Intelligent hydrogenation system and hydrogenation method for hydrogen refueling station

Abstract

The invention discloses a hydrogen refueling station intelligent hydrogen refueling system and a hydrogen refueling method, and relates to the technical field of hydrogen energy application, the hydrogen refueling station intelligent hydrogen refueling system comprises a hydrogen refueling machine, a liquid hydrogen conveying pipeline is arranged in the hydrogen refueling machine, an induction mechanism is arranged on the lower side of the liquid hydrogen conveying pipeline, the induction mechanism comprises a placing box, and the upper side of the placing box is open; a plurality of receiving assemblies are tightly arranged in the containing box, each receiving assembly comprises a first air cylinder, a first receiving plate is fixed to the driving end of each first air cylinder, a pressure sensing module is laid on the surface of each first receiving plate, a spring is connected to the lower side of each first receiving plate, and a second receiving plate is connected to the other end of each spring; a third receiving plate is fixed to the surface of the fixed end of the first air cylinder. The leakage state of the internal pipeline of the hydrogenation machine is detected, whether leaked liquid is water or hydrogen is judged, classified collection and discharge are performed according to different conditions, confluence gas is adjusted according to the leakage state of hydrogen so as to reduce the concentration, and safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen energy applications, and specifically to an intelligent hydrogen refueling system and a hydrogen refueling method for a hydrogen refueling station. Background Technique

[0002] A hydrogen refueling station is an infrastructure specifically used to fill hydrogen fuel into the hydrogen storage cylinders of hydrogen fuel cell vehicles, hydrogen internal combustion engine vehicles, or hydrogen-natural gas hybrid fuel vehicles, etc. Different from traditional gas stations, hydrogen refueling stations store and transport hydrogen in a high-pressure or low-temperature manner to meet the hydrogen refueling needs of hydrogen fuel cell vehicles.

[0003] A hydrogen refueling station mainly consists of a hydrogen production system, a compression system, a storage system, a refueling system, a control system, and other parts. Hydrogen can be transported to the hydrogen refueling station by means of long-tube trailers, liquid hydrogen tank trucks, pipelines, etc., or can be generated by in-station hydrogen production equipment. After the hydrogen is pressurized by a compressor, it is stored in a high-pressure storage tank in the station. When hydrogen needs to be refueled, under the action of the high-pressure difference between the fixed high-pressure container in the hydrogen refueling station and the vehicle-mounted hydrogen storage container, the hydrogen is quickly filled into the vehicle-mounted hydrogen storage container through the refueling system.

[0004] The hydrogen refueled at the hydrogen refueling station can be gaseous or liquid. At present, high-pressure gaseous hydrogen refueling stations are the mainstream, with mature technology and wide application. Liquid hydrogen refueling stations, due to their high hydrogen storage density and fast refueling ability, have gradually received attention, especially suitable for heavy vehicles and large-scale hydrogen refueling requirements. When liquid hydrogen leaks into the ambient temperature environment, it will quickly absorb the heat of the surrounding environment and vaporize. If the leakage rate is less than the instantaneous vaporization rate, the liquid hydrogen will quickly vaporize near the leakage port. If the leakage rate is greater than the instantaneous vaporization rate, part of the liquid hydrogen will accumulate on the solid surface near the leakage port and expand into a liquid pool. The hydrogen concentration detector cannot detect it in the first time, and hydrogen refueling stations mostly rely on natural ventilation. Therefore, when the leakage rate is relatively fast, the internal hydrogen concentration will rise rapidly within a period of time, having a certain potential safety hazard. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent hydrogen refueling system and a hydrogen refueling method for a hydrogen refueling station to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: an intelligent hydrogen refueling system and a hydrogen refueling method for a hydrogen refueling station, including a hydrogen refueling machine. The hydrogen refueling machine is internally provided with a liquid hydrogen delivery pipeline for transporting liquid hydrogen. The inlet end of the liquid hydrogen delivery pipeline is externally connected to a liquid hydrogen storage tank for storing liquid hydrogen. The outlet end of the liquid hydrogen delivery pipeline is connected to a hydrogen refueling gun for connecting to the gas tank of a hydrogen energy vehicle. An induction mechanism is arranged on the lower side of the liquid hydrogen delivery pipeline for receiving the liquid dripping from the liquid hydrogen delivery pipeline, analyzing and collecting it.

