A low-pressure solid-state hydrogen storage-based scattered hydrogen collection and transportation vehicle

Abstract

This invention discloses a scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage, comprising a vehicle body, a hydrogen storage compartment and a secondary compartment, an installation frame, a shock-absorbing component, a hydrogen interface and pretreatment component, a thermal management component, and an intelligent control module. The installation frame has multiple assembly slots, each containing a sliding support component with a hydrogen storage module mounted on it. A shock-absorbing component is installed between the installation frame and the bottom wall of the hydrogen storage compartment. The secondary compartment contains a hydrogen interface and pretreatment component. The hydrogen storage compartment contains a thermal management component. The intelligent control module, based on a PLC main controller and a sensor array, enables automatic identification of multi-source hydrogen interfaces, automatic adjustment of hydrogen absorption and desorption rates, temperature safety interlocking, and remote monitoring and scheduling. This invention solves the problem of economical collection and safe transportation of scattered low-pressure hydrogen in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of hydrogen energy storage and transportation technology, specifically to a scattered hydrogen collection and transportation vehicle based on low-pressure solid hydrogen storage. Background Technology

[0002] Hydrogen, as a clean energy carrier, is produced in large quantities during processes such as water electrolysis, industrial byproducts (chlor-alkali, coke oven gas, etc.), and chemical hydrogenation. However, a large amount of hydrogen is wasted through venting or combustion due to the following reasons: for example, the amount of hydrogen produced during electrolyzer testing and MEA performance verification is small and the pressure is low, making its compression and collection economically unfeasible; industrial byproduct hydrogen is dispersed across multiple factories and locations, making pipeline transportation impractical, and high-pressure transportation after compression poses significant safety risks; furthermore, the amount of hydrogen produced in laboratories and small-scale hydrogen source equipment ranges from a few grams to tens of kilograms, and existing high-pressure hydrogen storage equipment (20MPa / 35MPa / 70MPa) has poor capacity matching and is too costly.

[0003] It is estimated that China wastes more than 200,000 tons of hydrogen annually through venting and combustion, resulting in an economic loss of approximately 1 billion yuan. Therefore, the current situation of hydrogen venting and waste is serious, and its collection and recycling are urgently needed.

[0004] Existing hydrogen collection and transportation schemes and their limitations: (1) High-pressure compression hydrogen storage and transportation: Traditional methods use 20-35MPa high-pressure compressors to compress hydrogen gas and then transport it via long-tube trailers. Its limitations include: A high-pressure compressor is required (investment of 500,000-1,000,000 RMB per unit), and it is only suitable for hydrogen volumes ≥1000 Nm³. 3 / h's concentrated scenarios; High-voltage operation poses significant safety risks and must comply with multiple safety standards, including GB / T35244. It is not economically feasible to collect low-pressure, low-flow, and scattered hydrogen. (2) Liquid hydrogen transportation: requires an extremely low temperature environment of -253°C. The energy consumption of liquefaction accounts for about 30-40% of the calorific value of hydrogen. It is only suitable for large-scale long-distance transportation and is not suitable for the collection of scattered hydrogen. (3) Pipeline transportation: large fixed investment, requires stable and large hydrogen source, and is difficult to cover scattered and fragmented scenarios; (4) Existing solid-state hydrogen storage technology: Domestic and foreign research on solid-state hydrogen storage focuses on stationary hydrogen storage devices and high-pressure solid-state hydrogen storage. There is no dedicated vehicle system for collecting and transporting low-pressure scattered hydrogen. T / CAB0259-2021 only specifies the transportation of magnesium-based solid-state hydrogen storage (≤0.1MPa), but magnesium-based alloys have an operating temperature of 300-350°C and require external heating, which is not suitable for near-room temperature scenarios.

[0005] Based on this, the present invention is proposed. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage, thereby solving the problem of the difficulty in economically collecting and safely transporting scattered low-pressure hydrogen as mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage includes a vehicle body, on which a hydrogen storage compartment and a secondary compartment are provided, and further includes: The mounting frame is provided with multiple assembly slots, each assembly slot is provided with a sliding support assembly, and the sliding support assembly is provided with a hydrogen storage module. A shock-absorbing assembly is provided between the mounting frame and the bottom wall of the hydrogen storage compartment to support the mounting frame; Hydrogen interface and pretreatment components are provided inside the secondary compartment for conveying hydrogen and pretreating it. A thermal management component is installed on the hydrogen storage compartment to control the temperature during hydrogen absorption and release; The intelligent control module, based on a PLC main controller and a sensor group, enables automatic identification of multi-source hydrogen interfaces, automatic adjustment of hydrogen absorption and desorption rates, temperature safety interlocking, and remote monitoring and scheduling. A safety protection module is used to monitor hydrogen leaks and perform emergency depressurization.

[0008] To support and secure the hydrogen storage module in its relative position within the assembly tank, the sliding support assembly includes: Each of the assembly slots has two guide rails symmetrically and fixedly installed inside it; Each hydrogen storage module has two rollers rotatably mounted on each side of its bottom, and the rollers are in rolling contact with the guide rail. A locking block is fixedly installed at the bottom of each hydrogen storage module, and locking interfaces are symmetrically opened on the locking block; A locking mechanism is provided inside each of the assembly slots to fix the hydrogen storage module by means of the locking block.

[0009] To secure the hydrogen storage module in place, the locking mechanism includes: The locking bracket is provided in each of the assembly slots. Several locking brackets correspond one-to-one with several locking blocks. A connecting rod is rotatably provided inside the locking bracket. A handle is fixedly provided at one end of each connecting rod away from the center position of the locking bracket. The locking bracket has two locking tongues that are symmetrically and slidably arranged inside. The locking tongues are adapted to the locking interface. Each locking tongue is fixedly provided with a rack. The two racks inside each locking bracket are slidably engaged with the locking bracket. The transmission gear is rotatably mounted inside each of the locking brackets, and the transmission gear meshes with the rack; A first helical gear and a second helical gear are coaxially fixedly mounted on each of the transmission gears, and a second helical gear is coaxially fixedly mounted on each of the connecting rods. The first helical gear meshes with the second helical gear.

[0010] To support the mounting frame, the shock absorption assembly includes: The shock-absorbing base plate is fixedly installed between the bottom wall of the hydrogen storage vehicle compartment and the mounting frame. The shock-absorbing base plate consists of three layers from top to bottom: a rubber pad, a steel plate, and a silicone pad. The limiting brackets are fixedly installed at the four corners of the mounting frame, and each limiting bracket is provided with a rubber block.

