Automatic control method and system for hydrogen production and hydrogenation

Abstract

The invention discloses an automatic control method for hydrogen production and hydrogenation, which comprises the following steps of: S1, electrifying and initializing a system, and then carrying out system self-inspection; and S2, corresponding hydrogen production control modes are selected according to different use scenes, hydrogen production and hydrogenation operation is carried out, and the hydrogen production control modes comprise an electrolytic hydrogen production and hydrogenation mode, a high-pressure steel cylinder hydrogenation mode and a hydrogen production and solid-state hydrogen storage mode. The invention provides the automatic control method and system for hydrogen production and hydrogenation, so that the reliability, flexibility and diversity of the hydrogen production and hydrogenation all-in-one machine are improved.

Description

Technical Field

[0001] This invention relates to an automated control method and system for hydrogen production and hydrogen refueling, belonging to the field of hydrogen production and hydrogen refueling control technology. Background Technology

[0002] Currently, hydrogen energy is considered a key energy source for achieving carbon emission reduction due to its abundant supply, high energy density, and the fact that its combustion product is water. Integrated hydrogen production and refueling machines are commercialized equipment in the hydrogen energy industry. These machines integrate hydrogen production, storage, compression, and refueling functions, aiming to solve problems such as high transportation costs and low energy efficiency caused by the separation of traditional hydrogen production and refueling processes.

[0003] In existing technologies, integrated hydrogen production and refueling machines still have many problems during use, such as: Electrolysis current regulation relies on operator experience and estimation, resulting in insufficient control precision.

[0004] The system suffers from integration defects, with a fragmented control platform, each part controlled independently, resulting in low system integration.

[0005] The hydrogen production and refueling modes are relatively simple and cannot be adapted to a variety of application scenarios.

[0006] Therefore, there is an urgent need for an automated control scheme for hydrogen production and hydrogen refueling to solve the above problems. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an automated control method and system for hydrogen production and hydrogen refueling, thereby improving the reliability, flexibility and versatility of the integrated hydrogen production and hydrogen refueling machine.

[0008] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: This invention provides an automated control method for hydrogen production and hydrogenation, comprising the following steps: Step S1: Power on and initialize the system, then perform a system self-test; Step S2: Select the corresponding hydrogen production control mode according to different usage scenarios and perform hydrogen production and hydrogenation operations. The hydrogen production control modes include electrolysis hydrogen production and hydrogenation mode, high-pressure cylinder hydrogenation mode, and hydrogen production and solid-state hydrogen storage mode.

[0009] Furthermore, the system self-test specifically includes the following steps: Step S11: Monitor the water tank temperature. If the water tank temperature is <5℃, it indicates that the ambient temperature is too low. Activate the low temperature alarm and keep the system in a stopped state. If the water tank temperature is ≥5℃, the water temperature meets the system operating conditions, and proceed to step S12. Step S12: Monitor the water tank level. If the water tank level is less than 70% of the water tank height, start the water replenishment pump to replenish the water tank. If 70% of the water tank height is less than or equal to the water tank level and less than or equal to 85% of the water tank height, the water tank level meets the system operating conditions, and proceed to step S13. Step S13: Monitor the water quality in the water tank. If the resistivity of the water in the tank is <10 megohms, issue an alarm for water quality exceeding the standard and keep the system in a shutdown state. If the resistivity of the water in the tank is ≥10 megohms, the water quality meets the system operating conditions and proceed to step S14. Step S14: Monitor the hydrogen leakage. If the hydrogen leakage is ≤3%LEL, the system operation conditions are met, and proceed to step S15. If 3%LEL < hydrogen leakage ≤20%LEL, issue a hydrogen leakage exceeding the limit alarm, the system remains in its original state, and the exhaust fan is started. If 20%LEL < hydrogen leakage ≤40%LEL, issue a hydrogen leakage exceeding the limit alarm, the system enters a shutdown state, and the exhaust fan is started. If 40%LEL < hydrogen leakage ≤60%LEL, issue a hydrogen leakage exceeding the limit alarm, and the system stops all actions except alarms. Step S15: The circulating pump starts up and performs a self-test. The circulating pump operates for 10 seconds and generates circulating water pressure in the pipeline. If the circulating water pressure is <0.1MPa, an alarm is triggered indicating that the circulating water pressure is too low, and the system remains in a stopped state. If the circulating water pressure is ≥0.1MPa, the operating state of the circulating pump meets the system operating conditions, and the process proceeds to step S16. Step S16: Monitor the electrolyzer pressure. If the electrolyzer pressure is >3.0MPa, issue an overpressure alarm for hydrogen production and keep the system in a shutdown state. If the electrolyzer pressure is ≤3.0MPa, the electrolyzer pressure meets the system operating conditions, and proceed to step S17. Step S17: Monitor the system purification section pressure. If the purification pressure is >3.0MPa, issue an overpressure alarm and keep the system in a shutdown state. If the purification pressure is ≤3.0MPa, the purification pressure meets the system operating conditions, and proceed to step S18. Step S18: Monitor the output pressure of the booster. If the output pressure of the booster is >35.5MPa, issue a hydrogen overpressure alarm and keep the system in a shutdown state; if the output pressure of the booster is <35.5MPa, the output pressure of the booster meets the system operating conditions and proceed to step S19. If steps S11 to S18 are satisfied, the system is allowed to run automatically.

[0010] Furthermore, the electrolytic hydrogen production and hydrogenation mode specifically includes the following steps: Step S201: Select the electrolysis hydrogen production and hydrogen addition mode, set the target hydrogen charging pressure for this operation, and start the system; Step S202: The chiller is automatically turned on, and the chiller control subroutine controls the operation of the chiller to reduce the cooling water temperature to the working temperature. Step S203: If the water tank temperature is ≤15.0℃, start the circulation pump; Step S204: The circulating pump is working. If the circulating water pressure is ≥0.1MPa, the electrolysis power supply is turned on, and the current ramp-up subroutine controls the electrolysis power supply to perform current ramp-up. Step S205: The electrolytic power supply is working, and the electrolytic cell performs water electrolysis to produce hydrogen and oxygen. The generated oxygen flows back to the water tank with the circulating water, and is then discharged after gas-water separation through the oxygen vent of the water tank. The generated hydrogen flows into the hydrogen-water-gas separator, where it is cooled and condensed by cooling water. The generated hydrogen is then separated into gas and liquid, and the separated liquid water is controlled and drained by the gas-liquid separation drainage subroutine. Step S206: After the generated hydrogen gas accumulates in the hydrogen-water-gas separator, it causes the electrolytic cell to generate electrolytic cell pressure. When the electrolytic cell pressure is ≥1MPa, the purification operation is started. The purification operation is controlled by the purification AB tank switching subroutine. Step S207: After purification, the hydrogen gas is tested for dew point. If the dew point value is > -45℃, it is determined to be unqualified hydrogen gas; if the dew point value is ≤ -45℃, it is determined to be qualified hydrogen gas, and the purification and venting subroutine performs purification and venting control processing. Step S208: If the dew point value is ≤-45℃, the hydrogen purging and replacement subroutine controls qualified hydrogen gas to purge and replace the internal pipelines of the system. Step S209: Change the purification time; Step S210: The system automatically selects the hydrogen charging path based on the target hydrogen charging pressure for this charge. Step S211: After the hydrogen charging task is completed, the system enters the venting stage, which is controlled by the system automatic shutdown subroutine.

