Hydrogen charging management method and system for solid-state hydrogen storage device

Abstract

The application discloses a hydrogen filling management method of a solid-state hydrogen storage device, which comprises the following steps: S1, connecting a hydrogen gun to a hydrogen inlet end of the solid-state hydrogen storage device and performing self-checking on the state of the solid-state hydrogen storage device; S2, opening the hydrogen gun to start hydrogen filling, and controlling the hydrogen pressure entering the hydrogen inlet end to be P2; S3, detecting the temperature in the solid-state hydrogen storage device in real time, and when the temperature in the solid-state hydrogen storage device rises from Temp5 to Temp2, controlling a hydrogen replacement end of the solid-state hydrogen storage device to discharge hot hydrogen after heat exchange; S4, continuously detecting the temperature in the solid-state hydrogen storage device in real time, and when the actual hydrogen filling time reaches the estimated hydrogen filling time, judging whether Temp0 is less than Temp2 or not, if yes, entering step S5, otherwise, closing the hydrogen filling; S5, continuously detecting the temperature in the solid-state hydrogen storage device in real time, and when the temperature in the solid-state hydrogen storage device falls to Temp4 and the hydrogen flow entering the hydrogen inlet end and the hot hydrogen flow discharged are the same or basically the same, the hydrogen filling is finished.

Description

Technical Field

[0001] This invention belongs to the field of hydrogen energy technology, and specifically relates to a hydrogen charging management method and system for a solid-state hydrogen storage device. Background Technology

[0002] Hydrogen atoms are the simplest atoms, and hydrogen gas is the gas with the lowest density. In practical applications, it can be used as both a raw material and an energy source, making hydrogen energy a clean energy source for the 21st century. The two main applications of hydrogen energy are "hydrogen-electricity" and "hydrogen-thermium," and hydrogen can be stored in various ways, including high-pressure gaseous, cryogenic liquid, organic liquid, and metallic (non-metallic) solid states, each corresponding to its respective application area in hydrogen energy.

[0003] Solid-state hydrogen storage technology is based on the hydrogen absorption and desorption characteristics of certain substances and the heat exchange phenomenon that accompanies the hydrogen absorption and desorption process. It leverages the advantages of high safety and high volume density to develop applications in hydrogen energy scenarios.

[0004] Existing solid-state hydrogen storage devices mainly rely on natural cooling or other media (such as cooling water) for heat exchange during hydrogen filling. However, these devices have several drawbacks: low heat exchange efficiency, long filling time, poor filling effect, and complex structure, making them unsuitable for commercial use. Summary of the Invention

[0005] The purpose of this invention is to provide a hydrogen charging management method and system for a solid-state hydrogen storage device to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a hydrogen charging management method for a solid-state hydrogen storage device, comprising the following steps:

[0007] Step S1: Connect the hydrogen gun to the hydrogen inlet of the solid hydrogen storage device and perform a self-check on the status of the solid hydrogen storage device. After the self-check is passed, proceed to step S2.

[0008] Step S2: Open the hydrogen gun to start charging hydrogen, control the pressure of the hydrogen entering the hydrogen inlet to P2, where P2 is the optimal equilibrium pressure of the solid hydrogen storage device, and the hydrogen temperature output by the hydrogen gun is Temp5. Proceed to step S3.

[0009] Step S3: Real-time monitoring of the temperature inside the solid hydrogen storage device. When the temperature inside the solid hydrogen storage device rises from Temp5 to Temp2, control the hydrogen exchange end of the solid hydrogen storage device to discharge the hot hydrogen after heat exchange. The temperature of the hot hydrogen is greater than Temp5. Temp2 is the highest hydrogen absorption temperature of the solid hydrogen storage device. Proceed to step S4.

[0010] Step S4: Continue to monitor the temperature inside the solid-state hydrogen storage device in real time. When the actual hydrogen charging time reaches the estimated hydrogen charging time... 估充When the condition is met, determine whether Temp0 < Temp2 is true. If yes, proceed to step S5; otherwise, shut down hydrogen charging. Here, Temp0 is the current temperature of the solid-state hydrogen storage device.

[0011] Step S5: Continue to monitor the temperature inside the solid hydrogen storage device in real time. When the temperature inside the solid hydrogen storage device drops to Temp4, and the flow rate of hydrogen entering from the hydrogen inlet is the same or basically the same as the flow rate of hot hydrogen discharged from the hydrogen exchange outlet, shut down the hydrogen charging and discharging, and the hydrogen charging ends. Here, Temp4 is the temperature at which the solid hydrogen storage device completes hydrogen charging.