[0011] To facilitate the input and output of hydrogen, the hydrogen interface and pretreatment components include: Mounting partitions are provided inside each of the assembly slots; The hydrogen storage module has an inlet quick-connect male connector and an outlet quick-connect male connector. The inlet and outlet ends of the hydrogen storage module are respectively connected to the inlet quick-connect male connector and the outlet quick-connect male connector. The mounting plate has an inlet quick-connect female connector and an outlet quick-connect female connector. The inlet quick-connect male connector and the inlet quick-connect female connector are compatible, and the outlet quick-connect male connector and the outlet quick-connect female connector are compatible. An air inlet hose and an air outlet hose, wherein the air inlet hose is connected to a plurality of air inlet quick-connect female connectors through an air inlet network, and the air outlet hose is connected to a plurality of air outlet quick-connect female connectors through an air outlet network. A gas delivery mechanism is provided inside the secondary compartment to deliver hydrogen to the intake hose.

[0012] The gas delivery mechanism includes: An air supply pipe is connected to three quick connectors, and the output end of the air supply pipe is connected to a T-connector. The pressure regulating buffer tank and the pretreatment unit are respectively connected to the input end of the pressure regulating buffer tank and the input end of the pretreatment unit, and the output end of the pretreatment unit is connected to the air inlet hose. An exhaust pipe is provided, with the output end of the exhaust hose connected to the exhaust pipe and the output end of the exhaust pipe connected to an exhaust connector.

[0013] To control the temperature of the hydrogen storage module, the thermal management component includes: A fan is installed on the hydrogen storage compartment; The hydrogen storage module has a liquid inlet male connector and a liquid outlet male connector, and the liquid inlet end and the liquid outlet end are respectively connected to the liquid inlet male connector and the liquid outlet male connector. The mounting partition is equipped with a liquid inlet female connector and a liquid outlet female connector. The liquid inlet male connector and the liquid inlet female connector are compatible, and the liquid outlet male connector and the liquid outlet female connector are compatible. The inlet hose and outlet hose are provided. The inlet hose is connected to a number of inlet quick-connect female connectors through an inlet pipe network, and the outlet hose is connected to a number of outlet quick-connect female connectors through an outlet pipe network.

[0014] Furthermore, it also includes: Liquid supply connector and liquid drain connector, both of which are fixedly installed on the secondary carriage; The system includes a supply pipe and a drain pipe. The supply connector is connected to the inlet hose via the supply pipe, and the outlet hose is connected to the drain connector via the drain pipe.

[0015] Among them, the safety protection module has 8 catalytic combustion H2 sensors distributed in key locations inside the vehicle, with 1% LEL threshold alarm and 5% LEL threshold linkage for emergency pressure relief; The manifold pressure relief valve opens at a pressure of 5.1 MPa, and the pressure relief outlet is led to the top of the car body for venting via a flame arrester; All electrical components are of the ExdIIBT4 explosion-proof rating; The vehicle is equipped with an electrostatic grounding device and a nitrogen purging system.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides a scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage, which has the following beneficial effects: 1. In this invention, the rollers at the bottom of the hydrogen storage module roll in conjunction with the guide rails in the assembly slot, resulting in low resistance during insertion. This allows for operation by a single person. The locking mechanism enables the simultaneous insertion or disengagement of two locking tongues into or out of the locking interface on the locking block, achieving synchronous locking or unlocking of the hydrogen storage module in six directions: up / down, left / right, and front / back. The entire loading and unloading process requires no bolt tools, making operation simple. The replacement time for a single hydrogen storage module can be controlled within 5 minutes, significantly improving the efficiency of vehicle relocation between different collection tasks. It also avoids the thread wear problem caused by repeated disassembly and reassembly of traditional bolted connections.

[0017] 2. In this invention, by setting up a multi-source hydrogen interface and pretreatment components, hydrogen from different sources and of different qualities can be uniformly connected and purified. The three quick connectors connected to the gas supply pipe are respectively adapted to a small laboratory hydrogen source, an electrolytic cell test exhaust port, and an industrial by-product hydrogen pipeline. Each connector is equipped with a mechanical coding identification pin. The PLC can automatically identify the hydrogen source type and match the pretreatment parameters. After the hydrogen is diverted through the three-way connector, it enters the pressure regulating buffer tank for pressure fluctuation smoothing and the pretreatment unit for multi-stage purification. The pretreatment unit purifies the hydrogen by series purification through a deoxygenation unit, a dehydration unit, a CO / CO2 removal unit, and a precision filter, reducing the impurity content in the hydrogen to below the acceptable safety threshold of the hydrogen storage alloy. The outlet of the pretreatment unit is also equipped with an online purity analyzer and a trace impurity detection sensor to monitor the quality of the purified hydrogen in real time. If it is unqualified, the inlet valve is automatically closed and an alarm is triggered, effectively preventing the hydrogen storage alloy from failing due to impurity poisoning or oxidation, and extending the service life of the hydrogen storage module.

[0018] 3. In this invention, the shock-absorbing base plate adopts a three-layer composite structure consisting of an upper high-damping rubber pad, a middle steel plate, and a lower silicone pad. These layers attenuate high-frequency vibrations, reflect mid-frequency vibrations, and absorb low-frequency impacts, respectively, achieving a comprehensive shock absorption efficiency of over 80%. The limiting brackets at the four corners of the mounting frame have gaps between them and the side walls of the vehicle body, which are filled with rubber blocks. When the vehicle turns or brakes suddenly, the rubber blocks provide lateral buffering and limiting, preventing the frame from swinging significantly. These shock-absorbing structures work independently and synergistically to effectively protect the stability and safety of the hydrogen storage module and pipeline joints during vehicle operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure in this application; Figure 2 This is a schematic diagram of the overall structure from another angle in this application; Figure 3 This is a structural schematic diagram showing the cooperation between the hydrogen storage compartment, the secondary compartment, the sliding support assembly, and the hydrogen storage module in this application; Figure 4This is a cross-sectional structural diagram showing the interaction between the hydrogen storage compartment, the secondary compartment, the sliding support assembly, the hydrogen storage module, the hydrogen interface, the pretreatment assembly, and the thermal management assembly in this application. Figure 5 For this application Figure 4 A magnified schematic diagram of the local structure at point A; Figure 6 This is a schematic cross-sectional view of the hydrogen storage compartment, mounting frame, hydrogen storage module and shock absorption components in this application. Figure 7 This is a cross-sectional structural diagram showing the interaction between the hydrogen interface and the pretreatment components, the hydrogen storage compartment, and the secondary compartment in this application. Figure 8 This is a cross-sectional structural diagram showing the interaction between the hydrogen interface and the pretreatment components, thermal management components, mounting frame, and hydrogen storage module in this application. Figure 9 This is a cross-sectional structural diagram showing the cooperation of the mounting frame, assembly tank, hydrogen storage module and sliding support assembly in this application; Figure 10 This is a cross-sectional structural diagram showing the fit between the mounting frame, assembly slot, and sliding support assembly in this application. Figure 11 This is a cross-sectional structural diagram of the locking mechanism in this application; Figure 12 This is a schematic diagram of the hydrogen storage module in this application; Figure 13 This is a schematic diagram of the thermal management component in this application; Figure 14 This is a schematic diagram of the hydrogen interface and pretreatment components in this application; Figure 15 This is a schematic diagram of the hydrogen interface and pretreatment components from another angle in this application.