[0007] According to the above technical solution, the induction mechanism includes a placement box with an open upper side. Inside the placement box, several receiving components are closely arranged. Each receiving component includes a first cylinder. A first receiving plate is fixed to the driving end of the first cylinder. A pressure sensing module is laid on the surface of the first receiving plate. A spring is connected to the lower side of the first receiving plate, and the other end of the spring is connected to a second receiving plate. A third receiving plate is fixed to the surface of the fixed end of the first cylinder.

[0008] According to the above technical solution, under normal conditions, the first receiving plate, the second receiving plate, and the third receiving plate of each receiving component correspond to each other, forming three planar layers, namely the induction layer, the water collection layer, and the hydrogen collection layer in sequence. The surface height of the first receiving plate is lower than the surface height of the placement box.

[0009] According to the above technical solution, a water outlet is provided on one side of the placement box corresponding to the water collection layer, and a hydrogen outlet is provided corresponding to the hydrogen collection layer.

[0010] According to the above technical solution, a liquid discharge box is provided on one side of the hydrogen filling machine. The liquid discharge box is respectively provided with a first outlet and a second outlet corresponding to the water outlet and the hydrogen outlet. A partition plate is provided inside the liquid discharge box. A second cylinder is connected to one side of the partition plate. A slide rail is provided on the inner wall of the liquid discharge box. The partition plate is slidably matched with the slide rail. The side of the partition plate facing the first outlet and the second outlet is set as the liquid discharge area, and the side of the partition plate facing the second cylinder is set as the air outlet area.

[0011] According to the above technical solution, a pull plate is provided for the partition plate to cooperate with the first outlet. One end of the pull plate is slidably matched with the liquid discharge box, and a window corresponding to the first outlet is opened at the other end of the pull plate. A sealing plate is provided for the partition plate to cooperate with the second outlet.

[0012] According to the above technical solution, a bellows cover is provided on the upper side of the liquid discharge area. The bellows cover is respectively connected to the inner wall of the liquid discharge box and the partition plate to close the liquid discharge area from the outside. On the other side of the liquid discharge box relative to the first outlet, a confluence area is provided, and an air extraction device is externally connected to the confluence area.

[0013] According to the above technical solution, a placement rack and a protective cover are provided for the hydrogen filling machine to cooperate with the hydrogen filling gun. A cleaning component is provided on the protective cover.

[0014] According to the above technical solution, the cleaning component includes an outer cover which is rotatably arranged on the protective cover. The outer cover is of a hollow structure and is connected with a sponge block at the lower side. Teeth are arranged on the outer circumference of the upper side of the outer cover, and the teeth are connected with a driving gear in a matching manner. The driving gear is connected with a driver.

[0015] According to the above technical solution, several gas channels are arranged inside the sponge block. One end of each gas channel is opened and connected to the inside of the outer cover. Several flow guiding plates are arranged on the inner wall circumference of the outer cover, and the flow guiding plates are inclined.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, by providing an induction mechanism, the leakage state of the internal pipeline of the hydrogen filling machine can be detected, and it can be determined whether the leaked liquid is water or hydrogen. According to different situations, it is collected and discharged separately. The converging gas is adjusted according to the leakage state of hydrogen to reduce the concentration and avoid potential safety hazards. By providing a cleaning component, the liquid hydrogen at the muzzle of the hydrogen filling gun can be cleaned and dispersed, avoiding the accumulation of hydrogen and reducing the local hydrogen concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of the hydrogen filling machine of the present invention; Figure 2 is a schematic diagram of the partial structure of the hydrogen filling machine of the present invention; Figure 3 is a schematic diagram of the structure of the induction mechanism of the present invention; Figure 4 is a schematic diagram of the normal reception mode of the receiving component of the present invention; Figure 5 is a schematic diagram of the liquid water reception mode of the receiving component of the present invention; Figure 6 is a schematic diagram of the liquid hydrogen reception mode of the receiving component of the present invention; Figure 7 is a schematic diagram of the stepped shape of the receiving component of the present invention; Figure 8 is a schematic diagram of the installation position of the liquid discharge tank of the present invention; Figure 9 is a schematic diagram of the structure of the liquid discharge tank of the present invention; Figure 10 is a schematic diagram of the partial structure of the liquid discharge tank of the present invention; Figure 11 is a schematic diagram of the opening of the first outlet of the present invention; Figure 12 is a schematic diagram of the opening of the second outlet of the present invention; Figure 13 is a schematic diagram of the structure of the placement rack and the protective cover of the present invention; Figure 14 is a schematic diagram of the structure of the cleaning component of the present invention; Figure 15 is a cross-sectional view of the cleaning component of the present invention.