[0012] Furthermore, step S6 is included: after hydrogen charging is completed, the difference between the total flow rate of hydrogen entering at the hydrogen inlet and the total flow rate of hot hydrogen discharged at the hydrogen exchange outlet is calculated, and the difference is stored in the device identification unit of the solid hydrogen storage device.

[0013] Furthermore, in step S1, the self-check of the state of the solid hydrogen storage device includes: determining whether Temp0≥Temp1 is true; if so, the self-check fails and the hydrogen gun is disconnected; determining whether p1≥p2 is true; if so, the self-check fails and the hydrogen gun is disconnected, where Temp1 is the value that the hydrogen temperature in the solid hydrogen storage device should not exceed, and p1 is the current pressure of the solid hydrogen storage device.

[0014] Furthermore, a pressure regulating valve is used to control the pressure of the hydrogen entering at the hydrogen inlet.

[0015] Furthermore, temperature sensors are used to monitor the temperature inside the solid-state hydrogen storage device in real time.

[0016] Furthermore, the estimated hydrogen charging time... 估充 = Hydrogen storage capacity of solid-state hydrogen storage device / S 吸 S 吸 This is the estimated hydrogen absorption rate.

[0017] Furthermore, the S 吸 The calculation method is as follows: S 吸 =S / (K+1), K=ΔH / (c(H2)*(Temp3-Temp5)), where c(H2) is the specific heat capacity of hydrogen, in J / (kg·℃), ΔH is the enthalpy change parameter of hydrogen absorption of the hydrogen storage material, in J / kg, S is the hydrogen charging flow rate, and Temp3 is the optimal temperature for hydrogen absorption of the solid-state hydrogen storage device.

[0018] Furthermore, in step S3, the pressure of the hot hydrogen discharged from the hydrogen exchange end is p2*ρ, where ρ is a constant that ensures the solid hydrogen storage material of the solid hydrogen storage device does not enter a hydrogen absorption pressure plateau higher than P2.

[0019] Furthermore, in step S3, the hot hydrogen discharged from the hydrogen exchange end is output to the hydrogen exchange end of the hydrogen refueling machine for recovery.

[0020] The present invention also discloses a hydrogen charging management system for a solid-state hydrogen storage device, which uses the above-mentioned hydrogen charging management method for solid-state hydrogen storage devices for hydrogen charging management and control.

[0021] Beneficial technical effects of the present invention:

[0022] This invention uses cold hydrogen to cool the solid hydrogen storage device. Cold hydrogen has a large specific heat capacity, high heat exchange efficiency, and fast hydrogen filling speed. The hydrogen filling process is precisely controlled, resulting in good hydrogen filling effect. Moreover, the system has a simple structure, is easy to use, and is suitable for commercial use. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a flowchart illustrating the hydrogen charging management method of a solid-state hydrogen storage device according to a specific embodiment of the present invention. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1 As shown, a hydrogen charging management method for a solid-state hydrogen storage device includes the following steps:

[0028] Step S1: Connect the hydrogen gun to the hydrogen inlet of the solid hydrogen storage device and perform a self-check on the status of the solid hydrogen storage device. After the self-check is passed, proceed to step S2.

[0029] Specifically, in this embodiment, after shutting down the working platform of the solid-state hydrogen storage device, the hydrogen nozzle of the hydrogen dispenser is connected to the hydrogen inlet and hydrogen exchange outlet (i.e., the hydrogen charging port and the hydrogen exchange port) of the solid-state hydrogen storage device. The main controller of the solid-state hydrogen storage device reads data from the pressure sensor, temperature sensor, device identification unit, etc., inside the solid-state hydrogen storage device for self-testing. The device identification unit stores relevant parameters of the solid-state hydrogen storage device, including the hydrogen storage material, PCT parameters, number of hydrogen charging / discharging cycles, and the amount of hydrogen charged / discharged in each cycle. The self-test content includes:

[0030] The system checks if Temp0 ≥ Temp1. If so, the self-test fails, and the hydrogen nozzle is disconnected. Temp0 is the current temperature of the solid-state hydrogen storage device, and Temp1 is the maximum temperature the hydrogen inside the device should not exceed. Temp1 can be determined according to the "Technical Standard for Automobile Fueling, Gas Filling, and Hydrogen Refueling Stations" (GB 50156-2021). If the standard is updated, the new standard should be followed. Solid-state hydrogen storage devices may experience Temp0 ≥ Temp1 under various conditions, such as outdoor exposure, excessive internal heat immediately after disconnecting the hydrogen system, and during malfunctions.