[0011] Furthermore, the chiller control subroutine specifically includes the following steps: Step S51: If the water tank temperature is ≥10.5℃ and the shutdown interval is ≥the set shutdown interval time, start the chiller; Step S52: If the water tank temperature is ≤10.0℃, stop the chiller and start timing the shutdown interval; Step S53: After the chiller stops, wait 1-5 minutes before restarting the chiller.

[0012] Furthermore, the power ramp-up subroutine specifically includes the following steps: Step S61: Run at 20% of the rated current for 1 to 5 minutes, with a reference value of 2 minutes; Step S62: Run at 50% of the rated current for 1 to 5 minutes, with a reference value of 3 minutes; Step S63: Linearly increase the rated current from 60% to 100% for a running time of 1~30 minutes, with a reference value of 5 minutes; Step S64: If the hydrogen production water temperature is ≥35℃, then skip steps S61 and S62 and proceed directly to step S63. Step S65: After the system is powered off and then powered on again, the first run will still execute steps S61, S62, S63, and S64 in sequence.

[0013] Furthermore, the gas-liquid separation drainage subroutine specifically includes the following steps: Step S71: If the liquid level in the gas-liquid separation tank is ≥60%, the system will automatically open the drain valve DK1 of the hydrogen-water-gas separator to drain the water. Step S72: If the gas-liquid separation liquid level is ≤40%, the system will automatically close the drain valve DK1 of the hydrogen-water-gas separator to store water.

[0014] Furthermore, the high-pressure cylinder hydrogenation mode specifically includes the following steps: Step S301: Select the high-pressure cylinder hydrogen filling mode, set the target hydrogen filling pressure for this time, open the solenoid valve DK11, connect the gas pipeline of the high-pressure cylinder, and start the system. Step S302: Automatically fill with hydrogen according to the target hydrogen filling pressure; Step S303: After the hydrogen charging task is completed, the system enters the venting stage, which is controlled by the system's automatic shutdown subroutine.

[0015] Furthermore, the hydrogen production and solid-state hydrogen storage mode specifically includes the following steps: Step S401: Select the hydrogen production and solid-state hydrogen storage mode, set the target pressure for this hydrogen charging, and start the system; Step S402: Turn on the chiller. The chiller control subroutine controls the operation of the chiller. The cooling water temperature drops to the working temperature. Set the working temperature of the cooling water to 10℃. Step S403: If the water tank temperature is ≤15.0℃, start the circulation pump; Step S404: The circulating pump is working, the circulating water pressure is ≥0.1MPa, the electrolysis power supply is turned on, and the current ramp-up operation of the electrolysis power supply is controlled by the power supply ramp-up subroutine. Step S405: The electrolytic power supply is working, and the electrolytic cell performs water electrolysis to produce hydrogen and oxygen. The generated oxygen flows back to the water tank with the circulating water, and is then discharged after gas-water separation through the oxygen vent of the water tank. The generated hydrogen flows into the hydrogen-water-gas separator, where it is cooled and condensed by cooling water. The generated hydrogen is then separated into gas and liquid, and the separated liquid water is drained under control by the gas-liquid separation drainage subroutine. Step S406: After the generated hydrogen gas accumulates in the hydrogen-water-gas separator, it causes the electrolytic cell to generate electrolytic cell pressure. When the electrolytic cell pressure is ≥1MPa, the purification operation is started. The purification operation is controlled by the purification AB tank switching subroutine. Step S407: After purification, the hydrogen gas is tested for dew point. If the dew point value is > -45℃, it is determined to be unqualified hydrogen gas; if the dew point value is ≤ -45℃, it is determined to be qualified hydrogen gas, and the purification and venting subroutine performs purification and venting control processing. Step S408: If the dew point value is ≤-45℃, the hydrogen purging and replacement subroutine controls qualified hydrogen gas to purge and replace the internal pipelines of the system. Step S409: Change the purification time; Step S410: The system automatically selects the hydrogen charging path based on the target hydrogen charging pressure for this charge. Step S411: After the hydrogen charging task is completed, the system enters the venting stage, which is controlled by the system automatic shutdown subroutine.

[0016] Furthermore, the hydrogen charging path in step S410 includes: Path 1: If the target hydrogen charging pressure is lower than the booster start-up pressure, open solenoid valve DK7. The purified hydrogen gas passes through solenoid valve DK7 and enters the metal solid hydrogen storage cylinder. When the hydrogen charging pressure reaches the target hydrogen charging pressure, enter the solid hydrogen storage trickle charging mode. Path 2: If the target hydrogen charging pressure is higher than the booster start-up pressure, then solenoid valves DK9 and DK10 are opened. After purification, the hydrogen gas enters the metal solid hydrogen storage cylinder through solenoid valve DK9, the booster, and solenoid valve DK10. The operation of the booster is controlled by the booster operation subroutine. Finally, when the hydrogen charging pressure reaches the target hydrogen charging pressure, the solid hydrogen storage trickle charging mode is entered.

[0017] Furthermore, the solid-state hydrogen storage trickle charging mode specifically includes the following steps: Step S121: After the final hydrogen charging pressure reaches the target hydrogen charging pressure, the electrolysis power supply uses 10% of the rated current to electrolyze water in the electrolysis cell to produce hydrogen. The hydrogen charging port maintains the set hydrogen charging pressure and trickles hydrogen into the metal solid hydrogen storage bottle. The hydrogen production pressure continues to rise to 0.1 MPa higher than the target hydrogen charging pressure. At this time, the system determines that the metal solid hydrogen storage bottle is full. Step S122: The metal solid hydrogen storage bottle will continue to absorb hydrogen, causing the hydrogen filling pressure to gradually decrease. It is determined whether the pressure value has decreased to 0.5 MPa within a certain period of time. Step S123: If the pressure drops to 0.5MPa, it is determined that the metal solid hydrogen storage bottle can still absorb hydrogen. The electrolysis power supply will gradually increase the current to increase the hydrogen production and increase the system pressure until the target hydrogen filling pressure is reached and the current is stopped. The trickle hydrogen filling process is repeated. Step S124: When the electrolysis power supply current is automatically adjusted to 10% of the rated current, the hydrogen charging pressure reaches the target hydrogen charging pressure, and it is determined that the metal solid hydrogen storage bottle is full, and the hydrogen charging task is completed.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects: This invention employs three different hydrogen production control modes, allowing users to select the appropriate mode based on different usage scenarios, thus making production and usage more flexible and diverse. By automating the entire process of the integrated hydrogen production and refueling machine, this invention achieves a high degree of equipment intelligence and simplifies the operation of the integrated hydrogen production and refueling system. Through the design of multiple control subroutine modules, corresponding subroutine modules can be inserted into the main program as needed, increasing the flexibility of the control scheme and establishing connections to form system integration. By setting various judgment conditions in the self-test process to detect various components and data in the integrated hydrogen production and refueling machine, the safety of the integrated hydrogen production and refueling machine is significantly improved, effectively preventing the occurrence of most accidents. Attached Figure Description

