Hydrogen filling system and hydrogen refueling station

Abstract

The invention relates to the technical field of hydrogen storage and transportation, and provides a hydrogen filling system and a hydrogen refueling station. The hydrogen filling system comprises a hydrogen production assembly, a first hydrogen storage assembly, a second hydrogen storage assembly and a hydrogen filling machine. Wherein a gas inlet of the hydrogen production assembly is communicated with a natural gas pipeline and is used for producing hydrogen; the first hydrogen storage assembly is communicated with a first gas outlet of the hydrogen production assembly and is used for storing hydrogen in an environment with first pressure intensity; the second hydrogen storage assembly is communicated with a second gas outlet of the hydrogen production assembly and is used for storing hydrogen in an environment with second pressure intensity; the hydrogen adding machine communicates with the first hydrogen storage assembly and the second hydrogen storage assembly and is used for outputting hydrogen. The hydrogen filling system and the hydrogen refueling station with the high hydrogen utilization rate have the advantages that the defects of low hydrogen storage efficiency and low utilization rate in a hydrogen refueling system in the prior art are overcome, in-station hydrogen production, high-pressure hydrogen storage and high-pressure refueling are realized, an effective means is provided for large-scale storage and transportation of hydrogen, and the operation from hydrogen production to terminal application is smoother.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage and transportation, and in particular to a hydrogen filling system and a hydrogen filling station. Background Art

[0002] As the world pays more and more attention to clean energy and reducing carbon emissions, hydrogen energy as a clean and efficient form of energy has received more and more attention. Hydrogen fuel cell vehicles use hydrogen and oxygen to react in fuel cells to generate electricity to drive the vehicle. The only emission is water, so it is considered to be a very environmentally friendly mode of transportation. A hydrogen refueling station is a facility that specializes in providing hydrogen fuel for hydrogen fuel cell vehicles.

[0003] The hydrogen in existing hydrogen refueling stations is generally derived from industrial byproduct hydrogen, which is transported using 20MPa long-tube trailers. After unloading, it is pressurized by compressors and stored in high, medium, and low hydrogen storage bottle groups. The compressor cannot increase all the gas, so some hydrogen will remain in the long-tube trailer, resulting in low hydrogen utilization. Hydrogen storage in the station is mainly 20MPa / 45MPa hydrogen storage bottles, and the hydrogen storage efficiency is low. Summary of the invention

[0004] The present invention provides a hydrogen filling system and a hydrogen filling station, which are used to solve the defects of low hydrogen storage efficiency and low utilization rate in the hydrogen filling system in the prior art, and realize the hydrogen filling system and hydrogen filling station with high hydrogen utilization rate, which can produce hydrogen in the station, store hydrogen under high pressure, and fill hydrogen under high pressure, and provide an effective means for the large-scale storage and transportation of hydrogen, so that the operation from hydrogen production to terminal application is smoother.

[0005] The present invention provides a hydrogen filling system, comprising: A hydrogen production component, wherein the gas inlet of the hydrogen production component is connected to the natural gas pipeline for producing hydrogen; a first hydrogen storage component, connected to the first gas outlet of the hydrogen production component, and used to store the hydrogen under a first pressure environment; a second hydrogen storage assembly, connected to the second gas outlet of the hydrogen production assembly, for storing the hydrogen under a second pressure environment; A hydrogen filling machine is connected to the first hydrogen storage assembly and the second hydrogen storage assembly, and is used to output the hydrogen.

[0006] According to a hydrogen filling system provided by the present invention, the first hydrogen storage component comprises: a first hydrogen compressor, connected to the first gas outlet of the hydrogen production assembly, for compressing the hydrogen to a first pressure; a first hydrogen storage component, in communication with the first hydrogen compressor, and configured to store the hydrogen in an environment of a first pressure; The first sequence control disk is connected between the first hydrogen compressor, the first hydrogen storage component and the hydrogenator, and is used to control the flow direction of the hydrogen.