[0020] In the diagram: 1. Transport vehicle body; 2. Hydrogen storage compartment; 3. Secondary compartment; 4. Mounting frame; 5. Assembly tank; 6. Hydrogen storage module; 101. Guide rail; 102. Roller; 103. Locking block; 104. Locking interface; 105. Locking bracket; 106. Connecting rod; 107. Handle; 108. Locking tongue; 109. Rack; 110. Transmission gear; 111. First helical gear; 112. Second helical gear; 201. Shock-absorbing base plate; 20101. Rubber pad; 20102. Steel plate; 20103. Silicone pad; 202. Limiting bracket; 203. Rubber block; 301. Install partition; 302. Male quick-connect fitting for air intake; 303. Male quick-connect fitting for air exhaust; 304. Female quick-connect fitting for air intake; 305. Female quick-connect fitting for air exhaust; 306. Air intake hose; 307. Air exhaust hose; 308. Air supply hose; 309. Quick connector; 310. T-connector; 311. Pressure regulating buffer tank; 312. Pretreatment unit; 313. Exhaust pipe; 314. Exhaust connector; 315. Air intake network; 316. Air exhaust network; 401. Fan; 402. Male quick-connect fitting for liquid inlet; 403. Male quick-connect fitting for liquid outlet; 404. Female quick-connect fitting for liquid inlet; 405. Female quick-connect fitting for liquid outlet; 406. Liquid inlet hose; 407. Liquid outlet hose; 408. Liquid supply connector; 409. Drain connector; 410. Liquid supply pipe; 411. Drain pipe; 412. Liquid inlet network; 413. Liquid outlet network. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1

[0023] Please see Figures 1 to 15 A scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage includes a vehicle body 1, on which a hydrogen storage compartment 2 and a secondary compartment 3 are installed. It also includes a mounting frame 4, a shock absorption assembly, a hydrogen interface and pretreatment assembly, a thermal management assembly, an intelligent control module, and a safety protection module. The mounting frame 4 has multiple assembly slots 5, each containing a sliding support assembly. A hydrogen storage module 6 is mounted on each sliding support assembly. Figures 10 to 12 As shown, the sliding support assembly includes a guide rail 101, rollers 102, locking blocks 103, and a locking mechanism. Each assembly slot 5 has two guide rails 101 symmetrically and fixedly installed inside. Each hydrogen storage module 6 has two rollers 102 rotatably installed on each side of its bottom. The rollers 102 roll in contact with the guide rails 101. Each hydrogen storage module 6 has a locking block 103 fixedly installed at its bottom. The locking blocks 103 have symmetrically opened locking interfaces 104. Each assembly slot 5 has a locking mechanism installed inside, which is used to fix the hydrogen storage module 6 through the locking blocks 103.

[0024] Among them, hydrogen storage module 6 uses a near-room temperature medium-low plateau pressure (0.001MPa-3MPa) hydrogen storage alloy as the hydrogen storage medium, and its key technical parameters meet the following requirements: Alloy type: Rare earth AB5 type, Ti AB2 type or AB type hydrogen storage alloy; Platform pressure: At 25°C, the PCT platform pressure range of the hydrogen storage alloy is 0.001-3 MPa; Hydrogen storage capacity: mass hydrogen storage density 1.2-2.2 wt.%, volumetric hydrogen storage density ≥30 kgH2 / m³ 3 ; Hydrogen absorption kinetics: Under conditions of 25℃ and 5MPa, the hydrogen absorption capacity reaches 80% of the saturation capacity within 30 minutes; Hydrogen release kinetics: Under conditions of 25℃ and 0.1MPa, the hydrogen release reaches 70% of the saturation capacity within 30 minutes; Cycle life: Capacity decay ≤10% after 500 complete hydrogen adsorption / desorption cycles.

[0025] Hydrogen storage module 6 design: The hydrogen storage module 6 is set as a single tank, which can be composed of a cylindrical or square aluminum alloy shell and a heat exchange structure. The specific dimensions can be designed and adjusted according to the hydrogen storage capacity and hydrogen storage pressure. The hydrogen storage module 6 has a filter at the hydrogen outlet to prevent alloy powder from flowing out with the hydrogen flow; Single tank valves: Each hydrogen inlet and outlet is equipped with a check valve + manual shut-off valve; Modular design advantages: The number of array modules can be flexibly configured according to the collection task, realizing flexible scheduling of "small quantity multiple times" or "large quantity centralized".

[0026] When installing the hydrogen storage module 6, first open the hydrogen storage compartment 2. The operator aligns the hydrogen storage module 6 with the assembly slot 5 and pushes it forward. The roller 102 at the bottom of the hydrogen storage module 6 contacts the guide rail 101 in the assembly slot 5 and rolls along the guide rail 101. The cooperation between the roller 102 and the guide rail 101 constrains the hydrogen storage module in the left and right directions during the pushing process, thereby preventing the module from shifting significantly laterally and playing a guiding and automatic centering role.

[0027] When the hydrogen storage module 6 is pushed into the predetermined position, the locking block 103 at its bottom is exactly in the working area of ​​the locking mechanism. At this time, the locking mechanism can fix the hydrogen storage module 6 in this position through the locking interface 104 on the locking block 103. The locking interface 104 has multiple force-bearing surfaces. After the locking mechanism is engaged with the locking interface 104 from multiple directions at the same time, the hydrogen storage module 6 cannot move in six directions: up and down, left and right, and front and back, thereby ensuring that the hydrogen storage module 6 remains stable under vehicle driving and vibration conditions.

[0028] The locking mechanism includes a locking bracket 105, a locking tongue 108, a transmission gear 110, a first helical gear 111, and a second helical gear 112, as follows: Figure 11As shown, each assembly slot 5 is equipped with a locking bracket 105, and several locking brackets 105 correspond one-to-one with several locking blocks 103. A connecting rod 106 is rotatably arranged inside the locking bracket 105. A handle 107 is fixedly arranged at one end of each connecting rod 106 away from the center of the locking bracket 105. Two locking tongues 108 are symmetrically and slidably arranged inside the locking bracket 105. The locking tongues 108 are adapted to the locking interface 104. A rack 109 is fixedly arranged on each locking tongue 108. The two racks 109 inside each locking bracket 105 are slidably engaged with the locking bracket 105. A transmission gear 110 is rotatably installed inside each locking bracket 105. The transmission gear 110 meshes with the rack 109. A first helical gear 111 is coaxially fixedly arranged on each transmission gear 110. A second helical gear 112 is coaxially fixedly arranged on each connecting rod 106. The first helical gear 111 meshes with the second helical gear 112.