[0019] Figure 1 This is a flowchart of the automated control method for hydrogen production and hydrogenation of the present invention; Figure 2 The flowchart shows the execution of three modes of the automated control method for hydrogen production and hydrogenation of the present invention. Figure 3 This is a schematic diagram of the automated control system for hydrogen production and hydrogen refueling of the present invention. Detailed Implementation

[0020] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Example 1 like Figure 1 As shown, this embodiment provides an automated control method for hydrogen production and hydrogenation, which includes the following steps: Step S1: The system is powered on and initialized, and then a system self-test is performed. The system self-test in this embodiment specifically includes the following steps: Step S11: Monitor the water tank temperature. If the water tank temperature is <5℃, it indicates that the ambient temperature is too low. Activate the low temperature alarm (report "Ambient temperature is low, check if the cooling water circuit is frozen") and keep the system in a stopped state. If the water tank temperature is ≥5℃, the water temperature meets the system operating conditions, and proceed to step S12.

[0022] Step S12: Monitor the water tank level. If the water tank level is less than 70% of the water tank height, start the water replenishment pump to replenish the water tank. If 70% of the water tank height is less than or equal to the water tank level, and the water tank level is less than or equal to 85% of the water tank height, then the water tank level meets the system operating conditions, and proceed to step S13.

[0023] Step S13: Monitor the water quality in the water tank. If the resistivity of the water in the tank is <10 megohms, issue an alarm for water quality exceeding the standard (report "Water quality exceeds the standard, please drain and refill with qualified water!"), and keep the system in a shutdown state; if the resistivity of the water in the tank is ≥10 megohms, the water quality meets the system operating conditions, and proceed to step S14.

[0024] Step S14: Monitor the hydrogen leakage. If the hydrogen leakage is ≤3%LEL, the system operating conditions are met, and proceed to step S15. If 3%LEL < hydrogen leakage ≤20%LEL, a hydrogen leakage exceeding the limit alarm is triggered (reporting "Hydrogen leakage, be careful!"). The system remains in its original state, and the exhaust fan is started. If 20%LEL < hydrogen leakage ≤40%LEL, a hydrogen leakage exceeding the limit alarm is triggered (reporting "Hydrogen leakage exceeds the limit, restart after troubleshooting"), and the system enters a shutdown state, starting the exhaust fan. If 40%LEL < hydrogen leakage ≤60%LEL, a hydrogen leakage exceeding the limit alarm is triggered (reporting "Warning! Warning! Warning! Hydrogen leakage seriously exceeds the limit!"). The system stops all actions except alarms. At this point, to ensure the system can detect the hydrogen leakage, the level is raised to 40%-60%LEL in the previous two states, because at this point, any electrical work on the system, including exhaust, cannot resolve the excessive leakage problem. Therefore, in the event of a serious leak, this embodiment shuts off all valves, power supplies, and other components of the system, retaining only the alarm function. Once the leak has completely stopped, personnel will then inspect and repair it.

[0025] Step S15: The circulating pump performs a self-test upon startup. The circulating pump operates for 10 seconds (range 1-30 seconds, with 10 seconds being the preferred reference value in this embodiment). Circulating water pressure is generated in the pipeline. If the circulating water pressure is <0.1MPa, a low circulating water pressure alarm is triggered (reporting "Low circulating water pressure, check if the pump is running!"). The system remains in a stopped state. If the detected circulating water pressure is ≥0.1MPa, the circulating pump's operating status meets the system's operating conditions, and the process proceeds to step S16.

[0026] Step S16: Monitor the electrolyzer pressure. If the electrolyzer pressure is >3.0MPa, issue an overpressure alarm for hydrogen production (report "Cell pressure too high, please release pressure in time!"), and keep the system in a shutdown state; if the electrolyzer pressure is ≤3.0MPa, the electrolyzer pressure meets the system operating conditions, and proceed to step S17.

[0027] Step S17: Monitor the system purification section pressure. If the purification pressure is >3.0MPa, issue an overpressure alarm (report "Purification pressure is too high, please release pressure in time!") and keep the system in a shutdown state. If the purification pressure is ≤3.0MPa, the purification pressure meets the system operating conditions, and proceed to step S18.

[0028] Step S18: Monitor the output pressure of the booster. If the output pressure of the booster is >35.5MPa, issue a hydrogen overpressure alarm (report "Hydrogen pressure is too high, please release pressure in time!"), and keep the system in a shutdown state; if the output pressure of the booster is <35.5MPa, the output pressure of the booster meets the system operating conditions, and proceed to step S19.

[0029] If steps S11 to S18 are satisfied, the system is allowed to run automatically. When the system is running automatically, it continuously monitors the operation of the water tank and circulating pump, issuing alarms only as a notification and without automatically shutting down the system. If the water tank level does not rise by 1% within a certain period of time, a hydrogen production water replenishment alarm will be issued (reporting "Hydrogen production water replenishment abnormal!"). This alarm will only be issued as a notification, without shutting down the system, and the alarm can be cleared by pressing the alarm clear button.

[0030] Step S2: After the system self-check is completed, select the corresponding hydrogen production control mode according to different usage scenarios to perform hydrogen production and hydrogenation operations. For example... Figure 2 As shown, the hydrogen production control modes include electrolysis hydrogen production and refueling mode, high-pressure cylinder hydrogen refueling mode, and hydrogen production and solid-state hydrogen storage mode.

[0031] Mode 1: The electrolysis-based hydrogen production and refueling mode in this embodiment is used when there is on-site power supply. After producing hydrogen through water electrolysis, the hydrogen is pressurized to a specified pressure and then filled into the hydrogen storage device. For example, outdoors using electric power, prepare a container of pure water, connect it to the hydrogen storage device, turn it on, enter this mode, set the desired hydrogen filling target pressure, and click one-button start. The system will automatically produce hydrogen and fill the hydrogen storage device to the set pressure. After reaching the target pressure, the system automatically enters standby mode, enabling unattended hydrogen filling. For instance, when hydrogen-powered drones are conducting mountain patrols, the drone and the integrated hydrogen production and refueling machine can be transported to the site using pickup trucks, vans, or small cargo vans for on-site hydrogen production and surveying.