[0031] The system determines whether p1 ≥ p2. If so, the self-test fails, and the hydrogen gun is disconnected. Here, p1 is the current pressure of the solid-state hydrogen storage device, and p2 is the optimal equilibrium pressure of the solid-state hydrogen storage device, both stored in the device identification unit. When p1 ≥ p2, it may indicate that the hydrogen supply in the solid-state hydrogen storage device is sufficient, or it may indicate that the device is damaged. Possible causes of damage include device failure, pressure sensor failure, etc.

[0032] Step S2: Turn on the hydrogen gun to start charging with hydrogen, control the pressure of the hydrogen entering the hydrogen inlet to P2, and the temperature of the hydrogen output from the hydrogen gun to Temp5, then proceed to step S3.

[0033] Specifically, in this embodiment, the main controller sends a command to the hydrogen dispenser's controller to open the hydrogen dispenser's switching valve, causing hydrogen to exit from the hydrogen nozzle. The hydrogen exiting the nozzle is cold hydrogen, preferably with a temperature less than 20°C, more preferably -20°C, but not limited to this. Then, the main controller controls the opening of the switching valve, pressure regulating valve, and mass flow meter at the hydrogen inlet of the solid hydrogen storage device. The pressure of the pressure regulating valve is set to P2, and hydrogen enters the solid hydrogen storage device in a state of (p2, S, Temp5), where S is the hydrogen charging flow rate. The solid hydrogen storage material in the solid hydrogen storage device quickly enters the hydrogen absorption state.

[0034] Step S3: Real-time monitoring of the temperature inside the solid hydrogen storage device. When the temperature inside the solid hydrogen storage device rises from Temp5 to Temp2, control the hydrogen exchange end of the solid hydrogen storage device to discharge the hot hydrogen after heat exchange. The temperature of the hot hydrogen is greater than Temp5. Temp2 is the highest hydrogen absorption temperature of the solid hydrogen storage device. Proceed to step S4.

[0035] After the solid hydrogen storage material in the solid hydrogen storage device rapidly enters the hydrogen absorption state, the temperature inside the device quickly rises from Temp5 to Temp2 while the (p2, S) parameters remain basically unchanged, entering the (p2, S, Temp2) hydrogen charging and discharging equilibrium state. Therefore, when the temperature sensor detects that the temperature inside the solid hydrogen storage device is Temp2, it indicates that the solid hydrogen storage material has entered the (p2, S, Temp2) hydrogen charging equilibrium state. Then, the main controller opens the switch valve, pressure regulating valve, and mass flow meter at the hydrogen exchange end of the solid hydrogen storage device. The pressure of the pressure regulating valve is set to p2*ρ, where ρ is a constant to ensure that the solid hydrogen storage material does not enter a state higher than the P2 hydrogen absorption pressure plateau. This constant is mainly related to the PCT parameters (pressure, composition, temperature) of the solid hydrogen storage material, ΔH (hydrogen absorption enthalpy change), and the volume of gaseous hydrogen water. At this time, the solid hydrogen storage device is under pressure p2*ρ. On one side, the hot hydrogen after heat exchange is discharged by depressurization, and on the other side, cold hydrogen at state (p2, Temp5) is continuously input. With the input of cold hydrogen, the solid hydrogen storage device is always in a hydrogen charging state (less than Temp2 to Temp2).

[0036] Preferably, in this specific embodiment, the hot hydrogen discharged from the hydrogen exchange end is output to the hydrogen exchange end of the hydrogen refueling machine for recycling back to the hydrogen refueling station, thereby realizing hydrogen recycling and utilization and reducing costs.

[0037] The hydrogen output from the hydrogen exchanger to the hydrogen refueling station is at a temperature of approximately Temp2. ​​The hot hydrogen enters a dedicated hydrogen storage tank at the refueling station and is then recycled according to relevant regulations. If the refueling station has a solid-state hydrogen storage system, the hydrogen can also be cooled and more hydrogen can be exchanged within the solid-state hydrogen storage device for recycling. This will not be elaborated upon here.

[0038] Step S4: Continue to monitor the temperature inside the solid-state hydrogen storage device in real time. When the actual hydrogen charging time is reached... 估充 When the estimated hydrogen charging time is reached, determine whether Temp0 < Temp2 is true. If yes, proceed to step S5; otherwise, shut down hydrogen charging.