[0029] When it is necessary to fix the hydrogen storage module 6 inside the assembly tank 5, the operator turns the handle 107. The handle 107 drives the connecting rod 106 to rotate. The second helical gear 112 on the connecting rod 106 rotates with the connecting rod 106. The second helical gear 112 drives the first helical gear 111 to rotate. The first helical gear 111 is coaxially fixed with the transmission gear 110. The transmission gear 110 rotates together with the first helical gear 111. The transmission gear 110 meshes with the rack 109. The rack 109 is fixedly connected to the locking tongue 108. Thus, the setting of the rack 109 pushes the locking tongue 108 to slide.

[0030] The locking bracket 105 has two locking tongues 108 inside, symmetrically distributed on both sides. When the transmission gear 110 rotates, both locking tongues 108 extend or retract simultaneously. When the locking tongues 108 extend outward, they insert into the locking interface 104 at the bottom of the hydrogen storage module 6. The locking interface 104 is symmetrically located on both sides of the locking block 103. After the two locking tongues 108 are inserted simultaneously, they lock the locking block 103 from both left and right directions. This method of simultaneous force from both sides ensures that the hydrogen storage module 6 is subjected to a uniform clamping force. The module will not tilt or wobble due to force on one side.

[0031] To unlock, the operator rotates handle 107 in the opposite direction. The transmission process is the same as during locking, but in the opposite direction. Both locking tongues 108 retract simultaneously, disengaging from the locking interface 104. The hydrogen storage module 6 can then be pulled out along the guide rail 101.

[0032] A shock-absorbing assembly is installed between the mounting frame 4 and the inner bottom wall of the hydrogen storage compartment 2 to support the mounting frame 4, such as... Figures 4 to 6As shown, the shock absorption assembly includes a shock absorption base plate 201 and a limiting bracket 202. The shock absorption base plate 201 is fixedly installed between the bottom wall of the hydrogen storage compartment 2 and the mounting frame 4. The shock absorption base plate 201 consists of a three-layer structure from top to bottom, namely a rubber pad 20101, a steel plate 20102, and a silicone pad 20103. Limiting brackets 202 are fixedly installed at each of the four corners of the mounting frame 4, and rubber blocks 203 are installed on each of the limiting brackets 202.

[0033] The damping base plate 201 includes a three-layer damping structure: The upper layer consists of a high-damping rubber pad 20101 (Shore hardness 60HA, thickness 10mm), a middle layer of steel plate 20102 (thickness 3mm), and a lower layer of shock-absorbing silicone pad 20103 (Shore hardness 40HA, thickness 15mm). The three-layer structure attenuates high-frequency vibration (upper layer), mid-frequency vibration (middle layer reflection), and low-frequency impact (lower layer), respectively, with a comprehensive damping efficiency of ≥80%. The frame is equipped with lateral limiting brackets 202 at the four corners. A 5mm gap is left between the brackets and the side wall of the carriage and filled with high damping rubber blocks 203. The frame 4 is fixed on the high damping rubber pad 20101 by anchor bolts. Under normal working conditions, the frame moves synchronously with the vehicle body. When the vehicle turns or brakes suddenly, the rubber blocks 203 provide lateral buffering and limiting to prevent the frame from swinging too much and causing the pipe joints to loosen. These two structural components work together: the shock-absorbing base plate 201 handles vertical vibrations, and the limiting bracket 202 controls lateral swaying. This three-dimensional shock absorption and positioning method can effectively protect the hydrogen storage module 6 and the pipeline system, ensuring that the hydrogen storage module 6 remains stable during vehicle operation and improving the overall safety and reliability of the system.

[0034] The interior of the secondary compartment 3 is equipped with a hydrogen inlet and pretreatment components for supplying and pretreating hydrogen, such as... Figures 7 to 10 , Figure 12 , Figure 14 and Figure 15 As shown, the hydrogen interface and pretreatment assembly includes a mounting partition 301, an inlet quick-connect male connector 302, an outlet quick-connect male connector 303, an inlet hose 306, an outlet hose 307, and a gas delivery mechanism. Each assembly slot 5 is equipped with a mounting partition 301. The inlet and outlet ends of the hydrogen storage module 6 are respectively connected to the inlet quick-connect male connector 302 and the outlet quick-connect male connector 303. An inlet quick-connect female connector 304 and an outlet quick-connect female connector are mounted on the mounting partition 301. The head 305 is compatible with the male and female quick-connect fittings 302 and 304 for air intake, and the male and female quick-connect fittings 303 and 305 for air exhaust. The air intake hose 306 is connected to several female quick-connect fittings 304 via the air intake network 315, and the air exhaust hose 307 is connected to several female quick-connect fittings 305 via the air exhaust network 316. The secondary compartment 3 is equipped with a gas delivery mechanism to deliver hydrogen to the air intake hose 306.

[0035] When the operator pushes the hydrogen storage module 6 into the assembly tank 5, the male inlet quick-connect connector and the male outlet quick-connect connector 303 at the rear end of the hydrogen storage module will move forward with the module. When the hydrogen storage module is pushed into the predetermined position, the male inlet quick-connect connector 302 connects with the female inlet quick-connect connector 304 on the mounting partition 301, and the male outlet quick-connect connector 303 connects with the female outlet quick-connect connector 305. Both the male and female connectors have a spring sealing structure inside. When connecting, the male connector is inserted into the female connector, and the spring valve cores of the two connectors push against each other to form a through flow channel. Hydrogen can enter or exit the hydrogen storage module 6 through this flow channel.

[0036] When the operator pulls out the hydrogen storage module 6, the male and female connectors separate, and the spring valve cores at both ends reset, sealing their respective openings, thus preventing hydrogen leakage.

[0037] One end of the air inlet hose 306 is connected to the gas delivery mechanism, and the other end of the air inlet hose 306 is connected to each air inlet quick-connect female connector 304 through the air inlet pipeline network 315. The gas delivery mechanism sends external hydrogen into the air inlet hose 306, and then distributes it to each air inlet quick-connect female connector 304 through the air inlet pipeline network 315. When the hydrogen storage module 6 is connected, the hydrogen can enter the module.

