignition of gas leakage when manually opening and closing the valve. Summary of the Utility Model

[0003] An embodiment of the utility model provides an on-vehicle hydrogen replacement system and a vehicle, aiming at the problem of manual valve opening for hydrogen replacement operation after the hydrogen energy vehicle rolls off the production line.

[0004] In a first aspect, to achieve the above object, the technical solution adopted by the utility model is: providing an on-vehicle hydrogen replacement system, including:

[0005] A hydrogen storage subsystem, including a hydrogen storage cylinder and a combined bottle valve arranged at the bottle mouth of the hydrogen storage cylinder, the combined bottle valve including a first electric control valve; an inlet hydrogen pipe is arranged at the bottle mouth of the hydrogen storage cylinder, and the first electric control valve is arranged on the inlet hydrogen pipe;

[0006] A hydrogen filling subsystem, which is connected to the inlet hydrogen pipe through a hydrogen refueling pipe;

[0007] A hydrogen evacuation subsystem, including an exhaust hydrogen pipe and a second electric control valve arranged on the exhaust hydrogen pipe, the exhaust hydrogen pipe is connected to the inlet hydrogen pipe; and

[0008] A hydrogen storage controller, which is connected to the first electric control valve and the second electric control valve through a circuit.

[0009] In combination with the first aspect, in an implementable manner, it includes N groups of parallel-connected hydrogen storage subsystems, the inlet hydrogen pipes of each hydrogen storage subsystem are all connected in parallel to a parallel pipeline, the hydrogen filling subsystem and the hydrogen evacuation subsystem are both connected to the parallel pipeline of the hydrogen storage subsystem, a first pressure sensor is arranged on the parallel pipeline, and the first pressure sensor is connected to the hydrogen storage controller through a circuit; where N is a natural number greater than 1.

[0010] In combination with the first aspect, in an implementable manner, an emergency pressure relief pipe is further provided at the bottle mouth of the hydrogen storage bottle, and a TPRD safety pressure relief device is provided on the emergency pressure relief pipe.

[0011] In combination with the first aspect, in an implementable manner, the emergency pressure relief pipe is communicated with the hydrogen discharge pipe through a pipeline, and a pressure relief valve is provided on the pipeline between the emergency pressure relief pipe and the hydrogen discharge pipe.

[0012] In combination with the first aspect, in an implementable manner, the combined bottle valve further includes a first one-way valve provided on the emergency pressure relief pipe.

[0013] In combination with the first aspect, in an implementable manner, a hydrogen concentration sensor and a temperature sensor are provided at the bottle mouth of the hydrogen storage bottle, and both the hydrogen concentration sensor and the temperature sensor are connected to the hydrogen storage controller by wires.

[0014] In combination with the first aspect, in an implementable manner, the hydrogen filling subsystem further includes a second one-way valve, a first pressure gauge, and a first filter provided on the hydrogen filling pipe.

[0015] In combination with the first aspect, in an implementable manner, a hydrogen supply subsystem is further included. The hydrogen supply subsystem includes a hydrogen supply pipe and a third electric control valve provided on the hydrogen supply pipe. The hydrogen supply pipe is communicated with the hydrogen inlet pipe through a pipeline, and the hydrogen discharge pipe is communicated with the hydrogen supply pipe; the third electric control valve is connected to the hydrogen storage controller by wires.

[0016] In combination with the first aspect, in an implementable manner, a second filter, a second pressure sensor, and an electric control pressure reducing valve are further provided on the hydrogen supply pipe, and both the second pressure sensor and the electric control pressure reducing valve are connected to the hydrogen storage controller by wires.

[0017] Compared with the prior art, the beneficial effects of the on-vehicle hydrogen replacement system provided by the present utility model are as follows: Electric control valves are provided at both the bottle mouth of the hydrogen storage bottle and the hydrogen discharge pipe, and the hydrogen storage controller is used to control the opening and closing of the two electric control valves for automatic hydrogen discharge, eliminating the need for operators to manually open or close the valves, reducing the complexity of manual operations, shortening the operation time, and improving the hydrogen replacement efficiency. At the same time, when replacing hydrogen, there is no need for operators to approach closely, avoiding the risks of high-pressure gas ejection and electrostatic ignition caused by gas leakage during manual opening and closing of the valves.

[0018] In a second aspect, an embodiment of the present utility model further provides a vehicle including the on-vehicle hydrogen replacement system.