[0032] The electrolytic hydrogen production and hydrogenation process specifically includes the following steps: Step S201: Select the electrolysis hydrogen production and hydrogen addition mode, set the target hydrogen charging pressure (1-35MPa), and click the run button to start the system.

[0033] Step S202: The chiller is automatically turned on. The chiller control subroutine controls the operation of the chiller, and the cooling water temperature drops to the working temperature (the working temperature of the cooling water is set to 5-10℃).

[0034] The chiller control subroutine specifically includes the following steps: Step S51: If the water tank temperature is ≥10.5℃ and the shutdown interval is ≥the set shutdown interval time, start the chiller.

[0035] Step S52: If the water tank temperature is ≤10.0℃, stop the chiller and start timing the shutdown interval.

[0036] Step S53: After the chiller stops, allow it to restart after 1-5 minutes (preferably 2 minutes in this embodiment). The purpose of setting the shutdown interval is to protect the chiller and prevent frequent start-stop of the chiller from shortening its lifespan.

[0037] Step S203: If the water tank temperature is ≤15.0℃, start the circulation pump.

[0038] Step S204: The circulating pump operates. If the circulating water pressure is ≥0.1MPa, the electrolysis power supply is turned on, and the current ramp-up operation of the electrolysis power supply is controlled by the power supply ramp-up subroutine.

[0039] The power rise subroutine specifically includes the following steps: Step S61: Run at 20% of the rated current for 1 to 5 minutes (the setting can be adjusted according to actual usage), with a reference value of 2 minutes.

[0040] Step S62: Run at 50% of the rated current for 1 to 5 minutes (the setting can be adjusted according to actual usage), with a reference value of 3 minutes.

[0041] Step S63: Linearly increase the rated current from 60% to 100%, with a running time of 1~30 minutes (which can be set according to actual usage), with a reference value of 5 minutes.

[0042] Step S64: If the hydrogen production water temperature is ≥35℃, then skip steps S61 and S62 and proceed directly to step S63.

[0043] Step S65: After the system is powered off and then powered on again, the first run will still execute steps S61, S62, S63, and S64 in sequence.

[0044] Step S205: The electrolytic power supply is working, and the electrolytic cell performs water electrolysis to produce hydrogen and oxygen. The generated oxygen flows back to the water tank with the circulating water, and is then discharged after gas-water separation through the oxygen vent of the water tank. The generated hydrogen flows into the hydrogen-water-gas separator, where it is cooled and condensed by cooling water. The generated hydrogen is then separated into gas and liquid, and the separated liquid water is controlled and drained by the gas-liquid separation drainage subroutine.

[0045] The gas-liquid separation drainage subroutine specifically includes the following steps: Step S71: If the gas-liquid separation liquid level is ≥60% (which can be set according to actual usage), the system will automatically open the drain valve DK1 of the hydrogen-water-gas separator to drain the water.

[0046] Step S72: If the gas-liquid separation liquid level is ≤40% (which can be set according to actual usage), the system will automatically close the drain valve DK1 of the hydrogen-water-gas separator to store water.

[0047] Step S206: After the generated hydrogen gas accumulates in the hydrogen-water-gas separator, it causes the electrolytic cell to generate electrolytic cell pressure. When the electrolytic cell pressure is ≥1MPa (which can be set according to actual use), the purification operation is started. The purification operation is controlled by the purification AB tank switching subroutine.

[0048] The purification A / B tank switching subroutine includes the following steps: Step S81: Close the hydrogen inlet valve DK5 of purification tank B, close the hydrogen outlet valve DK4 of purification tank A, open the hydrogen inlet valve DK2 of purification tank A, and after a delay of 30 seconds (which can be set according to actual use), open the hydrogen outlet valve DK3 of purification tank B.

[0049] After the purification time of steps S82 and S81 is 5 minutes (which can be set according to actual usage), switch to the next step.

[0050] Step S83: Close the hydrogen inlet valve DK2 of purification tank A, close the hydrogen outlet valve DK3 of purification tank B, open the hydrogen inlet valve DK5 of purification tank B, and after a delay of 30 seconds (which can be set according to actual use), open the hydrogen outlet valve DK4 of purification tank A.

[0051] After the purification time of steps S84 and S83 is 5 minutes (which can be set according to actual usage), switch to the next step.

[0052] Step S85, repeat steps S81 to S84.

[0053] Step S207: After purification, the hydrogen gas is tested for dew point. If the dew point value is > -45℃, it is determined to be unqualified hydrogen gas; if the dew point value is ≤ -45℃, it is determined to be qualified hydrogen gas, and the purification and venting subroutine performs purification and venting control processing.

[0054] The purification and evacuation subroutine specifically includes the following steps: Step S91: If the purification pressure is ≥1MPa and the dew point is >-45℃, open the purification vent valve DK8.

[0055] Step S92: If the purification pressure is <0.95MPa, close the purification vent valve DK8.

[0056] Step S93: If the dew point value is ≤-45℃, close the purification vent valve DK8 and exit the purification vent subroutine.

[0057] Step S208: If the dew point value is ≤-45℃, the hydrogen purging and replacement subroutine controls qualified hydrogen gas to purge and replace the internal pipelines of the system.

[0058] The hydrogen purging and replacement subroutine includes the following steps: Step S101: Open solenoid valve DK9 and wait for the hydrogen production pressure to reach ≥0.3MPa.

[0059] Step S102: Open solenoid valve DK10 and purge the booster compressor with qualified hydrogen gas.

[0060] Step S103: Determine the hydrogen charging pressure. If the hydrogen charging pressure is ≥0.1MPa, an alarm will be generated (reporting "Purge and replacement abnormal!"). This alarm will automatically disappear after the manual valve SK3 is opened to release hydrogen.

[0061] Step S104: If the dew point is not up to standard during the purging process, the high-pressure valve DK10 will be automatically closed. Once the dew point is up to standard, the high-pressure valve DK10 will be reopened to ensure that the gas in the gas path is all up to standard.

[0062] Step S105: The purging continues for a preset time (which can be set according to actual use). Close the high-pressure valve DK10, open the solenoid valve DK7, and the purging and replacement are completed after 5 seconds. Exit the hydrogen purging and replacement subroutine.

[0063] Step S209: Change the purification time. Set the purification switching time to 10-120 min (this can be set according to the actual use of the purification tank; in this embodiment, 120 min is the preferred reference value). The time during which purification tanks A and B work alternately is the purification time. Purification tank A and purification tank B work alternately; while one tank is working, the molecular sieve and palladium catalyst in the other tank are regenerated.

[0064] Step S210: The system automatically selects the hydrogen charging path based on the target hydrogen charging pressure. There are two possible paths: Path 1: If the target hydrogen charging pressure is lower than the booster start-up pressure, open solenoid valve DK7. The purified hydrogen gas will then pass through solenoid valve DK7 to the hydrogen charging port and enter the high-pressure carbon fiber cylinder.