[0007] According to a hydrogen filling system provided by the present invention, the second hydrogen storage component comprises: a second hydrogen compressor, connected to the first gas outlet of the hydrogen production assembly, for compressing the hydrogen to a second pressure; a second hydrogen storage component, in communication with the second hydrogen compressor, for storing the hydrogen in an environment of a second pressure; The second sequence control disk is connected between the second hydrogen compressor, the second hydrogen storage component and the hydrogenator, and is used to control the flow direction of the hydrogen.

[0008] According to a hydrogen filling system provided by the present invention, the first pressure includes 45 MPa, and the second pressure includes 90 MPa.

[0009] According to a hydrogen filling system provided by the present invention, the hydrogen production component comprises: A natural gas skid-mounted hydrogen production component, connected to the natural gas pipeline, for producing the hydrogen; A buffer tank, wherein the air inlet of the buffer tank is connected to the natural gas skid-mounted hydrogen production component, the first air outlet of the buffer tank is connected to the first hydrogen storage assembly, and the second air outlet of the buffer tank is connected to the second hydrogen storage assembly.

[0010] According to a hydrogen filling system provided by the present invention, the hydrogen filling machine includes a first gas transmission end and a second gas transmission end, and the pressures of the first gas transmission end and the second gas transmission end are different.

[0011] According to a hydrogen filling system provided by the present invention, the first hydrogen storage component and the second hydrogen storage component both include a supporting box and at least two hydrogen storage bottles, and the two hydrogen storage bottles are spaced apart inside the supporting box.

[0012] According to a hydrogen filling system provided by the present invention, the hydrogen storage bottle includes an inner liner, and an outer protective layer is provided on the outside of the inner liner.

[0013] According to a hydrogen filling system provided by the present invention, a reinforcement layer is provided between the outer protective layer and the inner tank.

[0014] The present invention also provides a hydrogen filling station, comprising the hydrogen filling system described in any one of the above embodiments.

[0015] The hydrogen filling system provided by the present invention avoids the inconvenience and waste caused by the use of external transportation tools, and instead adopts a method of on-site preparation and on-demand distribution, thereby effectively solving the problem of low utilization rate in traditional hydrogen filling stations due to the inability of the compressor to completely evacuate the residual hydrogen in the long-tube trailer, thereby greatly improving the efficiency and economic benefits of the entire system.

[0016] Furthermore, since the hydrogen filling station provided by the present invention includes the above-mentioned hydrogen filling system, it also has the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of the hydrogen filling system provided by the present invention.

[0019] Figure 2 It is a structural schematic diagram of a first hydrogen storage component and a second hydrogen storage component of a hydrogen filling system provided by the present invention.

[0020] Figure 3 It is a structural schematic diagram of a hydrogen storage bottle of a hydrogen filling system provided by the present invention.

[0021] Reference numerals: 100: Hydrogen production components; 110: Natural gas skid-mounted hydrogen production components; 120: Buffer tank; 200: first hydrogen storage assembly; 210: first hydrogen compressor; 220: first sequence control panel; 230: first hydrogen storage component; 231: mobile end bracket; 232: top plate; 233: ventilation pipeline; 234: fixed end bracket; 235: hydrogen storage bottle; 2351: bottle valve; 2352: external protective layer; 2353: reinforcement layer; 2354: liner; 236: side plate; 300: second hydrogen storage assembly; 310: second hydrogen compressor; 320: second sequence control panel; 330: second hydrogen storage component; 400: Hydrogenation machine; 510: The first hydrogen car; 520: The second hydrogen car. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0025] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0027] Combine the following Figure 1-Figure 3 The structure and working principle of the present invention are described.