[0019] The hydrogen fuel vehicle provided by the embodiment of the present utility model adopts a hydrogen storage controller to control the opening and closing of an electromagnetic valve, which shortens the operation time, improves the hydrogen replacement efficiency, and also avoids the risks of high-pressure gas ejection and electrostatic ignition caused by gas leakage when manually opening and closing the valve. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the working principle of the vehicle-mounted hydrogen replacement system provided by the embodiment of the present utility model;

[0021] Description of the Reference Numerals:

[0022] 1. Hydrogen storage cylinder; 2. Third filter; 3. Hydrogen inlet pipe; 4. First electromagnetic valve; 5. Temperature sensor; 6. First manual stop valve; 7. First one-way valve; 8. Hydrogen concentration sensor; 9. Emergency pressure relief pipe; 10. Parallel pipeline; 11. Replacement line; 12. Quick connector; 13. Push switch; 14. Hydrogen discharge pipe; 15. Second electromagnetic valve; 16. Pressure relief valve; 17. Second pressure sensor; 18. Third electromagnetic valve; 19. Hydrogen supply pipe; 20. Electromagnetic pressure reducing valve; 21. Second filter; 22. Hydrogen filling pipe; 23. First filter; 24. Second one-way valve; 25. First pressure gauge; 26. First pressure sensor; HMS. Hydrogen storage controller; TC. Fuel cell. Detailed Embodiment

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary-secondary or sequential relationship between these entities or operations.

[0025] Please refer to Figure 1, the on-vehicle hydrogen replacement system provided by the present utility model will be described below. The on-vehicle hydrogen replacement system includes a hydrogen storage subsystem, a hydrogen filling subsystem, a hydrogen evacuation subsystem, and a hydrogen storage controller HMS. The hydrogen storage subsystem is used to store hydrogen, including a hydrogen storage cylinder 1 and a combined cylinder valve provided at the mouth of the hydrogen storage cylinder 1. The combined cylinder valve includes a first electric control valve 4; a hydrogen inlet pipe 3 is provided at the mouth of the hydrogen storage cylinder 1, and the first electric control valve 4 is provided on the hydrogen inlet pipe 3. The hydrogen filling subsystem is connected to the hydrogen inlet pipe 3 through a hydrogen filling pipe 22 and is used to fill pure hydrogen into the hydrogen storage cylinder 1. The hydrogen evacuation subsystem includes a hydrogen discharge pipe 14 and a second electric control valve 15 provided on the hydrogen discharge pipe 14. The hydrogen discharge pipe 14 is connected to the hydrogen inlet pipe 3; when the first electric control valve 4 and the second electric control valve 15 are opened, the hydrogen in the hydrogen storage cylinder 1 can be discharged and emptied through the hydrogen discharge pipe 14. The hydrogen storage controller HMS is connected to the first electric control valve 4 and the second electric control valve 15 through lines. The hydrogen storage controller HMS is used to control the opening and closing of the two electric control valves. At the same time, the hydrogen concentration sensor 8, pressure sensor, temperature sensor 5, and other electric control valves in the entire replacement system can all be controlled by the hydrogen storage controller HMS.

[0026] The on-vehicle hydrogen replacement system provided by the present utility model, compared with the prior art, has the beneficial effects that: electric control valves are provided at the mouth of the hydrogen storage cylinder 1 and on the hydrogen discharge pipe 14, and the hydrogen storage controller HMS is used to control the opening and closing of the two electric control valves to automatically discharge hydrogen, eliminating the need for operators to manually open or close the valves, reducing the complexity of manual operation, shortening the operation time, and improving the hydrogen replacement efficiency. At the same time, when replacing hydrogen, there is no need for operators to approach closely, and the risks of high-pressure gas ejection and electrostatic ignition caused by gas leakage during manual opening and closing of the valves are avoided.

[0027] Among them, the push switch 13 of the hydrogen storage controller HMS can be selectively provided on the instrument panel console. The signal of pressing the push switch 13 is transmitted to the hydrogen storage controller HMS, and the hydrogen storage controller HMS then sends opening and closing signals to each electric control valve.

[0028] The hydrogen replacement working principle of the on-vehicle hydrogen replacement system provided by the embodiment of the present utility model is as follows:

[0029] (1) Press the push switch 13. The hydrogen storage controller HMS receives the valve opening signal, first opens the first electric control valves 4 on all the hydrogen storage cylinders 1, and then opens the second electric control valve 15 step by step as follows after 2 seconds: 10% stays for 1 second, 25% stays for 1 second, 50% stays for 1 second, 75% stays for 1 second, and then 100% is fully opened and maintained. The hydrogen discharge pipe 14 is opened, and the gas is discharged after silencing at the first exhaust port.