[0065] The hydrogen filling task is complete when the hydrogen filling pressure reaches the target pressure. This approach is applicable to the replacement gas inside high-pressure carbon fiber cylinders.

[0066] Path 2: If the target hydrogen charging pressure is higher than the booster start-up pressure, then solenoid valves DK9 and DK10 are opened. After purification, the hydrogen gas passes through solenoid valve DK9, the booster, and solenoid valve DK10 to the hydrogen charging port and enters the high-pressure carbon fiber cylinder. The operation of the booster is controlled by the booster operation subroutine.

[0067] The booster compressor subroutine includes the following steps: Step S111: When the hydrogen production pressure (i.e., the inlet pressure of the booster) reaches the booster start-up pressure, the booster starts.

[0068] Step S112: As the booster compressor operates, the hydrogen production pressure gradually decreases. When the hydrogen production pressure reaches the booster compressor's stop pressure, the booster compressor stops.

[0069] Step S113: After the booster compressor stops, wait for a certain period of time before restarting, or restart when the hydrogen production pressure reaches the booster compressor start-up pressure (this condition has higher priority). The booster compressor restart protection time can be set; this is to reduce frequent booster compressor starts and increase its service life.

[0070] Step S114: The booster compressor cycles through steps S111 to S113 until the final hydrogen charging pressure (i.e., the booster compressor outlet pressure) reaches the target hydrogen charging pressure, and the entire hydrogen charging task is completed.

[0071] Step S211: After the hydrogen charging task is completed, the system enters the venting stage, which is controlled by the system automatic shutdown subroutine.

[0072] The system automatic shutdown subroutine includes the following steps: If hydrogen charging continues, proceed as follows: 1. Gradually reduce the current of the electrolysis power supply until the electrolysis power supply stops.

[0073] 2. After the electrolysis power supply is confirmed to have stopped by the system, all solenoid valves are closed.

[0074] 3. Manually open the vent valve SC to release the pressure in the hydrogen charging port pipeline.

[0075] 4. When the hydrogen charging pressure is lower than 0.2 MPa, the shutdown judgment is completed, and continuous hydrogen production is started and waiting.

[0076] 5. After replacing the high-pressure carbon fiber cylinder, start the system. The system will continue to produce and charge hydrogen at the target hydrogen charging pressure.

[0077] If hydrogen charging is to be terminated, proceed as follows: 1. Gradually reduce the current of the electrolysis power supply until the electrolysis power supply stops.

[0078] 2. After the electrolysis power supply is confirmed to have stopped by the system, maintain the original state of the solenoid valve. Open the purification vent solenoid valve DK8, and simultaneously open the hydrogen inlet solenoid valves DK2 and DK5 of purification tanks A and B to release the pressure in the system.

[0079] 3. Manually open the exhaust valve SC to release the pressure in the hydrogen charging port pipeline. Release the pressure inside the booster compressor.

[0080] 4. When the hydrogen charging pressure is lower than 0.2 MPa, the shutdown judgment is completed and the system returns to standby state.

[0081] Mode 2: This embodiment's high-pressure cylinder hydrogen refueling mode is used when there is no on-site power supply but a long-term hydrogen-powered operating range is required. It allows the use of a portable hydrogen cylinder, powered by the electric vehicle's AC converter, to provide a small load of power to the hydrogen generator (the high-pressure cylinder refueling mode only needs to power the system controller, booster, and solenoid valve; the electrolysis power supply does not need to be activated), thus transferring the hydrogen from the cylinder to the hydrogen storage device. If the vehicle is in the field and there is no external power supply, a small load of battery power can be used to power the device, directly transferring the hydrogen from the cylinder to the storage device. After connecting the small load of power and the hydrogen storage device, the device is powered on and enters this mode. The desired hydrogen refueling target pressure is set, and after clicking the one-button start, the system will automatically run, refueling to the set pressure. Once the set pressure is reached, the system automatically enters standby mode. This function also enables unattended hydrogen refueling.

[0082] The high-pressure cylinder hydrogen refueling mode specifically includes the following steps: Step S301: Select the high-pressure cylinder hydrogen filling mode, set the target hydrogen filling pressure for this time, open the solenoid valve DK11, connect the gas pipeline of the high-pressure cylinder, and start the system.

[0083] Step S302: The system automatically selects the hydrogen charging path based on the target hydrogen charging pressure. There are two possible paths: Path 1: If the target hydrogen filling pressure is lower than the booster start-up pressure, open solenoid valve DK10. Hydrogen gas passes through solenoid valves DK11 and DK10 to the hydrogen filling port and enters the high-pressure carbon fiber cylinder. When the hydrogen filling pressure reaches the target pressure for this filling, the entire hydrogen filling task is completed. This path is applicable to the replacement gas inside the high-pressure carbon fiber cylinder.

[0084] Path 2: If the target hydrogen charging pressure is higher than the booster start pressure, then solenoid valve DK10 is opened. Hydrogen gas passes through the booster and solenoid valve DK10 to the hydrogen charging port and enters the high-pressure carbon fiber cylinder. The operation of the booster is controlled by the booster operation subroutine, which is the same as in Mode 1.

[0085] Step S303: After the hydrogen charging task is completed, the system enters the venting stage, which is controlled by the system's automatic shutdown subroutine.

[0086] The system automatic shutdown subroutine includes the following steps: If hydrogen charging continues, proceed as follows: 1. Manually open the vent valve SC to release the pressure in the hydrogen charging port pipeline.

[0087] 2. When the hydrogen charging pressure is lower than 0.2 MPa, the shutdown judgment is completed, and continuous hydrogen production is started and waiting.

[0088] 3. After replacing the high-pressure carbon fiber cylinder and starting the system, the system will continue to produce and charge hydrogen at the target hydrogen charging pressure.

[0089] If hydrogen charging is to be terminated, proceed as follows: 1. Manually open the exhaust valve SC to release the pressure in the hydrogen charging port pipeline and the pressure in the booster.

[0090] 2. When the hydrogen charging pressure is lower than 0.2 MPa, the shutdown judgment is completed and the system returns to standby state.

[0091] Mode 3: The hydrogen production and solid-state hydrogen storage mode in this embodiment is used to fill metal solid-state hydrogen storage cylinders with hydrogen, achieving efficient and safe hydrogen filling. After connecting the power supply, start the equipment, enter this mode, set the target hydrogen filling pressure, and click the start button to start the hydrogen production and filling function. The system will run automatically, filling to the set pressure. After reaching the set pressure, the system will automatically enter standby mode (stop hydrogen production and filling). This function can also realize unattended hydrogen filling operation.

[0092] The hydrogen production and solid-state storage mode specifically includes the following steps: Step S401: Select the hydrogen production and solid-state hydrogen storage mode, set the target pressure for this hydrogen charging, and start the system.