[0039] Specifically, as the solid-state hydrogen storage device gradually fills up in the (p2, S, Temp2) state, the amount of hydrogen absorbed and the amount of heat released by the material gradually decrease. The temperature of the solid-state hydrogen storage device will gradually decrease from Temp2 to Temp3, where Temp3 is the optimal temperature for hydrogen absorption and is stored in the device identification unit. When the actual hydrogen filling time is... 实充 Reaching the estimated hydrogen charging time 估充 When the condition is met, determine whether Temp0 < Temp2 is true. If Temp0 ≥ Temp2, it indicates that the hydrogen charging state is abnormal. Close the switch valve of the hydrogen dispenser and shut off the hydrogen charging.

[0040] Estimated hydrogen charging time 估充 = Hydrogen storage capacity of solid-state hydrogen storage device / S 吸 S 吸 S represents the estimated hydrogen absorption rate. 吸 The calculation method is as follows: S 吸 =S / (K+1), K = ΔH / (c(H2)*(Temp3-Temp5)), where c(H2) is the specific heat capacity of hydrogen, in J / (kg·℃), and ΔH is the enthalpy change parameter of hydrogen absorption of the hydrogen storage material, in J / kg.

[0041] Step S5: Continue to monitor the temperature inside the solid hydrogen storage device in real time. When the temperature inside the solid hydrogen storage device drops from Temp3 to Temp4, and the flow rate of hydrogen entering at the hydrogen inlet is the same or basically the same as the flow rate of hot hydrogen discharged at the hydrogen exchange outlet, shut down the hydrogen charging and discharging, and the hydrogen charging ends. Here, Temp4 is the temperature at which the solid hydrogen storage device completes hydrogen charging.

[0042] Specifically, after the solid-state hydrogen storage device finishes absorbing hydrogen in the (p2, S) state, the temperature of the solid-state hydrogen storage device will rapidly drop to Temp4. At the same time, the difference between the mass flow meter data at the hydrogen inlet and hydrogen exchange ends of the solid-state hydrogen storage device will tend to 0 (basically the same, or possibly the same). Therefore, when the above conditions are met, the main controller determines that the solid-state hydrogen storage device has completed hydrogen charging, and closes the switch valves, pressure regulating valves, mass flow meters, etc. at the hydrogen refueling machine, hydrogen exchange end and hydrogen inlet end, thereby shutting off hydrogen charging and hydrogen discharge, and the hydrogen charging ends.

[0043] Furthermore, this embodiment also includes step S6: After hydrogen charging is completed, the main controller calculates the difference between the total hydrogen flow rate entering at the hydrogen inlet and the total hot hydrogen flow rate exiting at the hydrogen exchange outlet, and stores the difference in the device identification unit of the solid-state hydrogen storage device. This facilitates the calculation of the remaining hydrogen quantity and the fitting of the hydrogen storage capacity decay rate and service life of the solid-state hydrogen storage material when hydrogen is used. The decay rate is calculated as 1 - actual hydrogen storage capacity / rated hydrogen storage capacity, and the service life is obtained by comparing it with the decay rate per thousand cycles provided by the manufacturer.

[0044] The following will provide further explanation with specific examples.

[0045] The device identification unit for the solid-state hydrogen storage device is set to store the following parameters:

[0046] p2=6Mpa, p2*ρ=6Mpa*1.02=6.1MpaMpa; Temp1=85℃, Temp2=60℃, Temp3=50℃, Temp4=45℃, c(H2)=14kJ / (kg·℃), ΔH=7000kJ / kg.

[0047] The parameters of the hydrogenation unit are as follows:

[0048] p3 (hydrogen storage pressure of hydrogen dispenser) = 20 MPa; Temp5 = -20℃; S = 7 kg / min.

[0049] The hydrogen charging management method for solid-state hydrogen storage devices includes the following specific steps:

[0050] Step S1: Connect the hydrogen gun to the hydrogen inlet and hydrogen exchange end of the solid hydrogen storage device, and perform a self-check on the status of the solid hydrogen storage device. Determine whether Temp0 ≥ 85℃ is true. If yes, the self-check fails and the hydrogen gun is disconnected. Determine whether p1 ≥ 6 MPa is true. If yes, the self-check fails and the hydrogen gun is disconnected. Otherwise, proceed to step S2 after the self-check passes.