[0028] Reference Figure 1 The hydrogen filling system provided by the present invention includes a hydrogen production component 100, a first hydrogen storage component 200, a second hydrogen storage component 300 and a hydrogen filling machine 400. The air inlet of the hydrogen production component 100 is connected to the natural gas pipeline for producing hydrogen; the first hydrogen storage component 200 is connected to the first air outlet of the hydrogen production component 100 for storing hydrogen under a first pressure; the second hydrogen storage component 300 is connected to the second air outlet of the hydrogen production component 100 for storing hydrogen under a second pressure; the hydrogen filling machine 400 is connected to the first hydrogen storage component 200 and the second hydrogen storage component 300 for outputting hydrogen.

[0029] In the above structure, the present invention realizes the whole process from hydrogen production to end-user use by integrating the hydrogen production component 100, the first hydrogen storage component 200, the second hydrogen storage component 300 and the hydrogen filling machine 400. First, the present invention directly uses the natural gas pipeline as the source of raw materials, and converts natural gas into hydrogen through the hydrogen production component 100. The produced hydrogen is respectively sent to the first hydrogen storage component 200 and the second hydrogen storage component 300 according to its pressure requirements, and then stored in different pressure environments. When it is necessary to refuel a vehicle or other equipment, the hydrogen filling machine 400 can extract hydrogen of the corresponding pressure level from the first hydrogen storage component 200 or the second hydrogen storage component 300 for supply according to actual needs.

[0030] Through the above settings, the present invention adopts the method of on-site preparation and on-demand distribution, thereby avoiding the inconvenience and waste caused by the use of external transportation tools, effectively solving the problem of low utilization rate in traditional hydrogen refueling stations due to the inability of the compressor to completely evacuate the residual hydrogen in the long tube trailer, and greatly improving the efficiency and economic benefits of the entire system.

[0031] Reference Figure 1 In some embodiments of the present invention, the first hydrogen storage assembly 200 includes a first hydrogen compressor 210, a first sequence control disk 220 and a first hydrogen storage component 230. The first hydrogen compressor 210 is connected to the first gas outlet of the hydrogen production assembly 100, and is used to compress the hydrogen to a first pressure; the first hydrogen storage component 230 is connected to the first hydrogen compressor 210, and is used to store hydrogen in an environment of the first pressure; the first sequence control disk 220 is connected between the first hydrogen compressor 210, the first hydrogen storage component 230 and the hydrogenator 400, and is used to control the flow direction of the hydrogen.

[0032] Specifically, the hydrogen produced by the hydrogen production component 100 first enters the first hydrogen compressor 210 through the first gas outlet of 100, where it is compressed to a predetermined first pressure. This process ensures that the hydrogen can be stored in the subsequent first hydrogen storage component 230 under appropriate density and pressure conditions, thereby meeting the requirements for hydrogen quality in specific applications. Next, the compressed hydrogen will be safely transferred to the first hydrogen storage component 230 for storage. The first hydrogen storage component 230 can ensure that the quality of the hydrogen will not be affected even after long-term storage. During the entire process, the first sequence control disk 220 controls the delivery of hydrogen. When the hydrogen compressed by the first hydrogen compressor 210 needs to be delivered to the first hydrogen storage component 230, and when the hydrogen in the first hydrogen storage component 230 needs to be delivered to the hydrogenator 400, both are operated through the first sequence control disk 220.

[0033] This design not only improves hydrogen utilization and reduces resource waste, but also enhances the flexibility and response speed of the system, enabling rapid adjustment of strategies in daily operations and in the face of emergencies, ensuring a continuous and stable supply of hydrogen, and providing users with a more reliable service experience.

[0034] In some embodiments of the present invention, the second hydrogen storage assembly 300 includes a second hydrogen compressor 310, a second sequence control disk 320 and a second hydrogen storage component 330. The second hydrogen compressor 310 is connected to the first gas outlet of the hydrogen production assembly 100, and is used to compress the hydrogen to a second pressure; the second hydrogen storage component 330 is connected to the second hydrogen compressor 310, and is used to store hydrogen in an environment of a second pressure; the second sequence control disk 320 is connected between the second hydrogen compressor 310, the second hydrogen storage component 330 and the hydrogenator 400, and is used to control the flow direction of the hydrogen.