[0030] (2) Press the pressing switch 13 again. After the hydrogen storage controller HMS receives the valve closing signal, it first completely closes the second electronic control valve 15, and then closes the first electronic control valve 4 on all hydrogen storage cylinders 1 after waiting for 1 second, thereby closing the replacement hydrogen release channel.

[0031] Optionally, the pressing switch 13 is directly connected to the hydrogen storage controller HMS through the replacement line 11. The end of the replacement line 11 is provided with a female connector, which is used in cooperation with the pressing switch 13 in the replacement key and the male connector. The replacement key includes a male connector and a pressing switch 13. When the switch is pressed, an open valve signal is sent to the hydrogen storage controller HMS, and when the pressing switch 13 rebounds, a valve closing signal is sent to the hydrogen storage controller HMS. Among them, the female connector and the male connector cooperate to form a quick connector 12.

[0032] The hydrogen storage controller HMS can choose to purchase models from suitable manufacturers. For example, the RapidECU-HM of Huahai Technology is a 32-bit automotive controller product of Huahai Technology, and the definition, design, and verification of the entire product are carried out in accordance with the ISO26262 standard. Another example is the hydrogen storage controller HMS of Beijing Boken Energy Saving Technology Co., Ltd., which has functions such as hydrogen SOC and mass calculation, open and short circuit fault diagnosis functions for external sensors (pressure sensor, temperature sensor 5, hydrogen concentration sensor), a power-off delay function, a hydrogen refueling times recording function, an online programming and calibration function, and the terminal resistance requirement is adapted according to the vehicle integration plan.

[0033] In some embodiments, it includes N groups of parallel hydrogen storage subsystems. The hydrogen inlet pipes 3 of each hydrogen storage subsystem are all connected in parallel to the parallel pipeline 10. The hydrogen refueling subsystem and the hydrogen evacuation subsystem are both connected to the parallel pipeline 10 of the hydrogen storage subsystem. A first pressure sensor 26 is provided on the parallel pipeline 10, and the first pressure sensor 26 is connected to the hydrogen storage controller HMS through a line; where N is a natural number greater than 1. For a system with multiple groups of parallel hydrogen storage cylinders 1, for hydrogen refueling, gas evacuation, and supplying hydrogen to the fuel cell TC, hydrogen is filled into the hydrogen storage cylinders 1 through the hydrogen inlet pipes 3 and the parallel pipeline 10. Specifically, to evacuate part of the impure gas in the hydrogen storage cylinders 1, or to supply the fuel cell TC when the gas in the hydrogen storage cylinders 1 meets the purity requirement, it is necessary to replace the gas in the hydrogen inlet pipes 3 and each hydrogen storage cylinder 1, and converge to the parallel pipeline 10, and then evacuate through the hydrogen discharge pipes 14 respectively, or supply the fuel cell TC through the hydrogen supply pipe 19. Such a design structure is simple, reduces the consumption of pipeline layout and labor costs, makes the pipeline layout neat, not chaotic and not crowded, and saves layout space. Through the first pressure sensor 26 on the parallel pipeline 10, the hydrogen pressure in each hydrogen storage cylinder 1 can be collected in real time, so as to be able to adjust in real time, avoid the gas pressure in the pipeline and the hydrogen storage cylinders 1 being too high and causing danger, and also avoid the pressure being too low and affecting the performance of the fuel cell TC.

[0034] When it comes to hydrogen fuel cell vehicles, "safety" has always been a crucial issue that cannot be avoided. As is well known, since hydrogen is a flammable and explosive substance, there are potential leakage and explosion hazards during the processes of preparation, storage, transportation, filling, and use. Hydrogen safety has become an important prerequisite for the application of hydrogen energy and large-scale commercial promotion. The hydrogen storage system, as an indispensable part of fuel cell vehicles, is one of the important factors affecting the use safety and overall stability of fuel cell vehicles, and is mainly composed of components such as high-pressure gas cylinders, cylinder valves, pressure reducing valves, etc. Among them, the cylinder valve, as a key link in the hydrogen storage system, has the functions of sealing the gas cylinder and controlling the opening and closing of gas conduction. Once there are problems with its safety quality, it will affect the normal use of the hydrogen storage system and fuel cell vehicles, and in severe cases, it will even trigger safety accidents. Therefore, developing a high-pressure cylinder valve for vehicles with high safety, strong sealing performance, and good switching characteristics to ensure that the hydrogen storage cylinder must always be in a safe state has become a key factor in efficiently solving the hydrogen storage problem and promoting the safe development of the industrialization of hydrogen energy and fuel cell vehicles.