[0018] In the figure: 1. Hydrogen refueling machine; 11. Placing rack; 12. Protective cover; 2. Liquid hydrogen delivery pipeline; 3. Hydrogen refueling gun; 4. Induction mechanism; 41. Placing box; 411. Water outlet; 412. Hydrogen outlet; 42. Receiving component; 421. First cylinder; 422. First receiving plate; 423. Spring; 424. Second receiving plate; 425. Third receiving plate; 43. Induction layer; 44. Water collection layer; 45. Hydrogen collection layer; 5. Drainage tank; 51. First outlet; 52. Second outlet; 53. Partition board; 531. Pulling plate; 532. Window; 533. Sealing plate; 54. Second cylinder; 55. Slide rail; 56. Liquid outlet area; 57. Air outlet area; 58. Bellows cover; 59. Confluence area; 6. Cleaning component; 61. Outer cover; 611. Edge teeth; 612. Deflector; 62. Sponge block; 621. Gas channel; 63. Driving teeth; 64. Driver; 7. Breakaway valve; 8. Display. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-15 , the present invention provides a technical solution: an intelligent hydrogen refueling system for a hydrogen refueling station, including a hydrogen refueling machine 1. A liquid hydrogen delivery pipeline 2 is built in the hydrogen refueling machine 1 for transporting liquid hydrogen. The inlet end of the liquid hydrogen delivery pipeline 2 is externally connected to a liquid hydrogen storage tank for storing liquid hydrogen. The outlet end of the liquid hydrogen delivery pipeline 2 is connected to a hydrogen refueling gun 3 for connecting to the gas tank of a hydrogen energy vehicle. A liquid hydrogen delivery pipeline 2 is provided with an induction mechanism 4 below for receiving the liquid dripping from the liquid hydrogen delivery pipeline 2 and analyzing and collecting it.

[0021] As Figure 3 , Figure 4 shown, the induction mechanism 4 includes a placing box 41 with an open upper side. A plurality of receiving components 42 are closely arranged in the placing box 41. The receiving component 42 includes a first cylinder 421. The driving end of the first cylinder 421 is fixed with a first receiving plate 422. A pressure sensing module is laid on the surface of the first receiving plate 422. A spring 423 is connected below the first receiving plate 422. The other end of the spring 423 is connected to a second receiving plate 424. The surface of the fixed end of the first cylinder 421 is fixed with a third receiving plate 425.

[0022] Based on the above structure, the supplementary description is as follows: As Figure 4As shown, the receiving assembly 42 has three modes in total. The first is the normal receiving mode. At this time, the first receiving plate 422, the second receiving plate 424, and the third receiving plate 425 of each receiving assembly 42 correspond to each other and form three planar layers, namely the induction layer 43, the water collection layer 44, and the hydrogen collection layer 45 in sequence. The surface height of the first receiving plate 422 is lower than the surface height of the placement box 41.

[0023] Further, as Figure 5 shown, the second is the liquid water receiving mode. At this time, there is liquid water dripping on the liquid hydrogen delivery pipeline 2, which is locked to a specific receiving assembly 42 through the pressure sensing module. The corresponding first cylinder 421 controls the first receiving plate 422 to move down to the same height as the second receiving plate 424 of other receiving assemblies 42. At this time, the first receiving plate 422 is located in the water collection layer 44, and the dripping liquid water is restricted within the water collection layer 44.