[0035] Specifically, the hydrogen produced by the hydrogen production component 100 first enters the second hydrogen compressor 310 through the second outlet 100, where it is compressed to a pressure level different from that set by the first hydrogen storage component 200, namely the second pressure. This process ensures that more diverse and precisely matched hydrogen supply options can be provided according to the needs of actual application scenarios. Subsequently, the appropriately compressed hydrogen will be directed to the second hydrogen storage component 330 specially designed to maintain the specific second pressure environment for storage, ensuring that the hydrogen can remain in the best condition even in the face of long-term storage.

[0036] During the whole process, the second sequence control panel 320 plays a key role. It is not only responsible for coordinating the direction and rate of hydrogen flow from the second hydrogen compressor 310 to the second hydrogen storage component 330, but also serves as a connection point to closely connect the second hydrogen storage component 300 with the hydrogen filling machine 400, and dynamically adjusts the output and time of hydrogen according to the specific requirements in actual operation, thereby realizing efficient and flexible hydrogen distribution.

[0037] This embodiment not only enhances the adaptability of the system, enabling it to better serve various usage scenarios, but also greatly improves the efficiency of hydrogen utilization, reduces unnecessary energy consumption, and provides users with a more reliable, economical and environmentally friendly solution. In addition, by rationally planning the mutual cooperation mechanism between various components, the solution further improves the safety and stability of the overall system, making an important contribution to promoting the development of hydrogen energy technology.

[0038] In some specific embodiments, the first pressure is 45 MPa, the first hydrogen compressor 210 is a 45 MPa hydrogen compressor, the normal suction pressure of the first hydrogen compressor 210 is 5 MPa-20 MPa, and the rated exhaust pressure of the first hydrogen compressor 210 is 45 MPa. The first sequence control disk 220 is a 45 MPa sequence control disk, and the first hydrogen storage component 230 is a 45 MPa hydrogen storage component.

[0039] The second pressure is 90MPa, the second hydrogen compressor 310 is a 90MPa hydrogen compressor, the conventional suction pressure of the second hydrogen compressor 310 is 5MPa~20MPa, the rated exhaust pressure of the second hydrogen compressor 310 is 90MPa, the electric power of the second hydrogen compressor 310 is about 55kW, the second sequence control disk 320 is a 90MPa sequence control disk, and the second hydrogen storage component 330 is a 90MPa hydrogen storage component. The first hydrogen compressor 210 and the first sequence control disk 220 cool the hydrogen through a closed cooling system.

[0040] Reference Figure 1 In some embodiments of the present invention, the hydrogen production assembly 100 includes a natural gas skid-mounted hydrogen production component 110 and a buffer tank 120. The natural gas skid-mounted hydrogen production component 110 is connected to a natural gas pipeline and is used to produce hydrogen. The hydrogen production component 110 can crack natural gas into hydrogen at high temperature, and the purity of the hydrogen after purification reaches 99.99%. The air inlet of the buffer tank 120 is connected to the natural gas skid-mounted hydrogen production component 110.

[0041] In the above structure, the generated hydrogen is first introduced into the buffer tank 120, where the hydrogen undergoes a short but crucial dwelling stage. This step not only helps to smooth the hydrogen flow and reduce the impact of pressure fluctuations that may occur during the hydrogen production process on downstream equipment, but also provides a unified buffer area for hydrogen before entering different hydrogen storage paths. The buffer tank 120 is provided with an outlet, which is connected to two parallel outlet pipes. The two outlet pipes are connected to the first hydrogen storage assembly 200 and the second hydrogen storage assembly 300 one by one. According to actual needs, hydrogen is transported out from the outlet, and after further processing by the first hydrogen compressor 210 or the second hydrogen compressor 310 connected to each other, it finally reaches the hydrogen storage component of the specified pressure level.