[0038] For gas output, each quick-connect female outlet 305 is connected to the gas output hose 307 via the gas output pipeline network 316. When the hydrogen storage module 6 releases hydrogen, the hydrogen flows out of the module, passes through the quick-connect female outlet 305, the gas output pipeline network 316 and the gas output hose 307, and is finally delivered to the external hydrogen-using equipment.

[0039] The gas delivery system includes a gas supply pipe 308, a pressure regulating buffer tank 311, a pretreatment unit 312, and an exhaust pipe 313, such as Figure 14 , Figure 15 As shown, the air supply pipe 308 is connected to three quick connectors 309. The output end of the air supply pipe 308 is connected to a three-way connector 310. The three-way connector 310 is connected to the input end of the pressure regulating buffer tank 311 and the input end of the pretreatment unit 312, respectively. The pressure regulating buffer tank 311 has a volume of 5-20L (selected according to vehicle model level). The output end of the pretreatment unit 312 is connected to the air intake hose 306. The output end of the air outlet hose 307 is connected to the exhaust pipe 313. The output end of the exhaust pipe 313 is connected to the exhaust connector 314.

[0040] Three quick connectors 309 are used to adapt to different hydrogen sources. Each interface type is equipped with a mechanical coded identification pin. The PLC automatically identifies the type of hydrogen source connected and matches the pre-processing parameters through a code reader. Type A connector is compatible with small laboratory hydrogen source interfaces (pressure 0.01-1MPa, flow rate 0.1-10Nm). 3 / h), the coding pin is identified as a single notch type; Type B connector is compatible with the exhaust port of PEM or AEM electrolytic cells for testing (pressure 0.1-5MPa, flow rate 1-500Nm³). 3 / h), the coding pin is a double-notch type; Type C connectors are compatible with large alkaline electrolyzers or industrial by-product hydrogen pipeline interfaces (pressure 0.05-3MPa, flow rate 10-1000Nm). 3 / h), the coded pin is identified as a three-notch type.

[0041] Different hydrogen sources have different pressure and flow characteristics, and the three interfaces are independent and do not interfere with each other.

[0042] The output end of the gas supply pipe 308 is connected to a three-way connector 310, which divides the pipeline into two paths: one path connects to the pressure regulating buffer tank 311, and the other path connects to the pretreatment unit 312. After the gas enters from the gas supply pipe 308, it flows through the three-way connector 310 to the pressure regulating buffer tank 311 and the pretreatment unit 312 respectively.

[0043] The pressure regulating buffer tank 311 is used to smooth out pressure fluctuations in the hydrogen source. Some hydrogen sources have unstable pressures, such as those fluctuating during intermittent venting from the electrolyzer. The pressure regulating buffer tank can smooth out these pressure fluctuations by absorbing and buffering pressure pulses using its internal volume. The buffered gas then flows downstream in a relatively stable state. The pressure regulating buffer tank 311 is equipped with an electrically operated pressure regulating valve, which can adjust the output pressure as needed to maintain the hydrogen entering subsequent equipment within a suitable pressure range.

[0044] The pretreatment unit 312 is used to purify the hydrogen. The hydrogen source may contain oxygen, water vapor, carbon monoxide, carbon dioxide, and particulate matter. These impurities can damage the hydrogen storage alloy, and the pretreatment unit 312 removes these impurities through a multi-stage purification process. The purified hydrogen meets the acceptable quality standards for the hydrogen storage alloy.

[0045] The purification indicators for each level are as follows: Deoxidation unit: Catalytic deoxidizer reduces O2 content to ≤5ppm (to prevent alloy oxidation failure); Dehydration unit: Molecular sieve drying reduces H2O content to ≤10ppm (to prevent alloy hydrolysis and pulverization); CO / CO2 removal unit: activated carbon + catalytic conversion reduces CO to ≤1ppm and CO2 to ≤5ppm (to prevent alloy poisoning); Particulate matter filtration: A 0.5μm precision filter removes solid particulate matter.

[0046] After pressure regulation and purification, the hydrogen enters the inlet hose 306 from the output end of the pretreatment unit 312, and the inlet hose 306 delivers the hydrogen to the hydrogen storage module 6.

[0047] The exhaust pipe 313 is connected to the output end of the gas outlet hose 307. When the hydrogen storage module 6 releases hydrogen, the gas enters the exhaust pipe 313 through the gas outlet hose 307. The output end of the exhaust pipe 313 is connected to an exhaust connector 314, which is used to connect to downstream hydrogen-using equipment.

[0048] Furthermore, the pretreatment unit 312 outlet is equipped with an online hydrogen purity analyzer and a trace impurity detection sensor to monitor the purity of purified hydrogen in real time. When the O2 content is detected to be >5ppm or the O content in H2 is >10ppm, the PLC automatically closes the inlet valve and triggers an audible and visual alarm to prevent unqualified hydrogen from entering the hydrogen storage tank and causing irreversible damage to the alloy. The monitoring data is uploaded to the dispatch center in real time via a 4G / 5G module to achieve full traceability of hydrogen quality.

[0049] To accurately measure the hydrogen charge of each hydrogen storage module, a hydrogen mass flow meter is connected in series on the inlet pipe of each module. This mass flow meter can accumulate the mass of hydrogen flowing through the module in real time. The PLC main controller reads the accumulated value of each mass flow meter and compares it with the rated hydrogen storage capacity of the module. When the accumulated hydrogen charge reaches the rated capacity, the PLC can determine that the module is close to saturation. Once the module is full, hydrogen can be supplied to it simultaneously. The PLC can also record the hydrogen charging end time and the accumulated mass, enabling independent end detection and data traceability of the hydrogen storage module.

[0050] The total hydrogen charge of the vehicle is obtained by summing the cumulative values ​​of each hydrogen storage module. The PLC calculates the vehicle load in real time based on this. When the vehicle load exceeds the rated net load of the vehicle model, the PLC locks the hydrogen inlet valve and prompts the operator to reduce the number of modules to prevent the vehicle from being overloaded.

[0051] The hydrogen storage compartment 2 is equipped with a thermal management system to control the temperature during hydrogen absorption and release, such as... Figure 1 , Figure 8 , Figure 13As shown, the thermal management component includes a fan 401, a quick-connect male connector 402, a quick-connect male connector 403, a quick-connect hose 406, and a quick-connect hose 407. The fan 401 is installed on the hydrogen storage compartment 2. The inlet and outlet ends of the hydrogen storage module 6 are respectively connected to the quick-connect male connector 402 and the quick-connect male connector 403. A quick-connect female connector 404 and a quick-connect female connector 405 are installed on the mounting plate 301. The quick-connect male connector 402 and the quick-connect female connector 404 are compatible, and the quick-connect male connector 403 and the quick-connect female connector 405 are compatible. The inlet hose 406 is connected to several inlet quick-connect female connectors 404 through the inlet pipe network 412, and the outlet hose 407 is connected to several outlet quick-connect female connectors 405 through the outlet pipe network 413. It also includes a supply connector 408, a drain connector 409, a supply pipe 410, and a drain pipe 411. The supply connector 408 and the drain connector 409 are both fixedly installed on the secondary car body 3. The supply connector 408 is connected to the inlet hose 406 through the supply pipe 410, and the outlet hose 407 is connected to the drain connector 409 through the drain pipe 411.