[0051] In step S2, the main controller sends a command to the hydrogen dispenser controller to open the hydrogen dispenser switch valve, causing hydrogen to be dispensed from the hydrogen nozzle. Then, the main controller controls the switch valve, pressure regulating valve, and mass flow meter at the hydrogen inlet of the solid hydrogen storage device to open. The pressure of the pressure regulating valve is set to 6 MPa. Hydrogen enters the solid hydrogen storage device at (6 MPa, 7 kg / min, -20°C). The solid hydrogen storage material in the solid hydrogen storage device quickly enters the hydrogen absorption state, and the process proceeds to step S2.

[0052] In step S3, after the solid hydrogen storage material in the solid hydrogen storage device rapidly enters the hydrogen absorption state, the temperature inside the device rapidly rises from -20℃ to 60℃ while the parameters (6MPa, 7kg / min) remain essentially constant, entering a hydrogen charging / discharging equilibrium state (6MPa, 7kg / min, 60℃). Once in the hydrogen charging equilibrium state (6MPa, 7kg / min, 60℃), the main controller opens the switching valve, pressure regulating valve, and mass flow meter at the hydrogen exchange end of the solid hydrogen storage device. The pressure of the pressure regulating valve at the hydrogen exchange end is set to 6.1MPa. At this time, under the pressure of 6.1MPa, the solid hydrogen storage device simultaneously depressurizes and discharges the hot hydrogen after heat exchange while continuously inputting cold hydrogen at (6MPa, -20℃). With the introduction of cold hydrogen, the solid hydrogen storage device remains in a hydrogen charging state (around 60℃), proceeding to step S4.

[0053] Step S4: As the solid-state hydrogen storage device gradually fills up under conditions of (6 MPa, 7 kg / min, 60°C), the amount of hydrogen absorbed and the amount of heat released by the material gradually decrease, and the temperature of the solid-state hydrogen storage device will gradually drop from 60°C to 50°C. When the actual hydrogen charging time reaches the estimated hydrogen charging time... 估充 If Temp0 < 60℃, the hydrogen charging status is normal, then proceed to step S5; if Temp0 ≥ 60℃, it indicates that the hydrogen charging status is abnormal, so close the switch valve of the hydrogen dispenser and shut off the hydrogen charging.

[0054] Estimated hydrogen charging time = Hydrogen storage capacity of solid-state hydrogen storage device / S 吸, K=7000kj / kg / (14kj / (kg·℃)*(50--20))=50:7≈7; S 吸 =7 / (7+1)≈0.85kg / min.

[0055] Step S5: After the solid hydrogen storage device finishes absorbing hydrogen at (6 MPa, 7 kg / min), the temperature of the solid hydrogen storage device will rapidly drop to 45°C. At the same time, the difference between the mass flow meter data at the hydrogen inlet and hydrogen exchange ends of the solid hydrogen storage device will tend to 0, that is, they will be basically the same. Of course, they may also be the same. Therefore, when the above conditions are met, the main controller determines that the solid hydrogen storage device has completed hydrogen charging and closes the switch valves, pressure regulating valves, mass flow meters, etc. at the hydrogen refueling machine, hydrogen exchange end and hydrogen inlet end, thereby shutting off hydrogen charging and hydrogen discharge, and the hydrogen charging ends.

[0056] Step S6: After hydrogen charging is completed, the main controller calculates the difference between the total hydrogen flow rate entering at the hydrogen inlet and the total hot hydrogen flow rate exiting at the hydrogen exchange outlet, and stores this difference in the device identification unit of the solid-state hydrogen storage device. This facilitates the calculation of the remaining hydrogen quantity and the fitting of the hydrogen storage capacity decay rate and service life of the solid-state hydrogen storage material when hydrogen is used. The decay rate is calculated as 1 - actual hydrogen storage capacity / rated hydrogen storage capacity, and the service life is determined by comparing it with the decay rate per thousand cycles provided by the manufacturer.

[0057] The present invention also discloses a hydrogen charging management system for a solid-state hydrogen storage device, which uses the above-mentioned hydrogen charging management method for solid-state hydrogen storage devices for hydrogen charging management and control.

[0058] This invention uses cold hydrogen to cool the solid hydrogen storage device. Cold hydrogen has a large specific heat capacity, high heat exchange efficiency, and fast hydrogen filling speed. The hydrogen filling process is precisely controlled, resulting in good hydrogen filling effect. Moreover, the system has a simple structure, is easy to use, and is suitable for commercial use.