[0042] In some embodiments of the present invention, the hydrogenator 400 includes a first gas transmission end and a second gas transmission end, and the pressures of the first gas transmission end and the second gas transmission end are different. That is, the hydrogenator 400 is a dual-pressure hydrogenator, specifically, the pressure of the first gas transmission end is 35Mpa, and the pressure of the second gas transmission end is 70Mpa. The first end is used to hydrogenate the first hydrogen car 510, and the first hydrogen car 510 is specifically a 70Mpa hydrogen car; the second end is used to hydrogenate the second hydrogen car 520, and the second hydrogen car 520 is specifically a 35Mpa hydrogen car. The hydrogenator 400 can automatically switch the gas source based on the instantaneous flow rate, and realizes the simultaneous filling of dual pressure levels of 35MPa and 70MPa.

[0043] Reference Figure 2 In some embodiments of the present invention, the first hydrogen storage component 230 includes a supporting box and at least two hydrogen storage bottles 235, and the hydrogen storage bottles 235 are arranged inside the supporting box at intervals.

[0044] In the above structure, the supporting box serves as the basic frame of the first hydrogen storage component 230, which not only provides solid physical protection to ensure that the internal hydrogen storage bottle 235 is protected from external environmental factors such as physical impact and extreme weather conditions, but also provides a stable installation platform for the hydrogen storage bottle 235. The hydrogen storage bottle 235 promotes air circulation and heat dissipation through reasonable spacing design, thereby reducing the potential safety hazards caused by excessive local temperature.

[0045] Specifically, the upper and lower surfaces of the supporting box are provided with a top plate 232, the front and rear surfaces are provided with side plates 236, and the left and right surfaces are provided with a movable end bracket 231 and a fixed end bracket 234, respectively, which can resist ultraviolet corrosion in the sun. A ventilation line 233 is also provided on the fixed end bracket 234. It should be noted that the ventilation line 233 can be used for air intake or air outlet. The ventilation line 233 is set in a one-to-one correspondence with the hydrogen storage bottle 235, and the ventilation line 233 is used to control the transportation of hydrogen in the hydrogen storage bottle 235. The interior of the hydrogen storage bottle 235 has three levels of low pressure, medium pressure and high pressure. When it is necessary to inflate the interior of the hydrogen storage bottle 235, the first sequence control disk 220 stores in the order of low pressure, medium pressure and high pressure. When it is necessary to output hydrogen, the first sequence control disk 220 takes gas from the interior of the hydrogen storage bottle 235 in the order of low pressure, medium pressure and high pressure.

[0046] Instruments and various valves are installed on the ventilation pipeline 233 to monitor key parameters such as pressure and temperature in the hydrogen storage bottle 235 in real time. Once an abnormal situation is found, an alarm can be triggered immediately or corresponding measures can be taken, further enhancing the safety protection capability of the system.

[0047] Reference Figure 2 In some embodiments of the present invention, the hydrogen storage bottle 235 includes an inner liner 2354, and an outer protective layer 2352 is provided outside the inner liner 2354. A reinforcing layer 2353 is provided between the outer protective layer 2352 and the inner liner 2354, and the hydrogen storage bottle 235 is also provided with a bottle valve 2351 for controlling the delivery of hydrogen inside the hydrogen storage bottle 235.