[0052] Metal hydrides release heat when absorbing hydrogen. If this heat cannot be dissipated in time, the temperature of the hydrogen storage alloy will rise, and the rate of hydrogen absorption will decrease. Therefore, heat dissipation is required during hydrogen absorption. Conversely, metal hydrides absorb heat when releasing hydrogen. If the heat supply is insufficient, the temperature of the hydrogen storage alloy will drop. The rate of hydrogen release will also decrease, thus requiring heating during hydrogen release.

[0053] The thermal management components include both air cooling and water cooling methods.

[0054] For scenarios with low hydrogen collection flow rates, an air-cooled heat dissipation solution can be adopted. Fan 401, installed on the hydrogen storage compartment 2, is activated during static hydrogen absorption. Fan 401 draws air from the outside, allowing it to flow over the surface of the hydrogen storage module 6, carrying away the heat dissipated by the module.

[0055] For scenarios with large hydrogen flow rates, a water-cooling solution can be adopted. Each hydrogen storage module 6 has a quick-connect male connector at its inlet and outlet, and a corresponding quick-connect female connector is installed on the mounting plate 301. When the hydrogen storage module 6 is pushed into place, the inlet quick-connect male connector 402 connects with the inlet quick-connect female connector 404, and the outlet quick-connect male connector 403 connects with the outlet quick-connect female connector 405. Cooling water can flow through this loop through the internal heat exchange structure of the hydrogen storage module 6, and the cooling water carries away the heat generated by the hydrogen absorption reaction.

[0056] When water cooling is required, connect the external water source to the liquid supply connector 408 and connect the drain connector 409 to the wastewater collection device. The water source enters the liquid supply pipe 410 through the liquid supply connector, and then the cooling water is sent to the liquid inlet hose 406 through the liquid supply pipe 410. The liquid inlet hose 406 is distributed to each liquid inlet quick-connect female connector through the liquid inlet pipe network 412. After the cooling water passes through the hydrogen storage module 6, the temperature rises and the hot water flows out from the liquid outlet quick-connect female connector. It flows through the liquid outlet pipe network 413 and merges into the liquid outlet hose 407. The liquid outlet hose 407 sends the hot water to the drain connector 409 through the drain pipe 411, thereby sending the hot water into the wastewater collection device. The hot water is naturally cooled in the wastewater collection device, or it is cooled by an external heat dissipation device and then recycled.

[0057] Each hydrogen storage module 6 is equipped with a temperature sensor to monitor the alloy temperature in real time, and can automatically increase the heat exchange rate or decrease the hydrogen flow rate according to the set value.

[0058] When releasing hydrogen, the hydrogen storage alloy needs to absorb heat. For scenarios with a small hydrogen supply flow, the near-room temperature alloy can spontaneously release hydrogen up to 0.1 MPa at an ambient temperature of 15-35°C without external heating. For scenarios with a large hydrogen supply flow or when the ambient temperature is low, the built-in PTC electric heater in the vehicle compartment or the external circulating hot water can be connected to provide gentle heating for the hydrogen storage alloy.

[0059] The intelligent control module, based on a PLC main controller and sensor group, realizes automatic identification of multi-source hydrogen interfaces, automatic adjustment of hydrogen absorption and desorption rates, temperature safety interlock, and remote monitoring and scheduling. The intelligent control module, based on the PLC intelligent control system, realizes full-process automation, including inlet hydrogen pressure sensor, flow sensor, array module temperature sensor, outlet pressure sensor, and leak detection sensor. Automatic control logic for hydrogen absorption process: 1. Automatically match the parameters of preprocessing unit 312 to detect interface type; 2. The opening of the hydrogen absorption flow valve is automatically adjusted according to the alloy temperature and inlet pressure; 3. If the temperature exceeds the set value, reduce the hydrogen absorption rate or stop the absorption process. 4. When hydrogen absorption reaches ≥95% alloy saturation, the system will automatically stop and prompt for replacement of the array module or relocation of the vehicle; Automatic control logic for hydrogen release process: 1. Automatically adjust the outlet valve opening based on downstream demand pressure; 2. PTC heating will automatically start when the ambient temperature is lower than the set value; 3. When hydrogen is released to the point where the alloy residue is ≤5%, prompt for a return trip for recharging; 4. Remote monitoring: The 4G / 5G communication module uploads real-time data (hydrogen storage capacity, temperature, pressure, and location) to the dispatch center, supporting remote command start / stop and route planning.

[0060] The safety protection module is used to monitor hydrogen leaks and provide emergency pressure relief. Within the module, eight catalytic combustion H2 sensors are distributed in key locations within the vehicle compartment. It features a 1% LEL threshold alarm and a 5% LEL threshold-linked emergency pressure relief. The manifold pressure relief valve opens at a pressure of 5.1 MPa, and the pressure relief outlet is led to the top of the vehicle compartment via a flame arrester for venting. All electrical components are of ExdIIBT4 explosion-proof rating. The vehicle is equipped with an electrostatic grounding device and a nitrogen purging system.

[0061] 1. Hydrogen leak detection: Multiple catalytic combustion hydrogen sensors are installed in key locations in the carriage. When the hydrogen concentration reaches 1% LEL, an audible and visual alarm is triggered, and when the concentration rises to 5% LEL, the emergency pressure relief device is activated. 2. Emergency pressure relief and flame arrestor: The manifold is equipped with a pressure relief valve with an opening pressure of 5.1 MPa. The pressure relief pipeline is connected in series with a corrugated plate flame arrestor. The pressure relief gas is vented from the top of the car body to prevent flame backflow. Flame arrestors are also installed on the hydrogen inlet and outlet pipelines. 3. Explosion-proof configuration: All electrical components in the vehicle are uniformly equipped with an explosion-proof rating of ExdIIBT4; 4. Auxiliary Safety: Equipped with a nitrogen purging system, the gas inside the tank is replaced during the first hydrogen filling and long-term shutdown to prevent air from entering and causing alloy oxidation and exothermic reactions; the vehicle is equipped with a standard electrostatic grounding device, and grounding must be completed before hydrogen collection operations to eliminate electrostatic hazards.