[0035] The technical means adopted in this application is to set up a TPRD safety relief device. Specifically, an emergency relief pipe 9 is also provided at the mouth of the hydrogen storage cylinder 1, and a TPRD safety relief device is provided on the emergency relief pipe 9. The TPRD safety relief device is a thermal relief device, mainly used to automatically release the gas in the cylinder when the temperature inside or outside the cylinder reaches 110°C ± 5°C, so as to prevent accidents such as deflagration and explosion caused by overheating and overpressure of hydrogen in the hydrogen storage cylinder 1. This device usually has a glass bulb or fusible alloy built-in. When the activation temperature is reached, the glass bulb breaks or the fusible alloy structure slowly melts due to the influence of the uniform heat distribution, thereby expanding the relief channel and quickly reducing the gas pressure in the cylinder to a safe level. The design of the TPRD safety relief device aims to improve the safety of the hydrogen storage system and respond to extreme temperature conditions in an automated manner to avoid potential hazards caused by excessive temperature.

[0036] Among them, a temperature sensor 5 is provided at the mouth of the hydrogen storage cylinder 1. The temperature sensor 5 is connected to the hydrogen storage controller HMS by wire. The hydrogen storage controller HMS can obtain the temperature signals inside and outside the hydrogen storage cylinder 1 in real time, manage the hydrogen storage cylinder 1 in a timely manner, and avoid the temperature of the hydrogen storage cylinder 1 exceeding the limit value, thereby avoiding accidents.

[0037] The temperature sensor 5 preferably adopts a negative temperature coefficient thermistor (NTC thermistor, that is, Negative Temperature Coefficient thermistor). The thermistor is a sensor resistor, which is sensitive and its resistance value changes with the change of temperature, and can feedback the temperature changes inside and outside the hydrogen storage cylinder 1 in real time.

[0038] In some embodiments, the emergency pressure relief pipe 9 is connected to the hydrogen discharge pipe 14 through a pipeline, and a pressure relief valve 16 is provided on the pipeline between the emergency pressure relief pipe 9 and the hydrogen discharge pipe 14. When the hydrogen storage cylinder 1 is in an emergency state, pressure can also be relieved through the pressure relief valve and discharged through the hydrogen discharge pipe 14, further enhancing the safety of the hydrogen system. For a system with multiple hydrogen storage cylinders 1 connected in parallel, the emergency pressure relief pipes 9 on each hydrogen storage cylinder 1 are connected in parallel and then connected to the TPRD safety pressure relief device. Only one TPRD safety pressure relief device is needed, which can not only ensure safety but also simplify the pipeline layout.

[0039] In some embodiments, the combined bottle valve further includes a first check valve 7 provided on the emergency pressure relief pipe 9. The emergency pressure relief pipe 9 is also provided with a first check valve 7 that only allows hydrogen to be discharged outward to prevent external gas from entering the hydrogen storage cylinder 1.

[0040] In some embodiments, a hydrogen concentration sensor 8 and a temperature sensor 5 are provided at the mouth of the hydrogen storage cylinder 1. Both the hydrogen concentration sensor 8 and the temperature sensor 5 are connected to the hydrogen storage controller HMS by wires. Among them, each hydrogen storage cylinder 1 is provided with a temperature sensor 5. The hydrogen concentration sensor 8 can be provided on the parallel pipeline 10, and multiple hydrogen concentration sensors 8 are provided according to the number of hydrogen storage cylinders 1. When the hydrogen concentration signal collected by the hydrogen concentration sensor 8 meets the usage requirements, hydrogen replacement is no longer required. Hydrogen enters the parallel pipeline 10 through the hydrogen supply pipe 19, and then enters the hydrogen supply pipe 19 through the parallel pipeline 10 to supply the fuel cell TC.