[0048] In the above structure, the hydrogen storage bottle 235 adopts a fully wrapped composite gas cylinder with an aluminum alloy liner (Type III bottle), which has the characteristics of light weight and high specific strength compared with steel gas cylinders (Type I bottles) and ring-wrapped metal liner gas cylinders (Type II bottles). The structural form adopts a multi-layer structure to ensure that it is both safe and efficient under high-pressure environments. The liner 2354, as the part that directly contacts the hydrogen, is made of corrosion-resistant materials with good sealing properties, such as aluminum alloy, which not only ensures the purity of the hydrogen but also prevents gas leakage. The aluminum alloy liner determines the size, volume, airtightness and other basic parameters of the composite gas cylinder, and acts as a core mold during winding, which is an important part of the overall design of the gas cylinder. The liner 2354 is wrapped with a reinforcement layer 2353 on the outside, which is the main load-bearing structure of the hydrogen storage bottle 235 and has a great relationship with the parameters such as the blasting performance and fatigue performance of the hydrogen storage bottle 235. The reinforcement layer 2353 is a composite material of high-strength fiber (such as carbon fiber) and epoxy resin. The high-strength carbon fiber is wound around the surface of the inner liner 2354 at a designed tension through circumferential winding and spiral winding using a winding process. The winding angle and thickness at the end cap will change. This composite material has excellent tensile strength and lightweight characteristics, can effectively disperse and withstand internal pressure, and ensure that the hydrogen storage bottle 235 can maintain structural integrity and stability even under extremely high pressure. The thickness of the reinforcement layer 2353 can be 40mm-50mm.

[0049] In addition to the reinforcement layer 2353, the hydrogen storage bottle 235 is also provided with an outer protective layer 2352, which can be specifically made of glass fiber. This layer not only provides additional physical protection against external impact and wear, but also has good weather resistance. The thickness of the outer protective layer 2352 can be 3mm-5mm.

[0050] In this embodiment, the outer protective layer 2352 and the inner liner 2354 are tightly connected by the reinforcing layer 2353 to form a solid whole. This multi-layer structure design not only improves the safety of the hydrogen storage bottle 235, but also extends its service life and reduces maintenance costs.

[0051] In some specific embodiments, the design pressure of the hydrogen storage bottle 235 is 99MPa, the working pressure is 90MPa, the volume is 1200L, the outer diameter of the straight barrel portion of the hydrogen storage bottle 235 is 540mm-550mm, the length is 6300mm-6320mm, and the working environment temperature is -40 to 60°C. The inner wall thickness of the middle barrel section is uniform, and there are no scratches on the inner and outer surfaces; both sides of the head adopt a closing structure, and the wall thickness gradually increases from the barrel to the bottle mouth, and there must be no overburning phenomenon to ensure the strength of the head part; the bottle mouth needs to be threaded and the smoothness of the thread must be ensured.

[0052] At room temperature, the hydrogen storage bottle 235 in this embodiment can achieve 41.7kg / m3 The hydrogen storage capacity is 1.5 times that of the 45MPa hydrogen storage pressure vessel in the prior art.

[0053] The working principles of the present invention in five situations are described below.

[0054] Case 1: The hydrogen in the buffer tank 120 is pressurized to 45 MPa by the first hydrogen compressor 210, and then stored in the first hydrogen storage component 230 through the first sequence control panel 220. During refueling, the 35 MPa pipeline (i.e., the first gas transmission end) in the hydrogenator 400 takes gas from the first hydrogen storage component 230, and refuels the 35 MPa hydrogen vehicle (i.e., the first hydrogen vehicle 510) through the first sequence control panel 220.

[0055] Case 2: The hydrogen in the buffer tank 120 is pressurized to 90 MPa by the second hydrogen compressor 310, and then stored in the second hydrogen storage component 330 through the second sequence control panel 320. During refueling, the 70 MPa pipeline (i.e., the second gas transmission end) in the hydrogenator 400 takes gas from the second hydrogen storage component 330, and refuels the 70 MPa hydrogen vehicle (i.e., the second hydrogen vehicle 520) through the second sequence control panel 320.

[0056] Case 3: When the pressure in the first hydrogen storage component 230 and the second hydrogen storage component 330 is insufficient, the corresponding vehicles can be directly refueled through the first hydrogen compressor 210 and the second hydrogen compressor 310 .

[0057] Case 4: When there is no hydrogen vehicle to refuel, the hydrogen in the buffer tank 120 is pressurized to 45 MPa by the first hydrogen compressor 210 and stored in the first hydrogen storage component 230 through the first sequence control panel 220. The first hydrogen compressor 210 automatically enters the circulation process and stops pressurizing.