[0062] Example 2

[0063] Waste hydrogen collection during electrolyzer testing (suitable for light transport vehicles, hydrogen storage capacity < 50 kg) PEM electrolyzer manufacturers conducted MEA performance verification tests, which showed that 5-10 Nm³ of waste hydrogen was generated per hour. 3 The hydrogen pressure is 0.2-3 MPa; the workshop tests for an average of 8 hours per day, producing 3-7 kg of waste hydrogen per day. Given the small hydrogen production volume and fixed location in this scenario, a 4-ton light transport vehicle is used for collection operations.

[0064] Light transport vehicles drive into the designated area of ​​the testing workshop and connect to the static grounding device to eliminate potential static electricity hazards; The A-type quick connector 309 is used to connect to the test exhaust port of the electrolytic cell. The PLC system automatically identifies the interface type through the code identification pin and starts the pretreatment unit 312. The adaptive pressure regulating valve sets the output pressure to 1.6MPa, and sequentially completes deoxygenation, dehydration, impurity removal and particulate matter filtration. After the online gas quality monitoring unit confirms that the purity of the purified hydrogen is qualified, the PLC opens the valve of the hydrogen absorption pipeline. The low-pressure hydrogen enters the hydrogen storage tank array after purification. The hydrogen storage alloy stably adsorbs hydrogen under the conditions of 25℃ and 1.6MPa. The thermal management system starts the vehicle-mounted fan 401 for air cooling, the temperature sensor monitors the tank temperature in real time, and the PLC dynamically adjusts the hydrogen absorption rate according to the temperature. The daily operation can collect a total of 3-7 kg of hydrogen; the vehicle can continuously patrol for 3-5 days, and the total hydrogen storage of the whole vehicle is 15-35 kg. The hydrogen storage capacity is less than 50 kg, which meets the specifications for the use of light vehicles. After the operation is completed, the vehicle is transported to the downstream hydrogen consumption point; under the environment of 25℃, the hydrogen storage alloy releases hydrogen from the outlet pressure to 0.1MPa, and the hydrogen release rate is controlled by the valve, and all hydrogen is released in 3~5 hours. After hydrogen release is complete, the operator rotates handle 107 90° to unlock the corresponding hydrogen storage module, pulls out the hydrogen-filled storage module along guide rail 101, and pushes in a new hydrogen storage module. The entire module replacement process takes ≤5 minutes. The vehicle then returns to begin the next round of collection operations.

[0065] Example 3

[0066] Hydrogen collection from industrial byproducts in chlor-alkali plants (suitable for medium-sized transport vehicles, hydrogen storage capacity 50kg-150kg) A chlor-alkali plant produces approximately 800-1500 Nm³ of hydrogen as a byproduct per day. 3 (Equivalent to approximately 60-140 kg of hydrogen), hydrogen pressure 0.05~0.15 MPa; some hydrogen is used for hydrochloric acid synthesis, and approximately 50-120 kg of by-product hydrogen is directly vented and burned daily. The hydrogen production in this scenario is moderate, and a 10-ton medium-sized transport vehicle is used for collection and transportation.

[0067] The medium-sized transport vehicle stopped at the branch interface of the factory's by-product hydrogen pipeline and connected to the static grounding device. Using a Type B quick connector 309 to connect to the hydrogen source pipeline, the PLC automatically identifies the interface type and matches the pretreatment parameters, and the adaptive pressure regulating valve sets the output pressure to 0.15MPa, focusing on strengthening deoxygenation and decarbonization treatment; After online gas quality monitoring confirms that the gas is qualified, the hydrogen absorption valve is opened, and hydrogen is adsorbed by the hydrogen storage alloy under low pressure conditions of 0.1~0.15MPa; under high flow conditions, the water cooling mode is switched to ensure heat exchange efficiency. It can collect 50-120kg of hydrogen by working continuously for 3 hours a day; which is within the standard hydrogen storage range of 50-150kg for a medium-sized vehicle. After being fully loaded, the vehicle is transported to downstream users such as hydrogen refueling stations and chemical enterprises; in an environment of 15~35℃, the hydrogen storage alloy spontaneously releases hydrogen to complete the hydrogen supply. After hydrogen release is complete, the empty tank module is replaced using the 101 quick-installation system on the guide rail, and the empty vehicle returns to the plant area to carry out the by-product hydrogen collection work in a cyclical manner.

[0068] Example 4

[0069] Multi-source mobile hydrogen collection system for industrial parks (compatible with heavy-duty transport vehicles, hydrogen storage capacity 150kg-500kg) A large industrial park has multiple dispersed large-scale hydrogen sources: a large electrolyzer testing workshop vents 100 kg of hydrogen per day, and a chemical industrial park's by-product hydrogen vents a total of 150 kg of hydrogen per day. Given the numerous locations and large cumulative hydrogen production, 30-ton heavy-duty transport vehicles were selected for comprehensive, continuous collection.

[0070] Heavy transport vehicles proceed to various hydrogen source locations within the park according to a pre-set route, and connect to A / B / C type quick connectors 309 according to the on-site working conditions; the PLC automatically switches the interface mode and gas pretreatment parameters through the coded identification pin, and the adaptive pressure regulating valve automatically adjusts the output pressure according to the type of hydrogen source. A single patrol by the vehicle takes 2-3 hours and can collect hydrogen from the entire park. The amount of hydrogen collected in a single patrol is 200kg, and the total hydrogen storage capacity of the vehicle reaches more than 150kg, which is within the standard hydrogen storage range of 150-500kg for heavy-duty vehicles. The maximum cumulative hydrogen storage capacity is 450kg, which still meets the vehicle's usage requirements. During the patrol, the weighing and load distribution monitoring system monitors the weight of each module and the position of the vehicle's center of gravity in real time to ensure even load distribution and prevent overloading; Once the hydrogen storage capacity reaches the set limit, the vehicles will be transferred to a centralized hydrogen consumption base; the hydrogen will be released spontaneously by relying on ambient temperature, and the full amount of hydrogen will be released in 3-5 hours. After hydrogen release, empty tank modules are replaced in batches using the 101 quick-release self-sealing locking system on the guide rail. A heavy-duty vehicle can carry up to 10 modules, and a single person can unlock, pull out, and push in the new modules sequentially. The entire replacement process takes ≤30 minutes (compared to 2-3 hours using traditional methods). The vehicle then returns empty to continue its patrol and collection mission within the park.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-pressure solid-state hydrogen storage-based loose hydrogen collection transport vehicle, comprising a transport vehicle body (1), a hydrogen storage compartment (2) and a secondary compartment (3) are arranged on the transport vehicle body (1), characterized in that, Also includes: The mounting frame (4) is provided with a plurality of assembly slots (5), and each assembly slot (5) is provided with a sliding support assembly, and a hydrogen storage module (6) is provided on the sliding support assembly. A buffer and shock absorption assembly is provided between the mounting frame (4) and the inner bottom wall of the hydrogen storage compartment (2) to support the mounting frame (4). Hydrogen interface and pretreatment components are provided inside the secondary compartment (3) for transporting hydrogen and pretreating it; Thermal management component, the hydrogen storage compartment (2) is provided with the thermal management component, which is used to control the temperature during hydrogen absorption and hydrogen release; The intelligent control module, based on a PLC main controller and a sensor group, enables automatic identification of multi-source hydrogen interfaces, automatic adjustment of hydrogen absorption and desorption rates, temperature safety interlocking, and remote monitoring and scheduling. A safety protection module is used to monitor hydrogen leaks and perform emergency depressurization.