[0093] Step S402: Turn on the chiller. The chiller control subroutine controls the operation of the chiller. The cooling water temperature drops to the working temperature. Set the working temperature of the cooling water to 10℃. The chiller control subroutine here is the same as in Mode 1.

[0094] Step S403: If the water tank temperature is ≤15.0℃, start the circulation pump.

[0095] Step S404: The circulating pump operates, the circulating water pressure is ≥0.1MPa, the electrolysis power supply is turned on, and the power supply ramp-up subroutine controls the current ramp-up operation of the electrolysis power supply. The power supply ramp-up subroutine here is the same as in Mode 1.

[0096] Step S405: The electrolytic power supply operates, and the electrolytic cell performs water electrolysis to produce hydrogen and oxygen. The generated oxygen flows back to the water tank with the circulating water, and is then discharged after gas-water separation through the oxygen vent of the water tank. The generated hydrogen flows into the hydrogen-water-gas separator, where it is cooled and condensed by cooling water. The generated hydrogen is then separated into gas and liquid. The gas-liquid separation drainage subroutine controls the drainage of the separated liquid water. The gas-liquid separation drainage subroutine here is the same as in Mode 1.

[0097] Step S406: After the generated hydrogen gas accumulates in the hydrogen-water-gas separator, it causes the electrolytic cell to generate electrolytic cell pressure. When the electrolytic cell pressure is ≥1MPa (which can be set according to actual use), the purification operation is started. The purification operation is controlled by the purification AB tank switching subroutine, which is the same as mode one.

[0098] Step S407: After purification, the hydrogen gas is tested for dew point. If the dew point value is > -45℃, it is determined to be unqualified hydrogen gas; if the dew point value is ≤ -45℃, it is determined to be qualified hydrogen gas. The purification and venting subroutine is used for purification and venting control. The purification and venting subroutine here is the same as in Mode 1.

[0099] Step S408: If the dew point value is ≤-45℃, the hydrogen purging and replacement subroutine controls qualified hydrogen gas to purge and replace the internal pipelines of the system. The hydrogen purging and replacement subroutine here is the same as in Mode 1.

[0100] Step S409: Change the purification time and set the purification switch time to 120 min (this can be set according to actual usage).

[0101] Step S410: The system automatically selects the hydrogen charging path based on the target hydrogen charging pressure. There are two possible paths: Path 1: If the target hydrogen charging pressure is lower than the booster start-up pressure, open solenoid valve DK7. The purified hydrogen gas passes through solenoid valve DK7 to the hydrogen charging port and enters the metal solid hydrogen storage cylinder. When the hydrogen charging pressure reaches the target hydrogen charging pressure, enter the solid hydrogen storage trickle charging mode.

[0102] Path 2: If the target hydrogen charging pressure is higher than the booster start-up pressure, then solenoid valves DK9 and DK10 are opened. After purification, the hydrogen gas passes through solenoid valve DK9, the booster, and solenoid valve DK10 to the hydrogen charging port and enters the high-pressure carbon fiber cylinder. The operation of the booster is controlled by the booster operation subroutine.

[0103] The booster compressor subroutine includes the following steps: Step S111: When the hydrogen production pressure (booster inlet pressure) reaches the booster start pressure, the booster starts.

[0104] Step S112: As the booster compressor operates, the hydrogen production pressure gradually decreases. When the hydrogen production pressure reaches the booster compressor's stop pressure, the booster compressor stops.

[0105] Step S113: After the booster compressor stops, wait for a certain period of time before restarting, or restart when the hydrogen production pressure reaches the booster compressor start-up pressure (this condition has higher priority). The booster compressor restart protection time can be set; this is to reduce frequent booster compressor starts and increase its service life.

[0106] Step S114: The booster compressor cycles through steps S111 to S113 until the final hydrogen charging pressure reaches the target pressure for this charging, at which point it enters the solid-state hydrogen storage trickle charging mode. Solid-state hydrogen storage trickle charging involves the system automatically determining whether to enter trickle charging based on the charging port pressure. The principle is to automatically reduce the hydrogen charging flow rate to achieve pressure balance at the charging port, thus completely filling the metal solid-state hydrogen storage cylinder.

[0107] The solid-state hydrogen storage trickle charging mode specifically includes the following steps: Step S121: After the final hydrogen charging pressure reaches the target hydrogen charging pressure, the electrolysis power supply uses a small current (the small current range is 5%-30% of the rated current, and in this embodiment, it is preferred to be 10% of the rated current) to electrolyze water in the electrolysis cell to achieve the purpose of producing hydrogen at a small flow rate. The hydrogen charging port maintains the set hydrogen charging pressure and trickles hydrogen into the metal solid hydrogen storage bottle at a small flow rate. When the current of the electrolysis power supply is automatically adjusted to 10% of the rated current, the hydrogen production pressure continues to rise to 0.1 MPa higher than the target hydrogen charging pressure. At this time, the system determines that the metal solid hydrogen storage bottle is full.

[0108] Step S122: The metal solid hydrogen storage bottle will continue to absorb hydrogen, gradually reducing the hydrogen filling pressure. Within a certain time, it will be determined whether the pressure has decreased to 0.5 MPa (the value range is 0.2-1 MPa, with 0.5 MPa being the preferred reference value in this embodiment). During the hydrogen filling process, the metal solid hydrogen storage bottle needs to absorb the reaction, causing the bottle temperature to rise. Due to the principle of thermal expansion and contraction, when hydrogen filling is not in progress, the temperature of the metal solid hydrogen storage bottle will decrease, and the temperature inside the bottle will also decrease accordingly. When an automatic trickle-feed method achieves a temperature and pressure balance, it indicates that the metal solid hydrogen storage bottle is completely full.

[0109] Step S123: If the pressure drops to 0.5 MPa, it is determined that the metal solid hydrogen storage bottle can still absorb hydrogen. The electrolysis power supply will gradually increase the current to increase the hydrogen production. The system pressure (i.e., the collective term for electrolyzer pressure, purification pressure, and hydrogen charging pressure) will increase until the target hydrogen charging pressure is reached and the current will stop increasing. The trickle hydrogen charging process will be repeated.

[0110] Step S124: Fill the metal solid hydrogen storage bottle with hydrogen at a low flow rate. When the current of the electrolysis power supply is automatically adjusted to 10% of the rated current, the hydrogen filling pressure reaches the target hydrogen filling pressure. It is determined that the metal solid hydrogen storage bottle is full and the hydrogen filling task is completed.

[0111] Step S411: After the hydrogen charging task is completed, the system enters the venting stage. The venting stage is controlled by the system automatic shutdown subroutine, which is the same as in Mode 1.

[0112] Example 2 like Figure 3 As shown, this embodiment provides an automated control system for hydrogen production and hydrogen refueling, which includes: The water tank is used to store the raw water for hydrogen production by water electrolysis, as well as the cooling circulating water.