[0059] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A method for managing hydrogen charging in a solid-state hydrogen storage device, characterized in that, Includes the following steps: Step S1: Connect the hydrogen gun to the hydrogen inlet of the solid hydrogen storage device and perform a self-check on the status of the solid hydrogen storage device. After the self-check is passed, proceed to step S2. Step S2: Open the hydrogen gun to start charging hydrogen, control the pressure of the hydrogen entering the hydrogen inlet to P2, where P2 is the optimal equilibrium pressure of the solid hydrogen storage device, and the hydrogen temperature output by the hydrogen gun is Temp5. Proceed to step S3. Step S3: Real-time monitoring of the temperature inside the solid hydrogen storage device. When the temperature inside the solid hydrogen storage device rises from Temp5 to Temp2, control the hydrogen exchange end of the solid hydrogen storage device to discharge the hot hydrogen after heat exchange. The temperature of the hot hydrogen is greater than Temp5. Temp2 is the highest hydrogen absorption temperature of the solid hydrogen storage device. Proceed to step S4. Step S4: Continue to monitor the temperature inside the solid-state hydrogen storage device in real time. When the actual hydrogen charging time reaches the estimated hydrogen charging time... 估充 When the condition is met, determine whether Temp0 < Temp2 is true. If yes, proceed to step S5; otherwise, shut down hydrogen charging. Here, Temp0 is the current temperature of the solid-state hydrogen storage device. Step S5: Continue to monitor the temperature inside the solid hydrogen storage device in real time. When the temperature inside the solid hydrogen storage device drops to Temp4, and the flow rate of hydrogen entering at the hydrogen inlet is the same or basically the same as the flow rate of hot hydrogen discharged at the hydrogen exchange outlet, shut down the hydrogen charging and discharging, and the hydrogen charging ends. Here, Temp4 is the temperature at which the solid hydrogen storage device completes hydrogen charging. The self-check of the state of the solid hydrogen storage device in step S1 includes: determining whether Temp0≥Temp1 is true; if so, the self-check fails and the hydrogen gun is disconnected; determining whether p1≥p2 is true; if so, the self-check fails and the hydrogen gun is disconnected. Here, Temp1 is the value that the hydrogen temperature in the solid hydrogen storage device should not exceed, and p1 is the current pressure of the solid hydrogen storage device.

2. The hydrogen charging management method for the solid-state hydrogen storage device according to claim 1, characterized in that, It also includes step S6: After the hydrogen charging is completed, calculate the difference between the total flow rate of hydrogen entering at the hydrogen inlet and the total flow rate of hot hydrogen discharged at the hydrogen exchange outlet, and store the difference in the device identification unit of the solid hydrogen storage device.

3. The hydrogen charging management method for the solid-state hydrogen storage device according to claim 1, characterized in that, A pressure regulating valve is used to control the pressure of the hydrogen entering at the hydrogen inlet.

4. The hydrogen charging management method for the solid-state hydrogen storage device according to claim 1, characterized in that, Temperature sensors are used to monitor the temperature inside the solid hydrogen storage device in real time.

5. The hydrogen charging management method for the solid-state hydrogen storage device according to claim 1, characterized in that, Estimated hydrogen charging time 估充 =Hydrogen storage capacity of solid-state hydrogen storage device / S 吸 S 吸 This is the estimated hydrogen absorption rate.

6. The hydrogen charging management method for the solid-state hydrogen storage device according to claim 5, characterized in that, The S 吸 The calculation method is as follows: S 吸 =S / (K+1), K=ΔH / (c(H2) (Temp3-Temp5)), where c(H2) is the specific heat capacity of hydrogen in J / (kg•℃), ΔH is the enthalpy change parameter of hydrogen absorption of the hydrogen storage material in J / kg, S is the hydrogen charging flow rate, and Temp3 is the optimal temperature for hydrogen absorption of the solid-state hydrogen storage device.

7. The hydrogen charging management method for the solid-state hydrogen storage device according to claim 1, characterized in that, In step S3, the pressure of the hot hydrogen discharged from the hydrogen exchange end is p2. ρ, where ρ is a constant that ensures the solid hydrogen storage material in the solid hydrogen storage device does not enter a state higher than the P2 hydrogen absorption pressure plateau.

8. The hydrogen charging management method for the solid-state hydrogen storage device according to claim 1, characterized in that, In step S3, the hot hydrogen discharged from the hydrogen exchange end is output to the hydrogen exchange end of the hydrogen dispenser for recovery.

9. A hydrogen charging management system for a solid-state hydrogen storage device, characterized in that, The hydrogen charging management system uses the hydrogen charging management method of the solid hydrogen storage device as described in any one of claims 1-8 for hydrogen charging management and control.

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