2. A low-pressure solid-state hydrogen storage based loose hydrogen collection and transportation vehicle according to claim 1, characterized in that, The sliding support assembly includes: Guide rails (101), two guide rails (101) are symmetrically and fixedly arranged inside each of the assembly slots (5); Rollers (102): Two rollers (102) are rotatably arranged on each side of the bottom of each hydrogen storage module (6), and the rollers (102) are in rolling contact with the guide rail (101); Locking block (103), each of the hydrogen storage modules (6) is fixedly provided with a locking block (103) at the bottom, and locking interfaces (104) are symmetrically provided on the locking block (103). A locking mechanism is provided inside each of the assembly slots (5) for fixing the hydrogen storage module (6) by means of the locking block (103).

3. A low-pressure solid-state hydrogen storage based loose hydrogen collection and transportation vehicle according to claim 2, characterized in that, The locking mechanism includes: Locking bracket (105), each of the assembly slots (5) is provided with a locking bracket (105), a plurality of locking brackets (105) correspond one-to-one with a plurality of locking blocks (103), a connecting rod (106) is rotatably provided inside the locking bracket (105), and a handle (107) is fixedly provided at one end of each connecting rod (106) away from the center position of the locking bracket (105); The locking tongue (108) is symmetrically and slidably arranged inside the locking bracket (105). The locking tongue (108) is adapted to the locking interface (104). Each locking tongue (108) is fixedly provided with a rack (109). The two racks (109) inside each locking bracket (105) are slidably engaged with the locking bracket (105). The transmission gear (110) is rotatably mounted inside each of the locking brackets (105), and the transmission gear (110) meshes with the rack (109); A first helical gear (111) and a second helical gear (112) are provided on each of the transmission gears (110) and the second helical gear (112) are provided on each of the connecting rods (106) and the first helical gear (111) meshes with the second helical gear (112).

4. A scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage according to claim 3, characterized in that, The buffer and shock absorption assembly includes: The shock-absorbing base plate (201) is fixedly installed between the inner bottom wall of the hydrogen storage compartment (2) and the mounting frame (4). The shock-absorbing base plate (201) consists of three layers from top to bottom: a rubber pad (20101), a steel plate (20102), and a silicone pad (20103). Limiting brackets (202) are fixedly installed at the four corners of the mounting frame (4), and rubber blocks (203) are installed on each limiting bracket (202).

5. A scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage according to claim 4, characterized in that, The hydrogen interface and pretreatment components include: Mounting partition (301), each of the mounting slots (5) is provided with mounting partition (301); The inlet and outlet quick-connect male connectors (302 and 303) of the hydrogen storage module (6) are respectively connected to the inlet and outlet ends of the module. The mounting partition (301) is equipped with an inlet quick-connect female connector (304) and an outlet quick-connect female connector (305). The inlet quick-connect male connector (302) and the inlet quick-connect female connector (304) are compatible, and the outlet quick-connect male connector (303) and the outlet quick-connect female connector (305) are compatible. An air inlet hose (306) and an air outlet hose (307) are provided. The air inlet hose (306) is connected to a plurality of air inlet quick-connect female connectors (304) via an air inlet network (315), and the air outlet hose (307) is connected to a plurality of air outlet quick-connect female connectors (305) via an air outlet network (316). The gas delivery mechanism is provided inside the secondary compartment (3) to deliver hydrogen to the inlet hose (306).

6. A scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage according to claim 5, characterized in that, The gas delivery mechanism includes: An air supply pipe (308) is connected to three quick connectors (309), and a three-way connector (310) is connected to the output end of the air supply pipe (308). The pressure regulating buffer tank (311) and the pretreatment unit (312) are connected, with the three-way connector (310) connected to the input end of the pressure regulating buffer tank (311) and the input end of the pretreatment unit (312) respectively, and the output end of the pretreatment unit (312) connected to the air inlet hose (306). The exhaust pipe (313) is connected to the output end of the exhaust hose (307), and the output end of the exhaust pipe (313) is connected to the exhaust connector (314).

7. A scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage according to claim 6, characterized in that, The thermal management component includes: Fan (401), the hydrogen storage compartment (2) is equipped with a fan (401); The inlet and outlet ends of the hydrogen storage module (6) are respectively connected to the inlet male connector (402) and the outlet male connector (403). The mounting partition (301) is equipped with an inlet female connector (404) and an outlet female connector (405). The inlet male connector (402) and the inlet female connector (404) are compatible, and the outlet male connector (403) and the outlet female connector (405) are compatible. The inlet hose (406) and outlet hose (407) are connected to a number of inlet quick-connect female connectors (404) via an inlet pipe network (412), and the outlet hose (407) is connected to a number of outlet quick-connect female connectors (405) via an outlet pipe network (413).

8. A scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage according to claim 7, characterized in that, Also includes: Liquid supply connector (408) and liquid drain connector (409) are fixedly installed on the secondary carriage (3); The liquid supply pipe (410) and the liquid discharge pipe (411) are connected. The liquid supply connector (408) is connected to the liquid inlet hose (406) through the liquid supply pipe (410), and the liquid outlet hose (407) is connected to the liquid discharge connector (409) through the liquid discharge pipe (411).

9. A scattered hydrogen collection and transportation vehicle based on low-pressure solid-state hydrogen storage according to claim 8, characterized in that, The safety protection module includes eight catalytic combustion H2 sensors distributed in key locations within the vehicle compartment, with 1% LEL threshold alarm and 5% LEL threshold linkage for emergency pressure relief. The manifold pressure relief valve opens at a pressure of 5.1 MPa, and the pressure relief outlet is led to the top of the car body for venting via a flame arrester; All electrical components are of the ExdIIBT4 explosion-proof rating; The vehicle is equipped with an electrostatic grounding device and a nitrogen purging system.

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