[0113] A water replenishment pump is used to replenish water to the water tank.

[0114] A chiller is used to cool and lower the temperature of water in a water tank.

[0115] An electrolytic cell is used to carry out chemical reactions, producing hydrogen and oxygen by electrolyzing water.

[0116] The hydrogen-water-gas separator is used to separate water and gas in the hydrogen produced by the electrolyzer. The hydrogen-water-gas separator drains water through the drain solenoid valve DK1.

[0117] The deoxygenator is used to remove oxygen mixed in with hydrogen. The deoxygenator is emptied by the solenoid valve DK8.

[0118] Purification tower A and purification tower B are used to purify the produced hydrogen. Hydrogen from the deoxygenation tank enters purification tower A and purification tower B respectively through inlet solenoid valves DK2 and DK5. Purification tower A and purification tower B are then vented through exhaust solenoid valves DK4 and DK3.

[0119] Hydrogen storage devices, used to store hydrogen produced by the system, refer to the metal solid hydrogen storage cylinders and high-pressure carbon fiber cylinders mentioned above.

[0120] High-pressure cylinders are used to store pre-prepared hydrogen. This system can be used to release the hydrogen from the high-pressure cylinders and transfer it to a hydrogen storage device.

[0121] A booster compressor is used to compress and pressurize the produced hydrogen to achieve the target hydrogen charging pressure.

[0122] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated control method for hydrogen production and hydrogenation, characterized in that, It includes the following steps: Step S1: Power on and initialize the system, then perform a system self-test; Step S2: Select the corresponding hydrogen production control mode according to different usage scenarios and perform hydrogen production and hydrogenation operations. The hydrogen production control modes include electrolysis hydrogen production and hydrogenation mode, high-pressure cylinder hydrogenation mode, and hydrogen production and solid-state hydrogen storage mode.

2. The automated control method for hydrogen production and hydrogenation according to claim 1, characterized in that, The system self-test specifically includes the following steps: Step S11: Monitor the water tank temperature. If the water tank temperature is <5℃, it indicates that the ambient temperature is too low. Activate the low temperature alarm and keep the system in a stopped state. If the water tank temperature is ≥5℃, the water temperature meets the system operating conditions, and proceed to step S12. Step S12: Monitor the water tank level. If the water tank level is less than 70% of the water tank height, start the water replenishment pump to replenish the water tank. If 70% of the water tank height is less than or equal to the water tank level and less than or equal to 85% of the water tank height, the water tank level meets the system operating conditions, and proceed to step S13. Step S13: Monitor the water quality in the water tank. If the resistivity of the water in the tank is <10 megohms, issue an alarm for water quality exceeding the standard and keep the system in a shutdown state. If the resistivity of the water in the tank is ≥10 megohms, the water quality meets the system operating conditions and proceed to step S14. Step S14: Monitor the hydrogen leakage. If the hydrogen leakage is ≤3%LEL, the system operation conditions are met, and proceed to step S15. If 3%LEL < hydrogen leakage ≤20%LEL, a hydrogen leakage exceeding the limit alarm is triggered, the system remains in its original state, and the exhaust fan is started. If 20%LEL < hydrogen leakage ≤40%LEL, a hydrogen leakage exceeding the limit alarm is triggered, the system enters a shutdown state, and the exhaust fan is started. If 40%LEL < hydrogen leakage ≤60%LEL, a hydrogen leakage exceeding the limit alarm is triggered, and the system stops all actions except alarms. Step S15: The circulating pump starts up and performs a self-test. The circulating pump operates for 10 seconds and generates circulating water pressure in the pipeline. If the circulating water pressure is <0.1MPa, an alarm is triggered indicating that the circulating water pressure is too low, and the system remains in a stopped state. If the circulating water pressure is ≥0.1MPa, the operating state of the circulating pump meets the system operating conditions, and the process proceeds to step S16. Step S16: Monitor the electrolyzer pressure. If the electrolyzer pressure is >3.0MPa, issue an overpressure alarm for hydrogen production and keep the system in a shutdown state. If the electrolyzer pressure is ≤3.0MPa, the electrolyzer pressure meets the system operating conditions, and proceed to step S17. Step S17: Monitor the system purification section pressure. If the purification pressure is >3.0MPa, issue an overpressure alarm and keep the system in a shutdown state. If the purification pressure is ≤3.0MPa, the purification pressure meets the system operating conditions, and proceed to step S18. Step S18: Monitor the output pressure of the booster. If the output pressure of the booster is >35.5MPa, issue a hydrogen overpressure alarm and keep the system in a shutdown state; if the output pressure of the booster is <35.5MPa, the output pressure of the booster meets the system operating conditions and proceed to step S19. If steps S11 to S18 are satisfied, the system is allowed to run automatically.

3. The automated control method for hydrogen production and hydrogenation according to claim 1, characterized in that, The electrolytic hydrogen production and hydrogenation mode specifically includes the following steps: Step S201: Select the electrolysis hydrogen production and hydrogen addition mode, set the target hydrogen charging pressure for this operation, and start the system; Step S202: The chiller is automatically turned on, and the chiller control subroutine controls the operation of the chiller to reduce the cooling water temperature to the working temperature. Step S203: If the water tank temperature is ≤15.0℃, start the circulation pump; Step S204: The circulating pump is working. If the circulating water pressure is ≥0.1MPa, the electrolysis power supply is turned on, and the current ramp-up subroutine controls the electrolysis power supply to perform current ramp-up. Step S205: The electrolytic power supply is working, and the electrolytic cell performs water electrolysis to produce hydrogen and oxygen. The generated oxygen flows back to the water tank with the circulating water, and is then discharged after gas-water separation through the oxygen vent of the water tank. The generated hydrogen flows into the hydrogen-water-gas separator, where it is cooled and condensed by cooling water. The generated hydrogen is then separated into gas and liquid, and the separated liquid water is controlled and drained by the gas-liquid separation drainage subroutine. Step S206: After the generated hydrogen gas accumulates in the hydrogen-water-gas separator, it causes the electrolytic cell to generate electrolytic cell pressure. When the electrolytic cell pressure is ≥1MPa, the purification operation is started. The purification operation is controlled by the purification AB tank switching subroutine. Step S207: After purification, the hydrogen gas is tested for dew point. If the dew point value is > -45℃, it is determined to be unqualified hydrogen gas; if the dew point value is ≤ -45℃, it is determined to be qualified hydrogen gas, and the purification and venting subroutine performs purification and venting control processing. Step S208: If the dew point value is ≤-45℃, the hydrogen purging and replacement subroutine controls qualified hydrogen gas to purge and replace the internal pipelines of the system. Step S209: Change the purification time; Step S210: The system automatically selects the hydrogen charging path based on the target hydrogen charging pressure for this charge. Step S211: After the hydrogen charging task is completed, the system enters the venting stage, which is controlled by the system automatic shutdown subroutine.