[0024] Even further, as Figure 6 shown, the third is the liquid hydrogen receiving mode. At this time, there is liquid hydrogen dripping on the liquid hydrogen delivery pipeline 2, which is locked to a specific receiving assembly 42 through the pressure sensing module. The corresponding first cylinder 421 controls the second receiving plate 424 to move down to a state where it fits with the third receiving plate 425. At the same time, the first receiving plate 422 is located in the hydrogen collection layer 45, and the dripping liquid hydrogen is restricted within the hydrogen collection layer 45.

[0025] Optionally, corresponding magnetic attraction blocks and adsorption blocks are arranged on the sides of the first receiving plate 422, the second receiving plate 424, and the third receiving plate 425 for strengthening the connection.

[0026] On one side of the placement box 41, a water outlet 411 is provided corresponding to the water collection layer 44, and a hydrogen outlet 412 is provided corresponding to the hydrogen collection layer 45. Preferably, as Figure 7 shown, when the receiving assembly 42 detects a liquid signal and moves to the corresponding planar layer, in order to better drain the liquid to the corresponding outlet, the corresponding receiving plates of the remaining receiving assemblies 42 form a stepped slope, and the gradient low position faces the corresponding outlet, thereby helping the liquid to drain smoothly.

[0027] As Figure 8 、 Figure 9 shown, a liquid discharge box 5 is provided on one side of the hydrogen filling machine 1. The liquid discharge box 5 is respectively provided with a first outlet 51 and a second outlet 52 corresponding to the water outlet 411 and the hydrogen outlet 412. A partition plate 53 is arranged inside the liquid discharge box 5. One side of the partition plate 53 is connected with a second cylinder 54. A slide rail 55 is arranged on the inner wall of the liquid discharge box 5. The partition plate 53 is slidably matched with the slide rail 55. The side of the partition plate 53 facing the first outlet 51 and the second outlet 52 is set as a liquid discharge area 56, and the side of the partition plate 53 facing the second cylinder 54 is set as a wind outlet area 57.

[0028] As Figure 10As shown in the figure, a pull plate 531 is provided on the partition plate 53 in cooperation with the first outlet 51. One end of the pull plate 531 is slidably engaged with the drain tank 5, and a window 532 corresponding to the first outlet 51 is provided at the other end of the pull plate 531. A sealing plate 533 is provided on the partition plate 53 in cooperation with the second outlet 52.

[0029] Preferably, a bellows cover 58 is provided above the liquid outlet area 56. The bellows cover 58 is connected to the inner wall of the drain tank 5 and the partition plate 53 respectively to close the liquid outlet area 56 from the outside. A confluence area 59 is provided on the other side of the drain tank 5 relative to the first outlet 51, and an air extraction device is externally connected to the confluence area 59.

[0030] The supplementary description based on the above structure is as follows: As Figure 11 , Figure 12 shown, according to the moving position of the partition plate 53, different opening and closing states of the first outlet 51 and the second outlet 52 are realized. When the window 532 corresponds to the first outlet 51, at this time the sealing plate 533 closes the second outlet 52, and the liquid outlet area 56 is the area where liquid water flows out. When the partition plate 53 moves, the sealing plate 533 deviates from the second outlet 52, and the pull plate 531 closes the first outlet 51, and the liquid outlet area 56 is the area where liquid hydrogen flows out. The air outlet area 57 is used to introduce external air flow, which converges and mixes with liquid hydrogen or the already volatilized gaseous hydrogen to reduce the hydrogen concentration and avoid potential safety hazards. According to the moving position of the partition plate 53, the confluence gas ratio can be adjusted to adapt to different leakage amounts of liquid hydrogen.

[0031] As Figure 13 shown, the hydrogen filling machine 1 is provided with a placement rack 11 and a protective cover 12 in cooperation with the hydrogen filling gun 3, and a cleaning assembly 6 is provided on the protective cover 12.