[0041] In some embodiments, the hydrogen filling subsystem further includes a second check valve 24, a first pressure gauge 25, and a first filter 23 provided on the hydrogen filling pipe 22. Among them, a third filter 2 is provided on the hydrogen inlet pipe 3. In this application, multiple filters are provided. Hydrogen needs to be preliminarily filtered starting from hydrogen filling, and also needs to be filtered before entering the hydrogen storage cylinder 1, and hydrogen also needs to be filtered before being discharged from the hydrogen storage cylinder 1 and supplied to the fuel cell to keep the hydrogen pure and improve the performance of the fuel cell.

[0042] In some embodiments, a hydrogen supply subsystem is further included. The hydrogen supply subsystem includes a hydrogen supply pipe 19 and a third electric control valve 18 provided on the hydrogen supply pipe 19. The hydrogen supply pipe 19 is connected to the hydrogen inlet pipe 3 through a pipeline, and the hydrogen discharge pipe 14 is connected to the hydrogen supply pipe 19; the electric control pressure reducing valve 20 is connected to the hydrogen storage controller HMS by wires. After repeated hydrogen charging and discharging, the hydrogen in the hydrogen storage cylinder 1 reaches the national standard purity. At this time, the third electric control valve 18 is opened through the hydrogen storage controller HMS to supply hydrogen to the fuel cell TC.

[0043] Among them, new energy vehicles refer to a type of vehicle that realizes green and low-carbon travel. FC is the abbreviation of Fuel Cell, which is translated as "fuel cell TC".

[0044] In some embodiments, a second filter 21, a second pressure sensor 17, and an electronically controlled pressure reducing valve 20 are further provided on the hydrogen supply pipe 19. The second pressure sensor 17 and the electronically controlled pressure reducing valve 20 are connected to the hydrogen storage controller HMS through wires. Before the pure hydrogen is supplied to the fuel cell TC, it also needs to be filtered and depressurized to ensure the reliability of use.

[0045] Based on the above embodiments, the working processes of hydrogen addition, hydrogen replacement, and hydrogen supply of the on-vehicle hydrogen replacement system provided by the present utility model are described in detail as follows:

[0046] Hydrogen addition process: The hydrogen storage controller HMS controls the second electronically controlled valve 15 to close and the first electronically controlled valve 4 to open. The hydrogen passes through the first filter 23 on the hydrogen addition pipe 22, opens the first one-way valve 7 and enters the parallel pipeline 10, and then enters the hydrogen storage bottle 1 through each hydrogen inlet pipe 3 communicated with the parallel pipeline 10, respectively through the first electronically controlled valve 4 and the third filter 2. When the pressure in the hydrogen storage bottle 1 reaches the set value, the hydrogen filling subsystem is closed and the first electronically controlled valve 4 is closed.

[0047] Hydrogen replacement process: First, the first electronically controlled valve 4 is opened. The hydrogen in the hydrogen storage bottle 1 enters the parallel pipeline 10 through the third filter 2 and the first electronically controlled valve 4. According to the previous description, the second electronically controlled valve 15 of the hydrogen evacuation subsystem is opened with a delay. The hydrogen enters the hydrogen discharge pipe 14 through the electronically controlled pressure reducing valve 20 on the hydrogen supply pipe 19 and is discharged from the evacuation port through the second electronically controlled valve 15. When the pressure in the hydrogen storage bottle 1 drops to the set value, the second electronically controlled valve 15 and the first electronically controlled valve 4 are closed, and the hydrogen replacement is completed.

[0048] Hydrogen supply process: After 5 times of repeated hydrogen charging and discharging, the hydrogen storage controller HMS receives a signal that the hydrogen concentration reaches the purity requirement, and instructs the first electronically controlled valve 4 and the third electronically controlled valve 18 to open. The hydrogen in the hydrogen storage bottle 1 passes through the hydrogen inlet pipe 3 and the parallel pipeline 10, and after being depressurized by the second filter 21 and the electronically controlled pressure reducing valve 20 on the hydrogen supply pipe 19, it is supplied to the fuel cell TC.

[0049] In the system of the present application, each electronically controlled valve can be a solenoid valve or an electric valve. Among them, the third electronically controlled valve 18 provided on the hydrogen supply pipe 19 can be a manual stop valve, and a manual stop valve can also be provided on the hydrogen inlet pipe 3 entering the hydrogen storage bottle 1 to prevent the hydrogen storage bottle 1 from being closed manually in case of electronic control failure. Specifically, the combined bottle valve further includes a first manual stop valve 6 provided on the hydrogen inlet pipe 3.

[0050] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0051] Based on the same inventive concept, an embodiment of the present application further provides a vehicle, including the on-vehicle hydrogen replacement system described above.