4. The automated control method for hydrogen production and hydrogenation according to claim 3, characterized in that, The chiller control subroutine specifically includes the following steps: Step S51: If the water tank temperature is ≥10.5℃ and the shutdown interval is ≥the set shutdown interval time, start the chiller; Step S52: If the water tank temperature is ≤10.0℃, stop the chiller and start timing the shutdown interval; Step S53: After the chiller stops, wait 1-5 minutes before restarting the chiller.

5. The automated control method for hydrogen production and hydrogenation according to claim 3, characterized in that, The power supply ramp-up subroutine specifically includes the following steps: Step S61: Run at 20% of the rated current for 1 to 5 minutes, with a reference value of 2 minutes; Step S62: Run at 50% of the rated current for 1 to 5 minutes, with a reference value of 3 minutes; Step S63: Linearly increase the rated current from 60% to 100% for a running time of 1~30 minutes, with a reference value of 5 minutes; Step S64: If the hydrogen production water temperature is ≥35℃, then skip steps S61 and S62 and proceed directly to step S63. Step S65: After the system is powered off and then powered on again, the first run will still execute steps S61, S62, S63, and S64 in sequence.

6. The automated control method for hydrogen production and hydrogenation according to claim 3, characterized in that, The gas-liquid separation and drainage subroutine specifically includes the following steps: Step S71: If the liquid level in the gas-liquid separation tank is ≥60%, the system will automatically open the drain valve DK1 of the hydrogen-water-gas separator to drain the water. Step S72: If the gas-liquid separation liquid level is ≤40%, the system will automatically close the drain valve DK1 of the hydrogen-water-gas separator to store water.

7. The automated control method for hydrogen production and hydrogenation according to claim 1, characterized in that, The high-pressure cylinder hydrogenation mode specifically includes the following steps: Step S301: Select the high-pressure cylinder hydrogen filling mode, set the target hydrogen filling pressure for this time, open the solenoid valve DK11, connect the gas pipeline of the high-pressure cylinder, and start the system. Step S302: Automatically fill with hydrogen according to the target hydrogen filling pressure; Step S303: After the hydrogen charging task is completed, the system enters the venting stage, which is controlled by the system's automatic shutdown subroutine.

8. The automated control method for hydrogen production and hydrogenation according to claim 1, characterized in that, The hydrogen production and solid-state hydrogen storage mode specifically includes the following steps: Step S401: Select the hydrogen production and solid-state hydrogen storage mode, set the target pressure for this hydrogen charging, and start the system; Step S402: Turn on the chiller. The chiller control subroutine controls the operation of the chiller. The cooling water temperature drops to the working temperature. Set the working temperature of the cooling water to 10℃. Step S403: If the water tank temperature is ≤15.0℃, start the circulation pump; Step S404: The circulating pump is working, the circulating water pressure is ≥0.1MPa, the electrolysis power supply is turned on, and the current ramp-up operation of the electrolysis power supply is controlled by the power supply ramp-up subroutine. Step S405: The electrolytic power supply is working, and the electrolytic cell performs water electrolysis to produce hydrogen and oxygen. The generated oxygen flows back to the water tank with the circulating water, and is then discharged after gas-water separation through the oxygen vent of the water tank. The generated hydrogen flows into the hydrogen-water-gas separator, where it is cooled and condensed by cooling water. The generated hydrogen is then separated into gas and liquid, and the separated liquid water is drained under control by the gas-liquid separation drainage subroutine. Step S406: After the generated hydrogen gas accumulates in the hydrogen-water-gas separator, it causes the electrolytic cell to generate electrolytic cell pressure. When the electrolytic cell pressure is ≥1MPa, the purification operation is started. The purification operation is controlled by the purification AB tank switching subroutine. Step S407: After purification, the hydrogen gas is tested for dew point. If the dew point value is > -45℃, it is determined to be unqualified hydrogen gas; if the dew point value is ≤ -45℃, it is determined to be qualified hydrogen gas, and the purification and venting subroutine performs purification and venting control processing. Step S408: If the dew point value is ≤-45℃, the hydrogen purging and replacement subroutine controls qualified hydrogen gas to purge and replace the internal pipelines of the system. Step S409: Change the purification time; Step S410: The system automatically selects the hydrogen charging path based on the target hydrogen charging pressure for this charge. Step S411: After the hydrogen charging task is completed, the system enters the venting stage, which is controlled by the system automatic shutdown subroutine.

9. The automated control method for hydrogen production and hydrogenation according to claim 8, characterized in that, The hydrogen charging path in step S410 includes: Path 1: If the target hydrogen charging pressure is lower than the booster start-up pressure, open solenoid valve DK7. The purified hydrogen gas passes through solenoid valve DK7 and enters the metal solid hydrogen storage cylinder. When the hydrogen charging pressure reaches the target hydrogen charging pressure, enter the solid hydrogen storage trickle charging mode. Path 2: If the target hydrogen charging pressure is higher than the booster start-up pressure, then solenoid valves DK9 and DK10 are opened. After purification, the hydrogen gas enters the metal solid hydrogen storage cylinder through solenoid valve DK9, the booster, and solenoid valve DK10. The operation of the booster is controlled by the booster operation subroutine. Finally, when the hydrogen charging pressure reaches the target hydrogen charging pressure, the solid hydrogen storage trickle charging mode is entered.

10. The automated control method for hydrogen production and hydrogenation according to claim 9, characterized in that, The solid-state hydrogen storage trickle charging mode specifically includes the following steps: Step S121: After the final hydrogen charging pressure reaches the target hydrogen charging pressure, the electrolysis power supply uses 10% of the rated current to electrolyze water in the electrolysis cell to produce hydrogen. The hydrogen charging port maintains the set hydrogen charging pressure and trickles hydrogen into the metal solid hydrogen storage bottle. The hydrogen production pressure continues to rise to 0.1 MPa higher than the target hydrogen charging pressure. At this time, the system determines that the metal solid hydrogen storage bottle is full. Step S122: The metal solid hydrogen storage bottle will continue to absorb hydrogen, causing the hydrogen filling pressure to gradually decrease. It is determined whether the pressure value has decreased to 0.5 MPa within a certain period of time. Step S123: If the pressure drops to 0.5MPa, it is determined that the metal solid hydrogen storage bottle can still absorb hydrogen. The electrolysis power supply will gradually increase the current to increase the hydrogen production and increase the system pressure until the target hydrogen filling pressure is reached and the current is stopped. The trickle hydrogen filling process is repeated. Step S124: When the electrolysis power supply current is automatically adjusted to 10% of the rated current, the hydrogen charging pressure reaches the target hydrogen charging pressure, and it is determined that the metal solid hydrogen storage bottle is full, and the hydrogen charging task is completed.

Images