[0032] As Figure 14 shown, the cleaning assembly 6 includes an outer cover 61. The outer cover 61 is rotatably arranged on the protective cover 12. The outer cover 61 is arranged as a hollow structure and a sponge block 62 is connected to the lower side. A side tooth 611 is arranged on the outer circumference of the upper side of the outer cover 61. The side tooth 611 is cooperatively connected with a driving tooth 63, and the driving tooth 63 is connected with a driver 64.

[0033] In actual operation, the sponge block 62 is used to clean the residual liquid hydrogen at the muzzle of the hydrogen filling gun 3. When the driver 64 is started, the side tooth 611 is driven to rotate by the driving tooth 63, so that the outer cover 61 drives the sponge block 62 to rotate, so that the sponge block 62 can fully contact the muzzle of the hydrogen filling gun 3.

[0034] In one embodiment, as Figure 15 shown, a plurality of gas channels 621 are arranged inside the sponge block 62. One end of the gas channels 621 is opened and connected into the outer cover 61, and several guide plates 612 are arranged on the inner wall circumference of the outer cover 61. The guide plates 612 are inclined.

[0035] It should be noted that: The liquid hydrogen absorbed by the sponge block 62 will evaporate inside. The gas channel 621 is used to lead out the gaseous hydrogen. When the outer cover 61 drives the flow guide plate 612 to rotate, the lower airflow will flow upward along the surface of the flow guide plate 612, so that the gaseous hydrogen in the gas channel 621 is evacuated, thus avoiding the continuous increase of the hydrogen concentration inside the outer cover 61.

[0036] Optionally, a camera and an electrostatic discharger are provided on one side of the hydrogen filling machine 1. The camera is used to photograph the vehicle, and the electrostatic discharger is used to eliminate the static electricity of the human body and the vehicle to be filled.

[0037] A pull - off valve 7 and a display 8 are provided on the hydrogen filling machine 1. The pull - off valve 7 is used to prevent accidental breakage of the pipeline, improving the safety of the hydrogen filling machine 1 during use. The display 8 is used to display relevant information during hydrogen filling, including filling volume, filling flow rate, price, filling temperature, etc.

[0038] The specific implementation method is as follows: Step 1: Identify the hydrogen - energy vehicle to be filled. The camera identifies the vehicle license plate and gives feedback to obtain vehicle information and tank information. Step 2: The staff checks the hydrogen - energy vehicle to be filled. The driver drives the hydrogen - energy vehicle to the filling parking space of the hydrogen filling machine 1. The staff checks the tank and connecting pipelines of the hydrogen - energy vehicle to ensure normal temperature and no air leakage. Step 3: Connect the hydrogen - energy vehicle to be filled and start filling. The staff adjusts the filling information according to the tank information, then uses the electrostatic discharger to eliminate their own static electricity, and then connects the static electricity connection clip on the electrostatic discharger to the tank area of the vehicle to be filled to eliminate the static electricity in this area, avoiding danger during the filling process due to static electricity. Finally, the staff connects the hydrogen filling gun 3 to the valve of the hydrogen energy tank and starts the hydrogen filling machine 1 to fill the tank. Step 4: During the filling process, the induction mechanism 4 detects the leakage situation. When there is liquid dripping on the surface of the upper - side liquid hydrogen delivery pipeline 2, record the mass after the liquid drips. After setting several unit times, check whether the total mass decreases. If it decreases, judge that the dripping liquid is liquid hydrogen; if there is no obvious change, the dripping liquid is liquid water. Step 5: Automatically update the filling information, confirm the information and make the payment. After the filling is completed, the staff removes the hydrogen filling gun 3 and the static electricity connection clip. The display 8 shows the filling information. After the staff manually updates the information according to the actual filling situation, the driver then confirms the information and makes the payment to complete this hydrogen energy filling.

[0039] Specifically, in step four, the temperature of liquid hydrogen is extremely low (about -253 °C). When it leaks into the normal temperature environment, it will quickly absorb the heat of the surrounding environment and vaporize. Therefore, if within a certain period of time, the total mass of the liquid dripping onto the surface of the receiving component 42 is less than the cumulative value, it is determined that the dripping liquid is liquid hydrogen. At this time, the corresponding first receiving plate 422 moves down to the hydrogen collection layer 45, and at the same time, the second outlet 52 is opened. Liquid hydrogen or partially vaporized gaseous hydrogen is led out from the hydrogen collection layer 45 to the liquid discharge tank 5. The main valve is closed, and the leakage location is locked for maintenance.