[0058] Case 5: When there is no hydrogen vehicle to refuel, the hydrogen in the buffer tank 120 is pressurized to 90 MPa by the second hydrogen compressor 310 and stored in the second hydrogen storage component 330 through the second sequence control panel 320. The second hydrogen compressor 310 automatically enters the circulation process and stops pressurizing.

[0059] The present invention also provides a hydrogen filling station, comprising the hydrogen filling system of any one of the above embodiments.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen filling system, characterized in that: include: A hydrogen production component (100), wherein the gas inlet of the hydrogen production component (100) is connected to a natural gas pipeline and is used to produce hydrogen; A first hydrogen storage component (200) is communicated with a first gas outlet of the hydrogen production component (100) and is used to store the hydrogen in an environment of a first pressure; A second hydrogen storage component (300) is communicated with a second gas outlet of the hydrogen production component (100) and is used to store the hydrogen in an environment with a second pressure; The hydrogen filling machine (400) is in communication with the first hydrogen storage assembly (200) and the second hydrogen storage assembly (300), and is used to output the hydrogen.

2. The hydrogen filling system according to claim 1, characterized in that: The first hydrogen storage assembly (200) comprises: a first hydrogen compressor (210), connected to a first gas outlet of the hydrogen production assembly (100), and used for compressing the hydrogen to a first pressure; A first hydrogen storage component (230) is in communication with the first hydrogen compressor (210) and is used to store the hydrogen in an environment with a first pressure; A first sequence control panel (220) is connected between the first hydrogen compressor (210), the first hydrogen storage component (230) and the hydrogenator (400) and is used to control the flow direction of the hydrogen.

3. The hydrogen filling system according to claim 2, characterized in that: The second hydrogen storage assembly (300) comprises: a second hydrogen compressor (310), connected to the first gas outlet of the hydrogen production assembly (100), and used for compressing the hydrogen to a second pressure; A second hydrogen storage component (330) is in communication with the second hydrogen compressor (310) and is used to store the hydrogen in an environment with a second pressure; A second sequence control panel (320) is connected between the second hydrogen compressor (310), the second hydrogen storage component (330) and the hydrogenator (400) and is used to control the flow direction of the hydrogen.

4. The hydrogen filling system according to claim 3, characterized in that: The first pressure comprises 45 MPa, and the second pressure comprises 90 MPa.

5. The hydrogen filling system according to any one of claims 1 to 4, characterized in that: The hydrogen production assembly (100) comprises: A natural gas skid-mounted hydrogen production component (110), connected to the natural gas pipeline and used for producing the hydrogen; A buffer tank (120), wherein an air inlet of the buffer tank (120) is in communication with the natural gas skid-mounted hydrogen production component (110), a first air outlet of the buffer tank (120) is in communication with the first hydrogen storage assembly (200), and a second air outlet of the buffer tank (120) is in communication with the second hydrogen storage assembly (300).

6. The hydrogen filling system according to claim 5, characterized in that: The hydrogenator (400) comprises a first gas transmission end and a second gas transmission end, and the pressures of the first gas transmission end and the second gas transmission end are different.

7. The hydrogen filling system according to claim 3, characterized in that: The first hydrogen storage component (230) and the second hydrogen storage component (330) both comprise a supporting box and at least two hydrogen storage bottles (235), wherein the two hydrogen storage bottles (235) are arranged at intervals inside the supporting box.

8. The hydrogen filling system according to claim 7, characterized in that: The hydrogen storage bottle (235) comprises an inner liner (2354), and an outer protective layer (2352) is provided on the outside of the inner liner (2354).

9. The hydrogen filling system according to claim 8, characterized in that: A reinforcement layer (2353) is provided between the outer protective layer (2352) and the inner liner (2354).

10. A hydrogen refueling station, characterized in that: Comprising the hydrogen filling system as described in any one of claims 1-9.

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