[0052] For the vehicle provided by the embodiment of the present utility model, a hydrogen storage controller HMS is used to control the opening and closing of the electric control valve, which shortens the operation time, improves the hydrogen replacement efficiency, and also avoids the risks of high-pressure gas ejection and electrostatic ignition caused by gas leakage when manually opening and closing the valve.

[0053] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vehicle-mounted hydrogen replacement system, characterized in that: include: A hydrogen storage subsystem comprises a hydrogen storage bottle (1) and a combined bottle valve arranged at the bottle mouth of the hydrogen storage bottle (1), wherein the combined bottle valve comprises a first electrically controlled valve (4); a hydrogen inlet pipe (3) is arranged at the bottle mouth of the hydrogen storage bottle (1), and the first electrically controlled valve (4) is arranged on the hydrogen inlet pipe (3); A hydrogen filling subsystem connected to the hydrogen inlet pipe (3) via a hydrogen filling pipe (22); a hydrogen exhaust subsystem, comprising a hydrogen exhaust pipe (14) and a second electrically controlled valve (15) arranged on the hydrogen exhaust pipe (14), wherein the hydrogen exhaust pipe (14) is connected to the hydrogen inlet pipe (3); and A hydrogen storage controller (HMS) is connected to the first electrically controlled valve (4) and the second electrically controlled valve (15) via a line.

2. The vehicle-mounted hydrogen replacement system according to claim 1, characterized in that: It comprises N groups of hydrogen storage subsystems connected in parallel, each of the hydrogen inlet pipes (3) of the hydrogen storage subsystems is connected in parallel to a parallel pipeline (10), the hydrogen filling subsystem and the hydrogen exhausting subsystem are connected to the parallel pipeline (10) of the hydrogen storage subsystem, a first pressure sensor (26) is provided on the parallel pipeline (10), and the first pressure sensor (26) is connected to the hydrogen storage controller (HMS) through a line; wherein N is a natural number greater than 1.

3. The vehicle-mounted hydrogen replacement system according to claim 1, characterized in that: The bottle mouth of the hydrogen storage bottle (1) is also provided with an emergency pressure relief pipe (9), and the emergency pressure relief pipe (9) is provided with a TPRD safety pressure relief device.

4. The vehicle-mounted hydrogen replacement system according to claim 3, characterized in that: The emergency pressure relief pipe (9) is connected to the hydrogen discharge pipe (14) through a pipeline, and a pressure relief valve (16) is provided on the pipeline between the emergency pressure relief pipe (9) and the hydrogen discharge pipe (14).

5. The vehicle-mounted hydrogen replacement system according to claim 3, characterized in that: The combined bottle valve further comprises a first one-way valve (7) arranged on the emergency pressure relief pipe (9).

6. The vehicle-mounted hydrogen replacement system according to claim 1, characterized in that: The bottle mouth of the hydrogen storage bottle (1) is provided with a hydrogen concentration sensor (8) and a temperature sensor (5), and the hydrogen concentration sensor (8) and the temperature sensor (5) are both connected to the hydrogen storage controller (HMS) circuit.

7. The vehicle-mounted hydrogen replacement system according to claim 1, characterized in that: The hydrogen filling subsystem further comprises a second one-way valve (24), a first pressure gauge (25) and a first filter (23) arranged on the hydrogen filling pipe (22).

8. The vehicle-mounted hydrogen replacement system according to any one of claims 1 to 7, characterized in that: The invention also comprises a hydrogen supply subsystem, wherein the hydrogen supply subsystem comprises a hydrogen supply pipe (19) and a third electrically controlled valve (18) arranged on the hydrogen supply pipe (19); the hydrogen supply pipe (19) is connected to the hydrogen inlet pipe (3) through a pipeline, and the hydrogen exhaust pipe (14) is connected to the hydrogen supply pipe (19); the third electrically controlled valve (18) is connected to the hydrogen storage controller (HMS) through a line.

9. The vehicle-mounted hydrogen replacement system according to claim 8, characterized in that: The hydrogen supply pipe (19) is also provided with a second filter (21), a second pressure sensor (17) and an electrically controlled pressure reducing valve (20); the second pressure sensor (17) and the electrically controlled pressure reducing valve (20) are connected to the hydrogen storage controller (HMS) via lines.

10. A vehicle, characterized in that: It comprises the vehicle-mounted hydrogen replacement system as described in any one of claims 1 to 9.

Images