[0040] Furthermore, according to the dripping state of liquid hydrogen, the moving position of the partition plate 53 in the liquid discharge tank 5 is adjusted. The interval time between two pressure signals is set as T, and a comparison value t is introduced. When T > t, the leakage state of liquid hydrogen is within the controllable range. At this time, there is no need to close the main valve during the filling process. According to the T value, the proportion of the converging gas in the liquid discharge tank 5 is adjusted. The interval time is inversely proportional to the volume of the converging gas. That is, the shorter the interval between two pressure signals, the faster the leakage speed of liquid hydrogen and the higher the concentration. More gas needs to be introduced to reduce the concentration and discharge it. When T ≤ t, the leakage speed of liquid hydrogen is abnormal. At this time, the main valve needs to be immediately closed, the personnel are evacuated, and the gas inside the hydrogen filling station is forced to be ventilated and replaced, and then the staff is notified for maintenance.

[0041] If within a certain period of time, the total mass of the liquid dripping onto the surface of the receiving component 42 is almost the same as the cumulative value, it is determined that the dripping liquid is liquid water. At this time, the corresponding first receiving plate 422 moves down to the water collection layer 44, and at the same time, the first outlet 51 is opened. Liquid water is led out from the water collection layer 44 to the liquid discharge tank 5.

[0042] It should be noted that in this article, relational 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 relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent hydrogen refueling system for a hydrogen refueling station, including a hydrogen dispenser (1), characterized in that, The hydrogen refueling machine (1) is internally provided with a liquid hydrogen delivery pipeline (2). The inlet end of the liquid hydrogen delivery pipeline (2) is externally connected to a liquid hydrogen storage tank, the outlet end of the liquid hydrogen delivery pipeline (2) is connected to a hydrogen refueling gun (3), and an induction mechanism (4) is arranged on the lower side of the liquid hydrogen delivery pipeline (2). The induction mechanism (4) includes a placement box (41) with an open upper side. A plurality of receiving components (42) are closely arranged in the placement box (41). The receiving component (42) includes a first cylinder (421). A first receiving plate (422) is fixed to the driving end of the first cylinder (421). A pressure sensing module is laid on the surface of the first receiving plate (422). A spring (423) is connected to the lower side of the first receiving plate (422). The other end of the spring (423) is connected to a second receiving plate (424). A third receiving plate (425) is fixed to the surface of the fixed end of the first cylinder (421).

2. The intelligent hydrogen refueling system for a hydrogen refueling station according to claim 1, wherein, Under normal conditions, the first receiving plate (422), the second receiving plate (424), and the third receiving plate (425) of each receiving component (42) correspond to each other, forming three planar layers, namely an induction layer (43), a water collection layer (44), and a hydrogen collection layer (45) in sequence. The surface height of the first receiving plate (422) is lower than the surface height of the placement box (41).

3. An intelligent hydrogen refueling system for a hydrogen refueling station according to claim 2, characterized in that, One side of the placement box (41) is provided with a water outlet (411) corresponding to the water collection layer (44), and a hydrogen outlet (412) corresponding to the hydrogen collection layer (45).

4. An intelligent hydrogen refueling system for a hydrogen refueling station according to claim 3, characterized in that, A liquid discharge box (5) is arranged on one side of the hydrogen refueling machine (1). The liquid discharge box (5) is respectively provided with a first outlet (51) and a second outlet (52) corresponding to the water outlet (411) and the hydrogen outlet (412). A partition plate (53) is arranged in the liquid discharge box (5). A second cylinder (54) is connected to one side of the partition plate (53). A slide rail (55) is arranged on the inner wall of the liquid discharge box (5). The partition plate (53) is slidably matched with the slide rail (55). The side of the partition plate (53) facing the first outlet (51) and the second outlet (52) is set as a liquid discharge area (56), and the side of the partition plate (53) facing the second cylinder (54) is set as a wind outlet area (57).

5. The intelligent hydrogen refueling system of a hydrogen refueling station according to claim 4, characterized in that, The partition plate (53) is provided with a pull plate (531) in cooperation with the first outlet (51). One end of the pull plate (531) is slidably matched with the liquid discharge box (5), and a window (532) corresponding to the first outlet (51) is opened at the other end of the pull plate (531). The partition plate (53) is provided with a sealing plate (533) in cooperation with the second outlet (52).

6. The intelligent hydrogen refueling system of a hydrogen refueling station according to claim 5, characterized in that, A bellows cover (58) is arranged on the upper side of the liquid discharge area (56). The bellows cover (58) is respectively connected to the inner wall of the liquid discharge box (5) and the partition plate (53). A confluence area (59) is arranged on the other side of the liquid discharge box (5) relative to the first outlet (51). The confluence area (59) is externally connected to an air extraction device.

7. An intelligent hydrogen refueling system for a hydrogen refueling station according to claim 6, characterized in that, The hydrogen refueling machine (1) is provided with a placement rack (11) and a shield (12) in cooperation with the hydrogen refueling gun (3), and a cleaning assembly (6) is arranged on the shield (12).

8. The intelligent hydrogen refueling system for a hydrogen refueling station according to claim 7, wherein, The cleaning assembly (6) includes an outer cover (61), the outer cover (61) is rotatably arranged on the shield (12), the outer cover (61) is arranged in a hollow structure and a sponge block (62) is connected to the lower side, an edge tooth (611) is arranged on the outer circumference of the upper side of the outer cover (61), the edge tooth (611) is connected and matched with a driving tooth (63), and the driving tooth (63) is connected with a driver (64).

9. The intelligent hydrogen refueling system for a hydrogen refueling station according to claim 8, wherein, A plurality of gas channels (621) are arranged inside the sponge block (62), one end of each gas channel (621) is opened and connected into the outer cover (61), and several flow guide plates (612) are arranged on the inner wall circumference of the outer cover (61), and the flow guide plates (612) are arranged obliquely.

10. A hydrogenation method for an intelligent hydrogenation system of a hydrogen refueling station, applicable to the intelligent hydrogenation system of a hydrogen refueling station described in claim 9, characterized in that, The specific method is as follows: Step 1: Identify the hydrogen energy vehicle to be refueled. The camera identifies the vehicle license plate and gives feedback to obtain vehicle information and storage tank information. Step 2: The staff checks the hydrogen energy vehicle to be refueled. The driver drives the hydrogen energy vehicle to the refueling parking space of the hydrogen refueling machine (1). The staff checks the storage tank and the connecting pipeline of the hydrogen energy vehicle to ensure normal temperature and no air leakage. Step 3: Connect the hydrogen energy vehicle to be refueled and carry out refueling. The staff adjusts the refueling information according to the storage tank information, then uses an electrostatic discharger to eliminate their own static electricity, and then connects the static electricity wiring clip on the electrostatic discharger to the storage tank area of the vehicle to be refueled to eliminate the static electricity in this area and avoid danger during the refueling process due to the existence of static electricity. Finally, the staff connects the hydrogen refueling gun (3) to the valve of the hydrogen energy storage tank and starts the hydrogen refueling machine (1) to refuel the storage tank. Step 4: The induction mechanism (4) detects the leakage situation during the refueling process. When there is liquid dripping on the surface of the upper liquid hydrogen delivery pipeline (2), record the mass after the liquid drips. After setting several unit times, check whether the total mass decreases. If it decreases, it is judged that the dripping liquid is liquid hydrogen. If there is no obvious change, the dripping liquid is liquid water. Step 5: Automatically update the refueling information, confirm the information and make the payment. After the refueling is completed, the staff removes the hydrogen refueling gun (3) and the static electricity wiring clip. The display (8) shows the refueling information. After the staff manually updates the information according to the actual refueling situation, the driver then confirms the information and makes the payment to complete the hydrogen energy refueling this time.

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